Emergency Plan - Grand Strand Water and Sewer Authority

ACTION FORMS 12 (AF-12)
WATER SYSTEM PRESSURE LOSS
4.12. Water System Pressure Loss
CALCULATING STORAGE RATE OF DECLINE
Maximum Storage Capacity = 9.8 Million Gallons (MG)
“Critical” Storage Level = 30% = 2.94 MG
DATE _________________
CURRENT % ___________
TIME ____________ am / pm
CURRENT GALLONS _____________________
PREVIOUS Storage Level:
CURRENT Storage Level:
Level: ________%. Time: _______ am / pm
Level: ________%. Time: _______ am / pm
DIFFERENCE: (subtract) ________%. _______ minutes
Convert “Difference” % to gallons:
9.8MG X “Difference” _______% = _________MG X 1,000,000 = _________________ gallons
Calculate Rate of Decline:
_________________ “Difference” gallons / ______ “Difference” minutes = ___________ GPM
Gallons Remaining Before Reaching “Critical” Level:
Current Storage _________________ gallons – 2,940,000 “critical” storage capacity
= _________________ gallons until “critical”
Time Remaining Before Reaching “Critical” Level:
_________________ gallons until “critical” / Rate of Decline _______________ GPM
= ___________ minutes until “critical” / 60 min/hour
= ___________ hours until reaching “critical” level at current pumping rates
Report By:
Grand Strand Water & Sewer Authority 158 CONFIDENTIAL MATERIALS
Emergency Management Plan
SECURITY SENSITIVE
June 7, 2013
NOT FOR PUBLIC
DISCLOSURE