Exhibit_D_TA-21_DP_West_Slabs_(FINAL).pdf

Exhibit D SOW Rev 0 March 2, 2019

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EXHIBIT "D"

STATEMENT OF WORK AND TECHNICAL SPECIFICATIONS

TA-21 DP West Slabs D&D and Remediation Project

1.0 PROJECT SCOPE OF WORK / BACKGROUND, GOALS AND OBJECTIVES

This statement of work (SOW) establishes the scope for the SUBCONTRACTOR responsible for providing the technical functions, innovative methods and expertise necessary for the effective and timely delivery of products to the CONTRACTOR, Newport News Nuclear BWXT Los Alamos, LLC. (N3B) Environmental Remediation (ER) Program. SUBCONTRACTOR must have in place the required and functioning management, technical and administrative infrastructure to complete all objectives and provide successful coordination with N3B personnel. SUBCONTRACTOR shall perform all work requirements in accordance with the subcontract documents, New Mexico Environment Department (NMED), and U.S. Department of Energy (DOE) policies and directives as specified herein.

In the performance of this SOW, SUBCONTRACTOR shall comply with all applicable laws, DOE orders, CONTRACTOR performance requirements, CONTRACTOR implementation requirements, N3B requirements, the State of New Mexico Environmental Department Compliance Order on Consent (hereafter, the Consent Order), and CONTRACTOR Conduct of Operations. Quality requirements as stated in Exhibit H, safety requirements in Exhibit F, the integrated work document/management process, Exhibit A Contract Flow-Down Clauses, Exhibit B, General Conditions, Exhibit C schedule of pricing and cost data, Exhibit G security, Exhibit I submittals, Exhibit J Insurance, Exhibit K wage determinations, and the requirements shall be adhered to as specified herein.

SUBCONTRACTOR shall furnish qualified management, personnel, equipment, materials, supplies and facilities to perform, as detailed in this Exhibit D, all work necessary to execute this statement of work as required by or reasonably inferable from the Subcontract documents. The goal is to complete Deactivation & Decommissioning (D&D) activities at Technical Area 21 (TA-21), including abatement of hazardous materials, completion of site characterization, sampling, investigation reporting and remediation of remaining facilities, structures, industrial waste lines and removal of contaminated soils.

The overall broad site disposition will contribute to the complete removal of legacy infrastructure and contaminants within the designated TA-21 site boundary for the Los Alamos County Land Transfer Agreement.

The work package comprised of this procurement includes, but is not limited to; Sampling, characterization, D&D, asbestos, universal waste and hazardous materials abatement, decontamination, demolition, size reduction, segregating, loading and packaging concrete slabs of the former DP West Plutonium facility from former buildings 21-002, 21-003, 21-004, 21-005, hallway east of 21-210, 21-116, 21-149, 21-150, 21-312, 21-313, 21-314, 21-315, 21-328, and 21-458. The SUBCONTRACTOR will also be required to locate, excavate, remove, size reduce, package and load the DP West asbestos piping and radiological industrial waste lines (~ 2,500 LF) from utility chases/tunnels from former buildings 21-002, 21-003 and 21-004, 21-005, 21-149 and 21-150. Perform investigative soils characterization, sampling, excavation, remediation, packaging, loading, staging of contaminated soils and site backfill and restoration; investigation/remediation of Solid Waste Management Units (SWMU’s) and Areas of Concern (AOC’s). Investigation report development, writing and approval for SWMU 21-022(i) and AOC C-21-006 as instructed in the Investigation Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1, DP West Building 21-002 Footprint Letter Work Plan and Field Implementation Plan (FIP) for DP Site

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Aggregate Area Investigation of AOC-C-21-006. In addition to executing these Work Plans, SUBCONTRACTOR shall perform any nature and extent and characterization sampling (in coordination with the N3B Waste Management Coordinator(WMC)), soil and structure remediation, waste characterization and packaging, human health and ecological risk assessments, and Investigation Report development necessary to meet Consent Order requirements.

In addition to performing the work prescribed in the work plans, Exhibit D and accompanying documents, the SUBCONTRACTOR shall evaluate the analytical data collected from the DP West Slabs soils and make recommendations if additional sampling and/or remediation are required to complete characterization of the sites. SUBCONTRACTOR shall present the findings and recommendations for the AOC and SWMU to the CONTRACTOR in peer review meetings.

Following the data decision peer review meeting, SUBCONTRACTOR shall plan for and perform the additional characterization sampling and/or remediation, waste packaging and sampling, and human health and ecological risk assessments necessary to complete characterization of the AOC and SWMU.

SUBCONTRACTOR shall prepare the Investigation Reports (IR) and comment resolution necessary to meet Consent Order requirements and deliverable deadlines. A Final Project Closeout Report shall be completed for the entire project and submitted 15 working days after completion of field work. Field work shall not be scheduled during the LANL holiday closure or any other observed holidays.

Activities to support on-going work includes demarcating and establishing work area boundaries, storm water pollution prevention controls utilization and final site stabilization. SUBCONTRACTOR shall not be relieved of performing the details of any work, manifestly or customarily performed to carry out the intent of this subcontract. All work shall be performed fully and correctly as set forth and described in the subcontract which is outlined in detail in section 1.1 “Work Scope”, and Appendices:

• D-1 Photos

• D-2 Drawings

• D-3 Characterization/Survey Reports

• D-4 GIS Utility & Infrastructure Maps

• D-5 Storm Water Pollution Prevention Plan (SWPPP)

• D-6 Waste Characterization Strategy Form (WCSF)

• D-7 Training Requirements Matrix

• D-8 Investigation Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1, DP

West Building 21-002 Footprint Letter Work Plan, Field Implementation Plan for DP Site Aggregate Area Investigation of AOC-C-21-006 and DP West Site History and Past Decontamination Efforts document

• D-9 Energy Solutions Clive Facility “Waste Acceptance Criteria“(WAC)

• D-10 N3B - DIR Standard Operating Procedures

• D-11 New Mexico Environmental Departments Compliance Order on Consent

• D-12 Supplemental Investigation Report for Threemile Canyon Aggregate Area, Revision 1, July

2018 Reporting Template/Example

• D-13 Request for Information (RFI) form

• D-14 Subcontractor Deviation Disposition Request form

• D-15 Excavation Identification (EXID) Permit

• D-16 Assessment Guidance for Site Investigations and Remediation (02/2012, updated 06/2012)

• D-17 Earth Moving Specification listed in this document.

• D-18 Site Cleanup Items

BACKGROUND - TA-21 DP West

TA-21 is located on DP Mesa (a.k.a. “townsite” mesa) on the northern boundary of the Los Alamos National Laboratory and is immediately east-southeast of the Los Alamos town site. DP West operations

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began in September of 1945, primarily to produce metal and alloys of plutonium from the nitrate solution feedstock provided by other production facilities, as well as nuclear fuel reprocessing. This procedure involved several acid dissolution and chemical precipitation steps to separate the plutonium and other valuable actinides from the feedstock. Footprint for DP West concrete slabs is approximately 57,000 square feet.

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BASE SCOPE

1.1 Work Included

1.1.1 SUBCONTRACTOR shall be responsible for sampling, prior to the start of any field activities and throughout the project, as necessary, for occupational worker safety and health, Industrial Hygiene (IH) and worker protection per Exhibit F and for waste characterization in accordance with the SUBCONTRACTOR provided project specific Sample and Analysis Plan (SAP). SUBCONTRACTOR shall have a licensed and certified electrician verify utilities cold/dark status for the worksite.

SUBCONTRACTOR shall characterize, in accordance with an acceptable, documented EPA method (e.g. EPA SW 846) wastes to be generated from former buildings TA-21-002, 21-003, 21-004, 21-005, hallway east of 21-210, 21- 0116, 21-149, 21-150, 21-312, 21-313, 21-314, 21-315, 21-328, and 21-458 and associated steam lines, radiological liquid waste lines (RLW), standing water and systems. Characterization shall be representative of all wastes to be generated.

(see Exhibit F and appendix D-6 WCSF)

1.1.1.1 Prior to demolition, SUBCONTRACTOR shall perform a comprehensive radiological characterization of the interiors of utility tunnels of former buildings 21-002, 21-005 and the remaining corridor tunnel portions of 21-003 and 21-004. SUBCONTRACTOR method must accomplish this characterization while protecting the tunnels and surrounding areas from radiological exposure and/or the elements in case high levels of contamination are discovered in the tunnels. The characterization shall include dose rate surveys, lose and fixed contamination surveys (i.e., beta, gamma, and alpha), and airborne contamination sampling. All accessible tunnel floors (i.e., soil) should be characterized. The characterization shall be performed by either coring/cutting through the tunnel ceilings (12” diameter minimum), or by remote/robotic instrumentation means. Controls shall be in place to ensure concrete and other items do not drop into the tunnels damaging piping systems.

Since loose radiological contamination is likely in the utility tunnels, SUBCONTRACTOR shall utilize negative pressure, weather controls and/or any appropriate radiological controls during this characterization effort based on method.

1.1.1.2 Prior to demolition of the utility tunnels, SUBCONTRACTOR shall remediate contaminated soils from the utility tunnels and place into CONTRACTOR supplied containers. SUBCONTRACTOR to expect 50% of utility tunnel soil to a depth of two (2) feet will need to be remediated and containerized.

1.1.1.3 Prior to demolition, SUBCONTRACTOR shall complete DP West waste characterization per SUBCONTRACTOR SAP (CONTRACTOR will approve SAP prior to Readiness Review). SUBCONTRACTOR shall perform concrete coring/cutting and removal in the basements of 21-005 and 21-150 for accessibility to perform nature and extent soils sampling per appendix D-4, GIS Utility & Infrastructure Maps - map #2. SUBCONTRACTOR shall sample 0.0-1.0 and 2.0-3.0 feet under the basement slabs. If further depths are required to determine “Nature and

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Extent” for Industrial and Construction Worker Soil Screening Levels (SSLs) and Soil Action Levels (SALs), notify the Field Execution Technical Lead (FETL).

1.1.2 SUBCONTRACTOR shall perform asbestos and hazardous materials characterization and abatement per applicable regulations prior to demolition of the structures. SUBCONTRACTOR shall remove, load and package asbestos piping into CONTRACTOR supplied containers. Assume 500 linear feet of asbestos piping, 6 inches in diameter. If un-containerized liquids are discovered, then manage per appendix D-6 WCSF, waste stream #11. (see appendix D-3 Survey Reports and Exhibit F)

1.1.3 SUBCONTRACTOR will excavate, stabilize, size reduce, remove, load and package into CONTRACTOR furnished containers RLW lines. Assume 2,000 linear feet of RLW lines ranging from 1.5 to 6 inches in diameter. (see appendices D-4 GIS Utility & Infrastructure Maps and D-8 Work Plans)

1.1.4 SUBCONTRACTOR shall, demolish to a depth of 10 feet below grade surface, raze, size reduce (in accordance with the Waste Acceptance Criteria), segregate (by waste stream), load and package into CONTRACTOR provided containers DP West slabs and all associated asphalt, stem walls, footers, columns, appurtenances, utilities, RLW lines, sumps/vaults (NE corners of 21-002, 21-005 and 21-150), stairwells, stoops, decks, docks and sidewalks from former buildings TA-21-002, 21-003, 21-004, 21-005, hallway east of 21-210, 21-116, 21-149, 21-150, 21-312, 21-313, 21-314, 21-315, 21-328, 21-458, SWMU 21-

022(i) and AOC C-21-006.

1.1.4.1 SUBCONTRACTOR shall remove in their entirety (>10 ft.); equipment room 2B, including associated pit/sump of former building 21-002, and rooms 176 and 178 north of former building 21-116.

1.1.4.2 SUBCONTRACTOR shall stabilize the sections of RLW pipe to be cut with InstaCote CC PS413 or Autopour ™, or FETL approved industry equivalent, to reduce contamination risk while size reducing.

SUBCONTRACTOR shall inspect and verify no free liquids exist. Liquids encountered in the pipes shall be captured, removed, segregated by compatibility/suspected radiological pedigree and containerized per appendix D-6 WCSF, waste stream #11. SUBCONTRACTOR will include verification method in their proposed work plans.

1.1.4.3 SUBCONTRACTOR will encounter various utility lines throughout the removal of the remaining DP West structures. SUBCONTRACTOR shall cut, load and package utility lines five (5) feet outside these building footprints or to the extent needed to perform this scope of work. Utility lines located under the building footprints shall be removed to a depth of 10 feet below grade and shall be drained, sized reduced, loaded and packaged in CONTRACTOR supplied containers for disposal. Utility pipe remaining shall be foam filled or capped to prevent foreign debris from entering the pipe. SUBCONTRACTOR shall notify FETL to perform utility surveys for these locations. (see appendices D-4, GIS Utility & Infrastructure Maps - map #3)

1.1.4.4 SUBCONTRACTOR shall fracture and/or create holes through the concrete in the basement slabs that are to remain to prevent water retention and provide sufficient drainage, prior to backfilling the

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basements of 21-005 and 21-150. Fracture points and/or holes shall be at a minimum every 100 square feet.

1.1.5 SUBCONTRACTOR shall, in accordance with N3B Standard Operating Procedures (SOP’s), NMED Consent Order, Field Implementation Plan for DP Site Aggregate Area Investigation of AOC-C-21-006, DP West Building 21-002 Footprint Letter Work Plan and Investigation Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1; locate, sample, record and log specified sample locations derived from these work plans. (see D-4 GIS Utility and Infrastructure Maps; appendices D-8 Work Plans and Section 1.1.5.1, referencing “Field Implementation Plan for DP Site Aggregate Area Investigation of AOC-C-21-006”, Section 1.1.5.2 referencing ““DP West Building 21-002 Footprint Letter Work Plan” and Section 1.1.5.3 referencing “Delta Prime Site Aggregate Area Delayed Sites, Revision 1” of this statement of work. Sections 1.1.5.1, 1.1.5.2 and 1.1.5.3 take order of precedence over work plans for the following changes/updates/omissions:

1.1.5.1 SUBCONTRACTOR shall adhere to and comply with the Field

Implementation Plan for DP Site Aggregate Area Investigation of

AOC-C-21-006.

1.1.5.1.1 SUBCONTRACTOR shall adhere to the sampling depths in

2.2 “Scope of Activities” for AOC C-21-006. The soil with analytical results for inorganic contamination that are above the SSLs, detected VOCs, and radiological contamination above the SALs shall be placed in CONTRACTOR supplied containers and sampling depths shall be adjusted accordingly and documented. If greater depths are required to achieve the work plan’s scope of activities than those referenced in section 2.2, as well as “Nature and Extent” for Industrial and Construction Worker SSLs and SALs, notify the FETL

1.1.5.1.2 SUBCONTRACTOR shall adhere to Delta Prime Site

Aggregate Area Delayed Sites, Revision 1, Sections 8.0 “Investigation Methods” through section 8.11 and Tables 8.0- 1 and 8.0-2 when working to the Field Implementation Plan for DP Site Aggregate Area Investigation of AOC C-21- 006.

1.1.5.2 SUBCONTRACTOR shall adhere to and comply with the DP West Building 21-002 Footprint Letter Work Plan.

1.1.5.2.1 SUBCONTRACTOR shall adhere to the sampling depths in Table 2.3-1. The soil with analytical results for inorganic contamination that are above the SSLs, detected VOCs, and radiological contamination above the SALs shall be placed in CONTRACTOR supplied containers and sampling depths shall be adjusted accordingly and documented. If greater depths are required to achieve the work plan’s scope of activities than those referenced in section 2.3, as well as “Nature and Extent” for Industrial and Construction Worker SSLs and SALs, notify the FETL.

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1.1.5.2.2 SUBCONTRACTOR shall adhere to Delta Prime Site

Aggregate Area Delayed Sites, Revision 1, Sections 8.0 “Investigation Methods” through section 8.11 and Tables 8.0- 1 and 8.0-2 when working to the DP West Building 21-002 Footprint Letter Work Plan.

1.1.5.3 SUBCONTRACTOR shall adhere and comply with the Investigation

Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1 work plan with the following clarifications, omissions and/or additions;

1.1.5.3.1 Omit Table 1.0-1, Sections 4.0, Figure 4.1-1 and Table 4.2-

1, Section 5.0 and Table 5.2-1, Section 7.0, Figure 7.2-1, Table 7.2-1, 7.3-1 and Table 7.3-1 in their entirety.

1.1.5.3.2 Omit sample locations at DP West Slabs Consolidated Unit 21-022(b)-99 beginning with sample point 1 up to and including sample point 57 and 139 on Figure 6.1-1 and Table 6.2-1.

1.1.5.3.3 Include sample locations at DP West Slabs Consolidated Unit 21-022(b)-99 beginning with sample point 58 up to and including sample point 138 on Figure 6.1-1 and Table 6.2-1.

1.1.5.3.4 SUBCONTRACTOR shall adhere to the sampling depths in Tables 6.2-1. The soil with analytical results for inorganic contamination that are above the SSLs, detected VOCs, and radiological contamination above the SALs shall be placed in CONTRACTOR supplied containers and sampling depths shall be adjusted accordingly and documented. If greater depths are required to achieve the work plan’s scope of activities than those referenced in sections 6.2.3, as well as “Nature and Extent” for Industrial and Construction Worker SSLs and SALs, notify the FETL.

1.1.6 SUBCONTRACTOR shall, following demolition and in accordance with appendix D-4 maps; excavate, auger, sample, and investigate all non-SWMU/AOC sample points indicated in blue outlined on map #1, numbers 1 through 120 and map #2 B1 through B28. Methods, analytical suits and process shall be followed as stated in the DP West Aggregate Area Delayed Sites, Revision 1 and Table 8.0-

1. Depths shall be 0-1 feet and 2-3 feet for piping (where zero feet is directly under pipe), and 0-1 feet and 2-3 feet for structures (where zero feet is grade surface). (For visual purposes, Map #1 includes sample points from the IWP for DP Aggregate Area Delayed Sites and DP West Building 21-002 Footprint LWP)

1.1.7 SUBCONTRACTOR shall remove, size reduce, load and package all asphalt and/or concrete to perform sampling, remediation and/or demolition activities.

Material shall be loaded and packaged in lined CONTRACTOR provided bins.

Soil inclusion in this waste stream should be kept as low as possible (i.e. trace levels per appendix D-6 WCSF, waste stream #4)

1.1.8 SUBCONTRACTOR shall request and ensure they receive data pulls for sample delivery groups as they become available from the N3B data steward by sending a data request by email to the FETL and N3B data steward that includes a complete list of sites/sample points, sampling plan, event IDs, location IDs, and

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Sample IDs. Preliminary and final data pulls will take a minimum of 30 calendar days to complete and this duration must be incorporated into the project schedule. Upon receipt of the initial sampling analysis data, SUBCONTRACTOR shall remediate, load and package, into CONTRACTOR supplied containers all contaminated soils. Sampling and remediation shall continue to 10 ft. bgs, as necessary (refer to Section 1.2.3.1). Nature and Extent sampling shall continue greater than 10 feet, as necessary (refer to Section 1.2.3.1).

1.1.8.1 SWMU’s and AOCs shall be remediated to industrial and construction worker SSLs and SALs (which is ever is more conservative).

1.1.8.2 If newly discovered contamination is found in non-SWMU and non-AOC areas, those localized areas shall be remediated to “residential” SSLs and SALs. Otherwise, non-SWMU and non-AOC areas shall meet industrial and construction worker SSLs and SALs (which is ever is more conservative).

1.1.9 All soil and tuff removed from within or adjacent to (e.g., from benching and/or sloping to stabilize a trench) or below excavated material, shall be placed in piles of no more than 100 yd³. Overburden shall be separated from under-burden from those objects to be removed and sampled accordingly. Representative composite samples shall be taken every 50 yd³ and the location demarcated for segregation for disposal if necessary. If the soil and tuff are determined to be suitable for reuse (i.e., is not hazardous waste and meets Residential soil screening levels [SSLs] and screening action levels [SALs]), the evacuated environmental media will be segregated from man-made debris, and the soil will be used to backfill the excavations. If the media does not meet Residential SSLs/SALs, or are determined to be a hazardous waste, the excavated media will be containerized at the point of generation and stored in a secure, designated waste staging area. Man-made debris that may be present in the excavated material waste stream must be reported for the off-site waste profile.

SUBCONTRACTOR to assume 75% of soils can be returned as fill. (see D-6 WCSF waste stream #3, see table 2.3-1 and 2.3-2, or latest version of “Residential” SSLs and SALs referenced in the IWP for DP Site Aggregate Area Delayed Sites, Rev 1 and Exhibit C Form A Pricing)

1.1.10 SUBCONTRACTOR shall maintain sample custody and provide transportation of the samples to the N3B Sample Management Office (SMO).

SUBCONTRACTOR shall arrange transportation to/from the SMO to obtain and deliver CONTRACTOR provided media.

1.1.11 SUBCONTRACTOR shall be responsible for Organic Vapor Field Screening to determine sample(s) collection. (see section 8.7.2 of the Delta Prime Site Aggregate Area Delayed Sites, Revision 1 work plan)

1.1.12 TA-21 Site Aggregate Area sampling and remediation will be to “Industrial” and “Construction Worker” scenario levels in Table 2.3-1 or latest version referenced in the Delta Prime Site Aggregate Area Delayed Sites, Revision 1.

Over and Under-burden soil will be to “Residential” scenario levels if used as backfill. (Screening Level category for SSLs and SALs)

1.1.13 SUBCONTRACTOR shall be responsible for installing CONTRACTOR provided liners into roll-off bins. SUBCONTRACTOR shall provide and place adequate absorbent for all containers, as well as provide intra-site transportation (after initial mobilization provided by CONTRACTOR) to include bin pick-up (via bin

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end-hook), staging, weighing (pre-and post-loading) on CONTRACTOR provided scale and relocating to CONTRACTOR designated waste staging area.

1.1.14 SUBCONTRACTOR shall, in accordance with the Exhibit F, provide all Personal Protective Equipment (PPE) to perform this statement of work (e.g. hard hats, safety glasses, protective footwear, high visibility vest/clothing, gloves, coveralls, respirators, modesties, etc.).

1.2 Technical and Investigative Reporting

1.2.1 Prepare an Investigation Report (IR) for SWMU 21-22(i) and AOC C-21-006 and all Consent Order work defined in this statement of work, in accordance with the June 2016 Compliance Order on Consent and NMED Risk Assessment Guidance for Site Investigations and Remediation (March 2019 or latest version).

SUBCONTRACTOR shall use appendix D-12 “Supplemental Investigation Report for Threemile Canyon Aggregate Area, Revision 1, July 2018” as an IR template. The IR should be prepared in the same manner, text and format as the Threemile SIR;

1.2.1.1 SUBCONTRACTOR scope is not complete until the IR is approved by N3B, DOE and New Mexico Environmental Department (NMED).

Additional re-work (e.g. sampling or remediation work) if necessary, is SUBCONTRACTORS responsibility to complete in order to obtain N3B, DOE, and NMED IR approval.

1.2.2 Prepare and present a data decision peer review, including a draft data/action summary report for each SWMU/AOC. The summary report shall include a list of sites included in the IR, questions/problems, proposed decisions, and recommendations for each SWMU/AOC. Revised summary analytical data tables, revised Excel data files, and revised maps (figures and plates) for sites included in the IR with correct sampling locations and data will also be included.

The data decision peer review must be completed at least 30 calendar days before the 95% peer review draft is submitted.

1.2.3 Analyze sampling data, incorporate field-operations data, prepare tables, plates, and figures as appropriate, prepare appendices as appropriate, present the Chemical of Potential Concern (COPC) identification, nature and extent determination.

1.2.3.1 If the COPC concentrations are sufficiently below the SSL/SAL (e.g. the industrial/construction worker SSL/SAL is 10 times [an order of magnitude] or more than all concentrations), the COPC does not pose a potential unacceptable risk, and no further sampling for extent is warranted.

1.2.4 For SWMU 21-22(i) and AOC C-21-006 and all Consent Order work defined in this statement of work, SUBCONTRACTOR shall prepare and submit to the FETL a 30% IR draft, a 60% IR draft, and the 95% peer review draft.

1.2.4.1 The 30% draft shall include the document outline and Sections 1-5 complete. The 30% draft is due to the FETL on or before September 16, 2020.

1.2.4.2 The 60% draft shall include the 30% draft and shall analyze sampling data, incorporate field operations data, present data in tables and

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figures, present the COPCs, discuss the nature and extent of contaminants at each site, and include present-day human and ecological health risk assessments for the AOC and SWMU completed.

The 60% draft is due to the FETL on or before November 13, 2020.

1.2.4.3 The 95% peer review draft shall analyze sampling data, incorporate field operations data, present data in tables and figures, present the COPCs, discuss the nature and extent of contaminants at each site, and include present-day human and ecological health risk assessments for each site, and ensure all sites within the Aggregate Area are recommended for COCs, or deferred status. The 95% draft is due to the FETL on or before January 13, 2021.

1.2.5 The following assumptions are valid for section 1.2

1.2.5.1 IR’s will be prepared for the sites identified in the “Investigation Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1” and “DP West Building 21-002 Footprint Letter Work Plan”, and Field Implementation Plan (FIP) for DP Site Aggregate Area Investigation of

AOC-C-21-006.

1.2.5.2 All data collected in support of the investigations of SWMU’s and AOC’s detailed in this Exhibit D will be included in the IR.

1.2.5.3 SUBCONTRACTOR shall review and incorporate NMED notice of disapproval (NOD) comments associated with previous investigation reports, if applicable.

1.2.5.4 SUBCONTRACTOR shall provide final editing, compositing, and production of the IR with minimal assistance from CONTRACTOR.

1.2.5.5 SUBCONTRACTOR shall participate in a formal peer review in accordance with N3B-AP-ER-0002, “Peer Review of Documents/Deliverables.” Peer reviewers will review the document and provide comments. This activity includes providing electronic files of the peer review draft in the format specified in section 3.2 and 3.3 of this statement of work.

1.2.5.6 SUBCONTRACTOR shall prepare data tables in the main text to include current SSLs/SALs and include footnotes accordingly.

1.2.5.7 SUBCONTACTOR shall submit coordinates for sampling locations to the SMO for upload before requesting analytical data for reporting. All spatial data must be collected using the laboratory standard State Plane Coordinate System, New Mexico, Central Zone, US Feet, North American Datum 1983. Map products and spatial data development must be completed using Environmental Systems Research Institute (ESRI) ArcGIS or Autodesk AutoCAD MAP products.

SUBCONRACTOR is responsible for the production of any required maps utilizing the ER GIS spatial database for existing base data. Any spatial data represented in map products that did not originate from, or is a modification of, spatial features in the CONTRACTOR’s ER GID spatial database must be submitted in the ESRI Shapefile/Geodatabase or

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AutoCAD DXF/SWG format to CONTRACTOR’s ER GIS personnel at the time of report or revision completion.

1.2.5.8 SUBCONTRACTOR shall present human and ecological Risk Assessments for each site.

1.2.5.8.1 SUBCONTRACTOR shall conduct site visits and prepare Ecological Scoping Checklists for each SWMU/AOC.

Checklists can be combined if the form of the site releases is similar. The checklists shall be included as an attachment to the risk assessment appendix.

1.2.5.8.2 SUBCONTRACTOR shall evaluate the potential for vapor intrusion of volatile organic compounds into a building for the residential scenario when feasible using the Johnson and Ettinger model. The vapor intrusion spreadsheet calculating the screening levels shall be included as an attachment to the risk assessment appendix.

1.2.5.8.3 SUBCONTRACTOR shall provide ProUCL calculations, including input and output files for each site and scenario (if applicable) as an attachment to the risk assessment appendix.

1.2.5.8.4 SUBCONTRACTOR shall provide calculations of dioxin- and furan-equivalent concentrations for each site and scenario, as appropriate, as an attachment to the risk assessment appendix.

1.2.5.8.5 SUBCONTRACTOR shall incorporate new requirements

from NMED guidance documents. This may include revisions to risk tables (new SSLs, SSDLs and making sure COPCs with both carcinogenic and non-carcinogenic effects are in both tables for a scenario), recalculations of risks, and updating risk numbers in risk appendix text, main text, and in site risk summaries and conclusions. This may include revisions to SSLs in Sample Identification Detect (SID) tables, updates and changes

1.2.6 Incorporate Peer Review Comments

1.2.6.1 Prepare and submit a final draft to the FETL incorporating all peer review comments. This constitutes a final edited and composited version of the SIR in electronic format, organized and formatted in compliance with N3B requirements for documents and deliverables;

1.2.6.2 The following assumptions are valid for sections 1.2.6.1:

1.2.6.2.1 SUBCONTRACTOR shall incorporate and resolve all

comments resulting from a peer review process and shall obtain all required signatures from peer reviewers as required by the peer review process;

1.2.6.2.2 SUBCONTRACTOR shall submit all electronic files of the final draft document to the FETL per section 3.2 and 3.3;

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CONTRACTOR will prepare the submittal letter, produce the hard copies, and submit the final document to NMED.

1.2.6.3 Prepare presentation materials for internal, public, and/or regulatory meetings, if required.

1.3 Work Excluded

1.3.1 CONTRACTOR will provide utility maps with the latest available information prior to the start of any work.

1.3.2 CONTRACTOR will process all site badge requests.

1.3.3 CONTRACTOR will procure/provide all waste containers (e.g. cubic yard roll-off bins, steel or poly drums, B12’s/B25’s etc.), liners and labeling. CONTRACTOR will provide for the initial mobilization/staging to the site, as well as final inspection, transportation and disposition/disposal off-site for all wastes, including hazardous, non-hazardous, universal, LLW, MLLW, RCRA, TSCA and New Mexico Special wastes.

1.3.3.1 CONTRACTOR to provide roll-off bins for loading LLW that will range from 20 yd³ to 25 yd³, IP-1 intermodal containers with side load and top load capabilities.

1.3.4 CONTRACTOR will provide all sampling media (excluding SUBCONTRACTOR personal IH monitoring during field activities) including; sampling labels, preservatives, coolers, chain of custody forms and laboratory sample analysis to be utilized during all investigation field sampling activities.

1.3.5 CONTRACTOR will provide a calibrated, drive-over scale for use in weighing large containers and portable scales for small containers to obtain required weights necessary for compliance, developing profiles, waste disposal requests and final disposition.

1.3.6 CONTRACTOR will provide the Waste Management Coordinator (WMC) to provide oversight during waste operations, prepare N3B Waste Profile Forms (WPFs) and Waste Disposal Requests (WDRs). CONTRACTOR WMC will be deployed to certify, observe, log and perform waste management oversight of SUBCONTRACTOR’s personnel during size reduction, loading, packaging and weighing activities for all waste streams. CONTRACTOR will sign as the Waste Generator for the purposes of this work scope.

1.3.7 CONTRACTOR will supply all Radiological Control Technician (RCT) personnel, instrumentation and support. This will include field-screening, surveys, Radiological Work permits (RWP’s), bio-assay (if necessary) and dosimetry (TLD’s), Analytical Lab support and provide all Personnel Protective Equipment (PPE) for the N3B personnel to support this work scope.

2.0 TECHNICAL REQUIREMENTS

2.1 Technical Specifications

The following specifications and technical documents are incorporated by reference herein and shall have the same force and effect as if printed in full text.

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SUBCONTRACTOR responsible for working to the latest version. The documents provided in Appendix D-8 “Work Plans” are supplemented in sections 1.1.5.1, 1.1.5.2 and

1.1.5.3 of this statement of work.

2.1.1 “Investigation Work Plan for Delta Prime Site Aggregate Area Delayed Sites, Revision 1”, December 2009 (EP2009-0660) LA-UR-09-8180

2.1.2 “DP West Building 21-002 Footprint Letter Work Plan”, January 2011 (EP2011-

00057) LA-UR-11-0127

2.1.3 “Field Implementation Plan for DP Site Aggregate Area Investigation of AOC-C-

21-006, November, 2018.

2.1.4 “Supplemental Investigation Report for Threemile Canyon Aggregate Area, Revision 1, July 2018 (EM2018-0011)

2.1.5 “Derivation and Use of Radionuclide Screening Action Levels, Revision 2,”

LA-UR-12-23292, October 2012 (EP2012-0158)

2.1.6 “Technical Approach to Calculating Recreational Soil Screening Levels for Chemicals, Revision 3,” LA-UR-12-25447, October 2012 (EP2012-0234)

2.1.7 “Inorganic and Radionuclide Background Data for Soils, Canyon Sediments, and

Bandelier Tuff at Los Alamos National Laboratory,” LA-UR-98-4847, September

2.1.8 “Screening Level Ecological Risk Assessment Methods, Revision 5.1,”

LA-UR-18-22418, April 2018 (EP2018-0053)

2.1.9 ECORISK Database, Release 4

2.1.10 EPA regional screening levels available on line at:

http://www.epa.gov/reg3hwmd/risk/human/rb-concentration_table/Generic_Tables/index.htm

2.1.11 State of New Mexico Environment Department Compliance Order on Consent (June 6, 2016, modified February 2017)

2.1.12 New Mexico Environment Department Risk Assessment Guidance for Site

Investigations and Remediation, Volume 1 & Volume II, Soil Screening Guidance for Human Health Risk Assessments (March 2019)

2.1.13 ADEM-SPEC-C-31-2000 Rev. 4, Environmental Management Specification for

Earth Moving; section 2.1.C “MATERIALS – Site Grading and Fill”, section 2.1.D “MATERIALS – Base Course”, and section 3.11 “EXECUTION – Backfilling Excavations/Trenches”.

2.1.14 Electronic Public Reading Room: https://eprr.lanl.gov/oppie/service

2.2 Facility Training, Qualification and/or Certification Requirements

Prior to commencing work on site at TA-21, SUBCONTRACTOR personnel and lower-tier subs shall meet the general and facility training, qualification, and/or certification

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requirements specified in Appendix D-7: Training Requirements Matrix. (e.g. 40-hour HAZWOPER, 49-CFR 171.1 Subpart A applicability, 172 Subpart H, training/certification

HMR/HMPT)

2.3 Technical Approach

The following technical approach or methodology shall be followed in the performance of SUBCONTRACTOR’S work.

2.3.1 SUBCONTRACTOR shall adhere to the “Site Utilization Map” in appendix D-4 for work zone delineation, bin laydown area, directional flow of traffic, location of field trailers and designated parking areas.

2.3.2 SUBCONTRACTOR shall perform the sequence of work in the following order:

1) Exhibit D, Section 1.1.1.1 Utility tunnel comprehensive radiological characterization survey of the interiors of the utility tunnels for contamination,

2) Exhibit D, Section 1.1.1.3 DP West concrete waste characterization sampling and concrete coring/cutting to perform nature and extent sampling in the basement of 21-005 and 21-150 prior to demolition. (see appendix D-4 maps)

3) Exhibit D, Section 1.1.5.1, work scope for AOC-C-21-006 per the Field Implementation Plan for DP Site Aggregate Area Investigation of AOC-C-21- 006, (i.e. investigation sampling, nature and extent, remediation, packaging)

4) Exhibit D, Section 1.1.5.2, work scope associated with SWMU 21-022(i) from the “DP West Building 21-002 Footprint Letter Work Plan” (i.e. investigation sampling, nature and extent, remediation, packaging)

5) Exhibit D, Section 1.1.5.3, work scope associated with the “Investigation Work Plan for Delta Prime Site aggregate delayed Sites, Revision 1” for the North and South wings of former structures 21-003 and 21-004(see appendix D-4 maps and D-8 Work plans),

6) Exhibit D, Section 1.1.2 and 1.1.3, asbestos/hazardous materials abatement, RLW line removal and contaminated soils remediation from the utility tunnels as necessary.

7) All remaining activities in SUBCONTRACTOR’s work scope. (e.g. D&D of the DP West slabs, asphalt, stem-walls/footers, stairwells, docks, vaults/sumps, basements to 10 bgs, post-demolition investigation sampling, optional scope items, etc.)

2.3.3 SUBCONTRACTOR shall perform all work in accordance with the Consent Order, NMED Risk Assessment Guidance for Site Investigations and Remediation (March 2019 or current version) CONTRACTOR methodologies, and any technical direction provided by the FETL.

2.3.4 All compliance/confirmation samples, unless otherwise specified, shall take place after all D&D work is complete. Non-SWMU/AOC areas must also meet Industrial/Construction Worker SSLs/SALs, but no Risk Assessment necessary.

SWMU 21-22(i) and AOC C-21-006 shall be completed such that NMED Certificates of Completion (COC) are attained obtained for both sites. Data must represent final end state conditions.

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2.3.5 SUBCONTRACTOR shall use the N3B Request for Information (RFI) form, provided in Appendix D-13 of this Exhibit to ask questions, request information, or request clarification from CONTRACTOR. The N3B RFI form, Request for Information, Technical Subcontract Management: shall not be used as a technical or commercial change document and shall not alter the subcontract requirements in any way or to direct a change in SUBCONTRACT requirements.

Requests to deviate (change) from subcontract requirements shall be made utilizing the Subcontractor Deviation Disposition Request (SDDR) form per Appendix D-14.

2.3.6 CONTRACTOR may make technical changes to previously approved and issued technical documents pursuant to Exhibit A, General Conditions. Those changes may be delineated on a; Field Change Request, Field Change Notice, Design Revision Notice or other appropriate document attached to a Change Request.

2.3.7 All requests from SUBCONTRACTOR must go through the FETL assigned to the project. No field direction, changes or notices will be acceptable from ANY individual other than the FETL and the N3B Contracting Officer (CO).

2.3.8 In executing the activities outlined in this Exhibit D, it is incumbent upon SUBCONTRACTOR to achieve schedule requirements set forth herein and consistent quality as required in the subcontract documents made a part hereof.

2.4 Technical Performance Requirements

2.4.1 SUBCONTRACTOR must meet CONTRACTOR’s intended purpose of the Work to CONTRACTOR’S satisfaction and complete the following to reach Substantial Completion:

2.4.1.1 All items removed, packaged, and staged.

2.4.1.2 Complete demolition and removal (to a depth of 10 ft. bgs, unless otherwise stated) of any above grade structures, below grade structures, and foundations including slabs, stem walls, footers and piping.

2.4.1.3 Complete all excavations, sampling, nature and extent, remediation efforts, backfill, final grading and site stabilization.

2.4.1.4 NMED approved Investigation Reports.

2.4.2 SUBCONTRACTOR shall comply with all United States, Federal, DOE, N3B, and New Mexico laws, regulations, and requirements.

2.4.3 SUBCONTRACTOR shall prepare for and participate in periodic CONTRACTOR, DOE, and NMED compliance audits, as necessary.

2.4.4 Prior to site mobilization, SUBCONTRACTOR shall prepare for and participate in the performance of the CONTRACTOR Readiness Review; and complete any PRE- and POST start findings. CONTRACTOR expects to give the SUBCONTRACTOR written notice to proceed within 3 working days of satisfactorily meeting the requirements of the Readiness Review, including closing out all pre-start findings. No mobilization is permitted before the notice to proceed is given. All work documents described in Exhibit I Required Submittals, such as the Site-Specific ES&H Plan (SSESHP), site specific SAP, Integrated Work Documents (IWDs), and worker-training certifications shall be reviewed and

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approved (with CONTRACTOR comments incorporated) prior to the Readiness Review.

2.4.4.1 SUBCONTRACTOR is required to submit within 15 working days after Notice of Award a complete detailed Project Execution Plan (PEP) that describes at a minimum the following:

2.4.4.1.1 Detailed description and sequencing of all activities including; mobilization, site access, work zone designation, storm water controls, safety and over-all work execution approach.

2.4.4.1.2 A comprehensive list of equipment to be used for the process; the method and sequence/phases of hazardous materials removal, demolition technique demonstrating the process which includes a narrative of the state or stability of a partially demolished structure and to completion.

2.4.4.1.3 Description/work approach outlining the investigation and remediation work activities, existing conditions, procedures and precautionary measures to include waste characterization and verification, public safety and radiological protection.

2.4.4.1.4 Management approach and how it will be implemented in the field, as well as a detailed approach to accomplish “nature and extent”, certificates of completion, investigation reporting and end state goals and objectives.

2.4.5 SUBCONTRACTOR shall comply with the following Key Personnel Requirements:

2.4.5.1 All SUBCONTRACTOR Key Personnel shall attend the Readiness Review and Project Kickoff meetings. Either the SUBCONTRACTOR Project Manager and/or Project Superintendent shall attend weekly project status meeting with the CONTRACTOR. Either the SUBCONTRACTOR Project Manager and/or Project Superintendent shall attend all daily Pre-Job Briefings.

2.4.5.2 The SUBCONTRACTOR Key Personnel Project Manager shall be onsite (i.e., TA-21) as needed during regular on-going field activities. The SUBCONTRACTOR Key Personnel Project Manager shall be pro-active and onsite during the start of all major activities (e.g., mobilization, demolition, waste packaging, sampling, remediation and site stabilization) and to properly engage in the roles and responsibilities of project management, communication and the mitigation of any issues that could impact the project.

2.4.5.3 The SUBCONTRACTOR Key Personnel Project Superintendent (Person- In Charge (PIC) shall be onsite (i.e., TA-21) 100% of the time during regular on-going field activities.

2.4.5.4 The SUBCONTRACTOR Key Personnel ES&H Specialist shall be onsite (i.e., TA-21) 100% of the time during regular on-going field activities.

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2.4.5.5 In the event any of the SUBCONTRACTOR Key Personnel cannot meet these onsite requirements, temporary substitutions of the SUBCONTRACTOR Key Personnel can be accommodated. However, advanced notice, to the extent possible, must be given and approved by FETL a minimum of 3 days prior to the substitution (unless it is an emergency, or medical situation), and shall meet all training requirements for their specific key position.

2.4.5.6 SUBCONTRACTOR Key Personnel shall only fulfill one Key Position at any one time (i.e., one individual cannot fulfill 2 or more Key Personnel positions at any one time), except in the rare temporary substitution cases per prior FETL approval. Emergency Personnel changes and position will be evaluated on a case-by-case basis.

2.4.5.7 SUBCONTRACTOR Key Personnel shall not fulfill other project roles that would distract from their primary key position responsibilities (e.g. “Key Personnel” shall not be an equipment operator or craft laborer while fulfilling their key position.

2.4.6 All work will be performed in a site access controlled area requiring SUBCONTRACTOR to check in and out daily with site Access Control and have work activities placed on the Plan of the Day (POD) and Plan of the Week (POW) schedules. This shall be coordinated with the FETL.

2.4.7 SUBCONTRACTOR shall account for adequate time to enter (sign in) and exit (sign out) of the work area, as well as adequate time to perform/participate in pre-job safety meetings, Task Specific Briefings, plan of the day/week meetings and weekly status meetings.

2.4.8 SUBCONTRACTOR shall provide N3B/LANL badged, trained and qualified personnel to perform unclassified work at this location. NOTE: Short-term visits may include entering an area to perform a repair or make a delivery and visitor badges can be obtained through the FETL. SUBCONTRACTOR must use U.S.

citizens to work inside the TA-21 area.

2.4.9 SUBCONTRACTOR shall inspect and approve all equipment prior to its use during TA-21 work. Equipment should be free of leaks and maintained at the highest standard possible during operation.

2.4.10 SUBCONTRACTOR shall escort and utilize appropriate flagging personnel for heavy trucks/equipment through the access gates and to the designated work-site.

2.4.11 SUBCONTRACTOR shall install storm water pollution prevention controls before site/soil disturbance and must be maintained during field work execution per the Storm Water Pollution Prevention Plan (SWPPP).

2.4.11.1 SUBCONTRACTOR shall follow SWPPP guidelines to institute best management practices (BMPs) to restrict potential surface water impacts to the site. BMPs shall be applied to natural storm water run on/runoff routes that may be impacted by operations, as well as the generation of secondary liquid streams such as demolition, decontamination and dust suppression fluids.

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2.4.11.2 Investigative Derived Waste (IDW) must be managed in accordance with D-6 WCSF and Appendix B of the IWP DP Site Aggregate Area, Rev. 1. If results for Excavated Environmental Media are below Residential SSL and SAL limits, it can be used to fill excavations that are complete. Storm water controls must be installed and maintained around the spoils piles per D-5 SWPPP. Composite samples shall be taken every 50 yd³ and the locations marked for segregation for disposal if necessary. IDW must be staged until analytical data allows for use as fill described above.

2.4.12 SUBCONTRACTOR is responsible for repairing any damage due to construction activities to current storm water permitted features and for preventing storm water runoff from discharging to delineated Site Monitoring Area (SMA) drainage.

(see appendix D-5 SWPPP)

2.4.13 Dust control measures shall be used to control airborne emissions to an acceptable level per the SUBCONTRACTOR Site Specific Environmental, Safety and Health Plan (SSESHP). Dust shall be controlled by wetting methods and engineering controls, as necessary. SUBCONTRACTOR shall supply, install and maintain a compatible back-flow preventer to be used on CONTRACTOR supplied fire hydrant. Water shall be applied in a controlled manner to manage the dust without resulting in excess ponding or run-off. Respirable silica air monitoring is required per Exhibit F.

2.4.14 SUBCONTRACTOR shall provide robust boundaries (e.g. mobile metal fencing, rails, barricades etc.) and signage around radiological areas, demolition activities, excavations (>8 feet bgs) and heavy traffic work areas to prevent unauthorized access. Boundaries shall have safe access points at each entrance/exit. Less robust construction boundaries/fencing may be utilized for low-risk activities. SUBCONTRACTOR may utilize existing barricades as necessary.

2.4.15 SUBCONTRACTOR shall be responsible for any needed traffic control on site per Exhibit F requirements. In the event traffic will be impeded or blocked for an extended period, a Traffic Control Plan may be requested.

2.4.16 SUBCONTRACTOR shall comply with the Excavation/Fill/Soil Disturbance Permit (EXID). (see appendix D-15 EXID)

2.4.17 Upon completion of demolition, sampling and/or remediation activities, SUBCONTRACTOR shall fill and compact excavations to match existing grade/contour for final site stabilization. Disturbed areas shall be stabilized with compacted base course per the SWPPP. Base course material shall meet the requirements of the Earth Moving Specification section 2.1.D and be compacted to approximately 95% maximum dry density as confirmed by FETL. Required fill material shall meet the requirements of the Earth Moving Specification section 2.1.C. Backfill shall be placed per Earth Moving Specification section 3.11 and compacted to approximately 90% maximum dry density as confirmed by FETL.

Fill material and base course must be sampled prior to arrival to demonstrate compliance with Residential…