Laserfiche WebLink
i <br /> 19449 Riverside Drive,Suite 230, Sonoma,California 95476- <br /> Telephone: 707935.4650 Facsimile: 707.935.6649 <br /> CONESTOGA-ROVERS - I - 1 :2007 <br /> &ASSOCIATES 6 - �� -�C www.CRAworld.com_ <br /> ENVIR��wIENGNEFL�H September.28, 2007 <br /> ,_. PERf�ITISER'JICES _ _ <br /> Ms: Lori Duncar 'r s <br /> San Joaquin County Environmental Health Department' <br /> -. 600 East Main Street' <br /> Stockton,California 95202 =- <br /> Re: Site Investigation Work Plan - <br /> Shell branded Service Station .. .. <br /> 2375 West Grant Line Road <br /> Tracy, California <br /> SAP Code.136187- <br /> Incident No 97471967 <br /> -SJCEHD Site Code: 0001473„ <br /> - <br /> Dear Ms. Duncan:17 ; <br /> Conestoga-Rovers•& Associates (CRA) prepared this site investigation work plan on behalf of, <br /> Equilon Enterprises LLC dba Shell Oil Products US (Shell) for, the_.referenced site <br /> (Figures 1 and 2). ; The San Joaquin;,County Environmental .Health Department (SJCEHD) <br /> requested this work plan in their July,31,-2007 letter to Shell: ,The scope of work presented in, , - <br /> -this work plan complies with SJCEHD and Central Valley. Regional'Water Quality_Control _ <br /> Board guidelines - <br /> SITE BACKGROUND <br /> Site Description - <br /> The site is an operating Shell-branded service station located on the northwest corner of West = . <br /> Grant Line Road and Joe Pombo Parkway in Tracy,.Califomia (Figures l and 2). The site layout <br /> consists of four underground storage tanks(USTs),'nine dispenser islands,a station building and <br /> a car wash. There are three active service stations located nearby the subject site. <br /> Previous Investigations - <br /> January 2003 Well InstallafI As part of Shell's-voluntary Groundwater Assessment Program <br /> (GRASP), K14M installed four groundwater monitoring wells (MW-1 through-MW-4) at the <br /> subject site during Januaiy 2003.--Groundwater samples-collected from .these wells contained <br /> MTBE at concentrations ranging,from 0.69 to 730 microgram per liter: . After discovery of <br /> MTBE in groundwater beneath this site, Shell submitted an Unauthorized Release Report on <br /> March 25,2003. <br /> Equal <br />�.; • - _ - .__ �._ Employment , <br /> Oppartunity Employer <br /> - •t _ _ <br /> Worldwide Engineering,Environmental,Construction and IT Services <br /> r, <br /> I <br />