SLEEPY HOLLOW SD
NPDES ID: NY0029238
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 5 effluent violations, 1 compliance schedule violation.
Violations
May 31, 2026
Oxygen, dissolved [DO]
65% over limit
Discharged 2.45 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
74% over limit
Discharged 0.21338 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
73% over limit
Discharged 74 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
120% over limit
Discharged 0.39952 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
20% over limit
Discharged 6 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, 5-day, 20 deg. C
40% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
80% over limit
Discharged 9 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, 20 deg. C
100% over limit
Discharged 10 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
94% over limit
Discharged 0.1589 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
267% over limit
Discharged 0.29964 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
180% over limit
Discharged 14 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
80% over limit
Discharged 18 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.97035998 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
439% over limit
Discharged 0.44038 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
100% over limit
Discharged 10 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
100% over limit
Discharged 10 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.14982 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 92 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 130 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
July 31, 2025
BOD, 5-day, 20 deg. C
88% over limit
Discharged 0.3405 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
213% over limit
Discharged 53 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
200% over limit
Discharged 15 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
289% over limit
Discharged 0.3178 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
300% over limit
Discharged 40 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
150% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.3632 kg/d (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
28% over limit
Discharged 0.10442 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, suspended percent removal
27% over limit
Discharged 81 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
193% over limit
Discharged 0.35866 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
120% over limit
Discharged 11 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
93% over limit
Discharged 71 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Flow rate
10% over limit
Discharged 0.011 MGD against a permitted limit of 0.01 MGD (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
119% over limit
Discharged 0.79449999 kg/d against a permitted limit of 0.3632 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
383% over limit
Discharged 0.87621999 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
104% over limit
Discharged 0.2497 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
60% over limit
Discharged 0.29056 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
60% over limit
Discharged 8 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
220% over limit
Discharged 16 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
30% over limit
Discharged 0.1589 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
40% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Flow rate
0% over limit
Discharged 0.006 MGD against a permitted limit of 0.01 MGD (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
105% over limit
Discharged 0.37228 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
120% over limit
Discharged 11 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
59% over limit
Discharged 0.19522 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
170% over limit
Discharged 0.33142 kg/d against a permitted limit of 0.12258 kg/d (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
28% over limit
Discharged 0.10442 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
July 31, 2024
Nitrogen, ammonia total [as N]
111% over limit
Discharged 0.17252 kg/d against a permitted limit of 0.08172 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
10% over limit
Discharged 0.19976 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)