Changes

#over-swelling clays or unstable subsoils,

#over-swelling clays or unstable subsoils,

#contaminated soils or sites with high risk of contamination from on-site activities,  

#contaminated soils or sites with high risk of contamination from on-site activities,  

#in flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups, and where LID BMPs have been found to be ineffective,

#in flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups,

#in areas where the ecology and natural hydrology are dependent upon surface water,

#in areas where the ecology and natural hydrology are dependent upon surface water,

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or