1. a piping and instrumentation diagram, and a tank diagram including the location of pumps, valves, vents and lines; the number, and oil capacity of each pipeline covered under the risk analysis and its age, design, known design defects, construction and general condition; the range of oil products normally shipped in the pipeline; the nature and characteristics of the product the pipeline is transporting; physical support of the pipeline segment, such as by a cable suspension bridge; operating conditions of the pipeline; the hydraulic gradient of the pipeline; the presence or absence of containment structures; the capacity of the pipeline; the diameter of the pipeline, material and manufacturing information and seem type, the potential release volume, and the distance between the isolation points.

2. vicinity maps showing any vehicular or rail crossings along the pipeline, nearby residential, commercial, or other populated areas;

3. seasonal hydrographic and climatic conditions;

4. physical geographic features, including type of soil and terrain; drainage systems such as small streams and other smaller waterways that could serves as a conduit to an environmentally and ecologically sensitive area; roadway crossings and ditches; potential natural forces inherent in the area; natural and manmade barriers; potential physical pathways between the pipeline and environmentally and ecologically sensitive areas; and any other physical feature or peculiarity of local geography that call for special precautionary measures that may affect environmentally and ecologically sensitive areas.

1. For on-shore pipelines, the reasonable worst case discharge is the largest volume in barrels of the following:

2. For off-shore pipelines, the reasonable worst case discharge is the largest volume in barrels of the following calculation:

1. proximity to water crossings;

2. variations in topography near the pipeline;

3. variations in distance between the pipeline and the environmentally and ecologically sensitive area;

4. adequate choice of release locations;

5. failure type or size (e.g. catastrophic failure);

6. operating conditions (e.g., flow rate, operating pressure);

7. leak detection and response time;

8. calculations of drain down following leak or rupture;

9. release rates, if air dispersion is possible in the operator's system, product's behavior, air dispersion mechanisms, and ignition must be considered;

10. pipeline system design factors (e.g., pipe diameter, distance between isolation valves, location of tanks and other facilities); and

11. existing leak detection systems, automatic shutoff systems, remote controlled sectionalized block valves, computational pipeline monitoring, and emergency flow restriction devices.

1. waterway conditions;

2. flow characteristics;

3. water properties and water transport consequences;

4. changes in commodity properties due to interaction with the environment;

5. commodity solubility; and

6. abnormal stream conditions such as flood or storm conditions.