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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