Thanks, Erin. I'm now on Slide 8 where we've highlighted our CapEx outlook. Following the 109 million of cash outflow from CapEx since 2018 we're expecting 2019 to be in the range of 140 to 150 million, followed by a reduction in 2020factory levels generally in line with what we saw in 2018. Now the increase in 2019 and subsequent decline in 2020, is a result of two factors. The first release to the previously announced 15 million of incremental CapEx associated with the relocation of our R&D facilities from its current location leased from Honeywell into our own Chesterfield, Virginia site. The second consideration relates to approximately $20 million in spend for plant turnarounds. Now this increase has been driven by the scope of the 2019 turnarounds, as well as the timing of the 2020 turnaround schedule for the spring referring CapEx spend in 2019, which I'll explain in a moment. Spend in 2018 and 2019 includes the two high return projects we've initiated focused on debottlenecking specific areas of our operations, optimizing quality and improving our mix and cost position overall that will drive future earnings and cash flow. As a reminder we'll begin to see the benefits from these projects in the back half of 2019, with the full-year benefits starting in 2020. We continue to prioritize organic investments and are executing against our multiyear $150 to $200 million, high return project pipeline, focus on growth and cost savings, asset flexibility and improving plant buffers among other benefits. We set a hurdle rate of approximately 20% in terms of an internal rate of return, and we have a healthy pipeline of investment opportunities. As we've discussed on our last earnings call the relocation of our R&D lab will enable an improved configuration of our labs to drive productivity, increase connectivity with our specialized resin manufacturing and more effective collaboration with customers. We're also continuing our base investments in safe and stable operations, as well as health, safety and environmental spend to reduce our risk profile, improve security and maintain regulatory compliance. From a maintenance CapEx perspective, we expect an additional 20 million of cash outflow in 2019 related to planned plant turnarounds. More specifically, this will manifest itself in a couple of areas. First, we typically open a turnaround activities between our sulfuric acid plant and our Kellogg ammonia plant each year. Both of those units are unit operations within Hopewell tend to be a bit more complex with largest scope plant turnarounds, and based on the equipment being replaced in our sulfuric acid plant in the fourth quarter of this year, we will see an increase in our capital spend. Now to be clear, there is no change to our expected turnaround expense impact of 35 to 40 million, which is what we've highlighted previously, but we will see a higher level of CapEx in 2019 related to repair and maintenance spend. The second driver of the year-over-year increase is based on the cash outflow in 2019 related to equipment purchased for spring 2025 plant turnaround. Based on the proximity of our turnaround schedule with activities in the first quarter of 2019, and then early in the second quarter of 2020, there will be a higher amount of cash outflow this year for equipment being commissioned in next year's turnaround. So based on the timing of the spend versus cash outflow we will see an outsized amount hit this year. Overall, we should see a majority of the 20 million replacement CapEx impact revert back in 2020. Turnarounds are critical to the success of our operations, our plant uptime in general, and are essential, given our low-cost position and ability to run our plants at disproportionately higher utilization rates. Now let's flip to Slide 9. Now, before turning to Q&A, we'd like to recap our outlook for 2019. As we've discussed, there are some puts and takes across the portfolio from a commercial perspective. In the nylon space, we would characterize the macro demand environment as more uncertainty near-term given recent trends in building construction, as well as auto. However we continue to expect solid capital lifetime in nylon plant utilization rates at both Hopewell and Chesterfield as we navigate through this environment and remain focused on value pricing, or a more differentiated products based on their performance characteristics and higher value applications. In ammonium sulfate, we expect fertilizer prices and mix to increase seasonally into the second quarter. Overall, we continue to expect an improved nitrogen fertilizer environment to the spring planting season. As for chemical intermediates the outlook their remains largely unchangedas we expect continued global acetone oversupply to pressure industry spreads. As Erin mentioned earlier, we are awaiting a preliminary investigation on antidumping duty petitions filed with the International and Trade Commission and US Department of Commerce. Operationally, and no change to our planned plant turnaround schedule for 2019, as I mentioned, but that remains in the $35 million to $40 million range from the pretax income impact, and it will be heavily weighted towards fourth quarter of this year. We expect continued strength in utilization rates in 2019 supported by our proactive maintenance and reliability programs. As we mentioned earlier from a CapEx Perspective, we're expecting a 140 million to 150 million for the full year, including the execution of high return growth and cost savings projects and an increase in maintenance spending due to the scope and timing of planned plant turnarounds as we discussed, and we continue to expect our effective tax rate to be approximately 25% in 2019 with our cash tax rate of roughly 15%, reflecting full expensing of CapEx from a tax perspective. And lastly, as we think about the quarterly linearity for our earnings throughout 2019, we do anticipate under as underlying results excluding the planned turnaround impacts to be stronger in the second half of the year compared to the first half. That includes initial benefits from a high return capital investments towards the back half of the year, and a continued improvements in underlying operational performance. Within the first half, we expect our ammonium sulfate results to be seasonally stronger in the second quarter compared to the first given the timing of domestic fertilizer application. So overall will continue to monitor developments in our markets, while driving strong operational performance and redeploying capital to create long-term shareholder value. Now, with that, Adam, let's move to Q&A.