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HomeMy WebLinkAboutWI0100353_Report_20160419oo SCS Engineers, P.C. Environmental Consultants 4041 Park Oaks Blvd. 813-621-0080 and Contractors Suite 100 FAX 813-623-6757 Tampa, Florida 33610 www.scsengineers.com April 19, 2016 File No. 09204072.14 Michael Rogers, P.G. UIC Program NC Division of Water Resources 1636 Mail Service Center Raleigh, NC 27699-1636 Subject: Buncombe County Monitor Natural Attenuation Fall 2015 Report Dear Michael: SCS Engineers, P.C. (SCS) is submitting the attached report for the latest round of groundwater sampling at the Old Buncombe County Landfill in hard copy as requested. Three rounds of semi- annual sampling for MNA parameters have been completed and are shown on Table 4. As we discussed in the June 8, 2015 Response to Comments of the UIC Permit Application, there is no major impact from the injectants observed in the sampling performed immediately after the injection event. The Spring Sampling event is being conducted this month and we expect to see the beginning effects of the extended release product at that time, but consistent with the previous HRC injection and sampling, it may be a year before effects are observed in the groundwater quality data. If you have any questions please feel free to contact us. Sincerely, 4rookFait, MPH eH Project Manager SCS ENGINEERS CAL. Enclosures r, -e� �±I' 1ArJ'- '�r C. Ed Hilton, Jr. P.E. Vice President SCS ENGINEERS RECEIVEMCDEOIDWR APR 2 5 2016 Water Qualitv Regional Operations Section wL 01003�3 41 a Old Buncombe County Landfill Permit No. 1 101 Fall 2015 Semi -Annual Monitoring and Monitored Natural Attenuation Sampling Report Presented to: Buncombe County Solid Waste Department 81 Panther Branch Road Alexander, North Carolina 28701 (828)250-5460 Presented by: SCS ENGINEERS, PC 4767 New Broad Street, Suite 222 Orlando, FL 32814 (407) 514-2766 RECEIVEDINCDEWWR February 1 1, 2016 File No. 09204072.14 Offices Nationwide www.scsengineers.co APR 2 5 2016 Water Quality Regional Operations Section Im L pENR I1SE0IL ❑Paper Report El Electronic Data -Email CD (data loaded Yes / No) DoGEvent # NC DENR I I Environmental Monitoring Division of Waste Management - Solid Waste Reportin Form Notice: This form and any information attached to it are "Public Records" as defined in N Std 21 .these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: APR 2 5 2016 • Prepare one form for each individually monitored unit • Please type or print legibly. Water Quality Regional • Attach a notification table with values that attain or exceed NC 2L groundwater Stan 01390128 S$ ter standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing condition, etc.). Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. • Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). • Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. soma waste monitoring Data Submittal Information - Name of entity submitting data (laboratory, consultant, facility owner): SCS Engineers, PC- Consultant; Pace Labs - Laboratory Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: C. Edward Hilton, Jr., P.E. Phone: 407-514-2766 E-mail: ehilton(cDscsengineers.com NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) Buncombe County Old Landfill (Closed) 2726 Riverview Road (Highway 251) 11-01 .1600 October 12-19, 2015 Environmental Status: (Check all that apply) ❑ Initial/Background Monitoring 0 Detection Monitoring >( Assessment monitoring ❑ Corrective Action (limited) ❑ i T e of data submitted: (Check all that apply) X Groundwater monitoring data from monitoring wells ❑ Methane gas monitoring data Groundwater monitoring data from private water supply wells 0 Corrective action data (specify) MNA Leachate monitoring data X Surface water monitoring data ❑ Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. BX Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. ❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample I values and explosive methane gas limits. I Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct Furthermore, 1 have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment C. Ed Hilton, Jr., P.E. Vice President 407-514-2766 Facility Represen ative Name (Print) Title (Area Code) Telephone Number C �' 24 �� ` Affix NC Licensed/TTpNpsional Geologist Seal - Signature Date °aoeo °00 ��ESS/G°al� 4767 New Broad Street, Suite 222, Orlando, FL 32814 -- Facility Representative Address S E A I ! i e 79('9 PE 007909 p° , 0 Solid Waste Services Table of Contents Section page 1 Introduction.......................................................................................................................................... 1-2 2 Semi-AnnualSampling......................................................................................................................2-3 3 BIOCHLOR...........................................................................................................................................3-5 4 Conclusion............................................................................................................................................4-5 5 References...........................................................................................................................................5-6 Appendices Appendix A Figures Appendix B Tables Appendix C Well Condition Summary Appendix D Sampling Forms Appendix E Summary of Detections Appendix F Summary of Exceedances Appendix G BIOCHLOR Old Buncombe County Landfill i MNA Sampling Report I Solid Waste Services 1 INTRODUCTION The Buncombe County unlined municipal solid waste landfill located at 2726 Riverview Road near Asheville NC, has commenced Monitored Natural Attenuation (MNA) monitoring in accordance with the Corrective Action Plan (CAP) approved September 24, 2014. The Fall sampling event was performed between October 12 and October 19, 2015 along with traditional semi-annual sampling. The Old Buncombe County Landfill (OBCL) is closed and currently monitored under post - closure care. The OBCL collected waste streams in unlined waste areas approved to receive municipal, industrial, and construction solid wastes, along with household waste and yard debris. Leachate from the waste areas have contaminated the groundwater as evidenced from the presence of chlorinated solvents detected in groundwater from down -gradient monitoring wells in excess of North Carolina Department of Environment and Natural Resources (NCDENR) standards beginning in 1985 to the present. Waste Areas A, B, and C stopped receiving waste prior to October 9, 1991. Area D stopped accepting waste on September 27, 1997 in accordance with the North Carolina Solid Waste Management Rule T15A: 13B .1 627(c)(1 0)(A). Institutional controls are in place which restricts the use of, access to the site, and eliminates or minimizes exposure to site contaminants. All disposal areas have been closed and capped in accordance with permit modifications for closure under 15A North Carolina Administrative Code (NCAC) Chapter 13B. The landfill site has controlled access and perimeter fencing to limit site access. An active gas collection system was constructed and is operated by Enerdyne. This system generates power from a small facility located on the property. The County has constructed a Safety Training Facility on property outside of the waste fill area but within the original landfill property limits. Multiple buildings have already been constructed and others are in the planning stages. This area has controlled access and perimeter fencing that isolates its development from the balance of the landfill property. The habitable buildings in this area are equipped with sub floor vapor extraction systems and gas detectors that are monitored continuously by on -site personnel. While these vapor intrusion controls have been installed specifically to address potential methane gas issues, it is expected that the vapor systems in permanently occupied spaces will also help to mitigate any potential issues arising from a vapor intrusion pathway. The groundwater plume has been monitored over the years by a series of monitoring wells - around the perimeter of the landfill (see Figure 1, Appendix A). Currently 24 monitoring wells are sampled semi-annually (DPL-2 was converted to an Injection Well prior to the October 2015 sampling event). Groundwater samples collected from these wells have been analyzed for the typical landfill parameters (metals, semi -volatile organic compounds, volatile organic compounds, etc.. Concentrations in p ) excess of the Title 15A NCAC Subchapter 2L (NC2L) r Old Buncombe County Landfill 1 -2 MNA Sampling Report groundwater standards have been reported primarily for metals and volatile organic compounds (VOCs). The extent of the groundwater plume has been delineated and concentrations of contaminants have generally been declining. Additional remedial measures, enhanced in -situ bioremediation (EIB) were performed in September 2015 in accordance with the March 2015 CAP Addendum and the Injection Permit WI0100353. Five main groundwater flow paths, referred to as transects, have been identified down -gradient from the OBCL waste piles presented below. Transect 1 MW-4A MW-12-25 MW-13-35 M W-13-132 MW-24-45 MW-24-160 Transect 2 MW-B M W-17-60 MW-17-137 Italicized- EIB Injection Well Bold-MNA Performance Well Bold & Italicized-MNA Sentinel Well Transect 3 MW-3 MW-21-21 MW-21-94 Transect 4 MW-DPL-2 MW-4 MW-19-75 MW-19-110 Transect 5 MW-6 MW-6-192 MW-5 DPL-1 MW-18-78 Transects 1 and 5 appear to be long enough to naturally attenuate VOCs observed immediately down -gradient from the waste piles prior to reaching the French Broad River. MNA is the only remedial activity for Transects 1 and 5. Transect 2 appears to have been successfully remediated following the pilot testing of EIB using hydrogen release compound injection. Transect 3 and 4 show contaminants reach the French Broad River before natural attenuation processes may completely de -chlorinate site VOCs. Therefore more aggressive clean-up actions consisting of enhancing natural attenuation through substrate addition were implemented along the short flow path system. DPL-2 and the newly installed IW-1 were used as the fractured bedrock injection points for substrate addition based on their close proximity to the source plume. Direct injection to the base of the regolith was also used to treat the high flow zone which may be used to remediate both short and long fracture controlled flow paths along Transects 3 and 4. Substrate addition was conducted in September, 2015 prior to the Fall 2015 semi-annual sampling event. 2 SEMI-ANNUAL SAMPLING Metals and VOCs were detected in ground water samples which exceeded NC2L Groundwater Standards in concentrations which are consistent with previous sampling results. Surface water sampling demonstrated no constituents were above their SWS reporting limits. Twenty one monitoring wells are sampled during the Fall 2015 event, three monitoring wells were dry and no samples were collected (DPL-1, MW-24-45, and MW-7). Groundwater samples were collected from October 13th through 19"', 2015. The four surface water samples were collected on October 12th, 2015. All samples were collected and analyzed by Pace Laboratories ( in Asheville, NC for analysis of Appendix I and II constituents list as well as MNA parameters as specified in Appendix B, Table 1. Groundwater elevations were also measured and a groundwater contour map for both the shallow -- and deep flow regimes as presented in Appendix A. Field parameters and the well condition were evaluated as presented in Appendix C Well Condition Summary and Append ix D Sampling Forms. Field parameters included: pH, specific conductivity, temperature, dissolved ' oxygen, and oxidation/reduction potential, temperature, and turbidity. Field parameters were also measured at the surface water sampling locations. Eleven of the 21 monitoring wells had concentrations in excess of the NC2L Groundwater Standards. No surface water samples had concentrations in excess of the SWS reporting limits. A summary of detections is provided in Appendix E; a summary of exceedances is provided as Appendix F. The exceedances were consistent with historic concentrations at their respective wells. A summary of the contaminants exceeding the NC2Ls is presented as Appendix B, Table 2. VOC constituents detected include 1,1-dichloroethane, 1,2-dichloropropane, 1,4- dichlorobenzene, 2-butanone, 2-hexanone, 4-methyl-2-pentanone, acetone, benzene, chlorobenzene, chloroethane, cis-1,2-dichloroethene, ethylbenzene, tetrachloroethene, toluene, trichloroethene, vinyl chloride, and xylene. 1, 1 -dichloroethane was detected above the maximum contaminant level of 6 ug/L in MW-21-21 (8.6 ug/L), MW-3 (12 ug/L), and MW-4 (16.7 ug/L). 1,2-dichloropropane was detected above the maximum contaminant level of 700 ug/L in MW- 13-132 (1.4 ug/L). 1,4-dichlorobenzene was detected above the maximum contaminant level of 6 ug/L in MW-13-35 (45 ug/L),.MW-21-21 (10.3 ug/L), MW-3 (9.1 ug/L), MW-4 (11.3 ug/L), MW-4A (86.5 ug/L), and MW-5 (7.4 ug/L). Benzene was detected above the maximum contaminant level of 1 ug/L in MW-13-132 (1.1 ug/L), MW-13-35 (2.3 ug/L), MW-3 (1.1 ug/L), MW-4A (5.3 ug/L), and MW-6 (1.3 ug/L). Tetrachloroethene was detected above the maximum contaminant level of 0.7 ug/L in MW-4 (1.2 ug/L). Vinyl chloride was detected above the maximum contaminant level of 0.03 ug/L in MW-18-78 (1.6 ug/L), MW-21-21 (2.4 ug/L), MW- 3 (3.4 ug/L), MW-4 (3.1 ug/L), and MW-B (2.1 ug/L). Metal constituents detected include antimony, barium chromium, cobalt, iron, lead, manganese, nickel, selenium, vanadium, and zinc. Antimony was detected above the maximum contaminant level of 1 ug/L in MW-15 (12.4 ug/L), and MW-4 (5.3 ug/L). Barium was detected above the maximum contaminant level of 700 ug/L in MW-6 (1410 ug/L). Chromium was detected above the maximum contaminant level of 10 ug/L in MW-15 (12.6 ug/L). Cobalt was detected above the maximum contaminant level of 1 ug/L in MW-21-21 (6.1 ug/L), MW-3 (22 ug/L), MW-4 (64.4 ug/L), MW-4A (32 ug/L), and MW-5 (25.5 ug/L). Nickel was detected above the maximum contaminant level of 100 ug/L in MW-4 (109 ug/L). Metals were detected in the surface water samples including: barium, chromium, cobalt, copper, nickel, vanadium, and zinc. Concentrations were below their SWS reporting limits. Pace analytical laboratories collected groundwater samples, to be tested for MNA parameters, from 10 monitoring wells (MW-2, MW-4, MW-6, MW-13-132, MW-18-78, MW-19-75, MW- 19-110, MW-21-21, MW-21-94, and MW-24-160). Sampling was conducted per the methodology listed in the approved CAP Groundwater and Surface Water Sampling and Analysis Plan for the constituents listed in Appendix B, Table 3. These results were evaluated using the EPA Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents (EPA 1998). A summary table of 2014 and 2015 baseline MNA sampling results is presented as Appendix B, Table 4. Screening results indicate that there is adequate information to suggest natural attenuation is occurring at the performance well locations. Further, screening results indicate that there is strong information to suggest natural attenuation is occurring at the transect3 and 5 sentinel well locations. The range of hydrogen concentrations for a given terminal electron -accepting process show sulfate reduction as the likely MNA process for all three rounds of MNA parameter sampling with some evidence of methanogenesis in the very deep flow regimes based on elevated hydrogen concentrations during the Spring 2015 sampling event. 3 BIOCHLOR The analytical model solution BIOCHLOR (Aziz et al. 1999) provides an integrated platform for analyzing site data and to confirm or quantify attenuation. BIOCHLOR simulates solute transport assuming 1-D advection, 3-D dispersion, linear adsorption, and biotransformation via reductive dechlorination (the dominant biotransformation process at most chlorinated solvent sites). Reductive dechlorination is assumed to follow a first -order decay process. BIOCHLOR Modeling Input rationale and model runs are presented as Appendix E. Model results must be considered qualitative because of the limitations of the BIOCHLOR model and site heterogeneity. Transect 4 were selected for modeling chlorinated ethenes. A model of Transect 4 using historical contaminant data was developed and calibrated to current site data for chlorinated ethenes. The Transect 4 model was then used to help predict future behavior with current conditions (same biotransformation coefficients and inputs) and also with future conditions expected following addition of EIB substrate (reduced half-life of calibrated model). Both PCE and VC showed no impact to the boundary point of compliance with biotransformation occurring which correlates well with historical data. Plume contraction was modeled to occur by 2028 at the current rate of dechlorination. A 50% decrease in degradation half-life correlates to a six year reduction in estimated plume contraction. A 50% decrease in degradation half-life used for the predictive model is anticipated to be conservative given the microcosm half-life measurements. The BIOCHLOR inputs and models for PCE and VC are presented as Appendix G. 4 CONCLUSION The OBCL data presented in this report provides multiple lines of evidence to demonstrate natural attenuation is occurring on site in accordance with EPA Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents (EPA 1998). Overall contaminant concentrations of highly chlorinated VOCs have been decreasing. Fall 2014 MNA sampling data were evaluated using EPA's NINA screening tool, screening values indicate that there is strong information to suggest natural attenuation is occurring in all four MNA performance wells. BIOCHLOR modeling has been presented showing natural attenuation through sequential 1 St order decay. MNA Sampling will continue for one more round of baseline sampling conducted in conjunction with site -wide semi-annual compliance monitoring. BIOCHLOR models will be further calibrated with future analytical results. 5 REFERENCES EPA. 1998. Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground Water. EPA/600/R-98/128, U.S. Environmental Protection Agency, Office of Research and Development, Washington D.C. Solid Waste Services APPENDIX A FIGURES Old Buncombe County Landfill MNA Sampling Report ACTIVE MONITORING WELLS INACTIVE MONITORING WELLS ABANDONED MONITORING WELLS ACTIVE SURFACE WATER SAMPLING LOCATIONS INACTIVE SURFACE WATER SAMPLING LOCATIONS ABANDONED TEMPORARY INJECTION WELLS INJECTION WELL MW-2 MW-8 MW-9 SW-1 SW-5 TW-1 I-W1 MW-3 MW-12-10 MW-10 SW-2 SW-6 TW-2 DPL-2 MW4 MW-13-10 MW-16 SW-2A SW-7 TW-3 MW-4A 1014-14 MW-17 SW-3 SW-8 MW-5 MW-18-3 SW-4 SW-9 MW-6 MW-194 MW-6-192 MW-20-3 MW-7 MW-20-32 MW-12-25 MW-214 MW-13-35 MW-22-78 MW-13-132 MW-22-143 MW-15 MW-23-119 MW-17-60 MW-23-186 MW-17-137 MW-A MW-17-310 DPL-2 M W-18-78 MW-19-75 MW-19-110 MW-21-21 MW-21-94 MW-2445 MW-24-160 DPL-1 MW-B NOTE: ACTIVE SAMPLING MONITORING WELLS AND SURFACE LOCATIONS ARE TO BE NOTE: ONE INJECTION SAMPLED AND TESTED TWICE ANNUALLY. INACTIVE MONITORING WELLS ARE TO BE EVENT 092015. CHECKED FOR DEPTH TO GROUNDWATER ONLY. SW- r 31 — _ — — — IN, MW-1 S 200 i� 0 (1984.30) 0 MW-6-192 tt ; lGIE N !Si ' 1966 -6 > DPL-11�'.` % MW 9 W-5 Dom_ . O \� �MW4 �� \ MW-194. p (DRY) (1943.23) - MW-19-7 �MW-19-11 r,, -W2 (183 ) (1890.98 s f o w. OVMW-16 ♦ m� Mw- 1 f S ao I v/ h MW-214 wow io All), J e ; 7(2087.06) M (2 .81J® / ? �r / MW-17-137 (NR MVI(�(7J1, MW-17-O0 NR jr t-..MW-8 (2039i11) ' 3 r'? -A-"2.21) - _78 ` db d* $ MW-B,. E MW-7 MW-23-„9 MW-22-1 ,71) MW-23-18fi� (2034.66) (2022 � . i r I #2022,54) - ...' i r 3 SW_ W-8 -45 (DRY) ,_ - s�. - • i `'Ba MW-24 �MWi-z4-16oLTe_3i:eoJ' - � � �-A�� MW-13-35MW4A 2011.54) 1.02) MW-13-132 1985.86)�� LEGEND 1 " ♦ i i '"_.J I �r _-"---"!` ei ` ...�� ( MW-i 3-10:t .r,. - J„f .ram (2009.74(20MW-Z4, 5j,- ' 0 ,r' MW-2® ACTIVE GROUNDWATER MONITORING WELL -2-10`' INACTIVE GROUNDWATER MONITORING WELL SW"1® ACTIVE SURFACE WATER MONITORING LOCATION _- f� SW-5® INACTIVE SURFACE WATER MONITORING LOCATION PROPERTY BOUNDARY O ABANDONED TEMPORARY INJECTION WELLS �` � ) fJ ;✓ � INJECTION WELL SCS ENGINEERS Figure 1. Facility Figure, Old Buncombe County Landfill, Buncombe County, North Carolina ACTIVE MONITORING WELLS INACTIVE MONITORING WELLS ABANDONED MONITORING WELLS ACTIVE SURFACE WATER SAMPLING LOCATIONS INACTIVE SURFACE WATER SAMPLING LOCATIONS MW-2 MW-8 SW-1 SW-5 MW-3 MW-12-10 - SW-2 SW-6 MW-4 MW-13.10 - SW-2A SW-7 MW-4A MW-14 SW-3 SW-8 MW-5 MW-183 SW-4 SW-9 MW-6 MW-19-4 MW-6-192 MW-20.3 MW-7 MW-20-32 MW-12-25 MW-21-4 MW-13-35 MW-22-78 MW-13.132 MW-22-143 MW-15 MW-23-119 MW-17.60 MW-23-186 MW-17-137 MW-A M W-17310 MW-18-78 MWA 9-75 MW-19-110 MW-21-21 MW-21-94 MW-24-45 MW-24-160 DPL-1 DPL-2 MW-B NOTE: ACTIVE SAMPLING MONITORING WELLS AND SURFACE LOCATIONS ARE TO BE SAMPLED AND TESTED TWICE ANNUALLY. INACTIVE MONITORING WELLS ARE TO BE CHECKED FOR DEPTH TO GROUNDWATER ONLY. P"' SW-8 .aa� Z �- I _ �+ 200 100 0 200 + . (1983.45) - SCALE IN FEET .MW ( tl g! (19 .50) . 0 � t , r ` 1 (1 2.5) La i N ' n } F 2(}6MW Q ¢ S � lob 21 MW-21/-4 (NR)! s �a O NR / r , a / 0"' % o .� 22094 30 ..- 2021. 1 _ J O ' - �.. a RY) , Gp o\BMW-A - t LEGEND MW-2a ACTIVE GROUNDWATER MONITORING WELL I.--�., I`'1W-8® INACTIVE GROUNDWATER MONITORING WELL N / Ab -' `.l SW-1® ACTIVE SURFACE WATER MONITORING LOCATION o A _ } i,�-'-'-"�\\ �.• d°`f, - _ \. SW-5® INACTIVE SURFACE WATER MONITORING LOCATION c PROPERTY BOUNDARY 2010-- OCTOBER 2015 GROUNDWATER ELEVATION CONTOUR GROUNDWATER FLOW DIRECTION SCS ENGINEERS — Figure 2. Groundwater Contour Map, Old Buncombe County Landfill, Buncombe County, North Carolina APPENDIX B TABLES Old Buncombe County Landfill MNA Sampling Report TABLE I MONITORING WELL SAMPLING SUMMARY Site ID Total Depth Type Semi -Annual MNA Semi -Annual Appendix I Metals & Volatiles Annual Appendix II Field Parameters MW-B 15.4 Compliance Yes Yes MW-2 175 Background Yes Yes Yes Yes MW-3 90 Compliance Yes* Yes* MW-4 75 Performance Yes Yes Yes MW-4A 77 Compliance Yes Yes MW-5 80 Compliance Yes Yes Yes MW-6 40 Performance Yes Yes Yes Yes MW-6-192 192 Compliance Yes Yes MW-7 29 Compliance Yes Yes MW-12-25 26 Compliance Yes Yes MW-13-35 35 Compliance Yes Yes MW-13-132 132 Performance Yes Yes Yes MW-15 72 Compliance Yes Yes MW-17-60 60 Compliance Yes Yes MW-17-137 137 Compliance Yes Yes MW-17-310 310 Compliance Yes Yes MW-18-78 78 Sentinel Yes Yes Yes MW-19-75 75 Compliance Yes Yes MW-19-110 110 Sentinel Yes Yes Yes MW-21-21 21 Performance Yes Yes Yes MW-21-94 94 Sentinel Yes Yes Yes MW-24-45 45 Compliance Yes Yes MW-24-160 160 Sentinel Yes Yes Yes DPL-1 65 Compliance Yes Yes Yes DPL-2 97 EIB Well Yes* Yes* I Yes* EIB Well -This well was used as injection well for Enhanced In -Situ Bioremediation (EIB). *This well was removed from the sampling schedule after enhancements were applied. 00 00 in A Q Q Q Q Q n Q eq H �� wmoaoama� m='comma M Vl M M � A '" '"• A� A� A N� N U m m m m m N m N m m m CD `D � v �"• A A Q oo Q A A U N W 90 w a> w z OC U y r O. O N � aFi O O O U to O O O O O O T = U Q C] A N R E o X a U w Table 3 Analvtical Methods to Monitor Natural Attenuation Analysis Method Data Use Dissolved Field meter The most thermodynamically favored electron Oxygen SM 4500 O G acceptor used by microbes. Nitrate EPA 353.2 Used as an electron acceptor by denitrifying bacteria if oxygen is depleted. Iron (II) EPA 6010 Indicator of iron reducing bacteria. Sulfate EPA 300.0 Used as electron acceptor. Provide evidence of sulfate reducing bacteria. Sulfide Field meter Daughter product of sulfate reduction. May not be SM 4500 S D detected even if sulfate -reducing bacteria are active because it can react with various oxygenated chemical species and metals. Methane, ethane, Bubble Strip Sampler Provide evidence of complete dechlorination of ethene AM 20 GAX chlorinated ethenes, and ethanes. Methane also indicates activity of methanogenic bacteria. Oxidation Field meter Influences and is influenced by the nature of Reduction A2580B biologically mediated degradation of Potential contaminants. pH/ Field meter Biological processes are optimal at pH range of 5 Temperature/ to 9/ Temp>20°C/ measure of ion concentrations. Conductivity Turbidity EPA 180.1 Possible interference. Total Organic SM 5310 B Used to classify plume and to determine if Carbon TOC reductive dechlorination is possible. Biological SM,5210 B Measure of the total concentration of dissolved Oxygen Demand oxygen that would eventually be demanded as (BOD) plume degrades. Chemical SM 5220 D Measure of the total quantity of oxygen required to Oxygen Demand oxidize all organic material into carbon dioxide (COD) and water. CO2 AM 20 GAX Ultimate oxidative daughter product. Alkalinity SM 2320 B Increased levels indicative of carbon dioxide production (mineralization of organic compounds). Chloride SM 4500 Cl E Provides evidence of dechlorination, possible use in mass balancing, may serve as conservative tracer. Dissolved Bubble Strip Sampler Determine type of anaerobic activity (i.e., Hydrogen AM 20 GAX methanogenesis, sulfate and iron reduction Volatile Fatty AM 21 G May provide insight into the types of microbial Acids I activity and serve as electron donors. TABLE 4 EPA MNA BASLINE & SCREENING VALUES EPA Biodegradation Parameters Units Analytical Result/ Screening Value Date MW-2 MW-4 MW-6 MW-13-132 MW-18-78 MW-19-75 MW-19-110 MW-21-21 MW-21-94 MW-24-160 Field pH Std. Units Analytical Result Fall 2014 6.1 6.1 6.1 6.7 6.4 --- 7.3 6.3 6.4 7.2 Analytical Result Spring 2015 6.1 6.0 6.0 6.8 6.4 --- 7.3 6.2 6.5 7.2 Analytical Result Fall 2015 6.3 6.1 6.1 7 6.5 6.2 7.2 6.2 6.7 7.1 Field Temperature deg C Analytical Result Fall 2014 21.7 14.3 24.5 15.7 16.3 --- 16.5 16.3 19.5 14.5 Analytical Result Spring 2015 20.8 15 16.4 17.3 17.3 --- 18.1 13.6 14.1 12.7 Analytical Result Fall 2015 12.9 16.5 18.9 13.9 16.1 17.1 16.9 17.8 18.5 18.4 Field Specific Conductance umhos/cm Analytical Result Fall 2014 120 987 1292 249 701 --- 607 1337 909 147 Analytical Result Spring 2015 122 973 1241 302 651 --- 560 1228 964 149 Analytical Result Fall 2015 118 970 1263 305 678 1089 550 1157 960 151 Dissolved Oxygen mg/L Analytical Result Fall 2014 2.88 2.58 0.82 1.14 0.12 --- 1.1 2.42 1.21 4.6 Analytical Result Spring 2015 3.91 2.9 1.03 1.09 0.81 --- 0.76 1.57 1.62 3.71 Analytical Result Fall 2015 4.66 1 1.6 0.6 0.38 1 0.16 0.57 0.63 0.29 0.38 3.01 Screening Value Fall 2015 --- 0 0 3 3 0 0 3 3 0 Turbidity NTU Analytical Result Fall 2014 277 1.91 2.05 1.59 2.15 --- 2.2 2.04 1.93 4.8 Analytical Result Spring 2015 3.2 3.14 4.09 4.22 29 --- 3.13 16.7 4.01 5.7 Analytical Result Fall 2015 1.74 6.93 24.78 0.42 0.35 1.78 3.05 2.51 6.68 3.79 Oxidation Reduction Potential m/V Analytical Result Fall 2014 165.8 31.2 -39 -46.9 -56.9 --- -114.6 -331 -58.4 147.3 Analytical Result Spring 2015 203.1 86.4 -2.1 -50.8 -29.8 --- -92.7 -16.5 -40.5 49.6 Analytical Result Fall 2015 163.6 24.8 -33.2 -82.4 -84.4 -26.4 -49.7 -33 -109.9 138.3 Screening Value Fall 2015 --- 1 1 1 1 1 1 1 2 1 Alkalinity, as CaCO3 mg/L Analytical Result Fall 2014 50.1 390 529 111 241 --- 227 580 299 41.6 Analytical Result Spring 2015 45.6 346 464 101 195 --- 179 475 308 39.5 Analytical Result Fall 2015 50.1 380 477 115 207 321 173 430 299 45.2 Screening Value Fall 2015 --- 1 1 1 1 1 1 1 1 0 Chloride mg/L Analytical Result Fall 2014 2 85.6 113 5 78.4 --- 54.7 105 107 7.1 Analytical Result Spring 2015 1.96 74.2 113 4.19 76.2 --- 49.8 101 119 6.5 Analytical Result Fall 2015 2.16 84.8 110 4.9 87.3 153 46.5 108 119 8.05 Screening Value Fall 2015 --- 2 2 2 2 2 2 2 2 2 Iron ug/L Analytical Result Fall 2014 4850 3010 37200 3000 25400 --- 2600 21400 16800 209 Analytical Result Spring 2015 720 3380 34400 5010 22600 1 --- 1880 19800 19800 276 Analytical Result Fall 2015 1 94.8 3970 40700 14800 21800 8580 1660 1 13800 17400 92.2 Screening Value Fall 2015 --- 1 3 3 3 3 3 3 3 3 0 Nitrogen, Nitrate mg/L Analytical Result Fall 2014 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U --- 0.02 U 0.02 U 0.02 U 0.066 Analytical Result Spring 2015 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U --- 0.02 U 0.02 U 0.02 U 0.066 Analytical Result Fall 2015 51.5 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 74.7 Screening Value Fall 2015 --- 2 2 2 2 2 2 2 2 0 Sulfate mg/L Analytical Result Fall 2014 4.4 32.1 3.5 8.6 2 U --- 13.2 34.3 8.1 9.8 Analytical Result Spring 2015 4.56 32.9 4.87 11.4 2 U --- 15.8 37.6 4.76 10.4 Analytical Result Fall 2015 3.99 31.1 4.26 10.5 2 U 21 16.4 36.5 3.26 10.3 Screening Value Fall 2015 --- 0 2 2 2 0 2 0 2 2 Sulfide mg/L Analytical Result Fall 2014 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U --- 0.1 U 0.1 U 0.12 0.1 U Analytical Result Spring 2015 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U --- 0.1 U 0.1 U 0.1 U 0.1 U Analytical Result Fall 2015 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U Total Organic Carbon mg/L Analytical Result Fall 2014 8.7 30.5 38 26 44.7 --- 27.4 75.7 15 5.3 Analytical Result Spring 2015 1 U 7.54 11.2 1 U 3.87 --- 4 13.6 10.7 1 U Analytical Result Fall 2015 1 U 5.12 7.12 1 U 3.12 8.62 3.31 10.7 7.94 1 U Carbon Dioxide ug/L Analytical Result Fall 2014 36000 470000 550000 35000 160000 --- 24000 510000 170000 6000 Analytical Result Spring 2015 54000 1 110000 450000 20000 100000 --- 12000 370000 79000 5300 Analytical Result Fall 2015 38000 300000 410000 13000 100000 320000 11000 250000 83000 5800 Screening Value Fall 2015 --- 1 1 0 1 1 0 1 1 1 0 Ethene ug/L Analytical Result Fall 2014 0.00991 0.065 0.23 0.051 0.51 --- 0.094 0.36 1.2 0.00991 Analytical Result Spring 2015 0.0091 0.00871 0.26 0.037 0.24 --- 0.048 0.16 0.94 0.008 U Analytical Result Fall 2015 0.00631 0.023 0.18 0.019 0.18 0.029 0.027 0.078 0.27 0.0056J Ethane ug/L Analytical Result Fall 2014 0.00221 0.23 0.52 0.099 1.6 -- 0.2 0.18 0.46 0.00781 Analytical Result Spring 2015 0.0012 J 0.02 0.62 0.04 1.3 --- 0.13 0.13 0.75 0.00151 Analytical Result Fall 2015 0.00111 0.061 0.23 0.023 0.42 0.03 0.017 0.025 1 0.057 0.00111 Hydrogen nM Analytical Result Fall 2014 1.3 1.4 1.7 1.2 1.3 --- 1.1 1.3 1.5 1.5 Analytical Result Spring 2015 1.3 1.4 1.9 54 1.3 --- 1.4 1.1 10 1.2 Analytical Result Fall 2015 1.1 1.3 1.4 1.2 1.5 1.3 1.9 1.2 4.5 1.2 Screening Value Fall 2015 --- 3 3 3 3 3 3 3 3 3 Methane ug/L Analytical Result Fall 2014 0.18 1900 3200 840 3300 --- 630 1400 2000 0.71 Analytical Result Spring 2015 0.074 140 3000 320 2100 --- 310 370 1700 0.3 Analytical Result Fall 2015 0.066 440 900 160 760 47 37 1 170 240 0.057 Screening Value Fall 2015 --- 0 3 0 3 0 0 0 0 0 Acetic Acid ug/L Analytical Result Fall 2014 810 U 810 U 810 U 810 U 810 U --- 810 U 810 U 810 U 810 U Analytical Result Spring 2015 890 U 9801 890 U 890 U 11001 --- 890 U 890 U 1300 J 890 U Analytical Result Fall 2015 240 J 230 J 1501 1801 200 J 210 J 150 J 1901 210 J 180 J Butyric Acid ug/L Analytical Result Fall 2014 700 U 700 U 700 U 700 U 700 U --- 700 U 700 U 700 U 700 U Analytical Result Spring 2015 1400 U 1400 U 1400 U 1400 U 1400 U --- 1400 U 1400 U 1400 U 1400 U Analytical Result Fall 2015 160 J 66 J 81 J 130 J 120 J 120 J 50 U 130 J 1101 1101 Lactic Acid ug/L Analytical Result Fall 2014 2500 U 2500 U 4100 J 2500 J 2500 U --- 2500 U 2500 U 2500 U 2500 U Analytical Result Spring 2015 2400 U 2400 U 2400 U 2400 U 2400 U --- 2400 U 2400 U 2400 U 2400 U Analytical Result Fall 2015 88 J 511 170 J 93 J 1101 70 J 130 J 440 J 1101 95 J Propionic Acid ug/L Analytical Result Fall 2014 660 U 660 U 660 U 660 U 660 U --- 660 U 660 U 660 U 660 U Analytical Result Spring 2015 730 U 730 U 730 U 730 U 730 U --- 730 U 730 U 730 U 730 U Analytical Result Fall 2015 34 J 27 J 191 32 J 30 J 28 J 14 J 27 J 291 33 J Pyruvic Acid ug/L Analytical Result Fall 2014 770 U 770 U 770 U 770 U 770 U --- 770 U 770 U 770 U 770 U Analytical Result Spring 2015 640 J 410 U 410 U 410 U 810 J --- 870 J 710 J 1200 J 950 J Analytical Result Fall 2015 120 U 120 U 120 U 120 U 120 U 120 U 120 U 120 U 120 U 120 U Tetrachloroethene ug/L Analytical Result Fall 2014 1 U 1.8 1 U 1 U S U S U l U l U 1 U 1 U Analytical Result Spring 2015 1 U 1.4 1 U 1 U 1 U 1 U 1 U S U 1 U 1 U Analytical Result Fall 2015 1 U 1.2 1 U 1 U 1 U S U 1 U 1 U S U I U Trichloroethene ug/L Analytical Result Fall 2014 1 U 1.8 1 U 1 U 1 U 1 U l U S U 1 U 1 U Analytical Result Spring 2015 1 U 1.7 1 U 1 U S U 1 U 1 U 1 U 1 U 1 U Analytical Result Fall 2015 1 U 1.3 1 U 1 U 1 U S U S U l U 1 U 1 U Screenin Value Fall 2015 --- 2 0 0 0 0 0 0 0 0 cis-1,2-Dichloroethene ug/L Analytical Result Fall 2014 1 U 19.5 1 U 23.1 1 U 1 U 1 19.7 4.9 1 U Analytical Result Spring 2015 1 U 22 1.1 23.1 1 U 1 U 1 U 18.2 1 4.1 1 U Analytical Result Fall 2015 1 U 18.7 1 U 26.6 1 U 1 U 1 U 11.8 3.4 1 U Screening Value Fall 2015 --- 2 0 2 0 0 0 2 2 0 Vinyl chloride ug/L Analytical Result Fall 2014 1 U 2.7 1 U 3 U 2.2 1 U 3 U 3.4 1 U 1 U Analytical Result Spring 2015 1 U 2.6 1 U 1 U 1 1.6 1 U 1 U 2.5 1 U 1 U Analytical Result Fall 2015 1 U 3.1 l U 1 U 1.6 1 U 1 U 2.4 1 U 1 U Screening Value Fall 2015 --- 2 1 0 0 2 0 0 2 0 0 1,1,1-Trichloroethane ug/L Analytical Result Fall 2014 1 U 1 U 1 U 1 U S U 1 U 1 U 1 U 1 U 1 U Analytical Result Spring 2015 1 U 1 U 1 U 1 U 1 U l U 1 U 1 U 1 U l U Analytical Result Fall 2015 1 U 1 U 1 U 1 U l U S U S U 1 U 1 U l U Screening Value Fall 2015 --- 0 0 0 0 0 0 0 0 0 Chloroethane ug/L Analytical Result Fall 2014 1 U 1 U 4.5 1 U 1 1 U 1 U S U 3.8 6 1 U Analytical Result Spring 2015 1 U 2.8 5.2 1 U 1 U 1 U 1 U 3.6 5.8 1 U Analytical Result Fall 2015 1 U 1 U 1 4.2 1 U 1 U 1 U 2.7 S U 4.1 1 U Screening Value Fall 2015 --- 0 2 0 0 0 2 0 2 0 BOD, 5 day mg/L Analytical Result Fall 2014 2 U 2 U 15 2 U 5.1 --- 2 U 4.6 12.6 2 U Analytical Result Spring 2015 14.2 5.2 11.1 4.75 3.3 --- 2 2.53 5.85 4.9 Analytical Result Fall 2015 2 U 2 U 7.3 2 U 6.1 2 U 2 U 2 U 11.3 2 U Chemical Oxygen Demand mg/L Analytical Result Fall 2014 25 U 36 29 25 U 25 U --- 25 U 48 25 U 25 U Analytical Result Spring 20151 25 U 30 44 25 U 25 U 25 U 44 1 32 25 Analytical Result Fall 2015 25 U 25 U I 25 U 25 U 25 U 25 U 25 U 25 U 1 25 U 25 U Sum of Screening Values 23 13 23 8 Notes: Assumes all contamination comes from tetrachloroethene and rest of chlorinated organics are daughter products. - Screening results of 5 or below indicate that there is inadequate information to suggest natural attenuation is occurring at well location - Screening results above 5 indicate that there is limited information to suggest natural attenuation is occurring at well location �- Screening results above 15 indicate that there is adequate information to suggest natural attenuation is occurring at well location - Screening results above 20 indicate that there is strong information to suggest natural attenuation is occurring at well location APPENDIX C WELL CONDITION SUMMARY I Old Buncombe County Landfill MNA Sampling Report aceAnatyficai K'M/W,PBCB/9A�C'O/!l Document.Name: Well Condition Summary Document No.: F-ASV-F=008-rev.00 Document Revised: May 27, 2014 Pace Analytical Services, Inc. 2225 Riverside Drive . Issuing Authorities: Pace Asheville Quality office Phone: 828.254.7176 Fax 828.252.4618 Site, WELL CONDITION SuMMARy 2 QLa L 1/- 1-76,' `J Personnel: ®tea �, J,1� / —Page / of L. Well gD Protective Casing Well Casing Label Lock OK OK OK Yes ❑ ❑ ❑ —Damaged Dama ed made irate No. 1;;1-- OK ir` 13— EJ— OK OK Yes Dama ed _Damaged Inade uate No OK OK OK Yes ❑ ❑ ❑ .Dama ed D�ma ed. Inadequate Lf-A 7-� (� OK OK OK Ye-s Damaged m Daa ed Inadequate No OK OK OK Yes Dama ed Dama ed In! uate No. EllOK OK OK Yes Damaged —Damaged, Tnade irate. No. Dama ed Da! ed Inade t N Sample Equipment Cam ments/Observations* -- Ype I -If cat. (t ua e o *Note ponding water, weep holes, or any other information pertaining to well condition. Provide additional details on listed items. Return this form. to SCS Engineers aceAnal fta! Document Name: Well Condition Summary ry Docdment Revised: May 27, 2014 Pace Analytical Services, inc. w.n8o@rgos moo"' 2225 Riverside Drive Asheville, NC 28804 Document No.: F-ASV-E-008-rev.00. Issuing, Authorities: Pace Asheville Quality Office Phone: 828.254.7176 Fax: 828.252.4618 Site: ��c �� l F WELL CONDITION SUMMARY i� DG-� '.S c F ,�-r Personnel. A_? 41114..3 Date: x Page ®g s — Aq Well gD Protective Casing Well Casing Label Lock Sample Equipment Cole ments/Observations* 17 OK OK OK Type Yes Dama ed Damaged made uate No OK OK OK Yes Gslc (( Ct�iz p ❑ 144...0 Damaged Dama ed Inadequate No OK Q--__'" OK 'OK 1'es Q CZ Dam. a ed ama ed Damaged- made oats No. !" / - 2__ OK OK OK Yes o ❑ Dama ed Damaged Inade uate.. No OK OK OK Yes Dama ed Dama ed -.Damaged Inade oats No (3 - J- OK per-_ ❑� ❑ ' OK OK Yes T r ❑ Damaged ❑ Damaged ❑ Inadequate ❑ Noil� c 12 --0 Damaged Dama ed Inade uate No *Note ponding water, weep holes, or any other information peAaining to well condition. Provide additional details on listed items: Return this form to SCS Engineers aceArralytiea! Document Name: well Condition Summary Document Revised: May'27, 2014 Pace Analytical Services, Inc. '+ww.pocalabs.com 2225 Riverside Orive Asheville, NC 28804 Document No.: F-ASV F-008-rev.00 Issuing Authorities: Pace Asheville Quality Office Phone: 828.254.7176 Fax: 828.252.4618 r� WELL CONDITioN sUAEVURY Site,rJN PO sonnet" ,! r Date: 1 o Z Page �ei9 g® Protective Casing well Casing Label Lock Sample EqUlp' ent Comments/Obsefrvations* TV0 . ` OK OK OK Yes ❑ ❑ ❑ ❑ -r`f Darn: ed Dama ed Inadequate No i� f 0— 'OK OK OK Yesc ❑ ❑ ❑ ❑ Gv� �2 .r,? Damaged, _...Damaged —Inadequate— No OK OK OK Yes ( / ❑ ❑ ❑✓r..���? Damaged Damaged —Inadequate— No OK OK OK Yesr2vrs>/Jl ❑ p . ❑ ❑ i r�`3�cc�.. Dama ed Damaged— Inadequate No OK OK El — 4/l. OK Yes .Da ma ed Dama ed Inadequate No OK OK OK Yes Damaged Damaged Inade uate No ❑ ❑ ❑ ❑ v1 Dama e e a e ua *Note ponding water; weep holes, or any other information peAaining to listed items. Return this form to SCS Engineers well condition. Provide additional details on Document Name: well CondiYaon.Summary Document Revised; May 27, 2014 aceAnalytical www,pa6elaCs.com Document No.: Issuing Authorities; F-ASV-F-008-rev.00 Pace Asheville Quality Office WELL CONDITION SUMMARY Site: POIfs®nnello Date- i / J Page 9 Pace.Analytical Services, Inc. 2225 Riverside Drive Asheville, NC 28804 Phone: 828.254.7176 Fax. 828.252.4618 �✓G�''r''C jj C� Cr Well ED Protective Casing Well Casing Label Lock Sample I Equipment Cogs meats/Observations* Type OK OK OK Yes Dama ed Damaged Inadequate No OK El OK OK Yes ?� 2 ,� F � ` `l p ❑c~r� Damaged Dama ed Inadequate No OK OK OK Yes �� 'Damaged: 'Damaged Inadequate No ND AL r j-- OK OK OK Yes: i'`(~✓` '. tcr� / N - - Dama ed Dama ed Inade uate No a--. OK OK OK Yes, Damacied, Damaged Inadequate No OK OK OK Yes Damaged _-Damacled Inadequate Now re f Dama ed Damaged Inadequate No *Note ponding water, weep holes, or any -other information pe►{taining to well condition. Provide additional details on listed items. Return this form to SCS Engineers �, Document Name: well Condition Summaiy aceAnaljftal �. www:pi�celabs,gom: Document No.: F-ASV-F-008-rev.00 Document Revised: May 27, 2014 Issuing Authorities: Pace Asheville Quality Office WELL CONDITION S ARC'. Site: t'3 c/ / L 1�g r (� r c <� G <=" Pe.rsonnelo Dated �. Page of Pace Analytical.Seryices, Inc. 2225 Riverside Drive Asheville, NC 28804 Phone: 828.254.7176 Fax: 828.252A618 C_ Weill ID Protective Casing Well Casing Label hock sample Equipment pe Comments/Observations* OK Dama ed OK Damaged OK Inadequate, Yes No p OK Damaged p OK Damaged ❑ OK .Inade irate ❑ Yes No OK ❑ Damaged OK ❑ Dama ed OK p _Inadequate Yes p No O OK o Dama edi ❑ OK a Damaged __Inadequate p OK p Yes No ❑ OK o Damaged ❑ OK ❑ Dama ed OK ❑ inadequate— Yes ❑ No ❑ OK Damaged p OK _Damaged p OK Inadequate, Yes ❑ Damaged ❑ Dama ed —No ❑ Inade uate p No �Ivote ponding water, weep holes, or any other information. per6inlr g to well condition. Provide additional details on listed items. Return this form to SCS Engineers aceAnalydCal - Document Name: well Condition Summary Documegi Revised: May 27;2014 Pace Analytical Services, Inc. 2225 wwH'neaaa°s'`°"' Riverside Drive Asheville, NC 28804 Document No.: F-ASV-17-008-rev.00 Issuing Authorities: Pace Asheville Quality Office Phone: 828.254.7176 Fa)c 828.252.4618 Site. /Loyd WELL CO ITI®N SUMMARY c� 606/,/ 6l '�'o y/=� Personneh Date. CD 0 t I Page of well ED Protective using Well Casing Label )Lock Sample Equipment Comments/Orbservations* [� Type OK OK OK' Yes Dama Red Damaged No. C7` p-'_—Inadequate�.-,. J OK OK OK Yes Damaged Dama ed Inadequate No ❑ ❑ OK OK OK Yes (fie l ❑ ❑ C. Damaged . Damaged Inadequate No ❑ ❑ o j OK OK OK Yes �✓� I' Damaged —Damacied Inadequate No �' 0-- OK Er C — OK OK Yes (iJ L Dama ed Damaged Inade uate No �J ' ❑ OK ❑ ❑ ❑ t OK OK Yes '/0 .Damaged Damaged Inade uate No ❑ a o 171 e de uate No *Note ponding water, weep holes; or any other information peAaming to well condition listed items. Return this form to SCS Engineers Provide additional details on 1. ; Document Name: Well Condition summary Document Revised: May 27, 2014 Pace Analytical Services, Inc. aceAnalyfical� 2225 Riverside Drive Asheville, NC 28804 Document No.: Issuing Authorities: Phone: 826.254.7176 F-ASV-F-008-rev.00 Pace Asheville Quality Office Fa)c 828.252.4618 WELL CONDITION SUMMARY bite:y v� per/ C�, c?� Personnel° l' t Dated 1 d G ! ; Page Well ID Protective Casing Well Casing Label Lock Sample Equipment Type Comments/Dtxservations* OK ❑ __Damaged OK ❑ Dama ed OK ❑ Inade uate Yes (,LfAr ❑ No ( ❑ OK ❑ Dama ed ❑ OK ❑ Damacied ❑ OK ❑ Inade uate ❑ Yes / ❑rV'� No -OK OK OK Yes =- Dama ed ❑ Dama ed oEl Inadequate No C g 12-- OK p-- OK 2--` OK Yes (,IA_L ❑ Damaged p Damaged ❑ Inade "irate. p ...No . OK ❑ Dama ed OK ❑ Damaged OK Inade uate Yes No 3 OK Damaged OK —Damaged OK _Inadequate Yes No Dama ed Damaged --Inadequate No *Note ponding water, weep holes, or any other information 0et4taining to well condition. Provide additional details on listed items. Return this form to SCS Engineers Document Name: well Condition Summary Document Revised: May 27, 2014 aceAnalj fieal ' wwv.ptcetees_com Document No.: Issuing Authorities: F-ASV-F-008-rev.00 Pace Asheville Quality Office WELL CONDITION SUMMARY Site, t!'! c' o /4 4 G. C D L- r Personnel: Dated / p , Page Of Pace Analytical Services, Inc. 2225 Riverside Drive Asheville, NC 28804 Phone: 828.254.7176 Fax 828.252.4618 Well. ED Protective Casing Well Casing Label lock Sample Equipment Type Comments/Observations* 15- .� OK -Damaged OK Damaged OK Inade uate . Yes No; -- �� L " OK Damaged OK Dama ed OK made uate Yes No 2- • �a OK OK El-- . OK �-� Yes ❑ Dama ed p Damaged ❑. Inade uate ❑ No OK OK OK 'Yes ❑ Damaged ❑ Damaged p Inadecivate . ❑ No _ fl-- p— ❑_ _ . p�_ OK OK OK Yes ❑ Damaged ❑ Damaged ❑ Inadecivate. F No OK Damaged OK _...Damaged OK _Inadequate Yes No D ma ed --Damaged Inade uate No *Note ponding water, weep holes, or any other information pertaining to well condition. Provide additional details on listed items. Return this'form to SCS Engineers APPENDIX D SAMPLING FORMS Old Buncombe County Landfill MNA Sampling Report LO N 0 O LO Rage.. of.cc m a � r ° I4# (> , 4. S s { I t , t ------------------- ° ..,:,.,':. ...: i;:.:. �..Lu..,:; .'. .. .•...;:.. : ,' :� ,�.. . ,' ,., �.;.• ..„--„„: F 0 • .. �� co m t .. .. m a - ;. us DocumentRevised;:Aug t 4, 20T1' D'ocumgnf;Name Page 1 of 1 �� A ca 4nah�Fi�al ` Report Form for,i �2Cd (ViOT[ItOf Iris cciune u on s i a th tie ;: ate Time Sampfe� sample:ID Water Level (FY) PN (units) 7e[tiP i°GJ ; Sped cific Conductivity Turbidity� {NTUJ bR n ments Q?r ufiraios C , n : - Ix I'3 , L-1 ' W , t k -7 AAW-�� 7 i •. Al t E , i ao o ,It 00 a) rn M Document Name: Document Revised: "August 4,,2011 Page 1 of I f ! Report Form for"Field MoniEoring Ye?C�'AC7e?lVtfGe?j Document No:.: issuing Authorities:: F-AVL F=004 rey,00 Pace Asheville Quality Office .. Face Analytical Services, Inc Report Form for Field Monitoring Location Cale Time sample Sample iD Water Level (Ft) pH.(units): "Temp ("C) Specific, ConductivityORP (uhmos) Turbidity' (NTU) comrn.ents l t� = i l✓ r..�?7 ..., j. /.•I / �/i (`.l !. :�t��� :7/��1 ,C4ii.lCiC f.✓� t s n I_:!i.-��% !rt t'...+- �� ��, i r / �s.:l ��i: `�� .:. ��, h✓.` 7.:r �� f } .' �j V � .���V„/. �r �{-"� : �I , . APPENDIX E SUMMARY OF DETECTIONS Old Buncombe County Landfill MNA Sampling Report Detections By Date Range Buncombe County Old Facility From: 10/13/2015 To: 10/19/2015 Site ID Analyte Date Result MW-12-25 1,2-Dichlorobenzene 10/13/2015 1.5 ug/L 1,4-Dichlorobenzene 10/13/2015 3.7 ug/L Barium 10/13/2015 113 ug/L Chlorobenzene 10/13/2015 4.9 ug/L Nickel 10/13/2015 19.6 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 7450 ug/I Zinc _ 10/13/2015 14.1 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 1 of 17 Site ID Analyte Date Result MW-13-132 M-Dichloroethane 10/16/2015 2.6 ug/L 1,2-Dichloropropane 10/16/2015 1.4 ug/L 1,4-Dichlorobenzene 10/16/2015 1.4 ug/L Acetic Acid 10/16/2015 180 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/16/2015 115000 ug/L Barium 10/16/2015 28.6 ug/L Benzene 10/16/2015 1.1 ug/L Butyric Acid 10/16/2015 130 J,H1,B,d ug/L Carbon Dioxide 10/16/2015 13000 ug/L Chloride 10/16/2015 4900 ug/L cis-1,2-Dichloroethene 10/16/2015 26.6 ug/L Ethane 10/16/2015 0.023 ug/L Ethene 10/16/2015 0.019 ug/L Iron 10/16/2015 14800 ug/L Lactic Acid 10/16/2015 93 J,H1,B,d ug/L Methane 10/16/2015 160 ug/L Oxygen, Dissolved, Dissolved 10/16/2015 380 ug/I Propionic Acid 10/16/2015 32 J,H1,B,d ug/L Sulfate 10/16/2015 10500 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 2 of 17 Site ID Analyte Date Result MW-13-35 1,2-Dichlorobenzene 10%13/2015 8.9 ug/L 1,4-Dichlorobenzene 10/13/2015 45 ug/L Barium 10/13/2015 196 ug/L Benzene 10/13/2015 2.3 ug/L Chlorobenzene 10/13/2015 10.1 ug/L cis-1,2-Dichloroethene 10/13/2015 7.9 ug/L Nickel 10/13/2015 5.2 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 6000 ug/I Zinc 10/13/2015 31.1 ug/L MW-15 Antimony 10/13/2015 12.4 ug/L Barium 10/13/2015 202 ug/L Chromium 10/13/2015 12.6 ug/L Lead 10/13/2015 5.8 ug/L Nickel 10/13/2015 8.8 ug/L Oxygen, Dissolved,, Dissolved - 10/13/2015 4560 ug/I Selenium 10/13/2015 11.4 ug/L MW-17-137 1,1-Dichloroethane 10/13/2015 1.2 ug/L Barium 10/13/2015 23.2 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 80 ug/I MW-17-310 Oxygen, Dissolved, Dissolved 10/14/2015 2980 ug/I I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 3 of 17 Site ID Analyte Date Result MW-17-60 1,1-Dichloroethane 10/13/2015 1.6 ug/L Barium 10/13/2015 20.8 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 80 ug/I MW--18-78 1,1-Dichloroethane 10/14/2015 1.8 ug/L 1,4-Dichlorobe nzene 10/14/2015 1.1 ug/L Acetic Acid 10/14/2015 200 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/14/2015 207000 ug/L Barium 10/14/2015 39 ug/L BOD, 5 day - 10/14/2015 6060 ug%L Butyric Acid 10/14/2015 120 J,H1,B,d ug/L Carbon Dioxide 10/14/2015 100000 ug/L Chloride 10/14/2015 87300 ug/L Chlorobenzene 10/14/2015 2.7 ug/L Ethane 10/14/2015 0.42 ug/L Ethene 10/14/2015 0.18 ug/L Iron 10/14/2015 21800 ug/L Lactic Acid 10/14/2015 110 J,H1,B,d ug/L Methane 10/14/2015 760 ug/L Oxygen, Dissolved, Dissolved 10/14/2015 160 ug/L Propionic Acid 10/14/2015 30 J,H1,B,d ug/L Total Organic Carbon 10/14/2015 3120 ug/L Vinyl chloride 10/14/2015 1.6 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 - Page 4 of 17 Site ID Analyte Date Result AlW-19-I10 Acetic Acid 10/14/2015 150 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/14/2015 173000 ug/L Barium 10/14/2015 12.8 ug/L Carbon Dioxide 10/14/2015 11000 ug/L Chloride 10/14/2015 46500 ug/L Chloroethane 10/14/2015 2.7 ug/L Ethane 10/14/2015 0.017 ug/L Ethene 10/14/2015 0.027 ug/L Iron 10/14/2015 1660 ug/L Lactic Acid 10/14/2015 130 J,H1,B,d ug/L Methane - 10/14/2015 37 ug/L Nickel 10/14/2015 5 ug/L Oxygen, Dissolved, Dissolved 10/14/2015 630 ug/L Propionic Acid 10/14/2015 14 J,H1,B,d ug/L Sulfate 10/14/2015 16400 ug/L Total Organic Carbon 10/14/2015 3310 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 5 of 17 Site ID Analyte Date Result MW-19-75 1,1-Dichloroethane 10/14/2015 1.4 ug/L 1,4-Dichlorobenzene 10/14/2015 3.5 ug/L Acetic Acid 10/14/2015 210 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/14/2015 321000 ug/L Barium 10/14/2015 100 ug/L Butyric Acid 10/14/2015 120 J,H1,B,d ug/L Carbon Dioxide 10/14/2015 320000 ug/L Chloride 10/14/2015 153000 ug/L Chlorobenzene 10/14/2015 3.5 ug/L Ethane_ 10/14/2015 0.03 ug/L Ethene 10/14/2015 0.029 ug/L Iron 10/14/2015 8580 ug/L Lactic Acid 10/14/2015 70 J,H1,B,d ug/L Methane 10/14/2015 47 ug/L Nickel 10/14/2015 16.7 ug/L Oxygen, Dissolved, Dissolved 10/14/2015 570 ug/L Propionic Acid 10/14/2015 28 J,H1,B,d ug/L Sulfate 10/14/2015 21000 ug/L Total Organic Carbon 10/14/2015 8620 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 6 of 17 Site ID Analyte Date. Result MW-2 Acetic Acid Alkalinity, Total as CaCO3 Barium Butyric Acid Carbon Dioxide Chloride Ethane Ethene Iron Lactic Acid Methane Nitrogen, Nitrate Oxygen, Dissolved, Dissolved Propionic Acid Sulfate 10/19/2015 240 J,H1,B,d ug/L 10/19/2015 50100 ug/L 10/19/2015 19 ug/L 10/19/2015 160 J,H1,B,d ug/L 10/19/2015 38000 ug/L 10/19/2015 2160 ug/L 10/19/2015 0.0011 J ug/L 10/19/2015 0.0063 J ug/L 10/19/2015 94.8 ug/L 10/19/2015 88 J,H1,B,d ug/L 10/19/2015 0.066 ug/L 10/19/2015 51.5 ug/L 10/19/2015 4660 ug/L 10/19/2015 34 J,H1,B,d ug/L 10/19/2015 3990 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 7 of 17 Site ID Analyte Date Result MW--21-21 M-Dichloroethane 10/15/2015 8.6 ug/L 1,2-Dichlorobenzene 10/15/2015 2.9 ug/L 1,4-Dichlorobenzene 10/15/2015 10.3 ug/L Acetic Acid 10/15/2015 190 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/15/2015 430000 ug/L Barium 10/15/2015 106 ug/L Butyric Acid 10/15/2015 130 J,H1,B,d ug/L Carbon Dioxide 10/15/2015 250000 ug/L Chloride 10/15/2015 108000 ug/L Chlorobenzene 10/15/2015 17.2 ug/L cis- 1,2-Dichloroethene 10/15/2015 11.8 ug/L Cobalt 10/15/2015 6.1 ug/L Ethane 10/15/2015 0.025 ug/L Ethene 10/15/2015 0.078 ug/L Iron 10/15/2015 13800 ug/L Lactic Acid 10/15/2015 440 J,H1,B,d ug/L Methane 10/15/2015 170 ug/L Oxygen, Dissolved, Dissolved 10/15/2015 290 ug/L Propionic Acid 10/15/2015 27 J,H1,B,d ug/L Sulfate 10/15/2015 36500 ug/L Total Organic Carbon 10/15/2015 10700 ug/L Vinyl chloride 10/15/2015 2.4 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, Februmy 08, 2016 Page 8 of 17 Site ID Analyte Date Result MW--21-94 1,4-Dichlorobenzene 10/15/2015 1.7 ug/L Acetic Acid 10/15/2015 210 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/15/2015 299000 ug/L Barium 10/15/2015 50.7 ug/L BOD, 5 day 10/15/2015 11300 ug/L Butyric Acid 10/15/2015 110 J,H1,B,d ug/L Carbon Dioxide 10/15/2015 83000 ug/L Chloride 10/15/2015 119000 ug/L Chlorobenzene 10/15/2015 1.4 ug/L Chloroethane 10/15/2015 4.1 ug/L cis- 1,2-Dichloroethene 10/15/2015 3.4 ug/L Ethane 10/15/2015 0.057 ug/L Ethene 10/15/2015 0.27 ug/L Iron 10/15/2015 17400 ug/L Lactic Acid 10/15/2015 110 J,H1,B,d ug/L Methane 10/15/2015 240 ug/L Nickel 10/15/2015 9.6 ug/L Oxygen, Dissolved, Dissolved 10/15/2015 380 ug/I Propionic Acid 10/15/2015 29 J,H1,B,d ug/L Sulfate , 10/15/2015 3260 ug/L Total Organic Carbon 10/15/2015 7940 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 9 of 17 Site ID Analyte Date Result M Y-24-160 Acetic Acid 10/19/2015 180 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/19/2015 45200 ug/L Barium 10/19/2015 7.6 ug/L Butyric Acid 10/19/2015 110 J,H1,B,d ug/L Carbon Dioxide 10/19/2015 5800 ug/L Chloride 10/19/2015 8050 ug/L Ethane 10/19/2015 0.0011 J ug/L Ethene 10/19/2015 0.0056 J ug/L Iron 10/19/2015 92.2 ug/L Lactic Acid 10/19/2015 95 J,H1,B,d ug/L Methane 10/19/2015 0.057 ug/L Nitrogen, Nitrate 10/19/2015 74.7 ug/L Oxygen, Dissolved, Dissolved 10/19/2015 3010 ug/I Propionic Acid 10/19/2015 33 J,H1,B,d ug/L Sulfate 10/19/2015 10300 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 10 of 17 Site ID Analyte Date Result MW-3 M-Dichloroethane 10/15/2015 12 ug/L 1,4-Dichlorobenzene 10/15/2015 9.1 ug/L Barium 10/15/2015 182 ug/L Benzene 10/15/2015 1.1 ug/L Chlorobenzene 10/15/2015 2.5 ug/L Chloroethane 10/15/2015 7 ug/L cis- 1,2-Dich loroethena 10/15/2015 10.9 ug/L Cobalt 10/15/2015 22 ug/L Nickel 10/15/2015 16.3 ug/L Oxygen, Dissolved, Dissolved 10/15/2015 130 ug/I Vinyl chloride 10/15/2015 3.4 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 11 of 17 Site ID Aualyte Date Result MW-4 1,1-Dichloroethane 10/15/2015 16.7 ug/L 1,2-Dichlorobenzene 10/15/2015 1.1 ug/L 1,4-Dichlorobenzene 10/15/2015 11.3 ug/L Acetic Acid 10/15/2015 230 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/15/2015 380000 ug/L Antimony 10/15/2015 5.3 ug/L Barium 10/15/2015 599 ug/L Butyric Acid 10/15/2015 66 J,H1,B,d ug/L Cadmium 10/15/2015 1.1 ug/L Carbon Dioxide 10/15/2015 300000 ug/L Chloride 10/15/2015 84800 ug/L Chlorobenzene 10/15/2015 3 ug/L cis-1,2-Dichloroethene 10/15/2015 18.7 ug/L Cobalt 10/15/2015 64.4 ug/L Ethane 10/15/2015 0.061 ug/L Ethene 10/15/2015 0.023 ug/L Iron 10/15/2015 3970 ug/L Lactic Acid 10/15/2015 51 J,H1,B,d ug/L Methane 10/15/2015 440 ug/L Nickel 10/15/2015 109 ug/L Oxygen, Dissolved, Dissolved 10/15/2015 1600 ug/I Propionic Acid 10/15/2015 27 J,H1,B,d ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected -in both the sample and the associated method blank. Monday, February 08, 2016 Page 12 of 17 Site ID Analyte Date Result MW-4 Sulfate Tetrachloroethene Total Organic Carbon Trichloroethene Vinyl chloride Zinc 10/15/2015 31100 ug/L 10/15/2015 1.2 ug/L 10/15/2015 5120 ug/L 10/15/2015 1.3 ug/L 10/15/2015 3.1 ug/L 10/15/2015 16.6 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 13 of 17 Site ID Analyte Date Result MW-4A 1,2-Dichlorobenzene 10/16/2015 9 ug/L 1,4-Dichlorobenzene 10/16/2015 86.5 ug/L 2-Butanone 10/16/2015 19.2 ug/L 2-Hexanone 10/16/2015 7.7 ug/L 4-Methyl-2- p e n to n o n e 10/16/2015 8 ug/L Acetone 10/16/2015 39.2 ug/L Barium 10/16/2015 673 ug/L Benzene 10/16/2015 5.3 ug/L Chlorobenzene 10/16/2015 12 ug/L Cobalt 10/16/2015 32 ug/L Ethylbenzene 10/16/2015 9 ug/L Nickel 10/16/2015 9.4 ug/L Oxygen, Dissolved, Dissolved 10/16/2015 _ 1250 ug/I o-Xylene 10/16/2015 7.3 ug/L Toluene 10/16/2015 5.2 - ug/L Xylene, m,p- 10/16/2015 11.1 ug/L Xylenes- Total 10/16/2015 18.4 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 14 of 17 Site ID Analyte Date Result MW-5 1,4-Dichlorobenzene Barium Chlorobenzene Cobalt Nickel Oxygen, Dissolved, Dissolved 10/13/2015 10/13/2015 10/13/2015 10/13/2015 10/13/2015 10/13/2015 7.4 ug/L 151 ug/L 11.8 ug/L 25.5 ug/L 16 ug/L 1700 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 15 of 17 Site ID Analyte Date Result MW-6 1,1-Dichloroethane 10/14/2015 5.9 ug/L 1,4-Dichlorobe nzene 10/14/2015 4.7 ug/L Acetic Acid 10/14/2015 150 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/14/2015 477000 ug/L Barium 10/14/2015 1410 ug/L Benzene 10/14/2015 1.3 ug/L BOD, 5 day 10/14/2015 7260 ug/L Butyric Acid 10/14/2015 81 J,H1,B,d ug/L Carbon Dioxide 10/14/2015 410000 ug/L Chloride 10/14/2015 110000 ug/L Chlorobenzene 10/14/2015 12.6 ug/L Chloroethane 10/14/2015 4.2 ug/L Ethane 10/14/2015 0.23 ug/L Ethene 10/14/2015 0.18 ug/L Iron 10/14/2015 40700 ug/L Lactic Acid 10/14/2015 170 J,H1,B,d ug/L Methane 10/14/2015 900 ug/L Nickel 10/14/2015 5.6 ug/L Oxygen, Dissolved, Dissolved 10/14/2015 600 ug/L Propionic Acid 10/14/2015 19 J,H1,B,d ug/L Sulfate 10/14/2015 4260 ug/L Total Organic Carbon 10/14/2015 7120 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 16 of l7 Site ID Aualyte Date Result MW-6-192 UI :6 e 1,1-Dichloroethane 10/14/2015 1.2 ug/L 1,4-Dichlorobenzene 10/14/2015 1.4 ug/L Barium 10/14/2015 62.4 ug/L Chlorobenzene 10/14/2015 2 ug/L Oxygen, Dissolved, Dissolved 10/14/2015 2880 ug/I Barium 10/13/2015 201 ug/L cis-1,2-Dich loroethene 10/13/2015 3.8 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 3880 ug/I Vinyl chloride 10/13/2015 2.1 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 17 of 17 Detections By Date Range Buncombe County New Facility . From: 10/1/2015 To: 10/1/2015 Site ID Analyte Date Result SW-1 SW-2 Barium 10/1/2015 191 ug/L Field pH 10/1/2015 6.2 Std. Field Specific Conductance 10/1/2015 99 umh Field Temperature 10/1/2015 18.5 deg ORP 10/1/2015 35.8 mV Oxygen, Dissolved, Dissolved 10/1/2015 990 ug/L Turbidity 10/1/2015 5.58 NTU Zinc 10/1/2015 17.9 ug/L Barium 10/1/2015 62.3 ug/L Field pH 10/1/2015 6.5 . Std. Field Specific Conductance 10/1/2015 149 umh Field Temperature 10/1/2015 18.5 deg ORP 10/1/2015 156.5 mV Oxygen, Dissolved, Dissolved 10/1/2015 8020 ug/L Turbidity 10/1/2015 7.79 NTU I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page I of 4 Site ID Analyte Date Result SW-3 Barium 10/1/2015 42.1 ug/L Field pH 10/1/2015 7.5 Std. Field Specific Conductance 10/1/2015 188 umh Field Temperature 10/1/2015 20.8 deg ORP 10/1/2015 176.7 mV Oxygen, Dissolved, Dissolved 10/1/2015 5530 ug/L Turbidity 10/1/2015 3.46 NTU SW-4 Barium 10/1/2015 134 ug/L Chromium 10/1/2015 7.1 ug/L Cobalt 10/1/2015 5.2 ug/L Copper 10/1/2015 11.8 ug/L Field pH 10/1/2015 6.4 Std. Field Specific Conductance 10/1/2015 269 umh Field Temperature 10/1/2015 19.2 deg Nickel 10/1/2015 11.2 ug/L ORP 10/1/2015 152.6 mV Oxygen, Dissolved, Dissolved 10/1/2015 8150 ug/L Turbidity 10/1/2015 53 NTU Vanadium 10/1/2015 13.7 ug/L Zinc 10/1/2015 28.4 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 2 of 4 Site ID Analyte Date Result SW-5 Barium 10/1/2015 83.5 ug/L Field pH 10/1/2015 6.9 Std. Field Specific Conductance 10/1/2015 336 umh Field Temperature 10/1/2015 19.5 deg Nickel 10/1/2015 5.2 ug/L ORP 10/1/2015 192.7 mV Oxygen, Dissolved, Dissolved 10/1/2015 7510 ug/L Turbidity 10/1/2015 7.03 NTU SW-6 Barium 10/1/2015 88.3 ug/L Field pH 10/1/2015 6.7 Std. Field Specific Conductance 10/1/2015 210 umh Field Temperature 10/1/2015 17.9 deg ORP 10/1/2015 184.2 mV Oxygen, Dissolved, Dissolved 10/1/2015 5800 ug/L Turbidity 10/1/2015 6.33 NTU I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 - Page 3 of 4 Site ID Aualyte Date Result SW-7 Barium 10/1/2015 195 ug/L Field pH 10/1/2015 6.3 Std. Field Specific Conductance 10/1/2015 307 umh Field Temperature 10/1/2015 20.5 deg Nickel 10/1/2015 22.3 ug/L ORP 10/1/2015 174.4 mV Oxygen, Dissolved, Dissolved 10/1/2015 2580 ug/L Turbidity 10/1/2015 3.04 NTU Zinc 10/1/2015 15.8 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Monday, February 08, 2016 Page 4 of 4 APPENDIX F SUMMARY OF EXCEEDANCES Old Buncombe County Landfill MNA Sampling Report Exceedances by Date Range. Buncombe County Old Facility From: 10/13/2015 To: 10/16/2015 Site ID Analyte Date Result MW-13-132 1,2-Dichloropropane MCL: 0.6 ug/L 10/16/2015 1.4 ug/L Benzene MCL: 1 ug/L 10/16/2015 1.1 ug/L MW--13-35 MW-15 MW-18-78 1,4-Dichlorobenzene MCL: 6 ug/L Benzene MCL: 1 ug/L Antimony MCL: Chromium MCL: 1 ug/L 10 ug/L Vinyl chloride MCL: 0.03 ug/L 10/13/2015 10/13/2015 10/13/2015 10/13/2015 10/14/2015 45 ug/L 2.3 ug/L 12.4 ug/L 12.6 ug/L 1.6 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. T/iursday, February 04, 2016 Page 1 of 4 Site ID Analyte Date Result MW-21-21 1,1-Dichloroethane MCL: 6 ug/L 10/15/2015 8.6 ug/L 1,4-Dichlorobenzene MCL: 6 ug/L 10/15/2015 10.3 ug/L Cobalt MCL: 1 ug/L 10/15/2015 6.1 ug/L Vinyl chloride MCL: 0.03 ug/L UTIf r IM 10/15/2015 2.4 ug/L 1,1-Dichloroethane MCL: 6 ug/L 10/15/2015 12 ug/L 1,4-Dichlorobenzene MCL: 6 ug/L 10/15/2015 9.1 ug/L Benzene MCL: 1 ug/L 10/15/2015 1.1 ug/L Cobalt MCL: 1 ug/L 10/15/2015 22 ug/L Vinyl chloride MCL: 0.03 ug/L 10/15/2015 3.4 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Thursday, February 04, 2016 Page 2 of 4 Site ID Aualyte Date Result MW-4 1,1-Dichloroethane MCL: 6 ug/L 10/15/2015 16.7 ug/L 1,4-Dichlorobenzene MCL: 6 ug/L 10/15/2015 11.3 ug/L Antimony MCL: 1 ug/L 10/15/2015 5.3 ug/L Cobalt MCL: 1 ug/L 10/15/2015 64.4 ug/L Nickel MCL: 100 ug/L 10/15/2015 109 ug/L Tetrachloroethene MCL: 0.7 ug/L 10/15/2015 1.2 ug/L Vinyl chloride MCL: 0.03 ug/L 10/15/2015 3.1 ug/L ulfT T2M15 MW--S 1,4-Dichlorobenzene MCL: 6 ug/L 10/16/2015 86.5 ug/L Benzene MCL: 1 ug/L 10/16/2015 5.3 ug/L Cobalt MCL: 1 ug/L 10/16/2015 32 ug/L 1,4-Dichlorobenzene MCL: 6 ug/L 10/13/2015 7.4 ug/L Cobalt MCL: 1 ug/L 10/13/2015 25.5 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Thursday, February 04, 2016 Page 3 of 4 Site ID Analyte Date Result MW-6 Barium MCL: 700 ug/L 10/14/2015 1410 ug/L Benzene MCL: 1 ug/L MW--B Vinyl chloride MCL: 0.03 ug/L 10/14/2015 10/13/2015 1.3 ug/L 2.1 ug/L I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit. V = Indicates the anlyte was detected in both the sample and the associated method blank. Thursday, February 04, 2016 Page 4 of 4 APPENDIX G BIOCHLOR Old Buncombe County Landfill MNA Sampling Report I i t -. ,� � � � � � � � -- __ •.�f'•' .. ,. BIOCHLOR Natural Attenuation Decision Support System Version 2.2 Excel 2000 TYPE OF CHLORINATED SOLVENT: Ethenes 0 5. GENERAL Ethanes O Simulation Time* 1. ADVECTION Modeled Area Width* Seepage Velocity* Vs 206.9 (ft/yr) Modeled Area Length* or Zone 1 Length* Hydraulic Conductivity K 1.0E-03 (cm/sec) Zone 2 Length* Hydraulic Gradient i 0.04 (ft/ft) Effective Porosity n 0.2 ( ) 2. DISPERSION Alpha x* 300 (ft) Calc. (Alpha y) / (Alpha x)* 0.1 (Alpha z) / (Alpha x)* 1.E-99 (-) 3. ADSORPTION Retardation Factor* - -- - R or Soil Bulk Density, rho 2.67 (kg/L) FractionOrganicCarbon, foc 1.0E-3 (-) Partition Coefficient Koc y PCE 426 (L/kg) 6.54 H TCE 130 (L/kg) 2.69 N DCE 125 (L/kg) 2.63 (-) VC 30 (L/kg) 1,38 (-) ETH 302 (L/kg) 4.93 H Common R (used in model)* = 1.25 4. BIOTRANSFORMATION -1st Order Decay Coefficient* Zone 1 r 1/ r half-life (rs) Yield PCE TCE 1.777 0,39 0.79 TCE DCE 1.873 0.37 0.74 DCE VC 2.166 0.32 0.64 VC ETH 1.980 0:35 0.45 Zone 2 1/ r half-life ( rs) PCE -- TCE 0.000 E- i TCE DCE 0.000 HELP DCE VC 0.000 <- VC ETH 0.000 < 6. SOURCE DATA Source Options Old Buncombe County Landfill Run Name 20 (yr) f L -' 1000 (ft) W 3000 (ft) 1 3000 (ft) 0 (ft) Zone 2= L -Zone 1 TYPE: Decaying Single Planar / Source Thickness in Sat. Zone* = (ft) Y1 Width* (ft) 1000 ks* Conc. (mg/L)* C1 (1/yr) PCE .008 0.022 TCE .008 0.022 DCE .002 :0.022VC .002 .02ETH .0 2/ 7. FIELD DATA FOR COMPARISON PCE Conc. (mg/L) TCE Conc. (mg/L) DCE Conc. (mg/L) VC Conc. (mg/L) ETH Conc. (mg/L) Distance from Source (ft) Data Input Instructions: 115 1. Enter value directly.... or T or 2. Calculate by filling in gray 0.02 cells. Press Enter, then C (To restore formulas, hit "Restore Formulas' button ) Variable* Data used directly in model. Test if BiotransformatioL. Natural Attenuation is Occurring __- Vertical Plane Source: Determine Source Well Location and Input Solvent Concentrations View of Plume Looking Down Observed Centerline Conc. at Monitoring Wells Date Data Collected 2014 j 8. CHOOSE TYPE OF OUTPUT TO SEE: RUNHelp Restore RESET RUN ARRAY ti. ,,, .... .,, . a a ,.. CENTERLINE SEE Paste DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg(L) at Z=O Distance from Source Ift1 PCE No De_qradation �Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.007 0.007 0.005 0.004 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.0073 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 1 450 1 925 Field Data from Site 0.002 1 0.001 —No Degradation/Production 1.000 J 0.100 Monitorina Well Locations -Sequential 1st Order Decay :: Field Data from Site c 0 4-1 L = 0.010 m 0 o .. 00 U 0.001 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) See PCE See TCE See DCE See VC See ETH Time: 4.0 Years Return to Replay ; — Input To All To Array Log <=*Linear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ftl PCE 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 ` No Degradation 0.007 0.007 0.006 0.005 0.004 0.007_ 0.001 0.001 0.000 0.000 0.000 Biotransformation 0.0070 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Monitoring Well Locations (ft) 100 450 925 Field Data from Site 0.002 0.001 —No Degradation/Production Sequential 1st Order Decay .: Field Data from Site 1.000 See PCE See TCE 0.100 c 0 See DCE ca L = 0.010 ..A, See VC U p _ 0 :7 �� See ETH U 0.001 - L _, __ 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) Time: - 6.0 Years Return to Replay ' To All To Array Log C=Linear Input DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) PCE No Degradation Biotransformation 0 1 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.007 0.007 0.006 0.006 0.005 0.004 0.003 0.002 0.001 0.001 0.000 0.0067 1 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 450 925 Field Data from Site 0.002 0.001 —No Degradation/Production 1.000 J 0.100 U 0.001 0 Monitorinq Well Locations -Sequential 1st Order Decay 500 1000 1500 2000 2500 Distance From Source (ft.) H Field Data from Site 3000 3500 See PCE See TCE See DCE See VC See ETH Time: 8.0 Years Return to Replay Input To All To Array Log Linear r- DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 PCE No Degradation Biotransformation Distance from Source Ift► 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.006 0.007 0.006 0.006 0.005 0.004 0.004 0.003 0.002 0.001 0.001 0.0064 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 450 1 925 Field Data from Sitel 0.002 1 0.001 —No Degradation/Production 1.000 1 J Monitorinq Well Locations —Sequential 1st Order Decay .: Field Data from Site See PCE See TCE See DCE See VC See ETH DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) vc No Degradation Biotransformation a11 .11 •11 „ 11 :11 II •,, 11 ,,, , 11 1 1 11 111 1 / 11 1 / 11 1 111 111 1 111 1 111 1 111 III I 100 450 925 Field Data from Site 0.004 1 0.003 No Degradation/Production 1.000 J 0.100 c 0 L = 0.010 m Cp ��... U 0.001 -- 0 500 Monitoring Well Locations —Sequential 1st Order Decay H Field Data from Site 1000 1500 2000 Distance From Source (ft.) See PCE See TCE See DCE Time: .0 Years Return to Replay 2 I Input To All To Array Loy C=,Linear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) VC - - No Degrradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.0019 0.002 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 450 925 r- Field Data from Site 0.004 0.003 -No Degradation/Production 1.000 J 0.100 c 0 ce 0.010 m c 0 0.001 0 500 1000 Monitoring Well Locations -Sequential 1 st Order Decay 1500 2000 Distance From Source (ft.) Time: 4.0 Years Replay Log C--Linear 2500 N Field Data from Site Return to Input See PCE See TCE See DCE See VC See ETH 3500 To All To Array 3i DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source Iftl VC No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.002 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.0018 0.002 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 450 L_ 925 Field Data from Site 0.004 0.003 No Degradation/Production 1.000 J_ 0.100 U 0.001 0 500 1000 Monitoring Well Locations -Sequential 1st Order Decay 1500 2000 Distance From Source (ft.) :� Field Data from Site See PCE See TCE See DCE See VC See ETH 2500 3000 3500 Time: 6.0 Years Return to Replay I To All To Array Input Log �=Linear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) of Z=O vc No Degradation Biotransformation Distance from Source (ft) a11 •11 •11 11 11 :11 „ •11 11 111 1 11 : 1 11 1 11 1 11 1 111 1 111 1 111 1 111 1 111 1 1 1 1 111 100 1 450 925 Field Data from Site 1 0.004 1 0.003 -No Degradation/Production 1.000 J 0.100 C 0 Monitoring Well Locations -Sequential 1st Order Decay :: Field Data from Site cc 0.010 d L) 0 U 0.001 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) See PCE See TCE See DCE See VC See ETH To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=O Distance from Source (ft) vc No Degradation Biotransformation 1 100 1 450 1 925 Field Data from 0.004 1 0.003 1 1 -No Degradation/Production 1.000 &100 0 ca 0.010 0 0.001 0 500 1000 Monitorinq Well Locations -Sequential 1st Order Decay :: Field Data from Site 1500 2000 2500 3000 Distance From Source (ft.) Time: I Replay 10 Return to Log <,,:�Linear Input See PCE See TCE See DCE See VC See ETH 3500 To All To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source Iftl vc No Degradation Biotransformation 1 11 1 11 / 11 1 1/1 1111 1 1/1 / 111 1 111 1 111 1 111 1 111 100 450_ 925 Field Data from Site 0.004 0.003 No Degradation/Production 1.000 J 0.100 c 0 .Y 0.010 m � o 0 U n nn Monitoring Well Locations (ft) -Sequential 1st Order Decay 11 Field Data from Site Input To All See PCE See TCE See DCE See ETH DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source Iftl vc No Degradation Biotransformation a„ „ •,, 11 „ :11 11 •,, „ 1 „ Monitoring Well Locations (ft) 100 450 925 Field Data from Site i 0.004 0.003 No Degradation/Production -Sequential 1st Order Decay U Field Data from Site 1.000 J 0.100 c 0 cu a010 c) G: c IN 0 U 0.001 _ - -- — 0 500 1000 1500 _ 2000 2500 3000 3500 Distance From Source (ft.) Time: Replay y 20.0 Years _ Return to To All I Log C==:>Linear Input See PCE See TCE See DCE See VC See ETH To Array '0I i� BIOCHLOR Natural Attenuation Decision Support System Old Buncombe Version 2.2 County Landfill Excel 2000 Run Name TYPE OF CHLORINATED SOLVENT: Ethenes 5. GENERAL Ethanes O Simulation Time* 11 (yr) 1. ADVECTION Modeled Area Width* 1000 (ft) Seepage Velocity* Vs 206.9 (ft/yr) Modeled Area Length* 3000 (ft) or 41 Zone 1 Length* 3000 (ft) Hydraulic Conductivity K 1.0E-03 (cm/sec) Zone 2 Length* 0 (ft) Hydraulic Gradient i 0.04 (ft/ft) Effective Porosity n 0.2 (-) 2. DISPERSION Alpha x* 300 (ft) Calc. (Alpha y) / (Alpha x)* 0.1 (-) (Alpha z) / (Alpha x)* 1.E-99 (-) 3. ADSORPTION Retardation Factor* -- - - R or Soil Bulk Density, rho 2.6 (kg/L) FractionOrganicCarbon, foc 1.0E-3 H Partition Coefficient Koc y PCE 426 (L/kg) 6.54 H TCE 130 (L/kg) 2.69 H DCE 125 (Ukg) 2.63 H VC 30 (L/kg) 1,38 H ETH 302 (L/kg) 4.93 H Common R (used in model)* = 1.25 4. BIOTRANSFORMATION -1st Order Decay Coefficient* Zone 1 1/ r half-life (rs) Yield PCE --. TCE 0.877 0.79 0.79 TCE - DCE 0.936 0.74 0.74 DCE > VC 1.083 0.64 0.64 VC ETH 1.540 0,45 0.45 Zone 2 <::�� ?. 1/ r half-life (rs) PCE - TCE F ti TCE DCE HELP DCE VC < VC - -> ETH 0.0400<- 6. SOURCE DATA Source Options Zone 2= L - Zone 1 TYPE: Decaying Single Planar Source Thickness in Sat. Zone* Y1 Width* (ft) 1 1000 Conc. (mg/L)* C1 PCE .008 TCE 08 r3002 DCE 02 VC ETH 7. FIELD DATA FOR COMPARISON PCE Conc. (mg/L) TCE Conc. (mg/L) DCE Conc. (mg/L) VC Conc. (mg/L) ETH Conc. (mg/L) Distance from Source (ft) 75 (ft) Data Input Instructions: 115 1. Enter value directly .... or fh or 2. Calculate by filling in gray 0.02 cells. Press Enter, then C , (To restore formulas, hit "Restore Formulas" button ) Variable* ® Data used directly in model. Test if Biotransformatiof-, Natural Attenuation is Occurring Vertical Plane Source: Determine Source Well Location and Input Solvent Concentrations ks* (1 /yr) - 0.01 - 0.01 View of Plume Looking Down 0.01 0.01 Observed Centerline Conc. at Monitoring Wells 0.0 i Date Data Collected 2015 8. CHOOSE TYPE OF OUTPUT TO SEE: DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) PCE No Degradation Biotransformation a/1 •11 •11 11 11 :1/ 11 •11 11 111 1 11 1 11 1 11 1 1/1 1 /11 1 1/1 1 111 1 111 1 111 1 1/1 1 111 100 450 925 Field Data from Site 0.008 0.001 0.000 -No Degradation/Production 1.000 Replay J 0.100 c 0 L = 0.010 00 c 0 U 0.001 600 0 500 1000 Monitorina Well Locations -Sequential 1 st Order Decay :: Field Data from Site 1500 2000 Distance From Source (ft.) Time: 1.1 Years Log < =Linear 2500 3000 Return to Input 3500 To All See PCE See TCE See DCE See VC See ETH To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) PCE No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.008 0.006 0.004 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0078 0.004 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 See PCE See TCE See DCE See VC See ETH To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 PCE No Degradation Biotransformation Field Data from Site Distance from Source (ft) 0 1 300 600 1 900 1200 1500 1800 2100 1 2400 2700 3000 0.007 0.007 0.007 0.006 0.004 0.003 0.002 0.001 0.000 0.000 0.000 0.0075 0.004 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 11 �� 1 11 1 1// Monitorina Well Locations —No Degradation/Production —Sequential 1st Order Decay : Field Data from Site 1.000 See PCE J See TCE 0.100 c See DCE L = 0.010 See VC cs c 0 00 See ETH U 0.001 c� _ _ 2100 _ 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) � a Time: 6.6 Years Returnt ' Replay Log < Linear o To All Input To Array � .. J' 'r;,�.� � .. .. � j1�. � DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 PCE No Degradation Biotransformation Distance from Source (ft) 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.007 0.007 0.007 0.007 0.006 0.005 0.004 0.003 0.002 0.002 0.001 0.0072 0.003 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 1 450 1 925 Field Data from Site 1 0.008 1 0.001 1 0.000 -No Degradation/Production 1.000 r J_ 0.100 c O ca 0.010 (D L) o U 0.001 I 0 Replay Monitoring Well Locations Sequential 1st Order Decay :7 Field Data from Site 500 1000 1500 2000 2500 3000 See PCE See TCE To All To Array BIOCHLOR Natural Attenuation Decision Support System Version 2.2 Excel 2000 TYPE OF CHLORINATED SOLVENT: Ethenes 5. GENERAL Ethanes O Simulation Time* 1. ADVECTION Modeled Area Width` Seepage Velocity' Vs 206.9 (ft/yr) Modeled Area Length* or T Zone 1 Length` Hydraulic Conductivity K 1.0E-03 (cm/sec) Zone 2 Length' Hydraulic Gradient i 0.04 (ft/ft) Effective Porosity n 0.2 (-) 2. DISPERSION Alpha x' 300 (ft) Calc. (Alpha y) / (Alpha x)' 0.1 (-) (Alpha z) / (Alpha x)* 1.E-99 (-) 3. ADSORPTION Retardation Factor' R or Soil Bulk Density, rho 2.6 (kg/L) FractionOrganicCarbon, foc 1.0E-3 (-) Partition Coefficient Koc y PCE 426 (L/kg) "6.54 ' H TCE 130 (L/kg) 2.69 H DCE 125 (L/kg) 2.63 H VC 30 (L/kg) 1.38 H ETH 302 (L/kg) 4.93 H Common R (used in model)` = 1.25 4. BIOTRANSFORMATION -1st Order Decay Coefficient' Zone 1 h 1I r half-life (rs) Yield PCE TCE 0.877 F EO.45 0.79 TCE DCE 0.936 E- 0.74 DCE VC 1.083 F 0.64 VC ETH 1.540 Zone 2 /_ 1/ r half-life ( rs) PCE) TCE 0.000 E- TCE - DCE 0.000 HELP DCE - VC 0.000 <- VC ETH 0. 000 <' Old Buncombe Data Input Instructions: County Landfill 115 1. Enter value directly .... or Run Name 4` or 2. Calculate by filling in gray 0.02 cells. Press Enter, then C , 30 1000 (yr) (ft) L -' W (To restore formulas, hit 'Restore Formulas" button ) Variable` Data used direct) in model. 3000 (ft) 1 Test if 3000 0 (ft) (ft) Zone 2= Biotransformatio� Natural Attenuation is Occurring L - Zone 1 - Vertical Plane Source: Determine Source Well 6. SOURCE DATA TYPE: Decaying Single Planar Location and Input Solvent Concentrations Source Options g j d Source Thickness in Sat. Zone` 75 (ft) - ----- Y 1- Width` (ft) 1000 ks' Conc. (mg/L)` C1 (1/yr) PCE .008 0.01 TCE .008 0,01 View of Plume Looking Down DCE .002 0.01 VC .002 0.01 Observed Centerline Conc. at Monitoring Wells ETH 0.01 7. FIELD DATA FOR COMPARISON / PCE Conc. (mg/L) TCE Conc. (mg/L) DCE Conc. (mg/L) VC Conc. (mg/L) ETH Conc. (mg/L) Distance from Source (ft) Date Data Collected 8. CHOOSE TYPE OF OU RUN CENTERLINE .008 TPUT .001 .0 .008 .01 .0 .002 .017 .0 0.0 .003 .0 100 450 925 2015 TO SEE: RUN ARRAY Restore RESET Help SEE `, Paste DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) VC No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0020 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Monitoring Well Locations (ft) 100 450 925 Field Data from Site 1 0.002 1 0.003 0.000 —No Degradation/Production —Sequential 1st Order Decay :: Field Data from Site 1.000 J 0.100 c 0 cv L = 0.010 m U _ �y 0 U 0.001 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) Time: Replay 3.0 Years Log C�Linear Return to Input To All See PCE See TCE See DCE See VC See ETH To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0x Distance from Source (ft) VC No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.002 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0,0020 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 ----------- 100 450 925 Field D-ata from Site 0.002 0.003 0.000 No Degradation/Production 1.000 , Replay J Monitorina Well Locations —Sequential 1 st Order Decay H Field Data from Site c O n nnn U 0.001 - -- 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) Time: _ 6.0 Years Return to To All i Log <^��Linear Input See PCE See TCE See DCE See VC See ETH To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) VC No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.0019 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 Monitoring Well Locations 100 450 925 Field Data from Site 1 0.002 0.003 0.000 —No Degradation/Production Sequential 1 st Order Decay 1.000 T O C O w ca L = 0.010 0 o -C C) 0.001--- 0 500 1000 1500 2000 2500 Distance From Source (ft.) :2 Field Data from Site 3000 3500 See PCE See TCE See DCE See VC See ETH Time: I 9.0 Years Replay ! Return to To All To Array Log CLinear Input DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 Distance from Source (ft) VC No Degradation Biotransformation 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.0019 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 Monitoring Well Locations 100 450 925 Field Data from Site 0.002 0.003 0.000 —No Degradation/Production Sequential 1st Order Decay 1.000 J 0.100 c O ca L = 0.010 m U o U 0.001 - -- - ---. 0 500 1000 1500 2000 2500 Distance From Source (ft.) .: Field Data from Site 3000 3500 See PCE See TCE See DCE See VC See ETH Time: 12.0 Years Return to Replayi To All To Array Log <=*Linear Input DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mg/L) at Z=0 uC _ No Degradation Biotransformation Distance from Source (ft) 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 0.002 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.0016 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 100 450 925 Field Data from Site 0.002 0.003 0.000 —No Degradation/Production 1.000 r J 0.100 w L = 0.010 m v Monitoring Well Locations Sequential 1st Order Decay .: Field Data from Site _I N Q nnn nnn nnn nnn n. nn o 0+489-00—..40�.. 0 500 1000 1500 2000 2500 3000 3500 Distance From Source (ft.) _ Time: 30.0 Years Return to Replay Input ' To All Log <��Linear See PCE See TCE See DCE See VC See ETH To Array