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as little agitation aspossible: to rrcluce potential loss of volatile constituents. Mayor ions, 8 - and metals analyses (in non-preserved containers) will be collected next followed by samples to be collected in presezved containers. Containers will be flied dhecdy from sable bailer, - ediately capped,and placed in a temperature-monitored iced chest. Caudon Will be used not to overfill bottles containing a rive. Tem ' be monitored byglampl $ 8• ometer in the chest and cfiecl4ng to a'sure that there is dent ice in the chest to maintain a c of ly 4 dqp= Celsius. 7he Tato " Willdoctimmsurei eat, and report the tcerature of the sample container upon arrival at the Laboratory. The analytical Iaboratory places a total of 2 ml of nitric acid in some of the I liter bottles to reduce the pH to below 2 On an annual basis an extra preserved bottle well be fiilyd with groundwater and-the pHineasured in the bottle, It is'assumed dw the pH will be•below 2: if it is not the field technician,willadd nitric acid in iacasured amounts until the pH is below 2 This added quantity of acid will be Pi in all the ed bottics.d P the followingmonitoring rounds until it is checked again the: following-year:Sample4H•-will•be-confirmed:at_•thhc.: laboratiory and recorded. Deviations will be documented and reported by the laboratory. Samples:-to be submitted for metals analysis-will.be filter-cd in the .field_ FRtering- will be performed using an in line, flier inechanism which uses the ' gp -of_the-dedicated pump to draw water through the 4 micran'fi1taF A new filter will be used at each well. The new filters will have a minimum of one filter volume of groundwater Pressurized through them to- reduce adsorption effects. The actual filtered-sample.wfll not be coltected•until a mininiturnof two filter volumes of groundwater hras been. passed dwOugh the. filter. For without dedicated pumps, the samples are: transf from the bailer,through a filter VParatus. into the - appropriate sample co < The fUter apparatus consists of Pressure Vessel,a -o pressure ptimp, and a filtercartridge- Water frqm the bailer is placed in the pressure vessel and enough air pressure(via the hand )is applied to force water through the filter cartridge into the sample bottles. The p vessel is washed in Alconox, steam cleaned, and 'with deianized.water between wells_ A new filter cutridge is used at each well pies Will. be Wnled with a unique ple identification ber, project identification number,sample location,and dak and time sampled. Samples will be transported to the contract laboratory under strict chain-of-custody ures.. 83849-F'o V23 2 4Rm A-9 July 14,2 40 2000 KkkJAider°ts'C.