For eight consecutive months in 2023, Sacramento County’s Kiefer Landfill pumped benzene, vinyl chloride, and toluene into the air near Sloughhouse, California — and the total fine for all of it came out to $196,936 (about what a median Sacramento family earns in two and a half years of full-time work).

Eight Months of Broken Rules, One Broken System

The Kiefer Landfill sits at 12701 Kiefer Boulevard in Sloughhouse, a rural stretch of Sacramento County. It is a Municipal Solid Waste landfill — the kind that takes in household garbage, construction debris, and the ordinary refuse of a metro area of over 1.5 million people. That waste decomposes underground and produces landfill gas, a toxic cocktail that federal law requires operators to actively capture before it escapes into the atmosphere.

Federal regulations under the National Emission Standards for Hazardous Air Pollutants (NESHAP) are explicit: the gas collection system must pull gas from every waste cell that has held solid waste for five or more years. The system must operate under negative pressure at every wellhead. The extraction rate must be sufficient to actually contain the gas. These are not optional guidelines. They are legally binding requirements that have been in place since 2003.

Sacramento County failed every single one of them — simultaneously — for eight months.

The Collapse of the Gas Collection System

According to the EPA’s Consent Agreement and Final Order, the County was in the middle of construction work on Module M-1, the top deck of one of the landfill’s major waste cells. That deck covers approximately 54 acres — roughly 40 city blocks — and the construction required depositing no less than five additional vertical feet of soil, totaling roughly 657,000 cubic yards of material. That is enough soil to fill over 70,000 standard dump trucks.

During that construction period, the gas collection and control system failed to function as required. The County failed to collect gas at a sufficient extraction rate. Wellheads exhibited positive pressure instead of the required negative pressure. Gas escaped from waste cells that had been in place for five or more years. And the County failed to minimize the downtime of the Gas Collection and Control System or take the emergency shutdown steps required when the system goes offline.

Construction Was Not an Excuse. The Law Says So Explicitly.

Federal rules under 40 C.F.R. § 63.1960(e) are direct on this point: the NESHAP provisions apply at all times, including during startup, shutdown, and malfunction events. The maximum allowable downtime for collection systems under an SSM (startup, shutdown, malfunction) event is five days. The County’s violations ran for 232 days.

Even during construction, the law required the County to shut down the gas mover system and close all venting valves within one hour if the control system stopped working. The law required efforts to repair the system to begin immediately and be completed as fast as possible. The EPA found the County failed to do this in a manner consistent with good air pollution control practices.

The Non-Financial Ledger: What No Fine Can Buy Back

Sloughhouse is not a wealthy community. It is a rural area east of Sacramento, the kind of place where people live because land is cheaper and the air is supposed to be cleaner than the city. People choose to raise families there. They grow up there. They breathe there, every single day, without knowing what is in the air around them.

From January 24 to September 12, 2023, that air contained uncontrolled landfill gas from one of the largest municipal waste facilities in California. The law identifies the specific chemicals that escape from this type of landfill: benzene, a confirmed human carcinogen linked to leukemia and other blood cancers; vinyl chloride, a known carcinogen linked to liver cancer; toluene, which damages the central nervous system, kidneys, and liver; and ethyl benzene, classified as a possible human carcinogen. These are not speculative dangers. The EPA’s own 2003 rulemaking establishing the Landfill NESHAP states explicitly that each of these HAPs “can cause adverse health effects.”

The people of Sloughhouse and surrounding areas had no say in any of this. They received no public notice when the gas collection system started failing in late January 2023. There is no record in the Consent Agreement of any community notification, any public health advisory, or any outreach to residents about the eight months of toxic air pollution happening in their backyards. The County signed the agreement, wrote the check, and moved on.

The violation also exposes a deeper structural betrayal. The gas collection rules that Kiefer violated have been federal law since 2003. Sacramento County has operated this landfill under a Title V permit since January 2002. The permit renewal process has been pending since January 2016. The County has known for over two decades exactly what the rules are. The technical requirements are not ambiguous. The obligation to maintain negative pressure at wellheads, to collect gas from mature waste cells, and to minimize system downtime are written plainly in both the federal regulations and the facility’s own operating permit. The County chose to proceed with a major 54-acre construction project on top of a landfill module, moving 657,000 cubic yards of soil, without ensuring the gas collection system stayed operational beneath it.

Legal Receipts: Straight from the Document

These are direct quotes and exact factual statements from the EPA’s Consent Agreement and Final Order. No paraphrasing. No softening. Read them as written.

“The HAPs emitted by MSW landfills include, but are not limited to, vinyl chloride, ethyl benzene, toluene, and benzene. Each of the HAPs emitted from MSW landfills can cause adverse health effects.” — EPA Consent Agreement and Final Order, Paragraph 9, citing 68 Fed. Reg. 2227 (January 16, 2003)

“From January 24, 2023, to September 12, 2023, the County was in violation of the Landfill NESHAP.” — EPA Consent Agreement and Final Order, Paragraph 32

“The County failed to use the active collection system to collect gas from each area, cell, or group of cells in the Landfill in which solid waste has been in place for five or more years, in violation of 40 C.F.R. §§ 63.1958(a), 63.1959(b)(2)(ii)(B)(2), and Condition V.A.B.4 of the Title V Permit.” — EPA Consent Agreement and Final Order, Paragraph 33

“The County failed to minimize GCCS downtime and emissions that occurred during the construction on Module 1, in violation of 40 C.F.R. §§ 63.1955(c), 63.1958(e) and 63.1960(e).” — EPA Consent Agreement and Final Order, Paragraph 37

“Respondent: (i) admits that EPA has jurisdiction over the subject matter alleged in this CAFO and over Respondent; (ii) neither admits nor denies the specific factual allegations contained in Section I.C of this CAFO.” — EPA Consent Agreement and Final Order, Paragraph 39, documenting the County’s position

Societal Impact Mapping: The Damage Beyond the Dollar Amount

Environmental Degradation

The Kiefer Landfill qualifies for NESHAP regulation because it meets two thresholds: a design capacity equal to or greater than 2.5 million metric tons and an estimated uncontrolled emissions rate equal to or greater than 50 metric tons per year of Non-Methane Organic Compounds (NMOC). Those are not small numbers. A facility this size, when operating with a failed gas collection system, releases significant volumes of hazardous air pollutants into the environment every day the system stays broken.

The federal law governing this facility was written specifically because landfill gas contamination is a documented, persistent environmental threat. EPA promulgated the first Landfill NESHAP in January 2003, updated it in March 2020, and the requirements that Kiefer violated have been continuously in force and continuously enforceable throughout the County’s ownership. The law requires gas collection from cells that have held waste for five or more years because organic decomposition produces the most gas and the most toxics at that stage. Kiefer failed to collect from exactly those cells — the most dangerous ones — for eight months.

The 54-acre Module M-1 top deck construction project, which the County cites as the context for the violations, involved depositing 657,000 cubic yards of soil onto an active gas-producing landfill module. That activity compressed the soil above the waste, disrupted the gas collection infrastructure below, and created conditions where gas had no controlled escape route. The result was uncontrolled atmospheric release from a 54-acre surface for the better part of a year.

Public Health

The EPA’s own 2003 rulemaking, cited directly in the Consent Agreement, identifies the specific health threats from landfill HAPs. Benzene is a Group 1 human carcinogen — meaning there is sufficient evidence of causation, not just association — linked to leukemia, non-Hodgkin lymphoma, and other blood disorders. Vinyl chloride is a confirmed human carcinogen linked to angiosarcoma of the liver. Toluene at high exposures causes neurological damage, kidney injury, and reproductive harm. Ethyl benzene is a possible human carcinogen.

These are the chemicals that Sloughhouse residents and anyone downwind of Kiefer Landfill were breathing from January through September 2023. The Consent Agreement does not include any air quality monitoring data, any community health assessment, or any analysis of what actual concentrations reached nearby homes, schools, or farms during the eight months of violations. Those numbers — if they exist — are not in this document. What is in this document is the County’s legal admission that the gas collection system failed, that emissions escaped, and that it signed a deal to pay $196,936 (enough to cover health insurance premiums for about 65 families for a full year) and call it resolved.

The most alarming dimension of the public health story is not the chemical list. It is the timeline. The EPA sent the County a formal notice of violation on March 1, 2024 — six months after the violations ended in September 2023. The violations themselves ran for 232 days. No public health warning appears anywhere in the source document. The community most affected by the toxic air releases received no official notification, no guidance on exposure risk, and no opportunity to seek medical screening. The penalty process moved forward in a closed regulatory loop between the County, the EPA, and the Sacramento Metropolitan Air Quality Management District (SMAQMD) — with no visible mechanism for affected residents to participate.

Economic Inequality

The fine structure in this case illustrates exactly how the regulatory system fails working-class communities. The total assessed penalty is $196,936 (roughly the cost of a two-year lease on a modest Sacramento storefront, or what a median Sacramento household earns in about two and a half years). That figure covers 232 days of violations across multiple categories of non-compliance at one of the largest landfills in the region. If the County fails to pay on time, the daily penalty is $1,000 per day (about what a Sacramento renter pays for a month in a one-bedroom apartment, divided by 30). For a county government with a multi-billion dollar annual budget, these numbers are not deterrents. They are line items.

Sloughhouse is a predominantly rural, lower-income area where residents have less political power and fewer resources to pursue independent legal action than residents of wealthier Sacramento suburbs. The landfill is there because land is cheap there. The people who live near it did not choose to live next to a facility generating benzene and vinyl chloride. They live there because that is what they can afford. The county government that allowed the gas collection system to fail while moving nearly 700,000 cubic yards of soil on top of that same landfill serves the entire county — including the wealthier neighborhoods that will never smell a landfill or wonder whether the morning air is safe to breathe. The regulatory penalty, paid by county taxpayers, goes to the federal government. The people who breathed the air get nothing.

The “Cost of a Life” Metric

What Now: Who Is Responsible and What You Can Do

Corporate Roles and Responsible Parties

• Sacramento County — Owner and operator of Kiefer Landfill. Respondent in this enforcement action. Signed the Consent Agreement. Neither admitted nor denied the specific violations.
• Director, Enforcement and Compliance Assurance Division, EPA Region IX (Amy C. Miller-Bowen) — The Complainant authority that brought and settled this enforcement action.
• [REDACTED – Not in Source] — No individual County employee or elected official is named in the source document as responsible for the decision to proceed with Module M-1 construction without ensuring gas collection compliance.
• Sacramento Metropolitan Air Quality Management District (SMAQMD) — The local air quality authority that holds and manages the Title V permit for Kiefer Landfill. The permit has been in renewal limbo since January 2016.

Regulatory Watchlist

• EPA Region IX — The federal authority that issued this penalty. Monitor Region IX enforcement actions at epa.gov/enforcement for future Kiefer compliance records.
• SMAQMD (Sacramento Metropolitan Air Quality Management District) — The local body responsible for issuing and renewing Kiefer’s Title V permit, which has been pending renewal since 2016. Demand the renewal process be completed with full public participation.
• California Air Resources Board (CARB) — Named in the source as a party that received EPA’s notice of violation. CARB has state-level enforcement authority over air toxics in California.
• Sacramento County Board of Supervisors — The elected governing body for Sacramento County. As the County is the landfill operator, the Board is ultimately accountable to residents for landfill management decisions.

The Path Forward

Attend Sacramento County Board of Supervisors meetings and demand a public accounting of what air monitoring data exists for the January–September 2023 violation period, whether any community health notifications were issued, and what the County’s plan is to prevent this from happening again during future landfill construction. Connect with local environmental justice groups in Sacramento County, particularly those working in rural and agricultural communities east of the city where Sloughhouse residents organize. Mutual aid networks and community air monitoring programs — where neighbors use low-cost sensors to track their own air quality — are a direct counter to systems that only measure and report pollution after regulators find out about it. Know your air. Know your rights. Demand the data.