HomeMy WebLinkAboutHDP 2020-0001; COLLEGE BOULEVARD MITIGATION; Vegetation Map Update; 2019-09-060 't-ALDERJ
ENVIRONMENTAL, INC 3245 University Ave. #1188 I San Diego, CA 92104 I Phone/Fax: 619.284.3815
September 6, 2019
Mr. Kurt K. Wickham
West Partners
5800 Armada Drive, Suite 100
Carlsbad, CA 92008
Subject: College Boulevard Wetland Mitigation Parcels-Vegetation Map Update
FEB 1 ! 2020
CITY OF CARLSBAD
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Dear Mr. Wickham:
This letter presents the results of a site visit to update/confirm the vegetation mapping of the
wetland mitigation parcels for the College Boulevard Mitigation project. The two parcels (APNs
209-060-71 and APN 209-060-72) are located adjacent to Agua Hedionda Creek, north of the
intersection of College Boulevard and Sunny Creek Road and south of the intersection of Cannon
Road and College Boulevard, within the northeast quadrant of the city of Carlsbad, county of San
Diego, state of California.
The purpose of the visit was to determine if there have been any changes to the mapped vegetation
on the site since approval of the project's MND in April, 2015.
Methods
Prior to visiting the site, available maps, air photos, and existing conditions material for the site were
reviewed. The previous vegetation mapping conducted for the College Boulevard Mitigation project
also was reviewed and printed to be used as filed maps. Alden biologist Greg Mason then conducted
a site visit on September 5, 2019 to identify and map existing biological resources on site.
The entire project site was walked and observed plant and animal species were recorded. Plant
species names followed the Jepson Manual (Baldwin 2012). Vegetation communities were mapped
according to Holland's Preliminary Descriptions of the Terrestrial Natural Communities of
California (Holland 1986) as updated (Oberbauer 2008).
No focused sensitive animal species were conducted; however, sensitive animal species were
searched for opportunistically during the field visit.
Results
The site conditions and existing vegetation remain essentially unchanged from the previous
mapping. The equestrian center now appears to be unused and in a dilapidated condition; however,
no sensitive biological communities have become established and areas mapped as disturbed
previously remain so. The previously mapped vegetation communities are still intact and there was
no appreciable change in either the type, cover, or density of native vegetation within and adjacent
to the creek. As such, no changes to the biological resources mapping were made.
1
,i,A L D E'N 0
ENVIRONMENTAL, INC
Vegetation communities mapped within the study area are presented in Table 1 and Figure 3.
Table 1
EXISTING VEGETATION COMMUNITIES
Vegetation Communities Parcel C Parcel D
Coastal Sage Scrub 0.05 -
Non-native Grassland 0.12 -
Riparian (Southern Willow) Scrub 0.72 -
Riparian (Sycamore) Woodland 1.17 -
Disturbed Wetland (Arundo) 0.04 -
Eucalyptus Woodland 0.68 0.01
Agricultural Lands 0.37 -
Disturbed Lands 5.57 6.07
Ornamental 0.51 0.01
TOTAL 9.23 6.09
The mapped vegetation communities and corresponding acreages are the same as presented
previously in the MND for the College Boulevard Mitigation project. As such, no additional
analyses or impact calculations are required to update the biological resource impacts.
If you have any questions or need additional information please call.
Sincerely,
Greg Mason
Principal/Senior Biologist
Attachments:
Figure 1 Regional Location
Figure 2 Project Vicinity
Figure 3 Biological Resources
Representative Photos
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Regional Location
COLLEGE BOULEVARD
WETLAND MITlGA TlON PROJECT
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c::> Boundary -Mitigation Area
Project Location
COLLEGE BOULEVARD
WETLAND MITIGATION PROJECT
0. Photo Locations
Mitigation Area (Parcel C)
Vegetation Communities
Wetland/Riparian
0 Riparian (Southern Willow) Scrub
-Riparian (Sycamore) Woodland
-Disturbed Wetland (Arundo)
Upland
Coastal Sage Scrub 0 Non-native Grassland
Other Areas
0 Agricultural Lands
C) Eucalyptus Woodland
0 Disturbed Lands
0 Ornamental
Sensitive Species
• Cooper's Hawk (Accipiter cooperii)
■ Southwestern Spiny Rush
(Juncus acutus ssp. leopoldii)
$
0 75 150
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ALDEN
ENVIRONMENTAL, INC
Biological Resources
COLLEGE BOULEVARD
WETLAND MITIGATION PROJECT
REPRESENTATIVE PHOTOGRAPHS
Photo Point 1. 09/05/19
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