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HomeMy WebLinkAboutNC0000272_Draft Permit Comments_20220401SOUTHERN ENVIRONMENTAL LAW CENTER Telephone 828-258-2023 48 PATTON AVENUE, SUITE 304 Facsimile 828-258-2024 ASHEVILLE, NC 28801-3321 April 30, 2021 Via Electronic Mail and First -Class U.S. Mail Sergei Chernikov, Ph.D. Environmental Engineer III North Carolina Department of Environmental Quality Division of Water Resources Industrial NPDES Permitting Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Email: sergei.chernikov@ncdenr.gov Re: Draft NPDES Permit NC0000272 Renewal Dear Dr. Chernikov, Please accept these comments from the Southern Environmental Law Center on behalf of MountainTrue, the French Broad Riverkeeper, the Tennessee Chapter of the Sierra Club, and the Center for Biological Diversity regarding the draft National Pollutant Discharge Elimination System ("NPDES") permit renewal for Blue Ridge Paper Products, LLC d.b.a. Evergreen Packaging ("Blue Ridge Paper") proposed on November 10, 2020 ("the Draft Permit"). Our organizations are concerned that the Draft Permit provides insufficient protections for the Pigeon River, in contravention of the Clean Water Act, the Code of Federal Regulations, and North Carolina state law. The Draft Permit must be withdrawn, revised, and reissued for public comment. Specifically, the North Carolina Department of Environmental Quality ("DEQ") must make the following changes, in addition to others identified below: • Require daily maximum temperature thresholds. • Acknowledge that Blue Ridge Paper's own 2014 study shows it cannot assure the protection of a balanced, indigenous population below the discharge and require Blue Ridge Paper to implement technology controls to comply with North Carolina's water quality standards for temperature. • Reinstate the requirement to conduct fish -tissue dioxin testing at least three times per five-year permit period. • Interpret North Carolina's narrative standard for "colored and other wastes" in a manner that protects all aspects of "aesthetic quality," not just shifts in true color. • Evaluate currently available technologies to reduce color discharge. Charlottesville • Chapel Hill • Atlanta • Asheville • Birmingham • Charleston • Nashville • Richmond • Washington, DC 100% recycled paper • Develop technology -based limits for discharged pollutants not covered by EPA's outdated industry effluent limitation guidelines. • Require complete disclosure of the mill's prior, current, and future use of forever chemicals in its processes, and the potential for ongoing discharge into the Pigeon River. • Account for leachate leaking from the mill's old landfills into the Pigeon River while setting permit pollution limits • Require Blue Ridge Paper to submit a current and complete application that discloses all pollutants currently discharged, not those discharged and subject to disclosure seven years ago under a lower permitted flow. I. Factual Background The Pigeon River flows over 100 miles from its headwaters in the Middle Prong Wilderness to its confluence with the French Broad River. Historically, this entire stretch of water was a free -flowing, clear, cold -water river1 home to over ninety-five native fish species.2 That changed in 1908 when the Canton paper mill began dumping toxic effluent —including dioxins, furans, and chloroform —directly into the river. In the mill's early years of operation, as much as 95% of the Pigeon's flow was diverted for industrial processes and expelled as effluent.3 By 1964, the Pigeon was so polluted that a thirty -two -kilometer segment of the river below the mill had no fish at all.4 However, over the past few decades a combination of factors have improved water quality on the Pigeon River, including progressively more stringent permit limits imposed under the Clean Water Act's NPDES program, regulatory enforcement actions, and the mill's modernization efforts. Below the mill, the Pigeon River is classified as a Class C waterbody, which means its waters must be "suitable" for "aquatic life propagation, survival, and maintenance of biological integrity (including fishing and fish); wildlife; secondary contact recreation ... [and] agriculture." 15A N.C. Admin. Code 2B .0211(1)—(2). Secondary recreation includes fishing and paddling. Class C waters must also meet specific numeric criteria, like temperature limits specific to mountain streams, and narrative limits, including preventing colored and other wastes from degrading the river's aesthetic qualities. For several decades, the reach below the mill has failed to meet the Class C criteria for benthic aquatic life, triggering its listing as impaired under Section 303(d) of the Clean Water Act.5 This impaired area has recently expanded, according to the latest draft § 303(d) list issued by DEQ.6 Above the mill, the Pigeon River is designated as ' Richard A. Bartlett, Troubled Waters: Champion International and the Pigeon River Controversy (1995). 2 D.A. Etnier & W.C. Starnes, The Fishes of Tennessee, University of Tennessee (1993). 3 J. Larry Wilson, Charles C. Coutant, & John Tyner, Canton Mill Balanced and Indigenous Species Study for the Pigeon River (Clean Water Act Section 316(a) Demonstration) at 32 (2014) [hereinafter `BIP"]. 4 J.B. Messer, Survey and Classification of the Pigeon River and Tributaries, North Carolina, North Carolina Wildlife Resources Commission (1964). S See, e.g., N.C. Dep't of Envtl. Quality, Div. of Water Res., 2018 NC Category S Assessments "303(d) List" Final, https://files.nc.gov/ncdeq/Water%20Quality/Planning/TMDL/303 d/2018/2018-NC-303-d--List-Final.pdf. 6 See N.C. Dep't of Envtl. Quality, Div. of Water Res., Integrated Report Files, https://deq nc.gov/about/divisions/ water -resource s/planning/modeling-assessment/water-quality-data-assessment/integrated-report-files. 2 WS-III and Trout Waters. These more protective designations ensure that the waters above the mill safeguard water -supply resources and sustain conditions for trout propagation and survival on a year-round basis. Both designations end at the Canton water supply intake just before Blue Ridge Paper's mill. No § 303(d) impairments exist above the mill. Although the mill has discharged pollution into the Pigeon for more than a century, the mill received its first permit authorizing polluted discharges under the Clean Water Act in 1973. In 1985, North Carolina began administering the permitting program under authority delegated from EPA, and issued its first NPDES permit for the mill. This permit included a Clean Water Act § 316(a) thermal variance allowing the mill to exceed North Carolina's thermal standards so long as the mill maintained: (1) a monthly average in -stream temperature maximum of 32 °C in the summer and 29 °C in the winter, and (2) a monthly average maximum temperature rise above the ambient temperature of upstream waters of 13.9 °C. For perspective, 32 °C is about 90 °F, around the maximum temperature of the Persian Gulf in mid-summer;8 and 29 °C is approximately 85 °F, around the temperature of the ocean off of Miami Beach in August.9 These temperature limits remained unchanged until 2010, when North Carolina reduced the maximum monthly average temperature difference between upstream and downstream waters from 13.9 °C to 8.5 °C. That same year, a coalition of conservation groups and the government of Cocke County, Tennessee, challenged North Carolina's reissuance of the mill's NPDES permit, arguing the permit violated thermal -pollution limitations and improperly relied on an illegal color variance. On April 24, 2012, the Division of Water Quality ("DWQ") and the N.C. Environmental Management Commission ("EMC") entered into a partial settlement agreement with the petitioners,10 who agreed to dismiss their temperature -related claims provided that, among other things: • DWQ modified the permit —subject to EPA approval —to add a weekly average in - stream temperature maximum of 32 °C from July to September and 29 °C from October through June. • Blue Ridge Paper prepared an updated Balanced Indigenous Population study ("BIP" or "BIP study") that (1) complied with Section 316(a) of the Clean Water Act; (2) surveyed mussels and shellfish in the mainstem of the Pigeon; (3) included "detailed studies of macro -invertebrates and shellfish"; (4) conducted thermal sampling "at 20 locations in 7 North Carolina's water quality standards specify a maximum temperature of 29 °C for mountain and upper piedmont waters and 32 °C for lower piedmont and coastal plain waters, and forbid heated discharges from increasing the ambient temperature of the receiving waters above 2.8 °C. 15A N.C. Admin. Code 02B .0211(18). 8 Persian Gulf, Encyclopedia Britannica (2021), https://www.britannica.com/place/Persian-Gulf. 9 Liz Osborn, Average Ocean Water Temperatures at Miami Beach, Current Results, https://www.currentresults. com/Oceans/Temperature/miami-beach-average-water-temperature.php (last visited Apr. 19, 2021). 1° Partial Settlement Agreement and Joint Stipulation to Stay, N.C. O.A.H No. 10 E.H.R. 4341 (Apr. 24, 2012) [hereinafter "Partial Settlement Agreement"] (Attachment A). 3 the Pigeon River and 2 locations in a reference river"; and (5) "intensively" surveyed for fish, macroinvertebrates, shellfish, and periphyton using certain sampling protocols. On June 1, 2012, DWQ issued a permit modification incorporating the weekly average standard.11 Several months later, consultants hired by Blue Ridge Paper began sampling for the updated BIP study. Above the mill, the BIP study found a cold -water fish community; pollution - intolerant macroinvertebrates; habitat -forming hornleaf riverweed; and native salamanders, crayfish, and rare mussels. Below the mill, the study found a "warm -water fish community"; pollution -tolerant macroinvertebrates; invasive Asiatic clams; and a total lack of salamanders, native crayfish, and hornleaf riverweed. Despite these severe impairments, the BIP study concluded that the community below the mill was "`balanced' and similar to what would have been there without the thermal discharge."12 In 2014—the last year of the 2010 permit's coverage —petitioners also settled their color - related claims with DWQ and EMC.13 Pursuant to the final agreement, Blue Ridge Paper agreed to file a timely permit -renewal application, where the challenged discharge limits would be reconsidered. DWQ and EMC further agreed to "take all reasonable steps to issue an NPDES Permit within 24 months of receipt of a complete permit renewal application."14 A few months later, Blue Ridge Paper applied for renewal of the permit.15 Yet instead of timely processing the permit renewal, DWQ administratively extended the 2010 permit for another five years. When DEQ16 finally revisited the permit in 2020, it inexplicably weakened discharge limits Like its predecessors, the current Draft Permit would authorize discharge of the mill's polluted wastewater, including industrial, stormwater, municipal, and landfill leachate, into the Pigeon River. Material changes to the 2010 permit terms include: (1) increasing the flow limit from 29.9 million gallons per day ("MGD") to 34 MGD; (2) removing the color variance while requiring no further reductions in colored -waste discharges; (3) reducing the frequency of fish - tissue sampling for dioxin; (4) allowing a mixing zone; and (5) recalculating chloroform limits. The Draft Permit also recommends reverting to the temperature variance limits set for the original 2010 permit: seasonal monthly average maximums of 32 and 29 °C and a monthly average maximum temperature differential of 8.5 °C. No weekly average or daily maximums are proposed. 11 Letter from Charles Wakild, Engineer, N.C. Dep't of Env't and Nat. Res., to Paul Dickens, Manager, EFTS, Blue Ridge Paper Products Inc. (June 1, 2012) (Attachment C). 12 BIP at 10. 13 Settlement Agreement, N.C. O.A.H No. 10 E.H.R. 4982 (Sept. 5, 2014). 14 Id. 15 Blue Ridge Paper Products Inc. dba Evergreen Packaging, Application for Permit Renewal NPDES Permit NC 0000272 (Dec. 30, 2014) [hereinafter "Permit Application"]. 16 In 2015, the North Carolina Department of Environment and Natural Resources was renamed the North Carolina Department of Environmental Quality, and the Division of Water Quality was renamed the Division of Water Resources. 4 In making the recommendation to revert to the pre -settlement temperature variance terms, Division of Water Resources ("DWR") staff evaluated Blue Ridge Paper's 2014 BIP study and erroneously concluded that temperature was not prohibiting a balanced and indigenous population. In addition, DWR reviewed existing temperature data and concluded that Blue Ridge Paper still cannot meet North Carolina's water -temperature standards. Therefore, DWR is recommending continuation of the variance that allows Blue Ridge Paper to discharge heated water and exceed water quality standards for temperature in the Pigeon River below the mill.'? II. The Permit Must Include Stronger Limits on Discharges into the Pigeon River. The Clean Water Act requires various pollution -control measures "to restore" the "chemical, physical, and biological integrity" of the Pigeon River. 33 U.S.C. § 1251(a). These measures —including North Carolina's NPDES permits —have been enormously important to the progressive recovery of the Pigeon downstream of the mill. However, that recovery and restoration is incomplete. DEQ's Draft Permit fails to make the meaningful progress required, and even allows backsliding on critical permit terms. DEQ must revise its Draft Permit to honor its obligations under state and federal law to fully restore and protect the Pigeon. A. The Draft Permit fails to set daily temperature thresholds as required by law. Under North Carolina and federal law, all permit limits for continuous discharges shall, "unless impracticable," be stated as both daily maximum and average monthly discharge limitations. 40 C.F.R. § 122.45(d) (excepting publicly owned treatment works); 15A N.C. Admin. Code § 2H .0143(26) (incorporating this federal regulation by reference).18 The maximum daily discharge limit for pollutants like temperature is the "average" measurement over the course of one day. 40 C.F.R. § 122.2; 15A N.C. Admin. Code 2H .0143(1) (incorporating this definition). Blue Ridge Paper is a continuous discharger. But the Draft Permit only includes "monthly average instream temperature" discharge limitations.19 Neither the Draft Permit nor the Draft Fact Sheet mention any consideration of daily limits, much less explain why setting daily limits would be "impracticable." Therefore, the Draft Permit is arbitrary, capricious, and contrary to federal and state law. Cf. In re City of Ames, 6 E.A.D. 374, 389 (1996) (holding that the EPA could disregard the mandates of 40 C.F.R. § 122.45(d) "only if [the specified] average limits are impracticable"); In re City & County of San Francisco, 4 E.A.D. 559, 579 (1993) ("Unless it is impracticable to establish average [daily] or monthly [discharge] limitations ... the regulations require average [daily] and monthly [discharge] limitations."). 17 Draft Fact Sheet at 10. 18 North Carolina's delegated NPDES program must "at all times be conducted in accordance with the requirements" of the Clean Water Act and EPA's implementing regulations. 40 C.F.R § 123.1(f); 15A N.C. Admin. Code 2H .0118 ("Any state NPDES permit will contain effluent limitations and standards required by ... the Clean Water Act which is hereby incorporated by reference including any subsequent amendments and editions."). 19 See Draft Permit at 4 n.11 (emphasis added). 5 Worse still, DEQ is also silent on its decision to retreat from the weekly average limits for temperature added to the permit in 2012, in accordance with the partial settlement agreement. Certainly, DEQ is obligated to impose a daily average temperature limit —for both maximum seasonal temperatures and the maximum temperature differentia120—as discussed above. But even if that were not the case, DEQ cannot backslide on the terms of its temperature variance by reverting from a weekly to a less stringent monthly standard. 33 U.S.C. 1342(o); 40 C.F.R. § 122.44(1); 15A N.C. Admin. Code 02B .0408(25) (incorporating 122.44 by reference). To comply with the law, the Draft Permit must be revised and reissued with daily and monthly maximum temperature limitations. In addition, the fact sheet must acknowledge that the starting point for DEQ's variance analysis is the weekly average limits set in accordance with the settlement agreement in 2012. B. Blue Ridge Paper's BIP study is flawed and cannot support a continued thermal variance. Under the Clean Water Act, heated industrial wastewater, also called "thermal effluent," is a pollutant that cannot be discharged to jurisdictional waters without an NPDES permit. 33 U.S.C. § 1342; see also 40 C.F.R. § 122.2 (listing "heat" as a "pollutant"). Ordinarily, such permits must impose effluent limits on heated wastewater sufficient to satisfy state water quality standards for temperature. 33 U.S.C. § 1311(b)(1)(C) (requiring the establishment of "any more stringent limitation" necessary to meet "water quality standards," including state standards for temperature). Clean Water Act § 316(a), however, provides narrow authority for a variance from water quality standards for temperature when such effluent limits are "more stringent than necessary to assure the protection and propagation of a balanced, indigenous population of shellfish, fish, and wildlife." Id. § 1326(a). Under this provision, an industrial discharger seeking a § 316(a) temperature variance bears the burden of demonstrating both: (1) that effluent limits otherwise required by the Clean Water Act are "more stringent than necessary" to protect the balanced, indigenous population; and (2) that the thermal discharge allowed by such a variance will protect the balanced, indigenous population in the future. See 33 U.S.C. § 1326; 40 C.F.R. § 125.73(a) (requiring the applicant to demonstrate that water quality standards are more stringent than necessary). If the applicant fails to make either of these showings they must comply with the thermal water quality standards. In this case, the BIP showed neither. Protection of the balanced, indigenous population may be shown using one of three approaches: a predictive study showing that future thermal discharges allowed by the variance will not appreciably harm21 the balanced, indigenous population; a retrospective study showing 20 The 2012 settlement agreement only required a weekly average limitation for the maximum seasonal temperature limits. See Partial Settlement Agreement, supra note 10 (Attachment A). But federal regulations require daily average limits for all temperature limits, including the maximum temperature differential between upstream and downstream of the mill. 21 EPA's regulations do not define appreciable harm, but Environmental Appeals Board decisions have emphasized factors such as a shift in species composition and the "magnitude of the changes in the community as a whole and in 6 that past thermal discharges have not caused appreciable harm; or, alternatively, a study showing that, despite the fact that thermal discharges have appreciably harmed the balanced, indigenous population in the past, no future harm will occur. 40 C.F.R. §§ 125.70, 125.73(c). Here, Blue Ridge Paper attempted to show an absence of both prior appreciable harm and potential future harm to a balanced, indigenous population in the Pigeon River.22 Regardless of the demonstration method selected, thermal impacts cannot be considered in isolation. 40 C.F.R. § 125.73(a). Instead, the applicant must show that "the cumulative impact of its thermal discharge together with all other significant impacts on the species affected, will assure the protection and propagation of a balanced indigenous [population]." Id. (emphasis added). EPA regulations define a balanced, indigenous population as "a biotic community typically characterized by diversity, the capacity to sustain itself through cyclic seasonal changes, presence of necessary food chain species and by a lack of domination by pollution tolerant species." 40 C.F.R. § 125.71(c). Blue Ridge Paper acknowledges that the "balanced, indigenous population" of fish, shellfish, and wildlife contemplated by the Clean Water Act is the population that would have existed absent the impacts of the applicant's "thermal discharge and other sources of pollution."23 Blue Ridge Paper began sampling for the BIP study used to support the 2020 thermal variance in 2012, following partial settlement of the prior contested case. Researchers assessed physical and biological metrics at multiple sampling stations, including several upstream of the mill, several below, a few on the mainstem of the Pigeon in Tennessee, and at two locations on the lower Swannanoa River.24 Biological sampling targeted fish, mussels and shellfish, macroinvertebrates, periphyton, macrophytes, and other wildlife. All of these biotic categories showed night -and -day differences in health and composition between upstream and downstream populations: • The BIP study acknowledged that the "fish community in the North Carolina reach downstream of the Mill has more characteristics of a warm -water fish community than does the river upstream of the Mi11."25 individual species." In re Pub. Serv. Co. oflnd., 1 E.A.D. 590, *22 (1979). According to the BIP study, appreciable harm is shown if "adverse impacts" are "present." BIP at 48. 22 BIP at 16, 69. 23 Id. at 20. See also 40 C.F.R. § 125.71(c) (stating that a balanced indigenous population excludes "species whose presence or abundance is attributable to the introduction of pollutants that will be eliminated by compliance" with water quality standards); In Re Dominion Energy Brayton Point, 12 E.A.D. 490, 557 (2006) ("[T]he population under consideration is not necessarily just the population currently inhabiting the water body but a population that may have been present but for the appreciable harm."). 24 BIP at 42, 45. BIP researchers decided to include reference sites from outside the Pigeon River watershed in order to comply with EPA guidance suggesting "sampling more reference locations." Id. at 34. The researchers found the lower Swannanoa River is an appropriate comparison because it "has comparable basin morphology and is part of the larger French Broad River basin." Id. at 41; see infra Part II.B.4 (describing why the Swannanoa is not an appropriate comparison). 25 BIP at 57. 7 • No mussels were found at any sampling sites,26 though two rare species —the wavy -rayed lampmussel and the endangered Appalachian elktoe—have been found upstream of the mill.27 Invasive and thermally tolerant Asiatic clams were found at every biological sampling site downstream of the mill, whereas only one was found upstream.28 • Macroinvertebrate sampling scores29—a measure of the benthic community's pollution intolerance —were "Good" immediately above the mill, "Fair" in the five sites immediately below the mill, "Good -Fair" in the next three downstream sites, and then "Good" once more at the North Carolina station farthest downstream from the mill.3° • Periphyton were generally present in ecologically insignificant amounts throughout the river,31 though the study notes the "periphyton community in a small area of the zone of initial mixing [below the mill] is dominated by blue-green algae with associated thermally tolerant chironomid larvae."32 • No macrophytes (hornleaf riverweed) were found in the thermally affected reach, though riverweed was found at three of the four upstream sites and two of the three Tennessee sampling sites downstream.33 • The BIP also referenced two studies that found no salamanders34 or crayfish35 in the thermally affected portion of the mainstem, though both taxa were found upstream and in several tributaries of the Pigeon.36 BIP researchers did find one crayfish species in the thermally affected reach: the non-native White River crayfish, a species more typically found in sloughs, swamps, and sluggish lowland streams.37 In spite of these clear imbalances, the BIP study concluded that the community below the mill is "`balanced' and similar to what would have been there without the thermal discharge" and other sources of pollution.38 DEQ largely agreed, though it found that "the data do suggest some 26 Id. at 8. 27Id. at 37. 28 Id. at 87. 29 Specifically, North Carolina Biotic Index scores. See N.C. Dep't of Envtl. Quality, Standard Operating Procedures for the Collection and Analysis of Benthic Macroinvertebrates 19 (2016) [hereinafter "2016 Benthic SOP"]. 30 BIP App'x B at 7, 38-39. 31 BIP at 9. 32 Id. at 58. 33 Id. at 9 (noting temperature is a limiting factor in the reach nearest the mill because "temperatures in summer can exceed the [riverweed's] reported upper limit of 30 °C reported in the literature"). 34 Nikki J. Maxwell, Baseline Survey and Habitat Analysis of Aquatic Salamanders in the Pigeon River, North Carolina (2009) (unpublished master's thesis, University of Tennessee) (Attachment C). 35 David B. Dunn, A Survey of Crayfish in the Pigeon River and its Tributaries in Tennessee and North Carolina (2010) (unpublished master's thesis, University of Tennessee) (Attachment C). 36 BIP at 8-9. 37 Id. at 89. 38 Id. at 10, 20. 8 impact on the benthos community as a result of the thermal discharge."39 However, it discounted these impacts as "not significant enough to exceed the broad definition of a Balanced and Indigenous Population."40 But impacts do not need to be "significant" to disqualify a discharger from receiving a § 316(a) thermal variance —they only need to be "appreciable" which the BIP study itself defines as the presence of adverse impacts.41 More importantly, DEQ failed to recognize that the BIP study's rosy conclusions are unsupported by the very evidence contained within it. DEQ's reliance upon Blue Ridge Paper's insufficient demonstration is therefore arbitrary and capricious. 1. The BIP study overlooked impacts on several crucial biotic groups. Two important aspects of a balanced, indigenous population are that it (1) is "characterized by diversity" and (2) supports "necessary food chain species." 40 C.F.R. § 125.71(c). EPA guidance42 clarifies that a community43 "characterized by diversity" means "diversity at all trophic levels."44 In other words, "all of the major trophic levels present in the unaffected portion of the water body should be present in the heat affected portions."45 In a similar vein, the presence of "necessary food chain species" means that "the necessary food webs remain intact so that communities will be sustaining."46 If any trophic levels or links in the food chain will not be protected, the § 316(a) demonstration necessarily fails.47 EPA has identified six trophic levels —or "biotic categories" —that should be analyzed in a Section 316(a) demonstration: phytoplankton, zooplankton, "habitat formers,"48 39 Letter from Cyndi Karoly, Chief of the Water Sciences Section, on DEQ's Review of Evergreen Packaging's Balanced and Indigenous Population Assessment, to Wallace McDonald, Manage of Evergreen Packaging (Jan. 11, 2019). 40Id. (emphasis added). 41 See supra notes 21-22. 42 In making the Section 316(a) demonstration, "the discharger shall consider any information or guidance published by EPA to assist in making such demonstrations." 40 C.F.R. § 125.72(e) (emphasis added). 43 The term balanced, indigenous community "is synonymous" with the term balanced, indigenous population. 40 C.F.R. § 125.71(c). 44 Letter from James D. Giattina, Director, EPA Water Protection Division, to Colleen H. Sullins, Director, N.C. DWQ (Feb. 22, 2010) [hereinafter "EPA Objection Letter"] (Attachment B). 45 Id. 46 Id. 47 See U.S. Envtl. Protection Agency, Interagency 316(a) Technical Guidance Manual and Guide for Thermal Effects Sections of Nuclear Facilities Environmental Impact Statements at 16 (May 1, 1977) [hereinafter "EPA Guidance Manual"], https://www3.epa.gov/npdes/pubs/owm0001.pdf (noting that a failure to show the protection and propagation of any of the biotic categories results in a denial of the thermal variance); BIP at 46 (noting the Section 316(a) demonstration must "ensure that all trophic levels present in the unaffected portion of the river were present in the heat -affected portions" (emphasis added)). 48 According to EPA, "habitat formers" are "any assemblage of plants and/or animals characterized by a relatively sessile life stage with aggregated distribution and functioning" as a "living and/or formerly living substrate"; a "direct or indirect food source" for shellfish, fish, and wildlife; a biological mechanism for the stabilization and modification of sediments"; a "nutrient cycling path or trap"; "specific sites for spawning"; or "nursery, feeding, and cover areas for fish and shellfish." EPA Guidance Manual, supra note 47, at 76-77. 9 shellfish/macroinvertebrates, fish, and other vertebrate animals.49 The BIP study largely followed these categories but added a seventh: periphyton.50 After examining these seven categories, the BIP study concluded that "[a]11 trophic levels of the aquatic community (biotic categories) were present,"51 and "[s]implification of the aquatic community through loss of... trophic levels has not occurred."52 Yet the BIP study's own statements, data, and references belie this conclusion for three key biotic categories: shellfish, other vertebrates, and habitat formers. a. Mussels Mussels are "important components of the overall aquatic communit[y]" in the Pigeon.53 Yet "[n]o mussels had been found in [the thermally affected] reach in recent years."54 The BIP discounted the importance of this significant biotic gap by observing that: (1) "no mussels [were] observed at any of the sampling sites during 2012,"(2) DEQ surveys "have not documented any naturally -occurring [sic] mussels in the Pigeon" in recent years, and (3) a recent study "documented proof that mussels could survive and grow in the river below the mill."55 Elsewhere, however, the BIP recognized that rare mussels have been found upstream of the mill, including the federally endangered Appalachian elktoe. Specifically, the BIP noted that a small population of Appalachian elktoe mussels occurs "in the mainstem upstream of Canton,"56 and rare wavy -rayed lampmussels have been found "in the upper [Pigeon] river above Canton" and were "believed to have occurred historically through the lower Pigeon River" below the mill.57 Both the elktoe58 and lampmusse159 are sensitive to high water temperatures. The 49Id. at 18-33. 5o gIP at 45. 51 Id. at 94. 52 Id. at 53. 53 Id. at 50. 54 Id. at 68. 55 gIP App'x B at 77 (emphasis added). 56 BIP at 83. 57Id. at 85. 58 Appalachian Elktoe Determined to be an Endangered Species, 59 Fed. Reg. 60,324, 60,328 (Nov. 23, 1994) ("Appalachian elktoe is found in cool, (it has not been recorded from extremely cold or warm waters) moderate to fast -flowing water."); Gary S. Pandolfi, Jr., Effects of Climate, Land Use and In -Stream Habitat on Appalachian Elktoe (Alasmidonta raveneliana) in the Nolichucky River Drainage 11 (2016) (unpublished master's thesis, Appalachian State University) (Attachment C) (finding that Appalachian elktoe "could be undergoing recruitment failure due to thermally mediated shifts in host fish abundance" and that warmer "[w]ater temperature may also influence mussel metabolic rates, reduce survivorship of glochidia, and alter other life history parameters" ). 59 Jennifer M. Archambault et. al, Burrowing, Byssus, and Biomarkers: Behavioral and Physiological Indicators of Sublethal Thermal Stress in Freshwater Mussels (Unionidae), 46 Marine and Freshwater Behavior and Physiology 229 (2013) (Attachment C) (finding the lampmussel experienced 50% mortality rates between 33.7 and 34.7 °C but noting that "thermal stress can occur at relatively moderate temperatures" around 27 °C and concluding that "above - average stream temperatures and changes in the seasonal phenology of stream temperature profiles and flows may have detrimental behavioral and physiological effects to this already imperiled faunal group"); Heidi L. Dunn & J.R. Petro, Freshwater Mussel Monitoring and Alternate Thermal Standards, Third Thermal Ecology and Regulation 10 elktoe, in particular, is likely range limited in part due to discharges from the mill.60 According to the North Carolina Wildlife Resources Commission, agency "staff and others have consistently found" both rare mussels "within a mile upstream of the mill," with the Appalachian elktoe "most recently found in 2020."61 Neither mussel has been found downstream of the mill at any location upstream of Crabtree Creek —a stretch of nearly 14 miles.62 The only bivalve species that the BIP study did identify occurring in the reach below Canton is the "introduced and rapidly spreading Corbicula fluminea": the invasive —and thermally tolerant —Asiatic clam.63 This species has a "low tolerance for cold temperatures," and often favors river stretches "with thermal discharges where warm effluents can provide a thermal refuge for cold winters."64 Corbicula were found at every Pigeon River basin station up to Pigeon River Mile ("PRM") 64.5 (the station immediately above the mill), where only one was found.65 No clams were found at any sites farther upstream.66 The BIP study attempted to explain away this upstream —downstream pattern in two different ways. First, it suggested that Corbicula "appeared to have been stopped in its regional upstream invasions by the low -head dams at Canton."67 This is incorrect; as the study noted in the previous sentence, the clam has already made it above the dams.68 Therefore, something else must be responsible for this lopsided distribution. Second, the study opined that the presence of this thermally tolerant species downstream of the mill "does not result from the thermal additions by the Mill" because the "two sites of highest abundance do not correlate well with river temperatures."69 But correlation is not causation; just because the BIP study's very limited sample size (only 1 to 23 clams were collected at each site below PRM 64.5) does not show a clear linear pattern tied to temperature does not mean temperature has no effect on the clam's distribution. Asiatic clams are thermally tolerant —not necessarily thermophilic—so it is unclear why the BIP assumed that as temperatures rise closer to the mill, so should clam abundance. The BIP's conclusion that the abundance of a thermally tolerant clam below the mill is not due to the mill's thermal effluent is further undermined by the researchers' failure to conduct winter Workshop Report 1025382 (2012) (Attachment C) (noting that newly metamorphosed juveniles of the wavy -rayed lampmussel experienced high rates of mortality during laboratory holding at 26-27 °C (citing pers. comm.)). 6° S.J. Fraley & J.W. Simmons, An Assessment of Selected Rare Mussel Populations in Western North Carolina Following Extraordinary Floods of September 2004, N.C. Wildlife Res. Comm'n (2006) (Attachment C) ("[T]he downstream distribution of Appalachian elktoe in the Pigeon River ends abruptly at Canton where habitat becomes unsuitable due to a small impoundment and physico-chemical impacts from point and non -point sources."). 61 Letter from Cameron Ingram, Executive Director of N.C. Wildlife Res. Comm'n, on NPDES Permit NC0000272 Renewal, to Sergei Chernikov, N.C. Div. of Water Res. (Mar. 19, 2021). 62 Id. 63 BIP at 86. 64Id. at 87. 65 Id. 66 Id. 67 Id. 68 Id. 69 Id. 11 sampling, even though the BIP recognized that winter is a time of year when "thermal effluent could provide a warm thermal refuge for Corbicula."70 In short, Blue Ridge Paper's own BIP study demonstrated that: (1) indigenous and rare mussel species are extirpated below the mill but still persist in the cooler waters above the mill; and (2) thermally tolerant, non-native Asiatic clams have expanded into the trophic level vacated by these native species below the mill, but have stopped their upstream expansion past the mill into colder waters where native mussels are present. Unless DEQ is prepared to recognize an invasive, thermally tolerant clam as part of a "balanced, indigenous community" in a cold mountain river, Blue Ridge Paper cannot meet its burden to show that the "cumulative impact of its thermal discharge together with all other significant impacts on the species affected, will assure the protection and propagation of a balanced indigenous community of shellfish." 40 C.F.R. § 125.73(a) (emphasis added). b. Crayfish Crayfish are "keystone species" in riverine food webs because they serve as important decomposers of organic material and are a critical food resource for numerous predators.71 The BIP study agreed that crayfish are "important components of the overall aquatic communit[y]" in the Pigeon.72 Yet BIP sampling only turned up small numbers of four crayfish species; and in North Carolina, the only species found in the Pigeon River downstream of the mill was the non- native White River crayfish —a species more typically found in sloughs, swamps, and sluggish lowland streams.73 The BIP study supplemented these findings by incorporating data from a 2010 baseline crayfish survey of the Pigeon River and its tributaries conducted by scientist David Dunn.74 Over the course of eight months, Dunn found 1,320 crayfish specimens representing seven species across numerous sampling sites, including nine Pigeon River tributaries, the mainstem of the Pigeon upstream of the mill, the bypass reach downstream of Walters Dam, and the Tennessee portion of the river.75 But no crayfish were found in the thermally affected reach below the mill.76 Dunn speculated that one possible reason for this could be that the 2007 drought "caused paper mill effluents to concentrate in the river," which "could have created uninhabitable water quality conditions for crayfish to thrive directly downstream of the mill."77 7o Id. 71 Dunn, supra note 35, at 2; id. at 6 ("[C]rayfish are vital to aquatic ecosystem stability."). 72 BIP at 50. 73 Id. at 89. 74Id. at 88. 75 Dunn, supra note 35, at v. 76 Id. at 29-30. 77 Id. at 30. 12 Although the BIP study acknowledged these results, it opined that "thermal mortality is unlikely to be the cause of lack of crayfish in the mainstem Pigeon River" for two reasons.78 First, limited data on upper lethal temperatures for adult crayfish suggest temperatures on the mainstem of the Pigeon would be unlikely to kill crayfish outright.79 Second, Dunn suggested crayfish were more likely escaping increased salinity and conductivity in the mainstem during the drought than heightened temperatures.80 These explanations are insufficient for several reasons. To start, the BIP itself admitted that several species of adult crayfish show significant mortality between 24 °C and 33 °C— temperatures regularly reached below the mill.81 The BIP also acknowledged that juveniles and molting crayfish "may be [even] less tolerant of elevated temperature."82 But even if these temperatures did not cause direct mortality, the BIP agreed that "temperatures above [those] preferred" by native crayfish may explain their absence below the mill.83 It is irrelevant whether these crayfish were killed or moved to escape uncomfortably high temperatures, because the effect on the ecosystem —the loss of important keystone species —is the same. EPA agrees, stating in guidance documents that "a basis for denial [of a § 316(a) demonstration] exists if important fish, shellfish, or wildlife are thermally excluded from the use of the habitat."84 Finally, Dunn's speculations about what element of the mill's concentrated effluent forced crayfish to flee are just that —speculations. The BIP cited no additional surveys that have attempted to test Dunn's hypothesis. Pointing to untested speculations does not satisfy Blue Ridge Paper's burden to show its thermal variance will protect crayfish. Ultimately, the BIP study opined that "[t]oo few crayfish were collected [by BIP researchers] to speculate about protection and sustainability" of crayfish below the mill.85 But then the BIP turned around and did just that, finding that the "cumulative impact of its thermal discharge together with all other significant impacts on the species affected, will assure the protection and propagation of a balanced indigenous community of shellfish" —including crayfish.86 If the BIP supposedly lacked the data to draw any conclusions about crayfish, it could not affirmatively find crayfish will be protected. In fact, plenty of data exists to demonstrate the opposite conclusion: that native, cooler - water crayfish have been extirpated and replaced by a thermally tolerant, non-native, swamp - dwelling crayfish. Though BIP researchers did not find many crayfish, they did incorporate the findings of Dunn, who found over 1,300 specimens. Yet Dunn found no crayfish below the mill, 78 BIP at 90 (emphasis added). 79 Id. at 89-90. 8o Id. at 8. 81 Id. at 89-90. 82 Id. at 90. 83 Id. (emphasis added). 84 EPA Guidance Manual, supra note 47, at 26 (emphasis added). 85 BIP at 90. 86 Id. at 94. 13 which he blamed in part on the mill's discharge. Therefore, the BIP cannot conclude that the crayfish community is "similar to what would have been there without the thermal discharge." This conclusion is arbitrary, capricious, and unsupported by the record. c. Salamanders In many headwater watersheds, salamanders, not fish, dominate the vertebrate community.87 For example, in some streams rare eastern hellbenders—which can weigh up to 2.2 kg —"may act as apex predators" that "exhibit top -down control of aquatic community structure."88 Though ecologically critical, salamanders are very sensitive to changes in water quality, including temperature shifts.89 Stream temperature has been found to limit salamander occupancy in the Southeast.9° The BIP study did not sample for salamanders, but did incorporate findings from a 2009 baseline survey of stream salamander species in the Pigeon River basin conducted by scientist Nikki Maxwel1.91 Maxwell surveyed twenty sites in the basin, including four mainstem sites above the mill and four below.92 No salamanders were found at any of the four mainstem sites below the mill.93 Five different species of stream salamanders were captured elsewhere, with mean abundance peaking in the Pigeon River above the mill and in Big Creek.94 Maxwell's analyses revealed that poor water quality more likely explained the absence of salamanders below the mill than habitat availability.95 For example, Maxwell determined that adequate habitat for the rare eastern hellbender existed below the mill, but water quality issues — including high water temperatures, increased salinity, and conductivity —"potentially limited [its] use" for hellbenders and other native salamanders.96 The BIP study recognized that salamanders "appear to be missing from the Pigeon River downstream of the Mill" but suggested "it seems unlikely" that this is due to thermal stress.97 As support, the BIP cited literature on temperature tolerance for several salamander species 87 Robert D. Davic and Hartwell H. Welsh, Jr., On the Ecological Roles of Salamanders, 35 Ann. Rev. Ecol. Evol. Syst. 405 (2004) (Attachment C). 88 Ashley E. Yaun, Trophic Ecology of an Imperiled Giant Salamander (Cryptobranchus a. alleganiensis) in Southern Appalachian Streams (2019) (unpublished master's thesis, Appalachian State University) (Attachment C). 89 Dunn, supra note 35, at 39. 90 Evan H. Campbell Grant, Amber N. M. Wiewel, & Karen C. Rice, Stream -Water Temperature Limits Occupancy of Salamanders in Mid -Atlantic Protected Areas, 48 J. of Herpetology 45, (2014) (Attachment C). 91 BIP at 90. 92 Maxwell, supra note 34, at 17, 27. 93 Id. 94 Id. at 27. 95 Id. at 36. 96 Id. at v, 39-43. 97 BIP at 90-91. 14 suggesting that individuals can acclimate to a range of warmer temperatures between 31 °C and 41 °C. 98 This conclusion is incorrect for four primary reasons. First, data on the temperatures that cause direct mortality does not address the sublethal effects of high temperatures, such as whether salamanders may be forced to move to cooler -water refugia. Second, only one of the eight supposedly temperature -tolerant species cited by the BIP (Desmognathus quadramaculatus) was found in the Pigeon River basin by Maxwell.99 The thermal tolerances of the other salamanders actually found in the Pigeon may be much different than the focal species of the cited literature. For example, optimum temperatures for the cold -water -loving hellbender range between 9.8 and 22.5 °C 100 Third, all of the studies the BIP cited are acclimation studies, meaning the salamanders were allowed to adjust to warmer temperatures over time. Nothing in the BIP suggested this is the case for salamanders —if any are present —in the Pigeon below the mill. Finally, the BIP study acknowledged that "Critical Thermal Maximums" for salamanders are lower in winter but did not address how this may further impact species in the Pigeon.101 As with the other biotic categories discussed above, the BIP conclusion regarding salamanders contradicted its own research. The BIP acknowledged salamanders exist upstream of the mill but are completely extirpated or absent below it, perhaps in part due to high temperatures. The BIP nonetheless concluded that the biotic community below the mill is "similar to what would have been there without the thermal discharge."102 This conclusion is arbitrary, capricious, and unsupported by the record. d. Riverweed The rooted aquatic plant Podostemum ceratophyllum (hornleaf riverweed) "serve[s] as important structure for other members of the aquatic community" in the Pigeon River basin.103 This "habitat former" produces a thick mat and long stems that have been "repeatedly demonstrated to be an important substrate for promoting benthic invertebrate biomass, abundance, and species richness ... and to positively influence the abundance of several fish species, including the banded darter."104 Podostemum is sensitive to high temperatures, however, with a "reported upper limit of 30 °C reported in the literature." 105 98 Id. 99 Compare id. at 90 (noting this species had a critical thermal maximum of 31.4 °C—a temperature below the monthly average maximum allowed on the mainstem in the summer), with Maxwell, supra note 34, at 27. 1' M.A. Nickerson & C.E. Mays, The Hellbenders: North American "Giant Salamanders" (1973) (Attachment C); S. Conor Keitzer, Thomas K. Pauley, & Chris L. Burcher, Stream Characteristics Associated with Site Occupancy by the Eastern Hellbender, Cryptobranchus alleganiensis alleganiensis, in Southern West Virginia, 20 Ne. Naturalist 666 (2013) (Attachment C). 101 BIP at 90. 1°2 Id. at 94. 1'Id. at51. 1°4 Id. at 91. 1°5 Id. at 92. 15 The BIP study noted the presence or absence of Podostemum while sampling for fish and macroinvertebrates. The plant was found at three of four reference stations upstream of the mill and two of three stations in the Pigeon River in Tennessee.106 However, no Podostemum was found "at all in the thermally affected reach between the Mill and Waterville Reservoir."107 The BIP discounted these results by suggesting temperature "does not appear to be a limiting factor except in the reach nearest the Mill, where temperatures in summer can exceed the reported upper limit of 30 °C."108 Instead, the BIP concluded the aquatic plant's "low dispersal ability ... combined with the Pigeon River's stresses of flooding in 2004 and drought in 2007-2008, may be limiting its ability to recolonize the thermally affected reach after a history of pollution."109 These conclusions are flawed. Flooding and drought conditions affected the entire region, not just the thermally affected sites below the mill. In spite of these conditions, Podostemum managed to persist above the mill and below Waterville Lake, which suggests something more than flooding and drought are responsible for the lack of riverweed below the mill. In addition, the fact that temperature is a limiting factor in the "reach nearest the Mill" is still a problem. Between 2005 and 2009, temperatures at PRM 62.9—below the "mixing zone" —exceeded 30 °C on sixty-three different days."° Blue Ridge Paper cannot simply drop this stretch of the river from the BIP analysis and ignore the probable effects of temperature on a thermally sensitive aquatic plant that serves as an important habitat former for other aquatic biota. Yet again, the BIP recognized that a crucial species is completely extirpated or absent below the mill, at least in part due to high temperatures, but nonetheless concluded that the biotic community below the mill is "similar to what would have been there without the thermal discharge."111 This conclusion is arbitrary, capricious, and unsupported by the record. Blue Ridge Paper acknowledges it must demonstrate that "all trophic levels present in the unaffected portion of the river were present in the heat -affected portions."112 Yet the BIP study showed that crucial biotic groups —including mussels, crayfish, salamanders, and the habitat - forming Podostemum—are all missing from the thermally affected reach. Though Blue Ridge Paper advanced various speculative explanations, none satisfy its burden to show that "the cumulative impact of its thermal discharge together with all other significant impacts on the species affected, will assure the protection and propagation of a balanced indigenous 1°6 Id. Riverweed was also found at both stations in the Swannanoa River, a reference for the study. Id. 107 Id. 108 Id. 109 Id 110 Blue Ridge Paper Products, Pigeon River Temperatures Jan. 2005 — Dec. 2009 (Attachment C). 111 BIP at 94. 112 Id. at 46 (emphasis added). 16 community" of shellfish and other wildlife. 40 C.F.R. § 125.73(a) (emphasis added). DEQ's reliance on this erroneous assessment is therefore arbitrary and capricious. 2. The BIP study ignored substantial differences between upstream and downstream populations of fish and macroinvertebrates. Under the Clean Water Act, a Section 316(a) demonstration must assure the protection of both a "balanced" and "indigenous" population. Such a community "may include historically non-native species introduced in connection with a program of wildlife management and species whose presence or abundance results from substantial, irreversible environmental modifications." 40 C.F.R. § 125.71(c) (emphasis added). However, this does not mean that species attributable to a thermal variance imposed through § 316(a) may be considered part of a balanced, indigenous population. Id. In other words, "prior habitation by a pollution -tolerant community" does not make that community "indigenous."113 As Blue Ridge Paper recognizes, the "balanced, indigenous population" of fish, shellfish, and wildlife contemplated by the Clean Water Act is the population that exists absent the impacts of the applicant's "thermal discharge and other sources of pollution."114 The BIP study ultimately concluded that the biotic community at sites below the mill is "reasonably close to what would be expected at these sites without the influence of the thermal discharge."115 However, the BIP study's own data demonstrate that fish and macroinvertebrates are detrimentally impacted by the mill's thermal effluent, acting in concert with other significant impacts. a. Fish In the absence of the mill's thermal effluent, the Pigeon River below the mill would be a cold -water river.116 Yet the BIP study showed that fish communities downstream of the mill are composed of species that tolerate higher temperatures than those upstream. To start, the study noted that the distribution of most fish species sampled in the Pigeon River "followed one of five well-defined spatial patterns."117 This distribution pattern included one group that was "restricted to or noticeably more abundant upstream of the Canton Mill" and another that was "most abundant" between the mill and Waterville Lake.118 Species that were "much more abundant" upstream of the mill included warmouth, mirror shiner, saffon shiner, and mottled sculpin.119 As the study recognized, these "four species more common upstream of 13 Id. at 19. 114 Id. at 20. 115 Id. at 57. 116 See Bartlett, supra note 1. 117 BIP App'x B at 56. 118 Id. at 56. 119 Id. at 57. The BIP study also claims a pollution -tolerant species —green sunfish —was "much more abundant" upstream of the mill. Id. at 57. This categorization is likely a mistake. Only six green sunfish were found during the entire study period. Id. at 51. One was found above the mill, and five were found at a single station in Tennessee. Id. Given that green sunfish were five times more abundant below Waterville Lake than anywhere else, this species 17 the mill ... are predominantly cool water forms."12° Species that were "restricted to or much more abundant" in the reach downstream of the mill included common carp, white sucker, brown bullhead, bluegill, largemouth bass, yellow perch, flathead catfish, and smallmouth redhorse.121 As the study acknowledged, these species respond well to greater food availability and generally "prefer warm water" and therefore "their higher abundance in the middle reaches is probably the result of more food being available and warmer temperatures."122 Some species, like the thermally tolerant redbreast sunfish and pollution -intolerant rock bass, were found both above and below the mill. However, redbreast sunfish outnumbered rock bass by a 5.7 to 1 ratio below the mill, while rock bass outnumbered redbreast sunfish by a 2 to 1 ratio above the mill.123 In terms of percentage of total catch, redbreast sunfish comprised 33.5% of all fish caught in the thermally affected region and only around 5% of the total catch in the four reference sites above the mill.124 The BIP study acknowledged that together these results show that "the fish community in the North Carolina reach downstream of the Mill has more characteristics of a warm -water fish community than does the river upstream of the Mill."125 But the BIP study blamed much of this disparity on the "physical nature of the river between the Mill and Waterville Reservoir."126 Alternately, the BIP suggested that some of these differences are the result of upstream and downstream barriers to movement —namely the small impoundment upstream of the mill.127 Because of this barrier, some of the cold -water species observed upstream may be "slow to recolonize" the area below the mill.128 These assertions amount to unsupported speculation and ignore the more obvious cause of distinctly different fish communities above and below Canton —the mill's heated discharge. First, the BIP study did not support the notion that the entire thermally affected reach below the mill (PRM 63.3 to —42) is physically different from that above it. Specifically: • From the confluence of the East and West Forks (PRM 69.5), the Pigeon River enters a "clearly distinct" "Broad Basins" subregion, which "persists for approximately 20 miles until about the confluence with Fines Creek (PRM 42.7)."129 Therefore, every thermally should likely have been categorized as "restricted to or noticeably more abundant downstream of Waterville Lake." Id. at 56. 12° Id. at 58. 121 Id. at 57. A few pollution -intolerant darters and shiners were also "restricted to or much more abundant" below the mill. Id. This is unsurprising, given these species were reintroduced in this stretch only. Id. 122 Id. at 58. 123 BIP at 65. 124 See BIP App'x B at 51. 125 BIP at 57. 126 Id. 127 Id. at 66. 128 Id. 129 Id. at 31. 18 affected biological sampling site falls within the same geographic subregion as two of the four upstream sites. • The "substrate in much of the river is dominated by cobble, gravel, and sand with interspersed larger boulders and bedrock," with silt only becoming "more prevalent in the low -gradient reach near Clyde" (PRM 59-55.5).13° In other words, the four to nine miles of river below the mill have substrate comparable —if not functionally identical —to sites above the mill. • The Pigeon's average change in elevation along a stretch extending several miles below the mill (4.0 feet per mile) is also similar to the gradient just upstream of the mill (5.0 feet per mile).131 Second, the study's speculations regarding the effect of the impoundment miss the point. The governing regulation is concerned with "the cumulative impact of its thermal discharge together with all other significant impacts on the species affected," including the impoundment. 40 C.F.R. § 125.73(a) (emphasis added). Noting that the impoundment may contribute to an imbalanced community did not satisfy Blue Ridge Paper's burden to demonstrate that its thermal discharge, in combination with all other significant factors, assures a balanced indigenous community. In fact, the BIP's observation that cold -water species still need to "recolonize" the area below the mill showed that the downstream fish community is not "similar to what would have been there without the thermal discharge."132 Therefore, Blue Ridge Paper's Section 316(a) demonstration necessarily fails. b. Macroinvertebrates In addition to reshaping the downstream fish community, the mill's thermal discharge has also altered the composition of aquatic macroinvertebrates in the Pigeon. These aquatic insects are reliable indicators of stream health, as pollution tolerance varies among different macroinvertebrate taxa. The BIP study found that macroinvertebrates "were present and diverse in all study sites, both thermally affected and reference," and that "[t]otal taxa numbers in the six Pigeon River basin reference sites were similar to the nine thermally affected sites."133 What the BIP neglected to mention is that there was a significant difference in which taxa were found above the mill and which were found below it. To assess how similar macroinvertebrate communities were to each other, the study used the North Carolina Biotic Index ("NCBI") and the Ephemeroptera + Plecoptera + Trichoptera taxa richness index ("EPT Index").134 The former calculates the "relative tolerance of the benthic community to the presence of general stressors, with lower values indicating more pristine conditions and higher values indicating stress."135 The latter calculates the relative tolerance for 13° Id. at 30. 131 Id. 132 Id. at 94. 133 Id. at 64 (emphasis added). 134 BIP App'x B at 22. 135 2016 Benthic SOP, supra note 29, at 19. 19 just the portion of the community represented by the insect orders Ephemeroptera, Plecoptera, and Trichoptera.136 These indices were combined to create final bioclassifications for each sampling site (Excellent, Good, Good -Fair, Fair, or Poor).137 Results showed significant community differences between upstream and downstream. As shown in the table below, NCBI bioclassifications were "Good" immediately above the mill, "Fair" in the five sites immediately below the mill, "Good -Fair" in the next three downstream sites, and then "Good" once more at the N.C. station farthest downstream from the mi11.138 Final bioclassifications were "Fair" to "Excellent" above the mill, "Fair" in the five stations directly below the mill, and "Fair" to "Good -Fair" in the last four North Carolina sites.139 On average, biotic index scores for the four upstream stations were 4.37 ("Good") while the nine thermally affected sites averaged 5.79 ("Fair"). The worst score on the river was directly below the mill.140 Pigeon River Upstream of Mill Pigeon River Below Mill to Waterville Reservoir PRM EF WF 69.5 64.5 63.0 61.0 59.0 57.7 55.5 54.5 52.3 48.2 45.3 NCBI 3.88 5.05 4.39 4.16 6.0 6.44 5.97 6.04 6.12 5.42 5.35 5.42 4.69 NCBI Classification xcellent Good- Fair Good Good Fair Fair Fair Fair Fair Good- Fair Good- Fair Good- Fair Good Overall Classification xcell:- Fair Good Good- Fair Fair Fair Fair Fair Fair Good- Fair Good- Fair Fair Good - Fair This pattern of more pollution -tolerant macroinvertebrate taxa below the mill's thermal discharge matches other recent assessments in the Pigeon River. Recent benthos surveys conducted by DEQ in 2017 classified a stretch downstream of the mill near Clyde as "Fair" on the EPT index, explaining that "high water temperatures and a high specific conductance in - stream" are "chronic problem[s] at this site and a result of upstream effluent" from the mill.141 As a result, the river below the mill is currently listed as "impaired" for benthic macroinvertebrates on North Carolina's § 303(d) list from the discharge to a point six miles downstream.142 In 2020, DEQ proposed expanding this impaired area even farther downstream.143 136 Id 137 BIP App'x B at 22. 138 Id. at 37. 139 Id 14° Id. at 38. 141 N.C. Dep't of Envtl. Quality, Div. of Water Res., Benthos Site Details EB 257 (Pigeon River) [hereinafter "EB 257 Survey"] (Attachment C). 142 N.C. Dep't of Envtl. Quality, 2018 NC Category 5 Assessments '303(d) List' Final, https://files nc.gov/ncdeq/ Water%2OQuality/Plarm ing/TMDL/3O3d/2018/2018-NC-303-d--List-Final.pdf. 143 See supra note 6. 20 The BIP study acknowledged that the "mill effluent [is] influencing downstream benthic communities,"144 but downplayed the significance of the poor biotic scores below the mill. First it dismissed the biotic index scores for the upstream reference areas as only "somewhat better on average" than those in the thermally affected reach below the mill.145 Second, the study noted that the biotic index analysis used thresholds "for mountain streams and it should be recognized that many of the thermally affected stations are slowly moving, silty habitats unlike mountain streams."146 These explanations are flawed for at least three reasons. First, the index scores for the upstream sites were rated two categories higher, on average, than the downstream sites —a statistically significant result that explains why sites below the mill are listed as impaired and those above the mill are not. Second, Blue Ridge Paper does not dispute that the thermally affected sites should be analyzed using DWR's mountain stream index thresholds.147 It cannot disclaim DWR's index scoring system merely because it does not like the outcome. Third, as explained above, the physical characteristics of the Pigeon at many of the thermally affected samplings stations are not different than those above the mill.148 Thus, Blue Ridge Paper's attempt to characterize the reach below the mill as "unlike [a] mountain stream[]" is belied by its own data.149 In sum, the BIP study showed that pollution -tolerant macroinvertebrates are common below the discharge, while pollution -intolerant species are found above it. These findings directly contradict the claim that the downstream sites are reasonably "similar to what would have been there without the thermal discharge" and other sources of pollution.'5° DEQ's reliance on this unfounded conclusion is arbitrary, capricious, and unsupported by the record. 3. The BIP study cannot avoid assessing the cumulative impacts of thermal effluent together with "all other significant impacts" in the Pigeon River. Blue Ridge Paper's thermal impacts cannot be considered in isolation. Instead, Blue Ridge Paper must show that "the cumulative impact of its thermal discharge together with all other significant impacts on the species affected, will assure the protection and propagation of a balanced indigenous [population]." 40 C.F.R. § 17 (emphasis added). Though the BIP study 144 BIP App'x B at 39. 145 BIP at 64. 146 Id. 147 See BIP App'x B at 16. 148 See supra Part II.B.2.a. 149 Blue Ridge Paper provided no data to support its contention that waters are "slowly moving" below the mill. See generally BIP. It also is not clear why mountain streams —especially polluted ones like the Pigeon River —cannot be "silty." To the extent Blue Ridge Paper is suggesting that sediment pollution makes the Pigeon River unsuitable for assessment using DEQ's mountain ecoregion thresholds, it is mistaken. 'so Id. at 94. 21 recognized this obligation,151 its analysis reflected a fundamental misunderstanding of what the law requires. Instead of assessing the "cumulative impact" of the thermal discharge with "all other significant impacts," the BIP assessed how "other pollutants ... might interact with warmer temperatures to enhance detrimental effects."152 What this means is that the BIP only analyzed whether higher temperatures make other pollutants more potent. For example, the BIP study noted that "[t]emperature elevation should not affect the color" of the river nor the potency of "individual toxicants" at the "exposure durations seen in the Pigeon River."153 But the object of the BIP is not only to assess how temperature may enhance the toxicity of discrete pollutants considered separately. Rather, the BIP must determine whether the elevated temperature, together with "all other significant impacts," allows for a balanced, indigenous population. The BIP study compounded this error by repeatedly assuming, without scientific support, that pollutants discharged in quantities that do not exceed permit limits have no "interaction" with temperature. For instance, the BIP noted that "chloroform is assumed to not interact detrimentally with slightly elevated temperatures in the river" because chloroform limits are based on EPA effluent guidelines.154 Similarly, the study "assumed that there would be little interaction between slightly elevated temperature and chlorinated organic materials" because the mill is already meeting federally mandated requirements for chlorinated organic compounds.155 Likewise, "it is assumed that [chlorinated phenolics] will not interact with slightly elevated temperatures in the river" because the daily maximum limits in the permit are already lower than federal requirements.156 These unsupported assumptions reveal no useful scientific findings about the interactions between temperature and other pollutants.. The BIP study also erred by refusing to consider impacts from anything besides discharged pollutants. For example, the BIP failed to analyze the cumulative impacts of the thermal discharge together with "naturally severe conditions" like the 2007-2008 drought.157 During the summer of 2007, almost 8,500 fish were killed by high water temperatures below the mill. Though the BIP recounted this event, it declined to consider how the mill's thermal effluent contributed to the fish kill. Instead, it suggested that a "significant regional drought in 2007-2008 reduced stream flows in the Pigeon River to record lows and raised ambient river temperatures, which resulted in a one -day kill of fish in the river immediately downstream of the discharge."158 Because the mill's heated "discharge remained essentially constant" in temperature and volume, 151 Id. at 61. 152 Id. (emphasis added). 153 Id. at 62. 154 Id. at 63 (emphasis added). 155 Id. (emphasis added). 156 Id. (emphasis added). 157 Id. at 29. 158 Id. at 28. 22 and no permit limits effective at the time were violated, the BIP found the thermal discharge was not to blame for the ki11.159 This finding is contrary to law and common sense. Elsewhere, the BIP did not dispute that the cumulative effect of the thermal effluent, together with the drought, low -flow conditions, and hot weather combined to kill thousands of fish below the mill.160 The BIP's own analysis of the kill noted that river temperatures upstream of the mill were 20.6 °C to 22.4 °C—well below the thermal tolerances of the fish that were killed downstream.161 Below the mill, however, there was "little (or possibly no) flow in the river other than the thermal discharge," which ranged from 33.8 °C to 36.9 °C.162 These temperatures "were within the range that would be lethal to many riverine fishes."163 Thus, while low flows and higher temperatures may have "contributed to the fish kill,"164 the mill's heated effluent was unquestionably a but -for cause. As this example illustrates, the BIP study did not assess how the mill's thermal effluent contributed to past cumulative adverse impacts to species below the mill. Nor did the study prospectively assess how the thermal discharge would interact with future droughts or natural stressors to cumulatively impact aquatic communities below the mill. Because the BIP study failed to adequately analyze cumulative impacts to species as required by federal regulations, it cannot support the grant of a thermal variance. 4. The BIP study cannot rely on summer -only biological data or comparisons to the dissimilar Swannanoa River, which both skewed the study's findings. In addition to the defects described above, the BIP study suffered from two significant design flaws that further undermine its conclusions. First, BIP researchers failed to sample throughout the year to capture seasonal changes. Second, the study relied in part on an apples -to - oranges comparison between the Pigeon and Swannanoa Rivers. a. Summer -only sampling EPA regulations require a balanced, indigenous population to have "the capacity to sustain itself through cyclic seasonal changes." 40 C.F.R. § 125.71(c). EPA interprets this provision to mean that "any additional thermal stress will not cause significant community instability during times of natural extremes in environmental conditions."165 In practical terms, this means that "[c]ommunity data should be collected during normal seasonal extremes as well as during optimal seasonal conditions."166 "At a minimum," EPA recommends taking shellfish 159 See id. ("[D]eclining flows ... caused the abnormally high temperatures."). 160 See id. at 92. 161 BIP App'x D at 2-5. 162 Id. at 2-3. 163 Id. at 4. 164 Id. at 3. 165 EPA Objection Letter, supra note 44 (Attachment B). 166 Id. (emphasis added). 23 and macroinvertebrates samples "quarterly for one year,"167 while fish community samples "shall be taken at monthly intervals to provide data representing seasonal and life stage habits except during and immediately following periods of spawning when a more intensive sampling effort should be provided."168 Even when intensive sampling efforts like these are not feasible, the BIP study and EPA both emphasize the importance of winter biota sampling for a Section 316(a) demonstration. For example, EPA notes that the "distribution of the various life stages of fish is dependent upon many factors including season,"169 which necessarily means that sampling in one season will miss impacts to temporary community assemblages that vary from season to season. The BIP study also recognized that some species are more vulnerable to temperature spikes in the winter,170 while thermally tolerant invasive species like Corbicula often shelter in thermal plumes during the cold season.171 In addition, because water flows are higher during winter, the thermal plume mixes less readily with the river, meaning the plume's impacts can stretch even further downstream.172 Several conservation groups alerted Blue Ridge Paper to these problems before BIP research began.173 Specifically, they urged Blue Ridge Paper to sample biota at least twice to present a more complete picture and to capture any seasonal dynamics. Blue Ridge Paper rejected these recommendations and proceeded with a single late -summer sampling effort from July to September 2012.174 According to the BIP, late -summer sampling sufficed because it occurs at the end of the extreme warmest period when community instability might be identified, and it allows identification of year -around survival and reproduction by collecting juveniles of most species. Sampling through the year would be redundant and constitute an unacceptable loss of aquatic life. Additionally, because of higher river flows during winter and spring, field data collection in these periods is more difficult and can risk field personnel safety.175 This explanation is insufficient. The BIP cannot claim that the biotic community below the mill has "the capacity to sustain itself through cyclic seasonal changes" if it failed to study those seasonal changes. 40 C.F.R. § 125.71(c) (emphasis added). A proper BIP must show that 167 EPA Guidance Manual, supra note 47, at 25. 168 Id. at 30. 169 Id 17° BIP at 90 (noting salamanders have lower "Critical Thermal Maximums" in winter). 171 Id. at 87 (noting "warm effluents can provide a thermal refuge for cold winters"). 172 Id. at 43. 173 Letter from Austin D.J. Gerken, counsel for Western North Carolina Alliance (now MountainTrue) and Clean Water for North Carolina to Chuck Cranford, DWQ Surface Water Protection Supervisor (Apr. 13, 2012) (Attachment C). 174 See BIP at 4 (noting that "stream temperatures are typically the warmest" during the summer and therefore summer sampling is likely to capture "the most severe" biological impacts). 175 Id. at 47. 24 "any additional thermal stress will not cause significant community instability during times of natural extremes"—plural.176 Sampling during one natural extreme, such as the "extreme warmest period," fails to capture dynamics during other extremes such as winter. When ambient river temperatures are lower in winter, the mill's heated effluent has a more disruptive effect on overall river temperatures. More importantly, heated effluent may allow the warm -water, pollution -tolerant community identified by the BIP below the mill to persist and gain dominance during the winter, inhibiting recolonization by cold -water indigenous species. The BIP's concerns about redundancy and loss of aquatic life are also unfounded. The BIP has no evidence to suggest that winter sampling is redundant, having failed to do it. And the BIP's own study methods guard against unacceptable losses of aquatic life. Fish samples were collected via electrofishing, which is generally non -lethal if conducted properly. All captured fish "were held in water -filled tubs until sampling was completed, at which time [they were] released."177 Collection practices for other biotic categories were also generally non -lethal: crayfish were collected using "modified minnow traps, electroshocking, snorkeling and turning rocks";178 mussels and riverweed were assessed by noting presence or absence only;179 periphyton were measured but not collected;180 and wildlife were simply "observed." 181 Collection is lethal to macroinvertebrates, but the BIP did not explain why adding one winter sampling event would constitute an "unacceptable" loss of benthic macroinvertebrates. Nor did the BIP weigh these one-time sampling losses at discrete locations against the threat posed by the mill's continued discharges to the entire population of aquatic insects below Canton. While scheduling sampling efforts to avoid risky field conditions is important, the BIP did not attempt to demonstrate that higher river flows are present throughout the entirety of fall, winter, and spring, such that they pose an unabating safety risk to personnel. Without such a showing, Blue Ridge Paper cannot justify its failure to protect a balanced, indigenous community year-round as required by law. The failure to capture these seasonal dynamics means the BIP's conclusions are fundamentally flawed. DEQ cannot rely on this truncated study to justify its thermal variance. b. Swannanoa River As the BIP study acknowledged, the purpose of the Section 316(a) demonstration is to assess whether the current community "approximate[s] the biotic community that would have been there without the thermal discharge and other sources of pollution."182 To that end, EPA 16 EPA Objection Letter, supra note 44(Attachment B) (emphasis added). 177 BIP App'x B at 20. 178 BIP at 36. 179 BIP App'x B at 77; BIP at 59. 18° BIP App'x B at 81. 181 Id. at 80. 182 BIP at 20. 25 has suggested that "it may be appropriate to use a nearby water body unaffected by the existing thermal discharge as a reference area."183 The BIP study used two primary reference areas: four upstream sites on the Pigeon River and two sites on the Swannanoa River. To justify selecting the latter, the BIP noted that the Swannanoa has "comparable basin morphology and is part of the larger French Broad River basin."184 In addition, the Swannanoa "has similar headwater elevation and gradient characteristics as the Pigeon River, and has a similar pattern of land use and development."185 A closer look shows that the Swannanoa is not an appropriate reference river. To start, the drainage basin of the Swannanoa River is 1/4 the size of that for the Pigeon River, and the Swannanoa is much smaller than the Pigeon.186 Some sections of the Swannanoa, including a section near Warren Wilson College where BIP sampling occurred, are listed as impaired for benthos on the North Carolina Section 303(d) list.187 In addition, the Swannanoa sampling locations are at a lower altitude than the Pigeon River sampling locations, which may explain in part why sampling revealed that the Swannanoa is significantly warmer than the upper Pigeon.188 The BIP's reliance on the Swannanoa as a reference river undermined the conclusions of the BIP study. The Upper French Broad River downstream of Rosman, or a suitable altitude reach of the Nolichucky may be more appropriate for comparing aquatic life. However, even using the Swannanoa as a reference site, the BIP still found that the thermal discharge negatively affects the aquatic community below the mill. The BIP study dismissed and discounted clear indicators that the thermal pollution from the mill has altered, and will continue to dramatically alter, the aquatic communities in the Pigeon River. Based on the record before the agency, a balanced and indigenous population is not present. Greenlighting a continued thermal variance will only perpetuate its absence. Furthermore, neither the BIP study nor any other permit materials make the other required showing that North Carolina's standard temperature limits are "more stringent than necessary" to protect a balanced, indigenous population. See 33 U.S.C. § 1326; 40 C.F.R. § 125.73(a) (requiring the applicant to demonstrate that water quality standards are more stringent than necessary). The thermal variance cannot be granted on the current record. 183 EPA Objection Letter, supra note 44 (Attachment B). 184 BIP at 41. 185 Id. 186 N.C. Dep't of Env't & Nat. Res., Div. of Water Quality, French Broad River Basinwide Water Quality Plan (2011). 187 See supra note 5. 188 See BIP App'x B at 84 (noting that while the four upstream sites on the Pigeon averaged around 20.9 °C, the two Swannanoa sites averaged 23.1 °C—a difference of more than two full degrees). 26 C. DEQ's Draft Permit does not protect the biological integrity of the Pigeon River. The Pigeon River below the mill is designated as Class C waters, meaning that it must be "suitable" for "aquatic life propagation, survival, and maintenance of biological integrity (including fishing and fish); [and] wildlife." 15A N.C. Admin. Code 2B .0211(1)—(2). "Biological integrity" is defined as "the ability of an aquatic ecosystem to support and maintain a balanced and indigenous community of organisms having species composition, diversity, population densities, and functional organization similar to that of reference conditions." Id. § 2B .0202(12). For the reasons described above in Part ILB, there is no balanced and indigenous community below the mill at least in part due to the mill's discharge. DEQ is well aware of this imbalance, having listed the reach below the mill as impaired for benthos for decades. DEQ is also aware that the mill's effluent is causing this impairment.189 However, DEQ has opted to maintain the status quo and keep the same inadequate permit limits that allowed this imbalanced, non-native community to proliferate. Because DEQ's Draft Permit "cannot reasonably ensure compliance with applicable water quality standards," DEQ may not issue the permit as written. Id. § 2H .0112(c) D. The Draft Permit's relaxed testing schedule for fish -tissue dioxin fails to protect of public health. Dioxins are a class of chlorinated compounds that are recognized as carcinogens.19° Because dioxins are not biodegradable, they bio-accumulate in the food chain, meaning that they continue to "pile up in the fat tissue of animals and humans" long after they have been released into the environment.191 Dioxins are also lipophilic: they are not soluble in water, but do bind strongly to sediment and organic matter.192 For these reasons, dioxins are notoriously persistent in the environment, even after discharges have ended. Historically, the Canton paper mill discharged dioxins and furans as byproducts of its chlorine bleaching process, contaminating the Pigeon River, Waterville Lake, and beyond. In the late 1980s, elevated levels of dioxin were found in fish tissue throughout the lower Pigeon River, triggering North Carolina and Tennessee to issue fish consumption advisories for all fish in the river below the mill. In 1989, the mill made changes to its treatment of polluted effluent to remove dioxin congeners. Since then, levels of dioxin and furan in the river have declined but 189 See EB 257 Survey, supra note Error! Bookmark not defined. (explaining that the poor water quality below the mill is due in part to "high water temperatures and a high specific conductance in -stream" which are "chronic problem[s] at this site and a result of upstream effluent" from the mill); see also supra note 39. 19° Agency for Toxic Substances & Disease Registry, Chlorinated Dibenzo-p-dioxins (CDDs) (1999), https://www. atsdr.cdc.gov/toxfaqs/tf.asp?id=363&tid=63. 191 European Commission, Fact Sheet on Dioxin in Feed and Food (July 20, 2001), https://ec.europa.eu/commission/ presscorner/detail/en/MEMO_01_270; U.S. EPA, Exposure Assessment Tools by Media —Aquatic Biota (Oct. 23, 2020) [hereinafter "EPA Exposure Assessment"], https://www.epa.gov/expobox/exposure-assessment-tools-media- aquatic-biota. 192 Ohio River Valley Water Sanitation Commission, Dioxin in the Ohio River Basin (1997), http://www.orsanco. org/wp-content/uploads/2016/09/finaldioxinreport.pdf; EPA Exposure Assessment, supra note 191 (noting dioxins have "low solubility in water and exist mostly sorbed to particles"). 27 have not been eliminated. Dioxin binds strongly to river sediments, so stopping use at the mill did not eliminate dioxin in the Pigeon River. Because of the persistent nature of dioxins, Blue Ridge Paper has been required to conduct fish -tissue sampling as a condition of its NPDES permit for decades. Under the 2010 permit, for example, Blue Ridge Paper was required to conduct fish -tissue dioxin sampling during the 1st, 3rd, and 5th calendar year of the permit. During the most recent sampling effort in 2014, common carp fillets at one of the two sampling stations had dioxin levels of 9.619 parts per trillion ("ppt")—more than double North Carolina's 4 ppt toxic equivalency ("TEQ") action level to trigger a fish consumption advisory,193 and more than sixty-four times greater than EPA's own risk -based consumption limit of 0.15 ppt for fish -tissue dioxin.194 When DEQ administratively extended the 2010 permit for another five years, fish -tissue sampling was not continued, perhaps because of the way the original permit condition was structured (instead of requiring testing every other year, it required testing on the 1st, 3rd, and 5th years). DEQ made no effort to restructure the fish -sampling condition through a modification to avoid a five-year gap in sampling during the extension period. Despite this seven-year testing gap —and despite finding a TEQ exceedance the last time testing occurred—DEQ now proposes reducing the frequency of fish -tissue sampling to only once per five-year permit period.195 DEQ attempts to justify this reduction in two ways. First, it speculates that the TEQ- exceeding specimens found during the last round of testing in 2014 could either be "anomalies, or could indicate that some fish are present in the population with relatively higher TEQ values."196 Second, DEQ points to a high -volume dioxin sampling study conducted by EPA in 2014 concluding that "the most potent of congeners in the series, 2,3,7,8 — TCDD, was not detected in dissolved samples at the reporting limit of 0.0012 parts per quadrillion at any station."197 Neither rationale withstands scrutiny. The speculation that the 2014 results are anomalous is baseless. To start, the procedures followed by Blue Ridge Paper's hired consultants are designed to guard against "anomalous" results. Multiple specimens of two different target species were collected using study methods approved by DEQ.198 Fillets from each specimen were then combined into a "composite" sample using EPA -approved procedures.199 Testing composite samples instead of individual specimens reduces the chance that results will be skewed by individual fish with higher relative toxin loads. 193 Draft Fact Sheet at 4. 194 U.S. Envtl. Protection Agency, Guidance for Assessing Chemical Contaminant Data for Use in Fish Advisories at 5-105 (2000), https://www.epa.gov/sites/production/files/2018-11/documents/guidance-assess-chemical- contaminant-vol2-third-edition.pdf. 195 Draft Permit at 18 (requiring a fish -tissue analysis during the 2nd calendar year of the permit). 196 Draft Fact Sheet at 4. 197 Id. (emphasis added) (quoting U.S. EPA, Pigeon River Dioxin High Volume Sampling Report (2014) [hereinafter "EPA Dioxin Report"] (Attachment C)). 198 Blue Ridge Paper Products Inc dba Evergreen Packaging, 2014 Dioxin in Fish Tissue Report NPDES NC 0000272 at 1 (Feb. 2, 2015) (Attachment C). 199 Id. at 15. 28 If these composite samples showed TEQ exceedances more than two times the state limit in 2014, then DEQ should not discount them. DEQ's related hypothesis —that the 2014 tests "could indicate that some fish are present in the population with relatively higher TEQ values" —would seem to be precisely the result the testing is designed to detect. To the extent DEQ is suggesting that other, untested fish may have had "relatively" lower TEQ values, it is engaging in speculation not supported by the 2014 test itself. At any rate, the presence of dioxin at higher levels even in some fish is a reason to continue testing fish tissue, especially in a river with known recreational uses. DEQ's citation to EPA's 2014 high -volume dioxin sampling is also misleading. That study conducted testing for numerous dioxin and furan congeners —not just the cited 2,3,7,8- TCDD—in both dissolved and particulate form at four different sites: one above the mill, one several miles below, and two in Waterville Lake.200 Notably, sampling site PRO2—the site directly below the mill —had the highest particulate dioxin concentrations for every congener tested in the study.201 Every congener identified at PRO2 also exceeded EPA's reporting limit; for example, particulate 2,3,7,8-TCDD was detected at a concentration of 4 ppt—nearly four times the reporting limit of 1.2 ppt.202 The same pattern held true for furans; sampling site PRO2 had the highest recorded particulate concentrations for nine out of ten furan congeners, exceeding the reporting limit in each case.203 Total particulate values for tetra, penta, hexa, and hepta dioxins and furans were also highest at PRO2.204 In its discussion, EPA concluded that "the majority of the contaminants of interest appear to be bound in solids greater than one micron, as particulate concentrations of dioxins and furans were higher than dissolved concentrations, except for" one furan congener at the station upstream of the mill ("PRO1") and at the lower end of Waterville Lake ("PRO4").205 EPA also noted that "[p]articulate concentrations for all analytes peaked at PRO2, decreasing downstream with concentrations at PRO4 returning to levels comparable to those at PRO1 as particulates most likely settled out of the water column."206 As these results make clear, the fact that dissolved levels of 2,3,7,8-TCDD were not detected above the reporting limit at any station is only a fraction of the story. Particulate dioxins and furans were much more prevalent in general, and found in much higher concentrations below the mill. In fact, particulate concentrations below the mill exceeded reporting requirements in 200 EPA Dioxin Report, supra note 197, at 5-12. 201 Id. at 13-14. 2°2 Id. at 14 (results from the study were converted from pg/L, or parts per quadrillion, to parts per trillion). 203 Id. 204 Id. at 18. at 24. 205 Id. at 36. 206 Id. 29 almost every instance. And it is these particulate -bound dioxins that are largely responsible for fish dioxin in the first place.207 Because dioxins and furans—especially particulate -bound congeners —are still very much present in the Pigeon River watershed, DEQ would be remiss in reducing the frequency of fish -tissue sampling to only once a permit term. If this schedule is adopted and implemented, by the end of the permit term in 2026 Blue Ridge Paper will have conducted fish -tissue dioxin sampling only once in twelve years, in an area where dioxin is known to be present. This level of testing is insufficient to ensure the protection of public health and must be revised to require at least the same amount of testing —every other year, for a total of three times per five-year permit period —as the 2010 permit before it was administratively extended. E. DEQ must develop and impose technology -based effluent limitations for numerous pollutants. DEQ may only issue an NPDES permit if it assures compliance with all technology - based and water -quality -based effluent limits. 33 U.S.C. § 1342(a)(1)(A); 40 C.F.R. § 122.43(a). Technology -based limits set the minimum level of control required in every NPDES permit. 40 C.F.R. § 125.3(a). A permittee must implement technology -based standards, even if doing so goes beyond the level necessary to meet water quality standards.208 However, if technology - based standards are insufficient to meet water quality standards, then dischargers must do whatever more is necessary to satisfy the water quality standards, including imposing water - quality -based effluent limitations.209 As a starting point, the required technology -based limits are derived from one of two sources: (1) national effluent limitation guidelines ("ELGs") issued by EPA for various industries, 33 U.S.C. § 1314(b); or (2) case -by -case determinations using the "best professional judgment" ("BPJ") of permit writers when EPA has not issued an ELG specific to industry discharges, see 33 U.S.C. § 1342(a)(1)(B); 40 C.F.R. § 125.3(c)(2). When EPA has promulgated ELGs but they only apply to certain pollutants or activities, other pollutants or activities "are subject to regulation on a case -by -case basis" using BPJ as well. 40 C.F.R. § 125.3(c)(3). North Carolina rules also require technology -based limits, and in the absence of a promulgated ELG, direct agency staff to calculate a limit using EPA development documents and other available information. See 15A N.C. Admin. Code 02B .0406(b)(3). Here, EPA has developed ELGs for the Pulp, Paper, and Paperboard Point Source Category. 40 C.F.R. § 430. This category describes ELGs for select pollutants, including adsorbable organic halides, chloroform, dioxin, chlorinated phenolics, trichlorophenol, pentachlorophenol, and total suspended solids. Id. §§ 430.22-24. However, the Pulp and Paper category, originally promulgated in 1974, does not address numerous other pollutants discharged 207 Environmental Contaminants in Biota: Interpreting Tissue Concentrations at 109 (W. Nelson Beyer & James P. Meador, eds., 2d ed. 2011) (Attachment C). 208 U.S. Envtl. Protection Agency, NPDES Permit Writers' Manual at § 5.1 (2010) [hereinafter "Permit Writers' Manual"], https://www.epa.gov/sites/production/files/2015-09/documents/pwm 2010.pdf. 209 Id. 30 by the Canton mill in 2021. In addition to pulp- and paper -related operations, for example, the mill continues to rely on coal -burning for some of its power generation and is responsible for processing Canton's domestic wastewater. The mill also likely has used forever chemicals in its processes, based on the presence of those chemicals in seeps from the mill's old waste dumps. In the Draft Permit, DEQ mistakenly limits its analysis of technology -based limits to only those pollutants subject to the outdated ELG. For those pollutants not specified in the ELG, DEQ skips straight to assessing the need for water -quality -based effluent limits. But both state and federal law require DEQ to develop technology -based limits using its BPJ before evaluating the need for water -quality -based effluent limits. See, e.g., 33 U.S.C. 1311(b) (requiring the application of "any more stringent limitation" including water -quality -based limits if technology - based limits are insufficient to protect water quality standards). For example, DEQ lists many pollutants not covered by the ELG, including arsenic, cadmium, chromium, copper, cyanide, fluoride, lead, mercury, molybdenum, nickel, selenium, silver, and zinc. Instead of evaluating best available technology controls for these pollutants, DEQ only asks whether these pollutants have the reasonable potential to violate water quality standards.210 Ultimately, DEQ declines to impose numeric limits on most of these pollutants after finding that they are unlikely "to cause a violation of the North Carolina stream standard."211 But even if this is true, it does not give DEQ permission to forgo the development of technology -based limits. Technology -based effluent limits set "the minimum level of control that must be imposed" in an NPDES permit, even if they result in pollution levels that are stricter than those required by state water quality standards. 40 C.F.R. § 125.3(a) (emphasis added). Conducting a reasonable potential analysis before imposing technology -based limits flips the Clean Water Act's permitting regime on its head. DEQ must, at a minimum, go through the proper steps to develop technology -based effluent limits for the mill's polluted discharges, including those pollutants DEQ subjected to a reasonable potential analysis for compliance with water quality standards. As discussed below under Part II.H, DEQ should extend this analysis to any forever chemicals present in the mill's discharges or treatment systems. F. The Draft Permit lacks sufficiently strict conditions to protect the Pigeon River from colored and other wastes. As Class C waters, the Pigeon River below the mill must be "suitable" for "aquatic life propagation, survival, and maintenance of biological integrity (including fishing and fish); wildlife; secondary contact recreation ... [and] agriculture." 15A N.C. Admin. Code 2B .0211(1)—(2). To protect those uses, the EMC has set water quality criteria for multiple pollutants, including "colored or other wastes." Id. § 2B .0211(12). This narrative water quality standard allows such wastes in "only such amounts as shall not render the waters injurious to public health, secondary recreation, or to aquatic life and wildlife, or adversely affect the 210 Draft Fact Sheet at 6. zit Id. 31 palatability of fish, aesthetic quality, or impair the waters for any designated uses." Id. (emphasis added). The Clean Water Act requires NPDES permits to include "any more stringent limitation" necessary to meet "water quality standards." 33 U.S.C. § 1311(b)(1)(C). If application of minimum technology -based effluent limits leaves a "reasonable potential" that water quality standards will be violated, then an NPDES permit must impose additional water -quality -based effluent limits to ensure water quality standards are not violated. 40 CFR § 122.44(d)(1)(i); see also 15A N.C. Admin. Code 2H .0112(c) (requiring NPDES permits to "ensure compliance with applicable water quality standards"). DEQ's Draft Permit proposes the following limits on Blue Ridge Paper's discharge of colored waste: an annual average color limit of 36,000 lbs/day, a monthly average color limit of 52,000 lbs/day, and a daily maximum color limit of 105,250 lbs/day.212 These are the same limits implemented by the 2010 permit.213 The primary difference is that in 2010, DEQ found those limits would not ensure compliance with North Carolina's narrative water quality standards, and therefore found those discharge levels required a variance. In 2020, DEQ reaches the opposite conclusion and suggests removing the variance requirement and making no further progress on color reductions. DEQ's approach is problematic because it omits consideration of current color - reduction technologies and focuses too narrowly on only one component of the narrative water quality standard. 1. The agency fails to evaluate available technologies for further reductions on colored discharges. As described above, technology -based effluent limitations set the minimum level of control required in every NPDES permit. 40 C.F.R. § 125.3(a). For non -conventional pollutants like "colored or other wastes," these limits must be based on "application of the best available technology economically achievable." 33 U.S.C. § 1311(b)(2)(F). Here, DEQ does not attempt to determine what color -reduction technologies are currently available. Instead, it copies and pastes its work from more than a decade ago, noting that its proposed color limits "were established in accordance with the Technology Review Workgroup['s ("TRW's") 2008] recommendations for the 2010 permit renewal."214 However, these recommendations were intended to apply to the 2010 permit, not a subsequent permit 212 Draft Permit at 4-5. 213 Compare N.C. Dep't of Env't & Nat. Res., NPDES Permit No. NC0000272 Blue Ridge Paper Produces Inc. at 6 (May 25, 2010) [hereinafter "2010 Permit"], with Draft Permit at 4-5. The 2010 permit set an initial annual average limit of 38,020 lbs/day, but further required that four years after the permit became effective "the average annual discharge of true color for each calendar year shall not exceed 32,000-36,000 pounds per day." 2010 Permit at 6. 214 Draft Fact Sheet at 6 (emphasis added). The TRW was originally created in 1997. Following a settlement agreement, representatives of EPA, Tennessee, and North Carolina convened to form the TRW to analyze available color -reduction technologies that could be used at the Canton mill. The group reconvened in 2007 to assess available technologies for the forthcoming 2010 permit. 32 twelve years in the future.215 Moreover, the color limits proposed by the TRW in 2008 were based on technology and costs in 2008—not 2020. Because these recommendations are twelve years past their expiration date, DEQ may not rely on them to craft its current permit limits without adequate explanation as to how they reflect current technology.216 Although DEQ's reasons for freezing the permit limits are flawed, so is the outcome. The Clean Water Act and North Carolina state law require increasingly stringent permit limits over time. See, e.g., 33 U.S.C. § 1251 (stating a motivating purpose of the Clean Water Act is the "eliminat[ion]" of discharges of pollutants to jurisdictional waters). But the Draft Permit stalls out progress on reductions in daily, monthly average, and annual average color permit limits across the board. DEQ must assess the potential to achieve stricter color limits, as the TRW — and the Clean Water Act —intended. 2. DEQ advances a flawed, overly narrow interpretation of North Carolina's narrative aesthetic water quality standard. EPA and DEQ have previously interpreted North Carolina's narrative standard for "colored and other wastes" and its reference to "aesthetic quality" to include meeting an in - stream limit of 50 platinum -cobalt units ("PCUs") of true color per liter of water, although that interpretation has not been advanced in any formal rulemaking.217 In the Draft Permit, DEQ now proposes (1) removing Blue Ridge Paper's color variance based on the 50 PCU in -stream limit; and (2) altering its interpretation of the color standard to prohibit monthly average true -color levels in Blue Ridge Paper's discharge from exceeding the background (upstream) true -color level by more than 50 PCU when the Pigeon River flow at Canton is greater than or equal to the monthly 30Q2218 of 129 cubic feet per second.219 This new interpretation of North Carolina's narrative water quality standard is fundamentally flawed in two ways. First, DEQ's narrow focus on a numeric true -color standard fails to protect all aspects of "aesthetic quality," as required by state law. Though DEQ repeatedly describes 15A N.C. Admin. Code 2B .0211(12) as just a "color standard," the text of the regulation applies much more broadly to "colored or other wastes" that may not injure the "aesthetic quality" of the receiving waterbody.22° Although "aesthetic quality" certainly 215 See Memorandum from U.S. EPA Technology Review Workgroup to N.C. Div. of Water Quality at 6 (Feb. 25, 2008) (recommending that by the end of the 2010 permit term, "the permit should require an effluent target range of 32,000 — 37,000 lbs/day as an annual average"). 216 If necessary, DEQ could reconvene the TRW to assess whether technologies available in 2021 are superior to those assessed in 2008 for purposes of developing current technology -based limits. 217 Draft Fact Sheet at 10-11. 218 Defined as the "minimum average flow for a period of 30 consecutive days that has an average recurrence of once in two years." 15A N.C. Admin. Code 2B .0206(a)(5). 219 Draft Fact Sheet at 10-12; Draft Permit at 5. 220 DEQ's position seems to be that so long as Blue Ridge Paper's colored waste —and colored waste only —is not injuring aesthetic quality, the narrative standards are being satisfied. This misses the point of the narrative standard, which is to broadly protect "aesthetic quality" from "colored and other wastes," not just color. An example helps to illustrate this distinction. Assume Blue Ridge Paper's effluent lacked any color at all, but gave off a rank odor, created objectionable foam, and produced undesirable or nuisance aquatic life, such as swarms of stinging midges. 33 encompasses color, it also covers much more, including, but not limited to: presence of undesirable or nuisance aquatic life, odor, foam, and other floating debris affecting an individual's perception of the river or the palatability of fish.221 DEQ's attempt to boil "aesthetic quality" down to a numeric shift in platinum -cobalt units necessarily fails to address these other aesthetic properties. Second, DEQ also fails to articulate why a monthly average A50 PCU standard is a justifiable interpretation of North Carolina's narrative standard. A monthly average standard could allow the mill to exceed the current 50 PCU in -stream standard for days at a time. Therefore, the new interpretation substantially weakens North Carolina's narrative water quality standards. Nor does it make sense. The color standard is meant to protect the aesthetic qualities of the river but people do not experience aesthetic qualities as a "monthly average" —they experience them in real time on a day-to-day basis. DEQ provides scant support for this significant change. Instead of relying on the text of the administrative code or its permitting experience to support this new interpretation, DEQ largely relies on color studies and standards from other states. Specifically, DEQ points to findings from a color study that established a A50 PCU limit on the Hiwassee River in Tennessee and a color standard of A40 PCU in Maine. These comparisons are inappropriate. The Tennessee PCU standard that DEQ cites was based on a 31-year-old study of a specific watershed in which the study authors warned that "[i]t must be strongly emphasized that the results of this study are extremely site -specific and should not be used to evaluate color limits for other river systems."222 What's more, the current color limit on the Hiwassee is now a daily limit of A40 PCU, as opposed to the monthly average limit of A50 PCU proposed by DEQ here.223 This distinction is hugely important, as a monthly average standard permits Blue Ridge Paper to far exceed the acceptable color differential noted in the Tennessee study —or currently acceptable on the Hiwassee—for multiple days per month, so long as the monthly average color differential does not exceed 50 PCU. DEQ could not argue that this "other" waste product, colored or not, did not injure the aesthetic quality of the Pigeon River in contravention of the State's narrative standards for Class C waters. 221 See U.S. Envtl. Protection Agency, Quality Criteria for Water at 17 (1986) (current recommended standard for aesthetic quality), https://www.epa.gov/sites/production/files/2018-10/documents/quality-criteria-water-1986.pdf. The Draft Permit does state that "[t]here shall be no discharge of floating solids or visible foam in other than trace amounts." Draft Permit at 5. This ambiguous requirement does not address all aspects of aesthetic quality and does not create an enforceable permit standard for those aesthetic properties it does name. 222 A.M. Prestrude & E.L. Laws, Hiwassee River Study at 3 (Apr. 12, 1989) (emphasis added) (Attachment C). The Tennessee study also relied on contemporaneous assessments of apparent color differential between sites to suggest a range of acceptable color addition, rather than monthly average measurements of true color like DEQ. Apparent color measurements assess water color without turbidity removal, while true color is defined as the color measured in the absence of turbidity. 223 Tenn. Dep't of Env't & Conservation, Div. of Water Res., NPDES Permit No. TN0002356 for Resolute FP US Inc. at 5 (June 27, 2018) (Attachment C) (noting the true color downstream of the discharge "must not be increased no more than a daily maximum of 40 standard platinum -cobalt color units, as compared to an upstream control point."). 34 The Maine color standard cited by DEQ is also inapposite for two reasons. First, it requires individual waste dischargers not to increase the color of any water body by more than 20 PCU, not 40 PCU as implied by the Draft Fact Sheet.224 The A40 PCU standard applies to color pollution "caused by all waste discharges to the water body," not just discharges from one polluter like Blue Ridge Paper. Me. Stat. tit. 38 § 414-C(3) (emphasis added). Second, Maine's A40 PCU standard is not a monthly average limit. See id. ("The total increase in color pollution units caused by all waste discharges to the water body must be less than 40 color pollution units."). Thus, like the Hiwassee, increases in color that might violate Maine's PCU standard may be acceptable in the Pigeon for multiple days per month, so long as the monthly average color differential does not exceed 50 PCU. In sum, DEQ must evaluate compliance with the narrative aesthetic -quality standard by assessing aesthetics beyond true -color shifts, consistent with the language and intent of the standard. In addition, DEQ cannot rely on inapposite out-of-state standards to support its monthly average limit. If DEQ insists on citing these out-of-state references, then it too must craft a daily or instantaneous color -differential limit —not a monthly average limit. G. DEQ must justify the use of a mixing zone, specify to which pollutants it applies, and develop spatial limits. A mixing zone is a "limited area or volume of water where initial dilution of a discharge takes place and within which the water quality standards allow certain water quality criteria to be exceeded."225 Mixing zones must be carefully limited in at least three different ways. First, according to EPA, mixing zones generally must be tailored to specific "pollutant[s] of concern."226 Second, mixing zones must be "appropriately limited in size."227 This requirement helps guard against "disproportionately large" zones that "could potentially adversely impact the productivity of the waterbody, and have unanticipated ecological consequences."228 Third, mixing zones should be "located appropriately within the waterbody to provide a continuous zone of passage that protects migrating, free-swimming, and drifting organisms."229 Because mixing zones must provide a continuous zone of passage around the mixing area, they are not appropriate when an effluent —such as temperature —is "known to attract biota."230 "Although most toxic pollutants elicit a neutral or avoidance response ... temperature 224 Compare Me. Stat. tit. 38 § 414-C(3), with Draft Fact Sheet at 12 (suggesting the permit's 450 PCU standard is supported by Maine's "color limit of 40 PCU above the background"). 225 Permit Writers' Manual, supra note 208, at § 6.2.5.2. 226 See id. at § 6.2.5.2 (requiring permit writes to "determine the maximum mixing zone size for the waterbody type, pollutant of concern, and specific criterion being considered"). 227 U.S. Envtl. Protection Agency, Technical Support Document for Water Quality -based Toxics Control at 2.2.2 (1991) [hereinafter "EPA Technical Support Document"], https://www3.epa.gov/npdes/pubs/owm0264.pdf. 228 Id. at § 2.2.2. 229 U.S. Envtl. Protection Agency, Water Quality Standards Handbook ch. 5 at 7 (2014), https://www.epa.gov/sites/ production/files/2014-09/documents/handbook-chapter5.pdf. 23° EPA Technical Support Document, supra note 227, at 10. 35 can be an attractive force and may counter an avoidance response to a particular pollutant."231 As a result, "organisms would tend to stay in the mixing zone rather than passing through or around it," meaning that even if a continuous zone of passage is designated, it "will not protect aquatic life."232 The Draft Permit does not address these limitations and concerns for its new mixing zone. It simply defines the mixing zone as the entire 0.4-mile stretch of river "between the diffuser and the Fiberville Bridge."233 It does not specify which pollutants it applies to, nor does it craft an appropriately sized mixing zone that leaves a designated zone of passage for aquatic organisms.234 It also does not address the problems EPA identified with mixing zones containing thermal effluent. The Draft Permit must be revised to correct these deficiencies. The Draft Permit also must justify why a mixing zone is needed in the first place. Presumably, DEQ crafted the mixing zone for the mill's thermal effluent. But Blue Ridge Paper already applied for and is slated to receive a thermal variance which allows it to exceed North Carolina's water temperature standards. Mixing zones are designed to allow permittees to exceed the same standards in spatially delineated and localized ways that avoid acute impacts —not to allow permittees to exceed the already relaxed standards found in a Section 316(a) variance. In essence, DEQ's Draft Permit would allow Blue Ridge Paper to exceed water quality standards (with the variance) and then exceed that exceedance (with a mixing zone designation). DEQ must explain why this stacked authority to doubly exceed North Carolina's temperature standard is justified. H. DEQ must consider and evaluate any discharges of PFAS by the paper mill. Per- and polyfluoroalkyl substances, or PFAS, are a group of man-made chemicals that have been used in a range of manufacturing industries since the 1940s,235 particularly for their ability to repel water and 01236 The same properties that make them useful in manufacturing applications render them persistent and mobile in the environment and the human body, and their long-lasting effects have earned PFAS a reputation as "forever chemicals." Once discharged, PFAS persist in rivers, streams, and sediment, migrate into groundwater and can enter drinking water supplies. PFAS are now understood to present a danger to human and aquatic health. 231 Id. 232 Id. 233 Draft Permit at 21. 234 Although the BIP study opined that "zone of initial mixing for the Mill's thermal discharge provides a zone of passage along the eastern side of the river for movement of fish and invertebrates," BIP at 60, this biological opinion is not the same as an enforceable, spatially delineated permit condition. 235 U.S. Envtl. Protection Agency, Basic Information on PFAS [hereinafter "Basic PFAS Info"] (Attachment C). 236 Interstate Tech. Regulatory Council, Per- and Polyfluoroalkyl Substances (PFAS), Technical/Regulatory Guidance at Sec. 2.5 (Sept. 2020) [hereinafter "ITRC Guidance"], https://pfas-1.itrcweb.org/wp-content/uploads/ 2020/10/itrc_pfas_techreg_sept_2020_508-1.pdf ("[U]nique physical and chemical properties of PFAS impart oil, water, stain, and soil repellency ... to a range of products."). 36 In recent years, DEQ has gained experience dealing with the prevalence and persistence of PFAS, including through an enforcement action against the Chemours chemical plant on the Bladen-Cumberland county line for discharging GenX237 chemicals into the Cape Fear River system.238 There, DEQ recognized the need to regulate the discharge of PFAS, which it confirmed meet the definition of toxic substances under state law.239 The paper and packaging industry is a known consumer of PFAS, which are used to improve the water-resistant properties of paper products. Neither the paper mill's 2010 permit nor the Draft Permit renewal reflect any consideration of whether the paper mill uses and discharges PFAS into the Pigeon. Blue Ridge Paper's application for a permit renewal, which is itself more than seven years old, is silent on the potential discharge of PFAS.240 DEQ must require the disclosure of any PFAS compounds historically or presently used and potentially discharged by the mill and develop appropriate limits to control the discharges. The best strategy for chemicals that are both toxic and persistent is to require technologies that ensure they not discharged into waterways like the Pigeon in the first place. 1. Pulp and paper mills are a type of industry that uses and discharges PFAS. The pulp and paper industry is a known consumer of PFAS.241 PFAS are incorporated into paper production in multiple ways. They can be added to the pulp to improve the internal water-resistant properties of paper products,242 or added externally as a surface coating for packaging products.243 In addition to incorporation into manufactured products, fluoropolymers are used on equipment and production processes for their non -corrosive properties, from pulp mills and recovery operations to the paper machines themselves.244 EPA recognized in its PFAS 237 GenX refers to a technology used to make high-performance fluoropolymers without the use of perfluorooctanoic acid ("PFOA"). E.g., Basic PFAS Info, supra note 235. 238 N.C. Dep't of Envtl. Quality, GenX Investigation, https://deq.nc.gov/news/key-issues/genx-investigation (last visited Apr. 12, 2021). 239 Amended Complaint, N.C. Dep't of Envtl. Quality v. Chemours, 17 CVS 580, 6-7 (N.C. Super. Ct. 2018) [hereinafter "N.C. DEQ Amended Complaint"]. 24° See Permit Application, supra note 15. 241 See Basic PFAS Info, supra note 235 (listing paper and packaging as known applications); ITRC Guidance, supra note 236, at Table 2-4 (listing documented uses in paper and packaging sectors); Nate Seltenrich, PFAS in Food Packaging: A Hot, Greasy Exposure, 128 Envtl. Health Perspectives 054002-1 (2020) (Attachment C); see also Org. for Econ. Cooperation and Dev., Synthesis Paper on Per -and Polyfluorinated Chemicals (PFCs) (2013) (Attachment C) (listing paper and packaging among major uses of PFAS). 242 See Xenia Trier et al., PFAS in Paper and Board for Food Contact: Options for Risk Management of Poly -and Perfluorinated Substances, (Nordic Council of Ministers 2018) (Attachment C); Gregory Glenn et al., Per -and Polyfluoroalkyl Substances and their Alternatives in Paper Food Packaging, Comprehensive Reviews in Food Sci. and Food Safety (2021) (Attachment C) ("PFAS chemicals tend to coat the surfaces of fibers, including fibers located internally when internal sizing containing PFAS is used such as with molded pulp paper packaging."). 243 See supra note 242; Andrew B. Lindstrom, Mark J. Strynar, and E. Laurence Libelo, Polyfluorinated Compounds: Past, Present, and Future, 45 Envtl. Sci. & Tech. 7954 (2011) (Attachment C). 24a See Leon Magdzinski, Fluoropolymer Use in the Pulp and Paper Industry, CORROSION 99 (1999) (noting "fluoropolymer have become ubiquitous in the pulp and paper industry"); Rainer Lohmann et al., Are Fluoropolymers Really of Low Concern for Human and Environmental Health and Separate from Other PFAS?, 54 Envtl. Sci. & Tech. 12,820 (2020) (Attachment C). 37 Action Plan that "pulp and paper" was among the point -source dischargers "likely to be discharging PFAS in their wastewater" and prioritized the industry for detailed study.245 Because of the multiple applications of PFAS in the pulp and paper industry, DEQ should screen any paper manufacturers with effluent discharges for potential discharges of PFAS.246 Canton's pulp and paper mill is no exception. Multiple PFAS-contamination events across the country are under investigation for their links to paper mills. In Michigan, efforts are ongoing in addressing PFAS contamination near a paper mill in the town of Parchment along the Kalamazoo River. Sampling by the state found high levels of PFAS in the town's water supply and in nearby residential wells. The paper mill site, idled since 2000, included a wastewater treatment system and industrial landfills where the mill disposed of sludge from its treatment plant.247 In Maine, state regulators are investigating PFAS contamination that has spread into residential wells around Fairfield.248 A recently filed lawsuit implicates sludge disposal from the Somerset paper mill in Skowhegan as the source of PFAS.249 The state's investigation began in 2016, when a local dairy farmer learned his cows were producing PFAS-tainted milk after they were pastured on lands where sludge from a paper mill and a municipality were spread as fertilizer.25° In Norway, scientific researchers determined a factory that manufactured PFAS-coated disposable paper products was responsible for contaminating an entire sediment bed throughout Lake Tyrifjorden. Using source tracking methods, particularly fingerprinting contamination from the factory's old landfill sites, the study identified the paper production facility "as a major PFAS 245 U.S. Envtl. Protection Agency, EPA's Per- and Polyfluoroalkyl Substances (PFAS) Action Plan (2019), https:// www. epa. gov/sites/production/files/2019-02/documents/pfas_action_plan_021319_508compliant_ l .pdf. 246 See, e.g., Mich. Dep't of Envtl. Quality, Recommended PFAS Screening & Evaluation Procedure for Industrial Pretreatment Programs (IPPs) (2018) (Attachment C) (identifying paper and packaging manufacturers as possible sources); National Chemicals Working Group of the Heads of EPAs Australia and New Zealand, PFAS National Environmental Management Plan Version 2.0 (2020) (Attachment C) (noting pulp and paper mills use PFAS as internal and external sizing agents and are associated with point sources of contamination). 247 Mich. Dep't of Env't, Great Lakes, and Energy, Michigan PFAS Action Response Team: Kalamazoo County, Parchment, Crown Vantage Property, https://www.michigan.gov/pfasresponse/0,9038,7-365-86511_82704-479889- -,00 html (last updated Apr. 20, 2020). 248 Me. Dep't of Envtl. Protection, Fairfield PFAS Investigation, https://www maine.gov/dep/spills/topics/pfas/ fairfield/index.html (last visited Apr. 12, 2021). 249 Christopher Burns, Maine Paper Mill Hit with Class -Action Lawsuit over Forever Chemical' Contamination, Bangor Daily News (Mar. 8, 2021), https://bangordailynews.com/2021/03/08/news/central-maine/maine-paper-mill- hit-with-class-action-lawsuit-over-forever-chemical-contamination/; John Gardella, PFAS Paper Mill Lawsuit In Maine Exposes Corporate Susceptibility, National Law Review (March 25, 2021), https://www.natlawreview.com/ article/pfas-paper-mill-lawsuit-maine-exposes-corporate-susceptibility. 250 Richard Valdmanis & Joshua Schneyer, The Curious Case of Tainted Milk from a Maine Dairy Farm, Reuters (Mar. 19, 2019), https://www reuters.com/article/us-usa-dairy-chemicals-idUSKCN1R01AJ. 38 hot spot source."251 The contamination persisted in sediment and biota, including fish species like perch, even though surface water samples were near or below detection limits 252 As for the Pigeon, in a forthcoming study, researchers surveying for PFAS across Western North Carolina tested the river below the mill's outfall for several different types of PFAS. They also took surface water samples near some of the mill's old landfills, where wastewater treatment sludge was disposed of historically. That sampling effort detected PFAS in samples near the sludge landfills and just downstream of the mill's wastewater treatment outfall. Given the known use of PFAS by the paper and packaging industry and early indications from these results, DEQ must require a full investigation of the historical and present use of PFAS at the Canton paper mill —including an evaluation of potential discharges to surface water —in this NPDES permit renewal. 2. PFAS are harmful to human health and the environment. PFAS are a threat to human health and the environment. Taking two of the commonly studied PFAS as an example, perfluorooctanoic acid ("PFOA") and perfluorooctane sulfonate ("PFOS") have been found to alter the development of fetuses and infants and cause kidney and testicular cancer, liver malfunction, hypothyroidism, high cholesterol, ulcerative colitis, lower birth weight and size, obesity, decreased immune response to vaccines, reduced hormone levels and delayed puberty.253 In response to these health concerns, EPA has established a lifetime health advisory of 70 parts per trillion ("ppt") for the combined concentrations of PFOA and PFOS in drinking water.254 In June 2018, the Agency for Toxic Substances and Disease Registry released an updated Draft Toxicological Profile for PFOA, PFOS, and other PFAS. The report suggested that many of the chemicals are more harmful than previously thought. For instance, the minimum risk levels, or the amount of a chemical a person can eat, drink, or breathe each day without a detectable risk to health, was determined to be only 11 ppt for PFOA, and 7 ppt for PFOS.255 Epidemiological studies show that many of these same health outcomes result from 251 Hakon A. Langberg et al., Paper Product Production Identified as the Main Source of Per- and Polyfluoroalkyl Substances (PFAS) in a Norwegian Lake: Source and Historic Emission Tracking, 273 Envtl. Pollution 116259 (2021) (Attachment C). 252 See id. 253 Arlene Blum et al., The Madrid Statement on Poly- and Perfluoroalkyl Substances (PFASs), 123 Envtl. Health Perspectives A107 (2015) (Attachment C); U.S. Envtl. Protection Agency, Fact Sheet: PFOA & PFOS Drinking Water Health Advisories at 2 (2016), https://www.epa.gov/sites/production/files/2016-06/documents/drinkingwater healthadvisories pfoa pfos_updated_5.31.16.pdf. 254 U.S. Envtl. Protection Agency, Drinking Water Health Advisories for PFOA and PFOS, https://www.epa.gov/ ground-water-and-drinking-water/drinking-water-health-advisories-pfoa-and-pfos (last updated Feb. 18, 2021). 255 Cape Fear Public Utility Authority (CFPUA), CFPUA Statement on Recently Released DHHS Report (June 21, 2018), https://www.cfpua.org/CivicAlerts.aspx?AID=893&ARC=2004; see also ATSDR, Toxicological Profile for Perfluoroalkyls, Draft for Public Comment (June 2018) [hereinafter "Draft 2018 Toxicological Profile for Perfluoroalkyls"] (Attachment C). 39 exposure to other PFAS.256 Given these harms, several states have acknowledged the dangers of these compounds and have approved drinking water standards for various PFAS at 20 ppt and lower.257 PFAS are also harmful to the environment. They resist breaking down in the environment, can travel long distances, and bio-accumulate in organisms.258 PFAS have been shown to harm fish,259 amphibians,26° mollusks,261 and other aquatic invertebrates262- 256 Draft 2018 Toxicological Profile for Perfluoroalkyls, supra note 255, at 5-6, 25-26. 257 Press Release, Mich. Dep't of Env't, Great Lakes, and Energy, Michigan Adopts Strict PFAS in Drinking Water Standards (July 22, 2020), https://www.michigan.gov/som/0,4669,7-192-47796-534660--,00.html#::text=The%20 Michigan%20Department%20of%20Environment,PFAS%20contamination%20in%20drinking%20water; N.Y. Dep't of Health, NYS Drinking Water Standards for PFOA, PFOS and 1,4-Dioxane (Sept. 2020), https://www. health.ny.gov/environmental/water/drinking/docs/water_supplier_fact_sheet_new_mcls.pdf; Annie Ropeik, N.H. Approves Unprecedented Limits for PFAS Chemicals in Drinking Water, NHPR (July 18, 2019), https://www nhpr. org/post/nh-approves-unprecedented-limits-pfas-chemicals-drinking-water#stream/0; Vt. Dep't of Envtl. Conservation, PFAS & Drinking Water Information Page, https://dec.vermont.gov/water/drinking-water/pfas (last visited Apr. 14, 2021); Press Release, Vt. Agency of Nat. Res., Agency of Natural Resources Initiates Rulemaking Process to Adopt Maximum Contaminant Level for PFAS Compounds, https://anr.vermont.gov/content/agency- natural-resources-initiates-rulemaking-process-adopt-maximum-contaminant-level-pfas (last visited Feb. 24, 2020); N.J. Dep't of Envtl. Protection, Affirming National Leadership Role, New Jersey Publishes Formal Stringent Drinking Water Standards for PFOA and PFOS (June 1, 2020), https://www.nj.gov/dep/newsrel/2020/20_0025 htm; Interstate Tech. Regulatory Council, PFAS Fact Sheets (2020), https://pfas-1.itrcweb.org/wp-content/uploads/2020/ 10/regs508_Aug-2020-Final.pdf 258 Draft 2018 Toxicological Profile for Perfluoroalkyls at 2, 534; see also U.S. Envtl. Protection Agency, Technical Fact Sheet - Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA) at 1, 3 (2017) (Attachment C). 259 Lianguo Chen et al., Multigenerational Disruption of the Thyroid Endocrine System in Marine Medaka after a Life -Cycle Exposure to Perfluorobutanesulfonate, 52 Envtl. Sci. & Tech. 4432 (2018) (Attachment C); Lianguo Chen et al., Perfluorobutanesulfonate Exposure Causes Durable and Transgenerational Dysbiosis of Gut Microbiota in Marine Medaka, 5 Envtl. Sci. & Tech. Letters 731 (2018) (Attachment C); Lianguo Chen et al., Accumulation of Perfluorobutane Sulfonate (PFBS) and Impairment of Visual Function in the Eyes of Marine Medaka After a Life -cycle Exposure, 201 Aquatic Toxicology 1 (2018) (Attachment C); John Charles Rotondo et al., Environmental Doses of Perfluorooctanoic Acid Change the Expression of Genes in Target Tissues of Common carp, 37 Envtl. Toxicology & Chem. 942 (2018) (Attachment C); Carrie E. Jantzen et al., PFOS, PFNA, and PFOA Sub -lethal Exposure to Embryonic Zebrafish have Different Toxicity Profiles in Terms of Morphometrics, Behavior and Gene Expression, 175 Aquatic Toxicology 160 (2016) (Attachment C); A. Hagenaars et al., Structure Activity Relationship Assessment of Four Perfluorinated Chemicals Using a Prolonged Zebrafish Early Life Stage Test, 82 Chemosphere 764 (2011) (Attachment C); Yang Liu et al., The Thyroid -disrupting Effects of Long-term Perfluorononanoate Exposure on Zebrafish (Danio rerio), 20 Ecotoxicology 47 (2011) (Attachment C); Haihua Huang et al., Toxicity, Uptake Kinetics and Behavior Assessment in Zebrafish Embryos Following Exposure to Perfluorooctanesulphonic Acid (PFOS), 98 Aquatic Toxicology 139 (2010) (Attachment C); Yongbing Du et al., Chronic Effects of Water -Borne PFOS Exposure on Growth, Survival and Hepatotoxicity in Zebrafish: A Partial Life -cycle Test, 74 Chemosphere 723 (2009) (Attachment C). 26o Lianguo Chen et al., Multigenerational Disruption, supra note 259; Lianguo Chen et al., Perfluorobutanesulfonate Exposure, supra note 259; Lianguo Chen et al., Accumulation of Perfluorobutane Sulfonate, supra note 259. 261 Changhui Liu & Karina Yew-Hoong Gin, Immunotoxicity in Green Mussels Under Perfluoroalkyl Substance (PFAS) Exposure: Reversible Response and Response Model Development, 37 Envtl. Toxicology & Chem. 1138 (2018); Changhui Liu et al., Oxidative Toxicity of Perfluorinated Chemicals in Green Mussel and Bioaccumulation Factor Dependent Quantitative Structure -Activity Relationship, 33 Envtl. Toxicology & Chem. 2323 (2014). 262 Ruoyo Liang et al., Effects of Perfluorooctane Sulfonate on Immobilization, Heartbeat, Reproductive and Biochemical Performance of Daphnia magna, 168 Chemosphere 1613 (2017) (Attachment C); Magali Houde et al, 40 resulting in developmental and reproductive impacts, behavioral changes, adverse effects to livers, disruption to endocrine systems, and weakened immune systems.263 Despite the growing scientific understanding of the dangers of PFAS to human and environmental health, DEQ does not consider whether the Canton mill is discharging PFAS to the Pigeon River. 3. DEQ must require the mill to disclose any PFAS being discharged to the Pigeon. The Clean Water Act prohibits the discharge of pollutants from a point source, like the mill's wastewater treatment system, to waters of the United States —including the Pigeon River —except in compliance with a NPDES permit issued under Section 402 of the Clean Water Act, among other conditions. See 33 U.S.C. §§ 1311(a), 1342. In order to receive coverage under a NPDES permit, however, a discharger must disclose the pollutants being discharged to permitting authorities.264 Federal regulations governing NPDES permits require applications to include significant detail regarding the nature and characteristics of expected discharges. See 40 C.F.R. § 122.21(g). A general disclosure of wastes, operations, and processes is not sufficient to gain access to any permit shield.265 Nothing excepts PFAS from this requirement, and these requirements apply to state -issued permits under approved delegated programs. See 40 C.F.R. § 122.21 (a)(2)(iv). Indeed, DEQ has acknowledged that disclosure of toxic pollutants, including PFAS, is required by the Clean Water Act and state water quality laws.266 In December 2014, the mill submitted with its application a characterization of pollutants likely to be discharged on Form 2C. Nowhere does this disclosure alert DEQ to a potential discharge of any chemicals classified as PFAS. Consequently, DEQ has not assessed the need for technology -based limits to control the discharge, much less whether more controls are needed to protect water quality. Moreover, the public has no information about the discharge of PFAS by the mill. To the extent the mill has excluded PFAS compounds from its effluent data, the mill has not complied with NPDES permitting application requirements. Any discharge of PFAS is and would continue to be a violation of the Clean Water Act. Endocrine -disruption Potential of Perfluoroethylcyclohexane Sulfonate (PFECHS) in Chronically Exposed Daphnia magna, 218 Envtl. Pollution 950 (2016) (Attachment C); Kyunghee Ji et al., Toxicity of Perfluorooctane Sulfonic Acid and Perfluorooctanoic Acid on Freshwater Macroinvertebrates (Daphnia Magna and Moina Macrocopa) and Fish (Oryzias Latipes), 27 Envtl. Toxicology & Chem. 2159 (2008); Michelle M. MacDonald et al., Toxicity of Perfluorooctane Sulfonic Acid and Perfluorooctanoic Acid to Chironomus tentans, 23 Envtl. Toxicology & Chem. 2116 (2004). 263 See supra notes 259-262. 26a S. Appalachian Mountain Stewards v. A & G Coal Corp., 758 F.3d 560 (4th Cir. 2014) (holding a mining company's failure to meet its disclosure obligations rendered it ineligible for permit shield under the Clean Water Act); Piney Run Preservation Ass 'n v. Cty. Comm'rs of Carroll Cty, 268 F.3d 255, 268 (4th Cir. 2001). 265 S. Appalachian Mountain Stewards, 758 F.3d at 563. 266 N.C. DEQ Amended Complaint at 6-7 (citing 33 U.S.C. § 1342(k), Piney Run Preservation Ass 'n, 268 F.3d at 265). 41 4. DEQ must develop appropriate effluent limits for PFAS discharges. Once DEQ requires the disclosure of PFAS compounds, DEQ must then develop limits that apply best available technology to control and eliminate any PFAS in the discharge. As discussed previously, the Clean Water Act requires permitting agencies to, at the very least, incorporate technology -based effluent limitations for discharged pollutants, even if those limits are stricter than necessary to meet water quality standards. If technology -based standards are insufficient to meet water quality standards, then water -quality -based effluent limits must also be developed to ensure those standards are met. See 33 U.S.C. § 1342(a)(1)(A); 40 C.F.R. § 122.43(a). Where, as here, the outdated ELG for the pulp and paper category does not address the discharge of a category of pollutants like PFAS, technology -based limits must be developed on a case -by -case basis using BPJ. 40 C.F.R. § 125.3(c)(3). North Carolina rules, in the absence of a promulgated ELG, direct staff to calculate a limit using EPA development documents and other available information. See 15A N.C. Admin. Code 02B .0406(b)(3). In this case, DEQ must consider the feasibility of the Canton paper mill using existing treatment technologies, such as granular activated carbon, to eliminate discharges of PFAS. DEQ is well aware of the effectiveness of granular activated carbon treatment at removing PFAS based on pilot studies conducted by Chemours. The results show that granular activated carbon can remove more than 99% of all PFAS tested.267 Almost all of those PFAS were reduced to levels so low that they were not detectable in the discharge.268 DEQ's analysis does not necessarily stop at technology -based effluent limits, however. DEQ also must ensure that water quality standards will not be violated. PFAS are known to harm human and aquatic health, and their discharge threatens to violate multiple water quality standards. For instance, the state toxic substances standard requires that: "the concentration of toxic substances, either alone or in combination with other wastes, in surface waters shall not render waters injurious to aquatic life or wildlife, recreational activities, public health, or impair the waters for any designated uses."269 DEQ in its lawsuit against Chemours recognized that PFAS "meet the definition of `toxic substance[s] "' under state law.27° 267 Parsons, Engineering Report: Old Outfall 002 GAC Pilot Study Results Addendum, Chemours Fayetteville Plant (2020), https://www.chemours.com/en/-/media/files/corporate/old-outfall-2-gac-pilot-addendum final.pdf. 268 Id. at App'x B. Similarly, the Cape Fear Public Utility Authority is installing granular activated carbon at its Sweeney Water Treatment Plant and implementing a process that captures PFAS on the carbon filters and replaces those filters as needed. See Cape Fear Public Utility Authority, Sweeney Treatment Enhancements Project, https://www.cfpua.org/775/Sweeney-Treatment-Enhancements-Project (last visited Apr. 14, 2021); see also Jim Ware, CFPUA Moving Forward with $46M GenX Filtration System, StarNews (Jun. 11, 2019), https://www. starnewsonline. com/news/20190611 /c fpua-moving-forward-with-46m-genx-filtration-system. 269 15A N.C. Admin. Code 2B .0208(a). 270 N.C. DEQ Amended Complaint at 32 (stating that "the process wastewater from [Chemours'] Fluoromonomers/Nafion® Membrane Manufacturing Area contains and has contained substances or combinations of substances which meet the definition of `toxic substance' set forth in 15A N.C.A.C. 2B .0202," referring to GenX and other PFAS). 42 In addition to ensuring compliance with this rule on the Pigeon, DEQ must also ensure that PFAS discharges do not violate the state's aesthetic standard, which prohibits wastes that "render the waters injurious to public health, secondary recreation, or to aquatic life and wildlife, or adversely affect the palatability of fish, aesthetic quality, or impair the waters for any designated uses." 15A N.C. Admin. Code 02B .0211(12) (Class C waters). To ensure compliance with these standards, DEQ must require Blue Ridge Paper to characterize any PFAS being discharged in the Canton mill's effluent, so that DEQ can evaluate the need for permit conditions imposing technology -based and water -quality -based effluent limits, along with frequent monitoring. Without this disclosure and analysis, DEQ cannot ensure compliance with water quality standards or lawfully issue an NPDES permit. See 33 U.S.C. § 1311(b)(1)(C); 15A N.C. Admin. Code 2H.0112 (c) (final action on NPDES permit applications). I. The Draft Permit overlooks multiple additional discharges of pollution seeping from sludge disposal sites into the Pigeon River. The Draft Permit overlooks multiple additional sources of polluted discharges from the mill's previous sludge disposal that are currently reaching the Pigeon River. This omission undermines the reasonable potential analysis that forms the basis of the water -quality -based effluent limitations in the permit and contravenes existing conditions in the permit. Blue Ridge Paper's permitted outfall is not the only location where pollution from the mill's operations are discharged into the Pigeon. For decades, the mill has disposed of sludge from its wastewater treatment systems into several landfills along the river. That sludge contains toxic pollutants from the facility's historical operations, ranging from coal ash to potential forever chemicals likely used by the mill as described above. The Draft Permit references only the mill's newest landfill. That landfill is lined and contains a system to collect contaminated leachate, which is sent back to the wastewater treatment system rather than discharged directly into the river. Crucially, that is not the only industrial landfill that the mill has used to store its waste, nor is it the only landfill leaking pollutants. Multiple additional unlined landfills are strung along the banks of the Pigeon River. Several of these landfills are visible on DEQ's inactive hazardous waste mapping tool as Champion Landfill Nos. 1, 2 and 3.271 Their closure permits do not authorize polluted seeps to the Pigeon River. Nonetheless, multiple landfills have seeps actively flowing to the Pigeon, into the same stretch of the river that receives the mill's effluent discharges from its wastewater treatment system. Recent surface water sampling by the French Broad Riverkeeper confirms that seeps from the landfill sites are polluting the Pigeon with a range of contaminants. In June 2019, the 271 N.C. Dep't of Envtl. Quality, Inactive Hazardous Sites Map, https://deq.nc.gov/about/divisions/waste- management/waste-management-rules-data/waste-management-gis-maps/ihs-map-viewer (last visited Apr. 14, 2021) 43 French Broad Riverkeeper found that landfill seeps are discharging pollutants typical of contamination from coal ash, which is among the waste landfilled at the unlined sites. Examples of Seeps from Canton Paper Landfill No. 1.272 The samples from seeps at Landfill No. 1 contained elevated levels of boron, cobalt, iron, molybdenum, strontium, and zinc.273 Sampling from a creek draining from the edge of Landfill No. 2 included elevated levels of cadmium and strontium. Levels of boron, cadmium, and cobalt exceeded North Carolina in -stream target values for surface waters; iron and manganese exceeded EPA's recommended water quality criteria. Several of these pollutants are indicators of coal ash migrating through seeps toward the river.274 These seeps probably harbor more than just pollutants associated with coal -ash waste. Indeed, a forthcoming study also found PFAS compounds in samples from landfill seepage. Although not disclosed by the mill, PFAS were evidently used in the mill's processes 272 These seep locations are at approximately 35.5437617, -82.86398329999999 and 35.54336450000002, - 82.863597 (flow from toe drain). 273 North Carolina's surface water standards are available at https://deq nc.gov/documents/nc-stdstable-06102019. Zinc and cadmium are subject to hardness dependent numeric standards. 274 See, e.g., Federal Coal Combustion Residuals Rule, 40 C.F.R. Appendices III and IV to Part 257 (listing boron among detection constituents and cadmium, cobalt and molybdenum as monitoring constituents); Jennifer S. Harkness, Barry Sulkin, & Avner Vengosh, Evidence for Coal Ash Ponds Leaking in the Southeastern United States, 50 Envtl. Sci. & Tech. 6583 (2016) (Attachment C) (discussing boron and strontium). 44 historically, disposed of along with other sludge waste, and are now discharged into the Pigeon River. DEQ has apparently made no attempt to locate, characterize, or eliminate these seep discharges. Unauthorized discharges of pollutants through points sources to the Pigeon River are standalone violations of the Clean Water Act. The scope of the problem, however, is not limited to surface water. Buried waste also contaminates groundwater, which migrates offsite and hydrologically connects to the river. Thus, even more pollution is likely reaching the river through groundwater migrating through the buried waste in unlined landfills. DEQ must require the mill to determine the nature and extent of groundwater contamination emanating from these unlined industrial landfills, particularly as several residences are located near the old landfill sites. Although separate regulatory enforcement is necessary, the discharge of pollution from prior wastewater sludge disposal and its effects on the water quality of the Pigeon River are also relevant to permit conditions in this NPDES permit. 1. Duty to Mitigate and Removed Substances Conditions. In addition to complying with individual permit conditions, Blue Ridge Paper must ensure its wastewater treatment systems and sludge disposal practices comply with the NPDES Permit standard conditions. The Duty to Mitigate provision requires Blue Ridge Paper to minimize or prevent any "sludge use or disposal in violation of this permit with a reasonable likelihood of adversely affecting human health or the environment."275 To the extent Blue Ridge Paper discharges undisclosed PFAS from its wastewater into the Pigeon, in violation of its permit, or allows pollution from contaminated sludge to migrate to the Pigeon, the mill fails to "take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of [its NPDES permits] with a reasonable likelihood of adversely affecting human health or the environment," as required by the Duty to Mitigate. The Removed Substances provision also prohibits pollution from entering the Pigeon from sludge disposal practices: "Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters shall be utilized/disposed of ... in a manner such as to prevent any pollutant from such materials from entering waters of the State."276 The Removed Substances provision ensures that "measures shall be taken to assure that pollutants [and] materials removed from the process water and waste streams will be retained in storage areas and not discharged or released."277 This provision aims to "ensure the integrity" of such systems so that pollution does not escape into the environment.278 Allowing coal -ash pollutants, 275 See N.C. Dep't of Envtl. Quality, NPDES Permit Standard Conditions at § B(2) (2011), https://files.nc.gov/ ncdeq/Surface%20W ater%20Protection/NPDES/GUIDANCEBoilerplate-11-09-2011-2.pdf. 276 See id. at § C(6). 277 In re: 539 Alaska Placer Miners, 1085-06-14-402C, 1990 WL 324284, at *8 (EPA Mar. 26, 1990); see also 40 C.F.R. § 440.148(c). 278 Yadkin Riverkeeper, Inc. v. Duke Energy Carolinas, LLC, 141 F. Supp. 3d 428, 446-47 (M.D.N.C. 2015) (interpreting the Removed Substances provision in context of coal -ash disposal at the Buck Steam Station). 45 PFAS, or other pollutants to escape areas where sludge from the mill's wastewater treatment system has been disposed of and enter the Pigeon River violates the Removed Substances provision. 2. Factoring downstream pollution concentrations into water -quality -based effluent limitations. The Draft Permit must consider these additional sources of pollution to the Pigeon — which are connected to the mill's waste disposal practices —in developing appropriate permit limits on pollution from the mill's wastewater outfall. The minimal information provided by the Draft Fact Sheet about the reasonable potential analysis conducted to determine the need for water -quality -based effluent limitations does not indicate what conditions were assumed to be present in the Pigeon River. As shown above, leaking landfills immediately downstream of the mill's outfall are adding pollution to the same stretch of the Pigeon. In addition to seeps, it is likely that far more pollution is entering the Pigeon through hydrologically connected groundwater, which migrates through these waste sites. Although little information about DEQ's reasonable potential analysis is available in the Draft Fact Sheet, nowhere does DEQ indicate that it has considered these additional polluted discharges in its evaluation of the potential for Blue Ridge Paper's discharge to violate water quality standards. To be clear, the outfall is not the only source of Blue Ridge Paper's polluted discharges to the Pigeon River, and any analysis that assumes so is in error. EPA requires consideration of downstream conditions when issuing an NPDES permit. Specifically, before calculating a water -quality -based effluent limitation, the permit writer first determines the waste load allocation ("WLA") for the point -source discharge.279 "The WLA is the loading or concentration of pollutant that the specific point source may discharge while still allowing the water quality criterion to be attained downstream of that discharge."280 The WLA calculation accounts for "contributions from other point and nonpoint sources."281 The Draft Fact Sheet reflects no attempt to develop a WLA based on pollutant contributions of leaking landfill sites immediately downstream of the mill. This omission undercuts the entire reasonable potential analysis. In reevaluating the need for water -quality -based effluent limitations, DEQ should apply the NPDES guidance. DEQ must document this process in a revised fact sheet that provides "the public a transparent, reproducible, and defensible description of how the permit writer properly derived [water -quality -based effluent limitations] for the NPDES permit."282 J. The Draft Permit relies on outdated data to support its findings. If approved, DEQ's Draft Permit will allow Blue Ridge Paper to discharge pollutants into the Pigeon River until 2026. If DEQ continues its practice of administratively extending this 279 Permit Writers' Manual, supra note 208, at § 6.4.1.5. 280 Id. (emphasis added). 281 Id. (describing use of a model where a WLA "is needed to address the nearfield effects of a discharge on water quality criteria"). 282 Id. 46 permit —as it has for the past two permit cycles —it could govern for even longer. Yet much of the data that DEQ relies on to support its findings and conditions in the Draft Permit is already outdated by a full permit term or more. For example: • 2014 BIP study: The study DEQ relies on to support Blue Ridge Paper's continued thermal variance is already seven years old. The data within the study is even older — for instance, biotic sampling for the BIP ended in September of 2012, over 100 months ago. • 2008-2013 dioxin sampling: As described in more detail above, there has been no fish -tissue dioxin sampling conducted in the Pigeon River since 2014. Even though the 2014 sampling found elevated levels of dioxin in common carp fillets, the Draft Permit relies on even older sampling efforts from 2008-2013 to justify reducing the frequency of fish -tissue sampling to once per permit period.283 • 2008-2013 notices of violation: The Draft Fact Sheet discloses that DEQ issued eighteen notices of violation ("NOVs") to Blue Ridge Paper from September 2008 to August 2013.284 DEQ does not disclose that it has issued NOVs for numerous fecal coliform violations and other monitoring violations during the seven following years as well. • 2008 Technology Review Workgroup: As noted above, the Draft Fact Sheet suggests that the Draft Permit limits on color are appropriate because they "were established in accordance with the Technology Review Workgroup (TRW) recommendations for the 2010 permit renewal."285 However, these recommendations were based on color -reduction technologies available in 2008—nearly thirteen years ago. DEQ does not consider or address whether these technologies or their costs have changed in the interim. • 2014-2018 dissolved oxygen review: In its discussion of dissolved oxygen levels in the Pigeon, the Draft Fact Sheet notes that daily average dissolved oxygen concentrations below the mill did not drop below North Carolina's water quality standard (5.0 mg/L) between 2014 and 2018. DEQ does not disclose whether this standard has been met over the past three years, nor does it relate whether the instantaneous dissolved oxygen standard (4.0 mg/L) has been met. • 2014 Permit Application: Blue Ridge Paper applied for a permit renewal in 2014. Instead of developing a new permit, DEQ administratively extended the 2010 permit for five years. Now DEQ intends to grant the 2014 renewal application —in 2021. Because the application is now almost seven years old, DEQ must elicit current data on the mill's discharge via an updated Form 2C. This is especially pertinent now that the nature of the mill's discharge is changing. Specifically, DEQ's Draft Permit recommends approving Blue Ridge Paper's request to increase its flow limit from 283 Draft Fact Sheet at 3-4. 284 Id. at 6. 285 Id. 47 29.9 MGD to 34.0 MGD286—an increase of nearly 14%. Part of this increase will be used to process scrubber waste or treat additional landfill leachate,287 and the vast majority (70.7%) will be used in the mill's paper processing.288 Because the Draft Permit allows the discharge of 4.1 million more gallons of effluent per day, DEQ must require Blue Ridge Paper to provide an updated Form 2C disclosing the impacts this increased flow usage will have on effluent levels. See 40 C.F.R. § 122.44 (requiring NPDES permit conditions be based on "existing controls on point and nonpoint sources of pollution" (emphasis added)); 15A N.C. Admin. Code 2H .0143(25) (incorporating 40 C.F.R. § 122.44 by reference). Because DEQ is relying on information that is up to thirteen years old, it cannot guarantee that its Draft Permit "maintain[s] or enhance[s] the chemical, physical, biological and radiological integrity" of the Pigeon River. N.C. Gen. Stat. § 143-215(b). DEQ must require submission of an updated Form 2C, disclose all NOVs, cease reliance on outdated —and superseded —dioxin test results, ask to reconvene the Technology Review Workgroup, disclose both recent and instantaneous dissolved oxygen data, and require the preparation of an updated BIP study. K. DEQ must impose stricter controls to mitigate the mill's repeated fecal coliform violations. Blue Ridge not only treats the mill's industrial waste, but also the Town of Canton's sewage waste. With that comes the responsibility to ensure bacteria like fecal coliform meet water quality standards and pose no health risk. See 15A N.C. Admin. Code 02B .0211(7) (Class C waters). Fecal coliform is an indicator used to detect waterborne pathogens in streams and rivers.289 Finding high levels of fecal coliform in waterbodies suggests that harmful bacteria and viruses might also be present, including those causing typhoid fever, gastroenteritis, cholera, and hepatitis A.290 DEQ issued fourteen violations to the mill for exceeding the permit's fecal coliform limit between 2008 and 2013,291 and around a dozen more violations have been issued in the years since.292 These repeated violations exceed permit limits and present a health risk to recreational users of the Pigeon River. While the Draft Fact Sheet acknowledges the repeated violations, neither it nor the Draft Permit indicates what additional measures will be taken to curb these violations. Because DEQ 286 Id. at 7-8. 287 Id. at 7-8. 288 See id. 289 N.C. Dep't of Env't & Nat. Res., Supplemental Guide to North Carolina's Basinwide Planning at 149 (2008), https: //files. nc. gov/ncdeq/W ater%20Quality/Planning/BPU/BPU/Supplemental%20Guide/Supplemental%20Guide %202008.pdf. 2" Id. at 152. 291 Draft Fact Sheet at 6. 292 See N.C. Dep't of Envtl' Quality, Div. of Water Res. Laserfiche folder for NC0000272, https://edocs.deq nc.gov/ WaterResources/Browse.aspx?id=537199&dbid=0&repo=WaterResources&cr=1. 48 lacks a strategy to assure compliance with the fecal coliform standard, it risks perpetuating the same permit violations going forward. This outcome is foreclosed by federal and state law. Under the Clean Water Act, North Carolina cannot issue an NPDES permit that will contribute to violations of water quality standards. See 33 U.S.C. § 1311(b)(1)(C). State regulations impose a similar requirement: "No permit may be issued when the imposition of conditions cannot reasonably ensure compliance with applicable water quality standards and regulations of all affected states." 15A N.C. Admin. Code 2H .0112(c) (final action on NPDES permit applications). Blue Ridge Paper's recent history of non-compliance requires DEQ to reevaluate whether the existing permit terms are sufficiently stringent and to develop additional measures that will assure compliance with fecal coliform standards. L. DEQ must not relax its chloroform limits for internal outfalls 002 and 003. DEQ proposes increasing the mill's chloroform limits for internal outfalls 002 and 003.293 The reason for this "recalculat[ion]," according to the Draft Fact Sheet, is to bring these internal limits in line with EPA's promulgated effluent guidelines for the Pulp, Paper, and Paperboard Point Source Category.294 However, backsliding on effluent limitations like these is specifically foreclosed by the Clean Water Act and its implementing regulations. 33 U.S.C. 1342(o); 40 C.F.R. § 122.44(1); 15A N.C. Admin. Code 02B .0408(25) (incorporating § 122.44 by reference). Relaxing these limits also makes no sense when Blue Ridge Paper has been successfully meeting these limits for years, if not decades.295 In general, whenever an NPDES permit is reissued, the effluent limitations of the new permit "must be at least as stringent as the final effluent limitations" of the previous permit. 40 C.F.R. § 122.44(1)(1). Even if EPA promulgates or revises its effluent guidelines subsequent to issuing the previous permit, the new permit still may not "contain effluent limitations which are less stringent than the comparable effluent limitations in the previous permit" unless certain limited exceptions apply. Id. § 122.44(1)(2). The Draft Fact Sheet does not identify any exceptions that might apply, or otherwise explain why increasing chloroform limits does not constitute illegal backsliding. Nor does DEQ explain whether these changes will increase the amount of chloroform reaching the Pigeon via outfall 001. DEQ must either fully explain why increasing chloroform limits does not violate the Clean Water Act or require the mill to maintain the limits it has already been meeting for years. 293 Limits for internal outfall 002 are proposed to increase from a daily maximum of 8.6 lbs/day and a monthly average maximum of 5.1 lbs/day to a daily limit of 10.5 lbs/day and a monthly average limit of 6.27 lbs/day. Compare 2010 Permit, supra note 213, at 6, with Draft Permit at 6. Likewise, limits for internal outfall 003 are proposed to increase from a daily maximum of 10.9 lbs/day and a monthly average maximum of 6.5 lbs/day to a daily limit of 12.5 lbs/day and a monthly average limit of 7.49 lbs/day. Compare 2010 Permit, supra note 213, at 7, with Draft Permit at 8. 294 Draft Fact Sheet at 9. 295 For example, the effluent limits for internal outfall 002 have remained unchanged since at least 2001. See N.C. Dep't of Env't & Nat. Res., NPDES Permit No. NC0000272 Blue Ridge Paper Produces Inc. at 4 (Nov. 15, 2001). 49 M. The Draft Permit must include a reference to an oxygen -injection facility 0.9 miles downstream of the mill. In North Carolina, Class C waters like the Pigeon River below the mill must maintain an instantaneous in -stream dissolved oxygen of at least 4 mg/L, and a daily average of 5.0 mg/L. 15A N.C. Admin. Code 02B .0211(6). For many years, DEQ has allowed Blue Ridge Paper to meet this standard by employing sidestream oxygen -injection facilities.296 The Draft Fact Sheet states that these "oxygen injection facilities will continue to be maintained at the effluent, 0.9, and 2.1 miles downstream."297 However, the Draft Permit only requires Blue Ridge Paper to operate "oxygen injection facilities at the outfall structure, [and] at 2.1 miles downstream of the discharge."298 Given the language in the Draft Fact Sheet, the Draft Permit's failure to list an injection station at 0.9 miles downstream is likely an oversight. DEQ should add a reference to this site back into the permit to ensure that Blue Ridge Paper will maintain the water quality standard for dissolved oxygen in the Pigeon downstream of the discharge. III. Conclusion DEQ's Draft Permit violates federal and state law, and does not do enough to protect and restore the Pigeon River. DEQ must withdraw and revise the Draft Permit to correct the deficiencies detailed above before resubmitting the revised draft permit for public comment. Thank you for your consideration. Please contact Patrick Hunter, or Spencer Scheidt, at (828) 258-2023 or phunter@selcnc.org and sscheidt@selcnc.org if you have any questions regarding these comments. 296 Draft Fact Sheet at 5-6. 297 Id. at 6. 298 Draft Permit at 18. Sincerely, Spencer Scheidt Associate Attorney 7;ze_„ ,#,__- , Patrick Hunter Senior Attorney 50 Susannah Knox Senior Attorney cc — via email: Lauren Petter, EPA, Petter.Lauren@epa.gov Attachment A Partial Settlement Agreement and Joint Stipulation to Stay, NC OAH 10 EHR 4341, April 24, 2012 State of gs ortfi Carolina Department of justice ROY COOPER 42 North French Broad Avenue Attomey General Asheville, NC 28801 Ms. Kim Hausen Chief Hearings Clerk Office of Administrative Hearings 6714 Mail Service Center Raleigh, North Carolina 27699-6714 24 April 2012 Western Office Phone: (828) 251-6083 Fax: (828) 251-6338 By electronic transmission and first-class mail oah.clerks@ncmail.net RE: Cocke County TN v. DENR, DWQ, and Blue Ridge Paper Products, Inc. OAH File No 10 EHR 4341 Cocke County TN v. EMC, NPDES Committee and Blue Ridge Paper Products, Inc. OAH File No. 10 EHR 4982 (Consolidated for hearing) Dear Ms. Hausen: I have enclosed the original and two copies of a document for filing in the above -referenced contested case. Please return a file -stamped copy to me in the enclosed self-addressed envelope. Thank you for your help in this matter. Sincerely, Sueanna P. Sumpter Assistant Attorney General /SPS Enclosures xc: The Honorable J. Randall May (via e-mail: betty.owens(cr�oah.nc.gov) Following via e-mail and first-class mail: Julia F. Youngman, Esq. Amelia Y. Burnette, Esq. Austin D. Gerken, Jr., Esq. Becky Jaffe, Esq. William Clarke, Esq. Dick Krieg, Esq. STATE OF NORTH CAROLINA IN THE OFFICE OF COUNTY OF HAYWOOD ADMINISTRATIVE HEARINGS Cocke County, Tennessee, et al., ) Petitioners, ) v. ) ) North Carolina Department of Environment ) and Natural Resources — Division of Water ) Quality, ) Respondent, ) ) and ) ) Blue Ridge Paper Products Inc. ) Respondent -Intervenor. ) ) STATE OF NORTH CAROLINA COUNTY OF WAKE Cocke County, Tennessee, et al., ) Petitioners, ) v. ) ) Environmental Management Commission ) acting by and through its NPDES Committee, ) and the NPDES Committee, ) Respondents, ) ) and ) ) Blue Ridge Paper Products Inc., ) Respondent -Intervenor. ) ) 10 EHR 4341 IN THE OFFICE OF ADMINISTRATIVE HEARINGS 10 EHI2 4982 Partial Settlement Agreement and Joint Stipulation to Stay Respondents North Carolina Division of Water Quality (the "Division"), North Carolina Environmental Management Commission acting by and through its NPDES Committee, and the NPDES Committee (the "NPDES Committee"), and Petitioners Cocke County, Tennessee, Clean Water Expected for East Tennessee, Clean Water for North Carolina, the Tennessee Chapter of the Sierra Club, Tennessee Scenic Rivers Association, and the Western North Carolina Alliance (collectively, the "Petitioners"), and Respondent -Intervenor Blue Ridge Paper Products, Inc., hereby enter into this Partial Settlement Agreement pursuant to N.C. Gen. Stat. § 150B-31(b). This matter arose out of the Petitioners' filing of a Petition for Contested Case Hearing (10 EHR 4341) on July 23, 2010, challenging the Division's issuance of NPDES Permit No. NC0000272 (the "Permit") to Respondent -Intervenor. The issues raised by Petitioners in their contested case against the Division relate to the Permit limits on Blue Ridge Paper's discharge into the Pigeon River. Petitioners filed a second Petition for Contested Case Hearing (10 EHR 4982) against the NPDES Committee on August 13, 2010, challenging its decision to grant a variance to Respondent -Intervenor from North Carolina's water quality standard for color. Without any contested case hearing, and without any admissions of liability, the Division, the NPDES Committee, Petitioners, and Respondent -Intervenor have reached the following Partial Settlement Agreement: A. Temperature: 1. Subject to Environmental Protection Agency ("EPA") approval, DWQ will modify the Permit so that the first sentence of Condition A. (1.) footnote 11 of the Permit reads as follows: "11. The weekly average instream temperature measured at a point 0.4 miles downstream of the discharge location shall not exceed 32°C during the months of July, August, and September and shall not exceed 29°C during the months October through June." 2. Respondent -Intervenor will prepare an updated Balanced Indigenous Population study ("BIP study") of the Pigeon River in accordance with the requirements of Section 316(a) of the Clean Water Act. The BIP Study will, among other study requirements: (1) survey mussels/shellfish as targeted species in the mainstem of the Pigeon River; (2) include detailed studies of macro -invertebrates and shellfish; (3) conduct thermal sampling at 20 locations in the Pigeon River and 2 locations in a reference river; and (4) intensively survey for fish, macroinvertebrates/shellfish, and periphyton in accordance with standardized sampling protocols, and in some cases, sampling protocols developed in coordination with EPA and DWQ. Surveying will be done at 20 Pigeon River locations and 2 locations in a reference river. 3. Respondent -Intervenor will use its best efforts to submit a final BIP study report to the Division and to the EPA for review before January 1, 2014, unless river conditions in 2012 do not allow safe access for field sampling. Respondent - Intervenor will serve the completed study report on counsel for Petitioners at the same time it submits the final study to the Division and EPA for review. Respondent- 2 Intervenor will notify counsel for Petitioners if delays in data collection planned for 2012 and early 2013 render submission of the study by January 1, 2014 not feasible. 4. Respondent -Intervenor has submitted a proposed 316(a) study plan to the Division and to EPA and provided a copy to counsel for Petitioners. 5. In reliance on these commitments, Petitioners agree to voluntarily dismiss (in accordance with section D, below) their claims relating to the current temperature limits in the Permit. B. Color 1. Respondent -Intervenor will, in accordance with the requirements of the 2010 Color Variance, fund a site -specific study of color in the Pigeon River in North Carolina. The study protocol shall be approved by DWQ and will generally be as outlined in EPA's letter of February 22, 2010 to DWQ. Respondent -Intervenor has submitted a draft protocol for such a study to the Respondents and to the EPA for comment. Respondent -Intervenor will exercise best efforts to complete the study and submit a report to Respondents before January 1, 2013. Respondent -Intervenor will serve a copy of the final study protocol and -completed report on counsel for Petitioners at the same time it submits the report to Respondents. 2. Because the color perception study currently being developed by Respondent - Intervenor may have bearing on the positions of the parties in these consolidated contested cases, the parties jointly agree and stipulate to a stay of the hearing in these consolidated contested cases until January 30, 2013. The parties jointly agree and stipulate to submit a joint status report to OAH on or before January 30, 2013, reporting on the status of the color perception study, whether a continued stay of this matter is required to allow Respondents and the EPA to review the study, and the appropriate scheduling of a hearing to resolve these contested cases, if necessary. C. Within three days of execution of this Partial Settlement Agreement, Respondents shall submit a draft revised NPDES permit reflecting the terms of this agreement to the EPA for approval of its terms. The parties understand and stipulate that approval of the draft revised permit does not bind EPA or any party to approval of any of the future studies, or plans or protocols for future studies contemplated by this agreement. Furthermore, the parties understand and stipulate that, by entering into this Agreement, no party is bound 3 to approve any of the future studies, or plans or protocols for future studies contemplated by this agreement. D. Within ten days of being notified that EPA has approved a draft revised NPDES permit reflecting the terms of Partial Settlement Agreement, Petitioners shall file a Notice of Settlement and Partial Dismissal with the Office of Administrative Hearings ("OAH") for dismissal of only their temperature claims against the Permit in their Contested Case, Cocke County, Tennessee et al. v. NC DENR, Division of Water Quality, 10 EHR 4341, with prejudice, with each party to bear its own costs and attorney's fees. E. If the draft revised NPDES permit is disapproved by EPA such that any provision of this agreement cannot be implemented, the agreement shall be rendered void and the parties agree to negotiate in good faith to revise this agreement. F. The Parties agree to cooperate fully in executing any and all supplementary documents and in taking all additional actions that may be necessary to give full force and effect to the terms of this Partial Settlement Agreement. G. It is understood and agreed that this Partial Settlement Agreement is not to be construed as an admission by any party to this agreement and that this agreement is a compromise of disputed claims. H. This Partial Settlement Agreement may not be modified, altered or changed except in a written document that is signed by all Parties and that makes specific reference to this Partial Settlement Agreement. The Parties represent that any necessary corporate and governmental formalities have been complied with for purposes of signing and entering into this Partial Settlement Agreement. The persons executing this agreement represent and warrant that they have full authority to sign this agreement on behalf of the Parties for which they are acting. J. This Partial Settlement Agreement shall be binding upon the Parties, their successors and assigns. 4 This thay of , 2012. Austin D. Gerken Jr., N.C. State Bar No. 32689 Amelia Y. Burnette, N.C. State Bar No. 33845 Rebecca Jaffe, N.C. State Bar No. 40726 Southern Environmental Law Center 22 S. Pack Square, Suite 700 Asheville, NC 28801 828-258-2023 Julia F. Youngman, N.C. State Bar No. 21320 Southern Environmental Law Center 601 W. Rosemary Street, Suite 220 Chapel Hill, NC 27516 919-967-1450 On behalf of Cocke County, Tennessee, Clean Water Expected for East Tennessee, Clean Water for North Carolina, the Tennessee Chapter of the Sierra Club, Tennessee Scenic Rivers Association, and the Western North Carolina Alliance Sueanna Sumpter, Esq. Assistant Attorney General N.C. Department ofJustice 42 N. French Broad Ave. Asheville, NC 28801 828-251-6083 On behalf of North Carolina Division of Water Quality ar, casse, Esq. Spe i eputy Attorney General North Carolina Department ofJustice P.O. Box 629 Raleigh, NC 27602 919-716-6962 On behalf of North Carolina Environmental Management Commission acting by and through its NPDES Committee 5 L William Clarke Roberts & Stevens, P.A. PO Box 7647 Asheville, NC 28802 828-252-6600 ("2,,, Richard W. Krieg, Esq. Lewis, King, Krieg & Waldrop, PC One Centre Square 620 Market Street, 5th Floor Knoxville, Tennessee 37902 865-546-4646 On behalf of Blue Ridge Paper Products, Inc. 6 Attachment B EPA Objection Letter from James D. Giattina (Director, EPA Water Protection Division) to Colleen H. Sullins (Director, NC DWQ), February 22, 2010 o��TErFs, UNITED STATES ENVIRONMENTAL PROTECTION AGENCY z '" Y� REGION 4 o • '�f�/► Q ATLANTA FEDERAL CENTER F \r 61 FORSYTH STREET 4"T'+< PROc c;c ATLANTA, GEORGIA 30303-8960 FEB 22 Mr Ms. Colleen H. Sullins Director, Division of Water Quality North Carolina Department of Environment and Natural Resources 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Dear Ms. Sullins: On November 23, 2009, we received your submittal for our review of a draft National Pollutant Discharge Elimination System (NPDES) permit for Blue Ridge Paper Products, Permit No. NC0000272. We appreciate your efforts to continue the improvements in the quality of the Mill's discharges to the Pigeon River through the NPDES permit process and recognize the tremendous progress made by the Mill over the last 20 years. Your efforts have lead to significant improvements in water quality in both the North Carolina and Tennessee portions of the river. We also want to commend you for your decision to increase public participation in this process by holding a public meeting on the draft permit in Tennessee. We have had many discussions with your staff during our review of the draft permit and resolved a number of issues. To provide more time for these collaborative discussions, we notified you on December 10, 2009, that we would be taking the full 90-day period to complete our review pursuant to Section IV.B.3 of the NPDES Memorandum of Agreement (MOA) with the North Carolina Division of Water Quality (DWQ). At this time, we have completed our review and have remaining concerns with some provisions of the draft permit. Based on our review and consideration of issues raised at the recent public meeting and hearing, we are providing specific objections to the draft permit, which are explained in detail below, pursuant to Section IV.B.3 of the MOA and regulations at Title 40 Code of Federal Regulations (CFR) § 123.44. Specific Objection 1: Technology -Based Color Limits and Compliance Schedule The draft permit includes an initial annual average color permit limit of 39,000 #/day and requires a 37,000 #/day limit within four years. Although the 2001 current permit required that DWQ conduct an analysis of mill performance and possible revision of annual average color loading to a value in the 32,000-39,000 #/day range by March 2006, that revision did not occur. To assess current performance, the Environmental Protection Agency (EPA) developed 95% confidence limits for annual average color loadings using monthly average data for the period 2006-2009. EPA typically uses this type of statistical analysis to determine effluent performance and the use of such confidence limits is consistent with effluent guidelines development. That analysis indicates that the draft permit's annual average color limits do not fully capture current Internet Address (URL) • http://www.epa.gov Recycled/Recyclable • Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Postconsumer) performance or provide a sufficient incentive for the Mill to continue to improve its performance. These permit provisions are thus not consistent with the case -by -case Best Professional Judgment requirements of 40 CFR §§ 125.3(c)(2) and (d)(3). The draft permit is therefore subject to specific objection pursuant to 40 CFR §§ 123.44(c)(4), (6), and (7). To resolve this specific objection, based on the confidence limits cited above, the permit must require an initial annual average color permit limit of no greater than 37,900 #/day. Also, it must require an annual average color limit no greater than the range of 32,000-36,000 #/day at the end of the four-year compliance schedule. This is consistent with the color range recommended by the Technology Review Workgroup (TRW) in February 2008. Also, for the color compliance schedule cited above, the draft permit requires that the Mill develop an implementation plan for various color reduction efforts and submit annual reports of progress. However, the permit does not specify a date certain for submittal of that plan, nor interim requirements and the dates for their achievement. Since the compliance schedule exceeds one year, pursuant to 40 CFR § 122.47(a)(3), the compliance schedule must include interim requirements and dates for their achievement. The lack of interim requirements and dates for their achievement is subject to objection pursuant to 40 CFR §123.44(c)(7). To address this specific objection, the permit must require the facility to submit an implementation plan within the first year of permit issuance. The permit must also contain a reopener clause to include interim requirements and dates for their achievement as enforceable parts of the permit based on the submitted implementation plan. Once the implementation plan is submitted and reviewed, the permit should be modified accordingly. Specific Objection 2: Effluent Limit for Color; Protection of Water Quality and Status of Variance to Narrative Color Criterion The conditions and limits for color in the draft permit are based on the removal of the variance to the narrative color standard for the Pigeon River, which was adopted by the State on October 10, 2001. Thus, the color effluent limits, in the State's view, are consistent with the State's water quality standard for color. However, the fact sheet or record supporting the draft permit does not adequately support this determination. As background, in the absence of a numeric translation of the narrative standard by either North Carolina or Tennessee, EPA has historically translated the narrative standard to a numeric standard of 50 platinum cobalt units (PCU or "color units"); North Carolina has adopted a variance from this standard that was reflected in previous permits for the Blue Ridge facility. EPA's 50 color unit interpretation was based on studies conducted by the National Council for Air and Stream Improvement and this level has been met at the North Carolina/Tennessee state line in almost all measurements taken since 2002. North Carolina adopted a variance from this standard in 2001; the terms of that variance included the following: "This variance shall extend for an indefinite period of time, subject to consideration during the water quality standards triennial reviews. Any modification or termination based thereon shall be subjected to the public hearing process required by N.C.G.S. 143- 215.3(e)." 2 Therefore, until the administrative process for removal of the variance is completed, the 2001 variance remains in effect. Nevertheless, the fact sheet indicates that the variance has been removed and does not provide an explanation as to how the procedural requirements for its removal have been met. Also, as mentioned above, the actions required in Section B.8 of the 2001 variance and the 2001 permit do not appear to have been completed. That section of the variance required an evaluation of mill performance related to color and a recommendation by DWQ of the lowest achievable annual average and monthly average color loading effluent limitations for the mill. This section also required that, if the analysis supported a revision to average annual color limits in the range of 32,000 to 39,000 #/day, the revised limit was to become effective on March 1, 2006. However, the current effective annual average limitation for color is 42,000 #/day. In addition to not completing the procedures for variance removal, DWQ also did not include in the fact sheet a defensible scientific rationale for its determination that the draft permit will ensure compliance with North Carolina's narrative water quality standard for color. The fact sheet for the draft permit states that the monthly and annual average color limits are "in accordance with the TRW recommendations." The fact sheet also states: Based on actual instream color measured between 2002-2008, DWQ believes that compliance with the effluent color limits established in the 2001 permit were protective of NC's narrative water quality color standard. Only under extreme drought conditions (below 30Q2/7Q10 flows) were instream color values reported to exceed the Prestrude aesthetic threshold of 100 platinum cobalt units (PCU or "color units"), and NC regulations do not consider aesthetic color standards violated by the permittee when stream flows fall below 30Q2 design flow. The reference to the Prestrude aesthetic threshold of 100 PCU relates to a study entitled, Color: Misperceptions About the Aesthetics of River Color (Dr. A. M. Prestrude, July 1996) (the "Prestrude Report"). The Prestrude Report suggests that color levels become an aesthetic problem at 100 PCU. However, none of the studies relied upon in the Report are based on waters that are similar to the segment of the Pigeon River near Canton. The study of ambient color levels in the Prestrude Document included consideration of photographs of the Pigeon River downstream of the facility discharge which were taken in or about 1988. However, the color discharge from the facility during that time frame was approximately ten times the amount that is currently discharged. Further, the document also states, "From a perception standpoint, therefore, it is readily accepted that the general population can differentiate between colors differing by approximately 50 color units. While this difference is capable of scientific quantification, more refined studies are required to focus on what level of perceived color is objectionable in natural environments." Thus, the Prestrude Report does not purport to establish a one -size fits all color standard that can 3 be applied to different environments. EPA agrees with the Report's suggestion that more refined, site -specific studies would be useful to determine how the narrative standard should be interpreted or applied to specific natural environments such as the Pigeon River near Canton. 1 The terms of the 2001 variance allowed a monthly average limit of 55,000 #/day, which was selected based on actual performance of color treatment and removal technologies that were identified in an earlier review by the TRW. In other words, this value was selected based on the ability of the facility to meet the limit by installing and operating color treatment and/or removal technologies, rather than factors related to instream water quality. The monthly average color limit proposed in the draft permit is 52,000 #/day; however, the fact sheet does not clearly indicate whether this limit is based on what can be achieved through application of available technologies or on protection of water quality. Due to the absence of a numeric interpretation of the narrative color standard by the State, it is not clear whether the State has determined that the monthly limit of 55,000 #/day, i.e., "the effluent color limits established in the 2001 permit," or the monthly average of 52,000 #/day, as proposed in the current draft permit, is needed to meet the narrative color standard. Using the 30Q2 flow of the Pigeon River of 89.9 cubic feet per second at Canton, and assuming that the background color level of the Pigeon River is 13 PCU, the current draft permit allows for a color level downstream of the discharge of 114 PCU, and the previous 2001 monthly average permit limit of 55,000 #/day allowed an instream color level of 120 PCU. The absence of a specific numeric interpretation of the State's narrative color standard and the ambiguity of the statements made in the fact sheet make it difficult to determine at what PCU level the State believes ambient conditions would be consistent with the narrative color standard. Thus, the effluent limits in the draft permit would result in instream color levels that exceed both the "Prestrude aesthetic threshold of 100 platinum cobalt units" and EPA's historical use of 50 PCU as a numeric translation of the State's narrative standard. However, the fact sheet also does not adequately explain how 114 PCU will comply with the State's narrative color standard. The fact sheet states: NC has generally viewed color as primarily an aesthetic issue, and the interpretation of color as an aesthetic impact is subjective. Similar to odor issues, the number of complaints received serves as one means to gage public perception of color impact. The NC DWQ regional office in Asheville has received only one color complaint in recent years. ' The Tennessee Department of Environment and Conservation reviewed the studies summarized in the Prestrude Report and concluded that the appropriate interpretation of its narrative color standard requires that the increase of ambient color levels in the Hiwassee River should be limited to an increment of 50 color units over levels measured above the Bowater paper facility outfall. 4 This appears to be the State's justification for the determination that the draft permit will ensure compliance with its narrative color standard and a variance is no longer necessary. However, while the presence or absence of complaints may be relevant, EPA does not find the counting of complaints to be a sufficiently structured process for establishing a state water quality standard.2 EPA is not aware that the State has notified the public that the frequency of complaints is a factor that is used in the State's interpretation or application of the narrative color standard. As noted above, EPA has historically interpreted North Carolina's narrative color standard for the Pigeon River to be 50 PCU. The rationale provided in the fact sheet does not establish a scientifically defensible basis for the State's interpretation of the narrative standard or its conclusion that the limits in the draft permit implement the State's water quality requirements for color, as established in 15A North Carolina Administrative Code (NCAC) 2B.0211(3)(f) and 15A NCAC 2B.0206(a)(4). In summary, EPA is concerned that the State has insufficient record support for the conclusion that the effluent limits and conditions for color proposed in the draft permit are protective of the State's narrative water quality color standard. The fact sheet's discussion of the basis of the color conditions and limitations does not establish that the draft permit will comply with the narrative color standard at all flows equal to or greater than the applicable instream flow, i.e., 30Q2 flow, as established in its water quality standards. Therefore, the draft permit does not comply with requirements at 40 CFR §122.44(d)(1)(vii)(A) and is subject to objection under 40 CFR § 123.44(c)(8). To address this specific objection, the State must revise the terms of the variance from the North Carolina water quality standard for color for the Pigeon River to reflect the proposed permit conditions and limits for color as referenced in Specific Objection 1 above. The information necessary to support a variance determination appears to have already been developed by the facility in conjunction with the TRW. Accordingly, EPA commits to timely review and act on a request to revise and extend the variance upon the formal submittal of a proposed variance revision by DWQ. Recommendation For Site -Specific Study In order to create a better record for any future effort to reinterpret the narrative color standard, and ensure that authorized discharges are protective of the narrative standard, EPA recommends the addition of a condition in the draft permit requiring the permittee to provide funding for an independent study of color levels in the North Carolina segment of the Pigeon River, or a segment of a watershed that is reasonably similar to the physical characteristics of the Pigeon River downstream of the mill. The study should focus on the aspects of the State's narrative color standard that are relevant to conditions and limits in the permit, and should address assessment of color levels in ambient waters of the Pigeon River (or other watershed(s), as specified above) when those levels are in the range of 50 to 120 PCU. The permit could also include a reopener clause to implement the conclusions of the study if warranted. 2 EPA notes that, based on comments during the public meeting and hearing, there are citizens who believe there is a basis to complain about ambient color in the Pigeon River. 5 EPA believes that an independent, unbiased site -specific study would be useful to determine how the State's narrative color standard should be interpreted or applied to the Pigeon River near Canton. Such a study would be valuable in addressing uncertainties relating to the narrative standard for color because many site -specific factors influence the overall perception of an individual stream setting and the level of protection needed for a stream or watershed. Evaluation of the Pigeon River downstream of the Blue Ridge mill is even more critical for setting regulatory targets, given the color levels in the river, and the public interest in the present permitting process for the Blue Ridge facility. The study should be conducted with unbiased observers. For example, college students were used in some of the studies performed by Prestrude. The results of the study could be used by the State to address other issues related to the application of the North Carolina narrative color standard, such as whether it would be more appropriate to establish a regulatory requirement for the river solely based on a specific color concentration, or as an increment over "background" color levels. We also suggest that EPA be involved in the review and approval of the framework of the plan for conducting the study prior to initiation. Specific Objection 3: Temperature Variance Regarding temperature, the permit implements a Clean Water Act (CWA) § 316(a) variance by requiring: 1) an instream monthly average of 32° C during July -September; 2) an instream monthly average of 29° C during the rest of the year; and 3) downstream values not to exceed upstream values by more than a monthly average of 13.9° C. ("Delta T") Compliance with these three conditions is assessed 0.4 miles downstream from the discharge at Fiberville Bridge. To obtain such a variance, an applicant is required by Section 316(a) and applicable regulations at 40 CFR Part 125, Subpart H, to demonstrate that the proposed variance assures the protection and propagation of a balanced, indigenous population ("BIP") of shellfish, fish, and wildlife in and on the body of water into which the discharge is made. The information submitted with the draft permit is not sufficient to make the required demonstration. This concern is heightened by a North Carolina Wildlife Resources Commission report indicating that a September 2007 fish kill in the Pigeon River was, in part, due to elevated temperature. As a result of the absence of a sufficient demonstration that the variance assures protection of a BIP, the draft permit is subject to objection under 40 CFR §123.44(c)(7). To resolve this objection, the permit must require completion of an updated study that includes thermal modeling and demonstrates the protectiveness of the proposed variance; the updated study should meet the parameters outlined in the enclosure to this letter. Further, in the interim period before an adequate study is completed, a reduction in the Delta T limit should be included in the permit to provide additional assurance that the BIP is protected. The current Delta T limit was based on mill operating conditions prior to the modernization project completed in the early 1990s, which included the installation of a mechanical draft cooling tower. Based on daily temperature data taken at the Fiberville Bridge (River Mile 62.9) and just above the Canton Mill (River Mile 63.8) during January 2005 to December 2009, EPA determined average Delta T values for warm months (April through October) and cool months 6 (November through March). The 95th percentile values for average Delta T for the warm and cool periods were 7.4° C. (13.28' F.) and 8.2° C. (14.69° F.), respectively. EPA believes the average Delta T value of 8.2° C. will be appropriate for all times of the year and could be adjusted pending the results of the thermal modeling to be completed as part of the Section 316(a) updated study. Lastly, the permit must require the Mill to monitor and report the daily maximum and monthly average effluent temperatures. Specific Objection 4: Absence of Daily Maximum Dioxin Limit and Fish Tissue Monitoring The draft permit contains a monthly average dioxin limit; however, it does not include a daily maximum limit, as required by 40 CFR Part 122.45(d)(1). The draft permit is therefore subject to objection pursuant to 40 CFR § 123.44(c)(7). To address this specific objection, the permit must contain a daily maximum dioxin limit. That limit may be set at a level equal to the monthly average limit. Also, the draft permit contains a new provision that fish tissue monitoring for dioxin will cease after 2009, unless DWQ determines that a public health hazard exists. EPA routinely uses ambient fish tissue dioxin monitoring to determine whether water column impairment is occurring and whether reasonable potential to exceed a state's numeric dioxin criterion exists. The fish tissue levels indicating water column impairment are typically well below the levels at which fish advisories are typically adopted. Based on North Carolina's dioxin numeric criterion of 0.005 parts per quadrillion (ppq), the associated fish tissue value indicating impairment would be approximately 0.025 parts per trillion (ppt). Out of the last five years of fish tissue data collected by the facility, levels of dioxin detected in common carp at Station 4A in upper Waterville Lake have been 1.1-1.3 ppt, with two years having estimated concentrations reported. Assuming a linear relationship between water column concentrations and fish tissue levels, these fish tissue concentrations would indicate a water column concentration in the range of 0.22-0.26 ppq, thus exceeding the State's numeric criterion. In this case, direct measurement of dioxin in fish tissue shows evidence of accumulation; reliance on effluent sampling alone using method detection limits that cannot measure dioxin at the level of the State numeric criterion does not provide the necessary information to make this determination. As a result, the removal of the dioxin fish tissue monitoring requirement as proposed in the draft permit does not ensure that sufficient data is generated to adequately represent the monitored activity, as required by 40 CFR §§ 122.41(j)(1) and 122.48(a)-(c). Requiring monitoring in the event of a public health hazard is not adequate to determine if water quality standards are being met. The lack of such data also does not allow for a complete evaluation of the reasonable potential to exceed state water quality criteria, as required by 40 CFR § 122.44(d)(1). Accordingly, the draft permit is subject to objection pursuant to 40 CFR §§ 123.44(c)(5) and (7). To address this specific objection, the permit must require that the facility conduct monitoring of fish tissue for dioxin (as was done in 2009) in the first, third, and fifth years of the term of this permit. Annual monitoring does not appear to be warranted since fish tissue levels have shown minor changes in recent years. 7 Specific Objection 5: Absence of Turbidity Monitoring EPA has previously requested that the State specifically document in the permit fact sheet the manner in which reasonable potential to exceed North Carolina's Class C criterion for turbidity was evaluated ("the receiving water shall not exceed 50 Nephelometric Turbidity Units in streams not designated as trout waters"). To the extent that sufficient data to make that evaluation were not available, we further requested that specific monitoring to obtain the information be required by the permit. The draft permit and fact sheet did not address these concerns. Therefore, the draft permit does not ensure that the discharges authorized under the permit are protective of North Carolina's numeric criterion for turbidity. The lack of such data does not allow for a complete evaluation of the reasonable potential to exceed the state water quality numeric criterion cited above, as required by 40 CFR § 122.44(d)(1), and as a result, the draft permit does not include effluent limits that may be necessary to protect water quality. The draft permit is therefore subject to objection under 40 CFR §§ 123.44(c)(5), (7), and (8). To address this specific objection, the permit must require that the facility conduct downstream turbidity monitoring at Fiberville Bridge at a minimum frequency of twice per month during the April -October timeframe for a minimum of one year. Such monitoring must not occur within 72 hours of a rain event. The permit must also contain a specific reopener to enable DWQ to add an appropriate turbidity limit if reasonable potential to exceed the State's numeric criterion is found to exist. Based on North Carolina's numeric criterion, upstream data are not needed and should not be used to assess reasonable potential. Specific Objection 6: Absence of Effluent Hardness Monitoring To Evaluate Zinc Toxicity The draft permit requires quarterly zinc monitoring because DWQ determined that reasonable potential exists to exceed North Carolina's action level of 50 ug/l based on an assumed hardness of 50 mg/l. We are aware of a low upstream hardness value of 7.6 mg/l. Because zinc toxicity increases at lower hardness values, any future evaluation of effluent zinc data without concurrent effluent hardness monitoring cannot adequately assess reasonable potential to exceed the action level. Without concurrent effluent hardness measurements, the draft permit does not ensure that sufficient data is generated to adequately represent the monitored activity, as required by 40 CFR §§ 122.41(j)(1) and 122.48(a)-(c). Further, without such data, the draft permit does not allow for a complete evaluation of the reasonable potential to exceed the hardness -based state water quality numeric criterion for zinc, as required by 40 CFR § 122.44(d)(1), and as a result, the draft permit does not include effluent limits that may be necessary to protect water quality. The draft permit is therefore subject to objection under 40 CFR §§ 123.44(c)(5), (7), and (8). To address this objection, the permit must be revised to include a requirement for quarterly effluent hardness monitoring concurrent with the quarterly zinc monitoring. 8 EPA also offers the following recommendations for your consideration: Recommendation 1 Regarding AOX Limits EPA also has the following comment regarding the draft permit limits for adsorbable organic halides (AOX), which reflect a 39% increase in loadings from the 2001 permit. The DWQ presentation at the recent public hearing and meeting indicated that the facility is #2 in the world in terms of AOX removal. Our analysis of recent AOX effluent data confirms the facility's performance — the typical discharge is less than 300 #/day as a monthly average. Based on that performance, we recommend that the AOX limits in the 2001 permit be retained. Recommendation 2 Regarding TRW The TRW has historically performed a valuable function in assessing color reduction efforts at the Mill and providing recommendations to DWQ. We recommend that the permit include a provision ensuring that the TRW will assess color reduction technologies and provide recommendations to DWQ at the end of this next permit term. To address the specific objections above, I ask that you redraft the permit and submit a proposed permit and a revised fact sheet to EPA for review under the provisions of Section III.B.6 of the MOA: I also ask that you submit a summary of all public comments that have been received and DWQ's response to them. In accordance with Section IV.B.7 of the MOA and 40 CFR § 123.44, within ninety (90) days of your receipt of this letter, DWQ or another interested person may request that a public hearing be held, pursuant to 40 CFR §123.44(e). If no public hearing is held, and DWQ does not resubmit a proposed permit that has been revised to meet our specific objections within ninety (90) calendar days of receipt of this letter, exclusive authority to issue the permit passes to EPA for one permit term. Any requests for a hearing on the objections and the procedure for resolving any objection shall be governed by 40 CFR § 123.44, as provided in Section IV.B.7 of the MOA. If you have any questions, please have your staff contact Mr. Marshall Hyatt at 404-562-9304. Enclosure Sincerely, ames D. Giattina Director Water Protection Division 9 cc: Dane A. Griswold, Blue Ridge Paper Products Inc. John S. Curry, Esq., North Carolina Environmental Management Commission Jeffrey V. Morse, North Carolina Environmental Management Commission Paul E. Davis, Tennessee Department of Environment and Conservation David McKinney, Tennessee Wildlife Resources Agency 10 Enclosure Section 316(a) Report and the Study Plan for the Subsequent Permit Blue Ridge may use existing data in completing its study and may incorporate the existence of such data into the monitoring program plan design; however, the existing data needs to be evaluated and presented in the context of a BIP definition that the existing record does not adequately provide. Section 316(a) of the CWA contains the term "BIP" but does not define it. However, 40 CFR §125.71(c) defines the term "balanced, indigenous community"1 as: "A biotic community typically characterized by diversity, the capacity to sustain itself through cyclic seasonal changes, presence of necessary food chain species and by a lack of domination by pollution tolerant species. Such a community may include historically non-native species introduced in connection with a program of wildlife management and species whose presence or abundance results from substantial, irreversible environmental modifications. Normally, however, such a community will not include species whose presence is attributable to the introduction of pollutants that will be eliminated by compliance by all sources with section 301(b)(2) of the Act: and may not include species whose presence or abundance is attributable to alternative effluent limitations imposed pursuant to section 316(a)." The Environmental Appeals Board stated in its decision in In Re Dominion Energy Brayton Point, LLC, 12 Environmental Appeals Decision (E.A.D.) 490 (2006)("Brayton Point"), "this definition clearly envisions a consideration of more than the population of organisms currently inhabiting the water body. In this vein, although it permits inclusion of certain `historically non-native species' that are currently present, it explicitly excludes certain currently present species whose presence or abundance is attributable to avoidable pollution or previously - granted section 316(a) variances." Page 557 of the Brayton Point E.A.D. goes on to further state that a BIP "can be the indigenous population that existed prior to the impacts of pollutants, not solely the current populations of organisms." To the question of how a permittee should identify a BIP in an area that has been altered by impacts from an existing thermal discharge, the Brayton Point E.A.D. points out that it may be appropriate to use a nearby water body unaffected by the existing thermal discharge as a reference area. Examination of an appropriate reference area may be applicable in this case. The definition of "balanced, indigenous community" at 40 CFR § 125.71(c) contains several key elements. To be consistent with the regulations, each of these key elements should be specifically addressed in the demonstration, and the Pigeon River Section 316(a) monitoring plan for the next permit cycle should be designed to generate information relevant to these elements. Those elements include: (1) "a population typically characterized by diversity at all "Balanced. indigenous community" and BIP are equivalent terms. trophic levels;" (2) "the capacity to sustain itself through cyclic seasonal changes;" (3) "presence of necessary food chain species;" (4) "non -domination of pollution -tolerant species;" and (5) "indigenous." Each of these elements is discussed in more detail below: 1. "A population typically characterized by diversity at all trophic levels" means that all of the major trophic levels present in the unaffected portion of the water body should be present in the heat affected portions. EPA recognizes that community structure differences will occur, however, the number of species represented in each trophic level in the unaffected portions should be reasonably similar in the heat -affected portions of the water body. Sampling and analysis of fish and invertebrate communities should be done such that the major trophic levels are identified and represented by reasonably similar species distributions. Also, the study plan should be expanded to include some observations of wildlife (i.e., water fowl, mammals, amphibians, etc.) both upstream and immediately downstream of the discharge point that may be impacted by the thermal discharge. 2. "The capacity to sustain itself through cyclic seasonal changes" means that any additional thermal stress will not cause significant community instability during times of natural extremes in environmental conditions. Community data should be collected during normal seasonal extremes as well as during optimal seasonal conditions. Data should be compared between heat affected and unaffected portions of the receiving water body to account for normal community changes corresponding with a change in season. 3. "Presence of necessary food chain species" means that the necessary food webs remain intact so that communities will be sustaining. We believe that exhaustive food web studies are not necessary provided that invertebrate, fish and wildlife communities are otherwise healthy, i.e., represented by sufficiently high species diversity and abundance (appropriate for that portion of the receiving water body) for the identified trophic levels and sustaining through normal seasonal changes. 4. "Non -domination of pollution -tolerant species" means that in the case of a thermal effluent, community assemblages in heat affected portions of the lake dominated by heat tolerant species do not constitute a BIP. EPA recognizes that because all species have varying levels of thermal tolerance, communities in the heat affected portions of the water body may possess altered assemblages in terms of species present and abundance. All community data should be collected, analyzed and presented to clearly demonstrate that affected communities have not shifted to primarily heat tolerant assemblages. 5. "Indigenous" has been further clarified in the regulations: "Such a community may include historically non-native species introduced in connection with a program of wildlife management and species whose presence or abundance results from substantial, irreversible environmental modifications. Normally, however, such a community will not include species whose presence is attributable to the introduction of pollutants that will be eliminated by compliance by all sources with section 301(b)(2) of the Act: and may not include species whose presence or abundance is attributable to alternative effluent limitations imposed pursuant to section 316(a). " EPA recognizes that non -indigenous species are present in most aquatic systems in the United States. All community data should be analyzed and presented to demonstrate that community 2 assemblages in the heat affected portions of the receiving water body are not significantly different from non -affected communities with regard to the number of non -indigenous species in the assemblages. In addition to the foregoing components of the BIP definition, the study plan should also include provisions for the identification of RIS (e.g., a list of threatened, endangered, thermally sensitive, or commercially or recreationally valuable species up- and downstream of the study area), as contemplated in 40 CFR §125.72(b). 40 CFR §125.71(b) defines RIS as "species which are representative, in terms of their biological needs, of a balanced, indigenous community of shellfish, fish and wildlife in the body of water into which a discharge of heat is made." The following EPA comments should be specifically addressed in the study plan prior to Blue Ridge commencing sampling during the term of the next NPDES permit. The plan should: a) include available information on wildlife in the lake areas based on communications with North Carolina's Wildlife Management Agency. See item 1 above. b) include a diagram depicting the thermal plume under the worst case scenario and address the presence or absence of a zone of passage for which fish can travel around the thermal plume. e) provide information of which fish collected are either heat -sensitive or nuisance species. See item 4 above. d) provide a list of any lake species that are endangered or threaten in accordance with federal and state regulations. e) analyze and present data to clearly demonstrate that affected communities have not shifted to primarily heat tolerant assemblages. f) include recent data or information on benthic macroinvertebrates. See item 1 above. g) analyze and present all data to demonstrate that community assemblages in the heat - affected portions of the receiving water body are not significantly different from non - affected communities with regard to the number of non -indigenous species in the assemblages; and h) include a thermal modeling study based on historical effluent temperatures and operating conditions to determine appropriate permit limits for temperature. In order to ensure that Blue Ridge's future study plan for the Pigeon River is adequate to demonstrate that the Canton Mill should have its Section 316(a) variance renewed during the term of its next NPDES permit, EPA requests the opportunity to review a draft Section 316(a) plan prior to Blue Ridge commencing the study. 3 North Carolina Wildlife Resources Commission LA Cameron Ingram, Executive Director March 19, 2021 Mr. Sergei Chernikov NC Division of Water Resources 1617 Mail Service Center Raleigh, NC, 27699 SUBJECT: Blue Ridge Paper Products Inc. dba Evergreen Packaging NPDES Permit NC0000272 Renewal Pigeon River, Haywood County Dear Mr. Chernikov: Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed information concerning the proposed NPDES Permit renewal for Blue Ridge Paper Products' paper mill discharge on the Pigeon River in Haywood County. This information included the 2014 "Canton Mill Balanced and Indigenous Species Study for the Pigeon River" (BISS), which characterizes the river's biological community upstream and downstream of the discharge. Comments from the NCWRC on the permit action are provided under provisions of the Clean Water Act of 1977 (as amended), Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d), North Carolina General Statutes (G.S. 113-131 et seq.), and North Carolina Administrative Code 15A NCAC 10I.0102. The Blue Ridge Paper Products (BRPP) mill is an integrated elemental chlorine -free bleached kraft pulp and paper mill with oxygen delignification and bleach filtrate recycle. In the early 1990s, BRPP's predecessor, Champion International, implemented a modernization project that markedly improved water quality in the Pigeon River. NCWRC appreciates the commitments of BRPP and the NC Division of Water Resources to this objective. Improvements in aquatic habitat allowed reintroductions of some extirpated fishes in the watershed. The following comments are based on information available to NCWRC. If there is additional data or information, we would be happy to consider this as well. The proposed permit renewal includes the following elements that are pertinent to our comments: • Continuance of a 316(a) variance for temperature, requiring that BRPP not exceed a monthly average temperature of 32° C in the summer (July, August, and September) and 29° C in the Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Blue Ridge Paper NPDES Page 2 March 19, 2021 Pigeon R, Haywood County winter (October - June) at the Fiberville Bridge, which is 0.4 mi downstream of the mill outfall. In addition, the monthly average temperature at this location must not exceed the monthly average temperature of the upstream monitoring location by 8.5° C. • Increase the flow limit from 29.9 to 34.0 mgd. Biological Community Upon review of the BISS and additional available data, NCWRC biologists recognize a disparity in the native aquatic community upstream and downstream of the mill, and we continue to be concerned about the role that thermal impacts play in this difference. The BISS concludes that there are no adverse impacts from the mill's discharge and "a diverse and healthy community persists in the Pigeon River below the Canton Mill." Although the BISS presents various metrics and analyses to support this conclusion, a more focused review of the data in the BISS and other data collected by state agencies demonstrates that the aquatic community downstream of the mill is significantly different from the upstream community and extremely atypical of rivers of western North Carolina. For example: • The fish community downstream of the mill is very different from that upstream of the mill in several ways. The BISS describes the Pigeon River below the mill as having high fish diversity. However, a long reach of the river downstream the mill does not support key species. o The River Chub (Nocomis micropogon) is not found within the first 8 miles downstream of the mill, but it is found less than a mile upstream of the mill's discharge. This fish is considered a keystone species, which builds nests that are used by numerous other species for spawning. There is no other species in the Pigeon River that shapes habitat and creates spawning sites for other species as the River Chub does. o Although the BISS describes the Pigeon River as having a high number of shiner species, many of these species are not found for a considerable distance below the mill. Saffron Shiner (Notropis rubricroceus, a river chub nest associate) and Mirror Shiner (N. spectrunculus) were found less than a mile upstream of the mill's discharge but not downstream of the mill at any site. Warpaint Shiner (Luxilus coccogenis) and Tennessee Shiner (Notropis leuciodus), both dependent on River Chub nests and found less than a mile upstream of the mill through BISS or NCWRC monitoring, were not found or were found in very limited abundance below the mill for the first 8 miles downstream of the mill. o Mottled Sculpin (Cottus bairdii), an important host fish species for Appalachian Elktoe, was found in abundance less than a mile upstream of the mill but found only at one downstream site, 11 miles downstream of the mill. • Although multiple species of salamanders, including the Eastern Hellbender (Cryptobranchus alleganiensis, US Federal Species of Concern, NC Special Concern), are found in the Pigeon River at numerous locations upstream of the mill according to both NCWRC surveys and a 2009 longitudinal salamander survey described in the BISS, no salamander species were found in the 15 miles surveyed downstream of the mill according to the 2009 study. • Data available express a significant difference in the mussel fauna of Pigeon river upstream and downstream of the BRPP. Here is a summary of our data assessment. Blue Ridge Paper NPDES Page 3 March 19, 2021 Pigeon R, Haywood County o 2012 survey efforts for the BISS found no mussels either upstream or downstream of the mill. NCWRC staff and others have consistently found listed native mussels within a mile upstream of the mill, namely the Appalachian Elktoe (Alasmidonta raveneliana, US and NC Endangered) and Wavyrayed Lampmussel (Lampsilis fasciola, US Federal Species of Concern, NC Special Concern), with Appalachian Elktoe most recently found in 2020. However, these mussels have not been found downstream of the mill in the Pigeon River at any location upstream of Crabtree Creek, nearly 14 miles. o The BISS maintains that conditions in the river would support native mussels if they occurred, describing the results of a multi -year mussel silo study, in which young Wavyrayed Lampmussels placed in silos demonstrated survival and growth. However, this silo study cannot be used to assume long-term mussel survival and successful reproduction. Mussel reproduction and juvenile development depend on a complex set of factors, including appropriate temperature, dissolved oxygen, low salinity, and low levels of pollutants (e.g., ammonia, potassium), and presence and stability of appropriate fish host species. In addition, the closest silo to the mill was in Clyde, approximately 5 miles downstream of the mill's outfall, so it is unclear how well young mussels would fare in the reach between the mill and Clyde. • Viability of crayfish upstream and downstream of the BRPP is notably different. No crayfish have been found within the first 11 miles of river downstream of the mill, although they are found in tributaries to the downstream reach of the Pigeon River and within the Pigeon River upstream of the mill, with most recent records just upstream of the mill from 2020. It is also notable that the crayfish species found 11 miles downstream of the mill is the non-native White River Crayfish (Procambarus acutus). Given its tolerance to high water temperatures and presence in Beaverdam Creek, a tributary to the river just downstream of the mill, and within the Pigeon River less than a mile upstream of the mill, this species would be expected in the Pigeon River just downstream of the mill. It is absent in the 11-mile reach downstream of the mill, suggesting that high temperatures may not be the only issue impacting crayfish in that reach. Water Quality and Flow Issues Given that effluent chronic (7-day exposure) toxicity testing has not demonstrated toxicity, it is likely that consistent or acute high temperatures caused by mill effluent are a key factor affecting the biological community in the Pigeon River downstream of the mill. BRPP effluent conductivity is measured but not subjected to a permit limit. Analysis of recent daily monitoring report data (January -November 2020) from upstream and downstream Fiberville bridge monitoring locations shows a mean rise in conductivity of 277 µs/cm, with a maximum increase of 1,358 µs/cm. For comparison, mean conductivity upstream of the mill was 27 µs/cm. Given these high levels of conductivity and indications that there may be water quality factors besides temperature affecting the aquatic community, NCWRC believes that additional analysis of constituents causing these high conductivity levels is merited. The proposed increase in discharge flow from 29.9 to 34.0 mgd will likely exacerbate temperature and other possible water quality impacts from the mill, as the discharge flow already accounts for most of the flow in the river at various times during the year. Blue Ridge Paper Blue Ridge Paper NPDES Page 4 March 19, 2021 Pigeon R, Haywood County withdraws its process water from the Pigeon River and returns flow as processed wastewater 0.3 mi downstream. When BRPP staff anticipate that Pigeon River flows will be inadequate for mill operations, they release flows upstream from Lake Logan on the West Fork of the Pigeon River to increase downstream flows. Analysis of flow data from the US Geological Survey's (USGS) upstream gauge (USGS 03456991) for the period of 1985 to 2020 demonstrates that the proposed withdrawal of 34 mgd will exceed flows available in the Pigeon River 6% of the time for September, the lowest flow month of the year. 7Q10 flows are often used as a bare minimum of what can sustain some biological function within a river; these are not required within the 0.3 mile reach between BRPP's intake and outflow, but it is useful to see how often these minimal flows would be absent with the increase in withdrawal/discharge. The USGS gauge data indicate that there would be inadequate streamflow to provide the proposed withdrawal of 34.0 mgd and maintain the 7Q10 flow (approximately 27 mgd, per USGS calculation) in the bypass between the intake and outfall for more than 25% of the time from July through November. Recommendations Given concerns about temperature and the significantly altered aquatic community downstream versus upstream of the mill, NCWRC requests that the permit conditions include the following elements: • Temperature should be monitored on a continuous 15-minute interval basis at the upstream monitoring location and two downstream locations — DN-1 (Fiberville bridge), and DN-2 (above Clyde, RM 57.7) — so that temperature fluctuations can be better described. The data should be summarized on daily basis as minimum, maximum, mean, and median. The entire dataset should be retained and made available for outside analysis. We recommend that BRPP use the upstream USGS station as their upstream control for flow and temperature. • Presumably, the 8.5° C exceedance is not in addition to the 29° C and 32° C thresholds (i.e., allowing up to 37.5° C and 40.5° C), but is aimed at limiting even more extreme temperature rises during winter months. Clarification of how these two thermal limits interact within the permit is needed. • It is unclear why the draft permit specifies that temperature limits be met on a monthly basis, when temperature limits are to be met on a weekly basis, according to the April 24, 2012 partial settlement agreement 10 EHR 4341 (Cocke Co. TN v DENR, DWQ, and Blue Ridge Paper Products) and 10 EHR 4982 (Cocke Co. TN v EMC, NPDES Committee, and Blue Ridge Paper Products). • Based on aquatic species concerns, we believe there would be a significant benefit of temperature limits being met on a daily average instead of a weekly average at the Fiberville Bridge so that large fluctuations in water temperature are kept to a minimum. • We request that the permit require analysis of individual constituents that are responsible for the high conductivity levels in the mill's effluent, such as salinity, potassium, sodium, chlorides, nitrites, and sulfates. If the permit does not specify this analysis, we ask that the NC Division of Water Resources perform its own analysis of mill effluent so that a better characterization of the discharge is available upon which to base permit conditions and potential mill process changes. • We recommend that a BISS technical team be established that includes the NCWRC. This technical team would provide input on survey locations and the methods utilized for the next Blue Ridge Paper NPDES Page 5 March 19, 2021 Pigeon R, Haywood County BISS, as well as be allowed the opportunity to review the BISS before it is submitted to NCDWR and the US Environmental Protection Agency. Long-term, detailed data should be used to properly interpret the BISS. NCWRC sees value in the next BISS including more robust biological and water quality monitoring, and offers the following specific recommendations: o Taxa-specific surveys for fish, mussels, and crayfish upstream and downstream of the mill should be performed, with a minimum of three surveys per site, one per season (spring, summer, and fall). The number of upstream and downstream sites and tributary sites can be reduced to accommodate this increase in effort. o Reference sites that are more analogous to the Pigeon River should be incorporated; instead of the Swannanoa River, we recommend the upper French Broad River as a reference. o Salinity be measured at each site. All these factors could be further discussed and planned during meetings of the technical team. Most importantly, we ask that solutions for the effluent's contribution to the river's biological impairment be evaluated and implemented during this permit cycle. These solutions should include technical and possible operational changes and appropriate thermal limits that reduce the chronic effects of elevated temperature on the aquatic community. Thank you for the opportunity to review and comment further on this permit action. Please contact Andrea Leslie at (828) 400-4223 if there are any questions about these comments. David R. Cox, Supervisor Habitat Conservation Division ec: Luke Etchison, Chris Goudreau, TR Russ, Powell Wheeler, NCWRC Byron Hamstead, USFWS BILL WALKER Executive Director East Tennessee Local Workforce Development Board 728 Emory Valley Road, Ste. E Oak Ridge, Tennessee 37830 bwalker@ethra.org 865. 705. 9765 21 April 2021 Wastewater Permitting ATTN: Blue Ridge Paper Products Permit 1617 Mail Service Center Raleigh, NC 27699-1617 Nc xcooa-1 RECEIVED APR 27 2021 NCDEQIDWRINPDES Greetings, As an individual charged in my professional capacity with the advancement of economic development, job creation, and job retention in the East Tennessee Local Workforce Development Area —a sixteen -county service delivery area home to the Pigeon River— I write to express strong resistance to the request by Blue Ridge Paper Products to remove the color variance from its new permit. The Pigeon River is still listed as impaired because of color under the variance. Removal of the variance will do nothing to improve the color and quality of the Pigeon River. Cocke County, Tennessee, located in the East Tennessee Local Workforce Development Area, has benefited tremendously from the rafting industry, which welcomes visitors from around the world to the white waters of the Pigeon River, ranked #3 among top whitewater rafting rivers in the United States. The river experienced consistent growth in terms of commercial rafting from 1995 to 2011, far surpassing the growth of other top rivers. The number of annual rafting customer visits to Pigeon River increased from approximately 18,000 in 1995 to more than 160,000 in 2011, a growth rate of 750 percent! From 1995 until 2019, nearly every year has seen a significant increase in the number of visitors and the money derived from the business. Figures released by the Cocke County (TN) Clerk's office for the 2019 whitewater rafting season show 225,651 rafters paid to enjoy the local streams and brought in a total of $375,567 to the county coffers. Added to that is $5,500 in permit fees paid by the eleven licensed rafting companies. The $375,568 figure is up nearly $5,000 from the $370,752 paid by 222,535 rafters in 2018. However, it still falls below the all-time high $405,742 figure from 2016 and the $391,960 in 2015. Anticipation is high that the 2021 season, the first after the economic shutdown caused by COVID-19, will outstrip all previous tourism and tax record. Yet tax --records show only a modest return on the investment of whitewater rafting on the Pigeon River in Tennessee. Industry models suggest that the total ROI for Pigeon River rafting exceeds $31 million annually. I appreciate the opportunity to register my deep reservations about granting the variance requested by the Blue Ridge Paper Products. Sincerely, Bill Walker OHY TAMS NON CW Boy 51592 April 9, 2021 North Carolina Department of Environmental Quality 217 West Jones Street Raleigh, NC 27603 publiccomments@ncdenr.gov Re: Blue Ridge Paper Products hearing Ladies/Gentlemen: Knoxville, Tennessee 37950-1592 I am writing on behalf of the Smoky Mountains Hiking Club (SMHC) in connection with the upcoming hearing on April 14 regarding Blue Ridge Paper Products' proposed wastewater permit renewal and variance removal. Please make these continents a part of the record for such hearing. SMHC was founded in 1924 and is one of the original clubs responsible for making the dream of the A.T. a reality. Today, SMHC maintains 102 miles of the A.T., including the portion within the Great Smoky Mountains National Park (GSMNP) that is adjacent to the Pigeon River. SMHC has a longstanding tradition of hiking, fellowship, volunteerism, and conservation of the Great Smokies and surrounding lands. Until the mid-1980s the Pigeon River that flows through Cocke County (between the GSMNP and Cherokee National Forest) and into the French Broad River (and then into Knoxville where SMHC is based) was a sensory mess, dirty, smelly, and polluted, all resulting from discharges by Champion International Paper Company (now Blue Ridge Paper Products) in Canton, NC. Successful lawsuits by citizens and regulatory action forced a cleanup of the river and has made Cocke County a budding adventure travel destination (around $52 million in direct tourism expenditures in 2019 and especially rafting on the Pigeon). Now, Blue Ridge Paper is requesting renewal of its National Pollutant Discharge Elimination System discharge permit and seeks to loosen regulations, including removal of a color variance, on effluent entering the Pigeon River, thereby opening the possibility of returning the river to its past polluted state. The quality of the water in the Pigeon River is important to the downstream residents, to the downstream recreation users of the Pigeon River, and to the adjacent National Park. We are therefore very much opposed to any relaxation or reduction of the existing permit requirements and urge you to continue to protect the water quality of the Pigeon River. Respectfully, Diane Petrillo M.D., President Smoky Mountains Hiking Club Exploring the Smokies Since 1924 4nrt11 TarnTina GriteralcAssetnlrl r Pause (Of geprmentatilfro REPRESENTATIVE MARK PLESS 118TH DISTRICT OFFICE: PHONE: EMAIL: 533 LEGISLATIVE OFFICE BUILDING 300 N. SALISBURY STREET RAL.EIGH, NC 27603-5925 (919) 733-5732 mark.pless@ncleg.gov Danny Smith, Director NC DEQ — Division of Water Resources 1611 Mail Service Center Raleigh, NC 27699 Danny: DIVISION OF WATER RESOURCES DIRECTOR'S OFFICE COMMITTEES: APPROPRIATIONS APPROPRIATIONS, HEALTH AND HUMAN SERVICES FEDERAL RELATIONS AND AMERICAN INDIAN AFFAIRS HOMELAND SECURITY, MILITARY, AND VETERAN AFFAIRS TRANSPORTATION WILDLIFE RESOURCES I am reaching out to advocate for the Evergreen Paper Mill and its crucial role in the Town of Canton ahead of the NPDES wastewater discharge permit renewal. The mill has been a fixture of the town for over a century and currently provides over 1,000 jobs. As the largest industrial employer in Canton, any overly burdensome requirements would negatively affect the town and Haywood County. Evergreen Paper Mill is also the wastewater treatment facility for Canton, and the only option for wastewater treatment available to the small town of about 5,000 residents. I understand that thorough completion of your job requires the Division to inspect all aspects of the discharge that impact the Pigeon River that our community enjoys. As the public comment period ends, however, I want to reach out to express the importance of this industry and its ability to support the residents of Canton. I urge you to take into consideration the balance of economic and environmental impacts as the Division issues its permit. Thank you for your attention and understanding, and please feel free to reach out if there are any questions. Respectfully, Representative Mark Pless 118th District — Haywood, Madison, and Yancey CIP