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QUARTERLY REPORT - { September 1996..' '. .Y s 4 -Ge weke'Land Development& Marketing _ -16 South Cherokee Lane ' Lodi;California , INTRODUCTION=AND-SCOPEx0F WORTti- _ " At-the 'request of Geweke=Land.Development` & Marketing '(.GLDM);.and 'iii•accordance•with-' . Cleanup and Abatement Order No. 93-701,Advanced GeoEnvironmentaI,Ilnc',"(AGE) hasprepared :! this'report of monitoring and.reinediation-"f eld'activities"performed at 16 South'Cherokee'Lane, Lodi; California during the-'third.quarter of I996. The site:and its surroundings-are;illustrated on I} Figure I Vicinity Map Structures and well locations are'shown on Figure2 - Site.Pian. 1.ri accordance-with the.Revised-'Monitoring and Rip orting'Program No. 94=701,.ground-water and', soil gas monitoring are.scheduled-on•a periodic basis•fo,assess,microbiological activities: Revisions the monitoring plan have,been,proposed and are currently being discussed with the,CVRWQCB F The scope of work,covered by'this-report was to evaluate the,field data acid summarize the progress of the in-situ-bioremediation project sect and to docuinent.monitoril gactivities at the site during the third"'' quarter of.1996: Results of previous investigation, an'd monitoring-at the site are detailed in.the Problem Assessnieht Report,(PAR) and'prior Quarterly Reports. 2.0. PROCEDURES ;. 2.1., MONITORING OF MICROBIOLOGICAL ACTIVITY IN GROUND WATER t, Groundwater'samples were collected from IVI W-5, ]VIVV 7; IVIW 1-0; MW-11;MW-13, MW-14„and EW=1 on .17.July`T.996; ground water samples were,collected, from"�IvIW=9 and MW44 on 17 " - '- S*e' mber.1996. ,The Monitoring and Reporting Program No.`94-701 is currently being revised.with 1 .the CVRWQCB: r . ' All sarriples were collected using-disposable;plastic bailer's or pre-cleaned PVC bailers and were r. monitored in the'f eld for dissolved,okygen;:pH, and electrical conductivity (EC):-Following the ' f ” procedures:described iri Section 2.3:; samples for microbiological evaluation were collected in 407m1• = `u ; VOA vials with no added preservative;and were'transported to A: Keith-Kaufman; M.S'., in-Culver' • - City, California. The'samples-were analyzed for;physicochemical properties and�rhicrobiol-'ogical ;. enumeration:.Table land Table 2 summarize tlie,results of'these=analyses through.Septenibe'r, 1996 2.2:' `MONITORING'QF GROUND WATER FOR PETROLEUM�HYDROCARBONS-. On a'`more frequent;monitoring schedule requirement;,wells-�MW=14 and EW-I were sampled, but.