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Operator
Welcome to the MPLX First Quarter 2021 Earnings Call. My name is Amber and I will be your operator for today's call. (Operator Instructions) Please note that this conference is being recorded. I will now turn the call over to Kristina Kazarian. Kristina, you may begin.
Kristina Anna Kazarian - VP of IR - MPLX GP LLC
Thanks so much. Good morning and welcome to the MPLX First Quarter 2021 Earnings Conference Call. The slides that accompany this call can be found on our website at mplx.com under the Investor tab. Joining me on the call today are Mike Hennigan, Chairman, President and CEO; Pam Beall, CFO and other members of the Executive Team.
We invite you to read the safe harbor statements and the non-GAAP disclaimer on Slide 2. It's a reminder that we will be making forward-looking statements during the call and during the question-and-answer session that follows. Actual results may differ materially from what is we expect today. Factors that could cause actual results to differ are included there as well as in our filings with the SEC.
With that, I'll turn the call over to Mike.
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Thanks, Kristina. Good morning and thank you for joining our call. Earlier today, we reported adjusted EBITDA for the first quarter of 2021 of $1.4 billion. Despite lingering challenges from the COVID-19 pandemic and headwinds in the business environment, we were able to grow earnings on a year-on-year basis.
As we mentioned last quarter, we expect an impact to our L&S business from the renewal of the marine contract and equipment rate adjustments. Additionally, our G&P results also reflects an impact from the severe winter weather, including higher energy costs and lower volumes. We continue to identify opportunities to structurally lower our costs and drive efficiencies in the business and our reported operating expenses for the quarter continue to trend down. We are also maintaining strict capital discipline to efficient execute our growth plans on a high return portfolio of investments.
Our focus on strict capital discipline combined with growing EBITDA has allowed the business to generate excess cash after self funding our distribution and capital program. We remain committed to prioritizing the return of capital with over $900 million returned to unitholders this quarter through distributions and unit purchases. Furthermore, we believe our earnings growth combined with the desire to whole debt flat will result in a reduction in leverage over time.
As we look ahead for 2021, we expect to generate excess cash after capital investments and distributions as we had planned to do. The availability of COVID-19 vaccines provides hope for the return of global transportation fuel demand and economic recovery. Even though many uncertainty still exist, the world's need for reliable, affordable and responsibly produced energy remains important.
We believe we can continue to meet this need through our strategy to allow us to successfully adapt to the evolving energy landscape, by shaping our asset portfolio to meet the challenges and opportunities created by the energy evolution. You look at Slide 4, I'd like to provide some comments on our commitment to ESG. Last quarter, we discussed the importance of setting objectives for the organization to drive continuous improvement on ESG. Our commitment to sustainability positions us to deliver strong results in this space, including lowering the carbon intensity of our operations and products, improving energy efficiency and conserving natural resources or using innovative technology to do it.
We've established a program to lower methane emissions at our natural gas gathering and processing business, includes a goal of reducing our methane emissions intensity to 50% below 2016 levels by the year 2025. Our broader vision of sustainability emphasizes delivering essential energy products and services to the world in-ways that create share value for all our stakeholders.
Now let me turn the call over to Pam to discuss our operational and financial results.
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Thanks, Mike. Slide 5 outlines the first quarter operational and financial highlights for our Logistics and Storage segment. Segment EBITDA increased $24 million year-over-year. Despite headwinds from a reduction in our marine transportation fees and lower throughput on some of our pipeline equity method investments, the team's focus on operating expense reductions and business efficiencies provided support for the segment.
Additionally, while terminal throughputs were lower compared with the first quarter 2020, pipeline volumes were in line with the same period last year. We continue to make good progress on our strategies to create an integrated crude oil and natural gas logistics system from the Permian to the Gulf Coast. The Wink to Webster crude oil pipeline in which MPLX has an equity interest continues to place segments in the service. And we expect this activity to continue throughout the remainder of the year. And segments are placed in service, we expect EBITDA contribution from this project to ramp up throughout 2022.
Consistent with our focus on projects with minimal return risk, the pipeline system has 100% of its contractable capacity committed with long-term minimum volume commitments. On the Whistler natural gas pipeline, commissioning activities on certain segments are underway in preparation for the project to start up in the third quarter of this year. Similar to the Wink to Webster project, Whistler is backed by long-term minimum volume commitments and we expect EBITDA contributions also ramp up through 2022. Finally, we continue to work towards an in-service date in the fourth quarter for the natural gas liquids takeaway solution, which provide long haul NGL service from the Permian to Sweeny, Texas. The project will have an initial capacity of 125,000 barrels per day with the potential to expand up to 350,000 barrels per day. Before we leave the discussions on our L&S segment, I would like to provide an update on certain contracts between MPC and MPLX.
MPLX continues to work alongside MPC as it progresses its portfolio of renewable projects, including potential opportunities to expand our logistics capability to deliver renewable diesel feedstocks. And to renewing the marine contract with MPC in January, we continue to receive questions around contracts for pipelines that were dropped into the partnership in 2012 and are coming up for renewal. As we continue to emphasize, many of the assets MPLX operates are fit for purpose for MPC's business and are integral to the MPC refining system.
Furthermore, we believe our crude and product pipeline contracts are at market rates. As in the past, we fully expect MPC to renew its contract with MPLX as they mature over time and for our revenue from these contracts to continue to reflect the strong integrated nature of the underlying business.
Now moving onto our Gathering and Processing business on Slide 6. We provide first quarter operational and financial highlights for this segment. For the first quarter of 2021, gathered volumes were lower than the same period last year across our footprint. Furthermore, processed volumes were down in all regions except the Marcellus. In the Marcellus, processed volumes increased 3% and fractionated volumes increased 7% relative to the first quarter of 2020.
The overall operating statistics include the impacts of severe weather during the quarter in the Southwest. We estimate an approximate $16 million impact to our business from the winter storms, with the majority of that impact reflected in our Gathering and Processing segment results. This impact included reduced volumes at some of our facilities as well as higher energy costs. Gathering and Processing segment EBITDA increased $34 million from the first quarter of 2020, which was supported by higher natural gas liquids prices and lower operating expenses, helping to offset the impact of lower volumes as well as the cost incurred due to the severe weather. In-line with previously announced efforts around portfolio optimizations, we did close on the sale of our Javelina plant in Corpus Christi, Texas in mid-February. In the Marcellus, we begun commissioning activities for our Smithburg 1 processing facility with a targeted in-service date in the third quarter.
Now, moving to our first quarter financial highlights on Slide 7. Total adjusted EBITDA was $1.4 billion and distributable cash flow was $1.1 billion. MPLX grew both EBITDA and distributable cash flow compared to the first quarter of 2020. Our distributable cash flow generation provided strong coverage of 1.5 times for the quarter and we paid $754 million in distribution.
Furthermore, MPLX continue to self-fund all capital investments and distributions to unitholders with $277 million of excess cash flow remaining after these activities for the quarter. In addition, we returned $155 million to unitholders through the repurchase of over $6 million publicly held common units under our unit repurchase program.
As of March 31st, total repurchases of $180 million have been made since the program inception was launched in the fourth quarter of 2020. Given continued uncertainty facing the economic recovery, we were extremely disciplined in our expense and capital spend for the first quarter.
This caution helped to drive a significant amount of excess free cash flow generated during the quarter. Looking forward, we've not changed our guidance on growth capital investment of $800 million for 2021. This implies a higher run-rate of capital spend for the remaining quarters.
As we increase our growth capital project related work, it tends to ramp up through summer months, we also expect to see a meaningful increase in the projects that are expensed. Subject to many factors that influenced timing of project and maintenance spend, this amount could be sequentially higher by as much of $75 million in the second quarter relative to the first quarter spend.
With our continued capital and expense discipline and growth in EBITDA, we expect to continue generating excess cash flow for 2021, providing financial flexibility to pursue value creating opportunities for our unitholders, including unit repurchases. We intend to remain flexible with our unit repurchase program and expect the pace of unit repurchases to be informed by market conditions, the business environment, the amount of excess cash generated in prior quarters among other factors.
On Slide 6, we provide a summary of key financial and balance sheet information. And I want to highlight that the inflection to generating excess cash and returning capital to unitholders has not compromised our focus on maintaining a strong balance sheet. We ended the quarter with a leverage ratio of 3.9 times. Approximately $2.7 billion available under our $3.5 billion bank revolving credit facility and $1.5 billion available on our intercompany facility with MPC. We intend to maintain our investment grade credit profile. And as Mike mentioned earlier called our debt flat. With strict capital discipline, growing EBITDA and stable debt, we believe leverage will decline over time. So now, let me turn the call back over to Kristina.
Kristina Anna Kazarian - VP of IR - MPLX GP LLC
Thanks, Pam. (Operator Instructions) With that, we will now open the call to questions. Operator?
Operator
(Operator Instructions) Our first question comes from Jeremy Tonet with JP Morgan.
James Kirby
It's James on for Jeremy. Just wanted to start on the buybacks. It seemed like the strong progress was made through the first quarter. I was just wondering, any color you can share on the cadence for the rest of the year or if there is any bogeys or factors you look at to allocate capital to buybacks going forward?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
This is Mike. On buybacks, the best guidance we can give you, tried to say this a couple of times is, it's going to be a dynamic process for us, not a program that we just set and walk away from. So we've tried to be transparent that we were driving to excess free cash flow. We achieved that, what we said back in the latter part of '20 and into '21. So the way we're going to look at it is each quarter as the market moves and we have more intelligence about the market, the unit price, the outlook et cetera, et cetera, we're going to look at what's the best way to deploy that excess cash. Buybacks is obviously something that we prioritized in the recent terms, especially since we're trading at the yields that we're trading at. But we have all the levers available to us. Buybacks, distributions, debt, capital all of those avenues are available to us. And as a management team, we're going to continue to talk about things through the quarter and continue to make what I call real time decisions or a dynamic process that's trying to be receptive to the market conditions at the time and trying to provide the best unitholder value. Hope that gives you a better feeling as to how we're thinking about the process.
James Kirby
Now, it does and I appreciate. I appreciate the color there. Then, just for my follow-up, shifting over to the renewable side. You mentioned the renewable diesel opportunity set in the prepared remarks. I was just wondering if you can elaborate on how far out on that, if there's any capital allocate that this year? And then, maybe just a second part of the question, looking at Carbon Capture, if you kind of foresee the 45q tax credits as being sufficient to incentivized capital allocation there?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
James, I'll now let Tim jump in with some more details. But I am just saying, in general, we're obviously aware of the energy evolution that's occurring. There's a lot of opportunities that people are exploring Tim and his team are looking at a lot of different things. So I'll let him give some color here.
Timothy T. Griffith - President of Speedway LLC
Jeremy, on the 45q credits, I guess, it kind of depends. In general, the 45q, it is the primary incentive for carbon capture and sequestration. And if you got the right environment, it may drive a competitive project. But if you look at most of those out there, it requires stacking of incentives and sometimes variable cost depending on the capture transportation and sequester cost come into play. So if you have projects with low capture cost, minimal transportation and some favorable geology, will then, then that might cover it. But other projects would require things like LCFS uplift for certain products in order to hurdle those higher costs. So again kind of depends. We do expect the government policies will further define the regulatory framework. And it's possible that there could be additional incentives that come down the pike.
Operator
Our next question comes from Aga Zmigrodzka with UBS.
Aga Zmigrodzka - Associate Director and Equity Research Associate, MLPs
So I'd like to follow up on that question renewable investments. Could you maybe provide more color on the scope and potential returns from the investments that you are looking at the renewable investments?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes. So we haven't gotten to a detailed point of disclosures on the things that we're looking at. I think the takeaway that you should think about is, there is a pretty nereid opportunity set in front of us now. Tim just mentioned carbon capture is one thing that we're looking at. Pam mentioned renewable diesels obviously being advanced by MPC lowering the carbon intensity of products is going to continue to be a theme that plays itself out there. So we haven't given any detailed disclosures other than to say that we're cognizant of the environment that we're in. I'd like to say people were talking a lot about hydrogen at one end of the spectrum. I think that's a little further out in time. But it is something that we're evaluating as we go forward. MPC is in the business of hydrogen. So that's something that we're very close to. At the same time, on the near end, as Pam mentioned, renewable diesel is on the front end. As Tim just mentioned, carbon and any types of activities around there are all front and center for us. However, we're going to make sure that when we advanced the ball on there that we could have a really strong return. So we are going to maintain capital discipline, not jump at something. It just appears to be good. We're going to make sure that at the end of the day, it gives us a good return and provides value to the unitholders.
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Aga, it's Pam. I just wanted to jump in and add to Mike's comments there. The other thing that that we should talk about is the fact that we're very bullish on the role that natural gas is going to play, even as we go through an energy transition. So we continue to look for opportunities to participate in the natural gas value chain, downstream of the operations that we have today. And Tim talked about some of our pipeline activities. And I don't know Tim, if you wanted to add anything on you're mentioned like the natural gas storage investment through our joint venture. So we're looking for those kind of opportunities as well, because we think that natural gas is going to be an important part of energy solution well into the future.
Aga Zmigrodzka - Associate Director and Equity Research Associate, MLPs
Thank you. And what has been the latest rig count drop your footprint in Northeast, the process volumes were down a little bit in 1Q versus 4Q. Do you expect a recovery for us in 2021?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
I'll let Greg take that one.
Gregory Scott Floerke - Executive VP & COO of MPLX GP LLC
It's Greg Floerke. With regard to the Northeast outlook, NGL prices and more currently gas prices are supportive of additional development in the Northeast. Rich gas drilling remains focused primarily in the Marcellus and more of the dry wing gas drilling in the Utica. We do see seasonal, depending on the season and particularly in the winter time and maintenance schedules, we do see fluctuation in volume quarter-over-quarter. But, in general, the Northeast is a key basin for us. And we think NGL prices and including the strip price in current inventory levels are supportive of potentially more rich gas drilling in the region.
Operator
Our next question comes from John Mackay with Goldman Sachs.
John Ross Mackay - Research Analyst
Just wanted to circle up on the buybacks. Understand its a variable number that will move around quarter-to-quarter depending on how much cash you have or left over. Just curious if have Javelina proceeds were kind of rolled into that number over if you see the 150-ish you did this quarter is being kind of a healthy number of the base business can generate?
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Yes, John, thanks, it's Pam. I'll take that question. So and we've talked about the fact we actually generate $277 million of excess cash after funding distributions on our capital program. That surplus cash did include proceeds from the Javelina sale. We did deploy a $155 million of that into unit repurchases. But we -- I also highlighted that the first quarter, we were extremely conservative on all forms of cash that we spent, just given some of the economic uncertainty as we moved through the beginning of 2021, not knowing how the pandemic would play out. So we do expect to see higher capital in subsequent quarters. And also some increase in expenses related to projects that we do that our expense. And as I've highlighted in some prior calls, some of our maintenance activities is all highlight API 653 tank work we expensed that work. Other companies capitalized it. So as we move through the year and maintain our assets, we'll have some increases in costs related to those activities. So didn't want people to get so focused on the high amount of excess cash that we generated during the first quarter.
John Ross Mackay - Research Analyst
And maybe the follow-up on that Pam. Just so that last comment you made, I guess, that's that's the $75 million of incremental cost you were referencing earlier and I guess it sounds like that's not part of necessarily the overall CapEx budget, is that how to think about it?
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Yes. That's correct, John. Those would be, that would show up in our operating expenses.
John Ross Mackay - Research Analyst
And maybe having to squeeze in one more. Look, Utica has been kind of a lot weaker than we've hoped for in the last couple of quarters. Just curious if you can guide us give us any more specific thoughts and what's going on with those assets, maybe if there's been a -- I don't know, any one-off that could return there? And then, any of your efforts on optimizing that footprint of that you've talked about a little bit in the last call?
Gregory Scott Floerke - Executive VP & COO of MPLX GP LLC
Yes, this is Greg. With regard to the Utica, as I mentioned, most of the focus there over the last few years has been in drilling the dry Utica areas. And we did see a quick ramp-up in that and we saw peak levels probably about a year ago. The rich Utica has been on a path, where new drilling and new wells have not been sufficient to offset the the normal decline of existing wells. So we're hopeful that the Utica that the current NGL prices will actually incent more drilling in the rich area of the Utica. But the larger impact that you've seen is where we see the largest swings is in the dry gas area, it's a largest volume. And if there is a timing issue on drilling, that shows up in a larger volume, a larger percentage way. We're still bullish on Utica dry gas drilling and hopeful that we'll see, continue to see good progress in terms of growth in the future there.
Operator
We'll now go to Spiro Dounis of Credit Suisse.
Spiro Michael Dounis - Director
Mike, last quarter, you framed '21 EBITDA with one of your banks in the river analogies. And I think you kind of put it in the range of $4.9 billion to $5.3 billion, just annualizing some relevant 2020 quarters. I know you don't give official guidance, but curious a few months in now, if you still feel like that's a relevant range? And if you're leaning kind of heavily in any direction there?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes, Spiro, it's Mike. So the main reason that we don't try to guide to that is we don't have control all the volumes that come out of the system in general. We make our best guess added. I think you're referencing last quarter Pam gave a little bit of the banks of the river and that is how we think about it. So we're obviously happy when we're seeing the market the same way that the upstream side of the business does. But our biggest challenge is we just don't control it. So I'll tell you, we keep a look at those things. We think about scenarios and then we step-back and we concentrate on the things that we do control. So we've had a lot of emphasis recently on cost reductions. And I think you're seeing that in our earnings year-on-year. At the same time, we're very cognizant of what are the scenarios that can play out for cash. And like a couple of the questions that we're asked earlier is, we're evaluating how the capital is going to play itself out through the year. As Pam said, we're still committed to that guidance. Tim and his team are evaluating whether there is economic support for us to enable some of the projects. At the same time, we're going to keep the discipline pretty high on that. If it stays high and we don't want to execute on those, we'll give that a little bit of time to percolate some more and then use the cash for the other levers that we have. So you're right in that. We think about scenarios and we think about what if everything goes our way. And then, we also think about what if things don't go our way. I mean, our goal Spiro is to try and be as transparent to the market as we can. We try and talk about not just the good things, but the risks that are out there. We've said, we have two risks that people are very aware of DAPL and what's going to play out in that regard. Again, we don't control it. But we try and scenario playing around it. The Tesoro High Plains Pipeline is another risk that we have out there that, again, we have our opinion of the way it's going to play itself out, but we don't control it. So that's kind of the process going back to the very first question of how do we think about this, this excess cash? I think we're in a good position. It's the place we wanted to be, where we have these choices and levers. And then, we try and take our best inputs as to all the information we have at the time. We see how the market plays itself out. Obviously, everybody is pretty excited about the rollout of vaccines and the impact that that's starting to have on the economy. And we are too, at the same time, we're still gasoline demand in the U.S. is still less than it was pre-pandemic, roughly 5% somewhere in that range. And then, it varies regionally. It's still lower in the West Coast, that was impacted more by the pandemic than say some of the other regions. So we're just like everybody have tempered optimism towards recovery. But at the same time, we just got to be careful about the data. We don't want to get in front of ourselves. And I think you hit it on the head. I've been trying to explain this concept of scenario planning and some probabilities. And then, we're just trying to make the best decision as we can on a real-time basis. So I hope that gives you a little more flavors to how we're thinking about it. We don't control that exact that upstream number. We watch it, we trend, we talk to our customers, et cetera, et cetera. And then, the reality just like everybody. Those companies are doing the best they can you on a quarter-to-quarter basis, just like we are. Does that help you at all?
Spiro Dounis
Second one, just on the noble scan. Sorry to keep it on this, but just curious how you're, I know it's early days, but curious how you're going to approach capital allocation I guess, and how are you thinking about the blueprint there? And I guess what I'm wondering is to the extent you've got competing conventional projects versus renewable projects and they more or less have the same return profile. Does tie go to the renewables, are you looking at those projects through a different risk lens and curious if this is an area where we could see you do more sort of JV opportunities with established players out there?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes, I think you hit it on the head, ties would go that way. We are conscious that over time renewables are going to be a bigger part of the energy landscape. So there is no doubt that we're conscious of that. The pace that that's going to occur and the economics behind how that occurs is still up in the air. Tim mentioned, one specific projects that people are spending a lot of time with, but there is many on the horizon right now. I would say that the list of things that we're looking at is pretty long. But they're ready to execute today, we're still evaluating some of these things. So I think you hit it on the head though. As far as where would we invest, we want to try and put our capital into an area that is going to grow over time. We do believe that the energy evolution will continue to occur over time. Some of the areas I think are a little bit ahead of its time as far as the rhetoric, some of the areas I think are very current. So all those types of things, the way you described it I think is exactly the way we think about it. And then, like I said, just like we were saying earlier is, even an individual project will start to talk about some scenarios around it. You hit a really important point as well. What are the risks around it and what's the term of it and how much support that we have for it and how many customers and what's the credit capabilities behind it? All those things come into play. So I'd like to think that our job is to have a very robust process and be very cognizant of capital that we could return to unitholders if we choose to deploy it in the capital spending that we got to feel really confident that it's going to deliver a lot of value. So that's why if anything, we're trying to leave you with, we've raised the bar on capital discipline. We're trying to be as cognizant as we can of the market as it evolves. And at the same time, we're in a nice position to have some levers to deploy cash in a lot of different ways.
Operator
Our next question comes from Michael Blum with Wells Fargo.
Michael Jacob Blum - MD and Senior Analyst
Maybe just to stay on this topic a little longer. So just to understand it a little better. So you've got your sort of big three midstream projects that you outlined. Beyond those, it sounds like there is not going to be a whole lot necessarily in terms of larger size projects on the midstream side. And then, on the renewable side, it's TBD, but it sounds like all else being equal. Those will take more time to develop and so therefore the CapEx should probably trend lower, at least in the near term looking at '22 and beyond. Just wondering if that's the right way to kind of think about it?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes, Michael. I'd say, you're in the right charge whether you turn out to be in the right deal or not, time will tell. I think we are describing it just very much the way you did. As there is a lot of projects that the team are looking at maybe more bold on, lower capital, higher return as opposed to like you said, the big bang that gets a lot of press. But we're very happy with the big projects that we've done. The team we have MDC protection behind the higher capital deployment ones and the NGL projects turned out to be a real good project for us. Tim and the team put together a nice lower capital solution for our customers, so that's worked out well. So yes, right now, we're looking at what's the best return projects, they may be smaller bits of capital. As Pam said, right at the moment, we're still feeling that that capital guidance that we've given is good. As we progress through the year, it looks like things are going to take a little longer than we will be a little bit under that and that's kind of what we said last quarter as well. So we're trying to give our best transparency. But I think you described it well. It's not that we're opposed to doing something of a larger nature. If it comes to fruition, we're not opposed to that, we're not opposed to looking at anything that creates a lot of value. But in the short-term, having capital discipline is a higher priority, lowering cost is a higher priority. Generating increases in the amount of earnings that we establish is kind of where we're putting a lot of our focus.
Michael Jacob Blum - MD and Senior Analyst
And then, I know that, another part of the plan has always been portfolio optimization, particularly on the G&P side of things. And I know that that market has been pretty slow in the last bit of time. I'm wondering if there's any change there that you're seeing?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
There hasn't been any change to date Michael. But as you can see gas prices are now close to $3 on the benchmark. So things are looking at, as Pam said it earlier, probably one of the biggest things that we debate it with the sell side and the buy side for a while is our natural gas business. Pam mentioned it earlier, we think natural gas will be an important part of this energy evolution over time. We've kind of defended our natural gas position when people have questioned a lot of why are we in this business? I think people are starting to see a little bit more of the stability that we've talked about and some of the resiliency in our cash flows. So I hope people are seeing a little bit of what we've been thinking for a while. And then, it's going to take a little bit of time. As mentioned earlier and Greg commented on it. Rigs are starting back a little bit more on the oil side now that we're at $60 oil. So you're seeing rig starts to come back in that area. Natural gas, we'll expect that to occur over time as well, albeit in a new dynamic, where producers are going to be a little bit more stringent about managing their cash flows. But I think in the long term, we still like the position we're in and we like the business that we have. We're hoping the market has seen the resiliency that we've kind of talked about. I haven't had as much of a chance to display. But the pandemic has given us that opportunity to show year-on-year earnings growth in '20 and we continue to show that. So hopefully that gives you a picture of what we're trying to do. In the meantime, I try to explain quarter-to-quarter. We continue to evaluate the market, evaluate the projects. I think you said it well. We don't have a major one that we're ready to announce at this point, but we're looking at everything. So we spend a lot of time looking at the portfolio. Right at the moment, there is nothing on the front burner, as far as the question of people have been asking us about divestments. So we don't have anything on the front burner. And the main reason I say that is we like our assets, they're generating free cash. I'm a big believer in our assets have to generate free cash. And the assets that we think are challenged. We'll put a little bit more attention there. But in the meantime while they generate free cash, they're contributing to the partnership. So I think that's a big key. We're not forced to do anything. I used the term, we're not giving any assets away. So if we got a value that we thought was appropriate to create value for the unitholders and we would execute on it, but we haven't seen that to date. We've been very open about. We've run a few processes. And at the end of the day, we have not seen things that that we think would be of value of us holding the assets ourselves. I hope that helps.
Operator
The last question comes from Keith Stanley with Wolfe Research.
Keith T. Stanley - Research Analyst
I just wanted to first clarify the operating cost commentary. Again so was it a $75 million increase quarter-over-quarter in Q2 and that's kind of a good run-rate from there or our costs just a little inflated in Q2? And then, relatedly you talking to release again to being committed to lowering the cost structure. You've already done a lot. Should we read that as there is a potential for another sort of meaningful round of cost reductions or is most of the low hanging fruit already done at this point?
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Yes, Keith, it's Pam. I'll take that. So just to clarify that $75 million increase, that was a sequential increase from first quarter to second and especially around some of the projects that we do that are expensed instead of capitalized. Now, we did make a meaningful reductions in the total costs, operating costs from 2019 to 2020 and those continue into 2021. In fact, we mentioned on one of our previous calls that some of our workforce reduction activities didn't take place until the fourth quarter. So we had talked about $200 million commitment that we knew we could deliver on $200 million of operating cost reductions. And then, we said the benefit of the lower workforce would be reflected in 2021. So we're definitely seeing some of that here in the first quarter and we'll see that throughout 2021. And as you look at 2021 compared to 2020, our operating expenses will be lower. It's just that sequentially, because we had generated so much cash in the first quarter and our spending was so low. In fact, I would see in our capital investment this low on a quarterly basis since 2014 before we acquired the natural gas business. So I just didn't want people to think that we're going to remain every quarter that low. So just trying to try a little more color there. I hope that's helpful Keith?
Keith T. Stanley - Research Analyst
It is. And the second part just on, if there is more to come that's meaningful on cost reductions, just given you guys have already done a lot on that front.
Pamela K. M. Beall - Executive VP, CFO & Director of MPLX GP LLC
Yes, I would just say on the margin, we're going to continue to focus on managing the business with as Mike likes to call it, it's our mantra, strict capital discipline and strict expense management.
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes, Keith, I'll just add a little bit to that. One of the things, your question is very similar to what we get. We have the sports analogy what inning in or what quarter of the football game, et cetera. I'd like to think about it is every, every game if I use the football analogy, every game that we approach we're going to ask ourselves is there areas that we can still challenge ourselves more in? But we're clearly, we played the first half if you want to use that term. And we're evaluating, is there other opportunities? As everybody knows, there is diminishing returns, ultimately there is only so much you can challenge yourself. But I'm hoping that we leave in the market with every game plan every time that we think about this we're going to be asking ourselves that question, because the market continues to evolve. And our cost structure is something that we should not put the playbook down on and say that's behind us now. It's something we're going to continue to watch, continue to challenge. I do give the team a lot of credit. When I asked everybody to look at this concept of changing the cost structure, I think the team has done a really nice job of looking at it. And there are some areas that we're still questioning and then be perfectly frank. Some areas you go and you think you can do x and it turned out to be y plus or minus. And then, the same thing in some other areas, you might do a little better than you originally thinking, you might do a little worse. The point being as you keep challenging, you keep looking at it, keep asking yourself the question if there's an opportunity there? I personally I am a cost hawk in a lot of ways. It's sexy to talk about revenues. But 1 and $1 of expense get the same dollar to the bottom line. So it's something that is top of mind for me all the time. So hopefully it will stay in focus for you guys to see how we progress on that.
Keith T. Stanley - Research Analyst
Second question, just you guys have talked and you always do about growing EBITDA in the business. And then, you also addressed just the 2012 pipeline assets and contracts pretty clearly. So when you look out over the next and I don't know call it 2-3 years. What are the main levers you think that grow EBITDA of the company? And are there any notable headwinds or things to be mindful of beyond the marine contract this year that could be headwinds over the next call it 2 to 3 years?
Michael J. Hennigan - Chairman of the Board, President & CEO of MPLX GP LLC
Yes, Keith. Like I said, one of the things that we hope the market likes about us as we try and be as transparent as we can especially on headwind. So the two that we said are very much out there that are material is the DAPL situation and the Tesoro High Plains Pipeline. Tesoro high plains, we thought was resolved. It's kind have gotten bounce back now again. So it's back out on the table. So those two issues are material in nature. So those are potential out there. Now, again, people asks us, what do we think is going to happen on? Again, we don't control that. We watch the court proceedings, etcetera just like you guys do. But those are out there. I think Pam was very transparent when we said the marine contract is going to be a significant change to us, roughly $100 million and I think we gave everybody advance notice on that. So we will continue to be transparent on contracts. I'd liking it to very much for the questions we used to get on the G&P business all the time, people are really worried about that. On the contract side, we don't have anything on the horizon that we need to make people aware of. In fact, if anything, we're trying to make the relationship between MPC and MPLX more of a win-win over time. And the way that we can integrate and try and drive value for both entities is really the main goal. So if we see something that we think is an issue that we need to make you aware of, then, we'll certainly disclose that. And like I said, Pam I think has done a nice job of that in the past and that will continue to be our mantra. So we don't want to surprise the market with anything how DAPL goes. I think everybody is watching to see how that plays itself out as an example. And if there is something else that we think is a headwind, we're certainly going to make you aware of it.
Kristina Anna Kazarian - VP of IR - MPLX GP LLC
So thank you everyone for joining us today and thank you for your interest in MPLX. Should you have additional questions or would like clarification on any of the topics discussed this morning, members of our team will be available to take your calls. Have a great day.
Operator
That concludes today's conference. Thank you for participating. You may now disconnect.