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Crescent Valley High School Upper Gym Closed

Portions of the gymnasium at Crescent Valley High School are closed through the end of next week for thorough cleaning of construction debris due to a roof replacement project.

2G Construction crews have been working 24 hours a day since June 21 to replace 250,000 square feet of roof spanning multiple buildings at the high school campus. This was the first replacement of this facility’s roof since it was opened to students in 1971.

Prior to removal of the roof the Corvallis School District conducted testing, which indicated asbestos was present in some of the roofing felts and tar. As such, contract documents, work plans, and proactive air and bulk debris testing were integrated into the scope of the project.

PBS Engineering and Environmental Inc., a Portland, Ore. based firm, has provided health and safety management consulting to ensure project safety. As of September 14, 2012, more than 50 air samples were collected and analyzed for asbestos. Based on the air sample analytical results, none of the samples have exceeded the OSHA permissible exposure limit for asbestos of 0.1 fibers per cubic centimeter (f/cc), or the more stringent EPA/AHERA post-abatement air clearance level of 0.01 f/cc. Based on these air monitoring results, PBS identified no risk of asbestos exposure above the permissible exposure limit due to roofing debris infiltration into the building.

Earlier this week, a small amount of roofing debris was noted on the upper floor of the gymnasium. Laboratory analysis indicated that asbestos was present. Based on the amount of debris observed in the building, PBS recommended a thorough cleaning of the building by trained asbestos abatement workers. The building was closed and ATEZ Inc. of Harrisburg, Oregon, an Oregon Department of Environmental Quality certified asbestos abatement contractor, commenced the cleaning on September 13, 2012.

Cleaning of the lower level of the gymnasium building was completed Thursday, September 13. Subsequent ambient air testing met all EPA/AHERA and OSHA regulations for safe occupancy of the building. At 9:00 a.m. today, that portion of the building was deemed safe for occupancy and was reopened to students and staff.

Out of an abundance of caution, PBS has recommended that access to the upper floor of the gymnasium remain closed to non-essential cleaning personnel. The district will re-open the building completely after final ambient air testing determines it is safe for occupancy. 
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