• The subsurface effects of nuisance water injection shall be determined by the consultant. This includes potential for soil hydroconsolidation and daylighting (rising) water on and off site.
  • Mounding potential of discharged water should be determined.
  • The appropriate City guidelines should be utilized for design, construction and testing of the drywell (refer to Section V for further guidelines).
  • Site grading details and specifications shall be in the geotechnical report and on the grading plan. Typical items that would be discussed include, but is not limited to, the following:
  • Buttress key dimensions shall be indicated in the report and shown on the grading plan.
  • All subterranean drainage devices shall be shown on the grading plan.
  • Cut slopes converted to fill may require subdrains.
  • Filled major canyons require subdrains.
  • Subdrain material specifications shall be in the report.
  • Subdrain design (i.e., volume of filter material, pipe specifications, etc.) should be shown in the report.
  • Fill placement specifications should be presented and field guidelines for approval of over-excavation bottoms given.
  • The grading plan to be used for earthwork should be reviewed by the geotechnical consultant for conformance to their recommendations.
  • The grading plans submitted to the City should be wet ink signed and sealed by the design geotechnical consultant(s).

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