Project No: 60586008, P-052-180-002 This project consists of the Contractor providing all labor, equipment, materials, supplies, insurance, etc., necessary to make repairs and associated site improvements to Greenbrier Dam located at Greenbrier State Park, Boonsboro, Washington County, Maryland. The work includes, but is not limited to, the following:
a. Completing field-run survey including stakeout of repairs and improvements;
b. Installing, maintaining, and removing temporary erosion and sediment control and care of water measures;
c. Selective demolition;
d. Stripping and stockpiling of topsoil;
e. Constructing a blanket filter of fine aggregates on the downstream side of the dam embankment;
f. Constructing a toe drain of coarse and fine aggregates at the downstream toe of the dam embankment;
g. Constructing a filter diaphragm around the existing principal spillway pipe;
h. Installing controlled fill and grading on the dam embankment;
i. Trenching of rock to design grades in both downstream groins;
j. Installing trench drains on both downstream groins consisting of coarse and fine aggregates with drain pipes;
k. Constructing permanent cleanouts, weir boxes and endwalls for the proposed drain pipes associated with the toe drain, filter diaphragm and groin trench drains;
l. Constructing an access ramp to the principal spillway riser structure;
m. Placement of riprap on the upstream face of the dam, along the downstream groins and in the plunge pool downstream of the principal spillway outlet;
n. Installing topsoil and permanent stabilization measures on disturbed areas;
o. Installing park benches and keep off dam signs;
p. Maintaining red-lined drawings of as-built information;
q. Coordination with the Owner, EIC, and regulators as required by the Contract Documents and project permits;
r. Project management.
The deadline for questions has been established as November 3, 2023 @ 2:00 p.m., to ensure that there is enough time to allow for the A/E to provide responses and possible Addendum issuance if necessary.
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