Laserfiche WebLink
Og%200 <br />Water Boards <br />EDMUND G. BROWN JR. <br />GOVERNOR <br />MECRETARY <br />ATTHEW FR00: RIOUEZ <br />ENVIRONMENTAL PROTECTION <br />Central Valley Regional Water Quality Control Board <br />30 June 2017 <br />Vincent Victorine George Beltker <br />J.M Equipment Company Inc. Geo Corporation <br />321 Spreckles Avenue 2306 Jackie Court <br />Manteca, CA 95336 <br /> <br />Oakdale, CA 95361 <br />J.M. EQUIPMENT COMPANY, 1245 WEST CHARTER WAY, STOCKTON, SAN JOAQUIN <br />COUNTY, CASE #390973 <br />Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br />reviewed the Revised Work Plan for Shallow Soil and Soil Vapor Investigation (Revised Work <br />Plan), dated 19 June 2017, submitted on your behalf by Ground Zero Analysis Inc. (GZA) for the <br />J.M. Equipment Company property located at 1245 West Charter Way in Stockton (Site). <br />In the Revised Work Plan, GZA proposes to advance five (5) shallow soil borings and three (3) <br />temporary soil vapor probes, as follows: <br />Proposed <br />Locations <br />Total <br />Depth <br />(ft bgs) <br />Soil Soil Vapor <br />Sampling <br />Depths <br />(ft bgs) <br />Analysis Sampling <br />Depths <br />(ft bgs) <br />Analysis <br />5 Borings 8 4, 8 <br />TPHg, BTEX, MTBE, TBA, <br />DIPE, ETBE, TAME, <br />1,2-DCA, EDB, naphthalene <br />-- -- <br />Probes 5 __ 3 Vapor DIPE, __ 5 <br />TPHg, BTEX, MTBE, TBA, <br />ETBE, TAME, <br />1,2-DCA, EDB, naphthalene, <br />DFA, oxygen <br />ft bgs=feet below ground surface; TPHg=total petroleum hydrocarbons as gasoline; BTEX=benzene, toluene, ethylbenzene, <br />xylenes; MTBE=methyl tert bu yl ether; TBA=tert butyl alcohol; DIPE=di-isopropyl ether; ETBE=ethyl ten t butyl ether; TAME=tert <br />amyl methyl ether; 1,2-DCA=1 2-dichloroethylene; EDB=ethylene dibromide; DFA=1,1-difluoroethane <br />GZA proposes advancing the borings to assess for petroleum hydrocarbons in shallow soil and <br />compare Site conditions to Direct Contact and Outdoor Air Exposure criteria, as established in <br />the State Water Resources Control Board's Low Threat Underground Storage Tank Case <br />Closure Policy LTCP). GZA proposes the 3 soil vapor probes in order to assess the LTCP <br />Vapor Intrusion risk to the southern shop building on the Site property. <br />Central Valley Water Board staff concurs with the scope of work as proposed in the Revised <br />Work Plan. By 29 September 2017, please submit a Site Assessment Report. In this report, <br />please include an evaluation of Site data as compared to all LTCP General and Media Specific <br />KARL E. LONGLEY ScD, P.E., CHAIR I PAMELA C. CREEDON P.E., BCEE, EXECUTIVE OFFICER <br />11020 Sun Center Drive #200. Rancho Cordova. CA 95670 I www.waterboards.ca.gov/centralvalley <br />Ca RECYCLED PAPER