Water Resource Classification SystemOverall
- A maximum nitrogen load of 5 parts per million (ppm)
- Nitrogen loads greater than 5 ppm if there will be no adverse impact
on resources.
Drinking Water
- A maximum nitrogen load of 5 parts per million (ppm) unless a
cumulative impact analysis indicates a more stringent standard is needed.
- Only household quantities of hazardous wastes or materials allowed in
Wellhead Protection Areas
- Zone II state regulations apply in Wellhead Protection Areas.
- A maximum nitrogen load of 1 ppm in Potential Public Water Supply
Areas/ No development is permitted within 400 feet of an identified
future well site.
- Assessment of development impacts on nearby private wells required.
Coastal Embayments
- Must conform with critical nitrogen loads for marine ecosystems.
- No net increase in nitrogen loading where critical nitrogen loads have
already been exceeded or where there are marine water quality problems.
Ponds
- No subsurface wastewater disposal systems within 300 feet of
freshwater ponds.
- No net increase in nitrogen loading where critical nitrogen loads have
already been exceeded or where there are marine water quality problems.
Natural Resource Standards
- Turf and landscape managment plans required.
- Conversion from seasonal to year-round uses must protect sensitive
resources.
- Developments that withdraw more than 20,000 gallons of water per day
must protect groudnwater levels and adjacent surface waters and wetlands.
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Sewage Treatment Facility Standards
- Sewage treatment facilities limited to 10,000 gallons per-day capacity
in Wellhead Protection Areas unless remediating existing problems.
- Sewage treatment facilities must maintain the aquifer's hydrologic
balance and prevent ecological impacts to surface waters.
- Development in Growth/Activity Centers and Growth Incentive Zones may
be required to help pay for community wastewater facilities.
- Private sewage treatment facilities may be constructed only if no
public facilities are available within three years.
- Sewage treatment facilities must have tertiary treatment with
denitrification that meets 5-ppm total nitrogen concentration in the
effluent or groundwater.
- Private sewage treatment facilities cannot enable growth more dense
than local zoning allows.
- Private sewage treatment facilities must be consistent with municipal
capital facilities plans.
- Sewage treatment facilities cannot be built in specified sensitive
resource areas.
- Details regarding ownership, operation, maintenance, and replacement
of private sewage treatment facilities are required.
- Sewage treatment facilities must include a plan for sludge disposal.
Stormwater Management Standards
- No new direct discharge of untreated stormwater into marine and fresh
surface water and natural wetlands.
- Stormwater must be managed and infiltrated on site, attain an 80% TSS
removal, and be consistent with state Stormwater Guidelines.
- Non-structural design components required, but structural components
allowed in Growth Incentive Zones.
- Infiltration required to be at least two feet above high groundwater.
- Stormwater maintenance and operation plan required.
- Stormwater systems for land uses that have a high risk of
contaminating groundwater must use emergency shut-off devices in Wellhead
Protection Areas.
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