PRELIMINARY UTILITY REPORT FOR TOPGOLF INTERNATIONAL, INC.

Transcription

1 PRELIMINARY UTILITY REPORT FOR TOPGOLF INTERNATIONAL, INC. THORNTON, COLORADO Prepared for: ARCO Murray Contact: Rachel Bohac Phone: Prepared by: th Street, Suite 514 Denver, CO Contact: Eric Pearson Phone: JN: February 2018

2 This Utility Report for the design of Topgolf was prepared by me or under my direct supervision in accordance with the City of Thornton s Standards and Specifications and acceptable professional practices of the industry. e acknowledge that the City of Thornton s review of this study is only for general conformance with submittal requirements, current design criteria, and standard engineering principles and practices. Eric Pearson, PE. Registered Professional Engineer State of Colorado No For and on behalf of CAGE Civil Engineering

3 TABLE OF CONTENTS: Project Location and Description:... 1 ater System:... 2 Calculated ater Demands:... 2 Existing ater System:... 2 Proposed ater System:... 3 Proposed ater System Analysis and Modeling:... 3 astewater System:... 3 Calculated astewater Flows:... 3 Existing astewater System:... 3 Proposed astewater System:... 3 Proposed astewater System Analysis and Modeling:... 3 Potential Permitting Requirements:... 3 References:... 4 Appendix A: ater Demands and Hydraulic Analysis and Modeling Appendix B: astewater Demads and Hydraulic Analysis and Modeling Appendix C: Referenced Information Appendix D: Maps and Plans

4 Project Location and Description: The location of Topgolf is located in the City of Thornton, near the intersection of East 160th Avenue and ashington Street. The Site boundaries are shown on the Vicinity Map, Figure 1-1. The site is located in the Southeast Quarter of Section 3, Township 1 South, Range 68 est of the 6th Principal Meridian. Approximate geodetic coordinates for the site are: N, Figure 1-1 Vicinity Map At full build-out, the Site will contain 1 commercial outdoor driving range. The site infrastructure will not be phased. The Site (12.66 acres) is currently vacant and is zoned Regional Commercial. Proposed land use is commercial. Existing grades are gentle, varying from 1% to 3%, with a 33% slope at the est 160th Avenue RO. The Site is divided in its drainage, with roughly the south half draining to the south-east and the north half draining to the north-east. There are no major drainageways, irrigation canals, stock ponds, or detention facilities on the Site. As illustrated on Adams County Flood Insurance Rate Map (FIRM) 301

5 of 1150, Map Number 08007C0301J, dated January 20, 2016, the Site lies within Zone X (outside of the 0.2% annual flood chance floodplain), and is not located in a regulatory floodplain This Site has been studied previously under Larkridge apartments & 160 th Avenue and Greet Street Utility Report, revised in January 2018 by Matrix Design Group. This Previous Study calculated the Site under commercial assumptions, thus the water and sanitary demands that this Site proposes will comply with the previous report. See previous water and sanitary demands in Appendix C. ater System: Calculated ater Demands: City of Thornton requires that buildings with the use of Restaurant/Fast Food are to be provided 1,000 gallons per 1,000 square feet of building area per day. This requirement would require a supply of 64,000 gpd for this Site for water demand. Similar Topgolf facilities have been analyzed and require a demand of 10,000 gpd (see Topgolf Utility bills in Appendix C). e propose that the required demand for this analysis be reduced to 10,000 gpd. This demand of 10,000 gpd is less than what is provided in the Previous Report and there will be no negative effect on the water system. Fire flows for the development are 1,500 gallons per minute at a single location. Existing ater System: The Site lies entirely in a single pressure zone and has adequate pressure. ater pressure at the property has been calculated in the Previous Report and pressures inside the site have been calculated by elevation pressure loss method and are available in Appendix A. There are existing water mains on site and the Developer will provide water mains for this Site to connect to: - Existing water main dead end at Grant Street / East 162 nd Avenue Roundabout - Developer proposed water main in Grant Street (with Grant Street Construction) - Developer proposed water main through new roundabout and to north (with Grant Street Construction) - Developer proposed water main in proposed access drive to east of Site with dead end at south end of Site (with Grant Street Construction)

6 Proposed ater System: Site development proposes water main loop in front of the facility. This loop provides water service for 2 hydrants, domestic service and fire service, and will be properly valved to prevent water main failure in case of break. Proposed ater System Analysis and Modeling: ater modeling will be provided in the Final Utility Report. astewater System: Calculated astewater Flows: The Previous Report provides Basin D-1 (30.73 acres) with 18,438 gpd (600 gpd/acre) of sanitary demand. The Site is acres in size, and proposes to discharge 7,596 gpd with a peaking factor of 3.5, resulting in a max flow of 26,586 gpd or 18.5 gpm (0.31 cfs). The proposed 6 sanitary 1.0% will be adequately sized for this flow. See table in Appendix B for astewater Hydraulics. Existing astewater System: There is one (1) sanitary main, proposed by the developer, to the east of the Site in Grant Street. This main also provides a main stub into the roundabout to the west of Grant Street, which the Site will tie into. This main is tributary to Basin D-1 as shown in the Previous Report. Proposed astewater System: Site development proposes a 6 sanitary service to connect into the Developer proposed main stub in the roundabout to be constructed with Grant Street. Proposed astewater System Analysis and Modeling: Sanitary modeling is provided in Appendix B. Potential Permitting Requirements: No additional permits are anticipated.

7 References: 1. Larkridge apartments & 160 th Avenue and Greet Street Utility Report, revised January 2018, by Matrix Design Group 2. Section 200 ater System Standards. Standards and Specifications for the Design and Construction of Public and Private Improvements, City of Thornton, Section 300 Sanitary Sewer System Standards. Standards and Specifications for the Design and Construction of Public and Private Improvements, City of Thornton, 2012.

8 Appendix A: ater Demands and Hydraulic Analysis and Modeling

9 Elevation (ft.) Elevation Difference (ft.) Pressure Calculations Length of Pipe (ft.) Pipe Diamter (in.) Static Pressure (psi) Residual Pressure (psi) Location East Property Line* Pipe Reach End of Loop Pipe Reach est Hydrant *Pressues at East Property Line provided from Matrix Design Group on February 15, 2018 Constants: Pressure Drop (psi/ft elev): 0.433

10 Appendix B: astewater Flows and Hydraulic Modeling

11 Channel Report Hydraflow Express Extension for Autodesk AutoCAD Civil 3D by Autodesk, Inc. Thursday, Feb in. PVC Circular Diameter (ft) = 0.50 Invert Elev (ft) = 1.00 Slope (%) = 1.00 N-Value = Calculations Compute by: Q vs Depth No. Increments = 20 Highlighted Depth (ft) = 0.25 Q (cfs) = Area (sqft) = 0.10 Velocity (ft/s) = 3.38 etted Perim (ft) = 0.79 Crit Depth, Yc (ft) = 0.30 Top idth (ft) = 0.50 EGL (ft) = 0.43 Elev (ft) 2.00 Section

12 Depth Q Area Veloc p Yc (ft) (cfs) (sqft) (ft/s) (ft) (ft)

13 Appendix C: Referenced Information

14 LARKRIDGE APARTMENTS SANITARY SEER CALCULATIONS Design Point BASIN Total Residential Area (Ac.) Residential Units Density per unit Population Commercial Area (Ac.) Total Tributary Acreage Average Flow (gpd) Peaking Factor Peak Flow (MGD) Peak Flow Pipe Diameter Manning's Coefficient Pipe Slope Allowable % full Allowable Depth* Velocity** Full Flow rate** % of Allowable Flow (ac) (DU) (ac) (ac) (gpd) (MGD) (cfs) (in) (%) (in) (fps) (cfs) 1 A (Kaiser site) , % % B (south apartments) , % % 2 cumulative , % % C (north apartments) , % % 3 cumulative , % % D , % % D , % % 4 cumulative , % % Costco Area , % % 5 cumulative , % % Larkridge East , % % 6 cumulative , % % G , % % 7 Cumulative , % % *Residential density greater than 12 DU/ac

15 SITE

16 LARKRIDGE APARTMENTS ATER CALCULATIONS TABLE 4.1: LAND USE SUMMARY ITH ATER DEMANDS Residential Unit Demand (per units or Building resident or per Area* 1000 sf) Average Daily Demand Average Daily Demand Peak Hour Demand** Maximum Daily Demand*** Land Use Parcel Area GPD (gpm) (gpm) (gpm) ac Commercial Professional Center 27, , ac Commercial Shopping Center 45, , ac Commercial Shopping Center 31, , ac Residential High Density**** , ac Commercial Shopping Center 13, , ac Commercial Restaurant 23,000 1,000 23, ac Commercial Restaurant 30,000 1,000 30, ac Commercial Shopping Center 75, , ac Commercial Shopping Center 130, , ac Commercial Shopping Center 7, , *Assumes FAR of 0.15 unless likely user is already identified **Based on demand factor of 3.24 for commerical and 5.76 for residential ***Based on demand factor of 1.8 for commerical and 3.2 for residential ****Residential demand assumes 2.20 persons/unit for >12 D.U./acre

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18 The City of OKLAHOMA CITY UTILITIES DEPARTMENT OKLAHOMA CITY ATER UTILITIES TRUST Customer Name : Prem Address : Account # : Bill Type/Date: TOP GOLF USA, OKC LLC PANEE DR Periodic 12/07/15 Previous Balance : Payments Received: Balance In Payplan: Balance In Dispute: $3, $0.00 $0.00 $0.00 CURRENT CHARGES: $2, ADDITIONAL CHARGES/ADJUSTMENTS Late Payment Charge $59.81 AMOUNT DUE BY 12/22/15: $6, AMOUNT DUE AFTER DUE DATE: $6, Mandatory odd/even watering (Stage 1) is permanently in effect. This bill reflects a previous balance. If payment has been mailed, thank you. If not, please remit immediately. The City of OKLAHOMA CITY UTILITIES DEPARTMENT OKLAHOMA CITY ATER UTILITIES TRUST TOP GOLF USA, OKC LLC 8750 N CENTRAL EXPRESSAY SUITE 1200 DALLAS TX RESIDENTIAL ACCOUNT Amount Due On or Past Due Before 12/22/15 After 12/22/15 $6, $6, Amount Enclosed $ ROUND IT UP to give "HELP 2 OTHERS" with their city utility bill.round up your payment and check here ---> AADFTDAFDATTDDAFFTTAFTAFDFFFTAFDFFFADFAFDFAAAFFATFTTTDDDAAFADTAAF City of Oklahoma City P.O. Box Oklahoma City, OK Page 2 of fi

19 Appendix D: Maps and Plan

20 DEVELOPMENT PERMIT TOPGOLF PART OF TRACT D-1, LARKRIDGE SUBDIVISION FILING NO. 2 FIRST AMENDMENT LOCATED IN THE SOUTHEAST QUARTER SECTION 3, TONSHIP 1 SOUTH, RANGE 68 EST OF THE SIXTH PRINCIPAL MERIDIAN CITY OF THORNTON, COUNTY OF ADAMS, STATE OF COLORADO CASE NO: DP 2018-XXX EX. 75' XCEL ELECTRIC TRANSMISSION EASEMENT EX. XCEL OVERHEAD ELECTRIC TRANSMISSION LINES EX. XCEL ELECTRIC TRANSMISSION TOER OH OH OH OH OH X X X X X OH OH OH OH OH OH OH OH OH OH OH OH OH OH OH OH G FIRE HYDRANT OH OH OH OH OH OH OH OH OH OH OH OH OH G G X X X XX PROPOSED 20' UTILITY EASEMENT EX. PSCO ELECTRIC TRANSMISSION EASEMENT (VARIABLE IDTH) STORM SEER (TYP.) 6" SANITARY AND GREASE SERVICES T G 3" DOMESTIC ATER SERVICE 6" FIRE SERVICE G PROPOSED 30' UTILITY EASEMENT 8" ATER MAIN (BY DEVELOPER) STORM SEER (TYP.) FIRE HYDRANT T T T 6" SAN 1.0% MIN STORM SEER CONNECTION (PROVIDED BY DEVELOPER) G G G G T X X X X X GAS, TELECOM, AND ELECTRIC SERVICES EX. XCEL ELECTRIC AND CONDUITS TRANSMISSION TOER T SA EX. CURB INLETS 8" SANITARY MAIN (BY DEVELOPER) CONNECT TO EX. SANITARY (PROVIDED BY DEVELOPER) 8" ATER MAIN (BY DEVELOPER) SA FIRE HYDRANT (BY DEVELOPER) 8" ATER CONNECTIONS (PROVIDED BY DEVELOPER) STORM SEER CONNECTION (PROVIDED BY DEVELOPER) X X FIRE HYDRANT (BY DEVELOPER) CURB INLETS (BY DEVELOPER) 36" STORM SEER (BY DEVELOPER) X SA SA SA SA SA SA SA NOTES: 1. THIS SITE FALLS ITHIN CITY OF THORNTON PRESSURE ZONE 1, HICH HAS HIGH AND LO HGL OF 5,375 FT AND 5,351 FT, AND HIGH AND LO SERVICE ELEVATIONS OF 5,250 ST AND 5,104 FT, RESPECTIVELY. THE HIGH AND LO SERVICE PRESSURE FOR ZONE 1 IS 117 PSI AND 44 PSI RESPECTIVELY. THE PROPOSED HIGH AND LO GRADES ON SITE ARE 5,215 FT AND 5,210 FT, RESPECTIVELY. 2. A 6" SANITARY SERVICE IS PROVIDED FOR THE SITE. TOPGOLF INTERNATIONAL, INC. REVISIONS TOPGOLF THORNTON PROJ NO: ENG : KJS / EAP DATE : 02/23/2018 SHEET TITLE UTILITY PLAN 160TH AVENUE & I-25 THORNTON, ADAMS COUNTY, COLORADO 0 80' 1" = 80' (HORIZONTAL) 160' 4 SHEET NUMBER C4.0 OF 18