Infiltration Basin Drain time Calculations

Project:Proposed Office BuildingComputed By:
Job #:3342-99-007Checked By:
Location:Jackson, NJDate:

NC

8/9/23

Revised:

02/10/2026

Basin Name: Prop. StormBrixx

Effective Depth of Runoff to be Infiltrated = Volume of Runoff to be Infiltrated / Surface Area of Infiltration Area = 7,267 cubic feet

3,040 square feet

2.39 feet

20 inches per hour

10 inches per hour

Effective Depth of Runoff to be Infiltrated / Design Recharge Rate = Time to Empty Basin =

2.87 hours**

*Note : Factor of Safety of 2 is applied to the Field Tested Recharge Rate to establish the Design Recharge Rate**Note : Time to Empty Basin must be less than 72 hours. Therefore; Drain time is less than 72 Hours, therefore, design is acceptable