Laserfiche WebLink
i <br /> Steve and Genes Service <br /> 2315 El Dorado,Stockton <br /> Page 2 <br /> I <br /> groundwater elevation, flow direction, or some other factors? <br /> EHD agrees with GTI's proposal for additional groundwater wells to the north and <br /> northeast of the site,and notes that additional wells may be required to fully delineate and <br /> monitor impacted groundwater. The well,toward the east should be located in the most <br /> common down-gradient position as indicated by historical groundwater flow directions. <br /> Installation of additional sample collection points such as monitoring wells,borings,or <br /> direct push points in directions other than north and northeast should also be considered at <br /> this time to maximize cost-effectiveness. <br /> �i, is u ill not <br /> uarterl monitorin even <br /> _ 2001 thatfuture g <br /> GTI stated in the above referenced 4 QMK f quarterly <br /> include analysis by EPA method 8260. In a meeting on April 17,2001, Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) agreed with EHD to discontinue analysis of <br /> oxygenated fuel compounds by EPA Method 8260 as stated in the report,with the condition <br /> that the 8260 test be performed once a year,i.e. the first quarterly sampling event of the year. <br /> However,please be aware that any recommendation to discontinue analyses for any <br /> chemicals of concern, substitution of testing methods,or modification of quarterly <br /> monitoring schedules, etc.,requires review and approval by EHD. Please recommend <br /> changes to the monitoring program as seems appropriate,but EHD requests that such <br /> unilateral statements be omitted from future reports or letters. <br /> If you have any questions,please contact Jeffrey Wong at (209) 468-0335. <br /> Donna Heran,REHS,Director <br /> Environmental Health Division <br /> Jeffrey Wong,REHS Nuel C. Henderson,Jr.,RG <br /> LOP/Site Mitigation Unit IV LOP/ Site Mitigation Unit IV <br /> Cc: CRWQCB, Central Valley Region=Marty Hartzell <br /> Cc: Geological Technics, Inc. -Raynold I.Kablanow <br /> i <br />