Ariz. Admin. Code § 18-9-B203

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-9-B203 - Engineering Plans and Specifications

A. A person applying for an individual permit for a sewage treatment facility with a design flow under one million gallons per day, shall submit engineering plans and specifications to the Department. The Director may waive this requirement if the Director previously approved engineering plans and specifications submitted by the same owner or operator for a sewage treatment facility with a design flow of more than one million gallons per day.

B. A person applying for an individual permit for a sewage treatment facility with a design flow of one million gallons per day or greater shall submit engineering plans and specifications if, upon review of the design report required in R18-9-B202, the Department finds that:

1. The design report fails to provide sufficient detail to determine adequacy of the proposed sewage treatment facility design;

2. The described design is innovative and does not reflect treatment technologies generally accepted within the industry;

3. The Department's calculations of removal efficiencies based on the design report show that the treatment facility cannot achieve treatment performance requirements;

4. The design report does not demonstrate:

a. Protection from physical damage due to a 100-year flood,

b. Ability to continuously operate during a 25-year flood, or

c. Provision for a standby power source;

5. The design report shows inconsistency in sizing or compatibility between two or more unit process components of the sewage treatment facility;

6. The designer of the facility has:

a. Designed a sewage treatment facility of at least a similar size on less than three previous occasions,

b. Designed a sewage treatment facility that has been the subject of a Director enforcement action due to the facility design, or

c. Been found by the Board of Technical Registration to have violated a provision in A.R.S. Title 32, Chapter 1;

7. The permittee seeks to expand its sewage treatment facility and the Department believes that the facility will require upgrades to the design not described and evaluated in the design report to meet the treatment performance requirements; or

8. The construction does not conform to the design report if the sewage treatment facility has already been constructed.

C. The Department shall review engineering plans and specifications upon request by an applicant seeking a permit for a sewage treatment facility, regardless of its flow.

D. The Department may inspect an applicant's facility without notice to ensure that construction generally conforms to engineering plans and specifications, as applicable.

E. Before discharging under a permit, the permittee shall submit an Engineer's Certificate of Completion signed, dated, and sealed by an Arizona-registered professional engineer in a format approved by the Department, that confirms that the facility is constructed according to the Department-approved design report or plans and specifications, as applicable.

Ariz. Admin. Code § R18-9-B203

New Section adopted by final rulemaking at 7 A.A.R. 235, effective January 1, 2001 (Supp. 00-4). Amended by final rulemaking at 11 A.A.R. 4544, effective November 12, 2005 (05-3).