Laserfiche WebLink
' Ms. Amy Terrell <br /> 31 October 2008 <br /> ' Page 8 <br /> increase was at monitoring well MW-7 from a baseline concentration of 0.04 mg/L to an <br /> August 2008 concentration of 11.9 mg/L. Offsite downgradient well MW-5 had an <br /> ' increase from 0.014 to 3.96 mg/L. Only a slight increase was observed in upgradient well <br /> MW-4 from ND<0.007 mg/L during the baseline event to 0.014 mg/L during this event. <br /> • Metabolic acids were detected for the first time. <br /> o Acetic Acid was detected at a concentration of 4.8 mg/L in intergrid monitoring <br /> ' well MW-6R during the August 2008 event indicating potential microbial activity. <br /> Metabolic acids have not been detected previously in any well. <br /> • A degradation product of 1,2-DCP was detected. <br /> o 2-Chloropropane, a breakdown product of 1,2-DCP was detected at a <br /> concentration of 1.2 gg/L in the on-site intergrid monitoring well MW-6R. <br /> FUTURE WORK <br /> Sampling for the 2009 annual groundwater and remediation pilot monitoring event will be <br /> conducted in the 1St quarter 2009, and the report will be submitted to RWQCB by 1 May 2009. <br /> ' If you have any questions or comments, please call Nancy Bishop at (925) 899-2443 or either of <br /> the undersigned at(510) 285-2700. <br /> ' Sincerely, <br /> ' OFESS/ <br /> QR <br /> Nicole Gotberg <br /> � o= 2 Staff Geologist <br /> � � n+ <br /> CM A cl,� <br /> O� <br /> �OfCpLI* Arnab Chakrabarti, RE <br /> Project Engineer <br /> 1 <br /> ' P:\PRJ2003REM\WFS\VER\VERG\3Q08\Report Text\3Q08 Report WFS-VER.doc <br /> engineers I scientists I innovators <br />