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HomeMy WebLinkAboutNC0040908_Permit (Issuance)_20131223 NPDES DOCYNENT SCANNING COVER SHEET NPDES Permit: NC0040908 Tabernacle Elementary School Document Type: , Permit Issuance iWasteload Allocation Authorization to Construct (AtC) ■ Permit Modification Speculative Limits Complete File - Historical Instream Assessment (67B) Environmental Assessment (EA) Permit History Document Date: December 23, 2013 1 This document is priazted on reuse paper-igiaore a.ny coateat on the reverse aide NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder John E. Skvarla, III Governor Director Secretary December 23, 2013 Mr. Larry T. Chilton Randolph County Board of Education 2234 B Enterprise Street Asheboro,North Carolina 27205 Subject: NPDES PERMIT ISSUANCE Permit Number NCO040908 Tabernacle Elementary School WWTP - Class I Randolph County Dear Mr. Chilton: Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached final NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). If any parts, measurement frequencies or sampling requirements contained in this permit 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 in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699- 6714). Unless such demand is made, this permit shall be final and binding. Please take notice that this permit is not transferable. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Resources or permits required by the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local governmental permits which may be required. If you have any questions or need additional information, please do not hesitate to contact Maureen Kinney of my staff at(919) 807-6388. Sincerely, /IBC �U Thomas A. Reeder cc: Central Files NPDES Unit Files Winston-Salem Regional Office, Surface Water Protection Section 1617 Mail Service Center,Ralegh,North Carolina 27699-1617 Location:512 N,Salisbury St.Raleigh,North Carolina 27604 Phone:91 M07-6300\Fax:919-807-6492 Internet::www.ncwaterguality.org An Equal Oppocunity'Af rmalive Action Employer Permit NCO040908 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, the Randolph County Board of Education is hereby authorized to discharge wastewater from a facility located at the Tabernacle Elementary School WWTP 4901 Tabernacle School Road Asheboro Randolph County to receiving waters designated as Caraway Creek in subbasin 03-07-09 of the Yadkin-Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective February 1, 2014. This permit and authorization to discharge shall expire at midnight on January 31, 2019. Signed this day December 23, 2013. T o as A. Reeder, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 6 Permit NCO040908 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. The Randolph County Board of Education is hereby authorized to: 1. Continue to operate an existing 0.01 MGD wastewater treatment facility with the following components: • 12,000-gallon septic tank • 10,000-gallon grease trap (kitchen) • 10,000-gallon distribution tank • Recirculating sand filter • Ultraviolet disinfection This facility is located at the Tabernacle Elementary School WWTP (4901 Tabernacle School Road) near Asheboro in Randolph County. 2. Discharge from said treatment works at the location specified on the attached map into Caraway Creek, currently classified C waters in subbasin 03-07-09 of the Yadkin-Pee Dee River Basin. Page 2 of 6 Permit NCO040908 PART A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit 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: EFFLUENT' L11%&TS " MONITORING'REQUIREMENTS CHARACTERISTICS t , +Monthly ' batty Measurement Sample Sample Parameter Code �,Avera c . s Maximum Fre d"enc • ,: _ Tye , . "�,..Loc'ation . Flow 0.01 MGD Weekly Instantaneous Influent or 50050 Effluent HOD, 5-day(20°C) 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent C0310 Total Suspended Solids 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent C0530 NH3 as N Monthly Grab Effluent C0610 Dissolved Oxygen Daily Average>6.0 mg/L Weekly Grab Effluent 00300 — Fecal Coliform(geometric mean) 200/100 ml 400/100 ml 2/Month Grab Effluent 31616 Temperature(°C) Weekly Grab Effluent 00010 pH > 6.0 and<9.0 2/Momh Grab Effluent 00400 1 Standard Units Footnote: 1. No later than 90 days from the effective date of this permit, begin submitting discharge monitoring reports electronically using NC DWR's eDMR application system. See Special Condition A.(2.). THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Page 3 of 6 Permit NC0040908 A. (2.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such submittals, then permittees must submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these regulations will be adopted and is beginning implementation in late 2013. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits): • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E. (5.) Monitoring Reports 1. .Reportin2 [Supersedes Section D. (2.) and Section E. (5.) (a)1 Beginning no later than 90 days from the effective date of this permit, the permittee shall begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DENR/ DWR/Information Processing Unit ATTENTION: Central Files/eDMR 1617 Mail Service Center Raleigh, North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in writing to the Division for written approval at least sixty(60) days prior to the date the facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the permittee re-applies for and is granted a new temporary waiver by the Division. Page 4 of 6 Permit NC0040908 Information on eDMR and application for a temporary waiver from the NPDES electronic reporting requirements is found on the following web page: http://portal.ncdenr.ore/web/wq/admin[bog/ipu/edmr Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. 2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1 All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (I I!)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I L)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.or web/wq/admin/bog/ipu/edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: V certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. 1 am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 3. Records Retention [Supplements Section D.(6.)] The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.41]. Page 5 of 6 - ,�I{�� , ,�'i � —� -,t(�J 1 -!gib' rid• 4 ,��I, -s'�" �� �,�. ``�'� rl��--) � , �� �` 'I U 1,6 00 rl �JL .� ..-.�I: A�e.' r �� \. �, ��, 1 �`' � , -�) � i\ L�\�\\ l I.�q���,\\ '�I •fl � \I� ° (11\ f (I< 44 l 11•w1S� �,` S1)) 177- a i f/ Il ... .� Iyl I J \- (I.{1ry`1 +t, y }.1\• , !I •\; rf Y,l a --' - 1 � � II 'll\ 11 '�^---' �.I,J� l} '� •o o Z o LL "f �rr ��� r` y r ��r nF_. 1��,` i•.•�� 1; 1�1� ��` �'i ; If 1 J Fo ,� • i �.�n.r"' }�YII NI I t z vo _ _ 1 1 '� �VI dL �( .I• 5 -i ! ,�}'Z, C \ Q ^p o 71 LLI ��1>1! ���y�;-�� ,11f(''�.ti r/!jro`0� I'� ���a ���I�I I �I .�•j• � � '� k�1\I tl �,t'�'fl � L E m ? if V) v a 7 In ��z� '1 ��� � V �i F" J /J �< ��"'�I�I 1 r I I� i�` ` t•�I A l r C jl` /1 �` ""."�„ C 41 u � ro ��7/f �-1 �1 r h� �-•'^�� �7J���',II I�� A' �i�7 �t�- lil� f `�;` � �I °a., � >� V a, a „ a .^ Q� Ig'l )`i �I 1 ` r t. � )II J� 1'� � ~ I t ,. —..w"'�,�• � � � Pn m �;'n✓ji YA�,1 r Jr\ r�l I..J„ • ! t' S, I 11 111�t(I.1 { �`t t lln A tFr r 4,,. 4 f�C ~ d •r y �t, A' r, [ l.:l; /' i {--. n'. `t' F'o i1 J ) } k ` ��, i,l II'( ` 1 • ?1�' +.�).n.111i�y�.�»,�"/.>:-%il � Ln(�4`r�.y'}f�"A:, �YIS,� ilI ' ' '•�{F,{�.1� --\.,� 1�tj�tl�I�k M Public Notice North Carolina Environmental Management TEiE7. Commission/NPDES Unit LOUR 1z-TV"UNE 1617 Mail Service Center Raleigh, NC 27699-1617 Affidavit of Publication Notice of Intent to Issue a NPDES Wastewater Permit The North Carolina Environmental Management Commission proposes to issue a NPDES wastewater discharge permit to the person(s) listed below. Written comments regarding the proposed ;rate of North Carolina, permit will be accepted until 30 days after the publish date of this Randolph County notice. The Director of the NC Division of Water Resources (DWR) may hold a public hearing should there be a significant degree of public interest. Please mail comments and/or information requests to DWR at the above address. Interested persons may visit the To Whom It May Concern: DWR at 512 N. Salisbury Street, Raleigh, NC to review information on file. Additional information on NPDES permits and this notice This is to certify the may be found on our website: advertisement attached http://portal.ncdenr.org/web/wglswp/ps/npdes/calendar, or by calling hereto has been published in (919) 807-6390. Randolph County Schools applied for renewal of permit NCO076287 (Farmer Elementary School). This permitted The Courier Tribune facility discharges treated wastewater to the Uwharrie River; Yadkin- on the following dates: Pee Dee River Basin. Randolph County Board of Education has applied for renewal of NPDES permit NCO040908 for Tabernacle Elementary School WWTP. This permitted facility discharges treated domestic wastewater to Caraway Creek; Yadkin-Pee Dee River Basin. it 11/7/13 Swom to on this I day of W 2013 0, bkOP4 Courier-Tribune Representative Sworn to and Subscribed Before me this �_day of 2013 i Notary Public r My Commission Expires 08/02/16 F ina C. Mabeblic NorthCarolinandolph Courtlyommission Expires Kinney, Maureen From: Graznak, Jenny Sent: Wednesday, November 06, 2013 2:05 PM To: Kinney, Maureen Subject: RE: DRAFT Renewals: Randolph, Forsyth, Davidson & Davie Counties Hi Maureen, I just looked through the Farmer Elementary and Tabernacle Elementary draft permits. I didn't see any issues—don't really seem to be any changes from last permits besides the eDMR requirement. So no corrections or comments from ourend. Thanks. Jenny Graznak E-mail Address: lenny.gramak(ancdenr.eov NCDENR Division of Water Resources Winston-Salem Regional Office 585 Waughtown Street, Winston-Salem, NC 27107 (336)771-4960;fax(336)771-4630 www.ncwaterguality.org E-mail correspondence to and from this address may be subject to the North Carolina Public Records Caw and may be disclosed to third parties. From: Basinger, Corey Sent: Monday, November 04, 2013 2:20 PM To: Graznak, Jenny; Boone, Ron; Carter, Jenifer Cc: Mickey, Mike Subject: FW: DRAFT Renewals: Randolph, Forsyth, Davidson & Davie Counties Ron, Jen and Jenny, Please review and respond as necessary to the Draft renewals for Forsyth, Davidson and Randolph. Thanks. CB W. Corey Basinger Regional Supervisor Water Quality Regional Operations Winston-Salem Regional Office Division of Water Resources Email: corev.basineer@ncdenr.¢ov Phone: (336) 771-5000 Fax (336) 771-4630 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Kinney, Maureen Sent: Monday, November 04, 2013 2:12 PM 1 FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Maureen Kinney 11/1/2013 Permit Number NCO040809 Facility Name Tabernacle Elementary School WWTP Basin Name/Sub-basin number Yadkin-Pee Dee 03-07-09 Receiving Stream Caraway Creek Stream Classification in Permit C Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? Yes No Does permit have toxicity testing? Yes No Does permit have Special Conditions? Yes No—Electronic Reporting Requirement Does permit have instream monitoring? Yes No Is the stream impaired (on 303(d) list)? For Yes No whatparameter? Any obvious compliance concerns? No Any permit mods since lastpermit? No Current expiration date 1/31/14 New expiration date 1/31/19 Comments received on Draft Permit? WSRO reports a history of good housekeeping and compliance w/ ermit requirements. Please note the following modifications to this draft: • Parameter codes added to Section A.(l.) Effluent Limitations and Monitoring Requirements. • a requirement to begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to this draft. [See Special Condition A. (2.)] For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.org/web/wq/admin/boJipu/edin �� �, . RANDOLPN COUNTY 80At2D OF EDUCATION s 2234-B Enterprise St Asheboro, North Carolina 27205 Telephone: (336)318-6098 or 215-3835 FAX:(336)318-6079 Dr.Stephen Gainey Emait IchiltonlaZrandoloh.lvi2.nc.us Superintendent Larry T.Chilton Assistant Maintenance DirectodEnvironmental Manager NC DENR/DWQ/NPDES Unit, I am requesting renewal of the NPDES permit for Tabernacle Elementary School(NC0040908). There have been no changes to the system since issuance of the current permit. Effluent flow and sample results are well within limits with many"<" results reported from the laboratory. Our solids handling procedure is to have the septic tank pumped each summer when school is out or more frequently if there is an issue detected. If you have any questions don't hesitate to contact me. Thank You _ Larry T Chilton Assistant Maintenance Director/Environmental Manager Randolph County Schools Maintenance Dept. 336-318-6096 TOLL FREE NUMBERS Greensboro-Lihertyc 218-4W9IArchdals-Trinity Area:8193089 NPDES APPLICATION - FORM D For privately-owned treatment systems treating 100% domestic wastewaters <1.0 MGD Mail the complete application to: N. C. DENR / Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 NPDES.Permit C00 40 9 O g If you are completing this form in computer use the TAB key or the up— down arrows to move from one field to the next. To check the boxes, click your mouse on top of the box Otherwise,please print or type. 1. Contact Information: Owner Name ��do� I Coun �y l�oa rd e f Ed�cio�/ Facility Name Ta6erniac.)e E�ernen�f-ary ..S'e�,eo) Mailing Address '� 1� a F.v'f2rer�Sf�T City `jshe�Or'D State / Zip Code N C Telephone Number Fax Number (�36 )3/g - bo-79. e-mail Address /c�i -EeN rwda1/6("4 . k/,2 .le . US 2. Location of facility producing discharge: Check here if same address as above ❑ Street Address or State Road 4 q O 1 City 'q5/'P_Ler 0 State / Zip Code N C ,7010$— County 3. Operator Information: Name of the firm, public organization or other entity that operates the facility. (Note that this is not referring to the Operator in Responsible Charge or ORC) Name 2ZWLV( `ewv 3t n a,zrr cF G �/ca�i4M Mailing Address aa3 13 rpr,�� City t4S ore o1/C State / Zip Code �a �7 aor Telephone Number (336 ) _3/9 — (v 0 9L Fax Number (31& )-3/9 - 4a79 e-mail Address �+-14O.t�c _� ,Q, I'wVd'a/dn. k-l.?,•niG• vS 1 of 3 Farm--D I V12 NPDES APPLICATION - FORM D For privately-owned treatment systems treating 100% domestic wastewaters <1.0 MGD 4. Description of wastewater: Facility Generating Wastewater(check all that apply): Industrial ❑ Number of Employees Commercial ❑ Number of Employees Residential ❑ Number of Homes School Number of Students/Staff 475 Other ❑ Explain: Describe the source(s) of wastewater (example: subdivision, mobile home park, shopping centers, restaurants, etc.): E/w�a� Sc1 ao/ — ees-trooms r K;+J red/ Number of persons served: 47 S 5. Type of collection system 19 Separate (sanitary sewer only) ❑ Combined (storm sewer and sanitary sewer) 6. Outfall Information: Number of separate discharge points Outfall Identification number(s) OO 1 Is the outfall equipped with a diffuser? ❑ Yes ®No 7. Name of receiving stream(s) JMW applicants:Provide a map showing the exact location of each outfall/: Carawa C'r-0.e.('. 8. Frequency of Discharge: ❑ Continuous tR Intermittent If intermittent: Days per week discharge occurs: s Duration: /5,30, ,'ms 11-6 i4«ef�da� 9. Describe the treatment system List all installed components, including capacities,provide design removal for BOD, TSS, nitrogen and phosphorus. if the space provided is not sufficient, attach the description of the treatment system in a separate sheet of paper. O. O/ m6o 6..c.5�7r�yj -ldrk"kl� Q£ciCLv%t'{ttN 1. SM/�y�b,j�h l� 2 of 3 Form D 11112 NPDES APPLICATION - FORM D For privately-owned treatment systems treating 100% domestic wastewaters <1.0 MGD 10. Flow Information: Treatment Plant Design flow 0.010000MGD Annual Average daily flOW0,00265A MGD (for the previous 3 years) Maximum daily flow 00 6 MGD (for the previous 3 years) 11. Is this facility located on Indian country? ❑ Yes No 12. Effluent Data NEW APPLICANTS:Provide data for the parameters listed.Fecal Coliform, Temperature and pH shall be grab samples,for all other parameters 24-hour composite sampling shall be used.If more than one analysis is reported, report daily maximum and monthly average. If only one analysis is reported, report as daily maximum. RENEWAL APPLICANTS: Provide the highest single reading(Daily Maximum)and Monthly Average over the past 36 months or parameters currentl in yaurpermit. Mark other parameters 'N/A'. Parameter Daily Monthly Units of Maximum Average Measurement Biochemical Oxygen Demand (BODs) q rN / Fecal Coliform Cf ulloomf Total Suspended Solids f q Iva A,,,,,y, <14 rH If Temperature (Summer) 30 -Z3.3 aC- Temperature (Winter) ,29 8 • 9 �C pH 7. `f6 N S.U• 13. List all permits, construction approvals and/or applications: Type Permit Number Type Permit Number Hazardous Waste (RCRA) NESHAPS (CAA) UIC (SDWA) Ocean Dumping(MPRSA) NPDES Ncoo4e9908 Dredge or fill(Section 404 or CWA) PSD (CAA) Other Non-attainment program(CAA) 14. APPLICANT CERTIFICATION I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. Larry T G'i�i(-Eon/ AS< s/cw{ M r/eux�:c�t�'c-tclur�E.,u�:ror.«w-k�l fy)". 'Jax- Printed—name of Person Siigni ng Title Siga#ure of Applicant Date North Carolina General Statute 143-215.6 (b)(2) stales: Any person who knowingly makes any false statement representation, or certification in any application,record, report, plan,or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,or by imprisonment not to exceed six months,or by both. (18 U.S.C.Section 1001 provides a punishment by a fine of not more than$25,000 or imprisonment not more than 5 years,or both,for a similar offense.) 3 of 3 Form-D 11112 Randolph County Schools Sludge Management Plan Tabernacle Elementary School (NC0040908) Farmer Elementary School (NC0076287) Coleridge Elementary School (NC0040975) Any sludge or solids from the septic tanks, along with grease from the grease traps, is pumped by our contracted septic pumper, currently Randy Cheek Septic Tank, Plumbing, & Backhoe Inc. Our wastewater technicians monitor the tanks and when needed they are pumped but no less than annually. Larry Chilton Assistant Maintenance Director/Environmental Manager