ARCHIVED REPORTS_2006_6 - Laserfiche WebLink

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'as little agitation as possible to reduce potential loss of volatile constituents, Major ions, TDS, and metals analyses Cm non-preserved containers) will be collected be collected in preserved containernext followed by samples to s. Containers will be filled directly from the disposable bailer, immediately capped,and placed in a temp -monitotrd iced chest. Caution will be used not to overfill bottles containing a preservative. Temperature will be monitored by placing a flMmometer in the chest and checlqng to make sure that there is'sufficiccnt ice in the chest to a tem c of'approximately . 4 degrees Celsius. The laboratory will nacasitare; document 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 bottles to reduce the pH to below 2 On an annual basis an extra preserved bottle will be filled with groundwater-and-the pH measured in the bottle.- It is"assumed 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 bottlesAuring the following monitoring rounds until it is checked again the foffowing-yrar_--Sample..pH•-will. be.confirmed:at.the•.: 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 ;fiber mechanism which uses the-pumpingProcess-of_the-dedic aced pump to draw water through the 4 micron filter- A new filter will be used at each well. The new, filters will have a minimum of one filter volume of groundwater pressmized through them to reduce adsorption effects. The actual filtered-sample-will not be col ected-untH aminimurn of two filter volumes ofground has been passed through the filter. For wells without dedicated Pumps, the samples arc transferred from the bailer,through a.filter apparatus, into the appropriate sample container. The filter apparatus consists of a a pie Pr=urc PSP= and a filter cartridge- Water from the bailer is placed in the pressure vessel and enough air pressure(via the hand )is applied to force water through the filr_,er cartridge into the sample bottles_ Thep vessel is washed in Alconox, steam cleaned, and rinsed'with deicnized water between wells_ A new filter cartridge is used at each well_ ple$ 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 labostory under strict chain-of-custodyprocedures- 23-483$4 9-F01%2310RM A-9 July 14,2Q40 2000 AfGi(ilc fila.tv_