(SW winter Inadequate conditions Filtration the Design plant or disinfection Operation, process resulting is in not able to Inadequate achieve Treatment* 1.0 For log (this is a violation inactivation of of 141.719b4 Giardia at the first user. for systems that Therefore, receive the credit system for must additional resume conducting filtration and passing under the daily direct integrity tests does each on both membrane The skids to individual have receive the membrane higher its filtration own Giardia units are not removal equipped credits with a associated turbidimeter with that membrane continuously filtration. samples the individual filter effluent (IFE). Membrane units that do not (1) have an individual filter turbidimeter, and (2) are not continuously monitoring turbidity from each unit with a 0.15 NTU trigger for repeat direct integrity testing, are
winter conditions the plant disinfection process is not able to achieve 1.0 log inactivation of Giardia at the first user. Therefore, the system must resume conducting and passing daily direct integrity tests on both membrane skids to receive the higher Giardia removal credits associated with membrane filtration. (SW For does each have its own Inadequate Filtration Design or Operation, resulting in Inadequate Treatment* (this is a violation of 141.719b4 for systems that receive credit for additional filtration under the The individual membrane filtration units are not equipped with a turbidimeter that continuously samples the individual filter effluent (IFE). Membrane units that do not (1) have an individual filter turbidimeter, and (2) are not continuously monitoring turbidity from each unit with a 0.15 NTU trigger for repeat direct integrity testing, are
ss_wyoming_form.docx