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`I 11., __ __ ' _. -,.y - 1 '-� ' ( y�tn, - _ .. .1:�,�� ,.! 1. 41 , ,IW ��+ Lt fly. W • <br /> = 30 July 2003 <br /> AGE-IVC Project No. 98-004 <br />.,• Eage36 of 7It <br /> 4.1. 0 AND DEPTH TO'GROUND WATER !,I <br /> Between 10-and 40 feet bsg;the soil consisted.of gray and tan brown,moist to wet silt.Blue sikwith <br /> I hite mottling was present at'35 feet bsg, at various locations. Ground watenwas encountered at-,; ' <br /> approximately 40 to.45.feet bs : Soil Boring logs are included in Appendix A.. <br /> • , - : So,l., born• s.�oQ5.4rG %Y1'p�' �K � .r h,- . <br /> 4.2; GROUND WATER ELEVATION AND FLOW DIRE TION <br /> During well development, depth to ground water at the site ranged from 25.72 feet to 26.07'feet <br /> below the monit ring wells casing tops, The ground,•water elevations at the.site ranged -from <br /> 16.79 feet to 17.1 below mean sea level(msl),in the shallow ground water wells.Ground water `; , de- <br /> ?feet' data is included on Table 1. The ground water flow direction was,calculated from the well elevation <br /> data. The ground water was inferred' to- flow northeastern edge of the site at a gradient of <br /> 0.00367 Mt. Fi ure 3 illustrates the contoured ground water elevations_ as measured•on 07,April <br /> 2003. <br /> At <br /> '• 4.3. GROUND WATER ANALYTICAL RESULTS <br /> ' TPH-g was.detected in the ground water sample collected from well MW-1 at a concentration-'of <br /> 92 microgram per liter (}Ig/l). <br /> ' MTBE.detected was in water sample MW-1 at-a-concentration of 54 pg/l. ; <br /> 1,2-DCA detected.was.in watefsample MW-1 at a concentration of-2:7 p.g/l. 3 ,- <br /> No additional petroleum hydrocarbon compounds were detected ir, the samples analyzed..Analytical <br /> results from groundwater samples-are'summarized'in Table 2. The laboratory reports (CTEL IID,'-''' CT214-0304048),quality assurance and quality control(QAIQQ reports and chain-of custody forms + <br /> are'included in Appendix•1 <br /> _ S.D:•. SUMMARY AND CONCLUSIONS , <br /> Based on the data collected from the site;AGE finds: <br /> ' Ground water occurred at approximately. et .bsg during-well development on <br /> •; • <br /> 07 April 2003. <br /> The general ground water-flow direction appears to be-northeast. <br /> Advaieeed GeoEnvironmen6i,Inc. , , <br />