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-as little agitation as possible to reduce potential loss of volatile constituents. Major, ions, TDS, <br /> and metals analyses Cm non-preserved containers) will be cotixtai next followed <br /> by samples to <br /> be collected in preserved containers. Containers will be filled d rectlyfrbw the disposable bailer, <br /> immediately capped,and placed in a tem tnonitor�d iced chest. Caution will be used not <br /> to overfill bottles ciontaining a preservative. Tem will be monitored by pjg.a = <br /> thermometer in the chest and checUn', g to make sure that there is'sufft«cntice in the chest to <br /> makitain a temperature of approximately 4 degrees Celsius. The laboratory will measure; <br /> document,and report the temperature of the sample container upon arrival at the laboratory.. <br /> The analytical Iaboratory places a total of 2 mI of nitric acid in some of the I liter bottles to <br /> reduce the pH to below Z On an anzival basis an extra preserved bottle will be filled with <br /> groundwater and the pH measured iii the bottle. It is assumed that the pH will be-below 2. if it <br /> is not the field technician willadd nitric acid in measured amounts ung the pH as below 2. This <br /> added quantity of acid will be placed in an the preserved botdcs.d <br /> g the following monitoring <br /> rounds until it is checked again the following-year✓:Sample�p.H will-be_confirrited:ai the.: <br /> .laboratory and recorded- Deviations will be documented and reported by the <br /> laboratory. <br /> Samples:to be submitted for metals analysis-will- be ftIiered in the field_ Filtering-will be <br /> pertormed using an in line fiher mechanism which-uses the pumpingProcess-of.the-dedi <br /> Pump to draw water tbrough the 4 micronfilter. A new ffiter will be used at each well_ The new <br /> F <br /> filters "will have a minimum of and flier volume of groundwater preSSUTi7ed Hugh them to- . <br /> reduce adsorption effects. Thr actual filtered-sample.will not be collected until aininimum of <br /> two filter volumes of groundwater hag been passed through Ilia filter. For wells without: <br /> dedicated pumps,the samples are t:ansferred from the bailer,through a filter apparatus, into the <br /> appropriate sample container_ The filter apparatus consists of a pressure v=sel,a band-operated <br /> Pure pump, and a filter cartridge. Water from the bailer is phaQad in the Pressure vessel and <br /> enough air pressure(via the hand pump)is applied to force water through the filter cartridge into <br /> the sample bottles. The pressure vessel is washed in Alconox, steam cleaned, and rinsed with <br /> dr ionized water between wells.. A new filter cartridge is used at v4 wen. <br /> Samples will. be labeled with a unique ider tification number, r <br /> � sample' , project ideutific�tion <br /> number,sample location,and date and time sampled. Samples wiil be transported to the contract <br /> laboratory under strict chain-of-custody procedures._ <br /> 83849-�0112310R325 A-9 July 14,2000 <br /> 2400 Kkkfed*4lac. <br /> k <br />