To require the Administrator of the Environmental Protection Agency to waive Reid Vapor Pressure requirements with respect to calendar year 2026, and for other purposes.
Summary
HR 8519, introduced April 27, 2026, by Rep. Mast (R-FL), mandates an EPA waiver of summer Reid Vapor Pressure (RVP) limits on gasoline from May 1 to September 15, 2026. The bill is in early legislative stages (referred to House Energy and Commerce). If enacted, it would reduce refinery production costs for summer gasoline by allowing cheaper butane blending, benefiting independent refiners like Valero, Phillips 66, and Marathon Petroleum. No market data is available for price impact analysis.
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Key Takeaways
- 1.HR 8519 is an early-stage bill with low near-term passage probability — it was introduced after the waiver period already began on May 1, 2026.
- 2.If enacted, the bill provides a direct cost savings to US refiners of $0.02–$0.05/gal on summer gasoline production, with independent refiners ($VLO, $PSX, $MPC) as primary beneficiaries.
- 3.The bill authorizes zero federal spending — it is a regulatory exemption, not a funding mechanism.
Market Implications
The market impact of HR 8519 is currently negligible due to its early legislative stage and retroactive timing. Refiner margins are already being set based on current RVP requirements; any waiver would be a positive surprise but is unlikely to be priced in. If the bill gains committee traction (e.g., a markup scheduled), watch for 1–3% upside in independent refiner stocks ($VLO, $PSX, $MPC) relative to the S&P 500 Energy sector. The more likely path is that the EPA issues its own emergency waiver under existing authority (Clean Air Act Section 211(c)(4)(C)) if gasoline supply concerns arise, which would have the same market effect without legislation.
Full Analysis
Intelligence Surface
Cross-referenced against federal contracts, SEC insider filings & congressional trade disclosures
No confirming evidence found yet from contracts, insider trades, or congressional activity
What the bill does
Regulatory exemption — EPA must waive summer Reid Vapor Pressure (RVP) limits on gasoline from May 1 to September 15, 2026, allowing sale of higher-volatility gasoline that would otherwise be prohibited under Clean Air Act Section 211(h).
Who must act
Refiners and gasoline blenders subject to EPA RVP standards under 40 CFR 80.27(a)(2) — primarily those producing or importing conventional gasoline for summer sale.
What happens
Removes the requirement to produce lower-RVP (more expensive) summer-grade gasoline, reducing refinery operational complexity and allowing use of cheaper butane blending. This lowers per-gallon production cost by an estimated $0.02–$0.05 during the waiver period.
Stock impact
Valero ($VLO), as the largest independent US refiner by capacity (~3.1 million bpd), operates 13 refineries across the US. The waiver reduces its summer-grade gasoline production costs across its entire conventional gasoline output, improving refining margins on ~1.2 million bpd of gasoline production. Estimated margin benefit of $0.03/gal on ~90 days of production = ~$100M–$250M in incremental EBITDA, though partially offset by potential price competition.
What the bill does
Same regulatory exemption — EPA waiver of summer RVP limits for calendar year 2026.
Who must act
Phillips 66 refineries and blending operations subject to summer RVP standards.
What happens
Reduces need to produce or purchase lower-RVP blendstocks (alkylate, reformate) and allows increased butane blending, lowering per-gallon production cost by $0.02–$0.05 during the May–September window.
Stock impact
Phillips 66 ($PSX) operates 12 refineries in the US and Europe with ~2.2 million bpd capacity. Its US refineries (primarily in the Gulf Coast, Central Corridor, and West Coast) produce significant summer gasoline volumes. The waiver directly improves its refining margins on conventional gasoline, with estimated benefit of $80M–$200M in incremental EBITDA for the waiver period, depending on crude and RIN costs.
Market Impact Score
Connected Signals
Matched on shared policy language across AI analyses, with ticker & timing weight
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A concurrent resolution setting forth the congressional budget for the United States Government for fiscal year 2026 and setting forth the appropriate budgetary levels for fiscal years 2027 through 2035.
DPA Modernization Act of 2026
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