3-D APP.pdf

www.azdeq.gov

PERMIT

STATE OF ARIZONA

AQUIFER PROTECTION PERMIT NO. P-102503

PLACE ID 4767, LTF 81153

SIGNIFICANT AMENDMENT

1.0 AUTHORIZATION

In compliance with the provisions of Arizona Revised Statutes (A.R.S.) Title 49, Chapter 2, Articles 1, 2, and 3, Arizona Administrative Code (A.A.C.) Title 18, Chapter 9, Articles 1 and 2, A.A.C. Title 18, Chapter 11, Article 4 and amendments thereto, and the conditions set forth in this permit, the Arizona Department of Environmental Quality (ADEQ) hereby authorizes the Town of Prescott (Town) to operate the Prescott Valley Wastewater Treatment Plant located at 11000 East Treatment Plant Drive in Prescott Valley, in Yavapai County, Arizona, over groundwater of the Prescott Active Management Area in Township 14 N, Range 1 E, Section 16, N½, SW¼, SW¼, SW¼, and S½, NW¼, SW¼, SW¼, and Section 17, N½, SE¼, SE¼, SE¼, and S½, NE¼, SE¼, SE¼, of the Gila and Salt River Baseline and Meridian.

This permit becomes effective on the date of the Water Quality Division Director’s signature and shall be valid for the life of the facility (operational, closure, and post-closure periods) unless suspended or revoked pursuant to A.A.C.

R18-9-A213. The permittee shall construct, operate and maintain the permitted facilities:

1. Following all the conditions of this permit including the design and operational information documented or referenced below, and

2. Such that Aquifer Water Quality Standards (AWQS) are not violated at the applicable point(s) of compliance (POC) set forth below or if an AWQS for a pollutant has been exceeded in an aquifer at the time of permit issuance, that no additional degradation of the aquifer relative to that pollutant and as determined at the applicable POC occurs as a result of the discharge from the facility.

1.1. PERMITTEE INFORMATION

Facility Name: Prescott Valley Wastewater Treatment Plant Facility Address: 11000 East Treatment Plant Drive

Prescott Valley, Arizona 86314 County: Yavapai Permitted Flow Rate: 3.75 million gallons per day (mgd) Permittee: Town of Prescott Valley Permittee Address: 7501 East Skoog Blvd

Prescott Valley, Arizona 86314 Facility Contact: Neil Wadsworth, Utilities Director Emergency Phone No.: (928) 759-3078 Latitude/Longitude: 34° 35' 18" N/112° 16' 24" W Legal Description: Township 14 N, Range 1 E, Section 16, N½, SW¼, SW¼, SW¼, and S½, NW¼, SW¼, SW¼, and Section 17, N½, SE¼, SE¼, SE¼, and S½, NE¼, SE¼, SE¼, of the Gila and Salt River Baseline and Meridian

1.2. AUTHORIZING SIGNATURE

Randall Matas, Deputy Director

Water Quality Division

Arizona Department of Environmental Quality

Signed this _______ day of _________________, 2021

THIS AMENDED PERMIT SUPERCEDES ALL PREVIOUS PERMITS

May18 https://azadoagov.na1.echosign.com/verifier?tx=CBJCHBCAABAAyacFTMmqibZl0WcmaB1Fu2y8cPBQnJNf

PERMIT NO. P-102503

TABLE OF CONTENTS

1.0 AUTHORIZATION

1.1. PERMITTEE INFORMATION

1.2. AUTHORIZING SIGNATURE

2.0 SPECIFIC CONDITIONS

2.1. FACILITY / SITE DESCRIPTION

2.1.1. Annual Registration Fee

2.1.2. Financial Capability

2.2. BEST AVAILABLE DEMONSTRATED CONTROL TECHNOLOGY (BADCT)

2.2.1. Engineering Design

2.2.2. Site-Specific Characteristics

2.2.3. Pre-Operational Requirements

2.2.4. Operational Requirements

2.2.5. Reclaimed Water Classification

2.2.6. Certified Areawide Water Quality Management Plan Conformance

2.3. DISCHARGE LIMITATIONS

2.4. POINT OF COMPLIANCE (POC)

2.5. MONITORING REQUIREMENTS

2.5.1. Pre-Operational Monitoring

2.5.2. Routine Discharge Monitoring

2.5.3. Reclaimed Water Monitoring

2.5.4. Facility / Operational Monitoring

2.5.5. Groundwater Monitoring and Sampling Protocols

2.5.5.1. POC Well Replacement

2.5.6. Surface Water Monitoring and Sampling Protocols

2.5.7. Analytical Methodology

2.5.8. Installation and Maintenance of Monitoring Equipment

2.6. CONTINGENCY PLAN REQUIREMENTS

2.6.1. General Contingency Plan Requirements

2.6.2. Exceeding of Alert Levels and Performance Levels

2.6.2.1. Exceeding Of Performance Levels Set For Operational Conditions

2.6.2.2. Exceeding of Alert Levels (ALs) Set for Discharge Monitoring

2.6.2.2.1. Exceeding Permit Flow Limit

2.6.2.3. Exceeding of Alert Levels in Groundwater Monitoring

2.6.2.3.1. Alert Levels For Indicator Parameters

2.6.2.3.2. Alert Levels for Pollutants with Numeric Aquifer Water Quality Standards

2.6.2.3.3. Alert Levels to Protect Downgradient Users from Pollutants without Numeric Aquifer Water Quality

Standards

2.6.2.3.4. Alert Level For Groundwater Level

2.6.2.3.5. Alert Level for Fecal Coliform in Groundwater

2.6.3. Discharge Limit Violation

2.6.4. Aquifer Quality Limit Violation

2.6.5. Emergency Response and Contingency Requirements for Unauthorized Discharges

2.6.5.1. Duty To Respond

2.6.5.2. Discharge of Hazardous Substances or Toxic Pollutants

2.6.5.3. Discharge of Non-Hazardous Materials

2.6.5.4. Reporting Requirements

2.6.6. Corrective Actions

2.7. REPORTING AND RECORDKEEPING REQUIREMENTS

2.7.1. Self-Monitoring Report Form

2.7.2. Operation Inspection / Log Book Recordkeeping

2.7.3. Permit Violation and Alert Level Status Reporting

2.7.4. Operational, Other or Miscellaneous Reporting

2.7.5. Reporting Location

2.7.6. Reporting Deadline

2.7.7. Changes To Facility Information In Section 1.0

2.8. TEMPORARY CESSATION

2.9. CLOSURE

2.9.1. Closure Plan

2.9.2. Closure Completion

2.10. POST-CLOSURE

2.10.1. Post-Closure Plan

2.10.2. Post-Closure Completion

3.0 COMPLIANCE SCHEDULE

4.0 TABLES OF MONITORING REQUIREMENTS

4.1. PRE-OPERATIONAL MONITORING (OR CONSTRUCTION REQUIREMENTS)

4.2. COMPLIANCE OR OPERATIONAL MONITORING

5.0 REFERENCES AND PERTINENT INFORMATION

6.0 NOTIFICATION PROVISIONS

6.1. ANNUAL REGISTRATION FEES

6.2. DUTY TO COMPLY

6.3. DUTY TO PROVIDE INFORMATION

6.4. COMPLIANCE WITH AQUIFER WATER QUALITY STANDARDS

6.5. TECHNICAL AND FINANCIAL CAPABILITY

6.6. REPORTING OF BANKRUPTCY OR ENVIRONMENTAL ENFORCEMENT

6.7. MONITORING AND RECORDS

6.8. INSPECTION AND ENTRY

6.9. DUTY TO MODIFY

6.10. PERMIT ACTION: AMENDMENT, TRANSFER, SUSPENSION, AND REVOCATION

7.0 ADDITIONAL PERMIT CONDITIONS

7.1. OTHER INFORMATION

7.2. SEVERABILITY

7.3. PERMIT TRANSFER

TABLE OF TABLES

TABLE 1: DISCHARGING FACILITIES

TABLE 2: POINT(S) OF COMPLIANCE

TABLE 3: ACCELERATED MONITORING - ALERT LEVEL EXCEEDANCE

TABLE 4: ACCELERATED MONITORING - AQUIFER QUALITY LIMIT VIOLATION

TABLE 5: QUARTERLY REPORTING DEADLINES

TABLE 6: (SEMI-)ANNUAL REPORTING DEADLINES

TABLE 7: COMPLIANCE SCHEDULE ITEMS

TABLE 8: ROUTINE DISCHARGE MONITORING

TABLE 9: RECLAIMED WATER MONITORING – CLASS A+

TABLE 10: GROUNDWATER MONITORING

TABLE 11: FACILITY INSPECTION AND OPERATIONAL MONITORING

2.0 SPECIFIC CONDITIONS

[A.R.S. §§ 49-203(4), 49-241(A)]

2.1. FACILITY / SITE DESCRIPTION

[A.R.S. § 49-243(K)(8)]

The permittee is authorized to operate the Prescott Valley Wastewater Treatment Plant (WWTP), with a treatment capacity of 3.75 million gallons per day (mgd). The WWTP, also known as the Advanced Treatment Facility (ATF), consists of head works with bar screens, an influent lift station, anoxic and aeration basins for nitrification and denitrification, secondary clarifiers, filters, an ultraviolet (UV) disinfection system, sludge belt press thickeners, sludge drying beds, and a lined effluent storage pond.

Most pumps, blowers, and electrical equipment are housed within buildings for noise control. The entire WWTP site is surrounded by a chain link fence.. All basins are constructed of reinforced concrete. The effluent storage pond is lined with shotcrete and a hypalon liner, and each of the sludge drying beds is lined with either soil cement or asphalt. All the sludge, screenings, grit, and scum, is hauled off-site for disposal.

The following methods and sites are approved for disposal of effluent produced by this facility:

1. Effluent may be disposed via three (3) surface water discharges, as regulated by a valid AZPDES permit:

a. To an unnamed tributary to the Agua Fria River located on the south side of the ATF (Outfall 001),

b. To Navajo Wash, a tributary to the Agua Fria River located on the south side of Mountain Valley Park, which includes two unlined lakes constructed within the wash (Outfall 002), and/or

c. In an emergency overflow situation, from the North Plains Site recharge basins to Coyote Wash and the Agua Fria River (Outfall 003).

2. Effluent may be recharged to an in-channel constructed underground storage facility (CUSF) extending approximately 2.2 miles downstream from the ATF within the Agua Fria River channel, via berms constructed in the bed of the Agua Fria River, as regulated by a valid ADWR permit;

3. Effluent may be recharged at Mountain Valley Town Park, located approximately 2.75 miles west-northwest of the ATF, via two vadose zone recharge wells and via up to three direct injection wells pending approval of the recharge permits by the Arizona Department of Water Resources;

4. Effluent may be recharged at the North Plains Site, located approximately a mile north of the ATF, via recharge basins;

5. Reclaimed Water meeting Class A+ standards may be discharged under a valid Reclaimed Water permit for any allowable Class A, B or C use; and

6. Effluent may be used in plant processes or to wash filters and other equipment at the ATF site (plant utility flow) and return to the plant for treatment.

Groundwater is present at depths ranging from 18 to 104 feet below the ground surface (bgs) in the surrounding area, with the shallowest groundwater found near the Agua Fria River channel. A groundwater divides trending southwest to northeast crosses the North Plains Site. Groundwater north of this divide flows north-northwest into the Little Chino groundwater basin. Groundwater south of this divide flows south-southeast, subparallel to the Agua Fria River.

All industrial hookups and other non-residential hookups to the treatment system shall be authorized according to the applicable federal, state or local regulations.

The site includes the following permitted discharging facilities:

Table 1: DISCHARGING FACILITIES Facility Latitude Longitude

Prescott Valley WWTP (ATF) 34° 35' 16" N 112° 16' 22" W AZPDES Outfall 001 34° 35' 14" N 112° 16' 18" W AZPDES Outfall 002 34° 36' 07" N 112° 18' 48" W AZPDES Outfall 003 34° 36' 02" N 112° 16' 45" W Upper (West) Lake 34° 36' 08" N 112° 18' 46" W Lower (East) Lake 34° 36' 11" N 112° 18' 42" W Effluent Storage Pond 34° 35' 16" N 112° 16' 19" W Sludge Drying Beds 34° 35' 16" N 112° 16' 25" W

Recharge Basins at the North Plains Site Basin 1A 34° 36’ 28” N 112° 16’ 43” W Basin 2A 34° 36’ 25” N 112° 16’ 46” W Basin 3A 34° 36’ 20” N 112° 16’ 49” W Basin 4A 34° 36’ 15” N 112° 16’ 49” W Basin 5A 34° 36’ 04” N 112° 16’ 43” W Basin 1B 34° 36’ 38” N 112° 16’ 39” W Basin 2B 34° 36’ 33” N 112° 16’ 37” W Basin 3B 34° 36’ 27” N 112° 16’ 34” W Basin 4B 34° 36’ 23” N 112° 16’ 38” W Basin 5B 34° 36’ 23” N 112° 16’ 34” W Basin 6B 34° 36’ 18” N 112° 16’ 39” W Basin 7B 34° 36’ 18” N 112° 16’ 35” W Basin 8B 34° 36’ 14” N 112° 16’ 33” W Basin 9B 34° 36’ 11” N 112° 16’ 38” W Basin 10B 34° 36’ 10” N 112° 16’ 30” W Basin 11B 34° 36’ 08” N 112° 16’ 42” W Basin 12B 34° 36’ 07” N 112° 16’ 37” W Basin 13B 34° 36’ 06” N 112° 16’ 31” W

Recharge Wells at the Mountain Valley Park USF (MVPUSF) East Vadose Zone Recharge Well 34° 36' 04" N 112° 18' 53" W

West Vadose Zone Recharge Well 34° 36' 03" N 112° 18' 55" W

Recharge Well 1 (RW-1) 34° 36’ 0” N 112° 18’ 54” W Contingency Recharge Well 2

(RW-2) 34° 36’ 08” N 112° 18’ 39” W

Contingency Recharge Well 3

(RW-3) 34° 36’ 09” N 112° 18’ 50” W

Alternate Contingency Recharge Well 3A (RW-3A)0F

1 34° 36’ 03” N 112° 19’ 14” W

1 Alternate Contingency Recharge Well RW-3A will be installed in lieu of RW-3 upon future consideration of access, cost, and future hydrologic conditions.

2.1.1. Annual Registration Fee

[A.R.S. § 49-242 and A.A.C. R18-14-104]

The annual registration fee for this permit is payable to ADEQ each year. The annual registration fee flow rate is established by the permitted flow rate identified in Section 1.1. If the facility is not constructed or is incapable of discharge, the permittee may be eligible for reduced fees pursuant to A.A.C. R18-14-104(A), Table 2. Send all correspondence requesting reduced fees to the Groundwater Protection Value Stream.

Please reference the permit number, LTF number, and the reason for requesting reduced fees under this rule.

2.1.2. Financial Capability

[A.R.S. § 49-243(N) and A.A.C. R18-9-A203 ]

The permittee has demonstrated financial capability under A.R.S. § 49-243(N) and A.A.C. R18-9-A203. The estimated dollar amount for facility closure is $6,476,033.29. The financial capability was demonstrated through A.A.C. R18-9-A203(B)(1)and(2).

2.2. BEST AVAILABLE DEMONSTRATED CONTROL TECHNOLOGY (BADCT)

[A.R.S. § 49-243(B) and A.A.C. R18-9-A202(A)(5)]

The treatment facility shall be designed, constructed, operated, and maintained to meet the treatment performance criteria for new facilities as specified in A.A.C. R18-9-B204. The facility shall meet the performance requirement for industrial pre-treatment as per A.A.C. R18-9-B204(B)(6)(b).

2.2.1. Engineering Design

The WWTP was designed as per the design report prepared and stamped, dated and signed (sealed) by Black & Veatch, Inc., dated January 19, 2005. The North Plains Site was designed as per the design report prepared and sealed by Thomas Martinez, P.E. (Professional Engineer), of Westland Resources, Inc., dated March 15, 2012, and subsequent sealed submittals that served as additions to the design report.

2.2.2. Site-Specific Characteristics

Site specific characteristics were not used to determine BADCT.

2.2.3. Pre-Operational Requirements

Not applicable.

2.2.4. Operational Requirements

1. The permittee shall maintain a copy of the up-to-date operations and maintenance manual at the treatment facility site at all times; the manual shall be available upon request during inspections by ADEQ personnel.

2. The pollution control structures shall be inspected for the items listed in Section 4.2, Table 11:

FACILITY INSPECTION AND OPERATIONAL MONITORING

2.2.5. Reclaimed Water Classification

[A.A.C. R18-9-B701(C)(2)(a), A.A.C. R18-11-303 through 307]

The treatment facility is rated as producing reclaimed water meeting the Class A+ Reclaimed Water Quality Standards (A.A.C. R18-11, Article 3) which may be used for any allowable Class A, B, or C use under a valid reclaimed water permit (A.A.C. R18-9, Article 7).

2.2.6. Certified Areawide Water Quality Management Plan Conformance [A.A.C. R18-9-A201(B)(6)(a)]

Facility operations must conform to the approved Certified Areawide Water Quality Management Plan according to the 208 consistency determination in place at the time of permit issuance.

2.3. DISCHARGE LIMITATIONS

[A.R.S. §§ 49-201(14), 49-243 and A.A.C. R18-9-A205(B)]

1. The permittee is authorized to operate the treatment facility with a maximum average monthly flow of

3.75 mgd.

2. The permittee shall notify all users that the materials authorized to be disposed of through the treatment facility are typical household sewage and pre-treated commercial wastewater and shall not include motor oil, gasoline, paints, varnishes, hazardous wastes, solvents, pesticides, fertilizers or other materials not generally associated with toilet flushing, food preparation, laundry facilities and personal hygiene.

3. The permittee shall operate and maintain all permitted facilities to prevent unauthorized discharges pursuant to A.R.S. § 49-201(12) resulting from failure or bypassing of applicable BADCT.

4. Specific discharge limitations are listed in Section 4.2, Table 8: ROUTINE DISCHARGE

MONITORING.

2.4. POINT OF COMPLIANCE (POC)

[A.R.S. § 49-244]

The Points of Compliance (POCs) have been established at the following locations:

Table 2: POINT(S) OF COMPLIANCE

POC # POC Location Latitude (North)

Longitude (West)

Non-hazardous POC well located 0.9 mile southeast

(downgradient) of the ATF and AZPDES Outfall

001 (MW-1)

34° 34’ 40” N 112° 15’ 40” W

Hazardous/non-hazardous POC well located 2.5 miles northwest of the ATF and north

(downgradient) of AZPDES Outfall 002 and Contingency Recharge Well 3 (OBW-1)

34° 36’ 11” N 112° 18’ 45” W

3 Conceptual hazardous POC located on the east side of the ATF site (Location only, no well) 34° 35’ 16” N 112° 16’ 18” W

5 Hazardous/non-hazardous POC well located at the south end of the North Plains Site (MW-NP-2) 34° 36’ 02” N 112° 16’ 39” W

6 Hazardous/non-hazardous POC well located near the north end of the North Plains Site (MW-NP-3) 34° 36’ 31” N 112° 16’ 43” W

7 Hazardous/non-hazardous POC well located at the north end of the North Plains Site (MW-NP-4) 34° 36’ 41” N 112° 16’ 39” W

Hazardous/non-hazardous POC well located 2.5 miles northwest of the ATF at MVPUSF and northerly (downgradient) of Recharge Well 1

(MVP-1)

34° 36’ 02” N 112° 18’ 53” W

Hazardous/non-hazardous POC well located 2.5 miles northwest of the ATF at MVPUSF and northeast (downgradient) of Contingency Recharge Well 2 (MVP-2)

34° 36’ 11” N 112° 18’ 34” W

Hazardous/non-hazardous POC well located 2.5 miles northwest of the ATF at MVPUSF and northerly (downgradient) of Contingency Recharge Well 3A (MVP-3)

34° 36’ 06” N 112° 19’ 12” W

Routine groundwater monitoring is required at POC No. 1, POC No. 2, POC No. 5 and POC No. 6 at the time of permit issuance. Groundwater monitoring is not required at POC No. 3 at the time of permit issuance.

ADEQ has determined that the former POC No. 4 (MW-NP-1) does not qualify as a POC, because it is not located downgradient of the recharge basins at the North Plains Site. POC No. 4 has therefore been removed from the permit.

Routine groundwater monitoring will not be required at POC No. 7 until recharge basins are constructed at the North Plains Site and placed in service. The first routine groundwater sample shall be collected at POC No. 7 within 30 days after the first date of recharge at Basin 1B and/or Basin 2B, as required under Section 3.0.

Routine groundwater monitoring will not be required at POC No. 8 and POC No. 9 at the MVPUSF until following 30 days after the first date of recharge at Recharge Well RW-1 and Contingency Recharge Well RW- 2, respectively. Routine groundwater monitoring will not be required at POC No. 10 at the MVPUSF until following 30 days after the first date of recharge at Contingency Recharge Well RW-3A. Routine groundwater monitoring at POC No.2 (OBW-1) shall serve to monitor groundwater downgradient from both AZPDES Outfall 002 and Contingency Recharge Well RW-3.

The director may require an amendment of this permit to install a monitoring well if there is cause or concern that groundwater quality may be impacted at the POC. The Director may amend this permit to designate additional points of compliance if information on groundwater gradients or groundwater usage indicates the need.

2.5. MONITORING REQUIREMENTS

[A.R.S. § 49-243(K)(1), A.A.C. R18-9-A206(A)]

Unless otherwise specified in this permit, all monitoring required in this permit shall continue for the duration of the permit, regardless of the status of the facility. Unless otherwise provided, monitoring shall commence the first full monitoring period following permit issuance. All sampling, preservation and holding times shall be in accordance with currently accepted standards of professional practice. Trip blanks, equipment blanks and duplicate samples shall also be obtained, and Chain-of-Custody procedures shall be followed, in accordance with currently accepted standards of professional practice. Copies of laboratory analyses and Chain-of-Custody forms shall be maintained at the permitted facility. Upon request, these documents shall be made immediately available for review by ADEQ personnel.

2.5.1. Pre-Operational Monitoring

Not applicable at the time of permit issuance.

2.5.2. Routine Discharge Monitoring

The permittee shall monitor the effluent according to Section 4.2, Table 8: ROUTINE DISCHARGE MONITORING. Representative samples of the effluent shall be collected immediately downstream of the UV disinfection system. Flow monitoring will be conducted at a meter immediately downstream of the UV disinfection system, a meter located on the pipeline connecting the ATF to the North Plains Site, and a flow meter located on the pipeline connecting the ATF to Mountain Valley Park.

2.5.3. Reclaimed Water Monitoring

The permittee shall monitor the reclaimed water according to the Class A+ Reclaimed Water Monitoring Table in Section 4.2, Table 9: RECLAIMED WATER MONITORING – CLASS A+, in addition to the routine discharge monitoring parameters listed in Table 8: ROUTINE DISCHARGE MONITORING. The facility is not required to monitor the reclaimed water under Table 9: RECLAIMED WATER MONITORING – CLASS A+ when not reusing the reclaimed water. The facility shall record “No Flow” on the SMRFs when not reusing. Representative samples of the reclaimed water shall be collected immediately downstream of the UV disinfection system.

2.5.4. Facility / Operational Monitoring

Operational monitoring inspections shall be conducted according to Section 4.2, Table 11: FACILITY

INSPECTION AND OPERATIONAL MONITORING.

If any damage of the pollution control structures is identified during inspection, proper repair procedures shall be performed. All repair procedures and materials used shall be documented in the facility log book as per Section 2.7.2 and reported to ADEQ in case of a violation or exceedance as per Section 2.7.3.

2.5.5. Groundwater Monitoring and Sampling Protocols

Groundwater monitoring will be conducted at POC Nos. 1, 2, 5 and 6 at the time of permit issuance.

Groundwater monitoring will not be conducted at POC No. 3 at the time of permit issuance. Groundwater monitoring will be conducted at POC No. 8, POC No. 9 and POC No. 10 as recharge wells are constructed at the MVPUSF and enter service (see Section 3.0, Compliance Schedule).

Static water levels shall be measured and recorded prior to sampling. Wells shall be purged of at least three borehole volumes (as calculated using the static water level) or until field parameters (pH, temperature, conductivity) are stable, whichever represents the greater volume. If evacuation results in the well going dry, the well shall be allowed to recover to 80 percent of the original borehole volume, or for 24 hours, whichever is shorter, prior to sampling. If after 24 hours there is not sufficient water for sampling, the well shall be recorded as “dry” for the monitoring event. An explanation for reduced pumping volumes, a record of the volume pumped, and modified sampling procedures shall be reported and submitted with the SMRF.

The permittee may conduct the sampling using the low-flow purging method as described in the Arizona Water Resources Research Center, March 1995 Field Manual for Water Quality Sampling. The well must be purged until indicator parameters stabilize. Indicator parameters shall include dissolved oxygen, turbidity, pH, temperature, and conductivity.

2.5.5.1. POC Well Replacement

In the event that one or more of the designated POC wells should become unusable or inaccessible due to damage, exceedance of an alert level (AL) for water level as required by Section 2.6.2.3.4(3), or any other event, a replacement POC well shall be constructed and installed upon approval by ADEQ. If the replacement well is fifty feet or less from the original well, the ALs and/or aquifer quality limits (AQLs) calculated for the designated POC well shall apply to the replacement well.

2.5.6. Surface Water Monitoring and Sampling Protocols

Routine surface water monitoring is not required under the terms of this permit.

2.5.7. Analytical Methodology

All samples collected for compliance monitoring shall be analyzed using Arizona state-approved methods.

If no state-approved method exists, then any appropriate EPA-approved method shall be used. Regardless of the method used, the detection limits must be sufficient to determine compliance with the regulatory limits of the parameters specified in this permit. If all methods have detection limits higher than the applicable limit, the permittee shall follow the applicable contingency requirements of Section 2.6 and may propose “other actions” including amending the permit to set higher limits. Analyses shall be performed by a laboratory licensed by the Arizona Department of Health Services, Office of Laboratory Licensure and Certification unless exempted under A.R.S. 36-495.02. For results to be considered valid, all analytical work shall meet quality control standards specified in the approved methods. A list of state-certified laboratories in Arizona can be obtained at the address below:

Arizona Department of Health Services Office of Laboratory Licensure and Certification

250 North 17th Avenue Phoenix, Arizona 85007 Phone: (602) 364-0720

2.5.8. Installation and Maintenance of Monitoring Equipment

Monitoring equipment required by this permit shall be installed and maintained so that representative samples required by the permit can be collected. If new groundwater wells are determined to be necessary, the construction details shall be submitted to the Groundwater Protection Value Stream for approval prior to installation and the permit shall be amended to include any new monitoring points.

2.6. CONTINGENCY PLAN REQUIREMENTS

[A.R.S. § 49-243(K)(3), (K)(7) and A.A.C. R18-9-A204 and R18-9-A205]

2.6.1. General Contingency Plan Requirements

At least one copy of this permit and the approved contingency and emergency response plan submitted in the application shall be maintained at the location where day-to-day decisions regarding the operation of the facility are made. The permittee shall be aware of and follow the contingency and emergency plans.

Any AL exceedance, or violation of an AQL, DL, or other permit condition shall be reported to ADEQ following the reporting requirements in Section 2.7.3, unless more specific reporting requirements are set forth in Section 2.6.2 through 2.6.5.

Some contingency actions involve verification sampling. Verification sampling shall consist of the first follow-up sample collected from a location that previously indicated a violation or the exceedance of an AL.

Collection and analysis of the verification sample shall use the same protocols and test methods to analyze for the pollutant or pollutants that exceeded an AL or violated an AQL or DL. Where verification sampling is specified in this permit, it is the option of the permittee to perform such sampling. If verification sampling is not conducted within the timeframe allotted, ADEQ and the permittee shall presume the initial sampling result to be confirmed as if verification sampling had been conducted. The permittee is responsible for compliance with contingency plans relating to the exceedance of an AL or violation of a DL, AQL or any other permit condition. The permittee is subject to enforcement action for the failure to comply with any contingency actions in this permit.

2.6.2. Exceeding of Alert Levels and Performance Levels

2.6.2.1. Exceeding Of Performance Levels Set For Operational Conditions

For freeboard alert levels, the permittee shall comply with the requirements as specified in Section 4.2, Table 11: FACILITY INSPECTION AND OPERATIONAL MONITORING to prevent the overtopping of an impoundment or sludge drying bed. If an impoundment or sludge drying bed is overtopped, the permittee shall follow the requirements in Section 2.6.5.3 and the reporting requirements of Section 2.7.3.

If an alert level set in Section 4.2, Table 11: FACILITY INSPECTION AND OPERATIONAL MONITORING has been exceeded the permittee shall:

1. Notify the Groundwater Protection Value Stream within five (5) days of becoming aware of the exceedance.

2. Submit a written report to the Groundwater Protection Value Stream within 30 days after becoming aware of the exceedance. The report shall document all of the following:

a. A description of the exceedance and the cause of the exceedance;

b. The period of the exceedance, including exact date(s) and time(s), if known, and the anticipated time period during which the exceedance is expected to continue;

c. Any action taken or planned to mitigate the effects of the exceedance or spill, or to eliminate or prevent recurrence of the exceedance or spill;

d. Any monitoring activity or other information which indicates that any pollutants would be reasonably expected to cause a violation of an AWQS; and

e. Any malfunction or failure of pollution control devices or other equipment or process.

3. The facility is no longer on alert status once the operational indicator no longer indicates that a performance level is being exceeded. The permittee shall, however, complete all tasks necessary to return the facility to its pre-alert operating condition.

2.6.2.2. Exceeding of Alert Levels (ALs) Set for Discharge Monitoring

1. If an AL set in Section 4.2, Table 8: ROUTINE DISCHARGE MONITORING has been exceeded, the permittee shall immediately investigate to determine the cause. The investigation shall include the following:

a. Inspection, testing, and assessment of the current condition of all treatment or pollutant discharge control systems that may have contributed to the exceedance;

b. Review of recent process logs, reports, and other operational control information to identify any unusual occurrences; and

c. If the investigation procedures indicated in (a) and (b) above fail to reveal the cause of the exceedance, the permittee shall sample individual waste streams composing the wastewater for the parameter(s) in question, if necessary to identify the cause of the exceedance.

2. The permittee shall initiate actions identified in the approved contingency plan referenced in Section 5.0 and specific contingency measures identified in Section 2.6 to resolve any problems identified by the investigation which may have led to the AL exceedance. To implement any other corrective action the permittee shall obtain prior approval from ADEQ according to Section 2.6.6.

3. Within thirty days of an AL exceedance, the permittee shall submit the laboratory results to the Groundwater Protection Value Stream along with a summary of the findings of the investigation, the cause of the exceedance, and actions taken to resolve the problem.

4. Upon review of the submitted report, the Department may amend the permit to require additional monitoring, increased frequency of monitoring, amendments to permit conditions or other actions.

2.6.2.2.1. Exceeding Permit Flow Limit

If the AL for average monthly flow in Section 4.2, Table 8: ROUTINE DISCHARGE MONITORING has been exceeded, the permittee shall submit an application to the Groundwater Protection Value Stream for a permit amendment to expand the treatment facility, or submit a report detailing the reasons an expansion is not necessary. Acceptance of the report instead of an application for amendment requires ADEQ approval.

2.6.2.3. Exceeding of Alert Levels in Groundwater Monitoring

2.6.2.3.1. Alert Levels For Indicator Parameters

No ALs have been established for indicator parameters.

2.6.2.3.2. Alert Levels for Pollutants with Numeric Aquifer Water Quality Standards

1. In the case of an exceedance of an AL for a pollutant set in Section 4.2, Table 10:

GROUNDWATER MONITORING, the permittee may conduct verification sampling for those pollutant(s) that exceeded their respective AL(s) within five (5) days of becoming aware of the exceedance. The permittee may use results of another sample taken between the date of the last sampling event and the date of receiving the result as verification.

2. If verification sampling confirms the AL exceedance or if the permittee opts not to perform verification sampling, then the permittee shall increase the frequency of monitoring for each pollutant exceeding its’ respective AL(s) as follows:

Table 3: ACCELERATED MONITORING - ALERT LEVEL EXCEEDANCE Specified Monitoring Frequency Monitoring Frequency for AL Exceedance

Daily Daily Weekly Daily Monthly Weekly Quarterly Monthly

Semi-annually Quarterly Annually Quarterly

In addition, the permittee shall immediately initiate an investigation of the cause of the AL exceedance, including inspection of all discharging units and all related pollution control devices, review of any operational and maintenance practices that might have resulted in an unexpected discharge, and hydrologic review of groundwater conditions including upgradient water quality.

3. The permittee shall initiate actions identified in the approved contingency plan referenced in Section 5.0 and specific contingency measures identified in Section 2.6 to resolve any problems identified by the investigation which may have led to an AL exceedance. To implement any other corrective action the permittee shall obtain prior approval from ADEQ according to Section 2.6.6. Alternatively, the permittee may submit a technical demonstration, subject to written approval by the Groundwater Protection Value Stream, that although an AL has been exceeded, the pollutant(s) that exceeded their respective AL(s) are not reasonably expected to cause a violation of an AQL. The demonstration may propose a revised AL or monitoring frequency, for those pollutant(s) that exceeded their respective AL(s), for approval in writing by the Groundwater Protection Value Stream.

4. Within 30 days after confirmation of an AL exceedance, for each pollutant that exceeded an AL, the permittee shall submit the laboratory results to the Groundwater Protection Value Stream along with a summary of the findings of the investigation, the cause of the exceedance, and actions taken to resolve the problem.

5. Upon review of the submitted report, the Department may amend the permit to require additional monitoring, increased frequency of monitoring, amendments to permit conditions or other actions.

6. For each pollutant that exceeded an AL, the increased monitoring required as a result of an AL exceedance may be reduced to the monitoring frequency in Section 4.2, Table 10:

GROUNDWATER MONITORING if the results of four sequential sampling events of those pollutants demonstrate that they did not exceed the AL.

7. If the increased monitoring required as a result of an AL exceedance continues for more than six (6) sequential sampling events, the permittee shall submit to ADEQ a second report documenting an investigation of each pollutant which continued to exceed an AL. This report is due within 30 days of the receipt of laboratory results of the sixth (6th) sampling event.

2.6.2.3.3. Alert Levels to Protect Downgradient Users from Pollutants without Numeric Aquifer Water Quality Standards

Not required at time of issuance.

2.6.2.3.4. Alert Level For Groundwater Level

1. If monitoring indicates the groundwater level is not within the allowable range established by the Alert Level (AL) in Section 4.2, Table 10: GROUNDWATER MONITORING, the permittee shall submit a written report to the Groundwater Protection Value Stream within 30 days after becoming aware of the exceedance. The report shall document the following:

a. the as-built configuration of the well including the screened interval;

b. all groundwater level measurements available for the well;

c. a discussion and analysis of any trends or seasonal variations in the groundwater level measurements;

d. information on groundwater recharge, withdrawal, or other hydrologic conditions in the vicinity of the well, and;

e. any other pertinent information obtained by the permittee.

2. If monitoring indicates the groundwater level is not within the allowable range established by the Alert Level (AL) in Section 4.2, Table 10: GROUNDWATER MONITORING for more than four (4) sequential sampling events, the permittee shall submit a second report which evaluates the cause(s) of the exceedance and recommends whether the well should be replaced pursuant to Section 2.5.5.1. The report shall discuss and demonstrate whether samples representative of the water quality of the relevant aquifer can be practicably obtained from the well.

3. Upon review of the submitted report, the Department may amend the permit to require replacement of the well, require additional permit conditions, or other actions.

2.6.2.3.5. Alert Level for Fecal Coliform in Groundwater

1. In the case of an exceedance of the AL for Fecal Coliform in Section 4.2, Table 10:

GROUNDWATER MONITORING: The permittee may conduct verification sampling within five (5) days of becoming aware of the exceedance of the Fecal Coliform. The permittee may use results of another sample taken between the date of the last sampling event and the date of receiving the result as verification. If verification sampling confirms the AL exceedance or if the permittee opts not to perform verification sampling, then the permittee shall conduct monitoring required below.

2. If the AL for Fecal Coliform is exceeded, the permittee shall begin monitoring for total coliform.

3. If the total coliform AQL is exceeded, then the permittee must follow the requirements of section 2.6.4.

4. Permittee may cease monitoring for total coliform when neither the Fecal Coliform alert level nor the total coliform AQL are exceeded for four consecutive months.

2.6.3. Discharge Limit Violation

1. If a DL set in Section 4.2, Table 8: ROUTINE DISCHARGE MONITORING or Table 9:

RECLAIMED WATER MONITORING has been violated, the permittee shall immediately investigate to determine the cause. The investigation shall include the following:

a. Inspection, testing, and assessment of the current condition of all treatment or pollutant discharge control systems that may have contributed to the violation;

b. Review of recent process logs, reports, and other operational control information to identify any unusual occurrences;

c. If the investigation procedures indicated in (a) and (b) above fail to reveal the cause of the violation, the permittee shall sample individual waste streams composing the wastewater for the parameters in violation, as necessary to identify the cause of the violation.

The permittee shall submit a report to the Groundwater Protection Value Stream according to Section 2.7.3, which includes a summary of the findings of the investigation, the cause of the violation, and actions taken to resolve the problem. The permittee shall consider and ADEQ may require corrective action that may include control of the source of discharge, cleanup of affected soil, surface water or groundwater, notification of downstream or downgradient users who may be directly affected by the discharge, and mitigation of the impact of pollutants on existing uses of the aquifer. Corrective actions shall either be specifically identified in this permit, included in an ADEQ-approved contingency plan, or separately approved according to Section 2.6.6.

2. Upon review of the submitted report, the Department may amend the permit to require additional monitoring, increased frequency of monitoring, amendments to permit conditions, or other actions.

2.6.4. Aquifer Quality Limit Violation

1. If an AQL set in Section 4.2, Table 10: GROUNDWATER MONITORING has been exceeded, the permittee may conduct verification sampling for those pollutant(s) that were above their respective AQL(s) within five (5) days of becoming aware of the exceedance. The permittee may use results of another sample taken between the date of the last sampling event and the date of receiving the result as verification.

2. If verification sampling does not confirm an AQL exceedance, no further action is needed under this Section.

3. If verification sampling confirms that an AQL was exceeded for any parameter or if the permittee opts not to perform verification sampling, then, the permittee shall increase the frequency of monitoring for those parameters as follows:

Table 4: ACCELERATED MONITORING - AQUIFER QUALITY LIMIT VIOLATION Specified Monitoring Frequency Monitoring Frequency for AQL Violation

Daily Daily Weekly Daily Monthly Weekly Quarterly Monthly

Semi-annually Quarterly Annually Quarterly

In addition, the permittee shall immediately initiate an evaluation for the cause of the violation, including inspection of all discharging units and all related pollution control devices, and review of any operational and maintenance practices that might have resulted in unexpected discharge.

The permittee also shall submit a report according to Section 2.7.3, which includes a summary of the findings of the investigation, the cause of the violation, and actions taken to resolve the problem.

A verified exceedance of an AQL will be considered a violation unless the permittee demonstrates within 30 days that the exceedance was not caused or contributed to by pollutants discharged from the facility. Unless the permittee has demonstrated that the exceedance was not caused or contributed to by pollutants discharged from the facility, the permittee shall consider and ADEQ may require corrective action that may include control of the source of discharge, cleanup of affected soil, surface water, or groundwater, and mitigation of the impact of pollutants on existing uses of the aquifer. Corrective actions shall either be specifically identified in this permit, included in an ADEQ approved contingency plan, or separately approved according to Section 2.6.6.

4. Upon review of the submitted report, the Department may amend the permit to require additional monitoring, increased frequency of monitoring, amendments to permit conditions or other actions.

2.6.5. Emergency Response and Contingency Requirements for Unauthorized Discharges

[A.R.S. § 49-201(12) AND PURSUANT TO A.R.S. § 49-241]

2.6.5.1. Duty To Respond

The permittee shall act immediately to correct any condition resulting from a discharge pursuant to A.R.S. § 49-201(12) if that condition could pose an imminent and substantial endangerment to public health or the environment.

2.6.5.2. Discharge of Hazardous Substances or Toxic Pollutants

In the event of any unauthorized discharge pursuant to A.R.S. § 49-201(12) of suspected hazardous substances (A.R.S. § 49-201(19)) or toxic pollutants (A.R.S. § 49-243(I)) on the facility site, the permittee shall promptly isolate the area and attempt to identify the discharged material. The permittee shall record information, including name, nature of exposure and follow-up medical treatment, if necessary, on persons who may have been exposed during the incident. The permittee shall notify the Groundwater Protection Value Stream within 24 hours of discovering the discharge of hazardous material which (a) has the potential to cause an AWQS or AQL exceedance, or (b) could pose an endangerment to public health or the environment.

2.6.5.3. Discharge of Non-Hazardous Materials

In the event of any unauthorized discharge pursuant to A.R.S. § 49-201(12) of non-hazardous materials from the facility, the permittee shall promptly attempt to cease the discharge and isolate the discharged material. Discharged material shall be removed and the site cleaned up as soon as possible. The permittee shall notify the Groundwater Protection Value Stream within 24 hours of discovering the discharge of non-hazardous material which has the potential to cause an AQL exceedance, or could pose an endangerment to public health or the environment.

2.6.5.4. Reporting Requirements

The permittee shall submit a written report for any unauthorized discharges reported under Sections

2.6.5.2 and 2.6.5.3 to the Groundwater Protection Value Stream within 30 days of the discharge or as required by subsequent ADEQ action. The report shall summarize the event, including any human exposure, and facility response activities and include all information specified in Section 2.7.3. If a notice is issued by ADEQ subsequent to the discharge notification, any additional information requested in the notice shall also be submitted within the time frame specified in the notice. Upon review of the submitted report, ADEQ may require additional monitoring or corrective actions.

2.6.6. Corrective Actions

Specific contingency measures identified in Section 2.6 have already been approved by ADEQ and do not require written approval to implement.

With the exception of emergency response actions taken under Section 2.6.5, the permittee shall obtain written approval from the Groundwater Protection Value Stream prior to implementing a corrective action to accomplish any of the following goals in response to exceedance of an AL, AQL, DL, or other permit condition:

1. Control of the source of an unauthorized discharge;

2. Soil cleanup;

3. Cleanup of affected surface waters;

4. Cleanup of affected parts of the aquifer;

5. Mitigation to limit the impact of pollutants on existing uses of the aquifer.

Within 30 days of completion of any corrective action, the operator shall submit to the Groundwater Protection Value Stream, a written report describing the causes, impacts, and actions taken to resolve the problem.

2.7. REPORTING AND RECORDKEEPING REQUIREMENTS

[A.R.S. § 49-243(K)(2) and A.A.C. R18-9-A206(B) and R18-9-A207]

2.7.1. Self-Monitoring Report Form

1. The permittee shall complete the Self-Monitoring Reporting Forms (SMRFs) provided by ADEQ, and submit the completed report through the myDEQ online reporting system. The permittee shall use the format devised by ADEQ.

2. The permittee shall complete the SMRF to the extent that the information reported may be entered on the form. If no information is required during a reporting period, the permittee shall enter “not required” on the form, include an explanation, and submit the form to the Groundwater Protection Value Stream.

3. The tables contained in Section 4.0 list the monitoring parameters and the frequencies for reporting results on the SMRF:

a. Table 8: ROUTINE DISCHARGE MONITORING

b. Table 9: RECLAIMED WATER MONITORING

c. Table 10: GROUNDWATER MONITORING

The parameters listed in the above-identified tables from Section 4.0 are the only parameters for which SMRF reporting is required.

2.7.2. Operation Inspection / Log Book Recordkeeping

A signed copy of this permit shall be maintained at all times at the location where day-to-day decisions regarding the operation of the facility are made. A log book (paper copies, forms, or electronic data) of the inspections and measurements required by this permit shall be maintained at the location where day-to-day decisions are made regarding the operation of the facility. The log book shall be retained for ten years from the date of each inspection, and upon request, the permit and the log book shall be made immediately available for review by ADEQ personnel. The information in the log book shall include, but not be limited to, the following information as applicable:

1. Name of inspector;

2. Date and shift inspection was conducted;

3. Condition of applicable facility components;

4. Any damage or malfunction, and the date and time any repairs were performed;

5. Documentation of sampling date and time; and

6. Any other information required by this permit to be entered in the log book.

7. Monitoring records for each measurement shall comply with A.A.C. R18-9-A206(B)(2).

2.7.3. Permit Violation and Alert Level Status Reporting

1. The permittee shall notify the Groundwater Protection Value Stream within five (5) days (except as provided in Section 2.6.5) of becoming aware of an AL exceedance, or violation of any permit condition, AQL, or DL for which notification requirements are not specified in Sections 2.6.2 through 2.6.5.

2. The permittee shall submit a written report to the Groundwater Protection Value Stream within 30 days of becoming aware of the violation of any permit condition, AQL, or DL. The report shall document all of the following:

a. Identification and description of the permit condition for which there has been a violation and a description of the cause;

b. The period of violation including exact date(s) and time(s), if known, and the anticipated time period during which the violation is expected to continue;

c. Any corrective action taken or planned to mitigate the effects of the violation, or to eliminate or prevent a recurrence of the violation;

d. Any monitoring activity or other information which indicates that any pollutants would be reasonably expected to cause a violation of an AWQS;

e. Proposed changes to the monitoring which include changes in constituents or increased frequency of monitoring; and

f. Description of any malfunction or failure of pollution control devices or other equipment or processes.

2.7.4. Operational, Other or Miscellaneous Reporting

The permittee shall record the information as required in Section 4.2, Table 11: FACILITY INSPECTION AND OPERATIONAL MONITORING in the facility log book as per Section 2.7.2, and report to the Groundwater Protection Value Stream any violations or exceedances as per Section 2.7.3.

If the treatment facility is classified for reclaimed water under this permit, the permittee shall submit the reclaimed water monitoring results and flow volumes to any of the following in accordance with A.A.C. R18- 9-B701(C)(2)(c):

1. Any reclaimed water agent who has contracted for delivery of reclaimed water from the permittee;

and

2. Any end user who has not waived interest in receiving this information.

2.7.5. Reporting Location

All Self-Monitoring Report Forms (SMRFs) shall be submitted through the myDEQ portal accessible on the ADEQ website at: http://www.azdeq.gov/welcome-mydeq

All other documents required by this permit shall be mailed to:

The Arizona Department of Environmental Quality Groundwater Protection Value Stream

Mail Code 5415B-3 1110 West Washington Street

Phoenix, Arizona 85007 Phone (602) 771-4571 http://www.azdeq.gov/welcome-mydeq

2.7.6. Reporting Deadline

The following table lists the quarterly report due dates:

Table 5: QUARTERLY REPORTING DEADLINES Monitoring Conducted During Quarter: Quarterly Report Due By:

January-March April 30 April-June July 30

July-September October 30 October-December January 30

The following table lists the semi-annual and annual report due dates if applicable:

Table 6: (SEMI-)ANNUAL REPORTING DEADLINES Monitoring Conducted: Report Due By:

Semi-annual: January-June July 30 Semi-annual: July-December January 30 Annual: January-December January 30

2.7.7. Changes To Facility Information In Section 1.0

The Groundwater Protection Value Stream shall be…