Environmental Services in Aurora, CO

ASTM E1527-21 is the baseline standard recognized for All Appropriate Inquiries under federal CERCLA. Colorado CDPHE maintains its own voluntary cleanup and risk-based corrective action programs; if your site has known releases, state-specific reporting thresholds and cleanup standards may apply on top of the federal framework. We flag these intersections in the report so your counsel and lender can address them directly.

Frozen or near-frozen ground can complicate shallow soil sampling and may require alternative sampling equipment or scheduling adjustments. Ground freezing on the Front Range typically begins in November and can persist into March at depth. We account for seasonal conditions when planning field mobilizations and will note any sampling limitations in the report documentation consistent with ASTM E1903-19 reporting expectations for Phase II work.

A thorough historical records review — aerial photographs, fire insurance maps, city directory research, and regulatory database searches — is the backbone of ASTM E1527-21 Phase I practice. For properties with dense or unclear ownership histories, we extend the research depth and document the reasoning. Any data gaps that could affect conclusions are explicitly identified in the report rather than left unaddressed.

Field work in Aurora is dispatched through the Denver, CO regional hub, about 9 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Aurora projects.

Field sampling and testing in Aurora are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in Colorado, coordinated under one proposal.