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13.08.030 Preliminary plat map-Data required. Each preliminary plat map shall show the contour lines and approximate location of soil log holes.These holes must be flagged for easy location. (Res. 72-69 Reg. 11 § 3, 1972). 13.08.040 Soil logs- Number and depth. A minimum of one soil log for each five acres shall be dug to a depth of seven feet. (Use separate sheet to report data.)This work shall be done by a soil tester-designer licensed in Kittitas County. (Res. 72-69 Reg. 11 §4, 1972). 13.08.050 Use with community water supply- Lot area. When a private septic tank system is planned in conjunction with a community water system, each lot supporting a single-family dwelling shall have a minimum of twenty-two thousand square feet(approximately one-half acre). (Res. 72-69 Reg. 11 § 5, 1972). 13.08.060 Lots below minimum area- Public system required. Any lot less than twenty-two thousand square feet (approximately one-half acre) must be serviced by an active public sewer system or other sewage disposal system approved by the health department. (Res. 72-69 Reg. 11 § 6, 1972). 13.08.070 Wells and septic tanks on same lot- Lot size. The minimum lot size shall be forty-three thousand five hundred sixty square feet (approximately one acre)where individual wells and septic tank systems are located on the same lot. Exception to this requirement shall be limited to zoning districts which allow one residential lot per gross acre in a platted subdivision. (Res. 72-69 Reg. 11 § 7, 1972). 13.08.080 Low mean ground water level unacceptable. In lots that have low mean ground water levels less than four feet from the top of the ground shall not be considered satisfactory for individual sewage disposal systems unless the Health Officer obtains detailed site plans and approved OSS designs prior to final approval of subdivisions proposals to mitigate risks 13.08.090 Recording plat-Conditions precedent. Prior to recording of a plat, the following shall apply: 1. Where public water is available within one-half mile or less of any proposed plat, water shall be provided by this means. A letter from the water district, city or other stating that arrangements have been made to supply the plat must be attached.This provision shall not apply to the Airport Overlay. 2. When a community water supply is to be provided, detailed drawings of a water distribution system shall be submitted. A well shall be constructed, a pump and storage tank shall be installed, and a letter from the Washington State Department