HomeMy WebLinkAbout3821; Calavera Lake Creek & Agua Hedionda Creek; Lake Calavera Biological Resources Report; 2002-04-18I
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BIOLOGICAL RESOURCES REPORT
LAKE CALAVERA
Prepared for:
City of Carlsbad
1635 Faraday Avenue
Carlsbad, CA 92008
Attention: Mr. Chris Muehlbacher
Prepared by:
Merkel & Associates, Inc.
5434 Ruffin Road
San Diego. CA 92123
Contact: Kyle L. Ince
Phone: (858)560-5465
Fax: (858)560-7779
April 18,2002
(Revised May 1,2003)
'^'rincipal Consultant, Keith W. Merkel
L'ead Biologist, Kyle L. Ince
'•' Lake Calavera May 1, 2003
d TABLE OF CONTENTS
y SUMMARY 1
INTRODUCTION 1 a LOCATION 2
GENERAL PHYSIOGRAPHY 2
_ METHODS 2
y GENERAL B IOLOGIC AL INVESTIGATIONS 2
BOTANICAL INVESTIGATIONS 4
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WETLANDS DELINEATION 4
Vegetation 5
Hydrology 5
Soils 5
U.S, Army Corps of Engineers Jurisdiction 5
On-site U.S. Army Coqjs of Engineers Jurisdiction 6
California Department of Fish and Game Jurisdiction 6
ZOOLOGICAL INVESTIGATIONS 7
BATHYMETRY 7
SCIENTIFIC AND VERNACULAR NOMENCLATURE 7
RESULTS 7
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B VEGETATION/HABITAT COMMUNITIES 7
Diegan Coastal Sage Scrub (Holland Code 32500) 8
Diegan Coastal Sage Scrub Revegetation 8
S Southern Mixed Chaparral (Holland Code 37120) 8
m Coastal Sage-Chaparral Scrub (Oberbauer Code 37G00) 10
Coyote Brush Scrub 10
m Mule Fat Scrub (Holland Code 63110) 10
^ Southern Willow Scrub (Holland Code 63320) 10
Southern Coast Live Oak Riparian Forest (Holland Code 61310) 10
Valley Needlegrass Grassland (Holland Code 42110) //
ffl Non-native Grassland (Holland Code 42200) 11
m Coastal and Valley Freshwater Marsh (Holland Code 52410) 11
Cis-montane Alkali Marsh (Holland Code 52310) 11
Open Water (Oberbauer Code 13100) 11
'M Non-native Vegetation [Exotic Plantings} (Oberbauer Code 11000) 12
Disturbed Land 12
Urban/Developed (Oberbauer Code 12000) 12 I WETLANDS AND JURISDICTIONAL NON-WETLAND RESOURCES 12
Southern Willow Scrub 12
Mule Fat Scrub 14
(Southern Coast Live Oak Riparian Forest 14
Coastal and Valley Freshwater Marsh 14
Cis-montane Alkali Marsh 14
Non-Wetland Waters of the U.S. 14
I ZOOLOGICAL RESOURCES 14
Fish 14
Amphibians 75
I Reptiles 15
Birds 16
Mammals 17
SENSITIVE BIOLOGICAL RESOURCES 17
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gg Sensitive Habitats Identified On-site jy
Diegan Coastal Sage Scrub I ^
^ Valley Needlegrass Grassland ^ g
Wetlands
iW Wetlands Functions and Values Ig
Wildlife Movement Corridors 18
p, Sensitive Plants Identified Within Study/Survey Area 20
|j Sensitive Wildlife Identified On-site 22
•* SENSITIVE SPECIES POTENTIALLY OCCURRING ON-SITE Z....Z25
^ DISCUSSION 25
y EXPECTED BIOLOGICAL RESOURCE IMPACTS 25
Outlet Tower 25
Wetland Impacts 28
Coastal and Valley Freshwater Marsh 29
y Southern Willow Scrub 29
Mule Fat Scrub 29
Cis-montane Alkali Marsh 29
Coast Live Oak Riparian Forest 29
Additional Wetland Impacts 29
Upland Impacts 3Q
PI Wildlife Impacts 20
y Other Project Impacts ^2
Access Road 22
Improved Site and facility security (fencing and gates) 32
(•I Other 22
RECOMMENDATIONS TO AVOID, REDUCE OR MITIGATE IMPACTS .ZZZ^Z..."'.... 33
Additional Focused Surveys 3^
Least Bell's Vireo 34
Coastal California Gnatcatcher 34
^ Southwestern Pond Turtle 34
General Recommendations
^ OTHERLOCAL, STATE, AND FEDERAL REGULATORY PROGRAMS 37
y LITERATURE CITED 3g
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LIST OF TABLES
Table 1. Date, Time, and Conditions of Field Surveys 4
Table 2. Vegetation Acreages 28
LIST OF FIGURES
Figure 1. Lake Calavera Project Vicinity Map 3
Figure 2. Lake Calavera Biological Resources 9
Figures. Wetland Resources 13
Figure 4. Preliminary Plan View of Proposed Project 27
LIST OF APPENDICES
Appendix 1. Floral Checklist of Species Observed
Appendix 2. Faunal Checklist of Species Observed
Appendix 3. Wetland Data Forms
Appendix 4. Wetland Photo Points
Appendix 5. Sensitive Species - Potential Presence and Status
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m BIOLOGICAL RESOURCES REPORT
LAKE CALAVERA
Mi Merkel & Associates, Inc.
April 18,2002
!n {Revised May 1,2003) y
m SUMMARY
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Biological surveys of the Lake Calavera study area were conducted by Merkel & Associates, Inc.
between January 23 and March 20, 2002. The surveys revealed the presence of various upland and
wetland vegetation types. Upland vegetation types included Diegan Coastal Sage Scrub, Coyote
Brush Scrub, Valley Needlegrass Grassland, Southern Mixed Chaparral, and Non-native Grassland.
Jurisdictional wetland vegetation types included Southern Willow Scrub, Mule Fat Scrub, Coastal
and Valley Freshwater Marsh, Cis-montane Alkali Marsh and Coast Live Oak Riparian Forest.
Several sensitive species were observed on-site. Sensitive wildlife species observed included the
Coastal California Gnatcatcher {Polioptila californica califomica). Rufous-crowned Sparrow
(Aimophila ruficeps canescens) and Loggerhead Shrike {Lanius ludovicianus). Sensitive plant
species detected included California Adolphia {Adolphia californica). Southwestern Spiny Rush
{Juncus acutus ssp. leopoldii), and Western Dichondra {Dichondra occidentalis). Various other
sensitive species may also occur within the study area; however, focused surveys would be required
to determine their presence/absence on-site. Potentially occurring sensitive species include the Least
Bell's Vireo {Vireo bellii pusillus) and Southern Pacific Pond Turtle {Clemmys marmorata pallida).
As part of this biological study, an analysis of potential impacts to biological resources associated
with the proposed project is provided. For the purposes of this report, the proposed project includes
replacing the inoperable outlet tower; repairing the existing spillway structure; improving the access
road; and providing improved site and facility security. The project site area is approximately 3.8
acres. In addition, a general analysis of potential impacts to biological resources occurring as a result
of water level drawdown of Lake Calavera is provided with this report. Potential biological impacts
have been identified to occur to approximately 27.22 acres of federal and/or state regulated
jurisdictional waters including 14.45 acres of wetland habitat. These impacts are based on an
estimated Project Biological Impact Zone (PBIZ) provided with this report. Impacts to these
resources and associated fauna would be considered significant. Recommendations are provided to
reduce potential biological impacts. In addition, recommendations to determine the status of various
sensitive species within the study area including the Least Bell's Vireo and Southern Pacific Pond
Turtle are also provided.
INTRODUCTION
This document reports the results of the biological surveys and jurisdictional wedand delineation
performed by Merkel & Associates (M&A) at the Lake Calavera site on behalf of the City of
Carlsbad. The purpose of the work was to identify biological resources including vegetation
communities, jurisdictional wetlands, and sensitive plant and animal species, which occur on-site or
may potentially occur on-site. In addition, potential biological impacts associated with the proposed
project which includes a temporary drawdown of the reservoir are also analyzed with this report.
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LOCATION
The survey area comprises Lake Calavera as well as adjacent riparian and upland habitats. The site
ii {i.e., survey area) is located within unsectioned lands of the Agua Hedionda land grant found on the
southeastern portion of USGS 7.5 San Luis Rey Quadrangle (Figure 1). The UTM designation is
D 473,500E and 3,670,000N. Open space lands of the City of Carisbad border to the northeast,
residential housing to the northwest, and open space lands of Robertson Ranch to the southwest. The
Calavera Nature Preserve and Cerro de la Calavera {Mount Calavera) occur to the southeast of the
• site.
GENERAL PHYSIOGRAPHY
The site is situated along a U.S.G.S. unnamed tributary to Agua Hedionda Creek, which occurs
approximately one mile southwest of the study area. This drainage has been identified as Calavera
Creek by others {CGvL 2001). The site contains/encompases a man-made earth-fill dam and
reservoir {called Lake Calavera) that currendy impounds runoff from the upper Calavera Creek
watershed. Construction of the dam, and creation of the reservoir/impoundment has
effected/impacted site physiography. Slopes draining into the reservoir range from gentle on the
northern side to steep on the flanks of Mount Calavera to the south. Underiying geology is mapped
as Tertiary* intrusive rhyolite (flanks of Mount Calavera), Eocene marine, Mesozoic basic intrusive,
Pre-Silurian metavolcanic, and Upper Cretaceous marine (Rogers 1965). On-site soils comprise Las
Posas stony fine sandy loam, Friant rocky fine sandy loam. Las Flores loamy fine sand, Altamont
clay, and Loamy Alluvial lands of the Huerhuero complex (Bowman 1973).
Lake Calavera is an unlined, uncovered water storage reservoir formed by a 65-foot high, 490-foot-
long compacted earthen fill dam (CGvL 2001). The reservoir bottom is comprised of decomposed
granite and was excavated in 1940 to a elevation of 160 feet amsl beneath the dam (CGvL 2001).
Originally, the reservoir was called Fraser Dam but the name was changed to reflect the prominence
of adjacent Mount Calavera. The reservoir was filled by 1943 and used initially for drinking water.
Approximately 300 acre-feet of water are retained as runoff and to reduce downstream flooding.
Surface water levels are controlled by an outlet tower located at the dam.
The adjacent Mount Calavera is composed of an ancient volcanic extrusion. This approximately 22
million-year-old "plug" is a mass of rock that solidified inside the original volcano and was exposed
when the exterior eroded away. Mount Calavera is one of only three volcanic plugs in southern
California. In the 1900s the plug was mined for gravel, but these activities were terminated around
1930.
METHODS
GENERAL BIOLOGICAL INVESTIGATIONS
Biological field surveys were conducted according to the times and under the environmental
conditions listed in Table 1.
Merkel & Associates, Inc. #01-068-01
BEST ORIGINAL
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1"-2,000'
Lake Calavera
Project Vicinity Map
Source: USGS 7.5' San Luis Rey, CA Quadrangle
Figure
1
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Date Survey Time Conditions Biologists
23 January
2002 General Biological Survey 0930-1600
Cloud Cover: 0%
Wind: 0-5 mph.
Temp: 6^^ F
Eric Lichtwardt
Kyle Ince
31 January
2002
General Biological Survey
Jurisdictional Wetland Delineation 1100-1600
Cloud Cover: 0%
Wind: 0-5 mph.
Temp: 68-70° F
Kyle Ince
Vanessa Lee
Kara Altvater
12 February
2002 General Biological Survey 0730-1230
Cloud Cover: 0%
Wind: 0-5 mph
Temp: 48-70° F
Geoffrey Rogers
14 February
2002
General Biological Survey
Jurisdictional Wetland Delineation 1000-1630
Cloud Cover: 10%
Wind: 0-5 mph.
Temp: 66-70° F
Kyle Ince
Vanessa Lee
Kara Altvater
15 February
2002 Jurisdictional Wetland Delineation 1100-1600
Cloud Cover: 0%
Wind: 0-5 mph
Temp: 68-72° F
Vanessa Lee
Kara Altvater
21 February
2002 General Biological Survey 0830-1500
Cloud Cover: 0%
Wind: 0-5 mph.
Temp: 63-90° F
Kyle Ince
Geoffrey Rogers
5 March
2002 General Biological Survey 0830-1200
Cloud Cover: 0-10%
Wind: 0-5 (BS)
Temp: 63-70° F
Kyle Ince
Geoffrey Rogers
20 March
2002
Bathymetry 1000-1630
Cloud Cover: 0-10%
Wind: 0-5 mph.
Temp: 66-70° F
Kyle Ince
Kevin Cull
BOTANICAL INVESTIGATIONS
Vegetation present on the site was characterized using the classification system of Holland (1986)
and Oberbauer (1996). Both systems are congruous with the Habitat Management Plan for the City
of Carlsbad (City of Carlsbad 1999). Vegetation was plotted on a 1" = 100' ortho-photo in the field
and later transferred to an ArcView format. Plant species present within the study area were
identified in the field or voucher specimens were collected for later identification. Plant species
identified within the study area are listed in Appendix I. In addidon to the data obtained during the
field investigation, relevant information regarding the distribution of sensitive species was obtained
from the California Natural Diversity DataBase.
WETLANDS DELINEATION
M&A biologists, Vanessa A. Lee and Kara A. Altvater, conducted wetlands delineation work on
January 31, February 14, and February 15, 2002. Delineations of the site were performed using the
routine on-site determination methods noted in the 1987 Army Coips of Engineers' (ACOE, Corps)
Wetland Delineation Manual (Army Corps of Engineers 1987); however, these boundaries may
change based upon regulatory agency review and interpretation by agency personnel. In addition, the
delineadon effort was expanded to identify non-wetland waters under federal jurisdiction and
streambeds under the jurisdiction of the California Department of Fish and Game (CDFG). Wetlands
and other jurisdictional waterways were plotted on a 1" = 100' ortho-photo map of the project site
dated February 2001. Existing conditions based on current survey dates were mapped. Streambed
widths were noted on the map to provide true jurisdictional dimensions. Evidence supporting
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m jurisdictional determinations was recorded on wetland field data forms and depicted in photographs
of the project site (Appendix 3 and 4, respectively).
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y The following text describes the three parameters used to determine the presence/absence of wetlands
and non-wetland water streambeds occurring on the project site. Additional information on the
S overall delineation process and regulatory jurisdictions may be found in the federal delineation
manual (U.S. Army Corps of Engineers 1987), state and federal enacting legislation, or through
guidance provided by judicial interpretation, solicitors opinions, and regulatory guidance issued to
District Corps' offices and CDFG field staff.
Vegetation
Vegetadon communities which met the criteria of wetland-associated vegetation were dominated by
a preponderance of species classified as obligate wedand plants (OBL), facultative wetland plants
(FACW), or facultative plants (FAC) based on the National List of Plant Species that Occur in
Wetlands (ACOE 1987). Non-wetland waters typically lacked vegetation or were dominated by
annual upland species, but exhibited wetland hydrologic characteristics.
Hydrology
Hydrologic wetland indicators included both surficial and sub-surficial characteristics. Most of the
flow information consisted of drainage patterns. Further flow evidence included water-damaged
vegetation and localized erosion patterns. Additionally, hydrologic indicators were used to define
non-wetland Waters of the United States
Soils
To confirm the presence of hydric soils, soil test pits were excavated using a shovel. Soils taken at
depths ranging from 12 to 18 inches were examined for physical and chemical evidence of hydric
conditions. Excavated soils were evaluated using the chroma index fi-om the Munsell Soil Color
Charts (Munsell Color 1974), although soil color was not used as the only indicator in the study
area's mineral sandy soils. Additional indicators of hydric soils such as vertical streaking, high
organic matter content in the surface horizon, motding, and sulfidic odor were evaluated during the
delineation.
WeUands and jurisdicfional waters existing on the project site are regulated by one or both of the
following: Section 404 of the Clean Water Act (U.S. Army Corps of Engineers 1987) regarding
discharge of dredged or fill materials into the waters of the United States; and sections 1600 et seq. of
the California Fish & Game Code which regulates modifications to streambeds.
U.S. Army Corps of Engineers Jurisdiction
Under section 404 of the Clean Water Act, the ACOE has regulatory authority over the discharge of
dredged or fill materials into the waters of the United States (1344 USC). The term "waters of the
United States" is defined in 33 CFR Part 328 and includes: (1) ail navigable waters (including all
waters subject to the ebb and flow of the tide); (2) all interstate waters and wetlands; (3) all other
waters such as intrastate lakes, rivers, streams, (including intermittent streams), mudflats, wetlands,
sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use, degradation or
destruction of which could affect interstate or foreign commerce; (4) all impoundments of water
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m mentioned above; (5) all tributaries to waters mentioned above; (6) the territorial seas- and (7) all
wetlands adjacent to waters mentioned above. Judicial interpretation under the recent U.S. Supreme
^ Court rulmg on the case of Solid Waste Agency of Northern Cook County (SWANCC) v. U.S. Army
Ii Corps of Engineers has narrowed the historic reading of jurisdiction under 33CFR 328(a)(3).
B in the absence of wetlands, the limits of ACOE jurisdiction in non-tidal waters, such as intermittent
streams, extend to the ordinary high water mark (OHWM) which is defined at 33 CFR 328.3(e) as:
... that line on the shore established by the fluctuation of water and indicated by
physical characteristics such as clear, natural line impressed on the bank, shelving,
changes in the character of soil, destruction of terrestrial vegetation, the presence of
litter and debris, or other appropriate means that consider the characteristics of the
surrounding areas.
Wetlands are defined at 33 CFR 328.3(b) as "those areas that are inundated or saturated by surface or
ground water at a frequency and duration sufficient to support... a prevalence of vegetation typically
adapted for life in saturated soil conditions."
On-site U.S. Armv Corns of Engineers Jurisdiction
The site includes a reservoir which was created on an existing drainage (i.e., Calavera Creek) Under
section 404 and as defined in 33 CFR Part 328.3 the Corps defines waters of the United States to
include waters such as intrastate lakes, rivers, and streams (including intermittent streams). In
addition, waters of the United States also include all impoundments of these waters. The site's
existing reservoir would be considered an impoundment of a waters of the U.S.. The limits of
Jurisdiction would extend to the ordinary highwater mark of the reservoir (i.e., spillway elevation)
but would also extend to all adjacent wetlands. The term adjacent wetlands as discussed in Part
328.3 (8c) means bordering, contiguous, or neighboring. These include waters of the U.S. separated
by manmade dikes or barriers, natural river berms, beach dunes and the like.
California Department of Fish and Game Jurisdiction
The California Department of Fish & Game (CDFG) regulates alterations of "streambeds" through
the development of a Streambed Alteration Agreement pursuant to Division 2, Chapter 6, sections
1600-1603 of the Fish and Game Code. An Agreement is required whenever a project would "divert,
obstruct or change the natural flow or bed, channel or bank of any river, stream or lake designated by
the Department."
The breadth of areas subject to regulation by CDFG under section 1600 are less cleariy defined than
those regulated by ACOE; however, in general, the policies are fairly consistent. It is clear that all
rivers, streams, lakes and streambeds which may exhibit intermittent flows of water are covered by
the California statutes. Section 1600 et seq. does not extend to isolated wetlands and waters such as
small ponds not located on a drainage course, wet meadows, vernal pools, or tenajas as does federal
jurisdiction. Furthermore, department jurisdicdon does not extend over tidal waters. However,
section 1600 et seq. jurisdiction extends over all riparian habitat supported by a river, stream, or lake
regardless of the riparian area's federal wedand status.
Unlike the ACOE process, the Streambed Alteration Agreement is not a discrefionary permit, but
rather an Agreement developed between an applicant and CDFG with mitigation, impact reduction.
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or avoidance measures. These measures are subject to acceptance by the applicant or may be
countered with alternative measures. If an Agreement cannot be reached between CDFG and the
applicant, a formal arbitration process is available.
ZOOLOGICAL INVESTIGATIONS
Animal species within the study area were identified by direct observation or idendfication of their
songs and calls, tracks, scats, burrows, or other sign. A list of all vertebrate species observed within
the study area was compiled in the field (Appendix 2). Special attenfion was given to the detection
of sensitive species associated with riparian habitats and Diegan Coastal Sage Scrub. In addition to
the data obtained during the field investigation, relevant information regarding the distribution of
sensitive species was obtained from the California Natural Diversity Data Base.
General Survey Limitations
Biological inventories are subject to various limitations. These can be due to survey time constraints
including, survey methodology, season, and time of day. Many animal species are highly secretive,
nocturnal, or require special survey techniques to detect their present. Some species, such as annual
plants, various insects, and migratory birds are only seasonally present. Surveys were conducted
mostly during the late winter period prior to the germination of many annual plants or presence of
spring migratory birds.
BATHYMETRY
Bathymetry for Lake Calavera was created by collecting depth (fathometer) readings ft-om a survey
vessel as it circumnavigated the lake. Survey tracks initially followed the existing shoreline and
spiraled their way toward the middle of the lake. Depth readings were collected every second and
stored on a computer along with latitude and longitude (x,y) coordinate data that was determined
using a Leica 400 differential GPS (accurate to approximately 1 meter). The data points were
processed through Arc View Spatial Analyst to create bathymetric lines of equal elevation.
SCIENTIFIC AND VERNACULAR NOMENCLATURE
The scientific and vernacular nomenclature used in this report is from the following standard
references: vegetation and wildlife habitat, Holland (1986); flora. Skinner and Pavlik (CNPS) 1994
and Hickman (1993); birds, American Ornithologists' Union (1989); reptiles and amphibians, Crother
(2000); and mammals, Jones et. al. (1997) and Wilson and Cole (2000). Animal subspecies are noted
only when the California Department of Fish and Game or the United States Fish and Wildlife
Service lists a specific subspecies as sensitive. The standard vernacular names of plants and animals
are capitalized in this report.
RESULTS
VEGETATION/HABITAT COMMUNITIES
A total of 16 vegetadon types were mapped within the study area (Figure 2): Diegan Coastal Sage
Scrub, Diegan Coastal Sage Scrub Revegetation, Southern Mixed Chaparral, Coastal Sage-Chaparral
Scrub, Coyote Brush Scrub, Mule Fat Scrub, Southern Willow Scrub, Southern Coast Live Oak
Riparian Forest, Valley Needlegrass Grassland, Non-native Grassland, Coastal and Valley
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Freshwater Marsh, Cis-montane Alkali Marsh, Open Water, Non-native Vegetation (Exotic
Plantmg), Disturbed Land, and Urban/Developed. Each of these vegetation types is characterized
below.
Diegan Coastal Sage Scrub (Holland Code 32500)
A majority of the native upland vegetation that occurs on the property is classified as Diegan Coastal
Sage Scrub. This habitat is a drought deciduous community dominated by various sub-shrub species
North of the reservoir, on predominately south-facing gentle slopes, this habitat includes Coastal
Sagebrush (Artemisia californica). Flat-top Buckwheat (Eriogonum fasciculatum var. foliolosum)
California Encelia (Encelia californica). Black Sage (Salvia mellifera). White Sage (Salvia apiana)
and taller shrubs such as Laurel-leaf Sumac (Malosma laurina), Toyon (Heteromeles arbutifolia) and
Umonadeberry (Rhus integrifolia). These taller sage scrub plants often dominate the steep slopes
abutdng drainages.
The area south of the reservoir appears to be recovering from a recent fire. These north-facing slopes
typically are less exposed to the sun and as a result retain a higher soil moisture content The
vegetation here includes an abundance of Mesa Bush Mallow (Malacothamnus fasciculatus) a
common fire follower. Other species include Toyon, Black Sage, Coastal Sagebrush, Lemonadeberry
and San Diego Monkey Flower (Mimulus aurantiacus). Several shade adapdve shrubs including
Climbmg Bush Penstemon (Keckiella cordifolia). White Flowering Currant (Ribes indecorum), and
Fuchsia-flowered Gooseberry (Ribes speciosum) were also observed. Understory plants included
eariy appearing annual species such as Nuttall's Fiesta Flower (Pholistoma racemosum) and Padre's
Shooting Star (Dodecatheon clevelandii ssp. clevelandii).
Several sensitive plants were noted in Diegan Coastal Sage Scrub vegetation including Western
Dichondra (Dichondra occidentalis) and California Adolphia (Adolphia californica). These are
discussed further in the sensitive resources section of this report.
Diegan Coastal Sage Scrub Revegetation
Areas along the main entrance to the property are being restored to Diegan Coastal Sage Scrub
vegetation. An above-ground irrigation system fosters some areas of this habitat which includes
California Encelia, Coastal Sagebrush, Coastal Deerweed (Lotus scoparius var. scoparius) and Mesa
Bush Mallow.
Southern Mixed Chaparral (Holland Code 37120)
This fire adapted vegetation type occurs on north-facing slopes located on the south side of the
reservoir. It is dominated by broad-leaved deep-rooted shrubs, which range from 1 to 3 meters in
height. Common Chamise (Adenostoma fasciculatum) is the dominant species of this habitat. Other
shrubs are much less common and include Mission Manzanita (Xylococcus bicolor). Scrub Oak
(Quercus berberidifolia) and Toyon. The understory consists of mostly leaf litter with occasional
forbs such as Skunkweed (Navarretia hamata) and in shady areas Common Miner's-lettuce
(Claytonia perfoliata ssp. perfoliata).
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Figure 2
Lake Calavera
Biological Resources
study Boundary
HABITAT TYPES
Cis-montane Alkali Marsh
Coyote Bush Scrub
e Diegan Coastal Sage Scrub
Disturbed Land
Diegan Coastal Sage Scrub - Revegetation
I Non-native Vegetation (Exotic)
I Coastal and Valley Freshwater Marsh
I Southern Mixed Chaparral
I Mule Fat Scrub
H Non-native Grassland
Coast Live Oak Riparian Forest
Open Water
Coastal Sage-Chaparral Scrub
Southern Willow Scrub
Urban/Developed
Valley Needlegrass Grassland
SENSITIVE SPECIES
Ca = California Adolphia
Ja = Southwestern Spiny Rush
Sc = Ashy Spike Moss
Do = Western Dichondera
Pc = Coastal California Gnatcatcher
LI = Loggerhead Shrike
El = White-tailed Kite
Ar = Rufous-crowned Sparrow
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Lake Calavera May I, 2003
Coastal Sage-Chaparral Scrub (Oberbauer Code 37G00)
Coastal Sage Scrub and Mixed Chaparral habitats blend in .several areas on-site, particularly on the
south side of the reservoir. These areas include sage scrub plants such as Coastal Sagebrush and
Flat-top Buckwheat mixed with chaparral associates such as Common Chamise and Mission
Manzanita.
Coyote Brush Scrub
This vegetation type typically occurs in patches along broad tributary drainages to the south of the
reservoir. It includes monotypic stands of Coyote Brush (Baccharis pilularis) with very little
understory. In more mesic portions of this habitat, Brisdy Ox-tongue (Picris echioides) and Western
Poison Oak (Toxicodendron diversilohum) can also be found.
Mule Fat Scrub (Holland Code 63110)
Mule Fat Scrub is mapped along much of the southern side of the reservoir and is typically situated
between Freshwater Marsh and upland habitat such as Coastal Sage Scrub. Like Coyote Brush
Scrub, this a monotypic shrub community but with Mule Fat (Baccharis salicifoUa) as the
predominant species. Occasional young willows may also be found in this habitat, though in most
cases individual willows are mapped as Southern Willow Scrub. Understory plants include wedand
associates such as Saltgrass (Distichlis spicata) and in shady areas Cocklebur (Xanthium
strumarium).
Southern Willow Scrub (Holland Code 63320)
Southern Willow Scrub habitat is found in patches along the margin and is the dominant plant
community just upstream of the reservoir. Much of this habitat includes willow species ranging from
20 to 40 feet in height. Included here are Arroyo Willow (Salix lasiolepis). Lance-leaf Willow (Salix
lucida ssp. lasiandra) and the more robust Goodding's Black Willow (Salix gooddingii). Several
small groves of non-native Fan Palms (Wasliinf^tonia filifera) have invaded the upstream portion of
the site. In the most mesic locations, Freshwater Marsh habitat including dense stands of California
Bulrush (Scirpus californicus) and Broad-leaved Cat-tail (Typha latifolia) comprise the understory.
In drier areas, the understory includes a high diversity of shrub and herbaceous plant species. The
shrub layer includes Mule Fat, Sandbar Willow, and Western Poison Oak. The herbaceous layer
includes Verba Mansa (Anemopsis californica), San Diego Sedge (Carex spissa), Dombey's Spike-
sedge (Eleocharis montevidensis), and variety of rushes including Mexican Rush (Juncus
mexicanus), Mariposa Rush (Juncus dubius), and the sensitive Spiny Rush (Juncus acutus ssp.
leopoldii).
Southern Coast Live Oak Riparian Forest (Holland Code 61310)
Individual trees, as well as small groves (2 to 5 trees) of Coast Live Oak (Quercus agrifolia), occur
along slopes abutting the reservoir and several tributary drainages. Most of the oaks are mature trees
with a height and similar canopy width ranging from 20 to 40 feet. The understory includes mostly
leaf-litter which serves to keep the soil and roots of these trees cool and moist during the dry summer
months. Along the canopy fringe, several shade-adapted species were detected. Included here were
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Cinquefoil (Potentilla glandulosa ssp. glamlulosa), California Peony (Paeonia californica),
Checkerbloom (Sidalcea malvaeflora ssp. sparsifolia) and Coast Jepsonia (Jepsonia parryi).
Valley Needlegrass Grassland (Holland Code 42110)
A relatively large area of native grassland occurs near the southeastern corner of the study area.
Much of this area has recendy burned and as a result many of the less fire tolerant non-nadve species
have been eradicated. Purple Needlegrass (Nassella pulchra) dominates these areas and the clay
soils are conducive to a variety of spring blooming bulbs including Sharp-tooth Sanicle (Sanicula
arguta). Pacific Sanicle (Sanicula crassicaulis), and Blue-eyed-grass (Sisyrinchium helium).
Non-native Grassland (Holland Code 42200)
Much of the area south of the reservoir has been routinely brushed and as a result is limited in native
shrub vegetation. These areas meet the Multiple Habitat Conservation Plan's (MHCP) definition for
Annual (Nonnative) Grasslands since they comprise a mixture of annual grasses and broad-leaved
herbaceous species; non-native grasses typically comprise at least 30 percent of the vegetation.
Grasses common in these areas include Ripgut Grass (Bromus diandrus). Red Brome (Bromus
madritensis ssp. ruhens) and Wild Oat (Avena harbata). Forbs include non-native species such as
Short-pod Mustard, Black Mustard (Brassica nigra). Field Mustard (Brassica campestris). Long-
beak Filaree (Erodium hrochycarpum), as well as native species with weedy tendencies such as
Fascicled Tarplant (Hemizoniafasciculata), and Doveweed (Eremocarpus setigerus).
Coastal and Valley Freshwater Marsh (Holland Code 52410)
Freshwater Marsh habitat occurs along the margin of the reservoir in areas presenUy flooded by fresh
water. In these areas prolonged saturation permits accumulation of deep, peaty soils. This habitat is
dominated by a closed canopy of emergent monocots including Broad-leaved Cattail (Typha
latifolia) and California Bulrush (Scirpus californicus). Other herbaceous species including Salt
Marsh Fleabane (Pluchea odorata) and Pale Spike-sedge (Eleocharis macrostachya) occur along the
upper edge of this vegetation type.
Cis-montane Alkali Marsh (Holland Code 52310)
Patches of Cis-montane Alkali Marsh are found along the re.servoir margin and in other mesic
locations upstream of the reservoir. High evaporation and low input of freshwater render these areas
somewhat salty. The dominant species of this habitat is Saltgrass (Distichlis spicata). Other species
include non-native plants such as Annual Beard Grass (Polypogon monspeliensis) and Curly Dock
(Rumex crispus).
Open Water (Oberbauer Code 13100)
This category includes the reservoir and a small seasonal pond located along a drainage near the
northwestern corner of the site. Water levels are expected to fluctuate seasonally and fringe areas
mapped as open water likely become vegetated with Freshwater Marsh during the drier parts of the
year.
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Non-native Vegetation [Exotic Plantings] (Oberbauer Code 11000)
Non-native vegetation includes those areas dominated by non-native landscape plantings. Several
slopes within the study area are vegetated with common exotic ground covers such as Japanese
Honeysuckle (Lonicera japonica) and Acacia (Acacia redolens). Also included in this category are
shrubs such as Rock Rose (Cistus sp.) and exotic trees such as Brazilian Pepper Tree (Schinus
teribinthifolius) and Eucalyptus (Eucalyptus sideroxylon).
Disturbed Land
Areas mapped as this category follow the Multiple Habitat Conservation Plan (MHCP) definitions
for Disturbed Land. Per this definition, vegetative cover comprises less than 10 percent of the
surface area and there is evidence of soil surface disturbance and compaction (e.g., grading). Some
areas may exceed 10 percent vegetative cover; however, there is .soil disturbance and the presence of
debris. Disturbed Land is mapped for the earthen dam, access road and spillway channel, as well as
the numerous walking/bike trails that exist on the property.
Urban/Developed (Oberbauer Code 12000)
Urban/Developed is mapped for the paved access road that enters the property from the northwest
corner of the site.
WETLANDS AND JURISDICTIONAL NON-WETLAND RESOURCES
On the Lake Calavera site, four vegetation/habitat types are considered jurisdictional wedand habitat
types: Southern Willow Scrub, Mule Fat Scrub, Coastal and Valley Freshwater Marsh, and Cis-
montane Alkali Marsh. Also on-site are Non-wedand Waters of the U.S., including Open Water. In
addition, Southern Coast Live Oak Riparian Forest which is considered Adjacent Riparian Habitat by
the California Department of Fish and Game, was also mapped (Figure 3). Wedand delineation
forms and photographs of data points are found in Appendix 3 and 4, respectively. The following
discusses each of these habitat types in regard to the defining characteristics of hydrophytic
vegetation, hydric soils, and wedand hydrology.
Southern Willow Scrub
Approximately 14.8 acres of Southern Willow Scrub occurs within the study area. These patches of
vegetation are dominated by Lance-leaf Willow and Goodding's Black Willow (both OBL wedand
species), as well as Arroyo Willow (a FACW species). Understory plants include Mule Fat (FACW),
Blue Elderberry (FAC), Broad-leaved Cattail (OBL), and Mexican Rush (FACW).
Las Flores loamy fine sand is mapped for the western portion of Lake Calavera (Bowman 1973).
The Las Flores series consists of moderately well drained loamy fine sands with a sandy clay subsoil
(Bowman 1973). The eastern portion of the reservoir is mapped as Salinas clay loam (Bowman
1973). The Salinas series consists of well-drained and moderately well drained clay loams found on
flood plains and alluvial fans (Bowman 1973). Test pits within these areas revealed mosdy sandy
clay soils with low-chroma colors, motdes, and a high concentration of decomposed organic matter.
Drainage patterns and saturated soils indicated wedand hydrology.
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Lake Calavera May I, 2003
Mule Fat Scrub
Patches of Mule Fat Scrub occur to the north of the reservoir. This wetland habitat is dominated by
Mule Fat, a FACW species. Understory plants include wetland associates such as Saltgrass and Tall
Flatsedge, both FACW species. These areas are mapped as Las Flores loamy fine sand (Bowman
1973). Test pits revealed saturated clay soils with low-chroma colors and faint motding in the upper
12 inches.
Southern Coast Live Oak Riparian Forest
Approximately 1.97 acres of jurisdicdonal Southern Coast Live Oak Riparian Forest exist within the
Lake Calavera site. Patches of this vegetation community are primarily found to the south and east
of the reservoir. Although dominated by an upland species (Coast Live Oak) and thus not considered
wetlands by the Corps, the California Department of Fish and Game takes jurisdiction of these areas
as Adjacent Riparian Habitat. This jurisdicdon has been applied in numerous other recent projects.
Coastal and Valley Freshwater Marsh
Coastal and Valley Freshwater Marsh vegetadon occurs along most of the perimeter of the reservoir.
Monotypic stands of California Bulrush or Broad-leaved Cattail, obligate wetland species, comprise
these areas. Low-chroma matrix colors and redox depletion concentradons indicate hydric soils.
Wetland hydrology indicators in these areas include saturated soil in the upper 12 inches and free
water in test pits.
Cis-montane Alkali Marsh
Saltgrass, a FACW species, and Cocklebur, a FAC species, dominate areas of Cis-montane Alkali
Marsh. Hydric soils are indicated by sandy clay soils with a low-chroma matrix color and redox
concentrations. Saturated soils indicate hydrology.
Non-Wetland Waters of the U.S.
The jurisdicdonal Non-wetland Waters of the U.S./Streambed delineated on-site include mosdy
narrow drainage channels that are tributaries to Lake Calavera. These drainages are dominated by
upland species and do not possess hydric soils. Hydrology is indicated by drainage patterns (i.e., soil
disturbance indicadng evidence of flow).
ZOOLOGICAL RESOURCES
Fish
The only fish species specifically idendfied during the field work was the Mosquitofish (Gambusia
affinis). This species is not native to California, but due to wide spread introducdons, is now
ubiquitous in the state. A number of individuals were seen in the creek above the reservoir.
Largemouth Bass (Micropterus salmoides). White Crappie (Pomoxis annularis), Bluegill (Lepomis
macrochirus), and at least one species of catfish, probably Bullhead (Ameriurus sp.), are known to
exist in the reservoir (CDFG Biologist, D. Mayer, pers. comm.). No sensidve or native fish species
are expected to occur on-site.
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Amphibians
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^ Due to the dry surface conditions, few amphibians were found during the survey. An individual
Pacific Treefrog (Pseudacris regilla), found under a board near the reservoir, was the only amphibian
observed. The Garden Slender Salamander (Batrachoseps major) and Western Toad (Bufo boreas),
are also native amphibians expected to be present on the site. These species typically would be
acdve on the surface during periods of wet winter weather. The American Bullfrog (Rana
catesbeiana), an exotic species found throughout California, is also expected. This large frog is
known to have a negative impact on many species of native vertebrates that are associated with
wetland habitats. No habitat was noted on- site for the Arroyo Toad (Bufo californicus), which
prefers gravel flood terraces along creeks with shallow pools and areas of open sand.
Reptiles
The direct and indirect effects of human encroachment (i.e., ORV use, mountain biking, hiking, and
adjacent urbanizadon to the north of the site) has likely had a negative impact on most reptile species
occurring within the study area. Although the Western Fence Lizard (Sceloperous occidentalis) was
the only observed species, additional species are undoubtedly present. Other relatively common
lizards expected to occur include the Side-blotched Lizard (Uta stansburiana) and Southern Alligator
Lizard (Elgaria multicarinata). Sensidve lizard species known from the area and which may occur
on-site include Coast Horned Lizard (Phrynosoma coronatum), Coronado Skink (Eumeces
skiltonianus interparietalis), Belding's Orange-throated Whiptail (Cnemidophorus hyperthrus
beldingi). Coastal Western Whiptail (C. tigris multisculatus), and Legless Lizard (Anniella pulchra).
Both the Coast Horned Lizard and Orange-throated Whiptail are known from upland areas along
Agua Hedionda Creek, just south of the site.
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I. Snake species expected to occur on-site include Common Kingsnake (Lampropeltus getula).
Southern Pacific Ratdesnake (Crotalus viridis helleri). Striped Racer (Masticophis lateralis). Coast
Patchnose Snake (Salvadora hexalepis virguletea) and Gopher Snake (Pituophis melanoleucus).
Each of these species has been reported from within five miles of the study area in habitats similar to
Ii those found on-site. Other snakes with moderate potendal to occur on-site include Western Blind
Snake (Leptotyphlops humilis) Coachwhip (Masticophis flagellum), and San Diego Ringneck Snake
^ (Diadophis punctatus similis). Riparian edge habitats may also include the sensitive Two-striped
M Garter Snake (Thamnophis hammondi). This species is typically found in or near freshwater, often
along streams with rocky beds bordered by willows or other streamside growth. Other sensitive a snake species that may occur on-site include the Coastal Rosy Boa (Lichanura trivirigata roseofusca)
and Northern Red Diamond Rattlesnake (Crotalus ruber ruber).
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Southern Pacific Pond Turtle (Clemmys marmorata pallida) is considered a sensitive species that has
been largely extirpated from freshwater habitat in southern California. Their continued existence
depends on high quality undisturbed streams and lakes that have numerous haul-out sites along shore.
Haul-out sites are limited along the lakeshore given the dense erect stands of Cattail and Bulrush
present. Inspections of these areas during survey work did not reveal the presence of turtles. In
addidon, no turtles were captured in turtle-traps that were left overnight in two potential haul-out
areas; however, additional trapping surveys would be required to more effecdvely determine
presence/absence.
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m The Slider (Trachemys scripta) is a commonly introduced turtle to our county lakes and reservoirs.
This species which was once abundantly sold in pet stores, shares similar habitats of the Southern
IP Pacific Pond Turtle.
Birds
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y Fifty-one species were recorded over the survey period. Open water on the reservoir provides habitat
for species such as Pied-billed Grebe (Podilymbus podiceps). Mallard (Anas platyrhynchos),
S Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Bufflehead (Bucephala albeola), and
Ruddy Duck (Oxura jamaicensis). An unusual sighting was of a single Common Merganser (Mergus
merganser) observed during one of the initial visits. Representing the rail family (Rallidae) were
Virginia Rail (Rallus limicola). Common Moorhen (Gallinula chloropus), and American Coot
(Fulica americana).
Freshwater Marsh along the reservoir's fringe provides cover and nesdng habitat for a variety of
species present. Mallard, Gadwall, Ruddy Duck, Common Moorhen and American Coot are species
that will use surrounding wedands or neighboring riparian areas for nesdng. Addidonally,
Freshwater Marsh sometimes provides nesting habitat for the Western Least Bittern (Ixobrychus
exilis hesperis). This species is listed under several categories of protecdon due to habitat reduction.
Because of its secredve nature, its biology remains pooriy known. A male Northern Harrier (Circus
cyaneus) was seen flying over the site. This raptor has incurred loss of local habitat, but may be
added to the Covered Species List if determined adequately conserved upon completion of the
MHCP.
Riparian habitat categories such as Southern Willow Scrub provide habitat for many common
species. Seen on-site were Cooper's Hawk (Accipiter cooperi). Loss of such habitat has prompted
the state to list this species as sensitive (CDFG 2001a) although recent Adas bird count findings
indicate this species is doing well in San Diego County. Common passerines recorded were Bushtit
(Psaltriparus minimus). House Wren (Troglodytes aedon). Ruby-crowned Kinglet (Regulus
calendula), Blue-gray Gnatcatcher (Polioptila caerulea), Hermit Thrush (Catharus guttatus).
Orange-crowned Warbler (Vermivora celata), Yellow-rumped Warbler (Dendroica coronata), and
Spotted Towhee (Pipilo maculatus). Both Tree Swallows (Tachycineta bicolor) and White-tailed
Kites (Elanus leucurus) were seen and showed behavior indicating potential nesting in the area.
The Least Bell's Vireo (Vireo bellii pusillus) is a sensitive migratory species (CDFG 2001a) that can
occur in Southern Willow Scrub habitat. This species was wintering in Latin America at the dme of
the current site investigations.
A pair of the federally threatened Coastal California Gnatcatcher (Polioptila californica californica)
was seen north of the reservoir near the dam on February 12. On February 21, probably the same
pair was seen directly northwest of the dam. An additional single male was seen nearby. Over the
last century, this species has lost most of its Coastal Sage Scrub habitat to development. Other
common species encountered within Coastal Sage Scrub and Chamise Chaparral were Anna's
Hummingbird (Calypte anna) Western Scrub Jay (Aphelocoma californica), Bewick's Wren
(Thryomanes bewickii), California Towhee (Pipilo californicus) White-crowned Sparrow
(Zonotrichia leucophrys), and Golden-crowned Sparrow (Zonotrichia atricapilla).
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Ml Mammals
m Relatively few mammalian species were observed on-site. This is in part due to the fact that most
y nadve mammal species are primarily nocturnal and not easily observed during daytime surveys. The
California Ground Squirrel (Spermophilus beecheyi) and Cottontail (Sylvilagus audubonii) were both
fm common on-site within Coastal Sage Scrub and Southern Mixed Chaparral communities. A stick
y nest presumably of the Dusky-footed Woodrat (Neotoma fuscipes) was observed on-site. Also
observed were the characteristic mounds of Botta's Pocket Gopher (Thomomys bottae) found
B throughout mosdy disturbed areas. Tracks of the Spotted Skunk (Spilogale gracilis) were found in a
mostly open and grass dominated area of the property. This uncommon species is typically found on
dry rocky or brushy hillsides (Bond 1977). Other expected rodent species include the San Diego
2 Pocket Mouse (Chaetodipus fallax fallax). Pacific Kangaroo Rat (Dipodomys agilis). Deer Mouse
(Peromyscus maniculatus), and Cactus Mouse (Peromyscus eremicus). These species form an
important prey base for mammalian carnivores, raptorial birds, and snakes. Residents of the area
m walk their dogs on-site and sign of Domestic Dog (Canis familiaris) was common. Coyote (Canis
11 latrans) is expected to occur on-site.
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Lake Calavera and the surrounding area provide abundant habitat for insects, arthropods, and
lepidopterans. This in turn provides a major food resource for bats (Order Chiroptera). Roosdng
resources for potentially resident and migratory species are offered by adjoining riparian woodland
and rock formadons on Mount Calavera. The reservoir itself concentrates prey for species that
forage over or near aquatic features. Since crepuscular and nocturnal obligates such as bats are
largely undetectable by methods used in this investigadon, the following species may potendally
occur on-site based on records within similar habitat: California Leaf-nosed Bat (Macrotis
californicus), Yuma Myotis (Myotis yumanensis), California Myotis (Myotis californicus). Western
Pipistrelle (Pipistrellus hesperus). Big Brown Bat (Eptesicus fuscus). Western Red Bat (Lasiurus
blossevillii). Hoary Bat (L. cinereus), Townsend's Big-eared Bat (Plecotus townsendii), Brazilian
Free-tailed Bat (Tadarida brasiliensis), and Western Mastiff Bat (Eumops perotis).
SENSITIVE BIOLOGICAL RESOURCES
Sensitive Habitats Identified On-site
Diegan Coastal Sage Scrub
Diegan Coastal Sage Scrub has been subject to large losses of habitat due to urban and agricultural
development in southern California. In San Diego County, this loss has been esdmated to be at least
72 percent, but has been higher in other areas of southern California. Its natural occurrence on
relatively flat terrain from the immediate coast to the inland valleys makes it susceptible to
development. Many of the species that utilize Coastal Sage Scrub have been listed as sensitive.
Many biologists consider Coastal Sage Scrub to be one of the most endangered habitat types in the
continental United States. The site's Coastal Sage Scrub is especially important given its reladvely
large size and connectivity with native habitats found on and off-site. In addition, much of this
habitat is suitable for the federally Threatened California Gnatcatcher which was observed on-site.
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flit Valley Needlegrass Grassland
W Native Grassland is also considered regionally .sensidve given its historic loss due to urban
y development and agriculture. This habitat is especially important given its reladvely large size and
connecdvity with other nadve habitats found on and off-site.
S Wetlands
I The wedand habitats delineated on-site including Southern Willow Scrub, Mule Fat Scrub, Southern
Coast Live Oak Riparian Forest, Coastal and Valley Freshwater Marsh, and Cis-montane Alkali
Marsh are considered sensidve due to their high wildlife value and naturally limited distribudon in
Southern California. Wedand habitats and other jurisdicdonal waterways have historically been
greatly reduced in area because of urban and agricultural development. Resource and regulatory
agencies including the U.S. Army Corps of Engineers and California Department of Fish and Game
enforce a no net loss policy of wedand habitats.
Wetlands Functions and Values
The well developed jurisdicdonal wedands and waterways on-site represent relatively high quality
habitats. The riparian vegetation, marshes, and open water habitats contribute to the site's high
biological functions and values. The riparian vegetation, particularly the Southern Willow Scrub,
supports several common riparian birds, such as Yellow-rumped Warbler, Song Sparrow, Lesser
Goldfinch, and Common Yellowthroat, and also may potentially provide suitable habitat for listed
endangered bird species such as the Least Bell's Vireo (Vireo bellii pusillus). Additionally, the
smaller ponding areas and abundance of leaf litter beneath the larger stands of willows are expected
to provide breeding habitat for various amphibian species including the Pacific Chorus Frog
(Pseudacris regilla) and Western Toad (Bufo boreas). The marsh and open water habitats also
contribute to the site's high wildlife diversity and abundance by suppordng numerous wildlife
species.
The on-site wetlands and waterways have reladvely high physical and chemical functions and values.
The dam and associated reservoir provides for functions such as groundwater recharge, sediment
retention, toxicant retendon, and nutrient transformation by slowing water velocities to Agua
Hedionda Creek. A high sediment/toxicant retention area is one that physically (or chemically) trap
and retain on a net annual basis the inorganic sediments and/or chemical substances transported
through the watershed which are generally toxic to aquatic life. Toxicants (e.g., grease, oil) are
trapped in sediments (i.e., fine particulates) which setde out in the lake. High nutrient transformation
areas are those which retain or transform inorganic P and/or N in to their organic forms or transform
(remove) N into it's gaseous form, on either a net annual basis or during the growing season. Low
water velocity and the presence of significant live woody or herbaceous vegetadon contribute to high
nutrient transformadon on-site. The herbaceous and woody vegetadon surrounding the reservoir also
contribute to slowing water velocities as well as provide for shoreline stabilization.
Wildlife Movement Corridors
Many species of wildlife move through the landscape during their daily and/or seasonal activities.
Many resident sedentary species move only short distances within their home ranges or territories.
Others, such as migratory birds, may move great distances during the year. Larger mammalian
predators often traverse extensive areas of the landscape over the course of their activities. Because
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ggl predation is a key process in maintaining biodiversity, it is important to maintain connecdvity
between large core areas of preserved habitat (Soule'and Terborgh 1999).
y Corridors are often defined as linear habitats that differ from the extensive surrounding landscape in
which they are embedded. But Soule'and Terborgh (1999) point out that this definition is vague and
2 has multiple meanings. Extensive data on the natural history, movement patterns, and dispersal
behavior of specific species is needed to define a corridor, and this type of data is unavailable for
most of the species in San Diego County. The key concept in regional conservation efforts is
8 landscape connectivity. Core areas need to be connected, and the more fragmented and isolated a
patch of habitat becomes, the less value it has for regional conservadon efforts. This concept of
connecdvity is an important component of the MHCP process.
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Wildlife corridors can be defined as linear landscape features that allow animal movement between
two patches of habitat. Corridors are typically thought of as facilitating concentrated wildlife
movement through areas where natural topography (e.g., cliffs or steep slopes, or by providing cover
from predators) or urbanization limit animal passage. Corridors may funcdon in different ways,
depending upon the time of year and the species being considered. Wildlife corridors can be
classified as short, local, or regional corridors. Short corridors typically serve the daily needs of
individuals, and can be referred to as travel routes. A short corridor may allow an animal to pass
through unsuitable habitat in order to access water, a den site, or a foraging area. Short corridors
undoubtedly exist for individual animals within the study area, but impacts to these travel routes
would not be considered significant unless all reasonable access to a critical resource (e.g., water
source) is being severed by project development.
A local corridor works on a slightly larger scale and generally allows movement between discrete
habitat patches. By connecting two or more habitat patches, local corridors allow the patches to
function as a larger block of habitat. Such connections may allow persistence of species or
populations, which could not be accommodated by any one of the component patches.
Regional corridors work over a much broader scale, and enable movement between very large tracts
of undeveloped land. Natural corridors (i.e., not formed by urban encroachment) typically are found
either along canyon bottomlands or ridgelines because these features often provide relatively
unobstructed and easier travel routes. For the same reason, dirt roads, trails, and firebreaks may also
be favored through dense vegetation. Preferred corridors also typically provide cover from predators,
which another reason why riparian areas are commonly used for wildlife movement.
Currently Lake Calavera retains some connectivity between Agua Hedionda Lagoon and Robertson
Ranch. El Camino Real, a heavily trafficked highway, separates the back lagoon riparian habitat
from Robertson Ranch. A continuation of College Boulevard is also being planned, and will
interrupt this corridor. Moreover, habitat north of the El Camino Real now consists of a palm
nursery and the agricultural lands of Robertson Ranch. This connecdon northward is therefore
tenuous at present, but does not preclude future enhancement, insofar as urban hardscape (other than
the road) is not in place.
The project site is located within the Local Facilides Management Zone (LFMZ) #7, as identified in
the draft Carlsbad Subarea Plan of the Multiple Habitat Conservation Plan (1999). This zone
includes Core Area # 3 (approximately 1,164 acres) which contains large areas of Coastal Sage Scrub
that support critical populations of Coastal California Gnatcatcher and Thread-leaved Brodiaea
(Brodiaea filifolia) (City of Carlsbad 1999). Core Area # 3 connects to several other Corps Areas
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including Core Area #2, Core Area #4 and Core Area #5. Downstream of the reservoir, Linkage
Area B connects Core Area # 3 to Core Area #4 (i.e., Agua Hedionda Lagoon and environs).
Specifically, the Plan notes that the portion of Linkage Area B between Core Areas 3 and 4 supports
grassland and coastal sage scrub communides that are surrounded by agricultural lands. The linkage
is approximately 3,000 feet long and is probably moderately effective for birds and mammals.
Sensitive Plants Identified Within Study/Survey Area
California Adolphia [Adolphia californica Wats.]
Lisdng: CNPS List 2
State/Fed. Status - None
Global Rank G3 State Rank S3.
R-E-D Code 1-3-1
RHAMNACEAE Dec-Apr.
Distribudon: Coastal San Diego County; Baja California, Mexico
Habitat: This short spiny shrub is often intermixed with Diegan Coastal Sage Scrub, but
occasionally occurs in peripheral chaparral habitats, particulariy hillsides near creeks.
The California Adolphia (somedmes called California Spinebush) is usually
associated with xeric locales where shrub canopy reaches four or five feet in height.
During late summer and fall it may be virtually leafless, and therefore not readily
apparent from a distance; however, its spiny stems are noted at close range. The San
Miguel and Friant soils are both quite amenable to California Adolphia. Possible
Associates: Ferocactus viridescens, Artemisia californica, Nasella lepida. Presence
of California Adolphia strongly correlates with presence of the federally threatened
California Gnatcatcher (Polioptila californica) so long as a suitable tract of sage
scrub is present to comprise a breeding territory.
Status: California Adolphia is substantially declining due to urban growth; sdll healthy
population's are extant. This spiny species is somedmes a dominant shrub on
hillsides, and such sites should be protected. Although Adolphia is not uncommon in
southwestern San Diego County, a decade of continued urbanization along the coast
could significandy reduce the populadons now extant. California Adolphia should be
considered for native revegetation projects in suitable habitat. This shrub was once
one of the dominant species of sage scrub on clay-laden soils in southern coastal San
Diego County. Its continued decline, and now ironic concerns about its "rarity",
underscore the extraordinary loss of sage scrub habitat in the region.
Project Site: Populations of California Adolphia were noted in Coastal Sage Scrub habitats
occurring north and south of the reservoir.
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Southwestern Spiny Rush [Juncus acutus L. ssp. leopoldii (Pari.) Snog.]
Lisdng: CNPS List 4
State/Fed. Status - None
Global Rank G5T5 State Rank S3.2
R-E-D Code 1-2-1
JUNCACEAE May-Jun.
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Lake Calavera May I, 2003
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Distribution: San Diego County, Los Angeles County, Santa Catalina Island, Santa Barbara
County, Ventura County, Orange County, and San Luis Obispo County; Baja
California, Mexico
Habitat: Coastal Salt Marsh at brackish locales, Alkaline Meadows, and Riparian Marshes are
all udlized by this rush. At mid-elevations this species may occur in limited numbers
along drainages with willow riparian vegetadon or sycamore woodland. On the
desert Spiny Rush may grow at palm oases. A variety of soil types are used including
Tujunga sand and Riverwash. Wherever water can pond along substantial seasonal
drainages, this ru.sh has potential habitat. It usually drops out of the flora at moderate
elevations. Possible Associates: Baccharis salicifoUa, Anemopsis californica,
Salicornia virginica.
Status: Southwestern Spiny Rush populations in San Diego County are now reladvely stable
despite several decades of losses associated with widespread regional reductions in
wetlands. This species can be readily grown in suitable habitat, and given its broad
current distribution, and spectrum of extant wetland populadon locadons, it should be
delisted. It is too common for rarity consideradon.
Project Site: Southwestern Spiny Rush populations were found within riparian habitats upstream
of the reservoir.
Western Dichondra [Dichondra occidentalis House]
Lisdng: CNPS List 4
State/Fed. Status ~ None
Global Rank G4? State Rank S3.2
R-E-D Code I-2-1
CONVOLVULACEAE Mar.-May
J
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Distribution: San Barbara County, Ventura County, Los Angeles County, Orange County, San
Diego County, Santa Catalina Island, Santa Cruz Island, San Miguel Island, Santa
Rosa Island; Marin County (que.sdonable); Baja California, Mexico.
Habitat: Southern Mixed Chaparral, Chamise Chaparral, Diegan Sage Scrub, rocky outcrops
in grasslands, and especially recently exposed areas of post-burn habitat are all
somedmes occupied by this small, crypdc perennial herb. It often grows almost
completely hidden at the base of leafy shrubs. Soil tolerances for Dichondra appear
variable with Loamy alluvial land of the Huerhuero complex utilized at Torrey Pines,
Hambright gravelly clay loam in the San Onofre Mountains, and a variety of other
types elsewhere. Possible Associates: Ceanothus verrucosus, Cneoridium dumosum,
Arctostaphylos glandulosa ssp. crassifolia.
Status: Western Dichondra is slowly declining in coastal southern California and is a
borderline species for inclusion on the CNPS list. Sites with very high densities are
noteworthy; in such circumstances substandal portions of these populadons should be
protected. Increasing rarity of this once well-distributed coastal species is strongly
correlated with urban expansion and loss of habitat.
Project Site: Western Dichondra was noted in the understory of Southern Mixed Chaparral habitat
occurring on a north-facing slope just east of the reservoir.
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Ashy Spike-moss [Selaginella cinerascens A. A. Eat.]
Lisdng: CNPS Unlisted
State/Fed. Status - None
Global Rank None State Rank None
R-E-D Code None
SELAGINELLACEAE March
Distribudon: San Diego County, Orange County; Baja California, Mexico
Habitat: Undisturbed chaparral and Diegan Sage Scrub are often utilized by this prostrate
perennial groundcover. It is a good indicator of site degradation as it rarely inhabits
disturbed soils. Many soil types are udlized with Redding cobbly loam apparendy an
optimal soil type near Miramar. Possible Associates: Ceanothus verrucosus,
Jepsonia parryi. Artemisia californica.
Status: Ashy-footed Spike-moss is substandally declining due to urban expansion along the
coast. Nevertheless, it still occurs at locations numbering in the thousands, and has
recently been de-listed by C.N.P.S. In terms of sheer numbers, this may be one of the
mo.st common plants in the County, it does not warrant sensidvity status.
Project Site: Ashy Spike-moss was noted in Non-native Grassland habitat north of the reservoir.
This cryptic species is typically associated with Coastal Sage Scrub habitat and may
present on-site but in numbers that would not be considered significant.
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Sensitive Wildlife Identified On-site
Cooper's Hawk (Accipiter cooperii)
Lisdng: CDFG (1992d) - Species of Special Concern
Distribudon: Throughout the United States
Habitat: Open woodlands and wood margins.
Status: Although this species is believed to have declined in some areas of California,
findings from bird adas projects suggest that it may actually be increasing in urban
settings where trees are planted as an integral part of development. Nevertheless, oak
woodlands remain critical as its preferred nesting habitat.
Project Site: One Cooper's Hawk flew over Diegan Coastal Sage Scrub on the north side of the
reservoir on February 21.
California Gnatcatcher (Polioptila californica californica)
Listing: USFWS - Threatened
CDFG - Species of Special Concern
MSCP - Covered Species
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Lake Calavera May I, 2003
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Distribution: Resident from southwestern California (formeriy Ventura; now Los Angeles County)
south into northwestern Baja California, Mexico.
Habitat: Primarily scrub lands dominated by California Sagebrush.
Status: This species has gready declined within its U.S. range due to conversion of habitat
into urban development. Largest populations occur in areas of moderately open sage
scrub bordering on grasslands (Atwood and Bontrager 2001).
Project Site: A pair was seen north of the reservoir near the dam on February 12. On February 21,
probably the same pair was seen northwest of the dam. An addidonal male was seen
approximately 130 feet to the south, below the dam.
Western Least Bittern (Ixobrychus exilis hesperis)
Listing: USFWS - Migratory Nongame Bird of Management Concern
CDFG - Species of Special Concern (nesdng)
MSCP - Covered Species
Distribution: Least Bitterns are common throughout the midwestern and eastern United States.
Western population occurs from southeastern Oregon through California and into
Mexico. In California, this species occurs in scattered populadons in Siskiyou and
Modoc counties, the Central Valley, southern coastal areas, Salton Sea, and along the
Colorado River.
Habitat: Marshes and reedbeds.
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Status: This species has gready declined within its U.S. range due primarily to habitat
destruction. Although considered resident in southern California, litde is known of
the nesting habits of this cryptic species.
Project Site: An individual of this species was flushed from the marsh fringing the lakeshore
during the January 23 visit.
Loggerhead Shrike (Lanius ludovicianus)
Listing:
Distribudon:
Habitat:
Status:
USFWS (1998) - Species of Concern
CDFG (1998) - Species of Special Concern
Occurs throughout the United States, south-central Canada and northern Mexico.
The northern populations are migratory.
Open country with scattered trees or other perch sites.
Apparently continuing to decline throughout its range due to loss of habitat or other
factors. Resident populations are probably augmented by an influx of wintering
individuals in the fall.
Merkel & A.^sociates, Inc. # 01-068-0! 23
Uike Calavera Mayf 2003
m Project Site: Two shrikes were seen in sparse Diegan Coastal Sage Scrub north of the reservoir on
February 21. The two may represent a mated pair as adequate nesting habitat exists
^ on-site.
Southern California Rufous-crowned Sparrow (Aimophila ruficeps canescens)
Listing: USFWS (1998) - Species of Concern
CDFG (1998) - Species of Special Concern
Distribution: Coastal southern California from Santa Barbara County south into Baja California,
Mexico.
Habitat: Sparse, low scrub, often mixed with grasses on rocky slopes. California Sagebrush
(Artemisia californica) is often present in scrub inhabited by this sparrow.
Status: Uncommon to fairiy common but localized resident. Incurring habitat loss in some
areas from urban development
Project Site: Several individuals were seen or heard on all visits. Adequate nesdng habitat exists
on-site.
White-tailed Kite (Elanus leucurus)
Lisdng: CDFG (1998) - Fully Protected
Distribudon: The White-tailed Kite is primarily found along coastal California and in the Central
Valley, with extensions northward into Oregon and south into northern Baja
California, Mexico. It also occurs in mainland Mexico and extends northward into
the United States, particulariy along the southeast pordons of Texas (i.e.. Gulf coast).
Habitat: Typical habitats for White-tailed Kites are grasslands, agricultural fields, shrublands
mixed with a substandal grass component, low-lying and/or seasonal marshes.
Particulariy favored are areas where these habitats are closely bordered by clumps or
windrows of tall trees.
Status: Primary habitats in southern California are the coastal valleys and plains of San
Diego, Orange, and western Riverside counties. These areas are currently undergoing
large-scale and rapid habitat conversion to residential development. Historic
population fluctuadons have made their status difficult to determine.
Project Site: Two kites were seen in Southern Willow Scrub northeast of the reservoir on February
21 and March 5. The two may represent a mated pair as adequate nesting habitat
exists on-site.
Northern Harrier (Circus cyaneus)
Lisdng: CDFG (1998) - Species of Special Concern
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Lake Calavera May I, 2003
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Distribution: Widespread across North America, but a very localized breeder.
Habitat: Coastal Salt Marsh, Freshwater Marsh, grasslands, open sage scrub, and agricultural
fields.
Status: As with the White-tailed Kite, the large-scale conversion of open areas to residential
development has eliminated breeding habitat and contributes to an uncertain future
for this species.
Project Site: A male harrier flew over the site on March 5. Adequate nesdng habitat may exist in
the vicinity but off -site in grasslands to the south.
SENSITIVE SPECIES POTENTIALLY OCCURRING ON-SITE
Several species are known to occur from the area; several of which may occur on-site but were not
detected. Appendix 5 lists these species (as well as sensidve species present) and provides
information regarding their preferred habitat, sensitivity status, Subarea Plan coverage, and
probability of occurrence.
DISCUSSION
EXPECTED BIOLOGICAL RESOURCE IMPACTS
As part of this biological study, an analysis of potential impacts to biological resources associated
with the proposed project is provided. For the purposes of this report, the proposed project includes
remedial improvements which cover:
• Construcdng the new inlet/oudet facility to replace the exisdng inoperable oudet tower.
• Repairing features of the existing spillway apron and channel to improve flow characterisdcs,
access, and safety of the spillway and channel
• Upgrading the existing access road via the existing spillway apron for improved access by
maintenance vehicles and crews.
• Improved security with localized fencing and gadng as needed to protect facility operations and
maintenance activities.
Construction work associated with each of these improvements is discussed in the Conceptual
Planning and Preliminary Design Report (CGvL 2001). Figure 4 depicts the project overiayed on the
biological resources map. A majority of the project impacts to biological resources are related to
indirect effects associated with remedial work for the oudet tower. Impacts from this work are
discussed in detail below. Impacts stemming from improvement work to the spillway, exisdng
access roads, and fencing are also discussed.
Outlet Tower
At present, the inoperable valves of the oudet works prevent the operadons and maintenance stafi' of
the Carisbad Municipal Water District to control flows through the Lake Calavera dam. Remedial
Merkel &. As.sociates, Inc. 01-068-01 25
Lake Calavera May /, 200i
^ works are proposed for the outlet tower which is located within the open water of the reservoir near
the dam. The proposed project will involve replacing the existing outlet tower with a new I/O
m facility. This would require lowering the water level in the reservoir from the approximate current
y elevation of 208 feet amsl (which was arbitrarily set as result of the valve failure) to the low
operating elevadon of 189 feet amsl for a construction period of approximately 6 months. During
S this period the water level would be greater then 10 feet below the exisdng wedand habitats. It
should also be noted that it would take additional time for the reservoir to refill back to its operating
condidons. This period is dependant upon what time of year the refilling occurs. An esdmated
i potential Project Biological Impact Zone (PBIZ) is provided in Figure 3 of this report. This
boundary exhibits the limits of the vegetadon and sensitive species that are expected to be impacted
by a fluctuation in reservoir level due to the proposed project. During the construction period
(approximately 3.20 acres of open water ranging from one to ten feet in depth would remain below an
elevadon of i 89 feet. This would provide a small reservoir extending from the exisdng dam east for
a distance of approximately 750 feet. This reservoir may provide some value for wildlife, principally
I aquadc species; however, use by waterfowl, wading birds, or shorebirds is expected to be minimal
given the amount of acdvity associated with construcdon and the lack of condguous vegetative
cover. In addition, with a reduced surface area and volume, the smaller reservoir would be more
•
susceptible to high fluctuations and some significant periods of depressed dissolved oxygen levels as
well as elevated summer temperatures. While the capacity of a reduced reservoir to support the full
abundance and suite of organisms present in the existing reservoir is uncertain, it is andcipated that a
representative aquatic community would be maintained. Temporary measures such as aeration
I and/or water circulation could be used to enhance the survival of a greater propordon of the total
* community.
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i /
• ACJ!> W A C C ES S "RO \
/
E NOTE 2
S PI CLW^Y^ftj tj>,"cl.4 S S ROAD
HYDRAULIC AIR AND'CTNE
J
\ ... •tfp PIPfett
\. \ AN D coivj:et:^^>-^;^// / /
:r^GOWJROL,du{LQIN^\// I \ \
RPILLVV^YC^AIMNEI:) //;// / / f f (/(/ \ \ '
, .... J , /,
I \ I \ •——/ / ^ I I \\\
li i \ // 30'RADHiLJS MAINttNA
-/ // 30'RA,DHiLJs MAiNtf NANCE
//- , VEHfCLJc TURN AROUND
SITE PLAN
SCALE: r-20'-0'
18022 Coman. S.lu lOCM
lr>4n«, CoUWmki i2«14
ptunc tM/eeci asoo
Fete 949/4-»0-BlM
WPHpVEMBNT PLANS FOR LAKE CALAVERA REMEDIAIJMEROVeMENK
•ggjyjiTsiTE PLAN 1 3
4- THICK GUNITE
220
4' THICK GUNITE _ ig' CONq i
LOOKING NORTH
SECTION (STA 0+00)
NO SCALE
230 230
220 220
210 210
200 200
4" THICK GUNITE
LOOKING NORTH
SECTION (STA 0+50)
230 230
220 220
SECTION (STA 1+00)
NO SCALE
230 230
220 220
210 210
200 200
-EXISTING GRADE ? i^^AY
LOOKING NORTH
SECTION (STA 1+50)
230
220
210
200
2y.
22i:
2-Kl
230
220
210
200
220
210
200
CONC.
SPILLWAY
I
yr-EXismG GRADEj
4* THICK GIINITE 210
200
220
200
220
200
LOOKING NORTH
SECTION (STA 2+00)
NO SCALE
LOOKING NORTH
SECTION (STA 2+50)
NO SCALE
190
LOOKING NORTH
SECTION (STA 3+00)
NO SCALE
18022 Com, Sui4» 1O0A
IrvIrM, CoHorxio irjilt
Phone au/UO-H-CO
fac 949/44O-8II1:
LOOKING NORTH
SECTION (STA 3+50)
NO SCALE
200 200
LOOKING NORTH
SECTION (STA 4+00)
NO SCALE
210
200
190
UTILITY DISTRICT APPROVAL(S)
DISCIPUNE
OWG NO
C6
CARLSBAD MUNICIPAL WATER DISTRICT
WUJAU E. PLUUUER DATE DISTRICT ENCSNEER R.CE. 28176
CITY OF CARLSBAD FIRE DEPARTMENT
REOUIf?EUENTS
NO. OF F.H.(S) F.aOW G.P.M. OUT OF F.H.(S).
BIOG. SPRINKLED YES/NO. . . F.FLOW G.P.U.
HRE MARSHAL DATE
SHEET
10
"AS BUILT"
DATE
REVIEWED BY:
CITY OF CARLSBAD
ENGINEERING DEPARTMENT
SHEETS
39
MPROVEUENT PLANS TOR-LAKE CALAVERA REMEDIAL IMPROVEMENTS
CONCRETE SPILLWAY SECTIONS
LI
10
m
CONTROL BUILDING
MITS OF CONSTR
CHANNEL
NOTE 3
Ca
1^'
Pc
Ca
Ca
C^
100 0 100 200 Feet
Merkel i Associates, Incl
01-068-01
N Figure 4
Lake Calavera
HABITAT TYPES
Cis-montane Alkali Marsh
Coyote Bush Scrub
Diegan Coastal Sage Scrub
Disturbed Land
Diegan Coastal Sage Scrub - Revegetation
Non-native Vegetation (Exotic)
Coastal and Valley Freshwater Marsh
Southern Mixed Chaparral
Mule Fat Scrub
Non-native Grassland
Coast Live Oak Riparian Forest
Open Water
Coastal Sage-Chaparral Scrub
Southern Willow Scrub
I Urban/Developed
I Valley Needlegrass Grassland
SENSITIVE SPECIES
• Ca = California Adolphia
• Ja = Southwestern Spiny Rush
• Sc = Ashy Spike Moss
• Do = Western Dichondera
• Pc = Coastal California Gnatcatcher
• LI = Loggerhead Shrike
• El = White-tailed Kite
• Ar = Rufous-crowned Sparrow
Non-wetland Waters of the U.S.
CONSTRUCTION LIMITS
Lake Calavera May I, 2003
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Wetland Impacts
Wetland vegetation occurring along the periphery of the reservoir including Freshwater Marsh, Cis-
montane Alkali Marsh, Southern Willow Scrub, and Mule Fat Scrub is dependent upon the high soil
moisture provided by the reservoir. A partial drawdown of the reservoir is expected to change this
moisture regime and as a result negatively effect the reservoir's associated wetland habitats.
Relatively steep slopes occur on the north, south and western edges of the reservoir. These mostly
2:1 slopes are mapped as a fme loamy fine sand (Las Flores loamy fine sand) that are not expected to
slump if water levels are retracted. Soils in the eastern portion of the reservoir are fine organically
enriched silts deposited in an aqueous environment. While the slopes in this area are more gradual,
they are more prone to slumping if rapidly dewatered, and consolidation if dewatered at any rate.
The effects of slumping or consolidation would be expected to be a minor but presently
unquantifiable reduction in the total area of the reservoir that is maintained at depths suitable to
support freshwater marsh. Dewatering of anoxic organically enriched sediments would also be
expected to reduce sediment pH and potentially result in acidification of remaining reservoir water as
sediment drainage occurs. Acidification, in an extreme case, may result in an increased mortality of
aquatic life and in a mild case, may result in no or minor changes in vegetation growth and benthic
communities. Under a partial drawdown scenario, careful management of pH within the remaining
reservoir may effectively be used to combat the adverse effects of acidification on the aquatic
organisms.
Wetland vegetation depicted outside the PBIZ boundary is believed to be dependant upon water
provided by surface and subsurface flows originating from storm drains or other urban runoff sources
that are tributaries to the reservoir. Table 2 provides acreage of existing habitat occurring within the
study area as well as acreage of habitat occurring within the PBIZ.
Table 2. Vegetation Acreages
Habitat Types Acreage Within
Study Area
Acreage Within PBIZ
Disturbed Land 10.86 0.0
Urban/Developed 0.24 0.0
Non-native Vegetation (Exotic) 2.03 0.0
Diegan Coastal Sage Scrub 26.72 0.0
Diegan Coastal Sage Scrub - Revegetation 0.80 0.0
Coastal Sage-Chaparral Scrub 0.47 0.0
Southern Mixed Chaparral 2.89 0.0
Non-native Grassland 21.31 0.0
Valley Needlegrass Grassland 3.29 0.0
Coyote Brush Scrub 2.23 0.0
Southern Coast Live Oak Riparian Forest 1.97 0.65
Cis-montane Alkali Marsh 0.50 0.17
Southern Willow Scrub 14.80 3.66
Coastal and Valley Freshwater Marsh 8.51 8.34
Mule Fat Scrub 2.11 1.63
Open Water (Non-wetland Waters of the U.S.) 12.90 12.77
Non-wetland Waters of the U.S. (Drainages) 0.26 0.0
Total 27.22
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The following discusses each of the wedand habitat types which occurs within the PBIZ boundary
and the potential effect that the proposed drawdown may have on these resources. All adverse
impacts to wetland habitats would be considered significant and would require mitigation. These
habitat types are of high wildlife value and have been significantly reduced in recent years.
Coastal and Valley Freshwater Marsh
It is anticipated that much of the above ground stems of these plants would perish, a natural winter
seasonal event for cattails; however, the roots (i.e., rhizomes) would likely survive and regenerate
following return of normal inundation conditions. The loss of surface stems would significantly
impact the wildlife that ufilize this habitat. Sensitive species expected to be affected by this loss
include the Western Least Bittern and the Southwestern Pond Turtle.
Southern Willow Scrub
A water reduction would likely negatively affect the various willow trees that occupy this habitat. At
a minimum level of impact, these trees would become stressed, and as a result defoliate or exhibit
some reduction in growth or branchlet loss. Younger willow trees, which have root systems that are
relatively less extensive, would be most effected. The herbaceous understory of this vegetation type
may be reduced. Impacts to this habitat may have a significant negative affect on sensitive species
associated with these willows such as White-tailed Kite.
Mule Fat Scrub
Mule Fat is relatively more tolerant of water deprivation than many wetland associated plant species.
This shrub would likely show some minor levels of stress (i.e., leaf loss, stem loss), however most
shrubs are not expected to perish given the proposed drawdown extent and duration.
Cis-montane Alkali Marsh
II Cis-montane Alkali Marsh habitat is limited to a very small area within the PBIZ boundary. As
• mentioned in this report, this habitat is dominated by Saltgrass, a species that is often associated with
alkaline conditions created from periodic inundation. This species is tolerant of water deprivation
E and is not expected to be significantly impacted by the proposed drawdown. Other species
associated with this habitat including Annual Beardgrass and Curly Dock are non-native species and
their loss would not be considered significant.
^ Coast Live Oak Riparian Forest
B The several Coast Live Oaks that occur adjacent to the reservoir are not expected to be affected by
the proposed drawdown. These trees are typically within upland habitats well above the existing
water level. Although they may partially rely on some soil moisture provided by the reservoir, it is
|W highly unlikely that these trees would exhibit any negative effects associated with the proposed
jy drawdown.
^ Additional Wetland Impacts
Wetland impacts are anticipated to result mostly from the drawdown of reservoir water levels;
^ however work is also associated with proposed construction related to the dam, the spillway channel,
_ Merkel & Associates, Inc. # 01-068-0! 29
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Lake Calavera May I, 2003
^ and the existing outlet box. As a result, these impacts would fall within the jurisdiction of the City of
Carlsbad under its CEQA responsibilities, the California Department of Fish & Game under the
I California Fish & Game Code section 16(X) et seq. and the U.S. Army Corps of Engineers under
section 404 of the Clean Water Act (from work associated with the dam, spillway, and outlet box).
Except for spillway channel improvements, the impacts to wetlands are not anticipated to result in
S permanent losses, but rather a temporary decline in the functionality of the wetlands and potentially a
prolonged degradation if the decline of the wetland vigor makes the areas more susceptible to
invasion by exotic plant .species. Mitigation for these types of wetland impacts is best achieved by
E enhancement or wetland restoration instead of new wetland creation. Enhancement would generally
include such acts as removal of exotic species from wetlands in the vicinity of the reservoir and
specifically within wetlands that are impacted by the reservoir drawdown or which occur upstream of
g the reservoir's wetlands and which may provide a source for invasion of the effected wetlands.
Although there is a great amount of uncertainty of what the actual long term effects will be on the
I wetland vegetation occurring on-site, it could be anticipated that there will be at least a temporal loss
of habitat value, given die back of vegetation. In a worst case scenario, some permanent loss of
habitat would occur as a result of soil slumping and loss of wetlands along the lakeward margin,
(although as mentioned above, this is not expected. Suggested mitigation measures are provided in
the Recommendations section of this report that would reduce the possibility of long term effects on
the vegetation. Although these measures do not guarantee against a permanent loss of wetland
I habitat, a monitoring program conditioned with remedial actions and sufficient mitigation measures
to account for potential loss would be recommended.
Upland Impacts
* A drawdown of the reservoir is not expected to have any significant impacts to upland vegetation
surrounding the reservoir. Impacts to upland habitats stem from the construction of a I/O control
H building, spillway channel improvements, construction staging, and access to the existing outlet box
which are discussed below and quanfified in Table 3.
p Wildlife Impacts
As previously mentioned, significant impacts is likely to occur to sensitive species that utilize the
E wetland habitats. A temporary degradation of habitat including defoliation or complete loss of
riparian vegetation may affect the numerous species which utilize these habitats for breeding, feeding
and escape cover from predators. Sensitive species that may be affected by loss of habitat include
E While-tailed Kite, Cooper's Hawk, Western Least Bittern, and Southwestern Pond Turtles. The
temporary loss of open water would result in impacts to various migratory and resident waterfowl
species including Eared Grebe, Ruddy Duck, Mallard, Northern Shoveler, Gadwall, Western Grebe, a and American Coot. Of particular concern relative to species impacts is the drawdown of water from
marshes during the period when waterfowl nests are active. This would expose nests to greater risk
of predation and loss of foraging areas. Impacts could result in a violation of the Migratory Bird
m Treaty Act. This act precludes the taking of nests or eggs of migratory game or insectivourous or
y nongame birds. The normal fluctuations of actively used storage reservoirs in southern California
differ from the current project circumstances in a few ways. First, most of the fluctuations are part of
fm an on-going active reservoir management and the fluctuation is predictable. Second, vegetation is
y poorly developed in reservoirs that fluctuate significandy on a seasonally basis. As a result of both
of these factors, breeding bird use of fringing vegetation is often not very high in actively operated
in storage reservoirs. From more of a regulatory and environmental assessment standpoint, the ongoing
Merkel & Associates, Inc. # 01-068-01 30
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g| operation of an active storage reservoir is not generally considered to be a "project" and as such, is
not typically subject to new environmental review as would be the case for the current project, or a
HI substantive change in the operational environment for an existing storage reservoir.
As previously mentioned, significant impacts may occur to sensitive species that utilize the wedand
«• habitats. Impacts to these species may occur through either a temporary or potentially permanent
^ loss of habitat associated with the project. A temporary degradation of habitat including defoliation
or complete loss of riparian vegetation may affect the numerous species which utilize these habitats
m for breeding, feeding and escape cover from predators. Sensitive bird species that may be affected
M by loss of habitat include White-tailed Kite, Cooper's Hawk, and Western Least Bittern. The
temporary loss of open water would result in impacts to various migratory and resident waterfowl
1 species including Eared Grebe, Ruddy Duck, Mallard, Northern Shoveler, Gadwall, Western Grebe,
and American Coot. It should be noted that a loss of open water during the breeding season for these
latter species (February through June), may result in a violation of the Migratory Bird Treaty Act.
This act precludes the taking of nests or eggs of migratory game or insectivourous or nongame birds.
In addition, the reduction of open water habitat may also impact the Southwestern Pond Turtle, a
state and federal Species of Special Concern which has been confirmed as present at the site,
following recent focused surveys. Various mammal species, which are expected to utilize the
reservoir fringe for foraging habitat, may also be affected by a reducfion in open water. These
species include common animals such as Mule Deer, Coyote, Raccoon, and Virginia Opossum.
The riparian habitats including Freshwater Marsh and Southern Willow Scrub that surround the
reservoir provide escape cover for various waterfowl species. The smaller pond that would be
formed as a result of drawdown would lack cover vegetation, thus making animals attempting to
access the water more susceptible to predation. A smaller pond that is subject to hot weather may
also have a significant affect on wildlife, especially birds. While occurrences are generally rare,
ducks are sometimes poisoned by botulism by eating infected invertebrates (i.e., snails) found in mud
E as wetland vegetation is exposed and decays. When infected birds die, botulism toxin concentrates in
maggots that feed off the carcasses. This problem increases as more birds are infected and die from
eating the maggots.
S No direct biological significance is attributed to the loss of the various non-native fish occurring in
the reservoir. However, a reduction in the availability of forage fish may have a short-term impact
^ on the wading bird populations. A reduction in predatory fish such as bass and sunfish may increase
U the availability of forage fish and amphibians and promote the abundance of wading and diving fish
eating birds. A general reduction in forage fish may be the result of drawing water away from
p surrounding cover vegetation where prey species are concentrated around predators.
A drawdown of the reservoir is not expected to impede wildlife movement since the reservoir itself
PI provides a barrier to movement. As mentioned earlier, defoliation of vegetation within the PBIZ is
y expected to occur. Although this would temporarily reduce cover for wildlife, most species would be
expected to continue to utilize adjacent habitats to circumvent the reservoir and move down or
w upstream of the site.
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Impacts to Diegan Coastal Sage Scrub arising from the construction of the I/O control building and
S spillway channel repairs would result in the loss of habitat for the Coastal California Gnatcatcher
which was observed in the vicinity of this location. This impact would be considered significant but
may be mitigated through the City of Carisbad's 4d process which allows for a interim 5 percent
fm local take of habitat prior to finalizalion of a habitat management plan.
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Other Project Impacts
2 Direct impact acreages were calculated using construction limits identified on Figure 4. These
project impacts identified in Table 4 include construction activities associated with the following:
^ Spillway Apron and Channel Improvements
p The following information is provided to better define the entire spillway structure.
concrete apron 150 x 40 ft (6,000 sf)
J gunite basin 250 x 50 ft (12,500 sO
unlined open channel 250 x 35 ft (7,500 sf)
The concrete cutoff anchor is between the basin and the channel and is approximately 50
feet downstream south of the dam axis. The entire spillway structure extends about 500
feet in the north/south direction.
Proposed work includes clearing and grubbing the exisdng spillway channel which will then be
overiayed with gunite. Impacts are expected to occur to sensitive habitats including Diegan Coastal
Sage Scrub, Southern Willow Scrub and Mule Fat Scrub (Table 3).
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Access Road
The proposed project includes improvements to exisdng access roads resulting in impacts to
Disturbed Lands and Urban/Developed (Table 3).
Improved Site and facility security (fencing and gates)
Security fencing has been proposed along existing and proposed access road improvements as well as
the area surrounding the proposed I/O control building. Impacts from fencing have been included
with access road improvements and the I/O control building (Table 3).
Other
This category includes all other development including work to be conducted on the dam face, repair
of the existing outlet box, and construction staging. Although construction limits include open water
(Figure 4), no direct impacts are expected since a barge will be used in lieu of fill dirt for
construction purposes.
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Lake Calavera May I, 2003
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Table 3. Direct Impacts (Acreage) to Biological Resources
Habitat Type I/O
Control
Building
Spillway Apron
and Channel
Improvements
Access Road Other Total
Southern Willow
Scrub
0.002 0.002 0.004
Mule Fat Scrub 0.06 0.06
Coastal and Valley
Freshwater Marsh
0.23 0.23
Non-wetland Waters
of the U.S.
Diegan Coastal Sage
Scrub
0.09 0.52 0.17 0.78
Diegan Coastal Sage
Scrub-Revegetation
Disturbed Land 0.15 0.56 0.02 1.36 2.09
Urban/De vel oped 0.01 0.21 0.22
Of the above habitat types, impacts to Southern Willow Scrub, Mule Fat Scrub, Coastal and Valley
Freshwater Marsh and Non-wetland Waters would be under the jurisdiction of the U.S. Army Corps
of Engineers pursuant to Section 404 of the Clean Water Act and Section 1600 et. sec. of the
California Department of Fish and Game Code. Table 4 exhibits total impact acreage and
recommended mitigation ratios for these jurisdictional resources.
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Table 4. Direct Impacts to Biological Resources
Habitat Type Impact Acreage Mitigation Ratio Total Mitigation
Acreage Required
Southern Willow Scrub 0.004 3:1 0.01
Mule Fat Scrub 0.06 2:1 0.12
Coastal and Valley
Freshwater Marsh
0.23 2:1 0.46
Non-wetland Waters of
the U.S.
0.06 1:1 0.06
Total 0.65
RECOMMENDATIONS TO AVOID, REDUCE OR MITIGATE IMPACTS
Additional Focused Surveys
Additional surveys would be required to determine the potential presence of several sensitive species
which may be affected by the proposed project. Focused surveys are recommended for Least Bell's
Vireo and Southwestern Pond Turtle to address potential water drawdown impacts. Surveys for
Merkel & A.isociates, Inc. 01-068-0! 33
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Lake Calavera May I, 2003
California Gnatcatcher are recommended for project impacts to Coastal Sage Scrub. The following
provides guidelines and/or approved protocol for conducting these surveys.
Least Beirs Vireo
Southern Willow Scrub habitat occurring on-site may potentially host breeding of the federally
endangered Least Bell's Vireo (Vireo bellii pusillus) and therefore focused protocol survey for this
species are recommended.
Least Bell's Vireo Survey. A focused presence/absence survey for the Least Bell's Vireo should be
conducted in accordance with U.S. Fish and Wildlife Service (USFWS) protocol for the
approximately 14.80 acres of Southern Willow Scrub habitat occurring within the study area. The
protocol requires a minimum of 8 surveys at 10-day intervals between April lO^*" and July 31"' to
establish the presence or absence of Least Bell's Vireos. Surveys require a lO-day Notification letter
for the Service prior to the fieldwork, as well as a 45-day Survey Report.
Coastal California Gnatcatcher
The presence of at least one pair of the federally threatened Coastal California Gnatcatcher
(Polioptila californica californica) on-site indicates high quality habitat for the species. Additional
protocol surveys would be required to determine the presence or absence of additional Gnatcatchers
within the study area.
Coastal California Gnatcatcher Survey. A focused presence/absence survey for the Coastal
California Gnatcatcher should be conducted in accordance with USFWS protocol for the areas
directly affected by project construction (e.g., spillway channel, control building). The protocol
requires three visits at weekly intervals to establish presence or absence of the bird. In order to
conduct this survey within the Service's preferred study period, the fieldwork should be completed
no later than August 30th. Surveys require a 10-day notification letter sent to USFWS prior to the
fieldwork, as well as a 45-day post-survey report.
Southwestern Pond Turtle
Aquatic habitat on-site is suited for the Southwestern Pond Turtle (Clemmys marmorata pallida), a
California Species of Special Concern. Because no specific survey protocol exists, it is
recommended that the California Department of Fish and Game be consulted to determine adequate
survey requirements prior to the work being conducted.
General Recommendations
The following additional general recommendations are provided. These recommendations are
subject to change following the outcome of the above recommended surveys.
1) Project Timing:
As mentioned previously, the duration of the proposed work is expected to be approximately
9 months not including refilling of the reservoir to its current conditions. It is recommended
Merkel & As.sociate.s, Inc. 0 01-068-0! 34
•* Lake Calavera May I, 2003
wd that reservoir be drawn down at such a period that would avoid directly impacting species
which require open water/marsh conditions for breeding. A total of 45 days is required to
w drain the reservoir. As mentioned previously, a drawdown of the reservoir during the
H breeding period for those species (i.e., waterfowl) requiring open water for breeding may be a
violation of the Migratory Bird Treaty Act.. To avoid this period (February through June),
I the draining should either begin in mid December or after June 30.
If work is to commence in mid-August/early September as proposed (CGvL 2001) then the
I lake would be drained by the end of October. Although construction is expected to occur for
a period of nine months, work conducted in the reservoir will only require 6 months and
refilling of the reservoir can conceivably commence in April. It is anticipated that it would
I take a minimum of one wet season (December through April) to refill the reservoir (CGvL
2001). Since relatively little water enters the reservoir during the summer of average rainfall
years (CGvL 2001), it is expected that the reservoir would not be refilled to its original
capacity for a period of at least 11 months or until the end of the following wet season. I
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A more biologically preferred construction scenario would be to commence drawdown at the
beginning of July which would allow for refilling of the reservoir to begin in January. In this
scenario, the reservoir could be mostly refilled to its original capacity in a minimum period of
4 months, and thus result in less stress on the affected wetland habitats.
2) Biological Monitoring:
A comprehensive biological monitoring and reporting program should be developed and
implemented to document specific changes of wetland habitats associated with drawdown of
the reservoir. Monitoring should be both quantitative and qualitative and should include an
analysis of vegetative cover (i.e., plant dieback/defoliation), plant mortality, wildlife use, as
well as soil moisture and soil pH. Monitoring should occur prior, during and following
construcdon. The plan should include remedial actions for documented significant impacts
(i.e., permanent loss of habitat) not expected. These measures may include creation and/or
purchase of wetland habitat or additional restoration measures.
Unknown temporary impacts would be quantified at the completion of the reservoir
drawdown and at the completion of the reservoir refilling. The sum of these impacts would
be quantified and mitigated at a 1:1 mitigation ratio.
Merkel & Associates. Inc. # 01-068-01 35
Lake Calavera May I, 2003
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The following table would be completed following these stages of development.
Table 5. Temporary Impacts to Biological Resources
Sensitive
Vegetation
Communities
within PBIZ
Potential
Impact
Subarea ^
Acreage
within PBIZ
Potential
Impact
Subarea *
Impact
Survey #1:
Temporary
Impacts
Identified at
Completion
of Water
Drawdown
Impact
Survey #2:
Temporary
Impacts
Identified at
Completion
of Water
Renihng
Mitigation
Ratio
Total
Required
Mitigation
Acreage
Southern
Willow Scrub 3.66 1:1
Coastal and
Valley
Freshwater
Marsh
8.34 1:1
Mule Fat
Scrub 1.63 1:1
Cis-montane
Alkali Marsh 0.17 1:1
Total
^PBIZ Potential Impact Subarea = the area located between the Open Water (e
and the PBIZ.
evation 201 ft.)
3) Habitat Survival Maintenance:
It is recommended that water be directly pumped from the reduced reservoir into an above
ground irrigation system that would provide overhead spray to affected habitats. Such a
measure would likely reduce the possibility of a potential permanent loss of habitat and
possibly reduce dieback/defoliation. At a minimum, the irrigation system could be designed
to provide water for Southern Willow Scrub habitat since other vegetation types are not
expected to be permanently affected (see above). Water can be obtained from the lowered
reservoir or it may be possible that potable water could be acquired from adjacent residential
development.
Flooding wetland areas prior to construction may also avoid and/or minimize potential
impacts to wedand habitats due to drawdown. This could occur by allowing the reservoir to
reach its maximum water capacity for a duration that would charge groundwater but would
not affect (i.e., type change) wetland resources. Flooding for a period of one month prior to
drawdown would likely be sufficient for this purpose.
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Lake Calavera May I, 2003
Ml 4) Habitat Restoration:
m To mitigate for the potential temporary loss of 13.63 acres of wetland habitats resulting from
^ dieback/defoliation, it is recommended that habitat enhancement be implemented at a 1:1
ratio. This work should occur throughout the same watershed. A plan should be developed
m that identifies locaUon of enhancement areas, specific work to be conducted, and monitoring
^ and reporting requirements. Habitat restoration should include weed abatement, planting of
appropriate native species, and litter removal.
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5) I/O Control Building/Access Road/Spillway/Fencing Improvements/Other
It is recommended that final design plans including the development for the I/O Control
Building, Access Roads, Spillway Channel Improvements, and Fencing Improvements avoid
impacts to sensitive habitats (e.g., Diegan Coastal Sage Scrub, Wedands) wherever possible.
In addition, Orange construction fencing should be installed along the boundary between
proposed construction and sensitive habitats to avoid inadvertent impacts to native habitats.
The loss of wetlands/streambed associated with spillway improvements could be included
with habitat restoration discussed above. It may be possible that unavoidable impacts to
Coastal Sage Scrub may be mitigated through the City of Carlsbad's 4d process. A
biological monitor should be employed to ensure that the project remains within the proposed
construction limits. Any unexpected additional habitat impacts shall be determined at the
conclusion of the project and shall be mitigated as per the mitigafion ratios identified in
Tables 3 and 4. Any additional impacts to Coastal Sage Scrub will also be mitigated
appropriately per City guidelines.
OTHER LOCAL, STATE, AND FEDERAL REGULATORY PROGRAMS
Under section 404 of the Clean Water Act, placement of dredged or fill material within waters of the
U.S. requires a permit issued by the U.S. Army Corps of Engineers. Repair work or any
improvements to the existing dam would require a 404 permit from the Corps. In addition,
improvements which would impact the spillway drainage channel and any work that directly impacts
wetland habitats would also require a 404 permit from the Corps. The Clean Water Act also requires
the issuance of a state water quality certification or waiver under Section 401 to be issued by the
Regional Water Quality Control Board for any action that may result in degradation of the waters of
the State. In addition to the federal act requirements, the proposed work (including draining of the
lake) would constitute an alteration of a streambed/lake and would fall under the jurisdiction of the
California Department of Fish and Game pursuant to section 1600 et seq. of the California Fish and
Game Code.
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LITERATURE CITED
American Ornithologists' Union. 1989. Check-list of North American Birds, seventh ed. American
Ornithologists' Union. Washington, D. C.
Army Corps of Engineers. 1987. Wetland Delineation Manual: Appendix C, Section I; Region O -
California. Technical Report Y-87-1. U.S. Army Engineers Waterways Experiment Station,
Vicksburg, Mississippi.
Atwood, J.L., and D.R. Bontrager. 2001. California Gnatcatcher (Polioptila californica). In The Birds
of North America, No. 574 (A. Poole and F. Gill, eds.). The Birds of North America, Inc.,
Philadelphia, Pennsylvania.
Bond, Suzanne I. 1977. An annotated list of the Mammals of San Diego County, California.
Transactions of the San Diego Society of Natural History, Vol. 18, No. 14.
Bowman, Roy H. 1973. Soil Survey of the San Diego Area, California, Part I. U.S. Department of
Agriculture, Soil Conservation Service and Forest Service, in cooperation with the University of
California Agricultural Experiment Station, the U.S. Department of the Interior, Bureau of Indian
Affairs, the Department of the Navy, United States Marine Corps, the Department of Housing and
Urban Development, and the County of San Diego Planning Department. December, 1973.
California Department of Fish and Game. 200ia. Special Animals. July 2001.
California Department of Fish and Game, Natural Heritage Division. 2001b. Rarefind, California
Natural Diversity Data Base.
CGvL. 2001. Lake Calavera Improvements: Conceptual Planning and Preliminary Design Report.
Cathcart, Garcia, and von Langen Engineers and Powell/PBS&J.
City of Carlsbad. 1999. Draft Habitat Management Plan for Natural Communities.
Crother, Brian. 2000. Scientific and Standard English Names of Amphibians and Reptiles of North
America North of Mexico, With Comments Regarding Confidence In Our Understanding.
Society for the Study of Amphibians and Reptiles, Herpetological Circular No. 29.
Dickinson, Mary B., ed. 1999. Field Guide to the Birds of North America. National Geographic Society.
Washington D.C.
Hickman, James C, ed. 1993. The Jepson Manual: Higher Plants of California. University of
California Press, Berkeley. 1182 pp.
Holland, Robert F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California.
Non-game Heritage Program, California Department of Fish and Game.
Jones, C, R. Hoffmann, D. Rice, R. Baker, M. Engstrom, R. Bradley, D. Schmidly, C. Jones. 1997.
Revised Checklist of North American Mammals North of Mexico. Occas. Papers Museum,
Texas Tech Univ.
Merkel c& Associates, Inc. # 01-068-0! 38
Uike Calavera May I, 2003
y Munsell Color. 1974. Munsell Soil Color Charts. Macbeth, a Division of Kollmorgen Corporation,
Baltimore, Maryland.
PI
y Oberbauer, Thomas. 1996. Terrestrial Vegetation Communities in San Diego County, Based on
Holland's Descriptions. County of San Diego, Department of Planning and Land Use.
3 Unpublished list. Revised February 1996.
Skinner, M. and B. Pavlik. 1994. Inventory of Rare and Endangered Plants of California.
— California Native Plant Society Publication No. 1, Fifth Edition. Sacramento.
Stall, Chris. 1990. Animal Tracks of Southern California. The Mountaineers, Seattle.
S Stebbins, Robert C. 1985. A Field Guide to Western Reptiles and Amphibians. Houghton Miffiin
Company, New York.
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Story, Pat. Draft report on Lake Calavera studied. North County Times. July 15,2001.
Soule', Michael, and John Terbough, eds. 1999. Continental Conservation: Scientific Foundafions
of Regional Reserve Networks. Island Press. Washington D.C. and Covelo, California.
Oberbauer, Thomas. 1996. Vegetation Communities in San Diego County Based on Holland's
Descriptions. Unpublished list.
Preserve Calavera. Calavera Area Information. Retrieved March 7, 2002.
http://www.preservecalavera.org/calavera.html.
Unitt, Philip. 1984. The Birds of San Diego County. San Diego Society of Natural History. Memoir 13.
Wilson, D. and R. Cole. 2000. Common Names of Mammals of the World. Smithsonian Institution
Press. Washington, D. C.
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APPENDICIES
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^ Merkel & Associates, Inc. It 01-068-01 Appendices
Lake Calavera
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APPENDIX 1. FLORAL CHECKLIST OF SPECIES OBSERVED
Habitat Types:
A = Cis-montane Alkali Marsh 0 = open Water
F = Coastal and Valley Freshwater Marsh R=: Southern Coast Live Oak Riparian Forest
S = Coastal Sage-Chaparral Scrub C = Southern Mixed Chaparral
B = Coyote Brush Scrub W = : Southern Willow Scrub
D = Diegan Coastal Sage Scrub U = Urban/Developed
X = Disturbed Land v = Valley Needlegrass Grassland
M = Mule Fat Scrub
N = Non-native Grassland
E = Non-native Vegetation (Exofic)
* denotes non-native plant taxa
' Merkel iSc Associates. Inc. # 01-068-01 A-l-\ m
Lake Calavera
Scientific Name Common Name Habitat
I
CRYPTOGAMS
Pentagramma triangularis (Kaulf )Yats. ssp. viscosa (Eaton)Yats.
Silverback Fern
DICOTYLEDONS
R
Aizoaceae - Carpet-weed Family
*Carpobrotus edulis (Molina)N.E. Brit.
Anacardiaceae - Sumac Family
Malosma laurina (Ton. & Gray)Abrams
Rhus integrifolia (Nutt.)Benth. & Hook.
Toxicodendron diversilobum (Torrey & Gray)Greene
Apiaceae - Carrot Family
^Apium graveolens L.
*Conium maculatum L.
*Foeniculum vulgare Mill.
Sanicula arguta (Torrey & Gray)Coult. & Rose
Sanicula crassicaulis DC.
Hottentot-Fig
Laurel Sumac D
Lemonadeberry D
Western Poison Oak R
Celery W
Common Poison Hemlock W
Fennel X
Sharp-tooth Sanicle V
Pacific Sanicle V
Asteraceae - Sunflower Family
Ambrosia psilostachya DC. Western Ragweed M
Artemisia californica Less. California Sagebrush D
Baccharis pilularis DC. Coyote Brush B
Baccharis salicifoUa (R. & P.)Pers. Mule Fat M
*Centaurea melitensis L. Tocalote N
*Cirsium vulgare (Savi)Ten. Bull Thisde W
*Cynara cardunculus L. Cardoon N
Encelia californica Nutt. California Encelia D
Eriophyllum confertiflorum (DC.)Gray var. confertiflorum Golden-yarrow D
*Gazania sp. Gazania E
Gnaphalium bicolor Bioletti Bicolor Cudweed D
Gnaphalium californicum DC. California Everlasting D
Gutierrezia sarothrae (Pursh)Britt. & Rusby Matchweed D
Hazardia squarrosa ssp. grindelioides (DC.)Clarke Saw-toothed Goldenbush D
Hemizonia fasciculata (DC.)Torrey & Gray Fascicled Tarplant D
Isocoma menziesii (Hook. & Arn.)Nesom var. menziesii Goldenbush N
*Picris echioides L. Bristly Ox-tongue W
Pluchea odorata Cav. Salt Marsh Fleabane W
Stephanomeria diegensis Gottlieb San Diego Wreath-Plant D
"^Xanthium strumarium L. Cocklebur W
Boraginaceae - Borage Family
Amsinckia intermedia (Lehm.) Nelson & J.F. Macbr.
Cryptantha intermedia (Gray)Greene
Fiddleneck
Nievitas, Cryptantha
D
D
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Scientific Name Common Name Habitat
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Heliotropium curvassavicum L.
Brassicaceae - Mustard Family
*Brassica nigra (L.)Koch
*Hirschfeldia incana (L.)Lagr.-Fossat
*Lobularia maritima (L.)Desv.
*Rorippa nasturtium-officinale (L.)Hayek
Cactaceae - Cactus Family
*Opuntia ficus-indica (L.)MiHer
Opuntia littoralis (Engelm.)Ckll.
Capparaceae - Caper Family
Isomeris arborea Nutt.
Caprifoliaceae - Honeysuckle Family
Lonicera subspicata var. denudata Rehd.
Sambucus mexicana DC.
Cistaceae - Rock-Rose Family
Helianthemum scoparium Nutt.
Convolvulaceae - Morning-Glory Family
Dichondra occidentalis House
Crassuiaceae - Stonecrop Family
Dudleya pulverulenta (Nutt.)Britt. & Rose
Cucurbitaceae - Gourd Family
Marah macrocarpus (Greene)Greene var. macrocarpus
Ericaceae - Heath Family
Xylococcus bicolor Nutt.
Euphorbiaceae - Spurge Family
Eremocarpus setigerus (Hook.)Benth.
*Ricinus communis L.
Fabaceae - Pea Family
^Acacia baileyana
Lathyrus vestitus Nutt. ssp. alefeldii (White)Isely
Lotus scoparius (Nutt.)Ottley var. scoparius
*Medicago polymorpha L.
Fagaceae - Oak Family
Quercus agrifolia Nee
Salt Heliotrope
Black Mustard
Short-pod Mustard
Sweet Alyssum
Water Cress
Indian-fig
Coast Prickly-pear
Bladderpod
San Diego Honeysuckle
Blue Elderberry
Peak Rush-rose
Western Dichondra
Chalk-lettuce
Wild-Cucumber
Mission Manzanita
Doveweed
Castor-bean
Bailey Acacia
San Diego Sweetpea
Coastal Deerweed
California Burclover
Coast Live Oak
W
N
N
N
F
D
D
D
D
D
D
D
D
N
N
E
D
D
N
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^ Scientific Name Common Name Habitat
Quercus berberidifolia Liebm. Scrub Oak C
Geraniaceae - Geranium Family
'^Erodium botrys (Cav.)Bertol. Long-beak Filaree G
'^Erodium cicutarium (L.)L'Her. Red-stem Filaree G
Geranium carolinianum L. Carolina Geranium R
Grossulariaceae - Currant Family
Ribes indecorum Eastw. White Flowering Currant D
Ribes speciosum Pursh Fuchsia-flowered Gooseberry D
Hydrophyllaceae - Waterleaf Family
Phacelia ramosissima Lehm. var. latifolia (Torrey)Cronq. Caterpillar Phacelia D
Pholistoma auritum (Lindl.)Lilja Fiesta Flower R
Lamiaceae - Mint Family
Salvia apiana Jeps. White Sage D
Salvia mellifera Greene Black Sage D
Malvaceae - Mallow Family
Malacothamnus fasciculatus (Nutt.)Greene Mesa Bush Mallow D
Sidalcea malvaeflora (DC.)Benth. ssp. sparsifolia C.L. Hitchc.
Checker-bloom V
Myrtaceae - Myrtle Family
^Eucalyptus sideroxylon Benth. Red Ironbark E
"^Eucalyptus sp. Eucalyptus E
Onagraceae - Evening-Primrose Family
Clarkia purpurea (Curtis)Nelson & Macbr. ssp. viminea (Dougl.)Lewis & LewisLarge ClarkiaR
Paeoniaceae - Peony Family
Paeonia californica Torrey & Gray California Peony R
Plantaginaceae - Plantain Family
Plantago erecta Morris Dot-seed Plantain D
Polemoniaceae - Phlox Family
Navarretia hamata Greene ssp. hamata Hooked Skunkweed D
Polygonaceae - Buckwheat Family
Eriogonum fasciculatum Benth. war.foliolosum (Nutt.)S. Stokes
Interior Flat-top Buckwheat D
*Rumex crispus L. Curiy Dock A
Portulacaceae - Purslane Family
Claytonia perfoliata Donn ssp. perfoliata Common Miner's-lettuce R
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Primulaceae - Primrose Family
Dodecatheon clevelandii Greene ssp. clevelandii
Rhamnaceae - Buckthorn Family
Adolphia californica Wats.
Rhamnus crocea Torrey & Gray
Rosaceae - Rose Family
Adenostoma fasciculatum Hook & Arn.
Heteromeles arbutifolia (Ait.)M. Roem.
Potentilla glandulosa Lindl. ssp. glandulosa
Rosa californica C. & S.
Padre's Shoodng Star
California Adolphia
Spiny Redberry
Chamise
Toyon
Sticky Cinquefoil
California Rose
Rubiaceae - Madder Family
Galium angustifolium Nutt. ex Torrey & Gray ssp. Angustifolium
Narrow-leaf Bedstraw
SaUcaceae - Willow Family
Salix gooddingii Ball
Salix lasiolepis Benth.
Salix lucida Muhlenb. ssp. lasiandra (Benth)Murray
Goodding's Black Willow
Arroyo Willow
Lance-leaf Willow
Saururaceae - Lizard-tail Family
Anemopsis californica Hook.
Saxifragaceae - Saxifrage Family
Jepsonia parryi (Torr.)Small
Yerba Mansa
Coast Jepsonia
Scrophulariaceae - Figwort Family
Keckiella cordifolia (Benth.)Straw
Mimulus aurantiacus Curtis
Scrophularia californica Cham. & Schldl. ssp.floribunda (Greene)Shaw
California Figwort
Climbing Bush Penstemon
San Diego Monkeyflower
Solanaceae - Nightshade Family
*Nicotiana glauca Grab.
Tamaricaceae - Tamarisk Family
*Tamarix sp.
MONOCOTYLEDONS
Arecaceae - Palm Family
"^Washingtonia filifera (Lindl.)Wendl.
Tree Tobacco
Tamarisk
California Fan Palm
V
D
D
C
C
R
R
D
W
W
W
W
D
D
D
D
G
W
W
Merkel & Associates, Inc. 01-068-01 A-i-5
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Lake Calavera
ScientiHc Name Common Name Habitat
[
I
I
I
I
I
I
I
I
I
Cyperaceae - Sedge Family
Carex spissa L. H. Bailey
Cyperus eragrostis Lam.
Eleocharis montevidensis Kunth
Scirpus californicus (CA. Mey.)Steudel.
Iridaceae - Iris Family
Sisyrinchium bellum Wats.
Juncaceae - Rush Family
Juncus acutus L. ssp. leopoldii (Parl.)Snag.
Juncus bufonius L. var. bufonius
Juncus dubius Engelm.
Juncus mexicanus Willd.
Juncus xiphioides E. Mey.
LiHaceae - Lily Family
Bloomeria crocea (Torr.)Cov.
Calochortus splendens Benth.
Chlorogalum pomeridianum (DC.)Kunth
Yucca schidigera Ortgies
Poaceae - Grass Family
*Arundo donax L.
"^'Bromus diandrus Roth
*Bromus hordeaceus L.
"^Bromus madritensis L. ssp. rubens (L.)Husnot
*Cortaderia jubata (Lem.)Stapf
Distichlis spicata (L.)Greene
*Gastridium ventricosum (Gouan)Schinz & Thell.
*Hordeum murinum ssp. leporinum (Link)Arcang.
Leymus condensatus (Presl)A. Love
Nassella lepida (A.S. Hitchcock)Barkworth
Nassella pulchra (A.S. Hi tchcock)B ark worth
*Piptatherum miliaceum (L.)Cosson
*Polypogon monspeliensis (L.)Desf.
*Vulpia myuros (L.)Gmelin var. hirsuta (Hacked)Asch
Typhaceae - Cat-Tail Family
Typha latifolia L.
San Diego Sedge
Tall Ratsedge
Dombey's Spike-sedge
California Bulrush
Blue-eyed-grass
Spiny Rush
Toad Rush
Mariposa Rush
Mexican Rush
Iris-leaf Rush
Common Goldenstar
Splendid Mariposa
Wavy-leaf Soap-plant
Mojave Yucca
Giant Reed
Ripgut Grass
Soft Chess
Red Brome
Pampas Grass
Saltgrass
Nit Grass
Hare Bariey
Giant Wild Rye
Foothill Needlegrass
Purple Needlegrass
Smilo Grass
Annual Beard Grass
& Graetoner
Foxtail Fescue
Broad-leaved Cattail
W
W
W
F
V
W
W
W
W
W
D
D
D
D
W
N
N
N
N
A
D
N
D
V
V
D
W
N
I Merkel & Associates, Inc. #01-068-01 A-1-6
Lake Calavera
^ APPENDIX 2. FAUNAL CHECKLIST OF SPECIES OBSERVED
Habitat Types:
0
I
I
I
I
I
D = Diegan Coastal Sage Scrub G = Non-native Grassland, Valley Needlegrass
F = Coastal and Valley Freshwater Marsh Grassland, Disturbed Land, or other open
J ^ O = Southern Coast Live Oak Riparian Forest habitats
U S = Southern Willow Scrub W = Open Water
A = Aerial (flying above site)
Abundance Codes:
A = Abundant: Almost always encountered in moderate to large numbers in suitable habitat and
the indicated season.
C = Common: Usually encountered in proper habitat at the given season.
U = Uncommon: Infrequently detected in suitable habitat. May occur in small numbers or only
locally in the given season.
R = Rare: Applies to species which are found in very low numbers.
'Numbers' indicate the number of individuals observed during the recent survey work.
Status Codes:
M = Migrant: Uses the site for brief periods of time, primarily during the spring and fall months.
R = Year-round resident: Probable breeder on-site or in the vicinity.
^ S = Spring/summer resident: Probable breeder on-site or in the vicinity.
T = Transient: Uses site regulariy but unlikely to breed on-site.
m
1^ W = Winter visitor: Does not breed locally.
m * = Non-native species.
Merkel & Associates, Inc. # 01-068-01 A-2-1
Lake Calavera
m
Hi
I
I
I
Common Name Scientific Name Habitat Abundance Status
FISH
Poeciliidae (Livebearers)
Mosquitofish* Gambusia affinis W C R
AMPHIBIANS
Hylidae (Treefrogs and Relatives)
Pacific Chorus Frog Pseudacris regilla S,F c R
BIRDS
Podicipedidae (Grebes)
Pied-billed Grebe Podilymbus podiceps F,W c R
Phalacrocoracidae (Cormorants)
Double-crested Cormorant Phalacrocorax auritus W u T
Ardeidae (Herons and Bitterns)
Western Least Bittern Ixobrychus exilis hesperis F R R
Cathartidae (American Vultures)
Turkey Vulture Cathartes aura A R T
Anatidae (Swans, Geese, and Ducks)
Gadwall Anas strepera
Mallard Anas platyrhynchos
Northern Shoveler Anas clypeata
Redhead Aythya americana
Common Merganser Mergus merganser
Ruddy Duck Oxyura jamaicensis
F,W
F,W
W
W
W
W
C
C
C
U
R
C
R
R
M,W
M,W
M,W
R
Accipitridae (Hawks, Old World Vultures, and Harriers)
White-tailed Kite Elanus leucurus
Northern Harrier Circus cyaneus
Sharp-shinned Hawk Accipiter striatus
Cooper's Hawk Accipiter cooperi
Red-tailed Hawk Buteo jamaicensis
0,S,A
D,F,G,A
0,S,A
0,S,A
D,0,S,A
U
U
U
U
C
R
T
M,W
R
R
Falconidae (Caracaras and Falcons)
American Kestrel Falco sparverius D,G,A C R
Merkel <& Associates, Inc. # 01-068-01 A-2-2
Lake Calavera
i
I
I
I
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Common Name Scientific Name Habitat Abundance status
Rallidae (Rails, GalHnules, and Coots)
Virginia Rail Rallus limicola
Sora Porzana Carolina
Common Moorhen Gallinula chloropus
American Coot Fulica americana
F
F
F,W
F,W
U
U
U
c
M,R
M,R
R
R
Columbidae (Pigeons and Doves)
Rock Dove*
Mourning Dove
Columba livia
Zenaida macroura
A
D,G,A
c c
T
R
Apodidae (Swifts)
White-throated Swift Aeronautes saxatalis A c M,R
Trochiiidae (Hummingbirds)
Anna's Hummingbird Calypte anna D,S c R
Alcedinidae (Kingfishers)
Belted Kingfisher Ceryle alcyon F,W u M,W
Picidae (Woodpeckers and Wrynecks)
Nuttall's Woodpecker Picoides nuttallii
Northern Flicker Colaptes auratus
o,s
o,s
c
c
R
R
Tyrannidae (Tyrant Flycatchers)
Black Phoebe
Say's Phoebe
Cassin's Kingbird
Sayornis nigricans
Sayornis saya
Tyrannus vociferans
D,G,S
D,G
D,G,S
c
c c
R
M,W
R
Laniidae (Shrikes)
Loggerhead Shrike Lanius ludovicianus D,G R R
Corvidae (Jays, Magpies, and Crows)
Western Scrub-Jay Aphelocoma californica
American Crow Corvus brachyrhynchos
Common Raven Corvus corax
D,0,S
D,0,S,G,A
D,0,S,G,A
c
c
c
R
R
R
Hirundinidae (Swallows)
Tree Swallow Tachycineta bicolor F,S,W,A c S
Aegithalidae (Bushtit)
Bushtit Psaltriparus minimus D,0,S c R
Troglodytidae (Wrens)
Bewick's Wren
House Wren
Thryomanes bewickii
Troglodytes aedon
D,0,S
S
c
c
R
R
Merkel & Associates, Inc. #01-068-0! A-2-3
Lake Calavera
1
I
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Common Name Scientific Name Habitat Abundance Status
Regulidae (Kinglets)
Ruby-crowned Kinglet Regulus calendula o,s C M,W
Sylviidae (Old World Warblers and Gnatcatchers)
Blue-gray Gnatcatcher Polioptila caerulea
Coastal California Gnatcatcher Polioptila californica
californica
D,0,S
D
U
R
M,R
R
Turdidae (Thrushes)
American Robin Turdus migratorius 0,S U W
Timalidae (Babblers)
Wrenfit Chamaea fasciata D C R
Mimidae (Mockingbirds and Thrashers)
Northern Mockingbird Mimus polyglottos
California Thrasher Toxostoma redivivum
Hermit Thrush Catharus guttatus
D,0,S,A
D
D,0,S
C
C
U
R
R
M,W
Timaiiidae (Wrentit)
Wrentit Chamaea fasciata D,0,S C R
Alaudidae (Larks)
Horned Lark Eremophila alpestris G U M,R
Bombycillidae (Waxwings)
Cedar Waxwing Bombycilla cedrorum S R M,W
Parulidae (Wood-Warblers)
Orange-crowned Warbler
Yellow-rumped Warbler
Common Yellowthroat
Vermivora celata
Dendroica coronata
Geothlypis trichas
D,0,S
D,0,S
F,S
C
C
C
M,R
M,W
M,R
Emberizidae (Emberizids)
Spotted Towhee
California Towhee
Song Sparrow
Lincoln's Sparrow
White-crowned Sparrow
Pipilo maculatus
Pipilo crissalis
Melospiza melodia
Melospiza lincolnii
Zonotrichia leucophrys
D,0,S
D
F,S
D,0,S
D,0,S
C
C
C
U
C
R
R
R
M,W
M,W
Icteridae (Blackbirds and Orioles)
Red-winged Blackbird Agelaius phoeniceus F C R
Merkel & Associates, Inc. # 01-068-0! A-2-4
Lake Calavera
Conunon Name Scientific Name Habitat Abundance Status
Fringillidae (Finches)
House Finch
Lesser Goldfinch
Passeridae (Weaver Finches)
House Sparrow*
Carpodacus mexicanus
Carduelis psaltria
Passer domesticus
D,0,S,G
D,0,S,G
0,S,G
A
C
R
R
R
I
I
I
I
I
MAMMALS
Leporidae (Rabbits and Hares)
Desert Cottontail Sylvilagus audubonii
Sciuridae (Squirrels, Chipmunks, and Marmots)
California Ground Squirrel
Geomyidae (Pocket Gophers)
Botta's Pocket Gopher
Muridae (Rats, Mice, and Voles)
San Diego Desert Woodrat
Dusky-footed Woodrat
Spermophilus beecheyi
Thomomys bottae
Neotoma lepida intermedia
Neotoma fuscipes
Canidae (Foxes, Wolves, and Relatives)
Coyote Canis latrans
Procyonidae (Raccoons and Relatives)
Raccoon Procyon lotor
Mustelidae (Weasels, Badgers, and Relatives)
Western Spotted Skunk Spilogale gracilis
D
D
D
D
0,S
D,0,S,G
D,F,0,S,G
D,G
C
C
U
R
R
R
R
R
R
R
R
Merkel & Associates, Inc. # 01-068-0! A-2-5
d m t 1 II
APPENDIX 5A. SENSITIVE SPECIES (PLANTS) - POTENTIAL PRESENCE AND STATUS
The following abbreviations are used in this table: FE = Federally Endangered, FT = Federally Threatened, FSC = Federal Species of Special Concern, SE =
California ESA Endangered, NE = MSCP Narrow Endemic Species.
* Habitat codes are synonymous to those used in the California Native Plant Society's Inventory of Rare and Endangered Vascular Plants of Cahfornia (Skinner
and Pavlik 1994). CCFrs = closed-cone conifer forest, Chprl = chaparral, CoScr = coastal scrub, CmWld = cismontane woodland, MshSw = marshes and
swamps, Medws = meadows and seeps, RpWld = riparian woodland, VFGrs = valley and foothill grassland, VnPls = vernal pools. For habitat characterizadon
see Skinner and Pavlik 1994.
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Acanthomintha
i lie if alia
San Diego Thorn-
mint
Chpri, CoScr, VFGrs,
VnPls/clay FT SE IB Covered ~
Low. Typical cracked and friable
clay soils associated with this
species are poorly developed on-
site.
Adolphia californica California Adolphia Chprl. CoScr None None 2 Not covered YES
Various populations distributed
throughout mapped sage scrub.
Found above APE boundary.
Ambrosia pumila San Diego Ambrosia CoScr, RpWld FE None IB Covered -Low. Habitat poorly developed on-
site.
Arctostaphylos
glandulosa ssp.
crassifolia
Del Mar Manzanita Chprl FE None IB Covered -Low to none. Northeast of known
range; chaparral sparse on-site.
Arctostaphylos
rainbowensis Rainbow Manzanita Chprl None None IB Not covered -None. Well outside of historical
range.
Baccharis vanessae Encinitas Baccharis Chprl (sandstone) FT SE iB Covered -Low to none. Well outside
historical range.
Brodiaea filifolia Thread-leaf Brodiaea Medws, VFGrs.
VnPls/clay FT CE IB Covered -
Moderate in study area but low to
none in construction limits given
disturi}ed nature of grasslands.
Population known fiom
approximately 1,500 feet south of
the site.
Brodiaea orcutti Orcutt's Brodiaea
CCFrs, Chpri, CmWld,
Medws, VFGrs,
VnPls/clav
None None IB Covered ~ Moderate. Similar habitat
requirements of B. filifolia.
Caulanthus
heterophyllus var.
pseudosimulans
Buck's Jewelflower Chprl, CoScr None None
Listed but
waiting
code.
Not covered -Low to none. Well southwest of
known range.
Ceanothus
verrucosus
Wart-stemmed
Ceanothus Chprl FSC None 2 Covered ~ Low to none. Suitable habitat
limited (»i-site.
Centromadia
pungens ssp, laevis Smooth Tarplant VFGrs FSC None IB Not covered --Low to none. Well outside known
range.
KTJ cn MZ3 cn r 1 t I I i
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Chamaebatia
australis
Southern Mountain
Misery Chpri None None 4 Not covered -None. No suitable habitat present
on-site.
Chorizanthe
orcuttiana Orcutt's Spineflower CoScr FE CE IB Covered -Not expected, north of known
range.
Cvmarostaphylis
diversifolia ssp.
diversifolia
Summer-Holly Chprl FSC None IB Covered -Low. Suitable habitat limited on -
site.
Convolvulus
simutans
Small-flowered
Morning Glory Chprl (openings) None None 4 Not covered -Moderate. Friable clay soils pooriy
developed on-site.
Corelhrogyne
fitaginifolia var.
linifolia
Del Mar Sand Aster CoScr, Chprl. VFGrs None None IB Covered ~ Low. Northeast of known range.
Deinandra
paniculaia Paniculate Tarplant VFGrs, CoScr
(openings) None None 4 Not covered -Low to none. Outside historical
range.
Dichondra
occidentalis Western Dichondra Chpri. CoScr None None 4 Not covered YES
Present on-.site in limited numbers
in sage scrub understory;
population might show resurgence
if site burned. Found above APE
boundary.
Dudleya viscida Sticky Dudleya Chprl, CoScr (.steep
north facing slopes) FSC None 4 Covered ~ Not expected, no suitable habitat
present on-site.
Dudleya
blochmaniae ssp.
blochmaniae
Blochman's Dudleya CoScr FSC CE IB Covered ~ Not expected, generally found
closer to beaches
Eryngium
aristulatum ssp.
parishii
San Diego Button
Celery VnPls FE SE IB Not covered ~ Low to none. No vernal pools
present on-site.
Euphorbia misera Cliff Spurge CoScr None None 2 Covered ~ Low to none. Conspicuous species
not observed.
Ferocactus
viridescens
San Diego Barrel
Cactus Chpri, CoScr FSC None 2 Covered ~ Low. Species searched for, not
found.
Frilillaria biflora
var. biflora Chocolate Lily Chpri, CoScr,
VFGrs/clay None None Unlisted Not covered -Low. Presently not CEQA
sensitive.
Githopsis diffusa ssp.
filicaulis
Mission Canyon
Blue-Cup Chpri (openings) FSC None 3 Not covered ~ Low. Limited habitat present on-
site.
Erl Ell 11 II
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Harpagonella
palmeri
Palmer's Grappling
Hook
Chprl, CoScr,
VFGrs/clay None None 4 Not covered
Moderate. Potentially present in
low numbers in mesic sage scrub
swales.
Hazardia orcuttii Orcutt's Hazardia Chpri FSC Candidate IB Covered Not expected. Well north of sole
U.S. population
Hohcarpha virgata Graceful Tarplant VFGrs FSC None 4 Not covered Moderate. Species searched for,
not found.
Horkelia truncata Ramona Horkelia Chpri, CmWld/
clay None None IB None -Not expected. Lack of suitable
habitat on project site.
Isocoma menzeisii
var. decumbens
Decumbent
Goldenbush CoScrs None None lb Not covered ~
High. Some individuals of
l.wcoma complex likely present on
clay substrates; not botanicalty
significant.
Iva hayesiana San Diego Marsh-
elder
RpWld
(creeks/streambeds) FSC None 2 Covered ~ Low. Near northern edge of known
range.
Juncus acutus ssp.
leopoldii
Southwestern Spiny
Rush MshSw (coastal salt) None None 4 Not covered YES
Present in several drainages; not
botanically significant. Found
above APE boundary.
Machaeranthera
juncea
Rush-like
Bristleweed Chprl, CoScr None None 4 Not covered -Not expected. Well west of known
range
Microseris douglasii Small-flowered
Microseris VFGrs (clay) None None 4 Not Covered -Moderate. Limited hi^ital present
on-site.
Muilla clevelandii San Diego
Goldenstar
Chpri, CoScr
(openings) FSC None IB Covered Low to none. Near extreme
northern end of known range.
Myosurus minimus
ssp. opus Little Mousetail VnPls FSC None 3 Not covered -Low to none. No vernal pools or
vemal swales on-site.
Navarretia fos.mlis Spreading Navarretia VnPls FT None IB Not covered ~ Low to none. No vemal pools or
vemal swales on-site.
Orcuttia californica California Orcutt
Grass VnPls FE CE IB Covered Low to none. No vemal pools or
vemal swales on-site.
Polygala cornuta ssp.
fishiae Fish's Milkwort Chprl, CmWld, RpWld None None 4 Not covered -Not expected. Lack of suitable
habitat on project site
Quercus dumosa Nuttall's Scrub Oak Chpri FSC None IB Not covered -
Low, near interface of Q. dumosa
and Q. berberidifolia populations;
chaparral poorly developed on-site.
Quercus engelmanni Engelmann Oak Chprl, CmWld,
RpWld, VFGrs None None 4 Covered -Conspicuous species not found
Selaginella
cinerascens Ashy-spike Moss Chpri, CoScr None None 4 Not covered YES Present but not CEQA significant.
Found above APE boundary.
Tetracoccus dioicus Parry's Tetracoccus Chpri, CoScr None None IB Covered -Not expected. Habitat not present.
miM f I r I II t I I I
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Viguiera laciniala San Diego County
Viguiera CoScr None None 4 Not covered --
Low. The site is generally outside
of natural range of species, but now
spreading in region via introduced
hydroseed mixes.
•F1 1^ era la
APPENDIX 5B. SENSITIVE SPECIES (ANIMALS) - POTENTIAL PRESENCE AND STATUS
The following abbreviations are used throughout the table: FE = Federally Endangered, FT = Federally Threatened, CSC = CDFG Species of Special Concern;
SA = CDFG Special Animal, SE = California ESA Endangered, . ST = California ESA Threatened. The abbreviation, FSC, indicates "Federal Species of
Concern". This is a "term of art" for former Category 2 species whose conservation status is of concern to the USFWS but for which no official status has been
designated. It is provided here for informational purposes only.
Common Name ScientiHc Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
Quino Checkerspot
Butterfly
Euphydiyas editha quino Open grassland and openings within
shrub habitats that support Dwarf
Plantain {Plantago erecta)
FE SA Not Covered Not
expected
I^w. Outside of current known
range.
Harbison's Dun Skipper Euphyes veslris harbisoni Oak woodlands, riparian woodlands,
and riparian scrub.
FSC
••
Covered Not
expected
Moderate. Host plant present
upstream of APE.
Hermes Copper Lycaena hermes Openings in chaparral, associated
with the larval host plant Spiny
Redberry {Rhamnus crocea), adults
feed on nectar from Rat-top
Buckwheat
FSC SA Covered Not
expected
Low. Site is generally northwest
of cun^nt known range.
Salt Marsh Skipper Panoquina errans Forages in coastal salt marsh None None Covered Potentially
present
Low. May occupy brackish
marsh habitat near comer of El
Camino Real and Tamarack. High
quality habitat surrounds Agua
Hedionda Lagoon,
Riverside Fairy Shrimp Streptocephalus wootloni Lives in deeper, longer sustaining
vemal pools
FE None Covered Not
expected
None. Lack of vemal pool
habitat.
San Diego Fairy Shrimp Branchinecta
sandiegoensis
Lives in vemal pools FE None Covered Not
expected
None. Lack of vemal pool
habitat.
Arroyo Toad Bufo californicus Shallow pools, open sand, and gravel
flood terraces of intermittent to
perennial streams.
FE CSC.
Protected
Covered Not
expected
None. Lack of vemal pool
habitat.
Western Spadefoot Toad Scaphiopus fiamnumdii Sandy or gravelly soil in grasslands,
sage scrub, open chaparral, and pine-
oak woodlands; grasslands with
shallow temporary pools are optimal
FSC CSC,
Protected
Not Covered Potentially
present.
Low. Potentially present on-site
in limited numbers in grassy areas
.and sage scrub
California Red-legged
Frog
Rana aurora Quiet permanent stream pools,
marshes, and ponds
FT CSC,
Protected
Not Covered Not
expected
None. Species is likely extirpated
from southern California.
Southwestern Pond Turtle Clemmys marmorata
pallida
Quiet permanent stream pools, and
ponds
FSC CSC Covered Potentially
present.
Low. Lake may provide marginal
habitat but lacks suitable haul-out
sites. Species on verge of
extirpation in area.
r i I I iin r 1 u r i r i r i tn r j ti i r i i j i i
Common Name ScientiHc Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
San Diego Homed Lizard Phrynosoma coronatum
blainvillii
Chaparral, sage scrub, oak
woodlands, and grasslands;
sometimes occurs along seldom used
dirt roads where native ant species
are prevalent
FSC CSC,
Protected
Covered Potentially
present
Moderate. Fair quality habitat for
this species.
Coronado Skink Eumeces skiltonianus
inteqmrietalis
Variety of habitats including
grasslands, sage scrub, and various
woodlands including oak. pine,
juniper, and riparian
FSC CSC None Potentially
present
High. Fair quality habitat for this
species present.
Orangethroat Whiptail Cnemidophorus
hyperythrus
Open sage scrub and chaparral,
prefers sandy areas with patches of
brash and rocks.
FSC CSC.
Protected
Covered Potentially
present
High. Fair quality habitat for this
species present.
Coa-stal Western Whiptail Cnemidophorus tigris
multiscutatus
Open sage scrab, chaparral, and
wooded areas. Avoids dense
grassland and heavy vegetation
FSC SA None Potentially
present
Moderate. Fair quality habitat for
this species present.
Coastal Rosy Boa Lichanura trivirgata
roseofusca
Rocky outcrop areas within
chaparral and sage scrub
FSC SA None Potentially
present
Low. Rocky terrain prefeired by
this species poorly represented
on-site.
Two-striped Garter Snake Thamnophis hammondi Associated with semi-permanent and
permanent bodies of water in a
variety of habitats; requires a
relatively dense riparian border
None CSC,
Protected
None Potentially
present
Moderate. Lake and adjoining
riparian area provide habitat.
Northern Red Diamond
Rattlesnake
Crotalus ruber ruber Rocky outcrops and areas of heavy
brush or mgged terrain in chaparral,
sage scrub, or desert scrub on both
coastal and desert slopes, usually
below 4000 feet
FSC CSC None Potentially
present
High. The site supports habitat
for this species in sage scrub
although rocky outcrops are few.
Northern boundary of subspecies.
While-tailed Kite Elanus leucurus Grasslands, agricultural fields, and
open habitats with areas of dense
deciduous trees for nesting
None SA, Fully
Protected
None Present Expected to regularly hunt on-
site; loss of habitat will result in
cumulative regional impact for
this species
Golden Eagle Aquila chrysaetos Nests in cliffs (or trees), found in
generally mountainous or hilly
terrain
None CSC, Fully
Protected
Covered Potentially
present
Low. Urbanization of area has
eliminated isolation required for
nesting. Occasional wintering
individuals may forage over open
terrain in area..
American Peregrine Falcon Falco peregrinus anatum Forages generally near coastal
wetlands
FE CE Covered Potentially
present
Low. Somewhat tolerant of
urbanization but inaccessible sites
required for nesting. Most likely
would occur as migrant.
Sharp-shinned Hawk Accipiter striatus Mixed woodlands near open areas,
prefers but not restricted to riparian
habitats
None CSC None Potentially
present
seasonally
High. Potential for sporadic
occurrence in winter, nests
outside of region.
C 1 K?!fl till
Common Name ScientiHc Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probabili^ of
Occurrence/Reason for
Absence
Cooper's Hawk Accipiter cooperii Oak, riparian deciduous or other
woodland habitats usually near water
None CSC Covered Present. Limited occurrence with nesring
possible in vicinity.
Northern Harrier Circus cyaneus Forages over marsh, open sage scrub
and grassland
None CSC Covered Present At least seasonally hunts open
terrain on-site; loss of habitat will
result in cumulative regional
impact for this species.
Osprey Pandion haliaetus Forages over lagoons, bays, and
lakes; primarily hunting for fish
None CSC Covered Potentially
present
Low. Forages at Agua Hedionda
Lagoon and may occasionally
over-fly Calavera Lake in
foraging or as migrant.
Loggerhead Shrike Lanius ludovicianus Found within grassland or open
habitats with bare ground and sparse
shrub and/or tree cover for nesting
and perching
FSC CSC None Present Site is disturbed and .supports fair
to good quality open foraging
habitat for this species.
Elegant Tem Sterna elegans Forages in bays, lagoons, ocean None CSC Covered Not
Expected
None. Coastal species
Califomia 1-east Tem Sterna antillarum browni Forages in bays, lagoons, ocean None CSC Covered Not
Expected
None. Coastal species
California Brown Pelican Pelecanus occidentalis
californicus
Forages over open salt water FE CE Covered Not
Expected
None. Coastal species
Long-billed Curlew Numenius americanus Forages within coastal salt marsh None CSC Covered Not
Expected
None. Coastal species
Tricolored Blackbird Agelaius tricolor Typically found near ponds in region None CSC Covered Potentially
present
Moderate. May forage
occasionally on-site as migrant
along primary creek near cattails.
Generally requires more extensive
marshes for nesting. Limited
potential for nesting.
Light-fooled Clapper Rail Rallus longirostris levipes Salt marsh; typically in stands of
pickleweed and Spartina foliosa
FE CE Covered Not
Expected
None. Coastal species. Requires
extensive salt or brackish
marshes. Present in low numbers
in Agua Hedionda Lagoon.
Westem Snowy Plover Charadrius alexandrinus
nivosus
Forages along open beaches and
expanses of lagoon devoid of
substantial vegetation
FT CSC Covered Not
Expected
None. Coastal species. Requires
open to sparsely covered beaches.
While-faced Ibis Plegadis chihi Forages near wetlands and in
brackish marsh/salt marsh
None CSC Covered Potentially
present
Low. May rarely forage in
wetlands on-site possibly as
migrant or winter visitor.
Least Bell's Vireo Vireo bellii pusillus Willow riparian with dense
undei^rowlh, typically early
successional habitat
FE SA,SE Covered Potentially
present
seasonally
Moderate. Willow riparian on-
site is adequate for nesting but
younger denser stands generally
preferred. May forage on-site as
w: 1 mm ti.:i tu czi c:^ r^i t I
Common Name ScientiHc Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence^eason for
Absence
migrant.
California Homed Lark Eremophila alpestris actio Grasslands, distuibed areas and open
habitats with sparse, low vegetation
None CSC None Present Good open terrain habitat exists
on-site for migrants as well as
nesting.
BuiTowing Owl Speotyto cunicularia
hypugaea
Hunts open terrain generally with
bunow at a slight elevational rise
None CSC Covered Potentially
present.
Low, most likely as migrant or
wintering. Suitable nesting
habitat compromised by heavy
human use.
Califomia Gnatcatcher Polioptila califoniica
californica
Various stages of Artemisia
califoniica-dommated sage scrab
FT CSC Covered Present Male/female pair and addirional
male observed. Presence
significant.
Westem Bluebird Sialia mexicana Open woodlands, farmlands, and
orchards
None None Covered Potentially
present
seasonally
I^w. May occur on-site in
limited numbers during migration
or wintering.
Yellow Warijler Dendroica petechia Older willow riparian None CSC None Potentially
present
seasonally
Moderate. Willow riparian on-
site is of marginal height for
nesring. May forage on-site as
migrant.
Yellow-breasted Chat Icleiia virens Willow riparian with dense
undergrowth
None CSC Covered Potentially
present
seasonally
Moderate. Willow riparian on-
site is adequate for nesting but
younger denser stands generally
preferred. May forage on-site as
migrant.
Cactus Wren Campylorhynchus
brunneicapiltus cousei
Areas of sage scrub with robust
stands of prickly pear and cholla
None CSC Covered Not
expected
None. Requires substantial stands
of cacri for nesring.. Such stands
are non-existent on-site.
Southern Califomia
Rufous-crowned Sparrow
Aimophila ruficeps
canescens
Rocky hillsides supporting sparse,
low scrub or chaparral, sometimes
mixed with gra,sses
FSC CSC Covered Present Present in sage scrub habitat.
Species still well di.stributed in
San Diego County
Bell's Sage Sparrow Amphispiza belli belli Chaparral and dense sage scmb FSC CSC Covered Potentially
present
Lx)w. Site is relatively disturt}ed
and supports low quahty habitat
for this species.
Large-billed Savannah
Sparrow
Passe rcu lus sandw ichen sis
rostratus
Forages at edge of bays, lagoons,
ocean; typically near pickleweed
None CE Covered Not
expected
None. Coastal species. Requires
extensive salt marsh habitat.
Belding's Savannah
Sparrow
Passe rcu lus sandwichensis
beldingi
Forages at edge of bays, lagoons;
typically near pickleweed
None CE Covered Not
Expected
None. Coastal species. Requires
extensive salt marsh habitat.
Southwestern Willow
Flycatcher
Empidonax Iraillii extimus Willow riparian with both dense
undergrowth and developed upper-
story.
FE CSC Covered Potentially
present
seasonally
Low. Habitat on-site not
extensive enough for nesting.
May forage on-site as migrant.
KIJ t 1 t 1 II
Common Name Scientific Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
Mountain Lion Felis concolor Found in areas of extensive dense
native vegetation
Calif.
Regulated
Covered Not
expected
Low. The site probably now lies
outside the range of any lions due
to peripheral urban development
Southern Mule Deer Odocoileus hemionus
fuliginata
Found in areas of extensive dense
narive vegetation
None Calif.
Regulated
Covered Expected Srill present in low numbers in
area; likely to become extirpated
due to peripheral urban
development in near future.
San Diego Black-tailed
Jackrabbil
Lepus californicus
beiinetlii
Relatively open chaparral and sage
scrub and grasslands
FSC CSC None Potenrially
present
High. Site supports some suitable
quality habitat for this species.
Dulzura Califomia Pocket
Mouse
Perognalhus longimembris
paciftcus
Found in areas of fine sandy ground
within Coastal Sage Scrub
FSC CSC None Not
expected
Low. Site is relarively disturijed
and supports low quality hi^itat
for this species.
Northwestern San Diego
Pocket Mou.se
Chaetodipus fallax fallax Found in Coastal Sage Scmb FSC CSC None Potenrially
present
Moderate. Site supports fair
quality habitat for this species.
Stephen's Kangaroo Rat Dipodomys slephensi Areas of sparse vegetation primarily
grasslands, but may occur in sage
scrab or disluibed areas
FE SA,ST None Not
expected
Low. Site is disturbed and lies
southwest of known range of this
species.
San Diego Desert Woodrat Neotoma lepida intermedia Chaparral, particulariy abundant in
areas of rock outcrops
FSC CSC None Potenrially
present
Site supports suitable habitat for
this species.
•Wl Lake Calavera
APPENDIX 3. WETLAND DATA FORMS
Merkel & Associates, Inc. It 01-068-0!
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Plot ID: DPI, PPl
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Nicotiana glauca FAC 9.
2. Vulpia myuros H FACU 10.
3. Baccharis salicifoUa FACW 11.
4. Sambucus mexicana FAC 12.
5. 13.
6. 14.
7. 15.
16.
Percentage of Dommant Species that are OBL, FACW or FAC (excluding FAC-). 75%
Remarks: Hydrophytic vegetation criteria satisfied. Some DCSS species interspersed in
vegetation, such as California Sagebrush and Goldenbush, but they are not dominants.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
Q Saturated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sediment Deposits
[~~| Drainage Patterns in Wetlands
Secondary Indicators (2 or more requked):
[] Oxidized Root Channels in Upper 12 Inches
Qj Water-Stained Leaves
• Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: No hydrology indicators. Data point located outside bank of drainage patterns
SOD.S
Ml
I
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations ~ "
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes • No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Strucmre, etc.
0-12 10 YR 4/2 7.5 YR 4/6 large, distinct,
coarse sandy clay
I
Hydric Soil Indicators:
_i Histosol
|~] Histic Epipedon
• Sulfidic Odor
n Aquic Moisture Regime
^ Reducing Conditions
^ Gleyed or Low-Chroma Colors
I I Concretions
Q High Organic Content in surface layer in Sandy Soils
|~j Organic Streaking in Sandy Soils
n Listed on Local Hydric Soils List
( I Listed on National Hydric Soils List
[~~] Other (Explain in Remarks)
Remarks: Low-chroma color soils with mottles and concretions.
ii
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes S No Q
Wetland Hydrology Present? Yes • No ^
Hydric Soils Present? Yes ^ No • Is this Sampling Pomt Within a Wetland? Yes • No
Remarks: Patch of Mule Fat Scrub within Southern Willow Scrub vegetation. CDFG
jurisdiction only.
I
Approved by HQUSACE 3/92
I
I
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Califomia
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes 0 No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes 0 No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes 0 No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Plot ID: DP2, PP2
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes 0 No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Picris echioides H FAC 9.
2. Hirschfeldia incana H UPL 10.
3. Baccharis salicifoUa S FACW 11.
4. Sambucus mexicana S FAC 12.
5. 13.
6. 14.
1. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 75%
Remarks: Hydrophytic vegetation criteria satisfied.
HYDROLOGY
I
•
Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
1^ Aerial Photographs
• Other
No Recorded Data Available,
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
I I Inundated
Q Saturated in Upper 12 mches
• Water Marks
• Drift Lines
I I Sediment Deposits
[~| Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q] Oxidized Root Channels m Upper 12 Inches
Q Water-Stained Leaves
Q] Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain m Remarks)
Remarks: No hydrology indicators. Soil is moist but not saturated.
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes • No
Profile Description:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottle
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-16 7.5 YR 3/2 sandy clay loam
Hydric Soil Indicators:
^ Q Histosol
1 1 Histic Epipedon
• Sulfidic Odor
[ 1 Aquic Moisture Regime
1 1 Reducmg Conditions
I 1 Gleyed or Low-Chroma Colors
[~~| Concretions
Q High Organic Content in surface layer in Sandy Soils
1 1 Organic Streaking in Sandy Soils
Q Listed on Local Hydric Soils List
Q Listed on National Hydric Soils List
Q Other (Explain in Remarks)
Remarks: No hydric soil indicators.
I
I
I
WETLAP4D DETERMINATION
Hydrophytic Vegetation Present? Yes (SI No •
Wetland Hydrology Present? Yes • No
Hydric Soils Present? Yes • No IE Is this Sampling Point Within a Wetland? Yes • No ^
Remarks: Southern Willow Scrub vegetation under CDFG jurisdiction only.
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2 002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP3, PP3
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Sambucus mexicana S FAC 9.
2. Cyperus eragrostis H FACW 10.
3. Baccharis salicifolia S FACW 11.
4. 12.
5. 13.
6. " 14.
1. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Mule Pat Scrub at perimeter of pond surrounded by Southern Willow Scrub.
HYDROLOGY
^ Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
Q No Recorded Data Available -.
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
r~] Inundated
^ Saturated in Upper 12 inches
• Water Marks
• Drift Lines
j I Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
• Water-Stained Leaves
Q Local Soil Survey Data
1^ FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: Data point located at edge of pond,
IP
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes g] No
Profile Description:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottle
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-16 7.5 YR 4/2 sandy clay loam
Hydric Soil Indicators:
,/| [ Histosol
[~] Histic Epipedon
• Sulfidic Odor
^ Aquic Moisture Regime
I I Reducing Conditions
[~] Gleyed or Low-Chroma Colors
|~~] Concretions
[ I High Organic Content in surface layer in Sandy Soils
[~] Organic Streaking in Sandy Soils
I I Listed on Local Hydric Soils List
I I Listed on National Hydric Soils List
[~] Other (Explain in Remarks) I
I Remarks; Hydric soils indicated by aquic moisture regime.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ 3 No •
Wetland Hydrology Present? Yes ^ ^ No •
Hydric Soils Present? Yes 0 3 No • Is this Sampling Point Within a Wetland? Yes | gl No •
Remarks: Patch of Mule Fat Scrub vegetation within Southern Willow Scrub..
I
I
I
I
Approved by HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delmeation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? EI Yes • No
Is the site significantly disturbed (Atypical Situation)? Q Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Community ID: CBS Do normal circumstances exist on the site? EI Yes • No
Is the site significantly disturbed (Atypical Situation)? Q Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? EI Yes • No
Is the site significantly disturbed (Atypical Situation)? Q Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Plot ID: DP4, PP4
Do normal circumstances exist on the site? EI Yes • No
Is the site significantly disturbed (Atypical Situation)? Q Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Baccharis pilularis s UPL 9.
2. Geranium carolinianum H UPL 10.
3. Juncus dubious H FACW 11.
4. Ambrosia psilostachya H FAC 12.
5, 13.
6. ' 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excludmg FAC-). 5 0 %
Remarks: Coyote Brush Scriib vegetation. Area consxsts of small island-like feature m
middle of drainage.
HYDROLOGY
^ Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
f~[ No Recorded Data Available -
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
Saturated in Upper 12 inches
Water Marks
Drift Lines
^ Sediment Deposits
Q Drainage Patterns m Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC-Neutral Test
Other (Explain in Remarks)
•
•
•
•
•
•
•
Remarks: Hydrology indicated by saturated soil.
son.s
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations ~ ~
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes ^ No
Profile Description:
Depth Matt-ix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structtire, etc.
0-2
2-12
10 YR 3/2
10 YR 4/6
sandy clay
loamy sand
Hydric Soil Indicators:
Q Histosol
I I Histic Epipedon
• Sulfidic Odor
Q Aquic Moisture Regime
r~l Reducing Conditions
Q Gleyed or Low-Chroma Colors
Q Concretions
[]] High Organic Content in surface layer in Sandy Soils
rn Organic Streaking in Sandy Soils
[~~[ Listed on Local Hydric Soils List
r~| Listed on National Hydric Soils List
Other (Explain In Remarks)
Remarks: No hydric soil indicators.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes • No ^
Wetland Hydrology Present? Yes lEI No •
Hydric Soils Present? Yes • No |^ Is this Sampling Point Within a Wetland? Yes • No ^
Remarks: Non-wetland Waters of the U.S.
Approved by HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explam on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explam on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explam on reverse.)
Plot ID: DP5, PP5
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explam on reverse.)
VEGETATION
1. Baccharis salicifoUa
2. Salix lasiolepis
FACW
FACW
9.
10.
11.
12.
14.
15.
16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Southern Willow Scrub vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
1^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil;
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
^ Saturated in Upper 12 inches
• Water Marks
• Drift Lines
Q] Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
• Other (Explain in Remarks)
Remarks: Hydrology indicated by saturated soil.
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes jg| No
Profile Descriotion:
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structtire, etc.
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structtire, etc.
0-5 10 YR 3/2 7.5 YR 3/1 large, many,
faint
sandy clay loam
5-14 10 YR 5/2 clay
Hydric Soil Indicators:
• Histosol Q Concretions
• Histic Epipedon • High Organic Content in surface layer in Sandy Soils
• Sulfidic Odor [~] Organic Streaking in Sandy Soils
^ Aquic Moisture Regune • Listed on Local Hydric Soils List
Q Reducing Conditions • Listed on National Hydric Soils List
^ Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: Hydric soils indicated by low chroma colors and aquic moisture regime.
I
I
I
I
I
I
I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ No •
Wetland Hydrology Present? Yes ^ No •
Hydric Soils Present? Yes ^ No • Is this Sampling Point Within a Wetland? Yes No •
Remarks: Southern Willow Scrub.
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |g| No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Community ID: MPS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |g| No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |g| No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
Plot ID: DPS, PP6
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |g| No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explam on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
L Baccharis salicifoUa S FACW 9.
2. Malosma laurina s NI 10.
3. Conium maculatum H FACW 11.
4. 12.
5. 13.
6. 14.
7. ,15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 66%
Remarks: Mule Fat Scrub vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
1^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
r~[ Inundated
^ Saturated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
[~~] Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: Hydrology indicated by saturated soil.
m
SOILS
Map Unit Name
(Series and Phase); Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup); Haplic Natrixeralfs Confirm Mapped Type? • Yes n No
Profile Description:
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc. I 0-16 2.5 YR 6/3 clay
Hydric Soil Indicators:
^; Q Histosol
I I Histic Epipedon
• Sulfidic Odor
Aquic Moisture Regime
I i Reducing Condidons
Q Gleyed or Low-Chroma Colors
Q Concrefions
Q High Organic Content in surface layer in Sandy Soils
Organic Streaking in Sandy Soils
[J Listed on Local Hydric Soils List
Q Listed on National Hydric Soils List
Q Other (Explain in Remarks)
I
I
Remarks:
I
I WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes Q
Wetland Hydrology Present? Yes No Q
Hydric Soils Present? Yes ^ No • Is this Sampling Point Within a Wetland? Yes No •
Remarks: Mule Fat Scrub vegetation.
Approved by HQUSACE 3/92
I
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County; San Diego
Invesfigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal cu^cumstances exist on the site? 13 Yes • No Community ID: SWS
Is the site significantly disturbed (Atypical Situation)? • Yes S No Transect ID:
Is the area a potential Problem Area? • Yes S No Plot ID: DP7, PP7
(If needed, explain on reverse.)
VEGETATION
Dommant Plant Species Sttatum Indicator Dominant Plant Species Stratum Indicator
1. Baccharis salicifolia S FACW 9.
2. Cyperus eragrostis H FACW 10.
3. Salix lasiolepis T FACW 11.
4. 12.
5. 13.
6. -14.
1. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Edge of Southern willow Scrub vegetation. Adjacent to Mule Fat Scrub vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available -
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Inundated
^ Saturated in Upper 12 mches
Q Water Marks
• Drift Lines
[3] Sediment Deposits
I I Drainage Patterns in Wetlands
Secondary Indicators (2 or more required);
1^ Oxidized Root Channels m Upper 12 Inches
[]] Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: Hydrology indicated by saturated soil.
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations ~
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? Q Yes ^ No
Profile Descripfion:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-2 2.5 YR 6/3 clay
2-? rock
Hydric Soil Indicators;
I I Histosol
[~[ Histic Epipedon
• Sulfidic Odor
^ Aquic Moisture Regime
j I Reducing Conditions
[~] Gleyed or Low-Chroma Colors
[~~| Concretions
[~] High Organic Content in surface layer in Sandy Soils
I I Organic Streaking in Sandy Soils
[7] Listed on Local Hydric Soils List
[7] Listed on National Hydric Soils List
[~~] Other (Explain in Remarks)
I
I
Remarks: Hydric soils indicated by aquic moisture regime
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ 3 No •
Wetland Hydrology Present? Yes 1^ 3 No •
Hydric Soils Present? Yes g 0 No • Is this Sampling Point Within a Wetland? Yes | 3 No •
Remarks: Southern Willow Scrub.
Approved by HQUSACE 3/92
I
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wedands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County; San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? 0 Yes • No
Is the site significantly disturbed (Atypical Situation)? S Yes • No
Is the area a potential Problem Area? • Yes S No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? 0 Yes • No
Is the site significantly disturbed (Atypical Situation)? S Yes • No
Is the area a potential Problem Area? • Yes S No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? 0 Yes • No
Is the site significantly disturbed (Atypical Situation)? S Yes • No
Is the area a potential Problem Area? • Yes S No
(If needed, explain on reverse.)
Plot ID: DPS, PP8
Do normal circumstances exist on the site? 0 Yes • No
Is the site significantly disturbed (Atypical Situation)? S Yes • No
Is the area a potential Problem Area? • Yes S No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Sttatum Indicator
1. Salix lasiolepis T FACW 9.
2. Typha latifolia H OBL 10.
3. 11.
4. 12.
5. 13.
6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 10 0 %
Remarks: Southern Willow Scrub vegetation growing in storm drain outfall.
HYDROLOGY
•
Recorded Data (Described in Remarks):
n Stream, Lake, or Tide Gauge
Kl Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wedand Hydrology Indicators:
Primary Indicators:
CH Inundated
Saturated in Upper 12 inches
Water Marks
Drift Lines
Sediment Deposits
S Drainage Patterns in Wedands
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)
•
•
•
•
•
•
•
•
Remarks: Drainage patterns in storm drain outfall.
I
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes • No
Profile Description:
Depth Mau-ix Color Mottle Colors Mottie
(inches) Horizon . (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
gravel
Hydric Soil Indicators:
CH Histosol
in Histic Epipedon
• Sulfidic Odor
n Aquic Moisture Regime
• Reducing Conditions
n Gleyed or Low-Chroma Colors
n 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
D Other (Explain in Remarks) I
I
Remarks: Hydric soils characteristics may be present in sediment between gravel
assumed due to predominance of FACW and OBL species.
Soils
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes IXI No f"!
Wedand Hydrology Present? Yes El No •
Hydric Soils Present? Yes ^ No • Is this Sampling Point Within a Wetland? Yes ^ No •
Remarks: Atypical situation: man-made wetland. Not jurisdictional due to SWANK ruling
given dis-connectivity to downstream wetlands.
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I
Approved by HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site:
Applicant/Owner:
Investigator:
Lake Calavera
City of Carlsbad
Vanessa A. Lee, Kara A. Altvater
Date:
County:
State:
January 31, 2002
San Diego
California
Do normal circumstances exist on the site? ^ Yes Q No,
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes S No
(If needed, explain on reverse.)
Community ID:
Transect ID:
Plot ID:
NNG
DP9, PP9
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Hirschfeldia incana H NI 9.
2. Baccharis saicifolia FACW 10.
3. 11.
4. 12.
5. 13.
6. 14.
•7. 15.
16.
Percentage of Dommant Species that are OBL, FACW or FAC (excluding FAC-). 5 0%
Remarks; Hydrophytic vegetation criteria not satisfied.
HYDROLOGY
•
Recorded Data (Described in Remarks):
• Shream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available,.
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators;
[~j Inundated
Saturated in Upper 12 inches
Water Marks
Drift Lines
Sediment Deposits
Drainage Patterns in Wetlands
Secondary Indicators (2 or more requu-ed):
Q Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC-Neutral Test
Other (Explain in Remarks)
a a
•
•
•
•
•
•
•
Remarks: No hydrology indicators
SOILS
Map Unit Name
(Series and Phase); Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? Q Yes |3 No
Profile Descriotion:
Matrix Color Mottie Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc
Depth
(inches) Horizon
Matrix Color Mottie Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc
0-12 10 YR 6/4 5 YR 5/8 few, distinct,
small
silty clay loam
Hydric Soil Indicators:
• Histosol • Concretions
• Histic Epipedon • High Organic Content in surface layer in Sandy Soils
• Sulfidic Odor • Organic Streaking in Sandy Soils
Q Aquic Moisture Regime Q Listed on Local Hydric Soils List
Q Reducing Conditions • Listed on National Hydric Soils List
• Gleyed or Low-Chroma Colors • Other (Explain in Remarks)
Remarks; No hydric soil indicators.
I
I
I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes • No |3
Wetland Hydrology Present? ^ Yes O ^
Hydric Soils Present? Yes • No ^ Is this Sampling Point Within a Wetiand? Yes • No ^
Remarks; No wetland indicators.
Approved by HQUSAGE 3/92
I
I
I
I
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disharbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Community ID: FWM Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disharbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disharbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Plot ID: DPIO, PPIO
Do normal circumstances exist on the site? ^ Yes Q No
Is the site significantly disharbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
VEGETATION
1. Scirpus californicus H OBL 9.
2. 10.
3. 11.
4. 12.
5. 13.
6. 14.
.7. 15.
16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Freshwater Marsh vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stt-eam, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Prhnary Indicators;
^ Inundated
^ Saturated in Upper 12 mches
• Water Marks
• Drift Lines
P~] Sediment Deposits
\~~\ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required);
Q Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neuti^ Test
Q Other (Explain m Remarks)
Remarks: Data point is at the edge of lake
SOILS
I
I
I Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes g] No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-2 sand
2-6 10 YR 3/1 sandy clay
Hydric Soil Indicators:
J Q Histosol
I 1 Histic Epipedon
• Sulfidic Odor
[~~| Aquic Moisture Regime
Q Reducing Conditions
[ I Gleyed or Low-Chroma Colors
I I Concretions
^ High Organic Content in surface layer In Sandy Soils
I [ Organic Streaking in Sandy Soils
[~~| Listed on Local Hydric Soils List
[~~] Listed on National Hydric Soils List
j~~j Other (Explain in Remarks)
I Remarks; could not dig past 6" {soil too hard). Hydric soil indicated by concentration of
high organic content.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No •
Wetland Hydrology Present? Yes 1^ No •
Hydric Soils Present? Yes 1^ No • Is this Sampling Point Within a Wetland? Yes | ^ No •
Remarks: Freshwater Marsh at edge of lake.
Approved by HQUSACE 3/92
M
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delmeation Manual)
Project/Site: Lake Calavera Date: January 31, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State; California
Do normal circumstances exist on the site? 13 Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? 13 Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? 13 Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DPll, PPll
Do normal circumstances exist on the site? 13 Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dommant Plant Species Stratum Indicator
1. Salix lasiolepis T FACW 9.
2. Baccharis salicifolia S FACW 10.
3. Picris echiodes H FAC 11.
4. Nicotiana glauca T FAC 12.
5. 13.
6. ^ 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks; Southern Willow Scrub vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks);
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available .
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators;
I I Inundated
Saturated in Upper 12 inches
Water Marks
Drift Lines
Sediment Deposits
Drainage Patterns in Wetlands
Secondary Indicators (2 or more required);
[J Oxidized Root Channels in Upper 12 Inches
Water-Stained Leaves
Local Soil Survey Data
FAC-Neutral Test
Other (Explam in Remarks)
•
•
•
•
•
•
•
I
Remarks; Data point is within lake basin.
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes I^No
Profile Description:
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-14 2.5 Y 4/2 10 YR 5/6 small, faint,
few
sandy loam
Hydric Soil Indicators:
Q Histosol Q Concretions
Q Histic Epipedon ^ High Organic Content in surface layer in Sandy Soils
[ 1 Sulfidic Odor [[] Organic Streaking m Sandy Soils
1 1 Aquic Moisture Regime Q Listed on Local Hydric Soils List
) 1 Reducing Conditions Q Listed on National Hydric Soils List
1X1 Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: Hydric soils present.
I
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I
I
I
I
I
I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No •
Wetland Hydrology Present? Yes ^ No •
Hydric Soils Present? Yes IE No • Is this Sampling Point Within a Wetland? Yes | E No •
Remarks: Southern Willow Scrub at edge of lake.
Approved by HQUSAGE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Projecl/Site:
Applicant/Owner:
Investigator:
Lake Calavera
City of Carlsbad
Vanessa A. Lee, Kara A. Altvater
Date:
County:
State:
January 31, 2002
San Diego
California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical SiUiation)? • Yes ^ No
Is the area a potential Problem Area? • Yes g] No
(If needed, explain on reverse.)
Community ID:
Transect ID:
Plot ID:
CSS
DP12, PP12
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Artemisia californica S UPL 9.
2. Baccharis salicifolia s FACW 10.
3. Baccharis pilularis s UPL U.
4. Salvia mellifera s UPL 12.
5. 13.
6. 14.
•7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 25%
Remarks; Vegetation criteria not satisfied.
HYDROLOGY
Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
Q No Recorded Data Available.
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
[~] Inundated
[~~] Saturated in Upper 12 inches
Q] Water Marks
• Drift Lines
|~] Sediment Deposits
(~] Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q] Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: No hydrology indicators
[
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes • No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-3
3-12
10 YR 4/2
10 YR 4/3
clay loam
clay loam
I
Hydric Soil Indicators:
Q Histosol
I I Histic Epipedon
• Sulfidic Odor
I i Aquic Moisture Regime
I I Reducing Conditions
] I Gleyed or Low-Chroma Colors
[~] Concretions
[~~) High Organic Content in surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
Listed on Local Hydric Soils List
Q Listed on National Hydric Soils List
Q Other (Explain in Remarks) I
I Remarks: No hydric soil indicators found.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes Q No
Wetland Hydrology Present? Yes Q No
Hydric Soils Present? Yes • No Is this Samplmg Point Within a Wetland? Yes • No
I
I
Remarks: Diegan Coastal Sage Scrub vegetation.
Approved by HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineafion Manual)
Project/Site:
Applicant/Ovifner;
Investigator;
Lake Calavera
City of Carlsbad
Vanessa A. Lee, Kara A. Altvater
Date:
County:
State:
Feb 14, 2002
San Diego
California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes 13 No
Is the area a potential Problem Area? • Yes El No
(If needed, explain on reverse.)
Community ID:
Transect ID:
Plot ID:
FWM
DP13, PP13
Dommant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Scirpis californicus s OBL 9.
2. 10.
11.
4. 12.
5. 13.
6. ^ 14. .
1. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excludmg FAC-). 100%
Remarks: Freshwater Marsh vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks);
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available,
Field Observations:
Depth of Surface Water;
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Prunary Indicators:
Q Inundated
^ Saturated in Upper 12 inches
Q Water Marks
• Drift Lines
\^ Sediment Deposits
Q] Drainage Patterns in Wetlands
Secondary Indicators (2 or more requh-ed):
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
• Local Soil Survey Data
• FAC-Neutral Test
Q] Other (Explain in Remarks)
Remarks; Hydrology indicated by saturated soils.
I
SOILS
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Map Unit Name ~ ~ ' '
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations '
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes |3 No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions Structure etc
^ I -7-5 YR 2/1 \ \ \ sandy clay
Hydric Soil Indicators:
^. Q Histosol
I I Histic Epipedon
1^ Sulfidic Odor
Q Aquic Moisture Regime
n Reducmg Condidons
^ Gleyed or Low-Chroma Colors
Q Concretions
Q High Organic Content in surface layer in Sandy Soils
• Organic Streaking in Sandy Soils
Q Listed on Local Hydric Soils List
Q Listed on Narional Hydric Soils List
Q Other (Explain in Remarks)
Remarks: Hydric soils indicated by sulfidic odor and low-chroma colors.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes lEi No U
Wetland Hydrology Present? Yes ^ No •
Hydric Soils Present? Yes ^ No • Is this Sampling Point Within a Wetland? Yes | X] No •
Remarks; Freshwater Marsh I
Approved by HQUSACE 3/92
y
DATA FORM ,
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 14, 20 02
Applicant/Owner; City of Carlsbad County: San Diego
Investigator; Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes jg] No
Is the area a potential Problem Area? • Yes H No
(If needed, explam on reverse.)
Community ID: MFS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes jg] No
Is the area a potential Problem Area? • Yes H No
(If needed, explam on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes jg] No
Is the area a potential Problem Area? • Yes H No
(If needed, explam on reverse.)
Plot ID: DP14, PP14
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes jg] No
Is the area a potential Problem Area? • Yes H No
(If needed, explam on reverse.)
VEGETATION
Dommant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Baccharis salicifolia FACW 9.
2. Baccharis pilularis NI 10.
3. Distichlis spicata FACW 11.
4. 12.
5.
6. 14.
7. 15.
16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 66%
Remarks: Mule Fat Scrub vegetation.
HYDROLOGY
^ Recorded Data (Described m Remarks):
• Stream, Lake, or Tide Gauge
Aerial Photographs
• Other
Q No Recorded Data Available ,
Field Observations;
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
j [ Inundated
Q Saturated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more requned):
• Oxidized Root Channels m Upper 12 Inches
[J Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
• Other (Explain m Remarks)
Remarks: No wetland hydrology indicators.
SOILS
Map Unit Name
(Series and Phase); Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes No
Profile Description:
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-12 2.5 Y 6/2 sandy clay loam
Hydric Soil Indicators:
^ Q Histosol Q Concretions
• Hisfic Epipedon • High Organic Content in surface layer in Sandy Soils
• Sulfidic Odor • Organic Streaking in Sandy Soils
• Aquic Moisture Regune Q Listed on Local Hydric Soils List
• Reducing Condifions Q Listed on National Hydric Soils List
'Q Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: No hydric soil indicators.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes |^ No •
Wetland Hydrology Present? Yes • No ^
Hydric Soils Present? Yes • No |^ Is this Sampling Point Within a Wetland? Yes • No ^
Remarks; Mule Fat Scrub vegetation under CDFG jurisdiction only.
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 14, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: FWM Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID;
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP15, PP15
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Baccharis salicifolia FACW 9.
2. Baccharis pilularis NI 10.
3. Cyperus eragrostis H FACW 11.
4. Ambrosia psilostachya H FAC 12.
5.
6. 14.
7. 15.
16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 75%
Remarks: Freshwater Marsh dominated by Baccharis.
HYDROLOGY
n
Recorded Data (Described m Remarks):
Q Stream, Lake, or Tide Gauge
1^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Q Inundated
^ Saturated m Upper 12 inches
• Water Marks
• Drift Lines
r~| Sediment Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Charmels m Upper 12 Inches
Q Water-Stained Leaves
[]]] Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explam m Remarks)
Remarks: Hydrology indicated by saturated soil.
SOILS I
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Map Unit Name
(Series and Phase); Las Floras loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes ^ No
Profile Description:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottle
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-14 10 YR 5/3 10 YR 5/1 many, large,
faint
clay loam
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I
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I
I
I
I
I
I
Hydric Soil Indicators:
Q Histosol
I [ Histic Epipedon
• Sulfidic Odor
Q Aquic Moisture Regime
^ Reducing Conditions
Q] Gleyed or Low-Chroma Colors
[~] Concretions
Q High Organic Content in surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
Q Listed on Local Hydric Soils List
[~] Listed on National Hydric Soils List
Q Other (Explain In Remarks)
Remarks: Saturated soils
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes 1 g] No •
Wetland Hydrology Present? Yes I ^ No •
Hydric Soils Present? Yes [ ^ No • Is this Samplmg Point Within a Wetland? Yes | El No •
Remarks; Freshwater Marsh
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 14, 2 002
Apphcant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Califomia
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: FWM Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID; DP16, PP16
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Scirpus californicus H OBL 9.
2. Distichlis spicata H FACW 10.
11.
4. 12.
5. 13.
6. " 14.
•7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Freshwater Marsh vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
• Inundated
^ Samrated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sedunent Deposits
Q Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
Local Soil Survey Data
• FAC-Neuh-al Test
n Other (Explam m Remarks) •
Remarks: Hydrology indicated by saturated soil.
SOILS
I Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? Q Yes ^ No
Profile Description;
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-14 i I 10 YR 2/1 I \ ~~ I clay
Hydric Soil Indicators:
-^^ Q Histosol
I I Histic Epipedon
• Sulfidic Odor
^ Aquic Moisture Regime
j 1 Reducing Conditions
^ Gleyed or Low-Chroma Colors
[~~] Concretions
High Organic Content m surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
[~] Listed on Local Hydric Soils List
r] Listed on National Hydric Soils List
|~~| Other (Explain in Remarks)
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Remarks: Hydric soils indicated by low-chroma colors and aquic moisture regime.
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WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ No •
Wetland Hydrology Present? - Yes ^ No •
Hydric Soils Present? Yes |^ No • Is this Sampling Point Within a Wetland? Yes No •
Remarks; Data point is within Freshwater Marsh.
Approved by HQUSACE 3/92
m DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Proiect/Site: Lake Calavera Date: Feb 14, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Califomia
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |S| No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |S| No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |S| No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Plot ID: DP17, PP17
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes |S| No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Salix lasiolepis T FACW 9.
2. Baccharis salicifolia S FACW 10.
3. Hirschfeldia incana S UPL 11.
4. Ambrosia psilostachya S FAC 12.
5. / 13.
, ——
6.
14.
7. i5.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excludmg FAC-)- 75%
Remarks:
-^•-•L^ —, "•' '
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D
E
[
E
HYDROLOGY
i
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water;
Depth to free Water in Pit
Depth of Saturated Soil;
(in.)
(in.)
(in.)
Wetland Hydrology Indicators;
Primary Indicators:
Q Inundated
Q Saturated in Upper 12 inches
• Water Marks
Q Drift Lines
Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
• Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks:
SOILS
Map Unit Name
(Series and Phase); Las Flores loamy fine sand Drainage Class; Moderately well drained
Field Observations ~ "
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes • No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concrefions, Structure, etc.
0-4
4-14
10 YR 3/2
10 YR 6/2 10 YR 3/1
Many organic
materials
Many, faint, large
Sandy clay loam
Sandy clay loam
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I
I
Hydric Soil Indicators;
•^'1 I Histosol
I I Histic Epipedon
• Sulfidic Odor
I j Aquic Moisture Regime
^ Reducing Conditions
Q Gleyed or Low-Chroma Colors
I [ Concretions
Q High Organic Content hi surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
Q Listed on Local Hydric Soils List
Q Listed on Narional Hydric Soils List
r~| Other (Explain in Remarks)
Remarks: Redoxy-morphic features in the upper 12 inches indicate hydric soils
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ISi No u
Wetland Hydrology Present? Yes M No •
Hydric Soils Present? Yes No • Is this Sampling Point Withm a Wetland? Yes • No ^
Remarks: Southern Willow Scrub vegetat ion.
Approved by HQUSACE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delmearion Manual)
Prniect/Site: Lake Calavera Date: Feb 14, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes |HI No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes |HI No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes |HI No
(If needed, explain on reverse.)
Plot ID: DP18, PP18
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes |HI No
(If needed, explain on reverse.)
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Salix lasiolepis T FACW 9.
2. 10.
3. n.
4. 12.
5. 13.
.6. 14.
'7. .15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excludmg FAC-). 100%
Remarks; Southern Willow Scrub vegetation.
r*^ — 1.1-1
HYDROLOGY
•
Recorded Data (Described in Remarks);
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available^
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
Inundated
Q Saturated in Upper 12 mches
Q Water Marks
• Drift Lmes
Q Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
• Local Soil Survey Data
• FAC-Neutral Test
n Other (Explam in Remarks)
Remarks: Hydrology indicated by drainage patterns
I
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam Drainage Class: well drained, moderately well drained
Field Observations ' '
Profile Descriotion:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottle
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-4 10 YR 2/2 clay loam
4-14 10 YR 4/2 clay loam
.
.
Hydric boil Indicators:
• Histosol
Q Histic Epipedon
• Sulfidic Odor
Q Aquic Moisture Regime
Q Reducing Conditions
• Gleyed or Low-Chroma Colors
(~~) Concretions
• High Organic Content in surface layer in Sandy Soils
• Organic Streaking m Sandy Soils
• Listed on Local Hydric Soils List
• Listed on National Hydric Soils List
• Other (Explain in Remarks)
Remarks: Soils are assumed due to predominance of FACW vegetation.
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WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ No •
Wetland Hydrology Present? - Yes ^ No •
Hydric Soils Present? Yes ^ No •
Remarks: Southern Willow Scrub.
Approved by HQUSAGE 3/92
m
m DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineafion Manual)
Project/Site:
Applicant/Owner:
Investigator:
Lake Calavera
City of Carlsbad
Vanessa A. Lee, Kara A. Altvater
Do normal circumstances exist on the site? ^ Yes
Is the site significantly disturbed (Atypical Situation)? Q Yes
Is the area a potential Problem Area? • Yes
(If needed, explain on reverse.)
• No
El No
No
Date:
County:
State:
Feb 14, 2002
San Diego
Califomia
Community ID:
Transect ID:
Plot ID;
CAM
DP19, PP19
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Distichlis spicata H FACW 9.
2. Xanthium strumarium S FAC 10.
11.
4. 12.
5. 13.
.6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Cis-montane Alkali Marsh vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
p~] Inundated
^ Saturated m Upper 12 inches
• Water Marks
• Drift Lines
Q Sediment Deposits
Drainage Patterns in Wetiands
Secondary Indicators (2 or more required):
[J Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain m Remarks)
Remarks: Hydrology indicated by saturated soils.
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes ^ No
Profile Description:
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Confrast) Texture, Concretions, Structure, etc.
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Confrast) Texture, Concretions, Structure, etc.
0-1 10 YR 3/1 clay
1-14 10 YR 5/2 sandy clay
Hydric Sod Indicators:
- Q] Histosol Q Concretions
• Histic Epipedon • High Organic Content m surface layer in Sandy Soils
• Sulfidic Odor Organic Streaking in Sandy Soils
Q Aquic Moisture Regime Q Listed on Local Hydric Soils List
Q Reducing Conditions Q Listed on National Hydric Soils List
^ Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: Hydric soils indicated by low chroma colors and organic streaking.
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WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes ^ No Q
Wetland Hydrology Present? Yes •
Hydric Soils Present? Yes IEI No • Is this Sampling Point Within a Wetiand? Yes No •
Remarks: Cis-montane Alkali Marsh.
Approved by HQUSACE 3/92
I
m
y DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
PrniectySite: Lake Calavera Date: Feb 14, 2 002
Applicant/Owner: City of Carlsbad County; San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
Plot ID: DP20, PP20
Do normal circumstances exist on the site? S Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes S No
Is the area a potential Problem Area? • Yes No
(If needed, explain on reverse.)
LI 1 1 ' "- ~"
VEGETATION
I
1. Salix lasiolepis FACW 9.
10.
11.
12.
13.
14.
7. 15.
16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100 =
Remarks: Southern Willow Scrub vegetation.
HYDROLOGY
•
Recorded Data (Described in Remarks):
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations;
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
(~] Inundated
[]] Saturated in Upper 12 inches
• Water Marks
• Drift Lines
Q Sediment Deposits
Drainage Patterns in Wetlands
Secondary Indicators (2 or more required);
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
• Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explam in Remarks)
Remarks: Hydrology indicated by drainage patterns.
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam Drainage Class; Well drained, moderately well drained
Held UtJservations
Taxonomy (Subgroup); calcic Pachic Hapioxeroiis Confirm Mapped Type? n Yes |5<] No
Profile Descrinfion:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottle
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-14 2.5 Y 7/3 10 YR 3/2 many, large,
distinct
loamy sand
Jriyoric boil Indicators:
• • —
• Histosol
r~) Histic Epipedon
• Sulfidic Odor
Q Aquic Moisture Regime
Q Reducing Conditions
^ Gleyed or Low-Chroma Colors
[J Concretions
n High Organic Content in surface layer in Sandy Soils
n Organic Streaking in Sandy Soils
• Listed on Local Hydric Soils List
• Listed on National Hydric Soils List
• Other (Explain in Remarks)
Remarks: Low-chroma colors with mottles.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes IEI No Q
Wetland Hydrology Present? Yes ^ No •
Hydric Soils Present? Yes ^ No •
Remarks: Southern Willow Scrub.
Is this Sampling Pomt Within a Wetland? Yes No •
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetiands Delineation Manual)
Project/Site; Lake Calavera Date: Feb 14, 2002
ApplicanfOwner: City of Carlsbad County; San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: NWW Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP21, PP21
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
I
I
I
VEGETATION
Dommant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Artemisia californica S NI 9.
2. Hirschfeldia incana s NI 10.
3. 11.
4. 12.
5. . 13.
6. 14.
7. .15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 0%
Remarks: No wetland vegetation at data point.
HYDROLOGY
•
Recorded Data (Described in Remarks):
[~| Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water m Pit
Depth of Saturated Soil;
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
(~~| Inundated
Q Saturated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q] Other (Explain in Remarks)
Remarks; Hydrology indicated by drainage patterns
c
SOILS
Map Unit Name
(Series and Phase); Salinas clay loam Drainage Class: well drained, moderately well drained
Field Observations
Taxonomy (Subgroup): calcic pachic Hapioxeroiis Confirm Mapped Type? • Yes No
Profile Description:
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure etc
Depth
(inches) Horizon
Matrix Color Mottle Colors Mottle
(Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure etc
0-14 2.5 Y 6/3 sandy loam
Hydric Soil Indicators;
• Histosol Q Concretions -
• ^'stic Epipedon • High Organic Content in surface layer in Sandy Soils
• Sulfidic Odor • Organic Streaking in Sandy Soils
• Aquic Moisture Regime Q Listed on Local Hydric Soils List
• Reducing Conditions Q Listed on National Hydric Soils List
• Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: No hydric soil indicators.
I
I
LHIJ||
I
I
I
I
I
I
I
I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes [I! No ^
Wetland Hydrology Present? . Yes ^ No •
Hydric Soils Present? Yes • No ^ Is this Sampling Point Within a Wetland? Yes • No ^
Remarks: Jurisdictional Non-wetland Waters of the U.S.
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetiands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 14, 2 002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Califomia
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP22, PP22
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Dommant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Juncus mexicanus H FACW 9.
2. Salix lasiolepis T FACW 10.
0. 11.
4. 12.
5. ; 13.
6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 100%
Remarks: Southern Willow Scrub vegetation.
HYDROLOGY
^ Recorded Data (Described in Remarks):
• Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
Q] No Recorded Data Available ^
Field Observations:
Depth of Surface Water:
Depth to free Water m Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
|~] Inundated
^ Saturated in Upper 12 inches
Water Marks
• Drift Lines
Q Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
^ Oxidized Root Channels m Upper 12 Inches
Q Water-Stained Leaves
• Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks: Hydrology indicated by saturated soils and drainage patterns.
SOILS
Map Unit Name • —i
(Series and Phase): Salinas clay loam Drainacrp riat:<:- IT TT ^ • ^
^ ^ -i-'-'aiu urainage Uiass. well drained, moderately well drained
Field Observations
Taxonomy (Subgroup): Calcic Pachic Hapioxeroiis Confirm Mapped Type? • Yes I^No
Profile Descrio
Depth
(inches)
tion:
Mah-ix Color Mottle Colors Mottle
Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture CnnrrPtinn. Stmnt^r. .t.
0-14 2.5 Y 4/1 clay
Jdydric boil Indicators: —
-^{J Histosol • Concretions
• Histic Epipedon • High Organic Content in surface layer in Sandy Soils
• Sulfidic Odor • Organic Streaking in Sandy Soils
1^ Aquic Moisture Regime • Listed on Local Hydric Soils List
^ Reducing Conditions • Listed on National Hydric Soils List
(3 Gleyed or Low-Chroma Colors Q Other (Explain in Remarks)
Remarks: Hydric soil indicated by low chroma soils and aquic moisture regime.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes 1^ 3 No •
Wetland Hydrology Present? - Yes ^ 0 No •
Hydric Soils Present? Yes 1^ 3 No • Is this Sampling Point Within a Wetiand? Yes | ^ No •
Remarks: Southern Willow Scrub.
Approved by HQUSACE 3/92
ii
m
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site:
Applicant/Owner:
Investigator;
Lake Calavera
City of Carlsbad
Vanessa A. Lee, Kara A. Altvater
Date:
County:
State:
Feb 14, 2002
San Diego
California
Do normal circumstances exist on the site? 13 Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes (S| No
(If needed, explain on reverse.)
Community ID;
Transect ID:
Plot ID:
SWS
DP23, PP2 3
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Washingtonia filifera T FACW 9.
2. Salix lucida lasiandra T OBL 10.
3. 11.
4. 12.
5. / 13.
6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excludmg FAC-). 100%
Remarks; Southern Willow Scrub vegetation.
-J,,
HYDROLOGY
•
Recorded Data (Described in Remarks);
Q Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Deptii to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
I [ Inundated
Q Saturated in Upper 12 inches
• Water Marks
• Drift Lines
[~~| Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
• Oxidized Root Channels in Upper 12 Inches
[2 Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
Q Other (Explain in Remarks)
Remarks; Hydrology indicated by drainage patterns
SOILS
t
I
I
I
I
Map Unit Name
(Series and Phase): Salinas clay loam Drainage Class: well drained, moderately well drained
Field Observations ~ ' ~~"
Taxonomy (Subgroup): calcic Pachic Hapioxeroiis Confirm Mapped Type? Q Yes No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast)
0-14 10 YR 3/2 10 YR 5/4 many, distinct,
medium
Texture, Concretions, Structure, etc.
loam
Hydric Soil Indicators;
im Histosol
I I Histic Epipedon
• Sulfidic Odor
I I Aquic Moisture Regime
\ I Reducing Conditions
^ Gleyed or Low-Chroma Colors
Concretions
• High Organic Content in surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
[~] Listed on Local Hydric Soils List
• Listed on National Hydric Soils List
I I Other (Explain in Remarks)
I
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I
I
I
I
I
I
Remarks: Hydric soil indicated by low chroma colors and mottles.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes IE No •
Wetland Hydrology Present? Yes IE No •
Hydric Soils Present? Yes IE No • Is this Sampling Point Within a Wetland? Yes | E No •
Remarks: Southern Willow Scrub with palms.
Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delmeation Manual)
Project/Site: Lake Calavera Date: Feb 15, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Ca 1 i f orni a
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes [g] No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID: SWS Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes [g] No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes [g] No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP24, PP24
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes [g] No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Scirpis californicus H OBL 9.
2. Salix lasiolepis T FACW 10.
3. Hirschfeldia incana H NI 11.
4. 12.
5. >: 13.
.6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 66%
Remarks: Southern Willow Scriib vegetation with Freshwater Marsh understory.
HYDROLOGY
•
Recorded Data (Described in Remarks):
r~1 Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to fi-ee Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
I I Inundated
|~] Saturated in Upper 12 inches
• Water Marks
• Drift Lines
Q] Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
I I Oxidized Root Channels in Upper 12 Inches
Q Water-Stained Leaves
Q Local Soil Survey Data
• FAC-Neutral Test
[J Other (Explain in Remarks)
Remarks: Hydrology indicated by drainage patterns.
SOILS
I Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderately well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? D Yes No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
0-12 2.5 Y 2.5/1 clay
I Hydric Soil Indicators;
-^•Q Histosol
Q Histic Epipedon
• Sulfidic Odor
I I Aquic Moisture Regime
Q Reducing Conditions
M Gleyed or Low-Chroma Colors
[~] Concretions
[31 High Organic Content in surface layer in Sandy Soils
f~| Organic Streaking in Sandy Soils
I I Listed on Local Hydric Soils List
[3] Listed on National Hydric Soils List
f~| Other (Explain in Remarks)
Remarks: Hydric soil indicated by low chroma colors
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes g ^ No •
Wetland Hydrology Present? Yes ^ 0 No •
Hydric Soils Present? Yes g ^ No • Is this Sampling Point Within a Wetland? Yes | E No •
Remarks: Southern Willow Scrub.
I
Approved by HQUSAGE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Lake Calavera Project/Site:
Applicant/Owner: City of Carlsbad
Investigator: Vanessa A. Lee, Kara A. Altvater
Date:
County:
State:
Feb 15, 2002
San Diego
California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID:
Transect ID;
Plot ID;
NWW
DP25, PP25
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Bromus hordeaceus H Nl 9.
2. Bromus madritensis
rubens
H NI 10.
3. Bromus diandrus H NI 11.
4. 12.
5; 13.
6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 0%
Remarks: No wetland vegetation within drainage.
A-
HYDROLOGY
•
Recorded Data (Described in Remarks):
[~1 Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
j ] Inundated
r~| Saturated in Upper 12 inches
• Water Marks
• Drift Lines
|~[ Sediment Deposits
^ Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
Q Oxidized Root Channels in Upper 12 Inches
Q] Water-Stained Leaves
[3 Local Soil Survey Data
• FAC-Neutt-al Test ,
Other (Explam in Remarks)
Remarks: Hydrology indicated by drainage patterns
to
I
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: moderately well drained
Field Observations " ~
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? • Yes ^ No
Profile Description;
Depth Matrbc Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texture, Concretions, Structure, etc.
sand C
c
0-14
Hydric Soil Indicators;
r~] Histosol
[~] Histic Epipedon
• Sulfidic Odor
f~l Aquic Moisture Regime
Q Reducmg Conditions
r~l Gleyed or Low-Chroma Colors
I [ Concretions
• High Organic Content in surface layer in Sandy Soils
Q Organic Streaking in Sandy Soils
Q Listed on Local Hydric Soils List
Q Listed on National Hydric Soils List
Q Otiier (Explain in Remarks)
Remarks: No hydric soil indicators.
I
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I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes CH No
Wetiand Hydrology Present? Yes lEI No •
Hydric Soils Present? Yes • No ^ Is this Samplmg Pomt Within a Wetland? Yes • No g]
Remarks: Jurisdictional Non-wetland Waters along trail.
Approved by HQUSAGE 3/92
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wedands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 15, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: California
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantiy disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Community ID: SMC Do normal circumstances exist on the site? ^ Yes • No
Is the site significantiy disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantiy disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
Plot ID: DP26, PP26
Do normal circumstances exist on the site? ^ Yes • No
Is the site significantiy disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes H No
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stramm Indicator
1. Juncus dubius H FACW 9.
2. Heteromeles arbutifolia S NI 10.
3. Leymus condensatus S FACU 11.
4. 12.
5. 13.
6. 14.
7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 3 3 %
Remarks: Wetland vegetation criteria not satisfied. Data point bordering Southern Mixed
HYDROLOGY
•
Recorded Data (Described in Remarks):
n Stream, Lake, or Tide Gauge
S Aerial Photographs
• Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil:
(in.)
(in.)
(in.)
Wetiand Hydrology Indicators;
Primary Indicators:
• Inundated
Saturated in Upper 12 inches
Water Marks
Drift Lines
Sediment Deposits
Drainage Patterns in Wetlands
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)
•
•
•
•
•
•
•
•
•
Remarks: No hydrology indicators
m
in
SOILS
Map Unit Name
(Series and Phase): Las Flores loamy fine sand Drainage Class: Moderatelv well drained
Field Observations
Taxonomy (Subgroup): Haplic Natrixeralfs Confirm Mapped Type? Fl Yes No
Profile Description:
Depth
(inches) Horizon
Matrix Color
(Munsell Moist)
Mottle Colors
(Munsell Moist)
Mottie
(Abundance/Contrast) Texture, Concretions, Structure, etc.
0-2 10 YR 3/2 sandy clay loam
2-14 10 YR 5/2 sandy clav loam
— 'i -*
Hydric Soil Indicators:
• Histosol
D Histic Epipedon
• Sulfidic Odor
n Aquic Moisture Regime
n Reducing Conditions
• Gleyed or Low-Chroma Colors
n 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)
Remarks: No indicators of hydric soils.
m
I
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes • No
Wetiand Hydrology Present? Yes • No [EI
Hydric Soils Present? Yes • No ^ Is this Sampling Point Within a Wetiand? Yes • No ^
Remarks: Data point located at boundary of Southern Willow Scrub and Southern Mixed Chaparral
vegetation. Dominant plant species however, are predominately upland species.
I
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Approved by HQUSACE 3/92
DATAFORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Lake Calavera Date: Feb 15, 2002
Applicant/Owner: City of Carlsbad County: San Diego
Investigator: Vanessa A. Lee, Kara A. Altvater State: Califomia
Do normal circumstances exist on the site? |^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Community ID; CLORF Do normal circumstances exist on the site? |^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Transect ID:
Do normal circumstances exist on the site? |^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
Plot ID: DP2 7, PP2 7
Do normal circumstances exist on the site? |^ Yes • No
Is the site significantly disturbed (Atypical Situation)? • Yes ^ No
Is the area a potential Problem Area? • Yes ^ No
(If needed, explain on reverse.)
I
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VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Quercus agrifolia T NI 9.
2. 10.
3. 11.
4. 12.
5. 13.
6. 14.
.7. 15.
8. 16.
Percentage of Dominant Species that are OBL, FACW or FAC (excluding FAC-). 0%
Remarks; Coast Live Oak Riparian Forest near streambed. No understory vegetation possibly
because of fire, but surrounding plants are upland species such as Marah macrocarpus,
Toyon, etc. Therefore, wetland vegetation is not expected to have occured prior to fire.
[1 HYDROLOGY
f
•
Recorded Data (Described in Remarks):
[~] Stream, Lake, or Tide Gauge
^ Aerial Photographs
• Other
No Recorded Data Available.
Field Observations:
Depth of Surface Water:
Depth to free Water in Pit
Depth of Saturated Soil;
(in.)
(in.)
(in.)
Wetland Hydrology Indicators:
Primary Indicators:
j i Inundated
j~| Saturated in Upper 12 inches
• Water Marks
• Drift Lines
I I Sediment Deposits
[~) Drainage Patterns in Wetlands
Secondary Indicators (2 or more required):
[3] Oxidized Root Channels m Upper 12 Inches
P] Water-Stained Leaves
I I Local Soil Survey Data
• FAC-Neutral Test
\ I Other (Explain in Remarks)
Remarks; No hydrology indicators
SOILS
Map Unit Name
(Series and Phase): Salinas clay loam Drainage Class: well drained, moderately well drained
Field Observations
Taxonomy (Subgroup): calcic Pachic Hapioxeroiis Confirm Mapped Type? • Yes ^ No
Profile Description:
Depth Matrix Color Mottle Colors Mottle
(inches) Horizon (Munsell Moist) (Munsell Moist) (Abundance/Contrast) Texmre, Concretions, Structure, etc.
0-12 10 YR 3/2 loam
Hydric Soil Indicators:
-.-'Q Histosol
I I Histic Epipedon
• Sulfidic Odor
I 1 Aquic Moisture Regime
I I Reducing Conditions
Q Gleyed or Low-Chroma Colors
Q Concretions
Q High Organic Content in surface layer in Sandy Soils
[~] Organic Streaking in Sandy Soils
I I Listed on Local Hydric Soils List
Listed on National Hydric Soils List
|~~[ Other (Explain in Remarks)
I
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Remarks: No hydric soil indicators.
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes CH No ^
Wetiand Hydrology Present? Yes • No ^
Hydric Soils Present? Yes • No ^ Is this Sampling Point Within a Wetland? Yes • No
Remarks: Coast Live Oak Riparian Forest.
Approved by HQUSACE 3/92
iMke Calavera
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I APPENDIX 4. WETLAND PHOTO POINTS
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Merkel & As.sociates, Inc. #01-068-01
•i^ Lake Calavera
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APPENDIX 5. SENSITIVE SPECIES - POTENTIAL PRESENCE AND STATUS
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Merkel & Associates. Inc. # 01-068-01
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APPENDIX 5A. SENSITIVE SPECIES (PLANTS) - POTENTIAL PRESENCE AIVD STATUS
The following abbreviations are used in this table; FE = Federally Endangered, FT = Federally Threatened, FSC = Federal Species of Special Concern, SE =
Califomia ESA Endangered, NE = MSCP Narrow Endemic Species.
• Habitat codes are synonymous to those used in the Califomia Native Plant Society's Inventory of Rare and Endangered Vascular Plants of Califomia (Skinner
and Pavlik 1994). CCFrs = closed-cone conifer forest, Chprl = chaparral, CoScr = coastal scrub, CmWld = cismontane woodland, MshSw = marshes and
swamps, Medws = meadows and seeps, RpWld = riparian woodland, VFGrs = valley and foothill grassland, VnPls = vemal pools. For habitat characterization
see Skinner and Pavlik 1994.
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Acanthomintha
ilicifolia
San Diego Thom-
mint
Chprl, CoScr, VFGrs,
VnPls/clay FT SE IB Covered -
Low. Typical cracked and friable
clay soils associated with this
species are poorly developed on-
site.
Adolphia californica Califomia Adolphia Chprl, CoScr None None 2 Not covered YES
Various populations distributed
throi^out m^ed sage scmb.
Found above APE boundary.
Ambrosia pumila San Diego Ambrosia CoScr,RpWld FE None IB Covered ~ Low. H^itat poorly developed on-
site.
Arctostapfylos
glandulosa ssp.
crassifolia
Del Mar Manzanita Chprl FE None IB Covered ~ Low to none. Northeast of known
range; chaparral sparse on-site.
Arctostaphylos
rainbowensis Rainbow Manzanita Chprl None None IB Not covered -None. Well outside of historical
range.
Baccharis vanessae Encinitas Baccharis Chprl (sandstone) FT SE IB Covered -Low to none. Well outside
historical range.
Brodiaea filifolia Thread-leaf Brodiaea Medws, VFGrs,
VnPls/clay FT CE IB Covered -
Moderate in study area but low to
none in construction limits given
disturbed nature of grasslands.
Population known from
approximately 1,500 feet south of
the eastern end of study area.
Brodiaea orcutti Orcutt's Brodiaea
CCFrs, Chprl, CmWld,
Medws, VFGrs,
VnPls/clay
None None IB Covered -Moderate. Similar habitat
requirements of B. filifolia.
Caulanthus
heterophyllus var.
pseudosimulans
Buck's Jewelflower Chprl, CoScr None None
Listed but
waiting
code.
Not covered Low to none. Well southwest of
known range.
Ceanothus
verrucosus
Wart-stemmed
Ceanothus Chprl FSC None 2 Covered -Low to none. Suitable habitat
limited on-site.
Centromadia
pungens ssp. laevis Smooth Tarplant VFGrs FSC None IB Not covered -Low to none. Well outside known
range.
CU 11 it II
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Chamaebatia
australis
Southern Mountain
Misery Chprl None None 4 Not covered --None. No suitable habitat present
on-sile.
Chorizanthe
orcuttiana Orcutt's Spineflower CoScr FE CE IB Covered --Not expected, north of known
range.
Comarostaphylis
diversifolia ssp.
diversifolia
Summer-Holly Chprl FSC None IB Covered --Low. Suitable habitat limited on -
site.
Convolvulus
simulans
Smaii-flowered
Morning Glory Chprl (openings) None None 4 Not covered --Moderate. Friable clay soils poorly
developed on-site.
Corethrogyne
fitaginifolia var.
linifolia
Del Mar Sand Aster CoScr, Chprl. VFGrs None None IB Covered --Low. Northeast of known range.
Deinandra
paniculata Paniculate Tarplant VFGrs, CoScr
(openings) None None 4 Not covered Low to none. Outside historical
range.
Dichondra
occidentalis Western Dichondra Chprl, CoScr None None 4 Not covered YES
Present on-site in hmiled numbers
in sage scrub understoiy;
population might show resurgence
if site burned. Found above APE
boundary.
Dudleya viscida Sticky Dudleya Chprl, CoScr (steep
north facing slopes) FSC None 4 Covered --Not expected, no suitable habitat
present on-site.
Dudleya
blochmaniae ssp.
blochmaniae
Blochman's Dudleya CoScr FSC CE IB Covered --Not expected, generally found
closer to beaches
Eryngium
aristulatum ssp.
parishii
San Diego Button
Celery VnPIs FE SE IB Not covered -Low to none. No vemal pools
present on-sile.
Euphorbia misera Cliff Spurge CoScr None None 2 Covered Low to none. Conspicuous species
not observed.
Ferocactus
viridescens
San Diego Barrel
Cactus Chprl, CoScr FSC None 2 Covered --Low. Species searched for, not
found.
Fritillaria biflora
var. biflora Chocolate Lily Chprl, CoScr,
VFGrs/clay None None Unlisted Not covered --Low. Presently not CEQA
sensitive.
Githopsis diffusa ssp.
filicaulis
Mission Canyon
Blue-Cup Chprl (openings) FSC None 3 Not covered --Low. Limited habitat present on-
site.
mz3 dl WTM
Scientific Name Common Name Habitat* Federal
Status
California
Status cms Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Harpagonella
palmeri
Palmer's Grappling
Hook
Chprl, CoScr,
VFGrs/clay None None 4 Not covered --
Moderate. Potentially present in
low numbers in mesic sage scrub
swales.
Hazardia orcuttii Orcutt's Hazardia Chpri FSC Candidate IB Covered --Not expected. Well north of sole
U.S. population
Holocarplui virgata Graceful Tarplant VFGrs FSC None 4 Not covered -Moderate. Species searched for,
not found.
Horkelia truncata Ramona Hoilcelia Chprl, CmWld/
clay None None IB None --Not expected. Lack of suitable
habitat on project site.
Isocoma menzeisii
var. decumbens
Decumbent
Goldenbush CoScrs None None lb Not covered --
High. Some individuals of
Isocoma complex likely present on
clay substrates; not botanically
significant.
Iva hayesiana San Diego Marsh-
elder
RpWld
(creeks/streambeds) FSC None 2 Covered --Low. Near northern edge of known
range.
Juncus acutus ssp.
leopoldii
Southwestern Spiny
Rush MshSw (coastal salt) None None 4 Not covered YES
Present in several drainages; not
botanically significant. Found
above APE boundary.
Machaeranthera
juncea
Rush-like
Bristleweed Chpri, CoScr None None 4 Not covered --Not expected. Well west of known
range
Microseris douglasii Small-flowered
Microseris VFGrs (clay) None None 4 Not Covered --Moderate. Limited habitat present
on-site.
Muilla clevelandii San Diego
Goldenstar
Chpri, CoScr
(openings) FSC None IB Covered --Low to none. Near extreme
northern end of known range.
Myosurus minimus
ssp. apus Little Mousetail VnPls FSC None 3 Not covered --Low to none. No vemal pools or
vemal swales on-site.
Navarretia fossalis Spreading Navarretia VnPls FT None IB Not covered --Low to none. No vemal pools or
vemal swales on-site.
Orcuttia californica Califomia Orcutt
Grass VnPls FE CE IB Covered --Low to none. No vemal pools or
vemal swales on-site.
Polygala cornuta ssp.
fishiae Fish's Milkwort Chpri, CmWld, RpWld None None 4 Not covered --Not expected. Lack of suitable
habitat on project site
Quercus dumosa Nuttall's Scrub Oak Chpri FSC None IB Not covered --
Low, near interface of Q. dumosa
and Q. berberidifolia populations;
chaparral poorly developed on-site.
Quercus engelmanni Engelmann Oak Chpri, CmWld,
RpWld, VFGr^ None None 4 Covered -Conspicuous species not found
Selaginella
cinerascens Ashy-spike Moss Chpri, CoScr None None 4 Not covered YES Present but not CEQA significant.
Found above APE boundary.
Tetracoccus dioicus Parry's Tetracoccus Chprl, CoScr None None IB Covered --Not expected. Habitat not present.
K: J II f 1 m d El r i r i t 1 t J I I
Scientific Name Common Name Habitat* Federal
Status
California
Status
CNPS Carlsbad
Subarea Plan
Present Probability of Occurrence/
Reason for Absence
Viguiera laciniata San Diego County
Viguiera CoScr None None 4 Not covered --
Low. The site is generally outside
of natural range of species, but now
spreading in region via introduced
hydroseed mixes.
mzM i 1 r 1 11 11 II
APPENDIX 5B. SENSITIVE SPECIES (ANIMALS) - POTENTIAL PRESENCE AND STATUS
The following abbreviations are used throughout the table; FE = Federally Endangered, FT = Federally Threatened, CSC = CDFG Species of Special Concern;
SA = CDFG Special Animal, SE = Califomia ESA Endangered, . ST = Califomia ESA Threatened. The abbreviation, FSC, indicates "Federal Species of
Concern". This is a "term of art" for former Category 2 species whose conservation status is of concern to the USFWS but for which no official status has been
designated. It is provided here for informational purposes only.
Common Name Scientific Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
Quino Checkerspot
Butterfly
Etdphydryas editha quino Open grassland and openii^ within
shrub h^itats that support Dwarf
Plantain {Plantago erecta)
FE SA Not Covered Not
expected
Low. Outside of current known
range.
Harbison's Dun Skipper Etphyes vestris harbisoni Oak woodlands, riparian woodlands,
and riparian scrub.
FSC Covered Not
expected
Moderate. Host plant present
upstream of APE.
Hermes Copper Lycaena hermes Openings in chaparral, associated
with the larval host plant Spiny
Redberry (Rhamnus crocea), adults
feed on nectar from Flat-top
Buckwheat
FSC SA Covered Not
expected
Low. Site is generally northwest
of current known range.
Salt Marsh Skipper Panoquina errans Forces in coastal salt marsh None None Covered Potentially
present
Low. May occupy brackish
marsh habitat near comer of El
Camino Real and Tamarack. High
quality habitat surrounds Agua
Hedionda Lagoon.
Riverside Fairy Shrimp Streptocephalus woottoni Lives in deeper, longer sustaining
vemal pools
FE None Covered Not
expected
None. Lack of vemal pool
habitat
San Diego Fairy Shrimp Branchinecta
sandiegoensis
Lives in vemal pools FE None Covered Not
expected
None. Lack of vernal pool
habitat.
Arroyo Toad Bufo californicus Shallow pools, open sand, and gravel
flood terraces of intermittent to
perennial streams.
FE CSC,
Protected
Covered Not
expected
None. Lack of vemal pool
habitat.
Westem Spadefoot Toad Scaphiopus hammondii Sandy or gravelly soil in grasslands,
sage scrub, open chaparral, and pine-
oak woodlands; grasslands with
shallow temporary pools are optimal
FSC CSC,
Protected
Not Covered Potentially
present.
Low. Potentially present on-site
in limited numbers in grassy areas
.and sage scrub
Califomia Red-legged
Frog
Rana aurora Quiet permanent stream pools,
marshes, and ponds
FT CSC,
Protected
Not Covered Not
expected
None. Species is likely extirpated
from southern Califomia.
Southwestern Pond Turtle Clemmys marmorata
pallida
Quiet permanent stream pools, and
ponds
FSC CSC Covered Potentially
present
Moderate. Lake mj^ provide
marginal habitat but tacks suitable
haul-out sites. Species on vei^e of
extirpation in area.
Kij Ell cri r 1 1^ J I I
Common Name Scientific Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
San Diego Homed Lizard Phrynosoma coronatum
blainvillii
Chaparral, sage scrub, oak
woodlands, and grasslands;
sometimes occurs along seldom used
dirt roads where native ant species
are prevalent
FSC CSC,
Protected
Covered Potentially
present
Moderate. Fair quality habitat for
this species.
Coronado Skink Eumeces skiltonianus
interparietalis
Variety of habitats including
grasslands, sage scrub, and various
woodlands including oak, pine,
juniper, and riparian
FSC CSC None Potentially
present
High. Fair quality habitat for this
species present.
Orangethroat Whiptail Cnemidophorus
hyperythrus
Open sage scrub and chaparral,
prefers sandy areas with patches of
brush and rocks.
FSC CSC,
Protected
Covered Potentially
present
High. Fair quality habitat for this
species present.
Coastal Westem Whiptail Cnemidophorus tigris
multiscutatus
Open sage scrub, chaparral, and
wooded areas. Avoids dense
grassland and heavy vegetation
FSC SA None Potentially
present
Moderate. Fair quality habitat for
this species present
Coastal Rosy Boa Lichanura trivirgata
roseofusca
Rocky outcrop areas within
chaparral and sage scrub
FSC SA None Potentially
present
Low. Rocky terrain preferred by
this species poorly represented
on-site.
Two-striped Garter Snake Thamnophis hammondi Associated with semi-permanent and
permanent bodies of water in a
variety of habitats; requires a
relatively dense riparian border
None CSC.
Protected
None Potentially
present
Moderate. Lake and adjoining
riparian area provide habitat.
Northern Red Diamond
Rattlesnake
Crotalus ruber ruber Rocky outcrops and areas of heavy
brush or rugged terrain in chaparral,
sage scrub, or desert scmb on both
coastal and desert slopes, usually
below 4000 feet
FSC CSC None Potentially
present
High. The site supports habitat
for this species in sage scrub
although rocky outcrops are few.
Northem boundary of subspecies.
White-tailed Kite Elanus leucurus Grasslands, agricultural fields, and
open habitats with areas of dense
deciduous trees for nesting
None SA, Fully
Protected
None Present Expected lo regularly hunt on-
site; loss of habitat will result in
cumulative regional impact for
this species
Golden Eagle Aquila chrysaetos Nests in cliffs (or trees), found in
generally mountainous or hilly
terrain
None CSC, Fully
Protected
Covered Potentially
present
Low. Urbanization of area has
eliminated isolation required for
nesting. Occasional wintering
individuals may forage over open
terrain in area..
American Peregrine Falcon Falco peregrinus anatum Forages generally near coastal
wetlands
FE CE Covered Potentially
present
Low. Somewhat tolerant of
urbanization but inaccessible sites
required for nesting. Most likely
would occur as migrant.
Sharp-shinned Hawk Accipiter striatus Mixed woodlands near open areas,
prefers but not restricted to riparian
habitats
None CSC None Potentially
present
seasonally
High. Potential for sporadic
occurrence in winter, nests
outside of region.
wi~M ciri 11 1 f 1 I I I I
Common Name Scientific Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
Cooper's Hawk Accipiter cooperii Oak, riparian deciduous or other
woodland habitats usually near water
None CSC Covered Present. Limited occurrence with nesting
possible in vicinity.
Northem Harrier Circus cyaneus Forages over marsh, open sage scrub
and grassland
None CSC Covered Present At least seasonally hunts open
terrain on-site; loss of habitat will
result in cumulative regional
impact for this species.
Osprey Pandion haliaetus Forages over lagoons, bays, and
lakes; primarily hunting for fish
None CSC Covered Potentially
present
Low. Forages at Agua Hedionda
Lagoon and may occasionally
over-fly Calavera Lake in
foraging or as migrant.
Loggerhead Shrike Lanius ludovicianus Found within grassland or open
habitats with bare ground and sparse
shrub and/or tree cover for nesting
and perching
FSC CSC None Present Site is disturbed and supports fair
to good quality open foraging
habitat for this species.
Elegant Tern Sterna elegans Forages in bays, lagoons, ocean None CSC Covered Not
Expected
None. Coastal species
Califomia Least Tem Sterna antillarum browni Forages in bays, lagoons, ocean None CSC Covered Not
Expected
None. Coastal species
Califomia Brown Pelican Pelecanus occidentalis
californicus
Forages over open salt water FE CE Covered Not
Expected
None. Coastal species
Long-billed Curlew Numenius americanus Forages within coastal salt marsh None CSC Covered Not
Expected
None. Coastal species
Tricolored Blackbird Agelaius tricolor Typically found near ponds in region None CSC Covered Potentially
present
Moderate. May forage
occasionally on-site as migrant
along primary creek near cattails.
Generally requires more extensive
marshes for nesting. Limited
potential for nesting.
Light-footed Clapper Rail Rallus longirostris levipes Sait marsh; typically in stands of
pickleweed and Spartina foliosa
FE CE Covered Not
Expected
None. Coastal species. Requires
extensive salt or brackish
marshes. Present in low numbers
in Agua Hedionda Lagoon.
Westem Snowy Plover Charadrius alexandrinus
nivosus
Forages along open beaches and
expanses of lagoon devoid of
substantial vegetation
FT CSC Covered Not
Expected
None. Coastal species. Requires
open to sparsely covered beaches.
White-faced Ibis Plegadis chihi Forages near wetlands and in
brackish marsh/salt marsh
None CSC Covered Potentially
present
Low. May rarely forage in
wetlands on-site possibly as
migrant or winter visitor.
Least Bell's Vireo Vireo bellii pusillus Willow riparian with dense
undergrowth, typically early
successional habitat
FE SA,SE Covered Potentially
present
seasonally
Moderate. Willow riparian on-
site is adequate for nesting but
younger denser stands generally
preferred. May forage on-site as
r:^ di r i t i i i
Common Name Scientific Name Habitat Federal
Status
California
SUtus
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
migrant.
Califomia Homed Lark Eremophila alpestris actio Grasslands, disturbed areas and open
habitats with sparse, low vegetation
None CSC None Present Good open terrain habitat exists
on-site for migrants as well as
nesting.
Burrowing Owl Speotyto cunicularia
hypugaea
Hunts open terrain generally with
burrow at a slight elevational rise
None CSC Covered Potentially
present
Low, most likely as migrant or
wintering. Suitable nesting
habitat compromised by heavy
human use.
Califomia Gnatcatcher Polioptila califoniica
californica
Various stages ofArtemi.'tia
califoniica-dommated sage scrub
FT CSC Covered Present Male/female pair and additional
male observed. Presence
significant.
Westem Bluebird Sialia mexicana Open woodlands, farmlands, and
orchards
None None Covered Potentially
present
seasonally
Low. May occur on-site in
limited numbers during migration
or wintering.
Yellow Warbler Dendroica petechia Older willow riparian None CSC None Potentially
present
seasonally
Moderate. Willow riparian on-
site is of marginal height for
nesting. May forage on-site as
migrant.
Yellow-breasted Chat Icteria virens Willow riparian with dense
undergrowth
None CSC Covered Potentially
present
seasonally
Moderate. Willow riparian on-
.site is adequate for nesting but
younger denser stands generally
preferred. May forage on-site as
migrant.
Cactus Wren Campylorhynchus
brunneicapillus cousei
Areas of sage scrub with robust
stands of prickly pear and cholla
None CSC Covered Not
expected
None. Requires substantial stands
of cacti for nesting.. Such stands
are non-existent on-site.
Southern Califomia
Rufous-crowned Sparrow
Aimophila ruficeps
canescens
Rocky hillsides supponing sparse,
low scrub or chaparral, sometimes
mixed with grasses
FSC CSC Covered Present Present in sage scrub habitat.
Species still well distributed in
San Diego County
Bell's Sage Sparrow Amphispiza belli belli Chapairal and dense sage scmb FSC CSC Covered Potentially
present
Low. Site is relatively disturbed
and supports low quality habitat
for this species.
Large-billed Savannah
Sparrow
Passercu lus sai idwichensis
rostratus
Forages at edge of bays, lagoons,
ocean; typically near pickleweed
None CE Covered Not
expected
None. Coa-stal species. Requires
extensive sait marsh habitat
Belding's Savannah
Sparrow
Passerculus sandwichensis
beldingi
Forages at edge of bays, lagoons;
typically near pickleweed
None CE Covered Not
Expected
None. Coa.stal species. Requires
extensive salt marsh habitat.
Southwestern Willow
Flycatcher
Empidonax trailtii extimus Willow riparian with both dense
undergrowth and developed upper-
story.
FE CSC Covered Potentially
present
seasonally
Low. Habitat on-site not
extensive enough for nesting.
May forage on-site as migrant.
m El 1. J t^ l t^i ^ i i i
Common Name Scientific Name Habitat Federal
Status
California
Status
Carlsbad
Subarea
Plan
On-site
Status
Probability of
Occurrence/Reason for
Absence
Mountain Lion Felis concolor Found in areas of extensive dense
native vegetation
Calif.
Regulated
Covered Not
expected
Low. The site probably now lies
outside the range of any hons due
to peripheral urt»an development
Southern Mule Deer Odocoileus hemionus
fuliginata
Found in areas of extensive dense
native vegetation
None Calif.
Regulated
Covered Expected Still present in tow numbers in
area; likely to become extirpated
due to peripheral urban
development in near future.
San Diego Black-tailed
Jackrabbit
Lepus californicus
bennellii
Relatively open chaparral and sage
scrub and grasslands
FSC CSC None Potentially
present
High. Site supports some suitable
quality habitat for this species.
Dulzura Califomia Pocket
Mouse
Perognalhus longimembris
pacific us
Found in areas of fine sandy ground
within Coastal Sage Scrub
FSC CSC None Not
expected
Low. Site is relatively disturbed
and suppons low quality habitat
for this species.
Northwestem San Diego
Pocket Mouse
Chaetodipus fallax fallax Found in Coastal Sage Scmb FSC CSC None Potentially
present
Moderate. Site supports fair
quality habitat for this species.
Stephen's Kangaroo Rat Dipodomys Stephen si Areas of sparse vegetation primarily
grasslands, but may occur in sage
scmb or disturtied areas
FE SA,ST None Not
expected
Low. Site is disturbed and lies
southwest of known range of this
species.
San Diego Desert Woodrat Neotoma lepida intermedia Chaparral, particularly abundant in
areas of rock outcrops
FSC CSC None Potentially
present
Site supports suitable habitat for
this species.
Lake Calavera
APPENDIX 1. FLORAL CHECKLIST OF SPECIES OBSERVED
Habitat Types:
I
A = Cis-montane Alkali Marsh o = Open Water
F = Coastal and Valley Freshwater Marsh R = Southern Coast Live Oak Riparian Forest
S = Coastal Sage-Chaparral Scrub C = Southern Mixed Chaparral
B = Coyote Brush Scrub w = : Southern Willow Scrub
D = Diegan Coastal Sage Scrub u = Urban/Developed
X = Disturbed Land v = Valley Needlegrass Grassland
M = Mule Fat Scrub
N = Non-native Grassland
E = Non-native Vegetation (Exotic)
* denotes non-native plant taxa
Merkel & Associates, Inc. # 01-068-01 A-J-l
Lake Calavera
Scientific Name Coimnon Name Habitat
CRYPTOGAMS
Pentagramma triangularis (Kaulf.)Yats. ssp. viscosa (Eaton)Yats.
Silverback Fern R
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DICOTYLEDONS
Aizoaceae - Carpet-weed Family
*Carpobrotus edulis (Molina)N.E. Brit.
Anacardiaceae - Sumac Family
Malosma laurina (Torr. & Gray)Abrams
Rhus integrifolia (Nutt.)Benth. & Hook.
Toxicodendron diversilobum (Torrey & Gray)Greene
Apiaceae - Carrot Family
^Apium graveolens h.
*Conium maculatum L.
^Foeniculum vulgare Mill.
Sanicula arguta (Torrey & Gray)Coult. & Rose
Sanicula crassicaulis DC.
Asteraceae - Sunflower Family
Hottentot-Fig
Laurel Sumac D
Lemonadeberry D
Western Poison Oak R
Celery W
Common Poison Hemlock W
Fennel X
Sharp-tooth Sanicle V
Pacific Sanicle V
Ambrosia psilostacfiya DC. Western Ragweed M
Artemisia californica Less. California Sagebrush D
Baccharis pilularis DC. Coyote Brush B
Baccharis salicifolia (R. & P.)Pers. Mule Fat M
^Centaurea melitensis L. Tocalote N
^Cirsium vulgare (Savi)Ten. Bull Thistle W
^Cynara cardunculus L. Cardoon N
Encelia californica Nutt. California Encelia D
Eriophyllum confertiflorum (DC.)Gray var. confertiflorum Golden-yarrow D
*Gazania sp. Gazania E
Gnaphalium bicolor Bioletti Bicolor Cudweed D
Gnaphalium californicum DC. California Everlasting D
Gutierrezia sarothrae (Pursh)Britt. & Rusby Matchweed D
Hazardia squarrosa ssp. grindelioides (DC.)Clarke Saw-toothed Goldenbush D
Hemizoniafasciculata (DC.)Torrey & Gray Fascicled Tarplant D
Isocoma menziesii (Hook. & Arn.)Nesom var. menziesii Goldenbush N
^Picris echioides L. Bristly Ox-tongue W
Pluchea odorata Cav. Salt Marsh Fleabane W
Stephanomeria diegensis Gottlieb San Diego Wreath-Plant D
^Xanthium strumarium L. Cocklebur W
Boraginaceae - Borage Family
Amsinckia intermedia (Lehm.) Nelson & J.F. Macbr.
Cryptantha intermedia (Gray)Greene
Fiddleneck
Nievitas, Cryptantha
D
D
Merkel & Associates, Inc. # 01-068-01 A-I-2
Lake Calavera
Scientific Name Common Name Habitat
I
I
I
I
I
I
I
I
I
I
Heliotropium curvassavicum L.
Brassicaceae - Mustard Family
*Brassica nigra (L.)Koch
^Hirschfeldia incana (L.)Lagr.-Fossat
^Lobularia maritima (L.)Desv.
^Rorippa nasturtium-officinale (L.)Hayek
Cactaceae - Cactus Family
^'Opuntiaficus-indica (L.)Miller
Opuntia littoralis (Engelm.)Ckll.
Capparaceae - Caper Family
Isomeris arborea Nutt.
Caprifoliaceae - Honeysuckle Family
Lonicera subspicata var. denudata Rehd.
Sambucus mexicana DC.
Cistaceae - Rock-Rose Family
Helianthemum scoparium Nutt.
Convolvulaceae - Morning-Glory Family
Dichondra occidentalis House
Crassuiaceae - Stonecrop Family
Dudleya pulverulenta (Nutt.)Britt. & Rose
Cucurbitaceae - Gourd Family
Marah macrocarpus (Greene)Greene var. macrocarpus
Ericaceae - Heath Family
Xylococcus bicolor Nutt.
Euphorbiaceae - Spurge Family
Eremocarpus setigerus (Hook.)Benth.
*Ricinus communis L.
Fabaceae - Pea Family
*Acacia baileyana
Lathyrus vestitus Nutt. ssp. alefeldii (White)Isely
Lotus scoparius (Nutt.)Ottley var. scoparius
*Medicago polymorpha L.
Fagaceae - Oak Family
Quercus agrifolia Nee
Salt Heliotrope
Black Mustard
Short-pod Mustard
Sweet Alyssum
Water Cress
Indian-fig
Coast Prickly-pear
Bladderpod
San Diego Honeysuckle
Blue Elderberry
Peak Rush-rose
Western Dichondra
Chalk-lettuce
Wild-Cucumber
Mission Manzanita
Doveweed
Castor-bean
Bailey Acacia
San Diego Sweetpea
Coastal Deerweed
California Burclover
Coast Live Oak
W
N
N
N
F
D
D
D
D
D
D
D
D
N
N
E
D
D
N
R
Merkel & Associates, Inc. # 01-068-0! A-I-3
Lake Calavera
I
1
I
I
Scientific Name Common Name Habitat
Quercus berberidifolia Liebm. Scrub Oak C
Geraniaceae - Geranium Family
'^Erodium botrys (Cav.)Bertol. Long-beak Filaree G
"^'Erodium cicutarium (L.)L'Her. Red-stem Filaree G
Geranium caroliniaitum L. Carolina Geranium R
Grossulariaceae - Currant Family
Ribes indecorum Eastw. White Flowering Currant D
Ribes speciosum Pursh Fuchsia-flowered Gooseberry D
Hydrophyllaceae - Waterleaf Family
Phacelia ramosissima Lehm. var. latifolia (Torrey)Cronq. Caterpillar Phacelia D
Pholistoma auritum (Lindl.)Lilja Fiesta Flower R
Lamiaceae - Mint Family
Salvia apiana Jeps. White Sage D
Salvia mellifera Greene Black Sage D
Malvaceae - Mallow Family
Malacothamnus fasciculatus (Nutt.)Greene Mesa Bush Mallow D
Sidalcea malvaeflora (DC.)Benth. ssp. sparsifolia C.L. Hitchc.
Checker-bloom V
Myrtaceae - Myrtle Family
^Eucalyptus sideroxylon Benth. Red Ironbark E
'^Eucalyptus sp. Eucalyptus E
Onagraceae - Evening-Primrose Family
Clarkia purpurea (Curtis)Nelson & Macbr. ssp. viminea (Dougl.)Lewis & LewisLarge ClarkiaR
Paeoniaceae - Peony Family
Paeonia californica Torrey & Gray California Peony R
Plantaginaceae - Plantain Family
Plantago erecta Morris Dot-seed Plantain D
Polemoniaceae - Phlox Family
Navarretia hamata Greene ssp. hamata Hooked Skunkweed D
Polygonaceae - Buckwheat Family
Eriogonum fasciculatum Benth. var.foliolosum (Nutt.)S. Stokes
Interior Fiat-top Buckwheat D
*Rumex crispus L. Curiy Dock A
Portulacaceae - Purslane Family
Claytonia perfoliata Donn ssp. perfoliata Common Miner's-lettuce R
Merkel & Associates, Inc. # 01-068-01 A-I-4
Lake Calavera
Scientific Name Common Name Habitat
Primulaceae - Primrose Family
Dodecatheon clevelandii Greene ssp. clevelandii
Rhamnaceae - Buckthorn Family
Adolphia californica Wats.
Rhamnus crocea Torrey & Gray
Rosaceae - Rose Family
Adenostoma fasciculatum Hook & Arn.
Heteromeles arbutifolia (Ait.)M. Roem.
Potentilla glandulosa Lindl. ssp. glandulosa
Rosa californica C. & S.
Padre's Shooting Star
California Adolphia
Spiny Redberry
Chamise
Toyon
Sticky Cinquefoil
California Rose
V
D
D
C
C
R
R
I
Rubiaceae - Madder Family
Galium angustifolium Nutt. ex Torrey & Gray ssp. Angustifolium
Narrow-leaf Bedstraw
Salicaceae - Willow Family
Salix gooddingii Ball
Salix lasiolepis Benth.
Salix lucida Muhlenb. ssp. lasiandra (Benth)Murray
Saururaceae - Lizard-tail Family
Anemopsis californica Hook.
Saxifragaceae - Saxifrage Family
Jepsonia parryi (Torr.)Small
Goodding's Black Willow
Arroyo Willow
Lance-leaf Willow
Yerba Mansa
Coast Jepsonia
D
W
W
w
w
D
Scrophulariaceae - Figwort Family
Keckiella cordifolia (Benth.)Straw
Mimulus aurantiacus Curtis
Scrophularia californica Cham. & Schldl. ssp.floribunda (Greene)Shaw
California Figwort
Climbing Bush Penstemon
San Diego Monkeyflower
D
D
D
Solanaceae - Nightshade Family
^'Nicotiana glauca Grah.
Tamaricaceae - Tamarisk Family
*Tamarix sp.
Tree Tobacco
Tamarisk
G
W
MONOCOTYLEDONS
Arecaceae - Palm Family
*Washingtonia filifera (Lindl.)Wendl. California Fan Palm W
I Merkel & Associates, Inc. # 01-068-0! A-I-5
Lake Calavera
Scientific Name Common Name Habitat
I
I
I
I
I
I
I
I
I
Cyperaceae - Sedge Family
Carex spissa L. H. Bailey
Cyperus eragrostis Lam.
Eleocharis montevidensis Kunth
Scirpus californicus (CA. Mey.)Steudel.
Iridaceae - Iris Family
Sisyrinchium bellum Wats.
Juncaceae - Rush Family
Juncus acutus L. ssp. leopoldii (Pari.)Snag.
Juncus bufonius L. var. bufonius
Juncus dubius Engelm.
Juncus mexicanus Willd.
Juncus xiphioides E. Mey.
Liliaceae - Lily Family
Bloomeria crocea (Torr.)Cov.
Calochortus splendens Benth.
Chlorogalum pomeridianum (DC.)Kunth
Yucca schidigera Ortgies
Poaceae - Grass Family
*Arundo donax L.
*Bromus diandrus Roth
'•^'Bromus hordeaceus L.
'^Bromus madritensis L. ssp. rubens (L.)Husnot
^'Cortaderia Jubata (Lem.)Stapf
Distichlis spicata (L.)Greene
'^Gastridium ventricosum (Gouan)Schinz & Thell.
^'Hordeum murinum ssp. leporinum (Link)Arcang.
Leymus condensatus (Presl)A. Love
Nassella lepida (A.S. Hitchcock)Barkworth
Nassella pulchra (A.S. Hitchcock)Barkworth
*Piptatherum miliaceum (L.)Cosson
^Polypogon monspeliensis (L.)Desf.
*Vulpia myuros (L.)Gmelin var. hirsuta (Hacketl)Asch
Typhaceae - Cat-Tail Family
Typha latifolia L.
San Diego Sedge
Tall Flatsedge
Dombey's Spike-sedge
California Bulrush
Blue-eyed-grass
Spiny Rush
Toad Rush
Mariposa Rush
Mexican Rush
Iris-leaf Rush
Common Goldenstar
Splendid Mariposa
Wavy-leaf Soap-plant
Mojave Yucca
Giant Reed
Ripgut Grass
Soft Chess
Red Brome
Pampas Grass
Saltgrass
Nit Grass
Hare Barley
Giant Wild Rye
Foothill Needlegrass
Purple Needlegrass
Smilo Grass
Annual Beard Grass
& Graetoner
Foxtail Fescue
Broad-leaved Cattail
W
W
W
F
V
W
W
W
W
W
D
D
D
D
W
N
N
N
N
A
D
N
D
V
V
D
W
N
Merkel & Associates, Inc. # 01-068-01 A-l-6