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i <br /> Preparation of Location <br /> — 1 Clear the area around the well of foreign materials, such as brush, rocks, debris, <br /> etc <br /> 2 Remove all casing caps from the groundwater monitoring wells. Allow the water <br /> levels to stabilize <br /> r Water Level Measurement <br /> The first sampling operation will be water level measurement An electrical interface <br /> 13 probe is be used to measure the depth toy groundwater below the datum to the nearest <br /> Cinch(0 01 foot) <br /> 1 Using the oil/water interface probe, measure the depth to water (DTW) and total <br /> depth(TD)in each well <br /> f a. Start with the least contaminated well(MW-3) <br /> b Measure the depths from the top of casing(TOC) <br /> 3 <br /> c Decontaminate the probe after each well <br /> d Record the results in Table 2 Well Measurements <br /> a The depths should be recorded to the nearest 0 01 foot <br /> Table 2 Well Measurements <br /> Well Number DTW [ft ) To [ft ) <br /> M W-1 74L <br /> �1 <br /> - _ <br /> MW-2 i6z) 'T� <br /> MW-3 �t jai . O <br /> MW-4 3 LP� yL rL� <br /> i <br /> f For MW-2,measure the free product tluckness FPT: . <br /> g Calculate the corrected depth to water using the following equation and <br /> record <br /> CDTW=DTW-(FPT*SG) <br /> where,CDTW=Corrected Depth to Water <br /> DTW=Original Depth to Water <br /> i FPT=Free Product Thickness <br /> SG=Specific Gravity(Fuel Oil=0 82—0 95) <br /> CDTW- 3-4.V,;I <br /> 1 <br /> 2 Note the condition of each well in Table 3 Well Condition <br /> i <br /> 4 <br /> i <br /> ` <br />