Ralston Water Treatment Plant Location: Arvada, Colorado Plant Type: Municipal water treatment Product(s) Installed: MRI Inclined Plate Settlers; MRI Hoseless Cable-Vac TM Sludge Collector Year Installed: 1999 (plate settlers) 2004 (sludge collector) Design Flow Rate: 10 MGD/basin Basin Size: 56' x 25' x 17.5' Loading Rate: 0.272 GPM/ft 2 Residence Time: 26 minutes Effluent Turbidity: 0.4 NTU Raw Water Source: Reservoir Normal Turbidity: 4 NTU (raw water) / 0.4 NTU (effluent off plates) Highest Turbidity: 50 NTU (raw water) / 1 NTU (effluent off plates) Coagulant: Alum Effects of Spikes on Plate Settlers: Maintains < 1NTU Type of Sludge Removal: Hoseless Cable-Vac TM Sludge Collector Denver (303) 279-8373 | Fax: (303) 279-8429 sales@meurerresearch.com www.meurerresearch.co

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