HomeMy WebLinkAboutCT 06-13; Tabata 10; Tentative Map (CT)Dossey 18826 Cmto Cantilena^ll2
San Diepo, CA 92128
A A'^<5nriatP«? Phone: (760M36-0908 Ot A\t>i5UUIcllfc!^ Fax:(760) 436-0971
September 1,2008
Greg Hanington
P.O.Box 943
Carlsbad CA 92018
Mr. Hanington,
Dossey & Associates reviewed the vegetation mapping for the Tabata-10 project in the City of Carlsbad
(APN 212-050-32033). The original report mentioned the potential for several rare plant spedes. This
letter addresses that potentiaL After the original report was submitted additional information on the land
use history for the site was provided to Dossey and Associates: records of long tenn herbicide usage
and tomato cultivation were demonstrated at the site. While plowing for brush control alone will not
preclude the survival of some of frie spedes the active cultivation of tomatoes and it assodated weed
control measures would eliminate any potential for these species to still persist.
According to the records provided to Dossey and Associates by Pasco Engineering and the Property
Ovmer the site was used to cultivate tomatoes for at least ten years. With this infomiation Dossey and
Assodates would revise our previous assessment and change our conclusions so that there is no
potential for any HMP narow endemics remaining on the site.
If you have any question or concems regarding this contract please don't hesitate to call.
Thank-you,
Rod Dossey
Principal
May 14, 2009
Greg Harrington
P.O. Box 679,
Carlsbad, CA 92018-0679
Reference: Results of a Focused Thread-leaf Brodiaea {Brodiaea filifolia)
and Orcutt's Brodiaea {Brodiaea orcuttii) Survey for the
Tabata 10 Property
Dear Mr. Harrington:
This letter report summarizes the fmdings of a focused thread-leaf brodiaea
{Brodiaea filifolia) and Orcutt's brodiaea {Brodiaea orcuttii) survey for the
Tabata 10 property. The property is located within the City of Carlsbad, at the
intersection of El Camino Real and Camino Hills Drive (Figure 1). Brodiaea
typically occur in non-native grassland (NNG) located on clay soils. These
conditions are known to occur throughout the Carlsbad area and to exist within the
property boundary.
Methodology
The focused survey was conducted by AJJegra Simmons (Assistant Biologist)
within the property on April 9 and May 12, 2009, during the growing season for
Brodiaea (March though June). The survey was conducted on foot, traversing all
appropriate habitat (survey area) within the property. The top of the onsite hill
located in the northem portion of the site was not surveyed as it consists of
development associated with an abandoned home (Photograph 1). However, the
slopes of the hill were surveyed as they are vegetated by mowed NNG. Favorable
environmental conditions were encountered during the survey (Table 1). Site
photographs are located in Appendix A.
Results
A focused survey for Brodiaea was conducted within all NNG habitat located on
the property (Figure 2). Areas associated with development were not covered as
part ofthe survey effort. Onsite vegetation is sparse as the entire property has
been disced within the past growing season (Photograph 2). The property consists
primarily of weedy vegetation (Photograph 3). Indicators within the NNG
vegetation include: black mustard {Brassica nigra), storksbill {Erodium
cicutarium), bristly oxtongue {Picris echioides), stinging nettle {Urtica dioica),
Bermuda grass {Cynodon dactylon), and wild oat {Avena fatua). Although the
property supports clay soils (Altamont and Salinas clays) and NNG, neither
thread-leaved or Orcutt's brodiaea were detected within the property
(Photograph 4). In addition, Brodiaea corms were not observed or detected within
HDR Engineering, Inc.
8690 Balboa Avenue
Suite 200
San Diego, CA 92123
B58-712-8400
858-712-8333 (fax)
Mr. Harrington
May 14, 2009
Page 2
the property. Any potential Brodiaea occurring within the survey area would
have been readily identifiable at the time of the survey.
Table 1. Survey Dates and Weather Conditions
Survey
Dates Time
Percent
Cloud Cover
Start Stop
Temperature
Start Stop : Winds
04/09/2009 0945-1120 60% cloud 60% cloud 62°F 70°F ; 0-2 mph ;
cover cover
05/12/2009 0945-1050 100% cloud 100% cloud 68T ' 70°F 0-2 mph
cover cover
Conclusion
Brodiaea were not observed within the property during the 2009 survey. In
addition, Brodiaea corms would have been detected as a result of recent discing
but were not observed. Absence of these species may be attributed to the discing
activities within the last growing season.
If you have any questions or concems, please do not hesitate to contact us.
Sincerely,
HDR Engineenng, Inc.
71 J.?--ft-Ch.
Shannon Shea
Senior Biologist
Attachments
7^7\^V<-
Allegra Simmons
Assistant Biologist
HORERgineering.lnc.
KR
ONE COMPANY iA/-/». 5<./i,ii6«
Regional & Vicinity Map
FIGURE 1
Greg Hifmjon | Tabm 10 | (oalte BraAiea Simr, Lmti Repofl
Sun/ey Route
ONE COMPANY I A/^», Sclvi,.
FIGURE 2
Greg Hamn^fon | TrtuU 10 | FocuscdBrodmSurveyLcnrf Report
APPENDIX A
Site Photographs
Photograph I. Northwesterly view of representative Brodiaea habitat in
foreground and abandoned home in background.
Photograph 2. Southeasteriy view of disced property taken from atop onsite hill.
HOR Engineering. Inc
Photograph 3. Southeriy view of property, living vegetation
occurs primarily along the perimeter.
Photograph 4. Example of clay soils located on the project site.
HOR Engineering, Inc