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Astoria Park Conservancy

Amusement And Recreation, Jackson, Wyoming. NPDES permit WY0096440, in force until Jun 30, 2029. Last 12 months: over a limit 6 times (last June 2026), 5 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form SD quarterly (3 values), form SP quarterly (4 values), form SA yearly
Last report on file: June 2026
Oct 2024 – Sep 2025: 8 values over a limit, 0 required values missing, 1 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit
December 2025	pH, instantaneous maximum	7.9 SU	≤ 6.5 SU
December 2025	pH, instantaneous minimum	7.9 SU	≥ 9 SU
March 2026	pH, instantaneous maximum	7.8 SU	≤ 6.5 SU
March 2026	pH, instantaneous minimum	7.8 SU	≥ 9 SU
June 2026	pH, instantaneous maximum	7.5 SU	≤ 6.5 SU
June 2026	pH, instantaneous minimum	7.5 SU	≥ 9 SU

Limits in force (12)

Parameter	Statistic	Limit	Months
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year
pH	instantaneous maximum	≤ 6.5 SU	all year
pH	instantaneous minimum	≥ 9 SU	all year
Solids, total suspended	daily maximum	report only (mg/L)	all year
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year
Duration	monthly total	report only (d/mo)	all year
Chlorine, total residual	daily maximum	report only (mg/L)	all year
E. coli	daily maximum	report only (MPN/100mL)	all year
Flow	daily maximum	report only (MGD)	all year
Chemical Oxygen Demand [COD]	daily maximum	report only (mg/L)	all year

How strict are these limits?

pH, instantaneous maximum 6.5 SU — stricter than 99% of 304 other minor industrial and other permits in Wyoming
pH, instantaneous minimum at least 9 SU — stricter than 99% of 303 other minor industrial and other permits in Wyoming

Cited limits by parameter: Wyoming's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0096440 · MCP: https://passage-data.com/mcp