Exhibit 3
Denton Municipal Electric
City of Denton, Texas
TECHNICAL SPECIFICATION
CONSTRUCTION OF HICKORY SUB UNDERGROUND
TRANSMISSION LINE DUCT BANK
RFP#6416
I.SPECIAL CONTRACT REQUIREMENTS AND PRICE ITEM DEFINITIONS
A.Special Contract Requirements
1.The October 2004 edition of the North Central Texas Council of Governments Standard Specifications for Public works Construction will be utilized as a basis for both general and technical procedures to include types of materials and construction procedures used in the City of Denton. The following specifications and definitions are intended to (1) highlight requirements in the NCTCOG found on most projects in the City of Denton, (2) make specific requirements for materials or procedures where the NCTCOG gives options, (3) specify provisions for deviation from the NCTCOG, and (4) define the pricing items listed in Exhibit 1 Pricing Sheet. The following specifications are also numbered in accordance with the NCTCOG to aid in locating more specific requirements. In addition to this section of the technical specifications, section II Special Contract Requirements for Duct Banks also provide technical specifications to be utilized for the project.
Conflicts sometimes arise when City of Denton provisions conflict with either the plans for the project or the North Central Texas Council of Governments specifications. The following order of precedence shall generally be followed in case of conflicts; however, the City Engineer shall make the final determination:
- City of Denton construction plans
- City of Denton project specifications
- NCTCOG Standard Specifications
2.Manufacture Information
The Contractor shall submit five (5) copies of information to the City from all manufacturers for materials and equipment to be used on the project. This information shall include:
(A)Product specifications sufficient to allow the City to determine whether the materials and equipment conform to the design concepts and project specifications.
(B)Information on all warranties provided by the manufacturer.
All submittals shall be stamped by the manufacturer indicating that the manufacturer has checked the submittal for compliance with the specifications. Unstamped or certified submittals shall be returned to the manufacturer unprocessed.
Submittals shall be provided to the City prior to or at the preconstruction meeting. Construction will not be allowed to proceed until all submittals have been approved or a written waiver is given by the City.
3.Conflicts in Documentation
In the event that conflicts are discovered between this Technical Specification and the RFP instructions, the more restrictive statements shall apply.
4.Complete And Functional Construction with New Material
It is the intent of this specification to require duct bank improvement work that provide new complete and functional systems. RFP pricing shall reflect this requirement. It is not possible to specify or describe every detail of work required to complete a project of this nature or to predict problems that might be encountered. The successful Contractor will be required to provide all labor, equipment, tools, specified material, and incidental items necessary to undertake the construction and complete the project, as described herein, resulting in fully prepared and functional systems that perform to their intended purposes. Minor omissions from the specification or drawings shall not relieve the Contractor from the obligation to provide the completed project that is fully functional as intended by the City. Failure of this specification to describe each detail or incidental item necessary for a complete and functional project shall not entitle the Contractor to additional charges. Examples of items that will not be considered as basis for claims for additional cost are, but shall not be limited to, minor relocations, minor changes in the grade, differences in the actual surface of the site from that shown on the drawings, reasonable weather delays, site cleanup, etc. Further, all work shall be performed and completed in a thorough and workmanlike manner and shall follow the best modern recognized practices, notwithstanding any omissions from this specification.
5.Price Calculation for Evaluation
The price to be used in evaluating the RFPs will be constructed by applying the unit price to the quantities shown on the RFP pricing sheet to arrive at a total price for the project.
B.Price Items
Payment sections of the specifications include all material, labor, and equipment necessary to complete the project.
General:
Item 103.3 Mobilization / Demobilization
General: This item includes mobilization cost such as site equipment and personal mobilization, up front coordination and other activities to prepare for the start of work. This item also governs the demobilization for the project including record drawings, general site final clean up, equipment and personal departure from the site, and other project closing activities.
NCTCOG Reference: Item 103.3, 107.24, 107.25, 107.26
Payment: Payment shall be at the contract lump sum price for Mobilization/ Demobilization.
The combination of mobilization/demobilization will be paid once only at the initial time equipment and personnel are brought to the site. Mobilization will not be paid for replacements of equipment whether due to maintenance needs or for other reasons. Demobilization will not be paid at the final time equipment and personnel are removed from the site and all required demobilization items are satisfactorily provided. The City will consider additional mobilization cost if work must be halted on the site and work delayed until a significantly later time as long as the halted work and delay is not due to the Contractor’s negligence in performing the work.
Item 103.3 Surety Bonds
General: This item shall be used to separate the bonds as specified in the contract documents into a separate RFP item. Include all bonds with their related costs in this item except for RFP Bond.
NCTCOG Reference: Item 103.3
Payment: Payment shall be lump sum for all bonds provided for in the proposal.
Item 107.25 Disposal of Materials
Vegetative material removed as a result of work operations shall be transported off-site and deposited at a legal site in accordance with all applicable Federal, state, and local laws and regulations. Removed vegetation will not be allowed to remain in piles or mounds on the easement or surrounding property.
NCTCOG Reference: Item 107.25
Payment: No separate payment shall be made for disposal of vegetative materials. The disposal of vegetative materials shall be considered a subsidiary cost of General Site Preparation (Item 203.3)
Item 107.19.3 Trench Safety
General: Excavation protection, where required, shall be in strict compliance with NCTCOG Item 107.19.3 and the most current OSHA regulations. The Contractor shall submit three (3) copies of his site specific trench safety plan prepared by a licensed Professional Engineer in the State of Texas to the City prior to construction. The City will not review the submittal; it is simply a confirmation that the Contractor has prepared a trench safety plan as required by state and Federal law. The City assumes no responsibility for trench safety and shall be held harmless under the indemnification clause of NCTCOG Item 107.19.3.2. Any changes in the trench excavation plan after initiation of construction will not be cause for an extension of time and will require a new submittal to the City. The Contractor accepts sole responsibility for compliance with all applicable safety requirements.
NCTCOG Reference: Item 107.19.3
Payment: Payment for this item shall be at the contract unit price per linear foot of excavation protection measures utilized for the Duct Bank improvements.
Item 201 Temporary Erosion Control
This price item is covered by City of Denton Amendments to NCTCOG Specifications Item 201 Temporary Erosion Control.
Item 202.5 Sod Restoration
This price item is covered by City of Denton Amendments to NCTCOG Specifications Item 202.5 Sodding.
Item 202.6 Hydro-seed Restoration
This price item is covered by City of Denton Amendments to NCTCOG Specifications Item 202.6 Seeding Turf Grass.
Item 203.3 General Site Preparation
This price item is covered by City of Denton Amendments to NCTCOG Specifications Item 203.3 General Site Preparation.
Item 801 Traffic Control, Barricades, Barriers, and Warning Signs
This price item is covered by City of Denton Amendments to NCTCOG Specifications Item 801 Barricades, Detours, and Warning Signs.
Duct Bank:
Item D-01 Duct Bank Conduit
General: This item includes the cost of furnishing and installing the conduit system for this project. The conduit system includes eight (8) six inch Schedule 40 PVC conduits, four (4) two inch Schedule 40 PVC conduits, two (2) four inch Schedule 40 PVC conduits, all required conduit spacers and all other material to properly secure the duct bank to the ground. This item also includes all excavation, backfill, shoring and all other construction activities required to open up the trench and provide complete restoration in accordance with all applicable permits and government regulations.Thermal Concrete shall not be included within this item, see Item D-02 Duct Bank Thermal Concrete.
Payment: Payment for this item shall be at the contract unit price for duct bank conduit based on per linear foot of trench measured along the centerline of trench.
Item D-02 Duct Bank Thermal Concrete
General: This item includes furnishing and installing approved thermal concrete as backfill within the trench for the width and depth as shown on the drawings and specified within the technical specifications. Only pre-approved thermal concrete shall be used.
Payment: Payment for this item shall be at the contract unit price for duct bank thermal concrete based on per linear foot of trench measured along the centerline of trench.
Item D-03 Temporary Construction Facilities
General: This item includes the cost of furnishing, installation, and subsequent removal of all temporary construction plant, utilities, temporary facilities, temporary equipment, materials and supplies required for completion of the installation work, but which will not be incorporated in the completed work. This item includes but is not limited to the following items, construction trailers, fencing, security, sanitation, power and water, temporary parking area and access for adjacent apartment complex.
Payment: Payment for this item shall be at the contract lump sum price for Temporary Construction Facilities.
Item D-04 Dewatering
General: This item includes the cost of furnishing and installation of all necessary dewatering equipment to maintain stable trench conditions and the disposal of the water in accordance with all applicable federal, state and local regulations.
Payment: Payment for this item shall be at the contract lump sum price for Dewatering.
Item D-05 Concrete Parking Lot and Driveway Restoration
General: This item includes the cost of furnishing and installation of lime stabilization, reinforced concrete paving, reinforced concrete driveways, and reinforced concrete curb and gutter for the concrete parking lot and driveways associated with the duct bank improvements. The improvements shall be in accordance with the City of Denton Standard drawings, NCTCOG specifications and City amendments to the NCTCOG Specifications sections 301, 303 and 305. All necessary equipment, labor, and materials shall be included within this item to complete the improvements.
Payment: Payment for this item shall be at the contract unit price per square yard of concrete parking lot and driveway restoration complete and in place. Linear footage of concrete curb and gutter restoration shall be considered subsidiary to the concrete paving restoration.
RFP 6416 – Exhibit 3 TS-1
II.SPECIAL CONTRACT REQUIREMENTS FOR DUCT BANKS
TABLE OF CONTENTS
SECTION22010GENERAL DESCRIPTION AND SCOPE OF THE WORK
Part 1 – General
1.01Scope
1.02Project Description
1.03Definitions
Part 2 – Products
2.01Materials
2.02Miscellaneous Materials and Services
Part 3 – Execution
3.01Work Included Under These Specifications
3.02Lines of Demarcation
3.03Contractor's Services
3.04Contractor's Project Team
3.05Project Management
3.06Coordination
3.07Conformed to Construction Records
3.08Inspections
SECTION22070TEMPORARY CONSTRUCTION FACILITIES
Part 1 – General
1.01Scope
Part 2 – Products
2.01Construction Plant and Temporary Facilities
2.02Construction Utilities
Part 3 – Execution (Not Applicable)
SECTION22080DUCT SYSTEM
Part 1 – General
1.01Scope
Part 2 – Products
2.01PVC Conduit
2.02Inner Duct
2.03Conduit Storage and Transportation
2.04Mule Tape
Part 3 – Execution
3.01Duct Bank
3.02Conduit Installation
3.03Conduit Solvent-Cemented Joints
3.04Conduit Temperature
3.05Conduit Termination
3.06Inspection
SECTION22100CONCRETE
Part 1 – General
1.01Scope
1.02Reference Standards
1.03Quality Assurance
Part 2 – Products
2.01Materials
2.02Concrete Strength and Quality
Part 3 – Execution
3.01Mixing and Placing
3.02Forms
3.03Testing
3.04Submittals
3.05Laboratory Qualifications
SECTION22140EARTHWORK
Part 1 – General
1.01Scope
1.02Definitions
1.03Materials Ownership
Part 2 – Products
2.01Warning Tape
Part 3 – Execution
3.01Preparation
3.02 Tree Protection
3.03Clearing and Grubbing
3.04Topsoil Stripping
3.05Disposal
3.06Sheeting and Shoring
3.07Over Excavation
3.08Site Preparation
3.09Fills and Embankments
3.10Structure and Trench Subgrades
3.11Structure Backfill
3.12Trench Excavation
3.13Trench Widths
3.14Mechanical Excavation
3.15Trench Depth
3.16Trench Backfill
3.17Final Grading
3.18Disposal of Materials
SECTION22175DEWATERING
Part 1 – General
1.01Scope
1.02Related Documents
1.03References
1.04Definitions
Part 2 – Products
2.01Equipment and Materials
Part 3 – Execution
3.01Performance Requirements
3.02Submittals
3.03Environmental Requirements
3.04Groundwater Control
3.05Requirements for Eductor, Well Points, Deep Wells, or Sock Drains
3.06Excavation Drainage
3.07Maintenance and Observation
3.08Monitoring and Recording
3.09Surface Water Control
RFP 6416 – Exhibit 3 TS-1
SECTION 22010
GENERAL DESCRIPTION AND SCOPE OF THE WORK
PART 1 – GENERAL
1.01SCOPE
A.This section provides a general description, scope of work and supplementary requirements for equipment, materials, and services included under these specifications.
B.The work shall include the furnishing and installation of a complete transmission duct bank system for a 138 kV cable system as shown on the plan drawings. This work shall include but is not limited to providing at a minimum: obtaining applicable local, state and federal construction permits, and installing concrete-encased duct bank per project plan drawings. Contractor is to provide miscellaneous materials and services to complete the installations as specified herein and in accordance with the Owner contract documents. The work scope includes all associated work items and materials required to perform the aforementioned major work items in a first class professional manner.
C.These specifications cover the furnishing and installation of the civil infrastructure required for the 138 kV underground transmission line. The furnishing and installation of the 138 kV cable and accessories is a separate contract.
1.02PROJECT DESCRIPTION
A.The work under these specifications shall include furnishing and installing a complete and operable duct bank system per supplied drawings both between the new Hickory Street GIS Substation and the stub out locations as indicated.
1.03DEFINITIONS
A.As used in these Specifications, the following terms have the following meanings:
"Owner," shall mean City of Denton, its successors and/or assigns.
"Manufacturer" or "Contractor" shall mean any individual, firm, company, corporation, etc. providing manufacturing, construction or other services under this contract with City of Denton.
"Engineer" shall mean POWER Engineers, Incorporated or Teague Nall and Perkins, Incorporated.
"Project" shall mean the Hickory Street GIS Project.
"Site(s)" shall mean the lands in or on which work is to be completed, including transmission centerline.
PART 2 – PRODUCTS
2.01MATERIALS
A.Major components of the work include furnishing the following:
1.Open Cut Excavation
- Vegetation clearing
- Trench excavation
- Sheeting/shoring system (as required)
- Dewatering system (as required)
- Erosion and sediment control
- 6-inch schedule 40 PVC conduits for 138 kV power cables
- 4-inch schedule 40 PVC conduits for communication cables
- 2-inch schedule 40 PVC conduits for ground continuity conductors and temperature monitoring cables
- Conduit spacers
- 3000 psi duct bank concrete (thermally approved)
- Red warning tapes
- Backfill (compacted, thermally approved)
- Trench restoration back to original conditions, including pavement restoration
- Applicable local, state and federal construction permits
B.All material to be installed must have written approval by Owner. Materials must be submitted 60 days prior to installation for approval. Any material not accepted by Owner must be re-considered and re-submitted for approval before installation, at Contractor’s expense.
2.02MISCELLANEOUS MATERIALS AND SERVICES
A.Miscellaneous materials and services not otherwise specifically defined shall be furnished by the Contractor in accordance with the following:
1.All nuts, bolts, gaskets, special fasteners, backing rings, tapes, glue and miscellaneous hardware required to assemble and interconnect components and equipment furnished under these specifications
2.Field office and furnishings for Contractor's field supervisor
3.Necessary Storage Facilities
4.Test lab, to verify thermal requirements of native soil, backfill and concrete. A test lab shall also be used for non-thermal property testing of installed properties for soil and concrete.
PART 3 – EXECUTION
3.01WORK INCLUDED UNDER THESE SPECIFICATIONS
A.The work under these specifications shall include installing all materials and services required to perform the Civil Construction complete in accordance with the specifications, the drawings, and other Contract Documents, except as specifically excluded herein under “Owner Furnished Equipment and Materials” and “Work Not Included Under These Specifications.”
- Major components of the work consist of installing the items listed in Part 2.
- Additional components of the work are as follows.
1.Applicable local, state and federal construction permits
2.Thermal testing of select backfill materials, duct bank concrete, and native soils
3.Trench excavation backfill
4.Verify design surveys (Note: City will provide construction survey)
5.Traffic control, as required
6.Safety training, as required by applicable local, state, federal agencies and Owner
7.All project site preparation required for the project
D.After conduit installation, the system will be proof tested via swab and mandrel by the Contractor, with the Owner present, to demonstrate its acceptance for cable installation (by Others). If the tests indicate that the conduit system fails to meet guaranteed performance, the Contractor shall take action to rectify the installation at no additional cost to the Owner.
E.The Owner will provide a Stormwater Pollution Prevention Plan (SWPPP). The Contractor will be in responsible charge of implementation and maintenance of the SWPPP for the duration of the civil installation. This will include performing the weekly inspection (or more frequent if dictated by rainfall) of sedimentation and erosion control features and filling out the SWPPP Inspection Report Form.