2007 Study Plan for the Walhonding Watershed (Richland, Ashland, Wayne, Morrow Knox, Holmes and Coshocton Counties, OH)
Ohio EPA/DSW/MAS-EAU 2007 Walhonding Watershed Study Plan May 9, 2007 2007 Study Plan for the Walhonding Watershed (Richland, Ashland, Wayne, Morrow Knox, Holmes and Coshocton Counties, OH) State of Ohio Environmental Protection Agency Division of Surface Water Lazarus Government Center 122 South Front St., Columbus, OH 43215 Mail to: P.O. Box 1049, Columbus, OH 43216-1049 & Monitoring and Assessment Section 4675 Homer Ohio Lane Groveport, OH 43125 & Surface Water Section Central District Office 50 West Town St., Suite 700 Columbus, OH 43215 & Surface Water Section Northwest District Office 347 North Dunbridge Rd. Bowling Green, OH 434o2 & Surface Water Section Southeast District Office 2195 Front Street Logan, OH 43138 1 Ohio EPA/DSW/MAS-EAU 2007 Walhonding Watershed Study Plan May 9, 2007 Introduction: During the 2007 field season (June thru October) chemical, physical, and biological sampling will be conducted in the Walhonding watershed to assess and characterize water quality conditions. Sample locations were either stratified by drainage area or selected to ensure adequate representation of principal linear reaches. In addition, some sites were selected to support development of Total Maximum Daily Load (TMDL) models or because they are part of Ohio EPA’s reference data set. Four major municipal and two major industrial NPDES permitted entities exist in the study area (Table 1). Beyond assuring that sample locations were adequate to assess these potential influences, the survey was broadly structured to characterize possible effects from other pollution sources. These sources include minor permitted discharges, unsewered communities, agricultural or industrial activities, and oil, gas or mineral extraction.
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