20 ROAD GRAVEL PIT
NPDES ID: COG500491
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
June 30, 2025
Solids, total dissolved
0% over limit
Discharged 6823 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 5079 mg/L against a permitted limit of 0 mg/L (30DA AVG)
DMR, Monitor Only - Overdue
Flow, total
0% over limit
Discharged 0.00000621 gal against a permitted limit of 0 gal (QTRTOTAL)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.49 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Selenium, potentially dissolvd
0% over limit
Discharged 0.00216 mg/L against a permitted limit of 0.0184 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
8% over limit
Discharged 32.5 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
Solids, total suspended
8% over limit
Discharged 32.5 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Oil and grease
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (INST MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.46 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Selenium, potentially dissolvd
0% over limit
Discharged 0.00214 mg/L against a permitted limit of 0.0046 mg/L (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.65 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 0 pass=0;fail=1 (INST MAX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 43 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.12 MGD against a permitted limit of 0.72 MGD (30DA AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)