Corrective Action Decision Document for Corrective Action Unit 127: Areas 25 and 26 Storage Tanks, Nevada Test Site, Nevada: Revision 0

Technical Report · Fri Sep 26 04:00:00 EDT 2003

DOI:https://doi.org/10.2172/820538· OSTI ID:820538

This Corrective Action Decision Document identifies and rationalizes the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office's selection of recommended corrective action alternatives (CAAs) appropriate to facilitate the closure of Corrective Action Unit (CAU) 127: Areas 25 and 26 Storage Tanks, Nevada Test Site, Nevada, under the Federal Facility Agreement and Consent Order. Corrective Action Unit 127 consists of twelve corrective action sites (CASs). Corrective action investigation (CAI) activities were performed from February 24, 2003, through May 2, 2003, with additional sampling conducted on June 6, 2003, June 9, 2003, and June 24, 2003. Analytes detected during these investigation activities were evaluated against preliminary action levels to identify contaminants of concern (COCs) for each CAS, resulting in the determination that only two of the CASs did not have COCs exceeding regulatory levels. Based on the evaluation of analytical data from the CAI, review of future and current operations in Areas 25 and 26 of the Nevada Test Site, and the detailed and comparative analysis of the potential CAAs, the following alternatives were developed for consideration: (1) No Further Action is the preferred corrective action for the two CASs (25-02-13, 26-02-01) identified with no COCs; (2) Clean Closure is the preferred corrective action for eight of the CASs (25-01-05, 25-23-11, 25-12-01, 25-01-06, 26-01-01, 26-01-02, 26-99-01, 26-23-01); and (3) Closure in Place is the preferred corrective action for the remaining two CASs (25-01-07, 25-02-02). These three alternatives were judged to meet all requirements for the technical components evaluated. Additionally, these alternatives meet all applicable state and federal regulations for closure of the sites at CAU 127 and will reduce potential future exposure pathways to the contaminated media.

• Research Organization: Stoller-Navarro Joint Venture; Nevada Test Site, Mercury, NV (US)
• Sponsoring Organization: USDOE Office of Environmental Management (EM) (US)
• DOE Contract Number: AC08-97NV13052
• OSTI ID: 820538
• Report Number(s): DOE/NV--925
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AREA 25
AREA 26
CADD
CAS 25-01-05
CAS 25-01-06
CAS 25-01-07
CAS 25-02-02
CAS 25-02-13
CAS 25-12-01
CAS 25-23-11
CAS 26-01-01
CAS 26-01-02
CAS 26-02-01
CAS 26-23-01
CAS 26-99-01
CAU 127
CLOSURES
EVALUATION
FFACO
NEVADA TEST SITE
NTS
ORDERS
REGULATIONS
SAMPLING
SECURITY
STORAGE
STORAGE TANKS
TANKS