Laserfiche WebLink
it Page 1 of 1 <br /> Vicki McCartney [EH] <br /> From : William Little [wlittle@advgeoenv. com] <br /> Sent: Thursday, August 01 , 2013 9: 51 AM <br /> To: Vicki McCartney [EH]; Nuel Henderson [EH] <br /> Subject: 6230 Pacific Ave, Stockton <br /> Attachments: Canepa Pacific GW Profile 2013 . pdf <br /> AGE has discussed the justification to implement a semi-annual groundwater monitoring and <br /> sampling program at 6230 Pacific Avenue — Canepa CW, with Nuel Henderson and presents <br /> your office the following : <br /> Monitoring the site for depth to water is warranted , as the adsorbed contamination will interact <br /> through the water table level and the migration of dissolved petroleum is affected by the <br /> groundwater flow direction . <br /> i� The sampling of well MW-3 is reasonable to provide dissolved contaminant concentration <br /> I� trends for fuel additives and lateral definition . <br /> The sampling of well MW-2 is reasonable to provide dissolved contaminant concentrations, for <br /> continued evaluation of the elevated benzene and is related to the release of fresh petroleum <br /> (high benzene ratio) , while the location provides lateral definition . <br /> 1 The "core' set of wells are stable in concentration for petroleum hydrocarbons following the <br /> last remediation (dispensers) and new data should resemble previous events (December) , <br /> providing no relevance to the dissolved petroleum plume dynamics. <br /> Therefore, AGE proposes semi-annual sampling of wells MW-2 and MW-3 and depth to water <br /> measurement for all site wells, during the following month to reduce the cost for the RP and <br /> allow for continued site compliance . <br /> Additionally, AGE has received client approval to finalize the required groundwater feasibility <br /> study for submittal to your office . <br />'i <br /> I <br />'d Thank you in advance for your help in this matter. Please call me if you have any questions . <br /> Sincerely, <br /> William R. Little <br /> California Professional Geologist 7473 <br /> Oregon Registered Geologist G2254 <br /> Washington Licensed Geologist 2778 <br /> Advanced GeoEnviron mental Inc. www. advgeoenv.com <br /> Stockton • Santa Rosa • Monterey • Brea • Spokane • Reno • Dallas <br /> (800)511 -9300 <br /> This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any <br /> unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please contact the <br /> sender by email/fax and destroy all paper and electronic copies of the original message. <br /> 8/1/2013 <br />