Welcome to OEI OEI provides consulting services in geology, hydrology and geomorphology. We have been working to solve landscape design problems, obtain permits and meet regulatory requirements of county, State and Federal agencies since 1996. Our office is located near the Russian River in Healdsburg, California where the vineyards of Sonoma County meet the redwood forest of the Coast Ranges. Flow gauging, Mendocino Co. Dry Creek, Sonoma County Our Services O'Connor Environmental, Inc. provides environmental consulting services to clients located primarily in Sonoma, Napa, Marin, Mendocino, Lake and Humboldt Counties in northern California.  We have clients throughout the Pacific Northwest. We are dedicated to providing our clients with an exception level of attention to detail and the specific circumstances relevant to their project. We provide solutions for ranches, timberland owners, vineyards, water resource agencies, local governments and watershed groups. The client needs we service include the following: ● Permitting: -1603 Stream alteration permits, Cal. Dept of Fish & Game -401/404 permits as required by the Army Corps of Engineers -Sonoma County PRMD Ground Water Reports -Water Rights, State Water Resources Control Board -Regional Water Quality Control Board ● Erosion control plans for vineyards and roads ● Timber Harvest Plans services include geologic reviews, and timberland conversion plans ● Watershed and landscape planning for Habitat Conservation Plans, Watershed Analysis and TMDL assessments. ● Slope stability and landslide hazards ● Stream monitoring and mitigation ● Stream bank stabilization and stream restoration ● Flood hazard assessment Professional services that we provide include: ● Training and education ● Expert witness ● Contractor supervision ● Engineering Geology (Licensed in California and Washington) ● Peer reviews ● Literature reviews Contact Information If you have any questions or think that we can be of service to you, please feel free to contact us. P.O. Box 794 Healdsburg, CA 95448 707-431-2810 Phone 707-473-9050 Fax Send an email to Matt O'Connor

Selected Project Site Locations, Northern California Russian River at Healdsburg, January 5, 2008. Flow ~ 10,000 cfs Turbidity Threshold Sampling, Soda Creek Flow ~ 10 cfs