HomeMy WebLinkAboutCT 93-09; Ocean Bluff; Tentative Map (CT) (69)Anita M. //ay viC ^ C 3
Biological Consultant
September 8, 1993
Jack Henthorn & Associates
543 1 Avenida Encinas
Suite G
Carlsbad, CA 92008
Re: Ocean Bluff Project - Northern Sewer Line
I conducted a survey of the proposed northern sewer line alignment on September 8, 1993. I
surveyed the proposed alignment and approximately 100 feet on either side of the line (see
attached exhibits). The habitat through which the alignment is proposed is mixed chaparral. This
agrees with the vegetation mapping from the certified EIR 83-8 (Carlsbad Land Investors) for the
Cobblestone Sea Village project and the RECON study #R-1842 for the Ocean Bluff Property.
Although the EIR was done ten years ago and the RECON study is nearly five years old, the
habitat has not changed since the biological surveys were conducted. Plant species occurring in
the vicinity of the proposed pipeline include: chamise (Adenostoma fasciculatum), coast white
lilac (Ceanothus verrucosus), yerba santa (Eriodictyon crassifolium), flat-top buckwheat
(Eriogonum fasciculatum ssp. fasciculatum), toyon (Heteromeles arbutifolid), lemonadeberry
(Rhus integrifolia), laurel sumac (Malosma laurind), black sage (Salvia mellifera), and mohave
yucca (Yucca schidigerd).
No species listed as threatened or endangered by the state or federal resource agencies were
observed along the sewer line alignment. The coast white lilac, a sensitive species, is scattered
within the mixed chaparral habitat on the Cobblestone Sea Village property as indicated in the
vegetation map for the project. Coast white lilac is on List 2 of the California Native Plant
Society but is not listed by the state or federal agencies. This list includes species that are rare,
threatened or endangered in California, but are more common elsewhere. The R-E-D (Rarity-
Endangerment-Distribution) code for the coast white lilac is 1-2-1. This indicates that although
the species is rare it is found in sufficient numbers to preclude extinction, it is endangered in a
portion of its range, and it is widespread outside California.
Construction and installation of the northern sewer line will result in a disturbance of mixed
chaparral habitat approximately 75 feet long by 15 feet wide. Although several individuals of
the coast white lilac may be disturbed by the construction of the sewer line, this is not considered
a significant impact. No mitigation is recommended for impacts which may occur due to the
installation of the northern sewer line.
Sincerely
Anita M. Hay worth
Owner/Biologist
10542 Montego Drive / San Diego CA 92124 / (619) 694-0084
V
BIOLOGICAL SURVEY AREA
OCEAN BLUFF SEWER LINE BIOLOGICAL SURVEY
CONDUCTED BY ANITA M. HAYWORTH 9/8/93
\ -1
PROPOSED
OFF SITE
SEWJRLINE
I r\
I »
1 MIXED CHAPARRAI|
2 COASTAL SAGE SCJfRUB
3 SOUTHERN CALIF<
GRASSLAND
4 DISTURBED
• SAN DIEGO THORNfMNT
Q RANGE OF WHITE LILAC
;ill BIOLOGICAL SURVEY1AREA
OCEAN BLUFF SEWER LINE BIOLOGICAL SURVEY
CONDUCTED BY ANITA M. HAYWORTH 9/8/93
R-1427 '64
Anita M. Hayw
Biological Consultant
SERVICES OFFERED
Biological reconnaissance surveys and mapping.
Threatened, endangered and rare wildlife species surveys. Especially well versed
in California gnatcatcher, cactus wren, and least Bell's vireo ecology.
Biological technical reports. Prepared according to City or County of San Diego
guidelines.
Biology sections of Environmental Impact Reports or Statements. Includes
assessment of impacts and recommendation of mitigation measures.
Biological Assessments. Prepared prior to a Section 7(a) consultation.
Habitat mapping and measurement. Experienced in determining mitigation
requirements according to the Resource Protection Ordinance.
Mitigation monitoring. Quantitative and statistical analysis of mitigation measures
and their success.
QUALIFICATIONS
San Diego County certified biologist.
Certified for California gnatcatcher and least Bell's vireo surveys from the U.S. Fish
and Wildlife Service.
CALTRANS certified WBE.
Interface well with federal, state and local resource agencies.
Six years experience conducting surveys and preparing environmental documents
in San Diego County.
Well versed with CEQA and NEPA requirements.
Advanced education in ecology, ornithology, vertebrate zoology, statistics, and
computers.
10542 Montego Drive / San Diego CA 92124 / (619) 694-0084