18E.60.040 Volcanic Hazard Area Standards.
The following standards apply within the Inundation Zones for Case I, II, and III Lahars and within the Pyroclastic Flow Hazard Zone (refer to Table 18E.60.040):
A. Bonus densities, as set forth in Chapter 18A.35 PCC, Development Regulations – Zoning, shall be prohibited.
B. All essential facilities and hazardous facilities, as defined in Chapter 18.25 PCC, shall be prohibited, except sewer collection facilities and any other utilities that are located underground or not likely to cause harm to people or the environment if inundated by a lahar.
C. Special occupancy structures, as defined in Chapter 18.25 PCC, are subject to the following:
1. Travel Time Zone A. Special occupancy structures located within the Travel Time Zone A area shall be limited to a maximum 100 person occupancy.
2. Travel Time Zone B. Special occupancy structures located within the Travel Time Zone B area shall be limited to a maximum 500 person occupancy.
3. Travel Time Zone C. Special occupancy structures located within the Travel Time Zone C area shall be limited to a maximum 1,000 person occupancy.
4. Travel Time Zone D. Special occupancy structures located within the Travel Time Zone D area shall be limited to a maximum 5,000 person occupancy.
D. Covered assemblies, as defined in Chapter 18.25 PCC, are subject to the following:
1. Travel Time Zone A. Covered assemblies located within Travel Time Zone A area and which are located within the Case II lahar inundation zone shall be limited to 100 person occupancy and covered assemblies located within Travel Time Zone A which are outside the Case II lahar inundation zone, but within the Case I lahar inundation zone shall be limited to a maximum 400 person occupancy.
2. Travel Time Zone B. Covered assemblies located within Travel Time Zone B area and which are located within the Case II lahar inundation zone shall be limited to 500 person occupancy and covered assemblies located within Travel Time Zone B which are outside the Case II lahar inundation zone, but within the Case I lahar inundation zone shall be limited to a maximum 700 person occupancy.
3. Travel Time Zone C. Covered assemblies located within Travel Time Zone C area shall be limited to a maximum 1,000 person occupancy.
4. Travel Time Zone D. Covered assemblies located within Travel Time Zone D area shall be limited to a maximum 5,000 person occupancy.
|
Table 18E.60.040 Volcanic Hazard Area Standards |
||||
|---|---|---|---|---|
|
Facility/ Occupancy List |
Case I Lahar Inundation Zone |
Case II Lahar Inundation Zone |
Case III Lahar Inundation Zone |
Pyroclastic Flow Hazard Zone |
|
Bonus Densities (1) |
Not Allowed |
Not Allowed |
Not Allowed |
Not Allowed |
|
Essential Facilities (2) |
Not Allowed |
Not Allowed |
Not Allowed |
Not Allowed |
|
Hazardous Facilities (3) |
Not Allowed |
Not Allowed |
Not Allowed |
Not Allowed |
|
Special Occupancies (4) |
In Travel Time Zone A – Limited to 100 person occupant load. In Travel Time Zone B – Limited to 500 person occupant load. In Travel Time Zone C – Limited to 1,000 person occupant load. In Travel Time Zone D – Limited to 5,000 person occupant load. |
In Travel Time Zone A – Limited to 100 person occupant load. In Travel Time Zone B – Limited to 500 person occupant load. In Travel Time Zone C – Limited to 1,000 person occupant load. In Travel Time Zone D – Limited to 5,000 person occupant load. |
Not Allowed |
Not Allowed |
|
Covered Assemblies (5) |
In Travel Time Zone A – Limited to 400 person occupant load. In Travel Time Zone B – Limited to 700 person occupant load. In Travel Time Zone C – Limited to 1,000 person occupant load. In Travel Time Zone D – Limited to 5,000 person occupant load. |
In Travel Time Zone A – Limited to 100 person occupant load.(6) In Travel Time Zone B – Limited to 500 person occupant load. In Travel Time Zone C – Limited to 1,000 person occupant load. In Travel Time Zone D – Limited to 5,000 person occupant load. |
Not Allowed |
Not Allowed |
|
Other Occupancies |
No Limitation |
No Limitation |
No Limitation |
No Limitation |
|
(1) Bonus Density as set forth in Chapter 18A.35 PCC, Development Regulations – Zoning. (2) Essential Facility as defined in PCC 18.25.030. (3) Hazardous Facility as defined in PCC 18.25.030. (4) Special Occupancy structures as defined in PCC 18.25.030. (5) Covered Assemblies as defined in PCC 18.25.030. (6) Occupancy may be increased pursuant to the requirements of PCC 18E.60.050. |
||||