COMPLIANCE INFO_1997-2002 - Laserfiche WebLink

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0 . 0 APPENDIX C ' GUIDE'SPECIFICATIONS FOR PLACEMENT SOF FILL AND•BACKFILL The guide specifications presented in this Appendix, together with the geotechnical report should be used in development of technical specifications for the project. The following sections of these guide specifications should be regarded as the minimum requirements to be included in the project specifications. 1) All filling and backfilling operations should conform with applicable local building and safety codes and to the rules and regulations of those governmental agencies having jurisdiction over the subject construction. The earthworks contractor is responsible to notify governmental agencies, as required, and the Project Soils Engineer at the initiation of grading, and any time that grading operations are resumed after an interruption. Each step of the grading should be approved in a specific area by the soil engineer and, where required, by the applicable governmental agencies before proceeding with subsequent work. 2) Prior to the start of grading, all debris, vegetation, deleterious materials, surface obstructions and loose unapproved fill shall be removed and disposed off site. Any existing irrigation, drainage or utility lines, or other abandoned subsurface structures shall be removed, destroyed or abandoned in compliance with specifications and recommendations from the Project Soils Engineer. 3) Within areas to receive fill or to provide structural support, all existing fill and dry porous (potentially collapsible) or loose native soils shall be excavated to expose dense, non -porous natural deposits of soil. 4) Where fill is placed on a sloping ground that is steeper than 20 percent, the ground to receive fill shall be prepared by proper keying and benching. Tile vertical and horizontal sizes of the keys and benches shall be determined by the Soils Engineer. In general, it shall be required that a keyway be constructed under the toe of the fill at least 10 feet in width, and fill be placed and compacted on nearly horizontal benches only. 5) The excavated areas shall be observed by a representative of the Project Soils Engineer prior to scarification and/or fill placement to evaluate if suitable materials have been exposed. 6) Fill, on site or import, shall consist of materials approved by the Soils Engineer. Fill shall be free of debris, organics and deleterious materials. Rock 3 inches or larger in IN 4OM-095.01 ft*--W7-Wjt- h yg-.d- 1 of 2