EPA · Washington · discharge permits by parameter

Oil and grease, hexane extr method in Washington

• 66Permits carrying a limit
• 17With a recorded exceedance
• 2,470Nationwide

Permits

Other parameters in Washington

• pH5,875
• Turbidity5,423
• Oil and grease visual2,125
• Transparency2,070
• Copper, total [as Cu]1,483
• Zinc, total [as Zn]1,473
• Total Petroleum Hydrocarbons - Diesel781
• Solids, total suspended623
• Lead, total [as Pb]496
• BOD, 5-day, 20 deg. C300
• Solids, total dissolved247
• Flow245
• Coliform, fecal general204
• Phosphorus, total [as P]203
• Nitrite + Nitrate total [as N]190
• Chlorine, total residual189
• Chemical oxygen demand [COD]170
• pH, maximum163
• Chromium, total [as Cr]154
• Arsenic, total [as As]150
• Temperature, water deg. centigrade135
• E. coli123
• Nitrogen, ammonia total [as N]119
• Total Petroleum Hydrocarbons - Gasoline113
• Cadmium, total [as Cd]107
• Mercury, total [as Hg]95
• Benzene, ethylbenzene, toluene, xylene combination91
• Naphthalene89
• Chrysene89
• Benzo[a]pyrene84
• Nickel, total [as Ni]84
• Benzo[a]anthracene82
• Fluoranthene78
• Benzo[b]fluoranthene77
• Pyrene73
• Phenanthrene73
• Indeno[1,2,3-cd]pyrene72
• Oxygen, dissolved [DO]71
• Solids, settleable71
• Benzo[k]fluoranthene70
• pH, minimum70
• Solids, suspended percent removal68
• 1-Methylnaphthalene65
• Benzo[ghi]perylene64
• Flow, in conduit or thru treatment plant61
• 2-Methylnaphthalene59
• Chloride [as Cl]58
• Fluorene56
• Nitrogen, Kjeldahl, total [as N]56
• Selenium, total [as Se]53
• Anthracene53
• Total Petroleum Hydrocarbons - Diesel and Waste Oil51
• Acenaphthene50
• Polychlorinated biphenyls [PCBs]49
• Acenaphthylene48
• Hardness, total [as CaCO3]48
• Acetone48
• Silver, total [as Ag]47
• Dibenz[a,h]anthracene45
• Tetrachloroethylene45

Oil and grease, hexane extr method nationwide