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DRAFT REVISED MONITORING AND REPORTING PROGRAM N0, RA12-fWCEIVED <br /> GLENN SPRINGS HOLDING COMPANY,F <br /> ORMER OCCIDENTAL CHEMICAL <br /> GROUNDWATER REMEDIATION PROJECT, LATHROP FACILITY <br /> SAN JOAQUIN COUNTY DFC 2 7 20113 <br /> ENVIRONMENTAL <br /> GROUNDWATER EXTRACTION AND INJECTION SYSTEM "TORNWENT <br /> Treated groundwater by the treatment system is discharged beneath the Site in wells <br /> located both above and below the Corcoran clay layer that lies under the Site. Below <br /> the Corcoran Clay layer, flow distribution of the treated groundwater is not controlled by <br /> any means other than the natural receptivity of the injection wells and hydrogeologic <br /> characteristics of the confined aquifer. Flow distribution above the Corcoran clay is <br /> controlled by the hydrogeologic characteristics of the aquifer above the Corcoran clay <br /> layer and the extraction wells that are operated in the vicinity of the injection wells. The <br /> injection system operation must comply with the WDRs,Essbed for the Site. <br /> All extraction wells must be monitored according toAP bles 2 and 3 (Table 3 is included <br /> as Attachment D). Table 2 lists the sampling con s�ltuentnalytical methods, and the <br /> maximum practical quantitation limits. Table 3 listshe wells ample analytes, and <br /> sampling frequency. Sample collection and n'a ysis shall followstandard EPA protocol <br /> GROUNDWATER MONITORING <br /> Groundwater monitoring shall be conducted ace'drd,ingr-ol, <br /> able 2 andTble 3 <br /> (Attachment D). Table.2 lists thea piing constit�.etsanalytical methods and the <br /> maximum practical quantitation lits (P-M._s). Table tttachment D) lists the <br /> compliance wells and their manitonng fre •ae:nc . Samp,10*collection and analysis shall <br /> `�.. <br /> follow standard EPA protocol. if nec�ssary, divalent ar�alrtical methods may be used <br /> with Central Valley W.aie Board staff co current-; <br /> FIELD SAIVIP.LING <br /> In addition to the above,sampli:g a . ,analy� field sampling and analysis shall be <br /> '", t well is sampled. The <br /> conducteCd'-eC--_,1 <br /> a c ' e m�T1'ito�mg well or extraction w psampling and nalyses o field ammeters ;hall be as specified in Table 4 as follows: <br /> Tabl FIEE LDSAMPLNG REQUIREMENTS <br /> Parameters Units <br /> - �oundwater EI_vation Feet, Mean Sea Level <br /> El`"cal Cond it mhos <br /> Diss'A 0,.Ox - �en m IL <br /> H H Units to 0.1 units <br /> Temper 0C <br /> Extraction Rate GPM <br /> Pure Rate GPM <br /> Injection rate GPM <br /> Turbidity NTU <br /> Total Gallons Purged Gallons <br /> Water Level ft MSL <br /> This applies only to extraction wells. <br /> 2. This applies only to monitoring wells. <br />