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HomeMy WebLinkAboutNC0004961_Site Visit_20170404loam Yµ' Wetter Resources ENVIRONMENTAL GtVttUTY April 4, 2017 Mr. Ronnie Goodman, Superintendent Power Generation. Operations/Plant Demolition Duke Energy Carolinas. LLC Riverbend Steam Station 175 Steam Plant Road Mount Holly, NC 28120 Dear Mr. Goodman: ROY COOPER Governor MICHAEL S. REGAN Secretary S. JAY ZIMMERMAN. . Director RIERCEIV EDI NCO EUDWR APR 10 2017 watel Qua;:ity PaTirfl agsaWoID Subject: Compliance Evaluation Inspection Riverbend Steam Station NPDES Permit No: NC0004961 Gaston County Enclosed is a copy of the Compliance Evaluation Inspection for the inspection conducted at the subject facility on March 30, 2017, by Ori Tuvia and Brandy Costner. Richard Massey's cooperation during the site visit was much appreciated. Please advise the staff involved with this NPDES Permit by forwarding a copy of the enclosed report. ..The report should be self-explanatory; however, should you have any questions concerning this report, please do not hesitate to contact Ori Tuvia at (704) 235-2190, or at ori.tuvia@ncdenr.gov. Sincerely, Ori Tuvia, Environmental Engineer Mooresville Regional Office Division of Water Resources, DEQ Cc: 'NPDES Unit Gaston County Health Department MRO Files Richard Massey (E -Copy) Mooresville Regional Office Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115 Phone: (704) 663-16991 Fax: (704) 663-60401 Customer Service: 1-877-623-6748 United States Environmental Protection Agency Form Approved. t FA Washington, D.C. 20460 OMB No. 2040-0057 Water Comp iancejCtS Bt tlOt1.R2POtt_,a r _ _ . Approval expires8-31-98 Section A: National Data System Coding (.e., PCS) Transaction Code NPDES yr/molday Inspection Type Inspector Fac Type 1 -I-�� � 2 �� � 3"1 LJ LJ I NCD004961 111 12 17/03!30 - IT .. _ 16 .19 1S 201 1 211.111111111111 1111111111111.111111111-111111r6 Inspection Work Days Facility Se&Monitoring Evaluation Rating B1 QA Reserved 67 110 70 ?1 I., I 72 �, a 73 �74 751 1 1 1 1 1 1 180 JData L�1 Section B: Facility Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10:OOAM/7/03130 16103f01 Riverbend Steam Station Exit Time/Date Permit Expiration Date - NG Hwy 16 Mount Holly NG 28120 03:30PM 17103!30 20102129 Narne(s) of Onsite Representative(syTittes(syPhone and Fax Number(s) Other Facility Data X. Richard S Massey/ORCR04-263-3202/ Name, Address of Responsible Oficial/T tle/Phone and Fax Number Contacted Brian Kemp,175 Steam Plant Rd Mt Holly NC 28120//864-398-2668f No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement ' Operations & MaintenancE Records/Reports Self -Monitoring Program Sludge Handling Disposal Facility Site Review EffluentlReceiving Waters Laboratory Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of inspectors) Agency/Office/Phone and Fax Numbers Date Ori A Tuvia iviRO WO/17D4.663-1699/ - q/7 Signature of Management Q A Reviewer Agency/OfficelPhone and Fax Numbers Date ` W. Corey Basinger MRO WQ/1704-235-21941 EPA Form 3560-3 (Rev 9-99) Previous editionsare obsolete. t Page# 1 NPDES yr/mo/day Inspection Type 1 31 NCO004961 11 12I 17/03/30 117 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Brandy Costner co -inspector. Attached a flow diagram with a detailed breakdown of the ash basin dewatering treatment unit. Page# 2 Permit: NCO004961 Owner -Facility: Riverbend Steam Station Inspection Bate: 03/3012017 Inspection Type: Compliance Evaivati0n Permit Yes No NA NE (if the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ ❑ application? Is the facility as described in the permit? ; M ❑ ❑ ❑ _ . # Are there any -special cpnditions tir_thor permit? ■ ❑ 13 ❑. _ - Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? M ❑ 110 ` Comment: The subject permit expires on 212912020. The facility has been shut down since March 2013. Duke Ener-gy is proar'essina towards the closure of the ash basins and demolishing the plant infrastructure within the next few years. Duke Eneray is in the process of dewaterina the ash basins. The facility is classified as a PC -1 but should be classified as PC -2. Record Keepina Yes No NA NE Are records kept and maintained as required by the permit? M ❑ ❑ 11 Is all required information readily available, complete and current? ` ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? ❑ ❑ ❑ M Are analytical results consistent with data reported on DMRs? ❑ ❑ ❑ Is the chairs -of -custody complete? ❑ ❑ ❑ Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported CDCs . Are DMRs complete: do they include all permit parameters? ` ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ M ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 2417 with a certified operator ❑ ❑ M ❑ on each shin? Is the ORC visitation log available and current? M ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? ❑ ❑ ❑ Is the backup operator certified at one .grade less or greater than the facility classification? M ❑ ❑ ❑ Is a copy of the current.NPDES permit available on site?A ❑ ❑ ❑ Facility has copy of previous year's,Annual Report on file for review? ❑ ❑ ■. ❑ Page# 3 Permit: NC0004964 Owner - Facility: tbverbend Steam Station inspection Date: 03/30/2097 Inspection Type: ComplianceEvatuation RBCord Keeplilg Yes No NA NP-"- Comment: The records reviewed durina the inspection were organized and well maintained. DMRs. COCs ORC togs and calibration loan were reviewed for the period. March 20'16 through February 2017. No flow from outfalss 001, 002A seep 1. seep 3. seep 5, seep 6, seep 7. seep 9, seep 10, seep 11 and seep 12. Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? ■ ❑ ❑ ❑ Are all other parameters(excluding field parameters) performed by a certified lab? ` ❑ ❑ ❑ # Is the facility using a contract lab? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ■ ❑ ❑ ❑ Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? ❑ ❑ ■ ❑ Incubator (BOD),set to 20.0 degrees Celsius +/-1.0 degrees? ❑ ❑ ■ ❑ Comment: The facility is certified to perform on-site field analyses (PH and temperature) under laboratory certification #5157. Duke Enemy's Environmental Services Laboratory (Certification #248) and contracted Labs ETS, Inc. ftoxicitv), PACE (Sample collection.from sees and trubid and Prism Effluent discha a collection are used for analytical support. Effluent Sampling Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type representative)? Comment: The subject permit requires effluent arab samples. Operations & Maintenance Is the plant generally clean with acceptable housekeeping? Does the facility analyze. process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge Judge, and other that are applicable? Yes No NA NE Yes No NA NE ■ ❑ ❑ ❑ ❑❑■❑ Comment: Ash in the ash stack is currently being removed and transported using rail system to transport the ash to a permitted site in Moncure North Carolina. Equalization Basins Yes No NA NE Is the basin aerated? ❑ ❑ ■ ❑ Page# 4 Permit: NG0004961 Inspection Date: 03130/2097 Eaiializatian Basins Owner -Facility: Riverbend Steam Station Inspection Type:. Compliance Evaluation Is the basin free of bypass lines or structures to the natural environment? Is the'basin free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Are audible and visual alarms operable? # Is basin size/volume adequate? Yes No NA NE ■ ■ No ■ ■ ■ 0 ■ ■ ■ M ■ ■ ■ ❑ ■ ■ ■ M ■ ■ ■ M ■ ■ ■ No Comment: The facility is in the process of building an EQ basin used to ensure study flow into the treatment plant. The EQ basin will also be the source of backflow of residual solids in the treatment process (supemate). The ash pond was used at the time of the inspection as the source of influent and the destination of residual solids. Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ ❑ ❑ ❑ Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ❑ Comment:- ©ischarge from the permitted outfall and seeps did not appear to negatively impact the stream. Page# 5 Step 1 Oxidation and Stec 2: Primary Step 3: Chemical Step 4: Secondary pH Adjustment Clarification . Reactions Clarification. Adding oxygen to the water helps Ash and metals that are Dissolved contaminants, like New solids formed in Step 3 settle to the the treatment process work better and remove contaminants already in solid form are removed from the water by arsenic and mercury, react with chemicals to form solids that may bottom of the clarifier and are removed. (selenium) are extremely sinking to the bottom of the conducted to ensure the and demonstrated to be efficiently. pH clarifier. be removed." rnrn Ash Pond Influent Step 6: Initial Step 6: Enhanced Step 7: Final Stea 8: Step 9: Filterina . Treatment Filtering Holdina Tank `Discharge The water is passed through a Some contaminates The water is passed Additional testing is After testing is complete sand filter to remove contaminates (selenium) are extremely through a fine screen conducted to ensure the and demonstrated to be that did not settle in previous difficult to remove and require filter to remove any water has been properly safe for the treated. environment, aquatic steps. a special enhanced treatment. remaining small particles. life, and the community, River the water will be safely ., released to the river.