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San Juin County Sites <br /> Page <br /> sections should <br /> prepared by your consultant to dentify'�teritlal or likely contaminant <br /> - ` n pathways. EDB should be added to the suite of arra res ming tested for in <br /> t o gioun raster samples <br /> ��STPCKTO"UMAN SERVICES) <br /> 'f rarr p(an submitted to January 1998 re c��r��r,�r) ler� ratrrras�rc <br /> ti � Ionitorng as the appropriate corrective action fir t #5 <br /> rna�ndwa �rltcarin and sampling is ongoing and the C.oncer-atrati�rtr� <br /> c ntar r aft. � source area have not declined to a level that woui+d rete tl stt�> <br /> hould be p In addition, the vertical extent alb the groundwater c #arr�ir�tttr�r�t <br /> source �t been defined. reviews of the plan were to be �� <br /> year intr� �there has been no review of the plan. Your canslt �ry <br /> the rn ; . t + tarninant remaining at the site and determine if.a. tlw r�r iarl of r <br /> be <br /> psi d+r�r't ;site closure leaving the remaining mass i plate �lie jus�rri. <br /> 501A <br /> Th > t t� tltris it appears t be defined. Monitoring an+� trf tri <br /> rrc)uft[ t wart conduct ince February 1 Tec cl rrtitrir,:t <br /> even r ernailt R1. 111W.We <br /> ca fron i the r rtt me we . <br /> ars ncn nprrate ?te tion limn and the rna a c xlculatio h #1Q ft. <br /> ill Ura# impacted in the future than a closure report for the site AWlrvl <br /> . � ta13 he added to the aorta of analytes Iaent, tested for rn the <br /> .. S. <br /> AT <br /> his u .. "'t' pe arming rcutin quarterly g un ner <br /> .._, . <br /> TIt k to c.F>nfi =- the investigation of the verticalatn +aral x of tb <br /> c : .nation approve.1 ay EHD in June 2003 should be impeement.ed. A site <br /> co, t t.al mel a rcass section should be prepared ray y}Ur+ nultant to identify <br /> .-ly contaminant ig _a ;:);l pathways. EIS should be added td the suite of analytes <br /> g testedfor in the g rvrndwater samples <br /> 222 E.WESER,STOCKTON <br /> "here is a sand lana at 35 feet below grade thsg at this site that may be a migratory <br /> pathway for ft MTBE contamination.tion. It was discussed that placement of soil borings <br /> p- radient(southwest)and crass-gradient (southeast) of MW1 and obtaining soil <br /> samples and grate dater samples from 35 feet bsg may provide definition for the site. If <br /> terse samples are non detect then the site should be evaluated to see if further <br /> investigation is needed, <br /> 1:30 N.HUMMER,STOCKTON <br /> Groundwater monitoring wells were installed in July 2002 and were destroyed in <br /> ebmary 2005 because the City of Stockton purchased the site and are having a arl�in <br /> 9 <br /> arage constructed. Monitoring wells will be installed following completion of <br /> -construction activities at the site. The contamination remains urr ; fines. T Cityof <br /> Stocktory has taken over as the active responsible party for the investigation a <br /> stated in the purchase agreement. <br /> t <br />