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JUN -@2--99 WED 12.55 PM FOOTHILL- EHGIMEEF ING <br />�'-pvf . 7, r <br />JUN 0 3 1999 <br />HEALTH <br />'s S'Etf <br />r ERMI" /'SERVICES <br />Harlin Knoll <br />San Joaquin County Public Health Services <br />Environmental Health Division <br />P. 0. Box 388 <br />Stockton, CA 95201 <br />Fax: 464-0138 <br />Subject: Sun West Liquors, 2449 W. Kettleman Lane, <br />Dear Sir: <br />Groundwater samples taken from the monitoring well <br />analyzed and found to contain both BTEX and MTBE. I <br />Foothill Engineering conduct additional siteinvestigati4 <br />of the contamination. Please find below the proposed i <br />of the contamination indicated in monitoring well GM <br />THE WORK PLAN FOR INSTALLING AND <br />History <br />On 7110/1998 Thorpe Oil of Lodi California ren <br />Property. Soil samples from under the UST's and <br />occurred during the life of the gasoline sales opera <br />determine the vertical and horizontal extent of the 1 <br />The a listing of the results of analysis of the soil so <br />Geornatrix installed a monitoring well GMXI at a lo <br />sampled first groundwater and that analysis is attach <br />BH42, and 141-10) with both soil samples and grog <br />location). All samples on BH#l, BH#2, and BH#3 <br />attached data). <br />Procedure <br />The soil bores for the monitoring wells will be dri <br />extracted at five foot intervals by a standard BX split <br />of fifty feet or to the vertical extent ofthe contaminatii <br />inch PVC well easing with ten feet of screen between <br />details attached). <br />Installation of MW#2 (proposed) will requiredthat a <br />289 367 1163 P,.01 <br />J r Tr <br />- -' EN GINEERJLN G <br />?793 PAIDDY CREEK LANE LC?pf. CA 95240 <br />PH, (209) 368-9381 FAX (209) 367-1163 <br />May 24, 1999 Rev. 5128199 <br />ENVIRONMENTAL HEALTH DIVISION <br />304 E. Weber Ave. Third Floor <br />P. O. Box 388, Stockton CA 95201-0388 <br />Approved <br />Denied ❑ <br />CA Conditions 32(Ab Otti�AAA- L -I'LL <br />ate 0 _ by <br />:stalled by Geomatrix on 412$11999 have been <br />owner of Sun West Liquors has requested that <br />s to determine the horizontal and vertical extent <br />rk plan to determine the extent and the source <br />1. <br />THREE MONITORING WELLS <br />I the three gasoline UST from the Sun West <br />iispellser piping indicated that some leaks had <br />Foothill Engineering did a site investigation to <br />ine contamination on 811311998 and 812111998. <br />,s is attached. <br />ion +1-25 feet south of the UST excavation and <br />Geomatrix also made three soil boring (BH#l, <br />water samples extracted (see attached map for <br />re non -detect for all compounds analyzed [see <br />I with a hollow stem auger. Samples will be <br />Don sampler. Sampling will continue to a depth <br />The monitoring well will be constructed of two <br />to 50 feet bgs.(see monitoring well construction <br />be installed to drill through the pea gravel <br />