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s:a <br /> PROsLEM ASSESSMENT REPORT <br /> Moore Petroleum, Inc. <br /> 5941 F Street, Banta, CA <br /> NOA Project No. 10.90-481 <br /> Page 7 <br /> sediments at the site was reported in Delta's Preliminary <br /> Hydrog_eologic Assessment Report as 5.18 feet/day. This hydraulic <br /> conductivity value was determined by performing slug tests in <br /> monitoring wells NW-1, NW-2, and NW-3. The average ground water <br /> velocity at the site can be estimated from the following equation: <br /> V = K2 <br /> n <br /> - Where V = Average linear velocity <br /> K = Hydraulic conductivity <br /> - I = Hydraulic gradient <br /> n = porosity <br /> at the site: V = (5.18 feet/day) (.003 foot/foot) <br /> 0.25 <br /> V = .062 feet/day = 22.7 feet/year <br /> NOTES: <br /> n is estimated <br /> K is averaged <br /> The average linear velocity may change periodically due to changes <br /> in the hydraulic gradient caused by seasonal ground water level <br /> fluctuations. <br /> TABLE ; <br /> Ground Water Elevation Data <br /> Depth to Reference Ground Water <br /> Ground Water Elevation Elevation <br /> Well I.D. Date (feet) (msl) (msll - <br /> NW-1 7/06/90 11.38 26.18 14.80 <br /> 8/27/90 10.53 15.65 <br /> NW-2 7/06/90 11.52 26.39 14.87 <br /> 8/27/90 10.75 15.64 <br /> NW-3 7/06/90 10.87 25.56 14.69 <br /> 8/27/90 10.13 15.43 <br /> NW-4 7/06/90 11.18 25.97 14.79 <br />----- --- -- ---..----- <br /> 8/27/9A. ----10-.4 2.- ----------- ---- - ----- 15..55--- <br /> NW-5 7/06/90 11.01 25.78 14.77 <br /> 8/27/90 10.23 15.55 <br /> NW-6 7/06/90 10.58 25.63 15.05 <br /> - 8/27/90 9.80 15.83 <br />