CORRESPONDENCE_2008 (1/08 TO 6/08)

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From: Robert McClellon [EH] Sent: Thursday, January 03, 2008 2:24 PM To: Michael Kith [EH]; Natalia Subbotnikova [EH] Subject: FW: SJ -580 & Corral Hollow Landfill Investigation Attachments: Exnt of Refuse in CalTrans 12-26-07.pdf; Parcel Trace Rev Jan 3 08 n Timeline.pdf FYI -----Original Message ----- From: Michael Carroll [mailto:mcarroll@sjgov.org] Sent: Thursday, January 03, 2008 1:40 PM To: TDelFrate@waterboards.ca.gov; Robert McClellon [EH] Cc: Alvin Mangindin; Desi Reno; Gerald White; Joyesh Chandra; Jeff Anderson; Ken Evans; Richard C Stewart; Steve Rodarte; Steve Winkler; Dinah Bortner Subject: RE: SJ -580 & Corral Hollow Landfill Investigation Todd (and all), Attached is a map showing the extent of refuse in CalTrans property found by SJC County and Steve Rodarte of CalTrans in the investigation of Dec 26th. This image is best printed on 11x17 paper. Refuse was found within five feet of the toe of the on-ramp slope, so we show the approximate edge of closure cap extending to the toe of that ramp for much of the length of the investigation area, as we previously assumed. This investigation reduced the proposed closure area from 0.7 to 0.6 acres. We estimate that the cost to close over the refuse in CalTrans property will be $70,000 out of a total project of approximately $180,000 (preliminary estimates). Joyesh and Steve did not attempt to determine the thickness of the refuse when discovered, as the need for closure cap is a function of the extent, but not the thickness of refuse. Also attached is a figure summarizing the complex history of the acquisition of the parcels that now comprise the Corral Hollow Sanitary Landfill property. Lastly, I have attached a timeline showing the closure project, including compliance with regulatory requirements as we understand them as well as County procurement requirements for projects over $100,000. I thought this information would be useful in our meeting on Monday. Best regards, Mike Carroll W. Michael Carroll, PE Senior Civil Engineer, Stockton, CA 95205 Voice: 209-468-8504 Fax: 209-468-3078 Solid Waste Division 1810 E. Hazelton Ave. 1 Exnt of Refuse in Parcel Trace Rev CalTrans 12-... Jan 3 08 n Ti... FYI -----Original Message ----- From: Michael Carroll [mailto:mcarroll@sjgov.org] Sent: Thursday, January 03, 2008 1:40 PM To: TDelFrate@waterboards.ca.gov; Robert McClellon [EH] Cc: Alvin Mangindin; Desi Reno; Gerald White; Joyesh Chandra; Jeff Anderson; Ken Evans; Richard C Stewart; Steve Rodarte; Steve Winkler; Dinah Bortner Subject: RE: SJ -580 & Corral Hollow Landfill Investigation Todd (and all), Attached is a map showing the extent of refuse in CalTrans property found by SJC County and Steve Rodarte of CalTrans in the investigation of Dec 26th. This image is best printed on 11x17 paper. Refuse was found within five feet of the toe of the on-ramp slope, so we show the approximate edge of closure cap extending to the toe of that ramp for much of the length of the investigation area, as we previously assumed. This investigation reduced the proposed closure area from 0.7 to 0.6 acres. We estimate that the cost to close over the refuse in CalTrans property will be $70,000 out of a total project of approximately $180,000 (preliminary estimates). Joyesh and Steve did not attempt to determine the thickness of the refuse when discovered, as the need for closure cap is a function of the extent, but not the thickness of refuse. Also attached is a figure summarizing the complex history of the acquisition of the parcels that now comprise the Corral Hollow Sanitary Landfill property. Lastly, I have attached a timeline showing the closure project, including compliance with regulatory requirements as we understand them as well as County procurement requirements for projects over $100,000. I thought this information would be useful in our meeting on Monday. Best regards, Mike Carroll W. Michael Carroll, PE Senior Civil Engineer, Stockton, CA 95205 Voice: 209-468-8504 Fax: 209-468-3078 Solid Waste Division 1810 E. Hazelton Ave. 1