5.20.070 Land division – Short subdivision review procedure.
A. Method A – Soil Survey.
1. Preliminary Short Subdivision Review Requirements and Report. An application requesting SHD to conduct a preliminary short subdivision review is received from a certified on-site sewage disposal designer or professional engineer. Application is made on SHD form “Request for Preliminary Short Subdivision Review” and shall provide information as prescribed in WAC 246-272A-0320, Developments, Subdivisions and Minimum Land Area Requirements.
a. At a minimum, the application must include the following:
(1) Applicable review fees as prescribed in the most current SHD fee schedule under Subdivision of Property: Short Subdivision, a) Preliminary Soil Survey.
(2) Two copies of the preliminary subdivision 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 soil test holes.
(3) Engineer or certified designer’s description of soil profile from at least two soil log test holes on each proposed lot. Soil log test hole identification, flagging, construction and maintenance as well as soil descriptions shall be consistent with the requirements contained in SHDC Title 5.
(4) Proposed source of potable drinking water.
b. Proposed lot corners are to be flagged and identified on site prior to SHD site review.
c. 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.
d. 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 short subdivision approval the public water supply must be constructed and approved by the Health District and, when applicable, by the Washington State Department of Health.
2. Final Short Subdivision Review Requirements. Application requesting SHD to conduct a final short 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. Application is made on SHD form “Request for Final Short Subdivision Review.”
a. At a minimum, the application must include the following:
(1) Applicable review fees as prescribed in the most current SHD fee schedule under Subdivision of Property: Short Subdivision, b) Final Review and Recording.
(2) Two copies of the final short subdivision 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.
(3) Description of soil profiles from five soil log test holes located in the proposed on-site sewage system primary and reserve area on each proposed lot. Soil log test hole identification, flagging, construction and maintenance as well as soil descriptions shall be consistent with the requirements contained in SHDC Title 5.
(4) Scaled site designs 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.
b. Lot corners must be surveyed and staked, all roads cut in, and any storm water drainage system installed.
c. 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.
d. If a new community/public well is proposed, the public water supply must be constructed and proven adequate. Approval by the Health District and, when applicable, by the Washington State Department of Health must be received prior to recording.
e. 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.
B. Method B – Individual Applications for On-Site Sewage Disposal Permit – Preliminary and Final Short Subdivision Review Process. Applications for on-site sewage disposal permit are submitted for each of the proposed lots by a certified designer or professional engineer.
1. Payment of applicable review fees as prescribed in the most current SHD fee schedule under On-site Sewage Disposal System Designs.
2. Application, design preparation, soil log test hole construction, identification, flagging and maintenance as well as soil descriptions shall be consistent with the requirements contained in SHDC Title 5
3. An as-built of any existing on-site sewage disposal system must be provided along with soil logs in the reserve area for any lot that has an existing dwelling.
4. Proposed lot corners are to be flagged and identified on site.
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 short subdivision approval the public water supply must be constructed. Approval by the Health District and, when applicable, by the Washington State Department of Health must be received prior to recording.
7. 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)].