|
Home
Contact Us
Management and
Staff
Meetings and
Minutes
Policies and
Resolutions
Regulatory
Obligations
Facility Description
Plant Processes
Projects
Current Projects
Flow Reports
Links
| |
Nine Minimum Controls (NMC)
NMC No. 4 -
Maximization of Flow to the Publicly Owned Treatment Works (POTW) for Treatment
This
NMC entails making modifications to the CSS and the POTW to allow as much
wet-weather flow to reach the POTW as possible. The goal is to minimize
the magnitude, frequency and duration of the CSO's. The Federal EPA
recommends that the following minimum measures be considered in implementing
this control.
-
Determine
the capacity of the interceptors and ensure that the full capacity is
available.
-
Analyze
existing records to compare flows processed by the plant during wet weather
and dry periods and determine the relationships between performance and
flow.
-
Compare
the current flows with the design capacity of the overall facility, as well
as the capacity of the individual unit processes. Additionally, this may
include identification of locations of available excess capacity.
-
Determine
the ability of the POTW to operate acceptably at incremental increases in
wet-weather flows, and estimate the effect on the POTW's compliance with the
effluent limits in its NPDES permit.
-
Determine
whether unused treatment units at the POTW can be used to treat or store wet
weather flows.
-
Develop
project and O & M cost estimates for any proposed modifications.
|
