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en viros <br /> October 22, 1997 <br /> Mr. Michael Infurna <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 388 <br /> Stockton,California 95201 <br /> Re: Site Investigation Work Plan - Addendum <br /> Former Shell Service Station <br /> 1265 - 1267 Country Club Blvd. <br /> Stockton,California <br /> Dear Mr.Infuma: <br /> This work plan addendum has been prepared by Enviros,Inc. (Enviros)on behalf of Shell <br /> Oil Products Company in response San Joaquin County Public Health Services' (SJCPHS) <br /> request to provide additional information pertaining to construction of the ground water <br /> monitoring wells proposed in our October 1, 1997 Work Plan. <br /> The proposed well construction is described on the attached Plate 1. Well screen will be <br /> placed approximately 10 feet above and 10 feet below first encountered ground water. <br /> During previous site investigation activities performed in April 1997,ground water was <br /> encountered at depths ranging from 19 to 33 feet below grade(fbg),and stabilized at <br /> depths of 13 to 16 feet below grade. Ground water will be allowed to stabilize in the well <br /> boring prior to placement of the well screen. It is anticipated that stabilized ground water <br /> depths will be located approximately 20 fbg during upcoming investigation activities. <br /> If you have any questions regarding the scope of work outlined in this work plan, <br /> ,it . .mz1i t 6`3 <br /> call. <br /> E�a�J4sI KIMEN BMd.` EA 11 IN <br /> t � ��� <br /> Enviros,Inc., ;,04 E. Wabof AVO.T h'fi, Pf.or <br /> P.O. B�)x ;?^£, :a�::..': �,CAg95201- 388 <br /> Diane M. Lundquist, ,.E. <br /> Senior Engineer ' fi,feftr'.)Ved <br /> C46725 <br /> &. .,y: Sos Remarks <br /> Attachments <br /> Plate 1. Proposed Monitoring Well Construction Detail �-- <br /> cc: Mr. Tom Maher. Shell Oil Products Company ` ��, <br /> Mr. Alex Perez,Shell Oil Products Company <br /> Mr.Phillip Metzger,Bank of the Westt <br /> Mr. Lance Anderson,Miller. Starr, and Regalia SES; ri�vil of theSn plans ext?it s only to that <br /> Ms. Elizabeth Thayer,Regional Water Quality Control BoardVVIN-4h is shownshown�raft.'A. da-:,Cj 1�. ed he recln but <br /> d; l!-,; not authcr'°ze or r'.,prov�3 pnv onli; sion <br /> or einr v�a-w:)n Of requirements ®f :Stat i wrs or <br /> Local ordinances. <br /> Enviros, Inc. 270 Perkins Street Sonoma.Catilo n,a Tet 707/935.4850 <br /> P.O Box 259 95476-0259 Fax 707/935-6649 <br />