10-A Paris Water Conservation P - Laserfiche WebLink

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Conserv tion Measure Reducing naccounted - for uses Calculation Procedure (Dry-year demand) X (Unacc.-for percentage if over 150/0, minus 15% 20.5 gpcd (Most likely) to 21.7 gpcd (Advanced) as determined b the TCE Seasonal use (Avg. use X 20% X 70/0 and 20% Average use X 2% and 5% Results 0 to 1.87 gpcd 20.5 to 21.7 gpcd 2.64 to 7.55 gpcd 3.77 to 9.44 gpcd Dry-year irrigation use (Dry-year demand - A vg. use) X 10.5% and 20% 2.04 to 3.88 gpcd Total Technical Savings Potential 28.95 to 44.44 gpcd To de ermine the long-term planning goal, these totals are subtracted from the Qœ ear water demand (208.1 gpcd for Paris in 2000. Year of initial adoption of Water Conservati n Plan). Long-term planning goal = (Dry-year demand) minus (Total Technical Potential) = 208. gpcd - 28.95 gpcd = 179.15 gpcd ("Most Likely" conservation scenario) = 208. gpcd - 44.44 gpcd = 163.66 gpcd ("Advanced" conservation scenario) oal for munici al water use = 179.15 to 163.66 cd Thes goals are based on a potential reduction in total municipal gallons per capita per day de and by the year 2050. Some of these conservation measures, such as retrofittin of water-conserving plumbing fixtures, will not be realized in the early years of the goa but will result in increasing benefit as we approach the year 2050 when more older hom s are re-plumbed and future new homes constructed. A tentative schedule to achieve 1 0% of the goal by the year 2050 would be: 100/0 by 2010, 17.50/0 by 2015, 25% by 2 20, 37.5% by 2025, 500/0 by 2030, 62.50/0 by 2035, 750/0 by 2040, 87.50/0 by 2045 and 000/0 by 2050. I Prepared by: City of Paris Environmental Services Division, April, 2005 I i 9