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;•'T '-ti .. n ,. I .'.ryu.F y. � i i fq. e'; , - i - l I.y. ,,,, �. 'r•. <br /> r� i , � r , nl , ,, _ � �, • c g a, to ', '�r -r•' <br /> r '` {' i; ` ., i it s , � ;:� ,r• <br /> ,, i4 vJ` y{ f <br /> i Quarterly .Monitoring,Report hDeeember.2003 ry �Ir <br /> ''FAST AND EASY,MART ,,. <br /> v j <br /> 244W6t Harding W�y,^ tock ton; <br /> .0'.,-, INTRODUCTION` <br /> ' <br /> At the request'ofMr. Mike-Ali the.prop erty,owner;.Advanced'GeoEnvironmental, Inc. {AGE) has , <br /> ,. <br /> prepared the enclosed Quarterly Monitoring Report for the property located at 244'West Harding } ; <br /> Way,.Stockton,'California. The scope.of'work.included'groun , water monitoring:and sampling;: <br /> laboratory sample analysis and the preparation of this report:The location of the site is'illustrated ! <br /> on-Figure 1'and a plan of the site is-illustrated on Figur_e 2: ' <br /> Jhi'•report has been prepared'in accordance with guidelines established byh•t. �_Qentral Valley <br /> Regional Water Quality Control Board'(CVRWQCB) for .tlie subsurface ;investigation of <br /> underground storage tank.(UST)sites.Ground-water sampling procedures for the site;were outlined <br /> in Monitoring Welllnstdllation Work Plan,dated'06 February 2003, prepared by AGE and approved <br /> by the EHD in a1etter: <br /> ' .2:0. BACKGROUND <br /> A gasoline station and mini-mart presently occupy the site. Two USTs were removed from the site..' <br /> '' • in September 1998 by Stockton Service Station Equipment(SSSE).Anew UST system was installed <br /> afthe site in December 1998. <br /> 2:1. SITE DESCRIPTION t„• <br /> ' The site is bounded on the north by Harding Way.Residential property lies south and west'of the <br /> site;commercialproperty lles east of the site.A single structure occupies the'southe.m portion ofthe ' a <br /> site. .' <br /> 2.2: 'PREVIOUS INVESTIGATIONS <br /> ' <br /> if is AGE's.understanding that an environmental site assessment was performed on the property.,in' <br /> the early 1996.Field observations indicated that hydrocarbons may have impactedthe's'd. One soil <br /> sample collected from fortyfeet•below surface grade(bsg),'had detectible concentration of petroleum <br /> hydrocarbons. Two ground water-samples had low concentrations of volatile aromatic compounds: : , <br /> One of the ground water samples collected and`analyzed contained total petroleum hydrocarbons as <br /> gasoline at a concentration of 4:28 inilligram.per liter(mg/l).Methyl tertiarybutylether(MTBE)was r <br /> 1. <br /> detected at 3.7 microgram per liter'(µg/'1). ” <br /> 1 i 7 5 <br />