Donald R. Sinclair
Analyst · JPMorgan
Good morning, everyone. Thank you for joining us today. Last night, we announced our second quarter results for 2016. Our quarter was highlighted by the return of Ramsey III to full service and the completion of Ramsey IV. Additionally, we successfully accessed the fixed income market to lock in a very attractive cost of debt capital through our issuance of $500 million of 4.65% senior notes.
As previously announced, we raised the WES quarterly distribution to $0.83 per unit, which is an 11% increase over the second quarter of last year. We also raised the WGP quarterly distribution to $0.43375 per unit, which is a 19% increase over the second quarter of last year.
Turning to our quarterly results. We reported adjusted EBITDA of $250.6 million and distributable cash flow of $199.3 million, demonstrating another quarter of excellent performance. We delivered a healthy coverage ratio of 1.22x, which includes a receipt of $2.6 million of business interruption proceeds in the second quarter. If we were able to include all the expected business interruption recoveries occurred over the second quarter, our coverage ratio would have been 1.29x. To date, we estimate our total business interruption loss to be $21 million to $30 million. In addition to the $2.6 million received in the second quarter, we've received $13.7 million in July, which will be included in our third quarter adjusted EBITDA.
The drivers behind WES' first quarter results were sequential natural gas throughput growth at the DJ, Delaware and Eagle Ford assets as well as our Granger straddle plant, partially offset by declines at Marcellus and Chipeta. Our growth in crude and natural gas liquid throughput was largely driven by additional volumes flowing through the Mont Belvieu fractionators.
Our gross margin per Mcf for natural gas assets of $0.84 was $0.04 higher than the first quarter, primarily driven by a significant sequential increase of our DBM complex as Ramsey came back online. Our gross margin per barrel for crude/NGL assets of $2.03 was $0.04 lower than the first quarter, driven by changes in our throughput mix.
I'm pleased to report that Ramsey V and the related facilities are both on schedule to be placed in service no later than the end of the third quarter. We continue to evaluate when we will start construction on Ramsey VI and now believe the earliest the plant will be online is in the first quarter of 2018.
Turning to our 2016 outlook. We're increasing our full year adjusted EBITDA expectation to $930 million to $970 million as a result of our strong year-to-date performance. While there is a possibility of yet another partial business interruption payment in 2016, our updated guidance assumes no additional insurance proceeds this year beyond what we received in July. We're also raising our total capital expenditures range to $490 million to $530 million as a result of increased capital requirements associated with incremental activity in the Delaware Basin.
The portfolio's excellent performance year-to-date has reduced WES' need for additional equity, and any future WES issuances in 2016 would, therefore, be strictly opportunistic. WGP's 2016 distribution growth rate will be 19% to 21%, depending on the size and timing of additional WES equity issuances, if any.
Finally, as is customary during our second quarter earnings call, we will reflect back on WES' growth and successful business model. Over the past 8 years, WES has, at times, experienced economic uncertainty, operational issues, incredibly rare weather events and multiple commodity price cycles, including the one we're in now. Yet through it all, we have been able to generate results our investors expected, and we're extremely proud of this accomplishment.
WES just delivered its 29th consecutive quarterly distribution increase, and our annual EBITDA has grown to almost $1 billion. This performance across multiple cycles demonstrates that WES has a unique combination of an outstanding sponsor, scale and a resilient portfolio of quality assets that continue to perform at a very high level. We truly appreciate our long-term investors' continued support.
With that, operator, I'd like to open up the line for questions.