SOW_FINAL.pdf

STATEMENT OF WORK

FOR IMPACTED SOIL REMEDIATION

SEQUOIA AND KINGS CANYON NATIONAL PARK

SOLICITATION P15PS00830

1. INTRODUCTION. The National Park Service (NPS) has the responsibility under the

Comprehensive Environmental Response, Conservation and Liability Act (CERCLA) to determine if potential hazardous substances exist within each NPS unit. The results of an

Engineering Evaluation/Cost Analysis (EE/CA) have identified levels of lead in soil that require remediation. This Statement of Work (SOW) describes a remediation of impacted soil proposed for the NPS Sequoia and Kings Canyon National Park (SEKI).

2. BACKGROUND.

2.1. The NPS identified an old dumpsite during inspections of the Lower Kaweah area within the Giant Forest at Sequoia National Park. In 1998 and 2001

, two site investigations reported that materials present on the surface of the dump pile consisted of wood, concrete, asphalt fragments, and other debris. The contents of the dump fill consisted mostly of burn materials.

Some of the observed fill materials consisted of ash, metal, glass, sheet metal, porcelain, aluminum pans and pitchers, wire, pipes, metal paint cans, wood chips and roots.

2.2. The 1998 and 2001, Site Inspection (SI) and expanded Site Assessment (SA), respectively, indicated that CERCLA hazardous substances were present at elevated concentrations in materials and soils in the dump area. Because the exact locations of samples collected during both investigations are not clearly identified, and composite samples were collected mixing suspected clean soil with impacted soil, the extent of contamination was not clearly defined. This represents a gap in the Site characterization. The NPS and California

Department of Toxic Substance reviewed all available Site information and concluded that the SI and expanded SA did not completely characterize the nature and extent of contamination for purposes of conducting a Non-Time Critical Removal Action. To address these gaps in the characterization of contamination, NPS contracted Environmental Cost Management to prepare and perform a Work Plan to address the remaining data needs for a complete Site characterization and the preparation of the EE/CA Report.

2.3. Based on the information presented in the November 2014 EE/CA Report and previous investigations, it is recommended to implement Alternative 4, consisting of excavation and off-site disposal. Alternative 4 is the most protective of human health and ecological resources and it will eliminate the potential for environmental impacts, in the short- and long-term, immediately after completion, meeting all the evaluation criteria.

3. Scope.

3.1. General. The SOW for this project is a removal action at SEKI’s soil impacted area and restoration of the site to a natural condition. The Contractor shall submit a technical and cost proposal to perform all the requirements of this SOW to successfully complete the project, unless specifically identified as the responsibility of the NPS or the NPS-designated representative.

3.2. Work shall be performed under project-specific plans, developed by the Contractor. The plans and work shall conform to U. S. Environmental Protection Agency (USEPA) document

“Guidance on Conducting Non-Time Critical Removal Actions Under CERCLA”. No on-site treatment of hazardous substances are allowed on park land.

1 Kleinfelder, 1998.

2 Kleinfelder, 2002.

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

3.4. 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.

3.5. The Contractor Project Manager shall be responsible for technical oversight of the work, preparation of invoices, monitoring of budgets and schedules, and maintaining timely and appropriate communication with the NPS Project Manager. The Contractor Project Manager shall be supported by professional and skilled technicians with experience in performing tasks/activities for the project as specified in this SOW.

3.6. The NPS will administer the contract and project management, as needed. Data and information concerning site(s) at which work is to be done will be furnished upon contract award. Any such data and information is for the Contractor’s information and the Government shall not be responsible for any interpretation of or conclusion drawn from the data or information by the Contractor. NPS is responsible for and has completed the NEPA (National

Environmental Policy Act) compliance actions for the site.

3.7. All truck traffic and vehicle routes shall be coordinated with the NPS officials to establish safe and coordinated plans to minimize impact on park operations. Contractor is not permitted to travel beyond the construction site for any purpose.

3.7.1. Restoration to Natural Condition.

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

3.7.1.2. Disturbance of existing vegetation shall be minimized. 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.

3.7.1.3. Excavated areas may be reconditioned using park soils or weed-free, clean soils brought in from outside the park. Litter and duff will be removed from project areas and stored for later replacement over topsoil. Salvage and stockpile native litter and duff from the project site before disturbing soil. After excavation is complete, consult with the restoration ecologist to raconteur the site to blend with surrounding contours. Bare soils should be mulched with at least one inch of stockpiled native litter and duff, OR collect 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.

3.7.1.4. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to government.

3.7.2. Protect Cultural Resources.

3.7.2.1. If unknown cultural resources are uncovered during the project, all work will be stopped in the discovery area pending further investigation and consultation. If concealed archaeological resources are encountered during project activities, all necessary steps will be taken to protect them; notify the parks Cultural Resources Program Manager immediately upon their discovery.

3.7.2.2. In the event that human remains, funerary objects, sacred objects, or objects of cultural patrimony are discovered during project activities, the regulations implementing the

Native American Graves Protection and Repatriation Act (43 CFR Part 10) shall be followed.

4. Statement of Work. The procedures/activities associated with the soil removal and lead recovery would include the following tasks:

4.1. Task 1. Prepare Schedule and Conduct Conference Call. A schedule of activities shall be prepared and submitted to the NPS upon award of the contract.

4.2. Task 2. Prepare Project Plans/Action Plan, Site Specific Health and Safety Plan, and

Sampling and Analysis Plan. Provide activities and procedures/methodologies for all of the proposed field activities. The Health and Safety Plan shall include measures to protect personnel from lead exposure such as PPE, air monitoring, hygiene, medical surveillance, etc.

4.2.1. The Contractor shall prepare and submit for review a Sampling and Analysis Plan (draft and final) which follows the attached SAP Template for the field activities described below. The plan shall be prepared consistent with the USEPA guidance document (USEPA 1992). The SAP must be approved by the NPS prior to undertaking any fieldwork. The plan will include sections describing measures that the Contractor will follow to manage investigation-derived wastes.

4.3. Task 3. Excavation.

4.3.1. Excavation activities should be performed during the dry part of the year. Excavation of contaminated soils shall not be conducted during severe weather conditions (i.e. heavy rain and/or winds).

4.3.2. Prior to excavation, the Contractor shall complete and perform all notifications, permits, and compliance requirements to ensure a safe removal project. The excavation area shall be demarcated as a safe work zone, including delineation of wetlands and utility clearances. The

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

4.3.3. Prior to excavation, the Contractor shall evaluate the EE/CA report and, if necessary, perform additional soil sampling at the impacted area.

4.3.4. The proposed soil remediation activities comprise removing shallow soils from the impacted area. The excavation of the soil from the impacted area shall be performed as needed to remove contamination. The soil removal areas are shown on Figure 2.3 of the EE/CA document. Once removed, the removal of impacted soil shall be documented with confirmation samples collected from soil beneath and adjoining the excavated areas.

4.3.5. The impacted soil shall be placed in approved roll-off boxes or stockpiled on thick plastic sheeting on an impervious pad, and immediately covered to protect it from the elements (wind and/or rain) with similar plastic sheeting for temporary site storage prior to transport and disposal at a licensed facility. The Contractor shall handle, characterize, identify, label and package all waste (including but not limited to hazardous waste) generated as a result of the soil remediation in accordance with all applicable federal, state and local laws. The Contractor shall also be responsible packaging, labeling and preparing manifest and other shipping documents and will make all other necessary arrangements for any off-site transportation and disposal of such waste in accordance with laws. A licensed transport, storage, and disposal (TSD) company, in good standing with the State of California, shall be utilized. The prime contractor shall be responsible for verifying the TSD Company’s credentials. The waste manifest/bill of lading shall be sent to the Park within two weeks of disposal.

4.3.6. The Contractor is responsible for cleaning the entire impacted area of debris. In order to control the area of contamination, the Contractor shall not, at any time, extend or stock-pile the contaminated soil outside of the safe work area zone.

4.3.7. Confirmation soil samples should be collected along the bottom of every 20 linear feet of excavation sidewall, or every 400 square feet of non-linear excavation. Side wall and end wall samples should be collected using the same parameters; a minimum of five (5) samples should be collected to document completion of cleanup.

4.3.8. The EE/CA established a Site removal action objective (RAO) per Table C-4 (attached) within Appendix C of the EE/CA.

4.3.9. Soil samples shall be collected to document cleanup of soil to concentrations at or less than the ROA. Samples shall be analyzed as follows:

4.3.9.1. COCs established in EE/CA.

4.3.9.2. Metals by USEPA Method 6010B and 7471A (mercury)

4.3.9.2.1. Antimony, Arsenic, Barium, Cadmium, Chromium, Cobalt, Copper, Lead, Mercury, Molybdenum, Nickel, Selenium, Silver, Thallium, Vanadium, Zinc

4.3.9.3. Dioxins USEPA 8290 Dioxins (low-level MDL)

4.3.9.3.1. 2,3,7,8-TCDD

4.3.9.4. Organochlorine Pesticides USEPA 8081A

4.3.9.4.1. 4,4’-DDT

4.3.9.5. The analytical laboratory must be California certified to perform the analyses.

4.3.10. Pre-disposal characterization sampling of excavated soil can comprise one, four-point composite of stockpiled soil, if the total quantity of excavated soil is less than 1,000 cubic yards.

It is estimated that approximately 2,220 cubic yards (594 tons) of soil will need to be excavated at the Site. Cleanup confirmation samples should be analyzed for total lead content using EPA

Method’s described in 4.3.9.

4.3.11. Disposal characterization samples should be analyzed using the Soluble Threshold Limit

Concentration (STLC) and Toxicity Characteristic Leaching Procedure (TCLP) methods. The impacted soil should be protected from wind, rain or runoff until removed from the Site.

Impacted soil will need to be disposed at a Resource Conservation and Recovery Act (RCRA) landfill licensed to accept contaminated waste. Documentation of transport and disposal must be retained for the record of cleanup, and included in the report documenting cleanup.

4.3.12. The prospective analytical and sampling requirements for the constituents of concern are summarized in the attached table 1, Requirements for Containers, Preservation Techniques, Sample Volumes, and Holding Times.

4.3.13. Collection and analysis of confirmation samples following removal of contaminated soil.

A sufficient number of samples shall be collected to insure that clean soil conditions have been encountered. Samples shall be analyzed for total lead. Sampling software such as “Visual

Sampling Plan” or other site sampling programs should be utilized as deemed appropriate.

4.3.14. Note: Field sampling technology per USEPA approved methods (e.g., XRF) may be used during soil removal activities to provide real time analysis for lead to determine if clean conditions have been encountered to aid in directing field operations. Confirmation samples shall be submitted to a laboratory for analysis per USEPA method’s described in paragraph

4.3.15. Upon completion of the excavation, the Contractor shall test, confirm, and document the successful contaminate removal. Use a 24-hour turn around so we may verify test results confirm that the results are at or below the ROA.

4.4. Task 4. Composite Sampling. Composite samples shall be collected and submitted to a contract laboratory for analysis of TCLP lead. These samples will characterize the soil for disposal as required by the disposal facility.

4.5. Task 5. Site Survey. Not used.

4.6. Task 6. Meetings/Conference Calls. The contractor shall attend a preconstruction meeting at the park prior to the commencement of field activities and a closeout meeting following completion of field activities. The contractor may be required to attend up to three or more conference calls to coordinate/facilitate the work of this project.

4.7. Task 7. Reports. Summary written reports (draft and final) shall be prepared detailing activities performed, figures showing site features and sampling locations, site photographs

(Photographs. Photographs shall be taken of the Site and surrounding area prior to, during, and after the removal of soil from the range), results, conclusions, recommendations and “lessons learned”. The draft report shall be submitted within 30 days following the completion of field activities to the Contracting Officer. The final report shall be submitted within 10 days of receiving comments from the NPS. The final report shall be submitted to the Contracting Officer.

4.8. Task 8. Final Inspection & Closeout.

4.8.1. Prior to request for final inspection, the Contractor shall submit copies of sampling results from the testing laboratory, manifests and certificates of disposal for solid and hazardous waste and any other individual reports specified in individual sections for approval.

4.8.2. All plans and reports shall be submitted to the CO’s Representative (COR) at the address listed below and the appropriate personnel for SEKI. A copy shall also be submitted to the

Contracting Officer.

5. CONTRACTOR’S USE OF PREMISES.

5.1. Establishment of a camp within park will not be permitted.

5.2. Preservation of natural features: Confine operations to limits shown for project. Prevent damage to natural surroundings.

5.3. Provide temporary barriers to protect existing trees and 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 construction. Do not fasten ropes, cables, or guy wires to existing trees. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

5.4. Comply with regulations of the NPS, the United States Forest Service, the Fish and

Wildlife Service, or other authority having jurisdiction, governing the protection of land that includes or is adjacent to the project.

5.5. Existing Utilities: Notify Park Representative and utility companies of proposed locations and times for excavation. 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.

6. PARK SPECIFIC CONSTRUCTION REQUIREMENTS.

6.1. Work Day: Hours of construction 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.

6.2. Construction equipment must have adequate mufflers and pollution emission controls.

6.3. The Contractor shall incorporate decontamination procedures for all vehicles, trucks, and equipment used at the site to control and prohibit the transfer of noxious weeds and plants into the park environment. 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.

6.4. Constantly keep project sites clean of construction debris during duration of project.

Provide trash dumpsters with animal proof cover lids to contain construction debris. Collect and dispose waste material outside park boundaries. Provide enough containers for collecting construction debris. Keep project neat, orderly, and in a safe condition at all times. Keep volatile wastes in covered containers. Maintain all food products and scented products in bear proof containers.

6.5. 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.

6.6. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish. Restore or refinish surfaces that are damaged due to work of this contract to original condition. Pick up all construction debris from the site. At time of final inspection, project shall be thoroughly clean.

6.7. Do not feed or disturb wildlife within park boundaries. Bear density is high in this area.

Comply with food-storage and garbage disposal requirements at all times. Suspend construction activities when dangerous animals (mountain lions, bears, etc.) come near an active construction area and create potential animal/human conflict. Park Representative or Park Ranger will be notified immediately for resolution of potential animal/human conflicts.

6.8. Do not operate or park equipment outside construction 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.

6.9. 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.

6.10. Separate work areas, including material sources, by the use of 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. Use care in constructing and removing barriers to avoid discharge of material into, or siltation of, water. Remove and properly dispose of sediment and other material collected by barrier.

6.11. Quality Assurance: In case of conflicts between Federal, state, and local safety and health requirements, the most stringent shall apply. Equipment or tools not meeting OSHA requirements will not be allowed on the project sites. Failure to comply with the requirements of this section and related sections may result in suspension of work.

6.12. Qualifications of Employees: 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. All site employees shall be HAZWOPER qualified per OSHA 29

CFR Part 1910.120(h) with current certification. Site sampling personnel shall be qualified and experienced in EPA methods and sampling protocols.

6.13. Temporary Services.

6.13.1. 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.

6.13.2. Telephone - No telephone service is available on site for Contractor's use. There is no cellular phone service. Nearest reception is 5 miles from project site.

6.13.3. Water - No water is available on site for Contractor’s use. Contractor shall provide water for site use. Furnish cool, potable water for construction personnel in locations convenient to work stations.

6.14. Barriers.

6.14.1. Public Protection - Adequately barricade and post as required in public areas.

6.14.2. Barrier Tape - Install where directed by NPS Park staff. Keep a minimum of two rolls on site at all times. Contractor is responsible for removal of all barriers at conclusion of project.

Contractor may close access through the work site during the course of work. Access through the project site on the existing dirt road must be maintained at the end of each work day and when no work is performed. Emergency access through the project site during construction activities must be provided within 15 minutes of notification. Access by air quality monitoring personnel must be allowed when pre-arranged during the work day.

6.15. A capable 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.

6.16. Take all necessary precautions to prevent fire during construction. 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 extinguisher on each vehicle or piece of equipment.

6.17. Designate smoking areas. Designated area must be posted, will need to be cleared of vegetation and will require a 5 gallon bucket of sand.

6.18. Cutting by torch or welding shall be performed only when adequate fire protection is provided.

7. PERIOD OF PERFORMANCE AND SCHEDULE.

7.1. Project shall be fully completed within 365 calendar days.

7.2. The Contractor field work shall be conducted by an agreed upon date with SEKI and the

NPS COTR to provide the least interference to visitors and park activities.