HomeMy WebLinkAbout028 Water and SewerGran Cielo Subdivision
Phase 3
Preliminary Plat
Application
28 - Water and Sewer
New water and sewer mains are proposed with this development to serve the future residents of
Gran Cielo Phase 3. There currently exists an 8-inch ductile iron water main in the right of way
of Apex Drive, South 27th Avenue, Bennett Boulevard, and South 29th, fully surrounding the
subject property. The proposed water main extensions will tie into the mains within the right of
way of South 27th Avenue, Apex Drive and Bennett Boulevard. The water main extensions will
be located primarily within privately maintained alleys within the subdivision. One section of the
water main will dead end at a length of approximately 210 feet with a hydrant. Additional
hydrants will be located throughout the site in accordance with the City of Bozeman’s Design
and Construction Standards.
The subject property is located adjacent to two 8-inch PVC sanitary sewer mains, one extending
approximately 400 feet from South 27th Avenue along Apex Drive to the north, and along
Bennett Boulevard to the south. The proposed development of Gran Cielo Phase 3 will extend
the sewer main in Apex Drive approximately 130 feet to the west where a manhole will be
installed and the main extended south within the privately maintained alley. Additionally, the
sewer main will be extended south from the existing manhole in Apex Drive a short distance in
South 28th Avenue and then in privately maintained alleys.
While it is understood that the City of Bozeman prefers the mains to run within the right of way
of public roadways, it is necessary to utilize the alleys right of way to avoid performing almost
30 street cuts. On October 16th, 2025, WWC met with the city to review the proposed
infrastructure layout. In that meeting the city stated that they will accept the layout as-is. Please
refer to the included water and sewer exhibit showing the proposed layout of water and sewer
infrastructure.
The Gran Cielo Subdivision is within the Meadow Creek Sewer Payback District. Please see
included correspondence regarding the payments. The developer believes that they have
sufficiently compensated the payback district, but please advise if there remains an outstanding
balance.
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.
The property owner does not currently possess any water rights for the proposed
subdivision property. In the previous Site Plan submittal for Gran Cielo Subdivision, Block
14, Phase 1 a sum of $117,552.00 was calculated for the required cash-in-lieu of water
Gran Cielo Subdivision
Phase 3
Preliminary Plat
Application
rights. See the included calculations included in this section. For the proposed development
of Gran Cielo Subdivision, Phase 3, a sum of $75,996.00 is required. Due to the reduction in
proposed units, the developer requests a refund or credit for the excess paid amount of
$41,556.00, in the event that this was previously paid. Please see included correspondence
related to the previous calculations of CILWR.
b. The information needed to demonstrate proposed compliance with division 38.270. Special
care is needed when concurrent construction is proposed.
No concurrent construction is proposed with this development. All underground utilities
and roadways will be built at one time.
28 – Water and Sewer
Water and Sewer Exhibit
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)EXISTING BENNETT BOULEVARD(60' R.O.W.)PROPOSED ALLEY(30' R.O.W.)PROPOSED ALLEY(30' R.O.W.)PROPOSED SOUTH 28TH AVENUE
(60' R.O.W.)
PROPOSED ALLEY
(30' R.O.W.)EXISTING 15" PVCSEWER MAINEXISTING 8" PVCSEWER MAINEXISTING 24" RCPSTORM MAINEXISTING 15" RCPSTORM MAINEXISTING 18" RCPSTORM MAINEXISTING 8" DIWATER MAINEXISTING 15" PVCSTORM MAINEXISTING 15" RCPSTORM MAINEXISTING 8" DIWATER MAINEXISTING 8" DIWATER MAINEXISTING 10" PVCSEWER MAINPROPOSED 8"DI WATERMAIN (TYP.)PROPOSED 8"PVC SEWER MAIN(TYP.)PROPOSEDIRRIGATION PITPROPOSEDSTORM WATERRETENTIONPONDEXISTING SOUTH 29TH AVENUE(60' R.O.W.)BLOCK 8BLOCK 6 BLOCK 7BLOCK 5
BLOCK 3
BLOCK 2 BLOCK 1BLOCK 4
K:\Bozeman\Bozeman Haus LLC\2025380 Gran Cielo 1 – Phase 3\05CAD\Sheets\WATER AND SEWER LAYOUT.dwg 11X17 LAND 1/27/2026 11:24:50 AM
0SCALE: 1" = 80'80'40'DESIGNED BY:DRAWN BY:CHECKED BY:DATE:EWRHDWEWR01/27/2026SHEET1NO.DATEREVISIONPREPARED BY BY
WATER AND SEWER EXHIBIT
BOZEMAN HAUS, LLC
YELLOWSTONE COUNTY, MT
GRAN CIELO SUBDIVISON, PHASE 3 ENGINEERING
PROJECT NO. 2025380
895 TECHNOLOGY BLVD., SUITE 203
BOZEMAN, MT 59718
(406) 586-0262
www.wwcengineering.com
28 – Water and Sewer
Water Demand Estimates
Design Water Usage Analysis
Gran Cielo Subdivision, Phase 5
Existing Zoning (R-5)
Average Day Demand
Zoning R-5
Area 6.69 acres
Average Day Demand 4560 gpad COB DCS Table 4.2.2
Average Daily Demand 30,506 gpd
1271.08 gph
21.18 gpm
Fire Flow Demand
Design Fire Flow 3,000 gpm COB DCS Table 4.2.4
(Community and Neighborhood Business)
Peak Hour Water Usage
Peaking Factor = 2.3 COB DCS Table 4.2.3
Peaking Factor = 3.0 COB DCS Table 4.2.3
Average Daily Usage 30,506 gpd
Maximum Daily Demand 70,164 gpd
Maximum Hour Usage 91,518 gpd
Maximum Hour Usage 3813.3 gph
Maximum Hour Usage 63.6 gpm
Total Max. Hour Usage (including Fire Flow)3063.60 gpm
Total Max. Hour Usage (including Fire Flow)6.83 cfs
x
Design Water Usage Analysis
Gran Cielo Subdivision, Phase 3
Planned Residential Development
Average Day Demand
Residential Dwelling Units 64
Residents/Unit 2.17 (COB DSSP 4.2.4.B.)
Gallons/Capita/Day 135 (COB DSSP 4.2.4.B.)
Average Daily Demand 18,749 gpd
781.21 gph
13.02 gpm
Peak Hour Water Usage
Peaking Factor = 3.0 COB DSSP Table 4.2.3
Average Daily Usage 18,749 gpd
Maximum Hour Usage 56,247 gpd (Avg. Daily Demand x Peaking Factor)
Maximum Hour Usage 2,344 gph
Maximum Hour Usage 39 gpm
Maximum Hour Usage 0.09 cfs
Fire Flow Demand
Design Fire Flow = 3,000 gpm COB DSSP Table 4.2.4
(Medium and High Density Residential)
Total Demand
Total Max. Hour Usage 3,039 gpm (Max. Hour Usage + Fire Flow)
Total Max. Hour Usage 6.77 cfs (Max. Hour Usage + Fire Flow)
x
x
Page 1
28 – Water and Sewer
Sewer Demand Estimates
Design Wastewater Usage Analysis
Gran Cielo Subdivision, Phase 3
Existing Zoning (R-5)
Average Daily Flow
Zoning R-5
Area 6.69 acres
Domestic Flow + Infiltration Rate 2950 gpad COB DCS Tabel 5.2.1
Average Daily Flow 19,736 gpd
822.33 gph
13.71 gpm
Peak Hour Factor:
Equivalent Population
Total Average Daily Flow 19,736 gpd
Per Capita Flow Rate 117 gal/capita COB Wastewater Facility Plan
Equivalent Population 169 = (19,736 gpd/117gal per capita)
=Q(max)= 18 + P
0.50 P = Population/thousands =169/1000 = 0.169
Q(ave)4 + P
0.50
Peak Hour Factor = 4.17
Peak Hour Demand
Average Day Demand 19,736
Peak Hour Demand 82,299 gpd
Peak Hour Demand 3,429.13 gph
Peak Hour Demand 57 gpm
Peak Hour Demand 0.13 cfs
Peaking
Factor
x
Design Wastewater Usage Analysis
Gran Cielo Subdivision, Phase 3
Planned Residential Development
Proposed
Average Daily Flow
Residential Dwelling Units 64
Residents/Unit 2.17 (COB DCS 5.2.4.B.)
Gallons/Capita/Day 64.4 (COB DCS 5.2.4.B.)
Average Daily Demand 8,944 gpd
372.67 gph
6.21 gpm
Infiltration Rate
Lot Area 6.69 acres
Base Infiltration Rate 150 gallons/acre/day (COB DCS 5.2.4.C.)
Infiltration Rate 1,004 gpd
Average Daily Demand + Base Infiltration
ADD 8,944 gpd
Infiltration Rate 1,004 gpd
Demand 9,948 gpd
414.50 gph
6.91 gpm
Peaking Factor (COB DSSP 5.2.5)
Residential Dwelling Units 64
Residents/Unit 2.17 (COB DCS 5.2.4.B.)
Population 138.88
P = 0.13888 (Population/Thousands)
=Q(max)= 18 + P
0.50
Q(ave)4 + P
0.50
Peaking Factor = 4.20
Total Demand
Average Day Demand 9,948 gpd (Avg. Daily Demand +Infiltration Rate)
Peak Hour Demand 41,782 gpd (Avg. Day Demand x Peaking Factor)
Peak Hour Demand 1,741 gph
Peak Hour Demand 29 gpm
Peak Hour Demand 0.065 cfs
Peaking
Factor
x
x
x
x
+
Page 1
28 – Water and Sewer
Cash-in-lieu of Water Rights Calculations
DATE:11/19/2025
Project Name:
Applicant Name:
Applicant Address:
Average Annual Single-Family Residential Unit Demand =0.234 Acre-Feet/Unit
Average Annual Multi-Family Residential Unit Demand =0.124 Acre-Feet/Unit
Cash-In-Lieu Value1 =$6,000 per Acre-Foot
Sub-total
43
Sub-total
21
1 Cash-in-lieu value established by City Commission Resolution No. 4095
Block 2, Lots 1-5
CASH-IN-LIEU OF WATER RIGHTS
For Residential Development
No. of Single-Family
Units Paid CIL
Block 1, Lots 1-8
Block 6, Lots 1-7
SF CIL Fee
$60,372.00
8
5
4
Legal Description
Legal Description
Block 4, Lot 1
Block 7, Lots 2-7
Block 3, Lots 1-4
Block 8, Lots 1-7
Gran Cielo Subdivision, Phase 3
WWC Engineering
895 Technology Blvd, Suite 203
Bozeman, MT 59718
Single-Family Cash-In-Lieu Details
$75,996.00CIL Grand Total =
7
6
7
21
Multi-Family Cash-In-Lieu Details
No. of Multi-Family
Units Paid CIL
$15,624.00
MF CIL Fee
Block 5, Lots 2-7 6
28 – Water and Sewer
Cash-in-lieu of Water Rights Correspondence
DATE:10/25/2022
Project Name:
Applicant Name:
Applicant Address:
Average Annual Single-Family Residential Unit Demand =0.234 Acre-Feet/Unit
Average Annual Multi-Family Residential Unit Demand =0.124 Acre-Feet/Unit
Cash-In-Lieu Value1 =$6,000 per Acre-Foot
Sub-total
0
Sub-total
158
1 Cash-in-lieu value established by City Commission Resolution No. 4095
CASH-IN-LIEU OF WATER RIGHTS
For Residential Development
Multi-Family Cash-In-Lieu Details
No. of Single-Family
Units Paid CIL
SF CIL Fee
$0.00
Legal Description No. of Multi-Family
Units Paid CIL
Gran Cielo Subdivision Ph. II
Block 14, Lots 1-4, Section 23, T 02S, R 05E
Gran Cielo Ph. II - Blk 14
Bozeman Haus LLC
15267 SE Rivershore Dr.
Vancouver, WA 96683
Single-Family Cash-In-Lieu Details
Legal Description
$117,552.00
$117,552.00CIL Grand Total =
MF CIL Fee
158
28 – Water and Sewer
Meadow Creek Sewer Payback District
Correspondence
From: Erik Ringsak
Sent: Wednesday, November 19, 2025 10:30 AM
To: Henry Wilkey
Subject: FW: Meadow Creek Sewer Payback
FYI
Erik Ringsak, P.E. | Civil Department Manager
895 Technology Blvd, Ste 203 | Bozeman, MT 59718
O: 406.586.0262 | D: 406.898.3446 | C: 701.471.1099
www.wwcengineering.com
From: Anna Clifton Emard <annaemard@icloud.com>
Sent: Wednesday, November 19, 2025 10:19 AM
To: Carl Sanders <carl@videredev.com>
Cc: Erik Ringsak <eringsak@wwcengineering.com>
Subject: Re: Meadow Creek Sewer Payback
WARNING: This email originated from an external sender. Please use caution when clicking links
or opening attachments.
Hey Carl,
I don’t have receipts, but I have the check numbers that were drawn and mailed (and
cleared our account) for Sewer paybacks and the emails where I was instructed to cut
them.
on May 15, 2020 I have an email subject "Sewer Payback District" check (Payable to the
City) in the amount of $28,037.29. Unfortunately there was no additional info or name
referenced and therefore Meadow Creek wasn’t referenced on that check. This was cut
and sent out on 5/17/20.
However, on March 8, 2021 I have an email subject "Gran Cielo Payback District”
requesting total payment in the amount of $59,322.78 for Parcels 27 & 28 of the Recorded
Meadow Creek Sewer Payback. That also set out that $28,037.29 had already been paid
for Phase 1. So we cut a check in the amount of $31,285.49 on 3/10/21.
So the total paid was $59,322.78 but it was split as shown above.
Will this work the same as a receipt?
Thanks,
Anna
On Nov 19, 2025, at 8:21 AM, carl sanders <carl@videredev.com> wrote:
Hi Anna,
Can you look to see if we have a receipt for a few for Meadow Creek Sewer
Payback that would have been paid with the Gran Cielo Preliminary or Final
Plat?
Carl Sanders
<image001.png>
e: carl@videredev.com
c: 503-559-4782