Laserfiche WebLink
1 <br /> t 5.0 CONCLUSIONS AND RECOMMENDATIONS <br /> 5.1 Groundwater Flow Direction <br /> A consistent northwest groundwater flow direction has been established at the site since <br /> ' November of 1993 Based on this data, we recommend monitoring on a quarterly basis at <br /> the site The requirement for monthly groundwater depth measurements should be <br /> eliminated from the monitoring program <br /> ' 5.2 Petroleum Hydrocarbon Impacted Groundwater <br /> ' Petroleum hydrocarbons detected in MW-2 during the March sampling event are similar to <br /> concentrations detected in November 1993 However,petroleum hydrocarbon concentrations <br /> have decreased in MW-1 during the same period No petroleum hydrocarbons were detected <br /> ' in MW-3 during the March sampling event <br /> The down gradient extent of impacted groundwater has not been determined Additional <br /> ' monitoring wells will be required to delineate the hydrocarbon plume We recommend the <br /> preparation of work plan for the installation of two additional monitoring wells to determine <br /> ' the down gradient extent of impacted groundwater The next quarterly sampling event is <br /> scheduled for June 1994 <br /> 5.3 Rinseate Water and Stockpiled Sol[ <br /> Upon approval from the City of Stockton, the water in drum D-1 should be discharged into <br /> ' the sanitary sewer However, the water in drums D-2 and D-3 should be transported and <br /> disposed of at a licensed facility <br /> 11 I I` <br /> 'I <br /> ' 6.0 LIMITATIONS <br /> ' Our professional services were performed using that degree of care and skill ord'inanly <br /> exercised by environmental consultants practicing in this or similar localities The findings <br /> were based upon analytical results provided by an independent laboratory Evaluations of <br /> ' the geologic/hydrogeologic conditions at the site for the purpose of this investigation are <br /> made from a Iimited number of available data points, and subsurface conditions may vary <br /> away from these data points No other warranty is made <br /> 11 <br /> I <br /> r <br /> II I I 11 1 ' I 11 <br /> ' II <br /> E II II III f I I III <br /> aeoI-F-1,ode s«�ray <br /> t rOb.dy Serves Solna QR213 9V tee 4 I I I I I I I S 1 <br /> it • I'i I �I I I I <br /> I I <br /> I I I I I l I <br /> ` <br /> I I <br /> I I I <br /> II FrJ III III —III I11! I III itI I I l rll I ill! [ ill II II I'llI I !I IIlIII I III 'II I � IIII 4111 I lIl dI ' 1011, ' 1�1f i III I ! I <br />