Attachment A - Scope of Work~1.pdf
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- Attached to
- Department of Environmental Quality, Vehicle Inspection Program - Vehicle Emissions RSD Study - RFP
- Solicitation number
- S-34000-00014108
- Issued by
- Multnomah County, Oregon
About this file
This is a Scope of Work document for a vehicle emissions remote sensing study to be conducted by the Oregon Department of Environmental Quality (DEQ) through their Vehicle Inspection Program (VIP). The contractor will collect vehicle exhaust emission samples from vehicles operating both within and outside of DEQ's mandatory Inspection/Maintenance (I/M) testing boundaries using remote sensing equipment capable of measuring HC, CO, and NOx emissions. Data collection will occur biennially beginning July 2026 over a ten-year contract term, with five total sampling periods and corresponding analysis reports due each December. The study will cover multiple sampling sites including the Portland Metro Area (2-4 sites within and 2-4 sites outside the mandatory I/M boundary), Medford Metro Area (1 site each within and outside the boundary), Salem and Eugene Metropolitan Areas (minimum 1 site each), with particular emphasis on Newberg as a key area of interest. Each sampling period requires a minimum of four weeks of data collection from gasoline and diesel vehicles with GVWR of 14,000 pounds or less, plus identification and analysis of zero emission vehicles.
The contractor must obtain all necessary permits for sampling activities and include associated costs in their proposal, conduct public records requests to obtain vehicle registration information for commuting pattern analysis, and provide comprehensive study reports with statistical analysis comparing emission rates between regulated and non-regulated vehicles. Each report must explicitly state whether VIP's I/M program is determined to be effective, evaluate the appropriateness of current Portland mandatory I/M testing boundaries, and analyze various vehicle categories including out-of-state vehicles (particularly Washington state vehicles due to recent repeal of their emissions testing), unregulated diesel vehicles, and zero emission vehicles. The final report will include cumulative evaluation of all ten years of data with long-term trend identification and future outcome projections, with all collected data and analysis calculations to be provided to VIP in a format acceptable to DEQ and Oregon Enterprise Information Services upon request.
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S-34000-00012445: Attachment A – Scope of Work Page 1 of 5
ATTACHMENT A — SCOPE OF WORK
1. General Contractor shall collect vehicle exhaust emission samples from vehicles operating both within and outside of DEQ’s mandatory I/M testing boundaries. Data collection shall occur biennially, beginning approximately July 2026, for a total of five (5) occurrences over the ten (10) year term of the Contract.
Following each data collection period, the data collected shall be analyzed, and a Study Report shall be prepared for that period. Each Study Report shall evaluate the most recent data and identify emerging trends, using the 2022 sampling data as the baseline for comparison. Each subsequent sampling occurrence corresponding Study Report shall build upon the analyses of prior data identify emerging trends, highlight significant findings, and document any notable changes observed over time. The final report shall include a comprehensive analysis of the data collected during the final sampling period, as well as a cumulative evaluation of data from the entire ten (10) year period. This final report shall identify long-term trends and provide projections of anticipated future outcomes based on the patterns observed throughout the duration of the study.
The proposed timeline is:
Data Collection Analysis Report July 2026 December 2026 July 2028 December 2028 July 2030 December 2030 July 2032 December 2032 July 2034 December 2034
2. Remote Sensing Equipment Requirements
The equipment used for vehicle emissions sampling must be capable of measuring HC, CO, and NOx and, as applicable, other similar constituents of concern. All equipment must meet or exceed the specifications established by the Colorado COVERS program. Additionally, the equipment must include functionality to identify vehicles by capturing and recording vehicle license plate information for each sample collected.
3. Sample Collection and RSD Sampling Sites A minimum of four (4) weeks of sample collection is required during each sampling period within the designated locations identified below. The final number of Sampling Sites within each location shall be determined in consultation with the Contractor to ensure effective and representative data collection.
VIP anticipates identifying approximately ten (10) to twelve (12) sampling sites across the designated areas for each sampling period.
• Portland Metro Area: Two (2) to four (4) Sampling Site locations within the mandatory I/M testing boundary, and two (2) to four (4) Sampling Site locations within the counties immediately adjacent to the mandatory I/M testing boundary.
The city of Newberg, which lies partially within the Portland mandatory I/M testing boundary, is identified as a key area of interest. Emphasis shall be placed on conducting sampling is this area during each collection period. The selected sampling site within Newberg shall be strategically located to capture the highest possible number of vehicles that are registered outside of the mandatory I/M testing boundary but are commuting within it.
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• Medford Metro-Area: One (1) Sampling Site location within the mandatory I/M testing boundary and one (1) Sampling Site location within the counties immediately adjacent to the mandatory I/M testing boundary.
• Salem and Eugene Metropolitan Areas: A minimum of one (1) sample collection event will occur in each of the Salem and Eugene Metropolitan areas during every sampling period throughout the ten (10) year project. Both the City of Salem and City of Eugene are currently located outside the established mandatory I/M testing boundary.
• Additional Regional Sampling Locations: VIP and Contractor may identify additional regional sampling location(s) within the State that are expected to representative data from areas outside of the mandatory I/M testing boundary and contribute meaningfully to the objectives of the study. If such additional location(s) are determined to be beneficial, the Contract Statement of Work shall be amended accordingly to incorporate the approved changes.
• Sampling Site Selection and Data Collection Requirements: Potential Sampling Sites will be identified by Contractor with final selections subject to approval by VIP. Contractor shall obtain an appropriate and statistically significant number of vehicle exhaust emission samples, which shall include measurements of HC, CO, and NOx and, as applicable, other similar constituents of concern. Samples shall be collected from all vehicles powered by either gasoline or diesel fuel with a GVWR of 14,000 pounds or less.
Zero emission vehicles (ZEVs) shall also be identified and analyzed for their impact to the automotive fleet emissions.
Contractor shall be responsible to obtaining any permits required for the sampling activities, and all associated costs shall be the included in their proposal.
4. Design of Study
For each sampling period, the study – including sample collection, analysis, and reporting – shall include a comprehensive set of tables, figures, charts, graphs, and other visual aids designed to enhance clarity and support effective review. Contractor shall explicitly state whether VIP’s mandatory I/M program is determined to be effective or not, and provide a clear explanation supporting that determination. Criteria for this determination will include reductions in air pollutants emitted from regulated vehicles compared to non-regulated vehicles. Compliance and regulatory adherence will also be evaluated by analyzing the number of vehicles previously registered within Oregon testing boundaries that are currently expired, but captured via the study, as well as unplated vehicles captured via the study and their respective emission rates.
Contractor shall conduct an analysis of the data to evaluate the effectiveness of the current Portland metropolitan mandatory I/M testing boundary. Vehicle registration information obtained during the study shall be used to assess the influence of vehicles commuting into the mandatory I/M testing boundary. This analysis shall include identification of commuting patterns and respective emissions rates based on distance from the Portland I/M boundary, utilizing delineated zones staggered at intervals of approximately 1, 2, 4, 6, and 10 miles from the nearest boundary point. Contractor shall be responsible for submitting their own public records requests to obtain vehicle registration information and analyzing data in order to accurately identify commuting patterns.
Vehicles identified as domiciled out of state shall be analyzed as a distinct category within the broader evaluation of all sampled vehicles. Due to the proximity of Washington State to the Portland mandatory
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I/M testing boundary – and the recent repeal of vehicle emissions testing regulations in Washington – vehicles registered in Washington shall be further analyzed as a specific subcomponent of the out-of-state vehicle category in the data analysis report.
The study shall also include an analysis of exempted ZEVs and diesel vehicles within the sampled fleet.
This analysis shall identify the registration location of each diesel and ZEV vehicle as either within or outside of the mandatory I/M testing boundary. Each report iteration shall document changes in the composition of the vehicle fleet, assess their impact on regional emissions, and evaluate the significance of these changes in relation to the implementation of ACC II regulations.
5. VIP Program Data Upon request, VIP may provide the Contractor with relevant VIP test data to support the evaluation of VIP’s effectiveness. The provision of such data shall be at the discretion of VIP and may be subject to data use agreements or confidentiality requirements, as applicable.
6. Period and Final Study Reports
• Executive Summary Each report shall include an Executive Summary that presents the overall conclusions of the data analysis, in layperson terms, minimizing technical details. The overall conclusion will also include trending analysis conclusions. This section is intended to provide an overview of the study’s core elements to guide executive-level discussion and inform decision-making.
• RSD Data Analysis This section of the report shall present a comprehensive analysis of the RSD data using a variety of analytical methods to generate meaningful insights. Any variables that impact emission readings should be explored, such as temperature, humidity, precipitation, engine load, speed, acceleration, vehicle specific power (VSP), and vehicle age. A key component of the analysis shall include a comparison of emission rates from vehicles registered both inside and outside of the mandatory I/M testing boundary.
In each report, the Contractor shall explicitly state whether VIP’s I/M testing program is determined to be effective and provide a clear rationale supporting that conclusion. The statistical reliability of the sample size shall be explained and prominently highlighted in each report to support the validity of the findings.
Additionally, the Contractor shall analyze the data to evaluate the appropriateness of the current Portland mandatory (I/M) testing boundary. This evaluation shall include specific consideration of the Newberg area and its relationship to the existing boundary framework.
The RSD Data Analysis section shall also include:
a. A matching and comparison of RSD results with recent mandatory I/M testing results.
This comparison is intended to assess the impact and effectiveness of mandatory I/M testing.
b. A focus shall be placed on analyzing vehicles that have failed the mandatory I/M testing and their corresponding RSD emissions data, paying particular attention to if pre/post repair I/M or RSD data is available.
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c. A comparison with the EPA’s Motor Vehicle Emission Simulator (EPA MOVES) model for emission reduction credits with the observed RSD I/M emission reductions.
d. A focus on the emission impact of commuters using vehicle registration data as the basis for designation as a commuter.
e. A thorough comparison and correlation analysis between RSD data and mandatory I/M testing data.
f. A vehicle emission rate comparison grouped by:
• Fuel type
• Model years with significant emission control technology advancements such as pre/post OBD(1995 and older versus 1996 and newer)
• Other groupings, such as 1996 to 1998, 1999 to 2004, 2005 to 2008, 2009 and newer.
g. An analysis of unregulated diesel vehicles. The analysis shall quantify and illustrate the emissions impact of identified diesel vehicles with a GVWR between 8,501 pounds and 14,000 pounds that are not currently subject to mandatory I/M testing.
h. ZEVs will be identified and analyzed for their impact to the automotive fleet emissions.
i. Each report shall include an analysis of the data to determine the impact of exempted ZEVs within the sampled fleet. Identified ZEVs shall be categorized by registration location, indicating whether they are registered within or outside of a mandatory (I/M) testing boundary.
Each report iteration shall highlight changes in the ZEV fleet population, assess the corresponding impact on regional emissions, and evaluate the relevance of these changes in the context of ACC II rules implementation.
• RSD Data Post Collection
All data collected and analysis calculations shall be provided upon request to VIP in a format and manner acceptable to DEQ and Oregon Enterprise Information Services.
• Conclusions This section of the report shall be similar in structure to the Executive Summary but include additional technical details as appropriate. A list of tables, figures, charts, graphs, and any other illustrations should be included. The Conclusions section shall directly address each of the study elements outlined in Attachment A - Section 4 (Design of Study) and shall at a minimum include:
a. An analysis of all sample data, including data collected directly by Contractor and the OBD Test data provided by VIP, to determine overall fail rates based on VIP’s current basic emission testing standards. This analysis shall include:
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• The study areas with a focus on the sampling areas discussed above.
• An assessment of emission constituent levels categorized by vehicle make, model, fuel type, and age.
b. An assessment of the average time between maintenance activities in each study area, supplemented with data from an OBD assessment that VIP will be conducting congruently.
c. A comparison of findings to VIP’s current four (4) year new vehicle emission testing exemption, with an assessment of whether the exemption remains appropriate.
d. An assessment of the impacts of vehicles registered in the State of Washington.
e. An assessment of the impacts of vehicles registered within Clark County in the State of
Washington.
f. An assessment of the percentage of gross-polluting vehicles, by area, as defined by Oregon’s gross emissions standards. VIP will provide emissions program data to contractor to support this assessment. Contractor shall categorize the data by vehicle model year to serve as a surrogate for normalization when comparing different areas of the study.
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