Mark PalumboMr. Palumbo has over forty years of hydrological experience. He has been involved in numerous ground water and surface water projects. His areas of expertise are hydrogeology, ground water hydrology, water resources, computer modeling, and well hydraulics. Within Colorado, he has constructed aquifer models, supervised the installation of municipal water wells, and conducted hydrogeologic and surface water projects. He is an expert on the technical aspects of Colorado water law. He has been involved in numerous ground water applications, surface water transfers, plans for augmentation, and water resource valuations.

Dave LipsonDavid S. Lipson, Ph.D., P.G., is a Principal Hydrogeologist specializing in groundwater and surface-water hydrology, groundwater-surface water interactions, water quality, fate and transport of contaminants including PFAS, groundwater remediation, geochemistry, and aquifer storage and recovery (ASR). Dr. Lipson brings more than 29 years of experience working in Colorado, throughout the U.S., and internationally, solving complicated water and environmental problems. He is an Adjunct Professor at Colorado School of Mines where he teaches Advanced Topics in Hydrogeology, and has served as a Visiting Professor at the Chinese Academy of Sciences in Nanjing. He is an editor of the widely-read scientific journal Groundwater, and serves on the Board of Directors of the Scientists and Engineers Section of the National Ground Water Association (NGWA).

Matt SeitzMr. Seitz specializes in groundwater field studies, hydrogeologic data analysis, data management, and project management. He began his career in water consulting at HRS in 1998 and has completed numerous groundwater and surface water projects throughout Colorado and the Rocky Mountain West. His areas of interest include aquifer testing, well design and construction observation, spatial analysis using Geographic Information Systems (GIS), groundwater modeling, and water rights engineering. His clients include municipalities, water districts, private well owners, farmers and ranchers, ditch companies, State and Federal agencies, HOA’s, and private natural resources companies.
Steve BarrettMr. Barrett has over twenty years of experience in the water resources field. Prior to working at HRS, he worked for the Colorado Division of Water Resources; Assistant Water Commissioner on the Animas River, Division 7 Durango Office; Engineering Technician for the Ground Water Supply Department, Denver Office; and Hydrographer, Division 1 Greeley Office. Through his work with the Colorado Division of Water Resources, Mr. Barrett developed a strong understanding of the priority system and how water rights are administered and accounted for in the State of Colorado. Since beginning work at HRS in 2008, Mr. Barrett has assisted clients with a variety of projects ranging from change of use cases and augmentation plan development to client water rights protection, water rights accounting, GIS/DB project development, water rights valuations, and water resources planning.
Peter BoddieMr. Boddie has over forty years of experience in hydrology through his involvement in water development, water rights, agricultural, mining, hazardous waste, and resource management projects. Since joining HRS Water Consultants in 1984, his primary responsibilities have been in the areas of water rights engineering, evaluation of agricultural water uses and historical consumptive uses, and general surface water and ground water hydrology.

Vance CamposMr. Campos has experience in creating groundwater computer models, contaminant fate and transport modeling, and environmental field investigations. He has worked on various modeling projects involving alluvial and sedimentary systems. He has specific expertise with modeling aquifer-stream interactions and the use of GIS to aid groundwater model creation. He has experience in data manipulation, computer programming, 3-D graphics, and geographic information systems. He has created multiple innovative methods to manipulate data. Also experienced in field studies including monitor well setting, well construction and aquifer testing.

Reid PolmanteerMr. Polmanteer has broad experience as a hydrogeologist and geologist. He has extensive field experience in oil & gas, environmental consulting, and water resources. Field experience includes drilling coordination and oversight, environmental sampling, well construction, water level surveys, and geology interpretation and sample logging. Mr. Polmanteer has further experience with database management, geologic, hydrologic, and geochemical data interpretation, conceptual modeling and geologic cross-section construction, GIS map construction, and stream depletion analysis.

Fern Beetle-MoorcroftMs. Beetle-Moorcroft has experience as a hydrogeologist and geophysicist in both the public and private sectors. She has field experience drilling and developing Denver Basin bedrock wells and alluvial wells, conducting pump tests, water quality sampling, and running geophysical surveys (both near surface and borehole). Most recently, she has worked to develop an early warning detection system for PFAS through the creation of a sampling plan and comprehensive data analysis. She has also worked extensively in the San Luis Valley for her master’s thesis, where she studied groundwater and surface water interactions along the Alamosa River using a combination of near surface geophysics (resistivity & seismic refraction) and numerical modeling (MODFLOW-SFR).

Ms. Beetle-Moorcroft has further experience with geologic, hydrologic, and geophysical data interpretation and statistical analysis, geologic cross-section construction, GIS map construction, and numerical modeling.

Gavin RachMr. Rach is an HRS Hydrogeologist specializing in hydrogeologic data collection and quantitative analysis of groundwater flow and transport problems. He has worked on numerous groundwater problems involving alluvial and bedrock aquifer regional studies for municipal clients, basin-wide unit response functions in water rights matters, and PFAS contaminant fate and transport. Mr. Rach has extensive experience using the industry-standard MODFLOW groundwater flow model and a suite of non-traditional modeling codes. Mr. Rach recently added the PEST suite of automated calibration codes to his modeling toolkit. Other areas of interest and expertise include spatial data analysis using Geographic Information Systems (GIS), field studies, water quality sampling, and high-end data processing.

Mitch Dorsk

Mr. Dorsk is HRS’s Western Slope specialist and has experience as a hydrogeologist for the public and private sectors. He also served as an abandoned mine lands field technician at the Bonita Peak Mining District (BPMD) Superfund Site, near Silverton, Colorado. His Master’s Thesis used in-situ geochemical parameters to trace acid rock drainage at a Superfund Site in Western Colorado. He applies his knowledge of Colorado Plateau and Western Slope geology, redox geochemistry, fluid dynamics, and GIS spatial analysis with field methods such as baseline water quality assessments, aquifer health monitoring, and atypical flow measurements to address complex water resource, water quality and water rights questions in Western Colorado and beyond.

In his spare time, Mr. Dorsk serves as the Chairman of the American Alpine Club – Western Slope and can be found adventuring throughout Western Colorado with his beloved aussie cattle dog, Obi-Wan Kenobi.

Katharina LoweKatharina Lowe joined HRS in 2021 to support the team in all water-related issues. Her background is in hydrogeology, and she is currently working on her PhD at the Technical University of Munich, Germany. Her experience includes groundwater flow and heat transport modeling with MODFLOW and FEFLOW, well drilling, soil and water sampling, and laboratory analysis. She also has increasing involvement in water rights issues.

Katharina is motivated by food. One of her weaknesses is chocolate.

Sophia PalumboSophia has been at HRS since the summer of 2018. She worked initially at HRS as a summer intern performing field technician and project support work. She became a full time HRS employee in November, 2020. Sophia graduated from the University of Portland with a Bachelor of Science degree in Environmental Science in 2019. At HRS she works on water supply and environmental ground water and surface water projects providing project support through data collection, review, and analysis; GIS mapping and spatial analysis; well, water quality, and surface water field work; and report preparation. Sophia appreciates the positive learning and career advancement environment that HRS fosters. Sophia is an avid downhill skier, gardener, and creative cook.

James BrownMr. Brown is a Staff Hydrogeologist at HRS. He graduated from the University of Texas at Austin with a BS in Petroleum Engineering in 2016 and then served as a Field Artillery Officer in the US Army for four years. He was stationed at Fort Campbell, Kentucky, as a member of the 101st Airborne Division (AASLT) for the duration of his service and completed one deployment to Syria in early 2019. After returning to the US, James decided to steer his career toward hydrogeology and is currently finishing a MS in Hydrology at Colorado School of Mines with an emphasis in groundwater modeling, fate and transport of contaminants, and geochemistry. James is passionate about solving complicated problems involving subsurface fluid flow. He is also passionate about playing outdoors with his two sons and exercise.

Tammi is HRS’ office manager.