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t <br /> San Joaquin Pq u rN qUln County DIRECTOR. <br /> Environmental Health Department Donna Neran,RENS <br /> 600 East Main Street <br /> ASSISTANT DIRECTOR <br /> T <br /> Stockton, California 95202.3029 Laurie Cotulla, REHs <br /> '{ <br /> - <br /> ;7'. -L. PROGRAM COORDINATORS <br /> ��' Mike Huggins, RENS, RDI <br /> Website: WWW.sjgov.org/ehd Margaret Lagorio,REHS <br /> Phone: (209)468-34.20 Robert McClelton, <br /> F � REHS­ <br /> Fax: (209)46410138Jeff Carruesco, RENS, RD <br /> HKasey Foley, REHs <br /> i <br /> �. 29 June 2009. <br /> Carl Navarra <br /> } <br /> 475 Blewett Road <br /> Tracy, CA 95376 N <br /> Subject: Navarra Property <br /> 7500 W. Eleventh Street <br /> Tracy, CA 95376 <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed t <br /> the copy of the access agreement-between you and Mr..Russ Zelman, owner of the property at. <br /> 7501 West Eleventh Street, Tracy, ,and.has conducted`a 30-day comment period to,obtairf input" <br /> on the remediation system from the. people most-likely to.,be'affected by it; no comments were } <br /> Ke <br /> :. 3 <br /> received. The EHD therefore reapproves the corrective action plan presented in Corrective <br /> Action Plan for Former Fueling Station 7500 West Eleventh Street, .Tracy, California (CAP), <br /> dated 25 July 2007 as augmented by Corrective Action Plan (Addendum) far Former Fueling <br /> Station 7500 West Eleventh Street, Tracy, 'California .(CAP Addendum), dated October 2007 <br /> and memo dated'31 MarcH 2008; all prepared by The San Joaquin Company, Inc. (TSJCI). <br /> .. ►� , <br /> k; <br /> The CAP and CAP Addendum are reapproved, as was previously approved by the EHD;Ietter <br /> dated 15 February 2008. Provide the EHD a minimum 48-hour notification prior-to.the initiation'- <br /> of any field work. <br /> The EHD has also reviewed Work Plan for Evaluation of MTBE Migration and Soil-Gas Survey <br /> (WP), dated. Apfil 2009, prepared by TSJCI in response. to the EHD directive letter of <br /> 28 December 2009. TSJCI presented an evaluation of the potential for vapor4intrusion-issues`� j <br /> related to the unauthorized release from yourformer u.ndergrowid-storage tank (UST) system. <br /> TSJCI utilized the Environmental Screening Levels (ESLs) established by the San Francisco <br /> Bay Regional Water.Quality Control"Board'to evaluate the potential for vapor intrusion issues {r <br /> and found the potential to be low. TSJCI also noted that, according to authoritative guidance fi <br /> documents, the soil conditions and high water table conditions at your site are not amenable to <br /> soil gas sampling for evaluating the vapor intrusion potential. TSJCI recommended not <br /> conducting a soil gas investigation and requested a written response from the EHD regarding <br /> this recommendation. The EHD accepts the conclusion of the vapor intrusion evaluation <br /> presented by TSJCI and does not require collection of soil gas samples. <br /> To further assess the migration of MTBE, TSJCI proposed in WP to advance six push probe <br /> borings to total depths of .20 feet below surface grade (bsg), collect soil samples at 5-foot <br /> intervals and collecting groundwater samples from,the borings utilizing a temporary well casing <br /> inserted E into the boring. TSJCI proposed submitting the groundwater samples and selected soil <br /> j, <br /> I <br /> Work Plan Approval Letter 0609 <br /> i <br /> I <br /> Work Plan Approval Letter 0609 <br /> Ef <br />