SAN JUAN GENERATING STATION

Address

3 MI N OF WATERFLOW
WATERFLOW, NM 87421
View on map ↗

County

SAN JUAN County

Industry

Utilities

NAICS (North American Industry Classification)

221112

Total Penalties

$0 · last May 13, 2011

Registry ID

110000600868

How This Compares

#8 of 94 TRI reporters in NM

#143 of 584 TRI reporters in Utilities

Ranked by most recent year's total TRI releases.

Compliance Status (Last 12 Quarters)

Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.

0

Air (CAA)
Qtrs Non-Compliant

8

Water (CWA)
Qtrs Non-Compliant

0

Hazardous Waste (RCRA)
Qtrs Non-Compliant

TRI Toxic Chemical Releases

Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.

Emissions Trend (2015–2024) -100% overall

Year	Total Releases (lbs)	vs Prior Year
2015	104,964	—
2016	485,396	+362%
2017	506,844	+4%
2018	371,401	-27%
2019	20,892	-94%
2020	368,654	+1665%
2021	370,125	0%
2022	358,182	-3%
2024	0	—

2024

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Lead compounds	—	—	—	—	587
Manganese compounds	—	—	—	—	15,017
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	—	—	—	—	22,234

2022

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	322,487	321,479	—	1,008	—
Hydrogen fluoride	13,384	13,384	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7,278	7,278	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	5,843	322	—	5,521	336,956
Copper compounds	4,081	73	—	4,008	23,658
Zinc compounds	2,024	468	—	1,556	19,742
Manganese compounds	1,303	143	—	1,160	84,874
Vanadium compounds	585	65	—	520	33,254
Lead compounds	410	40	—	370	17,370
Chromium compounds (except for chromite ore mined in the Transvaal Region)	312	140	—	172	13,449
Nickel compounds	184	90	—	94	8,509	♦ Carcinogen
Selenium compounds	177	12	—	165	10,391
Cobalt compounds	83	23	—	60	7,716	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	12	12	—	—	—
Naphthalene	11	11	—	—	—	♦ Carcinogen
Mercury compounds	6	4	—	3	350
Polycyclic aromatic compounds	2	2	—	—	—	♦ Carcinogen

2021

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	317,044	316,033	—	1,011	—
Hydrogen fluoride	19,823	19,823	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	10,789	10,789	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	10,240	394	—	9,846	496,756
Copper compounds	4,405	97	—	4,308	34,757
Zinc compounds	2,480	647	—	1,833	28,654
Manganese compounds	2,286	218	—	2,068	123,243
Vanadium compounds	1,012	84	—	928	48,410
Lead compounds	718	58	—	660	25,518
Chromium compounds (except for chromite ore mined in the Transvaal Region)	517	210	—	307	19,629
Selenium compounds	311	16	—	295	15,315
Nickel compounds	309	141	—	168	12,316	♦ Carcinogen
Cobalt compounds	144	36	—	108	10,895	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	20	20	—	—	—
Naphthalene	16	16	—	—	—	♦ Carcinogen
Mercury compounds	8	3	—	5	493
Polycyclic aromatic compounds	3	3	—	—	—	♦ Carcinogen

2020

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	321,566	320,529	—	1,037	—
Hydrogen fluoride	20,273	20,273	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	11,078	11,078	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	5,956	490	—	5,466	612,885
Copper compounds	4,117	112	—	4,005	42,990
Zinc compounds	2,282	730	—	1,552	36,779
Manganese compounds	1,384	236	—	1,148	150,919
Vanadium compounds	617	102	—	515	60,290
Lead compounds	430	63	—	366	33,153
Chromium compounds (except for chromite ore mined in the Transvaal Region)	385	215	—	170	23,713
Nickel compounds	237	144	—	93	14,808	♦ Carcinogen
Selenium compounds	182	18	—	164	18,807
Cobalt compounds	97	37	—	60	13,364	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	24	24	—	—	—
Naphthalene	17	17	—	—	—	♦ Carcinogen
Mercury compounds	6	3	—	3	602
Polycyclic aromatic compounds	3	3	—	—	—	♦ Carcinogen

2019

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Hydrogen fluoride	19,636	19,636	—	—	—
Vanadium compounds	599	76	—	523	67,056
Chromium compounds (except for chromite ore mined in the Transvaal Region)	379	206	—	173	25,823
Nickel compounds	233	138	—	95	15,918	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	25	25	—	—	—
Naphthalene	16	16	—	—	—	♦ Carcinogen
Mercury compounds	4	1	—	3	631

2018

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	314,030	313,000	—	1,030	—
Hydrogen fluoride	19,000	19,000	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	10,776	276	—	10,500	577,001
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	10,400	10,400	—	—	—
Copper compounds	8,060	80	—	7,980	40,300
Zinc compounds	3,624	544	—	3,080	34,004
Manganese compounds	2,371	171	—	2,200	139,006
Vanadium compounds	1,054	67	—	987	55,900
Lead compounds	748	46	—	703	31,257
Chromium compounds (except for chromite ore mined in the Transvaal Region)	513	186	—	327	22,000
Selenium compounds	327	13	—	314	17,700
Nickel compounds	301	122	—	179	13,500	♦ Carcinogen
Cobalt compounds	146	31	—	115	11,500	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	25	25	—	—	—
Naphthalene	15	15	—	—	—	♦ Carcinogen
Mercury compounds	7	2	—	5	519
Polycyclic aromatic compounds	3	3	—	—	—	♦ Carcinogen
Dioxin and dioxin-like compounds	1	1	—	—	—	♦ Carcinogen

2017

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	393,400	392,100	—	1,300	—
Hydrogen fluoride	43,900	43,900	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	23,800	23,800	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	16,475	775	—	15,700	1,640,005
Copper compounds	8,541	201	—	8,340	114,000
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7,010	7,010	—	—	—
Zinc compounds	4,759	1,349	—	3,410	98,528
Manganese compounds	3,694	394	—	3,300	388,042
Vanadium compounds	1,650	170	—	1,480	158,000
Lead compounds	1,153	101	—	1,052	92,580
Chromium compounds (except for chromite ore mined in the Transvaal Region)	791	301	—	490	60,600
Nickel compounds	551	284	—	267	36,700	♦ Carcinogen
Selenium compounds	507	37	—	470	50,000
Cobalt compounds	230	58	—	172	30,700	♦ Carcinogen
Arsenic compounds	229	12	—	217	23,600	♦ Carcinogen
Beryllium compounds	75	3	—	72	8,220	♦ Carcinogen
Mercury compounds	37	30	—	7	1,355
Naphthalene	34	34	—	—	—	♦ Carcinogen
Polycyclic aromatic compounds	6	6	—	—	—	♦ Carcinogen
Dioxin and dioxin-like compounds	2	2	—	—	—	♦ Carcinogen

2016

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Ammonia	372,490	371,300	—	1,190	—
Hydrogen fluoride	41,900	41,900	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	22,900	22,900	—	—	—
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	13,653	653	—	13,000	1,640,000
Copper compounds	8,319	169	—	8,150	114,000
Beryllium compounds	8,262	8,262	—	—	—	♦ Carcinogen
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	6,050	6,050	—	—	—
Zinc compounds	4,357	1,117	—	3,240	99,000
Manganese compounds	3,095	375	—	2,720	386,000
Vanadium compounds	1,364	144	—	1,220	158,000
Lead compounds	964	95	—	868	93,613
Chromium compounds (except for chromite ore mined in the Transvaal Region)	688	283	—	405	60,200
Nickel compounds	487	266	—	221	36,300	♦ Carcinogen
Selenium compounds	423	35	—	388	50,100
Cobalt compounds	197	55	—	142	29,900	♦ Carcinogen
Arsenic compounds	190	11	—	179	23,500	♦ Carcinogen
Naphthalene	32	32	—	—	—	♦ Carcinogen
Mercury compounds	18	12	—	6	1,313
Polycyclic aromatic compounds	6	6	—	—	—	♦ Carcinogen
Dioxin and dioxin-like compounds	2	2	—	—	—	♦ Carcinogen

2015

Chemical	Total (lbs)	Air	Water	Land	Off-Site
Hydrogen fluoride	38,300	38,300	—	—	—
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	21,100	21,100	—	—	—
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	12,300	12,300	—	—	—
Manganese compounds	10,008	418	—	9,590	383,000
Beryllium compounds	8,013	8,013	—	—	—	♦ Carcinogen
Zinc compounds	6,421	1,081	—	5,340	94,400
Vanadium compounds	4,465	165	—	4,300	151,000
Selenium compounds	1,410	40	—	1,370	47,800
Nickel compounds	884	102	—	782	34,300	♦ Carcinogen
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	868	868	—	—	1,570,000
Cobalt compounds	554	54	—	500	27,600	♦ Carcinogen
Chromium compounds (except for chromite ore mined in the Transvaal Region)	266	266	—	—	57,000
Copper compounds	178	178	—	—	109,000
Lead compounds	106	106	—	—	90,100
Mercury compounds	39	18	—	21	1,220
Naphthalene	30	30	—	—	—	♦ Carcinogen
Arsenic compounds	14	14	—	—	22,400	♦ Carcinogen
Polycyclic aromatic compounds	6	6	—	—	—	♦ Carcinogen
Dioxin and dioxin-like compounds	2	2	—	—	—	♦ Carcinogen
Benzo[g,h,i]perylene	0	0	—	—	—

Waste Management & Recycling

How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.

Chemical	Released	Recycled	Energy Recovery	Treated

Off-Site Transfer Destinations

Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.

Destination	Chemical	Disposal	Recycling	Energy Rec.	Treatment
SAN JUAN MINE WATERFLOW, NM	Lead compounds	587	—	—	—
SAN JUAN MINE WATERFLOW, NM	Manganese compounds	15,017	—	—	—
SAN JUAN MINE WATERFLOW, NM	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	22,234	—	—	—

Compliance Violations

Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.

Program	Type	Violation Date	Return to Compliance	Status
rcra	Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators	Feb 28, 2017	Mar 23, 2017	Resolved
rcra	Interim Status Standards for Owners and Operators of HW TSDs: Preparedness and Prevention	Feb 28, 2017	Mar 23, 2017	Resolved
rcra	Standards for Universal Waste Management: Standards for Small Quantity Handlers	Feb 28, 2017	Mar 23, 2017	Resolved
rcra	Standards for Used Oil: Generators	Feb 28, 2017	Jun 8, 2017	Resolved
caa	FRV	Oct 6, 2016	—	Open
rcra	Standards Applicable to Generators of HW: General	May 30, 1991	Jul 18, 1991	Resolved

Discharge Limit Exceedances

Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.

Pollutant	Violation	Reported	Limit	Exceedance	Period	Status
Solids, total suspended	DMR, Limited - Numeric Violation	257.00 mg/L	50.00	+414%	Oct 2025	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	83.10 mg/L	50.00	+66%	Sep 2025	Open
Solids, total suspended	DMR, Limited - Numeric Violation	7,410.00 mg/L	50.00	+14,720%	Sep 2025	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	7,100.00 mg/L	50.00	+14,100%	Jul 2025	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	7,410.00 mg/L	50.00	+14,720%	Apr 2025	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	6,300.00 mg/L	50.00	+12,500%	Oct 2024	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	2,420.00 mg/L	50.00	+4,740%	Sep 2024	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	2,420.00 mg/L	50.00	+4,740%	Jul 2024	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	1,310.00 mg/L	50.00	+2,520%	Apr 2024	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	3,690.00 mg/L	50.00	+7,280%	Jan 2024	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	142.00 mg/L	50.00	+184%	Sep 2023	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	142.00 mg/L	50.00	+184%	Apr 2023	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	4,400.00 mg/L	50.00	+8,700%	Jan 2023	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	16,900.00 mg/L	50.00	+33,700%	Sep 2022	Resolved

Enforcement Actions

Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.

WRITTEN INFORMAL

RCRA (Hazardous Waste) · Case RCRA-NMD069424323-001 · Jun 15, 2017

Notice of Violation

Clean Air Act · Case 3600847992 · Oct 26, 2016

Administrative - Formal

· Case 06-1999-0526 · Sep 7, 1999

$550

WRITTEN INFORMAL

RCRA (Hazardous Waste) · Case RCRA-NMD069424323-000 · Jun 25, 1991

Judicial

· Case 06-1983-0001 · Apr 8, 1985

$50,000

Judicial

· Case 06-1978-0002 · Jun 12, 1978

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