B08_SF1442_Attachment_1_Specifications-FINAL.pdf

National Park Service

Convert Community Water Systems from Springs to Wells, Skyland and Big Meadows, Shenandoah National Park

SHEN ‐ 151064

Final Construction Documents Project Specifications

June 14, 2019

Prepared by:

Jacobs Engineering Group Inc.

Herndon, VA

Contract No. P15PC00018

Task Order No. 140P2018F0147

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TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 Summary of Work ..................................................................................................... 1-12 01 26 01 Contract Modification Procedures .............................................................................. 1-6 01 27 00 Definition of Contract Line Items ............................................................................... 1-6 01 31 00 Project Management and Coordination .................................................................... 1-10 01 32 16 Construction Schedule ............................................................................................... 1-10 01 33 23 Submittal Procedures ................................................................................................... 1-9 01 35 13.22 Archeological Protection ............................................................................................. 1-3 01 35 23 Safety Requirements .................................................................................................... 1-3 01 35 91 Historic Preservation Treatment Procedures .............................................................. 1-7 01 40 00 Quality Requirements .................................................................................................. 1-7 01 42 00 Reference Standards .................................................................................................. 1-13 01 43 33 Manufacturer's Field Services ..................................................................................... 1-2 Supplement:

Manufacturer’s Certificate of Proper Installation 01 45 33 Special Inspection, Observation, and Testing ............................................................. 1-5 Supplement:

Fabricator's Certificate of Compliance 01 50 00 Temporary Facilities and Controls .............................................................................. 1-8 01 57 19.11 Indoor Air Quality Management ................................................................................. 1-6 01 57 19.12 Noise and Acoustics Management .............................................................................. 1-3 01 57 23 Temporary Storm Water Pollution Prevention Plan ................................................. 1-10 01 67 00 Product Requirements ................................................................................................. 1-8 Supplement:

Affirmative Procurement Reporting Form 01 73 29 Cutting and Patching ................................................................................................... 1-4 01 73 40 Execution ..................................................................................................................... 1-7 01 74 19 Construction Waste Management and Disposal ......................................................... 1-8 01 74 19A Appendix A, Project Waste Management Plan Worksheet 01 74 19B Appendix B, Standard Solid Waste Conversions 01 77 00 Closeout Procedures .................................................................................................... 1-5 01 78 23 Operation and Maintenance Data ................................................................................ 1-8 Supplements:

Equipment Data Sheet Closeout and Operation & Maintenance Requirements 01 79 00 Demonstration and Training........................................................................................ 1-4 01 81 13 Sustainable Design Requirements for NonLEED Projects ........................................ 1-4 01 91 14 Total Building Commissioning ................................................................................. 1-12

DIVISION 02 – EXISTING CONDITIONS

02 41 00 Demolition ................................................................................................................... 1-8

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DIVISION 03 – CONCRETE

03 01 32 Repair of Vertical and Overhead Concrete Surfaces ................................................ 1-14 03 01 33 Repair of Horizontal Concrete Surfaces ................................................................... 1-13 03 10 00 Concrete Forming and Accessories ............................................................................. 1-4 03 15 00 Concrete Joints and Accessories ................................................................................. 1-4 03 21 00 Steel Reinforcement .................................................................................................... 1-5 03 30 00 Cast-In-Place Concrete .............................................................................................. 1-24 Supplement:

Concrete Mix Design, Class 4000F3S1P2C2 ............................................................. 1-3 03 39 00 Concrete Curing ........................................................................................................... 1-3 03 62 00 Grouting ....................................................................................................................... 1-6 Supplement:

24-hour Evaluation of Nonshrink Grout Test Form and Grout Testing

Procedures ................................................................................................................... 1-3 03 63 00 Concrete Doweling ...................................................................................................... 1-4 03 64 23 Epoxy Resin Injection Grouting................................................................................ 1-10

DIVISION 04 – MASONRY

04 22 00 Concrete Unit Masonry ............................................................................................. 1-13

DIVISION 05—METALS

05 05 19 Post-Installed Anchors ................................................................................................ 1-9 05 05 23 Welding ........................................................................................................................ 1-5 Supplement:

Welding and Nondestructive Testing Table ........................................................... 1-1 05 31 00 Steel Decking ......................................................................................................... 1-7 05 50 00 Metal Fabrications ..................................................................................................... 1-13

DIVISION 06—WOOD, PLASTICS, AND COMPOSITES

06 10 01 Carpentry ..................................................................................................................... 1-5

DIVISION 07—THERMAL AND MOISTURE PROTECTION

07 17 00 Bentonite Waterproofing ............................................................................................. 1-3 07 21 00 Thermal Insulation ....................................................................................................... 1-3 07 26 13 Abovegrade Vapor Retarders ...................................................................................... 1-2 07 26 16 Belowgrade Vapor Retarders ...................................................................................... 1-2 07 41 13 Metal Roof Panels ..................................................................................................... 1-10 07 92 00 Joint Sealants ............................................................................................................... 1-5

DIVISION 08—OPENINGS

08 11 00 Metal Doors and Frames ............................................................................................. 1-5 08 90 00 Louvers ........................................................................................................................ 1-3

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DIVISION 09—FINISHES

09 90 00 Painting and Coating ................................................................................................. 1-19 Supplements:

Paint System Data Sheet.............................................................................................. 1-1 Product Data Sheet (PDS) ...................................................................................... 1-1

DIVISION 10—SPECIALTIES

10 14 00 Signage ......................................................................................................................... 1-5 Supplement:

Sign Schedule ......................................................................................................... 1-1 10 44 00 Fire Protection Specialties and Safety Equipment...................................................... 1-5

DIVISION 11 THROUGH 21—NOT USED

DIVISION 22—PLUMBING

22 07 00 Plumbing Piping Insulation ......................................................................................... 1-5 22 10 01 Plumbing Piping and Accessories ............................................................................... 1-6 22 30 00 Plumbing Equipment ................................................................................................... 1-3 Supplement:

Instantaneous Water Heater ........................................................................................ 1-1 22 40 00 Plumbing Fixtures ....................................................................................................... 1-6

DIVISION 23—HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC)

23 05 93 Testing, Adjusting, and Balancing for HVAC ............................................................ 1-5 23 31 13 Metal Ducts and Accessories .................................................................................... 1-19 23 34 00 HVAC Fans ............................................................................................................... 1-12 23 81 00 Unitary Air-Conditioning Equipment ....................................................................... 1-14 23 82 00 Terminal Heating and Cooling Units .......................................................................... 1-7

DIVISION 24 THROUGH 25—NOT USED

DIVISION 26—ELECTRICAL

26 05 02 Basic Electrical Requirements .................................................................................... 1-5 26 05 04 Basic Electrical Materials and Methods ................................................................... 1-10 26 05 05 Conductors ................................................................................................................... 1-9 26 05 26 Grounding and Bonding for Electrical Systems ......................................................... 1-6 26 05 33 Raceway and Boxes ................................................................................................... 1-18 26 20 00 Low-Voltage AC Induction Motors ............................................................................ 1-9 26 24 16 Panelboards .................................................................................................................. 1-6 26 24 19 Low-Voltage Motor Control ....................................................................................... 1-5 26 27 26 Wiring Devices ............................................................................................................ 1-8 26 32 13.13 Propane Engine Generator Set and Propane Tanks .................................................. 1-16 26 36 23 Automatic Transfer Switches ...................................................................................... 1-7 26 41 00 Facility Lightning Protection ...................................................................................... 1-6 26 43 00 Surge Protective Devices ............................................................................................. 1-4

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DIVISION 27 THROUGH 30—NOT USED

DIVISION 31 – EARTHWORK

31 10 00 Site Clearing ................................................................................................................ 1-6 31 23 16 Excavation ................................................................................................................... 1-4 31 23 19.01 Dewatering ................................................................................................................... 1-3 31 23 23.15 Trench Backfill .......................................................................................................... 1-11 31 41 00 Shoring ......................................................................................................................... 1-3

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 11 23 Aggregate Base Course(s) ........................................................................................... 1-6 32 12 16 Asphalt Paving ............................................................................................................. 1-9 32 91 13 Soil Preparation ........................................................................................................... 1-4 32 92 00 Turf and Grasses .......................................................................................................... 1-7

DIVISION 33 – UTILITIES

33 05 01 Conveyance Piping—General ..................................................................................... 1-8 33 05 01.02 Ductile Iron Pipe and Fittings ..................................................................................... 1-9 33 05 01.10 High-Density Polyethylene (HDPE) Pressure Pipe and Fittings ............................... 1-8 33 05 01.14 Fusible PVC Pressure Pipe and Fittings ..................................................................... 1-6 33 05 23.13 Utility Horizontal Directional Drilling ..................................................................... 1-17 33 05 23.26 Pipe Bursting ............................................................................................................... 1-7 33 12 16 Water Utility Distribution Valves ............................................................................... 1-4 33 12 16.29 Air Release Valve Assemblies .................................................................................... 1-5 33 13 00 Disinfection of Water Utility Distribution Facilities .................................................. 1-6 33 21 13.14 Wellhead and Downhole Improvements ................................................................... 1-9 33 21 13.15 Groundwater Supply Well Rehabilitation ................................................................. 1-11 33 21 13.16 BM-17 and SL-G Aquifer Testing and Water Quality Sampling .............................. 1-5

DIVISION 34 THROUGH 39—NOT USED

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DIVISION 40—PROCESS INTERCONNECTIONS

40 05 15 Piping Support Systems ............................................................................................... 1-5 40 27 00 Process Piping—General ............................................................................................. 1-7 Supplements:

Piping Schedule Legend .............................................................................................. 1-2 Piping Schedule ........................................................................................................... 1-2 40 27 00.09 Stainless Steel Pipe and Fittings—Special Service Data Sheet ................................. 1-3 40 27 00.10 Polyvinyl Chloride (PVC) Pipe and Fittings Data Sheet............................................ 1-2 40 27 00.13 Copper and Copper Alloy Pipe, Tubing, and Fittings ................................................ 1-1 40 27 01 Process Piping Specialties ........................................................................................... 1-4 40 27 02 Process Valves and Operators ..................................................................................... 1-8 40 80 01 Process Piping Leakage Testing .................................................................................. 1-3 40 95 00 Process Control ............................................................................................................ 1-9 Supplements:

Input/Output List ......................................................................................................... 1-6 Instrument List ............................................................................................................. 1-5 Component Specifications ........................................................................................... 1-8 Sequence of Control .................................................................................................. 1-33

DIVISION 41 THROUGH 42—NOT USED

DIVISION 43—PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND

STORAGE EQUIPMENT

43 40 01 Polyethylene Storage Tank .......................................................................................... 1-8

DIVISION 44—POLLUTION AND WASTE CONTROL EQUIPMENT

44 42 56.16 Peristaltic Tube Pump ........................................................................................... 1-6 44 42 56.16-01 Sodium Hypochlorite Feed Pumps 1 and 2 Data Sheet ....................................... 1-2 44 42 56.16-02 Sodium Hydroxide (Caustic) Feed Pumps 1 and 2 Data Sheet .......................... 1-2 44 42 56.16-03 Carus 4200 Feed Pumps 1 and 2 Data Sheet ....................................................... 1-2 44 44 13.01 Chemical Metering Pumps ................................................................................... 1-4 44 44 13.01-01 Sodium Hypochlorite Metering Pumps 1 and 2 Data Sheet ............................ 1-2 44 44 13.01-02 Sodium Hydroxide (Caustic) Metering Pumps 1 and 2 Data Sheet ................ 1-2 44 44 13.01-03 Carus 4200 Metering Pumps 1 and 2 Data Sheet ............................................ 1-2

DIVISIONS 45 THROUGH 49—NOT USED

END OF SECTION

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SEALS PAGE

Monica Maria Quinones Burgos, P.E.

DIVISION 01 – GENERAL REQUIREMENTS

DIVISION 02 – EXISTING CONDITIONS

DIVISION 33 – UTILITIES

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Lin Zhang, P.E.

DIVISION 03 – CONCRETE

DIVISION 04 – MASONRY

DIVISION 05 – METALS

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Richard G. Siebers, R.A.

DIVISION 04 – MASONRY

DIVISION 06 – WOOD, PLASTICS, AND COMPOSITES

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

DIVISION 08 – OPENINGS

DIVISION 09 – FINISHES

DIVISION 10 – SPECIALTIES

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Muhammad Shafiquzzaman, P.E.

DIVISION 22 – PLUMBING

DIVISION 23 – HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC)

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David W. Doar, P.E.

DIVISION 26 – ELECTRICAL

DIVISION 40 – PROCESS INTEGRATION

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Howard Melvin Lusk, P.E.

DIVISION 31 – EARTHWORK

DIVISION 32 – EXTERIOR IMPROVEMENTS

DIVISION 33 – UTILITIES

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Glenn Morris Palen, P.E.

DIVISION 40 – PROCESS INTEGRATION

DIVISION 43 – PROCESS GAS AND LIQUID HANDLING, PURIFICATION,

AND STORAGE EQUIPMENT

DIVISION 44 – POLLUTION CONTROL EQUIPMENT

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091015 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.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: Shenandoah National Park at Skyland along the Skyland Upper Loop in Page County, VA and at Big Meadows along Rapidan Fire Road in Madison County, VA.

B. The Work consists of the following:

1. The Work required in the base scope as described in Section 01 27 00, Definition of Contract Line Items, includes the following upgrades to major system features at each of the Developed Areas, as described herein but not limited to:

a. General Conditions:

1) Include General Requirements, Mobilization/Demobilization, Erosion Control, Maintenance of Traffic, Surface Restoration, as required to complete the Work in the Skyland and Big Meadows Developed Area per Contract Specifications and Drawings.

b. Skyland Developed Area:

1) Skyland Well 1 (existing well in vault, existing equipment, demolish existing building and replace with new building):

a) Dispose of existing equipment that has already been removed from the well including: submersible pump, motor, power supply cable, column pipe, controls and associated electrical equipment, wiring and conduit.

Coordinate with utility company and remove existing service meter and all associated conduits and wiring.

b) Demolish existing building and all associated appurtenances; protect wellhead in place.

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c) Remove and dispose of existing wellhead flange/seal and extend the wellhead from 48 inches below grade to 18 inches above grade/ finished floor.

d) Perform pre-rehabilitation video survey.

e) Install temporary submersible pump/motor equipment and perform pre-rehabilitation specific capacity testing, water quality sampling and analysis.

f) Remove temporary submersible pump/motor equipment and develop the well by mechanical methods including swabbing and airlifting.

g) Develop the well by chemical methods and swabbing and airlifting.

h) Install temporary submersible pump/motor equipment and perform overpumping development.

i) Perform post-rehabilitation specific capacity test and remove temporary equipment.

j) Install new wellhead flange/seal and associated wellhead discharge piping including flow meter and valving.

k) Provide and install all downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

l) Provide and install new instrumentation and control equipment including: new motor starter and control panel associated with the well and treatment system.

m) Provide and install new electrical equipment including: electrical cable and conduit, and tie into the existing electrical.

n) Perform final well disinfection and bacteriological sampling.

o) Perform pump performance test.

2) Skyland Well 2 (existing well, existing equipment, located inside of building):

a) Perform pre-rehabilitation specific capacity testing, water quality sampling and analysis.

b) Remove and dispose of existing equipment including: wellhead flange/seal, submersible pump, motor, power supply cable, column pipe, controls and associated electrical equipment, wiring and conduit.

c) Perform pre-rehabilitation video survey.

d) Develop the well by mechanical methods including swabbing and airlifting.

e) Develop the well by chemical methods and swabbing and airlifting.

f) Install temporary submersible pump/motor equipment and perform overpumping development.

g) Perform post-rehabilitation specific capacity test and remove temporary equipment.

h) Provide and install new downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

i) Provide and install new wellhead flange/seal and all fittings necessary to connect to the existing wellhead discharge piping.

j) Install electric control conductors in existing buried conduit installed between existing Skyland Reservoirs area and Skyland Well 2 building. Same conduit shall be used for control conductors to Skyland Well 6.

k) Provide and install new instrumentation and control equipment including new motor starter.

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l) Provide and install new electrical equipment including: electrical cable and conduit and connect to new motor starter.

m) Perform final well disinfection and bacteriological sampling.

n) Perform pump performance test.

3) Skyland Well 6 (existing well, existing equipment, inside existing building):

a) Perform pre-rehabilitation specific capacity testing, water quality sampling and analysis.

b) Remove existing downhole equipment.

c) Perform pre-rehabilitation video survey.

d) Develop the well by mechanical methods including swabbing and airlifting.

e) Develop the well by chemical methods and swabbing and airlifting.

f) Install temporary submersible pump/motor equipment and perform overpumping development.

g) Perform post-rehabilitation specific capacity test and remove temporary equipment.

h) Re-install existing downhole equipment and replace existing downhole check (foot) valve.

i) Remove and dispose of existing controls and associated electrical equipment, wiring and conduit.

j) Install electric control conductors in existing buried conduit installed between existing Skyland Reservoirs area and Skyland Well 6 building. Same conduit shall be used for control conductors to Skyland Well 2.

k) Provide and install new instrumentation and control equipment including new motor starter.

l) Provide and install new electrical equipment including: electrical cable and conduit and connect to new motor starter.

m) Perform final well disinfection and bacteriological sampling.

n) Perform pump performance test.

4) Skyland Well G (existing well with well casing/cap only, new well pump, no equipment, located outside of building):

a) Provide and install pitless adapter unit on newly drilled well and water tight locking well cap.

b) Provide and install all downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

c) Provide and install new discharge piping including valving and mechanical flow meter inside of a vault adjacent to the wellhead.

d) Provide and install new instrumentation and control equipment including new motor starter to be installed in Centralized Treatment Building.

e) Provide and install new electrical equipment including: electrical cable and conduit. Route electrical in new conduit from the wellhead to Centralized Treatment Building.

f) Provide and install local power disconnect switch adjacent to pump.

g) Perform final well disinfection.

h) Conduct step test and pump performance test.

i) Conduct 24-hour constant rate test and perform water quality sampling and analysis per State requirements including bacteriological sampling.

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5) Skyland Well 1 Treatment Building:

a) Construct new CMU building with steel framed roof trusses, chemical/process room, electrical room, and associated mechanical, instrumentation and electrical systems per applicable building codes.

b) Install new 2-inch PVC water piping, valves, and accessories.

c) Install new chemical metering pumps and tanks for corrosion inhibitor, sodium hypochlorite, and caustic soda chemical systems.

d) Provide roof access hatch for Skyland Well 1 access.

e) Secure utility power meter from utility company and install on side of building. Install new buried empty electrical conduits from utility overhead power lines to utility power meter. Prior to backfill, utility company shall be notified. Utility company shall install and terminate wiring from overhead power lines to utility power meter.

6) Skyland Centralized Treatment Building:

a) Construct new CMU building with steel framed roof trusses, chemical/process room, electrical room, and associated mechanical and electrical systems per applicable building codes.

b) Install new 4-inch PVC water piping, valves, and accessories.

c) Install new chemical metering pumps and tanks for corrosion inhibitor, sodium hypochlorite, and caustic soda chemical systems.

7) Water Transmission Mains:

a) Install new 2-inch HDPE or FPVC from Skyland Well G then tie-in to the existing 4-inch untreated line from Skyland Wells 2 and 6, including isolation valves on each line at intertie location. Install new 4-inch HDPE or FPVC to convey the untreated water to Skyland Centralized Treatment. Install new 4-inch HDPE or FPVC from Skyland Centralized Treatment Building to reservoir inlet 6-inch PVC piping.

b) Provide new 2-inch HDPE or FPVC water line from Skyland Well 1 to existing water distribution main, which requires relocation around the new Skyland Centralized Treatment Building.

c) Installation methods shall be trenchless, except for incidental open cuts, and include adapters, fittings, and required appurtenances for a complete and properly installed system.

8) Electrical:

a) Secure utility power meter from utility company and install on side of

Skyland Centralized Treatment Building. Install three new buried empty electrical conduits from utility overhead power lines to new utility-company-provided pad-mounted power transformer located in vicinity of building. Pad provided in this contract. Install new buried empty electrical conduits from pad-mounted power transformer to utility power meter. Prior to backfill, utility company shall be notified.

Utility company shall install and terminate wiring from overhead power lines to pad-mounted transformer and from pad-mounted transformer to power meter.

9) Communications:

a) Install new hardwired control system between Skyland Wells 2, 6, and G and Skyland Centralized Treatment Building. Existing conduit from Skyland Wells 2 and 6 to the new waterline tie-in point from Skyland Well G at Skyland Upper Loop to be used.

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b) Install new wireless telemetry communications between Skyland Centralized Treatment Building and Skyland Well 1 Treatment Building.

c) Install new instrumentation and controls systems for monitoring Skyland Reservoirs water level, Skyland well pumps 1, 2, 6, and G, and Skyland Centralized Treatment Building chemical systems.

c. Big Meadows Developed Area:

1) Big Meadows Wells 9 and 14 (existing wells, existing equipment installed, located inside existing buildings):

a) Perform pre-rehabilitation specific capacity testing, water quality sampling and analysis.

b) Remove and dispose of existing equipment including: wellhead flange/seal, submersible pump, motor, power supply cable, column pipe, controls and associated electrical equipment, wiring and conduit.

c) Perform pre-rehabilitation video survey.

d) Develop the well by mechanical methods including swabbing and airlifting.

e) Develop the well by chemical methods and swabbing and airlifting.

f) Install temporary submersible pump/motor equipment and perform overpumping development.

g) Perform post-rehabilitation specific capacity test and remove temporary equipment.

h) Provide and install new downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

i) Provide and install new wellhead flange/seal and all fittings necessary to connect to the existing wellhead discharge piping.

j) Provide and install new instrumentation and control equipment including: new motor starter and control panel.

k) Provide and install new electrical equipment including: electrical cable and conduit and connect to existing electrical.

l) Perform final well disinfection and bacteriological sampling.

m) Perform pump performance test.

2) Big Meadows Well 16 (existing well, existing equipment, located inside existing building):

a) Remove and dispose of existing equipment including: wellhead flange/seal, controls and associated electrical equipment, wiring and conduit.

b) Perform pre-rehabilitation video survey.

c) Patch hole in casing.

d) Install temporary submersible pump/motor equipment and perform pre-rehabilitation specific capacity testing, water quality sampling and analysis.

e) Remove temporary submersible pump/motor equipment and develop the well by mechanical methods including swabbing and airlifting.

f) Develop the well by chemical methods and swabbing and airlifting.

g) Install temporary submersible pump/motor equipment and perform overpumping development.

h) Perform post-rehabilitation specific capacity test and remove temporary equipment.

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i) Provide and install new downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

j) Provide and install new wellhead flange/seal and associated wellhead discharge piping including flow meter and valving.

k) Provide new discharge piping, valves, and flowmeter inside BM-16 well house.

l) Provide and install new instrumentation and control equipment including: new motor starter and control panel.

m) Provide and install new electrical equipment including: electrical cable and conduit and connect to existing electrical.

n) Perform final well disinfection and bacteriological sampling.

o) Perform pump performance test.

3) Big Meadows Well 17 (new well, no equipment, located outside of building):

a) Provide and install pitless unit on newly drilled well with water tight locking well cap.

b) Provide and install all downhole equipment including: new submersible pump, motor, check valve, column pipe, pump power supply cable and carrier pipe for manual water level access.

c) Provide and install new discharge piping. Route to Big Meadows Well 16 building and tie into existing Big Meadows Well 16 wellhead piping.

d) Provide new discharge piping, valves, and flowmeter inside BM-16 well house.

e) Provide and install new instrumentation and control equipment including: new motor starter, inside Well 16 Building.

f) Provide and install new electrical equipment including: electrical cable and conduit. Route electrical in conduit from the wellhead to Big Meadows 16 building and tie into new motor starter to be installed in the building.

g) Perform final well disinfection.

h) Conduct step test and pump performance test.

i) Conduct 24-hour constant rate test and perform water quality sampling and analysis including bacteriological sampling per State requirements.

4) Big Meadows Centralized Treatment Building:

a) Construct new CMU building with steel framed roof trusses, chemical/process room, electrical room, and associated mechanical and electrical systems per applicable building codes.

b) Install new 4-inch PVC water piping, valves, and accessories.

c) Install new chemical metering pumps and tanks for corrosion inhibitor, sodium hypochlorite, and caustic soda chemical systems.

5) Electrical:

a) At Big Meadows Well 14, coordinate with utility company and remove existing service meter and all associated conduits and wiring. Remove existing electrical conduit from Big Meadows Well 14 to REC power pole if feasible or abandon in place.

b) Secure utility power meter from utility company and install on side of building. Install new buried empty electrical conduits from utility overhead power lines to utility power meter. Prior to backfill, utility company shall be notified. Utility company shall install and terminate wiring from overhead power lines to utility power meter.

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6) Communications:

a) Install new hardwired control system (conduits and wiring) between

Big Meadows Wells 9, 14, 16, and 17 and Big Meadows Centralized Treatment Building.

b) Install new wireless telemetry communications between Big Meadows Centralized Treatment Building and Big Meadows Reservoirs.

c) Install new instrumentation and controls systems for monitoring Big Meadows Reservoirs water level, Big Meadows well pumps 9, 14, 16, and 17, and Big Meadows Centralized Treatment Building chemical systems.

7) Other: Perform additional requirements as specified in the Contract Documents to complete the Work.

2. The Optional Work items as described in Section 01 27 00, Contract Line Items includes the following upgrades to major system features at each of the Developed Areas, as described herein but not limited to:

a. Skyland Developed Area:

1) Electrical:

a) Install permanent 100kW emergency power generator, propane storage tank, and automatic transfer switch at the new Skyland Centralized Treatment Building.

2) Skyland Reservoirs:

a) Perform condition assessment on two (2) underground water storage reservoirs and one (1) aboveground steel water storage tank. Perform repairs to reservoirs based on condition assessment that have been approved by Contracting Officer. For unit cost estimate purposes, estimated concrete repair quantities are 200 LF total of concrete cracks requiring epoxy injection, 100 square feet of horizontal concrete floor area to be repaired, 190 square feet of vertical or overhanging concrete area to be repaired, 176 square feet of painted steel surfaces to be repainted; actual quantities may vary based on results of the condition assessment.

b) Remove and replace two (2) steel access ladders with stainless steel, paint all surfaces on two (2) buried underground water storage reservoirs. Replace insect screen on above ground steel water storage tank air vent. Clean and disinfect all three (3) reservoirs after all Work is complete (including Optional work if executed).

3) Other: Perform additional requirements as specified in the Contract Documents to complete the Work.

b. Big Meadows Developed Area:

1) Electrical:

a) Install permanent 100kW emergency power generator, propane storage tank and automatic transfer switch at the new Big Meadows Centralized Treatment Building.

2) Water Transmission Mains:

a) Replace 3-inch ductile iron pipe with 4-inch HDPE or FPVC from Big

Meadows Centralized Treatment Building to existing Big Meadows water distribution system.

b) Replace 3-inch ductile iron pipe with 2-inch HDPE or FPVC, including piping from Big Meadows Well 16 and 17 to Big Meadows Well 9 and piping from Big Meadows Well 9 to new Centralized Treatment Building.

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c) Replace 2-inch galvanized pipe with 2-inch HDPE or FPVC pipe between Big Meadows Well 14 and Centralized Treatment Building.

d) Install spare 2-inch communications conduit between Big Meadows Centralized Treatment Building and Big Meadows Visitor Center area for future hardwire communications line.

e) Installation methods shall be trenchless, except for incidental open cuts, and include adapters, fittings, and required appurtenances for a complete and properly installed system.

f) Include General Requirements, Mobilization/Demobilization, Erosion Control, Maintenance of Traffic, Surface Restoration, as required to Complete the Work in the Big Meadows Developed Area per Contract Specifications and Drawings.

3) Big Meadows Reservoirs:

a) Perform condition assessment on one (1) 200,000-gallon concrete underground water storage reservoir. Perform repairs/repainting to reservoirs based on condition assessment that have been approved by Contracting Officer. For unit cost estimate purposes; estimated concrete repair quantities are 100 LF total of concrete cracks requiring epoxy injection, 81 square feet of horizontal concrete floor area to be repaired, 182 square feet of vertical or overhanging concrete area to be repaired; actual quantities may vary based on results of the condition assessment.

b) Remove and replace three (3) existing access ladders with stainless steel ladders, one each per reservoir. Clean and disinfection each reservoir after Work is complete (including rehabilitation work if executed).

4) Other: Perform additional requirements as specified in the Contract Documents to complete the Work.

3. Project is designed to comply with applicable sustainability requirements, as specified in Section 01 81 13, Sustainable Design Requirements for NonLEED Projects.

4. Sequence of Work/Phasing:

a. The following provides guidance for planning and completing the Work. Contractor is responsible for developing the Work Schedule for review and approval by the Contracting Officer:

1) Work in the Big Meadows and Skyland Developed Areas may occur simultaneously.

2) Work in the Big Meadows Developed Area may be completed without a

Service Interruption, except for the 4-inch watermain tie-in to the Big Meadows distribution system. Work in the proposed area will not directly impact water supply to the Big Meadows distribution system. No raw or treated water shall be delivered into the Big Meadows distribution system until the Work has been completed, tested, and approved by the Contracting Officer.

3) Work in the Skyland Developed Area may be completed without a Service Interruption, except as noted below. Work shall be sequenced so as to minimize water supply service interruptions from the Furnace Springs or Skyland Reservoirs. No raw or treated water shall be delivered into the Skyland distribution system until the Work has been completed, tested, and approved by the Contracting Officer.

a) In order to minimize interruptions to facilities at Skyland, Contractor shall complete work in the following order unless Contracting Officer

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approval is received: re-route water distribution line around Skyland Well 1 to accommodate the new Treatment Building; modify piping from Wells 2 and 6 and install the Skyland Centralized Treatment Building; and install the new pipeline from Skyland Well G to the Skyland Centralized Treatment Building.

b) Tie in to existing 6-inch PVC water main at Skyland Reservoir site, downstream of Skyland Centralized Treatment Building.

c) Tie in to existing water main from Furnace Spring adjacent to Skyland Well 1. This water main from Furnace Spring must remain in service throughout the duration of the project as it serves as the primary water supply to the Skyland distribution system.

d) Commissioning and approval of Skyland Well 1 Treatment Building and Skyland Centralized Wells Treatment Building may be completed separately.

4) Work Schedule Limitations:

a) No service interruptions, either electrical or water, shall be permitted during the month of October.

b) Electrical utility tie-ins shall be coordinated directly with the local electrical utility. If loss of power will occur to any NPS facility, notify the Contracting Officer.

c) Each water service interruption shall not exceed 8 hours.

d) Consecutive water service interruptions shall be separated by

5 working days.

e) Provide Contracting Officer at least 7 days written notice of water service interruptions, such as valving off distribution lines, stopping chemical injection (i.e. hypochlorite) and shutting down distribution system pumps.

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

1.3 CONTRACTOR USE OF SITE

A. General: Contractor shall have limited use of the site for construction operations. Limit use of premises to work in areas indicated. Do not disturb portions of Project site beyond areas in which the Work is indicated. Shenandoah National Park will remain open during the construction project.

Vehicle and pedestrian traffic, including the Appalachian Trail, must be detoured around defined work areas based on proposed Park re-routes. Contractor shall have full use of defined, pre-approved, and fenced-in work areas for construction operations during the construction period. Detours around defined work areas shall be signed.

B. Storage of Materials:

1. Confine storage of materials to the pre-approved storage area depicted on the Drawings and described herein. Consult with Contracting Officer approval of final locations for materials and equipment storage.

2. A 100 feet by 100 feet staging area for materials and equipment will be available in the Big Meadows “boneyard” location as depicted on the Drawings; located approximately 1/4 mile from Well BM-9. Contractor shall consult and seek approval of final location from Contracting Officer.

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3. Two staging areas for material and equipment will be available in the Skyland area. They are on paved surfaces within the developed area and must be maintained within provided space.

a. Five parking spaces in the southeast corner of the registration parking lot.

b. A 10 feet by 40 feet area in the parking lot on the south side of the Franklin hotel unit.

c. Three parking spaces in the Stony Man Parking area, near Skyland Well G.

C. Preservation of Natural Features:

1. The design is based on trenchless construction methods to prevent damage to natural features and to maintain public access. Trenchless methods are required under all existing road crossings and shall be used elsewhere as feasible. Where trenchless construction methods are not feasible, Contractor to submit written justification and alternative plans to CO at project bidding. Open cut methods shall conform with all performance requirements and Erosion & Sediment Control procedures outlined in the Contract Documents.

2. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, in accordance with park requirements, at no additional expense to the Government.

3. Provide temporary barriers to protect existing trees and plants and root zones, as approved by the park biologist.

4. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Contracting Officer and remove agreed-on roots and branches that interfere with construction.

5. Do not fasten ropes, cables, or guys to existing trees.

6. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

7. Vehicles and heavy equipment shall not be operated off of paved or gravel surfaces and within the critical root zone of trees without first applying an 8-inch protective layer of wood chip mulch. This mulch should be removed and hauled away for disposal at the conclusion of the project, as shown on Drawings. This includes trees within the work zone that are to be saved.

8. Equipment used for this project must be free of dirt, seeds and vegetation prior to entering the park, to avoid the establishment of invasive plants. Equipment should be pressure washed or steam cleaned. Any equipment leaving the park must be re-cleaned before re-entry to the park and project site.

D. Driveways and Entrances: Keep driveways, Rapidan Fire Road, trails, and entrances serving premises passable and available to Government, Government's employees, and emergency vehicles at all times.

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.

3. The gravel roads to Skyland Well 1 and Skyland Reservoirs are not intended for use by the public. Excavation, material storage, and parking on these gravel roads is preferred over temporary disturbance and restoration of adjacent vegetated areas. Maintain a passable width for Government and emergency vehicles.

4. Rapidan Fire Road and the “boneyard” access road must remain open to at least one lane of traffic at all times for Government vehicles, school buses, hikers, and bicyclists.

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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.

1.4 PUBLIC USE OF SITE

A. Contractor shall at all times conduct his operations to ensure the least inconvenience to the public.

Road closures will be permitted, when required, upon specific approval of Contracting Officer.

Contractor to submit plans to Contracting Officer to complete work within a specified time frame.

Skyline Drive closure will not be permitted, and the replacement waterline must cross underneath using a trenchless method.

1.5 CONDUCT OF OPERATIONS

A. At all times the Contractor shall conduct his 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 72 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.

1.6 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of 9:00 a.m. to 6:00 p.m., Monday through Friday, at the Skyland Area and between 7:00 a.m. to 6:00 p.m. at the Big Meadows Area, except when otherwise indicated.

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.

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:

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1. Notify Contracting Officer not less than 7 days in advance of proposed utility interruptions.

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

3. Hours for Utility Shutdowns: Utility shutdowns will be scheduled to minimize impact on

Park operations.

4. In general, the park will continue using springs as a water source filling the existing water storage reservoirs until after the groundwater well project is constructed, tested and accepted by NPS and VA DEP.