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HomeMy WebLinkAboutWI0500293_APPLICATION FOR PERMIT_20130807 Pli • North Carolina Department of Environment and Natural Resources APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION In Situ Groundwater Remediation (15A NCAC 02C.0225) I Tracer Injection (15A NCAC 02C.0229) Do not use this form for the following: • in situ remediation,tracer,or aquifer test injection wells permitted by rule(ref. 15A NCAC 02C .0217) • remediation systems that reinject treated contaminated groundwater(ref. 15A NCAC 02T.1600) Application Number(to be completed by DWQ): RECEIVED!DENRin`'I ALHH07 I. APPLICATION INFORMATIONA❑��� pp 1. Project is: [] New [ ] Modification [X] Renewal without modificattiidril er[P]rKen ewai whit modification 2. If this application is being submitted for renewal or modification to an existing permit,provide: existing permit number W10500293 and the issuance date 12/20/10 For renewal without modifications,fill out sections 1& II only, sign the certification on the last page of this form, and obtain the property owner's signature to indicate consent(if the applicant is not the owner). For all renewals, submit a status report including monitoring results of all injection activities to date. II. WELL OWNER(generally the responsible party) 1. Name: Orange County Solid Waste Management 2. Signing Official's Name*: Gayle Wilson Title: Director, OCSWM * Signing Official must be in accordance with instructions in Part IX on page 5. 3. Mailing address of applicant: P.O.Box 17177 City: Chapel Hill State: NC Zip: 27516 4. Telephone number: (919)968-2788 Email: gwilson@orangecountync.gov 5. Status (choose one): Individual Business/Org. Federal State County X Municipality HI. PROPERTY OWNER(if different than well owner) 1. Name: 2. Physical address: City: State: Zip: 3. Mailing address: City: State: Zip: 4. Telephone number: Email: IIIL PROJECT CONTACT—Person who can answer technical questions about the proposed injection project. 1. Name: II����eeiin nn Title: 2. Company: RECEtVED!nFI R!DWQ 3. Address: 4. City: State: Zip: 5. Telephone number: Aquifer Protection Section Email: Revised 10/8/2012 UIC-5115T Page 1 of 5 APPLICATION FOR PEA SIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION In Situ Groundwater Remediation I Tracer Injection V. FACILITY INFORMATION 1. Facility name: Ph#: 2. Mailing address: City: County: State:NC Zip: 3. Geographic Coordinates: Latitude: Longitude: Reference Datum: Accuracy: Method of Collection: 4. Brief description of business: VI. INCIDENT DESCRIPTION 1. Source and date of contamination: 2. List all contaminants present in soils or groundwater at the site(contaminants may be listed in groups, e.g.,gasoline, diesel,jet fuel,fuel oil, chlorinated ethenes, chlorinated ethanes, metals,pesticides/herbicides, etc): 3. Has LNAPL or DNAPL ever been observed at the site(even if outside the injection zone)? []Yes If yes, list maximum measured separate phase thickness: feet []No If no, list maximum concentration of total VOCs observed at site: ppb 4. Agency managing the contamination incident: []UST Section [] Superfiind Section(including REC Program and DSCA sites) []DWQ Aquifer Protection Section [] Solid Waste Section []Hazardous Waste Section [] Other: 5. Incident manager's name: Ph#: - 6. Incident number or other incident mgmt. agency tracking number: VII. PERMITS List aII applicable permits or construction approvals issued for the facility or incident: 1. Hazardous Waste Management program permits under RCRA: 2. DWQ Non-Discharge or NPDES permits: 3. County or DEH subsurface wastewater disposal permits: 4. Other environmental permits required by state or federal law: Revised 10/8/2012 L71C-5I/5T Page 2 of 5 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELLS)FOR INJECTION In Situ Groundwater Remediation I Tracer Injection VIII. ATTACHMENTS — provide the following information in separate attachments. The attachments should be clearly identified and presented in the order below to expedite review of the permit application package. 1. INJECTION ZONE—Per i5A NCAC 02C .0225(e1(2) specify the horizontal and vertical portion of the subsurface within which the proposed injection activity will take place and beyond which no violations of groundwater quality standards shall result from the injection as determined by an approved monitoring plan. The determination shall be based on the hydraulic properties of the specified zone. Provide any supporting documentation in a separate attachment. 2. HYDROGEOLOGIC EVALUATION — Per I5A NCAC 02C .0225(e)(3) provide a hydrogeologic evaluation of the injection zone that includes all of the following: (A) Regional and Iocal geology and hydrology; (B) Changes in lithology underlying the facility; (C) Depth to bedrock; (D) Depth to the mean seasonal high water table; (E) Hydraulic conductivity, transmissivity, and storativity, of the injection zone based on tests of site-specific material, including a description of the test(s)used to determine these parameters; (F) Rate and direction of groundwater flow as determined by predictive calculations or computer modeling; and (G) Lithostratigraphic and hydrostratigraphic logs of any existing test and injection wells. 3. INJECTANT INFORMATION — Per 15A NCAC 02C .0225(e)(5) list each injectant in the space below and provide the following information for each injectant. NOTE: Approved injectants can be found online at http://portal_ncdenr.org/web/wq/aps/gwpro. All other substances must be reviewed by the Division of Public Health, Department of Health and Human Services. Contact the UIC Program for more information (Ph#919-807-6496). (A) MSDS, concentration at the point of injection, and percentage if present in a mixture with other injectants; (B) The source of fluids used to dilute, carry, or otherwise distribute the injectant throughout the injection zone. If any well within the area of review of the injection facility is to be used as the fluid source, then the following information shall be submitted: location/ID number, depth of source, formation, rock/sediment type, and a chemical analysis of the water from the source well, including analyses for all contaminants suspected or historically recognized in soil or groundwater on the site; (C) A description of the rationale for selecting the injectants and concentrations proposed for injection, including an explanation or calculations of how the proposed injectant volumes and concentrations were determined; (D) A description of the reactions between the injectants and the contaminants present including specific breakdown products or intermediate compounds that may be formed by the injection; (E) A summary of results if modeling or testing was performed to investigate the injectant's potential or susceptibility for biological, chemical, or physical change in the subsurface; and (F) An evaluation concerning the development of byproducts of the injection process, including increases in the concentrations of naturally occurring substances. Such an evaluation shall include the identification of the specific byproducts of the injection process, projected concentrations of byproducts, and areas of migration as determined through modeling or other predictive calculations. 4. INJECTION PROCEDURE — Per 15A NCAC 02C .0225(e)(6) submit a table with a detailed description of the proposed injection procedure that includes the following: (A) The proposed average and maximum daily rate and quantity of injectant; (B) The average maximum injection pressure expressed in units of pounds per square inch(psi); and (C) The total or estimated total volume to be injected. Revised 10/8/2012 UIC-5I/5T Page 3 of 5 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION In Situ Groundwater Remediation I Tracer Injection 5. FRACTURING PLAN (if applicable)—Per 15A NCAC 02C.0225(e)(7) submit a detailed description of the fracturing plan that includes the following: (A) Material Safety Data Sheets of fracturing media including information on any proppants used; (B) a map of fracturing well locations relative to the known extent of groundwater contamination plus all buildings, wells, septic systems, underground storage tanks, and underground utilities located within the Area of Review; (C) a demonstration that buildings, wells, septic systems, underground storage tanks, and underground utilities will not be adversely affected by the fracturing process; (D) injection rate and volume; (E) orientation of bedding planes,joints,and fracture sets of the fracture zone; (F) performance monitoring plan for determining the fracture well radius of influence; and (G) if conducted, the results of geophysical testing or pilot test of fracture behavior conducted in an uncontaminated area of the site. 6. WELL CONSTRUCTION DETAILS — Per 15A NCAC 02C .0225(e)(8) submit the following information in tabular or schematic form as appropriate for each item: (A) number and depth of injection wells; (B) number and depth of borings if using multi-level or"nested"well systems; (C) indication whether the injection wells are existing or proposed; (D) depth and type of casing; (E) depth and type of screen material; (F) depth and type of grout; (G) indication whether the injection wells are permanent or temporary"direct push"points; and (H) plans and specifications of the surface and subsurface construction details. 7. MONITORING PLAN—Per I5ANCAC 02C.0225(4(9) submit a monitoring plan that includes the following: (A) target contaminants plus secondary or intermediate contaminants that may result from the injection; (B) other parameters that may serve to indicate the progress of the intended reactions; (C) a list of existing and proposed monitoring wells to be used;and (D) a sampling schedule to monitor the proposed injection. Monitoring wells shall be of sufficient quantity and location to detect any movement of injection fluids, injection process byproducts, or formation fluids outside the injection zone. The monitoring schedule shall be consistent with the proposed injection schedule,pace of the anticipated reactions, and rate of transport of the injectants and contaminants. 8. WELL DATA TABULATION—Per 15A NCAC 02C.0225(e)(101 provide a tabulation of data on all existing or abandoned wells within the area of review of the injection well(s) that penetrate the proposed injection zone, including monitoring wells and wells proposed for use as injection wells. Such data shall include a description of each well's type, depth, and record of construction or abandonment. 9. MAPS AND CROSS-SECTIONS — Per 15A NCAC 02C .0225(e)f 1 I) provide scaled, site-specific site plans or maps depicting the location,orientation, and relationship of facility components including the following: (A) area map based on the most recent USGS 7.5' topographic map of the area, at a scale of 1:24,000 and showing the location of the proposed injection site; (B) topographic contour intervals showing all facility related structures, property boundaries, streams, springs, lakes, ponds,and other surface drainage features; (C) all existing or abandoned wells within the area of review of the wells listed in the well data tabulation that penetrate the proposed injection zone; (D) potentiometric surface map(s)that show the direction of groundwater movement,existing and proposed wells; (E) contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the contaminant plume in soil and groundwater, and existing and proposed wells; (F) cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical extent of the contaminant plume in soil and groundwater, major changes in lithology, and existing and proposed wells; and (G) any existing sources of potential or known groundwater contamination, including waste storage, treatment, or disposal systems within the area of review of the injection well or well system. Revised 10/8/2012 UIC-51/5T Page 4 of 5 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION In Situ Groundwater Reniediation I Tracer Injection IX. CERTIFICATION* (to be signed as requited below or by that person's authorized agent*) NCAC 15A 02C .0211(e)requires that all permit applications shall be signed as follows: 1. for a corporation: by a responsible corporate officer 2. for a partnership or sole proprietorship: by a general partner or the proprietor, respectively 3. for a municipality or a state, federal, or other public agency: by either a principal executive officer or ranking publicly elected official 4. for all others: by the well owner. *If an authorized agent is signing on behalf of the applicant,then supply a letter signed by the applicant that names and authorizes their agent. "1 hereby certify under penalty of law that I have personally examined cmcl am familiar with the i►formation submitted in this document and all attachments therein, and that, based on my inquiry of those individuals immediately responsible for obtaining said information, I believe that the information is true, accurate, and complete. I am aware that there are penalties, including the possibility offines and imprisoment,for submitting false information. I agree to construct, operate, maintain, repair, and if applicable, abandon the injection well(s) and all related appurtenances in accordance with the approvedspecifications and conditions of the Permit." Printed Name and Title: G Le ,t So,•l DINe fi®t. M Signature: Date: r -- �o 13 19 X, CONSENT OF PROPERTY OWNER(if the property is not owned by the permit applicant) "Owner" means any person who holds the fee or other property rights in the well being constructed. A well is real property and its construction on land shall be deemed to vest ownership in the land owner, in the absence of contrary agreement in writing. "As owner of the property on which the injection well(s)are to be constructed and operated, I hereby consent to allow the applicant to construct each injection well as outlined in this application and agree that it shall be the responsibility of the applicant to ensure that the injection well(s)conform to the Well Construction Standards (I5A NCAC 02C.0200)." AUL: U 7 2CiL. Printed Name and Title: Aquifer Protection Section Signature: Date: Submit TWO copies of the completed application package, including all attachments, to: DWQ - Aquifer Protection Section 1636 Mail Service Center Raleigh,NC 27699-1636 Telephone(919)807-6464 Revised 1 0/8/20 t 2 LUC-5I/5T Page 5 of 5 Draper Aden Associates MEMORANDUM Nief' Engineering • Surveying • Environmental Services 8090 Villa Park Drive Richmond,Virginia 23228 (804)264-2228 • Fax(804)264-8773 www.daa.com TO: Mr. Thomas Slusser RECEIVEOIDENRIr NCDENR—DWQ -APS AUG Q FROM: Joel C. Daniel,PG 9-CV Aquifer Protection Secliui l Environmental Services DATE: 08-01-13 SUBJECT: Orange County Regional Landfill: North (Closed) Facility Groundwater Monitoring Program Assessment of Underground Injection Program Activities NC Permit No. 68-01 DAA Project No. R00592-136 On behalf of Orange County Solid Waste Management (OCSWM), Draper Aden Associates (DAA) is submitting to NCDENR — Division of Water Quality — Aquifer Protection Section an assessment of the underground injection program activities. This submittal is in partial fulfillment of renewing the facility's Underground Injection Permit (WI0500293). 1.0 INTRODUCTION The current injection permit allowed for the construction of four groundwater injection wells at the reference facility, as shown on FIGURE 1. OCSWM constructed two of the injection wells (INJ-A, INJ-B) during March, 2011. The purpose for constructing these two wells at the time was to begin remediating contaminated groundwater that was in close proximity to the facility's eastern boundary, while an active landfill gas extraction system removed VOCs from the waste mass. OCSWM had the option of constructing the remaining two injection wells (INJ-C, INJ-D) in the future if deemed necessary. 2.0 INJECTION PROGRAM On behalf of OCSWM, DAA has procured potassium permanganate from Univar Corporation, a distributor for Carus Corporation (manufacturer). OCSWM has performed four injection events since the construction of the two injection wells. The injections involved mixing and injecting potassium permanganate, on the dates (and in quantities) shown below: Blacksburg, Virginia • Charlottesville, Virginia • Hampton Roads, Virginia • Richmond, Virginia Mr. Thomas Slusser August 1,2013 Page 2 of 2 • March 29, 2011 (120 gallons total) • September 28, 2011 (250 gallons total) • April 14, 2012 (300 gallons total) • September 13, 2012 (300 gallons total) 3.0 GROUNDWATER MONITORING DATA In accordance with the Underground Injection Permit, OCSWM has performed quarterly monitoring of wells MW-21 S, MW-21D, MW-23, and MW-24. These four wells are located downgradient of the two current injection wells (FIGURE 1). The sampling parameters have included volatile organic compounds (VOCs), potassium, manganese, chloride, mercury, carbon dioxide, and oxidation-reduction potential (ORP). The attached tables present the results of groundwater sampling for the four listed wells. The concentrations of total VOCs in wells MW-21S, MW-21D, MW-23, and MW-24 have decreased since the initiation of the injection program. FIGURE 1 includes isoconcentration contours of total VOCs,based on data from wells MW-21S,MW-21D, MW-23, and MW-24. FIGURE 2 and FIGURE 3 are geologic cross-sections with isoconcentration contours shown. Comparisons with the previous cross-sections included in the Underground Injection Permit Application show appreciable decreases in the extent of the VOC plumes. FIGURES 4— 7 are graphs that show the changes in total VOC concentrations over time for wells MW-21S, MW-21D, MW-23, and MW-24, respectively. Included on the graphs are trend lines, all of which show decreasing concentrations since the initiation of the injection program. 4.0 CONCLUSIONS Based on the groundwater monitoring data obtained from wells MW-21S, MW-21D, MW-23, and MW-24, the injection program appears to be having a positive effect on diminishing the concentrations of VOCs in the vicinity of these wells. The continuation of the injection program, coupled with the anticipated declines of VOCs within the waste mass due to the active landfill gas extraction system, should continue to diminish the VOC concentrations in groundwater at the facility. ATTACHMENTS: Figures 1 -7 NOTES: 500 J - -500 A 1. SUBSURFACE CONTACTS ARE BASED ON A' WIDELY-SPACED DATA POINTS,AND ACTUAL SUBSURFACE CONDITIONS MAY VARY FROM THOSE SHOWN. CONTACTS ARE DASHED WHERE INFERRED. 2. STRATIGRAPHY IS GENERALIZED AS FOLLOWS: 490 \ tC) — 490 SOILS-RED-BROWN,SILT TO SILTY CLAY SAPROLITE-WHITE,TAN,LIGHT BROWN, ORANGE,SILT,SANDY SILT, ` In SAND;SOME DECOMPOSED N d ROCK FRAGMENTS 480 1 —� n1 480 BEDROCK-GRAY,GRAY-GREEN,BLUE-GREEN, FRACTURED,PIIYLLITE TO GREENSTONE ,� r y �- SOlt. 3. POTENTIOMETRIC SURFACE IS BASED ON WATER LEVELS _ --;����. �r..�a-- COLLECTED DURING MAY 13-15,2013. 470 - -__- -- -�---- -470 4. TOTAL VOC PLUME CONCENTRATIONS ARE BASED ON _ r ONE SAMPLING EVENT(MAY,2013),AND ARE IN UG/L(PPB). = - - I i� _ BECI 20CK = II = - 50 460 - _ - w 460 5() = W 450 1� a ! 450 O. i '7 o o _ W = f W 440 00 � . r _ 440 W ch rr VERTICAL SCALE: 430 3 430 1 m 1 inch = 10 feet N i HORIZONTAL SCALE: T. 420 I -420 1 inch = 100 feet 3 cr Q 0 N 1 45,...,k, Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION A-A' DRAWN OSS SECTION SCALE. AS SHOWN FIGURE Engineering • Surveying • Environmental Services J CC ORANGE COUNTY LANDFILL D F I L L 8090 Villa Pa Drive Blacksburg,VA CHECKED JCD 2 Richmond,FaxA23228 HampioCharlottesviole,VA DATE 714113 UNDERGROUND INJECTION PERMIT RENEWAL PROJECT: R00592-136 Sp4264 2228 Fax:804-264-8773 Hampton Roads,VA NOTES: CO r LJ B' w w Gt 1. SUBSURFACE CONTACTS ARE BASED ON _ C.) WIDELY-SPACED DATA POINTS,AND ACTUAL ` 0 J SUBSURFACE CONDITIONS MAY VARY FROM 490 - \, 490 THOSE SHOWN. CONTACTS ARE DASHED — W - WHERE INFERRED. \\ CZ ` 2. STRATIGRAPHY IS GENERALIZED AS FOLLOWS: ` _ — n I ~` —_1 SOILS—RED-BROWN,SILT TO SILTY CLAY y ' / \ SAPROLITE—WHITE,TAN,LIGHT BROWN, 480 ~--- ORANGE,SILT,SANDY SILT, ,— — ` �-- 480 �_ RACK FRAGMENTSDECOMPOSEDSAND;SOME 1 V `\_ 1 BEDROCK—GRAY,GRAY-GREEN,BLUE-GREEN, I _ — f! 1 FRACTURED,PH YLLITE TO GREENSTONE 1 ti� �— 470 '1 1 �470 3. POTENTIOMETRIC SURFACE IS BASED ON WATER LEVELS COLLECTED DURING MAY 13-15,2013. :� i 4. TOTAL VOC PLUME CONCENTRATIONS ARE BASED ON SOIL y y 41111 ONE SAMPLING EVENT(MAY,2013),AND ARE IN UG/L(PPB). / t t 460 _ BEDROCK = I yQIll s 1 460 i 4 W - 1 } -r - - 1 1 _ O450 = yi f 1 450 g — 1 \ I a E.IN. _ \ 1 1 s W \ = 10 N H 440 �� 440 i = i I LL, 430 - y 430 VERTICAL SCALE: I i C ` - inch = 10 feet HORIZONTAL SCALE: 420 — — - — - - —420 4 m - l 1 inch = 100 feet = a U g 410 —-- -- -- - -- 410 8 N a, Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION B-B' SHOWNFIGURE Engineering • Surveying • Environmental Services DRAWN JCD SCALE: AS 8090 Villa Park Drive Blacksburg,VA CHECKED JCD ORANGE COUNTY LANDFILL 3 Richmond,VA23228 Charlottesv>IIe,VA DATE 7/4/13 UNDERGROUND INJECTION PERMIT RENEWAL PROJECT: R00592-136 4 804-264-2228 Fax:804-264-8773 Hampton Roads,VA a Concentration (µg/1) N A Q) Q O O Q 05/28/92 11/15/95 02/25/97 0 05/04/98 04/26/99 0 2 05/23/00 — ♦ 41 c ♦ 06/05/01 • n 06/04/02 ♦ 0N O a a 06/18/03 ♦ ♦ (!) m CD ♦ .tl , 06/22/04 ♦ ♦ , o 06/01/05 ♦ = v ♦ 05/22/06 — ♦ 0. 06/12/07 — ♦ ♦ 06/17/08 ♦ 05/19/09 ± 06/21/10 ♦ • 05/23/11 ♦ 06/05/12 05/13/13 Concentration (µgII) Iv - rn 03 0 0 0 0 0 i — — I — — I - I - _ .I- I 05/28/92 11/15/95 • • 02/25/97 • • 0 05/04/98 • Et' •04/26/99 ♦ o `co 05/23/00 • ♦ go a) o 06/05/01 N . ♦ 0 -]r 06/04/02 ♦ 0 ro 2 Ni o m o a 94 06/18/03 ♦♦ ♦ p ~ cn 06/22/04 ♦ ♦ • v 2 o 06/01/05 on w• • ri 05/22/06 o. 06/12/07 ♦ • 06/17/08 05/19/09 • • 06/21/10 • • 05/23/11 ♦ ♦ 06/05/12 • . ). 05/13/13 Figure 6 Orange County Landfill - North Facility Injection Permit Renewal Total VOC Concentrations MW-23 160 ♦ • 120 D z o ♦ sL 0 '4 ' ^C W U • C • O • 0 — • 40 - 0 (Q N- 00 a) O r N M O O O CD r r r r c\I cv i CM m U`n c i N r = r N N O O O O O O O O O Date Figure 7 Orange County Landfill - North Facility Injection Permit Renewal Total VOC Concentrations MW-24 160 120 0) c a 80 - C a) U C U • - ♦ • ♦ ♦ 40 • • • 0 I 1 1 1 [ 7 co r- co orn o .- N co 0 0 0 0 'CV- N N- -) r ('6 M N N CD Ln (0 (D 'i (0 (0 ((0 (f7 0 0 0 o o o o o Date CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL.NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW.22 MW23 MW-24 LOD SWSL OA•'OC Date acetone 04/17/90 MCL= • 07/11/91 FBAC=100(SWSL). 05/28/92 NCGQS=600D(2L Std) 06/30/93 2L Sid.700(pre-Jan.2010) 11/04/94 2L Sid=6000(Jan.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22J99 05/23100 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 D6/22/04 11/30/04 0,5/01/05 11/02/05 05/22/06 11/27/06 06/12/07 12/12/07 06/17/08 <1.2 2 J <1,2 <1.2 <1.2 <1.2 <1.2 <1.2 8.1 J 1.2 100 ic.cc 11/05/08 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 05/19/09 <1.5 <1.5 <1.5 12 J <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100 11/18/09 <3 <3 <3 9.5 J <3 1.5 J <3 <3 <3 3 100 06/21/10 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100 11/18/10 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100 injection event(03-29-11) 05/23/11 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 08/23/11 <1.2 <1.2 <1.2 <1.2 1.2 100 injection event(09-28.11) 11/15/11 <1,2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 02/21/12 <1.2 <1.2 <1.2 <1.2 1.2 100 injection event(04-14-12) 06/05/12 <1.2 <1.2 <1.2 4.7 J <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 10/09/12 <1.2 <1.2 <1.2 <1.2 1.2 100 injection event(09-13-12) 11/12/12 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 02118/13 <1.2 <1.2 <1.2 <1.2 1.2 100 05)13/13 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 100 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL•NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-15 MW-16 MW-17 MW20 MW-21d I MW-21s MW-22 MW-23 MW24 LOD SWSL QAJQC benzene 04/17/90 <5.0 <5.0 MGL=5 07/11/91 <5.0 <5.0 FRAC=1{SWSL) 05/28/92 <5.0 <5.0 <5.0 NCGQS=1(2L Sid) 06/30/93 <5-0 <5.0 <5.0 11/04/94 1 <5.0 <5.0 <5.0 12 and 12/20/94 <5-0 <5.0 <5.0 <5.0 02/02/95 <5.0 <5.0 <5.0 13 03/13/95 <5.0 <5.0 <5.0 8 11/15/95 I <5.0 <5.0 <5.0 S J is 07/25/96 ' <5.0 <5.0 <5.0 8 02+25/97 <5.0 <5.0 <5.0 9 09/03/97 <5.0 <5.0 <5.0 8 05/04/98 <5.0 <5.0 <5.0 6 11/02198 <5.0 <5.0 <5.0 6 04/26/99 <5.0 <5.0 <5.0 7 11/22199 <5.0 <5.0 <5.0 6 05/23/00 <5.0 <5.0 <5.0 7 <5.0 <5.0 <5.0 11/29/00 <5.0 <5.0 <5.0 7 <5.0 <5.0 <5.0 06/05(01 <5.0 <5.0 <5.0 7 <5.0 <5.0 <5.0 11/13/01 <5.0 <5.0 <5.0 7 J <5.0 <5.0 <5.0 cc 06/04/02 <5.0 <5.0 <5.0 6 <5.0 <5.0 <5.0 03/12/03 <5.0 <5.0 <5.0 6 J <5.0 I <5.0 <5.0 ht 06/18/03 <5.0 <5.0 <5.0 6 J <5.0 <5.0 <5.0 ic,cc,es 1(08103 <5.0 <5.0 <5.0 5 J <5.0 <5.0 <5.0 Ic,cc 06/22/04 <5.0 <5.0 <5.0 6 J <5.0 <5.0 <5.0 ic,cc 11/30/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/01/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/02/05 <5.0 <5.0 <5.0 7 <5.0 <5.0 <5.0 05/22f06 <5.0 <S.0 <5.0 6 <5.0 <5.0 <5.0 11/27/06 <5.0 <5.0 <5.0 5.5 <5.0 <5.0 <5.0 111 06/12/07 1.4 0.5 J <0.1 5.6 <0.1 <0.1 <0.1 <0.1 0.1 1 12/12/07 1.3 0A J <0.1 4.4 <0.1 <0.1 0.5 J 0.4 J 0.1 1 06/17/08 1.2 J 0.6 J <0.1 5 J <0.1 <0.1 0.3 J <0.1 <0.1 0.1 1 tc,cc 11/05108 1.4 0.4 J <0.1 5.2 0.2 J <0.1 <0.1 0.3 J 0.2 J 0.1 1 05/19/09 1.6 0.67 J <0.2 5.1 <0.2 <0.2 0.49 J <0.2 <0.2 0.2 1 11/18/09 1.4 0.67 J <0.4 5.2 <0.4 <0.4 0.71 J 0A7 J <0.4 O.A 1 06/21110 0.8 J <0.05 <0.05 5.2 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 1 11/18/10 2 0.69 J <0.05 5.8 0.4 J <0.05 0.69 J 0.52 J <0.05 0.2 1 injection event(03-29-11) 05/23/11 1.7 <0.68 <0.68 4.4 <0.68 <0.68 <0.6B <0.68 <0.68 0.68 1 08/23/11 <0.68 <0.68 <0.68 <0.68 0.68 1 injection event(09-28-11) 11115/11 1.5 <0.68 <0.68 5.2 <0.68 <D.68 0.74 J <0.68 <0.68 0.68 1 02/21/12 <0.15 <0.15 <0.15 <0.15 0.15 1 injection event(04-14-12) 06/05/12 1.1 <0.15 <0.15 4.3 <0.15 <0.15 0.5 J <0.15 <0.15 0.15 1 10/09/12 <0.15 <0.15 <0.15 <0.15 0.15 1 injection event(09-13-12) 11/12/12 1.5 0.49 J <0.15 5.5 <0.15 <0.15 0.79 J 0.49 J <0.15 0.15 1 02/18/13 <0.15 <0.15 <0.15 <0.15 0.15 1 05/13/13 1.4 0.41 J <0.15 6.2 <0.15 <0.15 0.73 J <0.15 <0.15 0.15 1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent I Sample 1 MW-15 MW-16 MW-17 MW-20 MW21d MW-21s { MW-22 MW-23 MW-24 LOD SWSL QA/QC Bate bis(2-ethylhexyl)phihalate 04/17/90 MCL= • 07/11/91 FBAC=15(SWSL) 05/28/92 NCGQS=3(2L Std) 06/30/93 2L Sid-3(Aug.2010) 11/04/34 12/20/94 02/02/95 03/13/95 1?115135 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22/04 11/30/04 O6/01/05 11/02/05 05/22/06 11/27/66 06/12/07 12/12/07 06/17l08 11/05/08 05/19/09 11/18/09 O6/21/10 11/18/10 injection event(03-29-11) 05/23/11 4.5 J <1.7 <1.7 <1.7 1.7 15 08/23/11 Injection event(09-28.11) 11/15/11 02/21/12 njection event(04-14-12) 06/O5/12 <1.7 <1.7 <1.7 <1.7 1.7 15 10/09/12 injection event(09-13-12) . 11/12/12 02/18/13 05/13/13 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 1.7 15 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS s Sample T Constituent Dale MW-15 MW-15 MW-17 MW-20 MW-21d MW-21s I MW22 MW23 MW A 24 LOD SWSL QCIC bromomethane 04/17/90 MCL= • 07/11/91 FBAC=10(SWSL) 0528/92 NCGOS=10(GWP$) 06/30/93 GGWPS=NE(pro-Aug.2010} 11/04,94 OWPS.10(Aug.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22/04 11/30/04 06/01/05 11/02/05 05(22106 11/27/06 06/12/07 12'12/07 06/17/08 11/05/08 05/19/09 11/18/09 <0.49 <0.49 <0.49 1.5 J <0.49 <0.49 <0.49 1.6 J <0.49 0.49 10 06/21/10 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28 <0.28 0.28 10 11/18/10 <0.49 <0.49 <0.49 <0.49 <0.49 <0.49 <0.49 <0.49 <0.49 0.49 10 injection event{03-29-11) 05/23/11 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 0.58 10 08/23/11 <0.58 <0.58 <0.58 <0.58 0.58 10 injection event{09-28-11) 11/15/11 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 <0.58 0.58 10 • 02/21/12 <0.14 <0.14 <0.14 <0.14 0.14 10 injection event(04-14-12) 06/05/12 <0,14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 10 10109/12 <0.14 <0.14 <0.14 <0.14 0.14 10 injection event{09-13-12) 11/12/12 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 10 02/18/13 <0.14 <0.14 <0.14 <0.14 0.14 10 05/13/13 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 10 4 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Sample Constituent Qd1e MW-15 MW-15 MW-17 MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL QA/OC 2-butanone 04,17/90 MCL= • 07/11./91 FBAC=100(SWSL) 05/28/92 NCGQS-4000(2L Std) 06/30./93 2L Std-4200(pre-Jan.2010) 11/04194 L Old=4000(Jan.2010) 12/20/94 02/02'95 03/13/95 11?15'95 07/25/96 02/25/97 09/03/97 05/04/98 11/02198 04/26/99 11/22199 05/23/00 11/29/00 O6/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 O6/22104 11/30/04 06/01/05 11102/05 05/22/06 11/27/06 06/12/07 12/12/07 06/17/08 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 0.9 100 ic,cc 11/05/08 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 <0.9 0.9 100 05/19/09 <1 <1 <1 <1 <1 <1 <1 <1 <1 1 100 11/18/09 <2 <2 <2 <2 <2 <2 <2 <2 <2 2 100 06/21/10 <1 <1 <1 <1 <1 <1 <1 <1 <1 1 100 11/18/10 <1 <1 <1 <1 <1 <1 <1 <1 <1 1 100 injection event(03-29-11) 05/23/11 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.3 100 08/23/11 <1.3 <1.3 <1.3 <1.3 1.3 100 injection event(09-28-11) 11/15/11 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.3 100 02/21/12 <1.3 <1.3 <1.3 <1.3 1.3 100 injection event(04.14.12) 06/05/12 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.3 100 10/09/12 • <1.3 <1.3 <1.3 <1.3 1.3 100 injection event(09-13-12) 11/12/12 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.3 100 02/18/13 <1.3 <1.3 <1.3 <1.3 1.3 100 05/13/13 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.3 100 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent I Sample MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL OA/QC Date carbon disulfide 04117/00 •MCL= • 07/11/91 FBAC=100(SWSL) 05/28192 NCGQS r.700(2L Std) 06/30/93 11/04/94 • 1290/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25197 00/03'97 05/04/98 11/02/98 04/26/99 11/22/99 05l23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/1203 06/18/03 12/08/03 06/22/04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 . 06/12/07 I 12/12/07 <0.5 <0.5 <0.5 1.2 J <0.5 <0.5 <0.5 <0.5 0.5 100 06/17/08 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.5 100 ic,cc 11/05/08 8 J <0.5 <0.5 1.2 J <0.5 <0.5 1 J <0.5 <0.5 0.5 100 05/19,09 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 0.54 100 11J18/09 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 0.54 100 1 06/21/10 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 0.54 100 11/18/10 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 <0.54 0.54 100 injection event(03-29-11) 05/23/11 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100 08/23/11 <1.5 <1.5 <1.5 <1.5 1.5 100 in}ection event(09-28-11) 11/15/11 <1,5 <1.5 <1.5 <1.5 <1.5 <1.5 <1,5 <1.5 <1.5 1.5 100 I 02/21/12 <1.5 <1.5 <1.5 <1.5 1.5 100 injectron event(04.14-12) 06/05/12 <1.5 <1,5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 /00 10/09/12 <1.5 <1.5 <1.5 <1.5 1.5 100 .Infection event(09-13-12) 11/12/12 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100 02/18/13 <1.5 <1.5 <1.5 <1.5 1.5 100 05/13/13 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 <1.5 1.5 100- �.., _ CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent SampleMW15 MW-16 MW-17 I MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL QA1QC Date . chlorobenzene 04/17/90 "JCL=100 07/11/91 FBAC=3(SWSL) 05/28/92 NCGOS r 50(21 Sid) 06/30/93 11104/94 <5.0 <5.0 <5.0 <5.0 12/20/94 <5.0 <5.0 <5.0 <5.0 02/02/95 <5.0 <5.0 <5.0 <5.0 03/13/95 <5.0 <5.0 <5.0 <5.0 I 11/15/95 <5.0 <5.0 <5.0 <5.0 07/25/96 <5.0 <5.0 <5.0 <5.0 02/25/97 <5.0 <5.0 <5.0 <5.0 09/03/97 <5.0 <5.0 <5.0 <5.0 05/94/98 <5.0 <5.0 <5.0 <5.0 11/02/98 <5.0 I <5.0 <5.0 <5.0 04/26/99 <5.0 <5.0 <5.0 <5.0 11/22199 <5.0 <5.0 <5.0 <5.0 05/23/00 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/29/00 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/05/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/13/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/04/02 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 03/12/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/18/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 ) 12108/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/22,04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/30/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/01,05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/02,05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 05/22.006 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 ' 11/27/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/12,07 4.6 <0.1 <0.1 <0.1 0.5 J <0.1 0.6 J 0.7 J 0.1 3 12/12/07 3.9 0.2J <0.1 0.3J 0.3J <0.1 1.2J 0.9J 0.1 3 06/17/08 5.2 J 0.3 J <0.1 0.4 J 0.5 J <0.1 1 J 0.8 J <0.1 0.1 3 ic.cc 11/05/08 4.4 <0.1 <0.1 0.4J 0.4J 0.3J <0.1 0.8J 0.3J 0.1 3 05/19/09 6.5 <0.27 <0.27 0.88 J 0.97 J 0.68 J 1.4 J 0.99 J 0.57 J 0.27 3 11,18/09 5.6 <0.27 <0.27 0.77 J 0.81 J 0.62 J 2.1 J 1.3 J 0.59 J 0.27 3 06/21/10 6.5 <0.069 <0.069 0.8 J 0.87 J 0.66 J 1.2 J 0.58 J <6.069 0.069 3 11/18/10 6.3 0.41 J <0.27 0.73 J 0.95 J <0.27 1.6 J 1.8 J <0.27 0.27 3 injection event{03.29-11) 05/23/11 6.5 <0.74 <0.74 <0.74 0.82 J <0.74 1.8 J 1.2 J <0.74 0.74 3 08/23/11 0.99 J <0.74 2 J <0.74 0.74 3 infection event(09-28-11) 11/15/11 5.1 <0.74 <0.74 <0.74 <0.74 <0.74 2.5 J 1.9 J <0.74 0.74 3 02121/12 0.75J <0.17 1.6J <0.17 0.17 3 injection event(0414-12) 06/05/12 6.6 <0.17 <0.17 0.55 J 0.92 J <0.17 2.3 J 1.5 J <0.17 0.17 3 10/09/12 0.94 J 0.72 J 2.2 J <0.17 0.17 3 1 injection event(09-13-12) 11/12/12 7.2 <0.17 <0.17 0.77 J 1 J <0.17 <0.17 2.1 J 0.48 J 0.17 3 02/18/13 1.1 J <0.17 1.6 J 0.7 J 0.17 3 I05/13/13 7.1 <0.17 <0.17 <0.17 1.3J 0.47J 2.4J 1.4J 0.73J 0.17 3 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL•NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample Date NI I MW-16 MW-17 MW-20 ! MW-21d MW-21s MW-22 MW-23 MW-24 LOG SWSL QAIQC chkoroethane 04/17/90 <10.0 <10.0 MCL=• 07/11/91 <10.0 <10.0 FBAC=10(SWSL) 05.'28/92 <10.0 <10.0 <10.0 NCGQS M 3000(2L Std) 06,30/93 <10.0 <10.0 <10.0 2L Std=NE(pre-Jan.2010) 11/04/94 <10.0 <10.0 <10.0 <10.0 2L S1d=3000(Jan.2010) 12/20/94 <10.0 <10.0 <10.0 <10.0 02/02/95 <10.0 <10.0 <10.0 <10.0 03/13/95 <10.0 <10.0 <10.0 <10.0 11/15/95 <10.0 <10.0 <10.0 <10.0 07/25/96 <10.0 <10.0 <10.0 <10.0 02/25/97 13.3 <10.0 <10.0 <10.0 09/03/97 <10.0 <10.0 <10.0 <10.0 05/04/08 17 <10.0 <10.0 <10.0 11/02198 12 <10.0 <10.0 <10.0 04/26/99 13 <10.0 <10.0 <10.0 11/22199 10 <10.0 <10.0 <10.0 05/23/00 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/29/00 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/05101 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/13/01 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/04/02 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 03/12/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/18/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 12/08/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06122/04 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/30/04 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/01/05 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/02/05 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 , 0522/06 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/27/06 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/12/07 17.1 3.3J <0.1 1.7J 7,7J 5.8J <0.1 8.9J 0.1 10 12112/07 2.9J 0.7J <0.1 0.5J 1.3J 0.5J <0.1 2.4J 0.1 10 06/17/08 4.8 J 1.4 J <0.1 0.6 J 2.2 J 1.7 J <0.1 2.6 3 <0.1 0.1 10 lc,cc 11/05/08 3.3 J 0.5 J <0.1 0.4 J 1.5 J 1.2 J <0.1 1.9 J 1.8 J 0.1 10 05119/09 4.6 J 0.91 J <0.3 0.4 J 2.1 J 1.8 J <0.3 1.9 J <0.3 0.3 10 11/18/09 3.3 J 0.79 J <0.3 <0.3 3.5 J 3 J <0.3 1.8 J <0.3 0.3 10 06/21110 2.3 J 0.58 J <0.18 <0.18 1.1 J 0.83 J <0.18 0.95 J 0.83 J 0.18 10 11/18/10 2.5 J 0.77 J <0.3 <0.3 1.7 J 0.76 J <0.3 1.8 J 1.3 J 0.3 10 injection event(03-29-11) 05/23/11 1.4 J <0.75 <0.75 <0.75 <0.75 <0.75 <0.75 <0.75 <0.75 0.75 10 08/23/11 1.7 J 1.8 J 2.2 J 1 J 0.75 10 injection event(09.28-11) 11/15/11 1.7 J <0.75 <0.75 <0.75 0.9 J <0.75 <0.75 1.3 J <0.75 0.75 10 02/21/12 1.2 J 0.88 J 1.5 J 0.81 J 0.23 10 injection event(04-14-12) 06/05/12 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 0.23 10 10/09/12 <0.23 1 J <0.23 1.2 J 0.23 10 injection event(09-13-12) 11/12/12 2.5 J 0.75 J <0.23 <0.23 1.5 J 0.68 J <0.23 1.6 J 1.2 J 0.23 10 02/18/13 1.4 J <0.23 1.3 J <0.23 0.23 10 05113/13 4.6 J <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 2.6 J <0.23 0.23 10 I CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-15 MW-16 MW-17 MW-20 I MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL CA/QC 2,4-D A 04/17/90 MCL=70 07/11/91 i FBAC=2(SWSL) 05/28/92 NCGQS=70(2L Std) 06/30/93 11/04194 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 D9/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 <1.0 <1.0 <1.0 1.3 R <1.0 <1.0 <t.0 cc.ce 11/13/01 06/04/02 <1.0 <1.0 03/12/03 <1.0 <1.0 06/18/03 <1.0 <1.0 12/08/03 <1.0 <1.0 66/22/04 <1.0 <1.0 11/30/04 <1.0 <1.0 06/01/05 <1.0 <1.0 11/02/05 <1.0 <1.0 05/22/06 <1.0 <1.0 11/27/06 06/12/07 <0.03 <0-03 0.03 2 12/12/07 06/17/08 <0.03 <0.03 11/05/08 05/19/09 <0.091 <0.091 <0.091 <0.091 0.091 2 11/18/09 06/21/10 <0.091 <0.091 <0.091 <0.091 0.091 2 11/18/10 injection event(03-29-11) 05/23/11 <0.15 <0.15 <0.15 <0.15 0.15 2 08/23/11 injection event(09-28-11) 11/15/11 02/21/12 injection event(04-14-12) 06/05/12 <0.16 <0.16 <0.16 <0.16 0.16 2 10/09/12 injection event(09-13-12) 11/12/12 02/18/13 05/13/13 <0.16 <0.16 <0.16 <0.16 <0.16 <0.16 0.16 2 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Sample Constituent Date MW-15 MW-16 MW-17 ! MW-20 MW-21d MW-21s MW22 MW-23 MW24 LOB SWSL OA/OC 4,4'-ODD ♦ 04117/90 1 MCL=• 07/11/91 FBAC;0.1(SWSL) 05/28/92 NCOOS a 0.1(2L Std) 06/30/93 2L Std=0.14(pm-Jan.2010) 11/04194 '21-SW=0.1(Jan.2010) 12/20/94 02/02/95 03/13195 11/15/95 07/25/96 02125/97 09/03/97 05/04/98 11102/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12108/03 06/22/04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 <0.01 0.02 J 0.01 0.1 12/12/07 06/17/08 <0.01 <0.01 11/05108 05/19/09 <0.024 <0.024 <0.024 <0.024 0.024 0.1 11/18/09 08/21/10 <0.013 <0.013 <0.013 <0.013 0.013 0.1 11/18/10 injection event(03-29-11) 05/23/11 <0.013 <0.013 <0.013 <0.013 0.013 0.1 08/23/11 linjection even)(09-28-11) 11/15/11 02/21/12 injection event(04-14-12) 06/05112 <0.044 <0.044 <0.044 <0.044 0.044 0.1 /0/09/12 injection event(09-13-12) 11/12/12 02/18/13 05/13/13 <0.044 <0.044 <0.044 <0.044 <0.044 <0.044 0.044 0.1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-iS MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 I MW-23 MW-24 LOD SWSL QAJQC Date 1,2-dichlorobenzene 04.,17/90 MCL=600 07/11/91 FBAC=5(SWSL) 05/28/92 NCGQS=20(2L Std) 06/30/93 2L Std--24(pre-Jan.2010) 11/04/94 2L Std-20(Jan.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02,25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 Sr 03/12/03 ht 06/18/03 12/08/03 ic,cc 06/22/04 ic,cc 11/30/04 06/01/05 1 1/02/05 05/22/06 11/27/06 06/12/07 12/12/07 0.5 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 06/17/08 0.4 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 5 ic,cc 11/05/08 0.4J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 5 05/19/09 0.46 J <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 0.27 5 11(1 8/09 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 0.27 5 06/21/10 0.54 J <0.052 <0.052 <0.052 <0.052 <0.052 <0.052 <0.052 <0.052 0.052 5 11/1 8/10 0.61 J <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 0.27 5 injection event(03-29-11) 05/23/11 0.66 J <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 0.11 5 08/23/11 <0.11 <0.11 <0.11 <0.11 0.11 5 injection event(09-28-11) 11/15/11 0.66 J <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 0.11 5 02/21/12 <0.19 <0.19 <0.19 <0.19 0.19 5 injection event(04-14-12) 06/05/12 0.5 J <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 0.19 5 10/09/12 <0.19 <0.19 <0.19 <0.19 0.19 5 injection event(09-13-12) 11/12/12 0.56 J <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 0.19 5 02/18/13 <0.19 <0.19 <0.19 <0.19 0.19 5 05/13/13 0.63 J <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 0.19 5 0 a vs 0 a 0 OJ aaddddoddddddoddd ar2,m 1,m mm- �m cjddddddd - • rrvvvvvv v d d M 6) N 0 IO, M C M M W M N r to ,- r M M M 3 N w N N o M td N N M V r J V N 00000000000000+-�-J-1 Nor r ty a - V)u)1f)u)Ifl u)1()u)lf)u)u)u)u))0 m N . • • • N O N LL 2V V V V V V V V V V V V V V V d O d v r I a ¢ a ¢ O 0 J .- W w Z. N - Co 0 0 0 0 0 0 0 0 0 0 0 O-�'� 'K m a 2 7 g 0 T-' O. Ill uiu1uiu)ul Ill u1ir If]u)u]tri t6 M M�{ A i'1 r r T z -1 < 0 0J 3 V V V V V V V V V V V V V V O 0 4 6 • =r o o r d d d r o l+ O ‹ E U Z LI W 2 mama' a1- oz 1-O ZZ LL a t a w a CZ a ~ o 0 0 g 0 0 q 0 0 q q a q o q-A-'e Q,m r m m°' to N N r F a O U~ N tri ui lr)IS)tri IS)In vi tri Lc)ui ui vi tri r q .- ,- pi . r o •. N N N Z _. 3 v v v v v v v v v v v v v v V M EZ =O=w w O O3Ja mu -- - W 0 _ }m Q Z N 00000000000000000000000 ' N Q]�CO•O t b ^ t q c� I_ F =2 a ui ui u)u)N 66 u)uS u)u)ui ui u)ui u)u)ui ui ui Ili u)ui u)W of u1 to .`{ V1 tl• .ui 1D ui . Q l'. Z U y VVVVVVVVVVVVVVVVVVVVVVV tD F- 0 O 00 cc cC Z O 00• 41-- 7 0000 00 000 0000 0 000000 000 000.- W 2 W m p T O 0 Z U U I[)tti K)h u)Il)u)tr)tci k)tl).t()u)u)t()I[i ui tti v),i...5 u)6 Il)d d d d M M O M 0 d d < o Z v v V V v V v v v V v V V V v v V v V V V V v v V v V v V V V v v v d O O V a O O a y O o o O a 0 0 0 o O 0 0 o d 0 0 0 0 0 0 0 0 6 0 0 o r 7-]. W m - -, U J ,.u)u)u)a u1 u)u)u)u)N 6 u)u1 u)u)u)u)uS ui ui 6 uS u)N u)u1 O R u1 M 7 n O a O 3 q q V V V V V V V V V V V V V V V V V V V V V V V V V V V d O o d o G d V V V O a In r O O O O O 0 0 0 0 O O O 0 0 O 0 0 0 1S -] -'�-) M M COMIC• 01 V M .- u uiu1uiu)uiu)u)6ui tfiuiN u] ui ui uiu)u)wa Ill N VVVVVVVVVOVVV V V 0 V m 4' V V V 4I v)lli m h m A tO ^ C �' �' 2 pp e� Cry�1 dd 6l'6Fol@ itilmmrnmmgm$1 OOOOOOOOOOOOOOOOOOOOOOrr rNCV NNMM :mO4 n7c7mu1lilm (�u1occ,�m mm4- mm O' m nm nN a m'm In'Vl - c$ E o .-N[m)O�11 O r r N N O O O N N S V N o r O M O O N N r 0 �[ 0 _ m nmrAc��-=- gv1riric1Tg,--4. A4rmrin,- c4iar l ,-W ral . ,- w 0000,-�OOwOo o v-o OOr ,-ow o ,-ora ,-00,-o rroo a N11 - 7 Si at.) b C O N N V M G J N n 0 4 0 C 0o 2 w� .. v E)i i L n r II r• b m Cl N 11 0 u u o c 0 0 a ° U O v a 4C) Liww m 2 2 2 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent �188 MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL QA'QC diohlorodifluoromethane♦ 04/17/90 MCL=• 07/11/91 FBAC=5(SWSL) 05/28/92 NCGQS a 1000(2L SW) 06/30/93 2 L Std a 1400(pre-Jan.2010) 11/04/94 2L Std=1000{Jan.2010} 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09103(97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04,02 03/12/03 06/18/03 12/08/03 06/22/04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 12/12/07 06/17/0B <0.1 <0.1 0.1 5 ic,cc 11/05/08 <0.1 <0.1 0.73J <0-' <0-t <0.1 <0.1 <0.1 0.1 5 05/19/09 <0.38 <0.38 <0.38 <0.38 0.38 5 11/18/09 06/21/10 <0.091 <4.091 <0.091 <0.091 0.091 5 11/18/10 injection event(03-29-11) 05/23/11 <0.56 <0.56 <0.56 <0.56 0.56 5 08/23/11 injection event{09-28-11) 11/15/11 02/21/12 injection event(04-14-12) 06/05/12 <0.2 <0.2 <0.2 <0.2 0.2 5 10/09/12 injection event(09-13-12) 11/12/12 02/18/13 05/13/13 <0.2 <0.2 <0.2 <0.2 <0.2 e0.2 0.2 5 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Sample T Constituent A Date MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL i QOC 1.1-dichloroethane 04/17/90 <5.0 <5.0 MOL=♦ 07/11/91 <5.0 <5.0 FBAC=5(SWSL) 05/28/92 54 <5.0 <5.0 NCGQS=6(2L Std) 06/30/93 39.8 <5.0 <5.0 2L Std=70(pre-Jan.2070) 11/04/94 43 6 <5.0 <5.0 2L Std.6(Jan.2010) 12/20/94 20 <5.0 <5.0 <5.0 02/02/95 28 <5.0 <5.0 <5.0 03/13/95 32 J <5.0 <5.0 <5.0 cc 11/15/95 38 6 <5.0 <5.0 is 07/25/96 72 8 <5.0 <5.0 02/25/97 57 12 <5.0 <5.0 09/03/97 71 9 <5.0 <5.0 05/04/98 56 10 <5.0 <5.0 11/02/96 67 9 <5.0 <5.0 04/26/99 52 9 <5.0 <5.0 11/22/99 45 9 <5.0 <5.0 05/23/00 46 9 <5.0 <5.0 24 42 <5.0 11/29/00 49 9 <5.0 <5.0 42 36 <5.0 06/05/01 42 7 <5.0 <5.0 25 35 <5.0 11/13/01 49 J 10 J <5.0 <5.0 41 J 33 J <5.0 cc 06/04/02 31 J 7 J <5.0 <5.0 22 J 20 J <5.0 cc 03/12/03 30 J 9 J <5.0 <5.0 24 J 14 J <5.0 ht 06/18/03 30 J 8 J <5.0 <5.0 22 J 22 J <5.0 ic,cc,ss 12/08/03 26 J 5 J <5.0 <5.0 22 J 20 J <5.0 Ic,cc 06/22/04 36 J 6 J <5.0 <5.0 25 J 24 J <5.0 ic,cc 11/30/04 19 J <5.0 <5.0 <5.0 16 J 8 J <5.0 ic,cc 06/01/05 26 5 <5.0 <5.0 19 18 <5.0 11/02105 31 9 <5.0 <5.0 28 25 7 05/22/06 19 6 <5.0 <5.0 20 20 7 11/27/06 19 5 <5.0 <5.0 17 17 7 06,12107 18.7 5.6 <0.2 <0.2 16.2 15.4 3.7 J 25.7 D.2 5 12/12/07 17 5.6 <0.2 <0.2 12.2 8.5 4.9 J 23.4 0.2 5 06/17708 11 J 5.2 J <0.2 <0.2 13 J 13.3 J 3.1 J 26.2 J 3.4 J 0.2 5 ic,cc 11/05/08 11.7 3.7 J <0.2 <0.2 13.2 13.1 0.6 J 25.6 18.6 0.2 5 05/19/49 17 5.2 <0.33 <0.33 16 16 5 27 21 0.33 5 11/18709 14 5.8 <0.33 <0.33 14 14 7 30 19 0.33 5 06/21/10 11 3.9 J <0.05 <0.05 /i 9.9 4.8 J 16 13 0.05 5 11/18/10 12 4.6 J <0.33 <0.33 15 13 7.2 28 19 0.33 5 injection event(03-29-11) 05/23/11 7.8 2.7 J <0.08 <0.08 10 9 6 21 11 0.08 5 08/23/11 13 14 27 15 0.08 5 injection event(09-28-11) 11/15711 9 3.2 J <0.08 <0.08 8.6 10 6 21 14 0.08 5 02/21/12 11 13 27 12 0.13 5 injection event(04-14-12) 06/05/12 6.1 0.56 J <0.13 <0.13 9.3 6.6 5 22 12 0.13 5 10/09/12 9.2 12 21 16 0.13 5 injection event(09-13-12) 11/12/12 8.2 3 J <0.13 <0.13 9.9 8.5 7 21 16 0.13 5 02/18/13 11 9.2 24 17 0.13 5 05/13/13 9.1 2.5 J <0.13 <0.13 11 10 7.1 22 14 0.13 5 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HELL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS ~Constituent Sample MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 I MW-23 MW-24 LOD SWSL QA/QO Dale 1,2-dichioroethane 04/17/90 MCL=5 07/11/91 FBAC=1(SWSL) 05/28/92 NCGQS=0.4(2L SW) 06/30/93 2L 5td=0.38(pre-Jan.2010) 11/04/94 2L Sid=0.4(Jan.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 • 12/08/03 06/22'04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 0.8 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 12/12'07 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.5 J 0.1 1 06/17/08 0.6 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.5 J <0.1 0.1 1 ic,cc 11/05/08 0.5 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 05/19/09 0.94 J <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 0.65 1 11/18/09 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 0.65 1 06/21/10 0.54 J <0.082 <0.082 <0.082 <0.082 <0.082 <0.082 <0.062 <0.082 0.082 1 11/18/10 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 <0.65 0.65 1 injection event(03-29-11) 05/23/11 0.6 J <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 0.47 1 06/23/11 <0.47 <0.47 0.62 J <0.47 0.47 1 injection event(09-28-11) 11/15H 1 0.6 J <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 0.53 J <0.47 0.47 1 02/21/12 <0.21 <0.21 <0.21 <0.21 0.21 1 injection event(04-14-12) 06/05/12 <0,21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 1 10/09/12 <0.21 <0.21 <0.21 <0.21 0.21 1 injection event(09-13-12) 11/12'12 0.62 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.52 J <0.21 0.21 1 02/18/13 <0.21 <0.21 0.62J <0.21 0.21 1 05/13/13 0.45 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS COOSllluent Sample MW-15 MW-16 MW-17 MW-20 MW21d MW-21s , MW-22 MW-23 1 MW-24 LOD SWSL QA/0C Date I 1,1-dichloroethene 04117/90 <5.0 <5.0 MCL=7 07/11/91 <5.0 <5.0 FBAC=5{SWSL) 05/28/92 <5.0 <5.0 <5.0 NCGOS=7(2L Sid) 06/30/93 <5.0 <5.0 <5.0 11/04194 <5.0 <5.0 <5.0 <5.0 12/20/94 <5.0 <5.0 <5.0 <5.0 02/02,95 <5.0 <5.0 <5.0 <5.0 03/13/95 <5.0 <5.0 <5.0 <5.0 11/15/95 <5.0 <5.0 <5.0 <5.0 07/25/96 6 <5.0 <5.0 <5.0 02/25/97 <5.0 <5.0 <5.0 <5.0 09/08/97 5 <5.0 <5.0 <5.0 05/04/98 <5.0 <5.0 <5.0 <5.0 11/02/98 <5.0 <5.0 <5.0 <5.0 04/26/99 <5.0 <5.0 <5.0 <5.0 11/22/99 <5.0 <5.0 <5.0 <5.0 05/23/00 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11,29/00 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/05/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/13/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/04/02 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5-0 03/12/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/18/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 12/08/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06122/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/30/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/01/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/02105 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 05/22/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/27/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/12/07 1.5 J <0.1 <0.1 <0.1 0.6 J <0.1 <0.1 1.4 J 0.1 5 12/12/07 1.4 J <0.1 <0.1 <0.1 0.3 J <0.1 <0.1 1.5 J 0.1 5 06/17/08 0.8 J <0.1 <0.1 <0.1 0.6 J <0.1 <0.1 1.5 J <0.1 0.1 5 ic,cc 11/05/08 0.7 J <0.1 <0.1 <0.1 0.4 J 0.3 J <0.2 1.1 J 0.4 J 0.1 5 05/19109 1.1 J <0.24 <0.24 <0.24 0.43 J <0.24 <0.24 1.1 J 0.62 J 0.24 5 11/18/09 0.74 J <0.24 <0.24 <0.24 0.43 J <0.24 <0.24 1.4 J 0.41 J 0.24 5 06121l10 0.73 J <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 0.71 J <0.15 0.15 5 11l18l10 0.73 J <0.24 <0.24 <0.24 0.41 J <0.24 <0.24 1.4 J <0.24 0.24 5 injection event(03-29-11) 05/23/11 0.61 J <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 1.2 J <0.6 0.6 5 08/23/11 <0.6 <0.6 1.3 J <0.6 0.6 5 injection event(09-28-11) 11/15/11 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 0.75 J <0.6 0.6 5 02/21/12 <0.21 <0.21 0.98 J <0.21 0.21 5 injection event(04-14-12) 06/05/12 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.58 J <0.21 0.21 5 10/09/12 <0.21 <0.21 <0.21 <0.21 0.21 5 injection event(09-13-12) 11/12/12 0.43 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 5 02/18113 <0.21 <0.21 0.74 J <0.21 0.21 5 05/13/13 0.8 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.44 J <0.21 0.21 5 U m O N U ,U] U V U d V L V U U U U J 3 .... ,InIn,nIn.....tOInin b OW.in ON N N OOYl,n OO O 6666 m m o C 1 n^ -J o 0 0 0 o a o 0 0 0 0 0 N -, n rp N m rr, M N A '1 N N N N ccl cc4 cm't rmN N .n —W'm.M t n ,n eh,n 1n C] ,n N m to J N Z N O O O a 0 a 0 a 0 a 0 a 0 0 n n n nn m n n n V n V a 6rn,n,n tri 6666,4666 ui n v7 cn m en n eA era • n • LL �_ v v V V v v V V V v v v v V ,y' m ni d,i an ri 4 m 'n 7 ,o 6 I a 2 SQ zO 0- 0 m ?J d U7 N 7 Q 'N ] NnpM rAm 44 0,R 1,m oV cM f... , 3 ,-rrvmnnmN ,-. 6gVN ,- ZJds _ QtiO Z J N rO2 0C Q 1- OZ1- 0 ZZ - LLaxF' al'r a },,J z O 4 ~ N ,-- ow 0 _ CO V O n r 01 to N P.[V 14 h NO a, P-Z J 2 U F- 3 r N .-N N N N N 0 N co m N R R N,6 N m M m!V M N N Q,- N N N F U1 Y Z J m 2 Z 2 0 2 w up wirE3 LL = N 7 0 0 0 0 O O O O O o n-2 '7"!'"1(V N 7 t� 2}} Q 0 0 m,-6,,- N O N O O O -) 10 WW(�1 f� n �rf HF 2 Z Q ,-MNaN NN N N r r mo m0,n,neriul,rileiu'i,166 N 7_ q mnN Po a lit v Li z 0 a y2 N V V Y V V V V V Y V .r G O O O O v v o a I- O zom Q im 0 w 0 O o 0 _ _ QS rUC F N �r ,3 ^ _Z 00 Vi cn6 In,n,n I,n Ki 4i,ri,n In n,n In I,n In,n ki I,n,n,n I,n I,n,Aa a a a C]a b a a a O o a Qa O W V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V O V V V V Y V O O 2 _. > L. j aaa a a a a a a a a a a a a a a aa� �- , ya T mv,r,Qp� a ,r1 c[7 ul In In,n,n,n,n,n 1n;In,n lC ul,n V)lrl n o 1[7 W m r a In m N Cl V V V V V v V V V V V V V V V V V V V b r r eA m Y r T n m 1�n '� v ei v N �rpp �eyy yy t,pp mm e� Co Gp a 07�F-O,mm Ela gm]N+-Nul ie .0 0 Rmw es o6 ico r4K w w M R o v N N,n,[] 0 ,V q, a .- N rO RLn InN m nn m mO mp,Opp Nr7MM O W) 0f,nmed M O air NN N m(2 Q M a1 T M W o O�1 m m b T m M M 0 0 0 0 0 0 0 0 0 0 0_ 0 0 0 0 0 O __ _ r-�8 64-6 nu�i,nrn.1- 0 i,, 1n r� c7+ _mm(� o r7+ (yne7+ rl. n,n mm� m r7+ mrn E d N- C_]O N O N N o on o N N N N 0 - S o N r=]O o N N , O R N A rV O O P m dF-, mrrlel co,n,=a . ,n� rr3mrnel� r T'$ ^ l,17, r,nm�a<3a,=r'F,n rn 0 b o o b -O b o r b- b r 0 0 b — 0 — —0— —o o—0 0— o b 0 -a - - N N G N dt en 7 M J L N N ,- r O -J v b o b b O C C C -a-a" 0 f e ti I i I i T'n130 oOoON31 08 - _ c J,n mmLL ; ,c � U a", m III. : CLIENT: THE COUNTY OF ORANGE • FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW.15 MW-16 MW-17 I Mw-20 MW-21d MW-21s MW-22 ! MW-23 I• MW-24 LOD SWSL OA/OC Date trans-1,2-d!chlOr0ethene 04/17/90 MCL=100 07/11/91 FBAC=5(SWSL) 05/28/92 NCGOS W 100(2L Std) 06/30/93 11/04/94 1220,/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22/04 11/30/04 06/01/05 11/02/05 i 05/22/06 11/27/06 06/12107 1.1 J <0.1 <0.1 0.8 J <0.1 <0.1 <0.1 <0.1 0.1 5 12/12/07 1.1 J <0.1 <0.1 0.5 J <0.1 <0.1 <0.1 0.4 J 0.1 5 06/17/08 1 J <0.1 <0.1 0.5 J <0.1 <0.1 <0.1 0.4 J <0.1 0.1 5 ic,cc 11/05/08 0.8 J <0.1 <0.1 0.4J 0.4J 0.2 J <0.2 0.6J 0.3J 0.1 5 05/19/09 0.99 J <0.34 <0.34 <0.34 <0.34 <0.34 <0.34 <0.34 <0.34 0.34 5 11/18/09 0.88 J <0.34 <0.34 0.43 J 0.42 J <0.34 <0.34 0.71 J 0.44 J 0.34 5 06/21/10 0.83 J <0.11 <0.11 0.42 J <0.11 <0.11 <0.11 <0.11 <0.11 0.11 5 11/18/10 1.2 J <0.34 <0.34 0.49 J <0.34 <0.34 <0.34 0.66 J <0.34 0.34 5 injection event(03-29-11) 05/23/11 1 J <0.12 <0.12 0.42 J <0.12 <0.12 <0.12 0.53 J <0.12 0.12 5 08/23/11 <0.12 <0.12 0.41 J <0.12 0.12 5 'n,ectionevent(09-28-11) 11/15/11 0.93J <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 0.12 5 02/21/12 <0.21 <0.21 I <0.21 <0.21 0.21 5 Injection event(04-14-12) 06/05/12 0.57 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 5 10/09/12 <0.21 <0.21 <0.21 <0.21 0.21 5 injection event(09-13-12) 11/12/12 0.78 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 5 02/18/13 <0.21 <0.21 <0.21 <0.21 0.21 5 05/13/13 0.86 J <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 <0.21 0.21 5 0 1 I CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Samp mete MW-15 MW-16 MW-17 I MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL QAOC dichloromethane 04/17/90 <10.0 <10.0 (methylene chloride) 07/11/91 <10.0 <10.0 MCL=5 05/28/92 <10.0 <10.0 <10.0 FBAC=1(SWSL) 06/30/93 <10.0 <10.0 <10.0 NCGOS=5(2L Std) 11/04/94 <10.0 <10.0 <10.0 <10.0 2L Sid=4.6(pre-Jan.2010) 12/20/94 <10.0 <10.0 <10.0 82B i 2L Sid=5(Jan.2010) 02l02/95 <10.0 <10.0 <10.0 <10.0 03/13/95 <10.0 <10.0 <10.0 <10.0 11/15/95 <10.0 <10.0 <10.0 <10.0 07/25/96 <10.0 <10.0 <10.0 <10.0 I 02/25/97 <10.0 <10.0 <10.0 <10.0 i,1 09/03/97 <10.0 <10.0 <10.0 <10.0 1,1 05/04/98 <10.0 <10.0 <10.0 <10.0 i,f 11/02/98 <10.0 <10.0 <10.0 <10.0 i,f,t 04/26/99 <10.0 <10.0 <10.0 <10.0 i,f,t 11/22/99 <10.0 <10.0 <10.0 <10.0 i 05/23/00 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/29/00 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/05/01 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 f,t 11/13/01 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 i.f 06/04/02 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 03/12/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/18/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 12/08/03 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/22/04 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/30/04 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/01/05 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/02/05 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 05/22/06 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 i,t 11/27/06 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/12/07 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 0.6 1 f 12/12/07 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 0.6 1 06/17/08 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 0.6 1 ic,cc 11/05/08 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 0.6 1 t 05/19/09 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 0.53 1 11/18/09 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 0.53 1 06/21/10 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07 0.07 1 11/18/10 <0.53 <0-53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 <0.53 0.53 1 injection event(03-29-11) 05/23/11 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 1 06/23f11 0.45 J 0.44 J <0.14 0.14 1 n,ection event(09-28-11) 11/15/11 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 1 02/21/12 <0.23 <0.23 <0.23 <0.23 0.23 1 injection event(04-14-12) 06/05/12 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 0.23 1 10/09/12 <0.23 <0.23 <0.23 <0.23 0.23 1 injection event(09-13-12) 11/12/12 <0.23 <0.23 <0.23 <0.23 <0.23 0.64 J <0.23 0.6 J <0.23 0.23 1 02/18/13 <0.23 <0.23 <0.23 <0.23 0.23 1 05/13/13 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 0.23 1 i CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS I Constituentp81e8 MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW22 MW23 MW-24 LOD ! SWSL QA/QC 1.2-dichloropropane 04/17/90 MCL=5 07/11/91 FBAC=1(SWSL) 05/28/92 NCGOS=0.6(2L Std) 06/30/93 2L Std 0.51(pre-Jan.2010} 11/04/94 2L Std=0.6(Jon.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22,04 11/30/04 06/01/05 11/02105 05/22/06 11/27/06 06/12/07 0.6 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 12/12/07 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 06/17/08 0.7 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 lc,cc 11/05/08 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.1 1 05/19,09 0.65 J <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 0.43 J <0.2 0.2 1 11/18/09 0.66 J <0.2 <0.2 <0.2 <0.2 <0.2 0.48 J 0.49 J <0.2 0.2 1 06/21/10 0.63 J <0.098 <0.098 <0.098 <0.098 <0.098 <0.098 <0.098 <0.098 0.098 1 11/18/10 1.i <0.2 <0.2 <0.2 <0.2 <0.2 0.53J 0.67J <0.2 0.2 1 injection event(03-29-11) 05/23/11 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 0.59 1 08/23/11 <0.59 <0.59 <0.59 <0.59 0.59 1 injection event(09-28-11) 11/15/11 0.77 J <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 <0.59 0.59 1 02/21/12 <0.1 <0.1 0.49 J <0.1 0.1 1 injection event(04-14-12) 06/05/12 0.58 J <0.1 <0.1 <0.1 <0.1 <0.1 0.54 J <0.1 <0.1 0.1 1 10/09/12 <0.1 <0.1 <0.1 <0.1 0.1 1 injection event(09-13-12) 11/12/12 0.76 J <0.1 <0.1 <0.1 <0.1 <0.1 0.42 J <0.1 <0.1 0.1 1 02/18/13 <0.1 <0.1 0.47 J <0.1 0.1 1 05/13/13 0.55 J <0.1 <0.1 <0.1 <0.1 <0.1 0.64 J 0.53 J <0.1 0.1 1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Stitnal Constlluent Dale& MW-15 MW16 MW-17 MW20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL OAOC heptachlor epoxide• 04/17/90 MCL=0.2 07/11/91 FBAC=0.075(SWSL) 05/28/92 NCGQS=0.004(2L Std) 06/30/93 ,2L Std=0.0038(pre-Jen.2010) 11/04/94 ''2L Std=0.004(Nan.2010} 12/20/94 02/02/95 03113./95 11/15/95 07/25/96 02/25/97 09/03197 O5/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22,04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 <0.01 0.02 J 0.01 0.075 12,12/07 06/17/O8 <0.01 <0.01 11/05/08 05.f19/09 <0.025 <0.025 <0.025 <0.025 0.025 0.075 11/18/09 06,21/10 <0.0089 <0.0089 <0.0089 <0.0089 0.0089 0.075 11/18/10 injection event(03-29-11) 05/23/11 <0.0089 <0.0089 <0.0089 <0.0089 0.0089 0.075 OB/23/11 injection event(09-28.11) 11/15/11 02/21/12 injection event(04-14-12) 06/05/12 <0.037 <0.037 <0.037 <0.037 0.037 0.075 f 0/09/12 injection event(09-13-12) 11/12/12 02/18/13 05/13/13 <0.037 <0.037 <0.037 <0.037 <0.037 <0.037 0.037 0.075 1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS 11 Constituent sample MW15 MW-16 MW-17 MW-20 MW-21d T MW-21s MW-22 MW-23 MW-24 LOD SWSL QAOC Date isobutyl alcohol ♦ 04n 7/90 MCL=• 07/11/91 FBAC=100(SWSL.I 05/28192 NCGOS =NE O6/3O/93 11/04/94 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02125/97 <100 <100 <100 <100 09/03/97 05/04/98 <100 <100 <100 241 R 11/02/98 <100 <100 <100 <100 04/26/99 <100 <100 <100 <100 11/22/99 <10D <100 <100 <100 0523/00 <100 <100 <100 <100 <100 <100 <100 11/29/G0 <100 <100 <100 <100 <100 <100 <100 06/05/01 <100 <100 <100 <100 <100 <100 <100 11/13/01 06/04/02 <100 <100 03/12/03 <100 <100 O6/18/03 <100 <100 12/08/03 <100 <100 06/22/04 <100 <100 11/30/04 <100 <100 O6/01/05 <100 <100 11/02105 <100 <100 05/22/06 <100 <100 11/27/06 06/12,07 <1.2 <1.2 12 100 12/12/07 06/17/08 <1.2 <1.2 ic,cc 11/05/08 05/19/09 <14 <14 <14 <14 14 100 11/18/09 06/21/10 <14 <14 <14 <14 14 100 11/18/10 injection event(03-29-11) 05/23/11 <11 <11 <11 <11 11 100 08/23/11 injection event(09-28-11) 11/15/11 02/21/12 injection event(04-14-12) 06/05/12 <11 <1: <11 <11 11 1 DO 10/09/12 injection event(09.13-12) 11/12/12 02/18/13 05/13/13 <11 <?1 <11 <11 <11 <11 11 T00 CLIENT- THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-15 MW-16 MW-17 MW20 MW-21d MW-21s MW-22 MW23 MW-24 LOD SWSL QA/QC Date naphthalene R 04/17/90 MCL=♦ 07(11/91 FRAC=10(SWSL) 65/28/92 NCGOS=6(21 SW) 06/30/93 11/04/94 12/20/94 02/02/95 03/13/95 1 1115/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/i 2/03 06/18/03 12/08/03 06/22/04. 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 12/12/07 06/17/08 ic.cc 11/05/08 05/19/09 11/18/09 06/21/10 <0.086 1.9 J <0.086 <0.086 0.086 10 11/18/10 <0.39 0.9 J <0.39 <0.39 0.39 10 injection event(03-29-11) 05/23/11 <0.46 1.1 J <0.46 <0.46 0.46 10 08/23/11 <0.46 <0.46 0.46 10 injection event(09-28-11) 11/15/11 <0.46 <0.46 <0.46 0.46 <0.46 <0.46 <0.46 <0.46 <0.46 0.46 10 02/21/12 <0.11 <0.11 <0.46 <0.46 0.11 10 injection event(04-14-12) 06/05/12 <0.11 <0.11 <0.11 1.4 J <0.11 <0.11 <0.11 <0.11 <0.11 0.11 10 10/09/12 <0.11 <0.11 <0.11 <0.11 0.11 10 injection event(09-13-12) 11/12/12 <0.11 <0.11 <0.11 1.7 J <0.11 <0.11 <0.11 <0.11 <0.11 0.11 10 02/18/13 <0.11 <0.11 <0.11 <0.11 0.11 10 05/13/13 <0.11 <0.11 <0.11 3.6 J <0.11 <0.11 <0.11 <0.11 <0.11 0.11 10 o a 8 C o o - J Ln m N N N N M. ).m m m A A A n n n d606666 0 0 0 0 0 0 O 0 O d 0 it -h-awaaann-hr-.1. 1- ' N m'fi t-N M OI N@ a1 n 1� Q u,N W li+-N.=L°il•iNci.fNciNcN* N J O V M mm , N r ` ~ OU � a t 1lIfnuiLnLL)mninIliwinululoOoO vvvvvvvvvvvvvvVvvv9do$T o0 00 IL x a Q z 0 - 0,.0 m Lu O ly O o 0 0 0 0 0 0 0 0 0 0 0 0 8'''n n n'n n n n n N y 1I�� 0 J m d N V]Iei m.,o n Hl IL]Ifi Ifi Ili Yi I!]o w NIL)O e]g Q 3 0 0 0 b O O O O O Z J a(;) ; v V v v V V V V v v v V V V 0 0 0 v V 6 p d' V V V p V v V V V a a U Z J N 2 Ozs=-- 0 zZ Q Jflz J ry OOoo0000000000- »....rn nn -�Z O a� 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(!) V V O V V 000 J_ 1M 2 Z 2 O W a U Q W Z �iL O O z N Oo00 g0000o 00000000O000o qqo N NN LV m CISCIN n r r V v V V V v V v V V V v v V v V V V V v V o d V V OC I- V V V VVVvvOQOoOo T2 ? 7 =▪ Ozccc 00 L4u0o v~) 0 0 q F = O O o d o o d d O d d a d a o 0 o 0 0 0 0 o o 0 0 0 o 0 0 0 l�[N N N CO')m CO m n CO r Z 0 0 Il'i V1 N LL7 If)1!I IA N Ili IA U]U]Ki U)6 u1 Ili 6 N u1 us U]U].1 Vi 1n N us U]1n 0 co 0 O a¢ O v V V v V V V V V V V v V V V V V V V V V Y V V V v V V V V V V V Y 0 0 0 d 0 O O O eV O O Q ra o 0 0 0 o a 0 0 0 0 0 0 0 0 o d o o d d d o d o 0 o d o o d N N N N A'm M� � A 'n n � C -Y LO uV IV uj KVI nV uV N lV V V V 9151591599991599991599999 O o V OV Vvv v v LL 0 0 0 0 0 o o o o O O O O O O O N N[y N m m O)M n n r N _-M VONC7mNNrnP H IVVim VV V VVV VVVVV V OO o O 66 O00 O O O O . 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U 0 N p d W O ; 0 ... . 4) ® m CI L II V) O C C O 2-,..to m 2 2 2 �2mZ CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL•NORTH FACILITY LOCATION: CHAPEL BILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW15 MW16 MW-17 MW-20 ' MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL OA/CC Date toluene 04/17/90 MCL=1000 07/11/91 FBAC=1(SWSL) 05/28/92 <0.5 <0.5 <0.5 NCGQS=600(2L Sfd) 06/30/93 <10.0 <10.0 <10.0 2L Std=1000(pre-Jan.2010) 11/04/94 <5.0 <5.0 <5.0 <5.0 2LStd-600(Jan.2010) 12/20/94 <5.0 <5.0 <5.0 <5.0 02/02/95 <5.0 <5.0 <5.0 <5.0 03/13/95 <5.0 <5.0 <5.0 <5.0 11/15/95 <5.0 <5.0 <5.0 <5.0 07/25/96 <5.0 <5.0 <5.0 <5.0 02/25/97 <5.0 <5.0 <5.0 <5.0 09/03/97 <5.0 <5.0 <5.0 <5.0 05/04/94 <5.0 <5.0 <5.0 <5.0 11/02/98 <5.0 <5.0 <5.0 <5.0 04/26/99 <5.0 <5.0 <5.0 <5.0 11/22/99 <5.0 <5.0 <5.0 <5.0 05/23/00 <5.0 <5.0 <5.0 <5.0 8 R 6 R <5 11/29/00 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/05/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/13/01 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/04/02 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 03/12/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/18/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 12/08/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/22/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/30/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/01/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/02/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 05/22/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/27/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/12/07 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.3 1 12/12/07 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.3 1 06/17/08 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.5 J 0.3 1 lc,cc 11/05/08 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.4 J <0.3 <0.3 0.3 05/19/09 <0.27 <0.27 <0.27 0.55 J <0.27 <0.27 <0.27 <0.27 <0.27 0.27 1 11/18/09 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 0.27 1 06/21/10 <0.053 <0.053 <0.053 <0.053 <0.053 <0.053 <0.053 <0.053 <0.053 0.053 1 11/18110 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 <0.27 0.27 1 injection event(03.29-11) 05/23H 1 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 0.85 1 08/23/11 <0.85 <0.85 <0.85 <0.85 0.85 1 injection event(09-28-11) 11/15/11 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.85 <0.65 0.85 1 02/21/12 <0.14 <0.14 <0.14 <0.14 0.14 1 injection event(04-14-12) 06/05/12 0.54 J <0.14 <0.14 0.49 J <0.14 <0.14 <0.14 <0.14 <0.14 0.14 1 10/09/12 <0.14 <0.14 <0.14 <0.14 0.14 1 injection event(09.13-12) 11/12/12 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 1 02118/13 <0.14 <0.14 <0.14 <0.14 0.14 1 05/13/13 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.14 1 m o n A n n tons N cC.' c J 0 2 CD a N o 0 o w P• N 0 to (' " 4 co N N O P O-P O P O_O O 0 0 O O 0 0 0 0 O 0 0 0 C a'N`O_Sp 'mc"7_L__u L" �' -. 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N- 0 m O cD r!V Ci CT CR u A A N-•O AAAAAAAAA A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A -L gC O O P O PO OOP OOO P m 0 mCH Cn0 0Cn(],0 Cn U,CJI CT CA Cn00 CC(n CACnCnCnC„0 N N N N m COI,m V 7 V J' `-"0 0 0 0 0 0 O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0[D m A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA n oothmmmmumm0p1m0m ovicncncnmmm oucnulp0mmp N N N Ci, (i, (n '' O O O O O O O O O O O O O O O O O o O O O 0 O O O 0 O O O o Cn f Ts 0 r 0 0 0 O o O O o 0 0 A A A A A M1 n A n A n M1 A A A M1 A A M1 A M1 n h M1 h h A n M1 A M1 n A A m O p 33 W Q,Pc'N o000 V,(n N(7�U,M Cn(nwp �J,(T Cn(n4�fT C�CC,�T�NN(TC U,(TU+thfh ()ny N N N n Cn rl CT V r[J- 1 -�0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 V— 2 °0 GSOnm T 061 xzoz xj3 0 c1 A A A A A A A A A n A A A A A A A A A A A A A A A A A A A A A A A A A A A A A g O O O O d d tl o tltldo© zx _ O O O O IT lJl CS,CT CT Vt V1 V,VI[]1 CT VI N V1 N Vl V1 fT C31 Ci,(ll[T N N fT(], D � N N. N [ii COn V Cn V v"" - 0 0 000 0 00000 0 000 000 0000 0000 C z m O ro ii0 p.m m r o .. - - Om -E 00 m 3 zM S'FOz A AAAAAAAAAAAAA ALA A A A A nN r z-J P P P P a P O P P O O O P A h h n A A n A n n n n n n n A n A n 3_ y _ __ _ OO P PC„Chobb o fJ,Cflboo bbb q O r N N NNN NCPi,C01,(Q'n rNl[n V V"""�"OO GOOO00000000 ';' 2r Zor..O a _ ZZ 0--1Z0 -4> xxOx Mp C o 0 0 0 A O o AO A 0 0 o A AAA A A A A A A A A AA A A A A N cn 0 n r Z _ aOdoolLncncnunulmoomv.v, m x O N N N N N NCdf�C�nN V W V V' 11 OOOOOO00000000 N �OZ m N ZO D-4 n 2 A A A A AAAAAAAAAAAAAAAAAAAAAAA g g TC o d d a- oodoPOOOPu�ina,cncnincncnPcncnina,cn n I V N N C" COi V c n V J""0 0 0 0 0 0 0 0 0 0 0 0 P P N n N F- A A A A A A A A A A A A A g 0 o 0 0 0 o O P O O o O Po 0 0 0 N N NNN N W Con C V V V fon C„ 1' w 0 0 0 0 0 0 0 0 0 0 0 0 0 00 W G>M N N N N N N N N N N 0 Cr M rl Cn rl rE ' a P O O O O O O P P O O P P O O a O r N N NNN Na C.U 0V CT V V inn ." J O- CI) cn r r 0 0 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Semple MW-15 MW-16 MW-17 MW-20 MW-21d MW-21s MW-22 MW-23 MW-24 LOD SWSL OAQC Date trichloroethene 04/17/90 1 <5.0 <5.0 MCL=5 07/11/91 , <5.0 <5.0 MAC=1(SWSL) 05/28/92 16 <5.0 <5.0 NCGOS=3(2L Sid) 06/30/93 24.4 <5.0 <5.0 • 2L Sid=2.8(pre-Jan.2010) 11/04/94 22 <5.0 <5.0 <5.0 2L Slid=3(Jan.2010) 12/20/94 9 <5.0 <5.0 <5.0 02/02/95 19 <5.0 <5.0 <5.0 03/13/95 13 <5.0 <5.0 <5.0 I 11/15/95 14 <5.0 <5.0 <5.0 07/25/96 33 <5.0 <5.0 <5.0 02/25/97 30 <5.0 <5.0 <5.0 09/03/97 31 <5.0 <5.0 <5.0 05/04/98 21 <5.0 <5.0 <5.0 11/02/98 23 <5.0 <5.0 <5.0 04/26/99 12 <5.0 <5.0 <5.0 11/22/99 8 <5.0 <5.0 <5.0 05/23/00 10 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/29/00 6 <5.0 <5.0 <5.0 5 <5.0 <5.0 06/05/01 7 <5.0 <5.0 <5.0 <5.0 5 <5.0 11/13/01 <5.0 <5.0 <5.0 <5.0 <5.0 6J <5.0 cc 06/04/02 <5.0 5 <5.0 <5.0 <5.0 7 <5.0 03/12/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06118/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 12/08/03 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/22/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11130/04 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 I 06/01/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/02/05 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 05/22/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 11/27/06 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 06/12/07 <0.1 1.9 <0.1 <0.1 <0.1 <0.1 <0.1 4.2 0.1 1 12/12/07 0.3 J 1.4 <0.1 <0.1 0.8 J 0.9 J <0.1 2.3 0.1 1 06/17/08 <0.1 1.7 J <0.1 <0.1 1.1 J 1.4 J <0.1 3.6 J <0.1 0.1 1 lc,cc 11/05/08 1 J 0.8 J <0.1 <0.1 0.6 J 1 J <0.1 3.4 0.9 J 0.1 1 05/19/09 <0.38 1.1 <0.38 <0.38 0.94 J 1.2 <0.38 3.6 1.3 0.38 1 11/18/09 <0.38 1.2 <0.38 <0.38 0.76 J 1.1 <0.38 4.4 1.1 0.38 1 06/21/10 • <0.13 1.1 <0.13 <0.13 0.64 J 0.9 J <0.13 3 0.88 J 0.13 1 11/18/10 <0.38 0.7 J <0.38 <0.38 0.69 J 0.87 J <0.38 3.2 1 0.38 1 injection event(03-29-11} 05/23/11 <0.72 0.79 J <0.72 <0.72 <0.72 0.75 J <0.72 4 1.1 0.72 1 08/23/11 <0.72 0.91 J 3 1 0.72 1 injection event(09-28-11) 11/15/11 <0.72 <0.72 <0.72 <0.72 <0.72 0.8 J <0.72 2.2 1.1 0.72 1 02/21/12 • 0.61 J 0.6 J 2.8 D.73 J 0.15 1 Iiection event(04-14-12) 06/05/12 <0.15 0.44 J <0.15 <0.15 0.45 J 0.56 J <0.15 2 0.74 J 0.15 1 10/09/12 <0.15 0.52 J 0.71 J 0.89 J 0.15 1 injection event(09-13-12). 11/12/12 <0.15 0.55 J <0.15 <0.15 0.48 J <0.15 <0.15 0.95 J 0.89 J 0.15 1 02/18/13 0.48 J <0.15 2 0.92 J 0.15 1 05/13/13 <0.15 0.58 J <0.15 <0.15 <0.15 <0.15 <0.15 2 0.75 J 0.15 1 1 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL•NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS Constituent Sample MW-15 MW-16 MW-17 MW20 MW-21d MW-21s MW22 MW23 MW-24 LOD SWSL OAJOC Date vinyl chloride 04/17/90 <10.0 <10.0 MCL-2 07/11/91 <10.0 <10.0 FBAC=1(SWSL) 05/28/92 <10.0 <10.0 <10.0 NCGOS=0.03(2L S1d) 06130/93 <10.0 <10.0 <10.0 2L Std=0.015(pre-Jan.2010) 11/04/04 <10.0 <10.0 <10.0 26 2L Std=0.03(Jan.2010) 12/20/94 <10.0 <10.0 <10.0 <10.0 02/02/95 <10.0 <10.0 <10.0 20 03/13/95 <10.0 <10.0 <10.0 20 11/15/95 <10.0 <10.0 <10.0 13 J is 07/25/96 <10.0 <10.0 <10.0 43 J cc 02125/97 <10.0 <10.0 <10.0 11 09/03/97 10 R <10.0 <10.0 15 05/04/98 <10.0 <10.0 <10.0 10 11/02/98 <10.0 <10.0 <10.0 17 04/26/99 <10.0 <10.0 <10.0 <10.0 11/22/99 <10.0 <10.0 <10.0 17 05/23/00 <10.0 <10.0 <10.0 10 <10.0 <10.0 <10.0 11/29/60 <10.0 <10.0 <10.0 12 <10.0 <10.0 <10.0 06/05/01 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/13/01 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/04/02 10 J <10.0 <10.0 10 J <10.0 <10.0 <10.0 sr 03/12/03 17 J <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 ht 06/18/03 14 J <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 ic,cc,ss 12108/03 13 J <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 ic,cc 06/22/04 12 J <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 is,cc 11/30104 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/01/05 16 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11/02/05 15 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 05/22/06 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 11,27/06 22 <10.0 <10.0 <10.0 <10.0 <10.0 <10.0 06/12/07 13.1 3.9 <0.1 2.4 4 1.2 0.7J 4 0.1 1 12/12/07 16.5 2.1 <0.1 2 2.4 0.4 J 0.87 J 4.4 0.1 1 06/17/08 12.8 J 4J <0.1 1.8 J 3.4 J 1J 0.7 J 2.9 J 0.3 J 0.1 1 lc,cc 11/05/08 14.6 2 <0.1 1.5 3.5 2.5 <0.1 3.4 3.3 0.1 1 05/19/09 12 2.3 <0.3 0.6 J 3.2 2.9 0.78 J 2.7 1.6 I 0.3 1 11/18/09 12 3.4 <0.3 0.84 J 3.6 2.9 1.6 4.8 2.5 0.3 1 06/21/10 8.7 1.9 <0.083 0.69 J 2.5 1.6 0.7J 1.6 0.62 J 0.083 1 11/18/10 13 2.3 <0.3 0.79 J 3.8 0.56 J 1.2 4.7 1.9 0.3 1 injection event(03-29-11) 05/23/11 8.2 1.1 <0.6 <0.6 2.6 1.2 <0.6 2.4 <0.6 I 0.6 1 08/23/11 1 3.3 2.4 3.6 1.1 0.6 1 injection event(09-28-11) 11/15/11 10 1.4 <0.6 <0.6 1.7 <0.6 1.2 1.6 1.5 0.6 1 02/21/12 2.9 1 2.6 1 0.32 1 injection event(04-14-12) 06/05/12 9.7 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 0.32 1 10/09/12 <0.32 0.96 J 1.1 0.32 1 injection event(09-13-12) 11/12112 12 1.2 <0.32 0.62 J 1.2 <0.32 1.4 <0.32 1.6 0.32 1 02/18/13 7.4 <0.32 2 0.32 1 05/13/13 12 1.3 <0.32 <0.32 2.2 <0.32 1.2 0.78 J <0.32 0.32 1 I CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS ORGANIC CONSTITUENTS All results In Ugl. Upgradient wells not shaded. Shaded cells indicate data not available. Blue bolded cells indicate concentrations that exceeded the FBAC. Red bolded cells indicate concentrations that exceeded the NCGQS. Green bolded cells indicate concentrations that were›LOD but SSWSL. I•found in Instrument blank t—found in trip blank f•found in field blank lc-Initial calibration beyond limits cc—continuing calibration beyond limits rod•matrix spike duplicates beyond limits ss-•surrogate spikes beyond limits is-internal standard beyond limits ce-confirmation value beyond limits J•concentration deemed estimated B—concentration attributed to cross-contamination R-concentration deemed unreliable sr•sample results of a duplicate are below detection limits ht-sample holding time was exceeded a -additional Appendix 2 constituent ♦-limits not established FBAC-facility background NCGQS—groundwater standard,as established by NCDENR SWSL—Solid Waste Section Limit,as established by NCDENR SPL—statistical prediction limit GWPS-groundwater protection standard CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS Constituent Sample Date MW-15 MW-16 MW-17 MW-20 MW-21D E MW-21S MW-22 MW-23 MW-24 LOD SWSL QA/OC antimony 04/17/90 MCL=6 07/11/91 FBAC e 6(SWSL) 05/28/92 NCGOS=I (GWPS) 06/30/93 GWPS-1.4(pre-Oct.2010) 11/04/94 cc,i,ms GWPS=1 1Oct.2010) 12/20/94 1 02/02/95 03/13/95 ms 11/15/95 ms 07/25/96 i,1,ms 02/25/97 i 09/03/97 05/04/98 i 11/02/98 i 04/26/99 11/22/99 q 05/23/00 q 11/29/00 g 06/05/01 11/13/01 ms 06/04/02 03112/03 06/18/03 12/03/03 06/22/04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 12/12/07 <1.2 <1.2 <1.2 1.3 JB <1.2 <1.2 <1.2 1.2 6 i 03/06/08 1.2 6 06/12/08 4 JB <1.2 <1.2 1.8 JB <1.2 2.2 JB <1.2 1.4 JB 1,9 JI3 1.2 6 i 11/05/08 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 6 05/19/09 <0.68 <0.68 <0.68 <0.68 <0.68 <0.68 <0.68 <0.68 <0.68 0.68 6 11/18/09 <0.073 <0.073 <0.073 <0.073 <0.073 0.089 J <0.073 <0.073 0.337 J 0.073 6 06/21/10 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.22 6 11/18/10 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.22 6 05/23/11 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.22 6 11/15/11 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.22 6 i 06/05/12 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.22 6 i 11/12/12 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.642 J <0.22 0.22 6 05/13/13 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <-0.22 <0.22 0.22 6 co 0 a E E E� .- - '- Q a a E J cn 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r r r .- .- .- .- r r ..- r- 4.0 In u)N u)000 CO Op CU CClm 00 V Q .. 0 0 Ui.n u7 CN N CH N N C4 N N Yi J 41 4100D0 aON 00 G700 V _ to In N N N N N N N N to V V V V V V V V V V V n m _ N In Sn lit 00 m 00 CO CO CO W ,t u] In to N N N N N N N 6 ui ii V V V V a? 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F A E 0 0 0 0 0 0 0 0 p 0 0 `2 N N N W I 0 0 0 no 0 0 0 0.0 0 W N N A co 0 p 0 0 p a 0 a a o O a 0 r pap N N N N N 0 Cto cn r r 0 n CLIENT; THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM , HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS Constituent Sam*Date MW-15 MW-16 i MW-17 MW-20 MW-21D MW-21 S MW-22 MW-23 MW-24 LOD SWSL QA/OC cadmium 04/17/90 <2 <2 MCL=5 07/11/91 <2 4.5 ' FBAC=1(SWSL) 05/28/92 <2 <2 <2 NCGOS=2(2L Std) 06/30/93 3.3 2.4 <2 2L Std=1.75(pre-Jan.2010) 11/04/94 <1 2B <1 2B cc,i,f 2L Std-2(Jan.2010) 12/20/94 <1 <1 <1 <1 02/02/95 <1 <1 <1 <1 1 03/13/95 1.2B 1.4B 1.3B <1 f,t 11/15/95 <1 <1 1 B <1 ms,t 07/25/96 c1 <1 <1 <1 02/25/97 <1 <1 c1 <1 i,f 09/03/97 <1 <1 <1 <1 05/04/98 6.2 B 4.0 B 1.0 B <1 f,t 11/02/98 <1 <1 1.2 B <1 1,1 04/26/99 <1 <1 <1 <1 c ,i 11/22/99 <1 <1 <1 <1 Ics,i 05/23/00 4 B <1 <1 <1 <1 <1 <1 i,t,f 11/29/00 <1 <1 <1 <1 <1 <1 <1 i,q 06/05/01 <1 <1 1 <1 <1 <1 2 11/13/01 1 B <1 <1 3 B <1 <1 <1 to,i,i,t 06/04/02 <1 <1 8 B <1 <1 <1 <1 d,i,t,i 03/12/03 <1 <1 <1 <1 c1 <1 <1 06/18/03 1 B <1 <1 <1 <1 c1 <1 t 12/08/03 <1 <1 1.6 <1 <1 <1 c1 06/22/04 <1 <1 <1 <1 <1 <1 <1 11/30/04 <1 c1 c1 <1 <1 <1 <1 06/01/05 <1 <1 <1 <1 <1 <1 <1 11/02/05 <1 <1 <1 <1 <1 <1 <1 05/22/06 <1 <1 <1 <1 2 <1 <1 11/27/06 <1 <1 <1 <1 <1 <1 <1 06/12/07 0.9 J <0.2 <0.2 19.9 <0.2 0.6 J 0.7 J 0.7 J 0.2 1 12/12/07 <0.2 <0.2 0.2 JB <0.2 0.2 JB <0.2 <0.2 0.2 1 03/06/08 0.2 1 06/12/08 <0.2 0.2 JB 0.3 JB <0.2 <0.2 <0.2 <0.2 <0.2 0.3JR 0.2 1 Li 11/05/08 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 0.6 JB 0.2 1 05/19/09 0.1 J 0.22 J 0.2 J 1.75 0.1 J <0.09 0.16 J <0.09 0.16 J 0.09 1 11/18/09 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 06/21/10 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 • 11/18/10 <0.36 <0.36 <0.36 1.23 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 05/23/11 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 11/15/11 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 06/05/12 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 11/12/12 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 05/13.113 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 0.36 1 CLIENT: THE COUNTY OF ORANGE FACILITY' ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS Constituent Sample Date MW-15 MW-16 MW-17 MW-20 MW-21D MW-21S MW-22 MW-23 MW-24 LOD SWSL OAIOC chromium 04/17,90 <20 <20 MCL-100 07/11/91 <20 <20 FBAC=10(SWSL) 05/28/92 <20 <20 <20 NCGOS=10(2L SW) 06/30/93 <20 <20 <20 2L Std-50(pre-Jan.2010) 11/04/94 <10 33 <10 32 1 2L Std=10(Jan.2010) 12/20/94 <10 12 <10 16 02/02/95 <10 <10 <10 12 03/13/95 <10 <10 <10 <10 1.1 11/15/95 <10 <10 <10 20 I 07/25/96 <10 <10 17 B <10 f,l,rrs 02/25/97 <10 <10 <10 <10 09/03/97 <10 <10 <10 <10 05/04/98 <10 <10 <10 <10 I 11/02/98 <10 <10 <10 <10 04/26/99 <10 <10 <10 <10 11/22/99 <10 <10 <10 <10 05/23/00 <10 <10 <10 10 B <10 <10 <10 I,q 11/29/00 <10 <10 <10 <10 <10 <10 <10 i,l,q 06/05/01 <10 <10 <10 <10 <10 <10 <10 cc,t,l 11/13/01 <10 <10 <10 <10 <10 <10 <10 06/04/02 <10 <10 <10 <10 <10 <10 <10 03/12/03 <10 <10 <10 <10 <10 <10 <10 06/18/03 13 <10 <10 <10 <10 <10 <10 12/08/03 <10 <10 <10 <10 <10 <10 <10 06/22/04 <10 14 <10 <10 <10 <10 <10 11/30/04 <10 <10 <10 <10 <10 <10 <10 06/01/05 <10 <10 <10 <10 <10 <10 <10 11/02/05 <10 <10 <10 <10 <10 <10 <10 05/22/06 <10 <10 <10 <10 <10 <10 <10 11/27/06 <10 <10 <10 <10 <10 <10 <10 06/12/07 10.8 <0.7 2.7 JB <0.7 1.9 JB 2.2 JB 2.2 JB 103 R 0.7 10 1,1 /2112/07 6.7 JB <0.7 1.9 JB <0.7 <0.7 <0.7 <0.7 0.7 10 i 03/06/08 0.7 10 06/12/08 6.7 J <0.7 1.6 JB <0.7 <0.7 <0.7 <0.7 <0.7 129 R 0.7 10 t 09/20/08 24 J 0.7 10 11/05/08 7.8 J <0.7 2.3 JB <0.7 <0.7 2.2 JB 1.8 JB <0.7 1.2 JB 0.7 10 I,I 05/19/09 7 J 1.3 J 2.2 J <0.7 1.6 J 5.1 3 1.4 J 1.2 J 1.3 J 0.7 10 11/18/09 <1 2.87 JB <1 <1 1.37 JB 7.49 JB <1 2.68 JB 1.81 JB 1 10 06/21/10 <1 <1 <1 <1 1.28 J 9.64 J <1 3.44 J 2.83 J 1 10 11/18/10 <1 <1 <1 <1 <1 1.26 J <1 1.6 J 3.67 J 1 10 05/23/11 8.29 J <1 2.48 J <1 1.44 J 4.62 J 1.12 J <1 <1 1 10 11/15/11 5.83 J <1 2.33 J 1.81 J 3.82 J 2.77 J <1 9.8 J <1 1 10 06/05/12 8.15 J 1.39 J 3.21 J <1 4.32 J 2.43 J 2.03 J 35.9 3.55 J 1 10 11/12/12 3.85J <1 1.14J <1 21.6 17.8 1.34J 60.1 4.13J 1 10 05/13/13 <1.4 <1.4 <1.4 <1.4 8.48 J 88.8 <1.4 65.3 4.34 J 1.4 10 1 Q o a J 00000000000000 0 • - • I, r-n r-- r� A 0 0 000 6 - .- ,- .- .- .- .- w - rn ; 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AAAANA ^ AA �' AAAAAAAAAAAAAAA 0f m OAA NVNNNNNNNNNNNNNNb, 17 6,Ab, mNN 33 4,O o 0 0 0 0 6 0 0 0 6 o O O j r z m m o 0 0 0 0 0 6 0 0 0 o 0 0 0 > O Z p 0 �4 M 4 = T A A A A A A A A O A A A N N N N N N N N N N N N N N g A pp N N N w 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N r .A., _. .A,.��a m_L A A A — . O b) W W T`W 6W pip N g W A A A A A m_. A 0 W W �{ W o b m a b c. Co a n o r O] W O][y N N N N N 0 0 00000000000000 N r D _. ,— - a - - a N U 0 .- J ' U) O O O O O O O O O O O O O O to N O • - to co co C4 CI CO C)Ch r 0 N N N N N C V J a N ''m-4arnm�rna?a;mr mmCI .- aa.- r ni (Si CI .. V V r• V V V V V • CI nt - :J N r0 a? O)C?W C:a1 C; r V v v v v v V v v v v } r cv CO J N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 m N N CI"I CR m°I a) a l 0? R v V V V V V V V V Y V V V V V Y V v v v v v v v v v oi LL 2 S < - d Z III CO ZJ 0 Q H o 0 0 p 0 0 0 p 0 0 0 0 0 O m N N N cc: a] co co co co ( cc F- L'ry J 0 d N h V V V V V V V V V v V Y V V N v v v V Y� V V V V V zJ 4C3 . 2 GI r ozz -o z0 0 S H Q W h CO O P co O O O O O O O co 0 0 P m N N N Qn C 1 C]01 C 1 01 61 Cn r J z 0 Q o, v v v v v v v v v v v v v v N v v v v v v v v v v v V Z 0 J 2 U Z 2 O_ ¢ Uu.l S F- I I- W a Q'} ILcl N o 000 00000 00000000000000000 ca m p Ef m 0rN min.co a) p N S o- 4 0 O Z V v v V v v V v v V V v v v V v V v V V V V v V V v N •n r r r ei .- •V V V � zt) � r0 6 Z CC O U .. 00 w O 0 0 N Z w rn rn Cr?a m w rn _� 0„CD,ao0000000000000000000000000-] ,y 0,0, 4 (Qj)U SO V VT? V v v v v v v V v v V v V V v V v v v V v v v v v v v 0. v v V v v V v v V v v v CC OJ z O O cc 0_ J 0In IA 00 o OPp 0000 0 0 0000000000000000 W N N N u:I..0 W a?a? a10 a) U v v V v v v v v v v v v v v v v v v v v v v v v v v v v v v 0 v v v v v v v v v v v V Q • u. _O N O O_ O®O O O O O P O P P Q P p P P O p p P O p C a O m�y m ,�o m a? m V V V v V Q' v v v v v v v Y V V v V V v V v Y v V V v Y M ry v ca p n N N e''I n V V V 'f N V w 0 O N co aCl)0 s In III f0 I--F.-m CO CI CI 0 0 N CI C)C) V VI 11 CO CO n V. OD 0 CO C)C) 0 0,- r CM N C) 0 0 0 O 0 m a)a)CI CI a)CI CI CD go go C)0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 QQ 0 0 0 0 0 co I= —; o 425 54.6 0 U5 o 4 0 N[7 a>0 rn N6co NO to NNr- OQ to N u)aaa Z55 VI InN M N CID N Or 41 00 O NNNNO .- O O NM O fI N O P rN iI r0 r Earam in iorn,-c00_-0 a0 ur4rnr r3_-000 4®r0 ,-0r 0a r'm .- u0 r ut 0rm u0i ▪ 0 a 0 0 r r o 0 r 0 0 0 0 r 0 r o r 0 r 0 0 o r 0 r 0 r 0 r o T- CI o o,-p P r p. C) (11 C b as a to in .I N o• y in O .0 h u to II ,er ccv co aU CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS • Constiluenl Sample Date MW-15 MW-16 MW-17 MW-20 MW-21D MW-21S MW-22 MW-23 MW-24 LOB SWSL QA/QC mercury * 04/17/90 <0.2 <0.2 MCL=2 07/11/91 <0.2 <0.2 FBAC=0.2(SWSL) 05/28/92 <0.2 <0.2 <0.2 NCGQS=1(2L SW) 06/30/93 <0.2 <0.2 <0.2 2L Sid=1.05{pro-Jan.2010) 11/04/94 - 2L Sid=1(Jan.2010) 12'20/94 02/02/95 03/13/95 11/15/95 07/25/96 <0.5 <0,5 02/25/97 <0.5 <0.5 <0.5 <0,5 09/03/97 05/04/98 11/02/98 0.5 <0.2 <0.2 <0.2 04/26/99 0.6 B 0.2 B 0.3 B 0.3 B d,i 11/22/99 0.3 B 0.3 B <0.2 <0.2 i 05/23/00 0.5 J <0.2 0.6 J 0.4 J 0.7 J <0.2 <0.2 d,cc 11/29/00 <0.2 <0.2 0.4 J <0.2 1.0 J <0.2 <0.2 d 06/05/01 <0.2 <0.2 <0.2 <0.2 1.0 <0.2 <0.2 11/13/01 06/04/02 <0.2 <0.2 <0.2 <0.2 1.4 <0.2 <0.2 03/12/03 <0.2 <0.2 <0.2 <0.2 1.0 <0.2 <0.2 06/18/03 <0.2 <0.2 <0.2 <0.2 0.6 <0.2 <0.2 12/08/03 <0.2 <0.2 <0.2 <0.2 0.5 <0.2 <0.2 06/22/04 <0.2 <0.2 <0.2 <0.2 1.1 <0.2 <0.2 11/30/04 <0.2 <0.2 <0.2 <0.2 1.1 <0.2 <0.2 06/01/05 <0.2 <0.2 <0.2 <0.2 0.6 <0.2 <0.2 11/02/05 <0.2 <0.2 <0.2 <0.2 3.6 <0.2 <0.2 05/22/06 <0.2 <0.2 <0.2 <0.2 1.9 <0.2 <0.2 11/27/06 <0.2 <0.2 <0.2 <0.2 1.48 0.48 <0.2 06/12/07 <0.01 <0.01 <0.01 <0.01 1.8 0.33 <0.01 0.74 0.01 0.2 12/12/07 <0.01 0.04 JB <0.01 <0.01 3.2 0.201 B 0.06 JB 0.01 0.2 i 03/06/08 0.01 0.2 06/12/08 0.14 JB 0.17 JB 0.08 JB 0.09 JB 1.8 0.37 B 0.16 JB 0.6 B 0.01 0.2 I 11/05/08 0.18 JB 0.08 JB c0,01 <0,01 2.2 0.12 JB <0.01 0.6 B 0.12 JB 0.01 0.2 f,1 05/19/09 <0.05 <0.05 <0.05 <0.05 2.16 0.81 <0.05 0.06 J <0.05 0.05 0.2 11/18/09 <0.054 <0.054 <0.054 <0.054 3.3 1.59 <0.054 0.482 <0.054 0.054 0.2 06/21/10 <0.17 <0.17 <0.17 <0.17 1.9 2.7 <0.17 <0.17 <0.17 0.17 0.2 1 11/18/10 <0.17 <0,17 <0.17 <0.17 3.13 1.64 <0.17 0.755 <0.17 0.17 0.2 injection event(03-29-11) 05/23/11 <0.17 <0.17 <0.17 <0.17 1.77 1-52 <0.17 0.344 <0.17 0.17 0.2 08/23/11 2.23 2.37 1.48 <0.17 0.17 0.2 injection event(09-28-11) 11/15/11 <0.17 <0.17 <0.17 <0.17 2.95 0.748 <0.17 1.74 <0.17 0.17 0.2 02/21/12 'injection event(04-14-12) 06/05/12 <0.17 <0.17 <0.17 <0.17 0.981 0.467 <0.17 0.652 <0.17 0.17 0.2 10/09/12 injection event(09-13-12) 11/12/12 <0.17 <0.17 <0.17 <0.17 7.6 1.34 <0.17 3.07 <0.17 0.17 0.2 02/18/13 I 05/13/13 <0.17 <0.17 <0.17 <0.17 2.1 1.25 <0.17 0.417 <0.17 0.17 0.2 p h z -r12. C) 0 a1A 0 0 , m 01 0 o 0 o o N w '' , m CA 4 0"O "O"O " 0 0 0 0" 0 "0 "0" 0 0 0 0 0 - 0 0 0 0 0" 0 0 -0 0 0 O - O N 1,-, O N-,O N N O o W N O-+ -•oo 6 N N N N 0 0 0 N N- O N O a N W 1Q M M W M _m M M O N M N Q v N N O N W M N A W ST M W N O N A W O O VI W N O A O NL " V M O M W O 0 4 O W W W A A O N O 0 O O D O O O A O0 WNN " " 000OW W WW . 71OOmW JTMAAWN"O a ID m s m O +1 AN� G � f A a A A n A A A A A A A A A A A A A A n A A A A A ' �00 ^ �c ' JC N0 0 0VNJ0VT( OnT � IT L L 000000000000000000000000 L, LLCCLLC.C.0 y 71 D FV rp1 4J GJ N N A A �"� r.7 A A (A,f A {A,f� A A A A A A h n A A A A A A An A A A [A�A A A n h A n L`` W L L, L ;0 0 0 0 0 0... ..........0 0 0 0 0.0..0. _ F mc- v < M 0 0 Z L. O = ..- A W m,,i' VNi A 1V A A (A�A h A A A n A A A A A A A A A A A A n h A A n n A n n V 0 n n z b,L�L L�L,LQJ , m,0 0�a 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0(Cl(Cl 0 S 0 f O 2 -i- m 0 z'711 mz� z �� oric - z A A A m A 1 A A 0 N 4, N A A A �A1[A,n A A A A A A A A A A A A A A A AA AAA A z p o y j i m m L m C 0o C.C.C. L W L 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 m r j m -IX --VT 0 0 m m m 3 0 r AAAAAAAAPA A P n f7 z r - A A A n n n A A A A n A n - -n z z r oo6, 606o6,6CO W LQ) w ,m0000000000000 � -aD 740yn O O z O - z 0 -ID zzom r { z0 - p r z A A A FF A 0 0 a J PO .'Np '' A A A A A A A A A A A A A A `L m N m o r n, m li W Oti (%1 ` `fF1`L L L L 0 0 0 0 0 0 0 0 0 O O 0 0 0 Z D fn XL73 D m A .A.. A A !V W 7' 7' A A A A A A A A A A A A A A * 0 6,60 W Cp[O 6J CO 01 L w.L O 0 0 0 0 0 0 0 000000 N F { A A A A A A J A 0 A A C ! -CP 0 m `r inmminmmc.mc_on m w w J O w A N A J P J Fa L O ,_ C.6.W L OD 0o L 0 L, A O 4 4 0 0 0 0 0 WW6oiamWmW nmoi�[no>br O 0 000o8o0S8o888 0 0 r 0 _. _. _. _ 0 a 0 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS r Constituent Sample Date MW-15 MW-16 MW-17 _ MW-20 MW-21D MW-21S MW-22 MW-23 MW-24 LOD SWSL QA/OC selenium 04/17/90 MCL=50 07/11/91 I FBAC= 10(SWSL) 05/28/92 NCGOS=20(2L Std) 06/30/93 2L Sid=50(pre-Jan.2010) 11/04/94 2L Sid=20(Jan.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07/25/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 06/05/01 11/13/01 06/04/02 03/12/03 06/18/03 12/08/03 06/22/04 11/30/04 06/01/05 11/02/05 05/22/06 11/27/06 06/12/07 12/12/07 6.7 J <6.3 8.5 J <6.3 <6.3 <6.3 <6.3 6.3 10 03/06/08 6.3 10 06/12/08 <6.3 <6.3 6.5 J <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 6.3 10 11/05/08 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 6.4 JB 6.3 10 V 05/19/09 <3.4 <3.4 <3.4 <3.4 3.8 J <3.4 <3.4 <3.4 4.4 J 3.4 10 11/18/09 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 2.7 10 06/21/10 10.2 2.56 J 6.3 J 34.2 3.74 J 3.1 J 4.74 J 2.65 J 3.85 J 0.83 10 11/18/10 7.14 JB <2.7 <2.7 8.83 JI3 <2.7 <2.7 <2.7 <2.7 <2.7 2.7 10 i 05/23/11 10.3 3.99 J 8.33 J . 37.6 3.33 J 278 J 6.24 J 3.34 J 3.92 J 0.83 10 11/15/11 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7 2.7 10 i 06/05/12 <0.83 <0.83 <0.83 1.02 J <0.83 0.84 J <0.83 <0.83 <0.83 0.83 10 11/12/12 <0.83 <0.83 <0.83 <0.83 1.6 J 4.93 J <0.83 <0.83 <0.83 0.83 10 05/13/13 <0.91 <0.91 <0.91 0.961 J <0.91 6.35 J <0.91 <0.91 <0.91 0.91 10 0 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: GROUNDWATER MONITORING PROGRAM HISTORY OF CHEMICAL ANALYSIS INORGANIC CONSTITUENTS: TOTAL METALS Constituent Sample Date MW-15 MW-16 MW-17 MW-20 MW-21D MW-21S MW-22 ` MW-23 MW-24 LOD SWSL OA/OC silver 04/17/90 MCL= ♦ 07/11/91 FBAC= 10(SWSL) 05/28/92 NCGQS=20(2L Ski) 06/30/93 2L Std=17.5(pre-Jan.2010) 11/04/94 2L Std=20 IJan.2010) 12/20/94 02/02/95 03/13/95 11/15/95 07125/96 02/25/97 09/03/97 05/04/98 11/02/98 04/26/99 11/22/99 05/23/00 11/29/00 <10 <10 <10 <10 <10 <10 11 B i,t,f 06/05/01 <10 <10 <10 <10 <10 <10 <10 I t.f 11/13/01 <10 <10 <10 <10 <10 <10 <10 1,1 06104/02 <10 <10 <10 <10 <10 <10 <10 03/12/03 <10 <10 <10 <10 <10 <10 <10 06/18/03 <10 <10 <10 <10 <10 <10 <10 12/08/03 <10 <10 <10 <10 <10 <10 <10 06/22/04 <10 <10 <10 <10 <10 <10 <10 11/30l04 <10 <10 <10 <10 <10 <10 <10 06/01/05 <10 <10 <10 <10 <10 <10 <10 11102/05 <10 <10 <10 <10 <10 <10 <19 05/22/06 <10 <10 <10 <10 <10 <10 <10 11/27/06 <10 <10 <10 <10 <10 <10 <10 06/12/07 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 1.1 10 cc 12/12/07 1.3 J <1.1 1.2 J <1.1 <1.1 <1.1 <1.1 1.1 10 03/06/08 1.1 10 06/12/08 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 1.1 10 Li 11/05/08 <1.1 <1.1 <1.1 <1.1 <1,1 <1.1 <1.1 <1.1 <1.1 1.1 10 1 05/19/09 2.8 J <1 1 J <1 <1 <1 <1 <1 <1 1 10 11/18/09 4.6 J <1.9 2.7 J <1.9 2.37 J 2.39 J 2.79J 1.91 J 2.23 J 1.9 10 06/21/10 <1.9 <1.9 <1.9 3.65 J <1.9 <1.9 <1.9 <1.9 <1.9 1.9 10 11/18/10 4.12J <1.9 2.74J 5SJ 1.92J <1.9 247J <1.9 2.02J 1.9 10 05/23/11 3.86 J <1.9 <1.9 2.96 J <1.9 <1.9 <1.9 <1.9 <1.9 1.9 10 11/15/11 2.44 J <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 1,9 10 06/05/12 3.77 J <1.9 2.93 J <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 1.9 10 11/12/12 2.29 J <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 1.9 10 05/13/13 2.79 J <1.9 <1 9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 1.9 10 0 `—' u m E a a a o u a E E E GO O O O O O O O O O co 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O o 0 0 0 0 0 0 0 0 0 0 0 0 CO CD O ggggggm.0000oo l N N N N N rn N 0 0 0 0 0 0 CD V V CO V V V V V V M N 0 0 O 0 0 0 0 0 0 NV V CO V V V V V V V N J N 0 0 0 3 3 3 0 0 0 0 0 0 0 0 CD CD CD A CD CD Q I O 0 CD CD CD O 0 0 CD,.00 0 0 0 0 01 N N N 0 0 NCI"N N N y N N N N N O] V V V V V Y V V V V V pc y rn V V V V V V V V N U.▪ 2 2 . • Q C3 z p GO I d 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Z ..l� h., CV O Ira 000S o00Sn0o0 000M t'1 LU • 0 C. m W 3i N N N O N m N N N n Ky N N V V V V V V V V V V V(0 V V V V SiV V-Si Si.' 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Application Number(to be completed by DWQ): \1\11.. OSCOa Cl • GENERAL INFORMATION: 1. Applicant's Name(generally the responsible party): Orange County Solid Waste Management 2. Signing Official's Name*: Gayle Wilson Title: Director, OCSWM * Signing Official must be in accordance with instructions in part VI on page 7. 3. Mailing address of applicant: P.O. Box 17177 City: Chapel Hill State: NC Zip: 27516 Telephone number: (919)968-2788 Fax number: (919)932-2900 4. Property Owner's Name (if different from Applicant): 5. Property Owner's mailing address: City: State: Zip: 6. Name and address of contact person who can answer questions about the proposed injection project: Name: Joel Daniel, PG Title: Senior Geologist Company: Draper Aden Associates Address: 8090 Villa Park Drive City: Richmond State: VA Zip: 23228 Telephone number: (804)264-2228 Fax number: (804)264-8773 Email Address: jdanielna daa.com II. PERMIT INFORMATION: 1. Project is: (X New (Modification of existing permit (Renewal of existing permit without modification ( Renewal of existing permit with modification 2. If this application is being submitted for renewal or modification to an existing permit, provide: existing permit number and the issuance date For renewal without modifications, fill out sections I & H only, sign the certification on the last page of this form, and obtain the property owner's signature to indicate consent(if the applicant is not the owner). For all renewals, submit a status report including monitoring results of all injection activities to date. RECEIVED/DENR/O M se 6/09 UIC-51/5T Aquifer gpmfortion Section Page I of 9 SEP 2 3 2010 APPLICATION FOR PhiurIIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 51 Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection HI. INCIDENT& FACILITY DATA A. FACILITY INFORMATION 1. FaciIity name: Orange County Landfill(North facility) 2. Complete physical address of the facility: 1514 Eubanks Road City: Chapel Hill County: Orange -State: NC Zip: 27516 B. INCIDENT DESCRIPTION 1. Describe the source of the contamination: Groundwater contamination originated from the closed North sanitary landfill (NCDENR SWS Permit#68-01). 2. List all contaminants present in soils or groundwater at the site(contaminants may be listed in groups, p � e.g., gasoline, diesel,jet fuel,fuel oil,chlorinated ethenes, chlorinated ethanes, metals,pesticides/herbicides, etc): Volatile organic compounds (including,but not limited to, chlorinated ethenes),metals 3. Has LNAPL or DNAPL ever been observed at the site(even if outside the injection zone)? (Yes If yes, list maximum measured separate phase thickness feet (_X No If no, list maximum concentration of total VOCs observed at site: 204.48 npb(MW-15, as of 11/18/09 sampling event) Agency managing the contamination incident: (UST Section (Superfund Section (including REC Program and DSCA sites) (DWQ Aquifer Protection Section a Solid Waste Section (Hazardous Waste Section (Other: 4. Incident managers name Ervin Lane and phone number " (919) 508-8516 5. Incident number or other site number assigned by the agency managing the contamination incident: NCDENR SWS Permit#68-0I Revised 6/09 UIC-5I/5T Page 2 of 9 _ APPLICATION FOR P1.IIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 51 Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection C. PERMITS List all permits or construction approvals that have been issued for the facility or incident, including those not directly related to the proposed injection operation: I. Hazardous Waste Management program permits under RCRA: 2. DWQ Non-Discharge or NPDES permits: 3. County or DEH subsurface wastewater disposal permits: 4. Other environmental permits required by state or federal law: Landfill permit#68-01 • Revised 6/09 UIC-51/5T Page 3 of 9 APPLICATION FOR PT IT TO CONSTRUCT AND/OR USE __ ..ELL(S) FOR INJECTION Type 5I Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection IV. INJECTION DATA A. INJECTION FLUID DATA 1. List all proposed injectants. NOTE: Any substance to be injected as a tracer or to promote in situ remediation must be reviewed by the Occupational and Environmental Epidemiology Section (OEES) of the Division of Public Health, Department of Health and Human Services. Review the list of approved injectants or contact the UIC Program to determine if the injectants you are proposing have been reviewed by OEES. Injectant: Potassium Permanganate Concentration at point of injection: 6% solution by weight(approximately 2.5 pounds per 5 gallons) Percent if in a mixture with other injectants: NA Injectant: KtLLN cu i UENF i LANQ Aquifer Protection Section Concentration at point of injection: Percent if in a mixture with other injectants: -1:1hC le Zulu Injectant: Concentration at point of injection: Percent if in a mixture with other injectants: Injectant: Concentration at point of injection: Percent if in a mixture with other injectants: 2. Source of fluids used to dilute or chase the injectants listed above: (None (_X Municipal water supply (Groundwater from private well or any well within VI mile of injection site (Air (Other: 3. If any well within '/a mile of injection site, a private well,or surface water is to be used as the fluid source, supply the following information: a. Location/ID number of source: b. Depth of source: c. Formation: d. Rock/Sediment type: e. In Attachment C, provide a current, complete chemical analysis of the water from the source well, including analyses for all contaminants suspected or historically recognized in soil or groundwater on the site. NOTE:If contaminated groundwater is to be used as the dilution or chase fluid, this is not the proper permit application form. You must apply.for a closed-loop groundwater remediation permit using application farm GARS. Revised 6/09 U1C-5I/5T Page 4 of 9 APPLICATION FOR PER ' TO CONSTRUCT AND/OR USE A LL(S) FOR INJECTION Type 5I Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection C. PERMITS List all permits or construction approvals that have been issued for the facility or incident, including those not directly related to the proposed injection operation: I. Hazardous Waste Management program permits under RCRA: 2. DWQ Non-Discharge or NPDES permits: 3. County or DEH subsurface wastewater disposal permits: 4. Other environmental permits required by state or federal law: Landfill permit#68-01 Revised 6/09 UIC-5I/5T Page 3 of 9 APPLICATION FOR P;G�.1llT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 51 Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection IV. INJECTION DATA A. INJECTION FLUID DATA 1. List all proposed injectants. NOTE: Any substance to be injected as a tracer or to promote in situ remediation must be reviewed by the Occupational and Environmental Epidemiology Section (GEES) of the Division of Public Health, Department of Health and Human Services. Review the list of approved injectants or contact the UIC Program to determine if the injectants you are proposing have been reviewed by OEES. Injectant: Sodium Permanganate Concentration at point . injection: varies Percent if in a mixture wit other injectants: NA Injectant: Concentration at point of injectio • Percent if in a mixture with other inj. tants: Injectant: Concentration at point of injection: Percent if in a mixture with other injectants: Injectant: Concentration at point of injection: Percent if in a mixture with other injectants: 2. Source of fluids used to dilute or chase th-. injectants listed . 'ove: (None a Municipal water supply { Groundwater from private well or an; well within 1/4 mile of injection site (Air ( Other: 3. If any well within '/4 mile of injec on site, a private well, or surface w:ter is to be used as the fluid source, supply the following information: a. Location/ID number of sour e: b. Depth of source: c. Formation: d. Rock/Sediment type: e. In Attachment C, provide a current,complete chemical analysis of the water from the source well, including analyses for all contaminants suspected or historically recognized in soil or groundwater on the site. 'NOTE: If contaminated groundwater is to be used as the dilution or chase fluid, this is not the proper permit application form. You must apply for a closed-loop groundwater remediation permit using application form GWRS. Revised 6/09 UIC-5115T Page 4 of 9 APPLICATION FOR Fi iv1IT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection B. PROPOSED OPERATING PARAMETERS 1. Duration of Injection: 2 years a. Maximum number of separate injection events: 8 b. Expected duration of each injection event: 1-2 days c. Expected duration between events (if more than one event):_<6 months 2. Injection rate per well: 5 gallons per minute(gpm) 3. Total Injection volume: gallons per day(gpd); <305 gallons per event(if separate events) 4. Injection pressure: 14.7 pounds/square inch (psi) 5. Temperature at point of injection: ambient 6. Briefly describe how the above parameters will be measured and controlled: sodium permanganate will be mixed in 5-gallon buckets,and then poured into the wells at 5 gpm. 7. Estimated hydraulic capacity of the wells: 0.4 (average) gpm C. INJECTION WELL CONSTRUCTION DATA 1. Injection will be via: ( Existing well(s)proposed for use as an injection well. Provide the data in (2)through (6)below to the best of your knowledge. (X Proposed well(s)to be constructed for use as an injection well. Provide the data in(2)through(6)below as proposed construction specifications. 2. Well Drilling Contractor's Name: Davidson Drilling, Inc. NC Well Contractor Certification number: NCWC 2108-A 3. Date to be constructed: September-October, 20I0 Number of borings: 4 Approximate depth of each boring(feet): 40/41 /50/60 4. Screened interval/Injection interval of injection wells: Depth: 8 to 40 feet below ground surface(if multiple intervals, indicate shallowest and deepest depth). Depth: 14 to 60 feet below ground surface(if multiple intervals, indicate shallowest and deepest depth). Depth: 13 to 41 feet below ground surface(if multiple intervals, indicate shallowest and deepest depth). Depth: 16 to 50 feet below ground surface(if multiple intervals, indicate shallowest and deepest depth). 5. WelI casing(N/A if injection is through direct push rods): Type: (X PVC ( Stainless steel ( Other: Casing depth: -2 to 8 ft. Casing depth: -2 to 14 ft. Casing depth:, 22 to 13 ft. Casing depth: 72 to 16 ft. Revised 6/09 UIC-5I/5T Page 5 of 9 i APPLICATION FOR P1 IIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 5I Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection 6. Grout(N/A if injection is through direct push rods): Type: ( Cement (X Bentonite ( Other: Grout depth: 0 to 4 ft. Grout depth: 0 to 10 ft. Grout depth: 0 to 9 L ft. _ Grout depth: 0 to I2 ft. ATTACHMENTS Provide the following items as separate attachments with the given headings: A. SITE HISTORY Provide a brief description of the site history including: (1) site usage historically and present, (2) origin of the contamination, (3) previous remedial action(s). NOTE: G.S. 89E-18 requires that any geologic plans, reports, or documents in which the performance is related to the public welfare or safeguarding of the environment be prepared by a licensed geologist or subordinate under their - direction. G.S. 89E-13 requires that all drawings, reports, or documents involving geologic work prepared or approved by a licensed geologist, or a subordinate under their direction, be signed and sealed by the licensed geologist. B. HYDROGEOLOGIC DESCRIPTION Provide a hydrogeologic description,soils description, and cross section of the subsurface to a depth that includes the known or projected depth of contamination. The hydrogeologic description shall include: (1) the regional geologic setting; (2) significant changes in lithology; (3) the hydraulic conductivity,transmissivity, and specific yield of the aquifer to be used for injection, including a description of the test(s)used to determine these parameters; and depth to the mean seasonal hig h the de p water table. C. INJECTION FLUID COMPOSITION Describe the chemical, physical, biological and radiological characteristics of each injectant. Attach the Material Safety Data Sheet(MSDS)for each injectant. If a private well or a well within '/4 mile of the injection site is used as the source well, include chemical analysis of source fluid here. D. INJECTION RATIONALE Attach a brief description of the rationale for selecting the injectants and concentrations proposed for injection, including: (1) goals.of the injection project; (2) explanation and/or calculations of how the proposed injectant volume and concentration were determined; (3) a description of the reactions between the injectants and the contaminants present including specific breakdown products or intermediate compounds that may be formed by the injection; and Revised 6/09 UIC-5I/5T Page 6 of 9 APPLICATION FOR TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 5I Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection (4) summary results of modeling or testing performed to investigate the injectant's potential or susceptibility to change (biological, chemical or physical) in the subsurface. E. INJECTION PROCEDURE AND EOUIPMENT Provide a detailed description of all planned activities related to the proposed injection including but not limited to: (1) construction plans and materials; (2) operation procedures; (3) a detailed diagram of the surface and subsurface portions of the system; and (4) a planned injection schedule. F. MONITORING PLAN Provide a plan for monitoring the results of the injection, including: - (1) a list of existing and proposed monitoring wells to be used; (2) a list of monitoring parameters and analytical methods to be used; and (3) a schedule for sampling to monitor the proposed injection. NOTE: The selected monitoring wells must be located so as to detect any movement of injection fluids, process by- products, or formation fluids outside the injection area or zone. The monitoring parameters should include the target contaminants as well as secondary or intermediate contaminants which may result from the injection and other parameters which may serve to indicate the progress of the intended reactions, such as pH, ORP, dissolved oxygen, and other electron acceptors and donors. The monitoring schedule should be consistent with the pace of the anticipated reactions and rate of transport of the injectants and contaminants. G. WELL DATA Provide a tabulation of data on all existing or abandoned wells within %4 mile of the injection well(s) which penetrate the proposed injection zone, including, but not limited to, monitoring wells and wells proposed for use as injection wells. Such data shall include a description of each well's use (water supply, monitoring, etc), total depth, screened or open _ borehole depth interval,and well construction or abandonment record, if available. - H. MAPS Attach the following scaled, site-specific maps: (1) Area map based on the most recent USGS 7.5' topographic map of the area, at a scale of 1:24,000 and showing the location of the proposed injection site. (2) Site map including: a. all property boundaries; b. all buildings within the property boundary; c. existing and proposed injection wells or well field(s) d. any existing sources of potential or known groundwater contamination, including waste storage, treatment or disposal systems within '/mile of the injection well or well system; e. all surface water bodies within % mile of the injection well or well system; and f. all existing or abandoned wells within '/mile of the injection well(s)which penetrate the proposed injection zone, including,but not limited to, monitoring wells and wells proposed for use as injection wells_ (3) Potentiometric surface map(s)including: a. direction of groundwater movement b. existing and proposed monitoring wells c. existing and proposed injection wells Revised 6/09 UIC-5I/5T Page 7 of 9 APPLICATION FOR PL-u,IIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type SI Wells—In Situ Groundwater Remediation/Type 5T Wells—Tracer Injection (4) Contaminant plume map(s) including: a. the horizontal extent of the contaminant plume, including isoconcentration lines b. existing and proposed monitoring wells c. existing and proposed injection wells (5) Cross-section(s)to the known or projected depth of contamination, including: a. horizontal and vertical extent of the contaminant plume, including isoconcentration lines b. major changes in lithology c. existing and proposed monitoring wells d. existing and proposed injection wells V. CERTIFICATION(to be signed as required below or by that person's authorized agent) NCAC 15A 2C .0211(b) requires that all permit applications shall be signed as follows: 1. for a corporation: by a responsible corporate officer 2. for a partnership or sole proprietorship: by a general partner or the proprietor, respectively 3. for a municipality or a state, federal, or other public agency: by either a principal executive officer or ranking publicly elected official 4. for all others: by the well owner. If an authorized agent is signing on behalf of the applicant,then supply a letter signed by the applicant that names and authorizes their agent, I hereby certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments therein, and that, based on my inquiry of those individuals immediately responsible for obtaining said information, I believe that the information is true, accurate, and complete. I am aware that there are penalties, including the possibility of fines and imprisonment, for submitting false information. I agree to construct, operate, maintain, repair, and if applicable, abandon the injection well(s) and all related appurtenances in accordance with the approved specifications and conditions of the Permit. Printed Name and Title: C \C 1.Pc) j l) re C 19 e- Signature: Date: 9— p--2-p/c' RECEIVED/DENR I DWQ Aquifer Protection Section SEP 23 2010 Revised 6/09 U1C-5I/5T Page 8 of 9 1 APPLICATION FOR PL"::'1 IIT TO CONSTRUCT AND/OR USE A WELL(S)FOR INJECTION Type 51 Wells—In Situ Groundwater Remediation/Type ST Wells—Tracer Injection 1 VI. CONSENT OF PROPERTY OWNER (if the property is not owned by the applicant) ("Owner" means any person who holds the fee or other property rights in the well being constructed. A well is real property and its construction on land shall be deemed to vest ownership in the land owner, in the absence of - contrary agreement in writing.) As owner of the property on which the injection well(s) are to be constructed and operated, I hereby consent to allow the applicant to construct each injection well I as outlined in this application and agree that it shall be the responsibility of the applicant to ensure that the injection well(s) conform to the Well Construction Standards - (Title 15A NCAC 2C .0200). Printed Name and Title: Signature: Date: Submit TWO copies of the completed application package, including all attachments,to: UIC Program Aquifer Protection Section North Carolina DENR-DWQ 1636 Mail Service Center Raleigh,NC 27699-1636 Telephone (919) 733-3221 - Revised 6/09 UIC-5I/5T Page 9 of 9 Draper Aden Associates (DAA)has prepared this Application in accordance with the care and skill ordinarily used by members of the environmental profession practicing under similar circumstances at the same time and in the same locality. DAA makes no warranties, expressed or implied, for the information included in this Application. Interpretations and conclusions presented are based upon a review of available information, including, but not limited to, the approved groundwater Corrective Action Plan, the results of field studies, and professional judgement. To be best of our knowledge, information provided by others is true and accurate, unless otherwise noted. �,►►►rurrur���i •`". CA# 1''• s % ' SEAL. I rr, 1917 +SVO\t 01.9Pnit-`%,,`�*fir 0- Joel C. Daniel, PG Senior Geologist • RECEIVED I DENR I DWQ Aquifer Prr erti7r Section SEP 2 3 Z010 • ATTACHMENT A SITE HISTORY 1.0 SITE USAGE The Orange County Landfill - North Facility, permitted and opened in 1972 (NCDENR Permit No. 68-01), is owned and operated by Orange County Solid Waste Management. The 49.7-acre North facility (the "closed MSW landfill") is bounded to the north by a wooded area, to the east by Old Field Creek and a wooded area, to the south by Eubanks Road and the Orange County Landfill - South Facility (active), and to the west by the Orange County Landfill - C&D Facility (Permit 68-04) and a wooded area. A General Site Location Map is provided as FIGURE 1 (ATTACHMENT H), and a Site Plan is provided as FIGURE 2 (ATTACHMENT H). The North facility was permitted to receive Municipal Solid Waste (MSW), and served Orange County and the towns of Carrboro, Hillborough and Chapel Hill in its history. The North facility consists of approximately 62 acres of disposal area in two separate disposal units, which are identified on FIGURE 2 (ATTACHMENT H): • The largest of the units (the "closed MSW landfill') is approximately 49.7 acres in area and contains about 2,400,000 cubic yards of MSW. This unit was closed in 1998. The facility is currently in the Post Closure maintenance phase. • The "closed C&D landfill," approximately 12.3 acres in area, is separated from the closed MSW landfill by a perennial stream, Old Field Creek. Old Field Creek has been dry during the most recent drought period. The closed MSW landfill and the closed C&D landfill are unlined, with no leachate collection system. The closed MSW landfill and the closed C&D landfill are associated with a network of groundwater monitoring wells, some of which were constructed as early as 1980. Groundwater monitoring has been• performed at the facility since April, 1990. These facilities have collectively been in Assessment Monitoring. A "passive" Landfill Gas (LFG) extraction system, consisting of a series of vents installed through landfilled waste, is presently operating at the North landfill. f � 2.0 ORIGIN OF CONTAMINATION The majority of the Orange County Landfill -North facility contains municipal solid waste. Such waste is capable of releasing man-made organic compounds, as may be entrained in the waste stream, or producing organic compounds during naturally occurring degradation of the anthropogenic parent compounds. All of the organic compounds observed at the Orange County Landfill -North facility may be classified as "volatile organic compounds." Volatile organic compounds may become dissolved in leachate, and migrate downward to the water table, or migrate in the vapor phase and, in some areas, reach equilibrium with groundwater. The Orange County Landfill - North facility is an unlined landfill; consequently, volatile organic compounds have migrated into groundwater at the facility. The organic constituents observed.at Orange County Landfill - North facility are typical of those observed at older unlined sanitary landfills throughout North Carolina. 3.0 PREVIOUS REMEDIAL ACTIONS The MSW landfill was closed in 1998. As part of that closure, Orange County Solid Waste Management implemented the following remedial measures at the facility: • Institutional controls • Engineering controls 3.1 Institutional Controls Institutional controls encompass the collective operational and regulatory systems that function to limit exposure of the public to refuse or refuse by-products, including leachate, fugitive vectors (Iitter, odor, etc.) and landfill gas (LFG). Each waste management facility is required to implement and maintain institutional controls established during siting and design, operation, closure and post-closure care. For purposes of this Application, institutional controls are classified as follows: • site location restrictions • site access controls • deed restrictions • public water supply 3.1.1 Site Location Restrictions Owners and Operators of unlined landfills were required to demonstrate compliance with siting restriction criteria as part of the 1994 Transition Plan in order to gain regulatory approval to maintain disposal operations until the 1998 closure deadline. For new facilities, the siting criteria are designed to protect public health and the environment by prohibiting development of waste management facilities in areas where excessive risk to the public is identified. For facilities already in place when these criteria were promulgated, continued operation would only be allowed on sites where compliance with siting criteria could be demonstrated. Draper Aden Associates prepared the Transition Plan for the Orange County Landfill that demonstrated conformance with North Carolina (15A NCAC 13B Section .1622) siting criteria; the first layer of institutional controls. These siting criteria include: • . Airports - Greater than 5,000-ft. from a public airfield runway handling piston aircraft and more than 10,000 ft. from a public airfield runway handling turbo or jet powered aircraft (NCAC .1622(1)). The Orange County Landfill is greater than 10,000-ft. from any public airport. • Floodplains -Avoid impact to 100 year floodplain (NCAC.1622(2)). The Orange County Landfill - North facility MSW disposal unit is not - located within the 100-year floodplain of Old Field Creek. • Fault Areas - Greater than 200 ft. from a Holocene Epoch fault (NCAC .1622(4)). No landfill unit is located within 200 ft. of a known Holocene Epoch fault. • Unstable Area - The facility is not located in an unstable area (NCAC .1622(6)). According to geologic and geotechnical evaluation of the site conditions (Westinghouse Environmental and Geotechnical Serivces, Inc., 1991), the property does not contain geologically unstable soils, sinkholes, or caverns. In addition, no manmade features or events that may result in a subsequent failure of containment structures are known to be present on-site. • Water Supply Watersheds (NCAC .1622(9)) - The facility is not located in a designated critical area of a water supply or in the watershed for a stream classified as WS-I. I 3.1.2 Site Access Controls Access to the Orange County Landfill - North facility is via an entrance on Eubanks Road. During normal operating hours, public access is monitored by County personnel, and traffic is directed to various locations at the site, depending on the type of non-MSW materials being delivered to the facility. Municipal Solid Waste is disposed at the South facility. After normal operating hours, the North facility is closed to public vehicle access, and such access is controlled by locked gates. For a large facility such as the North landfill, it is difficult to prevent all unauthorized access, but its location and the nature of its surroundings reduce this potential. Signs provide notification, and gates limit the opportunity for vehicle access and unauthorized dumping. The closed MSW landfill has a final cover in place, thereby eliminating the risk of contact with refuse or refuse byproduct. • 3.1.3 Deed Restrictions As required by state and federal solid waste regulations, the deed for the Orange County Landfill parcel has been modified to include a notation that identifies the facility as a landfill. Disposal unit limits, property lines, easements and other pertinent information is provided on the parcel survey so that development of the disposal areas - and unintended exposure to buried refuse -is severely restricted. The deed notation has been recorded by the Orange County Register of Deeds. I 3.1.4 Alternative Water Supply At many unlined landfills, long term residential consumption of impacted groundwater may be the most likely potential mode of off-site exposure. Such exposure is readily eliminated by the installation of a public water supply. For this reason, a critical institutional control is the identification, possible testing and removal of private water supply wells for commercial or residential properties adjacent to the landfill. The Orange County Landfill is located within an industrial-commercial suburban environment and bounded by interstate highways and a railroad along the west and south sides. There are no residences or potential groundwater users located immediately downgradient of the landfill, and no new groundwater users are anticipated in the future. The location of the landfill, the absence of potential groundwater users immediately downgradient of the landfill, and the availability of County water supply to properties located downgradient of the landfill are very effective institutional controls and minimize the risk of contact with impacted groundwater. _ 3.2 Engineering Controls Engineering controls encompass the systems designed to help limit exposure of the public to refuse or refuse by-products,including leachate and landfill gas (LFG). Improvements to engineering controls drive many of the regulatory changes that have occurred since the initial operations of the Orange County Landfill—North facility in the 1970s. For instance, mandates to contain leachate using engineered liner, collection and final cover systems implemented under Subtitle D regulations resulted in the closure of the Orange County Landfill—North facility and other unlined landfills in North Carolina and across the cou ntry. Engineering controls are classified as follows: • leachate collection • infiltration controls (final cover) • landfill gas controls • groundwater monitoring 3.2.1 Leachate Collection The Orange CountyLandfill - North facility g is an unlined landfill and no leachate collection system is in place. The final cover system appears to have minimized leachate breakouts, and with proper maintenance will continue to do so. The final cover represents the only practical mode of preventing direct public contact with leachate. 3.2.2 Infiltration Controls (Final Cover) Final cover was placed on the disposal unit, thereby closing it in accordance with applicable North Carolina regulations. The final cover is expected to: • minimize infiltration of precipitation into the waste • function with a minimum of maintenance over the life of the facility The Orange County Landfill - North facility municipal waste management unit is approximately 49.7 acres in size and was operated from 1972 until 1995. A final cover was placed beginning in 1996. Final closure of the unit was accepted by DENR in 1998. Passive landfill gas vents were installed at a frequency of approximately one vent per acre prior to construction of the final cover. The final cover consists of the following components (listed from the top of the waste upward): • • Intermediate Cover. Twelve-inch thick soil cover placed and compacted over the top of the waste layer once disposal operations ended in each section of the landfill. This layer functions to provide vector control and forms the base for the overlying final cover system. • Infiltration Barrier Layer. 18—inch thick soil layer compacted to achieve a hydraulic conductivity of less than 1 x 10"5 cm/sec. This component limits infiltration of stormwater through the final cover and into the waste. • Topsoil Layer. Six-inch thick soil layer with some organic content to promote and maintain growth of vegetation. The surface of the landfill fill 1 was graded to allow collection and proper management of surface water runoff. Surface water control ditches and berms conveyed the surface water from the landfill surface in a manner that reduces erosion damage to • the final cover. The surface of the topsoil layer was then seeded. The final cover system constructed has been used on hundreds of landfills across the nation and has proven to be an effective institutional control by minimizing infiltration, continuing to function even after significant settlement of the underlying refuse. 3.2.3 Landfill Gas Controls Uncontrolled migration of landfill gas (LFG) is well established as a potential risk to public health and safety, primarily because of its explosive potential and deleterious impacts to both groundwater and air quality. All MSW landfills will generate LFG, and proper controls and monitoring is a key operational control. Landfill gas at the facility is monitored by a network of probes located around the edge of waste. Landfill gas is "passively" extracted via a series of vents installed into the landfill waste. 3.2.4 Groundwater Monitoring The groundwater monitoring system is not a control measure per se, but provides a tool for assessing the efficacy of both engineering controls and naturally occurring degradation. Orange County Solid Waste Management has been monitoring groundwater in accordance with the requirement of Assessment Monitoring. An effective groundwater monitoring system will serve both to document the effects of engineering controls and naturally occurring degradation and to help determine if additional controls will be warranted in the future. ATTACHMENT B HYDROGEOLOGIC DESCRIPTION 1.0 AQUIFER CHARACTERISTICS The Orange County Landfill - North facility is located in the Piedmont Physiographic Province of North Carolina. The subject facility is located within the"Carolina Slate Belt", a geologic terrain of regional scale comprised of metavolcanic and metasedimentary rocks of Precambrian to Paleozoic age, and plutonic rocks of late Paleozoic age. Structurally, the terrain is characterized by relatively open to tightly closed, northeast-trending folds. Faults are common. To the east, the Slate Belt is bounded by sedimentary rocks of Triassic which outcrop in the extreme southeastern corner of Orange County. Metavolcanic bedrock has been observed at various locations within the subject facility during excavations and monitoring well construction. Based upon studies conducted by others, the uppermost aquifer underlying the facility consists of residual soil derived from weathering of the underlying metamorphic (metavolcanic) bedrock or (where residual soils are not saturated) fractured metavolcanic bedrock. There is no clear physical distinction between the upper residual soil/saprolitic aquifer and the underlying bedrock aquifer because the two intervals are not separated by a confining layer. Nonetheless, groundwater within the "residual soil aquifer"is contained in pore spaces, whereas groundwater in the underlying "bedrock aquifer" is restricted to joint sets and other fractures. - Groundwater generally flows from the western side of the landfill toward the east. Locally, groundwater likely discharges into Old Field Creek when surface water is abundant within the creek. Old Field Creek is an intermittent stream located near the western, northern, and eastern sides of the waste management unit. Old Field Creek enters the facility at the western property boundary, extends around the northern portion of the property, and crosses the east (downgradient) boundary of the facility near Eubanks Road. Beyond the eastern property boundary, Old Field Creek generally flows northeast where it eventually meets New Hope Creek. TABLE 1 (attached) includes historical groundwater elevation data. 1.1 Flow Direction A review of static water elevation data indicates no significant change in groundwater flow patterns have occurred over time, such that monitoring well MW-4 remains upgradient from all disposal areas and all other monitoring wells. As illustrated on FIGURE 3 (ATTACHMENT IT), groundwater generally flows toward the east. 1.2 Subsurface Profiles In order to help visualize subsurface conditions in the study area, we have prepared two geologic cross-sections, included in ATTACHMENT H: • FIGURE 5. Cross-section A-A' extends from the edge of waste, through wells 6801-MW15, 6801-MW23, and 6801-MW-24, and terminates on the adjacent property. • FIGURE 6. Cross-section B-B' extends from monitoring well 6801- MW17, through wells 6801-MW16, 680I-MW21D, and 6801-MW21S, and terminates on the adjacent property. As depicted on the cross-sections, the water table generally occurs within the silty to silty-clay residual soils, and saprolite over most of the facility. Where evidence of bedrock has been observed at, or near, the ground surface, the water table occurs within fractured bedrock. 1.3 Hydraulic Conductivity On June 16, 2008, Draper Aden Associates personnel performed slug tests in the following wells: 6801-MW15, 6801-MW21S, 680I-MW21D, and 6801-MW23. Monitoring well 6801-MW15 was partially screened within overburden, and mostly screened in bedrock. Monitoring wells 6801-MW21S, 6801-MW21D, and 6801-MW23 are screened with bedrock. The hydraulic conductivity values calculated from the slug test data are within the same order of magnitude for the tested wells, ranging from 6.37 x 104 cm/sec to 1.34 x 104 cm/sec. The average hydraulic conductivity is 2.91 x 104 cm/sec. TABLE 2 summarizes the hydraulic conductivity data for the listed wells. 1.5 Horizontal Hydraulic Gradient The hydraulic gradient across the North facility was calculated between wells 6801-MW5 and 680I-MW16, as this appears to represent the average gradient across the facility. The gradient is approximately 0.018 ftlft. 1.6 Groundwater Flow Velocity Groundwater flow velocity, or seepage velocity (Vs), is a function of hydraulic conductivity (K),hydraulic gradient(i)and effective porosity(ne): Vs=(K*i)/ 1 I Groundwater flow velocities were calculated using the hydraulic conductivity values obtained during the slug tests, the average hydraulic gradient, and an estimated effective I II porosity of 2% for fractured (meta)basalt. The groundwater flow velocities are summarized in TABLE 2. In general, groundwater flow velocities at the facility range from 38 meters/year to 181 meters/year. The rate of contaminant transport may be conservatively estimated by the velocity of groundwater flow; however, several processes (dispersion, diffusion, retardation, biodegradation) will serve to reduce the rate and total mass of contaminants transported via groundwater. 1.7 Vertical Hydraulic Gradient Two well clusters are located at the North facility: 6801-MW I4A / MW 14B, 6801- MW21S / MW21D. Groundwater measurements obtained at cluster 6801-MW14A / MW14B revealed a slight downward hydraulic gradient, with an elevation difference of 0.44 feet. Similarly, groundwater measurements obtained at cluster 6801-MW21S / - MW2 ID revealed a slight upward hydraulic gradient, with an elevation difference of also 0.44 foot. TAOLE 1 CLIENT:THE COUNTY OF ORANGE FACILITY:ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION:CHAPELH ILL.NORTH CAROUNA PROJECT:GROUNDWATER MONITORING PROGRAM 1118T04Y OE STATIC WATER ELEVATIONS DATE ! MWASl MWA/ 4911a0 MW-04 MW476R 490-97 MW-07R MW-13 1 1-144 MW-4470 • Wy-10 31W-16 I FAW-17 !FW-26 090-218 MW410 WY,22 M3V-21 vei.24ELEV96 604.15 Was 616,23 51114 446.8 4647 i 4 .1 4 0.16 M6. *2 33 29.4 47 4746 463S5 47.36 2,42 D06.6b 54108 _ J 917,37 51430 400.18 465.71 i a1.f4 , 48' 44* 03* 1 NUM 41637 528.421 47222 471744 463.44 474.44 477.73 01/6370 1 491124 52161 511,70 44179 442,00 I 47645 49450 I 0471W90 Spp,b1 32157 611.e0 49358 461 24 `t ' I 4713.12 44454 07/17190 404.12 521.26 506.26 491.37 475.06 47570 442.27 f 10/21090 49319 516.16 608.20 440.26 479 w 1 177.91 483.70 01/3040I 405.14 614 3 010 41 491 62 { 481 17 1 J 1 470.04 495 33 i 07111A1 404 12 518 74 500.29 489 03 476.53 - 470 91 46295 11014/91 a0312 51007 604.37 41650 475.60 476.00 431.95 1 - 05728102 49446 316,52 30762 1 40133 477,00 487.22 482,00 481.79 475,06 478,74 482,70 10127/92 401.74 514.24 500.71 43917 4 75.33 4e4,48 482.01 44103 17515 47341 431.29 j 02723/03 408.62 618.32 512.20 402 50 I , 481 59 I 488.14 463.21 452 80 476 71 476 25 446.34 (j • 041130093 1 49412 h 52007 508.37 ' 492.75 47800 411706 44142 481 36 4770/ 47849 482.70 I Mj4A3 491.54 31657 486.57 482.22 48103 47e.33 4/6.39 481.00 01/24194 494.72 416.70 509,07 402.75 441.04 487.72 403.00 482.73 476.21 460.77 • 00721794 - - I 147.43 + I 11/0304 492.05 616.44 47701 487.19 44393 482.15 477.00 47723 _ 48237 40581 12/2094 403_40 51414 570676 9444 47448 : 48752 48390 632.34 47713 477.51 402.99 49701 • 02/0295 494.32 503.E 508.67 460.13 47071 48783 49302 482.83 178.08 478,48 15416 407.03 03113974 4478,10 018.02 611.67 462.51 422.14 I 464.21 44390 402 76 477 35 416 E6 44101 408.63 1 -4 11/15/95 49494 618.54 501.47 49111 I{{ 482.21 499,23 46307 461.74 477,33 478.74 496.06 490.08 IVr 07/26/06 612.11 521.66 60690 401.87 474.00 496,02 48122 4e1.36 476.03 47450 441.94 4980e 0215A7 40705 52102 51138 40341 450.11 42704 I 461.64 ` a IrY 4e271 4mn 474.a 446.02 499 oe I i 00+9397 400.4-1 659 71 306,84 469 16 41499 /ee.e5 410.74 4160.94 M 474.p2 47861 0.75 J 496.23 1 06/04Ne 447.21 524.10 500.70 1 403.01 476.01 41780 491-31 46235 470.56 47764 464.73 600.04 11/02/133 488.03 51137 604.69 48704 474,58 464.20 420.01 411.06 47564 47109 479.92 407.33 04126740 404.44 51003 507.19 46001 478,11 43764 J 481.00 482.31 478.44 47741 18307 4419.16 11/2290 Ma.60 62070 6w 25 44009 478.27 447 71 482.50 162.60 {m37 a77.66 M354 409.e6 } � 0572300 . 495.23 522.28 609.05 40243 476.04 405.02 462.58 _ 45243 476.14 47740 46432 49103 472.45 47322 41052 I' 11/28100 40195 616.42 60648 466.00 47424 480.47 492.14 1 461.00 475.32 476,40 402.76 4911.71 472_12 47244 479.26 06/05101 494.66 61057 610.62 440.62 477.99 48772 482.56 , 482.22 49119 477,91 484.00 49421 472.60 47101 479.73 11/13811 402.55 615.138 000,30 465.03 474.74 460.42 - 461.43 461.33 I 474.16 474_97 480.37 40781 47001 470.94 470.16 06/04492 40090 615.80 507,87 48703 ' 474.00 49560 18142 481.94 i 473.09 476.01 480.07 40783 470,70 47900 47e.42 031393 402.52 _, 616.74 01507 48150 46563 422.22 412.74 47749 478.70 465.08 50043 474.91 473.03 41045 0010/03 495.73 621.57 614.49 0254 474.14 411.24 412l1 482.69 477117 472.42 485_37 10072 472.97 47172 480.04 1204/03 404.17 51040 614,04 46643i. 4 75 94 498.13 432.62 4112-25 175,07 477,10 483.I1 409.71 472.31 472.70 170.55 06722l04 403,45 819.50 606.95 • 480.01 461,86 4431.46 475108 470,41 482.06 49070 471,74 470.54 47033 11776404 405.00 516 w 81251 468 04 482,06 481.09 476,61 17821 460.4111 600,53 179.09 47371 48015 06101105 444 40 618 43 50914 490 10 : a 76 Al 417.34 I 44 [ 2,39 165.94 I 47660 1760/ M245 4wA3 471 e7 47219 47048• Il 11702706 4130.75 515,43 50717 - 47460 46604 1 491.52 461.18 473 N.5 70 475.00 441.06 40 47072 : 469.99 47764 TABLE 1 CLIENT:THE COUNTY Of ORANGE FACILITY ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION,CHAPEL HILL,NORTH CAROLINA PROJECT',GROUNDWATER MONITORING PROGRAM ' HISTORY OF STATIC WATER ELEHATIONA DATE - PSALM T LOW-04 ' MW06 MW46 MW-06R I WA 1 MIN-0714 I MW.13 I 16W24A I MW.148 r 97178.16 1 MW-56 1 14N-17 1 MW.20 MW.216 100-210 _MW.22 i MW.I3 l MW44 ELEVg4 604.16 I 547.46 332.04 614.21 615.64 464.1{ 41e79 I 496.11 411.44 I 464.38 411.29 400.44 107J3 I 126A0 474.70 q 474.66 481.56 60 + 470.46 Ei.EVmp 606-06 64190 623.76 117.33 514.60 4813.46 488.71 I 491.14 ; 409.34 damf 463.86 482.01 :1496.37 . 111.43 471702 47044 _ 453.48 8Sll 477.10 00722,00 493.45 61680 51032 j : 46114 462.47 AB,AO 47415 , 47083 I 48260 41073 471J2 47184 47154 11127700 40404 01112 51936 469.03 .177.33 416.06 46103 • 46206 477.06 471.70 466,34 40046 47124 47'196 _ 48404 ON13gi 443,86 417,M 600.00 I 480.23 - • 474,50 4BB14 412.1D 48193 `- 471-41 476.24 465.84 400.12 47L06 1 411,40 470.27 47284 21,2801 481.14 612,44 51202 males 47461 460.98 481.70 460.84 47266 47377 47000 496.71 400.42 461.00 AT?.01 48070 06110106 402.44 01660 110.20 460.17 I 47400 46740 462,40 48198 474.70 47113 442,32 600.13 471.10 471.63 47D63 _ 472.80 11/06700 49100 514.64 600.48 466.82 41421 4174D 492.74 41230 471.74 476.00 412,04 500,04 472.E 47141 47174 473.16 471.07 00715(09 617.14 612,14 _ i 40860 462.18 462.34 475.02 476,11 48142 600,40 471.72 472.23 460.06 47383 475.11 1171100 49176 514,16 511.56 406.29 470.31 418.40 4611E 462.76 470.02 478.21 484,15 500.12 472.70 47109 480.34 474.31 472,61 04021110 61872 510.06 48002 41541 ` 482.74 482.70 47040 470.71 44322 409.50 47010 471,01 470.66 473.20 47187 MIN 408.03 512,44 I 604.10 ` 4/7.43 466,20 174Y 473,81 41129 470,74 46014 47796 _ 473.61 M 47915 4J 40 1 441. _ 401A 47074 400.T0 474.11 MAX - 690.61 821,30 b14.Y 1 413.91 461.12 41021 • 7 456,60 404,64 46330 412.00 470.91 476.70 416.06 10104 474.00 47614 I 401_04 47411 417.61 MEAN 493.61 5111.14 600.30 4. 480.66 ♦' 417.25 ,! 477.91 47653 - 487.61 461.27 481.rp 47696 477.40 403.13 409,29 � 471)3 472.01 1 471.36 472.84 47 RANGE - 1211 14.86 910 I 021 2.72 7.62 , 16-11 058 3-50 594 6.43 6.14 623 1 1023 i 6.44 521 420 4.41 • 1 LID • I.40 21/ 7.06 1 1.78 : 720 2.34 466 0.0 112 3.60 1.27 129 1.73 1.61 1 Lis 4.54 I I.16 127 0 ENV.Itona 4aplr444d in Net.b0vr m44n d 4 64441. 1.4ha44d we Bs to c0h41d4744 up41:4dSn1 well.. All LIME data hap.Owen cum.Nd to survey data ob14Inad during May,1999. ELEV.mp add ELEY124 d4riv.d 7toe.urvry parform.d during May,I999. ORANGE COUNTY REGIONAL LANDFILL - NORTH STATIC WATER ELEVATIONS 530 525 - )11\111\11eAr41 520 515 � VA. --- - - 510 --- 15. 1505 ' GS in 500 Qt i 495 -- --- - -- - --- - • O 490 '.(----�+---� y ✓' • �--- Y.- a+ QI 485 480 el"\\. -.-- I --'; a 475 ■Tx/. ■ r'J 470 465 460 •• , 0 04 o��o o °^�^R O� �� O �° O O o`5��� hod hC�4D o¢ 6 04' t$ ���cP o'~cS'^�� d°' s^ C;°� �o�' .`ry����,o��ortlNC5v- \,o t MW-01 MW-0d MW-05 MW-06 ter•••-MW-07 MW-13 MW-14A MW148 ----MW-15 MW-16 MW-17 —6—MW-20 MW21S MW-21D MW-22 MW-23 MW-24 Date TABLE 2 CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY LANDFILL - NORTH FACILITY LOCATION: CHAPEL HILL, NORTH CAROLINA PROJECT: ASSESSMENT OF CORRECTIVE MEASURES HYDRAULIC PARAMETERS AND GROUNDWATER FLOW DATA hydraulic hydraulic average effective E groundwater well conductivity conductivity gradient seconds per year porosity* € flow velocity designation (cm/sec) (misec) (m/m) _ (meters/year) MW-15 1.34E-04 1.34E-06 0.018 3.15E+07 0.02 3.80E+01 MW-21s 2.54E-04 2.54E-06 0.018 3.15E+07 0.02 7.21E+01 M W-21 d 1,39E-04 1.39E-06 0.018 3.15E+07 0.02 3.93E+01 MW-23 6.38E-04 6.38E-06 0.018 3.15E+07 0.02 1.81E+02 *Fetter, C.W., 1988. Applied Hydrogeology,2nd Edition. median= 5.57E+01 ATTACHMENT C INJECTION FLUID COMPOSITION This ATTACHMENT describes the chemical, physical, biological, and radiological (where available) characteristics of the proposed injectant (potassium permanganate). A Material Safety Data Sheet(MSDS) for the injectant is included. 1.0 SODIUM PERMANGANATE AND POTASSIUM PERMANGANATE Two common forms of permanganate are commercially available and have been widely tested under field conditions: potassium permanganate (KMnO4), and sodium permanganate (NaMnO4). Both forms have similar chemical reactivity. Sodium permanganate is typically sold as a dark purple liquid, at concentrations up to 40%. Potassium permanganate is typically sold in a purple, crystalline or granular form. Potassium permanganate has a sweetish taste, and is odorless. Potassium permanganate can be mixed to form solutions up to 6%. Both forms of permanganate are strong oxidizing agents with a unique affinity for oxidizing organic compounds containing carbon-carbon double bonds (such as aldehyde groups or hydroxyl groups). As an electrophile, the permanganate ion is strongly attracted to the electrons in the double bonds found in many regulated organic constituents. It borrows electron density from these bonds to form a bridged, unstable oxygen compound known as a "hypomanganate diester." The diester further reacts by a number of mechanisms (including hydroxylation, hydrolysis, or cleavage). Under normal subsurface pH and temperature conditions, the carbon-carbon double bond of alkenes is broken spontaneously and the unstable intermediates are converted to carbon dioxide through either hydrolysis or further oxidation by the permanganate ion. The primary by-product of the permanganate compounds is manganese oxide. RECEIVED 1 DENR I DV Aquifer Protection Section DEC le 2010 ATTACHMENT C INJECTION FLUID COMPOSITION This ATTACHMENT describes the chemical, physical, biologi al, and radiological (where availa. e) characteristics of the proposed injectant (sodium ermanganate). A Material Safety D . Sheet(MSDS)for the injectant is included. 1.0 SODI i PERMANGANATE AND POTASS PERMANGANATE i Two common form of permanganate are commerci Ily available and have been widely tested under field ,onditions: potassium pe anganate (KMnO4), and sodium permanganate (NaMn! . Both forms have s' ilar chemical reactivity. Sodium permanganate is typical! old as a dark purp liquid, at concentrations up to 40%. Potassium permanganate is $ sically sold in a purple, crystalline or granular form. Potassium permanganate has a weetish taste, d is odorless. Potassium permanganate can be mixed to form solutions up o 6%. Both forms of permanganate are str• g ixidizing agents with a unique affinity for oxidizing organic compounds containin. arbon-carbon double bonds (such as aldehyde groups or hydroxyl groups). As an ,1- trophile, the permanganate ion is strongly attracted to the electrons in the do ble .onds found in many regulated organic constituents. It borrows electron denity from these bonds to form a bridged, unstable oxygen compound known as a "hyp.- anganate diester." The diester further reacts by a number of mechanisms (including h droxylation, hydrolysis, or cleavage). Under normal subsurface pH and emperature conditions, the carbon-carbon double bond of alkenes is broken spontane. sly and the unstable intermediates are converted to carbon dioxide through either h,drolysis or further oxidation by the permanganate ion. ` The primary by-product of th, permanganate compounds is m‘ ganese oxide. i ATTACHMENT D INJECTION RATIONALE This ATTACHMENT describes the rationale for selecting the inje ) j% ps the concentrations proposed for injection. ulfer Protection S Uyy ' ecfion DEC 10 200 1.0 GOAL OF THE INJECTION PROJECT The goal of the injection project is to reduce the concentrations of volatile organic constituents in groundwater to levels below their respective Groundwater Quality Standards. 2.0 VOLUME OF INJECTANT The volume of injectant for each well is primarily based upon two factors: the volume of the well pipe, and the pore volume of the gravel pack around the well screen. Once the gravel pack pore space and well pipe are full of injectant, the rate of dispersion into the subsurface materials will be a function of the overall hydraulic conductivity of the subsurface materials. The average hydraulic conductivity for the area to be treated is 2.91 x 104 cm/sec, and is • based upon slug tests performed on four monitoring wells. The average porosity is assumed to be 0.02', and the average hydraulic gradient is 0.018 ft/ft. This results in an average seepage velocity of 2.62 x 104 cm/sec, which is essentially equal to the average hydraulic conductivity. The estimated hydraulic capacities of the injection wells are governed by the seepage velocity of the natural subsurface materials at and beyond the borehole walls, assuming a saturated gravel pack. The screen intervals of the four proposed injection wells are as follows: INJ-A: 32 ft, INJ-B: 46 ft, INJ-C: 28 ft, INJ-D: 34 ft. It is anticipated that the boreholes will be completed using 10" diameter drilling equipment, and that the wells will be constructed with 4" inner diameter PVC well screen and riser pipe. These dimensions result in a gravel pack pore volume of 5 ft3 for INJ-A, 7.2 ft3 for INJ-B, 4.4 ft3 for 1NJ-C, and 5.4 ft3 for INJ-D, assuming a gravel pack porosity of 0.35. In addition, based on the anticipated borehole diameters, the hydraulic capacities of the wells would be approximately 0.4 gpm. Fetter,C.W., 1988. Applied Hvdrogeologv,2nd Edition. The total pipe lengths (screen+ riser) for the four proposed injection wells are 42 ft (INJ- A), 62 ft (1NJ-B), 43 ft (INJ-C), and 52 ft (1NJ-D). These lengths, and the 4" pipe diameters for the wells, result in pipe volumes of 4 ft3 (INJ-A), 5.8 ft3 (INJ-B), 4 ft3 (INJ- C), and 5 ft2 (1NJ-D). Accordingly, the total anticipated volumes for injectant for the four wells are 9 ft3 (= 67 gallons; INJ-A), 13 ft3 (= 97 gallons; INJ-B), 8.4 ft2 (=63 gallons; INJ-C), and 10.3 ft2 (=77 gallons; 1NJ-D). Based on the estimated hydraulic capacities of the wells (0.4 gpm), the estimated times to dissipate the respective volumes are approximately 3 hours (INJ-A), 4 hours (INJ-B), 2.5 hours (INJ-C), and 3 hours (INJ-D). Detailed calculations are included with this ATTACHMENT. 3.0 INJECTANT REACTIONS The reaction of potassium permanganate with chlorinated solvents will typically result in the production of carbon dioxide, potassium ions, and chloride ions. The permanganate is then reduced to insoluble manganese dioxide. During the application period, groundwater downgradient of the injection wells can be periodically monitored for the presence of these parameters. In addition, field measurements of ORP can provide indication of the progress of the treatment. To date, no field testing of potassium permanganate has been performed at the site to determine site-specific reaction degradation products. However, the degradation products listed above are believed to be typical for the reaction of potassium permanganate with the VOC constituents in groundwater at the facility. RECEIVED/DEN Aquifer Protection Re Dvto DEC 16 anon 2010 ATTACHMENT D INJECTION RATIONALE This ATTACHMENT describes the rationale for selecting the injectants, and describes the concentratio, proposed for injection. 1.0 GOAL +F THE INJECTION PROJECT The goal of the i ction project is to reduce the concentr. ions of volatile organic constituents in gro a water to levels below their respec- ve Groundwater Quality Standards. 2.0 VOLUME OF INJE, TANT The volume of injectant for each ell is primarily ba'-d upon two factors: the volume of the well pipe, and the pore volum- of the gravel p. k around the well screen. Once the gravel pack pore space and well pi are full of i,jectant, the rate of dispersion into the subsurface materials will be a funct' n of the overall hydraulic conductivity of the subsurface materials. The average hydraulic conductivity for the : •a to be treated is 2.91 x 104 cm/sec, and is based upon slug tests performed on four .nitoring wells. The average porosity is assumed to be 0.021, and the average hydr. 1ic\\gradient is 0.018 ft/ft. This results in an average seepage velocity of 2.62 x 104 c sec, which is essentially equal to the average hydraulic conductivity, The estimated ydraulic"capacities of the injection wells are governed by the seepage velocity of th natural subsurface materials at and beyond the borehole walls, assuming a saturated t I vel pack. ,\ The screen intervals of the four pro!osed injection wells are as follows: 1NJ-A: 32 ft, INJ-B: 46 ft, INJ-C: 28 ft, INJ-9. 34 ft. It is anticipa d that the boreholes will be completed using 10" diameter dril i ng equipment, and that e wells will be constructed with 4" inner diameter PVC wel screen and riser pipe. Th e dimensions result in a gravel pack pore volume of 5 ft3 '.r INJ-A, 7.2 ft3 for INJ-B, 4.4\ft3 for 1NJ-C, and 5.4 ft3 for 1NJ-D, assuming a gravel pa•k porosity of 0.35. In addition, based on the anticipated borehole diameters, the hydra tic capacities of the wells would be approximately 0.4 gpm. Fetter,C.W., 1988. Applied Hydrogeology,2id Edition. The total pipe lengths (screen+ riser) for the four proposed injection wells are 42 ft (INJ- A), 62 ft (INJ-B), 43 ft (INJ-C), and 52 ft (INJ-D). These lengths, and the 4" pipe diameters for the wells, result in pipe volumes of 4 ft (INJ-A), 5.8 ft3 (INJ-B), 4 ft3 (INJ- C), and 5 ft2 (INJ-D). Accordingly, the total anticipated volumes for injectant for the four wells are 9 ft3 (= 67 gallons; INJ-A), 13 ft3 (- 97 gallons; INJ-B), 8.4 ft2 (=63 gallons; INJ-C), and 10.3 ft2 (=77 gallons; 1NJ-D). Based on the estimated hydraulic capacities of the wells (0.4 gpm), the estimated times to dissipate the respective volumes are approximately 3 hours (INJ-A), 4 hours (INJ-B), 2.5 hours (INJ-C), and 3 hours (INJ-D). Detailed calcul 'ons are included with this ATTACHMENT. 3.0 INJECTANT ACTIONS The reaction of sodiumganate / pewith chlorina�d solvents will typically result in the production of carbon dioxide, odium ions, and chloride ions. The permanganate is then reduced to insoluble manganese 'oxide. During the application period, grro water:downgradient of the injection wells can be periodically monitored for the pres ce of these parameters. In addition, field measurements of ORP can provide indication of the progress of the treatment. / To date, no field testing of sodium permanganate has been performed at the site to determine site-specific reaction degradation products. However, the degradation products listed above are believed o be typical for the reaction of sodium permanganate with the VOC constituents in gro dwater at the facility. Draper Aden A5.''>„_�Ciates - Blacksburg,VA: 540/552-0444 .. Charlottesville,VA: 434/295-0700 Engineering•Surveying•Environmental Services Richmond,VA: 804/264-2228 Raleigh/Durham, NC: 919/367-9997 Subject p i-447 1p . Sheet No. / of f a v Fi) kUP,)i -40g- Vt3)fir,m- Job No. CS6-54,Y2 Co, IG u let 1 i c r `; - By JG0 Date T jZ3)1 d JGvc.Li7 1'751&r-Y%10(.) • / r. / Pole- U4)vn1e / 1-7 $C_PEE/1 / f Vq1.` �io�! cY,G. �,1� S.c taGY1 \Q1Umeit. / � ' / x x �• I '/5'7 3. icii a, a 3 Crave-) fia e pore.. V,d41/1 7,5- ; -- ,:'9- .3 S S - �/ 3 ! �t /0Tie= --a at)d (`?t'ii ; /Q. VOLw-e fa 1 v`cr'u rn -o- 1/ w1` h l4 AV C y, : - - f � /...(�3 q Email: daa@daa.com Web: www.daa.com a Draper Aden AL,i)ciates Blacksburg,VA: 540/552-0444 Engineering•Surveying r Environmental Services Charlottesville,VA: 434/295-0700 Richmond,VA: 804/264-2228 Raleigh/Durham, NC: 919/367-9997 Subject 0 N i'rle..- CO ,F J1Jd -2// ) Sheet No. 2- _ of 171 6rnvki ratCF tv WelI pip_ mt7„z, Job No. Reid-5 ) 014--)"74i5 By Date recto r) if )141 C 4) , 1y � - 40 ' v-a 1 arp was, . - _r /9 ,1 7W Ita/i Zi "a/!4. 1'l CS lei I :1r/ _ 2 r l fiQdr 00- ,Y tAy)-7 - (2-1- y,3 � J c_7_ j-Ser fife- et 6creen: 1o_ , Ny 11-dley77 ; 1, 53 v i1 m - -r/ w7 h ��I n4� : 7�3T �'.7r� = 2.3713 " /j 6-3 Email: daa@daa.com Web: www.daa.com _ A Draper Aden As._.=-_iates Blacksburg,VA: 540/552-0444 Charlottesville,VA: 434/295-0700 Engineering•Surveying 1 Environmental Services Richmond,VA: 804/264-2228 Raleigh/Durham,NC: 919/367-9997 Subject OE`gnle CO- L,1 — 4a r•-1) Sheet No. 3 of / Gr-AVel P4 ckl J )/ pipe vo k,g Job No. Off ic Ca-141,4:4a By _O-7 -2) Date qa.3)./.8 - yAJJ C Le,t 1)1 V a?) CB 65:1. ha)e v`aturn „v- -1111,7 5creso in � �`��r/ ( " c . �'1,k„) ; x /-7L e x Or ! l 7 / X -3.14/1JC , 6cp_egn voIwv6 '(y/' 644, 'tie) ; •i'' X ,OS/ x 3.tgj5q � 3 G peck pare- V'o lucre; CI3.3 -Ft. a, 4 3X 0, 3.S' - 9, a)isve,- screen; /-' V 0)um : /, Y �' 3 TTM/ vattsnle 46 'Lea I vA N4 AI Cy ; 19"- . 2/ 3 Ai, �'� 8,5'��3 x 7, L/S = C 3,Ql; Email: daa@daa.com Web: www.daa.com a Draper Aden A . .,L iates Blacksburg,VA: 540/552-0444 Engineering•Surveying•Environmental Services Charlottesville,VA: 434/295-0700 Richmond,VA: 804/264-2228 RaIeigh/Durham,NC: 919/367-9997 Subject Off`7/1,71- Co , i-F - A10-11j Sheet No. -/ of V (`kve) Pack v Weil Vo1Urile Job No. a�1��%�t �'d C��ca1L1 1on3- By _ CD. Date '/ y46 fl TNT D Scf'eer) /nit& lraI 63 ; a 56 ' vcriprre 01 kfk &4 die?' . het Z Lf / 6f17Y ' )G 3, 11/15J — 1T/ Z -C'7L3 ,re 6-j"d . 391 x o,03 ' x 3.Iy15' 3. if 6 ravel fr o ve fume. : Cd$, �t —3 ac--2.) a. s= .: f 1/e e hove 5crewl, 14g' VQ)w ie ; f, 7 -(}3 o' -Fct 1 u-e/urh e- / fi n 4 ; a. a-rt 5, y 13�1, 7 3=- !a 3 #3 16 -G-3 g 7, V? = 7 ? 9�1 Email: daa@daa.com Web: www_daa.com _ a Draper Aden A '.-tieiates ' Blacksburg,VA: 540/552-0444 Engineering•Surveying•Environmental Services Charlottesville,VA: 434/295-0700 Richmond,VA: 804/264-2228 Raleigh/Durham,NC: 919/367-9997 Subject 0 T Pir) .- co• L F - f/o/`t)h Sheet No. / of Well h yair s/i -- CC(f?C -�y [a cU 14-71/ CIS Job No. goes-ss 2- ' 91 1 r By JD Date S r rep = LJ h() )e ��l�1l, ��r�,-r3�n� 1 " /rak _621'ce2i 1 1&--0-11) gg, 4) ' o-- r 1! : 6otid 3aie-I , g r y SgeiO4, t. 'Zr Z rft, r.-, 6, 1 c.(34/7„:0.2 049.3 -0.7rp/4 r, 9 Fee6-i7 /en/ h 0- yG- flr� a~ wed/ l a I -(—Z put/on k rev'"? kW! 19,1 1 ,r�jM �- � T� � - a-d e For scree az"; � h it-ri --e `uctif ; • 71 �r � -y Di�5;ect4-,0/? "hraUc9� Vilt�I! 71/-(1 X SJX/0 f'�rnii) 0,43$ -RVi»,n F>- 6"creen ier)1 c5-F 31f f : 2:$1`T z �9re�t -6 vv4// 11,7 - t5 55)jcii/on hraL. h bra Sehnle i r i zr'� 6„1..rio`Y gfrli/ - Z7 / Email: daa@daa.com @ Web: www.daa.com Typical HRC/ORC INJECTION WELL Well k 1 1 �y O — • a 5 X : ci o • e Grout !., 0 o 1 P Wv.F ' O o • lain-2 Bentonite Seal 0 =:.: • a o , _ OE �--�y -Inch Diameter 5ch 80 PVC 40 or 60 Slot Screen Aquarium •a :;. . Gravelor Equivalent C e . ' 1 d - w, . ° RECEIVED 1 DENR 1 DWQ Aquifer Protection Section SEP 2 3 2010 Schematic — Proposed Injection Well Client Orange County Solid Waste Management SCALE: None Facility Orange County Landfill —North Facility SOURCE: DAA Location Chapel Hill, North Carolina DAA NO. R00592-96 Project Underground Injection Permit Application DESIGNED JCD FIGURE Draper Aden Associates DRAWNCHECKED LNDF 7 .‘„,::, Engineering • Surveying • Environmental Services DATE 09-03-10 ATTACHMENT E INJECTION PROCEDURE AND EQUIPMENT This ATTACHMENT describes the equipment and procedures necessary for performing the injections of potassium permanganate. As discussed previously in ATTACHMENT D, the injection wells will be constructed of Schedule 40 PVC screen and riser pipe. FIGURE 7 (ATTACHMENT H) shows a schematic of a typical injection well. Once the injection wells are constructed, the potassium permanganate solution can be prepared onsite and then poured directly into the well pipe. For the first injection, to be performed within 60 days of approval of the Underground Injection Permit application, the solution will be prepared in 5-gallon buckets and poured into the pipe, in order to verify the anticipated injectant volumes and well hydraulic capacities. Subsequent injections may involve the use of small tanks that would be connected via manifold to the tops of the injection wells. This would allow for more prolonged injection periods, until the tanks were emptied. The County would be required to ensure that the manifold connections are secure, as required by NCDENR regulations for groundwater wells. The anticipated schedule for injections is every 3-6 months. RECEIVED/DENR! UVVU Aquifer Protection Section DEC 16 2010 ATTACHMENT E INJECTION PROCEDURE AND EQUIPMENT This ATTACHMENT describes the equipment and procedures necessary for performing the injections of sodium permanganate. As discusseeviously in ATTACHMENT D, the injectio wells will be constructed of Schedule 40 PV screen and riser pipe. FIGURE 7 TTACHMENT H) shows a schematic of a typic injection well. Once the injection wells a constructed, the sodium pe anganate solution can be prepared onsite and then poured dir tly into the well pipe. F r the first injection, to be performed within 60 days of approval the Underground In. ction Permit application, the solution will be prepared in 5-gallon ckets and poure into the pipe, in order to verify the anticipated injectant volumes and ell hydraulic capacities. Subsequent injections may involve - use . small tanks that would be connected via manifold to the tops of the injection weI P 's would allow for more prolonged injection periods, until the tanks were emptied. The . ticipated schedule for injections is every 3-6 months. ATTACHMENT F INJECTION MONITORING PLAN This ATTACHMENT presents the list of existing and proposed monitoring wells to be used; presents a list of monitoring parameters and analytical methods to be used; and includes a schedule for sampling to monitor the proposed injections. 1.0 INJECTION AND MONITORING WELLS As presented in the approved Corrective Action Plan, the proposed injectio eiis8 2 IDe constructed in the vicinity of existing individual wells or groups of existing monitoring wells: • INJ-A: wells 6801-MW23 (nature& extent) and 6801-MW24 (nature& extent) This injection well will be constructed upgradient of, and within 20 feet of, well 6801-MW23. Well 6801-MW23 is located downgradient of well 6801-MW 15, with well 6801-MW23 approximately equidistant between 6801-MW15 and 6801- MW24. The monitoring of well 6801-MW24 will allow for evaluating the effectiveness of the injectant at decreasing VOC concentrations at the facility boundary. • INJ-B: 6801-MW21S (compliance) and 6801-MW21D (compliance) This injection well will be constructed upgradient of, and within 50 feet of, well cluster 6801-MW21S and 6801-MW21D. The well cluster is located at the facility boundary, and near Old Field Creek. The monitoring of wells 6801-MW21S and 6801-MW21D will allow for evaluating the effectiveness of the injectant at decreasing VOC concentrations at the facility boundary. • INJ-C: well 6801-MW15 This injection well will be constructed upgradient of, and within 40 feet of, compliance well 6801-MW15. This injection well is intended to provide an additional source of potassium permanganate for the VOC plume. • INJ-D: well 6801-MW16 This injection well will be constructed upgradient of, and within 40 feet of, compliance well 6801-MW16. This injection well is intended to provide an additional source of potassium permanganate for the VOC plume. 2.0 MONITORING PARAMETERS During the remediation period, the facility will continue to monitor all compliance wells semi-annually, in accordance with NCDENR Assessment Monitoring requirements. In addition, the facility will obtain additional groundwater samples from wells 6801-MW 15, 6801-MW16, 6801-MW21 S, 6801-MW21D, 6801-MW23, and 6801-MW24, for analysis of the following parameters: • carbon dioxide (RSK-175) • potassium (SW-846 6010C) • chloride (EPA 300) • manganese (SW-846 6010C) • ORP (field measurement) • VOCs (SW-846 8260B) • Mercury (SW-846 7470A) 3.0 MONITORING SCHEDULE The primary indicator of the oxidation process is an increase in oxidation-reduction potential (ORP). Accordingly, the facility began measuring ORP in the above-listed wells during the June, 2010 groundwater sampling event. The facility will continue to measure ORP in the above-listed wells throughout the groundwater corrective action period. In addition to measuring ORP, the facility will obtain groundwater samples for analysis of the constituents listed above (except for VOCs and mercury) immediately prior to the first injection of potassium permanganate. The facility will then obtain groundwater samples for analysis of all constituents listed above on a quarterly basis during the injection period, or until NCDENR—DWQ determines that a less-frequent monitoring schedule is appropriate. RECEIVED I DFNI3 I D Aquifer Prot ron Se ion DEC l ATTACHMENT F INJECTION MONITORING PLAN This ATTACHMENT presents the list of existing and proposed monitoring wells to be used; presents a list of monitoring parameters and analytical methods to be used; and includes a schedule for sampling to monitor the proposed injections. 1.0 INJECTION AND MONITORING WELLS As presente in the approved Corrective Action Plan, the proposed injection wells will be constructed in the vicinity of existing individual wells or groups of existing monitoring wells: • 1NJ-A: well 6801-MW23 (nature & extent)and 6801-MW24 (nature & extent) This injection 11 will be constructed upgradient of, and within 20 feet of, well 6801-MW23. We 1 6801-MW23 is located downgradient of well 6801-MW15, with well 6801-MW23 approximately equidistant between 6801-MW15 and 6801- MW24. The monitoring of well 6801-MW24 will allow for evaluating the effectiveness of the injectant at decreasing VOC concentrations at the facility boundary. • INJ-B: 6801-MW21S (compliance) and 6801-MW21D (compliance) This injection well will be constructed upgradient of, and within 20 feet of, well cluster 6801-MW21S and 6$01-MW21 D. The well cluster is located at the facility boundary, and near Old Fi d Creek. The monitoring of wells 6801-MW21S and 6801-MW21D will allo for ev uating the effectiveness of the injectant at decreasing VOC concentr tions at the acility boundary. • NJ-C: well 6801-MW 5 This injection well '11 be constructed upgradient of, and within 20 feet of, compliance well 68 1-MW 15. This injection well is intended to provide an additional source of odium permanganate for the VOC plume. • INJ-D: well6801- W16 This injection we 1 will be constructed upgradient of, and within 20 feet of, compliance well 6801-MW16. This injection,, well is intended to provide an additional source of sodium permanganate for the yoc plume. 2.0 MONITORING PARAMETERS During the remediation period, monitoring wells 6801-MW15, 6801-MW16, 6801- MW23, and 6801-MW24 will be periodically monitored for the following parameters: • carbon dioxide (RSK-175) • sodium (SW-846 6010C) j • chloride (EPA 300) • manganese (SW-846 6010C) • ORP (field measurement) 3.0 MONITO ' SCHEDULE The primary indicator of th- oxidation process is an increase in oxidation-reduction potential (ORP). Accordingly, ORP I be measured in the above-listed wells prior to the first injection of sodium permangana - and then at least during each semi-annual groundwater sampling event after the injections ' ve commenced. Groundwater collected from the above listed ells will be analyzed for the additional parameters listed at least annually. ATTACHMENT G CLIENT: THE COUNTY OF ORANGE FACILITY: ORANGE COUNTY REGIONAL LANDFILL-NORTH FACILITY LOCATION: CHAPEL HILL,NORTH CAROLINA PROJECT: UNDERGROUND INJECTION PERMIT CONSTRUCTION DATA FOR WELLS WITHIN 114 MILE OF INJECTION ZONE total diameter depth - depth depth `measured corrected elevation elevation diameter depth of to top to top to top well well ground measuring well type of borehole borehole screen screen sand bentonite depth stickup depth surface point designation well northing 'lasting (in inches) (in feet) (in inches) (in feet) (In feet) (in feet) _ On feet) (In feet) (in foot) (In feet) (In feet) ABANDONED(05-31-07) MW-07 MW-07R monitoring 808806.89 1977111.80 6 20 2 10 8 4 20 1.92 21.9 486.79 488.71 MW-14A monitoring 808951.24 1976364.48 9.25 12 2 7 6 4 12 _ 2.88 , 14.9 , 486.46 489.34 MW-148 monitoring 808945.19 1976368.22 8 31.5 2 18 16 14 31.5 2.66 34.2 486.30 488.96 MW-15 monitoring 808376.68 1976958.21 8 28 2 13 8 6 28 2.36 30.4 481.29 483.65 MW-16 monitoring 807986.58 1976739.73 8 35 2 15 6.5 5.5 35 2.47 37.5 480.44 482.91 MW-17 monitoring 807869.32 1976301.73 8 50 2 30 22 21 50 2.54 52.5 492.83 495.37 MW-215 monitoring 808049.25 1977137.08 8 23 2 13 11 7 23 2.14 25.1 474.70 476.84 MW-210 monitoring 808.041.46 1977132.91 8 53 2 43 41 37 53 1.55 54.6 474.86 476.41 MW-22 monitoring 808915.13 1976521.36 8 63 2 53 50 46 63 1.92 64.9 481.56 483.48 MW-23 monitoring 808277.99 1977098.69 6 30 2 20 13 8 30 2.23 32.2 476.62 478.85 MW-24 monitoring 808212.67 1977145.27 6 36 2 26 24 5 36 2.40 38.4 475.45 477.73 MW-1025 monitoring 807433.02 1976435.98 0.5 25 2 10 8 6 27.79 1.95 29.7 495.06 497.3 MW-1020 monitoring 807424.89 1976408.35 0.5 55 2 40 38 36 _ 57.44 1.76 59.2 495.71 497.76 MW-1020R monitoring 807417.40 1976401.86 0.5 55 2 40 37 34 57.5 2.5 60.0 497.62 498.03 MW-1035 monitoring 807140.38 1976636.69 0.5 35 2 20 18 16 37.98 2 40.0 495.28 497.57 MW-1030 monitoring 807150.20 1976625.01 0.5 65 2 50 48 46 68.51 2.25 70.8 496 498.54 MW-104 monitoring 807258.97 1976833.53 0.5 35 2 20 18 16 38.14 1.89 40.0 492.72 494.91 MW-112 monitoring 806877.74 1976549.90 0.33 35 2 25 21 8 38 3 41.0 500.72 503.72 proposed INJ-A injection TBD TBD 10 40 - 4 8 6 4 TBD TBD TBD TBD TBD , proposed INJ-B injection TBD TBD 10 60 4 14 12 10 T8D TBD TBD TBD TBD proposed INJ-C injection TBD TBD 10 41 4 13 11 9 TB0 TBD TBD TBD TBD proposed INJ-D injection TBD TBD 10 50 4 16 14 12 TBD TBD TBD TBD TBD - ove mean sea level,unless otherwise noted. 21D,MW-22 were surveyed June,2000;wells MW-07R,MW-23 surveyed July,2007;wells MW-06R and MW-24 eyed June,2008) 1 ATTACHMENT H MAPS This ATTACHMENT presents the following FIGURES: FIGURE 1 —Site Location Map (from Corrective Action Plan) FIGURE 2—Site Plan FIGURE 3 —Potentiometric Surface Map FIGURE 4—Total VOC Plume Map i FIGURE 5—Cross-section A-A' FIGURE 5—Cross-section B-B' FIGURE 7—Proposed Injection Well DOCUMENTATION ASSOCIATED WITH THE ORIGINAL INJECTION PERMIT ISSUED ON DECEMBER 23, 2010 T f'1 LIQUOX® sodium permanganate EC-SAFETY DATA SHEET according to Regulation (EC)Ns 1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning .c fz U s® REACH Material Safety Data Sheet Page 1 of 9 Section 1 Chemical Product and Company Identification PRODUCT NAME: LIQUOX®sodium permanganate,NaMnO4 TRADE NAME: LIQUOR®sodium permanganate SYNONYMS: Perrnanganic acid sodium salt Revision Date: April 200$ Sodium permanganate USES OF SUBSTANCE: LIQUOR®sodium permanganate is a liquid oxidant recommended for applications that require a concentrated permanganate solution. COMPANY NAME(Europe): COMPANY ADDRESS: Barrio Nalon,sin CARUS NALON S.L. 33100 Trubia-Oviedo Espana,Spain INFORMATION: (34)985-785-513 EMERGENCY TELEPHONE: (34)985-785-513 COMPANY NAME(US): COMPANY ADDRESS: 315 Fifth Street CARUS CCORPORATION Peru,IL 6I354,USA INFORMATION: (815)223-1500 (815)224-6816 (FAX) www.caruscorporation.corn(Web) salesmkt(a caruscorporation.corn (Email) EMERGENCY TELEPHONE: (800)435—6856(USA) (815)223-1500 (Other countries) (800)424-9300(CHEMTREC®,USA) (703)527-3887(CHEMTREC®,Other countries) ' Section 2 Hazards Identification 1. EYE CONTACT Sodium Permanganate is damaging to eye tissue on contact. It may cause burns that result in damage to the eye. 2. SKIN CONTACT Momentary contact of solution at room temperature may be irritating to the skin,leaving brown stains.Prolonged contact is damaging to the skin. 3. INHALATION Acute inhalation toxicity data are not available. However,airborne concentrations of sodium permanganate in the form of mist may cause irritation to the respiratory tract. 4. INGESTION Sodium permanganate solution,if swallowed,may cause burns to mucous membranes of the mouth,throat,esophagus,and stomach. L11�U�X® sodium permanganate EC-SAFETY DATA SHEET according to Regulation(EC)Ns 1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning GARIJ ® REACH S Material Safety Data Sheet Page 2 of 9 Section 3 Hazardous Ingredients MATERIAL OR COMPONENT CAS NO. EINECS % HAZARD DATA Sodium Permanganate 10101-50-5 233-251-1 20-40 PEL/C 5 mg Mn per cubic meter of air TLV-TWA 0.2 mg Mn per cubic meter of air HAZARD SYMBOLS: rF .. EH-1 F-; Eyr;_„>. • 0 Xn RISK PHRASES: 8 Contact with combustibles may case fire. 22 Harmful if swallowed. 50/53 Very toxic to aquatic organisms,may cause Iong-term effects in the aquatic environment. SAFETY PHRASES: 17 Keep away from combustible materials. 24/25 Avoid contact with skin and eyes. 26 In case of contact with eyes,rinse immediately with plenty of water and seek medical advice. Section 4 First Aid Measures 1. EYES Immediately flush eyes with large amounts of water for at Ieast 15 minutes holding lids apart to ensure flushing of the entire surface. Do not attempt to neutralize chemically. Seek medical attention immediately. Note to physician: Decomposition products are alkaline. Brown stain formed is insoluble manganese dioxide. 2. SKIN Immediately wash contaminated areas with water. Remove contaminated clothing and footwear.(Caution: Solution may ignite certain textiles). Wash clothing and decontaminate footwear before reuse. Seek medical attention if irritation is severe or persistent. 3. INHALATION Remove person from contaminated area to fresh air. If breathing has stopped,resuscitate and administer oxygen if readily available. Seek medical attention immediately. 4. INGESTION _ Never give anything by mouth to an unconscious or convulsing person. If person is conscious,give large quantities of water or milk. Seek medical attention immediately. _ LIQUOX® sodium permanganate EC-SAFETY DATA SHEET according to Regulation(EC)Ns 1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning c.4 Ft u S REACH Material Safety Data Sheet Page 3 of 9 Section 5 Fire Fighting Measures NFPA*HAZARD SIGNS Health Hazard 1 = Materials which under fire conditions would give off irritating combustion products.(less than 1 hour exposure) Materials that on the skin could cause irritation. Flammability Hazard 0 = Materials that will not burn. Reactivity Hazard 0 = Materials which in themselves are normally stable,even under fire exposure conditions,and which are not reactive with water. Special Hazard- OX= Oxidizer *National Fire Protection Association 704(USA) FIRST RESPONDERS: Wear protective gloves,boots,goggles,and respirator. In case of fire,wear positive pressure breathing apparatus. Approach incident with caution. FLASHPOINT None FLAMMABLE OR EXPLOSIVE LIMITS Lower: Nonflammable Upper: Nonflammable EXTINGUISHING MEDIA Use large quantities of water. Water will turn pink to purple if in contact with sodium permanganate. Dike to contain. Do not use dry chemicals,CO2 Halone or foams. SPECIAL FIREFIGHTING PROCEDURES If material is involved in fire,flood with water. Cool all affected containers with large quantities of water. Apply water from as far a distance as possible. Wear self-contained breathing apparatus I and full protective clothing. UNUSUAL FIRE AND EXPLOSION Powerful oxidizing material. May decompose spontaneously if exposed to heat(I35°C/275°F). May be explosive in contact with certain other chemicals (Section I0). May react violently with finely divided and readily oxidizable substances. Increases -' burning rate of combustible material. May ignite wood and cloth. Section 6 Accidental Release Measures PERSONAL PRECAUTIONS Personnel should wear protective clothing suitable for the task. Remove all ignition sources and incompatible materials before attempting clean up. ENVIRONMENTAL PRECAUTIONS: Do not flush into sanitary sewer system or surface water. If accidental release into the environment occurs, inform the responsible authorities. Keep the product away from drains,sewers,surface and ground water and soil. STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED Contain spill by collecting the liquid in a pit or holding behind a dam(sand or soil). Dilute to approximately 6%with water,and then reduce with sodium thiosulfate,a bisulfite or ferrous salt solution. The bisulfite or ferrous salt may require some dilute sulfuric acid(10%w/w)to promote reduction. Neutralize with sodium carbonate to neutral pH,if acid was used. Decant or filter and deposit sludge in approved landfill. Where permitted,the sludge may be drained into sewer with large quantities of water. To clean contaminated floors,flush with abundant quantities of water into sewer,if permitted by federal,state,and local regulations. If not,collect water and treat as above. LIQU JA. sodium permanganate EC-SAFY TA Ile according Re Ns 7/2 of the EuropeanETDA Parliament EET and of the Councilto ,gulation of 18 December(EC) 2006190 concerning006 CA! Li REACH Material Safety Data Sheet Page 4 of 9 Section 7 Handling and Storage WORK/HYGIENIC PRACTICES Wash hands thoroughly with soap and water after handling permanganate solution. Do not eat,drink or smoke when working with sodium permanganate. Wear proper protective equipment. Remove clothing,if it becomes contaminated. VENTILATION REOUIREMETNS Provide sufficient mechanical and/or local exhaust to maintain exposure below the TLV/TWA. CONDITIONS FOR SAFE STORAGE Store in accordance with NFPA 430 requirements for Class II oxidizers. Protect containers from physical damage. Store in a cool,dry area in closed containers. Segregate from acids,peroxides,formaldehyde,and all combustible, organic,or easily oxidizable materials including antifreeze and hydraulic fluid. Section 8 Exposure Controls and Personal Protection RESPIRATORY PROTECTION In cases where overexposure to mist may occur,the use of an approved NIOSH-MSHA mist respirator or an air supplied respirator is advised. Engineering or administrative controls should be implemented to control mist. EYE Faceshield,goggles,or safety glasses with side shields should be worn. Provide eyewash in working area. GLOVES Rubber or plastic gloves should be worn. OTHER PROTECTIVE EQUIPMENT Chemically resistant clothing covering arms and legs,and rubber,or plastic apron should be worn. Caution:If clothing becomes contaminated,wash off immediately.Spontaneous ignition may occur with cloth or paper. Section 9 Physical and Chemical Properties APPEARANCE AND ODOR Dark purple solution,odorless BOILING POINT,760 mm Hg >101°C VAPOR PRESSURE(mm Hg) 760 mm at 105°C SOLUBILITY IN WATER% BY SOLUTION Miscible in all proportions with water PERCENT VOLATILE BY VOLUME 61-85%(as water) EVAPORATION RATE Same as water FREEZING POINT <-4.0°C SPECIFIC GRAVITY 1.16- 1.36 pH 6-9 OXIDIZING PROPERTIES Strong oxidizer.May ignite wood and cloth. EXPLOSIVE PROPERTIES Explosive in contact with sulfuric acid or peroxides, or readily oxidizable substances. LIQUOX® sodium permanganate EC-SAFETY DATA SHEET according to Regulation(EC)°.1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning CA Ft u Se REACH Material Safety Data Sheet Page 5 of 9 Section 10 Stability and Reactivity STABILITY Under normal conditions,the material is stable. CONDITIONS TO AVOID Contact with incompatible materials or heat(135°C/275°F)could result in violent exothermic chemical reaction. INCOMPATIBLE MATERIALS Acids,peroxides,and all combustible organic or readily oxidizable materials including inorganic oxidizable materials and metal powders. With hydrochloric acid,chlorine gas is liberated. HAZARDOUS DECOMPOSITION When involved in a fire,sodium permanganate may form PRODUCTS corrosive fumes. CONDITIONS CONTRIBUTING TO Material is not known to polymerize. • HAZARDOUS POLYMERIZATION Section 11 Toxicological Information SODIUM PERMANGANATE: Acute oral LDsp not known. 1.ACUTE TOXICITY Irritating to body tissue with which it comes into contact. No acute toxicity data is available for sodium permanganate. Toxicity is expected to be similar to that of potassium permanganate. The toxicity data for potassium permanganate is given below: INGESTION: LD 50 oral rat: 780 mg/kg male(I4 days);525 mg/kg female(14 days). Harmful if swallowed. ALD: I Og.Ingestion may cause nausea,vomiting,sore throat,stomach-ache and eventually lead to a perforation of the intestine. Liver and kidney injuries may occur. SKIN CONTACT: LD 50 dermal no data available. Major effects of exposure:severe irritation,brown staining of skin. INHALATION: LC 50 inhal. no data available. The product may be absorbed into the body by inhalation. Major effects of exposure:respiratory disorder,cough. 2.CHRONIC TOXICITY No known cases of chronic poisoning due to permanganates have been reported. Prolonged exposure,usually over many years,to heavy concentrations of manganese oxides in the form of dust and fumes may lead to chronic manganese poisoning,chiefly involving the central nervous system. 3.CARCINOGENICITY Sodium permanganate has not been classified as a carcinogen by ACGIH,NIOSH,OSHA,NTP,or IARC. 4.MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE Sodium permanganate solution will cause further irritation of tissue,open wounds, burns or mucous membranes. LIQUOX® sodium permanganate EC-SAFETY DATA SHEET according to Regulation (EC)Ne 1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning GA RUSE) REACH Material Safety Data Sheet Page 6 of 9 Section 12 Ecological Information ENTRY TO THE ENVIRONMENT Permanganate has a low estimated lifetime in the environment,being readily converted by oxidizable materials to insoluble MnO2. BIOCONCENTRATION POTENTIAL In non-reducing and non-acidic environments,MnO2 is insoluble and has a very low bioaccumulative potential. AQUATIC TOXICITY No aquatic toxicity data is available for sodium permanganate. Toxicity is expected to be similar to that of potassium permanganate. The toxicity data for potassium permanganate is given below: Rainbow trout,96 hour LC50 for potassium permanganate: 1.8 mg/L Bluegill sunfish,96 hour LC50 LC50 for potassium permanganate: 2.3 mg/L Milk fish(Chanos Chanos)/96 hour LC50,LC50 for potassium permanganate: >1.4mg1 Section 13 Disposal Considerations I WASTE DISPOSAL When it becomes a waste,sodium permanganate is considered a D001 hazardous(ignitable)waste. For disposal of sodium permanganate solutions,follow procedures in Section 6 and deactivate the permanganate to insoluble manganese dioxide. Dispose of it in a permitted landfill. Contact Cams Corporation for additional recommendations. Section 14 Transport Information USA(land,D.O.T.) Proper Shipping Name: 49 CFR172.101 Permanganates,inorganic,aqueous solution,n.o.s.(contains sodium permanganate) Hazard Class: 49 CFR172.101....Oxidizer ID Number: 49 CFRI72.10I....UN 3214 Packing Group: 49 CFR172.10I....II Division: 49 CFR172.101....5.1 European Labeling in ID Number: UN 3214 accordance Road/Rail ADR/RID Class 5.1 Transport(ADR/RID) Description of Goods: Permanganates,inorganic,aqueous solution,n.o.s.(contains sodium permanganate) Hazard Identification No. 50 European Labeling in Proper Shipping Name: Permanganates,inorganic,aqueous accordance with EC solution,n.o.s.(contains sodium permanganate) directive(Water,LM.O.) Hazard Class: Oxidizer ID Number: UN 3214 Packing Group: II Division: 5.1 Marine Pollutant: No LIQUQX® sodium permanganate EC-S DTA HeE according Re ( C)NP /2 o t EuropeanAFETY Parliament E and of the Councilto ,gulation of 18 December 200671907 concerning006fhe GAF US® REACH Material Safety Data Sheet Page 7 of 9 Section 14 Transport Information(contd.) European Labeling in Proper Shipping Name: Permanganates, inorganic,aqueous accordance with EC solution,n.o.s(contains sodium permanganate) directive(Air,I.C.A.O.) Hazard Class: Oxidizer ID Number: UN 32I4 Packing Group: 11 Division: 5.1 Section 15 Regulatory Information EUROPEAN AND INTERNATIONAL REGULATIONS: MARKINGS ACCORDING TO EU GUIDELINES: The product has been classified and marked in accordance with EU directives/ordinances on hazardous materials. CHEMICAL NAME CAS NO. EINECS UN NUMBER Sodium Permanganate 10I0I-50-5 233-251-1 UN 3214 CODE LETTER AND HAZARD DESIGNATION OF THE PRODUCT: c\VZ:" FTZSIal • 0 Xn Oxidizer Harmful Dangerous to the Environment RISK PHRASES: 8 Contact with combustibles may case fire. 22 Harmful if swallowed. 50/53 Very toxic to aquatic organisms,may cause long-term effects in the aquatic environment. SAFETY PHRASES: 17 Keep away from combustible materials. 24/25 Avoid contact with skin and eyes. 26 In case of contact with eyes,rinse immediately with plenty of water and seek medical advice. LIQUOX® sodium permanganate EC-SAFETY DATA SHEET accordingo to Regulation(EC)Jr I907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning C A R U S REACH Material Safety Data Sheet Page 8 of 9 Section 15 Regulatory Information(contd.) US FEDERAL REGULATIONS: CHEMICAL INVENTORY STATUS—PART I Ingredient CAS.NO. TSCA EC Japan Australia Sodium permanganate 10I01-50-5 Yes Yes CHEMICAL INVENTORY STATUS—PART 2 —CANADA— Ingredient CAS.NO. Korea DSL NDSL PHIL Sodium permanganate 10101-50-5 No No Yes This product has been classified in accordance with the hazard criteria of the Controlled Products Regulation (CPR,Canada)and the MSDS contains all of the information required by the CPR. FEDERAL,STATE&INTERNATIONAL REGULATIONS—PART 1 SARA 302 SARA 313 Ingredient CAS.NO. FAQ TPQ List Chemical Catg. Sodium permanganate 10101-50-5 N/A N/A No Yes (Manganese compounds) FEDERAL,STATE&INTERNATIONAL REGULATIONS—PART 2 Ingredient CAS.NO. CERCLA RCRA TSCA 8(dl Sodium permanganate 1010I-50-5 No D001 No Ingredient CAS.NO. CWC TSCA 12(b' CDTA SARA 311/312 Sodium permanganate 10101-50-5 No No 4545 Kg Ingredient CAS.NO, Acute Chronic Fire Pressure Reactivity Pure/Liauid Sodium permanganate 10101-50-5 Yes Yes Yes No No Liquid Ingredient CAS.NO. Australian Hazchem Code Poison Schedule WHMIS Sodium permanganate 10101-50-5 C,D2B LIQUOX® sodium permanganate EC-SAFETY DATA SHEET according to Regulation (EC)Na 1907/2006 of the European Parliament and of the Council,of 18 December 2006 concerning (—it ® REACH Material Safety Data Sheet Page 9 of 9 • Section 16 Other Information NIOSH National Institute for Occupational Safety and Health MSHA Mine Safety and Health Administration OSHA Occupational Safety and Health Administration NTP National Toxicology Program IARC International Agency for Research on Cancer PEL Permissible Exposure Limit C Ceiling Exposure Limit TLV-TWA Threshold Limit Value-Time Weighted Average CAS Chemical Abstract Service EINECS Inventory of Existing Chemical Substances(European) Chithambarathanu Pillai(S.O.F.) April 2008 The information contained herein is accurate to the best of our knowledge. However,data,safety standards and government regulations are subject to change and,therefore,holders and users should satisfy themselves that they are aware of all current data and regulations relevant to their particular use of product, CARUS CORPORATION DISCLAIMS ALL LIABILITY FOR RELIANCE ON THE COMPLETENESS OR ACCURACY OR THE INFORMATION INCLUDED HEREIN CARUS CORPORATION MAKES NO WARRANTY,EITHER EXPRESS OR IMPLIED,INCLUDING,BUT NOT LIMITED TO,ANY WARRANTIES OF MERCHANTIABQ,ITY OR FITNESS FOR PARTICULAR USE OR PURPOSE OF THE PRODUCT DESCRIBED HEREIN All conditions relating to storage,handling,and use of the product are beyond the control of Canis Corporation,and shall be the sole responsibility of the holder or user of the product. CARUS CORPORATION, 315 5TH STREET,PERU,ILLINOIS 61354 CARUS NALON S.L. IS A DIVISION OF CARUS CORPORATION, 315 5TH STREET,PERU,ILLINOIS 61354 Responsible Care' Cood Chemistry at Work --.L is a registered service mark of Carus Corporation.LIQUOX'sodium permanganate is a trademark of Carus Corporation. CARUSi s a registered trademark of Carus Corporation.Copyright 1998.Responsible Care®is a registered service mark of the American Chemistry Council. DOCUMENTATION ASSOCIATED WITH THE ORIGINAL INJECTION PERMIT ISSUED ON DECEMBER 23, 2010 1 {' 1r. • 1 .rt 4 , :10/ il. 1/17.:i r IP, Ir'‘..) p ,,o* i f•\.:-L. •ill," • 4) 11* .,--/— r...? :„..s ti," I). ,,, i • _________0 /c---. lc -14-511:4 .� 0, 1r ( } /+`••/\,-___ �` • I sle c„...) $ s.,\Ir.v. (......‘,::4( of ) 1 , \ r i.i.m.. 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' .' -. - A Draper Aden Associates SITE LOCATION MAP FIGURE s �"/.r•�'\ Engineering•Surveying•Environmental Services ORANGE COUNTY LANDFILL �./ 8090 Villa Park Drive Blacksburg,VA CORRECTIVE ACTION PLAN 1 Richmond,VA 23228 Charlottesville,VA Orange County,North Carolina d 804-264-2228 Fax:804-264-8773 Hampton Roads,VA WANRo0592-82 n NOTF s: 1. AERIAL SURVEY WAS FLOWN ON APRIL 5, 2007 I BY SPAkAL DATA CONSULTANTS ON BENALF OF SURVEYING. _- ---Y , P.A., 210 BLANTON BLDG., MAPoON, NORTH CAROUNA i J52 in-in 1 aerw r.E.a ` i� •,�• roaar 2 HORIZONTA{.DATUM IS WAD 27. VERTICAL DATUM 15 NAVD 88. - -.ar►rs! - '` I'u k 3. LOCATONS OF EXISTING MONITORING WELLS ARE BASED ON SURVEY `-_ ll -- I • E t: DATA PROVIDED BY ORANGE COUNTY. �_. r: - m-1: aa._y M N4 ? - CU 4. LOCATIONS OF ELO5TING GAS PROBES AT NORTH LANDFILL ARE -w•fEr BASED ON SURVEY DATA PROVIDED BY ORANGE COUNTY DATED �. -- _-. ... N-. ► 02/14/2007. LOCATIONS Of GAS PROBES GP-01 THROUGH GP-19 \ / _... 'r �- � I w ! } t ARE APPROXIMATE. � '- - . 5. LOCATIONS OF EXISTING GAS PROBES GP-001 THROUGH GP-CD13 - I •+� ARE BASED ON FIELD LOCATION USING HAND-HELD CPS BY DRRA "- •� r � - (, r! e e °� ADEN ASSOCIATES ON 01/27/2009. Fes"' - _ • , -. , - CLOSEC - `Aoa-w W E --s,}_OGA7FONs-OF f3BST946-GAS R©BE�-o%--�,H I 'THROUGH :'-▪"'_ --- --.- _ -- _ - --- `- C-D - I I -_ .E MU& O C GP-CD-18 ARE BASED ON FIELD SURVEY PERFORMED BY SUMAE .i " - • L CONSULTN'IC ON 05/29/ 2009. 4M- -_- �� _T ,1 } / , I \ I I 7. THE SITE INCLUDES ACTIVE LANDFILLS y11TH PLACE]IENT OF 1 �.��..�� �~ - . , '� '`••. 1 •h � AND OPERATIONAL MAINTENANCE PERFORMED DAILY. THEREFORE;"TAE =' 23. I Fi', EXISTING SITE CONDITIONS AND CONTOURS MAY DIFFER AT THE TIME V- �----_ A I OF CONSTRUCTION FROM THOSE SHOWN ON THE PLAN. .�.,-- .. a ` S`,�• �� 1 ,I� U1-ado .�I.. �ir� c B. THE BOUNDARY SHOWN ON THES SHEET WAS PROVIDED BY ORANGE 1 __.-� ?. I �i:�._ ^e COUNTY AND WAS NOT CONFIRMED BY AN ACTUAL FIELD SURVEI'. w711+<4� v r , }__ 9. 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LOCATIONS OF EXISTING MONITORING WEI.LS ME BASED ON SURVEY - DATA PROVIDED BY ORANGE COUNTY- "�-- `--- - s e - 1 I N'.\ I N 4. LOCATIONS OF EXISTING GAS PROBES AT NORTH LANDFILL ARE : - BASED ON SURVEY DATA PROVIDED BY 1ORANGE COUNTY DATED �,;, f 'Is - 02/14/2007. LOCATIONS OF GAS PROBES GP-D1 THROUGH GP-19 \.. .. I ~- _. •_ _._. I wM.1 i ^l y ARE APPROXIMATE - _-. I a'. _ -, �. 1, _ ��'�...., I.-_ I >�1�W y } Clt 5. LOCATIONS OF EXISTING GAS PROBES CP-001 THROUGH OP-0013 ` 1 - ,� ��` f MLW p T. ARE BASED ON FIELD LOCATION USING HAND-HELD GPS BY Dom;' "' 1 - I •~ r >r `e ADEN ASSOCIATES ON 01 7 «r' -- V /2/2Doe. ys \ CLOSEC ail . 'n ae.. Q 42 m u = 6. LOCATIONS-3F-E TI G-GGAS-PR�S-GP-Gpi4 THROW �+' - _ _ ___ _�,•� i OR-CD--1E ARE BASED ON FIELD SURVEY PERFORMED BY SUMhNrr -- ` .2 --._ h__ ._-. 1 _ CONSULTING ON 05/29/2009. ,-: .����.:.` -.t�1 - _ _ �.i Ji_L E `, 1�� r �w�_ r 7. THE SITE INCLUDES ACTIVE LANDFILLS lNTH PLACEMENT OFII AND OPERATIONAL MAINTENANCE PERFORMED DAILY. TH4REFORr'ITE .. •:.'- - I }.----...-- La: EXISTING STE CONDITIONS AND CONTOURS MAY DIFFER AT THE TIME _.- - ;� i - �� • OF CONSTRUCTION FROM THOSE SHOWN ON THE PLAN. I- • 1!4-911• .•111.. .I..l. e 8. THE BOUNDARY SHOWN ON THIS SHEET WAS PROVIDED BY ORANGE 1 ° , ' - _. A COUNTY.AND WAS NOT CONFIRMED BY AN ACTUAL FIELD SURVEI'. � - n � `'..l � JJJ 9. GROUNDWATER ELEVATIONS COTAINLO ON MAY 19 -MAY 21, 2009. - • • ��� rn K .‘ - .. -', '‘., \,, / fI M W •IA i �,; \\ , , In - .o Sj igisfi!fi. \\ r ..., of Q I • ws.2J I r L irr. • MLM o rrr la T' —T- v �- Ii \' ' . _4--_� '. /_ • � V wII 1,44 III.l,1 i NM- {ITT e..- .-... -T- V ,° 'PK _- _ _Z �M 11 • 1-140 r 1 ; -_= _ — - .. J U _ � ' CI I- ir,1977\‘‘:7::.---- 71- .- 7:.:1-.. .L. .....//:: . f--):-\\:".....:,... -...----Yeit.:11.''‘'?Iii.1,11..:' :,:.'::i._,,,"'..-11'...„.1:111;#11:7'.--"..;.7. --. 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AS SHOWN GRAPHIC SCALE i •/ �.... 9�� - — -1 1 1�. \ 09,0172010 Iw s s woy '_t rar 1 ' Y\� \ �Pnwec,l+l.�Kr,. w n+N +. 00592 96 «awl, II °'- \ FIGURE 3 500 500 Notts: A A' 1. SUBSURFACE CONTACTS ARE BASED ON 0- WIDELY-SPACED DATA POINTS.AND ACTUAL SUBSURFACE CONDITIONS MAY VARY FROM THOSE SHOWN. CONTACTS ARE DASHED WHERE INFERRED. 490 - 490 i 2. S RATIGRAPHY IS GENERALIZED AS FOLLOWS: t{) SOILS-RED-BROWN,SILT TO SILTY CLAY \ I I SAPROLITE-WHITE,TAN,LIGHT BROWN, \ - I ORANGE,SILT.SANDY SILT, \ < SAND:SOME DECOMPOSED (NI ROCK FRAGMENTS 480 1 1 480 BEDROCK-GRAY.GRAY-GREEN.BLUE-GREEN, --- `` --- 1 m FRACTURED.PHYLLITE TO GREENSTONE - .- - _ r • v SOIL - POTENTIOVIETRIC SURFACE IS BASED ON WATER LEVELS COLLECTED DURING MAY 19.21,2009. 470! �� _ SAPROLITE 470 4. TOTAL VOC PLUME CONCENTRATIONS ARE BASED ON — — i 1 SAMPLING EVENT(NOV.2009),AND ARE IN UGIL(PPB), —.... • , 4 E — BEDROCK N } I✓ _ I , 460 _ 460 RECEIVED/DENR/DWQ _ Aquifer Protection Section DEC 18 2010 `` _ '` - 450 i — = 450 G`" 440 - 440 P 0 J Q � VERTICAL SCALE: 430 430 N 1 inch = 10 feet m HORIZONTAL SCALE: 420 - 420 q, 1 inch = 100 feet N m n n 2 N k Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION A-A' SCALE: AS SHOWN FIGURE g Engineering • Surveying • Environmental Services DRAWN JCC ORANGE COUNTY LANDFILL 5 0 8090 Villa Park Drive Blacksburg,VA CHECKED JCD Richmond,VA 2322E Charlottesville,VA DATE 8130110 UNDERGROUND INJECTION PERMIT APPLICATION PROJECT: R00592-96 w, 804-264-2228 Fax:804-264-8773 Hampton Roads,VA DEC la S415 Itotwabascoots PcROu 4ECEV‘ED Oafg D B n 1 Y B' NOTES: Wa-. I. SUBSURFACE CONTACTS ARE BASED ON WIDELY-SPACED DATA POINTS.AND ACTUAL 0 SUBSURFACE.CONDITIONS MAY VARY FROM J THOSE SHOWN. CONTACTS ARE DASHED 4g0 \ La 1490 \ WHERE INFERRED. \ r — — --- __ ^` STRATIGRAPHY IS GENERALIZED AS FOLLOWS: _ ~ . /0— —" �. — — I t / ~ J O SOILS—RED-BROWN.SILT TO SILTY CLAY ��z _ _ �� // \\ ~\�~�'` Fa cnl SAPROLITE—WHITE.TAN.LIGHT BROWN, 460 • \ NI 480 ORANGE.SILT,SANDY SILT, SAND;SOME DECOMPOSED r- ROCK FRAGMENTS �---,- M BEDROCK—GRAY,GRAY-GREEN BLUE-GREEN, FRACTURED.PHYLLITE TO GREENSTONE t/ Y 470 t 470 3. POTENTIO\IETRIC SURFACE IS BASED ON WATER LEVELS ----___---- COLLECTED DURING MAY 19-21.2009. z. 4. TOTAL-VOC PLUME CONCENTRATIONS ARE BASED ON `(= SOIL 1 SAMPLING EVENT(NON'.2009),AND ARE IN UWE(PPB). 460 BEDROCK e � - 460 RECEIVED/DENR/DWQ E _ Aquifer Protection '�'' rote Section ,, _ DEC 18 ��� 450 { _ ;� `" _ 450 il s N R_440 440 g i n tw 2 430 \`� N \ — 430 0 VERTICAL SCALE: \ \, - - a. i = 2 1 inch = 10 feet N 420 c\ -_ - 420 s HORIZONTAL SCALE: ~_''°-`___ 1 inch = 100 feet a i 410 410 l I a Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION B-B' SCALE: AS SHOWN FIGURE 54 toft•oneNt Engineering • Surveying • Environmental Sen>iees DRAWN JCC ORANGE COUNTY LANDFILL 6 7 8090 Villa Park Drive Blacksburg,VA CHECKED J C D Richmond. VA23228 Charlottesville.VA I DATE 8/30/10 UNDERGROUND INJECTION PERMIT APPLICATION PROJECT: R00592-96 c 804-264-2228 Fax'.804-264.8773 Hampton Roads,VA 1A-3r rice? .(0 130 500 500 NOTES: A J CL 1. SUBSURFACE CONTACTS ARE BASED ON WIDELY-SPACED DATA POINTS,AND ACTUAL SUBSURFACE CONDITIONS MAY VARY FROM THOSE SHOWN. CONTACTS ARE DASHED WHERE INFERRED. 490 \ I 490 U '� 2. STRATIGRAPHY 1S GENERALIZED AS FOLLOWS: \ I T I SOILS—RED-BROWN,SILT TO SILTY CLAY \\ -- M SAPROLITE—WHITE,TAN,LIGHT BROWN, \ Q ORANGE,SILT,SANDY SILT, , CV SAND;SOME DECOMPOSED 480 .` z 1 `; - - 480 ROCK FRAGMENTS S 1 —` BEDROCK—GRAY,GRAY-GREEN,BLUE-GREEN, �.+1 r FRACTURED,PHYLLITE TO GREENSTONE SOIL — 3. POTENTIOMETRIC SURFACE IS BASED ON WATER LEVELS 1m-`' T 0--- ..M——— ::: • = 20C - y I , F • t = - - I �'a I W -16 / = I a I ,' +450 .• < < ,� 450 / i Q �[ _ _ / �/ i _ -ry ~ W = - 440t a440 _ _W o iii VERTICAL SCALE: 430 1430 1 inch = 10 feet . . HORIZONTAL SCALE: 420 - - — 420 7. 1 inch =200 feet 0 U a rl'� " Il y.,r DtTYPN r uvvu I a Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION A-A' AquiferPrnterf�,on FIGURE Surveying • EnvironmentalServices DRAWN JCC SEP 2 3 °ALE: AS SHOWN .� Engineering . CHECKED JCD ORANGE COUNTY LANDFILL 2110 5 8090 Villa Park Drive Blacksburg,VA o Richmond,VA 23228 Charlottesville,VA DATE 8/30/10 UNDERGROUND INJECTION PERMIT APPLICATION PROJECT: R00592-96 804-264-2228 Fax 804-264-8773 Hampton Roads.VA B ' Y B' NOTES: 3 4.1 I. SUBSURFACE CONTACTS ARE BASED ON ` _I\ WIDELY-SPACED DATA POINTS,AND ACTUAL tl o SUBSURFACE CONDITIONS MAY VARY FROM 490 \ - _1w 490 THOSE SHOWN. CONTACTS ARE DASHED _ Li WHERE INFERRED. ` r 2. STRATIGRAPHY IS GENERALIZED AS FOLLOWS: ` / 0 SOILS-RED-BROWN,SILT TO SILTY CLAY Z 3 / �\ / \ SAPROLITE-WHITE,TAN,LIGHT BROWN, 480 ~ S - _ `- \ tL1O NI / 480 `ORANGE,SILT,SANDY SILT, \ I I I I / SAND;SOME DECOMPOSED Z' ROCK FRAGMENTS BEDROCK-GRAY,GRAY-GREEN,BLUE-GREEN, FRACTURED,PHYLL TO GREENSTONE i L/ y' 470 I -_�`_ I L__• 470 3. POTENTIOMETRIC SURFACE IS BASED ON WA LEVELS \ 1 l -1 t COLLECTED DURING MAY 19-21,2009. - SOiL 1 -' 4. TOTAL VOC PLUME CONCENTRATIONS ARE BASED ON \� _ _ '+I I t 1 SAMPLING EVENT(NOV.2009),AND ARE IN UGlL(PPB). _ _ t I t 460 BEDROCK = - ,\-sC J _ tl, 11 III 460 I I 5PPR = I 1 i 10 = _ __ = 1 i - C I , , - I I C,�.I - = f y I I I W 450 c - = 1 ; T 450 w c _ - I I _ ' ' p o - - I 10 1 E I - `J I r� 440 1 i 440 ri .0 - - I W = L I I I I I i430 ; 430 VERTI: - et AL SC E: - - C 1 a = 420 - `__ .'' 420 HORIZONTAL SCALE: - -- ---- - - -- N 1 inch = 200 feet 6 0 0 i 410 - 410 FL � �uENR/ WQ N Draper Aden Associates DESIGNED JCD GEOLOGIC CROSS-SECTION B-B' AquiferProfertlorr,ce FIGURE �3CALE: AS SHOWN Engineering Surveying Environmental DRAWN JCC ORANGE COUNTY LANDFILL ��� 3 20�D n 8090 Villa Park Drive Blacksburg,VA CHECKED JCD 6 S Richmond,VA23228 Charlottesvitte,VA DATE 8/30110 UNDERGROUND INJECTION PERMIT APPLICATION PROJECT: R00592-96 g 804-264-2228 Fax:804-264-8773 Hampton Roads,VA Tom" 7). NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder John E. Skvarla, Ill Governor Director Secretary December 16,2013 Gayle Wilson,Director Orange County Solid Waste Management P.O.Box 17177 Chapel Hill,NC 27516 • Ref: Issuance of Injection Permit WI0500293 Orange County Landfill-North Chapel Hill, Orange County,North Carolina. Dear Director Wilson: In accordance with the application for permit renewal received on August 7,2013 and the supporting information received between August 14, 2013 and December 4, 2013, we are forwarding permit number WI0500293. This permit is to inject , potassium Permanganate to remediate ground water contaminated with chlorinated solvents at the facility referenced above. This permit shall be effective from the date of issuance, December 16, 2013, until November 30, 2018, shall void Permit WI0500293 issued December 23, 2010, and shall be subject to the conditions and limitations stated therein, including the requirement to submit a fmal project evaluation as stated in PART VII - MONITORING AND REPORTING REQUIREMENTS.. Please read the entire permit to ensure that you are aware of all compliance requirements of the permit. Please note the pre-injection groundwater sampling and reporting requirements stated in Permit Condition II.1. The data will he examined to verify that the metals' concentrations are decreasing and that injection activity can be authorized. You will need to notify this office by telephone 48 hours prior to initiation of injection activity. In order to continue uninterrupted legal use of the injection facility for the stated purpose,you must submit an application to renew the permit 120 days prior to its expiration date. Please contact me at 919-807-6352 or by email at david.goodrich@ncdenr.gov if you have any questions about your permit. • Best Regards, David Goodrich,L.G. Hydrogeologist cc: Rick Bolich,Raleigh Regional Office,Water Quality Regional Operations Section Ervin Lane,Division of Waste Management-Solid Waste Management Section Joel C.Daniel,Draper Aden Associates, 8090 Villa Park Drive,Richmond,VA 23228 WI0500293 Permit File 1636 Mail Service Center,Raleigh,North Carolina 27699-1636 Location:512 N Salisbury St,Raleigh,North Carolina 27604 Phone:919-807.64641 FAX 1:919-807-6496 Internet www.ncwaternuality.orq An Equal Opportunity 1 Affirmative Action Employer Goodrich, David From: Rip Ford <rford@daa.com> Sent: Wednesday,August 14, 2013 11:53 AM To: Goodrich, David Cc: Gordon Dively;Gayle Wilson (gwilson@orangecountync.gov) Subject: OCSWM -injection permit- intent Good morning, David. Yes, the facility would like to inject permanganate into the two injection wells. On Friday of last week (August 9), Gordon Dively (OCSWM) and I inspected the injection wells and two target wells. • The groundwater in the injector associated with MW-21S was dark purple in color, suggesting that the permanganate at that location remains active. The groundwater in well MW-21S, however, was clear. The groundwater in the injector associated with MW-23 was clear, suggesting that the permanganate injected at that location has migrated in the downgradient direction. The groundwater in well MW-23 was also clear. The facility may wish to re-inject permanganate-into the injector associated with MW-23 in the near future, if practicable. Thank you for your assistance. Regards, 'Rip' Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich(a ncdenr.gov] Sent:Tuesday, August 13, 2013 10:16 AM To: Rip Ford Subject: RE: OCSWM - injection permit Dr. Ford, I received your recent voicemail message,and thank you for returning my call. I am preparing the renewal of the Orange County Regional Landfill Permit(WI0500293),and need to know if more injections are intended so that the language of the permit will include the authorization of those injections. Thank you. Regards, David Goodrich 1 Aquifer Protection Section Central _ From: Rip Ford fmailto:rford@daa.com] • Sent:Tuesday, August 13, 2013 9:58 AM To: Goodrich, David _ Subject: OCSWM - injection permit Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 www.daa.com Virginia Commonwealth University Center for Environmental Studies www.vcu.edu' 2 Goodrich. David From: Goodrich, David Sent: Wednesday,August 21, 2013 9:55 AM To: Rice, Eric Subject: Possible options for renewing the Orange County Landfill WI0500293 Injection Permit Eric, I have been examining the data for the post-injection monitoring at this facility and concur that, although the concentrations of certain substances(injected, "liberated by injection",and original contamination) appear to have peaked and are coming down,there is an issue with their current concentrations and the renewal of this permit. I think that in any event,we need to modify the permit by bringing it into the new 02C.0200(May,2012) Injection Well Rules.To be thorough about examining the options available, I looked at the possibility of"Permitting by Rule" under 02C.0225 (b) (3) as a "Pilot Test".Although the area intended for injection and treatment appears to be less than 5%of the total area impacted by groundwater contamination,this rule would not appear to work in this situation, because a pilot test has to be a small-scale, preliminary test to see if a particular approach is viable in a particular situation.A pilot test is supposed to be followed by a much larger scale remediation effort. The better approach,as you mentioned in our conversation yesterday, appears to be the application of Rule 02C.0225 (e) (2),which allows for the establishment of an injection zone that is exempt from meeting groundwater standards and includes the implementation of groundwater monitoring beyond the treatment zone in accordance with a monitoring plan that is approved by APS. I welcome your comments on this approach,and any other ideas you may have. David yel- l ell ve Pleir 1-47/14f-z,1- d 7 t2/ fr " clt a 'el c44,7 7-4 e Ate' e 4:74 s `� G4.1 e P&77 Lir t f / / gy . F • �r 1 • Goodrich, David From: Goodrich, David Sent: Thursday,August 29,2013 1:57 PM To: 'jdaniel@daa.com'; 'gwilson@orangecountync.gov' Cc: Rice, Eric Subject: Renewal of Orange County Landfill Injection Permit WI0500293 Mr. Daniel and Ms.Wilson, The Aquifer Protection Section is reviewing your application to renew the subject injection permit for the North (Closed) Facility portion of the Orange County Regional Landfill in Chapel Hill, NC.An examination of the groundwater monitoring data appears to indicate a correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards.This condition is in violation of the injection rules under which the permit was issued, and prohibits us from reissuing the permit. We are therefore requesting an opportunity to meet with you to discuss the situation and work with you to develop an alternate remedial strategy. Please contact me or Eric Rice by email at david.goodrichPncdenr.eov or eric.ricePncdenr.gov to set up a mutually convenient time for a meeting. Thank you. - Regards, David Goodrich Aquifer Protection Section Central Office 1 t • Goodrich, David From: Rip Ford <rford@daa.com> Sent Thursday,August 29, 2013 3:14 PM To: Goodrich, David Subject: Renewal of Orange County Landfill Injection Permit WI0500293 (LNF 02) Hello, David. Just a reminder that Joel Daniel no longer works at Draper Aden Associates. I have picked up the projects that Joel was working on, including the work with OCSWM. I will discuss this denial with OCSWM, and see how they wish to proceed. Regards, 'Rip' PS - Gayle Wilson is a man, not a "Ms" (a common mistake). Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Pieter Conradie Sent: Thursday, August 29, 2013 3:08 PM To: Rip Ford Subject: Fwd: Renewal of Orange County Landfill Injection Permit WI0500293 FYI Sent from my iPhone Begin forwarded message: From:"Goodrich, David" <david.goodrich@ncdenr.gov> Date:August 29,2013, 1:56:50 PM EDT To: "jdaniel@daa.com"<idaniel@daa.com>, "gwilson@orangecountync.gov" <gwilson @orangecountvnc.gov> Cc:"Rice, Eric"<eric.rice@ncdenr.gov> Subject:Renewal of Orange County Landfill Injection Permit WI0500293 Mr. Daniel and Ms. Wilson, The Aquifer Protection Section is reviewing your application to renew the subject injection permit for the North (Closed) Facility portion of the Orange County Regional Landfill in Chapel Hill, NC.An examination of the groundwater monitoring data appears to indicate a correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards.This condition is in violation of the injection rules under which the permit was issued, and prohibits us from reissuing the permit. 1 We are therefore requestins a..opportunity to meet with you to discuss situation and work with you to develop an alternate remedial strategy. Please contact me or Eric Rice by email at david.goodrich@ncdenr.gov or eric.rice@ncdenr.gov to set up a mutually convenient time for a meeting. Thank you. Regards, David Goodrich Aquifer Protection Section Central Office • 2 • • Goodrich, David From: Goodrich, David Sent: Friday,August 30, 2013 7:36 AM To: 'Rip Ford' Cc: Rice, Eric Subject: RE:OCSWM - injection - affected constituents Dr. Ford, The two substances of concern are the metals manganese and possibly mercury. Regards, David Goodrich From: Rip Ford lmailto:rford@daa.com] Sent: Thursday, August 29, 2013 3:41 PM To: Goodrich, David Subject: OCSWM - injection -affected constituents Hello, David. When you say "correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards", to which regulated constituents are you referring? The volatile organic constituents that we have been attempting to oxidize using permanganate? Or chromium, which appears to have increased along with the increased oxidation potential in the treatment zone? Thank you. Regards, Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 • www.daa.com Virginia Commonwealth University 1 Center for Environmental Studies www.vcu.edu From:"Goodrich, David"<david.goodrich a(�ncdenr.gov> Date:August 29, 2013, 1:56:50 PM EDT To:"idaniel@daa.com"<jdaniel@daa.com>,"gwilson@orangecountvnc.gov" <gwilson @ orangecountvnc.gov> Cc:"Rice, Eric"<eric.rice@ncdenr.gov> Subject: Renewal of Orange County Landfill Injection Permit WI0500293 Mr. Daniel and Ms.Wilson, The Aquifer Protection Section is reviewing your application to renew the subject injection permit for the North (Closed) Facility portion of the Orange County Regional Landfill in Chapel Hill, NC.An examination of the groundwater monitoring data appears to indicate a correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards.This condition is in violation of the injection rules under which the permit was issued,and prohibits us from reissuing the permit. We are therefore requesting an opportunity to meet with you to discuss the situation and work with you to develop an alternate remedial strategy. Please contact me or Eric Rice by email at david.goodrich@ncdenr.eov or eric.rice@ncdenr.gov to set up a mutually convenient time for a meeting. Thank you. Regards, David Goodrich Aquifer Protection Section Central Office 2 r zi Goodrich, David From: Rip Ford <rford@daa.com> Sent: Saturday,August 31,2013 12:51 PM To: Goodrich, David Cc: Rice, Eric Subject: RE:OCSWM - injection -affected constituents Thanks, David. Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrichCa ncdenr.gov] Sent: Friday, August 30, 2013 7:36 AM To: Rip Ford Cc: Rice, Eric Subject: RE: OCSWM - injection -affected constituents Dr. Ford, The two substances of concern are the metals manganese and possibly mercury. Regards, David Goodrich From: Rip Ford [mailto:rford@ daa.com] Sent:Thursday, August 29, 2013 3:41 PM To: Goodrich, David Subject: OCSWM - injection -affected constituents Hello, David. When you say "correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards", to which regulated constituents are you referring? The volatile organic constituents that we have been attempting to oxidize using permanganate? Or chromium, which appears to have increased along with the increased oxidation potential in the treatment zone? Thank you. Regards, 1 Leonard"Rip"Ford (PhD,PG) • Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 www.daa.com Virginia Commonwealth University Center for Environmental Studies www.vcu.edu From: "Goodrich, David" <david.goodrich@ncdenr.eov> Date:August 29, 2013, 1:56:50 PM EDT To: "idaniel@daa.com" <idaniel@daa.com>, "gwilson@orangecountvnc.eov" <gwilson@orangecountync.gov> Cc: "Rice, Eric"<eric.rice@ncdenr.gov> Subject: Renewal of Orange County Landfill Injection Permit W10500293 Mr. Daniel and Ms.Wilson, The Aquifer Protection Section is reviewing your application to renew the subject injection permit for the North (Closed) Facility portion of the Orange County Regional Landfill in Chapel Hill, NC.An examination of the groundwater monitoring data appears to indicate a correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards.This condition is in violation of the injection rules under which the permit was issued, and prohibits us from reissuing the permit. We are therefore requesting an opportunity to meet with you to discuss the situation and work with you to develop an alternate remedial strategy. Please contact me or Eric Rice by email at david.goodrich@ncdenr.eov or eric.rice@ncdenr.gov to set up a mutually convenient time for a meeting. Thank you. Regards, David Goodrich Aquifer Protection Section Central Office 2 • • Goodrich, David From: Rip Ford <rford@daa.com> Sent: Tuesday, September 24, 2013 12:47 PM To: Goodrich, David Cc: Rice, Eric Subject: OCSWM -injection program - meeting date (LNF 01) Good afternoon, David. We would like to meet with you to discuss the effects of the injection program. Would either of these dates 1 times work for you? 1. Friday, October 25: 1 PM ��Tc iF C pw 2. Thursday, October 24: .1 PM _ - ! `� Thank you. :p.�: 3 o P , O (}.) � Regards, OGS�'° Rip ) — 2 3o Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrichCa�ncdenr.govl Sent: Friday, August 30, 2013 7:36 AM To: Rip Ford Cc: Rice, Eric Subject: RE: OCSWM - injection -affected constituents Dr. Ford, The two substances of concern are the metals manganese,and possibly mercury. Regards, David Goodrich From:,Rip Ford [mailto:rfordt daa.com] Sent: Thursday, August 29, 2013 3:41 PM To: Goodrich, David Subject: OCSWM - injection -affected constituents Hello, David. When you say "correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards", to which regulated constituents are you referring? 1 • The volatile organic constituents that we have been attempting to oxidize using permanganate? Or chromium, which appears to have increased along with the increased oxidation potential in the treatment zone? Thank you. Regards, Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 www.daa.com Virginia Commonwealth University Center for Environmental Studies www.vcu.edu From:"Goodrich, David" <david.goodrich@ncdenr.gov> Date:August 29, 2013, 1:56:50 PM EDT To: "idaniel@daa.com" <jdaniel@daa.com>, "gwilson@orangecountync.gov"<gwilson@oraneecountvnc.gov> Cc:"Rice, Eric"<eric.rice@ncdenr.gov> ' Subject: Renewal of Orange County Landfill Injection Permit WI0500293 Mr. Daniel and Ms.Wilson, The Aquifer Protection Section is reviewing your application to renew the subject injection permit for the North (Closed) Facility portion of the Orange County Regional Landfill in Chapel Hill, NC.An examination of the groundwater monitoring data appears to indicate a correlation between permitted injection activity and constituent concentrations exceeding the 2L Groundwater Quality Standards.This condition is in violation of the injection rules under which the permit was issued, and prohibits us from reissuing the permit. We are therefore requesting an opportunity to meet with you to discuss the situation and work with you to develop an alternate remedial strategy. Please contact me or Eric Rice by email at david.goodrich@ncdenr.gov or eric.rice@ncdenr.Pov to set up a mutually convenient time for a meeting. Thank you. Regards, David Goodrich Aquifer Protection Section Central Office 2 Goodrich, David From: Goodrich, David Sent Tuesday, October 01, 2013 11:24 AM To: 'Rip Ford' Cc: Gordon Dively; Lane, Ervin; Ritter, Christine; Barbara Hadley;Watts, Debra; Slusser, Thomas; Rice, Eric Subject RE:OCSWM - North SLF- Hydrogeochemical Assessment(LNF) - link to FTP site... Dr. Ford, Thank you for sending us the contact information to the FTP site.At the present time, the attendees for the meeting of October 24th from Aquifer Protection will be myself, my supervisor Debra Watts,Thomas Slusser, and Eric Rice. We will review the information you sent to us,which will be helpful. Regards, David Goodrich From: Rip Ford [mailto:rford@daa.com] • Sent: Tuesday, October 01, 2013 9:56 AM To: Goodrich, David Cc: Gordon Dively; Lane, Ervin; Ritter, Christine; Barbara Hadley Subject: OCSWM - North SLF- Hydrogeochemical Assessment(LNF) - link to FTP site ... Good morning, David. I have forwarded a link to our FTP site (see below), from which NCDENR may download a digital copy (PDF) of a hydrogeochemical assessment of the injection area, at OCSWM North Sanitary Landfill, which we just completed, for your use. The attached information is not an exhaustive study, and is certainly not intended to be the "last word" on what is going on in the injection areas, but is intended to serve as a point-of- departure for our meeting on October 24. I will also bring a couple of printed copies with me to the meeting.. We do not know who, from NCDENR, will be present at our meeting, so I have copied this link to Ervin L and Christine R, as they have also been involved with this facility. Gordon Dively, perhaps Gayle Wilson, and I will be representing OCSWM, at the meeting. If you encounter any problems while downloading the document, please feel free to contact Barb Hadley, directly, for assistance. Regards, Rip Leonard"Rip" Ford (PhD,PG) 1 1 , Environmental Science and Engine to r From: Barbara Hadley Sent: Monday, September 30, 2013 11:12 AM To: Rip Ford Subject: OCSWM - Hydrogeochemical Assessment memo ftp link You can access the OCSWM -Hydrogeochemical Assessment memo by clicking the link below: ftp://ftpuser:draper@ftp2.daa.com/download/OCSSWM Hydrogeo Right-click the file and scroll down to"Save target as...". Browse to where you want the file to download and save there. Do not attempt to open the file while it still resides on the ftp site, as this may lock up your computer. If you have any problems accessing the file, please let me know. Thanks, Barbara Hadley Environmental Project Technician Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact direct 804.237.1807/fax 804.264.8773 www.daa.com All the Stormwater News That's Fit to Print-The Inlet APlease consider the environment before printing this email 2 1 • Goodrich, David From: Rip Ford <rford©daa.com> • Sent: Wednesday,October 23, 2013 11:39 AM To: Goodrich, David Subject: RE:checking in about OCSWM ... That is correct, David. Four injections have been performed, to date. We are not asking to increase the number of injections, but to extend the period of time over which we may complete the injection program. I hope that helps. PS -Just now picked up your telephone message as well - I can call you back if you want to discuss further- I have"another meeting at noon. Thank you, Rip Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich@ncdenr.ctovl Sent: Wednesday, October 23, 2013 10:35 AM To: Rip Ford Subject: RE: checking in about OCSWM ... Hi Rip, It is my understanding that the renewal of the OCSWM permit W10500293 is essentially a request for an extension of time to perform injections that have not yet taken place, but which are allowed under the existing permit, issued on December 23, 2010. According to the "Assessment of Underground Injection Program Activities" document dated August 1, 2013, which was submitted with the permit renewal application, a total of four injection events have taken place so far at the subject site, and eight events were planned under the existing permit. No "new" injections are planned, other than those which have already been permitted by the original permit(which has run out of time). Please contact me by email at your earliest convenience to confirm that this is the current situation with the project_ Thank you. David From: Rip Ford Imailto:rford@daa.comj Sent: Wednesday, October 23, 2013 9:20 AM To: Goodrich, David Subject: checking in about OCSWM ... 1 • Hi, David. Are you guys still good for tomorrow afternoon? Also, what is the parking situation at your location? • Regards, Rip Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 www.daa.com Virginia Commonwealth University Center for Environmental Studies www.vcu.edu 2 r • Goodrich, David From: Rip Ford <rford@daa.com> Sent: Thursday, October 24, 2013 11:14 AM To: Goodrich, David Subject: RE:OCSWM permit Thanks, David. Good talking with you this morning. Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich©ncdenr.gov] Sent:Thursday, October 24, 2013 10:33 AM To: Rip Ford Cc: Rice, Eric Subject: OCSWM permit Hi Rip, Thank you for your recent voicemail. I should be in the office all day today(Thursday),so please call me at your convenience. After further discussion with our Division,we would like to renew the subject permit for a 5-year period with the provision that the upcoming injections (5 through 8, I believe)would be delayed so that additional monitoring of the groundwater can be completed for the constituents of concern.We would like to have the results of at least two (future) quarterly sampling events to review the trend data on the constituents of concern.The Division is interested to see if metals concentrations are increasing or decreasing before any more injections take place. Regards, David Goodrich Water Quality Permitting Section 1 Goodrich, David From: Goodrich, David Sent: Thursday, November 21, 2013 11:54 AM To: Rip Ford (rford@daa.com) Subject: OCSWM Permit WI0500293 Attachments: WI0500293dpTranslet131115.docx;WI0500293dp131115.dooc Hi Rip, I am attaching the draft permit and its cover letter herewith for your comment. It has been approved by my supervisor, and once we have it in a form which meets with your approval,we will finalize it. Thank you for your help. Regards, David Goodrich NC Water Resources Division fr 422efr s-�w43/17s/ 1 Goodrich, David From: Rip Ford <rford@daa.com> Sent: Friday, November 22, 2013 1:04 PM To: Goodrich, David Subject OCSWM Permit WI0500293 (LNF 02) Attachments: DAA to NCDENR(2013 11 22) OCSWM North - injection permit(questions).pdf Hi, David. I am sort of confused about a couple of passages in the DRAFT Permit. I have attached my questions, along with the parts of the Permit to which I refer. Thank you. R Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [maiito:david.goodrich@ncdenr.gov] Sent: Friday, November 22,2013 7:32 AM To: Rip Ford Subject: RE-OCSWM Permit WI0500293 (LNF 01) Hi Rip, I do not know of any other facilities which are doing this, but the supervisor of our injection program,Tom Slusser at (919) 807-6412 may know of others. I would recommend contacting him, as he has dealt with many dozens of injection projects throughout the state. Regards, David From: Rip Ford [mailto:rfordCa�daa.com] • Sent: Thursday, November 21, 2013 7:57 PM To: Goodrich, David Subject: OCSWM Permit WI0500293 (LNF 01) Thank you, David. By the way, I have been meaning to ask you ... do you know of any other facilities that are injecting oxidants into the groundwater, to deal with VOCs? Something other than a permanganate would certainly remove the manganese issue; however, I believe that any oxidant strong enough to break down the chlorinated VOCs would also be strong enough to push certain metals (such as chromium) into a more soluble state. i . November 22, 2013 Orange County Solid Waste Management North Sanitary Landfill NCDENR.Injection Permit WI0500293 Questions. Question "a"(Part II/item.1) When you refer to the "two semi-annual GW sampling events," do you mean "the first semi-annual groundwater sampling events to take place following the date.on which the subject permit is issued"? For exariiple, if this permit,is issued on December 1, 2013, as planned, then the first two•such events will be May, 2014 and November,2014. Is that interpretation correct? Do you want to insert that clarification into.the Permit? Question "b" (also Part II/item 1) When you refer to the "two semi-annual GW sampling events," for what parameters shall the groundwater samples be analyzed during those events? Just the usual Appendix II parameters (May, 2014)and Appendix I parameters (November, 2014)? Or should those events also include the various indicator:parameters and byproducts listed in Part VII, item 1 (for the wells specifically listed in Part VII, item.1?) Question "c" (Part VII/ item 1) The quarterly monitoring effort described hi this section pertains to the. quarterly monitoring that is conducted after injection has occurred, correct? But what if, after the first two semi-annual_events (per Part II), we do NOT inject? Do we still move into this quarterly monitoring_program? PART I-WELL CONSTRUCTION GENERAL CONDITIONS DR AF I. The Permittee must comply with all conditions of this permit and'with the standards and criteria specified in Criteria and Standards Applicable to Injection Wells (15A NCAC 2C .020,0). Any noncompliance with conditions, of this permit constitutes a violation of the North Carolina Well Construction Act and"is grounds for enforcement action as provided for in N.C.G.S. 87-94. 2, This permit shall become voidable unless the facility is constructed in accordance with the conditions.of this permit,the approved plans and specifications, and other supporting data. 3. This permit is valid only for construction of the number of injection wells described in the application and other supporting data. Construction of additional injection wells must be approved in advance by the Water Quality Regional Operations Section. 4: Each injection well shall not hydraulically connect separate aquifers. 5. Each injection well shall be constructed in such a manner that water from land surface cannot migrate into the gravel pack or well screen. 6. Each injection well shall be secured to reasonably insure against unauthorized access and use. Each well shall be permanently labeled with a warning that it is for injection purposes. and the entrance to'each well roust be secured with a locking dap. 7. Each injection well shall be afforded reasonable protection against damage during construction and use. 6.ater rr t 8. Each injection well shall have permanently affixed an identification plate L PART II- OPERATION AND USE GENERAL CONDITIONS • t.; °Priot tof erormin rn ection activit a minimum of two semi;annual,gioundwater::sampl ig J p g J . Y> events shallLbe performed at the site, and the+results and concen ra ion trends documented in '!lie form of a short report summarizing the results and trends The report shall be submitted to .the Central Office ;and the; Raleigh Regional Office of the iWater Quality Regional Operations-Section to determine if.i jection activity°can- be authorized `Sarripling`::levels of metals must return to baseline conditions of.-the°original permit issued in•December of 2010 before injections,can commence. 2. This permit is effective only with-respect tothe nature, volume of materials,rate of injection, and number of injection wells as described in the application-and:other supporting data.. 3. This permit is not transferable without prior notice to, and approval by, the Director of the :Division of Water Resources (Director). In the event there is a desire for the facility to change:ownership, or there is a name change of the Permittee, a formal permit amendment. request must be submitted to the Director,. including any:supporting materials as may' be appropriate, at least 30 days prior to the date of the change. 4. The issuance of this permit shall not relieve the Permittee of the responsibility of complying, with any and all statutes, rules, regulations, or ordinances that may be imposed by other Permit No. W10500293 PAGE 2 OF 7 ver. 10/16/2013 UIC-5I15T pat. it , DRAFT -4iiP PART VII-MONITORING AND REPORTING REQUIREMENTS 1.. The:proposed monitoring plan,revised`and subrriittecl on December 16, 2010'for thepriginal application,.shall'die followed This consists of monitoring wells.MW 1-5, MW 16,MW 17 MW 20, NIW 21d, 'MVO 21s,--MW 22, MW 23, and' MW-24:1' for Volatile - Organic Com• pounds, Carbon Dio'`de, ond, Chromium, Mercury,t ,ari e �o ass ni pll Ctemperature specificc_onduetazice, I]isso1_v_ecl&Oxygen;=Turbidityy l ar[d ORP on, a quarterly-- (4x/year) schedule.)the•-sampling schedu e wi .egin a _'er t i e two semiannua samping events_required under Permit' Coz dition- -II 1 `:have'been- performed: Any additional monitoring, including groundwater, surface:watet,or:soil.sampling, deemed necessary bythe Division of NWater:Resources to`ensure surface water and groundwater protection:may.,be established slid an acceptable-sapling reporting schedule shall be followed: 2., All sample, results shall be submitted to the Water Quality Regional Operations Section's Raleigh Regional Office and the Raleigh Central Office quarterly. Monitoring reports shall include, at-a minimum, analytical data and an update on the status and location Of monitoring and injection wells. Well locations.may be given in. a table with:the.name and geographic coordinates or shown on an updated version of the.surveyor's base,map. • 3. Within 30 days of completion of well construction, a complete Well Construction Record (Form GW-I.)shall be submitted to the addresses specified,in Part VII.6.below. 4. The Perinittee:shall submit an Injection Event Record within 30 days of completing each inj ectioii. 5. The Permittee shall submit a final project evaluation within 9 months after completing all injection-related activity associated with this permit, or produce an interim; evaluation to be submitted-with a renewal application for this permit. Both the final project evaluation and, interim evaluation shall contain historical monitoring data and updated contaminant plume and potentiometric surface maps.PLEASE NOTE:,;Injectants and.related least Qn byproducts must attenuate to pre-injection:concentrations orgroundwater=standards specified.m ule'`15A NCAC-02C`T:.0202;7whicheverls-greateri in orde%for thispermit to.be=closed. Otherwise, corrective action as described Part IX shall be required. 6. All monitoring results, forms, and reports required in this Part shall be submitted to: UIC Program Staff DWR-WQROS DWR WQROS and Raleigh Regional Office 1636 Mail Service Center 3800 Barrett Drive Raleigh;NC 27699-1636 Raleigh,NC 27609 7. The Permittee shall report by telephone,,within 48 hours of the occurrence or first knowledge of the occurrence, to the Raleigh Regional Office, telephone number (919) 791-4200, any of the following:. (A)Any occurrence at: the injection facility which results in any unusual operating circumstances; Pennit.No. W10500293 PAGE 4 OF 7 ver. 10/16/2013 UIC-5I/5T Goodrich, David From: Goodrich, David Sent: Tuesday, November 26, 2013 7:47 AM To: 'Rip Ford' Subject: RE:OCSWM Permit WI0500293 (LNF 02) Attachments: WI0500293dp131115.docx Hi Rip, Thank you for your email. In response to your questions, I have revised the draft permit to add some clarification to it and am attaching it herewith. In short,our response to Question "a" is that your interpretation is correct. In response to Question "b",we only need the parameters listed in Permit Condition VII.1. In response to Question "c",the quarterly monitoring only begins after injection activities commence. Please comment on my revisions. Thank you. David From: Rip Ford fmailto:rfordtaldaa.com] Sent: Friday, November 22,2013 1:04 PM To: Goodrich, David Subject: OCSWM Permit WI0500293 (LNF 02) Hir-David. I am sort of confused about a couple of passages in the DRAFT Permit. I have attached my questions, along with the parts of the Permit to which I refer. Thank you. R Leonard"Rip" Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich@ncdenr.gov] Sent: Friday, November 22, 2013 7:32 AM To: Rip Ford • Subject: RE: OCSWM Permit W10500293 (LNF 01) Hi Rip, I do not know of any other facilities which are doing this, but the supervisor of our injection program,Tom Slusser at (919) 807-6412 may know of others. I would recommend contacting him, as he has dealt with many dozens of injection projects throughout the state. - PART I-WELL CONSTRUCTION GENERAL CONDITIONS 1. The Permittee must comply with all conditions of this permit and with the standards and criteria specified in Criteria and Standards Applicable to Injection Wells (15A NCAC 2C .0200). Any noncompliance with conditions of this permit constitutes a violation of the North Carolina Well Construction Act and is grounds for enforcement action as provided for in N.C.G.S. 87-94. 2. This permit shall become voidable unless the facility is constructed in accordance with the conditions of this permit,the approved plans and specifications, and other supporting data. 3. This permit is valid only for construction of the number of injection wells described in the application and other supporting data. Construction of additional injection wells must be approved in advance by the Water Quality Regional Operations Section. 4. Each injection well shall not hydraulically connect separate aquifers. 5. Each injection well shall be constructed in such a manner that water from land surface cannot migrate into the gravel pack or well screen. - 6. Each injection well shall be secured to reasonably insure against unauthorized access and use. Each well shall be permanently labeled with a warning that it is for injection purposes and the entrance to each well must be secured with a locking cap. 7. Each injection well shall be afforded reasonable protection against damage during construction and use. 8. Each injection well shall have permanently affixed an identification plate. PART II - OPERATION AND USE GENERAL CONDITIONS =I. Prior to_ performing injection activity, a minimum oftwoWsemi-annual groundwater sampling events shall be performed at the site for the parameters listed in Permit Condition VII.I., and the results and concentration trends documented in the form of a short report summarizing the results and trends. The first-of these pre-injection sampling events will be performed six (6) months after the permit is issued The report shall be;submitted to the Central Office and the Raleigh Regional Office of the Water Quality Regional Operations Section to determine if injection activity can be authorized. Sampling levels of metals must return .to baseline conditions of °theoriginaLpermit, issued in December: of 2010 before injections can !commence: 2. This permit is effective only with respect to the nature, volume of materials, rate of injection, and number of injection wells as described in the application and other supporting data. 3. This permit is not transferable without prior notice to, and approval by, the Director of the Division of Water Resources (Director). In the event there is a desire for the facility to change ownership, or there is a name change of the Permittee, a formal permit amendment request must be submitted to the Director, including any supporting materials as may be appropriate, at least 30 days prior to the date of the change. Permit No.WI0500293 PAGE 2 OF 7 ver. 10/16/2013 UIC-51151' S , 3. Provisions shall be made for collecting any necessary and appropriate samples associated with the injection facility activities. PART VII-MONITORING AND REPORTING REQUIREMENTS I. The proposed monitoring plan,revised and submitted on December 16, 2010 for the original application,`shall.be followed. This consists of monitoring wells MW 15, MW-°16, MW 17 MW-20, MW-21d, MW-21s, ' MW-22, MW-23, and: MW-24: for Volatile Organic ' p , e, Chromium, Mercury, Manganese, Potassium, pH p_ tem erature, specific conductDd anceoDs solved Oxygen, :Turbidity, and- ORP on a quarterly '(4x/year) schedule. The quarterly sampling' schedule will begin after the two .semiannual sampling events required under Permit Condition 11 1 have been performed, and, after the injection activities begin. Any additional morutonni including groundwater, surface water, or soil sampling, deemed necessary by the Divisioni of Water Resources-to ensure surface water and groundwater protection`may be established'and an acceptable sampling reporting schedule shall be followed 2. All sample results shall be submitted to the Water Quality Regional Operations Section's Raleigh Regional Office and the Raleigh Central Office quarterly. Monitoring reports shall include, at a minimum, analytical data and an update on the status and location of monitoring and injection wells. Well locations may be given in a table with the name and geographic coordinates or shown on an updated version of the surveyor's base map. 3. Within 30 days of completion of well construction, a complete Well Construction Record (Form GW-1) shall be submitted to the addresses specified in Part VII.6 below. 4. The Permittee shall submit an Injection Event Record within 30 days of completing each injection. 5. The Permittee shall submit a final project evaluation within 9 months after completing all injection-related activity associated with this permit, or produce an interim evaluation to be submitted with a renewal application for this permit. Both the final project evaluation and interim evaluation shall contain historical monitoring data and updated contaminant plume and potentiometric surface maps. PLEASE NOTE: Injectants and related reaction byproducts must attenuate to pre-injection concentrations or groundwater standards specified in rule 15A NCAC 02C .0202, whichever is greater, in order for this permit to be closed. Otherwise, corrective action as described Part IX shall be required. 6. All monitoring results, forms, and reports required in this Part shall be submitted to: UIC Program Staff DWR- WQROS DWR—WQROS and Raleigh Regional Office 1636 Mail Service Center 3800 Barrett Drive Raleigh,NC 27699-1636 Raleigh,NC 27609 7. The Permittee shall report by telephone, within 48 hours of the occurrence or first knowledge of the occurrence, to the Raleigh Regional Office, telephone number (919) 791-4200, any of the following: Permit No.WI0500293 PAGE 4 OF 7 ver. 10/16/2013 UIC-51/5T Goodrich, David From: Goodrich, David Sent: Wednesday, December 04,2013 2:46 PM To: 'Rip Ford' Subject: RE: OCSWM Permit WI0500293 (LNF 02) Hi Rip, We are getting ready to finalize the permit. Please let me know of any more changes or concerns you may have at your earliest convenience. Thank you. Regards, David From: Rip Ford [maiito:rford(adaa.comj Sent: Tuesday, November 26, 2013 8:44 PM To: Goodrich, David Subject: RE: OCSWM Permit WI0500293 (LNF 02) Thanks, David. I hope to get to this tomorrow (Wed). Regards, Rip Leonard "Rip"Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich(ancdenr.gov] Sent: Tuesday, November 26, 2013 7:47 AM To: Rip Ford Subject: RE: OCSWM Permit WI0500293 (LNF 02) Hi Rip, Thank you for your email. In response to your questions, I have revised the draft permit to add some clarification to it and am attaching it herewith. In short, our response to Question "a" is that your interpretation is correct. In response to Question "b",we only need the parameters listed in Permit Condition VII.1. In response to Question "c",the quarterly monitoring only begins after injection activities commence. Please comment on my revisions. Thank you. Goodrich, David From: Rip Ford <rford@daa.com> Sent: Wednesday, December 04, 2013 3:11 PM To: Goodrich, David Subject: RE:OCSWM Permit WI0500293 (LNF 02) Thanks, David. PS — It looks good to me, as is. I just want somebody from OCSWM to concur. • Regards, Rip Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering From: Goodrich, David [mailto:david.goodrich@ncdenr.gov] - Sent: Wednesday, December 04, 2013 2:50 PM To: Rip Ford Subject: RE: OCSWM Permit WI0500293 (LNF 02) Hi Rip, That will be fine. I will look forward to hearing from you tomorrow. Thanks! David From: Rip Ford [mailto:rfordC&daa.com] Sent: Wednesday, December 04, 2013 2:49 PM To: Goodrich, David Subject: RE: OCSWM Permit WI0500293 (LNF 02) Hi, David. Can you give me until the end of today, to be sure? And I have not heard back from OCSWM yet ... need to catch up with them. The permit is probably just fine now, but I could use just a bit more time. What do you think? Thanks. Leonard"Rip" Ford (PhD,PG) 1 Goodrich, David From: Rip Ford <rford@daa.com> Sent: Wednesday, December 04, 2013 4:14 PM To: Goodrich, David Subject: Hi David -just talked with OCSWM -they are okay with the new version of the injection permit-thank you ! (eom) Leonard"Rip"Ford (PhD,PG) Environmental Science and Engineering Draper Aden Associates Engineering•Surveying•Environmental Services Lasting Positive Impact office 804.264.2228 www.daa.com Virginia Commonwealth University Center for Environmental Studies www.vcu.edu 1 ti - NCDENR NCDENR 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 August 9, 2013 Ms. Gayle Wilson—Director Orange County Solid Waste Management PO Box 17177 Chapel Hill,NC 27516 Subject: Acknowledgement of Application No. W10500293 Orange County Landfill North Facility Injection In Situ Groundwater Remediation Well System Orange County Dear Ms. Wilson: The Aquifer Protection Section acknowledges receipt of your permit application and supporting documentation received on August 7, 2013. Your application package has been assigned the number listed above,and the primary reviewer is David Goodrich. Central and Raleigh Regional Office staff will perform a detailed review of the provided application, and may contact you with a request for additional information. To ensure maximum efficiency in processing permit applications, the Aquifer Protection Section requests your assistance in providing a timely and complete response to any additional information requests. Please note that processing standard review permit applications may take as long as 60 to 90 days,. after receipt o a complete application. If you have any questions, please contact David Goodrich at(919) 807-6352 or david.goodrich@ncdenr.gov. ,��Siinccerely, 6CJ for Debra J. Watts Groundwater Protection Unit Supervisor cc: Raleigh Regional Office,Aquifer Protection Section Joel C. Daniel,PG—Draper Aden Associates, 8090 Villa Park Drive,Richmond,VA 23228 Permit File WI0500293 AQUIFER PROTECTION SECTION 1636 Mail Service Center,Raleigh,North Carolina 27699-1636 Location:512 N.Salisbury St.,Raleigh,North Carolina 27604 One Phone:919-807-64641 FAX:919-607-6496 NorthCarolina Internet:htto:/lpORatnadenr.orgiwebtwo/aos Naturally An Equal opportunity 1 Affirmative Action Employer " `DRAPER ADEN ASSOCIATES ',LETTER OF TRANSMJ[TTAL, Consulting Engineers DATE: JOB NO: 8090 Villa Park Drive 08-05-13 R00592 Richmond,Virginia 23228 ATTENTION: Mr.Thomas Slusser Phone(804)264-2228 Fax(804)264-8773 RE: Orange County Landfill- TO - North Facility NCDENR-DWQ Groundwater Monitoring Program 1636 Mail Service Center Raleigh,North Carolina 27699-1636 WE ARE SENDING YOU: COPIES DATE NO. DESCRIPTION 2 08-2013 Orange County Landfill—North Facility Underground Injection Permit Renewal THESE ARE TRANSMITTED: For approval Approved as submitted Resubmit copies for approval El For your use Approved as noted Submit copies for distribution As requested Returned for corrections Return corrected prints For review and comment RECEIVEDIDENPIDWO REMARKS: Aquifer PIOlettOWSeCUOn COPY TO: FILE SIGNED: �� � a DOCUMENTATION ASSOCIATED WITH THE ORIGINAL INJECTION PERMIT ISSUED ON DECEMBER 23, 2010 1 _ VAC*ENR e' North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary • December 20, 2010 Gayle Wilson,Director Orange County Solid Waste Management P.O.Box 17177 Chapel Hill,NC 27516 Ref: Issuance of Injection Permit WI0500293 Orange County Landfill -North - Chapel Hill, Orange County,North Carolina. • Dear Director Wilson: • In accordance with the application received on September 23, 2010, and the supporting data received December 14-16, 2010, we are forwarding permit number W10500293. This permit is to inject potassium permanganate to remediate groundwater contami ated with chlorinated solvents at the facility referenced above. This permit shall be effective from the date of issuance until November 30, 2013, and shall be subject to the conditions and limitations stated therein, including the requirement to submit a final project evaluation as stated in PART VII — MONITORING AND REPORTING REQUIREMENTS. Please note the well construction special condition in Part 11.2 to make sure the injection wells are protected from flooding. Be sure to read the entire permit to ensure that you are aware of all compliance requirements. You will need to notify this office by telephone 48 hours prior to initiation of operation of the facility. In order to continue uninterrupted legal use of the injection facility for the stated purpose, you must submit an application to renew the permit 120 days prior to its expiration date. Please contact me at 919-715-6164 or Thomas.Slusserrncdenr.gov if you have any questions about your permit. • Best Regards, Thomas Slusser,L.G. Program Manager Underground Injection Control Program cc: Jay Zimmerman,Raleigh Regional Office Joel Daniel,Draper Aden Assoc.,8090 Villa Park Dr.,•Richmond,VA 23228 Ervin Lane,Division of Waste Management . • WI0500293 Permit File AQUIFER PROTECTION SECTION 1636 Mail Service Center,Raleigh,North Carolina 27699-1636 Location:2728 Capital Boulevard,Raleigh,North Carolina 27604 One Phone:919-733 3221 1 FAX 1:919-715-0588;FAX 2:919-715.60481 Customer Service:1-877-623-6748 North pj- Carolina Internet:www.newateroualitv.orq Alaturally An Equal Opportunstyl Affirmative Action Employer Slusser, Thomas From: Slusser,Thomas Sent: Friday, December 17, 2010 6:15 PM To: 'Joel Daniel' Subject: RE: permanganate Hi Joel, 1 don't think that concrete pads would do too much because 1 think that water could get underneath them. I will write the permit to include a special well construction requirement that the wells are to be relocated or otherwise constructed with sufficient stickup to elevate the wellhead above the estimated 100-year flood elevation. To the reporting section, 1 will add a requirement for the submittal of an updated site map showing the as-built locations of the injection wells. I think that should address everything. Take care, —Thomas. E-mail correspondence to and from this address may be subject to the North Garoiina Public ilecords law sad may be disclosed to third parties. From: Joel Daniel f mailto:JDaniel(&daa.coml Sent: Wednesday, December 15, 2010 11:18 AM To: Slusser,Thomas Subject: RE: permanganate Thomas, OK...we will proceed with changing permanganate type. As for INJ-A and 1NJ-B, I think we can plan to install-an extra thick bentonite seals in them. Section C.6 of the application shows the anticipated grouting intervals for the injection wells, and we could trade some of the grout for more bentonite for these two wells, if that would make things more acceptable. We want to make sure we put at least the minimum required amount of grout at the surface of the boreholes, as required by regulation. Do these injection wells need to have a concrete pad? I think Eric and I were discussing during the site visit, and I thought he said they would not need this....but would having pads help with decreasing the potential for flood waters entering the ground around the well casing? -Joel From: Slusser, Thomas fmailto:thomas.slusser©ncdenr.govl Sent: Wednesday, December 15, 2010 11:07 AM To: Joel Daniel Subject: RE: permanganate Hi Joel, No problem switching permanganate types. I got your email about the FEMA map. I think that an appropriate amount of stickup would be fine, but I will have to check with my supervisor to see if this is something for which we would want to issue a variance via the permit. The water-tight seal on the wellhead is one important aspect, but also the integrity of the grout seal in the event of a flooding event. A couple of alternatives are to move the well locations further away from the creek or to use direct-push points in the proposed locations of INJ-A& B;the latter option would eliminate the potential flooding issue but would be an ongoing setup/logistics issue. Anyway, something to think about. • Take care, 1 Thomas. E-mail correspondence to and from this address may be subject to the North Carolina Public Records law and may he disclosed to third parties From: Joel Daniel f mailto:JDaniel(adaa.coml Sent: Wednesday, December 15, 2010 10:55 AM To: Slusser, Thomas Subject: permanganate Thomas, After discussing the permanganate issue with some other people in our office, I am thinking we may want to use potassium permanganate instead of sodium permanganate at Orange County landfill. This is mainly from a.safety and handling perspective; sodium P is shipped as a liquid, and potassium P is a granular solid, I am going to include this change in the revised Application (and attachments where referenced), unless you see a problem with this change. I will send individual PDF files of the Application and whatever attachments I have revised, as we discussed. Thanks, Joel Joel C. Daniel, P.G. Draper Aden Associates 8090 Villa Park Drive -Richmond, VA. 23228 Phone: (804) 264-2228 Fax: (804) 264-8773 • • Slusser, Thomas From: Joel Daniel EJDaniel@daa.com] Sent: Thursday, December 16, 2010 4:21 PM To: Slusser, Thomas Subject: Revised UIC Application Attachments: UIC Application -revised 12-15-10.pdf; U1C ATTACHMENT C -revised 12-15-10.pdf; UIC ATTACHMENT D revised 12-15-10.pdf; UIC ATTACHMENT E-revised 12-15-10.pdf; UIC ATTACHMENT F revised 12-15-10.pdf; FIGURE 3- POTENTIOMETRIC SURFACE MAP- revised 12-15-10.pdf; FIGURE 4-TOTAL VOC MAP-revised 12-15-10.pdf Hello Thomas, • 1 have attached PDF files of the following revised documents: - UIC Application - Attachment C - Attachment D - Attachment E - Attachment F - Figure 3 - Figure 4 I will send two more figures in a separate email. The other attachments/figures that did not require changes based on our discussion have not been included. I will have to prepare a revised well construction schematic upon my return from vacation next Thursday. Thank you, Joel Joel C. Daniel, P.G. Draper Aden Associates 8090 Villa Park Drive Richmond,VA. 23228 Phone: (804) 264-2228 Fax: (804) 264-8773 Slusser, Thomas From: Joel Daniel [JDaniel@daa.com] Sent: Tuesday, December 14, 2010 6:03 PM To: Slusser, Thomas Cc: mmeagher@co.orange.nc.us Subject: UIC application for 68-01 Attachments: FEMA map.pdf Thomas, Attached is part of a FEMA flood map and legend for the proposed injection well area. The map doesn't cover the actual locations of the proposed injection wells, but you can probably extrapolate from the western extent of the flood zone shown. Basically, the locations of proposed injection wells INJ-A and INJ-B appear to be located in the"blue dot" area (Zone AE), which is the hazard area for a 1% chance of flooding (i.e. the"100-year flood"). Proposed injection wells INJ-C and INJ-D do not appear to be at risk of any appreciable flooding. The map shows the Base Flood Elevations for Zone AE, and the elevation of 476 shown at the western end of the mapped area is about 1.3 feet higher than the ground surface(474.7 ft)at MW-21 S/MW-21 D. • The Zone X("black dot") area has the 0.2% (i.e. the "500-year flood")chance of flooding. Basically, this seems to indicate that the injection wells could be constructed, but would have to have stickups of at least 3 . feet,just to be safe. We could go up to 5 feet if necessary, if that meant we could have a"variance"from the regulation for constructing injection wells in this area. • Anyway....I will let you digest this part, and send the other information we discussed in a separate email. Thanks, Joel Joel C. Daniel, P.G. Draper Aden Associates _ 8090 Villa Park Drive - Richmond, VA. 23228 Phone: (804) 264-2228 Fax: (804) 264-8773 i 4 NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary October 5,2010 Gayle Wilson,Director Orange County Solid Waste Management PO Box 17177 Chapel Hill.NC 27516 Subject: Acknowledgement of Application No. WI0500293 Orange County Landfill(North Facility) Injection In situ Groundwater Remediation Well (5I) Orange Dear Gayle: The Aquifer Protection Section of the Division of Water Quality(Division)acknowledges receipt of your permit application and supporting materials on September 23,2010.This application package has been assigned the number listed above and will be reviewed by Thomas Slusser. The reviewer will perform a detailed review and contact you with a request for additional information if necessary.To ensure the maximum efficiency in processing permit applications,the Division requests your assistance in providing a timely and complete • response to any additional information requests. Please be aware that the Division's Regional Office,copied below,must provide recommendations prior to final action by the Division. Please also note at this time,processing permit applications can take as long as 60-90 days after receipt of a complete application. If you have any questions,please contact Thomas Slusser at 919-715-6629,or via e-mail at thomas.slusser@ncdenr.gov. If the reviewer is unavailable,you may leave a message,and they will respond promptly. PLEASE REFER TO THE ABOVE APPLICATION NUMBER WHEN MAKING INQUIRIES ON THIS PROJECT. Sincerely, CA-jztot. & 3XflJ ... for Debra J.Watts Supervisor cc: Raleigh Regional Office,Aquifer Protection Section Draper Aden Associates(Joel Daniel,P.G.) 8090 Villa Park Drive,Richmond,VA 23228 Permit Application File W10500293 AQUIFER PROTECTION SECTION 1636 Mail Service Center.Ralergn,North Canine 27699-1636 Location.2728 Capital Boulevard.Raleigh.North Canine 27604 One Phone 919.733-3221 FAX 1:919-715-0588:FAX 2:919-715-6048 I Customer Service:1-877-623-o748 NOrthCarolin' Internet:www.ncwatercivalitv.ong Naturally en Equ.n Oppnrrunrty;ethrni ve Acn,cn Employer Goodrich, David From: Goodrich, David Sent: Friday, October 25, 2013 8:25 AM To: Rice, Eric Subject: OCSWM WI0500293 Permit Draft Attachments: WI0500293dp131115.docx;WI0500293dpTranslet130830.docx Eric, Pursuant to our conversations yesterday, I am attaching a draft of the permit and cover letter herewith for your comments/edits. After receiving your comments, I plan to implement the changes and obtain comments from Debra. I will then make whatever changes are appropriate and send the draft to the consultant, who will share it with the permittee and get back to us. Thank you for your help with this. David 1 r Goodrich, David From: Rice, Eric Sent: Wednesday, October 30, 2013 10:10 AM To: Goodrich, David Subject: RE: OCSWM WI0500293 Permit Draft David: RRO recommends that the additional two rounds of groundwater sampling data is a bi annual schedule collection.So one round then another six months later.The new data and historical data can be analyzed for trends in groundwater concentrations over time.Also,we recommend that Chromium is added to the groundwater monitoring requirements. It appears it may be trending up in concentration as well following the injection events. Let me know if anything needs to be clarified.Thanks David. Eric Email correspondence to and from this address may be subject to the North Carolina Public Records law and may be disclosed to third patties From: Goodrich, David Sent: Friday, October 25, 2013 8:25 AM To: Rice, Eric Subject: OCSWM WI0500293 Permit Draft Eric, Pursuant to our conversations yesterday, I am attaching a draft of the permit and cover letter herewith for your comments/edits.After receiving your comments, I plan to implement the changes and obtain comments from Debra. I will then make whatever changes are appropriate and send the draft to the consultant,who will share it with the permittee and get back to us. Thank you for your help with this. David 1 ya Goodrich, David From: Rice, Eric Sent: Friday, November 15, 2013 5:01 PM To: Goodrich, David Subject: RE: OCSWM WI0500293 Permit Draft David: No correspondence from the board as yet. Those changes/additional language look good to me. I think you can send that version out. Hope you have or had a good weekend. Eric Email correspondence to and from this address may be subject to the North Carolina Public Records law and may be disclosed to third parties From: Goodrich, David Sent: Friday, November 15, 2013 11:05 AM To: Rice, Eric Subject: RE: OCSWM W10500293 Permit Draft Eric, Any news yet from the Licensing Board? I have made the changes you recommended, and we have made some changes to the draft permit and cover letter that we would like you to comment on. • I am attaching the draft permit and cover letter herewith, and have highlighted the changes of interest in yellow. Thank you for your help! David From: Rice, Eric Sent: Wednesday, October 30, 2013 10:10 AM To: Goodrich, David Subject: RE: OCSWM W10500293 Permit Draft David: RRO recommends that the additional two rounds of groundwater sampling data is a bi annual schedule collection. So one round then another six months later.The new data and historical data can be analyzed for trends in groundwater concentrations over time.Also,we recommend that Chromium is added to the groundwater monitoring requirements. It appears it may be trending up in concentration as well following the injection events. Let me know if anything needs to be clarified.Thanks David. 1 Accw, A NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder John E. Skvarla, Ill Governor Director Secretary August 26, 2013 Memorandum RECEAUGIVEDIDE27 2013NR�DWQ To: David Goodrich AquiferProtect&Sec o� Land Application Unit, Central Office From: Eric Rice Aquifer Protection Section, Raleigh Regional Office Through: Rick Bolich, Regional Supervisor Aquifer Protection Section, Raleigh eliqonal Office Subject: UIC (5I) Permit (Renewal) Orange County Landfill 1514 Eubanks Road Chapel Hill,N.C.-Orange County Permit# WI0500293 Enclosed is the regional staff report regarding the submittal of a permit application (renewal) for the continued injection of sodium permanganate at the Orange County Landfill site in Chapel Hill,N.C. The permit renewal is being requested in order to remediate the release of contaminants associated with the closed landfill. Please contact me at(919) 791-4242 if you have any questions about the report. cc: file Aquifer Protection Section 1628 Mail Service Center,Raleigh,North Carolina 27699-1628 Location:3800 Barrett Drive,Raleigh,North Carolina 27609 Phone:919-791-4200 FAX 919-571-4718 Internet:www.ncwaterouality.orq An Equal opportunity 1 Aihrmative Action Employer AQUIFER PROTECTION REGIONAL STAFF REPORT Date: August 26, 2013 County: Orange To: Aquifer Protection Central Office Permittee: Orange County Central Office Reviewer: David Goodrich Project Name: Orange County Landfill Regional Office Inspector: Eric Rice (RRO) #WI0500293 I. GENERAL INFORMATION I. This application is (check all that apply): ❑New ® Renewal ❑ Minor Modification ❑ Major Modification ❑ Surface Irrigation ❑ Reuse ❑ Recycle❑ High Rate Infiltration E Evaporation/Infiltration Lagoon ❑ Land Application of Residuals ❑Attachment B included ❑ 503 regulated ❑ 503 exempt ❑ Distribution of Residuals ❑ Surface Disposal ❑ Closed-loop Groundwater Remediation ® Other Injection Wells (including in situ remediation) Was a site visit conducted in order to prepare this report? ® Yes or❑ No. Description Of Well(S)And Facilities—New, Renewal, And Modification I. Type of injection system: RECEIVED1DENRIDWQ ❑ Heating/cooling water return flow(5A7) RGCE�VE���E�NY�Q ❑ Closed-loop heat pump system (5QM/5QW) AUG 2 7 2013 ®In situ remediation (5I) Aquifer Protection Section ❑ Closed-loop groundwater remediation effluent injection (5LP'Non-Discharge") ❑ Other(Specify: 2. Does system use same well for water source and injection? ❑ Yes ®No 3. Are there any potential pollution sources that may affect injection?❑ Yes ®No What is/are the pollution source(s)? What is the distance of the injection well(s)from the pollution source(s)? 4. What is the minimum distance of proposed injection wells from the property boundary? [nj-B is approximately forty feet from property line 5. Quality of drainage at site: ❑ Good ® Adequate ❑ Poor 6. Flooding potential of site: ❑ Low I1 Moderate ❑ High 7. For groundwater remediation systems, is the proposed and/or existing groundwater monitoring program (number of wells, frequency of monitoring, monitoring parameters,etc.) adequate? ❑ Yes ❑ No. Attach map of existing monitoring well network if applicable. If No, explain and recommend any changes to the groundwater monitoring program: N/A 8. Does the map presented represent the actual site (property lines, wells, surface drainage)?® Yes or❑ No. If no or no map, please attach a sketch of the site. Show property boundaries, buildings, wells,potential pollution sources, roads, approximate scale, and north arrow. FORM: Orange County Landfill WI0500293 (OR)2013 renewal 1 AQUIFER PROTECTION REGIONAL STAFF REPORT V. EVALUATION AND RECOMMENDATIONS Provide any additional narrative regarding your review of the application. Permit application is regarding the renewal for the continued injection of sodium permanganate to address chlorinated solvents and other VOCs in the groundwater originating from the north sanitary landfill which is a closed landfill. Four permanent injection wells were proposed to be installed for gravity feed of injectant. Two injections wells have been installed INJ-A and INJ- B.Application indicates three hundred and five gallons will be injected for eight separate injection events for a total of two thousand four hundred forty gallons. Current reported totals for injection indicate that nine hundred and seventy gallons had been injected to date. Original projected timeframe was indicated to be two and half years. Injection wells screen depths range from eight to sixty feet. The injection will focus on contaminants in the bedrock.Recommendations/requirements: A monitoring report on groundwater conditions was received on March 26, 2013. The report indicates that wells MW-21D, MW-24 and possibly MW-23, have elevated concentrations of Manganese when compared to the baseline conditions prior to injection. Manganese was detected as elevated as ten (10)times the 2L,groundwater standard in MW-21 D(546 ug/L).The 15A NCAC 2L .0202 groundwater standard for Manganese is fifty(50)parts per billion. The increase in the detected concentrations of manganese appear to coincide'with the permitted injections at the facility. Also, it appears that Mercury may have become elevated(in comparison tothe•bpoline data) in groundwater following the injection event. MW-21D tested positive for Mercury on September, 13,2012, at 7.8 ug/L.The 15A NCAC 2L .0202 ground water standard for Mercury is 1 ug/L. Historical data indicates that Mercury has been detected in the well as elevated as 3.6 ug/L. The concentration detected on 9-13-12 is over twice the highest previous detected concentration. Groundwater data collected from MW-23 also displays a significant increase in Mercury concentrations from the recorded historical levels in the well.The sample collected on 9-13-12 detected Mercury at 3.07 ug/L. Attach Well Construction Data Sheet- if needed information is available 1. Do you foresee any problems with issuance/renewal of this permit?® Yes ❑No. If yes, please explain briefly.The initial injection of the potassium permanganate appears to have resulted in elevated concentrations of manganese in groundwater which exceed the 2L groundwater standard and also Mercury may be elevated in groundwater in exceedence of the 2L standards as a result of the injections. 2. List any items that you would like APS Central Office to obtain through an additional information request. Make sure that you provide a reason for each item: Item Reason FORM: Orange County Landfill W10500293 (OR)2013 renewal 2 AQUIFER PROTECTION REGIONAL STAFF REPORT 3. List specific Permit conditions that you recommend to be removed from the permit when issued. Make sure that you provide a reason for each condition: Condition Reason 4. List specific special conditions or compliance schedules that you recommend to be included in the permit when issued. Make sure that you provide a reason for each special condition: Condition Reason 5. Recommendation: ❑ Hold, pending receipt and review of additional information by Central Office or regional office; ❑ Hold, pending review of draft permit by regional office; ❑ Issue upon receipt of needed additional information; ❑ Issue; ® Deny. If deny, please state reasons: It appears that elevated concentrations of constituents present in the groundwater above the 2L groundwater standards are correlated to the permitted injection event. Recommend permit renewal is denied under the previous set of.0200 rules(prior to May 1, 2012)under which this permit was granted. It is also recommended that the permittee explore other regulatory options in regards to permitted injection activities. 6. Signature of report preparer � s}: . Signature of APS regional supervisor: �� Date: f/e4e /61( 1^/14. /4.9& +4e f �e t li Attachments: � �cP�f al krd Wa I +46 cK to lG col a ll eit iv 1 G rep ioC , A- RECEIVEDIDENRIDWQ AUG 27 2013 -.)41-41; 1 Aquifer Protection Section FORM: Orange County Landfill W10500293 (OR)2013 renewal 3 Ca • ` AQUIFER PROTECTION SECTION APPLICATION REVIEW REQUEST FORM Date: August 9,2013 • (.>, 3//) To: ❑ Landon Davidson,ARO-APS ❑ David May, WaRO-APS ❑ Art Barnhardt, FRO-APS ❑ Morella Sanchez King, WiRO-APS ❑ Andrew Pitner, MRO-APS ❑ Sherri Knight, WSRO-APS X Rick BoIich, RRO-APS From: David Goodrich , Land Application Unit Telephone: (919) 807-6352 Fax: (919) 807-6496 E-Mail: david.goodrich(cncdenr.gov WT- A. Permit Number: W00500293 B. Owner: Orange County Solid Waste Management C. Facility/Operation: Orange County Landfill North Facility ❑ Proposed X Existing X Facility X Operation D. Application: 1. Permit Type: ❑ Animal ❑ Surface Irrigation ❑ Reuse ❑ H-R Infiltration ❑ Recycle ❑ I/E Lagoon X GW Remediation (ND)or5l Injection ❑ UIC -(5A7)open loop geothermal For Residuals: ❑ Land App. ❑ D&M ❑ Surface Disposal ❑ 503 ❑ 503 Exempt ❑ Animal 2. Project Type: ❑New ❑Major Mod. ❑ Minor Mod. X Renewal ❑Renewal w/Mod. E. Comments/Other Information: n I would like to accompany you on a site visit. Attached, you will find all information submitted in support of the above-referenced application for your review,comment, and/or action. Within 30 calendar days,please take the following actions: X Return a Completed APSARR Form. - Please comment ❑ Attach Well Construction Data Sheet. ❑ Attach Attachment B for Certification by the LAPCU. ❑ Issue an Attachment B Certification from the RO.* * Remember that you will be responsible for coordinating site visits and reviews, as well as additional information requests with other RO-APS representatives in order to prepare a complete Attachment B for certification. Refer to the RPP SOP for additional detail. When you receive this request form, please write your name and dates in the spaces below, make a copy of this sheet, and return it to the appropriate Central Office-Aquifer Protection Section contact person listed above. RO-APS Reviewer: Date: 7 2 /3 FORM: APSARR 07/06 Page 1 of I DOCUMENTATION ASSOCIATED WITH THE ORIGINAL INJECTION PERMIT ISSUED ON DECEMBER 23, 2010 NCDm North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dec Freeman Governor Director Secretary November 10, 2010 Memorandum - To: Thomas Slusser Groundwater Protection Unit, Central Office From: Eric Rice Aquifer Protection Section, Raleigh Regional Office Through: Jay Zimmerman, Regional Supervisor ` Aquifer Protection Section, Raleigh Regional Office Subject: UIC (51) Permit Orange County Landfill 1514 Eubanks Road Chapel Hill, N.C.-Orange County Permit # WI0500293 Enclosed is the regional staff report regarding the submittal of a permit application for the injection of sodium permanganate at the Orange County Landfill site in Chapel Hill, N.C. The permit is being requested in order to remediate the release of contaminants associated with the closed landfill. Please contact me at(919) 791-4242 if you have any questions about the inspection. cc: file Attachment: APRSR form Aquifer Protection Section 1628 Mail Service Center. Raleigh.North Carolina 27699-I628 One Location:3800 Garrett Dr..Raleigh.North Carolina 27609 NQ hCarolina Phone:919-791-4200 i FAX:919-571-9718 Customer Service I-877-623-6748 Internet:www.newaterqualitv.org ntltrallty An Equal[.lpportunity' Affinn alive.Action Einplo}cr i i� l� 1i AQUIFER _JTECTION REGIONAL STAFF REPORT • Date: November 10, 2010 County: Orange To: Aquifer Protection Central Office Permittee: Orange County Central Office Reviewer: Thomas Slusser Project Name: Orange County Landfill Regional Office Inspector: Eric Rice(RRO) #W10500293 L GENERAL INFORMATION 1. This application is(check all that apply): ®New ❑ Renewal ❑Minor Modification El Major Modification ❑ Surface Irrigation❑ Reuse❑ Recycle❑ High Rate Infiltration❑ Evaporation/Infiltration Lagoon ❑ Land Application of Residuals ❑Attachment B included ❑ 503 regulated ❑ 503 exempt ❑ Distribution of Residuals ❑ Surface Disposal El Closed-loop Groundwater Remediation ® Other Injection Wells (including in situ remediation) Was a site visit conducted in order to prepare this report? ® Yes or❑No. a. Date of site visit: November 2, 2010 b. Person contacted and contact information: Joel Daniel (Draper Arden Associates) c. Site visit conducted by: E.Rice d. Inspection Report Attached: ❑Yes or®No. 2. Is the following information entered into the BIMS record for this application correct? ❑ Yes or®No. If no,please complete the following or indicate that it is correct on the current application. • For Disposal and Injection Sites: (If multiple sites either indicate which sites the information applies to, copy and paste a new section into the document for each site, or attach additional pages for each site) a. Location(s): North of Chapel Hill b. Driving Directions: 40E to 86 exit.Right on Eubank Road. One mile on right c. USGS Quadrangle Map name and number: Chapel Hill D22NE d. Latitude: 35 58 15 Longitude: 79 04 37 to the nearest second IV. INJECTION WELL PERMIT APPLICATIONS(Complete these two sections for all systems that use injection wells, including closed-loop groundwater remediation effluent injection wells,in situ remediation injection wells,and heat pump injection wells.) Description Of Well(S)And Facilities--New,Renewal,And Modification `z) `'"'� 1. Type of injection system: ❑ Heating/cooIing water return flow(5A7) • ❑ Closed-loop heat pump system(5QM/5QW) (.) ` In situ remediation(5I) CD ❑ Closed-loop groundwater remediation effluent injection (5L/"Non-Discharge") FORM: Orange County LandfIl WI0500293(OR).doc • 1 AQUIFER En', JTECTION REGIONAL sTAFF REPORT ❑ Other(Specify: 2. Does system use same well for water source and injection? ❑ Yes ® No 3. Are there any potential pollution sources that may affect injection? ❑ Yes ® No What is/are the pollution source(s)? What is the distance of the injection well(s) from the pollution source(s)? 4. What is the minimum distance of proposed injection wells from the property boundary?Inj-B is approximately forty feet from property line 5. Quality of drainage at site: ❑ Good ® Adequate ❑ Poor 6. Flooding potential of site: ❑ Low ® Moderate ❑ High 7. For groundwater remediation systems,is the proposed and/or existing groundwater monitoring program (number of wells, frequency of monitoring, monitoring parameters, etc.) adequate? ❑ Yes ❑No. Attach - map of existing monitoring well network if applicable. If No, explain and recommend any changes to the groundwater monitoring program: N/A 8. Does the map presented represent the actual site (property lines,wells, surface drainage)? ® Yes or❑No. If no or no map,please attach a sketch of the site. Show property boundaries,buildings, wells,potential pollution sources, roads, approximate scale, and north arrow. V. EVALUATION AND RECOMMENDATIONS Provide any additional narrative regarding your review of the application. Permit application is regarding the injection of sodium permanganate to address chlorinated solvents in the groundwater originating from the north sanitary landfill which is a closed landfill.Four permanent injection wells will be installed to gravity feed injectant. Application indicates three hundred and five gallons will be injected for eight separate injection events. Injection wells screen depths range from eight to sixty feet.The injection will focus on contaminants in the bedrock. Groundwater seepage velocity was stated to be between one hundred twenty four ft/yr and five hundred ninety three ft/yr.The duration of the injection event is two years.Site Observations: Area is mostly made up of the landfill facility.The active landfill is located across the street from the closed landfill facility, so water supply wells do not appear to be an issue with the injection. Old field creek is the surface water feature located on the east side of the landfill.The injection wells will be located in the flood plain for Old Field Creek.The physical locations of the wells are as near as approximately thirty feet to the creek itself.The creek was noted to have water present the time of the inspection but very little flow was observed. A portion of the monitoring well network was inspected during the visit and was found to be in good condition.The wells inspected were noted to have dedicated pumps for groundwater sampling. It was stated that injection activities will start with wells Inj-A and Inj-C. If injection is considered a success in the first two wells,the other proposed wells (Inj-B and Inj-D) will not be installed. In light of this information and including the consultants input,its was implied that the injection wells A and C are to function as a pilot study.Recommendations/requirements: 1. Well Inj-B is located very near the property boundary as projected on the map in the application. At the time of the inspection the injection well location was moved back FORM: Orange County Landfill WI0500293 (OR).doc 2 AQUIFER FKOTECTION REGIONAL S-i-AFF REPORT away from the property boundary by about fifteen feet. It is necessary to request and updated map illustrating current proposed injection locations. 2.Injection volume percent concentration of injection not supplied. Request information. (ITRC document indicates aggressive reactions are possible when concentrations of sodium permanganate greater than 10% are mixed with incompatible materials-reductant solutions,hydrogen peroxide, petroleum compounds, glycol, etc.). 3.There is not a justification for the volume of injection in the current proposal besides data based on wells loading rate.This question was raised in the site inspection but a sufficient answer was not supplied. If a pilot study approach is to be employed then some additional information on how the permittee will proceed with this approach should be requested(volume of injectant and data analysis procedures)4. Injection wells will be located in the floodplain of Old Field Creek. The injection event should not be conducted during wet periods or threat of a rain event. 5. Monitoring parameters: Voc's, metals, carbon dioxide, chloride, and manganese. Field parameters: pH, ORP, conductivity and temperature 6.Well network: MW-1S, MW-16,MW-21S,MW-21D, and MW-23 7. Monitoring frequency: Once prior to injection, quarterly thereafter Attach Well Construction Data Sheet-if needed information is available 1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes ®No. If yes,please explain briefly. 2. List any items that you would like APS Central Office to obtain through an additional information request. Make sure that you provide a reason for each item: Item Reason Items 1,2, and 3 above Necessary 3. List specific Permit conditions that you recommend to be removed from the permit when issued. Make sure that you provide a reason for each condition: Condition Reason • 4. List specific special conditions or compliance schedules that you recommend to be included in the permit when issued. Make sure that you provide a reason for each special condition: Condition Reason Items 5 and 6 above Necessary FORM: Orange County Landfill WI0500293 (OR).doc 3 AQUIFER PROTECTION REGIONAL STAFF REPORT 5. Recommendation: ® Hold,pending receipt and review of additional information by Central Office or regional office; ❑ Hold, pending review of draft permit by regional office; ❑ Issue upon receipt of needed additional information; ❑ Issue; ❑ Deny. If deny,please state reasons: st ..... 6. Signature of report preparer(s): N Signature of APS regional supervisor: 9 i-ci `_.,.,.4.4-e— - Date: it//5/2-0,,,9 Attachments: FORM: Orange County Landfill WI0500293 (OR).doc 4 • • ,.•srArr... North Carolina Departrncnt o! I-1 •a:di • d 1;,; .a:i Scrviccs . �•I s Divisior i':st: ;t i- at . • - • % J:•ti 1330 St. Mary's Street•Post Office Box 29597 •Raleigh, North Carolina 27626-0597• Courier 56-20.11 James B.Hunt Jr.,Governor• H. David Bruton,M.D.,Secretary• Ann F. Wolfe,M.D.,M.P.H.,Director June 11, 1999 Ms. Sherri Knight f„ o Winston-Salem Regional Office 8025 North Point Boulevard, Suite 100 Winston-Salem,North Carolina 27106 . ./*/ Dear Ms. Knight:5 a r�•- �,u ` I am writin: in res.. . - to a re.nest from IT Co .oration of North Carolina, Inc., }a health risk evaluation regarding the use of, oxidizing agent manufactured by the Carus -- Chemical Company in an in-situ soil and groundwater rem-•iation project at the W. P. Ballard& Company site in Greensboro,North Carolina. Based upon my review of the information submitted, I offer the following health risk evaluation: WORKER PRECAUTIONS DURING APPLICATION 1. Some effects reported to be associated with the product proposed to be used are as follows: eye, skin, nose,throat, and lung irritation. If the product is released into the environment in a way that could result in suspension of fine solid or liquid particles (e.g., grinding, blending, vigorous shakii.j, or mixing),then proper personal protective equipment should be used. The application process should,be reviewed by an industrial hygienist to ensure that the most appropriate personal protective equipment is used. 2. Persons working with these products should wear goggles or a face shield, gloves, and protective clothing. Face and body protection should be used for anticipated splashes or sprays. 3. This product may cause spontaneous ignition with cloth or paper. Caution should be taken to prevent spills on clothes. Also, this product could react violently with most metal powders, ammonia, ammonia salts,phosphorus, finely divided organic compounds, flammable liquids acids, and sulfur. In addition, this product may become explosive if mixed with sulfuric acid, acetic acid, or acetic anhydride if not kept cold. 4. Eating, drinking, smoking,handling contact lenses, and applying cosmetics should not be permitted in the application area.during or immediately following application. 5. Safety controls should be in place to ensure that the check valve and the pressure delivery systems are working properly. 6. It is imperative that the Material Safety Data Sheets be followed to prevent incompatible or adverse reactions and injuries. r;) I , , . , NOr(!r(.eruhra.c Flog of rl.r 1515,9 5prrrll Olympics World S C.rrrrrl Page 1 of 1 • • 3 2 Evan Kane From: Luanne Williams ILuanne.Williams@ncmail.net] Sent: Thursday,April 04,2002 9:59 AM To: even kane Subject: potassium permanganate The precautions listed in the June 11, 1999 letter to Sherri Knight for sodium permanganate can be followed for potassium permanganate. There are many potential chemical interactions that could result in an explosion. This chemical is quite lethal to small children. I have attached the health effects and possible reactions for this chemical. Please share with those that will be applying or may come into contact with this chemical at the application site. • • • • 4/4/02 • Sherri Knight June 11, 1999 Page Two OTHER PRECAUTIONS , 1. Access to the area of application should be limited to the workers applying the product. In order to minimize exposure to unprotected individuals, measures should be taken to prevent access to the area of application. 2. According to the information submitted with the letter dated May 14, 1999, "A sensitive receptor survey was conducted by IT Corporation of North Carolina, Inc. in November 1998. Results of the survey indicate that neither private nor public potable water wells are present within a 1,500—foot radius of the subject site. The survey also confirmed that water from the City of Greensboro Water Resources is available within a 1,500—foot radius of the subject site. ...Water accounts were confirmed for all properties adjacent to both the W.P. Ballard and former Sears Greensboro Distribution Center Properties. The exception being 2820 Lawndale Avenue, which was verified as being currently unoccupied. A current water account is not in place....The approximate travel distance for the ...solution in groundwater from each application point is expected to be no greater-than 20 feet." According to the information submitted, the concentration in groundwater after injectionis estimated to approach 0% after several days to a week. Based on this information, it is unlikely that this solution would contaminate an existing water supply, however,measures should be taken to prevent contamination of existing or ' future wells that may be located near the application area. 3. According to the information submitted, the product is not expected to discharge to nearby surface water. The distance to the nearest surface water body was not provided. a Please do not hesitate to call me if you have any questions at(919) 715-6429. Sincerely, _ OtAANYL-Ci(lAjtatitini-4) Luanne K. Williams, Pharm.D.,Toxicologist Medical Evaluation and Risk Assessment Unit Occupational and Environmental Epidemiology Branch LKW:lp - cc: Mr.Mark Pritzl, Groundwater Section Ms.Melanie Wells, Guilford County Department of Health . Ms.Linda Blalock, Groundwater Section Mr. Bob Cheek, Groundwater Section M Keith Ogden, P.E., IT Corporation of North Carolina,Inc. INJECTION EVENT RECORD North Carolina Department of Environment and Natural Resources-Division of Water Quality Permit Number viT05OO A23 Were any wells abandoned during this injection I. Permit Information event? 0 WI - C-0 t Sal. Ylj /1I /T f ❑ Yes E. No Permi ee If yes, please provide the following information: Orcov Iauryly Land.(4 `1-Ne -i-h Number of Monitoring Wells Facility/Name Number of Injection Wells Facility Address Please include two copies of the GW-30 for each well abandoned. 2. Injection Contractor Information 4. Injectant Information Injectibn Contractor 1 Company Name Pa}A f) 71-7.4 j 41'74 Injectant Type Street Address g090 V, / f -i'4 DP; / gg I 1G /)') /3Llr /1�. 32 2 Concentration `G ��/ w��g / City State Zip Code If the injectant is diluted please indicate the source dilution fluid. ($62+ ) a4-Y- aaai Area code-Phone number Total Volume Injected /A a,4 1. 3. Well Information Volume Injected per well 7dfw/ - -�QD sd 7cs _r/l!,J C 3 Number of wells used for injection a 5. Injection History Well names rift Injection date(s)_ 3 f 01 d/// Were any new wells installed during this injection Injection number(e.g. 3 of 5) event? ❑ Yes jg No Is this the last injection at this site? ❑ Yes No If yes, please provide the following information: Number of Monitoring Wells I DO HEREBY CERTIFY THAT ALL THE INFORMATION ON THIS FORM IS CORRECT TO Number of Injection Wells THE BEST OF MY KNOWLEDGE AND THAT THE INJECTION WAS PERFORMED WITHIN THE Type of Well Installed (Check applicable type): STANDARDS LAID OUT N THE PERMIT. ❑ Bored ❑ Drilled ❑ Direct-Push e- LJc 9// // ❑ Hand-Au then(specify) SiCrNATURE OF INJECTION CONTRACTOR DATE Ple e include two copies ofform GW- each .JC1L1 C- well installed. PRINT NAME OF PERSON PERFORMING THE INJECTION Submit the original of this form to the Division of Water Quality within 30 days of injection. RECEIVED/D IU1C-I,ER Attn: UIC Program, 1636 Mail Service Center, Raleigh,NC 27699-1636,Phone No.919-733-3221 Aquifer Protectior Rev.0N09 APR 04 2116