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HomeMy WebLinkAboutJb Saccoccia Minor Sub 407C - Water Extension Eng Report SACCOCCIA SUBSEQUENT MINOR SUB 407C WATER SYSTEM IMPROVEMENTS WATER MAIN EXTENSION BASIS OF DESIGN REPORT October, 2021 PREPARED BY: MMI #: 2927.012 2 Table of Contents 1.1.1 General Information .......................................................................................... 3 1.1.2 Extent of Water Works System, including: ......................................................... 4 1.1.3 Alternate Plans .................................................................................................. 4 1.1.4 Site Conditions .................................................................................................. 4 1.1.5 Water Use Data ................................................................................................ 5 1.1.6 Flow requirements ............................................................................................. 7 1.1.7 Sources of Water Supply ................................................................................... 8 1.1.8 Proposed Treatment Processes: ....................................................................... 8 1.1.9 Sewage System Available ................................................................................. 8 1.1.10 Waste Disposal ................................................................................................. 8 1.1.11 Automation……………………………………………………………………………..8 1.1.12 Project Sites……………………………………………………………………………8 1.1.13 Financing……………………………………………………………………………….8 1.1.14 Future Extensions ............................................................................................. 8 APPENDICES Appendix A Fire Flow Calculations Appendix B Vicinity Map Appendix C Saccoccia Minor Subdivision Basis of Design Report 2007 Appendix D HOME-2 Hotel – Overall Utility Plan Prepared by: Morrison-Maierle, Inc. 2880 Technology Blvd. W. Bozeman, Montana 59771 Phone: (406) 587-0721 Fax: (406) 922-6702 Written By: CMS Checked By: MEE Approved By: MEE PROJECT NO.: 2927.012 3 1.1 Engineer’s Report The following Design Report follows the section numbering of Circular DEQ-1 Standards for Water Works, 2018 Section 1.1, Engineer’s Report. 1.1.1 General Information a. Saccoccia Subsequent Minor Sub 407C is comprised of Lots 2A1 and 2A2. The Home-2 Hotel has site plan approval on Lot 2A1 and a water design report was submitted to the City of Bozeman with that application (COB Application #19394). b. This design report provides the criteria used as a basis of design for the water to service the proposed future Hotel on Lot 2A2. This report is submitted in conjunction with the completed plans and specifications and is organized following the outline recommended in DEQ-2, Chapter 10, Section 11.1, Engineering Reports. The proposed Hotel facility is located off Baxter Lane on proposed Lot 2A2 of the Saccoccia Subsequent Minor Subdivision 407C. This project is located within the City of Bozeman, Montana. See Appendix B the vicinity map for location details. This project involves extending approximately 843-feet of 8” looped main in to the development. The main will tie in to the existing 8” main installed with the Rocky Mountain Credit Union site plan to the west side of the property and loop across Lot 2A2 and Lot 2A1 and then tie into an existing 10” water main located to the south of the site (see HOME-2 Hotel – Overall Utility Plan in Appendix D for details). The proposed Hotel facility on Lot 2A2 will get fire and domestic service off this main. c. The proposed water main infrastructure will be served by the City of Bozeman. d. Project Developer: Saccoccia Lands II, LLC 1234 Springhill Road 4 Belgrade, MT 59714 e. System Owner: City of Bozeman PO Box 1230 Bozeman, Mt 59715 Public Water System (PWSID# MT0000161) 1.1.2 Extent of Water Works System, including: a. The proposed water main extension is an extension of the City of Bozeman water infrastructure in the area. The water main extension is proposed serve the proposed hotel with fire and domestic water services. This property is zoned B2, (Community Business District) per the City of Bozeman’s zoning map. b. The subdivision will extend approximately 843-feet of new 8-inch Class 51 D.I.P. water main into / across the proposed site (see Appendix D for details). The new 8-inch main will connect to a 8” main that was installed with the Rocky Mountain Credit Union site plan on the western edge of the property. This proposed main will provide fire protection and domestic service to the proposed hotel project. This main will tie into an existing 10-inch water main stub that was extended into the property with the LOWE’s PUD project. c. The proposed 8-inch water main extension will provide fire protection to the proposed hotel project. 1.1.3 Alternate Plans The alignment of the proposed main was chosen to meet the layout of the proposed hotel project. 1.1.4 Site Conditions a. The proposed site has existing grades of less than 4% and the soils and has Saypo silt loam and Enbar loam soil deposits (USDA Soil Survey). 5 b. A site specific geotechnical report will be done for the hotel building foundation construction. c. The ground water flows generally from the south to the north based on general groundwater flow in the valley. The groundwater depth at this site is likely seasonally varied. 1.1.5 Water Use Data The water distribution system serving the proposed project will be designed and installed in accordance with the Montana Department of Environmental Quality (MDEQ) Circular No. 1; Montana Public Works Standard Specifications (MPWSS); the City of Bozeman Modifications to MPWSS; City of Bozeman Water Facility Plan; and the City of Bozeman Design Standards and Specifications Policy. The following section addresses the design capacity and flow requirements discussed in Section 8 of DEQ - 1. Domestic water demand for the proposed development will be based on the 98 units proposed for the future Hotel and irrigation for landscaping. As provided in Design and Construction of Small Water Systems: A Guide for Managers (American Water Works Association, 1984) and Planning for an Individual Water System (American Association for Vocational Instructional Materials, 1982), a hotel has an estimated daily demand of 50 gallons per day (gpd) per private baths, assuming two persons per room. Additionally, irrigation requirements are estimated by the landscape architect and are shown below. Peaking factors used for design purposes are 2.3 for the Maximum Day Demand, and 3.0 for the Peak Hour Demand as suggested in the City of Bozeman’s Design Standards and Specifications Policy March 2004 – Section V. Utility Design Criteria, sub-section A, Water Distribution Lines Design Criteria, Paragraph 4, page 48. Based on these criteria the demands predicted for the project are: Average Day Demand Hotel: 98 rooms x 50gpd / room = 4,900 gpd or 3.40gpm Irrigation: The following calculations are from the HOME-2 Hotel Site Plan. The assumption is the proposed Hotel on Lot 2A2 will be similar: 6 Trees (43 total 13 in planting beds others covered by lawn irrigation): 13 @ 10 Gallons per Month = 520 Shrubs: 311 @ 4 Gallons per Month = 4,976 Ornamental Grass: 233 @ 2 Gallons per Month = 1,864 Perennials: 500 @ 2 Gallons per Month = 4,000 Ground Cover: 1967 @ 1 Gallon per Month = 7,868 Turf Grass & Dryland Areas: 58,800 SF (based on zone gpm 20 min 3 times per week) Demand: 78,028 gallons per month = 2,517gpd or 1.75gpm Maximum Day Demand 2.3 x Average Day Demand = 2.3 x 7,417gpd = 17,059gpd or 11.85gpm HOME-2 Hotel – Maximum Day Demand = 12.2gpm (COB Application #19394). Total Maximum Day Demand = 11.85gpm + 12.2gpm = 24.05gpm Peak Hour Demand 3.0 x Average Day Demand = 3.0 x 7,417gpd = 22,251gpd or 15.45gpm Fire Flow The total water demand for the system includes the Maximum Daily Demand and the maximum required fire flow of 1,500gpm which based on the +/- 60K SF square foot building of Type V-A Construction. Table B105.1(2) of Appendix B of the International Fire Code requires 5,500gpm fire flow for a building without sprinklers and allows a reduction for buildings with fire sprinklers. The reduced flow is 25% of the listed flow which is 1,375gpm. The minimum flow is 1,000gpm or 1,500gpm dependent on if the fire sprinkler system is designed to meet NFPA 13 or NFPA 13R requirements. For this report we have conservatively assumed that 1,500gpm will be required. The Maximum Daily Demand is calculated by multiplying the Average Daily Demand by a peaking factor of 2.3 as described above.  Fire Flow Demand 11.85gpm (proposed Hotel on Lot 2A2) + 12.2gpm (HOME-2) + 1,500 gpm = 1,524.05gpm 7 1.1.6 Flow requirements The controlling hydraulic condition for the project is the max day flow plus the fire flow. As presented above the flow requirement is 1,524.05gpm at a residual pressure of 20 psi. Figure 6-8 in the 2017 Water Facility Plan Update for the City of Bozeman depicts the project area having an available fire flow of over 5000gpm at a residual pressure of 20 psi. The 2017 Water Facility Plan also includes data from fire flow tests. The nearest test was on Sacco Drive approximately 320 feet south of the project. This test included flowing 2 hydrants that were connected to the 12” main in Sacco Drive and recording residual pressures at a fire hydrant located between the 2 flowing hydrants. The fire hydrant nearest the project flowed 1,235gpm and the other hydrant flowed 1,215gpm for a total of 2,450gpm. Static pressure was 81.9 psi and the residual pressure was 62.8 psi. A copy of these test results is included in the Appendix. Hydraulic calculations are provided in the Appendix that show the 8” pipe main to the service tee will have a headloss of 5.57psi and the 6” service to the building will have a headloss of 3.22psi totaling a headloss of 8.79psi. Based on the nearby junction in the system having the capacity of over 5000gpm at a residual pressure of 20 psi and the field data from hydrants located on 12” mains from a nearby location flowing over the design flow there is adequate evidence that that the design flow of 1,500gpm can be met for the proposed fire hydrant and the design flow of 1,524.05gpm can be met for the project. Additionally, the water design report for the subdivision and main extension, Saccoccia Minor Subdivision Basis of Design Report (January 2007) has been provided in Appendix C. This report indicates that 10-inch stubs had been provided to Lots 1 and 2 as a conservative estimate for the development since the demand for the proposed lots was unknown at the time of the subdivision design. The report indicates that the necessary water main extensions would be determined at a later date once the site plans are developed. Given this information, it appears that a 10-inch main is not required solely based on the preinstalled 10-inch stubs and a 8 inch main would be adequate. 8 1.1.7 Sources of Water Supply Water is supplied from City of Bozeman. 1.1.8 Proposed Treatment Processes: Non-applicable. 1.1.9 Sewage System Available The area is served by the City of Bozeman wastewater treatment facility 1.1.10 Waste Disposal Non-applicable. 1.1.11 Automation Non-applicable. 1.1.12 Project Sites a. The project site has been zoned B-2 by the City of Bozeman. b. The existing site is bound by Baxter Ln to the north, Sacco Drive to the east and access drives to the west and south. c. The wastewater at the site will be conveyed to the City of Bozeman wastewater treatment facility. 1.1.13 Financing Non-applicable. 1.1.14 Future Extensions No future extension will be needed. Appendix A Project Description Friction Method Hazen-Williams Formula Solve For Pressure at 1 Input Data Pressure 2 0.00 psi Elevation 1 4730.41 ft Elevation 2 4733.15 ft Length 257.46 ft Roughness Coefficient 130.000 Diameter 8.00 in Discharge 1512.00 gal/min Results Pressure 1 5.57 psi Headloss 10.12 ft Energy Grade 1 4744.71 ft Energy Grade 2 4734.60 ft Hydraulic Grade 1 4743.27 ft Hydraulic Grade 2 4733.15 ft Flow Area 0.35 ft² Wetted Perimeter 2.09 ft Velocity 9.65 ft/s Velocity Head 1.45 ft Friction Slope 0.03929 ft/ft Water Pressure Pipe 8in Service 11/22/2019 10:43:07 AM Bentley Systems, Inc. Haestad Methods Solution CenterBentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 1of1Page Project Description Friction Method Hazen-Williams Formula Solve For Pressure at 1 Input Data Pressure 2 0.00 psi Elevation 1 4732.00 ft Elevation 2 4730.41 ft Length 56.47 ft Roughness Coefficient 130.000 Diameter 6.00 in Discharge 1512.00 gal/min Results Pressure 1 3.22 psi Headloss 9.01 ft Energy Grade 1 4743.99 ft Energy Grade 2 4734.98 ft Hydraulic Grade 1 4739.42 ft Hydraulic Grade 2 4730.41 ft Flow Area 0.20 ft² Wetted Perimeter 1.57 ft Velocity 17.16 ft/s Velocity Head 4.57 ft Friction Slope 0.15952 ft/ft Water Pressure Pipe 6in Service 11/22/2019 10:41:58 AM Bentley Systems, Inc. Haestad Methods Solution CenterBentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 1of1Page Bozeman Water DistributionSystem Model CalibrationField Test Data Sheet Test Number: __________ Test Date: ______________ Start Time: ___________ End Time: ___________ Test By: _________ Zone: ___________________ 3 2064 2058 2063RESIDUAL HYDRANT Hydrant No. ______ HPR No. ________ Static: __________ Residual: ________ FLOW HYDRANT #1 Hydrant No. ______ HPR No. ________ Flow: ______________ FLOW HYDRANT #2 Hydrant No. ______ HPR No. ________ Flow: ______________ 3GFGFGFGFGFGFGFGFGFGFGFGFGFGFGFGFGF GFG!! G!! G!!2064 (1760)(1840) (1976) (1880) (1750) (1731) (1805) (1640) (1540) (1620)(1600) 20632058 12" DI 10" DI 8" DI 12" DI 12" DI12" DI10" DI 12" DI10" DI8" DI12" DI 10" DI 10" DI8" DI 12" DI12" DI10" DI12" DI12" DI 12" DI10" DI BAXTER LN SACCO DRTSCHACHE LN G!!Flow Hydrants GFOther HydrantsG!!Test Hydrants 9/28/2015 11:14 AM 11:25 AM JDH 1240 81.9 psi 62.8 psi 1241 1,235 gpm 1,215 gpm 201250 NORTHWEST Appendix B N 11THSAVE7THNAVE19THNAVE27THNAVE15THNAVEINTERSTATE 90 191HUFFINELN W LINCOLN ST W GARFIELD ST W COLLEGE ST W BABCOCK ST MAIN STW COTTONWOODRDSCHURCHAVE235 191 SWILLSONAVEBAXTER LN F R O N T A G E R D 7THAVENOAK STW 27THAVENDURSTON RDDAVISLN INTERSTATE 90 PROJECT LOCATIONHARPER-RDPUCKETTSPRINGHILLRDV A L L E Y R D C E N T E R E NAVEFERGUSONengineerssurveyorsplannersscientists 2880 Technology Boulevard West Bozeman, MT 59718 Phone: (406) 587-0721 Fax: (406) 922-6702 VICINITY MAP SCALE:1" = 3000' Appendix C Appendix D PROPOSED HOTEL103 UNITS103 PARKING STALLSSDSDSDSDSDSDSDSDSD SDSDSDSDSDSDSDSD SD SDSD WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWFIRE FIREFIREWSWSGGGGGGFIREHYD SDSDSDSDSSSSSSSSSSSDLOT 2ACORRECT AMENDEDPLAT NO. 407C25.00' FIXEDCOMMON OPENSPACETVCO TDDPBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBF BFBFW EX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFGWVDYHWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSEX SSW W PROPERTYBOUNDARY40.00' WIDE PUBLICACCESS AND UTILITYEASEMENTNEW 8" DIP WATER MAINNEW 8" 90° BEND W/THRUST BLOCKEXISTING 10-INCHCLASS 51 DIP AWWAC151 WATER MAIN(TYP)CONNECT TO EXISTING10" WATER LINE STUBUSING 10" X 8" REDUCERCONTRACTOR TOVERIFY EXISTING PIPE SIZE30.00'PUENEW 4" WATERSERVICENEW 6" FIRESERVICENEW 8" SEWERSERVICE,INV: 4727.00CONNECT TO EXISTINGSEWER STUB, CONTRACTOR TOVERIFY SIZE AND INVERT TOENSURE ADEQUATE COVER ANDSLOPENEW FIRE HYDRANTAND VALVE ASSEMBLYPROPOSEDTRANSFORMERSEE ELECTRICALPROPOSEDBURIED POWERTELEPHONE AND GASCONTRACTOR TO VERIFYLOCATION OF EXISTINGBURIED POWERTELEPHONE AND GAS FORCONNECTION25.00' WIDE BUILDING &PARKING SETBACK5.00' WIDEBUILDING SETBACK8.00' WIDEPARKING SETBACK5.00' WIDEBUILDING SETBACK8.00' WIDEPARKING SETBACK10.00' WIDE BUILDING &PARKING SETBACK8.00' WIDEPARKING SETBACK5.00' WIDEBUILDING SETBACK80 LF OF 8" PVCSEWER SERVICE10.00' WIDE NWEEASEMENT30.00'PUES85°50'42"E 398.33'S85°50'42"E 398.05'N87°02'06"W 796.17'S2°57'21"W 377.59'N87°00'45"W 397.99'S2°56'25"W 162.68'30.00' STORMWATEREASEMENTCONNECT TO EXISTING8" WATER LINE STUBCONTRACTOR TOVERIFY PIPE SIZENEW 8" 90° BEND W/THRUST BLOCK4"x3" REDUCERBEFORE ENTERINGBUILDING9' 4" LAY LENGTHFOR 3" DOMESTICSERVICEVERIFY SCALE!THESE PRINTS MAY BE REDUCED.LINE BELOW MEASURES ONE INCHON ORIGINAL DRAWING. MODIFY SCALE ACCORDINGLY!2020COPYRIGHT © MORRISON -MAIERLE , INC .,SHEET NUMBERPROJECT NUMBERDRAWING NUMBERDATEDESCRIPTIONNO.BYN:\2605\028 - HOME 2\ACAD\SHEETS\2605028-C400-OVERALL-UTILITY-PLAN.DWG PLOTTED BY:CELINE SAUCIER ON Feb/19/2020REVISIONSDRAWN BY:DSGN. BY:APPR. BY:DATE:Q.C. REVIEWDATE:BY:2880 Technology Boulevard WestBozeman, MT 59718406.587.0721www.m-m.netengineers surveyors planners scientistsMorrisonMaierleHOME 2 - HOTEL 2605.028MONTANAOVERALL UTILITY PLANC400CMS MEE MEE2/21/2020TEE6/24/20191REVISION 1 - C.O.B. DRC REVIEW -11/8/1911/8/2019CMS3REVISION 3 - DRB REVIEW - 2/21/202/21/2020CMS2REVISION 2 - CITY COMMENTS - 1/21/201/21/2020CMSBOZEMANKnow what'sbelow.before you dig.CallR11x17 HORIZONTAL SCALE: 1" = 40'GRAPHIC SCALE0(IN FEET)102010201 INCH = 20 FTTHIS SITE HAS BEEN DESIGNED TO BE ACCESSIBLE TOINDIVIDUALS WITH DISABILITIES IN ACCORDANCE WITHTHE AMERICANS WITH DISABILITIES ACT.1.ALL IMPROVEMENTS ON THIS PROJECT SHALL BE COMPLETED IN ACCORDANCE WITH THEMONTANA PUBLIC WORKS STANDARD SPECIFICATIONS, 6TH EDITION DATED APRIL 2010(MPWSS); THE CITY OF BOZEMAN MODIFICATIONS TO THE MPWSS; AND THE PROJECTSPECIFICATIONS.2.THE CONTRACTOR SHALL RESTORE ALL ROADWAY SURFACES TO EQUAL OR BETTERCONDITION THAN EXISTED PRIOR TO EXCAVATION AS DETERMINED BY AGENCY, OWNER,AND/OR ENGINEER.3.ASPHALT, CONCRETE CURB, AND SIDEWALK SHALL BE SAW CUT OR NEAT CUT ASAPPROVED BY AGENCY AND/OR ENGINEER.4.ALL TEXT AND FEATURES SHOWN SHADED ARE EXISTING. SEE SHEET C100 FOR MORECOMPLETE DEPICTION OF EXISTING IMPROVEMENTS.5.THE LOCATION, DEPTH, AND SIZE OF THE EXISTING UTILITIES SHOWN ON THESE PLANS ISAPPROXIMATE. THE CONTRACTOR SHALL VERIFY THE EXISTENCE, LOCATION, DEPTH, ANDSIZE OF THE UTILITIES PRIOR TO CONSTRUCTION. THE CONTRACTOR SHALL BE SOLELYRESPONSIBLE FOR ANY DAMAGE TO THE EXISTING FACILITIES DUE TO FAILURE TO LOCATEOR PROPERLY PROVIDE PROTECTION WHEN LOCATION IS KNOWN.6.ALL WATER VALVES OWNED AND OPERATED BY THE CITY OF BOZEMAN SHALL BE OPERATEDBY AUTHORIZED CITY OF BOZEMAN PERSONNEL ONLY.7.SEWER AND WATER CONNECTIONS SHALL BE PERFORMED BY A LICENSED PLUMBER.8.GENERAL CONTRACTOR TO COORDINATE DRY UTILITY AND IRRIGATION REQUIREMENTS.GENERAL NOTES:E. BAXTER LANESACCO DRIVE DEVELOPMENT REVIEW RESUBMITTAL 2.21.202033333