Search results with tag "Extended detention"
CHAPTER 9.4 Standard for Extended Detention Basins
www.njstormwater.orgNew Jersey Stormwater Best Management Practices Manual February 2004 CHAPTER 9.4 Standard for Extended Detention Basins Definition An extended detention basin is a facility constructed through filling and/or excavation that provides
Unit Price Schedule - Fairfax County Homepage | Fairfax County
www.fairfaxcounty.govBioretention Basins & Filters $ CY Constructed Wetlands $ CY Extended Detention Pond (Dry Pond) $ CY Extended Detention and Retention Riser Structure $ VLF Manufactured BMP Systems - Hydrodynamics $ CY Manufactured BMP Systems - Filtering $ CY Permeable Pavement System - Asphalt with gravel base and perforated drains, brick & grass pavers with ...
Table 4.1 New York Stormwater Sizing Criteria1
www.dec.ny.gov(provided a micropool is specified) extended detention. A local jurisdiction may reduce this requirement to as little as 12 hours in trout waters to prevent stream warming. If TR-55 method is used for the design of stormwater management practices for storms greater than 90%, detention time may be calculated using either a center of
MODEL STANDARD PLAN FOR POULTRY HOUSE SITE …
mde.state.md.usThe Standard Plan includes multiple ESD practices, namely non-rooftop disconnections, grass swales, infiltration, and wetlands. Structural practices have been limited to a single wet extended detention pond. One of the design options uses only ESD with no pond. MDE has developed detailed site development plans for 12 different design options. A
EXTENDED DETENTION BASINS - njstormwater.org
www.njstormwater.orgDraft January 2011 Page 6.4-3 A. Storage Volume, Depth, and Duration Extended detention basins are designed to provide treatment of runoff volume generated by the