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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> .0 Unit Supervisors <br /> Donna K. Heran, R.E.H.S. Carl Borgmaq R.E.H.S . <br /> Director 304 East Weber Avenue, Third Floor <br /> . Fhnft .: Mike Huggins, R.E.H.S ., R.D.J . <br /> 1 kISY1'i. <br /> At Olsen, R.E.H.S. Stockton , California 95202-208 Douglas W. Wilson, R.E.H.S. <br /> • . P Program Manager Telephone: (209) 468 -3420 Margaret Lagorio, R.E.H.S . <br /> 9 � F ORa Laurie A. Cotulla, R.E.H.S. <br /> Fax : (209) 464-0138 Robert Meclellnn, R.E.H.S. <br /> Program Manager Mark Barcellos, R.E.H.S. <br /> ESTATE OF J SHAUGHNESSY JERRY CASTRO <br /> RICHARD GIBSON , ESQ PACIFIC CAR WASH <br /> 2027 GRAND CANAL BLVD STE 35 4405 PACIFIC AVE <br /> STOCKTON CA 95207 STOCKTON CA . 95207 <br /> WORK PLAN : "Feasibility Studies and Monitoring Well Installation :'(• I L E COPY <br /> DATED : February 15, 2002 <br /> PREPARED BY: Tim Cuellar — Advanced Geo-Environmental Consulting <br /> STATUS: APPROVED <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H &S 25299 . 37 , <br /> subd (c)(3)1 : <br /> • Install one 6" groundwater extraction well offsite screened 20' to 45' bgs <br /> and , <br /> Install three 4" soil vapor extraction (SVE) wells on and offsite, screened <br /> 10' to 30' bgs and, <br /> Install two 2" groundwater monitoring wells offsite screened 25' to 45' bgs <br /> and, <br /> Install one 2" in -situ air-sparge (IAS) well onsite onsite screened 35' to 40' <br /> bgs and evaluate SVE effectiveness with and without the operating air <br /> sparge system online and, <br /> • Perform a 24-hour groundwater pump test and, <br /> Conduct a 8-hour SVE test and , <br /> Conduct a 48-hour IAS pilot test and, <br /> Conduct a 8-hour SVE / IAS test and, <br /> Analyze selected soil, vapor, and groundwater samples for TPHg, BTEX, <br /> 1 ,2-DCA, EDB, Total Lead, MtBE and other Oxygenates and, <br /> Characterize extracted groundwater, haul , and dispose of properly and , <br /> Submit a Corrective Action Plan , including a Problem Assessment Report and <br /> Remedial Action Plan (including recommendations, costs , and schedule) . <br /> COMMENTS AND CONDITIONS: <br /> Offsite City of Stockton Encroachment and Revocable permits and EHD <br /> well installation permit applications plus $89 fee per parcel are to be <br /> submitted to EHD by May 16, 2002. <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN rH &S 25299 . 37, subd©(3)1 : <br /> none <br /> DATED : March 15. 2002 BY: ✓ GLclf #SibS�9 <br /> Michael Infurna , Se or REHS (209) 468-3454 <br /> [axed to consultant on : . <br />