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Home My WebLink AboutNC0021601_Wasteload Allocation_19870812NPDES DOCYHENT !;CANHINO COVER :MEET NPDES Permit: NC0021601 Tryon WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: August 12, 1987 This; document is printed on reuse paper - igmiore any content on the rezrerse ,side NPDES WASTE LOAD ALLOCATION PERMIT NO.: NCOO FACILITY NAME• ()'AN OF TOON) WuJ T P Facility Status: EXISTING PROPOSED (circle one) Permit Status: RENEWAL MODIFICATION UNPERMTITED NEW (circle one) Major Minor Pipe No: FC 31 Domestic (% of F1ow)• r (-X %3 Industrial (X of Flow): 34 Comments - Design Capacity (MGD)• RECEIVING STREAM: \IeEE Class• Sub -Basin• ??t CD(o Reference USGS Quad• /6.7A)W (please attach) County: Regional Office: As Fa Mo f(a Wa Wi WS (circle •se) Requested By: 5AMUFL 1' Prepared By/ Reviewed 3 : Date• Date - Date: g/Vg Modeler Date Rec. 1 i '7C1) //I7 d3S (A, BD 2 /-S Drainage Area (mi) � Avg. Streamflow (cfs)- 7Q10 (cfs) Winter 7Q10 (cfs) S 30Q2 (cfs) 3 a) I.5MGO Toxicity Limits: IWC X (circle one) Acute / hron1__F__,/ Instream Monitoring: 11/12, Parameters Upstream Location Downstream Location Effluent Characteristics 9cJ = ij d' n 9w = /.-//G'L' BOD5 (mg/1) X ?� -; c NH3 N (mg/1) N✓ N;/ D.O. (mg/I) AJ ✓ TSS (mg/1) 3o 30 F. Col. (/100m1) /000 /000 pH (SU) 6- 6_pLori, ED — Comment• • /cc/ r Q J . 4C-oh+.ne.;(1 h E AA) i S .4 -/A/ C44%1.. `uZi �t/tr .h,.4 • --------------------- WASTELOAD ALLOCATION APPROVAL FORM Permit Number Facility Name Type of Waste Status Receiving Stream Stream Class Subbasin County Regional Office Requestor Date of Request Quad : NC0021601 : TOWN OF TRYON WWTP : 37% D0M./63% IND.; 68% DOM./32% IND. : EXISTING : VAUGHN CREEK :C : 030806 : POLK Drainage Area : ARO Average Flow : BRIDGES Summer 7010 : 5/6/87 Winter 7010 : G1ONW 3002 : Wasteflow (mgd): 5-Day BOD (mg/1): Ammonia Nitrogen (mg/l): Dissolved Oxygen (mg/1): TSS (mg/1): Fecal Coliform (#/100ml): PH (SU): . RECOMMENDED EFFLUENT LIMITS P_) SUMMER WINTER 0.8 1.5 1.5 30 30 30 MR MR NR MR 1 MR 30 30 30 1000 1000 1000 6-9 6-9 6-9 A) Upstream (Y/N): N Downstream (Y/N): N Location: Location: *EQUATION USED FOR BOD ULTIMATE = *TOXICITY LIMITS A D. �� u�^1 �mw�,.`v�� Recommended by Reviewed by: Tech' Support Supervisor Regional SU. ' Permits & Eng RETURN Request No. :4034 --------------- ____ P% EC E IV E D 8h\9rOu0|ity Sn:HOm 'U| � O 1O�7 ju� �u /�u/ Axhavi||e Office (sq 4npr V.O:O Un�iU8 (cfs) : 15 (cfs) : 4. (cfs) : 5. (cfs) v. MONITORING hInIF 0� -' - �� - =' COMMENTS 2.0 BOD5 + 4.5 NH3. TO TECHNICAL SERVICES BY .o AUG 3 " K8ITS&ENGINEERING � � � �;e Iyvsi Date 71 Date Date OyAgun- Date AUG�1 1�� nw��^ ��« C/ Facility Name / 0.1 54, Permit # NGad Z16of TOXICITY TESTING REQUIREMENT The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay proce- dure (North Carolina Chronic Bioassay Procedure - Revised *February 1987) or subsequent versions. The effluent concentration at which there may be no observable inhibi- tion of reproduction or significant mortality is 2V7 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform9wWERLy monitoring using this procedure to establish compliance with the permit condition. The first test will be performed within thirty days from issuance of this permit. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Technical Services Branch North Carolina Division of Environmental Management P.O. Box 27687 Raleigh, N.C. 27611 Test data shall be complete and accurate and include all supporting chemi- cal/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any test data from this monitoring requirement or tests per- formed by the North Carolina Division of Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited docu- ment, such as minimum control organism survival and appropriate environmen- tal controls, shall constitute an invalid test and will require immediate retesting. Failure to submit suitable test results will constitute a fail- ure of permit condition. 7Q10 cfs Permited Flow /.S MGD Basin & Sub -basin 84,54 Receiving Stream (4µ.AN CiIfiC County Folk R ommended by: q,G � ate i 7f/ /7/17 Facility Name 4 01 dully° Permit # /✓Goo 2/4o / TOXICITY TESTING REQUIREMENT The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay proce- dure (North Carolina Chronic Bioassay Procedure - Revised *February 1987) or subsequent versions. The effluent concentration at which there may be no observable inhibi- tion of reproduction or significant mortality is 2-'1 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform tv-aiLy monitoring using this procedure to establish compliance with the permit condition. The first test will be performed within thirty days from issuance of this permit. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Technical Services Branch North Carolina Division of Environmental Management P.O. Box 27687 Raleigh, N.C. 27611 Test data shall be complete and accurate and include all supporting chemi- cal/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any test data from this monitoring requirement or tests per- formed by the North Carolina Division of Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited docu- ment, such as minimum control organism survival and appropriate environmen- tal controls, shall constitute an invalid test and will require immediate retesting. Failure to submit suitable test results will constitute a fail- ure of permit condition. 7Q10 y cfs Permited Flow 0.80 MGD Recommended by: Basin & Sub -basin $Rpob Receiving Stream VAsigt,N G•cclC ac "-� County ►�o�K Il ate 7/(7(q7 SUMMER MODEL FOR TOWN OF TRYON @ 0.8 MOD. SAVED ON LBDATA19,TRYON1 ------ MODEL RESULTS ---------- Discharger : TOWN OF TRYON WWTP Receiving Stream : VAUGHN CREEK ------------------------------------------- The End D.O. is 7.28 mg/l. The End CBOD is 12.06 mg/l. The End NBOD is 16.31 mg/l. _________________________________________________________ WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/l) Milepoint Reach # (mg/l) (mg/l) (mg/l) (mgd) ______ _________ _______ ----------- segment 1 5.68 0.00 1 Reach 1 60.00 90.00 0.00 0.80000 Reach 2 0.00 0.00 0.00 0.00000 *** MODEL SUMMARY DATA *** Discharger " TOWN OF TR ON WWTP Receiving Stream n WMJGHN CREEK Summer 7Q 10 tt 4. Design Temperature: 25. Subbasin 2 030806 Stream Class: C Winter YC 10 ;; 5. :LENBTH1 SLOPE VELOCITY 1 DEPTH: Kd 1 Kd 1 Ka 1 Ka 1 KN : KN 1 KNR 1 KNR 1 mile 1 ft/mil fps 1 ft :design: 220* :design: 320' ldesign1 220¢ :design: 320' 1 Segment 1 1 0.301 21.001 0.402 1 0.93 1 0.45 1 0.35 116.94 15.201 0.73 1 0.50 0.73 1 0.00 1 Reach 1 1 1 1 1 1 1 1 1 1 1 Segment 1 1 1.501 17.001 0.396 1 0.98 1 0.41 1 0.33 113.50 12.101 0.44 1 0.30 0.44 1 0.00 : Reach 2 1 1 1 1 1 1 1 1 1 1 : Flow 1 CBOD : NBOD 1 D.O. 1 cfs 1 mg/1 1 mg/1 : mg/1 Segment I Reach :1.. Waste 1 1.240 1 60.000 1 90.000 1 0.000 Headwaters: 4.000 1 2.000 1 1.000 1 7.440 Tributary 1 0.000 1 P.000 1 1.000 1 7.440 * Runoff 1 0.000 1 2.000 1 1.000 fi a 1 7.440 Segment 1 Reach 2 Waste 1 0.000 : 0.000 1 0.000 1 0.000 Tributary 1 0.000 1 2.000 1 1.000 1 '7„440 * Runoff 1 0.670 1 2.000 1 1.000 1 7.440 * Runoff flaw is in cfs.:mile 8UMMER MODEL FOR TOWN OF TRYON @ 0.8 MGD. SAVED ON LBDATA19,TRYON1 | Seg # | Reach # < Seg Mi D"O. CBOD NBOD | Flow ( 1 1 0.00 5.68 15.73 22.06 5.24 1 1 0.05 5.83 15.67 21.94 5.24 1 1 0.10 5.96 15.62 21.82 5.24 1 1 0.15 6.07 15.57 21.69 5.24 1 1 0.20 6.17 15.51 21.57 5.24 1 1 0.25 6.26 15.46 21.45 5.24 1 1 0.30 6.84 15.41 21.33 5.24 1 2 0.80 6.34 15.41 21.33 5.24 1 2 0.60 6.74 14.63 20.17 5.44 1 2 0.90 6.97 13.91 19.09 5.64 1 2 1.20 7.11 13.25 18.09 5.84 1 2 1.50 7.21 12.63 17.17 6.04 1 2 1.80 7.28 12.06 16.31 6.24 | Seg # < Reach # 1 Seg Mi | D.O. CBOD NBOD Flow | Discharger Receiving Stream SUMMER MODEL FOR TOWN OF TRYON @ 1.5 MGD. SAVED ON LBDATA19,TRYON2 ---------- MODEL RESULTS ---------- : TOWN OF TRYON WWTP : VAUGHN CREEK ---------------------------------------------------- The End D.O. is 6.91 mg/l. The End CBOD is 18.36 mg/l. The End NBOD is 25.96 mg/l. Segment 1 Reach 1 Reach 2 DO Min 5.07 Milepoint _________ 0.00 Reach # 1 WLA WLA WLA CBOD NBOD DO Waste Flow (mg/l) (mg/l) (mg/l) (mgd) 60.00 90.00 0.00 0.00 1.00 0.00 1.50000 0.00000 ***.MODEL SUMMARY DATA *** Discharger ; TOWN OF TRYON WWTP Receiving Stream . ^ VAUGHN CREEK Summer 7010 a 4. Design Temperature: 25.. Subbasin n 030806 Stream Class: C Winter 7010 n 5. :LENGTH! SLOPE! VELOCITY 1 DEPTH! Kd Kd 1 Ka 1 Ka 1 KN 1 KN 1 KNR 1 KNR 1 mile 1 ft/mil fps 1 ft !design: 320° ldesignl 320° 1design1 320° :design: 320° 1 Segment 1 1 0.30 21.001 0.463 1 0.95 1 0.47 0.37 119.51 17.501 0.73 0.50 1 0.73 1 0.00 Reach 1 1 Segment 1 1 1.50 17.001 0.450 1 1.01 1 0.43 0.34 115.37 13.751 0.44 1 0.30 1 0.44 1 0.00 Reach P 1 1 1 i Flow 1 CBOD i NBOD i D.O. 1 cfs mg/1 mg/1 1 mgll Segment 1 Reach, 1. Waste 2.325 1 60.000 1 90.000 1 1.000 Headwaters! 4.000 2.000 1 1.000 1 7.440 Tributary 0.000 c.. s f»�4 )[) } 11.000 .000 1 7.440 ' Runoff 10.000 } n } .) h.) ! .1. 1 7.440 Segment 1 Reach 2 Waste 1 0.000 s 0.000 1 0.000 1 0.000 Tributary 1 0.000 1 2.000 1 1.000 1 7.440 Runoff 1 0.670 1 2.000 1 1.000 1 7.440 Runoff flow is in i c:•f e/m i. 1. e SUMMER MODEL FOR TOWN OF TRYON @ 1.5 M8D. SAVED ON LBDATA19,TRYON2 | Seg # < Reach # | Seg Mi D.O. CBOD NBOD | Flow | 1 1 0.00 5.07 23.82 33.72 6.33 1 1 0.05 5.24 23.25 33.55 6.83 1 1 0.10 5.88 23.18 33.39 6.33 1 1 0.15 5.51 23.10 33.23 6.33 1 1 0.20 5.63 28.03 33.07 6.33 1 1 0.25 5.78 22.96 82.91 6.33 1 1 0.30 5.82 22.89 82.75 6.33 1 2 0.30 5.82 22.89 32.75 6.33 1 2 0.60 6.27 21.B6 31.21 6.53 1 2 0.90 6.54 20.90 29.76 6.73 1 2 1.20 6.71 20.00 28.42 6.93 1 2 1.50 6.88 19.15 27.15 7.13 1 2 1.80 6.91 18.36 25.96 7.33 | Seg # | Reach # | Seg Mi | D.O. CBOD NBOD Flow | WINTER MODEL FOR TOWN OF TRYON @ 1.5 MOD. SAVED ON LBDATA19,TRYON3 Discharger Receiving Stream ---------- MODEL RESULTS : TOWN OF TRYON WWTP : VAUGHN CREEK The End D.O. is 9.44 mg/l. The End CBOD is 17'14 mg/l. The End NBOD is 24.68 mg/l. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/l) Milepoint Reach # (mg/l) (mg/l) (mg/1) (mgd) ______ _________ _______ ____ ____ ------------ Segment 1 6.33 0'00 1 Reach i 60.00 90.00 0.00 1.50000 Reach 2 0.00 0.00 0.00 0.00000 *** MODEL SUMMARY DATA *** . . ` Discharger : TOWN OF TRYON WWTP Receiving Stream : VAU8HN CREEK Summer 7Q10 : 4. Design Temperature: 14. 8ubbasin : 030806 Stream Class: C Winter 7Q10 : 5. !LENGTH! SLOPE! VELOCITY | DEPTH! Kd | KU | Ku 1 Ku 1 KN | KW 1 KN8 | KNH | | mile | ft/mi; fps | ft |dos gn| @201 !design! Q201 Nes gn| @20" |design| 3200 1 Segment 1 1 0,30 21.00 0.517 | 0.97 | 0.30 | 0.39 117.14 19.5411 0.32 | 0.50 0.38 | 0.00 | Reach 1 | � | � | Segment 1 | 1.501 17.001 0.499 1 1.02 | 0.27 ( 0.35 113.40 1 15.271 0.19 | 0.80 | 0.19 1 0.00 � Reach 2 1 I Flow | CBOD ( I'll BOD | D.O. � cfs | mg/l | mg/1 Rig /l Segment 1 Reach 1 Waste | 2.325 | 60.O00 | 90.000 | 0.000 Headwaters( 5.000 | 2.000 | 1.000 | 9.280 Tributary | 0.000 | 2.000 | 1.000 | 9.280 * Runoff | 0.000 � 2.000 ( 1.000 It 9.280 Segment 1 Reach 2 Waste | 0.000 Tributary ( 0.000 * Runoff | 0.670 | | � 0.000 | 0.000 | 0.000 2.000 | 1.000 | 9.280 2.000 1.000 | 9.280 * Runoff flow is in cfs/mile ` , WINTER ^ MODEL FOR TOWN OF TRYON @ 1.5 MC-')D. SAVED ON LBDATA19,TRYON3 | Seg # | Reach # | Seg Mi D.O. CBOD NBOD | Flow I 1 1 0.00 6.33 20.41 29.25 7.83 1 1 0.05 . 6.63 20.37 29.19 7.33 1 1 0.10 6.90 20.34 29.14 7.33 1 1 0.15 7.14 20.30 29.09 7.38 1 1 0.20 7.36 20.27 29.03 7.33 1 1 0.25 7.56 20.28 28.98 7.83 1 1 0.30 7.74 20.20 28.92 7.38 1 2 0.30 7.74 20.20 28.92 7.33 1 2 0.60 8.46 19.52 27.98 7.58 1 2 0.90 8.90 18.87 27.09 7.73 1 2 1.20 9.16 18"27 26.25 7.93 1 2 1.50 9.38 17.69 25.45 8.13 1 2 1.8O 9.44 17.14 24.68 8.33 | Seg # | Reach # | Seg M1 D.O. CBOD NBOD Flow � 41/ A) ertgL v3ogo6 Nokrfi 2. /531'.5jo 0 fit : ?,'3f w• Est. S?Q,o = cs4. p,O = 500 is/ - x�6 , M, • 02. /53,, /650 D,¢ = 28.2•�, ' z th S Kp/� /Zc = 2,f 3Up2 76644 E�= f g94/A,11- 579i�v yif,1- .V3cf/m,2 ca7p/a q/ t/E s v 'Yeti/A,' 7- S79./D %� as D. rc,54 , (479,,0 yM Id = a. s'8/ter. 3o9t yield = a•I 74" .�EkCH Z/7 7/‹.,/ 02..//539, 7300 !4a377m, z sr; 94:St/ afr ss*npi. /7./c{S £sf; (-.79./o= 35,7c6. /,3 i.„ c44?- sue• - 0, 67d/Aii s S*,sc7f) / 1 C = / 2V _ o, 0.23 7 N .23,7 2. ('.go A4t0) /,2S1c4 ' C ' ,? 6.94, Xt,Jcz... .2, 33 c63 = d, 36e �, 36.2 P. /.5 mero) ,,z3 3ci3 t ti y7 C O d %L)J/IUJ 144 11 St e r i .. r.. kv gas O )66 1.9M dirt SIope aa� a5 O A 6 a,3 distance