( c ) effective january 1 , 2019 , these assets were transferred from the products pipelines business segment to the natural gas pipelines business segment . ( d ) effective january 1 , 2019 , a small number of terminals were transferred between the products pipelines and terminals business segments . competition our products pipelines 2019 pipeline operations compete against proprietary pipelines owned and operated by major oil companies , other independent products pipelines , trucking and marine transportation firms ( for short-haul movements of products ) and railcars . our products pipelines 2019 terminal operations compete with proprietary terminals owned and operated by major oil companies and other independent terminal operators , and our transmix operations compete with refineries owned by major oil companies and independent transmix facilities . terminals our terminals business segment includes the operations of our refined petroleum product , crude oil , chemical , ethanol and other liquid terminal facilities ( other than those included in the products pipelines business segment ) and all of our petroleum coke , metal and ores facilities . our terminals are located throughout the u.s . and in portions of canada . we believe the location of our facilities and our ability to provide flexibility to customers help attract new and retain existing customers at our terminals and provide expansion opportunities . we often classify our terminal operations based on the handling of either liquids or dry-bulk material products . in addition , terminals 2019 marine operations include jones act-qualified product tankers that provide marine transportation of crude oil , condensate and refined petroleum products between u.s . ports . the following summarizes our terminals business segment assets , as of december 31 , 2018 : number capacity ( mmbbl ) .
what percent of storage facilities are liquid terminals
_______ ( a ) effective january 1 , 2019 , a small number of terminals were transferred between the terminals and products pipelines business segments . competition we are one of the largest independent operators of liquids terminals in north america , based on barrels of liquids terminaling capacity . our liquids terminals compete with other publicly or privately held independent liquids terminals , and terminals owned by oil , chemical , pipeline , and refining companies . our bulk terminals compete with numerous independent terminal operators , terminals owned by producers and distributors of bulk commodities , stevedoring companies and other industrial companies opting not to outsource terminaling services . in some locations , competitors are smaller , independent operators with lower cost structures . our jones act-qualified product tankers compete with other jones act qualified vessel fleets . our co2 business segment produces , transports , and markets co2 for use in enhanced oil recovery projects as a flooding medium for recovering crude oil from mature oil fields . our co2 pipelines and related assets allow us to market a complete package of co2 supply and transportation services to our customers . we also hold ownership interests in several oil-producing fields and own a crude oil pipeline , all located in the permian basin region of west texas. .