ASTM WK70817
Revision of C1746 / C1746M - 19 Standard Test Method for Measurement of Suspended Sediment Removal Efficiency of Hydrodynamic Stormwater Separators and Underground Settling Devices
Active Standard: C1746 / C1746M - 19
Developed by Subcommittee: C27.70 | Committee C27 | Contact Staff Manager
WK70817
Keywords
discharge; filters; flow; hydraulic capacity; scour or resuspension; sediments; specific gravity; velocity;;Rationale
In section 6.7, the proposed 0.1% leakage limit can be unrealistic under low flow rate conditions (such as 25% of MTFR). A proposed alternate rate is 0.2% (110 gpm or higher) , or, to allow for even lower-flow-rates, 0.5%. Alternatively, an absolute leakage rate limit could be set as 0.25 gpm.
Back to TopWork Item Status
Date Initiated:
11-26-2019
Technical Contact:
Bo Liu
Status:
Draft Under Development