Department of Health Seal

TGM for the Implementation of the Hawai'i State Contingency Plan
Appendix 11-A
Laboratory Methods for Soil Samples

Appendix 11-A


Laboratory Methods, Containers, Preservation, and Holding Times for Multi Increment Soil Samples
Parameter Method7 Container Preservation Holding Time1
TPH-G 5035/8015
LUFT
21 L Glass jar containing combined increments Methanol and <6°C 14 days
Individual soil plugs in sealable airtight coring tool or sealable airtight vial 3Immediately freeze to <-7°C Within 14 days, combine in methanol at lab and test
4Individual soil plugs in sealable airtight coring tool or sealable airtight vial <6°C Within 48 hours, combine in methanol at lab or freeze to <-7°C in lab, and test within 14 days
51 L Glass jar containing combined increments Na2SO4 in reagent water, <6°C 14 days
TPH-D 3550/8015
3550/8270
3540/8270
LUFT
Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
BTEX, MTBE 5035/8015
5035/8021
5035/8260
21 L Glass jar containing combined increments Methanol and <6°C 14 days
Individual soil plugs in sealable airtight coring tool or sealable airtight vial 3Immediately freeze to <-7°C Within 14 days, combine in methanol at lab and test
4Individual soil plugs in sealable airtight coring tool or sealable airtight vial <6°C Within 48 hours,combine in methanol at lab or freeze to <-7°C in lab, and test within 14 days
51 L Glass jar containing combined increments Na2SO4 in reagent water, <6°C 14 days
6PAHs, SVOCs 3540/8310
3550/8310
3540/8270
3550/8270
8100
Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
HVOCs 5035/8021 21 L Glass jar containing combined increments Methanol and <6°C 14 days
Individual soil plugs in sealable airtight coring tool or sealable airtight vial 3Immediately freeze to <-7°C Within 14 days, combine in methanol at lab and test
4Individual soil plugs in sealable airtight coring tool or sealable airtight vial <6°C Within 48 hours, combine in methanol at lab or freeze to <-7°C in lab, and test within 14 days
51 L Glass jar containing combined increments Na2SO4 in reagent water, <6°C 14 days
VOCs 5035/8260 21 L Glass jar containing combined increments Methanol and <6°C 14 days
Individual soil plugs in sealable airtight coring tool or sealable airtight vial 3Immediately freeze to <-7°C Within 14 days, combine in methanol at lab and test
4Individual soil plugs in sealable airtight coring tool or sealable airtight vial <6°C Within 48 hours, combine in methanol at lab or freeze to <-7°C in lab, and test within 14 days
51 L Glass jar containing combined increments Na2SO4 in reagent water, <6°C 14 days
6SVOCs 3550/8270 Dedicated heavy-duty, sealable plastic bag <6°C 14 days
Metals (except Mercury and Chromium VI) 3050/6010
3050/6020
Dedicated heavy-duty, sealable plastic bag None 6 months
Mercury 7471 Dedicated heavy-duty, sealable plastic bag <6°C 28 days
Chromium VI 7196 Dedicated heavy-duty, sealable plastic bag <6°C E: 30 days
A: 7 days
PCBs 3540/8082
3550/8082
8081 (Aroclors Only)
Dedicated heavy-duty, sealable plastic bag <6°C none
Chlorinated Herbicides 8151 Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Organochlorine Pesticides 8081 Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Triazine Pesticides 8141 Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Organophosphorus Pesticides 8141 Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Carbamates 8321 Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Fumigants 5035/8260 21 L Glass jar containing combined increments Methanol and <6°C 14 days
Individual soil plugs in sealable airtight coring tool or sealable airtight vial 3Immediately freeze to <-7°C Within 14 days, combine in methanol at lab and test
4Individual soil plugs in sealable airtight coring tool or sealable airtight vial <6°C Within 48 hours, combine in methanol at lab or freeze to <-7°C in lab, and test within 14 days
51 L Glass jar containing combined increments Na2SO4 in reagent water, <6°C 14 days
Pentachlorophenol 8270
8151
Dedicated heavy-duty, sealable plastic bag <6°C E: 14 days
A: 40 days
Glyphosate EPA 547 Dedicated heavy-duty, sealable plastic bag <6°C 14 days
Cyanide 9013
EPA 335.3
Dedicated heavy-duty, sealable plastic bag <6°C 14 days
Dioxins/Furans 8290
8280
Dedicated heavy-duty, sealable plastic bag <6°C none

 

Notes:  
1. Holding times begin from the time of sample collection in the field
2. A methodology for the collection of Multi-increment samples for volatile analysis is discussed in Section 4.2.8. The sample container must be large enough to accommodate 30 to 50 soil increments, preserved with 1 milliliter of methanol per 1 gram of soil, and additional methanol to cover the sample as needed. Since methanol is toxic and flammable, DOT and IATA transportation regulations apply and must be considered in the selection of this preservation method, especially if samples need to be shipped by air to a laboratory for testing. Small quantity exemptions for shipping (where specific hazardous material containers, specific shipping containers, labelling, or other requirements do not apply) may be appropriate if the volume of methanol in each individual container inside a shipping package is limited (typically 30 mL), and the total quantity of methanol in each shipping package for air transport is limited (typically 500 mL). Always check with current DOT and IATA hazardous material shipping regulations to ensure compliance.
3. However, do not freeze samples below -20°C due to potential problems with seals on coring tool or vials. and subsequent VOC loss upon thawing samples.
4, Not recommended for aromatic hydrocarbons (e.g. BTEX) in biologically active soils (e.g. garden soils, fertilized soils).
5. Work with lab on appropriate ratio of Na2SO4 in reagent water for mass of multiple soil increments to be collected. Should be used only for non-calcareous soils (calcareous soils may be commonly encountered in coastal areas). Check with lab on other precautions for this acid preservation method, as some compounds within the olefins, ketones, esters, ethers, and sulfide classes may react and therefore results may not be representative of the soil sampled (e.g. generally not recommended for VOCs such as styrene, TCE, or vinyl chloride). Sodium bisulfate is also a strong mineral acid, so there are associated shipping restrictions by DOT and/or IATA that must be considered.
6. Refer to Section 4.2.8, Appendix 4-B and Section 5 for discussions of soil samples to be tested for VOCs and SVOCs. Include naphthalene in VOC analyses. Subsample bulk multi increment sample immediately upon receipt without drying for testing of SVOCs.
7. Where the term “EPA" is used with a given method number the prefix indicates that the method comes from United States Environmental Protection Agency (EPA) wastewater and drinking water standards, both published and maintained by the EPA Safe Drinking Water Act (SDWA) and/or Clean Water Act (CWA). For methods that are presented without the “EPA" notation, the methods come from the guidance document “Test Methods for Evaluating Solid Waste Physical/Chemical Methods" (SW-846). Although SW-846 was written by the EPA originally, they are guidance documents and not prescriptive as the EPA prefix methods. Holding times are from SW-846 (USEPA 2007). A longer holding time may be appropriate if it can be demonstrated that the reported analyte concentrations are not adversely affected from preservation, storage and analyses performed outside the recommended holding times.
   
BTEX Benzene, toluene, ethylbenzene, and xylene
Dioxins Polychlorinated dibenzodioxins
DOT Department of Transportation
Furans Polychlorinated dibenzofurans
HVOCs Halogenated volatile organic compounds
IATA International Air Transportation Association
MTBE Methyl-tert butyl ether
PAHs Polynuclear aromatic hydrocarbons
PCBs Polychlorinated biphenyls
SVOCs Semi-volatile organic compounds
TPH-G Total petroleum hydrocarbons as gasoline
TPH-D Total petroleum hydrocarbons as diesel
TPH-O Total petroleum hydrocarbons as oil
VOCs Volatile organic compounds
< Less than or equal to
°C Degree Celsius
g Gram
L Liter
mL Milliliter
Na2SO4 Sodium bisulfate
MIS Multi-Increment sample
E Hold time to extraction
A Hold time after extraction until analysis
   
References:  
USEPA, 2007, Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (Revision 5) : U.S. Environmental Protection Agency, Office of Solid Waste, SW-846 Manual, Washington, D.C., February 2007 (and updates).