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CMP Part 4C. Water Supply
<br /> rtcti. V
<br /> Population 2'200 2,400 2,600 2,800 3,000
<br /> (Existing)
<br /> Fire Demand(gpm)' 2,000 2,000 2,000 2,000 2,000
<br /> Max.Day Demand(gpm) 421 459 498 536 574
<br /> Peak Usage(gpm) 2,421 2,459 2,498 2,536 2,574
<br /> Firm Pumping Supply(gpm)2 500 500 500 500 500
<br /> Withdrawal from Storage(gpm) 1,921 1,959 1,998 2,036 2,074
<br /> Fire Flow Duration(hrs) 3 3 3 3 3
<br /> Fire Demand Storage(gallons) 345,780 352,620 359,640 366,480 373,320
<br /> Emergency Storage(gallons)3 121,248 132,192 143,424 154,368 165,312
<br /> Total Storage Needed(gallons) 467,028 484,812 503,064 520,848 538,632
<br /> Current Available Storage(gallons) 200,000 200,000 200,000 200,000 200,000
<br /> Net Storage Surplus/Deficit(gallons) -267,028 -284,812 -303,064 -320,848 -338,632
<br /> (1)Fire flow requirements vary within the City depending on type and construction of facilities. Fire flow
<br /> requirements for normal residential development vary between 1,000 to 1,500 gpm. For multi-family and
<br /> commercial areas such as the downtown business district,residential apartment areas,school and industrial
<br /> areas;flows of 3,500 gpm for 3 hours are generally considered acceptable.
<br /> (2)Based on firm capacity listed in Table 4C-754.
<br /> (3)Emergency storage equals 20%of maximum day demand.
<br /> City of Orono Community Management Plan 2020-2040 Part 4C, Page 13
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