Mr. Woyshner is a principal engineer/scientist at Balance with more than 35 years of experience in surface and groundwater investigations, spanning a variety of projects primarily related to water resources and habitat needs. With an academic background in hydrogeology, soil behavior, forestry, and physical geography, Mark generally focuses on the technical and interdisciplinary aspects of a project, comprising a blend of traditional analyses and innovative field and modeling work. On a regular basis, he directs stream-gaging and sediment-transport projects for water-rights and/or anadromous-fish habitat compliance, evaporation and evapotranspiration studies for water-balance calibration, and a number of surface-groundwater interaction projects, mainly involving natural and managed recharge of sensitive habitat areas, or assessing the effects or large wells or wellfields on streamflow and riparian habitats. His talent for water-well siting, particularly in bedrock aquifers, has benefited public agencies, private-sector clients, and non-profit groups, not only in the evaluation of potential water-well sites, but also in field recommendations of where not to drill and when to stop drilling. In addition to applying relatively standard techniques to source or ‘fingerprint’ groundwater and stream baseflows, Mark has particular expertise in isotopic age-dating techniques. He is also a bit of a closet geek when it comes to dataloggers and monitoring instrumentation, deploying advanced soil-moisture, reference-evapotranspiration, and energy-balance systems, as well as standard stream-gaging and groundwater-monitoring techniques. Mark has considerable experience with CEQA and is especially skilled as a project manager with very good report writing and communication skills. He is co-founder of Balance Hydrologics in 1988. When he is not in the office or the field, Mark has a passion for old growth forests and wilderness areas, and now that his two children are grown young adults, he is finding more time in the evenings to play guitar and an occasional open mic.