Oklahoma Administrative Code (Last Updated: March 11, 2021) |
TITLE 252. Department of Environmental Quality |
Chapter 656. Water Pollution Control Facility Construction Standards |
Subchapter 5. Sanitary Sewer Standards |
SECTION 252:656-5-1. Design capacity
Latest version.
- (1) Consider the maximum hourly domestic flow, industrial flow, inflow and infiltration and the topography regarding the slope and pumping needs.(2) Design for an average daily per capita flow of 100 gpd, which includes normal infiltration. Peak design flow must be based on an acceptable infiltration/inflow (I/I) study or, for new sewer extensions, the ratio of peak to average daily flow from a widely recognized engineering standard.(3) Exclude storm water from roof drains, streets and other areas.