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<br />22 | Final Report Bay Area Clean Water Agencies | City of San Leandro <br />6.4 Project Costs for Levels 2 and 3 Upgrades <br />The estimated capital and O&M costs for the upgrades to meet the Level 2 and Level 3 effluent limits <br />are summarized in Table 6-2. Operating costs represent the average cost for the 30-year period. <br />Table 6-2. Estimated Capital and O&M Costs for Nitrogen and Phosphorus Plant Upgrades <br />Parameter Unit Level 2 <br />Dry Season1 <br />Level 2 <br />Year Round1 <br />Level 3 <br />Dry Season1 <br />Level 3 <br />Year Round1 <br />Design Flow mgd 7.6 8.1 7.6 8.1 <br />Cost for Ammonia, TN, and TP Removal <br />Capital2 $ Mil 63 64 87 91 <br />Annual O&M $Mil/yr 1.4 1.6 1.7 2.0 <br />O&M PV3 $ Mil 31 35 39 44 <br />Total PV3 $ Mil 94 99 126 135 <br />Unit Capital Cost $/gpd 8.3 7.9 11.4 11.2 <br />Unit Total PV $/gpd 12.4 12.2 16.5 16.6 <br />TN Removal <br />Capital2,4 $ Mil 62 63 86 90 <br />Annual O&M4 $ Mil/yr 1.3 1.5 1.6 1.9 <br />O&M PV3,4 $ Mil 30 34 37 42 <br />Total PV3,4 $ Mil 92 97 123 131 <br />TN Removed (Ave.)6 lb N/d 910 950 1,080 1,270 <br />Annual TN Removed (Ave.)7 lb N/yr 331,000 347,000 395,000 465,000 <br />TN Cost4,8 $/lb N 9.2 9.3 10.4 9.4 <br />TP Removal <br />Capital2,5 $ Mil 43 43 65 69 <br />Annual O&M5 $ Mil/yr 1.3 1.4 1.4 1.5 <br />O&M PV3,5 $ Mil 29 31 32 34 <br />Total PV3,5 $ Mil 71 74 98 103 <br />TP Removed (Ave.)6 lb P/d 88 92 107 130 <br />Annual TP Removed (Ave.)7 lb P/yr 32,000 33,000 39,000 47,000 <br />TP Cost5,8 $/lb P 74 73 83 73 <br />1. Dry Season = facilities sized for May 1 through September 30 loads but operate year round; year round = facilities sized for year round loads <br />and operated year round. <br />2. Costs are referenced to the ENR SF CCI for November 2017 at 12,015. Costs do not include changes in solids handling or changes in energy <br />requirements in other unit processes. Level 3 costs are inclusive of facilities needed to meet Level 2. <br />3. PV is calculated based on a 2 percent discount rate for 30 years. <br />4. Based on cost for ammonia/nitrogen removal only <br />5. Based on cost for phosphorus removal only <br />6. The average daily nutrient load reduction over the 30-year project duration. <br />7. The average annual load reduction over the 30-year project duration. The calculation considers days with no discharge. <br />8. The unit load reduction cost ($/lb) was calculated by dividing the total present value for the nutrient of interest by the nutrient load reduction <br />over the 30-year projection duration (e.g., Total PV for TN Removal divided by (Annual TN Removed times 30-years)).