NOTE: you have arrived at a step in the Design Sequence flow Chart. This flow chart is used to determine your performance goal. For more information see this link
Do the following conditions apply?
- There are very high infiltrating soils (more than 8 inches per hour) on the site;
- BMP relocation to an area with lower infiltration rates is not feasible; and
- The subgrade cannot be modified to slow the rate to less than 8 inches per hour.
PREVIOUS QUESTION and ANSWER
- Is Flexible Treatment Alternative No 1 feasible, allowing BMP to drain in 48 hours?