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HomeMy WebLinkAboutSDP202100084 Correspondence 2021-11-03 (4)E%J Project Name: Project Address: Date of Flow Test: Time of Flow Test: Data Reliable Until: Conducted By: City Forces Contacted: Raw Flow Test Data Static Pressure: 75.5 PSI Residual Pressure: 69.5 PSI Flowing GPM: 1,036 GPM @ 20 PSI: 3,444 Flow Test Summary EJE 21128 - VAC 12457 1636 Seminole Trail, Charlottesville, VA 22901 2021-04-05 12:10 PM 2022-04-05 Jill Zimmerman (Albemade County Service Authority) 434.531.7450 Albemarle County Service Authority (434.531.7450) & Albemarle County Fire Department (434.566.2576) Hydrant F7 Pitot Pressure (1 ): 55 PSI Coefficient of Discharge (1): Not Provided Hydrant Orifice Diameter (1): 2.5 inches Data with a 10 % Safety Factor Static Pressure: 68.0 PSI Residual Pressure: 62.0 PSI Flowing GPM: 1,036 GPM @ 20 PSI: 3,182 Note: Albemarle County Service Authority utilizes a specific method of calculating pitot flow with a red Pollard diffuser: see eq. 13, Walski and Lutes article 1990 Journal Management and Operations AWWA. Project Site Static -Residual (#10536) 161 Hydrant © - Flow Hydrant (#10674) Main Size . • FAID • j :� A 8 inches !� Distance Between FI and R • �+ 427 ft (measured linearly) Static -Residual Elevation 480 ft (above sea level) �'° Flow Hydrant (F7) Elevation • OQ 499 ft (above sea level) o r - Elevation & distance values are approximate EJ Flow Tests, LLC 21505 North 78th Ave. I Suite 130 1 Peoria, Arizona 85382 1 (602) 999-7637 1 www.ejengineering.com John L. Echeverri I NICET Level IV 78493 SME I C-16 FP Contractor ROC 271705 AZ I NFPA CFPS 1915 www.flowtestsummary.com Page 1 E%J I Flow Test Summary Static -Residual Hydrant Approximate Project Site Flow Hydrant (only hydrant FF11shown for clarity) 4514 643 Owensville 676 0 ,0,7 667 677 Commonwealth Rio ViI G' GA"1 631 601 Barracks 4Y^ Go gle 750 Water Supply Curve N1.85 Graph Prott t 74f 47l Eastham 610 612 1446 769 Map data ©2021 ii Raw Supply m w/ Safety Factor m Projected ro 75.5 PSI 69.5 PSI y o 9& a m 67.95 SI\ \ \ \ N \ \ \ \ \3;444(d 20 \ SI m a o N 3,1 B2@ 20PSI 0 1 036 GPM 0 0 0 0 0 0 0 0 0 N Flow (GPM) EJ Flow Tests, LLC 21505 North 78th Ave. I Suite 130 1 Peoria, Arizona 85382 1 (602) 999-7637 1 www.ejengineering.com John L. Echeverri I NICET Level IV 78493 SME I C-16 FP Contractor ROC 271705 AZ I NFPA UPS 1915 www.flowtestsummary.com Page 2