Selected Projects

Water, Storage/Reservoir Aspen Environmental Group Water, Storage/Reservoir Aspen Environmental Group

Littlerock Reservoir Sediment Removal Project

Aspen is providing design, CEQA/NEPA, permitting, and mitigation monitoring services to Palmdale Water District (PWD) for sediment removal at Littlerock Reservoir. Located on National Forest System (NFS) lands of the Angeles National Forest (ANF), Littlerock Reservoir is a man-made feature formed by the impoundment of water by the Littlerock Dam.

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Water, Storage/Reservoir Aspen Environmental Group Water, Storage/Reservoir Aspen Environmental Group

Cogswell Reservoir Restoration Project

Aspen is supporting the County with the environmental review and permitting of this sediment removal project. The County anticipates removing approximately 2.5 million cubic yards of sediment from Cogswell Reservoir, which is in the south-central portion of the Angeles National Forest along the West Fork of the San Gabriel River (WFSGR)

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Water, Flood Control Aspen Environmental Group Water, Flood Control Aspen Environmental Group

Alondra Park Multi-benefit Stormwater Capture Project

Aspen is preparing an initial site-specific environmental analysis following the current State CEQA Guidelines Appendix G Checklist to determine if an Addendum to the 2015 Los Angeles County Flood Control District Enhanced Watershed Management Programs (EWMP) Final Environmental Impact Report (Program EIR) is the appropriate CEQA document for the Alondra Park Multi-benefit Stormwater Capture Project.

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Water, Flood Control Aspen Environmental Group Water, Flood Control Aspen Environmental Group

Santa Clara River Levee (SCR-1) Levee Improvement Project

The Ventura County Watershed Protection District (District) proposes to rehabilitate the Santa Clara River levee system upstream of Highway 101 (SCR-1) to meet the levee criteria of both the Federal Emergency Management Agency (FEMA) and U.S. Army Corps of Engineers (USACE), and provide adequate protection from a one percent annual chance (formerly known as 100-year) flood event along the Santa Clara River for approximately 1,400 structures (residential, public, commercial, industrial, and agricultural) located in North Oxnard (El Rio area), Ventura County.

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Water, Flood Control Aspen Environmental Group Water, Flood Control Aspen Environmental Group

Rimforest Storm Drain Project

The Rimforest community is situated in the vicinity of the headwaters of Strawberry Creek. For at least the last thirty years, this community has been experiencing severe erosion and land sliding resulting in significant property loss.

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Water, Flood Control Aspen Environmental Group Water, Flood Control Aspen Environmental Group

Santa Ana River Mainstem Project - Prado Basin and Reach 9

Aspen has provided a variety of environmental services to the USACE for the Santa Ana River Mainstem Project. The Santa Ana River Mainstem Project is a major flood control project spanning 75 miles along the Santa Ana River – from the upper canyon in the San Bernardino Mountains downstream to the Pacific Ocean at Newport Beach.

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