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Home My WebLink AboutNC0022900_Authorization to Construct_19821206mn -L 4, .;r '_O- ' 'WKYOW 77W-WQn' QG-eG C" a F -1 A' 01 n- VA 0 1 MGO .s, 71 PAILd rte'1•'-, 'i d ,f 0, D- v7vul 792-5r"r uUn Tv 9 NuWG: sh"IDAWS A cq- -Onr -041TIn-, 97mr, '.nr%vr.7 XK 900-0 71' =bur 1SWIT701 `H9 N W"OP'n 07 K a; CUU EnjOLOUnnq W�jj* cn, VMy 001W - Cj -;jTWC M!PrWUYSQWWOM I- =G0TQT1'QQ 151 1: ; WLS- My-, rjG ann-gloUp yro f7oySr70U. QCV7�;CP- 11 :001C Jj* Qjjj')Q' j 7r nni, , , - OUCWrIDU rjrU0Z IPM C-EWIN7L gls-r-aqt Z00 U10 WAnWPCi' 3- TO 0-W7M-Cc Soy %! moTsma— ncnqS)nn mounq johmm :n' :&7' 00 UO -77 -G W�= Q nry- Tn-ynj z- - Tov cc nj tprZacr ID In"n"- also- z mu nqvAr ry- RP,70 on-cqu 1" "TI" 10-711"NOU" co 114'^_'Slu— 0-0 "A"" n"B; ""T 9";" Mcs" "RPOIZ CROZ70MV11" SON "TrTo- r in nT-- .-nl - W) "OOquiz! 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Down: ,=0 -AnWA , 27 rub"' UA A 5% -Cqc 1, n -r 7rhsa? -1� -nVar alp vqjr prfr- jfyp" y4c. 0KRZY" "' -sqns ra m -�u re fonormnc, raym- m,- jjvj,-�: Y&T 7C -5, N0070'' Wzl- ZW' VINcTs MY- ;2jn -01,011 yop" a -17p ro I jac - Q. MIA - j"nW . xOU11T. *Mr. Perry B. Owens, President ' Utilities, Inc. ' December 6, 1982 cc: Avery County Health Department Johnny T. Johnson & Associates Mr. Roy Davis Mr. Forrest Westall Asheville Regional Manager Sincerely yours, Original Signed By FORREST R. WESTALL FOR Robert F. Hel" Director ft. DIVISION OF E.WVIIIONti LIUAL I'ViNAG"i1al Mr. Perry B. Omnis, Utilities, Inc. 2335 Sanders Road Northbrook, Illiuois Deur Mr. Owens: President 60062 SUBJECT: Permit No. NCO022900 t October 11. 1982 S--1-; 3 z -2-- Authorization Authorization to Construct , Utilities, Inc., Northbrook Illinois - Parent Company Sugar Mountain Utilities, Inc. Sugar Mountain Wastewater Treatment Plant Expansion Avery County The final plans and specifications for the: subject project have been reviewed and found to be satisfactory. Authorization is hereby granted for the construction of wastewater treatment plant additions and changes so as to increase the treatment capacity from .2 I}fD to .5 MGD consisting of the replacement and relocation of approxi- mately 170 lineal feet of 8 -inch gravity sewer line, a packaged bur screen/eomminutor mid flow splitter, parshall flume, with flow meter and recorder, a 0.3 ?IGD Extended Air Package: Plant with a secondary clarifier, a 33,700 gallon aerobic sludge digester, dual tertiary filters; plus modifications to the existing 0.2 MGD WWTP to integrate it and its components, ,gaseous chlorination, post aeration, plus piping; and appurten- ances to serve the Sugar Mountain Area developments. This Authorization to Construct is issued in accordance with Part III paragraph C of NPDES Permit No. NCO022900 issued September 30, 1382, and shall be subject to revocation unless the wastewater treatment facilities are constructed in accordance with the conditions and limitations specified iu Permit No. NU0022900. One (s) set of approved plana and specifications is being forwarded to you. If you have airy questions or need additional information, please contact 'ter. A. R. iiagstrom, telephone =her 919/733-7120. Sincerely, ,,o�u5s y OnDnU W. LEE FLEMMNG, JR., for Robert F. helms Director cc: Avery County Health Department Johnny T. Johnson & Associates, Inc. Mr. Roy Davis Mr. W. Lee Fleming, Jr. Asheville Regional Manager J d r s �i s �• � ` 4 t o •- r i 0 c.D 0 0 Facility Name: NPDES TASTE LOAD ALLOCATION ou'�"t0 ()y''L,7' 0_0 Date: 51-234L - (Guideline limitations, if applicable, are to be listed on the back of this form.) Design Temp.:_ d &C_Drainage Area: �� rR �' Avg. Streamflow:,� Comments Existing No. pPipe ,C ®®Permit County: Proposed Q below outfall): • Slope: �l - Design Capacity (MGD): Q•�O V Industrial (% of Flow): Domestic (% of Flow): /019 2 9tle-� G�C7C�/s' Q 1 Receiving Stream: Class: Sub -Basin: !qT' Reference USGS Quad: (Please attach) Requestor: !a-eg-ietr Office (Guideline limitations, if applicable, are to be listed on the back of this form.) Design Temp.:_ d &C_Drainage Area: �� rR �' Avg. Streamflow:,� Comments 7Q10: 0,7� -5 Winter 7Q10: 30Q2: Location of D.0.minimum (miles below outfall): • Slope: �l - Velocity (fps) : 404 Kl (base e, per day, 200C): 0. Y K2 (base e, per day, 200C) 2 f�� cc t r� G�C7C�/s' Effluent Characteristics Monthly Average Comments 64 f�� cc t r� G�C7C�/s' ,� e 1�..E' Effluent Monthly Characteristics Average Comments Original Allocation a • Revised Allocation Date(s) of Revision(s) Ca (Please att5kh previous allocation) Prepared By : /T�� G�� -'' �* Reviewed By : Date : _ 7-9-&-22 For Appropriate Dischargers, List Complete Guideline Limitations Below Effluent Monthly Maximum Daily Characteristics Average Average Comments Type of Product Produced Lbs/Day Produced Effluent Guideline Reference r North Carolina Department of Natural Resources &Community Development James B Hunt, Jr , Governor Joseph W Grimsley, Secretary Division of Environmental Management January 6, 1982 Mr. William_ Knowles Johnny T. Johnson & Assoc., Inc. Interstate Center/16 Berry Hill Rd. P. 0. Box 21066 Columbia, SC 29221 Dear Mr. Knowles: Per your request dated December 10, a Level "B" analysis has been completed analyzing the proposed expansion of the Sugar Mountain WWTP located on the Elk River. Attached is a tabulation of the effluent limits. The limits are maximum monthly mean values unless otherwise noted. The limits reflect current policies and methodologies in the State Continuing Planning Process and are part of the Watauga River Basin Plan. We have also attached a discussion and explanation of the effluent limits. Please contact Mr. Mark Lewis of my staff if you have any questions concerning the limits. Attachment cc: Roy Davis Mark Lewis Louis Eckley Allen Wahab Sincerely, Forrest Westall, Head Monitoring & Technical Services Branch CE VE Al\,u 1 0 276JI HUILIc— C /611 /6c7 An, Eoujl Opportunity Affirmative Action Emplovcr r y ; . µ DISCUSSION OF EFFLUENT LIMITATIONS Effluent "limitations for BOD5, NH3-N, and dissolved oxygen are established in the State Water Quality Management Planning Process to attain water quality stream standards for dissolved oxygen. The limits for BOD and NH3-N are usually specified as maximum monthly mean values. Maximum weekly values, normally 1.5 times the monthly values, are also specified in the affected discharge permits. There aro two hasic levels of anhlysis ("B" and "C") used to establish the effluent limit< In each case the analysis can conclude an infinite number of combinations of effluent BODS, N113 -N, and D.O. that will attain water quality standards. Obviously it would be impossible to list all combinations and since specific values must be in the NPDES permits, the Division staff selects a likely comhina n on for specification -nf the waste load allocation. Because of the numerous cumhin.ition5 whjch can be conceived, it is possible that some comiDination other than the one selected by the Division of Environmental Management (DEM, will prove to be the optimum. For this reason, DEM encourages the consideration of alternative combinations in the 201 Planning Process which may be advantageous due to the particular waste or waste treatment being considered. Since the waste load allocations and often the NPDES permits precede the development of 201 plans, it will be necessary to update plans and modify permits in a continuing process. The "B" and "C" levels of analysis differ primarily by the amount of data available. The "C" analysis is based on intensive water quality survey data while the "B" analysis is an empirical analysis based largely on the slope and other physical characteristics of the receiving stream. Additional explanation of the "B" and "C" analyses is contained in Appendix E of the Basin Plans. Both analyses use the basic Streeter -Phelps theory. In a "B" level analysis effluent ultimate BOD (BODu) is set equal to BOD5 + 4 x NH3-N. The combination of BOD5 and NH3-N may be modified as long as BODu is not changed. In most level "C" analyses Carbonaceous BODu (CBOD) is equal to 1.5 x BOD5 and Nitrogenous BODu (NBOD) is equal to 4.5 x NH3-N. Although tradeoffs between BOD5 and NH3-N are acceptable in the level "C" allocations, the equation of BODu = 1.5 x BOD5 + 4.5 r NH3-N cannot be used in all cases. When a large difference between Carbonaceous BOD and Nitrogenous BOD stream removal rates exist, the trade-offs will be less in accordance with the equation. In any case, modifications to the waste load allocations have to be approved by DEM before 201 plans or NPDES permits are completed. Proposed allocation modifications should be coordinated through the Local Programs or Technical Services Sections. As a result of regulation changes, the effluent limits on suspended solids may be increased from the normal 30 mg/l to 90 mg/l for lagoon waste treatment systems. Since the attached table does not address the type of treatment system to be employed, this consideration should be utilized in the design of the waste treatment system. Even though higher suspended solids are allowable for lagoon systems, the systems must be designed to allow attainment of the BOD, NH3-N, and D.O. effluent limits. WATER QUALITY OPERATION'S BRANCH Johnny I Johnson & Associates, Inc. INTERSTATE CENTER / 16 BERRY HILL ROAD P. O. BOX 21066 / COLUMBIA, SOUTH CAROLINA 29221 TELEPHONE (803) 772-5740 December 10, 1981 North Carolina Department of Natural Resources & Community Development P.O. Box 27687 Raleigh, NC 27611 Attn: Mr. Forrest R. Westall, Head Monitoring & Tech. Services Branch Re: Dear Mr. Westall: PRINCIPALS Johnny T Johnson, P E William T Knowles, P E. Robert G Burgin, Jr , P E Heyward H Bouknight, P E Sugar Mountain Utility WWTP JTJ File No. U-118 Enclosed is a copy of your letter of July 24, 1981 to Mr. Robert Burgin of our office. Attached to your letter is a tabulation of effluent limits for several WWTP and a discussion of those limits. Since the time you issued these limits, the Sugar Mountain development plans have been revised such that an additional 300,000 GPD of treatment capacity will be required along with the existing 200,000 GPD facility. We are now in the process of pre- paring an NPDES Permit Application and a Preliminary Engineering Report for the total 500,000 GPD of treatment plant discharge. The effluent limits for Sugar Mountain WWTP were given for discharges of 0.3 and 0.4 MGD. We would appreciate it if your office would revise the effluent limits for the 0.5 MGD in order that we can complete our reports and design. Based on your analysis for the Banner Elk WWTP which is downstream from the Sugar Mountain V4TP, I would assume the discharge parameters to remain the same for the 0.5 MGD discharge as they were for the 0.4 MGD discharge with the exception of dissolved oxygen and possibly residual chlorine. However, before we complete design, I need your office to confirm this for me. Mr. Forrest R. Westall North Carolina Dept. of Natural Page 2 Resources & Community Development December 10, 1981 I appreciate your help very much on this item. If you have any questions or need further information, please call me at (803) 772-5740. WTK:ep Enclosure Your truly, JOHNNY T. JOHNSON & ASSOCIATES, INC. William T. Knowles, P.E. Executive Vice -President C��,��L V .Il, '> North Carolina Department of Natural Resources &Community Development James B. Hunt, Jr., Governor Howard N. Lee, Secretary DIVISION OF ENVIRONTEENTAL MANAGEMENT July 24, 1981 Mr. Robert Burgin Johnny T. Johnson L Assoc. Interstate Center 16 Berry Hill Rd P. 0. Bob 21066 Columbia, SC 29221 Dear Mr. Burgin: In response to your letter dated May 27, 1981, we have attached a tabulation of the effluent limits requested. The limits are maximum monthly mean values unless otherwise noted. The limits reflect current policies and methodologies in the State Continuing Planning Process and are part of the Watauga River Basin Plan. C'Please note that the location of the present Sugar Mtn. Utility RTWTP is not Flattop Creek, but rather the headwaters of t e Elk River (Banner Elk Cr.). We have also attached a discussion and explanation of the effluent limits. Please contact Mr. Mark Lewis of my staff if you have any questions concerning the limits. Attachment cc: Roy Davis Mark Lewis Sincerely, 0/ rorrest R. Westall, Head Monitoring s Technical Services Branch P_ O Box 276S7 Raltigh, North C2,ohn2 27611 Ar, Eoual Opportunfry, Alfirmo;:&c Aciton Employer r kECEiVE AUG 1 f 1981 J0..... , _ -1 -V AND ASSOCIATES, INC,