IDEM R2 Soil Published Levels - Indiana Metals
IDEM R2 soil direct-contact published levels for metals. Residential and commercial/industrial values for 150 chemicals from WASTE-0046-R2.
Overview
These are Indiana’s Published Level Table 1 soil direct-contact standards for metals and inorganic compounds, from the IDEM Risk-based Closure Guide (WASTE-0046-R2, “the R2”), effective March 28, 2025. IDEM renamed these values from “Screening Levels” to “Published Levels” in the 2022 R2 update.
Risk basis: Indiana’s published levels are derived at a 1E-05 cancer risk (1 in 100,000) and a hazard quotient (HQ) of 1.0. This is 10 times less conservative than EPA’s default 1E-06 risk level. For carcinogenic metals such as arsenic and hexavalent chromium, Indiana’s values are approximately 10 times higher than default EPA Regional Screening Levels.
Qualifier key:
- C = Carcinogenic - value is cancer risk-based
- N = Noncarcinogenic - value is hazard quotient-based
- S = Soil saturation cap
- L = 100,000 mg/kg cap
- D = Detection limit-based
- M = Based on the MCL
Blank cells indicate no published level for that chemical and pathway - not a level of zero.
Lead special case: Indiana’s residential soil published level for lead is 200 mg/kg. Where other sources of lead are present (for example, lead-based paint or leaded gasoline in combination with site contamination), IDEM may apply a more protective level of 100 mg/kg. See the R2 for the multi-source lead evaluation procedure. For federal lead standards, see the Lead Standards Quick Reference.
Soil Direct-Contact Published Levels - Metals
| Chemical | CAS Number | Residential (mg/kg) | Q | Commercial/Industrial (mg/kg) | Q |
|---|---|---|---|---|---|
| Aluminum | 7429-90-5 | 100,000 | L | 100,000 | L |
| Aluminum metaphosphate | 13776-88-0 | 100,000 | L | 100,000 | L |
| Aluminum Phosphide | 20859-73-8 | 40 | N | 500 | N |
| Aluminum salts of inorganic phosphates | E524680405 | 30,000 | N | 100,000 | L |
| Ammonium Perchlorate | 7790-98-9 | 80 | N | 800 | N |
| Ammonium Picrate | 131-74-8 | 200 | N | 2,000 | N |
| Ammonium Sulfamate | 7773-06-0 | 20,000 | N | 100,000 | L |
| Antimony (metallic) | 7440-36-0 | 40 | N | 500 | N |
| Antimony Pentoxide | 1314-60-9 | 50 | N | 600 | N |
| Antimony Tetroxide | 1332-81-6 | 40 | N | 500 | N |
| Antimony Trioxide | 1309-64-4 | 100,000 | L | 100,000 | L |
| Arsenic, Inorganic | 7440-38-2 | 10 | C | 30 | C |
| Arsine | 7784-42-1 | 0.4 | N | 4 | N |
| Avermectin B1 | 65195-55-3 | 40 | N | 300 | N |
| Barium | 7440-39-3 | 20,000 | N | 100,000 | L |
| Benzenediamine-2-methyl sulfate, 1,4- | 6369-59-1 | 30 | N | 200 | C |
| Beryllium and compounds | 7440-41-7 | 200 | N | 2,000 | N |
| Boron And Borates Only | 7440-42-8 | 20,000 | N | 100,000 | L |
| Bromate | 15541-45-4 | 10 | C | 50 | C |
| Cadmium (Diet) | 7440-43-9 | 10 | N | 100 | N |
| Calcium Cyanide | 592-01-8 | 100 | N | 1,000 | N |
| Ceric oxide | 1306-38-3 | 100,000 | L | 100,000 | L |
| Chlorite (Sodium Salt) | 7758-19-2 | 3,000 | N | 40,000 | N |
| Chromium(III) (Soluble Compounds) | 16065-83-1 | 100,000 | L | 100,000 | L |
| Chromium(III), Insoluble Salts | 16065-83-1 | 100,000 | L | 100,000 | L |
| Chromium(VI) | 18540-29-9 | 10 | C | 200 | C |
| Cobalt | 7440-48-4 | 30 | N | 400 | N |
| Copper | 7440-50-8 | 4,000 | N | 50,000 | N |
| Copper Cyanide | 544-92-3 | 500 | N | 6,000 | N |
| Dibutyltin Compounds | E1790661 | 30 | N | 300 | N |
| Dipotassium phosphate | 7758-11-4 | 100,000 | L | 100,000 | L |
| Disodium phosphate | 7558-79-4 | 100,000 | L | 100,000 | L |
| Endosulfan Sulfate | 1031-07-8 | 500 | N | 5,000 | N |
| Fluoride | 16984-48-8 | 4,000 | N | 50,000 | N |
| Fluorine (Soluble Fluoride) | 7782-41-4 | 7,000 | N | 70,000 | N |
| Glufosinate, Ammonium | 77182-82-2 | 500 | N | 5,000 | N |
| Guanidine Chloride | 50-01-1 | 2,000 | N | 20,000 | N |
| Guanidine Nitrate | 506-93-4 | 3,000 | N | 30,000 | N |
| Hydrazine Sulfate | 10034-93-2 | 3 | C | 10 | C |
| Iodine | 7553-56-2 | 1,000 | N | 10,000 | N |
| Iron | 7439-89-6 | 80,000 | N | 100,000 | L |
| Lanthanum | 7439-91-0 | 5 | N | 60 | N |
| Lanthanum Acetate Hydrate | 100587-90-4 | 2 | N | 20 | N |
| Lanthanum Chloride Heptahydrate | 10025-84-0 | 2 | N | 20 | N |
| Lanthanum Chloride, Anhydrous | 10099-58-8 | 3 | N | 30 | N |
| Lanthanum Nitrate Hexahydrate | 10277-43-7 | 2 | N | 20 | N |
| Lead acetate | 301-04-2 | 40 | C | 100 | C |
| Lead and Compounds | 7439-92-1 | 200 | NL | 800 | NL |
| Lead and Compounds (with other sources of lead present, see Footnote) | 7439-92-1 | 100 | NL | NL | NL |
| Lead Phosphate | 7446-27-7 | 1,000 | C | 4,000 | C |
| Lead subacetate | 1335-32-6 | 200 | C | 600 | C |
| Lithium | 7439-93-2 | 200 | N | 2,000 | N |
| Lithium bis[(trifluoromethyl)sulfonyl]azanide | 90076-65-6 | 30 | N | 400 | N |
| Lithium Perchlorate | 7791-03-9 | 80 | N | 800 | N |
| Manganese (Non-diet) | 7439-96-5 | 3,000 | N | 30,000 | N |
| Mercuric Chloride (and other Mercury salts) | 7487-94-7 | 30 | N | 400 | N |
| Mercury (elemental) | 7439-97-6 | 3 | S | 3 | S |
| Methyl Mercury | 22967-92-6 | 10 | N | 100 | N |
| Methylbenzene-1,4-diamine sulfate, 2- | 615-50-9 | 30 | N | 200 | C |
| Molybdenum | 7439-98-7 | 500 | N | 6,000 | N |
| Monoaluminum phosphate | 13530-50-2 | 100,000 | L | 100,000 | L |
| Monochloramine | 10599-90-3 | 10,000 | N | 100,000 | L |
| Monopotassium phosphate | 7778-77-0 | 100,000 | L | 100,000 | L |
| Monosodium phosphate | 7558-80-7 | 100,000 | L | 100,000 | L |
| Nickel Acetate | 373-02-4 | 900 | N | 8,000 | N |
| Nickel Carbonate | 3333-67-3 | 900 | N | 8,000 | N |
| Nickel Hydroxide | 12054-48-7 | 1,000 | N | 10,000 | N |
| Nickel Oxide | 1313-99-1 | 1,000 | N | 10,000 | N |
| Nickel Refinery Dust | E715532 | 1,000 | N | 10,000 | N |
| Nickel Soluble Salts | 7440-02-0 | 2,000 | N | 20,000 | N |
| Nickel Subsulfide | 12035-72-2 | 6 | C | 20 | C |
| Nickelocene | 1271-28-9 | 8 | C | 30 | C |
| Nitrate (measured as nitrogen) | 14797-55-8 | 100,000 | L | 100,000 | L |
| Nitrite (measured as nitrogen) | 14797-65-0 | 10,000 | N | 100,000 | L |
| Nitroguanidine | 556-88-7 | 9,000 | N | 80,000 | N |
| Pentaerythritol tetranitrate (PETN) | 78-11-5 | 800 | N | 5,000 | C |
| Perchlorate and Perchlorate Salts | 14797-73-0 | 80 | N | 800 | N |
| Phenylmercuric Acetate | 62-38-4 | 7 | N | 70 | N |
| Phosphoric Acid | 7664-38-2 | 100,000 | L | 100,000 | L |
| Phosphoric acid, aluminum salt (1:1) [aluminum phosphate] | 7784-30-7 | 100,000 | L | 100,000 | L |
| Phosphoric acid, aluminum sodium salt (1:X:X) [sodium aluminum phosphate acidic (acidic SALP)] | 7785-88-8 | 100,000 | L | 100,000 | L |
| Phosphorus | 7723-14-0 | 2 | N | 20 | N |
| Phosphorus, white | 12185-10-3 | 2 | N | 20 | N |
| Polyphosphoric acid | 8017-16-1 | 100,000 | L | 100,000 | L |
| Potassium Cyanide | 151-50-8 | 200 | N | 2,000 | N |
| Potassium Perchlorate | 7778-74-7 | 80 | N | 800 | N |
| Potassium salts of inorganic phosphates | E524680403 | 100,000 | L | 100,000 | L |
| Potassium Silver Cyanide | 506-61-6 | 500 | N | 6,000 | N |
| Potassium tripolyphosphate | 13845-36-8 | 100,000 | L | 100,000 | L |
| Propylene Glycol Dinitrate | 6423-43-4 | 100,000 | L | 100,000 | L |
| Selenious Acid | 7783-00-8 | 500 | N | 6,000 | N |
| Selenium | 7782-49-2 | 500 | N | 6,000 | N |
| Selenium Sulfide | 7446-34-6 | 500 | N | 6,000 | N |
| Silica (crystalline, respirable) | 7631-86-9 | 100,000 | L | 100,000 | L |
| Silver | 7440-22-4 | 500 | N | 6,000 | N |
| Silver Cyanide | 506-64-9 | 10,000 | N | 100,000 | L |
| Sodium aluminum phosphate (anhydrous) | 10279-59-1 | 100,000 | L | 100,000 | L |
| Sodium aluminum phosphate (tetrahydrate) | 10305-76-7 | 100,000 | L | 100,000 | L |
| Sodium Azide | 26628-22-8 | 400 | N | 5,000 | N |
| Sodium Cyanide | 143-33-9 | 100 | N | 1,000 | N |
| Sodium Fluoride | 7681-49-4 | 5,000 | N | 60,000 | N |
| Sodium Fluoroacetate | 62-74-8 | 2 | N | 20 | N |
| Sodium hexametaphosphate | 10124-56-8 | 100,000 | L | 100,000 | L |
| Sodium Metavanadate | 13718-26-8 | 100 | N | 1,000 | N |
| Sodium Perchlorate | 7601-89-0 | 80 | N | 800 | N |
| Sodium polyphosphate | 68915-31-1 | 100,000 | L | 100,000 | L |
| Sodium pyrophosphate | 7758-16-9 | 100,000 | L | 100,000 | L |
| Sodium salts of inorganic phosphates | E524680404 | 100,000 | L | 100,000 | L |
| Sodium trimetaphosphate | 7785-84-4 | 100,000 | L | 100,000 | L |
| Sodium tripolyphosphate | 7758-29-4 | 100,000 | L | 100,000 | L |
| Sodium Tungstate | 13472-45-2 | 90 | N | 900 | N |
| Sodium Tungstate Dihydrate | 10213-10-2 | 90 | N | 900 | N |
| Strontium, Stable | 7440-24-6 | 70,000 | N | 100,000 | L |
| Sulfuric Acid | 7664-93-9 | 100,000 | L | 100,000 | L |
| Tetraethyl Dithiopyrophosphate | 3689-24-5 | 40 | N | 400 | N |
| Tetraethyl Lead | 78-00-2 | 0.01 | N | 0.1 | N |
| Tetrapotassium phosphate | 7320-34-5 | 100,000 | L | 100,000 | L |
| Tetrasodium pyrophosphate | 7722-88-5 | 100,000 | L | 100,000 | L |
| Thallic Oxide | 1314-32-5 | 2 | N | 20 | N |
| Thallium (I) Nitrate | 10102-45-1 | 1 | N | 10 | N |
| Thallium (Soluble Salts) | 7440-28-0 | 1 | N | 10 | N |
| Thallium Carbonate | 6533-73-9 | 2 | N | 20 | N |
| Thallium Chloride | 7791-12-0 | 1 | N | 10 | N |
| Thallium Selenite | 12039-52-0 | 1 | N | 10 | N |
| Thallium Sulfate | 7446-18-6 | 2 | N | 20 | N |
| Thiocyanates | E1790665 | 20 | N | 200 | N |
| Tin | 7440-31-5 | 70,000 | N | 100,000 | L |
| Trialuminum sodium tetra decahydrogenoctaorthophosphate (dihydrate) | 15136-87-5 | 100,000 | L | 100,000 | L |
| Tributyl Phosphate | 126-73-8 | 800 | C | 3,000 | C |
| Tributyltin Compounds | E1790679 | 30 | N | 300 | N |
| Tributyltin Oxide | 56-35-9 | 30 | N | 300 | N |
| Tricresyl Phosphate (TCP) | 1330-78-5 | 2,000 | N | 20,000 | N |
| Trimethyl Phosphate | 512-56-1 | 400 | C | 1,000 | C |
| Triphenylphosphine Oxide | 791-28-6 | 2,000 | N | 20,000 | N |
| Triphosphoric acid, aluminum salt (1:1) [aluminum triphosphate] | 13939-25-8 | 100,000 | L | 100,000 | L |
| Tripotassium phosphate | 7778-53-2 | 100,000 | L | 100,000 | L |
| Tris(1,3-Dichloro-2-propyl) Phosphate | 13674-87-8 | 2,000 | N | 20,000 | N |
| Tris(1-chloro-2-propyl)phosphate | 13674-84-5 | 900 | N | 8,000 | N |
| Tris(2,3-dibromopropyl)phosphate | 126-72-7 | 4 | C | 10 | C |
| Tris(2-chloroethyl)phosphate | 115-96-8 | 400 | C | 1,000 | C |
| Tris(2-ethylhexyl)phosphate | 78-42-2 | 2,000 | C | 7,000 | C |
| Trisodium phosphate | 7601-54-9 | 100,000 | L | 100,000 | L |
| Tungsten | 7440-33-7 | 90 | N | 900 | N |
| Uranium | 7440-61-1 | 20 | N | 200 | N |
| Vanadium and Compounds | 7440-62-2 | 500 | N | 6,000 | N |
| Vanadium Pentoxide | 1314-62-1 | 900 | N | 8,000 | N |
| Zinc and Compounds | 7440-66-6 | 30,000 | N | 100,000 | L |
| Zinc Cyanide | 557-21-1 | 5,000 | N | 60,000 | N |
| Zinc Phosphide | 1314-84-7 | 30 | N | 400 | N |
| Zirconium | 7440-67-7 | 9 | N | 90 | N |
No results found.
Practical Notes
Background concentrations: Many metals occur naturally in Indiana soils. Arsenic, chromium, nickel, and other metals may be present at concentrations near or above published levels due to geogenic sources, not contamination. When metals exceed published levels, compare to regional background data before concluding contamination exists. IDEM guidance addresses naturally occurring metal concentrations.
Arsenic is the metal most commonly driving residential soil cleanup at Indiana sites due to its low published level relative to natural background in some areas. Arsenic speciation (total vs. hexavalent) affects the risk calculation. IDEM typically evaluates total arsenic unless speciation data are available.
Chromium exists in two oxidation states with very different toxicity: hexavalent chromium (Cr-VI) is a human carcinogen with strict standards, while trivalent chromium (Cr-III) is an essential nutrient with much less restrictive levels. Total chromium analytical results require speciation before meaningful comparison to carcinogenic chromium standards.
Lead at residential properties should also be compared to the EPA residential soil RSL (200 ppm) and EPA’s Regional Removal Management Level (600 ppm, effective October 2025). Indiana and federal programs may proceed differently at the same lead concentration.
Metals leaching to groundwater: Direct-contact soil standards do not address the soil-to-groundwater leaching pathway. If metals are present in soil, evaluate whether they may be leaching to groundwater and compare groundwater concentrations to the Indiana Groundwater Published Levels - Metals.