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• <br />Environmental Consultants 3117 Fite Circle 916 361-1297 <br />and Contractors Suite 108 FAX 916 361-1299 <br />Sacramento, CA 95827 www.scsengineers.com <br />May 28, 2009 <br />File No. 01205164.00, Task 8 <br />Mr. Robert McClellon <br />County of San Joaquin <br />Environmental Health Department <br />600 East Main Street <br />Stockton, CA 95202 (559) 230-6000 <br />SUBJECT: RESPONSE TO SAN JOAQUIN COUNTY LETTER REGARDING <br />REVISED TITLE 27, PERIMETER PROBE MONITORING NETWORK <br />WORK PLAN, FORWARD LANDFILL (SWIS Facility No. 39 -AA -0015) <br />Dear Mr. McClellan: <br />SCS Engineers (SCS) has prepared this revision of the perimeter probe monitoring network work <br />plan included in our previously submitted Revised Title 27 Compliance Review, Perimeter Probe <br />• Monitoring Network dated December 8, 2008. On September 12, 2008, SCS Engineers, on <br />behalf of behalf of the Forward Landfill (Forward), which is owned and operated by Forward, <br />Inc., a wholly-owned subsidiary of Allied Waste Industries (AWI), submitted a Title 27 <br />Compliance Review and Work Plan, Perimeter Probe Monitoring Network. On October 29, <br />2008, the County of San Joaquin, Environmental Health Department (EHD) requested additional <br />information. This information was supplied by SCS, on behalf of Forward, Inc., in a Revised <br />Title 27 Compliance Review and Work Plan, Perimeter Probe Monitoring Network, dated <br />December 8, 2008. On February 10, 2009, the EHD responded to the revised work plan <br />directing Forward to install 2 new probes at the locations specified in the letter; however, the <br />letter did not include a request for submittal of an additional revised work plan. SCS <br />understands that the EHD has indicated to Forward in subsequent communications that a new <br />work plan is required. This submittal is intended to satisfy the EHD's request for a revised work <br />plan pursuant to the EHD's February 10, 2009 letter. The requested changes are addressed <br />below and the original letters from the EHD are included as attachments for your reference. <br />In the February 10, 2009 letter, the EHD requested changes to the revised work plan based on the <br />following points: <br />1. In the February 10, 2009 letter, the EHD clarified the distances between the probes with <br />"marginal" separation distances and determined that the distances between GP -1 and GP- <br />• <br />