Laserfiche WebLink
c <br /> e" 4-. <br /> Ge <br /> t Ince .. <br /> . - . <br /> tI4 may 2(yQS <br /> AGE.NC-Project,Noa 97-4340 RECOVED : , <br /> Jug b 2 2005 <br /> Ms:Vieki,mccattney <br /> Sari.loaqutinCounty EnviTonmeritaf Tealth Department ENVIRONMENT HEALTH <br /> 304 <br /> East Weber Avenue;Third Floor' . PERMT�SERVtCES <br /> Stocktom CA 35262 <br /> Sel ect . wivi Plat A�deAt m Apri120A3 <br /> PACMC, E-WKS '`L, MI <br /> 32M North West Lane,Stockton,California <br /> Dear Mi.MOIZEUCY <br /> Taaeeo ce with San`Joaquin Con y Environmchtai Health DepartmengSJC4HD)letters,dated 19 <br /> Aumust 2004 X 25 March 2005, dvcrrsced 4oEnviromnental,3nc..(AGE)bas prepared this work plan. <br /> for add tiodalsite assessment.at 3234-Noah"West Trane, Stockton, California.(site). In the above <br /> ref e&letters,.the'SJCEDD recommended advancing two cone,penetrometer:testing (CPT-) soil <br /> borings to,depths of m lei 10 feet below iurfa c gridt(bsj);the SJ�C EHD f irther'statedth <br /> CPT-Wings should b�'advaneed prior to installation-of - onal ground later monitoring wells to <br /> better chwwAcrizethc hydrogeologyand lithology;(2)ideotrfyand sample permeable zones most l ly <br /> to acco oda'te migEation of impacted.ground water toward:municipaf,water wells, and (3),betiter <br /> identify'well locations:and screening zones for,the two ground water'.-- onitoring wells'previously <br /> o <br /> dtirOSe,4SVesGE(l »et port-'dctrber,2UO3;28Janu$iy 2004prpo dby An ). <br /> ACd✓ agrees.that CPT borings generally effective , for;`preltmriary;site characterization and <br /> pteliiftinaiy,site assessttietit. avytver,at this stage`;of the investigation;AGE I>tlieves that installation <br /> ofCP-T borings wonli :gdtt►rpiin xiaJ infort lonpertineot to the completion ofthe site assessmeri,an <br /> would not be as cog effectivg as idling<.the previously proposed'ground water monitoring wells; <br /> #iermore;due to the nature and extent o�fthe known pefroleufi-impact at this site,it isnot reasonable <br /> to susliect that. t ufeum-lmp et has migrated to depths of 200,feet, and•therefore-AGE believes the <br /> CI TD.rtrqutst tv'advance CPT bgrm' to 244 feet is excessive. <br /> ween August 1393 and tktober 2443,twelve soil borings and three ground water rnoriitoring wells <br /> wire instated atthe,site;fiom:vvhich'S$seri=samples were coIlected:at depths ranging from S feet to 64 <br /> feet bsg Based on thij soil,data,,AGE was able to;bharacteriae genal lithology beneath the site,and <br /> calculated that at <br /> I2.7,gallons of dresellmo#sir orl1 QST gallons of 1VITB and 4.25 gallons <br /> of gasoline remaitud In the mil.Eurtl ermore,AGE.W.as"able'to determine that T°PH-dfTPH-mo irepacted, _ <br /> soft did nduappear to extend&yond in feet bsg,and that low.concentrations of TPI4tgMTEX/Nf"I'TJT <br /> meted coif-fid not'appear to ektend beyond 40 feet bsg:.Tram the'above data, AGE was able to ' <br /> ine:that soil at. s between 40` feet"and 60' feet"_tis 'was not impacted b : oft. cum <br /> depth g , <br /> hyd€oocarbons.`i'heref, ACBE has cfuded that the.sofl data eotnpiled to date should be adequate,for <br /> 11 <br /> asseurnerg-of petroleum hydrocarbons m sbil. <br /> .837 Shaw Road,Stockton,Catifbmia95215. <br /> Telephone(209)467-100 Fax(2O1 )467-1118 <br />