“Aerosolizing” Landfill Leachate

May 19, 2017.   A bill under consideration by the N.C. General Assembly,   House Bill 576 , requires the Department of Environmental Quality (DEQ) to allow “aerosolization of leachate and wastewater as an acceptable method of site management” at a lined municipal solid waste landfill and gives DEQ discretion to allow the practice at unlined landfills.  The bill passed the N.C. House and has been sent to the Senate.

A definition of terms.

“Leachate” is the liquid produced by water (including rainfall) percolating through landfilled waste. State rules require landfills to contain leachate onsite or treat the leachate before discharging it.   Treatment may occur onsite; offsite through a municipal wastewater treatment system; or by land-application of leachate to vegetation.  Since leachate would be considered to be wastewater, discharge often requires a Clean Water Act permit.

“Municipal solid waste landfill”  means a landfill — whether operated by a city, a county or a private waste management company — that receives household trash and  other commercial and industrial waste collected for disposal. MSW landfills do not dispose of hazardous waste or medical waste generated by diagnosis, treatment and  research facilities.

“Aerosolization”  involves spraying untreated landfill leachate into the air, allowing solids to resettle and  liquids to evaporate. Land-application systems direct leachate toward the ground for absorption by vegetation;  aerosolization systems direct the leachate high into the air to facilitate evaporation.   In 2016,  Republic Services (a major commercial landfill operator in the state)  made a presentation to the legislature’s Environmental Review Commission describing aerosolization and promoting the systems as a less expensive alternative to both conventional wastewater treatment and land application of leachate.

Scope of the bill. House Bill 576 requires DEQ to allow aerosolization of leachate at lined municipal solid waste landfills and allows DEQ to approve  aerosolization of leachate at unlined landfills.  The bill sets no standards for aerosolization of landfill leachate and does not expressly give either DEQ or the Environmental Management Commission authority to set standards for the practice. The bill also waives water and air quality permitting requirements for the aerosolization system if evaporation  of leachate “results in a zero-liquid discharge and is not a significant air contamination source”.

Questions:

1. Does aerosolization  of untreated landfill leachate from municipal solid waste landfills present a risk of exposure to  viruses and bacteria?    Unlike limited purpose landfills (such as those receiving only construction and demolition debris),  municipal solid waste (“MSW”) landfills receive food waste, diapers, and other personal care products that may carry viruses and bacteria. There does not seem to be readily available  information on  the potential for increased human or wildlife  exposure to viruses and bacteria as leachate becomes aerosolized and potentially wind-borne.

Without more information on the persistence of viruses and bacteria under different conditions, it is difficult to assess the risk of aerosolizing MSW leachate and develop management measures to limit the risk.  An EPA study found that viruses can survive in landfill leachate for weeks or months in moderate temperatures. A Nebraska study found that avian influenza viruses may survive in landfill leachate for up to two years.

North Carolina’s Division of Waste Management has approved four demonstration  projects for aerosolization of  landfill leachate; one involved a small-scale project at a Republic Services landfill.  The process has not been used to scale at a MSW landfill in North Carolina and  I have not found an instance of any other state permitting an evaporation system at a MSW landfill. As a result, data on the potential health risk of  aerosolizing MSW leachate either doesn’t exist or is not readily accessible.

2. Are existing  state rules sufficient to manage risk associated with aerosolization of MSW leachate?  North Carolina’s landfill rules require  a 50-foot buffer between each waste disposal area and the landfill property boundary. Rules that apply to landfills permitted before 2007 require a 50-foot buffer between waste disposal areas and a river or stream.  Landfills permitted since 2007 must maintain a  200-foot buffer between the waste disposal area and a perennial stream or wetland, although DEQ  can approve a narrower buffer (no less than 100 feet) based on local circumstances. See Session Law 2007-550.  A  500-foot buffer must be maintained between the waste disposal area and a home or water supply well.

A 2016  presentation  on leachate management by SCS Engineering noted some considerations in use of evaporation systems including:

♦ Risk of overspray and wind gusts

♦ Worker exposure to aerosolized leachate

North Carolina’s  waste management rules do not address these concerns and the potential risk to landfill workers or to people and wildlife beyond the landfill boundary.  Existing landfill buffer requirements were developed to manage the impact of buried waste and active landfill operations on waters, wetlands and adjoining property owners — not as a safety factor for aerosolization of landfill leachate and possible drift.

State  waste management rules require landfills to comply with air quality standards,  but the cross-referenced standards focus on air pollutants regulated under the Clean Air Act rather than bacteria and viruses. House Bill 576 exempts aerosolization systems from air quality permitting requirements as long as the system would not be a “significant air contamination source”. The bill does not define what would constitute a “significant” air contamination source.

The  knowledge gaps, lack of risk management guidance, and absence of standards for use of evaporation systems at municipal solid waste landfills suggests a need for  more study.

NC Senate: Proposed 2017 Budget

May 10, 2017.  Some highlights of the state budget proposed by Senate leadership as it affects environmental programs:

Money. The Senate budget continues  a nearly 10-year trend of cuts in environmental programs. An earlier post described some of the impacts of previous  budget cuts that began with the  2008 recession (including a 9% reversion of already-budgeted funds in 2009) and continued after the economy began to recover.

The Senate’s proposed budget for 2017 would reduce state appropriations to the Department of Environmental Quality (DEQ) by nearly $7 million.  That represents a 10% reduction in state appropriations and a 3% reduction in the department’s overall budget (which also includes federal grant funds and permit fees).

The reductions include:

♦ A $3.5 million discretionary cut,  which means DEQ will have to identify  reductions within the department’s operating budget.

♦  A $1 million transfer of funds  to the N.C. Department of Agriculture and Consumer Services (DACS) to challenge an EPA rule defining federal jurisdiction under the Clean Water Act. Under the McCrory administration, DEQ had joined  a number of other states in suing over the federal rule.  The Cooper administration dropped out of the litigation and the Senate provision would fund DACS  to continue the state’s participation in that litigation.

♦ The budget eliminates  56.5 positions from existing DEQ programs:

      32.5 positions in the Division of Environmental Assistance and Customer Service. Those cuts affect non-regulatory waste reduction, recycling,  water/energy efficiency and  permit assistance programs. The cuts would effectively eliminate DEQ programs that work with business/industry to voluntarily reduce waste generation which allows those businesses and industries  to reduce their regulatory burden and save money.

      14 regional office support positions. DEQ’s seven regional offices house frontline permitting and enforcement staff for multiple environmental programs. The legislature has targeted DEQ  regional offices for staff cuts in the past. This provision requires a reduction of an additional 2 positions in each  regional office. It is not clear which DEQ programs would be affected.

      5  administrative positions. The Senate bill  identifies specific jobs for elimination, including  DEQ’s Chief Deputy Secretary,  the Legislative Affairs Program Manager; a communications position; and the last two environment education positions remaining in the department.

      3 positions in the N.C. Geodetic Survey

      1 position in the Land Quality Section of the Division of Energy, Mineral and Land Resources

      1 position in the Division of Marine Fisheries

Policy provisions in the budget bill. The budget bill includes a number of changes in state law or policy related to environmental programs:

♦  Conditions on use of funds the state may receive as a result of the U.S. Environmental Protection Agency’s settlement with Volkswagen for violations of the Clean Air Act (Sec. 13.2 )  The Senate provision sets criteria for use of the funds and requires legislative approval of a DEQ plan for the funds.

♦  A provision  that allows the owners of old landfill sites to avoid environmental cleanup requirements by: 1. Accepting liability for onsite and offsite contamination; and 2. Providing financial assurance for any environmental harm.  There is an exception for property owners who did not receive compensation to accept local government waste for disposal. The provision affects a state program to assess and cleanup contamination associated with landfills and trash dumps that never met standards for solid waste landfills adopted in 1983. (iSec. 13.4).

♦  Changes to laws governing the Marine Fisheries Commission (Sec. 13.17) . The provision reduces the MFC from nine members to seven members and requires a super-majority of five  members to take any action — including adoption of rules. As with most state commissions, current law only requires a simple majority of the MFC to take most actions although a super-majority is required for adoption of fisheries management plans.

♦  A moratorium on wind energy projects (Sec. 24.2). The bill would prevent DEQ from issuing permits for new wind energy projects until December 31. 2020. During the moratorium, the bill would require a study of the impact of wind energy facilities on military operations in the state. Note; the process for approval of wind energy facilities already requires Federal Aviation Administration review and  input from military  installations.

Pigs (Again) Update

April 26, 2017. Yesterday, the Senate Agriculture, Environment and Natural Resources Committee approved a revised version of House Bill 467. The Senate changes resolve some of the questions  noted in the earlier post  about the bill’s impact on availability of punitive damages and compensation for injury other than lost property value.

The version approved by the Senate committee has a new subsection that reads:

(d) This Article does not apply to any cause of action brought against an agricultural or forestry operation for negligence, trespass, personal injury, strict liability, or other cause of action for tort liability other than nuisance, nor does this Article prohibit or limit any request for injunctive relief or punitive damages that are otherwise available.

The Senate language:

♦ Expressly allows an award of punitive damages against an agricultural or forestry operation based on existing standards in North Carolina law.

♦ Makes it clear that the bill does not limit compensation a plaintiff can receive under legal theories other than nuisance — including negligence, trespass, strict liability “or other cause of action for tort liability other than nuisance”.  In legal-speak, a  “tort” means a wrongful act injuring another person and recognized by law as the basis for a civil lawsuit. The injury may be damage to reputation or property as well as physical injury.

Under “strict liability”,  a person can be held legally responsible for harm even if there is no evidence of negligence. Historically, strict liability  has applied only to  a very narrow set of activities considered to be ultrahazardous —  the classic example has been use of explosives. Few (if any) activities associated with an agricultural or forestry operation would fall under strict liability standards.

As applied to agricultural and forestry operations,  the  most significant implications of the Senate language are:  1.  recognition of a plaintiff’s ability to  receive compensation (beyond fair market value of the property) for harm caused by negligence or trespass;  and 2. preservation of the potential for punitive damages in a particularly egregious nuisance case.

One reference in the new Senate language is not like the others — unlike  nuisance, negligence, or trespass, “personal injury” in itself is not a cause of action.  Instead, “personal injury” describes a type of harm the plaintiff may have suffered as a result of negligence, nuisance, trespass or some other tort.

The House version of H 467 limited damages for nuisance to fair market value or fair rental value of the property affected — apparently excluding compensation for health effects caused by the nuisance condition. Given the context, It isn’t clear  whether the Senate language  intends to allow compensation for  health effects in a nuisance action against an agricultural/forestry operation — or simply acknowledges the possibility of compensation for personal injury under another legal theory such as negligence.

The bill has now been referred to a Senate Judiciary Committee for review before going to the Senate floor.

Pigs (Again)

April 25, 2017. Two weeks ago, the  N.C. House quickly approved a bill limiting the money damages available to a plaintiff who wins a nuisance lawsuit against an agricultural or forestry operation. According to the bill title,  House Bill 467    “clarifies” the compensation available to a person whose property use has been negatively affected by agricultural or forestry activities.

The backstory.  In  2014, multiple nuisance lawsuits representing hundreds of North Carolina plaintiffs  were filed against Murphy Brown LLC (the grower subsidiary of Smithfield Foods)  in federal court. The plaintiffs  allege that odors, ammonia emissions, pests and other conditions associated with nearby swine farms negatively affect the use of their property.  A 2015 Charlotte Observer story provides a good overview of the claims.  The nuisance cases allege  many of the same problems described in a separate civil rights complaint concerning N.C. swine farms  filed in 2014. (That complaint remains under investigation by the U.S.  Environmental Protection Agency; see a previous post for more on the environmental justice complaint and EPA’s preliminary response.)

H 467 limits compensation available to a person who successfully proves an agricultural or forestry operation has created noxious conditions that interfere with use of their property. As originally introduced, the bill limited compensation available in both  pending and future lawsuits.  In a letter to the News and Observer, Rep. Jimmy Dixon described the bill as a necessary response to greedy lawyers who “want to sue farmers for outrageous sums without having to prove real damages”.   Although more broadly worded, H 467  clearly responded to the pending nuisance lawsuits against swine operations.

The General Assembly has acted to protect agricultural operations from nuisance lawsuits before. North Carolina has had a “right to farm” law since 1979.  Under G.S.  106-701, an agricultural  operation that has been in existence for a year cannot be considered a nuisance based on changing conditions around it.    “Right to farm” laws (adopted in nearly every state) attempt to protect  farms  from nuisance claims by people who later buy property near the farm  — presumably with knowledge of the existing agricultural activity.  In 1991, the N.C. legislature amended G.S. 106-701  to extend the same protection against nuisance lawsuits to forestry operations.

How H 467 Would Affect Compensation for Nuisance.  “Nuisance” means interference with the use and enjoyment of another person’s property.  For example, plaintiffs in the pending swine farm nuisance cases allege conditions created by farm operations (including odor, pests, and exposure to ammonia emissions)  have caused health problems and restrict outdoor activities.  H 467  limits the money damages that a plaintiff who successfully proves a case of nuisance can recover as compensation. Under the bill, compensation for a nuisance condition caused by an agricultural/forestry operation would be limited to either the fair market value of the property affected (for a permanent nuisance) or the fair rental value (for a temporary nuisance).

Historically, North Carolina case law has recognized other types of nuisance damages such as injury to a business.  One case allowed compensation for water pollution that damaged a downstream fishing/ fish processing operation.  Nuisance cases have also sometimes alleged health problems caused by the nuisance condition. H 467 does not allow a plaintiff to recover damages for a business loss  or compensation for negative health effects. The only compensation for an agricultural/forestry nuisance allowed under the bill would be the fair market value or fair rental value of the plaintiff’s property.  (I do not know whether compensation for health effects could be available under a legal theory other than nuisance.)

The bill may also bar award of punitive damages, which a court can award to punish and deter bad actors.    In  North Carolina, G.S. 1D-15 allows the court to award punitive damages  if the defendant has been found liable for compensatory damages (such as lost property value due to nuisance conditions) and the plaintiff proves one of three aggravating factors: 1. fraud 2. malice or 3. willful or wanton conduct.  Willful or wanton conduct means “the conscious and intentional disregard of and indifference to the rights and safety or others, which the defendant knows or should know is reasonably likely to result in injury, damage, or other harm.”  See G.S. 1D-5 (7).   Without further clarification,  H 467 may be interpreted to prevent an award of punitive damages even if the defendant willfully ignored the likelihood of harm to nearby property or acted in violation of state law.

The Scope of H 467. The bill, as first introduced, would have applied to both pending nuisance lawsuits and future lawsuits. Two prominent Republican lawyers, former N.C. Supreme Court Justice Robert Orr and former Representative Paul Stam, raised questions about the constitutionality of limiting compensation available under pending lawsuits.  In response to those concerns, the bill was amended to apply only to future nuisance lawsuits;  the House then adopted the bill as amended.

H 467 also contains a provision that extends the limitation on nuisance damages to “any private nuisance claim brought against any party based on that party’s contractual or business relationship with an agricultural or forestry operation”.  The language most likely  intends to protect parent corporations sued as a result of nuisance conditions created by a subsidiary or contractual supplier. For example, the limit on damages would apply to Smithfield Foods as the parent company of Murphy Brown LLC even though Smithfield Foods itself would not be considered an “agricultural operation”.

Status of the bill. Having passed the House, H 467 still needs Senate approval. The bill has been scheduled for discussion in the Senate Agriculture, Environment and Natural Resources Committee today. If the bill receives the committee’s endorsement, it would go back through the Senate Rules Committee before reaching the Senate floor. (Note: Bills often pop out of the Rules Committee without warning.)

Bonus literary tip — A  favorite children’s picture book by David McPhail describes a different kind of piggy  nuisance.

Pigs and the Civil Rights Act Part II: The Earth Justice Complaint

April 6, 2017. An earlier post described the intersection of environmental permitting and civil rights laws in the environmental justice movement. A  2014 environmental justice complaint filed by Earth Justice, REACH and the Waterkeepers  (the “Earth Justice complaint”)  argues the state of N.C. has discriminated against African-American, Latino and Native American residents by issuing a general permit for swine farm waste management systems that fails to protect those communities from air and water pollution. On January 12, the U.S. Environmental Protection Agency (EPA) sent a “Letter of Concern” to the Department of Environmental Quality (DEQ) about possible discrimination against minority residents as a result of the swine waste general permit. This post will look at the basis for the Earth Justice complaint and the significance of EPA’s letter.

First, what is a general permit? An individual permit covers a single facility; a general permit covers a category of facilities.   The  state general permit for swine farms covers swine farms with more than 250 animals (the number triggering the need for a  state permit).  Most  swine farms in North Carolina meet state permitting requirements by qualifying for coverage under the general permit. The general permit allows farms to use large open lagoons to store and treat swine waste and spray liquid waste on crops as a fertilizer. Permit conditions prohibit discharge of waste to rivers and streams; require measures to maintain the structural integrity of waste lagoons; limit spray irrigation of wastewater to avoid runoff and groundwater contamination; and require other management practices to reduce environmental impacts.  The Department of Environmental Quality (DEQ) has  reviewed and reissued the general permit about every five years since issuance of the first general permit in 1997.  The Earth Justice complaint concerns the most recent version of the general permit issued by DEQ in 2014.

For purposes of this post, I  will assume the Earth Justice complaint correctly describes the racial makeup of communities near large swine farms. The next question would be:  What does the Civil Rights Act of 1964 require of the state?

The Earth Justice complaint. The most significant issues:

Failure to do a disparate impact analysis.  The complaint contends DEQ failed to determine whether the state swine farm general permit has a disparate impact on African-American, Native American and Hispanic communities. A disparate impact analysis determines whether policies that appear racially neutral have a greater negative impact on minority communities in practice. It seems indisputably true that the state has not considered the racial or ethnic makeup of communities near swine farms in adopting laws, rules and permit conditions for operation of those facilities.

Failure of the swine farm general permit to protect minority communities. The complaint then argues the general permit fails to protect minority communities from environmental and health impacts, such as well contamination, odors,  and exposure to ammonia emissions.  The complaint questions the adequacy of specific permit conditions (such as setbacks between sprayfields and drinking water wells),  but essentially faults the state for continuing to allow existing swine farms to use conventional lagoon and spray field systems to manage swine waste.

Unlawful intimidation of a person who complains of discrimination.  After mediation efforts collapsed in 2016, the complainants added a new allegation of intimidation. EPA took the intimidation charge seriously and discussed evidence of intimidation at some length in the January 12, 2017 letter to DEQ.  The EPA letter cites reports of intimidation by swine farm operators or employees rather than by DEQ staff.  but emphasizes  DEQ’s responsibility to prevent or effectively respond to reports of intimidation.

This post will focus on the allegation that N.C.’s swine farm general permit fails to protect minority communities.

North Carolina’s history with lagoon and sprayfield systems. Lagoon and sprayfield systems are the most common method of swine waste management, but have also been controversial since the 1990s.  Explosive growth in North Carolina swine operations and several large swine waste spills raised public concern and attracted legislative attention.  In 1997,  the legislature tightened permitting requirements and put a temporary moratorium on construction of new  or expanded swine farms using conventional lagoon and sprayfield systems. The legislature extended the temporary moratorium several times before permanently barring construction of new or expanded swine farms using lagoon and sprayfield systems in 2007. As a result, all of the farms covered by the state general permit began operation before March 1, 1997.

Those existing swine farms have continued to use  lagoon and sprayfield systems while the state researched more environmentally  friendly alternatives. In  2000, the state commissioned a  N.C. State University (NCSU) study funded by  an agreement with Smithfield Foods and other swine producers to identify “environmentally superior” waste management technologies. Under the “Smithfield Agreement”,  Smithfield Foods agreed to convert company-owned swine farms to a waste management technology identified by NCSU as environmentally superior to the lagoon/sprayfield system and both operationally and economically feasible.   An “environmentally superior” technology would:

(1)        Eliminate the discharge of animal waste to surface water and groundwater through direct discharge, seepage, or runoff.

(2)        Substantially eliminate atmospheric emission of ammonia.

(3)        Substantially eliminate the emission of odor that is detectable beyond the boundaries of the parcel or tract of land on which the swine farm is located.

(4)        Substantially eliminate the release of disease-transmitting vectors and airborne pathogens.

(5)        Substantially eliminate nutrient and heavy metal contamination of soil and groundwater.

In 2006, NCSU’s  Dr. Mike Williams identified several innovative technologies that in combination met the environmental standards and could be operationally/economically feasible for use on new farms.  But Dr. Williams concluded none of the technologies would be economically feasible for use on existing farms because of conversion costs.     Dr. Williams has reviewed new generations of those technologies since 2006. Although costs for some technologies have come down, Dr. Williams  has still not designated any technology as  economically feasible for use on existing swine farms. Dr. Williams’ last update appears to have been issued in 2013.

On a separate track, the N.C. legislature included a set-aside for energy generated by capturing methane from swine waste systems as part of the state’s 2007 Renewable Energy Portfolio Standard (REPS).   One purpose of the set-aside was to encourage development of swine waste-to-energy systems that may have the additional benefit of reducing environmental impacts including odors and ammonia emissions. Several companies have begun development of swine waste-to-energy systems, but for technical reasons those projects have been slow to reach completion.

So the state has recognized potential problems with lagoon and sprayfield systems and invested time, energy and money in researching alternatives.  But the state has not required farms to adopt new technologies or imposed significant additional conditions on operation of existing systems. In questioning the decision to continue permitting lagoon and sprayfield systems, the Earth Justice complaint  puts that 20-year state policy debate and the decision not to impose additional regulatory requirements  in the context of racial discrimination.

The U.S. Environmental Protection Agency.  When mediation of the Earth Justice complaint fell apart in 2016, EPA reopened review of the complaint under Title VI of the Civil Rights Act.  EPA has not completed its investigation, but the  January 12 letter set out preliminary findings. The letter expressed concern that the state swine farm general permit may discriminate against minority communities and recommended specific steps to address the concern.  Some of the recommendations are procedural,  such as creation of a grievance procedure and designation of a DEQ staff person to coordinate response to environmental justice complaints as required under EPA rules. Other recommendations require review of  N.C. laws, rules and enforcement policies on swine operations.

Historically, federal environmental justice  guidance focused on the permitting process rather than environmental standards. EPA emphasized providing information and outreach to minority communities; encouraging minority participation in permit reviews; and considering impacts to minority communities in  environmental impact statements and federal air quality decisions. (See the earlier post for detail on the 1994 Federal Executive Order on environmental justice and the requirements of EPA rules.)  The January 12  EPA letter took the unusual path of recommending review of  both the general permit conditions and state rules to determine whether environmental standards should be changed to reduce impacts to minority communities.  EPA noted the Smithfield Agreement study and other research  identified practices that can minimize  impacts,  but are not required under current state rules.  Examples cited by EPA included: covering waste lagoons; limiting the time of day for land application of waste; eliminating some methods for handling dead animals.

Issued in the final days of the Obama administration, the EPA letter hints at a newly broad application of civil rights principles to state environmental policy decisions. The letter suggests  the Civil Rights Act may require state regulators to change environmental standards if existing standards do not adequately protect minority communities. Environmental regulations have traditionally been shaped by seemingly race-neutral factors  — health and ecological effects balanced by economic considerations. The Earth Justice complaint and EPA’s preliminary response question whether the result of the regulatory process has been race-neutral.   EPA provides little guidance to the state on the role race should play in environmental regulation beyond hinting that if the state can do more to reduce impacts to minority communities, it should. Perhaps the question in the background is this:  Can a  disproportionate impact on minority communities be a sign that the race/ethnicity of the people being affected influenced the state’s willingness to tolerate negative impacts?

What comes next?  Under the usual EPA process for environmental justice investigations, the state has an opportunity to respond to preliminary findings by either carrying out the EPA recommendations or suggesting a different response.   DEQ Secretary Michael Regan quickly indicated an intent to follow up on EPA’s concerns and work with stakeholders to reach a resolution. If the state does not satisfy EPA’s concerns and EPA makes a formal finding of discrimination, the ultimate penalty could be withdrawal of federal funds from DEQ.

In the meantime, EPA leadership has changed.    A week after EPA sent the January 12 letter, the Trump administration took office.   Budget cuts proposed by the Trump administration reportedly include elimination of EPA’s environmental justice program which provides grant funding and policy direction to environmental justice efforts. Although EPA would still  have an obligation to comply with the Civil Rights Act,  the budget proposal signals a lack of Trump administration concern about environmental justice concerns.   If that causes EPA to step back from environmental justice complaints, it  will likely be up to the state to decide whether and how to resolve these issues.

The Federal Budget and North Carolina’s Environment

March 24, 2017.  Last week, the Trump administration released the Trump Budget Blueprint which describes in very general terms the President’s budget proposals for federal agencies.  The Blueprint just opens the debate on the 2018 federal budget.  Congress will significantly influence the final budget and members from both parties have already expressed concern about some of Trump’s proposed budget cuts.   Percentage-wise, the deepest cuts in the Trump Budget Blueprint affect the Environmental Protection Agency.  As background for the coming federal budget debate,  this blogpost looks at the potential impact of the Trump budget plan on key state environmental protection programs.

Based on preliminary reports, the North Carolina Chapter of the Sierra Club provided a guide to the potential impact of the Trump budget the day before actual release of the Budget Blueprint. (Full disclosure — I assisted in preparation of the Sierra Club report.)  For each  major state environmental protection program, the report shows the percentage of the program budget currently funded by federal grants and the impact of cuts identified in the Trump budget plan. The report also provides information on other  DEQ activities supported by  federal grants that may be eliminated under the Trump administration’s  budget plan.

I want to focus on information in the Sierra Club report about impacts to Clean Air Act, Clean Water Act and Safe Drinking Water Act programs in North Carolina.   EPA  has delegated federal permitting and enforcement authority under those laws to the state’s Department of Environmental Quality (DEQ). EPA provides oversight to ensure the state programs meet federal requirements,  but DEQ has responsibility for day to day implementation.  DEQ issues Clean Water Act permits for wastewater discharges; Clean Air Act permits for  air emissions and air pollution control equipment; and Safe Drinking Water Act permits for public water systems.  DEQ also enforces water quality, air quality and drinking water standards.  In return for the state taking on those federal permitting and enforcement responsibilities, EPA provides program implementation or “categorical” grants to partially offset the cost.

The Trump Budget Blueprint does not provide detail on many cuts, but specifically proposes a 45% reduction in the EPA categorical grants that support basic state Clean Water Act, Clean Air Act and Safe Drinking Water Act programs. The tables below put the proposed cut in the context of each delegated program’s budget. Some notes on the numbers:

♦ “Total Need” means the complete budget (from all funding sources) for the delegated Clean Air Act, Clean Water Act and Safe Drinking Water Act program.

♦  Both the “total need” and federal funding numbers come from the certified state budget for the 2016-2017 fiscal year.

♦  These numbers only cover the EPA categorical grants for the delegated federal permitting/enforcement programs.  The numbers do not reflect separate federal grants for targeted research or pollution reduction projects like  the Albemarle-Pamlico National Estuary Program. Some of those federal grants reportedly have been targeted for elimination in Trump administration budget plans.

♦ The proposed federal funding cuts shown below are higher than those show for these same programs in the Sierra Club report because the final Trump Blueprint increased the percentage reduction over those reported earlier.

N.C. Clean Air Act Implementation

Total Need Federal Grant % Federally Funded Proposed Federal Funding Cut
$4,854,105 $2,482,845  50% – 45%

Clean Water Act Program Implementation 

Total Need Federal Grant % Federally Funded Proposed Federal Funding Cut
$14,160,554 $6,662,950   50%  -45%

Safe Drinking Water Act Program Implementation 

Total Need Federal Grant % Federally Funded Proposed Federal Funding Cut
$5,870,612 $3,316,895 50% – 45%

In sum: EPA grants provide 50% of the funding for each of the major environmental permitting and enforcement programs delegated to the state under federal law. A 45% reduction in the federal grant would result in a cut of nearly 25% to each of those state programs.  As discussed in an earlier post, many N.C. environmental protection programs have already experienced significant reductions in state funding since 2009-2010. The water quality program has been particularly hard hit.

Deep cuts to the federal grants would force the state to decide whether to make up the loss of federal funds with increased state appropriations from tax revenue or higher permit fees. The alternative would be to accept further erosion of those programs. The question may be particularly acute for the air quality program which is now entirely supported by the federal grant and permit fees.

You can find the entire Sierra Club report here .

NOTE: The original blog post has been revised to more accurately describe the release date for the Sierra Club guide and to note that information on  percentage reductions to these particular programs changed (for the worse) after release of the Sierra Club report. 

Pigs and The Civil Rights Act of 1964

March 7, 2017.  In one of his earliest actions as North Carolina’s Secretary of Environmental Quality, Michael Regan sent a  letter to the editor publicly responding to a U.S. Environmental Protection Agency (EPA)  “letter of concern” about N.C. swine farms.   EPA sent the letter as part of an ongoing investigation of a  2014 environmental justice complaint against the N.C. Department of Environmental Quality (DEQ)  under Title VI of the Civil Rights Act of 1964. The complaint filed by Earth Justice, the Rural Empowerment Association for Community Help (REACH) and the Waterkeeper Alliance argued that a state permit for swine waste systems discriminates against African-Americans, Latinos and Native Americans by allowing members of those minority communities to be disproportionately harmed by air and water pollution associated with the swine waste.

An attempt at mediation of the complaint failed in 2016. The break down in negotiations led  to a new allegation that DEQ violated federal rules against intimidating a person who has complained of discrimination.   In 2016,  EPA resumed active investigation of both complaints. (See this NC Policy Watch story for a helpful timeline of action on the complaint.) EPA’s January 12, 2017 letter of concern identifies gaps in the state’s environmental justice response and also recommends steps DEQ should take to resolve the complaint.

This is the first of two blog posts looking at the intersection of civil rights law and environmental protection programs. The first blog post will describe the legal basis for  the environmental justice movement and some of the practical challenges of applying civil rights law to environmental permitting decisions.  A later blog post will provide more detail on the Earth Justice/REACH/Waterkeeper Alliance  complaint and EPA’s recommendations.

The Civil Rights Act of 1964 and the environment.  Under Title VI of the Civil Rights Act of 1964, no person “can be denied the benefits of, or be subjected to discrimination under any program or activity receiving Federal financial assistance” based on race, color or national origin. (See 42 U.S.C. § 2000d.)  The anti-discrimination law applies to any state agency receiving federal grant funding, including DEQ programs to implement the Clean Air Act, Clean Water Act, Safe Drinking Water Act and other federal environmental laws.

Federal rules applying the Civil Rights Act to  EPA-funded agencies  (40 CFR Part 7) provide a little more detail, but focus on discrimination in employment, contracting and location of public infrastructure.  Those  nondiscrimination requirements mirror conditions on many other types of federal contracts and grants.  The rules also require state programs to designate a person to receive discrimination complaints and to provide a grievance procedure.

Over time, a movement developed to  give greater meaning to language in the Civil Rights Act  guaranteeing the “benefits” of federally funded environmental protection programs without regard to race, color or national origin. The environmental justice movement grew out of concern that minority communities had been denied the benefits of environmental protection in several ways, including:

♦ Disproportionate siting of facilities associated with environmental risk (such as  hazardous waste facilities)  in minority and low income communities.

♦ Greater exposure of minority residents to high levels of pollution and environmental contamination.

♦ Weak enforcement of environmental standards in minority and low income communities.

Over the last thirty years,  a number of studies have looked at the relationship between race,  income and risk of exposure to environmental harm. The National Institute of Environmental Health Services has published a bibliography of studies related to environmental justice that can be found here .

Environmental permitting as a civil rights issue.    Many histories of the environmental justice movement cite EPA’s permitting of a  hazardous waste landfill in a majority  African-American community in  North Carolina as an early environmental justice flashpoint. See: EPA’s environmental justice timeline and the federal Department of Energy’s brief  history of the environmental justice movement.  The 1982 construction of the Warren County landfill, built for disposal of PCB-contaminated soil,  highlighted a new civil rights question:  Do permit decisions made under racially neutral environmental standards still result in a greater pollution burden on minority and low income communities?   

The political and legal battle over the Warren County landfill raised two interconnected issues common to many environmental justice controversies: 1.  Was the decision to put the PCB landfill  in a community with a largely  minority population (greater than 60% African-American) influenced by race?  The concern was not that state officials had an affirmative intent to harm African-Americans, but that the state rejected more suitable sites to  put the landfill in a community where residents had little political power to resist. 2. Did the U.S. EPA permit for the landfill fail to provide adequate safeguards against environmental harm?

Immediately after construction of the Warren County landfill,  two members of Congress asked the General Accounting Office (GAO) to look at the  first question.  The GAO study of hazardous waste landfills in  eight southeastern states (including North Carolina)  found in part :

There are four offsite hazardous waste landfills in [the] eight States. Blacks make up the majority of the population in three of the four communities where the landfills are located. At least 26 percent of the population in all four communities have income below the poverty level and most of this population is Black..

Early efforts to consider disproportionate impacts to minority communities in environmental permitting.   An Executive Order and Memorandum on Environmental Justice issued by President Clinton in 1994 represents one of the first federal efforts to address environmental justice in permitting.  The goal of the Executive Order and memo, which directly applied only to federal agencies,  was to   “prevent…minority communities and low-income communities from being subject to disproportionately high and adverse environmental effects”. The memo directed federal agencies to:

  1. Include impacts to minority and low income communities as part of  environmental review.  Environmental impact statements prepared  under the National Environmental Policy Act (NEPA) should evaluate the human health, economic and social effects on minority  and low-income communities and require mitigation of significant impacts.
  2.  Reach out to the community.  During the environmental review, the federal agency should consult with the community about potential effects and mitigation measures and make meetings, documents and notices easily accessible.
  3. Consider air quality impacts of federal agency actions on minority and low-income communities.  EPA should  ensure that review of the air quality impacts of a  proposed federal action includes consideration of the  impact on minority and low-income communities. 
  4. Provide access to information.  Federal agencies should provide  minority and low income communities with  access to public information on  human health,  environmental planning, regulatory requirements and enforcement standards. 

In short, the executive order and memo focused on process —  outreach, information, analysis of impacts and mitigation.  It did not change any environmental permitting standards.

What does the Civil Rights Act of 1964 require of federally-funded state environmental permitting programs? EPA has struggled to provide clear guidance to the states on how to apply the Civil Rights Act of 1964 in state environmental permitting programs.  A 2014 EPA plan, Considering Environmental Justice in Permitting , set out a roadmap for considering environmental justice in federal and state permitting. EPA’s implementation plan proposed several years of additional work  with a goal of completing work on the guidance in 2017.

The challenges.  Addressing environmental justice concerns in permitting  has some basic challenges:

♦ Civil rights laws and environmental protection laws speak different languages. Civil rights law focuses on discrimination based on race, color or nationality;  environmental laws and rules set permitting standards based on public health and ecological impacts without regard to community demographics.  An environmental permitting standard may not always be effective, but on its face the standard applies the same way in wealthy subdivisions, poor neighborhoods, and low income communities.

♦ Permitting agencies rarely have the authority to decide where a proposed  facility will be located.  DEQ cannot decide that a swine farm or  landfill or hazardous waste storage facility would best be located here rather than there.  As the permitting agency, DEQ responds to a permit application that proposes a specific type of facility in a particular location. DEQ can deny the permit — but only if the project would violate  environmental standards in state law or rules and those standards do not make community demographics a  permitting criteria. Instead, the standards focus on environmental and public health impacts without regard to the nature of the community likely to be affected.

♦  Race-neutral factors like the availability of suitable land and land cost often drive the permit applicant’s site selection.  Large acreage at low cost often correlates to rural land, low income communities and a greater impact on minority populations.

What permitting programs can do. State environmental permitting programs can use the kind of outreach described in the Clinton memo to actively bring minority residents into the permitting process.  Many state environmental programs now also have permit criteria that include consideration of  the cumulative impacts of proposed and existing facilities  in the community.  That allows the permitting agency to look beyond the individual impact of a proposed facility and prevent environmental harm caused by clustering multiple  pollution sources in a minority or low income community.

Does the Civil Rights Act require more? The environmental justice  complaint about N.C. swine farms and EPA’s letter of concern suggest the state’s obligations may go further. More about that in the next post.

The State of the Environment Department: By the Numbers

January 12, 2017. Governor Roy Cooper inherits an environment department that looks very different than it did four years ago. The new Department of Environmental Quality (DEQ) is much smaller in size and scope than the old Department of Environment and Natural Resources (DENR).  Since 2011, legislators have moved conservation and research programs out of the department.  DEQ’s environmental protection programs  lost non-regulatory conservation and research partners like Soil and Water Conservation, Forestry, Parks and Recreation and the Museum of Natural Sciences.

The environmental programs remaining in DEQ also lost a significant number of positions.  The incoming administration will face some immediate challenges in providing timely permit reviews, inspections and compliance assistance with staffing at levels inadequate to respond to an upturn in economic activity.

About the numbers. The numbers below come from information provided by DEQ during the transition between the McCrory and Cooper administrations; reports submitted to the legislature by DENR/DEQ; and legislative budget documents.

Environmental programs experienced some position reductions in  2009-2010 due to recession-driven budget cuts; those cuts tended to focus on vacant positions. Since 2011, the nature of the position cuts have changed.  Instead of setting a budget reduction target and giving the department flexibility to meet it,  the legislature increasingly identified specific positions for elimination or focused cuts on particular programs in the department. Many of the targeted reductions affected water quality programs (including stormwater and sedimentation control) and multi-agency staffing in the department’s seven regional offices.

DEQ by the numbers:

18%   Percentage reduction in water quality and water resources staff.

41% Percentage reduction in water quality/water resources staff in DEQ regional offices. The seven regional offices house staff from multiple DEQ programs. Staff based in the regional offices do initial site visits for permit applications; provide technical assistance; and inspect permitted facilities for their respective programs.  A 2011 budget provision specifically targeted the regional offices for position cuts: 3 administrative positions; 6 positions in the Asheville Regional Office; and another 21 positions among the seven regional offices to be either eliminated or shifted from state funds to another funding source. The cuts in regional office staff came on top of program-specific position cuts, further reducing program staff and limiting the number of staff geographically accessible to the public.

45%   Percentage reduction in state sedimentation program staff since 2008; staffing levels fell from 65 in 2008-2009 to 36.9 in 2015-2016. The sedimentation program implements the state law requiring erosion control measures on active construction sites to prevent sediment from reaching rivers, lakes and streams.

12,000  The number of construction sites the state sedimentation program staff has  responsibility for monitoring.

Every 12-14 Months: Frequency of state inspection of  sedimentation sites based on current staffing levels.

2 Years. The average time required to issue  a Clean Water Act wastewater discharge permit. (The National Pollutant Discharge Elimination System or “NPDES” permits.)

42%  The percentage of industrial discharge NPDES permits that have expired and not yet been renewed with updated permit conditions.

34%  The percentage of major municipal NPDES permits that are expired and need renewal.

20% Reduction in Division of Coastal Management staff since 2010. DCM  issues permits for major development projects affecting coastal resources; supports public beach access projects;  and manages the state’s coastal reserve sites for research and education activities.

40% Reduction in core Division of Marine Fisheries staff since 2011. (The figure does not reflect the Shellfish Sanitation staff moved into DMF from the Division of Environmental Health in 2012.)

27.9 Administrative positions eliminated department-wide since 2015. (Budget, purchasing, IT, personnel, and public information staff.)

9%    Percentage of DEQ’s authorized positions that are currently vacant (161). By comparison, the much larger Department of Environment and Natural Resources had only 40 unfilled positions in the summer of 2012.

3  Programs or services entirely eliminated through budget cuts since  2009:  the Neuse River Rapid Response Team (provided response to fish kills and pollution incidents in the Neuse River); the Office of Environmental Education; and the Division of Water Quality’s well drilling team (drilled monitoring wells used to investigate groundwater quality/quantity).

Some of the consequences. Loss of staff has already lengthened some  permitting times and the department’s permitting programs are not in a good position to respond to increased development activity as the economy continues to improve. Staff reductions have also affected DEQ’s ability to provide compliance assistance and enforce environmental laws. The U.S. Environmental Protection Agency (EPA) has expressed concern about the failure of federally delegated programs in DEQ to follow the department’s enforcement policy.  EPA has also questioned the  adequacy of the state’s stormwater program.

Changing Cleanup Standards for Leaking USTs

Oct. 26, 2016. In June, the Department of Environmental Quality (DEQ) released new guidance on remediation of groundwater contamination caused by leaking petroleum underground storage tanks (USTs). The guidance document significantly changes the approach to remediation of  high risk UST sites. Under rules adopted by the Environmental Management Commission (EMC), groundwater contamination at high risk UST sites must be remediated to meet state groundwater quality standards if that is feasible. 15A NCAC 2L.0407(b).

The new guidance directs environmental consultants to assume the cleanup standard for most high risk sites will be  “Gross Contaminant Levels”, which represent contamination at  levels  as much as 1000 X the  groundwater protection or drinking water standards. The guidance raises a number of questions about the impact of more limited cleanup on groundwater and property owners; consistency with EMC rules; and whether the new guidance should have gone through rulemaking  to allow for public comment and adoption by the EMC.

UST Rules. The UST program operates under “risk-based” remediation  rules  that allow less groundwater remediation on sites posing a low risk to public health, safety and the environment and require more extensive remediation on high risk sites.  Existing UST rules require petroleum-contaminated sites to be classified as high, intermediate or low risk based on site conditions and assign a cleanup standard to each risk classification. High risk sites must be remediated to meet the state’s groundwater protection standards to the extent feasible. The groundwater standards set limits  for individual contaminants at the level safe for unrestricted use of the groundwater  — including use as a drinking water supply. Intermediate risk UST sites only have to be remediated to “Gross Contaminant Levels”, which allow contamination at levels as much as 1000 X  the groundwater protection standard or drinking water standard to remain at the end of remediation. Low risk sites may not require any remediation even though contaminant levels  greatly exceed groundwater protection standards.

Under existing rules adopted by the Environmental Management Commission, UST risk classifications are based on a snapshot of conditions around the petroleum release and the likelihood that petroleum contamination will reach water supply wells or create some other imminent health, safety or environmental hazard.  Under  EMC rules (15A NCAC .0406), a UST site is considered “high risk”  if:

(a)  a water supply well… has been contaminated by the release or discharge;
(b)  a drinking water well is located within 1000 feet of the contamination source;
(c)  a water supply well not used for drinking water is located within 250 feet of the source;
(d)  the groundwater within 500 feet of the contamination source could be a future water supply source because there is no other source of water supply;
(e)  the vapors from the discharge or release pose a serious threat of explosion due to accumulation of the vapors in a confined space; or
(f)  the discharge or release poses an imminent danger to public health, public safety, or the environment.

New DEQ guidance on high risk sites. 
North Carolina Petroleum UST Release Corrective Action Phase Project Management: A Calibrated Risk-Based Corrective Action Decision & Implementation Guide, effective June 1, 2016, moves away from the principle of  remediating groundwater at high risk UST sites  to meet state groundwater protection standards.  Instead, the guidance assumes most  sites classified as “high risk” can be remediated only to Gross Contaminant Levels (GCLs).

The guidance document cites data indicating that groundwater contamination plumes contract over time, reducing risk to nearby wells that have not already been contaminated.  Based on state laws directing DEQ to consider factors that limit  risk to nearby wells, DEQ has directed remediation companies to assume older high risk UST sites can be remediated to Gross Contaminant Levels. Under the new guidance, the key factor will be the stability of the contaminant plume. If the plume has stabilized or become sufficiently predictable for DEQ to conclude the contamination does not represent an expanding threat, the cleanup will largely rely on “monitored natural attenuation” of the contamination (natural reduction in contaminant concentrations over time) and the cleanup standard will be based on the GCLs.

A few observations about the new guidance:

♦ The guidance document acknowledges the new remediation guidelines have been driven by a  lack of sufficient state funds to fully remediate even high risk UST sites.

♦ The idea of reviewing high risk classifications based on the age of the site and stability of the plume makes sense, but the new guidance appears to focus on just one risk factor — proximity of the UST’s petroleum release  to existing water supply wells.  The guidance shifts to much more limited cleanup as long as the plume has stabilized and/or alternative water supply is available to well owners affected by petroleum contamination.

The guidance does not appear to consider another factor listed in the Environmental Management Commission’s  risk classification rule — whether groundwater within 500 feet of the UST release may be needed as a future water supply. In areas where groundwater represents the only local water supply source, the EMC risk classification rule intended to protect the groundwater as a potential water supply even in the absence of existing water supply wells.  The new guidance document seems to focus solely on the potential impact to existing wells.

♦  Reliance on GCLs as the final cleanup standard means higher levels of petroleum contamination remain in the groundwater at the completion of remediation. In the absence of extended monitoring, making GCLs the default remediation standard for plumes close to existing water supply wells or in areas where water supply wells may be installed in the future transfers risk from the UST owner to nearby property owners.  UST risk classifications rely on a snapshot of conditions around the petroleum release.  A change in conditions can lower risk (as the guidance document assumes), but conditions can also change in ways that increase risk.  Installation of a new water supply well  or changed  use of an existing well can affect the behavior of the contaminant plume, exposing well users to petroleum contamination.  Given that possibility,  greater monitoring of  high risk sites remediated only to gross contaminant levels may be needed.

♦  Since the guidance document changes implementation of the UST rules,  it likely would be considered a “rule” under the state’s Administrative Procedure Act.  In addition to creating a presumption that  gross contaminant levels will be the cleanup standard for all UST sites — a departure from the existing EMC rule — the guidance document establishes specific triggers for reexamination of an existing site classification. The new DEQ guidance may or may not be good policy, but any policy generally applicable to UST owners and operators would be considered a rule and the Environmental Management Commission has rule-making authority over the UST program. Failure to use the rule-making process also sidesteps any opportunity for comment by UST owners/operators, remediation companies, adjacent property owners or other members of the public on the potential impact of the changes.

♦  The change in UST remediation standards is only the latest step back from protection of groundwater as a water supply resource important to the state’s future.  A significant number of North Carolinians rely on groundwater for water supply either; around 50% of the population drinks water from private water supply wells or well-based water systems. Farms  often rely on water supply wells for irrigation and water supply for animals. In recent years, the direction of state policy has moved consistently toward less remediation of groundwater contamination because of the cost to the state or the cost to the polluter. The question is whether those cost/benefit calculations given enough consideration to the long-term costs of groundwater contamination.

The Ongoing Controversy Over Coal Ash and Well Contamination

August 21, 2016. The controversy over changing state advice to well owners near Duke Energy’s coal ash impoundments has exploded again over conflicting accounts — within the McCrory administration — of the basis for “do not drink” letters sent in 2015 and later withdrawn. Two earlier posts here and here provide background on groundwater and drinking water standards for vanadium and hexavalent chromium (the contaminant of greatest concern).

In 2015, the N.C. Department of Health and Human Services (DHHS) sent health advisory letters to the owners of wells with concentrations of hexavalent chromium (chromium 6 or Cr-6)  above 0.07 ppb.  The 0.07 ppb threshold represented the concentration of Cr-6 associated with an increased cancer risk of 1:1 million. In early 2016, the McCrory administration rescinded most of the letters and advised well owners that water meeting the federal drinking water standard for total chromium  (100 ppb) should be considered safe to drink. The total chromium standard covers both chromium-3 and the more toxic chromium-6.

Within the last two weeks, the conflict between DHHS and the Department of Environmental Quality (DEQ) over the content of the health advisory letters  again made headlines. This post describes the roles of  DHHS and DEQ in groundwater contamination incidents; explains the criteria for developing groundwater standards; and makes a few observations on the implications of the conflict for future groundwater contamination incidents.

The role of DHHS in groundwater contamination incidents and development of groundwater standards. When contamination affects drinking water wells,  DHHS toxicologists often advise on the potential health effects. If there is no existing drinking water or groundwater standard for the specific contaminant, the toxicologists use established protocols to assess the contaminant’s short-term  and long-term health effects. Acute health effects include organ damage, skin rashes, respiratory problems and other short to intermediate term problems. Long-term health effects often focus on increased cancer risk. DHHS may also work with the Department of Environmental Quality (DEQ) to develop a health-based groundwater standard for a contaminant that has no existing numeric standard in state or federal rules.  DHHS toxicologists advise rather than regulate. DEQ has responsibility for enforcement of state groundwater standards and oversight for groundwater cleanup.

Cancer risk as a factor in setting groundwater standards and assessing groundwater contamination.  Both state and federal environmental agencies consider increased  cancer risk as a factor in assessing groundwater contamination and setting goals for groundwater cleanup.  North Carolina’s  groundwater rules list a  1:1 million increased cancer risk as a primary criteria for setting groundwater quality standards.  In 15A NCAC 2L.0202(d),  the rules require a state groundwater standard to be based on the lesser  of  the

(1)  Systemic threshold concentration calculated as follows: [Reference Dose (mg/kg/day) x 70 kg (adult body weight) x Relative Source Contribution (.10 for inorganics; .20 for organics)] / [2 liters/day (avg. water consumption)];

(2)  Concentration which corresponds to an incremental lifetime cancer risk of 1×10-6;

(3)  Taste threshold limit value;

(4)  Odor threshold limit value;

(5)  Maximum contaminant level[the federal drinking water standard]; or

(6)  National secondary drinking water standard.

Based on recent public statements by DHHS scientists, DHHS and DEQ staff in the Division of Waste Management calculated increased cancer risk associated with Cr-6 exposure using a standard protocol. The two agencies concluded that  0.07 ppb represented the break-point for the 1:1 million increased cancer risk.  The  DEQ/DHHS calculation of increased cancer risk associated with > 0.07 ppb of  Cr-6  then became the basis for  “do not drink” letters sent to well owners in 2015.

Health advisories based on groundwater contamination. DHHS has long worked with DEQ staff  to  advise well owners on health risks associated with groundwater contamination. Both DHHS and DEQ report to the Governor, creating  a strong incentive for the agencies to agree on assessment of public health risk.  Environmental and public health experts may debate  the appropriate standard for a contaminant,  but  public conflict between the two agencies is  extremely unusual and may be unprecedented.

The split between DHHS and DEQ over advice to well owners.  According to DHHS scientists, the 0.07 ppb standard for CR-6 based on increased cancer risk reflected the consensus of DHHS public health experts and staff in DEQ’s Division of Waste Management.  DEQ leaders, however, encouraged DHHS to advise well owners that water exceeding the 0.07 standard should still be considered safe to drink as long as Cr-6 levels did not exceed the federal drinking water standard of 100 ppb.  DEQ publicly raised  concerns about the DHHS health advisories  in a January 2016 presentation to a legislative committee. The presentation compared the 0.07 ppb standard  to the federal drinking water standard and to standards adopted by other states.  Within a month after the legislative presentation,  DEQ and DHHS sent new letters advising well owners that well water with Cr-6 levels below 100 ppb should be considered safe to drink because the water meets federal drinking water standards.  Recent  statements by state toxicologist Ken Rudo and state epidemiologist Megan Davies (who has resigned over the issue) make it clear that DHHS public health experts did not believe the existing state and federal standards for total chromium sufficiently protected human health and objected to the revised letters.  The 100 ppb standard for total chromium represents an increased cancer risk orders of magnitude higher than the 0.07 ppb standard — 1:700 increased risk of cancer versus  1:1 million increased risk.

Some observations:

♦   The state’s groundwater standard remains 10 ppb for total chromium and the Coal Ash Management Act of 2014 directs DEQ to use state groundwater standards in assessing drinking water wells around coal ash impoundments.  DEQ  has not  proposed a specific state groundwater standard for Cr-6 based on the DEQ/DHHS cancer risk calculation. As a result, the 0.07 ppb standard remains a health advisory rather than an enforceable groundwater standard. The federal drinking water standard of 100 ppb does not apply to either groundwater assessment or evaluation of well safety near coal ash impoundments.

♦  According to Secretary Donald van der Vaart, DEQ does not question the DHHS calculation of increased cancer risk associated with Cr-6.   Given the gap between the total chromium standard of 10 ppb and the 0.07 ppb threshold for a 1:1 million increased cancer risk associated with chromium-6,  the  total chromium standard does not meet a basic criteria for a N.C. groundwater standards — which requires a groundwater standard to be based on the 1:1 million increased cancer risk —  and should be reviewed.

♦ State and federal agencies routinely use the  1:1 million increased cancer risk as a criteria  for developing health-based standards for permitting  and to set environmental remediation goals.  Both state and federal programs also recognize that there may be a need to move off the 1:1million cancer risk criteria in individual cases because it is not technically or economically feasible to meet the standard.  In those instances, the agency can adjust a groundwater cleanup goal  (for example) to reflect the limits of available technology.

Going forward.  As a practical matter, the difference between the DHHS health-based standard and the state groundwater standard has no direct enforcement consequences for Duke Energy. For the time being, the applicable state groundwater standard continues to be the total chromium standard of 10 ppb.  Under 2016 amendments to Coal Ash Management Act,  Duke Energy must  provide a permanent alternative water supply to all well owners within 1/2 miles of a coal ash pond which makes both the  cancer risk  threshold and the state groundwater standard irrelevant to decisions about alternative water supply.

Assuming no change in the state groundwater standard, the 10 ppb total chromium standard will also drive development and approval of  groundwater remediation plans for areas surrounding the coal ash impoundments.

The cancer risk threshold for Cr-6  does raise questions about the adequacy of the state’s  total chromium standard.  The DHHS calculation of cancer risk suggests the  existing total chromium does not meet one of the basic criteria for state groundwater standards — protection against a 1:1 million increase in cancer risk.

The public conflict between DEQ and DHHS raises two other questions —

Should  state environmental and public health agencies inform citizens  of the health risk  associated with contamination that meets existing regulatory standards? DHHS public health officials felt an obligation to inform well owners of the higher cancer risk potentially associated with elevated levels of CR-6; DEQ took the position that the warnings were unnecessarily alarming if the well water met federal drinking water standards.

The other question is more technical and would inevitably come up in any reevaluation of the groundwater standard for chromium: Is there any economic or technical reason not to use the more stringent 0.07 ppb standard as the basis for assessing risk of human exposure to Cr-6 in groundwater and setting groundwater remediation goals?  The choice of a standard has implications  beyond the immediate controversy over coal ash impoundments and so far there has not been a practical critique of the 0.07 ppb threshold based on technology or cost.  The reason behind DEQ’s objection to the DHHS 0.07 ppb threshold as a basis for health advisories still isn’t entirely clear since it appears most  public water systems  in the state meet the DHHS health-based standard. Those that don’t meet the 0.07 ppb standard come much closer than a number of the wells  DEQ argued should be considered safe because the water meets the federal drinking water standard of 100 ppb.