(SW must System repair has a (SW (SW (SW (SW The The System plant's system has a Inadequate all potential operators SCADA flow is do potential Treatment meters violation not know as for not violation Process set up for to necessary to how alarm failing monitoring to when to Monitoring (UV (UV allow maintain properly for UV (UV an the for POE Surface direct identify chlorine operation an Water records monitoring event occurs residual Treatment at a of (greater the flow than Is Are point (greater that than is Plants. >40 >40 >40 40 40 rate event gpm gpm at and each UV) the this not prior to gpm) gpm) UV (141.720d5). report unit. it to two gpm) the UV)*. first (no user The online Are Does Does the the standard of the EPA water chlorine the (greater than 1st the language) (141.74c2). residual user 40 gpm UV). analyzer at (no standard of the of the 0.1 language) entry was not mg/L adequately how or when calibrated to an kept 15% and of of periodically flow one verified. The an chlorine residual at event the point of entry run is measured by time, event the surveyor lamp and using a handheld it to DPD device the UV varied substantially from the UVT reading by and the online UV analyzer. According to EPA Method 334.0: of Residual Chlorine in Drinking Water Using an On-Line Chlorine Analyzer; during routine calibration checks of the online
must repair all flow meters as necessary to allow for direct monitoring of the flow rate at each UV unit. (SW (UV >40 gpm) Are kept of flow run time, lamp UV UVT and UV System has a potential violation for failing to maintain UV operation records (greater than 40 gpm UV) (141.720d5). (SW (UV >40 gpm) Does the how to an event and it to the The system operators do not know how to properly identify an event and report it to the EPA (greater than 40 gpm UV). (no standard language) (SW (UV >40 gpm) Does the when an event The plant's SCADA is not set up to alarm when an event occurs (greater than 40 gpm UV)*. (no standard language) (SW Is this the 1st user of the System has a potential violation for monitoring the POE chlorine residual at a point that is not prior to the first user of the water (141.74c2). (SW Are the two 0.1 mg/L or 15% of one is Inadequate Treatment Process Monitoring for Surface Water Treatment Plants. The online chlorine residual analyzer at the of entry was not adequately calibrated and periodically verified. The chlorine residual at the point of entry measured by the surveyor using a handheld DPD device varied substantially from the reading by the online analyzer. According to EPA Method 334.0: of Residual Chlorine in Drinking Water Using an On-Line Chlorine Analyzer; during routine calibration checks of the online
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