Comisión Pastoral Paz y Ecología
Transcription
Comisión Pastoral Paz y Ecología
ASUNTOS DE RECUPERACIÓN Y COSTOS APROXIMADOS PARA LA RECUPERACIÓN DE LA MINA MARLIN Municipios de San Miguel Ixtahuacán y Sipacapa Departamento de San Marcos Guatemala 2011 Comisión Pastoral Paz y Ecología Diócesis de San Marcos Casa Diocesana, Oficina 21 10 Avenida, 6-28 Zona 4, San Marcos San Marcos, Guatemala www.copaeguatemala.org/ Unitarian Universalist ServiceCommittee 689 Massachusetts Ave. Cambridge, MA 02139-3302 UnitedStates of America www.uusc.org AUTORES Y COLABORADORES Keith Campbell, B.S., P.E. Ingeniero de procesos químicos con 25 años de experiencia en el tratamiento de agua subterránea contaminada, proceso de agua, y agua residual para minería, petróleo y gas, procesos químicos, industrias farmacéuticas e industrias de energía alternativa. Ana Lidia González, Lic. Bióloga responsable del monitoreo de calidad del agua alrededor de la mina Marlin. Con experiencia en la realización de estudios de impacto ambiental e investigación biológica. Steve Laudeman, B.S., M.S., P.E. Ingeniero geologo y civil con 21 años de experiencia en materiales peligrosos, manejo de residuos, construcción de carreteras, minas y canteras, e infraestructura para reservas naturales. James Montgomery, E.M. Ingeniero de minas con 40 años de experiencia en la exploración de minerales, diseño de minas, ingeniería de seguridad, producción y gestión de proyectos para minas subterráneas, y eliminación de residuos nucleares. Nic Remington, B.S., P.E. Ingeniero civil con 8 años de experiencia en investigación de fallas de suelo y estructurales, evaluación de daño de terremotos, y diseño de estructuras comerciales y educativas, y estimación de costos. Robert Robinson, E.M., M.S., M.E.M.P., P.E. Ingeniero de minas y medio ambiente con 40 años de experiencia en la producción e ingeniería de minas, y la remediación de minas abandonadas e históricas. Investigación Adicional: Molly Butler Traducción: Molly Butler MariaJ. Van Der Maaten, M.A. H. Alejandro Alfaro Santiz, M.A. Hojas de vida disponibles bajo pedido. Mapa de ubicación en portada por Richard Harris. ÍNDICE Página Introducción……………………………………………………………………... 1 Riesgos ambientales de la minería……………………………………........... 3 Estimación de costos de la recuperación ……………………………………. 10 Tareas de la recuperación ……………………………………………. 14 Metodología de evaluación de costos…..………………………….... 26 Requerimientos para el plan de recuperación……………………………… 29 Conclusiones…………………………………………………………………… 33 Obras citadas………………………………………………………………….... 35 Anexo ……………………………………………………………………………. 39 Estimación de costos de recuperación (no incluye el tratamiento de agua) Figuras…………………………………………………………………………… 6 - 9 1. Colas de Millsap, cerca de Victor, Colorado (EE.UU.) 2. Colas de Eureka, cerca de Silverton, Colorado (EE.UU.) 3. Colas de American Tunnel, cerca de Gladstone, Colorado (EE.UU.) 4. Tajo abierto GiltEdge, cerca de Lead, South Dakota (EE.UU.) 5. Descarga de la mina Grand Mogul, cerca de Gladstone, Colorado (EE.UU.) 6. Muerte de peces en Kerber Creek, cerca de Villa Grove, Colorado (EE.UU.) 7. Planta de tratamiento de agua y colas de Urad, cerca de Empire, Colorado (EE.UU.) Cuadros 1. Estimación total de costos de recuperación en quetzales, trabajo ajustado…………………………………………………………. 10 2. Estimación total de costos de recuperación, basada en costos de los EE.UU. ………………………………………………………….. 13 Nota: Este informe usa dólares ($) y quetzales (Q), así como unidades métricas e inglesas. El software para estimar los costos se basa en dólares y unidades inglesas así como muchas de las fuentes de información. La información se cita en el texto en sus unidades originales para que la misma pueda encontrarse en su fuente original. Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- INTRODUCCIÓN La mina Marlin es operada y pertenece a Montana Exploradora de Guatemala, S.A., subsidiaria absoluta de la empresa transnacional Goldcorp, Inc. La mina está ubicada en el norte del departamento de San Marcos en los municipios de San Miguel Ixtahuacán y Sipacapa. Montana ha proporcionado una fianza de garantía de $1 millón (Montana Exploradora de Guatemala, S.A., 2010, p. 50) que el gobierno puede utilizar para recuperar la mina en caso de que la empresa no cumpla sus obligaciones. Esta cantidad es insignificante en comparación con las fianzas de recuperación que se exigen paralas operaciones mineras en otras partes. Por ejemplo, las fianzas de recuperación de cuatro minas en Colorado, EE.UU. son: · · · · Cresson: oro, tajo abierto, tanque de lixiviación, planta de procesamiento$99 millones; Climax: molibdeno, mina subterránea y tajo abierto, planta de procesamiento-$52 millones; Henderson: molibdeno, mina subterránea, planta de procesamiento-$41 millones; y San Luis: oro y plata, tajo abierto, planta de procesamiento-$7.4 millones (Colorado DivisionofReclamation, Mining and Safety, 2010). Aunque los requisitos de recuperación para estas cuatro minas no son totalmente comparables con la mina Marlin, muchas de las tareas de recuperación son similares y los costos totales de recuperación anteriores indican la magnitud de las fianzas de garantías para recuperación en minas modernas. También se ha observado que la fianza de garantía para la mina Marlin es baja (On Common Ground, 2010, p. 16; E-Tech, 2010, p.8). La baja fianza de garantía para la mina Marlin expone al gobierno, a residentes locales y al medio ambiente a riesgos significativos por cualquier incumplimiento de Montana en recuperar la mina correctamente. Estos riesgos incluyen la continua contaminación de efluentes con metales tóxicos y ácidos; erosión y sedimentación; y tierras alteradas que no pueden devolverse a su uso anterior. Estos riesgos se discuten en mayor profundidad en la siguiente sección. El total calculado aproximado de esta investigación para una fianza de garantía apropiada para la mina Marlin es Q389 millones o $49 millones, obviamente un aumento significativo sobre la fianza actual. Esta cantidad provee para la operación indefinida de la planta de tratamiento de agua actual; cubrir la roca estéril de la mina y colas de procesamiento de la mena; nivelar las tierras alteradas a formaciones terrestres naturales; control de erosión; la extracción de edificios, equipo y desechos; y revegetación. Si se demuestra que el retratamiento de agua no es necesario, se puede devolver aproximadamente una cuarta parte de la fianza a Montana. De modo parecido, porciones de la 1 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- fianza aplicables podrían devolverse, si se puede certificar que Montana está realizando adecuadamente la recuperación concurrente. El costo de recuperación fue estimado con software de computadoras que es extensivamente aceptado y usado dentro de los EE.UU. Los reguladores del estado de Nevada y la industria minera de ese estado prepararon el software y costos unitarios juntos. Donde fue disponible, datos de entrada para el software fueron tomados de documentos públicos de Montana y Goldcorp. Desafortunadamente, estos documentos carecen de información de recuperación y algunos datos de entrada tuvieron que ser asumidos en base a la experiencia y cálculo de los autores. Si se obtienen datos adicionales, se pueden actualizar las entradas para el software. Por ejemplo, un calculador profesional de costos guatemalteco podría ajustar las tasas de costos de unidades usados a las tasas locales. La tercera sección de este informe describe la estimación total de costos de recuperación y el software usado. El anexo adjunto contiene las hojas de cálculo. La segunda sección de este informe da un resumen de los riesgos de recuperación presentados por Marlin. Para los lectores no familiarizados con los planes de recuperación, la cuarta sección describe el contenido y nivel de detalle requerido generalmente. 2 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- RIESGOS AMBIENTALES DE LA MINERÍA Aunque la mayoría de empresas mineras son medianamente responsables en cuanto al medio ambiente, siguen ocurriendo desastres monumentales. Algunos ejemplos de desastres relacionados a la minería de oro incluyen los siguientes: · · · · Baia Mare, Rumania: En enero del 2000, una brecha de un dique de colas descargó unos 100,000 metros cúbicos de colas conteniendo mucho cianuro al sistema de ríos. Este derrame descargó aproximadamente 50 a 100 toneladas de cianuro, tanto como metales tóxicos, en particular el cobre, a los Ríos Somes y Tisza y finalmente al Río Danubio antes de llegar al Mar Negro. Omai, Guyana: La brecha de un dique de colas en agosto de 1995 descargó 3.5 millones de metros cúbicos de efluente tóxico que contenía cianuro y metales tóxicos a los ríos Omai y Essequibo. GiltEdge Mine, EE.UU.: Después que la mina cerró en 1992, efluentes de metales tóxicos y ácidos se filtraron desde las escombreras de roca estéril de mina y agua contaminada llenando tres tajos abiertos. El dueño se volvió insolvente en 1999 antes de terminar la limpieza. Subsecuentemente la Agencia de Protección del Medio Ambiente (EPA) de los EE.UU. tuvo que financiar la limpieza. Yanacocha, Perú: La mina ha descargado efluentes de metales tóxicos y ácidos a ríos locales, y estos ríos tienen una corriente disminuida como resultado del consumo de agua por la mina. Los efluentes tóxicos y el bajo nivel de agua impactan el agua potable y la agricultura. También ha ocurrido un derrame de mercurio en tránsito hacia la mina. Ésta es una lista corta de muchos desastres recientes del medio ambiente como resultado de la minería de oro. La Agencia de Protección del Medio Ambiente (EPA) de los EE.UU. (1997, p. 1) resumió de 1990 a 1997, en solo ocho estados, 62 casos de descargas tóxicas y daños al medio ambiente de la minería y el procesamiento de la mena. Cuarenta y nueve de estos casos involucraron colas, pozas, la roca estéril de mina, la solución de procesamiento (por ejemplo, cianuro), agua residual, el drenaje acido de mina y aguas pluviales. Los ejemplos y documento anteriores presentan algunos de los riesgos de la minería de oro, incluyendo derrames de cianuro, brechas y fugas en los diques de colas, y efluentes con metales tóxicos y ácidos. Estos y otros riesgos están ilustrados en figuras 1 a 7. · · La figura 1 muestra un barranco en las colas que erosionó río abajo después de una brecha en el dique de colas. Estas colas inundaron y esterilizaron las milpas de los granjeros río abajo. El fondo del valle estéril en la figura 2 debiera estar cubierto con arbustos de sauce y pozas de castores; sin embargo, el área está contaminada con colas tóxicas que también filtran al arroyo adyacente, matando la vida 3 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin · · · · · - UUSC - COPAE- acuática. Está contaminación ocurrió hace más de 100 años y el área todavía no se ha recuperado. Las colas en la figura 3 tienen de 20 a 80 años. Las colas nunca se secaron completamente y los efluentes de metales tóxicos y ácidos se filtraron al arroyo adyacente durante todo el período. Cuando se tomó la foto, estaban en el proceso de quitar las colas hacia un vertedero seguro. El tajo abierto en la figura 4 se llenó con agua superficial y agua subterránea que se contaminó con los sulfuros y metales filtrados de la roca mineralizada que se quedó en las paredes del tajo. Esta agua contaminó el agua subterránea que salió a los arroyos cercanos. Tal agua también se acumula en minas subterráneas y de una manera similar se contaminan. Una fuente de agua de una mina subterránea se muestra en la figura 5 donde el agua de color naranja es una descarga de metal tóxico y ácido que se mezclan con agua pura. La figura 6 muestra algunos de los más de 150,000 peces muertos por una descarga imprevista de colas al arroyo, similar a las de la figura 3. La figura 7 muestra una planta de tratamiento de agua de una mina con estanques de lodo encima de colas anteriores. Periódicamente se remueve la salida de lodo de la planta de tratamiento a un vertedero. La planta de tratamiento ha operado desde que la mina cerró en los años 1970 y probablemente tendrá que operar perpetuamente. Los riesgos de todas las calamidades mencionadas anteriormente existen en la mina Marlin. También existen otros no mostrados en los ejemplos, el documento y las fotos. Las tierras del sitio se erosionan fácilmente cuando son alteradas y se les remueve la vegetación. Si las aguas superficiales no son controladas cuidadosamente, ni el área es revegetada apropiadamente, podría erosionarse considerablemente y como resultado las tierras no podrían usarse. Río abajo, los suelos erosionados se decantan fuera del agua y llegan a ser sedimentos que atascan los arroyos y cubren tierras adyacentes cuando son movilizadas por el nivel alto del agua durante la temporada lluviosa. Si Montana abandona la mina de manera súbita, quedarán en el sitio productos químicos peligrosos y productos de petróleo que pueden ser vulnerables a descargarse en el medio ambiente. Cuando desastres como los anteriores ocurren, el gobierno, los residentes locales y el medio ambiente son los que sufren las consecuencias. Los ciudadanos que pagan impuestos tienen que financiar los costos de limpieza o la tierra y gente local sufrirán daños severos y duraderos a la salud pública y al medio ambiente. Debido a la historia de empresas mineras huyendo de tales desastres, las autoridades deberían ser agresivas en forzar a las empresas mineras en el cumplimiento de sus responsabilidades. Esto incluye que requieran que la empresa minera aparte el costo total de la recuperación. La sección siguiente provee un cálculo aproximado de los fondos que Montana debería de proveer como fianza de garantía, en el evento que falle en completar 4 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- la recuperación y proteger adecuadamente a la salud pública y el medio ambiente. 5 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin Figura 1 Colas de Millsap, cerca de Victor, Colorado (EE.UU.) Figura 2 Colas de Eureka, cerca de Silverton, Colorado (EE.UU.) 6 - UUSC - COPAE- Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Figura 3 Colas de American Tunnel, cerca de Gladstone, Colorado (EE.UU.) Figura 4 Tajo abierto GiltEdge, cerca de Lead, South Dakota (EE.UU.) 7 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin Figura 5 Descarga de la mina Grand Mogul, cerca de Gladstone, Colorado (EE.UU.) Figura 6 Muerte de peces en Kerber Creek, cerca de Villa Grove, Colorado (EE.UU.) 8 - UUSC - COPAE- Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Figura 7 Planta de tratamiento de agua y colas de Urad, cerca de Empire, Colorado (EE.UU.) 9 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- ESTIMACIÓN DE COSTOS DE LA RECUPERACIÓN La estimación total de costos de recuperación es Q389 millones ($49 millones, el tipo de cambio es de Q8.097 = $1.00), asumiendo que Montana se va de la mina Marlin sin realizar la recuperación adecuada. Esto puede ocurrir si la empresa abandona la mina, si la empresa se declara en bancarrota, o si la empresa cierra por orden del gobierno (aún y cuando sea imprevisto). Esta estimación es el total que el gobierno de Guatemala debiera requerir de Montana en unafianza de garantía para realizar la recuperación de la mina si cualquiera de los sucesos mencionados anteriormente llegara a pasar. Si Montana no realiza la recuperación adecuada, la fianza de garantía puede ser utilizada para recuperar las tierras explotadas, proteger a la gente local y al medio ambiente de daños de largo plazo, y volver las tierras explotadas a su uso anterior. La fianza de recuperación actual de Marlin es $1 millón (Montana Exploradora de Guatemala, S.A., 2010, p. 50). Un análisis de la estimación total de costos de recuperación se presenta en el Cuadro 1. Cuadro 1: La estimación total de costos de la recuperación, trabajo ajustado Tarea de Recuperación Mano de Obra (Q) Equipo (Q) Material (Q) Total (Q) Tratamiento de agua Exploración Caminos Bermas del tajo Cal para tajo Desagüe de tajo Aperturas subterráneas Cal subterránea Desagüe subterráneo Pozas de procesamiento Roca estéril de minay tajos abiertos Vertedero Colas Cimientos y construcciones Extracción de equipo Patios Sedimento y 2,883,410 20,242,500 73,650,312 96,776,222 366,260 326,069 4,603 1,236 62,766 10,514 5,930,972 5,592,501 36,752 26,315 242,910 33,797 774,948 243,388 126,977 749,985 1,093,095 37,270 7,072,179 6,161,957 168,332 777,536 1,398,771 81,582 1,902 34,236 40,485 202,425 578,936 526,305 621,322 762,966 138,934 1,487,613 42,712 1,669,259 2,428,867 45,687,954 347,588 48,464,409 20,094 3,147,584 1,218,871 309,872 51,135,373 7,427,038 13,473 1,374,328 105,520 343,439 55,657,285 8,751,429 163,540 3,396,044 391,756 208,606 5,706,417 622,894 10 3,559,584 460,655 1,551,029 6,558,828 2,382,529 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin Tarea de Recuperación drenaje Eliminación de residuos Cercos Extracción de tubería Líneas de transmisión y subestación Escollerado Monitoreo Administración de construcción Costos indirectos TOTALES Mano de Obra (Q) Equipo (Q) 53,821 140,810 329,804 249,792 852,614 Material (Q) Total (Q) 2,763,061 2,816,882 6,153,720 6,544,323 1,182,418 879,351 6,358,693 1,092,399 2,535,133 22,799,259 - UUSC - COPAE- 879,351 18,831,986 963,090 10,361,958 179,381,302 596,117 4,363,919 60,728 25,786,797 6,419,407 12,957,818 91,308,590 91,308,590 186,922,654 389,103,215 Vale la pena resaltar que las tareas de recuperación que valen más incluyen: · · · · Tratamiento de Agua Superficial para operación indefinida de la planta de tratamiento de agua—total: Q96,776,222/$11,952,108 Roca estéril de minas & tajos abiertos y Colas son costos de movimiento de tierra para renivelarlos taludes empinados y altos de los lados de los tajos; y renivelar, cubrir y revegetar todas estas áreas—total: Q104,121,694/$12,859,293 Sedimento & drenaje y Escollerado (ripio) para controlar erosión—total: Q28,169,326/$3,478,983 Demolición y extracción de edificios, equipo, cables de alta tensión y subestación—total: Q13,190,364/$3,478,983 Los altos costos de tratamiento de agua y movimiento de tierra reflejan el riesgo más grande de la minería, que es la descarga de efluentes tóxicos. Los otros costos son necesarios para devolver las tierras alteradas por la mina a su uso anterior, que en este caso es agricultura y silvicultura. La estimación de costos de recuperación puede ser reducida por recuperación concurrente y salvamento de equipo. Aunque Montana está haciendo alguna recuperación concurrente, los informes anuales de monitoreo no proporcionan ningún detalle (Montana Exploradora de Guatemala, S.A., 2005-2009). Algunas de las áreas que Montana pueda estar recuperando concurrentemente incluyen alteraciones o disturbios de exploración, tajos abiertos y vertederos de roca estéril de mina. Es posible que el equipo de minería y de procesamiento pueda tener algún valor de salvamento y que pueda ser acreditado al costo de recuperación. Sin embargo, ningún valor de salvamento del equipo se incluye en la estimación de costos porque no es posible prever el estado del equipo 11 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- cuando la mina cierre. Es difícil dar un costo-ahorro preciso de cualquier recuperación concurrente, ya que Montana no tiene ningún plan de recuperación público, y los informes anuales de monitoreo son vagos en cuanto a la recuperación completada a la fecha. Aún más importante, ninguna autoridad independiente o gubernamental ha certificado la recuperación realizada hasta la fecha ni la calidad del trabajo realizado. Otra posibilidad para reducir costos sería en el costo de operación de tratamiento de agua, si los efluentes de metales tóxicos y ácidos no se desarrollan en los dos tajos abiertos, la mina subterránea y la roca estéril de mina. Partes de la fianza de recuperación podrían ser devueltas a Montana cuando la recuperación sea completada y certificada o se demuestre que no es necesaria. Puesto que Montana no tiene ningún plan de recuperación público ni planes que muestran los límites finales de la minería y alteración de la tierra, el costo total de recuperación estimado anteriormente se basó en gran parte en el cálculo profesional y experiencia previa en minas similares. Una estimación de costos basada en planes y mapas detallados, datos comprobados y análisis de ingeniería puede resultar mucho más alta. Todas las tareas de recuperación son vulnerables a un aumento en costos, si los parámetros de la evaluación de costos están subestimados. Algunos de los artículos de recuperación que pueden ser significativamente subestimados en esta estimación son la suficiencia de la planta de tratamiento de agua existente para usos futuros; la cantidad de efluentes tóxicos que se desarrollan de los trabajos de la mina, roca estéril de mina y colas; el tiempo necesario para estabilizar las colas; y el trabajo necesario para controlar la erosión y revegetar las tierras alteradas. Montana también planea procesar la mena de otros proyectos cercanos en las instalaciones de la mina Marlin. El impacto de esta actividad en los costos de recuperación no está incluido aquí. El cuadro 2 presenta un resumen de la estimación total de costos de recuperación, basada en costos de los EE.UU. Estos son los costos ajustados para las tasas de mano de obra y moneda para llegar a los costos en el cuadro 1. En el cuadro 1, la mano de obra está ajustada a un 15.66 por ciento de la mano de obra de EE.UU. Este porcentaje se basa en la proporción de Guatemala a EE.UU. del salario promedio mensual para minería y extracción obtenida de la Organización Internacional del Trabajo (OIT) en http://laborsta.ilo.org/. La tasa de cambio utilizada es Q8.097 por $1. Los costos en Guatemala para equipo y suministros importados pueden ser más altos que lo estimado. Por el otro lado, los suministros obtenidos localmente pueden ser menos que lo estimado. La estimación total del cuadro 1 asume que estas diferencias se compensan. Un ingeniero especializado en evaluación de costos locales puede actualizar la estimación con tasas de costos unitarios locales. El 12 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- cuadro 2 está disponible para referencia y seguimiento a las hojas de cálculo detalladas en el anexo. El anexo tiene otro resumen de costos que explica los costos en una manera diferente. Cuadro 2: Estimación total de costos de recuperación, basada en costos de los EE.UU. Tarea de Recuperación Mano de Obra ($) Equipo ($) Material ($) Total ($) Tratamiento de agua Exploración Caminos Bermas del tajo Cal para tajo Desagüe de tajo Aperturas subterráneas Cal subterránea Desagüe subterránea Pozas de procesamiento Roca estéril de mina y tajos abiertos Vertedero Colas Cimientos y construcciones Extracción de equipo Patios Sedimento y drenaje Eliminación de residuos Cercos Extracción de tubería Líneas de transmisión y subestación Escollerado Monitoreo Administración de construcción Costos indirectos TOTALES 2,274,000 2,500,000 9,096,000 13,870,000 288,851 257,154 3,630 975 49,500 8,292 732,490 690,688 4,539 3,250 30,000 4,174 95,708 30,059 15,682 92,625 135,000 4,603 1,117,049 977,901 23,851 96,850 214,500 17,069 1,500 27,000 5,000 25,000 71,500 65,000 78,000 117,000 109,570 183,724 5,275 298,569 1,915,525 5,642,578 42,928 7,601,031 15,847 2,482,341 961,262 38,270 6,315,348 917,258 1,664 169,733 13,032 55,781 8,967,422 1,891,522 128,976 419,420 308,958 164,517 704,757 76,929 42,446 111,050 260,100 30,850 105,300 548,396 56,892 191,556 1,070,607 433,002 341,245 383,691 760,000 901,900 365,400 693,500 5,014,781 861,520 1,999,332 17,980,627 693,500 2,325,798 118,944 1,279,728 22,154,045 13 73,622 538,955 7,500 7,414,201 1,519,419 3,286,560 11,276,842 11,276,842 23,085,421 63,220,093 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- TAREAS DE RECUPERACIÓN La recuperación propuesta en esta estimación de costos tiene el objetivo de minimizar los impactos de la minería en la población local y el medio ambiente y devolver las tierras alteradas a su uso anterior,lo más posible, dado el estado actual de la tecnología para la recuperación. Por uso anterior se entiende devolver tanto de la tierra como sea posible a la agricultura, pastoreo y silvicultura. Asegurar que estas tierras vuelvan a sus usos anteriores puede ser un proceso largo, quizás de quince años o más. Para devolver las tierras alteradas a su uso anterior, se tienen que remover todas las instalaciones y equipo superficial. Las tierras alteradas tienen que ser contorneadas a su estado natural, cubiertas con medios de cultivo y revegetadas. Adicionalmente, el agua superficial tiene que ser controlada para prevenir la erosión y los subsiguientes daños por sedimentación pendiente abajo del riachuelo. El mayor riesgo ambiental es la liberación de efluentes de metales tóxicos y ácidos de los tajos abiertos (Marlin y Cochise), la mina subterránea, la roca estéril de mina descargada en la superficie y las colas. El agua superficial y subterránea pasa por la mineralización sulfurosa en la roca de la mina. El agua disuelve los metales sulfurosos y se vuelve ácida. Este proceso generalmente se define como drenaje ácido de roca (DAR). Hay dos defensas en contra del DAR. La primera defensa incluye varias medidas de control de fuentes diseñadas para prevenir la formación del DAR. La segunda línea de defensa es recolectar cualquier DAR, sacar los componentes tóxicos en una planta de tratamiento de agua y liberar el agua limpia a las vías fluviales cercanas. Los lodos tóxicos recogidos por la planta de tratamiento de agua tienen que ser retenidos en un vertedero en el sitio, diseñado por ingenieros calificados. Este tratamiento puede ser necesario indefinidamente, como en el caso de minas históricas donde el DAR se descarga por décadas y siglos después de terminada la minería. El control de fuente involucra bloquear los ingredientes en las reacciones químicas que forman el DAR. En el caso de la mina Marlin, esto significa bloquear el agua y oxigeno de contacto con minerales sulfurosos en la roca dejada expuesta por la minería. Estos son dos de los ingredientes necesarios para crear el DAR. Los métodos de control de fuente usados en esta estimación de costos incluyen aplicar la cal en los suelos sulfurosos y la roca sulfurosa expuesta, compactar tierras para minimizar la filtración de agua y desviar las aguas superficiales lejos de estas áreas.Es muy difícil detener el DAR después de que las reacciones químicas han iniciado, por lo que es probable que cualquier medida de control de fuente sea exitosa solamente de manera parcial. Las colas son una pulpa de roca finamente molida, químicos procesados y agua de procesamiento que sobran después de que la planta de procesamiento haya removido los minerales valiosos de la mena. El agua contiene los mismos metales tóxicos que el DAR más algunos químicos de procesamiento. Las colas 14 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- están contenidas atrás de una presa y llenan un pequeño valle. El agua tóxica de las colas puede derramarse durante tormentas y también continuamente infiltrar agua subterránea ubicada inmediatamente gradiente abajo de la presa. Debajo de la presa, hay pozos de agua subterránea que fueron construidos para interceptar los efluentes tóxicos y bombear el agua tóxica a la poza. (Esta poza es nombrada “poza de infiltración” por Montana.) Desde esta poza, el agua tóxica capturada es bombeada de vuelta a las colas. La segunda línea de defensa para prevenir la liberación de descargas tóxicas es recoger cualquier DAR que pasa por las medidas de control de fuente, recoger agua tóxica en las colas y el agua subterránea abajo del dique de colas y procesar estas descargas en una planta de tratamiento de agua. Los lodos removidos desde el agua tienen que ser retenidos en un vertedero a prueba de filtraciones. Montana construyó una planta de tratamiento de agua para procesar las colas y extraer componentes tóxicos. Esta estimación de costos asume que la planta de tratamiento de agua existente es adecuada para necesidades futuras. La planta de tratamiento pudiera tener que operar indefinidamente. Los siguientes sub-párrafos describen todas las tareas de recuperación que son la base para la estimación total de costos de recuperación, tal como figura en los cuadros anteriores. Los títulos de la mayoría de los sub-párrafos son igual que las hojas de cálculo en el anexo. Sin embargo, algunas de las tareas de recuperación se encuentran en varias hojas de cálculo o son sólo un artículo de varios en una hoja de cálculo particular.Los siguientes sub-párrafos nombran la hoja de cálculo donde se encuentra la tarea. Las traducciones al español siguen en cursiva, para encontrar más fácilmente las hojas de cálculo en el anexo. Una excepción es el tratamiento de agua, cuya aproximación viene de varias fuentes. Las hojas de cálculo del anexo se presentan en el orden siguiente: 1. 2. 3. 4. Portada con información de bases de costo Índice de contenido Resumen de costos a 26. Hojas de cálculo con costos detallados Las citas para cada línea de entrada en notas numeradas. autores asumieron datos de recuperación de minas. Las sub-párrafos. datos de entrada siguen en el cuadro de datos de Donde las citas tenían información incompleta, los entrada de su propio cálculo y experiencia en la suposiciones claves están dadas en los siguientes Tratamiento de Agua Q96,776,222/$11,952,108 Marlin ya tiene una fuente de descargas tóxicas y tres posibles fuentes que pueden desarrollarse con el tiempo. 15 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- La fuente de descargas que existe (las colas) contiene aguas tóxicas. Esta agua se está infiltrando al agua subterránea, en la parte debajo del dique de colas. (Etech, 2010; MEG 2009, p. 61; MARN 2008-2010, D6 samples; Robertson 2009, p. 6,11) Actualmente Montana tiene pozos subterráneos que están bombeando el agua contaminada a una poza y después de vuelta a las colas. Este bombeo de agua probablemente debe continuar indefinidamente o hasta que ya no exista más contaminación del agua subterránea. Si no se remueve por bombeo, la pluma de agua subterránea contaminada se expandirá y eventualmente llegará a nacimientos de agua o aguas río abajo. El agua debe ser tratada para que se remuevan todos los componentes tóxicos, antes de devolverla a la corriente que se encuentra río abajo. Además, el agua tóxica en las colas requiere de tratamiento para poder completar la fase final de recuperación del área de las colas. Los sólidos de las colas, no se están decantando del agua tóxica como se esperaba (Robertson 2009, p. 6, 11). Para desaguar las colas, deben ser tratadas para separar los sólidos del agua. El agua se debe tratar para remover componentes tóxicos y luego ser liberada. Los sólidos separados deben ser removidos a un vertedero en el sitio, diseñado por ingenieros calificados. El tratamiento de la pluma de agua subterránea y las aguas de las colas puede requerir de muchos años e incluso décadas. Las otras tres posibles fuentes de descargas tóxicas son los tajos Marlin y Cochise, la mina subterránea y la roca estéril de mina descargada en la superficie. Todas estas instalaciones contienen rocas sulfurosas expuestas que pueden filtrar efluentes de metales tóxicos y ácidos, también conocido como drenaje ácido de roca (DAR). Montana informa que ha tomado medidas de control de fuente para prevenir el DAR, como renivelarlos taludes empinados de los tajos, colocar relleno cementado dentro de la mina subterránea en las partes donde se ha sacado la mena, encapsular cualquier roca estéril sulfurosa profundamente dentro de roca estéril neutral y colocar una capa de suelo sobre la roca estéril de mina. Sin embargo, estos pasos son notorios por tener un éxito limitado. En las tareas de recuperación que se encuentra más adelante, se proveen pasos de control adicionales para minimizar el riesgo del DAR. Si estas medidas no tienen éxito, el DAR necesitará de tratamiento indefinidamente. Esta tarea de recuperación hace provisión para operar la planta de tratamiento de agua de manera indefinida, para tratar efluentes del dique de colas y agua tóxica contenida en las colas y posiblemente el DAR. El software que estima costos no incluye el estimado para el tratamiento de agua. Además, Montana no ha hecho públicos los detalles de la planta de tratamiento de agua a partir de los cuales se podría estimar los costos. Costos de operación para el tratamiento de agua generalmente varían entre $1 a $4 por mil galones de agua tratada. Si se asume una tasa razonable de $1.50 por mil galones para el tratamiento de agua en la mina Marlin, los costos de operación son: 16 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- 1. Costo total para tratar el agua en las colas: $4,800,000 según los 20 millones de metros cúbicos de colas (Howell&Christopherson, 2009) con contenido (la densidad de las colas es de 1 tonelada métrica por metro cúbico) (Robertson, Montana Exploradora de Guatemala, 2009 Annual Monitoring Report, Appendix E, p. 11) 2. Costo anual para el tratamiento de agua subterránea y DAR: $394,200 anuales, asumiendo que se necesita el tratamiento de 500 galones por minuto de agua subterránea contaminada y DAR. Una cuenta de banco en custodia con un interés de seis por ciento de interés anual, requeriría de $6,570,000 para pagar los costos anuales de operación Si la planta debiera ser operada indefinidamente, se necesitará de fondos adicionales para reemplazar el equipo viejo. El costo típico de una planta de tratamiento de agua como la que tiene la mina Marlin, es de alrededor de $5 millones, sin incluir los costos de diseño e ingeniería. Proveer la mitad del monto, para reemplazar equipo viejo con el tiempo, requerirá de $2.5 millones. No se necesita proporcionar totalmente el costo de construcción inicial de $5 millones puesto que mucho de este costo original incluye fondos para artículos, los cuales no necesitarán ser reemplazados, como la preparación del sitio y los cimientos. El monto total requerido para la fianza de recuperación para el tratamiento de agua es de $13,870,000, las tres cantidades resaltadas en negrita previamente. Exploración Q7,072,179/$873,432 Hojas de Cálculo: Exploration (Exploración), Exploration Roads & Pads (Caminos y bancadas para exploración) Montana ha perforado y continúa perforando agujeros de exploración en varios depósitos minerales para tomar muestras de mena posible. Estas perforaciones han ocurrido más en particular en Marlin, la Hamaca y West Vero. Cualquier revestimiento de las perforaciones debe ser removido. Las perforaciones deben ser rellenadas en todo su largo para prevenir el entrecruzamiento de acuíferos que hayan sido penetrados por las perforaciones, así como para prevenir posibles daños a las personas y animales que puedan tropezarse en las perforaciones. La estimación de costos provee para el taponamiento de las perforaciones con lechada de cemento. También existen un número de pozos que proveen de agua, y pozos de monitoreo que deben ser rellenados de manera similar, durante la fase final de la recuperación. El número de perforaciones en las principales áreas de exploración y sus profundidades se encontraron en diferentes fuentes, sin embargo, existe poca información sobre el largo del revestimiento en ellas y la profundidad a la que el agua fue encontrada. Esta información fue asumida. 17 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Los caminos de acceso, bancadas de perforación y sumideros de exploración deben ser renivelados a formaciones de terreno natural, cubiertos con medios de cultivo y revegetadas. No se obtuvo información sobre caminos de acceso y bancadas para perforación en La Hamaca y West Vero, esta información tuvo que ser asumida. El largo y ancho del camino de acceso hasta los pozos que proveen de agua se obtuvo de un mapa de Marlin (Comisión Gubernamental para Analizar el Fenómeno de Agrietamiento de Paredes en Algunas Casas Adyacentes al Proyecto Minero Marlin I, 2010). El costo de recuperación para caminos de acceso dentro del área del proyecto Marlin se incluyen en Caminos. Es posible que Montana haya completado parte de este trabajo de recuperación. Sin embargo, hasta que el trabajo esté certificado como completado adecuadamente, cualquier fianza de garantía para la recuperación debiera proveer para hacer el trabajo. Caminos Q6,161,957/$761,017 Hoja de Cálculo: Roads (Caminos) Los caminos que requieren recuperación incluyen los caminos muy anchos de acarreo desde los tajos abiertos de Marlin y Cochise a la trituradora y escombrera de roca estéril de mina, pista de aterrizaje y otros caminos en el sitio. Estos caminos deben ser renivelados a formaciones de terreno natural, cubiertos con medios de cultivo y revegetados. La pista de aterrizaje está pavimentada con asfalto, el costo de remover y tratar el asfalto está incluido en Eliminación de Residuos. Bermas de Tajos Q168,332/$20,789 Hoja de Cálculo: Pit Berms (Bermas de Tajos) Se deben construir bermas alrededor de los tajos abiertos Marlin y Cochise para prevenir tráfico vehicular que puede afectar la recuperación delos tajos abiertos. Tratamiento de Cal para Tajo Q777,536/$96,028 Hoja de Cálculo: MiscellaneousCosts (Costos Misceláneos) Se debe aplicarla cal a la roca sulfurosa en los tajos abiertos para neutralizar cualquier producto de lixiviación de metales tóxicos y ácidos que pueda formar. Los costos estimados, asumen que se aplican 10 toneladas por acre (Skousen& McDonald, 2005) sobre un área de 65 acres (263,045 mt2). Este cálculo (área de acres) asume que mucha de la superficie del tajo es de roca sulfurosa. Puede que este no sea el caso, y un análisis detallado por un ingeniero profesional e independiente puede resultar en un cálculo menor de acres. Adicionalmente, puede ser que exista roca carbonática que ayude a neutralizar el sulfuro. Desagüe de Tajos Q1,398,771/$172,752 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) La renivelación del talud del tajo Marlin puede dejar una depresión en el fondo del tajo en donde se puede acumular el agua que puede llegar a ser 18 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- contaminada por efluentes de metales tóxicos y ácidos. Cuando esta agua se eleve hasta el punto más bajo del borde de la depresión, el agua empezará a derramarse en la ladera del sur, arriba del río Tzalá. La estimación de costos incluye el corte de una trinchera desde el fondo del tajo hasta la ladera periférica que se encuentra hacia el sur; instalar una alcantarilla con un tubo elevado perforado en el fondo del tajo y rellenar la trinchera. Esta alcantarilla drena cualquier acumulación de agua en el fondo del tajo hasta una poza de revestido desde donde se bombea a la planta de tratamiento de agua. La poza debe tener un revestimiento geo-sintético adecuado para prevenir la filtración de los efluentes de metales tóxicos y ácidos ya desde la poza. La estimación de costos se basa en una poza (incluido en Control de Sedimento y Drenaje) con una capacidad y una bomba con velocidad de bombeo adecuado para tratar en caso de una tormenta de 24 horas como los últimos 100 años, con precipitación de 219 milímetros (Robertson, 2009, p.9) sobre 65 acres (263,045 mt2). La estimación de costos provee para una bomba de velocidad de 500 galones por minuto y una tubería de distribución de 6,600 pies de largo con una carga de agua de 200 pies. Es posible que este desagüe del tajo se requiera indefinidamente. El desagüe de tajo similar, no se incluye para el tajo abierto Cochise ya que va directamente a un drenaje que fluye a las colas. Cuando las colas han sido tratadas y recuperadas, será necesario construir una tubería desde el tajo abierto Cochise hasta la planta de tratamiento de agua si este tajo abierto comienza a descargar los efluentes de metales tóxicos y ácidos. Aberturas Subterráneas Q81,582/$10,076 Hoja de Cálculo: Underground Openings (Aberturas Subterráneas) La mina subterránea tiene dos aberturas hacia la superficie: una rampa descendente y una chimenea de ventilación. La estimación de costos provee para un tapón de concreto y roca en la portal descendente y una tapadera de concreto para la abertura de la chimenea de ventilación. Agua de la Mina Subterránea Cuando la mina cierre, existe el riesgo de que los trabajos subterráneos sean llenados con agua que pueda acumular efluentes de metales tóxicos y ácidos provenientes de rocas sulfurosas que están alrededor. Subsecuentemente esta agua tóxica puede migrar al agua subterránea y después a los manantiales de agua superficial y ríos. Como Montana está rellenando algunas áreas de la mina con roca estéril de mina cementada, el cemento está tamponando cualquier ácido que se forma actualmente. Este proceso de tamponar quizás no dure en el largo plazo, y por eso se incluyen dos tareas de recuperación para minimizar el riesgo de una descarga de metales tóxicos y ácidos. Tratamiento subterráneo con cal Q621,322/$76,735 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) Se debe aplicar cal en los trabajos subterráneos para neutralizar cualquier formación de productos de lixiviación de metal tóxico y ácido. El volumen 19 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- del agua de la mina se calcula es de 1.1 millón de metros cúbicos, el cual es el volumen estimado de los trabajos del desarrollo subterráneo en el momento en que se ejecute el cierre planeado de la mina. Este volumen no incluye las áreas en donde será o ha sido removida la mena, ya que Montana está rellenando estas áreas con roca estéril de la mina cementada. La cantidad de cal se estima en base al agua de la mina, la cual tiene 500 miligramos de sulfato por litro (Montana Exploradora de Guatemala S.A., 2007, p. Ann. C, D1) y una eficiencia de neutralización de cal de 0.82 (Skousen, Hilton & Faulkner, 2010). Desagüe de Mina Subterránea Q762,966/$94,228 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) En el caso de que la aplicación de cal antes mencionada, resulte inadecuada, la estimación de costos hace provisión para la perforación de un hoyo (pozo de agua) desde la superficie hasta un sumidero en el punto más bajo de los trabajos para desaguar la mina. La perforación debe ser equipada con tubo y bomba sumergible dentro del pozo, ambos resistentes al ácido, para remover efluentes de metales tóxicos y ácidos desde la mina a la planta de tratamiento de agua. La velocidad asumida es de 150 galones por minuto con una carga de agua de 475 metros. Este desagüe y tratamiento de agua podrían ser requeridos indefinidamente. Pozas de Procesos Q1,669,259/$206,158 Hoja de Cálculo: Process Ponds (Pozas de Procesos) Existen tres pozas de proceso que requieren de recuperación. La primera es para almacenar agua bombeada de los pozos que proveen agua; la segunda es de sedimento, al sur del tajo Marlin; y la tercera es una poza de infiltración para agua subterránea contaminada bombeada desde abajo del dique de colas. Montana planea una segunda instalaciónde colas (Robertson, 2009, p.4) y la estimación de costos incluye la recuperación de una poza de infiltración adicional para la segunda instalación. Esta hoja de cálculo no incluye ninguna poza construida para el control de sedimentos y la recuperación final. Estas pozas se incluyen bajo Control de Sedimento y Drenaje. Roca Estéril de Mina y Tajos Abiertos Q48,464,409/$5,985,477 Hoja de Cálculo: Waste Rock Dumps (Escombreras de roca estéril) Montana ha declarado que la escombrera de roca estéril de mina en uso actual está siendo recuperada concurrentemente. Sin embargo, los informes anuales de monitoreo no proveen ninguna información específica sobre esta recuperación y no existe certificación independiente de que esta recuperación ha sido completada apropiadamente. La estimación de costos provee para la renivelación de los lados empinados de la escombrera de roca estéril de mina hasta una pendiente más plana, de máxima horizontal a vertical a razón de 2.5:1 para minimizar la erosión y promover la revegetación. Las áreas reniveladas deben ser compactadas, cubiertas con medios de cultivo y revegetadas. La 20 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- reducción de pendiente reduce el riesgo de erosión. La compactación reduce el riesgo de que el agua superficial infiltre dentro de la escombrera donde pueda reaccionar con la roca sulfurosa de la escombrera, produciendo efluentes de metales tóxicos y ácidos. De manera similar, los taludes empinados de los tajos abiertos deben ser renivelados hasta una pendiente más plana, de máximo horizontal a vertical a razón de 2.5:1, para minimizar la erosión de las superficies finales delos tajos abiertos y para promover la revegetación sostenible. Aunque el nombre de esta hoja de cálculo refiere solamente a las escombreras de roca estéril, los cálculos de movimiento de tierra también son aplicables al removimiento de tierra de los taludes empinados de los tajos, de la pendiente actual hasta una pendiente más plana requerida. La estimación asume que el movimiento de tierra no requiere la voladura. Existe otra escombrera de roca estéril de mina que se llama “Área 5.” Esta escombrera ya no es utilizada y ha sido cubierta. Una muestra de agua de esta área demuestra poca contaminación en los efluentes de la roca estéril de mina (Ministerio de Ambiente y Recursos Naturales, 2007). La estimación de costos provee sólo para cubrir y revegetar esta área, la cual se encuentra bajo Patios. Vertedero Q343,439/$42,416 Hoja de Cálculo: Landfill (Vertedero) Marlin tiene un vertedero de desechos sólidos para desechos no peligrosos que requiere cierre y recuperación cuando la mina cierre. Cualquier material de construcción que no haya sido salvado en la demolición de las estructuras también debe de ser depositado en este vertedero. Colas Q55,657,285/$6,873,815 Hoja de Cálculo: Tailings (Colas) Las instalaciones de colas existentes alcanzarán su capacidad máxima a menos de un año (Robertson, 2009, p.4) y se requerirá una segunda instalación para colas futuras. La estimación de costos provee para la recuperación de las colas existentes y una segunda instalación de colas de dimensiones similares. Esta estimación puede subestimar los costos de recuperación, debido a que la nueva instalación de colas puede tener una capacidad de almacenamiento mayor que la instalación existente. La estimación de costos se basa en cubrir las colas, primero con una capa de suelo de baja permeabilidad, compactada, de 24 pulgadas de espesor. La segunda es una capa para drenaje, de 12 pulgadas de espesor. La tercera capa, o capa superior de la cubierta de las colas es de medios de cultivo, de 24 pulgadas de espesor (United States Environmental Protection Agency, 1989, p. 9). Esta capa es más espesa que la capa para la escombrera de roca estéril de mina, los tajos abiertos y los patios porque las colas son tóxicas y deben ser separadas del medio ambiente cuidadosamente. 21 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Pueden pasar años o décadas antes de que las instalaciones de colas existentes puedan ser finalmente recuperadas. Las partículas sólidas en las colas no se están asentando del agua con la velocidad esperada (Robertson, 2009, p. 6, 11) y la superficie posiblemente no volverá a ser suficientemente sólida para ningún trabajo por un largo tiempo. La operación de la planta de tratamiento de agua facilitará el desagüe de las colas. Adicionalmente, se está considerando un plan para desaguar colas futuras por filtración, y alternativamente, una cubierta de agua para las colas ha sido sugerida (Robertson, 2009, p. 3). La presa de colas existente se está asentando más de lo esperado, aproximadamente un tres por ciento hasta la fecha (Robertson, 2009, p. 13). La estimación de costos provee para añadir dos aumentos de nivel, ambos de 100 pulgadas (tres por ciento de la altura de la presa) encima de la presa para mantener su altura diseñada. Demolición de cimientos y construcciones Q8,751,429/$1,083,232 Hoja de Cálculo: Foundations and Buildings Demolition (Demolición de cimientos y construcciones) La estimación de costos provee para desmantelar todas las construcciones, la demolición de losas y enterramiento de los cimientos en su lugar. Las áreas afectadas deben ser cubiertas y revegetadas. A pesar de que sea posible que la municipalidad o algunas organizaciones quieran utilizar algunas de las construcciones después de que termine la minería, la estimación de costos se ha hecho para remover las construcciones ya que no existe certeza de que se conservaran. Podría existir algún valor de salvamiento en algunas construcciones cuando la mina cierre; sin embargo no existe certeza de que las construcciones tendrán algún valor y algunas pueden quedar inutilizadas al ser contaminadas por químicos de procesamiento. Extracción de equipo Q3,559,584/$439,618 Hoja de Cálculo: Equipment Removal (Extracción de equipo) El equipo de procesamiento y tanques de almacenamiento deben ser desmantelados y removidos. El volumen de dos de los tanques fue asumido para estimar los costos ya que no se encontró el volumen de ellos en los documentos de Montana. El equipo y vehículos mineros deben ser removidos. La estimación de costos provee para remover el equipo y venderlo en la ciudad de Guatemala. Los fondos obtenidos de la venta se pueden acreditar a la fianza. Patios Q6,558,828/$810,031 Hoja de Cálculo: Yards (Patios) Áreas de almacenamiento, sitios de construcción, parqueos y otros patios requieren ser rastrillados (escarificados), cubiertos con medios de cultivo y 22 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- revegetados. La estimación de costos es adecuada para incluir la caracterización química de cualquier suelo que haya sido contaminado con productos de petróleo y otros contaminantes. Los suelos contaminados por petróleo deben ser removidos y depositados en la celda de bio-remediación. Control de Drenaje de Sedimentos Q2,382,529/$294,248 Hojas de Cálculo: Sediment and Drainage Control (Sedimento y Control de Drenaje), Miscellaneous Costs (Costos Misceláneos) Para minimizar la erosión y el riesgo de efluentes de metales tóxicos y ácidos, la estimación de costos hace provisión para zanjas perimetrales para desviar el agua superficial para que no fluya sobre los tajos abiertos renivelados, las escombreras de roca estéril y las colas. Todas estas zanjas drenarán hacia pozas de sedimento en las que se decantan el sedimento llevado por el agua. La zanja perimetral del tajo Marlin es de dos secciones, una en torno del término oriental y la segunda en torno del término occidental, con una poza al término de ambas secciones. Mientras que, para las colas existentes, se encuentran dos pozas de sedimento bajo del dique de colas, la estimación de costos provee para la reconstrucción de ambas pozas. Las pozas actuales quizás no sean funcionales cuando cierre la mina. Las pozas de sedimento requerirán la extracción de sedimentos atrapados periódicamente. Debido a que la escombrera de roca estéril tiene un talud muy largo, la superficie debe tener zanjas de contorno paralelas espaciadas uniformemente a través del tope y los lados. Esta desviación minimiza la formación de riachuelos y barrancos en la escombrera y también minimiza la infiltración de agua por precipitación directa. Estas zanjas deben ser revestidas de concreto (véase la hoja de cálculo Miscellaneous Costs (Costos Misceláneos) para el revestimiento de concreto como fue recomendado por Robertson (2009, p. 15). El espaciamiento entre las zanjas de contorno paralelas debe ser de 50 metros horizontales. Estas zanjas fluirán en las zanjas perimetrales descritas anteriormente. Los costos unitarios del revestimiento de concreto fueron obtenidos de la guía RS Means Building Construction Cost Guide (1999, p. Sec. 033 130 4840). La poza de sedimento oriental del tajo Marlin realiza una doble función, recibiendo el agua desde la zanja perimetral oriental y el agua drenada desde el fondo del tajo (véase Desagüe de Tajo). La poza debe ser revestida con un revestimiento geosintético adecuado en caso que las aguas del fondo del tajo desarrollen los efluentes de metales tóxicos y ácidos. Eliminación de Desechos Q2,816,882/$347,892 Hojas de Cálculo: Waste Disposal (Eliminación de Desechos), User 1 (Usuario 1) Marlin tiene una pista de aterrizaje de asfalto. La estimación de costos provee para remover el asfalto y tratarlo en una celda de bio-remediación. Esta tarea de 23 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- recuperación probablemente es adecuada para remover otras pequeñas áreas de suelo contaminado por hidrocarburos en el área del proyecto. Marlin tiene un incinerador para el desecho de material químico radioactivo. La estimación de costos se ha hecho asumiendo que se operará el incinerador por 10 días para incinerar cualquier envase y basureros abiertos que contengan desechos radioactivos. El incinerador tiene una capacidad de 400 libras por hora (Montana Exploradora de Guatemala S.A. 2006). Los costos unitarios fueron obtenidos de la guía RS Means Building Construction Cost Guide (1999, p. Sec. 111 701 4480). La estimación de costos asume que los recipientes no-abiertos de materiales químicos radioactivos y no radioactivos pueden ser devueltos a los proveedores a un costo menor que su valor de devolución. Cercos Q6,544,323/$808,240 Hoja de cálculo: Miscellaneous Costs (Costos Misceláneos) El cerco existente alrededor de los límites del proyecto debe ser removido y un cerco nuevo debe ser instalado. El nuevo cerco tendrá un perímetro más pequeño, cubriendo solamente las colas, la planta de tratamiento de agua y la poza de sedimento oriental del tajo Marlin. El nuevo cerco protegerá estas áreas contra cualquier intrusión pública hasta que se cierre finalmente y se termine su recuperación. La recuperación final de estas instalaciones se espera que sea completada mucho tiempo después que el otro trabajo de recuperación. Extracción de tubería Q1,182,418/$146,031 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) Las tuberías terrestres que deben ser removidas son las tuberías que proveen agua desde los pozos de abastecimiento a la poza de agua cruda, tuberías entre la planta de procesamiento y ambos, la instalación de colas hasta las colas y nueva tubería incluida en esta estimación de costos, desde la poza de sedimento oriental del tajo Marlin a la planta de tratamiento de agua. El largo de las tuberías hasta la instalación existente, ha sido doblado en la estimación de costos para incluir el costo de la extracción de las tuberías hasta la nueva instalación de colas. El costo de demolición de estructuras se supone que es adecuado para incluir la eliminación de cualquier tubería dentro y alrededor de las varias estructuras. Tendido Eléctrico y Subestación Q879,351/$108,602 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) La estimación de costos incluye la extracción de dos líneas de tendido eléctrico y una subestación. Una línea de tendido eléctrico es de alto voltaje entrante que llega desde la planta eléctrica de Tejutla. La segunda línea de tendido eléctrico es una línea de menor voltaje hacia los pozos que proveen agua. El costo estimado de demolición de estructuras se supone que es adecuado para incluir la extracción de la distribución de electricidad que se encuentra en el sitio. 24 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Escollerado Q25,786,797/$3,184,735 Hoja de Cálculo: Miscellaneous Costs (Costos Misceláneos) La estimación de costos provee para revestir todas las zanjas perimetrales de desviación y los derramaderos de las pozas de sedimento con escollerado (ripio). El escollerado protegerá la integridad de las zanjas y de los derramaderos por largo tiempo. La roca en la fachada y en el derramadero de la presa del dique de colas se encuentra alterada por exposición a la intemperie y se está degradando (Robertson, 2009, p. 5, 10). La estimación de costos también hace provisión para la colocación de escollerado en estas superficies. Ya que la roca en el sitio es inadecuada para escollerado, la estimación de costos asume que la fuente del escollerado está afuera del sitio.Estas tareas de recuperación no están incluidas para la nueva instalación de colas ya que se asume que esta instalación será construida adecuadamente. Monitoreo Q6,419,407/$792,813 Hoja de Cálculo: Monitoring (Monitoreo) La estimación de costos provee para monitorear roca estéril de mina (incluyendo el “Área 5”), vertederos, colas y diques de colas, revegetación, agua subterránea y superficial y cualquier efluente tóxico por un período de quince años. Esta tarea requiere de lo siguiente: · Muestreo y análisis de roca estéril de mina y colas, así como de agua subterránea y superficial para medir contaminantes. · Medición de la integridad y estabilidad de las escombreras de roca estéril de mina, vertederos, colas y diques de colas con inclinómetros y monumentos de agrimensura. · Muestreo de colas para la densidad y el contenido de humedad. · Muestreo de revegetación para la densidad y la riqueza de especies. · Inspección para la erosión y sedimentación. La tarea incluye interpretar e informar los resultados del monitoreo a las autoridades y partes interesadas. La estimación de costos para esta tarea no incluye el monitoreo de la planta de tratamiento de agua mencionada anteriormente ya que se incluye en los costos de operación de la misma. Administración de Construcción Q12,957,818/$1,600,323 Hoja de Cálculo: Construction Management (Administración de Construcción) El período de recuperación después del fin de explotación de la mina, se espera requerirá de un año. Después de este plazo, la supervisión requerida para el sitio será para el tratamiento de agua, monitorear y mantener el sitio. Costos Indirectos Q91,308,590/$11,276,842 Hoja de Cálculo: Cost Summary (Resumen de costos) La estimación de costos añade automáticamente costos indirectos basados en el tamaño del proyecto de recuperación. Estos costos incluyen un artículo“BLMIndirectCost.” Este artículo es el costo para monitorear el 25 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- cumplimento de la recuperación por parte de las agencias gubernamentales que lo supervisarán, el cual en este caso irá al MEM y al MARN. METODOLOGÍA DE LA EVALUACIÓN DE COSTOS La estimación de costos de recuperación fue preparada con un programa de Excel desarrollado conjuntamente por el estado de Nevada (EE.UU.), otras agencias gubernamentales de los EE.UU. y la industria minera (Nevada Division of Environmental Protection, 2010). El nombre del programa es Standardized Reclamation Cost Estimator (Estimador Estandarizado de Costos de Recuperación) (SRCE, por sus siglas en inglés), más información sobre el software está disponible en el sitio web: http://www.nvbond.org/index.htm SRCE tiene las siguientes ventajas: · · · · Es específico para la industria minera, Es aceptado tanto por el gobierno como por la industria, Utiliza tasas de costo actualizadas, y Está disponible inmediatamente en la página web mencionada anteriormente. Existen otros programas de software para estimar los costos de recuperación, incluyendo RACER (U.S. Air Force & U.S. Environmental Protection Agency, 2008) y Sherpa (Aventurine Engineering, Inc., 2010). La Agencia de Protección Ambiental de los EE.UU. y la Fuerza Área de Estados Unidos desarrollaron RACER para calcular los costos de recuperación para todo tipo de sitios con materiales peligrosos. Este programa requiere la introducción de datos específicos que Marlin no tiene disponibles al público. Sherpa tiene una reputación excelente y su autor provee además de un servicio de evaluación de costos mineros que es usado ampliamente por la industria minera. A principios de los años 90 la Agencia de Minas de los EE.UU. publicó una guía de estimación de costos de minería la cual incluye recuperación y costos de tratamiento de agua (U.S. Bureau of Mines). La versión específica del programa SRCE y las tasas de costo utilizadas aquí se encuentran en la portada de la estimación de costos (véase Anexo). Los datos de entrada sobre las dimensiones para el programa SRCE se obtuvieron de varias fuentes de Montana, las cuales están enumeradas en la sección de Obras Citadas en este informe. Las notas que se encuentran después de los datos de entrada en las hojas de cálculo de SRCE indican referencias específicas para la información. En los casos en que la información de Montana está incompleta los autores se basaron en su experiencia y juicio profesional para calcular los datos. 26 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- La estimación de costos elige equipo para remover tierra, de tamaño pequeño a mediano en vez del equipo de gran escala usado por Montana. Esta selección asume que un contratista local con equipo de tamaño típico para la construcción de caminos será el encargado de realizar la recuperación, ya que es posible que el equipo de Montana no esté disponible o en condiciones de operar en el momento de la recuperación. La estimación de costos utiliza tasas de unidades de costos de los Estados Unidos. Los costos totales se ajustan a las tasas de trabajo local, convertidas a quetzales, utilizando el factor de conversión al momento de preparación de la estimación de costos. Para una estimación de costos más precisa, un estimador profesional guatemalteco, podría ajustar las tasas de costo unitario utilizadas aquí, a las tasas locales. El programa SRCE no provee específicamente para la evaluación de costos de todas las tareas de recuperación requeridas en Marlin. En particular, no tiene hojas de cálculo para renivelar tajos abiertos, tratar aguas tóxicas y operar el incinerador de desechos peligrosos. Para renivelar los tajos abiertos fue posible adaptar la hoja de cálculo de Waste Rock Dumps (Escombreras de Roca Estéril). Para el tratamiento de agua y la incineración, SRCE se complementó con fuentes de estimaciones y publicaciones profesionales. Es muy posible que existan defectos en la estimación de costos. Muchos de los datos de entrada se obtuvieron del Estudio de Evaluación de Impacto Ambiental y Social de Marlin (Montana Exploradora de Guatemala, S.A., 2003). Este documento ahora está desactualizado siete años y algunos de los datos necesarios para los propósitos de la evaluación de costos están incompletos. De la misma manera, hay datos que se obtuvieron de los informes anuales de monitoreo (Montana Exploradora de Guatemala, S.A., 2005-2009), los cuales no son muy adecuados para realizar estimaciones de costos como las mediciones de campo efectivas y planos de ingeniería detallados. Además, algunas dimensiones fueron tomadas de un mapa de un informe gubernamental (Comisión Gubernamental para Analizar el Fenómeno de Agrietamiento de Paredes en Algunas Casas Adyacentes al Proyecto Minero Marlin I, 2010). La mayor incertidumbre está en el costo futuro del tratamiento de agua tóxica en las colas y posiblemente de efluentes con metales tóxicos y ácidos producto de los trabajos de la mina y de roca estéril de mina descargada en la superficie. Otra estimación de costos de recuperación es de $13.06 millones (On Common Ground, 2010, p.13). La empresa MWH Consulting preparó esa estimación de costos para Goldcorp en mayo del 2009. Una revisión profesional e independiente concluye que la estimación de costos es baja, el período de cierre es corto y que no hay fianza de garantia para asegurar la recuperación (On Common Ground, 2010, p. 12-14). Otros profesionales expertos en riesgo de minas han señalado que la fianza de garantia de US$1 millon es muy baja (ETech, 2010) Aparte de su resumen en la revisión mencionada, la estimación de 27 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- costos de MWH Consulting no está disponible al público y no ha pasado la prueba de escrutinio público. Tampoco la estimación no ha sido analizada ni evaluada por una autoridad capacitada e independiente. Sería muy útil revisar la estimación de costos de MWH Consulting con atención especial a los métodos y presunciones utilizadas. 28 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- REQUERIMIENTOS PARA EL PLAN DE RECUPERACIÓN Se ha informado que existe un plan de recuperación por parte de la mina Marlin (On Common Ground, 2010, p. 13); sin embargo, no está disponible al público. Si se hiciera público, las tareas y los costos de recuperación podrían ser comparados con esta estimación, para corrobar si ese plan está o no está completo y si sus estimaciones de costos son aceptables o no. Se supone que los autores de dicho plan tuvieron mejor acceso a la información de Marlin. O, los datos de entrada para esta estimación de costos pueden ser ajustados según sea apropiado. De hacer esto, debe tenerse mucho cuidado de aceptar solamente información, que sea más precisa, y que haya sido certificada independientemente por una autoridad reconocida. En el diseño de planes de ingeniería existen varios niveles de detalle posible, incluyendo en complejidad cada vez mayor: 1) magnitud de orden, 2) conceptual, 3) diseño, y 4) construcción. Un plan de recuperación de una mina debiera estar al nivel más alto de construcción, siendo este, el nivel más detallado. Esto significa proporcionar criterios de ejecución, especificaciones, restricciones, cantidades y planos de ingeniería con detalles suficientes para la construcción. Las alteraciones actuales y las alteraciones finales planificadas a la tierra en Marlin debieran ser mostradas en una escala mayor que 1:200, y estos planos debieran ser actualizados cada vez que se den cambios. Los planes de movimientos de tierra debieran ser mostradas en la misma escala y los detalles en estos planes, como zanjas, pozas, cercos, etcétera, debieran ser mostrados en una escala adecuada para la construcción. Para los varios edificios e instalaciones de procesamiento, los planos de construcción originales, actualizados con alguna modificación posterior, son adecuados. Además, es vital que el plan de recuperación tenga informes detallados sobre los varios recursos naturales, incluyendo agua subterránea y superficial, geología y mineralogía, suelos, fauna y vegetación. Estos informes deben describir el estado de los recursos previo a empezar la minería, cómo la minería impactará a estos recursos y medidas de mitigación para prevenir su degradación. Para cualquier posible efluente de proyecto, los informes deben demostrar sus fuentes, rutas de liberación y todos los posibles receptores ambientales y humanos. Los informes deben incluir mapas de los recursos; muestreo y datos analíticos; densidad poblacional y estadísticas de distribución. Lo más importante, el plan de recuperación de la mina debe incluir planes de manejo para proteger los recursos y mitigar los impactos del proyecto. Para tener un ejemplo de los requerimientos de un plan de recuperación de una mina, se pueden ver las reglas y regulaciones del estado de Colorado, EE.UU. en la siguiente página web: http://mining.state.co.us/Rules%20and%20Regs.htm 29 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Esta página web también tiene los planes de recuperación para minas en Colorado. Por ejemplo, la mina de oro de San Luis era de tamaño similar a la mina Marlín, con una producción diaria de mena de 5,000 toneladas y una vida de 10 años. El plan de recuperación es de cerca de 700 páginas en forma de 17 documentos como pruebas y tres anexos. El archivo incluye otros 170 documentos de audiencias públicas, revisiones y correspondencia sobre el plan de recuperación. Después de haber presentado el plan original, alrededor de 1,790 revisiones se registraron en el mismo, durante la vida de la mina. La administración del plan de recuperación por parte del estado se informa en 55 documentos sobre la fianza de recuperación, 120 inspecciones y 471 documentos de aplicación de la ley (Colorado Division of Reclamation, Mining & Safety, 2010). Existen varias referencias internacionales o puntos de partida que podrían ayudar a los reguladores guatemaltecos a desarrollar un programa de recuperación de minas. El Grupo del Banco Mundial tiene información sobre directrices de minería, cierre de minas y fianzas de garantía (International Finance Corporation, 2007) (Sasson, 2009) (Sheldon, et al, 2002). Uno de los contratistas de ingeniería de Montana, SPK Consulting, publicó un documento llamado “Overview of International Mine Closure Guidelines” (Perspectiva general de directrices internacionales para cerrar una mina) (Garcia, 2008).En Marlin las colas son uno de los principales temas de recuperación. El sitio web siguiente tiene información técnica y directrices sobre colas. www.tailings.info/guidelines.htm Un recurso técnico muy respetado, es el programa canadiense Mine Environment Neutral Drainage, el cual se puede encontrar en http://www.nrcan.gc.ca/mms-smm/tect-tech/sat-set/med-ndd-eng.htm Los reguladores guatemaltecos debieran ser diligentes en exigir un plan de recuperación comprensivo para Marlin y debieran ser diligentes en hacer que el mismo se cumpla. Goldcorp no tiene un muy buen récord de protección ambiental en muchas de sus minas, como se demuestra a continuación: · · · · · Alumbrera, Argentina: derrame de pulpa en tubería; liberación de transporte de nitrato de amonio; liberación de arsénico, cadmio, cobre, mercurio y estroncio. Red Lake, Canadá: liberación de colas en el canal Bruce de Red Lake, la cual requirió de cerrar por dos días la cercana planta municipal de tratamiento de agua; se encuentra dentro de los 12 mayores emisores de arsénico de toda Canadá. Musselwhite, Canadá: liberación de cianuro. EquitySilver, Canadá: drenaje ácido de roca. La Coipa, Chile: liberación de mercurio y cianuro. 30 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin · · · · · - UUSC - COPAE- Pueblo Viejo, República Dominicana: drenaje ácido de roca. San Martín, Honduras: reducción de recursos de agua; liberación de arsénico, cianuro, cobre, hierro y plomo. Nukay, México: liberación de colas. Marigold, EE.UU.: contaminación de aguas subterráneas por arsénico; liberaciones de mercurio. Wharf, EE.UU.: liberación de cianuro, nitrato y selenio. (MiningWatch Canada, 2007) Si no se cuenta con vigilancia por parte del gobierno de Guatemala, las municipalidades de San Miguel Ixtahuacán y Sipacapa, así como la población local, la mina Marlin tiene el potencial de dejar un legado sumamente costoso así como una fuente de continuos problemas ambientales durante muchos años futuros. 31 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- CONCLUSIONES Desde múltiples puntos de vista, la actual fianza de recuperación de $1 millón que tiene Marlin, es insignificante. · · · · La estimación de costos en este informe indica que los costos de recuperación en el caso de que Montana esté en incumplimiento pueden ser de hasta Q389 millones o $49 millones. Existe una alta probabilidad que efluentes contaminados del sitio requieran tratamiento de agua por tiempo indefinido (E-Tech, 2010). El total mencionado anteriormente incluye suficientes fondos para una cuenta en custodia de Q97 millones o $12 millones para financiar el tratamiento. Las fianzas de recuperación de otras minas modernas en otros lugares, son del mismo orden de magnitud que el monto estimado en este documento. Un informe no publicado, preparado para Montana estima los costos de recuperación en $13.06 millones. Aún así, otro experto en minas, quien ha revisado la estimación de $13.06 millones, concluyó que es inadecuada (OnCommonGround, 2010). Al no contar con una fianza de recuperación adecuada, Guatemala se encuentra expuesta a altos riesgos ambientales y a la salud pública, en el caso de que Montana no cumpla con su responsabilidad de recuperar la mina Marlin adecuadamente. Tal incumplimiento por Montana podría ser un resultado de bancarrota, cierre forzado de forma planificada o no planificada, y climas extremos o eventos sísmicos. Un plan de recuperación que no está disponible al público, como el cual se informa que tiene Marlin, es igual de serio (On Common Ground, 2010). Despierta dudas sobre la sinceridad de la empresa minera y los reguladores. A nivel mundial estos documentos están obligados a ser públicos. El público puede ser un recurso valioso en asegurar que los proyectos industriales sean conducidos de una manera apropiada. El paisaje mundial está lleno de minas que impactan adversamente la salud pública y el ambiente. Muchas de estas son minas históricas, pero también hay empresas mineras modernas que son irresponsables y continúan causando desastres ambientales tal como se aprecia en la corta lista mencionada en la sección de Riesgos Ambientales de la Minería. Muchos de estos desastres son monumentales debido a que la minería moderna se desarrolla a escala masiva. Algunos de estos desastres requieren de cientos de millones o más de mil millones de dólares en fondos del gobierno para limpiar el sitio y a pesar de estas limpiezas costosas, muchos de los daños son perpetuos. Como se mencionó anteriormente Goldcorp tiene una historia de problemas ambientales en muchas de sus minas. De no aplicarse requerimientos comprensivos de 33 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- recuperación, la mina Marlin puede llegar a convertirse en un desastre ambiental significativo. Sería el mejor interés de Goldcorp mejorar su reputación ambiental ante gobiernos y ciudadanos y llevar a cabo una recuperación ejemplar en la mina Marlin. 34 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- OBRAS CITADAS Aventurine Engineering, Inc. (2010). Accessed 28 September 2010 at Sherpa: www.aventurineengineering.com/index.html Colorado Division of Reclamation, Mining & Safety (2010). Retrieved 3 October 2010 from http://mining.state.co.us/operatordb/criteria.asp?search=minename Comisión Gubernamental para Analizar el Fenómeno de Agrietamiento de Paredes en Algunas Casas Adyacentes al Proyecto Minero Marlin I (2010). Informe final No. GI-001-2010 An. D 100115 CONJUNTO MARLIN(1). Guatemala City. E-Tech International (2010) Evaluation of predicted and actual water quality conditions at the Marlin Mine. Guatemala Garcia, D. H. (2008). Overview of International Mine Closure Guidelines (trad.: Perspectiva general de directrices internacionales para cerrar una mina). 2008 Meeting of American Institute of Professional Geologists, Flagstaff, Arizona, 20-24 September 2008. Goldcorp, Inc. (2010). Marlin Drill Hole Data (trad.: Información de la perforación Marlin).Vancouver: Accessed 16 July 2010 atwww.goldcorp.com/operations/marlin/reports Howell, C., & Christopherson, D. (2009). Three-phase mining effluent treatment plant to meet stringent standards(trad.: Planta de tratamiento de tres fases para los efluentes de minería a cumplir estandares rigurosos). Enginering and Mining Journal, April 2009, p. 48. International Finance Corporation (2007). Environmental, Health, and Safety Guidelines MINING (trad.: Directrices mineras de ambiente, salud y seguridad). World Bank Group, Washington, D.C., 10 December 2007. Kuyucak, N. Lime Neutralization Treatment Plant Cost Estimate (trad.: Estimación de costos de la planta de tratamiento de neutralización de cal). Golder Associates Ltd., Ontario. Mining Watch Canada (2007). Goldcorp Analysis(trad.: Análisis de Goldcorp). Retrieved 1 October 2010 from www.miningwatch.ca Ministerio de Ambiente y Recursos Naturales (2007). Informe de inspección Minero Marlin 1. Guatemala City. 35 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Montana Exploradora de Guatemala, S. A. (2006). Estudio de evaluación de impacto ambiental del proyecto La Hamaca. Guatemala City. Montana Exploradora de Guatemala, S. A. (2003). Estudio de evaluación de impacto ambiental y social proyecto minero Marlin. Guatemala City. Montana Exploradora de Guatemala, S. A. (2010). Annual Monitoring Report 2009 (trad.: Informe Anual de Monitoreo 2009). Guatemala City. Montana Exploradora de Guatemala, S. A. (2008). Annual Monitoring Report 2007 (trad.: Informe Anual de Monitoreo 2007). Guatemala City. Montana Exploradora de Guatemala, S. A. (2007). Annual Monitoring Report 2006 (trad.: Informe Anual de Monitoreo 2006). Guatemala City. Nevada Division of Environmental Protection. (2010). Standardized reclamation cost estimator (trad.: Estimador de costos para recuperación estandarizada). Bureau of Mining Regulation and Reclamation. Reno.Retrieved 1 July 2010 from http://www.nvbond.org/index.htm On Common Ground (2010). Human Rights Assessment Appendix H External Environmental Review (trad.: Evaluación de Derechos Humanos, Anexo H Resumen Ambiental Externo).Vancouver: Goldcorp, Inc. Robertson, A. M. (2009). Dam inspection - November 2009 (trad.: Inspección del dique-noviembre del 2009). Guatemala City: Montana Exploradora de Guatemala, S. A. RS Means Company, Inc. (1999). Building Construction Cost Data (trad.: Información de costos de la construcción de edificios). Kingston, MA: RS Means Company, Inc. Sasson, M. (2009). Guide lines for the Implementation of Financial Surety for Mine Closure (trad.: Directrices para la implementación de fianzas de garantía para el cierre de una mina). World Bank, Oil, Gas, and Mining Policy Division, Extractive Industries for Development Series #7, Washington, D. C., June 2009. Sheldon, C. G., J. E. Strongman, M. Weber-Fahr, N. Mekharat, M. Tall (2002). Global MiningIt’s Not Over WhenIt’s Over: Mine Closure Aroundthe World (trad.: La minería global no ha terminado cuando ha terminado: el cierre de minas alrededor del mundo). World Bank Group’s MiningDepartment, Washington, D.C., 2002. 36 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin - UUSC - COPAE- Skousen, J., Hilton, H., & Faulkner, B. (2010). Overview of acid mine drainage treatment with chemicals (trad.: Perspectiva general del tratamiento de drenaje ácido de minas con químicos). Accessed 1September 2010 athttp://anr.ext.wvu.edu/r/download/44896. Morgantown, WV, USA. Skousen, J., & McDonald, L. (2005). Land Reclamation (trad.: La recuperación de tierra). Accessed 5 September 2010 athttp://anr.est.wvu.edu/r/download/45307 . United States Air Force & US Environmental Protection Agency (2008). Federal Remediation Technologies Roundtable (trad.: Mesa Federal de Tecnologías para Remediación). Accessed 28September 2010 from www.frtr.gov/ec2/ecracersystm.htm United States Bureau of Mines.Bureau of Mines Cost Estimating System Handbook (trad.: Departamento de Minas Manual de Sistema para Estimar Costos). Washington, D.C.: United States Department of the Interior, Information Circular 9142-9143. United States Environmental Protection Agency (1997). Damage cases and environmental releases from mines and mineral processing sites (trad.: Casos de daño y descargas ambientales de minas y sitios mineros de procesamiento). Washington, D.C. United States Environmental Protection Agency (1989). Technical Guidance Document: Final Covers on Hazardous Waste Landfills and Surface Impoundments (trad.: Documento de Orientación Técnica: Tapas finales para Vertederos de Desechos Peligrosos y Embalses de la Superficie). Washington, D.C.: EPA/530-SW-89-047. 37 Asuntos de recuperación y costos aproximados para la recuperación de la mina marlin ASUNTOS DE RECUPERACIÓN En la Mina Marlin ANEXO ESTIMACIÓN DE COSTOS DE LA RECUPERACIÓN 39 - UUSC - COPAE- STANDARDIZED RECLAMATION COST ESTIMATOR Version 1.1.2 (updated 03 February, 2008) NOT APPROVED FOR USE IN NEVADA COST DATA FILE INFORMATION File Name: Marlin Rec Cst 2010 12 01.xls Cost Data File: cost_data-std-nv2009-1.xls Cost Data Date: August 1, 2009 Cost Data Basis: Standardized Data Author/Source: Nevada Division of Environmental Protection (NDEP) & NV BLM PROJECT INFORMATION Project Name: Marlin Date of Submittal: 1 July 2010 Select One: Notice Notice or or Sm Sm Exploration Exploration Plan Plan Select One: Private Private Land Land Lg Lg Exploration Exploration Plan Plan Mine Mine Plan Plan of of Operations Operations Public Public or or Public/Private Public/Private Cost Basis Category: Northern Northern Nevada Nevada Cost Basis Description: Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Counties This version has been validated and verified by the NDEP and BLM for use in Nevada as of 04 February 2008. Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Page 1 of 1 Project Name: Marlin Project Date: 1 July 2010 Marlin Rec Cst 2010 12 01.xls Reclamation Plan Table of Contents Cost Summary Exploration Exploration Roads & Pads Waste Rock Dumps Heap Leach Pads Tailings Roads Pits Underground Openings Foundations and Buildings Other Demo & Equipment Removal Sediment & Drainage Control Process Ponds Landfills Yards, Etc. Waste Disposal Misc. Costs Monitoring Construction Management Labor Costs Equipment Costs Material Costs Misc. Unit Costs Fleets (Crews) Productivity Seed Mixture # Page 1 of 1 NEVADA STANDARDIZED RECLAMATION BOND CALCULATION - SUMMARY Project Name: Marlin Project Date: 1 July 2010 Model Version: Version 1.1.2 (updated 03 February, 2008) File Name: Marlin Rec Cst 2010 12 01.xls A. Earthwork/Recontouring Labor (1) Exploration Exploration Roads & Drill Pads Roads Well Abandonment* Pits Underground Openings Process Ponds Heaps Waste Rock Dumps Landfills Tailings Foundation & Buildings Areas Yards, Etc. Drainage & Sediment Control Other** Subtotal Mob/Demob* Subtotal "A" B. Revegetation/Stabilization $14,555,357 $112,407 $20,160,798 $0 $112,407 $20,160,798 Labor (1) $1,894 $15,682 $780 $670 $5,275 $6,037 $234 $23,876 $2,870 $8,003 $2,862 $5,187 $201 $20,509 $2,466 $6,874 $2,461 $42,928 $1,664 $169,733 $13,032 $56,892 $19,854 $51,539 $44,273 $358,269 Equipment (2) Materials $0 $3,973 $37,918 N/A $19,782 N/A $6,725 $0 $54,152 $2,099 $214,118 $18,368 $71,769 $25,177 $0 $454,081 Total $0 $0 N/A $9,196 $33,250 $0 $0 $91,245 $250,000 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $100,441 $283,250 $0 $341,245 $383,691 (1) Equipment (2) Total $73,622 $520,581 $7,258,755 $3,655,743 $1,354,203 Labor (1) $710,141 $4,500 $414,920 $8,450 $22,400 $105,300 Materials $2,325,798 $64,234 Equipment (2) $0 $0 $0 $760,000 Materials $1,583,114 $9,000 $539,396 $29,300 $872,600 $365,400 $635,000 $58,500 $7,414,201 $762,190 $0 $12,268,701 Total $594,234 $267,286 $50,218 $68,726 $172,355 $366,600 $816,807 $702,612 $861,520 $118,944 $538,955 $1,519,419 Labor Construction Management Construction Support Road Maintenance Other** Subtotal A through F $2,206 $872,973 $4,500 $124,476 $20,850 $90,200 $260,100 $635,000 $58,500 $5,014,781 $177,375 Subtotal "E" G. Operational & Maintenance Costs Total $0 $3,150 $30,059 Labor Reclamation Monitoring and Maintenance Ground and Surface Water Monitoring Subtotal "F" Materials $0 $380 $3,631 $42,446 Foundation & Buildings Areas Other Demolition Equipment Removal Fence Removal Fence Installation Pipe & Culvert Removal Powerline Removal Transformer Removal Rip-rap, rock lining, gabions Other Misc. Costs Other** F. Construction Management & Support Equipment (2) $0 $443 $4,228 Labor (1) Subtotal "C" E. Monitoring $1,052,324 $60,752 $939,983 $0 $4,069 $17,068 $291,844 $0 $7,546,879 $53,682 $8,753,304 $290,070 $998,838 $151,985 $0 $14,555,357 Process Ponds/Sludge* Heaps* Dumps (Waste & Landfill)* Tailings* Surplus Water Disposal* Monitoring* Miscellaneous* Solid Waste - On Site Solid Waste - Off Site Hazardous Materials Hydrocarbon Contaminated Soils Other** Hazmat Incinerator Subtotal "D" Total $92,558 $0 $0 $0 N/A $4,603 $0 $0 $0 $0 $0 $0 $0 $15,246 $5,493,035 Subtotal "B" D. Structure, Equipment and Facility Removal Materials $689,665 $42,445 $687,057 $0 $2,645 $4,174 $183,054 $0 $5,637,391 $38,069 $6,294,839 $204,651 $697,883 $73,484 $5,493,035 Exploration Exploration Roads & Drill Pads Roads Well Abandonment Pits Underground Openings Process Ponds Heaps Waste Rock Dumps Landfills Tailings Foundation & Buildings Areas Yards, Etc. Drainage & Sediment Control Other** C. Detoxification/Water Treatment/Disposal of Wastes** Equipment (2) $270,101 $18,307 $252,926 $0 $1,424 $8,292 $108,790 $0 $1,909,488 $15,613 $2,458,465 $85,419 $300,955 $63,255 Equipment (2) Materials Total $1,775,232 $0 $224,100 $499,392 $356,609 $423,727 N/A $0 $7,500 $2,274,624 $356,609 $655,327 $0 $1,999,332 $1,279,728 $7,500 $3,286,560 Labor (1) $15,706,627 Equipment (2) $19,654,045 Materials (3) $2,712,579 Total $38,073,250 * Costs estimated outside of standardized model - additional documentation required. ** Other Operator supplied costs - additional documentation required. Marlin Rec Cst 2010 12 01.xls Page 1 of 2 1/17/2011 NEVADA STANDARDIZED RECLAMATION BOND CALCULATION - SUMMARY Project Name: Marlin Project Date: 1 July 2010 Model Version: Version 1.1.2 (updated 03 February, 2008) File Name: Marlin Rec Cst 2010 12 01.xls Indirect Costs Include? 1. Engineering, Design and Construction (ED&C) Plan (7) 2. Contingency (8) 3. Insurance (9) 4. Performance Bond (10) 5. Contractor Profit (11) 6. Contract Administration (12) 7. BLM Indirect Cost (13) Total $1,522,930 $2,284,395 $235,599 $1,142,198 $3,807,325 $2,284,395 N/A $235,599 Subtotal Add-On Costs $11,276,842 $49,350,092 Grand Total Administrative Cost Rates (%) Cost Ranges for Indirect Cost Percentages 1. Engineering, Design and Construction (ED&C) Plan (7) Variable Rate 2. Contingency (8) Variable Rate 3. Insurance (9) 4. Bond (10) 5. Contractor Profit (11) 6. Contract Administration (12) Variable Rate 7. BLM Indirect Cost (13) <= <= <= $1,000,000 $25,000,000 8% 6% <= <= <= $500,000 $5,000,000 $50,000,000 10% 8% 6% 1.5% of labor costs 3.0% of the O&M costs if O&M costs are >$100,000 10% of the O&M costs <= <= <= $1,000,000 $25,000,000 10% 8% > $25,000,000 4% > $50,000,000 4% Notice Level 0% Notice Level 0% > $25,000,000 6% 21% of Contract Administration RECLAMATION COST ESTIMATION SUMMARY SHEET FOOTNOTES 1. Federal construction contracts require Davis-Bacon wage rates for contracts over $2,000. Wage rate estimates may include base pay, payroll loading, overhead and profit. To avoid double counting of any of the identified administrative costs the operator must itemize the components of their labor cost estimates or provide BLM with a signed statement, under penalty of USC 1001, that identifies what specific administrative costs are included in the quoted hourly rate. 2. The reclamation cost estimate must include the estimated plugging cost of at least one drill hole for each active drill rig in the project area. Where the submitted Notice or approved Plan of Operations calls for drill holes to be plugged, but doesn’t specifically require the drill holes be plugged before the drill rig has been moved from the drill pad, the reclamation cost estimate must include the plugging cost for those drill holes. For all drill holes and wells scheduled to be left open, the estimated plugging cost must be included in the reclamation cost estimate. Where the approved Plan of Operations proposes immediate mining through an area where the drilling is to occur, and the cost of the post-mining reclamation is included in the reclamation cost estimate, the cost estimate does not need to include the plugging costs for those drill holes. 3. Miscellaneous items should be itemized on accompanying worksheets. 4. Fluid management should be calculated only when mineral processing activities are involved. Fluid management represents the costs of maintaining proper fluid management to prevent overflow of solution ponds through premature cessation or abandonment of operations. Calculate a minimum six month direct cost estimate which includes power, supplies, equipment, labor and maintenance. 5. Handling of hazardous materials includes the cost of decontaminating, neutralizing, disposing, treating and/or isolating all hazardous materials used, produced, or stored on the site. 6. Any mitigation measures required in the Plan of Operations must be included in the reclamation cost estimate. Mitigation may include measures to avoid, minimize, rectify and reduce or eliminate the impact, or compensate for the impact. 7. Engineering, design and construction (ED&C) plans are often necessary to provide details on the reclamation needed to contract for the required work. To estimate the cost to develop an ED&C plan use 4-8% of the O&M cost. Calculate the ED&C cost as a percentage of the O&M cost as follows: up to and including $1 million, use 8%; over $1 million to $25 million, use 6%; and over $25 million, use 4%. Inclusion of a line item for the development of an ED&C plan may not be necessary for small operations, such as notice-level exploration. With small, uncomplicated reclamation efforts contracting may be able to proceed without developing an ED&C plan. [ED&C is automatically eliminated if "Notice" is selected on the Property Information Sheet] 8. A contingency cost is included in the reclamation cost estimation to cover unforeseen cost elements. Calculate the contingency cost as a percentage of the O&M cost as follows: up to and including $500,000, use 10%; over $500,000 to $5 million, use 8%; over $5 million to $50 million, use 6%; and greater than $50 million, use 4%. As with the ED&C cost, inclusion of a contingency cost may not be necessary for small operations, such as notice-level exploration. 9. Insurance premiums are calculated at 1.5% of the total labor costs. Enter the premium amount if liability insurance is not included in the itemized unit costs. 10. Federal construction contracts exceeding $100,000 require both a performance and a payment bond (Miller Act, 40 USC 270et seq.). Each bond premium is figured at 1.5% of the O&M cost. Enter the sum of both premium costs on this line. 11. For Federal construction contracts, use 10% of estimated O&M cost for the contractor’s profit. 12. To estimate the contract administration cost, use 6 to 10% of the operational and maintenance (O&M) cost. Calculate the contract administration cost as a percentage of the O&M cost as follows: up to and including $1 million, use 10%; over $1 million to $25 million, use 8%; and greater than $25 million use 6%. 13. BLM’s indirect cost rate is 21% of BLM’s contract administration costs. Marlin Rec Cst 2010 12 01.xls Page 2 of 2 1/17/2011 $689,665 $0 $689,665 $270,101 $0 $270,101 1 2 3 Diameter in 2.98 2.98 3.98 12.25 12.25 9 9 Trench Length ft Trench Bottom Width ft Trench Depth ft Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Marlin Exploration Drill Holes, 2 La Hamaca Exploration Drill Holes, 3 West Vero Exploration Drill Holes, 2 Description 0.05 0.05 0.09 Vol/foot of depth ft3 Grout Grout Grout Hole Plugging (1) Material $1,052,324 $0 $1,052,324 $0 $0 $1,052,324 Totals Casing to Remove ft 30 30 30 1110 950 300 460 2.9 2.9 2.9 Total Drillhole Abandon. (6,7) Hours hrs (select) Backfill Material Page 1 of 3 cy cy cy 0.02 0.02 0.04 Total Top Seal (3,4) Volume Additional Hrs for Walk-in (1) Total Cuttings Volume degrees Trench Sideslope Angle Total Grout (2) Volume 1.57 1.94 5.44 Average Depth of Hole(1) ft bgs 690 850 1,317 1,115 960 310 820 $30,998 $1,575 $1,931 Casing Removal Labor (5) Cost $ (select) Cut Material Type Backfill Depth to Water ft bgs 20 20 20 750 246 280 480 $79,149 $4,022 $4,931 Casing Removal Equipment Cost $ (select) Backfilling Fleet Grout + Backfill Grout + Backfill Grout + Backfill Grout + Backfill Grout + Backfill Grout + Backfill Grout + Backfill Hole Plug Method (select) Exploration hole surface seal thickness: Minimum seal above groundwater table: Bond Calculation Exploration 5. MEG 2010 Att. D and MEG 2008 Fig. 8 610 31 38 1 1 5 7 Max Holes Open at One Time Hole Plugging Trench Parameters 610 31 38 1 1 5 7 Total Number of Holes 1. Include one-way hours necessary to walk equipment in from drop-off point to work area Description (required) Exploration Drillhole Abandonment 1 -1 Hole Type (select) Core Core Core Rotary Rotary Rotary Rotary Notes: 1. If core holes are pre-drilled, use length of hole below pre-drilled length 4. MEG 2010 p. 59 2. Goldcorp 2010 3. MEG 2006 Marlin Exploration Drill Holes, 2 La Hamaca Exploration Drill Holes, 3 West Vero Exploration Drill Holes, 2 Water Supply Well PSA-1, 4 Water Supply Well PSA-2, 4 PW Monitoring Wells, 5 MW Monitoring Wells, 5 Description Exploration Trenches - User Input 1 2 3 4 5 6 7 -1 $0 $92,558 $92,558 $92,558 Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $689,665 Equipment $270,101 Labor Exploration Drillhole Abandonment - User Input User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Color Code Key Hole Abandonment Costs Trench Backfilling Costs Subtotal Earthworks Trench Revegetation Costs Subtotal Revegetation TOTALS Exploration - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $193,736 $9,846 $12,069 Plugging Labor Cost $ (select) Seed Mix $494,680 $25,139 $30,816 Plugging Equipment Cost $ (select) Mulch Revegetation 20.0 ft 50.0 ft $62,825 $3,945 $13,561 Plugging Material Cost $ (select) Fertilizer $3,563 $181 $444 Top Seal Material (2,3) Cost $ < In Nevada use 10' < In Nevada use 50' Exploration $864,951 $44,708 $63,752 Total (6,7) Cost $ 0.82 0.82 0.44 0.44 Grout + Cuttings Grout + Cuttings Grout + Cuttings Grout + Cuttings a # b! "d 2 Exploration Trench Volume Calculation 20.96 5.65 3.59 6.84 37.04 0.38 0.38 0.20 0.20 1.24 25.9 22.0 8.8 12.3 77.7 $1,766 $1,512 $2,414 $5,158 $45,354 $4,509 $3,860 $6,163 $13,170 $115,804 $1,334 $1,092 $2,223 $4,447 $224,747 LCY (BCY+30%) Trench Backfill Volume Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Description (required) Surface Area Exploration Trenches - Revegetation Costs Description (required) Revegetation Labor Cost Dozer Push Distance ft Revegetation Equipment Cost Equipment Productivity yd3/hr Revgetation Material Cost Dozing Material Backfilling Fleet Page 2 of 3 Total Revegetation Cost Density Correction $3,406 $2,790 $5,677 $11,353 $573,861 $1,033 $1,902 $535 $3,646 $87,447 Revegetation: Corrected Hourly Productivity yd3/hr $111 $111 $292 $409 $5,111 $12,159 $11,267 $17,304 $38,183 $1,052,324 Trench Backfill Labor Cost $ Total Dozer Hours hr $ Trench Backfill Equipment Cost $ Total Trench Backfill Cost Exploration 10 ft (3 m) added to trench width to account for revegetation under spoil pile Dozing: Dozing distance = 1/2 trench length or 400 ft (max push) whichever is less Assumes flat push (grade correction factor = 1) Dozing & Ripping/Scarifying Calculations Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) Exploration Trenches - Backfill/Regrading Costs 1 15.75 29.00 1.63 7.94 63.27 Bond Calculation Exploration 1. Assumes grout backfill from bottom of hole to 50' (15.24m) above static water level, up to distance from top of hole as set above. 2. Assumes 25% loss to formation for grout backfill 3. If "Top Plug" hole plug method is used, assumes physical plug installed without backfill, grout or cement. Not available option for Nevada projects 4. Assumes top 10' (3 m) of hole is plugged with cement if "Grout Only", "Backfill + Grout", or "Cement Plug" hole plug method are chosen. 5. Assumes that a) casing is not cemented entire length, b) does not include temporary surface casing 6. Assumes minimum 1 hr per hole for abandonment (excluding move-to and casing removal) 7. Assumes fixed hours per hole for setup & tear-down and moving between holes (see Productivty Sheet) per drill hole (includes rig time if grouting required, labor crew only if cuttings backfill only) Notes: Water Supply Well PSA-1, 4 Water Supply Well PSA-2, 4 PW Monitoring Wells, 5 MW Monitoring Wells, 5 Exploration Trenches - Calculations 4 5 6 7 Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 1 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 acres Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $ $ $ $ Page 3 of 3 Bond Calculation Exploration Exploration -1 % grade 20.0 20.0 Underlying Ground Slope $4,086 $55,707 $959 $60,752 $3,973 $64,725 Totals 1.3 1.3 Ungraded Slope _ H:1V degrees 45 45 Cut Slope 10,000 4,000 Road + Drill Pad Length ft 12 12 Road Width ft Physical 31 2 Number of Drill Pads (1) 20 20 Individual Sump Volume cy You must fill in ALL green cells and relevant blue cells in this section for each road Maximum grade allowed for dozer: Maximum grade allowed for grader: Original slope cutoff to include extra sump volume: 1 1 Regrade Material (select) Alluvium Alluvium Cut Material Type (select) Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Will not allow dozer for slopes greater than 30% For dozer regrading push distance = road width Regrading Volume and Footprint Volume Figure 1 - Regrading Volume Calculation Sm Excavator Sm Excavator Recontouring Equipment Fleet (select) Grading 1 0 (select) for Walk-in (1) Additional Hrs Alluvium Alluvium Cover Material Type (select) 1 0 Page 1 of 3 Small Truck Small Truck (1) Seed Mix (select) Mulch (select) Mix 1 Mix 1 Straw Mulch Straw Mulch Chemical Chemical Fertilizer (select) (select) for Walk-in Revegetation 30 30 Drill Pad Length ft Yes Yes Scarifying/ Ripping? (select) Slope Replacement Percent % Ripping Fleet (select) Small Dozer Small Dozer Disturbed Area (if calculated elsewhere) acres User Overrides Regrade Volume (if calculated elsewhere) cy < In Nevada use 10' < In Nevada use 30' Cover Additional Hrs 33 10 Drill Pad Width ft 10.0 % 10.0 % 30.0 % Cover Placement Equipment Fleet (select) You must fill in ALL green cells and relevant blue cells in this section for each road 1. Include one-way hours necessary to walk equipment in from drop-off point to work area La Hamaca Water Supply Well Access & Pad, 3 Description (required) Exploration Roads & Pads - Calculations 1 2 3 ID Code $3,150 $3,150 N/A N/A N/A Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $2,066 $40,043 $336 $42,445 $380 $42,825 Equipment 1. All Physical parameters must be input even if manual overrides for volume or area are used. 2. Sump volume will be applied to all roads on slopes less than show above. On slopes great than shown above pad width (i.e. cut volume) should be adequate to account for sump volume. 3. Comision 2010 La Hamaca Water Supply Well Access & Pad, 3 Exploration Roads & Pads - User Input (cont.) 1 2 3 Facility Description Description (required) $2,020 $15,664 $623 $18,307 $443 $18,750 Labor User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value TOTALS Subtotal Earthworks Exploration Roads & Pads - User Input Color Code Key Revegetation Cost Grading Costs Cover Placement Cost Ripping Cost Exploration Roads & Pads - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Expl. Roads & Pads 12 12 Growth Media Thickness in 30,000 34,000 Distance to Growth Media Stockpile ft -6 -6 Slope from Road to Stockpile % grade Expl. Roads & Pads Growth Media 1 2 3 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 La Hamaca Water Supply Well Access & Pad, 3 Description (required) Exploration Roads & Pads - Regrading Costs Inputting Exploration Roads and Drill Pads Minimum of 1 acre crew time per area Revegetation Calculations 930 60 990 13,010 Total Drill Pad Length ft 9,070 3,940 Total Road Length ft 4,472 3,676 796 Regrading Volume cy Minimum 1 hr ripping/scarifying time per area Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Road length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) For dozer regrading assumes push distance = 3 x road width Ripping/Scarifying Calculations Assumes dozer push is uphill Assumes minimum push distance of 100 ft Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Sm Excavator Sm Excavator Recontouring Fleet 139 139 Equipment Productivity cy/hr 34.1 28.4 5.7 $1,721 $345 $2,066 $2,020 Total Equipment Cost $ $1,682 $338 Total Labor Cost $ Page 2 of 3 Total Equipment (1) Hours hr Bond Calculation Expl. Roads & Pads $4,086 $3,403 $683 Total Regrading Cost $ Expl. Roads & Pads La Hamaca Water Supply Well Access & Pad, 3 9,255 6,891 2,364 Growth Media Volume cy 1 2 3 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 La Hamaca Water Supply Well Access & Pad, 3 Description (required) 4.3 1.5 5.8 4.23 1.45 5.68 Surface Area acres Ripping Hours hrs Small Truck Small Truck Growth Media Replacement Fleet Exploration Roads & Pads - Scarifying/Revegetation Costs 0 1 2 3 Description (required) Exploration Roads & Pads - Growth Media Costs (1) Includes walk-in time based on distance and travel speed (see Productivity sheet for speeds) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $249 $87 $336 $623 $ $ $462 $161 Ripping Labor Costs 16 17 Number of Trucks/ Scrapers Ripping Equipment Cost 576 544 Fleet Productivity LCY/hr $ $959 $711 $248 Total Ripping Costs $ $ $380 $283 $97 Revegetation Equipment Cost Page 3 of 3 $443 $330 $113 Revegetation Labor Cost $3,150 $ $2,346 $804 Revgetation Material Cost $55,707 $40,043 $15,664 18.3 $ $42,082 $13,625 $ $30,248 $9,795 $ Total Growth Media Cost $11,834 $3,830 Total Equipment Cost Total Labor Cost 14.0 4.3 Total Fleet Hours Bond Calculation Expl. Roads & Pads $3,973 $ $2,959 $1,014 Total Revegetation Cost Expl. Roads & Pads -1 1 2 3 4 5 ft 4,921 0 7,200 4,480 2,500 Berm Length 1 1 1 1 1 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 $30,059 $30,059 N/A N/A N/A Materials $470,726 $460,195 $9,062 $939,983 $37,918 $977,901 Totals % grade 30.0 30.0 30.0 20.0 20.0 Underlying Ground Slope Berm Height ft 4 0 8 8 8 Berm Base Width ft 1.0 0.0 1.3 1.3 1.3 Berm Sideslope Angle _H:1V 1 1 1 1 1 Number of Berms (2) (1 or 2 sides) ft 33 146 80 80 80 Road Width ft 4,921 2,600 7,200 4,480 2,500 Road Length 100% 100% 100% 100% 100% Slope Replacement Percent % Basalt Basalt Basalt Basalt Basalt Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer 1 1 1 1 1 Alluvium Alluvium Alluvium Alluvium Alluvium Growth Media Material Type (select) Small Truck Small Truck Small Truck Small Truck Small Truck Cover Placement Equipment Fleet (select) Growth Media Page 1 of 3 Recontouring No. of Excavators Cut Material Type Equipment Fleet(3) if grade >30% (select) (select) (select) Grading Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix (select) You must fill in ALL green cells and relevant blue cells in this section for each road 2 0 3 3 3 degrees 60.0 60.0 60.0 60.0 60.0 Cut Slope Haul Road Safety Berms 1.3 1.3 1.3 1.3 1.3 Ungraded Slope _ H:1V Physical (1) Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Mulch (select) Chemical Chemical Chemical Chemical Chemical Fertilizer (select) Revegetation Disturbed Area (if calculated elsewhere) acres User Overrides 30.0 % 10.0 % Regrade Volume (if calculated elsewhere) cy You must fill in ALL green cells and relevant blue cells in this section for each road Maximum grade allowed for dozer: Maximum grade allowed for grader: Bond Calculation Roads Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $354,032 $330,779 $2,246 $687,057 $3,631 $690,688 Equipment (3) If original slope >30% "optimize" option will only select among the excavator options. Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 Description (required) Dozing Material Condition (select) (2) Enter 1 if berm on only one side of road, 2 if both sides of road are bermed. Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 Description (required) Roads - User Input (cont.) 1 2 3 4 5 ID Code User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value TOTALS Subtotal Earthworks $116,694 $129,416 $6,816 $252,926 $4,228 $257,154 Labor (1) All Physical parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003 p. 3-11 3. Comision 2010 Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 Roads - User Input (cont.) 1 2 3 4 5 Description (required) Facility Description Roads - User Input Color Code Key Revegetation Cost Grading Costs Cover Placement Cost Ripping Cost Roads - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Yes Yes Yes Yes Yes Scarifying/ Ripping? (select) 12 12 12 12 12 Growth Media Thickness in Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Ripping Fleet (select) ft 30,000 30,000 30,000 30,000 30,000 Distance to Growth Media Stockpile Growth Media < In Nevada use 10' < In Nevada use 30' Roads -6 -6 -6 -6 -6 Slope from Road to Stockpile % grade Minimum of 1 acre crew time per area Revegetation Calculations Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Roads - Growth Media Costs Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 Description (required) Roads - Regrading Costs 1 2 3 4 5 Figure 1 - Regrading Volume Calculation 12,199 118,624 101,909 37,987 21,198 291,917 Regrading Volume cy Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Recontouring Fleet Minimum 1 hr ripping/scarifying time per area Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Road length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) For dozer regrading assumes push distance = 3 x road width Ripping/Scarifying Calculations Will not allow dozer for slopes greater than 30% For dozer regrading push distance = road width Assumes dozer push is uphill Assumes minimum push distance of 100 ft Regrading Volume and Footprint Volume Roads - Calculations Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 157 110 157 282 282 Fleet Productivity cy/hr 77.7 1078.4 649.1 134.7 75.2 2015.1 $4,500 $62,450 $37,589 $7,800 $4,355 $116,694 Total Labor Cost $ Page 2 of 3 Total Fleet Hours hr Bond Calculation Roads $13,651 $189,464 $114,040 $23,665 $13,212 $354,032 Total Equipment Cost $ $18,151 $251,914 $151,629 $31,465 $17,567 $470,726 Total Regrading Cost $ Total berm volume doubled if both sides of road are bermed. If length of berm on each side of road is different, input total length of both berms and input 1 for number of sides a # b! "h 2 Safety Berm Volume Calculation Roads Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 1 2 3 4 5 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Mine Access Roads, 2 Air Strip, 3 Overburden Haul Road, 3 Ore Haul Road, 3 Coches Haul Road, 3 Description (required) Roads - Scarifying/Revegetation Costs 1 2 3 4 5 Description (required) 5.52 12.9 19.57 10.41 5.81 54.21 Surface Area acres 8,903 20,812 31,580 16,800 9,375 87,470 Growth Media Volume cy Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls ft 49 216 118 101 101 Final Slope Length Small Truck Small Truck Small Truck Small Truck Small Truck Growth Media Replacement Fleet 3.7 9.4 13.7 7.7 4.3 38.8 Ripping Hours hrs 571 571 571 571 571 $ $ $214 $544 $793 $446 $249 $2,246 Ripping Labor Costs 15.6 36.4 55.3 29.4 16.4 153.1 Page 3 of 3 $650 $1,651 $2,407 $1,353 $755 $6,816 Ripping Equipment Cost 16 16 16 16 16 Number of Fleet Productivity Trucks/ Scrapers Total Fleet Hours LCY/hr Bond Calculation Roads $ $864 $2,195 $3,200 $1,799 $1,004 $9,062 Total Ripping Costs $ $13,187 $30,769 $46,745 $24,852 $13,863 $129,416 Total Labor Cost $ $431 $1,006 $1,526 $812 $453 $4,228 Revegetation Labor Cost $ $33,704 $78,644 $119,478 $63,520 $35,433 $330,779 Total Equipment Cost $ $370 $864 $1,311 $697 $389 $3,631 Revegetation Equipment Cost $ $46,891 $109,413 $166,223 $88,372 $49,296 $460,195 Total Topsoiling Cost $3,061 $7,153 $10,851 $5,772 $3,222 $30,059 $ Revgetation Material Cost $3,862 $9,023 $13,688 $7,281 $4,064 $37,918 $ Total Revegetation Cost Roads -1 ID Code Marlin Open Pit (MEG 2003, Fig. 3.4-4) Cochise Open Pit (MEG 2003, Fig. 3.4-4) Description (required) 5,422 2,169 7,591 Safety Berm Volume cy Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Pits - Safety Berms - Revegetation Costs Marlin Open Pit (MEG 2003, Fig. 3.4 Cochise Open Pit (MEG 2003, Fig. Description (required) Pits - Safety Berm Construction Costs 1 2 N/A $15,682 $15,682 Materials Totals $4,069 $19,782 $23,851 ft 8,000 3,200 Berm (or Highwall) Length 3 3 Berm Height ft 10 10 Berm Base Width ft Pit Berms Direct Input Pull Down Selection Alternate Input Standardized Data Locked Cell - Formula or Reference $2,645 $1,894 $4,539 Equipment Small (D7R) Small (D7R) Selected Fleet 308 308 Corrected Fleet Productivity cy/hr 17.6 7.0 24.6 Total Hours Safety Berm Dozer: Length x (Berm Base Width + Dozer Push Distance) - accounts for disturbance created in borrow area Minimum 1 acre revegetation crew time per area Revegetation Calculations Productivity assumes push distance of: 100 feet a # b! "h 2 Safety Berm Volume Calculation Pits - Calculations 1 2 $1,424 $2,206 $3,630 Labor User Input - Direct Input User Input - Pull Down List Program Constant (can override) Standardized Data (cannot override) Program Calculated Value Pits - User Input Color Code Key Safety Berm Construction Cost Safety Berm Revegetation Cost TOTALS Pits - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $ $1,019 $405 $1,424 Safety Berm Labor Cost 1.3 1.3 Berm Sideslope Angle _H:1V $ $1,892 $753 $2,645 Safety Berm Equipment Cost $2,911 $1,158 $4,069 Page 1 of 2 $ Total Safety Berm Cost Mix 1 Mix 1 Fertilizer (select) Straw Mulch Chemical Straw Mulch Chemical Mulch (select) Small Small Berm Construction Berm Material Equipment Fleet Type (select) (select) Alluvium Alluvium Revegetation Berm Construction Seed Mix (select) Bond Calculation Pits Pits 1 2 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Marlin Open Pit (MEG 2003, Fig. 3.4 Cochise Open Pit (MEG 2003, Fig. Description (required) 20.2 8.1 28.3 Flat Area acres $1,353 $541 $1,894 $ $ $1,576 $630 $2,206 Revegetation Equipment Cost Revegetation Labor Cost Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $ $11,201 $4,481 $15,682 Revgetation Material Cost $ $14,130 $5,652 $19,782 Total Revegetation Cost Page 2 of 2 Bond Calculation Pits Pits User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value $5,118 $163 $3,011 $8,292 -1 -1 Ventilation Shaft (MEG 2003 p. 3-29) Description (required) ID Code ft 16 Height ft 15 Width Distance to Bulkhead ft 150 Backfill/ Plug Type Concrete + R Physical Characteristics 1.2 Backfill Material (select) Alluvium 500 Distance to Backfill Borrow ft Backfill Material Backfill Material Type (select) 13 Diameter ft Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Concrete Cap Alluvium Small Truck Cover/ Backfill Fleet (select) 2 0 Slope from Shaft to Borrow Area % grade Page 1 of 2 Uses truck & loader load, haul place fleets for shafts Concrete cap will be 1.5 feet (45 cm) thick, reinforced, structually supported. Uses 1 large and 1 small dozer for adit backfill Assumes max 400 foot (122 m) push Assumes average operator and 50 min/hr availability Backfill Calculations Using Means Heavy Construction Cost Data (2004) Estimage cover/bulkhead thickness Assumes that all concrete works are reinforced Productivity for crew from Means Heavy Construction Cost Data (2004) adjusted for supervision (addressed in Misc. Costs) and Davis-Bacon Wage Rates Assumes 18 in (45 cm) thick slab Concrete Cover/Bulkhead Volume Calculation 500 Distance to Backfill Borrow ft Thickness (if not complete backfill) ft Backfill/ Plug Type (select) Backfill or Foundation Cover Cover Material Type (select) Shaft Depth (for backfill method) ft 0 Slope from Adit to Borrow Area % grade You must fill in ALL green cells and relevant blue cells in this section for each shaft Physical Characteristics Adits, Declines and Portals - Volume Calculations Underground Openings - Calculations 1 ID Code Totals $10,832 $564 $5,672 $17,068 Notes: 1) Foam (adit) option is for smaller openings that can be plugged with simple forms and a 5' thick plug. 2) Foam (production) option is for larger production openings (declines, etc.) and requires larger form construction and minimum 10' thick plug. 3) All foam plugs include minimum 15' of backfill from opening to plug. 4) Bat gate option is for small openings and the material cost is the same for any size opening. Decline (MEG 2003, p. 3-28) Shaft Openings - User Input 1 Description (required) $2,275 N/A $2,328 $4,603 Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $3,439 $401 $334 $4,174 Labor Equipment Adits, Declines and Portals - User Input Color Code Key Adit and Decline Plugging Shaft Backfill/Cover Shaft Capping TOTALS Underground Openings Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Underground Openings Underground Openings Decline (MEG 2003, p. 3-28) 1 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Ventilation Shaft (MEG 2003 p. 3-29 Description (required) Shaft Plugging 1 Description (required) Backfill or Cover Volume cy 10 10 133 133 1,333 Cover Area ft2 13 13 Bulkhead Volume cy Backfill (rock) Volume cy $ $3,011 $3,011 Total Labor Cost Cover/Cap Notes: $4,087 $4,087 Total Labor Cost $ $2,275 $2,275 Total Material Cost $ $6,824 $6,824 Total Bulkhead Cost $ $1,031 $1,031 Total Labor Cost $ $2,977 $2,977 Total Equipment Cost $ Material (Foam) Cost $ Backfill or Foam (1) $ $334 $334 Total Equipment Cost $ $2,328 $2,328 Total Material Cost $ $5,672 $5,672 Total Shaft Cap Cost $ $401 $401 Page 2 of 2 $ Total Equipment Cost Backfill/Cover $163 $163 Total Labor Cost $ $564 $564 Total Backfill Cost $4,008 $4,008 Total Backfill Cost $ Total Labor Cost $ Total Equipment Cost $ Total Material Cost $ Bat Gate or Culvert (2,3,4) If concrete cap is used, assume 10 feet (3 m) of rock backfill on top of cap. Assumes that all concrete works are reinforced If backfill is used, assume overfill by 5 feet (1.5 m) Carpenter D-B rate incl Fringe $41.44 per hour 1) Foam costs include 1 hour move to and setup + 1 hr. minimum crew time 2) Assumes 1 hr walk-in/walk-out time for equipment 3) Batgate assumes 8 hr install time each 4) Bat culvert backfill costs based on one 8-hr day (i.e. backfilling hours = 8 hrs). $462 $462 Total Equipment Cost $ Bulkhead Construction Uses RS Means Heavy Construction Cost Data for bulkhead production rate, material costs and crews Adits, Declines and Portals Plugging Shaft Volume Calculations Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Underground Openings Total Bat Gate Cost $ $5,118 $5,118 Total Labor Cost $ $3,439 $3,439 $10,832 $10,832 Total Plugging Costs $ Underground Openings $2,275 $2,275 Total Material Cost $ Total Costs Total Equipment Cost $ -1 Crude Water Pond, 2 TSF Filtrate Pond, 3 Open Pit Sediment Pond, ? TSF II Filtrate Pond Description (required) Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Pond Volume Calculation Process Ponds - Calculations 1 2 3 4 ID Code $0 $5,275 $5,275 N/A N/A Materials Totals $141,458 $79,354 $71,032 $291,844 $6,725 $298,569 ft 350 300 300 300 Pond Length ft 35 15 15 15 ft 300 300 100 100 Pond Depth Pond Width 10.0 2.5 2.5 2.5 _H:1V Pond Sideslope Angle Pond Dimensions (1) 121 hrs 120 121 Crew Cut & Fold Time Liner Alluvium Alluvium Alluvium Alluvium Backfill Material Type (select) Small Truck Small Truck Small Truck Small Truck Backfill Equipment Fleet (select) Backfill Alluvium Alluvium Alluvium Alluvium Growth Media Material Type (select) Small Truck Small Truck Small Truck Small Truck Growth Media Placement Equipment Fleet (select) Growth Media Mix 1 Mix 1 Mix 2 Mix 3 Seed Mix (select) 4.00 4.00 acres 100% 100% 100% 200% (100% if blank) Percent Backfill Page 1 of 3 Straw Mulch Straw Mulch Straw Mulch Straw Mulch Mulch (select) ft Fertilizer (select) 2,500 2,500 500 500 Chemical Chemical Chemical Chemical Revegetation Disturbed Area (if calculated elsewhere) Distance from Backfill Borrow -6 -6 0 0 % grade Slope from Facility to Borrow Area Backfill (1) You must fill in ALL green cells and relevant blue cells in this section for each pond Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $100,940 $57,038 $25,076 $183,054 $670 $183,724 Equipment (1) All Pond Dimension and Backfill parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003, Fig. 3.4-2 and p. 3-49 3. MEG 2003, Fig. 3.4-10 and p. 3-14 Crude Water Pond, 2 TSF Filtrate Pond, 3 Open Pit Sediment Pond, ? TSF II Filtrate Pond Description (required) Process Ponds - User Input (cont.) 1 2 3 4 Labor $40,518 $22,316 $45,956 $108,790 $780 $109,570 User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Process Ponds - User Input Color Code Key Backfilling Costs Growth Media Placement Costs Liner Cutting & Folding Costs Subtotal Earthworks Revegetation Costs TOTALS Process Ponds - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Process Ponds 17,000 cy Pond Volume (if calculated elsewhere) 12 12 12 12 in Growth Media Thickness 30,000 30,000 30,000 30,000 ft Distance from Growth Media Stockpile Growth Media -6 -6 -6 -6 % grade Slope from Facility to Stockpile Process Ponds Crude Water Pond, 2 TSF Filtrate Pond, 3 Open Pit Sediment Pond, ? TSF II Filtrate Pond $15,234 $15,361 $15,361 $45,956 120.0 121.0 121.0 362.0 Crew Hours hrs Total Labor Cost $ 0 1 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Crude Water Pond, 2 Description (required) 17,000 Backfill Volume cy Small Truck Backfill Fleet Process Ponds - Backfill and Growth Media Costs 1 2 3 4 Description (required) Process Ponds - Liner Cutting and Folding Minimum 1 acre revegetation crew time per area Revegetation Calculations Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 560 Fleet Productivity LCY/hr $8,382 $25,076 $8,312 $8,382 Total Equipment Cost $ 3 Number of Trucks/ Scrapers 30.4 Total Fleet Hours hrs Pond Backfill $23,743 $71,032 $23,546 $23,743 Total Liner Removal Cost $ Page 2 of 3 $19,327 $ $ $7,712 Total Equipment Cost Total Labor Cost $27,039 $ Total Backfill Cost Bond Calculation Process Ponds 6,453 Topsoil Volume cy Small Truck Topsoil Repacement Fleet 571 Fleet Productivity LCY/hr 16 Number of Trucks/ Scrapers 11.3 Total Fleet Hours Growth Media $9,552 $ Total Labor Cost $33,966 $ Total Topsoiling Cost Process Ponds $24,414 $ Total Equipment Cost TSF Filtrate Pond, 3 Open Pit Sediment Pond, ? TSF II Filtrate Pond 1 2 3 4 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Crude Water Pond, 2 TSF Filtrate Pond, 3 Open Pit Sediment Pond, ? TSF II Filtrate Pond Description (required) Process Ponds - Revegetation Costs 2 3 4 4 4 0.7 0.7 9.4 Flat Area acres 83,667 38,542 9,375 18,750 $268 $268 $67 $67 $670 $ $ $312 $312 $78 $78 $780 Revegetation Equipment Cost 560 298 298 Revegetation Labor Cost Small Truck Small Truck Small Truck Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $ $2,218 $2,218 $409 $430 $5,275 Revgetation Material Cost 3 1 1 $ $2,798 $2,798 $554 $575 $6,725 Total Revegetation Cost 193.6 68.8 31.5 62.9 $100,940 $40,518 Page 3 of 3 $43,741 $12,637 $25,235 $17,452 $5,123 $10,231 $141,458 $61,193 $17,760 $35,466 Bond Calculation Process Ponds 15,129 6,453 1,111 1,111 Small Truck Small Truck Small Truck 571 571 571 16 16 16 26.4 11.3 1.9 1.9 $22,316 $9,552 $1,606 $1,606 $79,354 $33,966 $5,711 $5,711 Process Ponds $57,038 $24,414 $4,105 $4,105 -1 ID Code Description (required) Dozing Material (select) $0 Totals % grade Underlying Ground Slope Ungraded Slope _ H:1V Final Slope _ H:1V Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Grading Equipment Fleet (select) Figure 2 - Regrading Volume Calculation Heap Material Type (select) Grading Lift (heap) Height ft (1) Mid-Bench Length ft Average Flat Area Long Dimension (ripping distance) ft Final (Regraded) Heap Footprint acres Regrade Volume (if calculated elsewhere) cy Slot/ Side-by-Side (select) Cover Material Type (select) Cover Placement Equipment Fleet (select) Cover Growth Media Equipment Fleet (select) Seed Mix Slopes (select) Seed Mix Flat Areas (select) Mulch Slopes (select) Cover Thickness Slopes in Page 1 of 2 Distance from Cover Borrow ft Mulch Flat Areas (select) Fertilizer Slopes (select) Revegetation Cover Thickness Flat Areas in Cover(lower layer) Use when existing heap material is not suitable drain rock Assume to be constructed in existing solution channels Assume 2H:1V ditch sideslopes Drain rock assumed to be Gravel - Dry at 2,550 lb/cy (1,510 kg/m3) from CAT Handbook 35th Ed. Drainage Channel Calculations Figure 3 - Final Slope Area and Footprint Area Calculation Final Slope Area and Footprint Area Calculations Growth Media Material Type (select) Growth Media You must fill in ALL green cells and relevant blue cells in this section for each heap, lift or heap category % grade Final Top Slope Physical You must fill in ALL green cells and relevant blue cells in this section for each heap, lift or heap category $0 $0 $0 $0 $0 $0 $0 dozing distance: based on 2/3 final cut slope + 2/3 final fill slope (minimum = 50 ft) Regrading Push Distance Calculation Regrading Volume Calculation Heap Leach Pads - Calculations 1 $0 $0 N/A N/A N/A N/A $0 Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $0 $0 Equipment Notes: (1) All Physical parameters must be input even if manual overrides for volume or area are used. Description (required) Heap Leach Pads - User Input (cont.) 1 Labor User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Heap Leach Pads - User Input Color Code Key Grading Costs Cover Placement Cost Topsoil Placement Cost Ripping/Scarifying Cost Subtotal Earthworks Revegetation Cost TOTALS Heap Leach Pads - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Heap Leach Fertilizer Flat Areas (select) Slope Scarify/ Rip? (select) Flat Area Scarify/ Rip? (select) Scarifying/ Ripping Fleet (select) Distance from Growth Material Stockpile ft Growth Media Slope from Slope Growth Flat Area Heap to Media Growth Media Cover Borrow Thickness Thickness % grade in in Heap Leach Slope from Heap to Stockpile % grade Figure 2 - Dozing Distance Calculation Regrading Volume cy Dozing Distance (see above) ft Cover Volume cy Cover Replacement Fleet 1 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Description (required) Flat Area acres Total Surface Area acres Fleet Productivity LCY/hr Uncorrected Dozer Productivity cy/hr Dozing Material Final Slope Length ft Number of Trucks/ Scrapers Flat Area Long Dimension ft Total Fleet Hours Cover (lower layer) Grade Correction Flat Area Scarifying/ Ripping Hours hrs $ $ Slope Scarifying/ Ripping Hours hrs Cover Equipment Cost Side-by-Side or Slot Dozing Cover Labor Cost Density Correction Scarifying/ Ripping Labor Costs $ $ Growth Media Volume cy Total Dozer Hours hr Scarifying/ Ripping Equipment Cost $ Total Cover Cost Total Hourly Productivity cy/hr $ Total Scarifying/ Ripping Costs Growth Media Replacement Fleet Total Labor Cost $ Page 2 of 2 $ Total Regrading Cost $ $ Revegetation Equipment Cost Number of Trucks/ Scrapers $ Revgetation Material Cost Total Fleet Hours Growth Media Placement Revegetation Labor Cost Fleet Productivity BCY/hr 1) Minimum total ripping hours = 1 (i.e. If total ripping hrs (slope + flat) < 1, then one hour of fleet time is assumed, regardless of acres shown in in scarifying table.) Slope Area acres Heap Leach Pad - Scarifying/Revegetation Costs 1 Description (required) Heap Leach Pad - Cover and Growth Media Costs 1 Description (required) Total Equipment Cost $ Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Mid-bench length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr ripping/scarifying per area Revegetation: Minimum 1 acre revegetation crew time per area Flat Areas: Slopes: Ripping/Scarifying Calculations Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Heap Leach Pad - Regrading Costs 2 c1 " c 2 ! 3 Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Heap Leach $ Total Revegetation Cost $ Total Labor Cost $ Total Equipment Cost $ Total Topsoiling Cost Heap Leach -1 ID Code (optional) Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Regrading Volume Calculation 1.0 0.6 0.6 0.6 0.6 0.6 0.6 Dozing Material Condition (select) Waste Rock Dump, 2 Marlin Pit, West Wall, 2 Marlin Pit, North Wall w/ No Road, 2 Marlin Pit, North Wall w/ Road, 2 Marlin Pit, East Wall, 2 Marlin Pit, Southeast Wall, 2 Cochise Pit, 2 Description (required) Waste Rock Dumps - Calculations 1 2 3 4 5 6 7 N/A N/A N/A N/A $0 $42,928 $42,928 Materials Totals $6,548,229 $327,261 $657,377 $14,012 $7,546,879 $54,152 $7,601,031 % Grade 20.0 0.0 0.0 0.0 0.0 0.0 0.0 Underlying Ground Slope 1.3 1.0 1.0 1.0 1.0 1.0 1.0 Ungraded Slope _ H:1V Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Dump Material Type (select) Medium Medium Medium Medium Medium Medium Medium Grading Equipment Fleet (select) Grading % Grade 1 1 1 1 1 1 1 Final Top Slope 690.0 165.0 165.0 230.0 130.0 100.0 100.0 Lift (dump) Height ft 720.0 600.0 330.0 1180.0 790.0 400.0 720.0 Mid-Bench Length ft 720.0 600.0 330.0 1180.0 790.0 400.0 720.0 Average Flat Area Long Dimension (ripping distance) ft Final (Regraded) Dump Footprint acres (if calculated elsewhere) cy (1) Regrade Volume 24.0 24.0 24.0 24.0 24.0 24.0 24.0 Cover Thickness Slopes in No No No No No No No Slot/Side-bySide (select) Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Cover Material Type (select) Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix Slopes (select) Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix Flat Areas (select) Page 1 of 3 Mulch Slopes (select) Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Final Slope Area and Footprint Area Calculations Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Growth Media Equipment Fleet (select) Growth Media Growth Media Material Type (select) Small Truck Alluvium Scraper Doze Alluvium Scraper Doze Alluvium Scraper Doze Alluvium Scraper Doze Alluvium Scraper Doze Alluvium Scraper Doze Alluvium Cover Placement Equipment Fleet (select) Cover You must fill in ALL green cells and relevant blue cells in this section for each dump, lift or dump category 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Final Slope _ H:1V Physical You must fill in ALL green cells in this section for each dump, lift or dump category Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $4,924,907 $236,836 $472,510 $3,138 $5,637,391 $5,187 $5,642,578 Equipment (1) All Physical parameters must be input even if manual overrides for volume is used. 2. Comision 2010 Waste Rock Dump, 2 Marlin Pit, West Wall, 2 Marlin Pit, North Wall w/ No Road, 2 Marlin Pit, North Wall w/ Road, 2 Marlin Pit, East Wall, 2 Marlin Pit, Southeast Wall, 2 Cochise Pit, 2 Description (required) Waste Rock Dumps - User Input (cont.) 1 2 3 4 5 6 7 Labor $1,623,322 $90,425 $184,867 $10,874 $1,909,488 $6,037 $1,915,525 User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Waste Rock Dumps - User Input Color Code Key Grading Costs Cover Placement Cost Topsoil Placement Cost Scarifying Cost Subtotal Earthworks Revegetation Cost TOTALS Waste Rock Dumps - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Waste Rock Dumps 500 300 300 300 300 300 300 Chemical Chemical Chemical Chemical Chemical Chemical Chemical Fertilizer Slopes (select) Chemical Chemical Chemical Chemical Chemical Chemical Chemical Fertilizer Flat Areas (select) 0 6 6 6 6 6 6 Yes Yes Yes Yes Yes Yes Yes Slope Scarify/ Rip? (select) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 Slope from Slope Growth Dump to Media Cover Borrow Thickness % grade in Revegetation Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Mulch Flat Areas (select) 24.0 24.0 24.0 24.0 24.0 24.0 24.0 Cover Thickness Flat Areas in Distance from Cover Borrow ft Cover (upper layer) Yes Yes Yes Yes Yes Yes Yes Flat Area Scarify/ Rip? (select) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 Flat Area Growth Media Thickness in Med Dozer Large Dozer Large Dozer Large Dozer Large Dozer Large Dozer Large Dozer Scarify/ Ripping Fleet (select) 30,000 30,000 30,000 30,000 30,000 30,000 30,000 Distance from Growth Media Stockpile ft Growth Media Waste Rock Dumps -6 -6 -6 -6 -6 -6 -6 Slope from Dump to Stockpile % grade Figure 2 - Dozing Distance Calculation Waste Rock Dump, 2 Marlin Pit, West Wall, 2 Marlin Pit, North Wall w/ No Road, 2 Marlin Pit, North Wall w/ Road, 2 Marlin Pit, East Wall, 2 Marlin Pit, Southeast Wall, 2 Cochise Pit, 2 2,310,133 114,311 62,871 436,819 93,425 27,985 50,373 3,095,917 Regrading Volume cy 1,126 223 223 311 176 135 135 Dozing Distance (see above) ft Waste Rock Dump, 2 Marlin Pit, West Wall, 2 Marlin Pit, North Wall w/ No Road, 2 Marlin Pit, North Wall w/ Road, 2 Marlin Pit, East Wall, 2 Marlin Pit, Southeast Wall, 2 Cochise Pit, 2 121,290 19,909 10,938 54,531 20,651 8,034 14,455 249,809 Cover Volume cy Small Truck Scraper Dozer Scraper Dozer Scraper Dozer Scraper Dozer Scraper Dozer Scraper Dozer Cover Replacement Fleet Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Waste Rock Dumps - Scarifying/Revegetation Costs 1 2 3 4 5 6 7 Description (required) Waste Rock Dumps - Cover and Growth Media Costs 1 2 3 4 5 6 7 Description (required) 298 926 926 926 926 926 926 Fleet Productivity LCY/hr 120 550 550 402 688 883 883 Uncorrected Dozer Productivity cy/hr 1.00 0.60 0.60 0.60 0.60 0.60 0.60 Dozing Material 1 1 1 1 1 1 1 Number of Trucks/ Scrapers 407.0 21.5 11.8 58.9 22.3 8.7 15.6 545.8 Total Fleet Hours Cover (lower layer) 1.60 1.60 1.60 1.60 1.60 1.60 1.60 Grade Correction $ $66,199 $3,753 $2,060 $10,280 $3,892 $1,518 $2,723 $90,425 Cover Labor Cost 0.79 0.79 0.79 0.79 0.79 0.79 0.79 Density Correction $ $163,284 $11,393 $6,253 $31,212 $11,817 $4,610 $8,267 $236,836 Cover Equipment Cost 1 1 1 1 1 1 1 Side-by-Side or Slot Dozing 60,645 9,954 5,469 27,265 10,325 4,017 7,228 124,903 Growth Media Volume cy 24,575.9 439.7 241.8 2,299.0 287.5 67.1 120.8 28,031.8 Total Dozer Hours hr Page 2 of 3 $ $229,483 $15,146 $8,313 $41,492 $15,709 $6,128 $10,990 $327,261 Total Cover Cost 94 260 260 190 325 417 417 Total Hourly Productivity cy/hr Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Growth Media Replacement Fleet $1,423,190 $25,463 $14,003 $133,135 $16,649 $3,886 $6,996 $1,623,322 Total Labor Cost $ Fleet Productivity BCY/hr 571 571 571 571 571 571 571 $5,740,930 $102,714 $56,485 $537,046 $67,160 $15,675 $28,219 $6,548,229 Total Regrading Cost $ 16 16 16 16 16 16 16 Number of Trucks/ Scrapers 106.2 17.4 9.6 47.7 18.1 7.0 12.7 218.7 Total Fleet Hours Growth Media Placement $4,317,740 $77,251 $42,482 $403,911 $50,511 $11,789 $21,223 $4,924,907 Total Equipment Cost $ $ $89,771 $14,708 $8,115 $40,321 $15,300 $5,917 $10,735 $184,867 Total Labor Cost Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Number of passes = Final slope length ÷ Grader width Travel distance = Number of passes x Mid-bench length Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr Minimum 1 hr ripping/scarifying time per dump Revegetation: Minimum 1 acre revegetation crew time per area Flat Areas: Slopes: Ripping/Scarifying Calculations Figure 3 - Final Slope Area and Footprint Area Calculation Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Waste Rock Dumps - Regrading Costs 2 c1 " c 2 ! 3 dozing distance: based on 2/3 final cut slope + 2/3 final fill slope (minimum = 50 ft) Regrading Push Distance Calculation Figure 1 - Regrading Volume Calculation Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Waste Rock Dumps $ $229,449 $37,593 $20,741 $103,058 $39,106 $15,124 $27,439 $472,510 Total Equipment Cost $ $319,220 $52,301 $28,856 $143,379 $54,406 $21,041 $38,174 $657,377 Total Topsoiling Cost Waste Rock Dumps 1 2 3 4 5 6 7 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 37.59 6.17 3.39 16.90 6.40 2.49 4.48 77.42 Slope Area acres Flat Area acres Total Surface Area acres 2,274 448 448 624 353 271 271 Final Slope Length ft 720 600 330 1,180 790 400 720 Flat Area Long Dimension ft 27.7 4.0 2.3 10.9 4.2 1.7 3.0 53.8 0.1 0.1 0.1 0.0 0.0 0.1 0.0 0.4 Slope Flat Area Scarifying/ Scarifying/ Ripping Hours Ripping Hours hrs hrs $ $4,884 $930 $545 $2,473 $953 $408 $681 $10,874 Scarifying/ Ripping Equipment Cost $ $1,610 $237 $139 $631 $243 $104 $174 $3,138 $6,494 $1,167 $684 $3,104 $1,196 $512 $855 $14,012 $ Page 3 of 3 $ $2,932 $481 $264 $1,318 $499 $194 $349 $6,037 Scarifying/ Revegetation Ripping Labor Total Scarifying/ Labor Costs Ripping Costs Cost Notes: 1) Minimum total ripping hours = 1 (i.e. If total ripping hrs (slope + flat) < 1, then one hour of fleet time is assumed, regardless of acres shown in in scarifying table.) Waste Rock Dump, 2 Marlin Pit, West Wall, 2 Marlin Pit, North Wall w/ No Road, 2 Marlin Pit, North Wall w/ Road, 2 Marlin Pit, East Wall, 2 Marlin Pit, Southeast Wall, 2 Cochise Pit, 2 Description (required) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Waste Rock Dumps $ $2,519 $413 $227 $1,132 $429 $167 $300 $5,187 Revegetation Equipment Cost $ $20,844 $3,420 $1,879 $9,371 $3,549 $1,381 $2,484 $42,928 Revgetation Material Cost $ $26,295 $4,314 $2,370 $11,821 $4,477 $1,742 $3,133 $54,152 Total Revegetation Cost Waste Rock Dumps -1 Solid Waste, 2 Bioremediation Cell Description (required) Totals $1,703 $25,868 $25,550 $561 $53,682 $2,099 $55,781 1 2 Final Landfill Footprint acres 1 1 Dozing Material (select) (1) 165 150 Average Long Dimension (ripping distance) ft Physical 525 700 Regrade Volume (calculated elsewhere) cy Alluvium Alluvium 2,500 2,500 Distance from Cover Borrow ft 0 0 12 12 Small Small Grading Equipment Fleet (select) No No Slot/ Side-by-Side (select) Alluvium Alluvium Cover Material Type (select) Small Truck Small Truck Growth Media Equipment Fleet (select) Growth Media Growth Media Material Type (select) Small Truck Alluvium Small Truck Alluvium Cover Placement Equipment Fleet (select) Cover Page 1 of 2 Ripping: Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr per area Mix 1 Mix 1 Seed Mix (select) 30,000 30,000 Distance Slope from from Growth Landfill to Growth Media Media Cover Borrow Thickness Stockpile % grade in ft Fertilizer (select) Yes Yes Scarify/ Rip? (select) Revegetation Straw Mulch Chemical Straw Mulch Chemical Mulch Type (select) -6 -6 Slope from Landfill to Stockpile % grade Growth Media (upper layer) Dozing: Dozing distance = 2/3 the area width up to 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Assumes flat push (grade correction factor = 1) Minimum 1 hr per area Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 40 40 Cover Thickness in Cover (lower layer) You must fill in ALL green cells and relevant blue cells in this section for each landfill Grading Landfill Material Type (select) Bond Calculation Landfills You must fill in ALL green cells and relevant blue cells in this section for each landfill Dozing, Ripping/Scarifying & Revegetation Calculations Landfills - Calculations 1 2 ID Code N/A N/A N/A $0 $1,664 $1,664 Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $1,107 $18,458 $18,365 $139 $38,069 $201 $38,270 (1) All Physical parameters must be input even if manual overrides for volume or area are used. 2. MEG 2003, p. 3-20 Solid Waste, 2 Bioremediation Cell Description (required) Landfills - User Input (cont.) 1 2 $596 $7,410 $7,185 $422 $15,613 $234 $15,847 Labor Equipment User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Landfills - User Input Color Code Key Grading Costs Cover Placement Cost Topsoil Placement Cost Ripping Cost Subtotal Earthworks Revegetation Cost TOTALS Landfills - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Med Dozer Med Dozer Scarifying/ Ripping Fleet (select) Landfills Solid Waste, 2 Bioremediation Cell Description (required) 525 700 1,225 Regrading Volume cy Solid Waste, 2 Bioremediation Cell 5,378 10,756 16,134 1 2 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Solid Waste, 2 Bioremediation Cell Description (required) 1.00 2.00 3.00 Final Area acres Landfills - Scarifying/Revegetation Costs 1 2 Description (required) 165 150 Long Dimension ft Small Truck Small Truck Cover Replacement Cover Volume Fleet ft 264 400 Dozing Distance (see above) ft Landfills - Cover and Growth Media Costs 1 2 Bond Calculation Landfills 0.8 1.6 2.4 Scarifying/ Ripping Hours hrs 453 453 Fleet Productivity LCY/hr 294 213 Uncorrected Dozer Productivity cy/hr 0.79 0.79 Density Correction $ $141 $281 $422 Scarifying/ Ripping Equipment Cost 2 2 Number of Trucks/ Scrapers $ $2,477 $4,933 $7,410 Cover Labor Cost 1 1 $ $6,170 $12,288 $18,458 Cover Equipment Cost 145 105 Side-by-Side Total Hourly or Slot Dozing Productivity LCY/hr $ $8,647 $17,221 $25,868 Total Cover Cost 3.6 6.7 10.3 Total Dozer Hours hr $387 $720 $1,107 Total Equipment Cost $ 1,613 3,227 4,840 Small Truck Small Truck Growth Media Growth Media Replacement Volume Fleet ft $208 $388 $596 Total Labor Cost $ $ $46 $93 $139 $ $187 $374 $561 $78 $156 $234 Page 2 of 2 $ $ $67 $134 $201 $555 $1,109 $1,664 $ $700 $1,399 $2,099 $ Scarifying/ Total Revegetation Revegetation Total Ripping Labor Scarifying/ Labor Equipment Revgetation Revegetation Costs Ripping Costs Cost Cost Material Cost Cost 11.9 23.7 35.6 Total Fleet Hours Cover Placement 1.00 1.00 Dozing Material Productivity = Dozer Productivity x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Landfills - Regrading Costs Revegetation: Minimum 1 acre revegetation crew time per area Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 571 571 Fleet Productivity LCY/hr 16 16 Number of Trucks/ Scrapers 2.8 5.7 8.5 Total Fleet Hours Growth Media Placement $595 $1,108 $1,703 Total Regrading Cost $ $ $2,367 $4,818 $7,185 Total Labor Cost $ $6,050 $12,315 $18,365 Total Equipment Cost Landfills $ $8,417 $17,133 $25,550 Total Topsoiling Cost -1 Notes: 1. MEG 2003, p. 3-14 TSF Surface, 1 TSF Dam Lift, 2 TSF II TSF Surface, 1 TSF Dam Lift, 2 TSF II Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Final (Regraded) Embankment Slope _ H:1V Totals $823,274 $2,719,595 $5,164,633 $45,802 $8,753,304 $214,118 $8,967,422 Final Embankment Height ft 151 4.1 151 Final Tailings Surface Area acres Physical 1,200 1,800 1,200 MidEmbankment or Ripping Length ft 350,000 100,000 350,000 Surface Regrade Volume (calculated elsewhere) cy Embankment Cover Thickness in 36 200 36 Tailings Surface Cover Thickness in Slot/Side-bySide (select) No No No Medium Medium Medium Grading Grading Equipment Fleet (select) Small Truck Small Truck Small Truck Figure 1 - Surface Areas Alluvium Alluvium Alluvium Cover Material Type (select) Cover Placement Equipment Fleet (select) Cover Alluvium Alluvium Alluvium Small Truck Small Truck Small Truck Mix 1 Mix 1 Mix 1 Seed Mix Tailings Surface (select) None None None Mulch Embankment Slopes (select) Fertilizer Embankment Slopes (select) Fertilizer Tailing Surface (select) Chemical Chemical Chemical Revegetation 24 12 24 Ripping/Scarifying/Revegetation Calculation Page 1 of 3 Regrading Volume Calculation Minimum 1 hr ripping/scarifying per area Minimum 1 acre revegetation crew time per area -6 -6 -6 No No No Yes Yes Yes Tailings Embankment Surface Slope Scarify/ Scarify/ Rip? Rip? (select) (select) 30,000 30,000 30,000 Slope from Tailings to Stockpile % grade Growth Media (upper layer) Distance from Tailings Growth Surface Embankment Material Growth Media Growth Media Stockpile Thickness Thickness in in ft Straw Mulch None Straw Mulch None Straw Mulch None Mulch Tailings Surface (select) 6 6 6 Slope from Tailings to Borrow % grade Grading assumed on impoundment surface only, not embankment Average push distance assumed to be 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Material assumed to be loose stockile (1.2 productivity factor) Dozing density correction based on dry sand = 2300/2400 = 0.96 Slope assumed to be 0 to 5% (1.0 productivity factor) Grading Calculations None None None Seed Mix Growth Media Embankment Equipment Slope Fleet (select) (select) Growth Media Growth Media Material Type (select) 2,500 2,500 2,500 Distance from Cover Borrow ft Cover (lower layer) You must fill in ALL green cells and relevant blue cells in this section for each tailings impoundment You must fill in ALL green cells and relevant blue cells in this section for each tailings impoundment 2. Robertson 2009 ID Code Top Surface Area provided by user Surface Area Calculations Tailings - Calculations 1 2 3 Description (required) Revegetation Tailings - User Input (cont.) 1 2 3 Description (required) N/A N/A N/A N/A $0 $169,733 $169,733 Materials Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $619,183 $1,940,515 $3,712,240 $22,901 $6,294,839 $20,509 $6,315,348 Labor Equipment $204,091 $779,080 $1,452,393 $22,901 $2,458,465 $23,876 $2,482,341 User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Tailings - User Input Color Code Key Tailings Surface Grading Cost Cover Placement Cost Topsoil Placement Cost Ripping Costs Subtotal Earthworks Revegetation Cost TOTALS Tailings - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Tailings Small Dozer Small Dozer Small Dozer Scarifying/ Ripping Fleet (select) Tailings TSF Surface, 1 TSF Dam Lift, 2 TSF II Description (required) 350,000 100,000 350,000 800,000 Regrading Volume cy TSF Surface, 1 TSF Dam Lift, 2 TSF II 730,840 110,244 730,840 1,571,924 Cover Volume cy 1 2 3 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 TSF Surface, 1 TSF Dam Lift, 2 TSF II Description (required) 0.1 0.1 0.1 Embankment Slope Area acres Tailings - Scarifying/Revegetation Costs 1 2 3 Description (required) Tailings - Cover and Growth Media Costs 1 2 3 Figure 1 - Regrading Volume Calculation 2 c1 " c 2 ! 3 151 4.1 151 Tailings Surface Area acres Small Truck Small Truck Small Truck Cover Placement Fleet 400 400 400 Dozing Distance (see above) ft 151.10 4.20 151.10 Total Surface Area acres 420 420 420 Cover Fleet Productivity LCY/hr 317 317 317 Uncorrected Dozer Productivity cy/hr 0.96 0.96 0.96 Density Correction 0 0 0 Final Slope Length ft 2 2 2 Number of Trucks/ Scrapers $ $902,207 $136,101 $902,207 $1,940,515 $ $362,219 $54,642 $362,219 $779,080 105.1 2.8 105.1 $ $11,300 $301 $11,300 Scarifying/ Ripping Equipment Cost $ $1,264,426 $190,743 $1,264,426 $2,719,595 Total Cover Placement Cost 227 227 227 Total Hourly Productivity cy/hr Page 2 of 3 $ $11,300 $301 $11,300 Scarifying/ Ripping Labor Cost Total Equipment Cost 1 1 1 Side-by-Side or Slot Dozing Total Labor Cost 1.20 1.20 1.20 Dozing Material Flat Area Slope Scarifying/ Scarifying/ Ripping Hours Ripping Hours hrs hrs 1740.1 262.5 1740.1 3742.7 Total Fleet Hours Cover Placement 1.00 1.00 1.00 Grade Correction $ $22,600 $602 $22,600 Total Scarifying/ Ripping Cost 487,227 6,615 487,227 981,068 Growth Media Volume cy 1541.9 440.5 1541.9 3524.3 Total Dozer Hours hr $ $11,778 $320 $11,778 Revegetation Labor Cost Small Truck Small Truck Small Truck $ $10,117 $275 $10,117 Revegetation Equipment Cost 571 571 571 $360,187 $102,900 $360,187 $823,274 Total Regrading Cost $ $ $83,730 $2,273 $83,730 Revgetation Material Cost 16 16 16 Number of Trucks/ Scrapers $ $105,625 $2,868 $105,625 Total Revegetation Cost 853.3 11.6 853.3 1718.2 Total Fleet Hours Growth Media Placement $270,896 $77,391 $270,896 $619,183 Growth Media Growth Media Fleet Placement Productivity Fleet LCY/hr $89,291 $25,509 $89,291 $204,091 Total Labor Cost $ Total Equipment Cost $ Figure 2 - Dozing Distance Calculation Regrading Push Distance Calculation Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Tailings - Surface Regrading Costs Figure 2 - Final Slope Area and Footprint Area Calculation Embankment height cos(Overal l slope angle Final Slope Area and Footprint Area Calculations Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Tailings $ $721,294 $9,805 $721,294 $1,452,393 Total Labor Cost $ $1,843,589 $25,062 $1,843,589 $3,712,240 Total Equipment Cost $ $2,564,883 $34,867 $2,564,883 $5,164,633 Total Topsoil Placement Cost Tailings Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 0.3 306.1 Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 306.4 213.0 $22,901 Page 3 of 3 $22,901 Bond Calculation Tailings $45,802 $23,876 $20,509 $169,733 $214,118 Tailings Labor User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value $508,841 $309,698 $54,434 $872,973 $18,358 $61,451 $5,610 $85,419 $2,870 $961,262 -1 N/A N/A N/A $0 N/A N/A N/A $0 $13,032 $13,032 Materials Totals $1,017,682 $359,375 $206,057 $1,583,114 $64,081 $218,530 $7,459 $290,070 $18,368 $1,891,552 65.6 39.4 85.3 13.1 65.6 75.5 118.1 98.4 98.4 76.9 118.1 250 85 200 200 230 445 400 100 130 160 820 35 30 300 Length ft 32.8 32.8 32.6 49.2 65.6 65.6 98.4 65.6 39.4 76.9 72.2 250 70 200 200 70 215 200 70 130 70 10 35 30 230 Width ft Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Construction Materials Minimum thickness of cover over unbroken slab: Bond Calculation Foundations & Buildings 5.0 ft 5 20 15 20 15 20 8 100 15 15 15 15 20 15 35 25 Eve Height ft 10 10 6 6 8 6 10 24 8 8 8 8 6 6 6 6 Wall Thickness in 2 2 2 2 2 2 2 6 2 2 2 2 2 2 6 4 Foundation Wall Height ft 66 70 70 70 66 76 118 98 98 77 118 250 85 200 200 230 445 400 100 130 160 820 35 30 300 0.10 0.06 0.13 0.03 0.20 0.23 0.53 0.30 0.18 0.27 0.39 2.87 0.27 1.84 1.84 0.74 4.39 3.67 0.32 0.78 0.51 0.38 0.06 0.04 3.17 Slab Demolition Foundation Cover Page 1 of 5 Growth Media 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 (1) Revegetation 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 2,500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 Slope from Facility to Stockpile % grade (entire footprint) Distance from Foundation Slope from Distance from Cover Facility to Growth Media Growth Media Borrow Area Borrow Area Thickness Stockpile ft % grade in ft Growth Media < In Nevada use 5ft per NV BLM Foundation Cover (1) Average Flat Building Area Area Long Footprint Dimension (including Foundation (ripping surrounding Cover distance) facilities) Thickness ft acres in You must fill in ALL green cells and relevant blue cells in this section for each building or facility 6 6 6 6 12 12 20 12 20 6 20 4 24 12 24 24 24 24 24 24 24 12 12 12 12 Slab Thickness in Physical Characteristics You must fill in ALL green cells and relevant blue cells in this section for each building or facility Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $508,841 $49,677 $151,623 $710,141 $45,723 $157,079 $1,849 $204,651 $2,466 $917,258 Equipment Notes: 1. Foundation cover only calculated to cover slab. Growth media estimated over entire footprint area 2. MEG 2003, p.3-11 5. Comision 2010 3. MEG 2003, p. 3-12 6. MARN 2007 4. MEG 2003, p. 3-13, p. 7-1 Administration, 2 Engineering, 2 Training, 2 Change House, 2 Enclosed Warehouse, 3 Open-sided Warehouse, 3 Equipment Workshop Metal, 3 Welding Shop, 3 Washing Bay, 3 Laboratory, 4 Processing Plant, 4 Housing & Other Buildings, 5 Primary Crusher, 5 Crushed Ore Surge, 5 Substation, 5 Grinding Pad, 5 Lixiviation Pad, 5 Separation Pad, 5 Concrete Plant, 5 Tank Pad, 5 Water Treatment Plant, 6 Coneyors, 5 Explosives Storage Incinterator, 5 Portal Bench Facilities, 5 ID Code Buildings & Foundation - User Input (cont.) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Description (required) Buildings & Foundation - User Input Color Code Key Building Demolition Cost Wall Demolition Cost Slab Demolition Subtotal Demolition Cover Placement Cost Growth Media Placement Cost Ripping Cost Subtotal Earthworks Revegetation Cost TOTALS Buildings & Foundation Demolition Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Foundations & Buildings Administration, 2 Engineering, 2 Training, 2 Change House, 2 Enclosed Warehouse, 3 Open-sided Warehouse, 3 Equipment Workshop Metal, 3 Welding Shop, 3 Washing Bay, 3 Laboratory, 4 Processing Plant, 4 Housing & Other Buildings, 5 Primary Crusher, 5 Crushed Ore Surge, 5 Substation, 5 Grinding Pad, 5 Lixiviation Pad, 5 Separation Pad, 5 Concrete Plant, 5 Tank Pad, 5 Water Treatment Plant, 6 Coneyors, 5 Explosives Storage Incinterator, 5 Portal Bench Facilities, 5 Slab Demo Method (select) Sm. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Lg. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Lg. steel nc 12 in (30 cm) t Break & bury Lg. steel nc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Sm. steel nc 8 in (20 cm) thBreak & bury Lg. steel nc 12 in (30 cm) t Break & bury Sm. masonrync 10 in (25 cm) t Break & bury Lg. masonrync 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. concretenc 12 in (30 cm) t Break & bury Lg. steel nc 12 in (30 cm) t Break & bury Sm. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Sm. steel nc 8 in (20 cm) thBreak & bury Building Type (select) Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Med Excavator Slab Breaking Equipment Fleet (select) Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Ripping/Scarifying Calculations Foundation area x cover thickness If "Bury in Place" is selected as slab demolition method, cover thickness is adjusted such that total cover (cover + growth media) equals 5 ft (per NV BLM Guidance) Cover Volume Calculation Minimum 1 hr excavator time for slab demolition Slab Demolition Calculations Using Means Heavy Construction Cost Data (2004) calculates cubic feet from building dimensions Estimage slab thickness and wall thickness if not known Assumes that all concrete slabs are reinforced Productivity for crew from Means Heavy Construction Cost Data (2004) adjusted for supervision (addressed in Misc. Costs) and Davis-Bacon Wage Rates Building Volume Calculations Buildings & Foundation - Calculations 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Description (required) Foundation Wall Type (select) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Cover Material Type (select) Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Cover Placement Equipment Fleet (select) Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Growth Media Placement Equipment Fleet (select) Page 2 of 5 Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Growth Media Material Type (select) Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix (select) Bond Calculation Foundations & Buildings Mulch (select) Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Fertilizer (select) Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Chemical Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Scarify/ Rip? (select) Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Ripping Fleet (select) Foundations & Buildings Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Minimum 1 acre revegetation crew time per area Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Revegetation Page 3 of 5 Bond Calculation Foundations & Buildings Foundations & Buildings Administration, 2 Engineering, 2 Training, 2 Change House, 2 Enclosed Warehouse, 3 Open-sided Warehouse, 3 Equipment Workshop Metal, 3 Welding Shop, 3 Washing Bay, 3 Laboratory, 4 Processing Plant, 4 Housing & Other Buildings, 5 Primary Crusher, 5 Crushed Ore Surge, 5 Substation, 5 Grinding Pad, 5 Lixiviation Pad, 5 Separation Pad, 5 Concrete Plant, 5 Tank Pad, 5 Water Treatment Plant, 6 Coneyors, 5 Explosives Storage Incinterator, 5 Portal Bench Facilities, 5 Description (required) 2,152 1,292 2,781 645 4,303 4,953 11,621 6,455 3,877 5,914 8,527 62,500 5,950 40,000 40,000 16,100 95,675 80,000 7,000 16,900 11,200 8,200 1,225 900 69,000 Building Footprint (slab area) sqft 32,275 19,385 41,712 9,668 86,067 74,292 406,736 161,376 0 88,704 170,536 500,000 595,000 0 0 0 0 0 0 0 0 41,000 24,500 13,500 1,380,000 3,644,751 Building Volume cu ft 197 144 236 125 262 282 433 328 276 308 381 1,000 310 800 800 600 1,320 1,200 340 520 460 1,660 140 120 1,060 Wall Length ft 394 288 472 250 524 564 2,598 1,312 0 616 762 2,000 1,860 0 0 0 0 0 0 0 0 3,320 280 240 2,120 Wall Area sq ft 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Administration, 2 Engineering, 2 Training, 2 Change House, 2 Enclosed Warehouse, 3 Open-sided Warehouse, 3 Equipment Workshop Metal, 3 Welding Shop, 3 Washing Bay, 3 Laboratory, 4 Processing Plant, 4 Housing & Other Buildings, 5 Primary Crusher, 5 Crushed Ore Surge, 5 Substation, 5 Grinding Pad, 5 Lixiviation Pad, 5 Separation Pad, 5 Concrete Plant, 5 Tank Pad, 5 Water Treatment Plant, 6 Description (required) 159 96 206 48 319 367 861 478 287 438 632 4,630 441 2,963 2,963 1,193 7,087 5,926 519 1,252 830 Cover Volume cy Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Cover Repacement Fleet 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 453 Fleet Productivity LCY/hr 40 24 52 12 159 183 717 239 239 110 526 772 441 1,481 2,963 1,193 7,087 5,926 519 1,252 830 304 45 33 2,556 Slab Volume cy 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Number of Trucks/ Scrapers 1.0 1.0 1.0 1.0 1.0 1.0 2.0 1.0 1.0 1.0 1.0 10.0 1.0 7.0 7.0 3.0 16.0 13.0 1.0 3.0 2.0 Total Fleet Hours Foundation Cover Building & Foundation - Foundation Cover and Growth Media Costs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Bond Calculation Foundations & Buildings $726 $726 $726 $726 $726 $726 $1,381 $799 $726 $726 $1,017 $7,411 $726 $4,723 $4,723 $1,889 $11,335 $9,519 $799 $2,035 $1,308 $ Total Cover Cost $9,840 $7,350 $4,050 $414,000 $1,017,682 $26,612 $40,928 $150,000 $154,700 $9,682 $5,816 $12,514 $2,900 $20,656 $22,288 $97,616 $38,730 Building Demolition Cost $ Page 4 of 5 $518 $518 $518 $518 $518 $518 $985 $570 $518 $518 $726 $5,288 $518 $3,370 $3,370 $1,348 $8,088 $6,792 $570 $1,452 $933 $ $208 $208 $208 $208 $208 $208 $396 $229 $208 $208 $291 $2,123 $208 $1,353 $1,353 $541 $3,247 $2,727 $229 $583 $375 $ $4,920 $3,675 $2,025 $207,000 $508,841 $4,920 $3,675 $2,025 $207,000 $508,841 Total Equipment Cost $13,306 $20,464 $75,000 $77,350 $13,306 $20,464 $75,000 $77,350 Total Labor Cost $4,841 $2,908 $6,257 $1,450 $10,328 $11,144 $48,808 $19,365 Total Equipment Cost $ Building Demolition $4,841 $2,908 $6,257 $1,450 $10,328 $11,144 $48,808 $19,365 Total Labor Cost $ 161 97 210 48 323 371 855 484 290 436 629 4,630 436 2,969 2,969 1,194 7,083 5,921 516 1,258 823 Topsoil Volume cy $65,802 $3,965 $3,398 $30,019 $309,698 $8,723 $15,103 $33,040 $36,865 $76,360 $4,601 $3,943 $34,831 $359,375 $10,121 $17,526 $38,340 $42,780 $6,473 $4,732 $7,755 $4,108 $8,609 $9,266 $59,754 $30,176 Wall Demolition Cost $ Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 571 Topsoil Repacement Fleet Fleet Productivity LCY/hr $10,558 $636 $545 $4,812 $49,677 $1,398 $2,423 $5,300 $5,915 $894 $654 $1,071 $568 $1,189 $1,280 $8,262 $4,172 Total Equipment Cost $ Wall Demolition $5,579 $4,078 $6,684 $3,540 $7,420 $7,986 $51,492 $26,004 Total Labor Cost $ Uses RS Means Heavy Construction Cost Data for building and wall demolition cost calculations. Uses CAT Handbook for slab breaking production. Building & Foundation Demolition Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $326 $326 $326 $326 $881 $1,011 $3,915 $1,305 $1,305 $587 $2,871 $4,209 $2,415 $8,059 $16,119 $6,493 $38,535 $32,237 $2,839 $6,819 $4,503 $1,664 $326 $326 $13,900 $151,623 Total Equipment Cost $ 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Number of Trucks/ Scrapers 1.0 1.0 1.0 1.0 1.0 1.0 1.5 1.0 1.0 1.0 1.1 8.1 1.0 5.2 5.2 2.1 12.4 10.4 1.0 2.2 1.4 Total Fleet Hours $845 $845 $845 $845 $845 $845 $1,268 $845 $845 $845 $930 $6,847 $845 $4,396 $4,396 $1,775 $10,482 $8,791 $845 $1,860 $1,183 $ Total Labor Cost $443 $443 $443 $443 $1,197 $1,374 $5,321 $1,774 $1,774 $798 $3,902 $5,720 $3,282 $10,952 $21,906 $8,824 $52,369 $43,810 $3,858 $9,267 $6,120 $2,261 $443 $443 $18,890 $206,057 Total Slab Breaking Cost $ Slab Demolition Growth Media $117 $117 $117 $117 $316 $363 $1,406 $469 $469 $211 $1,031 $1,511 $867 $2,893 $5,787 $2,331 $13,834 $11,573 $1,019 $2,448 $1,617 $597 $117 $117 $4,990 $54,434 Total Labor Cost $ $ $2,161 $2,161 $2,161 $2,161 $2,161 $2,161 $3,241 $2,161 $2,161 $2,161 $2,377 $17,500 $2,161 $11,235 $11,235 $4,537 $26,791 $22,470 $2,161 $4,753 $3,025 Total Equipment Cost $10,537 $7,103 $13,058 $5,107 $18,064 $19,493 $101,706 $45,838 $469 $22,240 $36,598 $109,551 $115,082 $2,893 $5,787 $2,331 $13,834 $11,573 $1,019 $2,448 $1,617 $71,319 $7,757 $5,540 $242,009 $872,973 Total Labor Cost $ $16,598 $10,991 $20,712 $7,451 $30,462 $32,928 $162,691 $70,680 $1,774 $37,531 $62,356 $194,060 $200,762 $10,952 $21,906 $8,824 $52,369 $43,810 $3,858 $9,267 $6,120 $88,461 $12,394 $8,436 $467,721 $1,583,114 Total Demolition Costs $ Foundations & Buildings $ $3,006 $3,006 $3,006 $3,006 $3,006 $3,006 $4,509 $3,006 $3,006 $3,006 $3,307 $24,347 $3,006 $15,631 $15,631 $6,312 $37,273 $31,261 $3,006 $6,613 $4,208 Total Topsoiling Cost $6,061 $3,888 $7,654 $2,344 $12,398 $13,435 $60,985 $24,842 $1,305 $15,291 $25,758 $84,509 $85,680 $8,059 $16,119 $6,493 $38,535 $32,237 $2,839 $6,819 $4,503 $17,142 $4,637 $2,896 $225,712 $710,141 Total Equipment Cost $ Total Costs Coneyors, 5 Explosives Storage Incinterator, 5 Portal Bench Facilities, 5 607 91 67 5,111 37,571 Small Truck Small Truck Small Truck Small Truck 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Administration, 2 Engineering, 2 Training, 2 Change House, 2 Enclosed Warehouse, 3 Open-sided Warehouse, 3 Equipment Workshop Metal, 3 Welding Shop, 3 Washing Bay, 3 Laboratory, 4 Processing Plant, 4 Housing & Other Buildings, 5 Primary Crusher, 5 Crushed Ore Surge, 5 Substation, 5 Grinding Pad, 5 Lixiviation Pad, 5 Separation Pad, 5 Concrete Plant, 5 Tank Pad, 5 Water Treatment Plant, 6 Coneyors, 5 Explosives Storage Incinterator, 5 Portal Bench Facilities, 5 Description (required) 0.10 0.10 0.10 0.10 0.20 0.20 0.50 0.30 0.20 0.30 0.40 2.90 0.30 1.80 1.80 0.70 4.40 3.70 0.30 0.80 0.50 0.40 0.10 0.10 3.20 23.50 Flat Area acres 66 70 70 70 66 76 118 98 98 77 118 250 85 200 200 230 445 400 100 130 160 820 35 30 300 Area Long Dimension ft 453 453 453 453 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 2.3 1.0 1.4 1.4 0.6 3.3 2.8 1.0 0.7 1.0 1.0 1.0 1.0 2.4 31.9 Scarifying/ Ripping Hours hrs Building & Foundation - Scarifying/Revegetation Costs 22 23 24 25 Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $176 $176 $176 $176 $176 $176 $176 $176 $176 $176 $176 $404 $176 $246 $246 $105 $580 $492 $176 $123 $176 $176 $176 $176 $422 $5,610 $ $ $58 $58 $58 $58 $58 $58 $58 $58 $58 $58 $58 $133 $58 $81 $81 $35 $191 $162 $58 $41 $58 $58 $58 $58 $139 $1,849 Scarifying/ Ripping Equipment Cost 1.0 1.0 1.0 11.0 89.0 Scarifying/ Ripping Labor Costs 2 2 2 2 $234 $234 $234 $234 $234 $234 $234 $234 $234 $234 $234 $537 $234 $327 $327 $140 $771 $654 $234 $164 $234 $234 $234 $234 $561 $7,459 $ Total Scarifying/ Ripping Costs $271 $208 $208 $2,352 $18,358 $945 $726 $726 $8,211 $64,081 613 97 65 5,114 37,591 Small Truck Small Truck Small Truck Small Truck Page 5 of 5 $78 $78 $78 $78 $78 $78 $78 $78 $78 $78 $78 $226 $78 $140 $140 $78 $343 $289 $78 $78 $78 $78 $78 $78 $250 $2,870 $ $67 $67 $67 $67 $67 $67 $67 $67 $67 $67 $67 $194 $67 $121 $121 $67 $295 $248 $67 $67 $67 $67 $67 $67 $214 $2,466 $ $55 $55 $55 $55 $111 $111 $277 $167 $111 $167 $222 $1,608 $167 $999 $999 $388 $2,440 $2,051 $167 $444 $277 $222 $55 $55 $1,774 $13,032 $ $200 $200 $200 $200 $256 $256 $422 $312 $256 $312 $367 $2,028 $312 $1,260 $1,260 $533 $3,078 $2,588 $312 $589 $422 $367 $200 $200 $2,238 $18,368 $ Revegetation Revegetation Revgetation Total Labor Equipment Material Revegetation Cost Cost Cost Cost $674 $518 $518 $5,859 $45,723 Bond Calculation Foundations & Buildings 571 571 571 571 16 16 16 16 1.1 1.0 1.0 9.0 72.7 $930 $845 $845 $7,608 $61,451 $2,377 $2,161 $2,161 $19,445 $157,079 Foundations & Buildings $3,307 $3,006 $3,006 $27,053 $218,530 LOCATION 1 2 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Mining Equipment Earthmoving, 1 Open Pit Light Vehicles, 1 LOCATION Equipment & Material Removal -1 TOTALS User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Diesel Tank, 1 80,000 gal, 1 Gasoline Tank, 1 2000 gal, 1 Lube & Hydraulic Oil Water Tank Notes: 1. MEG 2003, p. 3-12 1 2 3 4 -1 Other Demolition Color Code Key Other Demolition Equipment Removal ID Code ID Code $4,500 $414,920 $419,420 $0 $0 $0 Materials Page 1 of 2 Quantity 43 2 Quantity 1 1 1 3 Units ea ea Units ea ea ea ea Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $4,500 $124,476 $128,976 Equipment 1080 300 Labor Unit Cost ($) 1000 250 250 1000 $4,500 Labor Unit Cost ($) $9,000 $539,396 $548,396 Totals Bond Calculation Demo & Equip Removal Labor Project Name: Marlin - Reclamation Plan Other Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Other Demoltion and Equipment Removal - Cost Summary 3600 1000 Equipment Unit Cost ($) $1,000.00 $250.00 $250.00 $1,000.00 $4,500 Equipment Unit Cost ($) $0 $2,000 $500 $500 $6,000 $9,000 $201,240 $2,600 Total Cost ($) Total Cost ($) Other Demo & Equip Removal Material Unit Cost ($) Material Unit Cost ($) Underground Large Equipment, 3 Underground Small Equipment, 3 Processing Equipment, 2 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Notes: 1. MEG 2003, p. 3-19 2. MEG 2003, p. 3-35 3. MEG 2003, Table 3.4-3 3 4 5 6 Project Name: Marlin - Reclamation Plan Other Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Page 2 of 2 28 5 1,904 ea ea tons Bond Calculation Demo & Equip Removal 3600 1000 80 $414,920 1080 300 24 $124,476 $539,396 Other Demo & Equip Removal $0 $131,040 $6,500 $198,016 -1 Notes: 1. Comision 2010 Area 5B, 1 Office Area, 1 Lixiviation, 1 Treatment Plant, 1 Portal Bench, 1 Camp, 1 Description (required) Area 5B, 1 Office Area, 1 Lixiviation, 1 Treatment Plant, 1 Portal Bench, 1 Camp, 1 1 1 1 1 1 1 Dozing Material (select) ID Code $56,892 $56,892 N/A N/A N/A N/A Materials Totals $279,743 $265,586 $435,848 $17,661 $998,838 $71,769 $1,070,607 1,000 650 650 500 820 500 77,000 39,000 51,000 15,000 22,000 9,000 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 12 12 12 12 12 12 2,500 2,500 2,500 2,500 2,500 2,500 0 0 0 0 0 0 6 6 6 6 6 6 Growth Media Thickness in Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Dozing Material Type (select) Grading Small Small Small Small Small Small Grading Equipment Fleet (select) Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Cover Material Type (select) Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Cover Placement Equipment Fleet (select) Cover Alluvium Alluvium Alluvium Alluvium Alluvium Alluvium Page 1 of 2 Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Growth Media Placement Equipment Fleet (select) Growth Media Growth Media Material Type (select) Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix (select) Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Mulch (select) 30,000 30,000 30,000 30,000 30,000 30,000 Distance from Growth Media Stockpile ft Chemical Chemical Chemical Chemical Chemical Chemical Fertilizer (select) Revegetation -6 -6 -6 -6 -6 -6 Slope from Facility to Stockpile % grade Growth Media (upper layer) You must fill in ALL green cells and relevant blue cells in this section for each building or facility 14 7.4 9.9 3.7 62 5.6 Area acres Slope from Facility to Borrow Area % grade Distance from Cover Borrow Area ft Cover Thickness in Cover (lower layer) Regrade Volume (calculated elsewhere) cy Physical Average Flat Area Long Dimension (ripping distance) ft You must fill in ALL green cells and relevant blue cells in this section for each building or facility Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $181,817 $189,504 $313,279 $13,283 $697,883 $6,874 $704,757 Equipment Average push distance assumed to be 2/3 of the 600 feet maximum from Catepillar Handbook or 400 feet Material assumed to be loose stockile (1.2 productivity factor) Slope assumed to be 0 to 5% (1.0 productivity factor) Grading Calculations Yards, Etc. - Calculations 1 2 3 4 5 6 Description (required) Yards, Etc. - User Input (cont.) 1 2 3 4 5 6 Labor $97,926 $76,082 $122,569 $4,378 $300,955 $8,003 $308,958 User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Yards, Etc. - User Input Color Code Key Regrading Cost Cover Placement Cost Growth Media Placement Cost Ripping Cost Subtotal Earthworks Revegetation Cost TOTALS Yards, Etc. - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Yards, Etc. Yes Yes Yes Yes Yes Yes Scarify/ Rip? (select) Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Med Dozer Ripping Fleet (select) Yards, Etc. Area 5B, 1 Office Area, 1 Lixiviation, 1 Treatment Plant, 1 Portal Bench, 1 Camp, 1 77,000 39,000 51,000 15,000 22,000 9,000 213,000 Regrading Volume cy Area 5B, 1 Office Area, 1 Lixiviation, 1 Treatment Plant, 1 Portal Bench, 1 Camp, 1 22,587 11,939 15,972 5,969 100,027 9,035 165,529 Cover Volume cy 1 2 3 4 5 6 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Area 5B, 1 Office Area, 1 Lixiviation, 1 Treatment Plant, 1 Portal Bench, 1 Camp, 1 Description (required) 14.0 7.4 9.9 3.7 62.0 5.6 102.6 Flat Area acres Yards, Etc. - Scarifying/Revegetation Costs 1 2 3 4 5 6 Description (required) Yards, Etc. - Cover and Growth Media Costs 1 2 3 4 5 6 Description (required) 1,000 650 650 500 820 500 Area Long Dimension ft Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Topsoil Repacement Fleet 400 400 400 400 400 400 Dozing Distance (see above) ft 10.3 5.5 7.3 2.8 45.5 4.2 75.6 Scarifying/ Ripping Hours hrs 453 453 453 453 453 453 Fleet Productivity LCY/hr 213 213 213 213 213 213 Uncorrected Dozer Productivity cy/hr $596 $319 $423 $162 $2,635 $243 $4,378 $ Scarifying/ Ripping Labor Costs 2 2 2 2 2 2 $ $1,810 $966 $1,283 $492 $7,994 $738 $13,283 Scarifying/ Ripping Equipment Cost 50.0 26.0 35.0 13.0 221.0 20.0 365.0 Total Fleet Hours 1.20 1.20 1.20 1.20 1.20 1.20 Dozing Material Cover Number of Trucks/ Scrapers 1.00 1.00 1.00 1.00 1.00 1.00 Grade Correction $ $2,406 $1,285 $1,706 $654 $10,629 $981 $17,661 Total Scarifying/ Ripping Costs $ $10,387 $5,495 $7,348 $2,748 $45,962 $4,142 $76,082 Total Labor Cost 0.79 0.79 0.79 0.79 0.79 0.79 Density Correction Page 2 of 2 $ $1,092 $577 $772 $289 $4,836 $437 $8,003 Revegetation Labor Cost $ $25,872 $13,688 $18,302 $6,844 $114,480 $10,318 $189,504 Total Equipment Cost 126 126 126 126 126 126 Total Hourly Productivity cy/hr $938 $496 $663 $248 $4,154 $375 $6,874 $ Revegetation Equipment Cost $ $36,259 $19,183 $25,650 $9,592 $160,442 $14,460 $265,586 Total Cover Cost 611.0 310.0 405.0 119.0 175.0 71.0 1691.0 Total Dozer Hours hr $ $7,763 $4,104 $5,490 $2,051 $34,379 $3,105 $56,892 Revgetation Material Cost 11,293 5,969 7,986 2,985 50,013 4,517 82,763 Topsoil Volume cy $35,383 $17,952 $23,454 $6,891 $10,134 $4,112 $97,926 Total Labor Cost $ Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) x (Slot/Side-by-Side) Yards, Etc. - Regrading Costs Minimum 1 acre revegetation crew time per area Revegetation Flat area width = Final flat area ÷ Average long dimensions Number of passes = Flat area width ÷ Grader width Travel distance = Number of passes x Average long dimensions Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) Minimum 1 hr ripping/scarifying per area Ripping/Scarifying Calculations Yard area x cover thickness Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Cover Volume Calculation Bond Calculation Yards, Etc. $ $9,793 $5,177 $6,925 $2,588 $43,369 $3,917 $71,769 Total Revegetation Cost Small Truck Small Truck Small Truck Small Truck Small Truck Small Truck Topsoil Repacement Fleet $65,695 $33,331 $43,546 $12,795 $18,816 $7,634 $181,817 Total Equipment Cost $ 571 571 571 571 571 571 Fleet Productivity LCY/hr $101,078 $51,283 $67,000 $19,686 $28,950 $11,746 $279,743 Total Regrading Cost $ 16 16 16 16 16 16 19.8 10.5 14.0 5.2 87.6 7.9 145.0 Total Fleet Hours Growth Media Number of Trucks/ Scrapers $ $16,737 $8,876 $11,834 $4,396 $74,048 $6,678 $122,569 Total Labor Cost $ $59,516 $31,562 $42,082 $15,631 $263,311 $23,746 $435,848 Total Topsoiling Cost Yards, Etc. $ $42,779 $22,686 $30,248 $11,235 $189,263 $17,068 $313,279 Total Equipment Cost ID Code TSF Perimeter (MEG 2003, p. 3-14) Waste Rock Dump Perimeter (Comision 2010) Marlin Pit (Comision 2010) Cochise Pit (Comision 2010) Marlin Pit Dewater (Comision 2010) TSF II Perimeter Waste Rock Dump Contour (Comision 2010) Description (required) N/A N/A $15,246 N/A N/A $15,246 $14,640 $5,214 $19,854 $35,100 Materials 17000 11000 6000 1600 500 17000 16400 Diversion Length ft 3 3 3 3 35 3 2 Diversion Depth ft Marlin Pit West Marlin Pit East Cochise Pit TSF Perimeter, 2 each TSF II Perimeter, 2 each ID Code 100 100 100 200 200 Pond Width ft 225 225 225 600 600 Pond/Berm Length ft 10 10 10 10 10 Berm Height ft 3 3 3 3 5 3 3 Ditch Bottom Width ft 1 2 3 4 5 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Marlin Pit West Marlin Pit East Cochise Pit TSF Perimeter, 2 each TSF II Perimeter, 2 each Description 1 1 1 1 1 Excavating Material (select) Alluvium Alluvium Alluvium Alluvium Alluvium Material Type (select) Small Small Small Small Small Excavating Equipment Fleet (select) Sediment Ponds None 60 mil HDPE None None None Liner Type (select) Alluvium Alluvium Alluvium Alluvium Alluvium Small Truck Small Truck Small Truck Small Truck Small Truck Cover Placement Equipment Fleet (select) 2.5 2.5 2.5 2.5 2.5 Sideslope Angle _H:1V 1 1 1 1 0.6 1 0.6 Mix 1 Mix 1 Mix 1 Mix 1 None Mix 1 Mix 1 Seed Mix (select) Straw Mulch Straw Mulch Straw Mulch Straw Mulch Straw Mulch Mulch (select) Chemical Chemical Chemical Chemical Chemical Fertilizer (select) Cover Volume (if calculated elsewhere) cy Straw Mulch Straw Mulch Straw Mulch Straw Mulch None Straw Mulch Straw Mulch Mulch (select) Fertilizer (select) 2,500 2,500 2,500 2,500 2,500 Distance from Cover Borrow ft Yes Yes Yes Yes Yes Flat Area Scarify/ Rip? (select) Small Dozer Small Dozer Small Dozer Small Dozer Small Dozer Scarify/ Ripping Fleet (select) Ripping/Scarifying 12 12 12 12 12 Cover Thickness in Chemical Chemical Chemical Chemical None Chemical Chemical Revegetation Revegetation Regrade Volume (if calculated elsewhere) cy Page 1 of 3 Mix 1 Mix 1 Mix 1 Mix 1 Mix 1 Seed Mix (select) Final Area (if calculated elsewhere) acres Sediment Ponds Medium Medium Medium Medium Medium Medium Small Excavating Material (select) Cover Cover Material Type (select) 3 3 3 3 3 Crest Width ft 2.5 2.5 2.5 2.5 0.1 2.5 1.0 Excavating Equipment Fleet (select) Bond Calculation Sediment & Drainage Control Ditch Sideslope Angle _H:1V Diversions Ditches Sediment/Evaporation Pond Construction/Removal - User Input (cont.) -1 1 2 3 4 5 Description (required) Totals $53,725 $14,225 $64,251 $18,458 $1,326 $151,985 $18,512 $6,665 $25,177 $177,162 Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $33,054 $7,668 $18,731 $13,169 $862 $73,484 $1,790 $671 $2,461 $75,945 Equipment Sediment/Evaporation Pond Construction/Removal - User Input -1 1 2 3 4 5 6 7 Labor $20,671 $6,557 $30,274 $5,289 $464 $63,255 $2,082 $780 $2,862 $66,117 User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Diversion Ditches - User Input Color Code Key Runon Diversion Ditches Sed Pond Construct/Regrade Liner Installation Sed Pond Cover Scarify/Rip Subtotal Earthworks Diversion Ditch Revegetation Sediment Pond Revegetation Subtotal Revegetation TOTALS Drainage Control - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls -6 -6 -6 -6 -6 Slope from Pond to Cover Borrow % grade Sediment & Drainage Control TSF Perimeter (MEG 2003, p. 3-14) Waste Rock Dump Perimeter (Comis Marlin Pit (Comision 2010) Cochise Pit (Comision 2010) Marlin Pit Dewater (Comision 2010) TSF II Perimeter Waste Rock Dump Contour (Comisio Description 85,517 23,800 15,400 8,400 2,240 944 23,800 10,933 TSF Perimeter (MEG 2003, p. 3-14) Waste Rock Dump Perimeter (Comis Marlin Pit (Comision 2010) Cochise Pit (Comision 2010) Marlin Pit Dewater (Comision 2010) TSF II Perimeter Waste Rock Dump Contour (Comisio 7.50 4.80 2.60 0.70 0.90 7.50 3.30 27.30 Surface Area acres $503 $322 $174 $67 $503 $221 $1,790 $585 $257 $2,082 $ $ $585 $374 $203 $78 Revegetation Equipment Cost 349.0 171.0 43.0 23.0 6.0 3.0 66.0 37.0 Total Hours Revegetation Labor Cost 139 360 360 360 360 360 299 Corrected Excavator Productivity LCY/hr Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Sediment/Evaporation Ponds - Construction/Regrading Costs 1 2 3 4 5 6 7 Description Diversion Ditches - Revegetation Costs 0 1 2 3 4 5 6 7 Diversion Ditch Volume LCY Diversion Ditches - Excavation Costs 1) Assume 20% swell for excavations 2) Assumes heavy duty trenching bucket is used Figure 1 - Diversion Ditch Area & Volume Calculation a # b! "d 2 Diversion Ditch Volume Calculation Drainage Control - Calculations Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $4,159 $1,830 $14,640 $ $4,159 $2,662 $1,442 $388 Revgetation Material Cost $5,247 $2,308 $18,512 $ $5,247 $3,358 $1,819 $533 Total Revegetation Cost $33,054 $20,671 $ $16,712 $4,202 $2,248 $586 $293 $6,450 $2,563 $ $10,128 $2,547 $1,362 $355 $178 $3,909 $2,192 Diversion Ditch Equipment Cost Diversion Ditch Labor Cost $53,725 $26,840 $6,749 $3,610 $941 $471 $10,359 $4,755 $ Total Diversion Ditch Cost Page 2 of 3 #REF! 1) Assume balanced cut-to-fill for berm construction 2) Include cost for liner, if required. 3) Include line items for removal, if necessary. 4) Assume 20% swell for excavations 5) Minimum 1 hr ripping/scarifying per area 6) Minimum 1 acre revegetation crew time per area 0 0 2.5 0 0 Figure 2 - Sediment Ponds Sediment/Evaporation Pond Construction Calculation Bond Calculation Sediment & Drainage Control Sediment & Drainage Control Marlin Pit West Marlin Pit East Cochise Pit TSF Perimeter, 2 each TSF II Perimeter, 2 each 2,800 2,800 2,800 7,467 7,467 23,334 Regrading Volume LCY Marlin Pit West Marlin Pit East Cochise Pit TSF Perimeter, 2 each TSF II Perimeter, 2 each 807 807 807 4,517 4,517 11,455 Cover Volume cy Small Truck Small Truck Small Truck Small Truck Small Truck 1 2 3 4 5 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Marlin Pit West Marlin Pit East Cochise Pit TSF Perimeter, 2 each TSF II Perimeter, 2 each Description 0.80 0.80 0.80 3.50 3.50 9.40 Surface Area acres 218 218 218 610 610 1,873 Long Ripping Distance ft Sediment/Evaporation Ponds - Revegetation Costs 1 2 3 4 5 Description (required) 100 100 100 200 200 Cover Placement Fleet Sediment/Evaporation Ponds - Cover Costs 1 2 3 4 5 Description (required) Dozing Distance (see above) ft 100 100 100 200 200 Area Width ft 453 453 453 453 453 Cover Fleet Productivity LCY/hr 627 627 627 365 365 Uncorrected Dozer Productivity LCY/hr 0.79 0.79 0.79 0.79 0.79 Density Correction 0.5 0.5 0.5 2.5 2.5 6.5 Scarifying/ Ripping Hours hrs 2 2 2 2 2 Number of Trucks/ Scrapers $58 $58 $58 $145 $145 $464 $ $ $108 $108 $108 $269 $269 $862 Scarifying/ Ripping Labor Costs $ $78 $78 $78 $273 $273 $780 Revegetation Labor Cost $ $1,308 $1,308 $1,308 $7,267 $7,267 $18,458 Total Cover Placement Cost 9.1 9.1 9.1 41.7 41.7 110.7 Total Dozer Hours hr Page 3 of 3 $166 $166 $166 $414 $414 $1,326 $ Total Scarifying/ Ripping Costs $933 $933 $933 $5,185 $5,185 $13,169 $ $ $375 $375 $375 $2,082 $2,082 $5,289 Total Equipment Cost 308 308 308 179 179 Corrected Productivity LCY/hr Total Labor Cost 1.00 1.00 1.00 1.00 1.00 Excavating Material Scarifying/ Ripping Equipment Cost 1.8 1.8 1.8 10.0 10.0 25.4 Total Fleet Hours Cover Placement 1.00 1.00 1.00 1.00 1.00 Grade Correction $ $67 $67 $67 $235 $235 $671 Revegetation Equipment Cost $539 $539 $539 $2,470 $2,470 $6,557 Total Labor Cost $ Earthwork Bond Calculation Sediment & Drainage Control Productivity = Dozer Productivity x Grade Correction x Density Correction x Operator (0.75) x Material x Visibility x Job Efficiency (0.83) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls $444 $444 $444 $1,941 $1,941 $5,214 $ Revgetation Material Cost $630 $630 $630 $2,889 $2,889 $7,668 Total Equipment Cost $ $ $589 $589 $589 $2,449 $2,449 $6,665 Total Revegetation Cost $1,169 $1,169 $1,169 $5,359 $5,359 $14,225 Total Constr/ Regrading Cost $ $18,731 $18,731 $30,274 Total Equipment Cost $ $30,274 Total Labor Cost $ Liner $64,251 $64,251 Total Liner Cost $ Sediment & Drainage Control $15,246 $15,246 Total Material Cost $ User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Notes: 1. Use Landfills Sheet for landfill reclamation Description ID Code $0 $0 $9,196 $9,196 Description ID Code Notes: 1. Use Other Demo & Equip Removal Sheet for tank removal Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 1 -1 N/A $0 $91,245 $91,245 Fees Waste Type (select) (select) Waste Type $0 $0 $0 $100,441 $100,441 Totals Vacuum Truck Size (select) Quantity cy Page 1 of 3 Container Type (select) (select) Disposal Method Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $0 Equipment $0 Labor Waste Disposal - User Input - Hazardous Materials -1 Waste Disposal - User Input - Solid Waste Color Code Key Solid Waste - On Site Solid Waste - Off Site Hazardous Materials Hydrocarbon Contaminated Soils TOTALS Waste Disposal - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Waste Disposal Liquid Quantity gallons Distance to On-Site Disposal ft Soild Quantity cy Slope to Disposal (on-site) % grade On-Site mi One Way Travel Distance to Disposal Site Number of Trucks (user override) Waste Disposal One Way Travel Time to Disposal Site hr Months Dumpster Rental months Off-Site (select) Other Waste Type Notes: 1. Use Yards or Landfills Sheets for bioremediation facility reclamation Airstrip Pavement ID Code (select) On site Disposal Method Quantity cy 7,000 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Waste Disposal - Solid Waste Disposal Assumes all hazardous materials are known On site disposal assumes biopad treatment Exavation productivity =45 C.Y./hr (Means Heavy Construction, 2006: 02315-424-0360) Hydrocarbon Contaminated Soils Disposal Assumes all hazardous materials are known Enter EITHER solid or liquid quantity each line. If container type = 55 gallon drum then solid waste hauling costs apply Average density for solids assumed to be 2,600 lb/cy (1,540 kg/m3) Average density for liquids assumed to be weight of water 2,600 lb/cy (1,540 kg/m3) Vacuum truck sizes: small = 2,200 gal (~8,300 litres), large = 5,000 gal (~19,000 litres) Vacuum truck on site for 4 hours for each load Hazardous Materials Disposal Page 2 of 3 Off site disposal assumes use of average rolloff dumpster [30 cy (m3), 10 ton (tonne)] On site disposal assumes use of small loader/truck fleet for haulage Average density for on site disposal = 2,600 lb/cy (1,540 kg/m3) For on site disposal only 1 truck is required unless total truck hours > 8, only 2 trucks unless total truck hours are > 16 Solid Waste Disposal Waste Disposal - Assumptions & Calculations 1 -1 Description Waste Disposal - User Input - Hydrocarbon Contaminated Soils Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Waste Disposal Travel Distance to Offsite Disposal mi 2,500 Waste Disposal Waste Volume cy Airstrip Pavement Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 1 Description (required) cy 7,000 7,000 Quantity Waste Disposal - Hydrocarbon Contaminated Soils 1 Description Liquid Waste Volume gallons Waste Disposal - Hazardous Materials Disposal Description Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Total Fleet Hours Solid Waste Volume cy Number of Off Site Dumpster Loads $0 Disposal Fees $ $ Tons Transport Fees $ Pick-up Fees Total Fleet Hours Tons of Waste Number of Trucks Page 3 of 3 Treatment Cost $ $91,245 $91,245 Number of Truck Loads LCY/hr Onsite Fleet Productivity Bond Calculation Waste Disposal $0 $0 $0 $0 Total Labor Cost $ $9,196 $9,196 Transport Fees $ Total Offsite Costs (incl fees) $ $0 $0 $0 Total Equipment Cost $ Disposal Fees $ Total Labor Cost $ Total Waste Disposal Cost $ Waste Disposal Total Waste Disposal Cost $ $100,441 $100,441 $0 Total Hazardous Material Cost $ Total Equipment Cost $ $0 $0 -1 Perimter Fence, 1 1 2 Tailings Pond,1 Marlin East Sediment Pond, 2 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 -1 Description (required) Fence Installation Labor $20,850 $90,200 $260,100 $635,000 $58,500 $5,014,781 $177,375 $6,256,806 ft 19,000 1,000 Length ft 9,185 Length User Input - Direct Input User Input - Pull Down List Program Constant (can override) Program Calculated Value Notes: 1.MEG 2003, p. 3-13 1 2 Description (required) Fence Removal Color Code Key Fence Removal Fence Installation Pipe & Culvert Removal Powerlines Substations/Tranformers Rip-rap, rock lining, gabions Other Costs TOTALS Miscellaneous Cost Summary N/A $760,000 N/A N/A N/A $73,622 $520,581 $1,354,203 Materials Type Type (select type) Chain link 8-10ft (2.5-3m Chain link 8-10ft (2.5-3m Input Costs $8,450 $20,850 $21,280 $1,120 Equipment Cost $ Page 1 of 3 $85,690 $4,510 Labor Cost $ $29,300 $29,300 Total Cost $ $722,000 $38,000 ($) Material Cost Costs $8,450 Equipment Cost $ $20,850 Labor Cost $ You must fill in ALL green and blue cells (select type) Chain link 8-10 ft (2.5-3 m Input Totals $29,300 $872,600 $365,400 $635,000 $58,500 $7,414,201 $762,190 $10,137,191 Direct Input Pull Down Selection Alternate Input Locked Cell - Formula or Reference $8,450 $22,400 $105,300 N/A N/A $2,325,798 $64,234 $2,526,182 Equipment You must fill in ALL green and blue cells Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Misc. Costs $828,970 $43,630 Total Cost $ Misc. Costs -1 Pipe, 1 ft 45,000 Length Power Line, 1 Water Supply Well PSA-1, 2 miles 15.00 1.00 Powerline Length Type (select) Double Pole Single Pole Powerline Type Input (select type) 12 in (30 cm ) Diameter Input $105,300 $105,300 Equipment Cost $ Costs $22,400 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Rip-Rap & Rock Lining $365,400 $365,400 Total Cost $ $760,000 # 2 1 Number of Substations $600,000 $35,000 $635,000 Powerline Removal $ Page 2 of 3 You must fill in ALL green and blue cells $39,000 $19,500 $58,500 Substation Removal $ Costs You must fill in ALL green and blue cells $260,100 $260,100 Labor Cost $ You must fill in ALL green and blue cells $90,200 Notes: If substation owned by operator, use Other Demo & Equipment Removal sheet User may need to add line items in Foundations & Buildings for substation slab demolition and fence removal 1. MEG 2003, p. 3-18 2. Comision 2010 1 2 -1 Description (required) Powerline and Substation Removal Notes: 1. Comision 2010 1 Description (required) Pipe and Culvert Removal Notes: 1. Comision 2010 2. Sediment & Drainage Control Spreadsheet Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Misc. Costs $639,000 $54,500 $693,500 Total Cost $ $872,600 Misc. Costs -1 TSF Perimeter Ditch, 1 WRF Ditch, 1 Marlin Pit Ditch, 1 Cochise Pit Ditch, 1 Marlin Pit West Sediment Pond, 1 Marlin Pit East Sediment Pond, 1 Cochise Pit Sediment Pond. 1 TSF Dam Face, 1 TSF Dam Spillway, 1 TSF II Perimeter Ditch Open Pit Lime Treatment Marlin Pit Dewater Trench Culvert, 1 Underground Lime Treatment Underground Dewater Pump & Pipe Waste Rock Dump Contour Ditch C Marlin Pit Dewater Pump & Pipe Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Notes: 1. Comision 2010 1 2 3 4 5 6 -1 Description (required) Other Costs Notes: 1. Comision 2010 1 2 3 4 5 6 7 8 9 10 Description (required) 650 600 500 1 98,400 1 Quantity S.Y. 9,000 23,000 14,000 3,600 80 80 80 70,000 5,000 9,000 Area Type tons feet tons each square feet each Units (select type) Rip-Rap 18 in min thick, Rip-Rap 18 in min thick, Rip-Rap 18 in min thick, Rip-Rap 18 in min thick, Rip-Rap 3/8 to 1/4 C.Y. p Rip-Rap 3/8 to 1/4 C.Y. p Rip-Rap 3/8 to 1/4 C.Y. p Rip-Rap 18 in min thick, Rip-Rap 3/8 to 1/4 C.Y. p Rip-Rap 18 in min thick, Input Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 10.00 25,000.00 0.01 30,000.00 $64,234 5.00 ($) Equipment Unit Cost $158,490 405030 246540 63396 934 934 934 1232700 58350 158490 $2,325,798 $0 $0 $0 $0 $1,124 $1,124 $1,124 $0 $70,250 $0 $73,622 Material Cost $ 143 25 143 65,000 2 120,000 $520,581 ($) Material Unit Cost Costs Equipment Cost $ Page 3 of 3 1.50 7.50 3.00 27,000.00 1.00 45,000.00 $177,375 ($) Labor Unit Cost $341,730 873310 531580 136692 2013 2013 2013 2657900 125800 341730 $5,014,781 Labor Cost $ Bond Calculation Misc. Costs $96,850 $19,500 $78,000 $117,000 $255,840 $195,000 $762,190 Total Cost $ $500,220 $1,278,340 $778,120 $200,088 $4,071 $4,071 $4,071 $3,890,600 $254,400 $500,220 $7,414,201 Total Cost $ Misc. Costs $302.50 Labor $78.00 $/acres Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. Hrs/Day Days/Year Page 1 of 4 Number of Years Rate Notes: 1) Surface area is NOT the same as footprint disturbance area typically used for permitting purposes. Reclamation Monitoring Description 1/17/2011 569.77 $/acres Seed $254,972 $561,835 $816,807 $702,612 $1,519,419 Totals $67.00 $/acres Equipment $ Totals Monitoring $254,972 Mix 1 acres Area Requiring Reseeding $172,355 $366,600 $538,955 $172,355 Subtotal 100% (select) Seed Mix $38,175 $12,043 $50,218 $68,726 $118,944 $44,442 $38,175 $172,355 $447.50 569.77 acres % Area Requiring Reseeding $44,442 $549,792 $594,234 $267,286 $861,520 Equipment Labor Equipment Materials Cost/Acre Revegetation Maintenance Description Total Revegetation Surface Area (1) Reclamation Maintenance Revegetation Maintenance Reclamation Monitoring Subtotal Reclamation Monitoring Water Quality Monitoring TOTAL MONITORING Labor Reclamation Monitoring & Maintenance - Cost Summary Materials/ Laboratory Bond Calculation Monitoring Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Subtotal Notes: Subtotal 8 Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Field Tech/Sampler Pickup Truck Pump (purchased) Description Field work 2 1 1 No. of staff Ground & Surface Water Monitoring Travel hr Hrs/Trip Range Scientist Travel 8 8 Field Geologist/Engineer Reporting 8 8 Field Geologist/Engineer Range Scientist Field Work 20 8 Hrs/Day 4 Trips/Year 4 4 20 15 $95 $95 $95 $95 4 Events/Year $25.09 $/hr Truck Cost Page 2 of 4 4 Days/event 15 Years 15 15 15 $/hr Bond Calculation Monitoring Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 15 15 No. Years $63.64 $17.34 $2,140 Rate $/hr Subtotal Field Work 256 256 Man-hours/ year Total Reclamation Monitoring $229,080 Monitoring $313,104 $244,378 $66,586 $2,140 Cost $ $561,835 $12,043 $12,043 $549,792 $45,816 $45,816 $229,080 Notes: Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Field Geologist/Engineer Description Reporting Water Analysis (Profile I) (1) ABA + S speciation WAD Cyanide in water Leach Test (MWMP) w/ analysis Description 4 Hrs/Event 15 4 2 2 # Samples Water and Rock Sample Analysis $95.45 $/hr Rate 4 4 12 2 Events/Year 16 Man-hours/ year $325.00 $125.00 $35.00 $395.00 $/sample Analysis Cost Page 3 of 4 4 Events/Year 15 15 15 15 No. Years Bond Calculation Monitoring Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 15 No. Years $4,500.00 $1,200.00 $1,800.00 $300.00 $ Material Cost Subtotal Reporting Subotal Sample Analysis $292,500.00 $30,000.00 $12,600.00 $23,700.00 $ Lab Cost Total Water Quality Monitoring $5.00 $5.00 $5.00 $5.00 $/sample Supplies Monitoring $702,612 $22,908 $22,908 $ Cost $366,600 $297,000 $31,200 $14,400 $24,000 $ Cost Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 Page 4 of 4 Bond Calculation Monitoring Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Monitoring 12.00 180.00 Duration mo. Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 180.00 180.00 Duration mo. 1 1 Number of Units 120 120 Hours/ Month hr. $224,100 $1,999,332 $1,775,232 Labor 5 1 Number of Supervisors $499,392 $356,609 $423,727 $1,279,728 Equipment Rental Rate $/mo Page 1 of 2 $149 $176 $62 $62 Supervisor Rate $/hr $7,500 $7,500 N/A Materials Notes: Office rental assumes only 1 generator required for every 4 trailers Total Support Temporary Office Rental Temporary Toilets Description Construction Management Support Total Staff Active Reclamation Monitoring & Maintenance Description Construction Management Staff Construction Management Construction Management Construction Support Road Maintenance TOTAL CONSTRUCTION MANAGEMENT Construction Management & Road Maintenance - Cost Summary Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Bond Calculation Constr. Mgmt $356,609 $324,929 $31,680 Equipment Cost(1) $ $499,392 $124,848 $374,544 Equipment Cost(1) $ Total Construction Management $1,656 Generator Cost $/mo $1,775,232 $443,808 $1,331,424 Labor Cost $ $2,274,624 $356,609 $655,327 $3,286,560 Totals Constr. Mgmt $2,631,233 $356,609 $324,929 $31,680 Totals $ $2,274,624 $568,656 $1,705,968 Totals $ Copyright © 2004 - 2008 - SRCE Software . All Rights Reserved. 1/17/2011 5000 Small Small Gallons/ Day (select) Small Small Fleet Size (select) 25 Days/ Month 1.00 1.00 1.00 1.00 Number Notes: 1) Supervisor equipment = pickup truck Total Project Maintenance Water Fees Water Fees Description Water Truck Grader Monitoring & Maintenance Water Truck Grader Active Reclamation Description Road Maintenance Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Page 2 of 2 6.0 Duration mo. 180.0 180.0 12.0 12.0 Duration mo. $0.010 8 8 Cost/ Gallon $ 60 60 Hours/ Month hr. Bond Calculation Constr. Mgmt $224,100 $64,512 $84,888 $32,256 $42,444 Labor Cost $ $423,727 $121,896 $160,589 $60,948 $80,294 Equipment Cost $ Constr. Mgmt $655,327 $7,500 Totals $ $186,408 $245,477 $93,204 $122,738 Totals $ Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Color Code Key User Input - Direct Input User Input - Pull Down List Standardized Data (imported from data file) Program Calculated Value Direct Input Pull Down Selection Standardized Data Locked Cell - Formula or Reference ZONE ADJUSTMENTS Cost Basis/Project Region Northern Nevada Power Equipment Operators Truck Drivers Laborers 151 to 300 miles 151 to 300 miles < 50 miles Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Counties $3.00 $3.00 $0.00 INDIRECT COSTS FICA/Medicare (%) Unemployment (%) Workman's Compensation (%) 7.65% 3.00% 9.77% HOURLY LABOR RATE TABLE EQUIPMENT TYPE (1) OR JOB DESCRIPTION Davis-Bacon Group Base Rate ($/hr) Fringe ($/hr) Zone Adjustment ($/hr) Hourly Wage ($/hr) FICA/ Medicare ($/hr) Unemploym Workman's ent Comp ($/hr) ($/hr) Total ($/hr) EQUIPMENT OPERATORS ($/hr) (2) Bulldozers D6R D7R D8R D9R D10R D11R Group 8 Group 8 Group 8 Group 8 Group 8 Group 8 $29.55 $29.55 $29.55 $29.55 $29.55 $29.55 $15.54 $15.54 $15.54 $15.54 $15.54 $15.54 $3.00 $3.00 $3.00 $3.00 $3.00 $3.00 $48.09 $48.09 $48.09 $48.09 $48.09 $48.09 $3.68 $3.68 $3.68 $3.68 $3.68 $3.68 $1.44 $1.44 $1.44 $1.44 $1.44 $1.44 $4.70 $4.70 $4.70 $4.70 $4.70 $4.70 $57.91 $57.91 $57.91 $57.91 $57.91 $57.91 Group 10A Group 10A $30.41 $30.41 $15.54 $15.54 $3.00 $3.00 $48.95 $48.95 $3.74 $3.74 $1.47 $1.47 $4.78 $4.78 $58.95 $58.95 Group 11 Group 11 Group 11 Group 11 $30.65 $30.65 $30.65 $30.65 $15.54 $15.54 $15.54 $15.54 $3.00 $3.00 $3.00 $3.00 $49.19 $49.19 $49.19 $49.19 $3.76 $3.76 $3.76 $3.76 $1.48 $1.48 $1.48 $1.48 $4.81 $4.81 $4.81 $4.81 $59.23 $59.23 $59.23 $59.23 Group 10 Group 11 $30.22 $30.65 $15.54 $15.54 $3.00 $3.00 $48.76 $49.19 $3.73 $3.76 $1.46 $1.48 $4.76 $4.81 $58.72 $59.23 Group 10 Group 11 Group 11 Group 11 Group 11A $30.22 $30.65 $30.65 $30.65 $32.29 $15.54 $15.54 $15.54 $15.54 $15.54 $3.00 $3.00 $3.00 $3.00 $3.00 $48.76 $49.19 $49.19 $49.19 $50.83 $3.73 $3.76 $3.76 $3.76 $3.89 $1.46 $1.48 $1.48 $1.48 $1.52 $4.76 $4.81 $4.81 $4.81 $4.97 $58.72 $59.23 $59.23 $59.23 $61.21 Group 10A Group 6 $30.41 $28.71 $15.54 $15.54 $3.00 $3.00 $48.95 $47.25 $3.74 $3.61 $1.47 $1.42 $4.78 $4.62 $58.95 $56.90 Group 3 Group 9 Group 10 Group 10 $27.50 $29.87 $30.22 $30.22 $15.54 $15.54 $15.54 $15.54 $3.00 $3.00 $3.00 $3.00 $46.04 $48.41 $48.76 $48.76 $3.52 $3.70 $3.73 $3.73 $1.38 $1.45 $1.46 $1.46 $4.50 $4.73 $4.76 $4.76 $55.44 $58.30 $58.72 $58.72 Motor Graders 14G/H 16G/H Track Excavators 320C 325C 345B 385BL Scrapers 631G 637G PP Wheeled Loaders 928G 966G 972G 988G 992G Hydrauilc Hammers H-120 (fits 325) H-160 (fits 345) H-180 (fits 365/385) Other Equipment 420D 4WD Backhoe CS563E Vibratory Roller Light Truck - 1.5 Ton Supervisor's Truck Air Compressor + tools Welding Equipment Heavy Duty Drill Rig Pump (plugging) Drill Rig 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Color Code Key User Input - Direct Input User Input - Pull Down List Standardized Data (imported from data file) Program Calculated Value Direct Input Pull Down Selection Standardized Data Locked Cell - Formula or Reference ZONE ADJUSTMENTS Cost Basis/Project Region Northern Nevada Power Equipment Operators Truck Drivers Laborers 151 to 300 miles 151 to 300 miles < 50 miles Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Counties $3.00 $3.00 $0.00 INDIRECT COSTS FICA/Medicare (%) Unemployment (%) Workman's Compensation (%) 7.65% 3.00% 9.77% Concrete Pump Gas Engine Vibrator Generator 5KW HDEP Welder (pipe or liner) 5 Ton Crane Truck 25 Ton Crane Group 6 $28.71 $15.54 $3.00 $47.25 $3.61 $1.42 $4.62 $56.90 Group 10A Group 11 $30.41 $30.65 $15.54 $15.54 $3.00 $3.00 $48.95 $49.19 $3.74 $3.76 $1.47 $1.48 $4.78 $4.81 $58.95 $59.23 $22.85 $24.29 $22.26 $22.26 $22.26 $11.94 $11.94 $11.94 $11.94 $11.94 $3.00 $3.00 $3.00 $3.00 $3.00 $37.79 $39.23 $37.20 $37.20 $37.20 $2.89 $3.00 $2.85 $2.85 $2.85 $1.13 $1.18 $1.12 $1.12 $1.12 $3.69 $3.83 $3.63 $3.63 $3.63 $45.51 $47.24 $44.80 $44.80 $44.80 $21.25 $21.75 $21.50 $21.35 $21.50 $27.54 $6.87 $6.87 $6.87 $6.87 $6.87 $6.87 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $28.12 $28.62 $28.37 $28.22 $28.37 $34.41 $2.15 $2.19 $2.17 $2.16 $2.17 $2.63 $0.84 $0.86 $0.85 $0.85 $0.85 $1.03 $2.75 $2.80 $2.77 $2.76 $2.77 $3.36 $33.86 $34.46 $34.16 $33.98 $34.16 $41.44 $51.19 $47.25 $3.92 $3.61 $1.54 $1.42 $5.00 $4.62 $61.64 $56.90 $95.45 $63.64 $95.45 NOTES: (1) Equipment Type: Catepillar model or equivalent (2) Equipment Operator Source: D-B ENGI0003-35 07/01/2008 (3) Zone Basis: From Washoe Co. Courthouse TRUCK DRIVERS ($/hr) (4) 769D 777D 613E (5,000 gal) Water Wagon 621E (8,000 gal) Water Wagon Dump Truck (10-12 yd3 ) Truck Driver > 25 yds < Truck Driver > 60 yds < ter Truck > 2,500 gall ter Truck > 2,500 gall Truck Driver > 8 yds < NOTES: (4) Truck Driver Source: D-B TEAM0533-002 12/01/2007 (5) Zone Basis: From Washoe Co. Courthouse LABORERS ($/hr) (6,7) General Laborer Skilled Laborer Driller's Helper Rodmen (reinforcing concrete) Cement finisher Carpenter Group 1 Group 4 Group 3 Group 2 Group 3 NOTES: (6) Laborer Source: D-B LABO0169-021 10/01/2006 (7) Carpenter Source: D-B CARP0971-010 07/01/2009 (8) Zone Basis: From Washoe Co. Courthouse PROJECT MANAGEMENT AND TECHNICAL LABOR ($/hr) (9) Project Manager Foreman Field Geologist/Engineer Field Tech/Sampler Range Scientist 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. $51.19 $47.25 $95.45 $63.64 $95.45 2 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Color Code Key User Input - Direct Input User Input - Pull Down List Standardized Data (imported from data file) Program Calculated Value Direct Input Pull Down Selection Standardized Data Locked Cell - Formula or Reference ZONE ADJUSTMENTS Cost Basis/Project Region Northern Nevada Power Equipment Operators Truck Drivers Laborers 151 to 300 miles 151 to 300 miles < 50 miles Churchill, Douglas, Elko, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, Washoe, and White Pine Counties $3.00 $3.00 $0.00 INDIRECT COSTS FICA/Medicare (%) Unemployment (%) Workman's Compensation (%) 7.65% 3.00% 9.77% NOTES: (9) Project Manager: R.S.Means 2009 (01300-700-0200 Total Incl (9) Foreman Source: R.S.Means 2009 (01300-700-0260 Total Incl (9) Techical Labor Source: SRK Consulting (Total Incl. O&P-10%) 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 3 Labor Rates Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Monthly Rental Basis: 176 hrs month EQUIPMENT RENTAL RATE TABLE EQUIPMENT TYPE (1) Monthly Rental Rate Equipment Hourly Rate Fuel/Lube/ Wear Total Rate Bulldozers D6R $9,895 $56.22 $22.64 $78.86 D7R D8R D9R D10R D11R $13,855 $17,820 $21,725 $28,050 $54,000 $78.72 $101.25 $123.44 $159.38 $306.82 $28.80 $36.31 $52.25 $67.54 $97.58 $107.52 $137.56 $175.69 $226.92 $404.40 $12,430 $18,425 $70.63 $104.69 $40.90 $49.93 $111.52 $154.62 $7,240 $7,885 $10,800 $22,140 $41.14 $44.80 $61.36 $125.80 $19.45 $24.47 $36.37 $58.77 $60.59 $69.27 $97.73 $184.57 $23,460 $32,140 $133.30 $182.61 $62.18 $87.40 $195.47 $270.01 Motor Graders 14G/H 16G/H Track Excavators 320C 325C 345B 385BL Scrapers 631G 637G PP Wheeled Loaders 928G $5,495 $31.22 $19.87 $51.09 966G 972G 988G 992G $10,890 $11,990 $20,350 $42,300 $61.88 $68.13 $115.63 $240.34 $35.56 $37.33 $60.76 $121.50 $97.43 $105.45 $176.38 $361.85 $4,840 $8,100 $10,100 $27.50 $46.02 $57.39 $3.11 $6.85 $8.11 $30.61 $52.87 $65.50 $3,045 $9,618 $4,000 $2,636 $3,935 $2,761 $17.30 $54.65 $22.73 $14.98 $22.36 $15.69 $13.90 $8.26 $2.36 $2.36 $0.00 $0.00 $31.21 $62.91 $25.09 $17.34 $22.36 $15.69 $57,090 $57,090 $15,224 $534 $825 $4,110 $3,986 $16,236 $324.38 $324.38 $86.50 $3.04 $4.69 $23.35 $22.65 $92.25 $0.00 $0.00 $4.72 $4.72 $4.72 $0.00 $7.08 $7.08 $324.38 $324.38 $91.22 $7.76 $9.41 $23.35 $29.73 $99.33 $14,000 $28,000 $9,235 $14,575 $10,978 $79.55 $159.09 $52.47 $82.81 $62.38 $37.74 $70.38 $32.17 $32.53 $37.74 $117.29 $229.47 $84.65 $115.34 $100.12 Hydrauilc Hammers H-120 (fits 325) H-160 (fits 345) H-180 (fits 365/385) Other Equipment 420D 4WD Backhoe CS563E Vibratory Roller Light Truck - 1.5 Ton Supervisor's Truck Air Compressor + tools Welding Equipment Heavy Duty Drill Rig Pump (plugging) Drill Rig Concrete Pump Gas Engine Vibrator Generator 5KW HDEP Welder (pipe or liner) 5 Ton Crane Truck 25 Ton Crane Trucks 769D 777D 613E (5,000 gal) Water Wagon 621E (8,000 gal) Water Wagon Dump Truck (10-12 yd3 ) NOTES: (1) Power Equipment Source: 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Cashman Equipment Company (July 2009) unless noted 1 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls (2) Power Equipment Type: Catepillar model or equivalent (3) Drilliing Equipment Source: Means Heavy Construction (2009) (4) Other Equipment Source: Means Heavy Construction (2009) (5) Drill rig includes support (pipe) truck 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls FUEL, LUBE AND WEAR CALCULATIONS EQUIPMENT TYPE Bulldozers D6R D7R D8R D9R D10R D11R PM Cost Per Hour(1) Under carriage or Tires (2) $4.98 $5.03 $5.48 $6.46 $8.08 $9.80 G.E.T Consumption Fuel Use Rate gal/hr Cost@ $2.36/gal Total Hourly Equipment $4.09 $6.07 $7.82 $12.16 $16.98 $25.24 5.75 7.50 9.75 14.25 18.00 26.50 $13.57 $17.70 $23.01 $33.63 $42.48 $62.54 $22.64 $28.80 $36.31 $52.25 $67.54 $97.58 $12.17 $16.63 6.25 7.50 $14.75 $17.70 $40.90 $49.93 $3.71 $4.67 $5.91 $10.77 4.90 6.60 10.60 17.50 $11.56 $15.58 $25.02 $41.30 $19.45 $24.47 $36.37 $58.77 Motor Graders 14G/H 16G/H $5.24 $5.09 $8.74 $10.51 Track Excavators 320C 325C 345B 385 BL $4.18 $4.22 $5.44 $6.70 Scrapers 631G 637G PP $6.24 $9.10 $13.83 $13.83 $6.71 $8.42 15.00 23.75 $35.40 $56.05 $62.18 $87.40 $3.92 $4.95 $4.71 $7.65 $11.09 $4.05 $8.54 $8.54 $14.47 $28.90 $3.64 $8.50 $9.33 $11.50 $27.23 3.50 5.75 6.25 11.50 23.00 $8.26 $13.57 $14.75 $27.14 $54.28 $19.87 $35.56 $37.33 $60.76 $121.50 $0.00 $0.00 $0.00 $3.11 $6.85 $8.11 $13.90 $8.26 $2.36 $2.36 $0.00 $0.00 $0.00 $0.00 $4.72 $4.72 $4.72 $0.00 $7.08 $7.08 $37.74 $70.38 $32.17 $32.53 $37.74 Wheeled Loaders 928G 966G 972G 988G 992G Hydrauilc Hammers H-120 (fits 325 H-160 (fits 345) H-180 (fits 365/385) N/A N/A N/A $3.11 $6.85 $8.11 Other Equipment 420D 4WD Backhoe CS563E Vibratory Roller Light Truck - 1.5 Ton Supervisor's Truck Air Compressor + tools Welding Equipment Heavy Duty Drill Rig Pump (plugging) Drill Rig Concrete Pump Gas Engine Vibrator Generator 5KW HDEP Welder (pipe or liner) 5 Ton Crane Truck 25 Ton Crane $2.88 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A $1.08 $0.00 $0.00 $0.00 $2.86 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.00 3.50 1.00 1.00 3.00 3.00 $7.08 $8.26 $2.36 $2.36 $0.00 $0.00 $0.00 $0.00 $4.72 $4.72 $4.72 $0.00 $7.08 $7.08 $2.67 $3.56 N/A N/A $2.67 9.25 17.00 10.75 9.25 9.25 $21.83 $40.12 $25.37 $21.83 $21.83 2.00 2.00 2.00 Trucks 769D 777D 613E (5,000 gal) Water Wagon 621E (8,000 gal) Water Wagon Dump Truck (10-12 yd3 ) Notes: (1) PM Source: (2) Undercarriage Source: (3) G.E.T. Source: (4) Fuel Use Source: 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. $6.79 $10.42 $4.16 $5.47 $6.79 $6.45 $16.28 $2.64 $5.23 $6.45 July 2009 Cashman Equipment Rental Rate, Elko, NV (except as noted) Purcell Tire. 07/16/2009 CAT Historical Data Caterpillar Handbook, Edition 35, Ch. 20; or estimated average for smaller vehicles 3 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls TIRE COST TABLES Equipment Bulldozers Tire Size # of Tires Per Cost Tire Cost Life Tire Cost per N/A N/A N/A N/A N/A N/A D6R D7R D8R D9R D10R D11R Motor Graders 20.5R25 23.5R25 14G/H 16G/H 6 6 $5,095.71 $6,131.43 $30,574.29 $36,788.57 3,500 3,500 $8.74 $10.51 Track Excavators N/A N/A N/A N/A 320C 325C 345B 385 BL Scrapers 631G 637G PP 37.25R35 37.25R35 4 4 $13,825.71 $13,825.71 $55,302.86 $55,302.86 4,000 4,000 $13.83 $13.83 17.5R25 26.5R25 26.5R25 35/65-33 45/65R45 4 4 4 4 4 $4,554.29 $9,607.14 $9,607.14 $16,275.71 $32,517.14 $18,217.16 $38,428.56 $38,428.56 $65,102.84 $130,068.56 4,500 4,500 4,500 4,500 4,500 $4.05 $8.54 $8.54 $14.47 $28.90 $3,254.28 3,000 $1.08 $38,717.16 $81,394.26 $15,868.56 $41,811.44 $38,717.16 6,000 5,000 6,000 8,000 6,000 $6.45 $16.28 $2.64 $5.23 $6.45 Wheeled Loaders 928G 966G 972G 988G 992G Hydrauilc Hammers N/A N/A N/A H-120 (fits 325 H-160 (fits 345) H-180 (fits 365/385) Other Equipment 420D 4WD Backhoe CS563E Vibratory Roller Light Truck - 1.5 Ton Supervisor's Truck Air Compressor + tools Welding Equipment Heavy Duty Drill Rig Pump (plugging) Drill Rig Concrete Pump Gas Engine Vibrator Generator 5KW HDEP Welder (pipe or liner) 5 Ton Crane Truck 25 Ton Crane 340/80R18-195LR24 2+2 $1,627.14 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Trucks 769D 777D 613E (5,000 gal) Water Wagon 621E (8,000 gal) Water Wagon Dump Truck (10-12 yd3 ) Notes: (1) Unit Cost Basis: (2) Cost Basis: (3) Tire Cost Source: 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 18.00R33 27.00R49 23.5R25 33.25R29 6 6 4 4 6 $6,452.86 $13,565.71 $3,967.14 $10,452.86 $6,452.86 Cost per set Total cost for all required tires. Purcell Tire. 07/16/2009 5 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls (4) Tire Wear Source: 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Caterpillar Handbook, Edition 35; Ch. 20 6 of 6 Equipment Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Revegetation Materials Seed Mixes Seed Mix Description None Mix 1 Mix 2 Mix 3 Mix 4 User Mix 1 User Mix 2 User Mix 3 User Mix 4 User Mix 5 (from Seed Mix sheet) Notes: Cost/Acre Basins Low Hills Uplands Riparian or Custom Lowlands Low Hills Uplands Riparian Cost/lb #DIV/0! $302.50 $332.75 $363.00 $393.25 $217.00 lbs/Acre 0 Cost/Acre $0.00 Cost/lb lbs/Acre Cost/Acre $0.11 $0.27 2000 50 550 Mulch Item None Straw Mulch Hydro Mulch $220.00 $13.50 Notes: Straw Specialties $8.00 per bale, certified (July 2009) Granite Seed $13.00 per 50# bag Wood (Hydro) Mulch (June 2009) Amendments Item None Organic Matter Treated Sludge 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. Cost/lb lbs/Acre $0.70 2000 3000 1 of 3 Cost/Acre $1,400.00 Material Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Chemical $0.32 100 1000 $32.00 Notes: Granite Seed $35.00 per 50 # bag Biosol Mix (June 2009) Western Nevada Supply $16.00 per 50 # bag 16/20/0 (June 2009) Well Abandonment Materials Description Cement Grout (Low Grade Bentonite) Inert Material/Cuttings Units Cost/unit cy cy cy $292.09 $65.60 $0.00 (1) Ferguson Enterprises, Inc. quote (June 2009) Type I,II Cement at $11.90 (2) Ferguson Enterprises, Inc. (June 2009) Abandonite grout at $12.70 per Monitoring Costs Description Units Cost/unit Monitor Well Pump Sampling Supplies ea. ea. $2,140.00 $5.00 Water Analysis (Profile I) (1) Leach Test (MWMP) w/ analysis ABA + S speciation WAD Cyanide in water Water Analysis (Profile II) (1) ea. ea. ea. ea. ea. $325.00 $395.00 $125.00 $35.00 $375.00 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 3 Material Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 3 Material Costs Means Number Unit acres acres Crew Direct Input Pull Down Selection Standardized Data Locked Cell - Formula or Reference 365 365 365 260 Daily Output Materials $0.74 $1.04 Labor $78.00 Block 4 in (10 cm) thick Block 6 in (15 cm) thick Block 8 in (20 cm) thick Block 12 in (30 cm) thick Conc 6 in (15 cm) thick Conc 8 in (20 cm) thick Conc 10 in (25 cm) thick Conc 12 in (30 cm) thick Lg. steel Lg. concrete Lg. masonry Lg. mixed Sm. steel Sm. concrete Sm. masonry Sm. wood 02220-130-2000 02220-130-2040 02220-130-2080 02220-130-2100 02220-130-2400 02220-130-2420 02220-130-2440 02220-130-2500 02220-110-0012 02220-110-0050 02220-110-0080 02220-110-0100 02220-110-0500 02220-110-0600 02220-110-0650 02220-110-0700 S.F. S.F. S.F. S.F. S.F. S.F. S.F. S.F. C.F. C.F. C.F. C.F. C.F. C.F. C.F. C.F. 1 Clab 1 Clab 1 Clab 1 Clab B-9 B-9 B-9 B-9 B-8 B-8 B-8 B-8 B-3 B-3 B-3 B-3 180 170 150 150 160 140 120 100 21500 15300 20100 20100 14800 11300 14800 14800 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Unit rates from Means Heavy Construction 2006 Edition by permission of R.S.Means/Reed Construction Data . Waste Disposal Wall Demolition Building Demolition All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily Means Number Unit Crew Output 1 of 4 $1.50 $1.59 $1.81 $1.81 $12.39 $14.16 $16.52 $19.82 $0.12 $0.17 $0.13 $0.13 $0.15 $0.19 $0.15 $0.15 Labor $0.00 $0.00 $0.00 $0.00 $1.99 $2.27 $2.65 $3.18 $0.12 $0.17 $0.13 $0.13 $0.15 $0.19 $0.15 $0.15 Equipment $0.00 $0.00 Equipment $67.00 Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . Building and Wall Demolition Seeding - Broadcast Mechanical (1) Seeding - Drill (1) Seeding - Hydroseeding (1) Shrub Planting - bare root 6-10 in (15- 25cm) (2) ea. 1 Clab 02910-400-0561 Tree Planting - bare root 11-16 in (27- 40cm) (3) ea. 1 Clab 02910-400-0562 Cactus Planting (4) ea. 1 Clab NOTES: (1) Seeding Source: SlaterSeeding (July 2007) adjusted to 2009 (2) Shrub Source: (3) Tree Source: (4) Cactus Source: Revegetation User Input - Direct Input User Input - Pull Down List Standardized Data (imported from data file) Program Calculated Value Color Code Key Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls 20% 20% 20% 20% 10% 10% 10% 10% Premium $1.80 $1.91 $2.17 $2.17 $15.82 $18.07 $21.09 $25.30 $0.24 $0.34 $0.26 $0.26 $0.30 $0.38 $0.30 $0.30 Total Total $145.00 $0.00 $0.00 $0.74 $1.04 $0.00 Misc. Unit Costs assumes vertical reinforcing rods included (20% premium) assumes vertical reinforcing rods included (20% premium) assumes vertical reinforcing rods included (20% premium) assumes vertical reinforcing rods included (20% premium) assumes average reinforcing (10% premium) assumes average reinforcing (10% premium) assumes average reinforcing (10% premium) assumes average reinforcing (10% premium) Notes Notes ea. ea. ea. ton 2009 Means Heavy Construction 2009 Means Heavy Construction 02220-350-0910 02220-350-0920 02220-350-0940 02220-350-0950 Unit Crew Daily Output 03310-240-4300 03310-240-4350 03310-240-2700 03310-240-2750 ea. ea. ea./C.Y. ea./C.Y. C.Y. C.Y. C.Y. C.Y. C-14D C-14D C-14B C-14B 0.5 1 0.5 0.5 80.02 26.2 20.59 28.36 $2,518.31 $5,036.62 $251.83 $251.83 $175.00 $175.00 $320.00 $315.00 $/ea. $2,520.40 $1,849.70 $2,533.40 $2,533.40 $102.93 $314.37 $407.50 $295.85 $11.63 $35.52 $45.19 $32.81 $/ea. $815.60 $719.90 $1,126.00 $1,126.00 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 4 Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily Misc. Linear Projects 1/17/2011 Premium $289.56 $524.89 $772.69 $643.66 Total $13.04 $112.00 $152.00 $261.00 $205.00 $332.00 $4.39 $261.00 $43.50 $128.00 $43.50 $43.50 Total $102.00 Equipment Premium $13.04 Labor Equipment NOTES: (5) Bat Gate Source: NV BLM, 2/2006: 8 hr + 1hr mob/demob + 1hr setup per gate (adjusted to 2009) (6) Foam Plug Source: NV BLM, 2/2006: 8 hr + 1hr mob/demob + 1hr setup per adit; 16 hrs per production opening (adjusted to 2009) Bat Gate (5) Culvert Gate (5) Adit Foam Plug (6) Production Opening Foam Plug (6) Bat Gate/Foam Plug Installation Grade walls - 15 in (40 cm) thick, 8 ft ( 2.5 m) high Grade walls - 15 in ( 40 cm) thick, 12 ft (3.7 m) high Elevated conc, 1-way beam & slab - 15ft (4.6m) span Elevated conc, 1-way beam & slab - 25ft (7.5m) span Reinforced Concrete Bulkheads and Shaft Covers Labor $102.00 $112.00 $152.00 $261.00 $205.00 $332.00 $4.39 $261.00 $43.50 $128.00 $43.50 $43.50 Materials Weekly dumpster rental rates from Means Heavy Construction 2005 Edition with permission by R.S.Means/Reed Construction Data . Weekly dumpster rental rates include haul to off-site disposal site and disposal fees Daily Means Number Unit Crew Output Materials Concrete Structure Installation Insitu Biotreatment 02115-200-2020/2021 C.Y. HCS disposal fee 02115-200-2050/2055 C.Y. NOTES: Insitu Treatement Cost Source 2009 Means Heavy Construction HCS Disposal Fee Source: 2009 Means Heavy Construction Hydrocarbon Contaminated Soils (HCS) Vacuum Truck Pickup (2200 gal) 02110-300-3110 hr. Vacuum Truck Pickup (5000 gal) 02110-300-3120 hr. Dump site liquid disposal fee 02110-300-6000/6020 ton NOTES: Liquid Handling Cost Source 2009 Means Heavy Construction Liquid Disposal Fee Source: 2009 Means Heavy Construction Hazardous Material Handling - Liquids 02110-300-1100 ea. Pickup fees 55 gal. drums Bulk material (average) 02110-300-1220/1230 ton mile Transport - truck load (80 drums, 25 cy (m3), 18 tons) 02110-300-1260/1270 ton Dump site solid disposal fee 02110-300-6000/6020 NOTES: Solid Handling Cost Source 2009 Means Heavy Construction Solid Disposal Fee Source: 2009 Means Heavy Construction Hazardous Material Handling - Solids Dumpster Disposal Fee Source: Dumpster Cost Source Dumpster delivery (average for all sizes) Haul (average for all sizes) Rent per month (average for all sizes) Disposal fee per ton (tonne) (average for all sizes) NOTES: Rubbish Handling Means Number materials $/ea. Installed materials $/ea. Installed materials $/cy placed materials $/cy placed includes reinforcing includes reinforcing includes reinforcing includes reinforcing Notes Notes Misc. Unit Costs Backhoe work 02210-700-0120 02510-760-0100 02510-760-0200 02620-630-2100 02620-630-2110 02220-220-2960 02220-220-3000 02220-220-2900 02220-220-2930 02220-220-2960 02220-220-3000 02220-220-1600 extrapolated 02220-220-1650 02220-220-1700 02220-220-1775 user user user user 02820-170-1650 extrapolated 02820-130-0920 02820-130-0920 02820-510-1240 user user user user Means Number mile mile ea. C.Y. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. L.F. Unit B-11M B-22A B-22A B-14 B-14 2 Clab 2 Clab B-6 B-6 B-6 B-6 2 Clab 2 Clab 2 Clab B-6 2 Clab B-80A B-80A B-80A B-80C B-80C B-80A Crew 28 400 380 315 300 1200 900 175 150 120 90 430 355 280 445 430 760 570 456 180 150 Output $16.84 $4.36 $4.59 $6.38 $6.70 $0.45 $0.60 $5.78 $6.74 $8.43 $11.24 $1.26 $1.53 $1.93 $2.27 $1.26 $1.07 $1.43 $1.78 $4.51 $5.42 Labor $8.92 $2.10 $2.21 $1.43 $1.50 $0.17 $0.22 $2.34 $2.72 $3.41 $4.54 $0.47 $0.57 $0.72 $0.92 $0.47 $0.26 $0.35 $0.44 $1.12 $1.34 Equipment Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Rip-Rap 3/8 to 1/4 C.Y. pieces, grouted Rip-Rap 18 in min thick, no grout Gabions, 6 in (15 cm) deep Gabions, 12 in (30 cm) deep Gabions, 18 in (45 cm) deep Rip-Rap & Rock Lining 02370-450-0110 02370-450-0200 02370-450-0400 02370-450-0200 02370-450-0200 S.Y. S.Y. S.Y. S.Y. S.Y. B-13 B-13 B-13 B-13 B-13 80 53 200 153 102 3 of 4 $4.92 $7.73 $10.70 $14.05 $25.16 $37.97 $10.06 $13.15 $19.73 $11.67 $17.61 $4.67 $6.10 $9.15 Hourly productivity rates and crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . All equipment, labor and material unit costs are from Labor Costs, Equipment Costs and Material Costs spreadsheets Daily Means Number Unit Crew Output Materials Labor Equipment Erosion and Sedimentation Control $3.12 $9.15 $0.94 $1.75 $0.48 $1.56 $0.45 $0.60 $0.75 $38.00 $11.15 Materials NOTES: (7) Single Pole Source: NVEnergy estimate (2009) (8) Double Pole Source: NVEnergy estimate (2009) (9) Transformer Source: Sierra Pacific Power Company estimate (2004) adjusted to 2009 Single Pole Double Pole Transformer (9) Powerline and Transformer Removal Misc. Water 4in (10cm ) 40ft (12m) length, welded HDPE Water 6in (15cm) 40ft (12m) length, welded HDPE Drain 4in (10cm) perforated PVC Drain 6in (15cm) perforated PVC Drain 4in (10cm) corrugated, perf or plain Drain 6in (15cm) corrugated., perf or plain Pipe and Drainpipe Installation 12 in (30 cm ) Diameter 18 in (45 cm) Diameter 24 in (60 cm) Diameter 36 in (1m) Diameter Pipeline and Culvert Removal Barbed 3-strand Removal Barbed 4-strand Removal Barbed 5-strand Removal Chain link 8-10 ft (2.5-3 m) Removal Wood, all types 4-6 ft ("1.5-2 m) high - Removal Fencing Removal Barbed 3-strand Barbed 4-strand Barbed 5-strand Chain link 8-10ft (2.5-3m) Install Wood stockade fence 6 ft (2 m) high - Install Fencing Installation Premium Premium $50.88 $55.58 $19.65 $26.98 $39.58 Total $35,000.00 $40,000.00 $19,500.00 $25.76 $9.58 $15.95 $8.75 $9.95 $1.10 $2.38 $8.12 $9.46 $11.84 $15.78 $0.00 $0.00 $0.00 $1.73 $2.10 $2.65 $3.19 $1.73 $1.78 $2.38 $2.97 $43.63 $17.91 $0.00 $0.00 $0.00 $0.00 Total assumes on-site source of rip-rap assumes on-site source of rip-rap assumes on-site source rock fill for gabions assumes on-site source rock fill for gabions assumes on-site source rock fill for gabions Notes Notes Misc. Unit Costs Submersible Line Shaft Pump Type TOTAL ft to pump ft to pump Measurement 0150-500-0250 1590-400-6410 2310-100-0100 2315-310-5080 2660-610-1200 02370-450-0200 L.F. L.F. Unit mo mo. S.F. S.F. S.F. S.Y. B-11L B-10Y 3 Skwk B-13 NOTES: (10) Pump Removal Source: WDC Exploration 12/2005 (adjusted to 2009) Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Pump Removal Pump and Casing Removal Office Trailer, Furnished, no hook-ups Toilet Portable, chemical Construction Management Support Finish grading large area Compaction - riding, vibrating roller - 12" lifts 60 mil HDPE TOTAL HDEP Liner Installation Gabions, 36 in (1m) deep 2,000 3,500 1,600 60 4 of 4 $325.00 $149.00 $176.00 $0.70 $0.70 $12.30 $2.30 $5.37 Labor $0.00 $0.37 $0.21 $0.81 $1.39 $33.54 $5.01 $11.69 Equipment $0.00 $0.45 $0.14 $0.27 $0.86 $15.56 $7.31 $17.06 Total $325.00 $149.00 $176.00 $0.82 $0.35 $1.78 $2.95 Notes $61.40 assumes on-site source rock fill for gabions Misc. Unit Costs Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS RIPPING Rip road Waste rock dumps, heaps, tails - rip flat surfaces Surface preparation Scarify Small Dozer w/ multi-shank D7R Totals $107.52 $107.52 $57.91 $57.91 $165.43 $165.43 Totals $175.69 $175.69 $57.91 $57.91 $233.60 $233.60 Totals $226.92 $226.92 $57.91 $57.91 $284.83 $284.83 Totals $154.62 $154.62 $58.95 $58.95 $213.57 $213.57 Totals $107.52 $107.52 $57.91 $57.91 $165.43 $165.43 Totals $175.69 $175.69 $57.91 $57.91 $233.60 $233.60 Totals $226.92 $226.92 $57.91 $57.91 $284.83 $284.83 Medium Dozer w/ multi-shank D9R Large Dozer w/ multi-shank D10R Grader w/ multi-shank 16G/H GRADING Grading storage and structure areas Grading waste rock dumps and heaps Grading landfills Constructing pit safety berms Small Dozer Fleet D7R Medium Dozer Fleet D9R Large Dozer Fleet D10R EXPLORATION GRADING Backfilling and grading exploration trenches Grading flat exploration roads 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Small Dozer Fleet D6R Totals $78.86 $78.86 $57.91 $57.91 $136.77 $136.77 Totals $107.52 $107.52 $57.91 $57.91 $165.43 $165.43 Totals $137.56 $137.56 $57.91 $57.91 $195.47 $195.47 Totals $184.57 $184.57 $59.23 $59.23 $243.80 $243.80 Totals $97.73 $97.73 $59.23 $59.23 $156.96 $156.96 Totals $69.27 $69.27 $59.23 $59.23 $128.50 $128.50 $184.57 $226.92 $411.49 $59.23 $57.91 $117.14 $243.80 $284.83 $528.63 $97.73 $175.69 $59.23 $57.91 $156.96 $233.60 Medium Dozer Fleet D7R Large Dozer Fleet D8R EXCAVATING Earthen Berms Diversion ditch backfill Underground openings backfill - excavate and place Large Excavator 385BL Medium Excavator 345B Small Excavator 325C EXCAVATE AND RECONTOUR Recontour large roads (haul roads, access roads, etc.) Ponds - Excavate and pull liner and bury Excavation and grading for diversion and drainage control Large Excavator + Dozer 385BL D10R Totals Medium Excavator + Dozer 345B D9R 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 2 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Totals $273.42 $117.14 $390.56 $69.27 $107.52 $176.79 $59.23 $57.91 $117.14 $128.50 $165.43 $293.93 Totals $78.86 $78.86 $57.91 $57.91 $136.77 $136.77 Totals $137.56 $137.56 $57.91 $57.91 $195.47 $195.47 Totals $111.52 $111.52 $58.95 $58.95 $170.47 $170.47 Totals $60.59 $60.59 $59.23 $59.23 $119.82 $119.82 Totals $69.27 $69.27 $59.23 $59.23 $128.50 $128.50 $229.47 $361.85 $107.52 $698.84 $47.24 $61.21 $57.91 $166.36 $276.71 $423.06 $165.43 $865.20 Small Excavator + Dozer 325C D7R Total Equipment EXPLORATION ROAD/PAD RECONTOUR Recontour small roads (exploration roads, service roads, etc.) Cut and Fill reclamation on slopes Drill pad recountour Drill sump backfill Small Dozer D6R Large Dozer D8R Grader 14G/H Small Excavator 320C Medium Excavator 325C LOAD, HAUL AND PLACE MATERIAL Rock placement Haul overburden for backfill Haul borrow for backfill Haul cover or growth media Large Truck/Loader Fleet 777D 992G D7R Totals 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 3 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Small Truck/Loader Fleet 769D 988G D7R Totals $117.29 $176.38 $107.52 $401.19 $45.51 $59.23 $57.91 $162.65 $162.80 $235.61 $165.43 $563.84 Totals $195.47 $226.92 $107.52 $529.91 $58.72 $57.91 $57.91 $174.54 $254.19 $284.83 $165.43 $704.45 Totals $270.01 $107.52 $377.53 $59.23 $57.91 $117.14 $329.24 $165.43 $494.67 $69.27 $100.12 $169.39 $59.23 $44.80 $104.03 $128.50 $144.92 $273.42 $175.69 $97.43 $100.12 $373.24 $57.91 $59.23 $44.80 $161.94 $233.60 $156.66 $144.92 $535.18 $78.86 $97.43 $100.12 $276.41 $57.91 $59.23 $44.80 $161.94 $136.77 $156.66 $144.92 $438.35 Scraper/Dozer Fleet 631G D10R D7R Tandem Scraper Fleet 637G PP D7R MISC. LOAD AND HAUL AND EARTHWORKS Sludge removal Drainage controls Misc. - Cat 325B Excavator / 10-12 yd3 Truck 325C Dump Truck (10-12 yd3 ) Totals Misc. - Cat D9R Dozer/ Loader (5 yd3) / 10-12 yd3 Truck D9R 966G Dump Truck (10-12 yd3 ) Totals Misc. - Cat D6 Dozer / Cat 966 Loader / 10-12 yd3 Truck D6R 966G Dump Truck (10-12 yd3 ) Totals CONCRETE BREAKING Slab demolition Footing demolition Wall demolition 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 4 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Small - Cat 325B Excavator w/ H140D s Hammer 325C H-120 (fits 325) D9R $69.27 $30.61 $175.69 $275.57 $59.23 $0.00 $57.91 $117.14 $128.50 $30.61 $233.60 $392.71 $97.73 $52.87 $175.69 $326.29 $59.23 $0.00 $57.91 $117.14 $156.96 $52.87 $233.60 $443.43 Totals $184.57 $65.50 $175.69 $425.76 $59.23 $0.00 $57.91 $117.14 $243.80 $65.50 $233.60 $542.90 Totals $324.38 $0.00 $0.00 $324.38 $58.72 $34.16 $34.16 $127.04 $383.10 $34.16 $34.16 $451.42 $31.21 $0.00 $31.21 $58.95 $33.86 $92.81 $90.16 $33.86 $124.02 $324.38 $0.00 $0.00 $324.38 $58.72 $34.16 $34.16 $127.04 $383.10 $34.16 $34.16 $451.42 $84.65 $111.52 $196.17 $44.80 $58.95 $103.75 $129.45 $170.47 $299.92 Totals Medium - Cat 345B Excavator w/ H180D s Hammer 345B H-160 (fits 345) D9R Totals Large - Cat 385B Excavator w/ H180D s Hammer 385BL H-180 (fits 365/385) D9R DRILL HOLE ABANDONMENT Drill Hole - Grout or Cement Pump (plugging) Drill Rig Driller's Helper Driller's Helper Drill Hole - Inert Media (Means Crew B-11M+ 1 Laborer) 420D 4WD Backhoe General Laborer Totals Drill Hole - Casing Perforation or Removal Heavy Duty Drill Rig Driller's Helper Driller's Helper Totals MAINTENANCE FLEET Road Grading, Dust Suppression, Clean Up Maintenance - Small Water Truck and Cat 14G Grader 613E (5,000 gal) Water Wagon 14G/H Totals 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 5 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Maintenance - Large Water Truck and Cat 16G Grader 621E (8,000 gal) Water Wagon 16G/H Totals $115.34 $154.62 $269.96 $44.80 $58.95 $103.75 $160.14 $213.57 $373.71 Totals $17.34 $17.34 $0.00 $0.00 $17.34 $17.34 PROJECT SUPERVISION Supervisor's Truck MEANS CREW DEFINITIONS Crew composition from Means Heavy Construction 2005 Edition by permission of R.S.Means/Reed Construction Data . For use with misc. unit costs where Means is the source for productivity 1 Clab - Seedling Planting/Block Wall Demolition General Laborer $0.00 $0.00 Totals $33.86 $33.86 $33.86 $33.86 2 Clab - Barbed Wire/Wood Fence Removal, Corrugated Drainpipe Installation General Laborer General Laborer Light Truck - 1.5 Ton $0.00 $0.00 $25.09 $25.09 $33.86 $33.86 $0.00 $67.72 $33.86 $33.86 $25.09 $92.81 Totals $0.00 $0.00 $69.27 $69.27 $33.86 $33.86 $59.23 $126.95 $33.86 $33.86 $128.50 $196.22 Totals $0.00 $0.00 $15.69 $25.09 $40.78 $33.86 $33.86 $58.30 $0.00 $126.02 $33.86 $33.86 $73.99 $25.09 $166.80 Totals $0.00 $0.00 $31.21 $25.09 $56.30 $33.86 $33.86 $58.95 $0.00 $126.67 $33.86 $33.86 $90.16 $25.09 $182.97 Totals 2 Clab + Excavator - Pond Liner Cut and Fold General Laborer General Laborer 325C 2 Clab + Welder - Bat Gates General Laborer General Laborer Welding Equipment Light Truck - 1.5 Ton 3 Clab - Foam Adit Plugs General Laborer General Laborer 420D 4WD Backhoe Light Truck - 1.5 Ton 3 Clab + Welder - Culvert Bat Gate 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 6 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS General Laborer General Laborer Welding Equipment 420D 4WD Backhoe Light Truck - 1.5 Ton Totals $0.00 $0.00 $15.69 $31.21 $25.09 $71.99 $33.86 $33.86 $58.30 $58.95 $0.00 $184.97 $33.86 $33.86 $73.99 $90.16 $25.09 $256.96 Totals $0.00 $0.00 $0.00 $17.34 $17.34 $25.09 $59.77 $33.86 $33.86 $33.86 $56.90 $0.00 $0.00 $158.48 $33.86 $33.86 $33.86 $74.24 $17.34 $25.09 $218.25 Totals $0.00 $0.00 $0.00 $23.35 $31.21 $54.56 $34.46 $34.46 $34.46 $0.00 $58.95 $162.33 $34.46 $34.46 $34.46 $23.35 $90.16 $216.89 Totals $0.00 $0.00 $17.34 $51.09 $100.12 $100.12 $268.67 $33.86 $33.86 $56.90 $58.72 $44.80 $44.80 $272.94 $33.86 $33.86 $74.24 $109.81 $144.92 $144.92 $541.61 $0.00 $0.00 $51.09 $51.09 $33.86 $33.86 $58.72 $126.44 $33.86 $33.86 $109.81 $177.53 $0.00 $0.00 $17.34 $36.97 $78.03 $33.86 $33.86 $56.90 $58.72 $59.23 $33.86 $33.86 $74.24 $95.69 $137.26 3 Clab D - 3 Laborers + Foreman General Laborer General Laborer General Laborer Foreman Supervisor's Truck Light Truck - 1.5 Ton 3 SKWK - Liner Installation Skilled Laborer Skilled Laborer Skilled Laborer HDEP Welder (pipe or liner) 420D 4WD Backhoe B-3 - Small Building Demoltion General Laborer General Laborer Foreman 928G Dump Truck (10-12 yd3 ) Dump Truck (10-12 yd3 ) B-6 - Chain Link Fence/Pipeline/Culvert Removal General Laborer General Laborer 928G Totals B-8 - Large Building Demolition General Laborer General Laborer Foreman 928G 25 Ton Crane 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 7 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Dump Truck (10-12 yd3 ) Dump Truck (10-12 yd3 ) Totals $100.12 $100.12 $332.58 $44.80 $44.80 $332.17 $144.92 $144.92 $664.75 Totals $0.00 $0.00 $0.00 $0.00 $17.34 $22.36 $39.70 $33.86 $33.86 $33.86 $33.86 $56.90 $55.44 $247.78 $33.86 $33.86 $33.86 $33.86 $74.24 $77.80 $287.48 Totals $0.00 $62.91 $62.91 $33.86 $56.90 $90.76 $33.86 $119.81 $153.67 Totals $0.00 $111.52 $111.52 $33.86 $58.95 $92.81 $33.86 $170.47 $204.33 Totals $31.21 $31.21 $58.95 $58.95 $90.16 $90.16 $97.43 $69.27 $25.09 $191.79 $59.23 $59.23 $0.00 $118.46 $156.66 $128.50 $25.09 $310.25 $0.00 $0.00 $0.00 $0.00 $17.34 $99.33 $116.67 $33.86 $33.86 $33.86 $33.86 $56.90 $59.23 $251.57 $33.86 $33.86 $33.86 $33.86 $74.24 $158.56 $368.24 $97.43 $59.23 $156.66 B-9 - Concrete Wall Demolition General Laborer General Laborer General Laborer General Laborer Foreman Air Compressor + tools B-10Y - General Compaction General Laborer CS563E Vibratory Roller B-11L - Fine Grading for Evaporation Pond Liner Base General Laborer 14G/H B-11M - Backhoe Work 420D 4WD Backhoe B-12G - Rip-Rap Machine Placed (Modified) 966G 325C Light Truck - 1.5 Ton Totals B-13 - Grouted Rip-Rap & Gabion Baskets General Laborer General Laborer General Laborer General Laborer Foreman 25 Ton Crane Totals B-12G - Rip-Rap Machine Placed (Modified) 966G 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 8 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS 325C Light Truck - 1.5 Ton $69.27 $25.09 $191.79 $59.23 $0.00 $118.46 $128.50 $25.09 $310.25 Totals $97.43 $69.27 $25.09 $191.79 $59.23 $59.23 $0.00 $118.46 $156.66 $128.50 $25.09 $310.25 Totals $0.00 $0.00 $0.00 $0.00 $0.00 $31.21 $25.09 $56.30 $56.90 $33.86 $33.86 $33.86 $33.86 $58.95 $0.00 $251.29 $56.90 $33.86 $33.86 $33.86 $33.86 $90.16 $25.09 $307.59 $17.34 $0.00 $0.00 $0.00 $25.09 $29.73 $9.41 $23.35 $104.92 $56.90 $34.46 $33.86 $33.86 $0.00 $58.95 $0.00 $0.00 $218.03 $74.24 $34.46 $33.86 $33.86 $25.09 $88.68 $9.41 $23.35 $322.95 $0.00 $0.00 $0.00 $25.09 $25.09 $33.86 $33.86 $33.86 $0.00 $101.58 $33.86 $33.86 $33.86 $25.09 $126.67 $33.86 $33.86 $33.86 $0.00 $101.58 $33.86 $33.86 $33.86 $25.09 $126.67 Totals B-12G - Rip-Rap Machine Placed (Modified) 966G 325C Light Truck - 1.5 Ton B-14 PVC Drain Pipe Installation Foreman General Laborer General Laborer General Laborer General Laborer 420D 4WD Backhoe Light Truck - 1.5 Ton B-22A - HDEP Installation - Pipe or Liner Foreman Skilled Laborer General Laborer General Laborer Light Truck - 1.5 Ton 5 Ton Crane Truck Generator 5KW HDEP Welder (pipe or liner) Totals B-80A - Install Barbed Wire Fence General Laborer General Laborer General Laborer Light Truck - 1.5 Ton Totals B-80C - Install Chain Link Fence (Flatbed truck has small crane) General Laborer General Laborer General Laborer Light Truck - 1.5 Ton $0.00 $0.00 $0.00 $25.09 $25.09 Totals 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 9 of 11 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS C-14B - Elevated Concrete Slabs (Reinforced Concrete Shaft Covers) Foreman Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter General Laborer General Laborer Rodmen (reinforcing concrete) Rodmen (reinforcing concrete) Rodmen (reinforcing concrete) Rodmen (reinforcing concrete) Cement finisher Cement finisher Gas Engine Vibrator Concrete Pump $17.34 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $7.76 $91.22 $116.32 Totals $56.90 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $33.86 $33.86 $33.98 $33.98 $33.98 $33.98 $34.16 $34.16 $56.90 $0.00 $1,048.80 $74.24 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $33.86 $33.86 $33.98 $33.98 $33.98 $33.98 $34.16 $34.16 $64.66 $91.22 $1,165.12 C-14D - Concrete Walls Formed in Place (Reinforced Concrete Adit Bulkheads) Foreman Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter Carpenter 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. $17.34 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 10 of 11 $56.90 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $74.24 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 $41.44 Fleets (Crews) Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls EQUIPMENT FLEETS Carpenter Carpenter Carpenter Carpenter General Laborer General Laborer Rodmen (reinforcing concrete) Rodmen (reinforcing concrete) Cement finisher Gas Engine Vibrator Concrete Pump $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $7.76 $91.22 $116.32 Totals 1/17/2011 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 11 of 11 $41.44 $41.44 $41.44 $41.44 $33.86 $33.86 $33.98 $33.98 $34.16 $56.90 $0.00 $1,029.56 $41.44 $41.44 $41.44 $41.44 $33.86 $33.86 $33.98 $33.98 $34.16 $64.66 $91.22 $1,145.88 Fleets (Crews) 4800 2800 1500 1000 750 600 500 50 100 200 300 400 500 600 Dozing Factor 1.6 1.4 1.2 1 0.8 0.55 0.3 % Grade vs. Dozing Factor OPERATOR Average MATERIAL (1) Job Condition Correction Factors - Bulldozers (see graph) Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 0.75 Source: Caterpillar Performance Handbook Edition 35 % Grade Dozing Factor = -0.0214x + 0.9786 % Grade -30 -20 -10 0 10 20 30 81639 -0.8502 2800 1700 950 625 500 410 350 D10R 5280 ft D8R 12.92 ft 7.08 ft 3.58 ft 10.66 ft 1.0 mph 0.25 min 5280 ft D7R 12.08 ft 6.50 ft 3.25 ft 9.75 ft 1.0 mph 0.25 min 5280 ft D6R 10.67 ft 6.50 ft 3.25 ft 9.75 ft 1.0 mph 0.25 min 1400 850 475 275 175 125 100 1000 700 375 250 D7R 520 210 150 D6R 89889 -0.9425 115087 -1.0809 22719 -0.7796 101029 -1.1506 Source: Caterpillar Performance Handbook Edition 35 2000 1250 700 450 300 250 200 D9R D8R Source: Caterpillar Performance Handbook Edition 35 5280 ft Production (LCY/hr) p dozer productivity = k x Dozing Distance (see graph) k= 185082 p= -0.919 D11R Productivity - Bulldozers (cont.) 1/17/2011 5280 ft 5280 ft D9R 14.17 ft 7.67 ft 3.87 ft 11.54 ft 1.0 mph 0.25 min Dozer Productivity vs. Grading Distance D10R 15.92 ft 8.67 ft 4.33 ft 13.00 ft 1.0 mph 0.25 min Dozer Specifications D11R 18.33 ft 9.83 ft 4.75 ft 14.58 ft 1.0 mph 0.25 min Average Dozing Distance (feet) Description Blade Width (SU) Shank Guage (3 shanks) Pocket Spacing Ripping Width (Ripper + 1 Pocket) Ripping Speed Ripping Maneuver (turn) Time Ripping Hourly Production (excluding maneuvering time) Productivity - Bulldozers 1 of 8 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 -30 1500 2000 2500 3000 -20 0 500 1000 0 0 10 300 400 20 Source: Caterpillar Performance Handbook Edtion 35 % Grade (- Downhill, + Uphill) -10 y = -0.0214x + 0.9786 % Grade vs. Dozing Factor 200 30 Dozing Distance (feet) y = 81639x -0.8502 y = 185082x -0.919 500 y = 89889x -0.9425 Dozer Productivity (Semi-U Blade) y = 101029x -1.1506 -0.7796 100 y = 22719x y = 115087x -1.0809 LCY/hr Dozing Factor 600 700 D6R D7R D8R D9R D10R D11R Productivity Scraper Specifications 637G PP 112,760 lb 24 cy 34 cy 29 cy Self* 0.5 min 0.6 min 0.83 2.5% 24 cy 34 cy 29 cy One D10R 0.5 min 0.7 min 0.83 2.5% kg/m3 1,720 1,960 1,480 1,660 1,510 1,540 1,540 1,510 1,250 1,600 1,420 1,600 950 631G 100,600 lb lb/cy 2,900 3,300 2,500 2,800 2,550 2,600 2,600 2,550 2,100 2,700 2,400 2,700 1,600 Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Material Alluvium Basalt Weight of Materials lb/cy 2,900 3,300 Scraper Load lb 84,100 95,700 Source: Caterpillar Performance Handbook Edition 35 **A firm, smooth, rolling roadway with dirt or light surfacing, flexing slightly under load or undulating, maintained fairly regularly, watered * Requires pair Loaded by Load Time Maneuver and Spread Job Efficiency Rolling Resistance** Struck Heaped Average Productivity - Scrapers (1) Source: Caterpillar Performance Handbook Edition 35 Description Empty Weight Payload Capacity 0.83 1.00 0.60 1.20 0.80 0.80 1.20 1.00 Source: Caterpillar Performance Handbook Edition 35 Material Alluvium Basalt Clay - Dry Granite - broken Gravel LS - broken LS - crushed Sandstone Shale Stone - crushed Tailings - Coarse (dry, loose sand) Tailings - Slimes (loose sand & clay) Topsoil Material Densities (1) (1) Selected in facility worksheets. Other factors included as standard factors. Hard to drift; “dead” (dry,non-cohesive material) or very sticky material Rock, ripped or blasted SLOT DOZING OR SIDE BY SIDE DOZING (1) VISIBILITY Good conditions JOB EFFICIENCY 50 min/hr Loose stockpile Normal Hard to cut; frozen — with tilt cylinder Loaded Weight (lbs) 184,700 196,300 22.0% 7.5 7.5 16.0% 10 10 10.0% 13 13 631G 2 of 8 5.0% 33 24.5 1.0% 33 33 Loaded Weight (lbs) 196,860 208,460 25.0% 7 7 20.0% 10 10 15.0% 10 10 10.0% 18.5 18.5 637G PP Downhill Scraper Speed - Grade Retarding vs. Effective Grade (Grade - Rolling Resistance) Note: uses Sand & Gravel - Dry from Caterpillar Handbook 5.0% 34 25 1.0% 34 34 Productivity Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Travel Time (min) = 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% Total Resistance (%) (rolling + grade) Travel Time (min) = 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% Total Resistance (%) (rolling + grade) p p distance k 0.5 1100 950 800 700 600 500 450 375 0.5 825 750 550 490 375 300 250 225 72,500 81,200 73,950 75,400 75,400 73,950 60,900 78,300 69,600 78,300 46,400 173,100 181,800 174,550 176,000 176,000 174,550 161,500 178,900 170,200 178,900 147,000 Empty 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 10 2 5300 4600 3000 2200 1600 1300 1100 900 4800 3300 2500 2000 1700 1400 3 1 2550 2400 2100 1600 1300 1100 900 800 2 5550 5300 4750 3550 2750 2250 1950 1600 5550 4300 3450 2950 2500 3 631G Scraper Travel Time - Uphill Empty Time (min) 1 2250 1800 1400 1000 750 700 550 450 631G Scraper Travel Time - Uphill Loaded Time (min) 2,500 2,800 2,550 2,600 2,600 2,550 2,100 2,700 2,400 2,700 1,600 distance k Productivity - Scrapers (cont.) Clay - Dry Granite - broken Gravel LS - broken LS - crushed Sandstone Shale Stone - crushed Tailings - Coarse (dry, loose sand) Tailings - Slimes (loose sand & clay) Topsoil 5600 4200 3450 2800 2250 5 13 13 13 13 13 13 18 13 13 13 18 24.5 k 2142.7 1838.1 1310.7 1022.1 769.01 645.84 531.04 452.07 33 33 33 33 33 33 33 33 33 33 33 33 p 1.3418 1.3083 1.1893 1.066 1.0558 1.0424 1.0453 1.0089 33 33 33 33 33 33 33 33 33 33 33 33 5750 4950 4200 5 k 2496.9 2294.8 1998.3 1557.5 1287.8 1068.1 923.56 783.37 p 1.1675 1.24 1.2849 1.1566 1.0891 1.0552 1.0492 1.0444 3 of 8 Source: Caterpillar Performance Handbook Edition 35 5750 4550 3950 3300 4 Source: Caterpillar Performance Handbook Edition 35 6700 4500 3300 2750 2250 1850 4 10 10 10 10 10 10 10 10 10 10 10 18 0 1000 2000 3000 4000 5000 6000 7000 0 1000 2000 3000 4000 5000 6000 7000 185,260 193,960 186,710 188,160 188,160 186,710 173,660 191,060 182,360 191,060 159,160 Empty Distance (fee Distance (fee 0 0 7 7 7 7 7 7 10 7 7 7 10 10 0 0 0 0 0 0 0 0 10 10 10 10 10 10 13.5 10 10 10 13.5 13.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 1 1 2 2 3 4 Time (min) 3 5 14.0% y = 452.07x1.0089 12.0%y = 531.04x1.0453 10.0%y = 645.84x1.0424 8.0% y = 769.01x1.0558 6.0% y = 1022.1x1.066 4.0% y = 1310.7x1.1893 2.0% y = 1838.1x 1.3083 0.0% y = 2142.7x1.3418 S 4 C ill 5 P f H db k Edi i 34 14.0% y = 783.37x1.0444 12.0% y = 923.56x1.0492 10.0% y = 1068.1x1.0552 8.0% y = 1287.8x1.0891 6.0% y = 1577.5x1.1566 4.0% y = 1998.3x1.2849 2.0% y = 2294.8x1.24 0.0% y = 2496.9x1.1675 Source: Caterpillar Performance Handbook Edition 34 631G Travel Time - Uphill Empty Time (min) 631G Travel Time - Loaded Source: Caterpillar Performance Handbook Edition 34 10 10 10 10 10 10 10 10 10 10 10 10 Productivity Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Description Chassis Weight Body Weight Standard Liner Weight Total Truck Weight Haul Truck Specifications Productivity - Haul Trucks Travel Time (min) = 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% Total Resistance (%) (rolling + grade) Travel Time (min) = 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% Total Resistance (%) (rolling + grade) p p 1 2500 2200 1700 1300 1100 850 750 600 2 5550 5150 3900 2750 2200 1750 1500 1300 6250 4300 3300 2700 2300 2000 3 777D 111,575 lb 36,788 lb 148,363 lb 70,706 lb 1 2750 2600 2450 2000 1600 1350 1200 1010 769D 53,506 lb 17,200 lb distance k 0.5 1250 1200 990 800 700 625 550 495 2 5700 5550 5250 4450 3500 2800 2450 2100 7216 5400 4300 3750 3200 3 637G Push-Pull Scraper Travel Time - Uphill Empty Time (min) 0.5 1000 850 700 600 500 400 375 275 4 5600 4475 3800 3250 5 k 2402.9 2127.6 1659.4 1287.8 1059.1 839.89 751.58 595.28 p 1.2362 1.2995 1.2212 1.0891 1.0421 1.0503 1.0055 1.0794 7216 6250 5300 5 k 2695.9 2587.1 2335.2 1914.4 1563.8 1327.4 1168.8 1015.8 p 1.0945 1.1047 1.0234 1.2211 1.124 1.0611 1.0524 1.0337 4 of 8 Source: Caterpillar Performance Handbook Edition 35 7216 5750 5000 4250 4 Source: Caterpillar Performance Handbook Edition 35 5750 4500 3600 3000 2650 637G Push-Pull Scraper Travel Time - Uphill Loaded Time (min) distance k Productivity - Scrapers (cont.) Distance (fee Distance (feet) 0 1000 2000 3000 4000 5000 6000 7000 8000 0 1000 2000 3000 4000 5000 6000 7000 8000 0 0 0.5 1 1 1.5 2 2 3 4 2.5 Time (min) 3 3.5 5 y = 1287.8x1.0891 y = 751.58x1.0055 y = 839.89x1.0503 1.0794 14.0% y = 595.28x 12.0% 10.0% 1.0421 8.0% y = 1059.1x 6.0% 4.5 5 14.0% y = 1015.8x1.0337 Source: Caterpillar Performance Handbook Edition 34 4 1.0611 12.0% y = 1168.8x1.0524 10.0% 1.124 y = 1327.4x 8.0% y = 1563.8x 6.0% y = 1914.4x 1.2211 4.0% y = 2335.2x 1.2034 1.1047 1.0945 2.0% y = 2587.1x 0.0% y = 2695.9x Source: Caterpillar Performance Handbook Edition 34 637G PP Travel Time - Loaded Time (min) y = 2127.6x1.2995 y = 2402.9x1.2362 1.2212 4.0% y = 1659.4x 2.0% 0.0% Source: Caterpillar Performance Handbook Edition 34 637G PP Travel Time - Loaded Time (min) Productivity Struck Heaped Average 0.7 min 1.1 min 0.83 2.5% 21.6 cy 31.7 cy 26.65 cy 0.7 min 1.1 min 0.83 2.5% 55 cy 78.6 cy 66.8 cy p Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 0.0% Total Resistance (%) (rolling + grade) Truck Truck Loaded (769D) Load (777D) Load Weight (lbs) lb lb 77,285 193,720 147,991 87,945 220,440 158,651 66,625 167,000 137,331 74,620 187,040 145,326 67,958 170,340 138,664 69,290 173,680 139,996 69,290 173,680 139,996 67,958 170,340 138,664 55,965 140,280 126,671 71,955 180,360 142,661 69,600 170,200 78,300 178,900 42,640 106,880 113,346 Empty 1 3428 2821 1984 1427 1082 869 574 2 7183 5904 4198 2952 2263 1771 1181 6330 4510 3411 2690 1804 3 0.4 1427 1 3870 2 3 769D Haul Truck Travel Time - Uphill Empty Time (min) 0.4 1148 951 689 508 394 328 213 5740 4510 3018 k 3316.3 2733 1928.3 1386.4 1061.8 857.82 565 15 26 10.0% 15 11 15 15 15 15 15 15 15 15 p 1.1422 1.1372 1.1033 1.0725 1.06 1.0373 1.0482 26 36 5.0% 26 20 26 26 26 26 26 26 26 26 4 5 5 of 8 k 3870 p 1.0888 Source: Caterpillar Performance Handbook Edition 35 6002 4592 3608 2394 5 11 15 11 15 4 15.0% 11 11 11 11 11 11 11 11 11 11 20.0% 11 11 11 11 11 11 11 11 11 11 769D 15.0% 9 7 9 9 9 9 9 9 9 9 12 16 20.0% 7 7 7 7 7 7 7 7 7 7 9 16 777D 16 29 10.0% 12 12 16 12 16 12 12 16 16 12 29 39 5.0% 29 21 29 29 29 29 29 29 29 29 6000 7000 8000 0 1000 2000 3000 4000 5000 6000 7000 8000 0 1 2 4 5 1.0725 1.0373 1.0482 15.0% y = 565x 10.0%y = 857.82x 1.06 8.0% y = 1061.8x 6.0% y = 1386.4x 4.0% y = 1928.3x1.1033 2.0% y = 2733x1.1372 0.0% y = 3316.3x1.1422 4.0% 0.0% Productivity y = 3400.1x1.0895 y = 3870x1.0888 Source: Caterpillar Performance Handbook Edition 34 769D Travel Time - Empty Time (min) 3 769D Travel Time - Loaded Source: Caterpillar Performance Handbook Edition 35 255,243 Empty Loaded Weight (lbs) 342,083 368,803 315,363 335,403 318,703 322,043 322,043 318,703 288,643 328,723 Downhill Haul Truck Speed - Grade Retarding vs. Effective Grade (Grade - Rolling Resistance) 769D Haul Truck Travel Time - Uphill Loaded Time (min) lb/cy 2,900 3,300 2,500 2,800 2,550 2,600 2,600 2,550 2,100 2,700 2,400 2,700 1,600 distance k Productivity - Haul Trucks (cont.) Travel Time (min) = 0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 15.0% Total Resistance (%) (rolling + grade) Material Alluvium Basalt Clay - Dry Granite - broken Gravel LS - broken LS - crushed Sandstone Shale Stone - crushed Tailings - Coarse (dry, loose sand) Tailings - Slimes (loose sand & clay) Topsoil Weight of Materials Source: Caterpillar Performance Handbook Edition 35 **A firm, smooth, rolling roadway with dirt or light surfacing, flexing slightly under Maneuver to Load Time Maneuver and Dump Time Job Efficiency Rolling Resistance** Payload Capacity Distance (fee p p distance k Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Travel Time (min) = 0.0% 4.0% 6.0% 8.0% 10.0% 15.0% Total Resistance (%) (rolling + grade) p distance k 3444 2755 2230 1870 1246 7183 5740 4592 3870 2558 6954 5838 3903 1 2558 1509 1148 918 722 525 2 6068 3313 2460 1886 1443 1017 5215 3706 2837 2165 1558 3 0.4 968 754 656 607 525 410 1 3034 2657 2247 1935 1607 1197 2 6560 6068 5182 4248 3378 2460 6560 5215 3706 3 777D Haul Truck Travel Time - Uphill Empty Time (min) 0.4 656 459 394 777D Haul Truck Travel Time - Uphill Loaded Time (min) 1246 1017 820 722 459 distance k Productivity - Haul Trucks (cont.) Travel Time (min) = 0.0% 4.0% 6.0% 8.0% 10.0% 15.0% Total Resistance (%) (rolling + grade) Travel Time (min) = 4.0% 6.0% 8.0% 10.0% 15.0% 6560 1.0895 1.0759 1.0614 1.0391 1.0523 6298 4756 3608 2591 5 k 2403.1 1412 1111 922.57 721.44 520.56 p 1.3876 1.1863 1.0949 1.0197 1.0027 0.9905 6232 5 k 2929.3 2532.8 2167.3 1846.2 1528.4 1139.7 p 1.192 1.2999 1.2873 1.1831 1.1332 1.072 6 of 8 Source: Caterpillar Performance Handbook Edition 35 7282 4986 4 Source: Caterpillar Performance Handbook Edition 35 7085 5018 3772 2919 2034 4 Source: Caterpillar Performance Handbook Edition 35 5248 3400.1 2734.5 2191.3 1872 1222.9 Distance (fee Distance (fee 1 2 4 3 4 5 Source: Caterpillar Performance Handbook Edition 34 5 0 1000 2000 3000 4000 5000 6000 7000 0 1000 2000 3000 4000 0 1 2 3 4 15.0% y = 520.56x0.9905 5 y = 1846.2x1.1831 y = 2167.3x1.2873 15.0% Productivity y = 1139.7x1.072 10.0% y = 1528.4x1.1332 8.0% 6.0% 4.0% y = 2532.8x1.2999 0.0% y = 2929.3x1.192 Source: Caterpillar Performance Handbook Edition 34 777D Travel Time - Uphill Empty Time (min) y = 922.57x1.0197 y = 1111x1.0949 10.0% y = 721.44x1.0027 8.0% 6.0% y = 1421x1.1863 4.0% 0 3 Time (min) 777D Travel Time - Uphill Loaded 2 5000 1 1.0523 15.0% y = 1222.9x 1.0391 10.0% y = 1872x 8.0% y = 2191.3x1.0614 0.0% y = 2403.1x1.3876 0 y = 3400.1x 6.0% y = 2734.5x1.0759 6000 0 1000 2000 3000 4000 5000 6000 7000 Distance (fee Struck Heaped Average 16G/H 10.08 ft 16.00 ft 9.75 ft 3.0 mph 9.5 mph 6.3 mph 33000 ft 1.0 mph 0.0 mph 3.0 mph 1.5 mph 7920 ft 0.5 min 14G/H 9.25 ft 14.00 ft 8.50 ft 3.0 mph 9.5 mph 6.3 mph 33000 ft 1.0 mph 0.0 mph 3.0 mph 1.5 mph 7920 ft 0.5 min 0.45 cy Ditch/Trench Excavation Bucket Capcity Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 0.09 0.06 0.04 0.06 0.25 0.83 0.75 299 cy 0.40 187 cy 9.83 ft 0.09 0.06 0.03 0.05 0.23 0.83 0.75 229 cy 0.38 139 cy 9.17 ft 0.88 cy 325C 2.22 cy 0.90 1.998 cy hard clay med-hard 320C 1.57 cy 0.90 1.413 cy hard clay med-hard Description Bucket Capacity Fill Factor Average Bucket Load Soil Type Job Condition Cycle Times (minutes) - based on hard clay Load Bucket Swing Loaded Dump Bucket Swing Empty Total Cycle Time Job Efficiency Operator Efficiency Corrected Productivity (LCY/hr) Exploration Road Cycle Time (1) Exploration Road Corr Prod (LCY/hr) Track Width Track Excavator Specifications Productivity - Excavators 972G 4.71 cy 5.5 cy 5.11 cy N/A 0.50 min N/A N/A 2.5% 988G 6.9 cy 8.33 cy 7.62 cy 769D 0.55 min 4 2.29 2.5% 992G 13.2 cy 16 cy 14.60 cy 777D 0.60 min 5 3.23 2.5% 2.09 cy 0.13 0.07 0.02 0.06 0.28 0.83 0.75 360 cy N/A N/A 11.42 ft 345B 3 cy 0.90 2.7 cy hard clay med-hard 2.75 cy 0.19 0.06 0.03 0.07 0.35 0.83 0.75 701 cy N/A N/A 11.50 ft 385BL 7.3 cy 0.90 6.57 cy hard clay med-hard Source: Caterpillar Performance Handbook Edition 35 966G 4.46 cy 5 cy 4.73 cy N/A 0.50 min N/A N/A 2.5% 928G 2.5 cy 3.25 cy 2.88 cy N/A 0.45 min N/A N/A 2.5% Source: Caterpillar Performance Handbook Edition 35 Minimum Maximum Average Hourly Production (excluding manuever time) Maneuver time per pass Ripping Speed Minimum Maximum Average Hourly Production Description Grader Width Blade Width Ripper Width (7 shanks) Road Maintence Speed Motor Grader Specifications Productivity - Motor Graders **A firm, smooth, rolling roadway with Matched Truck Average Cycle Time Passes to Fill Truck Time to Fill Truck Rolling Resistance** Description Payload Capacity Wheel Loader Specifications Productivity - Wheel Loaders General Purpose 3.25 cubic yard 5.0 cubic yard 5.5 cubic yard not available not available Spade Nose-Rock not available not available not available 8.3 cubic yard 16.0 cubic yard 1 2 3 Time (min) Hvy Duty Rock 30" .78 cubic yd 36", 1.25 cubic yd 43.2", 1.69 cubic yd 85", 6.30 cubic yd. Extreme Service Exc (e.g. haulroad recontour) 55.1", 1.57 cubic yard 60", 2.22 cubic yard 65", 3.0 cubic yd 96.0, 7.30 cubic yd 7 of 8 5 Productivity Source: Caterpillar Performance Handbook Edition 34 Hvy Duty Trench 4 23.6", .54 yard 30", .88 cubic yard 48", 2.09 cubic yd 57", 2.75 cuic yd Note: capacities are 2:1 heaped, SAE standards NOTES: Buckets for both Track Excavators and Wheel Loaders are offered by CECo & available for the rental rates quoted. Bucket sizes and capacities obtained from CATERPILLAR PERFORMANCE HANDBOOK, ED 34; Section 12, Wheel Loader and Section 4, Excavators Bucket capacity and width dictated by material weight and configuration, ie., shot, loose, tight bank, stockpile, rock, etc. Typical Nevada applications were used to determine above bucket capacities as related to materials & densities. Job site specifics may alter specific bucket requirements ( Cashman Equipment, Elko, Nevada - February 21, 2005) 320C 325C 345B 385BL Track Excavators note: capacities are 2:1 heaped, SAE standards NOTES: Buckets for both Track Excavators and Wheel Loaders are offered by CECo & available for the rental rates quoted. Bucket sizes and capacities obtained from CATERPILLAR PERFORMANCE HANDBOOK, ED 34; Section 12, Wheel Loader and Section 4, Excavators Bucket capacity and width dictated by material weight and configuration, ie., shot, loose, tight bank, stockpile, rock, etc. Typical Nevada applications were used to determine above bucket capacities as related to materials & densities. Job site specifics may alter specific bucket requirements. (Cashman Equipment, Elko, Nevada - February 21, 2005) Wheeled Loaders 928G 966G 972G 988G 992G 0 0.50 37 cy 80 ft/hr Pulling casing (threaded, not cemented) Drill Rig 1.5 hr 200 ft/hr 150 ft/hr 40 ft/hr 8-inch 12-inch 18-inch Copyright © 2004-2008 - SRCE Software. All Rights Reserved. 1/17/2011 Cuttings Placement Productivity Shift productivity (Means 02210-7000120; Crew B11M) Shift length Estimated Hourly Productivity Inert Material Placement (backfill) Grouting/Cement Cuttings (see below) 345B H160D s reinforced concrete 300 cy 850 cy 575 cy 0.83 5.33 cy/hr 3.50 cy/hr 1.5 hr Pump Rig 28 cy / shift 8 hours 3.5 cy / hour Sournce: WDC Exploration, Dec 2005 1.0 hr $1.25 ft 240 ft/hr 6-inch Perforation setup,trip in/out,tear-down tim Perforation tool cost (wear cost) 240 ft/hr 4-inch Single-pass perforating (water wells) 0.50 139 cy 0.50 147 cy 350 cy 1550 cy 950 cy 0.83 385B H180D s Source: Caterpillar Performance Handbook Edition 35 0.50 66 cy Source: Caterpillar Performance Handbook Edition 35 160 cy 300 cy 230 cy 0.83 325C H120D s Move-to-hole, set-up, tear-down Description Drill Hole Plugging Productivity Drill Hole Plugging Productivity Description Hydraulic Hammer Material Min Shift Production (8hr) Max Shift Production (8hr) Avg Shift Production (8hr) Job Efficiency Track Excavator w/Hammer Specifications Concrete Breaking Production Fill Factor Corrected Productivity (LCY/hr) 8 of 8 (1) Exploration cycle time assumes feathering/smoothing performed by excavator Productivity Bond Calculation Seed Mixture Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Seed Mixture Common Name Scientific Name Species Number of Seeds / lb Species % in Mix PLS/acre Cost/Lb Cost/Acre Grasses $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total 0 $0.00 Source: Notes: 1/17/2011 Copyright © 2004 - Jeffrey V. Parshley. All Rights Reserved. 1 of 1 Seed Mixture Project Name: Marlin - Reclamation Plan Date of Submittal: 1 July 2010 File Name: Marlin Rec Cst 2010 12 01.xls Model Version: Version 1.1.2 (updated 03 February, 2008) Cost Data: Standardized Data Cost Data File: cost_data-std-nv2009-1.xls Years of Operation Waste Water Treatment Annual Total Cost Equipment Cost Replacement 17 3024000 51408000 9000000 Quantity Hazmat Incinerator, 400 lbs/h Units 10 day Labor Unit Cost Equipment Unit Cost Material Unit Cost ($) ($) ($) 3325 0 25000 Total Cost $ 283250