For context for this table, refer to Vol II–5.3.2 Determine Infiltration Feasibility, particularly Step 3: Conduct Infiltration Testing.

Table II-5.5. Minimum Measured Infiltration Rates.

Infiltration BMP	Minimum Measured Infiltration Rate for List Approach (in/hr)	Minimum Allowed Measured Infiltration Rate for Meeting Flow Control, Runoff Treatment, and LID Performance Standards (in/hr)
Infiltration Trenches	5	5
Drywells	5	5
Bioretention without underdrain	0.3	0.3
Bioretention with underdrain	0.3	No minimum
Rain Gardens	0.3	Not applicable (only for On-Site List Approach)
Permeable Pavement	0.3	0.3
Perforated Stub-out Connections	0.3	Not applicable (only for On-Site List Approach)
Infiltration Basins	Not applicable	0.6
Infiltration Chambers	Not applicable	0.6