ARCHIVED REPORTS_FIELD NOTES AND PERMITS THROUGH 4_4_1997

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r� tevine•Fricke•Recon NT AL HEAL I1�� ENG NEERS,HVDROGEOLOGISTS&APPLIED SCIENTISTS �VVICE November 14, 1996 i AN 11: 56 3966.05-003 via fax and regular mail Mary Meays, R.E.H.S. San Joaquin County Public Health Services Environmental Health Division 304 E. Weber Avenue, Third Floor P.O. Box 388 Stockton, California 95201-0388 Subject: Notification of Continuation of Well Permit for Cone Penetrometer Testing Borings One Through Seven, Lincoln Center, Stockton, California Dear Mary: Levine-Fricke-Recon Inc. (LFR) recently completed the advancement of one cone penetrometer testing (CPT) boring (CPT-100) and associated push-in polyvinyl chloride (PIPP) borings as part of the Phase I Interim Remedial Action (IRA) field scoping activities at the Lincoln Center (LC) Site in Stockton, California. The borings were completed under well permit number 010907, issued by San Joaquin County Public Health Services, Environmental Health Division (SJCPHS/EHD) on November 6, 1996. The borings were advanced by Gregg In-Situ, Inc., under the supervision of LFR. LFR plans to advance 14 additional CPT borings and associated PIPP borings as part of the Phase I IRA field scoping activities at the LC Site. The locations of these borings are presented on Figure 1. We propose to advance these borings during a period of approximately four weeks, beginning on the night of Monday, November 18, 1996. We do not plan to work on weekends or during the Thanksgiving holiday. CPT/PIPP boring locations 1 through 7 are on the same assessor's parcel (number 79) as CPT-100. It is our understanding that we are authorized to complete these borings under the existing permit for CPT-100, because the work will be performed within the same parcel by the same subcontractor (C-57 licensee), Gregg In-Situ, Inc. We have attached a copy of permit number 010907, for your convenience. We will submit well permit applications and associated fees for the CPT/PIPP borings proposed on the other three parcels (see Figure 1) under separate cover by November 15, 1996. We anticipate that we will need to advance one or two PIPP borings for every CPT boring to collect discrete-depth groundwater samples from the A-zone aquifer. The borings will be approximately 3 inches in diameter and will be completed to depths of approximately 75 feet below ground surface. The borings will be backfilled with a cement-bentonite grout following completion 1900 Powell Street, 12th Floor, Emeryville, California 94608-1827 • (510) 652-4500 • fax (510) 652-2246 • O//ices Worldwide