Common use of Proposed Project Description Clause in Contracts

Proposed Project Description. Enterprise Products Operating LLC (“Enterprise”) is proposing a new Ethylene manufacturing facility at our Mont Belvieu complex in Xxxxxxxx County.The proposed project is an Ethane Cracker unit to manufacture ethylene, a primary petrochemical intermediate that is further processed into polyethylene resin. The resulting product is used in the manufacture of plastics for pipe, bags, food and beverage containers, household chemicals bottles, and other products. The proposed Ethane Cracker unit has a designated ethylene production capacity of 2,000 kilotons per annum. Xxxxxx Xxxxxxx -Manufacturing process: Ethane is fed to furnaces where it is cracked under severe conditions forming ethylene. The furnace outlet stream is fed to a water-based quench, to stop the reaction and prevent the formation of undesirable byproducts. Heavies, tar, and coke are removed and the cracked gas is compressed. Carbon dioxide and sulfur are removed from the cracked gas in a caustic scrubber. The compressed cracked gas is cooled and water is removed by molecular sieves. The cracked gas is then fed to a cold box to further reduce temperature and then to a deethanizer where ethane/ethylene and lighter products are separated overhead. This overhead stream is partially hydrogenated to remove acetylene, which is converted to ethylene, and then is chilled before it is sent to the demethanizer. The demethanizer separates methane and hydrogen overhead for use as fuel gas. The demethanizer bottom stream is sent to the ethylene splitter. Polymer-grade ethylene is the overhead product of the splitter, while ethane in the bottom stream is recycled to the furnaces. The deethanizer bottoms stream is sent to the depropanizer. The overhead product of the depropanizer is a mixed propylene and byproduct stream that is partially hydrogenated to remove MAPD (methyl acetylene & propadiene), which is converted to propylene and sent to storage. The depropanizer bottoms is a stream of butanes and heavier that is sent to the debutanizer. The overhead product of the debutanizer is a mixed butane stream that is sent to storage. The bottoms from the debutanizer is a light pygas product that is sent to storage. Xxxxxx Xxxxxxx -Significant components of the facility would include: ❖ The facility consists of the following: ⮚ Cracking furnaces and supporting steam production system including boilers, water treatment facilities, and a cooling tower ⮚ Quench tower and separation ⮚ Cracked gas compression train, acid gas removal, and dehydration ⮚ Compressed gas refrigeration cold box and lights removal ⮚ Fractionation and hydrogenation conversion to ethylene and propylene ⮚ Propylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams ⮚ Ethylene or methane/ethylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams Land is not part of the qualified property Not applicable Description of all property not eligible to become qualified property Not Applicable – All property will be eligible to become qualified property Maps that clearly show:

Proposed Project Description. Enterprise Products Operating LLC (“Enterprise”) is proposing a new Ethylene manufacturing facility at our Mont Belvieu complex in Xxxxxxxx County.. The proposed project is an Ethane Cracker unit to manufacture ethylene, a primary petrochemical intermediate that is further processed into polyethylene resin. The resulting product is used in the manufacture of plastics for pipe, bags, food and beverage containers, household chemicals bottles, and other products. The proposed Ethane Cracker unit has a designated ethylene production capacity of 2,000 kilotons per annum. Xxxxxx Xxxxxxx -Manufacturing process: Ethane is fed to furnaces where it is cracked under severe conditions forming ethylene. The furnace outlet stream is fed to a water-based quench, to stop the reaction and prevent the formation of undesirable byproducts. Heavies, tar, and coke are removed and the cracked gas is compressed. Carbon dioxide and sulfur are removed from the cracked gas in a caustic scrubber. The compressed cracked gas is cooled and water is removed by molecular sieves. The cracked gas is then fed to a cold box to further reduce temperature and then to a deethanizer where ethane/ethylene and lighter products are separated overhead. This overhead stream is partially hydrogenated to remove acetylene, which is converted to ethylene, and then is chilled before it is sent to the demethanizer. The demethanizer separates methane and hydrogen overhead for use as fuel gas. The demethanizer bottom stream is sent to the ethylene splitter. Polymer-grade ethylene is the overhead product of the splitter, while ethane in the bottom stream is recycled to the furnaces. The deethanizer bottoms stream is sent to the depropanizer. The overhead product of the depropanizer is a mixed propylene and byproduct stream that is partially hydrogenated to remove MAPD (methyl acetylene & propadiene), which is converted to propylene and sent to storage. The depropanizer bottoms is a stream of butanes and heavier that is sent to the debutanizer. The overhead product of the debutanizer is a mixed butane stream that is sent to storage. The bottoms from the debutanizer is a light pygas product that is sent to storage. Xxxxxx Xxxxxxx -Significant components of the facility would include: ❖ The facility consists of the following: ⮚ Cracking furnaces and supporting steam production system including boilers, water treatment facilities, and Limitation is a cooling tower ⮚ Quench tower and separation ⮚ Cracked gas compression train, acid gas removal, and dehydration ⮚ Compressed gas refrigeration cold box and lights removal ⮚ Fractionation and hydrogenation conversion to ethylene and propylene ⮚ Propylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams ⮚ Ethylene or methane/ethylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams Land is not part of the qualified property Not applicable Description of all property not eligible to become qualified property Not Applicable – All property will be eligible to become qualified property Maps that clearly show:Determining Factor

Proposed Project Description. Enterprise Products Operating LLC (“Enterprise”) is proposing a new Ethylene manufacturing facility at our Mont Belvieu complex in Xxxxxxxx County.. The proposed project is an Ethane Cracker unit to manufacture ethylene, a primary petrochemical intermediate that is further processed into polyethylene resin. The resulting product is used in the manufacture of plastics for pipe, bags, food and beverage containers, household chemicals bottles, and other products. The proposed Ethane Cracker unit has a designated ethylene production capacity of 2,000 kilotons per annum. Xxxxxx Xxxxxxx -Manufacturing process: Ethane is fed to furnaces where it is cracked under severe conditions forming ethylene. The furnace outlet stream is fed to a water-based quench, to stop the reaction and prevent the formation of undesirable byproducts. Heavies, tar, and coke are removed and the cracked gas is compressed. Carbon dioxide and sulfur are removed from the cracked gas in a caustic scrubber. The compressed cracked gas is cooled and water is removed by molecular sieves. The cracked gas is then fed to a cold box to further reduce temperature and then to a deethanizer where ethane/ethylene and lighter products are separated overhead. This overhead stream is partially hydrogenated to remove acetylene, which is converted to ethylene, and then is chilled before it is sent to the demethanizer. The demethanizer separates methane and hydrogen overhead for use as fuel gas. The demethanizer bottom stream is sent to the ethylene splitter. Polymer-grade ethylene is the overhead product of the splitter, while ethane in the bottom stream is recycled to the furnaces. The deethanizer bottoms stream is sent to the depropanizer. The overhead product of the depropanizer is a mixed propylene and byproduct stream that is partially hydrogenated to remove MAPD (methyl acetylene & propadiene), which is converted to propylene and sent to storage. The depropanizer bottoms is a stream of butanes and heavier that is sent to the debutanizer. The overhead product of the debutanizer is a mixed butane stream that is sent to storage. The bottoms from the debutanizer is a light pygas product that is sent to storage. Xxxxxx Xxxxxxx -Significant components of the facility would include: ❖ • The facility consists of the following: ⮚ o Cracking furnaces and supporting steam production system including boilers, water treatment facilities, and a cooling tower ⮚ o Quench tower and separation ⮚ o Cracked gas compression train, acid gas removal, and dehydration ⮚ o Compressed gas refrigeration cold box and lights removal ⮚ o Fractionation and hydrogenation conversion to ethylene and propylene ⮚ o Propylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams ⮚ o Ethylene or methane/ethylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams Land The major component of this unit includes, but is not part of limited to the qualified property Not applicable Description of all property not eligible to become qualified property Not Applicable – All property will be eligible to become qualified property Maps that clearly show:following: • Cooling tower • Caustic tower • Feed coalescer • Ethane furnaces • Absorber tower • Process vessels • Thermocouples • Process Piping • Process Pumps • Motors • Exchangers • Process analyzers • Flare system • Wastewater treatment unit • Process tanks • Storage tanks • Process Control System • Compression Equipment

Proposed Project Description. Enterprise Products Operating LLC (“Enterprise”) is proposing a new Ethylene manufacturing facility at our Mont Belvieu complex in Xxxxxxxx County.The proposed project is an Ethane Cracker unit to manufacture ethylene, a primary petrochemical intermediate that is further processed into polyethylene resin. The resulting product is used in the manufacture of plastics for pipe, bags, food and beverage containers, household chemicals bottles, and other products. The proposed Ethane Cracker unit has a designated ethylene production capacity of 2,000 kilotons per annum. Xxxxxx Xxxxxxx -Manufacturing process: Ethane is fed to furnaces where it is cracked under severe conditions forming ethylene. The furnace outlet stream is fed to a water-based quench, to stop the reaction and prevent the formation of undesirable byproducts. Heavies, tar, and coke are removed and the cracked gas is compressed. Carbon dioxide and sulfur are removed from the cracked gas in a caustic scrubber. The compressed cracked gas is cooled and water is removed by molecular sieves. The cracked gas is then fed to a cold box to further reduce temperature and then to a deethanizer where ethane/ethylene and lighter products are separated overhead. This overhead stream is partially hydrogenated to remove acetylene, which is converted to ethylene, and then is chilled before it is sent to the demethanizer. The demethanizer separates methane and hydrogen overhead for use as fuel gas. The demethanizer bottom stream is sent to the ethylene splitter. Polymer-grade ethylene is the overhead product of the splitter, while ethane in the bottom stream is recycled to the furnaces. The deethanizer bottoms stream is sent to the depropanizer. The overhead product of the depropanizer is a mixed propylene and byproduct stream that is partially hydrogenated to remove MAPD (methyl acetylene & propadiene), which is converted to propylene and sent to storage. The depropanizer bottoms is a stream of butanes and heavier that is sent to the debutanizer. The overhead product of the debutanizer is a mixed butane stream that is sent to storage. The bottoms from the debutanizer is a light pygas product that is sent to storage. Xxxxxx Xxxxxxx -Significant components of the facility would include: ❖ • The facility consists of the following: ⮚ o Cracking furnaces and supporting steam production system including boilers, water treatment facilities, and a cooling tower ⮚ o Quench tower and separation ⮚ o Cracked gas compression train, acid gas removal, and dehydration ⮚ o Compressed gas refrigeration cold box and lights removal ⮚ o Fractionation and hydrogenation conversion to ethylene and propylene ⮚ o Propylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams ⮚ o Ethylene or methane/ethylene refrigeration system for chilling of cracked gas in the cold box and fractionation feed/product streams Land The major component of this unit includes, but is not part of limited to the qualified property Not applicable Description of all property not eligible to become qualified property Not Applicable – All property will be eligible to become qualified property Maps that clearly show:following: • Cooling tower • Caustic tower • Feed coalescer • Ethane furnaces • Absorber tower • Process vessels • Thermocouples • Process Piping • Process Pumps • Motors • Exchangers • Process analyzers • Flare system • Wastewater treatment unit • Process tanks • Storage tanks • Process Control System • Compression Equipment • Distillation Columns Exhibit 4