factors affecting oil prices include worldwide economic conditions ; geopolitical activities in various regions of the world ; worldwide supply and demand conditions ; weather conditions ; actions taken by the organization of petroleum exporting countries ; and the value of the u.s. dollar in international currency markets . commodity prices remain unpredictable and it is uncertain whether the increase in market prices experienced in recent months will be sustained . as a result , we can not accurately predict future commodity prices and , therefore , can not determine with any degree of certainty what effect increases or decreases in these prices will have on our capital expenditures , production volumes or revenues . in the event that oil , gas and ngls prices significantly decrease , such decreases could have a material adverse effect on our financial condition , the carrying value of our oil and natural gas properties , our proved reserves and our ability to finance operations , including the amount of the borrowing capacity under the alta mesa rbl . the following table sets forth the historical average new york mercantile exchange spot prices : replace_table_token_10_th going concern 39 our present level of indebtedness and the current commodity price environment present challenges to our ability to comply with the covenants in the agreements governing our indebtedness . as a result of the recent decrease in our forecasted production levels , increased operating costs , and pressures created by lower commodity prices , in the absence of one or more deleveraging transactions , we do not anticipate maintaining compliance with the consolidated total leverage ratio covenant in the alta mesa rbl as early as the measurement date of june 30 , 2019. our parent 's board of directors and its financial advisors are evaluating the available financial alternatives , including , without limitation , seeking amendments or waivers to the covenants or other provisions of our indebtedness , raising new capital from the private or public markets or taking other actions to address our capital structure . if we are unable to reach an agreement with our lenders or find acceptable alternative financing , it may lead to an event of default under the alta mesa rbl . if following an event of default , the alta mesa rbl lenders were to accelerate repayment , it may result in an event of default and an acceleration under the 2024 notes . we have concluded that these circumstances create substantial doubt regarding our ability to continue as a going concern . for a more detailed discussion , please read “ item 1a . risk factors . ” derivatives the objective of our hedging program is to produce , over time , relative revenue stability . however , in the short-term , both settlements and fair value changes in our derivatives can significantly impact our results of operations , and we expect these gains and losses to continue to reflect the impact of changes in oil and gas prices . our derivatives are reported at fair value and are sensitive to changes in the price of oil and gas . changes in derivatives are reported as gain ( loss ) on derivatives , which include both the unrealized increase and decrease in their fair value , as well as the effect of realized settlements during the period . for the successor period , we recognized a net loss on our derivatives of $ 10.2 million , which includes $ 39.0 million in cash settlements paid for derivatives . our alta mesa rbl generally has minimum and maximum hedging limits as further described elsewhere . impairments in late fourth quarter of 2018 , the combination of depressed prevailing oil and gas prices , changes to assumed spacing in conjunction with evolving views on the viability of multiple benches and reduced individual well expectations resulted in impairment charges of $ 2.0 billion to our proved and unproved oil and gas properties . individual well expectations were impacted by reductions in estimated reserve recovery of original oil and gas in place . at the time of the business combination , we believed that the stratigraphy underlying our acreage was conducive to development of three distinct benches within the broader mississippian section . proved reserve assumptions at the time of the business combination were based on initial wells drilled in the stack , stated expectations from other operators in the stack as well as analogous results from other resource plays . these proved reserve assumptions included spacing of four wells per section and probable and possible resource assumptions included an incremental three wells per section for a total of seven wells per section . an incremental five wells per section ( for a total of 12 wells per section ) were classified as contingent resources to which no value was assigned in the purchase price allocation for the business combination . we expected all proved and unproved wells to deliver similar results of approximately 250 mbbl of reserve recovery . our 2018 drilling program was executed under these assumptions and by early 2019 , we had 17 different sectional development patterns with six to ten wells per section and meaningful production results . the pattern wells generally produced as expected for the initial 60 days but began to fall below type curve after 90-120 days , which we believe was due to interference associated with the current spacing and benches . story_separator_special_tag if we have adequate liquidity to fund such operations , we expect to drill and bring online approximately 60 wells during 2019 while incurring approximately $ 140.0 million to $ 155.0 million of capital expenditures related to this development program . we also expect that an additional $ 18.0 million to $ 23.0 million could be incurred for non-operated projects , leasehold costs and capitalized workover activity . we do not expect our operating cash flow to provide sufficient proceeds to meet this level of expenditure and we would be required to utilize proceeds from borrowings under the alta mesa rbl , if capacity becomes available to us . during april 2019 , our borrowing base was reduced from $ 400.0 million to $ 370.0 million as part of the semi-annual redetermination . in addition , we drew our remaining capacity to bring our outstanding borrowings to approximately $ 350.0 million and outstanding letters of credit of $ 20.0 million , with approximately $ 86.0 million of cash on hand after completing that borrowing . we did not obtain covenant relief as part of the redetermination , but that remains an important objective for us as we strive to continue to comply with all the terms of our debt . we believe that the combined operating cash flow and cash currently on our balance sheet will be sufficient to allow us to carry out the desired development program , despite the associated negative free cash flow . our ability to reduce well costs and to more precisely assess the productivity of wells under our new spacing design tests are important to our success in 2019 and beyond as we evaluate our future prospects and opportunities . as we execute our business strategy , we will continually monitor the capital resources available to meet future financial obligations and planned capital expenditures . we believe our cash flows provided by operating activities and funds sourced by the alta mesa rbl will allow us to pursue our currently planned development activities . we can not provide assurance that operations and other needed capital will be available on acceptable terms , or at all . a detailed description of our debt including the significant terms and associated requirements is found in item 8 . 51 alta mesa rbl in connection with the consummation of the business combination , all indebtedness at that time under the alta mesa senior secured revolving credit facility was repaid in full and we entered into the alta mesa rbl , which provided an aggregate maximum credit amount of $ 1.0 billion with an initial $ 350.0 million borrowing base , which will be redetermined semi-annually . the alta mesa rbl matures on february 9 , 2023. in april 2018 , the borrowing base was increased to $ 400.0 million , which was reaffirmed by the lenders during the fourth quarter of 2018. as of december 31 , 2018 , in addition to $ 161.0 million of borrowings outstanding , we also had $ 21.9 million of outstanding letters of credit , leaving a total borrowing capacity of $ 217.1 million remaining available for future use . on april 1 , 2019 , the borrowing base was reduced to $ 370.0 million upon completion of the regularly scheduled semi-annual redetermination . during april 2019 , we drew $ 70.0 million to consume all the remaining capacity under the alta mesa rbl . the alta mesa rbl includes usual and customary covenants for facilities of its type and size . the covenants cover matters such as mandatory reserve reports , the responsible operation and maintenance of properties , certifications of compliance , required disclosures to the lenders , notices under other material instruments , and notices of sales of oil and gas properties . it also places limitations on the incurrence of additional indebtedness , restricted payments , distributions , investments outside of the ordinary course of business and the amount of hedges that we can put in place . we are not permitted to borrow funds if we are not in compliance with the financial covenants . the alta mesa rbl bears interest at libor plus an additional margin , based on the percentage of the borrowing base being utilized , ranging from 1.50 % to 2.50 % . there is also a commitment fee that ranges between 0.375 % and 0.50 % on the undrawn borrowing base amounts . the rbl may be prepaid without a premium . interest on outstanding facility debt was libor+2.00 % at december 31 , 2018. the alta mesa rbl has two financial maintenance covenants ( each as determined under the applicable definitions ) : a ratio of current assets to current liabilities of not less than 1.0 ; and a consolidated total leverage ratio of not more than 4.0. during 2019 , we may be unable to satisfy the consolidated total leverage ratio and recognize the need to obtain covenant relief or to replace the alta mesa rbl with debt that would allow us to meet any attendant covenant requirements . in addition , we are currently in default under the alta mesa rbl for our failure to provide certain information by may 15 , 2019 for the fiscal quarter ended march 31 , 2019. the default can be cured by providing the information by june 14 , 2019 . 2024 notes alta mesa has $ 500.0 million in aggregate principal amount of 7.875 % senior unsecured notes ( the “ 2024 notes ” ) that were issued at par by alta mesa and its wholly owned subsidiary alta mesa finance services corp. during the fourth quarter of 2016. the 2024 notes were issued in a private placement but were exchanged for substantially identical registered senior notes in november 2017. the 2024 notes will mature in december 2024 , and interest is payable semi-annually on june 15 and december 15 of each year . alta mesa may , from time to time ,

cash flows replace_table_token_27_th cash flows from operating activities cash provided by operating activities ( including operating activities of discontinued operations ) was $ 93.5 million , $ 26.3 million and $ 59.3 million for the successor period , the 2018 predecessor period and the year ended december 31 , 2017 , respectively . cash-based items of net income ( loss ) , including revenue ( exclusive of unrealized commodity gains or losses ) , operating expenses and taxes , general and administrative expenses , and the cash portion of our interest expense were approximately $ 139.2 million , $ 1.0 million and $ 95.2 million for the successor period , 2018 predecessor period and the year ended december 31 , 2017 , respectively . changes in working capital and other assets and liabilities in a decrease in cash of approximately $ 47.7 million and $ 35.9 million for the successor period and the year ended december 31 , 2017 , respectively . changes in working capital and other assets and liabilities during the 2018 predecessor period resulted in an increase in cash of approximately $ 51.7 million . cash provided by operating activities ( including operating activities of discontinued operations ) was $ 59.3 million and $ 131.7 million for the years ended december 31 , 2017 and 2016 , respectively . the changes in our working capital accounts used $ 35.9 million in cash as compared to having provided $ 28.1 million in cash in 2016 . cash-based items of net income , including revenue ( exclusive of unrealized commodity gains or losses ) , operating expenses and taxes , general and administrative expenses , and the cash portion of our interest expense were approximately $ 95.2 million and $ 103.6 million for the years ended december 31 , 2017 and 2016 , respectively . cash flow from investing activities approximately $ 643.7 million of cash was used by investing activities ( including investing activities from discontinued operations ) in the successor period . $ 37.9 million and $ 345.9 million were for the 2018 predecessor period and 2017 predecessor period , respectively .


 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.
     ```cash flows replace_table_token_27_th cash flows from operating activities cash provided by operating activities ( including operating activities of discontinued operations ) was $ 93.5 million , $ 26.3 million and $ 59.3 million for the successor period , the 2018 predecessor period and the year ended december 31 , 2017 , respectively . cash-based items of net income ( loss ) , including revenue ( exclusive of unrealized commodity gains or losses ) , operating expenses and taxes , general and administrative expenses , and the cash portion of our interest expense were approximately $ 139.2 million , $ 1.0 million and $ 95.2 million for the successor period , 2018 predecessor period and the year ended december 31 , 2017 , respectively . changes in working capital and other assets and liabilities in a decrease in cash of approximately $ 47.7 million and $ 35.9 million for the successor period and the year ended december 31 , 2017 , respectively . changes in working capital and other assets and liabilities during the 2018 predecessor period resulted in an increase in cash of approximately $ 51.7 million . cash provided by operating activities ( including operating activities of discontinued operations ) was $ 59.3 million and $ 131.7 million for the years ended december 31 , 2017 and 2016 , respectively . the changes in our working capital accounts used $ 35.9 million in cash as compared to having provided $ 28.1 million in cash in 2016 . cash-based items of net income , including revenue ( exclusive of unrealized commodity gains or losses ) , operating expenses and taxes , general and administrative expenses , and the cash portion of our interest expense were approximately $ 95.2 million and $ 103.6 million for the years ended december 31 , 2017 and 2016 , respectively . cash flow from investing activities approximately $ 643.7 million of cash was used by investing activities ( including investing activities from discontinued operations ) in the successor period . $ 37.9 million and $ 345.9 million were for the 2018 predecessor period and 2017 predecessor period , respectively .
```    
 Suspicious Activity Report : factors affecting oil prices include worldwide economic conditions ; geopolitical activities in various regions of the world ; worldwide supply and demand conditions ; weather conditions ; actions taken by the organization of petroleum exporting countries ; and the value of the u.s. dollar in international currency markets . commodity prices remain unpredictable and it is uncertain whether the increase in market prices experienced in recent months will be sustained . as a result , we can not accurately predict future commodity prices and , therefore , can not determine with any degree of certainty what effect increases or decreases in these prices will have on our capital expenditures , production volumes or revenues . in the event that oil , gas and ngls prices significantly decrease , such decreases could have a material adverse effect on our financial condition , the carrying value of our oil and natural gas properties , our proved reserves and our ability to finance operations , including the amount of the borrowing capacity under the alta mesa rbl . the following table sets forth the historical average new york mercantile exchange spot prices : replace_table_token_10_th going concern 39 our present level of indebtedness and the current commodity price environment present challenges to our ability to comply with the covenants in the agreements governing our indebtedness . as a result of the recent decrease in our forecasted production levels , increased operating costs , and pressures created by lower commodity prices , in the absence of one or more deleveraging transactions , we do not anticipate maintaining compliance with the consolidated total leverage ratio covenant in the alta mesa rbl as early as the measurement date of june 30 , 2019. our parent 's board of directors and its financial advisors are evaluating the available financial alternatives , including , without limitation , seeking amendments or waivers to the covenants or other provisions of our indebtedness , raising new capital from the private or public markets or taking other actions to address our capital structure . if we are unable to reach an agreement with our lenders or find acceptable alternative financing , it may lead to an event of default under the alta mesa rbl . if following an event of default , the alta mesa rbl lenders were to accelerate repayment , it may result in an event of default and an acceleration under the 2024 notes . we have concluded that these circumstances create substantial doubt regarding our ability to continue as a going concern . for a more detailed discussion , please read “ item 1a . risk factors . ” derivatives the objective of our hedging program is to produce , over time , relative revenue stability . however , in the short-term , both settlements and fair value changes in our derivatives can significantly impact our results of operations , and we expect these gains and losses to continue to reflect the impact of changes in oil and gas prices . our derivatives are reported at fair value and are sensitive to changes in the price of oil and gas . changes in derivatives are reported as gain ( loss ) on derivatives , which include both the unrealized increase and decrease in their fair value , as well as the effect of realized settlements during the period . for the successor period , we recognized a net loss on our derivatives of $ 10.2 million , which includes $ 39.0 million in cash settlements paid for derivatives . our alta mesa rbl generally has minimum and maximum hedging limits as further described elsewhere . impairments in late fourth quarter of 2018 , the combination of depressed prevailing oil and gas prices , changes to assumed spacing in conjunction with evolving views on the viability of multiple benches and reduced individual well expectations resulted in impairment charges of $ 2.0 billion to our proved and unproved oil and gas properties . individual well expectations were impacted by reductions in estimated reserve recovery of original oil and gas in place . at the time of the business combination , we believed that the stratigraphy underlying our acreage was conducive to development of three distinct benches within the broader mississippian section . proved reserve assumptions at the time of the business combination were based on initial wells drilled in the stack , stated expectations from other operators in the stack as well as analogous results from other resource plays . these proved reserve assumptions included spacing of four wells per section and probable and possible resource assumptions included an incremental three wells per section for a total of seven wells per section . an incremental five wells per section ( for a total of 12 wells per section ) were classified as contingent resources to which no value was assigned in the purchase price allocation for the business combination . we expected all proved and unproved wells to deliver similar results of approximately 250 mbbl of reserve recovery . our 2018 drilling program was executed under these assumptions and by early 2019 , we had 17 different sectional development patterns with six to ten wells per section and meaningful production results . the pattern wells generally produced as expected for the initial 60 days but began to fall below type curve after 90-120 days , which we believe was due to interference associated with the current spacing and benches . story_separator_special_tag if we have adequate liquidity to fund such operations , we expect to drill and bring online approximately 60 wells during 2019 while incurring approximately $ 140.0 million to $ 155.0 million of capital expenditures related to this development program . we also expect that an additional $ 18.0 million to $ 23.0 million could be incurred for non-operated projects , leasehold costs and capitalized workover activity . we do not expect our operating cash flow to provide sufficient proceeds to meet this level of expenditure and we would be required to utilize proceeds from borrowings under the alta mesa rbl , if capacity becomes available to us . during april 2019 , our borrowing base was reduced from $ 400.0 million to $ 370.0 million as part of the semi-annual redetermination . in addition , we drew our remaining capacity to bring our outstanding borrowings to approximately $ 350.0 million and outstanding letters of credit of $ 20.0 million , with approximately $ 86.0 million of cash on hand after completing that borrowing . we did not obtain covenant relief as part of the redetermination , but that remains an important objective for us as we strive to continue to comply with all the terms of our debt . we believe that the combined operating cash flow and cash currently on our balance sheet will be sufficient to allow us to carry out the desired development program , despite the associated negative free cash flow . our ability to reduce well costs and to more precisely assess the productivity of wells under our new spacing design tests are important to our success in 2019 and beyond as we evaluate our future prospects and opportunities . as we execute our business strategy , we will continually monitor the capital resources available to meet future financial obligations and planned capital expenditures . we believe our cash flows provided by operating activities and funds sourced by the alta mesa rbl will allow us to pursue our currently planned development activities . we can not provide assurance that operations and other needed capital will be available on acceptable terms , or at all . a detailed description of our debt including the significant terms and associated requirements is found in item 8 . 51 alta mesa rbl in connection with the consummation of the business combination , all indebtedness at that time under the alta mesa senior secured revolving credit facility was repaid in full and we entered into the alta mesa rbl , which provided an aggregate maximum credit amount of $ 1.0 billion with an initial $ 350.0 million borrowing base , which will be redetermined semi-annually . the alta mesa rbl matures on february 9 , 2023. in april 2018 , the borrowing base was increased to $ 400.0 million , which was reaffirmed by the lenders during the fourth quarter of 2018. as of december 31 , 2018 , in addition to $ 161.0 million of borrowings outstanding , we also had $ 21.9 million of outstanding letters of credit , leaving a total borrowing capacity of $ 217.1 million remaining available for future use . on april 1 , 2019 , the borrowing base was reduced to $ 370.0 million upon completion of the regularly scheduled semi-annual redetermination . during april 2019 , we drew $ 70.0 million to consume all the remaining capacity under the alta mesa rbl . the alta mesa rbl includes usual and customary covenants for facilities of its type and size . the covenants cover matters such as mandatory reserve reports , the responsible operation and maintenance of properties , certifications of compliance , required disclosures to the lenders , notices under other material instruments , and notices of sales of oil and gas properties . it also places limitations on the incurrence of additional indebtedness , restricted payments , distributions , investments outside of the ordinary course of business and the amount of hedges that we can put in place . we are not permitted to borrow funds if we are not in compliance with the financial covenants . the alta mesa rbl bears interest at libor plus an additional margin , based on the percentage of the borrowing base being utilized , ranging from 1.50 % to 2.50 % . there is also a commitment fee that ranges between 0.375 % and 0.50 % on the undrawn borrowing base amounts . the rbl may be prepaid without a premium . interest on outstanding facility debt was libor+2.00 % at december 31 , 2018. the alta mesa rbl has two financial maintenance covenants ( each as determined under the applicable definitions ) : a ratio of current assets to current liabilities of not less than 1.0 ; and a consolidated total leverage ratio of not more than 4.0. during 2019 , we may be unable to satisfy the consolidated total leverage ratio and recognize the need to obtain covenant relief or to replace the alta mesa rbl with debt that would allow us to meet any attendant covenant requirements . in addition , we are currently in default under the alta mesa rbl for our failure to provide certain information by may 15 , 2019 for the fiscal quarter ended march 31 , 2019. the default can be cured by providing the information by june 14 , 2019 . 2024 notes alta mesa has $ 500.0 million in aggregate principal amount of 7.875 % senior unsecured notes ( the “ 2024 notes ” ) that were issued at par by alta mesa and its wholly owned subsidiary alta mesa finance services corp. during the fourth quarter of 2016. the 2024 notes were issued in a private placement but were exchanged for substantially identical registered senior notes in november 2017. the 2024 notes will mature in december 2024 , and interest is payable semi-annually on june 15 and december 15 of each year . alta mesa may , from time to time ,

