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I� <br /> California R^-Yional Water Quality Contr-' Board <br /> Central Valley Reglan Y 1 <br /> Robert Schneider,Chair <br /> Linda Adams Arnold <br /> Secrerarvfar Sacramento Again Office Sch�rarzenegger <br /> F_nrrrorrmeraal 11020 Sun Center Drive!f200,Rancho Cordova,California:95670-6114 <br /> Phone(916)464-3291 •FAX(916)464-4645. ; Governor <br /> Protection h <br /> blip:/vww.%vaterboards.ca.pv/centralvallev.i <br /> ' il3 <br /> ii <br /> 12 ll-1.2006 September !' II c <br /> A i <br /> Iw <br /> Mr .Ted Swanson !� SSP 2 00 <br /> Valley Water Treatment a <br /> 6520 Crossroads Circle EidlJli ON(t°lL' i-lEALTFI <br /> PEW!T/SERVICES <br /> Citrus Heights, CA 95621 _ <br /> ,, :�GRQUNDWATER SAMPLING RESULTS, VALLEY WATER TREATMENT COMPANY, <br /> 612 NORTH BUENA VISTA ROAD,`STOCKTON; MVM �-COUNTY <br /> California Regional Water Quality Control Board, Central Valley Region (Regional Water <br /> Board) staff has received the following reports submitted on!your behalf by <br /> Geo-Phase Environmental Incorporated'. <br /> • Soil Boring Installation, dated 9 March 2005 <br /> • Work Plan Groundwater Monitoring Well Construction, dated 16 June 2005 <br /> Soil Boring Installation and Monitoring Well Construction, dated 14 March 2006 <br /> Quarterly Groundwater Monitoring Report, First Quarter 2006, dated <br /> 16 May 2006 I <br /> • Quarterly Groundwater Monitoring Report, Second Quarter:2006, dated <br /> 27 July 2006 } <br /> i <br /> Three letters dated 13 March 2006, 16 May 2006, and 27 July 2006 that report j <br /> salinity groundwater sample results. �; l <br /> The former Valley Water Treatment (VWT), located at 612 North Buena Vista Road, } <br /> Stockton (site) operated as a water softening company untlll2005.' The site is adjacent to <br /> the Stockton Deep Water Ship Channel on the north side of;the Turning Basin. In 2004, <br /> Geo-Phase Environmental, Inc. conducted a Phase.1 enviro,nmerital site assessment (PSA) <br /> at the site. The PSA identified a degraded,concrefe`lineatyne pit`as a=possible'source for <br /> soil and/or groundwater contamination. The site assessment was,';also performed to identify <br /> any potential contamination associated with the 1987 removal of an underground storage <br /> tank. The PSA recommended a soil investigation to assess 'subsurface conditions. <br /> On 25 February 2005, a soil investigation was performed at��the site. The investigation <br /> consisted of drilling three Geo Probe borings and collecting soil and groundwater samples. <br /> One boring was drilled in the former UST tank pit area (B-3)' one.�drilled within a few feet of <br /> the brine pit (B-2) and one boring (B-1) was drilled in the northeast corner of the property } <br /> with the intent of collecting a groundwater sample that would represent background <br /> conditions for salinity and total dissolved solids. Groundwater samples from the three <br /> I <br /> California Environmental Protection.Agency <br /> %Yepyrled paper <br />