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Active Groundwater Sampling Standard Operating Procedure SWE-FSOP-401;Revision 1 Ahtna Southwest Environmental Operations If other sample analyses are required,fill the other sample containers after filling the VOC/or GRO sample vials. Fill each bottle to the base of the bottleneck. Care will be taken to avoid aerating the sample and not overfill bottles containing preservatives. All samples shall be appropriately preserved as described in the project plans. Each sample container to be submitted for analysis will be appropriately labeled per SWE-FSOP-002 (Field Sample Management). When there is an insufficient of grounwater(limited recharge)the samples should be collected in an order of analysis specified by the FTL in coordination with the PL to meet project objectives. Altenately, fill containers in the following order. 1. Purgeable organic carbons 10. Phenols 2. Purgeable organic halogens 11. Cyanide 3. Total organic halogens 12. Anions 4. TOC 13. Ammonia 5. Base neutrals/acid extractables 14. Preserved inorganics 6. Total petroleum hydrocarbons 15. Radionuclides 7. PCBs/pesticides 16. Non-preserved inorganics 8. Total metals 17. Bacteria. 9. Dissolved metals A clean 0.45-micron filter is attached to tubing connected to the positive-displacement pump and poured directly into the sample container to collect filtered samples. Samples collected without pumps can be poured into an unpreserved sample container and then pumped through the filter using a peristaltic pump. Hand pumps are commercially available as an alternative. Larger pore size filters can be used in series with the 0.45-micron filter to reduce suspended solids from the water. 4.8 Document Control Sampling field forms should be completed in their entirety. If an entry is not applicable, indicate "n/a" (not applicable) or line out the entry. After a task or project,all field documentation, including the field logbook,field datasheets,and electronic data, shall be scanned and placed on the server in the appropriate folder. All original documents shall be submitted to the PL and kept in the project file. See FSOP-001 (Field Documentation). 5.0 Quality Assurance/Quality Control Conduct the 3-Phases of Quality Control method described in the project work plans. The values of the water quality parameter measurements and water depths must be compared to the previous event measurements to assess the reasonableness of the new data. If a water quality parameter measurement is inconsistent with the past measurement, then an instrument check of a calibration standard for the suspect parameter should be performed. If the calibration is out of specifications, the instrument should be repaired or replaced,the suspect parameter measurement should be evaluated for Page 13 of 14