WK93169 - New Practice for Calculation of Flow-Weighted Event Mean Concentration from Time-paced Samples

Work Item

ASTM WK93169

New Practice for Calculation of Flow-Weighted Event Mean Concentration from Time-paced Samples

1. Scope

Standardizing the calculation method for coupling hydrograph and pollutograph data to (1) determine aliquot volumes to mix a flow-weighted composite sample from discrete samples; and (2) calculate a flow-weighted EMC from laboratory analysis of discrete samples (i.e. from the pollutograph).

Keywords

event mean concentration; flow-weighting; pollutograph; stomrwater; water quality; automatic sampling

Rationale

Flow-weighted event mean concentrations (EMCs) are the "gold standard" for SCM/BMP water quality performance analysis; documentation on what is "flow-weighted" is limited to narrative description. This standard will establish a consistent quantitative flow-weighting procedure.

Details

Developed by Subcommittee: E64.02

Committee: E64

Staff Manager: Frank McConnell

Work Item Status

Date Initiated: 12-12-2024

Technical Contact: Elizabeth Fassman-Beck

Item: 000

Ballot:

Status: