The 100-C-7 Remediation Project. An Overview of One of DOE's Largest Remediation Projects - 13260
- U.S. Department of Energy Richland Operations Office, Richland, WA 99352 (United States)
- Washington Closure Hanford LLC, 2620 Fermi Avenue, Richland, WA 99354 (United States)
- U.S. Environmental Protection Agency, 309 Bradley Boulevard, Suite 115, Richland, WA 99352 (United States)
The U.S. Department of Energy Richland Operations Office (RL), U.S. Environmental Protection Agency (EPA) and Washington Closure Hanford LLC (WCH) completed remediation of one of the largest waste sites in the U.S. Department of Energy complex. The waste site, 100-C-7, covers approximately 15 football fields and was excavated to a depth of 85 feet (groundwater). The project team removed a total of 2.3 million tons of clean and contaminated soil, concrete debris, and scrap metal. 100-C-7 lies in Hanford's 100 B/C Area, home to historic B and C Reactors. The waste site was excavated in two parts as 100-C-7 and 100-C-7:1. The pair of excavations appear like pit mines. Mining engineers were hired to design their tiered sides, with safety benches every 17 feet and service ramps which allowed equipment access to the bottom of the excavations. The overall cleanup project was conducted over a span of almost 10 years. A variety of site characterization, excavation, load-out and sampling methodologies were employed at various stages of remediation. Alternative technologies were screened and evaluated during the project. A new method for cost effectively treating soils was implemented - resulting in significant cost savings. Additional opportunities for minimizing waste streams and recycling were identified and effectively implemented by the project team. During the final phase of cleanup the project team applied lessons learned throughout the entire project to address the final, remaining source of chromium contamination. The C-7 cleanup now serves as a model for remediating extensive deep zone contamination sites at Hanford. (authors)
- Research Organization:
- WM Symposia, 1628 E. Southern Avenue, Suite 9-332, Tempe, AZ 85282 (United States)
- OSTI ID:
- 22225001
- Report Number(s):
- INIS-US-13-WM-13260; TRN: US14V0453045956
- Resource Relation:
- Conference: WM2013: Waste Management Conference: International collaboration and continuous improvement, Phoenix, AZ (United States), 24-28 Feb 2013; Other Information: Country of input: France; 2 refs.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observational Approach to Chromium Site Remediation - 13266
Composite Analysis for Low-Level Waste Disposal in the Hanford Site Central Plateau (FY 2020) (Rev. 2)
Related Subjects
54 ENVIRONMENTAL SCIENCES
C REACTOR
CHROMIUM
CONCRETES
CONTAMINATION
ENERGY PARKS
EXCAVATION
GROUND WATER
MINES
MINING
RECYCLING
REMEDIAL ACTION
RICHLAND
SCRAP METALS
SITE CHARACTERIZATION
SOILS
STREAMS
US DOE FIELD OFFICES
US EPA