The purchase of tangible personal property for incorporation or fabrication into any real property, structure, project, development or improvement under a contract specified in A.R.S. § 42-5075(B)(6) is exempt from tax. The purchase of tangible personal property used in soil remediation activities but not incorporated or fabricated into any real property, structure, project, development or improvement is taxable.
Ariz. Admin. Code § R15-5-2340