30-APPENDIX E - COT Gas and Electric General Construction Specifications.pdf

City of Tallahassee

Gas & Electric Operations Construction Specifications Chapter A

Date Issued:

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Prepared By: Gas & Electric Operations Page

APPENDIX E

GENERAL SPECIFICATIONS

TABLE OF CONTENTS

Corresponding

Federal/State

Section Description Regulation Page

A-1 INTRODUCTION

A-2 REGULATING AGENCIES

AND STATUTES

A-3 CONTRACTOR PERSONNEL

A-4 CONTRACTOR SUPERVISION

A-5 CONTRACTOR PERFORMANCE

A-6 DELIVERY, UNLOADING,

STRINGING PIPE, VALVES AND

OTHER MATERIALS

A-7 UTILITY LOCATIONS..................................................192.321

A-8 EXCAVATION....................................................... 192.325/327/614

A-9 COATED PIPE INSTALLATION ............................. 192.319/461

A-10 PIPE NIGHT CAPS

A-11 INTERNAL LINE CLEANING .....................................192.629

A-12 BORING - CASED AND UNCASED

A-13 RAILROAD CROSSINGS

A-14 PAVEMENT/SIDEWALK REMOVAL AND REPLACEMENT

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A-15 BACKFILLING ..............................................................192.319

A-16 WARNING SIGNS AND TRAFFIC CONTROL

A-17 CARE OF EXISTING STRUCTURES

A-18 SOD, SEED AND MULCH

A-19 CITY OF TALLAHASSEE AND LEON

COUNTY STORMWATER, LANDSCAPING,

TREES AND RECEIVING WATER BODIES

ORDINANCE

A-20 CLEAN UP AND RESTORATION

A-21 AS-BUILT DRAWINGS AND GPS

A-22 GAS OPERATOR QUALIFICATION

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SECTION A-1 INTRODUCTION

This section addresses the various operations in the construction and repair of gas mains, gas services, and electric duct banks. It outlines the type, character, and quality of work required.

Furthermore, it is imperative that the Contractor review and coordinate all activity with the respective departmental representative to avoid conflicts. It will also be the contractor’s responsibility to strictly adhere to the individual specifications provided in this document.

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SECTION A-2 REGULATING AGENCIES AND STATUTES

GENERAL:

The Contractor is responsible for ensuring that all work covered by this contract and specifications is done strictly in accordance with all applicable statutes, regulations, and Owner guidelines, as well as the Federal, state, and local governmental authorities or agencies having jurisdiction including, but not limited to, the Department of Labor-Occupational Safety and Health

Administration (OSHA), the U.S. Department of Transportation, the State of Florida’s Public

Service Commission, Florida Department of Transportation, Leon County Public Works, City of

Tallahassee Underground Utilities and Public Infrastructure, and local Growth Management.

The Contractor’s Policies and Procedures are subject to, but are not limited to, those of the U.S.

Department of Transportation, Title 49 Code of Federal Regulations (CFR), Part 192 relating to gas distribution system operation, Pipeline and Hazardous Materials Regulations Office of

Pipeline Safety (PHMSA), Florida Public Service Commission (FPSC) Chapter 25-12 Florida

Administrative Code (FAC) and Federal Energy Regulatory Commission (FERC).

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SECTION A-3 CONTRACTOR PERSONNEL

GENERAL:

All Contractor personnel shall be competent and skilled in the kind of work that they are to execute and shall work in accord with other personnel. The Contractor shall immediately remove any employees that are not acceptable to the Owner. Prior to performing work for the Electric or Gas Utility, the Contractor, following the hiring any of the key positions such as crew leader, foreman, supervisor, and area manager, should seek a written approval to perform work from the Owner. The Contractor is responsible to submit to the Owner detailed information pertained to the candidate’s competency, qualifications, experience, and background.

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SECTION A-4 CONTRACTOR SUPERVISION

GENERAL:

All work shall be subject to inspection and approval by the Owner’s inspectors. It is the

Contractor’s responsibility to notify the Owner daily with the number of working crews, their location, name of the foreman and pipe welder/fuser, and type of work to be performed. The

Contractor shall always have direct supervision present to manage the work in progress.

Furthermore, any work that is completed without the Owners presence is subject to rejection.

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SECTION A-5 CONTRACTOR PERFORMANCE

GENERAL:

It is the Contractor’s responsibility to always maintain adequate staffing, equipment, and construction materials to accommodate the Owner’s projected workload, schedules, and deadlines in a satisfactory manner. During busy times this may require the Contractor to adjust resources or utilize alternate means to fulfill the Owner’s project requirements.

The Contractor is responsible for the following:

• Maintaining a sufficient inventory or always have access to construction materials to complete scheduled projects; notify Owner in advance, a minimum of 2-weeks, and in writing of any material delays or shortages of materials.

• Increasing or adjusting staffing levels to meet Owner’s schedules and deadlines.

• Adhering to the Owner’s project deadlines. Project duration is determined based on the following criteria:

1. New Gas Mains – The minimum acceptable daily per crew production is 400 linear feet. The Owner will allow the Contractor one day at the beginning of the project for mobilization and set-up as well as two additional days at the end of the project for testing, demobilization, and site restoration. Relocation projects – The minimum acceptable daily per crew production is 300 linear feet. The Owner will allow the

Contractor one day at the beginning of the project for mobilization and set-up as well as two additional days for demobilization and site restoration after completion.

2. Gas Service Taps – Should be completed within 14 calendar days following notification by Owner of service tap request. Tap completion entails but is not limited to pipe installation, testing and site restoration. (NOTE: At the discretion of the Owner, there may be taps that require immediate installation.)

The Contractor must provide 24-hour on-call personnel to handle construction issues, emergencies and customer complaints.

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SECTION A-6 DELIVERY, UNLOADING, STRINGING PIPE,

VALVES AND OTHER MATERIALS

Applicable Codes: CFR, Title 49, Part 192.328 & 461

GENERAL:

The Contractor will place the order for pipe, valves, and fittings (except where noted on the drawings) required for this construction. All valves, fittings, and miscellaneous material will be shipped to destinations designated by the Contractor. The Contractor shall provide adequate equipment, space, and personnel to unload, receive, protect and store materials. The Contractor shall load and haul material from storage to construction sites in a manner that will avoid damage to the materials and is satisfactory to the Owner. The Contractor will pay for any demurrage or temporary storage for failure to unload material during the prescribed time allowed by the carrying company.

All materials having machine surfaces will be stored in a manner which prohibits contact with the earth. All materials including valves, fittings, and coating materials will be handled and stored in a manner to protect them against damage or corrosion.

Care will be taken in loading, transporting, and unloading pipe to prevent damage. Pipe will not be dropped. All pipe will be examined before installation and no piece will be installed which is found to be defective. If any pipe fails to meet specifications or is found to be defective, it will be removed and satisfactorily replaced at no additional expense to the Owner.

The Contractor will be responsible for all materials delivered to him/her and the disposition thereof until final acceptance of the completed work and release of the Contractor from its obligations hereunder. The Contractor must report any pipe or other materials damaged by the carrier for inspection to the carrier in writing on the freight bills. Any pipe or material damaged by the

Contractor will either be replaced or repaired and reconditioned at the Contractor’s expense as the

Owner may elect.

The Contractor will haul and string pipe in such a manner as to minimize interference with the normal use of streets, alleys, or land crossed by easements. Gaps will be left in pipe strings to permit the normal use of land (e.g. the passage of farm stock) and streets or alleys to not unnecessarily obstruct or inconvenience the traveling public. Refer to Section B-8, PROTECTIVE COATING for further detail on the proper handling of mill coated and epoxy coated pipe.

All material furnished by the Owner and not used shall be returned to the utility within five (5) working days upon completion of the project.

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SECTION A-7 UTILITY LOCATIONS

Applicable Codes: CFR, Title 49, Part 192.614

GENERAL:

The Contractor will be responsible for notifying Sunshine State One-Call, (811) and provide all the necessary information required for utility locations. The Contractor will schedule his/her work in accordance with the normally required advanced notification time period (a minimum of 2 full business days) to allow for proper utility location(s). This includes lines that have not been accepted by City, i.e., private utility company's line, water, sewer, or electric lines owned by a homeowner or business. Sufficient attention to sprinkler/irrigation systems, septic systems, and invisible fences installed by homeowners will be observed and avoided, if located by the owner, during the installation of service lines.

The Contractor will be responsible for locating installed utility facilities until they have been put into service and the as-built drawings, and valve ties, have been accepted by the respective utilities.

The location of gas lines, electric conduit, including joint trench, is the responsibility of the

Contractor until facilities are pressurized or energized and accepted by the Owner.

It will be the Contractor's responsibility to either be part of the one-call concept or furnish the City

24 hours, seven days a week, dispatchers with phone numbers for day and night. The Contractor must have the correct location device for mains and valves. If the tracer wire is broken, it will be the Contractor’s responsibility to provide location stations at each end of a bore thereby enabling plastic pipe to be located in both directions.

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SECTION A-8 EXCAVATION

Applicable Codes: CFR, Title 49, Part 192.325 & 327

GENERAL:

The Contractor shall excavate or dig all required trenches and pits as directed, specified, or shown on construction drawings. All materials not suitable for backfilling and required compaction shall be removed and disposed of in compliance with all applicable local codes/ordinances and/or environmental regulations. Unsuitable materials shall include, but not be limited to, rocks, pure clay, gravel, organic matter, hard pan, and shale. Suitable natural materials for backfilling shall be non-organic, homogenous, fine/small grained, and capable of achieving consistent, dense compaction. Suitable materials shall include uniform grain sand, native sand/clay mixes (when appropriate and ratio dependent), and crushed limerock.

Unless otherwise specified or illustrated on accompanying drawings, the depth and width of all trenches and pits will allow for the easy installation of all conduits, pipes, valves, manholes, pits, etc. The bottom of a trench will be smooth and free of all hard dirt chunks, rocks, or other foreign objects.

The Contractor will furnish all materials and supplies necessary for the completion and maintenance of a trench; including water control, shoring, and any other materials that are needed to stabilize and maintain a trench line. The trench will be kept free from water in so far as practicable. No extra payment will be made for de-watering, due to rain or overnight flooding, as compensation for these items are to be included in the contract unit price per bid item. Such sheeting will not be removed until backfilling has progressed to a stage such that no damage to pipelines, conduits, structures, or pavement will result from its removal.

The Contractor shall be solely responsible for providing ditch and/or trench safety retaining

(shoring) devices or equipment in compliance with O.S.H.A. safety standards and the COT Gas

Operations & Maintenance Manual. The Contractor shall also be responsible for providing and using all necessary equipment associated with manhole (confined space) and trench work such as water pumps, ventilating fans or blowers, personal protection, retrieval harnesses, etc.

Earth excavated from large bore pits will be covered with visqueen plastic sheeting or tarps if it is left overnight, or if rainfall is expected during the construction period. Excavated earth will also be placed such that if there is a rainfall earth will flow back into the trench and not onto pavement or private property. Excavated material will be neatly piled at a sufficient distance back from the edge of the trench to avoid overloading and prevent slides or cave-ins and kept trimmed up to be of as little inconvenience as possible to the public and adjoining property owners. No extremely high earth mounds will be allowed which would impede the traffic flow (vertical/horizontal traffic site distances).

Whenever applicable, the Contractor shall take appropriate measures to properly secure all loose

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Excavations for underground trenches (and pits) shall be in accordance with construction specifications, drawings, Owner directions, and all applicable environmental/right-of-way utility permits. Excavations shall be done in a manner to minimize damage to trees and surrounding significant surface features/structures.

The Contractor shall avoid vertical and horizontal conflicts with other underground utilities including all associated subsurface or surface structures. Minimum separation distances shall be as prescribed by the respective utility Owners (City of Tallahassee Electric or Gas) administering the work and reflected in the construction specifications/drawings. If said minimum separations cannot be achieved, then the Contractor shall notify the Owner and a satisfactory alternative route, installation method, or minimum separation distance will be determined. Excavation or boring work shall not undercut or destabilize any pre-existing facilities or structures. As necessary, the

Contractor shall coordinate all excavation and boring work with the owners of said conflicting structures or facilities to prevent damage due to settling or shifting. The Contractor shall be responsible for notifying the Sunshine State One Call underground utility location service as well as using “pot hole” excavations by core drill only, as needed, to visually verify the exact depth, size, and type of an underground conflict at no cost to Owner.

Special circumstances, as identified in the construction specifications and/or by the Owner, may require the Contractor to provide and allow access across open trenches for the safe passage of livestock, vehicles, etc. Likewise, certain spoil banks may be required to have openings to prevent the confinement of water.

When only gas mains are being installed, the contractor is encouraged to plow the mains wherever practicable. It will be the contractor’s responsibility to verify there is adequate slack in the polyethylene main as well as the appropriate placement and integrity of tracer wire and warning tape.

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SECTION A-9 COATED PIPE INSTALLATION

Applicable Codes: CFR, Title 49, Part 192.319, 328, and 461

GENERAL:

The Contractor will be required to provide padded slings, calipers, and/or rubber tired dollies for handling coated pipe. The use of chains or belts reinforced with wire cable will not be permitted.

The crew will not assemble more pipe than can easily be handled (lowered and positioned in the trench) by the available equipment and manpower.

Coated pipe will be carefully lowered into the trench to avoid damaging the coating. It should be lowered close to its final position to minimize movement in the trench. Refer to Section B-8, PROTECTIVE COATING.

Where the trench runs through rock, the sides and bottom of a trench will be cleared of all loose or projecting rock that might damage the protective coating or covering on the pipe. The Contractor will provide a continuous 6" thick bedding of earth and sand in the bottom of a trench before the pipe is lowered in. It may be necessary to purchase and haul in padding because use of agricultural topsoil will not be permitted.

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SECTION A-10 PIPE NIGHT CAPS

GENERAL:

The open ends of the lines will be securely closed at the end of each day's work to prevent entrance of water, mud, trash or small animals and will not be reopened until work is resumed. Only manufactured pipe night caps may be used. In no events will rags, wastes, etc. be used to plug the ends of the pipe. Any obstructions remaining in the line after the completion thereof will be removed at the expense of the Contractor.

Where the line is welded in long segments as drag sections for lanes, driveways, highways, railroads, rivers, creeks, or drainage ditch crossings, or any other location where necessary, the ends of the long sections will be closed and kept closed in the above manner by the Contractor until such long sections are finally joined.

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SECTION A-11 INTERNAL LINE CLEANING

Applicable Codes: CFR, Title 49, Part 192.629

GENERAL:

Each gas pipe joint, including casing, will be thoroughly cleaned to remove all dirt and foreign matter from inside the pipe. On pipe sizes smaller than 2", the Owner will allow blowing down the line.

For gas pipe sizes 2" and larger only pigging of the line will be allowed. Rag swabbing will not be allowed. If pigging is used, the Inspector will designate the length of line to be pigged depending upon the size of the project, irregular fitting locations, etc. Pigs will meet City Specifications.

Electric conduits will be thoroughly cleaned to remove all dirt and foreign matter from inside the pipe and a pig pulled through the pipe. A single pulling string shall be pulled through and left in each duct then sealed with duct tape or endcaps. Duct banks will not be accepted until this is done and it is demonstrated that every duct is free of obstructions.

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SECTION A-12 BORING - CASED AND UNCASED

Applicable Codes: CFR, Title 49, Part 192.323 & 461

GENERAL:

Whenever concrete walks, paved driveways, paved streets, or other paved surfaces are to be crossed by pipeline, the Contractor will, unless the Owner specifically consents to excavation, bore the pipe under such surfaces. Pushing the pipe will not be allowed except through open bores.

Steel casing pipe will conform to the requirements of ASTM Designation A139 Grade "B.” For highway crossings, the casing shall have a minimum wall thickness of 0.188” and have a minimum nominal diameter of two inches (2”) larger than the carrier pipe diameter. For railroad crossings, the minimum casing diameter will be four inches (4”) larger for carrier pipes 6" diameter or greater.

The casing pipe size shown or indicated on construction plans will be furnished. In addition, all insulators, casing end seals, casing vent pipes, vent cap and electrical testing will be performed using a standardized manufactured device. Vent pipes will be coated to prevent corrosion from occurring.

All work will be performed in conformance with the requirements of the agency having jurisdiction of the area or utility involved. Any special requirements of the agency such as insurance, flagmen, etc. will be strictly adhered to during the performance of the work on this

Project. The Contractor, at no additional cost to the City, will comply with all special requirements, as directed.

A jacking pit will be excavated, backfilled, and compacted in compliance with the agency having jurisdiction. Sheeting and bracing installed by the Contractor to maintain the stability of the pit walls are part of the Contractor's expense for a jacked crossing.

Casing pipe will be installed in accordance with approved jacking and boring methods. The

Contractor will maintain the necessary line and grade as indicated on the construction plans. The installation of casing pipe will proceed with a pit excavated at a safe distance from the edge of the roadway or railroad. Construction will not interrupt traffic on the roadways or railroads. All utilities being crossed by casing pipe will be spot located with a minimum vertical and horizontal clearance of 12" between the crossing pipes. All casing vents will be placed within the right-of-way, unless approved by the Inspector and the affected private property owner.

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Tolerance for installation of the casing pipe will be as follows:

1. Elevation - to grade or a maximum of 12" above or below grade measured at the far side of the bore regardless of the length of the bore.

2. Plan Location - plus or minus one foot measured at the far side of the bore regardless of the length of the bore.

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SECTION A-13 RAILROAD CROSSINGS

Applicable Codes: CFR, Title 49, Part 192.111 & 467

GENERAL:

The construction of all railroad crossings, including all details incident to the installation of such crossings, will be in accordance with the drawings and/or will comply with such specifications as may be required by the railroad engineers, or other authority having jurisdiction.

All railroad crossings will be bored. Open trenching across railroad beds will not be permitted except in specific cases and then only after all means of boring have been exhausted and proper permission has been obtained by the Owner's representatives from authorities having jurisdiction.

In the event permission is granted to open trench across a railroad bed, all backfilling of such open trenching on the right-of-way will be accomplished by placing suitable material in layers of six inches (6”) in thickness and each six-inch (6”) layer mechanically tamped with a pneumatic tamping device (or equal) until the degree of compaction is equal to or more than the density of the surrounding undisturbed earth. If the material removed from the open trench is not suitable for backfill and tamping due to water saturation or nature of the material, then the Contractor is obligated to obtain suitable material. Backhoe buckets will not be used for tamping.

After backfilling, the surface of the railroad bed will be replaced with material suitable in quality and quantity in a manner satisfactory to authority having jurisdiction. The Contractor, in addition, will be bound to the construction specifications set forth in the various permits acquired by the

Owner. Where the Contractor must cross over railroads with equipment at other than a public crossing, the Contractor will meet requirements of each railroad company and will acquire the necessary permission by application to the proper railroad officials and pay fees a reasonable length of time before such crossing is needed in order that the railroad company can clear any required licenses or agreements, install planking plus other materials, lift wires, and do other things necessary to protect railroad property and traffic.

All casings will be electrically insulated from the carrier pipe. A test of cased road crossings for electrical shorts will be made; however, if the Owner's technician is not available for making such tests at the time of installation, the Contractor will proceed with the installation. The use of welding machines to check the electrical insulation of the carrier pipe and casing is strictly prohibited. The

Owner must first approve any instrument or device that the Contractor wishes to use any time for testing of electrical insulation. If a cased crossing shows an electrical short at any time prior to acceptance of a completed project, the Contractor will remove carrier pipe, make all repairs necessary, and reinstall the pipe. Casing will be tested for shorts immediately following:

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b) At completion of the tie-in prior to backfilling, and

c) After backfilling to ensure that the carrier pipe is insulated electrically from the casing.

Any shorts resulting from faulty insulating material will be the Contractor's responsibility.

Cathodic test station assemblies installed, as required by the drawings or by the Inspector, which are found defective in any way prior to acceptance of the total project will be repaired by the

Contractor.

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SECTION A-14 PAVEMENT/SIDEWALK REMOVAL AND

REPLACEMENT

GENERAL:

Extreme care will be exercised to prevent pavement damage. Contractors will be responsible for pavement repair and/or resurfacing as per specifications of the authority responsible for the right-of-way. Pavement removal will only be allowed when appropriately permitted. Pavement, which is to be removed for open-cut trenching, will be cut vertically with a power-driven friction saw prior to removal. The surface will be scoured to sufficient depth to provide uniform, straight, break lines. All removal of the pavement will conform to local, County, State or Federal requirements where applicable. Under no condition will the pavements be cut with a trenching machine, power shovel, or backhoe. The width of the cut of pavement or sidewalk will be two feet wider than the top of the trench (i.e. one foot on each side of the trench). If the trench excavation becomes wider than the initial cut, the pavement or sidewalk will also be re-cut at least one foot back from all edges of actual excavation by the Contractor at his/her own expense.

Pavement, driveway, or sidewalk material will be separated from excavated materials and will not be placed in backfill but will be satisfactorily disposed of by the Contractor. Base materials may be salvaged and stockpiled for reuse, but such reuse of base materials will be subject to the review of the right-or-way Owner.

All pavements and sidewalks removed will be replaced with base and surface materials which conform with local, County, and State road designs and, as required or feasible, in thickness and quality to materials removed. The minimum limerock (LBR-100) and asphalt (500 lb stability) requirements are delineated by roadway classification as follows: Major Arterials require 8” limerock and 4” of asphalt, Minor Arterials require 8” limerock and 3.5” of asphalt, Major

Collectors require 8” limerock and 3” asphalt, Minor Collectors require 6” of limerock and 2.5” of asphalt, and Local Streets require 6” limerock and 2” of asphalt. Minimum sidewalk replacements will be 4" thick for pedestrian traffic areas and 6" thick for driveway areas using Class I concrete

(2500 psi). All painted street markings and other traffic control devices will be restored to former conditions. Use Safety Coatings Co. Roadrunner Traffic marking paints, or approved equal, and

Ferro Co. glass spheres or approved equal. Pavements with traffic control devices and sidewalks will be replaced as soon as practicable after compaction of backfill. Compaction shall be per

Owner specifications.

Workmanship and materials will be in accordance with best standards practice for work of this type and will conform to the requirements of the latest edition of the FDOT Standard

Specifications for Road and Bridge Manual.

Pipe crossings and installations along all State highways will be made in accordance with details shown on the plans and in full compliance with State Department of Transportation requirements.

All materials and workmanship will be subject to the approval of the local maintenance engineer for the Florida DOT.

Curb or curb and gutter removals, where required in construction of this work, will be held to a

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The Contractor will replace all curb or curb and gutter, which have been removed. Curb and gutter will be replaced as soon as possible after backfill is placed and compacted and will be a duplicate in all respects to original construction. Workmanship will be in accordance with the authority having jurisdiction (City, County, State).

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SECTION A-15 BACKFILLING

Applicable Codes: CFR, Title 49, Part 192.319

GENERAL:

Trenches will not be backfilled until all required tests are performed and the line installed conforms to the specified requirements. All natural gas lines will require the installation of warning tape and tracer wire. See the specific requirements of the warning tape for gas and electric in Chapter B, C & D. Compaction shall be per Owner specifications.

Where the gas pipe has been newly coated or the coating otherwise repaired, the trench must not be backfilled until the coating has thoroughly hardened. Where the trench runs through rock, cinders, or rock fills, the excavation will be carried to an elevation, which will provide a bedding course of not less than six inches (6”) below and around the body of the pipe. Care will be taken to prevent damage to the protective coating by any rock in the backfill. Any damage caused in this manner will be repaired by the Contractor at his expense. Large rocks or boulders, of such size the

Owner's inspectors may direct to be taken out of a trench and not used in the backfill, will be removed, and disposed of at the Contractor's expense. All backfill will be laid in 6"layers and proper mechanical tamping equipment for that site will be used.

Backfill will consist of the following material:

TYPE "B" BACKFILL

Type "B" material will be a select granular material free from organic matter and of such size and gradation that desired compaction can be readily attained. When tested in accordance with the latest ASTM D422, it will conform to the following requirements:

a) Maximum particle size not to exceed 3".

b) At least 95% will pass a 1-1/2" sieve and not more than 10% will pass No. 200 above.

c) Coefficient of uniformity will be six or greater.

d) Material will have a sand equivalent of 35% or greater.

Material may be clean natural sand or gravel, imported quarry waste, select excavation, or a mixture thereof. Soil reports will be submitted ten days in advance of intended use for approval by the Owner.

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TYPE "D" BACKFILL

Type "D" material will be material obtained from the Contractor's excavation. Such backfill material will be free of debris, deleterious materials, organic material, and expansive soils. This backfill material will contain no materials larger than four inches (4”). Under no circumstances are destroyed pavement materials, curbs, broken concrete, etc. to be included in the backfill. After all inspections are completed, the Contractor will backfill each section to prevent floating of the pipe in the event water enters a trench from any cause. Contractors will closely follow with the remaining backfill so that a minimum length of a trench will remain open at any time.

All loose dirt will be scraped and removed from the right-of-way. Backfill should resemble original characteristics of the land before construction (i.e. grade, pitch, texture).

Where pipelines are placed beneath a paved road bed or driveway, within five feet of the edge of an existing or proposed pavement, or base course, the backfill will be tamped in six-inch (6”) lifts to the surface. Such tamping will be done with a mechanical tamper of an approved type.

Note: A backhoe bucket can be used for the last six-inch (6”) of backfill. Compaction within these areas will meet the following requirements:

Minimum required densities, expressed as a percentage of maximum density as determined by

ASTM D698 (Standard Proctor Moisture - Density Test), will be as follows for the indicated areas:

1) Florida Department of Transportation (FDOT) road right-of-way: Per FDOT

Specifications

2) Leon County Road right-of-way: Per Leon County Specifications

Backfill for trenches beyond five (5) feet off the edge of an existing or proposed pavement or base course will be compacted to 95% of the maximum density of the Standard Proctor.

Immediately after backfilling, the soil must be stabilized with hay and seed, or sod, to prevent erosion and will be returned to its original condition Any landscaping disturbed will be restored to its original condition. The type of seed should concur with the season. All backfill will be maintained by the Contractor for twelve months after final acceptance by the Owner of the work performed hereunder.

All cubic yards of fill will be paid at a mutually agreed upon ditch width minus volume of conduits.

Mutually agreed upon ditch widths will be defined as the minimum size standard backhoe bucket width to meet the requirements of the duct bank plus six inches (6”).

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Example: Duct bank requires 20” ditch width. Minimum standard size backhoe bucket is 24”. The six inches (6”) would be added to the 24” for a total of 30” ditch width. The thirty inches (30”) would be the mutually agreed upon ditch width.

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SECTION A-16 WARNING SIGNS AND TRAFFIC CONTROL

GENERAL:

The Contractor will supply and always utilize during the progress of construction an adequate number of red flags, barricades, warning signs, flagmen, or any other means of warning to prevent accident and injury to persons and property. All such signing shall be in accordance with applicable

OSHA regulations and the FDOT Manual on Uniform Traffic Control Devices. The Contractor will adhere with the requirements of the agency having jurisdiction of the area involved such as the time and Maintenance of Traffic, etc. The Contractor is responsible for providing maintenance of traffic for all construction jobs.

Contractor will post signs five (5) working days prior to any construction activity to inform the public. Signs will be installed on public right-of-way for projects lasting five working days or more.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

SECTION A-17 CARE OF EXISTING STRUCTURES

GENERAL:

All existing trees, fences, pipes, conduits, wire, manholes, embankments, or other structures in the vicinity of the work will be supported and protected from damage by the Contractor during construction and until completion of the work. The Contractor will be liable for all damage done to such structures, as provided above and will hold the Owner harmless from any liability for the expense of injuries, damages, or repairs. All damages should be resolved in a timely manner.

Mailboxes, signs, newspaper boxes, etc. may be removed and replaced with the owner’s permission.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

SECTION A-18 SOD, SEED, AND MULCH

GENERAL:

The payments for seed, mulch, and sod will be as follows:

• Restoration of sod, which will be installed as required by a right-of-way permit or as approved by a City of Tallahassee representative, will be paid per the Price Schedule and based upon the ditch width plus twelve inches (12”). The typical width of a gas only ditch is 18” to 24”. Therefore, the restoration payment for gas installation only will not exceed three feet (3’) times the linear length of the excavation.

• Sod restoration for a typical joint trench width of two feet (2’) will be paid per the Price

Schedule and based upon the trench width plus twenty-four inches (24”) multiplied times the length of the ditch. Payment will be shared equally between the gas and electric departments.

• There will be no reimbursement for sod when paying established area prices as this price already includes sod restoration.

• At locations where seed and mulch restorations are approved, payment will be per the Price

Schedule and based upon the ditch width, volume of earth removed, site conditions, and permitting agency. Prior to beginning excavation, City Representatives and the Contractor will agree upon the terms of payment. For typical joint trench projects the area of restoration will not exceed eight feet (8’) in width. Payment will be shared equally between the gas and electric departments.

• The Contractor shall restore all disturbed areas to their original condition.

• The Owner’s inspector and the Contractor will mutually agree upon payment for restoration when installing service taps.

The contractor shall furnish and appropriately lay, peg, and spread the sod, seed, and mulch according to the following requirements:

Sod:

1) Sod will be of the same variety that existed prior to disturbance.

2) The Contractor is responsible for the removal, storage, and reinstallation of the existing sod, or the replacement with a matching type of new sod as required by the Owner.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

3) The Contractor shall install and maintain appropriate soil stabilization at bore pits. There will be no additional cost to the Owner for sod at bore pits or tie- ins.

4) The Contractor will be responsible for the maintenance of sod for a period of thirty (30) days.

Seed:

1) Grass seed shall be a mixture of 20 pounds of Bermuda and 80 pounds of

Pensacola Bahia seed per acre during the months of February through

September.

2) Grass seed shall be a mixture of 50 pounds of Winter Rye and 50 pounds of

Pensacola Bahia seed per acre during the months of October through January.

3) There will be no additional cost to the Owner for seed and mulch at bore pits or tie-ins.

Mulch:

1) Seeded areas shall be mulched in a continuous blanket immediately following the compacting and seeding operations using at least 1-1/2 tons of hay per acre.

The Contractor is responsible to maintain the mulch until new grass is established.

2) The contractor will be responsible for the survival of the newly installed sod and seed. If rutting has occurred in the mulch, the contractor will have to relay or spread seed and mulch at no additional cost to the Owner.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

SECTION A-19 CITY OF TALLAHASSEE AND LEON COUNTY

STORMWATER, LANDSCAPING, TREES AND

RECEIVING WATER BODIES ORDINANCE

GENERAL:

The Owner will be responsible for obtaining the necessary consent or permission in accordance with the City of Tallahassee and Leon County Environmental Ordinances. The appropriate

Environmental Management General Permits will be made available by the Owner.

The Contractor is required to train their construction site workers in stormwater, erosion, and sedimentation control, as well as have a foreman, supervisor, or other responsible person who is certified under the Florida Stormwater, Erosion, and Sedimentation Control Inspector Training

Program available on site for each project. The Contractor will make these training records available to the Owner as requested. The Florida Development Manual, Erosion and Sediment

Control Best Management Practices shall be referred to for proper erosion control management.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

SECTION A-20 CLEANUP AND RESTORATION

GENERAL:

Contractors will keep the right-of-way clear of barrels, skids, defective materials, and all other construction debris daily behind its operation to the satisfaction of the Inspector, landowners, county officials, state officials, or other authority having jurisdiction.

Restoration is an integral part of the work. Upon completion of the work, and before acceptance of final payment for the project by the Owner, the Contractor will restore all property, both public and private, which has been disturbed or damaged directly due to the construction work. The

Contractor shall ensure that the construction site, where gas main is installed is restored, at a minimum, to preconstruction conditions within 3 days. The Contractor shall ensure that the construction site, where gas service is installed is restored, a a minimum, to preconstruction conditions on the same day as installation.

In case of a dispute, delay in restoration, or inconvenience to the public, the Owner will restore and clean up the construction site plus charge the cost to the Contractor as the Owner determines to be appropriate.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

SECTION A-21 AS-BUILT DRAWING AND GPS

GENERAL:

The Contractor will mark all newly buried pipes, conduits, valves, etc. The installed structures will be located by placing a temporary marker directly over the ground by use of stakes, flags, etc. All valve boxes and test stations must be visually identified through the use of markers or paint.

Project as-built drawings or red lining, GPS for electric projects will conform to the standards and specifications for GPS Data and As-Built deliverables to Gas and Electric Utilities listed in this section. The Owner may request the right to verify the marker location by having the main potholed by the Contractor.

Project as-built drawings must be submitted by the Contractor to be reviewed and approved by the

Owner before payment is authorized.

The following is to ensure that Global Positioning System (GPS) data points and As-Built

Deliverables submitted by contractors to the City of Tallahassee Electric and Gas Utility, and GIS

Division meet the requirements for quality and consistency of these same entities.

Prior to the issuance of final payment the City of Tallahassee Electric and Gas Utility, , and their respective GIS Sections shall approve the deliverables described herein.

A. GPS Data (Electric Utility Only)

1. The GPS points attribute table shall include: X and Y coordinates (in U.S. state plane

Florida north NAD 83 HARN FIPS 0903 feet) of the following:

a. Electric Utility straight conduit or duck bank segments as per paragraph 7 below and the capped end of a conduit or duct bank. The physical center or mid-point of all underground Electric Utility manholes, termination cabinets, metering cabinet pits, transformer pads, vaults, pull boxes, service/light pedestals, street/area light poles, switchgear pits, riser terminations, and wherever a conduit or duck bank changes directions or curves. The duct bank arrangement/layout with conduit sizes, overall duct bank height, overall duct bank width, the duct material, and the depth below finished grade of electric conduit or duct banks shall be recorded at each X-

Y data collection point.

b. In addition to X and Y coordinates, the GPS attribute table shall include the date of collection and a unique Electric Utility job number.

2. The coordinate system shall be U.S. state plane Florida north NAD 1983 HARN FIPS

0903 feet.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

3. The Data Dictionary or Form used for all data collection should be verified by the

Electric Utility GIS Division.

4. The GPS data shall be provided in ESRI shapefile (*.shp) format on a CD, flash drive, or downloaded from the Contractor’s ftp site.

5. Data shall be collected with a minimum of sub-meter accuracy.

6. In areas where loss of GPS signal occurs, offsets should be used from the closest obtainable satellite beacon lock.

7. GPS points (with depths) shall be collected at 100-foot intervals along relatively straight segments of electric conduit or duck banks A minimum of one

(1) data point will be collected at the mid-point of straight segments shorter than 100 feet.

B. As-Builts

1. The G as As-Built field documents shall show type, size, material, and locations of gas valves, main, and fittings; length of main in feet; and depth of main in inches.

2. The Electric As-Built field documents shall be marked up with any changes from the plan and indicated the number of 90-degree elbows in each run.

3. The As-Built deliverables shall be on hard copy and shall be clear, legible, concise, complete, and accurate.

4. The Gas As-Builts shall accurately show and label all valves, main, fittings, field ties, and objects/structures from which ties are measured.

5. Gas ties shall be collected at 100-foot intervals along relatively straight segments of main.

6. Gas ties shall be collected at all gas valves, end-of-main, tie-ins, elbows, and wherever the main changes direction or curves.

7. Gas ties for each gas feature shall be “pulled” (distances shall be measured) from three

(3) permanent, fixed, aboveground objects/structures (as described in detail below).

The gas feature and the objects/structures selected for each tie shall be clearly and accurately shown and labeled.

8. If variations and inconsistencies from the design plans occur, they shall be verified and clearly marked on the As-Builts.

9. Any abandoned and/or removed main, valves, and fittings shall be clearly indicated on the As-Builts.

C. Specifications for Pulling and Recording Ties

1. The following specifications are intended to address methods, guidelines, and requirements for pulling ties and measurements for underground gas facilities, Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

Valve including valves, main, fittings, and services.

2. The intent and purpose of this document is to establish unified standards and to ensure the quality and consistency of data received by requesting utilities and the GIS division.

3. All personnel are encouraged to use common sense while performing the work described herein and should consider that the documentation:

a. Must be easily interpreted by others

b. Will be utilized by other personnel to perform proper locating.

c. Will be utilized during emergency response as well as at night

d. May be accessed at a much later date

4. Ties shall be pulled at all valves, end-of-main, tie-ins, elbows, and locations where the main changes direction, including gradual curves.

5. Ties along a relatively straight segment of main should be pulled every 100 feet. Ties collected along main where it changes direction or curves are in addition to the ties collected every 100 feet.

6. All ties will be pulled from at least (3) of the nearest, most permanent, and/or accessible objects/structures such as: manholes, storm drains, on-ground transformers, fire hydrants, telephone pedestals, and power poles.

FH SG

MH

Valve

7. When pulling a tie from a round object/structure (manhole, fire hydrant), pull from the center / top point. However, if pulling from a power pole, pull from the nearest edge.

SMH PP

8. When pulling a tie from a square or rectangular shaped object (steel storm drain

/grate, ground transformer), pull from the nearest corner.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

ET

Elec.

Trans

Box SG ET

Valve

9. If any of the aboveground structures (power pole, pedestal, transformer, etc.) have an identifying number (such as a tag or badge #), record the badge or tag # on the as- built.

10. Measurements should not exceed 100 feet and should not cross major roads/intersections, whenever possible.

11. All documents containing ties should be signed by the person who performed the work.

12. For tie to permanent structures, use typical field objects and label according to the following list of abbreviations:

BLDG - Point on Building PP - Power Pole

BOC - Back of Curb1,2 SD - Storm Drain

CB - Catch Basin SDMH - Storm Drain Manhole

CP - Concrete Pole SDW - Point from Sidewalk1,2

CPD - Concrete Pad SG - Storm Grate

CTV - Cable TV Pedestal SMH - Sewer Manhole

CULV - Culvert STL - Street Light

DITCH - Point on Concrete Ditch1,2 TMH - Telephone Manhole

DRN - Drain TP - Telephone Pole

EB - Electric Box TPD - Telephone Pedestal

EMH - Electric Manhole TSB - Traffic Signal Box

EOP - Edge of Pavement1,2 TSP - Traffic Signal Pole

ET - Electric Transformer TSPD - Traffic Signal Pedestal

FH - Fire Hydrant VP – Vent Pipe

FO – Fiber Optic Post WALL – Wall1,2

FOC - Front of Curb1,2 WM - Water Meter3

MEDIAN – Median WV - Water Valve

MH - Manhole

NoBlo – NoBlo surface marker

1These features should only be used for ties to valves or fittings when ties to two other permanent aboveground structures are also provided and when there is no other third suitable structure nearby to pull from.

Date Issued:

Revised:

07/17/00 09/13/2022

Prepared By: Gas & Electric Operations Page

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