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these PRVs is critical at first since the short-term water demands will not be large enough to <br />turnover the water tower adequately. Individual PRVs may be needed at local dwellings where the <br />water pressure is higher than 80 psi as shown in Figures A14 and A15. <br />Similar to the northeast area analysis, Table 3.13 summarizes the fire flow requirements projected for the <br />northwest study area based on the anticipated 2040 land uses. These requirements are only intended to <br />be used as a general planning guideline at this time. <br />Table 3.13 — Projected Fire Flow Requirements — 2040 Northwest Study Areas <br />Land Use Type Approximate Needed Fire <br />Protection (gpm) <br />Single Family Residential 500 — 1,500 <br />Mixed Residential 2,000 — 3,000 <br />Highway Business 1,500 — 2,500 <br />Public/Semi Public 500 — 1,000 <br />Open Space/Parks N/A <br />GF'M — Gallons per Minute <br />The available fire flows modeled for the northwest study areas vary from approximately 1,000 gpm to 4,000+ <br />gpm and are shown in Figure A16 in AppendixA. All of the single family residential and public/semi public <br />areas will have an available fire flow of equal or greater than 1,000 gpm, which will be adequate. The mixed <br />residential and highway business areas are projected to have an available fire flow equal or greater than <br />3,000 gpm, which should also be adequate. <br />Feasibility Report <br />Northeast & Northwest Urban Service Area Expansion Study <br />City of Elk River, MN <br />WSB Project No. 020010-000 <br />Page 14 <br />