Document bB4Kd6GOx8p8jngbjvJ2Oxk83
United States Environmental Protection Agency Region 4 Enforcement and Compliance Assurance Division Water Enforcement Branch 61 Forsyth Street, SW Atlanta, Georgia 30303
Compliance Evaluation Inspection Report Project No. CV-TN0020885 -101222 Oliver Springs STP 435 Joel Road Oliver Springs, Tennessee, 37840 NPDES Permit Number: TN0020885 Date of Inspection: October 12, 2022
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Title and Approval Sheet Title: Compliance Evaluation Inspection Town of Oliver Springs, Oliver Springs STP Approving Official:
Digitally signed by JAIRO
JAIRO CASTILLO Date: 2022.12.09 15:59:40 CASTILLO _________________-0_5'_00_' ____________ Jairo Castillo, P.E., Chief Wastewater Enforcement Section Water Enforcement Branch Inspector:
Digitally signed by DENNIS
DENNIS SAYRE Date: 2022.12.12 06:38:52 SAYRE _________________-0_5'0_0_' ____________ Dennis Sayre, Environmental Engineer Wastewater Enforcement Section Water Enforcement Branch
1
Table of Contents
1. Introduction.................................................................................................................................... 1 2. Participants.................................................................................................................................... 1 3. Facility Description....................................................................................................................... 1 4. Inspections Procedures.................................................................................................................. 2 5. Findings & Conclusions................................................................................................................ 2
A. Permit Review......................................................................................................................... 2 B. Records and Reports ................................................................................................................. 2 C. Flow Measurement ................................................................................................................... 3 D. Sampling................................................................................................................................... 3 E. Site Visit (Operation and Maintenance) ................................................................................... 4 F. Effluent and Receiving Waters ................................................................................................. 5 6. Sludge Handling............................................................................................................................ 6 7. Discussion .................................................................................................................................... 6 Appendix A. List of effluent violations. ............................................................................................. I
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
1. Introduction
On October 12, 2022, representatives of the United States Environmental Protection Agency, Region 4 and Tennessee Department of Environment and Conservation (TDEC) conducted a Compliance Evaluation Inspection (CEI) on the Oliver Springs Sewage Treatment Plant (STP), owned and operated by the Town of Oliver Springs (Town). The STP is located at 435 Joel Road Oliver Springs, Tennessee. The inspection was conducted under the authority of Section 308 of the Clean Water Act (CWA), as amended. This report provides a summary of the inspection.
2. Participants
Name Dennis Sayre Sarah Snyder
Robert Ramsey
Thomas McCormick Travis Thrasher
Position EPA Inspector TDEC Inspector Water Resources/Facilities Manager, Knoxville Field Office City Manager STP Lead Operator
Number 404-562-9756 865-809-5086
865-203-3523
865-435-7722 865-426-9476
3. Facility Description
The STP is an Oxidation Ditch type of activated sludge wastewater treatment system with an average design flow of 0.74 million gallons per day (MGD). The STP consists of an equalization (EQ) basin, head works with a vortex grit and solids removal device, a primary clarifier, one Oxidation Ditch with variable speed propeller mixers, two secondary clarifiers, a tertiary filtration system, chlorine contact chambers with two independent flow paths, a step aerator, and related appurtenances. Disinfection and dechlorination is achieved using chlorine gas and sodium bisulfate.
Figure 1: Aerial Display of the STP 1
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
4. Inspections Procedures
The overall objective of this CEI was to evaluate the condition and operational performance of the STP and the Town's self-monitoring program and to offer compliance assistance as needed. Specific tasks included an opening conference, conducting interviews with STP staff, review of Discharge Monitoring Reports (DMRs) and other STP records, conducting a site visit throughout the STP, and a closing conference.
5. Findings & Conclusions
The Town has been in Significant Non-Compliance (SNC) for 8 of the past 12 calendar quarters, primarily due to Ammonia (as Nitrogen) (NH3-N) and Total Residual Chlorine (TRC) exceedances. Of note, the Town has been in SNC for one of the past 4 quarters. The Town has also been in non-compliance with several other permit effluent limits as noted Appendix 1, which includes exceedances in E. coli, Total Nitrogen (TN), Total Phosphorus (TP), Total Suspended Solids (percent removal). The Town also reported several wet weather sanitary sewer overflows (SSOs).
The Town was issued a TDEC Commissioner's Order (WPC14-002) in July 2014 for numerous effluent limit violations from the STP as well as SSOs from the collection system. The Order required the Town to develop and implement corrective action plans to eliminate SSOs and to rehabilitate the STP to prevent further violations of the National Pollutant Discharge Elimination System (NPDES) permit. The Order also directed the Town to develop and implement a Sewage Overflow Response Plan to ensure proper response to SSOs and to develop and implement various Capacity, Management, Operations, and Maintenance (CMOM) programs to facilitate proper asset management of the sewer system. The Order was concluded and terminated by TDEC on July 7, 2021.
A. Permit Review
The Town's NPDES permit has an effective date of August 1, 2018, and expires on June 30, 2023. The permit has report-only requirements for flow and concentrations of TN, and TP and sets forth limits on the allowable levels of Total Suspended Solids (TSS), Settleable Solids, carbonaceous biochemical oxygen demand (CBOD5), Total Phosphorus (loading only), NH3-N, Dissolved Oxygen (DO), E. coli, TRC, and pH. The permit also requires continuous monitoring of the STP influent and effluent flow rate.
B. Records and Reports
EPA's Integrated Compliance Information System (ICIS) database shows the facility to be in SNC due to permit limit exceedances, as discussed above. Appendix 1 is a list of effluent exceedances from October 2019 through October 2022. ICIS data can be reviewed on the EPA's Enforcement and Compliance History Online (ECHO)1 public website.
1 https://echo.epa.gov
2
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
C. Flow Measurement A Parshall flume and ultrasonic flow meter is used to measure influent flow rate. Effluent flow rate is measured using ultrasonic metering device that measures the depth of effluent in the chlorine contact chamber (CCC). The CCC is divided into two independent flow paths of which is selected by the operator and can be operated simultaneously or independently. The effluent ultrasonic transducer is mounted on a galvanized pipe and is manually pivoted to read one CCC depth at a time, (Figure 2). Flow readings are doubled when both paths are being utilized.
Figure 2. Effluent ultrasonic transducer. Red arrows represent separate Flow paths in the CCC. D. Sampling Composite effluent samples are collected at the bottom of the step aeration basin. Two buffered thermometers were located in the refrigeration bin of the composite sampler unit. The composite sampler appeared to be in good condition. The STP operators analyze samples for all pollutants indicated in the NPDES permit with exception of TN and TP. Waypoint Analytical conducts sample analysis for TN and TP. The EPA reviewed laboratory bench sheets for the month of July 2022 and reviewed the sampling Chain of Custody (COC) sheet for samples collected in December 2021 and July 2022 and subsequent lab reports. No deficiencies were noted.
3
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
E. Site Visit (Operation and Maintenance) The STP utilizes an EQ basin to capture excess wet weather flow. The EQ basin was constructed as part of capital improvements associated with the 2014 Commissioner's Order and appeared to be in good operating condition. The Headworks consists of a vortex grit removal unit, and a Parshall flume with an ultrasonic meter (Figure 3).
Figure3. Headworks grit removal unit and influent Parshall flume. The influent appeared to be very thin (void of solids), indicating excessive rain derived infiltration and inflow (RDII) in the sewage collection system. The mixed liquor suspended solids (MLSS) in the Oxidation Ditch was dark brown and experiencing thick brown foaming that covered approximately 15 to 20% of the surface (Figure 4). Variable drive propeller mixers were installed in 2016 and are used to circulate and aerate the MLSS.
Figure 4. Oxidation Ditch MLSS. 4
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
One of the clarifiers was experiencing excessive foaming (Figure 5).
Figure 5. Excessive foaming in Clarifier. Nutrient removal is achieved by alternating aerobic and anaerobic zones around the oxidation ditch. Continuous DO meters are installed to assist in the process. New DO meters were installed in September/October 2021. The operator stated that the Return Activated Sludge/Waste Activated Sludge (RAS/WAS) valve is a turn valve ( turn valves fully opens or closes the valve with a 90-degree turn). The type of valve installed does not allow for fine tuning adjustments of RAS which can limit the STP operator's ability to maintain proper concentrations of biomass in the oxidation ditch.
F. Effluent and Receiving Waters The STP discharges into Poplar Creek. The outfall at the creek was not readily accessible. The effluent was clear, Figure 6.
5
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Figure 6. Left, effluent discharged from CCC. Right, step aeration. 6. Sludge Handling Sludge is thickened in a sludge digester basin and dewatered using a screw press before hauling to the local landfill. 7. Discussion Documents provided by TDEC show that the Town has invested at least $7M on collection system rehabilitation, mostly pipe lining, and another $7M on STP rehabilitation in efforts to comply with the Commissioner's Order. The Town's NPDES compliance history has improved significantly since the first calendar quarter following termination of the Commissioner's Order. Table 1 below is a summary of violations taken from Appendix A following termination of the Order. STP rehabilitation appears to have substantially corrected chronic NH3-N and e. coli exceedances, among other effluent violations of the past. The appearance of the influent suggests that RDII in the collection system is still a significant problem. The use of the EQ basin greatly assists with stabilizing sewage diluted with RDII to the STP, but prolonged RDII diluted influent will eventually impact the performance of the STP. Prolonged RDII diluted influent prompts the operator to maintain older MLSS in the oxidation ditch to make up for the loss of food for the microorganisms, which in turn contributes to thick brown foaming at the surface of the oxidation ditch and in the clarifiers and can also lead to effluent violations of ammonia and suspended solids removal efficiency (such as the violations noted in Table 1 below). Also, treating excessive RDII at the STP increases treatment costs and increases wear and tear on the STP equipment. The EPA strongly recommends that the Town continue to improve the collection system to remove excess RDII. The EPA also recommends the Town conduct a flow study throughout the sewage collection system, if not already completed or planned, to ascertain where the RDII is coming from following the rehabilitation efforts. Special attention should be given in assessing manhole crowns and sewage laterals.
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COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Measuring effluent flow from an ultrasonic transducer that is not stationary does not provide for a reliable flow reading. The pivot point on the mounting pole will loosen over time and cause the transceiver to tilt and draw closer to the effluent which will impact its accuracy. The EPA recommends adding an additional flow meter to maintain continuous monitoring for both CCC flow paths and replacing the pivoting transducer mount with a permanent/solid mount. The EPA also recommends replacing the turn RAS/WAS control valve with a multi-turn valve as explained in Section 5.E above.
End of Reporting
Month
Wet Weather
SSO
Phosphorus (lb/yr)
Ammonia (Daily Max mg/L)
Ammonia (Wk Ave
mg/L)
Ammonia (Mo Ave
mg/L)
SS % Removal
CBOD5 (Weekly
Ave lb/day)
7/31/2021 X
X
X
X
X
8/31/2021 X
X
X
X
9/30/2021 X
X
X
X
12/31/2021
X
X
1/31/2022
2/28/2022 X
2/28/2022
3/31/2022
X
X
2/28/2022
7/31/2022 X
X
9/30/2022 X
X
Table 1. Summary of violations reported from July 1, 2021, through October 31, 2022.
END OF REPORT 7
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Appendix A. List of effluent violations.
Monitoring Period End Date
Parameter Description
10/31/2020 NH3-N
12/31/2020 NH3-N
1/31/2021 NH3-N
1/31/2021 NH3-N
7/31/2021 NH3-N
7/31/2021 NH3-N
8/31/2021 NH3-N
1/31/2022 NH3-N
2/28/2022 NH3-N
8/31/2019
Chlorine, total residual
Chlorine, total 10/31/2019 residual
Chlorine, total 11/30/2019 residual
Chlorine, total 12/31/2019 residual
1/31/2020
Chlorine, total residual
Permit Limit Value 9.3
43 43 7 9.3 1.5 9.3 43 43 0.08 0.08 0.08 0.08 0.08
DMR Reported
Value 20.877 66.079 69.423 9.865 14.185 3.288 13.118 67.025 64.155
0.38 0.16 0.67 2.24 0.85
I
Units lb/d lb/d lb/d mg/L lb/d mg/L lb/d lb/d lb/d mg/L mg/L mg/L mg/L mg/L
Monitoring Frequency
MO AVG
MO AVG
MO AVG
MO AVG
MO AVG
MO AVG
MO AVG
MO AVG
MO AVG DAILY
MX DAILY
MX DAILY
MX DAILY
MX DAILY
MX
% Exceeded
124 54 61 41 53 119 41 56 49 375 100 738 2700 963
Violation Severity
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Monitoring Period End Date
Parameter Description
4/30/2020
Chlorine, total residual
7/31/2020
Chlorine, total residual
1/31/2021
Chlorine, total residual
2/28/2021
Chlorine, total residual
10/31/2020 NH3-N
12/31/2020 NH3-N
3/31/2022 NH3-N
3/31/2022 NH3-N
2/29/2020 Nitrogen, total [as N]
3/31/2020 Nitrogen, total [as N]
4/30/2020 Nitrogen, total [as N]
5/31/2020 Nitrogen, total [as N]
6/30/2020 Nitrogen, total [as N]
7/31/2020 Nitrogen, total [as N]
8/31/2020 Nitrogen, total [as N]
9/30/2020 Nitrogen, total [as N]
10/31/2020 Nitrogen, total [as N]
11/30/2020 Nitrogen, total [as N]
12/31/2020 Nitrogen, total [as N]
Permit Limit Value
0.08
0.08
0.08
0.08 1.5 7 43 7 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8 30782.8
DMR Reported
Value
0.95
0.31
0.29
0.47 1.588 8.646 58.751 8.101 45538.4 45156.8 41547.7 42744.9 40476.1 39781.5 39140.9 38658.8 38628.5 38121.9 38048.5
Units
mg/L
mg/L
mg/L
mg/L mg/L mg/L lb/d mg/L lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr lb/yr
Monitoring Frequency
DAILY MX
DAILY MX
DAILY MX
DAILY MX
MO AVG
MO AVG
MO AVG
MO AVG ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT ANNL TOT
% Exceeded
1088
288
263
488 6 24 37 16 48 47 35 39 31 29 27 26 25 24 24
Violation Severity
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Significant Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
II
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Monitoring Period End Date
Parameter Description
10/31/2020 NH3-N
10/31/2020 NH3-N
12/31/2020 NH3-N
1/31/2021 NH3-N
1/31/2021 NH3-N
3/31/2021 NH3-N
5/31/2021 NH3-N
6/30/2021 NH3-N
7/31/2021 NH3-N
7/31/2021 NH3-N
8/31/2021 NH3-N
8/31/2021 NH3-N
8/31/2021 NH3-N
9/30/2021 NH3-N
9/30/2021 NH3-N
9/30/2021 NH3-N
12/31/2021 NH3-N
1/31/2022 NH3-N
2/28/2022 NH3-N
Permit Limit Value
3 14.2 62 62 15 62
3 3 2.3 3 3 2.3 14.2 14.2 3 2.3 62 62 62
DMR Reported
Value 6.94 20.876 71.688 69.422 18.5 63.677 3.13 3.23 3.0686 16.2 5.71 3.66 39.71 21.455 8.27 4.196 69.506 100.536 141.9
Units mg/L lb/d lb/d lb/d mg/L lb/d mg/L mg/L mg/L mg/L mg/L mg/L lb/d lb/d mg/L mg/L lb/d lb/d lb/d
Monitoring Frequency
DAILY MX
WKLY AVG
WKLY AVG
WKLY AVG
DAILY MX
WKLY AVG
DAILY MX
DAILY MX
WKLY AVG
DAILY MX
DAILY MX
WKLY AVG
WKLY AVG
WKLY AVG
DAILY MX
WKLY AVG
WKLY AVG
WKLY AVG
WKLY AVG
% Exceeded
131 47 16 12 23 3 4 8 33 440 90 59 180 51 176 82 12 62 129
Violation Severity
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
III
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Monitoring Period End Date
Parameter Description
3/31/2022 NH3-N
3/31/2022 2/29/2020 3/31/2020 4/30/2020 5/31/2020 6/30/2020 7/31/2020 8/31/2020 9/30/2020 10/31/2020 11/30/2020 12/31/2020 1/31/2021 4/30/2021 5/31/2021 6/30/2021 7/31/2021 8/31/2021 9/30/2021 12/31/2021
NH3-N
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
Phosphorus, total [as P]
10/31/2019 E. coli
Permit Limit Value
62 10 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 4830.2 941
DMR Reported
Value
Units
73.039
lb/d
10.73
mg/L
6302
lb/yr
5827.9
lb/yr
6298.9
lb/yr
6566
lb/yr
6007.9
lb/yr
5771.4
lb/yr
5793.2
lb/yr
5854.4
lb/yr
6176
lb/yr
6002.4
lb/yr
6131.8
lb/yr
5762.8
lb/yr
5233.8
lb/yr
53984
lb/yr
5010
lb/yr
5044.9
lb/yr
5074.2
lb/yr
4859.5
lb/yr
5146.1
lb/yr
2419.6 #/100mL
IV
Monitoring Frequency
WKLY AVG WKLY AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG ROLL AVG DAILY MX
% Exceeded
18 7 30 21 30 36 24 19 20 21 28 24 27 19 8 1018 4 4 5 1 7 157
Violation Severity
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
COMPLIANCE EVALUATION INSPECTION REPORT Oliver Springs STP- CV-TN0020885-101222
Monitoring Period End Date
Parameter Description
11/30/2019 E. coli
11/30/2020 E. coli
12/31/2021 BOD5
2/28/2022 BOD5
4/30/2021 10/31/2019 11/30/2019 12/31/2019 9/30/2021
CBOD, % removal
Solids, suspended % removal
Solids, suspended % removal
Solids, suspended % removal
Solids, suspended % removal
12/31/2019 SSO, Dry Weather
7/31/2019 SSO, Wet Weather
10/31/2019 SSO, Wet Weather
12/31/2019 SSO, Wet Weather
3/31/2021 SSO, Wet Weather
5/31/2021 SSO, Wet Weather
7/31/2021 SSO, Wet Weather
8/31/2021 SSO, Wet Weather
9/30/2021 SSO, Wet Weather
2/28/2022 SSO, Wet Weather
7/31/2022 SSO, Wet Weather
9/30/2022 SSO, Wet Weather
Permit Limit Value 941 941 154 154
40 40 40 40 40 0 0 0 0 0 0 0 0 0 0 0 0
DMR Reported
Value 1119.9 1011.2 183.4
182 21.1 -40 -33.3 -30.4 20
3 3 2 3 3 3 3 3 3 2 1 1
Units #/100mL #/100mL
lb/d lb/d % % % % % occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo occur/mo
Monitoring Frequency
DAILY MX
DAILY MX
WKLY AVG
WKLY AVG
DAILY MN
DAILY MN
DAILY MN
DAILY MN
DAILY MN
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
MO TOTAL
% Exceeded
19 7 19 18 32 133 122 117 33
Violation Severity
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
Noncompliance Effluent Violation
V