HomeMy WebLinkAbout; Agua Hedionda Sewer Project Wetland Delin.; Agua Hedionda Sewer Project Wetland Delin.; 1999-04-27p
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m WETLAND DELINEATION
FOR
AGUA HEDIONDA SEWER PROJECT
CITY OF CARLSBAD
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Prepared for
CARLSBAD MUNICIPAL WATER DISTRICT
5950 EL CAMINO REAL
CARLSBAD, CA 92008
Prepared by
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4241 Jutland Drive, Suite 201
San Diego, CA 92117-3653
619/270-5066 fax 270-5414
GERALD A. SCHEID
SENIOR BIOLOGIST
RECON NUMBER 3055B
APRIL 27,1999
This document printed on recycled paper
TABLE OF CONTENTS
_ Introduction 1^^
Methods 1
A. Hydrophytic Vegetation Characterization 1m
B. Hydric Soils Characterization 4
(P
|| C. Wetland Hydrology Characterization 4
fft D. Estimation of Other Jurisdictional Waters 4
M
Results of Field Data 5PI
^ A. Vegetation 5
„. B. Soils 6
*• C. Hydrology 7
Wetland Delineation 7it*
A. Areas Considered Wetlands 8r*
*• B. Other Jurisdictional Waters 8
" References Cited 10
!••
"" FIGURES••
1: Project location in county of San Diego 2
f* 2: Project location on U.S.G.S. topographic map 3
ta 3: Location of Jurisdictional waters and adjacent wetlands 9
*• ATTACHMENT
1: Field data forms
^^^
M
Introduction
** A wetland delineation and estimate of other jurisdictional waters of the U.S. was
jp, conducted within the project area for the Agua Hedionda sewer alignments and
^ alternative pump station locations on September 28, 1998. The purpose of this survey
was to identify and map the location of any jurisdictional waters of the U.S. including
p adjacent wetlands within the bounds of the project area. The U.S. Army Corps of
m Engineers (USAGE) will use this report to make a final jurisdictional determination with
respect to Section 404 of the Clean Water Act.m
•* The Agua Hedionda sewer improvement project area is located in the city of Carlsbad
(Figure 1). The project area lies between El Camino Real and Interstate 5 along the south
iL side of Agua Hedionda Creek and lagoon (Figure 2).
£ Methods
f The methodology for delineating wetlands used for this report followed guidelines set
M forth by the USAGE (1987). Three criteria must be fulfilled in order to consider an area a
jurisdictional wetland: (1) the presence of hydrophytic vegetation; (2) the presence of
** hydric soils; and (3) the presence of wetland hydrology. Atypical wetland areas
*" (disturbed wetlands) and problem area wetlands (e.g., seasonal wetlands) may lack one or
_ more of the three criteria. However, areas such as these could still be consideredt^t
wetlands if background information on the previous condition of the area and field
observations indicate that the missing wetland criteria were present before the disturbance
««» and would occur at the site under normal circumstances.
n»
A routine on-site determination method (USAGE 1987) was used to gather field data at
** potential wetland areas on the project site. Observations of vegetation in the field were
*» used to locate vegetation units to be evaluated as potential wetlands. The delineation
focused on those areas supporting plant communities dominated by hydrophytic
^ vegetation, areas identified in the field as locations with the potential to support
hydrophytic vegetation, and locations adjacent to these two types of areas. In addition,
p areas that displayed a prominent ordinary high water mark were also evaluated as
H potential non-wetland jurisdictional waters or disturbed wetland.
W A. Hydrophytic Vegetation Characterization
m The potential wetland areas were surveyed by walking the proposed pipeline alignments
j§ and pump station locations within the project area and making observations of those areas
exhibiting characteristics of jurisdictional waters or wetlands. Vegetation units with the
* potential to be wetlands were examined, the dominant plant species for each vegetation
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PROJECT LOCATION
2.2 MILES 0
FIGURE 1
Regional Location of the Project
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PROJECT LOCATION
Map Source: U.S.GS 7.5 minute topographic maps,
San Luis Rey and Encinitas quadrangles
4000 2000 FEET 0
0
FIGURE 2
Project Location
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1
stratum (i.e., tree, shrub, herb, and vine) within the unit was determined, and the relative
canopy cover of the species present was visually estimated. The dominant species from
each stratum were then recorded on a summary data sheet along with the associated
wetland indicator status of those species. The wetland indicator status of each dominant
p species was determined by using the California subregional list of wetland plants
II provided by the U.S. Fish and Wildlife Service (1997).
| B. Hydric Soils Characterization
P Sample points were selected within a particular vegetation unit where the apparent
• boundary between wetland and upland was inferred based on changes in the composition
of the vegetation. Soil pits were dug to a depth of at least 18 inches, as necessary, to
; determine soil color, evidence of soil saturation, depth to groundwater, and indicators of a
reducing soil environment (e.g., mottling, gleying, sulfidic odor). Soil profiles exposed
p by these pits were compared to known profiles for soil types occurring in the region by
|g referencing the local soil survey (U.S. Department of Agriculture [USDA] 1973). The
order, group, and series for the soils present on the site were recorded. The local hydric
*"" soils list, obtained from the Soil Conservation Service, was checked to determine if any
*• of the sampled soil types are considered hydric with respect to the conditions stated on
the list.
C. Wetland Hydrology Characterization
** Hydrologic information for the sites was obtained by locating "blue-line" streams on U.S.
Geological Survey (USGS) topographic maps, reviewing groundwater table elevation
information from soil surveys, and direct observations of hydrology indicators in the field
(e.g., inundation, drift lines, sediment deposits, drainage patterns). Evidence of flows,
p. flooding, and ponding were recorded and the frequency and duration of these events were
to inferred.
j" D. Estimation of Other Jurisdictional Waters
p Drainages, or portions thereof, that lack hydrophytic vegetation and/or hydric soils, but
JH have distinct evidence of seasonal flows were considered unvegetated non-wetland
Jurisdictional waters. The extent of the observed ordinary high water mark, as defined by
It the USAGE under Section 404 of the Clean Water Act, was used to estimate the limits of
• these other Jurisdictional waters.
m
m
m
m Results of Field Data
P
It A description of the major vegetation units observed, soil types encountered, and a
discussion of the local hydrology in the project area is presented below. Copies of the
P field data forms summarizing information on vegetation, soils, and hydrology observed at
* each sample site are provided in Attachment 1.
m A. Vegetation
B Areas with hydrophytic vegetation were observed within the project site. Areas having
hydrophytic vegetation, in general, were considered potential wetland sites. Areas
__ without hydrophytic vegetation were considered upland, unless evidence suggested that a
tt wetland or other jurisdictional water might occur at the particular location (i.e., an
atypical situation was present).
p
M Locations within the project area where hydrophytic vegetation occurs is primarily
associated with the salt marsh above Agua Hedionda Lagoon. Small areas of freshwater
*" marsh and mule fat scrub occur along the margins of the salt marsh where drainage
^ channels enter the marsh. The types of hydrophytic vegetation observed in each of these
locations is described briefly below.
to Coastal Salt Marsh
p»The salt marsh within the project area is dominated by the obligate wetland species
*" pickleweed (Salicornia virginicd). Other wetland species present include alkali heath
,M (Frankenia salind), alkali weed (Cressa truxillensis), and prairie bulrush (Scirpus
^ robustus).
«•* Freshwater Marsh
These areas are dominated by cattail (Typha latifolia), an obligate wetland species. Other
P» plant species associated with freshwater marsh in the project area include salt grass
to (Distichlis spicatd), annual beard grass (Polypogon monspeliensis), curly dock (Rumex
crispus), and prairie bulrush.m
* Mule Fat Scrub
P The mule fat shrub (Baccharis salicifolid) is the dominant wetland plant in this
H vegetation type. Other plants occurring in mule fat scrub in the project area include
arroyo willow (Salix lasiolepis), annual beard grass, and coast goldenbush (Isocoma
fl menziesii).a
mm
111 Upland Vegetation
P Some drainage courses within the study area occur in disturbed, cultivated, or brush-
* covered areas dominated by mostly upland species. A portion of these drainages have
well-defined banks indicating strong seasonal flows. However, the steep gradient and
2 shallow soils of these drainage courses lead to rapid runoff such that hydric conditions do
not persist for long enough durations to support hydrophytic vegetation. These areas
E display an ordinary high water mark and therefore were considered non-wetland
jurisdictional waters.
1 B. Soils
P Information on the soil types sampled in the study area was summarized from the
H following sources: Soil Survey for San Diego County (USDA 1973), Soil Taxonomy
(USDA 1975), and the local hydric soil list obtained from the Soil Conservation Service.
P
m 1. Mollisol Soil Order (Salinas Clay Loam)
* The Salinas clay loam sampled in the field is characterized as a Calcic Pachic
I* Haploxeroll. This soil type is very dark in color (10YR 3/2), has a very thick surface
layer, and has a Calcic horizon or free carbonates (secondary lime) at a shallow depth.
They are often found in level or gently sloping areas with shallow groundwater. Salinas
soils are well-drained to moderately well-drained clays derived from sediments washed
mm. from Diablo, Linne, Las Flores, Huerhuero, and Olivenhain soils.
tM
Salinas clay loam soil is not considered a hydric soil by the National Resource
** Conservation Service (NRCS). However, situations occur where hydric conditions
*» develop in areas of Salinas clay loam soil (e.g., low-lying areas, drainages, and
depressions). Hydric soil indicators observed on Salinas clay loam soil in the project area
included a matrix with low chroma color and mottles, saturation, and sulfidic odor.
f* 2. Alfisol Soil Order (Las Flores Loamy Fine Sand)
Las Flores loamy fine sand soils are moderately well-drained loamy fine sands that have a
m clay subsoil. These soils are derived from siliceous marine sandstone. Permeability is
H very slow and runoff medium. A perched groundwater table may result above the natric
horizon (area of clay and salt accumulation) in some years due to the low hydraulic
* conductivity (slow downward movement of water) of this soil.
m
Las Posas loamy fine sand is not considered a hydric soil by the NRCS. However,
W situations occur where hydric conditions develop in areas of Las Posas loamy fine sand
* soil (e.g., low lying areas, drainages, and depressions). Hydric soil indicators observed
** on Las Posas loamy fine sand soil in the project area included a matrix with low chroma
_ color and mottles, and saturation.
m
3. Tidal Flat
•^ The upper portion of Agua Hedionda lagoon is a low, flat area that is subject to periodic
tidal influence. The soils in this area are characterized as upper tidal flats. Soil here is
H composed of a mixture that ranges from clay to very fine sand. Typically, there is an
* excess of salts in the soil; thus, only salt-tolerant plant species are able to persist. In areas
where the salt concentrations are too great for plant life, barren salt pannes occur.
*
* Tidal flats are considered hydric soils by the NRCS. Therefore, these soils were not
sampled in the project area.
|
C. Hydrology
** The study area is in the coastal plains physiographic province of San Diego County,
p, where the climate is temperate, with mild, usually frost-free winters and dry, warm
ta summers. Annual rainfall average about 254 millimeters (10 inches) near the coast, with
90 percent recorded between November and April.
•• Runoff generated in the study area generally flows east to west, with some tributary
drainage from the north and south. Runoff is presently conveyed mostly in natural
** drainages with some overland flow. Agua Hedionda Creek drains into the site from the
*" east. Ocean water from the west inundates the upper tidal flats during high tides. This
salt water input in conjunction with high evaporation rates on the upper flats maintains
the soil salinity at high levels.
m Small tributary drainages enter the upper tidal flats from the adjacent upland areas. In
ID addition, local groundwater seeps into the lagoon from slopes adjacent to the tidal flats.
Patches of freshwater marsh are supported at the margins of the tidal flat by this
* freshwater.
p Wetland Delineation
Those locations in the study area that meet the three criteria for wetland designation are
C described in detail below. Areas considered non-wetland, but jurisdictional waters, are
also discussed. Wetland areas were delineated if the location supported hydrophytic
m vegetation, hydric soils, and wetland hydrology based on the following guidelines:
i
• Hydrophytic Vegetation: The hydrophytic vegetation criterion is considered
<• fulfilled at a location if greater than 50 percent of all the dominant species present
within the vegetation unit had a wetland indicator status of obligate (OBL),
m facultative-wet (FACW), or facultative (FAC) (USAGE 1987). An OBL indicator
|g status refers to plants that have a 99 percent probability of occurring in wetlands
under natural conditions. A FACW indicator status refers to plants that usually occur
• in wetlands (67-99 percent probability) but are occasionally found in non-wetlands.
H A FAC indicator status refers to plants that are equally likely to occur in wetlands or
non-wetlands (estimated probability 34-66 percent).
I
" • Hydric Soils: The hydric soil criterion is considered fulfilled at a location if soils in
the area could be inferred to have a high groundwater table, evidence of prolonged
B soil saturation, or any indicators suggesting a long-term reducing environment in the
upper 457 millimeters (18 inches) of the soil profile.
P
H • Wetland Hydrology: The wetland hydrology criterion is considered fulfilled at a
location based upon the conclusions inferred from the field observations that indicate
C an area has a high probability of being inundated or saturated (flooded or ponded)
" long enough during the growing season to develop anaerobic conditions in the surface
soil environment, especially the root zone (USAGE 1987).
A. Areas Considered Wetlands
** Based on information on soils, hydrology, and vegetation, observations made in the field,
^ and data analysis, the locations of the jurisdictional wetlands in the study area were
delineated. The location of the wetland areas are shown on Figure 3. The wetland
boundary lines are based on the observed extent of all three wetland criteria (hydrophytic
P» vegetation, hydric soils, wetland hydrology) within vegetation units. The extent of these
he criteria correlated well with changes in vegetation, topography, distribution of observed
hydric soils, and lateral extent of observed or inferred water movement (flooding or
** ponding limits).
m
p» B. Other Jurisdictional Waters
The location of areas considered jurisdictional waters, but not wetlands, is based on the
observation of strong indicators of seasonal flows or ponding and the presence of an
*• ordinary high water mark. These jurisdictional waters were delineated by the lateral and
upstream/downstream extent of the ordinary high water mark of the particular drainage or
^ depression.
Ip Areas exist in drainages within the study area where the vegetation is dominated by
Hi upland species, and/or the soils lack hydric characteristics, but strong indicators of
seasonal flows are present (e.g., well-defined, deeply cut banks). The majority of these
* drainages are minor tributaries that drain toward the lagoon from agricultural fields.m
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Drainages that possess a distinct ordinary high water mark are, therefore, considered
jurisdiction^ waters by definition. The non-wetland jurisdictional waters in the study
area are shown on Figure 3.
References Cited
U.S. Army Corps of Engineers
1987 Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1,
Department of the Army. January.
U.S. Department of Agriculture
1973 Soil Survey, San Diego Area, California. Edited by Roy H. Bowman. Soil
Conservation Service and Forest Service.
1975 Soil Taxonomy: A Basic System of Soil Classification for Making and
Interpreting Soil Surveys. Agriculture Handbook No. 436.
U.S. Fish and Wildlife Service
1997 National List of Vascular Plant Species that Occur in Wetlands: 1996 National
Summary. Ecology Section - National Wetlands Inventory. March 3,1997.
10
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ATTACHMENT 1
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DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? 13 Yes Q No
Is the site significantly disturbed (Atypical Situation)? D Yes El No
Is the area a potential Problem Area? D Yes H No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Goldenbush
scrub
Transect ID:
Plot ID: 1
VEGETATION
Dominant Plant Species
1 . Isocoma menaesii
2. Polypogon monspeliensis
3.
4.
5.
6.
7.
8.
Stratum
Shrub
Herb
Indicator
FAC
FACW
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (so%)
Remarks:
1 . Assume presence of wetland vegetation? £3 Yes Q No
2. Rooted emergent vegetation present? CD Yes E3 No
HYDROLOGY
Q Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 18 (in.)
Greater than 18 (in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
D Saturated in: Q Upper 12" D 13-18"
D Water Marks
D Drift Lines
D Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
D Oxidized Root Channels in: Q Upper 12"
D 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks: No wetland hydrology indicators observed at this location.
1. Filamentous or sheet forming algae present? D Yes El No
2. Slope: \30-2%; or g| >2%
3. Oxidized rhizospheres: D new roots only; Q old roots only; O new and old roots, E3 none
4. Flooding: £\ none, flooding not probable; H rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or Q frequent, occurs on an average of more than once in
2 years.
5. Duration: E9 very brief, if <2 days; D brief, if 2-7 days, or Q long, if >7 days
6. Site ponds water? Q Yes H No
SOILS
Map Unit Name
(Series and Phase): Salinas day loam
Taxonomy (Subgroup): Calcic Haplic Haploxeroll
Drainage Class: WD - MWD*
Permeability: Moderately slow «_,
Runoff: Very slow T
Field Observations: II
Confirm Mapped Type? H Yes D No m
Profile Description: |
Depth
(inches)
0-18
Horizon
Matrix Color
(Munsell Moist)
10YR3/2
Mottle Colors
(Munsell Moist)
Mottle Abundance/
Contrast
Texture, Concretions,
Structures, etc. V
Inclay loam w
[i»
«kIt
Hydric Soil Indicators:
D Histosol
n Histic Epipedon
D SulfidicOdor
D Aquic Moisture Regime
D Reducing Conditions
n Gleyed or Low-Chroma Colors
D Concretions
O High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
O Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
D Other (Explain in Remarks)
OberservatJons and Remarks: No hydric soil indicators observed at this location.
7. Smell: n Neutral; O Slightly fresh; or & Freshly plowed field smell
2. Site: O Irrigated; O Land leveled; O Ditch drained; O Pumped; Q Graded to drain via slope
3. Soils: D d° E3 do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophytic Vegetation Present? H Yes D No
Wetland Hydrology Present? Q Yes H No
Hydric Soils Present? Q Yes El No
Is this Sampling Point within a Wetland? O Yes No
Remarks:
1. Possibly water of the U.S.? O Yes B Wo
2. Possibly exempt from Corps/EPA Regulation? D Yes R No (If yes, check item(s) below.)
(a) Q Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
Approved by HQUSACE 3/92 M
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes El No
Is the area a potential Problem Area? D Yes H No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Willow scrub
Transect ID:
Plot ID: 2
VEGETATION
Dominant Plant Species
1 . hocoma menaesii
2. Polypogon monspeliensis
3. Salix lasiolepis
4. Baccharis salicifolia
5. Distichlis spicata
6. Leymus triticoides
7.
8.
Stratum
Shrub
Herb
Tree
Shrub
Herb
Herb
Indicator
FAC
FACW
FACW
FACW
FACW
FAC
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (66%)
Remarks:
1 . Assume presence of wetland vegetation? £3 Yes Q No
2. Rooted emergent vegetation present? d Yes E3 No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 18 (in.)
Greater than 18 (in.)
Wetland Hydrology Indicators:
Primary Indicators:
n Inundated
D Saturated in: Q Upper 12" D 13-18"
G Water Marks
D Drift Lines
El Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
D Oxidized Root Channels in: D Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks:
1. Filamentous or sheet forming algae present? d Yes El No
2. Slope: El 0-2%; or D >2%
3. Oxidized rhizospheres: D new roots only; D old roots only; El new and old roots, D none
4. Flooding: D none, flooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: Q very brief, if <2 days; \3 brief, if 2-7 days, or El long, if >7 days
6. Site ponds water? \3Yes &No
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Haplic Haploxeroll
Profile Description:
Depth
(inches)
0-12
12-18
Horizon
Hydric Soil Indicators:
D Histosol
D Histic Epipedon
D SulfidicOdor
D Aquic Moisture Regime
El Reducing Conditions
Drainage Class:
Permeability:
WD-MWD* *
Moderately slow M
Runoff: Very slow Y
Field Observations: 1
Confirm Mapped Type? El Yes Q No *
Matrix Color
(Munsell Moist)
10YR5/2
10YR3/1
Mottle Colors
(Munsell Moist)
5YR6/8
5YR6/8
D Concretions
r
Mottle Abundance/
Contrast
small, common
small, common
Texture, Concretions,
Structures, etc.
sandy loam
clay loam
n High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
El Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
OberservatJons and Remarks:
1. Smell: Q Neutral; El Slightly fresh; or Q Freshly plowed field smell
2. Site: D Irrigated; Q Land leveled; D Ditch drained; D Pumped; D Graded to drain via slope
3. Soils: El do Q do not become frequently ponded or saturated for long (>7days) to very long durations
(>30 days) during the growing season
•
I
m
*
•
•
•
HI
Mk
""
H
WETLAND DETERMINATION
Hydrophytic Vegetation Present? El Yes D No
Wetland Hydrology Present? E) Yes D No
Hydric Soils Present? El Yes D No
Is this Sampling Point within a Wetland? El Yes D No
Remarks:
1. Possibly water of the U.S.? El Yes D No
2. Possibly exempt from Corps/EPA Regulation? D Yes El No (If yes, check item(s) below.)
(a) O Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifical/y irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 32B.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes H No
Is the area a potential Problem Area? D Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28,
County: San Diego
State: CA
Community ID:
Marsh
Transect ID:
Plot ID: 3
1988
Freshwater
VEGETATION
Dominant Plant Species
1 . Typha latifolia
2. Isocoma menricsii
3. Scirpus robustus
4. Saliconna virginica
5. Distichlis spicata
6.
7.
8.
Stratum
Herb
Shrub
Herb
Herb
Herb
Indicator
OBL
FAC
OBL
OBL
FACW
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (80%)
Remarks:
1 . Assume presence of wetland vegetation? £3 Yes Q No
2. Rooted emergent vegetation present? E3 Yes Q No
HYDROLOGY
D Recorded Data (Describe in Remarks):
n Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water: 6_ (in.)
Depth to Water in Pit: Q (in.)
Depth to Saturated Soil: 0. (in.)
Wetland Hydrology Indicators:
Primary Indicators:
El Inundated
El Saturated in: El Upper 12" El 13-18"
El Water Marks
D Drift Lines
D Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
D Oxidized Root Channels in: D Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks:
1. Filamentous or sheet forming algae present? D Yes El No
2. Slope: El 0-2%; or O>2%
3. Oxidized rhizospheres: \3newrootsonly; O old roots only; Q new and old roots,
4. Flooding: D none, flooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: D very brief, if <2 days; ^ brief, if 2-7 days, or El long, if >7days
6. Site ponds water? &Yes D Ato
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Haplic Haploxeroll
JL
Drainage Class: WD - MWD* mr
Permeability: Moderately slow „
Runoff: Very slow |
Field Observations: J
Confirm Mapped Type? H Yes Q No *
Profile Description: D
Depth
(inches)
0-18
Horizon
Matrix Color
(Munsell Moist)
10YR3/2
Mottle Colors
(Munsell Moist)
10YR2/1
Mottle Abundance/
Contrast
common
Texture, Concretions,
Structures, etc. *P
clay loam ifc
m
L
MM,
Hydric Soil Indicators:
D Histosol
D Histic Epipedon
13 SulfidicOdor
O Aquic Moisture Regime
EJ Reducing Conditions
El Gleyed or Low-Chroma Colors
D Concretions
D High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
D Other (Explain in Remarks)
Oberservations and Remarks:
1. Smell: O Neutral; IS Slightly fresh; or D Freshly plowed field smell
2. Site: D Irrigated; Q Land leveled; D Ditch drained; Q Pumped; C3 Graded to drain via slope
3. Soils: El do D do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophytic Vegetation Present? j
Wetland Hydrology Present?
Hydric Soils Present?
3 Yes
3 Yes
3 Yes
D No
D Non NO
Is this Sampling Point within a Wetland? El Yes Q No ^
M»
II
Remarks:
1. Possibly water of the U.S.? El Yes D No
2. Possibly exempt from Corps/EPA Regulation? D Yes ^ No (If yes, check item(s) below.)
(a) Q Non-tidal drainage and irrigation ditches excavated on dry land
(b) Q Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, setting basins, or rice growing.
(d) LI Arttfical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? [3 Yes Q No
Is the site significantly disturbed (Atypical Situation)? D Yes IS No
Is the area a potential Problem Area? D Yes IS No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Freshwater
Marsh
Transect ID:
Plot ID: 4
VEGETATION
Dominant Plant Species
1 . Polypogon monspeliensis
2. Isocoma menziesii
3. Scirpus robustus
4. Rumex crispus
5. Distichlis spicata
6.
7.
8.
Stratum
Herb
Shrub
Herb
Heib
Herb
Indicator
FACW
FAC
OBL
FACW
FACW
Dominant Plant Species
S.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (80%)
Remarks:
1 . Assume presence of wetland vegetation? E3 Yes O No
2. Rooted emergent vegetation present? Q Yes E3 No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
IS No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 18 (in.)
Greater than 18 (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
IS Saturated in: Q Upper 12" R 13-18"
D Water Marks
D Drift Lines
IS Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
IS Oxidized Root Channels in: IS Upper 12"
IS 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks:
1. Filamentous or sheet forming algae present? D Ves IS No
2. Slope: \30-2%; or $&>2%
3. Oxidized rhizospheres: D new roots only; D old roots only; |3 new and old roots, D none
4. Flooding: Q none, Hooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or IS frequent, occurs on an average of more than once in
2 years.
5. Duration: Q very brief, if <2 days; D brief, if 2-7 days, or IS long, if >7 days
6. Site ponds water? El Yes Q No Small seep from hillside keeps this area wet yeairound (?)
SOILS
Map Unit Name
(Series and Phase): Las Floies loamy fine sand
Taxonomy (Subgroup): Haplic Natrixcralf
Drainage Class: MWD* <•
Permeability: Very slow m
Runoff: Medium |
Field Observations: 1
Confirm Mapped Type? H Yes D No *
Profile Description: 1
Depth
(inches)
0-12
12-18
Horizon
Matrix Color
(Munsell Moist)
10YR5/2
10YR3/2
Mottle Colors
(Munsell Moist)
5YR6/8
5YR6/8
Mottle Abundance/
Contrast
small
small
inTexture, Concretions,
Structures, etc. &
sandy loam III
clay loam |^
L
L_ {MEHydric Soil Indicators:
D Histosol
Q Histic Epipedon
D SulfidicOdor
Q Aquic Moisture Regime
El Reducing Conditions
El Gleyed or Low-Chroma Colors
C] Concretions
Q High Organic Content in Surface Layer in Sandy Soils
Q Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
n Listed on National Hydric Soils List
D Other (Explain in Remarks)
Oberservations and Remarks:
1. Smell: Q Neutral; El Slightly fresh; or Q Freshly plowed field smell
2. Site: Q Irrigated; D Land leveled; Q Ditch drained; D Pumped; Q Graded to drain via slope
3. Soils: 13 do Q do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophytic Vegetation Present? El Yes Q No
Wetland Hydrology Present? EJ Yes Q No
Hydric Soils Present? El Yes Q No
Is this Sampling Point within a Wetland? El Yes D No
Remarks:
1. Possibly water of the U.S.? IS Yes Q No
2. Possibly exempt from Corps/EPA Regulation? Q Yes El No (If yes, check itemfs) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, setting basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 32B.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? El Yes Q No
Is the site significantly disturbed (Atypical Situation)? D Yes H No
Is the area a potential Problem Area? Q Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Upland -
Disturbed
Transect ID:
Plot ID: 5
VEGETATION
Dominant Plant Species
1 . Hemizonia fasciculate
2. Isocoma menaesii
3. Vulpia octiflora
4. Rumex crispus
5. Juncus xiphioides
6. Juncus bufonius
7.
8.
Stratum
Herb
Shrub
Herb
Herb
Herb
Herb
Indicator
UPL
FAC
UPL
FACW
OBL
FACW
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 66% (so%)
Remarks:
1 . Assume presence of wetland vegetation? E3 Yes Q No
2. Rooted emergent vegetation present? Q Yes Q No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
Q Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 18 (in.)
Greater than 18 (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
D Saturated in: D Upper 12" D 13-18"
D Water Marks
D Drift Lines
D Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
D Oxidized Root Channels in: D Upper 12"
D 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks: No wetland hydrology indicators observed at this site.
1. Filamentous or sheet forming algae present? D Yes IS No
2. Slope: H 0-2%; or D >2%
3. Oxidized rhizospheres: D new roots only; Q old roots only; D new and old roots, El none
4. Flooding: Q none, flooding not probable; El rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or D frequent, occurs on an average of more than once in
2 years.
5. Duration: E) very briel', H <2 days; D brief, it 2-7 days, or O long, if >7 days
6. Site ponds water? Q Yes El No
SOILS
Map Unit Name
(Series and Phase): Las Floras loamy fine sand
Taxonomy (Subgroup): Haplic Natrixeralf
Drainage Class: MWD* '
Permeability: Very slow ^
Runoff: Medium j
Field Observations: J
Confirm Mapped Type? H Yes D No P
Profile Description:
Depth
(inches)
0-18
Horizon
Matrix Color
(Munsell Moist)
10YR5/2
Mottle Colors
(Munsell Moist)
Mottle Abundance/
Contrast
Texture, Concretions,
Structures, etc.
sandy loam
1
1
«
Hydric Soil Indicators:
D Histosol
D Histic Epipedon
D SulfidicOdor
D Aquic Moisture Regime
n Reducing Conditions
D Gleyed or Low-Chroma Colors
D Concretions
n High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
D Other (Explain in Remarks)
Oberservations and Remarks: No hydric soil conditions observed
1. Smell: H Neutral; D Slightly fresh; or D Freshly plowed field smell
2. Site: D Irrigated; O Land leveled; D Ditch drained; Q Pumped; D Graded to drain via slope
3. Soils: n do H do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
I
E
I
t
WETLAND DETERMINATION
Hydrophytic Vegetation Present? H Yes
Wetland Hydrology Present? D Yes
Hydric Soils Present? Q Yes
D No
H No
El No
Is this Sampling Point within a Wetland? D Yes
HP
3 No ip
Remarks:
1. Possibly water of the U.S.? Q Yes El No
2. Possibly exempt from Corps/EPA Regulation? D Yes El Wo (If yes, check item(s) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) Q Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) O Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artittcal reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes El No
Is the area a potential Problem Area? D Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community
Freshwater/Alkali marsh
Transect ID:
Plot ID: 6
ID:
VEGETATION
Dominant Plant Species
1 . Typha latifolia
2. Isocoma menziesii
3. Distichlis spicata
4. Salicomia virginica
5.
6.
7.
8.
Stratum
Herb
Shmb
Herb
Herb
Indicator
OBL
FAC
FACW
OBL
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (75%)
Remarks:
1 . Assume presence of wetland vegetation? E3 Yes Q No
2. Rooted emergent vegetation present? E3 Yes Q No
HYDROLOGY
D Recorded Data (Describe in Remarks):
Q Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA (in.)
Greater than 18 (in.)
Greater than 18 (in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
D Saturated in: D Upper 12" El 13-18"
D Water Marks
D Drift Lines
D Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
El Oxidized Root Channels in: El Upper 12"
El 13-18"
Q Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks:
1. Filamentous or sheet forming algae present? OYes El No
2. Slope: El 0-2%; or Q >2%
3. Oxidized rhizospheres: D new roots only; D old roots only; El new and old roots, D none
4. Flooding: D none, Hooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: Q very brief, if <2 days; D brief, if 2-7 days, or El long, if >7 days
6. Site ponds water? El Yes D No Local ponding in depressions
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand
Taxonomy (Subgroup): Haplic Natrixcralf
Drainage Class: MWD* **
Permeability: Very slow ^
Runoff: Medium |
Field Observations: J
Confirm Mapped Type? H Yes D No **
Profile Description: |
Depth
(inches)
0-18
Horizon
Matrix Color
(Munsell Moist)
10YR5/2
Mottle Colors
(Munsell Moist)
5YR6/8
Mottle Abundance/
Contrast
small, common
PH
Texture, Concretions,
Structures, etc. IP
sandy loam •*
I
I*
m
Hydric Soil Indicators:
D Histosol
D Histic Epipedon
D SulfidicOdor
n Aquic Moisture Regime
13 Reducing Conditions
El Gleyed or Low-Chroma Colors
D Concretions
D High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
D Other (Explain in Remarks)
Oberservations and Remarks: Organic layer found at 12 inches below surface.
1. Smell: Q Neutral; & Slightly fresh; or Q Freshly plowed field smell
2. Site: O Irrigated; Q Landleveled; D Ditch drained; Q Pumped; D Graded to drain via slope
3. Soils: El do D do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophytic Vegetation Present? El Yes D No
Wetland Hydrology Present? El Yes D No
Hydric Soils Present? El Yes D No
Is this Sampling Point within a Wetland? El Yes D No
Remarks:
1. Possibly water of the U.S.? IS Yes D No
2. Possibly exempt from Corps/EPA Regulation? Q Yes El No (If yes, check itemfs) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
m
m DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes H No
Is the area a potential Problem Area? D Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Disturbed
Alkali Marsh
Transect ID:
Plot ID: 9
VEGETATION
Dominant Plant Species
1 . Brassica nigra
2. Ambrosia psilosiachya
3. Malvella leprosa
4.
5.
6.
7.
8.
Stratum
Herb
Herb
Herb
Indicator
UPL
FAC
FAC
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 66% (0%)
Remarks:
1 . Assume presence of wetland vegetation? |3 Yes Q No
2. Rooted emergent vegetation present? D Yes E3 No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 12 (in.)
6_ (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
D Saturated in: D Upper 12" Q 13-18"
D Water Marks
D Drift Lines
El Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
El Oxidized Root Channels in: Q Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks: This marsh area is isolated from the Aqua Hedionda marsh by Highland Valley Road
1. Filamentous or sheet forming algae present? D Yes El No
2. Slope: El 0-2%; or Q >2%
3. Oxidized rhizospheres: D new roots only; Q old roots only; El new and old roots, D none
4. Flooding: H none, flooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: D very brief, if <2 days; Q brief, if 2-7 days, or El long, if >7 days
6. Site ponds water? El Yes Q No Local ponding in depressions
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Pachic Haploxeroll
Profile Description:
Depth
(inches)
0-16
16-18
Horizon
Drainage Class: MWD* *
Permeability: Very slow _™
Runoff: Medium TT
Field Observations: I
Confirm Mapped Type? El Yes Q No W
Matrix Color
(Munsell Moist)
10YR5/2
10YR3/1
Mottle Colors
(Munsell Moist)
5YR6/8
5YR6/8
'
Mottle Abundance/
Contrast
faint at 12 inches
small
Texture, Concretions,
Structures, etc. (
sandy loam
clay loam
Hydric Soil Indicators:
D Histosol D Concretions
n Histic Epipedon Q High Organic Content in Surface Layer in Sandy Soils
n Sulfidic Odor Q Organic Streaking in Sandy Soils
D Aquic Moisture Regime D Listed on Local Hydric Soils List
El Reducing Conditions LI Listed on National Hydric Soils List
El Gleyed or Low-Chroma Colors D Other (Explain in Remarks)
Oberservations and Remarks:
1. Smell: Q Neutral; El Slightly fresh; or D Freshly plowed field smell
2. Site: D Irrigated; D Land leveled; Q Ditch drained; Q Pumped; Q Graded to drain via slope
3. Soils: El do D do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
,
[
[
•
1*
V
i
M
m
•L
m
m
WETLAND DETERMINATION
Hydrophytic Vegetation Present?
Wetland Hydrology Present?
Hydric Soils Present?
El Yes
El Yes
El Yes
D No
D No
D No
Is this Sampling Point within a Wetland? |3 Yes D No Kr
Transition between edge of marsh and upland area. |L_
Remarks:
1. Possibly water of the U.S.? IS Yes Q No
2. Possibly exempt from Corps/EPA Regulation? Q Yes El Wo (If yes, check item(s) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfflled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
m
In
Additional Comments/Remarks:
Approved by HQUSACE 3/92 ||
Ml
m
m
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Schcid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes El No
Is the area a potential Problem Area? D Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Willow
scrub/Alkali marsh
Transect ID:
Plot ID: 7
VEGETATION
Dominant Plant Species
1 . Salix lasiolepis
2. Baccharis salicifolia
3. Frankenia salina
4. Salicornia virginica
5. Juncus mexicanus
6.
7.
8.
Stratum
Tree
Shrub
Herb
Herb
Herb
Indicator
FACW
FACW
FACW
OBL
FACW
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (ioo%)
Remarks:
1. Assume presence of wetland vegetation? El Yes Q No
2. Rooted emergent vegetation present? Q Yes E3 No
HYDROLOGY
G Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water
Depth to Water in Pit:
Depth to Saturated Soil:
NA (in.)
Greater than 12 (in.]
6. (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
El Saturated in: El Upper 12" El 13-18'
D Water Marks
D Drift Lines
D Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
El Oxidized Root Channels in: El Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-NeirtralTest
D Other (Explain in Remarks)
Observations and Remarks:
1. Filamentous or sheet forming algae present? D Yes El No
2. Slope: El 0-2%; or Q >2%
3. Oxidized rhizospheres: \3 new roots only; n old roots only; D new and old roots, El none
4. Flooding: D none, flooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: Q very brief, if <2 days; D brief, if 2-7 days, or El long, if >7 days
6. Site ponds water? H Ves Q No Local ponding in depressions
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Pachic HaploxeroU
Drainage Class: MWD* l*i
Permeability: Veiy slow ^
Runoff: Medium ^
Field Observations: 1
Confirm Mapped Type? El Yes D No **
Profile Descripl on: 1
Depth
(inches)
0-18
Horizon
Matrix Color
(Munsell Moist)
10YR3/1
Mottle Colors
(Munsell Moist)
Mottle Abundance/
Contrast
m
Texture, Concretions,
Structures, etc. f*
sandy clay loam PVrji
Hydric Soil Indicators:
Q Histosol D Concretions 9
C Histic Epipedon Q High Organic Content in Surface Layer in Sandy Soils
Q Sulfidic Odor Q Organic Streaking in Sandy Soils *
Q Aquic Moisture Regime Q Listed on Local Hydric Soils List
El Reducing Conditions D Listed on National Hydric Soils List n
El Gleyed or Low-Chroma Colors D Other (Explain in Remarks) '
Oberservations and Remarks:
1. Smell: Q Neutral; & Slightly fresh; or C] Freshly plowed field smell
2. Site: D Irrigated; Q Land leveled; Q Ditch drained; Q Pumped; D Graded to drain via slope
3. Soils: El do Q do not become frequently ponded or saturated for long (>7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophyte Vegetation Present?
Wetland Hydrology Present?
Hydric Soils Present?
H Yes
El Yes
El Yes
D No
D No
D No
Is this Sampling Point within a Wetland? I
Hi
3 Yes D No mP
Remarks:
1. Possibly water of the U.S.? IS Yes D No
2. Possibly exempt from Corps/EPA Regulation? Q Yes El Wo (If yes, check item(s) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) D Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) D Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 32B.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks:
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Schcid
Do Normal Circumstances exist on the site? El Yes D No
Is the site significantly disturbed (Atypical Situation)? D Yes El No
Is the area a potential Problem Area? D Yes El No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Alkali/Salt
Marsh
Transect ID:
Plot ID: 8
VEGETATION
Dominant Plant Species
1 . Cressa tnailiensis
2.
3. Frankenia salina
4. Salicornia virginica
5.
6.
7.
8.
Stratum
Heib
Herb
Heib
Indicator
FACW
FACW
OBL
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 100% (ioo*)
Remarks:
1. Assume presence of wetland vegetation? ^ Yes D No
2. Rooted emergent vegetation present? Q Yes E3 No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA (in.)
Greater than 12 (in.)
6_ (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
D Saturated in: D Upper 12" D 13-18"
D Water Marks
D Drift Lines
D Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
IS Oxidized Root Channels in: IS Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks: This marsh area is isolated from the Aqua Hedionda marsh by Highland Valley Road
1. Filamentous or sheet forming algae present? D >"es H A/o
2. Slope: El 0-2%; or D >2%
3. Oxidized rhizospheres: Q new roots only; D old roots only; El new and old roots, D none
4. Flooding: Q none, flooding not probable; Q rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once in
2 years.
5. Duration: D very brief, if <2 days; D Mel', if 2-7 days, or E) long, if >7 days
6. Site ponds water? fflYes Q A/b Local ponding in depressions
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Pachic Haploxeroll
Profile Description:
Depth
(inches)
0-18
Horizon
Drainage Class: MWD* I
Permeability: Veiy slow
Runoff: Medium
Field Observations:
Confirm Mapped Type? El Yes D No
Matrix Color
(Munsell Moist)
10YR3/1
Mottle Colors
(Munsel! Moist)
5YR6/8
Mottle Abundance/
Contrast
small, abundant
Texture, Concretions,
Structures, etc.
clay loam
Hydric Soil Indicators:
D Histosol D Concretions
G Histic Epipedon D High Organic Content in Surface Layer in Sandy Soils
n Sulfidic Odor G Organic Streaking in Sandy Soils
G Aquic Moisture Regime D Listed on Local Hydric Soils List
El Reducing Conditions D Listed on National Hydric Soils List
El Gleyed or Low-Chroma Colors D Other (Explain in Remarks)
Oberservations and Remarks:
1. Smell: G Neutral; El Slightly fresh; or G Freshly plowed field smell
2. Site: Q Irrigated; Q Land leveled; G Ditch drained; Q Pumped; G Graded to drain via slope
3. Soils: El do Q do not become frequently ponded or saturated for long(> 7 days) to very long durations
(>30 days) during the growing season
It
Cc
m
m
tt
ft
If
m
m
m
m
M.
m
WETLAND DETERMINATION
Hydrophytic Vegetation Present? E| Yes
Wetland Hydrology Present? El Yes
Hydric Soils Present? El Yes
D No
D No
D No
Is this Sampling Point within a Wetland? El Yes D No
Remarks:
1. Possibly water of the U.S.? El Yes Q Wo
2. Possibly exempt from Corps/EPA Regulation? Q Yes El Wo (If yes, check item(s) below.)
(a) G Non-tidal drainage and irrigation ditches excavated on dry land
(b) G Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) G Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) G Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) G Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
•r™jj
•f
Approved by HQUSACE 3/92
Additional Comments/Remarks:
m
DATA FORM
ROUTINE ON-SITE DETERMINATION METHOD
Project/Site: Aqua Hedionda Sewer
Applicant/Owner: City of Carlsbad
Investigator(s): G. Scheid
Do Normal Circumstances exist on the site? B Yes Q No
Is the site significantly distorted (Atypical Situation)? Q Yes H No
Is the area a potential Problem Area? D Yes H No
(if needed, explain on reverse or attach separate sheet.)
Date: September 28, 1988
County: San Diego
State: CA
Community ID: Disturbed
Alkali Marsh
Transect ID:
Plot ID: 9
VEGETATION
Dominant Plant Species
1 . Brassica nigra
2. Ambrosia psilostachya
3. Malvella leprosa
4.
5.
6.
7.
8.
Stratum
Herb
Herb
Herb
Indicator
UPL
FAC
FAC
Dominant Plant Species
9.
10.
11.
12.
13.
14.
15.
16.
Stratum Indicator
Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 66% (0%)
Remarks:
1. Assume presence of wetland vegetation? E3 Yes Q No
2. Rooted emergent vegetation present? Q Yes E3 No
HYDROLOGY
D Recorded Data (Describe in Remarks):
D Stream, Lake or Tide Gauge
D Aerial Photographs
D Other
El No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Water in Pit:
Depth to Saturated Soil:
NA_ (in.)
Greater than 12 (in.)
6. (in.)
Wetland Hydrology Indicators:
Primary Indicators:
D Inundated
D Saturated in: D Upper 12" D 13-18"
D Water Marks
D Drift Unes
El Sediment Deposits
D Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
El Oxidized Root Channels in: Q Upper 12"
El 13-18"
D Water-Stained Leaves
D Local Soil Survey Data
D FAC-Neutral Test
D Other (Explain in Remarks)
Observations and Remarks: This mush area is isolated from the Aqua Hedionda marsh by Highland Valley Road
1. Filamentous or sheet forming algae present? D Ves El Ato
2. Slope: El 0-2%; or D >2%
3. Oxidized rhizospheres: D new roots only; Q old roots only; H new and old roots, Q none
4. Flooding: Q none, flooding not probable; D rare, unlikely but possible under unusual weather conditions;
D occasional, occurs on an average of once or less in 2 years; or H frequent, occurs on an average of more than once in
2 years.
5. Duration: O very brief, if <2 days; D brief, if 2-7 days, or & long, if >7 days
6. Site ponds water? g| Yes Q No Local ponding in depressions
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam
Taxonomy (Subgroup): Calcic Pachic Haploxeroll
Drainage Class: MWD* ••
Permeability: Very slow ^
Runoff: Medium ^
Field Observations: I
Confirm Mapped Type? H Yes Q No M
Profile Description: 1
Depth
(inches)
0-16
16-18
Horizon
Matrix Color
(Munsell Moist)
10YR5/2
10YR3/1
Mottle Colors
(Munsell Moist)
5YR6/8
5YR6/8
Mottle Abundance/
Contrast
faint at 12 inches
small
MTexture, Concretions, nS
Structures, etc. Ill
|
sandy loam &•
mclay loam r
iW
Hydric Soil Indicators:
U Histosol
D Histic Epipedon
D SulfidicOdor
D Aquic Moisture Regime
H Reducing Conditions
H Gleyed or Low-Chroma Colors
D Concretions
D High Organic Content in Surface Layer in Sandy Soils
D Organic Streaking in Sandy Soils
D Listed on Local Hydric Soils List
D Listed on National Hydric Soils List
D Other (Explain in Remarks)
Oberservations and Remarks:
1. Smell: n Neutral; E3 Slightly fresh; or Q Freshly plowed field smell
2. Site: Q Irrigated; \3Landleveled; Q Ditch drained; Q Pumped; Q Graded to drain via slope
3. Soils: B do D do not become frequently ponded or saturated for long(> 7 days) to very long durations
(>30 days) during the growing season
WETLAND DETERMINATION
Hydrophytic Vegetation Present? El Yes Q No
Wetland Hydrology Present? H Yes Q No
Hydric Soils Present? H Yes Q No
Is this Sampling Point within a Wetland? 13 Yes Q No
Transition between edge of marsh and upland area.
Remarks:
1. Possibly water of the U.S.? El Yes Q Wo
2. Possibly exempt from Corps/EPA Regulation? D Yes IS No (If yes, check item(s) below.)
(a) D Non-tidal drainage and irrigation ditches excavated on dry land
(b) D Artifically irrigated areas which would revert to upland if the irrigation ceased.
(c) D Artificial lakes or ponds created by excavating and/or diking dry land to collect and retain water and which are used
exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing.
(d) Q Artifical reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry
land to retain water for primarily aesthic reasons.
(e) Q Waterfilled depressions created in dry land incidental to construction activity and pits excavated in dry land for the
purpose of obtaining fill, sand, or gravel unless and until the construction or excavation operation is abandoned and the
resulting body of water meets the definition of waters of the United States (see 33 CFR 328.3(a)).
Approved by HQUSACE 3/92
Additional Comments/Remarks: