06-I Water Production Study - Laserfiche WebLink

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The Texas Optimizafion Program recognition criteria establishes the following reporting requirements: For each clarifier/sedimentarion basin • total number turbidity readings • number of settled water readings above 2.0 M'il • percentage of settled water turbidity reading above 2.0 NT[J • number of settled water readings above 5.0 NTU • maximum turbidiry level recorded • minimum turbidity level recorded For each filter (excluding any data collected during the first 30 minutes following a backwash ~ cycle) • total number turbidity readings • number of filtered water readings above 0.1 NN • percentage of filtered water turbidity readings above 0.1 NTU • number of filtered water readings above 0.5 NTU • maximum turbidity level recorded • muumum turbidity level recorded For each filter profile: • date that the special study on post-backwash turbidity profile was iniriated • maximum turbidity level recorded during the first 30 minutes of filter run • turbidity level exactty 15 minutes after the filter is retumed to service • turbidity level exac[ly 30 minutes after the filter is retumed to service • maximum turbidiry level recorded during the remainder of the filter run For raw and finished water. • daily raw water turbidity • fuushed water turbidity every 4 hours The program requires at least once each month, a post-backwash turbidiry profile be conductedoneachfilter. Duringthisprofile,theturbidity data must be collected duringo the entire filter run usina a on-line turbidimeter with a continuous recorder. For the first 30 minutes of the fil[er run, data must be collected at one minute intervals. After 30 minutes, the sampling must be conducted at least once every 15 minutes. The program also recommends the following additional monitoring: • The pH and alkalinity of raw water entering the plant should be monitored once every four hours. •'The pH and alkaluuty of the effluent ofthe rapid mix (or at some other sitejust ahead of coagulant addition) should be monitored every four hours. • The pH at a point locatedjust after pH adjushnent (for example, just after lime, soda ash, or caustic addition) to be monitored every four hours. The program allows the use ofon-line particle counters or particle monitors iriscead ofon-lina turbidity meters provided that the participant is able to demonstrate that the particle count nwnbers for their particulaz plant is equivalent to a turbidity of less than 0.1 NTU. It is srill required that at least one portable turbidimeter/recorder for monthly filter profiling be provided. (1) (2) (3)