After a decade of development activities from 1983 to 1993, the 2.5-ha (6.2-acre) Prototype Hanford Barrier (PHB) was constructed between late 1993 and 1994 over the 216-B-57 Crib in the 200 East Area (46°34’01.23”N, 119°32’28.43”W) at the Hanford Site in southeastern Washington State. The PHB construction was part of a Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) treatability test of barrier performance for the 200-BP-1 Operable Unit. The CERCLA treatability test was an enhanced precipitation stress test from water year 1995 (WY95) to WY97 to determine barrier response to extreme precipitation events. A controlled fire test was conducted in 2008 to examine the recovery of vegetation under the natural condition and the performance of the barrier with limited vegetation
Revised: December 26, 2018 |
Published: September 30, 2018