EP 1110-1-18
24 Apr 00
Identify any environmental or legal considerations that are important to the implementation
of institutional controls.
G-3. Justification.
Provide justification for institutional or engineering controls at the area(s) addressed in the ESS.
This justification should include the following:
a. The amounts and types of OE found during the site investigation. Present a brief synopsis of
the results of the surface and intrusive investigations. This discussion should be supported by
a table which shows: the amount of OE; type of OE; and the depths of OE found in each area
investigated.
b. A summary of the risk analysis performed on the area(s) addressed in the ESS.
c. A summary of the cost- benefit analysis, if performed.
d. Provide a summary for the rationale for the selection of institutional or engineering controls
as the most appropriate action, based on the amount, type and depth of OE found, the risk
analysis, and (if available) the cost-benefit analysis.
G-4. Start Date.
Not applicable.
G-5. Migration of OE.
If the existing amounts, types and depths of OE is expected to increase due to migration, describe
what impact this will have on the level of risk at the site in the future. If the level of risk is
expected to escalate back to the unacceptable level, describe what the plans are to address this
escalation. Principle migration mechanisms are discussed below:
a. Frostline. State the depth of the frostline at the site. Where OE is above the frostline but is
currently deep enough to be an acceptable risk with the chosen controls, but may migrate
upward and cause trouble in the future, describe what provisions will be made for continued
surveillance of the area.
b. If the area(s) encompass water bodies, then provide a discussion on the impact of wave
action, tides, currents, storms, etc, on any potential OE migration.
c. If the area lies in a watershed such that runoff and erosion can carry OE from upstream into
the area, address this concern.
G-6. Clearance Techniques.
Not applicable.
G-2
Previous Page
