Attachment A - Specifications.pdf

Attachment A – Specifications

IFB-GC-RB-05-25

ATTACHMENT A

SPECIFICATIONS

IFB-GC-RB-05-25

2025 CHIPSEAL PROJECTS

In accordance with Article 5.2 of the Garfield County Procurement Code (“GCPC”), Garfield County is soliciting competitive sealed bids from qualified individuals or companies to perform the 2025 Chipseal Projects. All work shall be completed by August 31, 2025.

SEAL COAT SURFACING

(On existing pavement)

DESCRIPTION

Work shall consist of furnishing and applying bituminous and cover material (chips) on existing pavement. All work shall be completed by August 31, 2025. Excess materials can be stockpiled at the Road & Bridge Battlement Mesa shop and the Glenwood Road & Bridge shop.

MATERIALS

Bituminous Material The asphalt binder shall be CRS 2R or CRS 2P as an alternate to the specification in subsection

702.03 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022”. The specified binder shall be used for both 3/8” and 3/4” chips. A certified laboratory analysis shall be furnished to Garfield County Road and Bridge Department showing CRS 2R or CRS 2P meets the requirements as stated in subsection 702.03.

Aggregates Aggregate for cover coat material shall be in accordance with subsection 703.05 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the following:

• Gradation specification for 3/4” cover material shall conform to the No. 6 gradation as specified in Table 703-1 with the additional requirement of zero to 1 percent passing on the No. 200 sieve.

• Gradation specification for 3/8” cover material shall conform to the No. 8 gradation as specified in Table 703-1 with the additional requirement of zero to 1 percent passing on the No. 200 sieve.

• The aggregate shall be washed.

An analysis of a representative sample of the aggregate proposed shall be performed by an independent testing laboratory and a report submitted to the Garfield County Road and Bridge Department ten (10) calendar days prior to placement. The analysis shall consist of the Los Angeles abrasion test, sieve analysis, and unit weight as per AASHTO and/or ASTM standards.

CONSTRUCTION REQUIREMENTS

Construction requirements shall be in accordance with subsection 409.04 through 409.08 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022”.

Weather Limitations Shall be in accordance with subsection 409.04 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022”.

Equipment Shall be in accordance with subsection 409.05 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the addition of the following:

• Pick-up broom.

• Water truck.

Preparation of Surface Shall be in accordance with subsection 409.06 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the following additions:

• No application of the bituminous material and cover coat will be permitted until all patching has been completed unless otherwise approved by Garfield County.

• Garfield County will apply a weed killer to the roads to be sealed

• The Contractor shall remove all vegetation from the road surface prior to seal coat operations.

• The application of the seal coat shall not be started until the County has approved the surface.

Application of Bituminous Material Shall be in accordance with subsection 409.07 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the following:

• The bituminous material shall be applied at a rate of 0.60 gallons per square yard for 3/4” aggregates and shall be applied at a rate of 0.35 gallons per square yard for 3/8” aggregates.

Application of Cover Coat Material Shall be in accordance with subsection 409.08 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the following:

• The cover coat material shall be applied at a rate of 40 to 50 pounds per square yard for 3/4” aggregates and shall be applied at a rate of 20 to 25 pounds per square yard 3/8” aggregates.

• The Contractor shall broom all surfaces within seventy-two (72) hours or as directed by Garfield County. Excess material shall be collected in residential areas and disposed of off-site by the Contractor.

General Requirements Contractor will be responsible for all signing, flagging, and traffic control in accordance with the Manual on Uniform Traffic Control Devices and CDOT Supplement. Work must be warranted for one (1) year from the date of final acceptance. Manhole and valves on roads to be sealed and chipped shall be covered with paper or other suitable materials prior to sealing. The covering shall be removed immediately after the chip seal application has been completed.

The Contractor may, with the approval of Garfield County, obtain sites of his choosing for equipment storage and/or materials stockpiling. A list of such sites shall be submitted to Garfield County for approval at least ten (10) calendar days prior to intended use with a proposed truck route for ingress and egress to each site shown. For all sites approved and used, the Contractor shall be responsible for the following:

• The Contractor shall have written permission from the owner and Garfield County.

• Keep stockpiles and equipment confined within the approved area.

• Provide security for his material and equipment and for public safety at the site.

• Keep access roads clean and in good condition.

• Restore the site to its original or better condition, as determined by Garfield County, after use.

PRIME COAT APPLICATION

DESCRIPTION

Prime coat application shall be in accordance with section 407 of the Colorado Department of Transportation “Standard Specifications for Road and Bridge Construction, 2022” with the following:

• The bituminous material shall be applied at a rate of 0.30 gallons per square yard.

• Include blotting material with prime coat.

FOG SEAL

DESCRIPTION

A fog seal shall be applied at the rate of 0.10 gallon per square yard of diluted emulsion on specified roads directed by the County. The emulsion shall be diluted with water at a rate of 50 percent water and 50 percent CRS 2R or CRS 2P emulsion and applied with a pressure distributor.

GRAVEL APPLICATION

GRAVEL APPLICATION WHEN PLACING 3/8” CHIP SEAL OVER 3/4” CHIP SEAL

All 3/8” chip seal shall be placed over 3/4” chip seal within 72 hours. Road will be swept 24 hours after 3/8” chip seal has been placed. Road will be swept after 3/4” chip has been applied and then a final sweep after 3/8” chip has been applied.

Any county roads through subdivisions will need to be swept.

ROADS WILL HAVE BEGINNING AND STOP PAINTED BY DISTRICT FOREMAN

2025 Garfield County Road and Bridge Chipseal Project List

Road Name Approx. L x W Product Approx. SQ Yds.

CR 78 – Buck Point Rd. .94 miles x 24’ wide ⅜” chip and fog coat 13,235 SY

CR 79 – Basalt Mtn Dr. .29 miles x 24’ wide ⅜” chip and fog coat 4,083 SY CR 80 – Elk Range Rd. .43 miles x 24’ wide ⅜” chip and fog coat 6,054 SY CR 81 – Sunlight Dr. .28 miles x 24’ wide ⅜” chip and fog coat 3,942 SY

CR 170 – Panorama Dr. 2.88 miles x 28’ wide ⅜” chip and fog coat 47,308 SY

CR 233 – Silt Mesa Rd. 4 miles x 30’ wide ¾” & ⅜” double pin chip and fog coat 70,400 SY per chip

CR 301 – Morrisania Mesa Rd. 7.8 miles x 28’ wide ¾” & ⅜” double pin chip and fog coat 128,128 SY per chip

CR 333A – Hunter Mesa Rd. .4 miles x 45’ wide ¾” & ¾” double pin chip and fog coat 10,560 SY per chip