DevelopmentStandards | DevelopmentStandards—AdequacyofPublicFacilitiesandServices
recording, or other land use approval, as further specified in this chapter:
4. All plats, short plats, and binding site plans must be connected to public sewer and water.
a. Sewage disposal;
5. On-site sewage systems are prohibited in geological hazard areas including landslide and erosion hazard areas. 6. Development of parcels in the Tamarack and Inglewood plats shall comply with all provisions of this section and ensure adequate facilities both during and following construction. All facilities shall be maintained to their built condition for the life of the project. Applicants must demonstrate to the satisfaction of the City that there is adequate vehicle and pedestrian access, adequate access for fire and life safety, connecting to sewer where feasible, when a septic system is required planning for the design early in the project, adequacy of construction access and staging, and the adequacy of stormwater facilities to minimize erosion during and following construction.
b. Water supply;
c. Surface water management;
d. Streets and access;
e. Fire protection service; and
f. Schools.
2. All new development proposals and those that exceed 50% of the assessed value of improvements for building permits, plats, short plats, and lot line adjustments shall include a certificate of water availability and/or certificate of sewer availability to demonstrate compliance with this chapter and other provisions of the SMC, the City of Sammamish interim comprehensive plan, and the Growth Management Act. If water or sewer is not available from a water or sewer district the applicant shall provide verification from a water and sewer district along with information on when availability is expected in the future. Alternatives to public water and sewer service will be considered only if service from a water and sewer district is not available as defined in WAC 246- 272A-0025. 3. Regardless of the number of sequential permits required, the provisions of this chapter shall be applied only once to any single development proposal. If changes and modifications result in impacts not considered when the proposal was first approved, the City shall consider the revised proposal as a new development proposal.
C. Adequate sewage disposal
All new development shall be served by an adequate public or private sewage disposal system, including both collection and treatment facilities as follows:
1. A public sewage disposal system is adequate for a development proposal provided that:
a. For the issuance of a building permit, preliminary plat or short plat approval, or other land use approval, the site of the proposed development is or can be served by an existing disposal system consistent with the adopted sewer system plans of the Plateau water and sewer district and the Northeast Sammamish water and sewer district, and the disposal system has been approved by
342 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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