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THOMAS M. GAU <br />CHIEF DEPUTY DIRECTOR <br />MANUEL SOLORIO <br />DEPUTY DIRECTOR <br />STEVEN VANKLER <br />DEPUTY DIRECTOR <br />ROGERJANES <br />BUSINESS ADMINISTRATOR <br />THOMAS R. FLINN <br />DIRECTOR <br />Mr. Michael Elmore, Land Agent <br />Shell Oil Pipeline Company LP <br />20945 South Wilmington Avenue <br />Carson, California 90810 <br />August 1, 2008 <br />P. 0. BOX 1810 -.1810 E. HAXELTON AVENUE <br />STOCKTON, CALIFORNIA 98201 <br />(209) 468-3 FAX (209) 468-2999 <br />www,sjgov.org/pubmrks <br />SUBJECT: EASEMENT ENCROACHMENT— CORRAL HOLLOW SANITARY LANDFILL <br />CLOSURE CAP EXTENSION <br />Dear Mr. Elmore: <br />Thank you for your time on the phone with Ms. Julia Gillette, and your email of March 21, 2008, <br />regarding our plans to install four Landfill Gas (LFG) Wells and extend the landfill closure cap <br />within San Joaquin County's Corral Hollow Sanitary Landfill (CHSL) property over Shell Oil's <br />pipeline easement (Figure 1 and 2). <br />The County intends to install LFG wells by October 2008 to increase the effectiveness of the <br />existing LFG collection system (Figure 3). We will follow the general requirements (G.R.) for <br />crossing Shell Oil's pipelines per your email during the installation of the wells. Shell Oil will be <br />notified a minimum of two days before well Installation. <br />Also, the County intends to cover uncapped refuse by extending the closure cap within the <br />northeastern portion of our property, over this same easement. Extending the cap over un- <br />capped refuse will comply with the California Integrated Waste Management Board and <br />California Regional Water Quality Control Board requirements. <br />The Closure cap extension project will involve: <br />1. Surveying and then removing the existing ,pipeline markers. <br />2. Removing 1 -foot of soil, generally following existing contours of the area. The depth of <br />the existing oil pipeline is more than 5 feet deep; thus, the excavation for the base grade <br />will not affect the pipeline and will conform to Shell Oil's G.R.'s. <br />3. Placing a low hydro -conductivity barrier layer over the area. The County has proposed <br />using a Geocomposite Clay liner (GCL) for this purpose. To facilitate access to the <br />pipeline in case of repair, we will install the GCL panel with removeable panels directly <br />over the pipeline. These GCL panels can be removed to access the pipeline as needed. <br />If removed, the County will repair and replace the cover after Shell Oil has completed its <br />work. <br />4. Placing 1 -foot of soil cover over the GCL and doing the final grading (Figure 3). <br />5. Re -installing pipeline markers on the surveyed locations. <br />Again, Shell Oil's G.R. will be followed in this project. <br />