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Semiconductors And Related Devices, major discharger, Youngwood, Pennsylvania. NPDES permit PA0001201, in force until May 31, 2030. Last 12 months: over a limit 6 times (last June 2026), 27 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Aluminum, total [as Al], daily maximum | 1.1 mg/L | ≤ .75 mg/L | 47% |
| December 2025 | Aluminum, total [as Al], quarterly average | 1.07 mg/L | ≤ .75 mg/L | 43% |
| March 2026 | Aluminum, total [as Al], daily maximum | .92 mg/L | ≤ .75 mg/L | 23% |
| March 2026 | Aluminum, total [as Al], quarterly average | .915 mg/L | ≤ .75 mg/L | 22% |
| June 2026 | Aluminum, total [as Al], daily maximum | 1.68 mg/L | ≤ .75 mg/L | 124% |
| June 2026 | Aluminum, total [as Al], quarterly average | 1.36 mg/L | ≤ .75 mg/L | 81% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | quarterly average | ≤ .75 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L | 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 | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 1.25 mg/L | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 001 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 001 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | May–Sep | 001 |
| Coliform, fecal general | geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | May–Sep | 001 |
| Coliform, fecal general | instantaneous maximum | ≤ 10000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 20 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 002 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 101 |
| pH | daily maximum | ≤ 9 SU | all year | 101 |
| Solids, total suspended | monthly average | ≤ 31 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 101 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 101 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 101 |
| Cyanide, total [as CN] | quarterly average | ≤ .65 mg/L | all year | 101 |
| Cyanide, total [as CN] | daily maximum | ≤ 1.2 mg/L | all year | 101 |
| Fluoride, total [as F] | monthly average | ≤ 16.6 mg/L | all year | 101 |
| Fluoride, total [as F] | daily maximum | ≤ 32 mg/L | all year | 101 |
| Cadmium, total [as Cd] | quarterly average | ≤ .0063 mg/L | all year | 101 |
| Cadmium, total [as Cd] | daily maximum | ≤ .013 mg/L | all year | 101 |
| Chromium, total [as Cr] | quarterly average | ≤ 1.59 mg/L | all year | 101 |
| Chromium, total [as Cr] | daily maximum | ≤ 2.77 mg/L | all year | 101 |
| Copper, total [as Cu] | quarterly average | ≤ .175 mg/L | all year | 101 |
| Copper, total [as Cu] | daily maximum | ≤ .35 mg/L | all year | 101 |
| Lead, total [as Pb] | quarterly average | ≤ .022 mg/L | all year | 101 |
| Lead, total [as Pb] | daily maximum | ≤ .044 mg/L | all year | 101 |
| Nickel, total [as Ni] | quarterly average | ≤ .55 mg/L | all year | 101 |
| Nickel, total [as Ni] | daily maximum | ≤ 1.1 mg/L | all year | 101 |
| Silver, total [as Ag] | quarterly average | ≤ .0015 mg/L | all year | 101 |
| Silver, total [as Ag] | daily maximum | ≤ .003 mg/L | all year | 101 |
| Zinc, total [as Zn] | quarterly average | ≤ .277 mg/L | all year | 101 |
| Zinc, total [as Zn] | daily maximum | ≤ .554 mg/L | all year | 101 |
| Trichloroethylene | annual average | ≤ .162 mg/L | all year | 101 |
| Trichloroethylene | daily maximum | ≤ .324 mg/L | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Organics, total toxic [TTO] | daily maximum | ≤ 1.37 mg/L | all year | 101 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 15 Electronic and Other Electrical Equipment permits in Pennsylvania.
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