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HomeMy Public PortalAboutTO 2022-04 Rapid Rate Infiltration Basin Expansion WWTP - RIBS Prof Serv - JacobsTASK ORDER 2022 - 04 THIS TASK ORDER IS ISSUED PURSUANT TO THE STANDARD MASTER AGREEMENT FOR PROFESSIONAL SERVICES DATED MAY 03, 2021 (AGREEMENT), FOR THE CITY OF CRESTVIEW, FLORIDA, WHICH IS INCORPORATED HEREIN BY THIS REFERENCE, WITH RESPECT TO Professional Engineering and Consulting Services for the Rapid -Rate Infiltration Basin Expansion Preliminary Design and Permitting Article A. Purpose The City of Crestview (City) has seen significant population growth in recent years and that growth has created the need to expand and build new residential communities. This growth has led to an increase in influent flow at the Crestview Wastewater Treatment Plant (WWTP). In addition, planned expansion of the SR 85 bypass road and future East-West corridor will be constructed on the existing effluent spray field thus reducing overall effluent disposal capacity at the WWTP. As part of the Phase IV WWTP Expansion and RIBs project, CH2M HILL Engineers, Inc., a wholly -owned subsidiary of Jacobs Engineering Group (Jacobs) designed the current RIBs site (5 RIBs with 0.63 million gallons per day (mgd) permitted capacity) to be expanded by the construction of RIB No. 6 as required by area growth, influent flows and property acquisition. The existing RIB system was put into service in July 2014. However, the City was not able to acquire the land parcel on which RIB No. 6 was to be constructed. Jacobs will be initiating a field study on the existing RIB siteto collect additional data to support a substantial modification of the current operating permit to increase the permitted disposal capacity of the RIB system. The City has identified a parcel of land located northeast of the WWTP site (RIB 6 property) as another potential reuse disposal site. The construction of RIBS on this property is required to meet the City's rapidly growing wastewater disposal needs. The purpose of Task Order 2022-04 is to authorize and direct Jacobs to proceed with the professional engineering and consulting services for site -specific evaluations, preliminary design and permitting of a new infiltration system on the RIB 6 property. Article B. Scope of Services: Project Understanding A forested, vacant land parcel adjacent to the Crestview WWTP, referred to herein as the RIB 6 property, has been identified as a potential site for an infiltration system. See Figure 1 for the location and boundaries of the parcel to be evaluated. The parcel is 48.7 acres in size and is similar (topography and soil types) to the City's existing RIB site located south of the RIB 6 parcel. EXISTING SPRAY FIELD FIGURE 1 - CRESTVIEW WWTP AND RIB 6 SITE PLAN This project will include site -specific field investigations of the parcel, including, surface and groundwater sampling and hydrogeologic conditions. A hydraulic loading evaluation and groundwater modeling will also be performed to provide data required to prepare the preliminary design documents and submit an application for a Florida Department of Environmental Protection (FDEP) construction permit. The scope of services provided with this task order is outlined in detail below. Task 1 - Site Investigations Site -specific investigations will be required to obtain the data needed to evaluate site suitability, capacity, design requirements, and potential impacts of an infiltration system. The site -specific investigations, which will be completed as part of this task, include a general assessment of site characteristics, a hydrogeologic investigation, and surface water survey. Jacobs will conduct a hydrogeologic investigation to evaluate the capability of the proposed project site to perform successfully on a long-term basis. Information from the investigation will also be used to develop a numerical groundwater flow model of the proposed RIB system. Jacobs will utilize the monitoring wells installed in Task Order 2022-01 to perform the hydraulic testing described in the subtasks below. Refer to Figure 2 for the type and locations of the borings and monitoring wells installed. This information will be used to evaluate the proposed stand-alone RIB system within the RIB 6 parcel as described in Task 2 below. 2 Legend • W3 Space ticausp ■ irtfttraton Toni aura Tc!n c' rj P.oe.ztrad Atzerc _m • 'pWv artt Tar Nary Syllrg Wefts GShTst • IMr,gntd i.,; (vora y Got +ts v Cr G) a W,rgecd a;. µ.<ny ttL Tent SSaors Worts (W/81 Tithes. 1. Sctames Aersel Ircugery, Topegr , • £SRI 2'2t - Parcels. Okadoe:a County Property noCrstmrr 21321. 110 LL' :a0 Figure 2 Drilling SOW - Field Study General Iiap Wit:gard infiltration System Field Investgat"srsn City of Cre^rview WWTF, FL Jacobs 3 Task 1.1 - Hydraulic Testing One, 20 -day hydraulic loading test will be conducted to estimate the surface and near - surface infiltration capacity of the soils. The City will construct a shallow basin approximately 2 feet deep with a bottom area of approximately 625 square feet (25 feet by 25 feet) and impermeable side walls using a backhoe.. The loading test will be conducted by maintaining a minimum of 0.5 feet of water in the test basin for the 20 -day test period while recording the flow rate, ponded water depth, and rainfall depth. The loading test period may be shortened if steady-state groundwater elevations beneath the basin are achieved prior to the end of the 20 -day loading period. The initial flow rate into the test basin is expected to be approximately 40 gpm with a steady-state rate of less than 10 gpm. The basin will be constructed in the immediate vicinity of the 2 -inch diameter groundwater wells (WTB series) shown in Figure 2. Jacobs will continuously monitor water levels in up to 10 strategically placed monitoring points 5 days prior to the infiltration test, during the test, and for an additional 7 days after the loading test has ceased, resulting in continuous monitoring of approximately one month. Source water for the basin test will be obtained from the Crestview WWTP in the vicinity of the sludge drying beds via a temporary, 1 -1/2 - inch Schedule 40 PVC, above -ground pipeline. The temporary pipeline will be installed by Jacobs O&M group with an estimated maximum length of 1,200 feet. Slug testing will be conducted using selected 2 -inch diameter groundwater wells previously installed. A minimum of five slug tests will be performed. Task 1.2 - Data Reduction The following information will be developed from the available published and site -specific data gathered in Task 1.1 as well as collected in Task Order 2022-01 and will be included in the engineering report: • General site description, including various property owners and boundaries in the vicinity of the infiltration system. • Geologic information from available literature including information concerning sinkhole features within one mile of the site • Identification, extent, and characterization of shallow aquifer horizons and potential aquitard (low -permeability) horizons underlying the site • Water table elevations at the time of the hydrogeologic investigation • Surface water classified pursuant to Chapter 62-302 that are located within one mile of the site will be located on a map and described with respect to classification, average elevation, uses, and approximate distance from the site. Jacobs will also use existing map data and the wetlands survey conducted during the planning phase of this project under Task Order 2022-01 to identify the extent of wetlands on the site. • Direction and rate of existing groundwater flow • Information on existing water supply wells (and monitoring wells, as appropriate) within one mile of the site. This information will be compiled from existing data from the Northwest Florida Water Management District, FDEP, and Okaloosa County records. 4 Task 1.3 - Surface Water Background Sampling Based on Jacobs's recent experience permitting infiltration system projects in Northwest Florida, it is expected that the FDEP will be concerned about potential impacts to adjacent streams and wetlands from the loading of reclaimed water to the infiltration system. Therefore, Jacobs will collect one grab sample from each surface water body located on the site and within one -quarter mile of the site. The samples will be shipped to a testing lab for water quality and characterization testing to provide initial background data on the water quality of these streams. Single grab samples will be collected at approximately WTS-2 as shown on Figure 2. Another grab sample will be collected at the current RIB permit background sampling point SW -7 located at intersection of Juniper Creek and powerline right-of-way northeast of the proposed infiltration system site. Deliverables • Site Investigation Technical Memorandum Task 2 - Hydraulic Loading and Groundwater Mounding Analysis Jacobs will perform a groundwater mounding analysis of the proposed RIBs after completion of Task 1. The purpose of this analysis is 1) to optimize the infiltration system design and layout, estimate average annual recharge to groundwater and 2) evaluate the long-term effects of loading on the surficial aquifer in the vicinity of the site. The mounding analysis will be performed using the hydrogeological and geotechnical field data and other relevant data collected in Task 1. These data will be used to construct and calibrate a numerical model of the groundwater system. The numerical model will be developed based on the existing steady state groundwater flow model for the Crestview RIBs site. The domain of the model will be expanded, and the model will be calibrated to the groundwater elevations generated from the groundwater level measurements collected in Task 1. The model will be calibrated to both steady state and transient conditions using site -wide groundwater elevation measurements and groundwater elevation measurements collected during load testing. The calibrated groundwater model will then be used to conduct simulations of various infiltration system layouts and loading scenarios to optimize basin number, location, size, shape, bottom area, and distribution to optimize steady-state disposal capacity. The effect of transient (seasonal) loading rates will then be evaluated. This will be an iterative process and will include refinement of the layout. Jacobs will prepare a technical memorandum presenting the results of the groundwater mounding analysis and selected infiltration system. This information will be incorporated into the PER. Deliverables • Hydraulic Loading and Groundwater Mounding Analysis Technical Memorandum Task 3 - Evaluation of Long -Term Environmental Impacts Information developed in the previous TMs will be used to evaluate the long-term impact of the proposed project on the environmental resources of the area including: 5 • Changes in the water table elevations due to natural fluctuations and the proposed hydraulic loading rates at each site • Prediction of the rate and direction of movement of the applied water • Justification and documentation of using buffer zone minimum distance criteria and selection of hydraulic loading rates • Emergency overflow protection and operation during extreme wet weather events • Design contingencies • Impact on public health, safety and welfare. Deliverables • Long -Term Environmental Impacts Evaluation Technical Memorandum Task 4 - Preliminary Design During the preliminary design phase Jacobs will further develop the infiltration system conceptual site plan based on results of field investigations and groundwater mounding analysis. The preliminary design will include 30% design plans and a brief TM to identify the basis of design. The design plans will consist of civil, process mechanical, structural, and instrumentation and controls for new rapid -rate infiltration basins, effluent disposal pump station and conveyance piping. Jacobs will also develop a preliminary engineering report (PER) for the recommended infiltration system based on results of the field investigations and groundwater mounding analysis. The PER will be prepared using data, end -products, and conclusions from all previous Tasks and TMs prepared for this project along with previous Tasks and TMs prepared under Task Order 2022-01 and will include an executive summary. An operations and maintenance (O&M) plan for the proposed facilities will also be developed. This will include a schedule for basin loading based on the overall loading rate determined for the site and maintenance activities. Additionally, a ground water monitoring plan will also be prepared. Deliverables Jacobs will provide the following deliverables as a result of this task: • One deliverable of the PER (two hard -copies and three external thumb drives) that is a compilation of technical memorandums prepared including: • TM's from Tasks 1 - 3 of Task Order 2022-01: • Threatened and Endangered Species Survey TM • Conceptual Design TM • TM's from Tasks 1 - 4 of this Task Order: 6 • Site Investigation TM, which will include results and analyses of Near -Surface Soils Investigation, Hydrogeologic Investigation, and Surface Water Background Sampling • Hydraulic Loading and Groundwater Mounding Analysis TM • Long -Term Environmental Impacts Evaluation TM • Preliminary Design Drawings • Preliminary Design TM • 0&M Plan Technical Memorandum, which will also include a proposed groundwater monitoring plan for the infiltration system site. Task 5 - Wastewater Permit Application Jacobs will prepare the application for a wastewater permit to authorize the construction and operation of the RIB 6 Property Reclaimed Water Infiltration System for the Crestview WWTP. One pre -application meeting will be held with FDEP to ensure cohesion and to allow FDEP to provide guidance upfront. Jacobs will fill out and complete FDEP Forms 62-620.910(1) and 62-620.910(2) and compile the preliminary engineering report for the rapid -rate infiltration system. The TMs prepared for the previous tasks will be compiled into a PER. An executive summary will also be prepared and included in the PER. The PER will summarize the field data, present the groundwater mounding analysis, provide a conceptual site plan for proposed onsite facilities, present a proposed groundwater monitoring plan, and evaluate the long-term impact of the proposed project on environmental resources of the area. The permit application and associated support documents will be prepared as a single WWTP permit modification application for the RIB 6 infiltration system facilities, WWTP improvements, and conveyance facilities (pump stations and pipelines) to transfer the reclaimed water to the new infiltration system site. Jacobs will provide the City with two (2) hard copies and (3) external thumb drives containing PDF copies of all submitted information. Jacobs will provide the FDEP with one (1) hard copy and an electronic copy of the wastewater permit application package. This task assumes that the City will submit the permit application fee to FDEP. Jacobs will provide written responses for up to two reasonable requests for additional information submitted by the FDEP to the City. The requests for additional information from the FDEP agencies are sometimes difficult to anticipate, and the process is open to review by several outside agencies, which can raise questions about new issues. Consequently, additional services may be required after initial reviews of submittals are made. Additional tasks may also be added to the scope of work, as they are required during the permitting process, as requested by the City. Deliverables Jacobs will provide the following deliverables as a result of this task: • FDEP permit application package 7 Assumptions and Specific Conditions The following assumptions have been taken into consideration in the preparation of this Scope of Services and compensation. These assumptions are based on the project scope, which is to deliver to the City of each of the following: Two (2) hard copies and an electronic PDF copy of the PER, which will include all technical memorandums; two (2) hard copies and three (3) external thumb drives containing the complete wastewater permit application materials for the infiltration system site. Should deviations from these assumptions be required to deliver the services described in this scope of services, the scope of work and compensation shall be modified accordingly and approved by the City in writing before any changes to this scope of services can be implemented or delivery of the original scope of services completed. • Field analyses and evaluations will be performed on the RIB 6 parcel with an area of 48.7 acres. • The level of effort for these Tasks are based on modeling and conceptual engineering of one infiltration system method. • Jacobs will use existing parcel boundary lines and topographic data available from the survey performed by Jacob's subcontractor, Okaloosa County GIS and other sources to prepare the design drawings. • WTS Wells 1 and 2 will be removed by Jacobs after the completion of the Task 1 field study activities. All other WTG and WTB wells will be abandoned during construction of the infiltration system and the abandonment cost is not included in this task order. • The City will submit the permit application fee to FDEP. • Surface water sampling activities will be conducted by the same vendor (The Water Spigot) that currently conducts quarterly permit compliance groundwater and surface water sampling for the Crestview WWTP. • Jacobs will reasonably rely upon the accuracy, timeliness, and completeness of information gathered and or provided by governing agencies, the City and other industry sources. • The information gathered from the soil borings and site investigations in this task will be relied upon to permit and prepare the design and ready for bid documents. The site investigation will include sampling and monitoring at various locations across the site; however, actual soil and groundwater characteristics may vary between sampling locations and times. Because of the inherent uncertainties in subsurface evaluations, unanticipated underground conditions may be encountered that are outside Jacobs control and therefore may not be held liable for unforeseen changes required during construction. 8 Article C. Project Schedule Work will begin upon execution of this task order. A preliminary milestone schedule is shown below. TABLE 1 - PRELIMINARY SCHEDULE Rapid -Rate Infiltration Basin Expansion Preliminary Design and Permitting Task Projected Completion Date Task 1 - Site Investigations Task 2 - Hydraulic Loading and Groundwater Mounding Analysis Task 3 - Evaluation of Long -Term Environmental Impacts Task 4 - Preliminary Design Task 5 - Wastewater Permit Application - Submit draft permit application & PER for City Review - Submit final permit application & PER to FDEP Within 11 weeks of NTP Within 8 weeks of completion of Task 1 Within 2 weeks of completion of Task 2 Within 15 weeks of completion of Task 3 Within 3 weeks of completion of Task 4, approximately 36 weeks from NTP Within 2 weeks of receiving all review comments from the City; approximately 38 weeks from NTP 9 Article D. Compensation As compensation for providing the services described in Article B. Scope of Services of this task order, the City shall pay Jacobs in accordance with Section 5 of the Agreement, on a time and material basis with a not -to -exceed amount of $346,300. The estimated breakdown of fees is shown in Table 2 below. TABLE 2 - ESTIMATED FEE SUMMARY Rapid -Rate Infiltration Basin Expansion Preliminary Design and Permitting Task Estimated Fee Amount Task 1 - Site Investigations $112,800 Task 2 - Hydraulic Loading and Groundwater Mounding Analysis $79,600 Task 3 - Evaluation of Long -Term Environmental Impacts $16,400 Task 4 - Preliminary Design $79,200 Task 5 - Wastewater Permit Application $23,700 Field Work Travel Expenses $6,000 Field Work General Expenses $2,500 Data Collection Equipment Rental Allowance $24,000 Surface Water and Groundwater Sample Laboratory Analysis $2,100 Al lowance Total $346,300 10 Article E. Authorized Representatives The Authorized Representatives designated below are authorized to act with respect to Task Order 2022-04. Communications between the parties and between Jacobs's subcontractors shall be through the Authorized Representatives: For the City of Crestview, Florida For Jacobs Name: Wayne Steele Name Scott Jernigan Address: P.O. Drawer 1209 Crestview, Florida 32536 Address: 25 W. Cedar Street, Suite 350 Pensacola, Florida 32502 Telephone: (850) 682-6134 Telephone: (850) 941-7282 Article F. Authorization: Task Order 2022-04 is effective as of 9 --.1?, , 2022 Accepted for Cit by: Accepted for Jacobs by: ,tom' ame: J.B. Whitten Name: Nick Freeman Title: Mayor Title: Principal Project Manager 11