NEVADA DEPARTMENT OF TRANSPORTATION I-580 EXTENSION WATER QUALITY STUDY & BMP EFFECTIVENESS STUDY

Since 2003, JBR Environmental Consultants, Inc. has been conducting water quality monitoring and studying Best Management Practice (BMP) effectiveness for the Nevada Department of Transportation (NDOT) on its $440 million, 8-year I-580 Extension Project. NDOT has incorporated state-of-the-art engineering into the highway design in an effort to maintain and improve water quality. Specifically, NDOT will provide permanent on-site stormwater runoff treatment by incorporating structural control measures like water quality basins and sand-oil interceptors. To determine any impacts to waters resulting from implementation of the project, JBR is performing baseline, interim, and post-construction water quality monitoring. This study includes a Baseline Water Quality Assessment; development and implementation of Sampling and Analysis Plans; weather monitoring and stormwater sampling; quarterly surface water monitoring; design, installation, and maintenance of near-continuous in situ turbidity probes; interpretation of water quality analyses related to construction activities; assessment of temporary BMP function during runoff events; and report writing.

• Molly Reeves - Project Manager -