Main_Tanks_Phase_2B_Technical_Specifications_.pdf

TECHNICAL SPECIFICATIONS

Main Tanks Phase 2B Transmission Main

ENG24-0106

Prepared for the City of Kingman by:

Sunrise Engineering, LLC

Date:

February 2026

Main Tanks Phase 2B Transmission Main (ENG24-0106) Technical Specifications

2/25/2026 Page ii

TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

PART 100 - GENERAL CONDITIONS

SECTION 104 – SCOPE OF WORK

SECTION 105 – CONTROL OF WORK

SECTION 106 – CONTROL OF MATERIALS

SECTION 107 – LEGAL REGULATIONS AND RESPONSIBILITY TO PUBLIC

SECTION 108 – COMMENCEMENT, PROSECUTION AND PROGRESS

SECTION 109 - MEASUREMENTS AND PAYMENTS

PART 300 - STREETS AND RELATED WORK

PART 400 - RIGHT-OF-WAY AND TRAFFIC CONTROL

PART 600 - WATER, SEWER, STORM DRAIN AND IRRIGATION

PART 1000 – SPECIAL PROVISIONS

PART 100 - GENERAL CONDITIONS

SECTION 104 – SCOPE OF WORK

The following subsections are added to the MAG Standard Specifications.

104.01000 – Location and Project Boundaries:

The project is located along Wilshire Avenue, Anson Smith Road and White Cliffs Road within the

City of Kingman, Arizona.

104.02000 – Scope of Work Overview:

This work is for the installation of the Main Tanks Transmission Main, consisting of approximately

1.13 miles of 24-inch, Class 250 Ductile Iron transmission main and fittings from the existing 24-inch water main at the intersection of Wilshire Avenue and Fairfax Street.

This project will also include air release valve assemblies, butterfly valves, and asphalt removal/replacement/repair. Refer to the Project’s plans for further details.

SECTION 105 – CONTROL OF WORK

105.01000 – Additional Reference Standards:

The following reference standards are added to the General Terms and Conditions and are incorporated by reference.

A. U.S. Department of Transportation, Manual on Uniform Traffic Control Devices (MUTCD), latest edition.

B. Latest revisions of ASTM, AWWA, ANSI or Federal specifications, standards and details, as applicable.

C. In the event of a conflict between the Construction Drawings and the Contract language, the

Contract language shall prevail.

D. In the event of a conflict between (i) the ASTM, AWWA, ANSI or Federal specifications, standards and details and (ii) the MAG Uniform Standard Specifications and Details for Public

Works Construction and the City of Kingman Supplement to MAG Uniform Standard

Specifications and Details for Public Works Construction, the MAG Uniform Standard

Specifications and Details for Public Works Construction and City of Kingman Supplement to MAG Uniform Standard Specifications and Details for Public Works construction shall prevail.

E. In the event of a conflict between the AWWA, ANSI or Federal specifications, standards and details and the Contract, the Contract shall prevail.

F. In the event of a conflict between the MAG Uniform Standard Specifications and Details for

Public Works Construction and the City of Kingman Supplement to MAG Uniform Standard

Specifications and Details for Public Works Construction, the City of Kingman Supplement to MAG Uniform Standard Specifications and Details for Public Works Construction shall prevail.

105.02000 – Additional Reference Information and Materials:

The following supplemental information is attached or is a part of the plans:

• Geotechnical Investigation Report prepared by Vann Engineering, Inc, dated 05/07/2020

105.20010 – Shop Drawings:

Prior to the Pre-Construction meeting, the Contractor shall submit, for review, a proposed schedule of shop drawings and product data submittals. This schedule and the subsequent submittals shall be prepared and submitted in conformance with the requirements of MAG Specifications Section 105.2 and as specified in the City MAG Supplement.

Item 105.30010– As-Built Documentation

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for providing complete and accurate as-built record document plans to the City. As-built plans shall reflect all in-place field dimensions, horizontal locations and vertical elevations for all constructed or installed improvements. All changes, additions and deletions shall be depicted graphically and represented numerically. All dimensions and elevations on the plan sheets must be verified.

The Contractor shall be required to keep a clean and current set of as-built plans on-site during the

Project’s construction duration. The as-built plans must be kept up to date for each phase of construction throughout the Project’s construction duration. These as-built plans shall be subject to review each month by the City’s Engineering Inspector to verify compliance with this specification and will be part of the approval process for each of the Contractor’s monthly progress payments.

The Contractor shall be responsible for preparing and providing to the City all final as-built record documents for the Project using the most recent City approved plan sheets. An Arizona registered civil engineer or Arizona registered land surveyor shall seal the final as-built record documents. The final as-built record documents shall conform to the requirements of MAG Specifications Sections

105.8 and 105.15; and as specified in the City MAG Supplement. Changes to the original Plan

Drawings shall be made by striking through the original information with a single line. The as-built changes shall be noted with the letters ‘AB’ after the correction. The as-built changes shall be shown in both plan and profile as appropriate. Changes in horizontal alignment shall be noted on the plan and tied down by stationing and offsets from the monument line. Any portions of the Work not constructed shall be clearly labeled “Deleted” or “not built”.

At project completion, the Contractor shall submit a final, clean, full-size set of redline record plan drawings showing the entire project with the as-built information as described above. This final set shall be prepared, reviewed and sealed by the Contractor’s surveyor. The City shall review the final paper set for completeness and acceptability. If rejected, the Contractor shall correct or complete the as-built drawings and resubmit for an additional review. Once the bond set of redlines as-built plans are approved and accepted the as-built plans shall be submitted in duplicate digital files (DVD), in both “TIF” and “PDF” formats.

Measurement for the As-built Record Document Plans will be prorated (overall project percent completion) each month over the Project’s duration. Payment: There will be no separate payment for the preparation and maintenance of as-builts. As-builts will be considered incidental to the project and other related items.

105.60010 – Cooperation with Utilities:

The following utility companies may have facilities in the area of this project. It shall be the

Contractor’s responsibility to determine the exact location of the utilities prior to any construction operations and to notify the below mentioned utility companies a minimum of five (5) working days prior to commencing any work on the project. Use caution and always follow all local Blue Stake laws.

City of Kingman Public Works

Frontier Communications

Optimum (Cable)

Unisource Energy Services (Electric)

Unisource Energy Services (Gas)

Allo (Fiber)

WeCom (Fiber)

(928) 757-7467

(928) 716-1253

(702) 354-1084

(928) 681-8928

(928) 715-7611

(702) 480-6669

(928) 889-6214

Unisource Energy Services has overhead electrical facilities located throughout the project area.

These facilities shall be protected in place during the construction. To protect in place, excavation around all Unisource Energy Services poles must be limited to one foot or less below grade. In instances where Unisource Energy Services overhead lines transition to underground lines at the base of pole, the Contractor will need to coordinate with Unisource Energy Services to provide an inspector on-site while the demolition/excavation is performed.

There are areas throughout the project where an overhead system crosses. Caution and proper clearances should be taken into consideration when doing work directly below these facilities. Pole bracing is required when digging is within four (4) feet of existing poles and depth of excavation is greater than two (2) feet. It is the Contractor’s responsibility to maintain minimum OSHA clearances from Unisource Energy Services overhead & underground facilities.

There are several areas throughout the project where the proposed water lines cross existing underground systems. Caution and proper clearances should be taken into consideration when doing work in and around these facilities. Allow a minimum of 45-days to resolve undetermined conflicts that arise as a result of the construction of this project. When crossing Frontier Communications, or

NPG Cable, LLC (Suddenlink Comm.) facilities the Contractor shall pothole to determine depth and maintain a minimum of 12 inches of vertical and horizontal separation from the proposed facility.

Support and protect all facilities during construction. Utility companies do not maintain installation records of customer drops that may conflict with this project.

There are underground gas lines running throughout the Project length. During water installation, care will need to be taken to maintain appropriate clearances from the gas line. Unisource Energy does not provide depth information for natural gas facilities. It is recommended that the Contractor evaluate each gas pipeline location by potholing to determine the exact elevation of the gas pipe. Prior to excavating, the Contractor must call Arizona 811 Blue Stake at (800) 782-5348 so existing gas facilities may be accurately located. The Contractor should hand dig carefully at these marked locations until the gas pipe has been found and exposed. Use care to avoid damaging or breaking a small electrical tracer wire (which is used for locating purposes) that may be buried with the pipe.

Any underground facility crossing natural gas must have at least 12 inches face-to-face clearance at the point of crossing.

Abandoned steel gas lines may also be located within the project limits that are potentially coated or wrapped with unidentified materials. Unisource Energy treats all of its steel gas pipe with unidentified coating/wrapping materials as potentially containing asbestos. Accordingly, whenever such pipe is in direct conflict and requires removal, it must only be done so by one of the utility provider’s NESHAP certified contractors. The costs associated with such removal will be the responsibility of Unisource

Energy. Contact the utility provider in advance to coordinate removal.

Once mechanical trenching is in progress, do not dig within two (2) feet of a gas pipe. This trenching shall be done by hand in order to prevent any damage to the gas pipe. In the event the Contractor should “hook” or otherwise strain a gas pipe while excavating, a call shall be placed to Unisource

Energy at (877) 837-4968.

Even though there may not be any apparent damage, the strain may have damaged the wrap or a portion of the buried pipe or fittings at other locations causing a leak in the surrounding area. Also, if a steel facility is exposed and the pipe coating is found to be in need of repair, contact the utility provider so a crew can be dispatched to rewrap the pipe.

When the excavations are complete, all exposed gas pipes shall be protected. If the trench is more than three (3) feet wide, the pipe must be supported in a manner where the supporting material does not damage the pipe or its protective wrapping.

Unisource Energy requires six (6) inches of bedding, one inch on the side and six (6) inches of shading with sand or material free of rocks and able to pass through a 3/8 inch screen. This will provide a firm support under the facility and prevent damage to the pipe or pipe coating from the backfilling operation. Do no drop backfill directly over the gas pipe. During the compaction process, use extra care when directly over the gas pipe in order to avoid any damage.

In addition, the Unisource Energy system has Regulator Stations, pipeline valves, locating stations, test points and underground vaults each with protective valve box lids and vault manhole covers.

These are designed to be flush with the existing ground. Under U.S. Dept. of Transportation’s Pipeline

Safety Regulations and Unisource Energy operating procedures, these facilities are required to be accessible at all times.

Unisource Energy will paint yellow all protective valve box lids and vault manhole covers. It will be the responsibility of the Contractor to make sure these are protected during construction. The

Contractor will be responsible for adjustments to all valve box lids and vault manhole covers due to grading and paving per MAG Details 391.1 and 391.2. For emergencies, call Unisource Energy (877)

837-4968.

Item 105.80010 – Construction Staking, Surveying and Layout

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for providing construction survey, staking and layout for the Project. This item shall comply with MAG

Specification 105.8 and as modified by the City of Kingman Supplements to MAG standard specifications, Section 400.

The first two paragraphs of Section 105.8 shall be deleted in their entirety and replaced with the following:

“The Contractor shall provide a Registered Land Surveyor (RLS) who will set construction stakes establishing lines and grades for road work, structures and centerlines for utilities and necessary appurtenances as he may deem necessary. The Engineer will furnish the Contractor with all necessary information relating to the lines and grades.

The Contractor provided RLS shall be responsible for resetting/replacing any survey monuments as required by the plans and/or contract documents.”

Measurement for survey, staking and layout will be prorated (overall Project percent completion) each month over the Project’s duration. Payment: There will be no separate payment for the construction staking. Construction staking will be considered incidental to the project and other related items.

SECTION 106 – CONTROL OF MATERIALS

106.20010 – Samples and Tests of Materials:

The Contractor shall provide quality control material testing and frequency as stated by MAG

Specifications and the City of Kingman Supplements to MAG Standard Specifications Section 106.

Compaction testing procedures for the pipe zone, final backfill and aggregate base course will be in accordance with MAG Section 601.4.4 and the City of Kingman Supplements to MAG Standard

Specifications Section 601 except aggregate base shall be compacted to 100% when used for backfill.

The sampling and testing point will be in-place at the minimum frequencies per the City of Kingman

Supplements to MAG Standard Specifications Section 601.4.4.

Compaction testing procedures for the pipe zone, final backfill and aggregate base course within

County right-of-way will be in accordance with Mohave County Right-of-Way Use Permit and

Mohave County Standard Detail 200-1.

Contractor will be required to conduct compaction tests at a minimum of 500-foot intervals at two (2) foot vertical lifts or at the above stated frequencies, whichever is more stringent. Water consolidation shall NOT be used for compaction. Contractor shall utilize mechanical compaction for all backfill and lifts shall not exceed a two (2) foot lift. Aggregate Base shall not exceed 6-inches per lift.

The Contractor shall obtain an independent laboratory or testing company and pay all costs required by the Contract Documents. A copy of all test results shall be furnished to the City’s Project Manager in a Weekly Summary Report submitted at the weekly construction progress meeting (time and date to be set upon contract award) for tests performed from the preceding week. Before final completion, the Contractor shall submit a final testing report containing all testing results which certifies the work complies with the Contract Documents. This testing report shall be sealed by a Professional Civil

Engineer, registered in the state of Arizona who was responsible for overseeing the testing and sampling for said company. Payment for material testing shall be considered incidental to the cost of this project.

SECTION 107 – LEGAL REGULATIONS AND RESPONSIBILITY TO PUBLIC

107.10010 – Arizona Pollutant Discharge Elimination System (AZPDES)(Allowance):

This project is subject to the AZPDES Construction General Permit (CGP) requirements under the

Arizona Stormwater Construction General Permit (CGP) through Arizona Department Environmental

Quality (ADEQ). All subcontractors shall comply with all AZPDES ADEQ requirements under the supervision of the General Contractor and shall submit a completed, signed subcontractor certification form, thereby designating themselves as co-permittees. The Contractor will be expected to develop the Storm Water Pollution Prevention Plans (SWPPP) following the most recent ADEQ Approved

SWPPP Template (found on the ADEQ website). Completed SWPPPs must be submitted to the City’s project manager for review before a construction permit will be issued by the City. All sections of the most recent ADEQ Approved SWPPP Template must be complete in order for the City’s project manager to initiate a review of the submitted SWPPP.

Subsequent to approval by the City’s project manager, the Contractor will be expected to update/revise the approved SWPPP as necessary throughout the construction of the Project in order to ensure compliance with ADEQ, AZPDES, and CGP requirements. Revisions to the SWPPP or any other additional items, shall be subject to approval by the City prior to implementation. The SWPPP document shall be kept at the project site at all times. The final SWPPP document shall be retained by the Contractor for three years following project completion and final acceptance by the City.

The Contractor will be responsible to make submittals to the appropriate agencies. This department requires all submittals, fees, and processes in addition to the standard NPDES requirements.

The Contractor shall submit a completed, signed Notice of Intent (NOI) form (including the signed subcontractor certification forms) to the ADEQ, Water Permits Section/Storm Water NOI (5415B-

3), 1110 W. Washington Street, Phoenix, Arizona 85007; or fax to (602) 771-4674, or online at

ADEQ’s Smart NOI Web site at: https://az.gov/app/smartnoi/. The NOI shall be posted at the construction site at all times.

Failure by the Contractor (or any applicable subcontractors) to submit the NOI forms and certifications to ADEQ, and/or the SWPPP to the City’s project manager for review, by the start of construction, activities will lead to delays in meeting EPA requirements, which will result in delay of the start of construction. The Contractor will not be entitled to any additional compensation for costs resulting from such delay of the construction start date and/or any construction activities. No construction activities shall begin until all applicable storm water pollution control devices are in place. Any additional work or costs caused by the Contractor's (or subcontractor's) failure to properly implement the SWPPP shall not be considered for compensation. The Contractor shall keep a copy of the latest STORM WATER GENERAL PERMIT FOR CONSTRUCTION ACTIVITIES as printed in the Federal Register at the job site at all times. The Contractor shall keep a copy of the

STORM WATER BASELINE CONSTRUCTION GENERAL PERMIT COVERAGE NOTICE

received from ADEQ (after submittal of the NOI) at the job site at all times.

All SWPPP reports required under this contract shall be available to the public in accordance with the requirements of Section 308(b) of the Clean Water Act. The Contractor shall make plans available to the public upon requests. No conditions of the Arizona General Permit or the SWPPP shall release the Contractor from any responsibilities or requirements under other environmental statutes or regulations. Asphalt plant and concrete plants (including mobile plants) require separate AZPDES industrial permits.

Upon completion and acceptance of the work performed by a subcontractor co-permittee, either the

Contractor or other subcontractors shall absolve such subcontractor of any involvement in, or responsibility for, any subsequent AZPDES violations on the project. After project completion, acceptance, and de-mobilization, the Contractor shall submit a completed, signed Notice of

Termination (NOT) form to the ADEQ Water Permits Section/Storm Water NOT (5415B-3), 1110

W. Washington Street, Phoenix, Arizona 85007 or fax to (602) 771-4674, or online at ADEQ’s Smart

NOI Web site at: https://az.gov/app/smartnoi/.

At a minimum, the Contractor shall perform inspections in accordance with the scope and schedule specified in the most recent CGP Inspection and Corrective Action Report Form found on the ADEQ website. The Contractor is also encouraged to inspect all best management practices following all rainfalls, as it is the Contractor's responsibility to ensure the proper operation of each best management practice at all times. The Contractor shall maintain a record of each inspection. No other separate measurements or payments will be made relative to SWPPP items.

Measurement for AZPDES (NPDES) SWPPP will be prorated (overall project percent completion) each month over the project’s duration. Payment shall be made at the Lump Sum price and shall be considered full compensation for this work item.

Item 107.15000 – Community Relations (Allowance)

The work under this item shall consist of furnishing all necessary materials, equipment, labor, services and incidentals for providing public information and notification. The cost for providing a 24-hour project hot-line number service shall be reimbursed through this work item. The cost for furnishing, installing and maintaining two (2) project information signs, in accordance with the contract documents, shall be reimbursed through this work item. The Contractor shall also be responsible for removing the project information signs once the Project has reached final completion.

The costs for use of Video Message Boards (VMBs) will also be included in this item.

Measurement and Payment shall be based on City-approved time and material invoices for an amount not to exceed fifteen thousand dollars ($15,000.00) and shall be considered full compensation for this work item.

107.20010 – Permits

The City of Kingman Engineering Right-of-Way Permit fee will be waived for this project. All other required permits (through the City, County or other jurisdiction) shall be the Contractor’s responsibility to obtain and pay for. The City will provide any water relating to construction;

however, the contractor is required to pay a deposit and call in monthly reads to the City’s water department. The cost for all permits shall be considered incidental and be included in the Contractor’s pricing.

SECTION 108 – COMMENCEMENT, PROSECUTION AND PROGRESS

108.50010 – Limitation of Operations and Sequencing of Construction:

The Contractor shall be aware of and coordinate this Project’s Work with any other ongoing construction and/or traffic control in the immediate vicinity of the Project area.

Night and weekend work is NOT typically allowed for mainline utility construction unless specifically pre-approved by the City in writing. Night work may be considered for water and sewer connections when low flow conditions are required to better facilitate connections into the existing water or sewer systems. The Contractor shall assume no night or weekend work for this Project except that large diameter boring operations will be allowed outside of these restrictions.

SECTION 109 - MEASUREMENTS AND PAYMENTS

109.00010 – General

Item Numbers listed herein correspond to the MAG Specifications sections.

Measurement for each item shall be completed in the units installed or percent complete as indicated on the plans. Measurement shall be for all work that is satisfactorily completed in place, with no allowance for waste, and that which is verified by field measurements as applicable. The Contractor is responsible for coordinating quantity measurements with the City Engineering Inspector or designated representative. Quantity measurements will not be accepted for payment without City approval.

In general, payments to the Contractor shall be in accordance with the Contract Documents. Specific item payment guidelines shall be in accordance with the MAG Specifications as applicable unless as revised or more particularly described in these Technical Specifications. Payment will be made at the

Unit Price or Lump Sum price and shall constitute payment in full for furnishing all materials, equipment, appurtenances, labor, plant and tools necessary to provide a complete Project in a workmanlike and satisfactory manner as shown by the Plan Drawings and in the Contract Documents described herein.

Item 109.10010 – Mobilization/Demobilization

The work under this item shall consist of furnishing all materials, equipment, and labor necessary to provide the Contractor compensation for trip mobilization/demobilization of the Contractor’s personnel equipment, supplies and incidentals, establishment of offices, buildings and other facilities, required for the performance of the work on the Project, including preparatory work and operations prior to the commencement of the work on the Project site.

Measurement and Payment for mobilization and demobilization shall be done in two equal parts of the Contractor’s Item Lump Sum price. The first half payment shall be included in the Contractor’s initial invoice and the second half payment shall be made after the Project has reached Substantial

Completion as declared by the City and shall be considered full compensation for this work item.

PART 300 - STREETS AND RELATED WORK

Item 321.001 – Thickened Edge (Type A) per MAG Standard Detail 201

(This Specification corresponds to Hardscape Note 21 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for the installation of asphalt thickened edge as shown on the project plan documents. All thickened edges shall be Type A and all work shall be constructed in accordance with MAG Standard Specifications

Section 321.8.8 and MAG Standard Detail 201.

Measurement for installation of asphalt thickened edge will be per each linear foot. Payment shall be made at the unit price and shall be considered full compensation for this work item.

Item 330.001 – Chip Seal per MAG Spec 330 and per Mohave County Requirements

(This Specification corresponds to Hardscape Note 20 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for the application of chip seal on County roadways shown on the project plan documents. All chip seal materials including (but not limited to) bituminous grade and aggregate shall be in accordance with

MAG Standard Specification 330 and in accordance with Mohave County requirements. It shall be the Contractor’s requirement to coordinate with Mohave County on specific material and application requirements for the chip seal. All work shall be constructed in accordance with MAG Standard

Specifications Section 330.

Measurement for installation of chip seal will be per certified weights, coordinated with the Engineer before the product is applied. Payment shall be made at the unit price per ton and shall be considered full compensation for this work item.

Item 336.001 – Asphalt per City of Kingman Standard Detail 200-1

(This Specification corresponds to Hardscape Note 16 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for the preparation, placement and compaction of permanent asphalt concrete pavement replacement, in accordance with the City of Kingman Supplements to MAG Standard Specifications Sections

336.2.4.1 and 336.3, City of Kingman Standard Detail 200-1, MAG Specifications Sections 321, 336 and 710; and per the project plan documents. All lane striping and temporary and permanent striping shall be included in the cost of the pavement replacement. All ABC or CLSM backfill shall be included in the separate designated pipe utility items. The asphalt thickness shall match the pavement section details on the construction plans if provided or per the City’s Standard Detail

200-1 or match existing asphalt depths, whichever is greater. The asphalt concrete pavement shall be placed in two lifts if the asphalt depth is 4-inch or greater. The Contractor shall submit a design mix in accordance with MAG Spec Sections 321.5 and 710.3 and the City’s MAG Specification

Supplement. Paving shall not commence until the City or authorized representative has accepted the underlying backfill base material and grade.

Measurement shall be per each Square Yard installed based on the field measured trench length and the MAG Trench Pay Width per MAG Specifications Section 336.4 using Table 601-1; except that all pay widths shall be computed per Section 336.4; unless otherwise specified by a specific trench cross-section. Payment shall be made at the unit price and shall be considered full compensation for this work item. No payment will be made for additional pavement replacement as a result of a wider trench excavation.

Traffic Paint & Lane Striping Restoration

This item consists of providing all materials, equipment, and labor for the preparation and application of all permanent traffic paint and pre-formed pavement markings on new and/or existing pavement surfaces. Application of traffic paint and pre-formed pavement markings shall conform to replace previous or restore existing pavement markings as a result of the utility project or as otherwise directed by the City Engineer or authorized representative. Application of traffic paint and pre-formed pavement markings shall be in accordance with ADOT Specifications and Details. Longitudinal lane striping, stop bars, cross-walks, and other lane delineation markings shall be paint. Arrow symbols and other various legends shall be pre-formed tape, Type I, in accordance with Arizona Department of Transportation (ADOT) Standard Specifications for Road and Bridge Construction, Section 705;

“Pre-formed Plastic Pavement Markings”.

The Contractor shall be required to survey and layout all the pavement markings including lane striping start and stops, spacing, symbol/legend locations, cross-walks and stop bars as directed by the City. All temporary markings, layout markings and any associated temporary signage shall be provided by the Contractor at no additional cost to the City. After layout, the Contractor shall request a City field inspection to verify and approve the pavement markings layout. The City requires a minimum of two (2) business days (Monday - Friday; daytime only) to schedule striping field inspections. Upon approval, the Contractor shall proceed with the application of the permanent traffic paint pavement markings. For asphalt pavement overlays and other asphalt pavement surface treatments on existing streets, the Contractor shall be responsible for measuring, documenting, setting off-set references and/or whatever necessary to re-establish location and alignment of any existing striping and pavement markings.

Traffic control set-up and maintenance shall be the responsibility of the Contractor. Unless otherwise directed, streets with new pavement or new pavement re-surface treatments shall not be open for public traffic use until all permanent pavement marking is complete, or until temporary striping and/or temporary traffic control (barricades) have been provided in accordance with an approved plan.

Item 350.001 – Sawcut & Remove Existing Asphalt

(This Specification corresponds to Removal Note 1 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor necessary for removing existing asphalt concrete pavement as needed for trench excavation and other underground pipeline utility construction. Pavement removal shall be in accordance with the City of Kingman

Supplements to MAG standard specifications Section 336.2.2 and MAG Standard Specification

Sections 336 and 350. The Contractor is responsible for protecting all adjacent pavement and concrete. The pavement removal operation shall not damage any underground utilities that are to remain in place. The Contractor shall include all removal related costs in this item work including saw cut, milling, loading, hauling, off-site disposal and clean-up. All final locations and dimensions shall require approval from the City Engineering Inspector before any removals can start.

Measurement shall be per each Square Yard of area removed based on the field measured trench length and the MAG Trench Pay Width per MAG Specifications Section 336.4 using Table 601-1.

Payment shall be made at the unit price and shall be considered full compensation for this work item.

PART 400 - RIGHT-OF-WAY AND TRAFFIC CONTROL

Item 401.001 – Traffic Control (Allowance)

The Work performed under this item shall consist of providing all required traffic control barricades, devices, signage, temporary paint pavement markings (striping), flagmen set-ups, pilot cars and other related maintenance as necessary, in accordance with MAG Standard Specification Section 401, the latest edition of MUTCD and the City of Kingman Supplements to MAG standard specifications as applicable. Traffic Control shall be further defined by site specific pre-approved traffic control plans

(TCPs) and such costs consisting of preparing and submitting ATSSA certified traffic control plans for approval shall be included. Plans must be submitted to the City of Kingman for review and approval a minimum of three (3) Business Days (Monday to Friday) prior to the start of the related work. The plans must be complete, detailed and meet MAG and MUTCD requirements.

Road closures for convenience of the Contractor shall not be allowed. During construction activities, a minimum of two thru lanes, one each direction, shall remain open at all times. Provisions shall be made to allow for left turns including dedicated turn bays at all signalized intersections and other major collector cross-street intersections, unless otherwise specifically pre-approved by the City. Any activities that will affect peak time traffic shall be pre-approved for times, days, and method by the

City prior to implementation.

It shall be the responsibility of the Contractor to provide, erect, maintain, remove and/or relocate all temporary and existing traffic control devices and signal indications necessary to properly mark and control the construction area(s) for the safe and efficient movement of all roadway users including pedestrians. The Contractor shall inspect and maintain all installed temporary traffic control devices at least once during a twenty-four (24) hour period. More frequent intervals of inspection and maintenance shall be made during periods of high winds or other detrimental conditions including a continuing problem maintaining the signs and devices. All temporary traffic control devices shall be ballasted with sandbags.

The work shall not start until the traffic control plans have been approved by the City. Payment for uniformed off-duty police officers shall be paid under a separate item as an allowance.

Measurement and Payment shall be based on City-approved time and material invoices for an amount not to exceed one hundred and twenty-five thousand dollars ($125,000.00) and shall be considered full compensation for this work item. The Contractor is responsible for all costs incurred in replacing lost or damaged traffic control devices and traffic control warning signs.

PART 600 - WATER, SEWER, STORM DRAIN AND IRRIGATION

Item 610.001 – 24-inch DIP CL 250 Water Line. Trench and Backfill per City of Kingman

Standard Detail 392. Polywrap per City of Kingman Standard Spec 750.2, (This Specification corresponds to Water Note 30 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor for the installation of ductile iron pipe (DIP) water transmission main, Class 250 as shown on the plans in accordance with MAG Standard Specification Sections 601, 610 and City of Kingman Supplements to MAG standard specifications 601, 610, 611, 750.2 and 750.3 as applicable. Work shall include all excavation, shoring, bracing, installation, fittings, (flanged fittings, shall use 316 stainless steel bolts), appurtenances, specials, adapters, pipe foundation and bedding, backfill, compaction, marking, flushing, testing and disinfection.

For pipe sections requiring joint restraint, allowable joint restraints include fitting systems such as

Mega-Lug or other City approved equals shall be used. No locking gaskets will be allowed unless specifically approved by the City. When connecting new pipe to existing pipe, Contractor shall install concrete thrust blocks or anchor block assemblies per MAG Standard Details 380 and 381.

Pipe Zone shall be installed per City of Kingman Standard Detail 392. Unless otherwise specified, trench backfill shall be per the City of Kingman Standard Detail 200-1.

Backfill within Mohave County ROW shall be in accordance with Mohave County Right-of-Way

Use Permit and Mohave County Standard Detail 200-1.

All water lines shall be polyethylene wrapped per COK Specification 750.2. Costs for polyethylene protection shall be incidental to this work item. Double (2) polyethylene protection where specified on the plans is also incidental to this item.

Contractor shall pothole to verify all utility conflicts and utility crossings which are known, marked

(Blue Staked) or shown on the project plan documents to ensure and provide for the required clearances. Failure on the Contractor’s behalf to adequately locate and verify the utility conflicts/crossings well in advance of any main line or lateral line trench excavation shall preclude any claims or extra costs by the Contractor for delays or stand-by time. All adjacent utilities and perpendicular or transverse utility crossings shall be protected in place.

All pipe shall be flushed, pressure tested and disinfected per MAG Standard Detail 611.

Measurement will be by the horizontal linear feet of installed pipe through all fittings and valves.

Payment shall be made at the unit price and shall be considered full compensation for furnishing and installing the pipe and fittings, specials, adapters, appurtenances, pipe foundation and bedding, backfill, compaction, marking, flushing, testing and disinfection complete in place as called for in the plans. Asphalt pavement removal and replacement shall be paid by separate items.

Item 610.002 – 24-inch DIP Fittings, Type per Plan

(This Specification corresponds to Water Note 32 in the plans)

The work under these items shall consist of furnishing all materials, equipment, and labor for the installation of 24-inch DIP, Class 250 water line fittings (type per plan). This includes but is not limited to all bends, tees, crosses, couplers and caps. All fittings as shown on the plans shall be accordance with MAG Standard Specification Sections 601, 610 and the City of Kingman MAG

Supplement as applicable. All flanged fittings shall use 316 stainless steel bolts.

Measurement will be made at the unit price per each fitting. Payment shall be considered incidental and included in the cost of the water line pipe in full for the item complete in place.

Item 630.001 – 24-inch Butterfly Valve with Side Mounted Vertical 2-inch Operating Nut, Valve

Box & Cover per COK Standard Detail 391-1. Valve Blocking per COK Standard Detail 301

Valve Extensions are Required for Valves Deeper than 5.0’ Per COK Standard Detail 391-2

(This Specification corresponds to Water Note 31 in the plans)

The work under this item shall consist of furnishing all materials, equipment, and labor for installing butterfly valves, (Flanged fittings shall use 316 stainless steel bolts) complete with side mounted vertical 2-inch operating nut, valve box, cover and valve blocking in accordance with MAG

Specification Section 610.7, 630.5 and City of Kingman Detail 391-1 and 301 as shown on the plans.

For valves deeper than 5 feet below grade, an extension assembly per City of Kingman Standard

Detail 391-2 shall be required at no additional cost.

Measurement for each butterfly valve and valve box and cover installed. Payment shall be made at the unit price and shall be considered full compensation for this work item.

Item 630.002 – Air/Vacuum Relief Valve Assembly & Vault Per Detail A, Sheet 20 in the Plans.

Size of ARV and Length of Pipe Per Plan

(This Specification corresponds to Water Note 33 in the plans) installation of the Air/Vacuum Relief Valve Assemblies, including the Crispin Universal

Combination Air/Vacuum Release Valve, Model #UL42 (or approved equal), precast manhole vaults, lids, rings and collars, piping, fittings, tapping sleeves, gate valves, valve boxes, thrust blocks, gravel, backfill and all other appurtenances as indicated in Detail A on Sheet 20 in the Plans. All combination air/vacuum relief valves as shown on the plans shall be accordance with MAG Standard

Specifications 601, 610, 630, 750 and the City of Kingman Supplements to the MAG Specifications.

All seat materials for the combination air/vacuum release valves shall have a rubber durometer of 90 or greater.

All piping, fittings, valves, tapping sleeves and all other waterline appurtenances shall be per MAG

Standard Specifications 601, 610, 611 and 630. All piping, fittings, valves, tapping sleeves and other appurtenances shall be fully restrained. The vault shall be a HS20 Traffic rated Jensen Precast Vault

(or approved equal) with a modified base to be open ended. The base shall be filled with a clean 1/2” gravel and the vault shall be in accordance with MAG Standard Specifications 725, 726 and 727. A

24-inch x 12-inch Class B concrete footing with # 4 rebar shall be installed beneath the vault walls.

Vault lids shall be a HS20 traffic rated Jensen Precast Steel Diamond Plated “Bolt Down” lid or approved equal. In no instance shall an ARV vault be placed within the limits of any sidewalk.

Measurement will be made at the unit price per each Air/Vacuum Release Valve Assembly and Vault as shown in Detail A on Sheet 20 in the Plans, including but not limited to all tapping sleeves, pipe, fittings, valves, air/vacuum release valves, vaults, manhole lids and backfill. Payment shall be compensation in full for the item complete in place.

Item 630.003 – Curb-stop with Flushing per City of Kingman Standard Detail 390

(This Specification corresponds to Water Note 42 in the plans) installation of curb-stops, flushing valves, frames and covers. All curb-stops, flushing valves, frames and covers as shown on the plans shall be accordance with MAG Standard Specifications 601, 610, 630, 750, City of Kingman Standard Detail 390 and the City of Kingman Supplements to the MAG

Specifications.

Measurement will be made at the unit price per each. Payment shall be compensation in full for the item complete in place.

PART 1000 – SPECIAL PROVISIONS

Item 1000.001 – Hard Dig Excavation

(This Specification applies to all trench and excavation operations where hard dig conditions are encountered)

The work under this item shall consist of furnishing all materials, equipment, labor, supervision, and incidentals necessary for excavation of verified hard dig materials encountered during trenching and other excavation operations, complete in place.

Hard dig shall be defined as subsurface material that cannot be removed by a track-mounted hydraulic excavator (minimum 30,000 pounds operating weight) equipped with a standard trenching bucket, operating under normal construction methods, without the use of specialized rock excavation equipment.

Hard dig shall include:

• Rock requiring use of a single-shank ripper;

• Cemented alluvium (caliche) or indurated material not removable by conventional bucket excavation;

• Rock, boulders, or cemented materials requiring hydraulic breaker (hoe-ram), rock hammer, or similar mechanical fracturing methods;

• Cobbles or boulders greater than twelve (12) inches in diameter that cannot be removed by conventional trench excavation equipment.

Hard dig shall not include:

• Loose rock, sand, gravel, or decomposed granite removable with a toothed bucket;

• Isolated rocks less than twelve (12) inches in diameter;

• Material loosened by prior construction activities;

• Over-excavation resulting from Contractor means and methods.

The Contractor shall notify the Engineer immediately upon encountering suspected hard dig conditions. No additional compensation will be allowed for hard dig removed prior to verification by the Engineer.

Measurement will be made by the cubic yard in place, based on trench width and depth as shown on the plans and the verified linear footage of hard dig encountered. No allowance shall be made for swell or shrinkage. Payment shall be made at the unit price per cubic yard for hard dig Excavation.

Payment shall constitute full compensation for all additional costs associated with hard dig conditions, complete in place.

END OF TECHNICAL SPECIFICATIONS