Changes

===Pollution Hot Spot Runoff===

===Pollution Hot Spot Runoff===

To prevent groundwater contamination, runoff from pollution hot spots should not be treated by bioretention facilities designed for full or partial infiltration. Filtration only facilities (with an impermeable liner) can be used.

To prevent groundwater contamination, runoff from pollution hot spots should not be treated by bioretention facilities designed for full or partial infiltration. No infiltration, "filtration only" facilities (with an impermeable liner) can be used.

 

===Proximity to Underground Utilities===

===Proximity to Underground Utilities===

Designers should consult local utility design guidance for the horizontal and vertical clearances required between storm drains, ditches, and surface water bodies.

Designers should consult local utility design guidance for the horizontal and vertical clearances required between storm drains, ditches, and surface water bodies.