Laserfiche WebLink
��--� r 1 1 <br /> OF <br /> 1 <br /> m3KX�CLL1 & ASS0CIA1TES ,--1°N-C .- - <br /> GEOTECHNICAL ENGINEERING • ENVIRONMENTAL EINGINECRI'N(-",' <br /> CONSTRUCTION TESTING & INSPECTION <br /> 98JUL 27 Pil 1 24 <br /> By First Class Mail and <br /> �I <br /> Telecopy(209)464-0138 <br /> i� <br /> II <br /> I <br /> July 23, 1998 Project No. 014-978081 <br /> Mr. Michael J. Infurna, Senior REHS <br /> San Joaquin County Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton;CaI'ifo'rnia F95202' —-- ,_9� .__�• .T- = -r - - - .I - - -._ _ - <br /> RE: Workplan Addendum <br /> June 9, 1998 Site Assessment Workplan { <br /> H&H Engineering Property <br /> 212 Industrial Drive <br /> Stockton, California { <br /> b I <br /> Dear Mr. Infurna: <br /> On behalf of Ms. Jan Thompson of Wilbur-Ellis Company, and with the acknowledgment of Mr. Doug <br /> Reynolds of H&H Engineering, Krazan & Associates, Inc. (Krazan) has prepared this]addendum to <br /> address comments in the June 23, 1998 San Joaquin County Environmental Health Division (SJCEHD) <br /> letter. The responses to the issues noted within the June 23, 1998 letter are summarized below. <br /> IJI' <br /> Item No. 1. Soil samples will be collected from 60 feet below ground surface (bgs). If soil <br /> . I <br /> contamination is found at 60 feet bgs, vertical investigation must continue until two <br /> consecutively collected and analyzed five foot soil samples verify that detectable <br /> concentrations of petroleum hydrocarbons are no longer present. <br /> I <br /> Item No. 2. The placement of the required monitoring wells will be based on field and laboratory data <br /> collected from soil and groundwater sampling in "Phase One". The wells will be placed as <br /> close to the "zero-line" of the groundwater contamination as possible so an accurate <br /> assessment of the extent of the plume can be made. The location of the proposed <br /> monitoring wells shown in the June 9, 1998 workplan are diagrammatic; the(final location <br /> 11 <br /> will be based on the above-noted criteria. <br /> 215 West Dakota Avenue•Clovis California 93612•(209)348-2200•FAX(209)348-2201 <br /> Offices Sewing the Western United States <br /> 98081.ADD <br /> li . <br />