DP 22-22-10 Terminal Layout and Spacing

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 1 of 11 Rev. 2

Apr., 1999

TABLE OF CONTENTS SCOPE ................................................................................................................................................................................. 1 REFERENCES ..................................................................................................................................................................... 2 DEFINITIONS ....................................................................................................................................................................... 2 COMBUSTIBLE LIQUID ................................................................................................................................................ 2 CRITICAL AREAS ......................................................................................................................................................... 2 DIKE .............................................................................................................................................................................. 2 DIVERSION WALL ........................................................................................................................................................ 2 FLAMMABLE LIQUID .................................................................................................................................................... 3 FLOATING ROOF TANK ............................................................................................................................................... 3 FIXED ROOF TANK ...................................................................................................................................................... 3 NET DIKE CAPACITY ................................................................................................................................................... 3 PROPERTY LINES........................................................................................................................................................ 3 SPACING....................................................................................................................................................................... 3 TANK DIAMETER.......................................................................................................................................................... 3 TANK SPACING ............................................................................................................................................................ 3 TOEWALL...................................................................................................................................................................... 3 BACKGROUND .................................................................................................................................................................... 3 LAYOUT CONSIDERATIONS FOR TERMINALS ................................................................................................................ 4 GENERAL...................................................................................................................................................................... 4 TRUCK LOADING AREA............................................................................................................................................... 4 BUILDINGS ................................................................................................................................................................... 5 PARKING LOTS ............................................................................................................................................................ 6 DRAINAGE AND WATER TREATMENT....................................................................................................................... 6 PUMP AND MECHANICAL EQUIPMENT AREAS ........................................................................................................ 7 BOILER HOUSE ............................................................................................................................................................ 7 DESIGN CONSIDERATIONS AND GUIDELINES FOR THE TANK FARM AREA............................................................... 7 SITE SELECTION.......................................................................................................................................................... 7 DIKING ARRANGEMENTS AND CAPACITY REQUIREMENTS .................................................................................. 7 DIKE REQUIREMENTS................................................................................................................................................. 8 DRAINAGE FOR DIKED OR TOEWALL ENCLOSURES.............................................................................................. 9 LOCATION, LAYOUT AND SPACING OF TANKS........................................................................................................ 9 FIGURE 1 TYPICAL TRUCK LOADING RACK AREA LAYOUT ....................................................................................... 10 REVISION HISTORY .......................................................................................................................................................... 11 Changes to the prevision revision are marked with an → .

SCOPE This Design Practice presents considerations and requirements for the layout and spacing of equipment for new terminals and modifications of existing ones. It covers the relationship between individual terminal areas, equipment and property lines of the surrounding community. It also covers mandatory safety requirements governing the layout and spacing of atmospheric storage tanks designed for 2.5 psig or less containing flammable and combustible liquids. It also covers tank dike arrangements.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 2 of 11 Rev. 2

Apr., 1999

REFERENCES DESIGN PRACTICES DP 3-3-1 DP 9-9-1 DP 9-9-4 DP 11-11-1 DP 11-11-2 DP 11-11-3 DP 23-22-10

Terminal Piping Arrangement Atmospheric Storage Tanks Underground Tanks – Sizing, Containment, Location Water Management, Segregation and Treatment Selection Terminal Drainage Systems Oil / Water Separators Loading Rack Layout Considerations

ENGINEERING PRACTICES EP 4-4-11 EP 4-4-12 EP 16-16-1 EP 24-22-10

Tank Field Dike Design Terminal Drainage and Spill Containment Criteria Area Classification and Related Electrical Design Additive System Design Layout

ECI MARKETING OPERATIONS GUIDELINES, VOLUME 2 Section 6 Section 7 Section 8

Yards Buildings & Racks Tankage

OTHER REFERENCES EE Report EE.1M.85 EEEL Report 88.EEEL.0098 NFPA 30 ECI Marketing Engineering Guides

Truck Loading Rack Design Guide for Clean Products, (June 1985). Truck Loading Rack Design Guidelines for ESSO Europe-Africa (June 1988). Flammable and Combustible Liquids Code. Storage Tanks, Section 3.0, Tank Farm Design, (August 1988).

Services,

Inc.,

DEFINITIONS COMBUSTIBLE LIQUID A combustible liquid (also known as “high flash”) is defined by NFPA 30 as a liquid which has a flash point at or above 100°F. CRITICAL AREAS Critical areas, as used herein, include manifolds located on marine piers, high occupancy buildings (such as laboratories, shops, offices), main line railroads, public highways, public waterways and property lines adjacent to land which is developed or could be build upon. DIKE A dike is an earth or concrete wall providing a specified liquid retention capacity. DIVERSION WALL A diversion wall is an earth or concrete wall which directs spills to a safe disposal area.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 3 of 11 Rev. 2

Apr., 1999

DEFINITIONS (continued) FLAMMABLE LIQUID A flammable liquid (also known as “low flash”) is defined by NFPA 30 as a liquid which has a flash point below 100F and a vapor pressure not exceeding 40 psia at 100°F. FLOATING ROOF TANK A floating roof tank is an open top tank containing pontoon, double deck or similar bulkhead design floating roof. FIXED ROOF TANK A fixed roof tank is a tank with a cone roof or similar closed roof. Fixed roof tanks can contain an internal floating cover, e.g., metal cover using pontoons for flotation, non-metallic cover or combination metallic/non-metallic cover. NET DIKE CAPACITY The net dike capacity is the actual retention capacity within the dike. The capacity of the diked area enclosing more than one tank shall be calculated after deducting the tank displacement of the other tanks below the height of the dike, but including the volume occupied by the largest tank. PROPERTY LINES Property lines are the boundaries of Exxon's land to which Exxon has legal title. SPACING Spacing is the horizontal distance between adjacent edges of equipment or boundaries except as follows: spacings to pumps are measured to the stuffing box/seal chamber where fire hazard controls are located or to the pump base where mechanical interference is of concern. TANK DIAMETER Where tank spacing is expressed in terms of tank diameter, the following criteria governs. If tanks are in similar services (type of tank and stock), the diameter of the largest tank is used. If tanks are in different services, or different types of tanks are used, the diameter of the tank which requires the greater spacing is used. TANK SPACING Tank spacing is the unobstructed distance between tank shells, or between tank shells and the nearest edge of adjacent equipment, property lines, buildings or other facilities. TOEWALL Toewall is a low earth, concrete or masonry unit curb without capacity requirements for the retention of small leaks or spills. BACKGROUND A terminal consists of two major components, the tank farm area and the remaining plant yard. The plant yard can be classified into two categories, operating and non-operating. The operating areas of terminal include the truck loading and unloading areas, pump equipment area, warehouse and outside storage and boiler house. The non-operating areas include office areas, employee parking lot, landscaped areas and unused areas reserved for future expansion.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

Page 4 of 11

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Rev. 2

Apr., 1999

BACKGROUND (continued) Maintaining a safe operating distance between these various terminal components and areas is required. The objectives of maintaining this distance are as follows:

•

Provide adequate clearance and accessibility to prevent the spread of fire or damage from heat radiation.

•

Permit access for firefighting and for operators to perform emergency shutdown actions in a fire situation.

•

Minimize involvement of adjacent facilities in a fire and hence prevent further equipment damage.

•

Insure that critical emergency facilities are not subject to fire damage.

•

Segregate high risk facilities or equipment.

•

Separate continuous ignition sources from possible sources of flammable materials.

•

Avoid danger or nuisance to persons or facilities beyond the terminal property lines.

•

Permit access for normal operation and maintenance.

•

Insure site security.

LAYOUT CONSIDERATIONS FOR TERMINALS GENERAL There are several factors that may affect the layout of a terminal and cause deviations in the minimum spacing requirements. Physical limitations of the available plot space, such as existing facilities, roadways or natural boundaries influence the terminal layout. Topography is another major factor in providing safety in the design of facilities on sloped areas. For example, the location of oil water separators depends on sewer drainage, and the possibility of major tank spills gravitating downhill to the operating area(s) must be avoided. Soil conditions are also a concern, especially in the tank farm. Flexibility in land utilization is necessary to reserve space for future expansion. Consideration should also be given to adjacent property that may be developed as residential or public uses (schools, churches, etc.). TRUCK LOADING AREA The truck loading area includes the terminal driveway, loading rack, parking and traffic pattern. The general considerations and requirements for the layout and spacing of this area are summarized below. Smooth traffic flow is essential for a safe and efficient loading terminal operation. Sufficient parking and queuing areas and proper layout contribute greatly to smooth traffic flow. The truck loading area layout is influenced by available plot space and overall terminal layout; slight variations may be necessary according to the actual topography. An example of a good layout for a truck loading facility is shown in Figure 1. Typically, trucks will enter and exit the terminal through the same gate. However, separate entrance and exit gates may be provided to ease traffic congestion. In this case, the gates should be in reasonable proximity to each other for ease of security control. Traffic patterns should, where possible, be in a counterclockwise direction. Traffic patterns should not permit traffic to cross as a part of normal traffic flow.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

Page 5 of 11

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Rev. 2

Apr., 1999

LAYOUT CONSIDERATIONS FOR TERMINALS (continued) A truck parking area is often provided. Its location should allow for easy maneuvering of trucks into and out of normal traffic flow and minimize back-up movements. The parking area size is generally based on the terminal throughput and average anticipated waiting time during peak periods, such as the queue at the start of daily operations. If preloading is planned, a separate parking area for preloaded trucks is provided on the outgoing path for safety and operational reasons. Parking spaces should be large enough to readily permit personnel access between parked trucks. → The service facility (air, fuel, water, pumpoffs, etc.) should be located on one end (dedicated utility lane) of the rack. It should not interfere with normal traffic flow. The loading rack orientation should enable loaded trucks to drive straight to the exit gate. This minimizes wear and tear on the paved surface by limiting turning of the fully loaded trucks upon exit from the rack. It also permits quick emergency evacuation and enables supervisory view of rack operations. Ample space should be provided ahead of all rack positions so that the largest trucks can enter without backing up. Normal entry should be designed for a turning radius 20% greater than the minimum for the largest truck. A queue space at the entrance to the rack provides for sorting prior to entry. All parking and queuing areas and normal traffic flow paths should be permanently and clearly marked. When new facilities are developed, the loading racks should be located in an area large enough to permit future expansion of the facilities and the use of larger trucking equipment. It is recommended that an increase of at least 50% be possible for a typical size loading facility and up to 100% expansion for smaller facilities. If an expansion of the truck loading rack is considered, it should also include expanding both the truck parking and truck waiting areas. → For new facilities, the following distances are required for safe operations from the truck loading rack to:

•

Atmospheric hydrocarbon storage tank

100 ft

•

Firewater pumps

100 ft

•

Office buildings

100 ft

•

Other Buildings

45 ft

•

Boiler House

100 ft

•

Property lines

100 ft

•

Electrical building / transformer / generator

100 ft

•

Major Pumping area

50 ft

NOTE:

See NFPA-30 for the minimum acceptable distances.

BUILDINGS Typical buildings that are found at a terminal include the terminal office, warehouse, laboratories and garage. Considerations concerning the location of several of these buildings in the terminal layout are presented below. As a general spacing requirement, 100 ft of clearance is required to protect personnel from exposure to fires and explosions. Terminal Office: The terminal office contains offices for terminal personnel, conference room, lunch room, etc. It can be a separate building or attached to a large warehouse. It is typically located in the non-operating area of the yard and can reach up to 11,000 square ft.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 6 of 11 Rev. 2

Apr., 1999

LAYOUT CONSIDERATIONS FOR TERMINALS (continued) Warehouse: Warehouses are used for storage. Shipments can be received by either rail, truck or both. If the terminal receives shipments by truck, the warehouse should be positioned so that other activities in the terminal are not disturbed when the truck is parked against the unloading platform. There should be free movement of other vehicles and personnel in the yard. If the terminal is situated along a railroad, the warehouse should be located so that the box cars may be unloaded directly into the building. In larger terminals, the warehouse may handle both rail and vehicular shipments. The rail and road access should be located on different sides of the building. Railroads represent a minimum risk to a warehouse; a 25 ft clearance from the main line serving other parts of the terminal provides protection against collision damage in case of derailment. Rail sidings serving the warehouse do not require any minimum spacing to the warehouse. The location of the warehouse should also allow for future expansion of the building. Laboratories: Laboratories may be connected to the warehouse or terminal office. A 2 hour firewall should separate the two building types. The laboratories may also be free standing buildings. See DP 4-17-1 for laboratory requirements. PARKING LOTS Every terminal has an employee/customer parking area as well as the parking area for trucks (as described in the Truck Loading Area). In the planning of the parking area, factors that must be considered include the following:

•

access.

•

external and internal traffic flows.

•

pedestrian needs.

•

future expansion requirements.

The employee and customer parking area is typically fenced off from the terminal yard and operating area. This forces vehicles to enter and leave by a separate gate to the parking area. The fencing reduces vandalism and protects vehicles. It also defines the overall limits and improves the appearance of the terminal. Entrances to the parking lot are typically 26 ft wide to allow two way flow of traffic and for vehicles to turn into or off a main route. Single lane entrances are at least 14 ft wide at the property lines while the exits are at least 10 ft wide. The entrance and exit should be located far from intersections. If the terminal operates at night, sufficient lighting is required in the parking lot to protect both vehicles and people after dark. DRAINAGE AND WATER TREATMENT The layout, grading and topography of a terminal should help facilitate the segregation of the different wastewater streams such as the oily and clean stormwater runoff. The ideal layout should allow all wastewater streams to gravity flow from the source to its particular treatment or discharge point. All drainage systems should utilize differences in elevation as much as possible. Typically, each terminal has an oil-water separator located near the loading rack. At some terminals, a second separator may be required near the tank farm. In general, the oil water separator should be located at a point in the terminal that is lower relative to the location of the area to be served by the separator, but higher than the water discharge location from the separator. This will allow both the oily-water collection lines and clean water discharge lines to gravity flow to/from the separator. Occasionally, this is not possible based on the topography of the terminal. In this case, the separator should be located so the oily-water collection lines can freely flow into the separator. Pumps are then used to remove the clean water from the separator to secondary treatment or the discharge point.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

Page 7 of 11

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Rev. 2

Apr., 1999

LAYOUT CONSIDERATIONS FOR TERMINALS (continued) PUMP AND MECHANICAL EQUIPMENT AREAS Pumps and other mechanical equipment areas should be located outside of tank diked areas. A minimum clearance of 50 ft is required to other major equipment and property lines to minimize damage in case of fire. BOILER HOUSE In terminals where there is a steam generating or hot oil facility, the minimum spacing should be 100 ft. These facilities represent a minor risk to other facilities. Reduced spacing to the property line is acceptable if the adjoining property has only warehouses, storage buildings or other low risk facilities on it.

DESIGN CONSIDERATIONS AND GUIDELINES FOR THE TANK FARM AREA SITE SELECTION The tank farm location in a terminal is largely dictated by the overriding factors affecting terminal site selection such as distribution area, practical supply access, truck access, zoning laws and available land. However, several features of the tank farm are critical to a safe and efficient terminal and should be considered in the terminal site selection. The subsoil must be, or capable of being made adequate for tank foundations. Adequate room to properly space tanks and provide for expansion is required. The terrain should be relatively level. Excessive grade variations make the design and construction of dikes difficult. Tanks located significantly above the surrounding area pose risks in the event of major leaks or spills. In addition to the above, the following consideration should be applied to selecting the tank farm location within the terminal site. The location should provide reasonable piping runs to and from the tanks, avoid the need for piping to cross heavily traveled roadways, and provide unencumbered access for fire control equipment. The location should also be separated from the major terminal operating areas but provide reasonable surveillance by operating personnel. Above-ground tank piping for any tank or group of tanks enclosed by a dike should not run through other diked areas. However, piping of tankage within a group may cross intermediate toewalls within that group. This qualification does not apply to intermediate dikes of paired tanks. Pumps shall be located outside the diked area, unless a high flash viscous stock requires the pump to be located within the diked area. Other equipment, such as air eliminators, filters and heat exchangers, shall be located outside the diked area. DIKING ARRANGEMENTS AND CAPACITY REQUIREMENTS →

All tanks at the terminal (including additive tanks) should be located together in a common diked area. Tanks are typically segregated by stocks into diked areas when possible. This groups tanks of the same relative risk category (tank type and stock) together. If this cannot be done, e.g., where fixed and floating roof tanks, or flammable and combustible liquids are located in the same diked area, the more stringent of the applicable requirements will govern. Where alternatives or future changes in service are specified ("switch service"), the design requiring the greater dike capacity will govern. In Marketing Terminals, flammable products should be stored in fixed roof tanks with internal floating roofs. Alternatively, they may also be stored in floating roof tanks retrofitted with aluminum geodesic dome covers. These tanks may be grouped as follows:

•

Tankage may be grouped within a single dike, provided the combined capacity does not exceed 300,000 barrels. Each tank with a capacity of 50,000 barrels or greater, or group of tanks with a capacity not exceeding 50,000 barrels, should be separated from other tanks in the same group by a toewall.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 8 of 11 Rev. 2

Apr., 1999

DESIGN CONSIDERATIONS AND GUIDELINES FOR THE TANK FARM AREA (continued)

•

Two tanks with a combined capacity exceeding 300,000 barrels, regardless of individual capacity, may be paired within a single dike. An intermediate dike should be provided between the paired tanks.

•

The pairing principle for arranging the storage of flammable liquids in floating roof tanks may be extended to include a total of three tanks, but only in the case of an odd number of tanks. For example, nine tanks may be arranged in three groups of two tanks each plus one group of three, but not three groups of three tanks. The tanks should be separated by intermediate dikes.

•

Single tanks which cannot be grouped or paired shall be enclosed by individual dikes.

Any number of tanks containing combustible liquids, regardless of total capacity, may be grouped within a single dike or toewall. The net capacities of the dikes for flammable liquids and combustible liquids, shall be at least 110% of the greatest amount of liquid that can be released from the largest tank within the diked area, assuming a full tank and allowing for the displacement of all other tanks. DIKE REQUIREMENTS The primary purpose of dikes around above ground petroleum storage tanks is to contain spilled liquid, preventing the spread of fire in an emergency condition. For this reason, dikes have been referred to as "firewalls". An equally important purpose of dikes is the prevention of pollution. For this reason a broader and more appropriate term is often given, "impoundment dikes". Existing terminals are governed by NFPA 30, Tankage. For new terminals, diking around tanks shall comply with the following and the NFPA Section 30:

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The minimum height of dikes, measured from within the dike, shall be 1 ft for concrete dikes, and 18 in. plus any required freeboard for earth dikes. The freeboard allowance shall be at least 8 in. Additional freeboard may be required for soil consolidation.

•

The required dike capacity is normally provided with dikes at a maximum height of 6 ft, as measured from the outside of the dike on the side adjacent to the road or accessway. This height does not include freeboard. When tanks are located on sloping terrain, portions of the dike may exceed these specified limits except for the side adjacent to the road or accessway. However, where layout, or soil conditions require dikes higher than 6 ft, the requirement and dike design shall be approved by the Owner's Engineer.

•

The height of intermediate dikes between paired tanks shall be 1 ft less than the height of the peripheral dike. Both measurements include freeboard.

•

The minimum height of toewalls shall be 18 in. (excluding freeboard) if of earth construction, and 1 ft if constructed of concrete or masonry.

•

Earth dikes shall be used, except where space limitations require the use of concrete. Proposals to provide concrete dikes over 6 ft high, shall be approved by the Owner's Engineer.

•

All dikes, diversion walls and toewalls shall be suitable for the static hydraulic and temperature conditions which may be encountered, and shall be liquid tight.

•

To permit access to the diked areas, the outside base of the dike at ground level shall be no closer than 10 ft to any property line that is or can be built upon.

•

At least one stairway shall be provided over earth and concrete dikes. However, for earth dikes over 6 ft high and concrete dikes 3 ft or higher, a minimum of two stairways shall be provided. When two stairways are provided, they shall be on opposite sides of the dike enclosure. At least one of the stairways should be located as close as possible to a fire hydrant.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Page 9 of 11 Rev. 2

Apr., 1999

DESIGN CONSIDERATIONS AND GUIDELINES FOR THE TANK FARM AREA (continued) DRAINAGE FOR DIKED OR TOEWALL ENCLOSURES Where rain water is not permitted to percolate through the bottom of the enclosure, a drain system shall be installed to provide for rain run-off. The drain systems shall be a sealed catch basin or sump within the diked enclosure, discharging to an outer sump or directly to the sewer system. The drainage system shall be provided with a gate valve or shear gate located in an accessible position outside the dike. Grading of diked or toewall enclosures shall direct the liquid from a leak in the tank or piping to an area within the enclosure that is remote from the vessels and piping. Where the terrain slope from tankage containing combustible or flammable liquids is towards critical areas, means shall be provided to prevent dike overflow from reaching these areas. Preferentially, this shall be accomplished by installing curbs, diversion ditches or dikes or by regrading the terrain. Increasing the dike height to contain the capacity of the largest tank is also acceptable. Diversion walls and sloping of the ground away from vessels to a remotely located retention basin is permitted, when approved by the Owner's Engineer. LOCATION, LAYOUT AND SPACING OF TANKS →

All of the terminal tanks should be located inside the tankfield diked area. Proposals to locate any tankage (for instance, additive tanks) outside of the general tankfield shall require review and approval by the Technical Support Group. Furthermore, said tanks shall meet the diking requirements previously mentioned, as well as the minimum spacing distances outlined below. Tanks containing flammable liquids shall be located in areas remote from property lines and other areas of high occupancy. These tanks are arranged in rows not more than two deep. Every tank shall be adjacent to a road or accessway. Tanks for combustible liquids shall be arranged in rows not more than three deep. None of the tanks shall be more than one row away from a road or accessway. The minimum spacing from atmospheric tanks containing combustible or flammable liquids to property lines, boundaries, or other facilities for new terminals (or new equipment installations at existing terminals) shall be as follows:

•

High and low flash tank truck loading rack

100 ft

•

Tank car loading rack

100 ft

→

•

Low flash unloading positions

100 ft

→

•

High flash unloading positions

45 ft

•

Firewater pumps

200 ft

•

Office buildings

100 ft

•

Other buildings

45 ft

•

Boiler house

100 ft

•

Property lines

100 ft

•

Other tanks

1/4 sum of diameters

→

NOTE:

Refer to ER&E Design Practices, Section XV, Sub Section G, Table 2, for any other items not listed above.

Exxon Company, U.S.A.

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

FIGURE 1 TYPICAL TRUCK LOADING RACK AREA LAYOUT →

Exxon Company, U.S.A.

Page 10 of 11 Rev. 2

Apr., 1999

DP 22-22-10 Exxon Company, U.S.A. Marketing Distribution DESIGN PRACTICES

Page 11 of 11

TERMINAL LAYOUT AND SPACING PROPRIETARY INFORMATION - For Authorized Company Use Only

Rev. 2

REVISION HISTORY Date 1/94 1/95 4/99

Revision 0 1 2

Description Issued as DP 22-22-10. Issued as DP 22-22-10, with minor changes to Revision 0, dated 1/94. Issued as DP 22-22-10, with minor changes to Revision 1, dated 1/95.

Exxon Company, U.S.A.

Apr., 1999