NPDES facility
ARRIBA WWTF
NPDES ID COG591055 | Arriba Division, Lincoln, CO
Summary
Nitrogen, ammonia total [as N] (4); BOD, 5-day, 20 deg. C (2); Sulfide-hydrogen sulfide [undissociated] (2)
PEAK Detail
Repeated NPDES issues (8 in last 2 years); evaluate lift stations, controls, pumping reliability, and reporting workflow.
County Fit
- Rating: Great Target
- Why: Inside the active county. Aligned to the active region. Closest base Grand Junction, CO (270 mi)
- Closest Base: Grand Junction, CO | 270 mi
Facility Profile
- MWD
Partner Network
County only
- Engineers: JVA Consulting Engineers; SGM; Triunity Engineering
- Contractors: ASCO Construction; Advanced Concrete Lifting; All Demolition Excavating Company
Recent Issues
- 2026-01-31 | Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | Days late 0
- 2026-01-31 | Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | Days late 0
- 2026-01-31 | BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | Days late 0
- 2025-12-31 | BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | Days late 0
- 2024-11-30 | Sulfide-hydrogen sulfide [undissociated] | DMR, Limited - Numeric Violation | Days late 0
- 2024-10-31 | Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | Days late 0
- 2024-10-31 | Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | Days late 0
- 2024-10-31 | Sulfide-hydrogen sulfide [undissociated] | DMR, Limited - Numeric Violation | Days late 0
Supporting Notes
- Exceedence summary: max 89900.0%; avg 28308.2%
Source Evidence
- Name: EPA ECHO NPDES
- Type: Regulatory Dataset
- Date: 2026-01-31
- Confidence: High
- Source Key: COG591055
- Nitrogen, ammonia total [as N] (4); BOD, 5-day, 20 deg. C (2); Sulfide-hydrogen sulfide [undissociated] (2)
- Source Link: https://echo.epa.gov/detailed-facility-report?fid=COG591055