18df600c____Minnesota_Stormwater_Manual__1
[2] Under street infiltration trenches, vault storage to replace surface ponds, rest areas parking lots [3] Maintenance crew will need confined-space training [1] 
Use sub-grade storage with or without perforations to allow for storage and infiltration where drainage determined not to impact road structure
BMP options sheet for highway and road runoff management - Minnesota Stormwater Manual
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