J.3_Nogales_final_permit_AZ0025607-TXT.pdf

ADEQ Inventory No. 100620 LTFNo. 56184

Permit No. AZ0025607

AUTHORIZATION TO DISCHARGE UNDER THE

ARIZONA POLLUTANT DISCHARGE ELIMINATION SYSTEM

In compliance with the provisions of Arizona Revised Statutes (A.R.S.) Title 49, Chapter 2, Article 3.1; the Federal Water Pollution Control Act, (33 USC §1251 et. seq., as amended), and Arizona Administrative Code (A.A.C.)

Title 18, Chapter 9, Articles 9 and 10, and amendments thereto, City ofNogales 777 Grand A venue

Nogales, Arizona 85621 and

International Boundary and Water Commission, U.S. Section (USIBWC) 4171 N. Mesa Street, C-100

El Paso, Texas 79902 are authorized to discharge treated wastewater from the Nogales International Wastewater Treatment Plant (NIWTP) located at 865 Rio Rico Industrial Park, Rio Rico, Arizona, serving: 1) the cities ofNogales and Rio Rico in Santa Cruz County, Arizona and 2) the city ofNogales, in Sonora, Mexico, to an unnamed tributary of the Santa Cruz River at:

Outfall No. Latitude Longitude Legal

001 31' 27' 20.86" N 11 0' 58' 05.34" w Township 23S, Range 13E, Section 12 in accordance with effluent limitations, monitoring requirements and other conditions set forth herein, and in the attached "Standard AZPDES Permit Conditions."

This permit shall become effective on __________ ___.:_M_a......:c...r.:....._c..k __ ..=:;'-'l'--------' 2014.

This permit and the authorization to discharge shall expire at midnight, _ ___,M._ea..---'-r._c:.-l-._;__ _ _.;.3_o ____ , 2019.

Signed this }/ s.J.. day of __ -+m--'-~-rrk_ _________________ ,2014.

Michael A. Fulton, Duector Water Quality Division Department of Environmental Quality

TABLE OF CONTENTS

Permit No. AZ0025607

EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Effluent Limitations and Monitoring Requirements

Trace Substance Monitoring Requirements

WET Testing

Effluent Characterization Testing- General Chemistry and Microbiology

Effluent Characterization Testing- Selected Metals, Trace Substances, WET

Effluent Characterization Testing -Selected Volatile Organic Compounds

Effluent Characterization Testing- Selected Acid-extractable Compounds

Effluent Characterization Testing- Selected Base Neutral Compounds

Effluent Characteristic Testing Based on Designated Uses

Narrative Standards

Sampling Location(s)

MONITORING AND REPORTING

Sample Collection and Analysis

QA Manual

Use of Approved Methods

LOQs

Reporting of Monitoring Results

Twenty-four Hour Reporting of Noncompliance

Monitoring Records ....... :

BIOSOLIDS /SEWAGE SLUDGE REQUIREMENTS

Use or Disposal Requirements

Biosolids Preparer's Responsibility

Duty to Mitigate

General Requirements

Biosolids Storage

Surface Water Protection

Facilities with Pretreatment Programs

Inspection and Entry

General Biosolids Monitoring Requirements

Biosolids Self-monitoring Frequency

Sampling and Analyses Methods

Representative Sampling

Testing Stockpiled Biosolids Prior to Distribution or Use

Testing for Hazardous Waste Determination

Biosolids Limitations and Monitoring

Metals Concentrations for Land Application

Pathogen Reduction Requirements for Land Appllication

Vector Reduction Records

Nitrogen Testing

Management Practices for Land Application

Biosolids/Sewage Sludge Limitations and Monitoring Requirementsfor Surface Disposal

Biosolids Monitoring Requirements for Disposal in a Municipal Landfill

On-site Management Plan

Record Keeping

Notification Requirements

Notification of Noncompliance

Notification of Shipment to Another State

Notification of Changes in Land Application Sites, or Disposal Methods

Notification for Land Application of Biosolids with High Metals

Notification to Subsequent Land Applicators

Notice of Surface Disposal

Annual Report for All Permittees

Reporting Locations

WHOLE EFFLUENT TOXICITY TESTING REQUIREMENTS

General Conditions

Chronic Toxicity

Quality Assurance.;

Toxicity Identification Evaluation (TIE)/Toxicity Reduction Evaluation (TRE) Processes

WET Reporting

SPECIAL CONDITIONS

Pre-Treatment Conditions (USIBWC)

Additional Pretreatment Requirements (USIBWC)

Pre-Treatment Conditions (City of Nogales)

Ambient Monitoring Requirements

Operation

Reopener

APPENDIX A

PART A: ACRONYMS

PART 8: DEFINITIONS

APPENDIX B

Ammonia Data Log and Standard Tables

APPENDIX C ......................................................................................................... ATTACHED

STANDARD CONDITIONS

Page4 of 56

PART I. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

A. Effluent Limitations and Monitoring Requirements

The permittees shall limit and monitor discharges from Outfall 001 as specified in Table 1 which follows. These requirements are based on the designed maximum monthly average flow of 65,109 m3/day (17.2 MGD). Additional monitoring requirements and influent limitations are specified in Part V.A.

TABLE 1: Effluent Limitations and Monitoring Requirements

11~''111J,'f liF'~!J7;•t;~~;l,,~~~~1~~~~,;i~0~: ~)~:lV ~~~•'''··' g'

, · · Moljitoring ,~eq~lrem~nt · ' ' : ' ·~2)(3)(5) '

.:~.1i •''''l'B'''' ici•h\.•0\U!Cli· '' '! ' "'·'>5' ' ' '

' " l : \

1:{,{ :M5~th~,, !.~};,, · ' ,, !:t '''· • ·•. · ~o'nitoring • [1 1):§~Mpt~:J.~~:::. ;·,, 'i: '"" , Monthly· . :·.;,~ :~:d·( . , . Da!IY .. mm.·q'l'\,!~''='~j·lii!lit; IT? m:: < •/'!\·ir;' , · Average , : ,1,.,-,,,,.,.,, ?L Maximum ,. Freqtlency · F , T

.. :r ' (16) ' < Discharge Flow

REPORT(4) --- REPORT --- --- --- Continuous Metered

(MGD)

Carbonaceous Biochemical 1630 2600

25 mg/L 40 mg/L 1x/week 24-hour

Oxygen Demand kg/day kg/day --- --- Composite (5) (CBOD) (5-day) (6)

85% 24-hour CBOD(6) --- --- --- REMOVAL --- --- 1x/week

Composite

MINIMUM

Total Suspended 2000 2900 30 mg/L 45 mg/L 1x/week 24-hour

Solids (TSS) (6) kg/day kg/day --- --- Composite

85% 24-hour TSS(6) --- --- --- REMOVAL --- -- 1x/week

Composite

MINIMUM

126 575 E coli --- --- --- cfu/100 mL --- cfu/100 mL 1x/week Discrete

(7) (7)

Total Residual Chlorine (TRC) (8) 650 g/day --- 980 g/day 10 ug/L --- 15 ug/L 1x/day Discrete (9)

Chronic Toxicity PseudokirchnerieUa See Table See Table 1x/3 months

24-hour subcapitata (Green --- --- ---

3 for limits --- 3 for limits Composite algae) (15)

Chronic Toxicity Pimephales See Table See Table 1x/3 months 24-hour promelas (15) --- --- ---

3 for limits --- 3 for limits Composite (Fathead minnow)

Chronic Toxicity Ceriodaphnia See Table See Table

1x/3 months 24-hour dubia (15) (Water --- --- --- 3 for limits --- 3 for limits Composite flea)

Cadmium (11) 150 g/day 350 g/day 2.3 ug/L 5.4 ug/L 1x/2 weeks 24-hour --- ---

Composite

Chromium (Total) 6500 g/day 9500 g/day 100 ug/L 146 ug/L

24-hour

(13) --- --- 1x/2 weeks Composite

Chromium VI (12) 520 g/day --- 1040 g/day 8.0 ug/L --- 16 ug/L 1x/2 weeks

Discrete

Copper (11) 640 g/day 1300 g/day 9.8 ug/L 20 ug/L 24-hour --- --- 1x/2 weeks Composite

Cyanide 510 g/day --- 1040 g/day 7.9 ug/L ---

Lead (11) 210 g/day --- 420 g/day 3.2 ug/L ---

Mercury 0.65 g/day --- 1.3 g/day 0.01 ug/L ---

Nickel (11) 4030 g/day --- 7420 g/day 62 ug/L ---

Selenium 130 g/day --- 200 g/day 2 ug/L ---

Silver (11) 210 g/day --- 420 g/day 3.2 ug/L ---

21500 Zinc(11) 8460 g/day 130 ug/L ------ g/day

Hydrogen Sulfide 130 g/day --- 200 g/day 2 ug/L ---(14)

Sulfides (13) --- --- --- Report ---

Thallium 4880 g/day --- 7100 g/day 75 ug/L ---

Hardness (CaC03) Report -effluent (11) --- --- --- [mg/L] ---

Benzo(a)pyrene 13 g/day --- 19 g/day 0.20 ug/L ---

Di (2-ethylhexl) 26000 13000 g/day 199 ug/L ---phthalate (DEHP) --- g/day

Hexachloro- 16 g/day --- 32 g/day 0.25 ug/L ---cyclopentadiene

Chlordane 10 g/day --- 21 g/day 0.16 ug/L ---

DOD 0.001 ug/L ---

0.065 g/day --- 0.13 g/day

DOE 0.001 ug/L ---0.065 g/day --- 0.13 g/day

DDT 0.001 ug/L ---

0.065 g/day --- 0.13 g/day

Dieldrin 3.2 g/day --- 6.4 g/day 0.049 ug/1 ---

Endosulfan

3.2 g/day 6.4 g/day 0.049 ug/1 ---Sulfate ---

Endosulfan (Total} 3.2 g/day --- 6.4 g/day 0.049 ug/1 ---

Endrin aldehyde 2.1 g/day --- 4.3 g/day 0.033 ug/1 ---

Heptachlor 0.52 g/day --- 1.04 g/day 0.008 ug/1 ---

Heptachlor epoxide 0.52 g/day --- 1.04 g/day 0.008 ug/1 ---

PCBs 1.0 g/day --- 2.1 g/day 0.016 ug/L ---

0.085 0.0009 2,3, 7 ,8-(TCDD) 0.059 g/day --- g/day ug/L ---

0.020 0.0002 Toxaphene 0.013 g/day ---g/day ug/L ---pH· (9) Not less than 6.5 standard units (S.U.) nor greater than 9.0 S.U.

16 ug/L

6.4 ug/L

0.02 ug/L

110 ug/L

3 ug/L

6.5 ug/L

330 ug/L

3 ug/L

Report

109 ug/L

Report [mg/L]

0.29 ug/L

400 ug/L

0.49 ug/L

0.33 ug/L

0.002 ug/L

0.002 ug/L

0.002 ug/L

0.099 ug/L

0.099 ug/L

0.099 ug/L

0.066 ug/L

0.016 ug/L

0.016 ug/L

0.033 ug/L

0.0013 ug/L

0.0003 ug/L

Permit No. AZ0025607

1x/2 weeks Discrete

24-hour 1x/2 weeks Composite

1x/2 weeks Discrete

24-hour 1x/2 weeks Composite

24-hour 1x/2 weeks Composite

24-hour 1x/2 weeks Composite

24-hour 1x/2 weeks Composite

1x/3 months Discrete

1x/3 months Discrete

24-hour 1x/3 months Composite

1x/2 weeks 24-hour

Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

1x/3 months 24-hour

Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

24-hour 1x/3 months Composite

1x/day Discrete

Footnotes:

(1) Mass results are to be calculated and reported using the following formulas: 1) Mass in kilograms per day= 3.785 xflow in MGD x concentration in mg/L, and 2) mass in grams per day= 3.785 x flow in MGD x concentration in IJg/L.

(2) Testing shall coincide with the Whole Effluent Toxicity Test (WET) samples, if any, taken during that monitoring period as per Part I.C, Table 3 of the permit. See Part IV of the permit.

(3) If discharge is infrequent see Part I.D for minimum effluent characterization monitoring requirements.

(4) Monitoring and reporting required. No limit set at this time.

(5) For purposes of this permit, a "24-hour composite" means a mixture of discrete equal volume aliquots obtained over a period of 24 hours at a frequency of one aliquot per each 0.5 MGD (500,000 gal) discharged.

(6) Both the influent and the effluent shall be monitored.

(7) cfu = colony forming units; "most probable number" (mpn) is considered equivalent for reporting purposes. The monthly average for E. coli is calculated as a geometric mean. A minimum of 4 samples are required in order to report a geometric mean. See the definition for "Monthly or Weekly Average Concentration Limit" in Appendix A.

(8) Sample when chlorine or bromine compounds are used for disinfection. See Part II.A.6 for specific monitoring requirements for chlorine.

(9) pH and TRC shall be measured at the time of sampling and do not require use of a certified laboratory. Measurements shall be obtained in accordance with the applicable method and shall meet all method quality assurance/quality control requirements to be considered valid data.

(1 0) All metals effluent limits are for total recoverable metals, except for Chromium VI, for which the limits listed are dissolved.

(11) Limits listed are based on the average effluent hardness of 150 mg/L as CaC03 . The effluent shall be tested for hardness at the same time that these metal samples are taken. Please see the hardness definition in Appendix A, Part B.

(12) If total chromium exceeds 8 ug/L, the permittees shall conduct sampling for chromium VI for the remainder of the permit. Otherwise, monitoring for chromium VI is not required.

(13) With a detection limit no higher than 100 ug/L, any detection of sulfides shall trigger monthly monitoring for hydrogen sulfide for the remainder of the permit term. Monitoring for hydrogen sulfide is only required if sulfide is detected.

(14) kg/day= kilogram/day; g/day =gram/day, mg/1 =milligram/liter; iJg/L =microgram/liter

(15) See Parts I.C and IV for additional requirements for testing and reporting Whole Effluent Toxicity (WET).

(16) This is the minimum monitoring frequency required when discharging. If additional effluent sampling is conducted when discharging, including all monitoring done as specified in Part V, those effluent monitoring data shall be also be reported on the Discharge Monitoring Reports for that reporting period.

B. Trace Substance Monitoring

The permittees shall monitor discharges from Outfall 001 as specified in Table 2. Monitoring results above the Assessment Levels (ALs) listed below do not constitute a permit violation, but may trigger evaluation of Reasonable Potential (RP) by ADEQ. The permittees shall use an approved analytical method with a Limit of Quantitation (LOQ) lower than the AL values as specified in Part II.A.4.

TABLE 2: Trace Substance Monitoring Requirements

Ammonia (5) (5) mg/L 2x/month Discrete

Temperature (5) (6) Report (0C) (5) 2x/month Discrete pH (5)(6) Report (S.U.) (5) 2x/month Discrete

Oil and Grease 10 mg/L 15 mg/L 1x/3 months Discrete

Arsenic 120 250 1x/3 months 24-hr. Composite

Iron 820 1640 1x/3 months 24-hr. Composite

Benzidiene 0.005 0.01 1x/3 months 24-hr. Composite

Benz(a)anthracene 0.1 0.2 1x/3 months 24-hr. Composite

Benzo(k)fluoranthene (PAH) 1.9 2.8 1x/3 months 24-hr. Composite

3,4-benzofluoranthene 1.9 2.8 1x/3 months 24-hr. Composite

Bis(2-chloroethyl) ether 1.0 1.5 1x/3 months 24-hr. Composite p-Bromodiphyenyl ether 11.5 23.0 1x/3 months 24-hr. Composite

Chrysene 19.0 27.7 1x/3 months 24-hr. Composite

Dibenz(ah)anthracene (PAH) 1.9 2.8 1x/3 months 24-hr. Composite

Dibutyl Phthalate 28.7 57.5 1x/3 months 24-hr. Composite

1 ,4-0ichlorobenzene 640

3,3-0ichlorbenzidiene 3.0

1 ,2-0iphenylhydrazine 1.8

Hexachlorobutadiene 6.7 lndeno (1 ,2,3-cd) Pyrene 1.9

N-nitrosodimethyl-amine 0.03

Phenanthrene 5.2 p-Chloro-m-cresol 3.9

2,4-0initrophenol 7.5

4,6-0initro-o-cresol 19.7

2,4,6-Trichlorophenol 20.5

Alachlor 139

Aldrin 3.0

Endrin 0.03

Footnotes:

4.4

2.6

13.5

2.8

0.04

10.4

7.7

15.1

39.4

41.1

4.4

0.07

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

1x/3 months

Permit No. AZ0025607

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

24-hr. Composite

(1) Concentration values are calculated based on Arizona Water Quality Standards. Monitoring and reporting required.

(2) Testing shall coincide with the Whole Effluent Toxicity Test (WET) samples, if any, taken during that monitoring period as per Part I.C, Table 3 of the permit. See Part IV of the permit.

(3) If discharge is infrequent see Part 1.0 for minimum effluent characterization monitoring requirements.

(4) All metals assessment levels are for total recoverable metals.

(5) The ammonia assessment level is dependent on pH and temperature. In addition to reporting the ammonia values on the OMRs the ammonia data log shall also be completed including values of pH and temperature at the time the ammonia sample is taken. See Part 11.8 of the permit.

(6) pH and temperature shall be measured at the time of sampling and do not require use of a certified laboratory. Measurements shall be obtained in accordance with the applicable method and shall meet all method quality assurance/quality control requirements to be considered valid data.

C. Whole Effluent Toxicity Monitoring

The permittees shall limit and monitor discharges from Outfall 001 for Whole Effluent Toxicity (WET) as specified in Table 3 which follows. If toxicity is detected above a specified limit or action level, the permittees shall perform follow-up testing and, as applicable, follow the TIE/TRE processes in Part IV.E of the permit.

Chronic Toxicity Pseudokirchneriel/a subcapitata (Green algae) (5)

Chronic Toxicity Pimephales promelas (Fathead minnow)

Chronic Toxicity Ceriodaphnia dubia (Water flea)

Footnotes:

TABLE 3: WET Testing

1.6 TUc 1.0 TUc

1.6 TUc 1.0 TUc

1.6 TUc 1.0 TUc

(1) See Part IV for additional requirements for testing and reporting Whole Effluent Toxicity (WET).

1x/3 months 24-hr Composite

1x/3 months 24-hr Composite

1x/3 months 24-hr Composite

(2) Since completion of one chronic WET test takes more than 24 hours, the daily maximum is considered to be the highest allowable test result.

(3) Any exceedance of these values requires the permittees to conduct follow-up testing. See Part IV.E of th.e permit for details.

(4) If discharge is infrequent see Part 1.0 for minimum effluent characterization monitoring requirements.

(5) Formerly known as Selenestrum capricornutum or Raphidoce/is subcapitata.

D. Effluent Characterization Testing

Pennit No. AZ0025607

The permittees shall monitor to characterize the facility's effluent for the parameters listed in Tables 4.a- f, whether discharging or not. When the facility discharges, monitoring is to be conducted at the frequency indicated in Tables 1 through 3. No limits orALs are established, but the LOQ shall be low enough to allow comparison of the results to the applicable surface water quality standards (SWQS).

If a LOQ below the SWQS cannot be achieved, then the permittees shall use the method expected to achieve the lowest LOQ, as defined in Appendix A of this permit. Samples are to be representative of any seasonal variation in the discharge:

TABLE 4.a: Effluent Characterization Testing- General Chemistry and Microbiology

Ammonia (as N) (2) mg/L 1x/3months Discrete

Dissolved Oxygen mg/L 1x/3months 24-hour Composite

Chlorine, Total Residual (TRC) (4)(5) ug/L 1x/3months Discrete

Dissolved Oxygen (5) mg/L 1x/3months Discrete

E. coli cfu/1 00 mL (3) 1x/3months Discrete

Nitrate/Nitrite (as N) mg/L 1x/3months 24-hour Composite

Nitrogen, Total Kjeldahl (TKN) mg/L 1x/3months 24-hour Composite

Oil and Grease mg/L 1x/3months Discrete pH (5) S.U. 1x/3months Discrete

Phosphorus mg/L 1x/3months 24-hour Composite

Temperature (5) •celsius 1x/3months Discrete

Total Dissolved Solids (TDS) mg/L 24-hour Composite

Total Suspended Solids (TSS) mg/L 1x/3months 24-hour Composite

Footnotes:

(1) If more frequent monitoring of any of these parameters is required by another part of this permit, those sampling results may be used to satisfy

Table 4.a. requirements.

(2) When sampling for ammonia, temperature and pH shall be determined concurrently and the results recorded on the Ammonia Data Log provided in Appendix C. See Part 11.8 for reporting requirements.

(3) cfu = colony forming units; "most probable number" (mpn) is considered equivalent for reporting purposes.

(4) Sample when chlorine or bromine compounds are used for disinfection. See Part II.A.6 for specific monitoring requirements for chlorine.

(5) Temperature, pH, TRC and dissolved oxygen shall be measured at the time of sampling and do not require use of a certified laboratory. See Part

II.A.6 for methods of analyses for chlorine. Measurements shall be obtained in accordance with the applicable method and shall meet all method quality assurance/quality control requirements to be considered valid data.

TABLE 4.b: Effluent Characterization Testing- Selected Metals, Trace Substances and WET

Antimony ug/L 1x/3 months 24-hour Composite

Arsenic ug/L 1x/3 months 24-hour Composite

Beryllium ug/L 1x/3 months 24-hour Composite

Cadmium ug/L 1x/3 months 24-hour Composite

Chromium ug/L 1x/3 months 24-hour Composite

Chromium VI ug/L 1x/3 months Discrete

Copper ug/L 1x/3 months 24-hour Composite

Iron ug/L 1x/3 months 24-hour Composite

Lead ug/L 1x/3 months 24-hour Composite

Mercury ug/L 1x/3 months Discrete

Nickel ug/L 1x/3 months 24-hour Composite

Selenium ug/L 1x/3 months 24-hour Composite

Silver ug/L 1x/3 months 24-hour Composite

Thallium ug/L 1x/3 months 24-hour Composite

Zinc ug/L 1x/3 months 24-hour Composite

Hardness mg/L 1x/3 months 24-hour Composite

Cyanide ug/L 1x/3 months Discrete

Whole Effluent Toxicity-chronic (all TUc 4x/permit term 24-hour Composite 3 species) (3)

Footnotes:

(1) All metals analyses shall be for total recoverable metals, except Chromium VI, which is dissolved.

(2) If more frequent monitoring of any of these parameters is required by another part of this permit, those sampling results may be used to satisfy

Table 4.b. requirements.

(3) If chronic toxicity is detected above the Action Levels specified in Table 4 or an acute test fails, the permittees shall perform follow-up testing and, as applicable, follow the TIE/TRE processes in Part IV.E of the permit, whether discharging or not. See Part IV for additional information on requirements for testing and reporting Whole Effluent Toxicity (WET).

(4) Four tests shall be conducted during the permit term, 1x/year in years 1, 2, 3 & 4 of permit term.

TABLE 4.c: Effluent Characterization Testing- Selected Volatile Organic Compounds f~--t~~k~li'/''i' , ,; :':.?''Mwi .;~·.~¥8~~ ·;:;· ·;~ Acrolein ug/L 3x/permit term Discrete

Acrylonitrile ug/L 3x/permit term Discrete

Benzene ug/L 3x/permit term Discrete

Bromoform ug/L 3x/permit term Discrete

Carbon tetrachloride ug/L 3x/permit term Discrete

Chlorobenzene ug/L 3x/permit term Discrete

Chlorodibromomethane ug/L 3x/permit term Discrete

Chloroethane ug/L 3x/permit term Discrete

2-chloroethylvinyl ether ug/L 3x/permit term Discrete

Chloroform ug/L 3x/permit term Discrete

Dichlorobromomethane ug/L 3x/permit term Discrete

1, 1-dichloroethane ug/L 3x/permit term Discrete

1 ,2-dichloroethane ug/L 3x/permit term Discrete

Trans-1 ,2-dichloroethylene ug/L 3x/permit term Discrete

1, 1-dichloroethylene ug/L 3x/permit term Discrete

1 ,2-dichloropropane ug/L 3x/permit term Discrete

1 ,3-dichloropropylene ug/L 3x/permit term Discrete

Ethylbenzene ug/L 3x/permit term Discrete

Methyl bromide ug/L 3x/permit term Discrete

Methyl chloride ug/L 3x/permit term Discrete

Methylene chloride ug/L 3x/permit term Discrete

1,1 ,2,2-tetrachloroethane ug/L 3x/permit term Discrete

Tetrachloroethylene ug/L 3x/permit term Discrete

Toluene ug/L 3x/permit term Discrete

1,1, 1-trichloroethane ug/L 3x/permit term Discrete

1,1 ,2-trichloroethane ug/L 3x/permit term Discrete

Trichloroethylene ug/L 3x/permit term Discrete

Vinyl chloride ug/L 3x/permit term Discrete

Footnotes

(1) 3x/permit term means 1x/year in years of 2, 3, 4, of permit term

TABLE 4.d: Effluent Characterization Testing - Selected Acid-extractable Compounds

····i::'!'~M~bft~~~:Q·,r6!s~ir~m~q, .. ~·i:?~~P6W~ri69IBt~~P~fi¢Y:i11Y': 5~rt';'

P-chloro-m-cresol ug/L 3x/permit term 24-hour Composite

2-chlorophenol ug/L 3x/permit term 24-hour Composite

2,4-dichlorophenol ug/L 3x/permit term 24-hour Composite

2,4-dimethylphenol ug/L 3x/permit term 24-hour Composite

4,6-dinitro-o-cresol ug/L 3x/permit term 24-hour Composite

2,4-dinitrophenol ug/L 3x/permit term 24-hour Composite

2-nitrophenol ug/L 3x/permit term 24-hour Composite

4-nitrophenol ug/L 3x/permit term 24-hour Composite

Pentachlorophenol ug/L 3x/permit term 24-hour Composite

Phenol ug/L 3x/permit term 24-hour Composite

2,4,6- trichlorophenol ug/L 3x/permit term 24-hour Composite

Footnotes

(1) 3x/permit term means 1x/year in years of 2, 3, 4, of permit term

TABLE 4.e: Effluent Characterization Testing - Selected Base-neutral Compounds

Acenaphthene ug/L 3x/permit term 24-hour Composite

Acenaphthylene ug/L 3x/permit term 24-hour Composite

Anthracene ug/L 3x/permit term 24-hour Composite

Benzidine ug/L 3x/permit term 24-hour Composite

Benzo(a)anthracene ug/L 3x/permit term 24-hour Composite

Benzo(a)pyrene ug/L 3x/permit term 24-hour Composite

3,4 benzofluoranthene ug/L 3x/permit term 24-hour Composite

Benzo(ghi)perylene ug/L 3x/permit term 24-hour Composite

Benzo(k)fluoranthene ug/L 3x/permit term 24-hour Composite

Bis (2-chloroethoxy) methane ug/L 3x/permit term 24-hour Composite

Bis (2-chloroethyl) ether ug/L 3x/permit term 24-hour Composite

Bis(2-chloroisopropyl) ether ug/L 3x/permit term 24-hour Composite

Bis (2-ethylhexyl) phthalate ug/L 3x/permit term 24-hour Composite

4-bromophenyl phenyl ether ug/L 3x/permit term 24-hour Composite

Butyl benzyl phthalate ug/L 3x/permit term 24-hour Composite

2-chloronaphthalene ug/L 3x/permit term 24-hour Composite

4-chlorophenyl phenyl ether ug/L 3x/permit term 24-hour Composite

Chrysene ug/L

Di-n-butyl phthalate ug/L

Di-n-octyl phthalate ug/L

Dibenzo{a,h)anthracene ug/L

1 ,2-dichlorobenzene ug/L

1 ,3-dichlorobenzene ug/L

1 ,4-dichlorobenzene ug/L

3,3-dichlorobenzidine ug/L

Diethyl phthalate ug/L

Dimethyl phthalate ug/L

2,4-dinitrotoluene ug/L

2,6-dinitrotoluene ug/L

1 ,2-diphenylhydrazine ug/L

Fluoranthene ug/L

Fluorene ug/L

Hexachlorobenzene ug/L

Hexachlorobutadiene ug/L

Hexachlorocyclopentadiene ug/L

Hexachloroethane ug/L lndeno(1 ,2,3-cd)pyrene ug/L lsophorone ug/L

Naphthalene ug/L

Nitrobenzene ug/L

N-nitrosodi-n-propylamine ug/L

N-nitrosodimethylamine ug/L

N-nitrosodiphenylamine ug/L

Phenanthrene ug/L

Pyrene ug/L

1 ,2,4-trichlorobenzene ug/L

Foot note

(1) 3x/permit term means 1x/year in years of 2, 3, 4, of permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

3x/permit term

Permit No. AZ0025607

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

TABLE 4.f: Effluent Characteristic Testing Based on Designated Uses

Additional Parameters from the Arizona Surface Water Quality Standards, Appendix A, Table 1

Alachlor (1) ug/L 2x/permit term 24-hour Composite

Aldrin ug/L 3x/permit term 24-hour Composite

Asbestos ug/L 3x/permit term 24-hour Composite

Atrazine (1) ug/L 2x/permit term 24-hour Composite

Barium

Boron

Carbofuran (Furadan) (1)

Chlordane

1 ,2-cis-Dichloroethylene

Chlorpyrifos

Dalapon (1)

1 ,2-Dibromo-3-chloropropane (DBCP)

1 ,2-Dibromoethane (EDB) Ethylene dibromide

4,4-DDD (p,p,- Dichlorodiphenyldicholoroethane)

4,4-DDE (p,p- Dichlorodiphenyldichloroethylene)

4,4-DDT ((p,p- Dichlorodiphenyltrichloroethane)

2,4-Dichlorophenoxyacetic acid (2,4-D) (1)

Dieldrin

Di (2-ethylhexyl) adipate

Dinoseb (1)

Diquat (1)

Endosulfan sulfate

Endosulfan (Total)

Endothall (1)

Endrin

Endrin aldehyde

Fluoride

Glyphosate (1)

Guthion

Heptachlor

Heptachlor epoxide

Hexachlorocyclohexane alpha (Aipha-BHC)

Hexachlorocyclohexane beta

Hexachlorocyclohexane delta

Hexachlorocyclohexane gamma (lindane)

Hydrogen Sulfide (2)

Iron

Malathion

Manganese

Methoxychlor (1)

Mirex (3)

Oxamyl (1)

Parathion

Paraquat ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term

Permit No. AZ0025607 Page 13 of56

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

Discrete

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

Permethrin (3)

Pichloram (1)

Polychlorinated biphenyls (PCBs)

Simazine (1)

Styrene

2 ,3, 7,8-Tetrach lorodibenzo-p-dioxin

Toxaphene

2-(2,4,5,-Trichlorophenoxy) Proprionic Acid (1)

Total Trihalomethanes

Tributyltin (3)

Uranium

Xylenes

Footnotes:

ug/L 2x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 2x/permit term ug/L 3x/permit term ug/L 3x/permit term

Permit No. AZ0025607

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

24-hour Composite

(1) There may be no approved wastewater methods for analyses of these parameters in 40 CFR 136. As such, 500 series drinking water Methods may be used; in this case, a 1 OX sample dilution is acceptable for these parameters. Appropriate data qualifiers are to be used.

(2) The permittees may initially monitor for sulfide instead of hydrogen sulfide. The limit of quantification shall be no higher than 100 ug/L, and any detection of sulfides shall trigger monitoring for hydrogen sulfide for the reminder of the permit term.

(3) If there are no ADHS-certified methods for these parameters, monitoring is not required.

(4) 2x/permit term means 1x/year in years of 2, 4, of permit term.

(5) 3x/permit term means 1x/year in years of 2, 3, 4, of permit term

E. The discharge shall be free from pollutants in amounts or combinations that:

1. Settle to form bottom deposits that inhibit or prohibit the habitation, growth or propagation of aquatic life;

2. Cause objectionable odor in the area in which the surface water is located;

3. Cause off-flavor in aquatic organisms;

4. Are toxic to humans, animals, plants or other organisms;

5. Cause the growth of algae or aquatic plants that inhibit or prohibit the habitation, growth or propagation of other aquatic life or that impair recreational uses;

F. The discharge shall be free from oil, grease and other pollutants that float as debris, foam, or scum; or that cause a film or iridescent appearance on the surface of the water; or that cause a deposit on a shoreline, bank or aquatic vegetation.

G. The discharge shall not cause an increase in the ambient water temperature of more than 3.0 degrees Celsius.

H. The discharge shall not cause the dissolved oxygen concentration in the receiving water to fall below 3 mg/L from 3 hours after sunrise to sunset and 1 mg/1 from sunset to 3 hours after sunrise, unless the percent saturation of oxygen remains equal to or greater than 90%.

I. Samples taken for the monitoring requirements specified in Part I shall be collected at the following locations:

1. Influent samples shall be taken after the last addition to the collection system and prior to the first treatment process.

2. Effluent samples shall be taken downstream from the last treatment process and prior to mixing with the receiving waters.

PART II. MONITORING AND REPORTING

A. Sample Collection and Analysis

1. The permittees are responsible for the quality and accuracy of all data required under this permit.

2. Quality Assurance (QA) Manual

The permittees shall keep a QA Manual on site that describes the sample collection and analyses processes. If the permittees collect samples or conducts sample analyses in house, the permittees shall develop a QA Manual that addresses these activities. If a third party collects and/or analyzes samples on behalf of the permittees, the permittees shall obtain a copy of the applicable QA procedures. The QA Manual shall be available for review by ADEQ upon request. The QA Manual shall be updated as necessary to reflect current conditions, and shall describe the following:

a. Project Management, including:

• Purpose of sample collection and sample frequency;

• When and where samples will be collected;

• How samples will be collected;

• Who will collect samples and their qualifications;

• Laboratory( s) that will perform analyses;

• Any field tests to be conducted (detail methods and specify equipment, including a description of any needed calibrations); and

• Pollutants or analytes being measured and for each, the permit-specific limits, Assessment Levels, or thresholds, (e.g. the associated detection limits needed.)

b. Sample collection procedures including

• Equipment to be used;

• Type and number of samples to be collected including QA/QC samples (i.e., background samples, duplicates, and equipment or field blanks);

• Types, sizes, and number of sample bottles needed;

• Preservatives and holding times for the samples (see methods under 40 CPR 136 or

9 A.A. C. 14, Article 6 or any condition within this permit that specifies a particular test method); and

• Chain of custody procedures.

c. Specify approved analytical method(s) to be used and include;

• Limits ofDetection (LOD) and Limits ofQuantitation (LOQs);

• Required quality control (QC) results to be reported (e.g., matrix spike recoveries, duplicate relative percent differences, blank contamination, laboratory control sample recoveries, surrogate spike recoveries, etc.) and acceptance criteria; and

• Corrective actions to be taken by the permittees or the laboratory as a result of problems identified during QC checks.

d. How the permittees will perform data review; report results to ADEQ; resolve data quality issues; and identify limitations on the use of the data

3. Sample collection, preservation and handling shall be performed as described in 40 CPR 136 including the referenced Edition of Standard Methods for the Examination of Water and Wastewater, or by procedures referenced in A.R.S Title 9, Chapter 14 of the Arizona Department of Health Services (ADHS) Laboratory Licensure rules. The permittees shall outline the proper procedures in the QA Manual, and samples taken for this permit shall conform with these procedures whether collection and handling is performed directly by the permittees or contracted to a third-party.

4. Analytical requirements

a. The permittees shall use a laboratory licensed by the ADHS Office of Laboratory Licensure and Certification that has demonstrated proficiency within the last 12 months under R9-14-609, for each parameter to be sampled under this permit. However, this requirement does not apply to parameters which require analysis at the time of sample collection as long as the testing methods used are approved by ADHS and ADEQ. (These parameters may include flow, dissolved oxygen, pH, temperature, and total residual chlorine.)

b. The permittees shall utilize analytical methods specified in this permit. If no test procedure is specified, the permittees shall analyze the pollutant using:

1. A test procedure listed in 40 CPR 136 which is also approved under A.A. C. R9-14- 610;

11. An alternative test procedure approved by EPA as provided in 40 CPR 136 and which is also approved under A.A.C. R9-14-610;

111. A test procedure listed in 40 CPR 136, with modifications allowed by EPA or approved as a method alteration by ADHS under A.A.C. R9-14-610(C); or

1v. If no test procedure for a pollutant is available under (3)(b )(i) through (3)(b )(iii) above, any Method approved under A.A.C. R9-14-610(C) for wastewater may be used, except the use of field kits is not allowed unless otherwise specified in this permit. If there is no approved wastewater method for a parameter, any other method identified in 9 A.A.C. 14, Article 6 that will achieve appropriate detection and reporting limits may be used for analyses.

c. For results to be considered valid, all analytical work, including those tests conducted by the permittees at the time of sampling (see Part II.A.4.a), shall meet quality control standards specified in the approved methods.

d. The permittees shall use analytical methods with a Limit of Quantitation (LOQ) that is lower than the effluent limitations, Assessment Levels, Action Levels, or water quality criteria specified in this permit. If all methods have LOQs higher than applicable water quality criteria, the Permittees shall use the approved analytical method with the lowest

LOQ.

e. The permittees shall use a standard calibration curve when applicable to the method, where the lowest standard point is equal to or less than the LOQ.

f. If requested, the permittees shall participate in the annual NPDES DMR/QA study and submit the results of this study to ADEQ and ADHS for all laboratories used in monitoring compliance with this permit.

5. Mercury Monitoring

The permittees shall use a "clean hands/dirty hands" sampling technique such as EPA Method 1669 and an ADHS-certified low-level mercury analytical method if necessary to achieve a reporting limit at or below the effluent limitations or assessment levels for mercury as specified in this permit.

6. Chlorine Monitoring

Because of the short holding time for chlorine, effluent samples may be analyzed on-site using Hach Method No. 10014. Other methods are also acceptable for chlorine if the Method has a LOQ lower than discharge limits specified in this permit. Method 8167 may be used for the ambient monitoring required in Part V .E if chlorine is not used in the effluent treatment process at the plant.

7. Metals Analyses

In accordance with 40 CPR 122.45( c), all effluent metals concentrations, with the exception of chromium VI, shall be measured as "total recoverable metals". Discharge Limits and Assessment Levels in this permit are for total metals, except for Chromium VI for which the levels listed are dissolved.

B. Reporting of Monitoring Results

1. The permittees shall report monitoring results on Discharge Monitoring Report (DMR) forms supplied by ADEQ, to the extent that the results may be entered on the forms. The permittees shall submit results of all monitoring required by this permit in a format that will allow direct comparison with the limitations and requirements of this permit. If no discharge occurs during a reporting period, the permittees shall specify "No discharge" on the DMR. The results of all discharge analyses conducted during the monitoring period shall be included in calculations of the monthly average and daily maximums reported on the DMRs if the analyses were by methods specified in Part II.A above.

2. D MRs and attachments are to be submitted (see Appendix A- definitions) by the 28th day of the month following the end of a monitoring period. For example, if the monitoring period ends

January 31 5 \ the permittees shall submit the DMR by February 281

h. The permittees shall submit original copies of these and all other reports required in this Part, signed by an authorized representative, to ADEQ at the following address:

Arizona Department of Environmental Quality Data Unit, Water Quality Compliance Section 1110 W. Washington St.

Phoenix, AZ 85007 or fax to (602) 771-4505.

The original laboratory reports shall be maintained at the NIWTP and made available upon request. Electronic copies of the laboratory reports shall be submitted to ADEQ when the renewal application is submitted.

3. Unless otherwise specified, the permittees shall submit all other reports and plans required by this permit to ADEQ via e-mail at AZPDES@azdeq.gov or by mail at the following address:

Arizona Department of Environmental Quality Surface Water Permits Unit, Mailcode 5415A-1 1110 W. Washington St.

Phoenix, AZ 85007

4. When sampling for ammonia, the temperature and pH of the sample shall be recorded at the time of sample collection. Results for all three parameters shall be recorded on the Ammonia Data Log provided in Appendix B, as well as on DMRs. The ammonia data log shall be submitted to ADEQ annually to the address in Part II.B.2, above.

5. If requested to participate, the permittees shall submit results ofthe NPDES DMR/QA study to ADEQ and ADHS for all laboratories used in monitoring compliance with this permit by December 31st of each year. The permittees shall also participate in the DMR-QA study for any DMR-QA parameters that the permittees analyzes (typically pH and chlorine) and submit the results along with the laboratory results. The results shall be submitted to the following addresses:

Arizona Department of Environmental Quality Surface Water Permits Unit, Mailcode 5415A-1 1110 W. Washington St.

Phoenix, AZ 85007 (or via e-mail to AZPDES@azdeq.gov)

Arizona Department of Health Services Attn: DMRQA Coordinator 250 N 17th Avenue Phoenix, AZ 85007

6. For the purposes of reporting, the permittees shall use the Limit of Quantitation.

7. For parameters with Daily Maximum Limits or Daily Maximum Assessment Levels in this permit, the permittees shall review the results of all samples collected during the reporting period and report as follows:

For Daily Maximum Limits/Assessment Levels

' ··.<· <. :'·::c. ' ' ' : '

Permit No. AZ0025607

T~e P:ermi~fii~~~~l.l ~~pC)rt()n t~e.

·•' . · •:-.DMR. .... •

When the maximum value of any analytical result is greater than the LOQ The maximum value of all analytical results

When the maximum value detected is greater than or equal to the laboratory's LOD The numeric result with E4 or E8 flag but less than the LOQ (1) as applicable (AZ qualifier)

When the maximum value is less than the laboratory's LOD (2) "< LOD"

(specify the LOD level, i.e.,< 10 ug/L)

Footnotes:

(1) Not Quantifiable

(2) Below Detection

8. For parameters with Monthly Average Limits or Monthly Average Assessment Levels in this permit, the permittees shall review the results of all samples collected during the reporting period and report:

If only one sample is collected during the When the value detected is greater than the LOQ The analytical result reporting period (monthly, quarterly, 1-----------------1------------u annually, etc.) When the value detected is greater than or equal to the laboratory's LOD, but less than the LOQ (In this case, the sample result is the

The numeric result with E4 or E8 flag as applicable (AZ qualifier) monthly average.) 1-----------------1------------ll When the value is less than the laboratory's LOD "< LOD"

If more than one sample is collected during the reporting period

All samples collected in the same calendar month shall be averaged.

$ When all results are greater than the LOQ, all values are averaged

$ If some results are < LOQ, use the LOD value in the averaging

$ Use '0' for values less than the LOD

(specify the LOD level, i.e., < 10ug/L)

The highest monthly average which occurred during the reporting period

9. For all field testing, or if the information below is not included on the laboratory reports required by Part II.B.2, the permittee shall attach a bench sheet or similar documentation to each DMR that includes, for all analytical results during the reporting period:

a. the analytical result,

b. the number or title of the approved analytical method, preparation and analytical procedure utilized by the laboratory, and LOD and the LOQ for the analytical method for the pollutant, and

c. any applicable data qualifiers using the most current revision of the Arizona Data Qualifiers (available on line at http:/ /www.azdhs.gov/lab/license/resources/resources.htm).

C. Twenty-four Hour Reporting of Noncompliance

Page20 of 56

The permittees shall orally report any noncompliance which may endanger the environment or human health within 24 hours from the time the permittees becomes aware of the event to:

ADEQ 24 hour hotline at (602) 771-2330 (Phoenix, AZ, statewide coverage)

The permittees shall also notify the ADEQ Southern Regional Office at (520) 628-6724 by phone call or voice mail by 9 a.m. on the first business day following the noncompliance. The permittees shall also notify the ADEQ Water Quality Compliance Section in writing within 5 days of the noncompliance event. The permittees shall include in the written notification: a description of the noncompliance and its cause; the period of noncompliance, including dates and times, and, if the noncompliance has not been corrected, the time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.

D. Monitoring Records

The permittees shall retain records of the following monitoring information:

1. Date, exact location and time of sampling or measurements performed, preservatives used;

2. Individual(s) who performed the sampling or measurements;

3. Date(s) the analyses were performed;

4. Laboratory(s) which performed the analyses;

5. Analytical techniques or methods used;

6. Chain of custody forms;

7. Any comments, case narrative or summary of results produced by the laboratory. These comments should identify and discuss QA/QC analyses performed concurrently during sample analyses and should specify whether analyses met project requirements and 40 CFR 136. If results include information on initial and continuing calibration, surrogate analyses, blanks, duplicates, laboratory control samples, matrix spike and matrix spike duplicate results, sample receipt condition, or holding times and preservation, these records shall also be retained.

8. Summary of data interpretation and any corrective action taken by the permittees.

PART III. BIOSOLIDS/ SEWAGE SLUDGE REQUIREMENTS

Note: "Biosolids" refers to non-hazardous sewage sludge as defined in 40 CPR 503.9 and Arizona Administrative Code (A.A.C.) R18-9-1001.7. Sewage sludge that is hazardous as defined in 40 CPR 261 shall be disposed of in accordance with the Resource Conservation and Recovery Act (RCRA). Sludge with PCB (polychlorinated biphenyls) levels greater than 50 mg/kg shall be disposed of in accordance with 40

CPR 761.

A. Specific Use or Disposal Requirements

All biosolids prepared at this facility shall be disposed in a landfill meeting the criteria in 40 CPR

258. If the permittees want to use or dispose of biosolids by another option, the permittees shall submit the proposed alternative plan for approval to ADEQ and US EPA at least 90 days prior to the planned start date for this alternative use or disposal practice. The plan shall include the following:

1. data from at least three (3) sampling events within the previous year for the metals listed in Section J .1.a of this Part,

2. data from at least one (1) hazardous waste determination as described in Section 1.5 ofthis Part, and

3. the levels of pathogen reduction and vector attraction reduction that will be achieved, if required for the selected option, and the methods that will be used to achieve those levels.

The permittees shall notify ADEQ and US EPA at least 90 days prior to transferring any biosolids to another preparer for further treatment.

B. General Use or Disposal Requirements and Biosolids Preparer's Responsibility

All biosolids/sewage sludge generated and/or prepared at this facility shall be used or disposed of in compliance with the applicable portions of 18 A.A.C. 9, Article 10 and

1. 40 CPR 503 Subpart C: for biosolids that are placed on the land (surface disposal) for the purpose of disposal (dedicated land disposal sites, lagoons, or mono fills).

2. 40 CPR 258: for biosolids disposed of in municipal solid waste landfills; and

3. 40 CPR 257: for all biosolids use and disposal practices not covered under 40 CPR 258 or 503.

The permittees are responsible for ensuring that all biosolids/sewage sludge produced or accepted at this facility are used or disposed of in accordance with 40 CPR 503 Subpart C, 257, 258 and 18 A.A.C. 9, Article 10, as applicable, whether the permittees use or dispose of the biosolids itself or transfers them to another party for further treatment, use, or disposal. The permittees are responsible for informing any subsequent transporters, preparers, applicators, and disposers of the requirements that they shall meet under 18 A.A.C. 9, Article 10.

C. Duty to Mitigate

The permittees shall take all reasonable steps to prevent or minimize any biosolids use or disposal which has a likelihood of adversely affecting human health or the environment.

D. General Requirements

The permittees shall ensure that:

1. No biosolids generated and/or prepared at this facility enter wetlands or other waters of the United States;

2. Biosolids treatment, storage, use or disposal does not contaminate surface water or groundwater.

(Note: Surface disposal or land treatment sites for biosolids shall be permitted under the aquifer protection program per A.A. C. Rl8-9-1002(E)(2) and may also require a separate AZPDES permit. The permittees shall ensure a site has appropriate permits before directing biosolids to a surface disposal or land treatment site.)

3. Biosolids treatment, storage, and use or disposal does not create a nuisance such as malodorous smell or attraction of flies or other disease carrying vectors.

4. Biosolids generated and/or prepared at this facility are not applied to the land or placed on a surface disposal site if the biosolids are likely to adversely affect a threatened or endangered species as listed under section 4 of the Endangered Species Act (16 U.S.C 1533), or its designated critical habitat as defined in 16 U.S.C. 1532;

5. Land application sites receiving bulk biosolids generated and/or prepared at this facility are registered with ADEQ in accordance with A.A.C. R18-9-1004; and

6. No biosolids generated and/or prepared at this facility are incinerated in the state of Arizona.

E. Biosolids Storage

1. Biosolids shall not be stored on land for over two years from the time they are generated unless a permit for surface disposal is obtained per 18 A.A. C. 9, Article 10 and 40 CFR 503 Subpart C, or written notification has been submitted to the ADEQ Biosolids Coordinator with the information in 40 CFR 503.20(b) that sufficiently demonstrates the need for longer temporary storage.

2. For the protection of public health, biosolids shall not be stored uncovered on-site or off-site unless the permittees can demonstrate that prior to placement in storage:

a. Biosolids meet Class A orB pathogen reduction requirements established in A.A. C. R18- 9-1 006(D) or (E), and

b. Biosolids meet one of the vector attraction reduction alternatives in A.A.C. R18-9-1010 subsections (A)(l) through (A)(8).

Page23 of56

c. If the…