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ADDENDUM NO.1 <br />ATTACHMENT 2 <br />CITY OF SANTA ANA <br />STORMWAI'ER LIFT STATIONS <br />SAMA ANA LIFT STATION: <br />The Santa Ana lift station has the following equipment; <br />1. One ontobcrverticaI turbine pump including 60 hp motor, oil Inbrieatcd vertical <br />shaft bearings and lubricated oil taut:. <br />2. Two numbers submersible 20 hp pump and motor, <br />3. One numberclectronic Icvcl sensor. <br />4. One numlicr ultrasound level sensor. <br />5_ One 60 hp Variable Frequency Drive. <br />i - Two 20 hp Variable Frequency Drive. <br />7. One 800 Amp. I ransfcr Switch. <br />S. One 300 Amp. Panel Board. <br />9_ One 2SKVA 490 to 240/120 Transformer_ <br />10.One C_'onlrol Panel including Modicon M340 CPU, Digital input module, <br />Digital output module, Analog input, Analog output, 11M1 and Power backup <br />package. <br />11. Hirce number, check valves and one number gate valve. <br />12. One half hp sump pump. <br />13. One exhaust fan conitrolled by the controler. <br />14_ SCADA system including dedicated computer and software. <br />For more detail please refer to attached drawings. <br />Operation: <br />flit pumps arc sct to be called as tot low; <br />1. 'I'hc two 20hp pinups arc working as lead and lag, the 60hp pump is the backup <br />puntP. <br />2_ Once the level gets to 45" the lead PUMP steal I be called at the hi speed and once <br />the level gets to 43" the pump shall run on the required speed for keeping the <br />level at 43", the minimum speed set Such aS the pu1111) shall pump at the <br />tninitnutn allowable flow and the pump Shall stop at 30" level. <br />3. The lag pump shall be called at the following conditions: <br />1. The lead pump called but not running. <br />2. The level gets to 50". <br />City Council 26 — 52 6/15/2021 <br />