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y r. <br /> 9 r <br /> 1 <br /> air space, and screw-cap sealed. All full vials will be inverted <br /> to look for air bubbles, and sampled again if air bubbles are <br /> observed in the vial. Samples will be kept under ice at all times <br /> after their collection. <br /> 4. Water sample blanks will be placed in clean 40 ml. Teflon, <br /> screw-cap, VOA bottles designated for that purpose. One water <br /> sample blank will be taken for each set of water samples collected <br /> from each boring. The water sample blank will be taken from the <br /> bailer prior to the collection of the water sample from that well. <br /> 5. The wells will be purged of 4-5 well volumes of stale water <br /> prior to the collection of the water sample. The wells will be <br /> Purged with a clean teflon bailer. The purged water will be <br /> collected in 55-gallon drums, labeled, and stored on-site no longer <br /> than 30 days pending analytical results. Upon receipt of <br /> analytical results the waters will be properly disposed of either <br /> by emptying them out on site (if not contaminated) or by <br /> manifesting them to a certified disposal facility. <br /> t <br /> 6. After submission of this report, the wells will be sampled <br /> monthly for three consecutive months and quarterly after that time. <br /> Dependent on the results of the Phase 1 sail and groundwater <br /> investigation and a formulation of a remedial actionl ` <br /> re <br /> frequent sampling may be required. The scheduling of this phaseoof l <br /> y sampling will be refined and budgeted upon completion of this Phase <br /> I soil and groundwater contamination assessment. <br /> SAMPLE RECORDS AND CHAIN OF CUSTODY <br /> 1. Sample records for each sample will contain information on <br /> sample type and source, job number, sampling date, location, <br /> significant conditions that may impact the sampling, laboratory <br /> name, sampling method and analysis requested. <br /> 2. A chain of positive, signature custody (Figure 5) and <br /> transferance will be strictly maintained at all times. <br /> 3. A hard copy of the laboratory sample results and the completed <br /> chain of custody will be provided with the technical report. <br /> 4. Water levels will be measured and recorded to the nearest o.01 <br /> foot by an optical probe or other device which has shown to be of <br /> equivalent accuracy. These measurements will be taken before each <br /> sampling event and recorded on the water sampling log (Figure 8) . <br /> 5. The elevation of each well will be surveyed vertically -to an <br /> average mean sea level (AMSL) and horizontally to a <br /> - - y permanent bench <br /> i <br /> mark. <br /> . <br /> 275 Grantline Rd. DSSP Page 5 of 6 <br />