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Hi Walt-

"David Krask" <dkrask@mde.state.md.us> 

Walter Wilkie/R3/USEPNUS@EPA 

Andrew Hass/R3/USEPNUS@EPA, <Hyden.Lorett@epamail.epa.gov>, Cathleen Kennedy/R3/USEPNUS@ 

08/14/2008 12:46 PM 

MDE PM-2.5/PM-10 site closure notice-FMC/Fairfield 

This email serves as formal notification that MDE will be shutting down 

the FMC-Fairfield PM-2.5 and PM-10 monitoring site (AIRS code 24510035) 

effective August 18, 2009. The reason for the shutdown is the closure 

and demolition of the FMC fertilizer manufacturing plant where the site 

is location. Demolition is scheduled for September 2008 and MDE has 

been asked to have our equipment removed next week. 

MDE currently does not plan to find a new site to replace the FMCFairfield site. We believe our remaining PM-2.5 network si adequate to 

characterize PM-2.5 concentrations in the Baltimore MSA. Please see the 

attached documentation supporting this decision (the accompanying 

powerpoint will have to be sent as a separate email or posted to an ftp 

site because it is too large for this email). Since the FMC site was 

used to meet collocation requirements for both PM-2.5 and PM-10, MDE 

plans to use Padonia as the new PM-2.5 collocated site and Glen Burnie 

and the new collocated PM-10 site. 

I am not sure how this network change should be incorporated into MDE's 

Annual Network Plan. Should an amendment to the plan be submitted, and 

if so, how does this process work? Does this information have to 

transmitted by the MD Secretary of the Environment? 

Please contact me at your convenience so we can discuss this matter 

further. 

Best Regards, 

Dave 

David J. Krask 

Maryland Department of the Environment 

ARMA/Air Monitoring Program 

1800 Washington Blvd. 

Baltimore, Md. 21230-1720 

Phone: 410.537.3756 

Fax: 410.537.4243 

Email: dkrask@mde.state.md.us 

The information contained in this communication may be confidential, is 

intended only for the use of the recipient named above, and may be 

legally privileged. 

If the reader of this message is not the intended recipient, you are 

hereby notified that any dissemination, distribution, or copying of 

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copy of it from your computer system. Thank you. 

««GWIASIG 0.07»» 
Closure of the FMC - Fairfield Ambient Air Monitoring Site 

1. AQS ID: 

2. Location: 

245100035 

FMC Corporation 

1701 E Patapsco Ave. 

Baltimore City, Maryland 21226 

3. Metro Statistical Area (MSA): Baltimore - Towson 

4. Reason for Closure: The FMC Agricultural Products Facility is being shut down and 

the site is being demolished. Demolition is scheduled to start in early September 2008 

5. Parameters Monitored: 

PMlO - Start date: January 1984, co-located monitors. 

PM2.5 - Start date: January 1999, co-located monitors 

6. Proposed Plan and Additional Information: 

The Maryland Department of the Environment (MDE) plans to shutdown the FMCFairfield ambient air monitoring site during the week of August 18,2008 for the 

following reasons: 

• The present location is being demolished. 

• The present location was originally sited to be representative of a neighborhood 

and its monitoring objective was intended to be population exposure. Both these 

items are no longer true of the present location. The population density of the 

area immediately surrounding the present site has declined over the years and 

according to the 2000 census data contains 0.4 - 2,000 persons per square mile. 

See attachment A, FMC- Fairfield Closure Analysis. 

• There are three PM2.5 monitoring sites within 10 km's of the present location and 

an additional three PM2.5 monitoring sites located within 20 km's of the present 

location. With six PM2.5 monitoring sites within 20 km's of the present site, 

regional PM2.5 will adequately be monitored. See attachment A, FMC - Fairfield 

Closure Analysis. 

• The preliminary annual PM2.5 design value for the FMC - Fairfield monitoring 

site is not the maximum design value in the Baltimore Nonattainment Area 

(BNAA). The preliminary annual design value for the FMC-Fairfield site is 15.1 

Ilg/m3 and the leading BNAA annual PM2.5 design value is 15.6 Ilg/m3 at the 

Southeast Police Station. See attachment A, FMC- Fairfield Closure Analysis. 

• The preliminary 24-hour PM2.5 design value for the FMC - Fairfield monitoring 

site is not the maximum design value. The preliminary 24-hour design value for 

the FMC-Fairfield site is 36 Ilg/m3 and the leading 24-hour PM2.5 design value is 

37 Ilg/m3 at the Southeast Police Station. See attachment A, FMC- Fairfield 

Closure Analysis. 

1-2 
Closure of the FMC - Fairfield Ambient Air Monitoring Site 

• The PM2.5 (FRM) monitor will be relocated within the Baltimore NAA to the 

Padonia (240051007) air monitoring site, where there's already a PM2.5 (FRM) 

monitor. Padonia will now have co-located PM2.5 (FRM) monitors. This ensures 

that the necessary number of co-located PM2.5 (FRM) monitors will be in the 

BNAA. 

• The PMlO (filter based) monitor will be relocated to the Glen Burnie (240031003) 

air monitoring site, where there's already a PMlO monitor. Glen Burnie will now 

have co-located PMlO (filter based) monitors and thus maintain the necessary 

number of co-located PMlO monitors in Baltimore MSA in Maryland. 

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