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Diamond Hill L.L.C.

Trailer Parks And Campsites, Harrisburg, Oregon. NPDES permit OR0021954 expired Dec 31, 2017; its limits still apply. Last 12 months: over a limit 9 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (7 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
March 2026BOD, 5-day, 20 deg. C, daily maximum23.4 lb/d≤ 14 lb/d67%
March 2026BOD, 5-day, 20 deg. C, monthly average11.4 lb/d≤ 7 lb/d63%
March 2026BOD, 5-day, 20 deg. C, monthly average63 mg/L≤ 30 mg/L110%
March 2026BOD, 5-day, 20 deg. C, weekly average130 mg/L≤ 45 mg/L189%
March 2026BOD, 5-day, 20 deg. C, weekly average23.4 lb/d≤ 11 lb/d113%
April 2026BOD, 5-day, 20 deg. C, monthly average55.1 mg/L≤ 30 mg/L84%
April 2026BOD, 5-day, 20 deg. C, monthly average9.4 lb/d≤ 7 lb/d34%
April 2026BOD, 5-day, 20 deg. C, weekly average13.2 lb/d≤ 11 lb/d20%
April 2026BOD, 5-day, 20 deg. C, weekly average78.2 mg/L≤ 45 mg/L74%

Limits in force (33)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)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≤ 7 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 14 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Jul, Aug, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 11 lb/dJan, Feb, Mar, Apr, Nov, Dec
pHdaily minimum≥ 6.5 SUJan, Feb, Mar, Apr, Nov, Dec
pHdaily maximum≤ 8.5 SUJan, Feb, Mar, Apr, Nov, Dec
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 50 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 12 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 24 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Jul, Aug, Nov, Dec
Solids, total suspendedweekly average≤ 80 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 18 lb/dJan, Feb, Mar, Apr, Nov, Dec
Rainfalldaily maximumreport only (in)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximum≤ 0 gal/dMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport 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
Lagoon freeboardmonthly minimumreport only (in)all year
Lagoon freeboardmonthly maximumreport only (in)all year

How strict are these limits?

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

Same industry: the 5 Hotels, Rooming Houses, Camps and Other Lodging permits in Oregon.

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On EPA ECHO: Facility report · DMR history

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