PUBLIC NOTICE: City of Mesa Southeast WRP draft AZPDES permit (AZ0025151)

PROPOSED ARIZONA POLLUTANT DISCHARGE ELIMINATION SYSTEM (AZPDES)

PERMIT MODIFICATION

 

Pursuant to the Clean Water Act and in accordance with Arizona Administrative Code (A.A.C.) R18-9-A907, the Director of the Arizona Department of Environmental Quality (ADEQ) proposes to issue an Arizona Pollutant Discharge Elimination System (AZPDES) Permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:

 

Public Notice No. 16-99                                              Published on November 3, 2016

                                                                                Published in the Arizona Business Gazette

 

AZPDES Permit No. AZ0025151

City of Mesa

P.O. Box 1466

Mesa, AZ 85211-1466

 

The City of Mesa operates the Southeast Water Reclamation Plant (SEWRP) for the treatment and disposal of domestic wastewater. On September 12, 2016, ADEQ received a request from the permittee to modify the AZPDES permit, which became effective on March 18, 2015. The permit authorizes the discharge of up to 8 million gallons per day (mgd) of treated domestic wastewater from the SEWRP to the East Maricopa Floodway, tributary to the Gila River in the Middle Gila River Basin in Township 1 S, Range 6 E, Section 12, in Maricopa County, Arizona. The modification request is to reduce the sampling frequency for chromium (total), chromium VI, copper, cyanide, iron, hydrogen sulfide, selenium and sulfides from monthly to quarterly. Additional data was provided for the parameters for review. An assessment of the data indicates no reasonable potential for an exceedance of the standard exists for chromium (total), chromium VI, iron, selenium, hydrogen sulfide and sulfides. Therefore, those parameters only require effluent characterization sampling quarterly. However, since the data indicates a reasonable potential for an exceedance of the standard exists, limits remain in the permit for copper and cyanide and sampling is required monthly.

 

The permit and fact sheet may be viewed online at http://www.azdeq.gov/notices by typing the permit number in the “Keywords” search box. The public notice and related documentation also are available for public review, Monday through Friday, 8:30 a.m. to 4:30 p.m., at the ADEQ Records Center, 1110 W. Washington St., Phoenix, Arizona, 85007. In Phoenix, please call (602) 771-4380 or e-mail recordscenter@azdeq.gov 24 hours in advance to schedule an appointment to review the file.

 

Persons may submit comments or request a public hearing on the proposed action in writing, to Jacqueline Maye, Arizona Department of Environmental Quality, Water Quality Division, 1110 W. Washington St., Phoenix, Arizona 85007, or electronically to jpm@azdeq.gov. All written comments received by ADEQ by the close of business on the date 30 days after publication of this notice will be considered in the final permit decision. A public hearing request must be in writing and must include the reasons for such request. If there is a significant degree of public interest, the Director will hold a hearing in accordance with A.A.C. R18-9-A908(B).