Monthly Operator Reports for Filtered Surface Water Systems

1. Monthly Operator Reports for Filtered Surface Water Systems Sustained Compliance Workshop - Anchorage, AK September 23-24, 2010 Eric Burg Kenai Peninsula & Southeast Alaska – Compliance & Monitoring Section DEC Drinking Water Program Eric.Burg@alaska.gov / (907) 262-5210 ext. 246

2. Presentation Outline • Introduction • Elements of an Operator Report & Reporting Requirements • Common Reporting Errors and Issues • Summary

3. Introduction

4. Introduction Continued • Monthly Operator Reports serve several functions • Primary function is it provides a way to track effectiveness of the filtration and disinfection system. • Provides a record of daily operational readings. • A means of reporting to DEC that all regulatory requirements have been met.

5. Introduction Continued • Different Types of Operator Reports • Conventional or Direct Filtration • 3 or more filters • Less than 3 filters • Alternate Filtration, Slow Sand, or Diatomaceous Earth • Standard report • Reduced Monitoring

6. IntroductionContinued System Information & Daily Readings Combined Filter and Disinfection Performance

7. IntroductionContinued Continuous Monitoring Summary CFE or IFE Turbidity Exceedance Report

8. Presentation Outline • Introduction • Elements of an Operator Report & Reporting Requirements • Common Reporting Errors and Issues • Summary

9. Elements of an Operator ReportPage 1 of Operator Report System Information and Daily Readings Page • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

11. Elements of an Operator ReportPage 1 of Operator Report Continued

12. Elements of an Operator ReportPage 1 of Operator Report Continued • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

15. Turbidity Reporting Requirements • Combined filter effluent (CFE) turbidity measurements • Taken after the point where all individual filter effluents combine. • Turbidity measurements are taken from grab samples or online turbidimeter recordings taken at four hour intervals. • Recorded on first page of operator report.

16. Turbidity Reporting Requirements Continued • CFE turbidity requirements • 95% of all CFE turbidity measurements taken during the month must be less than or equal to: • 0.3 NTU for Conventional and Direct filtration plants • 1.49 NTU for Alternative, Slow Sand, & Diatomaceous Earth plants

17. Turbidity Reporting Requirements Continued • Maximum CFE Turbidity limits: • 1.49 NTU for Conventional and Direct plants • 5 NTU for Alternative, Slow Sand, & Diatomaceous Earth plants • Must notify DEC within 24 hours if maximum CFE limit is exceeded. • Document on Page 2 of operator report.

18. Elements of an Operator ReportPage 1 of Operator Report Continued • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

21. Entry Point Chlorine Reporting Requirements • Residual readings collected daily at entry point to the distribution system • Sampling frequency is based on population #’s • 500 or fewer = 1 sample/day • 501 – 1,000 = 2 samples/day • 1,001 – 2,500 = 3 samples/day • 2,501 – 3,300 = 4 samples/day • 3,301 or greater and all other systems that monitor continuously • Must report lowest value each day

22. Entry Point Chlorine Reporting RequirementsContinued • Entry point chlorine residuals must be at least 0.2 mg/L at all times. • Some systems may have a higher entry point chlorine concentration requirement. • To meet contact time requirements. • Flow Characteristics • Turbidity levels

23. Entry Point Chlorine Reporting RequirementsContinued • If entry point residual drops below 0.2 mg/L • Contact DEC soon as possible - no later than the end of the next business day. • Date and duration below 0.2 mg/L must be recorded on page 2 of the operator report (Entry Point Disinfection Performance Criteria). • DEC will review if treatment technique violation was generated. • If chlorine level is raised above 0.2 mg/L within 4 hours, no violation will be assessed.

24. Elements of an Operator ReportPage 1 of Operator Report Continued • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

27. Filter Reporting Requirements • Did you filter & produce water during the day? • Check “Yes” or “No”

28. Elements of an Operator ReportPage 1 of Operator Report Continued • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

31. Fluoride Reporting Requirements • Measured daily at the entry point to the distribution system. • Entry point fluoride residual must not exceed 2.0 mg/L. • Notify DEC within 24 hours if fluoride residual is equal to or greater than 2.0 mg/L.

32. Fluoride Reporting RequirementsContinued • On the first day that the fluoride residual is > 2.0 mg/L, a confirmation sample must be collected and sent to a certified laboratory to verify field test results. • Public Notice requirements will be based upon certified laboratory sample results. • Circumstances may dictate otherwise.

33. Elements of an Operator ReportPage 1 of Operator Report Continued • System Information • Public Water System (PWS) Name • PWS ID # • Address • Phone # • Month & Year of report • Turbidity • Entry Point Chlorine • Filter • Fluoride • Operator Signature Line

35. Elements of an Operator ReportPage 1 of Operator Report Continued

36. Operator Signature Requirement • Must be signed in accordance with 18 AAC 80.1900 • The owner or operator shall certify by signature that the information and data contained in a report required to be filed under this chapter are true and correct to the best of the owner’s or operator’s knowledge.

37. Elements of an Operator ReportPage 2 of Operator Report Combined Filter and Disinfection Performance Page • Combined Filter Performance Criteria • Entry Point Disinfection Performance Criteria • Distribution System Disinfection Residual Criteria

39. Elements of an Operator ReportPage 2 of Operator Report continued • Combined Filter Performance Criteria • Entry Point Disinfection Performance Criteria • Distribution System Disinfection Residual Criteria

41. Combined Filter Performance Criteria

42. Combined Filter Performance CriteriaContinued

43. Combined Filter Performance Criteria

44. Elements of an Operator ReportPage 2 of Operator Report continued • Combined Filter Performance Criteria • Entry Point Disinfection Performance Criteria • Distribution System Disinfection Residual Criteria

46. Entry Point Disinfection Performance Criteria

47. Elements of an Operator ReportPage 2 of Operator Report continued • Combined Filter Performance Criteria • Entry Point Disinfection Performance Criteria • Distribution System Disinfection Residual Criteria

49. Distribution System Disinfectant Residual Criteria

50. Elements of an Operator ReportPage 3 of Operator Report Continuous Monitoring Summary Page • Conventional and Direct Filtration systems only • Combined filter effluent monitoring – less than 3 filters • Individual filter effluent monitoring – 3 or more filters