Field Office Compliance - Assistance

Assistance ID - 72798
Osceola Water Works - 310338248
2320 WEST CLAY STREET Osceola, IA 50213
Clarke County

FO 5

Report
File Name File Type File Date Note
Comments
9/5/2014 Brandon reported the trends were being kept for 190 days, not five years. It's fixed now. The output span has also been changed. They will be working on how best to store/display the raw data without having to just keep going back and back and back on the trends. JANET GASTINEAU
9/5/2014 From: Gastineau, Janet [DNR] Sent: Friday, September 05, 2014 9:20 AM To: Osceola Water Works; OSCEOLAWATER DEPARTMENT (osceolawater@wildblue.net) Subject: information from phone call yesterday Importance: High I’m sorry the report is taking me longer to put together than I hoped, but I am glad you are working on a few of the things we talked about. Just to emphasize some of the items you called about last week: 1. I attached the plan I was talking about. Keep the IDSE with it and adapt this template to meet your needs. The cover page has places to acknowledge review dates. 2. To avoid “capping” of data to SCADA, the output span should be at least 0 to 5.1 NTU. 3. The online instrumentation calibration protocol includes: • Method of calibration • Calibration frequency • Calibration standards • Documentation • Data collection • Data reporting Just detail in a plan/outline how these will be accomplished for compliance on line instrumentation for the turbidimeters. The rule for plant shut down is 567 IAC 43.5(2)“b” b. Disinfection system. The disinfection system must include: (1) Redundant components, including an auxiliary power supply with automatic start-up and alarm to ensure that disinfectant application is maintained continuously while water is being delivered to the distribution system, or (2) Automatic shutoff of delivery of water to the distribution system whenever there is less than 0.3 mg/L of residual disinfectant concentration in the water. If the department determines that automatic shutoff would cause unreasonable risk to health or interfere with fire protection, the system must comply with 43.5(2)“b”(1). c. Residual disinfectant entering system. The residual disinfectant concentration in the water entering the distribution system, measured as specified in 43.5(4)“a”(5) and 43.5(4)“b”(2), cannot be less than 0.3 mg/L free residual or 1.5 mg/L total residual chlorine for more than four hours. JANET GASTINEAU
State of Iowa DNR Home Site Policy
Leading Iowans in caring for our natural resources
Version: 2.3.1.23706
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