Yes, for passive (non-concentrated) infiltration only.

Not usually. However, further expediting supplemental reports for projects under construction can be considered. It’s recommended to discuss with the grading division reviewers at the time of submittal.

Yes. A completed GPI report may be obtained from the Records Section or Grading Division.

GPI waivers may be granted by the district grading inspector on a case by case basis. Waivers are generally not granted for deepened foundations, slopes 3:1 (H:V) or steeper, swimming pool, or retaining walls over 6 feet in height.

In general, infiltration is not allowed within a Hillside Grading Area. However, consideration can be given for properties where slopes won't be impacted.

In general, infiltration is not allowed within a potentially liquefiable hazard zone. However, sites within a potentially liquefiable zone can be considered for infiltration if a soils report demonstrates that the site is not subject to liquefaction.

The Department does not recommend or endorse consultants. The Department does maintain a roster of approved testing agencies on the web site, which contains soil laboratories and geotechnical companies.

The Department does not recommend or endorse consultants. The Department does maintain a roster of approved testing agencies on the web site, which contains soil laboratories and geotechnical companies.

A grading permit may be required depending on the scope of the project. Permits are almost always required in the Hillside Grading Area. Please contact the Grading Division.