7/16/2026
1 RiversideCA.gov1
RiversideCA.gov
EMISSIONS TESTING AND ENVIRONMENTAL CONSULTING SERVICES AT RERC, SPRINGS, AND CLEARWATER POWER PLANTSCity CouncilJuly 28, 2026Riverside Public Utilities RiversideCA.gov2
BACKGROUND
Springs Power Plant (36MW) Clearwater Power Plant (28MW)Riverside Energy Resource Center (RERC) (196 MW)
1. Provide a combined total of 260 megawatts of electricity2. Availability is critical to ensuring RPU can meet minimum electricity demand and reliability needs 3. Must comply with operating permits and stringent federal, state, and local regulations1 2 7/16/2026
2 RiversideCA.gov3
1. Each facility operates under a separate SCAQMD air permit and must comply with numerous regulatory requirementsa. Continuous emissions monitoring b. Emissions testing (SCAQMD-certified company)c. More than 3,300 regulatory reports annually2. SCAQMD transitioning to new rules and regulationsa. Expected to impact permit language, monitoring, reporting, and recordkeeping3. Given the complexity of navigating regulations and high volume of reports additional technical expertise is criticalBACKGROUND RiversideCA.gov4
1. Onterris USA, Inc. (formerly know as Montrose Environmental Solutions, Inc.) has supported RPU facilities since commissioning 2. Both emissions testing and environmental consulting servicesa. Integrated solution – Only source b. Establishes a single point of accountabilityc. Higher level of confidence with regulatory compliance3. More than 20 years of direct experiencea. Original air permits and any modifications and rule changes up until this pointb. Historical knowledge of specific regulations for each power plantc. Timely resolution of complex regulatory mattersd. Critical for ongoing compliance DISCUSSION3 4 7/16/2026
3 RiversideCA.gov5
1. Five-Year Term for Emissions Testing and Environmental Consulting Servicesa. Negotiated favorable pricing b. Annual rate increase capped at 5%c. Current market costs for RATA approximately $15,000 per test Proposed 2027 rate of $8,658d. Minimum savings of $57,000 per year (9 tests) e. Additional cost savings from emissions testing optimization – perform other tests during the RATA - $52,000+DISCUSSIONAnnual SavingsApproximate Savings per TestApproximate Market Cost 2025Proposed Cost 2027Test$57,000$6,342$15,000$8,658RATA RiversideCA.gov6
1. Annual amount developed from the expected number of emissions tests to be conducted each year, plus 400 hours of as-needed consulting services2. Only charged for actual expendituresDISCUSSIONAnnualYear$311,967Year 1 FY 2027/28$327,565 Year 2FY 2028/29$343,944 Year 3FY 2029/30$361,141 Year 4FY 2030/31$379,198 Year 5FY 2031/32$1,723,815TOTAL5 6 7/16/2026
4 RiversideCA.gov7
That the Board of Public Utilities recommend that the City Council:1. Approve a Professional Consultant Services Agreement with Onterris USA, Inc. of North Little Rock, Arkansas to provide emissions testing and environmental consulting services at Riverside Energy Resource Center, Clearwater, and Springs Power Plants for a 5-year term commencing July 1, 2027, through June 30, 2032, for a total agreement amount of $1,723,815; and2. Authorize the City Manager, or designee, to execute the Professional Consultant Services Agreement with Onterris USA, Inc., including making minor and non-substantive changes, subject to the availability of budgeted funds.RECOMMENDATIONS7