NC0044725_Effluent Toxicity_20080623

R
3
3
CERTIFIED MAILr'RECEIPT
(Domestic Mail Only; No Insurance Coverage Provided)
Postage
Certified Fee
Return Receipt Fee
(Endorsement Required)
Restricted Delivery Fee
(Endorsement RequiradL
Postmark
• Here
Total Postage 8 PPaul Davis, Executive Director L
Sent To MAC
Street, Apt. No.; 16701 Airport Road
or PO Box No. Maxton, NC 28364
City, State, Z!P+4

;edified Mail Provide:
■ A mailing receipt
■ A unique identifier for your mailpiece
■ A signature upon delivery
■ A record of delivery kept by the Postal Service for two years
mportant Reminders:
■ Certified Mail may ONLY be combined with First -Class Mail or Priority Mail.
■ Certified Mail is not available for any class of international mail.
• NO INSURANCE COVERAGE IS PROVIDED with Certified Mail. Fa
valuables, please consider Insured or Registered Mail.
• For an additional fee, a Return Receipt may be requested to provide proof c
delivery. To obtain Return Receipt service, please complete and attach a Retun
Receipt (PS Form 3811) to the article and add applicable postage to cover thi
fee. Endorse mailpiece 'Return Receipt Requested". To receive a fee waiver fc
a duplicate return receipt, a USPS postmark on your Certified Mail receipt
required.
e For an additional fee, delivery may be restricted to the addressee o
addressee's authorized agent. Advise the clerk or mark the mailpiece with thi
endorsement "Restricted Delivery".
e If a postmark on the Certified Mail receipt is desired, please present the arti
cle at the post office for postmarking. If a postmark on the Certified Ma
receipt is not needed, detach and affix label with postage and mail.
NIPORTANT: Save this receipt and present it when making an inquiry.
'S Form 3800, January 2001 (Reverse) 102595-01-M-104

ENDER: COMPLETE THIS SECTION
• Complete items 1, 2,.and 3.-Also
item 4 if Restricted Delivery is desired:
• Print your name and address an the reverse '
so that we can return the card to you.
• Attach this card to the back of the mailpiece,
or on the front if space permits.
1. Article Addressed to:
Paul Davis, Executive Director
LMAC
16701 Airport Road
Maxton, NC 28364
COMPLETE THIS SECTION ON DELIVERY
Ir?-printe
CI Agent
o Addresse
6. D e 'Of De
D. Is delivery address different from 1 0 Ye
'If YES, enter delivery address belo El No
er
3. Service Type
El Certified Mail
0 Registered
El Insured Mail
CI Express Mail
0 Return Receipt for Merchandise
0 C.O.D.
4. Restricted Delivery? (Extra Fee)
El Yes
2. Article Number,
t
ki t? Doi Fi5 DO 0 00 0i '6_16 8 1 812 -
(Transfer —rnieervice!I.,...01 A t . t , .•
0
PRl :1111.1 I ' . DrimpAtin Return Perint
n9ROS.1"19-M-1

UNITED STATES POSTAL SERVICE_
C :1.z� �:;aTA
, AP. C:s��'`Y�..'a,..°LINA Al
:N( .28.'
u.W
r ..; 11. ?xZ4 �'�i. Iito
ii+N +l
Rr
First;lass'IVlati
iosta9e `Fels i�ai'
I Ildr^^aTttl„u yal
"P. prti1t`iiib':*ij!i} ..,..w_
�satr'.m
• Sender: Please print your name, address, and ZIP 4-in"triis box • R`"'
NORTH CAROLINA DEPARTMENT OF
fis (ENVIRONMENTAND NATURAL RESOURCES I
mt v.,
n ��.� . �p 25 GREEN STREET —SUITE 714
`� 'x' a4. FAYETTEVILLE, NC 28301-5043
5(J
auuu+ai'� t
3
7

Micnaei r. i.asiey, vovernor
1, W illia%G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins., Director
'Division of Water Quality
June 23, 2008
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
7001 2510 0000 6681 5826
Paul Davis
Executive Director
Laurinburg-Maxton Airport Commission (LMAC)
16701 Airport Road
Maxton, NC 28364
Subject: Reply to LMAC's May 30, 2008 letter
Laurinburg-Maxton Airport Commission (LMAC)
NPDES Permit No. NC00044725
Scotland County
Dear Mr. Davis:
On June 10th, this office received the May 30, 2008 letter from. JoAnn Gentry
concerning the status of LMAC's Plan -of -Action for resolving the Whole Effluent Toxicity
(WET) failures. ' This Office understands that LMAC. will request a "quant scan" during the
next aquatic toxicity sampling event, and that if the "quant scan" does not indicate the cause
of the Whole Effluent Toxicity failures, then LMAC will probably enter into a formal
agreement with David Merritt for him to assist LMAC in solving for the aquatic toxicity.
Please keep in mind that it is important for the process of the toxicant(s) identification
that the "failure" be present during the same time period as the Toxicity Identification
Evaluation. We are aware that since December 2007, the toxicant(s) is manifesting itself as a
consistent series of "failures". If the toxicant(s) diminishes to a level that results in a "Pass"
before the toxicant(s) is identified (and thereby not purposely targeted for reduction), .the
toxicant(s) may remain as an unknown, and would possibly reoccur. It is recommended that
a fractionization type aquatic toxicity test be used to determine the group or type of toxicant.
Identification of the primary (and possibly secondary) cause of the WET "failures" is a
complex problem; and, this Office again highly recommends that LMAC hire an aquatic
toxicity consultant.
One
NorthCarolina
Kati/rally
North Carolina Division of Water Quality 225 Green Street — Suite 714 Fayetteville, NC 28301-5043 Phone [phone] , Customer Service
Internet: h2o.enr.state.nc.us FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Paul Davis
June 23, 2008
Page 2
Thank you for your update letter. If you have any questions or comments, please feel
free to contact Dale Lopez or me at [phone].
Sincerely,
-6,1440
Belinda S. Henson
Surface Water Protection Section
BSH:DL/dl
cc: Dana Folley, PERCS Unit
Cindy Moore, ESB Aquatic Toxicity Unit
FRO Files