5.20.080 Land division – Subdivision review procedure.
A. Preliminary Subdivision Review Requirements and Report. Application requesting SHD to conduct a preliminary subdivision review is received from a certified on-site sewage disposal designer or professional engineer. Application is made on SHD form “Request for Preliminary Subdivision Review” and shall provide information as prescribed in WAC 246-272A-0320, Developments, Subdivisions, and Minimum Land Area Requirements.
1. At a minimum, the application must include the following:
a. Applicable review fees as prescribed in the most current SHD fee schedule under Subdivision of Property.
b. One copy of the preliminary plat map showing: scale, north arrow, proposed lot layout, proposed lot sizes, general dimensions of lots, easements, existing structures, location of all existing on-site sewage disposal systems and reserve areas, general contours, streams and surface water within 100 feet of the project site, proposed well sites, wells within 200 feet of the project site and location of preliminary soil test holes.
c. Preliminary large long plat soil review (lots five acre minimum) applications shall include a plat map showing the location, together with soil profile descriptions of the designer’s or professional engineer’s preliminary test pits. Backhoe pits as described in subsection (A)(3) of this section are to be provided for the Health District at the time of field review.
d. Proposed source of potable drinking water for each proposed lot.
2. Reference points must be identified on site for the purpose of identifying map locations in the field (i.e., traverse lines, identified in field, depicted on preliminary plat map).
3. Applicant’s certified designer or professional engineer will coordinate a detailed review of the site and soils with the Health District representative at which time backhoe pits or equivalent prepared and maintained in accordance with WAC 246-272A-0220(3) shall be provided.
a. A backhoe should be available on site for additional holes and to backfill pits after soil profiles have been recorded.
b. A minimum of one soil log per proposed lot must be provided for review.
c. Soil profile descriptions and locations are to be recorded by the designer or professional engineer who shall also show the location of test pits accurately on subsequent preliminary plat maps.
d. In accordance with WAC 246-272A-0220, the owner of the property or owner’s agent is responsible for constructing and maintaining the soil log excavation in a manner to prevent physical injury. The SHD recommends any excavation be done the same day as the soil logs are examined. Furthermore, the SHD recommends backfilling all soil test pits as soon as the soil logs are recorded, but not later than the end of the day that the logs are reviewed. SHD assumes no responsibility for test pit backfilling or uncovered test pits.
4. A copy of the preliminary plat map showing locations of soil log excavations is to be submitted prior to Health District preliminary plat recommendation to the lead agency.
5. If individual wells are proposed, WAC 246-272A-0320(2)(b) requires configuration of each lot to allow a 100-foot radius water supply protection zone to fit within the proposed lot lines or, if this is not possible, to establish a 100-foot protection zone around each existing and proposed well site.
6. If a new community/public well is proposed, an application for public well site inspection must be submitted, reviewed and approved by the Health District. Prior to final long plat approval the public water supply must be constructed and approved by the Health District and, when applicable, by the Washington State Department of Health.
B. Final Subdivision Review Requirements. Application requesting SHD to conduct a final subdivision review is received from a certified on-site sewage disposal designer or professional engineer with required information as prescribed in WAC 246-272A-0320 and SHDC Title 5. Application is made on SHD form “Request for Final Subdivision Review.”
1. At a minimum, the application must include the following:
a. Applicable review fees as prescribed in the most current SHD fee schedule under Subdivision of Property: Long Plat, Recording.
b. Two copies of the final plat map showing: scale, north arrow, final lot layout, lot sizes, dimensions of lots, roads, storm water control features, easements, existing structures, all existing on-site sewage disposal systems and reserve areas, general contours, streams and surface water within 100 feet of the project site, wetlands, native growth protection areas, proposed well sites, wells within 200 feet of the project site, and location of soil test holes.
c. Scaled site design for each proposed lot demonstrating sufficient area for on-site sewage system and reserve area, lot lines, easement lines, road locations, wells, surface waters, drainage features, sensitive areas, and features which may impact the placement of the on-site sewage system.
2. Lot corners must be surveyed and staked, all roads cut in and any storm water drainage system installed.
3. If individual wells are proposed, WAC 246-272A-0320(2)(b) requires configuration of each lot to allow a 100-foot radius water supply protection zone to fit within the proposed lot lines or, if this is not possible, to establish a 100-foot protection zone around each existing and proposed well site.
4. If a new community/public well is proposed the public water supply must be constructed and approved by the Health District and, when applicable, by the Washington State Department of Health.
5. If an existing public water supply will serve the subdivision, the water system expansion must be approved by the regulatory authority and a letter of availability from the water system purveyor must be submitted. [Prior code § 8.1.3 (Attachment)].