Turbidity monitoring at select MDOT construction sites.

Details

• Creators:
  Aguilar, Alex M.
• Corporate Creators:
  Thompson Engineering
• Subject/TRT Terms:
  Best Practices Construction Sites Data Collection Erosion Control Field Studies Runoff Sedimentation Turbidity Water Quality Management
• 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.
  
  
• Format:
  PDF
• Funding:
  09-2118-0034
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:aeb4683ae32db638cf9fe37de379a1c07d804adbc1e6a14e58ce524ed70b0938
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29563/dot_29563_DS1.pdf
• File Type:
  [PDF - 31.52 MB ]