Environmental Services in Pima County, AZ

Yes. Low rainfall limits surface staining and biological indicators that often signal releases in humid climates, so visual reconnaissance in the Sonoran Desert environment places greater emphasis on soil discoloration, stressed or anomalous vegetation patterns, and historical aerial photo review. The ASTM E1527-21 standard governing Phase I ESAs requires the environmental professional to apply appropriate professional judgment to regional conditions regardless of climate.

The Arizona Department of Environmental Quality administers the Voluntary Remediation Program and oversees regulated releases under state statute. Phase II findings with confirmed impacts typically require ADEQ notification or enrollment depending on contaminant type and concentration. We structure Phase II work product to align with ADEQ reporting expectations so documentation is usable if regulatory engagement becomes necessary rather than requiring reformatting later.

Sites with unknown fill warrant at minimum a review of historical records and, where history is unclear, field screening of soils during excavation using a photoionization detector for volatile organics alongside visual logging. If analytical confirmation is needed, soil samples are collected and submitted to our laboratory, which operates under a documented quality system. Findings inform spoils management decisions and help avoid costly holds once grading is underway.

Field work in Pima County is dispatched through the Phoenix, AZ regional hub, about 106 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Pima County projects.

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