2018-2-21 Revision Summary for Steering Committee Review

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CDP Section 4: Protect and Enhance Natural and Cultural Resources Policy 18: Amend and/or create County Codes and Planning Department Rufe-3 Mules to ^develop shoreline and building setbacks {fier-the H6n96k„^''^P A'^^^ ^^ r-eG ^+ the ^^"4^"+ 9eigh+ 4 the 4epe s ess thGn nn fee G n9iningung nn feet s^+H^, k sG4 ^ moi,,. 19),4 n9iningung 440 f ^+ p',,,. ^ address environmental, health, and safety "64{{ . 6'^+^Hwine4 9), ^ ^'^^i^^' ^ G'ysi-priorities. This shall A- Rly apply tE) PFE)PeFtieS that are lie-e-satedev.xithiR the SSIMA, and abUttiRg BF WithiR fi;.9P- h, Rdred acpci i vi cvvcri jai jai ca iccc BF icon, a is nere ine set as F "Re shall ew-rccc � -- -'-- ^- IM - ^^ ---'-i--' i - -'-i------ -'--- I— -- -t -'----1 ' -'-- ^- I--- - n n ■ Develop objective guidelines for determining and defining the "top of cliff"—." (HRS 205A-1, and HAR Section 13-222-2, Planning Department Rule 11.) and add references to "top of cliff" to Criteria for Shoreline Setback Variances in Planning Commission Rule 8. For setbacks on parcels with sea cliffs over 40' in elevation, the following setbacks are recommended: In addition to the minimum shoreline setback established by Plannina Dept. Rule 11, the building setback should include a lateral safety buffer distance of 40' from the minimum shoreline setback*, plus the distance equal to the average elevation of the cliff within the subject Parcel; or, b) In addition to the minimum shoreline setback established by Plannina Dept. Rule 11. the building setback should include a lateral safety buffer distance equal to the anticipated 100 Years of erosion as determined by a coastal erosion study. This study, including a cliff stability analysis and/or a geological analysis, shall be conducted by a licensed civil engineer. This policy shall only apply to properties that are located within the Special Management Area and abutting the shoreline. For lots with sea cliffs over 40' with an average lot depth of two hundred feet or less, the shoreline setback line shall be determined by Planning Department Rule 11. The County of Hawai'i's current working definition of "top of cliff" is as follows: The "top of the Pali" (top edge of the sea cliff) is defined to be the highest elevation along the seaward boundary of a property where the relative change in the slope of the terrain towards the sea is in excess of twice the general slope towards the sea of the terrain along this highest elevation and that the terrain: (1) has a Hamakua CDP: Recommended CDP Revision Summary February 2018