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Cement, Hydraulic, Dixon, Illinois. NPDES permit IL0003514, in force until Apr 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly maximum | ≤ 33.7 deg C | Apr–Nov | 001 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 17.7 deg C | Jan, Feb, Mar, Dec | 001 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 3 deg C | all year | 001 |
| Temperature, water deg. centigrade | monthly maximum | report only (deg C) | all year | 001 |
| pH | monthly minimum | ≥ 6 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | report only (lb/d) | all year | 001 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 001 |
| Temperature, length of excursion | total | ≤ 87.6 hr/12mo | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 001 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 33.7 deg C | Apr–Nov | 002 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 17.7 deg C | Jan, Feb, Mar, Dec | 002 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 3 deg C | all year | 002 |
| Temperature, water deg. centigrade | monthly maximum | report only (deg C) | all year | 002 |
| pH | monthly minimum | ≥ 6 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | 30-day average | report only (lb/d) | all year | 002 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 002 |
| Iron, total [as Fe] | 30-day average | ≤ 2 mg/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 002 |
| Temperature, length of excursion | total | ≤ 87.6 hr/12mo | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 002 |
| Mercury, total [as Hg] | quarterly average | report only (ng/L) | Mar, Jun, Sep, Dec | 002 |
| Mercury, total [as Hg] | quarterly maximum | report only (ng/L) | Mar, Jun, Sep, Dec | 002 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 33.7 deg C | Apr–Nov | 003 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 17.7 deg C | Jan, Feb, Mar, Dec | 003 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 3 deg C | all year | 003 |
| Temperature, water deg. centigrade | monthly maximum | report only (deg C) | all year | 003 |
| pH | monthly minimum | ≥ 6 SU | all year | 003 |
| pH | monthly maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | 30-day average | report only (lb/d) | all year | 003 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 003 |
| Temperature, length of excursion | total | ≤ 87.6 hr/12mo | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 33.7 deg C | Apr–Nov | 004 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 17.7 deg C | Jan, Feb, Mar, Dec | 004 |
| Temperature, water deg. centigrade | monthly maximum | ≤ 3 deg C | all year | 004 |
| Temperature, water deg. centigrade | monthly maximum | report only (deg C) | all year | 004 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 004 |
| pH | monthly maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | 30-day average | report only (lb/d) | all year | 004 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 004 |
| Chloride [as Cl] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1864 mg/L | all year | 004 |
| Temperature, length of excursion | total | ≤ 87.6 hr/12mo | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 004 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 005 |
| pH | monthly maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 005 |
| Iron, total [as Fe] | 30-day average | report only (mg/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Offensive Conditions | value | report only (N=0;Y=1) | all year | 005 |
| Mercury, total [as Hg] | quarterly maximum | report only (ng/L) | Mar, Jun, Sep, Dec | 005 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 006 |
| pH | monthly maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Offensive Conditions | value | report only (N=0;Y=1) | all year | 006 |
| Oxygen, dissolved [DO] | monthly average minimum | ≥ 5.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 015 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 4 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 015 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6 mg/L | Mar–Jul | 015 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 3.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 015 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Mar–Jul | 015 |
| pH | monthly minimum | ≥ 6 SU | all year | 015 |
| pH | monthly maximum | ≤ 9 SU | all year | 015 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 015 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 015 |
| Solids, total suspended | 30-day average | ≤ 3.5 lb/d | all year | 015 |
| Solids, total suspended | daily maximum | ≤ 7 lb/d | all year | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 015 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 015 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 015 |
| Coliform, fecal general | daily maximum | ≤ 200 #/100mL | all year | 015 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | 015 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 50 mg/L | all year | 015 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 2.9 lb/d | all year | 015 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 5.8 lb/d | all year | 015 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 11 Stone, Clay, Glass and Concrete Products permits in Illinois.
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