CW&W CONTRACTORS INC. - SIBLEY YARD
NPDES ID: LAG480964
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 2 effluent violations.
Violations
March 31, 2026
Solids, total suspended
849% over limit
Discharged 427 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
1940% over limit
Discharged 918 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen demand, chem. [high level] [COD]
7% over limit
Discharged 214 mg/L against a permitted limit of 200 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil & Grease
87% over limit
Discharged 28.1 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
6944% over limit
Discharged 3170 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
142% over limit
Discharged 109 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
1227% over limit
Discharged 597 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total suspended
119% over limit
Discharged 98.5 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)