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sensitive groundwater overlay zone shall be reviewed by the county to determine compliance with this chapter. The applicant hired Coffey Geoscience to conduct a hydrogeology review (review) in compliance with the requirements under MCC 17.181. The review found no evidence of presently declining water level trends over time or excessive and recent number of well Deepings or replacements in the aquifer within the study area. Marion County's peer reviewer, Russ Bunker, corroborated these findings. If approved, the applicant must meet the water level monitoring requirements in MCC 17.181. 120. This includes an approved water -level monitoring plan submitted to the county for peer review and is subject to approval by the county. The monitoring plan shall be approved and implemented before building permits are issued. A minimum of one observation well per 15 lots is required in each subdivision and at least one observation well is required for each phase of a subdivision. Monitoring shall begin at the state of development of Phase 1 of an approved subdivision. A report that includes an analysis of data collected to date shall be submitted to the county for peer review prior to approval of the next phase of development. Evidence of water level declines shall require preparation of a hydrogeology study prior to the release of the next phase of development if the county determines that the available data suggests that groundwater supplies may not be sufficient for additional development. Access easements that allow county and OWRD personnel to measure water levels shall be recorded with deed records for lots containing an observation well as a condition of approval of the subdivision. The requirement for a water -level monitoring plan will be made a condition of any approval 7. Roads. Streets and Easement: Standards for this section are listed in MCC 17.172.140 through 17.172.340 and include: 17.172.140 ENGINEERING STANDARDS AND REOUIREMENTS Engineering standards and requirements, including but not limited to streets, drainage, access, easements, and thoroughfare improvements, shall be those currently approved by the Marion County Department of Public Works. As outlined in their comments in #4 above, Marion County Land Development and Engineering will review all required street and roadway improvements as well as drainage and easements to assure compliance with their engineering standards. Their recommended conditions outline the improvements required and will be included as a condition of approval. 17.172.160 DEDICATION OR DEEDING OF ROADWAY No person shall dedicate for public use, or deed to Marion County, a parcel of land which is used or proposed to be used as a roadway without first obtaining the approval of the Board and delivering the deed to the Board for its endorsement. No dedication is effective unless the property is accepted by the Board and recorded with the Marion County Clerk's Office. 17.172.180 DEAD-END STREETS When it appears necessary to continue streets to an adjacent acreage, the streets shall be platted to the boundary or property line of the proposed subdivision without a turnaround. In all other cases, dead-end streets shall have a turnaround with a configuration approved by the Marion County Department of Public Works. Happy Way SE is a dedicated, unopened public right-of-way that connects Steiwer Road SE to Farmer Road SE. The preliminary plat shows improvements up to the southern property line of the subject parcel and does not propose a turnaround. 17.172.200 RADIUS AT STREET INTERSECTIONS The property line radius at street intersections shall be to the Marion County Public Works Department's standards. As outlined in their comments in #4 above, Marion County Land Development and Engineering has requested as a condition of approval that the applicant dedicate a 30-foot northeast property corner radius to achieve the standard for a Local Road. The applicant has shown this dedication on the preliminary subdivision plat. 17.172.220 STREET GRADES No street grade shall be in excess of 12% unless the Commission or Hearings Officer finds that, because of topographic conditions, a steeper grade is necessary. The Commission or Hearings