Monitoring Well Closure / Destruction

RMC Consultants Inc., Lakewood, Colo., just outside of Denver, was contracted by the U.S. Army Corps of Engineers (USACE) to decommission monitoring wells. The nearly 20-year-old firm conducted the monitoring well closure activities at the former Atlas "E" Missile Site 9 located in Hereford, Colo. The primary purpose of this investigation was to purge and sample five existing ground water monitoring wells to confirm that ground water impacts are below regulatory standards, and perform subsequent well decommissioning activities.

Site 9 is located approximately 6 miles southeast of Hereford, Colo. in northern Weld County. The original site consisted of 16.82 acres fee and easements, which were part of 245.6 acres of land that was acquired by purchase or condemnation between 1959 and 1961. The site was one of nine Atlas "E" missile sites operated by the U.S. Air Force under the 549th Strategic Missile Squadron at F.E. Warren AFB, Cheyenne, Wyo.

The firm was contracted to perform low-flow purging and sampling of five monitoring wells, provide an assessment of data validity and comparison of analytical results to regulatory standards, perform well-decommissioning activities, and manage the investigation-derived wastes. In addition, RMC prepared a final report for USACE review and approval.

In accordance with USACE requirements, all project objectives were achieved, and as such RMC recommended no further action at Missile Site 9.

For more information on the firm and its activities, visit the company's Web http://www.nationaldriller.com
www.rmc-consultants.com.

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