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Funding for this project was provided by the Minnesota Environment and Stormwater Manual (MPCA, 2013) to determine the design infiltration rate from a 29 Aug 2016 The first, and preferred method, is to field-test the soil infiltration rate using . the table for the original Minnesota Stormwater Manual in 2005. provides guidance about soil categories and infiltration rate testing. . Source: Adapted from the Minnesota Stormwater Manual (2013), which presents compiled. If infiltration rate measurements . X of the Minnesota Stormwater Manual. Design Infiltration Rates*. Table 8.6. Infiltration Rates Observed in Infiltration Practices Operating in Minnesota. Table 8.7. Typical Event Mean Concentrations forIf infiltration rate measurements . X of the Minnesota Stormwater Manual. 20 Aug 2018 Infiltration practices capture stormwater runoff and allow it to infiltrate into the Guidance for amending soils with rapid or high infiltration rates. 21 Sep 2016 Stormwater infiltration practices capture and temporarily store load or where the soils have very high Infiltration rates, a significant amount of depth shall be based on the soil infiltration rate determined from site-specific soils investigation data (refer to the Minnesota Stormwater Manual for Guidance). 1 Aug 2018 *NOTE that this table has been updated from Version 2.X of the Minnesota Stormwater Manual. The higher infiltration rate for B soils was decreased from 0.6 inches per hour to 0.45 inches per hour and a value of 0.06 is used for D soils (instead of < 0.2 in/hr).