Littlerock Sediment Removal Phase 2, Years 1-5 (FY2022-2026)

Description

The Palmdale Water District (District) is looking for a qualified construction company to remove and dispose of sediment that has accumulated in the Littlerock Dam Reservoir. Sediment removal activities would involve the excavation of material from inside the reservoir, within the general disturbance area shown in Figure B-2. Sediment removal will not alter the Reservoir footprint, but will simply deepen the Reservoir within the excavation area shown in Figure B-2. The excavation area starts just upstream of the Dam and extends approximately 4,500 feet upstream of the Dam. The maximum excavation depth would be approximately 14 feet approximately 800 feet upstream of the Dam. The new channel bottom would taper upstream to the existing grade at the upstream limits of excavation. This disturbance area is contained entirely within the Reservoir inundation area. Detailed areas selected for sediment removal, areas marked for avoidance, maximum excavation depths and other relevant construction and access details are present in the 100 Percent Master Excavation and Phasing Plan.Currently, the District has received the necessary permits to complete the work and completed the Environmental Impact Report (EIR). The EIR has identified several disposal locations with it. However, the District expects sediment to disposed at one of the local quarries. Bidders shall review and agree to the requirements contained in the EIR and permits. Below is a summary of the permits in Table A-1 and more details are found in the link below. Table A-1 lists the federal. State, and local permits and authorizations required for the proposed project.<img alt="Inserted Image" data-maxwidthpercent="100" data-userscreensize="1920" src="https://govlist.s3.us-west-1.amazonaws.com/images/production/c