LEWIS ENVIRONMENTAL CONSULTING
Contract: $73,214 - U.S. Army Corps of Engineers - civil program financing only - Jul. 1, 2009
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Award Description: The purpose of this work is to reassess the existing freshwater mussel community and habitat in the Tennessee River downstream from Kentucky Lock and Dam. The study shall be conducted using consistent methods that allow the data to be compared between surveys to enable statistical documentation of changes in the mussel community and habitat. This work is performed to meet environmental protection requirements specified during the NEPA process for the Kentucky Lock Addition Project.In July 1998 construction officially began on the Kentucky Lock Addition Project. To date, however, relatively few features that are located in the river have been constructed. Operations and traffic movement at the existing lock continue basically unchanged. Until 2003, the six sites sampled in 1990 provided the only quantitative data set available that described the large mussel bed immediately downstream from Kentucky Lock and Dam. In 2003 a longterm mussel monitoring project was established to document the mussel community. The long-term monitoring project focused upon collection and analysis of mussels from four defined areas (two experimental, two control) in the Kentucky Lock and Dam tailwater. Also in these four areas other environmental measures, such as sediment quality were collected. Hydrographic surveys were performed to obtain riverbed contours. Work completed so far has revealed both a dynamic mussel community and physical environment. Through continued monitoring and assessment of these four areas, changes in the mussel community and associated habitats can be documented. Monitoring can help determine whether changes in the mussel community are brought about by mostly natural variation or are human induced. Understanding mussel community dynamics is critical to determining how or if construction and operation of the new navigation lock and associated features affects the mussel community. Overall Goals for the Long-Term Mussel Monitoring Project • Determine an estimate of density for all species of mussels located within the selected sampling areas in the Kentucky Lock and Dam tailwater • Determine the community structure and allometric characteristics (age class, size, weight, recruitment, dominant species). • Assess existing habitat conditions through substrate profiling and sediment analysis. Document changes in riverbed substrate elevation over time to indicate to what degree scouring or sediment deposition is occurring. • Compare the listed factors at periodic intervals during construction of the new lock and after construction is completed, and statistically document changes if they occur. • Determine 'natural' mussel community variation at each of the monitoring areas versus human induced influences.
Project Description: Commercial hydrographic mapping services. Commercial diving services to collect biological samples. Commercial diving services to collect sediment samples. Biological services to process biological samples. Analytical laboratory services to proccess sediment samples. Consulting services for planning the collection operations.
Jobs Summary: No new jobs were created to perform this work, however 14 jobs were retained utilizing this funding in four separate companies. Jobs retained and benefited by this funding included work for one full time mapping specialist, five full time commercial divers, two full time malacologists, four full time aquatic biologists, one full time consultant, and one full time laboratory analyst. (Total jobs reported: 14)
Project Status: Completed
This award's data was last updated on Jul. 1, 2009. Help expand these official descriptions using the wiki below.
Funds from this award have been disbursed to subcontractors. Click here to see a list of subcontractors.
Subcontractors
| Recipient | Amount | City | State |
|---|---|---|---|
| Third Rock Consultants, LLC | $1,694 | LEXINGTON | KY |
| MAINSTREAM COMMERCIAL DIVERS, INC. | $31,889 | MURRAY | KY |
| Florence & Hutcheson, Inc. | $2,688 | PADUCAH | KY |
| Eco-Tech Consultants, Inc. | $17,114 | FRANKFORT | KY |
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