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NB Sandy's MHC LLC

Sewerage Systems, White Post, Virginia. NPDES permit VA0088811, in force until Dec 31, 2029. Last 12 months: over a limit 13 times (last July 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (18 values), form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
22 values over a limit, 5 required values missing, 1 of 13 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average3.44≤ 2.4 kg/d43%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average34≤ 18 mg/L89%
October 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average6.65≤ 3.6 kg/d85%
October 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average63≤ 27 mg/L133%
October 2025Nitrogen, ammonia total [as N], monthly average9.63≤ 3.1 mg/L211%
October 2025Nitrogen, ammonia total [as N], maximum weekly average12.71≤ 4.6 mg/L176%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average21.8≤ 18 mg/L21%
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average34≤ 27 mg/L26%
March 2026Solids, total suspended, monthly average33.3≤ 30 mg/L11%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average22.3≤ 18 mg/L24%
April 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average33≤ 27 mg/L22%
April 2026Solids, total suspended, monthly average37.7≤ 30 mg/L26%
July 2026pH, maximum7.9≤ 7.5 SU—

Limits in force (25)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6.3 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 7.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 4.5 kg/dall year
Solids, total suspendedmaximum weekly average≤ 6.8 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJun–Nov
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Mar, Apr, May, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 4.6 mg/LJun–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 5.8 mg/LJan, Feb, Mar, Apr, May, Dec
Flow, in conduit or thru treatment plantmonthly average≤ .04 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
Chlorine, total residualmonthly average≤ .0074 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .0082 mg/Lall year
Chlorine, total residualinstantaneous minimum≥ .6 mg/Lall year
E. coligeometric mean≤ 126 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 18 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 27 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.4 kg/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 3.6 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Jan 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average1.4 mg/L (Jun–Nov)tighter0.68 mg/L (5 values)0.486×
Nitrogen, ammonia total [as N], monthly average2.4 mg/L (Jan, Feb, Mar, Apr, May, Dec)tighter0.87 mg/L (6 values)0.362×
Nitrogen, ammonia total [as N], weekly average2.1 mg/L (Jun–Nov)tighter——
Nitrogen, ammonia total [as N], weekly average3.5 mg/L (Jan, Feb, Mar, Apr, May, Dec)tighter——

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/VA0088811 · MCP: https://passage-data.com/mcp