Environmental Engineers in Reno and Nevada


Dietrick McGinnis

Dietrick McGinnis PhD, PE, CEM

Dr. Dietrick McGinnis is the founder and president of McGinnis and Associates. In addition to being a Professional Engineer (PE, Environmental) and Nevada Certified Environmental Manager (CEM), Dr. McGinnis earned his PhD in Civil Engineering from the University of Nevada, Reno. Dr. McGinnis has over 25 years of experience in environmental consulting during which he has developed economic, energy, and environmental programs for both industry and government. His projects frequently include characterization and assessment, remediation design, stormwater program development, watershed and wetland restoration, and water and wastewater treatment. Over the years, he has been involved with government to government relation assignments including Tribal Governments, NRDA, and Superfund technical support. Dr. McGinnis has guided monitoring programs for water, soil, plants and air including mining, radiological and pesticide assessments and drinking water/wastewater treatment systems.

Sarah Peters

Sarah Peters EI, Environmental Specialist

Sarah Peters is the EI at McGinnis and Associates. Sarah received her BS in Environmental Engineering from the University of Nevada, Reno in 2011. As an undergrad, Sarah was a research assistant specializing in water quality and wastewater treatment. Before coming to McGinnis and Associates, Sarah gained a background in land-use planning and environmental permitting with federal, state and local governments.

Phil Oberlander

Phil Oberlander, PG (Oregon)

Phil Oberlander is the chief hydrologist at McGinnis and Associates. Mr. Oberlander is a project manager for groundwater modeling and provides technical support for document review and stream restoration. With McGinnis and Associates, Phil preforms groundwater resource evaluations, exploration well drilling, protection area modeling and monitor well construction. Prior to working with McGinnis and Associates, Phil independently modeled groundwater flow and contaminant transport for industrial clients to assess methodologies to remediate groundwater pollution, gaining extensive experience in hydrogeologic characterization and remedial design at U.S. EPA Superfund sites. As a research scientist at UNR’s Desert Research Institute, Phil developed interpretation methodology and collected borehole geophysical data to characterize hydraulic conductivity at monitor wells constructed at depths of 2,500 to 7,000 feet near underground nuclear testing sites. As a Program Director at Lawrence Berkeley National Laboratory, Phil was the coordinator of groundwater modeling in the unsaturated zone for the U.S. DOE Yucca Mountain High-Level Nuclear Waste Repository Project. Here he was the representative for LBNL to other National Laboratories, the USGS, and the U.S. DOE. Phil previously worked at Westec in Reno as the manager of the Hydrogeology Division for a 200-person consulting company. At Westec, Phil was responsible for staffing, marketing, quality, scheduling, and profit.

Earle C Dixon

Earle C. Dixon, MS, MPA, Senior Hydrogeologist-Scientist

Earle Dixon is a Senior Hydrogeologist-Scientist at McGinnis and Associates. Earle received his MS in hydrogeology with the Desert Research Institute (DRI) and University of Nevada Las Vegas in 1990. Mr. Dixon provides hydrogeologic data collection and interpretation; technical report writing and review; and senior project management for McGinnis and Associates. Earle has experience in sites that involve the geochemistry and transport of heavy metals and radionuclides in ground water. Throughout his professional career he has been involved with field data collection, monitoring, and reporting for projects involving: large Southwest USA open pit coal and copper mines; the former Nevada Test Site; Yucca Mountain; the Las Vegas Valley ground water basin; and legacy uranium mine and mill sites in AZ, NM, and UT. Earle has worked with the Navajo Nation involving San Juan Basin water rights and high priority uranium mine and mill sites for cleanup. He formerly worked as a Superfund site project manager with the State of NM in support to EPA Region 6 and the Grants Mining District Five Year Plan. Earle is 1975-78 veteran of the US Army, and a member of the Eastern Band of Cherokee Indians.

Dixon, Earle C. The Legacy of Uranium Mining and Milling Cleanup Plan: Evaluation of the EPA Five-Year Plan, Grants Mining District, New Mexico. 2015. School of Public Administration. University of New Mexico

Dixon, Earle C. Hydrogeology and Ground-Water Quality in the Sanders Area, Western Puerco River Basin, Arizona. May 1990. Department of Geoscience. University of Nevada, Las Vegas.

Megan Horan

Megan Horan

Megan Horan is Administrative Assistant and Office Manager at McGinnis and Associates. Megan received her BS in Public Health with a certificate in Gerontology from University of Nevada, Reno in 2006. Megan's positivity and drive brings a great energy to the McGinnis and Associates office. Her vision for administrative structure and organization have assisted in the redevelopment of our client support infrastructure. Megan manages the daily administrative tasks including financial matters such as client billing, accounts payable, payroll and banking. Human resource matters and business documentation are included under her supervision. Also, direct any administrative issues you have her way and she’d be happy to help you. You can reach Megan at 775-853-0449 x1x3, or mhoran@mcginnisandassociates.com