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Www.energy.gov/EM 1 Los Alamos National Laboratory (LANL) Office of Environmental Management REMAINING CLEANUP OVERVIEW David S. Rhodes Acquisition Integrated.

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Presentation on theme: "Www.energy.gov/EM 1 Los Alamos National Laboratory (LANL) Office of Environmental Management REMAINING CLEANUP OVERVIEW David S. Rhodes Acquisition Integrated."— Presentation transcript:

1 1 Los Alamos National Laboratory (LANL) Office of Environmental Management REMAINING CLEANUP OVERVIEW David S. Rhodes Acquisition Integrated Project Team Chair Environmental Management Los Alamos Field Office March 3, 2015

2 2 LANL Site Approximately 36 square miles Located on the Pajarito Plateau in Los Alamos County, ~60 miles NE of Albuquerque and ~25 miles NW of Santa Fe Plateau dissected by nineteen major surface drainages or canyons and their tributaries running roughly west to east or southeast and drain into the Rio Grande

3 3 Pajarito Plateau

4 4 Site Map

5 5 LANL Site Four discrete hydrogeologic zones Canyon alluvial systems Intermediate perched water in the volcanic rocks (Tschicome Formation and the Tshirege Member of the Bandelier Tuff) Canyon-specific intermediate perched within the Otowi Member of the Bandelier Tuff, Cerros del Rio basalt and sedimentary units of the Puye Formation Regional aquifer.

6 6 LANL Site

7 7 LANL Site History 1943 – United States Army Manhattan Engineering District 1980 – LANL submitted Part A RCRA permit application to U.S. Environmental Protection Agency (EPA) 1985 – State of New Mexico received EPA authorization to implement State hazardous waste program 1989 – State issues Hazardous Waste Facility permit to LANL Late 1980s – LANL provided Potential Release Sites list 1996 – State of New Mexico receives EPA authorization to implement its corrective action program – LANL submitted General Part B permit renewal application for permitted and interim status units

8 8 Regulatory Drivers Compliance Order on Consent DOE intends to apply Resource Conservation and Recovery Act (RCRA) processes under State of New Mexico Environment Department (NMED) regulatory authority as a contact provision Individual Permit for Storm Water (IP) EPA Permit renewal in-progress to remove sites already completed NMED Certification will provide additional provisions DOE Radiological Regulatory Authority under Atomic Energy Act Several cleanup areas are strictly driven by radiological constituents Other Environmental Permits Air emissions, Discharge, etc.

9 9 Major Milestones Remaining for Program DOE developing Federal life-cycle baseline to establish internal schedules This will be used to establish new baselines for work, proposed changes to regulatory agreements, and contracted work scopes Compliance Order on Consent Deliverables Individual Permit for Stormwater

10 10 Elements of Scope Transuranic Waste Disposition Groundwater and Surface Water Aggregate Areas Material Disposal Areas (MDA) Decontamination and Decommissioning (D&D) Project Management, Support, and Integration Site Infrastructure (EM Areas only)

11 11 Transuranic Waste Disposition I. Contact-Handled (CH)-TRU Safe storage of above-grade TRU including continued isolation, surveillances and regular monitoring, and maintenance of controls and an appropriate safety basis Implementation of corrective actions as needed resulting from investigations and additional sampling Characterize, package and shipment of TRU Planning for and retrieval of the below-grade CH-TRU for processing II. Remote-Handled (RH)-TRU Develop safety handling strategies, project plans, and baselines for retrieval of that buried RH-TRU that must be extracted, packaged, and processed Design and build facilities for the safe processing of the RH-TRU Retrieve buried RH-TRU that must be exhumed, characterize, package and ship. III. Associated Waste Management Process and dispose of Low-Level Radioactive Waste (LLW)/Mixed LLW resulting from Legacy TRU waste process operations including tracking of wastes, RCRA inspections, Department of Transportation (DOT) compliant shipping using DOE’s national treatment and disposal contracts. Coordination of the processing of Newly-Generated LANL TRU Wastes from NNSA management and operating (M&O) contractor facilities through the TA-54 process lines until generator facilities have their own characterization, packaging, and shipment capabilities

12 12 Transuranic Waste Disposition

13 13 Groundwater and Surface Water I. Interim Facility-Wide Groundwater Monitoring Plan Planning in coordination with NNSA M&O in response to NMED Hazardous Waste Bureau (HWB) direction on frequencies, analyts, and locations/screens Sampling, packaging, and shipping groundwater samples to analytical laboratories and receiving results, reviewing, and publishing results Reporting results to NMED-HWB II. Surface Water Protection Monitoring Planning and strategizing surface water compliance in accordance with the EPA-issued Individual Permit for Storm Water Collecting samples, packaging, and shipping samples to analytical laboratories and receiving results, reviewing, and publishing results Installation and maintenance of stormwater controls, comparison to background concentrations, and evaluation of alternatives III. Hexavalent Chromium Plume in Mortandad Canyon Conducting plume control interim measures to prevent off-site migration Supporting NMED-HWB consideration of alternatives and NMED-HWB development of a draft Statement of Basis for a remedy Execution of the selected remedy (possibly as a capital asset project)

14 14 Groundwater and Surface Water IV. RDX High Explosive Plume in Canon de Valle Surface water corrective actions to address soil contaminant impacts Subsurface evaluation and studies include cross-hole pump testing and considerations of remedy alternatives and supporting NMED-HWB drafting of a Statement of basis for a remedy Execution of NMED-HWB directed remedy actions V. Surface Water Boundary Protection Evaluation of watersheds for contaminant migration off-site and redistribution of stormwater sediment transport with the associated installation of appropriate stormwater controls (beyond requirements of IP for Stormwater VI. Vadose Zone Gas or Moisture Monitoring Continuation of soil vapor extraction at MDA-L, pore-gas monitoring at MDA-C, and moisture monitoring at MDA-T VII. Wells and Boreholes Installation of wells and boreholes, maintenance of the equipment and pads, and plugging and abandoning unnecessary locations

15 15 Aggregate Areas I. Townsite Historical Properties Completion of cleanups of historical sites now under private ownership, commercial enterprises, or by the County of Los Alamos II. Remaining Aggregate Area Investigations Completion of approximately ten aggregate areas and obtaining certificates of completion (CoC) from NMED- HWB Completion of aggregate area investigations and field cleanups that are in-progress and obtaining CoCs from NMED-HWB Initiate and complete investigations and cleanups in ten aggregate areas that have not been initially assessed III. Risk Assessments and Evaluations Conducting risk assessments on already characterized or investigated areas to recent NMED-HWB guidance to obtain CoCs IV. Field Cleanups Removal of known contaminants and identification of additional removals from subsequent investigations

16 16 Material Disposal Areas I. MDA-A at TA-21 Complete a removal action of two 50,000 gallon plutonium solution (General’s )Tanks with sludge heels The removal action could be relatively near-term (3-4 years) Complete investigation and evaluate alternatives of central debris pit and waste trenches, support NMED development of a Statement of Basis for a remedy Execute the remedy (following NMED selection); options range from engineered cover to excavation II. MDA-C Support NMED development of a Statement of Basis for a remedy Execute the remedy (following NMED selection); options range from engineered cover to excavation This might be appropriate for a near-term capital asset project III. MDAs-G, -H, and L at TA-54 Support NMED development of a Statement of Basis for each of three potential remedy Execute the remedy (following NMED selection); options range from engineered cover to excavation Areas L and G possibly include Soil-Vapor Extraction (SVE) for subsurface volatile organic chemical plume

17 17 Material Disposal Areas IV. MDA-T at TA-21 Complete investigation and evaluate alternatives of central debris pit and waste trenches, support NMED development of a Statement of Basis for a remedy Execute the remedy (following NMED selection); options range from engineered cover to excavation Expected to remain under Federal control indefinitely V. MDA-AB at TA-49 Complete investigation and evaluate alternatives of central debris pit and waste trenches, support NMED development of a Statement of Basis for a remedy Execute the remedy (following NMED selection); options range from engineered cover to excavation

18 18 Material Disposal Area C

19 19 Decontamination and Decommissioning I. TA-21 (4 total) Isolated from rest of LANL Nearest Town and populous Warehouse 286 Sanitary Waste Water Facility 227, 228, 229, 230 DP West Slabs Radiological Liquid Waste Facility 257 II. MDA-L (8 total) Soil Vapor Extraction continues on VOC plume under asphalt Several domed buildings Several carports Ancillary structures III. MDA-G (~80 total) Many contingent on TRU operations and RCRA pad closures Multiple domed facilities Several hard-walled structures Multiple ancillary structures

20 20 Project Management, Support, and Integration I. Planning and work control Supporting detailed work planning for the work scope and supporting DOE in preparation of budget requests, annual work plans and spend plans, reporting progress against baselines, and planning for subcontracting work Development and execution of successful strategies and addressing technical issues through regulator interactions Maintaining work control systems and processes to assure the safety of workers, the public, and the environment II. Document control and records Complying with DOE document control and records requirements including electronic public reading rooms, electronic database of environmental sampling including public access III. Safety processes Utilization of Integrated Safety Management Systems (ISMS), integration of nuclear safety requirements, metrics and statistics, etc. to ensure the safety of the workers, the public, and the environment

21 21 Site Infrastructure (EM Areas Only) I. EM Infrastructure Limited EM facility ownership but more equipment responsibilities Monitoring well infrastructure, etc. Gage station and sample equipment maintenance Treatment systems such as for chromium Limited access roads to EM structures II. Maintain and Operate Facility maintenance for safe conditions where demolition is planned (TA-21) Facility maintenance for operations for TRU structures (drum and box-lines) (TA-50 and TA-54)

22 22 Issues and Challenges Interdependencies and Interfaces Interfaces with the NNSA M&O for access, utilities, and other functional services as per the agreement between EM and NNSA. Interfaces between multiple contractors Scope is Broad and Geographically Dispersed Many of the sites are in the NNSA operating envelop and cleanup must be done in a manner that does not impact NNSA mission operations Access to many sites can be from outside the Laboratory instead of through the Laboratory


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