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April 28, 2023
Oscar Romero
City of Chula Vista
Development Services Department
276 Fourth Avenue, Building B
Chula Vista, CA 91910
Via e-mail: oromero@chulavistaca.gov
COMMENTS ON THE MITIGATED NEGATIVE DECLARATION FOR IS21-0002
Dear Mr. Romero:
Thank you for the opportunity to comment on the Mitigated Negative Declaration for the above
referenced project. The County of San Diego Vector Control Program (VCP) is responsible for the
protection of public health through the surveillance and control of mosquitoes that are vectors for
human disease including West Nile virus (WNV). The VCP has completed their review and has the
following comments regarding the proposed project.
1.The VCP respectfully requests that the Mitigated Negative Declaration address potential
impacts from possible mosquito breeding sources created by the project and that the project
be designed and constructed in a manner to minimize those impacts. Specifically, ensure
construction-related depressions created by grading activities, vehicle tires, and excavation do
not result in depressions that will hold standing water. In addition, ensure drains, BMPs, and
other structures do not create a potential mosquito breeding source. Any area that is capable
of accumulating and holding at least ½ inch of water for more than 96 hours can support
mosquito breeding and development. Finally, if habitat remediation is required for the project,
the design should be consistent with guidelines for preventing mosquito habitat creation.
2.Please note, the VCP has the authority pursuant to state law and County Code to order the
abatement of any mosquito breeding that does occur either during construction or after the
project is completed that is determined to be a vector breeding public nuisance. The VCP will
exert that authority as necessary to protect public health if the project is not designed and
constructed to prevent such breeding.
3. For your information, the County of San Diego Guidelines for Determining Significance for
Vectors can be accessed at
DEPARTMENT OF ENVIRONMENTAL HEALTH AND QUALITY
VECTOR CONTROL PROGRAM
5570 OVERLAND AVENUE, SUITE 102, SAN DIEGO, CA 92123
Phone: (858) 694-2888 Fax: (858) 505-6786
www.SDVector.com
HEATHER BUONOMO, REHS
DIRECTOR OF ENVIRONMENTAL HEALTH AMY HARBERT
DIRECTOR
Letter 2
L2-1
L2-2
Mr. Romero
April 28, 2023
City of Chula Vista
http://www.sandiegocounty.gov/content/dam/sdc/pds/docs/vector_guidelines.pdf and the
California Department of Public Health Best Management Practices for Mosquito Control in
California is available at
https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/MosquitoesandMosquitoBorneDiseas
es.aspx#
The VCP appreciates the opportunity to participate in the environmental review process for this
project. If you have any questions regarding these comments, please contact Daniel Valdez at 858-
688-3722 or by e-mail at Daniel.Valdez@sdcounty.ca.gov.
Sincerely,
DANIEL VALDEZ, Registered Environmental Health Specialist
Vector Control Program
L2-2
cont.
L2-3