Clients & Projects Village of Carey, Ohio - Source water protection planning, wellfield resource optimization and nonpoint-source mitigation
Carey has a wellfield developed in Silurian dolomite, but affected by nearby very large quarries and shallow upper Silurian to Devonian karstic “ridge” carbonates vulnerable to surface effects. Work included development of a wellhead protection area delineation based on collecting local geological and hydrologic information and hydrogeologic analysis, and an associated management plan rather than having the OEPA do it for “free”. Information was integrated with CAD and electronic topo maps from several sources in our GIS system with SURFER, and modeling conducted using a MODFLOW-MODPATH package integrated with ArcView and SURFER.
Nonpoint-source water quality mitigation planning is in progress to keep nitrates below government MCLs without water treatment.
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What kind of work do we do? Here is an example:
Spencerville, Ohio – Source water delineation and testing and modeling for strategic water planning
Spencerville has a high-capacity carbonate-aquifer wellfield in a politically and technically sensitive aquifer setting (a designated sole-source aquifer) in which both public water suppliers and private-well owners maintain marginal ground water supplies. Work included analysis of studies by other consultants in the area and technical liaison with the state and neighboring communities, WHPA delineation using MODFLOW, based on detailed local data collection, well capacity testing and regional aquifer-scale testing to update the numerical model of the wellfield.
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