Laserfiche WebLink
Chevron Products Company 2 <br /> Chevron Service Station#9-4275,2905 Benjamin Holt Drive,Stockton,CA Aril 26,2002- <br /> Air <br /> 002Air Sparging System <br /> The AS system includes nine AS wells (GM-1 through GM-9), underground piping, and <br /> a 1.5-hp rotary vane air compressor. The AS system alternately injects air into wells <br /> GM-1 through GM-5 and wells GM-6 through GM-9. <br /> During the reporting period, the AS system was 100% operational. The AS system <br /> operated at an average flow rate of 15.6 standard cubic feet per minute (scfm) and an <br /> average injection pressure of 9.2 pounds per square inch gauge (psig). Remedial system <br /> field data sheets are presented in attachment A. Air sparge operational data, including <br /> flow rate and applied pressure data, are presented in Table 1. <br /> Conclusions <br /> • The SVE system remains inactive pending a determination from Chevron to <br /> reactivate or modify the existing system. <br /> • The AS system continues to operate, injecting air into the groundwater, which <br /> provides oxygen for in-situ bioremediation. <br /> If you have any questions or require additional information, please contact Bob Jackson <br /> at (916) 861-0400 x 283 or Greg McIver at (916) 861-0400 x 279. <br /> Sincerely, <br /> SECOR International Incorporated <br /> —Xv. <br /> Bob W. Jackson Jr. <br /> /affest <br /> enoreoogist <br /> Attachments: Table 1 - Air Sparge System Operational Data <br /> Table 2 - Dissolved Oxygen Well Concentrations (mg/L) <br /> Figure 1 - Site Location Map <br /> Figure 2 - Site Plan <br /> Attachment A–Remedial System Field Data Sheets <br /> cc: Ms. Lori Duncan, San Joaquin Environmental Health Department <br /> Mr. Marty Hartzell, California Regional Water Quality Control Board <br /> 1:lChevron1942751Periodic Monitoring12002 O&M11 Q02 O&M Report.doc <br />