MAXIMUM CONE PENETROMETER READINGS
|SURFACE RESISTANCE (PSI)||SUBSURFACE RESISTANCE (PSI)|
(includes loamy sand, sandy loam, sandy clay loam, and sandy clay)
(includes loam, silt loam, silty clay loam, and silty clay)
(includes clay loam)
- Sites that are prime farmland, unique farmland, or farmland of statewide importance.
- Greenfield sites where development is prohibited by Section 402.8.
Exception: Soils shall be permitted to be imported from the locations in Items 1 and 2 where those soils are a byproduct of a building and building site development process provided that imported soils are reused for functions comparable to their original function.
- Areas shall be cleared of debris including, but not limited to, building materials, plaster, paints, road base type materials, petroleum based chemicals, and other harmful materials;
- Areas of construction-compacted subsoil shall be scarified; and
- The first lift of replaced soil shall be mixed into this scarification zone to improve the transition between the subsoil and overlying soil horizons.
Exception: Scarification is prohibited in all of the following locations:
- Where scarification would damage existing tree roots.
- On inaccessible slopes.
- On or adjacent to trenching and drainage installations.
- On areas intended by the design to be compacted such as abutments, footings, inslopes.
- Other locations where scarification would damage existing structures, utilities and vegetation being preserved.
Exception: Where the reference soil for a building site has an organic level depth other than 12 inches (305 mm), soils shall be amended to organic matter levels and organic matter depth that are comparable to the site’s reference soil.
- Documentation, such as receipts from a soil, compost and amendments supplier, to demonstrate that techniques to restore soil occurred; and
- Soil test results to demonstrate that the selected techniques achieved the criteria of Section 405.1.4.2. Not less than two soil tests shall be conducted on the building site. For building sites where more than 8,000 square feet (744 m2) of soil is to be disturbed during construction, there shall be not less than one report for every 4,000 square feet (372 m2) disturbed or report frequency as determined by the registered design professional.