1. WESTERN STATES SURVEYING 899 W Foothill Blvd Ste E, Monrovia, CA 91016 Coordinate: 34.15142,-118.0183 Phone: (626) 357-5144
2. Ledco Surveys 120 Grand Ave, Monrovia, CA 91016 Coordinate: 34.15213,-117.99443 Phone: (626) 445-3326