Background - Department of Environmental Quality
Transcription
Background - Department of Environmental Quality
June 27, 2014 Ms. Katie Robertson Oregon Department of Environmental Quality 700 SE Emigrant, Suite 330 Pendleton, Oregon 97801 Re: Vapor Mitigation Assessment: Sagene Building Former Foreman’s Cleaners Site 15219 Sitkum Lane Salem, Oregon 15780-00/Task 6 Dear Ms. Robertson: This letter documents our design, installation, testing, and assessment of a sub-slab vapor mitigation approach at the former Foreman’s Cleaners site. All work was completed in general accordance with our February 26, 2014, Budget and Assumption Proposal and completed for the Oregon Department of Environmental Quality (DEQ) under Environmental Services Task Order 22-13-6. Background The former Foreman’s Cleaners site is located at 1070 Commercial Street SE in Salem, Oregon (Figure 1). There are no structures on the site property. Neighboring properties to the south include a Dutch Brothers Coffee drive-through kiosk and Wings of the Soul bookstore (Figure 2). Several businesses occupy the 6,570-square-foot Sagene commercial building to the north (ESCI #4389), including Complete Alterations and AAA Service Metro, Inc. The eastern portion of the Sagene building is unoccupied storage. The property and associated building north of the Sagene property is occupied by 1 Day Signs. An alley divides the city block, extending north from Owens Street SE, along the eastern property boundary, to Bush Street SE. The residential Bayberry Apartment complex is immediately east of the property on the other side of the alley. The site property was a dry cleaning establishment from approximately 1936 to 2000. Dry cleaning operations used Stoddard solvent (a petroleum solvent) between 1936 and the mid-1980s, after which tetrachloroethene (PCE) was used as the dry cleaning solvent. In 1997, environmental activities identified Stoddard solvent, PCE, and their respective degradation byproducts in the soil and groundwater on the site. Since the initial site investigation, multiple environmental investigations have taken place to address the source of contamination and to assess the extent and magnitude of contamination. This includes the removal of underground storage tanks on the site and environmental assessment of adjacent properties, primarily the Sagene property. 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 2 In October 2013, Hart Crowser conducted a Focused Remedial Investigation (RI) to update our understanding of both groundwater and vapor concentrations across the Locality of the Facility (LOF). The RI included collecting nine groundwater samples from site wells; six soil gas samples; two sub-slab vapor samples under the Sagene building; two indoor ambient air samples inside the Sagene building; and one outdoor ambient air sample. Continuous differential pressure sampling was conducted between the two indoor air sampling locations and the outdoor atmosphere. Results detected PCE and trichloroethene (TCE) in indoor air above applicable occupational risk-based concentrations (RBCs) in the AAA Cleaning space. TCE was also above its occupational soil gas RBC in a soil gas sample south of the Sagene building. While the three businesses along the west side of the Sagene building have had their HVAC systems upgraded to improve fresh-air exchange, the AAA Cleaning space does not currently have any fresh air exchange. Slight negative differential pressures observed in the AAA Cleaning space may be inducing vapor migration into the space. All historical vapor sample locations are presented on Figure 2. Sub-Slab Test Design The primary goal of this assessment was to determine if a simple sub-slab depressurization system, located approximately in the middle of the Sagene Building, could be effective in mitigating vapor intrusion risk broadly across potentially impacted commercial spaces. The western portion of the current AAA Cleaning space was selected as the test location based on vapor intrusion risk in the eastern portion of the AAA Cleaning space and proximity to Complete Alterations, where prior investigations have shown elevated risks. Since the AAA Cleaning space is not continuously staffed, the test would cause minimal disturbance to the business. To assess the propagation of vacuum within the 3- to 4-inch thick base course under the Sagene building, three permeant sub-slab vapor points were installed on March 24, 2013. These points are identified as PV-1, PV-2, and PV-3 (Figure 3). AMS Incorporated (American Falls, Idaho) manufactured the stainless steel, flush-mounted, and tamper-resistant hardware, consisting of a 2-inch-diameter counter sink plate installed to be flush with the concrete slab. The penetrating point included a 0.4-inch by 3.0-inch screen attached to a 0.25-inch diameter, internally threaded casing that receives the plate. The screen was installed just below the bottom of the slab and within the base course. The system was sealed using a 1-inch diameter rubber stopper and approximately three inches of concrete. Geotechnical hole reports were filed with the Oregon Water Resources Department (OWRD) and are included in Attachment A. 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 3 The temporary vapor extraction point consisted of a temporarily installed, 4-inch-diameter, perforated PVC pipe penetrating the slab, through the base course and underlying silty soil for structural stability. The riser was then split to permit single- or double-radon fan operation. Piping below the fans was installed on March 24, 2014, to permit time for the seal between the pipe and the slab to set. During the initial depressurization testing, the system was configured for operation using a single fan (Photograph 1, right). A radon fan was then attached in-line. Rigid Photograph 1 – Single fan test configuration polyvinylchloride (PVC) pipe was temporarily assembled on the exhaust side of the fan to promote linear air flow. This PVC exhaust was sealed with tape to a flexible polyethylene (PE) discharge line, which was run into the adjacent bathroom where a ventilation fan operated continuously to exhaust vapors to the outside air. All PVC/fan joints were snugly seated and coated with a layer of food-grade silicone grease to prevent air leakage. Following the initial testing, a second radon fan was installed onto the riser to provide additional vacuum for sub-slab depressurization (Photograph 2, right). This reconfigured system placed the two fans in parallel with a single exhaust for maximum effectiveness. Similar to the single fan configuration, the combined PVC exhaust manifold was connected to a flexible PE discharge line and placed into the bathroom so vapors could be vented to the outside air. Following testing, the piping was removed, the hole in the slab patched with concrete, and the carpet glued back down. To measure pressure changes during the testing process, each new permanent sub-slab vapor point was connected to a PT2X-BV absolute barometric pressure sensor, manufactured by Instrumentation Northwest (Kenmore, Washington). These are the same model of sensors used during the initial differential pressure assessment conducted during the RI. Air-tight communication between each sensor and sub-slab air was achieved using the removable, stainless steel vapor sample barb included in the AMS installation kit, rigid PE tubing, and flexible connection using silicone tubing (Photograph 3, right). Spans of silicone tubing without rigid 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Photograph 2 – Dual fan test configuration Picture 3 – Pressure sensor installation Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 4 backing (e.g., sample barbs or PE tubing) were de minimus to ensure that mechanic deflection didn’t mute vacuum responses to the sensor. Baseline Sub-Slab Vapor Sampling Prior to conducting the sub-slab depressurization test, vapor samples were collected from each of the new permanent vapor sampling points. Each new point was allowed to set for more than 36 hours to permit time for the new concrete to setup properly and for vapors to reequilibrate. Samples were collected on March 26, 2014, using a batch-certified 1-liter SIM canister, new Teflon® tubing, and new silicone tubing (Picture 4, right). The sampling train and vapor was purged of approximately 500 milliliters of air using a peristaltic pump prior to sample collection. During purging and sample collection, Picture 4 – Sub-slab vapor sampling the point and sample train joints were covered with cloths saturated with 2-propanol to serve as leak detection. Samples were collected over the course of approximately 15 minutes using a laboratory-supplied, dedicated flow controller. SIM canisters were provided and chemical analyses were performed by ESC Lab Sciences (Mt. Juliet, Tennessee). The samples were analyzed for short list VOCs, including: PCE; TCE; cis-1,2-, trans-1,2-, and 1,1-dichloroethene (DCE); and vinyl chloride by EPA Method TO-15. As leak testing was performed using 2-propanol, this compound was also included in the analytical suite. Current and historical vapor analytical results are presented in Table 1. The analytical laboratory report for the March 2014 sampling is provided in Attachment B. An assessment of the data is provided below. Slab Crack and HVAC Survey For a single depressurization point to be effective in influencing vapor contamination movement broadly across the Sagene building, the slab must be reasonably contiguous and the base fill free of blockage. To the extent practicable, Hart Crowser conducted a visual survey of slab integrity from the hallway to the west side of the building, or the area of potential vapor intrusion risk (Figure 4). The survey’s accuracy is uncertain due to many areas having either glued carpet or hardwood floors. However, we were able to note that electrical and gas are conveyed across the roof and through wall, limiting the number of concrete slab penetrations. The hallway and adjacent storage space had an asphalt finish level with the concrete slab, suggesting this portion of the building may be an addition and not part of the original slab pour. We inquired with the maintenance manager and owner, and neither had as-built drawings for the building that might show potential presence of load-bearing footers that would subdivide the continuity of the base fill. 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 5 Our survey confirmed a minimum of five slab penetrations, including four toilets (which are required to be sealed by a base flange to prevent sewer gas entry) and one floor drain in The Printing Company bathroom (Photograph 5). We were not able to observe how sink water in the bathrooms discharged as effluent pipes ran into the walls. Some minor cracks in the concrete slab were observed in the unfinished backroom of The Printing Company, the only Photograph 5 – The Printing Company bathroom concrete slab area without carpet or hardwood flooring (Photograph 6). Although the observed cracks were only on the order of one to two millimeters in width and filled with fine debris, it is reasonable to assume that this type of minor cracking is present throughout the Sagene building. The observed HVAC system layout is also presented on Figure 4, along with major air unit subdivisions including walls and sealable doors and areas influenced by air exchange. Both The Printing Company and Kfe Microsystems have complete, roofmounted HVAC systems with fresh air intakes. According to the site maintenance supervisor, the HVAC exchanges approximately 30 percent fresh air during operation. Photograph 6 – The Printing Company Complete Alterations uses wall-mounted air conditioning with slab crack a separate fresh air exchange (recirculation) unit. While two vents are present in the AAA Cleaning space, the site maintenance supervisor indicated that the space has been blocked off from the roof-mounted HVAC system due to difficulties in balancing temperatures with Kfe Microsystems. Since the AAA Cleaning space is only sporadically occupied, wall-mounted electrical heaters supply partial climate control. There is no fresh air exchange in the AAA Cleaning space, and there is neither fresh air exchange or climate control in the hallway or storage areas. Depressurization Testing Depressurization testing was conducted in three phases, extending from 11:50 on March 26, 2014, through 11:50 on March 27, 2014. Following vapor sampling of the three new permanent vapor points on March 26, 2014, the absolute pressure transducers were sealed to be in direct communication with sub-slab air pressure. Dataloggers were programed to have synchronous time and capture instant pressure readings for all three sensors every 10 seconds. The depressurization system was then activated at 11:25 on March 26, 2014 using a single radon fan. The first phase of testing ended later that afternoon at 12:30. After reviewing the pressure data in the field, it was evident that a single fan configuration was not successful in influencing vacuum across to the two distal vapor points. PV-2, 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 6 located closest to the extraction point (4 feet), indicated a 0.30 inch water drop in pressure. No appreciable pressure change was noted in PV-1 or PV-3. These data are not presented in favor of the higher density testing described below. The depressurization system was then reconfigured for dual-fan operation and the test resumed at 14:10 on March 26, 2014. The two fans operated in parallel until 15:15 on March 26, 2014. Results were similar to prior observations, with no appreciable pressure change noted at the two distal vapor points. However, PV-2 did record a 0.41 inch of water pressure drop. Because of constant but minute atmospheric fluctuations in air pressure (i.e., pressure “noise”) and the 10-second recording interval, it was difficult to determine in the field if even a very small and temporary pressure shift could be noted in distal PV-1 and PV-3. There was also the possibility that depressurization would need to occur for a several hours prior to observing changes. As a result, the interval was shortened and a new set of tests was run overnight. After field reviewing the second test, the dataloggers were reprogrammed to record data every second and the two-fan configuration was restarted at 17:05 on March 26, 2014. As presented on Figure 5, an immediate response was noted in PV-2 and no discernable response was noted in PV-1 and PV-3. To assess longer term changes to sub-slab pressures, the recording frequency was increased to every five seconds beginning at 17:30 and the fans were allowed to run through the night. Overnight data is plotted on Figure 6. Upon return to the site on March 27, 2014, the dataloggers were reprogrammed again for a 1-second recording interval at 11:50 without interrupting system depressurization. During this period, an effluent vapor sample was collected from the system for any future vapor discharge considerations. The sample was collected after continuous operation lasting approximately 16.5 hours. The fans were then turned off at 12:23 on March 27, 2014. Pressure rebound monitoring is presented on Figure 7. As previously observed, only PV-2 demonstrated a measureable response. On Figures 5 through 7, recorded sub-slab pressures were standardized to account for individual differences between the sensors. To accomplish this, all three time-synchronized sensors were run side-by-side for 100 readings, collected at a five second interval, both before and following deployment. These readings were then averaged and two of the sensors’ data was adjusted to account for the minor differences relative to the third sensor. Comparison of the non-pumping readings shows lower pressure at PV-3, suggesting ambient sub-slab pressure under Complete Alterations is lower than under AAA Cleaning. The cause for this small background pressure difference is not readily apparent. Data Assessment This data assessment includes evaluation of ambient sub-slab vapor and depressurization exhaust concentrations data and depressurization responses. Vapor data are presented in Table 1. Laboratory reports are included as Attachment B. Upon a quality assurance review of the data, no data quality issues were identified and the data were deemed suitable for its intended purpose. 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 7 Vapor Data Assessment Three sub-slab vapor samples and one depressurization exhaust sample were collected during this study (Figure 3). PV-1 was installed in the eastern portion of the AAA Cleaning space at a location very close to the prior temporary sub-slab sample point, SSV-2. Results are very similar October 2013 data, suggesting limited seasonal variability in sub-slab concentrations between peak dry-season and near peak wet-season monitoring events in this portion of the building. PV-2, collected in the western portion of the AAA Cleaning space and adjacent to the temporary depressurization system, contained the highest concentrations of chlorinated volatile organic compounds (cVOCs) of the three permanent points. PCE was detected at 7,500 micrograms per cubic meter (µg/m3), TCE at 640 µg/m3, cis-1,2-DCE at 130 µg/m3, and even trans-1,2-DCE at 9.1 µg/m3. The concentrations were generally consistent with the depressurization system outflow values, especially PCE (8,100 µg/m3). Worth noting, the concentration of cis-1,2-DCE (310 µg/m3) was appreciably higher while TCE (350 µg/m3) was appreciably lower after approximately 24 hours of system operation. Soil gas concentrations under Complete Alterations (PV-3) were well below what was anticipated based on soil gas SV-3 collected during the RI in October 2013. PCE was detected at 2,900 µg/m3 in PV-3 whereas SV-3, collected just outside (south) of Complete Alterations, contained 29,000 µg/m3 in soil gas at a depth of 3 feet below ground surface. This difference may be due to factors including depth, potential breakthrough of ambient air, seasonal variations, and distance between sample locations. Analysis of 2-propanol in each of the new permanent points yielded concentrations with less than 5 percent leakage (not tabulated). PV-1 was non-detect for 2-propanol. PV-2 contained 320 µg/m3, and PV-3 contained 6,100 µg/m3. While the value from PV-3 is elevated, this concentration represents an acceptable amount of breakthrough, and the data are considered valid. Depressurization Assessment The depressurization test did not provide data supporting the ability of a centralized extraction system to effect vacuum across broad portions of the Sagene building. Measurable and immediate pressure response was only noted in PV-2, which is located approximately 4 feet away from the extraction point. At this distance, even a single fan would be sufficient to mitigate vapor intrusion risk in the area of highest apparent concentration. Both PV-1, located approximate 25 feet from the extraction point, and PV-2, located approximately 35 feet from the extraction point, failed to yield any short-term response to either single or double fan operation. However, dual fan depressurization did result in sub-slab pressures appreciably lower in PV-2 than either PV-1 or PV-3, confirming that a pressure gradient was effectively established. While not compelling, the magnitude of the pressure difference between PV-2 (AAA Cleaning West) and PV-3 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 8 (Complete Alterations) declined gradually with overnight operation of the depressurization system. This may be due external factors including barometric pressure changes or HVAC operation. It is unclear why the three vapor points displayed different ambient pressures, even after accounting for small variations between sensors. As shown on Figure 6, there appeared to be a common overall pressure influence and/or communication between the points based on short-term pressure changes occurring across all three sensors simultaneously. This test was completed with a depressurization cross-section of approximately 50 square inches. A future depressurization trench, measure 1-foot by 5-foot by 4-inch base coarse thickness would provide approximately 2,880 square inches of area to effect vacuum across. This increased area may improve the immediate influence of a mitigation system across portions of the Sagene building. Conclusions The March 2014 Sagene depressurization work yielded important information for any future vapor mitigation design and implementation. Depressurization testing captured elevated concentrations of cVOCs that were higher than were present under ambient conditions at either PV-1 or PV-3, which are located approximately 25 and 35 feet away from the extraction point, respectively. The western portion of the AAA Cleaning space is the most appropriate area to install a vapor mitigation system based on sub-slab and vapor effluent sampling results. The small, temporary, sump style depressurization configuration effectively lowered sub-slab pressures in the immediate vicinity of the sump (i.e., PV-2), potentially creating a gradient to move vapors. A sump-style extraction system may not be effective in capturing vapors across most of the Sagene building. Continuous operation and/or a trench style depressurization design may have a more measurable effect on pressures. A limited number of cracks and slab penetrations are noted, potentially allowing a sufficiently sized system to be effective. Any final system design should include vapor modeling and potential treatment of depressurization effluent (e.g., activated carbon capture) based on the proximity of fresh-air intakes at the Sagene building and nearby residents. 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 Oregon Department of Environmental Quality June 27, 2014 15780-00/Task 6 Page 9 Limitations Work performed by Hart Crowser for this project and in preparation of this letter was conducted in accordance with generally accepted professional practices in the same or similar localities, related to the nature of the work accomplished at the time our services were performed. This letter is for specific application to the referenced project and for the exclusive use of the DEQ. No other warranty, express or implied, is made. If you have any questions regarding this report, please feel free to contact us. Sincerely, HART CROWSER, INC. CHRISTOPHER W. MARTIN, PE RICHARD D. ERNST, RG Project Engineer Program Manager Attachments Figure 1 – Site Location Map Figure 2 – Exploration Plan Figure 3 – Building Layout Figure 4 – HVAC Components and Slab Crack Survey Figure 5 – Permanent Points Pressure Plot – March 2014 Figure 6 – Permanent Points Pressure Plot – March 2014 Figure 7 – Permanent Points Pressure Plot – March 2014 Attachment A – Geotechnical Hole Reports Attachment B – Analytical Report Cc: Steve Campbell, Oregon Department of Environmental Quality (w/o Attachments) 8910 SW Gemini Drive Beaverton, OR 97008-7123 Fax 503.620.6918 Tel 503.620.7284 JAB 06/19/14 F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Figures\15780006-001 (Site Location).dwg Project Site New Monitoring Well(s) New Dewatering Well Previously Identified Beneficial Use Well(s) 0 2,000 4,000 Scale in Feet Foreman's Cleaner's Vapor Mitigation Design Assessment Portland Salem, Oregon Salem Site Location Map N 15780-00/Task 6 6/14 Figure Source: 1 Carports 1 Day Signs Carport (Lower Level) Business Suites (Upper Level) Parking Lot SV-1 GW-01 (SV-01) Approximate Property Line Location Complete Alterations GW-02 (SV-02) MW-3 GW-03 SSV-2 PV-1 IA-1 Hallway AAA Outflow 1 Cleaning PV-2 ServiceKfe Microsystems, Metro, Inc. Inc. PV-3 (Indoor) Storage SSV-1 DEQ-7S IA-2 DEQ-2D (Indoor) SV-4 GP-21/DEQ-5S Bayberry Apartments The Printing Company Awning Former USTs SV-3 Extent of IRAM Soil Excavation MW-2 Former Foreman’s Cleaners DEQ-3D A-1 (Outdoor) SV-2 GP-22/ DEQ-6S Alley Former Drywell Location SV-6 Underground Sanitary Sewer Line MW-1 GP-23 Former UST Wings of the Soul Dutch Brothers Coffee Commercial Street SE F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Figures\15780006-002 (Exploration Plan).cdr SV-5 Bayberry Apartments DEQ-4D Clinic Porch DEQ-1D (Abandoned) Owens Street SE Exploration Location and Number: MW-1 Shallow Groundwater Monitoring Well (1999) DEQ-5S Shallow Groundwater Monitoring Well (12/00) DEQ-3D Deep Groundwater Monitoring Well (12/00) GW-01 (SV-01) A-1 SSV-2 Push Probe GW Sample (5/07) Soil Vapor Sample (5/07) Ambient Air Sample (10/13) 40 80 N Approximate Scale in Feet Foreman’s Cleaners Vapor Mitigation Design Assessment Salem, Oregon Sub-Slab Vapor Sample (10/13) SV-2 Soil Vapor Sample (10/13) PV-1 Permanent Soil Vapor Sample (3/14) Outflow 1 0 Temporary Extraction System Location (3/14) Source: Base map prepared from a Site Plan by EnviroLogic Resources, Inc. and a site survey by Udell Engineering and Surveying. Exploration and Sample Plan 15780-00/Task 6 6/14 Figure 2 Carports Carport (Lower Level) Business Suites (Upper Level) 1 Day Signs Parking Lot SV-1 The Printing Company Outflow 1 PV-2 Storage IA-1 (Indoor) PV-3 Alley F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Figures\15780006-003 (Building).cdr SSV-2 PV-1 AAA Cleaning ServiceMetro, Inc. Hallway Kfe Microsystems, Inc. SSV-1 Complete Alterations IA-2 (Indoor) DEQ-2D GW-03 GP-21/DEQ-5S SV-4 Former USTs Awning Approximate Property Line Location SV-3 Former Foreman’s Cleaners Extent of IRAM Soil Excavation SV-5 MW-2 0 DEQ-3D 20 40 Exploration Location and Number: MW-1 Shallow Groundwater Monitoring Well (1999) DEQ-5S Shallow Groundwater Monitoring Well (12/00) DEQ-3D Deep Groundwater Monitoring Well (12/00) GW-01 (SV-01) A-1 SSV-2 Push Probe GW Sample (5/07) Soil Vapor Sample (5/07) Source: Base map prepared from a Site Plan by EnviroLogic Resources, Inc. and a site survey by Udell Engineering and Surveying. Foreman’s Cleaners Vapor Mitigation Design Assessment Salem, Oregon Ambient Air Sample (10/13) Building Layout Sub-Slab Vapor Sample (10/13) SV-2 Soil Vapor Sample (10/13) PV-1 Permanent Soil Vapor Sample (3/14) Outflow 1 N Approximate Scale in Feet Temporary Extraction System Location (3/14) 15780-00/Task 6 6/14 Figure 3 Carports Carport (Lower Level) Business Suites (Upper Level) 1 Day Signs Parking Lot Small Cracks in Concrete Floor V Low Spot with Crack in Asphalt V The Printing Company A V V V V F V A Crack in Asphalt Kfe Microsystems, Inc. AAA Cleaning ServiceMetro, Inc. V Hallway V V D V Storage WH WH Alley F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Figures\15780006-004 (HVAC).cdr F F V F Complete Alterations Wall AC Unit Wall Recirculation Unit WH Former USTs Awning Approximate Property Line Location Extent of IRAM Soil Excavation Former Foreman’s Cleaners 0 20 40 N Approximate Scale in Feet Source: Base map prepared from a Site Plan by EnviroLogic Resources, Inc. and a site survey by Udell Engineering and Surveying. Single/Double Door Enclosing Indoor Air Unit F Ceiling Fan V Vent WH Wall Heater A Return Air D Floor Drain Foreman’s Cleaners Vapor Mitigation Design Assessment Salem, Oregon HVAC Components and Slab Crack Survey 15780-00/Task 6 6/14 Figure 4 tjf 06/24/14 F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Pressure Data\Pressure Data and Figures.xls 33.32 Note: Black line through data is 5-second rolling pressure average. 33.31 Turned Fans On at 17:05 Pressure (Feet of Water) 33.30 33.29 Foreman's Cleaners Groundwater Monitoring Salem, Oregon 6/14 Figure 5 Permanent Points Pressure Plot - March 2014 15780-00/Task 6 33.28 33.27 PV-3 Pressure PV-2 Pressure PV-1 Pressure 33.26 16:57:22 17:01:41 17:06:00 17:10:19 17:14:38 17:18:58 17:23:17 17:27:36 tjf 06/24/14 F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Pressure Data\Pressure Data and Figures.xls Note: Black line through data is 5-second rolling pressure average. 33.65 Turned Fans Off at 12:23 PV-3 Pressure PV-2 Pressure 33.60 PV-1 Pressure Pressure (Feet of Water) 33.55 33.50 Turned Fans On at 17:05 33.45 Foreman's Cleaners Groundwater Monitoring Salem, Oregon 6/14 Figure 6 Permanent Points Pressure Plot - March 2014 15780-00/Task 6 33.40 33.35 33.30 33.25 15:07:12 17:31:12 19:55:12 22:19:12 0:43:12 3:07:12 5:31:12 7:55:12 10:19:12 12:43:12 15:07:12 tjf 06/24/14 F:\Data\Jobs\DEQ\15780-00 Foreman's Cleaners\Task 6 - Vapor Mitigation Design Assessment and Report\Pressure Data\Pressure Data and Figures.xls 33.62 Note: Black line through data is 5-second rolling pressure average. Turned Fans Off at 12:23 33.61 Pressure (Feet of Water) 33.60 33.59 33.58 Foreman's Cleaners Groundwater Monitoring Salem, Oregon 6/14 Figure 7 Permanent Points Pressure Plot - March 2014 15780-00/Task 6 33.57 PV-3 Pressure PV-2 Pressure 33.56 PV-1 Pressure 33.55 33.54 12:17:17 12:21:36 12:25:55 12:30:14 12:34:34 12:38:53 12:43:12 12:47:31 12:51:50 12:56:10 ATTACHMENT A Geotechnical Hole Reports 15780-00/Task 6 June 27, 2014 ATTACHMENT B Analytical Report 15780-00/Task 6 June 27, 2014 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Troy Fowler / Katie Robertson Oregon Dept. of Env. Quality - ODEQ 700 SE Emigrant Ave., Suite 330 Pendleton, OR 97801 Report Summary Wednesday April 09, 2014 Report Number: L690826 Samples Received: 04/02/14 Client Project: 15778-00/TASK 6 Description: DEQ - Foreman's Cleaners The analytical results in this report are based upon information supplied by you, the client, and are for your exclusive use. If you have any questions regarding this data package, please do not hesitate to call. Entire Report Reviewed By: ____________________________________ Jarred Willis , ESC Representative Laboratory Certification Numbers A2LA FL NC SC MN TX - - 1461-01, AIHA - 100789, AL - 40660, CA - 01157CA, CT - PH-0197, E87487, GA - 923, IN - C-TN-01, KY - 90010, KYUST - 0016, ENV375/DW21704/BIO041, ND - R-140. NJ - TN002, NJ NELAP - TN002, 84004, TN - 2006, VA - 460132, WV - 233, AZ - 0612, 047-999-395, NY - 11742, WI - 998093910, NV - TN000032011-1, T104704245-11-3, OK - 9915, PA - 68-02979, IA Lab #364, EPA - TN002 Accreditation is only applicable to the test methods specified on each scope of accreditation held by ESC Lab Sciences. This report may not be reproduced, except in full, without written approval from ESC Lab Sciences. Where applicable, sampling conducted by ESC is performed per guidance provided in laboratory standard operating procedures: 060302, 060303, and 060304. Page 1 of 14 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 REPORT OF ANALYSIS Troy Fowler / Katie Robertson Oregon Dept. of Env. Quality - ODEQ 700 SE Emigrant Ave., Suite 330 Pendleton, OR 97801 April 09, 2014 ESC Sample # : Date Received Description : : April 02, 2014 DEQ - Foreman's Cleaners Sample ID : PV-1 Site ID : Project # : Collected By : Collection Date : L690826-01 15778-00/TASK 6 Jason R. Miles 03/26/14 09:03 Parameter Volatile Organics 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene Tetrachloroethylene Trichloroethylene Vinyl chloride 2-Propanol 1,4-Bromofluorobenzene Cas# 75-35-4 156-59-2 156-60-5 127-18-4 79-01-6 75-01-4 67-63-0 460-00-4 Mol Wght RDL1 96.9 96.9 96.9 166 131 62.5 60.1 0.200 0.200 0.200 3.20 0.200 0.200 1.25 RDL2 ppbv 0.790 0.790 0.790 22.0 1.10 0.510 3.10 < 0.20 0.67 < 0.20 180 9.9 < 0.20 < 1.3 99.6 ug/m3 < 0.79 2.7 < 0.79 1200 53. < 0.51 < 3.1 % Rec. Method TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 Date 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 RDL1 = ppbv , RDL2 = ug/m3 Note: Units are based on (STP) - Standard Temperature and Pressure The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. . Reported: 04/09/14 11:01 Revised: 04/09/14 15:49 Page 2 of 14 Dil. 1 1 1 16 1 1 1 1 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 REPORT OF ANALYSIS Troy Fowler / Katie Robertson Oregon Dept. of Env. Quality - ODEQ 700 SE Emigrant Ave., Suite 330 Pendleton, OR 97801 April 09, 2014 ESC Sample # : Date Received Description : : April 02, 2014 DEQ - Foreman's Cleaners Sample ID : PV-2 Site ID : Project # : Collected By : Collection Date : L690826-02 15778-00/TASK 6 Jason R. Miles 03/26/14 08:13 Parameter Volatile Organics 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene Tetrachloroethylene Trichloroethylene Vinyl chloride 2-Propanol 1,4-Bromofluorobenzene Cas# 75-35-4 156-59-2 156-60-5 127-18-4 79-01-6 75-01-4 67-63-0 460-00-4 Mol Wght RDL1 96.9 96.9 96.9 166 131 62.5 60.1 0.400 0.400 0.400 40.0 5.00 0.400 31.2 RDL2 ppbv 1.60 1.60 1.60 270. 27.0 1.00 77.0 < 0.40 34. 2.3 1100 120 < 0.40 130 95.8 ug/m3 < 1.6 130 9.1 7500 640 < 1.0 320 % Rec. Method TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 Date 04/01/14 04/01/14 04/01/14 04/02/14 04/01/14 04/01/14 04/01/14 04/01/14 RDL1 = ppbv , RDL2 = ug/m3 Note: Units are based on (STP) - Standard Temperature and Pressure The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. . Reported: 04/09/14 11:01 Revised: 04/09/14 15:49 Page 3 of 14 Dil. 2 2 2 200 25 2 25 2 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 REPORT OF ANALYSIS Troy Fowler / Katie Robertson Oregon Dept. of Env. Quality - ODEQ 700 SE Emigrant Ave., Suite 330 Pendleton, OR 97801 April 09, 2014 ESC Sample # : Date Received Description : : April 02, 2014 DEQ - Foreman's Cleaners Sample ID : PV-3 Site ID : Project # : Collected By : Collection Date : L690826-03 15778-00/TASK 6 Jason R. Miles 03/26/14 09:27 Parameter Volatile Organics 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene Tetrachloroethylene Trichloroethylene Vinyl chloride 2-Propanol 1,4-Bromofluorobenzene Cas# 75-35-4 156-59-2 156-60-5 127-18-4 79-01-6 75-01-4 67-63-0 460-00-4 Mol Wght RDL1 96.9 96.9 96.9 166 131 62.5 60.1 0.400 0.400 0.400 10.0 0.400 0.400 500. RDL2 ppbv 1.60 1.60 1.60 68.0 2.10 1.00 1200 < 0.40 1.2 < 0.40 430 16. < 0.40 2500 97.4 ug/m3 < 1.6 4.8 < 1.6 2900 86. < 1.0 6100 % Rec. Method TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 Date 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/02/14 04/01/14 RDL1 = ppbv , RDL2 = ug/m3 Note: Units are based on (STP) - Standard Temperature and Pressure The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. . Reported: 04/09/14 11:01 Revised: 04/09/14 15:49 Page 4 of 14 Dil. 2 2 2 50 2 2 400 2 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 REPORT OF ANALYSIS Troy Fowler / Katie Robertson Oregon Dept. of Env. Quality - ODEQ 700 SE Emigrant Ave., Suite 330 Pendleton, OR 97801 April 09, 2014 ESC Sample # : Date Received Description : : April 02, 2014 DEQ - Foreman's Cleaners Sample ID : OUTFLOW 1 Site ID : Project # : Collected By : Collection Date : L690826-04 15778-00/TASK 6 Jason R. Miles 03/27/14 09:41 Parameter Volatile Organics - TO-15 SIM 1,1-Dichloroethene cis-1,2-Dichloroethene trans-1,2-Dichloroethene Tetrachloroethylene Trichloroethylene Vinyl chloride 1,4-Bromofluorobenzene Cas# 75-35-4 156-59-2 156-60-5 127-18-4 79-01-6 75-01-4 460-00-4 Mol Wght RDL1 96.9 96.9 96.9 166 131 62.5 8.0 8.0 8.0 20. 8.0 8.0 RDL2 ppbv 32. 32. 32. 140 43. 20. < 8.0 77. < 8.0 1200 65. < 8.0 88.2 ug/m3 < 32. 310 < 32. 8100 350 < 20. % Rec. Method TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 TO-15 Date 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 RDL1 = ppbv , RDL2 = ug/m3 Note: Units are based on (STP) - Standard Temperature and Pressure The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. . Reported: 04/09/14 11:01 Revised: 04/09/14 15:49 Page 5 of 14 Dil. 400 400 400 1000 400 400 400 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier ________________ ___________ _______ ________________________________________ __________ __________ L690826-03 WG714145 SAMP 2-Propanol R2900981 J4 Page 6 of 14 Attachment B Explanation of QC Qualifier Codes Qualifier __________________ Meaning _______________________________________________________________________________ J4 The associated batch QC was outside the established quality control range for accuracy. Qualifier Report Information ESC utilizes sample and result qualifiers as set forth by the EPA Contract Laboratory Program and as required by most certifying bodies including NELAC. In addition to the EPA qualifiers adopted by ESC, we have implemented ESC qualifiers to provide more information pertaining to our analytical results. Each qualifier is designated in the qualifier explanation as either EPA or ESC. Data qualifiers are intended to provide the ESC client with more detailed information concerning the potential bias of reported data. Because of the wide range of constituents and variety of matrices incorporated by most EPA methods,it is common for some compounds to fall outside of established ranges. These exceptions are evaluated and all reported data is valid and useable "unless qualified as 'R' (Rejected)." Definitions Accuracy - The relationship of the observed value of a known sample to the true value of a known sample. Represented by percent recovery and relevant to samples such as: control samples, matrix spike recoveries, surrogate recoveries, etc. Precision - The agreement between a set of samples or between duplicate samples. Relates to how close together the results are and is represented by Relative Percent Differrence. Surrogate - Organic compounds that are similar in chemical composition, extraction, and chromotography to analytes of interest. The surrogates are used to determine the probable response of the group of analytes that are chemically related to the surrogate compound. Surrogates are added to the sample and carried through all stages of preparation and analyses. TIC - Tentatively Identified Compound: Compounds detected in samples that are not target compounds, internal standards, system monitoring compounds, or surrogates. Page 7 of 14 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Analyte Laboratory Blank Units % Rec Result Limit 1,1,1-Trichloroethane < .2 ppb 1,1,2,2-Tetrachloroethane < .2 ppb 1,1,2-Trichloroethane < .2 ppb 1,1,2-Trichlorotrifluoroethane < .2 ppb 1,1-Dichloroethane < .2 ppb 1,1-Dichloroethene < .2 ppb 1,2,4-Trichlorobenzene < .63 ppb 1,2,4-Trimethylbenzene < .2 ppb 1,2-Dibromoethane < .2 ppb 1,2-Dichlorobenzene < .2 ppb 1,2-Dichloroethane < .2 ppb 1,2-Dichloropropane < .2 ppb 1,2-Dichlorotetrafluoroethane < .2 ppb 1,3,5-Trimethylbenzene < .2 ppb 1,3-Butadiene < 2 ppb 1,3-Dichlorobenzene < .2 ppb 1,4-Dichlorobenzene < .2 ppb 1,4-Dioxane < .2 ppb 2,2,4-Trimethylpentane < .2 ppb 2-Butanone (MEK) < 1.25 ppb 2-Chlorotoluene < .2 ppb 2-Propanol < 1.25 ppb 4-Ethyltoluene < .2 ppb 4-Methyl-2-pentanone (MIBK) < 1.25 ppb Acetone < 1.25 ppb Allyl chloride < .2 ppb Benzene < .2 ppb Benzyl Chloride < .2 ppb Bromodichloromethane < .2 ppb Bromoform < .6 ppb Bromomethane < .2 ppb Carbon disulfide < .2 ppb Carbon tetrachloride < .2 ppb Chlorobenzene < .2 ppb Dibromochloromethane < .2 ppb Chloroethane < .2 ppb Chloroform < .2 ppb Chloromethane < .2 ppb cis-1,2-Dichloroethene < .2 ppb cis-1,3-Dichloropropene < .2 ppb Cyclohexane < .2 ppb Dichlorodifluoromethane < .2 ppb Ethanol < .63 ppb Ethylbenzene < .2 ppb Heptane < .2 ppb Hexachloro-1,3-butadiene < .63 ppb Isopropylbenzene < .2 ppb m&p-Xylene < .4 ppb Methyl Butyl Ketone < 1.25 ppb Methyl methacrylate < .2 ppb MTBE < .2 ppb Methylene Chloride < .2 ppb n-Hexane < .2 ppb Naphthalene < .63 ppb o-Xylene < .2 ppb Propene < .4 ppb Styrene < .2 ppb Tetrahydrofuran < .2 ppb Toluene < .2 ppb * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 8 of 14 Batch Date Analyzed WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Analyte Result TPH (GC/MS) Low Fraction trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethylene Trichlorofluoromethane Vinyl acetate Vinyl Bromide Vinyl chloride 1,4-Bromofluorobenzene < < < < < < < < 2-Butanone (MEK) 2-Propanol Acetone Tetrachloroethylene Trichloroethylene 1,4-Bromofluorobenzene < < < < < 2-Propanol Tetrachloroethylene 1,4-Bromofluorobenzene < 1.25 < .2 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dibromoethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon tetrachloride Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Ethylbenzene Tetrachloroethylene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethylene Vinyl acetate Vinyl chloride 1,4-Bromofluorobenzene < < < < < < < < < < < < < < < < < < < < < < Analyte Units Laboratory Blank Units % Rec 50 .2 .2 .2 .2 .2 .2 .2 ppb ppb ppb ppb ppb ppb ppb ppb % Rec. 1.25 1.25 1.25 .2 .2 ppb ppb ppb ppb ppb % Rec. ppb ppb % Rec. .02 .02 .03 .02 .02 .02 .03 .02 .02 .02 .04 .02 .03 .02 .02 .03 .02 .02 .03 .02 .02 .02 ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb % Rec. 93.20 97.30 95.00 91.80 Laboratory Control Sample Known Val Result Limit Batch Date Analyzed 60-140 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 03/31/14 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 12:58 60-140 WG713906 WG713906 WG713906 WG713906 WG713906 WG713906 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 04/01/14 12:58 12:58 12:58 12:58 12:58 12:58 60-140 WG714145 04/02/14 11:29 WG714145 04/02/14 11:29 WG714145 04/02/14 11:29 60-140 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 % Rec Limit Batch 70-130 70-130 70-130 70-130 70-130 70-130 59.7-155 70-130 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 1,1,1-Trichloroethane ppb 3.75 3.93 105. 1,1,2,2-Tetrachloroethane ppb 3.75 3.79 101. 1,1,2-Trichloroethane ppb 3.75 3.94 105. 1,1,2-Trichlorotrifluoroethane ppb 3.75 3.98 106. 1,1-Dichloroethane ppb 3.75 4.05 108. 1,1-Dichloroethene ppb 3.75 4.08 109. 1,2,4-Trichlorobenzene ppb 3.75 4.18 111. 1,2,4-Trimethylbenzene ppb 3.75 3.79 101. * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 9 of 14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 04/08/14 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 18:47 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Analyte Units Laboratory Control Sample Known Val Result % Rec 1,2-Dibromoethane ppb 3.75 3.98 106. 1,2-Dichlorobenzene ppb 3.75 3.76 100. 1,2-Dichloroethane ppb 3.75 4.11 110. 1,2-Dichloropropane ppb 3.75 3.99 106. 1,2-Dichlorotetrafluoroethane ppb 3.75 3.97 106. 1,3,5-Trimethylbenzene ppb 3.75 3.73 99.4 1,3-Butadiene ppb 3.75 4.20 112. 1,3-Dichlorobenzene ppb 3.75 3.86 103. 1,4-Dichlorobenzene ppb 3.75 3.90 104. 1,4-Dioxane ppb 3.75 4.21 112. 2,2,4-Trimethylpentane ppb 3.75 4.09 109. 2-Butanone (MEK) ppb 3.75 3.70 98.7 2-Chlorotoluene ppb 3.75 3.23 86.0 2-Propanol ppb 3.75 2.76 73.6 4-Ethyltoluene ppb 3.75 3.80 101. 4-Methyl-2-pentanone (MIBK) ppb 3.75 3.70 98.6 Acetone ppb 3.75 3.89 104. Allyl chloride ppb 3.75 4.19 112. Benzene ppb 3.75 4.01 107. Benzyl Chloride ppb 3.75 3.88 103. Bromodichloromethane ppb 3.75 3.93 105. Bromoform ppb 3.75 3.78 101. Bromomethane ppb 3.75 3.99 106. Carbon disulfide ppb 3.75 3.98 106. Carbon tetrachloride ppb 3.75 3.94 105. Chlorobenzene ppb 3.75 3.88 103. Dibromochloromethane ppb 3.75 3.92 104. Chloroethane ppb 3.75 4.13 110. Chloroform ppb 3.75 3.96 106. Chloromethane ppb 3.75 4.18 111. cis-1,2-Dichloroethene ppb 3.75 4.12 110. cis-1,3-Dichloropropene ppb 3.75 4.04 108. Cyclohexane ppb 3.75 4.07 109. Dichlorodifluoromethane ppb 3.75 3.92 104. Ethanol ppb 3.75 3.98 106. Ethylbenzene ppb 3.75 3.87 103. Heptane ppb 3.75 4.22 112. Hexachloro-1,3-butadiene ppb 3.75 3.61 96.2 Isopropylbenzene ppb 3.75 3.82 102. m&p-Xylene ppb 7.5 7.59 101. Methyl Butyl Ketone ppb 3.75 3.61 96.2 Methyl methacrylate ppb 3.75 3.83 102. MTBE ppb 3.75 3.76 100. Methylene Chloride ppb 3.75 3.98 106. n-Hexane ppb 3.75 4.17 111. Naphthalene ppb 3.75 3.84 102. o-Xylene ppb 3.75 3.88 103. Propene ppb 3.75 5.12 136.* Styrene ppb 3.75 3.92 105. Tetrahydrofuran ppb 3.75 3.80 101. Toluene ppb 3.75 3.97 106. TPH (GC/MS) Low Fraction ppb 150 150. 100. trans-1,2-Dichloroethene ppb 3.75 4.18 112. trans-1,3-Dichloropropene ppb 3.75 4.06 108. Trichloroethylene ppb 3.75 4.01 107. Trichlorofluoromethane ppb 3.75 3.98 106. Vinyl acetate ppb 3.75 4.09 109. Vinyl Bromide ppb 3.75 3.99 106. Vinyl chloride ppb 3.75 4.08 109. * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 10 of 14 Limit Batch 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 62.2-137 70-130 51.3-144 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 52.6-145 70-130 70-130 55.7-144 70-130 70-130 36.5-155 70-130 70-130 70-130 70-130 53.4-158 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Laboratory Control Sample Known Val Result Analyte Units % Rec Limit Batch 1,4-Bromofluorobenzene 2-Butanone (MEK) 2-Propanol Acetone Tetrachloroethylene Trichloroethylene 1,4-Bromofluorobenzene ppb ppb ppb ppb ppb 3.75 3.75 3.75 3.75 3.75 4.54 3.35 4.64 4.28 4.46 103.0 121. 89.4 124. 114. 119. 104.0 60-140 70-130 62.2-137 70-130 70-130 70-130 60-140 WG713906 WG713906 WG713906 WG713906 WG713906 WG713906 2-Propanol Tetrachloroethylene 1,4-Bromofluorobenzene ppb ppb 3.75 3.75 2.60 3.03 69.4 80.8 105.0 62.2-137 70-130 60-140 WG714145 WG714145 WG714145 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dibromoethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon tetrachloride Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Ethylbenzene Tetrachloroethylene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethylene Vinyl acetate Vinyl chloride 1,4-Bromofluorobenzene ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 .5 0.467 0.414 0.488 0.493 0.426 0.479 0.512 0.372 0.471 0.467 0.422 0.485 0.476 0.463 0.499 0.478 0.457 0.468 0.508 0.465 0.613 0.439 93.3 82.8 97.7 98.5 85.2 95.7 102. 74.5 94.2 93.4 84.3 97.0 95.2 92.5 99.8 95.7 91.4 93.6 102. 93.0 123. 87.8 95.50 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 60-140 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 Analyte Units Laboratory Control Sample Duplicate Result Ref %Rec Limit RPD 1,1,1-Trichloroethane ppb 3.93 3.93 105. 70-130 0.110 1,1,2,2-Tetrachloroethane ppb 4.12 3.79 110. 70-130 8.22 1,1,2-Trichloroethane ppb 4.12 3.94 110. 70-130 4.41 1,1,2-Trichlorotrifluoroethane ppb 3.93 3.98 105. 70-130 1.19 1,1-Dichloroethane ppb 4.09 4.05 109. 70-130 0.940 1,1-Dichloroethene ppb 4.08 4.08 109. 70-130 0.130 1,2,4-Trichlorobenzene ppb 4.35 4.18 116. 59.7-155 3.98 1,2,4-Trimethylbenzene ppb 4.13 3.79 110. 70-130 8.39 1,2-Dibromoethane ppb 4.14 3.98 110. 70-130 3.84 1,2-Dichlorobenzene ppb 4.02 3.76 107. 70-130 6.66 1,2-Dichloroethane ppb 4.18 4.11 111. 70-130 1.51 1,2-Dichloropropane ppb 4.21 3.99 112. 70-130 5.27 1,2-Dichlorotetrafluoroethane ppb 3.97 3.97 106. 70-130 0.0200 1,3,5-Trimethylbenzene ppb 4.14 3.73 110. 70-130 10.6 1,3-Butadiene ppb 4.25 4.20 113. 70-130 1.20 1,3-Dichlorobenzene ppb 4.07 3.86 108. 70-130 5.28 1,4-Dichlorobenzene ppb 4.11 3.90 110. 70-130 5.37 1,4-Dioxane ppb 4.38 4.21 117. 70-130 4.13 * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 11 of 14 Limit Batch 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Analyte Units 2,2,4-Trimethylpentane 2-Butanone (MEK) 2-Chlorotoluene 2-Propanol 4-Ethyltoluene 4-Methyl-2-pentanone (MIBK) Acetone Allyl chloride Benzene Benzyl Chloride Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Dibromochloromethane Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Cyclohexane Dichlorodifluoromethane Ethanol Ethylbenzene Heptane Hexachloro-1,3-butadiene Isopropylbenzene m&p-Xylene Methyl Butyl Ketone Methyl methacrylate MTBE Methylene Chloride n-Hexane Naphthalene o-Xylene Propene Styrene Tetrahydrofuran Toluene TPH (GC/MS) Low Fraction trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethylene Trichlorofluoromethane Vinyl acetate Vinyl Bromide Vinyl chloride 1,4-Bromofluorobenzene ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb Laboratory Control Sample Duplicate Result Ref %Rec 4.09 4.07 4.08 2.78 4.21 4.11 4.11 4.17 4.08 4.17 4.07 4.08 3.96 3.91 3.94 4.06 4.00 4.10 3.99 4.16 4.11 4.19 4.02 3.86 4.09 4.20 4.25 3.97 4.16 8.26 3.90 4.15 4.03 3.94 4.16 4.14 4.16 4.97 4.22 4.17 4.14 157. 4.13 4.14 4.06 3.96 4.36 3.94 4.06 4.09 3.70 3.23 2.76 3.80 3.70 3.89 4.19 4.01 3.88 3.93 3.78 3.99 3.98 3.94 3.88 3.92 4.13 3.96 4.18 4.12 4.04 4.07 3.92 3.98 3.87 4.22 3.61 3.82 7.59 3.61 3.83 3.76 3.98 4.17 3.84 3.88 5.12 3.92 3.80 3.97 150. 4.18 4.06 4.01 3.98 4.09 3.99 4.08 109. 109. 109. 74.0 112. 110. 110. 111. 109. 111. 108. 109. 106. 104. 105. 108. 107. 109. 106. 111. 110. 112. 107. 103. 109. 112. 113. 106. 111. 110. 104. 111. 108. 105. 111. 110. 111. 132* 112. 111. 110. 104. 110. 110. 108. 106. 116. 105. 108. 104.0 Limit RPD Limit Batch 70-130 70-130 70-130 62.2-137 70-130 51.3-144 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 52.6-145 70-130 70-130 55.7-144 70-130 70-130 36.5-155 70-130 70-130 70-130 70-130 53.4-158 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 60-140 0.0600 9.59 23.3 0.780 10.1 10.6 5.48 0.620 1.70 7.15 3.60 7.56 0.620 1.71 0.240 4.75 2.03 0.760 0.790 0.390 0.130 3.70 1.25 1.53 2.69 8.08 0.870 9.50 8.63 8.46 7.94 8.00 7.09 1.14 0.270 7.70 7.02 2.97 7.33 9.40 4.21 4.30 1.27 1.79 1.24 0.530 6.55 1.40 0.450 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 WG713764 25 25 25 25 25 WG713906 WG713906 WG713906 WG713906 WG713906 WG713906 2-Butanone (MEK) ppb 4.76 4.54 127. 70-130 4.83 2-Propanol ppb 3.96 3.35 106. 62.2-137 16.7 Acetone ppb 4.90 4.64 130. 70-130 5.41 Tetrachloroethylene ppb 4.57 4.28 122. 70-130 6.65 Trichloroethylene ppb 4.78 4.46 128. 70-130 6.98 1,4-Bromofluorobenzene 103.0 60-140 * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 12 of 14 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 Laboratory Control Sample Duplicate Result Ref %Rec Analyte Units 2-Propanol Tetrachloroethylene 1,4-Bromofluorobenzene ppb ppb 2.31 2.92 2.60 3.03 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dibromoethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon tetrachloride Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Ethylbenzene Tetrachloroethylene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethylene Vinyl acetate Vinyl chloride 1,4-Bromofluorobenzene ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb 0.467 0.413 0.421 0.497 0.452 0.423 0.413 0.382 0.462 0.467 0.411 0.486 0.355 0.467 0.409 0.463 0.419 0.476 0.419 0.419 0.612 0.358 0.467 0.414 0.488 0.493 0.426 0.479 0.512 0.372 0.471 0.467 0.422 0.485 0.476 0.463 0.499 0.478 0.457 0.468 0.508 0.465 0.613 0.439 Limit RPD Limit Batch 62* 78.0 104.0 62.2-137 70-130 60-140 12.0 3.49 25 25 WG714145 WG714145 WG714145 93.0 82.0 84.0 99.0 90.0 84.0 83.0 76.0 92.0 93.0 82.0 97.0 71.0 93.0 82.0 93.0 84.0 95.0 84.0 84.0 122. 72.0 100.0 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 70-130 60-140 0.0400 0.300 14.7 0.870 5.84 12.4 21.4 2.41 1.87 0.0800 2.51 0.0800 29.2* 0.870 19.8 3.21 8.75 1.75 19.2 10.3 0.0300 20.3 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 WG714845 Batch number /Run number / Sample number cross reference WG713764: WG713906: WG714145: WG714845: R2899815: R2900321: R2900981: R2903044: L690826-01 02 03 L690826-01 02 03 L690826-02 03 L690826-04 * * Calculations are performed prior to rounding of reported values. * Performance of this Analyte is outside of established criteria. For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' Page 13 of 14 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Oregon Dept. of Env. Quality - ODEQ Troy Fowler / Katie Robertson 700 SE Emigrant Ave., Suite 330 Quality Assurance Report Level II Pendleton, OR 97801 April 09, 2014 L690826 The data package includes a summary of the analytic results of the quality control samples required by the SW-846 or CWA methods. The quality control samples include a method blank, a laboratory control sample, and the matrix spike/matrix spike duplicate analysis. If a target parameter is outside the method limits, every sample that is effected is flagged with the appropriate qualifier in Appendix B of the analytic report. Method Blank - an aliquot of reagent water carried through the entire analytic process. The method blank results indicate if any possible contamination exposure during the sample handling, digestion or extraction process, and analysis. Concentrations of target analytes above the reporting limit in the method blank are qualified with the "B" qualifier. Laboratory Control Sample - is a sample of known concentration that is carried through the digestion/extraction and analysis process. The percent recovery, expressed as a percentage of the theoretical concentration, has statistical control limits indicating that the analytic process is "in control". If a target analyte is outside the control limits for the laboratory control sample or any other control sample, the parameter is flagged with a "J4" qualifier for all effected samples. Matrix Spike and Matrix Spike Duplicate - is two aliquots of an environmental sample that is spiked with known concentrations of target analytes. The percent recovery of the target analytes also has statistical control limits. If any recoveries that are outside the method control limits, the sample that was selected for matrix spike/matrix spike duplicate analysis is flagged with either a "J5" or a "J6". The relative percent difference (%RPD) between the matrix spike and the matrix spike duplicate recoveries is all calculated. If the RPD is above the method limit, the effected samples are flagged with a "J3" qualifier. Page 14 of 14