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Regulations, Current, Last revision on March 29 2006
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Regulations Governing the Preliminary Assessment of Soil and Groundwater Pollution Control Sites

Promulgated by Environmental Protection Administration order Huan-Shu-Tu-Tzu No.0920031925 on May 7, 2003
Promulgated by Environmental Protection Administration order Huan-Shu-Tu-Tzu No.0950023629 on March 29, 2006
Article 1 [繁體中文]

These Regulations are determined pursuant to Article 21, Paragraph 3 of the Soil and Groundwater Pollution Remediation Act (herein referred to as this Act).

Article 2 [繁體中文]

Those control sites which fulfill one of the following circumstances after preliminary assessment shall be reported to the central competent by the local competent authority and officially announced as remediation site following central competent authority approval.

  1. Control sites for which the concentration of a single pollutant exceeds soil or groundwater pollution control standards by more than 20 times.

  2. Control sites for which the calculation of the pollution total score P based on the soil pollution grade (Ts) and the groundwater pollution grade (Tgw) reaches more than 20 points.

  3. Control sites that are located in drinking water source protection areas, within a certain distance from drinking water intake points, or in the water catchment area of a dam or reservoir.

  4. Control sites that are located in a national park, wildlife protection area, sensitive ecology or nature preserve, or the habitat of endangered species or plant life.

  5. Control sites that are located in a special scenic area or a forest recreation area.

  6. Control sites that are located on a school campus, in a public park, green belt, or children’s recreational area.

  7. Other major incidents of pollution as designated and officially announced by the central competent authority

The assessment table for the preliminary assessment in Paragraph 1 is shown in Appendix 1.

Article 3 [繁體中文]

The soil pollution grade (Ts) in these Regulations shall be the sum (∑Tsi) of the soil pollution control standard multiples reached by soil pollutant concentrations. Its calculation formula shall be as follows:

T s T s i C 1 S 1 C 2 S 2 C n S n [Formula description]

Ci: i category pollutant concentrations that reach soil pollution control standards, i=1, 2…n

Si: i category soil pollutant control standards, i=1, 2…n

The calculation formula for the foregoing paragraph is shown in Appendix 2.

Article 4 [繁體中文]

The groundwater pollution grade (Tgw) in these Regulations shall be the sum (∑Tgwi) of the groundwater pollution control standard multiples reached by groundwater pollutant concentrations. Its calculation formula shall be as follows:

T gw T gw i C 1 S 1 C 2 S 2 C n S n [Formula description]

Ci: i category pollutant concentrations that reach groundwater pollution control standards, i=1, 2…n

Si: i category groundwater pollutant control standards, i=1, 2…n

The calculation formula in the foregoing paragraph follows Appendix 3.

Article 5 [繁體中文]

The calculation formula for the pollution total score P shall be as follows:

P T s 2 T gw 2 2 [Formula description]
Article 6 [繁體中文]

The local authority for a control site pursuant to Article 2, Paragraph 1, shall inform the perpetrators of pollution at the control site, all land users, land managers, and landowners of their obligation to apply for a health risk assessment.

Persons that receive notice of the health risk assessment shall apply for a health risk assessment with the local competent authority within two weeks of receiving notification, and within four months of approval, shall submit a health assessment report for review.The local competent authority shall complete the review within three months of collecting and processing the reports and send the review conclusions to the central competent authority to keep on record.

Control sites where one of the following circumstances apply are not subject to the foregoing paragraph:

  1. Control sites pursuant to Article 2, Paragraph 1, Subparagraph 1, whose total concentration of phenol, nitrate nitrogen, or nitrite nitrogen exceeds soil or groundwater pollution control standards by more than 20 times

  2. Control sites subject to Article 2, Paragraph 1, Subparagraph 4 or Article 2, Paragraph 1, Subparagraph 7

The central competent authority shall determine the hazard appraisal, dosage reaction assessment, exposure volume assessment, and description of risk characteristics included in the health risk assessment.

In order to review health risk assessments, the local competent authority shall establish a health risk assessment review committee and invite relevant agencies, representatives, experts, and scholars to form the committee; the number of experts and scholars shall not be less than half of the total number of committee members.

Article 7 [繁體中文]

The local competent authority shall not submit a request to the central competent authority to officially announce the site as a remediation site if, upon completion of the review of the health risk assessment, the cancer risk is found to be less than 1% and other non-cancer risks are also less than 1%.However, the site in question shall be handled according to relevant control site regulations pursuant to this Act.

Article 8 [繁體中文]

These Regulations shall take effect on the date of promulgation.

[TOC][繁體中文]

Appendix 1 Control Site Preliminary Assessment Table

Assessment of control site pollution conditions Yes No

1. Control sites that are located in drinking water source protection areas, within a certain distance from drinking water intake points, or in the water catchment area of a dam or reservoir.

2. Control sites that are located in a national park, wildlife protection area, sensitive ecology or nature preserve, or the habitat of endangered species or plant life.

3. Control sites that are located in a special scenic area or a forest recreation area.

4. Control sites that are located on a school campus, in a public park, green belt, or children’s recreational area.

5. Other major incidents of pollution as designated and officially announced by the central competent authority

6. The concentration of a single pollutant at the control site exceeds soil or groundwater pollution control standards by more than 20 times. If Yes has been checked, please list the name of the pollutants and their multiples.

Soil Groundwater
Pollutant name Multiple Pollutant name Multiple

7. Calculate the pollution total score P according to the following formula. Does P reach more than 20 points?

Calculate the soil pollution grade (Ts) according to Appendix 2. = (when soil pollutant concentration has not reached control standards, then Ts is to be calculated as 0 points)

Calculate the groundwater pollution grade (Tgw) according to Appendix 3. = (when groundwater pollutant concentration has not reached control standards, then Tgwis to be calculated as 0 points)

P T s 2 T gw 2 2 [Formula description]

Assessment Results

  1. If for any of the above assessment items the Yes box has been checked, the remediation site box must be checked for this site.
  2. If for all of the above assessment items the No box has been checked, the control site box must be checked for this site.

Assessing organization:

Assessed by:

Approving organization:

Approved by:

Note: Ts, Tgw and P in this table must be rounded to the first digit to the right of the decimal point.
[TOC][繁體中文]

Appendix 2 Soil Pollution Grading Table

Pollutant items
Soil pollution control standards
Si (mg/kg)
Soil pollutant concentrations that reach control standards
Ci (mg/kg)
Multiples that reach control standards
T s i C i S i [Formula description]
Heavy metals As (Arsenic) 60
Cd (Cadmium) 20 (5 for farmland)
CR (Chromium) 250
Cu (Copper) 400 (200 for farmland)
Hg (Mercury) 20 (5 for farmland)
Ni (Nickel) 200
Pb (Lead) 2000 (500 for farmland)
Zn (Zinc) 2000 (600 for farmland)
Organic compounds Benzene 5
Carbon tetrachloride 5
Chloroform 100
1,2-Dichloroethane 8
(cis-1.2-Dichloroethylene) 7
(trans-1,2-Dichloroethylene) 50
1,2-Dichloropropane 0.5
1,2-Dichlorobenzene 100
1.3-Dichlorobenzene 100
3,3’-Dichlorobenzidine 2
Ethylbenzene 250
Hexachlorobenzene 500
Pentachlorophenol 200
Tetrachloroethylene 10

Appendix 2 Soil Pollution Grading Table (continued)

Pollutant items
Soil pollution control standards
Si (mg/kg)
Soil pollutant concentrations that reach control standards
Ci (mg/kg)
Multiples that reach control standards
T s i C i S i [Formula description]
The soil pollution grade (Ts) is equivalent to the sum of the above listed multiples that reach control standards Ts=
Organic compounds Toluene 500
TPH (Total Petroleum Hydrocarbons) 1000
Trichloroethylene 60
2,4,5-Trichlorophenol 350
2,4,5-Trichlorophenol 40
Vinyl chloride 10
Xylenes 500
Agricultural chemicals Aldrin 0.04
Chlordane 0.5
4,4’-Dichlorodiphenyl-trichloroethane 3
Dieldrin 0.04
Endrin 20
Heptachlor 0.2
Toxaphene 0.6
Endosulfan 60
Other organic compounds Dioxins 1000 (ng-TEQ/kg)
Polychlorinated biphenyls 0.09
Note: Tsi and Ts in this table must be rounded to the first digit to the right of the decimal point.
[TOC][繁體中文]

Appendix 3 Groundwater Pollution Grading Table

Pollutant items
Second Category Groundwater Pollution Control Standards
Si (mg/L)
Groundwater pollutant concentrations that reach control standards
Ci (mg/L)
Multiples that reach control standards
T gw i C i S i [Formula description]
Heavy metals Arsenic (As) 0.50
Cadmium (Cd) 0.050
Chromium (CR) 0.50
Copper (Cu) 10
Lead (Pb) 0.50
Mercury (Hg) 0.020
Lindane (Ni) 10
Zinc (Zn) 50
Monocyclic aromatic hydrocarbons Benzene 0.050
Toluene 10
Polycyclic aromatic hydrocarbons Naphthalene 0.40
Chlorinated hydrocarbons Carbon tetrachloride 0.050
Chlorobenzene 1.0
Chloroform 1.0
Chloromethane 0.30
1.4-Dichlorobenzene 0.750
1.1-Dichloroethane 8.50
1,2-Dichloroethane 0.050

Appendix 3 Groundwater Pollution Grading Table (continued)

Pollutant items
Second Category Groundwater Pollution Control Standards
Si (mg/L)
Groundwater pollutant concentrations that reach control standards
Ci (mg/L)
Multiples that reach control standards
T gw i C i S i [Formula description]
The groundwater pollution grade (Tgw) is equivalent to the sum of the above listed multiples that reach control standards Tgw=
Chlorinated hydrocarbons 1.1-Dichloroethylene 0.070
(cis-1.2-Dichloroethylene) 0.70
(trans-1,2-Dichloroethylene) 1.0
Phenols 0.140
Tetrachloroethylene 0.050
Trichloroethylene 0.050
Vinyl chloride 0.020
Agricultural chemicals 2,4-D 0.70
Carbofuran 0.40
Chlordane 0.020
Diazinon 0.050
Methamidophos 0.20
Paraquat 0.30
Parathion 0.220
Toxaphene 0.030
General items Nitrate as N 100
Nitrite nitrogen (Nitrite as N) 10
Note: Tgwi and Tgw in this table must be rounded to the first digit to the right of the decimal point.