City of Lawrenceburg; Lawrenceburg, TN
Tenesee Department of Transportation; Spencer, TN
Tenesee Department of Transportation; Dickson, TN
Client Confidential; Charleston, SC
City of Portland, TN
McDonnell Douglas; Titusville, FL
Tenesee Department of Transportation; Dickson, TN
City of Russellville, KY
City of Fayetteville, TN
PSC Metals; Knoxville, TN
Medegen Medical Products; Gallaway, TN
HMA Whites Creek Asphalt Plant; Nashville, TN
C.W. Rawdon Development Property; Lawrenceburg, TN

Conducted drainage planning for the Shoal Creek watershed involving coordination with the City, the U.S. Army Corps of Engineers, and TDOT. Developed a definitive plan for remedying recurrent flooding in the vicinity of downtown Lawrenceburg. Assisted the Corps with survey data collection of stream cross sections and hydraulic modeling. Designed drainage structures, retention basins and storm water conveyance systems to alleviate the flooding problem. Key tasks included:

• Researched frequency and scope of flooding in the area through meetings with local citizens and business representatives and local government representatives such as the local emergency management agency.
• Assisted the USACE with survey data collection of stream cross-sectional data and met with USACE representatives to review data, and define the design interfaces between their study and the project.
• Met with TDOT representatives to coordinate data output from the USACE hydraulic model and to assure that the drainage structures designed by TDOT are consistent with the overall conclusions and recommendations of the studies.
• Recommendations were developed for local drainage structures, retention basins and conveyance systems to move water within the affected area to a point or points from which it can be exported in accordance with the recommendations of the USACE study.
• Assisted the City in obtaining federal and state grant monies to allow for construction of the storm water drainage system.
• Designed drainage structures, conveyance systems, pump station, force main, energy dissipating structures, and detention and retention ponds. Produced final construction plans and specifications.
• Conducted utility study including inventorying existing facilities and designed utility relocations and/or upgrades as needed.
• Identified blue line streams impacted and obtained necessary permits.
• Provided construction oversight for construction of projects and obtain all necessary permits necessary for construction activities.
  

Conducted feasibility study to determine a possible alternative discharge stream for the Spencer Waste Water Treatment Plant discharge. Developed hydraulic flow models of potential receiving streams using gathered survey and flow data to determine the impact of the discharge upon the stream.

TDOT tasked EME and its contract team with cleaning sediment out of 13 multi-channel rock-bottom culverts (slab bridges) from previous highway construction. The state environmental department was concerned flash storms would re-entrain this sediment and degrade water quality. EME realized that cleaning the 300+ foot long culverts would only be a short-term solution due to the improper installation of the culverts and proposed revamping the streambanks of the influent and effluent to prevent future sediment buildup. EME proposed using NRCS-approved BMP bioengineering techniques to create high- and low-flow channels to maintain the stream’s natural velocity and volume. EME’s design allowed all of the sediment to remain without the cost of hauling and spreading the sediment out of the floodplain. Utilizing deep-rooting vegetation, fabrics and biogabions EME permanently stabilized the redesigned stream banks for the same cost as cleaning the sediment out just one time.

Designed an innovative stormwater system for this industrial facility including retention and detention areas and ponds diversion structures, culverts, and outlet structures. This system had to account for the planned on-site remediation activities, areas of sensitive karst marshes and tidal impacts. Hydrologic studies were performed and hydraulic models were developed to assist in the design of these structures. Also, as a part of the stormwater discharge permitting and requirements, EME staff provided this facility’s first proposal to South Carolina’s Department of Health and Environmental Protection under RCRA for the use of toxic dilution zone modeling in an estuarine environment for NPDES permitting and outfall design. This modeling allowed in-stream concentrations to actually be 4 times greater at the outfall than previously permitted. Even with the in-stream concentration increase, this submerged jet design (for buoyant freshwater discharge into saline ambient flow) produced a remarkably small dilution zone for both acute and chronic toxicity. This saved valuable time and money for the client in regards to NPDES permitting for the facility’s stormwater discharge.

Design of a wastewater treatment plant system and details, expansion layout, sequencing batch reactors, bar screen, aerated grit chamber, headwork pumps and equipment, and details. Design of sanitary pump station, 3,300 lf of 6-inch force main, and gravity flow sewers. Performed oversight for the rehabilitation of sanitary sewers including internal inspection, flow balance, state grant acquisition, pipe and manhole replacement, and repair.

Completed closure of the first State of Florida permitted Resource Conservation and Recovery Act site for an NPDES-permitted defense contractor. Project included contamination delineation, initial remedial actions, remedial design and installation, contaminant statistical analysis, and regulatory negotiation.

Acting as sub-consultant, designed agricultural facilities to serve as mitigation for streams within the TDOT Route 840 project. Project included selection of farm sites and design of solar-powered watering pumps, watering troughs, concrete cattle crossings, fencing of cattle away from streams and water gates.

Design of 139,000-gallon water storage tank including property acquisition, geotechnical study and structural design. The project included the design of a 1 MGD water booster pump station, 3,000 linear feet of water supply line, and system pressure equalization.

Design of booster pump station, grinder pump station, sanitary sewer, and water line extensions. Prepared plans for relocations of public utilities to accommodate a TDOT highway expansion project.

Designed an innovative storm sewer system for PSC Metals in accordance with the City of Knoxville Special Abatement Program. This project included the design of conveyance and diversion structures, inlets, grading, and a multi-stage water-quality treatment pond. Developed construction plans, contract documents and specifications.

This project included the development of a Wetland Mitigation Plan in response to the client’s expansion and construction needs. The plan involved a constructed wetland, stream relocation and mitigation, identification and replacement of native wetland vegetation and animal species and a long-term maintenance and monitoring plan. Responsible for assisting with the design of the constructed wetlands, specifically performing a hydrologic analysis and model of the drainage area, calculated volume and storage requirements, designed a sediment forebay to protect the wetland and designed a discharge structure. Produced contract documents and specifications and facilitated the bidding process to select qualified sub-contractors.

Modeled and designed stormwater detention ponds, catch basins and pipe sizes. This project included determining runoff from design storm events to the ponds, required pond volumes, and discharge structures.

Members of EME’s staff identified drainage areas and sizes to determine stormwater runoff quantities in the project area. This involved the development of meteorological data based on design storms and actual rain gauges and the formation of hydrographs for each drainage area. This data was then used to size drainage structures and make recommendations for development of the property.