Unstable soils definition

Unstable soils means soils which by their physical nature are not suitable to support buildings, roads, utilities or other manmade development related improvements, or which have the potential for slope failure, erosion, or subsidence. Unstable soils include, but are not limited to, those areas defined as landslide hazard areas, erosion hazard areas, and seismic hazard areas, or other soils which have been determined by the public works director or the building official to be unsuitable for building foundations or structural support.
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Unstable soils means a portion of land that is identified by the Municipal Engineer as prone to slipping, sloughing, or landslides, or is identified by the U.S. Department of Agriculture Natural Resource Conservation Service methodology as having a low soil strength.
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Unstable soils means a portion of land that is identified by the
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Examples of Unstable soils in a sentence

  • Unstable soils are those that are too soft, provide low load bearing or are otherwise inadequate.

  • If a holder receives a payment that is less than its basis in the New CVR Interest, the holder may not be allowed a loss until it is determined that no further payments will be made.

  • Unstable soils and rock ledges should be sub-excavated from the bedding zone and replaced by suitable material.

  • Unstable soils and rock ledges should be sub-excavated from the bedding zone andreplaced by suitable material.

  • Unstable soils must be stabilized to minimize sedimentation by using appropriate erosion control measures such as seeding, using erosion control mats, and installing settling basins.

  • Unstable soils in the planning area primarily occur in areas of steep slopes and in areas of artificial fill or alluvial soils with shallow water tables that may lead to soil liquefaction during earthquakes.

  • Unstable soils can be subject to landslides, debris flows, and rock falls.

  • Unstable soils and geologic conditions have historically resulted from vegetation removal associated with wildfires, timber harvesting, mining, and grading as part of road building and site development.

  • Unstable soils should be removed and replaced with compacted structural fill as described in Section 6.3.

  • Unstable soils can create significant problems for pavements or structures (Figure 1).

Related to Unstable soils

  • Unstable area means a location that is susceptible to natural or human-induced events or forces capable of impairing the integrity of some or all of the landfill structural components responsible for preventing releases from a landfill. Unstable areas can include poor foundation conditions, areas susceptible to mass movements, and Karst terranes.

  • fissionable substance means any prescribed substance that is, or from which can be obtained, a substance capable of releasing atomic energy by nuclear fission.

  • chemical tanker means a ship constructed or adapted and used for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;

  • Underground injection means the subsurface emplacement of fluids through a bored, drilled or driven well; or through a dug well, where the depth of the dug well is greater than the largest surface dimension. (See also “injection well”.)

  • impermeable surface means a surface or pavement constructed and maintained to a standard sufficient to prevent the transmission of liquids beyond the pavement surface, and should be read in conjunction with the term “sealed drainage system” (below).

  • Contaminated soil means soil that meets all of the following criteria:

  • explosive actuated fastening device means a tool that is activated by an explosive charge and that is used for driving bolts, nails and similar objects for the purpose of providing fixing;

  • Tanks has the meaning set forth in Section 4.12(b).

  • noxious liquid substance means any substance designated in Appendix II to this Annex or provisionally assessed under the provisions of Regulation 3(4) as falling into Category A, B, C or D.

  • Friable asbestos material means any material that contains more than 1% asbestos by weight and that can be crumbled, pulverized, or reduced to powder when dry, by hand pressure.

  • Perfluoroalkyl and polyfluoroalkyl substances or “PFAS” means a class of fluorinated organic chemicals containing at least one fully fluorinated carbon atom.

  • Controlled dangerous substance means a drug, substance, or

  • Hazardous Substance Activity means any activity, event, or occurrence involving a Hazardous Substance, including, without limitation, the manufacture, possession, presence, use, generation, transportation, treatment, storage, disposal, Release, threatened Release, abatement, removal, remediation, handling of or corrective or response action to any Hazardous Substance.

  • Underground mining means all methods of mining other than surface mining.

  • High global warming potential hydrofluorocarbons means any hydrofluorocarbons in a particular end use for which EPA’s Significant New Alternatives Policy (SNAP) program has identified other acceptable alternatives that have lower global warming potential. The SNAP list of alternatives is found at 40 CFR Part 82 subpart G with supplemental tables of alternatives available at (http://www.epa.gov/snap/).

  • Underground facility means any item which shall be buried or placed below ground for use in connection with the storage or conveyance of water, sewage, electronic, telephone or telegraphic communications, electric energy, oil, gas or other substances, and shall include, but not be limited to pipes, sewers, conduits, cables, valves, lines, wires, manholes, attachments and those portions of poles and their attachments below ground.

  • Waterborne disease outbreak means the significant occurrence of acute infectious illness, epidemiologically associated with the ingestion of water from a public water system (PWS) that is deficient in treatment, as determined by the appropriate local or State agency.

  • Underground storage tank or “UST” means any one or combination of tanks (including underground pipes connected thereto) that is used to contain an accumulation of regulated substances, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground. This term does not include any:

  • Airborne radioactivity area means a room, enclosure, or area in which airborne radioactive materials, composed wholly or partly of licensed material, exist in concentrations:

  • Underground tank means a device meeting the definition of tank whose entire surface area is totally below the surface of and covered by the ground.

  • Airborne radioactive material means any radioactive material dispersed in the air in the form of dusts, fumes, particulates, mists, vapors, or gases.

  • Hazardous liquid means crude oil, refined petroleum products, liquefied petroleum gases, anhydrous ammonia, liquid fertilizers, liquefied carbon dioxide, alcohols, and coal slurries.

  • Residual disinfectant concentration means the concentration of disinfectant measured in mg/L in a representative sample of water.

  • Substances means chemical elements and their compounds in the natural state or obtained by any production process, including any additive necessary to preserve the stability of the products and any impurity deriving from the process used, but excluding any solvent which may be separated without affecting the stability of the substance or changing its composition;

  • Aboveground storage tank shall have the meaning ascribed to such term in Section 6901 et seq., as amended, of RCRA, or any applicable state or local statute, law, ordinance, code, rule, regulation, order ruling, or decree governing aboveground storage tanks.

  • Underground storage means storage of gas in a subsurface stratum or formation of the earth.