Thanks Duane, The Safe Drinking Water Act (SDWA) mandated drinking water limit is 500 mg TDS/L and 250 mg SO4/L. The Morgantown tap water in your survey was 231 mg TDS/L and 118 mg SO4/L. Cheat lake was very low in both: 62 and 32 mg/L TDS, SO4 respectively/L. To convert from specific conductance in the Mon to total dissolved solids (TDS), given its ion assembly, multiply by 0.65 and you’ll get a good approximation of TDS. But since you’re determining TDS directly, that isn’t necessary.

To put your data in tabular form:

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So, even under our currently low flow (<900 cfs) in the Mon, the samples are well below the (secondary) safe drinking water act limits for both TDS and sulfate. That’s good news. Your findings agree with the sampling that we do regularly under the 3RQ program. https://3riversquest.wvu.edu/data

Keep up the good work, pfz

/ Paul Ziemkiewicz, PhD Director, Water Research Institute West Virginia University 1272 Evansdale Drive Morgantown WV 26506-6064 304-293-6958 office pziemkie@wvu.edumailto:pziemkie@wvu.edu

From: Duane Nichols duane330@aol.com Sent: Tuesday, July 21, 2020 9:15 AM To: CLEAR@osenergy.org Cc: tball@mub.org; Christ, Martin J martin.j.christ@wv.gov; John M.S King John.M.S.King@wv.gov; Paul Ziemkiewicz paul.ziemkiewicz@mail.wvu.edu; Barry Pallay bpallay@comcast.net Subject: Lab Analysis from CLEAR — Cheat Lake & Mon River

Attached please find Lab Analysis results for three water samples, namely Cheat Lake, the Mon River, and MUB tap water all collected on the same day, June 11, 2020. On that date the Mon River TDS was exceeding 400 microsiemens per centimeter on the USGS monitor at Pt. Marion.

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Subject: Lab Analysis