Ssl Site Screening
Evaluation







Are volatile CERCLA-hazardous substances,
pollutants or contaminants documented or
suspected to be present in indoor air or in the
subsurface at a depth of ^ 100' bgs (e.g., in
groundwater, subsurface soil, soil gas, or air samples
collected in a crawl space)?

T

YES

Is the approximate extent of the subsurface
contamination known/delineated?



YES



Are there regularly occl
near the subsurface con

pied structures overlying or
tamination?

YES

Is there evidence of vapor intrusion/groundwater
intrusion from the subsurface occurring in overlying
or nearby regularly occupied structures (e.g.,
documented presence in indoor samples)?

YES

Ssl is likely a concern at this site. Consider further
evaluation of the potential Ssl threat at this site.

HRS Implementation Guidelines* ^

Ssl EDITION

*This document serves as guidelines for employees of the U.S. Environmental Protection Agency
(EPA), states and other government agencies and does not constitute EPA rulemaking or policy.
EPA officials may decide to follow these, or to act at variance with them, based on site-specific
circumstances.

vvEPA

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