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Identification and Mitigation of Non-Point Sources of Fecal Coliform Bacteria and Low Dissolved Oxygen in Kingston Lake and Crabtree Creek
(Waccamaw River Watershed)
BMP DEMONSTRATION

This project will also demonstrate the utility of an innovative stormwater best management practice (BMP), namely a multiple pond extended detention/wetland system, in reducing the nonpoint source inputs of fecal coliform and BOD to the watershed. The implementation project will involve a retrofit to an existing BMP that drains into recommended project areas in the watershed, i.e. Crabtree Swamp and Kingston Lake, and thus will directly reduce loadings to this system.

Implementation of this BMP will also involve on-site educational components including installation of permanent signage as well as site visits and ongoing research efforts within the context of the lead organization's undergraduate curriculum. An educational brochure and WWW page will also be constructed to assist with the educational efforts directed at community planners and regulators as well as property owners associations and environmental groups. This will continue the efforts of a locally based, currently funded 319 Program Project, entitled NPS Education for Municipal Officials (NEMO). Many of these community planners and regulators have agreed to work as cooperators and participants on the project and include the City of Conway and Horry County’s Public Works and Planning Departments, the Water Quality Director of the Waccamaw Regional Planning Commission, the local permitting official and engineer for SC OCRM, the environmental director of GSWSA, SC DHEC’s local environmental health supervisor who oversees septic tank permitting, and the director of the U.S. Fish and Wildlife Service’s Coastal Ecosystems Program. These agencies will also be providing advice and, in the case of the USGS and GSWSA, considerable technical assistance in data acquisition and modeling. The USGS will also be providing stream gages, in-situ water quality data loggers and automated stormwater samplers.

The results of the assessment and implementation work will be used by SC OCRM to upgrade their design requirements for residential/commercial stormwater BMP's for coastal settings. The results will also be submitted to Horry County to assist in their on-going effort to formulate a county-wide stormwater ordinance. The proposed project's results will also be useful to SC DHEC in its efforts to develop Total Maximum Daily Loads (TMDL's) for the watershed. The development of a TMDL for BOD is of interest to the GSWSA as they hold an NPDES permit for the discharge of treated municipal sewage from their Conway plant. The U.S. Fish and Wildlife Service also plans to use the assessment information, in the form of GIS overlays, to help in formulating a management plan for its new 50,000-acre Waccamaw National Wildlife Refuge which is located within the lower reach of the watershed.

 
 
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