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HomeMy WebLinkAboutNC0020664_Fact Sheet_20200610Fact Sheet NPDES Permit No. NCOO2O664 Permit Writer/Email Contact Gary Perlmutter, gary.perlmutter@ncdenr.gov: Date: August 28, 2019 Division/Branch: NC Division of Water Resources / NPDES Complex Permitting Fact Sheet Template: Version 09Jan2017 Permitting Action: ❑X Renewal ❑ Renewal with Expansion ❑ New Discharge ❑ Modification (Fact Sheet should be tailored to mod request) Note: A complete application should include the following: • For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee • For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2nd species WET tests. • For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based on industry category. Complete applicable sections below. If not applicable, enter NA. 1. Basic Facility Information Facility Information Applicant/Facility Name: Town of Spindale/Spindale WWTP Applicant Address: P.O. Box 186, Spindale, NC 28160 Facility Address: Ecology St., Spindale, NC 28160 Permitted Flow: 3.0 MGD Facility Type/Waste: MAJOR Municipal; 80% domestic, 20% industrial' Facility Class: Grade IV Treatment Units: Screening, Grit Removal, Extended Aeration, Clarification, Chlorination, and Dechlorination Pretreatment Program (Y/N) Yes County: Rutherford Region Asheville ' From permitted industrial flow of 0.6 MGD. Briefly describe the proposed permitting action and facility background: The Town of Spindale has applied for an NPDES permit renewal for its Spindale WWTP, received by DWR on January 30, 2018. A more complete application was received on March 12, 2018 with three PPAs and two 2nd species toxicity test reports, the latter from June 2014 and September 2015. Two additional 2nd species toxicity tests, from December 2016 and December 2018, were located in the DMR files. Page 1 of 14 This 3.0 MGD facility serves a population of 4,248 residents in the Town of Spindale. The WWTP treats a combination of domestic and industrial wastewater with a pretreatment program involving three significant industrial users (SIUs). The SIUs include: Spindale Colormasters LLC (textiles), The Timken Corp. (CIU 433 — Metal Finishing), and Ultimate Textiles, Inc. (textiles). The permit had 3.0, 4.5 and 6.0 MGD flow tiers since 2004, wherein the 3.0 MGD flow tier was introduced in response to a decrease in flow resulting from a loss of industrial users. The permit was modified in 2015 to remove the 4.5 and 6.0 MGD tiers to address the facility's AtC application for refurbishment and rerate the design flow from 6.0 to 3.0 MGD. The Permittee agreed that the higher flow tiers were no longer needed. The 2015 modification also included a revised Supplement to the Permit Cover Sheet to reflect changes in accordance with the planned 3.0 MGD design refurbishment construction. The AtC 020664A02 was issued in October 2015 with a corrected version issued in March 2016. 2. Receiving Waterbody Information Receiving Waterbody Information Outfalls/Receiving Stream(s): Outfall 001/Catheys Creek Stream Segment: 9-41-13-(6) Stream Classification: C Drainage Area (miz): 41.6 Summer 7Q10 (cfs) 20 Winter 7Q10 (cfs): 26 30Q2 (cfs): 35 Average Flow (cfs): 62 IWC (% effluent): 19% 303(d) listed/parameter: Fish Community Subject to TMDL/parameter: State-wide Mercury TMDL Basin/Sub-basin/HUC: Broad/03-08-02/03050105 USGS Topo Quad: F 11 NW/Rutherfordton South, NC The receiving stream segment of Catheys Creek is split into two assessment units (AU), with the dividing line at the confluence with Hollands Creek, just upstream of Spindale WWTP's Outfall 001 (Fig. 1). AU 9-41-13-(6)a, upstream of the discharge, is not impaired according to the NC Final 2018 303(d) list, with benthos and fish community parameters meeting criteria according to the 2018 Integrated Report. AU 9- 41-13(6)b, into which Spindale WWTP's effluent discharges, is impaired for Fish Community, exceeding criteria in 2004, as listed in the Final 2018 Integrated Report. The Hollands Creek segment flowing into Catheys Creek [AU 9-41-13-7-(3)b] is also impaired for Fish Community. The 2015 Catheys Creek Fish Community Summary Report rates this stream as a Good -Fair bioclassification, noting that recolonization of certain species following droughts may be affected by the Spindale WWTP effluent. All above AUs are meeting criteria for benthos. Page 2 of 14 Figure 1. Receiving waters of Spindale WWTP per the 2018 Integrated Report categories. Blue line = Supporting (Category 1); red line = Impaired (Category 5); diamond = WWTP Outfall. `--AU 9-41-13-(b) Creek LJ • y µ 5 C _,treek to flo �� ,ram. �� : � ' i - �.-����' ` • � �. .'` J `7 A management plan was developed for the Catheys Creek watershed in 2005 by the NC Ecosystem Enhancement Program and EarthTech, from studies to investigate sources of pollution and degradation as well as to identify potential stream and wetland restoration projects. The watershed was divided into 14 sub -watersheds, which were then ranked based on three watershed functions: water quality, hydrology and habitat. The studies found that the watershed as a whole showed signs of moderate functional degradation in terms of hydrology, water quality and habitat. The sub -watershed where the Spindale WWTP discharges into was ranked low to moderately low in watershed functionality with higher pollutant concentrations found downstream of Spindale. The sub -watershed that Spindale WWTP discharges into was not one of the four selected for restoration and management focus. 3. Effluent Data Summary Effluent data for Outfall 001 is summarized in Table 1 for the period of August 2015 through July 2019. Table 1. Effluent Data Summary Outfall 001. Parameter Units Average Max Min Permit Limit 1 Flow' MGD 0.86 7.10 0.02 MA = 3.0 MA = 22.5 BOD mg/L 6.5 48.0 0.0 WA = 38.2 BOD removal % 97.8 99.7 92.2 > 85 TSS mg/L 11.2 37.0 < 2.5 MA = 30.0 WA = 45.0 TSS removal % 92.3 96.3 87.5 > 85 Page 3 of 14 Parameter Units Average Max Min Permit Limit' NH3-N mg/L 1.3 10.2 0.0 MA = 10.0 WA = 30.0 DO mg/L 12.9 6.2 DA > 6.0 Fecal Coliform (geometric mean) #/100 mL 16 365 MA = 200 WA = 400 TRC µg/L 18 49 0 DM = 28 3 pH S.U. 7.3 8.3 5.9 6.0 — 9.0 Temperature °C 18.2 28.5 1.7 Total Nitrogen (NO2 + NO3 + TKN) mg/L 10.98 31.93 2.52 Total Phosphorus mg/L 3.09 4.96 0.09 Total Copper µg/L 37 69 1 u Total Selenium µg/L 2.8 < 5.0 < 2.5 Total Silver µg/L 2.7 < 5.0 < 2.5 Total Zinc µg/L 96 218 9 Chloride mg/L 177 385 42 'MA = Monthly Average, WA = Weekly Average, DM = Daily Maximum; DA = Daily Average. 2 Average for CY2018 = 1.14 MGD, 38% of design flow. 'Values < 50 µg/L considered compliant. 4. Instream Data Summary Instream monitoring may be required in certain situations, for example: 1) to verify model predictions when model results for instream DO are within 1 mg/L of instream standard at full permitted flow; 2) to verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other instream concerns. Instream monitoring may be conducted by the Permittee, and there are also Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in which case instream monitoring is waived in the permit as long as coalition membership is maintained). If applicable, summarize any instream data and what instream monitoring will be proposed for this permit action: The current permit requires instream monitoring for Dissolved Oxygen (DO), Temperature, Conductivity and Fecal Coliform. The instream monitoring locations in the current permit are NCSR 1510/Hudlow Road (upstream) and NCSR 1549/Rock Corner Road (downstream). However, the discharge coordinates place it upstream of the Hudlow Rd bridge, thus upstream of the upstream location listed in the permit. Discussion with the ORC instead places Outfall 001 just downstream of the Hudlow Rd bridge, and the Upstream location 100 yd upstream of the bridge. Google Earth places these locations with the following coordinates: • Upstream: 32°22'54" N, 81°53' 18" W (not specified in current permit) • Outfall 001: 32°22'52" N, 81 °53' 16" W (32°22'52" N, 81 °53' 18" Win current permit) During a site visit on September 20, 2019, the Upstream location was verified as upstream of the discharge in Catheys Creek, and Outfall 001 was found to lie just downstream of the confluence of Hollands Creek Page 4 of 14 and Catheys Creek. The current upstream sampling site lies upstream of the confluence; and Hollands Creek is impaired for fish community, as is Catheys Creek downstream of the confluence. It would be preferred to have the upstream sampling below the confluence; however, the Outfall location and a proposed location just upstream of it and at or downstream of the confluence were found not to be safely accessible. Hardness data collected directly above the outfall but below the confluence and at the current upstream location in September and October 2019 were similar with an overall range of 15-18 mg/L, below the default value of 25 mg/L. Therefore, the current upstream location is maintained in the permit. Also, the description and coordinates of the Outfall and Upstream locations were corrected in the permit and on the permit map. Instream data of each above parameter were charted and tested for up- and downstream differences of paired data using paired two -sample t-test for means. Comparisons were also made with concurrent effluent data. The instream data were retrieved from submitted DMRs ranging from June 2016 through July 2019. Instream DO remains in the permit as a parameter of concern for aquatic life. Summer minima at both stations were above the standard of 5.0 mg/L (15A NCAC 02B .0211). Upstream DO ranged 6.89-15.37 mg/L and downstream DO ranged 7.00-16.00 mg/L. No statistically significant differences were found between paired up- and downstream values on a given day (t = 0.68, p > 0.1). Concurrent effluent DO ranged 6.15-12.93 mg/L. The effluent does not appear to effect instream DO. Instream Temperature remains in the permit as a parameter of concern for aquatic life. Summer maxima at both stations were below the standard of 29°C for mountain and upper piedmont waters (15A NCAC 02B .0211). Upstream ranged 0.3-23.6°C and downstream ranged 0.9-24.0°C. Upstream temperatures tested higher than those downstream (t = 4.82, p < 0.001) with an average decrease from up- to downstream of 0.21 °C. Maximum up- to downstream increase was 2.60°C, below the 2.8°C increase standard for mountain and upper piedmont waters (15A NCAC 02B .0211). Concurrent effluent temperatures ranged 1.7-28.3°C. The effluent does not appear to affect the instream temperature. Instream Conductivity remains in the permit due to facility's receiving wastewater from industrial users. Review of instream conductivity showed ranges of 31-84 µmhos/cm (upstream) and 39-104 µmhos/cm (downstream), with downstream values significantly higher on average (t =-31.23, p < 0.0001), suggesting an effect by the effluent. There is no effluent data to compare against, as Conductivity monitoring is not in the permit. Therefore, effluent Conductivity monitoring has been added to the permit. NC DWR permitting guidance states that instream monitoring for Fecal Coliform is not required unless the receiving water is impaired due to coliform or is a Class B waterbody. The receiving stream is a Class C water and is not listed in as impaired due to coliform in the NC Final 2018 303(d) list. Downstream coliform counts (geometric mean =126 cfu/100 mL; range: 8-470 cfu/100 mL) appeared lower on average than those upstream (geometric mean = 159 cfu/100 mL; range: 12-880 cfu/100 mL), while concurrent effluent coliform counts were substantially lower (geometric mean = 14 cfu/mL; range: < 1-330 cfu/100 mL). Therefore, Fecal Coliform is not required and instream monitoring for it has been removed from the permit. No changes are proposed to the permit for instream monitoring of DO, Temperature and Conductivity. Is this facility a member of a Monitoring Coalition with waived instream monitoring (YIN): NO. Name of Monitoring Coalition: N/A 5. Compliance Summary Page 5 of 14 Summarize the compliance record with permit effluent limits (past 5 years): From September 2014 through August 2019, one violation resulted in an action: a pH value of 5.9 on 3/18/2019, resulting in an issuance of a Notice of Deficiency. Summarize the compliance record with aquatic toxicity test limits and any second species test results (past 5 years): The facility passed 16 of 16 quarterly chronic toxicity tests from March 2015 through March 2019. Among the four 2nd species tests reported, three passed and the fourth, sampled in December 2018, failed. Summarize the results from the most recent compliance inspection: The most recent facility inspection, conducted on 6/11/2019, reported that the facility was clean and neat in appearance, and records were up to date. The most recent pretreatment compliance inspection was also conducted on 6/11/2019 and reported no compliance issues. 6. Water Quality -Based Effluent Limitations (WQBELs) Dilution and Mixing Zones In accordance with 15A NCAC 213.0206, the following streamflows are used for dilution considerations for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q 10 streamflow (chronic Aquatic Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH). If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA. If applicable, describe any mixing zones established in accordance with 15A NCAC 2B.0204(b): NA. Oxygen -Consuming Waste Limitations Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits (e.g., BOD = 30 mg/L for Municipals) may be appropriate if deemed more stringent based on dilution and model results. If permit limits are more stringent than TBELs, describe how limits were developed: BOD limits are based on a water quality model and shall be maintained in the permit. Ammonia and Total Residual Chlorine Limitations Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of 1.0 mg/L (summer) and 1.8 mg/L (winter). Acute ammonia limits are derived from chronic criteria, utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals. Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection of aquatic life (17 µg/L) and capped at 28 µg/L (acute impacts). Due to analytical issues, all TRC values reported below 50 µg/L are considered compliant with their permit limit. Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: Ammonia limits in the permit are based on the water quality model. The 3.0 MGD discharge has a monthly average limit of 10.0 mg/L (summer and winter) to correspond with the original modeled ammonia limits based on oxygen consumption. Toxicity -based Ammonia was reviewed in the attached Wasteload Allocation (WLA) sheet using the flow design of 3.0 MGD and receiving stream low flows of summer 7Q 10 = 20 cfs and winter 7Q 10 = 26 cfs. The resulting allowable concentrations were 4.4/13.2 mg/L monthly average/weekly average for summer, and 10.6/31.8 mg/L monthly average/weekly average for winter. Since the existing limits are Page 6 of 14 more stringent than the winter allowable concentrations, only summer limits have been reduced in the permit. A review of DMR data from August 2015 through July 2019 against the proposed limits show that the lowered summer limits can be met, but with some difficulty. The ORC attributed the elevated values to cold temperatures, and does not take issue with the proposed limits. NH3- Proposed Limits Wk Avg. I Mo. Avg WA Limit - - MA Limit 4M 30 25 20 UO E 15 10 - - 5 ♦�♦ - - - y ♦ • 0 ♦♦♦- i oti° oti�' oti�O � tioti� otiA ooti�' oti�' otio oti�' yo\�A\ti �\yh\ti y\T The current TRC limit of 28 µg/L was first established in the permit in 2004 as capped to protect against acute impacts in the receiving water per the then new TRC policy. WLA calculations for TRC also cap the allowable concentration at 28 µg/L. The current TRC limit has been maintained in the permit. Reasonable Potential AnalysisRPA) for Toxicants If applicable, conduct RPA analysis and complete information below. The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero background; 3) use of %2 detection limit for "less than" values; and 4) streamflows used for dilution consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of Instream Dissolved Metals Standards, dated June 10, 2016. A reasonable potential analysis was conducted on effluent toxicant data collected from September 2016 through June 2019. Pollutants of concern included toxicants with positive detections and associated water quality standards/criteria. Based on this analysis, the following permitting actions are proposed for this permit: • Effluent Limit with Monitoriniz. The following parameters will receive a water quality -based effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable water quality standards/criteria: Copper, Silver o Silver is to be analyzed and reported to the lower reporting level of the procedure. • Monitoring Only. The following parameters will receive a monitor -only requirement since they did not demonstrate reasonable potential to exceed applicable water quality standards/criteria, but the maximum predicted concentration was > 50% of the allowable concentration: None. Page 7 of 14 No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since they did not demonstrate reasonable potential to exceed applicable water quality standards/criteria and the maximum predicted concentration was < 50% of the allowable concentration: Arsenic, Beryllium, Cadmium, Chlorides, Total Phenols, Total Chromium, Cyanide, Lead, Molybdenum, Nickel, Selenium, Zinc. o Cadmium, Lead are to be reported to the lower reporting level of the procedure. POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for additional pollutants of concern. o The following parameter(s) will receive a water quality -based effluent limit (WQBEL) with monitoring, since as part of a limited data set, two samples exceeded the allowable discharge concentration: None. o The following parameter(s) will receive a monitor -only requirement, since as part of a limited data set, one sample exceeded the allowable discharge concentration: None. If applicable, attach a spreadsheet of the RPA results as well as a copy of the Dissolved Metals Implementation Fact Sheet for freshwater/saltwater to this Fact Sheet. Include a printout of the RPA Dissolved to Total Metal Calculator sheet if this is a Municipality with a Pretreatment Program. Toxicity Testing Limitations Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than domestic waste) will contain appropriate WET limits and monitoring requirements, with several exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test failure. Describe proposed toxicity test requirement: This facility is a Major POTW, and a chronic WET limit at 19% effluent will continue on a quarterly frequency. The WET limit is based on the Instream Waste Concentration (IWC) as calculated from the design flow of 3.0 MGD and the receiving stream 7Q10 of 20 cfs (WET Permitting Limits and Monitoring Requirements guidance memo, 8/2/1999). Mercury Statewide TMDL Evaluation There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and industrial facilities with known mercury discharges. Given the small contribution of mercury from point sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (> I ng/L) will receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed the WQBEL value (based on the NC WQS of 12 ng/L) and/or if any individual value exceeds a TBEL value of 47 ng/L. Describe proposed permit actions based on mercury evaluation: A Mercury Minimization Plan (MMP) special condition was added to the permit in 2013. During a site visit on 9/20/2019, the MMP plus several completed mercury survey sheets were reviewed and found complete. Submitted low level mercury data from November 2016 through March 2019 were reviewed for TMDL evaluation. All data were detected with no averages exceeding the TBEL of 47 ng/L and no individual values exceeding the WQBEL of 63.6 ng/L (Table 2). Because the design flow is > 2 MGD and mercury was detected in the effluent, an MMP is required. Therefore, the MMP special condition has been reworded to maintain the MMP. Page 8 of 14 Table 2. Mercury Effluent Data Summary 2016 2017 2018 2019 # of Samples 2 3 4 1 Annual Average Cone. ng/L 15.4 10.1 14.4 12.5 Maximum Cone, ng/L 20.10 13.00 19.90 12.50 TBEL, ng/L 47 WQBEL, ng/L 63.6 Other TMDL/Nutrient Management Strategy Considerations If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within this permit: NA. Other WQBEL Considerations If applicable, describe any other parameters of concern evaluated for WQBELs: NA. If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall comply with in order to protect the designated waterbody: NA If applicable, describe any compliance schedules proposed for this permit renewal in accordance with 15A NCAC 2H.0107(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: A 4-yr compliance schedule has been added for Total Copper and Total Silver limits to allow for additional data collection and development and implementation of a compliance strategy. If applicable, describe any water quality standards variances proposed in accordance with NCGS 143- 215.3(e) and 15A NCAC 2B.0226 for this permit renewal: NA 7. Technology -Based Effluent Limitations (TBELs) Municipals (if not applicable, delete and skip to Industrials) Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg1L BODs/TSS for Monthly Average, and 45 mg/L for BODs/TSS for Weekly Average). YES. If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA. Are 85% removal requirements for BOD51TSS included in the permit? YES. If NO, provide a justification (e.g., waste stabilization pond). NA. 8. Antidegradation Review (New/Expanding Discharge) Page 9 of 14 The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not degrade water quality. Permitting actions for new or expanding discharges require an antidegradation review in accordance with 15A NCAC 213.0201. Each applicant for a new/expanding NPDES permit must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all cases, existing instream water uses and the level of water quality necessary to protect the existing use is maintained and protected. If applicable, describe the results of the antidegradation review, including the Engineering Alternatives Analysis (EAA) and any water quality modeling results: NA 9. Antibacksliding Review Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL limits, or WQBELs may be less stringent based on updated RPA or dilution). Are any effluent limitations less stringent than previous permit (YES/NO): NO. If YES, confirm that antibacksliding provisions are not violated: NA. 10. Monitoring Requirements Monitoring frequencies for NPDES permitting are established in accordance with the following regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 213.0500; 2) NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance, Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -backsliding prohibitions would not be triggered by reductions in monitoring frequencies. Monitoring frequencies follow 15A NCAC 213 .0500 for all parameters. For instream monitoring, refer to Section 4. 11. Electronic Reporting Requirements The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports (DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to submit additional NPDES reports electronically. This permit contains the requirements for electronic reporting, consistent with Federal requirements. 12. Summary of Proposed Permitting Actions Table 3. Current Permit Conditions and Proposed Changes. Page 10 of 14 Parameter Current Permit' Proposed Change Basis for Condition/Change Flow MA 3.0 MGD No change 15A NCAC 2B .0505 Parameter Current Permit' Proposed Change Basis for Condition/Change BOD5 MA = 22.5 mg/L WA = 38.2 mg/L No change WQBEL. Based on model results MA = 30.0 mg/L TBEL. Secondary treatment TSS WA = 45.0 mg/L No change standards/40 CFR 133/15A NCAC 2B .0406. Summer: WQBEL. Calculation results based on MA = 4.4 mg/L NC's use of EPA criteria in developing NH3-N MA = 10.0 mg/L WA = 13.2 mg/L 1.0 mg/L summer and 1.8 mg/L winter WA = 30.0 mg/L Winter: values in wasteload allocations to MA = 10.0 mg/L protect against NH3-N toxicity (see WA = 30.0 mg/L WLA sheet attached). DO DA > 6.0 mg/L No change WQBEL. State WQ standard 15A — NCAC 2B .0200. No change for WQBEL. State WQ standard, 15A MA 200 /100 mL effluent. Remove NCAC 2B .0200. Division guidance Fecal Coliform WA 400 /100 mL instream for instream monitoring (receiving stream not Class B or impaired for monitoring. coliform). Total Residual DM = 28 µg/L No change WQBEL. State WQ acute standard, Chlorine (TRC) 15A NCAC 2B .0200 pH 6 — 9 SU No change WQBEL. State WQ standard, 15A NCAC 2B .0200. Temperature Monitor daily No change State WQ reporting requirements 15A NCAC 2B .0500. Conductivity No requirement Add daily State WQ reporting requirements 15A monitoring to permit NCAC 2B .0500. Total Nitrogen Monitor quarterly No change State WQ reporting requirements 15A (NO3 + NO2 + TKN) NCAC 2B .0500. Total Phosphorus Monitor quarterly No change State WQ reporting requirements 15A NCAC 2B .0500. Chronic Ceriodaphnia dubia WQBEL. No toxics in toxic amounts. Toxicity Test Pass/Fail at 19 /0 No change 15A NCAC 2B.0200 and 15A NCAC effluent 2B.0500. Hardness -dependent dissolved metals Add effluent and Water quality standards, approved in Total Hardness No requirement 2016, need effluent and instream upstream monitoring hardness data for calculations of permit limitations. Page 11 of 14 MA = 45.7 µg/L DM = 53.4 µg/L WQBEL. Reasonable potential to Total Copper Monitor quarterly Add 4-yr exceed allowable discharge compliance schedule concentration found. Parameter in Current Permit' Proposed Change Basis for Condition/Change Remove from No reasonable potential to exceed WQ Total Selenium Monitor quarterly standard; maximum predicted value < permit 50% of allowable concentration. MA = 0.3 µg/L WQBEL. Reasonable potential to Total Silver Monitor quarterly DM = 1.7 µg/L Add 4-yr exceed allowable discharge compliance schedule concentration found. Remove from No reasonable potential to exceed WQ Total Zinc Monitor quarterly standard; maximum predicted value < permit 50% of allowable concentration. Remove from No reasonable potential to exceed WQ Chloride Monitor quarterly standard; maximum predicted value < permit 50% of allowable concentration. Mercury Revise MMP to In accordance with 2012 Statewide Total Mercury Minimization Plan require its Mercury TMDL Implementation, per (MMP) maintenance facility size and monitoring data criteria. Effluent Pollutant Three times per No change 40 CFR 122 Scan permit cycle Add Electronic In accordance with EPA Electronic Electronic Reporting No requirement Reporting Special Reporting Rule 2015. Condition 'MGD = Million gallons per day, MA = Monthly Average, WA = Weekly Average, DM = Daily Maximum. 13. Public Notice Schedule: Permit to Public Notice: 11/02/2019, 01/29/2020, 03/25/2020. Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following the publication date of the public notice. Any request for a public hearing shall be submitted to the Director within the 30 days comment period indicating the interest of the party filing such request and the reasons why a hearing is warranted. No comments to the third draft, sent to Public Comment on March 25, 2020, were received by the Permittee, EPA, DWR Regional Office or any other party. 14. NPDES Division Contact: Page 12 of 14 If you have questions regarding any of the above information or on the attached permit, please contact Gary Perlmutter at (919) 707-3611 or via email at g_ary_perlmutterkticdenngov. 15. Fact Sheet Addendum (if applicable): Were there any changes made since the Draft Permit was public noticed (Yes/No): Yes, the Permittee provided comments, all of which were considered. Initial comment responses triggered a second Public Comment period by the insertion of a compliance schedule to the draft permit. Comments to the second draft by the Permittee triggered a third Public Comment period due to the Permittee's request and justification to extend the compliance schedule by one year. No comments to the third draft were received. Comments to the first draft: • The Town requested an extension of the comment period, stating that it was unaware of the comment due date, and unaware of the public notice. As the permit writer responded to a similar extension inquiry by the facility's consultant engineer, the Division does not make extensions to any one party in the interest of fairness to all stakeholders in the public comment period. An affidavit for the public notice was received by DWR, stating a publication date of November 2, 2019. The comment period ended December 5, 2019. • The Town requested acceptance and review of additional effluent copper and silver data collected over a three-week period ending December 17, 2019. The town argues the limits in the draft permit "may have been based in part on incomplete or faulty data." • The Town requested a "grace period" [i.e., a compliance schedule] of at least six months for Copper and Silver limits to become effective, allowing time for increased sampling and investigation of possible sources. • The Town requested moving the upstream sample point to a safer location yet to be specified. While the proposed location is argued to be accessible via the bridge only, the permit writer visited the location off of a small turnout with the ORC and consultant engineer to observe the outfall. The proposed upstream location is accessible from the outfall location. To make the upstream location more representative of the receiving water, it needed to be at or downstream of the confluence of Hollands and Catheys creeks, and upstream of the outfall. The above comments were addressed to the Permittee via e-mail, explaining the comment period and providing a pdf of the Public Notice affidavit. The Division allowed the Permittee's request for time to collect additional data and propose an alternate upstream sampling location. The Permittee's response was received on January 9, 2020. The Permittee's response included a request for a one-year delay in implementing the Copper and Silver limits to allow time for further sampling to be reassessed via an RPA, providing one set of influent and effluent data collected in December 2019. The original upstream location was proposed as the safest location for sampling. Comments to the second draft: • Minor technical details (e.g. BOD limit term in summer, effective date, Silver non -detects at < 0.5 µg/L demonstrate compliance for limits below detection) were questioned for clarification. • A reference to water quality standards and criteria was requested. • The Permittee asked if 2nd species toxicity tests could be submitted electronically. • The Electronic Reporting section was requested to be modified to allow for e-mail submittals. Page 13 of 14 • The Permittee proposed extension of the Silver and Copper compliance schedule from 3 to 4 yrs, with the development of the action plan delayed from the first to second year to allow for 2 yrs of data collection for an RPA reassessment. These comments were addressed via teleconferences with the Permittee, ORC and consultant engineer in March 2020. All technical changes were made to the draft permit, a link to the NC Water Quality Standards table was provided, and the compliance schedule was extended to four years. The revised draft was then sent for a third Public Comment period, to which no comments were received. If Yes, list changes and their basis below: • Minor technical corrections were made (BOD limit was corrected from summer to year-round in agreement with current permit; effective date updated to 2020). • The Priority Pollutant Scan special condition was modified to allow for electronic reporting of PPAs and 2nd species toxicity testing. • A 4-yr compliance schedule has been added to meet Copper and Silver limits. • The original upstream monitoring location was reinstated for safe access, finding that comparative Hardness data between the original location and the proposed location were similar at < 25 mg/L. 16. Fact Sheet Attachments (if applicable): • PERCS Information Request form • Final 2018 NC 303(d) list, page 1 • Final 2018 NC Integrated Report, pages 12, 25 • Fish Community Summary Report, Catheys Creek sample page • Broad River Basin Plan: Catheys Creek Watershed (DWQ 2009) • Effluent summary charts and tables • BOD and TSS removal calculator output tables • Instream Monitoring data and charts • Monitoring Report (MR) Violations page • WET testing and Self -Monitoring Summary, page 106 • Permit and Pretreatment Compliance Inspection Reports • NH3/TRC WLA Calculations sheet • RPA Spreadsheet Summary • Dissolved Metals Implementation — Freshwater • Effluent, upstream hardness results • Mercury WQBEL/TBEL Evaluation data and summary table • Spindale comments to the draft permit, DWR response, and Spindale follow-up • Spindale comments to the 2nd draft permit, DWR response as 3" Fact Sheet Addendum Page 14 of 14 NPDES/A uifer Protection Permitting Unit Pretreatment Information Request Form PERMIT WRITER COMPLETES THIS PART: PERMIT WRITERS - AFTER you get this form back Check all that apply from PERCS: - Notify PERCS if LTMP/STMP data we said should be Date of Request 8/27/2019 municipal renewal x on DMRs is not really there, so we can get it for you Re uestor Gary Perlmutter new industries (or NOV POTW). Facility Name S indale WWTP WWTP expansion - Notify PERCS if you want us to keep a specific POC Permit Number NCO020664 Speculative limits in LTMP/STMP so you will have data for next permit Region Asheville stream reclass. renewal. - Email PERCS draft permit, fact sheet, RPA. Basin Broad outfall relocation - Send PERCS paper copy of permit (w/o NPDES 7Q10 change boilerplate), cover letter, final fact sheet. Email RPA if other changes. other check applicable PERCS staff: Other Comments to PERCS: BIRD, CPF, CTB, FRB, TAR X Vivian Zho 807-6310 Facility is rated 1.9 MGD wtih no SIUs listed in its applicaation, and is not CHO, HIW, LTN, LUM, NES, NEW, ROA, YAD listed in POTW with pretreatment spreadsheet. Monti Hassan (807-6314) PERCS PRETREATMENT STAFF COMPLETES THIS PART: Status of Pretreatment Program (check all that apply) 1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE 2) facility has no SIU's, does not have Division approved Pretreatment Program 3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV' if program still under development) 3a) Full Program with LTMP 3b) Modified Program with STMP 4) additional conditions regarding Pretreatment attached or listed below Flow, MGD Permitted Actual Time penodfor Actu 1 STMP time frame. Industrial Wt_ V Most recent: Uncontrollable n/a Next Cycle: POC due to NPDES/ Non- Required by Required POC due POTW POC STMP LTMP d Parameter of e m Concern (POC) Disch Permit EPA* by 503 to SIU *** (Explain Effluent Effluent 0 °a Check List Limit Sludge— 9 '" below **- ) Fre q Fre q Q = Quarterly M = Monthly BOD V 4 Q M _14TSS 4 101 M NH3 V 4 Q M Arsenic 4 Q M Cadmium ti 4 M Chromium 4 M Copper 4 M Cyanide 4 1 CA M /s all data on DMRs? Lead 4 1 Q1 M YES 15 Mercury 4 1 Q1 M NO attach data Molybdenum V 4 1 Q M v Nickel 4 1 Q M Silver 4 Q M Selenium 4 1 Qj M d Zinc -1 NZ4 1 Qj M I Is data in spreadsheet? 4 101 M YES (email to writer 4 1 C4 M NO 4 M 4 Q M _ 4 Q M 4 Q M *Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or oomposte (dif POCs for incinerators) *** Only in LTMP/STMP while SIU still discharges to POTW **** Only in LTMP/STMP when pollutant is still of concern to POTW Comments to Permit Writer ex., explanation of any POCs• info you have on IU related investigations into NPDES problems): 3 stus VKXtrA,I f-'Ms,� Z191V t PERC NPDES_Pretreatment.request.forrn.may2016 Revised: July 24, 2007 C {A m m O' O m C c C ' T L O E NI L 1 Q mLn' V O; M, O: U L -. a UJ m : -0 O E G1 Z Q � a 41 o o�'> � J U Q X O U Y I OI GJ ! 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Z iI (U U: W m u LL LL I- u U to 0 4-J (U m IM " i LL W 0 Im 4- U) Y C cl) tA 14- u Z E' 1 u 41 (U Ln r ail tn E E 0 0 0 1 U F- LL, CID LL LL cm -4 4- 0 Ln r,4 w cto cc a. 41 0 CL aj co cu u z 00 ci FISH COMMUNITY SAMPLE Waterbody Location Station ID Date Bloclassificatlon CATHEYS CR US 221 AN 06/16/15 Good -Fair County 8 digit HUC Latitude Longitude Elevation (� Reference Site RUTHERFORD 03050105 35.459009 -81.978921 930 N❑ Level IV Ecoregion Drainage Area lmf) Stream Width (m) Stream Depth (m] Southern Inner Piedmont 13.3 7 1 0.3 Upstream NPDES Dischargers (? 1 MGD or < 1 MGD and within 1 mile) NPDES Number Volume (MGD) NGne _ Landuse (%) Forest Developed Impervious Cultivation Grass/Herb/Shrub Wetland Water Barren 1992 90.1 0.3 no data 8.1 no data 0.0 0.3 1.2 2001 69.9 3.6 0.2 12.0 8.3 0.1 0.8 3.1 2006 67.5 3.6 0.2 13.2 13.3 0.1 0.8 1.4 Water Quality Parameters 2004 2010 2015 Temperature (°C) 12.8 22.6 22.9 Dissolved Oxygen (mg/L) 10.5 7.9 7.2 Specific Conductance (pS/cm) 52 57 63 pH (s.u.) 6.7 6.4 6.0 Habitat Assessment Scores (max score) 2015 Channel Modification (5) 5 Instream Habitat (20) 12 Bottom Substrate (15) 3 Pool Variety (10) 6 Riffle Habitat (16) 7 Bank Erosion (7) 6 Bank Vegetation (7) 6 Light Penetration (10) 10 Left Riparian Score (5) 5 Right Riparian Score (5) 5 Total Habitat Score (100) 65 Water Clarity I Slightly turbid, but became extremely turbid when walking in the ch I Substrate: Sand, gravel Sample Date Sample ID Species Total NCIBI Score NCIBI Rating 06/16/15 2015-56 12 46 Good -Fair 06/10/10 2010-42 12 46 Good -Fair 03/23/04 2004-07 13 52 Good Data Analysis Watershed -- drains northern Rutherford County, west of the US 221 corridor; no NPDES permitted dischargers or municipalities in the watershed; tributaryto the Second Broad River. Habitat - moderate quality instream habitats; side coarse woody debris snags; infrequent stick and gravel riffies. Water Quality -- low flow; specific conductance typical for a Piedmont stream, has ranged from 52 pS/cm to 63 pS/cm during past three monitoring cycles. 2015 -- only one Intolerant Species present (Highback Chub), the intolerant species Fieryblack Shiner and Santee Chub were absent; decrease in the trophic metric scores (Percentage of Omnivores+Herbivores and Percentage of Insectivores) was offset by the increase in sunfish diversity (the addition of Green Sunfish and Bluegill) resulting in no net change in the NCIBI Score or NCIBI Rating. 2004-2015 - only 16 species known from the site, including 8 species of cyprinids, 3 Intolerant Species, 3 species of sunfish, 2 species of suckers, but just 1 species of darter; dominant species is the Piedmont Shiner (2004 and 2010) and the Bluehead Chub (2015) whose dominance increased two -fold since 2010 (from 21 % to 48%); Carolina Fantail Darter is the only species of darter that has been collected at this site, other darter species (i.e., Seagreen Darter, Tessellated Darter, and Piedmont Darter) along with the Greenfin Shiner and Northern Hog Sucker are not known or extremely rare from this part of the Second Broad River watershed, so the low darter diversity may be natural; some diversity metrics were consistently lower than expected compared to a reference site; re -colonization of this stream by species such as Greenfin Shiner, Fieryblack Shiner, Santee Chub, and Tessellated Darter following droughts may possibly be affected by the effluent from the downstream Town of Spindale's W WTP (Q„ = 4.5 MGD). Recommendation - continue basinwide monitoring of this site in 2020 to document any change in the landuse. Most Abundant Species Bluehead Chub (176, 48% Non -indigenous Species Green Sunfish (3) Imperiled Species None CATHEYS CREEK (HOLLANDS CREEK) WATERSHED HUC 030501050403 (Part of the Second Broad River Watershed) GENERAL WATERSHED DESCRIPTION Catheys Creek is a tributary to the Second Broad River. It is located in central Rutherford County and originates in a forested area north of the Town of Rutherfordton near the McDowell -Rutherford county line. The stream flows southeast until it reaches the Second Broad River, just north of Forest City. Catheys Creek, Mill Creek, Hollands Creek and Case Branch were all sampled during the most recent assessment period (Figure 9-1). Land use throughout the watershed is a mix of commercial and residential properties with agricultural (row crops and pasture) and forested land in the headwaters. WATER QUALITY OVERVIEW In addition to basinwide sampling, DWQ collected benthic and fish samples throughout the watershed in 2003 and 2004 as part of a special study for the Watershed Restoration Program (WRP), now the Ecosystem Enhancement Program (EEP) (NCDENR DWQ, August 2003 and NCDENR DWQ, April 2004). Chemical and physical parameters were also evaluated through ambient monitoring sites (December 2004). Data collected during these studies were evaluated and used to determine causes and sources of degradation and to develop a watershed management plan (August 2005). Sedimentation, point source pollution, stormwater runoff and historic mining activities were identified as the primary factors affecting watershed function in the Catheys Creek watershed. WATERSHED AT A GLANCE COUNTIES Rutherford MUNICIPALITIES Ruth, Rutherfordton, Spindale, Forest City PERMITTED FACILITIES NPDES WWTP: 3 NPDES Nondischarge: 0 NPDES Stormwater: 6 Animal Operations: 0 MONITORED STREAM MILES (AL) Total Streams: 32.2 mi Total Supporting: 17.8 mi Total Impaired: 8.6 mi Total Not Rated: 5.9 mi Several of the streams segments are supporting; however, portions of both Catheys and Hollands Creeks are Impaired in the aquatic life category. Mill Creek is also Impaired in the aquatic life category (Table 9-1). 9.1 .z i • a � /' fNJI / � a r rr . (D r� O a �\ O f� �� N A• �V W O v N W }a a C re AW co A A/ 0 D ".a r �;o 3 Cl)oll A fA Z Z � � � 0 � � Z co� TI 7. K �% ;u p N N� O O p O O 5 r. O N = G O R o `�• tQ S. G G .d► 10 n y fD W 2 -9' IQ N C O 7 (� N 7 C a N p `Z 0 >. >o N CD 3 N C) c X .mA V 1 N D N m n O z v W O a v X m c w Ul O O O w GI! Flow to Read this Document This document was written to correspond with our new Online Geographic Document Distribution (OGDD) tool using Google Earth". If you are unable to use Google Earth"", this document provides maps and associated water quality information and a discussion of water quality trends occurring in the watershed. Google Earth, is an independent software program which can be downloaded to a personal, business, and most local and state government computers; the program allows you to view satellite imagery of the earth's surface along with location identifiers. DWQ's Basinwide Planning Unit created a "transparency" add on layer to Google Earth' with basinwide water quality data, which allows a user to locate their watershed, pinpoint a waterbody and use support ratings, find a location of a permit and provides links to PDF watershed reports. For more information on how to download Google Earth'"" and DWQ's data visit DWQ's Basinwide Planning's OGDD website. Please contact Melanie Williams for more information at melanie.williams@ncmail.net or 919-807-6447. Impaired streams are those streams not meeting their associated water quality standards in more than 10 percent of the samples taken within the assessment period (January 1, 2002 through December 31, 2006) and impacted streams are those not meeting water quality standards in 7 to 9 percent of the samples. The Use Support report provides information on how and why water quality ratings are determined and DWQ's "Redbook" describes in detail water quality standards for each waterbody classification. For a general discussion of water quality parameters, potential issues, and rules please see "Supplemental Guide to North Carolina's Basinwide Planning: Support Document for Basinwide Water Quality Plans". TABLE 9-1: MONITORED STREAM SEGMENTS IN THE CATHEYS CREEK WATERSHED ASSESSMENT LENGTH 2O08 I R POTENTIAL STRESSORS DWQ UNIT NUM"FR STREAM NAME (MILES) CLASS. CAT. IMPAIRED IMPACTED (POTENTIAL SOURCES) SUBBASIN 9-41-13-(0.5) Catheys Creek 15.2 WS-V 2 - Fecal Coliform Bacteria 03-08-02 (Animal Operations) Habitat Degradation (General Agriculture/ Pasture, Stormwarer Runoff) 9-41-13-(6)a Catheys Creek 1.9 C 2 Habitat Degradation 03-08-02 (General Agriculture/ Pasture, Impervious Surface) 9-41-13-(6)b Catheys Creek 1.9 C 5 X Fecal Coliform Bacteria 03-08-02 Habitat Degradation (General Agriculture/ Pasture, Stormwarer Runoff) 9-41-13-3 Mill Creek 4.5 WS-V 5 X Habitat Degradation 03-08-02 (Impoundment) 9-41-13-7-(1) Hollands Creek 3.9 WS-V 3a - Habitat Degradation 03-08-02 (Impervious Surface) 9-41-13-7-(3)a Hollands Creek 0.7 C 2 Fecal Coliform Bacteria 03-08-02 Habitat Degradation (Impervious Surface, Natural Conditions, Stormwarer Runoff)' Natural Impacts (Stormwater Runoff) 9-41-13-7-(3)b Hollands Creek 2.2 C 5 X Habitat Degradation 03-08-02 (Impervious Surface, Stormwarer Runoff) k,9 41-13-7-4 Case Branch (Cox 1.9 C 3a - 03-08-02 1 Branch) "The 2008 IR Categories definitions can be found on the first page of Appendix 3-A 9.3 CURRENT STATUS OF IMPAIRED 8t IMPACTED WATERS Catheys Creek watershed as a whole shows signs of moderate functional degradation in terms of water quality, hydrology and habitat. Sedimentation was identified as a significant problem throughout the entire watershed, and when compared to the upstream (rural) areas of the watershed, nutrients, metals, fecal coliform bacteria and turbidity were higher at sites sampled within and downstream of Spindale. Field assessments also revealed stream channel and floodplain alterations from historic mining operations and the clearing of several large forested tracts were contributing to an increased amount of nonpoint source runoff and sedimentation. Several opportunities were identified for better management of land and water resources. A few of these are discussed under Local Initiatives, and all are listed in the Watershed Management Plan (EarthTech, August 2005). BIOLOGICAL MONITORING A total of six benthic sites were sampled in Catheys and Hollands Creeks in June 2003. The sites were sampled shortly after heavy rain events, and DWQ biologists noted that the stream water levels were high, indicating a recent rain event. Many of the streams were also turbid. In March 2004, a total of four fish sites were sampled in both creeks. DWQ biologists noted that habitat quality varied from very good to very poor depending on land use, geology, slopes, soils, and streamflow. Most low gradient streams around Spindale and Rutherfordton are extremely sandy, often lacking aquatic habitat areas. Higher gradient streams, or those in the more forested areas of the watershed, have a rocky substrate. CATHEYS CREEK Sites AB15 and AF1 are the most upstream sites in Catheys Creek watershed. They were selected to represent that portion of the watershed above the urban areas of Spindale and Rutherfordton where land use is a combination of agriculture and forest with some residential areas. Site AB15 received a Good -Fair benthic bioclassification. Site AF1 received a Good fish bioclassification. Embedded, sandy substrate and a lack of cobble -riffle habitats contributed to the poor instream habitat. Benthic samples were also collected on Catheys Creek upstream and downstream of the confluence with Hollands Creek. Site AB13 is upstream of the confluence and land use in the immediate vicinity is a mix of forest, agriculture, and residential properties. SiteAB13 received a Good -Fair benthic bioclassification. Major habitat concerns included eroding streambanks and the lack of instream habitat (i.e., infrequent pools). Sites AB14 and AF3 are downstream of the confluence. These sites are also downstream of permitted WWTP facilities and approximately 1.5 miles upstream from the confluence with the Second Broad River. Land use is a mix of hayfields (inactive pasture), residential properties and forestland. In June 2003, DWQ biologists noted that the streambanks had been severely scoured (likely during recent rain events), and many were eroding. Site AB14 received a Good -Fair, an improvement from the Fair it received in 2000. Site AF3 received a Fair, an improvement from the Poor it received in 2000. Even though both sites improved, this section of Catheys Creek (AU# 9-41-13-(6)b) is still Impaired for aquatic life due to the Fair fish bioclassification. HOLLANDS CREEK Site AB26 is the most upstream site sampled on Hollands Creek. Stream width here was less than 3 meters (drainage area less than 3 square miles); therefore, a bioclassification could not be assigned to this site (Not Rated). A few rubble - boulder riffles were found, but most of the streambed was sand and red silt. DWQ biologists noted that much of the streambed silt likely originated from streambank erosion. Even though site AB26 was Not Rated, biologists believe that the low taxa richness and abundance suggest water quality and/or habitat problems. The Catheys Creek Technical Advisory Committee identified the headwaters of Hollands Creek as a focus area for stream restoration in the Catheys Creek watershed management plan published in August 20C Sites AB27 and AF2 had a habitat that was quite different from other sites on either Hollands or Catheys Creeks. Most streams throughout the river basin are very sandy with silt, but this stream segment consisted of a mostly boulder and rubble substrate with moderate gradient plunge pools and rocky runs. This reflects a change in geology rather than a change in land use. Site AB27 received a Good -Fair benthic bioclassification. Site AF2 received a Good -Fair fish bioclassification. During the time of fish sampling, DWQ biologists observed periphyton (algae) covering all of the instream substrate. Periphyton growth is an indicator of nutrient enrichment from point source and/or nonpoint source runoff. 9.4 Downstream, the boulder -rubble substrate found at sites AB27 and AF2 was replaced by an unstable sand -silt substrate at sites AB28 and AF4. Site AB28 received a Good -Fair benthic bioclassification. No significant changes in water quality were identified; however, the Good -Fair was an improvement from the Fair bioclassification this site received in 2000. Site AF4 received a Fair fish bioclassification. Instream habitats were extremely poor and included one plunge pool created by concrete slabs used for channel stabilization. Streambanks were highly eroded, and the riparian zone consisted primarily of lawns with a few trees. This section of Hollands Creek (AU# 9-41-13-7-(3)b) remains Impaired in the aquatic life category. MILL -REEK Mill Creek is a tributary to Catheys Creek and was sampled in an effort to find a high quality site in the upper part of the watershed. DWQ biologists noted that the stream had good habitat characteristics, but only eleven species were collected. Many of these were pollution tolerant species. A high water temperature (220C/720F) recorded during the time of sampling suggested an upstream impoundment or discharge of some kind. Although the biologists did not note a pond, impoundment or discharge pipe during the time of sampling, a review of 1993 land use maps indicated that there is a pond in the upper part of the Mill Creek sub -watershed. Site AB34 received a Fair benthic bioclassification. Mill Creek (AU#.9-41-13-3) is Impaired in the aquatic life category. The Catheys Creek Technical Advisory Committee identified Mill Creek as a focus area for stream restoration in the Catheys Creek watershed management plan published in August 2005. Ir' - -E BRANCH Case Branch (also known as Cox Branch) is a tributary to Hollands Creek and drains the northern portion of Spindale. Land use consists of residential and commercial properties. It was sampled as an urban reference stream. Biologists expected to find severe water quality problems. Conductivity was high (124 µmhos/cm), but habitat was surprisingly good and a few pollution intolerant species were identified. Stream width here was less than 3 meters; therefore, a bioclassification could not be assigned to site AB12 (Not Rated). Case Branch was also identified as a potential problem area during the assessment phase of EEPs local watershed planning process. In May 2004, DWQ and EEP staff walked much of Case Branch and its tributaries to pinpoint pollution sources. Problem areas that were identified include a DOT stormwater pond near partially uncovered salt piles and construction materials (i.e., metal, bricks, concrete, and other refuse) in two unnamed headwater tributaries. DWQ and EEP staff also noted that both unnamed headwater tributaries had deeply incised streambanks (15 to 20 foot high) (NCDENR DWQ, November 2004). The Catheys Creek Technical Advisory Committee identified Case Branch as a focus area for stream restoration in the Catheys Creek watershed management plan published in August 2005. CHEMICAL- PHYSICAL PARAMETERS To provide supplemental information to support the EEP local watershed planning efforts in the Catheys Creek watershed, DWQ conducted chemical -physical monitoring at seven sites - two on Catheys Creek, one on Hollands Creek, and five on unnamed tributaries. Periodic sampling was conducted under baseflow conditions at five sites from January to August 2004. Sampling was also conducted under stormflow conditions on three different occasions during the same time period. Baseflow is defined as conditions present at least 48 hours after a measurable precipitation event. Stormflow samples are collected during the rising stream stage event, during or after a precipitation event. Fecal coliform bacteria, suspended residue, total phosphorus, total Kjeldahl nitrogen (TKN), ammonia nitrogen, copper, zinc, manganese, iron, and aluminum were consistently higher in stormwater samples than samples collected under baseflow conditions. These results are consistent with other studies and illustrate how sediment and other pollutants can enter a waterbody (December 2004). Sampling also indicates that chromium, mercury and copper may be metals of concern to this watershed, particularly around areas known for historic gold mining operations. Mercury used in the mining process may remain in the floodplain soils and in the streambeds. Further testing (i.e., sediment toxicity testing) is needed to determine if the levels are harmful to aquatic life. Fish tissue samples are also suggested in order to establish the level of mercury and other metals in the fish thus allowing the determination of a human health hazard for fish consumption (NCDENR DWQ, December Under baseflow conditions, ambient monitoring showed that the water quality standard for fecal coliform bacteria was exceeded at five sites. Current methodology requires additional bacteriological sampling for streams with a geometric mean greater than 200 colonies/100 ml or when concentrations exceed 400 colonies/100 ml in more than 20 percent of the samples. These additional assessments are prioritized such that, as monitoring resource become available, the 9.5 highest priority is given to those streams where the likelihood of full -body contact recreation is greatest. None of the waters in the Catheys Creek watershed are classified for primary recreation (Class B); therefore, it was not prioritized for additional sampling during this assessment period. Potential sources of elevated bacteria levels include failing septic systems, straight pipes and nonpoint source runoff from pasture and foresdands (NCDENR DWQ, December 2004). SIGNIFICANT NON-COMPLIANCE ISSUES No significant compliance issues were identified for the permitted facilities in the Catheys Creek watershed; however, two facilities received several notices of violations (NOVs) during the last two years of the assessment period. The White Oak Manor WWTP (Permit NC0030139) received NOVs for exceedences in TSS and fecal coliform bacteria. The facility is permitted to discharge 0.015 million gallons per day (MGD) to Catheys Creek. The most recent inspection (August 2006) resulted in an NOV being issued for improper equipment operation (i.e., grease removal and secondary clarifier sludge removal). Solids were also observed in the streambed below the outfall. The United World Mission WWTP (Permit NC0032174) received NOVs for exceeding the permit limit for ammonia. It is permitted to discharge 0.02 MGD to Cherry Creek. Technical assistance provided by DWQstaff (June 2007) determined that the violation was due to a combination of regular maintenance and improper chemical treatment after the maintenance was performed. DWQAsheville Regional staff will continue to work with both facilities to ensure that the facilities remain in full compliance with permit limits. LOCAL INITIATIVES AND RECOMMENDATIONS WATERSHED MANAGEMENT PLAN In collaboration with local stakeholders and resource professionals, EEP, the Watershed Education for Communities and Officials (WECO) and Earth Tech were able to develop the Catheys Creek Watershed Management Plan. The planning efforts included public meetings, the formation of a technical advisory committee (TAC), spatial analysis and field sampling to accurately characterize watershed issues. Follow the link above for a full copy of the report. Sedimentation, point source pollution, stormwater runoff and historic mining activities were identified as the primary factors affecting watershed function in the Catheys Creek watershed. Accelerated stream channel erosion was observed at many sites and was attributed to past channelization and livestock access in the upper reaches and high -velocity flows from stormwater runoff in the lower reaches. Drainage from large pasture areas with livestock, faulty/vandalized sewer collection and septic systems and straight piping are believed to be contributing to high fecal levels. Chromium, mercury and copper may be a concern due to historic gold mining operations throughout the watershed. Because of the potential for metal contamination in the floodplain soils and streambeds, specific site investigations should include interviews to determine the history of mining on the property as well as visual inspections for clues such as spoil piles and channel alterations. Typical stream channel and floodplain restoration projects can cause tremendous disturbance to the streambed and floodplain soils and could potentially release buried sediment -bound metals into the environment. Toxicity tests are also recommended to determine impacts on the aquatic life. As part of the planning process, the Catheys Creek watershed was divided into fourteen sub -watersheds. By using geographic data (i.e., land cover, soils, terrestrial habitat and hydrography), water quality data, interviews and visual observations, it allowed for more specific watershed characterization and identification of stressors and sources on the sub -watershed scale. The sub -watersheds were ranked based on water quality, hydrology and habitat function. Four sub - watersheds were identified for focused restoration plans and included the Mill Creek sub -watershed, the William Branch sub -watershed, the headwaters of Hollands Creek sub -watershed, and the Case Branch sub -watershed. Causes and sources were identified along with goals, strategies and BMPs; thus resulting in specific recommendations for these four sub -watersheds. Many of the goals included reducing stormwater runoff, reducing the sediment load, and reducing the nitrogen, phosphorus and metals entering the surface waterbody. Many of the BMPs included livestock exclusion and buffer restoration, streambank stabilization, bioretention areas, construction wetlands, and wet detention ponds (EarthTech, August 2005). 9.6 REFERENCES EarthTech. August 2005. Catheys Creek Technical Watershed Assessment - Watershed Management Plan. Prepared for the NC Ecosystem Enhancement Program (EEP). EarthTech. February 2005. Catheys Creek Critical Area Report Summary for the Technical Advisory Committee. Prepared for the NC Ecosystem Enhancement Program (EEP). EarthTech. February 2004. Catheys Creek Technical Watershed Assessment - Initial Waterhsed Characterization and Sampling Plan. Prepared for the NC Ecosystem Enhancement Program (EEP). NCDENR Division of Water Quality. December 2004. Water Quality Monitoring in Catheys Creek and Tributaries in the Broad River Basin: Summary Results January - August 2004. Prepared for the NC Ecosystem Enhancement Program (EEP). NCDENR Division of Water Quality. November 2004. Technical Brief: Case Branch Investigation. Prepared for the NC Ecosystem Enhancement Program (EEP) and Division of Water Quality (DWQ). NCDENR Division of Water Quality. April 2004. Fish Community Assessments of Catheys and Hollands Creeks. Prepared by the Biological Assessment Unity (BAU). NCDENR Division of Water Quality. August 2003. Catheys Creek/Hollands Creek Watershed Restoration Program Study. Prepared by the Biological Assessment Unity (BAU). NCSU Watershed Education for Community and Local Officials (WECO). Winter 2005. Catheys Creek Newsletter. NCSU Watershed Education for Community and Local Officials (WECO). Spring 2005. Catheys Creek Newsletter. 9.7 Spindale WWTP Effluent Monitoring NCO020664 Flow Mo. Avg. Limit 3.5 3.0 — 2.5 p 2.0 � 1.5 • � • + 1.0 ••r ••Mo••••00 0 a S.M••r••••••••••••• • • • 0.5 • 0.0 s ._ oti° otio' oti�O otio otio otio otio' otio otio otiC' ,� y\'Y titi�y\� Biological Oxygen Demand (BOD) Wk Avg. Mo. Avg WA Limit MA Limit 50 45 40 35 M 30 ! on 25 20 15 +-$•a� 10 5 40 A; otio otio' 0, (0 oti6 otio otio Is, otio' otio otio � y\`ti �\���ti \�\ti �\�,v�ti t\yo�ti yo\��\ti h�tih\� titi�y\� Total Suspended Solids (TSS) • Wk Avg. ♦ Mo. Avg WA Limit MA Limit 50 45 40 35 30 - - - - - - - - - - - - - - - - - - - - -0 -, ■ E 20 • • i �' • ♦ ! • 15 15� • + 44 r 0 otia otio' otio . V otio otio 00 otio otio' 160, �\o�ti -1\'ti�ti Summary Statistics n 1441 Avg 0.86 SD 0.54 Min 0.02 Max 7.10 Summary Statistics_ n 988 Avg 6.5 SD 7.6 Min 0.0 Max 48.0 Summary Statistics n 988 Avg 11.2 SD 6.9 Min 2.5 Max 37.0 GB Perlmutter, rev. 9/9/2019 Spindale WWTP Effluent Monitoring NCO020664 Ammonia-N (NH3-N) Wk Avg. Mo. Avg WA Limit MA Limit 35 30 25 20 E 15 10 — — — ——— — — — — — — — — — — - 5 0—� O,� O,O O,O O,1 O,1 ��\ti\ti Dissolved Oxygen (DO) Effluent Limit 14 12 10 ♦+ M J g bn E 6 4 2 0 - O,� O,h O,O O,6 O,A -S"y\L\��\'L\O\'L\�,L\'L\10\`L Fecal Coliform Wk Avg. Mo. Avg WA Limit MA Limit 1,000 ___■__ E __--� s�- - - - 100-•1 10s4�■ ■� AS • It' V O,O O,O y�\�,�\ti y � C�\�ti\ti �\yo\i yo\�,�\ti h\1h\ti y�\ti\ti Summary Statistics n 989 Avg 1.3 SD 2.3 Min 0.0 Max 10.2 Summary Statistics n 987 Avg 8.2 SD 1.2 Min 6.2 Max 12.9 Summary Statistics n 988 Geomean 16.5 Min 1.0 Max 365.0 GB Perlmutter, rev. 9/9/2019 Spindale WWTP Effluent Monitoring NCO02O664 Total Residual Chlorine (TRC) Effluent Limit Compliant 60 50 i 40 ♦ ♦ f 30 L` ♦-- 20 • 10 • 0 oy°` oti5 °tio °ti° °tip oti� °tip °tip °tie otia titi\SAT �\y4T ti\\� 4� pH Effluent L. Limit i U. Limit 9.5 9.0 - 8.5 8.0 A AL 7.5 <^ 7.0 ♦ • 6.5 = ♦ ♦ « 6.0 - - - - . - - - - - - - - - - ♦ - - - V - 5.5 5.0 4'0 Temperature 30 25 s 20 15 10 5 0 e O,h °10 °10 Otis titi\ 1\\ y\ 4 o,\ \ '°\ `'\ ti Summary Statistics n 988 Avg 18.3 SD 7.7 Min 0.0 Max 49.0 Summar Statistics n 988 Avg 7.3 SD 0.3 Min 5.9 Max 8.3 Statistics .Summary n 988 Avg 18.2 SD 6.2 Min 1.7 Max 28.5 GB Perlmutter, rev. 9/9/2019 Spindale WWTP Effluent Monitoring NCO020664 Total Nitrogen 35 30 25 ` 20 E 15 10 5 0 \�°y��O y LO,(O y°\ti h\y ° yti\ Total Phosphorus 6 5 4 J Sao 3 E 2 1 0 %)1 h\ti°yh 6 (0 Total Total Copper 80 70 60 50 J 40 30 20 10 0 o y Summary Statistics n 17 Avg 10.98 SD 8.37 Min 2.52 Max 31.93 Summary Statistics n 17 Avg 3.09 SD 1.39 Min 0.09 Max 4.96 Summary Statistics n 17 Avg 37 SD 17 Min 10 Max 69 GB Perlmutter, rev. 9/9/2019 Spindale WWTP Effluent Monitoring NCO020664 Total Zinc 250 200 150 J to 100 50 0 - -� - - O,� otih o,� 6N O,� o,� O,� y�\��\ti A Chloride 450 400 350 300 250 00 E 200 150 100 50 0 -ZIP 0otio o'� otiA 00 o) oti0' a\tio\~ do\tip\� y\tih\� titi\y\� Summary Statistics n 17 Avg 96 SD 58 Min 9 Max 218 Summary Statistics n 15 Avg 177 SD 85 Min 42 Max 385 GB Perlmutter, rev. 9/9/2019 O qT rn to 00 01 Ln 00 N to O L•n tD to tD m Ol Nt -i m V h ri N M v N N h tD cc C Qn (n O a cn 00 01 O � Ei C G O L Ln 0 I m Q Q_C Q O CC� y C Q� C C Q c) Z C .-. Ln N m Ln --t O tD e4 N r4 M m O w ri 00 m Ln h O -! .00 h ri Ln m 00 m h m O iF m ri m O m e-I In ri m M N tD L6 N 00 ri 00 h N N 4 Ln � 00 G1 01 41 O1 Q1 01 01 01 01 00 01 00 00 � Ql 01 O1 ci00 00 00 00 C1 of rq 00 00 `� 00 ri r-I (n (n r-I 01 OM O L � r 00 00 4 O L w 0) ?& `V 0) cn 0) a, ri 0) r�-I N N N N O N O O N lV C L0 Ln 0J L L _ ++ > �` N N LL LN Z Q LL Q N O O w LL N z o L _T 0 o M h 00 00 C1 m 0n m O " 00 h m 00 m M tD CO 'fit Ln tD 01 00 N 00 h N lD tD N O0 N Ln to M h ei r-I•en h h ri m * tD w 00 ch Ln D1 O h CC O O et O M tO E O1 01 O�1 M OCi M1 m cn cn m M M m m cn cn 4m (n W 00 00 00 Ln QN1 m w M -t 01 Q1 0�0 Ln Ln w Q ~ Ln LD Ln .mi•I tD e0-I tD tD -1 tD � rj h h rhi h h cd CN �• �` i w w w'D rirh-I `� ` rl CO C 3 E C C N 3 L •Ltu >• .l? f0 M U �+ N H 0) -0 - L Q o y aJ Q Q U41 > u a Q 3 Q u > u c 0 N Z o -''� N O Z p, LL Q Ln 0 Z o to N G1 u -q N tD ri m mt w r-I q t m w ri M r-I O r-1 ri mI;r� m M 00 [t 00 -e O m O tD N tD 00 01 01 m m m m m Ln rri 00 00 h 00 ci 01 01 co Q1 t71 Q1 01 M M O M M M M M M M C i (n M M M 3 00 00 00 00-1 00 00 O1 ai L t ? )o 00 Do 00 L L L `-4 0) Ql Q1 ri L r I rq cn ei N O O ri e-1 0) )C L t r� l (3) r♦ 0) +j i 0I i N N ON N O O i cu L •Q M C 3 CU 0 E C 3 3 i L to C �` 3 Q f0 M U• L A 6 4. ++ 'Q LL Q N O p w � 0) Q Q Q U O N LO 0J Q Vf Z O LL Lii Z O LL p L E t � m [t M m m m to tD N tD h Ln ri Ln Ln ri h cn Ln N tt h tD 00 ri 00 m "I m co O v t Ln w m O m Ln Ln w 00 m m 00 P. ri m N rj N N M N O Ln N N lD DD O) 01 01 h 00 01 01 L71 M 00 h 00 00 00 01 01 Q1 h M N Ln 00 4 Ln 00 h Ln iF tD Ct L D1 m 01 01 01 01 01 M a1 01 01 01 01 C1 Q1 01 C1 01 O1 C1 01 m (n cn a1 cn M m > > OLnLn Ln tD :D m Ln Ln r-I ri lD W tD tD ei t0 r�i e�-1 h h rh-1 h �h..i O C t/f w -0 -D i cc L ri ei �+ 0) i 0J OJ 00 ri ri h N ` L L V Q C- O w M OJ Q Q U> u m 01 Q 3 Q u> u c Z Ln�ZO�LL Ln zpLL Q )0Z ) Spindale WWTP Instream Monitoring NC0020664 00300 - Oxy en Dissolved DO m L Month Day Year Date Upstream Dnstream Effluent Standard 6 1 2016 6/1/2016 8.2 8.3 7.00 5.0 6 2 2016 6/2/2016 8.1 8.3 7.01 5.0 6 6 2016 6/6/2016 7.9 7.9 6.42 5.0 6 7 2016 6/7/2016 8 8 6.62 5.0 6 8 2016 6/8/2016 8.3 8.4 6.58 5.0 6 13 2016 6/13/2016 8.1 8.1 6.59 5.0 6 14 2016 6/14/2016 8.2 8.2 7.15 5.0 6 15 2016 6/15/2016 7.9 7.9 7.36 5.0 6 20 2016 6/20/2016 8.5 8.4 6.31 5.0 6 21 2016 6/21/2016 8.3 8.4 6.87 5.0 6 22 2016 6/22/2016 8.1 8.1 6.76 5.0 6 27 2016 6/27/2016 8.1 8.2 6.8 5.0 6 28 2016 6/28/2016 8 8 6.81 5.0 6 29 2016 6/29/2016 8.1 8.1 6.89 5.0 7 5 2016 7/5/2016 7.9 7.9 7.48 5.0 7 6 2016 7/6/2016 7.8 7.9 7.04 5.0 7 7 2016 7/7/2016 8.1 8.1 7.22 5.0 7 11 2016 7/11/2016 7.9 8.2 7.17 5.0 7 12 2016 7/12/2016 8 8 7.19 5.0 7 13 2016 7/13/2016 8.2 8.2 7.13 5.0 7 18 2016 7/18/2016 8.1 8.1 7.01 5.0 7 19 2016 7/19/2016 8.1 8 6.95 5.0 7 20 2016 7/20/2016 8.3 8.3 7.12 5.0 7 25 2016 7/25/2016 9.4 9.5 8.25 5.0 7 26 2016 7/26/2016 7.8 7.9 6.79 5.0 7 27 2016 7/27/2016 7.6 7.7 6.74 5.0 8 1 2016 8/1/2016 8.1 8.13 6.84 5.0 8 2 2016 8/2/2016 7.72 7.7 6.58 5.0 8 3 2016 8/3/2016 7.92 7.98 6.71 5.0 8 8 2016 8/8/2016 7.65 7.67 7.07 5.0 8 9 2016 8/9/2016 7.76 7.8 6.85 5.0 8 10 2016 8/10/2016 7.79 7.82 6.87 5.0 8 15 2016 8/15/2016 7.87 7.84 6.7 5.0 8 16 2016 8/16/2016 7.96 7.92 6.67 5.0 8 17 2016 8/17/2016 6.89 8.06 6.89 5.0 8 22 2016 8/22/2016 8.06 8.02 6.71 5.0 8 23 2016 8/23/2016 8.07 8.05 6.8 5.0 8 24 2016 8/24/2016 8.19 8.09 6.82 5.0 8 29 2016 8/29/2016 8.47 8.43 6.98 5.0 8 30 2016 8/30/2016 8.42 8.28 6.94 5.0 8 31 2016 8/31/2016 8.23 8.13 6.93 5.0 9 6 2016 9/6/2016 8.25 8.15 6.86 5.0 9 7 2016 9/7/2016 8.26 8.21 6.92 5.0 9 8 2016 9/8/2016 8 7.95 6.68 5.0 9 12 2016 9/12/2016 8.19 8.13 6.77 5.0 Page 1 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00300 -Oxygen, Dissolved (DO] lrt2a/t1 Month Day Year Date Upstream Dnstream Effluent Standard 9 13 2016 9/13/2016 8.29 8.19 7.1 5.0 9 14 2016 9/14/2016 8.36 8.26 6.97 5.0 9 19 2016 9/19/2016 7.96 7.83 6.7 5.0 9 20 2016 9/20/2016 8.18 8.15 6.94 5.0 9 21 2016 9/21/2016 8.61 8.74 7.37 5.0 9 26 2016 9/26/2016 8.09 7.99 6.92 5.0 9 27 2016 9/27/2016 8.05 8 7.3 5.0 9 28 2016 9/28/2016 8.27 8.24 7.29 5.0 10 4 2016 10/4/2016 8.48 8.37 7.55 5.0 10 11 2016 10/11/2016 8.88 9.07 8.02 5.0 10 18 2016 10/18/2016 8.81 9.03 7.79 5.0 10 25 2016 10/25/2016 9.56 9.5 8.39 5.0 11 1 2016 11/1/2016 8.06 8.36 8.4 5.0 11 8 2016 11/8/2016 9.83 9.34 8.52 5.0 11 15 2016 11/15/2016 9.36 9.73 9.27 5.0 11 22 2016 11/22/2016 10.6 10.6 8.92 5.0 11 29 2016 11/29/2016 9.85 9.37 9.31 5.0 12 6 2016 12/6/2016 9.64 9.96 9.07 5.0 12 13 2016 12/13/2016 10.4 9.79 10 5.0 12 20 2016 12/20/2016 10.2 9.74 9.21 5.0 12 29 2016 12/29/2016 10.2 10.1 9.64 5.0 1 3 2017 1/3/2017 9.94 9.8 10 5.0 1 10 2017 1/10/2017 11.2 11.2 10.2 5.0 1 17 2017 1/17/2017 9.6 9.51 8.96 5.0 1 24 2017 1/24/2017 9.65 9.54 8.77 5.0 1 31 2017 1/31/2017 10.7 10.8 8.7 5.0 2 7 2017 2/7/2017 10.1 9.56 9.4 5.0 2 14 2017 2/14/2017 10.1 9.98 7.92 5.0 2 21 2017 2/21/2017 9.42 9.4 6.3 5.0 3 8 2017 3/8/2017 12 12.1 8.31 5.0 3 14 2017 3/14/2017 9.92 10.3 8.88 5.0 3 21 2017 3/21/2017 9.49 9.41 8.48 5.0 3 28 2017 3/28/2017 10.1 14.1 7.87 5.0 4 4 2017 4/4/2017 8.9 8.68 6.75 5.0 4 12 2017 4/12/2017 8.94 8.82 7.85 5.0 4 18 2017 4/18/2017 8.56 8.51 8.07 5.0 4 25 2017 4/25/2017 9.09 8.98 8.33 5.0 5 2 2017 5/2/2017 8.7 8.6 7.7 5.0 5 9 2017 5/9/2017 9 9.1 7.9 5.0 5 16 2017 5/16/2017 8.5 8.4 7.5 5.0 5 23 2017 5/23/2017 8.1 8.1 7.4 5.0 5 30 2017 5/30/2017 8.1 8.1 7 5.0 6 1 2017 6/1/2017 9.14 9.26 7.43 5.0 6 2 2017 6/2/2017 8.04 8.26 6.69 5.0 6 5 2017 6/5/2017 8.05 8.02 6.78 5.0 Page 2 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00300 - Oxygen, D►ssolved (DO) (maIL) Month Day Year Date Upstream Dnstream Effluent Standard 6 6 2017 6/6/2017 10.52 10.46 8.82 5.0 6 7 2017 6/7/2017 12.49 12.62 10.15 5.0 6 12 2017 6/12/2017 9.95 10.11 8.18 5.0 6 13 2017 6/13/2017 8.31 8.44 7 5.0 6 14 2017 6/14/2017 7.85 7.98 7 5.0 6 19 2017 6/19/2017 8.48 8.57 7.01 5.0 6 20 2017 6/20/2017 7.87 7.85 6.5 5.0 6 21 2017 6/21/2017 7.76 7.61 6.51 5.0 6 26 2017 6/26/2017 7.4 7.4 7 5.0 6 27 2017 6/27/2017 7.2 7.5 7.04 5.0 6 28 2017 6/28/2017 7.5 7.5 8.31 5.0 7 3 2017 7/3/2017 9.63 9.57 9.57 5.0 7 5 2017 7/5/2017 7.89 7.84 6.57 5.0 7 6 2017 7/6/2017 8.21 8.17 6.52 5.0 7 10 2017 7/10/2017 8.4 8.09 6.52 5.0 7 11 2017 7/11/2017 7.91 7.5 6.57 5.0 7 12 2017 7/12/2017 8.7 8.32 6.51 5.0 7 17 2017 7/17/2017 8.69 8.69 7.09 5.0 7 18 2017 7/18/2017 9.41 9.27 7.66 5.0 7 19 2017 7/19/2017 7.78 7.57 7.02 5.0 7 24 2017 7/24/2017 7.74 7.61 7 5.0 7 25 2017 7/25/2017 7.95 7.84 7.06 5.0 7 26 2017 7/26/2017 7.96 9.09 7.52 5.0 7 31 2017 7/31/2017 8.36 8.36 6.52 5.0 8 1 2017 8/1/2017 8.35 8.3 6.82 5.0 8 2 2017 8/2/2017 8.42 8.48 7.27 5.0 8 7 2017 8/7/2017 7.7 7.73 7.33 5.0 8 8 2017 8/8/2017 7.88 7.85 7.09 5.0 8 9 2017 8/9/2017 8.52 8.56 7.47 5.0 8 14 2017 8/14/2017 10.18 10.09 7.05 5.0 8 15 2017 8/15/2017 7.31 7.33 7 5.0 8 16 2017 8/16/2017 7.83 7.73 6.88 5.0 8 21 2017 8/21/2017 8.42 8.54 7.52 5.0 8 22 2017 8/22/2017 7.97 7.94 7.03 5.0 8 23 2017 8/23/2017 8.16 8.17 7.15 5.0 8 28 2017 8/28/2017 9.25 9.29 8.08 5.0 8 29 2017 8/29/2017 9.3 9.38 8.55 5.0 8 30 2017 8/30/2017 10.23 10.35 9.32 5.0 9 5 2017 9/5/2017 8.72 8.67 7.82 5.0 9 6 2017 9/6/2017 8.5 8.43 7.84 5.0 9 7 2017 9/7/2017 9.73 9.65 8.68 5.0 9 11 2017 9/11/2017 11.95 11.43 10.22 5.0 9 12 2017 9/12/2017 11.3 11.26 10.47 5.0 9 13 2017 9/13/2017 9.75 9.75 8.96 5.0 9 18 2017 9/18/2017 8.36 8.33 7.25 5.0 Page 3 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00300 - Ox err Dissolved DO m L Month Day Year Date Upstream Dnstream Effluent Standard 9 19 2017 9/19/2017 9.96 9.86 8.56 5.0 9 20 2017 9/20/2017 10.19 10.14 8.56 5.0 9 25 2017 9/25/2017 9.49 9.32 7.71 5.0 9 26 2017 9/26/2017 8.97 8.75 7.41 5.0 9 27 2017 9/27/2017 8.12 7.85 6.63 5.0 10 3 2017 10/3/2017 7.4 7.3 7.2 5.0 10 10 2017 10/10/2017 7.2 7.1 6.72 5.0 10 17 2017 10/17/2017 7.3 7.3 6.9 5.0 10 24 2017 10/24/2017 6.9 7 7.69 5.0 10 31 2017 10/31/2017 7.5 7.4 8.21 5.0 11 7 2017 11/7/2017 9.92 9.74 9.15 5.0 11 14 2017 11/14/2017 11.02 10.87 9.18 5.0 11 21 2017 11/21/2017 11.52 11.48 9.41 5.0 11 28 2017 11/28/2017 11.65 11.58 9.49 5.0 12 5 2017 12/5/2017 10.85 10.83 8.28 5.0 12 12 2017 12/12/2017 11.98 12.06 10.22 5.0 12 19 2017 12/19/2017 11.29 11.31 10.26 5.0 12 28 2017 12/28/2017 12.48 12.2 10.73 5.0 1 2 2018 1/2/2018 13.5 13.92 11.95 5.0 1 8 2018 1/8/2018 13.2 12.6 11.65 5.0 1 16 2018 1/16/2018 11.9 12.49 10.03 5.0 1 22 2018 1/22/2018 11 10.77 10.05 5.0 1 29 2018 1/29/2018 9.9 10.03 9.12 5.0 2 5 2018 2/5/2018 10.11 9.67 8.95 5.0 2 12 2018 2/12/2018 9.35 9.7 9.05 5.0 2 19 2018 2/19/2018 8.2 7.85 7.9 5.0 2 26 2018 2/26/2018 8.03 7.88 7.53 5.0 3 5 2018 3/5/2018 9.1 8.72 8.35 5.0 3 13 2018 3/13/2018 9.87 9.64 9.14 5.0 3 20 2018 3/20/2018 9.81 9.78 9.55 5.0 3 27 2018 3/27/2018 9.19 8.86 8.69 5.0 4 3 2018 4/3/2018 9.49 9.2 8.37 5.0 4 9 2018 4/9/2018 9.64 9.85 8.92 5.0 4 16 2018 4/16/2018 9.24 8.95 8.67 5.0 4 23 2018 4/23/2018 9.45 9.25 9.08 5.0 4 30 2018 4/30/2018 8.79 8.78 8.36 5.0 5 7 2018 5/7/2018 9.13 9.22 9.63 5.0 5 14 2018 5/14/2018 8.39 8.42 7.63 5.0 5 21 2018 5/21/2018 9.27 9.04 8.51 5.0 5 28 2018 5/28/2018 8.02 8.02 5.0 6 4 2018 6/4/2018 8.15 8.43 7.7 5.0 6 5 2018 6/5/2018 8.41 8.33 7.62 5.0 6 6 2018 6/6/2018 9.28 9.22 8.02 5.0 6 11 2018 6/11/2018 9.03 9.04 8.04 5.0 6 12 2018 6/12/2018 8.98 8.94 8.05 5.0 Page 4 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00300 - Oxycgen, Dissolved (DO) {Mglk Month Day Year Date Upstream Dnstream Effluent Standard 6 13 2018 6/13/2018 8.35 8.39 7.57 5.0 6 18 2018 6/18/2018 8.6 8.35 8.35 5.0 6 19 2018 6/19/2018 8.41 8.2 7.5 5.0 6 20 2018 6/20/2018 8.95 8.91 9.07 5.0 6 26 2018 6/26/2018 7.79 7.6 7.35 5.0 6 27 2018 6/27/2018 7.92 7.81 7.22 5.0 6 28 2018 6/28/2018 8.03 7.94 7.1 5.0 7 2 2018 7/2/2018 7.63 7.59 7.2 5.0 7 3 2018 7/3/2018 7.7 7.72 7.31 5.0 7 5 2018 7/5/2018 8.52 8.36 7.42 5.0 7 9 2018 7/9/2018 8.42 8.41 7.6 5.0 7 10 2018 7/10/2018 8.55 8.57 7.82 5.0 7 11 2018 7/11/2018 8.18 8.23 7.55 5.0 7 16 2018 7/16/2018 7.63 7.68 7.24 5.0 7 17 2018 7/17/2018 8.19 7.77 7.18 5.0 7 18 2018 7/18/2018 7.72 7.6 7.78 5.0 7 23 2018 7/23/2018 8.05 8.14 7.48 5.0 7 24 2018 7/24/2018 7.97 7.92 7.41 5.0 7 25 2018 7/25/2018 8.07 7.97 7.55 5.0 7 30 2018 7/30/2018 8.42 8.37 7.98 5.0 7 31 2018 7/31/2018 8.08 8.1 7.68 5.0 8 1 2018 8/1/2018 8.23 8.19 7.63 5.0 8 6 2018 8/6/2018 7.7 7.64 7.26 5.0 8 7 2018 8/7/2018 7.75 7.76 7.26 5.0 8 8 2018 8/8/2018 7.78 7.72 7.18 5.0 8 13 2018 8/13/2018 7.76 7.78 7.3 5.0 8 14 2018 8/14/2018 8.22 8.16 7.61 5.0 8 16 2018 8/16/2018 7.9 8.08 7.4 5.0 8 20 2018 8/20/2018 7.71 7.72 7.98 5.0 8 21 2018 8/21/2018 8.05 8.03 7.66 5.0 8 22 2018 8/22/2018 8.55 8.43 8.02 5.0 8 27 2018 8/27/2018 7.94 7.89 7.72 5.0 8 28 2018 8/28/2018 9.16 9.15 8.56 5.0 8 29 2018 8/29/2018 7.9 7.78 6.15 5.0 9 4 2018 9/4/2018 7.63 7.57 7.17 5.0 9 5 2018 9/5/2018 7.62 7.56 7.15 5.0 9 6 2018 9/6/2018 7.57 7.58 7.02 5.0 9 10 2018 9/10/2018 7.95 7.9 7.67 5.0 9 11 2018 9/11/2018 7.91 7.83 7.5 5.0 9 12 2018 9/12/2018 8.42 7.4 7.95 5.0 9 17 2018 9/17/2018 7.78 7.56 6.6 5.0 9 18 2018 9/18/2018 7.78 7.67 7.17 5.0 9 19 2018 9/19/2018 7.92 7.89 7.26 5.0 9 24 2018 9/24/2018 8.24 8.1 7.42 5.0 9 25 2018 9/25/2018 8.28 8.17 7.57 5.0 Page 5 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00300 - Oxygen, Dissolved (DO) (mo/t) Month Day Year Date Upstream Dnstream Effluent Standard 9 26 2018 9/26/2018 8.02 7.85 7.49 5.0 10 1 2018 10/1/2018 8.25 8.22 8.19 5.0 10 8 2018 10/8/2018 8.2 8.18 7.6 5.0 10 16 2018 10/16/2018 8.54 8.41 8.05 5.0 10 22 2018 10/22/2018 10.22 10.22 8.77 5.0 10 31 2018 10/31/2018 10.39 10.07 8.52 5.0 11 5 2018 11/5/2018 9.65 9.5 8.8 5.0 11 13 2018 11/13/2018 9.01 9.06 9 5.0 11 19 2018 11/19/2018 10.91 10.65 8.88 5.0 11 26 2018 11/26/2018 10.6 10.27 8.85 5.0 12 3 2018 12/3/2018 10.66 10.37 8 5.0 12 12 2018 12/12/2018 11.75 11.44 9.71 5.0 12 17 2018 12/17/2018 11.09 10.69 9.45 5.0 12 27 2018 12/27/2018 10.97 10.52 9.37 5.0 12 31 2018 12/31/2018 9.95 9.55 8.82 5.0 1 7 2019 1/7/2019 10.78 10.49 9.61 5.0 1 14 2019 1/14/2019 10.06 9.45 9.27 5.0 1 22 2019 1/22/2019 12.65 12.29 11.14 5.0 1 30 2019 1/30/2019 10.94 10.52 10.12 5.0 2 4 2019 2/4/2019 13.64 12.98 11.44 5.0 2 11 2019 2/11/2019 15.37 15.23 12.93 5.0 2 18 2019 2/18/2019 11.62 11.13 9.36 5.0 2 26 2019 2/26/2019 11.28 11.03 9.88 5.0 3 4 2019 3/4/2019 10.71 9.84 9.18 5.0 3 11 2019 3/11/2019 10.8 10.56 9.08 5.0 3 18 2019 3/18/2019 13.25 13.18 10.85 5.0 3 25 2019 3/25/2019 10.38 10.22 9.17 5.0 4 1 2019 4/1/2019 10.69 10.48 9.03 5.0 4 8 2019 4/8/2019 9.58 9.51 8.63 5.0 4 15 2019 4/15/2019 9.32 16 8.52 5.0 4 23 2019 4/23/2019 9.52 9.37 8.07 5.0 4 29 2019 4/29/2019 9.15 9.17 8.1 5.0 5 6 2019 5/6/2019 8.67 8.67 7.69 5.0 5 13 2019 5/13/2019 8.61 8.61 7.94 5.0 5 20 2019 5/20/2019 8.35 8.3 7.39 5.0 5 28 2019 5/28/2019 8.04 8.11 7.18 5.0 6 3 2019 6/3/2019 9 8.98 7.15 5.0 6 4 2019 6/4/2019 8.61 8.63 7.25 5.0 6 5 2019 6/5/2019 9.67 9.73 8.18 5.0 6 10 2019 6/10/2019 8.47 8.22 8.31 5.0 6 11 2019 6/11/2019 8.59 8.47 7.9 5.0 6 12 2019 6/12/2019 8.59 8.54 7.61 5.0 6 17 2019 6/17/2019 8.14 8.16 7.36 5.0 6 18 2019 6/18/2019 8.08' 8.01 7.29 5.0 6 19 2019 6/19/2019 8.51 8.51 7.52 5.0 Page 6 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00300 - Oxygen, Dissolved (DO) lmg/L1 Month Day Year Date 6 24 2019 6/24/2019 6 25 2019 6/25/2019 6 26 2019 6/26/2019 7 1 2019 7/1/2019 7 2 2019 7/2/2019 7 3 2019 7/3/2019 7 8 2019 7/8/2019 7 9 2019 7/9/2019 7 10 2019 7/10/2019 7 15 2019 7/15/2019 7 16 2019 7/16/2019 7 17 2019 7/17/2019 7 22 2019 7/22/2019 7 23 2019 7/23/2019 7 24 2019 7/24/2019 7 29 2019 7/29/2019 7 30 2019 7/30/2019 7 31 2019 7/31/2019 Upstream Dnstream Effluent Standard 8.44 8.43 7.57 5.0 8.22 8.2 7.47 5.0 8.15 8.18 7.05 5.0 7.98 8.03 7.16 5.0 7.92 7.93 7.08 5.0 7.97 8.01 7.1 5.0 7.72 7.77 7 5.0 7.75 7.73 6.91 5.0 7.8 7.86 7.01 5.0 7.84 7.84 7.05 5.0 7.88 7.9 7 5.0 7.75 7.81 6.72 5.0 7.74 7.79 6.81 5.0 7.74 7.81 6.86 5.0 8.43 8.42 7.04 5.0 8.07 8.06 7.04 5.0 8.18 8.13 7.02 5.0 8.4 8.36 7.27 5.0 n 288 288 287 Avg 8.88 8.86 7.86 SD 1.32 1.38 1.13 Min 6.89 7.00 6.15 Max 15.37 16.00 12.93 Data in bold are corrected values that originally lacked decimals. 18 16 14 12 J 10 nn 8 E 6 4 2 0 Dissolved Oxygen Upstream Effluent Dnstream Standard O,A 0 O,� 0 Page 7 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00300 - Oxygen, Dissolved {DO] (mg1L) Month Day Year Date t-Test: Paired Two Sample for Means Upstream Dnstream Effluent Standard Upstream Dnstream Mean 8.88184028 8.861458 Variance 1.7524311 1.900134 Observations 288 288 Pearson Correlation 0.92969699 Hypothesized Mean Difference 0 df 287 t Stat 0.67892165 P(T<=t) one -tail 0.24886731 t Critical one -tail 1.65018021 P(T<=t) two -tail 0.49773462 t Critical two -tail 1.96826411 Page 8 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 -Temperature, Water Deg. Centigrade Month Day Year Date 6 1 2016 6/1/2016 6 2 2016 6/2/2016 6 6 2016 6/6/2016 6 7 2016 6/7/2016 6 8 2016 6/8/2016 6 13 2016 6/13/2016 6 14 2016 6/14/2016 6 15 2016 6/15/2016 6 20 2016 6/20/2016 6 21 2016 6/21/2016 6 22 2016 6/22/2016 6 27 2016 6/27/2016 6 28 2016 6/28/2016 6 29 2016 6/29/2016 7 5 2016 7/5/2016 7 6 2016 7/6/2016 7 7 2016 7/7/2016 7 11 2016 7/11/2016 7 12 2016 7/12/2016 7 13 2016 7/13/2016 7 18 2016 7/18/2016 7 19 2016 7/19/2016 7 20 2016 7/20/2016 7 25 2016 7/25/2016 7 26 2016 7/26/2016 7 27 2016 7/27/2016 8 1 2016 8/1/2016 8 2 2016 8/2/2016 8 3 2016 8/3/2016 8 8 2016 8/8/2016 8 9 2016 8/9/2016 8 10 2016 8/10/2016 8 15 2016 8/15/2016 8 16 2016 8/16/2016 8 17 2016 8/17/2016 8 22 2016 8/22/2016 8 23 2016 8/23/2016 8 24 2016 8/24/2016 8 29 2016 8/29/2016 8 30 2016 8/30/2016 8 31 2016 8/31/2016 9 6 2016 9/6/2016 9 7 2016 9/7/2016 9 8 2016 9/8/2016 9 12 2016 9/12/2016 Upstream Dnstream D-U dill Effluent Standard 20.2 20 -0.2 23.7 29 20 20.4 0.4 24.1 29 19.9 21.1 1.2 25.4 29 20.2 20.8 0.6 25 29 18.2 18.5 0.3 24.3 29 21.2 21 -0.2 26.2 29 21.1 20.8 -0.3 26 29 22 21.8 -0.2 25.8 29 18.8 18.8 0 26 29 19.8 19.3 -0.5 25.7 29 21.6 21.7 0.1 26.2 29 21.2 22.2 1 27.2 29 21.1 21.7 0.6 26.7 29 20.1 21 0.9 26.4 29 23.6 23.3 -0.3 27.3 29 23.6 22.2 -1.4 27.3 29 23.1 21.8 -1.3 27.1 29 21.5 21.3 -0.2 27.2 29 21 21 0 26.5 29 21 22.1 1.1 26.7 29 22.9 21 -1.9 27.4 29 22.5 21.6 -0.9 27.1 29 22.2 21.4 -0.8 27 29 22.2 23.8 1.6 27.9 29 23 23.8 0.8 28.2 29 23 23.9 0.9 28.1 29 23.5 22.3 -1.2 28.3 29 23.4 22.3 -1.1 28 29 23.1 21.4 -1.7 27.8 29 22 23.7 1.7 27.3 29 22.4 23.5 1.1 27.3 29 23.1 22.9 -0.2 27.4 29 23.5 23.5 0 28.1 29 23.1 22.4 -0.7 27.5 29 23.2 22.7 -0.5 27.8 29 21 22.1 1.1 27.4 29 19.9 21.2 1.3 27 29 20 21.1 1.1 26.6 29 21.5 20 -1.5 26.7 29 21.2 20.1 -1.1 26 29 21.7 20.1 -1.6 26.4 29 18.6 18.2 -0.4 24.2 29 18.5 19.5 1 24.2 29 18.1 20.1 2 24 29 21.1 19.7 -1.4 25.6 29 Page 1 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 - Temperature, Water Dea. Centrarade Month Day Year Date 9 13 2016 9/13/2016 9 14 2016 9/14/2016 9 19 2016 9/19/2016 9 20 2016 9/20/2016 9 21 2016 9/21/2016 9 26 2016 9/26/2016 9 27 2016 9/27/2016 9 28 2016 9/28/2016 10 4 2016 10/4/2016 10 11 2016 10/11/2016 10 18 2016 10/18/2016 10 25 2016 10/25/2016 11 1 2016 11/1/2016 11 8 2016 11/8/2016 11 15 2016 11/15/2016 11 22 2016 11/22/2016 11 29 2016 11/29/2016 12 6 2016 12/6/2016 12 13 2016 12/13/2016 12 20 2016 12/20/2016 12 29 2016 12/29/2016 1 3 2017 1/3/2017 1 10 2017 1/10/2017 1 17 2017 1/17/2017 1 24 2017 1/24/2017 1 31 2017 1/31/2017 2 7 2017 2/7/2017 2 14 2017 2/14/2017 2 21 2017 2/21/2017 3 8 2017 3/8/2017 3 14 2017 3/14/2017 3 21 2017 3/21/2017 3 28 2017 3/28/2017 4 4 2017 4/4/2017 4 12 2017 4/12/2017 4 18 2017 4/18/2017 4 25 2017 4/25/2017 5 2 2017 5/2/2017 5 9 2017 5/9/2017 5 16 2017 5/16/2017 5 23 2017 5/23/2017 5 30 2017 5/30/2017 6 1 2017 6/1/2017 6 2 2017 6/2/2017 6 5 2017 6/5/2017 Upstream Dnstream D-U diff Effluent Standard 20.7 19.5 -1.2 25.1 29 20.1 19.6 -0.5 25 29 19.5 21.5 2 25.5 29 19.6 20.9 1.3 25.1 29 19.5 19.7 0.2 24.8 29 21.1 19.6 -1.5 25.1 29 21.1 19.5 -1.6 24.5 29 20.4 19.4 -1 24.4 29 17.8 17.8 0 22.1 29 12.4 11 -1.4 18.5 29 15 15.1 0.1 19.5 29 10.8 10 -0.8 16.3 29 16 16.1 0.1 18.3 29 9.1 8 -1.1 15 29 7.1 7 -0.1 12.2 29 4.1 4.6 0.5 10 29 10.5 10.7 0.2 11.7 29 10.3 9 -1.3 11.7 29 7 9.1 2.1 9.1 29 7.1 6.8 -0.3 9 29 8 8.5 0.5 11.9 29 9.9 9 -0.9 10.4 29 2 1.5 -0.5 6.7 29 11.5 10.5 -1 12.5 29 10 10.1 0.1 13.2 29 4.1 4 -0.1 9.9 29 8.6 8.8 0.2 10.5 29 7.1 6.6 -0.5 11 29 9.4 9.6 0.2 12.6 29 12.4 13 0.6 15 29 7.4 7.1 -0.3 10.7 29 10.4 9.9 -0.5 12.2 29 15.7 15.7 0 16.7 29 15.1 14.6 -0.5 17.3 29 13 13.8 0.8 16.7 29 17.8 17 -0.8 19.4 29 15 15 0 17.1 29 17.1 16.9 -0.2 20.4 29 15 15.1 0.1 17.7 29 17.8 17 -0.8 20 29 19.1 19 -0.1 22 29 20.1 18.7 -1.4 22.4 29 18.4 18.1 -0.3 22.5 29 19.5 19 -0.5 23 29 19.6 19.1 -0.5 23.6 29 Page 2 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 - Temperature. Water Deq. Centigrade Month Day Year Date 6 6 2017 6/6/2017 6 7 2017 6/7/2017 6 12 2017 6/12/2017 6 13 2017 6/13/2017 6 14 2017 6/14/2017 6 19 2017 6/19/2017 6 20 2017 6/20/2017 6 21 2017 6/21/2017 6 26 2017 6/26/2017 6 27 2017 6/27/2017 6 28 2017 6/28/2017 7 3 2017 7/3/2017 7 5 2017 7/5/2017 7 6 2017 7/6/2017 7 10 2017 7/10/2017 7 11 2017 7/11/2017 7 12 2017 7/12/2017 7 17 2017 7/17/2017 7 18 2017 7/18/2017 7 19 2017 7/19/2017 7 24 2017 7/24/2017 7 25 2017 7/25/2017 7 26 2017 7/26/2017 7 31 2017 7/31/2017 8 1 2017 8/1/2017 8 2 2017 8/2/2017 8 7 2017 8/7/2017 8 8 2017 8/8/2017 8 9 2017 8/9/2017 8 14 2017 8/14/2017 8 15 2017 8/15/2017 8 16 2017 8/16/2017 8 21 2017 8/21/2017 8 22 2017 8/22/2017 8 23 2017 8/23/2017 8 28 2017 8/28/2017 8 29 2017 8/29/2017 8 30 2017 8/30/2017 9 5 2017 9/5/2017 9 6 2017 9/6/2017 9 7 2017 9/7/2017 9 11 2017 9/11/2017 9 12 2017 9/12/2017 9 13 2017 9/13/2017 9 18 2017 9/18/2017 Upstream Dnstream D-U dill Effluent Standard 20.7 20.7 0 23.6 29 19.6 18.4 -1.2 23.3 29 20 19.1 -0.9 23.6 29 20.5 20.5 0 23.7 29 20.4 19.5 -0.9 24 29 22.5 20.2 -2.3 25.9 29 20.8 19.9 -0.9 25.4 29 20 21 1 25 29 19 18.2 -0.8 24 29 19.5 17.7 -1.8 23.9 29 17.1 15.8 -1.3 23 29 20.7 20.8 0.1 20.8 29 21 20.9 -0.1 25.6 29 20.4 19.9 -0.5 25.5 29 20.9 21 0.1 26 29 21.3 22.4 1.1 26 29 21.4 22.1 0.7 24.6 29 21.6 21 -0.6 25.7 29 21.6 20.8 -0.8 24.6 29 21.2 21.5 0.3 25 29 22.1 22.5 0.4 26.1 29 21 21.7 0.7 26 29 21.7 22.2 0.5 25.7 29 19.7 18.8 -0.9 24.3 29 19.4 19.7 0.3 23.2 29 20.4 19.7 -0.7 23.4 29 21.6 21.7 0.1 23.5 29 21 21.5 0.5 23 29 19.8 19.7 -0.1 23.8 29 23 22.5 -0.5 23.7 29 23.6 22.9 -0.7 23.9 29 22.7 23.4 0.7 25.3 29 22.4 21.5 -0.9 25.6 29 22.4 21.9 -0.5 25.2 29 22.2 21.9 -0.3 25.5 29 19.2 19.8 0.6 23.3 29 19.7 18.9 -0.8 23.3 29 19.4 19.5 0.1 19.9 29 18.5 18.9 0.4 21.3 29 19.4 18.5 -0.9 21.4 29 17.6 16.7 -0.9 20.3 29 16.7 16.4 -0.3 19.3 29 16.6 16.5 -0.1 18.6 29 16.4 16.5 0.1 18.9 29 19 18.8 -0.2 22.1 29 Page 3 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 - Temperature, Water Dec. Centrarade Month Day Year Date 9 19 2017 9/19/2017 9 20 2017 9/20/2017 9 25 2017 9/25/2017 9 26 2017 9/26/2017 9 27 2017 9/27/2017 10 3 2017 10/3/2017 10 10 2017 10/10/2017 10 17 2017 10/17/2017 10 24 2017 10/24/2017 10 31 2017 10/31/2017 11 7 2017 11/7/2017 11 14 2017 11/14/2017 11 21 2017 11/21/2017 11 28 2017 11/28/2017 12 5 2017 12/5/2017 12 12 2017 12/12/2017 12 19 2017 12/19/2017 12 28 2017 12/28/2017 1 2 2018 1/2/2018 1 8 2018 1/8/2018 1 15 2018 1/15/2018 1 22 2018 1/22/2018 1 29 2018 1/29/2018 2 5 2018 2/5/2018 2 12 2018 2/12/2018 2 19 2018 2/19/2018 2 26 2018 2/26/2018 3 5 2018 3/5/2018 3 13 2018 3/13/2018 3 20 2018 3/20/2018 3 27 2018 3/27/2018 4 3 2018 4/3/2018 4 9 2018 4/9/2018 4 16 2018 4/16/2018 4 23 2018 4/23/2018 4 30 2018 4/30/2018 5 7 2018 5/7/2018 5 14 2018 5/14/2018 5 21 2018 5/21/2018 5 28 2018 5/28/2018 6 4 2018 6/4/2018 6 5 2018 6/5/2018 6 6 2018 6/6/2018 6 11 2018 6/11/2018 6 12 2018 6/12/2018 Upstream Dnstream D-U dill Effluent Standard 18.7 19 0.3 22.3 29 19.7 18.9 -0.8 22.5 29 20 18.9 -1.1 23.1 29 19.3 18.9 -0.4 22.8 29 18.8 19.1 0.3 23.3 29 15.2 14.6 -0.6 19.3 29 21 21.6 0.6 23.5 29 14.3 14.3 0 19.5 29 15.6 15.7 0.1 18.3 29 10.4 9.5 -0.9 13.2 29 16.2 16.3 0.1 17.9 29 11 10.6 -0.4 12.3 29 7.9 8 0.1 10.5 29 5.9 5.9 0 8.5 29 10.5 10 -0.5 11.5 29 5.7 5.5 -0.2 7.2 29 7.9 8 0.1 6.9 29 4 3.3 -0.7 6.5 29 0.7 1 0.3 2.9 29 0.3 0.9 0.6 1.7 29 2.4 2.6 0.2 29 6.6 6 -0.6 6.8 29 9.3 9.4 0.1 11 29 6.6 5.9 -0.7 8 29 11.3 11.8 0.5 13.4 29 11.8 11.8 0 13.2 29 14.7 14 -0.7 16.5 29 8.3 8.3 0 10.2 29 7.2 7 -0.2 8.9 29 14 13.5 -0.5 13.1 29 11.3 10.8 -0.5 11 29 13.3 13.4 0.1 14.6 29 11.2 10.7 -0.5 12.6 29 14 14 0 15 29 13.9 13.1 -0.8 15.6 29 12.4 13.3 0.9 15 29 16.8 15.9 -0.9 17.4 29 19 20 1 21.8 29 16 18.6 2.6 22.3 29 20.6 20.4 -0.2 29 20.6 20 -0.6 23.2 29 19 19.6 0.6 22.6 29 19.3 19 -0.3 22.9 29 21.7 21.5 -0.2 22.5 29 20.7 20 -0.7 22.9 29 Page 4 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 -Temperature, Water Deter . Centigrade Month Day Year Date 6 13 2018 6/13/2018 6 18 2018 6/18/2018 6 19 2018 6/19/2018 6 20 2018 6/20/2018 6 26 2018 6/26/2018 6 27 2018 6/27/2018 6 28 2018 6/28/2018 7 2 2018 7/2/2018 7 3 2018 7/3/2018 7 5 2018 7/5/2018 7 9 2018 7/9/2018 7 10 2018 7/10/2018 7 11 2018 7/11/2018 7 16 2018 7/16/2018 7 17 2018 7/17/2018 7 18 2018 7/18/2018 7 23 2018 7/23/2018 7 24 2018 7/24/2018 7 25 2018 7/25/2018 7 30 2018 7/30/2018 7 31 2018 7/31/2018 8 1 2018 8/1/2018 8 6 2018 8/6/2018 8 7 2018 8/7/2018 8 8 2018 8/8/2018 8 13 2018 8/13/2018 8 14 2018 8/14/2018 8 16 2018 8/16/2018 8 20 2018 8/20/2018 8 21 2018 8/21/2018 8 22 2018 8/22/2018 8 27 2018 8/27/2018 8 28 2018 8/28/2018 8 29 2018 8/29/2018 9 4 2018 9/4/2018 9 5 2018 9/5/2018 9 6 2018 9/6/2018 9 10 2018 9/10/2018 9 11 2018 9/11/2018 9 12 2018 9/12/2018 9 17 2018 9/17/2018 9 18 2018 9/18/2018 9 19 2018 9/19/2018 9 24 2018 9/24/2018 9 25 2018 9/25/2018 Upstream Dnstream D-U diff Effluent Standard 21 20 -1 22.5 29 22.5 21 -1.5 24.9 29 22.4 21 -1.4 25.5 29 23.5 23 -0.5 25.8 29 22 22 0 24.9 29 21 21.7 0.7 24.9 29 21.7 21 -0.7 24.7 29 22.7 22 -0.7 25.7 29 22.7 22.2 -0.5 25.5 29 23.5 23 -0.5 26.1 29 19.5 18.5 -1 23.4 29 21 19.6 -1.4 23.4 29 21.8 21.6 -0.2 24.1 29 22.8 22.7 -0.1 25 29 21.9 22.3 0.4 25.3 29 22.4 22.6 0.2 25.3 29 21 20 -1 23.8 29 21 19.8 -1.2 23.4 29 21.4 21.6 0.2 23.9 29 22.1 21.6 -0.5 24.9 29 22.6 21.6 -1 25 29 21.7 20.4 -1.3 24.9 29 23 22.8 -0.2 25.6 29 22 22 0 25.3 29 22.9 21.8 -1.1 25.6 29 21.7 21.6 -0.1 25.5 29 19.6 21.4 1.8 25 29 21.7 21.9 0.2 25.5 29 22.8 22.9 0.1 25.2 29 22.7 22.1 -0.6 25.3 29 21.8 21 -0.8 25.3 29 21.1 21 -0.1 23.1 29 21.6 21.3 -0.3 24.2 29 21.2 21.6 0.4 24.9 29 22.2 21 -1.2 25.7 29 22.5 22 -0.5 25.8 29 22.6 21 -1.6 25.9 29 22.1 22.2 0.1 25.1 29 22.2 21.7 -0.5 24.6 29 22.4 21.7 -0.7 24.6 29 22.2 20 -2.2 24 29 22.6 21.1 -1.5 24.7 29 20.6 20.6 0 24.4 29 20.3 19.4 -0.9 24.5 29 20.2 19 -1.2 22.9 29 Page 5 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 - Temperature, Water Deq. Centfarade Month Day Year Date 9 26 2018 9/26/2018 10 1 2018 10/1/2018 10 8 2018 10/8/2018 10 16 2018 10/16/2018 10 22 2018 10/22/2018 10 31 2018 10/31/2018 11 5 2018 11/5/2018 11 13 2018 11/13/2018 11 19 2018 11/19/2018 11 26 2018 11/26/2018 12 3 2018 12/3/2018 12 12 2018 12/12/2018 12 17 2018 12/17/2018 12 27 2018 12/27/2018 12 31 2018 12/31/2018 1 7 2019 1/7/2019 1 14 2019 1/14/2019 1 22 2019 1/22/2019 1 28 2019 1/28/2019 2 4 2019 2/4/2019 2 11 2019 2/11/2019 2 18 2019 2/18/2019 2 26 2019 2/26/2019 3 4 2019 3/4/2019 3 11 2019 3/11/2019 3 18 2019 3/18/2019 3 25 2019 3/25/2019 4 1 2019 4/1/2019 4 8 2019 4/8/2019 4 15 2019 4/15/2019 4 23 2019 4/23/2019 4 29 2019 4/29/2019 5 6 2019 5/6/2019 5 13 2019 5/13/2019 5 20 2019 5/20/2019 5 28 2019 5/28/2019 6 3 2019 6/3/2019 6 4 2019 6/4/2019 6 5 2019 6/5/2019 6 10 2019 6/10/2019 6 11 2019 6/11/2019 6 12 2019 6/12/2019 6 17 2019 6/17/2019 6 18 2019 6/18/2019 6 19 2019 6/19/2019 Upstream Dnstream D-U difF Effluent Standard 20.9 20 -0.9 23.4 29 20.8 20.3 -0.5 23.8 29 21 20.5 -0.5 24.2 29 18.8 19 0.2 20.8 29 10.4 10.4 0 16.2 29 11.5 11 -0.5 16.1 29 13.2 12.6 -0.6 16.2 29 10.9 10.7 -0.2 29 9.2 9.9 0.7 13.2 29 10.7 10.7 0 13 29 10.2 10.2 0 13.8 29 4.2 5.4 1.2 11 29 7.7 7.8 0.1 13.2 29 7.4 7 -0.4 11.8 29 10.6 10.7 0.1 13.7 29 9.5 9.5 0 13.2 29 7.3 8 0.7 11.3 29 4.2 4.4 0.2 10.9 29 6 5.7 -0.3 11.1 29 7.2 7.5 0.3 12 29 8.3 8 -0.3 13.6 29 8.3 8 -0.3 13.4 29 8.8 9 0.2 12.7 29 10.5 10.7 0.2 13.9 29 10.9 11 0.1 14.4 29 9.6 9.2 -0.4 14.9 29 11.7 12 0.3 14.9 29 10.7 9.4 -1.3 15.2 29 16 16 0 18.2 29 15.8 16 0.2 17.3 29 15.2 15.2 0 17.9 29 16.6 16.7 0.1 19.5 29 16.8 16.8 0 20.9 29 19.1 19.1 0 20.6 29 19.6 19.5 -0.1 22.6 29 21.3 20.4 -0.9 23.9 29 19.3 19.4 0.1 23.6 29 19.2 18.4 -0.8 23.2 29 20.2 19.8 -0.4 23.9 29 20.3 20.9 0.6 22.2 29 20.2 20 -0.2 22.2 29 19 19 0 22.2 29 21.5 21.5 0 24.1 29 21.9 21 -0.9 24.6 29 21.6 21.4 -0.2 24.6 29 Page 6 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00010 - Temraerature, Water Dec. Centigrade Month Day Year Date 6 24 2019 6/24/2019 6 25 2019 6/25/2019 6 26 2019 6/26/2019 7 1 2019 7/1/2019 7 2 2019 7/2/2019 7 3 2019 7/3/2019 7 8 2019 7/8/2019 7 9 2019 7/9/2019 7 10 2019 7/10/2019 7 15 2019 7/15/2019 7 16 2019 7/16/2019 7 17 2019 7/17/2019 7 22 2019 7/22/2019 7 23 2019 7/23/2019 7 24 2019 7/24/2019 7 29 2019 7/29/2019 7 30 2019 7/30/2019 7 31 2019 7/31/2019 Upstream Dnstream D-U difF 21.4 20.6 -0.8 21.9 21.2 -0.7 21.2 20.4 -0.8 22.2 21.5 -0.7 22.4 22.1 -0.3 22.5 23 0.5 23.6 24 0.4 23.2 23 -0.2 23.2 23.2 0 23.2 24 0.8 23.5 22.6 -0.9 23.5 23.3 -0.2 23.6 23.4 -0.2 22.6 22 -0.6 20.4 20 -0.4 21 20.6 -0.4 21.2 20.9 -0.3 21.4 21.3 -0.1 Effluent Standard 24.5 29 24.7 29 24.8 29 26.1 29 26.2 29 26.3 29 26.3 29 26.9 29 26.7 29 26.4 29 26.6 29 26.9 29 27.2 29 26.9 29 24.9 29 25.5 29 26.2 29 26.3 29 n 288 288 288 285 Avg 17.67 17.45 -0.21 21.20 SD 5.59 5.52 0.75 5.88 Min 0.30 0.90 -2.30 1.70 Max 23.60 24.00 2.60 28.30 Temperature ■ Upstream w Effluent Dnstream Standard 35 30 25 20 u o 15 10 5 0 O,(0 QP Otis �,\'V "S' Page 7 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00010 - Temperature, Water Deg. Centigrade Month Day Year Date Upstream Dnstream D-U dill Effluent Standard t-Test: Paired Two Sample for Means Upstream Dnstream Mean 17.6673611 17.454167 Variance 31.2940529 30.523328 Observations 288 288 Pearson Correlation 0.99094763 Hypothesized Mean Difference 0 df 287 t Stat 4.81610527 P(T<=t) one -tail 1.1865E-06 t Critical one -tail 1.65018021 P(T<=t) two -tail 2.3729E-06 t Critical two -tail 1.96826411 Conclusion: upstream temperatures higher. Page 8 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity lumhos cml Month Day Year Date Upstream Dnstream 6 1 2016 6/1/2016 56 63 6 2 2016 6/2/2016 59 68 6 6 2016 6/6/2016 62 72 6 7 2016 6/7/2016 63 73 6 8 2016 6/8/2016 60 75 6 13 2016 6/13/2016 62 72 6 14 2016 6/14/2016 61 76 6 15 2016 6/15/2016 60 68 6 20 2016 6/20/2016 65 74 6 21 2016 6/21/2016 64 79 6 22 2016 6/22/2016 63 75 6 27 2016 6/27/2016 65 83 6 28 2016 6/28/2016 63 77 6 29 2016 6/29/2016 64 79 7 5 2016 7/5/2016 56 67 7 6 2016 7/6/2016 58 68 7 7 2016 7/7/2016 61 70 7 11 2016 7/11/2016 62 74 7 12 2016 7/12/2016 59 70 7 13 2016 7/13/2016 60 68 7 18 2016 7/18/2016 63 74 7 19 2016 7/19/2016 64 77 7 20 2016 7/20/2016 66 78 7 25 2016 7/25/2016 65 79 7 26 2016 7/26/2016 66 78 7 27 2016 7/27/2016 55 63 8 1 2016 8/1/2016 61 78 8 2 2016 8/2/2016 63 80 8 3 2016 8/3/2016 64 81 8 8 2016 8/8/2016 51 66 8 9 2016 8/9/2016 62 70 8 10 2016 8/10/2016 63 69 8 15 2016 8/15/2016 63 72 8 16 2016 8/16/2016 64 76 8 17 2016 8/17/2016 66 77 8 22 2016 8/22/2016 63 76 8 23 2016 8/23/2016 64 80 8 24 2016 8/24/2016 66 81 8 29 2016 8/29/2016 62 78 8 30 2016 8/30/2016 65 81 8 31 2016 8/31/2016 66 83 9 6 2016 9/6/2016 64 81 9 7 2016 9/7/2016 66 84 9 8 2016 9/8/2016 65 87 9 12 2016 9/12/2016 63 86 Page 1 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity[umhos cm) Month Day Year Date Upstream Dnstream 9 13 2016 9/13/2016 65 88 9 14 2016 9/14/2016 68 90 9 19 2016 9/19/2016 67 85 9 20 2016 9/20/2016 64 88 9 21 2016 9/21/2016 66 90 9 26 2016 9/26/2016 65 93 9 27 2016 9/27/2016 64 83 9 28 2016 9/28/2016 62 76 10 4 2016 10/4/2016 67 88 10 11 2016 10/11/2016 67 91 10 18 2016 10/18/2016 65 92 10 25 2016 10/25/2016 66 98 11 1 2016 11/1/2016 67 94 11 8 2016 11/8/2016 65 90 11 15 2016 11/15/2016 65 84 11 22 2016 11/22/2016 73 86 11 29 2016 11/29/2016 63 97 12 6 2016 12/6/2016 61 90 12 13 2016 12/13/2016 66 85 12 20 2016 12/20/2016 62 84 12 29 2016 12/29/2016 61 90 1 3 2017 1/3/2017 57 82 1 10 2017 1/10/2017 63 85 1 17 2017 1/17/2017 61 82 1 24 2017 1/24/2017 60 69 1 31 2017 1/31/2017 63 81 2 7 2017 2/7/2017 62 81 2 14 2017 2/14/2017 64 82 2 21 2017 2/21/2017 63 98 3 8 2017 3/8/2017 63 76 3 14 2017 3/14/2017 59 81 3 21 2017 3/21/2017 61 79 3 28 2017 3/28/2017 55 83 4 4 2017 4/4/2017 45 45 4 12 2017 4/12/2017 62 71 4 18 2017 4/18/2017 59 62 4 25 2017 4/25/2017 48 52 5 2 2017 5/2/2017 56 63 5 9 2017 5/9/2017 56 66 5 16 2017 5/16/2017 57 67 5 23 2017 5/23/2017 55 69 5 30 2017 5/30/2017 59 76 6 1 2017 6/1/2017 63 77 6 2 2017 6/2/2017 64 76 6 5 2017 6/5/2017 65 82 Page 2 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity (umhoJcmJ Month Day Year Date Upstream Dnstream 6 6 2017 6/6/2017 60 75 6 7 2017 6/7/2017 63 78 6 12 2017 6/12/2017 63 77 6 13 2017 6/13/2017 65 75 6 14 2017 6/14/2017 62 76 6 19 2017 6/19/2017 65 77 6 20 2017 6/20/2017 66 80 6 21 2017 6/21/2017 63 82 6 26 2017 6/26/2017 65 82 6 27 2017 6/27/2017 66 85 6 28 2017 6/28/2017 69 89 7 3 2017 7/3/2017 66 84 7 5 2017 7/5/2017 67 88 7 6 2017 7/6/2017 70 87 7 10 2017 7/10/2017 69 86 7 11 2017 7/11/2017 67 95 7 12 2017 7/12/2017 68 95 7 17 2017 7/17/2017 67 77 7 18 2017 7/18/2017 69 80 7 19 2017 7/19/2017 66 86 7 24 2017 7/24/2017 68 84 7 25 2017 7/25/2017 67 81 7 26 2017 7/26/2017 69 78 7 31 2017 7/31/2017 70 104 8 1 2017 8/1/2017 69 101 8 2 2017 8/2/2017 71 102 8 7 2017 8/7/2017 64 96 8 8 2017 8/8/2017 65 90 8 9 2017 8/9/2017 68 89 8 14 2017 8/14/2017 37 41 8 15 2017 8/15/2017 52 57 8 16 2017 8/16/2017 56 66 8 21 2017 8/21/2017 66 87 8 22 2017 8/22/2017 68 88 8 23 2017 8/23/2017 56 95 8 28 2017 8/28/2017 75 94 8 29 2017 8/29/2017 68 96 8 30 2017 8/30/2017 63 80 9 5 2017 9/5/2017 65 79 9 6 2017 9/6/2017 53 63 9 7 2017 9/7/2017 58 67 9 11 2017 9/11/2017 66 85 9 12 2017 9/12/2017 61 98 9 13 2017 9/13/2017 64 82 9 18 2017 9/18/2017 65 82 Page 3 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity umhos cm Month Day Year Date Upstream Dnstream 9 19 2017 9/19/2017 67 84 9 20 2017 9/20/2017 62 80 9 25 2017 9/25/2017 69 98 9 26 2017 9/26/2017 70 96 9 27 2017 9/27/2017 68 99 10 3 2017 10/3/2017 68 97 10 10 2017 10/10/2017 61 70 10 17 2017 10/17/2017 68 89 10 24 2017 10/24/2017 50 55 10 31 2017 10/31/2017 62 70 11 7 2017 11/7/2017 65 81 11 14 2017 11/14/2017 84 90 11 21 2017 11/21/2017 61 77 11 28 2017 11/28/2017 64 81 12 5 2017 12/5/2017 66 76 12 12 2017 12/12/2017 81 90 12 19 2017 12/19/2017 63 78 12 28 2017 12/28/2017 60 71 1 2 2018 1/2/2018 66 76 1 8 2018 1/8/2018 62 81 1 16 2018 1/16/2018 60 67 1 22 2018 1/22/2018 63 73 1 29 2018 1/29/2018 60 79 2 5 2018 2/5/2018 53 68 2 12 2018 2/12/2018 43 46 2 19 2018 2/19/2018 53 61 2 26 2018 2/26/2018 61 72 3 5 2018 3/5/2018 60 73 3 13 2018 3/13/2018 80 86 3 20 2018 3/20/2018 56 66 3 27 2018 3/27/2018 61 72 4 3 2018 4/3/2018 62 73 4 9 2018 4/9/2018 61 71 4 16 2018 4/16/2018 43 49 4 23 2018 4/23/2018 46 57 4 30 2018 4/30/2018 57 66 5 7 2018 5/7/2018 61 73 5 14 2018 5/14/2018 61 76 5 21 2018 5/21/2018 42 45 5 28 2018 5/28/2018 57 65 6 4 2018 6/4/2018 56 62 6 5 2018 6/5/2018 58 64 6 6 2018 6/6/2018 59 66 6 11 2018 6/11/2018 63 71 6 12 2018 6/12/2018 59 67 Page 4 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity f umhoslcml Month Day Year Date 6 13 2018 6/13/2018 6 18 2018 6/18/2018 6 19 2018 6/19/2018 6 20 2018 6/20/2018 6 26 2018 6/26/2018 6 27 2018 6/27/2018 6 28 2018 6/28/2018 7 2 2018 7/2/2018 7 3 2018 7/3/2018 7 5 2018 7/5/2018 7 9 2018 7/9/2018 7 10 2018 7/10/2018 7 11 2018 7/11/2018 7 16 2018 7/16/2018 7 17 2018 7/17/2018 7 18 2018 7/18/2018 7 23 2018 7/23/2018 7 24 2018 7/24/2018 7 25 2018 7/25/2018 7 30 2018 7/30/2018 7 31 2018 7/31/2018 8 1 2018 8/1/2018 8 6 2018 8/6/2018 8 7 2018 8/7/2018 8 8 2018 8/8/2018 8 13 2018 8/13/2018 8 14 2018 8/14/2018 8 16 2018 8/16/2018 8 20 2018 8/20/2018 8 21 2018 8/21/2018 8 22 2018 8/22/2018 8 27 2018 8/27/2018 8 28 2018 8/28/2018 8 29 2018 8/29/2018 9 4 2018 9/4/2018 9 5 2018 9/5/2018 9 6 2018 9/6/2018 9 10 2018 9/10/2018 9 11 2018 9/11/2018 9 12 2018 9/12/2018 9 17 2018 9/17/2018 9 18 2018 9/18/2018 9 19 2018 9/19/2018 9 24 2018 9/24/2018 9 25 2018 9/25/2018 Upstream Dnstream 64 72 65 73 63 76 60 75 59 69 51 54 60 67 64 74 65 75 70 78 66 74 67 76 62 80 66 80 65 81 63 75 63 74 57 64 61 71 65 78 67 80 64 74 66 77 65 69 64 73 65 77 68 79 64 81 upstream originally 644 66 75 68 77 70 78 66 82 67 73 65 71 66 80 64 77 68 81 59 75 64 73 67 80 50 56 59 66 63 70 64 78 66 79 Page 5 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity (umhos�cm Month Day Year Date Upstream Dnstream 9 26 2018 9/26/2018 54 62 10 1 2018 10/1/2018 66 72 10 8 2018 10/8/2018 65 75 10 16 2018 10/16/2018 58 63 10 22 2018 10/22/2018 64 74 10 31 2018 10/31/2018 63 70 11 5 2018 11/5/2018 60 72 11 13 2018 11/13/2018 47 50 11 19 2018 11/19/2018 31 58 11 26 2018 11/26/2018 54 62 12 3 2018 12/3/2018 58 70 12 12 2018 12/12/2018 57 65 12 17 2018 12/17/2018 82 84 12 27 2018 12/27/2018 52 60 12 31 2018 12/31/2018 42 48 1 7 2019 1/7/2019 48 52 1 14 2019 1/14/2019 53 62 1 22 2019 1/22/2019 52 67 1 30 2019 1/30/2019 53 66 2 4 2019 2/4/2019 55 71 2 11 2019 2/11/2019 55 67 2 18 2019 2/18/2019 34 40 2 26 2019 2/26/2019 44 52 3 4 2019 3/4/2019 51 59 3 11 2019 3/11/2019 52 60 3 18 2019 3/18/2019 54 63 3 25 2019 3/25/2019 56 62 4 1 2019 4/1/2019 55 63 4 8 2019 4/8/2019 56 66 4 15 2019 4/15/2019 49 54 4 23 2019 4/23/2019 56 64 4 29 2019 4/29/2019 57 63 5 6 2019 5/6/2019 58 64 5 13 2019 5/13/2019 53 58 5 20 2019 5/20/2019 60 63 5 28 2019 5/28/2019 56 64 6 3 2019 6/3/2019 58 66 6 4 2019 6/4/2019 60 67 6 5 2019 6/5/2019 62 69 6 10 2019 6/10/2019 37 39 6 11 2019 6/11/2019 46 50 6 12 2019 6/12/2019 49 54 6 17 2019 6/17/2019 46 53 6 18 2019 6/18/2019 40 41 6 19 2019 6/19/2019 45 51 Page 6 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 00094 - Conductivity fumhoslem Month Day Year Date Upstream Dnstream 6 24 2019 6/24/2019 59 66 6 25 2019 6/25/2019 54 60 6 26 2019 6/26/2019 59 67 7 1 2019 7/1/2019 52 58 7 2 2019 7/2/2019 53 60 7 3 2019 7/3/2019 54 61 7 8 2019 7/8/2019 61 69 7 9 2019 7/9/2019 62 72 7 10 2019 7/10/2019 64 73 7 15 2019 7/15/2019 60 68 7 16 2019 7/16/2019 62 69 7 17 2019 7/17/2019 63 72 7 22 2019 7/22/2019 62 72 7 23 2019 7/23/2019 60 71 7 24 2019 7/24/2019 63 74 7 29 2019 7/29/2019 61 74 7 30 2019 7/30/2019 64 73 7 31 2019 7/31/2019 63 72 n 288 288 Avg 61.09 74.35 SD 7.16 11.90 Min 31.00 39.00 Max 84.00 104.00 Conductivity *Upstream A Dnstream 120 100 80AAR . 1; # AL AL 60 , t 40i E 20 0 01� oti�O otiA otiA C oti�' oti�' oti� oti \T w�ti0\� �\o�ti Page 7 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NC0020664 00094 - Conductivity fumhos/cmt Month Day Year Date Upstream Dnstream t-Test: Paired Two Sample for Means Upstream Dnstream Mean 61.0902778 74.34722 Variance 51.2322396 141.6003 Observations 288 288 Pearson Correlation 0.82733396 Hypothesized Mean Difference 0 df 287 t Stat -31.22918 P(T<=t) one -tail 1.313E-94 t Critical one -tail 1.65018021 P(T<=t) two -tail 2.6261E-94 t Critical two -tail 1.96826411 Conclusion.: Downstream conductivity is significantly higher than upstream. Page 8 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Coliform, Fecal ME MFC Broth, 44.5 C fcfu/100 mL] Month Day Year Date Upstream Dnstream Effkuent 6 1 2016 6/1/2016 150 165 24 6 2 2016 6/2/2016 110 92 2 6 6 2016 6/6/2016 130 88 18 6 7 2016 6/7/2016 135 168 6 6 8 2016 6/8/2016 115 140 76 6 13 2016 6/13/2016 60 76 7 6 14 2016 6/14/2016 100 125 8 6 15 2016 6/15/2016 130 185 41 6 20 2016 6/20/2016 60 88 8 6 21 2016 6/21/2016 135 115 1 6 22 2016 6/22/2016 56 96 14 6 27 2016 6/27/2016 60 108 1 6 28 2016 6/28/2016 155 336 3 6 29 2016 6/29/2016 125 110 18 7 5 2016 7/5/2016 440 580 34 7 6 2016 7/6/2016 520 640 52 7 7 2016 7/7/2016 125 155 7 7 11 2016 7/11/2016 56 108 6 7 12 2016 7/12/2016 118 150 4 7 13 2016 7/13/2016 110 125 24 7 18 2016 7/18/2016 64 92 8 7 19 2016 7/19/2016 110 145 16 7 20 2016 7/20/2016 56 100 43 7 25 2016 7/25/2016 125 145 57 7 26 2016 7/26/2016 115 135 47 7 27 2016 7/27/2016 460 580 90 8 1 2016 8/1/2016 130 115 41 8 2 2016 8/2/2016 110 160 54 8 3 2016 8/3/2016 72 96 120 8 8 2016 8/8/2016 500 640 63 8 9 2016 8/9/2016 130 145 16 8 10 2016 8/10/2016 145 185 61 8 15 2016 8/15/2016 145 170 44 8 16 2016 8/16/2016 110 135 24 8 17 2016 8/17/2016 135 155 134 8 22 2016 8/22/2016 115 155 220 8 23 2016 8/23/2016 68 100 95 8 24 2016 8/24/2016 125 148 57 8 29 2016 8/29/2016 110 135 72 8 30 2016 8/30/2016 60 104 6 8 31 2016 8/31/2016 100 125 84 9 6 2016 9/6/2016 68 125 34 9 7 2016 9/7/2016 130 130 28 9 8 2016 9/8/2016 105 120 10 9 12 2016 9/12/2016 130 150 6 Page 1 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - C'olifcrrm, Fecal_MF MfC Broth, 44.5 C tcfullOO mL Month Day Year Date Upstream Dnstream Effkuent 9 13 2016 9/13/2016 110 135 8 9 14 2016 9/14/2016 56 80 33 9 19 2016 9/19/2016 115 135 8 9 20 2016 9/20/2016 105 135 12 9 21 2016 9/21/2016 120 145 24 9 26 2016 9/26/2016 145 170 7 9 27 2016 9/27/2016 145 185 10 9 28 2016 9/28/2016 125 190 32 10 4 2016 10/4/2016 135 150 4 10 11 2016 10/11/2016 110 140 4 10 18 2016 10/18/2016 80 96 2 10 25 2016 10/25/2016 60 72 1 11 1 2016 11/1/2016 58 84 6 11 8 2016 11/8/2016 76 60 6 11 15 2016 11/15/2016 48 135 4 11 22 2016 11/22/2016 72 110 93 11 29 2016 11/29/2016 145 170 26 12 6 2016 12/6/2016 130 170 300 12 13 2016 12/13/2016 60 100 24 12 20 2016 12/20/2016 48 60 1 12 29 2016 12/29/2016 64 72 1 1 3 2017 1/3/2017 420 480 28 1 10 2017 1/10/2017 32 44 1 1 17 2017 1/17/2017 32 36 2 1 24 2017 1/24/2017 110 145 6 1 31 2017 1/31/2017 115 148 1 2 7 2017 2/7/2017 105 135 1 2 14 2017 2/14/2017 115 155 250 2 21 2017 2/21/2017 145 235 230 3 8 2017 3/8/2017 105 145 3 3 14 2017 3/14/2017 160 195 13 3 21 2017 3/21/2017 145 120 2 3 28 2017 3/28/2017 155 480 3 4 4 2017 4/4/2017 460 620 300 4 12 2017 4/12/2017 115 140 71 4 18 2017 4/18/2017 100 135 6 4 25 2017 4/25/2017 240 165 93 5 2 2017 5/2/2017 20 56 7 5 9 2017 5/9/2017 68 100 28 5 16 2017 5/16/2017 125 155 260 5 23 2017 5/23/2017 460 620 310 5 30 2017 5/30/2017 440 560 2 6 1 2017 6/1/2017 460 540 17 6 2 2017 6/2/2017 125 145 23 6 5 2017 6/5/2017 105 125 2 Page 2 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Coli orm Fecal MF MFC Broth 44.5 C lclu,1100 mt Month Day Year Date Upstream Dnstream Effkuent 6 6 2017 6/6/2017 420 560 3 6 7 2017 6/7/2017 125 160 6 6 12 2017 6/12/2017 210 185 4 6 13 2017 6/13/2017 155 270 3 6 14 2017 6/14/2017 130 165 22 6 19 2017 6/19/2017 145 125 4 6 20 2017 6/20/2017 135 155 6 6 21 2017 6/21/2017 110 125 7 6 26 2017 6/26/2017 130 110 42 6 27 2017 6/27/2017 115 145 8 6 28 2017 6/28/2017 60 84 6 7 3 2017 7/3/2017 155 175 14 7 5 2017 7/5/2017 68 104 8 7 6 2017 7/6/2017 110 135 43 7 10 2017 7/10/2017 92 44 32 7 11 2017 7/11/2017 420 480 16 7 12 2017 7/12/2017 123 105 31 7 17 2017 7/17/2017 130 110 14 7 18 2017 7/18/2017 120 155 6 7 19 2017 7/19/2017 60 80 4 7 24 2017 7/24/2017 125 115 1 7 25 2017 7/25/2017 115 140 1 7 26 2017 7/26/2017 540 460 12 7 31 2017 7/31/2017 125 100 1 8 1 2017 8/1/2017 136 115 1 8 2 2017 8/2/2017 56 96 8 8 7 2017 8/7/2017 135 180 10 8 8 2017 8/8/2017 20 36 1 8 9 2017 8/9/2017 36 56 1 8 14 2017 8/14/2017 135 155 1 8 15 2017 8/15/2017 12 20 1 8 16 2017 8/16/2017 8 12 1 8 21 2017 8/21/2017 12 20 1 8 22 2017 8/22/2017 28 56 1 8 23 2017 8/23/2017 8 12 1 8 28 2017 8/28/2017 16 24 1 8 29 2017 8/29/2017 36 84 1 8 30 2017 8/30/2017 8 12 1 9 5 2017 9/5/2017 16 28 1 9 6 2017 9/6/2017 12 28 1 9 7 2017 9/7/2017 36 56 1 9 11 2017 9/11/2017 11 16 1 9 12 2017 9/12/2017 185 145 1 9 13 2017 9/13/2017 8 12 1 9 18 2017 9/18/2017 20 44 1 Page 3 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Coll orm, Fecal MF, MFC Broth, 44.5 C_.(_ u 1 a0 rrtL� Month Day Year Date Upstream Dnstream Effkuent 9 19 2017 9/19/2017 130 150 1 9 20 2017 9/20/2017 16 28 1 9 25 2017 9/25/2017 36 44 1 9 26 2017 9/26/2017 440 580 1 9 27 2017 9/27/2017 56 84 1 10 3 2017 10/3/2017 170 195 6 10 10 2017 10/10/2017 420 560 7 10 17 2017 10/17/2017 130 170 3 10 24 2017 10/24/2017 520 660 32 10 31 2017 10/31/2017 125 145 14 11 7 2017 11/7/2017 110 130 6 11 14 2017 11/14/2017 32 80 4 11 21 2017 11/21/2017 76 92 4 11 28 2017 11/28/2017 125 145 11 12 5 2017 12/5/2017 60 60 8 12 12 2017 12/12/2017 125 135 15 12 19 2017 12/19/2017 60 72 37 12 28 2017 12/28/2017 56 84 6 1 2 2018 1/2/2018 16 28 4 1 8 2018 1/8/2018 16 36 1 1 16 2018 1/16/2018 52 76 8 1 22 2018 1/22/2018 51 72 6 1 29 2018 1/29/2018 145 185 6 2 5 2018 2/5/2018 135 178 61 2 12 2018 2/12/2018 175 220 65 2 19 2018 2/19/2018 115 80 3 2 26 2018 2/26/2018 154 155 2 3 5 2018 3/5/2018 130 110 2 3 13 2018 3/13/2018 20 36 2 3 20 2018 3/20/2018 740 660 210 3 27 2018 3/27/2018 110 140 2 4 3 2018 4/3/2018 105 84 1 4 9 2018 4/9/2018 145 260 1 4 16 2018 4/16/2018 480 580 280 4 23 2018 4/23/2018 440 540 1 4 30 2018 4/30/2018 110 145 9 5 7 2018 5/7/2018 135 155 2 5 14 2018 5/14/2018 68 100 8 5 21 2018 5/21/2018 175 205 5 5 28 2018 5/28/2018 125 180 6 4 2018 6/4/2018 155 190 220 6 5 2018 6/5/2018 125 150 6 6 6 2018 6/6/2018 52 64 23 6 11 2018 6/11/2018 110 100 4 6 12 2018 6/12/2018 165 195 290 Page 4 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Colifarm. Fecal MF. MFC Broth. 44.5 C �cfu/100 mLj Month Day Year Date Upstream Dnstream EfFkuent 6 13 2018 6/13/2018 105 125 32 6 18 2018 6/18/2018 56 96 6 6 19 2018 6/19/2018 110 82 12 6 20 2018 6/20/2018 130 105 10 6 26 2018 6/26/2018 160 205 5 6 27 2018 6/27/2018 440 560 280 6 28 2018 6/28/2018 500 580 8 7 2 2018 7/2/2018 120 155 15 7 3 2018 7/3/2018 520 560 16 7 5 2018 7/5/2018 135 115 2 7 9 2018 7/9/2018 160 185 1 7 10 2018 7/10/2018 110 145 3 7 11 2018 7/11/2018 120 135 1 7 16 2018 7/16/2018 135 155 65 7 17 2018 7/17/2018 180 195 47 7 18 2018 7/18/2018 460 .580 250 7 23 2018 7/23/2018 160 205 8 7 24 2018 7/24/2018 440 540 6 7 25 2018 7/25/2018 420 520 260 7 30 2018 7/30/2018 460 500 26 7 31 2018 7/31/2018 420 620 24 8 1 2018 8/1/2018 400 660 57 8 6 2018 8/6/2018 100 140 94 8 7 2018 8/7/2018 115 150 15 8 8 2018 8/8/2018 60 96 41 8 13 2018 8/13/2018 180 205 61 8 14 2018 8/14/2018 123 140 42 8 16 2018 8/16/2018 440 520 95 8 20 2018 8/20/2018 440 520 26 8 21 2018 8/21/2018 108 110 310 8 22 2018 8/22/2018 110 155 290 8 27 2018 8/27/2018 130 165 250 8 28 2018 8/28/2018 64 84 6 8 29 2018 8/29/2018 125 165 285 9 4 2018 9/4/2018 170 195 94 9 5 2018 9/5/2018 155 170 230 9 6 2018 9/6/2018 165 188 320 9 10 2018 9/10/2018 460 580 61 9 11 2018 9/11/2018 480 600 260 9 12 2018 9/12/2018 145 170 290 9 17 2018 9/17/2018 440 520 21 9 18 2018 9/18/2018 215 275 44 9 19 2018 9/19/2018 130 155 300 9 24 2018 9/24/2018 165 208 240 9 25 2018 9/25/2018 125 170 31 Page 5 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Coliform, Fecal MF MFC Broth 44.5 C c u 100 mL Month Day Year Date Upstream Dnstream Effkuent 9 26 2018 9/26/2018 440 560 290 10 1 2018 10/1/2018 420 500 31 10 8 2018 10/8/2018 145 155 24 10 16 2018 10/16/2018 220 245 12 10 22 2018 10/22/2018 125 160 4 10 31 2018 10/31/2018 145 180 49 11 5 2018 11/5/2018 150 170 6 11 13 2018 11/13/2018 460 580 250 11 19 2018 11/19/2018 130 150 31 11 26 2018 11/26/2018 620 780 220 12 3 2018 12/3/2018 155 195 270 12 12 2018 12/12/2018 480 620 270 12 17 2018 12/17/2018 165 195 2 12 27 2018 12/27/2018 500 620 2 12 31 2018 12/31/2018 155 125 59 1 7 2019 1/7/2019 105 120 6 1 14 2019 1/14/2019 60 88 36 1 22 2019 1/22/2019 110 135 250 1 30 2019 1/30/2019 120 140 300 2 4 2019 2/4/2019 155 195 18 2 11 2019 2/11/2019 125 145 6 2 18 2019 2/18/2019 480 580 210 2 26 2019 2/26/2019 170 52 250 3 4 2019 3/4/2019 48 80 1 3 11 2019 3/11/2019 155 440 210 3 18 2019 3/18/2019 115 160 220 3 25 2019 3/25/2019 110 140 6 4 1 2019 4/1/2019 145 170 1 4 8 2019 4/8/2019 130 155 250 4 15 2019 4/15/2019 225 265 1 4 23 2019 4/23/2019 180 245 310 4 29 2019 4/29/2019 100 110 5 5 6 2019 5/6/2019 110 130 8 5 13 2019 5/13/2019 480 620 22 5 20 2019 5/20/2019 460 520 16 5 28 2019 5/28/2019 145 195 1 6 3 2019 6/3/2019 120 155 1 6 4 2019 6/4/2019 110 160 7 6 5 2019 6/5/2019 140 220 5 6 10 2019 6/10/2019 700 880 310 6 11 2019 6/11/2019 520 660 220 6 12 2019 6/12/2019 328 420 62 6 17 2019 6/17/2019 460 520 16 6 18 2019 6/18/2019 580 680 47 6 19 2019 6/19/2019 165 210 260 Page 6 GB Perlmutter, rev. 9/10/2019 Spindale WWTP Instream Monitoring NCO020664 31616 - Coliform, Fetal ME MFC Broth. 44.5 C Ief6/100 mL Month Day Year Date Upstream Dnstream Effkuent 6 24 2019 6/24/2019 175 225 8 6 25 2019 6/25/2019 540 680 25 6 26 2019 6/26/2019 130 170 230 7 1 2019 7/1/2019 180 220 7 7 2 2019 7/2/2019 460 520 5 7 3 2019 7/3/2019 440 500 98 7 8 2019 7/8/2019 145 160 7 7 9 2019 7/9/2019 440 580 83 7 10 2019 7/10/2019 140 170 250 7 15 2019 7/15/2019 420 520 66 7 16 2019 7/16/2019 180 205 63 7 17 2019 7/17/2019 135 155 230 7 22 2019 7/22/2019 460 580 34 7 23 2019 7/23/2019 500 660 65 7 24 2019 7/24/2019 130 150 88 7 29 2019 7/29/2019 155 195 86 7 30 2019 7/30/2019 480 580 210 7 31 2019 7/31/2019 125 145 330 n 288 288 287 Geomean 126 159 14 Min 8 12 1 Max 740 880 330 Fecal Coliform Upstream Effkuent ♦ Dnstream 1,000 100 W;'46 iff S am *071P No A %jimm mn womft • is as ■ ■ ■ ■ ■ ■ ■ Is M ■ ■ IN 61; 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Date: June 23, 2014 I Effluent Aquatic Toxicity Report Form - Chronic Fathead Minnow Multi -Concentration Test Facility: S iindale WWTP NPDES #: NC 0020664 Pipe #: 001 County: Rutherford Laboratory Performing Test: Environmental Testing Solutions, Inc.Comments: Signature of Operator in Responsible Char e: Signature of Laboratory Supervisor: Pmiect 9842 Samples: 140602.03, 140604.31, 340606.24 I Mail Original To: North Carolina Department of Environment and Natural Resources DWQ/ Environmental Sciences Branch 1621 Mad Service CenterI Stare data: End date: Stert time: End time: Raleigh, NC 27699-1621 06-M-14 06-10-14 j 1130 1056 Replicate number 1 2 3 4 Control S ' ' number ofl"M 1 10 1 10 1 10 10 Organisms I OrWnalnumber of larvae 1 10 10 10 10 Weight/mi 'nil m ) 1 0.684 0.755 0,721 0.653 %Effluent ISurviving number of larvae 10 10 10 10 4.75% 0righ ai number of larvae 10 10 10 10 Weight/original (ra0arvaw , 0.846 1 0.724 1 0.775 1 0.733 % Effluent 94% ISurvivingnumberoflarvae 1 10 1 10 1 10 1 10 10riginal number of larvae I ' 10 1 10 1 10 I0 w ' on ' 0.696 1 0.675 10.731 1 0.892 Survival (%) 100.0 Average wt (mg) 0.703 Average wt / 0.703 surviving (m8) Survival (%) 100.0 Average wt (mg) = Survival(%) 100.0 Average wt (mg) 0.749 Test Organisms Outside supplier. i Agnmx, Inc. Hatch date: 06-02-14 Hatch time: 1600-1700 % Effluent Surviving number oflarvae 10 10 10 1 10 19% Original number of larvae 10 survival (%) F 100.0 w4h uodginal ( e) 0.981 0.807 0.789 1 0.868 Average wi (mg) 0.861 % Effluent Surviving number of larvae 10 10 10 10 38% OdF. na: numberoflarvm 10 10 10 10 Survival (%) F 100.o weit/o' inn1 (mg/larvae) 0.781 1 0.965 f 0.863 0.961 Average wt (mg) 0.893 % Effluent Survi ' number oflarvae 10. 10 10 10 76% ftinelmariberoflarvae 1 10 110 10 10 Survival (%) loo.o W ' u ' final(sngllarvas) 1 0.900 1 0.899 1 0.893 j 0.981 Average wt (mg) 1 0.918 Water Quality Data D o Day 1 1i1a 2 Day 3 Ra, 4 Dar 5 D 6 Initial Final Initial Fmmal Initial Final Initial, Final Initial Final Initial Final Initial Final Control 7.85 7.84 7.99 7.56 7.66 7.52 7.61 7.56 7.71 7.46 7.79 7.48 7.55 7.43 7.8 8.1 8.2 7.5 7.8 7.2 7.6 6.9 7.9 6.7 7.6 7.2 7.6 7.0 24.8 24.5 24.8 24.3 24.7 24.2 24.8 24.7 24.8 24.2 24.9 24.7 24.8 24.6 pH (SU): DO (mg/L): Temp. MY High Concentration pH (SU): DO (mg/L): Temp. M: 8.22 8.21 8.38 7.94 8.08 7.90 8.11 7.95 9.14 7.75 8.15 8.00 8.07 7.60 8.0 8.0 8.1 7.6 7.6 7.1 7.6 6.9 7.7 6.6 7.7 7.2 7.9 7.1 24.9 24.3 24.7 24 3 24.9 24.d, 25.0 24.6 25.0 24,3 25.0 24,4 24.9 24.4 Sample Information Collection start date: Grab: Composite duration: Allcalinity (mg/L CaCO3): Hardness (mg/L CaCO3): Conductivity (µmhos/em). Total residual chlorine (mg/L): Sample Temp, at Recaipt (°C): Overall Analysis: Analyses Survival Orowth Normal: Yes Yes Hom. Var. Yes yes NO;; 769A 760%. LOEC: >76% >76% ChV: >76% >76% Method: Visual Dunnelt's Survival GrowB, 1-%Effluenti Critical Calculated Critical Calculated 4.75% 2.410 -1.287 9.5*/a 2.410 4.879 19% 2.410 -3.070 38% 2.410 -3.677 76% 2.410 -4.173 Result:. PASS LOEC: >76% NOEC: 76% ChV: >76% DWQ form AT-5 ("3) • PO Box 7565 • Asheville, NC 28802 411 Phone: (828) 350-9364 ' Fax: (828) 350-9368 -TS Environmental Testing Solutions, Inc. E-mail: Jim@etsnclab.com Date: October 02 2015 Effluent Aquatic Toxicity Report Form - Chronic Fathead Minnow Multi -Concentration Test Facility: Spindale W WTP NPDES #: NC- 0020664 Pipe #: 001 County: Rutherford Laboratory Performing Test: Environmental Testing Solutions, Inc. _ Comments: Signature of Operator in Responsible Charge: Signature of Laboratory Supervisor: r _ Froiect•. 10990 �l Samples: 15D914.01, 15D916.16, 150918.09 Mail Original To: North Carolina Department of Environment and Natural Resources DWQ/ Environmental Sciences Branch 1623 Mail Service Center I Stan date: End deft: Start time: Fnd time: Raleigh, NC 276.99-1623 1 09-15-15 09-22-15 1200 1 1104 Replicate number 1 2 3 4 Control Surviving number of larvae 10 1 D 10 9 Organisms Original number of larvae 10 10 10 10 Wei v el trust) 0.567 0.538 0.571 0.487 % Effluent Surviving number of larvae 10 1 10 1 10 10 4.75% JQWsllriumberoflarv.. 10 1 10 1 10 10 Weight/original ( mm) 1 0.531 1 0.549 1 0.556 1 0.631 % Effluent 9.5-/ % Effluent 19% % Effluent 38% Survi,6Z number oflarvae 10 1 10 1 10 110 ' insl number of larvae 10 1 10 1 10 1 0 Waightl ' 'ned (o44armj 0.486 0.596 1 0.665 1 0.555 Surviving number of larvae 10 1 10 1 10 1 10 lOnginal number of larvae 1 10 1 10 1 10 1 0 lWeigWoriginal ( ae 0.583 0.594 0.553 0.713 Surviving number of larvae 9 10 1 10 1 10 Original number of larvae 1 10 10 j 10 ] 0 Weighvoriginal (mg/larvae) 0.596 0.625 0.618 0.583 survived (%) 975 Average tat (mg) O.541 Average wt / rOS54 surviving (rap) Survival (%) 100.0 Average wt (mg) 1 0.567 Survival (-/o) 100.0 Average wt (mg) 1 0.576 Survival (%) 100.0 Average wt (mg) 0.611 Survival (-/o) 97.5 Average wt (mg) 0.606 Test Organisms Outside suvolier: I AAquatM Inc. Hatch date: 1 09-14-15 Hatch tune: 1600-1700 ET % Effluent Surviving number of larvae 9 1 10 9 1 10 76 % Orighadmanberoflarvae 1 10 1 10 10 110 Survival (%) 95.0 wei voriginal [ arvae) 1 0.561 1 0.601 1 0.655 1 0.692 Average wt (mg) 1 0.627 Water Quality Data Day 0 Day 1 Da 2 Day 3 4 Day 5 Day 6 Initial I Final Initial I Final Initial I Final Initial I Final Initial I Final Initial I Final I Initial I Final Control pH (SU): DO (mg/L.): Tarp. (°C): High Concentration pH (Su): DO (mg/L): Temp. (°C): 7.48 6.88 6.95 7.02 7.40 7.09 7.47 6.75 7.30 6.97 7.17 7.24 7.22 7.05 7.8 9.0 8.0 6.8 8.0 7.1 9.0 6.7 8.0 7.8 8.0 8.1 9.0 8.0 24.7 24.4 24.6 24.5 24.8 24.4 24.7 24.5 14.7 24.2 24.7 24A 24.8 24.6 8.12 7.70 7.71 7.82 8.03 7.72. 8.09 7.66 8.00 7,69 7.98 7.92 1.98 7.78 8.0 8.0 8.0 7.1 8.2. 7.7 3.0 6.5 8.0 7.9 7.8 8.1 8.0 8.1 24.8 24.4 24.7 24.6 25.0 24.4 24.8 24.6 24.9 24.3 24.8 24.5 24.9 24:6 Sample Information Collection start date: Grab: Composite duration: Alkalinity (mg/L CaCO3): Hardness (mg/L C-CO3): Conductivity (pmhos/cm): Total residual chlorine (mg/L): Sample Temp. at Receipt (°C): Overall Analysis: Analyses Normal: Hom. Var. NOEL: LOEC: Chv: Method: Survival Growth Yes Yes Yes Yes 76% 76% >76% >76% >76% >76% Visual Insp. DunneWs Survival Growtu %Effluent Critical I Calculated Critical Calculated 4.75% 2.410 -0.676 9.5% 2.410 -0.904 190A 2.410 -1.821 38% 2.410 -1.694 76% 2.410 -2.250 Result: PASS LOEC: >76% NOEC: 76% ChV: >76% DWQform AT-S (8103) tD PO Box7565 0 Asheville, NC 288028802 1� Phone: (828) 350-9364 Fax: (828) 350-9368 E-mail: Jim@etsnclab.com Environmental Testing Solutions, Inc. Date: January 03, 2017 Effluent Aquatic Toxicity Report Form - Chronic Fathead Minnow Multi -Concentration Test Facility: S indale WWTP NPDES #: NC-0020664 Pipe#: 001 County: Rutherford Laboratory Performing Test: Environmental Testing Solutions, Inc. Comments: Signature of Operator in Responsible Charge: 1(3l>i' Signature of Laboratory Supervisor: AL 50 in Project. 11947 Samples; 161206.01, 161207.30, 161209.13 Mail Original To: North Carolina Department of Environment and Natural Resources DWQ/ Environmental Sciences Branch 1621 Mail Service Center Start date: End date; Start time: End time: Raleigh, NC 27699-1621 12-06-16 12.13-16 1 0839 0753 Control Organisms % Effluent 4.75% % Effluent 9.S% % Effluent 19% Replicate number � z Surviving number of larvae 1 10 10 1 10 1 10 O ' • i nal number of larvae 10 10 10 10 Wei ht/original(mg/larvae) 1 0.720 0.698 10,709 0.744 [Surviving number of larvae --- F___j0__j 10 1 10 10 Original number of larvae 10 j 10 1 10 10 [Weigh dori5nal (mg/larvae) 1 0.502 1 0.637 1 0 739 1 0.630 Surviving number of larvae 1 10 1 10 10 1 10 Original number of larvae 10 10 10 10 e Wht/orifinal rm • larvaej 0.683 0.626 0.637 0.628 Surviving number of larvae 1 10 1 10 1 10 10 Original number of larvae 10 10 101 10 Wei t/original(m larvae) 1 0.622 J 0.567 1 0.688 1 0.771 survival (%) 1 100.0 Average wt (mg) 0.718 Average wt / 0.718 surviving (mg) Survival (%) 1.00.0 Average wt (mg) 1 0.627 Survival (%) 100.0 Average wt (mg) 0.644 Survival (%) 100.0 Average wt (mg) 0.662 Effluent Isurviving number of larvae1 10 1 10 1 10 10 [Ell Original number of larvae 10 1 10 j 10 1 10 Survival (%) 100.0 Weightloriginal (mg/larvae) 0.635 0,689 0.627 0.751 1 Average wt (mg) 0.676 % Effluent 76 Surviving number of larvae 10 10 1 10 1 10 Original number of larvae ] 0 10 10 10 Wei ht/o ' inal ( -larvae) 0.797 1 0.834 1 0.713 1 0.709 Water Quality Data Control PH (SU): 7.26 DO (mg/L): 7.9 Temp. (°C): 24,7 High Concentration PH (SU): F24.5 DO (mg/L): Temp. (°C): Sample Information Collection start date: Grab: Composite duration: Alkalinity (mg/L CaCO3); Hardness (mg/L CaCO3): Conductivity (pmhos/cm): Total residual chlorine (mg/L): Sample Temp. at Receipt (°C): Survival (%) 100.0 Average wt (mg) 0.763 Analyses Normal: Rom. Var. NOEC: LOEC: Chv: Method: Test Organisms Outside su liar: In-house Culture Begin hatch: 12-05-16 1600 End hatch: 12-06-16 0600 Survival Growth Yes Yes Yes Yes 76% 76% >76% >76% >76% >76% visual ln Dunnett's Survival Growth %Effluent Critical Calculated Critical Calculated 4.75% 2.410 1.972 9.5% 2.410 1.613 19% 2.410 1.211 38% 76% 2.410 2.410 0.918 -0.989 Overall Analysis: Result: PASS LOEC: >76% NOEC: 76% ChV: >76% DWQ form AT-S (8/03) Environmental Testing Solutions, Inc. . PO Box 7565 Asheville, NC 28802 Phone: (828) 350-9364 Fax: (828) 350-9368 E-mail: Jim@etsnclab.com Effluent Aquatic Toxicity Report Form - Chronic Fathead Minnow Multi-ConcenDate: Janu, 02 2019 tration Test Facility: S indale WWII' NPDES #: NC- 0020664 Pipe #: 001 County: Rutherford y' Laboratory Performing Test: Environmental Testing Solutions, Inc. Signature of gn Operator in Responsible Charge: Comments: Signature of Laboratory Supervisor: �) Project: 13792 Samples: 181203.01, 181205.27, ]81207.2q Mail Original To: North Carolina Department of Environment and Natural Resources DWQ/ Environmental Sciences Branch 1621 Mail Service Center Raleigh, NC 27699-1621 Start date: End date: Starttime: End time: 12-04-19 12-11-18 0830 0758 Replicate number 1 Control Surviving numberoflarvae 10 2 3 10 10 4 10 Test Organisms Organisms Original number of larvae 10 10 10 10 Source: Survival (%)Wfl Weighdorigina! (mg/larvae) 0.655 0.748 0.623. 0.684 Average wt (mg) In-house Culture Average wt / Effluent Surviving number of larvae 10 10 10 10 surviving (mg) Begin hatch: 12-03-18 1658 4.75 % Or ginal number of larvae 10 10 10 10 End hatch: 12-04-18 0605 Weight/original (rng/larvae) 0.593 0.620 0.622 0.564 Survival (%) 100.0 Average w[ (mg) 1 0 600 Effluent 9.5 % Surviving number oflarvae Original 10 10 number of'larvae 10 10 �478 Survival (%) 100.0 WeighUodginal (mg/larvae) 0.570 0590 Average wt (mg) 0.529 % Effluent Surviving number of larvae 10 ] 9% Original 10 10 10 nwnber of larvae 10 10 10 10 Survival / 100.0 WeighUoriginal (mg/larvae) 0.454 0.470 0.483 0.460 Average wt (ng) 0.467 %Effluent Surviving numberoflarvae 9 9 9 38% Original number oFlarvae 10 10 10 Survival (%) 92,$ Weight/on nal (mg/larvae) 0.295 0.311 0.349J�jj Average wt (mg) 0.320 % Effluent Surviving numberoflarvae 5 6 5 7 76 % Original number of larvae 10 10 10 10 Survival (%) 57.5 WeighUori (mg/larvae) 0.166 0.174 0.172 0.225 Average vn (mg) 0.184 Water Quality Data Day Initial Final Initialnay Final Initial ay Final initial ay Fine! Initial ay ay ay Control Final Initial Final Initial Final pH (SU): 7.68 7.60 7.80 7.57 DO (mg/L); 7.9 Z6 8.0 7.75 7.42 7.79 7.36 7.76 7.31 7.79 7.51 7.80 7.71 . .7 7.4 TAP (°C): 24.8 24.7 24.7 24.5 8.1 7.3 24.7 24.5 8.0 24.7 7.2 8.4 6.4 7.8 75 24.6 24.8 0 7 6 High Concentration 24.5 24.8 24.4 240 PH (SU): 7.78 DO (rng/L): 8.0 7.94 6.4 8.15 8.00 8.1 8.15 7.85 8.22 7.78 8.14 7.76 8.18 7.89 8.22 8.10 Temp. (°C): 25.0 24.6 7.3 24.8 24.5 8.2 7.2 24.9 24.5 8.1 ! 24.9 6.D 8.0 6.0 7.6 7.2 8.0 7.6 24.5 24.9 24.6 25.0 2d 7 �s n on Sample Information Collection start date: Grab: Composite duration: Alkalinity (mg(L CaCO3): Hardness (ni CaCO;): Conductivity (µmhos/cm): Total residual chlorine (mg/L): Sample Temp. at Receipt (°C): Overall Analysis: Result: FAIL LOEC: 9.5% NOEC: 4.75% ChV: Analyses wthNormal:esHorn. Var. sNOEC: H-Dou %LOEC: %ChV: %Method: ett-s Survival Growth %Effluent Critical Calculated Critical Calculated 4.75% 10.000 18.000 2.360 2.774 9.5% 10.000 18.000 2.360 5.315 19% 10.000 18.000 2.360 7.518 38% 10,000 12.000 2.360 17.762 76% 10.000 W000 6.7% - - - -- . - - DW® form AT-S (8/03) NPDES yr/mo/day Inspection Type 31 NCO020664 I1 12 19/06/1 17 18 ICI _J (Cont.) Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Inspector Mikal Willmer, with the Asheville Regional Office, conducted a compliance evaluation inspection of the Spindale WWTP on June 11, 2019. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with NPDES Permit No. NC0020664. Robert Lipscomb, back-up ORC, was present and assisted in the inspection. Overall the facility is being well operated and maintained. Spindale's WWTP has been undergoing upgrades for over a year and the new basins were recently placed into service. The last few upgrades are currently being finalized (EQ basin mixers, pumps and wiring). Mr. Lipscomb reports the influent composite sampler will be replaced soon due to issues with the old sampler. DMRs since the last inspection in 2017 were reviewed for any violations. No recurring violations or issues noted during the review. Some monitoring and one limit violation due to flow changes during construction. It was noted, at the time of the inspection, the new basins appear to have "dead" spots along the sloped edge. Debris collects along this side and has to be skimmed off by the operators. Currently this does not appear to be affecting treatment. There appears to be adequate mixing and aeration by the fine -bubble diffusers. The DO meters in the basin were reading from 0.8 to 2 mg/L. Operators are slowly regaining a healthy biota within the facility. Some floating solids were noted in the clarifiers, but did not appear to be flowing over the weir. Mr. Lipscomb states the effluent sampler was set to flow proportional by their calibration company. Recommend Spindale staff go over the process for setting the sampler to flow proportional with the calibration firm during their next visit. As a reminder, Spindale should continue to actively seek a Grade IV ORC replacement. Currently the only full-time Spindale operational staff are a Grade III and Grade I. Page# Permit: NCO020664 Owner - Facility: Spindale WWTP Inspection Date: 06/1112019 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? it ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Facilitv staff monitor DO H chlorine residual and utilize a sludge iud a as part of their process control. Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ ■ ❑ application? Is the facility as described in the permit? 0 ❑ ❑ ❑ # Are there any special conditions for the permit? M ❑ ❑ ❑ Is access to the plant site restricted to the general public? ! ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? M ❑ ❑ ❑ Comment: Spindale's permit expired July 31, 2018. The renewal application was submitted on January 26, 2018 The Permit is currently under review in central office. Facility is in the process of finalizing upgrades Upgrades were added to the permit in 2015. Facility was required to develop a mercury minimization plan within 180 days of the previous permit issuance. Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? M ❑ ❑ ❑ Is the flow meter operational? M ❑ ❑ ❑ (if units are separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ ■ Comment: Influent flow meter was reading approximately 1 MGD at the time of the inspection. The influent flow meter is used for permit compliance. Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ■ ❑ ❑ Is sample collected above side streams? ■ ❑ ❑ ❑ Is proper volume collected? M ❑ ❑ ❑ Is the tubing clean? M ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ❑ ❑ ❑ Celsius)? Is sampling performed according to the permit? ❑ ❑ ❑ Comment: Mr. Lipscomb indicated a new composite sampler would be installed at the headworks. Influent sampling is time composite. Page# 3 Permit: NC0020664 Inspection Date: 06/11/2019 Owner -Facility: SpindalewwTP Inspection Type: Compliance Evaluation Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? ❑ ❑ ❑ Is the screen free of excessive debris? ❑ ❑ ❑ Is disposal of screening in compliance? 0 ❑ ❑ ❑ Is the unit in good condition? 0 ❑ Comment: Grit Removal Yes No NA NE Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? e Is the grit free of excessive odor? ❑ ❑ ❑ # Is disposal of grit in compliance? El❑ El Comment: Grit removals stem was ul2graded and appears to handle increased flows better than the previous system. Equalization Basins Yes No NA NE Is the basin aerated? ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? ❑ ❑ ❑ Is the basin free of excessive grease? Are all pumps present? 0 ❑ 0 ❑ Are all pumps operable? ❑ ■ ❑ Are float controls operable? El 0 ❑ Are audible and visual alarms operable? El ❑ 0 ❑ # Is basin size/volume adequate? 0 ❑ ❑ Comment: EQ basin was recently used during heavy rains,• however, the basin's aerators and pumps are in the I}rocess of be![wired. EQ basin equipment is not fully operational. but will be soon. Aeration Basins Mode of operation Type of aeration system Yes No NA NE Ext. Air Diffused Page# 4 Permit: NCO020664 Inspection Date: 06/11/2019 Aeration Basins Is the basin free of dead spots? Are surface aerators and mixers operational? Are the diffusers operational? Is the foam the proper color for the treatment process? Does the foam cover less than 25% of the basin's surface? Is the DO level acceptable? Is the DO level acceptable?(1.0 to 3.0 mg/1) Owner - Facility: Spindale WWTP Inspection Type: Compliance Evaluation Yes No NA NE ❑ ■ ❑ ❑ ❑ ❑ 0 ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: Currently only Basin 2 is in use. Diffusers ap pear to be operating ro erl and DOs a ear adequate for the treatment process (0.8 to 2.3 mg/L). There were dead shots noted alon_q_ the far wall due to the sloped sides. There is sta nation and collection of ass -through debris which the operators skim off. It currently does not appear to be adversely affecting treatment. Secondary Clarifier Is the clarifier free of black and odorous wastewater? Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately '/< of the sidewall depth) Yes No NA NE ■ ❑ 1111 • ❑ ❑ ❑ ❑ ❑ ❑ M ❑ ❑ ❑ ❑ ❑ ❑ M ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ Comment: Clarifiers 1 &2 are in operation. Number 3 clarifier is not currently in use. ORC reports there are very little solids in the facility and they are slowly reestablishing biology. Sludge blankets are only a foot in either clarifier. Some floating solids were noted in the clarifier, but did not appear to be flowing over the weir. Aerobic Digester Yes No NA NE Is the capacity adequate? M ❑ ❑ ❑ Is the mixing adequate? M ❑ ❑ ❑ Is the site free of excessive foaming in the tank? M ❑ ❑ ❑ # Is the odor acceptable? 0 ❑ ❑ ❑ Page# 5 Permit: NCO020664 Inspection Date: 06/11/2019 Owner - Facility: Spindale WWTP Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE # Is tankage available for properly waste sludge? t ❑ ❑ ❑ Comment: S indale holds a Class Bland application Permit (WQ00019531 and contracts Southern Soil Builders for land application events. There appears to be adequate storage to properly waste when needed. Facility staff indicated they currently do not have high enough sludge blankets to waste. Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ❑ ❑ ❑ Are cylinders protected from direct sunlight? ❑ ❑ ❑ Is there adequate reserve supply of disinfectant? M❑ ❑ ❑ Is the level of chlorine residual acceptable? ❑ ❑ ❑ ■ Is the contact chamber free of growth, or sludge buildup? ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? ❑ ❑ 0 ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ 0 ❑ If yes, then what is the EPA twelve digit ID Number? (1000- If yes, then when was the RMP last updated? Comment: Chlorine gas is used on -site. S indale may eventually move to another means of disinfection. Mr. Lipscomb reports they test residuals prior to dechlorination. No issues resorted. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ E ❑ Is storage appropriate for cylinders? ❑ ❑ ❑ # Is de -chlorination substance stored away from chlorine containers? ❑ E ❑ ❑ Are the tablets the proper size and type? ❑ ❑ ■ ❑ Comment: Manual feeds stem currently. S indale is looking to Change this to flow proportion_a_ I. Facility has not had issues maintaining adequate chlorine feed for disinfection. Are tablet de -chlorinators operational? ❑ ❑ 0 ❑ Number of tubes in use? Comment: Flow Measurement - Effluent # Is flow meter used for reporting? Yes No NA NE ❑ ■ ❑ ❑ Page# 6 Permit: NCO020664 Owner - Facility: Spindale WWTp Inspection Date: 06/11/2019 Inspection Type: Compliance Evaluation Flow Measurement -Effluent z Is flow meter calibrated annually? Yes No NA NE Is the flow meter operational? ■ ❑ ❑ ❑ (if units are separated) Does the chart recorder match the flow meter? ■ ❑ ❑ ❑ Comment: S indale reports influent flow measurements. New effluent meter was calibrated b manufacturer and recent) installed as art of the u rades. Effluent Sam lin Is composite sampling flow proportional? Yes No NA NE Is sample collected below all treatment units? • ❑ ❑ ❑ Is proper volume collected? ❑ ❑ ❑ Is the tubing clean? ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ❑ ❑ ❑ Is the facility sampling performed as required by the permit (frequency, sampling type representative)? ❑ ❑ ❑ Comment: Sampling is )ccurri ig as require J by permit- Com osite sam lin is flow oronnrtinnni. Calibration com an ro rams the auto-sam ler. Recommend facilit staff o throu h the ro Mail in with the com an durin the next calibration. U stream /Downstream Sam P lin Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? ❑ ❑ ❑ Comment: Standb Power Is automatically activated standby power available? Yes No NA NE Is the generator tested by interrupting primary power source? ■ ❑ El Is the generator tested under load? ■ El El El Was generator tested & operational during the inspection? ■ ❑ ❑ ❑ Do the generator(s) have adequate capacity to operate the entire wastewater site? ❑ ■ ❑ ❑ Is there an emergency agreement with a fuel vendor for extended run on back-upEl power? ❑ . Is the generator fuel level monitored? � ❑ ❑ ❑ Comment: New enerator tests automaticall i and is maintained b cam electric. Page# 7 United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 L��, � 2 15 I 3 NCO020664 11 12 19/06/11 17 18 L o J 19 us2OI 21111l f l 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 f 1 f 1 1 l I f Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA 671 70 I I 71 72 lJ Section B: Facility Data LJ Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Spindale WWTP Ecology St Spindale NC 28160 Name(s) of Onsite Representative(s)/Titles(syPhone and Fax Number(s) /// Robert Eugene Lipscomb/ORC/828-286-3407/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Robert Eugene Lipscomb,132 Wilkins St Forest City NC 28043//828-286-3407/ No ■ Pretreatment -----Reserved-- 73L U74 75 1 1 1 1 80 Entry Time/Date I Permit Effective Date 02:30PM 19/06/11 1 15/10/01 Exit Time/Date Permit Expiration Date 04:40PI 19/06/11 18/07/31 Other Facility Data Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Mikal Willmar Vivian Zhong Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers DWR/Division of Water Quality/828-296-4686/ DWR/Pretreatment Unit/919-807-6310/ EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Agency/Office/Phone and Fax Numbers Date Date Page# 1 NPDES yr/mo/day Inspection Type 3 NC0020664 11 12 19/06/11 17 18 P (Cont.) Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Mikal Willmer, with the Asheville Re ' I g.lona Office, and vlvlen Zhong, with the Central Office, conducted a Pretreatment Compliance Inspection of the Town of Spindale's Pretreatment Program under Permit No. NC0020664. The inspection was conducted to determine whether the program is being managed and maintained in compliance with all Pretreatment regulations. Robert Lipscomb (Backup ORC) was present and assisted in the inspection. Overall the program appeared to be well maintained and all sampling is being reported on Monthly DMRs. SIUs are sampling in accordance with their IUPs. Refer to the attached PCI Report for additional information. Page# NH3/TRC WLA Calculations Spindale WWTP PermitNo. NCO020664 Prepared By: Gary Perlmutter Enter Design Flow (MGD): 3 Enter s7Q10 (cfs): 20 Enter w7Q10 (cfs): 26 Total Residual Chlorine (TRC) Daily Maximum Limit (ug/1) Ammonia (Summer) Monthly Average Limit (mg NH3-N/1) s7Q10 (CFS) 20 s7Q10 (CFS) 20 DESIGN FLOW (MGD) 3 DESIGN FLOW (MGD) 3 DESIGN FLOW (CFS) 4.65 DESIGN FLOW (CFS) 4.65 STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0 Upstream Bkgd (ug/1) 0 Upstream Bkgd (mg/1) 0.22 IWC (%) 18.86 IWC (%) 18.86 Allowable Conc. (ug/1) 90 Allowable Conc. (mg/1) 4.4 Ammonia (Winter) Monthly Average Limit (mg NH3-N/1) Fecal Coliform w7Q10 (CFS) 26 Monthly Average Limit: 200/100ml DESIGN FLOW (MGD) 3 (If DF >331; Monitor) DESIGN FLOW (CFS) 4.65 (If DF<331; Limit) STREAM STD (MG/L) 1.8 Dilution Factor (DF) 5.30 Upstream Bkgd (mg/1) 0.22 IWC (%) 15.17 Allowable Conc. (mg/1) 10.6 Total Residual Chlorine 1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity Ammonia as NH3-N 1. If Allowable Conc > 35 mg/I, Monitor Only 2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I 3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I Fecal Coliform 1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni) J IL Q 0 C L d V ti c0 Q V V O y L O � � � 3 N cc �a IL L ~ N r.. d � DI z i 3 0 w 0 a 2 U W U fT a) 01 CD✓� `Cr] m 01 CA dI •7 t71 Ol `i,3) 70 7 7 C.3 7 7 7. 7. 7 7 7 7 M.11 O o N O M 1� 0 M co O Q i7 p O Cp Q Cy ti � Q O COO M O M Z O CO O '"' Z N O LQ Z N' Cl? co CISC co C M co LL = LL LL LL LL LL U- LL LL LL LL LL= LL LL LL LL 2 n cs N O O O CD LO LO Q CI)Q N S O O O r o CD CMO N M � Z Iq O (b M '- CC3 N O O O N 0p M N Ui co m N U U Z Z Z .�' Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z z U u 0 u Y o u y g .2 o 0 2 o y u � u 2 P Jj ❑ N i L N 7 f0 7 M l0 7 f0 7 N 7 l0 7 P, 4 > lo 7 > m 3 r cc •m 7 c; •m 7 •m 7 C N E i Q Q Q Q Q Q Q Q Q Q C rr 2 = }� Q Q = CL c E 6 L) o E E .0 o E m a� E c o c 3 E a E a m u e °e o 0 o c° E E? a, o m U o 9 >_ E Q Q L E U V J O Z Z N U U d. j L CO Q d U U t z U _ e L U 0 0 o o• o 0 o r `� m a� o w� a a a a a m m a a d a a a a a a a as a as a s m cc co IL a s 3 � o O U � N p C m O m CDCoM L COU Z CD n U PA p R E a E U) z a 3 = E t� w a w— > z E a CO 0 CD v LL Z O LL OC 2 fM U • i 1 t ! ! I=LD 1 ! ! {aN 3 1 1 1 IcEoo� ! ! IvNiaLo vi '�!o I I 1 1S3o@ mt a,l i ¢ial0,lmlS It c; O O O C. - I J I E I E I&� j y O N COLO N M N CO EIo,1�INIy E V*- 2- —m E� ojINININh N 7 N aE_> Igo.=_ N Ea I I I I10 (5- ` 1 I 12S 1 1 1 lom50 i lol°= 1 tsl� U I J 3 to U) MI U) ml m LU O P w c) ci C cll `m) V = H �`a '1=t=ix � =I Eldld 3 ZI .+ S 0 Q CDO N cy 0 „I `Im m 0ICL EIE w :? u U Q C! d M c9 C3 O O wj>10,V !o 0 ❑ 7CL W O •— N Q O � O 3 L N LL Co CO O N REASONABLE POTENTIAL ANALYSIS H1 H2 Use "PASTE SPECIAL, Effluent Hardness then "COPY" 6laximum data _ dvalaes" points = 5E Date Data BDL=112DL Results 1 5/29/2014 39 39 Std Dev. 4.� r 4 1 2 8/27/2015 38.4 38.4 Mean 39.7375 2 3 11/8/2016 50.5 50.5 C.V.(default) 0.6000 3 4 9/17/2019 35 35 n 8 4 5 9/18/2019 39 39 10th Per value 37.10 mg/L 5 6 9/19/2019 38 38 Average Value 39.74 mg/L 6 7 9/20/2019 39 39 Max. Value 50.50 mg/L 7 8 9/21 /2019 39 39 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 52 53 53 54 54 55 55 56 56 57 57 58 1 58 Upstream Hardness Date Data BDL=1/2DL Results 25 25 Std Dev. Mean C.V. n 10th Per value Average Value Max. Value .hnt "PASTE SPECL Values" then "COP . Maximum data prints = 51 25.0000 0.0000 1 25.00 mg/L 25.00 mg/L 25.00 mg/L 20664 Freshwater RPA, data -1 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par01 & Par02 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Arsenic Date Data BDL=112DL 9/6/2016 < 2.5 1.25 11 /8/2016 < 2.5 1.25 12/6/2016 < 2.5 1.25 3/14/2017 < 2.5 1.25 6/6/2017 < 2.5 1.25 12/5/2017 < 2.5 1.25 3/6/2018 < 2.5 1.25 6/5/2018 < 2.5 1.25 9/11/2018 < 2.5 1.25 12/27/2018 < 2.5 1.25 3/5/2019 < 2.5 1.25 6/4/2019 < 2.5 1.25 _ UW "PASTE 5PEG vaf u us- m on "c OF _ WA-Imum amr pgln� 5aJ Results Std Dev, 0.0000 Mean 1.2500 C.V. 0.0000 n 12 Mult Factor = 1.00 Max. Value 1.3 ug/L Max. Fred Cw 1.3 ug/L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 20664 Freshwater RPA, data 2- 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par04 Cadmium Date Data BDL=112DL Results 1 9/6/2016 < 0.5 0.25 Std Dev. 2 11/8/2016 < 2 1 Mean 3 12/6/2016 < 0.5 0.25 C.V. 4 3/14/2017 < 0.5 0.25 n 5 6/6/2017 < 0.5 0.25 6 12/5/2017 < 0.5 0.25 Mult Factor = 7 3/6/2018 < 0.5 0.25 Max. Value 8 6/5/2018 < 0.5 0.25 Max. Pred Cw 9 9/11/2018 < 1 0.5 10 12/27/2018 < 0.5 0.25 11 3/5/2019 < 0.25 0.125 12 6/4/2019 < 0.5 0.25 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use"PASTE SPED Vsl+ue," then "car Maximum data points . 58 0.2290 0.3229 0.7091 12 1.75 1.000 ug/ 1.750 ug/ Par05 Chlorides Date Data BDL=1/2DL Results 1 12/1/2015 215 215 Std Dev. 2 3/8/2016 180 180 Mean 3 6/7/2016 285 285 C.V. 4 9/6/2016 210 210 n 5 12/6/2016 230 230 6 3/14/2017 168 168 Mult Factor = 7 6/6/2017 170 170 Max. Value 8 9/27/2017 385 385 Max. Pred Cw 9 12/5/2017 106 106 10 3/6/2018 180 180 11' 6/5/2018 103 103 12 9/11/2018 155 155 13 12/27/2018 80 80 14 3/5/2019 148 148 15 6/4/2019 41.5 41.5 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 I 58 Use " PAS t'E 5PPCIAI val"c", tne.I "COPY" MOIIDItIm eJata p�vts 84.5277 177.1 0.4773 15 1.4 385.0 mg/L 535.2 mg/L -3- 20664 Freshwater RPA, data 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par06 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 uw'PASTE BPECIA Chlorinated Phenolic Compounds valuui tha"-ccPry M&-mum data PWrn5 = 5& Date Data BDL=1/2DL Results Std Dev. NC, C7,4T.A Mean NO DATA C.V. NO DATA n 0 Mult Factor = N/A Max. Value N/A ug/L Max. Pred Cw N/A ug/L Pare7 Total Phenolic Compounds Date Data 1 5/29/2014 < 2 8/27/2015 < 3 11/9/2016 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 BDL=112DL Results 5 2.5 Std Dev. 5 2.5 Mean 5 2.5 C.V. (default) n Mult Factor = Max. Value Max. Pred Cw ur. "PASTE RPM Values' U140 —COF MaAini nr data pal nls - So 2.5000 0.6000 3 3.00 2.5 ug/L 7.5 ug/L 4- 20664 Freshwater RPA, data 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par08 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 _I Use "PASTE SPFQA Chromium III vane,"then "Cow . Miximum data points = 5E Date Data BDL=112DL Results Std Dev. NO DATA Mean NO DATA C.V. NO DATA n 0 Mult Factor = N/A Max. Value N/A Ng/L Max. Fired Cw N/A Ng/L Par09 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -5- 20664 Freshwater RPA, data 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par10 Chromium. Total Date Data BDL=112DL Results 1 9/6/2016 < 2.5 1.25 Std Dev. 2 11/8/2016 < 5 2.5 Mean 3 12/6/2016 < 2.5 1.25 C.V. 4 3/14/2017 < 2.5 1.25 n 5 6/6/2017 < 2.5 1.25 6 12/5/2017 < 2.5 1.25 Mult Factor = 7 3/6/2018 < 2.5 1.25 Max. Value 8 6/5/2018 < 2.5 1.25 Max. Pred Cw 9 9/11/2018 < 2.5 1.25 10 12/27/2018 2.6 2.6 11 3/5/2019 < 2.5 1.25 12 6/4/2019 < 2.5 1.25 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECM vWUSS" then "COPY' . M"Mam data paints - H i 1.4667 0.3453 12 1.34 2.6 pg/L 3.5 pg/L Pall Copper Date Data BDL=1/2DL Results 1 9/15/2015 34 34 Std Dev. 2 12/1/2015 44 44 Mean 3 3/8/2016 65 65 C.V. 4 6/7/2016 Z., 27 n 5 9/6/2016 28 28 6 11/8/2016 54 54 Mult Factor = 7 9 Max. Value 8 3/14/2017 36 36 Max. Pred Cw 9 6/6/2017 10 10 10 9/27/2017 21 21 11 12/5/2017 17 17 12 3/6/2018 42 42 13 6/5/2018 33 33 14 9/11/2018 57 57 15 12/27/2018 20 20 16 3/5/2019 38 38 17 6/4/2019 38 38 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 thu "PASTE SPEGW. Val c,-' then-Cof-Y" . Marlmum data POW to a So 16.6828 37.2353 0.4480 17 1.32 69.00 ug/L 91.08 ug/L 20664 Freshwater RPA, data 6 - 10/18/2019 REASONABLE POTENTIAL ANALYSIS Par12 Date Data 1 9/6/2016 < 2 11/8/2016 < 3 12/6/2016 < 4 3/14/2017 < 5 6/6/2017 < 6 12/5/2017 < 7 3/6/2018 < 8 6/5/2018 < 9 9/11/2018 < 10 12/27/2018 < 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Cyanide BDL=112DL Results 5 5 Std Dev. 5 5 Mean 5 5 C.V. 5 5 n 5 5 5 5 Mult Factor = 5 5 Max. Value 5 5 Max. Fred Cw 5 5 5 5 Use"PASTE SPECAL Values" then "COPY' Maximum dai, points s. 58 0.00v0 5.00 0.0000 10 1.00 5.0 ug/L 5.0 ug/L Par14 Use"PASTE SPECIAL Lead Value ", n ",OP,- . rAaxinrom Masi points = 1*4 4 J Date BDL=112DL Results 1 9/6/2016 < 2.5 1.25 Std Dev. 0.4418 2 11/8/2016 < 5 2.5 Mean 1.3045 3 12/6/2016 < 2.5 1.25 C.V. 0.3387 4 3/14/2017 < 2.5 1.25 n 11 5 6/6/2017 < 2.5 1.25 6 12/5/2017 < 2.5 1.25 Mult Factor = 1.36 7 3/6/2018 < 2.5 1.25 Max. Value 2.500 ug/L 8 6/5/2018 < 2.5 1.25 Max. Pred Cw 3.400 ug/L 9 9/11/2018 < 2.5 1.25 10 12/27/2018 < 2.5 1.25 11 3/5/2019 < 1.2 0.6 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 20664 Freshwater RPA, data -7- 10/18/2019 REASONABLE POTENTIAL ANALYSIS 6 Date Data 1 9/6/2016 2 12/6/2016 < 3 3/14/2017 < 4 6/6/2017 5 12/5/2017 < 6 3/6/2018 < 7 6/5/2018 < 8 9/11/2018 < 9 12/27/2018 < 10 3/5/2019 < 11 6/4/2019 < 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Um `PASTE SPECIA Molybdenum vAI"`5� then ^GORY Maximum data p0 n15=58 BDL=112DL Results 3 3 Std Dev. 0.7079 2.5 1.25 Mean 1.5682 2.5 1.25 C.V. 0.4514 3 3 n 11 2.5 1.25 2.5 1.25 Mult Factor = 1.50 2.5 1.25 Max. Value 3.0 ug/L 2.5 1.25 Max. Pred Cw 4.5 ug/L 2.5 1.25 2.5 1.25 2.5 1.25 Par17 & Par18 Nickel Date Data BDL=112DL Results 1 9/6/2016 10 10 Std Dev. 2 11/8/2016 7 7 Mean 3 12/6/2016 6 6 C.V. 4 3/14/2017 13 13 n 5 6/6/2017 10 10 6 12/5/2017 6 6 Mult Factor = 7 3/612018 8 8 Max. Value 8 6/512018 7 7 Max. Pred Cw 9 9/11/2018 9 9 10 12/27/2018 2.9 2.9 11 3/5/2019 4 4 12 6/4/2019 6 6 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 dim "PASTE SPECL Valaw dlen "COP Maximum data P07n25 -!-a 7.4083 0.3770 12 1.38 13.0 Ng/L 17.9 Ng/L -8- 20664 Freshwater RPA, data 10/18/2019 REASONABLE POTENTIAL ANALYSIS Selenium Date Data BDL=l/2DL Results 1 8/27/2015 < 5 2.5 Std Dev. 2 9/15/2015 < 2.5 1.25 Mean 3 12/1/2015 < 2.5 1.25 C.V. 4 3/8/2016 < 2.5 1.25 n 5 6/7/2016 < 2.5 1.25 6 9/6/2016 < 2.5 1.25 Mult Factor = 7 11/8/2016 < 5 2.5 Max. Value 8 12/6/2016 < 2.5 1.25 Max. Pred Cw 9 3/14/2017 < 2.5 1.25 10 6/6/2017 < 2.5 1.25 11 9/27/2017 < 2.5 1.25 12 12/5/2017 < 2.5 1.25 13 3/6/2018 < 2.5 1.25 14 6/5/2018 2.5 2.5 15 9/11/2018 < 2.5 1.25 16 12/27/2018 < 2.5 1.25 17 3/5/2019 < 2.5 1.25 18 6/4/2019 < 2.5 1.25 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL Parcel Values" then "COPY' Muimam data pnints - 58 1.4583 0.3287 18 1.22 2.5 ug/L 3.1 ug/L Silver Date Data BDL=1/2DL Results 1 9/15/2015 < 2.5 1.25 Std Dev. 2 12/1/2015 < 2.5 1.25 Mean 3 3/8/2016 < 2.5 1.25 C.V. 4 6/7/2016 < 2.5 1.25 n 5 9/6/2016 < 2.5 1.25 6 11/8/2016 < 5 2.5 MultFactor= 7 12/6/2016 < 2.5 1.25 Max. Value 3/ 1.25 Max. Pred Cw 9 6/6/2017 < 2.5 1.25 10 9/27/2017 (D3_ 3 11 12/5/2017 < 2.5 1.25 12 3/6/2018 2.. 2.5 13 6/5/2018 < 5 1.25 14 9/11/2018 < 2.5 1.25 15 12/27/2018 < 2.5 1.25 16 3/5/2019 < 2.5 1.25 17 6/4/2019 < 2.5 1.25 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECI Vainc; ' theo'COO Maximum data points - 58 1.5000 0.3773 17 1.27 3.000 ug/L 3.810 ug/L -9- 20664 Freshwater RPA, data 10118/2019 REASONABLE POTENTIAL ANALYSIS Par21 Zinc Date Data BDL=1/2DL Results 1 9/15/2015 107 107 Std Dev. 2 12/1/2015 84 84 Mean 3 3/8/2016 121 121 C.V. 4 6/7/2016 87 87 n 5 9/6/2016 126 126 6 11/8/2016 76 76 MultFactor= 7 12/6/2016 76 76 Max. Value 8 3/14/2017 72 72 Max. Pred Cw 9 6/6/2017 36 36 10 9/27/2017 27 27 11 12/5/2017 48 48 12 3/6/2018 196 196 13 6/5/2018 79 79 14 9/11/2018 88 88 15 12/27/2018 90 90 16 3/5/2019 218 218 17 6/4/2019 178 178 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 J" "PASTE SPECIAL Yatuae" than "COPY" Maximum (lass pants = SS Par22 1 Date Data 5/29/2014 Antimony BDL=1/2DL 52 52 v! Results Std Dev. ua� "aa8re SPECIAL Ij Value" Ivan -copy,. . rA „nUm aasa Qw nta = 58 +; •� �j : I: t. i 100.5294 2 8/27/2019 53 53 Mean 39.1667 0.5308 3 11/9/2016 < 25 12.5 C.V. (default) 0.6000 17 4 n 3 5 1.39 6 Mult Factor = 3.00 218.0 ug/L 7 Max. Value 53.000000 Ng/L 303.0 ug/L 8 Max. Pred Cw 159.000000 Ng/L 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 20664 Freshwater RPA, data -10- 10/18/2019 a y tnmvrnto V e9 M A to co N P. 00 CO � � d' O N to ul)a �r-n t-I tiN<o o!ao.-r P- �aoui— � 'vi II II II II II � w CioO_oau P. co C � a Z 0 a � Q _A G E. o O In to Q 0 Q = Y L r V = T o0000t ontoSC!C , N ` CD tG W) N to V;N Nco cc LL II II II II II II � Qi o0 3~2�oa. w b �u d co I I I I t I I I I m m I Iy I to o Iz I I I I m3 I� I� I I I I Ew E `° I I� I I� I� I E ? v E 2 Z I I` Iw c IE to I. o Iw I I i� a I I I o Iz I¢ I IE I I m o w o j jo o jE lob, to I IE I I o F- F z I I� i° ILo ILo v I Iz f I I IJ 04 I �v Ix I IJ 1 I dD I IN I� INa Ion I 7 i� I I cr as I I� Iv Iv= IDg I I� I�oa la`s I I� I I E?U a) 11.2I I E Lo g o I IZ ro Iz d IZ.£ Iz I Iz I I z° my I I I N I I IN Ir oo I I� I li- a I Imo! O I I CY I'" � lo` Iv IM D IM O IN 30 leo I I� r 1v00 v 3 jam" N z z I z IN I I '> v j I 1 I� N p I 4I �n I I I c I I 1 O N 13`1III��,,� II to w w h h w �' W) Q Q M m M O VNI o W tY O �t CI d\ � CI za zSIM a a a 10d en M o C _o w w F- Q M O U w a o o O a O a a ° a a a G 2�. to U O ON oo m M �-- O e+1 ••-� z QQ U �C IO o N m oo w yo. F z z z z z z z z v o a 'D c E 0 c 1° F > y !� 0 O E E " " > v o E c a r L o a c=i d m c a A � o o L U 0 d CD a to I � I? iZ I E J I. M to Ic I� I la O I? I i •y i0 i.' i€ i� a io i m io i •� g j3 d o Ia I I I I I i ° io z I° a Io I a 10 I 10 IN I i I O I O I Ia Ide I I o �� I I I I iz ILj I I I ILo I i I I t`i N I� a � 110 I ` o I m IIV I I Im I- �U� a lyjlInd I� m 1= I�0i7 ma I I�� la la�l la lam I m IDa I„E m` E a I I i H � Iv o Iz.o �I I� �I la iP is I I t la I m iOct iI o I I I I of ro IZd oaf IZoI 1pO I a Io`o 0o Iz z� zm E I I I v, t� 3 •, I IN oi M I°�° I� � IN ICU$ I I Im Ih oo I c ,. Im 3 �v o w Iv 3m I� 3 I�.UMUvJ �, :a° I N �D° I o I A �; IU m1 3 I I 3 I A N IM I I I O`"d IAA � AI� °' I� I� I� �¢ I� ¢ I I I R tlJ ¢ I adI° o Io � I� � I� I� °d .3 � N ? ° A n w �� y I ca 8 I� F I II zIU ti M M z � � •y "Vv U cV N VI "o 4. LCJ a ° ab x r+' o 10 0 � M h y O I w li n N vni `o In Ic M M p oo M O cpl .Mi �c O a O a p a O a O a O O a a O a O a O w xxo + d 3 c M M o t*-: p v o o y 0O M N C, N O M L Z z Z z z z Z 2 Z 2 E m o o U W U m J a �` C iY7 Z tY.1 C Z m m > — N C N o E c I m rn EL o d� �o tL CD co Permit No. NCO020664 NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as approved. Table 1. NC Dissolved Metals Water Quality Standards/Aquatic Life Protection Parameter Acute FW, µg/l (Dissolved) Chronic FW, µg/l (Dissolved) Acute SW, µg/1 (Dissolved) Chronic SW, µg/1 (Dissolved) Arsenic 340 150 69 36 Beryllium 65 6.5 --- --- Cadmium Calculation Calculation 40 8.8 Chromium III Calculation Calculation --- --- Chromium VI 16 11 1100 50 Copper Calculation Calculation 4.8 3.1 Lead Calculation Calculation 210 8.1 Nickel Calculation Calculation 74 8.2 Silver Calculation 0.06 1.9 0.1 Zinc Calculation Calculation 90 81 Table 1 Notes: 1. FW= Freshwater, SW= Saltwater 2. Calculation = Hardness dependent standard 3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life standards for Mercury and selenium are still expressed as Total Recoverable Metals due to bioaccumulative concerns (as are all human health standards for all metals). It is still necessary to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC 2B.0200 (e.g., arsenic at 10 µg/l for human health protection; cyanide at 5 µg/L and fluoride at 1.8 mg/L for aquatic life protection). Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A NCAC 02B .0211 Subparagraph (11)(d) Metal NC Dissolved Standard, µg/I Cadmium, Acute WER*{1.136672-[In hardness](0.041838)} a^{0.9151 [In hardness]-3.1485} Cadmium, Acute Trout waters WER* {1. 136672-[In hardness](0.041838)} a^{0.9151[In hardness]-3.6236} Cadmium, Chronic WER*{1.101672-[ln hardness](0.041838)} e^{0.7998[ln hardness]-4.4451} Chromium III, Acute WER*0.316 e^{0.8190[ln hardness]+3.7256} Chromium III, Chronic WER*0.860 a^{0.8190[ln hardness]+0.6848} Copper, Acute WER*0.960 e^{0.9422[ln hardness]-1.700} Copper, Chronic WER*0.960 a^{0.8545[ln hardness]-1.702} Lead, Acute WER*{1.46203-[In hardness](0.145712)) e^{1.273[ln hardness]-1.460} Lead, Chronic WER*{1.46203-[In hardness](0.145712)) a^{1.273[In hardness]-4.705) Nickel, Acute WER*0.998 e^{0.8460[ln hardness]+2.255) Nickel, Chronic WER*0.997 e^{0.8460[ln hardness]+0.0584) Page 1 of 4 Permit No. NCO020664 Silver, Acute WER*0.85. • e^{1.72[ln hardness]-6.59} Silver, Chronic Not applicable Zinc, Acute WER*0.978 a^{0.8473[ln hardness]+0.884} Zinc, Chronic WER*0.986 e^{0.8473[ln hardness]+0.884} General Information on the Reasonable Potential Analysis PA The RPA process itself did not change as the result of the new metals standards. However, application of the dissolved and hardness -dependent standards requires additional consideration in order to establish the numeric standard for each metal of concern of each individual discharge. The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness and so must be calculated case -by -case for each discharge. Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The discharge -specific standards must be converted to the equivalent total values for use in the RPA calculations. We will generally rely on default translator values developed for each metal (more on that below), but it is also possible to consider case -specific translators developed in accordance with established methodology. RPA Permittin Guidance/W BELs for Hardness -De endent Metals - Freshwater The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern, based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable standards and the critical low -flow values for the receiving stream. If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below detection level), then the Division may remove the monitoring requirement in the reissued permit. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the following information: • Critical low flow of the receiving stream, 7Q10 (the spreadsheet automatically calculates the 1 Q 10 using the formula 1 Q 10 = 0.843 (s7Q 10, cfs) 0.993 • Effluent hardness and upstream hardness, site -specific data is preferred • Permitted flow • Receiving stream classification 2. In order to establish the numeric standard for each hardness -dependent metal of concern and for each individual discharge, the Permit Writer must first determine what effluent and instream (upstream) hardness values to use in the equations. The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any hardness data and contacts the Permittee to see if any additional data is available for instream hardness values, upstream of the discharge. If no hardness data is available, the permit writer may choose to do an initial evaluation using a default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively. If the use of a default hardness value results in a hardness -dependent metal showing reasonable potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and upstream hardness samples over a period of one week. The RPA is rerun using the new data. Page 2 of 4 Permit No. NCO020664 The overall hardness value used in the water quality calculations is calculated as follows: Combined Hardness (chronic) _ (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L) + (s7Q10, cfs *Avg. Upstream Hardness, mg/L) (Permitted Flow, cfs + s7Q10, cfs) The Combined Hardness for acute is the same but the calculation uses the 1Q10 flow. 3. The permit writer converts the numeric standard for each metal of concern to a total recoverable metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any have been developed using federally approved methodology. EPA default partition coefficients or the "Fraction Dissolved" converts the value for dissolved metal at laboratory conditions to total recoverable metal at in -stream ambient conditions. This factor is calculated using the linear partition coefficients found in The Metals Translator: Guidance for Calculating a Total Recoverable Permit Limit from a Dissolved Criterion (EPA 823-B-96-007, June 1996) and the equation: Cdiss = 1 Ctotal 1 + { [Kpo] [ss(i+a)] [10-6] } Where: ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used, and Kpo and a = constants that express the equilibrium relationship between dissolved and adsorbed forms of metals. A list of constants used for each hardness -dependent metal can also be found in the RPA program under a sheet labeled DPCs. 4. The numeric standard for each metal of concern is divided by the default partition coefficient (or site -specific translator) to obtain a Total Recoverable Metal at ambient conditions. In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is dissolved to the same extent as it was during EPA's criteria development for metals. For more information on conversion factors see the June, 1996 EPA Translator Guidance Document. 5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration (permit limits) for each pollutant using the following equation: Ca = (s7Q10 + Qw) (Cwgs) — (s7010) (Cb) Qw Where: Ca = allowable effluent concentration (µg/L or mg/L) Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L) Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L) Qw = permitted effluent flow (cfs, match s7Q10) s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human health through the consumption of water, fish, and shellfish from noncarcinogens (cfs) * Discussions are on -going with EPA on how best to address background concentrations Flows other than s7Q10 may be incorporated as applicable: 1Q10 = used in the equation to protect aquatic life from acute toxicity Page 3 of 4 Permit No. NC0020664 QA = used in the equation to protect human health through the consumption of water, fish, and shellfish from carcinogens 30Q2 = used in the equation to protect aesthetic quality 6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern. Data entered must have been taken within four and one-half years prior to the date of the permit application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper concentration of each pollutant. The Predicted Max concentrations are compared to the Total allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds the acute or chronic Total allowable concentrations, the discharge is considered to show reasonable potential to violate the water quality standard, and a permit limit (Total allowable concentration) is included in the permit in accordance with the U.S. EPA Technical Support Document for Water Quality -Based Toxics Control published in 1991. 7. When appropriate, permit writers develop facility specific compliance schedules in accordance with the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on 40 CFR 122.47 Compliance Schedule Requirements. 8. The Total Chromium NC WQS was removed and replaced with trivalent chromium and hexavalent chromium Water Quality Standards. As a cost savings measure, total chromium data results may be used as a conservative surrogate in cases where there are no analytical results based on chromium III or VI. In these cases, the projected maximum concentration (95th %) for total chromium will be compared against water quality standards for chromium III and chromium VI. 9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are inserted into all permits with facilities monitoring for hardness -dependent metals to ensure the accuracy of the permit limits and to build a more robust hardness dataset. 10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included: Parameter Value Comments (Data Source) Average Effluent Hardness (mg/L) 39.74 Data from five samplings by (Total as, CaCO3) Permittee per Division request Average Upstream Hardness (mg/L) Default value as sampled upstream (Total as, CaCO3) 25.00 data were below the minimum (range: 16-17 mg/L). Likely calculated by USGSfor 7Q 10 summer (cfs) 41.60 outfall relocation to Catheys Creek in 1998. IQ 10 (cfs) 16.51 Calculated in RPA spreadsheet Permitted Flow (MGD) 3.0 Facility design flow Date: October 18, 2019 Permit Writer: Gary Perlmutter Page 4 of 4 i Post Office Box 1056 • Granite Falls, North Carolina 28630 Phone (828) 396-4444 • Email: tonygmgg@watertechlabs.com SEPTEMBER 30.2019 TOWN OF SPINDALE WWTP SUMMARY: HARDNESS ANALYSIS STUDY RESULTS: TOTAL HARDNESS IN rng/L EFF 9/17/19 35.0 UP 9/17/19 16.0 39.0 EFF 9/18/19 UP 9/18/19 16.0 38.0 EFF 9/19/19 UP 9/19/19 15.0 EFF 9/20/19 39.0 UP 9/20/19 17.0 EFF 9/23/19 39.0 UP 9/23/19 16.0 ANALYZED AND REPORTED BY, i TONY GRAGG , } T*, id t.iA� kz I Post Office Box 1056 Granite.Falls, North Caroling 28630 Phone (828) 396-4444 EMAIL: tonygragg@watertechlabs.com OCTOBER 17, 2010 TOWN OF SPINDALE WWTP SUMMARY; HARDINESS ANALYSIS STUDY ALL SAMPLES COLLECTED UPSTREAM 10/0712010 17.0 MG/L 10/08/2019 16.0 MG/L 10109/2019 16.0. MG/L 10/10?2019 16.0 MG/L 10/1112019 16.0 MG/L ANALYSIS BEGIN: 10/11/2D191400 ANALYSIS END: 10111/20191500 ANALYZED AND REPORTED BY, TONY GRAGG 1D 1,0 r- 00 rn M c-I ri r-I i 1 ri O O O O O ` N N N N NCLOO O O O � OOU OOA 000 bo R cu � Q o Q c c c c II J Q Q Q Q LJJ CIO ct Cko OD OD 0) cr m cr i Ln w O N O N Al ri ri ri ri z E O Q O z 00 J O Q O O W c; M J L LI m \ II II N w coV ��./O LL 0J } 1Y E D >` V � � a O) O lD ri tD p M N (Tl N 00 LA to > Oi NO LM r i r�-1 r�-1 r�-1 eV -I rNi CUD c LO CO O N N U z w 1.0 r-1 t D M N 0) N 00 In Ln \ J O� N Ln rNi er-1 ri ri rri rN-1 a to c a p LQ II O L V cyf OJ f0 II JN w E v -0 c a-O O Ln W ri N.. E M tm o as +_+ �+ a 00 N 00 LO 1, 1n � L O Lni1 N Ln M11 ri rNI LO O\l rN-I M 0\1 M ri ++ \ 01 O H Ln d q - 00 kD _ kD C 0�en �o t 2 k � 2 ~ " o o / co � S 2 Z cdGn E E ® % 2 © E b b / / ) EL L 2 * « / Cf PO Box 186. 125 Reveley Street . Spindale, NC 28160 Phone: (828) 286-3466 • Fax: (828) 286-3305 November 26, 2019 NCDEQ/DWR RECEIVED NPDES Permitting Branch 1617 Mail Service Center DEC U 2 2019 Raleigh, NC 27699-1617 NCDEQ/DWRINPDES Re: Town of Spindale NPDES No. NCO020664 Preliminary comments and request for time extension To whom it may concern: The Town of Spindale is in receipt of the draft NPDES permit which was issued on October 28 and received on October 29, 2019. According to the transmittal letter, our comments on the draft permit are due within 30 days of receipt of the draft permit. However, the Fact Sheet states that State regulations provide that the comment period ends 30 days from publication in the local newspaper. As of the date of this letter, the Town of Spindale nor our consultants are aware of the publication of the public notice. Therefore, we are not aware of the actual comment deadline, but it appears to be later than the November 29 date indicated in the transmittal letter. This letter provides preliminary comments and a request for additional time to provide formal comments along with additional relevant data should that deadline occur within the next 3 weeks. The draft permit proposes to impose stringent new effluent limits for copper and silver. Unfortunately, the Fact Sheet did not accompany the draft permit as required by 40 CFR sections 124.8(a) and 124.56 (applicable to state programs under 123.25 (a) 27 and 32). As a result, we were unable to begin to review the basis for the new limits until that document was supplied at our request on November 21, 2019. On review of the Fact Sheet, it appears that the limits calculations for copper and silver may have been based in part on faulty or incomplete data. On review of the data submitted for the last four years, our consultants have advised us that our effluent sampling was not done using EPA method 1669 ("clean sampling techniques"), which may have resulted in inaccurate effluent concentrations reported to the Department. In regard to the copper limit, copper is a common contaminant of environmental samples. Using "clean sampling techniques" would likely provide a more accurate (and lower) measure of the effluent copper concentration. The silver data used were mostly "non -detect" at 2.5 µg/L, with a single value of 3 µg/L reported. Based on comments from our consultants, additional testing for silver using "clean sampling" and with minimum detection limits as close as possible (consistent with proper laboratory protocols) to the proposed 0.3 µg/L limit needs to be performed. The Town is currently obtaining additional effluent samples for copper and silver using "clean sampling techniques." The lab will be requested to perform the analyses using the most sensitive methods available for wastewater, which we believe will produce more reliable effluent data for these constituents to be used in the RPA. Because obtaining these data will require some time, we respectfully request that the department not proceed to issue a final permit until the Town can collect and present the additional data and the department has had a chance to consider these new data and revisit the RPA. The Town will provide the additional sampling data along with our "formal" comments within the regulatory comment period if possible, and in any case within the next 3 weeks, i.e., by December 17, 2019. If the 30-day regulatory comment period ends prior to that date, we request that the Department agree to accept and review the data and our comments anyway. The Town has identified other issues with the draft permit that will be addressed in more detail in our "formal" comment letter, which we will submit along with the additional copper and silver data discussed above. These issues include: • The RPA methodology used by DEQ appears to compare the calculated monthly average WQBEL with the single highest daily effluent result times a multiplier of approximately 1.3. A more valid comparison would compare the monthly average WQBEL with the highest expected monthly average effluent concentration using monthly average discharge data. • The permit proposes to impose stringent new effluent limits immediately upon issuance. This deprives the Town of the ability to develop relevant monthly average data to be used in the calculation of Reasonable Potential and also deprives the Town of the opportunity to identify possible sources of the pollutants and take effective action (if needed) to reduce them at the source. In light of the above concerns, in our formal comments we will be requesting a schedule in the final issued permit to provide a "grace period" of at least 6 months where the copper and silver effluent limits are not in effect. During that time the Town will: (1) generate valid monthly average Cu and Ag data of at least 4 samples a month (always using clean techniques, of course), and (2) investigate possible sources of these pollutants, including both SIUs and possible commercial sources. An additional preliminary comment is with regard to the proposed moving of the upstream sample point. The draft permit moves the sample point to the confluence of Cathey's Creek and Hollands Creek under the NCSR 1510 (Hudlow Rd) bridge. This location is not accessible, except from the bridge itself. This is a heavily used bridge with a narrow shoulder, which presents a safety hazard to the staff. Additionally, sampling under bridges is an unacceptable method as it has a high probability of introducing contaminants from the bridge itself into the samples. I have included photographs taken from the proposed sample point to illustrate this. In our final "official" comments we will propose a sampling point that is safe and which allows for obtaining valid stream quality data. Thank you for the opportunity to provide relevant and important information for your use in drafting a final NPDES permit. We look forward to hearing that you will allow us to submit data and other comments on or before December 17. Very Truly Yours, Scott Webber Manager Cc: Kurt Wright, P.E. Maurice Walsh, P.E. Randall G. Hurst, P.E. View from Hudlow Bridge of the streams convergence Perlmutter, Gary From: Perlmutter, Gary Sent: Thursday, December 19, 2019 4:53 PM To: gswebber@spindalenc.net Subject: Spindale draft permit comment response Attachments: 20664 public notice affidavit.pdf Dear Mr. Webber The Division has received your comments to the draft permit for the Spindale WWTP (NC0020664), public noticed on November 2, 2019. To clarify the comment deadline, the public comment period is 30 days from public notice date. Attached is a copy of the public notice affidavit [pdf to be attached]. The Division will allow until December 17, 2019, as the Town has proposed, to receive additional effluent Total Copper and Total Silver sample results for consideration in the Reasonable Potential Analysis (RPA). Please note that in accordance with 15A NCAC 213 .0505 (e)(4), "All test procedures must produce detection and reporting levels that are below the permit discharge requirements and all data generated must be reported to the approved detection level or lower reporting level of the procedure. If no approved methods are determined capable of achieving detection and reporting levels below permit discharge requirements, then the approved method with the lowest detection and reporting level must be used." The RPA methodology used by DEQ is in accordance with federal and state regulations. Please review USEPA NPDES Permit Writers' Manual (available online: https:llww pa.govZnpdes/npdes-permit-writers-manual) and the USEPA Technical Support Document For Water Quality -based Toxics Control (available online: htt s: www3.epa.,g.,vi,ipucai puuaZowm0264.pdf) for more information. The Town was asked if they need a compliance schedule to meet the new Copper and Silver limits, but no request was received. However, if the Town would like a compliance schedule to meet the new limits, please include a request with your sampling results. Lastly, the Division understands the safety concerns with the proposed relocation of the upstream monitoring site. Please propose an alternate location that is safely accessible and representative of the receiving stream. I look forward to your response and additional sampling results. If you have any questions, please contact me via e-mail or at 919-707-3611. Sincerely, Gary Perlmutter, Environmental Specialist II NC Division of Water Resources NPDES Complex Permitting Unit 919-707-3611 512 North Salisbury Street Raleigh, NC 27604 PO Box 186. 125 Reveley Street • Spindale, NC 28160 Phone: (828) 286-3466 . Fax: (828) 286-3305 January 9, 2020 NCDEQ/DWR NPDES Permitting Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Attn: Gary Perlmutter Re: Town of Spindale NPDES No. NCO020664 Comments and request for time extension Dear Mr. Perlmutter, The Town of Spindale is in receipt of your email dated December 19, 2019 in response to our comment letter dated November 26, 2019. Thank you for providing the public notice affidavit and for your comments and clarifications. I am attaching metal testing that has been conducted on the influent and effluent of the plant. As can be seen, the silver was non -detect and the copper was 28.6 µg/L. I wanted to point out that the test limits for silver were 0.5 µg1L, which is above the proposed effluent limit of 0.3 µg/L. This is the lowest detection level that the Town of Spindale has access to. Based on the regulation you specified in your email, 15A NCAC 2B .0505, we would presume that a non -detect for silver in this case would be considered in compliance with the proposed permit limits. We are in the process of taking additional samples to gauge the pollutant concentration levels. The results of these test will provide monthly average discharge data that the NC DEQ can use to update the RPA. The test procedures currently being used have minimum detection limits that align with the proposed silver and copper limits in question. This testing will also determine if compliance is possible and to identify the sources of pollutants to allow us to take actions to reduce the pollutant concentration levels if necessary. The Town is requesting a six month period to perform the additional influent and effluent testing. We will provide the test results to NC DEQ for the purpose of updating the RPA and reassessing the potential for contamination. We have identified potential sources of the pollutants in our sewer shed and are in the process of testing samples taken from the respective SIU's and or commercial users. We are performing a mass balance analysis with the results to determine the primary sources of the containments. One of the SIU's that we have identified as a potential principal source of the pollutants has shared with us that its silver and copper discharge change with the staffing and manufacturing processes and that these fluctuate during the year, especially in the four quarter. Namely, the current SIU sampling is expected to yield lower concentration levels due to a reduction in production at this time of year. We are requesting an additional six month time period following the six month intensive data collection period and re-evaluation of the RPA to investigate methods of pollutant reduction if the study finds that to be necessary. In light of the above findings, we would like to request that a one year "grace period" before the copper and silver effluent limits are put into effect to complete the two tasks discussed above. During that time the Town will: (1) generate valid monthly average Cu and Ag data of at least 4 samples a month (always using clean techniques, of course), (2) investigate possible sources of these pollutants, including both SIUs and possible commercial sources, and (3) investigate methods of pollutant reduction if necessary. We would also ask that the permit allow that the copper and silver limits could revert to "monitor only" if the sampling and updated RPA demonstrate that they are not necessary. In response to your comments on the proposed sampling point, I am attaching a pdf taken from Google Earth showing the current and proposed sampling points. From this aerial view, as well as from discussions with the town staff, the current sampling point is the closest to the actual discharge point with safe access. We would request that the new permit would allow the current discharge point to remain as the designated NPDES upstream sample location. I realize that this is upstream of the convergence of Hollands Creek and Cathey's Creek. Unfortunately the effluent line coming from the WWTP parallels Hollands Creek and discharges at the convergence of the two creeks. This and the issues related to the sampling from the bridge, as mentioned in the previous letter, make a pristine sample point unavailable. To summarize our request in conclusion, we are requesting a one year delay in the implementation of the proposed silver and copper limits. During this time, the town will engage in 4 tests a month for the first six months to determine influent and effluent pollutant concentrations. These tests will be conducted using sampling and testing procedures with minimum detection limits that correspond to the proposed NPDES limits. This data can be used by NCDEQ to reassess the RPA and to reassess the proposed NPDES limits. If the reassessed RPA validates the proposed silver and copper limits, we are requesting an additional six month period to investigate methods of pollutant reduction. Very Truly Yours, J c Scott Webber Town Manager (� acMnalyUa e tuwaincelabs c m Mr. Tony Gragg Water Tech labs PO Box 1056 Granite Falls, NC 28630 Project: TOWN OF SPINDALE Pace Project No.: 92456M Sample: SPINDALE INFLUENT Method Parameters - - - EPA 200.8 Arsenic . EPA200.8 Cadmium . EPA200.8 Chromium' EPA200.8 Copper :. EPA200.8 Lead EPA20D.8 Molybdenum EPA200.8 Nickel EPA200.8 Selenium EPA200.8 Silver EPA200.8 Zinc EPA 245.1 Rev 3.01994 Mercury Sample:.SPINDALE EFFLUENT Method Parameters EPA200.8 Arsenic EPA 200.8 Cadmium EPA200.8 Chrornlum . EPA200.8 Copper EPA200.8 Lead EPA200.8 Molybdenum EPA200.8 Nickel EPA200.8 Selenium EPA200.8 Silver EPA200.8 Zinc Reviewed by. Chris Derouen for Lorri Patton 1(828)254-7176 lord.patbon@pacelabs,com Pace Analytical3eMces Minneapolis A21A Certification #: 2926.01 Alabama Certification #: 40770 Alaska Contaminated Sites Certification # 174009 Alaska DW Certification #: MN00064 Arizona Certification #: AZ0014 Arkansas DW Certification #: MN00064 Arkansas WW Certification #: 88-0680 Callfomia Certification #: 2929 CNMI Saipan Certification #: MP0003 Colorado Certification A MN00064 Laboratory Report Pace Analytical Services, LLC 6701 Conference Drive Raleigh, NC 27607 (919)934-4984 Page 1 of 2 Report Date: 12/18/2019 Date Received: 12/06/2019 Lab ID: 92456380001 Collected: 12/03/19 09:00 Matrix: Water Results Units Report Limit Analyzed ND ug/L 0.50 12/1711915:30 0.21 ug/L 0.080 121111191&30 35.2 uglL 0.50 1211711916:30 33.5 uglL 1.0 12/1711916:30 2.8 ugll- 0.10 12/17/1915:30 5.3 ugll- 0.60 12/1711915:30 5.9 ug/L 0.50 1211711915:30 ND ug/L 0.60 12/17/1915:30 ND ug/L 0.50 12117/1915:30 189 ug/L 5.0 12117/1915:30 ND ug/L 0.20 12112/1912:28 Lab ID: 92455380002 Collected: 12103119 09:07 Matfix: Water Results Units Report Limit Analyzed ND uglL 0.50 12/13119 01:32 ND ug1L 0.080 12113/19 01:32 11 A ugf L 0.50 12113/19 01:32 28.0 ug/L 1.0 12/13/19 01:32 0.43 ug/L 0.10 12113/19 01:32 .1.1 ug/L 0.50 12113/19 01:32 2.2 ug/L 0.60 12113/19 01:32 ND ug/L 0.50 12113/1901:32 N❑ ug/L 0.60 12113/19 01:32 92.8 ugli- 25.0 12113/19 20:14 Connecticut certification #: PH-0256 EPA Region 8+Wyoming DW Certification P. via MN 027- 053-137 Florida Certification #: E87605 Georgia Certification M. 959 Guam EPA Certification #: MN00064 Hawaii Certification #: MN00D04 Idaho Certification #: MN00064 Illinois Certification #: 200011 Indiana Certification #: C-MN-01 Qualifiers Qualifiers Page 1 of 5 -< Z 0 CL a� CL r C C:) co O _ U) a C � a m Q. CL E co c� Q } ar r J 4 r .. J i1►, �r . A• �• PO Box 186. 125 Reveley Street . Spindale, NC 28160 Plione: (828) 286-3466 • Fax: (828) 286-3305 February 17, 2020 NCDEQ/DWR NPDES Permitting Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Attn: Gary Perlmutter Re: Town of Spindale NPDES No. NCO020664 Comments and Clarifications Dear Mr. Perlmutter, The Town of Spindale is in receipt of the draft NPDES permit, dated January 29, 2020. We have reviewed the draft permit and want to make some additional comments and also request clarifications on a number of items in the permit. • In section A1, the BOD parameter includes the dates (Apr 1 —.Oct 31)'. The superscript references footnote 3 on the following page and indicates 85% BOD removal. Does the BOD limit only apply between those dates or does the 85% removal only apply between those dates? Please confirm the intent of the dates in the BOD parameter. • The first page of the permit indicate an effective date in the 2019 year, we are assuming the effective date will be in the 2020 year. Please confirm. • Section A3 indicates the pollutant scan should "determine whether parameters are present in concentrations greater than applicable standards and criteria". Please provide a reference to the applicable standards and criteria? • The proposed monthly average silver limit is 0.3µg/L. The minimum reporting limit for the testing procedure available is 0.5µg/L. Please confirm that a non -detect or "< 0.5µg/L" will meet the proposed limit. • In section A3, the effluent pollutant scan can be submitted electronically or mailed, can the second species toxicity test also be submitted to the Aquatic Toxicology Branch electronically? • In section A6, it states that the monitoring reports should be submitted through eDMR and printed and mailed to DWR. Currently the monitoring reports are submitted through eDMR and submitted via email to DWR. We would ask that section 6 be modified to allow for the transmission of the monitoring reports through eDMR and mail or email. • In Section A4, the schedule of compliance includes completing an action plan within one year of the permit, taking action within 2 years of the permit, and being compliant within 3 years of the permit. Further, the approved action plan would become an enforceable part of the permit. At the same time, draft permit allows for the Permittee to apply for a permit modification based on an RPA with at least 24 data points of copper and silver concentrations. We would propose that the action plan would be due 2 years following the permit, with the actions taken in year 3, and compliance in year 4. This would allow for 24 monthly samples to be acquired and submitted as part of the action plan. The additional testing might necessitate a change in the action plan based on the results of the reasonable potential analysis. Very Truly Yours, / Scott Webber City Manager 3rd Draft Fact Sheet Addendum The Permittee provided comments for the Spindale WWTP (NC0020664) 2"d draft permit, public noticed on January 29, 2020. Comments by Scott Webber, Town of Spindale (Permittee) with DWR responses are as follows: Comment: "In section Al, the BOD parameter includes the dates (Apr 1— Oct 31)3. The superscript references footnote 3 on the following page and indicates 85% BOD removal. Does the BOD limit only apply between those dates or does the 85% removal only apply between those dates? Please confirm the intent of the dates in the BOD parameter." Response: The dates were removed as they were inserted in error. The revised draft permit does not have dates associated with the BOD limits, indicating that these are year-round limits subject to the 85% removal requirement. Comment: "The first page of the permit indicate an effective date in the 2019 year, we are assuming the effective date will be in the 2020 year. Please confirm." Response: The effective date will be in 2020. Comment: "Section A3 indicates the pollutant scan should 'determine whether parameters are present in concentrations greater than applicable standards and criteria'. Please provide a reference to applicable standards and criteria?" Response: Applicable standards and criteria include those in 15A NCAC 026 .0211— Fresh Surface Water Quality Standards for Class C Waters. A link to the NC water quality standards table (https://deg.nc.p,ovZdocuments/nc-stdstable-06102019) was sent to the Permittee and ORC via e-mail on March 19, 2020. Comment: "The proposed monthly average silver limit is 0.3 µg/L. The minimum reporting limit of the testing procedure available is 0.5 µg/L. Please confirm that a non -detect or'< 0.5 µg/L' will meet the proposed limit. Response: Non -detect results of the lower reporting limit of the procedure will indicate compliance for a limit that is below detection. This was communicated to the Permittee and ORC via teleconference on March 16, 2020. Comment: "in section A3, the effluent pollutant scan can be submitted electronically or mailed, can the second species toxicity test also be submitted to the Aquatic Toxicity Branch electronically?" Response: 2"d sp. toxicity reports can be submitted electronically to ATForms.AT6@ncdenr.pov. The PPA Special Condition was modified to allow for 2"d sp. toxicity tests to be electronically submitted. Section A.3 was modified to include electronic submittal. Comment: "In section A6, it states that the monitoring reports should be submitted through eDMR and printed and mailed to DWR. Currently the monitoring reports are submitted through eDMR and submitted via email to DWR. We would ask that section 6 be modified to allow for the transmission of the monitoring reports through eDMR and mail or email." Response: Section A6 follows the Electronic Reporting Rule adopted by the Division in 2016. Therefore, the section cannot be modified. This was communicated to the Permittee and ORC via teleconference on March 16, 2020. Page 1 of 2 3Id Draft Fact Sheet Addendum Comment: "In Section A4, the schedule of compliance includes completing an action plan within one year of the permit, taking action within 2 years of the permit, and being compliant within 3 years of the permit. Further, the approved action plan would become an enforceable part of the permit. At the same time, draft permit allows for the Permittee to apply for a permit modification based on an RPA with at least 24 data points of copper and silver concentrations. We would propose that the action plan would be due 2 years following the permit, with the actions taken in year 3, and compliance in year 4. This would allow for 24 monthly samples to be acquired and submitted as part of the action plan. The additional testing might necessitate a change in the action plan based on the results of the reasonable potential analysis." Response: The compliance schedule has been modified to be extended to four years, with the first two years requiring the Permittee to submit a summary of actions taken to reduce Copper and Silver concentrations toward permit limits; the third year requiring the Permittee submit a Corrective Action Plan; and limits becoming effective by the fourth year. The paragraph that refers to applying for a permit modification to reassess reasonable potential of Copper and Silver to exceed water quality standards was removed from the permit. These changes were discussed and agreed -upon with the Permittee, ORC and consultant via a webmeeting on March 19, 2020. Please note, the Permittee can submit sampling data for review and a permit modification at anytime. At least 24 samples should be submitted for a rerun of a reasonable potential anaylsis. Sampling does not constitute actions towards compliance with permit limitations; however, actions such as submitting a revised Headworks Analysis (based on the new limitations), reissuance of SIU permits that implement the new limits, and collection system sampling to assess and identify sources of silver and copper are all acceptable. Page 2 of 2