San Francisco Building Inspection Commission Codes § 13.2 Pre-Construction Monitoring

The GEOR should develop a plan for preconstruction monitoring of adjacent buildings and improvements. The GEOR should request that the shoring and dewatering contractor(s) evaluate the effects of lowering of the groundwater on adjacent structures and improvements, and define the allowable drop in groundwater level outside of the excavation. The allowable lowering of the groundwater elevation should account for the duration of the anticipated constructionrelated change in the groundwater level. The GEOR should request that the dewatering contractor prepare for review and approval a plan of action in case the groundwater table drop below the contractor’s specified limit.