HomeMy WebLinkAbout8- Floodplain Permit ApplicationJoint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 1
CD/Agency Use Only
Application Number: Date Received:
Stream or Waterbody:
Date Accepted: Initials: Date Forwarded to FWP:
This section is for all Department of Transportation and SPA 124 Permits (government projects)
Project Name:
Control Number: Contract Letting Date:
MEPA/NEPA Compliance: ☐Yes ☐No If yes, #C5 of this application does not apply.
Applicant Use
This is a standardized application to apply for one or all local, state, or federal
permits listed below. Check the box(s) for each permit being applied for.
• Refer to the instructions to determine which permits apply to your project and submit an application to each
applicable agency.
• Incomplete applications will result in a delay of application processing.
• The applicant is responsible for obtaining all necessary permits and landowner permission before beginning
work.
• Other laws may apply.
Permit Agency
Required Application
Sections: Fee
☐ NSLPA 310 Permit Local Conservation District A-E and G No fee
☐ SPA 124 Permit
Department of Fish, Wildlife &
Parks (FWP) A-E and G No fee
☐ 318 Authorization
401 Certification
Department of Environmental
Quality (DEQ) A-E and G
$250 (318);
$400-$20,000 (401)
☐
Navigable Rivers
Land Use License,
Lease, or Easement
Department of Natural Resources
and Conservation (DNRC), Trust
Lands Management Division A-E and G
$50, plus
additional fee
☐ Section 404 Permit,
Section 10 Permit
U.S. Army Corps of Engineers
(USACE) A-G and F1-10 Varied ($0-$100)
☒ Floodplain Permit Local Floodplain Administrator A-G Varied ($25-$500+)
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 2
A. APPLICANT INFORMATION
APPLICANT (party responsible for project) Hyalite Engineers, PLLC
Has the landowner consented to the project? ☒ Yes ☐ No
Mailing Address: 161 West Haley Springs Ste 101 City, State: Bozeman, Montana Zip: 59718
Physical Address: 161 West Haley Springs Ste 101 City, State: Bozeman, Montana Zip: 59718
Daytime Phone: 406-587-2781 Email: bmegaard@hyaliteeng.com
LANDOWNER NAME (if dierent from applicant) Landern West LLC
Mailing Address: 110 W Beall St # 604 City, State: Bozeman, Montana Zip: 59715
Physical Address: 705 S Church Ave City, State: Bozeman, Montana Zip: 59715
Daytime Phone: Email:
CONTRACTOR/COMPANY NAME (if applicable)
Mailing Address: City, State: Zip:
Physical Address: City, State: Zip:
Daytime Phone: Email:
B. PROJECT SITE INFORMATION
Refer to section B1 of the instructions
1. NAME OF STREAM OR WATERBODY at project location: Bozeman Creek
Project Address/Location: 705 S Church Ave Nearest Town: Bozeman Montana
County: Gallatin Geocode: 06-0799-07-4-01-05-0000
Township: 02 S Range: 06 E Section: 07 ¼ Section: SW ¼ Section: SE
Latitude: 45.671667 Longitude: 111.030833
Driving directions or other instructions needed for finding the site: From the intersection of Main street and S
Church head half a mile south on church to the residence.
Refer to section B2 of the instructions
2. Is the proposed activity within SAGE GROUSE areas designated as general, connected, or core habitat?
☐ Yes ☒ No Attach consultation letter if required.
Refer to section B3 of the instructions
3. Is this a STATE NAVIGABLE WATERWAY? The state owns the beds of certain navigable waterways.
☐ Yes ☒ No If yes, send a copy of this application to the appropriate DNRC land oLice.
Refer to section B4 of the instructions
4. WHAT IS THE CURRENT CONDITION of the proposed project site? What vegetation is present? Describe the
existing bank condition, bank slope, height, nearby structures, and wetlands.
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 3
The site currently has a house on the property and the west side of the property has dense vegetation along the
creek banks. Generally the property slopes to the creek with 50% slopes along the creek banks. The banks are
approximalely 1-2 feet high. The creek is approximately 300 feet from S Church.
C. PROJECT ACTIVITY INFORMATION
Refer to section C1 of the instructions
1. TYPE OF PROJECT (check all that apply)
☐ Agricultural and Irrigation Projects: Diversions, Headgates, Flumes, Riparian Fencing, Ditches, etc.
☐ Buildings/Structures: Accessory Structures, Manufactured Homes, Residential or Commercial Buildings, etc.
☐ Channel/Bank Projects: Stabilization, Restoration, Alteration, Dredging, Fish Habitat, Vegetation or Tree
Removal, or any other work that modifies existing channels or banks.
☐ Crossing/Roads: Bridge, Culvert, Fords, Road Work, Temporary Access, or any project that crosses over or
under a stream or channel.
☐ Mining Projects: All mining related activities including, Placer Mining, Aggregate Mining, etc.
☐ Recreation Related Projects: Boat Ramps, Docks, Marinas, etc.
☒ Other Projects: Cisterns, Debris Removal, Excavation/Pit/Pond, Placement of Fill, Drilling or Directional Boring,
Utilities, Wetland Alteration. Any other project type not listed here.
Refer to section C2 of the instructions
2. Is this application for an ANNUAL MAINTENANCE PERMIT? ☐ Yes ☒ No
If yes, attach an annual plan of operations to this application
Refer to section C3 of the instructions
3. Why is this project necessary? State the PURPOSE OR GOAL of the proposed project.
The proposed project is to construct new townhomes on the property. In order to provide a sanitary sewer service
to the townhomes, it requires the sewer service to be directional bored underneath Bozeman Creek and tie into the
city of Bozeman’s sanitary sewer system.
Refer to section C4 of the Instructions
4. Provide a brief description of the PROPOSED PROJECT PLAN and how it will be accomplished.
As part of the construction of the townhomes, it is proposed that a septic tank/ dose tank with a grinder pump to
be installed outside the residence. The residence is located on the east side of the property and the sewer main is
located on the west side of the property across Bozeman Creek. In order to serve the residence with sanitary sewer
services, it is proposed that the eLluent will leave the dose tank and be transport to a sewer main. It is proposed
that the transmission service to be directionally bored underneath Bozeman Creek to the sewer main.
Refer to section C5 of the instructions
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 4
5. What OTHER ALTERNATIVES were considered to accomplish the stated purpose of the objective? Why was the
proposed alternative selected?
An onsite septic system was proposed but because the property is within the city limits and would have to connect
to city infastructure. The City sewer system along S Church does not have the capacity to serve the residence and
is in need of repair.
Refer to section C6 of the instructions
6. What are the NATURAL RESOURCE BENEFITS or POTENTIAL IMPACTS? Please complete the information
requested below to the best of your ability:
6a. Explain any temporary or permanent changes in erosion, sedimentation, turbidity, or increases of
potential contaminants. What will be done to minimize impacts?
It is proposed that the directional bore will be outside of the flood plain and banks of Bozeman Creek, in order to
minimize any impact to Bozeman Creek. Erosion control, perimeter control and other BMP’s are to be installed
around Bozeman Creek to minimize any impacts to Bozeman Creek. Any disturbed areas from construction will be
restabilized.
6b. Will the project cause temporary or permanent impacts to fish and/or aquatic habitat? What will be
done to protect the fisheries and habitat?
The proposed directional bore will be outside of the flood plain of Bozeman Creek, so we do not anticipate any
temparray or permanent impact to fish or aquatic habitats.
6c. What will be done to minimize temporary or permanent impacts to the floodplain, wetlands, or riparian
habitat?
It is proposed that the directional bore will be outside of the flood plain and banks of Bozeman Creek, in order to
minimize any impact to Bozeman Creek. Erosion control, perimeter control and other BMP’s are to be installed
around Bozeman Creek to minimize any impacts to Bozeman Creek. Any disturbed areas from construction will be
restabilized.
6d. What eLorts will be made to decrease flooding potential upstream and downstream of the project?
It is proposed that the directional bore will be outside of the flood plain and banks of Bozeman Creek, in order to
minimize any impact to Bozeman Creek. Erosion control, perimeter control and other BMP’s are to be installed
around Bozeman Creek to minimize any impacts to Bozeman Creek. Any disturbed areas from construction will be
restabilized.
6e. Explain any potential temporary or permanent changes to the water flow or to the bed and banks of the
waterbody. What will be done to minimize those changes?
There are no proposed temporary or permanent changed to the water flow or banks of Bozeman creek as the
proposed work will be outside of the flood plain of the creek.
6f. How will existing vegetation be protected and its removal minimized? Explain how the site will be
revegetated, including weed control plans.
Due to the all the work being out of the flood plain of the creek, this will minimized and protect the existing
vegetation. Any areas disturbed by construction activities will be seeded and restablized after construction is
complete.
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 5
D. CONSTRUCTION DETAILS
Refer to section D1 of the instructions
1. Proposed CONSTRUCTION DATES: Start: Summer 2025 End: Summer 2026
Is any portion of the work already completed? ☐ Yes ☒ No If yes, please describe previously completed work:
Refer to section D2 of the instructions
2. PROJECT DIMENSIONS. Describe the length and width of the project.
The bore is proposed to start approx. 95 feet east from the highwater mark of Bozeman Creek which is outside of
the 100-year flood plain of Bozeman Creek. The bore will end approx. 99 feet west from the highwater mark of
Bozeman Creek which is also outside of the 100-year flood plain of Bozeman Creek. We do not anticipate any
encroach into the water body.
Refer to section D3 of the instructions
3. MATERIALS. Provide the total quantity and source of materials proposed to be used or removed. Note: this may
be modified during the permitting process, therefore it is recommended that you do not purchase materials until
all permits are issued. List soil/fill type, cubic yards and source, culvert size, rip-rap size, and any other materials to
be used or removed on the project.
Cubic yards/ Linear Feet Size and Type Source
No soil or fill material is proposed
to be used within the flood plain or
water body.
Refer to section D4 of the Instructions
4. EQUIPMENT. List all equipment that will be used for this project. How will the equipment be used on the bank
and/or in the water? Note: all equipment used in the water must be CLEANED, DRAINED, AND DRY.
Excavator and a boring machine will be used for the project. However, no equipment is proposed to be used within
the bank or in the water of Bozeman Creek
Will equipment from out of state be used? ☐ Yes ☒ No ☐ Unknown
Will the equipment cross west over the Continental Divide to the project site? ☐ Yes ☒ No ☐ Unknown
Will equipment enter the Flathead Basin? ☐ Yes ☒ No ☐ Unknown
E. REQUIRED ATTACHMENTS
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 6
1. Plans and/or drawings of the proposed project should include:
a. Plan/Aerial View
b. An elevation or cross-section view
c. Dimensions of the project (height, width, depth in linear feet)
d. Location of storage stockpile materials and location of fill or excavation sites
e. Drainage facilities
f. Location of existing/proposed structures, such as buildings, utilities, roads or, bridges
g. An arrow indicating north
h. Site photos
2. Attach a vicinity map or a sketch, which includes: The water body where the project is located, roads,
tributaries, and other landmarks. Plan an "X" on the project location. Provide written directions to the site.
This is a plan view (looking at the project from above).
3. If requesting a Maintenance 310 Permit, attach an Annual Plan of Operation.
4. Attach an Aquatic Resource Map, which documents the location and boundary of all waters of the U.S. in the
project vicinity and includes wetlands and other special aquatic sites. Show the location of the ordinary high-
water mark of streams or waterbodies if requesting a Section 404 or Section 10 Permit. Include the ordinary
high-water mark delineation on plans or drawings and/or a separate wetland delineation.
F. ADDITIONAL INFORMATION FOR US ARMY CORPS OF ENGINEERS (USACE) SECTION 404, SECTION 10, AND
FLOODPLAIN PERMITS
Refer to section F of the instructions
Section F should only be filled out by those needing Section 404, Section 10, and/or Floodplain permits.
Applicants applying for Section 404 and/or Section 10 permits must complete questions F1-10. For questions on
Section 404 and/or Section 10 permits, contact the USACE by telephone at 406-441-1375 or by email at
montana.reg@usace.army.mil.
Applicants applying for Floodplain permits must complete all of Section F.
Refer to section F1 of the instructions
1. Does the proposed activity and/or property have permitting history with USACE? If yes, and available, provide the
USACE project number(s) associated with the previous permits, including no permit required letters and approved
jurisdictional determinations.
N/A
Refer to section F2 of the instructions
2. Identify the specific Nationwide Permit(s) that you want to use to authorize the proposed activity.
N/A
Refer to section F3 of the instructions
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 7
3. Provide the footprint of impacts and the quantity of materials proposed to be placed in wetlands and/or below
the ordinary high-water mark in waters of the United States. Delineations are required of wetland and other special
aquatic sites, and other waters, such as lakes and ponds, and perennial, intermittent, and ephemeral streams, on
the project site.
3a. What is the length and width (or square footage/acreage) for each impact occurring within the waters of
the United States, including wetlands?
N/A
3b. How many cubic yards of fill material will be placed below the ordinary high-water mark, in a wetland,
stream, or other waters of the United States?
N/A
Refer to section F4 of the instructions
4. How will the proposed project avoid or minimize impacts to waters of the United States? Attach additional
sheets if necessary.
N/A
Refer to section F5 of the instructions
5. Will the project impact(s) be equal to or greater than 0.10 acre of wetland and/or 0.03 acre of stream or other
waters? If yes, describe how the applicant is going to compensate (mitigation bank, in-lieu fee program, or
permittee responsible) for these unavoidable impacts to waters of the United States.
N/A
Refer to section F6 of the instructions
6. Is the proposed activity within any component of the National Wild and Scenic Rivers System, or a river that
has been oLicially designated by Congress as a “study river?” ☐ Yes ☒ No
Refer to section F7 of the instructions
7. Does this activity require permission from the USACE because it will alter or temporarily or permanently
occupy or use a USACE authorized civil works project? (Examples include USACE owned levees, Fort Peck Dam,
and others). ☐ Yes ☒ No
Refer to section F8 of the instructions
8.List the ENDANGERED AND THREATENED SPECIES and CRITICAL HABITAT(S) that might be present in the
project location.
N/A
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 8
Refer to section F9 of the instructions
9. List any HISTORIC PROPERTY(S) that are listed, determined to be eligible or are potentially eligible (over 50
years old) for listing on the National Register of Historic Places.
N/A
Refer to section F10 of the instructions
10. List all APPLICABLE LOCAL, STATE, AND FEDERAL PERMITS and indicate whether they were issued, waived,
denied, or pending. Note: all required local, state, and federal, or proof of waiver must be issued prior to the
issuance of a floodplain permit.
N/A
Refer to section F10 of the instructions
11. List the NAMES AND ADDRESS OF LANDOWNERS adjacent to the project site. This includes properties to and
across from the project site. Note: Some floodplain communities require certified adjoining landowner lists.
NAME/ADDRESS OF Adjacent Landowner: Peter Jacoby & Jeanne Wagner, 623 S Church Ave, Bozeman, MT 59715
NAME/ADDRESS OF Adjacent Landowner: Dahlinger Court Condo Master, 719 S Chruch Ave, Bozeman, MT 59715
NAME/ADDRESS OF Adjacent Landowner: City of Bozeman
NAME/ADDRESS OF Adjacent Landowner:
Refer to section F11 of the instructions
12. Floodplain Map Number: 30031C0816E & 30031C0817E
Refer to section F11 of the instructions
13. Does this project comply with local planning or zoning regulations? ☒ Yes ☒ No
Joint Application for Proposed Work in Montana’s Streams, Wetlands,
Floodplains, and Other Waterbodies
Version: 11/15/2024 https://dnrc.mt.gov/Licenses-and-Permits/Stream-Permitting/ Page 9
G. SIGNATURE REQUIREMENTS
Refer to section G of the instructions
Some agencies require original signatures for an application to be considered complete. After completing the
application form, make the required number of copies and sign each copy. Send the copies with original signatures
and additional information required directly to each applicable agency.
The statements contained in this application are true and correct. The applicant possesses the authority to
undertake the work described herein or is acting as the duly authorized agent of the landowner. The applicant
understands that the granting of a permit does not include landowner permission to access land or construct a
project. Inspections of the project site after notice by inspection authorities are hereby authorized.
*By signing or typing my name on the signature line below, I hereby swear and airm that I am the appl icant for this
project and am responsible for all information contained in this application.
*APPLICANT (party responsible for project)
Brett Megaard (Hyalite Engineers)
Print Name
06/20/2025
Signature of Applicant Date
LANDOWNER (If diLerent from applicant)
Landern West LLC (Sasha Slorer)
Print Name
06/20/2025
Signature of Landowner
CONTRACTOR (If applicable. Contact agency to determine if contractor signature is required)
Print Name of Primary Contract Company/Entity Name (If applicable)
Signature of Contractor Date
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REVISIONSDATEPROJECT NUMBERHYALITE Engineers, PLLC161 W. Haley Springs RoadBozeman, MT 59715Tel: (406) 587.2781w w w . hyaliteeng. comFax: (406) 522.92252021705 SOUTH BOZEMAN, MT8.7.202521359622x34 ORIGINALS CHURCH AVENUESCALESHEET TITLEDESIGN BYSte. 101MONTANABRETT C.No. 29106 PEMEGAARDPEFORSOILNASRENI
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ENE PROPERTY LINEEXISTING OVERHEAD POWEREXISTING 8" SEWER MAINPROPOSED 4" SDR 26 PVC SEWER SERVICEPROPOSED 1.5" DR 9 FORCE MAINEXISTING 6" CAST IRON WATER MAINEXISTING WATER SERVICE LINEPROPOSED 2" COPPER WATER SERVICEEXISTING SIDEWALKPROPOSED SIDEWALK/WALKWAYFINISHED GROUND ELEVATIONEXISTING HYDRANTEXISTING SANITARY SEWER MANHOLEEXISTING VALVEEXISTING POWER POLEMASTER LINE & SYMBOL LEGEND1000OHP8''S6''WWATSHYD2''WSEW2''FMEXISTINGSEWERMAINEXISTINGWATERMAINPROPOSED 2" WATER SERVICEEXISTINGFIREHYDRANT-TO BERELOCATED705 S CHURCHLEGAL DESCRIPTIONBEING BOOK 156 OF FILMS, PAGE 4066, LOCATED IN PORTIONS OF THE SW 14 OF THE SE 14SECTION 7, TOWNSHIP 2 SOUTH, RANGE 6 EAST, P.M.M. CITY OF BOZEMAN, GALLATINCOUNTY, MONTANA.ABANDONEXISTINGWATERSERVICEPROPOSED DRIVEWAYPROPOSED STORM PONDAPPROX. 951 CF STORAGE(GRADE DITCH/PIPING TODRAIN TO LOCATION)EXISTING DELINEATEDFLOODPLAINEXISTING WATERWAYEXISTING FLOODPLAINEXISTING FLOODWAYSTORMWATER DITCH OR 6 IN. DIA. PIPE TOCONVEY PARKING SURFACE RUNOFF ANDROOF DRAINAGE STORMWATER (SLOPE AT0.50% TO ENSURE ADEQUATE DRAINAGE)COORDINATEWITH NWEON DEMO& NEW UTIL.PROPOSED 1.5" FORCE MAINTO BE PRIVATELYMAINTAINEDPROPOSED BORE AND SLEEVEUNDER BOZEMAN CREEKPROPOSEDGRINDER PUMPBASINPROPOSEDCLEANOUT (TYP.)PROPOSED4-BEDROOMTOWNHOMEPROPOSED5-BEDROOMTOWNHOMEPROPOSED 8"X4" SEWERSERVICE INSERTA TEEAPPROX. PROPERTYBOUNDARY (TYP.)PROPOSED STORM PONDAPPROX. 887 CF STORAGE(GRADE DOWNSPOUTS TODRAIN TO LOCATION VIA SWALES)PROPOSED SIDEWALKTIE INTO EXISTINGSIDEWALKPROPOSED30'SEWEREASEMENTPROPOSED 213' BORE AND SLEEVE UNDER BOZEMAN CREEKPROPOSED 4" SEWERSERVICE TO BEMAINTAINED BY THECITY OF BOZEMANCONTROL PANELTO BE MOUNTEDTO TOWNHOMENOTES:THE SEPTIC TANK, GRINDER PUMPBASIN AND FORCE MAINS WILL BEPRIVATELY MAINTAINEDLOT: 126436 SQFT0.61 ACLOT 2:34298 SQFT0.79 ACPROPOSED 1"WATER SERVICEEXISTING GEO-REFERENCEDFLOODPLAIN75' WATERCOURSESETBACK FROM HIGHWATER MARK75' WATERCOURSESETBACK FROM HIGHWATER MARK
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REVISIONSDATEPROJECT NUMBERHYALITE Engineers, PLLC161 W. Haley Springs RoadBozeman, MT 59715Tel: (406) 587.2781w w w . hyaliteeng. comFax: (406) 522.92252021705 SOUTH BOZEMAN, MT8.7.202521359622x34 ORIGINALS CHURCH AVENUESCALESHEET TITLEDESIGN BYSte. 101MONTANABRETT C.No. 29106 PEMEGAARDPEFORSOILNASREN
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ENE PROPERTY LINEEXISTING OVERHEAD POWEREXISTING 8" SEWER MAINPROPOSED 4" SDR 26 PVC SEWER SERVICEEXISTING 6" CAST IRON WATER MAINEXISTING WATER SERVICE LINEPROPOSED 1" COPPER WATER SERVICEEXISTING SIDEWALKPROPOSED SIDEWALK/WALKWAYFINISHED GROUND ELEVATIONEXISTING HYDRANTEXISTING SANITARY SEWER MANHOLEEXISTING VALVEEXISTING POWER POLEMASTER LINE & SYMBOL LEGEND1000OHP8''S6''WWATSHYD2''WSEWPROPOSED 2" WATER SERVICE705 S CHURCHLEGAL DESCRIPTIONBEING BOOK 156 OF FILMS, PAGE 4066, LOCATED IN PORTIONS OF THE SW 14 OF THE SE 14SECTION 7, TOWNSHIP 2 SOUTH, RANGE 6 EAST, P.M.M. CITY OF BOZEMAN, GALLATINCOUNTY, MONTANA.PROPOSED SEWER SERVICE& PRIVATE (TEMPORARY)LIFT STATIONFEMA FLOODPLAINCROSS SECTION AC(APPROX.BFE = 4842.1)FEMA FLOODPLAINCROSS SECTION AD(APPROX.BFE = 4843.3)EXISTING DELINEATED (SITE SPECIFIC)FLOODPLAIN (ZONE AE FLOOD FRINGE)EXISTINGEDGE OFWATERWAYEXISTING DELINEATED (SITE-SPECIFIC)FLOODPLAIN (ZONE AE FLOOD FRINGE)EXISTING REGULATORYFLOODWAY(GEO-REFERENCED & SITESPECIFIC)EXISTING GEO-REFERENCEDFLOODPLAINEXISTING GEO-REFERENCEDFLOODPLAINPROPOSED 1" WATER SERVICEPROPOSEDTOWNHOMEBTM FF = 4844.43PROPOSEDTOWNHOMEBTM FF = 4844.4375' WATERCOURSESETBACK FROM HIGHWATER MARK75' WATERCOURSESETBACK FROM HIGHWATER MARK
48144824483648484814482448364848-0+500+004844.34839.314843.04835.650+504843.04831.984842.54831.201+004841.44831.204841.04831.201+504840.9
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4839.663+504+004+505+004" Ø SDR 26 PVC L=20.06' S=2.20%4" Ø SDR 26 PVC L=27.90' S=2.00%INSTALL 280 LF OF 1.5" Ø DR 9 HDPESANITARY SEWER FORCE SERVICETO BE PRIVATELY MAINTAINEDSTA. 0+23.47 (0.00')CONNECT 1.5" ∅ FORCE MAINTO 4" SDR 26 END CAPINV ELEV. = 4839.54'INSTALL 21 LF OF 4" Ø SDR 26SANITARY SEWER SERVICETO BE MAINTAINED BY THECITY OF BOZEMAN4" ∅ BORE & SLEEVE FOR 1.5" Ø DR-9 HDPEL=213.01' S=0.00% INV ELEV.=4831.204" Ø SDR 26 PVC L=21.49' S=-2.00%STA. 0+01.99EXISTING 8"Ø CLAY PIPEINSTALL 8" X 4" INSERTA TEEINV. ELEV.= 4838.32GRINDER PUMP BASIN
STA. 3+03.08 (0.00' )
RIM ELEV = 4843.38
SE 4"∅ INV IN = 4838.72
W 1.5"∅ INV OUT = 4838.64 OHPOHPOHPOHPOHPOHPOHPOHPOHPSSWAT
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4850C1.2AS NOTEDFORCE MAIN PLAN &PROFILETGHEC Aug 07, 2025 - 3:27pmCAD FILE: M:\213596\Drawings\_Subdivision Review\C 1.0.dwg
REVISIONSDATEPROJECT NUMBERHYALITE Engineers, PLLC161 W. Haley Springs RoadBozeman, MT 59715Tel: (406) 587.2781w w w . hyaliteeng. comFax: (406) 522.92252021705 SOUTH BOZEMAN, MT8.7.202521359622x34 ORIGINALS CHURCH AVENUESCALESHEET TITLEDESIGN BYSte. 101MONTANABRETT C.No. 29106 PEMEGAARDPEFORSOILNASREN
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ENE0'20'40'60'SCALE1" = 20' HORIZ.1" = 5' VERT.CONTOUR INTERVAL = 1FORCE MAIN PLAN & PROFILESTA. -0+50 TO STA. 5+00EXISTING GRND. ELEV. @ ℄
PIPE INV. ELEV. @ ℄BORE & SLEEVEUNDER BOZEMANCREEK APPROX.213 LFPROPOSED CLEANOUT (TYP.)280 LF OF 1.5-INCHPRESSURIZEDTRANSPORT PIPECONNECT EXISTING8" Ø CLAY SEWERMAIN W/ 8"X4"INSERTA TEE6.5' MIN COVERPROPOSED4-BEDROOMTOWNHOMEPROPOSED5-BEDROOMTOWNHOMEEXISTINGEDGE OFWATERWAYEXISTING GEO-REFERENCEDFLOODPLAINEXISTING GEO-REFERENCEDFLOODPLAINPROPERTY BOUNDARY (TYP.)BOZEMAN CREEK
BTM FF. = 4844.43TOP FF. = 4856.00NOTES:THE SEPTIC TANK, GRINDER PUMPBASIN AND FORCE MAINS WILL BEPRIVATELY MAINTAINEDCONTROL PANELTO BE MOUNTEDTO TOWNHOMEPROPOSED30'SEWEREASEMENT
088P
TABLE 7FLOODING SOURCEFLOODWAYWIDTH(FEET)SECTIONAREA(SQUARE FEET)MEANVELOCITY(FEET PERSECOND)BASE FLOOD WATER SURFACE ELEVATION(FEET NAVD)WITHOUTFLOODWAYWITHFLOODWAYINCREASEREGULATORYCROSS SECTION DISTANCE1V1453.67,918 4,924.24,924.2 0.01074,924.2W1811.78,422 4,927.94,928.30.41354,927.9X684.58,835 4,931.44,931.70.3674,931.4Y933.39,245 4,933.54,933.70.2464,933.5Z983.19,834 4,936.54,936.80.3574,936.5AA843.610,488 4,942.44,942.7 0.31094,942.4AB1092.711,080 4,949.34,949.8 0.5594,949.3AC377.011,625 4,954.34,954.3 0.0254,954.3AD962.711,952 4,958.54,958.9 0.4454,958.5AE624.212,412 4,961.94,962.3 0.4394,961.9AF813.212,924 4,968.34,968.7 0.4424,968.3AG594.413,370 4,972.64,972.9 0.3364,972.6AH1112.313,851 4,977.94,978.4 0.59024,977.9AI294.314,287 4,984.04,984.20.25524,984.0AJ274.014,697 4,989.84,989.80.0174,989.8AK325.415,481 5,000.35,000.3 0.0275,000.3AL594.116,075 5,005.35,005.30.0405,005.3AM594.116,362 5,011.45,011.60.2275,011.4AN693.516,796 5,018.85,018.90.1585,018.8AO524.617,289 5,025.45,025.40.0565,025.4AP115.117,832 5,030.65,030.60.0145,030.6FEDERAL EMERGENCY MANAGEMENT AGENCYFLOODWAY DATAFeet above confluence with Bozeman Creek2Floodway topwidth includes width of high ground1MATHEW BIRD CREEKGALLATIN COUNTY, MTAND INCORPORATED AREAS 1$9' 1$9' 1$9' )((7 105TABLE 8 106
Drawing2.dwgFLOODPLAIN EXHIBIT
EXHIBIT "A"
FLOODPLAIN RESPONSE
705 S. CHURCH AVE.213596JOB NUMBER :
SHEET :
SCALE :AS NOTED
1 OF 1
DATE :03/28/2023
S18, T02 S, R06 E, C.O.S. 1790A, PARCEL A, ACRES 1.931
W E B : w w w . h y a l i t e e n g . c o m
2304 NORTH 7TH AVENUE STE. L B O Z E M A N , M T 5 9 7 1 8P H O N E : ( 4 0 6) 5 8 7 - 2 7 8 1 F A X : ( 4 0 6 ) 5 2 2 - 9 2 2 5
2304 N. 7TH AVENUE | SUITE L | BOZEMAN, MT 59715 | (406) 587-2781
June 20, 2025
City of Bozeman- Engineering Division
20 East Olive Street
Bozeman, Montana 59715
Attn: Lance Lehigh
Re: Floodplain Development Permit- Scour Calcs
705 S Church Ave, Bozeman, MT 59715
Bozeman, Gallatin County, MT
Dear Lance,
In regards to the scour calculations that were submitted, they utilized the 2 main published
equations that utilize stream & existing soils data to calculate the minimum scour depth for that
channel. The outlier here is the last (Blench) calculated a scour depth of 5.4’ deep, while the
other two were fairly consistent at 1.45’ & 1.38’ respectively. Regardless, the minimum 6.5’
depth of cover for the force line exceeds all of the calculations and therefore meets the required
depths.
Please let me know if you have any questions.
Sincerely,
____________________________
Brett Megaard, PE
Senior Project Manager
cc: Property Owner
File – 213596
705 S CHURCH AVE
FORCE LINE
Date: APRIL 17, 2025]
By: BRETT MEGAARD, PE
Project #: 213596
Lacey's Equation:
ds =Z[0.47(Q/f)1/3]
Where:
Z =Multiplying Factor Based on Bend Condition (Table 7, USBR Computing
Degradation and Local Scour)
Q =Design Dischrge (cfs)
f =Lacey's Silt Factor equals 1.76(Dm)1/2 where Dm equals mean grain size of
bed material in mm
Calculations:
Z =0.25 (Straight Reach)
Q =1040 cfs 100 yr = 1040 cfs (streamstats)
Dm =0.1 mm (Fine Sand)
f =0.557
ds = 1.447 ft
Neills Equation:
ds =Z [di (qf/qi)m]
Where:
di =Average depth at bankfull discharge in incised reach,ft
qf =Design flood discharge per unit width
qi =Bankfull discharge in incised reach per unit width
m =Exponent
Z =Multiplying Factor Based on Bend Condition (Table 7, USBR Computing
Degradation and Local Scour)
Calculations:
di =3 ft
qf =52.0 cfs ( 1040 cfs, 20 ft width)
qi =58.8 ( 1470 cfs bankful discharge, 25 ft width)
m =0.67 (Sand)
Z = 0.5 (Straight Reach)
ds =1.38 ft
Project Name
4/17/2025
Page 2 of 2
Blench Equation:
ds =Z [(qf)2/3] / [(Fbo)1/3]
Where:
qf = Design Flood discharge per unit width, cfs
Fbo =Blenches zero bed factor, cfs
Z = Multiplying Factor Based on Bend Condition (Table 7, USBR Computing
Degradation and Local Scour)
Calculations:
qf = 19.1 cfs ( 496 cfs, 26 ft width)
Fbo =0.5 (Figure 9, USBR Computing Degradation and Local Scour)
Z = 0.6 (Table 7, USBR Computing Degradation and Local Scour)
ds = 5.404 ft
2304 N. 7TH AVENUE | SUITE L | BOZEMAN, MT 59715 | (406) 587-2781
June 20, 2025
City of Bozeman- Engineering Division
20 East Olive Street
Bozeman, Montana 59715
Attn: Lance Lehigh
Re: Floodplain Development Permit
705 S Church Ave, Bozeman, MT 59715
Bozeman, Gallatin County, MT
Dear Lance,
Hyalite Engineers certifies that the responses and elements of this floodplain application have
been carefully designed to be in accordance with the Bozeman Municipal Code Chapter 38
Article 600. In regards to specifically 38.600.210.G, there is no construction or fill taking place
within the floodplain so therefore items 1-15 do not apply.
The existing ground contours as shown on the included plans is hereby certified with this
letter/signature/stamp. Also, the Conservation District was coordinated with, as was the Army
Corps of Engineers, and neither require a permit application in this instance, nor do any other
specialty permits.
The proposed scope of work on the project consists of a directionally drilled bore to serve the
temporary sewer force main connection to the existing sewer infrastructure located on the west
side of the creek. As part of this work, no waterway/floodway or floodplain will be touched or
excavated during the construction process.
Please let me know if you have any questions.
Sincerely,
____________________________
Brett Megaard, PE
Senior Project Manager
cc: Property Owner
File – 213596
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REVISIONSDATEPROJECT NUMBERHYALITE Engineers, PLLC161 W. Haley Springs RoadBozeman, MT 59715Tel: (406) 587.2781w w w . hyaliteeng. comFax: (406) 522.92252021705 SOUTH BOZEMAN, MT05.2.202521359622x34 ORIGINALS CHURCH AVENUESCALESHEET TITLEDESIGN BYSte. 101MONTANABRETT C.No. 29106 PEMEGAARDPEFORSOILNASREN
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ENE 705 S CHURCHLEGAL DESCRIPTIONBEING BOOK 156 OF FILMS, PAGE 4066, LOCATED IN PORTIONS OF THE SW 14 OF THE SE 14SECTION 7, TOWNSHIP 2 SOUTH, RANGE 6 EAST, P.M.M. CITY OF BOZEMAN, GALLATINCOUNTY, MONTANA.PROPOSED STORM PONDAPPROX. 1640 CF STORAGE(GRADE DITCH/PIPING TODRAIN TO LOCATION)EXISTING DELINEATEDFLOODPLAINEXISTING WATERWAYEXISTING FLOODPLAINEXISTING FLOODWAYFEMA FLOODPLAINCROSS SECTION AC(APPROX.BFE = 4842.1)STORMWATER DITCH OR 6 IN. DIA. PIPE TOCONVEY PARKING SURFACE RUNOFF ANDROOF DRAINAGE STORMWATER (SLOPE AT0.50% TO ENSURE ADEQUATE DRAINAGE)PRIMARY CONSTRUCTIONENTRANCE / EXIT WITHVEHICLE TRACKING PADT
CWO
DESIGNATED CONTRACTORPARKINGSOIL STOCKPILE AREAMATERIAL & EQUIPMENTSTORAGEEXISTING FLOW DIRECTIONPERIMETER CONTROLCONCRETE WASHOUTPORTABLE TOILETSTCWOSWPPP LEGEND1.EROSION AND SEDIMENT CONTROL PLAN IS A LIVINGDOCUMENT AND MAY BE UPDATED AND REVISED ASNEEDED.2.CONTRACTOR SHALL PHASE THE GRADING WORK TOMINIMIZE THE TIME SOILS ARE EXPOSED AND SHALLPLACE SEED, EROSION CONTROL BLANKET, MULCH, ORHYDRO-SEED AS SOON AS POSSIBLE AFTER COMPLETINGGRADING WORK.3.PERIMETER CONTROL BMPS SUCH AS SILT FENCE,NATIVE VEGETATIVE BUFFERS, FIBER ROLLS, STRAWWATTLES AND EARTHEN BERMS ARE INTERCHANGEABLEAND THE MOST FEASIBLE BMP SHOULD BE USED WHENNEEDED. ADDITIONAL BMP'S MAY BE NEEDED TOPREVENT EROSION AND SEDIMENTATION.4.INSTALL EROSION CONTROL BLANKET AT DOWNSTREAMENDS OF NEW OR DISTURBED CULVERTS, NEWLYGRADED DITCHES, AND WHERE SCOUR IS VISIBLE ONDISTURBED SOILS AS NEEDED.5.DISTURBED SOILS SHALL BE SURFACED ROUGHENED ASNEEDED. ORIENT THE SURFACE GROVES TO BEPARALLEL TO THE CONTOURS AND PERPENDICULAR TOTHE SURFACE FLOWS. BLEND THE EXISTING TOPSOILADJACENT TO THE SIDEWALK AND/OR CURB & GUTTERTO ELIMINATE ANY STEEP SLOPES OR VERTICAL EDGES.HYDRO-SEED AFTER SURFACE ROUGHENING.6.DISTURBED SOILS ARE TO BE WATERED AS NEEDED FORDUST CONTROL AND/OR SEED GERMINATION.7.TEMPORARY SOIL STOCK PILE AND STAGING AREAS MAYHAVE SILT FENCE, EARTHEN BERM OR FIBER ROLLSINSTALLED AROUND THE PERIMETER OF THE AREA.TEMPORARILY COVER EXCESS SOIL WHEN NOT WORKEDFOR MORE THAN 48 HOURS AS NEEDED. WHENSTOCKPILE AREA IS NO LONGER NEEDED, FINALIZE BYRE-GRADING AND COVERING THE AREA WITH MULCHAND WEED-FREE SEED MIX OR HYDRO-SEED.8.PROVIDE A STABILIZED VEHICLE ENTRANCE IF THERE ISCONTINUAL TRAFFIC IN AND OUT OF THE CONSTRUCTIONSITE. IF POSSIBLE, PARK VEHICLES IN DESIGNATEDPARKING AREAS, ON ROADS OR UNDISTURBED,VEGETATED AREAS. AVOID ENTERING A SITE WHEN IT ISMUDDY. IF THIS IS NOT POSSIBLE, CLEAN OFF VEHICLETIRES BEFORE LEAVING THE SITE.9.CONTRACTOR IS RESPONSIBLE FOR ONGOINGEVALUATION AND MAINTENANCE OF BMPS TO ENSUREPROPER FUNCTIONING AND ADEQUACY ASCONSTRUCTION PROGRESSES.10.INSPECTIONS OF ALL BMPS (INCLUDING VEGETATIVEBUFFERS) MUST BE CONDUCTED AT LEAST ONCE EVERY7 DAYS AND WITHIN 24 HOURS OF A QUARTER-INCHRAINFALL EVENT. INSPECTION RESULTS MUST BERECORDED. THE RESULTS MAY BE RECORDED IN ANYDIARY OR INSPECTION FORM USED AT THE SITE. THERECORD OF THE INSPECTION MUST INCLUDE THE DATEAND TIME OF THE INSPECTION, NAME OF PERSONCONDUCTING THE INSPECTION, FINDINGS ANDCORRECTIVE ACTIONS REQUIRED, CORRECTIVE ACTIONSTAKEN, AND DATE AND AMOUNT OF RAINFALL. GENERAL EROSION AND SEDIMENT CONTROL NOTESPERIMETER CONTROL(LIMIT OF DISTURBANCEFOR EAST SIDE OF CREEK)PROPERTY LINEEXISTING OVERHEAD POWEREXISTING 8" SEWER MAINPROPOSED 4" SDR 26 PVC SEWER SERVICEPROPOSED 1.5" DR 9 FORCE MAINEXISTING 6" CAST IRON WATER MAINEXISTING WATER SERVICE LINEPROPOSED 2" COPPER WATER SERVICEEXISTING SIDEWALKPROPOSED SIDEWALK/WALKWAYFINISHED GROUND ELEVATIONEXISTING HYDRANTEXISTING SANITARY SEWER MANHOLEEXISTING VALVEEXISTING POWER POLEMASTER LINE & SYMBOL LEGEND1000OHP8''S6''WWATSHYD2''WSEW2''FM