HomeMy WebLinkAboutEIR 190; ALGA HILLS; EIR - ENVIRONMENTAL IMPACT REPORT; 1973-06-040
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ENVIRONMENTAL IMPACT
REPORT
RICK ENGINEERING COMPANY
San Diego . California
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D TABLE OF CONTENTS
D Page No.
A. The Environmental Impact·. of the Proposed Action 1
D 1. Project Description 1
D 2. Environmental Setting Without the Project 4
a. To.pography
D b. Land Use
c. Biology
d. Geology
D e. Archeology .. ' f. History
D 3. Environmental Impacts 8 (
a. Land Use
D bo Geology -Grading
c. Biology
d. Archeology
D e. H±story
f. Drainage -Water Quality
g. Traffic ·o ht Noise
i. Air Quality
j . Utilities
D k. Community Services
B. Any Adverse Environmental Effects VVhich Cannot Be 15
D A voided Should the Proposal Be Implemented
c. . Mitigation M.easures Proposed to Minimize the Impact 17 D '<,-
D. -Alternatives to the Proposed Action 19
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E. The Relationship Between Local Short-Term u'ses of 21
Man's Environment and the Maintenance and
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Enhancement of Long-Term Environmental
Productivity
F'. Any Irreversible Environmental Changes Whi_ch Would 22 D Be Involved in the Proposed Action Should It Be Implemented
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G.
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The Growth Inducing Impacts of the Proposed
Activity Upon the Neighborhood and/or Community
The Boundaries of the Area Which May Be
Significantly Affected By the Proposed Activity
. Page No.·
23
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Certification of Accuracy and Qualification of 25
Individuals Preparing the Environmental Impact
Statement
List of All Agencies, Organizations, or Individuals 26
Consulted
Appendix A -Species List 2 7 .. .
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A. THE ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION
1. Project Descr.iption
The proposed project, Alga Hills, is a subdivis.ion of 62 •
acres of undeveloped land. It is located southeast of the intersection
of Alga Road and Al.icante Road, in the southern portion of the City of
Carlsbad.
The de;veloper, La Costa Land Company, is applying for approval
of a tentative map and specific plan.
The project site, as well as the surrounding area, is part of.
the La Costa Master Development Plan. The plan was approved by the . . •
City of Carlsbad Planning Commission with Resolution No. 808 on
July 25, 1972, and by the C.ity Counc.il with Resolution No. 2058 on
August 15, 1972, and Ordinance No. 9322 on September S,-, 1972.
The cfevelopment-of Alga Hills will involve the padding and
terrac.ing of lots, •cio{!.struction of public stre~ts, and .installation of .im-:
provements to allow the' construction of 414 condomin.ium units. These
414 un.its will be conta.ined within 69 separate split level buildings, at
six dwell.ing un.its per bu.ilding. Each ·bu.ild.ing will be separated by
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open space expanses and each will contain either 13,000 square ·fee·t
or 15,000 square feet. Proposed for construction as a part of this
development will be underground parking and two recreation areas.
Alga Hills w.Ul be developed to an overall 'density of 6 .7
dwelling un.its per ·gross acr.e. This project site will be developed .in
three phases, the first of which will conta.in 125 units.
Development of . Alga Hills will require some grading of the
project site. Grading of the site will require ·approximately 900,000
cubic yards of excavation. Cut and fiil slopes will be planted with
ground cover to stabilize the slopes and reduce erosion.
A 150-foot San Oiego Gas and Electric power line easement
forms the southern boundary of the project site. Also, a 200-foot
easement traverses the northeast protion of the site. These easements
• will be kept in their natural conditions until lo~_s contiguous to them
are developed I at which time they may be landscaped.
Access to Alga Hills is presently available from Alga road, .
which forms the nor.them boundary of the project site, and Alicante
Road, which forms the western boundary. A system of aesthetically
designed stree-ts, p ... rivate driveways, and cul-de-sacs will _P:rovide
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access to all lots within the development .
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Utility service will be provided to all lots. Gas and Electric
service for the proposed project is located within Alga Road • adjacent
to the northern property boundary. Sewer service will be provided
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from an existing sewer main located along the eastern property boundary.
This main has been designed to handle the effluent from the La Costa
Meadows development as well as from the subject property. Sewer
service will be provided by the Leucadia County Municipal Water
District. Water lines for Alga Hills will tie into existing lines
located within Alga Road and Alicante Road. This service will be
provided by the Carlsbad Municipal Water District. All utilities,
with the exception of the existing San Diego Gas and Electric
power lines, will be placed underground.
2.. Environmental Setting without the Project
The proposed project, Alga Hills, is located in the southern
portion of the City of Carlsbad. The project site is located southeast
of the intersection of Alga Road and Alic ante Road. A 15 0-foot San
Diego Gas and Electric easement for,ms the s·outhern boundary, and
the proposed La Costa Estates North development forms the eastern
boundary of the project site.
a) Topography
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The topography of • Alga Hills is characterized by rolling terrain.
The project sit~ is dissected by numerous gullies which drain the land ..,.
in a southern direction. Eleva_tions vary from 50 feet in a gully in the
" southeast portion of Hie site to 280 feet on a ridge summit· in the
northeast por,tion of the property.
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b) Land Use
The project site is 62 acres of undeveloped land, the north-
west portion of which has been previously used for earth borrow
operations. The slopes in the western portion of the site which border
Alic ante Road are terraced and planted with ground cover.
Alga Hills is bounded on the west by Alicante Road, beyond
which lies La Costa Valley UniCNo. 4 '(ZONED R-1-10, 000). This
development is composed of lots graded for single-family units. Most
of these lots presently support completed residential units.
South of the subject property is located a 150-foot San Diego
Gas and Electric easement. South of the easement lies La Costa
Valley Unit No.· 5 (ZONED RD-M); a development composed of
multi-family residential units.
The land north and east of Alga . Hills is presently undeveloped
(ZONED PC) , but is planned for development as part of the La Costa
· Development. These undeveloped areas are known as Algq Glens
and La Costa Estates North, respectively.· An eleven acre elementary
school site i,p reserved as part of the La Costa Est?tes Ngrth development.
Completion of the Bich-Mi;ir School District demographic st~dy will determine
wheth~r the ·school district will want-this site-. ~ .. . . ~ ..
~-=.·Northeast of the.project site, a: 200-foot .San Di~go Gas and
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Ele-ctric e·asement is located. Be yon¢! this_.eas~=tment isJocat,e_d a
water tank and the future site of a San Diego-Gas and f,lectric supstatton.
· The water tank is maintained by the Carlsbad Municipal Water-District.
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c. Biology
The major vegetation assemblage on Alga Hills is characterized
by grassland and coastal sage scrub. No trees are located on the
project site. The grasslands, located in the southern portion of the
site, are composed of weedy, herbaceous dicots and grasses.
The floral community associated with the coastal sage scrub,
·located in·the ea·stern portion of the project site, is characterized
by California sage brush, California buckwheat, laural sumac, b.lack
sage, and lemonade berry. A brushfire burned over a r:o rtion of the
site in September 1970.
The grasslands and coastal sage scrub floral community
generally support a variety of animal populations which includes
small mammals and rodents, larger vertebrates, reptiles, and a variety'
• of birds.
. :-;:r ·,:<:)The principal small mammals and rodents observed I or normally
• expected to be found on the project site, were: ground squirrel,
. ~rush rabbit, jackrabbit; pocket mouse, and other rodents such as
. wood rats. ~he larger vertebrates observed, or for which direct
evidence was found, include striped skunk and spotted skunk. . . ' . •
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No reptiles were observed during the biological investigation
of this site. Reptiles .. to be expected in this h~bitat include gopher,
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• garter and king snakes, striped racers, and several types of lizards.
Bird species observed in the coastal sage scrub and in the scrub
• '..f areas assoc:iated with the grassland include common bushtit I horned
lark, killdeer, we stern meadowlark, California quail, roadrunner,
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and various sparrows.
No endangered species of plant or animal life were observed
on the project site and none· are known to be dependent upon the area.
d) Geology.
The ·we stern portion of Alga Hills is underlain by the
Eocene Del Mar formation. • This formation consists primarily of
.-silty cla,yst0ne and clayey to -silty -sandstore, with local concentrations
of pebble--:size material. These soils are held together by a relatively
high clay content.
The eastern por,tion of the project site is underlain by the
Jurassic Black Mountain volcanics. These rocks. are fine-grained,
grey-green in color, and of ande sitic composition. Typically, the
Black Mountain volcanics are closely jointed and weathered, which
greatly facilitates surface excavation. The soil con9itions encountered
were ba_sically a shallow layer of gravelly clayey silt topsoil overlying
the volcanic rock. Below the loose topsoil layer,. t~e soil was
generally firm, with firmness inc re a sing with depth.
There are no adverse geological conditions with.in Alga
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Hills
which would preclude developmeht of the project. No eviqen_ce of
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major subsidepce or mudflows wc:1s observed on the site· a·nd none
are anticipated to occ.ur during· development. The only potentially
active fault near the site is the Rose Canyon Fault, located eight
miles southwest under the Pacific Ocean.
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e}. Archeology
' An examination of the site records at the San Diego Museum .
of Man revealed no sites were ever recorded on Alga Hills.
An archeological investigatio.n of the project site confirmed that
no archeological resources are located on the site.
f} History
A historical investigation of the project site did not reveal the
existence of any sites of historical significance.
3. Environmental Impacts
a) Land Use
The development of Alga H.ills is the construction
of 414 condominium units. Also proposed for construction as a part
of this development will be two recreation areas. The maximum
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allowable density.for this development is 14 dwelling units per gro•s·s
acre. The proposed tentative map and specific plan indicate a planned
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density ot' only 6. 8 dwelling un.it.s .per gross acre, which is sig-
nificantly lower than the maximum density allowable within the La
Costa Master Development Plan.
b} Geology-Grading
The nature of the soils found on Alga_ . Hills indicates they
can support the proposed development. Grading on this site will
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change the land form of the project site from undeveloped terrain into
a residential community. TI?-e visual impact of the earth exposed
by grading will remain only until housing un~ts are constructed and.
landscaping is complete. Cut and fill s.l.6pe-s will be planted with
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ground cover to stabilize the slopes and reduce erosion.
No adverse effects should result from grading of the site in
accordance with accepted engineering practices.
c) Biology
Development of Alga -Hills will require the removal of
vegetation from the graded portions of the pro.ject site. Accompanying
this loss of vegetation will be the displacement of bird and animal
populations which presently occupy the site.
This wildlife will be displace to undeveloped areas off the ..
proposed site'. Anima1s which can tolerate the presence of humans will
remain o.n the site. The larger predators will face a reduction in
hunting territories through the loss of a certain amount of wildlife
habitat.
The northwe'st portion of the proje_ct site has previously been
cttsturbed through its use as an earth borrow are-a, and is of minimal
resource value.
. No endangered species of plants or. animals will be affected by
the development of __ Alga Hills.
New species of plants will be introduced into the area by the
landscaping of the development site.
-· d) Archeology
It has been determined that the proposed site offers no arch
eological resources .. There will be _no archeological impact resulting
. from the development of • Alga-_ Hills.
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e) • History •
It has been determined that no his1orical sites are located on
the proposed development site ..
f) Drainage-Water Quality
The drainage of Alga . Hills will change from overland sheet
flow in natural channels to flow in street gutters and· in underground
storm drainage systems. Design of the storm drain system will be
in accordance with current standards of the City of Carlsbad.
Runoff from the project site will increase with development.
The total drainage area of Batiquitos Lagoon is 52 .3 square miles.
The project site represents approximately O. 2 percent of the drainage·
area, thus the effect of the increased runoff on the downstream
environment, including Batiquitos Lagoon~ will be negligible.
There will be a minimal decrease in water quality because of
runoff from the project site. This decrease in water quality is •
attributed to impurities associated with urban runoff .. These im-.
purities, including hydrocarbons, fertili2;ers / and chemicals are
typically assiciated with runoff from urban development and cannot
be eliminated.
g) Traffic
Traffic in the La Costa area and the City of Carlsbad will increase
as a result of the development of Alga Hills. Using an average
of eight trips generatE)d per unit per. day, it is estimated. that traffic
will increase by 3312 trips per day. The circulation system of La
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Costa and the surrounding areas has been designed to accommodate
th.is anticipated traffic increase. Th.is site will be served by Alga
Road and Alicante Road. Also proposed for construction as a part of
this development w.ill be a dedicated road with a 60-foot right-of-way
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connecting Alga Road to Alicante Road. Th.is road will prov.ide access
to .-.inter.Lor lots w.ithin the development.
Alga Road is designiated as a major road on the Circulation
Element of the San Diego County Gener.al Plan. Alicante Road is
designated on the General Plan as a Cpllector Road. Alga Road will
have an ultimate right-of-way width of 102 feet and carry an estimated
ultimate traffic volume of 20,000 to 30,000 vehicles per day.
From Alga Road, traffic will travel .in_ an east-west direction for further
distribution. The e stiniated traffic volume of Alicante Road is 5,000
vehicles per day on an 84-foot wide road. The ultimate traffic
capacity of_ these _roads exceeds the traffic volumes expected to occur
as a result of the development of the pro_ject_ site. --
The amount of traffic generated by the development of Alga ---
Hills will be contingent on the nature of the residents of the project.
The diversity of residents, which include retired, second-home owners
and single-home owners., makes accurate traffic predictions difficult. _
The proximity of commercial and recreational facilities within the
La Costa Development would result in a relatively low averqge trip
length.
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h) Noise
The existing noise level in the project area is low, sinc·e at .
pre sent, Alga Road and Alic ante Road are the only noise sources in
close proximity to the project site. A minimal increase in the noise
level will occur with the completion of the proposed project.
Noise from the contractor• s equipment during the construction
phase cannot be eliminated. This noi'se will be of a temporary nature,
lasting only until construction of the project is completed.
Aircraft overflight noise will occur occasionally, but it is not
considered to be a significant factor. The proposed . Alga ·: Hills
development is outside of normal departure and landing paths for any
existing Of planned airport.
·-:Alga
i) Air Quality
The increase ~n air pollution resulting from the developme~t of
. Hills will be minimal. The main source of air pollution
created by the project will be from motor vehicles.
Based on the anticipated population of the project, an estimate of
• motor vehicle emissions was m_ade for the year 1975, since this is a
major planning date for state and regional air quaiity proqrams.
Estimated Motor Vehicles 745
Emission Rates (lbs ./day)
Hydrocarbons (as Hexane) • 92
Carbon Monoxide 980
. Nitrogen Oxides (as Nitrogen Dioxide)l07
Particulates · 13.
As a comparison, 2,542,000 pounds of carbon monoxide per day were
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discharged into the San Diego Air Basin in 19 70 by motor vehicles .
•. _The quality of emissions cannot be controlled by the developer, but
are regulated by State and Federal Standards.
. j) Ultilities
The demand for utility services will increase as a result of the
development of Alga , Hills. Utility services will be provided to
all lots within the development. Gas and electric service for the
proposed project is located withih Alga Road adjacent to the northern
property boundary.
• Sewer service will be provided from an existing sewer main
located along the eastern property boundary. This main has been
designed to handle the effluent from the La Costa Meadows development
as yvell as from the subject property. Sewer service will be provided
by the Leucadia County Municipal Water District.
Water lines for _Alga_ . Hills will tie into existing lines
located within Alga Road and Alicante Road. This service will be
provided by the Carlsbad Municipal Water District.
All utilities, with the exception of the existing San Diego Gas
and Electric power lines, will. be placed underground to eliminate
their visual impact~
k) Community Services
Alga ; -~ Hills is located within the Escondido Union High
School District and the Rich-Mar Union Elementary School District.
The development of this site will place a minimal demand on schools
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within the La Costa area. An estimated 41 elementary school age
• children and 28 high school age children will live within the proposed
development site. The developer is working with both the elementary
anq high sch9ol districts to insure adequate facilities for stud.ents from
the development. Eight elementary school sites and two junior high
school sites will be provided within the framework of the Master
Development Plan for La Costa to allow for the eventual construction
of schools.
The C.ity of Carlsbad Police Department services all areas with.in
the corporate limits of the City of Carlsbad and, at present, one patrol
car .is on duty 24 hours a day in the La Costa ~rea.
The City of Carlsbad Fire Department has a substation .in La
Costa, one mile from the proposed project site. This subs tat.ion,
located at the intersection of El Camino Real ·and Arena! Drive, would
serve the Alga Hills development. •
' The Tri-City Hospital in the City of Oceanside will serve the
Alga Hills development. This hosp.ital is located approx.lmately nine
miles north· of the proposed site at the .intersection of Vista Way and
• Thunder Drive.
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ANY IRREVERSIBLE ENVIRONMENTAL EFFECTS WHICH CANNOT BE
AVOIDED SHOULD THE PROPOSAL BE IMPLEMENTED
• The adverse environmental effects resulting from the development
of Alga Hills are typical impacts which would result from the
construction of any residential development; These adverse en-
vironmental effects are:
1.. .A decrease in the amount of undeveloped land in the City
of Carlsbad by 62 acres. A portion of this land has pre
viously been disturbed through its use as an earth borrow
area, and is of minimal re source value.
2. An increase in traffic on Alga Road and Alicante Road. The
circulation system of La Costa and surrounding areas has
been de signed to accommodate this-anticipated traffic
increase.
• 3.. An increase in air and noise pollution associated with
the increased traffic.
4. An increase in noise associated with construction on
the site. This noise will be of a temporary nature,
lasting only until the project has been completed.
5. A minimal increase in the demand for public, utilities.
6. A decrease in water quality associated with hydrocarbons,
fertilizers, and chemicals. collected by runoff from urban
areas.-This decrease in water quality is typical o{ all •
urban development and cannot be avoided.
7. A: minimal demand on schools attributed to the increase.ct
_student population. Eight elementary_ school sites and
two junior high school sites will _be provided within the
framework of the La Costa Master Development Plan.
8. A decrease in the amount of wildlife habitat available arid
a displacement of wildlife from the graded portions of the
_project site .
9. An increase in runoff.·.
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Beneficial _environmental effects resulting from the development of
Alga Hllls are:
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To provide 414 condominium homes for families in the City·
of Carlsbad.··. These homes will be located within the La
Costa Development, which includes provisions for recrea
tional, servic'e, educational, and commercial facilities.
An increased tax base in the City of Carlsbad.
.A.subsJantial Jncre_ase in the number of trees located on
the project site.
A long-term stabilization of this disturbed terrain, re-s_ulting
in reduced erosion.
An improvement of access routes for fire and police
protection and an expansion of water service to the project
site and the surrounding area for fire protection.
An overall increase in vegetation through landscaping of
the project site .
An increase in recreational facilities.
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C. MITIGATION MEASURES PROPOSED TO MINIMIZE THE IMPACT.
Various measures will be taken to minimize the environmental
effects of the development of Alga Hil_ls. Large expanses of
open space will separate each structure and the San Diego Gas And
Electric easements will be left in their natural conditions until
lots contiguous to them are developed, at which time they may be
landscaped.
Grading of the site will be kept to a minimum. Pads will be
graded to slope away from the lips of fill slopes, or drainage facilities
• will be constructed to avoid damage to the slopes by storm runoff.
Cut and f~ll ~.lopes will be planted as early as possible to stabilize
the. slopes and reduce erosion. This will also reduce the visual
impact of the projec_t until the individual lots can be landscaped.
All utilities, with the exception of the San Diego Gas and
Electric easements, will be pl~,wed underground to eliminate their
visual impact .
An investigation d the proposed project site was conducted
to determine the existence of archeological or historic~! resources on
the site:. No historica~ sites were discovered and no archeological .sites
were uncovered.
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Additional mitigating measures are the result of the total La
Costa: Development. Over thirteen percent of La Costa can be
classified as Open Space. Some of this area is devoted to specific
recreational usage (the golf course, country club, spa, and riding
facilities) , while most is left undeveloped to be part of an area:--wide
hiking, equestrian, and picnic resource for the residents of the area.
La Costa also has provided approximately 200 acres of land for
commercial usage, including 110 acres for a regional shopping center.
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D. ALTERNATIVES TO THE PROPOSED ACTION
Many alternatives are always available regarding land use
decisions. The determination of the density of dwelling units and
their relationship to transportation faciUties, utilities, community
services, and other land uses involves an infinite number of variables.
One alternative which is always available is to leave the property
under private ownership in its undeveloped condition.
• None of the environmental impacts discussed in this report
would occur if the "no-project" alternative is selected. However,
•
other impacts would occur to·the site through human and vehicular
activity on the site. This activity would result in displacement of
wildlife and disruption of the :vegetation. Any other form of residential
development would have impacts similar to the proposed development
of this site .
. A second alternative is public aqquisition of the site to either
retain it as an open space area or develop it as a park. No public
_agency has expressed a desire to purcha·se the project site for r·etention
as open space or development as a park. There is nothing unique about
the site that would require its preservation in its present state.
Any other form of residential development would have impacts
similar to the proposed projects. Development at a higher density
• would place a greater demand on utilities and public services, and
more traffic would be. generated. Development at a lower density
would require less utilities and public services, and less traffic would
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be generated.
Commercial or industrial development of the project site would
not be consistent with ·.the planned land use of the City of Carlsbad
and the La Costa Master Development Plan.
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E. THE RELATIONSHIP BETWEEN LOCAL SHORT-TERM USES OF MAN'S
ENVIRONMENT AND THE MAINTENANCE AND ENHANCEMENT OF LONG
TERM ENVIRONMENTAL PRODUCTIVITY
The basic long-term effect of 1the development of Alga
Hills on the environment is the loss of 62 acres of undeveloped land.
Accompanying this loss would be the removal of a small amount of
wildlife habitat. A portion of this site has previously been disturbed
, ·through·its ·use as ·an e-arth·borrow area, and is of minima1 resource
value. There is nothing unique about the project site which would
require its preservation in its existing state.
The approval of the proposed tentative map and specific plan
is the commitment of the land for residential use. The project will
permit 414 families to move into a modern residential development.
The continuing growth of San Diego County and the City of Carlsbad
requires further development. Until growth of the population can be
controlled, either expansion or congestion mu?t occur.· ..
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F. ANY IRREVERSIBLE ENVIRONMENTAL CHANGES WHICH WOULD BE
INVOLVED IN THE PROPOSED ACTION SHOULD IT BE. IMPLEMENTED
The direct environmental -effect of the development of Alga .
Hills is the commitment of 62 acres of undeveloped land to urbanization.
The property will be altered to accommodate a residential land use
and in thE;i process its physical and biological characteristics ,will be
changed.
The indirect effect of the development of the project site is
thE; construction of 414 condominium units, and the resultant consump
tion of building materials and natural resources. Public services and
utilities will have a greater demand placed upon them.
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G.· _ THE GROWTH -INDUCING IMPACTS OF THE PROPOSED ACTIVITY UPON
THE NEIGHBORHOOD AND/OR COMMUNITY
The growth inducing aspects of the proposed development of Alga
Hills reflect an orderly growth of resident.ial land use in the La Costa
area and the City of Carlsbad. This growth will supplant the existing
·use of the land. Development of Alga Hills will have certa.in growth
inducing .impacts on the undevel~ped ,agricultural land to the north. . '
Agricultural lands have been considerably reduced over the past 2 0
years by urban development. Although agriculture .is the fourth largest
industry in San Diego County, crop ·acreage has been reduced from
120,365 acres in 1950 to 62,500 acres in 1970.
Although Alga Hills is being processed by the City as an individual
project, many of the potential. impacts with which it is associated will
be the same concerns generated from the other projects within the south
west corner of the C.ity of Carlsbad. The proposed action follows a
-trend of most American cities to decentralize residential and commercial -•
activities away from the city, a:trend foward urbanization of non-urban and
agricultural peripheral areas. Although Alga Hills is not a major con-.
tributor to the depletion of agricultural land, it does continue and perhaps
accelerates the trend towards urbanization .in the south Carlsbad area.
Denial of the tentative map and spec.ific plan would not appreciably
diminish the present growth inducement in the area. Water and sewer.
facilities have been installed which anticipate the development of the
property for urban use.
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H. THE BOUNDARIES OF THE AREA WHICH MAY BE SIGNIFICANTLY AFFECTED
BY THE PROPOSED ACTIVITY
The boundaries of the areas which may be affected by the develop
ment of Alga· • .·:. Hills depends on the enviro_nmental effect being
considered. The effects of traffic generated by the project and subsequent
noise and air pollution problems are likely limited to a three mile
range. Beyond that limit, the traffic· is sufficiently dispersed so that
its effects wouid be negligible.
The effect of the project on the biological component of the
environment will generally be limited to the immediate vicinity of the
project site, but _may range as far· as the Batiquitos Lag~on. The proposed
project site is completely surrounded by existing or pending development,
thus it is unlikely that the development of Alga Hills will significantly
affect areas outside .of the La Costa Development.
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CERTIFICATION OF ACCURACY AND QUALIFICATION OF INDIVIDUALS
PREPARING THE ENVIRONMENTAL' IMPACT STATEMENT
The information contained within this analysis is certified to be
accurate and correct to the best of my knowledge and belief, and
reflects the environmental impacts associated with Alga Hills. .
This· report was prepared by Jeffrey Roy Lundstrom, Environmental
Consultant for Rick Engineering Company, consultant to the applicant, .
. La Costa Land Company.
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LIST OF ALL AGENCIES, ORGANIZATIONS, OR INDIVIDUALS CONSULTED
David D. Smith and Associates, Environmental Consultants
Waiter R. O::lening, Ph.D., Botany-
David D. Smith, -PhoD., Geology
Ronald V. May, B. S. , Anthropology
Charles W. Hughes, B .A. , History
Rick Engineering Company, Planning -Consultants and Civil Engineers
San Diego Museum of Man
• La Costa Land Company
• Escondido Union High School District
Rich-Mar Union Elementary School District
City of Carlsbaa.
Planning Department
Fire Department
Police Department
. County of San Diego
Traffic Department
. Planning Department
• Zoning Department
City of Oceanside
. .
Leucadia County Municipal Water District
Carlsbad Muncipal WaterDi"strict
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APPENDIX A
PARTIAL SPECIES LIST
Shrub, tree, and animal species observed (or to be expected
based on habitat -shown with asterisk) within the total La Costa Development
are listed. The herbaceous dicot and grass species were not
included in this survey.
California adolphis •
* Broom bacchari s
bladder pod
* Chaparral broom
California B'uckwheat
* beavertail cactus
* coastal barrel cactus·
* cattail
• San Diego ceanothus
* wantystem ceanothus
chamise
wild cucumber
chaparral currant
deerweed
elderberry
California encelia
·filareB.-·.
* California fuschia
haplopappus
wild honeysuckle
lemonade berry
eastwood manzanita
mission manzanita
monkey flower
* mule fat
· coast live oak
scrub oak
* pepper tree
Oalifornia poppy
* rattle weed
redbeny
* rock rose
bush rue
Adelphia californica
Baccharis sarothroides
Isomeris arborea
Baccharis pilularis consanguinea
Eriogonum fasciculatum
Opuntia sp.
Echinocactus viridescens
Typha sp.
Ceanothus cyaneus
Ceanothus verrucosus
Adenostoma fasciculatum
Marah macrocarpus
Ribes malvaceum
Lotus scopavius
Sambucus mexicana
Encelia californica
Erodium spd
Zauschneria californica
Haplopappus venetum
Lonic·era subspicata
Rhus integrifolia
ArctastaphyJos glandulosa
Xylococcus bicolor
Mimulus puniceus
Baccharis viminea
Quercus agrifolia
Quercus ddmosa
Shinus molle
Eschscholzia californica
Astragalus sp.
Rhamnus crocea
Helianthemum scoparium
Cueoridium dumosum.
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Shrubs and Trees (continued)
black sage
* white sage
California sagebrush
* Spanish bayonet·
Spanish dagger
laurel sumac
* thistle
tree tobacco
toyon
wire grass
Introduced:
eucalyptus
tecate cypress
European olive
* sycamore
willow
Small Mammals and Rodents
• * southern pocket gopher
* pocket mouse
cottontail & brush rabbit
jackrabbit .
·* kangaroo rat:,
• .. *shrew
ground squirrel
other rodents
Larger Mammals
badger
bobcat
coyote
mule deer
* grey fox
*raccoon
spotted skunk
striped skunk
Salvia mellifera
Salvia 'apiana
Artemi sia californica
Yucca whipplei
Yucca schidigera
Rhus laurina
Cynareae gen. spo
Nicotiana glauca
Hetermoles arbutifolia
Junucus acutus
Eucalyptus sp.
Cupressus forbesii
Olea europaea
Platanus r'acemosa
Salix sp. •
The mys bottae
Perognathus SPo
Sylvilagus sp.
Lepus californicus
Dipodomys s_p.
. Sorex sp.
. Otospermop,hilus sp.
Peromyscus sp.
Neotoma sp. •
Microtus sp.
Taxidea -taxus
Lynx rufus
Canis latrans
Odocoileus hemianus
Urocyon cinereoargenteus
Procyton lotor
.Spelogale putorius
. Mephitis mephitis
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Reptiles
* frogs
* frogs
* coast horned lizard
* southern alligator lizard
* western fence lizard
* skunk
* garter snake
* gopher snake
* kingsnake
·*rattlesnake
* striped racer
* toads
* toads
Birds
Ill
mountain blue bird
common bushtit
* house finch
red-shafted flicker
* green heron
.. Anna's hummingbird
killdeer
* kill bird
horned lark
western meadowlark
* Say's phoebe
California quail
common raven
road runner
loggerhead shrike
sparrows·
* starling
swallow
California thrasher
brown towhee
vireo
wrentit
hyla sp.
rana sp.
Phryri.osama coronatum
Gerrhonotus multicarinatus ·
Sceloparous occidentalis
Eumeces sp.
. Thamnophis sp.
Pituophis melanoleucus
Lampropeltis getulus
Crotalus sp.
Masticophis lateralis
Bufo sp.
Scaphicpus sp.
· Sialia currucoides
Psaltriparus minimus
Carpodacus mexicanus
Colaptes. cafer
Butorides virescens
Calopte anna
Charadrius vociferus
Tyrannus sp.
Eremophila alpestris
Sturnella neglecta
Savornis saya
Lophortyx californicus
• Corvus corax
Geococcyx californianus
Lanius ludovicianus
Zonotrichia sp. 1 melospiza sp.,
and others
Sturnus vulgaris
Hirundinidae gen. and. sp.
Toxostoma redividum
Pipilo fuscus
Vireo sp.
Chamaea fasciata
Hawks, Owls, and· Other Predatory Birds Included:
Cooper's hawk
marsh hawk
Accipiter cooperi
. Circus cyaneus
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Birds (continued)
red-tailed hawk
sparrow hawk
Swain son• s hawk
white-tailed kite
burrowing ow 1
•
Buteo j amaicensis
Falco sparverius
Buteo swainsoni
Elanus leucurus
Speotyto cunicularia
TENTATIVE
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JYPICAL PRMISI'i CQU!l'I ND..,..._._.
·---.
MAP • OF· -CARLSBAD TRACT NO. 73-26 I ,-
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