REV
ISED AUGUST 2
01
9
DO NOT ALTER APPLICATION
Maricopa County
Environmental Services
Subdivision Infrastructure and Planning Program
Approval Of Construction (AOC)
Application Packet
• Approval OF Constructions (AOCs) are applied for after the component is built and testing has been completed and
passed.
• MCESD issues AOCs only for MCESD issued Approvals To Construct (ATC).
• One (1) MCESD number per AOC application. Do not put multiple numbers on one application. ATCs are
issued with one MCESD number and AOCs are issued the same way.
• For the Engineer’s Certificate of Completion area on the application, the only items required are registered
engineer’s name, phone & e-mail and the wet seal and signature. Nothing else is to be added.
• The engineer sealing/signing must be comfortable with the information provided on the as-built plans.
• Please make sure that the application is completed legibly. MCESD signs the bottom of the application when
issued, which turns it into the issued certificate.
• ONLY Private Sewer Systems and Private Lift Stations need to have Operations and Maintenance Manuals.
Provide engineer verification of completed requirements on last page of AOC application.
AOC Application Instructions
PWS# - “Public Water Supply” number – last three digits needed. Needs to be the assigned number that is providing potable water, must be the
same on the ATC and the AOC.
MCESD# - located on the plans that were signed by MCESD and can be found on the Approval to Construct Certificate.
(One MCESD number per application)
Type of Component – write in the type of component the AOC application is for, water, sewer, etc.
DWR# - last six digits needed. FOR WELLS ONLY. Must have unexpired source approval before applying for AOC.
Project Name – as denoted on the Approval to Construct Certificate. Should be the same as on the plans.
Project Address – physical location of project.
Project Description – the description should be the same as the description on the Approval to Construct (ATC) Certificate, this will be different
for each component.
Project Owner – must be a person with fiduciary responsibilities associated with the Project.(Print Name) *
Job Title – examples: Owner, President or Vice President of Corporation/Home Owner Association, Manager.
Project Company Name – the name of Company who owns the Project.
Mailing Address, City, State, Zip Code – location of project owner.
Signature of Project Owner – No one other than named / listed project owner can sign the application unless there is a letter of authorization
attached.
Engineer’s Certificate of Completion – must be filled out, sealed and signed by a registered Engineer only, do NOT alter the application in any
way.
O & M Verification Page For Private Sewer Systems – Regarding Operations and Maintenance Manual verification. MUST be completed if
the AOC is for a private sewer and/or private lift station.