Location: Blanco Diversion Dam in Archuleta County, Colorado

We will perform the following:

1. Provide Diversion and Care of the Blanco River

    a. Maintain a minimum bypass flow as required

    b. Divert remaining flows into the Blanco tunnel

2. Excavate and clean off Blanco Ogee Weir Spillway fliip-bucket.  Includes area downstream of Baffle Dissipaters as required to resurface the spillway.

3. Dewatering from excavations and other work locations.

4. Hydrodemolition of Ogee Weir Spillway, Ogee Weir Spillway upstream Face at existing Construction Joint, Baffle Dissipaters, Sluiceway Wall, and area upstream of Sluiceway Entrance on Concrete Apron.

    a. Hydrodemolition cold weather operations shall be performed if site temperatures are bleow 50 degrees Fahrenheit.

5. Furnish and Install new and/or replacement reinforcement where required by specifications, drawings, or as dired by the CO.

6. Furnish and Install PVC waterstop as shown in drawings.

7. Furnish and Place Silica Fume Concrete (12,00 PSI) in the floowoing areas: Ogee Weir Spillway, Baffle Dissipaters, Ogee Weir Spillway upstream Face at existing Construction Joint, Sluiceway Wall, area upstream of Sluiceway Entrance on Concrete Apron.

    a. Silica fume shotocrete cold weather operations shall be performed if site temperatures are below 50 degrees Fahrenheit.

8. Backfill and compact earthen materials removed downstream of baffle dissipaters and perform final grading.