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Home My WebLink AboutNC0044725_Effluent Toxicity_200812120 J r 3 3 3 3 3 3 7 1. . 'os a erviceTM CERTIFIED MAILTM RECEIPT (Domestic Mail Only; No Insurance°Coverage Provided) For delivery information visit our website at www.usps.como Postage Certified Fee Retum Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) Total Postage Paul Davis, Executive Director Sent To Postmark Here LMAC or POBoxNo. 16701 Airport Rd City, State,ZIP-I Maxton, NC 28364 :edified Mail Provides: A mailing receipt _ . r A unique identifier for your mailpiece I A record of delivery kept by the Postal Service for two years rnportant Reminders: a Certified Mail may ONLY be combined with First -Class Mail® or Priority Mail i Certified Mail Is notavailabie for any class of intemational mail. a NO INSURANCE COVERAGE IS PROVIDED with Certified Mail. Fc valuables, please consider Insured or Registered Mail. For an additional fee, a Retum Receipt may be requested to provide proof o delivery. To obtain Retum Receipt service, please complete and attach a Retun Receipt (PS Form 3811) to the article and add applicable postage to cover th, fee. Endorse mailpiece "Retum Receipt Requested". To receive a fee waiver fo a duplicate return receipt, a USPS® postmark on your Certified Mail receipt i required. o For an additional fee, delivery may be restricted to the addressee c addressee's authorized agent. Advise the clerk or mark the mailpiece with th endorsement "Restricted-DDelivery". • If a postmark on the Certified Mail receipt is desired, please present the art 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. ENPORTANT: Save this receipt and present it when making an inquiry. 'S Form 3800, August 2006 (Reverse) PSN 7530-02-000-9047 ENDER: COMPLETE THIS SECTION • Complete items 1, 2, and 3. Also complete item 4 if Restricted Delivery is desired. • Print your name and address on 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 Rd Maxton, NC 28364 COMPLETE THIS SECTION ON DELIVERY A. Signature B. Received by (Printed Name) ❑ Agent ❑ Addresse C. D to of D Iivei D. Is delivery address different from item 1? If YES, enter delivery address below: 0 No 0 Yes 3. Service Type ❑ Certified Mall ❑ Registered ❑ Insured Mail ❑ Express Mail ❑ Retum Receipt for Merchandis ❑ C.O.D. 4. Restricted Delivery? (Extra Fee) ❑ Yes ?. Article Nu'mb'er i i t (Transfer from service'Iabe0 t 1 1 7 Cl8 1,3o.t i amilHi492 y7464 e t i 'S; Form 3811, February 2004 , , , , .. , Domestic,Return Receipt 102595-02-M-15, UNITED STATES POSTAL SERVICE elSff ae ta•F,,ee 'Paid, ti :.mR.., - ,.,.. • Sender: Please print your name, address, and ±iP'+`4''in`tfi'is jil � oa co T.L'"�ry41,) NORTH CAROLINA DEPARTMENT OF b"*v"c_',i.. ENVIRONMENT AND NATURAL RESOURCES 225 GREEN STREET —SUIT 714 ` FAYETTEVILLE, NC 28301-5043 Pat_ tot 7-- 0 ill lI'1iilitii111iiiill!lifi1111 1 ldlil41ii Tii IVIIGIIAGI r. L'HSIGy, vovernor William G. Ross Jr., Secretary North Carolina Department o,`EnviroIarment and Natural Resources Coleen H. Sullins., Director Division of Water Quality November 12, 2008 CERTIFIED MAIL RETURN RECEIPT REQUESTED 7008 1300 0001 1492 1746 Paul Davis Executive Director Laurinburg-Maxton Airport Commission (LMAC) 16701 Airport Road Maxton, NC 28364 Subject: Reply to LMAC's November 4, 2008 Correspondence Laurinburg-Maxton Airport Commission (LMAC) NPDES Permit No. NC00044725 Scotland County Dear Mr. Davis: On November 4, 2008, this Office received part of the,Meritech, Inc. October 28, 2008 Toxicity Evaluation Report from JoAnn Gentry concerning the status of the LMAC Whole Effluent Toxicity Investigation and the Proposed Action Plan for resolving the Whole Effluent Toxicity (WET) failures. After a review of the Toxicity Evaluation Report that was sent, this Office understands that 1) it appears that organic contaminants as found in the LMAC collection system do not play a. significant role in the effluent toxicity, 2) elevated concentrations of metal contaminants appear to be the main reason for LMAC effluent toxicity, 3) High sulfate levels from the Umicore sampling site are also a possible source of toxicity in the LMAC effluent, 4) Umicore, Railroad Friction, and Scotland Manufacturing samples showed high toxicity and will be subject to additional testing, 5) LMAC WWTP effluent, South Manhole, and North Manhole also showed significant toxicity and will continue to be tested, 6) House of Raeford and Butler Manufacturing did not show toxicity, and these two sites will no longer be tested in the investigation, 7) the toxicity .influence of sulfate and silica are being investigated. After reviewing the above mentioned report, it is also the understanding of this Office that the Proposed Action Plan is 1) to continue isolation of high toxicity factors, 2) to investigate the role that high sulfate levels may contribute to toxicity, 3) to investigate the role that silica may contribute to toxicity (mostly coming from Railroad Friction and Scotland Manufacturing), 4) to divide into smaller sections, the Northern segment of the collection system and the Railroad Friction/Scotland Manufacturing section of the collection system, and to isolate the sources of maximum toxicity. As stated in the report: "The picture which emerges at this time is that metals are the key toxicity factor, primarily those discharged from Umicore and RR & Scotland sites."... "Although it appears that Umicore and Railroad Friction may be the main contributor to the toxicity problem, we propose to monitor other elements in that part of the system to eliminate them as possible sources of toxicity." North Carolina Division of Water Quality Internet: h2o.enr.state.nc.us NorthCarolina rNaiira/1y 225 Green Street — Suite 714 Fayetteville, NC 28301-5043 Phone (910) 433-3300 Customer Service FAX (910) 486-0707 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper Mr. Davis November 12, 2008 Page 2 The POTW now has a history of Whole Effluent Toxicity failures that started during March 2007, and included the months of April and May of 2007. This time period was followed by two quarterly periods of "Pass". Afterwards, the following months resulted in WET failures: December 2007, January 2008, February, March, April, May, June, July, September, and October 2008. Please note that August 2008 resulted in a "Pass" condition (<10.4%). However, in the last eleven months of consistent WET testing, only one has met the NPDES permit chronic limit of 2.6%. This Office stresses that it is a condition ;that needs to be corrected in an urgent manner. The WET failures should be treated with firm seriousness to resolve this toxicity condition. This Office stresses that the sources of toxicity must be identified and the toxicants reduced to levels that result in WET chronic values of 2.6% or greater. In order for this Office to keep abreast of the Toxicity Identification Evaluation, please frequently keep Dale Lopez or me updated. Please investigate all possible sources for the WET failures, including the possibility of additional toxicity due to leakage of swamp spill/sludge from inactive Basin #1 'into the active part of the wastewater treatment plant. Thank you for your update of information. If you have any questions or comments, please feel free to contact Dale Lopez or me at (910) 433-3300. Sincerely, Belinda S. Henson Surface Water Protection Section BSH:DL/dl cc: Dana Folley, PERCS Unit Cindy Moore, ESB Aquatic Toxicity Unit FRO Files November 18, 2008 Ms. Belinda Henson NCDENR N.C. Division of Water quality 225 Green Street — Suite 714 Fayetteville, N.C. 28301-5043 Subject: LMAC NPDES Permit:- NC00044725 Scotland County Dear Ms. Henson, LAURINBURG - MAXTON AIRPORT COMMISSION (910) 844-5081 ®ENR-FRO NOV 2 1 201.3 MAIO, I am in receipt of your letter dated November 12, 2008 concerning the Whole Effluent Toxicity test failures we are experiencing at our wastewater plant. We understand the serious condition this problem causes and the violations of our permit limits. Please be assured we are working daily to correct this problem. We are following the advice received from your office and our consultant Meritech, Inc. to identify and correct this problem. We have check on several occasions to see if there may be a leak from basin #1 where the•wastewater is being stored from the old closed plant. We do not feel that any leakage is occurring. However, we are in the process of arranging to land apply this product to dispose of this water and eliminate this as a suspect and to make this part of the plant available for future treatment service. In line with your request we will keep you or Dale Lopez advised of any action we are taking concerning this issue to include reports on additional test results. We appreciate any additional suggestions you and your staff may have. Sincerely, Po lr bG•j Paul G. Davis Executive Director • PD/jg,q :c,1:7r, 16701 AIRPORT ROAD:• MAXTON, _N.C:.28364