ARCHIVED REPORTS_2010_11 - Laserfiche WebLink

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'as little agitation as possible to reduce potential loss of volatile constituents. Major ions, fig, and metals analyses (In non-preserved containers) will be collected next fotlowcd by satnples.to } be collected in preserved containers. Containers will be filled directly from the disposable hailer, immediately capped,and placed in atem -monitored iced chest. Caution will be used not to overfill bottles containing a pres<xvative. Tdmperztm will be monitored by placing.a th=rnometer in the.chest and ch g to,make sura that there is'sufficient ice In the chest to makitain a tern , e of*approximately 4 degrees Celsius. The laboratory will measure, d int, 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 Iliter battles 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 bebctaw 2: lf'it is not the field technician will add nitric acid in measured amounts until the pH as below Z. This added quantity of acid will be placed in all the preserved batt es.duang the following monitoring rounds until it is checked again the fallowing-year_:Sample.pH vvilI_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:. Fnt=ing•will be \� performed using an in line filter mcchanism which.uscs the•gumping process of.the-dedicared pump to draw water throdgh the 4 micron.filter. Anew filter will be used at each well The new filters will have a minimum of one filter volur ne of groundwater pressurized through them to- reduce adsorption effects. The actual flteted.saurple.will not be collected-until a rainimmm of two falter volumes of groundwater has been. passed through tha filter. For wells without dedicated pumps, the samples arc transferred front the baro,through a filterapparatus, into the41 appropriate sample container. The filter apparatus consists of a pressure vessel, a hand.-operated Presstre pump, and a filter-cartridge: Water from the bailer Is placed in the pressure vessel and enough au pressure(via the hand pump)is applied to force water through the fil;,a cartridge into the sample bottles. The pressure vessel is washed in Alconox, steam cleaned, and rinsed'ivith deionszed water between wells.. A new filter cartridge is used at each well. Up Ales will. be Labeled with a uniquesample' identification number, project identification number.sample location,and date and time sampled. Samples will be transported to the contract - Laboratory under strict chain-of-custodyprocedures- 23-493949-FO 1123 t OR3Zs A-4 Iuly 14,200 2000 KkkrdQCr,t4C.