Washington Cleanup Standards for Hydrocarbon Contaminated Groundwater

 

Product

Parameter/ Constituent

Lab Test Protocol & Number

Detection Level (µg/L)

Notification Level

Cleanup Level
Gasoline Range Organics--GRO



 

 Benzene EPA 8021B or 8260B

1

*

5µg/L
Toluene EPA 8021B or 8260B

1

*

1000µg/L
Ethylbenzene EPA 8021B or 8260B

1

*

700µg/L
Xylenes EPA 8021B or 8260B

3

*

1000µg/L
GRO without benzene NWTPH-Gx

250

*

1000µg/L
GRO with benzene NWTPH-Gx

250

*

800 µg/L
Diesel Range Organics--DRO DRO NWTPH-Dx

250

*

500µg/L
Heavy oil NWTPH-Dx

500

*

500µg/L
Electrical insulating mineral oil (non-PCB) NWTPH-Dx

500

*

500 µg/L
Other (depending on source and age of product) Naphthalenes EPA 8270

1

*

160 µg/L
MTBE EPA 8260B

1

*

20 µg/L
Total Lead EPA 6010, 7420, or  7421

0.2

*

15µg/L
Total Metals EPA 6000 and 7000 series

**

*

metal specific
PCBs EPA 8082

0.1

*

0.1µg/L
Volatile Organics EPA 8021,8260B

**

*

analyte specific
PAHs (carcinogenic) EPA 8100, 8270, or 8310

0.02

*

0.1µg/L***

*Not specified by contaminant.  See WAC 173-340-300 for release reporting requirements (available on the web site).

** Test Specific.

***  Based on benzo(a)pyrene

These are Method A cleanup levels for Ground Water.  This table has been developed for specific purposes.  It is intended to provide conservative cleanup levels for drinking water beneficial uses at sites undergoing routine cleanup actions or those sites with relatively few hazardous substances.  This table may not be appropriate for defining cleanup levels at other sites.  Site specific cleanup levels can be calculated for Method B (unrestricted uses) and Method C (restricted uses) including GRO and DRO using a surrogate/fraction approach.   All pathways must be evaluated for Methods B and C including ingestion, vapor, and impact to surface water.  Free product is not permitted.  The user should check the applicable entries and footnotes in the Method A Tables and the Required Testing for Petroleum Releases Table as well as other pertinent sections in WAC 173-340.  NWTPH, hydrocarbon identification (HCID), and surrogate/fraction analytical methods are available in Ecology Publication # ECY 97-602 (available on the web site).  It is important to note that the uses of Methods B and C do not account for some applicable state and federal legal considerations.  These methods also do not account for several health and ecological considerations regarding groundwater, soils and air. 

Contact: Craig McCormack, Washington Department of Ecology, 360-407-7193

E-mail: cmcc461@ecy.wa.gov

Web Site: www.ecy.wa.gov/programs/tcp/cleanup.html



Top

Design and hosting by Web Studio Designs & Pioneer Host Internet Solutions
 
Copyright © 2000 The Association for the Environmental Health of Soils
150 Fearing Street · Amherst, MA 01002
Phone: 413.549.5170
Fax: 413.549.0579
E-mail: info@aehs.com