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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SANJOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K. Heran, R.E.H.S. 304 East Weber Avenue <br /> Carl Borgman, R.E.H.S , <br /> Director , Third Floor Mike Huggins, R.E.H.S., R.D .t. <br /> .E <br /> . Al Olsen, R .H.S. Stockton, California 95202-2708 Douglas w . Wilson, R.E.Hl S . <br /> • �,4. ,l_i�Fo�'aN, .\P <br /> Program tblmms Telephone : (209) 468-34 <br /> 20 Margaret Lagono, R.E.H.S . <br /> Laurie R.E.H.S. Robert McClellon, R.E.H.S <br /> . <br /> A. <br /> 0138 <br /> rogram Manager Fax : (209) 46 - <br /> Mark Barcellos, R.E.H.S. <br /> FILE COPY <br /> JAMES MILLS <br /> WESTREC MARINAS <br /> 14900 W HIGHWAY 12 <br /> LODI CA 95242 <br /> Site Code : 1557 <br /> RE : King Island Resort-UST Investigation RO#: 309 <br /> 11530 W . Eight Mile Rd , 3668 <br /> Stockton , CA. 95219 SW RCB CUF# . 00 <br /> WORKPLAN : Work Plan for Subsurface Investigation and Preparation <br /> Re <br /> of a Problem Assessmentort — King Island Resort p <br /> DATED : October 8 , 2003 <br /> PREPARED BY : ATC Associates Inc . - Jeanne Homsey, PE . <br /> STATUS : APPROVED with conditions noted below . <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN [Health & <br /> Safety Code ( H & S ) Section 25299 . 37 ( c)(3 )l : <br /> Push three CPT dual -hole borings to 100 ' bgs or greater for vertical <br /> delineation of MtBE plume and , <br /> Conduct subsurface preferential pathway investigation to identify <br /> man -made conduits and migration potential and construct and <br /> submit a subsurface ` model ' (MODFLOW) for the site and , <br /> Submit report of findings in format of PAR, complete with remedial <br /> need and alternative evaluation , mass balance calculations , and fate <br /> and transport data. <br /> COMMENTS AND CONDITIONS : <br /> Soil sampling not included in work plan . Adequate number of soil <br /> samples are to be collected and analyzed for all petroleum <br /> constituents of concern (TPH9 , BTEX, five Oxygenates , lead <br /> scavengers, methanol , ethanol , etc) and , <br /> There is no 1 ,2-DCA soil or groundwater data included in the <br /> quarterly monitoring reports or in the collection details of this work <br /> plan . Selected soil samples and all water samples from this CPT <br /> investigation are to be additionally analyzed for 1 ,2 -DCA by EPA <br /> Method 8260B and , <br /> Quarterly monitoring well sampling is to include 1 ,2 DCA by EPA <br /> Method 82606 , as well as the other constituents noted above and , <br />