From: "Wearmouth, Ann" <ann.wearmouth@mirant.com> 

 

 To: Josh Hall/DC/USEPA/US@EPA 

 Cc: "D'Alesandro, Ray" <Raymond.DAlesandro@mirant.com> 

 Date: 03/02/2010 02:07 PM 

 Subject: RE: EPA site visit to Dickerson 

Hi Josh, Here's the documentation you asked for. There are 2 npdes 

fact sheets - we had amended our npdes application to include the 

scrubber WWTP outfall. You'll also see two mass balance diagrams based 

on limestone quality. I'm missing a plant water balance. I'll get that 

for you. 

We're expecting you at 11 on the 9th. Lunches will be provided at an 

exorbitant rate I'm told ;) The guards will have the list you give us 

and will direct you to the main office, but I should be there to take 

you on in. Mickey Lynn is the site contact if I'm running late. The 

address you have is correct. It's pretty much a straight shot up Rt 28 

from 270. Or take River Rd to 28 depending on where you start. There's a 

stop light at Martinsburg Rd and Rt 28 that you can't miss. You take 

that straight back to the site entrance which is shared with Montgomery 

County's Waste Incinerator. That should do it. Let me know if you need 

anything else. By copy to Ray, if one of these documents has changed 

significantly, please provide the new one. Thanks -a 

-----Original Message----- 

From: Hall.Josh@epamail.epa.gov [mailto:Hall.Josh@epamail.epa.gov] 

Sent: Thursday, February 25, 2010 1:36 PM 

To: Wearmouth, Ann 

Cc: Jordan.Ronald@epamail.epa.gov; Alicea.Jezebele@epamail.epa.gov; 

Thomas.Finseth@erg.com 

Subject: EPA site visit to Dickerson 

Ann, 

Thanks for helping coordinate a site visit to Mirant's Dickerson Plant 

on March 9. As I indicated we are available anytime on the 9th, so let 

me know if folks at the plant have a preference of morning or afternoon. 

I would expect that we'd be on site between 3-4 hours. 

Our focus of the site visit will be the FGD wastewater treatment system 

and potential sampling points in that system. So that we are prepared 

ahead of time could you please send any FGD flow diagrams, FGD 

wastewater treatment engineering/design reports, plant water balance, 

and NPDES fact sheets. We'll review this material before hand in order 

to make sure we're up to speed once we arrive on site. 

Here's a suggested schedule for visit: 

 Check-in, Safety Briefing, Introduction to Plant and FGD wastewater 

 treatment (WWT) system. 

 Tour of FGD WWT Facility (focus on FGD WWT, potential sample points, 

 staging areas, etc) 

 Debrief from tour, Q & A, etc. 

We'll provide our own PPE (hard hats, safety glasses, hearing 

protection, steel toed boots). 

On the tour we plan to take photos of the treatment system particularly 

potential sample points. We'll burn a CD of the photos for the plant, 

so they can let us know if there are any photos are sensitive, 
proprietary or confidential. The purpose of the photos is to help us 

remember what we saw as well as plan for supplies if we decide to sample 

one of these plants. 

As far as address to the plant, I have: 

21200 MARTINSBURG ROAD 

DICKERSON, MD 20842 

Are there any particular instructions that would be helpful, when we 

arrive at the plant (which gate should we go to, will there be issues if 

we put the above address into a GPS, etc) 

Once we get to the plant, who should we contact, and could we have their 

phone number? 

I will let you know who will be attending next week once I have a better 

sense on my end, but we'll likely have 6-7 people. 

I hope I've remembered everything, but if you think of anything else 

please let me know. 

Thanks again for coordinating this, 

Josh Hall 

U. S. Environmental Protection Agency 

OW/Office of Science & Technology 

Engineering & Analysis Division 

Ph: (202) 566-1002 

Fax: (202)566-1053 

hall.josh@epa.gov 

http://www.epa.gov/waterscience/ 

(See attached file: Semeins System Description.doc)(See attached file: 

Dickerson npdes fact sheet scrubber.PDF)(See attached file: dickerson 

npdes fact sheet 2008.PDF)(See attached file: Dickerson mass balance 

scrubber.pdf)