HomeMy WebLinkAboutCDP 03-12; ADAMS STREET SFR NORTH; ADDENDUM TO UPDATED BIOLOGICAL RESOURCES IMPACT ASSESSMENT; 2002-11-1515 November 2002
Mr. John St. Claire
North County Custom Homes, Inc.
1839 Freda Lane
Cardiff by the Sea, CA 92071
Re: Addendum to Updated Biological Resources lmpactAsse.ssment for the Adams Street
Residential Parcels 206-192-34 & 206-192-38, City of Carlsbad, San Diego County,
California.
Dear Mr. St. Claire:
This letter is provided as a brief addendum to my updated biological resources impact assessment
for the Adams Street parcels 206-192-34 and 206-192-38 dated October 24,2002. The anticipated
project impacts are herein revised based on recent modifications in the proposed development. The
updated report also incorrectly made reference to a thirty-foot brush management zone. The
proposed development overlay actually incorporates a fifty-foot brush management zone.
REVISED ANTICIPATED PROJECT IMPACTS
Table 2 has been edited to reflect direct habitat impacts associated with the revised development
overlay (See attached revised Figure 3).
Coastal Sage Scrub
A total of 0.34 acre of coastal sage scrub would be directly and permanently impacted by the
proposed development including the fifty-foot brush management zone. An additional 0.03 acre of
coastal sage scrub would be directly and permanently impacted in association with construction of
the off-site driveway access. Because coastal sage scrub is a depleted habitat type and the focus of
regional conservation programs (e.g., NCCP), all impacts to coastal sage scrub are considered
significant.
Disturbed Coastal Sage Scrub
A total of 0.11 acre of disturbed coastal sage scrub would be directly and permanently impacted by
the proposed development. Impacts to this habitat type are considered less than significant.
Ruderal Land and Developed Areas
Impacts to such areas are considered not significant.
Sensitive Plant Species
California adoiphia and summer holly are found in significant numbers throughout the coastal sage
scrub habitat within each parcel. It is estimated that approximately 50 individuals of each species
would be directly impacted within the fifty-foot brush management zone. These impacts are
considered less than significant due to the regional presence of these species within other
conserved portions of the City's lIMP.
V
Table 2. Anticipated Vegetation Community Impacts Associated with
Proposed Development of Adams Street Residential Parcels 206-192-34 and 206-192-38.
Habitat Type Existing Proposed Remaining
Acreage Impacts Acreage
Parcel 206-192-34
Coastal sage scrub 0.6320 0.19 ac 0.44 at
Disturbed coastal sage 0.04 at 0.04 ac - scrub
Ruderal land 0.06 at 0.06 at -
Developed 0.05 20 - 0.34 at
Total 0.78 ac 0.29 at 0.78 at
Parcel 206492-38
Coastal sage scrub 0.36 at 0.116 at 0.244 at
Disturbed coastal sage 0.07 at 0.07 at - scrub
Ruderal land 0.15 at 0.15 at -
Developed 0.06 at - 0.40 at
Driveway Access)
Coastal sage scrub 0.09 at 0.03 at 0.06 at
Disturbed coastal sage
scrub
Ruderal land
Developed 0.30 at - 0.33 at
Total 0.39 at 0.03 ac 0.39 at
CONCLUSIONS
As discussed in the update report, unless otherwise indicated in an identified standards area for a
particular zone, a minimum of 67% of the coastal sage scrub (CSS) habitat shall be conserved within
the standards area. As proposed, the combined development of parcels 206-192-34 and 206-192-
38, including the fifty-foot brush management limits, would conserve 69.1% of the 088 (individual
percentages totaling 69.8% and 67.7%, respectively). Therefore, the proposed development
significantly conserves CSS consistent with the HMP planning standards. The HMP does not require
off-site mitigation for projects that conserve at least 67% of the habitat on-site. Therefore, additional
off-site mitigation should not be required.
Please feel free to call me if you have any questions at (558) 259-8113.
Very tqily yours.
JefNJ 1rtiomas
Environmental Consultant
Attachments: Revised Figure 3
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