(SW records of the Inadequate verifications Treatment kept Process in the operating logs. Monitoring, If Recording, the variance and between the two Recordkeeping If readings for Surface is ever outside Water of the specified Treatment limits (0.1 Plants. mg/L or 15%, whichever is larger), the The online online chlorine chlorine is residual residual the analyzer should analyzer at the be calibrated PWS of entry to and re-checked. the distribution If this does not system was not bring the periodically readings within verified to the specified determine the limits, the need for system should with a calibration per grab contact the the manufacturer to requirements of troubleshoot the EPA Method problem. 334.0: Determination of Residual Chlorine in Drinking Water Using an Chlorine Analyzer. The online analyzer must be verified with a grab sample once every seven days and records of the weekly verifications kept in the operating logs. The continuous analyzer chlorine residual reading must be within 0.1 mg/L or
records of the verifications kept in the operating logs. If the variance between the two readings is ever outside of the specified limits (0.1 mg/L or 15%, whichever is larger), the online chlorine residual analyzer should be calibrated and re-checked. If this does not bring the readings within the specified limits, the system should contact the manufacturer to troubleshoot the problem. (SW If is the PWS with a grab Inadequate Treatment Process Monitoring, Recording, and Recordkeeping for Surface Water Treatment Plants. The online chlorine residual analyzer at the of entry to the distribution system was not periodically verified to determine the need for calibration per the requirements of EPA Method 334.0: Determination of Residual Chlorine in Drinking Water Using an Chlorine Analyzer. The online analyzer must be verified with a grab sample once every seven days and records of the weekly verifications kept in the operating logs. The continuous analyzer chlorine residual reading must be within 0.1 mg/L or
ss_tribal_form.docx