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San Joaquin County DIRECTOR <br /> o D , N Donna Heran, REHS <br /> Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla, REHS <br /> U) (}n Stockton , California 95202-3029 PROGRAM COORDINATORS <br /> Carl Borgman, REHS <br /> cq' ' Vol F • Website: www s19 ov or9 1ehd Mike Huggins, REHS , RDI <br /> � rFOMargaret Lagorio, REHS <br /> Phone: (209) 468 -3420 Robert McClellon, REHS <br /> Fax : (209) 464-0138 Jeff Carruesco, REHS, RDI <br /> Kasey Foley, REHS <br /> JAMES MILLS <br /> WESTREC MARINAS <br /> 14900 W HIGHWAY 12 JUL ® 9 2007 <br /> LODI CA 95242 <br /> RE : King Island Resort- UST Investigation Site Code : 1557 <br /> 11530 W . Eight Mile Rd . RO# : 309 <br /> Stockton , CA. 95219 SWRCB-CUF#: 003668 <br /> WORKPLAN : Addendum to Work Plan for Vertical and Lateral <br /> Subsurface Investigation <br /> DATED : April 18 , 2007 <br /> PREPARED BY: ATC Associates Inc . — Todd Hafner, PG . <br /> STATUS : APPROVED with conditions noted below. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN [Health & <br /> Safety Code (H & S ) Section 25296 , 1 0 (c)(3 )1 : <br /> • Install seven (7) monitoring wells on and offsite as required by the <br /> EHD to investigate the lateral and vertical extents of the petroleum <br /> soil and ground water plume. Shallow (A zone , MW-8A, 9A, 10A) , <br /> mid -depth (B zone , MW-11 B, 126 , 1313) and deep (C/D zone, MW- <br /> 14D) . <br /> • Mid depth wells to be installed in a 35-feet deep steel conductor <br /> casing and deep MW-14D to be installed within two steel conductor <br /> casings . <br /> • Continuous core to 20 -25 ' bgs , collect at least two soil samples from <br /> each boring , and analyze for TPH as gasoline, BTEX, and fuel <br /> oxygenates/lead scavengers (826013) . <br /> • Survey in new wells and add to existing quarterly sampling and <br /> monitoring requirements . <br /> • Submit report of findings to the EHD then follow up with the SCM <br /> and revised CAP later. <br />