Laserfiche WebLink
07 September 2005 <br /> AGE-NC Project No 97-0249 <br />' Page 4of8 <br />' MW-13 (A-D), MW-16, MW-17, MW-18 and Three B's Truck Plaza wells MW-6, MW-9 (A-E) <br /> and MW-10 (A-F) on 28 March 2005 is depicted on cross section C-C'(Figure 3), by determining <br /> the difference between ground water elevations (dh) and dividing by the difference of the screen <br />' interval midpoints (dl), the vertical gradient between adjacent screen intervals was calculated <br /> Generally, near neutral vertical gradients were observed between the First Zone, Second Zone, <br />' Rocky's Upper Zone and Secondary Aquifer Zone, pronounced downward vertical gradients were <br /> observed between Secondary Aquifer Zone and Primary Aquifer Zone (Figure 3) <br />' Ground water elevations were plotted on scaled site plans for the informal Hydrologic Unit 1 <br /> (between 10 and 35 feet, Figure 4), Hydrologic Unit 2 (between 35 and 60 feet, Figure 5), <br /> Hydrologic Unit 4(between 90 and 110 feet,Figure 6)and Hydrologic Unit 6(between 135 and 150 <br />' feet, Figure 7) <br />' 3 1 1 Hydrogeologic Unit 1 <br /> Ground water elevation data collected in Hydrogeologic Unit 1 (15 to 35 feet bsg) at the Flag City <br /> Chevron inferred a net ground water flow towards the east to southeast at a hydraulic gradient of <br /> 0 001 ft/ft or less The ground water gradient at the Three B's Truck Plaza inferred a net ground <br />' water flow direction towards the northeast at a hydraulic gradient of 0 001 ft/ft or less (Figure 4) <br />' 3 12 Hydrogeologic Unit 2 <br /> Ground water elevation data collected in Hydrogeologic Unit 2 (40 to 60 fee* Xg) inferred a net <br />' ground water flow direction at the Flag City Chevron towards the southeast ata < raulic gradient <br /> of 0 001 ft/ft or less The ground water gradient at the Three B's Truck Plaza inferred a net ground <br /> water flow direction towards the east at a hydraulic gradient of 0 001 ft/ft or less (Figure 5) <br /> 3 1 3 Hydrogeologic Unit 4 <br />' Ground water elevation data collected in Hydrogeologic Unit 4 (90 to 110 feet bsg) inferred a net <br /> ground water flow direction at the Flag City Chevron towards the east-southeast at a hydraulic <br />' gradient of 0 001 ft/ft or less The ground water gradient at the Three B's Truck Plaza inferred a net <br /> ground water flow direction towards the east-northeast at a hydraulic gradient of 0 001 ft/ft or less <br /> (Figure 6) <br /> Advanced GeoEnvironmental,Inc <br />