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• i 0 • <br /> 2 7 2 Sampling and Testing Equipment <br /> Prior to and after use, sampling and testing equipment will be washed in a non-phosphate (Alconox) <br /> solution, rinsed with potable water, and rinsed again with distilled water Hard-bristle bottle brushes <br /> may be used in the first two wash buckets to remove mud and debris Potable water will be obtained <br /> from on-site sources Distilled water will consist of 5-gallon containers from a commercial supplier <br /> 2 7 3 Submersible Pumps <br /> Submersible pumps necessary to properly evacuate a well will be steam cleaned and then cleaned <br /> using a three step wash First the pump intake device will be submersed into non-phosphate cleaning <br /> solution and run until the bucket is empty Second, the pump will be submersed into a bucket <br /> containing potable water and run until the bucket is empty If necessary, the second step will be <br /> repeated to sufficiently rinse the pump The third step involves rinsing the pump with distilled water <br /> 2 7 4 Personnel Decontamination <br /> Site personnel will follow the personnel decontamination procedures to be outlined in the project <br /> Health and Safety Plan <br /> 2 8 Investigation Derived Wastes <br /> This section discusses the handling and disposal of drill cuttings, monitoring well purge water, and <br /> decontamination rinsate generated during the site assessment activities <br /> Soil cuttings generated during drilling operations will be placed in a centralized location out of the way <br /> investigation activities The soil spoil pile area will be lined with visqueen and encircled with a <br /> containment berm The spoil pile will be covered with visqueen at the conclusion of each work day <br /> Following the drilling activities, the soil cuttings pile will be sampled to assess appropriate disposal <br /> methods Costs for the soil disposal will be prepared upon completion of the laboratory analysis for <br /> soil samples The soil cuttings will remain the property of AFPC <br /> _ During development and sampling of the monitoring wells, the purge water will be temporarily <br /> containerized and stored on-site in a 1000-gallon tank until analytical results are received <br /> Decontamination rinsate generated during well installation and sampling will also be collected and <br /> stored on-site until final disposal is assessed <br /> 3 0 SAMPLING METHODS AND PROCEDURES <br /> Groundwater samples will be collected from the two new wells on a quarterly basis Water levels will <br /> be measured at the five existing wells, and the two new wells Soil and groundwater samples collected <br /> during the site assessment will be submitted to a California Department of Health Services certified <br /> • analytical laboratory for TPHD analyses Soil and groundwater analytical methods, required detection <br /> limits, container types, preservation techniques and the units to which results will be reported are listed <br /> in Table 1 <br /> DAMES &MOORE 4 <br />