How Much Does A Phase 1 Environmental Assessment Cost?Answer: Cost for a Phase 1 Environmental Site Assessment will typically be $1,600-$1,900. This Phase 1 would meet ASTM E1527-13, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process. Costs may increase for larger properties, sites with past spills or leaking tanks where an agency file review is needed, and more remote locations.
As an alternative for larger rural properties, a different standard practice might be considered. Caltha uses ASTM E 2247 for these properties(ASTM E2247-08, Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process for Forestland or Rural Property).
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