Attachment_1_Statement_of_Work_-_El_Capitan_Removal_Action.pdf

NTCRA under CERCLA at El Capitan former waste dump Yosemite National Park Attachment 1: Statement of Work

1. Introduction.

1.1. The National Park Service (NPS) is exercising its authority as lead agency under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), 42 U.S.C. §§9601 et seq., to undertake a response action at El Capitan in Yosemite National Park.

The contractor will implement a previously-developed Non Time-Critical Removal Action work plan (NTCRAWP) at El Capitan Former Waste Disposal Area to remove ~15,430 tons of contaminated soil and debris, transport it to appropriate disposal facilities, and prepare a Response Action Completion Report. The work includes field and lab analyses of soil samples in addition to preparation of reports and other documentation required for this type of CERCLA action. After the soil contaminants are removed, the contractor will install five groundwater monitoring wells and perform the first year of monitoring. (NPS will issue a separate acquisition to perform groundwater sampling, analysis, treat the groundwater if necessary, and prepare reports of groundwater findings for up to five years.)

2. Site Information

2.1. Yosemite National Park is about 750,000 acres and is situated about 60 miles north of Fresno, California and about 170 miles east of San Francisco, California in the Sierra Nevada Mountain range. About 95 percent of the park is designated wilderness. The Park protects a broad range of life zones of the Sierra Nevada from the Lower Montane Forest up to the Alpine Zone. See WWW.NPS.GOV/YOSE for additional information.

2.2. See “Engineering Evaluation/Cost Analysis Report, El Capitan Former Waste Disposal Area”, 2020, (El Capitan EE/CA), for additional information.

2.3. See “Final – Non Time-Critical Removal Action Work Plan, El Capitan Former Waste Disposal Area, Yosemite National Park, California”, 2022 (El Capitan NTCRA WP, Attachment

2) for additional information.

2.4. Electricity – There is no electrical service available at the project Site. Contractor shall provide source for power and lighting. Temporary Electrical: Temporary electrical work shall meet requirements of NFPA 70-1996 (NEC), Article 305.

2.5. Water – No water is available on Site for Contractor’s use. Contractor shall provide water for Site use. Furnish cool, potable water for personnel in locations convenient to work areas.

2.6. Establishing a camp within Yosemite National Park is prohibited. Contractor’s employees may stay in campgrounds or lodging open to visitors.

2.7. Cellular phone service – Most carriers provide at least a minimal level of reception at the site; Verizon has the best coverage.

3. General Requirements

3.1. Work shall be performed in accordance with (IAW) this Statement of Work (SOW) and Attachment 2, El Capitan NTCRA WP. The Contractor shall supplement the plans as specified below and as they deem necessary to complete the work safely and effectively. In no case shall the Contractor’s planning supplements delete or relax NPS requirements.

http://www.nps.gov/YOSE https://doimspp.sharepoint.com/sites/nps-NPS_ECCD_External_Communications/YOSE%20CERCLA%20El%20Capitan/Forms/AllItems.aspx https://doimspp.sharepoint.com/sites/nps-NPS_ECCD_External_Communications/YOSE%20CERCLA%20El%20Capitan/Forms/AllItems.aspx

3.2. The work shall conform to removal design and Final – Non Time-Critical Removal Action Work Plan, El Capitan Former Waste Disposal Area, Yosemite National Park, California”, 2022 (Attachment 2, “WP”). Section 10.0 of the WP indicates that NPS will issue two contracts, for an Environmental Consultant and a General Contractor, but the implementation strategy has changed. The intent is for the contractor hired under this SOW to perform all actions in the WP, using subcontractors as necessary.

3.3. In the event of a conflict between the El Capitan NTCRA WP and this SOW, notify the CO and COR for resolution.

3.4. Safety Requirements. The Contractor shall comply with 29 CFR 1910.120(b), EM-385-1- 1, and all relevant and applicable safety regulations as promulgated by OSHA and Cal/OSHA.

Additionally, the Contractor shall adhere to all generally accepted and professionally practiced safety standards.

3.5. Comply with regulations of the NPS or other authority having jurisdiction, governing the protection of land that includes or is adjacent to the project.

3.6. At all times the Contractor shall conduct their organization in conformance with the rules and regulations promulgated by the Secretary of the Interior for the National Park Service, and with such appropriate regulations as the park Superintendent may prescribe (refer to https://www.nps.gov/yose/learn/management/lawsandpolicies.htm; the contractor must comply with the rules in effect at the time work is underway).

3.7. Coordination with the NPS.

3.7.1. The Contractor shall maintain close and continual coordination with the NPS to assure adequate and timely flow of information.

3.7.2. The NPS will administer the contract and provide management of NPS activities as needed. NPS will provide additional data and information concerning Site(s) at which work is to be done after contract award.

3.7.3. Site visits shall be approved in advance by the COR and YOSE POC; notify them of intent to visit at least 10 days ahead.

3.7.4. When possible, NPS will assist the Contractor in obtaining pertinent documentary materials, historical information, maps, photographs, Site plans, forms, and other material as available.

3.7.5. The Contractor may submit requests for progress payments no more frequently than monthly.

3.8. Confidentiality. The information developed under this contract is the property of the U. S.

Government and shall be kept in strict confidence. All documents and other work developed in the performance of this contract shall be and shall remain the sole property of the Government and may be used on any other work without additional compensation to the Contractor. With respect thereto, the Contractor agrees not to assert any rights and not to establish any claim under the patent or copyright laws.

3.9. Proprietary Information Statement.

3.9.1. The Government will retain rights to all work products and intellectual property produced under this contract.

https://www.nps.gov/yose/learn/management/lawsandpolicies.htm

3.9.2. All documentary materials provided to the Contractor will remain property of the U.S.

Government and must be returned to the NPS before final payment.

3.9.3. NPS may release this contract’s work products to the public or share them with third parties for technical review.

3.9.4. Except as otherwise specifically provided for in this contract, Contractor shall not publish or otherwise release, distribute, or disclose any work product generated under this contract prior to obtaining express written approval of the NPS CO or COR. The Contractor shall not include proprietary information in work products.

3.10. The Contractor shall furnish all removal action services, materials, supplies, labor, equipment, investigations, studies, superintendence, and travel, as required, for completing the tasks.

3.10.1. The Contractor shall, without additional expense to the government, obtain any necessary licenses, permits, and shall comply with all federal, state, and local laws, regulations, rules, and codes applicable to the performance of the tasks required for this SOW.

3.10.2. The contractor shall provide a copy of their Hazardous Substance Removal Certification, issued by the State of California, for themselves and for any proposed subcontractors.

3.10.3. Well abandonment and installation shall be performed by an entity in possession of a C-57 Water Well Contractor’s License issued by the State of California.

3.10.4. The Contractor is advised not to perform any services requested by any person verbally or in writing, which could be considered a change in the terms or scope of this SOW or necessitating an adjustment in contract price or any contract term or condition. If revisions to the SOW are required, the NPS Contracting Officer and Contractor will negotiate the scope, terms, and price, and formalize them in a written modification to the contract.

3.11. Site access.

3.11.1. The former dump road shall be used as the Site access road. The former dump road is currently a trail/dirt road that starts at Northside Drive in the El Capitan picnic area and heads southwest to the dump (see El Capitan NTCRA WP for a map).

3.11.2. The maximum gross vehicle weight on YOSE roads for all activities in this SOW are 80,000 pounds gross vehicle weight, 20,000 pounds on a single axle, and 34,000 pounds on a tandem axle group.

4. Removal Action Requirements.

4.1. Conduct Removal Action IAW YOSE/El Capitan NTCRAWP.

4.2. Project Conference. The Contractor shall attend a conference call no later than 20 days after contract award. Attendees of the kick-off meeting shall include, at a minimum, the Contractor’s Project Manager (CPM), NPS COR, and YOSE POC/staff to discuss the team member roles and responsibilities, project deliverables, overall project planning, scheduling, and communications planning.

4.3. Project Schedule and Schedule of Values.

4.3.1. Project Schedule. The Contractor shall prepare and submit via email a detailed schedule to the COR and YOSE POC for review and approval within 15 days after contract award. The schedule shall include the planned sequence and durations of Contractor-performed and NPS-performed (e.g., product and document reviews) tasks occurring during the established period of performance (POP) and showing the planned completion date.

4.3.1.1. Unless specified otherwise for a specific deliverable, NPS shall be allowed 30 days in the schedule to review any deliverable. Days between December 15 and January 15, inclusive, shall not count against the number of review days.

4.3.1.2. All activity sequencing requirements contained in awarded and/or exercised CLINs shall be reflected in the schedule logic. If additional CLINs are authorized to be performed by the CO, integrate the additional work and provide a revised master schedule within 14 days after the contract is modified.

4.3.1.3. Changes in the work schedule involving fieldwork must be coordinated at least 72 hours in advance with the COR and YOSE POC. Saturdays, Sundays, and holidays shall not count against the 72 hours.

4.3.2. Project field work should be planned to occur at typically dry times of year to minimize the potential for soil run-off, as well as impacts to aquatic wildlife. If work is planned from November - March, the park biologist may need to conduct surveys for amphibians and/or be present during removal action activities, and more robust erosion control measures will be required.

4.3.3. The Contractor field work shall be completed by an agreed upon date with the COR and YOSE POC to provide the least interference to visitors and park activities.

4.3.4. Unless specified otherwise, “days” shall be interpreted in this SOW as calendar days.

4.3.5. All tasks in this SOW shall be completed within 730 days after award.

4.3.6. Prepare and submit a Schedule of Values (SOV) within 15 days after award of the contract, based on Form 7 that was submitted with the proposal.

4.3.7. All comments shall be addressed to the satisfaction of NPS prior to schedule or SOV finalization and commencement of the work.

4.3.8. Progress Reports. The Contractor shall submit monthly progress reports in writing. The monthly progress reports shall include a description of key accomplishments in the reporting period, planned events in the upcoming reporting period, identification of issues encountered and resolutions of issues, an updated project schedule, and a status of deliverables.

4.3.9. Teleconference Meetings. The Contractor shall attend and participate in (3) technical meetings via teleconference with COR and park staff to facilitate review and understanding of submittals and discuss response to comments, as necessary.

4.4. Pre-Removal Project Documentation. The Contractor shall prepare and submit a Site Health and Safety Plan (SHASP), Stormwater Pollution Prevention Plan (SWPPP), polyfluoroalkyl substances (PFAS) work plan (PFAS_WP) for soil and groundwater sampling, and Pre-Design Investigation work plan (PDI_WP) for groundwater contamination within 60 days after award.

4.4.1. The draft and final SHASP (for NPS concurrence), SWPPP, PFAS_WP, and PDI_WP (for NPS approval) shall be submitted to the Contracting Officer, COR, and YOSE POC for review, comment with final NPS concurrence and approval.

4.4.2. The SHASP shall comply with applicable OSHA regulations and FAR clause 52.236-13, Alt I. The Contractor shall have this SHASP available onsite for review if requested by the NPS COR or YOSE POC.

4.4.3. The SWPPP shall comply with the Clean Water Act, including wetland delineation maps.

4.4.4. Standard formats for PFAS_WP, PDI_WP, and PDI Report will be provided after contract award.

5. Removal Action.

5.1. Prior to Mobilization.

5.1.1. The Contractor shall complete and perform all notifications, permits, and compliance requirements to ensure a safe removal project.

5.1.2. The excavation area shall be demarcated as a safe work zone, including delineation of wetlands and utility clearances.

5.1.3. The Contractor is required to coordinate with NPS, local park air program, and state officials on all necessary activities.

5.2. Erosion Control.

5.2.1. Salvage and stockpile native litter and duff from the project Site before disturbing soil.

5.2.2. Use swales and other erosion control measures as specified in the approved SWPPP to prevent soil run-off. If erosion or temporary sediment control products containing natural fiber are to be used, they are to be of certified weed-free origin. If mesh or netting is used, it is to be of loose weave construction with moveable joints ("leno weave" or "gauze weave") and with holes either no larger than 0.25 inches across or they must be over 3 by 3 inches in dimension.

Materials are to be removed in a timely manner once they are no longer necessary.

5.2.3. Biobased products are preferred; refer to BioPreferred|Catalog.

5.3. Protection of Cultural Resources.

5.3.1. If unknown cultural resources are encountered during the project, stop all work in the discovery area pending further investigation and consultation. If concealed archaeological resources are uncovered during project activities, take all necessary steps to protect them. Notify the COR and YOSE POC immediately upon their discovery.

5.3.2. If human remains, funerary objects, sacred objects, or objects of cultural patrimony are discovered during project activities, notify the COR and YOSE POC immediately upon their discovery. NPS will follow the regulations implementing the Native American Graves Protection and Repatriation Act (43 CFR Part 10).

5.4. Excavation.

5.4.1. Do not excavate soils during severe weather conditions (i.e., heavy rain and/or high winds).

https://www.biopreferred.gov/BioPreferred/faces/catalog/Catalog.xhtml

5.4.2. Remove monitoring well MW-2 IAW NTCRAWP

5.4.3. Conduct dust monitoring & dust control IAW NTCRAWP. Biobased dust control products are preferred; refer to BioPreferred|Catalog.

5.4.4. Segregate and manage excavated soil as non-hazardous, non-RCRA (Resource Conservation and Recovery Act) hazardous, or RCRA hazardous waste. Transport non-hazardous soils to an approved Class 3 landfill for disposal or use it as daily cover. Transport non-RCRA and RCRA hazardous soils to a licensed and properly permitted Class 1 disposal facility or an out-of-state facility permitted to accept hazardous waste.

5.4.5. Place soil from each Site in separate roll-off bin(s) or other NPS-approved containers pending waste characterization.

5.4.6. Label each container with the source Site.

5.4.7. Securely cover each container by close of each workday.

5.4.8. The Contractor shall not, at any time, expand or stockpile the contaminated soil outside of the safe work area zone.

5.5. Sampling.

5.5.1. Confirmation Sampling.

5.5.1.1. Collect confirmation samples at each DU as soon as practicable after the initial quantity of soil identified in the EE/CA has been removed from the DU. Compare the confirmation sampling results to the removal goals. If sidewall results meet the removal goals, no further contaminated soil removal and disposal is required.

5.5.1.2. If sidewall results exceed the RG, notify the YOSE POC, COR, and CO. The Contractor and NPS will develop an approach for continued soil removal and disposal with associated additional confirmation sampling. The CO will authorize additional quantities of CLINs 3 – 6 if necessary and exercise Option B in a unilateral contract modification. As noted on Figure 6 of the NTCRAWP, all excavations will be advanced to 4 feet below ground surface (bgs) and no deeper.

5.5.2. Stockpile Sampling.

5.5.2.1. Collect samples from stockpiled soil IAW the NTCRAWP and submit to a contract laboratory for analysis. These samples will characterize the soil for disposal as required by the disposal facility as non-hazardous, non-RCRA (Resource Conservation and Recovery Act) hazardous, or RCRA hazardous waste.

5.5.3. Baseline Groundwater Sampling.

5.5.3.1. Collect baseline groundwater samples before any DU excavations are begun, specifically before any monitoring wells are abandoned as part of the DU excavations.

5.6. Transportation.

5.6.1. Utilize a licensed transport, storage, and disposal (TSD) company, in good standing with the State of California to haul soil to appropriate waste facilities. The Contractor shall be responsible for verifying the TSD Company’s credentials.

https://www.biopreferred.gov/BioPreferred/faces/catalog/Catalog.xhtml

5.6.2. Submit the waste manifest / bill of lading to the YOSE POC and COR within two weeks of disposal and include a copy with the applicable progress payment request.

5.7. Response Action Completion Reports (RACR) & Fact Sheet.

5.7.1. Prepare RACR (draft and final) and Response Action Fact Sheet (draft and final).

5.7.2. Submit to the CO, COR, and YOSE POC for review and approval.

5.7.3. The RACR & Fact Sheet shall detail activities performed, include figures showing Site features and sampling locations, Site photographs (photographs shall be taken of the Site and surrounding area prior to, during, and after the removal of soil), results, conclusions, recommendations and “lessons learned”.

5.7.4. Submit the draft report and draft fact sheet within 30 days following the completion of field activities to the Contracting Officer. Submit the final report and final fact sheet within 10 days of receiving comments from the NPS to the Contracting Officer.

5.7.5. The contractor shall make a best effort to submit documents to the NPS that meet the accessibility standards per Section 508 of the Rehabilitation Act. At a minimum, if available in the particular software, the contractor shall enable the 508 accessibility checker or other similar features at document inception and use professional judgement throughout document production to best meet 508 accessibility standards.

5.7.6. The file names of the documents submitted to the NPS shall comply with the following naming convention: The file name transmitted to NPS shall be:

YOSE_ELCapitan_Document_Version_Date where:

5.7.6.1. "Document" is the abbreviated title of the document. Examples include:

5.7.6.2. Preliminary Assessment - "PA"

5.7.6.3. Site Health and Safety Plan - "SHASP"

5.7.6.4. Site Inspection Sampling and Analysis Plan - "SI SAP"

5.7.6.5. "Version" is the version of the document (e.g., "Draft" or "Final").

5.7.6.6. "Date" is the date signed by the contractor in the format of YYYYMMDD.

5.7.7. All draft and final deliverables shall be signed/stamped by the Environmental Professional before submitting to NPS.

5.7.8. All files shall be transmitted to the NPS via an agreed-upon secure file transfer method.

5.7.9. Submit documents or product cut sheets for NPS review via Transmittal Form CM-16.

6. Post-Removal Activity

6.1. Conduct Pre-Design Investigation (PDI) for in situ groundwater treatment IAW

NTCRAWP.

6.1.1. Prepare PDI Report, following standards in 5.7.6 – 5.7.9.

https://www.nps.gov/dscw/upload/TransmittalForm-CM16_10-7-20_v508_101420.pdf

6.1.2. Submit the draft report within 30 days following the completion of field activities to the Contracting Officer. Submit the final report within 10 days of receiving comments from the NPS to the Contracting Officer

6.2. Monitoring Wells and Groundwater Monitoring.

6.2.1. Install five monitoring wells as specified in the El Capitan NTCRA WP.

6.2.2. Groundwater Monitoring and In Situ Treatment.

6.2.2.1. Conduct groundwater monitoring (four events, one per quarter) and in situ treatment in accordance with El Capitan NTCRA WP and SAP.

6.2.2.2. Prepare Monitored Natural Attenuation (MNA) Workplan IAW NTCRA WP.

6.2.3. Submit the draft report within 120 days prior to installation of monitoring wells to the Contracting Officer.

6.2.3.1. Implement MNA.

6.2.3.2. Prepare MNA Report, following standards in 5.7.6 – 5.7.9.

6.2.3.3. Submit the draft report within 30 days following the completion of field activities to the Contracting Officer. Submit the final report within 10 days of receiving comments from the NPS to the Contracting Officer

7. Site restoration to Natural Condition.

7.1. At each DU, after excavation is complete and confirmation samples indicate RGs have been met, backfill IAW NTCRAWP.

7.2. Consult with the YOSE POC, who will get input from NPS restoration ecologist, hydrologist, and geologist to recontour the Site to blend with surrounding contours and to restore overflow channels and bring the surface of excavated areas to the desired grade.

7.3. Recondition excavated areas

7.3.1. YOSE POC will identify the in-park sources of the government-furnished soil. See NTCRAWP for additional details. Ensure soils from the source’s surface are placed in the bottom of the excavated area, as this will help prevent the spread of weeds.

7.3.2. If more clean soil is needed and if Option A is exercised by the NPS CO, import and place clean soil from NPS-approved weed-free source.

7.3.3. Mulch bare soils with at least one inch of stockpiled native litter and duff or collected native litter and duff from adjacent areas, leaving at least 0.5 inch in place at the borrow Site.

Mulch disturbed areas with wood chips, soil retention blankets, or native litter and duff.

7.4. Finish grading and cleanup shall be limited to that necessary to return the area to its natural condition and to control surface erosion.

7.5. Restore the former dump road to previous condition. Restore trail to previous conditions following park guidelines. The Site shall be restored IAW with specifications in the NTCRAWP and herein.

7.6. In the event the Contractor causes damage outside the approved disturbance area, The Contractor shall immediately notify the COR and YOSE POC. The Contractor shall restore damaged areas in accordance with CO direction, at no additional expense to government.

7.7. Before scheduling the pre-demobilization site inspection, remove all barriers, tools, equipment, surplus materials, and rubbish. Pick up all debris from the Site. At time of inspection of the removal action, the Site shall be thoroughly clean.

8. Site Inspection & Closeout.

8.1. Site Inspection. The contractor shall request COR and YOSE POC at least five days prior to desired date for pre-demobilization Site inspection. During the inspection, NPS will confirm that all on-site removal action requirements have been successfully completed. Do not request the inspection until confirmation sampling results demonstrate that the Site’s RGs have been met.

8.2. Close Out. Contractor shall submit deliverables specified herein prior to submission of final progress payment request to the CO, COR, and the YOSE POC.

9. Additional requirements for on-site activities

9.1. Hours of operations are 7 a.m. to 6 p.m. Monday through Friday. Weekend work and work on federal holidays will only be allowed when approved in advance by the Contracting Officer.

9.2. Resource Protection.

9.2.1. Prior to beginning Site work, Project personnel (managers, supervisors, and staff) will attend a resources protection briefing to become familiar with statutory and contractual environmental requirements and protection measures for archeological Sites, sensitive habitats, water resources, and wildlife. A YOSE representative will meet the contractors on site on the first work day to provide the briefing.

9.2.2. Do not feed or disturb wildlife within park boundaries. Always comply with food-storage and garbage disposal requirements. Suspend removal action activities when dangerous animals (mountain lions, bears, etc.) come near an active removal action area and create potential animal/human conflict. Notify the Park Representative or Park Ranger immediately for resolution of potential animal/human conflicts.

9.2.3. All project employees must be trained in proper storage of food and garbage before entering the job Site to protect wildlife from human food conditioning. All food and garbage will be stored in an approved manner unless being prepared or consumed, and even in those cases, it will be kept within arm's reach. Coolers will never be left in the back of open trucks. Food and trash will be removed from the project Site at the close of work each day. Food storage and trash systems must follow park regulations. Exceptions, such as open-top dumpsters for removal action materials must be approved by park wildlife staff (e.g., dumpster must be clearly marked and stored away from visitor pathways).

9.3. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair of the utility will be done at no additional expense to the Government. If damage occurs to an unknown utility, repair the utility. Equitable adjustment will be made in accordance with changes clause of the contract.

9.4. Adequately barricade and post access restrictions as required in public areas. Install barrier tape were directed by NPS Park staff. Always keep a minimum of two rolls on Site.

9.5. Contractor may close access through the work Site during work. Emergency access through the project Site during removal action activities must be provided within 15 minutes of notification. Access by air quality monitoring personnel must be allowed when pre-arranged during the workday.

9.6. A capable, competent, and qualified person shall be placed in charge of fire protection.

The responsibilities shall include locating and maintaining fire protective equipment and establishing and maintaining safe torch cutting and welding procedures.

9.7. Take all necessary precautions to prevent fire. Provide adequate ventilation during use of volatile or noxious substances. Equip all gasoline or diesel-powered equipment used in potential forest and grass fire locations with spark arresters approved by NPS. Provide one appropriately sized, inspected, and readily available fire extinguisher on each vehicle or piece of equipment.

9.8. Welding, torch cutting, or other flame/spark producing activities shall be performed only when adequate fire protection is provided.

9.9. Designated smoking areas must be cleared of vegetation, equipped with a 5-gallon bucket of sand, and posted as a designated smoking area. No smoking is allowed outside of designated areas.

9.10. The Contractor shall control the transfer of noxious weeds and plants into the park environment. The Contractor shall incorporate decontamination procedures for all vehicles, trucks, and equipment used at the Site. Vehicles and equipment will be inspected by Park Representative prior to entry into the park for mud, weeds, and other unwanted substances.

Steam clean earth-moving equipment (including haul vehicles) of mud and weed seed.

Subsequent entries of hauling vehicles will not require cleaning unless requested. Notify Park Representative a minimum of 48 hours prior to entry of vehicles and equipment.

9.11. Removal action equipment must have adequate mufflers and pollution emission controls.

9.11.1. We encourage the use of biobased hydraulic fluid in all earth-moving equipment (e.g.

excavator, bulldozer) to be used on-site. NPS may exercise Option C up to 30 days prior to mobilization.

9.12. All truck traffic and vehicle routes shall be selected to maximize worker and visitor safety and to minimize impacts on park operations. Refer to NTCRAWP Appendix B for additional transportation requirements. Disturbance of existing vegetation shall be minimized.

The Contractor will develop a within-Site traffic plan that will minimize disturbance between areas to be addressed under this removal action. Consult with park Vegetation staff to avoid impacts to special status species and potentially salvage and replant vegetation before and after the project. Large tree roots shall be cleanly cut, when encountered, to minimize damage to large trees and soil replaced over roots. Hazard trees will be pre-identified by the park forester prior to project implementation. Coordinate with park vegetation staff prior to project commencement to ensure the avoidance of existing research cross section markers along the riverbank adjacent to the project area.

9.13. Provide temporary barriers to protect existing trees, plants, and root zones. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Park Representative to get clearance to remove agreed-on roots and branches that interfere with removal action. Do not fasten ropes, cables, or guy wires to existing trees.

9.14. Carefully supervise excavating, grading, filling, and other removal action operations near trees to prevent damage.

9.15. Separate work areas, including material sources, using a dike or other suitable barrier so that sediment, petroleum products, chemicals, and other liquid or solid material do not enter waters of the U.S.

9.16. Do not operate or park equipment outside removal action limits or on topsoil areas, except as approved by Park Representative. Do not operate or store vehicles and equipment leaking oil, gas, or antifreeze within park boundaries. Do not drain oil, hydraulic fluids, antifreeze, or other chemicals onto ground within park boundaries. Completely contain diesel fuel at work Site. Clean up any spill immediately and notify COR and YOSE POC.

9.17. Every day prior to commencement of work all equipment will be inspected for leaks and repaired immediately. Do not use equipment that is leaking. Keep supply of acceptable absorbent materials at job Site in event of spills. Acceptable absorbent materials are those manufactured specifically for containment and cleanup of hazardous materials.

9.18. During excavation and soil loading activities, use a water mister/sprayer to suppress dust.

Cessation of work may be necessary during excessively windy conditions.

9.19. Take all necessary reasonable measures to reduce air and water pollution by any material or equipment used during Site work. Do not idle equipment not in use for more than 5 minutes.

Do not dispose of volatile wastes or oils in storm or sanitary drains. Do not allow waste materials to be washed into streams or bodies of water.

9.20. Constantly keep project Sites clean of debris during duration of project. Provide trash dumpsters with animal proof cover lids to contain debris. Collect and dispose waste material outside park boundaries. Provide enough containers for collecting debris. Keep project neat, orderly, and in a safe condition always. Keep volatile wastes in covered containers. Maintain all food products and scented products in bear proof containers.

9.21. Fill all trenches or holes larger than 10” deep at the end of each day. If this is not possible, all holes or trenches will be fitted with escape ramps or capped to prevent the entrapment of wildlife (e.g., rodents, frogs, toads, etc.).

9.22. No on-Site treatment of hazardous substances is allowed on park land.

9.23. Sanitary facilities – Provide sufficiently-lighted and ventilated toilet facilities and hand wash facilities for use by personnel.

9.23.1. Place in NPS-approved locations convenient to work area. Relocate if work progress requires.

9.23.2. Service and clean toilet and hand wash facilities at least weekly, or in compliance with requirements imposed by California and Mariposa County, whichever is more stringent.

9.23.3. Completely remove sanitary facilities on completion of work.

10. Contractor Staffing

10.1. The Contractor shall furnish sufficient technical, supervisory, and administrative personnel to ensure completion of the work as defined herein.

10.2. Contractor’s Project Manager (CPM).

10.2.1. Following award of this work order, the Contractor shall designate a CPM. The Contractor Project Manager shall be responsible for technical oversight of the work, overall product quality, preparation of invoices, monitoring of budgets and schedules, and maintaining timely and appropriate communication with the NPS Project Manager. The CPM must be an employee of the prime contractor and will be the primary liaison between the Contractor and the NPS PM and COR.

10.2.2. The Contractor Project Manager shall be supported by professional and skilled technicians who have experience in performing tasks/activities for the project as specified in this

SOW.

10.2.3. The CO, COR and YOSE POC shall be apprised in advance of any proposed changes in the CPM by the Contractor.

10.3. Operators of vehicles, mobile equipment, hoisting equipment, and hazardous plant equipment shall be able to understand signs, signals, and operating instructions, and be capable of operating such equipment. Provide operating instructions for all equipment.

10.4. All Site employees shall be HAZWOPER qualified per OSHA 29 CFR Part 1910.120(h) with current certification.

10.5. Field Sampling Specialists

10.5.1. Site sampling personnel shall be qualified and experienced in EPA methods and sampling protocols.

10.5.2. The Contractor shall provide a team of no fewer than two Field Sampling Specialists.

10.5.3. All Field Sampling Specialists shall have the proper training and certifications needed to conduct the work required for the project and to assure the field procedures are performed properly. All Field Sampling Specialists shall possess 40-hour OSHA hazardous waste operation (HAZWOPER) training/certification.

10.5.4. All Field Sampling Specialists shall have previous surface and near-surface soil/sediment sampling experience at other high-profile public sites within the CERCLA program.

10.5.5. The experience within the Field Sampling Team shall include gridding, collecting GPS coordinates, using hand-held samplers/tools and related equipment, sieving, preparing and packaging samples, preserving and shipping samples, recording data in field logbooks, and documenting sample chain-of-custody.

10.5.6. Field Samplers will sign and submit to the CO, COR and YOSE POC the Field Team Scope Acknowledgement Letter prior to field sampling.

10.6. Positions described in 10.7 through 10.10 are designated as key personnel.

10.6.1. All contractor work must be performed or overseen by these key personnel.

https://doimspp.sharepoint.com/sites/nps-NPS_ECCD_External_Communications/YOSE%20CERCLA%20Response/Forms/AllItems.aspx https://doimspp.sharepoint.com/sites/nps-NPS_ECCD_External_Communications/YOSE%20CERCLA%20Response/Forms/AllItems.aspx

10.6.2. If the key personnel are not employees of the prime contractor, the prime contractor shall allow the NPS COR to communicate directly with the key personnel regarding technical matters related to CERCLA implementation and documentation. The CPM will be invited to participate, but is not required to do so, and will be copied on all correspondence. All contractual matters will be handled between NPS and the prime contractor.

10.6.3. If a person is qualified, they may perform the duties of more than one key personnel position.

10.6.4. Contractor shall make every reasonable effort to provide advance notice to the COR of any changes to key personnel 30 days prior to an anticipated change. Contractor shall provide an equal or better candidate for CO and COR review. Recommended key personnel are not allowed to work on the project unless/until the substitution is accepted by the CO.

10.7. “Environmental Professional” as defined by 40 CFR Part 312.10 Paragraph (b)(1) and limited to those in 40 CFR Part 312.10 Paragraph (b)(2)(i) Hold a current Professional Engineer’s or Professional Geologist’s license or registration in California and have the equivalent of three (3) years of fulltime relevant experience.

10.8. Human Health Risk Assessor. The human health risk assessor must have all of the following as a minimum:

• Master’s degree in biological sciences or toxicology,

• Minimum 5 years of working experience in developing human health risk assessment data quality objectives, sampling design for human health risk assessment data needs, development of site-specific exposure parameters, conducting human health risk assessments, and the identification of uncertainties, including the applicability of toxicology studies. Consulting experience preferred.

• Demonstrated 5 years of working experience conducting Hazard Identification,

• Demonstrated 5 years of working experience conducting Dose-Response Assessments,

• Demonstrated 5 years of working experience conducting Exposure Assessments,

• Demonstrated 5 years of working experience conducting Human Health Risk Characterization,

• Demonstrated 5 years of working experience developing Preliminary Remedial/Removal Goals,

• Working knowledge of EPA risk assessment guidance and databases,

• Working knowledge of statistics, including development of statistically based sampling designs, use of Incremental Sampling Methodology (ITRC 2020 or latest) and associated statistics and decision mechanisms,

• Working knowledge of state and federal regulatory frameworks (RCRA, CERCLA, NEPA, NRDA, etc.),

• Experience with water quality issues and soil / sediment contamination, and

• Strong oral and written communication skills.

10.9. Ecological Risk Assessor. The ecological risk assessor must have all of the following as a minimum:

• Master’s degree in biological sciences or toxicology,

• Minimum 5 years of working experience in developing ecological risk assessment data quality objectives (DQOs), sampling design for ecological risk assessment data needs, development of site-specific exposure parameters for local ecological receptors, conducting ecological risk assessments, and the identification of uncertainties, including the applicability of toxicology studies. Consulting experience preferred.

• Demonstrated 5 years of working experience conducting Ecological Risk Characterization,

• Demonstrated 5 years of working experience developing Preliminary Remedial/Removal Goals,

• Working knowledge of statistics, including development of statistically based sampling designs, use of Incremental Sampling Methodology (ITRC 2012 or latest) and associated statistics and decision mechanisms,

• Working knowledge of EPA risk assessment guidance and databases,

• Working knowledge of state and federal regulatory frameworks (RCRA, CERCLA, NEPA, NRDA, etc.),

• Experience with water quality issues and soil / sediment contamination, and

• Strong oral and written communication skills.

10.10. Regulatory Specialist. The regulatory specialist must have all of the following qualifications as a minimum:

• Bachelor’s degree in Environmental Science, Biology, Chemistry, or another relevant field,

• In-depth knowledge of environmental requirements under federal regulations (RCRA, CERCLA, CWA, and CAA) and state regulations (especially for state in which the Site is located),

• Documented experience analyzing, interpreting, and applying environmental regulations for a variety of Site types for a minimum of two years, and

• Excellent written and verbal communication skills.

11. DEFINITION OF CONTRACT LINE ITEMS

Item 1: Contract support tasks (lump sum) includes tasks and documentation listed in all sections of this SOW and all activities not listed below.

Item 2: Mobilization, clearing/grubbing, dust monitoring & dust control, site restoration, and demobilization (lump sum) as described in portions of Sections 3, 5, 7, 8, and 9.

Item 3: Excavate soil (per ton) as described in portions of Section 5 (See EE/CA for estimated quantities). Payment will be for the actual quantity at the unit price per ton, subject to the

Variation in Estimated Quantity clause. Quantity will be measured and calculated by adding up weight tickets for disposal of non-hazardous and hazardous soils. The quantity of Item 3 will match the sum of quantities in Items 4, 5, and 6; it is estimated to be 15,430 tons.

Item 4: Transport and dispose of non-RCRA (California) hazardous soil (per ton) as described in portions of Sections 5 and 9. Payment will be for the actual quantity at the unit price per ton subject to the Variation in Estimated Quantity clause. Quantity will be measured by adding up weight tickets from disposal site and is estimated to be 4,930 tons.

Item 5: Transport and dispose of RCRA hazardous soil (per ton) as described in portions of Sections 5 and 9. Payment will be for the actual quantities at the unit price per ton subject to the Variation in Estimated Quantity clause. Quantity will be measured by adding up weight tickets from disposal site and is estimated to be 9,320 tons.

Item 6: Transport and dispose of non-hazardous soil (per ton) as described in portions of Sections 5 and 9. Payment will be for the actual quantity at the unit price per ton subject to the Variation in Estimated Quantity clause. Quantity will be measured by adding up weight tickets from disposal site and is estimated to be 1,180 tons.

Item 7: Sampling (lump sum) as described in Section 5.5, including confirmation sampling, disposal characterization, and groundwater sampling. Use quantities identified in the

NTCRAWP.

Item 8: Monitoring wells and groundwater monitoring (lump sum) as described in Sections 5 and 6.

OPTION A, Import and place clean soil (per cubic yard) as described in Section 7. Payment will be made at the unit price for the actual quantity of clean soil as indicated by vendor invoices.

Unit price shall include soil, transportation, placement, and contouring. Preference will be to exercise this option in 10-CY increments. (Note that loading, transportation, placement, and contouring of NPS-furnished soil is included in Item 2.) NPS may exercise Option A multiple times.

OPTION B, Additional soil confirmation samples (per each) as described in Section 5.5.1 and the NTCRA WP Section 10.6. Payment will be at the unit price for the quantity ordered. In addition, this option's unit price includes all necessary lab analyses plus the labor to collect and process the samples. NPS may exercise Option B multiple times.

OPTION C, Biobased hydraulic fluid in earth-moving equipment (lump sum) as described in Section 8.11.1. Includes sufficient quantity of biobased hydraulic fluid and labor to install (and remove, if required) it in appropriate equipment. Each machine may have its own lump sum price. NPS may exercise Option C multiple times (once per machine) and may elect to have some machines with biobased and others with standard hydraulic fluid. Acceptable products are listed at www.biopreferred.gov/BioPreferred/faces/catalog/Catalog.xhtml.