Luke Pelosi
Analyst · Jefferies
Thanks, Patrick. Our accompanying investor presentation provides supplemental analysis to summarize performance in the quarter and a consistent format to what we've previously provided.
Revenue for the quarter of $1.8 billion was 6.5% higher than the prior year, excluding the impact of the Solid Waste divestitures. Stronger-than-anticipated pricing and volume were the primary drivers of this result that was $25 million ahead of internal expectations. While the January cold weather in our southern markets negatively impacted volumes, the above-average temperatures later in the quarter in many of our northern U.S. and Canadian markets partially offset the January impacts.
As Patrick said, the strength of our first quarter pricing activities is highly encouraging for the achievement or exceedance of our pricing expectations for the year, with over 80% of our full year pricing impact already locked in based on the contracted nature of our business.
Page 3 shows the bridge for Solid Waste adjusted EBITDA margins compared to the first quarter of 2023. As anticipated, the change in commodity and fuel prices from the prior year served as a margin tailwind, whereas the net contribution of M&A and divestitures was a 20 basis point margin headwind versus the first quarter of 2023.
Underlying solid waste margins expanded by 100 basis points, 50 basis points better than planned, a result that would have been even greater without the weather-related impacts. The flow-through benefits of the outsized price cost spread or intentional volume shedding initiatives, RNG contribution and incremental operating leverage coming from improving employee turnover and asset utilization, are exceeding expectations and reinforce our optimism and our ability to exceed the industry-leading organic margin expansion we included in our base guide for this year.
Page 4 highlights the performance of our Environmental Services segment in the quarter. To contextualize this year's performance, it is important to recall the prior year comparable periods on unseasonably high level of activity resulting in 25% organic revenue growth in that quarter. We had called out this outsized performance in our Q1 2023 reporting.
Normalizing the prior period for this outperformance, we saw over 10% top line revenue growth in this segment. Unusually cold weather in the south in January as well as the imposition of earlier spring road weight restrictions because of warmer weather in our northern markets that are typically implemented in the second quarter, negatively impacted volumes.
The impacts on our southern markets alone impacted margins by over 100 basis points. The rollover impact of the fire we had at one of our facilities in late Q4 was a 20 basis point drag on ES margins. The timing of event-driven work and the sale of used motor oil also resulted in reduced revenue versus the prior year. The fact that we are exceeding our margin expectations in the face of these headwinds serves to highlight the quality of the underlying portfolio and our overall growth strategy for this segment.
Adjusted free cash flow for the quarter was $49 million, an increase of nearly $100 million over the prior year period and ahead of our internal expectations. The outperformance of adjusted EBITDA, a lower seasonal investment in working capital, and capital expenditures that were $25 million less than the plan, all contributed to the significant outperformance versus expectations.
We expect the working capital and CapEx variances to be timing differences and remain confident in our full year expectations for both of these line items. Page 5 summarizes reported net leverage, which was 4.3x on March 31, reflecting the impact of normal core seasonality and the change in FX rates from the start to the end of the quarter.
During the quarter, we received a credit rating upgrade from S&P and remain on positive credit watch from both the rating agencies, reflecting the material improvement in our credit quality and the expectation for further improvement in the near term. As we previously said, we anticipate material credit rating upgrades prior to the maturity of most of our existing debt, providing an opportunity for near-term lower borrowing costs and improved free cash flow conversion.
As Patrick said, we remain absolutely committed to our previously stated leverage targets. And with the strength of the first quarter performance, we are confident in our ability to achieve these targets exiting 2024 with net leverage between 3.65x and 3.85x.
In terms of guidance, with the strength of this year's start, we're feeling highly confident in our ability to exceed our previously communicated targets. As Patrick said, the strength of the first quarter's margin performance allows us the confidence to increase our adjusted EBITDA guidance to $2.23 billion. However, as Patrick noted and we've consistently said, there can often be timing shifts between the first and second quarters, so we will maintain our normal course practice of waiting until July before we formally update our full set of guidance for the year.
Specifically related to the second quarter, we note the following: Consolidated revenue is expected to be approximately $2.055 billion, Solid waste revenues are expected to be $1.56 billion to $1.57 billion, driven by pricing just over 6% and volume is anticipated to improve approximately 50 basis points sequentially from the first quarter or approximately negative 2.5%.
For Environmental Services, we expect to realize between $475 million and $500 million of revenue, representing another quarter of 10% growth over the prior year. The wider than typical revenue ranges within the segments are to account for the potential weather-driven pull forward of revenue into the first quarter from Q2.
In terms of margin, we expect consolidated adjusted EBITDA margins to accelerate over 300 basis points sequentially over the first quarter to just under 28.5% or nearly 70 basis points over Q2 2023. At the segment level, this assumes solid waste margins of 32% in the quarter to 32.5%. ES margins of almost flat with the prior year, around 29.6% and corporate margins of negative 3.2%.
The guide then contemplates further margin expansion in the third quarter before stepping down in the fourth quarter as per the typical cadence of the business. Putting that together, yields between $585 million and $590 million of adjusted EBITDA for the second quarter. Additionally, we expect $220 million to $230 million of net capital expenditures, $105 million of cash interest, and investment in working capital between $65 million and $75 million, and other operating items of approximately $25 million for Q2 adjusted free cash flow of approximately $160 million to $170 million.
In terms of net leverage, we expect a modest step up in Q2 as a result of seasonality and completed M&A and then to ratably step down in Q3 and Q4. Adjusted net income is expected to be approximately $100 million for the second quarter.
I will now pass the call back to Patrick, who will provide some closing comments before Q&A.