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Rice Hill Owners Association, Inc., the

Sewerage Systems, Yoncalla, Oregon. NPDES permit OR0028789, in force until Jan 31, 2028. Last 12 months: over a limit 8 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (1 value), form G monthly (6 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
20 values over a limit, 9 required values missing, 5 of 26 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, 5-day, 20 deg. C, monthly average7.5 lb/d≤ 5 lb/d50%
January 2026Solids, total suspended, monthly average11.95 lb/d≤ 8.3 lb/d44%
February 2026BOD, 5-day, 20 deg. C, monthly average37.5 mg/L≤ 30 mg/L25%
February 2026BOD, 5-day, 20 deg. C, monthly average5.59 lb/d≤ 5 lb/d12%
February 2026BOD, 5-day, percent removal, monthly average minimum68.5 %≥ 85 %110%
March 2026BOD, 5-day, 20 deg. C, monthly average5.63 lb/d≤ 5 lb/d13%
March 2026BOD, 5-day, percent removal, monthly average minimum83 %≥ 85 %13%
March 2026Solids, total suspended, monthly average10.7 lb/d≤ 8.3 lb/d29%

Limits in force (34)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. centigradedaily maximumreport only (deg C)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)Jan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 5 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 10 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 7.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
pHdaily minimum≥ 6.1 SUJan, Feb, Mar, Apr, Nov, Dec
pHdaily maximum≤ 9 SUJan, Feb, Mar, Apr, Nov, Dec
pHmonthly minimumreport only (SU)all year
pHmonthly maximumreport only (SU)all year
Alkalinity, total [as CaCO3]monthly maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 50 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 8.3 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 17 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly average≤ 75 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 12 lb/dJan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .05 mg/LJan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualdaily maximum≤ .05 mg/LJan, Feb, Mar, Apr, Nov, Dec
E. colimonthly geometric mean≤ 126 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colidaily maximum≤ 406 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colimonthly geometric mean≤ 126 #/100mLJan, Feb, Mar, Apr, Nov, Dec
E. colidaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, Nov, Dec
Solids, suspended percent removalmonthly average minimum≥ 65 %Jan, Feb, Mar, Apr, Nov, Dec
Chlorine usagemonthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec

How strict are these limits?

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

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