Laserfiche WebLink
, S <br /> f <br /> 1 a ! <br /> 10 January 1998 <br /> AGE-NC Project No 95-0142 <br />' Page 5 of 5 <br /> • Due to the lack of significant populations of biodegrading microorganisms and less than <br />' optimal concentrations of nitrogen, significant ,natural attenuation of the petroleum <br /> hydrocarbons through biologic activities is not likely to beoccurring <br /> 1 <br /> 5.0. - RECOMMENDATIONS <br />' Based P <br /> upon ast and resent site conditions, AGE recommends <br /> P P <br />' Continued quarterly monitoring, the next quarterly ground water monitoring should be <br /> scheduled for March 1998 <br />' 0 Collect three grab water samples at the site to determine` the'western, southern and <br /> southwestern lateral extent of the dissolved plume (see Figure 4) <br />' 9 Install an additional ground water monitoring well approximately 30 feet southeast of VW-1 <br /> or at the southern edge of the dissolved plume (see Figure 4) <br /> • Installation of soil vapor extraction and/or in-situ air sparging wells needed for preparation <br /> for active remediation at the site <br /> • Initiation of the active in-situ remediation at the site <br />' a Obtaining permission from the City of Stockton to dispose of the purge water into the <br /> sanitary sewer as the concentrations of TPH-g and BTE&X compounds detected, in the <br />' purged water may exceed `acceptable limits for discharge into the City of Stockton treatment <br /> plant Alternatively, disposal of purged ground water can also be performed by a licenced <br /> waste hauler <br />' 6.0. 'LIMITATIONS <br /> ' Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br /> analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br /> ' conditions at the site for the purpose of this investigation were made from a limited number of data <br /> points(i a monitoring wells,ground water samples) and subsurface conditions may vary away from <br /> these data points No other warranty, expressed or implied, is made as to the professional <br /> recommendations contained in this report <br /> Advanced CeoEnvironmental,Inc <br />