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C2011-212 - 6/21/2011 - Approved
CITY OF CORPUS CHRISTI AMENDMENT NO. 3 CONTRACT FOR PROFESSIONAL SERVICES The City of Corpus Christi, Texas hereinafter called "City ", and PIPELINE ANALYSIS. LLC agree to the following amendments to the Contract for Engineering Services for Sanitary Sewer Overflow Initiative „ {SSOI) Program as authorized and administratively amended by: Ori inal Contract August 24, 2010 Motion No. M2010 -195 $96,101.00 Amendment No. 1 October 11, 2010 Administrative Approval $48,548.00 Amendment No, 2 December 14, 2010 Administrative App roval $29,176.00 EXHIBIT "A ", SECTION 1. SCOPE OF ENGINEERING SERVICES, PART A. BASIC SERVICES, shall be modified by the additional paragraphs shown below: 8. City -wide Hydraulic Model - Amendment No. 3 to this contract will implement the TCEQ SSO Initiative Plan for Oso, Broadway, Greenwood, Allison, Whitecap and Laguna Madre Service Areas. A hydraulic wastewater system model will equip the wastewater department with the tools for analyzing system conveyance capacities, bottlenecks, and potential overflow locations. The hydraulic model will facilitate system analysis, aid in development of system improvements, produce informational maps /exhibits, and will predict the system's response to future improvements. The hydraulic model will enable the City to assess and predict potential capacity requirements and develop least cost strategies to optimize system performance. The major tasks included in the city -wide project scope for this amendment are: • Data Collection and Review • Model Development and Data Conversion • Model Calibration • Existing System Analysis • Future System Analysis • Wastewater Flow and Rainfall Monitoring • Manhole Inspection (4,558 manholes) • Topographic Survey - Elevation Data (4,998 manholes) • Final Engineering Report • Training City Staff Pipeline Analysis 2411 -21.2 M2011 -133 06/21/11 H: IHOMEIVELMAPIGENIWASTEWATER 1E19415 SSOhAMENDMENT NO. 311 AMENDMENT NO. 3.DOC INDEXED Page 1 of 3 M EXHIBIT "A ", SECTION 3. FEES, shall be modified as follows: All other terms and conditions of the August 24, 2010 contract between the City and Engineer, and of any amendments to that contract, which are not specifically addressed herein shall remain in full force and effect. CITY OF CORPUS CHRISTI B I Y Juan Peral s, Jr., P. E. Date Assistant City Manager RECOMMEN By ;& Pee Anaya, P. E., Date Director of Engineering Services ATTEST By Armando Chapa, City S retary PIPELINE ANALYSIS, LLC TBPE Firm Reg. No. F -6538 BY James s, Jr., P. Date President 13661 Jupiter Road, Suite 307 Dallas, TX 75238 (800) 637 -0164 Office (972) 479 -0659 Fax kall— I3 AUTHORIZED lY WWII. _..JQ �/�. 0}Hi 1i w...........• . SE CRE TARY P. Page 2 of 3 H: IHOMEIVELMAP5GEN5WASTEWATER1E10415 SSOILSMENDMENT NO. 34AMENDMENT NO. 3.000 ORIGINAL AMENDMENT AMENDMENT AMENDMENT CONTRACT NO.1 NO.2 NO.3 TOTAL 1 Preliminary Phase $17,678.00 $0.00 $0.00 $0.00 $17,678.00 CMOM Self -Audit Interviews 2 including SSOI and 303(d) 59,553.00 0.00 0.0 0 0.00 59,553.00 3 CMOM Self -Audit Pre -Final and 8,963.00 0.00 0.00 0.00 8,963.00 Final Report Submittal 4 SSO Initiative Pre -Final and Final Report Submittal 9 0.00 0.00 0.00 9,907.00 5 Greenwood SSOI Plan 0.00 21,225.00 0.00 0.00 21,225.00 6 Broadway SSOI Plan 0.00 27,323.00 0.00 0.00 27,323.00 7 Allison, Whitecap, Laguna Madre 0.00 0.00 29,176.00 0.00 29,176.00 SSOI Plan 8 City -wide Hydraulic Model 0.00 0.00 0.00 1,989,103.00 1,989,103.00 Total Authorized Fee $96,101.00 $48,548.00 $29,176.00 $1,989,103.00 $2,162,928.00 08/24/10 10/11/10 12/14/10 05/24/11 M2010 -195 Admin Approval Admin Approval M2011- All other terms and conditions of the August 24, 2010 contract between the City and Engineer, and of any amendments to that contract, which are not specifically addressed herein shall remain in full force and effect. CITY OF CORPUS CHRISTI B I Y Juan Peral s, Jr., P. E. Date Assistant City Manager RECOMMEN By ;& Pee Anaya, P. E., Date Director of Engineering Services ATTEST By Armando Chapa, City S retary PIPELINE ANALYSIS, LLC TBPE Firm Reg. No. F -6538 BY James s, Jr., P. Date President 13661 Jupiter Road, Suite 307 Dallas, TX 75238 (800) 637 -0164 Office (972) 479 -0659 Fax kall— I3 AUTHORIZED lY WWII. _..JQ �/�. 0}Hi 1i w...........• . SE CRE TARY P. Page 2 of 3 H: IHOMEIVELMAP5GEN5WASTEWATER1E10415 SSOILSMENDMENT NO. 34AMENDMENT NO. 3.000 APPROVED AS TO FORM By A°. 5- f 2- -fl Assistan ty Attorney Date Project Number: E10015 Funding Source: 550950 -4504- 00000- E10015 Encumbrance Number: E10015API Page 3 of 3 H: IHOMEIVELMAPIGENIWASTEWATER1E14015 SSOIYAMENDMENT N0.34AMENOMENT N0. 3.DOC PIPELINE ANALYSISU WASTEWATER COLLE ION ENGINEERS April 29, 2011 Dan Biles, P.E., PMP Assistant Director Engineering Services 1201 Leopard Street Corpus Christi, Texas 78401 (361) 826 -3729 Dear Mr. Biles, 1115 Main Street Garland, Texas 75040 800 - 637 -0164 RE: Contract Amendment No. 3 Sanitary Sewer Overflow Initiative Plan Development and CMOM Self -Audit City -Wide Sanitary Sewer Hydraulic Model (Project No. E10015) The Texas Commission on Environmental Quality (TCEQ) has developed a voluntary Sanitary Sewer Overflow (SSO) outreach initiative (SSOI) to assist municipalities with addressing SSO's that might escalate to such a degree as to cause a negative impact on human health and safety or the environment. Participation in this outreach initiative is entirely voluntary. City of Corpus Christi have reviewed the requirements of the initiative and met with TCEQ staff to discuss details of the initiative for the Oso service area. As a result of this meeting and staff review, the City of Corpus Christi has agreed to participate in the TCEQ SSO outreach program. The prime contract will provide the technical assistance necessary to prepare a SSO Initiative Plan for the Oso service area and a city -wide CMOM (Capacity, Management, Operation & Maintenance) Self -audit to meet TCEQ and proposed EPA regulations. The original contract included the development of a SSO Initiative Plan for the Oso Service Area and Amendment No.l authorized Pipeline Analysis to incorporate the Broadway and Greenwood Service Areas into the SSO Initiative program. Amendment No. 2, in anticipation of future TCEQ actions, included the Allison, Whitecap and Laguna Madre Service Areas. Amendment No. 3 implements the TCEQ SSO Initiative Plan with the development of a comprehensive city -wide hydraulic model of the wastewater collection system. Amendment No. 3 to this contract will implement the TCEQ SSO Initiative Plan for Oso, Broadway, Greenwood, Allison, Whitecap and Laguna Madre Service Areas. A hydraulic wastewater system model will equip the wastewater department with the tools for analyzing system conveyance capacities, bottlenecks, and potential overflow locations. The hydraulic model will facilitate system analysis, aid in development of system improvements, produce informational maps /exhibits, and will predict the system's response to future improvements. The hydraulic model will enable the City to assess and predict potential capacity requirements and develop least cost strategies to optimize system performance. AMEND. NO. 3 EXHIBIT "A" Pa e 1 of 35 1 y The major tasks included in the city -wide project scope for this amendment are: • Data Collection and Review • Model Development and Data Conversion • Model Calibration • Existing System Analysis • Future System Analysis • Wastewater Flow and Rainfall Monitoring • Manhole Inspection (4,558 manholes) • Topographic Survey - Elevation Data (4,998 manholes) • Final Engineering Report • Training City Staff The total amount of this Amendment is $1,989,103 as shown in the breakdown on Attachment "A ". The manhour and fee analysis for this Amendment is shown in Attachment "B ". I have also attached the project schedule for the work as shown in Attachment "C ". If you have any questions or require additional information, please give me a call at (800) 637 -0164 or email me at jforbes @pipelineanalysis.com. Very truly yours, PIPELINE ANALYSIS, LLC James H. Forbes, Jr., P.E. Attachments: Attachment "A" (26 pages) Attachment "B" (6 pages) Attachment "C" (1 page) L NO. 3 "A' of 35 Attachment A Project No. E10015 Professional Services Contract City of Corpus Christi Sanitary Sewer Overflow Reduction Program Hydraulic Modeling Scope of Services Phase 1 Oso, Greenwood & Broadway Service Areas Phase 2 Allison, Laguna Madre and Whitecap Service Areas May 24, 2011 ,�� PIPELINE .ANALYSIS " RUWWATU GCLffE 10R.TYSIFM MGMIMU in association with Mt VOW a LP ENGlHEER5 • PUIIA[R5 • SURVEYORS eogii5ebrs architects I cont(amrs E ND. NO. 3 HIBIT "A" e 3 of 35 Attachment A Contract Amendment No. 3 Sanitary Sewer Overflow Initiative Plan Development and Capacity, Management, Operation & Maintenance Self -audit (Project No. E10015) Amendment No. 3 City -Wide Sanitary Sewer Hydraulic Model Summary of Fees Task Descri tfon Prime Contract Total Amendment No. 7 Total Amendment No. . 2 Total Amendment No. 3 Total Contract 1. Preliminary Phase $17,678.00 $118,594 $38,000 $48,784 $17,678.00 2. CMOM Self -Audit Interviews including SS01 and 303(d) $59,553.00 GREENWOOD -Phase 1 $171,983 $43,480 $59,553.00 3. CMOM Self -Audit Pre -Final and Final Report Submittal $8,963.00 $403,335 OSO -Phase 1 $369,608 $8,963.00 4. SSO Initiative Pre -Final and Final Report Submittal $9,907,00 $6,205 $836,307 . Phase 1Sub-total $9,907.00 5. Greenwood SS01 Plan $346,560 $21,225.00 $11,565 $1,538,860 $21,225.00 6. Broadway SS01 Plan ALLISON - Phase 2 $27,323.00 $31,000 $53,746 $27,323,00 7. Allison, Whitecap and Laguna Madre SS01 Plan $213,121 LAGUNA- Phase 2 $29,176.00 $21,252 $29,176.00 8. City-Wide Hydraulic Model $1,215 $152,324 WHITECAP - Phase 2 $1,989,103.00 $1,989,103.00 Total l; Authorized Fee $96,101.00 $48,548.00 $29176.00 $1989,103.00 1 $2,162,928.00 Service Area Hydraulic Modeling Elevation Survey Manhole Insp., & Rehabilitation Plan : Flow Monitoring 1/1 Analysis Traffic Control Plan Total BROADWAY -Phase 1 $118,594 $38,000 $48,784 $91,480 $2,360 $299,219 GREENWOOD -Phase 1 $171,983 $43,480 $90,262 $94,610 $3,000 $403,335 OSO -Phase 1 $369,608 $100,304 $207,513 $152,677 $6,205 $836,307 . Phase 1Sub-total $660,185 $181,784 $346,560 $338,767 $11,565 $1,538,860 ALLISON - Phase 2 $93,933 $31,000 $53,746 $32,817 $1,625 $213,121 LAGUNA- Phase 2 $66,372 $21,252 $24,340 $39,146 $1,215 $152,324 WHITECAP - Phase 2 $30,627 $13,198 $12,293 $28,085 $595 $84,798 Phase 2 Sub -total $190,932 $65,450 $90,378 $100 $3,435 $450,243 Total., $851,1;17 $247,234 $436,938 1 $438,814 $15,000 $1989,103 Pipeline Analysis, LLC 47.9% $953,345 Co m, Rehmet & Gutierrez 23.5% $467,332 LNV 28.6% $568,426 100.0% $1,989,103 AMEND. NO. 3 EXHIBIT °A" Page 4 of 35 Attachment A SCOPE OF WORK CITY OF CORPUS CHRISTI, TEXAS SANITARY SEWER OVERFLOW REDUCTION PROGRAM WASTEWATER HYDRAULIC MODELING CITY PROJECT E10015 BACKGROUND The approach to the hydraulic modeling of the wastewater collection system is organized around the City's objectives for this project: • Reduction in Sanitary Sewer Overflows • Cost controls and Least Cost Alternatives • Attainment of long -term Infiltration/Inflow solutions • Collection System Capacity Assurance • Regulatory compliance • Customer satisfaction GENERAL INFORMATION A hydraulic wastewater system model will equip the wastewater department with the tool for analyzing system conveyance capacities, bottlenecks, and potential overflow locations. The hydraulic model will facilitate system analysis, aid in development of system improvements, produce informational maps /exhibits, and will predict the system's response to future improvements. The hydraulic model will enable the City to assess and predict potential capacity requirements and develop least cost strategies to optimize system performance. OBJECTIVES This project will address the following objectives: 1. Develop a ten year program that determines wastewater infrastructure modifications /improvements that ensure adequate collection system conveyance capacity. 2. Develop a management tool to improve decision making ability. 3. Generate a prioritized capital improvement program (CIP). 4. Model integration with the wastewater GIS database and MAXIMO. PROJECT PHASING The project will be broken into two phases based on the treatment plant service areas of greatest priority. Phase 1 will consist of the Oso, Greenwood and Broadway WWTP basins. Phase 2 will consist of the Allison, Laguna Madre, and the Whitecap WWTP basins. MODEL BENEFITS • Flow Capacity Evaluation • Overflow Management • Infiltration/Inflow Modeling • System Deficiency Identification • TCEQ SSO Initiative Compliance • CIP Development • New System Design AMEND. NO. 3 EXHIBIT "A" Page 5 of 35 BASIC SERVICES - NIA ADDITIONAL SERVICES The development of a hydraulic model for the six wastewater service areas ensures consistent assessment of future growth, maintenance and system capital requirements for current and future conditions. Furthermore, hydraulic modeling will provide the project team consultants with pertinent data to assess system impacts to various wet weather events and will further enable the project team to test cost effective repair strategies and alternatives. Modeling will allow the team to conduct a series of "what if' scenarios that will help determine least cost solutions. These various scenarios take into account the City of Corpus Christi maintenance and personnel needs, budget, planned growth, capacity issues and can be used to more accurately design relief and/or replacement lines and optimize system rehabilitation. The following tasks are anticipated with the hydraulic modeling effort: 1. Data Collection and Review This task will encompass all aspects of obtaining the required background data associated with the development of the hydraulic wastewater models. This includes the physical infrastructure, flows and loading, and calibration data. 1.1. Project Management /Administration Provide general project management consisting of daily oversight of project work, correspondence with City and Team, and in -house quality assurance and quality control. Define the roles and responsibilities of Team members, communications plan, schedule control, document control, and other project management processes and tools. This task also addresses routine project planning activities needed to initiate the project including development of the project schedules, detailed project scoping, and related project planning. 1.2. Kick-Off Meeting/Workshop This task provides for a kick -off meeting / workshop to confirm detailed project goals and objectives, to communicate the team's vision and project methodology and to establish coordination procedures for the project. Pipeline Analysis, LLC (PA) will prepare and distribute written minutes of these meetings to the City and the Team. Action items and decisions will be clearly identified in the notes. 1.2.1. Kickoff Meeting / Workshop The Team will plan and conduct a project kick -off meeting/workshop with representatives of the City and Team. The purpose of this meeting will be to initiate the project and develop a working understanding of the following: • Introduce the Project Team • Review of Project goals • Review project Scope of Work • Review project schedule (General and basin specific) • Identify information needed from the City • Identify City contacts • Establish communication protocol and project procedures AMEND. NO. 3 EXHIBIT "A" Page 6 of 35 Dan Biles ' ' ' 1 1, j April 12, 2011 Page 7 of 35 In addition, the purpose of this workshop will be to discuss the preliminary modeling methodology and clearly identify and define the modeling needs and capabilities. Team will receive and incorporate City input, facilitate decision - making and resolve miscellaneous issues. The workshop will be approximately 4 hours in length. 1.3. Existing Data Collection Meet with City staff, as appropriate, to collect all available pertinent readily available data associated with the wastewater collection and treatment system including but not limited to the data shown below: • Existing wastewater system base maps • GIS files — collection lines, manholes, lift stations, supporting attribute database, service area boundaries, LIDAR, street centerlines, parcels, land use, overflow reports • City GIS alphanumeric grid map system • Most recent available aerial photos • Record drawings for lift stations • Lift station pump curves & controls (including variable speed info) • Record drawings of force mains Lift station meter data (if available) — 12 months • Lift station run time data (if available) — 12 months • SCADA • Wastewater treatment plant flow records — average and peak wet weather — 12 months • Records of historical complaint/problem areas — 5 years • Water billing and consumption data by service area -- 12 months • Past comprehensive master plans and reports Interviews will be held with Wastewater personnel to obtain their insight into system concerns and needs. Note: The manhole inspections, flow monitoring, rain gauges and survey for rim elevations are included in other tasks. 1.4.Existing Data Evaluation & Validation Evaluate and review all available data and documents collected in the previous task for the sanitary sewer collection system and compile this information for input into the hydraulic model. Identify gaps, deficiencies and /or abnormal data that may require further investigation in order to construct the model. The GIS data will be evaluated to: Verify that each pipe and manhole has a meaningful, unique identifier that will be used to relate the model and the GIS databases. Consultant may develop and use an asset numbering system that uses existing grid maps to better identify where recommendations are being made. Any new asset numbering system will have the equivalent asset number linked from GIS and MAXIMO asset identifications. AMEND NO. 3 EXHIBIT "A" Pa e 7 of 35 Dan Biles ' ' ' April 12, 2011 Page S of 35 • Review and determine if the GIS data is broken into pipe segments appropriate for modeling and the type /level of GIS identifier data to be preserved in the model's pipe segments. • Verify that each pipe has an appropriate and associated manhole at each end. • Verify the hydraulic model connectivity ( map pipe connections with manholes and ensure flow directions are correctly depicted in the model). • Identify large volume water users whom do not contribute to the wastewater system. 1.5. Wastewater Flows The following details the methodology for developing wastewater flow projections in the model for existing and future design years (Existing, 2015 and 2020). The City will provide a water consumption data and GIS shapeflle (if available) for the entire City consisting of the average daily water demands for each customer over the previous 12 months. 1.5.1. Existing Average Daily Flows Estimate Review and confirm service area boundaries. Compare the water consumption data with the dry weather plant flows and calculate the wastewater loading factor within each service area. This is representative of the average percentage of water use transferred to the wastewater system for each customer. Calculate average wastewater flows for each customer and confirm with flow monitoring data collected in other task. Utilize latest available census data to establish population within each service area. Review planning reports (prepared by the City if available) to determine representative rates for population per household. Estimate current population and density. Calculate the average wastewater flows per person within each service area as a check. 1.5.2. Flow Patterns Diurnal flow patterns are essential for creating an accurate wastewater model. Standard patterns will be created for residential and commercial customers based on the flow monitoring results and industry standard patterns calculated by others. Customer specific patterns may be created for large wastewater customers depending on their water use. In general, these patterns will have 1 -hour time steps. This type of model then distributes the daily loads based on these curves and routes the corresponding flows through the collection system. This provides a more accurate representation of the peak flows throughout the system, taking into account the time lag of peaks originating at the furthermost sections of the system and the natural attenuation that occurs. 1.5.3. Existing Wet Weather Peak Flows Analyze the peak treatment plant flows. Determine the relationship with the results from the flow monitoring and rain gauge data collected over the 75 day period. After calculating the percentage of rainfall entering the collection system, calculate the wet weather flows for a 5 year — 24 hour rain event. This will define the Peak Wet Weather flows. Should rainfall not be adequate during the 75 day monitoring period to calibrate the hydraulic model, then a determination will be made to either extend the flow monitoring on a week by week basis or terminate the monitoring. See section 1.6.6 Confirmation of Adequate Wet Weather Plow. M NO. 3 T "A" of 35 Dan Bites April 12, 2011 Page 9 of 35 S , 1.5.4. Aerial Investigation Review digital aerial photography (provided by City) to identify and confirm the areas of new development. Submit map identifying areas of new development for City review. City shall identify any additional areas of new development not included in the aerial photo. 1.5.5. Wastewater Flow Projections Meet with City personnel (Development Services, Wastewater, Engineering Services) to discuss anticipated regions of future growth within the City pertaining to the 2020 planning horizon. Apply prorated population growth projections based on anticipated regions of future development for respective design years. Compare to projections established by planning department. Combine the growth and population projections with industry standard and/or local standards to develop wastewater production projections for each basin for the 2015 and 2020 planning years. 1.6. Wastewater Flow and Rainfall Monitoring Develop a 75 day wastewater flow monitoring plan to collect data that will be used for hydraulic model calibration, establish magnitude of wet weather inflow and prioritize sub- basins for future testing and rehabilitation. Mobilize flow monitoring team and coordinate startup. Establish personnel assignments and responsibilities. Inventory equipment needs and order expendable supplies. Perform meter pre - calibration, prepare mounting rings for various pipe sizes, set -up meter database and project information. Delineate sub -basin boundaries based on current GIS mapping for each preliminary site such that the linear footage of pipeline within each sub -basin can be determined. 1.6.1 Preliminary Monitoring Locations Based on the mapping obtained and the geometry of the existing collection system, the proposed location for each meter will be established. Preliminary meter locations will be placed based on site accessibility from mapping, upstream contributing area, pipe size, service area characteristics, and in the case of rain gauges the spatial distribution across the entire service area. 1.6.2 Finalize Flow Monitoring Locations Upon review and approval by City staff, the preliminary flow monitoring sites will be revised if necessary and finalized. Location maps for each site will be developed and used by field crews to perform detailed site inspections. 1. 6.3 Conduct Field .Inspections The proposed flow meter site inspection will verify wastewater flows, line sizes, debris levels, flow hydraulics and access. Site inspection reports will be prepared based on the field observations. Meter sites will be finalized or new alternative sites established during this task. Where the proposed site has poor hydraulic characteristics, then the manholes upstream and /or downstream will be inspected to determine if, by relocating the meter site, better flow hydraulics (that will result in a higher quality of collected data) can be achieved. Upon completion of the field inspections, the meter will be installed. Tabular listings of meter site locations and a corresponding map will be prepared to display the final installed locations of wastewater flow meter and rainfall gauges. GPS coordinates for each flow meter and rain gauge site will be obtained. 1.6.4 Conduct Flow Monitoring for 75 days (including Rainfall Gauges) Temporary flow meters will be utilized to establish wastewater flows during dry (and wet) AMEND. NO. 3 EXHIBIT "A" Pa e9of35 Dan Biles April 12, 2011 Page 10 of 35 weather conditions. Flow metering equipment will be capable of recording flow under surcharged conditions and will be synchronized to the same clock used for rain gauges. The duration of monitoring will be 75 days. If adequate rainfall is recorded prior to the 75 day milestone (refer to Section 1.6.6), then consultant will notify City of intent to terminate the flow and rainfall monitoring early. A total of 79 temporary flow meter sites and 33 rain gauge sites are anticipated based on a preliminary evaluation. The City is currently installing rain gauges as part of a storm water monitoring program and consultant will incorporate this supplemental rainfall data, if available. The following is a summary of consultant provided equipment: Pipeline Analysis staff will use sound engineering judgment in adjusting raw depth and velocity data to account for debris, etc. and may use other analysis techniques, such as scatter graphs, multiple flow equations and hydrographs to review data integrity or further analyze the flow data. Each meter will be field calibrated prior to installation. Calibration of each meter will consist of an independent verification of the flow depth and velocity. The flow sensors will be secured to a mounting band that fits snugly in the pipeline. The data logger for each site will then be installed and secured in the top of each manhole and the meter will be activated at industry standard user defined sampling intervals not to exceed 15 minutes. Continuously recording rainfall gauges will be installed to obtain each storm event intensity and duration across the study area. The number of rainfall gauges for each service area ranges from 4 in Laguna Madre to 7 in the Oso service area. Each rainfall gauge will be installed and calibrated to ensure proper operation and recording. Rainfall gauges are of the tipping bucket type and accurately record rainfall to 0.01 inches. Maintenance logs will be prepared by consultant for each weekly site visit and will show as a minimum the date, time, operational check, verification of recordings, and other applicable maintenance items. The frequency of site visits will be based on the site history and will generally be weekly unless more frequent visits are required due to debris of sensor fouling. Using the collection system maps in association with GIS and supplemented by the City storm water rain gauges, a rainfall distribution analysis will be performed for each major storm event. For each metered sub -area, the volume of rainfall that fell over the surface will be determined using GIS spatial analysis and compared to the discrete wet weather infiltration/inflow. 1.6.5 Data Collection From Flow Meters Routine maintenance and service will be undertaken to confirm normal operation. Written logs of each site visit will be maintained and will be used to record date and time of visit, meter velocity and depth reading, corresponding independent velocity and depth reading, maintenance items such as battery voltage, etc. A tabular and graphical presentation of the final data will be prepared. Peak, minimum and average flow depths and rates will be generated to assist in data analysis and provided in hardcopy and electronic (MS Excel) formats. AMEND. NO, 3 EXHIBIT "A" Pa a 10 of 35 RAI BROADWAY -PH1� 16 6 GREENWOOD -PHI 17 6 OSO -PH 1 28 7 rd 0' ALLISON -PH2 6 5 LAGUNA -PH2 7 4 WHITECAP-PH2 5 p 5 9W NUBIA I . a:4�4�#14 �. Pipeline Analysis staff will use sound engineering judgment in adjusting raw depth and velocity data to account for debris, etc. and may use other analysis techniques, such as scatter graphs, multiple flow equations and hydrographs to review data integrity or further analyze the flow data. Each meter will be field calibrated prior to installation. Calibration of each meter will consist of an independent verification of the flow depth and velocity. The flow sensors will be secured to a mounting band that fits snugly in the pipeline. The data logger for each site will then be installed and secured in the top of each manhole and the meter will be activated at industry standard user defined sampling intervals not to exceed 15 minutes. Continuously recording rainfall gauges will be installed to obtain each storm event intensity and duration across the study area. The number of rainfall gauges for each service area ranges from 4 in Laguna Madre to 7 in the Oso service area. Each rainfall gauge will be installed and calibrated to ensure proper operation and recording. Rainfall gauges are of the tipping bucket type and accurately record rainfall to 0.01 inches. Maintenance logs will be prepared by consultant for each weekly site visit and will show as a minimum the date, time, operational check, verification of recordings, and other applicable maintenance items. The frequency of site visits will be based on the site history and will generally be weekly unless more frequent visits are required due to debris of sensor fouling. Using the collection system maps in association with GIS and supplemented by the City storm water rain gauges, a rainfall distribution analysis will be performed for each major storm event. For each metered sub -area, the volume of rainfall that fell over the surface will be determined using GIS spatial analysis and compared to the discrete wet weather infiltration/inflow. 1.6.5 Data Collection From Flow Meters Routine maintenance and service will be undertaken to confirm normal operation. Written logs of each site visit will be maintained and will be used to record date and time of visit, meter velocity and depth reading, corresponding independent velocity and depth reading, maintenance items such as battery voltage, etc. A tabular and graphical presentation of the final data will be prepared. Peak, minimum and average flow depths and rates will be generated to assist in data analysis and provided in hardcopy and electronic (MS Excel) formats. AMEND. NO, 3 EXHIBIT "A" Pa a 10 of 35 Dan Biles ' April 12, 2011 Page 11 of 35 1.6.6 Confirmation ofAdequate Wet Weather Data The proposed flow monitoring will be undertaken to obtain adequate hydraulic information for dry (and wet) weather conditions. A review of the dry and wet weather data will establish the number of storm events recorded and a determination if adequate data exists or if the metering period needs to be extended. If adequate rainfall has occurred prior to the 75 days then the City may request the meters be removed and the prorated daily cost credited to the City. In general at least three (3) storm events, that cause a noticeable system response, will be necessary to evaluate wet weather flows. The wet weather flow data information will be used to establish rainfall derived infiltration/inflow (RDII). Both cumulative and discrete flows will be evaluated. Should rainfall not be adequate during the 75 day monitoring period then a determination will be made to either extend the flow monitoring on a week by week basis or terminate the monitoring based on forecasts for the area. The City project manager and consultant will review the data collected, review the impact on the hydraulic model, review the National Weather Service long - range precipitation forecast and make a decision on whether to extend the monitoring period. The City project manager will have the final authorization to extend the flow monitoring or terminate the flow monitoring at the end of the 75 day milestone. 1.6.7 Flow Data Analysis PA will analyze the gathered data and develop tabular and graphical summaries. Comparisons with any previous historical flow meter data from previous 1/I Analysis, Sewer System Evaluation Surveys will be summarized and evaluated. The impact of silt and debris will be evaluated. Information obtained during the monitoring period will be used to determine the following for each meter site: 1. Dry weather average daily flow — A typical dry weather week will be established that is not impacted by rainfall. Velocity data will be compared to debris levels to analyze the scouring velocity necessary to prevent deposition in the lines. Discrete flows from each metered sub -basin will be calculated. 2. Dry weather peak flow — Peak flows during dry weather will be determined from the recorded meter site data. Wet weather average daily flow -- Wet weather flows for each rainfall event will be analyzed to determine the percentage of rainfall that enters the collections system (also known as the leakiness factor). By comparing the storm event flow with the dry weather flows will establish the Rainfall Derived Infiltration/Inflow (RDII). This value will vary for each storm duration and intensity. The discrete RDII for each sub -basin will be determined and will allow the ranking (prioritization) of each sub -basin by severity of RDII. 4. Wet weather peak flow — Peak flow rates during wet weather are critical to the capacity analysis. Peaking ratios (Peak flow rate to average dry weather flow) will be compared for dry and wet weather. 5. Peak inflow rates — Peak inflow rates are calculated by observing peak flow during a wet weather events. 6. Total 1/1 volume — The area under each storm event curve will be evaluated to establish the volume of rainfall induced infiltration inflow. These values can then be normalized AMEND. NO. 3 EXHIBIT "A" Pa e 11 of 35 Dan Biles ' ' April 12, 2011 Page 12 of 35 to establish the volume of RD1I per inch of rainfall. Projections can then be made to accurately determine the impact of RDII during a normal year. During data analysis, the Manning and continuity equations may be plotted for flow. Under ideal free flow hydraulic conditions the two separate equations for flow should provide similar results. However, in a backwater or restrictive hydraulic situation, the Manning equation will over quantify flows and diverge from the continuity equation. Such an occurrence will indicate to the data analyst that a backwater condition was observed and a downstream restriction should be investigated. The project team will use sound engineering judgment and experience in adjusting raw depth and velocity data to account for debris levels. By obtaining accurate velocity and depth data, the engineer can further isolate hydraulic problems within the collection system. 1. 6.8 Ranking of Meter Sub-basins A major result of the city -wide flow monitoring program will be the priority ranking of sub - basins based on various factors such as RDII, SSOs, maintenance history, etc. This matrix ranking will be used in a multi -year program to find and fix system defects. Using the rainfall distribution analysis and recorded wet weather flow data, the gallons of rainfall dependent III (RDII), per inch of rainfall, per linear feet of service area pipeline (gal /in/if) will be calculated. By performing this matrix analysis, each sub -basin is compared, assessed and ranked on an equal basis. Consultant will prepare a matrix for city review and approval. 1. 6.9 Preparation of SSES Phasing & Cost Estimates Based on the matrix ranking of sub - basins, a phased Sanitary Sewer Evaluation Survey (SSES) program will be prepared along with estimated implementation cost estimates. 1.6.1 D Review of III Study Report PA will prepare three (3) copies of the III Analysis Pre- Submittal Final Report which summarizes all findings, observed deficiencies, and recommendations with estimated costs. Review comments will be incorporated into the Final Report and five (5) copies submitted to the City. The final I/I Study Report will include the following: Executive Summary • Dry Weather Flows • Wet Weather Flows • Rainfall Distribution Analysis • Distribution of RDII • Priority Ranking of Sub - basins • Discussion and estimated cost of a Permanent Flow Monitoring Network • Recommended testing and rehabilitation schedule and cost estimates • Appendix with flow and rainfall data • Electronic spreadsheets, photographs, maps and report on CD included with each report AMEND. NQ. 3 EXHIBIT "A" Page 12 of 35 Dan Biles ' ' ' ' ` April 12, 2011 Page 13 of 35 Deliverables: 1. Delivery of equipment including flow meters and rainfall gauges 2. Preliminary meter site locations. List of proposed meter sites and location map(s) delineating the basin boundaries will be prepared by Pipeline Analysis for review and approval 3. Completion of meter site location forms 4. Map showing MAXIMO chronic maintenance areas and SSOs for past three years 5. Map showing proposed meter and rain gauge site locations for approval by City 6. Map showing finalized meter and rain gauge site locations and basin boundaries including City storm water rain gauges 7. Velocity, depth, and flow data in tabular format 8. Site photographs and site installations sheets 9. Rainfall summary intensity and duration, rainfall volume, rainfall distribution using GIS 10. Matrix and final priority ranking of sub - basins H. Three (3) copies of Pre -Final Report 12. Five (5) copies of Final Report 2. Model Development & Data Conversion 2.1. Existing Model Development 2.1.1. Infrastructure Integrate all existing gravity line, manhole, force main, III Study Report and lift station GIS data for the development of the dynamic hydraulic model of each of the City's collection system service areas within latest version of City approved hydraulic model. At a minimum, the following database information will be incorporated: • Manholes — rim elev, flow lines, type, and elev. source • Lines & FMs — diameter, material, roughness, % blocked • Lift stations — flow lines, diameter, depth, slab elev., water level elevations for pumps "on" and pumps "off" All wastewater lines I0 -inch in diameter and greater shall be modeled with detailed data collected in other tasks. As much as possible and at critical locations, all other lines smaller than 10 -inch will be included in the model using assumed slopes, flow lines and rim elevations. LIDAR data will be used for assumed rim elevations. Critical locations could be defined as chronic overflows, pump station discharge points or locations necessary to address capacity restrictions. The model will incorporate a unique identifier for each asset which will link closely with the City's existing GIS mapping and data storage. E O. 3 "A" f35 Dan Biles ' . ' April 12, 2011 Page 14 of 35 2.1.2. Operational Parameters From the information collected in previous tasks, input all pump curves and lift station control elevations for each lift station to be incorporated into the model. The float elevations will be provided either by the City or will be based on record drawings. VFD curves will also be created where applicable. 2.1.3. Flow Patterns Diurnal flow patterns determined previously (Task 1.5.2) will be input into the model. 2.2. Allocate Existing Wastewater Flows Using the water billing data and point shapefrle (if available) provided by the City and linked to the parcel base maps, allocate and distribute residential and commercial wastewater flows within the service area and assign to the appropriate manholes. 2.3. Infiltration and Inflow Develop an Infiltration and Inflow (I & I) modeling strategy best suited to the available data. Cgmpare the dry weather flows and wet weather flows with the gauged rain data to establish the relationship between rainfall and III and to determine the best method for estimating these flows in the model. III will be simulated in the model through the use of either a defects database or as contributions based on service area and pipe size or as unique diurnal contributions, whichever the Consultant feels has better information. The effects of precipitation on wastewater flow rates via rapid inflow or gradual infiltration will also be modeled. The actual level of detail used in the simulations will be dependent upon the quality of data obtained in the flow- monitoring program. It is anticipated that infiltration will be defined on a service area basis with set rates used for dry. and wet flow conditions for all sections of a given line. 2.4. Infrastructure Update Update model database with system improvements completed, but not included on existing GIS maps. These improvements will also include the addition of new subdivision plans and any map book corrections provided by the City. System improvements are limited to improvements constructed (under this work task). Planned future system improvements and/or partially completed improvements will be addressed below, prior to scenario modeling. Note: It is assumed that most of the system improvements and new subdivision development is currently updated in the GIS. Therefore, the scope of this task is limited to the addition of 20 record drawing plan/profile sheets to update the model. Additionally, a cut -off date of 45 calendar days after NTP will be established for all record drawing and atlas map submittals for inclusion in this project. AMEND. NO. 3 EXHIBIT "A» Pa e14of35 Dan Biles April 12, 2011 Page 15 of 35 2.5. Large Wastewater Customers Evaluate major water users identified in the model database and update model based on water usage records provided by the City. Large volume wastewater customers will be directly connected to the model where appropriate. Note: The City will provide a G1S point database, where available, detailing the approximate Water Meter Account service locations with the associated billing data for a 12 month period. 3. Model Calibration Calibrating a wastewater model generally consists of adjusting the wastewater system parameters within reasonable limits so that the model's simulated results closely resemble actual field monitored flows and depths and operator observations. 3.1. Calibration Calibration runs will be performed to match the flow monitoring data to the simulation results for average and peak flows at flow meter locations in each service area. This will also include matching the initial response time to known rainfall until the computer calculated flows and travel times (hydrographs) are within acceptable agreement with monitored data. Adjustments will be made to the input data (flow rates, diurnal flow patterns, T & 1 values, pipe roughness, pump curves, pipe deficiencies, rainfall response characteristics, etc.) to calibrate the results to the flow data. The collection system model will use defined diurnal curves for each land use for effective calibration. The model will calculate the resulting hydrographs at points in the system that can then be compared with the monitoring data. 3.2. Sensitivity Analysis hi conjunction with the calibration process, the modeler will investigate the sensitivity of the modeling results to changes in various parameters. These parameters will be varied for a range of typical values and the effects this has on the modeling results will be analyzed. The results of this analysis will guide the calibration process. Validate updated model verifying the model is simulation ready. 3.3. Technical Memorandum This task includes a Technical Memorandum #I covering the Data Collection, Model Development and Model Calibration tasks and will be used as a basis for the Final Report. The report will document all assumptions, methodologies, and quality assurances involved in the project to date. 3.4. Workshop Prior to starting the existing system analysis task, the City staff will review the updated model database for overall accuracy and understanding in a project workshop. Plan and conduct the project workshop with representatives of the City and Team. The purpose of this meeting will be to present the calibrated model performance and to review plan plots and key profile drawings. AMEND. NO. 3 EXHIBIT "A" Page 15 of 35 Dan Biles April 12, 2011 Page 16 of 35 4. Existing System Analysis Using the calibrated model, determine the existing system flow capacities and identify "problem areas" such as surcharging, low velocities ( <2 fps) and capacity deficiencies (ie. surcharge). Deficiencies during both dry weather and the peak design storm wet weather will be identified and prioritized for every pipe segment. In the collection system model, sections that are at or near capacity under a given flow condition will be identified. The model will be queried to identify by color - coding all pipe sections with surcharging or Dld (design hydraulic depth to pipe diameter ratio) values at specified levels, and excessive I & L These criteria will not only be used to identify sections that are at or over capacity, but it will also be used to identify sections that are nearing critical threshold levels. This information will be used to both identify and prioritize rehabilitation or replacement projects. The recommended system design criteria to be analyzed will be minimum slopes, minimum velocities, D/d ratios, and overflow freeboard (allowable surcharge levels). 5. Future System Analysis This task addresses the City's desire to expand its wastewater collection system in a logical and orderly fashion. Each of the deficient areas identified during model results analysis will be addressed and alternative solutions to correct the deficiencies developed. The existing system model will serve as the basis for development of the future system models; they will be utilized and account for land use loadings and diurnal response. Appropriate assumptions will be made for the collection system model with respect to future I & 1. The future models will extend service to the anticipated land uses and service area boundaries identified previously, and integrate options for future alternatives. 5.1— Proposed Future Developments Other future system improvements submitted prior to 60 days from the notice to proceed will be incorporated into model. Conduct model validation following the addition of proposed new development. Note: Scenario modeling will include the infrastructure proposed in the projects listed above. Prior to starting this task, the City staff will review the future model database for accuracy. 5.2. Allocate Future Flows and Create Scenarios The proposed wastewater flows previously developed for 2015 and 2020 will be properly distributed and allocated to the model. Create the dry and wet weather now scenarios for each of these planning years. 5.3. Future System Analysis Analyze design year models to the 2020 planning horizon. Identify capacity deficient segments /regions within the existing collection system for each design year model. 5.4. Develop System Improvement Alternatives AMEND. NO. 3 EXHIBIT "A" Page 16 of 35 Dan Biles ' April 12, 2011 Page 17 of 3 S Engineer will develop various system improvement alternatives to remedy identified capacity issues. Alternatives will include direct removal and replacement of deficient lines, upsizing, pipe slope adjustment, paralleling deficient lines, addition of pumping stations, service area transfers, and in some cases in -line and/or off -line storage options. All improvements will be sized to mitigate the deficiency through the projected ultimate population build -out with the 5 year 24 hour design rainfall event. Evaluate system improvement alternatives in the model. All system deficiencies determined during model analysis and the recommended system improvements will be shown on figures /exhibits in the Final Report. A milestone workshop will be scheduled to discuss the analysis findings and prepare a technical memorandum with Staff input on prioritizing improvements. Note: The City will provide input into future system expansion/improvement plans to test. during this task. Anticipated sources may include the 10 year CIP plan associated with the ongoing Sanitary Sewer Overflow Initiative. 5.5. Project Workshops Project update meetings will be scheduled during the course of the project and major milestone presentations will be made. The first milestone presentation will be made upon completion of Task 1. Included in this milestone meeting will be a presentation of the Task 2 assumptions and design criteria to be utilized during model analysis. Design criteria will typically be those described in TCEQ "Wastewater System Design — Chapter 217 ". Agreement on design issues and alternatives to be considered based on the dry and wet weather calibrated model will be discussed. A technical memorandum will be prepared summarizing the meeting. Upon review and completion of the Final Report, a final workshop will be scheduled to present the detailed findings and recommendations to the City of Corpus Christi staff and separately to the City Council. 6. Final Engineering Report A full description of the model building and model analysis process will be presented in the Final Report. System deficiencies determined during model analysis and the corresponding system improvement alternatives will be listed and shown in figures. Included in the Final Report will be a set of exhibits displaying the recommended system improvements prepared similar to the Grid /Plate system exhibits currently used by the City. Exhibits will be widely used to provide a graphical representation of improvements including comparison of existing and proposed pipe sizes, flow directions, etc. 6.1. Final Report The Final Report will be composed of the following: The report will include the prior Technical Reports detailing the Model Update process and both the Dry and Wet Weather Scenario Modeling efforts. Recommended system improvements will be outlined based on the results of the Scenario Modeling and planned project improvements. AMEND. NO. 3 EXHIBIT "A" Pa a 17 of 35 Dan Biles April 12, 2011 Page 18 of 35 f • Evaluation of permanent flow meter technology and recommendations (if applicable) • Comments provided by the City will be addressed in the Final Report. • A DVD Final Report will be included with each service area Final Report. • Provide hydraulic model databases, report, G1S maps, project databases on CD /DVD or hard drive. • Three (3) copies of the Draft Final Report will be provided for review and comments. Five (5) copies of the Sanitary Sewer Service Area Final Report will be provided. Presentation of the Final Report to the City Council. 6.2. Preliminary Planning Level Cost Estimates For each model alternative, a planning -level engineer's estimate of construction cost will be developed. The planning -level construction cost estimates will be based on composite per linear foot pricing from recent bid tabulations supplied by the City and supplemented with bid unit prices from other local area governmental agencies if applicable. This will facilitate a cost comparison between each alternative and used in the selection of the recommended improvements plan. The costs will be based on the materials of construction, quantities, cost escalation factors tied to the schedule, administrative fees, engineering fees, and planning contingencies. 6.3. Prioritization Maps Final model runs with the proposed system improvements will be detailed with results included in the Report Appendix. This will include exhibits of updated maps with proposed system upgrades shown color coded based on priority. Deficiencies occurring in the existing model during dry weather conditions will have the highest priority and deficiencies occurring in the projection year population model during the design rainfall event will have the lowest priority. Sanitary sewer overflows in either dry or design rainfall event conditions will always be considered a high priority deficiency. 6.4. Capital Improvement Program (CIP) Develop a draft and final 10 year CIP for the proposed collection system improvements as recommended in the final report. This will include: • Project Priority Ranking • Grouping of Projects • Schedule • Costs • Regulatory M Dan Biles April 12, 2011 Page 19 of 35 7. Manhole Inspections To facilitate the hydraulic modeling effort it will be necessary to obtain rim to invert distance for all manholes to be included in the hydraulic model. Some manholes within the Broadway, Oso and Laguna Madre services areas have previously been inspected and that data will be utilized in this project. While obtaining this model information, those manholes connecting trunk lines will undergo full inspections by field crews. Note that modeling of smaller diameter sewer ( <10 inches) may require elevation data based on known capacity concerns or chronic capacity issues. Following is a summary of estimated manhole inspections by service area for those manholes on sewer lines 10 -inch and larger: *Note: Incorporates previous inspection data where applicable. Updating the collection system maps is a high priority in order to establish sub -basin boundaries, directions of flow and length of pipe within each sub -basin in the model. The data gathered during this phase of the project will be incorporated into future task orders to prioritize manholes for rehabilitation and establish the base data necessary to accurately determine mainline sewer rehabilitation alternatives and costs. Other important deliverables resulting from this work task are the updating of the collection system map, determination of debris levels in pipes and verification of pipe sizes. This information is critical in constructing the hydraulic model and preparing subsequent rehabilitation plans and cleaning requirements to restore capacity. Inspection personnel will use digital cameras during the inspection of all manholes on this project. All photographs will be included in the field inspection computer database so that a permanent electronic record can be maintained. During inspection, each of the following types of information will be obtained to establish the condition and prioritize least cost repairs: • Basin Designation • Manhole /Cleanout ID • Inspection Status • Address • Surface cover, grade, type of cover (paved, yard, etc.) • Material of construction — brick, concrete, etc. • Area and Internal photo of manhole • All incoming and outgoing pipe depths from rim to invert AMEND. NO. 3 EXHIBIT "N' Page 19 of 3 BROADWAY -PHI 2,512 509* GREENWOOD -PHI 3,303 943 OSO -PHI 8,416 2,157* ALLISON -PH2 2,266 571 LAGUNA -PH2 1,347 249* WHITECAP -PH2 880 129 f�K., *Note: Incorporates previous inspection data where applicable. Updating the collection system maps is a high priority in order to establish sub -basin boundaries, directions of flow and length of pipe within each sub -basin in the model. The data gathered during this phase of the project will be incorporated into future task orders to prioritize manholes for rehabilitation and establish the base data necessary to accurately determine mainline sewer rehabilitation alternatives and costs. Other important deliverables resulting from this work task are the updating of the collection system map, determination of debris levels in pipes and verification of pipe sizes. This information is critical in constructing the hydraulic model and preparing subsequent rehabilitation plans and cleaning requirements to restore capacity. Inspection personnel will use digital cameras during the inspection of all manholes on this project. All photographs will be included in the field inspection computer database so that a permanent electronic record can be maintained. During inspection, each of the following types of information will be obtained to establish the condition and prioritize least cost repairs: • Basin Designation • Manhole /Cleanout ID • Inspection Status • Address • Surface cover, grade, type of cover (paved, yard, etc.) • Material of construction — brick, concrete, etc. • Area and Internal photo of manhole • All incoming and outgoing pipe depths from rim to invert AMEND. NO. 3 EXHIBIT "N' Page 19 of 3 Dan Biles April 12, 2011 Page 20 of 35 • All incoming and outgoing pipe digital photographs • All incoming and outgoing pipe diameters and material of construction • Outgoing pipe length Debris depth • Defects — Active, Evidence or No Infiltration/Inflow with digital photographs • Field corrections to collection system map including pipe sizes and materials and lengths Engineer will attempt to locate all manholes to obtain the information for use in the modeling effort. Where manholes are buried under asphalt or concrete and will require grade adjustments, then the Engineer will provide a list of such manholes to the City project manager who may coordinate exposing and raising those critical manholes under current in -place annual outside services contracts. 8. Topographic Survey Survey datum will be coordinated with City staff and tied into the City control monument system. Using GPS equipment, tie the horizontal location and vertical elevation of the sanitary sewer trunk line (to 0.1 ft) and pump station control elevations. Trunk lines include all pipes 10 -inch and larger, and those 8 -inch lines and force mains along a trunk route or those segments known to have capacity concerns. The hydraulic model will utilize the manhole depth measured during manhole inspection. Following is a summary of estimated manhole rims that will require elevation survey that are associated with sewer lines 10 -inch and larger: M BROADWAY-PHI 2,512 758 GREENWOOD -PHI 3,303 943 OSO -PHI 8,416 2 221 �4�1` 1�ul -ill ALLISON -PH2 2,266 571 LAGUNA -PH2 1,347 376 WHITECAP-PI-12 880 129 ' a,1 'S ?1d M Dan Biles April l2, 2011 Page 21 of 35 9. Training City Staff This task includes 3 days (24 hours) of hands on model training for up to two (2) people. Engineer will conduct the training to introduce the model, incorporate the basic modeling concepts, and to give an overview of the types of modeling scenarios that should be anticipated. 10. Supplemental. Assistance —Data Gathering Allowance If authorized by the City representative, Engineer may provide assistance to city staff in gathering required data for the modeling effort. Data from as -built drawings, pumps, GIS, etc. may be accessed by Engineer if authorized. ll. Traffic Control Plan Allowance Engineer will incorporate industry standard traffic control devices and practices similar to those used by the City Wastewater Department during the inspection effort. These practices will be used for collector and arterial streets and in instances where the typical flow of traffic may be affected. In special circumstances, where a manhole is located in a high volume and /or high speed traffic right of way, a detailed site specific traffic control plan may be required. If authorized by the City representative, the engineer will develop and implement the site specific traffic control plan for approval. This work will be paid for using the Task 11 — Traffic Control flan Allowance. AMEND. N. 3 EXHIBIT ' 9 'A' Pa a 21 of 35 Dan Biles April 12, 2411 Page 22 of 35 CITY'S RESPONSIBILITIES So as not to delay the services of ENGINEER, the CITY shall do or provide the following (if available) in a timely manner: a. Provide Existing Data Existing data delivered to the ENGINEER by the CITY remains the property of the CITY and must be returned to the CITY after completion of the PROJECT. CITY will provide ENGINEER at no cost: 1. Existing wastewater and storm water system base maps and those construction drawings necessary to accurately depict the geometry of the wastewater collection system. 2. Review the hydraulic model geometry and note changes or revisions necessary to properly present the current system geometry 3. City Planning and Zoning Division will provide population and land use data. 4. Provide ENGINEER all pump sizes, makes, models and number of pumps for each lift station 5. GIS files (if available)— collection lines, manholes, lift stations, service area boundaries, LIDAR, street centerlines, parcels, land use, overflow reports 6. City GIS alphanumeric grid map system (shapefile format if available) 7. Most recent aerial photography 8. Identify any additional areas of development not included in aerial photograph (if applicable) 9. Discuss anticipated regions of future growth 10. Review and final approval of flow and rain gauge monitoring sites 11. Access to sites for placement of equipment and personnel. Assistance (if requested) for placement of rainfall gauges at secure locations such as fire stations, pump stations, etc. 12. Review and authorization to extend flow and rainfall monitoring beyond 75 days (if applicable) 13. Record drawings for lift stations 14. Lift station pump curves & controls (including variable speed info) 15. Force main information 16. Review updated current conditions and future model database for overall accuracy and understanding 17. Provide input into system expansion/improvement scenarios 18. Lift station meter data (if available) 19. Lift station run time data (if available) 20. SCADA data (if requested and if available) AMEND. NO. 3 EXHIBIT "A" Page 22 of 35 Dan Biles ' 1 1, ' April 12, 2411 Page 23 of 35 21. Provide recent bid tabulations where applicable 22. Provide review and coordination with manhole adjustment annual contractor for uncovering and raising key manholes identified during manhole inspections 23. Wastewater treatment plant flow records — average and peak wet weather 24. Records of historical complaint/problem areas 25. Water billing and consumption data and GIS point database shapefile (if available) 26. Past comprehensive master plans and reports 27. Review and provide written comments on Pre - Submittal Final Reports 28. Meeting room for meetings b. Provide Access Arrange for access to, and make all provisions for, ENGINEER or ENGINEER'S Sub consultants to perform services under this AGREEMENT. c. City Representative CITY shall designate both a Wastewater Department and Engineering Department representative to act as a contact persons on behalf of the CITY. AMEND. NO. 3 EXHIBIT "P. Page 23 of 35 Dan Biles April 12, 2011 Page 24 of 35 SCHEDULE The ENGINEER'S services shall be performed in a timely manner consistent with sound professional practices. The ENGINEER will complete the work according to the following schedule: Phase I: Broadway, Greenwood and Oso Service Areas Week No. Start Duration (Weeks) Week No. End ACTIVITY 1 1 2 Kick- Off Meeting / Workshop 4 31 35 Manhole Inspection & Survey 13 22 i 35 Flow Monitoring (August 1-- Oct. 14, 2011) 4 31 35 Model Data Collection 22 30 52 Model Development 35 30 65 Model Calibration 65 1 66 Workshop Steady -State Model — MILESTONE 1 52 22 74 Existing & Future System Analyses 74 1 75 Project Workshop — MILESTONE 2 61 17 78 Tech Memo/Final Report 78 4 82 Training Workshop — MILESTONE 3 82 0 82 PHASE 1 COMPLETE Phase 2: Allison, Lazuna Madre and Whitecap Service Areas Week No. Start Duration (Weeks) Week No. End ACTIVITY 1 1 2 Kick- Off Meeting / Workshop 2 20 22 Manhole Inspection & Survey 22 17 39 Flow Monitoring (August 1— Oct. 14, 2012) 4 26 30 Model Data Collection 26 22 48 Model Development 39 17 56 Model Calibration 56 1 57 Workshop Steady -State Model — MILESTONE 1 52 17 69 Existing & Future System Analyses 69 1 70 Project Workshop — MILESTONE 2 52 22 74 Tech Memo/Final Report 74 0 74 PHASE 2 COMPLETE AMEND. NO. 3 EXHIBIT "A" _ Page 24 of 35 mm m m m m Dan Bites April 12, 2011 Page 26 of 35 Exhibit A Compensation Summary By Service Area Project Scope Quantities Notes: PH1 =Phase 1 Broadway, Oso and Greenwood Service Areas PI-12=Phase2Allison, Laguna Madre and Whitecap Service Areas 1. Field elevation survey will be used in conjunction with manhole inspection data to establish pipe slope 2. Previous manhole inspection data will be used to obtain rim to invert distances (Broadway, Oso and Laguna Madre) 3. Manhole inspection data will confirm pipe sizes, connectivity and establish manhole rehabilitation plan 4. Flow monitoring will be used to calibrate the dry and wet weather hydraulic model and prioritize areas for SSES testing and rehabilitation Off �t 'G�°... } �. �, 'i 1'CS 7 '. '�n' e t >'' p � A. _ ' y �C' x MS.I §m � BROADWAY-PH1 2,512 509 758 852,936 220,099 16 6 GREENWOOD-Phase 1 GREENWOOD-PHI 3,303 943 943 1,118,804 324,029 17 6 12 0SC-PH1 8,416 2,157 2,221 2,637,875 664,085 28 7 24 ALLISON-Phase 2 $93,933 $31,000 $53,746 $32,817 $1,625 $213,121 LAGUNA-Phase 2 $66,372 $21,252 $24,340 $39,146 $1,215 $1 52,324 ALLISON-PH2 2,266 571 571 647,400 159,711 6 5 17 LAGUNA-PH2 1,347 249 376 387,948 100,810 7 4 13 WHITECAP-PH2 880 129 129 279,431 41,756 5 5 17 Z:i Notes: PH1 =Phase 1 Broadway, Oso and Greenwood Service Areas PI-12=Phase2Allison, Laguna Madre and Whitecap Service Areas 1. Field elevation survey will be used in conjunction with manhole inspection data to establish pipe slope 2. Previous manhole inspection data will be used to obtain rim to invert distances (Broadway, Oso and Laguna Madre) 3. Manhole inspection data will confirm pipe sizes, connectivity and establish manhole rehabilitation plan 4. Flow monitoring will be used to calibrate the dry and wet weather hydraulic model and prioritize areas for SSES testing and rehabilitation AMEND. NO. 3 EXHIBIT "A' Pa 2e 26 of 35 �t 'G�°... } �. �, 'i 1'CS 7 '. '�n' e t >'' p � A. _ ' y �C' x MS.I §m � BROADWAY -Phase 1 $118,594 08,000 $48,784 $91,480 $2,360 GREENWOOD-Phase 1 $171,983 $43,480 $90,262 1 $94,610 $3,000 1 $403,335 OSO-Phase 1 $369,608 $100,304 $207,513 $152,677 $6,20 $836,307 ALLISON-Phase 2 $93,933 $31,000 $53,746 $32,817 $1,625 $213,121 LAGUNA-Phase 2 $66,372 $21,252 $24,340 $39,146 $1,215 $1 52,324 WHITECAP-Phase 2 $30,627 $13,198 $12,293 $28,085 $595 $84,798 V t�M I 4 k W IN AMEND. NO. 3 EXHIBIT "A' Pa 2e 26 of 35 Dan Biles April 12, 2011 Page 27 of 35 Compensation Summary by Phase _ Cl�lb'�IVt�2I1� 1 �i -y. Zxn a:�• "ra'. . °3 „rs.d fir. ,rs? .� '� ;I Data Collection and Review 1.1 Project Management/Administration ement/Administration 12 656 1 9 $ 1.2 Kick -off Meeting /Workshop $7,892 1.3 Existing Data Collection $0 1.4 Existing Data Evaluation & Validation $0 1.5 Wastewater Flows $2,464 1.7 Establish rain gauge locations $0 „..k� ._�-1 r x x .�'. A�'�' I 1 uI,: IF $ 25 075 $8,610 $46 $9,580 $7,750 $25,222 $14,840 $5,960 $20,800 $19,630 $4,750 $24,380 $16,865 $2,860 $22,189 $0 $1,680 $1,680 2 Model Development and Data Conversion 2.1 Existing Model Development $0 2.2 Allocate Existing Wastewater Flows $0 2.3 Infiltration/Inflow simulation $0 2.4 Infrastructure Update $856 2.5 Large Wastewater Customers Evaluation $0 $28,685 $9,205 $37,890 $9,460 $9,205 $18,665 $12,575 $9,509 $22,084 $15,214 $10,897 $26,967 $15,990 $3,225 $19,215 3 Model Calibration 3,1 Calibration $0 3.2 Sensitivity Analysis $0 3,3 Technical Memorandum $1,540 3.4 Workshop $2,810 $30,585 $28,805 $59,390 $21,100 $26,105 $47,205 $22,290 $18,509 $42,339 $9,730 $7,620 $20,160 4 Existing System Analysis $23,010 $31,320 $54,330 5 Future System Analysis 5.1 Proposed Future Development $924 5.2 Allocate Future Flows and Create Scenarios $0 5,3 Future System Analysis $0 5,4 Develop System Improvement Alternatives $0 5.5 Project Workshop $2,964 $7,617 $7,610 $16,151 $12,375 $18,010 $30,385 $15,090 $19,180 - $34,270 $18,130 $35,723 $53,853 $9,550 $7,410 $19,924 6 Final Engineering Report 6.1 Final Report $8,407 6.2 Preliminary Planning Level Cost Estimates $0 6.3 Prioritization Maps $0 6.4 Capital Improvement Program (CIP) $0 $24,138 $23,354 $55,899 $9,385 $10,300 $19,685 $14,053 $19,852 $33,905 $14,330 $27,403 $41,733 Hydraulic Modeling Sub -total $40,513 T y I� e1 RiY li .�5. ash,. '. a 1 l,lG` e l.' , e . .r ..4 i,.�.. .: v; ., $399,297 ±., �.x� $354,852 $794,662 a�•;; 1,6 Wastewater Flow and Rainfall Monitoring a. Standard 75 day monitoring period $435,894 b. Extended Monitoring beyond 75 days- $66/day/meter $0 $2,920 $0 $438,814 $0 $0 $0 7 Manhole inspection (4,558) - Unit Price for additional =$95 ea. $436,938 $436,938 8 Topographic Survey - Elevation Data (4,998) $134,754 $112,480 $247,234 9 Training City Staff (Included in Qso Cost $25,000 Software Allowance) $31,455 $31,455 10 Supplemental Assistance - Data Gathering Allowance if authorized $25,000 $0 $0 $25,000 11 �'� ��t ^ sr� (ry p } Y.Yt =�!��k.4 ?,., 'f Traffic Control Plan Allowance if authorized $15,004 �i ? ` l ✓vLER� .Y 4 f'� j' S kl 54 ' J i 7 {' I a} k S >h `�� ��a�i;? a s .E_:��w:,ir..? �.t y � {�r.FS." 3 P.ln,• .:r� �:.. . <. . a Pw; , b� g r � � s � c asp Yg a . t�3 s n. , -} s�� d+l �S a� E � - N 1 R c 1 � i .xa'.."v��;r $0 ^' � ,[ LL��++ T $0 , �,•.. ;��.. $15,000 % { �;� �..� AMEND. NO. 3 EXHIBIT "A" Pa e27 of 35 `rSeraae�fcr,i'a„a;� -. odf Efrr r r. VoxY nF Fs.'✓rt ncA r4 -A F i6S :i=nk. w�a'f k7.:r -=rr �..r<r;s cre z �tsF:e. Rrrr. t. JXa m.:, <5 wsr'a 'TSe IG�: h1KE" ,c I y S' :LFI'1r:= r Dan Bites April 12, 2411 Page 24 of 35 Attachment B Contract Amendment No. 3 Broadway Service Area Broadway Service Area I' '7 MANHOUR AND PEE ANALYSIS a`'... . P11 I.IN1�A{slALl��I 94 MR 758 4529E CLIENT: CITYDF CORPUS CHRISTI ManANes InV. 1 509 11.2% PROJECT: WASTEWATER SYSTEM MODELWO Flow Meters 16 20.3% Rain Ca G 18.2% Lift STa. 16 1 162% DE5CRPTKNI Sr.Enginaer or I S F pn_ CTSTeeh DewLPader 7aehegd.,. CLERICAL COMTRAC_TOR Hon LABOR TAS %TOfAt RATE TASK l: ModelBLadog 154 I1— 10!01 $17799 169. Tad $19r.90 1h..1 Tote) l[GIN lh..j Tad 56A00 Ilia iced 532190 Iha, I Tod 11-1 MW Tula! [ re Taiel 1.1 Prgeclhlanagenladd Raves 7 Sign 6 $672 $2870 $4' 12 %ic6l tf McMigANakehep 1.31 Uala Cdec6m 2 $1,078 $2,640 51.370 ,718 51,37 1A FrdrrV rl VAit Fm S1,370 $11 15 woaeo.dOr FToxs 1 $.OB 511M0 5134E 1E 9— ARandJl Mk &-i-q 9 $1-%% 58 56,441 60 48W 30 51,930 300 515,290 600 319,2W 16 3461 b31,314 193,1 17 EsIAAshRan GargeLdrafnns S58p - TASK 2: Polmilletim L-n a bnn Z1 Easfnp MoLM DinvkVnent 52 32 A Eid"'AWFJ— Q.536 U.376 23 Sun y2a 24 HmAuC3ee Update 2 W14 SLOB YJ 25 LargaWW0,W_els Eild(WW 9975 937 TASK 3: Model CObw I 3.1 Gibrlbn S7,S75 $7,97 32 Smrs ,Aj Mattes 57,2-5 57,27• 33 Tad1R4141anroraMUa 1 $154 56063 551'17 3,1 T. 1: Fxufo:R SY11C11 A1etye 2 2 M 52.510 1190T0 f2, 510, TASK 5: A". %V— s. 5.1 Pmpored FLt- bPn ' 1 $154 5254 52,704 52,1&� FaAW 1`1 n8C� 14 3 mkW 55,910 15,91 53 Fulu SyO— Arl,*M x,910 ss,S1 5.4 SysienilavemenlNklrsllives 112JW3 512,043 5.5 PrgedYVwlolwp 3 '1462 57,4711 5600 ZAK T2ASKG: final Enlpnaa9ng Mu0on 5.1 F..I R..T..a4 G 5524 4 WWI ST.= $9152 E2 LWnn y Pla—ffg Le& UOV.. ItArrales M000 14 6.3 Prim atm Mp 880 56,590 $6,590 6A CePg4i Mrpnnanlart Pro.0rxr1 {i.W] A 577M 37.77. ASK7: Menl�rta hrcpwr0a. - 5.!21 40 FAAW 37 53,474 25 S7,625 330 21,120 330 10.580 5 $174 $6,57 548,fal TASIt 0: TgaxWghk --y .. ClrrHam D.0 I 338,000 ;30,000 TASK 9: Cary SmVITralnllp TASK 10: 9q,0*rw*WAsli"me TASK 91: TraW LOntraPlan All S325 S2,3G0 83, 32.36E idyl ca SG,716 1Rd 511,619 11R 512{26 rT S3,355 00 1 540,330 1 410 1 $ 7W 73 5630 $1413091 SeTA07 I S79B)9 ESTIMATM TOTAL COST 5295,218 Sub - contractor: C . COYm;Re6inet &ntiektei �Tlgiueedllg, 1..3 ff fNGINEERSiPCANNEA5 5Sr[iVEY0R3 AMEND. NO. 3 EXHIBIT "A" age 29 of 35 Dan Bites April 12, 2011 Page 30 of 35 Attachment B Contract Amendment No. 3 Greenwood Service Area Green%wd Service Area MANHOUR ANO FEE ANAL.Y5i3 SWYey" 943 1,- OUENI: CITT OF CWPUSCHRISTI 11 a1•,A M1LA 4.YS1S'"' }AmIl e1H _ 943 Zu.1. PROJECT: WASTEWATER SYSTEM MOOELTNa � vaa r„r.�F- :.,acw�a Flagl 17 Zigy Ran [3a 5 iB 2% Inl'uo. 1Y T2.116 T1FG- iI1PTe]N Sr.F �trr.nr Cr F N� Pros t Figi_ �LSTarh C-I �-A. Tnd..i&- 41 FWAJ CDN SINi TRACTOR -W 18F4C]R T&" TOTL1 RATE TASTI 1: 1NodeF 91ekS.g 5157 Ihs. Tad $117% lie. Tab1 "n7.08 I1ra Tad 161.00 If... Told VAOO n.. lord 922M Iha, 'T-WI SM.W 16T. T.W .e T.W 1.1 Prgod 3,E,ejranndL Revie7+ 9 51.06 9 rim 55,2Gd r.2 KAY -Ofl Meer 9 37;366 52A40 5506 54 1 z Esssrig TJrlacdec- +y}0 32,77 1J cn d,.� sTog Dea v�T� s7,77u $2,27 LS Wad..Avfka 3 $02 ;11H1r 31. 1 E Float. Ita+Feh MedRing h S1.3W 67 SG.J14 46 VOA 3O Mi.= 3eJ 31 ,W 6W SiJ.200 1G 540' $WWI 4VA.61 1. I F6rO*h RWn C-tw LocW o - - TASK 7: PgxW-4're, -tS.,e ' 2,7 ' Model D-d4 red SA 6E& SI; 22 Afkc W E*A,,s WW Fos Sy 2.3 6l(RPdi01Wd W 5i1]aahDn 34,E65 34 2.A 14Trasnvch.LkdA. 2 5214 56MS 9G.2A 35 LarjP WiGmbr EvAWo0 rA5K 3: 9,dM C.M.Atk. 31.6m 31 a -1 Gbd:vr 534554 $14 3.2 sgoa"ziz �iY SA3.7FFi 513.75 3.3 Tu hnkd Mamra 6- 2 530' x.55'2 3.4 WvWW 3 5482 57540 TASKQ � SS.WV+aA h+U 314100 514,1 TASKS: F1hae Syslen A.xlyek 5.1 Prgmd Fu D -dw..4 5164 $3,070 53R - 1 Wcral 5. ehkLw'km 9 C<ea� St•5+a� 57 Sr,S 5.3 NA -Syrk Arapie SgApO Sg 5.4 Oernbp 5yeNn3lmp <aanerrt rVWnleves h S N*j I Wak.hop 3 5652 51G,530 52.470 55.5 57„ TASK 6: F7nN Esgh. %q Repan R 1 FBI Rgrz1 R 51.7v 59,100 5113,3'1 fit RdYrerieT Ptnnmylmdt3m Esl:rol� S S 6.3 pdoam6m Maps Ss,?t311 fs 6 Capad F^F+m• Tp 3m ICpl 519 0 513F.� TASK 7: Mmholo b5" 1- 8 Si,232 71 $7,952 W $6,429 32 S1.952 G2a 40.192 Q8 20,fE 8 5332 $12,196 S -012 TAME; Tnpogrnpl.io 3l.rrry- Ermlriion Lro[a 5+17,4EI0 543.48 TASKS: Cq WIFTWA TASK 14: SarppI -,Ad A9GINR.ItlC 5,378 55. I W 11 Ir Ik Cmrva YIar.ASk w 53,1451 55 59,770 542 515.90' W7 515.729 62 53.7&2 TM 159.392 1728 $]4,796 2A 5696 'L''IDS74 557.G52 E571MAT£6TOTALCCIST 53,E ie03;37_ $403.336 Sub- contractor: `'� � �a3rn;itidTptek &Gafkeirez. ET,gmcerlug,T.. r. G MIMS•PWkERS- WRMOR5 AMEND. NO. 3 EXHIBIT "A" Pa a 30 of 35 1 .. Dan B11e5 April 12, 2011 Page 31 of 35 Attachment B Contract Amendment No. 3 0so Service Area Smv MH cru EL Lf.4 i MAINSD Ks� 1aAe ssw^^uuac. ^.x+ F€rAVMpdIe Hain L€K Sl i> OsoServiceArea MANHAURAND FEE FN/€LYSS CLIENT. CRY OF CORPUS CHRISTI PROJECT: WASTEWATER SYSTEM MODELING 2,22; da i°L 7,157 d7 Al 08 3.5 d9G, '7 231°6 224 1 24.2% IIESCRBTI1414 Sr. Engit r P7TO NGR En0L1rea Li;D [its loch C"Leader lahnicim �LLEWYTX SUB r(7NTRA[.TM4 NONLABOH 'TASKTOTAL WE TASK 1: IAodet BuWring 1.1 Pl*aMaaapel*MARW&A 11 e;b00 MMjNff0ubM 5154 H.. 27 72 Towl 53.395 $3355 5117.10 Hra< 22 7am1 62464 $1147,01) "m, Tau! S61Aa Hm. Tow! $61.60 Nm, Tew7 357,06 114rs. Tam(_ smo Nes. Tom! Ei 625 340,6W M.54+7 Fr rrsr: Tatsi L U6,452 S9 . 13 9TS+.fi t:aterson FIVAW 310,4 1,4 Enatina Bala EvaluonRbalda€on 8t6 sts 1.5 WasleealerFbm 7 51,075 31 000 315JG7 1.6 FhP 8 R>nbll h'iag 16 ¢,464 107 511,424 140 314,58€1 50 53.050 454 $26,800 940 57,0,866 24 1696 S2.3ft7 Y'0! 5152,677 1.7 E bi&h Rain Cr W Lacalwrs TA5K2: P".A d—PraloUlvn 2 -1 FnTbu9lAodr.4 Devempmerd 41M 522 27 AS-0 E�#sTag I NN Fbm 57,080 $7, 13 p6Wa0on41t€wSmuUm N220 : wtp 2} tnhahud .Updale 2,5 Lvw WWCWro EJ-1-1 2 3774 57.,400 514.740 $13,146 514,74 CASK 3: ModelGftrmrmn $m 4 534 4411 S3d,4 31 So_NayArul _ iETO 3] Te5l." rAalArandam 4 $4 in 3!8,956 sti 34 Warlagnp 7 3 €,078 U.854 M90 $W TASK 4: Exis"System Analysis sit ,w $18, TASK 5: RKm Syi 4em Ar Wv*t 5.1 Froposed Fulmi DwakpwN 2 $308 515 56.574 Sf FAA S7 AbcM Rhm Fb i &CmW Smwiks 61p 55,5 5.3 FuW_ S,'V Audyvia I W $9.2 5.4 D-10W Sr n eiP°''°'nen &Wr R° 51' 440 113,44 SS F1yxt .k.!.? 7 stars 57P31 I AS 0: rmltughmQ*,q WPM SFJ3 6.1 fud Report 16 $2772 4 1428 576 119, 6.2 R - Pi Lvel Con€ Estimates 57490 $3,4 63 PnUrtratan MW Sfi.32& $5,32 64 CaAUkWDVW r4PraWUn(W) 5.1336 TASK 7: Mmhol. AKpr Vi le $'1,777 172 S19X4 145 515,515 75 $4,575 4373 57,$72 1,535 4%,120 16 5572 1O '577,873 $2p7�13 TASK$: Tgwy%A&Survey- EleratbnD t. 3106,344 4.100,3W ASK S: 43ty $ladt Tralnm9 36p56 56,4 Alowaene €orUly rlyd. Rortd !!o mom 115 TAU 10: Supphimilel Acsisaartoe TASK Ti: TestBc Cum Plan AlbwAiKe $10,9.90 56577 310 $6.41 123 41 @943 246 473151 1291 531 197 125 57625 1613 JS116= 577.920 4: 51,216 1 5643,970 Si05kT1 5636301 ESTIMATED TOTAL LOST 4836,307 Sub-contractor: engineers I architects. ( contractors AMEND. NQ. 3 EXHIBIT "A" Pa a 31 of 35 Dan Biies April 12, 2611 Page 32 of 35 Attachment B Contract Amendment No. 3 Allison Service Area C Survey MH IQEI.INEA7IA.IYSIS ' Marllitie . ^ — 9,rc =c,rne M w ldelem H21n GS' es L9tStN. X 571 11.4% Allison Service Area 7AANHOUA AND FEE ANALYSIS CLIENT: CITY OF CORPUS CHRIST] PROJECT: WASTEWATER SYSTEM MODELING 5Ti 12.5°6 6 T.E% 5 13.2% 17 17.2% PESCRIPIIOH Sr. Eng'vieer lMGR� � t G €5 red1 Clbwleader Fed�niarur CLERICAL COP SUB NON LABOR FASN F6T41 RATE ASH 1; 74wdd&IOdI 5751 Hra, I Iolaf 1312.Otl Hr*, iall S187A0 tkt I lain 9a'Im His. IdEal $8c00 "M. I'MI 332.00 HM Ida1 tft.1 M09 104W t se E as iohl 7 $773 5 Fa S2A70 $4, 1? fCirilNf alartl' rxSrfr� S 37711 .57,570 S•� 1.3 Ex.Sq Dam Cbtkdien 7:.2.32a S2 14 10 L1,11 1.5 Wadtxatar ws Fh 2 M wS0 51, '1.E F[ &Rxirla[MaiimV , 4 SG16 22 52,467 30 53,210 12 ST32 17D 56,4M 200 S6400 4 5196 572879 53281 17 ramU4¢k Ranr rprl y'nnc 5660 s ASKZ P."WLu N-j -tf— .T Ex9slirg klaW Oeydogran 32015 3201 Alloc�le 5> "WW Flm InTlkalfadlydkxSAmA w 52,013 52095 52.17 $201 A m5asiusaxe Cpdalr 7 521E $3.023 7:1,23 .i Lawww Llalaana^s Enk.F. 571E 772 1ASA 3: tA" L .1 con.Aw 76 55,97 7 q.,W V A s JY— 16 0 %A7, 33 T-1hri Rnnwr3dun i SiW $4.007 55,041 4 Wax•am 2 8904 62,540 7r7. pSK4: Ex4ka &kg SYsian AmlpsH rASH 5; FLk Sw m Aim Frais S7,15C 57,1 :1 Pr powd Fora O—bp —a - 9 S154 S1 690 5274 .2 A&o riaar rh+ aCexe arenxri» $4.510 $4,51 3 FpI1ep 9/sknlAneljsls 54 ?7C $4,7 4 Oerdop 9laiem M1Pmrernenlli7laiialims 48.15c 56.1 5 Prged Ww0IM 2 5303 S2 7C $277 TASK 6: Fir.[¢rgi.miry Pop orr .1 Fdri R"�l 4 $ale 0 40 S6,S54 $7,07 `.2 H�imriaryF'fvmng La+ailaslE9+ri�fes 72,400 S4 3 P�io2irafim hiapa $4,691 S4. & !.apm.l [nYRwenw.d Pmyr— (CIP) $6,033 SS,R1 TASK ?: Srmrwle k•ape[iiaa d SG14 40 54,483 34 53,63R 1T $7,037 360 '-24,320 380 12160 4 $11G 9,7,977 SS3,T TASK a: Tbpnpaphm butyl - Elwaekn Dlaa 53Ia10 1, 731, ASK 9: Ctt &off Traiain TASK 10; Siq*eme %0I AW91m, a S2 y2 TASK It Tniac Control Pin JLI&—nrn 53,61'5 37, 30 SE,£5zo G? 5;SM MG y7,D72 29 11,769 400 ;70 ,720 MG JaD.5 A a 5232 51111,;4 SA -62. 3217,121 ESTIMATED TOTAL COST $213,121 Sub - contractor: C A GD)m,R&mtl&GUfferra Eni6eiftl,L. P. �" '�' @ t01XEERS •,PLII�IkERS!SIIRVEY�IRS AMEND. NO. 3 EXHIBIT "A" Pa a 32 of 35 Dan Bilcs April 12, 2011 Page 33 of 35 Attachment B Contract Amendment No. 3 Laguna Madre Service Area truer a �o Laguna Madre Servtce Area MAINHOURAND FEE ANALYSIS CLIENT: CITY OF CORPUS CHRIST[ PROJECT- WASTEWATER SYSTEM MODELING T,5*16 249 5.5% 0_3% ® 3� % MIN ©mm�m ®oom�m� ©ma,�et� Sub - contractor: engineers: I.architects I omtractors AMEND. NO. 3 EXHIBIT "A" Pa a 33 of 35 Dan Biles April 12, 2011 ' Page 34 of 35 Attachment B Contract Amendment No. 3 Whitecap Service Area Su MH ri i Ei:ir:1 s,Nh Y 1.S SIanllok fns. n,wc:�:srcx Ftlw Strlrxs Rain gauges L31 Sta. !' 4 � Wbita ,ap Service Area MANi10UR AND FEE AHALYSIS CLIRWT CSTY CW 00APU& D$IAISTI PROJECT: WASTEWATER SYSTEM MODEUNG 12C 2.5:6 124 28% 5 (0% 5 15.2% 13 1 77.2% DESCR$P11ON r.Ew Sno MG � f"91 GISTeih Derr Leeds rKbOxim CLERICAL C(3NTRACT[M HON L.AUM TASK TOTAL RATE $151 SIUA 107 -00 UVIO U4 00 $32.00 $20.09 his. TOW ti's, Tate! Hre. total His. Tuw1 Ws. T.7.1 HN. Tole! its. 7dtl E Fir Total ASN1: M.,W8u41din8 90.00 1.1 Pr dhla:tawr*d8ReAM 1 $15$ 1 $312 $3,67091 $3. 12 K.A OR - 1 315E #1.2a(* 51 i! tmlug UHa[btledm 51A6ti.W 71 to Esi ltg r]ala Eva'�aSanBVe€dalron Si,2:W.0J 61 1,5 v0skwowflwa 1 SiSd S73x.fYJ - 15 Finn aFailfeS SlolAO" 17 F $sb 1}an 6app L--A— 3 5562 16 57,015 71 52.566 9 5519 Ail 15,763 160 L+,:57 3 $67 St%03 SO.M 510,733 426.0m IA9K Y: Fopu7>mle[r!•roiacnons 1 Edelig k5orld [kreiop+rrenl x2,4161,0 x2,41 AkKats EA*Mg MY Fbm 56is5F7 � InA$rnllardrltOwSMtuk3on A InFraalnuhrtalgxUle 0 r0 578G.110 x597.60 y 5 . Z 5 Loge WSYt;uslomvlswilzllon S:M9.lF1 y- T ASK 3: Weld C.11,. lon 3.5 C+hIrAM 52 .07 R. 72 ffloykwl3b 3 T.O.-li4nnorarrdsu 1 5156 5519AP S7S0307 1151 57.65 S.4 Wxksfry 0 30 51,218Ah1 57;21 ASN4: ExioWr7 SW=&ulpm x AILIn9 $1,61 TASKS: fume 5rslem MO(4s 59.00 5.1 HvFr d Fuhar 9evekryrrexll 0 40 $=.03 )locate FU Finis &Civase 5sea6. x52500 5a Fitma Bra AaratAh D- ackpSy.kminpro+cmoal Mknrl5.c x1,35El� 51 'LASK 5 PA*?ddWorkshap 0 70 5721897 $1.21 ASKS: Final Eeglneniny R-,-4 ? FaA Repo:1 IT A 1 5154 0 SO 52,3298) 2 PeltnaNR rdrV LeMC EsWtWn 52mm 3 Nd ft lrr� Maps Sfi oo 4 Captal ImmVen9d Pro9ran P W P3 7'. Merdwlr M.p.A., 1 5164 U 51,12) 6 366E 6 5366 56 5.5m 55 2,792 1 229 SG.ID 57612 712 TAStt& Topnpaphk Strawy- Ekwdonlle4A $13,796,07 £17,1 (ASKS: City Stall tlniAn x6.(p ASK 10: A.Pplameanl Aasalaoss- x700 E TASK 11: Ti&Wk Con7o1 Plan Aiblleare 5F95 5 $1,3% 29 43,240 32 57,424 15 551§ 176 51 i,ffi4 266 r68,52 4 2:116 742= - .0 W3,546 784, ESTIMATED TOTAL COST *rtl4,79 Sub - contractor: engineers., architect I conVador6 AMEND. NO. 3 EXHIBIT °0 Page 34 of 35 Dan Biles + 1 April 12, 2011 Page 35 of 35 Attachment C Contract Amendment No. 3 Sanitary Sewer Overflow Initiative Plan Development City -Wide Sanitary Sewer Hydraulic Model SCHEDULE: CONTRACT AMENDMENT NO. 3 Braodway, Greenwood, Oso, Allison, Whitecap and Laguna Madre Service Areas Phase 1: Broadwav, Greenwood and Oso Service Areas Week No. Start Duration (Weeks) Week No. End ACTIVITY 1 1 2 Kick- Off Meeting 1 Workshop 4 31 35 Manhole Inspection & Survey 13 22 35 Flow Monitoring (August 1— Oct. 14, 2011) 4 31 35 Model Data Collection 22 30 52 Model Development 35 30 65 Model Calibration 65 1 66 Workshop Steady -State Model — MILESTONE 1 52 22 74 Existing & Future System Analyses 74 1 75 Project Workshop — MILESTONE 2 69 9 78 Tech Memo/Final Report 78 4 82 Training Workshop — MILESTONE 3 82 0 82 PHASE 1 COMPLETE Phase 2: Allison, Laizuna Madre a W hitecap Service Areas Week No. Start Duration (Weeks) Week No. End ACTIVITY 1 1 2 Kick- Off Meeting 1 Workshop 2 20 22 Manhole Inspection & Survey 26 17 43 Flow Monitoring (August 1 — Oct. 14, 2012) 4 18 22 Model Data Collection 22 21 43 Model Development 43 13 56 Model Calibration 56 1 57 Workshop Steady -State Model — MILESTONE 1 52 17 69 Existing & Future System Analyses 69 1 70 Project Workshop — MILESTONE 2 56 21 77 Tech Memo/Final Report 77 0 77 PHASE 2 COMPLETE AMEND. NO. 3 EXHIBIT °A" Page 35 of 35 ewb SUPPLIER NUMBER TO BE ASSIGNED BY IZT_?_ PURCHASING DIVISION City of CITY OF CORPUS CHRISTI Corpus Christi DISCLOSURE OF INTEREST City of Corpus Christi Ordinance 17112, as amended, requires all persons or firms seeking to do business with the City to provide the following information. Every qquestion must be answered. If the question is not applicable, answer with `NA ". See reverse side for Filing Requirements, Certifications and definitions. COMPANY NAME: Pipeline Analysis, LLC P. O. BOX: STREET ADDRESS: 13661 Jupiter Road, Suite 307 CITY: Dallas FIRM IS: I. Corporation X 2. Partnership ❑ 4. Association ❑ S. Other ZIP: 3. Sole Owner ❑ DISCLOSURE QUESTIONS If additional space is necessary, please use the reverse side of this page or attach separate sheet. 1. State the names of each `employee" of the City of Corpus Christi having an "ownership interest" constituting 3 % or more of the ownership in the above named "firm.' Name Job Title and City Department (if known) NIA 2. State the names of each "official" of the City of Corpus Christi having an "ownership interest" constituting 3% or more of the ownership in the above named "firm." Name Title NIA 3. State the names of each "board member" of the City of Corpus Christi having an "ownership interest" constituting 3% or more of the ownership in the above named "firm." Name Board, Commission or Committee NIA 4. State the names of each employee or officer of a "consultant" for the City of Corpus Christi who worked on any matter related to the subject of this contract and has an ownership interest" constituting 3% or more of the ownership in the above named "firm." Name Consultant NIA 79 ?zQ EXHIBIT "B" Page I of 2 a - ' � 3 • r FILING REQUIREMENTS If a person who requests official action on a matter knows that the requested action will confer an economic benefit on any City official or employee that is distinguishable from the effect that the action will have on members of the public in general or a substantial segmcnt thereof, you shall disclose that fact in a signed writing to the City official, employee or body that has been requested to act in the matter, unless the interest of the City official or employee in the matter is apparent. The disclosure shall also be made in a signed writing filed with the City Secretary. [Ethics Ordinance Section 2 -349 (d)] CERTIFICATION I certify that all information provided is true and correct as of the date of this statement, that I have not knowingly withheld disclosure of any information requested; and that supplemental statements will be promptly submitted to the City of Corpus Christi, Texas as changes occur. Certifying Person: James H. Forbes, Jr., P. E. Title: President ('Ape or Print) Signature of Certifying Date: Person: DEFINITIONS a. "Board member." A member of any board, commission, or committee appointed by the City Council of the City of Corpus Christi, Texas. b. "Economic benefit ". An action that is likely to affect an economic interest if it is likely to have an effect on that interest that is distinguishable from its effect on members of the public in general or a substantial segment thereof. c. "Employee." Any person employed by the City of Corpus Christi, Texas either on a full or part-time basis, but not as an independent contractor. d. "Firm." Any entity operated for economic gain, whether professional, industrial or commercial, and whether established to produce or deal with a product or service, including but not limited to, entities operated in the form of sole proprietorship, as self - employed person, partnership, corporation, joint stock company, joint venture, receivership or trust, and entities which for purposes of taxation are treated as non - profit organizations. e. "Official." The Mayor, members of the City Council, City Manager, Deputy City Manager, Assistant City Managers, Department and Division Heads, and Municipal Court Judges of the City of Corpus Christi, Texas. £ "Ownership Interest." Legal or equitable interest, whether actually or constructively held, in a firm, including when such interest is held through an agent, trust, estate, or holding entity. "Constructively held" refers to holdings or control established through voting trusts, proxies, or special terms of venture or partnership agreements." g. "Consultant." Any person or firm, such as engineers and architects, hired by the City of Corpus Christi for the purpose of professional consultation and recommendation. = EXHIBIIT `B" of 2