Corrective Action Decision Document for Corrective Action Unit 428: Area 3 Septic Waste Systems 1 and 5, Tonopah Test Range, Nevada
This Corrective Action Decision Document identifies and rationalizes the US Department of Energy, Nevada Operations Office's selection of a recommended corrective action alternative (CAA) appropriate to facilitate the closure of Corrective Action Unit (CAU) 428, Septic Waste Systems 1 and 5, under the Federal Facility Agreement and Consent Order. Located in Area 3 at the Tonopah Test Range (TTR) in Nevada, CAU 428 is comprised of two Corrective Action Sites (CASs): (1) CAS 03-05-002-SW01, Septic Waste System 1 and (2) CAS 03-05-002- SW05, Septic Waste System 5. A corrective action investigation performed in 1999 detected analyte concentrations that exceeded preliminary action levels; specifically, contaminants of concern (COCs) included benzo(a) pyrene in a septic tank integrity sample associated with Septic Tank 33-1A of Septic Waste System 1, and arsenic in a soil sample associated with Septic Waste System 5. During this investigation, three Corrective Action Objectives (CAOs) were identified to prevent or mitigate exposure to contents of the septic tanks and distribution box, to subsurface soil containing COCs, and the spread of COCs beyond the CAU. Based on these CAOs, a review of existing data, future use, and current operations in Area 3 of the TTR, three CAAs were developed for consideration: Alternative 1 - No Further Action; Alternative 2 - Closure in Place with Administrative Controls; and Alternative 3 - Clean Closure by Excavation and Disposal. These alternatives were evaluated based on four general corrective action standards and five remedy selection decision factors. Based on the results of the evaluation, the preferred CAA was Alternative 3. This alternative meets all applicable state and federal regulations for closure of the site and will eliminate potential future exposure pathways to the contaminated soils at the Area 3 Septic Waste Systems 1 and 5.
- Research Organization:
- IT Corp., Las Vegas, NV (US)
- Sponsoring Organization:
- USDOE Nevada Operations Office (US)
- DOE Contract Number:
- AC08-97NV13052
- OSTI ID:
- 760451
- Report Number(s):
- DOE/NV-587; TRN: AH200118%%500
- Resource Relation:
- Other Information: PBD: 8 Feb 2000
- Country of Publication:
- United States
- Language:
- English
Similar Records
Corrective Action Investigation Plan for Corrective Action Unit 428: Area 3 Septic Waste Systems 1 and 5, Tonopah Test Range, Nevada, REVISION 0, march 1999
Corrective Action Investigation Plan for Corrective Action Unit 428: Area 3 Septic Waste Systems 1 and 5, Tonopah Test Range, Nevada, REVISION 0, march 1999
Related Subjects
54 ENVIRONMENTAL SCIENCES
ARSENIC
DISTRIBUTION
EXCAVATION
ORDERS
PYRENE
REGULATIONS
SOILS
TANKS
TONOPAH TEST RANGE
WASTES
CORRECTIVE ACTION DECISION DOCUMENT
CORRECTIVE ACTION UNIT
428
AREA 3 SEPTIC WASTE SYSTEMS 1 AND 5
CADD
CAU
CAA
TTR
COC
CAO.