Laserfiche WebLink
1 <br /> 05 March 2004 <br /> AGE-NC Project No 99-0559 <br />' Page 6 of 11 <br />' water elevation decreased approximately 4 feet over the last quarter The top of the ground water <br /> table was within the screened intervals of the wells <br /> At the time of the September 2003 monitoring event, the potentiometnc surface based on HU1 and <br />' HU2 wells inferred that a southern flowing ground water flow direction the former UST area(well <br /> MW-7A) with hydraulic gradient of 0 0149 feet/feet (Figure 8) <br />' HU3 and HU4 <br />' In the wells representing HU3 and HU4, the depth to ground water ranged from 62 08 to 62 85 feet <br /> below casing grade Ground water elevation data collected from monitoring wells MW-5B through <br /> MW-8B ranged between 36 88 feet(MW-8B) and 37 55 feet(MW-5B)below MSL Ground water <br />' elevation from wells in this hydrologic units decreased 4 4 feet over the last quarter Based on the <br /> monitoring wells screened in HU3 and HU4,ground water was inferred to be flowing primarily west <br />' toward the site from well MW-8 and west away from the former UST with a hydraulic gradient of <br /> 0 004 ft/ft (Figure 9) <br /> HU5 <br /> I Within the upper portion of HU5 (Upper HU5), screened between 125 and 135 feet bsg, ground <br /> water elevation data collected from monitoring wells MW-5C through MW-7C ranged between <br /> 37 04 feet(MW-8C)and 37 78 feet(MW-7C)below MSL Ground water elevation from wells in this <br />' hydrologic units decreased 4 3 feet over the last quarter Ground water at the former UST release <br /> was inferred to be flowing toward the west-northwest away from the former UST area with a <br /> hydraulic gradient of 0 006 ft/ft (Figure 10) <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-8D ranged between <br />' 37 45 feet (MW-8D) and 37 93 feet (MW-7D) below MSL Ground water elevation from wells in <br /> this hydrologic units decreased 4 feet over the last quarter Ground water was determined to be <br /> flowing toward the north-northwest at a hydraulic gradient of 0 005 ft/ft (Figure 11) <br /> HU6 <br /> Ground water elevation data collected from monitoring wells MW-5E through MW-8E ranged <br /> I between 37 40 feet (MW-8E) and 38 88 feet (MW-7E) below MSL Ground water elevation from <br /> wells in this hydrologic units decreased 4 3 feet over the last quarter Ground water was inferred to <br /> be flowing toward the northwest with a hydraulic gradient of 0 011 fl/ft (Figure 12) <br /> Advanced GcoEnVLron mental,Inc <br />