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Marion County Building Inspection commented: “Electrical permits would be required to be obtained prior to system alteration and/or installation, if proposed. Plumbing permit would also be required for any potable water system alteration or installation. If this plumbing system alteration or installation is upstream of the water treatment processing system, this water is not considered potable, thus a plumbing permit is not required according to the 2023 OPSC and the Marion County Plumbing Inspector.” Oregon Department of State Lands (DSL) requested inclusion of a general response which states in part: “A DSL removal-fill permit may be required for projects that add, remove, or move material to wetlands, streams, and other waters. In addition, DSL proprietary authorizations may be required for projects in Oregon-owned Waterways.” The rest of this comment is included in the case file. All other contacted agencies either failed to comment or stated no objection to the proposal. 6. The purpose of the Floodplain Overlay Zone is to promote public health, safety and general welfare to minimize public and private losses due to flood conditions. In order to ensure that the development is reasonably safe from flooding, the County requires the development to comply with the criteria and standards listed in Section 17.178.050 and 17.178.060 of the Marion County Code (MCC). 7. The property is in Marion County, but FEMA includes it in a Floodplain Insurance Rate Map (FIRM) for Linn County. This is primarily important to note because the elevations measured in Marion County utilize the NVGD1929 vertical datum and Linn County uses the NAVD1988 vertical datum. The Linn County Flood Insurance Rate Map #41043C0070G indicates that the development site is in an AE zone. Base Flood Elevations (BFE) are provided in this zone but vary across the subject parcel. Across the area in which the wells and associated facilities will be placed the BFE varies from 472.1’ to 483.5’ NAVD1988, or 468.7’ to 480.1’ NGVD 1929 according to FEMA data provided on FIRMs #41043C0070G & #417047C0725G. 8. Marion County Code 17.178.050 requires the following prior to any development in the Special Flood Hazard Area (SFHA): (C) Prior to obtaining a building permit the owner shall be required to sign and record in the deed records for the county a declaratory statement binding the landowner, and the landowner’s successors in interest, acknowledging that the property and the approved development are located in a floodplain. The recording of this declaratory statement has been a condition of approval in the past. The most recently recorded Floodplain Declaratory Statement for Geren Island was a condition of approval for FP16-005. That statement is recorded in Reel 3849, Page 24, in the Book of Land Records for Marion County. The criterion is met. (D) Prior to obtaining a building permit, commencing development or placing fill in the floodplain, the applicant shall submit a certification from a registered civil engineer demonstrating that a development or fill will not result in an increase in floodplain area on other properties and will not result in an increase in erosive velocity of the stream that may cause channel scouring or reduce slope stability downstream of the development or fill. The City of Salem provided a no-rise certificate and associated analysis performed by WEST Consultants, Inc. The included analysis confirms that the proposed improvements will not increase flood levels on other properties, nor will they increase the erosive velocity of the stream. The criterion is met. 9. Marion County Code 17.178.060 requires flood protection standards for development in the SFHA, the following standard applies to the proposal: (D). Anchoring. 1. All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. This criterion applies to the above ground piping, and the applicant has provided construction drawings indicating proper anchoring of all pipe. This shall be a condition of approval. (E) Construction Materials and Methods.