Wetlands Delineation Report

Appendix F
Delineation of Potential Jurisdictional Wetlands
and “Other Waters” under Section 404 of the
Clean Water Act
Delineation of Potential Jurisdictional Wetlands
and “Other Waters” under Section 404 of the
Clean Water Act
FOUNTAINGROVE LODGE
SANTA ROSA, SONOMA COUNTY
CALIFORNIA
Prepared For:
Mr. Steve McCullagh
Aegis Senior Living
220 Concourse Blvd.
Santa Rosa, California 95403
WRA Contact:
Tom Fraser
[email protected]
Date:
May 2007
2169-G Ea st Fra nc isc o Blvd ., Sa n Ra fa e l, C A 94901 (415) 454-8868 te l (415) 454-0129 fa x info @w ra -c a .c o m w w w .w ra -c a .c o m
TABLE OF CONTENTS
1.0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Study Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Regulatory Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 METHODS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Potential Section 404 Wetlands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 “Other Waters” of the U.S.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Areas Exempt from Section 404 Jurisdiction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
5
5
3.0 STUDY AREA DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.0 RESULTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Potential Section 404 Wetlands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 “Other Waters” of the U.S.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Areas Exempt from Section 404 Jurisdiction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
8
9
9
5.0 POTENTIAL CORPS OF ENGINEERS JURISDICTION. . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.0 REFERENCES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
LIST OF FIGURES
Figure 1. Location Map of Fountaingrove Lodge site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 2. Soils Map of the Fountaingrove Lodge site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LIST OF TABLES
Table 1. Summary of Section 404 Jurisdiction in the Study Area. . . . . . . . . . . . . . . . . . . . . . . . 9
LIST OF APPENDICES
Appendix A
Appendix B
Appendix C
Appendix D
Corps Delineation Data Forms
Potential Jurisdictional Areas Map
List of Plant Species Observed within the Study Area
Study Area Photographs
i
1.0 INTRODUCTION
1.1 Study Background
The Fountaingrove Lodge project site (Study Area) is located in the Santa Rosa USGS 7.5 minute
quadrangle, north of Fountaingrove Parkway (also known as Fountain Grove Parkway), northeast
of Santa Rosa in central Sonoma County, California (Figure 1). The Study Area is comprised of
approximately 9.85 acres located along Thomas Lake Harris Drive, to be developed as
Fountaingrove Lodge. On June 16, 2006, Amy Parravano and Ann Huber of WRA Inc. conducted
a routine wetland delineation to determine the presence of potential wetlands and waters subject
to federal jurisdiction under Section 404 of the Clean Water Act within the Study Area.
Supplemental data was collected on April 9, 2007 by Julie Rentner of WRA to verify the findings
of the original delineation and clarify the wetland status of two problem areas. Supplemental data
was collected using the guidelines set forth in the Interim Regional Supplement to the Corps of
Engineers Wetland Delineation Manual: Arid West Region (US Army Corps of Engineers, 2006).
This report presents the results of this delineation.
1.2 Regulatory Background
Section 404 of the Clean Water Act
Section 404 of the Clean Water Act gives the U.S. Environmental Protection Agency (EPA) and
the U.S. Army Corps of Engineers (Corps) regulatory and permitting authority regarding discharge
of dredged or fill material into “navigable waters of the United States”. Section 502(7) of the Clean
Water Act defines navigable waters as “waters of the United States, including territorial seas.”
Section 328 of Chapter 33 in the Code of Federal Regulations defines the term “waters of the
United States” as it applies to the jurisdictional limits of the authority of the Corps under the Clean
Water Act. A summary of this definition of “waters of the U.S.” in 33 CFG 328.3 includes (1) waters
used for commerce and subject to tides; (2) interstate waters and wetlands; (3) “other waters” such
as intrastate lakes, rivers, streams, and wetlands; (4) impoundments of waters; (5) tributaries of
waters; (6) territorial seas; and (7) wetlands adjacent to waters. Therefore, for purposes of the
determining Corps jurisdiction under the Clean Water Act, “navigable waters” as defined in the
Clean Water Act are the same as “waters of the U.S.” defined in the Code of Federal Regulations
above.
The limits of Corps jurisdiction under Section 404 as given in 33 CFR Section 328.4 are as follows:
(a) Territorial seas: three nautical miles in a seaward direction from the baseline; (b) Tidal waters
of the U.S.: high tide line or to the limit of adjacent non-tidal waters; ©) Non-tidal waters of the U.S.:
ordinary high water mark or to the limit of adjacent wetlands; (d) Wetlands: to the limit of the
wetland.
Section 328.3 of the Federal Code of Regulations defines wetlands as:
"Those areas that are inundated or saturated by surface or ground water at a
frequency and duration sufficient to support, and that under normal circumstances
do support, a prevalence of vegetation typically adapted for life in saturated soil
conditions. Wetlands generally include swamps, marshes, bogs, and similar areas."
(EPA, 40 CFR 230.3 and CE, 33 CFR 328.3)
1
0
1
2
4 Miles
Windsor
Fountaingrove
Lodge
101
Fountaingrove
Lake
Santa Rosa
Fountaingrove
Lodge
Fountaingrove
Lake
Lak e
Tho m as r .
Har ris D
101
Fou ntain
y.
gro ve Pk
M
en
do
n
ci
o
A
.
ve
Figure 1. Location Map of
Fountaingrove Lodge Site
Fountaingrove Lodge
Santa Rosa, California
0
500 1,000
Feet
2,000
Date: February 2007
Basemap: USGS DRG
Map B y: Michael Rochelle
Filepath: l:\ACAD2000\15150\GIS\ArcMap\
StudyArea2.mxd
The delineation study determined the presence or absence of wetland indicators used by the U.S.
Army Corps of Engineers in making a jurisdictional determination. The three criteria used to
delineate wetlands are the presence of: (1) hydrophytic vegetation, (2) wetland hydrology, and (3)
hydric soils. According to the Corps Manual:
"....[E]vidence of a minimum of one positive wetland indicator from each parameter
(hydrology, soil, and vegetation) must be found in order to make a positive wetland
delineation."
2.0 METHODS
Prior to conducting field surveys, available reference materials were reviewed, including the Soil
Survey of Sonoma County (USDA, NRCS 1972), the Santa Rosa USGS 7.5' quadrangle, and
available aerial photographs of the site. A focused evaluation of indicators of wetlands and waters
was performed in the Study Area on June 16, 2006. The methods used in this study to delineate
jurisdictional wetlands and waters are based on the U.S. Army Corps of Engineers Wetlands
Delineation Manual (Corps Manual; Environmental Laboratory 1987). The routine method for
wetland delineation described in the Corps Manual was used to identify areas potentially subject
to Corps Section 404 jurisdiction within the Study Area. A general description of the Study Area,
including plant communities present, topology and land use was also generated during the
delineation visit. The methods for evaluating the presence of wetlands and other waters of the
United States employed during the site visit are described in detail below.
2.1 Potential Section 404 Wetlands
Data on vegetation, hydrology, and soils collected at sample points during the delineation site visit
and supplemental data collection were reported on standard Corps data forms. Sample points
were selected based on the presence of at least one wetland indicator, with paired sample points
located in obvious upland areas adjacent to potential wetland areas. Once an area was determined
to be a potential jurisdictional wetland or other water, its boundaries were delineated using submeter accuracy Trimble GeoXT handheld GPS recievers and mapped on an aerial photograph.
The areas of potential jurisdictional wetlands were measured digitally using ArcGIS software. This
delineation occurred in June, during the dry season, and considerations were made in the
determination of wetland status regarding the expected lack of visible ponding and soil saturation
due to elevated evapotranspiration, the possible absence of living hydrophytic vegetation that may
have been present during the rainy season, and obscured wetland hydrology caused by extended
dry periods prior to the site visit. Additionally, problem areas were revisited in April 2007 to
determine their wetland status during the rainy season. Indicators described in the Corps Manual
that were used to make wetland determinations at each sample point in the Study Area are
summarized below.
Vegetation
Plant species, both living and dead or desicated, identified on the project site were assigned a
wetland status according to the U.S. Fish and Wildlife Service list of plant species that occur in
wetlands (Reed 1988). This wetland classification system is based on the expected frequency of
occurrence in wetlands as follows:
3
OBL
FACW(±)
FAC
FACU
NL
Always found in wetlands
Usually found in wetlands
Equal in wetland or non-wetlands
Usually found in non-wetlands
Not listed (upland)
>99% frequency
67-99%
34-66%
1-33%
<1%
Plants with OBL, FACW, and FAC classifications are classified as hydrophytic vegetation in the
Corps Manual methodology. When greater than 50 percent of the dominant plant species have
an indicator status of OBL, FACW, and/or FAC, the hydrophytic vegetation criterion is met.
Dominant herbaceous plant species are those having more than 20 percent relative areal cover.
Hydrology
The Corps jurisdictional wetland hydrology criterion is satisfied if an area is inundated or saturated
for a period sufficient to create anoxic soil conditions during the growing season (minimum of 18
consecutive days in the San Francisco Bay Area). Evidence of wetland hydrology can include
direct evidence (primary indicators), such as visible inundation or saturation, drift lines, and surface
sediment deposits (including algal mats), or indirect indicators (secondary indicators), such as
oxidized root channels and the FAC-neutral test. If indirect or secondary indicators are used, at
least two secondary indicators must be present to conclude that an area has wetland hydrology.
Primary and secondary hydrology indicators were also used to determine if areas surrounding each
sample point in the Study Area satisfied the Corps hydrology criterion.
Soils
The Natural Resource Conservation Service (NRCS) defines a hydric soil as:
“A hydric soil is a soil that formed under conditions of saturation, flooding, or
ponding long enough during the growing season to develop anaerobic conditions
in the upper part.”
(Federal Register July 13, 1994, US
Department of Agriculture, Natural Resource
Conservation Service.)
Soils formed over long periods of time under wetland (anaerobic) conditions often possess
characteristics that indicate they meet the definition of hydric soils regardless of the seasonal timing
of the observation. Hydric soils generally have a characteristic low matrix chroma color, designated
0, 1, or 2, used to identify them as hydric. Chroma designations are determined by comparing a
soil sample with a standard Munsell soil color chart (GretagMacbeth 2000). Soils with a chroma
of 0 or 1 are considered hydric; soils with a chroma of 2 must also have mottles to be considered
hydric. Soil profiles at each sample point in the Study Area were described to include horizon
depths, color, redoximorphic features, and texture to determine if the soils satisfy the Corps criteria
for hydric soils. The NRCS manual Field Indicators of Hydric Soils in the United States (USDA,
NRCS, 2002) was also used as a guide for determining hydric soils in the Study Area.
4
2.2 “Other Waters” of the U.S.
Areas that are inundated for sufficient duration and depth to exclude growth of hydrophytic
vegetation, such as lakes and ponds, or convey water, such as streams, are also subject to Section
404 jurisdiction. In the San Francisco Bay Region, these “waters” can include intermittent and
ephemeral streams, as well as lakes and rivers. Areas delineated as non-tidal waters are
characterized by an ordinary high water (OHW) mark, defined as:
...that line on the shore established by the fluctuations of water and indicated by
physical characteristics such as clear, natural line impresses on the bank, shelving,
changes in the characteristics of the soil, destruction of terrestrial vegetation, the
presence of litter and debris, or other appropriate means that consider the
characteristics of the surrounding areas.
Federal Register Vol. 51, No. 219,
Part 328.3 (d). November 13, 1986.
Non tidal waters are identified in the field by the presence of a defined river or stream bed, a bank,
and evidence of the flow of water, or by the absence of emergent vegetation in ponds or lakes.
Corps jurisdiction of waters in non-tidal areas extends to the ordinary high water (OHW) mark. The
Study Area was evaluated for the presence of non tidal waters, and if determined to be present,
waters were delineated with sub-meter accuracy Trimble GeoXT handheld GPS recievers, and
mapped on aerial photographs.
2.3 Areas Exempt from Section 404 Jurisdiction
Some areas that meet the technical criteria for wetlands or waters may not be jurisdictional under
the Clean Water Act. Included in this category are some man-induced wetlands, which are areas
that have developed at least some characteristics of naturally occurring wetlands due to either
intentional or incidental human activities. Examples of man-induced wetlands include, but are not
limited to, irrigated wetlands, impoundments, or drainage ditches excavated in uplands, wetlands
resulting from filling of formerly deep water habitats, dredged material disposal areas, and wetlands
resulting from stream channel realignment.
In addition, some isolated wetlands and waters may also be considered outside of Corps
jurisdiction as a result of the Supreme Court’s decision in Solid Waste Agency of Northern Cook
County (SWANCC) v. United States Army Corps of Engineers (531 U.S. 159 (2001)). Isolated
wetlands and waters are those areas that do not have a surface or groundwater connection to, and
are not adjacent to a navigable “Waters of the U.S.”, and do not otherwise exhibit an interstate
commerce connection.
3.0 STUDY AREA DESCRIPTION
The Study Area is approximately 9.85 acres and is located in the Santa Rosa 7.5 minute USGS
quadrangle in Santa Rosa, Sonoma County, California. It is bounded by the Fountaingrove Golf
Course to the east, Clover Leaf Ranch and a City Park Site to the west, and residential housing to
the north and south. The site elevation is approximately 450 feet and the soils are predominantly
volcanic in nature. The majority of the Study Area was historically used as rural residential. Land
5
use for the Study Area is currently managed as an undeveloped portion of the golf course. No
portions of the Study Area are located within the 100-year floodplain (www.fema.gov).
Vegetation
Vegetation within the Study Area consist primarily of oak woodlands with scattered coyote brush
(Baccharis pilularis) and ruderal, grass and forb understory. Other vegetation communities include
intervening ruderal annual grassland and a small area of riparian vegetation along a stream in the
southern corner of the Study Area. Dominant vegetation in oak woodlands is composed of three
oak species, coast live oak (Quercus agrifolia), California black oak (Quercus kelloggii) and blue
oak (Quercus douglasii), as well as other tree species. Dominant vegetation in grasslands include
slender wild oat (Avena barbata), Harding grass (Phalaris aquatica), soft chess (Bromus
hordeaceus), and Italian ryegrass (Lolium multiflorum). Riparian vegetation included scattered
cattail (Typha latifolia), rush (Juncus sp.), and knotweed (Polygonum sp.) individuals growing in the
stream bed, as well as a few small ash trees (Fraxinus latifolia) on the upper banks.
Hydrology
The principal natural hydrological source for the Study Area is precipitation with localized surface
run-off from the upland hillsides. An unnamed stream is located in the southern portion of the
Study Area. The principal source of flow for this stream is Fountaingrove Lake to the east. Three
man-made roadside ditches run along the western edge of the Study Area. The two northern
ditches enter culverts running beneath Thomas Lake Harris Drive and eventually discharge into the
roadside storm drain system. The southern ditch dissipates into a flat area approximately 50 feet
from the stream described above and there was no evidence of a surface connection between this
ditch and the stream.
Soils
The Sonoma County Soil Survey (USDA 1972) indicates that the Study Area has five native soil
types: Goulding cobbly clay loam, 15 to 30 percent slopes; Raynor clay, 9 to 15 percent slopes;
Spreckels loam, 15-30 percent slopes; Felta very gravelly loam, 15 to 30 percent slopes; and Felta
very gravelly loam 30 to 50 percent slopes. These soil types are described in detail below and are
shown in Figure 2.
Goulding cobbly clay loam, 15 to 30 percent slopes. This Goulding series consists of welldrained clay loams, underlain by metamorphosed basic igneous and weathered andesitic basalt
of old volcanic formations at a depth of 12 to 24 inches. This soil series occurs on mountainous
uplands. In a typical profile the surface layer is brown and dark-brown, clay loam about 11 inches
thick. The surface layer of this soil contains as much as 25 percent cobblestones and stones and
ranges in depth from 16 to 20 inches. The subsoil is dark-brown, very gravelly clay loam about 11
inches thick. Fractured basalt occurs at a depth of about 22 inches. Included in this map unit are
small areas of Boomer loam, Spreckels loam, and Toomes loam. Runoff is medium to rapid, and
the hazard of erosion is moderate to high. This soil is mainly used for range purposes. In the
Study Area, Goulding cobbly clay loam occurs in two portions in the center and southern edge of
the parcel. Inclusions of this soil on upland slopes are listed as hydric in Sonoma County (NRCS
1992).
6
Fountaingrove Lodge (9.85 acres)
FaF
FaE: FELTA VERY GRAVELLY LOAM, 15 TO 30 PERCENT SLOPES (Argixerolls)
FaF: FELTA VERY GRAVELLY LOAM, 30 TO 50 PERCENT SLOPES (Argixerolls)
FaF
GlE: GOULDING COBBLY CLAY LOAM, 15 TO 30 PERCENT SLOPES (Xerochrepts)
RaD: RAYNOR CLAY, 9 TO 15 PERCENT SLOPES (Pelloxererts)
SkD: SPRECKELS LOAM, 9 TO 15 PERCENT SLOPES (Palexeralfs)
SkE: SPRECKELS LOAM, 15 TO 30 PERCENT SLOPES (Palexeralfs)
W: Water
RaD
SkD
FaE
GlE
W
SkE
W
FaF
FaE
SkE
SkE
Figure 2. Map of Soils
Within Fountaingrove Lodge
The Oaks at Fountaingrove
Santa Rosa, California
SkE
0
125
250
Feet
500
Date: May 2007
Map By: Michael Rochelle
Filepath: l:\ACAD2000\15150\GIS\ArcMap\
Soils.mxd
Raynor clay, 9 to 15 percent slopes. The Raynor series consists of well-drained clays underlain
by volcanic and andesitic rocks at a depth of 20 to 60 inches. These soils are on rolling hills. In
a typical profile the surface layer is black and olive-gray, slightly acid to moderately alkaline clay
about 47 inches thick. At a depth of about 47 inches is pale-olive, very cobbly and stony clay.
Basaltic cobblestones and stones are at a depth of 56 inches. This soil type is only 20 to 40 inches
deep. Included in this map unit are small areas of Cotati fine sandy loam, Diablo clay, and
Goulding cobbly clay loam. This soil is not listed as hydric in the Sonoma County hydric soils list
(NRCS 1992). Raynor clay is primarily located along the northern edge of the Study Area.
Felta very gravelly loam, 15 to 30 percent slopes. The Felta series consists of well-drained very
gravelly loams that have a very gravelly clay loam subsoil. These soils formed from material from
volcanic tuffs mixed with uplifted river sediment and metamorphosed basic rock. In a typical profile
the surface layer is grayish-brown, very gravelly loam about 5 inches thick. At a depth of about 24
inches is mixed volcanic tuff, river sediment, metamorphosed basic rock, and grayish-brown,
strongly acid, sandy clay loam. This soil type is 50 to 60 percent gravel by volume throughout the
profile. Included in this map unit are small areas of Guienoc gravelly silt loam, Spreckels loam, and
Toomes rocky loam. This soil is not listed as hydric in the Sonoma County hydric soils list (NRCS
1992). Felta very gravelly loam, 15 to 30 percent slopes is primarily located along the northern
edge of the Study Area.
Felta very gravelly loam, 30 to 50 percent slopes. This soil type is similar to Felta very gravelly
loam, 15 to 30 percent slopes, but has more rapid runoff and higher erosion hazard. The depth
to sub-stratum is 14 to 18 inches, and there is less clay in the subsoil on these steeper slopes.
This soil is not listed as hydric in the Sonoma County hydric soils list (NRCS 1992). Felta very
gravelly loam, 30 to 50 percent slopes is located in a small region along the southwestern edge of
the Study Area.
Spreckels loam, 15-30 percent slopes. The Spreckels series consists of well-drained loams that
have a clay subsoil. They are underlain by volcanic tuffs mixed with uplifted river sediment and
weathered, basic igneous rock. In a typical profile the surface layer is grayish brown loam and light
gray clay loam. This layer is about 18 inches thick. The subsoil is brown and pale brown clay
about 19 inches thick. The substratum is about 37 inches deep and consists of clay. This soil type
occurs on uplands with short and abrupt slopes. This soil is not listed as hydric in the Sonoma
County hydric soils list (NRCS 1992). In the Study Area, Spreckels loam occurs in two portions in
the center of the parcel.
4.0 RESULTS
Vegetation, soils and hydrology data collected during the delineation site visit are reported on
standard Corps data forms in Appendix A. Potential jurisdictional areas are described in the
following sections and are shown on the enclosed map in Appendix B. Plant species observed
during the wetland delineation are listed in Appendix C. Potential jurisdictional areas found in the
Study Area are discussed below.
4.1 Potential Section 404 Wetlands
There were no potential Section 404 jurisdictional wetlands observed within the Study Area.
8
Sampled areas did not support a predominance of hydrophytic vegetation; soils did not exhibit
hydric indicators; and no evidence of wetland hydrology was observed. Datasheets are provided
in Appendix A.
4.2 “Other Waters” of the U.S.
An unnamed stream runs along the southern portion of the Study Area. Waters from
Fountaingrove Lake flow into the stream within the Study Area, which continues west to Thomas
Lake Harris Drive. The stream within the Study Area is approximately 131 feet long and averages
4 feet in width. Waters from the stream continue off the property and eventually flow into the Santa
Rosa Flood Control Channel, which is connected to Mark West Creek, a tributary to the Russian
River.
4.3 Areas Exempt from Section 404 Jurisdiction
Three non-jurisdictional man-made road-side ditches dug in uplands were found along the western
boundary of the Study Area along Thomas Lake Harris Drive (Appendix B). These features ranged
in width from one to five feet. Typical vegetation included upland and wetland-adapted species
such as Harding grass (Phalaris aquatica), poison oak (Toxicodendron diversiloba), and slender
oat grass (Avena barbata). They were constructed to transport overland flow from the adjacent
hillsides, and do not appear to conduct waters from potentially jurisdictional wetlands or “others
waters”. Two of the ditches lead to culverts which flow beneath Thomas Lake Harris Drive and
onto adjacent upland areas, eventually draining into the roadside storm drain system. A third ditch
at the southern end of the Study Area did not have a culvert at either end, was located
approximately 50 feet away from the stream, and did not appear to convey surface water into the
stream.
5.0 POTENTIAL CORPS OF ENGINEERS JURISDICTION
The Study Area contains approximately 131 linear feet (0.012 acres) of potentially jurisdictional
“other waters”.
Table 1. Summary of Section 404 Jurisdiction in the Study Area.
Waters Type
Intermittent Drainage
Stormwater Ditch
Total Waters:
Potential Jurisdictional
Length (Linear Feet/ Acres)
Potentially Isolated Area
(Linear Feet/ Acres)
131/0.012
0
0
710/0.034
131/0.012
0
The conclusion of this delineation is based on conditions observed at the time of the field survey
conducted on June 16, 2006 and during the supplemental data collection on April 9, 2007.
9
6.0 REFERENCES
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Department
of the Army, Waterways Experiment Station, Vicksburg, Mississippi 39180-0631.
Federal Register. November 13, 1986. Department of Defense, Corps of Engineers, Department
of the Army, 33 CFR Parts 320 through 330, Regulatory Programs of the Corps of
Engineers; Final Rule. Vol. 51, No. 219; page 41217.
GretagMacBeth. 2000. Munsell Soil Color Charts.
Reed, P. B., Jr. 1988. National list of plant species that occur in wetlands: California (Region 0).
U.S. Fish and Wildlife Service Biological Report 88 (26.10).
Sawyer, J. and T. Keeler-Wolf. 1995. A Manual of California Vegetation. California Native Plant
Society, Sacramento, California.
U.S. Army Corps of Engineers. 2006. Interim Regional Supplement to the Corps of Engineers
Wetland Delineation Manual: Arid West Region. ed. J.S. Wakeley, R.W. Lichvar, and C.V.
Noble. ERDC/EL TR 06-16. Vicksburg, MS: U.S. Army Engineer Research and
Development Center.
U.S. Department of Agriculture, Natural Resources Conservation Service, Sonoma County Field
Office. 1992. Official List of Hydric Soil Map Units for Sonoma County, California.
U.S. Department of Agriculture, Soil Conservation Service. 1972. Soil Survey of Sonoma County,
California. In cooperation with the University of California Agricultural Experiment Station.
U.S. Geological Survey. 1980. Santa Rosa quadrangle. 7.5 minute topographic map.
10
APPENDIX A - CORPS DELINEATION DATA FORMS
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site:
Fountaingrove Lodge
Applicant/Owner:
Investigator:
Aegis Senior Living
W R A Inc., Amy Parravano, Ann Huber
Date :
6/16/2006
County :
Sonoma
State :
California
Do Normal Circumstances exist on the site?
Yes
No
Community ID:
Is the site significantly disturbed (Atypical Situation)?
Yes
No
Transect ID:
Is the area a potential Problem Area?
(if needed explain on reverse.)
Yes
No
Plot ID:
upland
1
VEGETATION
Dominant Plant Species
Stratum
Indicator
Sub-dominant Plant Species
1. Quercus kelloggii
TREE
NL
1.
2. Quercus agrifolia
TREE
NL
2.
3. Carduus pycnocephalus
HERB
NL
3.
4. Briza maxima
HERB
NL
4.
5. Avena barbata
HERB
NL
5.
6.
6.
7.
7.
8.
8.
Percent of Dominant Species that are OBL, FACW and/or FAC:
(excluding FAC-)
Stratum
Indicator
0%
Remarks : Does not meet vegetation requirement
HYDROLOGY
Wetland Hydrology Indicators :
Primary Indicators :
Recorded Data
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X
Inundated
Saturated in Upper 12 Inches
Water Marks
Drift Lines
Sediment Deposits
Drainage patterns In Wetlands
No Recorded Data Available
Field Observations :
Depth of Surface Water :
none
(in.)
Depth to Free Water in Pit : >16
(in.)
>16
(in.)
Depth To Saturated Soil :
Secondary Indicators (2 or more required) :
Oxidized Root Channels In Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC-Neutral test
Other (Explain In Remarks)
Hydrology Remarks : No indicators present; does not meet hydrology requirement
Plot ID:
1
SOILS
Map Unit Name
(Series and Phase) :
Goulding cobbly clay loam, 15-30% slope Drainage Class: somewhat excessively drained
Field Observations
Taxonomy (Subgroup) : Lithic Dystroxerepts
Yes
No
Confirm Mapped Type?
Profile Description:
Depth
(Inches)
0-16
Horizon
Matrix Color
(Munsell Moist)
A/B
10 YR 3/2
Hydric Soil Indicators :
Histosol
Histic Epipedon
Sulfidic Odor
Aquic Moisture Regime
Reducing Conditions
Gleyed or Low-Chroma Colors
Mottle Colors
(Munsell Moist)
Mottle
Abundance / Contrast
none
Texture, Concretions,
Structure, etc.
Clay loam
Concretions
High Organic Content In Surface Layer In Sandy Soils
Organic Streaking In Sandy Soils
Listed On Local Hydric Soils List
Listed On National Hydric Soils List
Other (Explain In Remarks)
Profile Remarks:
No hydric soil indicators; does not meet hydric soils requirement.
WETLAND DETERMINATION
Hydrophytic Vegetation Present?
Yes
No
Wetland Hydrology Present?
Yes
No
Hydric Soil Present ?
Yes
No
Is this Sampling Point Within a Wetland?
Yes
No
Remarks : Upland sample point, not a wetland
Approved By HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site:
Fountaingrove Lodge
Applicant/Owner:
Investigator:
Aegis Senior Living
W R A Inc., Amy Parravano, Ann Huber
Date :
6/16/2006
County :
Sonoma
State :
California
Do Normal Circumstances exist on the site?
Yes
No
Community ID:
Is the site significantly disturbed (Atypical Situation)?
Yes
No
Transect ID:
Is the area a potential Problem Area?
(if needed explain on reverse.)
Yes
No
Plot ID:
upland
2
VEGETATION
Dominant Plant Species
Stratum
Indicator
Sub-dominant Plant Species
1. Phalaris aquatica
HERB
FAC+
1.
2. Avena barbata
HERB
NL
2.
3.
3.
4.
4.
5.
5.
6.
6.
7.
7.
8.
8.
Percent of Dominant Species that are OBL, FACW and/or FAC:
(excluding FAC-)
Stratum
Indicator
50%
Remarks : Wetland vegetation not greater than 50%, does not meet vegetation requirement
HYDROLOGY
Wetland Hydrology Indicators :
Primary Indicators :
Recorded Data
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X
Inundated
Saturated in Upper 12 Inches
Water Marks
Drift Lines
Sediment Deposits
Drainage patterns In Wetlands
No Recorded Data Available
Field Observations :
Depth of Surface Water :
none
(in.)
Depth to Free Water in Pit : >16
(in.)
>16
(in.)
Depth To Saturated Soil :
Secondary Indicators (2 or more required) :
Oxidized Root Channels In Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC-Neutral test
Other (Explain In Remarks)
Hydrology Remarks : No indicators present; does not meet hydrology requirement
2
Plot ID:
SOILS
Map Unit Name
(Series and Phase) :
Spreckels loam, 15-30 % slopes
Drainage Class:
Field Observations
Confirm Mapped Type?
Taxonomy (Subgroup) : Ultic Palexeralfs
well drained
Yes
No
Profile Description:
Depth
(Inches)
0-12
Horizon
Matrix Color
(Munsell Moist)
A/B
10YR 3/2
Hydric Soil Indicators :
Histosol
Histic Epipedon
Sulfidic Odor
Aquic Moisture Regime
Reducing Conditions
Gleyed or Low-Chroma Colors
Mottle Colors
(Munsell Moist)
Mottle
Abundance / Contrast
none
Texture, Concretions,
Structure, etc.
clay loam
Concretions
High Organic Content In Surface Layer In Sandy Soils
Organic Streaking In Sandy Soils
Listed On Local Hydric Soils List
Listed On National Hydric Soils List
Other (Explain In Remarks)
Profile Remarks:
No mottles present with chroma of 2; does not meet hydric soil requirement.
WETLAND DETERMINATION
Hydrophytic Vegetation Present?
Yes
No
Wetland Hydrology Present?
Yes
No
Hydric Soil Present ?
Yes
No
Is this Sampling Point Within a Wetland?
Yes
No
Remarks : Sample point taken because presence of Phalaris aquatica suggested potential wetland, but this area does
not meet any of the three criteria for a wetland.
Approved By HQUSACE 3/92
APPENDIX B - POTENTIAL JURISDICTIONAL AREAS MAP
Fountaingrove (9.85 acres)
Sample Points
Culvert
Non-jurisdictional Roadside Ditch (711 linear feet)
Fountaingrove
Lake
2169-G East Francisco Blvd.
San Rafael, CA 94901
(415) 454-8868 Phone
(415) 454-0129 Fax
Potential Section 404 "Other Waters" (131 linear feet)
Off-Site "Other Waters"
Fountaingrove
Lodge
Santa Rosa, CA
Fou
ro ve
g
n
i
nta
131 Linear feet
.012 Acres
urse
o
C
G olf
SP1
Appendix B.
Map of Potential
Section 404 Jurisdiction
Within Fountaingrove
Lodge
SP2
SP3
Fountaingrove
Lodge
SP4
o
Th
ma
s
k
La
eH
i
a rr
r
sD
ive
City Park Site
357.28 Linear feet
.008 Acres
153.28 Linear feet
.017 Acres
200.52 Linear feet
.009 Acres
1 inch equals 200 feet
0
100
200
Feet
Date: May 2007
Map By: Michael Rochelle
File: l:\Acad 2000\15000\15150\GIS\
ArcMap\WetlandDelinNewBase.mxd
400
APPENDIX C LIST OF PLANT SPECIES OBSERVED IN THE STUDY AREA
Appendix C. List of plant species observed on Fountaingrove Lodge Site during wetland delineation conducted on June
16, 2006 and supplemental site visit on April 9, 2007.
Scientific Name
Common Name
Achillea millefolium
yarrow
Adiantum jordanii
maidenhair fern
Aesculus californicus
buckeye
Agoseris grandiflora
dandelion
Anagallis arvensis
scarlet pimpernel
Arbutus menziesii
Pacific madrone
Athyrium filix-femina
lady fern
Avena barbata
slender wild oat
Baccharis pilularis
coyote brush
Brachypodium distachyon
false brome
Briza maxima
rattlesnake grass
Briza minor
little quaking grass
Brodiaea elegans
harvest brodiaea
Bromus diandrus
ripgut brome
Bromus hordeaceus
soft chess
Capsella bursa-pastoris
shepherd’s purse
Cardamine californica
milk maids
Carduus pycnocephalus
Italian thistle
Centaurea solstitialis
yellow-star thistle
Centaurium sp.
centaury
Chlorogalum angustifolium
narrow leaved soap plant
Cirsium vulgare
bull thistle
Convolvulus arvensis
bindweed
Conyza bonariensis
horseweed
Coreopsis sp.
tickseed
Cortaderia jubata
jubata grass
Cynoglossum grande
western houndstongue
Cynosurus echinatus
hedgehog dogtail
Cyperus eragrostis
tall flatsedge
Cytisus monspessulanus
french broom
Scientific Name
Common Name
Daucus pusillus
American wild carrot
Danthonia californica
California oatgrass
Dodecatheon hendersonii
shooting star
Echinochloa crus-galli
barnyard grass
Elymus elymoides
squirreltail
Elymus glaucus
blue wildrye
Eremocarpus setigerus
turkey mullein
Erodium botrys
filaree
Festuca californica
California fescue
Filago gallica
narrowleaf cottonrose
Foeniculum vulgare
fennel
Fraxinus latifolia
Oregon ash
Galium californicum
California bedstraw
Genista monspessulana
French broom
Geranium molle
crane’s bill geranium
Hemizonia pungens
common tarweed
Holcus lanatus
velvet grass
Hordeum brachyantherum
meadow barley
Hordeum murinum
foxtail barley
Hypochaeris radicata
rough cat’s ear
Juncus bufonius
toad rush
Juncus patens
spreading rush
Juncus xiphioides
iris-leaved rush
Lactuca serriola
prickly lettuce
Lathyrus vestitus
wild pea
Lolium multiflorum
Italian ryegrass
Lotus corniculatus
bird’s foot trefoil
Lotus humistratus
hill lotus
Madia gracilis
slender tarweed
Marah oreganus
coast man-root
Melica imperfecta
melica
Mentha pulegium
pennyroyal
Scientific Name
Common Name
Mimulus aurantiacus
sticky monkeyflower
Nassella pulchra
purple needlegrass
Olea europaea
olive
Paspalum dilatatum
dallis grass
Pentagramma triangularis
gold-back fern
Perideridia kelloggii
yampah
Phalaris aquatica
Harding grass
Phalaris californica
California canarygrass
Picris echioides
bristly ox-tongue
Plantago lanceolata
English plantain
Polygonum sp.
smartweed
Polypogon monspeliensis
rabbitsfoot grass
Pseudotsuga menziesii
Douglas fir
Quercus lobata
valley oak
Quercus agrifolia
coast live oak
Quercus kelloggii
black oak
Quercus douglasii
blue oak
Ranunculus californicus
common buttercup
Raphanus sativa
wild radish
Rubus discolor
Himalayan blackberry
Rumex acetosella
sheep sorrel
Rumex pulcher
fiddle dock
Salix laevigata
red willow
Sanicula crassicaulis
Pacific sanicle
Scirpus microcarpus
panicled bulrush
Sidalcea malvaeflora
checkerbloom
Sisyrinchium bellum
blue eyed-grass
Stachys ajugoides var. rigida
wetland bugle-hedgenettle
Stachys albens
cobwebby hedgenettle
Symphoricarpos sp.
snowberry
Taeniatherum caput-medusae
medusahead
Toxicodendron diversilobum
poison oak
Scientific Name
Common Name
Trifolium fragiferum
strawberry clover
Trifolium hirtum
rose clover
Triteleia laxa
Ithuriel’s spear
Typha sp.
cattail
Umbellularia californica
bay laurel
Vitis californica
California wild grape
Vulpia bromoides
foxtail fescue
Wyethia sp.
mule’s ears
APPENDIX D - STUDY AREA PHOTOGRAPHS
Above: Unnamed creek in southern portion of Study
Area.
Below: Potential non-jurisdictional man-made
stormwater ditch dug in uplands.