Surface Water Controls. Surface water controls shall be installed to intercept all concentrated flow from disturbed areas, convey it to an appropriate sediment trap or pond, and discharge it downstream of any disturbed areas. However, areas at the perimeter of the site that are small enough to be treated solely with perimeter protection do not require surface water controls. Significant sources of upstream surface water that drain onto disturbed areas shall be intercepted and conveyed (in a non-erosive pipe or channel) to a stabilized discharge point downstream of the disturbed areas. Surface water controls shall be installed concurrently with or immediately following rough grading. Special caution shall be used in protecting stockpile, material storage and equipment maintenance areas to prevent surface water from flooding these areas. Select BMPs for controlling surface water from the ODOT Hydraulics Manual. Show surface water controls on plan.
Appears in 4 contracts
Samples: Public Improvement Design and Construction Standards, Public Improvement Design & Construction Standards, Public Improvement Design & Construction Standards
