DDW-2025-000763

Capacity calculation sheet.xlsx Page 1 of 1/15/2025
Division of Drinking Water Water System Capacity Calculation Sheet—
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(Last Update 3/30/2017)
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
3%
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
1,155.8
3,500.0
1,072,128
*Enter the green cells only*
Chevron Products Company 18175System Name System Number
per residential connection
other connections
flow
duration
1.1 Indoor Water Use
1.2 Outdoor Water Use
1.3 Fire Flow Water Use
2. Summary of Water System Capacity Requirements
Number of residential connections - - - - - - - - - - -- - - - - - - - - - - - - - - - - - -
Number of other connections - - - ERCs of other connections
Total Equivalent Residential Connections (ERCs)
Source Storage
Is the drinking water used for outdoor irrigation?
Residential ERCs using drinking water for irrigation
Percentage of Residential ERCs using DW for irrigation
Average irrigated acreage
Total irrigated acreage of (park, school, etc.)
Irrigation zone
Source Storage
Does the water system provide fire protection?
Maximum fire demand (in gpm) for or
Maximum fire suppression (in hours) for or
Required Fire Suppression Storage (in gallons)

- - - - - - - - 2,000
2 2.0
50
0.20
1.00
(Enter notes here regarding whether and what % of
irrigation water is supplied by PWS.)
4
Enter notes here, e.g.
fire official contact info or comments.)
(Example: water use of 2 factories
equals to water use of 55 homes.)
2,002.0
MIN. REQUIREMENTS FOR INDOOR WATER USE
MIN. REQUIREMENTS FOR IRRIGATION USE
240,000
MINIMUM REQUIREMENTS FOR WATER SYSTEM
Source Storage
None
302.8%
800 400
1,140 570
1,940 970
1,112.2 800,800
43.6 31,328
1,155.8 1,072,128
Map Zones
1
2
3
4
5
6
water system pressure zone
water system pressure zone
2,000
2
(*Verify req'd fire flow and duration with local fire code officials.*
(indoor + outdoor)(indoor + outdoor + fire)
2.1 Does this system have adequate source capacity (per R309-510-7)?
Required Source Capacity gpm
Existing Source Capacity gpm
Source Capacity Deficit gpm
Existing % of Total Req'd
2.2 Does this system have adequate storage capacity (per R309-510-8)?
Total Required Storage gal
This source capacity assessment is a general overall system calculation. It may not reflect the variations in individual areas or pressure zones.
This storage capacity assessment is a general overall system calculation. It may not reflect the variations in individual areas or pressure zones.
Capacity calculation sheet.xlsx Page 2 of 1/15/2025
Existing Storage Capacity gal
Storage Capacity Deficit gal
gal
Is storage deficiency solely due to
fire storage?
Existing % of Total Req'd
w/ flush toilets
w/o flush toilets
w/ flushometer valves
2,100,000
240,000
MINIMUM REQUIREMENTS FOR INDOOR USE
60 0 30 0
20 0 10 0
5 0 2.5 0
N/A 100 N/A 50
7 3.5 8.8
Total Existing Source Capacity (in gpm)
Total Projected ERCs
Total Existing Storage Cap. (in gallons)
None
Not
Applicable
195.9%
Modern Recreation Camp 0.00 0.0
Semi-Developed Camp 0.00 0.0
Semi-Developed Camp 0.00 0.0
RV Park 0.13 0.0
Roadway Rest Stop 0.0
3,500
2,000
2,100,000
Required Fire Storage
(See R309-510, Tables 510-1, 2, & 4 for other facility types.)
Number of people per camp site
3. Transient PWS Indoor Water Use ERC Calcuation
4. Data Input for Calculating ERCs, Source and Storage
—
Source Storage
Facility Type
Source Storage
GPD/person*GPD/site or pad Gallons/person Gallon/siteor pad ERC/site or pad
(GPD/vehicle)(Gal./vehicle)
ERC/1000
vehicles served
Vehicles
served/day
Residential Connections
Obligated ERCs
Total # of sites/pads ERCs
ERCs
Existing
Future
0
0
0
0
0
0
WS001 Salt Lake City 500
WS002 Weber Basin South 3000
2000
0
ST002 WeberBasinSouth 2,000,000
ST001 Salt Lake City 100,000
They also have Fire Protection with Canals and wet stand pipes in warm
weater
4.2 Summary - Existing Sources
4.1 Projected ERCs Calculation (optional)
4.3 Summary - Existing Storage Tanks
(enter in green cells below)
(enter below)
(enter below)
Chevron Products Company
Maximum ERCs (assuming indoor use only)6300
Capacity calculation sheet.xlsx Page 3 of 1/15/2025
Additional Notes
System Name: System Number:Chevron Products Company 18175
Chevron uses around 1800 Acre feet of water annually, So I converted that to around 1100 GPM that is why I used 2000
ERC
Capacity calculation sheet.xlsx Page 4 of 1/15/2025
Capacity calculation sheet.xlsx Page 5 of 1/15/2025
Irrigation Demands & ERCs
(This reference table is used to automate the calculations in the PWS Capacity Calculation sheet. Do not alter.)
System Name: System Number:Chevron Products Company 18175
Zone Peak Day Avg Year Storage
Demand Demand Reqmt (to be added to indoor and fire flow demands)
3.96 1.87 2,848 Avg. Yr.Storage Peak
Peak Day (ac-ft/yr Requirement Instantaneous
zone (gpm/irr. ac)per irr. ac.)(gal/irr. ac)(gpm/irr. ac)
1 2.26 1.17 1,782 4.52
2 2.80 1.23 1,873 5.60
3 3.39 1.66 2,528 6.78
4 3.96 1.87 2,848 7.92
5 4.52 2.68 4,081 9.04
6 4.90 3.26 4,964 9.80
IRRIGATION DEMANDS
4
Capacity calculation sheet.xlsx Page 6 of 1/15/2025