Okla. Admin. Code § tit. 252, ch. 628, app A
Parameter | IPR Benchmark (µg/L unless otherwise noted) |
1. GENERAL BENCHMARKS | |
CBOD5 | 5.0 mg/L daily maximum |
Flow | Monitor continuously |
PH | 6.5 to 9.0 standard units |
TOC | Monitor daily |
TSS | 5.0 mg/L daily maximum |
Turbidity | Turbidity shall not exceed the following: * 2 NTU daily average; * 5 NTU > 5% of the daily maximum per month; or * 10 NTU daily maximum . |
TRC or TRO | No measureable amount (<0.1 mg/L) daily maximum |
2. PATHOGEN BENCHMARKS | |
Pathogens | Disinfection from secondary treated effluent to end of pipe discharge shall achieve: (1) 5-log removal or inactivation of adenovirus type 15; (2) 5-log removal or inactivation of Salmonella typhimurium; (3) 3-log removal or inactivation of Cryptosporidium oocysts; and (4) 3-log removal or inactivation of Giardia lamblia cysts. |
Total coliform | No measurable amount (<2 per 100 milliliters) |
3. PRIMARY BENCHMARKS | |
3.1 Non-Conservative STibstances | |
3.1.1 Disinfection Byproducts | |
Bromate | 10 |
Chlorine Dioxide {as CIO2) | 800 |
Haloacetic acids (HAAS) | 60 |
Total Trihalomethanes (TTHMs) | 80 |
3.1.2 Nutrients | |
Nitrate (as N) | 10 mg/L |
Nitrite (as N) | 1 mg/L |
3.2 Conservative Substances | |
3.2.1 Metals and Inorganics | |
Antimony | 6 |
Arsenic | 10 |
Barium | 2,000 |
Beryllium | 4 |
Chromium, Total | 100 |
Fluoride | 4,000 |
Selenium | 50 |
Thallium | 2 |
3.2.2 Organlcs | |
Benzene | 5 |
Benzo{a)pyrene (PAHs) | 0.2 |
Carbofuran | 40 |
Carbon Tetrachloride | 5 |
Chlorobenzene | 100 |
1, 2-Dibromo-3-chloropropane (DBCP) | 0.2 |
o-Dichlorobenzene | 600 |
p-Dichlorobenzene | 75 |
1, 2-Dichloroethane | 5 |
1,1-Dichloroethylene | 7 |
cis-1, 2-Dichloroethylene | 70 |
trans-1, 2-Dichloroethylene | 100 |
Dichloromethane | 5 |
1, 2-Dichloropropane | 5 |
Di(2 -ethyIhexy1)adipate | 400 |
Di(2 -ethylhexyl)phthalate | 6 |
Ethylbenzene | 700 |
Ethylene Dibromide | 0.05 |
Hexachlorocyclopentadiene | 50 |
Pentachlorophenol | 1 |
Styrene | 100 |
Tetrachloroethylene | 5 |
Toluene | 1, 000 |
1, 2, 4-Trichlorobenzene | 70 |
1, 1, 1-Trichloroethane | 200 |
1, 1, 2-Trichloroethane | 5 |
Trichloroethylene | 5 |
Vinyl Chloride | 2 |
Xylenes (Total) | 10,000 |
3.2.3 Pesticides | |
Alachlor | 2 |
Atrazine | 3 |
2, 4-D | 70 |
Dalapon | 200 |
Dinoseb | 7 |
Diquat | 20 |
Endothall | 100 |
Glyphosate | 700 |
Heptachlor Epoxide | 0.2 |
Lindane | 0.2 |
Oxamyl (Vydate) | 200 |
Picloram | 500 |
Simazine | 4 |
Toxaphene | 3 |
2, 4, 5-TP (Silvex) | 50 |
3.2.4 Radionuclides | |
Alpha particles | 15 pCi/L |
Beta particles and photon emitters | 4 millirems per year |
Radium 22 6 and Radium 22 8 (combined) | 5 pCi/L |
Uranium | 30 |
4. IPR BENCHMARKS FOR ADDITIONAL CONSERVATIVE PARAMETERS | |
Chlorides | Calculated1 |
Sulfates | Calculated1 |
Total Dissolved Solids (TDS) | Calculated1 |
Aluminum | Calculated1 (2002) |
Iron | Calculated1 (3002) |
Manganese | Calculated1 (502) |
5. IPR BENCHMARKS FOR NUTRIENTS | |
Total Nitrogen | 8 mg/L monthly average; 12 mg/L daily maximum |
Total Phosphorus | 0.2 mg/L monthly average; 0.3 mg/L daily maximum |
6. OTHER IPR BENCHMARKS | |
Foaming Agents | 500 |
1Effluent limitations shall be calculated in accordance with OAC 252:628-3-6.
2EPA recommendation for drinking water.
Okla. Admin. Code tit. 252, ch. 628, app A