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05/10/2022 - PacketUtilities Committee Meeting Agenda May 10, 2022, 5:00 p.m. Pursuant to the Governor's "Stay Home - Stay Safe" Order, the City is prohibited from conducting meetings unless the meeting is NOT conducted in person and instead provides options for the public to attend through telephone access, internet or other means of remote access, and also provides the ability for persons attending the meeting (not in person) to hear each other at the same time. Therefore; Remote access only Link: https://us02web.zoom.us/j/82559401512 Meeting ID: 825 5940 1512 • DWSRF Well #11 Design —Update o Preliminary Engineering Report httns://msaeD.shareDoint.com/:b:/s/EFS/EciXUuD tnZJFaAZays7rsUcB31 FugR9MW5y1S-gToE33CQ?e=oOJFaE o Next Steps • Foster Pilot Project — Update o Stream Augmentation Report - DRAFT o Tribal Relations o Next Steps • Splash Pad Retrofit — Update o Updated Engineers' Estimate o Schedule • Water and Sewer Rate Setting Policy Direction o Commercial sewer rates based on water consumption? o Water base charge for service with all consumption rates? • Public Works Board Projects — Update o Melcher Pump Station 0 390 Booster Station o Sewer Lift Station Upgrades • Bay Street Lift Station Next Meeting: July 12, 2022 Future Agenda Items: • Well 13 and PRV's • McCormick Sewer PS #1 Repairs • Storm Drainage Comprehensive Plan • Option to Levy Excise Taxes on W/S • Bay Street - Street Lighting & Marquee • Water System Fluoridation • Sanitary Side Sewer Policy back to agenda lw—�—�-, Yl- --� Air X�, -W .4 City of Port Orchard er-W OPCHARD Waterbody Augmentation STREAM AUGMENTATION DRAFT I April 2022 C,'*r►,Wff1 ftoola back to agenda ORCHARD City of Port Orchard Waterbody Augmentation STREAM AUGMENTATION DRAFT I April 2022 This document is released for the purpose of information exchange review and planning only underthe authorityof Aurelie Nabonnand, April 19, 2022, State of Washington PE No. 56703. back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Contents Section 1 - Project Overview 1.1 Background 1.2 Identified Waterbodies 1.3 Augmentation Infrastructure Section 2 - Methodology of Alignment Development 2.1 Augmentation Alignment Criteria 2.2 Hydraulic Analysis Section 3 - Proposed Alignments 3.1 Proposed Alignments 3.1.1 East Branch 3.1.2 Central Branch 3.1.3 West Branch Section 4 - Proposed Alignment Cost Estimates 4.1 Cost Development Methodology 4.2 Cost Assumptions 4.3 Proposed Alignment Cost Estimates Appendices Appendix A Hydraulic Analysis Appendix B Cost Estimates Tables Table 1 Hydraulic Characteristics of Waterbodies Requiring Augmentation Table 2 Burley Creek Pipeline Comparison Table 3 East Branch's Hydraulic Characteristics Table 4 Huge Creek's Hydraulic Characteristics Table 5 Gorst Creek's Hydraulic Characteristics Table 6 Unit Cost Development and Assumptions Table 7 Proposed Alignment Cost Estimates 1 1 1 5 7 7 7 9 9 9 12 12 17 17 17 18 5 8 10 12 12 17 18 C—Corvlw° DRAFT I APRIL2022 1 i pw://Ca rol I o/Doc uments/C I ient/WA/Port Orcha rd/10453 B00/Del Nee bles/R PTOl/Stream Augmentation back to agenda CITY OF PORTORCHARD I WATERBODYAUGMENTATION I STREAM AUGMENTATION Figures Figure 1 Study Area Creeks 3 Figure 2 Schematic of Augmentation Diffuser (Goldsmith and Associates, Inc.) 6 Figure 3 East Branch Proposed Alignment and Augmentation Sites 11 Figure 4 Huge Creek Proposed Alignment and Augmentation Site 13 Figure 5 Gorst Creek Proposed Alignment and Augmentation Site 15 ii I APRIL 2022 1 DRAFT C Car�.I1^o back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Abbreviations AACE Am eri can Assoc iati on of Cost Estimators Carollo Carollo Engineers, Inc. cfs cubic feet persecond City City of Port Orchard ENR CCI Engineering News Record Construction Cost Index Ft feet ft/s feet per second GIs geographic information system gpm gallons per minute in. inch(es) PRV pressure -reducing valve psi pounds persquare inch PVC polyvinyl chloride RN Robinson Noble ROE report of examination ROW right-of-way WSUD West Sound Utility District 4ircarollo- DRAFT I APRIL 2022 1 iii back to agenda STREAM AUGMENTATION I WATERBODYAUGMENTATION I CITY OF PORT ORCHARD Section 1 PROJECT OVERVIEW 1.1 Background The City of Port Orchard (City) is currently having several water rights applications being processed under the Foster pilot program. As part of the process of completing water right reports of examination (ROES) for the applications, a mitigation plan must be developed for any identified impairments of senior water rights including stream flows. Groundwater modeling of the proposed water rights indicates streamflow impairment will occur at several local creeks. As part of the mitigation plan, the City is considering the direct discharge of potable or wholesale water purchased from nearby utilities or water purveyors into local creeks, rivers, and lakes for augmentation. The mitigation plan and complete ROES are subject approval from the Washington State Department of Ecology. For a previous water right mitigation plan, Robinson Noble (RN), the City's primary project consultant, developed the5tream Augmentation Plan (2006),which preliminarily defined local waterbodies that require augmentation, potential discharge locations, and conceptual designs for required infrastructure. Forthe current work, RN has received updated information and new direction from the City, which were used to revise RN's hydrogeological model of the augmentation project. RN has tasked Carollo Engineers, Inc. (Carollo) to develop conceptual understandings of where and how augmentation infrastructure will be situated on waterbodies against specific augmentation rates generated through RN's most recent hydrogeological-modeling effort. This report focuses on evaluating and selecting alignments of pipelines that will route and discharge potable water into each identified waterbody. More specifically, thefollowing sections define which local waterbodies require augmentation, the infrastructure leading to each discharge point, criteria for selecting viable pipeline alignments and discharge points, and proposed alignments to each identified waterbody and their planning -level cost estimates. 1.2 Identified Waterbodies In March 2022, RN provided Carollo with hydrogeological modeling data for 17 creeks, one river, and one lake that are located across 162 square miles in the Kitsap Peninsula. Figure 1locates all the waterbodies included in this analysis. DRAFT I APRIL2022 1 1 back to agenda Arc '• 1 ~ J r � �0 rk l o EastFo < °fZ h m NUnion 10 40 ` / Gee G°Ui{er tee T' STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Legend City of Port Orchard Retail Water Service Area Waterways For Study Adjacent Streams : r Feet 0 5,000 10,000 Data Sources: Kitsap County GIS, Pirece County GIS Disclaimer: Features shown in this figure are for planning purposes and represent approximate locations. = Engineering and/or survey accuracy is not implied. pop ,1 4 fie r 0 . K 4drcaro/%® Last Revised: April 20, 2022 N , Y U J � i Figure 11 Study Area Creeks back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Table 1 lists the local waterbodies that were reviewed in RN's hydrogeological analysis and identified as requiring augmentation. The table also tabulate required augmentation rates for each of the 10 waterbody identified. Table 1 Hydraulic Characteristics of Waterbodies Requiring Augmentation Gorst 22.7 0.09 Parrish 5.6 0.02 Ross 4.3 0.02 Blackjack 43.4 0.17 Salmonberry 11.1 0.04 Curley 7.4 0.02 Olalla 14.5 0.06 Purdy 4.1 0.02 Burley 31.7 0.11 Huge 5.6 0.02 Notes: Abbreviations: cfs - cubic feet per second; ft -feet. Of the 10 waterbodies listed in Table 1, three - Ross Creek, Blackjack Creek, and Parrish Creek have augmentation projects already underway. As such, Carollo's analysis and work did not include these creeks and instead, only encompass the remaining seven waterbodies. 1.3 Augmentation Infrastructure As part of the Stream Augmentation Plan (RN 2006), RN's subconsultant Goldsmith and Associates, Inc. prepared primary designs of two pieces of infrastructure that will foster streambank infiltration: 1. A meter and valve vault. 2. A diffuser station. Each discharge site will have a tap on a potable water line associated with the City's system or that of another nearby water purveyor. Each connection between the water line and the augmentation pipeline will be equipped with a vault that contains a pressure -reducing valve (PRV) and flowmeter, called the meter and valve vault. At the opposite end of the augmentation pipeline (i.e., discharge point), a diffuser station will be constructed. This station will contain a backflow preventer and flowmeter, both of which will also be housed in a vault, followed by a perforated pipe or augmentation diffuser that is filled with gravel. Figure 2 shows a schematic of the diffuser and its associated piping. To summarize, water will pass through the two vaults (i.e., each at opposite ends of the pipeline) and flow out of the diffuser into the ground, infiltrating selected waterbodies. 4w7carollo- DRAFT I APRIL2022 1 5 CITY OF PORTORCHARD I WATERBODYAUGMENTATION I STREAM AUGMENTATION back to agenda BACRFLow FLOW METER P REYE NT OR VALVE BOX PERE PIPE HTED I FLLED WITH 1/4' MIN. WASHED GRAVEL FILLED STANDARD S!A' SERVICE FAP D-DEPTH G ° O ° SEEE TABLE) ° EXISTING WATERLINE INTERFLew AUGIVENTATI°N JVARMBLE SIZ E1 RELEAGEO TO STREAM IJNIDN VALVE BGM Flew PRESSURE REDUCING VALVE Y-TYPE DR T-TYPE FILTER 4 AEe°IRED1 FLOW cDNTR°L VALVE Figure 2 Schematic of Augmentation Diffuser (Goldsmith and Associates, Inc.) SIRE4W 6 1 APRIL2022 1 DRAFT C back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Section 2 METHODOLOGY OF ALIGNMENT DEVELOPMENT 2.1 Augmentation Alignment Criteria The following criteria were developed for use in selecting pipeline alignments and discharge -site locations for each identified waterbody: • All discharge sites must be placed near perennial waterbodies. • Sites selected must be located at the road crossings of creeks to maintain the pipe alignment in the public right-of-way (ROW). • Prioritized upstream locations upstream offlow impairment. • Sites must be selected in sections of waterways with known fish habitats. • Sites must avoid discharging into wetlands, where possible. • Sites must avoid discharging into steep slope or erosion hazard areas, where possible. The following geographic information system (GIS) data files from Kitsap County and Pierce County, within which the City's boundaries or select waterbodies fall within. This data was overlayed and used to identify wetlands and areas of concern within the project site: • "Areas of concern" data from Kitsap County: Identifies geological areas of concern. • "Areas" data from Kitsap County: Identifies geological areas that are highly erodible or pose the potential for high erosion. • "Wetlands" from Kitsap and Pierce Counties: Identifies known wetlands. • "Elevations" from Kitsap and Pierce Counties: Identifies general ground elevations in the project area. 2.2 Hydraulic Analysis Each waterbody's hydraulic model was built using GIS elevation profiles of each proposed alignment. During the modeling process, the following general notes and assumptions were made: • All pipes are flowing full and pressurized. • Major and minor losses in pipes were calculated using the Darcy-Weisbach equations. • Many waterbodies share the same trunk pipeline. • Each branch pipeline to the individual waterbody delivers just the required volume of augmentation flow. • Trunk flow at the Cityconnection is the sum of all waterbodies in that particular branch (Section 3 defines the specific three branches used in this analysis). After each split to a waterbody, thetrunk flow is reduced to only include all remaining waterbodies further downstream. 4ircarvlw- DRAFT I APRIL2022 1 7 back to agenda CITY OF PORT ORCHARD I WATERBODY AUGM ENTATION I STREAM AUGMENTATION • The City connection will be capable of providing the required pressure for the whole system to flow by gravity. • Cityconnections were assumed to be 88 pounds per square inch (psi) at connection point to simulate typical pressure in distribution pipes. • The outlet ofthe flow intothe waterbody is modeled as open exit loss. The hydraulic model was broken down into sections oftrunk and waterbody pipelines, for each of which the model was run using pipe sizes between three to eight inches (in.). Per pipe size, the following parameters were calculated: • Velocity: Foreach alignment, a hydraulic profile was developed to match the outfall velocity with the required impairment flow (i.e., 0.4 percent of the seasonal flow). • Pressure: Pressure of greater than 150 psi was considered too high, and lower than 10 psi was considered too low. This parameter was used to confirm pipe size was reasonable forthe required impairment flow. • Headloss: Headloss of greater than 30 ft was considered too high; therefore, all scenarios with headloss of greater than 30 ft were eliminated from consideration. • Water Age: This parameter is important to consider in ensuring that water will reach the waterbody at a timely rate to prevent algae build-up. Pipe diameters were selected to meet thevelocity and pressure requirements, minimize headloss, and foster a low water age. Table 2 presents an example comparison of pipe diameters that may serve the Burley Creek pipeline. Specific to Burley Creek, a pipeline diameter of 4 in. was selected, given that it generates headloss below 30 ft and maintains a low water age. Appendix A offers a full table of similar comparisons for all identified waterbodies. Tablet Burley Creek Pipeline Comparison 3 2.3 46.8 49.7 124 0.53 4 1.3 11.56 50.4 133 0.95 50.4 4,400 6 0.6 1.61 50.6 135 2.1 8 0.3 0.4 50.6 136 3.8 Notes: Abbreviations: ft/s -feet per second; gpm - gallons per minute. 8 1 APRIL2022 1 DRAFT C back to agenda STREAM AUGMENTATION I WATERBODYAUGMENTATION I CITY OF PORT ORCHARD Section 3 PROPOSED ALIGNMENTS 3.1 Proposed Alignments In developing alignments, waterways requiring augmentation were grouped into three separate areas: The west, central, and east branches. Note that, in certain instances, a different utilityor water purveyor was found to be closer to the required waterbody than that of the City. In such cases, the augmentation pipeline was assumed to be connected to the closest system. 3.1.1 East Branch The east branch are divided into two groups to serve thefollowing waterways: • Group A: a. Burley Creek. b. Olalla Creek. c. Purdy Creek. • Group B: a. Salmonberry. b. Curley Creek. The West Sound Utility District (WSUD) is the closest water utilityto waterbodies requiring augmentation in the east branch; therefore, augmentation pipelines will be connected totheir system instead of the City's potable water system. Figure 3 shows the proposed pipeline and connections for the east branch. Note that the E1 through E3 are segments of thetransmission line that will bring water from WSUD's system to all the waterbodies in the east branch. Furthermore, Salmonberry and Curley Creeks are combined in thetable because augmentation of Salmonberry Creek is assumed to flow into Curley Creek, contributing to this downstream waterbody's eventual augmentation. Table 3 shows the selected pipe diameter of each segment as well as its pipe length, headloss, pressure, and flow (i.e., hydraulic characteristics). 4ircarollo- DRAFT I APRIL2022 1 9 back to agenda CITY OF PORT ORCHARD I WATERBODYAUGMENTATION I STREAM AUGMENTATION Table3 East Branch's Hydraulic Characteristics Length • . �- • .• . n.A.- -• ment •• . . • GroupA E1 9,500 6 87.8 0.2 1.0 9.7 54.3 104 0.95 E2 18,300 4 37.3 0.08 0.42 3.9 58.3 103 2.5 E3 7,970 4 10.2 0.02 0.26 1.0 41.3 99 1.1 Burley 4,400 4 50.4 0.11 1.3 11.6 50.4 133 0.95 Olalla 6,800 4 27.2 0.06 0.70 5.7 57.8 175(4) 2.7 Purdy(l) 10 4 10.2 0.02 0.26 0(2) 131(3) -- 0.01 Group B Salmon berry/Cu rley(l) 10 4 29.7 0.07 0.76 0(2) 88(3) - 0.004 Notes: (1) Stream is right off of major trunk or utility pipeline, so 10 feet is assumed from pipeline to stream. (2) At 10 feet length, can assume no significant headloss. (3) Since line is only assumed 10 feet, only one pressure is reported as min and max pressure difference is minimal. (4) Max pressure due to low elevation of discharge point. 10 1 APRIL 2022 1 DRAFT 4drcarvlw- back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Legend WWTP Potential West Sound O Discharge Site West Sound Utility District Water Main Ile City Pipeline Proposed Pipeline East Branch Trunk ' Mainline (E1- E3) 3 Burley Creek r - - Olalla Creek A w Roads w 44/ > \IESE G� ¢ �0 - Water Bodies L / = U �P (D E GO�iLL �y a o m Q� C'J\ a �e Feet ti oC'> 0 2,500 5,000 � v Data Sources: Kitsap County GIS, t N SE SEDGWICK RE Pierce County GIS Salmonberry SE SE u O _ Disclaimer: Features shown in this �, �� 1 F figure are for planning purposes and w ` SE KING RID / represent approximate locations. Q mr lj SE EDAR D l L Engineering and/or survey accuracy \\ w • ., is not implied. m SE OVERAA RD a J, F SW LIDER RD �D � E?- T Q BIELMEIER)RD a E'I. �• _ `> oPB m LU • � 5 SE OLALLA VALLEY FtD � Burley � SE MULLENIX RD �U /SEE FRAGARIA RD w — c/) w z Z � � co rn Z 0 O m m Z SE WILLOCK RD J co P m w Q U cc m Q w w w w aCKRD w a o ~ in - W W E2 Cn o of It w { 'a w co SEB RLEYOLALLA D 01alla ��S' 0 m Uj Q SE OAK RD co ai E3-� 0 a x U ooa a Creek 2 } a VE: RD E PI E D O 00 E NELSON RD� I SE NELSON RD UCE RD w Q Purdy �� ,SCFNn/ALLEY 4irearo/%° Figure 3 East Branch Proposed Alignment and Augmentation Sites Last Revised: April 20, 2022 pw:\\IO-PMNT.Carol lo.loca l: Carol to\Documents\Client\WA\Port Orchard\10453Boo\GIS\MXD\Port_Orchard.APRX back to agenda CITY OF PORT ORCHARD I WATERBODY AUGM ENTATION I STREAM AUGMENTATION 3.1.2 Central Branch In the central branch, Huge Creek is the only waterway that requires augmentation. Due tothe long distance and steep topography between the City connection and thedischarge point, it is assumed that the Citywould be able to increase the starting pressure of the line to 115 psi to maintain a minimum of 10 psi throughout the alignment. The pipeline will be connectedtothe City's potable water line, as shown in Figure 4. Table 4 shows the hydraulic characteristics of Huge Creek. Table 4 Huge Creek's Hydraulic Characteristics Huge 34,570 4 5.6 0.02 0.2 3.1 10.8 115(1) 45.7 Notes: (1) Assuming City connection can start at115 psi. 3.1.3 West Branch In the west branch, only Gorst Creek requires augmentation. As shown in Figure 5, this creek will be connected to the nearby City of Bremerton's water system. One of the City of Bremerton's pipelines directly passes Gorst Creek, so the pipeline is assumed to rest approximately 10 ft from the creek. Table 5 shows the hydraulic characteristics of Gorst Creek. Table5 Gorst Creek's Hydraulic Characteristics Gorst 10 4 49 0.11 1.26 0.03 88 0.002 Notes: (1) Stream is right off of utility pipeline, so 10 feet is assumed from pipeline to stream. (2) Since line is only assumed 10 feet, only one pressure is reported as min and max pressure difference is minimal. 12 1 APRIL 2022 1 DRAFT Carte. <l,�o back to agenda 4f 0 v� sco w O c/1 Y �I I �Z � / 0 SW LP,Ke J\EVIL y An LNSM/ A U _ a u) a uj O= � Y ay 3 SW L E HELENA RD i SW 69�Y ST 1 ' m� SW WAVA LN O tJ w v O 40) P V O I z Huge Creek Q �O 0E1LINE00 , ASWUNTERRD wcc SW PARADSW STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD SE EDAR RD - 1.y CLEVER , / SWJHRD U) r All o _a m SW WILDWOOD RD w AB6� / LL SW OAK RL SW N TF 3 O O SW PINE RD , o r - < S RUCE RD o� E DO'? m SE BIELMEIER Rl� Ilk III V I �arley I Z J U Z D m HCRF Legend Q Potential Discharge Site City Pipeline Proposed Pipeline Huge Creek Roads Water Bodies Feet 0 2,000 4,000 Data Sources: Kitsap County GIS, Washington State DNR Disclaimer: Features shown in this figure are for planning purposes and represent approximate locations. Engineering and/or survey accuracy is not implied. [taro/%® Figure 4 Huge Creek Proposed Alignment and Augmentation Site Last Revised: April 20, 2022 pw:\\IO-PW-INT.Carol lo.loca l: Carol lo\Documents\Client\WA\Port Orchard\104S313oo\GIS\MXD\Port_Orchard.APRX back to agenda Gorst Creek G In rst STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD rn Z J W M 0 W oJF �4(/ OHO CLIFTON RID Legend Potential City of Q Bremerton Discharge Site Proposed Pipeline City of Bremerton Water Main Roads P `b Water Bodies A Feet 0 1,000 2,000 Data Sources: Kitsap County GIS, Washington State DNR Disclaimer: Features shown in this figure are for planning purposes and represent approximate locations. Engineering and/or survey accuracy is not implied. S� PNOR��S DR ok o . I QCaPO//O® Figure 5 Gorst Creek Proposed Alignment and Augmentation Site Last Revised: April 20, 2022 pw:\\IO-PW-INT.Carol lo.loca l: Carol lo\Documents\Client\WA\Port Orchard\10453Boo\GIS\MXD\Port_Orchard.APRX back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Section 4 PROPOSED ALIGNMENT COST ESTIMATES 4.1 Cost Development Methodology Carollo developed cost estimates fort he proposed alignments according to thefirm's experience working on other projects of similar scope and capacity. These estimates have been prepared for general planning purposes, and final costswill depend on actual labor and material costs, competitive market conditions, final project scope, implementation schedule, preliminary alignment generation, results of investigations that review alternative routings, and results of detailed utility and topography surveys. Cost estimates are Class 4 budget estimates, as established by the American Association of Cost Estimators (AACE). This level of estimate is used for budgeting and feasibility studies and assumes a 10 to 40 percent level of project definition. The expected accuracy range is minus 20 percent to plus 30 percent, meaning the actual cost should fall in the range of 20 percent below the estimate to 30 percent above the estimate. 4.2 Cost Assumptions The following key assumptions were made to develop unit costs for the pipelines, meter and valve vaults, and diffuser stations: • Cost estimates were developed in 2022 dollars and against the Engineering News Record Construction Cost Index's (ENR CCI) city average of 12791. • Cost estimates do not include costs for land, easement, or ROW acquisitions. • The following contingencies were defined: - Construction: 30 percent. - General conditions: 10 percent. - Contractor overhead and profit: 15 percent. - Engineering, legal, and administration: 20 percent. • Same unit costs are assumed for four and six-inch schedule 80 polyvinyl chloride (PVC) piping. • Municipal and purveyor connections will each have a meter and valve vault. Appendix B documents additional cost assumptions that were employed while Table 6 lists unit costs and assumptions without contingencies. Table 6 Unit Cost Developmentand Assumptions Pipeline 4-inch PVC Pipe $169 Linearft 6-inch PVC Pipe $169 Linearft Water Source PRV $32,252 Each Diffuser System $41,420 Each 4ircarollo DRAFT I APRIL2022 1 17 back to agenda CITY OF PORT ORCHARD I WATERBODY AUGM ENTATION I STREAM AUGMENTATION 4.3 Proposed Alignment Cost Estimates Applying the cost assumptions introduced in Section 3.2, Table 7 breaks down estimated costs per pipeline. Table7 Proposed Alignment Cost Estimates Segment (WaterPurveyor) East Branch Total Cost $15.6 GroupA E1(WSU D) 9,400 6 $3.1 E2 (WSUD) 18,400 4 $5.9 E3(WSUD) 8,000 4 $2.6 Burley (WSUD) 4,400 4 $1.5 Olalla (WSUD) 6,700 4 $2.3 Purdy(WSUD) 10 4 $0.08 Group B Salmon berry/Cu Hey (WSU D) 10 4 $0.08 Central Branch Total Cost $11.2 Huge (City) 34,600 4 $11.2 West Branch Total Cost $0.08 Gorst (Bremerton) 10 4 $0.08 18 1 APRIL 2022 1 DRAFT back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD AppendixA HYDRAULIC ANALYSIS 4rcarollo- DRAFT I APRIL2022 back to agenda STREAM AUGMENTATION I WATERBODY AUGMENTATION I CITY OF PORT ORCHARD Appendix B COST ESTIMATES 4rcarollo- DRAFT I APRIL2022 back to agenda City of Port Orchard Stream Augmentation Notes: (1) Original cost estimates were made in 2022 dollars. Engineering News Report (ENR) U.S. 20-City Construction Cost Index: (2) To update cost assumptions below using an updated cost index, insert it here: Mar-22 1 12791 (3) Cost estimates do not include costs for land acquisition, easements or ROW acquisition unless noted. (4) Cost estimates per foot of pipe are before contingencies. Costs in 2022 Dollars Pipe Installation Unit Costs Pipeline Diameter (inches) Cost per LF 4 $169 6 $169 Pressure Reducing Valves Station Cost per Each Pressure Reducing Valve Station $32,325 Diffuser Station Cost per Each Diffuser Station $41,420 Adjustment Factors Construction Contingency 30% General Conditions 10% Contractor Overhead and Profit 15% Engineering, Legal, and Administrative (ELA) 20% The cost estimates within this CIP tool are based on our perception of current conditions at the project location. This estimate reflects our professional opinion of accurate costs at this time and is subject to change as the project design matures. Carollo Engineers, Inc. has no control over variances in the cost of labor, materials, equipment; nor services provided by others, contractor's means and methods of executing the work or of determining prices, competitive bidding or market conditions, practices or bidding strategies. Carollo Engineers cannot and does not warrant or guarantee that proposals, bids or actual construction costs will not vary form the costs presented as shown. Port Orchard Stream Augmentation CIP Assumptions back to agenda City of Port Orchard Stream Augmentation C Ca,,,,IJ,, e =Diffuer $ 3,541,000 $ 11,403,000 $ 639,000 ... Project Information Project Cost Total Contractor Unit Cost Construction General Project Project Name Improvement Pipe Proposed Units Project Description ($/Unit) Subtotal Contingency Construction Conditions Overhead and ELA Total Cost No. Type Length (LF) Size (inches) Element Cost Profit 30% 10% 15% 20% P-1 Salmonberr /Curie Y Y New Pipe P io 4 Inches Pipe 4' P Install 4-inch pipe to Salmonberry Creek. Connects directly to WSUD $ 169 $ 1,690 $ 507 $ 2,197 $ 220 $ 329 $ 439 $ 3,000 connection. P-2 Burley New Pipe 4400 4 Inches 4" Pipe Install 4-inch pipe to Burley Creek. Connects to the E-i pipe section $ 169 $ 743,466 $ 223,040 $ 966,506 $ 96,651 $ 144,976 $ 193,301 $ 1,401,000 P-3 Olalla New Pipe 6700 4 Inches 4" Pipe Install 4-inch pipe to Olalla Creek. Connects to the E-2 pipe section. $ 169 $ 1,132,096 $ 339,629 $ 1,471,725 $ 147,173 $ 220,759 $ 294,345 $ 2,134,000 P-4 Purdy New Pipe 10 4 Inches 4" Pipe Install 4-inch pipe to PurdyCreek. Connections to the E-3 pipe section. $ 169 $ 1,690 $ 507 $ 2,197 $ 220 $ 329 $ 439 $ 3,000 P-8 Huge New Pipe 34575 4 Inches 4" Pipe Install 4-inch pipe to Huge Creek. Connects dicrectlyto City connection. $ 169 $ 5,842,125 $ 1,752,637 $ 7,594,762 $ 759,476 $ 1,139,214 $ 1,518,952 $ 11,012,000 P- 9 Gorst New Pie P 20 4 Inches Pie 4' P Install 4-inch pipe to Gorst Creek. Connects dicrectlyto City of Bremerton $ 169 $ 1,690 $ 507 $ 2,197 $ 220 $ 329 $ 439 $ 3,000 connection.Nor- E-i East Branch Line Supply PP Y 9400 6 Inches 6" Pipe e Install 6-inch pipe connected to the WSUD system for distribution for stream $ 169 $ 1,588,314 $ 476,494 $ 2,064,809 $ 206,481 $ 309,721 $ 412,962 $ 2,994,000 augmentation. Will augment Burley Creek. E-2 East Branch Line 2 Supply 3.8400 4 Inches 4" Pipe Connected to E-2. Will augment Olalla Creek. $ 169 $ 3,109,041 $ 932,712 $ 4,041,753 $ 404,175 $ 606,263 $ 808,351 $ 5,861,000 E-3 East Branch Line a Supply 8000 4 Inches 4" Pipe Connected toE-2.Will augment PurdeyCreek. $ 169 $ 1,351,757 $ 405,527 $ 1,757,284 $ 175,728 $ 263,593 $ 351,457 $ 2,548,000 DiffuserPRV and G-2 Diffuser Cost Supply 6 EA Diffuser Setup Total cost for all six discharge sites. $ 41,418 $ 248,508 $ 74,552 $ 323,060 $ 32,306 $ 48,459 $ 64,612 $ 468,000 G-2 East Branch - PRV Box Supply i EA PRV Vault PRV Box forthe connection at WSUD $ 30,325 $ 30,325 $ 9,098 $ 39,423 $ 3,942 $ 5,913 $ 7,885 $ 57,000 G-3 Central Branch - PRV Box Supply 1 EA PRV Vault PRV Box for connection at City $ 30,325 $ 30,325 $ 9,098 $ 39,423 $ 3,942 $ 5,913 $ 7,885 $ 57,000 G-4 Gorst - PRV Box Supply i Ea PRV Vault PRV Box for connection with City of BermertonLine $ 30,325 $ 30,325 $ 9,098 $ 39,423 $ 3,942 $ 5,913 $ 7,885 $ 57,000 back to agenda City of Port Orchard Stream Augmentation Carte„� Project Title: Salmonberry/Curley Project No.: P-1 Facility Type: Creek Branch Pipeline Go to CIP Summary Table Project Information: Description: Install 4-inch pipe to Salmonberry Creek. Connects directly to WSUD connection. Unit Cost Quantity Unit ($/Unit) Subtotal Total Contractor Constructio General Construction Overhead an Contingent Cost Conditions Profi 30% 10% 15% ELA MtaCos Project Elem ---------- ---------- ---------- ---------- ---------- ---------- Total Anticipated Project Cost r Cost Allocation: 1� Project Type Percent Improvement: 1 100% $ 81,073 Capacity: 0%1 $ - Repair & Replacement: 1 0%1 $ - 100% $ 81,073 roiect Timing: Project Element Timing Cost — ntire Project 0 $ 81,07? Total Anticipated Project Cost : r Project Location Map: Go to Maps Tab saimeneerry �� a et s NA+Dab S 1 4m.rwu�ppp OWE F ES� Purdy � •'r..�,nr n.. w back to agenda City of Port Orchard Stream Augmentation <c7caro/% Project Title: Olalla Project No.: P-3 Facility Type: Creek Branch Pipeline Go to CIP Summary Table Protect Information: Description: Install 4-inch pipe to Olalla Creek. Connects to the E-2 pipe section. t Element WC 10 LF r Total Contractor Construction General Unit Cost Construction Overhead and ELA $/Unit) Subtotal Contingency Cost Conditions Profit 10 W AN 30% 10% 15%MN 20% - 169 1,132,09611� ---------- ---------- ---------- ---------- ---------- ---------- ---------- Total Anticipated Project Cost Cost Allocation: Project Timing: Project Type Percent Cost Project Element Timing Cost Improvement: 100% $ 2,212,073 Entire Project 0 $ 2,212,073 Capacity: 0% $ Condition: 0% $ 100% $ 2,212,073 1 Total Anticipated Project Cost 2,212,073 Protect Location Map: i d Et' 3 I.N.V .. •. •L ' { xa'na'b s.e .•wwa q, Y Q Guru `x 4 back to agenda City of Port Orchard Stream Augmentation Proiect Title: Purdy Facility Type: Creek Branch Pipeline Proiect Information: Description: Install 4-inch pipe to PurdyCreek. Connections to the E-3 pipe section. Proiect No.: P-4 Go to CIP Summary Table Anticipated Project Cost: Project Element Quantity Unit Total Contractor Construction General Unit Cost Construction Overhead and ELA Lta ($/Unit) Cost Profit Contingency Conditions Total Cost 30% 10% 15% 20% off ---------- ---------- ---------- ---------- ---------- ---------- Total Anticipated Project Cost Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab 8 Total Anticipated Project Cost r 0' . Project Element Timing Cost .-itire Project Total Anticipated Project Cost r Proiect Location Map: - a .gene Go to Maps Tab IM f� � ro „•ram PI,,.,. f lm Mnn rrvnk ,p � Wlnlwitl�E]V IS.111.onberry back to agenda City of Port Orchard Stream Augmentation ProiectTitle: Burley ProiectNo.: P-2 FacilitvTvpe: Creek Branch Pipeline Go to CIP Summary Table Project Information: Description: Install 4-inch pipe to Burley Creek. Connects to the E-1 pipe section • �R roject Element Quantity Unit , Total Contractor Construction eneral Unit Cost Construc Overhead and Subtotal Contingency WM ($/Unit) C rofit 30%--- Uot-lCost ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- Total Anticipated Project Cost Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab Cost Allocation: Project Timing: Project Type Percent cost I Project Element Timing Cost Improvement: 100% $ 1,479,073 Entire Project 0 1 $ 1,479,073 Capacity: 0%1 $ - Condition: 0%1 $ 100% $ 1,479,073 $ 1,479,073 Project Location Map: Go to Maps Tab r f Ell 3ud.y £ xvna b E2 v wr.o OYlla -' MY �, back to agenda City of Port Orchard Stream Augmentation C Ca Project Title: East Branch Line 1 Facility Type: Supply Trunk Line Project No.: E-1 Go to CIP Summary Table Project Information: Description: Install 6-inch pipe connected to the WSUD system for distribution for stream augmentation. Will augment Burley Creek. Anticipated Project Cost: Construction Unit Cost Total General Contractor Tp,oject IrQuantity Element Unit Subtotal Contingency ($/Unit) L' Construction Conditions Overhead Cost L and ELA Total Cost Profit 0' 6" Pipe 6 IF $ 169 $ 1,588,314 $ 476,494 $ 2,064,809 $206,481 $ 309,721 $ 412,962 $ 2,994,000 PRV Vault 1 EA $ 30,325 $ 30,325 $ 9,098 $ 39,423 $ 3,942 $ 5,913 $ 7,885 $ 57,000 $ 3,051,000 Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab Cost Allocation: Project Timing: Project Type Percent Improvement: 100% $ Cost 3,051,000 Project Element Entire Project Timing Cost 0 $ 3,051,000 Capacity: 0%1 $ Condition: 0% $ 100% $ 3,051,000 Total Anticipated Project Cost 3,051,000 Project Location Map: —b I ameLawe Go to Maps Tab � � .wwr.rw LewO I � nn W.►. WWwiel <31 .� ' N'•1[LeSn cwo Lcw • ,�}ITOnEeeey Ll x 1LLner ,[...s ...., f iLIA[!ab Q p% E$ .. urdy back to agenda City of Port Orchard Stream Augmentation Care„^ Project Title: East Branch Line 2 Project No.: E-2 Facility Type: Creek Branch Pipeline Go toClPSummaryTable Project Information: Description: Connected to E-1. Will augment Olalla Creek. Anticipated Proiect Cost: Unit Cost Construction Total tor Construction General CIContr:c d T Project Element Quantity Unit ($/Unit) Subtotal Co ntingency verhe and Total Cost Cost Conditions Profit 4" Pipe 18,400 LF $ 169 $ 3,109,041 $ 932,712 $ 4,041,753 $404,175 $ 606,263 $ 808,351 $ 5,861,000 $ 5,861,000 Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab Cost Allocation: Project Timing: F—I Project Type Percent Improvement: 1 100% $ Cost 5,861,000 1 Entire Project Project Element Timing Cost 1 0 1$ 5,861,000 Capacity: 1 0%1 $ Repair & Replacement: 1 0%1 $ 100$5 $ 5,861,000 Total Anticipated Project Cost$ 5,861,000 Project Location Map: - irGo to Maps Tab 1f 4 ,miemnrn.nawe •NM d ,��yIrTOnEeery FL f E1 Y 1.1.y r' .... . w.mb Y K2 F. � tl E4 It back to agenda City of Port Orchard Stream Augmentation Care„^ Project Title: East Branch Line 3 Project No.: E-3 Facility Type: Creek Branch Pipeline Go toClPSummaryTable Project Information: Description: Connected to E-2. Will augment Purdey Creek. Anticipated Proiect Cost: Unit Cost Total Construction Construction General CIContr:c tor d T Project Element Quantity Unit ($/Unit) Subtotal Co ntingency Cost verhe and Total Cost Conditions Profit 4" Pipe 8,000 LF $ 169 $ 1,351,757 $ 405,527 $ 1,757,284 $175,728 $ 263,593 $ 351,457 $ 2,548,000 $ 2,548,000 Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab Cost Allocation: Project Timing: F—I Project Type Percent Improvement: 1 100% $ Cost 2,548,000 Entire Project Project Element Timing Cost 0 $ 2,548,000 Capacity: 1 0%1 $ - Repair & Replacement: 1 0%1 $ 100$2 $ 2,548,000 Total Anticipated Project Cost$ 2,548,000 Project Location Map: irGo to Maps Tab .3i r — ..u.,. °" saimeneerry r-riaona d Et !�Y 4 I b'. E2 .+ °Fdy back to agenda City of Port Orchard Stream Augmentation Project Title: Gorst Facility Type: Creek Branch Pipeline Project Information: Description: Install 4-inch pipe to Gorst Creek. Connects dicrectly to City of Bremerton connection. Project No.: P-9 Go to CIP Summary Table Anticipated Pro'ect Cost., �roject Element uantit Diffuser Contractor Construction eneral Unit Cost Construction Overhead an S I Contingency �nditions �� ($/Unit) Cost Profit •a $ 507 2,197 $ 220a00 ��� Total Cost aI78,073 Total Anticipated Prol Notes on Cost Estimation: Total cost does not include easement acquisition. Go to Assumptions Tab Cost Allocation: Project Timing: Project Type Percent Cost Project Element Timing Cost Improvement: 1 100% $ 81,073 1 Entire Project 0 $ 81,073 Capacity: 0% $ - Repair & Replacement: 0% $ - 100% $ 81,073 Total Anticipated Project Cost$ 81,073 Project Location Map: Gorst Go to Maps Tab ":' nn[IIARD STRLAMF tD W Aucmf R mim STUDY I CM U FM i,' YNA Utw Patentvl Uty of 9rernertm DrAmrp ME — PNgpa d PIWInt City d&eirwrim - _ WYer Man hw% AL4�t - VAmiff WWs r O V l.IIW NIX or�r srirry rrw I4.r, ea. I, rrrrpm>terbr► �� tawrM� rwe.n>•arrr n do Wrr�arr. i4�� �eFr�wr�+Fr� 4 Hf rewgarna r.r.r-"F N J back to agenda City of Port Orchard Stream Augmentation Project Title: Huge ProjectNo.: P-8 Facility Type: Creek Branch Pipeline Go to CIP Summary Table Project Information: Description: Install 4-inch pipe to Huge Creek. Connects dicrectly to City connection. Anticipated Project Cost: roject Element Quantity Unit 1:P Construction Contractor Unit Cost Cnonstructil Overhead lub;AVontingen L C t IL a k Cost Prof 0•. Total Cost 4" Pipe 34,575 LF $ 169 $ 5,842,125 $ 1,752,637 $ 7,594,762 $759,476 $ 1,139,214 $ 1,518,952 $ 11,012,000 Diffuser Cost 1 EA $ 41,418 $ 41,418 $ 12,425 $ 53,843 $ 5,384 $ 8,077 $ 10,769 $ 78,073 PRV Vault 1 EA $ 30,325 $ 30,325 $ 9,098 $ 39,423 $ 3,942 $ 5,913 $ 7,885 $ 57,000 Notes on Cost Estimation: Total cost does not include easement acquisition. $ 11,147,073 Go to Assumptions Tab Cost Allocation: Project Timing: Improvement: 100% $ 11,147,073 Entire Project 0 $ 11,147,073 Capacity: 0% $ - Repair & Replacement: 0% $ - 100% Total Anticipated Project Cost$ 11,147,073 Project Location Map: Go to Maps Tab ro�QRP P$MIWFL�wcuE—r VUW1 Cmov.r Qx D •� i` 1 � E I � _ � ma.nw wrau�[asm k z r wxneup aware } ��.rnr�w�h+�w back to agenda City of Port Orchard Stream Augmentation Project Title: PRV Vault Proiect No.: N/A Facility Type: Creek Branch Pipeline Go to CIP Summary Table Anticipated Project Cost: Project Element 6 6" Pipe 6" Pressure Reducing Valve ,dr 0 1 i LF EA $ 41,418 $ 7,800 Subtotal r $ $ 7,800 Constructio ingenc JJnT ft i $ - $ 2,340 o.1 Cost $ - 1 $ 10,140 Gen.&Cornt'r Condit i $ - 1 $ 1,014 r Profit $ - $ 1,521 T44 $ - $ - $ 2,028 $ 14,703 6" Gate Valve 2 EA $ 2,000 $ 4,000 $ 1,200 1 $ 5,200 $ 520 1 $ 780 1 $ 1,040 $ 7,540 Excavation 141 CY $ 25 $ 3,525 $ 1,058 1 $ 4,583 1 $ 458 1 $ 687 1 $ 917 $ 6,645 Valve Box 1 CY $ 15,000 $ 15,000 $ 4,500 1 $ 19,5001 $ 1,950 1 $ 2,925 1 $ 3,900 $ 28,275 $ 57,163 Notes on Cost Estimation: Total cost does not include easement acquisition.Ism- Go to Assumptions Tab Cost Allocation: Project Timing: Project Type Percent Cost Project Element Timing Improvement: 100% $ 57,163 Entire Project #N/A $ •57,163 Capacity: 1 0% $ Repair & Replacement: 10% $ 100% $ 57,163 Total Anticipated Project Cost$ 57,163 Project Location Map: Go to Maps Tab back to agenda City of Port Orchard Stream Augmentation Project Title: Diffuser Station Proiect No.: N/A Go to CIP Summary Table Facility Type: Creek Branch Pipeline Anticipated Project Cost: Project Element 6 lod"unit 6" Pipe Manhole 15 1 LF EA "(s/u]-) $ 160 $ 2,110 Lubt-tmM30 $ 2,400 $ 2,110 $ $ ti ngen 720 633 Cost $ 3,120 $ 312 Contractor r Profit $ 468 T41 0• $ 624 $ 4,524 $ 2,743 $ 274 $ 411 $ 549 $ 3,977 6" Pressure Reducing Valve 1 EA $ 8,190 $ 8,190 $ 2,457 $ 10,647 $ 1,065 $ 1,597 $ 2,129 $ 15,438 6" Backflow Preventer 1 EA $ 5,915 $ 5,915 $ 1,775 $ 7,690 $ 769 $ 1,153 $ 1,538 $ 11,150 6" Flow Meter 1 EA $ 4,278 $ 4,278 $ 1,283 $ 5,561 $ 556 $ 834 $ 1,112 $ 8,064 Excavation 141 CY $ 25 $ 3,525 $ 1,058 $ 4,583 $ 458 $ 687 $ 917 $ 6,645 Valve Box 1 CY $ 15,000 $ 15,000 $ 4,500 $ 19,500 $ 1,950 $ 2,925 $ 3,900 $ 28,275 $ 78,073 Notes on Cost Estimation: Total cost does not include easement acquisition. - Go to Assumptions Tab Cost Allocation: Project Timing: Project Type Percent Cost Project Element Timing Improvement: 100% $ 78,073 Entire Project #N/A $ •78,073 Capacity: 1 0% $ Repair & Replacement: 10% $ 100% $ 78,073 Total Anticipated Project Cost$ 78,073 Project Location Map: Go to Maps Tab back to agenda murraysm�I Opinion of Probable Cost of Construction MCCORMICK VILLAGE PARK SPLASH PAD TREATMENT FACILITY INSTALLATION Project: MCCORMICK VILLAGE PARK SPLASH PAD TREATMENT FACILITY INSTALLATION Submittal: 100%(Class 1 Estimate) Owner: City of Port Orchard, WA Date: 04/08/2021 Item No. Quantity Unit Costs Total Cost Material Labor/Equipment E Total Civil (site work) 1 Demolition and Removals 1 LS $10,000.00 $25,000.00 $35,000.00 $35,000.00 2 Erosion Control 1 LS $5,000.00 $7,000.00 $12,000.00 $12,000.00 3 Construction Entrance 1 EA $1,200.00 $1,300.00 $2,500.00 $2,500.00 4 Temporary fence 1 LS $1,200.00 $1,300.00 $2,500.00 $2,500.00 5 Excavation Export excess materials 1 LS $5,000.00 $15,000.00 $20,000.00 $20,000.00 6 Gravel 7" 551 SF $10.00 $15.00 $25.00 $13,775.00 7 Base Rock4" 315 Ton $18.00 $32.00 $50.00 $15,750.00 8 Concrete 10 CY $1,320.00 $400.00 $1,720.00 $17,200.00 9 Asphalt paving 3" 236 Ton $56.00 $69.00 $125.00 $29,500.00 10 Landscaping (includes tree pruning) 1 LS $5,000.00 $7,500.00 $12,500.00 $12,500.00 11 Overexcavation 466 CY $10.00 $40.00 $50.00 $23,300.00 12 Pre Cast Structure 1 EA $5,500.00 $1,500.00 $7,000.00 $7,000.00 13 Site Piping 1 LS $6,000.001 $18,000.001 $24,000.001 $24,000.00 SubTotal: $215,025 Architectural 14 New Building 1 252 SF $200.00 $200.00 $50,400.00 SubTotal: $50,400.00 Concrete 15 1 Building Foundation I 3 CY 1 $800.00 1 $800.00 $2,400.00 16 SuhTntaln 57 Ann_nn Mechanical 17 Grinder Pump Package 1 LS $5,000.00 $1,250.00 $7,500.00 $7,500.00 18 Media Filter 1 LS $5,000.00 $1,250.00 $7,500.00 $7,500.00 19 Chemical Feed Tanks 1 LS $1,200.00 $300.00 $1,800.00 $1,800.00 20 Chemical Feed Pumps 1 LS $5,000.00 $1,250.00 $7,500.00 $7,500.00 21 Miscellaneous Chemcial Equipment 1 LS $5,000.00 $1,250.00 $7,500.00 $7,500.00 22 Interior Mechancical Piping 1 LS $3,500.00 $1,050.00 $5,460.00 $5,460.00 SubTotal: 23 1 HVAC Equipment I 1 LS 1 $2,500.001 $625.001 $3,125.001 $3,125.00 SubTotal: $3,125.00 Electrical and Control 24 1200 Amp Breaker Sub Panel I 1 LS 1 91.200.001 S300.001 91.500.001 $1.500.00 SubTotal: Material & Labor Total: $309,710 Bonds and Insurance: 2% $6,194 Mobilization: 10% $30,971 Contractor's Overhead & Profit: 15% $46,457 Supply Chain Disruption 14% $43,359 1 $393,332 Owner's Allowance/Contingency: 20% $78, 666 Environmental Mitigation Not included Right of Way Acquisition Not included Construction Cost of WTP Construction Eng./Admin. $0 Estimated Project Cost $472,000 Construction Cost w/sales Tax and Owner's Allowance (minimum range: -10%) $425,000 Construction Cost w/sales Tax and Owner's Allowance (maximum range: +20%) $566,000 back to agenda