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In the case of the n6n-dedicued , it is lowered Into thewell WA then acllvat& <br /> (power from IIS box is regulated which controls thc disckne rate of the <br /> cenUifugal purge p). In the case of a weft with a 4C& <br /> Ojed pump, thepneumatic <br /> controller box is eonnect4d to the ded1wedpump (some Wells have special hi rate <br /> purge pumps used only for purging,dme can be idwtiflod by the fittiasson the cap} .A, <br /> dedicated e t well head ina fWtective . is then <br /> attathed to the dischnc fittiftg on the casing cap. 7he-Controller is then iumedon and <br /> adjusted to reach the desired purge rAtc. <br /> Note, in all cases where gasoline powered generator xrt 'rsused,theare <br /> y an to <br /> be placed at least tent,feet downwind of well being sampled. <br /> 5, During purging,field parameters (pK electrical coaductNity,turbidity,and teen j <br /> v ill be monitored- Parameter weammmcnts will herd a ple Logs. <br /> In addition Held obs=vadons also.will be ma&and mvor&&on a and'S le- <br /> Logs. Stich o Mor dura purgD cotox;odor,bubblink or-any- <br /> Other <br /> notable cabs "camas- An example of a Purge Chamtedzation and Sample Log is <br /> attwhed <br /> 6. Purging, will Con'" e patameter readings arc ob _ FH is comidered <br /> stable if thz readings do,not v=y by gmater than 0.1OH uniL T= is <br /> - consid=d <br /> imble if it by more one degree+ C s. Conductivity and turbidity arr <br /> cormidere stable if they do not vary by greater d= Mo. Field araM be <br /> repeated as tc fivc gallon Intervals. A minimum of es of <br /> removedwM be - The final.stable, val 'll bac recorded to be - in <br /> 6e amnw report <br /> sample Collection <br /> Samplw Will,be collected as xt 03 Possible After purging is completed. Lab rylied <br /> cantiinm wM be used to hold die wakr samples. <br /> , Samples y for volwgr organic <br /> 4onsduiews ll n pees will be colleithar <br /> dedicated pumps or dVo=Wc bailers(a new fxtory w er Will be used at each well). <br /> la,the e of dedicacd pumps, the punp roe will be 4usted so that the plc win not be <br /> 4tated as it is collected in szmpte botfles. to slowly <br /> WO e weff so not to disunt the water. The <br /> �sampIc will be deeanted into Ow bottles slowly with <br /> 23-M$494VI%2310RM A4 July 14,2000 <br /> C"YfktK IM ger,t <br />