SEUG-Supply_Concrete-SOW.docx

National Park Service Arches & Canyonlands National Parks

Statement of Work: Supply and Deliver Concrete

Work Locations: Arches National Park, Windows Area, 18 miles from Moab, UT & Canyonlands National Park, Island in the Sky maintenance area, 32 miles from Moab, UT

PROJECT SPECIFICATIONS

1.1 DESCRIPTION

A. Synopsis. Supply and deliver concrete for the Lower Windows Parking Expansion project located in Arches National Park and at Canyonlands National Park, Island in the Sky District. The Contractor shall also provide various concrete admixtures as listed in this specification. The quantities of the admixtures will be proportional to the amount of concrete that is ordered.

B. Locations.

1. The work is located at Arches National Park, 5 miles north on U.S. Highway 191 from Moab, Utah. The delivery location is located approximately 13 miles from the entrance station using the Park Scenic Drive. Travel north 12 miles on the Scenic Drive and just past Balanced Rock turn right (east) along the Windows Drive for one mile. The work site is on the lower parking lot of the Windows loop drive.

2. The work is located at Canyonlands National Park, Island in the Sky District, 10 miles north of Moab on U.S. Highway 191 and 22 miles southwest on State Route 313. The site is approximately 1,200 feet west of the Visitor Center.

C. Period of Performance. The period of performance is open from 7/15/2021 to 4/30/2022.

D. Warranty. Standard manufacturer’s warranty on concrete materials.

1.2 PROJECT CONDITIONS

A. Concrete Truck. The concrete supply truck shall be a minimum 10 cubic yard (CY) truck. The concrete truck shall have a front discharge chute that can be controlled by the driver. Rear discharge chutes will not be allowed.

B. Delivery days and hours. Concrete delivery shall be as scheduled by the Park, with no weekend or Federal Holiday deliveries being requested. All deliveries shall be coordinated with Eric McDougall (435) 719-2157.

C. Services. NPS Phones are not available to the Contractor. Restrooms are available for Contractor use at the Visitor Center and at various locations within the Park.

D. Hot or Cold Weather Concrete. Concrete may require additional admixtures to allow hot or cold weather placement. These additives are ice, hot water, calcium chloride, fly ash, microfibers and/or delay set up to 2 hours. Due to weather variability, the use of these additives will not be known until the day of ordering. The Park will determine if these additives are required on the day that the concrete is ordered.

1.3 SUBMITTALS

A. Submittals. Provide electronic cut sheets, preferably in PDF format, that document that the concrete mixture and associated admixture products meet the requirements of 2.1 Products and 1.1D Warranty. Provide certification of competency for manufacturer’s concrete mixture 28-day compressive strength. This information must be included with the quote, even if an approved product is being supplied.

PART 2 PRODUCTS

2.1 CONCRETE REQUIREMENTS

A. The Concrete shall be grey or the integral color concrete. The color shall be Davis 5084. Other brands of similar color may be used. Color shall be added to the mix design at 12 lbs. of color per cubic yard of concrete.

B. Air Entrainment: 6% ± 1%. ASTM C260 specification.

C. 28 Day Compressive Strength: ≥ 4,000 psi mix design. ASTM C873 specification.

D. Cement: Type I or II. ASTM C150 specification.

E. Water-Cement Ratio: 0.35 ≤ W/C ≤ 0.45.

F. Slump at Maximum W/C Ratio: 4 to 6 inches. ASTM C143 specification.

G. Maximum Aggregate Size: 1 inch. ASTM C33 specification.

H. Temperature: ≤ 90°F. ASTM C1094 specification.

I. Ice: Add ice at 15 lbs. per cubic yard if requested by the Park.

J. Delay Set: Add delay set if requested by the Park for delay up to 2 hours. ASTM C1017 specification.

K. Fly Ash: Option if requested by the Park for substituting 10-25% of required cement amount with fly ash by weight. ASTM A618 specification.

L. Hot Water: Substitute Hot Water in Mix Design for cold weather concrete.

M. Calcium Chloride: 0.5% to 2.0% if requested.

N. Fiber Mesh: Option if requested for micro fibers normally added at 1.5lbs/ft3.

PART 3 EXECUTION

3.1 CONCRETE DELIVERY

A. NPS will schedule the exact time and date of delivery with the Contractor.

B. Contractor to deliver to the site specified by the Park.

C. The Park will place and finish the delivered concrete.

D. The Contractor shall allow 6 minutes per cubic yard unloading time with no additional costs. The Contractor may charge the Park for unloading time in excess of 6 minutes per cubic yard, at the Contractor’s documented hourly rate.

E. The Park will provide an area for washing out the truck drum after delivery to the site.

3.2 SAFETY

A. The work site shall always be maintained to protect visitor, employee and Contractor safety.

END OF SECTION

PART 4 MEASUREMENT AND PAYMENT

4.1 Measurement. Products will be measured and paid according to the certified weigh tickets converted to cubic yards. Delivery time will be based on travel time from the time the concrete truck leaves the batch plant (not including any batching time) to the time that the truck returns to the batch plant, excluding the off-loading time. Signed trip tickets indicating the truck departure and return time shall be submitted for payment.

4.2 Payment. Payment will be made on the actual quantity of concrete delivered, actual delivery time in hours, plus any admixtures used.

BID SCHEDULE

All or None

PROJECT: SUPPLY CONCRETE

PARK: ARCHES & CANYONLANDS

1. Supply Concrete 130 CY $__________ $_____________ (Colored)

2. Delivery Charge 60 HR $__________ $_____________

GRAND TOTAL $_____________

ESTABLISH COSTS FOR ADMIXTURE OPTIONS:

3. Ice at 15 lbs. 1 CY $__________ $_____________

time but will pay for 2 hours)

5. Fly Ash (10-25%) 1 CY $__________ $_____________

6. Fiber Mesh 1 CY $__________ $_____________

7. Hot Water 1 CY $__________ $_____________

8. Calcium Chloride (0.5-2%) 1 CY $__________ $_____________