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05!18/2006 10:17 8015242878 SINCLAIR ENGINEERING PAGE 02/13 <br />Si~rtlafr <br />..1~ <br />Water Quality Control Division May 11, 2D08 <br />Engineering Section <br />4300 Cherry Creek Drive South <br />Denver CO 80246-1530 <br />To whom lY may concern: <br />Sinclair Transportation Company experienced a release of product from ks <br />Medicine Bow Pipeline on May 8th, 2006. The release occurred In the NE Y. of Section <br />17, Township 2 South, Range 67 West, Adams County. This location Is Just south of <br />104"' Avenue, on the west side of the South Platte River. The release was caused by an <br />attempied tap of our plpeAne by an unknown third party. This attempted tap caused a'iG" <br />long hairline crack of the pipe body. Thi; leaking pipe was discovered during a scheduled <br />relocation project by Sinctair's maintenance crews, <br />It is unknown at this time how long the pipeline had been leaking. The leak was <br />characterized as a fine mist of gasoline. The pipeline transports finished petroleum <br />products, primarily gaselfne, aRhough some diesel fuel has been shipped over the years, <br />The leak was discovered on May 9"' at 2:45 p.m. It was reported tv the CDPHE <br />Spill Reporting Hotline at 3:42 p.m. (incident number 2006-411). <br />Following discovery, the block valve located just 25' north of the leaking pipe was <br />closed. The pipeline was not operating at the time - it had been shutdown on May 4'" as <br />per the pipeline schedule. The motor operated valve at Sinclair's Terminal, located on <br />96~' Avenue, was opened by the Sinclair control center to relieve any pressure on the <br />line. A vacuum truck was dispatched to the scene and approximately 800 gallons of <br />gasoline was removed form the pipeline at the block valve. This eliminated any more <br />product from escaping from the pipeline. During this drain in procedure the leaking <br />gasoline was contained by absorbent pads. <br />Approximately 110 cubic yards of contaminated soil was removed from the <br />immediate area around the leak site and temporarily stored on plastic. This soli was <br />sampled and testing is ongoing so that disposal of the soil can be arranged. No product <br />reached the South Platte River. No contaminated soil was observetl more than 2 feet <br />above the pipe. The pipe was buried to a depth of 5'. <br />Sinc/airPipeiine Company <br />P.O. 110X 185, SIM:LAIR. WF'C1M11FG 32134 307/.124-26,'.f PAX af17112p-)~ it <br />