8-2. BID-254-26 LoBo Trail Jay Road Connection Project Specifications.pdf

PROJECT SPECIFICATIONS

LONGMONT-TO-BOULDER (LOBO) TRAIL

JAY ROAD CONNECTION PROJECT

AUGUST 28, 2026

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Boulder County Public Works August 28, 2026 BID #254-26 Federal Aid No. N/A Longmont-to-Boulder (LOBO) Trail, Jay Road Connection Project Project No. TP-LOBO-072

LONGMONT-TO-BOULDER (LOBO) TRAIL

JAY ROAD CONNECTION PROJECT

PROJECT SPECIAL PROVISIONS

The 2025 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

Page Index Pages (Jan. 12, 2026) 1-2 Commencement and Completion of Work (Working Days or Calendar Date) (Jan. 12, 2026) 3 Revision of Section 101 – Definition of Terms (Jan. 12, 2026) 4-5 Revision of Section 102 – Project Plans and Other Data (Jan. 12, 2026) 6 Revision of Section 104 – Scope of Work (Jan. 12, 2026) 7 Revision of Section 106 – Control of Material (Jan. 12, 2026) 8 Revision of Section 107 – Air Quality Control (Jan. 12, 2026) 9 Revision of Section 107 – Fire Protection Plan (Jan. 12, 2026) 10-13 Revision of Section 108 – Prosecution and Progress (Jan. 12, 2026) 14-15 Revision of Section 201 – Clearing and Grubbing (Jan. 12, 2026) 16 Revision of Section 202 – Removal of Structure (Jan. 12, 2026) 17-19 Revision of Section 202 – Removal and Trimming of Trees (Jan. 12, 2026) 20-22 Revision of Section 202 – Removal of Asphalt Mat (Jan. 12, 2026) 23 Revision of Section 208 – Erosion Control (Jan. 12, 2026) 24 Revision of Section 209 – Dust Palliatives (Jan. 12, 2026) 25 Revision of Section 210 – Reset Utility Secondary Service Pedestal (Jan. 12, 2026) 26 Revision of Section 240 – Protection of Migratory Birds – Biological Work

Performed by the Contractor’s Biologist (Jan. 12, 2026) 27-29 Revision of Section 240 – Black-Tailed Prairie Dog Management (Jan. 12, 2026) 30-31 Revision of Section 304 – Aggregate Base Course (Jan. 12, 2026) 32 Revision of Section 304 – Compacted Crusher Fines (Jan. 12, 2026) 33-38 Revision of Section 403 – Hot Mix Asphalt (Jan. 12, 2026) 39-41 Revision of Section 420 – Geotextile (Weed Barrier) (Jan. 12, 2026) 42-46 Revision of Section 601 – Structural Concrete (Jan. 12, 2026) 47 Revision of Section 602 – Reinforcing Steel (Epoxy Coated) (Jan. 12, 2026) 48 Revision of Section 603 – Reinforced Concrete Pipe (Jan. 12, 2026) 49 Revision of Section 604 – Manholes and Inlets (Jan. 12, 2026) 50 Revision of Section 607 – Fence Wire with Treated Wooden Posts (Jan. 12, 2026) 51 Revision of Section 608 – Concrete Sidewalk (6 Inch) (Special) (Jan. 12, 2026) 52-53 Revision of Section 608 – Detectable Warnings (Jan. 12, 2026) 54-55 Revision of Section 608 – Concrete Sidewalk (Colored) (Jan. 12, 2026) 56-57 Revision of Section 608 – Sidewalk Drain (Jan. 12, 2026) 58

PROJECT SPECIAL PROVISIONS (CONTINUED)

Revision of Section 613 – Light Standard (Jan. 12, 2026) 59 Revision of Section 614 – Pedestrian Push Button (Jan. 12, 2026) 60 Revision of Section 615 – Irrigation Diversion Structure (Jan. 12, 2026) 61 Revision of Section 626 – Public Information Services (Jan. 12, 2026) 62-63 Revision of Section 630 – Traffic Control Management (Jan. 12, 2026) 64-65 Revision of Section 630 – Portable Message Sign Panel (Jan. 12, 2026) 66-67 Revision of Section 703 – Aggregates (Jan. 12, 2026) 68 Force Account Items (Jan. 12, 2026) 69 Traffic Control Plan – General (Jan. 12, 2026) 70 Utilities (Jan. 12, 2026) 71-75

CDOT STANDARD SPECIAL PROVISIONS

Name Date # of Pages Revision of Section 105 – Project First (June 11, 2025) 4 Revision of Section 105 – Dispute Resolution, Dispute Review Board And Claims for Unresolved Disputes (June 11, 2025) 24 Revision of Section 107 – Water Quality Control (Under One Acre of Disturbance) (July 1, 2025) 8 Revision of Section 108 – Liquidated Damages (July 1, 2025) 1 Revision of Section 207 – Topsoil (July 1, 2025) 9 Revision of Section 212 – Soil Amendments, Seeding, and Sodding (July 1, 2025) 25 Revision of Section 401 – Composition of Mixtures – Voids Acceptance (July 1, 2025) 1 Revision of Section 401 – Plant Mix Pavements – General (Subsection 401.17) (July 1, 2025) 4 Revision of Section 401 – Reclaimed Asphalt Pavement (July 1, 2025) 2 Revision of Section 401 – Tolerances for Hot Mix Asphalt (Voids Acceptance) (July 1, 2025) 1 Revision of Section 601 – Pigment in Concrete (July 1, 2025) 1 Revision of Section 601 – Structural Concrete (Sept. 12, 2025) 1 Revision of Section 614 – Galvanized Steel Poles (July 1, 2025) 1 Revision of Section 627 – Pavement Marking Paint (July 1, 2025) 15 Affirmative Action Requirements Equal Employment Opportunity (July 1, 2025) 13

END OF INDEX

COMMENCEMENT AND COMPLETION OF WORK

(WORKING DAYS OR CALENDAR DATE)

The Contractor shall commence work under this Contract on or after the 5th day following contract execution, unless such time for beginning the work shall be changed by Boulder County in the "Notice to Proceed." Once work has begun, the contractor will have 70 working days to complete. The contractor shall notify Boulder County 30 days prior to start of construction. Once the contractor starts in a particular location with a specific element of work, they should work on that portion of the project until it is complete.

Construction within the ditch lateral and any construction materially affecting the flow of water to any of the lateral users should be performed during the non-irrigation season (November 1st to April 1st). If work within the lateral will take place during the irrigation season, a temporary diversion shall be constructed to provide uninterrupted water to the lateral users.

Per the Boulder County Stormwater Quality Permit (SWQP) requirements, no earthwork can occur except that which is required to facilitate the installation of control measures until all control measures have been inspected by the county. The Contractor’s schedule shall include this process.

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REVISION OF SECTION 101

DEFINITIONS AND TERMS

Certain terms utilized in the latest edition of the Colorado Department of Transportation Standard Specifications for Road and Bridge Construction shall be interpreted to have different meanings within the scope of this Contract. A summary of redefinitions is as follows:

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

Subsection 101.22 “Contractor” shall mean prefabricator and/or contractor as described in subsection 101.23.

Subsection 101.28 “Department” shall mean Boulder County, Colorado (where applicable).

Subsection 101.29 “Engineer” shall mean County Engineer, Boulder County, Colorado or designated representative (where applicable).

Subsection 101.36 shall include:

Additional holidays recognized by Boulder County are:

New Year’s Eve (Closed at Noon) New Year's Day Martin Luther King, Jr. Day President’s Day Memorial Day Juneteenth Independence Day Labor Day Indigenous Peoples’ Day Veterans’ Day Thanksgiving Day Day after Thanksgiving Christmas Eve (Closed at Noon) Christmas Day

Subsection 101.39 “Laboratory” shall mean Boulder County, Colorado or their designated representative.

Subsection 101.51 “Project Engineer” shall mean Boulder County’s duly authorized representative who may be a Boulder County employee or an employee of a consulting engineer (consultant) under contract to Boulder County. (where applicable)

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REVISION OF SECTION 101

DEFINITIONS AND TERMS

Subsection 101.51 (a) “CDOT Project Engineer” shall be replaced with “Project Engineer” within these specifications. When applicable and when these documents reference a CDOT engineer, this reference shall be construed to mean Project Engineer.

Subsection 101.51 (b) shall be replaced with the following:

“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 Project Engineer in accordance with the scope of work in the consultant’s contract with Boulder County. The Consultant Project Engineer is not authorized to sign or approve Contract Modification Orders.

Subsection 101.58 “Region Transportation Director” shall mean Boulder County Engineer, Boulder County, Colorado or designated representative (where applicable).

Subsection 101.76 “State” shall mean Boulder County, Colorado (where applicable).

REVISION OF SECTION 102

PROJECT PLANS AND OTHER DATA

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

Subsection 102.05 shall include the following:

Boulder County will provide electronic files of drawings, the sample contract document, the project technical specifications in PDF format, online at the designated internet bid advertisement site, and they will be considered as the official bid set and record set.

Contractor's work may be subject to the terms and conditions of certain third-party contracts, which will be incorporated by reference into any contract executed between Contractor and the County with respect to this Project. See agreement between Boulder County and the City of Boulder re: Temporary Access, Construction, and Wetland Mitigation for the Longmont-to-Boulder Regional Trail (LOBO Trail) and Agreement between Boulder County and Lateral Users of the Boulder and White Rock Ditch and Reservoir Company.

REVISION OF SECTION 104

SCOPE OF WORK

Section 104 of the Standard Specifications is hereby revised as follows:

Subsection 104.01 shall include the following:

The Contractor is required to obtain a Boulder County Stormwater Quality Permit for this project. This shall not be paid for separately but shall be included in the work.

The Contractor is required to obtain a Boulder County Community Planning and Permitting Building and Grading Permit. This shall not be paid for separately but shall be included in the work.

Subsection 104.04 shall include the following:

Employee vehicle parking is prohibited where it conflicts with safety, access or flow of traffic. The Contractor is responsible for obtaining, coordinating and maintaining acceptable parking and staging areas for the duration of the construction activities. This shall not be paid for separately but shall be included in the work.

REVISION OF SECTION 106

CONTROL OF MATERIAL

Section 106 of the Standard Specifications is hereby revised for this project as follows:

Subsection 106.03 shall include the following:

For projects not funded with State or Federal Highway Administration (FHWA) monies, sampling and testing will be done in accordance with Boulder County Public Work Department’s Minimum Guideline for Sampling and Testing.

The Contractor will be responsible for establishing, documenting, and implementing a Quality Control Plan. The Quality Control Plan shall include all procedures necessary for the Contractor to control the quality of its production processes to meet the requirements of the Contract. The Contractor’s Quality Control Plan shall include a testing and inspection schedule to control the production processes.

Boulder County will provide a qualified Construction Quality Assurance team to perform Quality Assurance (QA) testing, auditing and acceptance testing. The QA staff shall remain independent from the Contractor’s production and Quality Control (QC). The Boulder County Construction Inspection team and/or testing firm will perform on-site inspection and testing of the construction elements of the work to verify that all work has been constructed in conformance with the Contract requirements.

REVISION OF SECTION 107

AIR QUALITY CONTROL

Section 107 of the Standard Specifications is hereby revised for this project as follows:

Subsection 107.24 shall include the following:

Equipment Emissions. Boulder County projects shall meet or exceed current Colorado Air Quality standards. The project work shall be performed using practices that minimize air quality detriments during construction. All the standards below shall be followed to improve air quality related to this project:

(a) Emissions standards:

(1) Optimally, electric or hybrid powered equipment or vehicles will be used on all projects.

(2) Equipment engines shall be compliant with the most recent Environmental Protection Agency (EPA) requirements.

(3) Contractors are required to maintain a minimum emissions level for diesel fueled equipment at a Tier 3 level.

(4) Contractors shall provide certification of compliance with diesel emissions standards. Failure to do so will result in immediate stoppage of work and is a non-excusable delay per subsection 108.08(c)2.

(5) All diesel vehicles, construction equipment, and generators on site shall be fueled with ultra-low sulfur diesel fuel (ULSD) or a biodiesel (B20) blend approved by the original engine manufacturer with sulfur content of 15 ppm or less.

(b) Exemption. Emergency equipment is exempt from this specification. All reasonable effort will be made to replace equipment placed in service at the beginning of the emergency work with equipment as specified above as soon as possible.

(c) Definition. Vehicle, for the purposes of this specification, is defined as any diesel-powered company owned car or truck. It does not apply to personal vehicles.

(d) Cost. Unless shown otherwise in the bid tabulation for this project, costs to achieve this specification will be included in the overall cost of the project.

FIRE PROTECTION PLAN

Section 107 of the Standard Specifications is hereby revised as follows:

Subsection 107.18 shall be deleted and replaced with the following:

107.18 Fire Protection Plan. The following work elements are considered safety critical work for this project:

(a) Fire Protection Plan. Prior to start of work, the Contractor shall submit a Fire Control

Plan in writing to the Engineer and Local Fire Authority for approval. The plan shall include the following:

(1) The name and contact information of a Fire Control Coordinator who shall be assigned to the project.

(2) A list of numbers to call in case of a fire, including 911 (or the equivalent in the area). Also, a 24-hour Emergency Contact List which, at a minimum, includes Project Superintendent, Project Foreman and Project Traffic Control Supervisor.

(3) A complete list, including storage locations, of all tools and equipment the Contractor will use in the event of an emergency within project limits.

(4) Methods that will be employed if a fire is encountered or started during construction activities within the project limits.

(5) Specific fire prevention precautions, and the required fire mitigation equipment, for every activity which has the potential for starting a fire. At a minimum the plan shall address prevention planning related to use of heavy equipment, vehicles, hand tools, storage and parking areas.

(6) Specific precautions for fueling operations.

(7) Provisions for field safety meetings. The Contractor shall conduct field safety meetings (also known as toolbox or tailgate meetings) at least once per week to include a local Fire Authority Representative. The Contractor shall encourage participation by all persons working at the project site. Participants shall discuss specific fire prevention precautions for construction activities.

(b) Open Burn Exemption. A BURN EXEMPTION may be requested by the Contractor from the

Boulder County Sheriff’s Office if current fire restrictions are in place. The fire restrictions Prohibit:

(1) Building, maintaining, attending, or using an open fire, campfire or stove fire

(including charcoal barbecues and grills) on public land;

(2) Use of all personal fireworks;

(3) Shooting or discharging firearms for recreational purposes, except for hunting with a valid and current hunting license on public land;

(4) Smoking, except in an enclosed vehicle or building, a developed recreation site, or while stopped in an area at least three feet in diameter that is barren or cleared of all flammable materials;

(5) Operating a chainsaw without a USDA or SAE-approved spark arrester properly installed and in effective working order. A chemical, pressurized fire-extinguisher must be kept with the operator, and at least one round-point shovel with an overall length of at least 35 inches must be readily available for use;

(6) Welding or operating acetylene or other open-flame torches, except in cleared areas of at least 10 feet in diameter, and with a chemical, pressurized fire-extinguisher immediately available for use; and

(7) Using an explosive.

(c) Equipment and Procedures.

(1) Fire Boxes. If required by the local Fire Authority shall contain tools and equipment that shall be used exclusively for controlling or suppressing fires which occur due to construction activities on project sites. Each fire box shall contain, as a minimum, the following:

(1) Five round-pointed shovels,

(2) Two double-bitted axes,

(3) Three Pulaskis or mattocks,

(4) Two backpack pumps, and

(5) Four large fire extinguishers as prescribed by the local Fire Authority.

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(2) Welding/Torching/Cutting/Drilling. If work at field locations is required, the work shall be done at a location where all flammable material has been cleared within a 30-foot radius and approved by the local Fire Authority.

(3) Spark Arrestors. All diesel and gasoline powered engines, both mobile and stationary, shall be equipped with serviceable spark arrestors each gasoline power saw shall be provided with a spark screen and a muffler in good condition. Spill-proof metal safety cans shall be used for refueling. Approved and inspected by the local Fire Authority.

(4) Power Saws. Each gasoline power saw shall be provided with a spark screen and a muffler in good condition. Spill-proof metal safety cans shall be used for refueling.

(5) Storage and Parking Areas. Batch plant areas, equipment service areas, parking areas, gas and oil drum storage areas, and explosive storage areas shall be cleared of all flammable materials for a distance of 50 feet. Small stationary engine sites shall be cleared of all flammable material for distance of 20 feet. Other mitigation methods may be used as approved by the Engineer and applicable codes.

(d) Fire Control Coordinator Responsibilities. The Fire Control Coordinator shall:

(1) Be the primary contact for the local Fire Authority and Project Engineer

(2) Implement the Fire Control Plan.

(3) Monitor, manage, and adjust the Fire Control Plan as needed as construction work progresses.

(4) Document in a letter to the Engineer and Local Fire Authority changes to the Fire Control Plan.

(5) Contact local firefighting authorities 3 days in advance when a hazardous operation is scheduled. Inspection due to construction activities within project limits may be required.

(6) Coordinate fire control, mitigation and possible suppression activities until authorities arrive, including the evacuation of staff.

(7) When the Fire Control Coordinator cannot be on the project site, they shall designate a person who is on site to serve as the Fire Control Coordinator. The Fire Control Coordinator, or their designee, shall be on site at all times that work is being performed.

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(e) Open Burning During Weather Events. During any of the following weather events, open burning is not permitted in unincorporated Boulder County from time of issuance until midnight in which the event expires: Red Flag Warning, High Wind Warning, High Wind Watch and Fire Danger Warning. Check the local forecast for up-to-date information issued by the National Weather Service. This is per Boulder County Ordinance 2018-1, “An Ordinance Repealing and Replacing Boulder County Ordinance 2006-2 and Authorizing the Declaration of Open Fire Bans by the Board of County Commissioners or the County Sheriff.”

The National Weather Service issues weather statements to inform area firefighting and land use management agencies that conditions are ideal for wildland fire ignition and propagation (Red Flag Warning, High Wind Warning, High Wind Watch, Fire Danger Warning).

For this project special provision, smoking is an open flame and shall be included in the definition of open burning, which is not permitted for the above listed weather events.

Any smoking or lighting of items outside or within a vehicle with open windows is not permitted on the project site or within 500 feet of the project’s limits of disturbance.

With the approval of the Engineer, who consults with the local Fire Authority, a designated smoking area may be established.

No additional payment or compensation will be paid to the Contractor during any weather events associated with open burning and include Red Flag Warning, High Wind Warning, High Wind Watch, Fire Danger Warning. Delays may be counted as an excusable delay per Standard Specification 108.08 or at the discretion of the Engineer.

(f) Costs. All costs associated with the preparation and implementation of the Plan and compliance with all fire protection provisions and requirements will not be measured and paid for separately but shall be included in the work.

REVISION OF SECTION 108

PROSECUTION AND PROGRESS

Section 108 of the Standard Specifications is hereby revised for this project as follows:

Subsection 108.03 shall include the following:

The Contractor shall submit a CPM baseline schedule to the Engineer at least three (3) working days prior to the preconstruction meeting. This CPM baseline schedule shall show the major salient features of the project through completion.

The minimum salient features to be shown on the Contractor's CPM Schedule are:

(1) Erosion Control, Mobilization

(2) Construction Surveying

(3) Traffic Control Phasing

(4) Unclassified Excavation

(5) Storm Drainage

(6) Hot Mix Asphalt Placement

(7) Concrete Pavement

(8) Concrete Curb and Ramp

(9) Signing and Striping

(10) Planting, Seeding & Clean Up

Meetings will be required to review progress and plan upcoming activities. The Erosion Control Supervisor, other representatives, as appropriate, the Contractor and all active subcontractors shall attend the meetings. Such meetings will be required on a weekly basis at a time to be determined by the Engineer and the Contractor.

At the weekly progress meetings, the Contractor shall submit a written statement of planned activities and anticipated inspection, testing, and surveying requirements for the upcoming three (3) weeks. The Contractor shall provide a twenty-four24-hour notice to the Engineer if the Contractor elects to change a planned activity.

Subsection 108.05 shall include the following:

All work performed by the Contractor or any of their agents shall be accomplished during the established working hours of 8:00 A.M. and 4:30 P.M., Monday through Friday.

Neither the Contractor nor their agents shall work outside of the daily working hours without prior approval by the Engineer.

REVISION OF SECTION 108

PROSECUTION AND PROGRESS

If the Contractor receives approval to work additional hours for their convenience, the Contractor shall reimburse the County for the cost of providing additional engineering and inspection services. The reimbursement to the County will be at a rate of $125.00 per hour for each County employee and $175.00 per hour for each consultant required to be on the job site. This cost will be deducted from any money due the Contractor.

REVISION OF SECTION 201

CLEARING AND GRUBBING

Section 201 of the Standard Specifications is hereby revised for this project as follows:

Subsection 201.02 shall include the following:

Clearing and grubbing on this project will be limited to clearing and grubbing along the path of the proposed trail and for new sidewalk and pedestrian ramp improvements leading to the trail.

Removal of trees and brush smaller than 3 inches in diameter shall be included as part of the Clearing and Grubbing work.

Trimming of tree branches smaller than two inches in diameter shall be included as part of the Clearing and Grubbing work.

Subsection 201.04 shall include the following:

Pay Item Pay Unit

Clearing and Grubbing Lump Sum

REVISION OF SECTION 202

REMOVAL OF STRUCTURE

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

Subsection 202.02 shall include the following:

Removal of Structure work includes the removal of existing irrigation structures as directed by the Engineer.

Removal of Pipe work includes the removal of existing pipe as shown in the plans and shall be completed as directed by the Engineer.

Removal of Fence work includes the removal of existing wire and wood fence, including the removal of the posts, as shown in the plans and as directed by the Engineer.

Removal of Guardrail Type 3 work includes the removal of existing metal guardrail and posts as directed by the Engineer.

Removal of End Anchorage work includes the removal of existing guardrail end anchorage and posts as directed by the Engineer.

Subsection 202.04 shall include the following:

Removal of Pedestal Pole work includes the removal of existing pedestal pole, signal head and attached hardware as directed by the Engineer. The pedestal pole foundation shall be removed to 2 feet below finished grade and included in the cost of the Removal of Pedestal Pole.

Subsection 202.07 shall include the following:

Removal of Sidewalk, Removal of Concrete Curb Ramp and Removal Of Concrete Pavement work includes the removal of existing concrete sidewalk, pedestrian curb ramps and concrete driveway pavement and shall be completed as directed by the Engineer.

Removal of Curb and Gutter work includes the removal of existing concrete curb and gutter and shall be completed as directed by the Engineer. There are small areas along Spine where the curb and gutter is monolithic with the roadway and these small areas of extended gutter will be included as a part of the Curb and Gutter removal.

Subsection 202.11 shall include the following:

The removal of structure will be measured by the each and shall include the full removal of the structure as directed by the Engineer. The offsite disposal of concrete and other removed materials shall not be paid for separately but shall be included in the work.

The removal of pipe will be measured by the Linear Foot and shall include the full removal of the pipe as directed by the Engineer. The offsite disposal of removed pipe and other removed materials shall not be paid for separately but shall be included in the work.

The removal of sidewalk, removal of concrete curb ramps and removal of Concrete Pavement will be measured by the Square Yard and shall include the full removal of the concrete sidewalk, pedestrian curb ramps and concrete driveway pavement as directed by the Engineer. The offsite disposal of concrete and other removed materials shall not be paid for separately but shall be included in the work.

The removal of curb and gutter will be measured by the Linear Foot and shall include the full removal of the concrete curb, concrete gutter and at locations with monolithic gutter, the small removal areas of the concrete pavement to the nearest joint. The offsite disposal of concrete and other removed materials shall not be paid for separately but shall be included in the work.

The removal of pedestal pole will be measured by the Each and shall include the full removal of the pole, signal head, attached hardware and foundations to 2 feet below finished grade, as directed by the Engineer. The offsite disposal of removed materials shall not be paid for separately but shall be included in the work.

The removal of fence will be measured by the Linear Foot and shall include the full removal of the fence, posts and post foundations as directed by the Engineer. The offsite disposal of removed materials shall not be paid for separately but shall be included in the work.

The removal of guardrail Type 3 will be measured by the Linear Foot and shall include the full removal of the guardrail, posts, and post foundations as directed by the Engineer. The offsite disposal of removed materials shall not be paid for separately but shall be included in the work.

The removal of end anchorage will be measured by the Each and shall include the full removal of the guardrail, posts, post foundations and thrust blocks as directed by the Engineer. The offsite disposal of removed materials shall not be paid for separately but shall be included in the work.

Subsection 202.12 shall include the following:

Payment will be made under:

Pay Item Pay Unit Removal of Structure Each Removal of Pipe Linear Foot Removal of Sidewalk Square Yard Removal of Concrete Pavement Square Yard Removal of Curb and Gutter Linear Foot Removal of Concrete Curb Ramp Square Yard Removal of Pedestal Pole Each Removal of Fence Linear Foot Removal of Guardrail Type 3 Linear Foot Removal of End Anchorage Each

REMOVAL AND TRIMMING OF TREES

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

Subsection 202.02 shall include the following:

This work includes the removal and the trimming of trees as directed by the Engineer. This work includes the preservation from injury or defacement of all vegetation and objects designated to remain.

The Engineer will establish environmental limits. All trees, shrubs, plants, grasses, and other vegetative materials shall remain, except as designated by the Engineer.

Prior to beginning any construction, removal, trimming, and pruning of encroaching vegetation (as determined by the Engineer) shall be completed.

Once all directed clearing, trimming, and pruning is completed and accepted, no additional clearing, trimming, cutting, or pruning will be allowed unless approved, in writing, by the Engineer.

This work shall be done by a Contractor or subcontractor who is a qualified tree surgeon and a member of the National Arborist Association. The firm's or individual's name and qualifications shall be submitted at the preconstruction conference for the Engineer's approval. A list of references and other clients shall be included with the qualifications statement. A written description of work methods and time schedules shall be submitted and approved in writing by the Engineer prior to work commencing.

Access for the removal or pruning of trees will be extremely limited. Trees shall be felled at the risk of the Contractor. Strict limits of disturbance will be defined and shall be adhered to.

Branches on trees or shrubs shall be removed as directed by the Engineer. All trimming shall be done by skilled workmen. All work shall be done according to the following requirements:

(1) Pruning shall be done with proper, sharp, clean tools in such a manner as to preserve the natural character of the tree.

(2) All final cuts shall leave no projections on or off the branch and shall not be cut so close as to eliminate the branch collar.

(3) To avoid bark stripping, all branches 2 inches in diameter and larger shall be cut using the 3-cut method. These branches shall be lowered to the ground by proper ropes.

REMOVAL AND TRIMMING OF TREES

(4) Tools used on trees known or found to be diseased, shall be disinfected with alcohol before they are used on other trees.

(5) Structural weaknesses, decayed trunk or branches, or split crotches shall be reported to the Engineer.

(6) When cutting back or topping trees, the Contractor shall use the drop-crotch method and avoid cutting back to small suckers. Smaller limbs and twigs shall be removed in such a manner so as to leave the foliage pattern evenly distributed.

(7) When reducing size (cut back or topping) not more than one-third of the total area shall be reduced at a single operation.

(8) Climbing spikes shall not be used on trees not scheduled for removal.

Stumps shall be left no higher than 2 feet above the ground surface and shall not be removed when within the areas to be excavated. When trees being cut off are outside the excavation limits, the stumps shall be cut so that no more than 3 inches remains above the ground surface. Stump grinding is not required in any circumstances.

Removal of Russian Olive trees within the project area, will require application of Rodeo to the stump at full strength within 5 minutes of the tree being cut. Refer to noxious weed measures in section 2.52.

Subsection 202.11 shall include the following:

Tree Trimming shall be paid for by the hour and shall only be for the removing of designated branches larger than two inches in diameter. Trimming of branches smaller than two inches shall be included as part of the clearing and grubbing work.

Trees with trunks larger than 3 inches and are marked for removal, shall be paid for as Removal of Tree (Each). Removal of trees less than 3 inches in diameter will not be paid for separately but shall be included in the clearing and grubbing work.

REMOVAL AND TRIMMING OF TREES

Subsection 202.12 shall include the following:

Tree Trimming Hour Removal of Tree Each

Chipping, stockpiling mulch, and hauling and stockpiling trunks and limbs will not be paid for separately but shall be included in the work.

REMOVAL OF ASPHALT MAT

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

Subsection 202.01 shall include the following:

This work includes removal and disposal of existing asphalt mat within the project limits as shown on the plans or at locations directed by the Engineer.

In subsection 202.02 delete the seventh paragraph and replace with the following:

The existing asphalt mat which varies in thickness from 4 inches to 8 inches shall be removed in a manner that minimizes contamination of the removed mat with underlying material.

The removed mat shall become the property of the Contractor and shall be either disposed of outside the project site, or with the Engineers approval, used in one or more of the following ways:

1. Recycled into the hot mix asphalt.

2. Placed in the subgrade soft spots as directed by the Engineer.

Subsection 202.11 shall include the following:

The removal of the existing asphalt mat will be measured by the square yard of mat removed to the required depth and accepted.

Subsection 202.12 shall include the following:

Payment will be made under:

Pay Item Pay Unit Removal of Asphalt Mat Square Yard

Unless otherwise specified in the Contract, the disposal of the asphalt mat or its use in other locations on the project will not be measured and paid for separately, but shall be included in the work.

REVISION OF SECTION 208

EROSION CONTROL

Section 208 of the Standard Specification is hereby revised as follows:

Subsection 208.02(i) shall include the following:

All erosion logs shall be biodegradable unless otherwise approved by the Engineer.

Photodegradable will not be accepted.

Subsection 208.02 (m) shall include the following:

Prior to the initial arrival onto the project site, all equipment shall be thoroughly power washed, including the undercarriages and tires. Equipment must be clean of mud, vegetative matter, and other debris to prevent importation of non-native and noxious weed seeds from other project sites.

Subsection 208.12 shall include the following:

Erosion Log Type 3 (12 Inch) Linear Foot Storm Drain Inlet Protection (Type I) (84 Inch) Each

REVISION OF SECTION 209

DUST PALLIATIVES

Section 209 of the Standard Specifications is hereby revised as follows:

Subsection 209.05 shall include the following:

The contractor shall be responsible for controlling vehicle and equipment speeds of contractor vehicles within the project site to keep dust to a minimum. The Contractor shall monitor activities daily for dust. If excessive dust is being generated by construction speeding vehicles or equipment, the contractor shall immediately take corrective action to ensure operators and drivers control speeds, thereby, assisting in the watering dust suppression.

REVISION OF SECTION 210

RESET UTILITY SECONDARY SERVICE PEDESTAL

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

Subsection 210.01 shall include the following:

During construction, the contractor is to relocate the privately owned power meters around Station 139+60 and move the power meters South behind the existing fence.

Subsection 210.02 shall include the following:

The contractor is required to hire a certified electrician to move the power meters. The contractor is to coordinate with the property owner to determine the desired location of the reset power meters. The proposed locations would be either just South of the existing fence or at the right-of-way line. The contractor is to coordinate with Xcel Energy (Electric) to accomplish the relocation.

Subsection 210.12 shall include the following:

The quantity of “Reset Utility Secondary Service Pedestal” shall be measured by the each and shall include the relocation of the power meter support, both power meters, conduit, wiring, coordination and any other materials, equipment or work necessary to complete the relocation of functioning power meters.

Subsection 210.13 shall include the following:

Reset Utility Secondary Service Pedestal Each

REVISION OF SECTION 240

PROTECTION OF MIGRATORY BIRDS

BIOLOGICAL WORK PERFORMED BY THE CONTRACTOR’S BIOLOGIST

Add Section 240 to the Standard Specifications for this project as follows:

DESCRIPTION

240.01 This work consists of protecting migratory birds during construction.

MATERIALS AND CONSTRUCTION REQUIREMENTS

240.02 The Contractor shall schedule 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 protected by the Migratory Bird Treaty Act (MBTA). The Contractor shall retain a qualified wildlife biologist for this project. 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 biologist's 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.

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 shall be submitted to the Engineer.

(a) Vegetation Removal. When possible, vegetation shall be cleared before 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 within the work limits for active migratory bird nests. The Contractor's wildlife biologist shall also survey for active migratory bird nests within 50 feet outside work limits.

Contractor personnel shall enter areas outside CDOT right of way 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 active 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 before the beginning of work in each area of tree and shrub removal or trimming. The survey shall be conducted for each phase of tree and shrub removal or trimming.

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 before 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 CDOT biologist. This buffer dimension may be changed if determined appropriate by the CDOT 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.

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REVISION OF SECTION 240

(c) Taking of a Migratory Bird. 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 measured by the actual authorized number of hours a wildlife biologist is on site performing the required tasks.

Removal of nests and netting will not be measured separately and shall be included as a part of the Wildlife Biologist work.

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.

Wildlife Biologist Hour

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

Clearing and grubbing will be measured and paid for per Section 201. Mowing will not be measured and paid for separately but shall be included in the work.

Removal and trimming of trees will be measured and paid for per Section 202.

Fence (Plastic) will be measured and paid for per Section 607

BLACK-TAILED PRAIRIE DOG MANAGEMENT

Section 240 of the Standard Specification is hereby added to this project as follows:

240.01 This work consists of passive relocation, of Black Tailed Prairie Dog (BTPD) within the limits or project disturbance.

240.02 The Contractor shall furnish all material and equipment of sufficient type and size to complete the BTPD management.

240.03 The Contractor shall perform the appropriate work at locations as shown on the Plans:

Prairie dog management on City of Boulder Open Space and Mountain Parks lands requires special considerations. Any removal or relocation of prairie dogs in the project area shall be coordinated with the City of Boulder and meet guidance by the City of Boulder wildlife protection ordinance, urban wildlife management plan, and the grassland ecosystem management plan. OSMP staff will manage relocation of prairie dogs and work with the contractor to keep the work site operable, but relocations may require buffers to be observed within the area of disturbance until individual animals can be relocated.

Individual burrows may need up to 3’ buffer. The expense of working within these parameters is the sole responsibility of the contractor and should be included in the cost of the work. The limits of the disturbance and access to the site are considered as part of the project area. Any relocation of prairie dogs must occur outside of the breeding season of March 1-June 1. Prairie dog burrows should be flagged and avoided, and if they cannot be avoided, the contractor, with approval from OSMP wildlife staff, shall lay down duraplates to protect the burrow. When prairie dog pups are out (March 1-May 30), no work should be done in the area. If there are active burros in the construction area, late July to early October is the season for passive relocation. Temporary barriers will be needed for construction.

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BLACK-TAILED PRAIRIE DOG MANAGEMENT

240.04 Measurement and payment for Prairie Dog Management will not be measured but will be paid as a lump sum for all labor, materials, and equipment and permits required to complete the work.

Applying for and obtaining permits, hiring licensed specialists, trapping, parasite and disease management (including pesticides and other chemicals), and all other activities necessary to properly remove the BTPD not be measured and paid for separately, but shall be included in the work.

Partial payments for Prairie Dog management will be made according to the following schedule:

-50 percent of the bid amount will be paid on the first pay request that work associated with Prairie Dog Management is required for construction.

-When 50 percent of the original contract amount is earned, 75 percent of the bid amount will be paid

-100 percent of the bid amount will be paid on the final pay request upon request acceptance Payment will be made under:

Prairie Dog Management Lump Sum

REVISION OF SECTION 304

AGGREGATE BASE COURSE

Revise Section 304 of the Standard Specifications for this project as follows:

Subsection 304.02 shall include the following:

Materials for the subbase shall be Aggregate Base Course (Class 6) as shown in subsection 703.03.

Materials for the base course shall be Aggregate Base Course (Class 6) as shown in subsection 703.03.

The aggregate base course (Class 6) must meet the gradation requirements and have a resistance value of at least 78 when tested by the Hveem Stabilometer method.

COMPACTED CRUSHER FINES

Revise Section 304 of the Standard Specifications for this project as follows:

Subsection 304.01 shall include the following:

WORK INCLUDES

A. Placing and compacting crusher fines and fine grading finish work on designated destroyed sections of the trail.

B. Re-working, re-laying and/or adding crusher fines sections of the trail that have minor damage and/or vegetation growing in the tread then wetting, rolling and fine grading finish work on the edges.

C. Installing geotextile fabric on the designated destroyed trail sections.

QUALITY ASSURANCE

A. Engage experienced supervisors who have completed similar work in material, design, and extent to that indicated for this Project and with a record of successful installation.

B. Sieve analysis and color of crusher fines shall be approved in writing by Boulder

County prior to delivery of any material to the project site or designated stockpile locations.

SUBMITTALS

A. The Contractor shall submit to BCPOS, manufacturer’s information and certification that all materials conform to materials specifications for the following bid items before confirmation of orders:

1. Crusher Fines:

a. Submit sieve analysis of material to ensure it meets grading requirements.

b. Submit sample of crusher fines for approval; quart or gallon size bag.

COMPACTED CRUSHER FINES

Subsection 304.02 shall include the following:

CRUSHER FINES

A. Crusher fines shall be 6” Min Depth of 3/8” screened Gold Breeze with stabilizer. See City of Boulder Crusher Fines Paving standard detail. The supplier of Gold Breeze is “Golf and Sport” or approved equal.

B. Crusher fines material shall be gold in color, to match the adjacent Cottonwood Trail, and meet the grading requirements shown in the following table.

SIEVE SIZE % PASSING

3/8” 100 #4 90-100 #8 55-80 #16 40-70 #30 20-50 #200 6-15

GEOTEXTILE FABRIC

A. Mirafi 140 NS or approved similar material that is 3.5 ounces per square yard.

B. Width of geotextile fabric shall match the specified trail width.

WATER

A. Water to be used to obtain optimum moisture content for compaction shall be clean from sand, oil, acid, alkali, organic matter or other deleterious substances.

B. Water from public supplies or which has proven to be suitable for drinking is satisfactory.

C. Water shall be provided by contractor.

COMPACTED CRUSHER FINES

DELIVERY, STORAGE, AND HANDLING

A. Protect all materials from damage by wind, weather, or excessive moisture during delivery and while stored.

B. Keep geotextile fabric in a location protected from prolonged sun exposure.

C. Stockpile and store delivered material in locations approved by the County and as depicted in the project drawings.

Subsection 304.04 shall include the following:

LAYOUT OF WORK

A. Layout the crusher fines trails shown on the detailed plans according to the drawings.

B. The Contractor is responsible for layout of the trails on the detailed plans and will get approval by the County before proceeding with construction.

SUBGRADE PREPARATION

A. Prepare the subgrade in accordance with plans.

B. Wet and compact the subgrade to obtain a firm, uniform, compacted subgrade. Keep the cut sides vertical and true to line horizontally and vertically.

PREPARATION OF SURFACE TO RECEIVE CRUSHER FINES

A. Cut and remove woody or herbaceous vegetation within the trail area; haul debris…