USDA - FOREST SERVICE - GRINDSTONE RECREATION AREA
NPDES ID: VA0022993
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 2 effluent violations, 2 compliance schedule violations.
Violations
April 30, 2026
Chlorine, total residual
8428% over limit
Discharged 1.535 mg/L against a permitted limit of 0.018 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
9900% over limit
Discharged 2.2 mg/L against a permitted limit of 0.022 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
9900% over limit
Discharged 2.2 mg/L against a permitted limit of 0.022 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
7511% over limit
Discharged 1.37 mg/L against a permitted limit of 0.018 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Chlorine, total residual
9900% over limit
Discharged 2.2 mg/L against a permitted limit of 0.022 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
9% over limit
Discharged 6.21 mg/L against a permitted limit of 6.8 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
11011% over limit
Discharged 2 mg/L against a permitted limit of 0.018 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
pH
0% over limit
Discharged 5.05 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)