HomeMy WebLinkAboutCT 85-39; LAUREL TREE; Planning CommissionC-r85-3?
.1276 More.. B oulevard, Son Diego, CA 92110-3315 (619) 275-3732
August 11, 1987
. I
Mr. Jack Henthorn OCT27 1987 Development Consultants Consortium
2892 Jefferson Street
P.O. Box 2143 ... CITY OF CARLSBAD
Carlsbad, CA 92008 D VELOR.pRocsERv DIV.
Reference: Biological Survey of the College Boulevard Alignment (RECON Job
Number R-1721)
Dear Mr. Henthorn:
A survey of the College Boulevard alignment between Palomar Airport Road and
Poinsettia Lane in Ccisbad (Figuras 1 and ) was conducted or August , iS7 .o
assess biological resources for an area 200 feet on either side of the proposed
center line (400 feet width total). The reconnaissance was conducted on foot
for identification of plant and animal species, and for accurate vegetation
mapping. The impacts that would be incurred as a result of construction of the
road along the proposed alignment are not considered significant.
Botany
Two native plant communities, Diegan coastal sage scrub and willow scrub,
were observed within the survey boundaries (Figure 3). About one-half acre of
Diegan coastal sage scrub was high quality, and about one and one-half acre was
disturbed with sparse shrubs and many weedy species. The high quality scrub was
immediately sith of the power lines about one-half mile south of Palomar
Airport Road. The Diegan coastal sage scrub was characterized by coastal
sagebrush (Artemisia californica), black sage (Salvia mellifera) and California
encelia (Encelia californica) on the flatter areas. Those species and other
sage scrub species, such as laurel-leaf sumac (Rhus lauina), lemonadeberry
(Rhus integrifolia), mesa bushmallow (Malacothamnus fasciculatus), along with
chaparral elements such as toyon (Heteromeles arbutifolia) and scrub oak
(Quercus dumosa) dominated the shrubby slopes facing east.
The proposed alignment crosses a narrow drainage running parallel to
Palomar Airport Road about 450 feet south of Palomar Airport Road. This
drainage supports less than 0.1 acre of scattered willows (Salix lasiolepis) and
emergent aquatic vegetation such as cattails (Typha latifolia) and other native
and non-native species within the 100 foot width of the proposed alignment.
A patch of willow scrub also occurs outside the alignment and outside the
survey area in a drainage just west of the proposed College Boulevard alignment
and south of proposed Poinsettia Lane. South of Poinsettia Lane the proposed
alignment enters a eucalyptus grove on the south-facing slope. This willow
patch and the eucalyptus trees are outside the scope of this survey, but impacts
will need to be assessed as plans proceed for continuing College Boulevard to
the south.
ORANGE COUNTY I AIVEFfSIDE COUNTY
San Onotre Falibrook
Pala
A Warner Springs
41
Vista Borrego
c OceansideN\
Carlsbad p San Marcos
scondido
PROJECT LOCATION
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7Ramona Rancho
Bernardo
Del Mar
Poway
Miramar
3 I I Lakeside
_ La1Jolla ç
no
7 Santee
Pacific Beach
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Alpine
_______________
LaMesa,- pring Valley
Point Loma Sa .L
Chula Vista
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Ocotillo Wells
Jacumba
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FIGURE 1. THE LOCATION OF THE PROPOSED PROJECT RELATIVE TO THE COUNTY OF SAN DIEGO.
13-1721 7/87
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FIGURE 2. PROJECT LOCATION ON U.S.G.S. 7.5 MINUTE TOPOGRAPHIC
MAPS, ENC1NITAS AND SAN LUIS REY QUADRANGLES
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R-1721 7187
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WILLOW SCRUB DISTURBED
COASTAL SAGE SCRUB H SURVEY LIMITS
0 500
feet
FIGURE 3. VEGETATION MAP OF COLLEGE BOULEVARD ALIGNMENT
I oECQ.5N
R-1721 8/87
Mr. Jack Henthorn -2- August 11, 1987
The remaining land has been disturbed for agriculture and is now covered in
an assortment of weedy species including non-native grasses (Avenafatua, Bromus
mollis, Cortaderia atacamensis), ice plant (Gasoul crystaUinum), fennel
(Foeniculum vulgare), and cocklebur (Xanthium strumarium). The field adjacent
to Palomar Airport Road was recently plowed and was not covered in vegetation.
Plant species that were observed within the survey boundaries are listed in
Table 1.
Sensitive Plant Species
No plant species listed by the state or federal governments as rare,
threatened, or endangered were observed during the survey of the proposed
alignment. Several plant spcies (Table 2, with codes explained in Table 3)
listed by the California Native Plant Society (Smith and York, 19814) as
sensitive and known to occur in the vicinity of the project, were searched for
but not found during the field reconnaissance. The two Brodiaea species would
not be visible among the grasses in the disturbed areas at this time of year and
possibly could be present even though not observed during the survey.
Zoology
The search for animals along the proposed alignment revealed 17 species of
birds, three species of mammals, and one reptile species (Table LI). These
species were identified either by direct observation, call (for birds) or sign
(coyote scat). Most were observed in the native coastal sage scrub vegetation,
though western fence lizards were observed in piles of vegetation debris from
nearby tomato fields. The lizards would be expected to occur throughout the
survey area.
Sensitive Wildlife Species
No animal species listed by the state or federal governments were observed
during the survey. The California black-tailed gnatcatcher, a candidate for
federal listing and often present in coastal sage scrub habitat of San Diego
County, was one of the major species toward which the survey was directed, but
no gnatcatchers were observed within the 400-foot-wide survey area.
Four raptors (American kestrel, red-tailed hawk, Cooper's hawk, and red-
shouldered hawk) were observed during the survey, and all raptors are protected
in the state of California. In. addition, the Cooper's hawk is a California
Department of Fish and Game Species of Special Concern and is considered to be
declining in San Diego County (Everett, 1979) and the rest of California
(Remsen, 1979). The Cooper's hawk was observed roasting in a large shrub in the
coastal sage scrub along the west side of the proposed alignment. The raptors
probably use the coastal sage scrub and the disturbed weedy areas within the
survy area, and the nearby cultivated areas for foraging for prey. No
appropriate nesting sites are available within the. survey area, but the raptors
may nest in the eucalyptus grove south of proposed Poinsettia Lane.
TABLE 1
VASCULAR PLANT LIST
(continued)
Scientific Name
Quercus dumosa Nutt.
Rhus integrifolla Nutt.
Rhus laurina Nutt. in T. & G.
Ribes speciosum Pursh.
Ricinus communis L.
L .
Salix lasiolepis l3enth.
var. lasiolepis
Salsola iberica Sennen & Pau.
Salvia apiana Jeps.
Salvia mellifera Greene
Sambucus mexicana Presl.
Sisyrfrichium beflum Wats.
Solanum xanti Gray
Steph anow e ria virgata Benth.
ypha latifolia L.
Common Name
Scrub oak
Lemon adebe r ry
Laurel sumac
F us ch ia-flowered
gooseberry
Castor bean
Curly dock
Arroyo willow
Russian thistle
White sage
Black sage
Elderberry
Blue-eyed grass
Purple nightshade
Step hanomeria
or mule weed
Tall cattail
Habitat Status
CMC/MC N
CS/CMC
N
CS/CMC/C
CS/CMC N
MI CS! CM Cl 0
M/RW/CS/CMC/0
CS! Cl M ! R W
N
0/U
CS/CMC/C N
CS/CMC
N
CSICMC/FW
N
GICS/CMC/FW
N
CD I CS/CMC/C N
FM
N
Xanthium strumarium var. canadense
(Mill.) T. & G. Cocklebur MIOIU N
AP IT AT c
CD = Coastal strand, coastal dunes
CS = Coastal sage scrub, inland sage scrub
CMC = Coastal mixed chaparral, mixed chaparral, chamise chaparral
G = Grasslands, pasturelands, etc.
FM = Freshwater marsh
TABLE 1
VASCULAR PLANT LIST
(continued)
FW = Foothill woodland
ISS = Inland sage scrub
M = Mesic areas and wetlands
0 = Open places, waste places, roadsides, burns, etc.
RW = Riparian woodlands
S = Saltwater marsh
VP = Vernal pools
YPF = Yellow pine forest
OTHER TERMS
C = Cistmontane
U = Ubiquitous/ cosmopolitan
N = Native to locality
= Introduced species from outside locality
1-2-3 = Rare species CNPS code
TAE.LE 2
SENSITIVE PLANT SPECIES
ci:PS --deral
Species Code Code Habitat Type
Acanthomintha ilicifolia
Adolphia californIca
Brodiaea filifolia-
Brodiaea orcuttii
Ferocactus viridescens
Seiaginella cinerascens
3-3-2 CEIC2 Clay depressions on
mesas and slopes in
coastal sage scrub and
chaparral
1-2-1 --1-- Dry slopes
3-3-3 CEIC2 Heavy clay soil in
grasslands and vernal
pools
1-3-2 --/C2 Grasslands and near
vernal streams and
pools
1-3-1 --I-- Dry hills in coastal
sage scrub and grass-
land
1-2-1 --I-- Slopes and mesas
NOTE: See Table 3 for explanation of codes.
1) CNPS R-E-D CODE
3) FEDERAL CANDIDATES AND FEDERALLY
LISTED PLANTS
R (Rarity)
1- Rare, but found in sufficient numbers and distributed widely
enough that the potential for extinction or extirpation is low at
this time.
2- Occurrence confined to several populations or to one extended
population.
3- Occurrence limited to one or a few highly restricted populations,
or present in such small numbers that it is seldom reported.
E (Endangerment)
1- Not endangered
2- Endangered in a portion of its range
3- Endangered throughout its range
D (Distribution)
1- More or less widespread outside California
2- Rare outside California
3- Endemic to California
2) STATE USTW PLANTS
CE' State listed, endangered
CR= State listed, rare
FE= Federally listed, endangered
FT= Federally listed, threatened
C1= Enough data are on file to support the federal listing
0 Enough data are on file to support federal listing, but the plant is
presumed extinct
C2= Threat and/or distribution data are insufficient to support fed-
eal listing
C2*=Th rea t and/or distribution data are insufficient to support fed--
eral listing; plant presumed extinct
C3a= Extinct
0b=Taxonomically invalid
C3c= Too widespread and/or not threatened
4) MSCELLANEOUS ABBREVIATIONS
B. L. M. Bureau of Land Management
ned. inedita, not yet published
S. R. Status report, a CNPS summary on that plant
U. S. F. W. S. United States Fish and Wildlife Service
+ In this state and others
-H- Widespread outside California
-* Extinct or extirpated
Source: Smith and York 1984.
TABLE 3. CNPS RATING CODES
FECWN
TAELE 1
WILDLIFE OBSERVED
Common Name
Birds
Cooper's hawk
Red-shouldered hawk
Red-tailed hawk
American kestrel
California quail
Mourning dove
Anna's hummingbird
Black phoebe
Scrub jay
Bushtit
Northern mockingbird
W ren ti t
Lesser goldfinch
House finch
Brown towhee
Hooded oriole
Domestic pigeon
Mammals
California gound squirrel
Rabbit
Coyote
Reptile
Western fence lizard
Scientific Name
Accipiter cooperii
Buteo lineatus elegans
Buteo jamaicensis subspp.
Falco sparverius subspp.
Callipepla californica californica
Zenaida macroura marginella
Archilochus anna
yornis nigricans semiatra
Aphelocoma coerulescens obscura
Psaitrioarusminimus minimus
vttmus pLyyIoioS pjygAotios
Chamaea fascata henshawi
Carduelis psaltria hesperophilus
Carpodacus mexicanus frontalis
Pipilo fuscus senicula
Icterus cucullatus nelsoni
Columba livia
c_ Syiviaus sp.
Canis Iatrans
Scel000rus occidentalis
9 -
Mr. Jack Henthorn -3- August 11, 1987
Impacts
Impacts that would be incurred by the construction of College Boulevard
between Palomar Airport Road and Poinsettia Lane would include one-half acre of
good coastal sage scrub, one and one-half acres of disturbed coastal sage scrub
and less than 0.1 acre of willow scrub. These habitats occur as patches
surrounded by disturbed weedy areas and cultivated fields. No sensitive species
would be directly impacted, though foraging area for the raptors would be lost.
The impacts are not considered significant.
Recommendations
Crossing the drainage (indicated as a blue line on the U.S.G.S. Encinitas
Quadrangle) parallel to Palomar Airport Road will require a permit from the
California Department of Fish and Game under Section 1603 of the Fish and Game
Code.
If you have any questions, please call.
Sincerely,
Bobbie A. Steele
Biologist
IMMISM
References Cited
Everett, William T.
1979 Threatened, Declining and Sensitive Bird Species in San Diego County.
- Sketches 29(10):2-3.
Remsen, Jan
1979 Species of Special Concern: California's Imperiled Birds. Western
Tanager 45(8):1-8.
Smith, J. P., and R. York, eds. -
1984 Inventory of Rare and Endangered Vascular Plants of California.
California Native Plant Society Special Publication No. 1, 3rd edition.
September.
cr85- 3?
'7 3na1 nvironme onL?rTs
fr\ 1276 Morena Boulevard, San Diego, CA 92110-3815 (619) 275-3732
-
August 10, 1987
Mr. Jack Henthorn
Development Consultants Consortium
2892 Jefferson Street OCT27 1987
P.O. Box 2143
Carlsbad, CA 92008 CITY OF CARLSBAD
Reference: Archaeological Survey of the College FON Job
Number R-1721)
Dear Mr. Henthorn:
The following is a report of the results of a cultural resources survey of the
College Boulevard alignment between Palomar Airport Road and Poinsettia Lane in
Carlsbad (Figure 1). The survey included an on-foot inspection of the project
area, record searches at local research institutions, and consultation of proj-
ect files housed at RECON. As a result of this survey, it has been determined
that no historic or prehistoric cultural resources will be impacted by construc-
tion of this alignment. No mitigation measures are proposed.
According to record searches requested from the San Diego Museum of Man and San
Diego State University, and files housed at RECON, four prehistoric archaeol-
ogical sites have been recorded near the selected alignment. Two of the sites,
SDI-9607/W-113 and. SDI-9479/W-3291, are located in the southern portion of the
project area, within the l-lillebrecht property. The sites were noted by SRS in
1982 (Desautels 1982) as very disturbed shell scatters. This property is
currently in agriculture. The sites, located on a prominent hill west of the
proposed roadway, were tested by RECON in 1985 (Hector 1985). As a result of
the 1985 excavations, all impacts to the sites were mitigated; a report was
prepared describing the investigation, and no further studies of these sites
were recommended. Site SDI-9607 was originally recorded by Malcolm Rogers as a
scattered shell midden with bedrock milling features. No trace of any cultural
material was noted in this area either in 1985 nor during the most recent
investigation. Site SDi-9479 was recorded as a shell midden with stone tools.
Artifacts on the surface of this site were collected and analyzed, and test
units were excavated by RECON in 1985. The site was found to be a highly
disturbed temporary camp. No portions of this site were noted within the
alignment.
Two additional sites have been recorded on the ridge running parallel to the
west of the proposed roadway. These sites are SDi-6752/W--1875 and SDI-94781W-
3290. Both are located on top of the ridge, away from the alignment. They are
located more than 400 feet west of the center line of College Boulevard. It is
highly unlikely that they could be impacted by road construction. Site SDI-6752
is recorded as a sparse shell and lithic scatter. One tool and several flakes
were noted on the site form. Site SDI-9478 is a similar site, although a mano
was recorded on the surface in 1982.
Mr. Jack Henthorn -2- August 10, 1987
I conducted a field survey of the alignment on —August Lt, 1987 -.----The entire
alignment was surveyed, with the addition of ridge edges east and west of the
project area. Because much of the area has been disturbed by agricultural
activities, visibility was excellent. Transects measuring 200 feet on both
sides of the center line of the road were surveyed, for a total covered width of
400 feet.. No traces of any cultural materials were found during the survey; no
portions of the four sites described above will be impacted by construction of
the project. Therefore, project implementation will not cause adverse impacts
to historic or prehisforic cultural resources, and no mitigation measures are
necessary.
If you have any questions about the information provided in this letter, please
contact me.
Sincerely,
Susan N4.M. Hector, Ph.D.
Director, Cultural Resources
SMH:st
References Cited
Desautels, Roger
1982 Cultural Resources Report on the Rancho La Costa Properties Located in
the County of San Diego. Scientific Resource Surveys, Inc.
Hector, Susan M.
1985 Archaeological Test Excavations on the Hillebrecht Property, Carlsbad,
California. RECON.
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FIGURE I. PROJECT LOCATION ON U.S.G.S. 75 MINUTE TOPOGRAPHC
MAPS, ENCINITAS AND SAN LUIS REV QUADRANGLES
RECWN
R-1721 7/87