Laserfiche WebLink
ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heron,R.E.H.S. 304 East Weber Avenue, Third Floor Carl Bergman,R.E.H.S. <br /> { <br /> �: - '• Director Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California .95202-2708 Douglas W.Wilson,R.E.H.S. <br /> �., \P.• Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> g6'06,i, Laurie A.Corona,R.E.H.S. Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> JAY MCILRATH NOV O 7 2003 <br /> JC & M MCILRATH <br /> PO BOX 326 <br /> STOCKTON CA 95201 <br /> RE: JA\L'iR Service Site Code: # 1667 <br /> 4075 Main Street <br /> Stockton CA 95212 <br /> WORK PLkN: "Interim Groundwater Treatment System Installation Work Plan" <br /> DATED: October 2003 <br /> PREPARED BY: GHH Engineering,Inc. <br /> APPROVED: [xl-WITH CONDITIONS,SEE BELOW <br /> DIS-PPROVED [ ] <br /> A_DEQU 1TF AND NE ESSARY ELEMENTS OF THE WORK PLAN [H&S 25299.37,subd(c)(3)1: <br /> 1. Installation of C-Sparge ozone injection remediation system for interim remediation of onsite groundwater <br /> contamination. <br /> COMMENTS AND CONDITIONS: <br /> 1. GHH did not state target depths for installation of the ozone injection sparge points;please provide this information. <br /> 2. SJC/EHD recommends,that to be more effective,and to possibly save time and money later,sparge points should <br /> be installed to both sand intervals logged in CPT-1 and SB-1,to total depths of approximately 72 and 110 feet bsg. <br /> Final verification of the need to remediate the deeper zones can be evaluated once deep onsite monitoring wells are <br /> installed;SJC/EHD believes it would be beneficial to complete this task prior to installation of the sparge points. <br /> 3.Note that this is interim remediation of the onsite groundwater contamination only. Further remediation of soil and <br /> both the onsite and offsite groundwater contamination may still be necessary. <br /> Lori Duncan,Senior REHS <br /> Nuel C.Henderson,Jr.,R.G. <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James Barton,CVRWQCB <br /> Tom Ballard,GHH Engineering,Inc. <br />