Department of Health Seal

TGM for the Implementation of the Hawai'i State Contingency Plan
Appendix 4-A1
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-A2a
Semi-volatile or Otherwise Unstable Chemicals Requiring Laboratory Subsampling of Soil Samples Prior to Processing


      2Vapor Pressure Henry's Law Constant (H)
CHEMICAL PARAMETER 1Physical State Molecular Weight mm Hg (25C) (atm-m3/mol)
SEMI-VOLATILE AND OTHER SEMI-STABLE CHEMICALS
3,4Subsample Multi Increment Bulk Sample at Laboratory Upon Receipt Without Drying
(VP 0.1 to 1.0 OR Liquid at 25C OR Henry's Constant >1.0E-05)
BIPHENYL, 1,1- *SV S 154 8.9E-03 3.2E-04
BIS(2-CHLOROISOPROPYL)ETHER *SV L 171 8.5E-01 1.1E-04
DALAPON *SV L 143 1.9E-01 9.0E-08
DIBROMO,1,2- CHLOROPROPANE,3- *SV L 236 5.8E-01 1.5E-04
DIMETHYLPHENOL, 2,4- SV S 122 1.0E-01 9.5E-07
HEXACHLOROBUTADIENE SV S 261 2.2E-01 1.0E-02
HEXACHLOROETHANE SV S 237 4.0E-01 3.9E-03
ISOPHORONE SV L 138 4.4E-01 6.6E-06
5MERCURY *SV S 201 2.0E-03 -
METHYL MERCURY SV S 216 - -
NITROBENZENE *SV L 123 2.5E-01 2.4E-05
NITROGLYCERIN SV L 227 2.0E-04 9.8E-08
NITROTOLUENE, 4- SV S 137 1.6E-01 5.6E-06
NITROTOLUENE, 2- *SV S 137 1.9E-01 1.2E-05
NITROTOLUENE, 3- *SV S 137 2.1E-01 2.4E-05
6PAHs (varies, see Table 4-2b) *SV S      
PHENOL SV S 94 3.5E-01 3.4E-07
PROPICONAZOLE SV L 342 1.0E-06 4.1E-09
7TPH (middle distillates) *SV L 170 2 to 26 7.2E-04
TRICHLOROBENZENE, 1,2,4- *SV S 181 4.6E-01 1.4E-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.
  5. The stability of a targeted metal depends in part on the species present and can be highly variable. Identification of specific species of a metal may require the collection of aliquots prior to drying and sieving and should be evaluated on a site-by-site basis with respect to the site investigation objectives
  6. PAHS - See Table 4-B2b. Eighteen targeted PAHs listed in Section 9 of the HEER Office TGM.
  7. TPH diesel may not be adequately extractable from soil or sediment when placed in methanol; aliquots should be collected and extracted at the laboratory (e.g., using methylene chloride).