Turbidity monitoring at select MDOT construction sites.

Details

• Creators:
  Aguilar, Alex M.
• Corporate Creators:
  Thompson Engineering
• Subject/TRT Terms:
  • Construction sites
  • Turbidity
  • Water quality management
  • Runoff
  • Field studies
  • Best practices
  • Data collection
  • Sedimentation
  • Erosion control
• Publication/ Report Number:
  State Study 225
• Resource Type:
  Tech Report
• Geographical Coverage:
  Mississippi
• Corporate Publisher:
  Mississippi. Dept. of Transportation
• Abstract:
  The objective of this project was to establish baseline turbidity conditions at select construction ; sites by establishing a water quality monitoring program and documenting MDOT approved ; BMPs on site. In 2009 the United States Environmental Protection Agency (EPA) proposed a ; numeric turbidity limit for stormwater runoff at construction sites. The proposed limit of 280 ; NTUs was stayed due to a miscalculation, and EPA has not released a new numeric limit for ; turbidity. Current Mississippi Department of Environmental (MDEQ) Water Quality Standards ; (WQS) require that turbidity 750 feet downstream from the point of discharge not exceed the ; background turbidity levels upstream of the discharge point buy 50 NTU. MDOT has no method ; of evaluation in place to measure turbidity at construction sites; and therefore, no background ; data are available to indicate how current erosion and sedimentation BMPs are performing with ; respect to potential increases in turbidity. Methods of analysis used in this report included the ; collection of turbidity data from seven sites where MDOT construction posed a potential threat ; to waters of the state. Prospective sites had to meet certain criteria in order to be used for the ; study.
  More +
• Format:
  PDF
• Funding:
  09-2118-0034
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29563/dot_29563_DS1.pdf
• File Type:
  [PDF - 31.52 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:aeb4683ae32db638cf9fe37de379a1c07d804adbc1e6a14e58ce524ed70b0938