Looking for a Phase I ESA in Dewey-Humboldt, AZ? Describe your project once and up to three environmental consultants who work in Dewey-Humboldt and Yavapai County get back to you with a quote. It's free and there is no obligation.
Dewey-Humboldt is home to about 4,589 people (2024 Census Bureau estimate), a growing community (+6.0% since 2020). With 244 people per sq mi, it is a semi-rural area. Commercial sales and loans here routinely require a Phase I, especially for former industrial, gas station and dry cleaning sites.
Dewey-Humboldt at a glance
- Population (Census Bureau estimate, 2024)
- 4,589 (+6.0% since 2020)
- Rank in Arizona
- 61st of 91 cities and towns
- Land area
- 19 sq mi
- Population density
- 244 people per sq mi (semi-rural)
- Type
- Town (Dewey-Humboldt town)
- Main county
- Yavapai County
What to check before hiring in Dewey-Humboldt
- Qualifications: the report is signed by an Environmental Professional under the EPA All Appropriate Inquiries rule; some states also license environmental consultants.
- Lender requirements: check whether your lender has its own scope or reliance letter requirements.
- Timing: order early: records requests and the site visit take time.
- Price drivers: property size and history, number of buildings and turnaround.
Useful official resources
-
EPA: brownfields
All Appropriate Inquiries and brownfields programs.
-
ASTM International
Publisher of the E1527 standard.
Services available in Dewey-Humboldt
-
Phase I Environmental Site Assessment
Records review, site visit and interviews to ASTM E1527 by an Environmental Professional, for a purchase or a loan.
-
Phase II Environmental Site Assessment
Soil, groundwater or vapor sampling when a Phase I identifies a recognized environmental condition.
Frequently asked questions in Dewey-Humboldt
How much does a Phase I ESA cost in Dewey-Humboldt, AZ?
It depends on the size and history of the property and the turnaround. Describe the property: consultants who serve Dewey-Humboldt send a proposal.
How long does it take?
Often two to three weeks; rush service is usually available.
What if the Phase I finds something?
A Phase II may be recommended to sample soil or groundwater and assess the extent.
Which environmental consultants will contact me?
Up to three independent environmental consultants who serve Dewey-Humboldt and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.