Enter the total organic matter (lbs-BOD5/gal), the design flow (gal/day), and the area (ft^2) into the Organic Loading Rate Calculator. The calculator will evaluate the Organic Loading Rate.

OLR = OM*DF/A

Variables:

• OM is the total organic matter (lbs-BOD5/gal)
• DF is the design flow (gal/day)
• A is the area (ft^2)

To calculate the organic loading rate, multiply the organic matter by the design flow, then divide by the area.

1. First, determine the total organic matter (lbs-BOD5/gal).
2. Next, determine the design flow (gal/day).
3. Next, determine the area (ft^2).
4. Next, gather the formula from above = OLR = OM*DF/A.