ARCHIVED REPORTS_2013_6 - Laserfiche WebLink

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M We agitation as possible to reducd potential loss of volatile constituents. Major, ions, TDS, - and metals analyses (in 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 temperature -monitored iced chest. Caution will be used not to overfill bottles containing a preservative. Temperature will be monitored by Placing a thermometer in the chest and checkdng to make sure that there is'suffic;imt ice in the chest to maintain a temperature of approximately 4 d Celsius. The laboratory . 3` . e� t'Y will measure; docvinent, and report the temperature of the sample container upon arrival at the laboratory., The analytical laboratory places a total of 2 ml of nitric acid in some of the I liter Crottles to reduce the pH to below 2. 4n an annual basis an extra preserved bottle will be filled with .groundwater and -the pH measured in the bottle.. It is'assumcd that the pH will be -below 2: If it is not the field technician will add nitric acid in measured amounts until the pH is below 2- This added quantity of acid will be placed in all the preserved bottics.during the following monitoring rounds until it is checked again the following -year ; Sample.pH•-wtii- be- corzfizraed: at, the.: laboratory and accorded. 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 mechanism which -uses the, pumping process -of .the- dedicated t PAF to draw water through the'4 micron filter A new filter will be used at each well_ The new fibers gill have a minimum of one filter volume of groundwater pressurized through them to- reduca adsorption effects. The actual filtered-sample.will not be collected -until a minimum of two filter volumes of groundwater hai been. passed through the filter. For welh witho ' dedicated pumps, the samples ate transferred from the bailer, through a filter apparatus, into the appropriate wimple container- The filter apparatus consists of a Pressure: Vessel, a hand --operated - Pressure Pump, and a filter -cartridge- Water frim the bailer is placed in the pressure vessel and c=ough air pressure (via the hand pump) is applied to force water through the filter cartridge into the sample bottles_ The pressure vessel is washed in Alconox, steam cleaned, and rinsed with deionized water between welts_ 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 contrast laboratory under strict chain -of -custody procedures- - 23-483849-FO1t231OR32S A-9 July 14,2044 Cop 74041000 Kkinfddere tile. �'