B08_Attach_2_GOGA_Conzelman_Road_Wall_-_Division_2_Through_49_Specifications_-_Final_CD_Submittal.pdf

HALE

PMIS 318735

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE (NPS)

DENVER SERVICE CENTER (DSC)

THIS WORK WAS PREPARED

BY ME OR UNDER MY

SUPERVISION.

Signature

Expiration Date of the License

4/30/202406/30/2028

REPAIR CONZELMAN ROAD

DIVISION 1 SPECIFICATIONS

336173

DIVISION 2 THROUGH 49 SPECIFICATIONS

254040 NPS GOGA Repair Conzelman Road TABLE OF CONTENTS 07-10-2026

TABLE OF CONTENTS

DIVISION 02 - EXISTING CONDITIONS

024100 Demolition

DIVISION 03 - CONCRETE

031000 Concrete Forming and Accessories

032000 Concrete Reinforcing

033000 Cast-in-Place Concrete

DIVISION 31 - EARTHWORK

310519 Geosynthetics for Earthwork

311000 Site Clearing

312200 Grading

312316 Excavation

312323 Fill

312500 Erosion and Sedimentation Controls

DIVISION 32 - EXTERIOR IMPROVEMENTS

321120 Subbase and Aggregate Base Courses

321216 Asphalt Paving

321723 Pavement Markings

329119 Landscape Grading

Division 2 Through 49 Specifications

022600 Abatement of Hazardous Materials

NPS GOGA Repair Conzelman Road

PMIS#336173 ABATEMENT OF HAZARDOUS MATERIALS

022600-1

SECTION 022600

ABATEMENT OF HAZARDOUS MATERIALS

PART 1 - GENERAL

1.01 SUMMARY

A. Section Includes:

1. Abatement of hazardous materials identified in contaminated soil or groundwater. Furnish labor, materials, supplies, and incidentals required, protect Project site personnel and the surrounding public from exposure to potentially hazardous substances, and prevent the spread of potentially contaminated or hazardous substances.

2. The furnishing of labor, supervision, materials, equipment, tools, permits, manifesting, and services required in the characterization, transportation, and disposal of identified or suspected hazardous substances. The suspect substance may be in drums, containers, stockpiled, or may exist as debris piles on the Project site.

B. Related Requirements:

1. Division 01 - General Requirements.

C. Regulatory Requirements shall include, but not be limited to: Comply with laws, ordinances, codes, rules, and regulations of the Federal, State and local authorities having jurisdiction over any of the Work specified herein. Comply with federal EPA and state Department of Transportation regulations for shipping of hazardous substances to offsite disposal facilities. Comply with regulatory requirements imposed by the treatment, storage, and disposal facility. Regulations pertaining to the transport and disposal of hazardous substances/materials include, but are not limited to, the following:

1. Department of Transportation 49 CFR 172 through 179.

2. Department of Transportation 49 CFR 387 (46 FR 30974, 47073).

3. Department of Transportation DOT-E 8876.

4. Environmental Protection Agency 40 CFR 136 (41 FR 52779).

5. Environmental Protection Agency 40 CFR 261, 262 and 761.

6. Resource Conservation and Recovery Act (RCRA).

022600-2

D. Any transporter of hazardous substances shall be licensed in the state in which handling and transportation will take place in accordance with applicable regulations.

E. Comply with OSHA (Occupational Safety and Health Administration) Standards and Regulations contained in Title 29 Code of Federal Regulations, Part 1910.120 "Hazardous Waste Operations and Emergency Response."

F. Where reference is made to one of the above standards, the revision in effect at the time of bid opening shall apply.

1.02 QUALITY ASSURANCE

A. The Work of this Section shall be performed by an entity possessing the following minimum qualifications:

1. Contractors License in the state where the Work is performed, supplemented by a Hazardous Waste specialty license, where applicable (i.e., California).

2. MCS 90 Endorsement on Liability Insurance.

3. Pollution Liability Insurance in the amount of $2,000,000 occurrence.

4. Forty-hour OSHA Training and site-specific health and safety plan for its employees proposed to work at the Project site as defined in 29 CFR 1910.120.

5. A Comprehensive Quality Assurance Plan on file with the Environmental Protection Agency.

6. Project site personnel shall wear personal protective equipment and protective clothing consistent with the levels of protection required for this Work as specified by OSHA (29 CFR Part 1910.120).

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.01 ABATEMENT OF HAZARDOUS MATERIALS

A. Abate hazardous materials including hazardous materials identified in the Phase I Assessment Report.

B. The Work of this section does not include the removal of underground storage tanks, contaminated soil or groundwater, unless specifically authorized in writing by the OAR.

3.02 CONTAINMENT OF RELEASED SUBSTANCES

022600-3

A. If a hazardous material appears to be leaking or otherwise spreading, contain the release of the material. Provide measures to prevent the release of the material to the environment and protect Project site personnel, adjacent properties and occupants, and the general public from potential exposure.

B. During the course of substance containment or evacuation of Project site personnel, protect personnel (onsite workers, non-workers, or the general public) from contact with or exposure to the released substances.

C. The abatement or evaluation of any suspected hazardous material shall only be performed by properly trained and/or certified personnel.

3.03 HEALTH AND SAFETY

A. In an emergency or imminent hazard situation the health and safety of personnel on or near the Project site are the responsibility of the Work of this section. Immediately notify the Owner office of Environmental Health and Safety (OEHS) and the OAR designated representative of the Owner Consultant. Owner representatives will notify Federal, State and Local regulatory authorities, if required.

B. Project site personnel or members of the general public who have been exposed to or have come in contact with any hazardous materials or chemicals shall be immediately transported to the nearest hospital.

3.04 TESTING, TRANSPORT, AND DISPOSAL OF HAZARDOUS SUBSTANCES

A. Collect one composite sample from each media type (solid, liquid, or sludge) of potentially hazardous substance stored in drums, stockpiled, or otherwise identified at the Project site for the purposes of obtaining approvals for proper transport and disposal of the suspect materials. Submit analytical results to a representative of the Owner Consultant, as designated by the OAR.

B. If required, overpack any leaking or deteriorated drums to prevent leaks or spills, and pack small 5-gallon containers into larger new 55-gallon drums. Cover solid waste materials and stockpiled soils with an HDPE liner to prevent storm water runoff from contaminating surrounding areas.

C. Prepare manifests, material profiles, and submit lab analysis for drums/containers and any other documentation required by the receiving facility for signature by a representative of the Owner Consultant and/or Owner, as designated by the OAR.

Copies of waste profiles, manifests, and disposal documentation shall be submitted to the OAR designated representative of the Owner, prior to disposal and/or transporting of hazardous substances.

D. Coordinate waste sampling and analysis requirements with the disposal facility and properly complete profiling and transport documents prior to loading and transport.

022600-4

E. A State registered “Hazardous Waste Hauler” shall transport the waste to a lawfully permitted and Owner approved facility.

F. Prior to transport, a copy of the hazardous waste manifest shall be transmitted by facsimile, through the Project site Owner Consultant, to the Owner Office of Environmental Health and Safety (OEHS) for review and approval. The manifests shall list the generator’s name and mailing address as. The OAR designated representative of the Owner Consultant shall provide the Project site specific generator’s EPA ID # which shall be included on the manifest. Attach the land disposal restriction (LDR) form to the manifest prior to submission to the Owner office of OEHS. The blue and yellow manifest copies and a copy of the LDR form shall be mailed to the Owner office of OEHS. Other copies of the manifest and LDR shall be submitted to the waste transporter.

G. Load, handle, and transport 55-gallon drums and other waste containers to the appropriate disposal facility in accordance with Federal and State regulations.

H. Transport documentation from the receiving facility verifying acceptance and receipt of drums/containers at the facility and sampling and associated test results shall be submitted to the representative of the Owner Consultant, as designated by the OAR, within fifteen days following receipt of hazardous substances to the disposal facility.

I. Materials identified as hazardous wastes under RCRA are not permitted to remain at the Project site more than 30 days after being deemed to be a hazardous waste.

During this period of Project site storage, provide precautions to contain and prevent the release of hazardous or potentially hazardous materials to the environment.

END OF SECTION

NPS GOGA Repair Conzelman Road PMIS#336173 024100 - 1 Demolition

SECTION 024100 - DEMOLITION

PART 1 GENERAL

1.01 SUBMITTALS

A. Site Plan: Indicate:

B. Demolition Plan: Submit demolition plan as required by OSHA and local AHJs.

C. Project Record Documents: Accurately record actual locations of capped and active utilities and subsurface construction.

1.02 QUALITY ASSURANCE

A. Demolition Firm Qualifications: Company specializing in the type of work required.

PART 2 PRODUCTS

2.01 MATERIALS

A. Fill Material: See Section 312323.

PART 3 EXECUTION

3.01 GENERAL PROCEDURES AND PROJECT CONDITIONS

A. Comply with applicable codes and regulations for demolition operations and safety of adjacent structures and the public.

1. Obtain required permits.

2. Use of explosives is not permitted.

3. Take precautions to prevent catastrophic or uncontrolled collapse of structures to be removed; do not allow worker or public access within range of potential collapse of unstable structures.

4. Provide, erect, and maintain temporary barriers and security devices.

B. Minimize production of dust due to demolition operations. Do not use water if that will result in ice, flooding, sedimentation of public waterways or storm sewers, or other pollution.

C. Hazardous Materials:

1. If hazardous materials are discovered during removal operations, stop work and notify

Architect and Owner; hazardous materials include regulated asbestos containing materials, lead, PCBs, and mercury.

2. Hazardous Materials: Comply with 29 CFR 1926 and state and local regulations.

D. Perform demolition in a manner that maximizes salvage and recycling of materials.

NPS GOGA Repair Conzelman Road PMIS#336173 024100 - 2 Demolition

3.02 EXISTING UTILITIES

A. Coordinate work with utility companies. Notify utilities before starting work, comply with their requirements, and obtain required permits.

B. Protect existing utilities to remain from damage.

3.03 SELECTIVE DEMOLITION FOR ALTERATIONS

A. Existing construction and utilities indicated on drawings are based on casual field observation and existing record documents only.

B. Remove existing work as indicated and required to accomplish new work.

C. Protect existing work to remain.

3.04 DEBRIS AND WASTE REMOVAL

A. Remove debris, junk, and trash from site.

NPS GOGA Repair Conzelman Road PMIS#336173 031000 - 1 Concrete Forming And Accessories

SECTION 031000 - CONCRETE FORMING AND ACCESSORIES

PART 1 GENERAL

1.01 Submittals

A. Product Data: Provide data on void form materials and installation requirements.

B. Shop Drawings: Indicate pertinent dimensions, materials, bracing, and arrangement of joints and ties.

C. Designer's Qualification Statement.

D. Design Data: As required by authorities having jurisdiction.

PART 2 PRODUCTS

2.01 Formwork - General

A. Provide concrete forms, accessories, shoring, and bracing as required to accomplish cast-in-place concrete work.

B. Design and construct concrete that complies with design with respect to shape, lines, and dimensions.

C. Comply with applicable state and local codes with respect to design, fabrication, erection, and removal of formwork.

D. Use the following form types:

1. Basement Walls Exposed To View: Site fabricated rough sawn lumber.

2.02 Wood Form Materials

A. Form Materials: At the discretion of the Contractor.

PART 3 EXECUTION

3.01 Earth Forms

A. Hand trim sides and bottom of earth forms. Remove loose soil prior to placing concrete.

3.02 Erection - Formwork

A. Erect formwork, shoring and bracing to achieve design requirements, in accordance with requirements of ACI SPEC-301.

NPS GOGA Repair Conzelman Road PMIS#336173 031000 - 2 Concrete Forming And Accessories

3.03 Form Cleaning

A. Clean forms as erection proceeds, to remove foreign matter within forms.

B. Clean formed cavities of debris prior to placing concrete.

3.04 Formwork Tolerances

A. Construct formwork to maintain tolerances required by ACI SPEC-117, unless otherwise indicated.

3.05 Form Removal

A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads.

NPS GOGA Repair Conzelman Road PMIS#336173 032000 - 1 Concrete Reinforcing

SECTION 032000 - CONCRETE REINFORCING

PART 1 GENERAL

1.01 Submittals

A. Shop Drawings: Comply with requirements of ACI MNL-66 Include bar schedules, shapes of bent bars, spacing of bars, and location of splices.

B. Manufacturer's Certificate: Certify that reinforcing steel and accessories supplied for this project meet or exceed specified requirements.

1.02 Quality Assurance

A. Perform work of this section in accordance with ACI SPEC-301.

PART 2 PRODUCTS

2.01 Reinforcement

A. Reinforcing Steel: ASTM A615/A615M, Grade 60 (60,000 psi) (420 MPa).

1. Epoxy coated in accordance with ASTM A775/A775M.

2.02 Re-bar Splicing:

A. Coupler Systems: Mechanical devices for splicing reinforcing bars.

1. Comply with ACI CODE-318 steel reinforcing design strength requirements for splices in tension and compression.

B. Dowel Bar Splicer with Dowel-Ins: Mechanical devices for splicing reinforcing bars.

1. Comply with ACI CODE-318 steel reinforcing design strength requirements for splices in tension and compression.

2.03 Fabrication

A. Fabricate concrete reinforcing in accordance with CRSI (DA4) - Manual of Standard Practice.

B. Fabricate and handle epoxy-coated reinforcing in accordance with ASTM D3963/D3963M.

C. Locate reinforcing splices not indicated on drawings at point of minimum stress.

NPS GOGA Repair Conzelman Road PMIS#336173 032000 - 2 Concrete Reinforcing

PART 3 EXECUTION

3.01 Placement

A. Place, support and secure reinforcement against displacement. Do not deviate from required position.

B. Do not displace or damage vapor barrier.

C. Comply with applicable code for concrete cover over reinforcement.

D. Field bending shall not be permitted, except where specifically shown or approved

E. Bending and Forming: Fabricate bars of indicated size and accurately form to shapes and lengths indicated and required. Fabricate by methods not injurious to materials. Fabricate reinforcement in accordance with fabricating tolerances of ACI 117. Do not bend reinforcement cold. Reject bars with kinks or bends not scheduled.

NPS GOGA Repair Conzelman Road PMIS#336173 033000 - 1 Cast-In-Place Concrete

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 GENERAL

1.01 Price and Payment Procedures

A. Cast-in-place concrete work will be paid for by the unit price method.

B. Concrete - Vertical in Forms: Includes formwork as specified in Section 031000, reinforcement as specified in Section 032000, concrete, placement accessories, consolidating, and curing. Measurement by:

1.02 Submittals

A. Product Data: Submit manufacturers' data on manufactured products showing compliance with specified requirements and installation instructions.

B. Test Reports: Submit report for each test or series of tests specified.

C. Concrete submittals shall meet requirements indicated on drawings.

D. Concrete mix designs shall include identification number, proportions, and characteristics.

Indicate concrete type for each mix design being submitted along with the proposed location of use.

1.03 Quality Assurance

A. Perform work of this section in accordance with ACI SPEC-301 and ACI CODE-318.

B. Follow recommendations of ACI PRC-305 when concreting during hot weather.

C. Follow recommendations of ACI PRC-306 when concreting during cold weather.

D. Concrete testing shall meet testing requirements for frequency, number of samples, etc.per ACI CODE-318 Chapter 26.

PART 2 PRODUCTS

2.01 Formwork

A. Comply with requirements of Section 031000.

B. Formwork Design and Construction: Comply with guidelines of ACI PRC-347 to provide formwork that will produce concrete complying with tolerances of ACI SPEC-117.

C. Form Materials: Contractor's choice of standard products with sufficient strength to withstand hydrostatic head without distortion in excess of permitted tolerances.

1. Form Facing for Exposed Finish Concrete: Contractor's choice of materials that will provide smooth, stain-free final appearance.

NPS GOGA Repair Conzelman Road PMIS#336173 033000 - 2

2. Form Facing for Exposed Finish Concrete: Steel.

2.02 Reinforcement Materials

A. Reinforcement Accessories:

1. Tie Wire: Annealed, minimum 16 gauge, 0.0508 inch (1.29 mm).

2. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for adequate support of reinforcement during concrete placement.

3. Provide stainless steel, galvanized, plastic, or plastic coated steel components for placement within 1-1/2 inches (38 mm) of weathering surfaces.

4. Coupler Systems: Mechanical devices for splicing reinforcing bars; capable of developing full steel reinforcing design strength in tension and compression.

2.03 Concrete Materials

A. Fine and Coarse Aggregates: ASTM C33/C33M.

B. Fly Ash: ASTM C618, Class C or F.

C. Water: ASTM C1602/C1602M; clean, potable, and not detrimental to concrete.

2.04 Admixtures

A. Do not use chemicals that will result in soluble chloride ions in excess of 0.1 percent by weight of cement.

B. Air Entrainment Admixture: ASTM C260/C260M.

C. Water Reducing and Accelerating Admixture: ASTM C494/C494M Type E.

D. Water Reducing and Retarding Admixture: ASTM C494/C494M Type D.

2.05 Concrete Mix Design

A. Admixtures: Add acceptable admixtures as recommended in ACI PRC-211.1 and at rates recommended or required by manufacturer.

B. Normal Weight Concrete:

1. Compressive Strength, when tested in accordance with ASTM C39/C39M at 28 days: As indicated on drawings.

2. Fly Ash Content: Maximum 15 percent of cementitious materials by weight.

3. Water-Cement Ratio: Maximum 40 percent by weight.

4. Total Air Content: 6 percent, determined in accordance with ASTM C173/C173M.

5. Maximum Slump: As indicated on drawings.

6. Maximum Aggregate Size: As indicated on drawings.

NPS GOGA Repair Conzelman Road PMIS#336173 033000 - 3

PART 3 EXECUTION

3.01 Preparation

A. Formwork: Comply with requirements of ACI SPEC-301. Design and fabricate forms to support all applied loads until concrete is cured and for easy removal without damage to concrete.

B. Prepare existing concrete surfaces to be repaired according to ICRI 310.2R, ______.

3.02 Installing Reinforcement and Other Embedded Items

A. Comply with requirements of ACI SPEC-301. Clean reinforcement of loose rust and mill scale, and accurately position, support, and secure in place to achieve not less than minimum concrete coverage required for protection.

3.03 Placing Concrete

A. Place concrete in accordance with ACI PRC-304.

3.04 Concrete Finishing

3.05 Curing and Protection

A. Comply with requirements of ACI PRC-308. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.

NPS GOGA Repair Conzelman Road PMIS#336173 310519 - 1 Geosynthetics For Earthwork

SECTION 310519 - GEOSYNTHETICS FOR EARTHWORK

PART 1 GENERAL

1.01 SUBMITTALS

A. Product Data: Manufacturer's data on each product to be used, including physical properties, seaming materials, and installation instructions.

B. Shop Drawings:

1. Indicate overall layout, dimensions, geotextile sheet and seam layout.

2. Indicate anchorage, penetration, and seaming details.

C. Samples: Two sheets, indicating physical properties.

D. Manufacturer's Certification: Indicating the proposed geosynthetic function meets design requirements supported by applicable testing results.

E. Manufacturer's qualification statement.

F. Installer's qualification statement.

1.02 QUALITY ASSURANCE

A. Testing Agency Qualifications: Independent firm specializing in performing testing and inspections of the type specified in this section.

PART 2 PRODUCTS

2.01 GEOSYNTHETIC

A. Provide geosynthetic in largest size sheets as possible to minimize field joining.

B. Ultraviolet Stability: 65 percent, minimum, when tested in accordance with ASTM D4355/D4355M.

C. Abrasion Resistance: 80 percent loss for 250 cycles, when tested in accordance with ASTM D4886.

2.02 Geotextile

A. General:

1. AASHTO M 288.

2. Elongation: 35 percent, minimum, when tested in accordance with ASTM

D4632/D4632M.

B. Geotextile for Protection: Capable of absorbing and dissipating stress.

1. Type: Woven.

2. Seams: Mechanically sewn.

NPS GOGA Repair Conzelman Road PMIS#336173 310519 - 2

a. Limit seams perpendicular to the direction of incline.

3. Grab Strength: 500 lb (2.2 kN), minimum, when tested in accordance with ASTM

D4632/D4632M.

4. Puncture Strength: 650 lb (2.9 kN), minimum, when tested in accordance with ASTM

D6241.

C. Geotextile Accessories:

1. Seaming Thread: High-strength; as recommended by manufacturer; contrasting color.

2. Anchoring Pins: As recommended by manufacturer.

2.03 Geogrid

A. General:

1. Tensile Strength at 2 percent Strain: 400 lb/ft (5.8 kN/m), minimum, when tested in accordance with ASTM D6637/D6637M.

2. Tensile Strength at 5 percent Strain: 800 lb/ft (11.7 kN/m), minimum, when tested in accordance with ASTM D6637/D6637M.

B. Geogrid for Reinforcement: Capable of increasing tensile strength of soils.

1. Seams: Spliced.

2. Ultimate Tensile Strength: 4,000 lb/ft (58.4 kN/m), minimum, when tested in accordance with ASTM D6637/D6637M.

3. Junction Strength: 50 lb (0.22 kN), minimum, when tested in accordance with ASTM

D7737/D7737M.

C. Geogrid Accessories:

1. Seaming Splices: As recommended by manufacturer.

2. Anchoring Staples: Steel; 8-inch (20-cm) length, 1-inch (2.54-cm) width.

3. Anchoring Staples: As recommended by manufacturer.

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify the receiving surface is smooth, without ruts or protrusions, and grades are according to design drawings.

B. Verify the receiving surface is unsaturated and free of ponded water.

C. Verify the geosynthetic is free of defects or flaws that may degrade physical performance.

D. Verify that each geosynthetic member is uniquely marked identifying proper placement.

3.02 INSTALLATION

A. General:

1. Notify Architect a minimum of 24 hours prior to installation.

2. Prevent surface drainage from eroding under geosynthetic. Repair undermined areas prior to backfill.

3. Position geosynthetic smooth and wrinkle free on prepared surface; unroll or unfold carefully, avoiding stretching.

NPS GOGA Repair Conzelman Road PMIS#336173 310519 - 3

4. Secure geosynthetic to prevent movement or damage during installation.

5. Perform seaming in adequate lighting. Seam each geosynthetic member immediately after final placement. Clean sheets of dust, dirt, and other foreign matter prior to seaming.

6. Follow manufacturer's recommended installation procedures.

B. Protection:

1. Install geotextile according to manufacturer's recommendations.

2. Lay sheets in the direction of incline.

3. Place adjacent geotextile and loosely fasten until seamed.

4. Anchor Trench:

5. Place terminal ends within anchor trench and secure with backfill.

6. Repairs: Remove damaged portion of geotextile and seam an additional layer to cover the affected area in all directions.

C. Reinforcement:

1. Install geogrid according to manufacturer's recommendations.

2. Lay sheets in the direction of reinforcement.

3. Allow geogrid to lie in a relaxed state for a minimum of 1/2 hour prior to attachments.

4. Place adjacent geogrid and loosely fasten until seamed.

5. Penetrations:

a. Only cut transverse members for penetration sizes smaller than longitudinal members.

b. Reinforce cut geogrid longitudinal members by splicing to adjacent members.

6. Anchor Trench:

a. Excavate in accordance with Section 312316.13.

7. Place terminal ends within anchor trench and secure with backfill.

8. Repairs: Remove damaged portion of geogrid and seam an additional layer to cover the affected area in all directions.

9. Tensioning:

a. Pull geogrid taut in the direction of reinforcement to remove slack.

b. Ensure positive load transfer of perpendicular seams and re-seam loose connections.

3.03 BACKFILL

A. Obtain approval for geosynthetic sheet installation from Engineer before placing fill.

B. Backfill in a manner to prevent damage to geosynthetic. Repair geosynthetic damaged during backfill operations.

C. Cover geosynthetic in the installed direction in accordance with Section 312323.

3.04 PROTECTION

A. Do not exceed geosynthetic manufacturer's recommended exposure to UV radiation.

B. Prevent surface water runoff from contaminating geosynthetic.

C. Do not use pins or staples where risk of damaging underlying geosynthetic layer is present.

NPS GOGA Repair Conzelman Road PMIS#336173 310519 - 4

D. Erect barricades to prevent traffic over geosynthetic before it is filled.

NPS GOGA Repair Conzelman Road PMIS#336173 311000 - 1 Site Clearing

SECTION 311000 - SITE CLEARING

PART 1 GENERAL

1.01 Submittals

A. Site Plan:

1. Indicate vegetation removal limits.

2. Indicate areas for temporary construction and field offices.

B. Clearing Firm Qualification Statement: Documentation of specialized experience.

C. TCIA Installer Qualification Statement: Documentation of Tree Care Industry Association Accreditation.

D. Photographs: Photographic documentation of existing vegetation.

PART 2 PRODUCTS

2.01 Materials

A. Tree Wound Compound: Application capable of sealing vegetation wounds and grafts.

B. Tree Stump Killer: Application capable of preventing tree regrowth.

PART 3 EXECUTION

3.01 Examination

A. Identify potential runoff areas.

B. Identify potential dust sources.

3.02 Clearing and Grubbing

A. Clearing: Cut trees, stumps, shrubs, downed timber, and other vegetation for removal within identified area as indicated on drawings according to 29 CFR 1910.266. Follow recommendations of ANSI Z133 and best local practices for species involved.

B. Clear site after relocating vegetation in accordance with ANSI A300 Part 6.

C. Do not remove or damage vegetation beyond limits indicated on drawings.

D. In areas where vegetation must be removed but no construction will occur other than pervious paving, remove vegetation with minimum subsoil disturbance.

E. Grubbing: Remove stumps, roots, buried timber, and other vegetation minimum depth 12 inches (30 cm) from ground. Remove rocks minimum depth 6 inches (15 cm) from ground.

NPS GOGA Repair Conzelman Road PMIS#336173 311000 - 2 Site Clearing

F. Perform stripping in accordance with the geotechnical report. Prior to placement of fill, remove all vegetation, topsoil, and root mats in areas to receive fill. Completely strip topsoil within the limits of proposed retaining walls and extend stripping a minmum of 5 feet beyond the limits of improvements.

3.03 Selective Removal and Trimming

A. Selective Removal: Individual tree and shrub identified for removal as indicated on drawings according to 29 CFR 1910.266.

B. Selective Trimming: Individual limbs and branches cut back according to ANSI A300 Part 1 identified for removal as indicated on drawings. Follow recommendations of ANSI Z133 and best local practices for species involved.

3.04 Earth Stripping and Stockpiling

A. Stripping:

1. Remove topsoil within identified area:

B. Stockpiling:

1. Place topsoil in identified areas as indicated on drawings:

3.05 Removed Vegetation Processing

A. Do not burn, bury, landfill, or leave on-site, except as indicated on drawings.

B. Trees: Sell if marketable.

3.06 Repair and Restoration

A. Vegetation: Replace damaged or destroyed vegetation identified to remain as indicated on drawings at no cost to Owner:

3.07 Debris Removal

A. Remove debris, junk, and trash from site.

NPS GOGA Repair Conzelman Road PMIS#336173 312200 - 1 Grading

SECTION 312200 - GRADING

PART 1 GENERAL

1.01 Submittals

A. Project Record Documents: Accurately record actual locations of utilities remaining by horizontal dimensions, elevations or inverts, and slope gradients.

PART 2 PRODUCTS

2.01 Materials

A. Gravel: Excavated on-site.

1. Graded according to ASTM D2487 Group Symbol GW, GP, or SP.

2. Meeting relative California Bearing Ratio values of 30 to 80 percent according to ASTM

D1883.

PART 3 EXECUTION

3.01 Rough Grading

A. Excavate and fill subgrade material to elevations indicated on plans.

B. Remove and replace unsuitable materials as specified fill.

3.02 Fine Grading

A. Scrape and spread subgrade material uniformly smooth and without disruptions as indicated on drawings.

3.03 Tolerances

A. Top Surface: Plus or minus 1/2 inch (13 mm).

NPS GOGA Repair Conzelman Road PMIS#336173 312316 - 1 Excavation

SECTION 312316 - EXCAVATION

PART 1 GENERAL

1.01 Submittals

A. Delegated Design Documents: Support and protection plan drawings and calculations sealed by designer.

B. Test Reports: Indicate results of ground-penetrating radar.

C. Field Quality Control Submittals: Document visual inspection of loadbearing excavated surfaces.

D. Designer's qualification statement.

E. Shoring installer's qualification statement.

F. Testing agency's qualification statement.

1.02 Quality Assurance

A. Designer Qualifications: Perform design under direct supervision of professional engineer experienced in design of this type of work and licensed in the State of California.

B. Testing Agency Qualifications: Independent firm specializing in performing ground-penetrating radar surveys.

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.01 Support and Protection

3.02 Dewatering

A. Prevent surface water and groundwater from entering excavations and surrounding areas.

B. Dispose of water without causing surface erosion, sediment buildup, or endangering public health or property.

3.03 Excavation

A. General Excavation:

1. Excavate to indicated contours, elevations, and grades.

2. Perform excavation using conventional earthmoving equipment. at completion of excavation, through clean and bottoms of excavations of loose or disturbed materials prior to placement of fill or construction.

NPS GOGA Repair Conzelman Road PMIS#336173 312316 - 2 Excavation

3. Excavation may encounter cohesive and silty soils prone to instability. Provide slopoing, shoring, aor other support measures as required to maintain excavation stability and comply with shoa requirements.

4. Where rock or hard materials are encountered, utilized heavy-duty excavation or drilling equipment as required to achieve indicated excavations. Methods may include ripping, sawing, or drilling.

5. Contractor is responsible for designin and maintaining safe temporary excavations in accordance with applicable regulations.

B. Excavation to accommodate foundations, underground tanks, and underground utilities.

1. Excavate to specified elevations.

2. Over-excavate to safely install, adjust, and remove forms, bracing, or supports necessary for installation of work.

3. Hand trim excavations. Remove loose matter.

3.04 Excavation Repairs

A. Correct areas over-excavated with native soil.

3.05 Field Quality Control

NPS GOGA Repair Conzelman Road PMIS#336173 312323 - 1 Fill

SECTION 312323 - FILL

PART 1 GENERAL

1.01 SUBMITTALS

A. Product Data for Manufactured Fill.

B. Shop Drawings for Manufactured Fill.

1. Submit location and type of connectors.

2. Indicate proposed weighting or guying.

C. Soil Samples: 10 pounds (4.5 kg) sample of each type of fill; submit in air-tight containers to testing laboratory.

D. Fill Composition Test Reports: Results of laboratory tests on proposed and actual materials used, including manufactured fill.

E. Compaction Density Test Reports.

F. Lightweight Concrete Test Reports.

G. Designer's Qualification Statement.

H. Manufacturer's Qualification Statement.

I. Lightweight Concrete Fill Installer's Qualification Statement.

J. Testing Agency Qualification Statement.

K. Specimen Warranty.

1.02 QUALITY ASSURANCE

A. Designer Qualifications: Perform design of structural fill under direct supervision of a Professional Engineer experienced in design of this type of work and licensed in the State of California.

B. Testing Agency Qualifications: Independent firm specializing in performing testing and inspections of the type specified in this section.

1.03 WARRANTY

A. See Section 017800 - Closeout Submittals, for additional warranty requirements.

PART 2 PRODUCTS

2.01 FILL MATERIALS

A. General Fill: Complying with State of California Highway Department standard.

NPS GOGA Repair Conzelman Road PMIS#336173 312323 - 2

B. General Fill: Subsoil excavated on-site or Imported borrow.

1. Graded.

2. Free of lumps larger than 3 inches (75 mm), rocks larger than 2 inches (50 mm), and debris.

3. Complying with ASTM D2487 Group Symbol CL GW or SW.

C. General Fill: Provide general fill and structural fill in accordance with the geotechnical report.

D. General Fill: Free of deleterious materials; maximum particle size 6 inches or two-thirds of lift thickness.

E. Structural Fill - Complying with State of California Highway Department standard.

F. Structural Fill: Imported borrow.

1. Graded.

2. Free of lumps larger than 3 inches (75 mm), rocks larger than 2 inches (50 mm), and debris.

3. Complying with ASTM D2487 Group Symbol CL.

G. Structural Fill: Free of deleterious materials; maximum particle size 3 inches; less than 40 percent passing no. 200 sieve; maximum liquid limit 30 and plasticity index 10.

H. Concrete for Fill: Lean concrete.

I. Concrete for Fill: See Section 033000; compressive strength as Indicated on Drawings.

J. Granular Fill: Coarse aggregate, complying with State of California Highway Department standard.

K. Topsoil: See Section 329119.

L. Fill Material:

1. Refer to GGNRA SOP 828 supplemental information for the current list of approved backfill material sources and products.

M. Imported Fill:

1. Free of organic matter of debris.

2. submit laboratory test results verifying compliance.

3. Provide certification that materials delivered match tested samples.

N. Regulatory Requirements:

1. Comply with Golden Gate National Recreation Area (GGNRA) Standard Operating

Procedure (SOP) 828 - managing Earth Materials in the GGNRA for all excavation, handling, trasport, and placement of fill materials.

2. All on site and imported fill materials shall be reviewed and approved by the Engineer prior to placement. Coordinate approval though the National Park Service (NPS) Park Environmental Program.

3. Submit documentation demonstrating compliance with GGNRA SOP 828, including material source, composition, and environmental suitability. Do not place fill material until written approval is recieved

NPS GOGA Repair Conzelman Road PMIS#336173 312323 - 3

2.02 ACCESSORIES

A. Geotextile: Non-biodegradable, woven.

PART 3 EXECUTION

3.01 FILLING

A. Fill to contours and elevations indicated using unfrozen materials.

B. Fill up to finish grade elevations unless otherwise indicated.

C. Employ a placement method that does not disturb or damage other work.

D. Systematically fill to allow maximum time for natural settlement. Do not fill over porous, wet, frozen or spongy subgrade surfaces.

E. Maintain optimum moisture content of fill materials to attain required compaction density.

F. Granular Fill: Place and compact materials in equal continuous layers not exceeding 6 inches (150 mm) compacted depth.

G. Soil Fill: Place and compact material in equal continuous layers not exceeding 8 inches (200

mm) compacted depth.

H. Clean bottoms of excavations of loose or disturbed materials prior to placement of fill.

I. do not place fill on unstable or disturbed subgrade. Notify Engineer if unsuitable conditions are encountered.

J. Where required to achieve specified compaction, moisture-condition fill materials prior to placement.

K. Conform fill placement and compaction to recommendations of the geotechnical report.

L. Slope grade away from building minimum 2 inches in 10 feet (50 mm in 3 m), unless noted otherwise. Make gradual grade changes. Blend slope into level areas.

M. Correct areas that are over-excavated.

N. Compaction Density Unless Otherwise Specified or Indicated:

1. Under paving, slabs-on-grade, and similar construction: 97 percent of maximum dry density.

2. At other locations: 95 percent of maximum dry density.

O. Reshape and re-compact fills subjected to vehicular traffic.

P. Maintain temporary means and methods, as required, to remove all water while fill is being placed as required, or until directed by the Architect. Remove and replace soils deemed unsuitable by classification and which are excessively moist due to lack of dewatering or surface water control.

NPS GOGA Repair Conzelman Road PMIS#336173 312323 - 4

3.02 FIELD QUALITY CONTROL

A. Soil Fill Materials:

1. Perform compaction density testing on compacted fill in accordance with ASTM D1556 and ASTM D6938.

2. Evaluate results in relation to compaction curve determined by testing uncompacted material in accordance with ASTM D698 ("standard Proctor"), ASTM D1557 ("modified Proctor"), or AASHTO T 180.

3. If tests indicate work does not meet specified requirements, remove work, replace and retest.

NPS GOGA Repair Conzelman Road PMIS#336173 312500 - 1 Erosion And Sedimentation Controls

SECTION 312500 - EROSION AND SEDIMENTATION CONTROLS

PART 1 GENERAL

1.01 SUBMITTALS

A. Sustainable Design Documentation: Submit documentation required in this section in accordance with requirements specified in Section 013329.02.

PART 2 PRODUCTS

2.01 MATERIALS

A. High Performance - Flexible Growth Medium (HP-FGM):

B. Bonded Fiber Matrix (BFM):

C. Engineered Fiber Matrix (EFM):

D. Biotic Erosion Control Matrix (BECM):

2.02 ACCESSORY MATERIALS

A. Fill Material: See Section 312323.

B. Fill Material: Soil, concrete, granular fill, sand, crushed stone, or waste materials used to raise an existing grade, acceptable to authorities having jurisdiction, and in compliance with specified performance requirements.

C. Mulching Material: See Section 329219.

D. Mulching Material: Oat or wheat straw, free from weeds, foreign matter detrimental to plant life, and dry. Hay or chopped cornstalks are not acceptable.

PART 3 EXECUTION

3.01 FIELD QUALITY CONTROL

A. Inspect erosion and sediment control measures to verify propoer installation and function.

B. erosion and sediment contrl measures are subject to acceptance by the engineer prior to and during construction.

C. Maintain erosion and sediment control measures in effective operating condition for the duration of construction.

D. Promptly repair or replace ineffective or damaged control measures as directed by the Engineer.

NPS GOGA Repair Conzelman Road PMIS#336173 312500 - 2 Erosion And Sedimentation Controls

E. Comply with applicable stormwater regulations. where required, implement an approved SWPPP or UPPP.

F. Where no SWPPP or UPPP is required, provide erosion and sediment control measures as directed by Engineer.

3.02 MAINTENANCE

A. Provide maintenance of seeded areas for three months from Date of Substantial Completion.

B. Maintain seeded areas immediately after placement until grass is well established and exhibits a vigorous growing condition.

3.03 CLEAN UP

A. Clean out sediment control structures that are to remain as permanent measures.

NPS GOGA Repair Conzelman Road PMIS#336173 321120 - 1 Subbase And Aggregate Base Courses

SECTION 321120 - SUBBASE AND AGGREGATE BASE COURSES

PART 1 GENERAL

1.01 SUBMITTALS

A. Product Data: Geogrid indicating tensile strength.

B. Test Reports:

1. Aggregate Composition: Results of laboratory tests on proposed and actual materials used.

2. Compaction Density: Results of laboratory tests on compacted course.

C. Manufacturer's Instructions: Indicate geosynthetic installation procedure.

D. Source Quality Control Submittals: Submit name of imported materials source.

E. Field Quality Control Submittals: Submit compaction density testing results.

F. Testing agency's qualification statement.

1.02 Quality Assurance

A. Testing Agency Qualifications: Independent firm specializing in performing testing and inspections of type specified in this section.

PART 2 PRODUCTS

2.01 MATERIALS

A. Subbase Course:

1. Comply with State of California Highway Department standard.

2. Graded in accordance with ASTM D2487 Group Symbol SW. Subbase adjacent to retaining walls shall consist of free draining material.

B. Geosynthetic:

1. Geotextile: Nonbiodegradable, woven.

2. Geocell Grid: High density polyethylene, perforated.

C. Aggregate Base Course:

1. Comply with State of California Highway Department standard.

2. Type ____ : AASHTO M 147, Grade ____; passing the No.____ (____ mm) sieve; with a liquid limit of maximum 25 percent and a plasticity index of minimum 5 percent in accordance with ASTM D4318.

3. Type: Type I, in accordance with ASTM D1241.

NPS GOGA Repair Conzelman Road PMIS#336173 321120 - 2 Subbase And Aggregate Base Courses

2.02 SOURCE QUALITY CONTROL

PART 3 EXECUTION

3.01 PLACEMENT

A. Under Bituminous Concrete Paving:

1. Subbase Compacted Thickness: According to design drawings.

2. Install geosynthetic reinforcement on substrate in accordance with manufacturers instructions.

3. Aggregate Base Compacted Thickness: According to design drawings.

B. Place course in maximum 4 inch (100 mm) layers and roller compact to specified density.

C. Level and contour surfaces to elevations and gradients indicated.

D. Use mechanical tamping equipment in areas inaccessible to compaction equipment.

3.02 TOLERANCES

3.03 FIELD QUALITY CONTROL

A. Subbase Compaction Density Testing: In accordance with ASTM D1556/D1556M, ASTM D2167, or ASTM D6938.

B. Aggregate Base Compaction Density Testing: In accordance with ASTM D1556/D1556M, ASTM D2167, or ASTM D6938.

C. Evaluate results in relation to compaction curve determined by testing uncompacted material in accordance with AASHTO T 180, ASTM D698 ("standard Proctor"), or ASTM D1557 ("modified Proctor").

3.04 CLEANING

NPS GOGA Repair Conzelman Road PMIS#336173 321216 - 1 Asphalt Paving

SECTION 321216 - ASPHALT PAVING

PART 1 GENERAL

1.01 PERFORMANCE REQUIREMENTS

A. Design paving and subbase at [______] for movement of trucks up to 30,000 lbs (13 600 kg).

PART 2 PRODUCTS

2.01 MATERIALS

A. Asphalt Cement: ASTM D946.

B. Aggregate for Base Course: In accordance with State of California Highways standards.

C. Aggregate for Base Course- Gravel : AASHTO M 147, Grade ____; passing the No. ____ (____ mm) sieve with a liquid limit of not more than 25; a plasticity index of not more than 5 in accordance with ASTM D4318.

D. Aggregate for Base Course : Angular crushed washed stone; free of shale, clay, friable material and debris.

1. Graded in accordance with ASTM D2487 Group Symbol GW; GP; GM; GC.

2. Graded in accordance with ASTM C136/C136M, within the following limits:

a. 2 inch (50 mm) sieve: 100 percent passing.

b. 1 inch (25 mm) sieve: 95 percent passing.

c. 3/4 inch (19 mm) sieve: 95 to 100 percent passing.

d. 5/8 inch (16 mm) sieve: 75 to 100 percent passing.

e. 3/8 inch (9 mm) sieve: 55 to 85 percent passing.

f. No. 4 (4.75 mm) sieve: 35 to 60 percent passing.

g. No. 16 (1.18 mm) sieve: 15 to 35 percent passing.

h. No. 40 (450 micro m): 10 to 25 percent passing.

i. No. 200 (75 micro m): 5 to 10 percent passing.

E. Aggregate for Binder Course: In accordance with State of California Highways standards.

F. Aggregate for Binder Course- Gravel : AASHTO M 147, Grade ____; passing the No. ____ (____ mm) sieve with a liquid limit of not more than 25; a plasticity index of not more than 5 in accordance with ASTM D4318.

G. Aggregate for Binder Course- Gravel : Angular crushed washed stone; free of shale, clay, friable material and debris.

1. Graded in accordance with ASTM D2487 Group Symbol GW.

2. Graded in accordance with ASTM C136/C136M, within the following limits:

a. 2 inch (50 mm) sieve: 100 percent passing.

b. 1 inch (25 mm) sieve: 95 percent passing.

c. 3/4 inch (19 mm) sieve: 95 to 100 percent passing.

NPS GOGA Repair Conzelman Road PMIS#336173 321216 - 2

d. 5/8 inch (16 mm) sieve: 75 to 100 percent passing.

e. 3/8 inch (9 mm) sieve: 55 to 85 percent passing.

f. No. 4 (4.75 mm) sieve: 35 to 60 percent passing.

g. No. 16 (1.18 mm) sieve: 15 to 35 percent passing.

h. No. 40 (450 micro m): 10 to 25 percent passing.

i. No. 200 (75 micro m): 5 to 10 percent passing.

H. Aggregate for Wearing Course: In accordance with State of California Highways standards.

I. Fine Aggregate: In accordance with State of California Highways standards.

J. Mineral Filler: Finely ground particles of limestone, hydrated lime or other mineral dust, free of foreign matter.

K. Fiber Reinforcement: Synthetic fibers shown to have long-term resistance to deterioration when in contact with alkalis and moisture; 1/2 inch (12 mm) length.

L. Primer: In accordance with State of California Highways standards.

M. Tack Coat: Homogeneous, medium curing, liquid asphalt.

N. Seal Coat: AI MS-19, sand type. Provide ____ manufactured by ____ .Seal Coat: AI MS- 19, sand type. Provide ________ manufactured by ________ .

2.02 ASPHALT PAVING MIXES AND MIX DESIGN

A. Use dry material to avoid foaming. Mix uniformly.

B. Asphalt Base Course: State of California Highways standards.

C. Asphalt Binder Course: State of California Highways standards.

D. Asphalt Wearing Course: State of California Highways standards.

E. Submit proposed mix design of each class of mix for review prior to beginning of work.

PART 3 EXECUTION

3.01 PLACING ASPHALT PAVEMENT - SINGLE COURSE

A. Install Work in accordance with State of California Highways standards.

B. Place asphalt within 24 hours of applying primer or tack coat.

3.02 PLACING ASPHALT PAVEMENT - DOUBLE COURSE

A. Place asphalt binder course within 24 hours of applying primer or tack coat.

B. Place asphalt wearing course within two hours of placing and compacting binder course.

NPS GOGA Repair Conzelman Road PMIS#336173 321216 - 3

3.03 SEAL COAT

A. Apply seal coat to asphalt surface course and asphalt curbs in accordance with AI MS-19.

NPS GOGA Repair Conzelman Road PMIS#336173 321723 - 1 Pavement Markings

SECTION 321723 - PAVEMENT MARKINGS

PART 1 GENERAL

1.01 SUBMITTALS

A. Shop Drawings: Indicate survey control points and pavement markings.

B. Shop Drawings: Indicate traffic management plan with barricades, cones, and temporary markings.

C. Product Data: Manufacturer's data sheets on each product to be used.

D. Manufacturer's Instructions:

1. Preparation instructions and recommendations.

2. Storage and handling requirements and recommendations.

3. Installation methods.

1.02 SEQUENCING

A. Allow new pavement surfaces to cure for a period of not less than 14 days before application of markings.

PART 2 PRODUCTS

2.01 Raised Pavement Markings

A. Surface Reflectors: Bidirectional, visible to approaching traffic; capable of withstanding pavement-rated loading.

1. Housing: Cast iron, white.

2. Lens: Prismatic, polycarbonate, white.

3. Dimensions: 4 inches by 4 inches (102 mm by 102 mm).

4. Mounting Adhesive: Type II, in accordance with AASHTO M 237.

2.02 Plastic Pavement Markings

A. Plastic Pavement Markings: Preformed, uniform, smooth edges.

1. Thermoplastic Markings: Alkyd, in accordance with AASHTO M 249.

a. Color: Yellow.

PART 3 EXECUTION

3.01 INSTALLATION

A. General:

1. Position pavement markings as indicated on drawings.

NPS GOGA Repair Conzelman Road PMIS#336173 321723 - 2 Pavement Markings

B. Raised Pavement Markings:

1. Install in accordance with manufacturer's instructions in manner necessary to maintain manufacturer's warranty.

2. Surface Reflectors:

a. Cut pavement and remove depth equal to height of reflector.

b. Partially fill area with road marker epoxy adhesive.

c. Press reflector into adhesive and apply pressure.

C. Plastic Pavement Markings:

1. Install in accordance with manufacturer's instructions in manner necessary to maintain manufacturer's warranty.

2. Thermoplastic Markings: Preheat pavement surface to 275 degrees F (135 degrees C).

Place markings on pavement smooth and without wrinkles. 1/4 inch (6 mm) maximum gap between adjacent markings. Uniformly heat markings between 400 degrees F (204 degrees C) to 440 degrees F (227 degrees C). Do not overheat, scorch, or disperse embedded glass beads.

3.02 FIELD QUALITY CONTROL

A. Allow the pavement marking to set at least the minimum time recommended by manufacturer.

3.03 CLOSEOUT ACTIVITIES

A. Temporary Markings: Remove without damaging surfaces.

NPS GOGA Repair Conzelman Road PMIS#336173 329119 - 1 Landscape Grading

SECTION 329119 - LANDSCAPE GRADING

PART 1 GENERAL

1.01 Submittals

A. Project Record Documents: Accurately record actual locations of utilities remaining by horizontal dimensions, elevations or inverts, and slope gradients.

B. Field Quality Control Submittals: Topsoil depth measurements.

1.02 Quality Assurance

PART 2 PRODUCTS

2.01 Materials

A. Topsoil: Comply with ASTM D5268.

B. Topsoil: Comply with State of California, Highway Department standards.

C. Topsoil: Topsoil excavated on-site.

1. Free of roots, rocks larger than 1/2 inch (12 mm), subsoil, debris, large weeds and foreign matter.

2. Acidity Range (pH): 5.5 to 7.5.

3. Comply with ASTM D2487 Group Symbol OH.

D. Geocell Grid: High density polyethylene, perforated.

1. Cell Depth: 1 inch (25 mm).

2. Cell Area: 200 sq in (31 sq cm), nominal.

3. Tensile Strength at 2-Percent Strain: 400 lb/ft (5.8 kN/m), minimum, when tested in accordance with ASTM D6637/D6637M.

PART 3 EXECUTION

3.01 Topsoil Placement

A. Uniformly distribute and spread topsoil.

B. Place topsoil in areas where seeding, sodding, and planting as indicated on drawings.

C. Compacted Topsoil Thickness: Place as indicated on drawings.

NPS GOGA Repair Conzelman Road PMIS#336173 329119 - 2 Landscape Grading

3.02 Tolerances

A. Topsoil Thickness: 1/2 inch (13 mm) plus/minus.