O’Connor Environmental, Inc.

Geomorphology ▪ Hydrology ▪ Engineering Geology

P.O. Box 794, Healdsburg, CA 95448    (707) 431-2810   

Regulatory Response and Permits

· CEQA/NEPA Environmental Impact Analyses

· Cal. Dept. of Forestry Timber Harvest Plan Geology Reports

· Washington Department of Natural Resources / Cal. Dept. of Fish & Game 1600 Permits-Streambed

· Alteration Agreements & Enforcement Response

· Cal. Regional Water Quality Control Board Permits & Enforcement Response

· Sonoma County  Groundwater Reports  

· Water Scarce Areas

· Napa County Hydrology & Geology Reports

· US Army Corps of Engineers-Clean Water Act

· Sec. 401/404 Wetlands & Waters of the US

Fluvial Geomorphology

· Stream condition assessment

· Habitat & channel restoration

· Aquatic habitat analysis-salmon & steelhead

· Monitoring for erosion and sedimentation

· Sediment transport analysis

 

Hydrology

· Hydrogeologic assessment

· Stream & spring flow measurement

· Channel capacity and hydraulics

· Water balance/availability assessment

· Water rights

· Reservoir management

 

Engineering Geology

· Timber harvest plan geologic review

· Erosion source assessment & mitigation

· Stream bank stabilization

· Floodplain encroachment analysis

 

 

 

 

GIS

· Field GPS Surveys

· Design of custom electronic datasheets for field data collection

· Digitizing source media

· Hydraulic surface analysis from DigitalElevation models

· Database design and management(Access or ArcMap)

 

Watershed Science

· Cumulative effects analysis

· Sediment budgets

· Riparian zone planning & management

· Monitoring program design

· Statistical analysis of monitoring data

Our Services

Office Location: 433 Hudson St.          Mailing Address: PO Box 794,  Healdsburg, CA   95448                        Ph (707) 431-2810       Fax (707) 473-9050   

Text Box: OEI specializes in analysis of land management influences on geomorphology, water resources, and aquatic habitat. This requires application of our expertise in geomorphology, geology and hydrology in a variety of environmental settings ranging large rivers to small ephemeral channels to hillslopes. The approach to each project is developed with particular attention to specific project objectives and constraints. OEI has completed projects for a variety of public and private clients over the last 12 years. Public-sector clients include water agencies, resource conservation districts, and state regulatory agencies. Private clients include timber companies, ranch owners, and vineyards, and other engineering and environmental firms. Below is a list of our services with a brief list of work products for each discipline. Please click on the corresponding link above for greater detail regarding our expertise and previous work experience in any of these categories.

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