ARCHIVED REPORTS_2010_12 - Laserfiche WebLink

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In the case of the non-dedicated pump, It is lowered Into the well and then activates ;- (power from "the controller box is regulated which controls the discharga rate of the ceatrifagal purge.pump). In the cm of a well with a dedicated pump, the pne fic controller box is connected to the dedicated pump (some wells have speew hi gni-rate purge pumps used only for purging.these M be identified by the fittings on the cap). A dedicated a tube (kept locked at the well head in. a protective is then attached to the discharge fittifig on the casing cap. 'The Controller is then turned on and adjusted to read the desired purge rate. :Nate: In all cases where gasoline powered generator or' comp arc used, they are to be placed at least ten feet downwind of the well being sainpled. . During g,field parameters (pK electrical conductivity, turbidity,and temp) - urill be monitored. Parameter InCaSUICAMents will be recorded on purge and Sample Logs_ In addition field observations also will be madder and recorde&on the Purge and-Sample.- Logs. Such obscrvitions includcRow ratespvolume-pu gedt color,velar,babbling orgy otµher notable observations, An example of a Purge charaeterizahgn d Sample Log is attached. S 6. Purging will:continue unfd-stable parameter readings are obtained. pH is considered stable if the readings do.not vary by greater than 0.I pH unit, Tetaperatttrc considered stable if it does not vary by more that one degree Celsius. Conductivity and turbidity we considered stable if dicy do not vary by greater than -10`x. Field parameters.will be VePe2tM at approximate five gallon intervals. A minimum of three well volumes of water - WM be removed from each well_ The final,stable,values will be recorded to be used in idleannual rcpott Sample Collection les will:be collected as soon as possible after purging is cdmplcted.. Laboratory-supplied contHhers will be used to hold the.waw sample& Samples to ba analyzed for vofiae-organic co s will be collected first Dqmdlng on.the well,samples will be collected with either dedicated Pimps or disposable baffers(a new factory wrapped bather willbe used at each well). Ia.the. case of dedicated pumps, the pump rate will be dusted sothat the sample will not be 4tated as it is collected in sample battles. When bailers are used, they will be lowered slowly into the well so not to disturb the water. The sample will be decanted into the bottles slowly with - 4U949-FOI123I0R325 A-S J,�y 14,20M C*MTWA IM du,lac,