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Work Pian for Ad <br /> dit gnat Subs ace;lnv sti atiori <br /> : Calberg Boat Works,401 North;Stockton:Street,Stockton,Califhrnla :,':'y :• , ° <br /> , <br /> , <br /> Page 3 <br /> i <br /> CVRWQCB would not concur with a•closure request. :SJCEHD requested the-submittal of a work plan <br /> .. <br /> by June 1999 to further define the horizorttal extent of the contazrzination at`the forzxier gasoline UST< <br /> PROPOSViD ADDITIONAL INVESTIGATION:, <br /> - <br /> i Static gre uzxdwater, as;measured in monitoring wells MW'1,MW-2 annd W-3 in January 1999, <br /> occurred at'approximately seven to 10 fectbeloW ground surface (bgs)^, The proposed additional:. <br /> subsurface'investigation includes the advancement of six.Geoprobest at,the-locations:s ecified on <br /> I ' <br /> Figure 1, foil samples,will be collected from each of the six Ceoprcibeg locations at five e and 10 feet <br /> {' bgs; and t o groundwater samples will be collected at approximately 10 feet b s .'AR fieldwork-will be <br /> performed'acctirding to Apex Standard Qpezrating Proi6edure'provided in Appendix A. <br /> Soil-and gi oundwater samples will be submitted,under chain-of-custod ;doeumentaticin, for=chemical <br /> analyses to'a_state-certified analytical laboratory. The samples Will be analyzed for: I) total petroleum. <br /> L, <br /> hydrocarbons, as gasoline(TPHg),by EPA Method 8015 Modified;"2)'benzene,toluene,ethylbenzene,. <br /> total xylenes (BTE )and methyl tertiary butyl ether(MTBE) by EPA Method 8620. : <br /> f { <br /> permits will be obtained fromJCEHD prior to drilling. The.Underground Service Alert" <br /> Dr llin <br /> g p.. <br /> n <br /> et <br /> w <br /> o <br /> rk <br /> will contacted prior to:drilling-to identify the location of underground.utilities at the site.and . <br /> adjacent public right-of=wa s. <br /> Y <br /> a WORK PLAN DISTRIBUTION <br /> 'Apex submitted a copy of this work.plaz;to <br /> l. Ms. Lynn Swanson - <br /> 840 El Chorro Way F <br /> .Sacramento, California 95804 <br /> ' <br /> M <br /> 2, Ms. Elizabeth Thayer 1 <br /> Ceiztral Valley Regional Water.Quality Control'Board` <br /> { <br /> :3443 Routier Road' <br /> Sacramento, California 9582'7-3015 <br /> , <br /> , <br /> BSPC:\AApex 10ONTOL61.001\W6ik;1an.doc +` <br /> « <br />