The URL can be used to link to this page

Home My WebLink AboutNC0024970_Permit Modification_20010309NPDES DOCUHENT SCANNING COVER SHEET NC0024970 McAlpine Creek WWTP NPDES Permit: Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) (1Permit Modification ) �+RrF _..yam_.. r.•i": V+• r Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change Meeting Notes Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: March 9, 2001 Yids cocument its printed on reuse paper - ignore arty content on the re-srerree side StF to of North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor William G. Ross, Jr., Secretary Kerr T. Stevens, Director March 9, 2001 Mr. Barry M. Gullet CMUD Administrative Division 5100 Brookshire Boulevard Charlotte, North Carolina 28216 A7A NC NORTH CAROLIN ENVIRONMENT AND Subject: NPDES Permit Modific Permit NC0024970 CMUD McAlpine Creek WWTP Mecklenburg County Dear Mr. Gullet: On March 1, 2001, a final permit for the subject facility became effective. On March 6, 2001, you requested some changes to the subject permit. These changes relate to issues discussed with the Division of Water Quality (Division) on December 21, 2000. As a result, a compliance schedule has been granted for the lindane limit and some changes have been made to the language of Special Condition A.(5.). With respect to the lindane limit that becomes effective March 1, 2002; your facility may request a modification to this permit to remove the limit after submitting twelve months of data indicating no detection of that compound. The Division cannot presently establish a quantitation limit for lindane at your laboratory. However, the Laboratory Services Section of the Division of Water Quality uses a quantitation limit of 0.01 fig/L. Please find enclosed the revised permit pages. The revised pages should be inserted into your permit. The old pages may then be discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U. S. Environmental Protection Agency. If any parts, measurement frequencies or sampling requirements contained in this permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be a written petition conforming to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. If you have any questions concerning this permit modification, please contact Natalie Sierra at (919) 733-5083, extension 551. cc: Mooresville Regional Office, Water Quality Section NPDES Unit Point Source Compliance and Enforcement 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 An Equal Opportunity Affirmative Action Employer Sincerely, rr T. Stevens Telephone (919) 733-5083 FAX (919) 733-0719 VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES Permit NC0024970 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL During the period beginning on the effective date of this permit and lasting until February 28, 2002, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: _ . c • y r:, t:'mfr 3 L\R �}}v. ��rya�;i.i=fit ,— � . � .« ! p. N J' f Y � .,_a § 'E id- ,Vsf' r� ..i' i. 4 ^ " ^ Y . � <F. � /�:''� ♦ �yY �F: i'� �ri3 s $ t r y 1. yr.}ce�s «i..r ��£(6 r }> S,4,i °; r `&_.+y , xz rF + i.`4•s�`�iM� ' 3: aF'r a ;' µ : S',, .. t S' r7, a15 E,'!ac , `•%' n. .i. "�iR,aV ='a1G'iI.,.A +Lr`�� ir(gi ray R X«.'� i�.� �� L l «;;�,..r 7 a.t •-�-. ��11..'x _ .4'' ci�3t:°e �' ��..tl� r« ^'•-. N .:�. :ri;,: 1 . • T ""'• y� 1'.i _ 32.�a . " `T�.�'i:.. �,, °, S« �t...�`G.�'i 'tF "4'�r..��ti�.7r 3�.... r _ 3y Ti?i h .�a .4. ..-F v� .2:. m+ r " :X« -r + ,data,,`..: s: K f y �:. :"'� yy,i st;'f ._A.". `7 ' -..", �_lt�_ e ' ,fw � .--t=_"'� i :�• s trwi<. k . e . i : r la .J3ty�� a , - 1, :kt'f ' w-.� • r�. y'�Y -. �. ^`t�,,^" � ', rf Flow 64.0 MGD Continuous Recording 1 or E CBOD, 5-day (20°C)2 April 1- October 31 4.0 mg/L 6.0 mg/L Daily Composite E, CBOD, 5-day (20°C)2 November 1- March 31 8.0 mg/L 12.0 mg/L . Daily Composite E, Total Suspended Residue2 15.0 mg/L 22.5 mg/L Daily Composite E, I NH3 as N (April 1- October 31) 1.0 mg/L Daily Composite E NH3 as N (November 1-March 31) 1.9 mg/L Daily Composite E Dissolved Oxygen3 Daily Grab E, U, D Fecal Coliform (geometric mean) 200 / 100 ml 400 / 100 ml • Daily Grab E Total Residual Chlorine's 17 µg/L Daily Grab E Temperature (°C) Daily Grab E, U, D Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E Total Phosphorus5 Monthly Composite E Chronic Toxicitys Quarterly Composite E Conductivity Daily :Grab E, U, D Chromium 51 µg/L 204 µg/L :Weekly l ' Composite E Lindane Weekly 'Grab E Copper _ 2/Month Composite E, U, D Cyanides 5 µg/L 15 µg/L Weekly Grab E Lead 26 µgIL 34 µIL Weekly Composite E Silver 2/Month Composite E Zinc • 2/Month Composite E, U, D Mercury's 0.012 µg/L Weekly Composite E Molybdenum 2/Month Composite E Footnotes: 1 Sample Locations: E - Effluent, I - Influent, U - Upstream, D- Downstream. For instream monitoring requirements, see Part A.(3.). 2The monthly average effluent CBOD5 and total suspended residue concentrations shall not exceed 15% of the respective influent value. 3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L. 4 The daily average limit for total residual chlorine shall be 28 µg/ L. 5 See Part A.(5.). for additional nutrient monitoring information. 6 Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/ F at 90 %. Samples shall be taken quarterly during the months of March, June, September and December. See Part A.(4.). 7 The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to be "zero" for permit -compliance purposes only. 8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/1 shall be considered zero for compliance purposes. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NC0024970 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL During the period beginning on March 1, 2002 and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: rx M wx:� '' t, c. ;��i.ir`� } t_r:• V ' ' err,: 1 • .'¢.:�: ? - r'� _. t'fh-`} r: st .. ... �•. � }. � ! '• . a8.•�C��1 {jj{.sy ` .. ''9: ��, td� i rJ 7 .%_ r �...., S ','�. t F� . [ 2' 6 y y {. z�°F a`. .x. t "b 'i, z ''•''r; r�6 ",.`". i .. �a: tII x �aa ; t; j •y'x�Ff = .3'•tyy �� .tp,�u:. i i1 t r z..�:v � 'S f€.��! y .s�.: % ' .,...L£._�' -' > .. ��,. +.^31- � f F.i Ste.... t t, e1 � "" 4?c'� i�� d�� _ ;'�� 3G'x',�'f :F..b'i:' `' f � i `fi^ 11.T A,-.-'' 2 ti x.y(�da , M +'^.°. S;} t 4 c" ;Gif...pe '. 'E .r. a-:.�. � i �E�.N.�ik. If 4�:,�^,rw-'- C �•1.: y.s.'�. .,�,a •Ns'2i7� i.s�t � f'R��fSI - ..'`.: �N■ iR � ,, •r. � Yr -..-�i ®'^ .' � L a 4..r. T 4 i :'ri�' t "h�"� ' ' � ��C. �-y,�i' ... :iGs �7 :1�''' -I It N•k i:a ._f3 Ri4�'i=a:+ r^- .: 4M j`. �4 ' �. X •;z w.'L: = -z i]yy -':rt.3++`.uc� yr+C�la..h !j ".: - • A ` �i i1.' .° , f .. ,. b `�./�Y i ' `, . ' 7S'�' Cr a . •1./k ax' U j � .. f y ;• tea sr+ s r. �. s f •h ' ,. .- tl +- G cy-.. ^ � .Y,' �-1- �L. , �, p rH E� kaa" .. i.. y � i,k , 4,23U1 �� cr ,7•:{` 4 r np c 4 ,.,' .r. S„+,. .. 2f, 4 _ . z�;R,i'� �rA 11 .;,1 rr..-.(_. , _ �.. '! Flow 64.0 MGD Continuous Recording I or E CBOD, 5-day (20°C)2 April 1- October 31 4.0 mg/L 6.0 mg/L Daily Composite E, I CBOD, 5-day (20°C)2 November 1- March 31 8.0 mg/L 12.0 mg/L Daily Composite E, Total Suspended Residue2 15.0 mg/L 22.5 mg/L Daily Composite E, I NH3 as N (April 1- October 31) 1.0 mg/L Daily Composite E NH3 as N (November 1-March 31) 1.9 mg/L Daily Composite E Dissolved Oxygen3 Daily Grab E, U, D Fecal Coliform (geometric mean) 200 / 100 ml 400 / 100 ml Daily Grab E Total Residual Chlorine4 17 µg/L Daily Grab E Temperature (°C) . Daily Grab E, U, D Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E Total Phosphorus5 . Monthly . Composite E Chronic Toxicity • Quarterly Composite . E Conductivity . Daily . _ Grab E, U, D Chromium • .. 51 µg/L 204 µg/L Weekly :.. Composite E Lindane _ . 0.01 µg/L Weekly.-:-.. ... . Grab E Copper :_. .._ .. 2/Month__. ..Composite E. U, D Cyanide? :. '.. .... 5 µg/L 15 µg/L Weekly = • 'Grab _• .. - E Lead • 26 µg/L' . 34jig/L Weekly Composite E Silver 2/Month Composite E Zinc 2/Month Composite E, U, D Mercurye 0.012 µg1L Weekly Composite E Molybdenum 2/Month Composite . E Footnotes: 1 Sample Locations: E - Effluent, I - Influent, U - Upstream, D- Downstream. For instream monitoring requirements, see Part A.(3.). 2 The monthly average effluent CBODS and total suspended residue concentrations shall not exceed 15% of the respective influent value. 3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L. 4 The daily average limit for total residual chlorine shall be 28 µg/L. s See Part A.(5.). for additional nutrient monitoring information. 6 Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/F at 90 %. Samples shall be taken quarterly during the months of March, June, September and December. See Part A.(4.). 7 The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to be "zero" for permit -compliance purposes only. 8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/ 1 shall be considered zero for compliance purposes. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NC0024970 A. (3.) INSTREAM MONITORING REQUIREMENTS PARAMETERS TO BE SAMPLED Parameter Dissolved Oxygen Temperature Frequency Type 1/wk (June - September), 1/mo. (October - May) 1/wk (June - September), 1/mo. (October - May) Location Grab IC, SC2, SC3, SC4, SC5, LSC1, MC1, MC2 Grab IC1, SC1, SC2, SC3, SC4, SC5, LSC1, MC1, MC2 Conductivity 1/wk (June - September), 1/mo. (October - May) Grab IC1, SC1, SC2, SC3, SC4, SC5, LSC1, MC1, MC2 pH Ammonia (NH3) 1/wk (June - September), 1/mo. (October - May) Grab Weekly (January - December) Grab Nitrate/Nitrite (NOX) Weekly (January - December) Grab Total Kjeldahl Nitrogen Weekly (January - December) Grab (TKN) SC5 SC5 SC5 SC5 Total Phosphorus (TP) Weekly (January - December) Grab SC5 Orthophosphate (PO4) Weekly (January - December) Grab SC5 Copper 1 / mo. (January December) Grab IC1, SC1, LSC1, LSC2, MC1, MC2 Cadmium Zinc 1/mo. (January - December) 1/mo. (January - December) Grab Grab MC1, MC2 IC1, SC1, LSC1, LSC2, MC1, MC2 SAMPLE LOCATIONS: Irwin Creek 1. Upstream of Irwin Creek WWTP (IC1) Sugar Creek 1. Downstream of the confluence of Irwin and Sugar Creeks at Yorkmont Road (SC1) 2. Downstream of the confluence of Irwin and Sugar Creeks at Arrowwood Road (SC2) 3. Downstream of the confluence of Irwin and Sugar Creeks at Nations Ford Road (SC3) 4. Downstream of the confluence of Irwin and Sugar Creeks at Route 51 (SC4) 5. Downstream of McAlpine and Sugar Creeks confluence at Route 160 (SC5) Little Sugar Creek 1. Upstream of Sugar Creek WWTP (LSC1) 2. Downstream of Sugar Creek WWTP at Archdale Road (LSC2) McAlpine Creek 1. Upstream of Discharge (MC1) 2. Downstream of the confluence of McMullen and McAlpine Creeks at SC 2964 (MC2) Upstream and downstream samples shall be grab samples. Instream sampling should continue to be coordinated to reduce redundant sampling for the CMUD-McAlpine Creek, Sugar Creek, and Irwin Creek wastewater treatment facilities. It is recommended that monitoring be conducted during the same day or on consecutive days. Instream monitoring requirements for Irwin Creek, Sugar Creek and McAlpine Creek WWTPs are identical. All instream monitoring data will be submitted with the Discharge Monitoring Report (DMR) data for McAlpine creek WWTP. Please refer to McAlpine Creek WWTP DMR data for any instream monitoring data pertaining to Irwin Creek, Sugar Creek and/or McAlpine Creek WWTPs. Permit NC0024970 A. (4.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90%. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed during the months of March, June, September, and December. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised - February 1998) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR -I) for the months in which tests were performed, using the .parameter code TGP3B for the pass/fail results .and THP3B for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address: Attention: North Carolina Division pf Water Quality Environmental Sciences Branch 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality 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 document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. • Permit NC0024970 A. ( 5.) NUTRIENT STUDY The South Carolina Department of Health and Environmental Control (SC DHEC) has determined that Fishing Creek Reservoir, Cedar Creek Reservoir and Lake Wateree are impaired due to excessive nutrient loads and algal response to discharges upstream of these lakes. The Catawba River Basinwide Water Quality Plan (December 1999) states that a TMDL will be developed to address the causes and sources of impairment in these South Carolina lakes. SC DHEC has proposed the development of a phosphorus TMDL and is planning to limit phosphorus for all South Carolina NPDES dischargers with flows greater than 50,000 gallons per day. Significant discharges of phosphorus have also been linked to the North Carolina portion of the Fishing Creek Reservoir watershed. Estimates indicate that a significant portion of the total phosphorus load comes from the Sugar Creek Subbasin. To work towards reduction of this load, CMUD shall provide the Division with a study that fully investigates the feasibility of reducing total phosphorus (TP) load at this WWTP. The target TP load should be equivalent to a TP concentration of 1 mg/L at the effluent. This condition should not be construed as a permit limit. However, a limit may be imposed once the TMDL has been completed and an implementation plan is developed. The optimization study should include the following: • An identification of significant sources of pollution in the system. • An evaluation of ways in which these sources can be reduced or eliminated. • The possibility of reducing influent flows to the WWTP to control mass loading to the stream. • An assessment of the current treatment processes and ways in which this may be optimized to achieve a higher level of treatment. • A plan to optimize the current treatment system to achieve a higher level of nutrient removal. • An evaluation of additional treatment units required to achieve higher nutrient removal. The optimization study should be completed by February 1, 2002, and submitted to the following address: • -Nor-th:Carolina Division of Water Quality E-- Water. Quality Section/NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617