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The p , conductivity, and turbidity M' etm will be calibrated at a minimum It tete <br /> beginning ofeach sampling day using tommerciaRy obtained standards. COlibiation.will <br /> be chocked two to tbree times a <br /> duringthe 1 "on <br /> is driffing throughout the day. ,If instrument ddft is detected in the field, the <br /> to , <br /> gly. p e <br /> r4libration l ' d pig of weds <br /> the ne be * the e manner as during "tin. <br /> 2. Depth e measured again, prior to itseach well as de�$wjxd it, <br /> Section 4.4.1 and recorded on the Purge Chaaamizzdon.and Sample Log. The volume <br /> of groundwater in the vrcllcasing will be cala the fall <br /> d s)= <br /> 4-inch.wt1k ("off Well Depth fiarn. dic mark on the well ming (ft)'-- DTW (ft))x <br /> 0.653$ lift. <br /> �3-.E Prior to purging, the-water will.be-_cxamined-by-usinga-&4X=bl4'b2iICr th2r is cl <br /> ear- <br /> to see ftougEL Fcabx= such as immiscible noted and meaw=A <br /> ,-If immiscible layers-areabserved the well will not be purged prior to sampinig, <br /> 4_ Ilie well will then be purged using diepurge w4 _Due to the,t3zt that ffNe punq7s must <br /> purge 70 c rates range <br /> fiorn 114 to 1 gallon per minate Ilds purgeraitec does not appear to exceed the recharge <br /> rates of the weffiL Purge water will. be 4ischarged d (see Section 4.4.6)- <br /> Depth <br /> to Y during. pmtrig. se of <br /> these n2casutinnents is to monitor VrAvAkrwxL If a Jecz=se in grouadwatw el "ops is <br /> ,noted,the purge rate wil]be decreased until equilibrium 4xur rate oquals rechnge <br /> is 'fir fivquency of naeasur=cmt will be-once every e minutes initially <br /> decreasing to once equilibrium has be=reached- <br /> If ecpdlibrium be reactwd,It will be aecesmuy to page the well to drynem Purge <br /> MtH less than Vr% sof the od&al volutneof water_ in the welL Hand bailing <br /> may be requktd to med dds objeWve. Mo 15 minutes to evaluate <br /> =chuge. S �, "ott J!eet of WaW has filled the well or 1.75 <br /> hours has elapsed since dhe cmd of purgin& Collecte organics no later than two <br /> hours after pur&g. Record all actions and measuretnentS wwciaW with purging a wen, <br /> dry on tie Purge C . . n and Sample d , <br /> - 4 <br /> . 3'3 4 t 1 P.3A-7 July 14, <br />