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1 product line locations, The wells will be constructed <br /> of two inch diameter F480 PVC screen/casing and <br /> completed as shown on Figure 3. <br /> 2. Drill cuttings will be logged continuously for <br /> „•r characterization of contamination and so- .L type by the <br /> Unified Soil Classification System. Descriptions of <br /> soils encountered and monitoring well construction <br /> details will be recorded on a boring/well log and <br /> included within the assessment report (Figure 4) . Drive <br /> soil samples will be collected above the water table at <br /> five foot intervals beginning at ten feet and below the <br /> water table at select intervals for determination of <br /> soil type. Two samples from each boring will be <br /> selected for analysis. Soil sampling will be conducted <br /> in accordance with WaterWork's Soil Sampling Protocol <br /> (Appendix II ) . Laboratory analysis of soil samples will <br /> be conducted for benzene, toluene, ethyl benzene, <br /> xylenes ( BTEX ) , and total petroleum hydrocarbons as <br /> diesel TPS by EPA method 8015/8020. Sequoia <br /> Analytical, a state certified hazardous waste <br /> laboratory, will perform the analysis. All excavated <br /> soils will be placed on plastic sheeting, covered with <br /> same and remain on site until laboratory results are <br /> received . Thereafter, a proposal fcr treatment or <br /> disposal of the excavated material will be prepared. <br /> 3. The wellheads will be surveyed to a common datum and <br /> groundwater levels will be monitored to determine the <br /> site specific groundwater gradient . Free product <br /> thickness, if any, will be monitored using an interface <br /> probe. The monitoring will be conducted in accordance <br /> with WaterWork' s Groundwater Monitoring Protocol <br /> (Appendix II) . <br /> 4. Subsequent to installation, water samples will be <br /> collected from the monitoring wells after purging a <br /> minimum of four well volumes (casing and sand pack) . <br /> Wells will be pumped until water pS, electrical <br /> conductivity and temperature have stabilized. The <br /> purged water will remain on site, in secured 55 gallon <br /> drums (DOT 17-E) until laboratory results are received. <br /> A proposal for the treatment or disposal of the water <br /> produced during well development and sampling will then <br /> be prepared. Collection and preservation of all water <br /> samples will be in accordance with EPA protocol . <br /> Specific sampling procedures are outlined in WaterWork's <br /> Groundwater Sampling Protocol (Appendix II ) . The water <br /> samples will be analyzed by Sequoia Analytical for BTEX, <br /> and TPH as diesel by approved EPA methods 8015/8020. <br /> 5. All site activities involving potential contact with <br /> hazardous materials (i.e. gasoline contaminated soils) <br /> will be conducted in accordance with WaterWork' s Site <br /> Health and Safety Plan (Appendix III ) . <br /> 3 <br /> a <br />