Mountain Geology, Inc.
5158 Cochran Street
Simi Valley, CA. 93063
Phone: (805) 522-5174
Fax: (805) 582-1228
Business hours: Mon - Fri, 8:00 AM - 5:00 PM
Staff of Mountain Geology
![](assets/images/staff/jeff.jpg)
Jeffrey W. Holt
Owner / Principal Engineering Geologist
jeff@mountaingeology.com
![](assets/images/staff/she_user64.png)
Sue Holt
Office Manager
susan@mountaingeology.com
![](assets/images/staff/she_user64.png)
Chrissy Holt
Administrative Assistant