Ronald Mittelstaedt2:18
Okay. Thank you, Maryanne. We are extremely pleased by the strength of our first half performance, which positioned us for an increase to our full year 2026 outlook with momentum for upside from improving trends in commodities and ongoing acquisition activity. Q2 growth of over 6% in both revenue and EBITDA exceeded our expectations in spite of the macroeconomic effects related to ongoing uncertainty in the geopolitical environment. Our results reflect continued benefits from both multi-year improvements in employee retention and record safety performance and more recent investments in AI technology all underpinned by disciplined operational execution. Most notably, adjusted EBITDA margin expanded to 32.8% on 70 basis points of underlying margin expansion, overcoming cost pressures primarily from rapidly spiking fuel and related costs in addition to ongoing drags from lower commodity values compared to last year's Q2.
Solid waste organic growth from total price of 6.7% in Q2 included core pricing of 5.6%, plus fuel and material surcharge charges of 1.1% which outpaced our expectations. On average yield of 4.6%, volumes were down 1.9% reflecting the ongoing macroeconomic uncertainty which has limited growth in the solid waste activity. Further, recent elevated fuel costs have impacted the pace and magnitude of construction related activity, some of which was paused during Q2. In addition, customer sensitivity to higher overall pricing resulting from fuel related surcharge charges likely exacerbated churn in certain markets. Acknowledging these dynamics, while special waste tons were down year-over-year in Q2, we have been impressed by activity in July, which may be an indication that the slowdown was temporary. Additionally, we were encouraged to see C&D tons up year-over-year in Q2 for the first time in 10 quarters with some projects continuing thus far in Q3.
Looking at other lines of business, we saw a slightly elevated seasonal ramp in E&P waste revenue in Q2, up 12% from Q1, and up 18% year-over-year. Organic E&P waste growth was led by the US, up 7% following a nominal pickup in rig count. Activity in Canada, while more production oriented and therefore considered less sensitive to crude values, was down nominally but about flat year-over-year when normalized for an outsized remediation project in the prior year. Looking next at trends for other commodities in Q2. Recycle commodity revenues stepped up sequentially for the second consecutive quarter with the overall basket up 10 to 15% from year end. Landfill gas sales have also improved, stepping up sequentially by 15% from Q1 as a result of both higher gas generation and higher values for renewable energy credits or RECs.
Looking at our renewable natural gas projects, we're pleased to report progress ahead of our expectations on the remaining development projects in 2026. Coming into the year with about a third of our RNG portfolio already operational, we have come through startup and ramp production at several other projects, including one owned facility brought online in July. RNG capital outlays are on track to be essentially complete by year end, and we expect that all plants will be operational by early next year. We're also tracking in line with our expectations with respect to the impacts for managing the elevated temperature landfill or ETLF event at Chiquita Canyon Landfill. As we described last quarter, we continue to make progress mitigating the reaction which is stable, controlled, and decelerating. There's no change to our projections regarding related free cash flow impacts to 2026 or our expectations for sequential decline in impacts in 2027.
Moving next to M&A, as expected year-to-date, we have completed acquisitions totaling approximately 100 million in annualized revenue, and we have another 30 million of exclusive model franchise transactions anticipated to close very soon during Q3. With almost half the year still ahead of us and dialogue ongoing, we remain on pace for what we would call another above average M&A year. We've also remained active buying back our own shares in what we consider an opportunistic environment. In our busiest year ever, we've deployed approximately 692 million year to date and bought back over 1.5% of shares outstanding pursuant to our normal course issuer bid which authorizes the repurchase of up to 5% of shares annually and which will be renewed in August. Following an active first half of the year, our leverage remains virtually unchanged at 2.76 times debt to EBITDA. As such, we retain flexibility for acquisitions and returning capital to shareholders through additional repurchases as well as another increase to our dividend, which we will consider when we undertake our annual review in October. And now we'd like to pass the call to Maryanne to review more in depth the financial highlights of the second quarter and to review the elements of our increased full year 2026 outlook and what that implies for the back half of the year. I will then wrap up before heading into Q&A.