SOW__Canal_Lining_Maintenance_and_Repair.pdf

STATEMENT OF WORK COLORADO RIVER

INDIAN IRRIGATION PROJECT

CANAL LINING MAINTENANCE AND REPAIR

I. PURPOSE

The Bureau of Indian Affairs (BIA), Colorado River Agency, Colorado River Indian Irrigation Project (CRIIP) is seeking to establish a contract for the maintenance of the approximately 140 miles of existing canal lining, to repair or replace broken or missing segments of the concrete lining.

II. PROJECT BACKGROUND

General: The Colorado River Indian Reservation was established by the Act of March 3, 1865. It is home to the Mohave, Chemehuevi, Hopi, and Navajo Tribes. Encompassing approximately 463 square miles, the Reservation is in the western part of La Paz County, Arizona, along 48 miles of the Colorado River and includes portions of San Bernardino and Riverside Counties in California. The CRIIP provides water for agricultural uses on the Colorado River Indian Reservation (CRIR). Irrigation started in 1867 when funds were provided to construct a canal for irrigating the CRIR. The water for the Project comes from the Colorado River through the Main Canal Headworks located at Headgate Rock Dam. The CRIR holds approximately 24% of Arizona's water rights to the Colorado River. With an assessed acreage of 79,529 acres, primary crops are alfalfa, cotton, and wheat.

III. SCOPE OF WORK

The CRIIP diverts irrigation water year-round except for the dry-up periods. The Lateral 90 dry-up is one week in early December, the Main Canal dry-up is two weeks in mid-January, and Lateral 73 dry-up is one week in mid-February. The majority of lining repair work is done during the dry-up periods. This contract will be for a full year so that the vendor can respond to any unplanned lining repair emergency.

The Vendor shall perform all duties and furnish all personnel, materials, equipment, and facilities necessary to deliver to the BIA the deliverables described in this document. The process for repairing existing lining includes the identification of the damaged concrete site, removal of the damaged concrete, preparation of the canal bank for the placement of the new Dry Processed Gunite Material (Gunite), and area clean-up. There may be as many as 30 locations per day.

1. The CRIIP will identify the location of the damaged concrete lining. CRIIP will mark the site beginning as soon as the water in the canal has been drained. The vendor shall locate the identified concrete repair sites to plan their work.

2. The CRIIP will remove the damaged concrete lining using equipment with the proper reach and capability. The vendor will have at least one employee on site with CRIIP equipment to assist in removing any smaller waste material and to assist the equipment operator to place soil to canal bank as necessary.

3. The vendor will prepare the earthwork of the exposed canal bank for the placement of new Gunite. Preparation of the earthwork includes compaction of the soil as needed, grading to a constant 4" thick from earth to even with the existing lining surface. Reparation also includes placement of 4" X 4" wire grid held 1" from soil surface to reinforce the new Gunite. The canal bank is on a 1.5:1 side slope so the vendor must be able to maintain the safety of the employees from sliding or falling the six to 25 feet of the bank depending on the location of the repair. During the annual dry-up there may be water left in the canal that may require small coffer dams to be made to isolate the lining damage near the bottom of the canal so the bank preparation can be completed. The vendor is responsible for the placement and removal of these coffer dams. With proper cooperation between the vendor and the CRIIP these coffer dams can be placed with the CRIIP equipment with minimal travel time for the track type equipment.

4. The CRIIP will purchase the Gunite and have it delivered to the vendor on the canal bank at each site. The vender will purchase the 4'X4" wire and have it available at the CRIP Poston Yard for the vendor to transport to the Gunite repair site.

5. The vendor shall place the Gunite onto the prepared site. The canal bank is on 1.5:1 side slope so the vendor must be able to maintain the safety of the employees from siding or falling the six to 25 feet of bank depending on the location of the repair. The top edge of the lining shall be level and consistent with the existing lining. The new Gunite will be placed to the same outer edge as the existing concrete. The surface of the placed Gunite will be finished with a bull float or other screed type tool for a smooth constant grade matching the existing concrete. Any extra or spoiled Gunite that was placed but screed from the repair must be removed from the canal. With cooperation from the vendor the CRIIP may assist the vendor with waste Gunite material removal from the canal. The vendor shall clean up the work area at each site.

6. The CRIIP and the vendor shall meet each morning during the dry-up period or every day the vendor is on the CRIIP right of way, to discuss the work plan and any deficiencies that my arise during the contract period and prepare plans to overcome those deficiencies.

7. The contract will be in force for 12 months and requires the vendor to be on call to make any emergency repairs that may occur on the CRIIP. The vendor shall agree to move equipment and personnel to the CRIIP within 48 hours of notification by CRIIP of an emergency Repair.

IV BIDDING REQUIREMENTS

It is difficult to know where the lining repairs are going to be or the total area of the new Gunite placement while there is water in the system. The CRIIP requires that the Pricing of the lining repair work be calculated as a per day requirement including all costs. By defining the cost per 10-hour day the CRIIP can control the cost of the work without determining the square footage of each lining repair that is unknown prior to draining the canal for repair. For bidding purposes, the CRIIP plans to have 24 days of dry-up available days before the water must be returned for irrigation. There are 10 additional days added to this bid for work during non-dry-up periods for emergency repairs for laterals that can be dried during the year. These additional days are for emergency repairs will also be subject to the daily price and when called will need to be available on site within 24 to 48 hours. Only cost per day bids will be accepted. Only the placement of Gunite materials will be accepted for bidding purposes. The CRIIP will base this contract on a 34 Day application for dry-up work and non-dry up work with emergency repairs as a base.

V PERIOD OF PERFORMACE

The period of performance for this effort will be 12 Months (365) day starting from notice to proceed.

VI POINT OF CONTACT

Manuel Ramirez

Supervisory Irrigation

Maintenance Specialist

Branch of Irrigation and O&M

21051-3 East Poston Road

Poston, LaPaz County, AZ 85371 mailto:manuel.ramirez@bia.gov mailto:clarence.begay@bia.gov

Colorado River Indian Irrigation Project

California

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52.246-1 INSPECTION OF CONSTRUCTION AUGUST 1996