Tyee Core Area definition

Tyee Core Area means a location with geologic conditions including thick sandstone beds with few fractures. These sandstones weather rapidly and concentrate water in shallow soils creating a higher shallow, rapidly moving landslide hazard. The Tyee Core area is located within coastal watersheds from the Siuslaw watershed south to and including the Coquille watershed, and that portion of the Umpqua watershed north of Highway 42 and west of Interstate 5. Within these boundaries, locations where bedrock is highly fractured or not of sedimentary origin as determined in the field by a geotechnical specialist are not subject to the Tyee Core area slope steepness thresholds.
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Tyee Core Area means a location with geologic conditions including thick sandstone beds with few fractures. These sandstones weather rapidly and concentrate water in shallow soils creating a higher shallow, rapidly moving landslide hazard. The Tyee Core area is located within coastal watersheds from the Siuslaw watershed south to and including the Coquille watershed, and that portion of the Umpqua watershed north of
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Examples of Tyee Core Area in a sentence

  • The presence, as measured on site, of any headwall or draw in western Oregon steeper than 70 percent, except in the Tyee Core Area, where it is any headwall or draw steeper than 65 percent.

  • The proposed pipeline traverses the Tyee Core Area from approximately Milepost 6 to 55.

  • For example, the Tyee Core Area Oregon’s Coastal Range is an area of high landslide activity including both shallow and deep-seated landslides.

  • The department makes final high risk site designations based on ground measurements of slope steepness, observation of slope concavity, and on location in the Tyee Core Area.

  • For detailed information on the risks associated with clearcut harvesting on steep slopes in the Tyee Core Area, please refer to the following research paper: Robison, E.G., K.

  • Hazard mapping can delineate areas of similar or unique (for example, the Tyee Core Area or the Scottsburg Canyon) landslide hazard.

  • Portions of landslide-prone terrain determined by a geotechnical specialist and confirmed by ODF to be likely initiation site(s) of rapidly moving landslides (equal or greater hazard than a or b above).The Tyee Core Area is an area that studies indicate has higher susceptibility to rapidly moving landslides (Robison and others, 1999).

  • The Tyee Core Area is located within coastal watersheds from the Siuslaw watershed south to and including the Coquille watershed, and that portion of the Umpqua watershed north of Highway 42 and west of Interstate 5.

  • Because USGS maps tend to underestimate actual slope steepness, map- or ten- meter DEM-determined slopes steeper than 65 percent for most of western Oregon, and 60 percent in the Tyee Core Area (described later in this Technical Note) are considered likely to have high landslide hazard locations in the field.

  • Headwalls are typically located at the head of stream channels, draws, or swales.Headwalls have slope gradients of 65 percent or greater in the Tyee Core Area and 70 percent or greater in the rest of the state, as measured in the axis of the headwall.

Related to Tyee Core Area

  • CONE Area means the areas listed in Tariff, Attachment DD, section 5.10(a)(iv)(A) and any LDAs established as CONE Areas pursuant to Tariff, Attachment DD, section 5.10(a)(iv)(B).

  • ILUA Area means the geographical area in relation to which the Framework ILUA applies, as specified in Schedule 2 of the Framework ILUA;

  • Storage area means any location, facility, or vehicle which is used to store, to transport, or to secure a radiographic exposure device, a storage container, or a sealed source when it is not in use and which is locked or has a physical barrier to prevent accidental exposure, tampering with, or unauthorized removal of the device, container, or source.

  • stacked bicycle parking space means a horizontal bicycle parking space that is positioned above or below another bicycle parking space and equipped with a mechanical device providing floor level access to both bicycle parking spaces.

  • Drainage area means a geographic area within which stormwater, sediments, or dissolved materials drain to a particular receiving waterbody or to a particular point along a receiving waterbody.

  • Slum area means any area where dwellings predominate which, by reason of depreciation, overcrowding, faulty arrangement or design, lack of ventilation, light or sanitary facilities, or any combination of these factors, are detrimental to the public safety, health or morals.

  • mine site means the mining lease the accommodation area and other areas provided for the facilities of the Company in the vicinity of the mining lease;

  • Built-Up Area and/or “Covered Area” in relation to a Flat shall mean the floor area of that Flat including the area of balconies and terraces, if any attached thereto, and also the thickness of the walls (external or internal) and the columns and pillars therein Provided That if any wall, column or pillar be common between two Flats, then one-half of the area under such wall column or pillar shall be included in the built-up area of each such Flat.

  • Lease Area means the Lease Area as more particularly described in SCHEDULE C.

  • the LA area means the area in respect of which is the local authority.

  • Baseline area means any intra- state area (and every part thereof) des- ignated as attainment or unclassifiable under section 107(d)(1)(A)(ii) or (iii) of the Act in which the major source or major modification establishing the minor source baseline date would con- struct or would have an air quality im- pact for the pollutant for which the baseline date is established, as follows: equal to or greater than 1 μg/m3 (an- nual average) for SO2, NO2, or PM10; or equal or greater than 0.3 μg/m3 (annual average) for PM2.5.(ii) Area redesignations under section 107(d)(1)(A)(ii) or (iii) of the Act cannot intersect or be smaller than the area of impact of any major stationary source or major modification which:

  • Basal area means the effective surface area available to transmit the treated effluent from the filter media in a mound system into the in-situ receiving soils. The perimeter is measured at the interface of the imported fill material and in-situ soil. On sloping sites, only the area down-gradient from the up-slope edge of the distribution media may be included in this calculation.

  • Carpet Area means the net usable floor, area of an Flat/Apartment, excluding the area covered by the external walls, areas under services shafts, excluding balcony or verandah area and exclusive open terrace, but includes the area covered by the internal partition walls of the flat/apartment;

  • Basic Comprehensive User Guide means the Ministry document titled Basic Comprehensive Certificates of Approval (Air) User Guide” dated April 2004 as amended.

  • Underground area means an underground room, such as a basement, cellar, shaft or vault, providing enough space for physical inspection of the exterior of the tank situated on or above the surface of the floor.

  • Building means any structure used or intended for supporting or sheltering any use or occupancy.

  • Coverage Area means the area described in the Website for which Nearmap has available Products, which may cover part or all of that area and which may cover part (but not all) of the area covered by the Survey.

  • School premises means either of the following:

  • Double Phase Aerosol Air Freshener means an aerosol air freshener with the liquid contents in two or more distinct phases that requires the product container be shaken before use to mix the phases, producing an emulsion.

  • Building sewer means the extension from the building drain to the public sewer or other place of disposal.

  • Nonattainment area means an area so designated by the administrator, acting pursuant to Section 107 of the Act.

  • Modular building manufacturer means a person or corporation who owns or operates a

  • Customer’s Premises means the land and buildings owned or occupied by a Customer, and any land over which the Customer has an easement or right to pass electricity, including:

  • Building Square Footage or "BSF" means the square footage of assessable internal living space of a Unit, exclusive of any carports, walkways, garages, overhangs, patios, enclosed patios, detached accessory structure, other structures not used as living space, or any other square footage excluded under Government Code Section 65995 as determined by reference to the Building Permit for such Unit.

  • Customer Premises Equipment or "CPE" means equipment employed on the premises of a Person other than a Carrier to originate, route or terminate Telecommunications (e.g., a telephone, PBX, modem pool, etc.).

  • Parking space leasing data means the following government data on an application for, or lease of, a parking space: residence address, home telephone number, beginning and ending work hours, place of employment, location of parking space, and work telephone number.