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GOVERNOR <br />EDEMJNO G. BROWN LIN. <br />6•LIFORNI• •••:711111 MATTHEW RODRIGUEZ <br />41144.001 217;Lr/ NAM% NeT°A"l PROTECT ION Water Boards <br />Central Valley Regional Water Quality Control Board <br />23 July 2018 <br />Min Le <br />McBillin Real Estate Investment <br />3293 Napa Drive <br />San Jose, CA 95148 <br />RECEIVED <br />JUL 2 5 2018 <br />LINVIRONMENTAL HEALTH <br />D E PA RTN1ENT <br />McBILLIN REAL ESTATE INVESTMENT, 2154 S. EL DORADO STREET, STOCKTON, SAN <br />JOAQUIN COUNTY, CASE# 391184 <br />Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br />reviewed the Soil Vapor Extraction & In-Situ Air Sparging Pilot Test Work Plan (Work Plan) <br />dated 21 June 2018, submitted on your behalf by Advanced GeoEnvironmental Inc. (AGE) for <br />the McBillin Real Estate Investment unauthorized petroleum release at 2154 S. El Dorado <br />Street in Stockton (Site). In the Work Plan, AGE proposes to install three (3) soil vapor <br />extraction (SVE) and two (2) in-situ air-sparge (AS) wells in the source area, and to perform an <br />8-hour SVE/AS combined remedial pilot test. <br />AGE proposes to install the remedial wells as follows: <br />Well Location Function Total <br />Depth <br />_(ft bgs) <br />Screen <br />Interval <br />(ft bgs) <br />Target <br />Zone <br />Soil Sampling <br />Depth <br />(ft bgs) <br />Analysis <br />\NV-1 Between former <br />USTs 3 & 4 <br />Soil Vapor <br />Extraction <br />25 10-25 Vadose 5ft <br />intervals <br />from 5ft <br />to Total <br />Depth <br />TPHg, TPHd, <br />BTEX, MTBE, <br />TAME, DIPE, <br />ETBE, TBA, <br />1,2-DCA, EDB, <br />naphthalene <br />VW-2 Between former <br />USTs 1 & 2 <br />VW-3 Near boring B-3 <br />IAS-1 Between former <br />USTs 2 & 3 In-Situ Air- <br />Sparge 35 30-35 <br />Shallow <br />Ground- <br />water IAS-2 Near boring B-3 <br />TPHg=total petroleum hydrocarbons as gasoline; TPHd=TPH as diesel; BTEX= benzene, toluene, ethylbenzene, <br />xylenes; MTBE=methyl tert butyl ether; TAME=tert amyl methyl ether; DIPE=di-isopropyl ether; ETBE=ethyl tert <br />butyl ether; TBA=tert butyl alcohol; 1,2-DCA=1,2-dichloroethane; EDB=ethylene dibromide; ft=feet; bgs=below <br />ground surface; UST=underground storage tank <br />AGE proposes to perform the pilot test as follows: <br />Function Equipment Duration Active <br />Well <br />Observation <br />Points <br />Observed <br />Parameters <br />Observation <br />Frequency' <br />Effluent <br />Treatment <br />Soil <br />Vapor <br />Extraction <br />150cfm <br />(2.5hp) <br />Blower <br />8 hours VW-1 <br />Influent, <br />Effluent <br />Flow Rate 30 Minutes 4x 400Ibs <br />GAO <br />Vessels <br />Hydrocarbon <br />Concentrations 2 Hours <br />VW-2, VW-3 Pressure 30 minutes <br />KARL E. LONGLEY ScD, P.E.. CHAIR I PATRICK PULUPA, ESQ., EXECUTIVE OFFICER <br />11020 Sun Center Drive #200, Rancho Cordova, CA 95670 I www.waterboards.ca.govicentralvalley <br />RECYCLED PAPER