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− | Determine whether the infiltration practice must comply with the [https://stormwater.pca.state.mn.us/index.php | + | Determine whether the infiltration practice must comply with the [https://stormwater.pca.state.mn.us/index.php?title=Construction_stormwater_program MPCA Construction Stormwater General (CSW) Permit]. Check with local officials, Watershed management Organizations (WMOs), and other agencies to determine if there are any additional restrictions and/or surface water or watershed requirements that may apply. |
− | Check with local officials, Watershed management Organizations (WMOs), and other agencies to determine if there are any additional restrictions and/or surface water or watershed requirements that may apply. | ||
{{alert|If the infiltration practice must comply with the CSW permit, the following prohibitions apply: | {{alert|If the infiltration practice must comply with the CSW permit, the following prohibitions apply: | ||
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**outside of an ERA within a DWSMA classified as having high or very high vulnerability, unless a regulated MS4 Permittee performed or approved a higher level of engineering review sufficient to provide a functioning treatment system and to prevent adverse impacts to groundwater; and | **outside of an ERA within a DWSMA classified as having high or very high vulnerability, unless a regulated MS4 Permittee performed or approved a higher level of engineering review sufficient to provide a functioning treatment system and to prevent adverse impacts to groundwater; and | ||
*areas where soil infiltration rates are more than 8.3 inches per hour unless soils are amended to slow the infiltration rate below 8.3 inches per hour.|alert-danger}} | *areas where soil infiltration rates are more than 8.3 inches per hour unless soils are amended to slow the infiltration rate below 8.3 inches per hour.|alert-danger}} | ||
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+ | [[Category:Level 3 - Best management practices/Structural practices/Infiltration (trench/basin)]] | ||
+ | [[Category:Level 3 - Best management practices/Specifications and details/Design criteria]] |
Determine whether the infiltration practice must comply with the MPCA Construction Stormwater General (CSW) Permit. Check with local officials, Watershed management Organizations (WMOs), and other agencies to determine if there are any additional restrictions and/or surface water or watershed requirements that may apply.
This page was last edited on 3 December 2022, at 22:43.