additionally , we are obligated to repurchase from j. aron certain products located at our j. aron storage tanks upon termination of these agreements ; restrictive covenants in our indebtedness that may adversely affect our operational flexibility or ability to make distributions ; our assumptions regarding payments arising under pbf energy 's tax receivable agreement and other arrangements relating to pbf energy ; our expectations and timing with respect to our acquisition activity ; the impact of disruptions to crude or feedstock supply to any of our refineries , including disruptions due to problems at pbfx or with third-party logistics infrastructure or operations , including pipeline , marine and rail transportation ; the impact of current and future laws , rulings and governmental regulations , including the implementation of rules and regulations regarding transportation of crude oil by rail ; 48 the impact of the recently enacted federal income tax legislation on our business ; the threat of cyber-attacks ; the effectiveness of our crude oil sourcing strategies , including our crude by rail strategy and related commitments ; adverse impacts related to legislation by the federal government lifting the restrictions on exporting u.s. crude oil ; adverse impacts from changes in our regulatory environment , such as the effects of compliance with ab32 , or from actions taken by environmental interest groups ; market risks related to the volatility in the price of rins required to comply with the renewable fuel standards and ghg emission credits required to comply with various ghg emission programs , such as ab32 ; our ability to complete the successful integration of the martinez refinery and any other acquisitions into our business and to realize the benefits from such acquisitions ; unforeseen liabilities associated with the martinez acquisition and any other acquisitions ; and any decisions we continue to make with respect to our energy-related logistics assets that may be transferred to pbfx . we caution you that the foregoing list of important factors may not contain all of the material factors that are important to you . in addition , in light of these risks and uncertainties , the matters referred to in the forward-looking statements contained in this annual report on form 10-k may not in fact occur . accordingly , investors should not place undue reliance on those statements . our forward-looking statements speak only as of the date of this annual report on form 10-k. except as required by applicable law , including the securities laws of the united states , we do not intend to update or revise any forward-looking statements . all subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the foregoing . executive summary we were formed in march 2008 to pursue the acquisitions of crude oil refineries and downstream assets in north america . as of december 31 , 2019 , we owned and operated five domestic oil refineries and related assets located in delaware city , delaware , paulsboro , new jersey , toledo , ohio , chalmette , louisiana and torrance , california . our refineries have a combined processing capacity , known as throughput , of approximately 900,000 bpd , and a weighted average nelson complexity index of 12.2. our five oil refineries are all engaged in the refining of crude oil and other feedstocks into petroleum products , and are aggregated into one reportable segment . following the completion of the martinez acquisition , we increased our total throughput capacity to over 1,000,000 bpd and became the most complex independent refiner with a consolidated nelson complexity of 12.8. factors affecting comparability our results over the past three years have been affected by the following events , the understanding of which will aid in assessing the comparability of our period to period financial performance and financial condition . torrance land sale on august 1 , 2019 and august 7 , 2018 , we closed on third-party sales of parcels of real property acquired as part of the torrance refinery , but not part of the refinery itself . the sales resulted in gains of approximately $ 33.1 million and $ 43.8 million in the third quarter of 2019 and 2018 , respectively , included within gain on sale of assets in the consolidated statements of operations . 49 inventory intermediation agreements the inventory intermediation agreements with j. aron were amended in the first quarter of 2019 and amended and restated in the third quarter of 2019 , pursuant to which certain terms of the inventory intermediation agreements were amended , including , among other things , the maturity date . on march 29 , 2019 , the inventory intermediation agreement by and among j. aron , us and dcr was amended to add the pbfx east coast storage assets as a location and crude oil as a new product type to be included in the products sold to j. aron by dcr . on august 29 , 2019 , the inventory intermediation agreement by and among j. aron , us and prc was extended to december 31 , 2021 , which term may be further extended by mutual consent of the parties to december 31 , 2022 , and the inventory intermediation agreement by and among j. aron , us and dcr was extended to june 30 , 2021 , which term may be further extended by mutual consent of the parties to june 30 , 2022. pursuant to each inventory intermediation agreement , j. aron continues to purchase and hold title to the j. aron products produced by the east coast refineries , and delivered into our j. aron storage tanks . furthermore , j. aron agrees to sell the j. aron products back to the east coast refineries as they are discharged out of our j. aron storage tanks . story_separator_special_tag the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks . in addition , we have the capability to process a significant volume of light , sweet crude oil depending on market conditions . our total throughput costs have historically priced at a discount to dated brent ; and as a result of the heavy , sour crude slate processed at delaware city , we produce lower value products including sulfur , carbon dioxide and petroleum coke . these products are priced at a significant discount to rbob and ulsd . 53 paulsboro refinery . the benchmark refining margin for the paulsboro refinery is calculated by assuming that two barrels of dated brent crude oil are converted into one barrel of gasoline and one barrel of diesel . we calculate this benchmark using the nyh market value of rbob and ulsd against the market value of dated brent and refer to the benchmark as the dated brent ( nyh ) 2-1-1 benchmark refining margin . our paulsboro refinery has a product slate of approximately 44 % gasoline , 34 % distillate and 3 % high-value group i lubricants , with the remaining portion of the product slate comprised of lower-value products ( 13 % black oil , 2 % petroleum coke , and 4 % lpgs ) . for this reason , we believe the dated brent ( nyh ) 2-1-1 is an appropriate benchmark industry refining margin . the majority of paulsboro revenues are generated off nyh-based market prices . the paulsboro refinery 's realized gross margin on a per barrel basis has historically differed from the dated brent ( nyh ) 2-1-1 benchmark refining margin due to the following factors : the paulsboro refinery processes a slate of primarily medium and heavy sour crude oils , which has historically constituted approximately 75 % to 85 % of total throughput . the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks ; as a result of the heavy , sour crude slate processed at paulsboro , we produce lower value products including sulfur and petroleum coke . these products are priced at a significant discount to rbob and ulsd ; and the paulsboro refinery produces group i lubricants which carry a premium sales price to rbob and ulsd . toledo refinery . the benchmark refining margin for the toledo refinery is calculated by assuming that four barrels of wti crude oil are converted into three barrels of gasoline , one-half barrel of ulsd and one-half barrel of jet fuel . we calculate this refining margin using the chicago market values of conventional blendstock for oxygenate blending and ulsd and the united states gulf coast value of jet fuel against the market value of wti and refer to this benchmark as the wti ( chicago ) 4-3-1 benchmark refining margin . our toledo refinery has a product slate of approximately 55 % gasoline , 34 % distillate , 5 % high-value petrochemicals ( including nonene , tetramer , benzene , xylene and toluene ) with the remaining portion of the product slate comprised of lower-value products ( 4 % lpgs and 2 % other ) . for this reason , we believe the wti ( chicago ) 4-3-1 is an appropriate benchmark industry refining margin . the majority of toledo revenues are generated off chicago-based market prices . the toledo refinery 's realized gross margin on a per barrel basis has historically differed from the wti ( chicago ) 4-3-1 benchmark refining margin due to the following factors : the toledo refinery processes a slate of domestic sweet and canadian synthetic crude oil . historically , toledo 's blended average crude costs have differed from the market value of wti crude oil ; the toledo refinery configuration enables it to produce more barrels of product than throughput which generates a pricing benefit ; and the toledo refinery generates a pricing benefit on some of its refined products , primarily its petrochemicals . chalmette refinery . the benchmark refining margin for the chalmette refinery is calculated by assuming two barrels of lls crude oil are converted into one barrel of gasoline and one barrel of diesel . we calculate this benchmark using the us gulf coast market value of 87 conventional gasoline and ulsd against the market value of lls and refer to this benchmark as the lls ( gulf coast ) 2-1-1 benchmark refining margin . our chalmette refinery has a product slate of approximately 50 % gasoline and 33 % distillate , with the remaining portion of the product slate comprised of lower-value products ( 8 % black oil , 4 % petroleum coke , 3 % lpgs , and 2 % petrochemical feedstocks ) . for this reason , we believe the lls ( gulf coast ) 2-1-1 is an appropriate benchmark industry refining margin . the majority of chalmette revenues are generated off gulf coast-based market prices . the chalmette refinery 's realized gross margin on a per barrel basis has historically differed from the lls ( gulf coast ) 2-1-1 benchmark refining margin due to the following factors : the chalmette refinery has generally processed a slate of primarily medium and heavy sour crude oils , which has historically constituted approximately 55 % to 65 % of total throughput . the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks ; and as a result of the heavy , sour crude slate processed at chalmette , we produce lower-value products including sulfur and petroleum coke . these products are priced at a significant discount to 87 conventional gasoline and ulsd . 54 the prl ( pre-treater , reformer , light ends ) project was completed in 2017 which has increased high-octane , ultra-low sulfur reformate and chemicals production . the new crude oil tank was also commissioned in 2017 and is allowing additional gasoline and diesel exports , reduced rins compliance costs and lower crude ship demurrage

compared to net cash provided by operating activities of $ 471.1 million for the year ended december 31 , 2017 . our operating cash flows for the year ended december 31 , 2017 included our net income of $ 457.2 million , depreciation and amortization of $ 274.7 million , pension and other post-retirement benefits costs of $ 42.2 million , debt extinguishment costs of $ 25.5 million , stock-based compensation of $ 21.5 million , change in the fair value of our inventory repurchase obligations of $ 13.8 million , distributions from our equity method investment in tvpc of $ 20.2 million , changes in the fair value of our catalyst obligations of $ 2.2 million and loss on sale of assets of $ 1.5 million , partially offset by a non-cash benefit of $ 295.5 million relating to an lcm inventory adjustment , income from our equity method investment in tvpc of $ 14.6 million and deferred income taxes of $ 12.5 million . in addition , net changes in operating assets and liabilities reflected uses of cash of $ 65.1 million driven by the timing of inventory purchases , payments for accrued expenses and accounts payable and collections of accounts receivables . cash flows from investing activities net cash used in investing activities was $ 680.2 million for the year ended december 31 , 2019 compared to net cash used in investing activities of $ 509.6 million for the year ended december 31 , 2018 . the net cash flows used in investing activities for the year ended december 31 , 2019 was comprised of capital expenditures totaling $ 373.1 million , expenditures for refinery turnarounds of $ 299.3 million , and expenditures for other assets of $ 44.7 million , partially offset by proceeds of $ 36.3 million related to the sale of land at our torrance refinery and a $ 0.6 million return of capital from our equity method investment in tvpc .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```compared to net cash provided by operating activities of $ 471.1 million for the year ended december 31 , 2017 . our operating cash flows for the year ended december 31 , 2017 included our net income of $ 457.2 million , depreciation and amortization of $ 274.7 million , pension and other post-retirement benefits costs of $ 42.2 million , debt extinguishment costs of $ 25.5 million , stock-based compensation of $ 21.5 million , change in the fair value of our inventory repurchase obligations of $ 13.8 million , distributions from our equity method investment in tvpc of $ 20.2 million , changes in the fair value of our catalyst obligations of $ 2.2 million and loss on sale of assets of $ 1.5 million , partially offset by a non-cash benefit of $ 295.5 million relating to an lcm inventory adjustment , income from our equity method investment in tvpc of $ 14.6 million and deferred income taxes of $ 12.5 million . in addition , net changes in operating assets and liabilities reflected uses of cash of $ 65.1 million driven by the timing of inventory purchases , payments for accrued expenses and accounts payable and collections of accounts receivables . cash flows from investing activities net cash used in investing activities was $ 680.2 million for the year ended december 31 , 2019 compared to net cash used in investing activities of $ 509.6 million for the year ended december 31 , 2018 . the net cash flows used in investing activities for the year ended december 31 , 2019 was comprised of capital expenditures totaling $ 373.1 million , expenditures for refinery turnarounds of $ 299.3 million , and expenditures for other assets of $ 44.7 million , partially offset by proceeds of $ 36.3 million related to the sale of land at our torrance refinery and a $ 0.6 million return of capital from our equity method investment in tvpc .
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 Suspicious Activity Report : additionally , we are obligated to repurchase from j. aron certain products located at our j. aron storage tanks upon termination of these agreements ; restrictive covenants in our indebtedness that may adversely affect our operational flexibility or ability to make distributions ; our assumptions regarding payments arising under pbf energy 's tax receivable agreement and other arrangements relating to pbf energy ; our expectations and timing with respect to our acquisition activity ; the impact of disruptions to crude or feedstock supply to any of our refineries , including disruptions due to problems at pbfx or with third-party logistics infrastructure or operations , including pipeline , marine and rail transportation ; the impact of current and future laws , rulings and governmental regulations , including the implementation of rules and regulations regarding transportation of crude oil by rail ; 48 the impact of the recently enacted federal income tax legislation on our business ; the threat of cyber-attacks ; the effectiveness of our crude oil sourcing strategies , including our crude by rail strategy and related commitments ; adverse impacts related to legislation by the federal government lifting the restrictions on exporting u.s. crude oil ; adverse impacts from changes in our regulatory environment , such as the effects of compliance with ab32 , or from actions taken by environmental interest groups ; market risks related to the volatility in the price of rins required to comply with the renewable fuel standards and ghg emission credits required to comply with various ghg emission programs , such as ab32 ; our ability to complete the successful integration of the martinez refinery and any other acquisitions into our business and to realize the benefits from such acquisitions ; unforeseen liabilities associated with the martinez acquisition and any other acquisitions ; and any decisions we continue to make with respect to our energy-related logistics assets that may be transferred to pbfx . we caution you that the foregoing list of important factors may not contain all of the material factors that are important to you . in addition , in light of these risks and uncertainties , the matters referred to in the forward-looking statements contained in this annual report on form 10-k may not in fact occur . accordingly , investors should not place undue reliance on those statements . our forward-looking statements speak only as of the date of this annual report on form 10-k. except as required by applicable law , including the securities laws of the united states , we do not intend to update or revise any forward-looking statements . all subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the foregoing . executive summary we were formed in march 2008 to pursue the acquisitions of crude oil refineries and downstream assets in north america . as of december 31 , 2019 , we owned and operated five domestic oil refineries and related assets located in delaware city , delaware , paulsboro , new jersey , toledo , ohio , chalmette , louisiana and torrance , california . our refineries have a combined processing capacity , known as throughput , of approximately 900,000 bpd , and a weighted average nelson complexity index of 12.2. our five oil refineries are all engaged in the refining of crude oil and other feedstocks into petroleum products , and are aggregated into one reportable segment . following the completion of the martinez acquisition , we increased our total throughput capacity to over 1,000,000 bpd and became the most complex independent refiner with a consolidated nelson complexity of 12.8. factors affecting comparability our results over the past three years have been affected by the following events , the understanding of which will aid in assessing the comparability of our period to period financial performance and financial condition . torrance land sale on august 1 , 2019 and august 7 , 2018 , we closed on third-party sales of parcels of real property acquired as part of the torrance refinery , but not part of the refinery itself . the sales resulted in gains of approximately $ 33.1 million and $ 43.8 million in the third quarter of 2019 and 2018 , respectively , included within gain on sale of assets in the consolidated statements of operations . 49 inventory intermediation agreements the inventory intermediation agreements with j. aron were amended in the first quarter of 2019 and amended and restated in the third quarter of 2019 , pursuant to which certain terms of the inventory intermediation agreements were amended , including , among other things , the maturity date . on march 29 , 2019 , the inventory intermediation agreement by and among j. aron , us and dcr was amended to add the pbfx east coast storage assets as a location and crude oil as a new product type to be included in the products sold to j. aron by dcr . on august 29 , 2019 , the inventory intermediation agreement by and among j. aron , us and prc was extended to december 31 , 2021 , which term may be further extended by mutual consent of the parties to december 31 , 2022 , and the inventory intermediation agreement by and among j. aron , us and dcr was extended to june 30 , 2021 , which term may be further extended by mutual consent of the parties to june 30 , 2022. pursuant to each inventory intermediation agreement , j. aron continues to purchase and hold title to the j. aron products produced by the east coast refineries , and delivered into our j. aron storage tanks . furthermore , j. aron agrees to sell the j. aron products back to the east coast refineries as they are discharged out of our j. aron storage tanks . story_separator_special_tag the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks . in addition , we have the capability to process a significant volume of light , sweet crude oil depending on market conditions . our total throughput costs have historically priced at a discount to dated brent ; and as a result of the heavy , sour crude slate processed at delaware city , we produce lower value products including sulfur , carbon dioxide and petroleum coke . these products are priced at a significant discount to rbob and ulsd . 53 paulsboro refinery . the benchmark refining margin for the paulsboro refinery is calculated by assuming that two barrels of dated brent crude oil are converted into one barrel of gasoline and one barrel of diesel . we calculate this benchmark using the nyh market value of rbob and ulsd against the market value of dated brent and refer to the benchmark as the dated brent ( nyh ) 2-1-1 benchmark refining margin . our paulsboro refinery has a product slate of approximately 44 % gasoline , 34 % distillate and 3 % high-value group i lubricants , with the remaining portion of the product slate comprised of lower-value products ( 13 % black oil , 2 % petroleum coke , and 4 % lpgs ) . for this reason , we believe the dated brent ( nyh ) 2-1-1 is an appropriate benchmark industry refining margin . the majority of paulsboro revenues are generated off nyh-based market prices . the paulsboro refinery 's realized gross margin on a per barrel basis has historically differed from the dated brent ( nyh ) 2-1-1 benchmark refining margin due to the following factors : the paulsboro refinery processes a slate of primarily medium and heavy sour crude oils , which has historically constituted approximately 75 % to 85 % of total throughput . the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks ; as a result of the heavy , sour crude slate processed at paulsboro , we produce lower value products including sulfur and petroleum coke . these products are priced at a significant discount to rbob and ulsd ; and the paulsboro refinery produces group i lubricants which carry a premium sales price to rbob and ulsd . toledo refinery . the benchmark refining margin for the toledo refinery is calculated by assuming that four barrels of wti crude oil are converted into three barrels of gasoline , one-half barrel of ulsd and one-half barrel of jet fuel . we calculate this refining margin using the chicago market values of conventional blendstock for oxygenate blending and ulsd and the united states gulf coast value of jet fuel against the market value of wti and refer to this benchmark as the wti ( chicago ) 4-3-1 benchmark refining margin . our toledo refinery has a product slate of approximately 55 % gasoline , 34 % distillate , 5 % high-value petrochemicals ( including nonene , tetramer , benzene , xylene and toluene ) with the remaining portion of the product slate comprised of lower-value products ( 4 % lpgs and 2 % other ) . for this reason , we believe the wti ( chicago ) 4-3-1 is an appropriate benchmark industry refining margin . the majority of toledo revenues are generated off chicago-based market prices . the toledo refinery 's realized gross margin on a per barrel basis has historically differed from the wti ( chicago ) 4-3-1 benchmark refining margin due to the following factors : the toledo refinery processes a slate of domestic sweet and canadian synthetic crude oil . historically , toledo 's blended average crude costs have differed from the market value of wti crude oil ; the toledo refinery configuration enables it to produce more barrels of product than throughput which generates a pricing benefit ; and the toledo refinery generates a pricing benefit on some of its refined products , primarily its petrochemicals . chalmette refinery . the benchmark refining margin for the chalmette refinery is calculated by assuming two barrels of lls crude oil are converted into one barrel of gasoline and one barrel of diesel . we calculate this benchmark using the us gulf coast market value of 87 conventional gasoline and ulsd against the market value of lls and refer to this benchmark as the lls ( gulf coast ) 2-1-1 benchmark refining margin . our chalmette refinery has a product slate of approximately 50 % gasoline and 33 % distillate , with the remaining portion of the product slate comprised of lower-value products ( 8 % black oil , 4 % petroleum coke , 3 % lpgs , and 2 % petrochemical feedstocks ) . for this reason , we believe the lls ( gulf coast ) 2-1-1 is an appropriate benchmark industry refining margin . the majority of chalmette revenues are generated off gulf coast-based market prices . the chalmette refinery 's realized gross margin on a per barrel basis has historically differed from the lls ( gulf coast ) 2-1-1 benchmark refining margin due to the following factors : the chalmette refinery has generally processed a slate of primarily medium and heavy sour crude oils , which has historically constituted approximately 55 % to 65 % of total throughput . the remaining throughput consists of sweet crude oil and other feedstocks and blendstocks ; and as a result of the heavy , sour crude slate processed at chalmette , we produce lower-value products including sulfur and petroleum coke . these products are priced at a significant discount to 87 conventional gasoline and ulsd . 54 the prl ( pre-treater , reformer , light ends ) project was completed in 2017 which has increased high-octane , ultra-low sulfur reformate and chemicals production . the new crude oil tank was also commissioned in 2017 and is allowing additional gasoline and diesel exports , reduced rins compliance costs and lower crude ship demurrage

