Department of Health Seal

TGM for the Implementation of the Hawai'i State Contingency Plan
Appendix 4-A
VOLATILE CHEMICALS REQUIRING FIELD PRESERVATION OF SOIL SAMPLE INCREMENTS

APPENDIX 4-A
RECOMMENDATIONS FOR MIS FIELD PRESERVATION OR LABORATORY SUBSAMPLING BASED ON OVERALL CHEMICAL STABILITY

TABLE 4-A1
Volatile Chemicals Requiring Field Preservation of Soil Sample Increments


      2Vapor Pressure Henry's Law Constant (H)
CHEMICAL PARAMETER 1Physical State Molecular Weight mm Hg (25C) (atm-m3/mol)
VOLATILE CHEMICALS
Preserve Samples in Methanol in the Field (or approved alternative, see text)
(VP>1 AND Molecular Weight <200)
ACETONE V L 58 2.3E+02 3.9E-05
BENZENE V L 78 9.5E+01 5.61E-03
BIS(2-CHLOROETHYL)ETHER V L 143 1.6E+00 1.7E-05
BROMODICHLOROMETHANE V L 164 5.0E+01 2.1E-03
BROMOFORM V S 253 5.4E+00 5.4E-04
BROMOMETHANE V G 95 1.6E+03 6.3E-03
CARBON TETRACHLORIDE V L 154 1.2E+02 2.7E-02
CHLOROBENZENE V L 113 1.2E+01 3.2E-03
CHLOROETHANE V G 65 1.0E+03 1.1E-02
CHLOROFORM V L 119 2.0E+02 3.7E-03
CHLOROMETHANE V G 50 4.3E+03 8.8E-03
CHLOROPHENOL, 2- V L 129 2.5E+00 1.1E-05
DIBROMOCHLOROMETHANE V S 208 5.5E+00 7.8E-04
DIBROMOETHANE, 1,2- V S 188 1.1E+01 6.6E-04
DICHLOROBENZENE, 1,2- V L 147 1.4E+00 1.9E-03
DICHLOROBENZENE, 1,3- V L 147 2.2E+00 1.9E-03
DICHLOROBENZENE, 1,4- V S 147 1.7E+00 2.4E-03
DICHLOROETHANE, 1,1- V L 99 2.3E+02 5.6E-03
DICHLOROETHANE, 1,2- V L 99 7.9E+01 1.2E-03
DICHLOROETHYLENE, 1,1- V L 97 6.0E+02 2.7E-02
DICHLOROETHYLENE, Cis 1,2- V L 97 2.0E+02 4.1E-03
DICHLOROETHYLENE, Trans 1,2- V L 97 3.3E+02 9.3E-03
DICHLOROPROPANE, 1,2- V L 113 5.3E+01 2.9E-03
DICHLOROPROPENE, 1,3- V L 111 3.4E+01 3.7E-03
DIOXANE, 1,4- V L 88 3.8E+01 4.9E-06
ETHANOL V L 46 5.9E+01 6.3E-06
ETHYLBENZENE V L 106 9.6E+00 7.8E-03
METHYL ETHYL KETONE V L 72 9.1E+01 5.6E-05
METHYL ISOBUTYL KETONE V L 100 2.0E+01 1.4E-04
METHYL TERT BUTYL ETHER V L 88 2.5E+02 5.9E-04
METHYLENE CHLORIDE V L 85 4.4E+02 3.2E-03
STYRENE V L 104 6.4E+00 2.7E-03
tert-BUTYL ALCOHOL V L 74 4.1E+01 1.2E-05
TETRACHLOROETHANE, 1,1,1,2- V L 168 4.6E+00 2.4E-03
TETRACHLOROETHANE, 1,1,2,2- V L 168 4.6E+00 3.7E-04
TETRACHLOROETHYLENE V L 166 1.9E+01 1.8E-02
TOLUENE V L 92 2.8E+01 6.6E-03
TPH (gasolines) V L 108 6.8E+02 7.2E-04
TRICHLOROETHANE, 1,1,1- V L 133 1.2E+02 1.7E-02
TRICHLOROETHANE, 1,1,2- V L 133 2.3E+01 8.3E-04
TRICHLOROETHYLENE V L 131 6.9E+01 9.8E-03
TRICHLOROPROPANE, 1,2,3- V L 147 3.7E+00 3.4E-04
TRICHLOROPROPENE, 1,2,3- V L 145 3.7E+00 2.8E-02
VINYL CHLORIDE V G 63 3.0E+03 2.7E-02
XYLENES V L 106 8.0E+00 7.1E-03

Reference: Appendix 1, Table H in HEER Office Environmental Hazard Evaluation guidance (HDOH 2016).

  1. Physical state of chemical at ambient conditions (V - volatile, SV - Semi-Volatile (*SV - Treated as "volatile" in USEPA risk assessment models if H > 0.00001), S - solid, L - liquid, G - gas).
  2. Vapor Pressures from National Library of Medicine TOXNET or ChemID databases.
  3. Check with lab to determine feasibility of wet sieving sample to remove >2mm particles prior to subsampling.
  4. Soil or sediment samples that consist entirely of <2mm material do not require drying and sieving to address fundamental error concerns, although some degree of drying and sieving may be desirable by the laboratory for testing purposes.