HomeMy WebLinkAbout019 - Appendix Q - Exempt Well Letter DNRC
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December 21, 2022
Kerri Strasheim
DNRC – Bozeman Water Resources Regional Office
2273 Boothill Court, Suite 110
Bozeman, MT 59715
RE: Exempt Well Determination for South Range Crossing Subdivision
Dear Kerri:
I am requesting approval for 4 wells sharing 1 exempt well water right for the South Range Crossing
Subdivision located the SE corner of South 19th Avenue and West Graf Street.
Being Lot 1 of Block 2 of Yellowstone Theological Institute Minor Subdivision No. 494, located in the NW ¼
and SW ¼ of Section 24, T2S, City of Bozeman, P.M. Gallatin County, Montana.
Irrigation Water Demands
The sum of the landscaped areas is 6.63 acres. The annual volume of water required to irrigate this acreage
is based on the following assumed irrigation demands:
Sod with H.E. Rotary spray Irrigation: 1,147,778 gallons/year
Native Seed with H.E. Rotary spray irrigation: 841,323 gallons/year
251 Trees with H.E. bubblers: 74,547 gallons/year
Total Use: 2,063,648 gallons/year = 6.33 acre feet per year
*** The Well / Irrigation system will be zoned to ensure that demand will not exceed 35 GPM or 10-acre ft
per year.
Please find included for your review the well exhibit that will be submitted to the City of Bozeman Planning
Department.
If you have any questions or comments about this project, please feel free to contact me at 406-587-4873.
Sincerely,
Troy Scherer, PLA, ASLA
Design 5 Landscape Architecture
111 North Tracy Avenue
Bozeman, MT 59715
troy@design5la.com
O 406-587-4873
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GRAF STREETSOUTH 15TH AVENUEALDER CREEK DRIVECANTER AVENUE BROOKDALE DRIVEGRAF STREETSTREET A
STREET BPARK 1PARK 2PARK 3OS 1OS 2OS 4OS 11OS 10OS 12OS 6OS 7OS 8OS 9OS 7OS 13OS 13OS 5OS 3OS 14PARK 4PHASE 1PHASE 3
PHASE 2PHASE 1PHASE 4PHASE 3PHASE 3PHASE 5PHASE 2
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BLOCK 6LOT 2BLOCK 8LOT 2BLOCK 8LOT 3BLOCK 7LOTS 1-35BLOCK 3LOTS 1-18BLOCK 4LOT 1BLOCK 5LOT 2BLOCK 5LOT 4BLOCK 6LOT 1BLOCK 5LOT 3BLOCK 2LOT 42&43BLOCK 2LOTS 1-41IRRIGATIONTYPEIRRIGATION SCHEDULE - WELL #1 (PARK)TOTALAREA / QTYANNUALET RATETOTALANNUAL H2O42,210 SF29 IN / SF762,608 GALH.E.SPRAY IRRIG.
SOD
44,833 SF6 IN / SF167,586 GALH.E.SPRAY IRRIG.
SEEDH.E. TREEBUBBLER68 TREES16.5 GAL /WEEK20,196 GALH.E. SHRUBDRIP IRRIG.0 SHRUBS7.5 GAL /WEEK0 GALTOTAL ANNUAL H2O REQUIRED: 950,390 GALTOTAL ACRE FEET PER YEAR: 2.92 ACRE FEETIRRIGATIONTYPEIRRIGATION SCHEDULE - WELL #2 (PARK)TOTALAREA / QTYANNUALET RATETOTALANNUAL H2O13,088 SF29 IN / SF236,461 GALH.E.SPRAY IRRIG.
SOD
35,247 SF6 IN / SF131,753 GALH.E.SPRAY IRRIG.
SEEDH.E. TREEBUBBLER69 TREES16.5 GAL /WEEK20,493 GALH.E. SHRUBDRIP IRRIG.0 SHRUBS7.5 GAL /WEEK0 GALTOTAL ANNUAL H2O REQUIRED: 388,707 GALTOTAL ACRE FEET PER YEAR: 1.19 ACRE FEETIRRIGATIONTYPEIRRIGATION SCHEDULE - WELL #3 (OPEN SPACE)TOTALAREA / QTYANNUALET RATETOTALANNUAL H2O79,097 SF6 IN / SF295,665 GALH.E.SPRAY IRRIG.
SEEDH.E. TREEBUBBLER55 TREES16.5 GAL /WEEK16,335 GALTOTAL ANNUAL H2O REQUIRED: 460,709 GALTOTAL ACRE FEET PER YEAR: 1.41 ACRE FEETH.E. SHRUBDRIP IRRIG.0 SHRUBS7.5 GAL /WEEK0 GAL8,231 SF29 IN / SF148,709 GALH.E.SPRAY IRRIG.
SOD SYMBOLSIZEDESCRIPTIONIRRIGATION LEGEND*BACKFLOW PREVENTER1"BFCONNECTION POINTCPIRRIGATION SLEEVE, 4" MIN. SCH 40 PVC*NOTES:-LAYOUT TO BE DETERMINED IN FIELDBY IRRIGATION CONTRACTOR.-WELLS TO BE INSTALLED 100' FROMSANITARY SEWER LINES-ALL IRRIGATION CONTROLLERS NEEDTO BE "WEATHERMATIC" SL SERIESUNLESS OTHERWISE APPROVED BYTHE CITY'S PARKS OPS SUPT. VERIFYMODEL AND TYPE WITH BOZEMANPARKS AND RECREATIONSEEPLANN/AWELLN/AWIRRIGATIONTYPETOTAL WELL IRRIGATION SCHEDULETOTALAREA / QTYANNUALET RATETOTALANNUAL H2O63,529 SFTOTAL29 IN / SF1,147,778GALTOTALH.E.SPRAYIRRIG. SOD225,073 SFTOTAL6 IN / SF841,323 GALTOTALH.E.SPRAYIRRIG. SEEDH.E. TREEBUBBLER251 TREESTOTAL16.5 GAL /WEEK74,547 GALTOTALH.E. SHRUBDRIP IRRIG.0 SHRUBSTOTAL7.5 GAL /WEEK0 GALTOTALTOTAL ANNUAL H2O REQUIRED: 2,063,648 GALTOTAL ACRE FEET PER YEAR: 6.33 ACRE FEETIRRIGATIONTYPEIRRIGATION SCHEDULE - WELL #4 (OPEN SPACE)TOTALAREA / QTYANNUALET RATETOTALANNUAL H2O65,896 SF6 IN / SF246,319 GALH.E.SPRAY IRRIG.
SEEDH.E. TREEBUBBLER59 TREES16.5 GAL /WEEK17,523 GALTOTAL ANNUAL H2O REQUIRED: 263,842 GALTOTAL ACRE FEET PER YEAR: 0.81 ACRE FEETH.E. SHRUBDRIP IRRIG.0 SHRUBS7.5 GAL /WEEK0 GALCONCEPTUAL IRRIGATION NOTES:1.ALL SECTIONS OF MAINLINE CROSSING UNDER CONCRETE, ROADS, OR OTHER LARGE HARDSCAPE SURFACES TO BE IN SCH. 40 PVC SLEEVES.1.1.SLEEVES TO BE DOUBLE THE DIAMETER OF PROPOSED MAINLINE.1.2.LATERAL LINE SLEEVES TO BE SCH. 40 PVC AT LEAST DOUBLE THE DIAMETER OF THE LATERAL LINE SIZE PROPOSED.2.ALL SYSTEMS TO BE ON A LOOPED MAINLINE WHERE POSSIBLE, REFER TO CONCEPTUAL IRRIGATION MAINLINE LAYOUT.3.ALL SYSTEMS WILL BE 2 WIRE DECODER TYPE SYSTEMS.4.ALL INFORMATION SHOWN ON CONCEPTUAL DRAWINGS TO BE VERIFIED BY IRRIGATION DESIGNER, AND CONTRACTOR. COORDINATION WITH GENERALCONTRACTOR IS NECESSARY BEFORE CONSTRUCTION BEGINS TO ENSURE PROPER LOCATION OF SLEEVES, ELECTRICAL CONNECTIONS, AND WATER SOURCECONNECTIONS.5.ALL IRRIGATION COMPONENTS TO BE HIGH EFFICIENCY, HEADS, NOZZLES, DRIP, VALVES, AND FITTINGS.GENERAL IRRIGATION NOTES AND SPECIFICATIONS1.THESE PLANS PROVIDE GENERAL ANTICIPATED WATER DEMAND AND TYPE OF IRRIGATION FOR THE SUBDIVISION PARKS, WHICH ARE IRRIGATED BY (2) WELLS. THESUBDIVISION OPEN SPACES AND DETENTION PONDS ARE IRRIGATION BY (2) WELLS. THE WELLS WILL NOT BE CONNECTED IN ANY WAY.2.ALL VALVE BOXES TO BE STANDARD SIZE OR LARGER3.IRRIGATION MAIN LINE TO BE SCH. 40 PVC SOLVENT WELDED PVC IN CONTINUOUS LOOP, SIZE OF LINE DEPENDENT ON WATER DEMAND AS DETERMINED BYLANDSCAPE CONTRACTOR. LATERAL LINES TO BE 1" SCH 40 SOLVENT WELDED PVC OR 1" HDPE PIPE; DEPENDENT ON PRESSURES AND GALLONS PER MINUTE ATDISCRETION OF LANDSCAPE CONTRACTOR BASED ON PROFESSIONAL EXPERIENCE AND OPINION UPON DESIGN AND INSTALLATION OF THE SYSTEM.4.ALL TREES TO BE IRRIGATED THROUGH DEDICATED BUBBLERS EVENLY DISTRIBUTED AROUND BASE OF TREE WITH FOUR (4) EVENLY SPACED 1 GPH BUBBLEREMITTERS.5.TREES AND SHRUBS PLACED WITHIN PLANTING BEDS MAY UTILIZE DRIP IRRIGATION ADJUSTED PER INDIVIDUAL PLANT REQUIREMENTS.6.ALL SHRUBS OUTSIDE OF DEDICATED PLANTING BEDS TO HAVE DEDICATED BUBBLERS EVENLY DISTRIBUTED AROUND BASE, WITH TWO (2) EVENLY SPACED 1 GPHEMITTER.7.BUBBLERS TO TREES MAY BE OMITTED WHERE OVERHEAD IRRIGATION WILL PROVIDE ADEQUATE WATER.8.ALL MIXED SHRUB AND PERENNIAL PLANTINGS TO BE IRRIGATED WITH DEDICATED DRIP TUBING W/ EMITTERS ADJUSTED PER INDIVIDUAL PLANT REQUIREMENTS.9.LAWN AND SEED AREAS TO BE IRRIGATED WITH SPRAY OR ROTOR OVERHEAD IRRIGATION AS INDICATED PER PLAN.9.1.ALL SPRAY OR ROTOR OVERHEAD IRRIGATION HEADS WILL BE INSTALLED AND ADJUSTED PROPERLY TO MINIMIZE WATER OVER THROW ONTO PAVEMENT.9.2.ALL SPRAY OR ROTOR OVERHEAD IRRIGATION TO UTILIZE WATER EFFICIENT NOZZLES (MULTI-SPRAY, MULTI-TRAJECTORY, OR ROTATING SPRAY).10.ALL HEADS MUST ACHIEVE HEAD-TO-HEAD COVERAGE FOR SOD AREAS.11.SYSTEM SHALL UTILIZE WEATHER / MOISTURE MONITOR.12.BACKFLOW ASSEMBLY AND BLOWOUT ASSEMBLY SHALL BE LOCATED IN APPROVED EXTERNAL GRADEBOX, AND IS THE RESPONSIBILITY OF THE LANDSCAPECONTRACTOR TO COORDINATE INSTALLATION PER LOCAL CODES AND ORDINANCES, WITH ARCHITECTURE AND WITH ALL OTHER TRADES.13.POWER SOURCE FOR IRRIGATION CONTROLLER TO BE COORDINATED WITH ELECTRICAL ENGINEERING AND ELECTRICAL CONTRACTOR BY LANDSCAPECONTRACTOR.14.DO NOT INSTALL IRRIGATION SYSTEM WHEN OBVIOUS OBSTRUCTIONS OR GRADE CHANGES ARE PRESENT.15.ALL INFORMATION TO BE FIELD VERIFIED BY CONTRACTOR PRIOR TO INSTALLATION.16.THE CONTRACTOR SHALL MAINTAIN AN ACCURATE & CURRENT 'AS-BUILT' IRRIGATION PLAN ON SITE AT ALL TIMES.17.ALL SPRAY AND ROTOR HEADS WITHIN SOD LAWN AREAS TO PROVIDE A PRECIPITATION RATE OF 0.4-0.8"/sqft.80400160N1L6001"=80'-0"Overall Irrigation Water Use Estimate - Exempt WellOverall IrrigationWater UseEstimate -Exempt WellL 600design5la.com406.587.4873dateissuedrawn by:checked by:filename:z:\south range crossing\autocad\01_sheets\blvds + os sheets\l600_south40-blvds+os_irrigation.dwg
South Range Crossing
Boulevards & Open Space
Bozeman, Montana
KHM/HU TMS
12/21/22Prelim Plat