Laserfiche WebLink
l <br /> 0 <br /> SE www-secor.com <br /> INTERNATIONAL <br /> F �p p T 3017 Kilgore Road,Suite 100 <br /> SEC R , �,del �.tf'18 P{ [ I I C Q�_ f Rancho Cordova,CA 95670 <br /> iii ?(; {i a � 916-861-0400 TEL <br /> 916-861-0430 FAx <br /> 03 SEP 12 PPS 1: 04 <br /> September 10, 2003 <br /> Ms. Lori Duncan <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, CA 95202 <br /> RE: Addendum to Soil and Groundwater Assessment Work Plan <br /> 7-Eleven Store#32262 <br /> 2360 West Grant Line Road. <br /> Tracy, California <br /> SECOR Project No.: 77EL.32262.03.0104 <br /> Dear Ms. Duncan: <br /> This work plan addendum is prepared by SECOR International Incorporated (SECOR) on behalf of <br /> Mr. Ken Hilliard of 7-Eleven Inc. for the 7-Eleven Store Number 32262 located at 2360 West Grant <br /> Line Road in Tracy, CA. This work plan was prepared in response to the San Joaquin County <br /> Environmental Health Department (SJCEHD) letter stamp dated August 22, 2003 requesting an <br /> addendum to the SECOR's Soil and Groundwater Assess Work Plan dated August 12, 2003 to <br /> address the issue of vertical definition of the contamination at the site (Attachment A). <br /> It is SECOR's professional opinion that installation of a deep depth discrete well in the initial phase of <br /> assessment of the shallow groundwater conditions should be deferred until the distribution of the <br /> dissolved plume, flow direction, and gradient in the shallow groundwater at the site have been <br /> determined. After completion of two to three quarterly groundwater monitoring and sampling events <br /> at the site, SECOR will review the quarterly results and submit a work plan to define the vertical <br /> extent of dissolved gasoline range petroleum hydrocarbons at the site. If the lateral extent of <br /> dissolved gasoline range petroleum hydrocarbons has not been defined, SECOR will also <br /> recommend additional wells to further defined lateral extent of the dissolved plume. <br /> Should you have any questions regarding this site, please contact the undersigned at (916) 861- <br /> 0400 extension 223. <br /> Sincerely, <br /> SECOR International Incorporated <br /> Jaff Auchterlonie <br /> Project Manager <br /> i <br /> <ZYhE"B`oLR.G: <br />+ Principal Geologist <br /> Attachments: Attachment A- Regulatory Letters <br /> cc: John Wainwright, SECOR/Ken Hilliard, 7-Eleven Inc. <br /> Mr. James L. Barton, CRWQCB-Central Valley Region <br /> , <br /> I:\7-Eleven\7-11 Stores\32262\Workplans\32262_Addn-Well Instl WkPlan.doc <br />