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Home My WebLink About2021-077PhaseI ATKINS INDIAN RIVER COUNTY UTILITIES DEPARTMENT WORK ORDER No. 4 SCOPE OF SERVICES W,est Regional TTP Structural Improvement s Phase I Background In March 2021, Indian River County Utilities Department (11I requested that Atkins, (Consultant) provide technical services to design replacements foi the bridges that cross the oxidation ditches at the West Regional Wastewater Ireatryient Plant (West WWTP),. To determine the scope of services requO-ed, Atkins visited the West WWTP on March 8,, During that site visit, it 'was determined that -there were significant concerns regarding the structural integrity of both the anoxic ditches and associated bridges,, "This culminated in the recommendabon to have Staff maintain 10to 15 feet distancefrorn the oxidation ditches. Due to structural concerns regarding the oxidation ditches, it was determined that the Scope of Services would be broken into two Phases as follows: Phase 1: Evaluate the current structural integrity of the overall oxidaflon ditch structure and associated Ibrid,ges. Perform vIsual condition assessment avid make a record of cliefects observed during inspection, in ting location and size of defects documented. Perform survey of the oxidation ditch under empty and full conditions to determine location and extent of any movement occurring in the walls, bridge and associated piping. Analyze the tanks based on avalHable knowledge. Determine exterst of repairs and/or replacements required. Provide options for addressing the issues that are identified and assist the ou nt iin determirsh-ig the preferred alternative. Provide a rough order of mAgnitude engineer's estimated cost for structural repairs. These decisilons will be affected by the intended use and service IHfe expected from the renovated system,. 11 1 11 111 11 LMSE, �i =7 Scope of'Siervices This Scope of Services is for technical services associated with West WWTP Structural lir,pro vements Phase 1. The sciope, consists of structural evaluations and verification calculations that wfll result in generation of options for addressing the structural issues associated with the oxidation ditch aind bridge. These options will include repair and upgrade options. 'These options will be presented at a workshop with IIRC and a final decision on upgrading of the structures will be determined. Task 01 Project Management a. General Project, Admir-milstratiiori This task consists of overafl managernent of the Project irickiding contract administration, Ibuudf,et management, invoicing, montiI status reports, project scheduling, facilitating and coordinating meetings,and coordination with IRC and the Cowisultair-it's!sur bconsultamits. u I`(M,,,s t t4l'V'71' SfTfAo isru I I tnprtmemeiplp'N Phcwse I ATKINS Oral history and initial visual observations suggest that there is significant movement of the waft of the basin. Asurvey will be performedto determine the exterit, of the any movement in the walls and/or bridges. The remelts of the survey wfli be used in Task 03 as part of thestructurM evaluation a. Survey Set -Up and Implementation The survey will begin with the establishment of 72 Monitoring 1 argets on, 27 different locations around the -tank's outside walls and crossing bridges to obtain horizontal and vertrical positions. The Monitoring Targets will be established at bottom, micidle, top of walls and along the 3 (three) crossing bridges on the top of the tank. 'The Monitoring Targets will be located 3 (three') urnes: full, empty, then full again. b. High— Resolution Scan The slorage tank will be scanned utilizing a High Resolution Laser Scanner to generate a 3-D model to capture existing the tank's features for use in evaluating any movement and in facilitating the design of any recommended structural repairs. The scan will be conducted through the utifization of a combination of robotic totaJ stations, first -order digital level with a bar. -coded INVAR rod, Fixed SicanningTechn6logy and RTK GPS. c, Survey Details A list of specific tasks and location of the Monitoring Targets associated with this survey are included in Exhibit B. The survey, is anticipated to take up to 10 working days. Task 03 Structural Component Evaluation and Data Collection a. Staff Interviews The objective of the staff interviews is to determine whatthe goals and objectives are, for this structure. Discussions will include a review of the structure's historic and current function, IR 's risk tolerance, future use(s), and long term anticipated design life. b. Review of Existing Records Corim.01tant will prepare a data request 'to obtain and.review readily available information including asbudt drawings of the ditches and history of any nriaintenance or upgrades associated with the structural components of the ditches, calct,dations, or past reports prepared for these structures... c, Structural inspection and Evaluation Cloinsultant will visit site to perfoirm a non destructive structural evaluation of oxidation ditich structure and associated Ibridge structures. The goal for irisplection is to visuafly observe and dociument condition of the structures aind record arty defects observed duriing iinspection. Photographs will be 'taken f,:)f defects observed during inspection for areas that can be safely accessed during time of inspection. The record of defects will be used as a baseline for ciiarriparison in the IQ 1101W." 14'e,!st futuire, to track changes in structure, increase in size or occurrence in defects, and identify areas requiring mitigation. Consultant will use survey of !Structure to identify location,of defects observed, As part. of evaluation, calculations will be performed to check the original design capacity usiingavaiiable information providedtoConsultant bythe County and the tank manufacturer in addition to the results of the survey, These c4lculations Will be used to formulatiethe technical memorandom outlined in Task 04 to determine if the structure still has remaining useful life or if it is no longer safe for operation. A brief surnmary of fiOcl notes and initial findings will be submitted to the client at conclusion of Task 03., Task 04 Technical Memorandum and Workshop The Consultant shall prepare a prelirrwinary technical memorandum (TM) summarizing evaluations of'the data collected and results of structural testing. The TM will include up to three (3) options for mitigating or upgradingthe existing oxidation ditches and bridge structures, a comparison of the benefits and challenges of implementing each option, and a rough, order of magnitude engMeer's estimated cost for each option. nos preliminary TIVI will be provided electronically one week prior to being presented in a Workshop formatfor IRC Staff, The Workshop wfll culminate in discussions with attendees that will result in a final recommendationfor structural improvements at the West WWTP oxidation ditches. A summary of the Workshop discussions will be created and distributed to attendees within three (3) days of the Presentation, b. Final Evaluationaind Recornimendation'TIVI Following the' Workshop, the TIVI will be updated to include review comments and to include the final recorn mend ation(s). One (1) electronic copy and four (4) draft and copies will be provided to IRC Staff. Deliver-ables Task Defiverable 3 Preliminary Field Notes and Findings . . . . . . . ................... 4 Draft Structural Evaluation'TM 4 Final Structural Evahmtion TM &,'hedule The anticipated schedule shown below is based on the weeks after the forinal issuance of the notice to proceed by the County: I J'R(, I W6,4 t#nPnwenu,,,ntS phase I Task Project Kick --Off Meeting Begin Survey Activities Data Collection and Review Structural Inspection and Evaluation Draft Structural Evaluation TIVI Workshop Final,StrUdUral Evaluation I'M .... .. .... . ... .. .. . Duration from NTP 2 weeks 4 weeks 4 weeks 4 weeks 12 weeks 14 weeks 16 weeks Qualily Coritirol Consultant will be responsible -for the professional quality of all deliverables. This shall include an internal Quality Assurance Plan that, as a minimum, provides review of all deliverables and sig AoWk V4T_rt' -,s3k_t wt-, 3-n-o-tt-, r &rr.- ;4.? y, ,eWi ig -r or calculation. Asstimptions The following assumptions have been made in the development of this scope of work, schedule, and fee: General The Record Drawings, calculations, and information on any upgrades for both oxidatior, ditches are • Data requests will be addressed within five (5) calendar days. • Workshop will be held at a location that meets Covid-19 social distancing requirements. 0 Facilities or areas to be surveyed are readily accessible. The 3D model could have some obscured areas especially from the inside's scans due of obstructions and led area to set up the scanner at the crossing bridges on top of the tank. ExidUSiODS The following items are excluded from this scope of work: • Design or permit docurnents, • Destructive inspection. • Material testing or sampling,. • Inspections of enclosed areas, 0 WC i4lesl I ( onipensation Consultant proposes to perform the work described in Tasks 1— 4 on a Fixed Fee basis with budgets between the sub -tasks and expenses being interchangeable as needed. The estimated total engineering fee including labor and expenses associated with the scope of work is not to exceed $68,562.00 as summarized in the table below and presented in detail in Exhibit A. Task No. Description 1 Project Management 2 Survey 3 Structural Component Evaluation and Data Collection 4 Technical Memorandum and Workshop Expenses Total Extended Price SIGNED: . ........... . . . . ... . ........... . ...................... . ............. TYPED NAM : Yvonne Picard, PE TITLE:Senior Program Manager Price $6,040.00 $19,814.00 $19,024.00 $20,940.00 $2,744.00 $68,562.00 CLIENT: INDIAN RIVER COUNTY SIGNED: TYPE4�AME- JoseDh F. Kescher TITLE: Chairman DATE: S/13/21 DATE: May 18, 2021 1") A8 TC) FORP,,,,4 J Attest: Jeffrey R. Smith. Clerk of Circuit Court and Comptroller IW. Deputy Clerk Atkins Cost Detail ATKINS MernliDer of tihi�::!�� SWA-av,aUn GToup Cost Proposal - Detail 1�ives� V%Ah IP slin'�r.�zuraJ 41rq�� N &w I I r3 r i R kv le i(c,, �.j, t, y F,,,,i s k, 0 iJ e a Submittal Date: Alar 06••2021 Task# Resource Description Rate Unit Qtty Extended iprice Category . . .................. 1 Project Management - -- - — ------ ..... . . . ........ . ...... ...... ........ Labor Sr. Project Manager 220.00 Hr 24.0 5,280.00 Project Manager 190.00 Hr 4,0 760.00 Labor Total 28 6,040.00 1 Project Management Total 6,040.00 2 Survey Labor Sr Project Manager 220,00 Hr 4.0 890.,00 Sr, Geornaticist 11 1,55.00 Hr 17.0 2,635.00 Survey Technidian 105.00 Hr 23.0 2,415.,00 Survey Two Person Crew 178.00 Hr 78.0 13,884-00 Labor Total 138 19,914 00 2 Survey'rotal 19,814.00 3 .......... — Structural Component Evaluation and Data Collection Labor Sr, ProJect Manager 220.00 Hq 6.0 1,320.00 Sr Eingineer IV 220 00 Hr 14.0 3,084DO Sr Engineer 111 203.00 Hr 48.0 90744.,00 Sr Engineer 1 136-00 lire 16.0 2,,176.,00 Sr Designer 11 169.00 Hr 16.0 2,704.00 Labor Tota I IN 19,024.00 3 Structural Component Evaluation and Data Collection Total 19,024.00 ATKINS Member of the SNCI avaliki Crwj�' Cost Proposal - iDetail 1� k", it'- W t AJ",A), IF' � t r" I I') F, I River Suburktal Date: Alpir-W2021 . . .......... .. . ...... Toskik Resource Description Rate Unlit Qtty Eftnded Price Category 4 Tedinkall Memor"andurn amid Workshop Ubor Sr. Pwject. Managw 220.00 Hr 8.0 1,760b() Sr.Eng:irieer IV 220 00 Hr 20,01 4,400k0 Sur Frigineer 111 201100 Hr 24.0 4,87100 Siw Engineer 1 1,36 00 Hr 48.0 6,528,00 Sir Deslgner 1] 1.69 00 Hr 20.0 3,380,04) Labor 7*t*l 120 20,94MOO 4 Technical Memoratindum amid Wotkshop'Total 20'"m"00 5 . ........................ .... . .... ... .......... Expenses . .. ..... . ..................... . .................... . OIDCs 960-00 Mileage 1.0 200 O 2W00 Car Rental 1.0 385,0 385" 00 Shipping & Postage 10 75.0 75 -CO Copies & Prints 1.0 3(44).41 AXWO ODCs 1,784.00 Supplies 1-0 1,0840 1,084.00 Mileage 1.0 700.0 700,00 Subcontract and Expenses Total 2,744.00 5 Expenses Total 2,,744.00 'ToUl Extended Price, .... . . ....... . . ......... 60,S62.00 IRIJVest WWII' Stracturvi Phase I fletailed Survey Scope Atkins North America, Inc. ATKINS 482 South Keller Road Orlando, Fl SIVC • L A1TA I IN 407.806-4108 Mernber of the SNC- Lavahn Group Indian River County Utilities Project West WWTP Oxidation Tank Monitoring Survey Scope of Services - Surveying General The services for this project will include structural monitoring of a oxidation ditch (tank) walls at the Indian River County West Regional WWTF. Atkins will establish 72 Monitoring Points (MPs) on 27 different locations around the tank's outside walls and crossing bridges to obtain horizontal and vertical positions. The MPs will be established at bottom, middle, top of walls and along 3 (three) crossing bridges on the top of the tank. Approximate MP locations are shown at the end of this document. The MPs will be located 3 (three) times, first time when the tank is full, second time when the tank is empty and the third time when the tank is full again. The storage tank will be scanned utilizing a High -Resolution Laser Scanner to generate a 3D model to capture existing tank features to facilitate the design of any new improvements by the Engineers. Atkins surveyors will utilize a combination of robotic total stations, First -order digital level with a barcoded INVAR rod, Fixed Scanning Technology and RTK GPS to collect information. Specific Surrey Tasks 1. Atkins will perform a high -order conventional geodetic survey to establish horizontal and vertical control points around the wastewater tank. The control points will be tied to the NAD 83 (2011 adjustment) of the Florida State Plane Coordinate System and NAVD 88 Elevations. 2. Establish MPs on the tank's outside wall and crossing bridges. 3. Located the MPs 3 (three) times. 4. Scan the tank when is empty from the top, standing at different locations on the crossing bridges to capture the tank's inside features and at ground level to capture the outside tank's features. 5. Once the monitoring work is completed, Atkins will remove the MPs from the tank's walls. 6. The survey deliverables will include 1" = 20' scale base file drawing in AutoCAD Civil 3D format with the MP locations, a registered point cloud on e57 format (31D model) and target deltas report. Limitations 1. Facilities or areas to be surveyed are readily accessible. Atkins North America, Inc. 482 South Keller Road Orlando, F1 ATKINS 407-806-4108 SNC -ILAVALIN Membeir of the SNC Lavalin Group 2. The 3D, model could have some obscured areas especially from the inside's scans due of obstructions and limited area to set up the scanner at the crossing bridges on top of the tank, 3, Extraction of existing features from the generated point cloud beyond what is described in this scope is not included. !g re i