Section_J_-_Att_No__002_Divion_1_Specifications.pdf

DEPARTMENT OF THE INTERIOR

NATIONAL PARK SERVICE

GOLDEN GATE NATIONAL RECREATION AREA

FORT MASON, SAN FRANCISCO, CA 94123

DIVISION I SPECIFICATIONS TO REPLACE SEAWALL GUARDRAIL ON MARINE DRIVE:

REMOVAL OF ANCHOR CHAIN BARRIER AND INSTALLATION OF CABLE AND POLE

SYSTEM

1.0 GENERAL

Project Identification: The project is located on Marine Drive leading to Fort Point within Golden

Gate National Recreation Area, San Francisco, CA. The work of this contract shall consist of the project tasks described below for the referenced project. In this document, the project shall be referred to as “the Project.”

1.1 BACKGROUND

The Fort Point Seawall consists of an original 1500-foot section of granite blocks and began construction in 1869 finishing in 1870. The riprap was later added to protect the wall greatly changing the look of the wall. In 1963 Marine drive underwent major repair involving replacement of several sections of the east portion of the wall along with masonry wall of boulders and cement. This repair work was later recapped with concrete in 1975.

The current barrier is not historically accurate to the period of significance of Fort Point (1861-1945), as no barrier was in place. After this period a multitude of barriers have been erected on the seawall, with the current chain design dating back to its first iteration with repurposed rail as posts in the early 1970s. The earliest design on record used embedded logs.

1.2 SCOPE

Contractor shall furnish all necessary supervision, labor, tools, parts, material, equipment, appurtenances and transportation for the project “replace seawall barrier on marine drive.” The project is located at Fort

Point within Golden Gate National Recreation Area, San Francisco California.

SUMMARY OF ITEMS TO COMPLETE

Removal and Recycling of Existing Barrier:

Includes all work necessary to remove the existing barrier without leaving hazards for the public, such as mounting bolts metal protruding from the ground.

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Fabrication and Installation of New Barrier:

Consists of all fabrication, coating of all metal to standards set, concrete/stone drilling, and installation of barrier components.

Repair Asphalt and Mounting holes:

Consists of the footprint remediation of the previous barrier. Includes the cost of filling and sealing depressions in asphalt surfaces bordering the seawall and patching of holes left in granite and concrete sections of the wall with appropriate filler materials to withstand the harsh marine environment. Finished work will provide a surface free of hazards to cyclists and pedestrians.

1.3 PROJECT DESCRIPTION

The Contractor shall provide all supervision, labor, tools, parts, material, equipment, and transportation to complete the following project work items (the Contractor shall consider the site conditions in project planning and submittal of the proposal and at minimum provide water and electrical power as required for the project - toilet facilities are provided nearby the work site.

This project encompasses the removal of the chain, steel, and cement block barrier currently in place along the 2000ft of seawall along Marine Drive to Fort Point, and its replacement of coated stainless poles and stainless cable. This includes layout and installation of the new barrier system, and remediation of the footprint of the current barrier, repairing the asphalt and concrete surfaces on and bordering the seawall.

Poles shall be spaced at 12’ apart at 42” tall from ground elevation to top and embedded a minimum of

14” into the seawall. Consideration of depth should be taken in the concrete capped sections of wall to prevent breakout of poles, possibly requiring a greater depth. Bored holes shall be within 1/8” of poles to reduce quantity of sealant needed. 167 posts and holes have been calculated as needed for this system, and an extra 23 posts are to be fabricated as spares. Total posts to be fabricated: 190.

Embedded into the seawall are remnants of previous barrier attempts, all using vertically bored holes.

New holes will be spaced away from these to avoid cracking of the granite and to retain a uniform spacing. Bored holes shall be 1/8” larger than the outer diameter of the pole to reduce the amount of sealant required for installation. Holes are to be spaced off seawall 1 foot from outside edge.

Poles are to be installed in a manor to prevent the cable from abrading the poles nor causing premature wear of the cable at the top of the pole. Stainless eyelets shall be used at the end terminations of the system and the significant change in angle in the system. Design calls for a cap on the vertical pole to prevent water ingress, with the cable secured on both sides by Crosby clamps to prevent cable from becoming slack. This design will prevent water intrusion/buildup in the vertical embedded pole. Poles shall be coated to specifications listed under 1.3.2 after the ½” holes has been drilled to allow for cable installation.

Poles are to be installed with a suitable polyurethane sealant applied to the outside of the embedded section. Polyurethane will allow for damaged poles to be removed and replaced while preventing water buildup below grade.

Rope shall be run through pipes in 3 overlapping sections as determined by the 3 abrupt changes in direction in the system. At these points the rope will be terminated at contractor-installed ground eyelets with thimbles.

Tubing shall be as follows: 2”" OD x 0.12" Wall x 1.76" ID Stainless Round Tube 316 Seamless

Bore Holes shall be 1/8th larger than tube diameter.

Polyurethane Sealant shall meet performance requirements of: ASTM C 920, Type S, Grade NS, Class

25, Use T, NT, A, G, and M; TT-S-0230C, Type II, Class A; CSA CAN/CGSB19.13-M87

Cable shall be: 3/8” Type 304 Vinyl Coated Stainless Steel Cable. Stainless rope clips, thimbles, and hardware will be required to affix cable

1.3.1 GENERAL NOTES AND SPECIFICATIONS

The Quality of Workmanship, quality and the type of materials, and the details of the Project shall conform to all applicable portions of the highest standards except where requirements of the drawings and specifications are in excess thereto, in which case the drawings and specifications shall take precedence.

Note that Marine Drive will remain open to visitors at the hours posted and at other hours as may be necessary for the operation of the historic site.

The contractor shall not close or obstruct the roadway unnecessarily, and will not place, nor store, material in the areas around the site without permission and approval from the COR. Dates for initiation of traffic control operations shall also be approved through the COR.

The contractor shall take precautions to protect all park visitors and park staff members from injury and safety hazards, as well as protect all those portions of the site which are not being worked on from any sort of damage. Any damage which does occur will be repaired by the contractor at no cost to the government.

1.3.1.1 REMOVAL, DISPOSAL AND SALVAGE

The contractor shall furnish labor and materials to complete the removal, disposal, and salvage indicated, as specified herein, or both.

Items to be removed – generally, but not restricted to this list:

1. Concrete Bollards and cement debris from drilling

2. Anchor chain, steel bollards, and metal hardware

3. General Construction debris from site operation

If the contractor has any doubts concerning the removal, disposal and salvage, or the extent of the removal, disposal, and salvage, they shall contact the COR for confirmation (or otherwise) of the parts to be removed, disposed, or salvaged.

The contractor shall execute removal, disposal, and salvage work to ensure that adjacent portions of the resource are not damaged from falling debris or other causes.

Care shall be taken to prevent debris from falling over the wall into the ocean, including debris from drilling and patching operations.

Remove as it accumulates, excess debris, except as otherwise specified, resulting from removal, disposal and salvage work. Do not store or permit debris to accumulate on site. If the contractor fails to remove excess debris promptly, the NPS reserves the right to cause same to be removed at the contractor’s expense.

1.3.2 COATING OF EXTERIOR METAL

PART 1 – SCOPE- COATING OF EXTERIOR METAL SURFACES

The Contractor shall properly prepare all steel areas of the Fort Point Railing exterior surfaces including, cables, rods, bolts, nuts, brackets, seams, corners etc. The Contractor shall apply the coating system as indicated herein and, in a manner, prescribed by these specifications and the manufacturers printed application instructions. Full containment is required as per SSPC/Guide 6.

Class 1 containment is required with 100% VOC/HAPS & HEPA particulate containment.

PART 2 - MATERIALS

2.1 The National Park Service provides the following protective coatings manufacturers, as specified herein, as a standard of quality, or approved equal. All finish colors shall be colored at the factory as a dry grind only, no quick colors shall be accepted.

A. Tnemec (or Approved Equal)

PART 3 - REFERENCE STANDARDS

3.1 The Contractor shall comply with the requirements of the Steel Structures Painting Council

Painting Manual, Volume 1 and 2, Good Painting Practices, including the National Association of

Corrosion Engineers, American Society of Testing and Materials, for application and

3.2 Surface preparation, and all applicable OSHA and safety standards.

PART 4 GOVERNING STANDARDS

The following standards (including the most recent update or version) shall govern the work unless specified otherwise in these specifications:

SSPC-Vol.1, Steel Structures Painting Manual, Good Painting Practice.

SSPC-Vol.2, Steel Structures Painting Manual, Systems and Specifications.

SSPC-SP 1 Solvent Cleaning

SSPC-SP 2 Hand Tool Cleaning

SSPC-SP 3 Power Tool Cleaning

SSPC-SP 5 White Metal Blast Cleaning

SSPC-SP Guide 11 Stripe Coating

SSPC-SP 7 Brush-Off Blast Cleaning

SSPC-SP 10 Near White Blast Cleaning

SSPC-SP 11 Power Tool Cleaning to Bare Metal

SSPC-AB 1 Mineral and Slag Abrasives

SSPC-PA 1 Shop, Field and Maintenance Painting

SSPS-PA Guide 3 Guide to Safety in Paint Application

SSPS-PA Guide 12 Lighting

SSPC-Guide to Vis 1-89 Visual Standard for Abrasive Blast Cleaned Steel

SSPC-V15 (3-93) Visual Standard for Power & Hand-Tool Cleaned Steel

OSHA All applicable State and Federal OSHA safety standards.

The Contractor shall consult the COR regarding any situations not covered by the reference standards or this specification; however, it is the Contractor not the COR that is ultimately responsible for proper exterior coating application.

PART 5 - SURFACE PREPARATION

The contractor shall clean all steel surfaces prior to abrasive blasting by pressure washing at 160-

180F, 3,000- 4,000 psi and 3.5 GPM or greater with de-salting detergent using containment to ensure that no solids leave the containment. CSN/salt (chlorides, sulfates & nitrates) testing shall be performed to verify cleanliness before proceeding to blasting. No level of CSN is acceptable.

The Contractor shall prepare all exterior surfaces to be abrasive blasted as per SSPC-SP #

10/NACE No. 2 near white metal blast cleaning with a 2.0 mil minimum to 3.0 mil maximum surface profile.

No sand abrasives will be allowed. Approved abrasive is Garnet or approved equal. No automated recycling grit or shot blast units are permissible.

The Contractor shall schedule cleaning and painting so that detrimental amounts of dust or other contaminants do not fall on wet, or newly painted surfaces. Surfaces not to be painted shall be suitably protected from the effects of cleaning and painting operations. Prior to priming, surfaces shall be cleaned by a combination of blowing with clean dry air with a shut off device, vacuuming, brooming, or as directed by the COR.

PART 6 COATING APPLICATION/ ENVIRONMENTAL CONDITIONS

The Contractor shall not apply coating when any of the following conditions occur: metal temperature is less than five degrees above the dew point.

Surface temperature, wet bulb and dry bulb temperatures shall be monitored at all times with a certifiable device that can calculate dew point and relative humidity.

The contractor shall be responsible to maintain environmental conditions as required by the manufacturer for the coating system being applied and until final cure, by suitable means including dehumidification if necessary.

PART 7 - COATING SYSTEM APPLICATION:

The Contractor shall apply all coatings in accordance with the manufacturer’s latest written recommendations and the best state of the art techniques that will result in a finish that is free of runs, sags, pinholes, dry spray, orange peel, or de-laminations. Contractor must perform discontinuity holiday testing and mark any areas of pinholes or uneven finish surfaces. All welds and edges shall receive a stripe (Brush) coat of epoxy prior to applying the finish coat.

In order to prevent the degradation or contamination of cleaned surfaces, the first coat of paint shall be applied immediately after the surfaces have been cleaned. Succeeding coats shall be applied before contamination of the under surface occurs.

Each coat of paint shall be allowed to either dry or cure for the amount of time recommended by the coating manufacture before successive coats of paint are applied.

All successive coats of paint shall be applied within the re-coat threshold time as recommended by the manufacturer.

PART 8 – EXTERIOR SURFACES COATING SYSTEMS

SOUND COATING: SSPC-SP7/NACE No. 4 Brush-Off Blast Cleaning to create a dense, uniform and angular surface profile of 1.5 mils. Power tools may also be used to mechanically scarify surfaces. All surfaces shall be sound, tightly adhering and shall be uniformly roughened to exhibit an anchor profile.

FOR ALL METAL SURFACES

SSPC-SP1 Solvent Clean just prior to coating application.

Stripe-Coat Procedure to Prevent Edge Rusting: Tnemec Series 132 | ProTuff Mastic (or approved equal); brush-applied to all welds, voids, nuts, bolts and sharp edges referencing SSPC-PA 1, 6.6 Striping

Tie-Coat: Tnemec (or approved equal) Series 132 | ProTuff Mastic; minimum DFT 4.0 mils

Intermediate: (or approved equal) Tnemec Series 1095 | Endura-Shield (or approved equal) 3.0 to 5.0 mils DFT

Finish Coat: Tnemec ((or approved equal) Series 1070V Fluoronar gloss at 2.0 minimum 3.0 maximum mils

Sheen and color will be submitted to the NPS for approved fifteen days prior to Contractor ordering material.

PART 9 EXTERIOR COATING SYSTEM THICKNESS

FILM THICKNESS The Contractor shall inspect film thickness with a non-destructive dry film thickness gauge (e.g., Elcometer 456). The Contractor shall provide to COR upon request U.S.

Department of Commerce, Bureau of Standards calibration plates to verify accuracy.

DISCONTTNUITY HOLIDAY TESTING – Contractor must perform discontinuity holiday testing and repair any areas of pinholes, crazing or uneven finish surfaces.

COATING REPAIRS - 1 If it is necessary to touch-up or re-coat damaged areas after the coatings have cured beyond the maximum recoat time, the Contractor shall prepare surfaces prior to applying touch-up paint. The Contractor shall mask off and spray designated areas only.

PART 12 - COATING 1-YEAR INSPECTION

At the time of Stairway acceptance for service, the COR shall schedule the first Anniversary inspection requirements and failure criteria shall be in accordance with SSPC standards, except as modified herein. The total warranty period shall be two years from the final acceptance date for all workmanship related issues.

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The National Park Service will conduct a first anniversary warranty inspection approximately one year following final acceptance of the work. The COR will establish the date of the inspection and will notify the Contractor at least thirty (30) calendar days in advance of the inspection.

Upon completion of this inspection, the inspecting firm will prepare a report that includes but is not limited to, the methods used in the inspection, the equipment and personnel on hand at the time of the inspection, a summary of findings, photographs of all deficiencies found, and any other information relevant to the condition and maintenance of bridge.

The Contractor shall have a representative on site at the time of inspection.

1.4 WORK SEQUENCE

A. The Work will be conducted in such a manner to provide the least possible interference to occupant access in the area and that causes no damage to historic cultural or natural resources.

1.5 PUBLIC ACCESS AND SAFETY

1.5.1 During the course of this project, the Contractor shall always:

A. Conduct operations to ensure public safety and the least inconvenience to the public.

B. Maintain access for National Park Service administrative and other official business throughout the

Project.

C. During working hours, secure work areas from visitors and staff.

D. Leave work areas in a condition that is safe for visitors and staff on weekends, holidays, and other times when contract work is not in progress.

1.6 CONTRACTOR USE OF PREMISES

A. Emergencies: Emergency telephone numbers must be posted at all phones at the job site:

Fire/Emergency Medical Service/Police – 911 or (415) 561-5656.

B. Site and Features Protection: Fort Point is a National Historic Site. Because of its significance, all parties are to take all measures necessary during the performance of the work to maintain and protect the historic fabric of the site. Contractor supplied padlocks shall be provided at gates to allow access for the duration of the Project. Plan and perform all work with extreme care to ensure that no building or site features are damaged. Note that all features to remain in place, whether historic or non-historic, should be protected during the Project.

C. Occupied Sites & Structures: This surrounding site will be open to visitation throughout the Project.

Contractor must provide temporary enclosures, barricades, signage, etc. as required to protect adjacent occupied spaces and public areas such as building facilities and materials, etc. from dust, noise and debris associated with performing the work.

D. Hours of Work: Regular work hours shall be between 7:00 AM and 5:00 PM, Monday through Friday, excluding Saturdays, Sundays, and Official Government holidays. Contractor work hours should coincide with non-visitor hours to the greatest extent feasible. The Nike Site Hours of Operation are currently

Thursday through Saturday 12:30 p.m. to 3:30 p.m. Requests to work outside designated hours must be given in writing a minimum of two (2) working days prior to scheduling and must be approved in writing by the Contracting Officer.

E. Fire Safety – Work activities are to be conducted in accordance with NFPA 241, “Standard for

Safeguarding Construction, Alternation and Demolition Operations.” Smoking must be prohibited at or in the vicinity of hazardous operations or combustible/flammable materials. Smoking must be permitted only in a designated area. Provide 2A:10B:C fire extinguishers with current State Fire Marshall tags affixed to them in all work/office areas. Combustible materials must not be allowed to accumulate on site.

Store all fuels and flammable liquids in a commercially available flammable storage locker, at least 50 feet from any structure. Have storage lock-up clearly marked "FLAMMABLES" "KEEP FIRE AWAY".

F. Vehicle Refueling: Motorized equipment will be operated so that exhausts do not discharge against combustible materials. Refueling on-site is prohibited.

G. Hot Work Permit: A hot work permit is required for any torch cutting, welding or heat gun work. The permit will be issued by the NPS Fire Inspection office to the Contractor and will be good through completion of work. The Contractor will be responsible for ensuring that all workers and subcontractors follow permit conditions. Contact the GOGA Fire Inspection and Prevention Office (415-289-1813) a minimum of three days prior to the date the hot work permit is needed to avoid delays in work.

H. Worker Camp: Establishment of a camp within the park will not be permitted. The work site will be closed to the public during Project activity. However, maintain access for National Park Service administrative and other official business throughout the Project. Confine storage of materials to the work site. Contractor must always conduct their operations to ensure the least inconvenience to the NPS staff and visiting public.

I. Preservation of Natural Features - Vegetation: Confine all operations to work limits of the project.

Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government. Provide temporary barriers to protect existing trees and plants and root zones. Do not remove, injure, or destroy trees or other plants without prior approval.

Consult with Contracting Officer’s Representative and remove agreed on roots and branches that interfere with the Project. Do not fasten ropes, cables, or guys to existing trees.

J. Preservation of Natural Features - Wildlife: Do not approach, disturb, harass or feed wildlife.

K. Environmental Protection: Properly clean up, mitigate and remedy, if necessary, all spills of petroleum products, hazardous materials, or other chemical or biological products released from the contractor vehicles or stationary sources. Immediately report to the Contracting Officer’s Representative any spill of petroleum products or a hazardous material. Report the spill to the appropriate federal, state and local authorities, if the spill is of a reportable quantity. Separate work area, including material sources, using a dike or other suitable barrier that prevents petroleum products, chemicals or other liquid or solid material from entering the waters of the U.S.

1.7 GOVERNMENT FURNISHED MATERIALS.

A. Not Used.

1.8 CONTRACTOR ACCESS AND USE OF THE SITE

A. Site is a publicly accessible roadway which is also the only access road leading to the Fort. Access to facilities necessary to perform work must be approved by the COR, including traffic control and road closures.

B. Contractor shall provide OSHA and other required postings regarding safety at the site.

C. All Contractor employees and subcontractor employees shall be advised of the rules and regulations of the National Park Service.

1.10 PARKING

A. Parking for Contractor’s vehicles shall be in designated spaces as directed by the COR.

1.11 UTILITIES

A. Potable water is available on site via hydrant locations, access may be requested if needed to complete work. Contractor shall provide water and electrical power as required for the project - restroom facilities are provided nearby the work site, but due to heavy visitor traffic a portable toilet is recommended.

1.12 FIELD VERIFICATION

A. Contractor shall perform field verification of all existing conditions affecting the work associated with this contract before ordering of parts, materials and equipment.

2.0. ENVIRONMENTAL REQUIREMENTS

2.1 The Contractor shall comply with all federal, state, and local environmental laws, and NPS policies and regulations to include but not limited to Resource Conservation, Safe Water Drinking Act (SWDA), the Clean Air Act (CAA), and Federal Facilities Compliance Act (FFCA).

2.2 The use, handling, storage, and disposal of all toxic, hazardous, special or radiological wastes/materials shall be in accordance with all local, State, Federal, and NPS Environmental Regulations and procedures; and coordinated with the NPS Environmental Safety Programs Office and as directed by the COR. Contractor personnel shall be trained by the Contractor on proper procedures to include spill response and clean up.

END OF SECTION