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Little Rock owns and operates a 300-ton-per-day municipal solid waste landfill that has been in operation since 1993. Based on the quantity of waste in place, it was determined that installation of a landfill gas (LFG) collection and control system was necessary in order to meet federal air regulations. The city contracted with Johnson Controls,… Read more »
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FTN was hired by a sugar mill in southern Louisiana that discharges wastewater to a nearby lake. The sugar mill was expanding and needed its NPDES permit limits changed to reflect an increased amount of effluent flow and biochemical oxygen demand (BOD) loading. The allowable effluent loading was limited by a total maximum daily load… Read more »
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A retailer selected a 20-acre site in Fort Smith, AR., for construction of a large store. FTN conducted a delineation of potential Section 404 issues and submitted the delineation to the Corps of Engineers Little Rock District with a Section 404 Individual Permit application. Also, the project area supported an important cultural resources site (i.e.,… Read more »
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FTN completed a use attainability analysis (UAA) for the receiving stream for the Jonesboro City Water & Light (CWL) Westside Wastewater Treatment Plant. The UAA led to revised water quality standards for chloride, sulfate, and total dissolved solids (TDS) in the receiving stream. The revised criteria allowed CWL to avoid permit limits that were not… Read more »
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The Arkansas Game & Fish Commission contracted FTN to conduct a multi-year, comprehensive evaluation of water quality, sedimentation, and hydraulics/hydrology of 6,700-acre Lake Conway. Some of the components of the evaluation were: Assisted with obtaining matching funds to support the project and qualify for sport fishery federal funding; Compiled and analyzed historical data; Designed routine… Read more »
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A municipality developed a plan for a proposed sewer line project for which FTN provided professional environmental consulting services. Those services included: a delineation of Section 404 waters of the United States, including wetlands; preparation of a Section 404 permit application for submittal to the Little Rock District of the US Army Corps of Engineers;… Read more »
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FTN has completed USDA NRCS ID/IQ contracts in Louisiana to provide Hydrologic Analysis and Modeling Services. The work included: Hypothetical and historic flood analysis through watershed modeling (HEC-1, HEC-HMS); Flow and elevation frequency analysis; Profile analysis using both steady and unsteady flow methods (HEC-2, HEC-RAS, HEC-GeoRAS, UNET); Multi-dimensional modeling (SMS, RMA2, RMA11, HEC-RAS 5.0 Beta… Read more »
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FTN prepared watershed-based management plans for four HUC-8 watersheds in Arkansas. These four watersheds were identified by the Arkansas Natural Resources Commission as priorities for allocation of state and federal funds to address nonpoint sources of pollution impacting water quality. The four watersheds that were the focus of this project include: Cache River; Strawberry River;… Read more »
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FTN was selected as part of a team to assist the Arkansas Natural Resources Commission with updating the Arkansas Water Plan, which was last updated in 1988. This project covered a broad scope of water resources activities, including the following: Coordination with ANRC and other state agencies, communities, and stakeholders, as well as facilitation of… Read more »
Read MoreIn response to NRC inquiries regarding worst-case credible flooding on the Missouri River, Nebraska Public Power District’s (NPPD) Nuclear Station contracted with FTN to perform a study to evaluate the Corps of Engineers “Upper Mississippi River System Flood Frequency Study,” as it related to the probable maximum flood (PMF) water surface elevations at the station.… Read more »
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