C154213 Contract

• Contract/PO #: C154213
• Contractor Name: San Luis Valley Irrigation District
• Contract Type: Grant
• Loan Projects - Doc Type: Contract Documents

walls will require a roughly 2 to 6-foot raise.This is expected to be accomplished by a combination of
cast-in-place concrete and perhaps shotcrete. Additionally, some of the existing spillway floor slabs will
require replacement or rehabilitation due to the condition of the existing concrete.
The CWCB's 2012 Projects Bill authorized and appropriated a $5 million grant to the SLVID to perform
the design and other activities towards the rehabilitation of Rio Grande Reservoir, as part of the Rio
Grande Cooperative Project. The 2012 Projects Bill also authorized an additional $15 million towards to
the project, as a loan/grant combination, which will be determined by the CWCB board at a later date.
CWCB is currently working with SLVID in spending the $5 million grant funds, which will involve a
number of different activities, such as;final design, material and equipment purchase, and various
construction activities, over the next few years.
The following section presents SLVID's prime subcontractor, Brad Moore's Scope of Services for the
work associated with the clay liner, as part of the overall $5 million grant to SLVID. This is part of the fist
primary construction component above: 1) Upstream Clay Blanket.
SCOPE OF SERVICES
The San Luis Valley Irrigation District will use Brad Moore (Contractor) as the prime sub-consultant to
perform the work. The work to be performed under this contract involves the processing of
approximately 20,000 cubic yards of soil and rock materials from the San Luis Valley Irrigation District's
(SLVID) Rio Grande Reservoir property. The processed material will be utilized for the construction of
the upstream clay blanket liner over the left abutment, as described above within the Statement of
Work.
Processing shall consist of screening various gradations from the existing landslide deposit. Four types of
materials shall be stockpiled with two primary areas near the dam:
Clay Liner: Materials passing a 2-inch and 3-inch screen
Gravel and Cobbles: Material between 2-inch and 6-inch
Riprap: 6-inch to 30-inch
Oversized Riprap: 30-inch and larger
1. Limits of borrow areas as shown,
2. Trees that cannot be disturbed as shown,
3. Structures that cannot be disturbed, including buildings, monitoring wells, power lines, etc.,
4. Maximum excavation slopes of 2:1 (horizontal to vertical) or locally steeper to match existing
slopes,
5. Work is to be on SLVID land only and no excavation should be made in Forest Service Road right-of-
way(30 feet off road centerline).
The SLVID will comply with all local, state and federal laws. SLVID is responsible for a Storm Water
Management Plan with the State of Colorado. Any required correspondence with the U.S. Forest Service
will be by SLVID. Any blasting required should be monitored with a seismograph. Fly rock should be
controlled with blasting mats and traffic stopped along the Forest Service road prior to each blast.
The various tasks to complete this work are described below: