22 Executive Park, Suite 200, Irvine, CA 92614 (949) 655-3900 WeAreHarris.com October 18, 2024
Art Cervantes
Engineering Manager
Capital Improvement Program
City of Rialto
150 S. Palm Avenue
Rialto, CA 92376
PROPOSAL FOR STORMWATER CONDITION ASSESSMENT
Dear Mr. Cervantes:
Per your request, and in accordance with the Profes sional Services Agreement, Contract #1210635000, Harris & A ssociates (Harris) is proposing to provide civil engineering services for the preparation of a stormwater condit ion assessment for the City of Rialto (City). Harris is honored to partne r with the City on this critical infrastructure pro ject.
PROJECT UNDERSTANDING
An asset management system is crucial for streamlin ing and reducing life cycle costs to operate and ma intain critical infrastructure. The first step in developing an as set management system is to conduct an inventory of the existing infrastructure assets, followed by an evaluation of the condition of the assets. The condition assessm ent is a critical step needed for asset management which determines and do cuments the condition of existing assets. The infor mation gathered will be used to determine the remaining useful life and rehabilitation and replacement options.
In September 2024, Harris completed an asset inventory of the City’s existing stormwater drainage infrast ructure. We are pleased to present this proposal for the next criti cal phase: the condition assessment. Once completed , the stormwater condition assessment will identify, cost and priori tize critical components needing immediate capital improvement attention. This proactive approach will help preven t costly maintenance and capital investment due to asset failure, thereby preserving the City’s limited resources.
Harris will complete an assessment of the recommend ed assets and prepare a condition assessment report detailing the findings. The report will include a background of t he inspection types and methods, a rating system fo r defects based on National Association of Sewer Service Companies (NA SSCO) standards, and a narrative of the types and c haracteristics of defects found. It will also provide an explanation of potential repair types, prioritized recommendati ons for pipe and structure rehabilitation, replacement, and/or maint enance, and a cost estimate for the recommended rep airs. Additionally, the report will feature a tabular list of all pipe segments and storm drain structures reviewed in the assessment, including condition ratings, defects, and other system attrib utes, as well as maps showing the condition assessm ent findings and recommended repairs.
As documented in the stormwater asset inventory, th e City maintains approximately 40 miles of storm drai n conveyance, with the following breakdown:
• 80% are reinforced concrete pipe (RCP) or reinforced concrete box (RCB) • 8% are corrugated metal pipes (CMP)
• 4% are concrete channels
• The remainder consists of clay, corrugated high den sity poly ethylene (HDPE), and polyvinyl chloride (PVC) pipes
Harris & Associates, Inc. Proposal for Stormwater Condition Assessment 2 o f 4 During the preliminary engineering phase, Harris re viewed record drawings, GIS inventory data, and ava ilable history of inspection. Based on this review, Harris provided t he City with a list of recommendations for which st orm drain assets should be investigated. The criteria for these reco mmendations is based on risk and consequence of pot ential failure due to size, material, age, and any known condition issues with the asset. Harris used the GIS information gathered in the asset inventory phase to prepare maps broken down by main tenance zones showing what will be assessed.
Harris recommends assessing the following, as shown in the attached maps and tables:
• Corrugated Metal Pipes (CMP)with a diameter of 8” an d larger (which equate to 16,115 lineal feet) • All Pipes with a diameter of 36” and larger (which e quate to 132,515 lineal feet) • All Pipes older than 50 years (which equate to 1,107 li neal feet) In total, the proposed assessment covers nearly 150 ,000 lineal feet, representing about 70% of the Cit y’s storm drain system. The pipes to be assessed range in diameter from 8 inches to 120 inches.
The following outlines our proposed scope of servic es and estimated fee and schedule to deliver the Stormwater Condition Assessment. The proposal is informed by our team’s proven methods and successful experience in conduct ing similar projects. It has been developed in collaboration wi th our subconsultant, who possesses significant exp ertise in stormwater pipeline inspection.
SCOPE OF SERVICES
TASK 1 – Kickoff and Field Work
Task 1.1 – Kick-off Meeting
The project will commence with a kick-off meeting w ith City staff. The purpose of the project and the desired objectives will be discussed / confirmed. The project schedule will be reviewed, and lines of communication will be es tablished.
Task 1.2 – Pipe Inspection and Assessment
Harris will assess the condition of pipes identifie d in the priority list and collaborate with our sub consultant, National Plant Services (NPS), to conduct in-line CCTV inspection to capture 360-degree images of the walls of the pipe lines. The condition assessment will be completed using NASSCO Pipeline Assessment and Certification Program (PACP) methods .
Pipelines will be inspected without pre-cleaning. I f any pipes cannot be properly assessed due to heav y debris or obstructions, they will be flagged and documented i n the assessment report. In such cases, the City wi ll have the option to engage the Harris team to perform cleaning, followe d by remobilization and re-televising, utilizing Ci ty-approved additional services.
The NASSCO PACP Quick Rating System (QRS) consolida tes structural and operational/maintenance (O&M) de fects within a pipe into a simplified score, helping to streamline the interpretation of data. Defects are typically graded on a scale from 1 to 5, with higher numbers indicating greater severit y. A grade of 1 reflects minor defects, while a grad e of 5 signals the most significant issues. These grades are determined by factors such as the seriousness of the defect, the extent of pipe damage, the percentage of restriction to flow capacity, or the amount of wall loss due to deterioration. The Q RS score is presented in a CCTV report along with a pipe graphic that illust rates key information: the defect's position, dista nce from a reference point, rating severity, and its continuity along th e pipe. This system provides a clear and concise way to prioritize maintenance or repair actions based on defect sever ity and location.
The Harris team will analyze the CCTV video and ins pection reports for those pipes identified to have a QRS rating of 3 or greater, identify any defects, and provide the reha bilitation method recommended for each pipe segment . This information will be transferred into the City’s GIS database in order to create exhibits to include in the condition assessment report.
Harris & Associates, Inc. Proposal for Stormwater Condition Assessment 3 o f 4 TASK 2 – Condition Assessment Report
Task 2.1 – Draft Condition Assessment Report
Harris will prepare a draft condition assessment re port of the findings which shall include:
• Background of the inspection types and methods
• Rating system for defects (using NASSCO standards)
• A narrative of the types and characteristics of def ects found • Explanation of potential repair types
• Prioritized recommendations for pipe rehabilitation , replacement and/or maintenance • Cost estimate for recommended repairs
• Tabular list of all pipe segments reviewed in the a ssessment. List shall include condition rating, def ects, and other system attributes.
• Maps showing condition assessment findings and reco mmended repairs Task 2.2 – City Review Meeting
Harris will meet with the City’s operations and eng ineering staff to discuss the review of the draft r eport and incorporate any comments.
Task 2.3 – Final Condition Assessment Report
Harris will prepare the final condition assessment report, incorporating comments from City staff.
Task 2.4 GIS Integration
Data gathered during the assessment will be incorpo rated into the City’s GIS database, including:
• QRS Rating
• Reference to location of CCTV files
Task 3 – Program & Project Management
Task 3.1 – Program & Project Management
Program and Project Management Services (by Harris) include: Overseeing project coordination, providin g general consultation with the City and related stakeholders , overall On-Call contract management, coordination with the City, subconsultants, and other stakeholders, performing scope management, cost and budget management, sched ule management, overseeing subconsultants, as-needed in ternal progress meetings, administrative duties (i. e. correspondence, invoicing, etc.) and other miscellaneous activities required to execute this task.
Deliverables
• Final condition assessment report with recommendati ons, costs, tables, and maps • Copies of NASSCO’s PACP reports and videos of storm drains prepared to NASSCO standards • Presentation on findings to the Operations and Engi neering Divisions Assumptions and Exclusions
• The goal of pipe rehabilitation is to address the c ondition of the pipelines, and not capacity issues. • The storm drain repair plan for each pipe segment w ill include the least intrusive rehabilitation meth od using trenchless technologies. Based on our previous stor m drain lining project experience and extensive experience utilizing trenchless technologies we will analyze a nd propose repair methodologies for the City’s cons ideration that are not intrusive and will maintain the existing fa cilities. • Approximately 150,000 linear feet of pipe will be inspe cted.
Harris & Associates, Inc. Proposal for Stormwater Condition Assessment 4 o f 4 • Harris assumes 65% of the total linear feet of pipe s that are inspected will have a QRS of 3 or greate r and will be analyzed in the assessment report.
• During CCTV inspection, pipes will be televised onl y, not cleaned. Pipes that cannot be properly asses sed due to heavy debris and/or obstructions will be flagged an d documented in the assessment report with a recommendation for cleaning.
• High-definition video will be provided for pipes 36” and larger.
Additional Services
An additional services budget of $65,000 has been allocat ed for cleaning, which may only be used with prior approval from the City. While this allowance is available for cle aning and remobilization, this estimate may not cov er all associated costs.
The full scope of cleaning requirements will be det ermined once the list of flagged pipes is finalized , and any cleaning activities will proceed only at the City’s directio n.
PROJECT SCHEDULE
Upon Notice to Proceed (NTP), we anticipate complet ing the pipe inspection and assessment within six m onths, followed by the condition assessment report within four months. The total anticipated duration for the project is ten months, assuming no unforeseen circumstances impacting the project s chedule.
PROPOSED FEES
Fee – Time and Materials, Not to Exceed Cost.
The following are a summary of the not-to-exceed fe e to provide the previously detailed scope. A detai led Fee Chart is included on a separate page for your information an d use in evaluating this proposal and shows the hou rly breakdown of all of the major tasks. In accordance with the Professi onal Services Agreement, Contract #1210635000, all subconsu ltant charges are subject to a 10% markup.
TASK 1 – Kickoff and Field Work ............................................................. $790,537 TASK 2 – Condition Assessment Report ................................................. $82,894 TASK 3 – Program & Project Management ............................................. $19,000 Additional Services Allowance* ............................................................... $65,000 TOTAL .................................................................................................. $957,431 *All work performed under additional services allow ance will require authorization by City of Rialto.
We appreciate the opportunity to assist the City wi th the implementation of this very important and mo numental project. If you have any questions or concerns regarding this p roposal, please feel free to contact me or Jennifer Scott (619.273.3780, [email protected] ) at your convenience.
Sincerely,
Harris & Associates, Inc.
Mark Nassar, PE
Vice President, Program Management
(619) 200-6442 [email protected]
Attachment: Fee Breakdown
Cc: Amparo Corona
CITY OF RIALTO
STORMWATER CONDITION ASSESSMENT
TASK / HOUR BREAKDOWN
Work Task or Item Description HOURS FEE HOURS FEE HOURS FEE HOURS FEE HOURS FEE HOURS FEE HOURS FEE HOURS FEE TASK 1 -KICKOFF AND FIELD WORK
1.1 Kick-off Meeting 4 $1,120 1 $219 0 $0 0 $0 0 $0 0 $0 1 $320 6 $1,659 $0 $0 $0 $1,659
1.2 Pipe Inspection and Assessment 32 $8,960 116 $25,404 60 $8,760 30 $5,220 0 $0 24 $7,680 6 $1,920 268 $57,944 $664,485 $66,449 $730,934 $788,878 Sub Total - Phase 1 36 $10,080 117 $25,623 60 $8,760 30 $5,220 0 $0 24 $7,680 7 $2,240 274 $59,603 $664,485 $66,449 $730,934 $790,537 TASK 2 - CONDITION ASSESSMENT REPORT
2.1 Draft Condition Assessment Report 32 $8,960 64 $14,016 48 $7,008 24 $4,176 8 $992 16 $5,120 4 $1,280 196 $41,552 $0 $0 $0 $41,552
2.2 City Review Meeting 4 $1,120 2 $438 0 $0 0 $0 0 $0 0 $0 1 $320 7 $1,878 $0 $0 $0 $1,878
2.3 Final Condition Assessment Report 24 $6,720 32 $7,008 24 $3,504 16 $2,784 4 $496 8 $2,560 2 $640 110 $23,712 $0 $0 $0 $23,712
2.4 GIS Integration 24 $6,720 8 $1,752 0 $0 40 $6,960 0 $0 0 $0 1 $320 73 $15,752 $0 $0 $0 $15,752 Sub Total - Phase 2 84 $23,520 106 $23,214 72 $10,512 80 $13,920 12 $1,488 24 $7,680 8 $2,560 386 $82,894 $0 $0 $0 $82,894 TASK 3 - PROGRAM AND PROJECT MANAGEMENT
3.1 Program & Project Management 45 $12,600 0 $0 0 $0 0 $0 0 $0 0 $0 20 $6,400 65 $19,000 $0 $0 $0 $19,000 Sub Total - Phase 3 45 $12,600 0 $0 0 $0 0 $0 0 $0 0 $0 20 $6,400 65 $19,000 $0 $0 $0 $19,000
TOTAL HOURS AND BUDGETS
ADDITIONAL SERVICES ALLOWANCE $65,000 $65,000
Total 165 $46,200 223 $48,837 132 $19,272 110 $19,140 12 $1,4 88 48 $15,360 35 $11,200 725 $161,497 $664,485 $66,449 $730, 934 $957,431 GRAND
TOTAL FEE
HARRIS
TOTALS
Subconsultant
October 18, 2024
SR PROJECT
MANAGER
Jennifer Scott /
Elizabeth Reyes
$280
Senior Project
Engineer
$219 NPS
TASK NO.
10% Sub
Markup
TOTAL
SUB FEES
PROGRAM
MANAGER
Mark Nassar
$320 $174
DESIGN
SUPPORT
Project Engineer
$146
GIS Specialist Admin QA/QC Manager
$320 $124