Ariz. Admin. Code § 18-9-B202

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

Section R18-9-B202 - Design Report

A. A person applying for an individual permit shall submit a design report signed, dated, and sealed by an Arizona-registered professional engineer. The design report shall include the following information:

1. Wastewater characterization, including quantity, quality, seasonality, and impact of increased flows as the facility reaches design flow;

2. The proposed method of disposal, including solids management;

3. A description of the treatment unit processes and containment structures, including diagrams and calculations that demonstrate that the design meets BADCT requirements and will achieve treatment levels specified in R18-9-B204 through R18-9-B206, as applicable, for all flow conditions indicated in subsection (A)(9). If soil aquifer treatment or other aspects of site conditions are used to meet BADCT requirements, the applicant shall document performance of the site in the design report or the hydrogeologic report;

4. A description of planned normal operation;

5. A description of key maintenance activities and a description of contingency and emergency operation for the facility;

6. A description of construction management controls;

7. A description of the facility startup plan, including pre-operational testing, expected treated wastewater characteristics and monitoring requirements during startup, expected time-frame for meeting performance requirements specified in R18-9-B204, and any other special startup condition that may merit consideration in the individual permit;

8. A site diagram depicting compliance with the setback requirements established in R18-9-B201(I) for the facility at design flow, and for each phase if the applicant proposes expansion of the facility in phases;

9. The following flow information in gallons per day for the proposed sewage treatment facility. If the application proposes expansion of the facility in phases, the following flow information for each phase:

a. The design flow of the sewage treatment facility. The design flow is the average daily flow over a calendar year calculated as the sum of all influent flows to the facility based on Table 1, Unit Design Flows, unless a different basis for determining influent flows is approved by the Department;

b. The maximum day. The maximum day is the greatest daily total flow that occurs over a 24-hour period within an annual cycle of flow variations;

c. The maximum month. The maximum month is the average daily flow of the month with the greatest total flow within the annual cycle of flow variations;

d. The peak hour. The peak hour is the greatest total flow during one hour, expressed in gallons per day, within the annual cycle of flow variations;

e. The minimum day. The minimum day is the least daily total flow that occurs over a 24-hour period within the annual cycle of flow variations;

f. The minimum month. The minimum month is the average daily flow of the month with the least total flow within the annual cycle of flow variations; and

g. The minimum hour. The minimum hour is the least total flow during one hour, expressed in gallons per day, within the annual cycle of flow variations; and

10. Specifications for pipe, standby power source, and water and sewer line separation.

B. The Department may inspect an applicant's facility without notice to ensure that construction conforms to the design report.

Ariz. Admin. Code § R18-9-B202

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).