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i AL From: Robert McClellon [EH] Sent: Tuesday, January 20, 2004 9:06 AM To: 'Kim Schwab' Subject: RE: Questions Regarding Gas Foothill Landfill Hi, Kim all of this except the valve being left open is on an inspection report Robert. -----Original Message ----- From: Kim Schwab[mailto:SchwabK@rb5s.swrcb.ca.gov] Sent: Friday, January 16, 2004 3:03 PM To: Robert McClellon [EH] Subject: Re: Questions Regarding Gas Foothill Landfill Thank you very much. Is it possible to put this in writing as part of your inspection reports for our record? I won't need that by Tuesday. Kim >>> "Robert McClellon [EH]" <RMcClellon@sjcehd.com> 01/16/04 02:51PM Hi, Kim Foothill Landfill gets an inspection by the Environmental Health Department on a monthly basis. On July 18, 2003 Ted Tasiopoulis conducted a routine inspection at Foothill. During the inspection gas levels were monitored. Soil Gas Probe (SG1) was cited for exceeding state minimum standards (5% at the boundary). SG1 was measured to have a concentration of 7%. Due to the high concentrations found in SG1, a new well was proposed closer to the actual boundary of the landfill (See T27CCR Section 20925 (2)). SGll was installed approximately 300 feet West of SG1. On October 22, 2003, Robert McClellon conducted a routine inspection at Foothill Landfill. During the inspection SGll was monitored. The level of methane measured in SG11 was 2.2%. On December 31, 2003, Robert McClellon conducted a routine inspection at Foothill Landfill. During the inspection SGll was monitored. The level of methane measured in SG11 was 1.3%. The inspection report indicates 1.3ppm by mistake (it should have been recorded as %). During that inspection SG1 was also monitored. SG 1 measured 375 ppm methane. The valve on the probe was open. It had been left open by someone. There was no indication how long the probe valve had been left open. Robert McClellon closed the valve. Robert McClellon informed Mike Carrol and Jaime Perez that the valve had been left open and that it would need to be kept closed except for monitoring purposes. Thanks Robert Section 20925. CIWMB - Perimeter Monitoring Network. (T14: Section 17783.5) (a) Location (1) Perimeter subsurface monitoring wells shall be installed around the waste deposit perimeter but not within refuse. The entire perimeter of the disposal site may not warrant the installation of monitoring wells. In this case, the operator shall demonstrate to the satisfaction of the 1 Thanks