Laserfiche WebLink
"` <br /> ENVIRONMENTAL HEALTH EPARTli�IEN <br /> oPau,N..c , SAN JOA UIN COUNTY i., Unit Supervisors: <br /> Carl Borgman,R.E.H.S. <br /> Heran,R.E.H.S. <br /> Donna K. <br /> < Director 304 East Weber Avenue, Third Floor Mike Huggins,R.E.H.S.,R.D.I. <br /> N: <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> P'.• Program anger Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Ma <br /> • c°:,_..,..;::, Robert MCClellOn,R.E.H.S, <br /> Q�iFo'R� Laurie A.Cotulla,R.E.H.S. Fax: (209) 464-0138 <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> it <br /> " I <br /> p; <br /> PAUL SUPPLE <br /> ARCO PRODUCTS COMPANY <br /> PO BOX 6459 <br /> MORAGA,CA94570 <br /> RE: WORKPLAN APPROVAL LETTER SITE CODE:0710 <br /> ARCO STATION 5469,130 S.WILSON WAY,STOCKTON <br /> WORKPLAN: Work Plan for Additional Site Assessment-and Interim-Remediation Feasibili Testin <br /> DATED: 3 21'1 2002 n: <br /> PREPARED BY: Delta Environmental Consultants Inc. <br /> APPROVED X <br /> NEEDS ADDENDUM <br /> DIRECTIVE <br /> i DISAPPROVED <br /> F <br /> 1' Submit by: March 21 2002 <br /> l ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPJ EAN (H&S 25299.37,subd.(c)(3).):' <br /> 1. Advance CPT boring to 120 ft. below ground surface (bgs) and two soil borings located 2 ft. <br /> from CPT boring. Collect groundwater and soil samples. <br /> 2. Installation of monitoring wells (MW 11-MW 13). Install a well cluster (MW 11 and MWI2) <br /> to the east. MW 11 and MW 13 will be installed approximately 15 ft. below first encountered <br /> groundwater and be screened from 33-53 ft. MW 12 will be installed to depth of:75 ftbgs and <br /> screened from 60-75 ft.bgs. MWl l and MW12 <br /> 3. installation of five C-Sparge wells to 55 ft,bgs(IW-1 through IW-5). <br /> 4. Laboratory Analysis of soil and groiindwater samples for TPHg, benzene, toluene, <br /> e.thylbenzene, total xylenes (BTEX), MTBE, ethyl tertiary butyl ether (ETBE)i di-isopropyl <br /> ether(DIPE), tertiary amyl methyl ether (TAME), tertiary butyl alcohol (TBA), and 1,2- <br /> dichloroethane(1,2-DCA). <br /> COMMENTS fAND CONDITIONS: <br /> ], Prepare and submit periodic status reports documenting the progress of the study and at the end <br /> of six months of ozone injection. Submit a remedial action plan at the end of the interim <br /> remediation/feasibility testing,evaluating feasible remedial alternatives with recommendations for <br /> final remediation. <br /> 2. Forty eight hours notice to EHD is reqUized prior to initiatinfield work. <br /> IEA <br /> I <br /> DATED 3/21/2002 BY <br /> #. Rebecca E:Setliff, ;!. <br /> j Environmental HealthSpecialist <br /> Cc: RWQCB—R5, Marty Hartzell <br /> Delta`Environmental Consultants Inc.—Jay Johnson <br /> i <br /> j <br /> r <br />