1993-07-14_PERMIT FILE - C1981017

• Permit No: C1981017
• IBM Index Class Name: Permit File
• Doc Date: 7/14/1993
• Doc Name: Phase I Environmental Site Assessment of the Pitkin Iron Limestone Division property Crbondale, Co
• Media Type: D
• Archive: No

2. 0 PURPOSE AND SCOPE OF THIS WORK
2 .1 PURPOSE
The purpose of this assessment was to determine if environmental
concerns exist at the site which could affect the value of the
property. It is understood that the State of Colorado will use
the findings of this assessment to make decisions regarding the
disposition of this property.
2 .2 APPROACH
The growing body of federal, state and local regulations imposing
environmental liability on property owners for cleanup of
contaminated real estate has created a need for pre-acquisition
or pre-sale environmental site assessments. However, despite the
regulation driven need for such work, these assessments are not
standardized, nor are qualifications for practitioners
established by certification or professional standards.
Despite this lack of structure, certain components of study are
common to site assessments and have, thus, become de facto
standards for performance. The following two-phased approach to
conducting environmental site assessments is one such de facto
standard that is generally employed:
Phase I is a "screening" assessment intended to
determine if the site under consideration includes, or
may include, environmental concerns which affect the
worth of the property, and to establish if there is
reason to perform more detailed evaluations.
Characteristically, a Phase I assessment includes a
review of a site's permit and enforcement history (by
review of regulatory agency records) , a physical
survey, site interviews and site history evaluations,
and qualitative evaluation of the risk to human health
and the environment of any areas of identified concern.
Phase II typically is a "verification" phase, in which
areas of environmental concern identified in a Phase I
assessment are given more detailed evaluation,
characteristically including sampling of soils, ground
water, and structures, followed by laboratory analyses
of these samples.
While little regulatory guidance exists regarding standards for
the completion of environmental site assessments, the Association
of Ground Water Scientists and Engineers (AGWSE) has prepared a
guidance document, which has received accolades from over 600
member scientists and engineers (reference, "Guidance to
Environmental Site Assessments, National Ground Water Association
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