HomeMy WebLinkAbout028 Water and Sewer Water and Sewer
There is an existing sewer 18" asbestos concrete sewer main running through the north side of
the site and an existing 24" asbestos concrete sewer main running along the eastern edge of the
site. There is currently no water running to the proposed northern lots. There is an existing 8"
ductile iron watermain that extends north from Durston and ends in the Gallatin County Rest
Home parking lot. No construction will take place during the creation of the 4-lot minor
subdivision due to a non-financial guarantee. Sewer and water are proposed with the subsequent
site plan and infrastructure applications.
The planned future development of the northern lots will see the water main extended from the
Gallatin County Rest Home parking lot north and connected to the existing watermain at the
intersection of Juniper St. and Oak Park Dr. Please see the preliminary future concept plan
included in this submittal for the location of the proposed water and sewer utilities through the
site in the planned development. Easements for the utilities are provided on the preliminary plat.
Water and wastewater demand calculations for the subdivision are included in this document.
The City of Bozeman Design and Construction Standards (October 2024)were used for these
calculations to provide more conservative estimates.
Please see the responses below to the items in Section 38.220.060—Additional Subdivision
Preliminary Plat Supplements in the Bozeman Municipal Code.
a. Water rights. Describe how the proposed subdivision intends to satisfy section
38.410.130. Provide all documentation of water rights appurtenant to the proposed
subdivision; e.g. previous estimates or actual payment-in-lieu of water rights, certified well
logs, decrees or adjunctions, etc.
From the information gathered in our correspondence with Jim Sullivan from Tasman
Geosciences and comments received from the Pre-Application, irrigation wells are not allowed
on this site. To the best of our knowledge,the owners do not own any water rights for this
subdivision.
b. The information needed to demonstrate proposed compliance with division 38.270.
Special care is needed when concurrent construction is proposed.
Water and wastewater demand estimates for the subdivision are included in this section. For
proposed future development, cash-in-lieu of water rights will be calculated and paid prior to
development of the northern property. The current estimate for the cash-in-lieu amount with the
future development is $135,408. This estimate was provided by the City of Bozeman before this
application was revised to a 4-lot minor subdivision and is subject to change. The City of
Bozeman Water Department will need to verify that this estimate is still valid prior to final plat
and site plan approval.
Hidden Creek Subdivision
Preliminary Plat
Application
Perryn Raymond
From: Erik Ringsak
Sent: Tuesday, September 24, 2024 4:40 PM
To: Perryn Raymond
Subject: FW: [EXTERNAL]Hidden Creek Pre-Application Comment
Can you verify the information below? CILWR for Hidden Creek?
NOW A PART OF
M.ADISON ^^
ENGINEERING WWC,
�— LNGINEERING
ERIK RINGSAK, P.E. I Civil Department Manager
895 Technology Blvd,Ste 203 1 Bozeman,MT 59718
0:406.586.0262 1 D:406.898.3446 1 C:701.471.1099
www.wwcengineering.com
From: Kalina Vander Poel <Kalina@uhousingpartners.com>
Sent:Tuesday, September 24, 2024 12:18 PM
To: Erik Ringsak<eringsak@wwcengineering.com>
Cc: Seth O'Connell <seth@uhousingpartners.com>
Subject: Fw: [EXTERNAL]Hidden Creek Pre-Application Comment
WARNING: This email originated from an external sender. Please use caution when clicking links or opening
attachments.
Hey Erik,
Can you help us out here and provide an estimated total site costs for this? It's not urgent, but we want to
keep track of any anticipated fees for this project.
Thanks,
k
Kalina Vander Poel
/kaylee•na/
Director of Design,AIA, NCARB
UHP DESIGN LLC
406-224-8220
_IjAl Missoula,MT
uhousingpartners.com
From: Erik Ringsak<eringsak@wwcengineering.com>
Sent:Tuesday, September 17, 2024 4:11 PM
To: Griffin Nielsen <GNielsen@BOZEMAN.NET>
i
Cc: Kalina Vander Poel <Kalina@uhousingpartners.com>
Subject: RE: [EXTERNAL]Hidden Creek Pre-Application Comment
Griffin,
I appreciate the information and will pass along.
Thanks,
NOW A PART OF
M.ADISON ^
ENGINEERING �� WWC
ENGrrvFERING
ERIK RINGSAK, P.E. I Civil Department Manager
895 Technology Blvd,Ste 203 1 Bozeman,MT 59718
0:406.586.0262 1 D:406.898.3446 1 C:701.471.1099
www.wwcengineeri ng.com
From: Griffin Nielsen<GNielsen@BOZEMAN.NET>
Sent:Tuesday, September 17, 2024 3:58 PM
To: Erik Ringsak<eringsak@wwcengineering.com>
Cc: Kalina Vander Poel <Kalina@uhousingpartners.com>
Subject: RE: [EXTERNAL]Hidden Creek Pre-Application Comment
WARNING: This email originated from an external sender. Please use caution when clicking links or opening
attachments.
Hi Erik,
The CILWR fee rate of$6,000/acre-foot in Suzie's comment is still correct and the current multi-family unit demand rate
is 0.124 AF.
Also, I know it's on your radar, but just a friendly reminder to keep our High-Efficency Rebate Agreement in mind. We
can rebate back approximately 20%of the CILWR fee for residential units at occupancy if high-efficiency fixtures (toilets,
washers, and shower heads) meeting the City's Water Conservation Division's Specs are installed. Attached is the rebate
agreement template outlining the terms and specs for the fixtures. If HRCD/GC are interested please update the
agreement using track changes with the owner's information and send it back to me.The agreement should be finalized
prior to final plan approval. Let me know if you have any questions.
Thanks,
City of Bozeman MT
Griffin Nielsen, PEA Engineering/Utilities Department
D:406.582.2279
C:406.595.1598
gnielsen(a)-bozeman.net
From: Erik Ringsak<eringsak@wwcengineering.com>
Sent:Wednesday, September 11, 2024 7:33 PM
To: Griffin Nielsen <GNielsen@BOZEMAN.NET>
2
Cc: Kalina Vander Poel <Kalina@uhousingpartners.com>
Subject: [EXTERNAL]Hidden Creek Pre-Application Comment
CAUTION:This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and know the content is safe.
Griffin,
Hope you have been doing well. We received the comment below for CILWR for 24332 Hidden Creek. We plan
to submit a site plan application in the near future that includes multi-level affordable housing buildings and
future building pads for the HRDC and the Gallatin County.
Can you confirm the amount stated below?
Plan Review Review Comments Report
Project Name: 24332 Hidden Creek PA
Workflow Started: 7/2/2024 5:21:10 PM
Report Generated: 09/06/2024 05:54 PM
Provide contact information for Farmer's Canal representative.
10 1 Engineering Library Comment
Suzanne Ryan BMC 38.410.130.Water Adequacy:The development will need to satisfy the
8/13/24 10:58 AM water adequacy code requirement prior to future subdivision approval.
Compliance for multi-family,commercial,and industrial lots will be deferred
until future site development and require a note to this effect listed on the
plat.For all other lots or improvements(parklands,common open space,
street medians,arterial and collector boulevards)which require irrigation the
applicant must identify how the irrigation will be supplied.If supplied
irrigation will be supplied from the Ci s domestic system compliance with
the code will be required at final plat.If sufficient water rights cant be
provided to offsets the development's annual demand then a cash-in-lieu of
water rights(CILWR)payment will be required.The!C&assesses the CILWR
fee at a rate of$6,000 per acre-foot.Please contact Griffin Nielsen with the
Engineering/Utilities Department directly at gnielsen@bozeman.net or(406)
582-2279 which any questions regarding the water adequacy code.
I appreciate your time. We will address the CILWR payment with the future site plan submittal but are just
trying to get an estimate on what that will be. Happy to provide a preliminary concept layout if needed.
Thank you.
_M S OW A PAt,
M.ADISON ^
ENGINEERING I ��WWC;
1,N6[NFERING
ERIK RINGSAK, P.E. I Civil Department Manager
895 Technology Blvd,Ste 203 1 Bozeman,MT 59718
0:406.586.0262 1 D:406.898.3446 1 C:701.471.1099
www.wwcengineering.com
3
EASEMENT EXHIBIT A
WATER AND SEWER EASEMENT
LOCATED IN TRACT B, CERTIFICATE OF SURVEY NO. 2439 IN THE SW1/4 OF SECA, T.02S., R.5E., P.M.M.,
JUNIPER STREET GALLATIN COUNTY, MONTANA
(VARIABLE WIDTH) (M)S88°57'20"E,330.08' °
(R2)S87°42'32"E,330.03
297.08' ❑
0
00
O LU
M
S85°48'47"E,54.54' o
z
—S86°14'41"E�,22442.98'
S86°13'50"E,241.03' �-L/J�[1
Iq
0
LOT 1 30' ZO Line Table
5.167 ACRES
ZONED R-4 o M Line No. Length Bearing
in
104.00' o L1 10.00 S89044'13"E
0
N89'44'29"W C)
Q � �❑ LOT 3 ��
w o .184 ACRES
N o ZONED R-4 m
co M w
o ❑ CL N
a Z
g S89°44'29"E 93.00' M CD
z
104.00' O N89°44'26"W ❑
33'
r`
w
o LOT 4 0 50' 100,
N 0.427 ACRE
ZONED R-4 SCALE: 1"= 100'
N
O N
O N O
C,i O
TOTAL EASEMENT AREA °' Lu
57553 SQ. FEET OR 1.321 ACRE
.o 7T
10 rn
S89°44'26"E rz
93.00' V o
L1 1 g
CERTIFICATE OF SURVEYOR BASIS OF BEARING
I HEREBY CERTIFY THAT THIS SURVEY CORRECTLY Rocky Mountain Coordinate Reference System "BOBCAT" LDP
REPRESENTS WORK PERFORMED BY ME OR UNDER MY Lambert Conformal Conic Projection (Single Parallel)
DIRECT SUPERVISION AND IS TRUE AND CORRECT TO THE Project Origin Location:
BEST OF MY KNOWLEDGE AND BELIEF. Latitude= N46°15'00.00000"
Longitude=W111°15'00.00000"
All distances shown hereon are ground distances in units of
international feet.
a :••JAKE Scale Factor= 1.0001850000
p Z I _ LEGEND:
� 18 L O FOUND REBAR WITH NO CAP
FOUND 2.25"BRASS CAP(SWART 125 1997)
OD CALCULATED POSITION,NOTHING FOUND OR SET
••••••••••NQ ���� ❑❑ SET 2.5"ALUMINUM CAP(ZISKA 18636LS)ON
5/8"X24"REBAR
DATE: ------- NEW EASEMENT LINE
NEW EASEMENT AREA
DATE OF FIELD SURVEY:5/16/2024 BOUNDARY THIS SURVEY
NOTE:
1)THIS SURVEY DOES NOT CREATE AN EASEMENT. ADJACENT BOUNDARY
THIS SURVEY IS TO BE REFERENCED FOR (M) MEASURED DISTANCE
POSITIONAL AND GRAPHICAL PURPOSE ONLY. R2 RECORD DISTANCE(C.O.S. NO.2439)
PREPARED FOR
DESIGNED BY: JT
TRACT B, CERTIFICATE OF SURVEY NO. 2439 UNITED HOUSING 545 BLAINE ST. DPAWN
HECKE v: rT
CHECKE
PARTNERS, LLC. MISSOULA,MT 59801 CD BY:DATE: 5/2/2525
WATER & SEWER EASEMENT PREPARED BY SHEET
1275 MAPLE STREET,SUITE F
7� 7�VVT HELENA,MT 59601
VV
GALLATIN COUNTY, MT CENGINEERING (406)443-3962 1 OF 2
www.wwcengineering.com
EASEMENT EXHIBIT A
WATER AND SEWER EASEMENT
LOCATED IN TRACT B, CERTIFICATE OF SURVEY NO. 2439 IN THE SW1/4 OF SECA, T.02S., R.5E., P.M.M.,
GALLATIN COUNTY, MONTANA
JC:)
.
10 rn
rZ I/ o
�I N
L1 g
(M)S89°54'12"E,329.33'
O O
w
N �
O �
. O
O o I
M
O
O
Z
I
L2
M
J
1-
4-LOT 2 43'
N 4.042 ACRES
00
cli
ZONED R-4
N V
M �
Line Table �0
p M I
O O O
Z Line No. Length Bearing N
W g
L1 10.00 S89°44'13"E cu
v
L2 5.29 S88°58'46"E T- lr
of
0
L3 20.00 N1°01'34"E Z
L4 5.54 N88°58'35"W
0 50' 100,
TOTAL EASEMENT AREA
57553 SQ. FEET OR 1.321 ACRE SCALE: 1"= 100'
I
(M)45.32 I (M)44.72' —
0 285.38'
0
CERTIFICATE OF SURVEYOR BASIS OF BEARING
I HEREBY CERTIFY THAT THIS SURVEY CORRECTLY Rocky Mountain Coordinate Reference System "BOBCAT" LDP
REPRESENTS WORK PERFORMED BY ME OR UNDER MY Lambert Conformal Conic Projection (Single Parallel)
DIRECT SUPERVISION AND IS TRUE AND CORRECT TO THE Project Origin Location:
BEST OF MY KNOWLEDGE AND BELIEF. Latitude= N46°15'00.00000"
Longitude=W111°15'00.00000"
All distances shown hereon are ground distances in units of
international feet.
-0/ AKE 0y Scale Factor= 1.0001850000
p Z I _ LEGEND:
-71 ' 0. 18 L O FOUND REBAR WITH NO CAP
FOUND 2.25"BRASS CAP(SWART 125 1997)
CALCULATED POSITION,NOTHING FOUND OR SET
••••••••••NQ ���� ❑❑ SET 2.5"ALUMINUM CAP(ZISKA 186361-S)ON
5/8"X24"REBAR
DATE: ------- NEW EASEMENT LINE
NEW EASEMENT AREA
DATE OF FIELD SURVEY:5/16/2024 BOUNDARY THIS SURVEY
NOTE:
1)THIS SURVEY DOES NOT CREATE AN EASEMENT. ADJACENT BOUNDARY
THIS SURVEY IS TO BE REFERENCED FOR (M) MEASURED DISTANCE
POSITIONAL AND GRAPHICAL PURPOSE ONLY. R2 RECORD DISTANCE(C.O.S. NO.2439)
PREPARED FOR
DESIGNED BY: JT
TRACT B, CERTIFICATE OF SURVEY NO. 2439 UNITED HOUSING 545 BLAINE ST. DPAWN
HECKE v: rT
CHECKE
PARTNERS, LLC. MISSOULA,MT 59801 CD BY:DATE: 5/2/2525
WATER & SEWER EASEMENT PREPARED BY SHEET
1275 MAPLE STREET,SUITE F
7� 7�VVT HELENA,MT 59601
VV
GALLATIN COUNTY, MT CENGINEERING (406)443-3962 2 OF 2
www.wwcengineering.com
WATER USAGE DEMAND
CALCULATIONS
FOR:
Hidden Creek Minor Sub
Bozeman, MT
Prepared By:
r' NOW A PART OF
MADISON �
ENGINEERING ^NVWC
----� ENGINEERING
WWC Engineering/Madison
895 Technology Drive, Suite 203
Bozeman, MT 59718
(406) 586-0262
March 2025
Hidden Creek 4 Water Demand Calculations
Lot 1(Hidden Creek Planned Residential Development):
Zoning R-4
Lot Area 5.167 Acres
Residential Dwelling Units x 182
Residents/Unit x 2.17 (COB DSSP 4.2.4.B.)
Gallons/Capita/Day 135 (COB DSSP 4.2.4.B.)
Average Daily Demand 53,317 gpd
Peaking Factor= 3.0 COB DSSP Table 4.2.3
Average Day Demand 53,317 Gal/Day
Average Day Demand 37.03 gpm
Maximum Day Demand 122,629 Gal/Day
Maximum Day Demand 85.16 gpm
Peak Hour Demand 159,951 Gal/Day
Peak Hour Demand 111 gpm
Fire Flow Demand
Fire flow demand shall be in accordance with the latest version of the International Fire
Code (IFC)adopted by COB and as approved by the COB Fire Chief. For facility planning
purposes, COB uses the fire flow guidelines based on land use in Table 4.2.4.
Table 4.2.4—Fire Flow General Guidelines By Land Use
Land Use Description Fire Flow'
(gpm)
Manufacturing and Industrial S,000
Light Manufacturing and Central Business 4,000
Community and Neighborhood Business; Public Lands; 3,000
Medium and High Density Residential
Single Family Low and Medium Density 1,500
'The fire flow values in this table are guidelines only and may not be indicative of
the requirements for specific developments or buildings. Fire demand for specific
developments shall be in accordance with International Fire Code(IFC)and as
approved by the COB Fire Chief.
Max demand= Peak Hour Demand+Fire Flow
Lot 1 Max Demand 3,111 gpm
Lot 2(Gallatin County Rest Home):
Maximum Occupancy 112 Provided by Gallatin County Rest Home
x (Includes Housing and Employees)
Average Daily Use 135 Gal/Capita/Day (Section4.2.4)
Average Day Demand 15,120 Gal/Day
Table 4.2.3—Water Demand Peaking Factors
Item Peaking Factor'
Maximum Day Demand(MDD) 2.3
Peak Hour Demand(PHD) 3.0
'MDD and PHD shall be calculated by multiplying ADD by the appropriate peaking
factor.
Average Day Demand 15,120 Gal/Day
Average Day Demand 10.50 gpm
Maximum Day Demand 34,776 Gal/Day
Maximum Day Demand 24.15 gpm
Peak Hour Demand 45,360 Gal/Day
Peak Hour Demand 32 gpm
Fire Flow Demand
Fire flow demand shall be in accordance with the latest version of the International Fire
Code(IFC)adopted by COB and as approved by the COB Fire Chief. For facility planning
purposes,COB uses the fire flow guidelines based on land use in Table 4.2.4.
Table 4.2.4—Fire Flow General Guidelines By Land Use
Land Use Description Fire Flow'
(gpm)
Manufacturing and Industrial 5,000
Light Manufacturing and Central Business 4,000
Community and Neighborhood Business; Public Lands; 3,000
Medium and High Density Residential
Single Family Low and Medium Density 1,500
'The fire flow values in this table are guidelines only and may not be indicative of
the requirements for specific developments or buildings.Fire demand for specific
developments shall be in accordance with International Fire Code(IFC)and as
approved by the COB Fire Chief.
Max demand= Peak Hour Demand+Fire Flow
Lot 2 Max Demand 3,032 gpm
Lot 3:
Zoning R-4
Lot Area 0.184 Acres
Average Demand R-4 Zoning x 3,181 Gal/Acre/Day
Average Day Demand 585 Gal/Day
Table 4.2.2—Water Duty Factors By Zoning Designation'
Zoning Average Day
Designation Zoning Description Demand
(gpad)
R-S Residential Suburban District 107
R-1 Residential Single-Household Low Density S33
District
R Z Residential Two-Household Medium Density 700
District
R-3 Residential Medium Density District 2.379
R-4 Residential High Density District 3,181
Table 4.2.3—Water Demand Peaking Factors
Item Peaking Factor'
Maximum Day Demand(MDD) 2.3
Peak Hour Demand(PHD) 3.0
'MDD and PHD shall be calculated by multiplying ADD by the appropriate peaking
factor.
Average Day Demand 585 Gal/Day
Average Day Demand 0.41 gpm
Maximum Day Demand 1,346 Gal/Day
Maximum Day Demand 0.93 gpm
Peak Hour Demand 1,756 Gal/Day
Peak Hour Demand 1 gpm
Fire Flow Demand
Fire flow demand shall be in accordance with the latest version of the International Fire
Code(IFC)adopted by COB and as approved by the COB Fire Chief.For facility planning
purposes,COB uses the fire flow guidelines based on land use in Table 4.2.4.
Table 4.2.4—Fire Flow General Guidelines By Land Use
Land Use Description Fire Flow'
(gpm)
Manufacturing and Industrial 5,000
Light Manufacturing and Central Business 4,000
Community and Neighborhood Business;Public Lands; 3,000
Medium and High Density Residential
Single Family Low and Medium Density 1,500
'The fire flow values in this table are guidelines only and may not be indicative of
the requirements for specific developments or buildings.Fire demand for specific
developments shall be in accordance with International Fire Code(IFC)and as
approved by the COB Fire Chief.
Max demand= Peak Hour Demand+Fire Flow
Lot 3 Max Demand 3,001 gpm
Lot 4:
Zoning R-4
Lot Area 0.427 Acres
x
Average Demand R-4 Zoning 3,181 Gal/Acre/Day
Average Day Demand 1,358 Gal/Day
Table 4.2.2—Water Duty Factors By Zoning Designation'
Zoning Average Day
Designation
Zoning Description Demand
(gpad)
R-S Residential Suburban District 107
R-1 Residential Single-Household Low Density 533
District
R 2 Residential Two-Household Medium Density 700
District
R-3 Residential Medium Density District 2,379
R-4 Residential High Density District 3,181
Table 4.2.3—Water Demand Peaking Factors
Item Peaking Factor'
Maximum Day Demand(MDD) 2.3
Peak Hour Demand(PHD) 3.0
'MOD and PHD shall be calculated by multiplying ADD by the appropriate peaking
factor.
Average Day Demand 1,358 Gal/Day
Average Day Demand 0.94 gpm
Maximum Day Demand 3,124 Gal/Day
Maximum Day Demand 2.17 gpm
Peak Hour Demand 4,075 Gal/Day
Peak Hour Demand 3 gpm
Fire Flow Demand
Fire flow demand shall be in accordance with the latest version of the International Fire
Code(IFC)adopted by COB and as approved by the COB Fire Chief.For facility planning
purposes,COB uses the fire flow guidelines based on land use in Table 4.2.4.
Table 4.2.4—Fire Flow General Guidelines By Land Use
Land Use Description Fire Flow'
(gpm)
Manufacturing and Industrial 5,000
Light Manufacturing and Central Business 4,000
Community and Neighborhood Business;Public Lands; 3,000
Medium and High Density Residential
Single Family Low and Medium Density 1,500
'The fire flow values in this table are guidelines only and may not be indicative of
the requirements for specific developments or buildings.Fire demand for specific
developments shall be in accordance with International Fire Code(IFC)and as
approved by the COB Fire Chief.
Max demand= Peak Hour Demand+Fire Flow
Lot 4 Max Demand 3,003 gpm
Total Combined Demand:
Total Max Demand 3,147 gpm
(Includes fire flow once for the
subdivision, not for each lot individually)
SEWER USAGE DEMAND
CALCULATIONS
FOR:
Hidden Creek Minor Sub
Bozeman, MT
Prepared By:
NOW A PART OF
MADISON ^^
ENGINEERING �'�1�►�WC
--� ENGINEERING
WWC Engineering/Madison
895 Technology Drive, Suite 203
Bozeman, MT 59718
(406) 586-0262
March 2025
Hidden Creek 4 Wastewater Demand Calculations
Lot I(Hidden Creek Planned Residential Development):
Lot Area X 5.167 Acres
Infiltration Rate 150 Gal/Acre/Day
Lot 1 Infiltration Rate 775.05 Gal/Day
Lot 1 Infiltration Rate 0.54 gpm
Residential Dwelling Units X 182
Residents/Unit 2.17 (COB DSSP 5.2.4.B.)
Gallons/Capita/Day x 64.40 (COB DSSP 5.2.4.B.)
Average Domestic Flow 25434.14 Gal/Day
Average Domestic Flow 17.66 gpm
Lot 1 Average Day Demand 26209.19 Gal/Day (Domesic Flow+Infiltration)
Lot 1 Average Day Demand 18.20 gpm (Domesic Flow+ Infiltration)
Residential Dwelling Units X 182
Residents/Unit 2.17 (COB DSSP 5.2.4.B.)
Population 394.94
P= 0.395 (Population/Thousands)
Peaking Factor= Qmax = 18+,IP--4+� (P—Population/thousands)
Qave
Peaking Factor= 4.03
Lot 1 Max Demand 73.35 gpm
Lot 2(Gallatin County Rest Home):
Lot Area x 4.04 Acres
Infiltration Rate 150 Gal/Acre/Day
Lot 2 Infiltration Rate 606 Gal/Day
Lot 2 Infiltration Rate 0.42 gpm
Provided by Gallatin County Rest Home
Maximum Occupancy 112 x (Includes Housing and Employees)
Average Domestic Flow 64.4 Gal/Capita/Day (COB DSSP 5.2.4.B.)
Average Domestic Flow 7212.8 Gal/Day
5.01 gpm
Lot 2 Average Day Demand 7818.8 Gal/Day (Domesic Flow+Infiltration)
Lot 2 Average Day Demand 5.43 gpm (Domesic Flow+Infiltration)
Maximum Occupancy 112 (Includes Housing and Employees)
P= 0.112
Qmax _ 18+VTP
Peaking Factor= — 4+� (P=Population/thousands)
Qave
Peaking Factor= 4.15
Lot 2 Max Demand 22.53 gpm
Lot 3:
Zoning R-4
Lot Area X 0.184 Acres
Domestic Flow+Infiltration 2,950 Gal/Acre/Day
Lot 3 Average Day Demand 543 Gal/Day
Lot 3 Average Day Demand 0.38 gpm
Table 5.2.1 —Wastewater Flow By Zoning Designation
Zoning Domestic Domestic Flow
Designation Zoning Description Flow- +Base Infiltration�li,i3
(gpad) (gpad)
R-S Residential Suburban District 60 210
R-1 Residential Single-Household Low Density
District ___ 430
Residential Two-Household Medium Density
R 2 District 490 640
R-3 Residential Medium Density District 2.100 2,250
R-4 Residential High Density District 2,800 2,950
Average Day Demand 543 Gal/Day
Per Capita Flow Rate 64.4 Gal/Capita/Day (COB DSSP 5.2.4.B.)
Equivalent Population 8 = (543 gpd/64.4 gal per capita)
P= 0.008
Qmax _ 18+�/_p
Peaking Factor= — 4+� (P=Population/thousands)
Qave
Peaking Factor= 4.42
Lot 3 Max Demand 1.67 gpm
Lot 4:
Zoning R-4
Lot Area X 0.427 Acres
Domestic Flow+Infiltration 2,950 Gal/Acre/Day
Lot 4 Average Day Demand 1,260 Gal/Day
Lot 4 Average Day Demand 0.87 gpm
Table 5.2.1—Wastewater Flow By Zoning Designation
Domestic Domestic Flow 43)
Zoning Designation Zoning Description Flow" + Base Infiltration"],
(gpad) (gpad)
R-S Residential Suburban District 60 210
Residential Single-Household Low Density
R-1 District 280 430
R 2 Residential Two-Household Medium Density
District 490 640
R-3 Residential Medium Density District 2,100 2,250
R-4 Residential High Density District 2,800 2,950
Average Day Demand 1,260 Gal/Day
Per Capita Flow Rate 64.4 Gal/Capita/Day
Equivalent Population 20 = (1,260 gpd/64.4 gal per capita)
P= 0.020
Qmax = 4+18+�
Peaking Factor= � (P=Population/thousands)
Qave
Peaking Factor= 4.38
Lot 4 Max Demand 3.83 gpm
Total Combined Demand (Entire Subdivision):
Tota[MaxDemandl 101.38 gpm