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In the case of the -n6a-dedicated punip, it is lowered iota the wcU and then acti <br /> vat& <br /> (power from the controller box is regulated which controls the discharge rate of the } <br /> centrlfctgal purge pump), In the rase of a well with a dedicated <br /> urn <br /> controller box is connected to the dedicated PSP' Pneuirnatic <br /> P P (same wells have special high-rate <br /> Purge Pumps used only for Purging, <br /> these can be identified by the afittittgs on the cap). A <br /> dedicated a tube (kept locked at the well head in a <br /> pm#ective -bag) is then <br /> attached to the discharge fitting on the casing cap. 'The-Controller is then tamed on and <br /> adjusted to rcach'the desired purge rate. <br /> Mote: In all cases where gasoline powered gsmerator ar compressors arc used, they are to <br /> be placed at least ten feet downwind of the well being saiuple,d. <br /> S. During purging,field parameters(pH, electrical conductivity, turbidity,and temperature) <br /> will be monitored. Parameter measurr utnts will be recorded on <br /> Purgeand Sample-Logs_ <br /> In addition field abscrvations also will be made-and recorded.on the Purge and•Sample- <br /> Logs. Such observations include•tlow rates*voluznepurge4;color,odor,btibb <br /> link <br /> Other notable observations. An exam le of a orarsy <br /> P Purge Charact+arixafi®n and Samgle Lag is <br /> Purging WM:continue until stable Parameter readings are obtained. pH isconsidered <br /> stable if the readings do.not vary by greater than Q.I pH unit. Tem is considered <br /> stable if it does not vary by more that one degree Celsius. Conductivity and turbidity are <br /> considered statute if they do not vary by greater share MY*. FieldParametims.will be <br /> repeated at apprwdxnatc five gallon intervals. A miakaurnof three well mlumes of water <br /> will be removed from each won. The f=l,stable,values win berecorded to be used <br /> in <br /> the MMUOI repoit, <br /> Sample Collection " <br /> Samples will:be collrctai assoon as possi'blc after Pmb'�8 is completed_ Laboratory-supplied <br /> co ers WM be used to hold the,water samples- Samples to be analyzed for valance•organic <br /> co s will be collected fust. on.the <br /> - wrA scrapies will be collecteci-with either <br /> dedlosted Pumps or disposable bashers(a new factory wrapind baker will be used at each;well). - <br /> la the case of dedicated pumps, the pump rate will be ad3usted so that the sample will not be <br /> agitated as it is collected in sample bottles. When bailers arc used, they Will be lowered slowly <br /> into the well so not to disturb the water. The sample will be decanted into the bottles slowly with <br /> M349-FOIX2310&W A4 July I4 2000 - <br /> ZQQQ •� E <br />