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-as little agitation as possible to reduce potential loss of volatile constituents. Major ions, TDS, and metals analyses {ln non-preserved containers) will be collected next followed by samples to be collected in preserved containers. Containers will be filled directly from the disposable bailer, immediately capped,and placed in a tem -monitored iced chest. Caution will be used not to overfill bottles containing a presermvc. Temperature wiU be monitored by placing a thermometer in the chest and checking to make sure that there is-sufficient ice in the chest to maftitain a temperature of approximately 4 degrees Celsius. The laboratory will measure; document, and report the temperature 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 Iit,cr bottles to reduce the pH to below Z On an annual basis an extra preserved bottle will be filled with groundwater and-the pH measured in the battle, It is"assumed that the pH wr71 be.b-cIow 2: If it is not the fiield technician will add nitric acid in Ineasuredamaurjts until the pH is below 2. This added quantity of acid will be placed in all the prt=ved botdes.dudng the following monitoring rounds until it is checked again the following-year _Samplc4H-will-be_confirmed:at:ilxe.: laboratory and recorded Deviations will be documented and reported by the laboratory- _ Samples;to be submitted for metals analysis-will. be filtered in the field.. Filtering-will be =-- performed using an in line filter mecbanism which-uses the PumPleg prOces-of the-dedicated--' pump to draw water throdgh the 4 micron'.filter A new ffiter 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.will not be collected-until a minimum of two filter volumes of groundwater has been passed through the inter. For wells waut dedicated pumps, the samples are transferred from the bailer,through a filter apparatus, luta the appropriate sample container_ The Ether apparatus consists of a pressure vessel,a hand-operated - Prcssvxc pump, and a fitter cartridge Water fmm the bafler is placed in the pressure vessel and enough air pressure(via the hand pump)is applied to force water through the fiber midge into the sample bottles_ The pressure vessel is washed in Alconox, steam cleaned, and rinsed•with deicnized water between wells_ A new filter cartridge is used at each well Samples will be labeled with a unique sample identification number, project identification number,sample location,and date and time sampled. Samples will be transported to the contract laboratory under strict chain-of-custody procedures- 23493949-FO rocedures-23-4839 49-FO 1%23 1 OR325 A-9 July 14,2004 Copyd&2000 Kkkfdda.I*,_