Loch Alpine Sanitary Authority

NPDES permit MI0024066 · Minor POTW · administratively continued, expires 2025-10-01 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2025-10-01 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

12values over a limit
2required values missing, on 1 form(s)
1of 12 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carb-5 day, 20 deg C, percent removal (6), Solids, suspended percent removal (3), BOD, carbonaceous [5 day, 20 C] (2).

Reporting

Reports are due about 31 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (102)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 3 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 78 lb/d all year
001Solids, total suspended7 DA AVG <= 120 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG = .35 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG report only Jun
001Phosphorus, total [as P]MO AVG report only May
001Phosphorus, total [as P]MO AVG report only Aug
001Phosphorus, total [as P]MO AVG report only Jul
001Phosphorus, total [as P]MO AVG report only Apr
001Phosphorus, total [as P]MO AVG report only Sep
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Jun
001Phosphorus, total [as P]DAILY MX report only May
001Phosphorus, total [as P]DAILY MX report only Aug
001Phosphorus, total [as P]DAILY MX report only Jul
001Phosphorus, total [as P]DAILY MX report only Apr
001Phosphorus, total [as P]DAILY MX report only Sep
001Phosphorus, total [as P]MO AVG = .9 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG = .6 lb/d Jun
001Phosphorus, total [as P]MO AVG = .6 lb/d May
001Phosphorus, total [as P]MO AVG = .5 lb/d Aug
001Phosphorus, total [as P]MO AVG = .5 lb/d Jul
001Phosphorus, total [as P]MO AVG <= 1.5 lb/d Apr
001Phosphorus, total [as P]MO AVG = .6 lb/d Sep
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Jun
001Phosphorus, total [as P]DAILY MX report only May
001Phosphorus, total [as P]DAILY MX report only Aug
001Phosphorus, total [as P]DAILY MX report only Jul
001Phosphorus, total [as P]DAILY MX report only Apr
001Phosphorus, total [as P]DAILY MX report only Sep
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= 38 ug/L all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]1D = 10 ng/L all year
001Mercury, total [as Hg]1D = .000026 lb/d all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal general7 DA GEO <= 400 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 65 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 100 lb/d all year
001BOD, carb-5 day, 20 deg C, percent removalMINIMUM >= 85 % all year
001BOD, carb-5 day, 20 deg C, percent removalDAILY MN report only all year
001Solids, suspended percent removalMINIMUM >= 70 % all year
001Solids, suspended percent removalDAILY MN report only all year
SLDSolids, totalMO MIN report only all year
SLDSolids, totalMO AVG report only all year
SLDSolids, totalMO MAX report only all year
SLDArsenic, dry weightMO MIN report only all year
SLDArsenic, dry weightMO AVG report only all year
SLDArsenic, dry weightMO MAX <= 75 mg/kg all year
SLDSelenium, dry weightMO MIN report only all year
SLDSelenium, dry weightMO AVG report only all year
SLDSelenium, dry weightMO MAX <= 100 mg/kg all year
SLDCopper, dry weightMO MIN report only all year
SLDCopper, dry weightMO AVG report only all year
SLDCopper, dry weightMO MAX <= 4300 mg/kg all year
SLDCadmium, dry weightMO MIN report only all year
SLDCadmium, dry weightMO AVG report only all year
SLDCadmium, dry weightMO MAX <= 85 mg/kg all year
SLDNitrogen, total KjeldahlMO MIN report only all year
SLDNitrogen, total KjeldahlMO AVG report only all year
SLDNitrogen, total KjeldahlMO MAX report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO MIN report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO AVG report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO MAX <= 75 mg/kg all year
SLDZinc, sludge, total, dry weight [as Zn]MO MIN report only all year
SLDZinc, sludge, total, dry weight [as Zn]MO AVG report only all year
SLDZinc, sludge, total, dry weight [as Zn]MO MAX <= 7500 mg/kg all year
SLDLead, sludge, total, dry weight [as Pb]MO MIN report only all year
SLDLead, sludge, total, dry weight [as Pb]MO AVG report only all year
SLDLead, sludge, total, dry weight [as Pb]MO MAX <= 840 mg/kg all year
SLDNickel, sludge, total, dry weight [as Ni]MO MIN report only all year
SLDNickel, sludge, total, dry weight [as Ni]MO AVG report only all year
SLDNickel, sludge, total, dry weight [as Ni]MO MAX <= 420 mg/kg all year
SLDNitrogen, sludge, total, dry weight [as N]MO MIN report only all year
SLDNitrogen, sludge, total, dry weight [as N]MO AVG report only all year
SLDNitrogen, sludge, total, dry weight [as N]MO MAX report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO MIN report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO AVG report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO MAX <= 57 mg/kg all year
SLDPotassium, sludge, total, dry weight [as K]MO MIN report only all year
SLDPotassium, sludge, total, dry weight [as K]MO AVG report only all year
SLDPotassium, sludge, total, dry weight [as K]MO MAX report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO MIN report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO AVG report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO MAX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states