Laserfiche WebLink
I <br /> I • 21 December 2002 <br /> AGE-NC Project No 99-0559 <br /> Page 5 of 8 <br /> (Figure 5) The ground water elevation level in monitoring MW-8C was anomalously out of the <br /> range of the other water levels of multi-level well MW-8 by approximately 8 feet, therefore this <br /> value was not used to contour the HUSU ground water elevation map <br /> Within the lower portion of HU5 (Lower HU5), screened between 148 and 160 feet bsg, ground <br /> water elevation data collected from monitoring wells MW-5D,MW-7D and MW-813 ranged between <br /> 36 80 feet (MW-8D) and 38 48 feet (MW-7D) below MSL, ground water was determined to be <br /> flowing toward the northwest with a hydraulic gradient of 0 014 ft/ft (Figure 6) <br /> HU6 <br /> Ground water elevation data collected from monitoring wells MW-5E through MW-8E ranged <br /> between 37 97 feet (MW-5E) and 39 16 feet (MW-7E) below MSL, ground water was inferred to <br /> be flowing toward the northwest with a hydraulic gradient of 0 017 ft/ft (Figure 7) <br /> 1 <br /> . 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLE ANALYSIS <br /> I <br /> Twenty-four ground water samples were analyzed by CTEL for the chemical constituents referenced <br /> in Section 2 2 The following is a summary of the analytical results for each hydrologic unit <br /> HU 1 and HU2 <br /> During the quarter, free-product was recovered in wells MW-2 and MW-3 <br /> TPH-g was detected at concentrations ranging between 13,000 micrograms per liter(µg11)in sample <br /> MW-5A and 770,000 µg/1 in sample MW-3 Benzene was detected at concentrations ranging <br /> between 15 µg/l(MW-5A)and 93,000µg/l(MW-8A),the remaining BTEX compounds ranged from <br /> 4 0 µg11 toluene (MW-SA) to 191,000 µg/1 total xylenes (MW-3) MTBE was detected at a <br /> maximum concentration of 260,000 pg/1(MW-4),TAME was detected at a maximum concentration <br /> of 170 µg/l (MW-6A) and 1,2-DCA was detected for the first time in sample MW-4 at 25 µg/1 <br /> HU3 and HU4 <br /> TPH-g was detected at concentrations ranging between 150µg/1(MW-8B)and 3,900 gg/l(MW-6B) <br /> 10 <br /> Benzene was detected at concentrations ranging between 5 0 µg/1(MW-6B)to 400 µg/1(MW-6B), <br /> the remaining BTEX compounds ranged from 2 0 µg/1 ethylbenzene (MW-6B) to 560 µg11 toluene <br /> Advanced CeoEnvironmental,Inc <br /> I <br />