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1 , <br /> 1 r <br /> L <br /> f S ' <br />,. 01 May 2000 <br /> AGE-NC Project No 96-0232 <br /> Page 3 of 11 <br /> ,1 <br /> Ioperation No measurable draw-down was observed from wells MW-2, MW-4 or MW-6A during , t <br /> the second stage of the pump test A transmnssnvnty value from well MW-1 was calculated at 349 <br /> gal/day-ft - - - <br /> Pnor to pumping activities for the third stage of the pump test, a baseline static ground water level <br /> fiom MW-1 was recorded at 6 50 feet bsg During the third stage of the pump test (pump rate at 3 <br /> GPM),the greatest ground water draw-down was observed at 4 42 feet after 125 minutes of pumping <br />" operation, due to an equipment malfunction, the test was terminated after 125 minutes of operation ; <br /> No measurable draw-down was observed from wells MW-2, MW-4 or MW-6A during,the third - <br /> stage of the pump test A transmnssivnty value from well MW-1 was calculated at 932 gal/day-ft <br /> Calculations for tiansmissivlty are Included with Appendix C <br /> 2 3 PURGED GROUND WATER DISPOSAL <br /> Approximately 1,350 gallons of purged water were generated during operation of the step draw- <br /> down pump test On 15 March 2000, the pump test pui ged v�ater was pumped fi om the abovep ound <br /> storage Baker tank and into a vacuum truck (supplied by ABCO Environmental), the pump test <br /> purged water was transported off-site under non-hazardous waste manifest to hivizotech, a waste <br /> treatment facility located In Roseville, California Documentation and uniform hazardous waste <br /> manifest fon disposal of the pump test purged water is contained In Appendix D <br /> 30 SOIL-GAS SURVEY <br /> , <br /> On 14 Mal ch, 2000, seven soil probe borings (P-6, P-7, P-8,,P-9, P-10,, P-11' and P-12) were M <br /> advanced at the'slte as part of a soil-gas survey to evaluate soil-gas organic vapor concentrations in <br /> the vadose zone near the existing UST system and near the fuel dispensing areas <br /> r <br /> 31 DRILLINIGiACTIVITIES <br /> i <br /> Soil probe,bonngs P-6, P-7, Y-8, P-9, P-10, P-11 and P-12 were advanced vertically to depths of 5- <br /> feet bsg utilizing dnect push technology and a van-mounted Geoprobe 5400 unit equipped with <br /> 1 125-Inch dnametel probe rods and an attached 2 15-inch dlametei soil sampler (See Figure 2) All , <br /> soil piobe boiings were backfilled over then enure depth with a portland clement gzout mix <br /> i <br /> Adtiauced C#oF_m ironmc iA11 Inc <br />