§ 24.15.240. Wells—New and replacement.

New or replacement wells serving an approved individual use are allowed within geologic hazard areas and associated buffers, as specified in Table 24.15-1, provided that:

A.

There is not minimally sufficient area on the property outside the hazard area and/or buffer to accommodate the well, as determined by the approval authority; and

B.

New on-site wells shall be consistent with the applicable provisions of Article III of the Rules and Regulations of the Thurston County Board of Health Governing Water Supplies; and

C.

If a landslide or marine bluff hazard area is present on the site, the approval authority may require the applicant to demonstrate that the drilling will not destabilize the slope; and

D.

Vegetation removal shall be consistent with this chapter; and

E.

Pumphouses, wellhouses and any associated structures shall be located outside of geologic hazard areas and their associated buffers.

Table 24.15-2. Critical Facilities for Thurston County

Occupancy Category	Nature of Occupancy
IV. Essential	Hospitals and other medical facilities having surgery and emergency treatment areas
	Fire, rescue and police stations and other emergency vehicle garages
	Water treatment facilities required to maintain water pressure for fire suppression
	Designated earthquake, hurricane or other emergency shelters
	Designated emergency preparedness, communication, and operation centers and other facilities required for emergency response
	Power-generating stations and other public utility facilities required as emergency backup facilities for essential facilities
	Aviation control towers, air traffic control centers, and emergency aircraft hangars
	Structures containing sufficient quantities of toxic materials or explosive substances to be dangerous to the safety of the general public if released
	Buildings and other structures having critical national defense functions
III. Hazardous	Buildings and other structures where more than 300 people congregate in one area
	Buildings and other structures with elementary school, secondary school, or day care facilities with an occupant load > 250
	Buildings and others structures with an occupant load greater > 500 for colleges or adult education facilities
	Health care facilities with an occupant load of 50 or more resident patients but not having surgery or emergency treatment facilities
	Jails and detention facilities
	All structures with occupancy load > 5,000
	Power-generating stations, water treatment for potable water, waste water treatment facilities and other public utility facilities not included as an essential facility, above
	Buildings and other structures not included as an Essential Facility, above, containing sufficient quantities of toxic or explosive substances to be dangerous to the public if released

 

Table 24.15-3. Erosion Soils of Thurston County

Soil Survey of Thurston County, 1990
Map Symbol	Soil Name	Percent Slope	Water Erosion Hazard
4	Alderwood gravelly sandy loam	30—50%	severe
8	Baldhill very stony sandy loam	30—50%	severe
10	Baumgard loam	40—65%	severe
12	Baumgard-Pheeney complex	40—65%	severe
13	Baumgard-Rock outcrop complex	40—65%	severe
30	Dystric Xerochrepts	60—90%	severe
35	Everett very gravelly sandy loam	30—50%	severe
49	Jonas silt loam	30—65%	severe
53	Kapowsin silt loam	30—50%	severe
61	Mal clay loam	30—65%	severe
63	Mashel loam	30—65%	severe
80	Pheeney gravelly loam	30—65%	severe
81	Pheeney-Baumgard complex	30—65%	severe
82	Pheeney-Rock outcrop complex	40—65%	severe
83	Pheeney-Rock outcrop complex	65—90%	severe
91	Rainier clay loam	30—65%	severe
96	Rock outcrop-Pheeney complex	40—90%	severe
119	Tenino silt loam	30—60%	high
122	Vailton silt loam	30—65%	severe

 

(Ord. No. 14773, § 3(Att. B), 7-24-2012)