B09_Attach_2_Lodgepole_WTP_Final_CD_Specifications21-04-23_0002.pdf

FINAL CONSTRUCTION DOCUMENTS SPECIFICATIONS

Water Treatment Project

At Lodgepole, SEKI-172423

Sequoia National Park | April 23, 2021

Architecture

Planning

Conservation

SEQUOIA NATIONAL PARK FINAL CONSTRUCTION DOCUMENTS

LODGEPOLE WATER TREATMENT PLANT APRIL 23, 2021

SEKI-172423 TOC-1

TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 Summary of Work

Appendix #1 – Mitigations List Form

Appendix #2 – Geotechnical Investigation Report

Appendix #3 – Clean Water Act 401 Water Quality Certification and Order

Appendix #4 – Radio Survey Report

01 26 01 Contract Modification Procedures

01 27 00 Definition of Contract Line Items

01 31 00 Project Management and Coordination

01 32 16 Construction Schedule

01 32 33 Photo Documentation

01 33 23 Submittal Procedures

Appendix #5 - Submittal List

01 35 23 Safety Requirements

01 35 50 Natural and Cultural Resources Protection

Appendix #6 - Silliman Creek Wetland Delineation Report

Appendix #7 – DRAFT 401 Silliman Creek Temporary Diversion Plan

Appendix #8 – MRA12 - Minimum Requirement Analysis Worksheet

01 40 00 Quality Requirements

Appendix #9 – Statement of Special Inspection Forms

Appendix #10 – CQC Accessibility Inspection Report

01 42 00 Reference Standards

01 50 00 Temporary Facilities and Controls

Appendix #11 - Hot Work Permit

01 57 19.11 Indoor Air Quality Management

01 57 19.12 Noise & Acoustics Management

01 57 23 Temporary Storm Water Pollution Prevention

01 67 00 Product Requirements

01 73 29 Cutting and Patching

01 73 40 Execution

01 74 19 Construction Waste Management and Disposal

01 77 00 Closeout Procedures

Appendix #12 - Closeout and OM Requirements

01 78 23 Operation and Maintenance Data

01 79 00 Demonstration and Training

01 91 00 Commissioning

DIVISION 02 - EXISTING CONDITIONS

02 41 00 Demolition and Salvage

02 82 13 Asbestos Abatement During Renovation / Demolition Operations

02 82 14 Asbestos Abatement Forms

02 83 33 Renovation / Demolition Operations with Lead-Containing & Lead-Based Paint

Appendix #13 – Limited Asbestos Survey & Lead-based Paint Inspection Report

DIVISION 03 – CONCRETE

03 30 00 Cast-in-Place Concrete

03 49 00 Glass-Fiber Reinforced Concrete

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DIVISION 04 – MASONRY

04 43 13 Stone Masonry Veneer

DIVISION 05 – METALS

05 12 00 Structural Steel

05 31 00 Metal Decking

05 41 00 Cold Formed Metal Stud Framing

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

07 13 00 Sheet Waterproofing

07 21 00 Thermal Insulation

07 25 00 Weather Barriers

07 41 13 Metal Roof Panels

07 46 46 Fiber-Cement Siding

07 51 00 Built-Up Bituminous Roofing

07 62 00 Sheet Metal Flashing and Trim

07 92 00 Joint Sealants

DIVISION 08 – OPENINGS

08 11 13 Hollow Metal Doors and Frames

08 31 13 Access Hatches

08 54 00 Composite Windows

08 91 00 Louvers

DIVISION 09 – FINISHES

09 21 16 Gypsum and Cementitious Backing Board

09 22 16 Non-Structural Metal Framing

09 90 00 Painting of Pipe and Equipment

09 91 13 Exterior and Interior Painting

DIVISION 22 – PLUMBING

22 05 00 Common Work Results for Plumbing

22 05 23 General Duty Valves for Plumbing

22 05 29 Hangers and Supports for Plumbing Pipe and Equipment

22 05 48 Seismic and Vibration Controls for Plumbing

22 07 00 Plumbing Insulation

22 10 00 Plumbing Piping Systems

DIVISION 23 – HVAC

23 05 00 Common Work Results for Mechanical Systems

23 05 29 Hangers and Supports for Mechanical Systems

23 05 48 Wind, Seismic, and Vibration Controls for Mechanical Systems

23 05 93 Testing, Adjusting, and Balancing for HVAC

23 07 00 Mechanical Insulation

23 08 01 Start-up, Testing, and Commissioning without Agent

23 11 23 Fuel Gas Piping and Accessories

23 13 23 Above Ground Propane Tank

23 31 00 Ducts and Accessories

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23 34 00 Fans

23 37 00 Air Outlets and Inlets

23 73 13 Modular Indoor Air Handling Units

DIVISION 26 – ELECTRICAL

26 05 00 Common Work Results for Electrical

26 05 19 Low-Voltage Electrical Power Conductors and Cables

26 05 26 Grounding and Bonding for Electrical Systems

26 05 33 Raceways and Boxes for Electrical Systems

26 05 48 Vibration and Seismic Requirements for Electrical Systems

26 24 16 Panelboards

26 27 26 Wiring Devices

26 28 16 Enclosed Switches and Circuit Breakers

26 36 00 Transfer Switches

26 41 13 Lightning Protection for Structures

26 43 13 Surge Protective Devices For Low-Voltage Electrical Power Circuits

26 51 00 Interior Lighting

26 56 00 Exterior LED Lighting

DIVISION 31 – EARTHWORK

31 05 25 Utility Line Marking

31 11 00 Site Clearing

31 11 01 Restoration of Surfaces

31 22 00 Topsoiling and Finished Grading

31 23 00 Earthwork for Structures

31 23 16 Rock Removal

31 23 33 Utility Trenching and Backfilling

31 37 00 Riprap

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 12 16 Asphalt Pavement

32 16 00 Walkways

32 29 00 Seeding

DIVISION 33 – UTILITIES

33 02 01 Pipe and Pipe Fittings: General Statement

33 02 02 Pipe Support Systems

33 03 01 Pipe: Steel

33 03 02 Pipe: Ductile Iron

33 03 03 Pipe: Plastic Pressure (PVC)

33 03 04 Pipe: Plastic Sewer (PVC-S)

33 03 05 Pipe: High Density Polyethylene (HDPE)

33 03 08 Pipe: Tubing

33 04 01 Openings and Penetrations

33 05 13 Manhole and Vault Structures

33 12 19 Fire Hydrants

33 13 00 Disinfection of Water System

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SEKI-172423 TOC-4

DIVISION 40 - PROCESS INTEGRATION

40 03 00 Wedge Wire Screen Diversion Box

40 05 01 Valves General Statement

40 05 63 Gate Valves

40 05 64 Butterfly Valves

40 05 65 Check Valves

40 28 02 Specialty Valves

40 61 13 Process Control System General Provisions

40 61 21 Process Control System Testing

40 61 26 Process Control System Training

40 61 93 Process Control System Input / Output List

40 61 96 Auxiliary Process Control Descriptions

40 63 43 Programable Logic Controllers

40 63 45 Data Logger and SCADA Communication Gateway

40 66 56 Point-to-Point Radio Equipment

40 67 00 Control System Equipment Panels and Racks

40 68 13 Process Control HMI Software

40 68 15 Process Control SCADA Software

40 68 66 Programming of Controller Software

40 71 13 Magnetic Flow Meters

40 71 79 Flow Switches

40 72 76 Level Switches

40 73 25 Absolute-Press Transmitters

40 74 13 Resistance Temperature Devices

40 75 05 Multi-Parameter Analyzers System

40 75 13 pH-ORP Analyzers

40 75 21 Chlorine Analyzers

40 75 53 Turbidity Analyzers

DIVISION 43 – PROCESS LIQUID HANDLING

43 22 10 In-Line Mixers

43 25 01 Pumps – General Statement

43 25 02 Pumps - Submersible

43 25 03 Pumps - Vertical Turbine

DIVISION 46 – WATER EQUIPMENT

46 00 05 Basic Equipment, Materials and Methods

46 07 13 Packaged Water Treatment Equipment

46 07 14 Packaged Water Treatment Plant Covers

46 33 44 Chemical Metering Pump System and Accessories

APPENDIX

1. Limited Asbestos Survey & Lead-Based Paint Inspection Report

2. Wetland Delineation for Silliman Creek Water Intake Project

3. Geotechnical Investigation Report and Supplemental Letter

4. Jar Testing Memorandum

5. Radio Site Survey

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LODGEPOLE WATER TREATMENT PLANT APRIL 23, 2021

SEKI-172423 01 11 00 - 1

SUMMARY OF WORK

SECTION 01 11 00 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Work covered by the Contract Documents.

2. Work phases.

3. Work under other contracts.

4. Government Furnished Materials.

5. Contractor use of premises.

6. Public use of site.

7. Occupancy requirements for buildings.

8. Work Restrictions.

9. Special Construction Requirements.

10. Soils Investigation Report.

11. Additional Reports.

12. Mitigation Measures.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: Lodgepole Water Treatment Plant, Sequoia National Park, California.

1. Lodgepole: Approximate Elevation = 6,600 to 6,800 feet.

2. Silliman Raw Water Intake: Approximate Elevation = 7,200 feet.

a. Access to the Silliman Raw Water Intake site will be via pack animal. Access is from either the Wuksachi northeast parking lot or from the Lodgepole Twin Lakes Trailhead. Access to the site from either location is approximately one mile on trail.

Two bridges and several switchbacks are encountered entering from Wuksachi;

three small creeks are encountered entering from Lodgepole.

3. Snow may restrict access to some locations throughout the year due to lingering snow, especially from November through May. In the remaining months, a snowfall does not tend to remain for more than a day

B. The Work consists of PMIS SEKI-172423, SEKI-194297, SEKI-256136 and SEK-257437 as the following:

1. Construction of a new Lodgepole water treatment plant, in a new building for a complete and operational system, and includes site improvements and utilities work.

2. Decommission and removal of the existing treatment plant equipment, and rehabilitation of the building.

3. Connection to the existing 6” water line at Generals Highway with a new 4” water line, including service connections and all appurtenances up to and including connection to the new Water Treatment Plant building. Includes demolition and improvements to the Wolverton interconnection vault, piping and appurtenances.

LODGEPOLE WATER TREATMENT PLANT APRIL 23, 2021

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SUMMARY OF WORK

4. Rehabilitation of the Silliman Creek water intake facilities.

5. Provision of design and construction by power and telecom companies for new electrical service to Water Treatment Plant facility and for relocation of existing telephone line.

6. Excavation of rock for new building foundation and utility trenches in Giant

Forest/Pinewood area/Generals Highway area.

7. Refer to Section 01 27 00 for bid options.

C. Project will be constructed under a single prime contract.

1.3 WORK PHASES

A. The Work shall be conducted in phases so as to maintain operation of the water treatment system in good condition throughout construction. Refer to drawings for Phasing Plan.

1.4 CONTRACTOR USE OF SITE

A. General: Contractor shall have full use of the designated site for construction operations during the construction period. Contractor's use of the site is limited only by the Government's right to perform work or to retain other contractors on portions of Project.

B. Storage of Materials: Confine storage of materials to areas indicated on drawings.

C. Preservation of Natural Features:

1. Refer to Specification Section 01 35 50 Natural & Cultural Resources Protection.

D. Driveways and Entrances: Keep driveways, pathways, and entrances serving premises clear and available to Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

1. Schedule deliveries to minimize use of driveways and entrances.

2. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

E. Construction Camp: Establishment of a camp within the park will not be permitted.

F. Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park roads may be obtained from the Office of the Park Superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment.

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SUMMARY OF WORK

1.5 PUBLIC USE OF SITE

A. The main site containing the treatment plant will be closed to the public during construction.

Roadways where work will occur shall remain open to the public.

1.6 OCCUPANCY REQUIREMENTS FOR BUILIDINGS

A. Existing Buildings

1. Full Government Occupancy: Government will occupy the existing water treatment building and structures adjacent to the new water treatment building during the entire contract period. Cooperate with Government during construction operations to minimize conflicts and facilitate Government usage. Perform the Work so as not to interfere with Government's day-to-day operations. Maintain existing exits, unless otherwise indicated.

a. Maintain existing building in a weather tight condition throughout construction period. Repair damage caused by construction operations. Protect building and its occupants during construction period.

1.7 CONDUCT OF OPERATIONS

A. At all times the contractor shall conduct operations in conformance with the rules and regulations promulgated by the Secretary of the Interior for the National Park Service, and applicable park rules and regulations prescribed by the Park Superintendent.

B. Work on Saturdays, Sundays, Federal holidays or at night may not be performed without prior consent from the Contracting Officer. Submit requests 48 hours in advance of the work to the Contracting Officer for approval.

C. No signs or advertisements (except those specified herein) shall be displayed on the construction site or within the park unless approved by the Contracting Officer.

1.8 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of 8:00 a.m. to 5:00 p.m., Monday through Friday, except when otherwise indicated.

1. If weekend, evening, or early morning hours are needed to complete project on schedule, Contractor shall obtain approval for hours proposed from CO.

2. Hours for drilling or other noisy activities: 8 a.m. to 5 p.m., Monday through Friday.

B. Existing Utilities

1. Existing Utilities: Notify Contracting Officer and utility companies of proposed locations and times for excavation.

2. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

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SUMMARY OF WORK

3. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be made in accordance with the Changes clause of the contract.

C. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify Contracting Officer not less than 5 days in advance of scheduling any proposed utility interruptions.

2. Do not proceed with utility interruptions without Contracting Officer’s written permission.

3. Utility interruptions are limited to 2 hours unless approved by Contracting Officer.

D. Nonsmoking Building: Smoking is not permitted within the building or within 25 feet of entrances, operable windows, or outdoor air intakes.

1.9 SPECIAL CONSTRUCTION REQUIREMENTS

A. Project Website: A project website administered by the NPS will be used for purposes of managing communication and documents during the construction stage.

1. See Section 01 31 00 “Project Management and Coordination” for requirements on using the Project Website.

B. Rain, seasonal snow, and snowmelt flooding may interfere with construction at the Work location and in the Park. Snow plowing of main access routes into Lodgepole will be performed by the Government only when required for public safety or convenience. Plowing of access roads to and within the Project work area is the responsibility of the Contractor.

C. Timing of the work at Silliman Intake needs to be coordinated with NPS to address wetlands and seasonal concerns. Contractor shall develop Wilderness Minimum Requirements Analysis including timing of work associated with the intake.

D. The Park or Park roads may be closed by the Government during emergencies. Park roads are frequently congested by tourist traffic during the summer months, weekends, and holiday periods.

The Contractor shall take into consideration operational limits on site access.

E. Work Plan: Please also see requirements including submittal requirements documented in the Commissioning Specification 01 91 00.

1. Remote Access – The Silliman Intake improvement site has no vehicular access and mechanized transportation is prohibited. Access is via rugged hiking trails. Contractor may request the use of permitted Mule Packers to deliver material and equipment to site. Packers must have prior approval from the Park. Contractor shall be responsible to repair the trails for any damages caused by construction activity.

a. A list of Mule Packers provided by NPS SEKI can be found with this link:

https://www.nps.gov/seki/getinvolved/guideservices.htm

2. Contractor shall verify all dimensions, elevations, and locations of existing piping, utilities, equipment, and structures.

https://eur01.safelinks.protection.outlook.com/?url=https://r.xdref.com/?id=07JGXtN5006480&from=william_mchugh@nps.gov&to=d.cooper@argsf.com&url=https://www.nps.gov/seki/getinvolved/guideservices.htm&data=01%7C01%7CStephanie.Douglass@mottmac.com%7C4e6e00102bef4c3fe4a808d848740177%7Ca2bed0c459574f73b0c2a811407590fb%7C0&sdata=edoGQb+zti1OW4kPK6FDn+l4lYYptffffd2aiffhw4o=&reserved=0

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SUMMARY OF WORK

3. Construction operations will be scheduled to allow the Government uninterrupted operation of existing adjacent facilities. Coordinate connections with existing work to assure timely completion of interfaced items.

4. At no time shall Contractor or his employees modify operation of the existing facilities or start construction modifications without approval of the Contracting Officer except in emergency to prevent or minimize damage.

1.10 MITIGATION MEASURES

A. Contractor shall adhere to the mitigation measures identified in “Mitigations List Form” attached at the end of this section.

1. Refer also to required permits listed in Section 01 31 00 Project Management and Coordination.

1.11 SPECIAL CONSTRUCTION REQUIREMENTS

A. Contractor shall complete pre-construction walk-through with the CO to verify all water line alignments, particularly along Generals Highway.

B. State of California Department of Public Health (CDPH) Drinking Water permits to operate shall be obtained by the Park using test reports and other documentation provided by the Contractor before the end of the contract. This shall include completion of required CDPH inspections.

1.12 ADDITIONAL REPORTS

Copy of these reports is available to all plan holders with this package. If conflicts occur between the report and drawings or specifications, the drawings and specifications govern.

A. A Geotechnical Engineering Investigation report dated November 11, 2018 and a Supplemental Letter dated February 21, 2020, and a Supplemental Letter dated Aril 3, 2020 were prepared by Kleinfelder, and is included as Appendix #2 at the end of this Section.

B. A report entitled Limited Asbestos Survey & Lead-Based Paint Inspection Report dated February 20, 2020 was prepared by T. Brooks & Associates, Inc. and is included as Appendix #11 attached at the end of section 02 83 33 Renovation / Demolition Operations with Lead-Containing & Lead- Based Paint.

C. A Radio Site Survey Report dated March 12, 2020 was prepared by Apply Technology.

D. A Jar Testing Laboratory Report dated March 26, 2020 for the existing Lodgepole water treatment plant was prepared by Seaco Technology.

E. Mitigations measures are identified in “Mitigations List Form” as Appendix # 1 attached at the end of this section.

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SUMMARY OF WORK

F. A Wetland Delineation for Silliman Creek Water Intake Project was prepared by Evan Wolf, PhD, Applied Ecohydrology Institute, dated November 2019, and is included as Appendix #4 at the end of Section 01 35 50 Natural and Cultural Resources Protection.

G. Silliman Creek Temporary Diversion Plan prepared by Provost & Pritchard Consulting Group in November 2020 is included as Appendix #5 at the end of Section 01 35 50 Natural and Cultural Resources Protection.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 01 11 00

National Park Service U.S. Department of the Interior

Sequoia and Kings Canyon National Parks Date: 10/23/2020

Mitigations List Form

Date: October 23, 2020

General

• All applicable mitigations and best management practices outlined in the 2011 Environmental

Assessment/FONSI (32626) REHABILITATION OF A WATER DISTRIBUTION SYSTEM in Giant Forest, Wolverton, Lodgepole, Wuksachi, and Red Fir areas must be implemented. See Mitigations Common to Alternatives B&C, pages 36-41 and Appendix D, pages 107-108.

Assessment of Effect

• An archeological monitor shall be present during all ground disturbing activities at Silliman Creek.

Comment: Due to the proximity of an historic archeological site near the Silliman Creek ground disturbance, an archeological monitor will be present for all ground disturbing activities in this area.

• Should unknown archeological resources be encountered during project implementation, work would be halted in the discovery area, the site secured, and the parks' archeologist notified. The parks' archeologist or a qualified representative will examine the area as soon as possible and will follow the requirements of the NHPA, and any other applicable cultural resource laws, as needed. Work could resume only after an appropriate mitigation strategy is developed in consultation with the California SHPO and after archeological clearances are obtained.

• In compliance with the Native American Graves Protection and Repatriation Act (NAGPRA), the NPS would notify and consult concerned Native American tribal representatives for the proper treatment of human remains, funerary, and sacred objects should these be discovered during the project.

• Construction workers and supervisors would be informed of the special sensitivity of park values, regulations, and appropriate housekeeping. All contractors would be informed of the penalties for illegally collecting artifacts or intentionally damaging any archeological or historic property by construction crews. Construction workers and supervisors would be advised of the laws and guidelines and special sensitivity to ensure protection of cultural resources.

Comment: Consider including a brief presentation by CR staff at the pre-construction meeting with the contractor.

Water Quality & Hydrology

• This project is subject to SEC. 404. [33 U.S.C. 1344], and SEC. 401. [33 U.S.C. 1341]) of the Clean Water

Act; requiring that water quality permits and certifications be obtained. As such, the project leader must obtain necessary permits and certifications prior to being granted final authorization to proceed with project implementation. The project lead is responsible for implementing all permit and water quality certification requirements. The parks' Environmental Planning and Compliance Office can assist with obtaining permits and certifications if needed.

• For project work proposed in wetlands and/or waterways, water quality certification or notification may be needed from the Corps of Engineers and/or the Regional Water Quality Control Board. For example, projects involving installations in wetlands/creeks; or, disturbance to streambeds, may require water quality permitting.

• Because work must be conducted within the delineated wetland boundaries, measures to minimize impact would be taken, such as laying down temporary boards or logs to walk across the wetlands without disturbing the plants or soil.

• Care will be taken to avoid walking through or disturbing the ground or vegetation in areas delineated as wetlands and/or potential Waters of the U.S.

K.Champion Text Box Appendix #1

Vegetation

• Plants will be stockpiled on a single layer on a tarp and replanted in the same location as soon as possible

• Since digging must be done within the wetlands, soil will be stockpiled on a tarp and replaced as quickly as possible. Similarly, any plants that need to be removed will be excavated whole, not chopped apart, with the root mass intact and in as large a soil bulk as possible.

Soils, Topography, Geology

• The area will be restored after project activities are completed and the water diversions removed.

• No imported fill will be used for the temporary water diversion.

Wildlife - Fisher

• To the extent feasible, maintain all high quality trees (i.e., trees with broken tops, cavities, large branches, or other deformities that occur in high quality habitat, especially live hardwoods >20 inches in dbh, live conifers >30 inches in dbh, dead hardwoods >27 inches in dbh, and dead conifers >35 inches in dbh).

• To the extent feasible, maintain all potential natal and maternal den trees and resting sites.

• Maintain and enhance desired stand-level characteristics in suitable habitat.

• Maintain and enhance habitat heterogeneity within and between core habitat areas.

• To the extent feasible, maintain and enhance cover between habitat patches to allow for connectivity.

• To the extent feasible, avoid habitat modifications or disturbance-causing activities within potential or high-quality denning habitat during the denning season.

• Store food and anthropogenic garbage in Park-approved containers so fishers cannot obtain it.

• Ensure construction fencing allows for the safe passage of fishers and does not cause entrapment.

• Teach work crews how to identify a fisher and den trees before work begins. Instruct them to contact the Park Wildlife Biologist immediately if a fisher is seen in or near the project site. If a fisher is spotted within a construction site, work will cease until the animal moves on without harassment. If a fisher is spotted in a potential den tree, work will cease, and the Park Wildlife Biologist will be contacted. The wildlife biologist will contact the Service for further guidance.

• Retrofit pipes, water tanks, and other such structures with capping, screening, and escape ramps to avoid entrapment of wildlife. • Maintain or remove old tanks, pipes, and irrigation canals.

• Avoid expansion of footprints of existing development in suitable fisher habitat. Do not install new developments in high quality fisher habitat.

• Avoid outdoor maintenance or construction of developments and infrastructure within potential or high quality denning habitat from March 1 to June 30 if it will cause disturbance. This LOP can be lifted on June 1 if pre-project surveys document absence of fisher. This LOP may otherwise be waived or modified if the Park Biologist determines that the project is unlikely to result in breeding disturbance due to the intensity, duration, timing, and specific location of the activity.

Wilderness

• Appropriate actions should be taken to protect wilderness character. Any mechanized equipment use, or other Section 4(c) prohibitions, shall be analyzed for compliance with the Wilderness Act. Prepare a minimum requirement analysis as soon as practicable and submit to the Wilderness and Compliance offices allowing at least 3 weeks for review.

Comment: MRA needed to address activities at Silliman Creek intake with potential to impact wilderness character. Depending on activities, development of alternatives may not be needed (2-part MRA).

Park Operations & Mgmt

• Provide coordinates of new or relocated NPS infrastructure to the GIS/ Data Management Office upon project completion. Contact the GIS Coordinator at 559-565-3725 for more information.

LODGEPOLE WATER SYSTEM MITIGATION MEASURES

Mitigation measures are designed to prevent or minimize adverse impacts or to contain impacts within acceptable limits during and after project implementation. The following are guidance and mitigation measures that would be incorporated into project implementation.

General Measures

Construction zones outside of the existing disturbed area would be identified and fenced with construction tape or some similar material prior to any construction activity. The fencing would define the construction limits and confine activity to the minimum required for construction.

All protection measures would be clearly stated in the construction specifications/ special construction requirements, and workers would be instructed to avoid conducting activities beyond the construction limits, as defined. This does not exclude necessary temporary structures such as erosion control fencing.

All tools, equipment, barricades, signs, surplus materials and rubbish would be removed from the project work limits upon project completion. Any asphalt surfaces damaged due to work on the project would be repaired to original condition. All demolition debris (e.g., old water lines, appurtenances, water tanks, valves, packaging materials, trash) would be disposed of at appropriate areas outside the parks’ or stockpiled at approved locations within the parks’ to be used in future projects. When possible, debris would be disposed of at a materials recycling facility.

A hazardous spill plan would be in place, stating what actions would be taken in the case of a spill, notification measures, and preventive measures to be implemented, such as the placement of refueling facilities, storage, and handling of hazardous materials, etc. Any spills of hazardous materials, fuel, etc., would be immediately reported to the parks’ hazardous material spills and safety officer.

Where appropriate and available “environmentally friendly” grease, hydraulic oil, and bar and chain oil would be used. These lubricants are vegetable or mineral oil based, less toxic, and biodegradeable.

All equipment on the project would be maintained in a clean and well-functioning state to avoid or minimize contamination from automotive fluids and inspected prior to entering the parks. All equipment would be checked daily by the contractor and documented in daily reports.

Site designs and plans for future actions identified in this EA/AoE, would be reviewed for consistency.

Additional compliance would be initiated if activities go beyond the scope of this document, or if unforeseen issues arise.

Soils and Vegetation

Staging areas for materials and construction equipment, storage, and turnarounds would utilize previously disturbed areas to the greatest extent practicable.

Pressure wash equipment to remove all dirt and plant parts before entering the park for the first time, paying special attention to undercarriage and grill/radiator; subsequent entries would not require pressure washing unless the vehicle shows signs of mud, plant material, or other substances that could be considered harmful. The NPS Project Manager would inspect equipment for compliance prior to entry into the park, and reject equipment that is not adequately clean.

Remove existing populations of invasive non-native vegetation prior to project activities, and conduct appropriate monitoring and follow-up treatment after project completion.

Sources of rock, sand, gravel, earth, soil, or other imported natural material may be inspected for invasive non-native plants prior to acceptance. The contractor shall submit to the NPS Contracting Officer a list of proposed sources for import materials 30 calendar days in advance of importing material. The list shall also include the end use and any temporary storage requirements of those materials. NPS Natural Resources staff would inspect sources of materials that pose a risk, either by their end use or storage requirements, of allowing invasive non-native plants (also known as noxious weeds) to establish in the park. Materials may be rejected if non-native invasive plants are present at the source and seeds could be present in the material. At the discretion of the NPS Contracting Officer, potentially contaminated materials may be accepted if mitigating measures are implemented. Mitigation might include stripping the top 12 inches of source material, requiring fresh material stored less than 1 month, or sterilizing the material. Contaminated materials that contain fines and have an end-use on the surface would require sterilization before importing to the park. Import material shall be shipped directly from the source to the park without intermediary storage or staging. Shipping vessels shall be covered to prevent spillage or blowing of their contents while in transit. Materials must also be transported and stored such that they would not acquire invasive non-native plant seeds from adjacent vegetation.

Damage to residual vegetation would be avoided or minimized by: proper type and size of equipment;

pre-identification of travel routes; protective barriers around individual and group of trees; hand-digging under high value (e.g. sequoia) trees; and, contract penalty clauses for tree and vegetation damage.

Any trenching operations (e.g. installing and accessing water lines, replacing water storage tanks and vaults) would be located to minimize disturbance to established vegetation and avoid large diameter trees to the extent possible. Equipment would be used that allows the operator to detect the presence of tree roots prior to damaging them. Roots less than 4 inches in diameter would be given a clean straight cut to prevent root rot. When roots 4 inches in diameter and larger are encountered during trenching operations, they would be retained by hand-digging the trench beneath the root. As the trench is dug, the excavated material would be stored adjacent to the disturbed areas. After trenching is completed, bedding would be placed and compacted in the bottom of the trench and the pipe installed in the bedding. Backfilling and compaction would begin immediately after the pipe is placed into the trench, and the trench surface would be returned to preconstruction contours.

All trenching restoration operations would follow guidelines approved by park staff. These guidelines would minimize disturbance to soils and vegetation from construction activities, and would restore affected areas to their original form wherever possible. Excavated material would be windrowed in the construction zone. Although soil windrowed during construction is susceptible to some erosion, such erosion would be minimized by placing silt fencing, as required, adjacent to the excavated soil. Excavated soil would be windrowed only as long as it takes to dig the trench and install the water line. Further, once construction is completed and disturbed surfaces recontoured, erosion mats or other erosion control measures would be used to protect bare, exposed soils from erosion until revegetation takes place.

Standard erosion control measures such as silt fences and/or sand bags would be used to minimize any potential soil erosion. Silt fencing fabric would be inspected weekly or after every major storm.

Accumulated sediments would be removed when the fabric is estimated to be approximately 75% full.

Silt removal would be accomplished in such a way as to avoid spillage.

Excess material removed (e.g. water line pipes, appurtenances, rock, soil) would be disposed of at appropriate areas outside the park or stockpiled at park approved upland locations within the park to be used in future projects. Fill material needed beyond that produced from construction activities would be taken from park-approved sources outside the park. If there is a need to import topsoil, such topsoil would be certified free of noxious plant species and imported from sources approved by park resource management staff.

Vegetation impacts and potential compaction and erosion of bare soils would be minimized by salvaging topsoil from disturbed areas. Topsoil would be removed from these areas of construction, stored, and replaced at the end of the project. Soil would be de-compacted without harming major tree roots, before placing topsoil. The topsoil would be re-spread in as near the original location as possible.

Litter and duff would be removed from project areas and stored for later replacement over topsoil.

In an effort to avoid introduction of non-native plant species, no hay bales would be used during revegetation or for temporary erosion control.

A revegetation strategy would be developed for disturbances outside of existing road corridors. All disturbed areas would be restored as nearly as possible to preconstruction conditions shortly after construction activities are completed. The NPS Natural Resources staff would be consulted prior to any reseeding or replanting efforts.

Revegetated areas would be frequently monitored for success rates and to ensure that erosion is not occurring. Remedial actions would be implemented, as necessary, and could include installation of additional erosion control structures, reseeding and/or replanting areas, and controlling non-native species.

Prior to construction activities associated with the water diversion structures, a vegetation survey would be completed to identify the presence of any plant species of management concern.

Staging areas and project work areas would be surveyed for invasive non-native plants one to three years after project completion.

Water Resources

Storing of hazardous materials and fueling of all tools and equipment would be restricted to park-approved equipment staging areas. Spilled hazardous materials would be cleaned up immediately and would not be allowed to seep into the soil or reach open water sources.

Construction crews would use appropriate methods for human waste treatment.

Standard erosion-control measures and sedimentation control would be implemented to minimize impacts to water quality.

Water needed for construction and dust control would come from the existing developed water systems within the parks and would not be diverted from streams.

A monitoring strategy would be developed for the water systems on Silliman and Wolverton Creeks.

Current technology would be integrated into the design of the new structures to allow for the monitoring of water flows. This monitoring program would help the parks determine the levels of acceptable withdrawals under different precipitation regimes.

Wetlands

Wetland Protection Best Management Practices (Appendix D) would be adhered to.

Wildlife

A litter control program would be implemented during construction to eliminate the accumulation of trash. All food would be stored in bear proof containers except when it is being consumed. Food stored in vehicles would be in bear proof containers. Spilled food would be cleaned up. Visitors in traffic delays would be educated by NPS staff, when available, to not approach or feed wildlife.

Air Quality

Dust control would occur, as needed, on active work areas where dirt or fine particles are exposed.

Idling regulations must be followed and exceeded if possible. The Contractor would not leave vehicles idling for more than five minutes when parked or not in use.

Soundscapes

Most construction activity would be limited to daylight hours. Some night work may be necessary for installation of the waterline within the roadbed of Generals Highway. To minimize visitors’ and residents’ exposure to unnatural sounds, construction near campgrounds, lodging, and employee housing areas would occur during daylight hours.

Construction-related noise would be mitigated through use of state-of-the-art noise reduction technology on construction equipment to the maximum extent possible, to minimize the amount of noise from construction activities.

Contractors would be required to properly maintain construction equipment (i.e., mufflers) to minimize noise from use of the equipment.

Visual Resources

Any appurtenances and buildings would have design features to soften their appearance and blend into the surrounding terrain. Areas disturbed by project activities would be revegetated and rehabilitated to pre-work conditions. New structures would comply with the parks’ Architectural Character Guidelines.

Recycled products would be used when possible. Nontoxic products would be used and design would strive for a high level of energy efficiency.

Any lighting, such as security lighting, would be directional and shielded to prevent intrusions into the night sky.

Cultural Resources

Construction workers and supervisors would be informed of the special sensitivity of park values, regulations, and appropriate housekeeping. All contractors would be informed of the penalties for illegally collecting artifacts or intentionally damaging any archeological or historic property by construction crews. Construction workers and supervisors would be advised of the laws and guidelines and special sensitivity to ensure protection of cultural resources.

Should unknown archeological resources be encountered during project implementation, work would be halted in the discovery area, the site secured, and the parks’ archeologist notified. The parks’ archeologist or a qualified representative will examine the area as soon as possible and will follow the requirements of the NHPA, and any other applicable cultural resource laws, as needed. Work could resume only after an appropriate mitigation strategy is developed in consultation with the California SHPO and after archeological clearances are obtained.

The water diversion dams at Silliman and Wolverton creeks, as well as the “Mission 66” water treatment plant at Lodgepole, would be evaluated for their National Register eligibility prior to the start of project activities. The water diversion dams are at least 50 years of age and potentially eligible for listing in the National Register; as per NPS policy, “Mission 66” structures are likewise to be treated as “potentially eligible” pending their formal evaluation.

In compliance with the Native American Graves Protection and Repatriation Act (NAGPRA), the NPS would notify and consult concerned Native American tribal representatives for the proper treatment of human remains, funerary, and sacred objects should these be discovered during the project.

Should construction activities or project work inadvertently harm a cultural resource, work would stop in the area and the Cultural Resource Specialist would be contacted. Consultation with the SHPO, tribes, and/or other interested parties would be conducted, as necessary and appropriate.

Visitor Safety and Experience

Construction activities would be planned to minimize any procedure that might displace normal visitor access or impact their experience.

During project implementation, visitors would be informed of construction activities via press release, visitor center postings, and other educational contacts. Where possible, visitors would be told of alternatives to avoid noise and access intrusions.

One lane of traffic would remain open during the installation of a new waterline within the Generals Highway, in the Giant Forest area. Traffic delays would be a maximum of one hour. When delays are necessary, traffic would be released through the construction zone on the hour. Closures would be limited to weekday closures from 6 a.m. Monday to 12 p.m. Friday with weekend closures limited to short delays to account for the possibility of single lane travel. Some night work may be required, but would be limited to the greatest extent practicable.

The parks would provide information (e.g. brochures, signs, news releases) to inform visitors, concessioners, USFS, and employees of alternative routes and project schedule.

Construction activities occurring near residential or visitor overnight-use areas would be scheduled to occur during the daytime.

Visitors would be notified when road closures or traffic delays would occur and information would be posted in neighboring communities, on the park websites, at visitor centers, and entrance stations.

Park Operations

Delays for emergency response vehicles would be kept to a minimum by having the emergency responders notify the traffic monitors via park radio/frequency immediately when the vehicle is dispatch, thus allowing approximately ten minutes to clear the road before the arrival of the emergency vehicle.

The appropriate volume of water to maintain water supply use by visitors, residents, and employees, would be stored and available during construction activities.

APPENDIX D. BEST MANAGEMENT PRACTICES AND

CONDITIONS FOR PROPOSED ACTIONS WITH THE

POTENTIAL TO HAVE ADVERSE IMPACTS ON WETLANDS

The following serve as Best Management Practices (BMPs) for National Park Service (NPS) actions that may have adverse impacts on wetlands. Additional BMPs may be appropriate depending on local conditions or special circumstances. These also serve as "conditions" that must be met for the actions listed in Section 4.2.1 of these procedures to qualify as "excepted."

1. Effects on hydrology: Action must have only negligible effects on site hydrology, including flow, circulation, velocities, hydroperiods, water level fluctuations, and so on. Care must be taken to avoid any rutting caused by vehicles or equipment.

2. Water quality protection and certification: Action is conducted so as to avoid degrading water quality to the maximum extent practicable. Measures must be employed to prevent or control spills of fuels, lubricants, or other contaminants from entering the waterway or wetland. Action is consistent with state water quality standards and Clean Water Act Section 401 certification requirements (check with appropriate state agency).

3. Erosion and siltation controls: Appropriate erosion and siltation controls must be maintained during construction, and all exposed soil or fill material must be permanently stabilized at the earliest practicable date.

4. Effects on fauna: Action must have only negligible effects on normal movement, migration, reproduction, or health of aquatic or terrestrial fauna, including at low flow conditions.

5. Proper maintenance: Structure or fill must be properly maintained so as to avoid adverse impacts on aquatic environments or public safety.

6. Heavy equipment use: Heavy equipment use in wetlands must be avoided if at all possible. Heavy equipment used in wetlands must be placed on mats, or other measures must be taken to minimize soil and plant root disturbance and to preserve preconstruction elevations.

7. Stockpiling material: Whenever possible, excavated material must be placed on an upland site.

However, when this is not feasible, temporary stockpiling of excavated material in wetlands must be placed on filter cloth, mats, or some other semipermeable surface, or comparable measures must be taken to ensure that underlying wetland habitat is protected. The material must be stabilized with straw bales, filter cloth, or other appropriate means to prevent reentry into the waterway or wetland.

8. Removal of stockpiles and other temporary disturbances during construction:

Temporary stockpiles in wetlands must be removed in their entirety as soon as practicable. Wetland areas temporarily disturbed by stockpiling or other activities during construction must be returned to their pre-existing elevations, and soil, hydrology, and native vegetation communities must be restored as soon as practicable.

9. Topsoil storage and reuse: Revegetation of disturbed soil areas should be facilitated by salvaging and storing existing topsoil and reusing it in restoration efforts in accordance with NPS policies and guidance.

Topsoil storage must be for as short a time as possible to prevent loss of seed and root viability, loss of organic matter, and degradation of the soil microbial community.

10. Native plants: Where plantings or seeding are required, native plant material must be obtained and used in accordance with NPS policies and guidance. Management techniques must be implemented to foster rapid development of target native plant communities and to eliminate invasion by exotic or other undesirable species.

11. Boardwalk elevations: Minimizing shade impacts, to the extent practicable, should be a consideration in designing boardwalks and similar structures. (Placing a boardwalk at an elevation above the vegetation surface at least equal to the width of the boardwalk is one way to minimize shading.)

12. Wild and Scenic Rivers: If the action qualifies as a water resources project pursuant to Section 7(a) of the Wild and Scenic Rivers Act, then appropriate project review and documentation requirements under Section 7(a) are required.

13. Coastal zone management: Action must be consistent, to the maximum extent practicable, with state coastal zone management programs.

14. Endangered species: Action must not jeopardize the continued existence of a threatened or endangered species or a species proposed for such designation, including degradation of critical habitat (see NPS Management Policies 2006 and guidance on threatened and endangered species).

15. Historic properties: Action must not have adverse effects on historic properties listed or eligible for listing in the National Register of Historic Places.

Nationwide Permit 3 - Maintenance Effective Date: March 19, 2017; Expiration Date: March 18, 2022

(NWP Final Notice, 82 FR 1860)

Nationwide Permit 3 - Maintenance. (a) The repair, rehabilitation, or replacement of any previously authorized, currently serviceable structure or fill, or of any currently serviceable structure or fill authorized by 33 CFR 330.3, provided that the structure or fill is not to be put to uses differing from those uses specified or contemplated for it in the original permit or the most recently authorized modification. Minor deviations in the structure's configuration or filled area, including those due to changes in materials, construction techniques, requirements of other regulatory agencies, or current construction codes or safety standards that are necessary to make the repair, rehabilitation, or replacement are authorized. This NWP also authorizes the removal of previously authorized structures or fills.

Any stream channel modification is limited to the minimum necessary for the repair, rehabilitation, or replacement of the structure or fill; such modifications, including the removal of material from the stream channel, must be immediately adjacent to the project. This NWP also authorizes the removal of accumulated sediment and debris within, and in the immediate vicinity of, the structure or fill.