physical trading also has price risk on any net open positions at the end of each trading day , as well as volatility resulting from : ( i ) intra-day fluctuations of natural gas and or propane prices , and ( ii ) daily price movements between the time natural gas and or propane is purchased or sold for future delivery and the time the related purchase or sale is economically hedged . the determination of our net open position at the end of any trading day requires us to make assumptions as to future circumstances , including the use of natural gas and or propane by our customers in relation to its anticipated market positions . because the price risk associated with any net open position at the end of such day chesapeake utilities corporation 2013 form 10-k page 12 may increase if the assumptions are not realized , we review these assumptions daily . net open positions may increase volatility in our financial condition or results of operations if market prices move in a significantly favorable or unfavorable manner , because the changes in fair value of trading contracts are immediately recognized as profits or losses for financial accounting purposes . this volatility may occur , with a resulting increase or decrease in earnings or losses , even though the expected profit margin is essentially unchanged from the date the transactions were consummated . our energy marketing subsidiaries are exposed to credit risk of their counterparties . our energy marketing subsidiaries extend credit to counterparties and continually monitor and manage collections aggressively . each of these subsidiaries is exposed to the risk that it may not be able to collect amounts owed to it . if the counterparty to such a transaction fails to perform , and any underlying collateral is inadequate , we could experience financial losses . our energy marketing subsidiaries are dependent upon the availability of credit to successfully operate their businesses . our energy marketing subsidiaries are dependent upon the availability of credit to buy propane and natural gas for resale or to trade . if financial market conditions decline generally , or the financial condition of these subsidiaries or of our company declines , then the cost of credit available to these subsidiaries could increase . if credit is not available , or if credit is more costly , our results of operations , cash flows and financial condition may be adversely affected . current market conditions have adversely impacted the return on plan assets for our pension plans , which may require significant additional funding . we have pension plans that are closed to new employees and the future benefits are frozen . the costs of providing benefits and related funding requirements of these plans are subject to changes in the market value of the assets that fund the plans and the discount rates used to estimate the pension benefit obligations . as a result of the extreme volatility and disruption in the domestic and international equity , bond and interest rate markets in recent years , the asset values and benefit obligations of chesapeake 's and fpu 's pension plans have fluctuated significantly since 2008. the funded status of the plans and the related costs reflected in our financial statements are affected by various factors that are subject to an inherent degree of uncertainty , particularly in the current economic environment . future losses of asset values and further declines in discount rates may necessitate accelerated funding of the plans in the future to meet minimum federal government requirements as well as higher pension expense to be recorded in future years . adverse changes in the asset values and benefit obligations of our pension plans may require us to record higher pension expense and fund obligations earlier than originally planned , which would have an adverse impact on our cash flows from operations , decrease borrowing capacity and increase interest expense . o perational r isks fluctuations in weather may cause a significant variance in our earnings . our natural gas and propane distribution operations are sensitive to fluctuations in weather conditions , which directly influence the volume of natural gas and propane we sell and deliver to our customers . a significant portion of our natural gas and propane distribution revenues is derived from the sales and deliveries of natural gas and propane to residential and commercial heating customers during the five-month peak heating season ( november through march ) . if the weather is warmer than normal , we sell and deliver less natural gas and propane to customers , and earn less revenue , which could adversely affect our results of operations , cash flows and financial condition . our electric operation is also affected by variations in general weather conditions and particularly unusually severe weather conditions . electricity is generally less seasonal than natural gas and propane sales because it is used for both heating and cooling in our service areas . the amount and availability of natural gas , propane and electricity supplies are difficult to predict ; a substantial reduction in available supplies could reduce our earnings in those segments . natural gas , propane and electricity production can be affected by factors beyond our control , such as weather and closings of energy generation facilities and refineries . if we are unable to obtain sufficient natural gas , electricity and propane supplies to meet demand , results in those businesses may be adversely affected . any substantial decrease in the availability of supplies of natural gas , propane and electricity could result in increased supply costs and higher prices for customers , which could also adversely affect our financial condition and results of operations . story_separator_special_tag we maintain insurance policies with insurers to cover our general liabilities in the amount of $ 51 million , which we believe are reasonable and prudent . there can be no assurance , however , that such insurance will be adequate to protect us from all material expenses related to potential future claims for personal injury and property damage or that such levels of insurance will be available in the future at economical prices . we may face certain regulatory and financial risks related to pipeline safety legislation . a number of legislative proposals to implement increased oversight over natural gas pipeline operations and increased investment in facilities to inspect pipeline facilities , upgrade pipeline facilities , or control the impact of a breach of such facilities are pending at the federal level . additional operating expenses and capital expenditures may be necessary to remain in compliance with the increased federal oversight resulting from such proposals . if such legislation is adopted and we incur additional expenses and expenditures as a result , our financial condition , results of operations and cash flows could be adversely affected , particularly if we are not authorized through the regulatory process to recover from customers some or all of these costs and our authorized rate of return . costs of compliance with environmental laws may be significant . we are subject to federal , state and local laws and regulations governing environmental quality and pollution control . these evolving laws and regulations may require expenditures over a long period of time to control environmental effects at our current and former operating sites , especially former mgp sites . compliance with these legal obligations requires us to commit capital . if we fail to comply with environmental laws and regulations , even if such failure is caused by factors beyond our control , we may be assessed civil or criminal penalties and fines . to date , we have been able to recover , through regulatory rate mechanisms , the costs associated with the remediation of former mgp sites . there is no guarantee , however , that we will be able to recover future remediation costs in the same manner or at all . a change in our approved rate mechanisms for recovery of environmental remediation costs at former mgp sites could adversely affect our results of operations , cash flows and financial condition . further , existing environmental laws and regulations may be revised , or new laws and regulations seeking to protect the environment may be adopted and be applicable to us . revised or additional laws and regulations could result in additional operating restrictions on our facilities or increased compliance costs , which may not be fully recoverable . derivatives legislation and the implementation of related rules could have an adverse impact on our ability to hedge risks associated with our business . the dodd-frank act regulates derivative transactions , which include certain instruments used in our risk management activities . the dodd-frank act contemplates that most swaps will be required to be cleared through a registered clearing facility and traded on a designated exchange or swap execution facility , subject to certain exceptions for entities that use swaps to hedge or mitigate commercial risk . although the dodd-frank act includes significant new provisions regarding the regulation of derivatives , the impact of those requirements will not be known definitively until regulations have been adopted and fully implemented by both the sec and the commodities futures trading commission , and market participants establish registered clearing facilities under those regulations . the legislation and any new regulations could increase the operational and transactional cost of derivatives contracts and affect the number and or creditworthiness of available counterparties . chesapeake utilities corporation 2013 form 10-k page 17 our business may be subject in the future to additional regulatory and financial risks associated with global warming and climate change . there have been a number of federal and state legislative and regulatory initiatives proposed in recent years in an attempt to control or limit the effects of global warming and overall climate change , including greenhouse gas emissions , such as carbon dioxide . the adoption of this type of legislation by congress or similar legislation by states or the adoption of related regulations by federal or state governments mandating a substantial reduction in greenhouse gas emissions in the future could have far-reaching and significant impacts on the energy industry . such new legislation or regulations could result in increased compliance costs for us or additional operating restrictions on our business , affect the demand for natural gas and propane or impact the prices we charge to our customers . at this time , we can not predict the potential impact of such laws or regulations that may be adopted on our future business , financial condition or financial results . chesapeake utilities corporation 2013 form 10-k page 18 i tem 1b . u nresolved s taff c omments . none . i tem 2. p roperties . key properties we own approximately 1,214 miles of natural gas distribution mains ( together with related service lines , meters and regulators ) located in new castle , kent and sussex counties , delaware ; and cecil , caroline , dorchester , wicomico and worcester counties , maryland . we own 2,642 miles of natural gas distribution mains ( and related equipment ) in nassau , polk , osceola , citrus , desoto , liberty , hillsborough , holmes , jackson , gadsden , gilchrist , union , washington , pasco , suwannee , palm beach , broward , martin , marion , seminole and volusia counties , florid a. in addition , we have adequate gate stations to handle receipt of the gas into each of the distribution systems . we also own facilities in delaware and maryland , which we use for propane-air injection during periods of peak demand . we own and

cash flows the following table provides a summary of our operating , investing and financing cash flows for the years ended december 31 , 2013 , 2012 and 2011 : replace_table_token_28_th cash flows provided by operating activities changes in our cash flows from operating activities are attributable primarily to changes in net income and working capital , adjusted for non-cash adjustments for depreciation and deferred income taxes and other deferrals . changes in working capital are determined by a variety of factors , including weather , the prices of natural gas , electricity and propane , the timing of customer collections , payments for purchases of natural gas , electricity and propane , and deferred fuel cost recoveries . we normally generate a large portion of our annual net income and related increases in our accounts receivable in the first and fourth quarters of each year due to significant volumes of natural gas and propane delivered by our natural gas and propane distribution operations to customers during the peak heating season . in addition , our natural gas and propane inventories , which usually peak in the fall months , are largely drawn down in the heating season and provide a source of cash as the inventory is used to satisfy winter sales demand . during 2013 and 2012 , net cash provided by operating activities was $ 72.9 million , and $ 66.6 million resulting in an increase in cash flows of $ 6.3 million . significant operating activities generating the cash flow change were as follows : net income , adjusted for reconciling activities , increased cash flows by $ 5.6 million , due primarily to higher earnings and increased non-cash items , such as depreciation and amortization expenses included in our earnings ; lower net regulatory liabilities increased cash flows by $ 7.3


 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 the following table provides a summary of our operating , investing and financing cash flows for the years ended december 31 , 2013 , 2012 and 2011 : replace_table_token_28_th cash flows provided by operating activities changes in our cash flows from operating activities are attributable primarily to changes in net income and working capital , adjusted for non-cash adjustments for depreciation and deferred income taxes and other deferrals . changes in working capital are determined by a variety of factors , including weather , the prices of natural gas , electricity and propane , the timing of customer collections , payments for purchases of natural gas , electricity and propane , and deferred fuel cost recoveries . we normally generate a large portion of our annual net income and related increases in our accounts receivable in the first and fourth quarters of each year due to significant volumes of natural gas and propane delivered by our natural gas and propane distribution operations to customers during the peak heating season . in addition , our natural gas and propane inventories , which usually peak in the fall months , are largely drawn down in the heating season and provide a source of cash as the inventory is used to satisfy winter sales demand . during 2013 and 2012 , net cash provided by operating activities was $ 72.9 million , and $ 66.6 million resulting in an increase in cash flows of $ 6.3 million . significant operating activities generating the cash flow change were as follows : net income , adjusted for reconciling activities , increased cash flows by $ 5.6 million , due primarily to higher earnings and increased non-cash items , such as depreciation and amortization expenses included in our earnings ; lower net regulatory liabilities increased cash flows by $ 7.3
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 Suspicious Activity Report : physical trading also has price risk on any net open positions at the end of each trading day , as well as volatility resulting from : ( i ) intra-day fluctuations of natural gas and or propane prices , and ( ii ) daily price movements between the time natural gas and or propane is purchased or sold for future delivery and the time the related purchase or sale is economically hedged . the determination of our net open position at the end of any trading day requires us to make assumptions as to future circumstances , including the use of natural gas and or propane by our customers in relation to its anticipated market positions . because the price risk associated with any net open position at the end of such day chesapeake utilities corporation 2013 form 10-k page 12 may increase if the assumptions are not realized , we review these assumptions daily . net open positions may increase volatility in our financial condition or results of operations if market prices move in a significantly favorable or unfavorable manner , because the changes in fair value of trading contracts are immediately recognized as profits or losses for financial accounting purposes . this volatility may occur , with a resulting increase or decrease in earnings or losses , even though the expected profit margin is essentially unchanged from the date the transactions were consummated . our energy marketing subsidiaries are exposed to credit risk of their counterparties . our energy marketing subsidiaries extend credit to counterparties and continually monitor and manage collections aggressively . each of these subsidiaries is exposed to the risk that it may not be able to collect amounts owed to it . if the counterparty to such a transaction fails to perform , and any underlying collateral is inadequate , we could experience financial losses . our energy marketing subsidiaries are dependent upon the availability of credit to successfully operate their businesses . our energy marketing subsidiaries are dependent upon the availability of credit to buy propane and natural gas for resale or to trade . if financial market conditions decline generally , or the financial condition of these subsidiaries or of our company declines , then the cost of credit available to these subsidiaries could increase . if credit is not available , or if credit is more costly , our results of operations , cash flows and financial condition may be adversely affected . current market conditions have adversely impacted the return on plan assets for our pension plans , which may require significant additional funding . we have pension plans that are closed to new employees and the future benefits are frozen . the costs of providing benefits and related funding requirements of these plans are subject to changes in the market value of the assets that fund the plans and the discount rates used to estimate the pension benefit obligations . as a result of the extreme volatility and disruption in the domestic and international equity , bond and interest rate markets in recent years , the asset values and benefit obligations of chesapeake 's and fpu 's pension plans have fluctuated significantly since 2008. the funded status of the plans and the related costs reflected in our financial statements are affected by various factors that are subject to an inherent degree of uncertainty , particularly in the current economic environment . future losses of asset values and further declines in discount rates may necessitate accelerated funding of the plans in the future to meet minimum federal government requirements as well as higher pension expense to be recorded in future years . adverse changes in the asset values and benefit obligations of our pension plans may require us to record higher pension expense and fund obligations earlier than originally planned , which would have an adverse impact on our cash flows from operations , decrease borrowing capacity and increase interest expense . o perational r isks fluctuations in weather may cause a significant variance in our earnings . our natural gas and propane distribution operations are sensitive to fluctuations in weather conditions , which directly influence the volume of natural gas and propane we sell and deliver to our customers . a significant portion of our natural gas and propane distribution revenues is derived from the sales and deliveries of natural gas and propane to residential and commercial heating customers during the five-month peak heating season ( november through march ) . if the weather is warmer than normal , we sell and deliver less natural gas and propane to customers , and earn less revenue , which could adversely affect our results of operations , cash flows and financial condition . our electric operation is also affected by variations in general weather conditions and particularly unusually severe weather conditions . electricity is generally less seasonal than natural gas and propane sales because it is used for both heating and cooling in our service areas . the amount and availability of natural gas , propane and electricity supplies are difficult to predict ; a substantial reduction in available supplies could reduce our earnings in those segments . natural gas , propane and electricity production can be affected by factors beyond our control , such as weather and closings of energy generation facilities and refineries . if we are unable to obtain sufficient natural gas , electricity and propane supplies to meet demand , results in those businesses may be adversely affected . any substantial decrease in the availability of supplies of natural gas , propane and electricity could result in increased supply costs and higher prices for customers , which could also adversely affect our financial condition and results of operations . story_separator_special_tag we maintain insurance policies with insurers to cover our general liabilities in the amount of $ 51 million , which we believe are reasonable and prudent . there can be no assurance , however , that such insurance will be adequate to protect us from all material expenses related to potential future claims for personal injury and property damage or that such levels of insurance will be available in the future at economical prices . we may face certain regulatory and financial risks related to pipeline safety legislation . a number of legislative proposals to implement increased oversight over natural gas pipeline operations and increased investment in facilities to inspect pipeline facilities , upgrade pipeline facilities , or control the impact of a breach of such facilities are pending at the federal level . additional operating expenses and capital expenditures may be necessary to remain in compliance with the increased federal oversight resulting from such proposals . if such legislation is adopted and we incur additional expenses and expenditures as a result , our financial condition , results of operations and cash flows could be adversely affected , particularly if we are not authorized through the regulatory process to recover from customers some or all of these costs and our authorized rate of return . costs of compliance with environmental laws may be significant . we are subject to federal , state and local laws and regulations governing environmental quality and pollution control . these evolving laws and regulations may require expenditures over a long period of time to control environmental effects at our current and former operating sites , especially former mgp sites . compliance with these legal obligations requires us to commit capital . if we fail to comply with environmental laws and regulations , even if such failure is caused by factors beyond our control , we may be assessed civil or criminal penalties and fines . to date , we have been able to recover , through regulatory rate mechanisms , the costs associated with the remediation of former mgp sites . there is no guarantee , however , that we will be able to recover future remediation costs in the same manner or at all . a change in our approved rate mechanisms for recovery of environmental remediation costs at former mgp sites could adversely affect our results of operations , cash flows and financial condition . further , existing environmental laws and regulations may be revised , or new laws and regulations seeking to protect the environment may be adopted and be applicable to us . revised or additional laws and regulations could result in additional operating restrictions on our facilities or increased compliance costs , which may not be fully recoverable . derivatives legislation and the implementation of related rules could have an adverse impact on our ability to hedge risks associated with our business . the dodd-frank act regulates derivative transactions , which include certain instruments used in our risk management activities . the dodd-frank act contemplates that most swaps will be required to be cleared through a registered clearing facility and traded on a designated exchange or swap execution facility , subject to certain exceptions for entities that use swaps to hedge or mitigate commercial risk . although the dodd-frank act includes significant new provisions regarding the regulation of derivatives , the impact of those requirements will not be known definitively until regulations have been adopted and fully implemented by both the sec and the commodities futures trading commission , and market participants establish registered clearing facilities under those regulations . the legislation and any new regulations could increase the operational and transactional cost of derivatives contracts and affect the number and or creditworthiness of available counterparties . chesapeake utilities corporation 2013 form 10-k page 17 our business may be subject in the future to additional regulatory and financial risks associated with global warming and climate change . there have been a number of federal and state legislative and regulatory initiatives proposed in recent years in an attempt to control or limit the effects of global warming and overall climate change , including greenhouse gas emissions , such as carbon dioxide . the adoption of this type of legislation by congress or similar legislation by states or the adoption of related regulations by federal or state governments mandating a substantial reduction in greenhouse gas emissions in the future could have far-reaching and significant impacts on the energy industry . such new legislation or regulations could result in increased compliance costs for us or additional operating restrictions on our business , affect the demand for natural gas and propane or impact the prices we charge to our customers . at this time , we can not predict the potential impact of such laws or regulations that may be adopted on our future business , financial condition or financial results . chesapeake utilities corporation 2013 form 10-k page 18 i tem 1b . u nresolved s taff c omments . none . i tem 2. p roperties . key properties we own approximately 1,214 miles of natural gas distribution mains ( together with related service lines , meters and regulators ) located in new castle , kent and sussex counties , delaware ; and cecil , caroline , dorchester , wicomico and worcester counties , maryland . we own 2,642 miles of natural gas distribution mains ( and related equipment ) in nassau , polk , osceola , citrus , desoto , liberty , hillsborough , holmes , jackson , gadsden , gilchrist , union , washington , pasco , suwannee , palm beach , broward , martin , marion , seminole and volusia counties , florid a. in addition , we have adequate gate stations to handle receipt of the gas into each of the distribution systems . we also own facilities in delaware and maryland , which we use for propane-air injection during periods of peak demand . we own and

