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04/05/2003 15:51 FAX 209 948067'' <br /> 1 <br /> Supe of Cdffo�da miaem,Tomgmudw and RVAM4 AFM <br /> D"Awnga"r OF iSANSPMATIM <br /> Memorandum ampmwPoware <br /> as amm"Talmo <br /> TM ALEX MENOR- 10 saes March 24, 2003 <br /> Chief,Office of Permits Few 1003-gW-0115 <br /> • 06-SJ-4 <br /> PM 18.77/18.9 <br /> 617 <br /> :s.., LIIdDA FON((, Chief <br /> Encroachment Exceptions <br /> Division of Design <br /> MS 28 <br /> aid Encroachment Exception—Ozone Sparging Wells <br /> Your encroachment exception request, dated March 14, 2003, (received March <br /> 20, 2003), to allow for the placement of four ozone sparging wells, adjacent to <br /> Route 4, in the City of Stockton, within the State highway right of way, is <br /> conditionally approved. <br /> Groundwater contamination has been previously documented from a formar fuel <br /> station,outside the right of way, located at the northeast corner of Filbert Street <br /> and Route 4. The placement of the four proposed ozone sparging wells are <br /> regaested to comply with mandates from the California Regional Water Quality <br /> Control Board and the San Joaquin Department of Environmental Health to <br /> mitigate the migration of the hydrocarbon plume. , <br /> Directional drilling will be utilised to provide a transverse supply line fimm the <br /> treatment system(located at the farmer f W station) to the four sparging wells. <br /> No conSicts with utilities or operational improvements have been identified. <br /> Benefit to the State is realized through the documentation and identification of <br /> the contamination of State right of way from a known source, outside the right of <br /> way and a reduction of groundwater contamination. <br /> Conditions of Approval• <br /> 1. This approval does not set any precedents. <br /> 2. Applicant shall post a bond with the District Permit Branch to assure <br /> repairs to landscape, irrigation or other infrastructure damaged during <br /> the construction, access and removal of the sparging wells or borings, <br /> 3. Applicant shall provide a copy of any data or environmental report <br /> collected for this project to the District Environmental Branch. <br /> 'Caltrans imp,awa mo6iliQ.aerou Caa/arv,ie' <br />