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Lyons Creek MHC, LLC

Trailer Parks And Campsites, Lothian, Maryland. NPDES permit MD0053511, in force until Jan 31, 2028. Last 12 months: over a limit 34 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form B monthly (21 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
25 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 34 values over a limit
Period endingParameterReportedLimitOver by
November 2025Solids, total suspended, maximum weekly average9 lb/d≤ 8.8 lb/d2%
December 2025BOD, 5-day, 20 deg. C, maximum weekly average25.8 lb/d≤ 8.8 lb/d193%
December 2025BOD, 5-day, 20 deg. C, maximum weekly average37 mg/L≤ 15 mg/L147%
December 2025Nitrogen, ammonia total [as N], daily maximum15.7 lb/d≤ 8.2 lb/d91%
December 2025Nitrogen, ammonia total [as N], daily maximum23 mg/L≤ 14 mg/L64%
December 2025Nitrogen, ammonia total [as N], maximum monthly average3.4 lb/d≤ 1.6 lb/d113%
December 2025Nitrogen, ammonia total [as N], maximum monthly average4.9 mg/L≤ 2.7 mg/L81%
March 2026Nitrogen, ammonia total [as N], daily maximum18 mg/L≤ 14 mg/L29%
March 2026Nitrogen, ammonia total [as N], daily maximum9.4 lb/d≤ 8.2 lb/d15%
March 2026Nitrogen, ammonia total [as N], maximum monthly average5.1 lb/d≤ 1.6 lb/d219%
March 2026Nitrogen, ammonia total [as N], maximum monthly average9.1 mg/L≤ 2.7 mg/L237%
April 2026Nitrogen, ammonia total [as N], maximum monthly average2.3 lb/d≤ 1.6 lb/d44%
April 2026Nitrogen, ammonia total [as N], maximum monthly average4.3 mg/L≤ 2.7 mg/L59%
June 2026Nitrogen, ammonia total [as N], daily maximum18.3 mg/L≤ 14 mg/L31%
June 2026Nitrogen, ammonia total [as N], daily maximum9 lb/d≤ 8.2 lb/d10%
June 2026Nitrogen, ammonia total [as N], maximum monthly average2.3 lb/d≤ .9 lb/d156%
June 2026Nitrogen, ammonia total [as N], maximum monthly average4.6 mg/L≤ 1.7 mg/L171%
July 2026BOD, 5-day, 20 deg. C, maximum monthly average18.36 mg/L≤ 10 mg/L84%
July 2026BOD, 5-day, 20 deg. C, maximum monthly average9.21 lb/d≤ 5.8 lb/d59%
July 2026BOD, 5-day, 20 deg. C, maximum weekly average33.03 lb/d≤ 8.8 lb/d275%
July 2026BOD, 5-day, 20 deg. C, maximum weekly average64.1 mg/L≤ 15 mg/L327%
July 2026Nitrogen, ammonia total [as N], maximum monthly average2.61 lb/d≤ .9 lb/d190%
July 2026Nitrogen, ammonia total [as N], maximum monthly average5.3 mg/L≤ 1.7 mg/L212%
July 2026Oxygen, dissolved [DO], instantaneous minimum4.76 mg/L≥ 5 mg/L5%
July 2026Solids, total suspended, maximum monthly average104.62 mg/L≤ 10 mg/L946%
July 2026Solids, total suspended, maximum monthly average50.57 lb/d≤ 5.8 lb/d772%
July 2026Solids, total suspended, maximum weekly average149.45 lb/d≤ 8.8 lb/d1598%
July 2026Solids, total suspended, maximum weekly average290 mg/L≤ 15 mg/L1833%
August 2026Oxygen, dissolved [DO], instantaneous minimum3.2 mg/L≥ 5 mg/L36%
August 2026Solids, suspended percent removal, minimum84 %≥ 85 %7%
August 2026Solids, total suspended, maximum monthly average13.9 lb/d≤ 5.8 lb/d140%
August 2026Solids, total suspended, maximum monthly average27.6 mg/L≤ 10 mg/L176%
August 2026Solids, total suspended, maximum weekly average27.8 lb/d≤ 8.8 lb/d216%
August 2026Solids, total suspended, maximum weekly average61 mg/L≤ 15 mg/L307%

Limits in force (25)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 5.8 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 8.8 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximum monthly average≤ 10 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 15 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 5.8 lb/dall year
Solids, total suspendedmaximum weekly average≤ 8.8 lb/dall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.7 mg/LMay–Oct
Nitrogen, ammonia total [as N]maximum monthly average≤ 2.7 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 14 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 14 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]maximum monthly average≤ .9 lb/dMay–Oct
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.6 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 8.2 lb/dJan, Feb, Mar, Apr, Nov, Dec
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 residualmaximum≤ .011 mg/Lall year
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year

How strict are these limits?

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

Same industry: the 16 Hotels, Rooming Houses, Camps and Other Lodging permits in Maryland.

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