25421_32nd_Ave_100%_Specs.pdf

Project No.: ARPA M361-011 April 29, 2025

PCN: 25421

Colorado Department of Transportation

Special Provisions 32nd Avenue Bike Lanes

The 2023 Standard Specifications for Road and Bridge Construction controls construction of this project. The following special provisions supplement or modify the Standard Specifications and take precedence over the Standard Specifications and plans.

Project Special Provisions

Name Date Page

Index Pages (April 29, 2025) 1-3

Notice to Bidders (April 29, 2025) 4-5

Disadvantaged Business Enterprise (DBE) Contract Goal (April 29, 2025) 6

Commencement and Completion of Work (Working Day) (April 29, 2025) 7

On the Job Training Contract Goal (April 29, 2025) 8

Revision of Section 101 Definitions and Terms (April 29, 2025) 9-11

Revision Of Section 102 Bidding Requirements and Conditions (April 29, 2025) 12-14

Revision Of Section 103 Award and Execution of Contract (April 29, 2025) 15

Revision of Section 106 Conformity to the Contract Hot Mix Asphalt (April 29, 2025) 16

Revision Of Section 202 Removal of Asphalt Mat (Planing) (April 29, 2025) 17-19

Revision Of Section 202 Clean Valve Box (April 29, 2025) 20

Revision Of Section 210 Valve Box and Manhole Adjustments (April 29, 2025) 21-22

Revision Of Section 240 Protection of Migratory Birds (April 29, 2025) 23-25

Revision of Section 250 Environmental, Health and Safety Management

(April 29, 2025) 26-27

Revision Of Section 403 Hot Mix Asphalt (April 29, 2025) 28-31

Revision Of Section 626 Public Information Management (Tier IV) (April 29, 2025) 32-38

Revision of Sections 627 and 713 Preformed Thermoplastic Pavement Marking

(April 29, 2025) 39-43

Revision Of Section 630 Portable Message Sign Panel (April 29, 2025) 44-45

Revision Of Section 630 Pedestrian Barricade (ADA) (April 29, 2025) 46-47

Revision Of Section 630 Construction Zone Traffic Control (April 29, 2025) 48

Revision of Section 630 Mobile Attenuator (April 29, 2025) 49-50

Revision Of Section 713 Traffic Control Materials (April 29, 2025) 51

Force Account Items (April 29, 2025) 52-53

Traffic Control Plan – General (April 29, 2025) 54-55

Utilities (April 29, 2025) 56-61

Colorado Department of Transportation

Special Provisions 32nd Avenue Bike Lanes

Standard Special Provisions Name No. of Pages

Revision of Sections 101 - Definitions and Section 106 - Control of Materials

Revision of Sections 101 and 106 - Buy America and Build America, Buy America Requirements – No Federal-Aid or Projects with Less than $500,000 in Federal-Aid Highway Funding

Revision of Section 105 – Asphalt Mat Density 1

Revision of Section 105 - Control of Work 1

Revision of Section 105 - Dispute Review Board and Claims for Unresolved Disputes

Revision of Section 105 - E-Signature

Date

(January 8, 2024)

(October 16, 2024)

(December 26, 2024)

(October 1, 2023)

(October 1, 2023)

(January 8, 2024) 1

Revision of Sections 105, 106, 412, and 601 - PCCP Acceptance and Recycled Concrete Aggregate

(September 30, 2024) 15

Revision of Section 106 – Check Testing (December 26, 2024) 1

Revision of Section 106 - Conformity to the Contract of Hot Mix Asphalt (Less than 5000 Tons)

(October 1, 2023) 3

Revision of Section 106 - Control of Material (September 30, 2024) 1

Revision of Section 107 - Water Quality Control (Under One Acre of Disturbance)

(October 1, 2023) 9

Revision of Section 207 - Topsoil (October 1, 2023) 9

Revision of Section 208 - Erosion Control (Under One Acre of Disturbance)

(October 1, 2023) 38

Revision of Section 212 - Soil Amendments, Seeding, and Sodding

(October 1, 2023) 25

Revision of Section 401 - Plant Mix Pavements - General

(September 30, 2024) 5

Revision of Section 412 – Powered Screeds (December 26, 2024) 1

Revision of Sections 412 and 705 – Preformed Compression Seals

(October 1, 2023) 2

Revision of Section 601 - Concrete Acceptance (April 9, 2024) 4

Revision of Section 601 – Pigment in Concrete (July 23, 2024) 1

Revision of Section 627 – Pavement Marking Paint (March 21, 2025) 15

Revision of Section 627 - Pavement Marking Paint (Temporary)

(April 2, 2024) 1

Name Date No. of Pages

Revision of Section 630 – MHT Signature Requirements (December 26, 2024) 1

Revision of Sections 701 and 711 – Rapid Hardening Cement

(October 1, 2023) 1

Revision of Section 713 - Retroreflectors and Drum and Tubular Marker Sheeting Requirements

(December 26, 2024) 4

Affirmative Action Requirements Equal Employment Opportunity

(October 1, 2023) 13

Certified Payroll Requirements for Construction Contracts

(October 1, 2023) 1

Disadvantaged Business Enterprise (DBE) Requirements (October 1, 2023) 15

Minimum Wages, Colorado, U.S. Department of Labor General Decision Number CO20250006, Mod 1, Highway Construction for Adams, Arapahoe, Broomfield, Clear Creek, Elbert, Gilpin, Jefferson, and Park Counties

(March 14, 2025) 10

On the Job Training (October 1, 2023) 6

Required Contract Provisions Federal-Aid Construction Contracts

(October 23, 2023) 15

Required Contract Statements Federal American Rescue Plan ACT / State and Local Fiscal Recovery Funds (ARPA /SLFRF) Construction Contracts

(October 1, 2023) 1

Notice To Bidders

The Proposal guaranty shall be a certified check, cashier’s check or bid bond in the amount of 5 percent of the Contractor’s total bid.

Pursuant to subsections 102.04 and 102.05, it is recommended that bidders on this project review the work site and plan details with an authorized Department representative.

Prospective bidders shall contact one of the following listed authorized Department representatives at least 12 hours in advance of the time they wish to go over the project.

Director of Public Works - Maria D’Andrea Phone: (303)-205-7601

Project Engineer - As designated by the Director of Public Works

The above referenced individuals are the only representatives of the Department with authority to provide any information, clarification, or interpretation regarding the plans, specifications, and any other contract documents or requirements.

Questions received from bidders along with CDOT responses will be posted in the CDOT Business Management System (B2Gnow) as they become available. To access questions and answers in B2Gnow, login to the system via the website address below. From the home page click on the “View” tab and select “My Bid Solicitations” from the dropdown menu to view current posted bid Solicitation documents for the project.

https://cdot.dbesystem.com/

If the bidder has a question or requests clarification that involves the bidder's innovative or proprietary means and methods, phasing, scheduling, or other aspects of construction of the project, the Project Engineer will direct the bidder to contact the Director of Public Works directly to address the question or clarification. The Director of Public Works will keep the bidder’s innovation confidential and will not share this information with other bidders.

The Director of Public Works will determine whether questions are innovative or proprietary in nature. If the Director of Public Works determines that a question does not warrant confidentiality, the bidder may withdraw the question. If the bidder withdraws the question, the Director of Public Works will not answer the question and the question will not be documented on the CDOT web site. If the bidder does not withdraw the question, the question will be answered, and both the question and CDOT answer will be posted on the web site. If the Director of Public Works agrees that a question warrants confidentiality, the Director of Public Works will answer the question, and keep both question and answer confidential. CDOT will keep a record of both question and answer in their confidential file.

All questions shall be directed to the CDOT contacts listed above no later than 7:00 A.M.

Monday of the week of bid opening. Final questions and answers will be posted no later than Tuesday morning of bid opening week.

Notice To Bidders

Questions and answers shall be used for reference only and shall not be considered part of the Contract.

Disadvantaged Business Enterprise (DBE) Contract Goal

This is a federally-assisted construction project. As described in the CDOT DBE Standard Special Provision, the Bidder shall make good faith efforts to meet the following contract goal:

Percent DBE participation.

8.5

Commencement and Completion of Work (Working Day)

The Contractor shall commence work under the Contract on or before the 15th day following Contract execution or the 30th day following the date of award, whichever comes later, unless such time for beginning the work is changed by the Chief Engineer in the "Notice to Proceed." The Contractor shall complete all work within sixty-five (65) working days per the "Notice to Proceed."

On The Job Training Contract Goal

The Department has determined that On the Job Training shall be provided to trainees with the goal of developing full journey workers in the types of trade or classification involved.

The contract goal for On the Job Trainees working in an approved training plan in this Contract has been established as follows:

Minimum number of total On the Job Training required 240 hours

Revision of Section 101 Definitions and Terms

Section 101 of the CDOT Standard Specifications is hereby revised for this project as follows:

The following changes are made to Subsection 101.02:

Add the following definition:

Approved Equal. A product, component or process whose use in or on a particular project is specified as a standard for comparison purposes only. The "equal" product, component or process shall be the same or better than that named in function, performance, reliability, quality, and general configuration. Determination of equality in reference to the project design requirements will be made by the Engineer. It is the responsibility of the supplier to provide all necessary information for determining equality.

Delete the definition for CDOT Resident Engineer and replace with the following:

Public Works Director. The Public Works Director for the City, or their duly authorized representative, is responsible for public works activities within the City.

The Public Works Director is responsible for final decisions relating to Contractor claims for contract modification orders, additional compensation, or extensions of contract time. All references to “CDOT Resident Engineer” shall be replaced with “Public Works Director”.

In the definition for Contract, delete the first paragraph and replace with the following:

The written agreement between the City and the Contractor setting forth the obligations of the parties for the performance of the work and the basis of payment.

Delete the definition for Contractor and replace with the following:

Contractor. The individual, firm, or corporation contracting with the City for performance of prescribed work.

Delete the definition for Department and replace with the following:

Department. Department of Public Works. A department with the City.

Add the following definition:

Easement. The right to use a defined area of property for a specific purpose or purposes as set forth in a document which has been made a part of the Contract Documents.

Delete the definition for Engineer and replace with the following:

Engineer. The CIP Program Manager of the Department acting directly or through an authorized representative, who is responsible for engineering and administrative supervision of the project. For the purpose of these specifications, the Engineer is responsible for initial decisions relating to Contractor claims for additional

Definitions and Terms compensation or additional time. The Engineer or Director are the City representatives who may approve modifications to Contract documents or drawings.

Delete the definition for Holidays and replace with the following:

Holidays. Holidays recognized by the City are:

New Year’s Day Martin Luther King, Jr. Day (observed) Presidents’ Day Memorial Day Juneteenth Independence Day Labor Day Veterans’ Day Thanksgiving Day Day after Thanksgiving Day Christmas Day

When New Year’s Day, Juneteenth, Independence Day, Veterans’ Day or Christmas Day falls on a Sunday, the following Monday shall be considered a holiday. When one of these days falls on a Saturday, the preceding Friday shall be considered a holiday.

Additional legal holidays, when designated by the Governor or the President of the United States, may also be recognized by the City.

Add the following definitions:

Lump Sum. A method of payment providing for one all-inclusive cost for the work or for a particular portion of the work; including any incidental costs necessary to perform that item of work.

Notification of Award. A written notification of acceptance of the bid from the City to the successful bidder.

Delete the definition for Preconstruction Conference and replace with the following:

Pre-construction Conference. A meeting of City project personnel, Contractor project personnel, and other stakeholders held prior to the beginning of construction at which topics pertinent to the successful completion of the work are discussed.

Delete the definition for Project Engineer and replace with the following:

Project Engineer. The Engineer’s duly authorized representative who may be a City employee or an employee of a consulting engineer (consultant) under contract to the City as defined below:

(a) City Project Engineer. The City employee who is the Engineer’s duly authorized representative. The City Project Engineer is in direct charge of the work and is responsible for the administration and satisfactory completion of the project under contract.

Definitions and Terms

(b) Consultant Project Engineer. The consultant employee under the responsible charge of the consultant’s Professional Engineer who is in direct charge of the work and is responsible for the administration and satisfactory completion of the project. The Consultant Project Engineer’s duties are delegated by the Engineer in accordance with the scope of work in the consultant’s contract with the City.

The Consultant Project Engineer is not authorized to sign or approve Contract Modification Orders.

Delete the definition for Proposal Guaranty and replace with the following:

Bid Bond. The security required to be submitted with each proposal to guarantee that the bidder will enter into the Contract if the proposal is accepted. All references to “Proposal Guaranty” shall be replaced by “Bid Bond”.

Delete the definition for Region Transportation Director and replace with the following:

Region Transportation Director. All references to “Region Transportation Director” shall be replaced by “Public Works Director”.

Delete the definition for Right of Way and replace with the following:

Right of Way. A general term denoting land, property, or interest therein, usually in a strip, acquired for or devoted to a highway, street, alley, or other access.

In the definition for Specifications, delete (a) and replace with the following:

(a) Standard Specifications: The Colorado Department of Transportation’s book (including errata) titled Standard Specifications for Road and Bridge Construction.

The book is divided into three parts namely:

1. General Provisions (Division 100)

2. Construction Details (Divisions 200 thru 600)

3. Material Details (Division 700)

Add the following definition:

Utility. Tracks, overhead or underground wires, pipelines, conduits, pipes, ducts, or structures, owned, operated or maintained in or across a public right-of-way or easement.

In the definition for Workplace Violence, replace all references to CDOT with the City.

Revision of Section 102

Bidding Requirements and Conditions

Subsection 102 of the CDOT Standard Specifications is hereby revised for this project as follows:

In subsection 102.02, delete the first sentence and replace with the following:

The City will publish bidding opportunities to prospective bidders on the Rocky Mountain E-Purchasing System (a division of BidNet) at www.rockymountainbidsystem.com (800-835-4603 option #2) and the City website at www.ci.wheatridge.co.us.

In subsection 102.02, delete the second paragraph and replace with the following:

All bidders on projects shall submit electronic bids only through BidNetdirect.com.

Delete subsection 102.04 and replace with the following:

102.04 Interpretation of Plans and Specifications. If it should appear to a Bidder that the work to be done or matters relative thereto are not sufficiently described or explained in the Contract Documents or that the Contract Documents are not definite and clear, the Bidder may make written inquiry regarding same to the City Procurement contact before the Deadline for Questions specified in the advertisement for bids.

Then, if in the judgment of the City, additional information or interpretation is necessary, such information will be supplied in the form of an addendum. Each addendum will be delivered where possible by posting to the City website and BidNet.

Such addenda shall have the same binding effect as though contained in the main body of the Contract Documents. Oral instructions or information concerning the contract documents or the project given out by officers, employees, or agents of the City to prospective bidders shall not bind the City. If no request is made before the Deadline for Questions, Bidder waives right to any conflict in the Contract Documents.

Add subsections 102.11 – 102.12 as follows:

102.11 Bid Prices. Bidders must include, in their bid prices, the entire cost of each item of the work set forth in the proposal, and it is understood and agreed that there is included, in each lump sum or unit price bid, the entire cost of materials and labor incidental or necessary to the completion of that portion of the work covered, unless such work is expressly included in other lump sum or unit price bids in the proposal.

Since the bid information cannot be guaranteed, the Contractor shall have assumed the risks attendant to successful performance of the work at the amount of the bid.

102.12 City Contract Laws. Section 2-3 (a) – (e) of the City's Code of Laws is presented below:

(a) Fiscal year. Fiscal year for the City shall commence on January 1 and end on December 31.

(b) Budget contains appropriations. The City council shall annually adopt a budget in a manner consistent with the provisions of Chapter X of the Home Rule Charter of the City of Wheat Ridge. Upon the annual adoption by the City

Bidding Requirements and Conditions council of each fiscal year's budget, levels of authorized expenditures from the funds indicated within the annual budget itself and/or the adopting resolution shall constitute the appropriation of the amounts specified therein for the purposes specified therein. During the course of each fiscal year, approval by the City Council of contracts for goods or services, and/or approval of bids for the provision of specified goods or services, shall likewise constitute appropriations of the amounts specified therein for the purposes specified therein.

(c) No contract to exceed appropriation. During each and any fiscal year, no contract entered into by or on behalf of the City shall expend or contract to expend any money, or incur any liability, nor shall any contract be entered into nor any bid be awarded by or on behalf of the City which, by its terms, involves the expenditure of money for any of the purposes for which provision is made either in the adopted budget or adopting resolution, including any legally authorized amendments thereto, in excess of the amount appropriated in the budget or the approved contract or bid award. Any contract or bid award, either verbal or written, made in violation of the provisions of this section shall be void as to the City and no City monies from any source whatsoever shall be paid thereon.

(d) Amendments and authorized expenditures. Nothing contained herein shall preclude the City council from adopting a supplemental appropriation in a manner consistent with the provisions of Section 10.12 of the Home Rule Charter of the City. Further, nothing contained in this section shall prevent the making of contracts for governmental services or for capital outlay for a period exceeding one (1) year if such contracts are otherwise allowed by the Home Rule Charter of the City; provided, however, any contract so made shall be executory only for the amounts agreed to be paid for such services to be rendered in succeeding fiscal years.

(e) Notice to parties contracting with the City. All persons contracting with, or selling goods or services to, the City are hereby placed upon notice of the provisions of this section. The provisions of this section shall become a part of the Merit System Personnel Rules and Regulations of the City of Wheat Ridge;

shall be referred to specifically in all public works bid documents and contracts; and shall be incorporated into, and specially noted within, all other contracts entered into by or on behalf of the City wherein City funds are used to pay for said contract.

Section 2-4 of the City Code of Laws is presented below:

(a) The City may, by contract, require the contractor awarded a public works contract to waive, release or extinguish its rights to recover costs or damages, or obtain an equitable adjustment, for delays in performing such contract if such delay is caused, in whole or in part, by acts or omissions of

Bidding Requirements and Conditions the City or its agents, if the contract provides that an extension of time for completion of

(b) the work is the contractor's remedy for such delay. Such a clause is valid and enforceable, any provision of state law to the contrary notwithstanding.

(b) The City council, by this ordinance (Ordinance No. 812), declares its local contracting powers to be a matter of purely local concern, and further specifically intends to supersede, pursuant to its powers under Article XX of the Colorado Constitution, the provisions of Sections 24-91-101 and 24-91- 103.5, C.R.S., insofar as they conflict with the provisions of this section of the Code of Laws of the City of Wheat Ridge, Colorado.

Revision of Section 103

Award and Execution of Contract

Section 103 of the CDOT Standard Specifications is hereby revised for this project as follows:

Subsection 103.01 shall include the following:

The City reserves the right to settle bid discrepancies that occur in the low Bidder's proposal at the time the Contract is awarded. Bid discrepancies will be settled with the understanding that the low Bidder waives any claims against the City because of Bidder's mistakes in the Bid Proposal.

In subsection 103.02 change the time of award from 30 calendar days to 60 calendar days.

Subsection 103.04 shall include the following:

Failure to execute the Contract and file acceptable bonds within 15 days after the date of award shall be just cause for the cancellation of the award and the forfeiture of the proposal guaranty which shall become the property of the City.

As stated in subsection 103.02, the City will execute the contract award within 60 days of solicitation closing.

The City may elect to waive forfeiture of the bid bond only if it is determined that the bidder has made a good faith remedial error and that no damages were sustained by the City as a result of the failure by the successful bidder to execute the Contract and file acceptable bonds within the time prescribed. Award may then be made to the next lowest responsible bidder, or the work may be re-advertised and constructed under Contract or otherwise as the City may decide.

Add subsections 103.05 – 103.06 as follows:

103.05 Cancellation of Award. The City reserves the right to cancel the award of any Contract at any time before the execution of said Contract by all parties without liability against the City.

103.06 Return of Bid Bonds. All bid bonds will be retained by the City. All proposal guaranties in the form of certified checks or cashier checks will be treated as follows:

For the three lowest Bidders, the bid bond will be held until the Contract is awarded to the successful bidder. Bid bond will then be returned to the other Bidders. The bid bond of the successful Bidder will be returned upon receipt of executed Contract and approved payment and performance bonds.

Revision of Section 106

Conformity to the Contract of Hot Mix Asphalt

Revise Section 106 of the Standard Special Provisions for this project as follows:

Subsection 106.05 shall include the following:

For this project, Contractor process control testing of hot mix asphalt is mandatory.

Revision of Section 202

Removal Of Asphalt Mat (Planing)

Revise Section 202 of the Standard Specifications for this project as follows:

Delete subsection 202.09, and replace it with the following:

202.09 Removal of Asphalt Mat (Planing). Before beginning planing operations, the Contractor shall submit a planing plan and a Process Control Plan (PCP) for approval by the Engineer. The planing plan shall include at a minimum:

(1) The number, types and sizes of planers to be used.

(2) The width and location of each planing pass.

(3) The number and types of brooms to be used and their locations with respect to the planers.

(4) The proposed method for planing and wedging around existing structures such as manholes, valve boxes, and inlets.

(5) The longitudinal and transverse typical sections for tie-ins at the end of the day.

(6) If requested by the Engineer, a plan sheet showing the milling passes.

The PCP shall include as a minimum:

(1) The schedule for replacing the cutting teeth.

(2) The daily preventive maintenance schedule and checklist.

(3) Proposed use of automatic grade controls.

(4) The surface testing schedule for smoothness.

(5) The process for filling distressed areas.

(6) The schedule for testing macrotexture of the milled surface.

(7) Corrective procedures if the milled surface does not meet the minimum macrotexture specification.

(8) Corrective procedures if the milled surface does not meet the minimum transverse or longitudinal surface finish when measured with a 10 foot straightedge.

The Contractor shall not start the planing operation until the hot mix asphalt (HMA) mix design has been approved and a Form 43 has been signed by the Engineer.

The existing pavement shall be milled to the cross-slope as shown on the plans and shall have a surface finish that does not vary longitudinally or transversely more than ⅜ inch from a 10 foot straightedge. A 10 foot straightedge shall be supplied by the Contractor.

All milled surfaces shall be broomed with a pick-up broom, unless otherwise specified, before being opened to traffic. A sufficient number of brooms shall be used immediately after planing to remove all milled material remaining in the roadway.

If the Contractor fails to adequately clean the roadway, work shall cease until the Engineer has approved the Contractor’s revised written proposal to adequately clean the roadway.

The milled surface shall have a macrotexture equal to or less than 0.170 inches for single-lift overlays and 0.215 inches for multiple-lift overlays as tested per CP 77. Milled surfaces that do not meet these criteria shall require corrective action per the PCP. The Contractor shall be responsible for testing the macrotexture of the milled surface at the location directed by the Engineer per CP 77 at a stratified random frequency of one test per 10,000 square yards or a minimum of once per workday.

At the completion of each day’s work, longitudinal vertical edges greater than 1 inch shall be tapered. No transverse vertical edges will be allowed. Longitudinal milled surface tie-ins to existing pavement shall be tapered to not less than a 3:1 slope, transverse milled surface tie-ins to existing pavement shall be tapered to not less than a 50:1 slope.

Transverse tapered joints may be tapered with the planing machine, a temporary asphalt ramp, or other methods approved by the Engineer. No longitudinal joint between the milled and existing surfaces shall fall between 1 to 5 feet of any lane line.

If the transverse joint is tapered with a temporary asphalt ramp, the milled surface at the joint shall be constructed as a butt joint the full depth of the lift of asphalt to be placed on the milled surface. The Contractor shall be responsible for maintaining this asphalt ramp until all corresponding HMA is placed. All work associated with this joint will not be paid for separately but shall be included in the cost of planing.

If the transverse joint is tapered with a planing machine, a butt joint shall be cut into the taper the full depth of the lift of asphalt to be placed on the milled surface before commencement of resurfacing. All work associated with this joint will not be paid for separately but shall be included in the cost of planing.

Other approved transverse joint tapers shall be maintained at the expense of the Contractor, and at a minimum shall incorporate a butt joint the full depth of the lift of asphalt to be placed on the milled surface before commencement of resurfacing.

Distressed or irregular areas identified in the planed surface by the Engineer shall be patched.

The roadway shall be left in a safe and usable condition at the end of each workday. The Contractor shall take appropriate measures to ensure that the milled surface does not trap or hold water. All required pavement markings removed by the planing shall be restored before the roadway is opened to traffic.

All milled surfaces to be overlaid with HMA shall be covered with new asphalt within seven

(7) working days.

All planing shall be completed full width and parallel to the travel lanes before resurfacing commences unless otherwise directed by the Engineer.

All material generated by the planing operation shall become the property of the Contractor unless otherwise noted in the Contract.

Each planer shall conform to the following:

The planer shall have sufficient power, traction and stability to maintain an accurate depth of cut. The propulsion and guidance system of the planer shall be maintained in such condition that the planer may be operated to straight and true lines.

The planer shall be capable of operating with automatic grade controls (contact or non-contact) on both sides of the machine using a 30 foot averaging system or other approved grade control systems. The use of such controls shall be described in the Contractor’s PCP.

The planer shall be capable of picking up the removed material in a single operation. A self-loading conveyor shall be an integral part of the planer. Windrows will not be allowed.

Subsection 202.12 shall include the following:

Macrotexture testing, macrotexture corrective actions, planers, brooms, and all other work necessary to complete the item, Removal of Asphalt Mat (Planing), will not be measured and paid for separately, but shall be included in the work.

Clean Valve Box

Section 202 of the Standard Specifications is hereby revised for this project as follows:

Subsection 202.02 shall include the following:

The Contractor shall clean each valve box of all foreign debris such that the operating nut of the valve is fully accessible to operation. The Engineer will obtain the Owner’s inspection and written approval before accepting the work.

Subsection 202.12 shall include the following:

Pay Item Pay Unit Clean Valve Box Each

Revision of Section 210

Valve Box and Manhole Adjustments

Section 210 of the Standard Specifications is hereby revised for this project as follows:

Subsection 210.10 shall include the following:

The Contractor shall notify each utility company (Owner) prior to any construction that will involve the adjustment of its valve boxes or manholes.

Each Owner will mark all of its valve boxes and manholes that will be involved in the specified construction area.

Prior to commencing construction, the Contractor shall coordinate and conduct, with the Engineer and each Owner, an inspection of all impacted manholes and valve boxes. The purpose of this inspection will be to account for all valve boxes and manholes involved in the construction and determine their accessibility and condition.

The Contractor shall provide traffic control for this inspection and for the final inspection. The Contractor shall coordinate construction with the Owner to allow sufficient time for the Owner to make all necessary repairs to valve boxes and manholes before construction begins in the area of the valve boxes and manholes. All parties shall agree on the condition of each valve box and manhole prior to construction.

The Contractor shall replace all valve box sections damaged or misplaced during construction with new valve box sections complying with the requirements of the Owner’s specifications. The Contractor shall set each valve box to be adjusted so that it is ¼ inch to ½ inch below the final grade of the paved surface, or to the satisfaction of the Owner, and so that it is plumb over the operating nut of the valve.

The Contractor shall adjust all manholes that require adjustment with materials conforming to the Owner’s specifications. Some adjustments may require the addition, removal, or replacement of a manhole or cone section. If manhole adjustment requires a manhole cone or barrel section to be added, removed, or replaced, this work will not be considered as "Adjust Manhole", but shall be performed in accordance with the Section 210 requirements for the item "Modify Manhole".

The Contractor shall prevent tools, concrete, dirt, or debris of any kind from falling into the channel of the existing manhole. The Contractor shall clean or remove debris from downstream sewer that enters as a result of the Contractor’s work.

When the project includes planing prior to resurfacing, the Contractor shall first lower all valve boxes and manholes below the surface to be planed and then adjust them up to final grade after the paving operation is complete.

Revision of Section 210

Valve Box and Manhole Adjustments

Prior to the final inspection, the Contractor shall thoroughly clean all valve boxes designated for cleaning. This work shall be performed in accordance with the Section 202 requirements for the item "Clean Valve Box".

The Contractor shall coordinate and conduct, with the Engineer and each Owner, a final inspection upon completion of construction. This inspection shall assure that all valve boxes and manholes are in compliance with these requirements. The Engineer will obtain the Owner’s written approval before accepting the work.

Subsection 210.12 shall include the following:

The Contractor will be paid separately for each valve box or manhole adjustment completed down and for each adjustment completed up.

Subsection 210.13 shall include the following:

Payment will be made under:

Pay Item Pay Unit Adjust Valve Manhole Each Adjust Valve Box Each

Adjustments that include adding, removing, or replacing a manhole cone or barrel section will be paid for under the Section 210 pay item, Modify Manhole.

Cleaning designated valve boxes will be paid for under the Section 202 pay item, Clean Valve Box.

Revised Section 240

Protection of Migratory Birds Biological Work Performed by the Contractor’s Biologist

Section 240 is hereby added to the Standard Specifications for this project as follows:

Description

240.01 This work consists of protecting migratory birds during construction work on structures.

Materials and Construction Requirements

240.02 The Contractor shall schedule construction activity, including clearing and grubbing operations and work on structures, to avoid taking (pursue, hunt, take, capture, or kill;

attempt to take, capture, kill or possess) migratory birds or their nests protected by the Migratory Bird Treaty Act (MBTA). If construction activity is to occur between April 1 and August 31, then the following specifications must be followed and the Contractor shall retain a qualified wildlife biologist to determine where nest removal may occur or will be required during construction. The wildlife biologist shall have a minimum of three years’ experience conducting migratory bird surveys and implementing the requirements of the MBTA. The Contractor shall submit documentation of the biologists’ education and experience to the Engineer for acceptance. A biologist with less experience may be used by the Contractor subject to the approval of the Engineer based on review of the biologist’s qualifications. If all construction activities occur after August 31 and before April 1, then the requirements set forth in this specification are not required.

The wildlife biologist shall record the location of each protected nest, bird species, the protection method used, and the date installed. A copy of these records will be submitted to the Engineer.

(A) Vegetation Removal. When possible, vegetation shall be cleared prior to the time when active nests are present. Vegetation removal activities shall be timed to avoid the migratory bird breeding season which begins on April 1 and runs to August 31. All areas scheduled for clearing and grubbing between April 1 and August 31 shall first be surveyed by the wildlife biologist within 50 feet of the work limits for active migratory bird nests. Contractor personnel shall enter areas only if a written, signed document granting permission to enter the property has been obtained from the property owner.

The Contractor shall document all denials of permission to enter property. The Contractor shall avoid all migratory bird nests. The Contractor shall avoid the area within 50 feet of the active nests or the area within the distance recommended by the biologist until all nests within that area have become inactive. Inactive nest removal and other necessary measures shall be incorporated into the work as follows.

1. Tree and Shrub Removal or Trimming. Tree and shrub removal or trimming shall occur before April 1 or after August 31 if possible. If tree and shrub removal or trimming will occur between April 1 and August 31, a survey for active nests shall be conducted by the wildlife biologist within the seven days immediately prior to the beginning of work in each area of tree and shrub removal or trimming. The survey shall be conducted for each phase of any tree or shrub removal or trimming.

Revised Section 240

If an active nest containing eggs or young birds is found, the tree or shrub containing the active nest shall remain undisturbed and protected until the nest becomes inactive. The nest shall be protected by placing fence (plastic) a minimum distance of 50 feet from each nest to be undisturbed. This buffer dimension may be changed if determined appropriate by the wildlife biologist and approved by the Engineer.

Work shall not proceed within the fenced buffer area until the young have fledged or the nests have become inactive. If the fence is knocked down or destroyed by the Contractor, the Engineer will suspend the work, wholly or in part, until the fence is satisfactorily repaired at the Contractor’s expense. Time lost due to such suspension will not be considered a basis for adjustment of time charges, but will be charged as contract time.

2. Grasses and Other Vegetation Management. Due to the potential for encountering ground nesting birds’ habitat, if work occurs between April 1 and August 31, the area shall be surveyed by a wildlife biologist within the seven days immediately prior to ground disturbing activities.

The undisturbed ground cover to 50 feet beyond the planned disturbance, or to the right-of-way line, whichever is less, shall be maintained at a height of 6 inches or less beginning April 1 and continuing until August 31 or until the end of ground disturbance work, whichever comes first.

If birds establish a nest within the survey area, an appropriate buffer of 50 feet will be established around the nest by the wildlife biologist. This buffer dimension may be changed if determined appropriate by the wildlife biologist and approved by the Engineer. The Contractor shall install fence (plastic) at the perimeter of the buffer.

Work shall not proceed within the buffer until the young have fledged or the nests have become inactive.

If the fence is knocked down or destroyed by the Contractor, the Engineer will suspend the work, wholly or in part, until the fence is satisfactorily repaired at the Contractor’s expense. Time lost due to such suspension will not be considered a basis for adjustment of time charges, but will be charged as contract time.

(B) Work on Structures. The Contractor shall conduct work on structures in a manner that does not result in a taking of migratory birds protected by the Migratory Bird Treaty Act (MBTA). The Contractor shall not conduct the work on structures during the primary birding season, April 1 through August 31, unless the Contractor takes the following actions:

1. The Contractor shall remove existing nests prior to April 1.

2. During the time that the birds are trying to build or occupy their nests, between

April 1 and August 31, the Contractor shall monitor the structures at least once every three days for any nesting activity.

Revised Section 240

3. If the birds have started to build any nests, the nests shall be removed before they are completed. Water shall not be used to remove the nests if nests are located within 50 feet of any surface waters.

4. Installation of netting may be used to prevent nest building. The netting shall be monitored and repaired or replaced as needed. Netting shall consist of a mesh with openings that are ¾ inch by ¾ inch or less.

If an active nest becomes established, i.e., there are eggs or young in the nest, all work that could result in abandonment or destruction of the nest shall be avoided until the young have fledged or the nest is unoccupied as determined by the Contractor’s biologist and approved by the Engineer. The Contractor shall prevent construction activity from displacing birds after they have laid their eggs and before the young have fledged. If the project continues into the following spring, this cycle shall be repeated. When work on the structure is complete, the Contractor shall remove and properly dispose of netting used on the structure. The taking of a migratory bird shall be reported to the Engineer. The Contractor shall be responsible for all penalties levied by the U. S. Fish and Wildlife Service (USFWS) for the taking of a migratory bird.

Method of Measurement

240.03 Wildlife Biologist will be full compensation for all work and materials required to complete the item, including wildlife biologist, wildlife survey, and documentation (record of nest location and protection method).

Basis of Payment

240.04 The accepted quantities measured as provided above will be paid for at the contract unit price for each of the pay items listed below that appear in the bid schedule.

Pay Item Pay Unit Wildlife Biologist Hour Removal of Nests Hour

Revised Section 250

Environmental, Health and Safety Management

Section 250 of the Standard Specifications is hereby revised for this project as follows:

Subsection 250.03 shall include the following:

The following report is made part of this project. The Contractor is instructed to become familiar with the provisions of the document, which are part of the design specifications:

Initial Site Assessment, Summary of Environmental Considerations, 32nd Avenue

Multimodal Improvements, Wheat Ridge, Colorado Prepared by ERO Resources Corporation dated November 24, 2023.

Environmental evaluations have been completed with results presented in the above referenced Initial Site Assessment (ISA). The Contractor must read and understand these findings, which detail the known environmental conditions that may be encountered during the work and the Contractor’s responsibilities regarding management and disposal of hazardous materials.

The Contractor shall identify an environmental point of contact responsible for compliance with environmental provisions. The environmental point of contact may be the Health and Safety Officer, Monitoring Technician, project Supervisor, or another responsible person. The environmental point of contact must have the appropriate training to understand this specification, as well as the various documents as described herein and appended to the specifications. The environmental point of contact will be responsible for coordinating compliance with those portions of the Contract and specifications that have impacts on environmental and/or permit compliance, as well as local, state, and federal environmental regulations. The Contractor should expect that this person will coordinate with the Engineer regarding compliance with provisions of this Specification.

The Contractor shall be alert during excavation for any visual or olfactory signs of impacts. Contaminated soil is not anticipated to be encountered as part of this project. However, if contamination is encountered during construction activities, work shall stop immediately, and the procedures outlined in Section 250 – Environmental, Health, and Safety Management of the CDOT Standard Specifications for Road and Bridge Construction shall be followed.

Before demolishing any structures or removing utility lines, the Contractor shall determine the presence or absence of asbestos containing materials (ACMs) if not previously identified. If asbestos is present, the contractor shall conduct abatement in accordance with Section 250 – Environmental, Health, and Safety Management of the CDOT Standard Specifications for Road and Bridge Construction, the Air Quality

Revised Section 250

Environmental, Health and Safety Management

Control Commission’s Regulation 8, and relevant Occupational Safety and Health Administration (OSHA) and other state and federal requirements.

Subsection 250.04 shall include the following:

At least 8 paint samples revealed high levels of lead content. Lead-based paint was detected in the paint screened on two fire hydrants and their respective caps, two electrical access boxes, a light post foundation, and a post component. The Contractor shall review the ISA prepared by ERO Resources Corporation and recycle/remove those painted items in accordance with Section 250 – Environmental, Health, and Safety Management of the CDOT Standard Specifications for Road and Bridge Construction, in particular Section 250.04. CDOT requires that all metal project components be recycled. The recycling facility must be notified that metal project components contain lead. Regardless of lead content, the Contractor must also comply with OSHA Regulation 1926.62 for worker safety. OSHA regulations do not define a minimum concentration of lead as a threshold for action. The types and locations of lead-containing or lead-based paint and regulatory requirements are hereby disclosed to the Contractor so that the Contractor may avoid accidental disturbance or worker exposure, and for the Contractor to be in compliance with applicable regulations. Further, paint that could be encountered during renovation/construction activities on this project shall be treated as lead-containing unless sampling has proven otherwise. The contractor shall avoid sanding, cutting, burning, or otherwise causing the release of lead from paint on structural components, as lead-containing and lead-based paint have been identified. Costs for managing metal project components covered with lead paint shall not be paid for separately but shall be included in the cost of the work.

Method of Measurement

All work related to hazardous material management and compliance will be paid for as follows:

Basis of Payment Payment will be made under:

Pay Item Pay Unit Health and Safety Officer Hour Monitoring Technician Hour Material Sampling and Delivery Each Environmental Health and Safety Management FA

All other work listed above, including but not limited to all costs for obtaining approvals and maintaining compliance with permits and regulations, shall be included in the work and will not be measured and paid for separately.

Revision of Section 403

Hot Mix Asphalt

Revise Section 403 of the Standard Specifications for this project as follows:

Subsection 403.02 shall include the following:

The design mix for hot mix asphalt shall conform to the following:

Table 403-1

Property Test

Method Value For Grading

SX (100) S(100) Patching

Air Voids, percent at:

N (design)

CPL 5115

3.5 – 4.5

Lab Compaction (Revolutions):

N (design)

CPL 5115 100 100 100

Stability, minimum CPL 5106 30 30 30 Aggregate Retained on the

4.75 mm (No. 4) Sieve for S, SX and SG, and on the 2.36mm (No. 8) Sieve for ST and SF with at least 2 Mechanically Induced fractured faces, % minimum*

CP 45 60 60 60

Accelerated Moisture Susceptibility Tensile Strength Ratio (Lottman), minimum

CPL 5109

Method B

Minimum Dry Split Tensile Strength, kPa (psi)

CPL 5109

Method B

205 (30) 205 (30) 205 (30)

Grade of Asphalt Cement, Top Layer

PG 76-28 -

PG 76-

Grade of Asphalt Cement, Layers below Top

- PG 64-22

PG 64-

Voids in the Mineral Aggregate (VMA) % minimum

CP 48

See Table

403-2 See Table

403-2

See Table 403-2

Voids Filled with Asphalt

(VFA), %

AI MS-2 65-75 65-75

65-

Property Test

Method Value For Grading

SX (100) S(100) Patching

Dust to Asphalt Ratio Fine Gradation Coarse Gradation

CP 50

0.6 – 1.2

0.8 – 1.6

0.6 – 1.2

0.8 – 1.6

0.6 - 1.2

0.8 – 1.6

Note: AI MS-2 = Asphalt Institute Manual Series 2 Note: Mixes with gradations having less than 40% passing the 4.75 mm (No. 4) sieve shall be approached with caution because of constructability problems.

Note: Gradations for mixes with a nominal maximum aggregate size of one-inch or larger are considered a coarse gradation if they pass below the maximum density line at the #4 screen.

Gradations for mixes with a nominal maximum aggregate size of 3/4” to 3/8” are considered a coarse gradation if they pass below the maximum density line at the #8 screen.

Gradations for mixes with a nominal maximum aggregate size of #4 or smaller are considered a coarse gradation if they pass below the maximum density line at the #16 screen.

*Fractured face requirements for SF may be waived by RME depending on project conditions.

Table 403-2

Minimum Voids in the Mineral Aggregate (VMA) Nominal

Maximum Size*, mm (inches)

***Design Air Voids **

3.5% 4.0% 4.5% 5.0%

37.5 (1½) 11.6 11.7 11.8 N/A

25.0 (1) 12.6 12.7 12.8 N/A

19.0 (¾) 13.6 13.7 13.8 N/A

12.5 (½) 14.6 14.7 14.8 N/A

9.5 (⅜) 15.6 15.7 15.8…