Corrective Action Investigation Plan for Corrective Action Unit 262: Area 25 Septic Systems and Underground Discharge Point, Nevada Test Site, Nevada, Revision No. 1 (9/2001)

Technical Report · Thu Jul 20 00:00:00 EDT 2000

DOI:https://doi.org/10.2172/775348· OSTI ID:775348

This corrective action investigation plan contains the U.S. Department of Energy, Nevada Operations Office's approach to collect data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 262 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 262 consists of nine Corrective Action Sites (CASs): Underground Storage Tank (25-02-06), Septic Systems A and B (25-04-06), Septic System (25-04-07), Leachfield (25-05-03), Leachfield (25-05-05), Leachfield (25-05-06), Radioactive Leachfield (25-05-08), Leachfield (25-05-12), and Dry Well (25-51-01). Situated in Area 25 at the Nevada Test Site (NTS), sites addressed by CAU 262 are located at the Reactor-Maintenance, Assembly, and Disassembly (R-MAD); Test Cell C; and Engine-Maintenance, Assembly, and Disassembly (E-MAD) facilities. The R-MAD, Test Cell C, and E-MAD facilities supported nuclear rocket reactor and engine testing as part of the Nuclear Rocket Development Station. The activities associated with the testing program were conducted between 1958 and 1973. Based on site history collected to support the Data Quality Objectives process, contaminants of potential concern (COPCs) for the site include oil/diesel-range total petroleum hydrocarbons, volatile organic compounds, semivolatile organic compounds, polychlorinated biphenyls, Resource Conservation and Recovery Act metals, and gamma-emitting radionuclides, isotopic uranium, isotopic plutonium, strontium-90, and tritium. The scope of the corrective action field investigation at the CAU will include the inspection of portions of the collection systems, sampling the contents of collection system features in situ of leachfield logging materials, surface soil sampling, collection of samples of soil underlying the base of inlet and outfall ends of septic tanks and outfall ends of diversion structures and distribution boxes, collection of soil samples from biased or a combination of biased and random locations within the boundaries of the leachfields, collection of soil samples at stepout locations (where needed) to further define lateral and vertical extent of contamination, conduction of discrete field screening, and logging of soil borings and collection of geotechnical samples to assess soil characteristics. Historical information indicates that significant quantities of radioactive material were produced during the rocket engine testing program, some of which was disposed of in radioactive waste disposal systems (posted leachfields) at each of these locations. Process and sanitary effluents were generated and disposed of in other leachfields. The results of this field investigation will be used to develop and evaluate corrective action alternatives for these CASs.

• Research Organization: IT Corp., Las Vegas, NV (US)
• Sponsoring Organization: USDOE, Nevada Operations Office (US)
• DOE Contract Number: AC08-97NV13052
• OSTI ID: 775348
• Report Number(s): DOE/NV--629-REV 1
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
25-02-06
25-04-06
25-04-07
25-05-03
25-05-05
25-05-06
25-05-08
25-05-12
25-51-01
33 ADVANCED PROPULSION SYSTEMS
54 ENVIRONMENTAL SCIENCES
AREA 25
CAS
CAU 262
CORRECTIVE ACTION SITES
CORRECTIVE ACTION UNIT
DRY WELL
FEDERAL FACILITY AGREEMENT AND CONSENT ORDER
LEACHFIELD
NEVADA TEST SITE
NTS.
ORGANIC COMPOUNDS
POLYCHLORINATED BIPHENYLS
RADIOACTIVE LEACHFIELD
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOISOTOPES
REACTOR MAINTENANCE
RESOURCE CONSERVATION
ROCKET ENGINES
SEPTIC SYSTEM
SEPTIC SYSTEMS A AND B
STRONTIUM 90
UNDERGROUND STORAGE
UNDERGROUND STORAGE TANK