HomeMy WebLinkAboutCDP 2022-0008; MARTIN RESIDENCE; BIOLOGICAL RESOURCES LETTER - DECEMBER 19 2022; 2022-12-09
December 19, 2022 13764
John Martin
Pamella Martin
3301 Lincoln Street
Carlsbad, California 92008
Subject: Biological Resources Letter Report for the Martin Residence (APN 155-221-05-00; Lot 5) on Buena
Vista Circle in the City of Carlsbad, California
Dear Mr. and Mrs. Martin:
This letter report documents the results of a detailed biological resource assessment conducted for the proposed
residence (APN 155-221-05-00; Lot 5) on Buena Vista Circle in the City of Carlsbad, California (Figure 1).
This letter report is prepared in accordance with the City’s Habitat Management Plan (HMP) for Natural Communities
in the City of Carlsbad (City of Carlsbad 2004) and Guidelines for Biological Studies (City of Carlsbad 2008). The
project site is located within the coastal zone; the western portion of the project site is within Core Area 1 according
to the City HMP, and the site is adjacent to an existing hardline area (Buena Vista Lagoon; City of Carlsbad 2004)
(Figure 2). Dudek conducted a biological study of the property on September 14, 2021; the methods, details, and
results of the investigations are provided herein.
The property (i.e., site) occupies 0.62 acres and is located along the northwest side of Buena Vista Circle
approximately 0.38 miles west of Interstate 5 and 0.57 miles east of the Pacific Ocean (Figure 1). The site is located
in Section 01 in Township 12 South, Range 5 West in the U.S. Geological Service 7.5-minute series topographic
San Luis Rey quadrangle map. The site is bordered by the Buena Vista Lagoon to the north and northwest, by
Buena Vista Circle to the south, and existing residences to the east and west (Figure 1).
Project Description
The proposed project includes the construction of a 5,530 square foot single-family residence and attached 1,440
square foot accessory dwelling unit on an undeveloped, vacant lagoon fronting lot accessed from Buena Vista Circle. The
project footprint encompasses 0.34 acres (14,810 square feet), or approximately half of the site, as the total square
footage of the lot is approximately 0.62 acres (27,000 square feet). This remaining lot square footage is to include a
100’ wetland buffer encompassing the western portion of the site, and a 25-foot wide public access easement within
the open space as a requirement of the Mello II Segment of the Local Coastal Program. In order to be consistent with the
California Coastal Commission’s (CCC) requests of other nearby properties, the public access easement is to be located
at the bottom of the slope. While this location is not consistent with the HMP Coastal Zone Standards, the City will defer
to the CCC. The proposed project may be required to remove non-native plants in the 100’ wetland buffer and restore
the area with native plants. A fuel modification zone (FMZ) B-3 may be required by the Fire Department within a portion
of the open space.
DUDEK
MAIN O FFICE
605 THIRD STREET
ENCINITAS, CALIFORNIA 92024
T 800.450.1818 F 760.632.0164
DUDEK.COM
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 2 DECEMBER 2022
Regulatory Context
California Endangered Species Act
The California Department of Fish and Wildlife (CDFW) administers the California Endangered Species Act (CESA),
which prohibits the “take” of plant and animal species designated by the California Fish and Game Commission as
endangered or threatened in the state of California. Under CESA Section 86, take is defined as “hunt, pursue, catch,
capture, or kill, or attempt to hunt, pursue, catch, capture, or kill.” CESA Section 2053 stipulates that state agencies
may not approve projects that will “jeopardize the continued existence of any endangered species or threatened
species, or result in the destruction or adverse modification of habitat essential to the continued existence of those
species, if there are reasonable and prudent alternatives available consistent with conserving the species or its
habitat which would prevent jeopardy.”
CESA defines an endangered species as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or
plant which is in serious danger of becoming extinct throughout all, or a significant portion, of its range due to one or
more causes, including loss of habitat, change in habitat, overexploitation, predation, competition, or disease.” CESA
defines a threatened species as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant
that, although not presently threatened with extinction, is likely to become an endangered species in the foreseeable
future in the absence of the special protection and management efforts required by this chapter. Any animal determined
by the [California Fish and Game] Commission as rare on or before January 1, 1985, is a threatened species.” A
candidate species is defined as “a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant that
the Commission has formally noticed as being under review by the department for addition to either the list of
endangered species or the list of threatened species, or a species for which the Commission has published a notice of
proposed regulation to add the species to either list.” CESA does not list invertebrate species.
CESA authorizes the taking of threatened, endangered, or candidate species if take is incidental to otherwise lawful
activity and if specific criteria are met. These provisions also require CDFW to coordinate consultations with U.S. Fish and
Wildlife Service (USFWS) for actions involving federally listed species that are also state-listed species. In certain
circumstances, CESA allows CDFW to adopt a CESA incidental take authorization as satisfactory for California
Environmental Quality Act (CEQA) purposes based on finding that the federal permit adequately protects the species and
is consistent with state law.
A CESA permit may not authorize the take of fully protected species that are protected in other provisions of the
California Fish and Game Code, discussed further as follows.
Federal Endangered Species Act
The federal Endangered Species Act (ESA) of 1973 (16 U.S.C. 1531 et seq.), as amended, is administered by USFWS
for most plant and animal species, and by the National Oceanic and Atmospheric Administration National Marine
Fisheries Service for certain marine species. This legislation is intended to provide a means to conserve the
ecosystems upon which endangered and threatened species depend and provide programs for the conservation of
those species, thus preventing extinction of plants and wildlife. ESA defines an endangered species as “any species
that is in danger of extinction throughout all or a significant portion of its range.” A threatened species is defined
as “any species that is likely to become an endangered species within the foreseeable future throughout all or a
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 3 DECEMBER 2022
significant portion of its range.” Under the federal ESA, it is unlawful to take any listed species, and take is defined
as “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any such
conduct.”
ESA allows for the issuance of incidental take permits for listed species under Section 7, which is generally available
for projects that also require other federal agency permits or other approvals, and under Section 10, which provides
for the approval of habitat conservation plans (HCPs) on private property without any other federal agency
involvement. Upon development of an HCP, USFWS can issue incidental take permits for listed species.
Migratory Bird Treaty Act
The Migratory Bird Treaty Act was originally passed in 1918 as four bilateral treaties, or conventions, for the
protection of a shared migratory bird resource. The primary motivation for the international negotiations was to stop
the “indiscriminate slaughter” of migratory birds by market hunters and others. Each of the treaties protects
selected species of birds and provides for closed and open seasons for hunting game birds. The Migratory Bird
Treaty Act protects over 800 species of birds (16 U.S.C. 703–712). Two species of eagles that are native to the
United States, the bald eagle (Haliaeetus leucocephalus) and golden eagle (Aquila chrysaetos), were granted
additional protection within the United States under the Bald and Golden Eagle Protection Act (16 U.S.C. 668–
668d) to prevent the species from becoming extinct.
Jurisdictional Waters of the United States, including Wetlands
U.S. Army Corps of Engineers
Pursuant to Section 404 of the Clean Water Act, the U.S. Army Corps of Engineers (ACOE) regulates the discharge
of dredged and/or fill material into “waters of the United States.” The term waters of the United States is defined
in the in ACOE regulations as follows:
▪ All waters which are currently used, or were used in the past, or may be susceptible to use in interstate
or foreign commerce, including all waters which are subject to the ebb and flow of the tide
▪ All interstate waters including interstate wetlands
▪ All other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats,
sandflats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use,
degradation or destruction of which could affect foreign commerce, including any such waters:
a. Which are or could be used by interstate or foreign travelers for recreational or other purposes
b. From which fish or shellfish are or could be taken and sold in interstate or foreign commerce
c. Which are used or could be used for industrial purpose by industries in interstate commerce
▪ All impoundments of waters otherwise defined as waters of the United States under the definition
▪ Tributaries of waters identified in paragraphs (a) (1) through (4) of this section
▪ The territorial seas
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 4 DECEMBER 2022
▪ Wetlands adjacent to waters (other than waters that are themselves wetlands) identified in paragraphs
(a)(1) through (6) of this section (33 CFR 328.3(a)).
The term “wetlands” (a subset of waters) is defined in 33 CFR 328.3(b) as “those areas that are inundated or
saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal
circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
Wetlands generally include swamps, marshes, bogs, and similar areas.”
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, which is defined in 33 CFR 328.3(e) as “that line on the shore established by the
fluctuations of water and indicated by physical characteristics such as a 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.”
On June 5, 2007, ACOE and the U.S. Environmental Protection Agency (EPA) released guidance on the geographic
extent of jurisdiction under the federal Clean Water Act, based on the U.S. Supreme Court’s interpretation of the
Clean Water Act in Rapanos v. United States and Carabell v. Army Corps of Engineers, 126 S. Ct. 2208 (2006)
(ACOE and EPA 2008). The ACOE/EPA guidance states that ACOE will regulate traditional navigable waters (TNWs),
adjacent wetlands (directly abutting TNWs), and relatively permanent waters tributary to TNWs and adjacent
wetlands. Non-navigable tributaries that are not relatively permanent nor are wetlands adjacent to such tributaries
will be assessed on a case-by-case basis to determine whether they have a “significant nexus” to a TNW. A
significant nexus occurs when waters, including adjacent wetlands, affect the chemical, physical, or biological
integrity of TNWs. Factors considered during the significant nexus evaluation include:
1. Flow characteristics and functions of the tributary itself in combination with the functions performed by any
wetlands adjacent to the tributary
2. Hydrologic characteristics, including but not limited to volume, duration, and frequency of flow; proximity to
TNW; size of the watershed; average annual rainfall; and average annual winter snow pack
3. Ecological characteristics including but not limited to the ability of tributaries to carry pollutants and flood
waters to TNWs, provide aquatic habitat that support TNWs, trap and filter pollutants or store flood waters,
and maintain water quality
The discharge of dredge or fill material into waters, including wetlands, requires authorization from ACOE prior to
impacts.
For impacts to wetlands or waters under ACOE jurisdiction, either an Individual Permit or a Nationwide Permit (NWP)
would be required in accordance with Section 404 of the Clean Water Act. The NWP is issued for a variety of projects
having minimal impacts to jurisdictional waters of the United States, including wetlands. If it is determined that the
project qualifies for use of the NWP program, a Pre-Construction Notification must be submitted to ACOE, if required,
that includes a project description, a purpose and need statement for the project, a description of efforts to avoid
and minimize impacts to jurisdictional areas, and a conceptual mitigation and monitoring plan. Additional
environmental review under the National Environmental Policy Act (NEPA) is not required for a NWP. As a result,
once ACOE has determined that the application is complete and the project meets the requirements of the NWP,
authorization to use the NWP can be issued.
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 5 DECEMBER 2022
If a project fails to comply with the terms and regulations specified in the NWP guidelines, then an Individual Permit
application to ACOE must be prepared. The application for the Individual Permit includes a project description, a
purpose and need statement for the project, a description of efforts to avoid and minimize impacts to jurisdictional
areas, and a conceptual mitigation and monitoring plan. The Individual Permit application also must include an
alternatives analysis that would be completed to allow ACOE to make findings in accordance with Section 404(b)(1).
Once the application is determined to be complete and ACOE accepts the 404(b)(1) alternatives analysis, ACOE will
issue a public notice for the Individual Permit. The NEPA-required public comment period lasts for 45 days, and all
responsible federal agencies and adjacent property owners are notified. When the public comment period is closed,
the applicant has 30 days to respond to the comments received by ACOE. Prior to issuance of the Individual Permit,
ACOE must complete an environmental assessment to comply with the requirements of NEPA. The environmental
assessment and Finding of No Significant Impact is usually completed by the applicant’s consultant and finalized
by ACOE staff. Following ACOE internal review of the environmental assessment, ACOE will issue the permit.
California Department of Fish and Wildlife
Pursuant to Section 1602 of the California Fish and Game Code, CDFW regulates all diversions, obstructions, or
changes to the natural flow or bed, channel, or bank of any river, stream, or lake that supports fish or wildlife.
In 14 CCR 1.72, CDFW defines a “stream” (including creeks and rivers) as “a body of water that flows at least
periodically or intermittently through a bed or channel having banks and supports fish or other aquatic life. This
includes watercourses having surface or subsurface flow that supports or has supported riparian vegetation.”
In 14 CCR 1.56, CDFW’s definition of “lake” includes “natural lakes or man-made reservoirs.” Diversion,
obstruction, or changes to the natural flow or bed, channel, or bank of any river, stream, or lake that supports fish
or wildlife requires authorization from CDFW by means of entering into an agreement pursuant to Section 1602 of
the California Fish and Game Code.
California Regional Water Quality Control Board
Pursuant to Section 401 of the federal Clean Water Act, the Regional Water Quality Control Board (RWQCB)
regulates discharging waste, or proposing to discharge waste, within any region that could affect a “water of the
state” (California Water Code, Section 13260(a)), pursuant to provisions of the Porter–Cologne Water Quality
Control Act (Porter–Cologne Act). Waters of the state are defined as “any surface water or groundwater, including
saline waters, within the boundaries of the state” (California Water Code, Section 13050(e)). Before ACOE will issue
a Clean Water Act Section 404 permit, applicants must receive a Clean Water Act Section 401 Water Quality
Certification from the RWQCB. If a Clean Water Act Section 404 permit is not required for the project, the RWQCB
may still require a permit (i.e., Waste Discharge Requirement) for impacts to waters of the state under the Porter–
Cologne Act.
California Coastal Act
Under the California Coastal Act, the CCC regulates the “coastal zone” and requires a coastal development permit
for almost all development within this zone. From 3 miles seaward, the coastal zone generally extends
approximately 1,000 miles inland. In less developed areas, it can extend up to 5 miles inland from mean high-tide
line but can also be considerably less than 1,000 yards inland in developed areas.
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 6 DECEMBER 2022
The California Coastal Act also protects designated sensitive coastal areas by providing additional review and
approvals for proposed actions in these areas. The act defines wetlands as “...lands within the coastal zone which
may be covered periodically or permanently with shallow water and include saltwater marshes, freshwater marshes,
open or closed brackish water marshes, swamps, mudflats, and fens…” The California Coastal Act allows diking,
filling, or dredging of wetlands for certain uses, such as restoration. The act also directs each city or county within
the coastal zone to prepare a local coastal permit (LCP) for CCC certification (CERES 2010). Under approved LCPs,
jurisdictions can independently approve LCPs for projects developed consistent with the approved LCP. The City
has an approved LCP.
Local Conservation Plans
North County Multiple Habitat Conservation Program
The North County Multiple Habitat Conservation Program (MHCP) is a long-term regional conservation plan
established to protect sensitive species and habitats in northern San Diego County. The MHCP is divided into seven
subarea plans—one for each jurisdiction within the MHCP—that are permitted and implemented separately from
one another. The City of Carlsbad is the only city under the MHCP that has an approved and permitted subarea plan
(i.e., the City of Carlsbad HMP (City of Carlsbad 2004)).
The MHCP sets forth general and subarea conditions of coverage that must be met for each covered species for
the City to obtain take authorization. These conditions can be found in Appendix C of the Carlsbad HMP.
City of Carlsbad Habitat Management Plan
The Carlsbad HMP was adopted by the City in December 1999, and the final approvals from USFWS and CDFW, including
implementing agreement and terms and conditions, were granted in November 2004. The purpose of the HMP is to
guide the design, management, monitoring, and public use of the preserve system. The HMP calls for 6,478 acres of
natural habitat to be preserved within the City, as well as an additional 308 acres of habitat for the coastal California
gnatcatcher (Polioptila californica californica) within the City of Carlsbad’s or the county’s gnatcatcher core area. The
Carlsbad HMP identifies local facility management zones, which were developed based on the distribution of existing
vegetation communities and sensitive species. The zones were further broken down into HMP cores, linkages, and
special resource areas.
The project site is located within Local Facility Management Zone 1, and the northwest portion of the site is within
the HMP Core 1 Focus Planning Area (Figure 2). The Core 1 U.S. Focus Planning Area is approximately 206 acres
in size and includes the Buena Vista Lagoon and adjoining wetland and upland habitats in northwest Carlsbad.
The HMP describes Core 1 as almost entirely developed but containing scattered fragments of natural vegetation,
including major and critical stands of riparian, as well as some scattered patches of coastal sage scrub, non-
native grassland, maritime succulent scrub, saltmarsh, and freshwater marsh. Some coastal sage scrub areas
within Core 1 support California gnatcatchers. Much of the remaining vegetation is on slopes adjoining Buena
Vista and Agua Hedionda Lagoons, thus contributing to the biological value of the lagoon watersheds. Buena
Vista and Agua Hedionda Lagoons support major or critical populations of western pond turtle (Actinemys
marmorata), white-faced ibis (Plegadis chihi), western snowy plover (Charadrius alexandrinus nivosus), and
California least tern (Sternula antillarum browni). The lagoons also provide foraging habitat for the American
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 7 DECEMBER 2022
peregrine falcon (Falco peregrinus anatum) and California brown pelican (Pelecanus occidentalis californicus).
The HMP Goals for the Core 1 are as follows:
Conserve the majority of sensitive habitats in or contiguous with biological core areas, including no
net loss of wetland habitat, and preserve, coastal sage scrub and maritime succulent scrub
adjacent to the lagoons. Retain and manage natural habitats adjacent to lagoons to buffer wetland
resources from adverse effects and provide upland nesting habitat for pond turtles and other HMP
species.
The project site is not located within an existing or proposed hardline conservation area; however, the site is located
adjacent to an existing hardline conservation area associated with the Buena Vista Lagoon. Buffers within the
Coastal Zone shall be provided between all habitat from the delineated edge of wetland or riparian areas.
The HMP’s conditions for coverage provide the following guidelines for projects adjacent to habitat occupied by
least Bell’s vireo (Vireo bellii pusillus) (City of Carlsbad 2004, Section 6.A(f)). As stated in the HMP:
Biological buffer of at least 100 feet shall be maintained adjacent to occupied least Bell’s vireo
habitat, measured from the outer edge of riparian vegetation. For wetlands and riparian areas
possessing an unvegetated bank or steep slope (greater than 25 per cent), the buffer shall be
measured from the top of the bank or steep slope rather than the edge of habitat, unless there is
at least 50 feet between the riparian or wetland area and the toe of the slope. If the toe of the
slope is less than 50 feet from the wetland or riparian area, the buffer shall be measured from the
top of the slope. Within this 100-foot buffer, no new development shall be allowed, and the area
shall be managed for natural biological values as part of the preserve system. Buffers less than
100 feet shall require written concurrence of the USFWS and CDFG within 30 days of receipt of
written request for concurrence by the local jurisdiction.
Wetland Buffers
Wetland buffers generally refer to an area that extends perpendicularly into upland areas from the delineated edge
of wetland or riparian areas. Wetland buffer areas establish an upland zone adjacent to wetlands designed to avoid
and minimize indirect effects on wetland functions (e.g., species habitat, water quality maintenance, flood capacity).
The Carlsbad HMP and LCP include the following provisions requiring wetland buffers.
Buffers shall be provided between all preserved habitat areas and development. Minimum buffer
widths shall be provided as follows:
a. 100 feet for wetlands
b. 50 feet for riparian areas
c. 20 feet for all other native habitats (coastal sage scrub, southern maritime chaparral,
maritime succulent scrub, southern mixed chaparral, native grassland, oak woodland).
Any proposed reductions in buffer widths for a specific site shall require sufficient information to determine that a
buffer of lesser width will protect the identified resources. Such information shall include, but is not limited to, the
size and type of the development and/or proposed mitigation (e.g., planting of vegetation or the construction of
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 8 DECEMBER 2022
fencing) that will also achieve the purposes of the buffer. The City, CDFW, the USFWS, and the CCC staff shall be
consulted in such buffer reduction determinations.
City Guidelines for Riparian and Wetland Buffers provides additional guidance for the planning of wetland buffers.
Within the coastal zone, protective buffers shall be a minimum of 50 feet in width surrounding riparian habitats and
100 feet in width surrounding jurisdictional wetlands. As previously noted and in accordance with Condition 7-11
of the HMP, the protective buffer for wetlands and riparian areas possessing an unvegetated bank or steep slope
(more than 25%) shall be measured from the top of the bank or steep slope rather than the edge of habitat. Buffers
should be 100 feet from the edge of riparian or oak habitat occupied by the least Bell’s vireo, southwestern willow
flycatcher (Empidonax traillii extimus), or Harbison dun skipper butterfly (Euphyes vestris harbisoni) (HMP D-91).
The City designates three potential zones within wetland buffers: protection zone (extending a minimum of 50 feet
from the wetland/riparian edge), separation zone (if required, extending from 50 feet to 100 feet from the
wetland/riparian edge), and transition zone (if required). The following uses are considered allowable in the wetland
buffer: habitat restoration, stormwater control and flood control facilities and associated access roads, bridge
crossings, utilities, trails, and passive recreation facilities. A process for identifying alternative buffer configurations
is also identified in the guidelines. The guidelines for projects in the coastal zone are the same as those previously
listed.
Buffer widths shall be measured from the edge of preserved habitat nearest the development to the closest point
of development. For wetlands and riparian areas possessing an unvegetated bank or steep slope (greater than 40%
with a 25-foot elevation differential), the buffer shall be measured from the top of the bank or steep slope rather
than the edge of habitat, unless there is at least 50 feet between the riparian or wetland area and the toe of slope.
If the toe of the slope is less than 50 feet from the wetland or riparian area, the buffer shall be measured from the
top of the slope. As previously discussed, in circumstances where application of this buffer would preclude
reasonable use of a property, alternative buffer solutions may be negotiated with the City, CCC, and wildlife
agencies.
California Environmental Quality Act
California Environmental Quality Act Guidelines 15380
CEQA requires identification of a project’s potentially significant impacts on biological resources and ways
that such impacts can be avoided, minimized, or mitigated. The act also provides guidelines and thresholds
for use by lead agencies for evaluating the significance of proposed impacts.
CEQA Guideline 15380(b)(1) defines endangered animals or plants as species or subspecies whose “survival
and reproduction in the wild are in immediate jeopardy from one or more causes, including loss of habitat,
change in habitat, overexploitation, predation, competition, disease, or other factors” (14 CCR 15000 et seq.).
A rare animal or plant is defined in CEQA Guideline 15380(b)(2) as a species that, although not presently
threatened with extinction, exists “in such small numbers throughout all or a significant portion of its range
that it may become endangered if its environment worsens; or … [t]he species is likely to become endangered
within the foreseeable future throughout all or a significant portion of its range and may be considered
‘threatened’ as that term is used in the federal Endangered Species Act.” Additionally, an animal or plant may
be presumed to be endangered, rare, or threatened if it meets the criteria for listing, as defined further in
CEQA Guideline 15380(c).
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 9 DECEMBER 2022
CDFW recognizes that all plants with California Rare Plant Rank 1A, 1B, and 2 of the CNPS Inventory of Rare and
Endangered Plants in California (CNPS 2018) may meet the criteria for listing as threatened or endangered and
should be considered under CEQA (CDFW 2018). Some of the California Rare Plant Rank 3 and 4 plants meet the
criteria for determination as “rare” or “endangered” as defined in Section 1901, Chapter 10 (Native Plant Protection
Act), Division 2, of the California Fish and Game Code, as well as Section 2062 and Section 2067, Chapter 1.5
(CESA), Division 3. Therefore, consideration under CEQA for these California Rare Plant Rank 3 and 4 species is
strongly recommended by CNPS (CNPS 2018).
The criteria used to determine the significance of impacts to biological resources under CEQA are provided in
Chapter 5, Anticipated Project Impacts.
Special-Status Plants and Wildlife
Species that are federally listed or state-listed as endangered or threatened are considered special-status species
within this draft conceptual alternatives screening analysis for biological resources.
Some mammals and birds are protected by the state as fully protected species, as described in the California Fish
and Game Code, Sections 4700 and 3511, respectively. Fully protected species may not be taken or possessed
without a permit from the California Fish and Game Commission, and no permit is available for the incidental take
of a fully protected species. Species considered state candidates for listing as threatened or endangered are subject
to the taking prohibitions and provisions under CESA as if the species were listed.
Special-Status Vegetation Communities
Section IV, Appendix G (Environmental Checklist Form) of the CEQA Guidelines (14 CCR 15000 et seq.) requires an
evaluation of impacts to “any riparian habitat or other sensitive natural community identified in local or regional
plans, policies, regulations, or by the California Department of Fish and Game or the U.S. Fish and Wildlife Service.”
For purposes of this analysis, riparian is defined by the National Research Council’s 2002 publication Riparian
Areas: Functions and Strategies for Management:
Riparian areas are transitional between terrestrial and aquatic ecosystems and are distinguished by
gradients in biophysical conditions, ecological processes, and biota. They are areas through which
surface and subsurface hydrology connect waterbodies with their adjacent uplands. They include
those portions of terrestrial ecosystems that significantly influence exchanges of energy and matter
with aquatic ecosystems (i.e., a zone of influence). Riparian areas are adjacent to perennial,
intermittent, and ephemeral streams, lakes, and estuarine-marine shorelines.
Survey Methods
Literature Review
The following data sources were reviewed to assist with biological and jurisdictional efforts:
▪ U.S. Department of Agriculture Natural Resource Conservation Service (USDA 2021)
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 10 DECEMBER 2022
▪ CDFW California Natural Diversity Database (CDFW 2021)
▪ California Native Plant Society Inventory of Rare and Endangered Plants (CNPS 2021)
▪ USFWS Species Occurrence Data (USFWS 2021)
Biological Survey
A biological assessment was conducted by Dudek Biologist Shana Carey on September 14, 2021; during this survey
vegetation mapping and an inventory of botanical and wildlife species occurring on site was recorded. Additionally,
a Trimble R1 Global Positioning System (GPS) was used to delineate the border of the Buena Vista Lagoon to the
adjacent upland habitat. Following completion of this biological assessment, the GPS data was transferred to a
topographic base using ArcGIS. A full jurisdictional delineation was not conducted.
The vegetation communities and land covers were mapped according to Holland (1986) and Oberbauer et al.
(2008). An aerial photograph map (Google Earth 2021) with a digital overlay of the project boundary was utilized to
record vegetation and any sensitive biological resources directly in the field. All plant species and animal species
encountered during the survey were identified and recorded directly into a field notebook. In addition to species
detected during the surveys, expected wildlife use of the site was evaluated by known habitat preferences of local
species and knowledge of their relative distributions in the area. A compiled list of the plant and animal species
detected on site during the survey is attached to this letter report as Appendix A and Appendix B, respectively.
Survey results
The site is currently undeveloped and consists almost entirely of disturbed habitat and non-native woodland
composed of ornamental and non-native plant species. The northwestern half of the site has a northwestern-facing
slope that intersects the edge of Buena Vista Lagoon at the base of the slope.
Flora
The site is composed almost entirely of non-native vegetation, with the exception of several native species, most of
which are either within or in close proximity to the Buena Vista Lagoon including: broadleaf cattail (Typha latifolia),
saltgrass (Distichlis spicata), and marsh jaumea (Jaumea carnosa). The majority of the site does not provide good
quality habitat for native plant species; a total of 20 plants were identified on site, of which 5 were native (25%),
and 15 were non-native (75%). The most common non-native plants identified include ice plant (Carpobrotus
edulis), Bermuda buttercup (Oxalis pes-caprae), and several species of brome grasses. Using the recognized San
Diego County vegetation mapping systems (Holland 1986; Oberbauer et al. 2008), the site consists of coastal and
valley freshwater marsh, disturbed habitat, and non-native woodland (Figure 3). The acreages of the vegetation
communities and land covers are listed in Table 1, and mitigation ratios are based on the City’s HMP and Biology
Guidelines. On-site vegetation and land cover mapping is defined and described as follows.
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TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 11 DECEMBER 2022
Table 1
Vegetation Communities and Land Cover
Habitat Type Existing Acres Habitat Mitigation Ratios
Coastal and Valley Freshwater
Marsh
0.02 No net loss
Non-native woodland 0.23 Mitigation fee
Disturbed Habitat 0.37 Mitigation fee
Total 0.62 N/A
Coastal and Valley Freshwater Marsh (FM) is a habitat type that develops where the water table is at or just above
the ground surface such as around the margins of lakes, ponds, slow-moving streams, ditches, and seepages
(Holland 1986; Oberbauer et al. 2008). The portion of Buena Vista Lagoon extending into the site along the
western border was classified as a coastal marsh community, dominated almost entirely by broadleaf cattail,
with some saltgrass and marsh jaumea.
Non-native Woodland (NNW) is habitat type that that is not recognized by Holland (1986) as a native plant
community, however it is a distinct “naturalized” vegetation type that is fairly widespread in southern California and
is considered a woodland habitat. It typically consists of monotypic stands of introduced Australian eucalyptus trees
(Eucalyptus spp.). The understory is either depauperate or absent owing to shade and the possible allelopathic
(toxic) properties of the eucalyptus leaf litter. Although eucalyptus woodlands are of limited value to most native
plants and animals, they frequently provide nesting and perching sites for several raptor species. On site, non-
native woodland occurs only in the western portion along the slope leading down to the lagoon
Disturbed Habitat (DH) is a land cover type that is characterized by a predominance of non-native species, often
introduced and established through human action. Disturbed habitat has been physically disturbed and is no longer
recognizable as native or naturalized vegetation, while retaining a soil substrate (Holland 1986; Oberbauer et al.
2008). Disturbed habitat occurs throughout the entire eastern half of the project site, and is dominated mostly by
non-native, regularly mowed, grasses and forbes including Bromus species, scutch grass (Cynodon dactylon),
fountain grass (Pennisetum setaceum), as well as seedling Brazilian peppertrees (Schinus terebinthifolia), and ice
plant. One native species was observed in this area, western ragweed (Ambrosia psilostachya).
Fauna
Due to the predominance of non-native vegetation and site disturbance characteristics, the site has limited
potential to provide habitat that supports wildlife species. The project site is mostly surrounded by existing
development that has no connectivity to habitat areas, with the exception of the northwest corner, which connects
to the Buena Vista Lagoon freshwater marsh. Furthermore, given the residential and commercial surroundings, the
site is unlikely to serve as a wildlife corridor. Several non-native trees exist within the project site; however it is
unlikely that special-status birds (including raptors) would use the site for nesting. There are no prominent rocks,
boulders, or features on site that could be used by special-status reptiles. The few wildlife species detected during
the survey are listed in Appendix B of this letter report.
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TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 12 DECEMBER 2022
Six wildlife species were identified on site: American crow (Corvus brachyrhynchos), Anna’s hummingbird (Calypte
anna), bushtit (Psaltriparus minimus), house finch (Haemorhous mexicanus), lesser goldfinch (Spinus psaltria), and
song sparrow (Melospiza melodia).
Jurisdictional Wetland Resources
The 0.02 acres of marsh along the western border of the site is considered a wetland under the jurisdiction of
the ACOE, RWQCB, CDFW, and the CCC. The extent of the freshwater marsh was determined based on the
presence of several wetland indicators from the ACOE delineation manual including hydrology and hydrophytic
vegetation.
Special-Status Species
Special-Status Plants
No special-status plant species considered endangered, rare, or threatened under the CEQA Guidelines (14 CCR
15380) were identified during the site visits. Special-status plants known to occur in the area are described in
Appendix C. Based on the disturbed habitat, highly urbanized area, high cover of ornamental vegetation, as well as
elevation and soils, there are only three special-status plant species that have a low potential to occur within the
project area. However, due to the timing of the site visit corresponding with the blooming season, as well as overall
showy physical characteristics, it is highly likely that they would have been observed during the site visit.
Additionally, there is a low potential for five plant species to occur within the lagoon, however the project is
completely avoiding this area.
Special-Status Wildlife
No special-status wildlife species were detected during the surveys. Special-status wildlife species known to occur
in the area are described in Appendix D.
Considering the limited native habitat on site and the disturbed nature of the habitat, there are few special-status
wildlife species that have the potential to occur within the project area (Appendix D). There is a moderate potential
for eight wildlife species to occur on site during some stage of their life cycle (e.g., foraging, migration, or breeding).
These species are associated with the lagoon, which the project is completely avoiding.
Anticipated Project Impacts
This section addresses direct, indirect, and cumulative impacts to biological resources that would result from
implementation of the proposed project.
Direct impacts were quantified by overlaying the proposed project grading impact limits on the biological resources
map of the site. For purposes of this assessment, all biological resources in the areas to be graded were considered
directly impacted.
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TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 13 DECEMBER 2022
Indirect impacts primarily result from adverse “edge effects” as either short-term indirect impacts related to
maintenance activities or long-term, chronic indirect impacts associated with increased noise or the introduction of
invasive species due to the proximity of houses to open space areas. During construction activities, indirect impacts
may include dust and noise, which could temporarily disrupt habitat and species vitality. However, all project work
will be subject to the typical restrictions and requirements that address erosion, runoff, and water quality, including
the federal Clean Water Act and National Pollution Discharge Elimination System.
Cumulative impacts refer to incremental individual environmental effects over the long-term implementation of the
proposed project when considered together with other impacts from other projects in the area. These impacts taken
individually may be minor, but they are considered collectively significant as they occur over a period of time.
Direct Impacts
The impact analysis includes an overlay of the limits of grading for the project as well as the review of the proposed
site plan. Figure 4, Biological Resources Impacts, provides the illustration of the proposed impact limits of grading
area on the biological resources. Proposed impacts will result from the construction of the proposed project
development. No impacts to the wetland buffer or native habitat will occur from project construction.
Vegetation Communities
The proposed project has been designed to concentrate development in areas that are mapped as disturbed
habitat. Areas within the riparian habitat of Buena Vista Lagoon as well as the riparian buffers will not be impacted
except for uses allowed within the buffers (25-foot public access easement).
Vegetation Impacts
Implementation of the proposed project would result in the direct loss of one vegetation community, in accordance with
the group designations of the Carlsbad HMP, presented in detail in Table 2 and shown in Figure 4. Approximately 0.34
acres would be impacted as a result of the proposed project due to grading and would occur entirely within disturbed
land (BIO-1). No direct impacts would occur within the 100-foot wetland buffer (Figure 4). The function of the wetland
buffer as protection for the existing native habitat will be implemented by the proposed installation of fencing and signage
to protect the habitat and preclude human access (BIO-4). The details of each impact type, including impacts to existing
riparian and upland buffers, are presented and described below.
Table 2
Existing Acreage and Proposed Impacts to Vegetation Communities/Land Covers on the
Laguna Drive Project Site (Acres)
Vegetation Community/ Land
Cover Existing
Impact from Grading for
Development (outside of HMP
Hardline Preserve)
Group F
Disturbed habitat 0.37 0.34
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TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
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Vegetation Community/ Land
Cover Existing
Impact from Grading for
Development (outside of HMP
Hardline Preserve)
Other Lands
Non-Native Woodland 0.23 -
Coastal and Valley Freshwater
Marsh
0.02 -
Total 0.62 0.34
Special-Status Plants
Special-status plant species were not detected during surveys; and a full list of species present was prepared
(Appendix C). Species with moderate potential to occur would have been observed during the visits to the site.
Additionally, impacts are not anticipated to occur in the habitat where the potentially present riparian species
would occur. Therefore, no impacts to special status plants are anticipated.
Special-Status Wildlife Species
Special-status wildlife species were not detected during surveys; and a full list of species present was prepared
(Appendix D). The following species are HMP covered species: California gnatcatcher, Cooper’s hawk, least Bell’s
vireo, Southern California rufous-crowned sparrow, yellow-breasted chat. Since the proposed impacts to the site
are limited to disturbed vegetation and there would be no impacts within the 100-foot wetland buffer, no impacts
to special status species are anticipated.
Indirect Impacts
The project site is bordered by the Carlsbad HMP hardline preserve (Buena Vista Lagoon) to the north and
northwest, residential development to the east and west, and Buena Vista Circle to the south. As mentioned
previously, the project proposes to incorporate a wetland buffer encompassing the western portion of the site as
well as the Carlsbad HMP Preserve. The proposed project would include open space adjacent to the preserve as
well as a 25-foot proposed public access easement (Figure 4). Therefore, edge effects could potentially occur along
the development-preservation interface to the north.
The preserve edge is proposed to be provided protection by signage and/or fencing. here will be no lighting within
the preserve.
Indirect impacts are addressed in the HMP by compliance with the Adjacency Standards or by avoidance of
impacts to nesting birds. The HMP adjacency standards only apply to areas directly adjacent to the preserve
which include the northern and northwestern boundaries.
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 15 DECEMBER 2022
Vegetation Communities
Indirect impacts to vegetation communities would primarily result from adverse “edge effects.” During construction
of the proposed project, edge effects may include dust, which could disrupt plant vitality in the short term, and/or
construction-related soil erosion and runoff. However, typical construction practices, including dust control, erosion
control, and water quality protection measures, will be implemented to reduce these effects (BIO-4).
Potential long-term indirect impacts on vegetation could include trampling by humans, invasion by exotic plants and
animals, exposure to urban pollutants (fertilizers, pesticides, herbicides, and other hazardous materials), increase
or decrease in natural fire regime, soil erosion, and hydrologic changes (e.g., surface and groundwater level and
quality). Although the project is designed to minimize preserve edge effects, long-term indirect impacts could occur.
Long-term indirect impacts are anticipated to be reduced to vegetation communities because the proposed open
space, which includes the wetland habitat and the area within the 100-foot wetland buffer, will be preserved. For
the existing HMP Preserve off site to the north, indirect impacts are proposed to be prevented by adherence to the
Adjacency Standards (BIO-5) and the fencing that exists or is proposed. Finally, vegetation within the open space
wetland buffer will likely need to be protected by the planting of native plant species, in accordance with the HMP
Coastal Zone Standards Section 7-11 (BIO-2). Implementation of these measures are expected to reduce indirect
impacts to vegetation communities to a level below significant.
Special-Status Plants
Most of the indirect impacts to vegetation communities cited previously can also affect special-status plants.
It should be noted that no special status plants were detected on site and none are anticipated; however, if
there are plants that occur off site within adjacent areas, these standard measures provide protection. During
construction of the proposed project, indirect effects may include dust which could disrupt plant vitality in the
short term and/or construction-related soil erosion and drainage runoff. However, it is assumed that typical
construction practices, including dust and erosion control and water quality BMPs, will be implemented an d
will reduce these effects. Implementation of appropriate biological resource protection measures (BIO-4) and
adherence to the adjacency standards addressed in the Carlsbad HMP (BIO-5) are expected to reduce indirect
impacts to special-status plants to a level below significant.
Special-Status Wildlife
Most of the indirect impacts to vegetation communities mentioned previously can also affect special-status wildlife
in adjacent undeveloped areas. In addition, wildlife may be indirectly affected in the short term and long term by
noise, which can disrupt normal activities. Also, adverse indirect impacts to vegetation communities, such as
trampling of vegetation, can cause degradation of habitat quality. Implementation of appropriate biological resource
protection measures (BIO-4) and adherence to the adjacency standards addressed in the Carlsbad HMP (BIO-5) is
expected to reduce indirect impacts to special-status wildlife to a level below significant.
Indirect impacts include potential disruption of breeding birds, including potentially occurring special-status species
and other wildlife species that may use the riparian habitat for nesting. Indirect impacts from construction-related
noise may occur to special-status wildlife if construction occurs during the breeding season (February 15 through
August 31 for most species, and January 1 through August 31 for raptors. However, with implementation of biological
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 16 DECEMBER 2022
resource protection measures to protect indirect impacts to nesting birds (BIO-3), the impacts will be less than
significant.
Long-term adverse impacts to wildlife, such as predation by urban pest species (e.g., American crows (Corvus
brachyrhynchos), raccoons, striped skunks) and human presence, would likely occur despite the design of a
consolidated preserve.
Mitigation and Biological Resource Protection Measures
The development of disturbed habitat will require mitigation in the form of an in-lieu mitigation fee to fund the
acquisition of the MHCP core area.
Additionally, a number of biological resource protection measures or conditions are required in order to protect
nesting birds and special-status species from direct and indirect impacts. These measures are provided for direct
and indirect impacts as summarized below.
Mitigation and Restoration for Direct Impacts
Mitigation Fee
Vegetation communities or land covers that do not require mitigation or that are not proposed to be impacted are
not included. There is one land cover type within the proposed development footprint that requires a mitigation fee:
disturbed habitat.
BIO-1 Mitigation requirements for permanent impacts are set forth in the Carlsbad HMP and mitigation
fee will be paid for impacts to disturbed habitat in accordance with these requirements.
On-Site Native Habitat Restoration
Areas that will likely need to be restored within the 100-foot wetland buffer, in accordance with the City’s HMP
Coastal Policy 7-11, are currently non-native woodland and disturbed habitat dominated by non-native invasive
species. Some of these areas are in direct proximity to existing native habitat and will be highly suitable for
restoration to native habitat. It is envisioned that the restoration area can be restored to native habitat within the
year and may require monitoring for the standard 5-year period.
BIO-2 The applicant may be requested to submit a final habitat restoration and monitoring plan as well
as specifications for restoration activities within the 100-foot wetland buffer to the City and/or
Agencies for review at least 30 days prior to initiating project impacts. If so, the Restoration
Landscape Plan shall be prepared and implemented consistent with MHCP Volume II, Appendix C
(Revegetation Guidelines), and Vol. III; HMP pp. F-8 to F-11; and Open Space Management Plan
Sec. 3.1.5. The Restoration Landscape Plan should, at a minimum, include an evaluation of
restoration suitability specific to proposed habitat types, soil and plant material
salvage/translocation, planting and seeding lists, discussion of irrigation, maintenance and
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 17 DECEMBER 2022
monitoring program, and success criteria. All areas should be monitored for a minimum of 5 years
to ensure establishment of intended plant communities.
Restoration techniques, as specified in the Restoration Landscape Plan, may include planting,
hydroseeding, hand-seeding, imprinting, and soil and plant salvage. It shall also include criteria to
measure success and describe how monitoring of revegetation efforts will be implemented.
The Restoration Landscape Plan shall also include a description of appropriate plantings within the
25-foot public access easement and the fire management zone (if applicable). Allowable plantings
include native, low fuel species that do not require long-term irrigation.
Biological Resource Protection Measures for Indirect Impacts
Biological Resource Protection Measures to Avoid Indirect Impacts to Nesting
Birds
BIO-3 Clearing and grading activities should be avoided during the bird breeding season (February 15 –
September 15) to reduce indirect impacts will occur to nesting birds that may be present within the
construction footprint or restoration areas. Other construction activities will also be avoided during
the breeding season, if feasible. If this cannot be avoided, the following measures will be taken:
▪ Nesting bird surveys will be conducted by a qualified biologist in appropriate habitat for nesting
raptors and migratory birds and within a 500-foot survey buffer within three days of construction.
▪ If nests of listed birds, migratory birds, raptors, or other special-status species are located, they
will be fenced with a protective buffer of at least 500 feet from active nests of listed species
or raptors Buffer width for other species will be determined by a qualified biologist in
consultation with the city, depending on species, nest location, and other applicable criteria.
All construction activity will be prohibited within this area. Reduced buffers can be requested
from the City if the project biologist can demonstrate that the nesting success will not be
affected.
Additional Biological Resource Protection Measures to Reduce Indirect
Impacts
BIO-4 The potential for significant indirect impacts during construction should be reduced through
implementation of the following standard measures as stated in the City’s Biology Guidelines and
Grading and Landscaping Requirements.
• The footprint of disturbance shall be specified in the construction plans. Construction limits will
be delineated with orange fencing, and in areas potentially subject to project related runoff,
silt fencing will be used to delineate the impact footprint. All fencing will be maintained until
the completion of all construction activities, at which time all fencing will be removed. All
construction personnel and associates shall be instructed that their activities, vehicles,
equipment, and construction materials are restricted to the proposed project footprint,
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TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 18 DECEMBER 2022
designated staging areas, and routes of travel. If any impacts shall occur beyond the approved
impact footprint, all work in the immediate vicinity shall cease until the disturbance limit breach
has been addressed to the satisfaction of the City.
• The qualified project biologist shall review grading plans (e.g., all access routes and staging
areas), and monitor construction activities throughout the duration of grading/ground
disturbance associated with the project to ensure that all practicable measures are being
employed to avoid incidental disturbance of habitat and any target species of concern outside
the project footprint.
• Any habitat that is impacted that is not in the identified project footprint shall be disclosed
immediately to the City, USFWS, CDFW, and CCC and shall be compensated at a minimum ratio
of 5:1.
• Construction employees will limit their activities, vehicles, equipment, and construction
materials to the fenced project footprint.
• Equipment storage, fueling, and staging areas shall be located on disturbed upland sites with
minimal risk of direct drainage into riparian areas or other sensitive habitats, and at least 100
feet from waters of the United States. These designated areas shall be located in such a
manner as to prevent any runoff from entering sensitive habitat. All necessary precautions shall
be taken to prevent the release of cement or other toxic substances into surface waters. All
project-related spills of hazardous materials shall be reported to the City and shall be cleaned
up immediately and contaminated soils removed to approved disposal areas.
• Lighting in or adjacent to the preserve will not be used, except where essential for roadway, facility
use, and safety. If nighttime construction lights are necessary, all lighting adjacent to natural habitat
will be shielded and/or directed away from habitat.
• Fugitive dust will be avoided and minimized through watering and other appropriate measures.
• Exotic species that prey upon or displace target species of concern should be permanently
removed from the site.
• To avoid attracting predators of the native wildlife species, the project site shall be kept as
clean of debris as possible. All food related trash items shall be enclosed in sealed containers
and regularly removed from the site(s). Pets of project personnel shall not be allowed on site
where they may come into contact with any native species.
• The City of Carlsbad has the right to access and inspect any sites of approved projects including
any restoration/enhancement area for compliance with project approval conditions including
these BMPs. The USFWS and CDFW may accompany City representatives on this inspection.
• Grading activity shall be prohibited during the rainy season: from October 1st through April 1st
of each year.
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 19 DECEMBER 2022
• All graded areas shall be landscaped prior to October 1st of each year with either temporary or
permanent landscaping materials, to reduce erosion potential. Such landscaping shall be
maintained and replanted if not well-established by December 1st following the initial planting.
• The October 1st grading season deadline may be extended with the approval of the City
Engineer subject to implementation by October 1st of special erosion control measures
designed to prohibit discharge of sediments off-site during and after the grading operation.
Extensions beyond November 15th may be allowed in areas of very low risk of impact to
sensitive coastal resources and may be approved either as part of the original coastal
development permit or as an amendment to an existing coastal development permit.
• If any of the responsible resource agencies prohibit grading operations during the summer
grading period in order to protect endangered or rare species or sensitive environmental
resources, then grading activities may be allowed during the winter by a coastal development
permit or permit amendment, provided that appropriate best management practices are
adopted.
Adjacency Standards
BIO-5 In order to prevent impacts of the proposed development on the HMP preserve area off site and to the
north and northwest of the project site, the proposed project would comply with the adjacency standards
outlined in the Carlsbad HMP.
Fire Management
If a fire management plan is required, existing non-native plants may need to be removed and
replaced with native species. This will reduce the risk from fire through reduction in adjacent fuel
loads. A FMZ B-3 will be established from the structures outward and shall be maintained to be
clear of dead and dying combustible material.
Erosion Control
Erosion control, for some areas of the City, is needed where there are erodible soils, steep slopes,
soils with low water-holding capacity, sparse to no vegetation, and hydrologic soil conditions.
Standard BMPs will be implemented to slow surface flow and dampen initial precipitation flow in the
development area. In addition, no new surface drainage is proposed to be directed into the open
space areas.
Landscaping Restrictions
Landscape practices may be of concern where landscaping is in conflict with the management and
maintenance of undeveloped areas. Landscape planting palettes for the proposed project will
prohibit non-native, invasive plant species in the areas adjacent to the riparian or upland habitat
or adjacent to the HMP preserve off site to the north or northwest. In addition, because the site is
within the Coastal Zone, no invasive plant species will be used in the landscaping of the
development. These plant species are identified in the Carlsbad HMP but the list of invasive species
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 20 DECEMBER 2022
that will be avoided is not limited to the species on the Carlsbad HMP list. Irrigation of the
landscaping will be designed and scheduled to avoid runoff into the proposed open space. This will
also prevent movement of fertilizer and pesticides into the open space area. The wetland buffer
will be restored with native habitat (refer to BIO-2).
Fencing, Signs, and Lighting
To prevent entry into the riparian habitat (open space area protected by the restrictive covenant)
by people and pets, the area will be fenced in accordance with requirements of the City and
resource agencies and as appropriate. Signs will be attached to the fence at intermittent intervals
to alert the residents of the sensitive nature of the open space area. A trail is proposed to be located
at the bottom of the slope within the 25-foot access easement and fencing may be necessary to
preclude people from passing beyond the trail into the habitat. No lighting is proposed for the areas
adjacent to the HMP preserve or the riparian habitat. Lighting that may potentially intrude into the
riparian habitat will be shielded or directed away from the open space area.
Predator and Exotic Species Control
Similar to the issue for landscaping described previously, there are concerns related to non-
native species when native areas are adjacent to development areas. The property owner of the
proposed development will alert the residents to the potential effects that domestic animals may
have on the native fauna and flora. The riparian habitat will be fenced to discourage the entry of
domestic animals into the open space.
Summary
The majority of the project site consists of disturbed habitat and non-native woodland. There is a clear distinction
between the lagoon and the upland slope. The dense cattail marsh area along the western border of the site will
remain an undisturbed and functional part of the Buena Vista Lagoon. This portion of the project site has potential
to support wildlife species, including special-status species that are associated with the overall lagoon habitat.
However, based on the steep slopes and other highly disturbed areas on site, the potential for species to occur
outside of the lagoon is low. The proposed project is located outside of the lagoon and associated 100-foot buffer.
The wetland buffer will be restored with native plants, and the project will be conditioned to record an Open Space
Easement over the entire buffer area. All direct and indirect impacts are reduced through implementation of
biological resource protection measures as well as an in-lieu mitigation fee.
If you have any questions regarding the content of this report, please contact me at scarey@dudek.com.
Sincerely,
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 21 DECEMBER 2022
__________________________
Shana Carey
Biologist
Att.: Figures 1–4
Appendix A, Plant Compendium
Appendix B, Wildlife Compendium
Appendix C, Special-Status Plant Species Potential to Occur On Site
Appendix D, Special-Status Wildlife Species Potential to Occur On Site
References Cited
14 CCR 15000–15387 and Appendices A–L. Guidelines for Implementation of the California Environmental
Quality Act, as amended.
16 U.S.C. 1531–1599. Federal Endangered Species Act, as amended
16 U.S.C. 668–668d. Bald and Golden Eagle Protection Act, as amended.
16 U.S.C. 703–712. Migratory Bird Treaty Act, as amended.
ACOE (U.S. Army Corps of Engineers). 1987. Corps of Engineers Wetland Delineation Manual. Online ed.
Environmental Laboratory, Wetlands Research Program Technical Report &-87-1. Vicksburg, Mississippi:
U.S. Army Engineer Waterways Experiment Station. January 1987. Accessed December 2021.
ACOE and EPA (U.S. Environmental Protection Agency). 2008. “Clean Water Act Jurisdiction Following the U.S.
Supreme Court’s Decision in Rapanos v. United States & Carabell v. United States.” December 2, 2008.
http://water.epa.gov/lawsregs/guidance/wetlands/
upload/2008_12_3_wetlands_CWA_Jurisdiction_Following_Rapanos120208.pdf.
CDFW. 2021. Rarefind. Version 5.2.14. CDFW, California Natural Diversity Database (CNDDB). Accessed
December 2021.
California Fish and Game Code, Section 3503–3513. General Bird Provisions.
California Fish and Game Code, Section 4700. Fully Protected Mammals.
California Water Code Division 7, Sections 13000–16104. Porter–Cologne Water Quality Control Act.
CERES (California Environmental Resources Evaluation System). 2010. California Coastal Act. California Public
Resources Code. Division 20. California Coastal Act. Accessed December 2021.
http://www.coastal.ca.gov/coastact.pdf.
DUDEK
TO: MR. AND MRS. MARTIN
SUBJECT: BIOLOGICAL RESOURCES LETTER REPORT FOR THE MARTIN RESIDENCE (APN 155-221-05-00; LOT 5) ON
BUENA VISTA CIRCLE IN THE CITY OF CARLSBAD, CALIFORNIA
13764 22 DECEMBER 2022
City of Carlsbad. 2004. Habitat Management Plan for Natural Communities in the City of Carlsbad. Approved in
December 1999, finalized in November 2004.
City of Carlsbad. 2008. Guidelines for Biological Studies. Prepared by Technology Associates. San Diego,
California: Technology Associates. September 30, 2008. Accessed December 2021.
http://www.carlsbadca.gov/civicax/filebank/blobdload.aspx?BlobID=24331.
CNPS. 2018. Inventory of Rare and Endangered Plants of California (online edition, v8-03 0.39). Website
http://www.rareplants.cnps.org [accessed December 2021].
Google Earth. 2021. “570/580 Laguna Drive” [photo map].
Holland, R.F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California. Nongame-
Heritage Program, California Department of Fish and Game. October 1986.
Oberbauer, T., M. Kelly, and J. Buegge. 2008. Draft Vegetation Communities of San Diego County. March 2008.
Accessed December 2021. http://www.sdcanyonlands.org/pdfs/ veg_comm_sdcounty_2008_doc.pdf.
USDA (U.S. Department of Agriculture). 2021. Web Soil Survey. Soil Survey Staff, Natural Resources Conservation
Service, U.S. Department of Agriculture. Accessed December 2021.
https://websoilsurvey.sc.egov.usda.gov/.
USFWS (U.S. Fish and Wildlife Service). 2021. Critical Habitat and Occurrence Data. www.fws.gov/data.
DUDEK
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Project Location
Martin Residence Project
SOURCE: USGS 7.5-minute San Luis Rey QuadrangleTownship 12S / Range 5W / Section 01
02,0001,000 Feet
Project Boundary
FIGURE 1
Chula Vista
Solana Beach
Encinitas
San Diego
Carlsbad
Oceanside
Lemon Grove
La Mesa
El Cajon
Santee
Poway
SanMarcos
Escondido
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DUDEK 6
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CITY OF OCEANSIDE
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Regional Context
Martin Residence Project
SOURCE: City Carlsbad; City Oceanside; California Coastal Commission; SanGIS; NAIP 2020
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Project Site
Coastal Zone
Municipal Boundaries
Oceanside Habitat Conservation Overlay Zones
Softline Preserve
Hardline Preserve
Carlsbad HMP
Existing Hardline
Carlsbad Focused Planning Areas
CORE #1
FIGURE 2
\ \ \ \
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DUDEK 6
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DH
CVFM
EUC
Biological Resources
Martin Residence Project
SOURCE: SANGIS 2020, 2022
05025Feet
Project Site
25-foot Lateral Public Access Easement
Vegetation Communities and Land Cover Types
CVFM, Coastal and Valley Freshwater Marsh
DH, Disturbed Habitat
EUC, Eucalyptus Woodland
ACOE/RWQCB/CDFW/CCC Wetland
Wetland 100-Foot Buffer
FIGURE 3
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DUDEK 6
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SOURCE: PLSA 2022; SANGIS 2020, 2022
05025Feet
Project Site
Limits of Grading
FMZ B-1
FMZ B-2
FMZ B-3
Open Space
25-Foot Lateral Public Access Easement
Vegetation Communities and Land Cover Types
CVFM, Coastal and Valley Freshwater Marsh
DH, Disturbed Habitat
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Wetland 100-Foot Buffer
FIGURE 4
65’
CS)
D
• ,--__ ,
DUDEK .
APPENDIX A
Plant Compendium
13764
A-1 December 2022
VASCULAR SPECIES
MONOCOTS
ARECACEAE – PALM FAMILY
* Phoenix canariensis – Canary Island date palm
ASPARAGACEAE – ASPARAGUS FAMILY
* Asparagus asparagoides – African asparagus fern
POACEAE – GRASS FAMILY
Distichlis spicata – salt grass
* Bromus diandrus – ripgut brome
* Bromus madritensis – compact brome
* Cynodon dactylon – Bermuda grass
* Cenchrus setaceus – African fountain grass
TYPHACEAE – CATTAIL FAMILY
Typha latifolia – broadleaf cattail
EUDICOTS
AIZOACEAE – FIG-MARIGOLD FAMILY
* Carpobrotus edulis – ice plant
AMARANTHACAEA – AMARANTH FAMILY
Rhus ovata – sugar bush
ANACARDIACEAE – SUMAC OR CASHEW FAMILY
* Schinus terebinthifolius – Brazilian peppertree
ASTERACEAE – SUNFLOWER FAMILY
Ambrosia psilostachya – western ragweed
Jaumea carnosa – fleshy jaumea
BIGNONIACEAE – BIGNONIA FAMILY
* Tecoma capensis – Cape honeysuckle
CHENOPODIACEAE – GOOSEFOOT FAMILY
* Salsola tragus – prickly Russian thistle
DUDEK
APPENDIX A (Continued)
13764
A-2 December 2022
CRASSULACEAE – STONECROP FAMILY
* Crassula ovata – jade plant
FABACEAE – LEGUME FAMILY
* Acacia redolens – vanilla scented wattle
MALVACEAE – MALLOW FAMILY
* Malva parviflora – cheeseweed mallow
MYRTACEAE – MYRTLE FAMILY
* Euc sp. – Eucalyptus
OXALIDACEAE – OXALIS FAMILY
* Oxalis pes-caprae – Bermuda buttercup
* signifies introduced (non-native) species
DUDEK
APPENDIX B
Wildlife Compendium
13764
B-1 December 2022
BIRD
BUSHTITS
AEGITHALIDAE – LONG-TAILED TITS AND BUSHTITS
Psaltriparus minimus – bushtit
FRINGILLIDAE – FRINGILLINE & CARDUELINE FINCHES & ALLIES
Haemorhous mexicanus – house finch
Spinus psaltria – lesser goldfinch
HUMMINGBIRDS
TROCHILIDAE – HUMMINGBIRDS
Calypte anna – Anna’s hummingbird
TERNS AND GULLS
CORVIDAE – CROWS & JAYS
Corvus brachyrhynchos – American crow
NEW WORLD SPARROWS
PASSERELLIDAE – NEW WORLD SPARROWS
Melospiza melodia – song sparrow
DUDEK
APPENDIX B (Continued)
13764
B-2 December 2022
INTENTIONALLY LEFT BLANK
DUDEK
APPENDIX C
Special-Status Plant Species Potential to Occur On Site
13764
C-1 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Abronia maritima red sand-
verbena
None/None/4.2 None Coastal dunes/perennial herb/Feb–
Nov/0–330
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Abronia villosa var.
aurita
chaparral sand-
verbena
None/None/1B.1 None Chaparral, Coastal scrub, Desert
dunes; sandy/annual herb/(Jan)Mar–
Sep/246–5,245
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Acanthomintha
ilicifolia
San Diego
thorn-mint
FT/SE/1B.1 List 2;
Narrow
Endemic
Chaparral, Coastal scrub, Valley and
foothill grassland, Vernal pools; Clay,
openings/annual herb/Apr–June/
33–3,145
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Acmispon
prostratus
Nuttall’s
acmispon
None/None/1B.1 None Coastal dunes, Coastal scrub
(sandy)/annual herb/
Mar–June(July)/0–35
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Adolphia
californica
California
adolphia
None/None/2B.1 None Chaparral, Coastal scrub, Valley and
foothill grassland; Clay/perennial
deciduous shrub/Dec–May/33–2,425
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Not detected
during survey.
Agave shawii var.
shawii
Shaw’s agave None/None/2B.1 None Coastal bluff scrub, Coastal scrub;
Maritime succulent scrub/perennial
leaf succulent/Sep–May/10–395
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Allium marvinii Yucaipa onion None/None/1B.2 None Chaparral (clay, openings)/perennial
bulbiferous herb/
Apr–May/2,490–3,490
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-2 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Ambrosia pumila San Diego
ambrosia
FE/None/1B.1 List 2;
Narrow
Endemic
Chaparral, Coastal scrub, Valley and
foothill grassland, Vernal pools; sandy
loam or clay, often in disturbed areas,
sometimes alkaline/perennial
rhizomatous herb/
Apr–Oct/66–1,360
Not expected to occur. No
suitable vegetation present.
Low potential to occur. This
species is tolerant of
disturbed areas; however,
the existing soils and high
cover of ornamental
vegetation would make this
occurrence highly unlikely.
Aphanisma
blitoides
aphanisma None/None/1B.2 None Coastal bluff scrub, Coastal dunes,
Coastal scrub; sandy or
gravelly/annual herb/Feb–June/3–
1,000
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Arctostaphylos
glandulosa ssp.
crassifolia
Del Mar
manzanita
FE/None/1B.1 List 3;
Narrow
Endemic
Chaparral (maritime, sandy)/perennial
evergreen shrub/Dec–June/0–1,195
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Arctostaphylos
rainbowensis
Rainbow
manzanita
None/None/1B.1 None Chaparral/perennial evergreen
shrub/Dec–Mar/
673–2,195
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Artemisia palmeri San Diego
sagewort
None/None/4.2 None Chaparral, Coastal scrub, Riparian
forest, Riparian scrub, Riparian
woodland; sandy, mesic/perennial
deciduous shrub/(Feb)May–Sep/49–
3,000
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Asplenium
vespertinum
western
spleenwort
None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub; rocky/perennial
rhizomatous herb/Feb–June/591–
3,280
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Astragalus tener
var. titi
coastal dunes
milk-vetch
FE/SE/1B.1 None Coastal bluff scrub (sandy), Coastal
dunes, Coastal prairie (mesic); often
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-3 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
vernally mesic areas/annual herb/
Mar–May/3–165
Atriplex coulteri Coulter’s
saltbush
None/None/1B.2 None Coastal bluff scrub, Coastal dunes,
Coastal scrub, Valley and foothill
grassland; alkaline or clay/perennial
herb/
Mar–Oct/10–1,505
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Atriplex pacifica South Coast
saltscale
None/None/1B.2 None Coastal bluff scrub, Coastal dunes,
Coastal scrub, Playas/annual
herb/Mar–Oct/0–460
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Baccharis
vanessae
Encinitas
baccharis
FT/SE/1B.1 List 3;
Narrow
Endemic
Chaparral (maritime), Cismontane
woodland; sandstone/perennial
deciduous shrub/Aug,Oct,Nov/
197–2,360
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Bloomeria
clevelandii
San Diego
goldenstar
None/None/1B.1 Narrow
Endemic
Chaparral, Coastal scrub, Valley and
foothill grassland, Vernal pools;
clay/perennial bulbiferous herb/
Apr–May/164–1,525
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Brodiaea filifolia thread-leaved
brodiaea
FT/SE/1B.1 Covered;
Narrow
Endemic
Chaparral (openings), Cismontane
woodland, Coastal scrub, Playas,
Valley and foothill grassland, Vernal
pools; often clay/perennial bulbiferous
herb/Mar–June/82–3,670
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Brodiaea orcuttii Orcutt’s
brodiaea
None/None/1B.1 Narrow
Endemic
Closed-cone coniferous forest,
Chaparral, Cismontane woodland,
Meadows and seeps, Valley and
foothill grassland, Vernal pools; mesic,
clay/perennial bulbiferous herb/May–
July/98–5,550
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
DUDEK
APPENDIX C (Continued)
13764 C-4 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Calandrinia
breweri
Brewer’s
calandrinia
None/None/4.2 None Chaparral, Coastal scrub; sandy or
loamy, disturbed sites and
burns/annual herb/(Jan)Mar–June/33–
4,000
Not expected to occur. No
suitable vegetation present.
Low potential to occur. This
perennial species is
tolerant of disturbed areas,
however was not observed
during survey and the high
cover of ornamental
vegetation would make this
occurrence highly unlikely.
Calochortus
plummerae
Plummer’s
mariposa lily
None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub, Lower montane
coniferous forest, Valley and foothill
grassland; granitic, rocky/perennial
bulbiferous herb/May–July/
328–5,575
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Camissoniopsis
lewisii
Lewis’ evening-
primrose
None/None/3 None Coastal bluff scrub, Cismontane
woodland, Coastal dunes, Coastal
scrub, Valley and foothill grassland;
sandy or clay/annual herb/Mar–
May(June)/0–985
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Caulanthus
simulans
Payson’s
jewelflower
None/None/4.2 None Chaparral, Coastal scrub; sandy,
granitic/annual herb/
(Feb)Mar–May(June)/295–7,215
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Ceanothus
cyaneus
Lakeside
ceanothus
None/None/1B.2 None Closed-cone coniferous forest,
Chaparral/perennial evergreen
shrub/Apr–June/771–2,475
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-5 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Ceanothus
verrucosus
wart-stemmed
ceanothus
None/None/2B.2 List 2 Chaparral/perennial evergreen
shrub/Dec–May/3–1,245
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Centromadia parryi
ssp. australis
southern
tarplant
None/None/1B.1 None Marshes and swamps (margins),
Valley and foothill grassland (vernally
mesic), Vernal pools/annual herb/
May–Nov/0–1,570
Low potential to occur.
Suitable marsh habitat is
densely vegetated with
broadleaf cattail allowing
little room for growth of
other species. Not detected
during survey.
Not expected to occur. No
suitable vegetation present.
Centromadia
pungens ssp.
laevis
smooth tarplant None/None/1B.1 None Chenopod scrub, Meadows and
seeps, Playas, Riparian woodland,
Valley and foothill grassland;
alkaline/annual herb/Apr–Sep/0–2,095
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Chaenactis
glabriuscula var.
orcuttiana
Orcutt’s
pincushion
None/None/1B.1 None Coastal bluff scrub (sandy), Coastal
dunes/annual herb/Jan–Aug/0–330
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Chamaebatia
australis
southern
mountain
misery
None/None/4.2 None Chaparral (gabbroic or
metavolcanic)/perennial evergreen
shrub/Nov–May/984–3,345
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Chorizanthe
orcuttiana
Orcutt’s
spineflower
FE/SE/1B.1 Covered;
Narrow
Endemic
Closed-cone coniferous forest,
Chaparral (maritime), Coastal scrub;
sandy openings/annual herb/
Mar–May/10–410
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Chorizanthe
polygonoides var.
longispina
long-spined
spineflower
None/None/1B.2 None Chaparral, Coastal scrub, Meadows
and seeps, Valley and foothill
grassland, Vernal pools; often
clay/annual herb/Apr–July/98–5,015
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Cistanthe maritima seaside
cistanthe
None/None/4.2 None Coastal bluff scrub, Coastal scrub,
Valley and foothill grassland;
sandy/annual herb/(Feb)Mar–
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-6 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
June(Aug)/
16–985
Comarostaphylis
diversifolia ssp.
diversifolia
summer holly None/None/1B.2 List 3 Chaparral, Cismontane
woodland/perennial evergreen
shrub/Apr–June/98–2,590
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Convolvulus
simulans
small-flowered
morning-glory
None/None/4.2 None Chaparral (openings), Coastal scrub,
Valley and foothill grassland; clay,
serpentinite seeps/annual herb/
Mar–July/98–2,425
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Corethrogyne
filaginifolia var.
linifolia
Del Mar Mesa
sand aster
None/None/1B.1 List 3;
Narrow
Endemic
Coastal bluff scrub, Chaparral
(maritime, openings), Coastal scrub;
sandy/perennial herb/
May,July,Aug,Sep/49–490
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Cryptantha
wigginsii
Wiggins’
cryptantha
None/None/1B.2 None Coastal scrub; often clay/annual
herb/Feb–June/66–900
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Deinandra
paniculata
paniculate
tarplant
None/None/4.2 None Coastal scrub, Valley and foothill
grassland, Vernal pools; usually
vernally mesic, sometimes
sandy/annual herb/(Mar)Apr–
Nov(Dec)/82–3,080
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Dichondra
occidentalis
western
dichondra
None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub, Valley and foothill
grassland/perennial rhizomatous
herb/(Jan)Mar–July/164–1,640
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Dudleya
blochmaniae ssp.
blochmaniae
Blochman’s
dudleya
None/None/1B.1 Narrow
Endemic
Coastal bluff scrub, Chaparral, Coastal
scrub, Valley and foothill grassland;
rocky, often clay or
serpentinite/perennial herb/Apr–
June/16–1,475
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
DUDEK
APPENDIX C (Continued)
13764 C-7 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Dudleya
multicaulis
many-stemmed
dudleya
None/None/1B.2 None Chaparral, Coastal scrub, Valley and
foothill grassland; often clay/perennial
herb/Apr–July/49–2,590
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Dudleya variegata variegated
dudleya
None/None/1B.2 None Chaparral, Cismontane woodland,
Coastal scrub, Valley and foothill
grassland, Vernal pools; clay/perennial
herb/Apr–June/10–1,900
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Dudleya viscida sticky dudleya None/None/1B.2 List 2 Coastal bluff scrub, Chaparral,
Cismontane woodland, Coastal scrub;
rocky/perennial herb/May–June/33–
1,800
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Ericameria palmeri
var. palmeri
Palmer’s
goldenbush
None/None/1B.1 None Chaparral, Coastal scrub;
mesic/perennial evergreen
shrub/(July)Sep–Nov/98–1,965
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Eryngium
aristulatum var.
parishii
San Diego
button-celery
FE/SE/1B.1 List 3;
Narrow
Endemic
Coastal scrub, Valley and foothill
grassland, Vernal pools; mesic/annual
/ perennial herb/Apr–June/66–2,030
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Eryngium
pendletonense
Pendleton
button-celery
None/None/1B.1 None Coastal bluff scrub, Valley and foothill
grassland, Vernal pools; clay, vernally
mesic/perennial herb/
Apr–June(July)/49–360
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Erysimum
ammophilum
sand-loving
wallflower
None/None/1B.2 None Chaparral (maritime), Coastal dunes,
Coastal scrub; sandy,
openings/perennial herb/Feb–June/0–
195
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
DUDEK
APPENDIX C (Continued)
13764 C-8 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Erythranthe diffusa Palomar
monkeyflower
None/None/4.3 None Chaparral, Lower montane coniferous
forest; sandy or gravelly/annual
herb/Apr–June/4,000–6,000
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Euphorbia misera cliff spurge None/None/2B.2 Covered Coastal bluff scrub, Coastal scrub,
Mojavean desert scrub;
rocky/perennial shrub/Dec–
Aug(Oct)/33–1,640
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Ferocactus
viridescens
San Diego
barrel cactus
None/None/2B.1 List 2 Chaparral, Coastal scrub, Valley and
foothill grassland, Vernal
pools/perennial stem succulent/May–
June/
10–1,475
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Githopsis diffusa
ssp. filicaulis
Mission Canyon
bluecup
None/None/3.1 None Chaparral (mesic, disturbed
areas)/annual herb/
Apr–June/1,475–2,295
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Harpagonella
palmeri
Palmer’s
grapplinghook
None/None/4.2 None Chaparral, Coastal scrub, Valley and
foothill grassland; Clay; open grassy
areas within shrubland/annual
herb/Mar–May/66–3,130
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Hazardia orcuttii Orcutt’s
hazardia
None/ST/1B.1 Covered;
Narrow
Endemic
Chaparral (maritime), Coastal scrub;
often clay/perennial evergreen
shrub/Aug–Oct/262–280
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Heterotheca
sessiliflora ssp.
sessiliflora
beach
goldenaster
None/None/1B.1 None Chaparral (coastal), Coastal dunes,
Coastal scrub/perennial herb/Mar–
Dec/0–4,015
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Holocarpha virgata
ssp. elongata
graceful tarplant None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub, Valley and foothill
Not expected to occur. The
site is outside of the
Not expected to occur. The
site is outside of the
DUDEK
APPENDIX C (Continued)
13764 C-9 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
grassland/annual herb/May–Nov/197–
3,605
species’ known elevation
range and there is no
suitable vegetation present.
species’ known elevation
range and there is no
suitable vegetation present.
Hordeum
intercedens
vernal barley None/None/3.2 None Coastal dunes, Coastal scrub, Valley
and foothill grassland (saline flats and
depressions), Vernal pools/annual
herb/Mar–June/16–3,280
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Horkelia truncata Ramona
horkelia
None/None/1B.3 None Chaparral, Cismontane woodland;
clay, gabbroic/perennial herb/May–
June/1,310–4,265
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Isocoma menziesii
var. decumbens
decumbent
goldenbush
None/None/1B.2 None Chaparral, Coastal scrub (sandy, often
in disturbed areas)/perennial
shrub/Apr–Nov/33–445
Not expected to occur. No
suitable vegetation present.
Low potential to occur. This
perennial species is
tolerant of disturbed areas,
however was not observed
during survey and the high
cover of ornamental
vegetation would make this
occurrence highly unlikely.
Iva hayesiana San Diego
marsh-elder
None/None/2B.2 List 3 Marshes and swamps,
Playas/perennial herb/
Apr–Oct/33–1,640
Low potential to occur.
Suitable marsh habitat is
densely vegetated with
broadleaf cattail allowing
little room for growth of
other species. Not detected
during survey.
Not expected to occur. No
suitable vegetation present.
Juglans californica Southern
California black
walnut
None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub, Riparian woodland;
alluvial/perennial deciduous tree/
Mar–Aug/164–2,950
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-10 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Juncus acutus ssp.
leopoldii
southwestern
spiny rush
None/None/4.2 None Coastal dunes (mesic), Meadows and
seeps (alkaline seeps), Marshes and
swamps (coastal salt)/perennial
rhizomatous herb/(Mar)May–June/10–
2,950
Low potential to occur.
Suitable marsh habitat is
densely vegetated with
broadleaf cattail allowing
little room for growth of
other species. Not observed
during survey.
Not expected to occur. No
suitable vegetation or soils
present. Perennial species
not detected during survey.
Lasthenia glabrata
ssp. coulteri
Coulter’s
goldfields
None/None/1B.1 None Marshes and swamps (coastal salt),
Playas, Vernal pools/annual
herb/Feb–June/3–4,000
Absent. Suitable marsh
habitat is densely vegetated
with broadleaf cattail
allowing little room for
growth of other species.
This conspicuous plant was
not detected during survey.
Not expected to occur. No
suitable vegetation or soils
present.
Lepidium
virginicum var.
robinsonii
Robinson’s
pepper-grass
None/None/4.3 None Chaparral, Coastal scrub/annual
herb/Jan–July/3–2,900
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Leptosyne
maritima
sea dahlia None/None/2B.2 None Coastal bluff scrub, Coastal
scrub/perennial herb/
Mar–May/16–490
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Lycium
californicum
California box-
thorn
None/None/4.2 None Coastal bluff scrub, Coastal
scrub/perennial
shrub/(Dec)Mar,June,July,Aug/16–490
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Microseris
douglasii ssp.
platycarpha
small-flowered
microseris
None/None/4.2 None Cismontane woodland, Coastal scrub,
Valley and foothill grassland, Vernal
pools; clay/annual herb/Mar–May/
49–3,510
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation or soils
present.
Monardella
hypoleuca ssp.
lanata
felt-leaved
monardella
None/None/1B.2 None Chaparral, Cismontane
woodland/perennial rhizomatous
herb/June–Aug/984–5,165
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-11 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Myosurus minimus
ssp. apus
little mousetail None/None/3.1 List 3;
Narrow
Endemic
Valley and foothill grassland, Vernal
pools (alkaline)/annual herb/Mar–
June/66–2,095
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Nama stenocarpa mud nama None/None/2B.2 None Marshes and swamps (lake margins,
riverbanks)/annual / perennial
herb/Jan–July/16–1,640
Low potential to occur.
Suitable marsh habitat is
densely vegetated with
broadleaf cattail allowing
little room for growth of
other species. Not detected
during survey.
Not expected to occur. No
suitable vegetation present.
Navarretia fossalis spreading
navarretia
FT/None/1B.1 List 3;
Narrow
Endemic
Chenopod scrub, Marshes and
swamps (assorted shallow
freshwater), Playas, Vernal
pools/annual herb/
Apr–June/98–2,145
Low potential to occur.
Suitable marsh habitat is
densely vegetated with
broadleaf cattail allowing
little room for growth of
other species. Not detected
during survey.
Not expected to occur. No
suitable vegetation present.
Nemacaulis
denudata var.
denudata
coast woolly-
heads
None/None/1B.2 None Coastal dunes/annual herb/Apr–
Sep/0–330
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Nemacaulis
denudata var.
gracilis
slender
cottonheads
None/None/2B.2 None Coastal dunes, Desert dunes,
Sonoran desert scrub/annual
herb/(Mar)Apr–May/-,165–1,310
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Nolina cismontana chaparral nolina None/None/1B.2 None Chaparral, Coastal scrub; sandstone
or gabbro/perennial evergreen
shrub/(Mar)May–July/459–4,180
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range.
Ophioglossum
californicum
California
adder’s-tongue
None/None/4.2 None Chaparral, Valley and foothill
grassland, Vernal pools (margins);
mesic/perennial rhizomatous herb/
(Dec)Jan–June/197–1,720
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
DUDEK
APPENDIX C (Continued)
13764 C-12 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
range and there is no
suitable vegetation present.
Orcuttia californica California Orcutt
grass
FE/SE/1B.1 List 3;
Narrow
Endemic
Vernal pools/annual herb/Apr–
Aug/49–2,165
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Orobanche parishii
ssp. brachyloba
short-lobed
broomrape
None/None/4.2 None Coastal bluff scrub, Coastal dunes,
Coastal scrub; sandy/perennial herb
(parasitic)/Apr–Oct/10–1,000
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Pentachaeta aurea
ssp. aurea
golden-rayed
pentachaeta
None/None/4.2 None Chaparral, Cismontane woodland,
Coastal scrub, Lower montane
coniferous forest, Riparian woodland,
Valley and foothill grassland/annual
herb/Mar–July/262–6,065
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Phacelia stellaris Brand’s star
phacelia
None/None/1B.1 None Coastal dunes, Coastal scrub/annual
herb/Mar–June/
3–1,310
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Pinus torreyana
ssp. torreyana
Torrey pine None/None/1B.2 List 3 Closed-cone coniferous forest,
Chaparral; Sandstone/perennial
evergreen tree/N.A./98–525
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Pogogyne
abramsii
San Diego
mesa mint
FE/SE/1B.1 None Vernal pools/annual herb/Mar–
July/295–655
Not expected to occur. No
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Polygala cornuta
var. fishiae
Fish’s milkwort None/None/4.3 None Chaparral, Cismontane woodland,
Riparian woodland/perennial
deciduous shrub/May–Aug/
328–3,280
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
DUDEK
APPENDIX C (Continued)
13764 C-13 December 2022
Scientific Name
Common
Name
Status
(Federal/State/C
RPR)
Carlsbad
HMP
Primary Habitat Associations/ Life
Form/
Blooming Period/ Elevation Range
(feet)
Potential to Occur in
Wetlands
Potential to Occur in
Uplands
Pseudognaphaliu
m leucocephalum
white rabbit-
tobacco
None/None/2B.2 None Chaparral, Cismontane woodland,
Coastal scrub, Riparian woodland;
sandy, gravelly/perennial herb/
(July)Aug–Nov(Dec)/0–6,885
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Psilocarphus
brevissimus var.
multiflorus
Delta woolly-
marbles
None/None/4.2 None Vernal pools/annual herb/May–
June/33–1,640
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Quercus dumosa Nuttall’s scrub
oak
None/None/1B.1 Covered Closed-cone coniferous forest,
Chaparral, Coastal scrub; sandy, clay
loam/perennial evergreen shrub/
Feb–Apr(May–Aug)/49–1,310
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
Quercus
engelmannii
Engelmann oak None/None/4.2 List 2 Chaparral, Cismontane woodland,
Riparian woodland, Valley and foothill
grassland/perennial deciduous
tree/Mar–June/164–4,265
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Salvia munzii Munz’s sage None/None/2B.2 None Chaparral, Coastal scrub/perennial
evergreen shrub/
Feb–Apr/377–3,490
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Not expected to occur. The
site is outside of the
species’ known elevation
range and there is no
suitable vegetation present.
Selaginella
cinerascens
ashy spike-
moss
None/None/4.1 None Chaparral, Coastal scrub/perennial
rhizomatous herb/N.A./66–2,095
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Senecio
aphanactis
chaparral
ragwort
None/None/2B.2 None Chaparral, Cismontane woodland,
Coastal scrub; sometimes
alkaline/annual herb/Jan–Apr(May)/
49–2,620
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Sidalcea
neomexicana
salt spring
checkerbloom
None/None/2B.2 None Chaparral, Coastal scrub, Lower
montane coniferous forest, Mojavean
desert scrub, Playas; alkaline,
mesic/perennial herb/Mar–June/49–
5,015
Not expected to occur. No
suitable vegetation present.
Not expected to occur. No
suitable vegetation present.
Perennial species not
detected during survey.
DUDEK
APPENDIX C (Continued)
13764 C-14 December 2022
Status Legend:
FE: Federally listed as endangered
FT: Federally listed as threatened
SE: State listed as endangered
ST: State listed as threatened
CRPR 1B: Plants Rare, Threatened, or Endangered in California and Elsewhere
CRPR 2B: Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere
CRPR 3: Plants About Which More Information is Needed - A Review List
CRPR 4: Plants of Limited Distribution - A Watch List
1 Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat)
2 Moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat)
3 Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known)
Other Designations
Carlsbad HMP:
Covered: Species covered under the Carlsbad HMP
Narrow Endemic: Species confined to a specific geographic region, soil type, and/or habitat
DUDEK
APPENDIX D
Special Status Wildlife Species Potential to Occur On Site
13764
D-1 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Amphibians
Anaxyrus
californicus arroyo toad FE/SSC/NE Semi-arid areas near washes, sandy
riverbanks, riparian areas, palm oasis,
Joshua tree, mixed chaparral and
sagebrush; stream channels for breeding (typically third order); adjacent
stream terraces and uplands for
foraging and wintering
Not
observed
Not expected to occur. No suitable
vegetation present. Site consists
nearly entirely of non-native
vegetation, is highly disturbed, and surrounded by human development.
Not expected to occur. No suitable
vegetation present. Upland consists
entirely of non-native vegetation, is
highly disturbed, and surrounded by human development.
Spea
hammondii
western
spadefoot
None/SSC/None Primarily grassland and vernal pools,
but also in ephemeral wetlands that
persist at least 3 weeks in chaparral,
coastal scrub, valley–foothill
woodlands, pastures, and other
agriculture
Not
observed
Low potential to occur, wetland area
consists of several species of non-
native vegetation as well as one
native species, thick broadleaf cattail
(Typha latifolia). Although there is a
small area of freshwater marsh,
overall the site is heavily sloped so
there is little potential for shallow
temporary pools and therefore
breeding.
Low potential to occur. Upland
vegetation and habitat consists
entirely of non-native vegetation, is
highly disturbed and surrounded by
human development.
Reptiles
Actinemys
marmorata
western pond
turtle
None/SSC/None Slow-moving permanent or intermittent
streams, ponds, small lakes, and
reservoirs with emergent basking sites;
adjacent uplands used for nesting and
during winter
Not
observed
Moderate potential to occur within the
site boundary. The site contains a
small amount of freshwater marsh
habitat associated with a lagoon,
which is known to support pond
turtles (City 2004) but the site lacks
suitable basking sites and open
water.
Low potential to occur in the upland
areas. Adjacent to the upland
habitat is a freshwater marsh
associated with a lagoon.
Anniella
stebbinsi
southern
California legless lizard
None/SSC/None Coastal dunes, stabilized dunes,
beaches, dry washes, valley–foothill, chaparral, and scrubs; pine, oak, and
riparian woodlands; associated with
sparse vegetation and moist sandy or loose, loamy soils
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and site is highly disturbed and
surrounded by human development.
DUDEK
APPENDIX D (Continued)
13764 D-2 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Arizona
elegans
occidentalis
California
glossy snake None/SSC/None Commonly occurs in desert regions
throughout southern California. Prefers
open sandy areas with scattered brush.
Also found in rocky areas.
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and
site is highly disturbed and
surrounded by human development.
Aspidoscelis
hyperythra
orange-
throated whiptail
None/WL/Covere
d
Low-elevation coastal scrub, chaparral,
and valley–foothill hardwood
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and site is highly disturbed and
surrounded by human development.
Aspidoscelis
tigris stejnegeri
San Diegan
tiger whiptail
None/SSC/None Hot and dry areas with sparse foliage,
including chaparral, woodland, and
riparian areas.
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and
site is highly disturbed and
surrounded by human development.
Crotalus ruber red
diamondback
rattlesnake
None/SSC/None Coastal scrub, chaparral, oak and pine
woodlands, rocky grasslands, cultivated
areas, and desert flats
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by human development.
Not expected to occur. Not expected
to occur. No suitable habitat or
vegetation present and site is highly disturbed and surrounded by human
development.
Diadophis
punctatus
similis
San Diego
ringneck snake
None/None/None Moist habitats including wet meadows,
rocky hillsides, gardens, farmland
grassland, chaparral, mixed-conifer
forest, and woodland habitats
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and
site is highly disturbed and
surrounded by human development.
Phrynosoma
blainvillii
Blainville’s
horned lizard
None/SSC/None Open areas of sandy soil in valleys,
foothills, and semi-arid mountains
including coastal scrub, chaparral, valley–foothill hardwood, conifer,
riparian, pine–cypress, juniper, and
annual grassland habitats
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by human development.
Low potential to occur. No suitable
habitat or vegetation present and
site is highly disturbed and surrounded by human development.
Plestiodon
skiltonianus
interparietalis
Coronado
skink
None/WL/None Woodlands, grasslands, pine forests,
and chaparral; rocky areas near water
Not
observed
Not expected to occur. No suitable
habitat or vegetation present and site
is highly disturbed and surrounded by
human development.
Not expected to occur. No suitable
habitat or vegetation present and
site is highly disturbed and
surrounded by human development.
Salvadora
hexalepis virgultea
coast patch-
nosed snake
None/SSC/None Brushy or shrubby vegetation; requires
small mammal burrows for refuge and overwintering sites
Not
observed
Not expected to occur. No suitable
habitat present.
Low potential to occur. Site consists
nearly entirely of disturbed non-native vegetation which provides
cover and foraging opportunities.
DUDEK
APPENDIX D (Continued)
13764 D-3 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Thamnophis
hammondii
two-striped
gartersnake None/SSC/None Streams, creeks, pools, streams with
rocky beds, ponds, lakes, vernal pools
Not
observed
Moderate potential to occur. Site
contains a small area of freshwater
marsh associated with a lagoon, but it
is surrounded by a very disturbed
area. There are some opportunities
for suitable cover and feeding within
the thick broadleaf cattail (Typha
latifolia) and other vegetation in and
around the marsh.
Moderate potential to occur in
upland habitat on site. However, the
site also contains a small area of
freshwater marsh associated with a
lagoon where there are
opportunities for cover and feeding
Thamnophis
sirtalis ssp.
(Coastal plain
from Ventura
Co. to San
Diego Co., from sea level to
about 850 m.)
south coast
garter snake
None/SSC/None Marsh and upland habitats near
permanent water and riparian
vegetation
Not
observed
Moderate potential to occur. Site is
heavily disturbed but contains a small
amount of freshwater marsh habitat
dominated by broadleaf cattail (Typha
latifolia) plus several other types of
non-native vegetation for cover and feeding.
Moderate potential to occur. Upland
habitat consists of non-native
vegetation which provides habitat,
cover, and opportunities for
foraging. Adjacent freshwater marsh
habitat on site as well.
Birds
Accipiter
cooperii
(nesting)
Cooper’s hawk None/WL/Covere
d
Nests and forages in dense stands of
live oak, riparian woodlands, or other
woodland habitats often near water
Not
observed
Not expected to occur. No suitable
habitat present.
Low potential to occur and not
expected to nest on site as project
site is very small and surrounded by
human development. However,
opportunities for foraging and
perching.
Agelaius
tricolor (nesting
colony)
tricolored
blackbird
BCC/PSE,
SSC/None
Nests near freshwater, emergent
wetland with cattails or tules, but also in
Himalayan blackberrry; forages in
grasslands, woodland, and agriculture
Not
observed
Moderate potential to occur. The
small amount of freshwater marsh
habitat on site may provide nesting
and feeding opportunities but it is surrounded by disturbed and
developed lands.
Low potential to occur in disturbed
non-native upland habitat, but may
reside nearby in the freshwater
lagoon.
Aimophila
ruficeps
canescens
Southern
California
rufous-crowned
sparrow
None/WL/Covere
d
Nests and forages in open coastal
scrub and chaparral with low cover of
scattered scrub interspersed with rocky
and grassy patches
Not
observed
Not expected to occur. No suitable
habitat or vegetation present.
Low potential to occur. No suitable
habitat or vegetation present, site is
also disturbed and largely
surrounded by urban development.
DUDEK
APPENDIX D (Continued)
13764 D-4 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Aquila
chrysaetos
(nesting and
wintering)
golden eagle BCC/FP,
WL/None
Nests and winters in hilly, open/semi-
open areas, including shrublands,
grasslands, pastures, riparian areas,
mountainous canyon land, open desert
rimrock terrain; nests in large trees and
on cliffs in open areas and forages in
open habitats
Not
observed
Not expected to occur. No suitable
habitat vegetation present.
Not expected to occur. Not enough
open habitat on site or surrounding
area to support nesting or foraging
of long-term residents.
Artemisiospiza
belli belli
Bell’s sage
sparrow
BCC/WL/None Nests and forages in coastal scrub and
dry chaparral; typically in large, unfragmented patches dominated by
chamise; nests in more dense patches
but uses more open habitat in winter
Not
observed
Not expected to occur. No suitable
habitat or vegetation present.
Not expected to occur. No suitable
habitat or vegetation present and site is highly disturbed and
surrounded by human development.
Buteo
swainsoni
(nesting)
Swainson’s
hawk
BCC/ST/None Nests in open woodland and savanna,
riparian, and in isolated large trees;
forages in nearby grasslands and
agricultural areas such as wheat and
alfalfa fields and pasture
Not
observed
Species does not nest in Southern
California. No suitable foraging
habitat on site.
Species does not nest in Southern
California. No suitable foraging
habitat on site.
Campylorhynch
us
brunneicapillus
sandiegensis (San Diego and
Orange
Counties only)
coastal cactus
wren
BCC/SSC/None Southern cactus scrub patches Not
observed
Not expected to occur. No suitable
habitat or vegetation present.
Not expected to occur. No suitable
habitat or vegetation present.
Charadrius
alexandrinus
nivosus
(nesting)
western snowy
plover
FT, BCC/
SSC/Covered
On coasts nests on sandy marine and
estuarine shores; in the interior nests
on sandy, barren or sparsely vegetated
flats near saline or alkaline lakes,
reservoirs, and ponds
Not
observed
Not expected to occur. Although there
is a freshwater marsh on site, there
are not sandy marine or estuarine
shores, the site is also adjacent to
disturbed and developed areas.
Not expected to occur. Although
adjacent to a freshwater lagoon,
nesting and foraging unlikely as
there are no sandy marine or
estuarine shores on site, the site is
also adjacent to highly disturbed
and developed areas.
DUDEK
APPENDIX D (Continued)
13764 D-5 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Circus
hudsonius
(nesting)
northern harrier None/SSC/None Nests in open wetlands (marshy
meadows, wet lightly-grazed pastures,
old fields, freshwater and brackish
marshes); also in drier habitats
(grassland and grain fields); forages in
grassland, scrubs, rangelands,
emergent wetlands, and other open
habitats
Not
observed
Moderate potential to occur. Nesting
possible within the freshwater marsh
edge as this species nests on the
ground in shrubby vegetation, the
neighboring lagoon also provides
ample foraging and cover
opportunities.
Low potential to occur. Although
there is a freshwater lagoon
adjacent to the site, the balance of
the habitat on site is highly disturbed
and largely surrounded by urban
development creating a low
potential for foraging.
Coccyzus americanus
occidentalis
(nesting)
western yellow-billed cuckoo FT, BCC/SE/None Nests in dense, wide riparian woodlands and forest with well-
developed understories
Not observed
Not expected to occur. No suitable habitat such as riparian woodlands or
forest present.
Not expected to occur. No suitable habitat such as riparian woodlands
or forest present.
Elanus
leucurus
(nesting)
white-tailed kite None/FP/None Nests in woodland, riparian, and
individual trees near open lands;
forages opportunistically in grassland,
meadows, scrubs, agriculture,
emergent wetland, savanna, and
disturbed lands
Not
observed
Low potential to occur. Opportunity
for foraging within freshwater marsh
on site, but low opportunity for
nesting or cover as there are few
large trees with dense canopy cover.
Low potential to occur on site for
nesting; most trees nearby and on
site are small and non-native, the
site is also in a highly disturbed and
urbanized setting. Could fly over to
forage or perch on site or could nest
off site nearby.
Empidonax
traillii extimus (nesting)
southwestern
willow flycatcher
FE/SE/Covered Nests in dense riparian habitats along
streams, reservoirs, or wetlands; uses variety of riparian and shrubland
habitats during migration
Not
observed
Not expected to nest on site. No
suitable habitat such as dense riparian vegetation present, site is
highly disturbed, consists mostly of
non-native vegetation, and is largely surrounded by development.
Not expected to nest on site. No
suitable habitat such as dense riparian vegetation present, site is
highly disturbed, consists mostly of
non-native vegetation, and is largely surrounded by development.
Eremophila
alpestris actia
California
horned lark
None/WL/None Nests and forages in grasslands,
disturbed lands, agriculture, and
beaches; nests in alpine fell fields of the
Sierra Nevada
Not
observed
Not expected to occur. No suitable
habitat for nesting or foraging, site is
also very small and largely
surrounded by urban development.
Not expected to occur. Disturbed
habitat on site is very small and
surrounded by urban development
present.
Icteria virens (nesting) yellow-breasted chat None/SSC/ Covered Nests and forages in dense, relatively wide riparian woodlands and thickets of
willows, vine tangles, and dense brush
Not observed
Moderate potential to occur in the cattail marsh areas. Not expected to occur in the upland area, but could forage if present in
the adjacent marsh habitat.
DUDEK
APPENDIX D (Continued)
13764 D-6 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Ixobrychus
exilis (nesting) least bittern BCC/SSC/None Nests in freshwater and brackish
marshes with dense, tall growth of
aquatic and semi-aquatic vegetation
Not
observed
Moderate potential to occur.
Freshwater marsh on site provides
suitable habitat for nesting and
foraging.
Low potential to occur. Upland
habitat is highly disturbed and lacks
suitable foraging and nesting
opportunities; however adjacent
freshwater marsh may be able to
support nesting and foraging.
Laterallus
jamaicensis
coturniculus
California black
rail
BCC/ST,
FP/None
Tidal marshes, shallow freshwater
margins, wet meadows, and flooded
grassy vegetation; suitable habitats are often supplied by canal leakage in
Sierra Nevada foothill populations
Not
observed
No potential. This species has been
documented as being extirpated from
San Diego County.
No potential. This species has been
documented as being extirpated
from San Diego County.
Passerculus
sandwichensis
beldingi
Belding’s
savannah
sparrow
None/SE/Covered Nests and forages in coastal saltmarsh
dominated by pickleweed (Salicornia
spp.)
Not
observed
Not expected to occur on site; no
suitable foraging or nesting habitat
present.
Not expected to occur on site; no
suitable foraging or nesting habitat
present.
Plegadis chihi
(nesting
colony)
white-faced ibis None/WL/Covere
d
Nests in shallow marshes with areas of
emergent vegetation; winter foraging in
shallow lacustrine waters, flooded
agricultural fields, muddy ground of wet meadows, marshes, ponds, lakes,
rivers, flooded fields, and estuaries
Not
observed
Low potential to occur. Nesting
habitat is present, nest itself is built of
cattails and other marsh plants, a
small amount foraging and cover habitat is also present, however the
site is adjacent to a highly disturbed
and developed area.
Not expected to occur on site; no
suitable foraging or nesting habitat
present. However, low potential to
occur in the adjacent freshwater marsh habitat.
Polioptila
californica
californica
coastal
California
gnatcatcher
FT/SSC/Covered Nests and forages in various sage
scrub communities, often dominated by
California sagebrush and buckwheat;
generally avoids nesting in areas with a
slope of greater than 40%; majority of
nesting at less than 1,000 feet above
mean sea level
Not
observed
Not expected to occur. No suitable
sage scrub habitat or vegetation
present for nesting or foraging.
Not expected to occur. No suitable
sage scrub habitat or vegetation
present for nesting or foraging.
Rallus
obsoletus
levipes
Ridgway’s rail FE/SE,
FP/Covered
Coastal wetlands, brackish areas,
coastal saline emergent wetlands
Not
observed
Moderate potential to occur. Some
foraging and nesting habitat is
present within the dense cattail reeds.
The habitat is small but connected to
a larger lagoon where the species is
known to occur.
Not expected to occur in upland
area as it is highly sloped, disturbed,
and consists of only non-native
vegetation; not conducive for
nesting or foraging. Low potential to
occur in adjacent freshwater marsh
that is connected to larger lagoon.
DUDEK
APPENDIX D (Continued)
13764 D-7 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Riparia riparia
(nesting) bank swallow None/ST/None Nests in riparian, lacustrine, and coastal
areas with vertical banks, bluffs, and
cliffs with sandy soils; open country and
water during migration
Not
observed
Not expected to occur. No suitable
habitat present for nesting, but there
is potential for migratory visits to
adjacent lagoon.
Not expected to occur. No suitable
habitat present for nesting, but there
is potential for migratory visits to
adjacent lagoon.
Setophaga
petechia (nesting)
yellow warbler BCC/SSC/None Nests and forages in riparian and oak
woodlands, montane chaparral, open ponderosa pine, and mixed-conifer
habitats
Not
observed
Not expected to occur. No suitable
habitat or vegetation present for nesting or foraging.
Not expected to occur. No suitable
habitat or vegetation present for nesting or foraging.
Sternula
antillarum
browni (nesting
colony)
California least
tern
FE/SE,
FP/Covered
Forages in shallow estuaries and
lagoons; nests on sandy beaches or
exposed tidal flats
Not
observed
Not expected to occur. Although
adjacent to a lagoon, there is no
suitable habitat or vegetation on site
for nesting or foraging.
Not expected to occur. No suitable
beach, tidal flat, or estuary habitat
for nesting or foraging in upland
habitat on site.
Vireo bellii
pusillus
(nesting)
least Bell’s
vireo
FE/SE/Covered Nests and forages in low, dense
riparian thickets along water or along
dry parts of intermittent streams; forages in riparian and adjacent
shrubland late in nesting season
Not
observed
Not expected to nest on site due to
lack of suitable riparian scrub or
forest habitat. Potential to forage on or near site since it is known to occur
in the area.
Not expected to nest on site due to
lack of suitable riparian scrub or
forest habitat. Potential to forage on or near site since it is known to
occur in the area.
Fish
Eucyclogobius
newberryi
tidewater goby FE/SSC/None Brackish water habitats along the
California coast from Agua Hedionda
Lagoon, San Diego County, to the
mouth of the Smith River
Not
observed
Not expected to occur. No suitable
low-salinity waters required by this
species present on site. This species
inhabits brackish bodies of water and
the habitat on site is freshwater
marsh. Tide water goby are only
expected in lagoons and streams
upstream from lagoons that have tidal
influence. The Buena Vista Lagoon
has no tidal influence.
Not expected to occur. No brackish
water habitat on site.
Gila orcuttii arroyo chub None/SSC/None Warm, fluctuating streams with slow-
moving or backwater sections of warm
to cool streams at depths >40
centimeters (16 inches); substrates of
sand or mud
Not
observed
Not expected to occur. Arroyo chubs
are native to stream systems of the
Los Angeles basin as far south as
southern Orange County.
Not expected to occur. . Arroyo
chubs are native to stream systems
of the Los Angeles basin as far
south as southern Orange County.
DUDEK
APPENDIX D (Continued)
13764 D-8 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Mammals
Antrozous
pallidus
pallid bat None/SSC/None Grasslands, shrublands, woodlands,
forests; most common in open, dry
habitats with rocky outcrops for
roosting, but also roosts in man-made
structures and trees
Not
observed
Not expected to occur. No suitable
open habitat for foraging, and no
outcrops/cliffs for roosting present.
Not expected to occur. No suitable
open habitat for foraging, and no
outcrops/cliffs for roosting present.
Chaetodipus
californicus
femoralis
Dulzura pocket
mouse None/SSC/None Open habitat, coastal scrub, chaparral,
oak woodland, chamise chaparral,
mixed-conifer habitats; disturbance
specialist; 0 to 3,000 feet above mean
sea level
Not
observed
Not expected to occur. No suitable
vegetation such as coastal sage
scrub habitat present, also no
evidence of burrows or friable soils
present.
Not expected to occur. No suitable
vegetation such as coastal sage
scrub habitat present, also no
evidence of burrows or friable soils
present. Site is nearly entirely
surrounded by urban development.
Chaetodipus
fallax fallax
northwestern
San Diego
pocket mouse
None/SSC/None Coastal scrub, mixed chaparral,
sagebrush, desert wash, desert scrub,
desert succulent shrub, pinyon–juniper, and annual grassland
Not
observed
Not expected to occur. No suitable
coastal sage scrub habitat present;
site is also surrounded by highly disturbed habitat and human
development.
Not expected to occur. No suitable
coastal sage scrub habitat present;
site consists of highly disturbed habitat and is surrounded by human
development.
Choeronycteris
mexicana
Mexican long-
tongued bat
None/SSC/None Desert and montane riparian, desert
succulent scrub, desert scrub, and
pinyon–juniper woodland; roosts in
caves, mines, and buildings
Not
observed
Not expected to occur. No suitable
open habitat for foraging, and no
caves/mines for roosting present.
Not expected to occur. No suitable
open habitat for foraging, and no
caves/mines for roosting present.
Corynorhinus
townsendii
Townsend’s
big-eared bat
None/SSC/None Mesic habitats characterized by
coniferous and deciduous forests and
riparian habitat, but also xeric areas; roosts in limestone caves and lava
tubes, man-made structures, and
tunnels
Not
observed
Not expected to occur. No suitable
habitat present. Low potential for
roosting in nearby man-made structures as site is nearby a
developed area.
Not expected to occur. No suitable
habitat present. Low potential for
roosting in nearby man-made structures as site is highly disturbed
and surrounded by human
development.
Dipodomys
stephensi
Stephens’
kangaroo rat
FE/ST/None Annual and perennial grassland
habitats, coastal scrub or sagebrush
with sparse canopy cover, or in
disturbed areas
Not
observed
Not expected to occur. No suitable
vegetation or habitat present.
Low potential to occur. Habitat is
highly disturbed and located within a
highly urbanized setting.
DUDEK
APPENDIX D (Continued)
13764 D-9 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Eumops perotis
californicus
western mastiff
bat None/SSC/None Chaparral, coastal and desert scrub,
coniferous and deciduous forest and
woodland; roosts in crevices in rocky
canyons and cliffs where the canyon or
cliff is vertical or nearly vertical, trees,
and tunnels
Not
observed
Not expected to occur. No suitable
habitat for foraging, and no rocky
canyons/cliffs for roosting present.
Not expected to occur. No suitable
habitat for foraging, and no rocky
canyons/cliffs for roosting present.
Lasiurus
cinereus
hoary bat None/None/None Forest, woodland riparian, and wetland
habitats; also juniper scrub, riparian
forest, and desert scrub in arid areas; roosts in tree foliage and sometimes
cavities, such as woodpecker holes
Not
observed
Not expected to occur. No suitable
habitat or roosting sites present.
Not expected to occur. No suitable
habitat or roosting sites present.
Lasiurus
xanthinus
western yellow
bat
None/SSC/None Valley–foothill riparian, desert riparian,
desert wash, and palm oasis habitats;
below 2,000 feet above mean sea level;
roosts in riparian and palms
Not
observed
Not expected to occur. No suitable
desert riparian habitat present.
Not expected to occur. No suitable
desert riparian habitat present.
Leptonycteris
yerbabuenae
lesser long-
nosed bat
FE/None/None Sonoran desert scrub, semi-desert
grasslands, lower oak woodlands
Not
observed
Not expected to occur. No suitable
habitat (i.e., desert scrub, semi-desert
grassland, or lower oak woodland
habitats) present.
Not expected to occur. No suitable
habitat (i.e., desert scrub, semi-
desert grassland, or lower oak
woodland habitats) present.
Lepus
californicus
bennettii
San Diego
black-tailed
jackrabbit
None/SSC/None Arid habitats with open ground;
grasslands, coastal scrub, agriculture,
disturbed areas, and rangelands
Not
observed
Not expected to occur. No suitable
habitat present.
Not expected to occur. No suitable
vegetation present.
Myotis
yumanensis
Yuma myotis None/None/None Riparian, arid scrublands and deserts,
and forests associated with water (streams, rivers, tinajas); roosts in
bridges, buildings, cliff crevices, caves,
mines, and trees
Not
observed
Not expected to occur. No suitable
habitat present. Low potential for roosting in nearby man-made
structures as they are within a
developed area.
Not expected to occur. No suitable
habitat present. Low potential for roosting in nearby man-made
structures as they are within a
developed area.
Neotoma lepida
intermedia
San Diego
desert woodrat
None/SSC/None Coastal scrub, desert scrub, chaparral,
cacti, rocky areas
Not
observed
Not expected to occur. No suitable
habitat on site.
Not expected to occur. No suitable
habitat on site.
DUDEK
APPENDIX D (Continued)
13764 D-10 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Nyctinomops
femorosaccus
pocketed free-
tailed bat None/SSC/None Pinyon–juniper woodlands, desert
scrub, desert succulent shrub, desert
riparian, desert wash, alkali desert
scrub, Joshua tree, and palm oases;
roosts in high cliffs or rock outcrops with
drop-offs, caverns, and buildings
Not
observed
Not expected to occur. No suitable
habitat (i.e., Pinyon–juniper
woodlands, desert scrub, desert
succulent shrub, desert riparian,
desert wash, alkali desert scrub,
Joshua tree, palm oases) present. No
rocky canyons/cliffs present for
roosting present
Not expected to occur. No suitable
habitat (i.e., Pinyon–juniper
woodlands, desert scrub, desert
succulent shrub, desert riparian,
desert wash, alkali desert scrub,
Joshua tree, palm oases) present.
No rocky canyons/cliffs present for
roosting present
Perognathus longimembris
pacificus
Pacific pocket mouse FE/SSC/NE fine-grained sandy substrates in open coastal strand, coastal dunes, and river
alluvium
Not observed
Not expected to occur. No suitable habitat present. Not expected to occur. No suitable habitat present.
Taxidea taxus American
badger
None/SSC/None Dry, open, treeless areas; grasslands,
coastal scrub, agriculture, and pastures,
especially with friable soils
Not
observed
Not expected to occur. Site is too
small to support this species, is highly
disturbed, and is largely surrounded
by urban development.
Not expected to occur. Site is too
small to support this species, is
highly disturbed, and is largely
surrounded by urban development.
Invertebrates
Branchinecta
lindahli
Versatile Fairy
Shrimp
None/None/None Vernal pools, non-vegetated ephemeral
pools
Not
observed
Not expected to occur. Site lacks
suitable habitat (i.e., vernal pools;
cool-water pools with low to moderate
dissolved solids).
Not expected to occur. Site lacks
suitable habitat (i.e., vernal pools;
cool-water pools with low to
moderate dissolved solids).
Branchinecta
lynchi
vernal pool
fairy shrimp
FT/None/None Vernal pools, seasonally ponded areas
within vernal swales, and ephemeral
freshwater habitats
Not
observed
Not expected to occur. Site lacks
suitable habitat (i.e., vernal pools;
cool-water pools with low to moderate
dissolved solids).
Not expected to occur. Site lacks
suitable habitat (i.e., vernal pools;
cool-water pools with low to
moderate dissolved solids).
Branchinecta
sandiegonensis
San Diego fairy
shrimp
FE/None/
Covered (List 3),
NE
Vernal pools, non-vegetated ephemeral
pools
Not
observed
Not expected to occur. Site lacks
suitable habitat (i.e., small, shallow
vernal pools and road ruts).
Not expected to occur. Site lacks
suitable habitat (i.e., small, shallow
vernal pools and road ruts).
Cicindela
senilis frosti
senile tiger
beetle
None/None/None Inhabits marine shoreline, from Central
California coast south to saltmarshes of
San Diego; also found at Lake Elsinore
Not
observed
Not expected to occur. Site is
freshwater marsh, and surrounded by
a heavily disturbed and developed
area.
Not expected to occur. Site is
freshwater marsh, and surrounded
by a heavily disturbed and
developed area.
Danaus
plexippus
monarch None/None/None Wind-protected tree groves with nectar
sources and nearby water sources
Not
observed
Not expected to occur. Site lacks tree
groves and potential nectar sources.
Low potential to occur. Site is highly
disturbed so lacks tree groves and
potential nectar sources.
DUDEK
APPENDIX D (Continued)
13764 D-11 December 2022
Scientific
Name
Common
Name
Status
(Federal/ State/
Carlsbad HMP) Primary Habitat Associations
Status
On Site Potential to Occur in Wetlands Potential to Occur in Uplands
Euphydryas
editha quino
Quino
Checkerspot
Butterfly
FE/None/None Annual forblands, grassland, open
coastal scrub and chaparral; often soils
with cryptogamic crusts and fine-
textured clay; host plants include
Plantago erecta, Antirrhinum
coulterianum, and Plantago patagonica
(Silverado Occurrence Complex)
Not
observed
Not expected to occur. Site lacks
hilltops, ridgelines as well as suitable
host plants and nectar sources. Site
is adjacent to highly disturbed and
urbanized areas.
Not expected to occur. Site lacks
hilltops, ridgelines as well as
suitable host plants and nectar
sources. Site is adjacent to highly
disturbed and urbanized areas.
Streptocephalu
s woottoni
Riverside fairy
shrimp
FE/None/
Covered (List 3), NE
Vernal pools, non-vegetated ephemeral
pools
Not
observed
Not expected to occur. Site lacks
suitable habitat (i.e., deep, long-lived vernal pools, vernal-pool-like
seasonal ponds, stock ponds, warm-
water pools that have low to
moderate dissolved solids).
Not expected to occur. Site lacks
suitable habitat (i.e., deep, long-lived vernal pools, vernal-pool-like
seasonal ponds, stock ponds,
warm-water pools that have low to
moderate dissolved solids).
Tryonia imitator mimic tryonia
(=California
brackishwater
snail)
None/None/None Inhabits coastal lagoons, estuaries, and
saltmarshes, from Sonoma County
south to San Diego County
Not
observed
Not expected to occur. Habitat on site
is freshwater marsh, this species
resides in brackish water habitat.
Not expected to occur. Habitat on
site is highly disturbed upland and
developed, this species resides in
brackish water habitat.
Notes: Species list composed of CNDDB searches for the U.S. Geological Society 7.5-minute Encinitas quadrangle and surrounding quadrangles (CDFW 2016).
Species includes all Carlsbad HMP covered species.
Status Legend:
Federal Designations
BCC: USFWS Bird of Conservation Concern
FE: Federally listed as endangered FT: Federally listed as threatened
State Designations
CT: Candidate for listing as threatened FP: CDFW Fully Protected Species
SE: State listed as endangered
ST: State listed as threatened SSC: California Species of Special Concern
Other Designations
Carlsbad HMP:
Covered: Species covered under the Carlsbad HMP
NE: Narrow Endemic – Species confined to a specific geographic region, soil type, and/or habitat
DUDEK
APPENDIX D (Continued)
13764
E-12 December 2022
INTENTIONALLY LEFT BLANK
DUDEK