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JUN 25 '96 01"02PM SMITH ENVIRONMENTAL TECH CORP P•2 <br /> 4`2ti <br /> June 25, 1996 <br /> 95-122-01-01 <br /> Mr. loon Rowe <br /> San Joaquin'County Public Health Services <br /> Environmental Health Division <br /> Ro.Box 388 <br /> Stockton, CA 95201-0388 <br /> Subject; Attachment to the Addendum to the "Workplan for Additional Subsurface <br /> Investigation",:Fayette Manufacturing Site, 7675 West Eleventh Street, Tracy, <br /> Cali mia Site Code: 2233 <br /> Mr.�Kowd: <br /> Smith Environmental Technologies Corporation, on behalf of Dr. A.R. Glover, is subnutting this <br /> attachment to the addendum to the "Workplan for Additional Subsurface Investigation" per our <br /> telephone conversation on Pune 21, 1996. The purpose of the additional activities proposed is to <br /> collect and analyze sod gas and groundwater samples for biochemical parameters to-determine if <br /> biorezmediation is occurring at this site. <br /> Smith Environmental proposes to conduct the following activities: submit for laboratory,analysis <br /> soil gas samples from each boring for oxygen, carbon dioxide, and methane; conduct field analysis <br /> of grab groundwater samples collected from each boring and groundwater samples coliccted <br /> quarterly from monitoring wells MW-1, INM-2 and IVW-3 for dissolved oxygen and oration- <br /> reduction,potential, in addition to pbl; specific conductance, and temperature; and submit grab <br /> grnrprdwater samples from each boring and groundwater samples collected quzrterly from lid-i, <br /> MW-2- and 1'vfVtl-3 for laboratory anaSyses far carbon dioxide, alkalinity, nitrate, sulfate, and <br /> ferrous iron in addition to total petroleum hydrocarbons as gasoline, benzene, toluene, <br /> ethylbeenzene, xylenes and methyl tertiary butyl ether. Field methods for collecting sod 8= <br /> samples and groundwater samples are presented in Attachment 1. <br /> All, work described in this addendum will be performed in accorda=e with Smith <br /> Environmental's Field Procedures and Site Safety Plan on file with PUStEEID, and will be <br /> gerformod under the direcbori of a California Registered Geologist or Professional Enginn er. In <br /> addition, 'soi1 ceration will bo conducted in accordance with San Joaquin Valley Unified Air <br /> Pollution Control District regulations. <br /> FM Graphic Drive Modaw.GA 95351-2302 (20 379=1 -Fac sr4.=: <br /> E+rgfnerrFng - CSaesrllrlx� - Remediddon CbMWrLVd0ff <br />