Or. Admin. R. 629-625-0100 - Written Plans for Road Construction
(1) A properly located, designed, and constructed road greatly reduces
potential impacts to water quality, forest productivity, fish, and wildlife habitat. To prevent improperly
located, designed, or constructed roads, a written plan is required in the sections listed below.
(2) In addition to the requirements of the water protection rules,
operators must submit a written plan to the State Forester before:
(a)
Constructing a road where there is an apparent risk of road-generated materials entering waters of the state
from direct placement, rolling, falling, blasting, landslide, or debris flow;
(b) Conducting machine activity in Type F, Type SSBT, Type D streams, Type
N streams, lakes, or significant wetlands;
(c) Constructing roads
in riparian management areas;
(d) Constructing or reconstructing
any water crossing, in all typed waters and lakes, bays, ponds, impounding reservoirs, springs, rivers,
streams, creeks, estuaries, marshes, wetlands, inlets, and canals, as described in OAR 629-625-0320 Water
Crossing Structures; or
(e) Constructing roads in critical
locations, as described in OAR 629-625-0200(3): Road Location.
(3) Operators shall submit a written plan to the State Forester before
constructing roads on high landslide hazard locations. Operators and the State Forester shall share
responsibility to identify high landslide hazard locations and to determine if there is public safety
exposure from shallow, rapidly moving landslides using methods described in OAR 629-623-0000 through 0300. If
there is public safety exposure, then the practices described in OAR 629-623-0400 through 0800 shall also
apply.
(4) In addition to the requirements of the water
protection rules, operators shall submit a written plan to the State Forester before placing woody debris or
boulders in stream channels for stream enhancement.
(5) In
addition to the written plan requirements of OAR 629-605-0170(12) and (13), the operator shall include an
assessment of the following factors in their written plan for all water crossings as described by OAR
629-625-0320:
(a) Operator transportation needs, road location, road
management objectives, and land ownership;
(b) The specific
resources that may be impacted by construction or reconstruction of the water crossing, including aquatic
species, habitats, and conditions; floodplain values, terrestrial species, and water uses;
(c) The specific risk factors at the watershed-scale, including geologic or
geomorphic hazards, event history, past and projected land management, crossing maintenance history, regional
channel stability, and projected watershed conditions over the life of the crossing structure;
(d) The specific risk factors at the site scale, including channel
stability, potential for blockage by debris, floodplain constriction, large elevation changes across
infrastructure, channel sensitivity to change, consequences of site failure to resources, and potential
stream geomorphic changes over the life of the crossing structure;
(e) The specific techniques and methods employed for resource protection;
and
(f) Additional information relevant to the proposed crossing
structure as determined by the State Forester.
(6)
Regarding water crossing structures for fills over 15 feet, if the conditions outlined in OAR
629-625-0320(1)(b)(B) are met operators shall submit a written plan to the State Forester.
(7) In addition to the written plan requirements in OAR 629-605-0170(12)
and (13), written plans for Type F and Type SSBT streams shall include the following:
(a) Stream name;
(b) Stream
size;
(c) Stream type;
(d) Stream basin;
(e) Watershed
tributary area;
(f) Calculated 100-year peak flow, developed
consistent with Forest Practices Technical Guidance under OAR 629-625-0300(3)(a);
(g) Measured stream gradient;
(h) Bankfull channel width;
(i)
Structure location;
(j) Structure type;
(k) Structure size, including but not limited to culvert diameter, rise,
span, length, and bridge width;
(l) Planned culvert grade or
elevation change;
(m) Planned culvert embedment depth
range;
(n) Planned culvert embedment material;
(o) Calculated structure flow capacity;
(p) Bridge freeboard, as applicable;
(q) Road name or number;
(r)
Road surface type;
(s) Drainage plan;
(t) Installation time frame;
(u) Equipment access;
(v)
Stream isolation method, including but not limited to stream diversions, bypasses, pumping; and
(w) Expected riparian management area tree removal.
Notes
Statutory/Other Authority: ORS 527.710(2) & Section 2(1), Chapter 33, Oregon Laws 2022
Statutes/Other Implemented: ORS 527.630(3), 527.765, 527.714 & Section 2(2), Chapter 33, Oregon Laws 2022
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