California's Water Efficient Landscape Ordinance (WELO) includes requirements for soil analysis. Here are some local soil analysis laboratories. When ordering a soil analysis, be sure to specifically request recommendations for organic or Bay-Friendly amendments. 

Waypoint Analytical (formerly Soil and Plant Laboratory, Inc.)
1101 S. Winchester Blvd., Suite G-173
San Jose, CA 95128
Phone: (408) 727.0330
Email: scspl@soilandplantlaboratory.com

Control Laboratories
42 Hangar Way
Watsonville, CA 95076
Phone: (831) 724-5422