Notional Field Development Final Report - EBN

EBN Notional Field Development Plan
In order to keep sediment and other liquid pollutants (oils, chemicals) out of surface waters, establishing
a perimeter to prevent fluid and sediment migration, and providing containment pads, liners, barriers
and covered storage units is essential.
4.7.8 Stormwater Management Plans
The management of stormwater associated with a rainfall event is a critical component of any pollution
prevention program. The objective of stormwater management is to prevent or mitigate the adverse
impacts related to the conveyance of excessive rates and volumes of stormwater runoff.
The effectiveness of a given stormwater management program is a function of comprehensive planning
and sound engineering design. The intent is to develop a plan which facilitates natural runoff flow
characteristics either by augmenting the infiltration process or by temporarily storing stormwater for
release at controlled rates of discharge. This can be accomplished by implementing stormwater
management techniques which are either structural (detention ponds, pipes, etc.) or nonstructural
(land-use planning to effectively preserve existing vegetation, drainage swales, perviousness, etc.). Both
techniques should be utilized as complementary elements of a management plan.
Figure 4-74. Typical retention basin used for stormwater management
Stormwater plans should include:
• A survey of existing runoff characteristics in small as well as large storms, including the impact of
soils, slopes, vegetation and existing development;
• A survey of existing significant obstructions and their potential impacts;
• An assessment of projected development at the site and the potential impact of runoff quantity,
velocity and quality;
• An analysis of projected development in the flood hazard areas, and its sensitivity to damages
from future flooding or increased runoff;
• Survey of existing drainage problems;
© 2011 Halliburton All Rights Reserved
230