A. Information and studies for hazards shall be provided as follows.
2. For
having slopes of 10% or more, the following requirements shall be met. To ensure compliance with the provisions of this Code, prior to the issuance of a
for the construction of any new
(as defined by § 17.12.210B.8.) within the
, and prior to any grading, excavation or filling or other
modification within areas having a
of 10% or greater, there shall be submitted to the Community Development Department for review and approval, or approval with modifications:
a. A
(showing any grading, excavating or filling) drawn to scale of the entire property developed and of the proposed construction; and
b. The submission of a geological assessment and geotechnical report prepared and stamped by a Certified Engineering Geologist who is a registered geologist certified in the specialty of Engineering Geology under provisions of O.R.S. 672.505 to 672.705 and a Geotechnical Engineer under provisions of O.R.S. 672.002 to 672.325. The assessment and report shall address the entire
and meet the following requirements:
i. The geological and engineering assessment shall include information and data regarding the nature, distribution of underlying geology, and the physical and chemical properties of existing soils; an opinion as to stability of the
, and conclusions regarding the effect of geo-logic conditions on the proposed
.
ii. The geotechnical report shall include a comprehensive description of the
topography and geology; an opinion as to the adequacy of the proposed
from an engineering standpoint; and opinion as to the extent that instability on adjacent properties may adversely affect the project; a description of the field investigation and
; conclusions regarding the effect of geologic conditions on the proposed
; and specific requirements for plan modification, corrective grading and special techniques and systems to facilitate a safe and stable
. The report shall provide other recommendations as necessary, commensurate with the project grading and
.
iii. Address the requirements of § 17.8.310B.
B. Through hazard study(ies) required pursuant to § 17.8.310A., the
shall establish methods to minimize hazards to acceptable risks by:
1.
design approaches that avoids
within hazard area;
2. Grading, erosion control and other
preparation techniques to minimize hazard impacts;
3. Techniques to minimize impacts from utility installation; and/or
4.
and foundation techniques to minimize hazard impacts.
C. Where a hazard area is proposed to be avoided:
1. For divisions of land, the area shall be placed in an
tract separate from areas intended for
. The
tract is subject to the requirements of §§ 17.8.200 et seq.
2. For
not involved in a division of land, the area shall be held in common for residential condominiums or by the primary land owner for
or non-residential
. The area shall be placed within an
and adequate maintenance provisions shall be provided consistent with the requirements of § 17.8.200.
3. The tract or
area shall be restricted to
. Utilities may be located within the area provided that the report proposes acceptable measures to minimize hazard impacts.
tracts are subject to the provisions of § 17.8.200.
(Ord. 2009-01, passed 3-9-2009; Ord. 2013-3, passed 5-22-2013; Ord. 2016-16, passed 9-26-2016; Ord. 2017-07, passed 8-14-2017)