Water_System_SOW2_HOFU_06_15_2016.rtf

NATIONAL PARK SERVICE

Hopewell Furnace National Historical Site 2Mark Bird Lane Elverson, PA 19520

REHABILITATE POTABLE WATER SYSTEM PARK WIDE

27 APR 16

OBJECTIVE AND LOCATION

The contractor will supply all the man power, equipment and materials to rehabilitate and modify the potable water system at Hopewell Furnace in accordance with the plans and specifications included in this solicitation.

Contractor is responsible to field verify all measurements prior to biding and before any construction activities take place.

Due to and endangered species habitat (Bog Turtle) part of this work cannot be performed until after the first of November.

2.0 GENERAL

Contractor shall provide all pipes, valves, valve boxes, fittings, and all other parts as called for in the plans and specifications. Contractor is also responsible for construction surveying, field measurements and verification, excavation, disposal of spoil or import of soil, backfill, compaction, unloading of all materials, implementation of soil erosion and sediment control measures as are out lined in the approved NPDS documents.

Do not fasten ropes, cables, or guys to existing trees. Carefully supervise all operations near trees to prevent damage.

AS-BUILT Drawings Contractor shall provide as-built drawings of completed structure in AutoCAD format and PDF to the COR within 60 days of completion of project. One hard copy of prints and one CD shall be provided.

3.0 STATEMENT OF WORK

Contractor shall provide all pipes, valves, valve boxes, fittings, and all other parts as called for in the plans and specifications. Contractor is also responsible for construction surveying, field measurements and verification, excavation, disposal of spoil or import of soil, backfill, compaction, unloading of all materials, implementation of soil erosion and sediment control measures as are out lined in the approved NPDS documents.

The contractor shall follow the plans and specifications that are attached to this document

4.0 SUBMITTALS

Forward all submittals to Contracting Officer’s Representative at least 14 days prior to start of work. Submittals may be submitted via emails. Submittals that are hard copy submitted, submit two copies of each shop drawing, two copies of manufacturer's catalog sheets (cut sheets), two specimens of each sample, and two copies of all other submittals requested.

Shop Drawings: Provide dated shop drawings including details of fabrication, assembly, and erection, materials used, and all required dimensions. Provide shop drawings from manufacturer and include information necessary for fabrication of all component parts of structure, indicating size and weight of members, type, and location. Also include elevations, fastenings, support and anchors, clearances and required connections to work of other trades. Note: The term "by others" shall not be used. All work to be performed by others shall be identified by Contractor or subcontractor name, discipline, or trade. Shop drawings shall be submitted for:

Manufacturers' Catalog Sheets: Submit only pertinent pages; mark each copy of standard printed data to identify specific products proposed for use.

Manufacturer's Installation/Erection Instructions: Provide complete sets of manufacturer’s printed instructions.

Inspection and Maintenance Procedures: Provide manufacturer’s recommended inspection and maintenance procedures.

After reviewing submittals, the Contracting Officer Representative will return one copy of each submittal marked “APPROVED” or “DISAPPROVED” to the Contractor. The COR will identify the reasons for disapproval of submittals. Approval of submittals does not relieve contractor from compliance with these contract specifications nor with any other applicable regulations or standards.

5.0 QUALITY ASSURANCE

The quality of all work shall be the responsibility of the prime Contractor. Inspect and test all work often enough, including all subcontractors’ work, to ensure that the quality of materials, workmanship, construction, finish, and functional performance is in compliance with applicable specifications and drawings

SAFETY AND ACCIDENT PREVENTION PROGRAM

The Contractor shall be responsible for all employee safety on the work site and shall establish an effective accident prevention program and providing a safe environment for all personnel and visitors. Report any and all accidents or injuries that occur to the COR. Place all require protective barriers and take all necessary measures to assure unauthorized persons do not enter the work site. Assure there are no hazards to park visitors during execution of the work.

ACCIDENT PREVENTION PLAN: Before on-site work begins, submit to the COR for approval, an accident prevention plan, containing as a minimum, the following information:

Name of responsible supervisor to carry out the program.

Safety meetings - As a minimum, conduct weekly 15-minute "toolbox" safety meetings. These meetings shall be conducted by a responsible person and attended by all construction personnel at the worksite. A copy of the Safety meeting will be submitted with the daily construction reports.

First aid procedures - Provide adequate facilities for the number of employees and the type of construction at the site. Provide adequate training to ensure prompt and efficient first aid.

Hazard Assessment - Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to ensure property protection and safety of the public, National Park Service personnel, and Contractor's employees.

Training - Assure all employees have adequate initial and continuing training for the tasks that they perform. Also, train and instruct each employee exposed to hazardous materials (explosive, flammable, poisonous, corrosive, oxidizing, irritating, or otherwise harmful substances that could cause death or injury) in safe and approved methods of handling and storage.

Emergency Planning - Planning for possible emergency situations including floods, fires, cave-ins, wind storms, etc.

Housekeeping - Keep project site in a clean, neat, and safe condition at all times.

Fire Protection - Maintain adequate and proper fire protection equipment on site at all times.

This project is a required safety vest or shirt and hard hat area.

EMERGENCY INSTRUCTIONS: Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

ACCIDENT REPORTING : Notify COR immediately in the event of a reportable accident. A reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, property damage by accident in excess of $100, and fires. Within 7 days of a reportable accident, fill out and forward to the Contracting Officer a DI-134 form, which may be obtained from Contracting Officer. The Contractor shall report all other accidents to the Contracting Officer as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.

HARD HATS AND SAFETY VEST AND PROTECTIVE EQUIPMENT: All construction areas in Hopewell Furnace National Historical Site are deemed Hard Hat and Safety vest areas. The hard hat area shall be posted by the Contractor and it is the Contractor's responsibility to require all those working on or visiting the site to wear hard hats and other necessary protective equipment at all times.

7.0 SPECIAL CONSTRUCTION REQUIREMENTS

It is highly recommended that the Contractor verify all measurements regarding this contract by making a site visit.

A site visit has been scheduled with the designated Contracting Officer's Representative, Ronald Boice on 27 June 2016 at 014:00pm. Please call Mr. Boice for further details and meeting arrangements at 610-783-1024. Any questions that arise during the site visit, prior to proposal submission, shall be made in writing and submitted to the Contracting Office via emai.

8.0 SCHEDULE

Work is to be performed during the hours of 7am and 5pm, Monday through Friday. No work is to be performed on Saturday or Sunday or on federally recognized holidays (unless otherwise authorized by the Contracting Officer 72 Hours ahead of date of work).

Period of Performance Shall be 120 day following issuing of (NTP) Notice To Proceed. Contractor must begin work within 15 days of NTP work period will be from 03 AUG 2016 to 30 NOV 2016.

Appendix A: Map file_0.jpg file_1.wmf

Appendix B: Specifications

TSA FORMULA:

Combine existing aggregates and water in the ratio:

• 1 part AASHTO # 8

• 4 parts unwashed AASHTO # 10 (or B3 sand)

• 1 part minus #200 fines (collector fines)

TSA GRADATION SPECIFICATIONS:

Sieves size TSA % Passing ½” 100% 3/8” 96 – 100% #4 75-90% #8 55-75% #16 35-50% #200 12-20%

•Hardness: The acceptable limit as measured by weight loss is “less than 40% loss”. Los Angeles Abrasion test, AASHTO T-96 [ASTM C 131] shall be used to determine this property. Existing data obtained from tests made for and approved by PENNDOT will be accepted.

•pH: Aggregate must be in the range of pH 6 to pH 12.45 as measured by EPA 9045C.

•Plasticity: Material must not exceed Plasticity Index (PI) rating of 6 by ASTM D4318 Standard.

•Parent Material: TSA can be made from limestone, sandstone, or any other parent material that meets the hardness, pH, gradation, and other requirements as outlined in this document.

• Optimum Moisture: Material is to be delivered and placed at optimum moisture content as determined for that particular source. The optimum percentage moisture is to be identified by the supplier in the bid/purchasing documents. The optimum percentage moisture is to be determined using Proctor Test ASTM D698, procedure C, Standard.

• Transport: Truck tarps must be used to cover 100% of the load’s exposed surface from the time of loading until immediately before dumping, including standing time waiting to dump.

• Placement: TSA should be placed from the furthest point working back towards the source to avoid running equipment on the final trail.

• Paver: A small paver should be used to place TSA. This will reduce aggregate segregation by size that occurs when any aggregate is dumped and spread. It is recommended that the minimum depth of placement should be 4 inches loose, 3 inches compacted.

• “Dump and Spread”: This method should only be used in areas where the dump trucks cannot be utilized do to the possibility of damage to trees. If this method has to be used, the aggregate is not “overworked” which may cause size segregation. TSA must be placed in one layer.

• Compaction: A minimum 3 ton vibratory roller is to be used to compact the final surface. The initial pass of the roller should be in static mode. TSA must be compacted while it is at optimum moisture to achieve maximum density. If TSA sticks to the drum of the roller, stop and wait for the surface to dry further.

• Mixing fines: When mixing aggregates to create TSA, do not to pre-wet any “minus #200” fines before they are added to the mixture. Doing so may cause the fines to clump into balls that can be difficult to break apart by mixing. These “balls” of fines will appear in the final trail, and may cause the rest of the trail to have insufficient fine material.

• Weather: Since TSA is to be placed at optimum moisture, TSA placement is not recommended if the forecasted weather is too cold or wet to allow the material to dry for 1-2 days after placement.

• Trail Closure: Trail use should be prohibited or restricted for TSA placement and the following day.

• Base material: The base material of this trail has been established and will support the TSA placement.

• ADA accessibility: Properly placed and compacted TSA will meet all Americans with Disabilities Act requirements for gravel surface on properly designed trails.