The Thacker Dam is an irrigation structure on the Humbolt River near Mill City, Nevada that doubles as a flood water diversion to the Upper and Lower Pitt-Taylor Reservoirs in high water events. The diversion dam was approximately 100 years old and failing both hydraulically and structurally. Farr West analyzed the 100-yr flood event on the Humbolt River and designed a replacement structure and canal rehabilitation to allow adequate flows to pass through with greater volume and more efficiency. The dam project included a 94' long dam, a 500 foot long, 800 cfs temporary lined diversion channel and extensive erosion control BMPs.
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The Alamo Water and Sewer District has multiple, shallow, low-producing alluvial municipal wells with high arsenic, iron and manganese concentrations. Farr West identified sources of groundwater underlying the alluvial aquifer and designed and supervised the construction of a new municipal well. Farr West's role in the project has been extensive including the acquisition of funding for the project, protection of water rights, and development of the ability to readily demonstrate the system deficiencies to obtain additional project funding.
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The Hawthorne Utilities System Rehabilitation Project included the replacement of the sewer collection system (11.2 miles) and water distribution system lines (13 miles) throughout two thirds of Hawthorne, Nevada. Farr West Engineering prepared the Master Plan, Capitol Improvement Plan, and Preliminary Engineering Reports for Hawthorne Utilities. Farr West was also heavily involved in the funding acquisition (USDA and SRF), rate analysis (to obtain grant funding), Environmental Report, design, permitting (NDEP Bureau of Safe Drinking Water, Bureau of Water Pollution Control, and NDOT), bidding, extensive public outreach, negation, construction management, and construction inspection.
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The Canyon General Improvement District Sewer Improvement Project included the design, construction management and inspection of 1.5 miles of gravity sewer main, thee miles of treated effluent force main, septic conversion to community sewer of 75 homes, two sanitary sewer lift stations and two treated effluent pump stations. Farr West designed an extended aeration, return activated sludge wastewater treatment plant for the District. The design included an automatic headwork's screening and a polishing clarifier, a control building, a sludge dewatering facility, a bio solids disposal plan, wastewater and effluent tanks, and an electronic control system.
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