| Soil Quality Standards for Habitat and Agriculture | Soil Sample Preservation Method|
| Soil Quality Standard for Other Purposes |

Soil Quality Standards for Habitat and Agriculture
Parameter Unit Standard Value Analytical Methods
1. Volatile Organic Compound
1) Benzene mg/kg
Not exceed 6.5 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or other methods approved by PCD
2) Carbon Tetrachloride " Not exceed 2.5 "
3) 1,2-Dichloroethane " Not exceed 3.5 "
4) 1,1-Dichloroethylene " Not exceed 0.5 "
5) cis-1,2-Dichloroethylene " Not exceed 43 "
6) trans-1,2-Dichloroethylene " Not exceed 63 "
7) Dichloromethane " Not exceed 89 "
8) Ethylbenzene " Not exceed 230 "
9) Styrene " Not exceed 1,700 "
10) Tetrachloroethylene " Not exceed 57 "
11) Toluene " Not exceed 520 "
12) Trichloroethylene " Not exceed 28 "
13) 1,1,1-Trichloroethane " Not exceed 630 "
14) 1,1,2-Trichloroethane " Not exceed 8.4 "
15) Total Xylenes " Not exceed 210 "
2. Heavy metals
1) Arsenic mg/kg
Not exceed 3.9 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Furnace Technique or Atomic Absorption, Gaseous Hydride or Atomic Absorption, Borohydride Reduction or other Methods Approved by Pollution Control Department
2) Cadmium and compounds
" Not exceed 37 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Direct Aspiration or Atomic Absorption, Furnace Technique or other Methods Approved by Pollution Control Department
3) Hexavalent Chromium " Not exceed 300 Coprecipitation or Colorimetric or Chelation/Extraction or other Methods Approved by Pollution Control Department
4) Lead " Not exceed 400 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Direct Aspiration or Atomic Absorption, Furnace Technique or other Methods Approved by Pollution Control Department
5) Manganese and compounds " Not exceed 1,800 "
6) Mercury and compounds " Not exceed 23 Cold-Vapor Technique or other Methods Approved by Pollution Control Department
7) Nickel, soluble salts " Not exceed 1,600 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Direct Aspiration or Atomic Absorption, Furnace Technique or other Methods Approved by Pollution Control Department
8) Selenium " Not exceed 390 Inductively Coupled Plasma-Atomic Emission Spectrometry or Atomic Absorption, Furnace Technique or Atomic Absorption, Gaseous Hydride or Atomic Absorption, Borohydride Reduction or other Methods Approved by Pollution Control Department
3. Pesticides
1) Atrazine
mg/kg
Not exceed 22
Gas Chromatography or other Methods Approved by Pollution Control Department
2) Chlordane " Not exceed16 Gas Chromatography/Mass Spectrometry (GC/MS) or other Methods Approved by Pollution Control Department
3) 2,4-D " Not exceed 690 Gas Chromatography or High Performance Liquid Chromatography/Thermal Extraction/Gas Chromatography/Mass Spectrometry (TE/GC/MS) or other Methods Approved by Pollution Control Department
4) DDT " Not exceed 17 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or other Methods Approved by Pollution Control Department
5) Dieldrin " Not exceed 0.3 "
6) Heptachlor " Not exceed 1.1 "
7) Heptachlor Epoxide " Not exceed 0.5 "
8) Lindane " Not exceed 4.4 "
9) Pentachlorophenol " Not exceed 30 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or Gas Chromatography/Fourier Transform Infrared (GC/FT-IR) Spectrometry or other Methods Approved by Pollution Control Department
4. Other Chemicals
1)Benzo (a) pyrene
mg/Kg Not exceed 0.6
Gas Chromatography/Mass Spectrometry (GC/MS), or Thermal Extraction/Gas Chromatography/Mass Spectrometry (TE/GC/MS), or Gas Chromatography/Fourier Transform Infrared (GC/FT-IR) Spectrometry, oror other Methods Approved by Pollution Control Department
2) Cyanide and compounds " Not exceed 11 Total and Amenable Cyanide: Distillation, or Total Amenable Cyanide (Automated Colorimetric, with off-line Distillation), or Cyanide Extraction Procedure for Solids and Oils or other Methods Approved by Pollution Control Department
3) PCBs " Not exceed 2.2 Gas Chromatography or other methods approved by PCD
4) Vinyl Chloride " Not exceed 1.5 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or other methods approved by PCD


Remark

:
1 Test Methods of Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (United States Environmental Protection Agency)
2 Soil Sampling and Preservation Methods must be as specfied

Soil Quality Standard Soil Quality Standard for Other Purposes
Parameter Unit Standard Value Analytical Methods
1. Volatile Organic Compounds
1) Benzene mg/kg
Not exceed 15 Gas Chromatography หor Gas Chromatography/Mass Spectrometry (GC/MS) or other methods approved by PCD
2) Carbon Tetrachloride " Not exceed 5.3 "
3) 1,2-Dichloroethane " Not exceed 7.6 "
4) 1,1-Dichloroethylene " Not exceed 1.2 "
5) cis-1,2-Dichloroethylene " Not exceed 150 "
6) trans-1,2-Dichloroethylene " Not exceed 210 "
7) Dichloromethane " Not exceed 210 "
8) Ethylbenzene " Not exceed 230 "
9) Styrene " Not exceed 1,700 "
10) Tetrachloroethylene " Not exceed 190 "
11) Toluene " Not exceed 520 "
12) Trichloroethylene " Not exceed 61 "
13) 1,1,1-Trichloroethane " Not exceed 1,400 "
14) 1,1,2-Trichloroethane " Not exceed 19 "
15) Total Xylenes " Not exceed 210 "
2. Heavy metals
1) Arsenic mg/kg
Not exceed 27 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Furnace Technique or Atomic Absorption, Gaseous Hydride or Atomic Absorption, Borohydride Reduction or other methods approved by PCD
2) Cadmium and compounds
" Not exceed 810 Inductively Coupled Plasma-Atomic
Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption,
Direct Aspiration or Atomic Absorption, Furnace Techniqueor other methods approved by PCD
3) Hexavalent Chromium " Not exceed 640 Coprecipitation or Colorimetric or Chelation/Extraction or other methods approved by PCD บ
4) Lead " Not exceed750 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Direct Aspiration or Atomic Absorption, Furnace Technique or other methods approved by PCD
5) Manganese and compounds " Not exceed 32,000 "
6) Mercury and compounds " Not exceed 610 Cold-Vapor Technique or other methods approved by PCD
7) Nickel, soluble salts " Not exceed 41,000 Inductively Coupled Plasma-Atomic Emission Spectrometry or Inductively Coupled Plasma-Mass Spectrometry or Atomic Absorption, Direct Aspiration or Atomic Absorption, Furnace Technique or other methods approved by PCD
8) Selenium " Not exceed 10,000 Inductively Coupled Plasma-Atomic Emission Spectrometry or Atomic Absorption, Furnace Technique or Atomic Absorption, Gaseous Hydride or Atomic Absorption, Borohydride Reduction or other methods approved by PCD
3.Pesticides
1) Atrazine
mg/kg
Not exceed 110
Gas Chromatography or other methods approved by PCD
2) Chlordane " Not exceed 110 Gas Chromatography/Mass Spectrometry (GC/MS) or other methods approved by PCD
3) 2,4-D " Not exceed 12,000 Gas Chromatography or High Performance Liquid Chromatography/Thermal Extraction/Gas Chromatography/Mass Spectrometry (TE/GC/MS) or other methods approved by PCD
4) DDT " Not exceed 120 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or other methods approved by PCD
5) Dieldrin " Not exceed 1.5 "
6) Heptachlor " Not exceed 5.5 "
7) Heptachlor Epoxide " Not exceed 2.7 "
8) Lindane " Not exceed 29 "
9) Pentachlorophenol " Not exceed 110 Gas Chromatography or Gas Chromatography/Mass Spectrometry (GC/MS) or Gas Chromatography/Fourier Transform Infrared (GC/FT-IR) Spectrometry or other methods approved by PCD
4. Others
1) Benzo (a) pyrene
mg/kg
Not exceed 2.9
Gas Chromatography/Mass Spectrometry (GC/MS) or Thermal Extraction/Gas Chromatography/Mass Spectrometry (TE/GC/MS) or Gas Chromatography/Fourier Transform Infrared (GC/FT-IR) Spectrometry or other methods approved by PCD
2) Cyanide and compounds " Not exceed 35 Total and Amenable Cyanide: Distillation or Total Amenable Cyanide (Automated Colorimetric, with off-line Distillation) or Cyanide Extraction Procedure for Solids and Oils or other methods approved by PCD
3) PCBs " Not exceed10 Gas Chromatography or other methods approved by PCD
4) Vinyl Chloride " Not exceed 8.3 Purge and Trap Gas Chromatography or Purge and Trap Gas Chromatography Mass Spectrometry or other methods approved by PCD


Remark

:
1 Test Methods of Evaluating Solid Waste, Physical/Chemical Methods (SW-846) (United States Environmental Protection Agency)
2 Soil Sampling and Preservation Methods must be as specfied

Soil Sample Preservation Method
Parameter Container Preservative Holding Time
1. Volatile Organic Compounds Glass Fridge   4° ±2 °C 14 Days
2) Heavy metals (Except Hexavalent Chromium and Mercury and compounds) Plastic/Glass " 180 Days
3) Hexavalent Chromium " "

- 30 Days before sample preparation
-4 Days after sample preparation

4) Mercury and compounds " " 28 Days
5) Pesticides Glass " - 14 Days before sample preparation
- 40 Days after sample preparation
6) Benzo (a) pyrene " " - 14 Days before sample preparation
- 40 Days after sample preparation
7) Cyanide and compounds Plastic/Glass " 14 Days before sample preparation
8) PCBs Glass " - 14 Days before sample preparation
- 40 Days after sample preparation
9) Vinyl Chloride " " 14 Days

Source : Notification of National Environmental Board No. 25, B.E. (2004) issued under the Enhancement and Conservation of National Environmental Quality Act B.E.2535 (1992) published in the Royal Government Gazette No. 121 Special Part 119 D dated October 20, B.E.2547(2004)