Olympic Way Geotechnical Investigation Appeal Geotechnical Investigation Appeal

Olympic Way Geotechnical Investigation Appeal

Geotechnical Investigation Appeal We support Staff’s recommendation: • The City did not error in their CDP decision to approve the environmental report. • Staff reviewed the appeal using the Commission’s five analytical factors and reached a conclusion of no substantial issue. • The project does not result in a substantial issue of LCP conformance. • The appeal does not raise any new substantial issue not already considered by the City.

Proposed Geotechnical Investigation Purpose: 1. To further characterize and evaluate geotechnical hazards at the site as requested by both Daly City and the California Coastal Commission (CCC). 2. To obtain site subsurface data needed for preliminary foundation design, and percolation evaluation in accordance with Daly City Requirements (shallow borings and percolation test pits)

Soil Borings • 6 total • No significant vibrations from drilling • Est. two weeks for completion, each area will have a 70’ by 30’ exclusion zone set up only during active drilling – shown as red boxes

Exploratory Trench • Trench will be dug over course of several days, and observed/ logged for several additional days (approx. two weeks open before backfill) • No significant vibrations • Purpose is to look for cracking, adverse bedding, slip surfaces.

Test Pits • Purpose of infiltration testing per Daly City development permit requirement • 5’ by 5’

Investigation to be conducted during normal business hours M-F, 7 am to 5 pm. Thank you.

Exploratory trenching example Mud Rotary Drill Rig – Staff ~35 feet high Exclusion zone fencing