DDW-2024-011055

System Name: System Number:13019
1. Indoor Water Use
Number of residential connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1
Number of other connections - - - 11 ERCs of other connections 2.1
http://www.waterquality.utah.gov/Onsite/OnsiteP
Total Equivalent Residential Connections (ERCs)3.1
Per ERC Total Per ERC Total Per ERC Total
(gpd/ERC) (gpm) (gallons/ERC) (gallons) (ac-ft/yr) (ac-ft/yr)
800 1.7 400 1,240 0.45 1.40
2. Outdoor Water Use
Is the drinking water used for outdoor irrigation?
Residential ERCs using drinking water for irrigation - - - - - - - - - - - - > > >
Percentage of Residential ERCs using DW for irrigation - - - - - - - - - - - - > > >0%Map Zones
Average irrigated acreage per residential connection - - - - - - - - - - - - > > >1
Total irrigated acreage of other connections.- - - - - - - - - - - - > > >2
Irrigation zone 2 3
4
5
6
Per ERC Total Per ERC Total Per ERC Total
(gpd/ERC) (gpm) (gallons/ERC) (gallons) (ac-ft/yr) (ac-ft/yr)
0 0.0 0 0 0.00 0.00
3. Fire Flow Requirement
Does the water system provide fire protection?
Maximum fire suppression demand for water system or pressure zone (gpm)
Maximum fire suppression duration for water system or pressure zone (hours)
Required Fire Suppression Storage (gallons) - - - - - - - - - - - - - - - - - - - - > > >0
Total Water System Requirements (= indoor use + outdoor use + fire flow demand)
Per ERC Total Per ERC Total Per ERC Total
(gpd/ERC) (gpm) (gallons/ERC) (gallons) (ac-ft/yr) (ac-ft/yr)
800 1.7 400 1,240 0.45 1.40
Does this system have adequate source capacity per R309-510-7?
IPS points may be assessed for lacking required source capacity to meet peak day and/or average yearly flow requirements.
Existing Sources:2.0 gpm
Required Source Capacity:1.7 gpm
% of Req'd Capacity:116.1%
Difference:0 gpm
Division of Drinking Water Water System Capacity Calculation Sheet (revised February 21, 2012)
Enter the green cells only.
(Enter notes here. Check whether and
what % of outdoor irrigation is supplied
by drinking water.)
Source Storage Water Rights
Navajo Lake Lodge
Source Storage Water Rights
(Example: water use of 2
factory is equivalent to 75
homes.)
MINIMUM REQUIREMENTS FOR INDOOR WATER USE
Storage Water Rights
MINIMUM REQUIREMENTS FOR WATER SYSTEM
Source
(Enter notes here. Verify minimum fire flow and
duration with local fire authority.)
MINIMUM REQUIREMENTS FOR OUTDOOR WATER USE
Enter number of non-residential connections
(e.g., 2 factory connections).
Convert "Number of other connections" (Cell E9) to ERCs here. [ERCs of other connections = peak day demand of other connections / 800 gal per day]
Enter estimated irrigated acre
Enter total irrigated acres of other
connections here.
Enter fire flow in gpm.
Enter duration in hours.
Linked to Cell I99 below.
Select Irrigated Zone # from the list. See "Irrigation Demands & Map" tab on the bottom of the screen.
Negative number means (1) additional source capacity is
needed , and (2) IPS points should be assessed.
Linked to Cell C51 above.
Yes No
Yes No
13019 Navajo Lake Lodge, Cap. Calc. 2021.xls Page 1 of 4 8/3/2021
Does this system have adequate storage capacity per R309-510-8?
IPS points may be assessed for lacking required storage capacity.
Existing Storage:1,950 gal
Required Storage Capacity:1,240 gal
% of Req'd Capacity:157.3%
Difference:710 gal
Non-community Water Systems - Calculation of ERCs for Indoor Water Use (*See R309-510, Tables 510-1, 2, & 4 for other facility types.)
GPD/person*Calculated
GPD/site or pad GPD/person Gallon/site or pad
ERC/site or
pad
# of Sites or
pads ERCs
N/A 150 N/A 75 0.19 11 2.1
35 35 17.5 17.5 0.04 0.0
0 0 0 0 0.00 0.0
N/A 100 N/A 50 0.13 0.0
*Number of people per camp site 1
Source
(GPD/vehicle)
Storage
(Gal./vehicle)
ERC/1000
vehicles served
# of Vehicles
served ERCs
7 3.5 8.75 0 0.00
Navajo Lake Lodge
Calcuation of Projected ERCs Source (in gallons per minute)
Existing Residential Connections 0 WS001 Larson Lodge Spring 2
Number of Obligated Future ERCs 0
Total Source Capacity 2
Max. ERC allowed (for indoor use only)
Storage (in gallons)
ST001 Pump/Spring Tank 1,000
ST002 Upper Tank 950
Total Projected Number of ERCs 0
Total Storage Capacity 1,950
15 cabins, 17 RV pads, Restaurant - 20 seats @ 35 gpd/seat
Facility Type
Source
MINIMUM REQUIREMENTS FOR INDOOR USE
Cabins
Storage
Roadway Rest Stop w/ flushometer valves
Linked to Cell I118 below.
If applicable, enter number of people per camp site here.
Negative number means (1) additional storage volume is
needed, and (2) IPS points should be assessed.
If you need to calculate projected future demand & req'ts (including both existing & future residential connections), enter this number to Cell I8 as "Number of residential connection."
Diaphragm or air pressure tanks shall not be considered effective storage volume for community systems or NTNC with significant demand.
Linked to Cell E51 above.
13019 Navajo Lake Lodge, Cap. Calc. 2021.xls Page 2 of 4 8/3/2021