Project_4_-_Parfet_Street_-_Project_Specifications.pdf

WR Project No. 025-029B, Project 4 May 19, 2026 100% Submittal

COLORADO DEPARTMENT OF TRANSPORTATION – SPECIAL PROVISIONS

PROJECT 4 – PARFET ST, 35TH AVE TO 3550 PARFET ST

SIDEWALK GAP PROGRAM

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 (May 19, 2026) 1 – 2 Commencement and Completion of Work (May 19, 2026) 3 Revision of Section 101 – Definition and Terms (May 19, 2026) 4 Revision of Section 102 – Project Plans and Other Data (May 19, 2026) 5 Revision of Section 105 – Order of Precedence (May 19, 2026) 6 Revision of Section 202 – Removal of Ditch Paving (May 19, 2026) 7 Revision of Section 202 – Clean Inlet (May 19, 2026) 8-9 Revision of Section 208 – Erosion Control (May 19, 2026) 10 Revision of Section 210 – Reset Riprap (May 19, 2026) 11 Revision of Section 210 – Reset Driveway Gravel (May 19, 2026) 12 Revision of Section 210 – Reset Fence (May 19, 2026) 13 Revision of Section 210 – Adjust Water Meter (May 19, 2026) 14 Revision of Section 212 – Landscape Restoration (May 19, 2026) 15-17 Revision of Section 213 – Rock Mulch (Weed Free) (May 19, 2026) 18 Revision of Section 403 – Hot Mix Asphalt (May 19, 2026) 19-21 Revision of Section 604 – Drain Basin (May 19, 2026) 22 Revision of Section 604 – WR Curb Inlet (May 19, 2026) 23 Revision of Section 608 – Concrete Curb Ramp (May 19, 2026) 24 Revision of Section 630 – Construction Traffic Control (May 19, 2026) 25-27 Force Account Items (May 19, 2026) 28 Utilities (May 19, 2026) 29-31

STANDARD SPECIAL PROVISIONS

Name Date

Pages

Revision of Sections 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 201 – Clearing and Grubbing (March 19, 2026) 3

Revision of Section 203 – Excavation and Embankment (March 19, 2026) 1

Revision of Sections 208 – Erosion Control (Under One Acre of Disturbance) (July 1, 2025) 36

Revision of Section 212 – Soil Amendments, Seeding, and

Sodding

(July 1, 2025)

Revision of Section 401 – Plant Mix Pavements – General

(Subsection 401.17) (July 1, 2025) 4

Revision of Section 601 – Pigment in Concrete (July 1, 2025) 1

Revision of Section 627 – Pavement Marking Paint (July 1, 2025) 15

Commencement and Completion of Work (Working or Calendar Day)

The Contractor shall commence work under the contract on or before the 5th day following the “Notice to Proceed” unless such time for beginning the work is changed by the City of Wheat Ridge in the “Notice to Proceed.” The Contractor shall complete all work within 30 working days per the "Notice to Proceed".

Revision of Section 101 Definitions and Terms

Revise Subsection 101.02 of the Standard Specifications for this project as follows:

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 follows:

“Department” shall mean the City of Wheat Ridge or their designated representative.

“Engineer” shall mean the City of Wheat Ridge or their designated representative.

“Laboratory” shall mean the City of Wheat Ridge or their designated representative.

“Project Engineer” shall mean the City of Wheat Ridge or their designated representative.

“Region Transportation Director” shall mean the City of Wheat Ridge or their designated representative.

“State” shall mean the City of Wheat Ridge or their designated representative.

Revision of Section 102 Project Plans and Other Data

Revise Section 102 of the Standard Specifications for this project as follows:

Subsection 102.05 shall include the following:

Supplemental data is provided in LandXML and DWG file formats upon request from the City to the successful bidder. The supplemental data transmitted consists of:

a) Project Alignments - LandXML file generated of all alignments.

b) Surfaces – LandXML files of the following:

1) Existing Surface

2) Finished Grade Surface

c) DWG files:

1) Project Design Model

2) Right of Way

3) Topography

4) Additional files include – Discipline Design Files

5) Other Files – As needed per project.

The City does not warrant the supplemental data, and this information is not considered to be a part of the Contract. If the successful bidder uses or modifies the supplemental data in preparing a proposal or planning and prosecuting the work, all associated data is used at their own risk, and the bidder is responsible for all conclusions, deductions, and inferences drawn from the original or modified supplemental data.

Revision of Section 105 Order of Precedence

Revise Section 105 of the Standard Specifications for this project as follows:

Subsection 105.09 shall include the following:

These specifications, the supplemental specifications, the plans, special provisions, and all supplementary documents are essential parts of the Contract, and a requirement occurring in one is as binding as though occurring in all. They are intended to be complementary and to describe and provide for complete work.

In case of discrepancy the order of precedence is as follows:

a) Contract and City of Wheat Ridge General Conditions

b) Special Provisions

1) Project Special Provisions

2) Standard Special Provisions

c) Plans

1) Detailed Plans

2) Standard Plans and Details

3) Calculated dimensions will govern over scaled dimensions.

d) Standard Specifications

Revision of Section 202 Removal of Ditch Paving

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

Subsection 202.02 shall include the following:

This work includes the removal and disposal of existing concrete ditch paving at the locations shown on the plans or as directed by the Engineer. The cavity or trench resulting from the removal of concrete ditch paving shall be backfilled with suitable material and compacted to per Section 203.07.

Subsection 202.11 shall include the following:

Removal of Ditch Paving will be measured by the square yard, completed, and accepted, based on horizontal surface area.

Subsection 202.12 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Removal of Ditch Paving Square Yard

Payment for Removal of Ditch Paving will be full compensation for all labor, materials, and equipment necessary to complete the work, including removal, disposal, and backfilling.

Removal of reinforcing steel, aggregate base material, and headwalls within the limits shown on the plans will not be measured and paid for separately but shall be included in the work.

Clean Inlet

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

Subsection 202.01 shall include the following:

This work consists of cleaning, removing, and disposing of sediment and other debris in the storm drain inlets at locations shown on the plans.

Subsection 202.10 shall include the following:

Before cleaning operations, remove and store all grates and other appurtenances from the inlet.

Perform inlet cleaning using a vacuum truck method as approved. Use a high-pressure washer to strip off all soil sediment and other debris accumulated on the structure’s walls.

Suction the mix of water and debris out of the structure and into the vacuum truck. Dispose of removed material at a suitable facility located off the project site per applicable regulations and guidelines. The remaining material left in the structure after cleaning shall be removed at the Contractor’s expense. Document and provide in writing the total amount of material removed.

Replace all damaged or missing bolts for the grates and other appurtenances. Upon completing cleaning, treat existing and new bolts required for the grates and other appurtenances with anti-seize compound. Then, reinstall the grate and appurtenances using the treated bolts.

If debris accumulates in clean structures during construction, reclean structures at the Contractor’s expense.

Subsection 202.11 shall include the following:

Measure Clean Inlet by the actual number of existing inlets that are cleaned and accepted.

Cleaning of drainage pipe between inlets, barrier drain holes, and flaps, when required, will not be measured or paid for separately; include it in the work price.

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Clean Inlet

Subsection 202.12 shall include the following:

Pay under:

Pay Item Pay Unit

Clean Inlet Each

Payment will consist of full compensation for all labor, materials, and equipment required to clean, maintain, remove, and dispose of sediment and other debris from storm drain inlets prior to construction.

The amount of anti-seize compound and new bolts required will not be measured and paid for separately; include it in the work price.

The quantity of debris and water disposal will not be measured and paid for separately;

include it in the work price.

The amount of water required for pressure washing will not be measured and paid for separately; include it in the work price.

Revision of Section 208 Erosion Control

Revise Section 208 of the Standard Specifications for this project as follows:

Subsection 208.01 shall include the following:

The City of Wheat Ridge Stormwater Quality and Control Ordinance shall govern erosion control procedures. Temporary erosion control measure materials and construction requirements shall be adhere to the specifications detailed in Mile High Flood District’s Urban Storm Drainage Criteria Manual. In instances where the Ordinance or Manual does not provide specific guidance, CDOT Standard Specification Section 208 shall be used as a supplemental reference.

Revision of Section 210 Reset Riprap

Revise Section 210 of the Standard Specifications for this project as follows:

Subsection 210.01 shall include the following:

This work consists of removing, stockpiling, and relaying existing riprap to the lines and grades shown in the plans or as directed by the Engineer.

Subsection 210.02 shall include the following:

The Contractor shall exercise care during removal, handling, and storage. Riprap shall be stockpiled at a location approved by the Engineer in a manner that prevents contamination or mixing with other materials. Riprap damaged due to Contractor operations shall be replaced to match the existing dimensions and color. Placing and replacing riprap shall be in accordance with Section 506.

Subsection 202.12 shall include the following:

Reset Riprap will be measured by the square yard of riprap reset in its final position, completed and accepted.

Subsection 202.13 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Reset Riprap Square Yard

Payment will consist of full compensation for all labor, materials, and equipment required to remove, stockpile, and reset riprap in accordance with the plans and these specifications.

Any existing riprap shown on the plans for removal and not reset shall be disposed of by the Contractor at no additional cost.

Reset Driveway Gravel

Revise Section 210 of the Standard Specifications for this project as follows:

Subsection 210.01 shall include the following:

This work consists of removing, stockpiling, and placing Driveway Gravel in areas indicated on the plans or as designated by the Engineer.

Subsection 210.02 shall include the following:

The Contractor shall exercise care during removal to avoid loss, contamination, or damage to the existing gravel. Existing gravel shall be stockpiled at a location approved by the Engineer in a manner that prevents contamination or mixing with other materials.

Where additional material is required, the Contractor shall procure gravel that visually matches the existing adjacent gravel in type, color, and size. The Contractor shall submit a physical sample of the gravel to the City for review and approval prior to use on site.

Gravel shall be placed in accordance with the plans. Any disturbed or contaminated areas shall be reworked at the Contractor’s expense.

Subsection 210.12 shall include the following:

Reset Driveway Gravel will be measured by the square foot installed and accepted.

Subsection 210.13 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Reset Driveway Gravel Square Foot

Reset Fence

Revise Section 210 of the Standard Specifications for this project as follows:

Subsection 210.01 shall include the following:

This work consists of removing and resetting existing fence and posts at the locations shown on the plans. This work also includes removing existing concrete post footings, installing new concrete post footings, replacing materials determined to be unserviceable, and repainting surfaces damaged during reset operations.

Subsection 210.02 shall include the following:

Materials determined by the Engineer to be unserviceable prior to resetting shall be replaced in kind. All replacement materials shall match the existing material in type, size, and finish.

Subsection 210.12 shall include the following:

The Contractor shall remove and stockpile all fence components in a manner that prevents damage. Existing concrete post footings shall be removed and disposed of. Voids resulting from footing removal shall be backfilled and compacted per Section 206.

Fence and post installation shall conform to Section 607.

Posts that were installed in concrete footings in the existing condition shall be reset in new concrete footings. Top of concrete footings shall be flush with finished grade. Where concrete footings do not exist, posts shall be driven into the ground. All posts shall be able to fully support the fence and shall be set plumb.

After the fence is fully reset, the Contractor shall repaint all surfaces on which paint was damaged during removal or reset operations, as directed by the Engineer. Paint shall match the color and finish of undamaged fence materials and shall be applied to achieve a uniform coat free of blemishes, discontinuities, or bare edges. Repainting is not required for undamaged surfaces.

Subsection 210.13 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Reset Fence Linear Foot

Payment will be full compensation for all labor, materials, and equipment required to complete the reset, including footing removal, new footings, material replacement, and repainting.

Adjust Water Meter

Revise Section 210 of the Standard Specifications for this project as follows:

Subsection 210.10 shall include the following:

This work consists of adjusting the existing water meter pits to finished grade at the locations shown on the plans or as directed by the Engineer. Adjustment is limited to raising or lowering the meter pit flush with finished grade. The water meter, service lines, and all other components of the water service shall not be disturbed. The Contractor shall coordinate with Consolidated Mutual Water Company prior to commencing work to determine grade adjustment material and construction requirements.

Revision of Section 212 Landscape Restoration

Revise Section 212 of the Standard Specifications for this project as follows:

Subsection 212.01 shall include the following:

This work consists of furnishing all labor, materials, equipment, and services necessary to protect or restore landscaped areas to their pre-project condition at the conclusion of construction.

Landscape restoration shall include protecting, resetting, or replacing plants, grasses, rock and wood mulch, landscape rock, lawn furnishings, boulders, landscape edging, and similar improvements. This work shall include the protection of trees and shrubs, trimming of plants damaged by the Contractor's operations, and replacement of seriously damaged vegetation.

Additionally, this work shall consist of salvaging, stockpiling, maintaining, and placing existing topsoil at seeded areas shown on the plans.

This work shall also include protecting, adjusting, extending, and repairing existing irrigation systems to restore irrigation systems to irrigate grass areas and plantings, resetting or replacing irrigation boxes and sprinkler heads, and capping irrigation lines, where required.

All irrigation work shall conform to Section 623.

The Contractor is to coordinate with the private property owner prior to commencing ground disturbing activities to coordinate approach to landscape restoration and schedule outages, if applicable. Documentation of the coordination and of the existing conditions through photographs and written inventory shall be submitted to the Engineer prior to beginning work.

Subsection 212.02 shall include the following:

(a) Seed. Seed shall match the pre-existing species within the area of disturbance. The Contractor shall conduct a field investigation to identify existing species prior to any ground-disturbing activity and shall submit a proposed seed mix to the Engineer for written approval prior to seeding. If pre-existing species cannot be determined through field investigation, the Contractor shall submit an alternative seed mix proposal to the Engineer for written approval prior to seeding. Seed shall be free of noxious weeds

(b) Soil Amendments and Fertilizers. The Contract shall select applicable topsoil amendments and fertilizers promote growth of seeded areas.

Landscape Restoration

Subsection 212.04 shall include the following:

The Contractor shall place salvaged topsoil at areas designated for seeding in conformance with Section 207. The Contractor shall incorporate soil amendments into the topsoil to a minimum depth of 6 inches.

Seeded areas shall achieve a minimum uniform vegetative cover of 70 percent plant density relative to adjacent undisturbed seeded areas within 12 months of initial seeding. The Engineer will determine whether the 70 percent establishment threshold has been achieved prior to final acceptance. The Contractor shall reseed and re-amend areas failing to achieve this threshold at no additional cost.

Add subsection 212.061 immediately following subsection 212.06 as follows:

(a) Lawn Furnishings. Existing lawn furnishings, including edging, borders, and decorative features, shall be carefully removed, stockpiled, and protected from damage. Care shall be taken to not damage landscape materials during removal. Furnishings shall be reset in their original configuration, or as directed by the property owner, upon completion of adjacent construction. Items damaged during Contractor operations shall be replaced in kind at the Contractor's expense.

(b) Plants. If plants are damaged as identified by the Engineer, the Contractor shall replace in kind at no additional cost to the project.

(c) Landscape Rock. If rock is damaged or contaminated as identified by the Engineer, the Contractor shall replace in kind at no additional cost to the project.

(d) Rock and Wood Mulch. Existing mulch within the limits of disturbance shall be removed, stockpiled, and protected from contamination and loss prior to construction. Care shall be taken to separate rock mulch from subgrade soils during removal. Following completion of adjacent construction, rock mulch shall be reset to match the pre-existing depth, color, gradation, and type within the disturbed area.

Mulch that is contaminated, lost, or damaged during the Contractor's operations shall be replaced in kind at no additional cost. Any disturbed or contaminated areas shall be reworked and remulched at the Contractor's expense.

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Landscape Restoration

Subsection 212.07 shall include the following:

Landscape Restoration will be paid for on a lump sum basis for the entire project.

Subsection 212.08 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Landscape Restoration Lump Sum

Payment will consist of full compensation for all labor, materials, and equipment required to restore landscape areas and re-establish irrigation systems.

Topsoil, subsoil preparation, soil amendments, and fertilizers for seeded areas will not be measured and paid for separately but shall be included in the work.

If irrigation systems are impacted, temporary irrigation required while irrigation systems are offline will not be paid separately but is included in the cost of the work. If irrigation system shut off during construction results in damage to additional grass or landscape areas beyond the limits of disturbance, contractor shall replace in kind. This work shall be incidental to the cost of Landscape Restoration.

All tests, documentation, and surveys required for the work will not be measured and paid for separately but shall be included in the work.

Revision of Section 213 Rock Mulch (Weed Free)

Revise Section 213 of the Standard Specifications for this project as follows:

Subsection 213.01 shall include the following:

This work consists of removing, stockpiling, and placing Rock Mulch (Weed Free) in areas indicated on the plans or as designated by the Engineer. Where existing quantities are insufficient to complete the work, additional rock mulch shall be furnished to match adjacent areas.

Subsection 213.02 shall include the following:

Rock mulch shall be certified weed free, free of organic matter, soil, and other deleterious substances. Rock shall be clean, durable, and resistant to weathering and disintegration.

Where additional material is required, the Contractor shall procure rock mulch that visually matches the existing adjacent rock mulch in type, color, and size. The Contractor shall submit a physical sample of the rock mulch to the City for review and approval prior to use on site.

Subsection 213.03 shall include the following:

The Contractor shall exercise care during removal to avoid loss, contamination, or damage to the existing rock mulch. Existing rock mulch shall be stockpiled at a location approved by the Engineer in a manner that prevents contamination or mixing with other materials.

Rock mulch shall be placed to a minimum depth of 3 inches after compaction and leveling.

The finished surface of the mulch shall be depressed 2 inches below adjacent curbs, sidewalks, and hardscape edges to prevent migration. The Contractor shall ensure that the mulch is evenly distributed and compacted to prevent settling and displacement. Any disturbed or contaminated areas shall be reworked and remulched at the Contractor’s expense.

Subsection 213.04 shall include the following:

Rock Mulch (Weed Free) will be measured by the square foot installed and accepted.

Subsection 213.05 shall include the following:

Payment will be made under:

Rock Mulch (Weed Free) Square Foot

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

Patching

SX (75) S (75)

Air Voids, percent at:

N (design)

CPL 5115 3.5 – 4.5 3.5 – 4.5

Lab Compaction (Revolutions):

N (design)

CPL 5115 75 75

Stability, minimum CPL 5106 28 28

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 90

Accelerated Moisture Susceptibility Tensile Strength Ratio (Lottman), minimum

CPL 5109

Method B

80 80

Minimum Dry Split Tensile Strength, kPa (psi)

CPL 5109

Method B

205 (30) 205 (30)

Grade of Asphalt Cement, All Layers PG 64-22 PG 64-22

Voids in the Mineral Aggregate (VMA) % minimum

CP 48

See Table

403-2 See Table

403-2

Voids Filled with Asphalt (VFA), % AI MS-2 65 - 80 65 - 80

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

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.

Hot Mix Asphalt

All mix designs shall be run with a gyratory compaction angle of 1.25 degrees and properties must satisfy Table 403-1. Form 43 will establish construction targets for Asphalt Cement and all mix properties at Air Voids up to 1.0 percent below the mix design optimum. CDOT will establish the production asphalt cement and volumetric targets based on the Contractor’s mix design and the relationships shown between the hot mix asphalt mixture volumetric properties and asphalt cement contents on the Form 429. CDOT may select a different AC content other than the one shown at optimum on the Contractor’s mix design in order to establish the production targets as contained on the Form 43. Historically, Air Voids adjustments typically result in asphalt cement increases from 0.1 to 0.5 percent.

Contractors bidding the project should anticipate this change and factor it into their unit price bid.

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 N/A

4.75 (No. 4) 16.6 16.7 16.8 16.9

* The Nominal Maximum Size is defined as one sieve larger than the first sieve to retain more than 10%.

** Interpolate specified VMA values for design air voids between those listed.

*** Extrapolate specified VMA values for production air voids beyond those listed.

Hot Mix Asphalt

The Contractor shall prepare a quality control plan outlining the steps taken to minimize segregation of HMA. This plan shall be submitted to the Engineer and approved before beginning the paving operations. When the Engineer determines that segregation is unacceptable, the paving shall stop and the cause of segregation shall be corrected before paving operations will be allowed to resume.

Hot mix asphalt for patching shall conform to the gradation requirements for Hot Mix Asphalt (Grading SX and S).

Acceptance samples shall be taken CP 41 Method B.

Delete subsection 403.05 and replace with the following:

403.05 The accepted quantities of hot mix asphalt will be paid for per subsection 401.22, at the contract unit price per ton for the bituminous mixture.

Payment will be made under:

Hot Mix Asphalt (Patching)(Asphalt) Ton

Aggregate, asphalt recycling agent, asphalt cement, additives, hydrated lime, and all other work and materials necessary to complete each hot mix asphalt item will not be paid for separately but shall be included in the unit price bid. When the pay item includes the PG binder grade, any change to the submitted mix design optimum asphalt cement content to establish production targets on the Form 43 will not be measured and paid for separately but shall be included in the work. No additional compensation will be considered or paid for any additional asphalt cement, plant modifications and additional personnel required to produce the HMA as a result in a change to the mix design asphalt cement content.

Historically, typical asphalt cement increases reflected on the Form 43 are from 0.1 to 0.5 percent. However, the Contractor should anticipate the AC increases typical of his mixes.

Contractors bidding the project should anticipate this change and factor it into their unit price bid.

When the pay item does not include the PG binder grade, asphalt cement will be measured and paid for per Section 411. Asphalt cement used in Hot Mix Asphalt (Patching) will not be measured and paid for separately but shall be included in the work.

Excavation, preparation, and tack coat of areas to be patched will not be measured and paid for separately but shall be included in the work.

Revision of Section 604 Drain Basin

Revise Section 604 of the Standard Specifications for this project as follows:

Subsection 604.01 shall include the following:

The work consists of furnishing and installing a 15 Inch Drain Basin with a Pedestrian Grate in accordance with the plans.

Subsection 604.02 shall include the following:

Drain Basin and ancillary components shall comply with the manufacturer's specifications and dimensions shown in the plans.

Contractor may elect to install ADS Nyloplast 15” Drain Basin with a Dome Grate or approved equal. Shop drawings shall be provided to the Engineer for review and approval prior to fabrication.

Subsection 604.04 shall include the following:

Drain Basin shall be installed per the manufacturer's recommendations and the details shown in the plans. Installation shall include all ancillary components necessary for full functionality.

Subsection 604.06 shall include the following:

Drain Basin will be measured by the actual number of basins installed and accepted.

Subsection 604.07 shall include the following:

Payment will be made under:

Pay Item Pay Unit

15 Inch Drain Basin with Pedestrian Grate Each

Payment will consist of full compensation for all labor, materials, and equipment required to construct the Drain Basin as shown in the plans. Payment includes the pedestrian grate, frame, all adapters and hardware, excavation, subgrade preparation, backfill, compaction, and all appurtenant work necessary to complete the item. Structure excavation and structure backfill will not be measured and paid for separately but shall be included in the work.

Revision of Section 604 WR Curb Inlet

Revise Section 604 of the Standard Specifications for this project as follows:

Subsection 604.01 shall include the following:

This work consists of the construction of WR Curb Inlet per the City of Wheat Ridge Standard Detail U-C01 and U-C02.

WR = Wheat Ridge

Subsection 604.06 shall include the following:

Depth will not be measured for payment for WR Curb Inlet.

Subsection 604.07 shall include the following:

Payment will be made under:

Pay Item Pay Unit

WR Curb Inlet (Single) Each WR Curb Inlet (Double) Each

Revision of Section 608 Concrete Curb Ramp

Revise Section 608 of the Standard Specifications for this project as follows:

Subsection 608.01 shall include the following:

This work includes the installation of detectable warnings on concrete curb ramps as shown on the plans.

Subsection 608.02 shall include the following:

Detectable warnings on curb ramps shall be truncated domes of the dimensions shown on the plans or on Standard Plan M-608-1 Curb Ramps.

The final surface shall meet the requirements given in R305 of the PROWAG. The domes and their underlying surface shall contrast visually with adjacent gutter, street or highway, or pedestrian access route surface, either light-on-dark or dark-on light, per R305.1.3 of the PROWAG. The contrasting colors shall not be black and white.

Material for the truncated domes shall be cast iron embeddable surface plates. The domes shall be prefabricated by the manufacturer as a pattern on embeddable surface plates.

Plates shall be one of the cast iron plates allowed for use as detectable warnings listed on CDOT’s Approved Products List. Prior to the start of work, the Contractor shall submit appropriate documentation from the manufacturer verifying that the required contrast has been met, along with a sample plate to the Engineer for approval.

Subsection 608.03 shall include the following:

Prior to installation of the plates, concrete conforming to subsection 608.02 shall be installed and consolidated as a base for the plates. The concrete shall be placed to a thickness that will allow the base surface of the plates to be at the same elevation as the adjacent concrete. The plates shall be embedded into the plastic concrete in accordance with the manufacturer’s specifications.

Subsection 608.05 shall include the following:

Detectable warnings on curb ramps, including sand, plates, and all other work and materials necessary for fabrication, transport, and installation will not be measured and paid for separately, but shall be included in the work.

Subsection 608.06 shall include the following:

Payment will be made under:

Concrete Curb Ramp Square Yard

Revision of Section 630 Construction Traffic Control

Revise Section 630 of the Standard Specifications for this project as follows:

Subsection 630.02 shall include the following:

All traffic control devices shall conform to the most recent version of the Manual on Uniform Traffic Control Devices (MUTCD), the Colorado Supplemental MUTCD and all applicable specifications and illustrations in the CDOT M & S Standards. The Contractor installing signing is responsible for scheduling and providing utility locates, identifying conflicts and protecting all existing utilities.

Subsection 630.10 shall include the following:

The components of the TCP for this project are included in the following:

(1) Manual of Uniform Traffic Control Devices (MUTCD).

(2) Section 630 of the Specifications

(3) Standard Plan S-630-1, Traffic Controls for Highway Construction, and Standard

Plan S-630-2

Unless otherwise approved by the Engineer, the Contractor’s equipment shall follow normal and legal traffic movements. The Contractor’s ingress and egress of the work area shall be accomplished with as little disruption to traffic as possible. Traffic control devices shall be removed by picking up the devices in a reverse sequence to that used for installation. This may require moving backwards through the work zone. When located behind barrier or at other locations shown on approved traffic control plans, equipment may operate in a direction opposite to adjacent traffic.

The Contractor shall submit a detailed Traffic Control Plan including a Method for Handling Traffic (MHT) for each different phase of construction to the Engineer for approval by the City at least two weeks prior to the start of any construction phase or prior to any changes in traffic control.

Construction Traffic Control

Special Traffic Control Plan requirements for this project, in addition to those detailed in the plans, are as follows:

(a) The control of traffic through the construction area shall be the responsibility of the Contractor. The Contractor shall erect and maintain warning lights, signs, barricades, and provide sufficient safeguards around all excavations, embankments, and obstructions.

(b) The Contractor shall be responsible for assuring that traffic is directed through the Project with signs, barricades, and flag persons as necessary to protect the work and for the safety of the public. Traffic control shall be accomplished in accordance with the general conditions of the MUTCD published by the U.S. Department of Transportation and the Federal Highway Administration. The Contractor shall furnish, place and maintain all traffic control devices in the construction area.

(c) At least one week before starting construction, the Contractor shall notify the City of Wheat Ridge Engineer of the date the Contractor intends to start construction.

(d) The Contractor shall not have construction equipment or materials in the lanes open to traffic at any time, unless approved by the Engineer.

(e) Private driveway access shall be maintained at all times unless allowed by the

Engineer and coordinated with private properties a minimum of 72 hours prior to closures. In the case of an emergency, the Contractor shall respond to the resident or business and provide access immediately.

(f) All signs shall be mounted on their own post and not utilize existing structures of any kind. “No Parking” signs, where applicable, shall be placed not less than 24 hours in advance of any work, and shall state “No Parking 7:00 a.m. to 7:00 p.m.”

(g) The Contractor shall provide access for fire protection and other emergency vehicles at all times, 24 hours per day with no delays allowed.

Construction Traffic Control

(h) The Contractor shall maintain two-way traffic at all times in the areas under construction, where applicable. The Contractor shall provide flaggers and a Traffic Control Supervisor (TCS) with workable radios and back-up radios, available at all times during flagging operations. If the Contractor is working at more than one location within the Project limits at the same time, the Contractor shall provide adequate traffic control and/or flagging at each location in order to accommodate access to local businesses, emergency vehicles and school buses.

(i) When changing elevations at cross streets, the Contractor shall not change elevations exceeding 4 inches vertically at any one time.

(j) All traffic control signage shall be mounted on its own post per CDOT M & S Standards and not utilize existing structures of any kind.

Subsection 630.17 shall include the following:

No separate measurement and payment will be made for the following, but not limited to, items: construction traffic signs and posts, access roads, radios, mobile phones, telephones, Traffic Control Supervisor, Uniformed Traffic Control, shoring, temporary concrete barriers, vertical panels, batteries for flashers, drums, cones, delineators, barricades, supervision, pilot cars, detour signs and posts, pedestrian detours, pedestrian barricades, temporary culverts, additional earthwork for detours and all other miscellaneous labor, equipment and materials required to complete the Project.

The Contractor is responsible for making their own independent determination on the devices required to safely construct the project.

The City reserves the right to add additional requirements if conditions warrant.

Basis of Payment

Subsection 630.18 shall include the following:

Payment will be made under:

Pay Item Pay Unit

Flagging Hour Traffic Control Day

All costs incidental to the foregoing requirements shall be included in the original contract prices for the project.

Force Account Items

Description

This special provision contains the Department's estimate for force account items included in the Contract. The estimated amounts marked with an asterisk will be added to the total bid to determine the amount of the performance and payment bonds. Force Account work shall be performed as directed by the Engineer.

Basis of Payment

Payment will be made in accordance with subsection 109.04. Payment will constitute full compensation for all work necessary to complete the item.

Force account work valued at $5,000 or less, that must be performed by a licensed journeyman in order to comply with federal, state, or local codes, may be paid for after receipt of an itemized statement endorsed by the Contractor.

Estimated

Force Account Item Estimated Quantity Amount F/A Minor Contract Revisions F.A. $ 25,000.00 F/A Erosion Control F.A. $ 2,000.00

F/A Minor Contract Revisions – Consists of minor work authorized and approved by the Engineer, which is not included in the contract plans or specifications, and is necessary to accomplish the scope of work of this contract.

F/A Erosion Control – Supplemental erosion control measures suggested by the Erosion Control Supervisor but not provided for in the contract plans or specifications. All items shall be approved by the Engineer prior to installation, or they will be at no cost to the project.

Utilities Known utilities within the limits of this project are:

Utility Type Contact Address City of Wheat Ridge Storm Dan Klenjoski dklenjoski@wheatridge.gov

(303) 235-2868

11220 W 45th Avenue Wheat Ridge, CO 80033

Consolidated Mutual Water Company

Water Heather Young hyoung@cmwc.net Phone: (303) 274-7437

Westridge Sanitation Sanitary Gary Welp gwelp@rgengineers.com Phone: (303) 901-2447

4885 Ward Road, Suite 100 Wheat Ridge, CO 80033

Unknown Gas Unknown Unknown Google Fiber

Optic Jon Ramos jonathonr@google.com Hunter Barrett hjbarrett@google.com

Unknown

Additional utilities beyond those identified in the plans may be present within the project limits and were not located as part of the project design.

The work described in these plans and specifications requires full cooperation between the Contractor and the utility owners in accordance with Subsection 105.11 in conducting their respective operations, to complete the utility work with minimum delay to the project. All new underground facilities installed as part of this project must be electronically locatable when installed, in compliance with Colorado Revised Statutes, Title 9, Article 1.5.

The work listed below shall be performed by the Contractor per the plans and specifications, and as directed by the Engineer. The Contractor shall keep each utility company advised of any work being done to its facility, so that the utility company can coordinate its inspections for final acceptance of the work with the Engineer.

Part 1: Contractor Shall Perform the Work Listed below

Project Limits – All Utility Owners

Provide each utility owner with weekly updates to the schedule. Conduct detailed utility coordination meetings prior to each construction phase to coordinate all requirements and schedules, and provide other necessary accommodations as directed by the Engineer. Notify each utility owner in writing, with a copy to the Engineer, prior to the time each utility work element is to be performed by the utility owner. Provide the notice two (2) weeks in advance of the time the utility work must be begun to meet the project schedule or as specified in subsequent sections of these specifications with the latter governing.

Provide traffic control, as directed by the Engineer, for any utility work by the utility owner expected to be coordinated with construction. However, traffic control for utility work outside of typical project work hours shall be the responsibility of the utility owner.

Perform each utility work element for every utility owner listed here. The Contractor shall identity existing utilities (by potholing if necessary) and protect the existing buried utilities when constructing the project, including sub excavation work. If existing utilities are within close proximity horizontal or vertically, the Contractor shall alter the sub excavation work limits, construction methods, or equipment to avoid impacting the existing utilities.

Consolidated Mutual Water Company

Consolidated Mutual Water Company requires two (2) weeks of advanced notice prior to commencing work. The Contractor shall adjust existing water meters and valve boxes to grade as shown in the plans. All work to Consolidated Mutual Water Company facilities shall be completed according their standards and specifications.

City of Wheat Ridge

The Contractor shall perform all storm sewer related work as depicted in the plans.

Part 2: Utility Owners Shall Perform the Work Listed below

Google

Google requires two (2) weeks of advanced notice prior to commencing work. Google forces will relocate the existing pull box and associated underground fiber line approximately 5 feet east at station 102+10. This work shall occur during active construction to properly adjust the pull box within the sidewalk. The pull box lid shall be pedestrian rated and be flush with the adjacent sidewalk. Google forces will be responsible for additional excavation and backfill necessary to complete the work. After the pull box has been relocated, the Contractor shall protect the infrastructure in place throughout the duration of construction.

Contractor shall coordinate with Google to adjust the fiber optic line around the proposed storm improvements as needed.

General:

The Contractor shall comply with Article 1.5 of Title 9, CRS ("Excavation Requirements") when excavation or grading is planned in the area of underground utility facilities. The Contractor shall notify all affected utilities at least two (2) business days, not including the day of notification, before commencing such operations. The Contractor shall contact the Utility Notification Center of Colorado (UNCC) at (8-1-1) or 1-800-922-1987 to have locations of UNCC registered lines marked by member companies. All other underground facilities shall be located by contacting the respective company. Utility service laterals shall also be located before beginning excavating or grading.

The location of utility facilities as shown on the plan and profile sheets, and herein described, were obtained from the best available information.

All costs incidental to the foregoing requirements will not be paid for separately but shall be included in the work.