CITY PROJECT - 1821 & 1823 E Chestnut Ave - Plan

Home Browse Search

ASSOCIATED SOILS ENGINEERING, INC. Project No.: 7160.23 2860 Walnut Avenue, Signal Hill CA 90755 January 23, 2024 Tel: (562) 426 -7990 * Fax: (562) 426 -1842 Page 11 grading recommendations provided herein should be reviewed when final project concept and grading plans are available. It is assumed that the proposed finish grades will be close to the existing site grades (+one foot). 5.1 Site Preparation 5.1.1 Existing Improvements: Prior to grading operations, it will be necessary to remove any existing improvements, including any remaining buried obstructions, which may be in the areas of the Building. Structure removal should include foundations. Concrete flatwork and asphalt pavements should also be removed from the areas of proposed construction. Concrete and asphalt fragments from site demolition operations should be disposed of off-site, unless they can be stockpiled and processed to meet the specifications for Crushed Miscellaneous Base ("CMB"), Processed Miscellaneous Base ("PMB") or Pulverized Miscellaneous Base ("PMB") as outlined in Sections 200-2.4, 200-2.5 or 200-2.8, respectively, of the latest edition of the "Standard Specifications for Public Works Construction" (the Greenbook) and reused as approved fill or base material. 5.1.2 Surface Vegetation: Surface vegetation should be stripped from areas of proposed construction. Stripping should penetrate six (6) inches into surface soils. Any soil contaminated with organic matter (such as root systems or strippings mixed into the soil) should be disposed of off-site or set aside for future use in non-structural landscaped areas. Removal of trees and shrubs should include rootballs and attendant root systems. 5.1.3 Underground Utilities: Any underground utilities to be abandoned within the zone of proposed construction should be cut off a minimum of five (5) feet from the area of the Building. The ends of cut-off lines should be plugged a minimum of five (5) feet with concrete exhibiting minimum shrinkage characteristics to prevent water migration to or from hollow lines. Capping of lines may also be required should the plug be subject to any line pressure. Alternatively, deep hollow lines may be left in place provided they are filled with concrete or 2-sack control density fill (slurry fill). No filled line should be permitted closer than two (2) feet from the bottom of future footings unless it has been evaluated and approved by the Geotechnical Consultant. Please note that local ordinances relative to abandonment of underground utilities, if more restrictive, should be complied with.