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TRIANGLE AREA WATER SUPPLY MONITORING PROJECT <br /> INTERLOCAL AGREEMENT <br /> ATTACHMENT B <br /> TAWSMP ANNUAL COST SHARES FOR PHASE VIII: <br /> FY 2018—FY 2022 <br /> The annual cost for Phase VIII of the Triangle Area Water Supply Monitoring Project is <br /> $615,000. The US Geological Survey will provide a forty-five percent cost share match of <br /> $249,000. The Monitoring Project Partners' total annual cost for Phase VIII is the remaining <br /> $366,000, plus $20,000 for TJCOG services and support. The Monitoring Project Partners' <br /> individual annual cost shares are the sum of a base rate and a variable rate. The base rate is thirty <br /> percent of the total annual Monitoring Project Partners' cost, which is thirty percent of$386,000, <br /> divided equally among the Monitoring Project Partners. The variable rate is seventy percent of <br /> the total annual Monitoring Project Partners' cost, which is seventy percent of $386,000, <br /> multiplied by each Monitoring Project Partners' percentage of the total average annual water use <br /> during Fiscal Year 2015 for all Monitoring Project Partners. <br /> Average Share of Base Rate Variable Phase Vlll <br /> Annual Daily Total Water Cost Rate Cost Total Annual <br /> Water Use Use Share Share Cost <br /> Project Partners m d <br /> Apex 3.970 7.1% $14,475 $19,274 $33,749' <br /> Ca includes Morrisville 17.200 30.9% $28,950 $83,505 $112,455` <br /> .... . ::... ... .......... ... <br /> Chatham County 1.661 3.0% $14,475 $8,064 $22,539 <br /> Durham 24.580 44.2% $14,475 $119,336 $133,811 <br /> Hillsborou 'h 1.315 2.4% $14,475 $6,384 $20,859 : <br /> Orange County 2 0.183 0.3% $14,475 $890 $15,365 <br /> Orange Water and Sewer <br /> Authority 6.745 12.1% $14,475 $32,747 $47,222 <br /> Total 55.65 100% $115,800 $270,200 $3861000 <br /> Notes: <br /> 1. Based on raw water withdrawals during CY 2015 as reported by the Partners in their Local Water Supply Plans. <br /> 2.Orange County's Average Annual Daily Water Use is based on the percentage of the Orange-Alamance Water System service <br /> area located within Orange County,as indicated in its 2015 Local Water Supply Plan. <br /> Orange-Alamance Water System service area in Orange County=30% <br /> TJCOG Fee Cost <br /> Shares <br /> Local Annual Cost' $20;000 $366,000 <br /> 'Costs include ongoing water-quality monitoring, 10 stream gauges,and management fee. <br />