UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION 2
 

290 BROADWAY
 

NEWYORK, NY 10007-1866
 

JUN 1 4 2011 

The Honorable John P. deJongh, Jr. 

Office of the Governor 

Government House, 

21-22 Kongens Gade 

Charlotte Amalie 

St. Thomas, VI 00802 

Dear Governor deJongh: 

Thank you for your November 10,2009 recommendations on air quality designations for the revised 

National Ambient Air Quality Standards for lead throughout the US Virgin Islands. This letter is to 

notify you of the U.S. Environmental Protection Agency's (EPA's) preliminary decision to designate all 

of US Virgin Islands as unclassifiable/attainment, and to inform you of our approach for completing the 

designations for the revised lead standards. Reducing levels of lead pollution is an important part of the 

EPA's commitment to a clean, healthy environment. Lead exposure can cause a range of adverse health 

effects, most notably in children. Exposures to low levels of lead early in life have been linked to effects 

on IQ, learning, memory, and behavior. 

On October 15,2008, the EPA substantially strengthened the health-based or "primary" National 

Ambient Air Quality Standard by lowering it from 1.5 micrograms per cubic meter (J.!g/m3

) - a level set 

in 1978 - to a level of 0.15 J.!g/m3

. This stronger standard provides increased protection against adverse 

health effects associated with exposure to lead in at-risk groups, including children. To provide 

increased protection against lead-related environmental and other welfare effects, the EPA revised the 

secondary National Ambient Air Quality Standard to be identical in all respects to the revised primary 

standard. The EPA also determined that the pre-existing ambient lead monitoring network was 

inadequate for determining whether many areas are meeting the revised lead standards and established 

new criteria for siting ambient lead monitors and new data collection requirements. Monitors meeting 

the new network siting requirements were to begin operation January 1,2010. 

Within two years of promulgating new or revised National Ambient Air Quality Standards, the Clean 

Air Act requires the EPA to complete the initial process of identifying or designating areas that meet or 

do not meet an air quality standard. If the Administrator has insufficient information to make these 

designations, the EPA has the authority to extend the designation process by up to one year. In light of 

the new monitoring network, the EPA is completing the lead designations in two rounds. In the first 

round, published on November 16, 2010, the EPA designated as "nonattainment" 16 areas as violating 

the 2008 Lead National Ambient Air Quality Standards based on data from the pre-201O monitoring 

network. For all other areas, the EPA extended the deadline for designations by up to one year so that 

data from the newly deployed monitors can be considered in making appropriate designation decisions. 

States were given an opportunity to update their recommendation letters for those remaining areas for 

our consideration in the second round of designations by December 15,2910. The EPA intends to 

Internet Address (URL). htlp:llwww.epa.gov
 

Recycled/Recyclable. Printed with V.g.U1ble 011 Sesed Inks on Recycled Paper (Minimum SO".Postconsumer content)
 
complete the second round of lead designations by no later than October 14, 2011. Therefore, this letter 

is the next step in the process for completing lead designations by October 14,2011. 

Consistent with the Clean Air Act, and after carefully considering US Virgin Islands' November 10, 

2009 recommendation letter and all the associated technical information for the 2008 Lead National 

Ambient Air Quality Standards, including the most recent air quality data from 2008-2010, the EPA is 

proposing to designate US Virgin Islands as unclassifiable/attainment. The EPA uses this designation for 

initial designations to identify areas that have data indicating attainment, or where there is no evidence 

of a violation. 

If US Virgin Islands has additional information that the EPA should consider with respect to our 

proposed modification to your designation recommendation, please submit it to us by August 15,2011. 

The EPA's preliminary designation decisions and supporting documentation will be made available to 

the general public for review. We will be accepting comments through August 15,2011. We will review 

any information we receive from the US Virgin Islands and the general public by this date, and we plan 

to promulgate the second round of final designations by October 14, 2011. 

We look forward to a continued dialogue with you and your staff as we work together to implement the 

2008 Lead National Ambient Air Quality Standards. Should you have any questions, please do not 

hesitate to call me, or have your staff contact Raymond Werner of my staff at 212-637-3706. 

Sincerely, 

J.\~~

Judith A. Enck 

Regional 
 Administrator 

cc:	 Alicia V. Barnes, Commissioner 

Virgin Islands Department of Planning & Natural Resources 

8100 Lindberg Bay, STE. #61 

Cyril E. King Airport, Terminal Bldg., Second Floor 

St. Thomas, Virgin Islands 00802 

Gina McCarthy, Assistant Administrator for Air and Radiation
 

Steven D. Page, Director, Office of Air Quality Planning and Standards