Stormwater Pollution Control Upgrade and Tide Gate Replacement

Logan International Airport
Boston, Massachusetts

Client: Massachusetts Port Authority


  • Bidding Services
  • Construction Administration
  • Construction Observation
  • Evaluation of Alternatives
  • Hydraulic Design
  • Permitting
  • Stormwater Design

Project Summary

Hoyle Tanner conducted a study of stormwater control alternatives in conjunction with tide gate replacement at the North and West outfalls at Logan International Airport to replace the existing stormwater control facilities. Alternatives included: upgrade and repair existing oil/water separator equipment, install new oil/watr separator equipment, repir the existing mechanical bar screens, replace the mechanical bar screens, replace the existing tide gates with a different type of tide gate system, install a new type of flow control system, and other cost-effective methods of stormwater and tide control. Alternatives for tide water control included: retain the existing flipper-style system, use rubber-reinforced flexile gates, use Tide-Flex™ style gates, or change to motor operated sluice gates with manual override.

The objective of the project was to maintain compliance with Massport’s existing stormwater National Pollutant Discharge Elimination System (NPDES) permit, maximize recovery of oil entering the storm drain system from runways and taxiways, and minimize release of oil into Boston Harbor. Hoyle Tanner’s scope of work included detailed, comprehensive evaluation of existing equipment and control elements, evaluation of reliability and effectiveness, operation and maintenance procedures and costs, review of hydraulic flow and environmental sampling data, NPDES permit compliance assistance, and permitting and approvals through the Massachusetts Department of Environmental Protection (MADEP).

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