Loading...
HomeMy WebLinkAboutRES.2578.11-15-2010BILL NO. 10-159 RESOLUTION NO. ��� A RESOLUTION AUTHORIZING THE CITY MANAGER TO EXECUTE AMENDMENT NO. 1 TO THE GENERAL SERVICES AGREEMENT WITH RJN GROUP, INC., TO PROVIDE ENGINEERING SERVICES FOR PHASE I INFLOW AND INFILTRATION INVESTIGATION, IN THE CITY OF CAPE GIRARDEAU, MISSOURI BE IT RESOLVED BY THE COUNCIL OF THE CITY OF CAPE GIRARDEAU, MISSOURI, AS FOLLOWS: ARTICLE 1. The City Manager, for and on behalf of the City of Cape Girardeau, Missouri, is hereby authorized to execute Amendment No. 1 to the General Services Agreement with RJN Group, Inc., to provide Phase I Inflow and Infiltration Investigation, in the City of Cape Girardeau, Missouri. A copy of the Amendment No. 1 is attached hereto and made a part hereof. PASSED AND ADOPTED THIS 0"' DAY OF / VLA OU4 , 20 0 —001 Harry E. Kediger, Mayor ATTEST: Gayl Amendment Number I Effective Date November 5, 2010 Amendment No. 1 This Amendment is entered into on the effective date noted above pursuant to the "General Services Agreement" between CITY OF CAPE GIRARDEAU, MISSOURI ("Client") and RJN GROUP, INC. ("Consultant"), dated November 5, 2010 ("Agreement"). The Agreement is incorporated herein and forms an integral part of this Amendment. However, in case of conflict, the terms of the Amendment shall control. Services Authorized Client authorizes Consultant to perform the Services described in Exhibit A attached hereto and incorporated herein, which Exhibit A is marked with the above -noted Amendment No. 1 and consists of 6 pages. Compensation To the extent and amount invoiced, Consultant will be compensated for this Amendment on the following basis of reimbursement: 1. For the salary costs of its professional, technical and supporting personnel for the time during which they are directly employed in services covered by this Task, multiplied by a factor of 3.19 to cover overhead and profit. a. Salary costs are defined as the salaries paid for regular time and overtime (including any premium overtime) worked. b. Included in overhead are: i. Provision for applicable annual salary related expenses, including sick leave, vacation pay, holiday pay and other ordinary and customary paid time off, bonuses, the employer's portion of social security, unemployment and other payroll taxes, Employee's Retirement and Benefit Plan contributions, employer's portion of group hospitalization and medical insurance, and the cost of worker's compensation insurance. ii. The salaries of officers, except for technical or advisory services directly applicable to the project. iii. Rent and costs of light, heat and water; equipment depreciation and maintenance cost; costs of office supplies and reproduction of data for our internal use; general communications expense, including local telephone calls and postage; taxes, insurance premiums and license fees; automotive expense and other transportation and travel expense not chargeable to specific contracts; and other miscellaneous costs. Page 1 of 2 City of Cape Girardeau Amendment No. I 2. For the following direct costs: a. Travel, subsistence, and incidental expenses of personnel while traveling in connection with this Task. b. Transportation by passenger automobiles that RJN Group, Inc. supplies intermittently in connection with this Amendment, at the prevailing federal mileage reimbursement rate. All costs of owned, leased or rented passenger vehicles assigned to this Amendment and car allowances granted to management and supervisory personnel are reimbursable. Reimbursement for the cost of special types of vehicles and flow metering rates will be at rates to be mutually agreed upon when such vehicles and flow metering rates are required. c. Reproduction of drawings, photographs, maps, charts and reports which are prepared for the Client's periodic or interim review and also the cost of the reproduction which constitute the delivery of services. d. Wire and wireless communication of messages and data in connection with this Amendment. e. Insurance required by Client in addition to the coverage or in excess of the limits normally carried. E Subcontracted services such as, but not limited to, borings, surveys, testing and computing services, if required in the performance of this Amendment. 3. Estimate of Cost of Consultant's Services a. Consultant estimates that the total cost of the services will be $257,770. Consultant will consult with the Client and obtain the Client's consent before its costs exceed this estimate. Consultant does not guarantee, however, that the cost of the services required by this Agreement will not exceed the estimated amount. CITY OF CAPE IC NAME: TITLE: C.v DATE: City of Cape Girardeau Amendment No. 1 U, MISSOURI RJN GROUP, INC. BY: V&�a C 6� NAME: Lisa S. Douglas, P.E. TITLE: Principal DATE: November 5, 2010 Page 2 of 2 PROPOSAL FOR ENGINEERING SERVICES CAPE GIRARDEAU PHASE I INFLOWANFILTRATION INVESTIGATION EXHIBIT A SCOPE OF SERVICES A. SCOPE OF SERVICES The Services to be provided under this Proposal shall consist of a Phase I inflow/infiltration (1/I) investigation and report to complement the City's capacity, management, operations, and maintenance (CMOM) and new wastewater treatment plant efforts. Phase I will be timed in accordance with the City's needs and be tailored to match the requirements and expectations of the Missouri Department of Natural Resources. Phase I will consist of: - flow monitoring - global positioning system (GPS) verification survey - hydraulic model analysis - lift station operational review. SCOPE OF WORK: A.1.1 Project Administration RJN Group, Inc. (Engineer) shall coordinate the overall work of the project to include all field inspections and engineering analysis. The Engineer shall conduct weekly meetings with appropriate City staff and submit monthly progress reports once a project kickoff meeting is completed. The Engineer shall develop a schedule and Work Plan for Phase I, along with a general Traffic Control Plan for primary arterials. These documents, as well as the calibration methods and procedures for flow monitors, will be presented by the Engineer at the kickoff meeting. A.1.1.1. Historical Data Review RJN will review the existing system maintenance records and any trouble call reports. We will also review historical sanitary sewer overflow reports, former investigation data, and operations data for pump stations. This data will assist in prioritizing study areas, to determine investigation methods, and consider alternative inspection methods to overcome any identified challenges. An evaluation of data sources required by and available from Exhibit A Page 1 of 6 the City's Cityworks Computer Maintenance Management System (CMMS) will be performed by the Engineer's GIS / Information Technology personnel. A.1.2 Site Selection Prior to beginning the flow monitoring project, the Engineer will verify sewer line interconnectivity and sewer flow direction at various locations across the collection system to confirm proposed sewer shed delineations and understand impact of the sewers upstream of proposed flow monitoring locations. The Engineer shall conduct field investigations to verify the suitability of each potential monitoring location. A.1.3 Flow Monitoring Services —Installation, Maintenance, Removal Prior to installing flow monitors, the Engineer will develop a flow monitoring plan. The flow monitoring plan will include the preliminary monitoring sites selected from a review of the City's existing sewer maps. Approximately 20 sites will be based on sub -shed basin distribution. Areas requiring special attention or split -flow conditions may require additional flow monitors. Potential flow monitoring sites will be identified with consideration given to basin size, evidence of surcharging, overflow locations, projected maintenance activities, and other factors. Potential and alternate sites will be inspected and the site hydraulics evaluated. The Engineer shall conduct field investigations to verify the suitability of each potential monitoring location. The field investigations will verify sewer line interconnectivity and sewer flow direction in various locations across the collection system and in the proposed meter locations. The Engineer shall prepare a site investigation sheet for each selected site and shall submit to the City for their records. A total of 20 meter sites are included in this proposal. After approval of the recommended sites, the Engineer shall install and maintain the meters for up to a 60 -day period. The Engineer shall also select rain gauge monitoring sites for up to four locations and install continuous -recording rain gauges. Flow monitoring will be performed utilizing 20 America Sigma or equal monitors capable of measuring both depth and velocity of flow. A total of four tipping -bucket rain gauges will be used for the study. The tipping -bucket gauges will be installed to obtain rainfall distribution data. It is recommended this phase of work be performed March / April 2011. A.1.4 Flow Data Management During the flow monitoring study, flow data will be continually reviewed and analyzed in order to assess the accuracy and quality of the data. Exhibit A Page 2 of 6 A.1.5 Flow Data Analysis A.1.5.1 Rainfall Relationship Adequate rainfall will be necessary to establish the relationship between peak inflow and rainfall intensity. This relationship will be used to determine the impact on the collection system during wet -weather and high -groundwater conditions. A correlation of flow and rainfall intensity will be made using the area -coefficient method of analysis. It is anticipated that a minimum of three storm events that do not cause surcharging of the collection system will be recorded during the 60 -day monitoring period. Data from the continuous -recording rainfall gauges will be used to establish the intensity of rainfall and duration for each storm event. The Thiessen Method for rainfall distribution analysis will be used. For each monitoring site, data developed as part of the analysis will include: - Average dry -weather diurnal curve flows for weekdays and weekends - Rainfall / wet -weather wastewater flow correlations for selected storm events during the monitoring period - Design peak inflow rate at the design storm event - Capacity analysis at the monitoring sites A.1.5.2 Based on the flow data analysis, the various basins will be ranked according to their I/I contribution. The I/1 ratings shall be used to develop a prioritization for each basin. Using the various rankings, the Engineer shall provide the City of Cape Girardeau with a recommendation for the basins in which to perform sanitary sewer evaluation survey activities. A.1.6 GPS of Manhole/ System Mapping Updates A.1.6.1 GPS of Manholes A.1.6.1.1 Manholes on sewer lines with a diameter of 12 inches or larger will require manhole X, Y, Z coordinates to within sub -centimeter accuracy (0.1 foot for horizontal measurements and 0.2 foot for vertical measurements). Therefore, rim and invert elevations for Phase I will be required for approximately 917 manhole structures. A.1.6.2 During the course of Phase I, it is anticipated that some revisions will be made to the City's sewer facilities maps to correct sewer flow direction and interconnectivity discrepancies. This updated information will be furnished to City at the conclusion of the Exhibit A Page 3 of 6 project. In addition, up to 40% of the 917 manholes, approximately 370, shall be GPS surveyed by the Engineer for verification of the City's elevation data. A.1.7 Capacity Analysis (Hydraulic Network Development) A hydraulic model network will be developed for all sewer lines 12 inches in diameter and larger and up to four major lift stations. This involves approximately 240,000 linear feet of 12 -inch or larger lines. It is anticipated that the InfoWorks Model Software will be used. For Phase I, the hydraulic model analysis will be used to identify collection system capacity issues only. For Phase II (not part of this scope), the model can be used to facilitate sewer improvement design scenarios in each priority basin. A.1.8 Hydraulic Modeling A.1.8.1 The Engineer will calibrate the model against the flow data from monitoring activities for both dry- and wet -weather conditions and modify model parameters until computer -calculated peak flows and travel times are in acceptable agreement with monitored data. A.1.8.2 In consultation with the City of Cape Girardeau, define sewer design criteria for minimum slopes, minimum velocity, definition of sewer overloading, and the percent of overload allowed before relief will be considered. A.1.8.3 Using the calibrated computer model, the Engineer shall perform a system analysis for existing dry -weather conditions. Normal wastewater production and peak infiltration flow components versus available pipe capacity will be analyzed to determine if any potential dry -weather hydraulic capacity problems currently exist. A.1.8.4 Perform system hydraulic analysis for one selected peak flow condition. Determine as required in the model the peak flows, the percentage of capacity used, and an estimated relief sewer size and planning cost. A.1.8.5 Summarize the results of the hydraulic modeling of the existing collection system as part of the final report. A.1.9 Lift Station Operational Review A.1.9.1 The Engineer will perform an assessment of the performance of up to four significant pump stations in Cape Girardeau's collection system to determine if they are capable of providing reliable service for design operating conditions. A.1.9.2 The Engineer will review and use the following data sources: monitored flow and estimated influent flow rates, along with estimated pumped volumes; pump drawdown testing data to confirm pumping capacities; pump operating time from Exhibit A Page 4 of 6 supervisory control and data acquisition (SCADA) (or run time meters and / or pump start counters); and records of pump and pump station failures. A.1.9.3 This information will be analyzed and used to identify capacity and/or reliability improvements required, conduct root cause failure analyses, and schedule preventive and predictive maintenance activities. A.1.9.4 The Engineer will develop data for the lift stations including the following information: pump station name; number of pumps and nominal capacity of each; results of drawdown testing to confirm single- and multiple -pump capacities; current minimum, average, and maximum influent flow rates (as determined by flow monitoring, hydraulic model, or estimated from service area statistics with appropriate peaking factor); future minimum, average, and maximum influent flow rates after completion of any planned Capital Improvements Program (CIP) project(s); determination if reliable peak flow capacity is provided currently and on completion of CIP project(s); backup power supply (second source from different substation, on-site generator, or provision for portable generator); provisions for portable pumping equipment; SCADA availability; suitability for emergency -hauled waste pumping; root cause of historical pump or pump station failures; and other information (wet well dimensions, duration test results, etc.). A description of field investigations, engineering analysis, and recommended action to improve the lift stations will be included in the final report. A.1.10 Data Management / Quality Assurance A.1.10.1 Data management will focus on turning the infrastructure condition, performance, and maintenance data into useful actionable information. Appropriate data collected during field activities will be integrated with the City of Cape Girardeau's global information systems (GIS) system and Azteca's Cityworks. Data collected during field investigation will be maintained in a database that is compatible with GIS software, the City's current sanitary sewer inventory and modeling software, and Cityworks CMMS. A.1.10.2 Discrepancies between the City of Cape Girardeau's GIS sewer facilities information and actual field conditions will be recorded and periodically delivered to the City. A.1.11 Final Report and Other Submittals A.1.11.1 Working in conjunction with the City, an analysis will be performed to determine the least -cost plan for system capacity improvements. The system hydraulic model will be used to evaluate the needed improvements required for the selected design condition considering growth and removal of defects identified in the field investigations. Exhibit A Page 5 of 6 A.1.11.2 A capital improvement plan for the City's collection systems will be developed to provide a staged priority schedule for Phase II services, a rehabilitation plan, capacity improvements, and budget costs for recommended projects. A.1.11.3 The report will consist of a narrative discussion of the hydraulic analysis, lift station operational review, field investigations, exhibits, tables, and supporting information. The report will include findings, conclusions, and recommendations. It shall be organized and presented in meaningful graphics, figures, and tables. The report shall include the flow analysis and hydraulic model analysis including recommendations for further investigation. A basin ranking will be presented, along with the recommended rehabilitation and associated cost based on the review of the television tapes. A.1.12 Budget of Scope The following details budgetary fees per task. Project shall be invoiced according to time - and -materials rates as established in the General Services Agreement for all scoped items except the specialized equipment daily unit rates for I/I investigation work vans ($75/day) and flow meters ($56/day), for a not -to -exceed cost of $257,770. A.1.13 Project Completion All scope of work items as defined in Exhibit A will be completed by September 1. 2011. - r. •, -- END -- Exhibit A Page 6 of 6 Quantity Unit Total Budget Cost Project Administration 1 Lump Sum $ 15,280 Site Selection 20 Each 6,640 Flow Metering Meter Installation 20 Each 7,620 Meter Maintenance (60 Days) 1,200 Meter -days 67,200 Meter Removal 20 Each 4,020 Data Analysis 1 Lump Sum 35,000 Rainfall Monitoring 240 Meter -days 6,000 Map Field Verification 1 Lump Sum 6,500 GPS / Mapping 370 Each 18,130 Lift Station Evaluation 4 Each 7,600 Hydraulic Modeling 1 Lump Sum 65,000 Report 1 Lump Sum 18,780 TOTAL $257,770 A.1.13 Project Completion All scope of work items as defined in Exhibit A will be completed by September 1. 2011. - r. •, -- END -- Exhibit A Page 6 of 6