Surface Water Standards Table: Technical Memorandum
Surface water monitoring results should be compared to the standards in the table below. The standards are based on the following hierarchy:
- EPA Primary Drinking Water MCLs (40 CFR 141) as reference in 18 AAC 70
- Alaska Pollutant Discharge Elimination System (APDES) Multisector General Permit for Storm Water Discharges Associated with Industrial Activity (MSGP), Sector L –Landfills, Land Application Site, and Open Dumps
- National Secondary Drinking Water Regulation standards under 40 CFR 143
- ADEC 18 AAC 75.345, Table C groundwater cleanup levels
- EPA Lifetime Health Advisory Levels
- ADEC 18 AAC 70, Water Quality Standards
- Where no standard exists, a site-specific standard will be developed by the facility in consultation with ADEC if the constituent is detected in surface water
The standards contained in this table are effective July 9, 2018. The standards will be updated as needed.
| CAS RN | Constituent | Standard | Unit | Source |
|---|---|---|---|---|
| 67-64-1 | Acetone | 14,000 | µg/L | D |
| 107-13-1 | Acrylonitrile | 6 | µg/L | A |
| 7664-41-7 | Ammonia Nitrogen | 10,000 | µg/L | B |
| 7440-36-0 | Antimony | 6 | µg/L | A |
| 7440-38-2 | Arsenic | 10 | µg/L | A |
| 7440-39-3 | Barium | 2000 | µg/L | A |
| 71-43-2 | Benzene | 5 | µg/L | A |
| 7440-4107 | Beryllium | 4 | µg/L | A |
| Biochemical oxygen demand | 140,000 | µg/L | B | |
| 74-97-5 | Bromochloromethane | 90 | µg/L | E |
| 75-27-4 | Bromodichloromethane | 1.3 | µg/L | D |
| 75-25-2 | Bromoform; Tribromomethane | 33 | µg/L | D |
| 7440-43-9 | Cadmium | 5 | µg/L | A |
| 7440-70-2 | Calcium | **** | ||
| 75-15-0 | Carbon disulfide | 810 | µg/L | D |
| 56-23-5 | Carbon tetrachloride | 5 | µg/L | A |
| Chemical oxygen demand | G | |||
| Chlorides | 250,000 | µg/L | C | |
| 108-90-7 | Chlorobenzene | 100 | µg/L | A |
| 75-00-3 | Chloroethane; Ethyl chloride | 21,000 | µg/L | D |
| 67-66-3 | Chloroform; Trichloromethane | 2.2 | µg/L | D |
| Total | Chromium | 100 | µg/L | A |
| 7440-48-4 | Cobalt | G | ||
| 7440-50-8 | Copper | 1,300 | µg/L | A |
| 124-48-1 | Dibromochloromethane; Chlorodibromomethane | 8.7 | µg/L | D |
| 75-34-3 | 1,1-Dichlorethane; Ethylidene chloride | 28 | µg/L | D |
| 75-35-4 | 1,1-Dichloroethylene; 1,1-Dichloroethene; Vinylidene chloride | 7 | µg/L | A |
| 156-59-2 | cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene | 70 | µg/L | A |
| 156-60-5 | trans-1, 2-Dichloroethylene; trans-1,2-Dichloroethene | 360 | µg/L | D |
| 96-12-8 | 1,2-Dibromo-3-chloropropane; DBCP | 0.2 | µg/L | A |
| 106-93-4 | 1,2-Dibromoethane; Ethylene dibromide; EDB | 0.075 | µg/L | D |
| 95-50-1 | o-Dichlorobenzene; 1,2-Dichlorobenzene | 600 | µg/L | A |
| 106-46-7 | p-Dichlorobenzene; 1,4-Dichlorobenzene | 75 | µg/L | A |
| 107-06-2 | 1,2-Dichloroethane; Ethylene dichloride | 5 | µg/L | A |
| 110-57-6 | trans-1, 4-Dichloro-2-butene | G | ||
| 78-87-5 | 1,2-Dichloropropane; Propylene dichloride | 5 | µg/L | A |
| 10061-01-5 | cis-1,3-Dichloropropene | 4.7* | µg/L | D |
| 10061-02-6 | trans-1,3-Dichloropropene | 4.7* | µg/L | D |
| Diesel-Range Organics (DRO) | 1,500 | µg/L | D | |
| Dissolved oxygen | > 4,000 | F | ||
| 100-41-4 | Ethylbenzene | 700 | µg/L | A |
| Gasoline-Range Organics (GRO) | 2,200 | µg/L | D | |
| 591-78-6 | 2-Hexanone; Methyl butyl ketone | 38 | µg/L | D |
| 7439-89-6 | Iron | 1,000 | µg/L | B |
| 7439-92-1 | Lead | 15 | µg/L | A |
| 7439-95-4 | Magnesium | **** | ||
| 7439-96-5 | Manganese | 50 | µg/L | C |
| 7439-97-6 | Mercury | 2 | µg/L | A |
| 74-83-9 | Methyl bromide; Bromomethane | 7.5 | µg/L | D |
| 74-87-3 | Methyl chloride; Chloromethane | 190 | µg/L | D |
| 78-93-3 | Methyl ethyl ketone; MEK; 2-Butanone | 5,600 | µg/L | D |
| 74-88-4 | Methyl iodide; Idomethane | G | ||
| 108-10-1 | 4-Methyl-2-pentanone; Methyl isobutyl ketone | 6,300 | µg/L | D |
| 74-95-3 | Methylene bromide; Dibromomethane | 8.3 | µg/L | D |
| 75-09-2 | Methylene chloride; Dichloromethane | 110 | µg/L | D |
| 7440-02-0 | Nickel | 390 | µg/L | D |
| Nitrate Nitrogen | 10,000 | µg/L | A | |
| pH | 6.5-8.5 | B | ||
| 7440-09-07 | Potassium | G | ||
| Redox potential at collection | G | |||
| Residual-Range Organics (RRO) | 1,100 | µg/L | D | |
| 7782-49-2 | Selenium | 50 | µg/L | A |
| 7440-22-4 | Silver | 100 | µg/L | C |
| Sodium | **** | |||
| Sodium Absorption Ratio(SAR) | 2.5** | A | ||
| Sulfate | 250,000 | µg/L | C | |
| 100-42-5 | Styrene | 100 | µg/L | A |
| TAH (Sum of BTEX analytical results) | 10 | µg/L | F | |
| TAqH (Sum of BTEX and PAH analytical results) | 15 | µg/L | F | |
| Temperature at collection | G | |||
| 630-20-6 | 1,1,1,2-Tetrachloroethane | 5.7 | µg/L | D |
| 79-34-5 | 1,1,2,2-Tetrachloroethane | 0.76 | µg/L | D |
| 127-18-4 | Tetrachloroethylene; Tetrachloroethene; Perchloroethylene | 5 | µg/L | A |
| 7440-28-0 | Thallium | 2 | µg/L | A |
| 7440-31-5 | Tin | G | ||
| 108-88-3 | Toluene | 1000 | µg/L | A |
| Total kjeldahl nitrogen | G | |||
| Total dissolved solids | 500,000 | µg/L | C | |
| 71-55-6 | 1,1,1-Trichloroethane; Methylchloroform | 200 | µg/L | A |
| 79-00-5 | 1,1,2-Trichloroethane | 5 | µg/L | A |
| 79-01-6 | Trichloroethylene; Trichloroethene | 5 | µg/L | A |
| 75-69-4 | Trichlorofluoromethane; CFC-11 | 5,200 | µg/L | D |
| 96-18-4 | 1,2,3-Trichloropropane | 0.0075 | µg/L | D |
| Turbidity | 5*** | NTU | F | |
| 7440-62-2 | Vanadium | 86 | µg/L | D |
| 108-05-4 | Vinyl acetate | 410 | µg/L | D |
| 75-01-4 | Vinyl chloride | 2 | µg/L | A |
| 1330-20-7 | Xylenes | 10,000 | µg/L | A |
| 7440-66-6 | Zinc | 200 | µg/L | B |
Notes:
*The total of cis-1,3-Dichloropropene and trans-1,3-Dichloropropene may not exceed 4.7 µg/L.
**SAR = Na+ / [(Ca2+ + Mg2+)/2]0.5
***May not exceed 5 nephelometric turbidity units (NTU) above natural conditions when the natural turbidity is 50 NTU or less, and may not have more than 10% increase in turbidity when the natural turbidity is more than 50 NTU, not to exceed a maximum increase of 25 NTU.
****No standard - used to calculate SAR
Acronyms and Abbreviations
- CAS RN = Chemical Abstract Service Registry Number
- MCL = Maximum Contaminant Level
- SAR = Sodium Absorption Ratio
- μg/L = microgram per liter
Standard Source Key
- A = EPA Primary Drinking Water MCLs (40 CFR 141)
- B = APDES MSGP, Sector L
- C = EPA Drinking Water Secondary MCLs (40 CFR 143)
- D = 18 AAC 75 Table C
- E = EPA Lifetime Health Advisory Level
- F = Water Quality Standards (18 AAC 70)
- G = Where no standard exists, a site-specific standard will be developed by the facility in consultation with ADEC
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