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Geofoguaf Tecknus hu Page 2 <br /> Bridges Specialty Center <br /> Report-Groundwater Monitoring <br /> Project No 377 2 <br /> November 19,1995 <br /> • <br /> 3.0 GROUNDWATER MONITORING <br /> 3.1 Hydrology of Site <br /> On December 8, 1995, the measured depth to groundwater ranged from between 8 <br /> and 8 5 feet below ground surface across the site The groundwater gradient had a <br /> slope of 0 01 ft/ft, and a bearing of north 45° west (Figure 2) This is consistent <br /> contrasts with the earlier groundwater monitoring event where the gradient sloped <br /> 0 0075 ft/ft and bearing north 34° west <br /> 3.2 Groundwater Sampling <br /> On December 8, 1995 monitoring wells MW-1, MW-2, and MW-3 were purged and <br /> groundwater samples collected Groundwater quality parameters recorded while <br /> purging the wells are tabulated below in Table 1 <br /> Groundwater sampling procedure was performed in accordance with the <br /> groundwater sampling protocols outlined in Section 3 3 <br /> Table 1 Groundwater Quality Parameters/Purge Volumes 12/08/95 <br /> Well o ume Temp Condu p op of DepthWater tOVM Measu- Wetted <br /> Purged F° chvity Casing to Level* Head- red Casing <br /> (gals) µmhos/ Water Space Total Volume <br /> Cm (ft) (ppm) Deppth (gals) <br /> (ft) <br /> MW-1 413 845 -4 32 t 0 2038 1 19 <br /> -20 624 0630 70 Milky color <br /> -20 634 0560 73 <br /> -20 632 0560 73 <br /> MW-24 13 840 -4 27 0 19 61 18 <br /> --2 0 63 3 0570 7 5 <br /> -20 619 0550 74 <br /> -20 629 0570 75 <br /> MW-3 4 08 8 24 -4 16 0 19 46 18 <br /> -20 655 1030 72 <br /> -20 644 0990 7 2 <br /> -�2 0 64 5 1020 7 2 <br /> * Elevation of monitoring well measuring point (top of well casing) is taken from Morrow Survey-ing's, Monitoring Well <br /> Exhibit Prepared for CRC Environmental Risk Management,Inc.,December,1994 <br /> t The OVM(organic vapor meter)measures volatile organic compounds in gaseous phase with ionization potentials less than <br /> 10.2 electron volts <br />