Attachment 2- DRCG Brevard Sewer_Tech Specs.pdf

TECHNICAL SPECIFICATIONS

FOR

DAVIDSON RIVER CAMPGROUND

SEWER SYSTEM IMPROVEMENTS

PROJECT NO. 24040

JUNE 2024

US FOREST SERVICE

160A ZILCOA ST.

ASHEVILLE, NC 28801

CONTRACTOR:

ADDRESS:

CONTRACTOR'S LICENSE

NUMBER:

SUMMIT ENGINEERING GROUP, INC.

Engineering ▪ Experience ▪ Excellence

9601 Warren H. Abernathy Highway Spartanburg, SC 29301-5226

(864) 949-1111 Fax (864) 949-1110

DIVISION III

TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

US Forest Service Project No. 24040

TABLE OF CONTENTS

US FOREST SERVICE

DAVIDSON RIVER CAMPGROUND SEWER SYSTEM IMPROVEMENTS

Section Description

Division III – Technical Specifications

02060 Demolition 02110 Clearing and Grubbing 02210 Site Grading 02220 Excavating, Backfilling for Structures 02221 Excavating, Backfilling for Utilities 02260 Erosion and Sediment Control 02511 Crushed Stone Paving 02525 Concrete Curb and Gutter, and Sidewalk 02660 Water Distribution System 02722 Gravity Sewers 02723 Pressure Sewers 02751 Plant Piping & Valves 02780 Steel Casing 02930 Grassing 03250 Concrete Specialty Items 03300 Cast-In-Place Concrete 03405 Precast Utility Vaults 03410 Precast Wetwell 03600 Non-Shrink Grout 03800 Leakage Test 05990 Miscellaneous Metals 09811 Epoxy Wetwell Coating 09900 Painting 11313 Submersible Sewage Pumps 14651 Jib Crane 16260 Standby Electric Power System 16400 Electrical

DEMOLITION

02060-1

SECTION 02060

PART 1 - GENERAL

1.1 DESCRIPTION

A. Work included: Demolish and remove from the site those items so indicated on the Drawings, including buildings, building pads, parking and roadway areas, miscellaneous structures, poles, walls, utilities, signs, etc.

B. Related work:

1. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Supplementary Conditions, and Sections in Division 1 of these specifications.

2. Section 02110 - Clearing and Grubbing.

1.2 QUALITY ASSURANCE

A. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

B. Comply with the Standard Building Code with due regard to the protection of the public and the provision of safeguards during the performance of the work.

C. Use equipment adequate in size, capacity, and numbers to accomplish the work in a timely manner.

D. Comply with requirements of governmental agencies having jurisdiction.

E. Contractor is responsible for being aware of and complying with Asbestos NESHAP regulations, as well as other applicable codes, laws, and regulations.

1. The Owner is to be notified immediately upon discovery of asbestos materials.

PART 2 - PRODUCTS

A. No products are required in this Section.

PART 3 - EXECUTION

3.1 SURFACE CONDITIONS

A. Examine the areas and conditions under which work of this Section will be performed.

Correct conditions detrimental to the safe, timely, and proper completion of the Work. Do not proceed until unsatisfactory conditions are corrected.

02060-2

3.2 DEMOLITION

A. General:

1. Prior to start of demolition, carefully study the Drawings and these Specifications.

2. In company with the Owner's representative, visit the site and verify the extent of demolition to be performed under this Contract.

B. Using only the means and equipment approved for this purpose by the governmental agencies having jurisdiction, demolish and completely remove from the job site the existing construction designated to be removed.

1. Shut off, cap, reroute, and otherwise protect existing public utility lines in accordance with the requirements of the public agency or utility having jurisdiction.

2. Remove rocks larger than 6” diameter, roots, wood, and debris.

C. Demolished material shall be considered property of the Contractor and shall be completely removed from the job site.

D. Use means necessary to prevent dust from becoming a nuisance to the public, to neighbors, and to other work being performed on or near the site.

E. Use any means necessary to protect the public safety during the demolition process.

F. Use whatever means necessary to protect the adjacent structures from damage during demolition.

G. Protection of trees: It may become desirable to save certain trees in areas where cut or fill is eighteen inches or less and in parking areas. Consequently, the Contractor shall obtain approval from Engineer prior to removal of significant trees from such areas. The Contractor shall protect existing trees to remain during construction by constructing barricades around such trees as directed.

H. Erosion control: Construct and maintain erosion control as shown on the Drawings and in accordance with the local County's requirements.

3.3 MEASUREMENT AND PAYMENT

A. No separate measurement or direct payment will be made for the work under this Section and all costs for same shall be included in the lump sum price bid for the project.

END OF SECTION

CLEARING AND GRUBBING

02110-1

SECTION 02110

A. Work included: Remove trees, underbrush, undesirable growth, stumps, roots, etc., from the area to the limits shown on the Drawings, as specified herein, and as needed to meet the requirements of the construction shown in the Contract Documents.

1. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Supplementary Conditions, and Sections in Division 1 of these Specifications.

2. Section 02260 - Erosion and Sediment Control.

A. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

B. Use equipment adequate in size, capacity and numbers to accomplish the work in a timely manner.

C. Comply with requirements of governmental agencies having jurisdiction.

No products are required for this work.

3.1 AREA INCLUDED

A. Pump station site and easement area as indicated on the Drawings.

B. There exists landscaped areas near and/or adjacent to the project site. Care should be taken not to damage landscaped areas. Replace any damaged plants or shrubs and otherwise restore the landscaped areas to as good or better condition.

02110-2

3.2 PROCEDURES

A. Clearing and grubbing: Remove all vegetation, trees, brush, stumps, etc., from the area. All debris from this operation shall be removed and disposed of off the Owner's property. Burning is not allowed.

1. The Owner wishes to maintain a vegetative buffer between the site and adjacent properties. Provide minimal clearing for fence along property side lines.

2. For the area between the power line right-of-way and the road, clear only as needed for installation of force mains.

3. For entrance drive, clear only as necessary for entrance drive and drainage swale(s) plus five feet on either side

B. Selective clearing shall be done in areas designated by the Engineer. Selective clearing shall consist of removing vegetation, brush, stumps, etc., from the area.

Selected trees shall be left standing and care shall be taken not to damage trees to be left. All debris from this operation shall be removed and disposed of off the Owner's property. Burning is not allowed. Grubbing will not be required in areas designated for selective clearing.

C. Removal of trees and shrubs: All trees to be removed shall be felled in such a manner as to avoid injury to remaining trees and to other features not proposed for removal. Trees shall be cut up and the trunks, limbs, and other debris shall be removed from the site. Undesirable shrubs and small trees shall be selectively removed as directed.

D. Stumps and roots: All stumps and roots larger than 2" in diameter shall be completely removed by grubbing except in areas of building site, parking areas and drives, they may be cut off not less than 18" below any subgrade. The area of operation then shall be cleared of resulting debris and matted roots, weeds and other extraneous matter and such shall be hauled away from the site. Generally, all material that cannot be compacted to 90% maximum density in lawn areas and 95% of maximum density elsewhere shall be removed.

E. Protection of trees: It may become desirable to save certain trees in areas where cut or fill is eighteen inches or less and in parking areas. Consequently, the Contractor shall obtain approval from Engineer prior to removal of significant trees from such areas. The Contractor shall protect existing trees to remain during construction by constructing barricades around such trees as directed.

F. Erosion control: Construct and maintain erosion control as shown on the Drawings and in accordance with Section 02260: Erosion and Sediment Control, and the local County's requirements.

02110-3

A. No separate measurement or direct payment will be made for the work under this Section and all costs for same shall be included in the price bid for the item to which it pertains.

EXCAVATION, BACKFILLING FOR STRUCTURES

02220-1

SECTION 02220

EXCAVATING, BACKFILLING FOR STRUCTURES

A. Work included: Excavating, backfilling, compacting and grading to build the structures as shown on the Drawings, as specified herein, and as needed to meet the requirements of the construction shown in the Contract Documents.

Division 1 of these Specifications.

C. Classification: All excavation is unclassified and excavation of every description, regardless of material encountered within the excavation limits of the structure, shall be performed to the lines and grades indicated.

D. Definitions:

1. Open areas: Open areas shall be those areas that do not include building sites, paved areas, street right-of-way and parking areas.

2. Maximum density: Maximum weight in pounds per cubic foot of a specific material.

3. Optimum moisture: Percentage of water in a specific material at maximum density.

4. Rock excavation: Excavation of any hard, natural substance which requires the use of explosives and/or special impact tools such as jack hammers, sledges, chisels or similar devices specifically designed for use in cutting or breaking rock, but exclusive of trench excavating machinery. To be considered as rock excavation, the material shall be continuous; individual boulders or rocks in soil will not be considered rock excavation.

5. Muck: Materials unsuitable for foundation because of organic content, saturation to the extent that it is somewhat fluid and must be moved by dragline, dredge, or other special equipment, are designated as muck. No extra payment will be made for muck removal.

6. Unsuitable material: Unsuitable material is defined as earth material unsatisfactory for its intended use and as classified by the soils technicians.

In addition to organic matter, sod, muck, roots, and rubbish, highly plastic clay soils of the CH and MH descriptions, and organic soils of the OL and OH

02220-2 US Forest Service Project No. 24040 descriptions, as defined in the Unified Soil Classification System shall be considered as unsuitable material.

7. Suitable material: Where the term suitable material is used in specification sections pertaining to earthwork, it means earth or materials designated as being suitable for their intended use by soils technicians or the Engineer.

Suitable material shall be designated as meeting the requirements of the Unified Soil Classification System types SW, GW, GC, SC, SM, ML, Cl or as designated in these specifications.

8. Select material: Select material is defined as granular material to be used where indicated on the drawings or where specified herein consisting of soils conforming to the Unified Soil Classification types SW, SM, GW, or GM or as otherwise approved by the Engineer as select fill. Select material shall contain no stones or rubble larger than 1-1/2" in diameter.

9. Crushed stone (gravel): Crushed stone shall be No. 57 aggregate or equal conforming to ASTM C 33.

10. Excavation: Excavation is defined as unclassified excavation of every description regardless of materials encountered.

B. Comply with requirements of governmental agencies having jurisdiction.

C. Testing: A testing laboratory retained by the Owner will make such tests as are deemed advisable.

1. Schedule fill and backfill operations so as to permit a reasonable time for inspection and testing before placing succeeding lifts and keep the laboratory and Engineer informed of progress.

2. Notify the Engineer and allow sufficient time for observation and/or testing of foundation subgrades prior to commencing any work on the exposed excavation.

1.3 JOB CONDITIONS

A. If conditions encountered during construction warrant additional removal of unsuitable material below foundation subgrades, then remove unsuitable material and replace it as specified at no additional expense to the Owner.

02220-3

B. Restoration of disturbed areas:

1. Restore all areas disturbed by, during or as a result of construction activities to their existing or better condition.

a. For existing areas with sod type grasses, replace with new sod.

Existing sod may be reused where properly removed and stored.

2. Do not interpret this as requiring replacement of trees and undergrowth in undeveloped sections of the rights-of-way.

1.4 PRODUCT HANDLING

A. Comply with pertinent provisions of Section 01640.

2.1 SOIL MATERIALS

A. Soil material used as fill, backfill or subgrade for structures shall consist of suitable material.

1. Provide suitable material free from organic matter and deleterious substances, containing no rocks or lumps over 6" in greatest dimension, and with not more than 15% of the rocks or lumps larger than 2-1/2" in their greatest dimension.

2. Do not permit rocks having a dimension greater than 1" in the upper 6" of fill or subgrade.

B. Where select material is indicated on the drawings or specified, use select granular material as defined herein and approved by the Engineer.

C. Where indicated on the drawings or specified, use gravel or crushed stone as defined herein.

D. Where indicated on the drawings, provide a lean concrete "mud slab" beneath foundations.

1. Use 2000 psi concrete and a minimum thickness of 2-1/2".

2. With prior approval of the Engineer, a "mud slab" may be substituted for gravel base material except where the gravel base is required for drainage or for use with pressure relief valves.

02220-4 US Forest Service Project No. 24040

3.1 EXCAVATION

A. Protection of persons and property:

1. Protect structures, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, washout and other hazards created by operations under this Section.

2. Unless shown to be removed, locate and protect active utility lines shown on the drawings or otherwise made known to the Contractor prior to excavating.

If damaged, repair or replace at no additional cost to the Owner.

3. If active utility lines are encountered and are not shown on the drawings or otherwise made known to the Contractor, promptly notify the Engineer and take necessary steps to assure that service is not interrupted.

4. Barricade open holes and depressions occurring as part of this work, and post warning lights on property adjacent to or with public access. Operating warning lights during hours from dusk to dawn each day and as otherwise required.

5. Side slopes: Slope, bench and/or shore sides of excavations and trench walls to maintain stability of the wall or sides. Pile materials obtained from the excavation a minimum of four feet from the edge of the excavation.

6. Shoring and sheeting: Where necessary, shore and sheet excavations with members of sizes and arrangement sufficient to prevent injury to persons, damage to structures or injurious caving or erosion.

a. Furnish, put in place, and maintain such sheeting and bracing as may be required to support the sides of excavations, to prevent any movement which could in any way diminish the width of the excavation below that necessary for proper construction, and to protect adjacent structures from undermining or other damage. Any movement or bulging that may occur shall be corrected immediately by the Contractor. Care shall be taken to prevent voids outside of the sheeting, but if voids are formed, they shall be immediately filled and compacted.

b. Take all precautions to prevent distress of existing structures because of sheeting installation or removal. Where the removal of sheeting may cause damage to existing or newly constructed structures such sheeting shall be left in place at no expense to the Owner.

c. All sheeting and shoring operations and maintenance thereof shall be the responsibility of the Contractor.

B. Excavating: Perform excavating of every type of material encountered to the lines, grades and elevations indicated or as necessary for construction of the structures shown.

02220-5 US Forest Service Project No. 24040

1. Conform to elevations and dimensions shown within a tolerance of 0.10', and extending a sufficient distance from footings and foundations to permit placing and removing concrete formwork, installation of services, other construction required and for construction observation.

2. Where earth will stand, shallow footing excavations may be cut to the exact size of the footing.

3. Separate suitable materials and stockpile for future use.

4. Dispose of unsuitable material and excess suitable material.

C. Foundation subgrades: Excavate foundations and footings to a level bottom in firm, solid, suitable material.

1. Take care not to disturb the bottom of the excavation unless further compaction of the subgrade is required.

2. Notify the Engineer in due time to permit observation of the completed excavation prior to performing work on the foundation subgrade.

3. Should unsuitable or soft material be encountered at subgrade elevation, remove such material and replace with compacted suitable material or crushed stone from firm earth up to the indicated elevation.

a. In wet excavations or where groundwater is normally present, replace unsuitable material with crushed stone or lean concrete.

b. In dry excavations above the normal groundwater level, replace unsuitable material with compacted suitable material.

c. Unsuitable material shall be removed and replaced at no expense to the Owner.

4. Where rock is encountered at foundation level:

a. Use drilling, picking, wedging or similar methods leaving the foundation rock in an entirely solid and unshattered condition.

b. Roughen approximately level surfaces to provide satisfactory bond with concrete.

c. Cut steps or benches in sloped surfaces to provide satisfactory bond.

D. Drainage: Provide drainage and control grading in the vicinity of the work to prevent drainage into the excavation.

E. Rock excavation:

1. Notify the Engineer upon encountering rock or similar material that cannot be removed or excavated by conventional earth moving or ripping equipment.

2. Do not use explosives without written permission from the Engineer.

3. When explosives are permitted, use only experienced powdermen or persons who are licensed or otherwise authorized to use explosives. Store, handle and use explosives in strict accordance with all regulatory bodies and the "Manual of Accident Prevention in Construction" of the Associated General Contractors of America, Inc.

02220-6 US Forest Service Project No. 24040

4. The Contractor shall be solely responsible for any damage resulting from the use of explosives.

5. The Contractor is responsible for securing all permits required in performing this work.

6. Do not use blasting adjacent to existing buildings or structures.

a. Remove rock at such locations using jack hammers and bull points.

F. Unauthorized excavation:

1. Excavation of material to depths below the grades indicated unless so directed by the Engineer will be deemed unauthorized excavation.

2. Backfill and compact unauthorized over excavation at no expense to the

Owner.

a. In wet excavations or excavations below normal groundwater elevations: Use crushed stone or lean concrete as directed by the Engineer.

b. In dry excavations above normal groundwater elevations: Use compacted suitable material.

3.2 DEWATERING

A. Remove all surface and subsurface waters from excavations and maintain the excavation in a dry condition during construction operations.

B. Maintain the water level below the excavation subgrade during excavation and construction.

1. Material disturbed below the foundation subgrade due to improper dewatering shall be removed and replaced with crushed stone or lean concrete at no expense to the Owner.

2. Use sumps, pumps, drains, trenching or well point system as necessary to maintain a dry excavation.

3. Dewatering by trench pumping will not be permitted if migration of fine grained natural material (running sand) from bottom, side walls or bedding material will occur.

C. Dispose of water pumped from excavations in storm drains having capacity, canals, trenches or other approved locations.

1. Contractor is responsible for acquiring all permits required to discharge the water and shall protect waterways from turbidity during the operation.

2. Prevent flooding of streets, roadways, or private property.

3. Provide engines driving dewatering pumps with residential type mufflers.

3.3 BACKFILLING, FILLING AND COMPACTION

02220-7

A. Use suitable material for all filling and backfilling operations.

B. Fill under structures: Deposit suitable material in layers not exceeding 8" in depth and compact each layer using proper equipment.

1. Do not place rock that will not pass through a 6" diameter ring within the top

12" of the surface of the completed fill or rock that will not pass through a 3" diameter ring within the top 6" of the completed fill.

2. Do not place broken concrete, bricks, or asphaltic pavement in fills.

3. Where indicated on the drawings, provide select granular material.

C. Backfill excavations as promptly as progress of the Work permits, but not until completion of the following:

1. Inspection and acceptance of construction below finish grade including, where applicable, damp proofing and waterproofing.

2. Inspecting, testing, approving and recording locations of underground utilities.

3. Removing concrete formwork.

4. Removing shoring and bracing, and backfilling of voids with satisfactory materials.

5. Removing trash and debris.

6. Foundation walls have been in place seven days.

D. Placing and compacting:

1. Place backfill and fill materials in layers not more than 8" in loose depth.

2. Before compacting, moisten or aerate each layer as necessary to provide the optimum moisture content within ±2%.

3. Compact each layer to required percentage of maximum density for area.

4. Do not place backfill or fill material on surfaces that are muddy, frozen, or containing frost or ice.

5. Place backfill and fill materials evenly adjacent to structures, to required elevations.

6. Take care to prevent wedging action of backfill against structures by carrying the material uniformly around the structure to approximately the same elevation in each lift.

7. Do not operate heavy equipment closer to foundation or retaining walls than a distance equal to height of backfill above the footing.

a. Compact remaining area using power driven hand tampers.

8. Where the construction includes basement or other underground walls having structural floors over them, do not backfill such walls until the structural floors are in place and have attained sufficient strength to support the walls.

E. Compaction requirements:

02220-8

1. Compact soils to not less than the following percentages of maximum dry density as determined in accordance with ASTM D698, Method A (Standard Proctor).

2. Existing in place subgrade below structures where subgrade has been disturbed by water, improper dewatering, or construction traffic.

Top 12” of subgrade: 98% Below top 12” of subgrade: 95%

3. Fill beneath structures and beneath an area extending 10 feet beyond the limits of the foundation:

Top 12” of subgrade: 98% Below top 12” of subgrade: 95%

4. Compaction of suitable material used to replace unsuitable material below foundation subgrades:

Top 12” of subgrade: 98% Below top 12” of subgrade: 95%

3.4 FIELD QUALITY CONTROL

A. Secure the Engineer's construction observation and approval of subgrades and fill layers before subsequent construction is permitted thereon.

B. Field density determinations will be made, at no cost to the Owner, to ensure that the specified densities are being obtained. Field density tests will be performed as determined by the Engineer, considering the following:

C. If, the Engineer's opinion based on reports of the testing laboratory, subgrade or fills that have been placed are below specified density, provide additional compacting and testing until specified requirements are met.

1. Additional testing will be provided by the Owner's selected testing laboratory and all costs for the additional testing will be borne by the Contractor.

D. Proofrolling:

1. Upon request by the Engineer, proofroll the subgrade of structure foundations.

a. Make not less than three passes of a 25 to 50 ton rubber tired roller over the full area.

b. Unstable, soft or otherwise unsuitable materials revealed by the proofrolling shall be removed and replaced with satisfactory material and compacted as specified herein.

3.5 MEASUREMENT AND PAYMENT

02220-9 US Forest Service Project No. 24040

A. No separate measurement or direct payment will be made for the work under this section and all costs for same shall be included in the price bid for the item to which

TRENCHING, BACKFILLING FOR UTILITIES

02221-1 US Forest Service Project No. 24040

SECTION 02221

A. Work included: Trench, backfill, and compact as specified herein and as needed for installation of underground utilities associated with the Work.

A. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

B. Use equipment adequate in size, capacity, and numbers to accomplish the work in a timely manner.

1.3 JOB CONDITIONS

A. Existing utilities:

1. There now exists and / or proposed in the construction areas, waterworks, storm drainage, street paving, gas mains and other utilities.

2. Approximate location of certain underground lines and structures are shown on the plans for information only, other underground lines or structures are not shown.

3. Locate these and other possible unknown utility lines using electronic pipe finder, or other approved means.

4. Locate, excavate, and expose all existing underground lines in advance of trenching operations.

5. The Contractor will be held responsible for the workmanlike repair of any damage done to any of these utilities in the execution of his work under this Section.

6. The Contractor shall familiarize himself with the existing conditions and be prepared to adequately care for and safeguard himself and the Owner from damage.

B. Notification of intent to excavate:

1. The North Carolina Underground Utility Safety and Damage Prevention Act requires persons to ascertain the location of underground public utility property prior to excavation or demolition in certain situations. The Act also requires such persons to give timely notice of intent to excavate or demolish prior to commencing such operations.

C. Protecting trees, shrubbery, and lawns:

1. Trees and shrubbery in developed areas and along the trench line shall not be disturbed unless absolutely necessary, and subject to the approval of the Engineer.

02221-2 US Forest Service Project No. 24040

a. Any such trees and shrubbery necessary to be removed shall be heeled in and replanted.

2. Where trenches cross private property through established lawns, sod shall be cut, removed, stacked and maintained in suitable condition until replacement is approved by the Engineer.

a. Topsoil underlying lawn areas shall be removed and kept separate from general excavated materials.

D. Clearing:

1. Perform all clearing necessary for installation of the complete work.

2. Clearing shall consist of removing all trees, stumps, roots, brush and debris in the rights-of-way obtained for the Work.

3. Unless otherwise directed, all timber of merchantable size shall remain the property of the

Owner and shall be trimmed and cut in such lengths as directed and stacked along the edge of the right-of-way.

4. All other material, including trimmings from above, shall be completely disposed of in a satisfactory manner.

E. Removing and resetting fences:

1. Where existing fences must be removed to permit construction of utilities:

a. Remove such fences and, as the Work progresses, reset the fences in their original location and condition.

b. Provide temporary fencing or other safeguards as required to prevent stock and cattle from wandering to other lands

F. Restoration of disturbed areas:

1. Restore all areas disturbed by, during or as a result of construction activities to their existing or better condition.

2. Do not interpret this as requiring replacement of trees and undergrowth in undeveloped sections of the rights-of-way.

G. Minimizing silting and bank erosion during construction:

1. During construction, protective measures shall be taken and maintained to minimize silting and bank erosion of creeks and rivers adjacent to the work being performed during construction.

H. Blasting:

1. Store all explosives in a secure manner, complying with all laws, ordinances, and regulations.

2. Contractor shall be responsible for damage caused by blasting operations.

3. Comply with requirements of Section 02230 of the Contract Specifications.

02221-3 US Forest Service Project No. 24040

2.1 EXCAVATED MATERIALS

A. Perform all excavation of every description and of whatever substances encountered to depths indicated or specified.

B. Pile material suitable for backfilling in an orderly manner at safe distance from banks or trenches to avoid overloading and to prevent slides or cave-ins.

C. Remove and deposit unsuitable or excess materials as directed by the Engineer.

D. All pipe material, soil contaminated with sewerage, etc., excavated from the trench shall be deposited into a mobile containment vehicle and transported off-site. No such material shall be placed on the construction site.

2.2 BACKFILL MATERIALS

A. Where trenching occurs through non-impervious surfaces (provide from materials excavated for installation of utility):

1. Select soil material free from organic matter and deleterious substances, containing no rocks or lumps over 2" in greatest dimension for backfill up to 12" above top of utility being covered.

2. Do not permit rocks larger than 2" in greatest dimension in top 6" of backfill.

B. Where trenching occurs through impervious surfaces (i.e. roads, sidewalks, driveways, etc.):

1. Backfill with #57 Stone.

2.3 OTHER MATERIALS (Supplemental Backfill, Bedding, etc.)

A. Provide other materials, not specifically described but required for a complete and proper installation, as selected by the Contractor subject to the approval of the Engineer.

3.1 PROCEDURES

A. Existing utilities:

1. Unless shown to be removed, protect active utility lines shown on the drawings or otherwise made known to the Contractor prior to trenching. If damaged, repair or replace at no additional cost to the Owner.

2. If active utility lines are encountered and are not shown on the Drawings or otherwise made known to the Contractor, promptly take necessary steps to assure that service is not interrupted.

02221-4 US Forest Service Project No. 24040

3. If service is interrupted as a result of work under this Section, immediately restore service by repairing the damaged utility at no additional cost to the Owner.

4. If existing utilities are found to interfere with the permanent facilities being constructed under this Section, immediately notify the Engineer and secure his instructions.

5. Do not proceed with permanent relocation of utilities until written instructions are received from the Engineer.

B. Locations within streets or highways:

1. Comply with North Carolina Department of Transportation's (NCDOT) "Encroachment Permit" issued for the Work, and the NCDOT Standard Details and Specifications.

2. Take all precautions and comply with all requirements as may be necessary to protect the improvements, including barricades for protection of traffic.

3. Keep minimum of one lane open to traffic at all times where utility crosses street or highway.

C. Protection of persons and property:

1. Barricade open holes and depressions occurring as part of the Work, and post warning lights on property adjacent to or with public access.

2. Operate warning lights during hours from dusk to dawn each day and as otherwise required.

3. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, washout and other hazards created by operations under this Section.

D. Dewatering:

1. Remove all water, including rain water, encountered during trench and sub-structure work to an approved location by pumps, drains, and other approved methods.

2. Keep trenches and site construction area free from water.

E. Use means necessary to prevent dust becoming a nuisance to the public, to neighbors, and to other work being performed on or near the site.

F. Maintain access to adjacent areas at all times.

3.2 TRENCH EXCAVATION (CLASSIFIED)

A. Remove all materials of whatever substance encountered. Additional payment shall be made for rock excavation as contained in the bid or specified herein.

1. Rock excavation is to consist of the removal and disposal of the following materials:

a. Boulders 1/2 cubic yard or more in volume.

b. Solid rock.

c. Materials that cannot be removed without systematic drilling and blasting, such as

02221-5 US Forest Service Project No. 24040 rock material in ledges or aggregate conglomerate deposits that are so firmly cemented as to possess the characteristics of solid rock.

d. Concrete and masonry structures exceeding 1/2 cubic yard in volume except sidewalks and paving.

2. Rock excavation does not include:

a. Boulders, concrete or masonry structures less than 1/2 cubic yard in volume.

b. Hard and compact materials such as cemented gravel and relatively soft or disintegrated rock that can be removed without continuous and systematic drilling and blasting.

c. Material removed by intermittent drilling and blasting performed to increase production.

3. Do not remove material claimed as rock until the Engineer has classified and cross-sectioned same.

Note: For payment purposes of classified excavation, the maximum trench width shall be

3’0”. Classified excavation beyond the maximum trench width will not be paid for.

B. Trenching in existing lawns:

1. Where trenching occurs in existing lawns, remove turf in sections and keep damp. Replace turf upon completion of backfill operations.

C. Open cut:

1. Excavate for utilities by open cut.

2. If conditions at the site prevent such open cut, and if approved by the Engineer, tunneling may be used.

3. Short sections of a trench may be tunneled if, in the opinion of the Engineer, the conductor can be installed safely and backfill can be compacted properly into such tunnel.

4. Remove boulders and other interfering objects, and backfill voids left by such removals, at no additional cost to the Owner.

5. Remove wet or otherwise unstable soil incapable of properly supporting the utility, as determined by the Engineer, to depth required and backfill to proper grade with stone bedding material, at no additional cost to the Owner.

6. Excavating for appurtenances:

a. Excavate for manholes and similar structures to a distance sufficient to leave at least 12" clear between outer surfaces and the embankment or shoring that may be used to hold and protect the banks.

b. Overdepth excavation beyond such appurtenances that has not been directed will be considered unauthorized. Fill with sand, gravel or lean concrete as directed by the Engineer, and at no additional cost to the Owner.

D. Trench to the minimum width necessary for proper installation of the utility, with sides as nearly vertical as possible. Accurately grade the bottom to provide uniform bearing for the utility.

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E. Provide sheeting and shoring necessary for protection of the work and for the safety of personnel.

1. Remove in units when level of backfilling has reached the elevation necessary to protect the utility work and adjacent property.

F. Depressions:

1. Dig bell holes and depressions for joints after the trench has been graded. Provide uniform bearing for the pipe on prepared bottom of the trench.

2. Except where rock is encountered, do not excavate below the depth indicated or specified.

3. Where rock is encountered, excavate rock to a minimum overdepth of 4" below the trench depth indicated or specified and to provide 6" clearance in any horizontal direction from all parts of the utility and appurtenances.

G. Comply with pertinent OSHA regulations in regards to the excavation of utilities.

3.3 BACKFILLING

1. Backfill trenches and excavations immediately after the pipes are laid, unless other protection is directed or indicated. Comply with compaction requirements shown on the Contract Drawings.

2. Select and deposit backfill materials with special reference to the future safety of the pipes.

3. Reopen trenches which have been improperly backfilled, to a depth as required for proper compaction. Refill and compact as specified or otherwise correct to the approval of the Engineer.

4. Surplus material shall be disposed of as directed by the Engineer.

5. Original surface shall be restored to the approval of the Engineer.

B. Lower portion of trench:

1. Deposit approved backfill and bedding material in layers of 6" maximum thickness, and compact with suitable tampers to the density of the adjacent soil until there is a cover of not less than 24" over sewers and 12" over other utility lines.

2. Take special care in backfilling and bedding operations not to damage pipe and pipe coatings.

C. Remainder of trench:

1. Except for special materials for pavements, backfill the remainder of the trench with material free from stones larger than 6" or 1/2 the layered thickness, whichever is smaller, in any dimension.

2. Deposit backfill material in layers not exceeding the thickness specified, and compact each layer to a density equivalent of not less than 95% of an ASTM D698 Proctor Curve.

D. Adjacent to buildings: Mechanically compact backfill in 6" layers within ten (10') feet of buildings.

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E. Under roads, streets, and other paved areas:

1. Mechanically tamp in 8" layers using heavy duty pneumatic tampers or equal.

2. Tamp each layer to a density equivalent of not less than 98% of an ASTM D698 Proctor

Curve.

3. Provide additional compaction by leaving the backfilled trench open to traffic while maintaining the surface with crushed stone.

4. Refill any settlement with crushed stone and continue such maintenance until replacement of pavement is authorized by the Engineer.

F. Undeveloped areas:

1. Backfill in wooded, swampy, or undeveloped areas shall be as specified hereinbefore unless otherwise approved by the Engineer.

EROSION AND SEDIMENT CONTROL

02260-1

SECTION 02260

A. Work included: Provide protection of the environment during the construction of this project to reduce soil erosion and siltation to the lowest reasonably achievable level.

1.2 GENERAL

A. Exercise every reasonable precaution, throughout the life of the project, to prevent the eroding of soil and the silting of rivers, streams, lakes, reservoirs, other water impoundments, ground or roadway surfaces, or other property. Erosion control practices to be used for this project are shown on the drawings and are to conform to NCDEQ.

2.1 CRUSHED STONE

2.2 GRASSING

A. Comply with Section 02930: Grassing.

2.3 SILT FENCE

A. Posts:

1. Steel posts shall be self-fastener angle steel type, 5' in length.

2. Wood posts shall be 3" diameter or 3" square.

B. Provide not less than No. 9 wire staples, 1.5" long for fastening wire mesh.

C. Woven wire shall conform to the requirements of ASTM A116, Class I zinc coating for wire. Each woven square shall measure 5.33" X 12". The top and bottom wires shall be 10 gauge. All other wires shall be 12½ gauge.

D. Wire mesh is not required with synthetic, extra strength filter fabric providing puncture strength of 50 psi in accordance with ASTM D751.

E. Filter fabric shall be Mirafi 700X as manufactured by Celanese Fibers Co., Bidim C34 as manufactured by DuPont or equivalent.

2.4 EROSION CONTROL BLANKET

A. Use erosion control blanket S150, from North American Green or approved equal.

02260-2

3.1 GENERAL

A. Construct and maintain all erosion control measures until the substantial completion of the project.

3.2 CONSTRUCTION ENTRANCE

A. Construct a gravel area or pad at points where vehicles enter and leave a construction site.

B. Clear the entrance and exit area of all vegetation, roots, and other objectionable material and properly grade and place gravel to the grade and dimensions shown on the plans.

C. Construct drainage channels to carry water to a sediment trap or other suitable outlet.

D. Use geotextile fabrics to improve stability of the foundation in locations subject to seepage or high water table.

E. Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction site by periodic top dressing with two inches of stone.

F. After each rainfall, inspect any structure used to trap sediment and clean it out as necessary.

G. Immediately remove objectionable materials spilled, washed, or tracked onto public roadways.

3.3 TEMPORARY GRASSING

A. Provide a temporary cover for erosion control on disturbed areas that will remain unstabilized for a period of more than 30 days in accordance with Section 02930.

B. This practice applies to cleared areas, diversions, dams, temporary sediment basins, temporary road banks, and topsoil stockpiles where vegetation is needed for less than 1 year.

C. Provide grassing on slope 5% or greater within 14 days of disturbance.

1. Comply with Section 02930: Grassing.

3.4 SILT FENCE

A. Provide silt fence barrier where shown on the plans and on utility construction parallel to the disturbed trench where perpendicular sheet flow runoff occurs on disturbed areas with slopes greater than 4%.

B. Place at the extreme limits of the area to be disturbed as shown.

C. Construct temporary sediment barriers of filter fabric, buried at the bottom, stretched and supported by posts and install below small disturbed areas as indicated on the drawings to retain sediment by reducing the flow velocity to allow sediment deposition.

D. Provide spacing between posts 5'0" on center, minimum.

02260-3

E. Fasten wire mesh to wood posts with wire staples. Wire mesh is not required with synthetic filter fabric.

F. Remove sediment deposits prior to reaching one-third height of the fence.

G. Monitor site frequently and place additional silt fencing should evidence indicate that erosion is about to occur at locations other than those shown on plan.

3.5 CURB INLET PROTECTION

A. Construct temporary sediment barriers around storm drain curb inlets using block and gravel as indicated on the drawings.

B. Inspect structure after each rainfall and repair as required.

C. Remove sediment when trap reaches one-half capacity.

D. Remove structure when protected areas have been stabilized.

3.6 EROSION CONTROL BLANKET

A. Provide on areas as shown on the plans or on all embankments with slopes equal to or steeper than 2½:1.

3.7 CHANNEL BLANKET

A. Provide North American Green C350 channel blanket where shown on plans.

3.8 TEMPORARY CHECK DAMS

A. Utilize temporary check dams where indicated on the Plans.

B. Provide with Section 02270 - Rip-Rap.

3.9 MAINTENANCE

A. Place all erosion control devices or measures prior to any land disturbing activity within the drainage area they are located.

B. Periodically check erosion control devices and clean or otherwise remove silt build-up as necessary to maintain them in proper working order.

3.10 REMOVAL

A. Remove temporary structures after protected areas have been stabilized.

CHAIN LINK FENCES

02444-1 24052

SECTION 02444

A. Work included: Provide chain link fence system where shown on the Drawings, as specified herein, and as needed for a complete and proper installation. Provide swing gates as shown on the drawings.

1.3 SUBMITTALS

A. Comply with pertinent provisions of Section 01340.

B. Product data: Within 30 calendar days after the Contractor has received the Owner's Notice to Proceed, submit:

1. Materials list of items proposed to be provided under this Section.

2. Manufacturer's specifications and other data needed to prove compliance with the specified requirements.

3. Shop drawings in sufficient detail to show fabrication, installation, anchorage, and sizes of all components.

02444-2 24052

2.1 DIMENSIONAL DATA

A. Pipe sizes indicated are commercial pipe sizes.

2.2 GALVANIZING

A. On steel framework and appurtenances, provide galvanized finish with not less than the following weight of zinc per sq. ft.:

1. Posts, rails and appurtenances: 2.0 oz. per sq. ft. of surface.

2. Fabric: 2.0 oz. complying with Class II of ASTM A392, hot dipped galvanized after weaving.

3. Barbed wire: 1.2 oz. per sq. ft.

4. Tension wire: 1.2 oz. per sq. ft.

2.3 FABRIC

A. Provide No. 9 gauge or 0.149" wires in 2" mesh, with top and bottom selvages twisted and barbed.

B. Provide fabric in one piece width of 72".

2.5 BARBED WIRE AND EXTENSION ARMS

A. Type: Provide the following:

1. Provide three strands of barbed wire at the top of the fence and gates and galvanized steel posts.

2. Two 12 gage steel stranded line wires with 14 gage steel wire barbs in 4 point pattern spaced 5 inches apart.

B. Extension arms:

1. Provide cast iron or pressed steel arms, complete with provisions for anchorage to all posts, with Class 3 zinc coating complying with ASTM A 153.

2. Designed for attaching 3 rows of barbed wire to each arm at a 45° angle.

3. Capable of withstanding, without failure, a 250 lbs. downward pull at outer most end of arm.

2.6 POSTS, RAILS AND ASSOCIATED ITEMS

A. Line posts: Provide 2. 5" O.D. Schedule 40 pipe.

02444-3 24052

B. End, corner, slope and pull posts: Provide 2.875" O.D. Schedule 40 pipe or 3.5 inch steel roll-formed sections, nominal weight 5.14 lbs. per foot.

C. Gate posts:

1. Provide gate posts for supporting single gate leaf, or one leaf of a double gate installation, for nominal gate widths as follows:

a. Up to 6' wide: Use 2.875" O.D. pipe weighing 5.79 lbs. per linear foot.

b. Over 6' wide and up to 13': Use 4" O.D. pipe weighing 9.10 lbs. per linear foot.

c. Over 13' wide and up to 18' wide: Use 6.625" outside diameter pipe weighing 18.97 lbs. per linear foot.

d. Over 18' wide: Use 8.625" outside diameter pipe weighing 28.55 lbs.

per linear foot.

2. Provide dual gate posts for supporting cantilever gates for nominal gate widths as follows:

a. Up to 20' wide: Use 4" O.D. pipe weighing 9.10 lbs. per linear foot.

b. Over 20' wide: Use 6.625" outside diameter pipe weighing 18.97 lbs.

per linear foot.

D. Top rails:

1. Use 1.625" O.D. pipe, Schedule 40 or 1.625 x 1.25 inch galvanized steel channel sections provided with outside sleeve type couplings every 20 feet.

2. Provide means for attaching top rail securely to each gate, corner, pull, slope and end post.

3. Top rails shall pass through line post tops to form a continuous brace from end to end stretch of fence. Top rail shall be fastened to terminalposts by heavy pressed steel connections.

E. Post brace assemblies:

1. Braces shall be of the same material as the top rail and shall be installed midway between the top rail and the ground and extending from the terminal post to the first line post. Braces shall be securely fastened to posts by heavy pressed steel connections, then trussed from the line post back to the terminal post with a 3/8-inch diameter rod.

F. Tension wire: Provide No. 6 gauge galvanized coiled spring wire at bottom of fabric.

G. Post tops:

1. Provide wrought iron or malleable iron, designed as weathertight closure cap.

Caps shall be zinc coated with a minimum of 1.2 oz. per sq. ft.

2. Provide one cap for each post.

3. Provide caps with openings to permit through passage of top rail.

02444-4 24052

H. Stretcher bars:

1. Provide one-piece lengths equal to full height of fabric, with a minimum cross section of 3/16" x 3/4".

2. Provide one stretcher bar for each gate and end post, and two for each corner, slope, and pull post, except where fabric is woven integrally into the post.

I. Stretcher bar bands:

1. Provide wrought iron or malleable iron, spaced not over 15" on centers, to secure stretcher bars to end, corner, pull, slope, and gate posts.

2. Bands may be used also with special fittings for securing rails to end, corner, pull, slope and gate posts.

J. Truss rod bends:

1. Provide wrought iron or malleable iron to secure truss rod to end, corner, pull, slope and gate posts.

2.7 SWING GATES

1. Fabricate gate perimeter frames of tubular members.

2. Provide additional horizontal and vertical members to assure proper operation of the gate, and for attachment of fabric, hardware and accessories.

3. Space so frame members are not more than 6' apart.

4. Fabricate gate frames from pipe 1.90" O.D. weighing 2.72 lbs. per linear foot.

B. Fabrication:

1. Assemble gate frames by welding, with special malleable or pressed steel fittings and rivets for rigid connections.

2. Use same fabric as used in the fence.

3. Install fabric with stretcher bars at vertical edges as a minimum.

4. Attach stretchers to gate frame at not more than 15" on centers.

5. Attach hardware with rivets or by other means which will provide security against removal and breakage.

6. Provide diagonal cross bracing consisting of 3/8" diameter adjustable length truss rods on gates where required to provide frame rigidity without sag or twist.

C. Gate hardware: Provide following for each gate:

1. Hinges:

02444-5 24052

a. Pressed or forged steel, or malleable iron, to suit the gate size; non-lift-off type, offset to permit 180º opening.

b. Provide 1-1/2 pair of hinges for each leaf over 6' in nominal height.

2. Latches:

a. Provide forked type or plunger bar type to permit operation from either side of the…