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Home My WebLink AboutNC0032131_Wasteload Allocation_19920820NPDES WASTE LOAD ALLOCATION PERMIT NO.: NCO032131 PERMITI'EE NAME: Tweetsie Railroad Inc. FACILITY NAME: Tweetsie Railroad Inc. Facility Status: Existing Permit Status: Renewal Major Pipe No.: 001 Design Capacity: Minor 0.070 MGD Domestic (% of Flow): Industrial (% of Flow): Comments: RECEIVING Class: WS-III-Trout 100 % 1 the Middle Fork of the South Fork of the New River Sub -Basin: 05-07-01 Reference USGS Quad: C12NW (please attach) County: Watauga Regional Office: Winston-Salem Regional Office Previous Exp. Date: 11/30/92 Treatment Plant Class: Classification changes within three miles: change to WS-III at Boone Dam. Requested b :,I Randy Kepler Date: 4/28/92 Prepared by: Date: d' 7 L Reviewe b Date: 9 1 Modeler Date Rec. I # zvt3 S t qz Oo Drainage Area (mil ) 9 6 Avg. Streamflow (cfs): /9 7Q10 (cfs) 9 s Winter 7Q10 (cfs) SS 30Q2 (cfs) 87 Toxicity Limits: IWC Instream Monitoring: % Acute/Chronic Parameters Upstream Location Downstream Location Effluent Characteristics Summer Winter BOD5 (mg/1) 30 NH3-N (mg/1) 26 D.O. (mg/1) kvzdw,;�^, TSS (mg/1) 3o F. Col. (/100 ml) Leo pH (SU) 6 - i 4d�E Cl� 6 7 u LC Comments: lt Q( �-003 I�� .I�?< _../ / s N tz0•. ` tf��\snp- O - - , • , ( rant A\ .— rum i 7l�'Ecim P rk • = U - ENTRAL FILE COPY Wtn- rA \ r:` `• _.11%l.� _.�\ `� I;��\\ `L:�\\\l\\� N. `• ��lii:;,((�, i ._., `�•.,,c:+m':\ \� �'�-36`07'30' "41 ........... ..m..,w_.°°_ 4430ea°-E. i. i A. (_). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final NPDES No. NCO032131 Daring the period beginning on the effective date of the Permit and lasting until expansion above 0.0024 MGD, the Permittee is authorized to discharge from outfall(s) serial number(s) 001. Such discharges shall be_ limited and monitored by the Permittee as specified below: Effluent Characteristics Discharge Limitations Monitoring Requirements Monthly Lbs da Other Units Avg. Weekly Avg. Monthly Avg. (Specify) Weekly Avg Measurement Sample *Sample Frequen Type Location Flow BOD, 5Day, 20 Degrees C 0.00240 MGD Weekly Instantaneous I or E Total Suspended Residue 30.0 mg/1 30.0 mg/l 45.0 mg/1 45.0 2/month Grab E NH3 as N mg/1 2/month Grab E Fecal Coliform (geometric mean) 200.0/100 ml 400.0/100 ml Monthly 2/month Grab Grab E Total Residual Chlorine Temperature 1.9 mg/1 2.85 mg/1 Daily Grab E gWeekly Grab E * Sample locations: E - Effluent, I - Influent The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab sample. There shall be no discharge of floating solids or visible foam in other than trace amounts. M3 n m 2 bC-� ��l � d3 r n "a .moo A. (_1_). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final NPDES No. NC0032131 During the period beginning on -the the effective date of the expansion above 0.0024 MGD and lasting until expiration, shall be limited Permittee is authorized to discharge from outfall(s) serial number(s) 001. Such disFharges_ and monitored by the Permittee as specified below: Effluent Characteristics Discharge Limitations Lbs da Other Units (Specify) Monthly Avg. Weekly Avg Monthly Ayg• Weekly Avg. Monitoring Requirements Measurement Sample *Sample Frequency Type Location Flow BOD, SDay, 20 Degrees C 0.070 MGD Continuous Recording I or E Total Suspended Residue 30.0 mg/l 45.0 mg/1 2/month Composite E NH3 as N 30.0 mg/l 45.0 mg/l 2/month Composite E Fecal Coliform (geometric mean) 200.0/100 ml 400.0/100 ml Monthly 2/month Composite Grab E Total Residual Chlorine Temperature 67.0 ug/l 100.5 ug/l Daily Grab E E Total Nitrogen (NO2 + NO3 + TKN) Weekly Grab E Total Phosphorus 2/Year Composite E 2/Year Composite E * Sample locations: E - Effluent, I - Influent The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab sample. There shall be no discharge of floating solids or visible foam in other than trace amounts. M m ZD C-3 # 'n .t .'i Part III Permit No. NCO032131 F. Toxicity Reopener. This permit shall be modified, or revoked and reissued, to incorporate toxicity limitations and monitoring requirements in the event toxicity testing or other studies conducted on the effluent or receiving stream indicate that detrimental effects may be expected in the receiving stream as a result of this discharge. G. If this facility is built in phases, plans and specifications for the next phase shall be submitted when the flow to the existing units reaches 80% of the design capacity of the facilities on line. At no time may the flow tributary to the facility exceed the design capacity of the existing units. 1091924% OCT 24 1989 11 CENTRAL FILE COPY . GKEX08/MP 86/02/92 � COMPLIANCE EVALUATION ANALYSIS REPORT PAGE i PERMIT--NC8832i31 PIPE--081 REPORT PERIOD: 9185-9284 LOC^--E FACILITY--TWEET%IE RAILROAD DESIGN FLOW-~ '0788 CLASS--2 LOCATION --BLOWING ROCK REGION/COUNTY--04 WATAUGA 58858 8008 08538 8808 31616 58860 88018 88408 MONTH Q/MGD BOD RE%/T%% NH3+NH4- FEC COLI CHLORINE TEMP PH LIMIT F ^8824 F 30,O0 F 38^0 NOL F 280^O F 1^908 NOL 9^8 6^8 91/85 .020F ^20 1^O 2^80 LE%%THAN ^OOO 14.88 6^8~6^7 LIMIT F ^8700 F 30^08 F 38^8 NOL F 288^0 F 67088 NOL 9^8 6^8 91/06 ^0812 15.98 8^8 8.58 LE%%THAN ^888 18^08 7^4-70 91/87 ^8128 2^30 4^O 27^08 20^8 19.80 7^0-60 � � 91/88 ^028 18^20 3.5 1^28 LE%%THAN ^888 19^88 6^9~6"8 91/89 ^8120 1"35 9^8 i^8O 85^8 ^888 i8^88 6^9-6^8 91/18 ^8128 5^30 9^8 15.08 48^8 1888 16^08 7^4-7^8 � 91/ii � ^8228 4^58 2^8 LE%%THAN 45^8 ^880 15"80 7"3~7^2 � � 91/12 ^8802 1.48 16.5 2^88 LE%%THAN ^008 9^08 7^4-7^2 92/Oi 92/82 92/83 ^OdOO ii^YO LE%%TMAM 25^00 LE%%THAN ^800 8^68 7^4-6^8 AVERAGE ^068 5^89 6^6 Q.41 47^5 ^008 15.17 MAXIMUM ,0688 i5^90 16.5 27^88 85^8 -------- 19"08 7^400 MINIMUM .0882 ^28 LE%%THAN LE%%THAN LE%%THAN ^OOO 8.68 6^700 | UNIT MGD MG/L MG/L MG/L 4/188ML U[/L DEG.0 %U � IGKEX@8/^MP - O6/O2/92 COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 2 ^ PERMIT^-NCO832i31 PIPE--80i REPORT PERIOD: 9185-9284 LOC--^E FACILITY-~TWEET%IE RAILROAD DESIGN FLOW-- '8788 CLASS--2 | LOCATION~ -BLOWING ROCK REGION/COUNTY~^84 WATAUGA | 88688 08665 � MONTH TOTAL N PHO%-TOT LIMIT NOL NOL � 91/86 9^808 3^9888 | 91/88 15^608 160588 91/11 i7^888 5^5500 � 9i/i2 � 92/Oi 92/O2 92/83 � AVERAGE 13^866 8^7933 � MAXIMUM 17^008 16^8500 MINIMUM 9~000 3.9880 | UNIT MG/L MG/L ,G9EXIS/MP- 06/02/92 COMPLIANCE EVALUATION ANALYSIS REPORT PAGE i PERMIT---NC0032i3i PIPE---00i REPORT PERIOD: 9005-9f04 L-OC---E FACILITY---TWEETSIE:: RAILROAD DESIGN FLOW--- .0700 CLASS--2 .LOCATION --BLOWING ROCK REGION/COUNTY----04 WATAUGA 50050 0000 00530 00610 31616 50060 00010 00400 MONTH Q/MGD BOD RE:.S/TES NH3+NH4- FE.0 COLI CHLORINE TEMP PH LIMIT 1= .0024 F 30.00 F 30.0 NOL F 200.0 F 1.900 NOL. 9.0 6.0 90/05 .00is 16.70 13.0 & 00 LESSTHAN .000 16.00 & 1--6.1 90/06 .008 LESSTHAN 210 37.80 LESSTHAN .000 17.00 6.2-6. 1 90/07 .009 f42.50F 20.3 70.10 LESSTHAN .000 20.00 6.3-6.2 90/08 .0022 1 f 6.0t}F 28.1 57.50 LESSTHAN .000 18.00 6.4-6.2 90/09 .0019 171.50E 43.3E 74.f0 LESSTHAN .000 20.00 6.4-6.0 90/f0 .0015 24.00 21.0 4& 10 141.0 .000 14.00 6.4--6.2. 90/ 1 1 .0016 6.60 8.0 3.30 L.ES'STHAN .000 1 & 00 6.2-6. 2 1 90/ 1 2 91/01 91/02 91/03 .0000 91/04 AVERAGE .005 79.55 22.1 42.70 141.0 .000 17,00 MAXIMUM .0022 171.50 43.3 74.10 141.0 20.00 6.400 MINIMUM .0000 LESSTHAN & 0 3.30 LESSTHAN .000 1& 00 6.000 UNIT MGD MG/L MG/L. MG/L 000ML.. MG/L DEG.0 EU _ 'GKEX88/MP O6/82/92 , ' COMPLIANCE EVALUATION ANALYSIS REPORT PAGE i ' PERMIT-~NC8832i3i PIPE~-88i REPORT PERIOD: 8905-9884 LOC --- E FACILITY--TWEET%IE RAILROAD DESIGN FLOW-- .8788 CLASS-~2 LOCATION --BLOWING ROCK REGION/COUNTY`-84 WATAUGA 58858 80318 88538 88618 31616 58860 888iO 08480 MONTH Q/MGD BOD RE%/T%% NH3+NH4~ FEC COLI CHLORINE TEMP PH LIMIT F ^8824 F 38^88 F 38.8 F 1088.0 F 1'980 9^8 6^0 89/O5 LIMIT F ^8024 F 38^88 F 38^8 NOL F 1800^0 F 1'988 NOL 9"0 6^8 | 89/86 ^0817 LE%%THAN 7^8 K70 ^8 ^800 14^8O 6^4^6^2 1 89/87 ^0817 24^38 12^8 89/08 '8824 vvq)20^3 � 89/89 ^0822 4^58 6^8 8908 ^005 26~1 � LIMIT F ^0824 F 38^88 F 38^O � 89/1i 8902 ^888O � 90/01 .8888 98/82 ^8080 98/O3 98/84 ii^3O 158,0 .888 15^88 6^2-6'8 088 i5.88 6^2-6^8 3.80 28^8 ^888 16^08 60~6^8 22.78 28^8 ^800 13'88 6^2-6^O NOL F 208.0 F i^908 NOL 9.8 6^8 AVERAGE ^8011 3i^85 i4"4 ii^16 39^6 ^880 14^68 MAXIMUM ^0024 49^88 26^1 22^78 i58^8 -------- ~~-- 16^00 ~---6400 MINIMUM ,0088 LE%%THAN 6^0 i,78 ^O ^800 i3^8O 6.000 UNIT MGD MG/L MG/L MG/L 4088ML MG/L DEG'C %U RECEIVED N.C. Dept. of EHNR Facility Name: NPDES No.: Type of Waste: Facility Status: Permit Status: Receiving Stream: Stream Classification: Subbasin: County: Regional Office: Requestor: Date of Request: Topo Quad: FACT SHEET FOR WASTELOAD ALLOCATION Request # 6900 Tweetsie Railroad, Inc. NC0032131 Domestic - 100% Existing Renewal Middle Fork of the South Fork of the New River WS-III Trout 050701 Watauga Stream Characteristic: Winston-Salem USGS # Kepler Date: 5/l/92 Drainage Area (mi2): C12Nw Summer7Q10 (cfs): Winter 7Q10 (cfs): Average Flow (cfs): 30Q2 (cfs): IWC (%): J I I i - " ,192 Winston-Salem Regiok,�,; �_)ttice 9.6 3.5 5.5 19 8.7 Wasteload Allocation Summary (approach taken, correspondence with region, EPA, etc.) Facility requesting renewal of existing NPDES permit. Technical Support recommends facility be given the NH3 Choice Option of existing limits with a toxicity test or NH3 limit of 26 mg/l. 7h�5 [va5kMo' i5 aysomin� �aU.W y has 0M,,r(c(/�a o.o7rnr�cl P4/ � (r Special Schedule Requirements and additional comments from Reviewers: Recommended by; Reviewed by Instream Assessment: Regional Supervisor: Permits & Engineerin 7/8/92 RETURN TO TECHNICAL SERVICES BY: AUG 1 1 1992 Z W F e C7 -10 rn O 0 Existing Limits: Wasteflow (MGD): BODS (mg/l): NH3N (mg/1): DO (mg/1): TSS (mg/1): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (µg/1): Oil & Grease (mg/1): TP (mg/1): TN (mg/1): Wasteflow (MGD): BODS (mg/1): NH3N (mg/1): DO (mg/1): TSS (mg/1): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (µg/1): Oil & Grease (mg/1): TP (mg/1): TN (mg/1): Toxicity test (P/F): CONVENTIONAL PARAMETERS Monthly Average Summer Winter 0.070 30 monitor monitor 30 200 6-9 67 Existing Limits w/ Tox Test Su Win 0.070 30 monitor monitor 30 200 6-9 67 Chronic P/F @ 4.1 % t"'� NH3 Choice Limits 0.070 30 26 monitor 30 200 6-9 67 Limits Changes Due To: Parameters) Affected Change in 7Q10 data Change in stream classification Relocation of discharge Change in wasteflow Other (onsite toxicity study, interaction, etc.) Instream data New regulations/standards/procedures New facility information _X_ Parameter(s) are water quality limited. For some parameters, the available load capacity of the immediate receiving water will be consumed. This may affect future water quality based effluent limitations for additional dischargers within this portion of the watershed. Xj No parameters are water quality limited, but this discharge may affect future allocations. INSTREAM MONITORING REQUIREMENTS Upstream Location: Downstream Location: Parameters: Special instream monitoring locations or monitoring frequencies: MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS AAd ,quacy of Existing Treatment Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities? Yes No If no, which parameters cannot be met? Would a "phasing in" of the new limits be appropriate? Yes No f- If yes, please provide a schedule (and basis for that schedule) with the regional office recommendations: If no, why not? �' s. w o � M-IM Wasteload sent to EPA? (Major) _N_ (Y or N) (If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old assumptions that were made, and description of how it fits into basinwide plan) Additional Information attached? (Y or N) If yes, explain with attachments. w / /14Z.s - /71, ss J C.aw�L„e 6.070416v / xi-'Pm,d e-A,-A-0-4. a_ T-,,..u;— /,, a.- sC,� YSZ-ca� Z�- 070 �lGD ' O P9�� Nf/3 ee..� '�SS 76 ova O°D, t v / / �• 02s Al60 �Gcic �0.095- MCP # A5S5- Co 3 5' It /. I� _ o,o o A 1, 0•/ e, �I �.07a� ls� f 3.ru o.lf' 3r 3,6 _ 4, /'/, tweetsie railroad AMMONIA ANALYSIS 7Q10: 3.5000 cfs NH3 Effl. Conc: 74.0000 mg/l AL (1/1.8 mg/1): 1000.00 ug/l Upstream NH3 Conc.: 220.0000 ug/1 Design Flow: 0.0700 MGD Predicted NH3 Downstream: 2438.41 ug/l 2.438409 mg/l NH3 Limit: 26161.29 ug/l 26.16129 mg/1 AMMONIA ANALYSIS 7Q10: 5.5000 cfs NH3 Effl. Conc: 74.0000 mg/l AL (1/1.8 mg/1): 1800.00 ug/l Upstream NH3 Conc.: 220.0000 ug/1 Design Flow: 0.0700 MGD Predicted NH3 Downstream: 1647.32 ug/1 1.647321 mg/l NH3 Limit: 81892.16 ug/l 81.89216 mg/1 (WINTER) tweetsie railroad CHLORINE 7Q10: 3.5000 CL2 Effl. Conc: 0.0000 AL (17/19 ug/1): 17.0000 Upstream CL2 Conc.: 0.0000 Design Flow: 0.0700 Predicted CL2 Downstream: 0.00 0 CL2 Limit: 565.3870 0.565387 ANALYSIS cfs mg/1 ug/1 ug/l MGD ug/l mg/1 ug/l mg/1