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Home My WebLink About1101_BuncombeCounty_GWMReport_DIN26419_20151019 Old Buncombe County Landfill Permit No. 1101 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 February 11, 2016 File No. 09204072.14 Offices Nationwide www.scsengineers.co Solid Waste Services Old Buncombe County Landfill i MNA Sampling Report Table of Contents Section Page 1 Introduction .......................................................................................................................................... 1-2 2 Semi-Annual Sampling ...................................................................................................................... 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 Solid Waste Services Old Buncombe County Landfill 1-2 MNA Sampling Report 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 .1627(c)(10)(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 excess of the Title 15A NCAC Subchapter 2L (NC2L) 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 Transect 2 Transect 3 Transect 4 Transect 5 MW‐4A MW‐B MW‐3 MW‐DPL‐2 MW‐6 MW‐12‐25 MW‐17‐60 MW‐21‐21 MW‐4 MW‐6‐192 MW‐13‐35 MW‐17‐137 MW‐21‐94 MW‐19‐75 MW‐5 MW‐13‐132 MW‐19‐110 DPL‐1 MW‐24‐45 MW‐18‐78 MW‐24‐160 Italicized- EIB Injection Well Bold-MNA Performance Well Bold & Italicized-MNA Sentinel Well 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 19th, 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 Appendix 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 MNA 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 1st 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 Old Buncombe County Landfill MNA Sampling Report APPENDIX A FIGURES L E G E N D MW-B DPL-2 DPL-1 MW-24-160 MW-24-45 MW-21-94 MW-21-21 MW-19-110 MW-AMW-19-75 MW-23-186MW-18-78 MW-23-119MW-17-310 MW-22-143MW-17-137 MW-22-78MW-17-60 MW-21-4MW-15 MW-20-32MW-13-132 MW-20-3MW-13-35 MW-19-4MW-12-25 MW-18-3MW-7 MW-16MW-6-192 MW-14MW-6 SW-9SW-4 MW-13-10MW-5 SW-8SW-3 MW-12-10MW-4A SW-7SW-2A MW-10MW-4 SW-6SW-2 MW-9MW-3 SW-5SW-1MW-8MW-2 INACTIVE SURFACEWATERSAMPLING LOCATIONS ACTIVE SURFACEWATERSAMPLING LOCATIONS INACTIVEMONITORING WELLS ACTIVEMONITORING WELLSNOTE: ACTIVE SAMPLING MONITORING WELLS AND SURFACE LOCATIONS ARE TO BESAMPLED AND TESTED TWICE ANNUALLY. INACTIVE MONITORING WELLS ARE TO BECHECKED FOR DEPTH TO GROUNDWATER ONLY. M W - 2 M W - 8 S W - 1 S W - 5 A C T I V E G R O U N D W A T E R M O N I T O R I N G W E L L I N A C T I V E G R O U N D W A T E R M O N I T O R I N G W E L L A C T I V E S U R F A C E W A T E R M O N I T O R I N G L O C A T I O N I N A C T I V E S U R F A C E W A T E R M O N I T O R I N G L O C A T I O N P R O P E R T Y B O U N D A R Y MW-17 ABANDONEDMONITORING WELLS Old Buncombe County Landfill MNA Sampling Report APPENDIX B TABLES 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* 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. MONITORING WELL SAMPLING SUMMARY TABLE 1 Fe n c e Tr a n s e c t 2 Mo n i t o r i n g W e l l N u m b e r MC L 1 5 4 A 1 3 - 3 5 1 3 - 1 3 2 2 4 - 1 6 0 B 3 2 1 - 2 1 2 1 - 9 4 4 1 9 - 1 1 0 6 5 1 8 - 7 8 VO C s 1, 1 - D i c h l o r o e t h a n e 6 u g / L B D L B D L BD L 2 . 6 B D L B D L 12 8 . 6 BD L 16 . 7 BD L 5 . 9 B D L 1 . 8 1, 2 - D i c h l o r o p r o p a n e 0. 6 u g / L B D L B D L BD L 1. 4 BD L B D L B D L B D L B D L B D L B D L B D L B D L B D L 1, 4 - D i c h l o r o b e n z e n e 6 u g / L B D L 86 . 5 45 1. 4 B D L B D L 9. 1 1 0 . 3 1. 7 11 . 3 BD L 4 . 7 7.4 1.1 Be n z e n e 1 u g / L B D L 5.3 2. 3 1 . 1 BD L B D L 1. 1 BD L B D L B D L B D L 1.3 BDL B D L Te t r a c h l o r o e t h e n e 0. 7 u g / L B D L B D L BD L B D L B D L B D L B D L B D L B D L 1. 2 BD L B D L B D L B D L Vi n y l c h l o r i d e 0.0 3 u g / L B D L B D L BD L B D L B D L 2. 1 3 . 4 2 . 4 BD L 3. 1 BD L B D L B D L 1.6 Me t a l s An t i m o n y 1 u g / L 12 . 4 BD L BD L B D L B D L B D L B D L B D L B D L 5. 3 BD L B D L B D L B D L Ba r i u m 70 0 u g / L 2 0 2 6 7 3 19 6 2 8 . 6 7 . 6 2 0 1 1 8 2 1 0 6 5 0 . 7 5 9 9 1 2 . 8 1410 151 3 9 Ch r o m i u m 70 u g / L 12 . 6 BD L BD L B D L B D L B D L B D L B D L B D L B D L B D L B D L B D L B D L Co b a l t 1 u g / L B D L 32 BD L B D L B D L B D L 22 6 . 1 BD L 64 . 4 BD L B D L 25.5 BDL Ni c k e l 10 0 u g / L 8 . 8 9 . 4 5. 2 B D L B D L B D L 1 6 . 3 B D L 9 . 6 10 9 5 5 . 6 1 6 B D L TA B L E 2 SU M M A R Y O F E X C E E D A N C E S Transect 5 Tr a n s e c t 3 Tr a n s e c t 1 T r a n s e c t 4 Bo l d t e x t – e x c e e d s M C L Table 3 Analytical Methods to Monitor Natural Attenuation Analysis Method Data Use Dissolved Oxygen Field meter SM 4500 O G The most thermodynamically favored electron 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 SM 4500 S D Daughter product of sulfate reduction. May not be detected even if sulfate-reducing bacteria are active because it can react with various oxygenated chemical species and metals. Methane, ethane, ethene Bubble Strip Sampler AM 20 GAX Provide evidence of complete dechlorination of chlorinated ethenes, and ethanes. Methane also indicates activity of methanogenic bacteria. Oxidation Reduction Potential Field meter A2580B Influences and is influenced by the nature of biologically mediated degradation of contaminants. pH/ Temperature/ Conductivity Field meter Biological processes are optimal at pH range of 5 to 9/ Temp>20°C/ measure of ion concentrations. Turbidity EPA 180.1 Possible interference. Total Organic Carbon (TOC) SM 5310 B Used to classify plume and to determine if reductive dechlorination is possible. Biological Oxygen Demand (BOD) SM 5210 B Measure of the total concentration of dissolved oxygen that would eventually be demanded as plume degrades. Chemical Oxygen Demand (COD) SM 5220 D Measure of the total quantity of oxygen required to oxidize all organic material into carbon dioxide 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 Hydrogen Bubble Strip Sampler AM 20 GAX Determine type of anaerobic activity (i.e., methanogenesis, sulfate and iron reduction) Volatile Fatty Acids AM 21 G May provide insight into the types of microbial activity and serve as electron donors. EPA Biodegradation Parameters Units Analytical Result/ Screening Value Date MW‐2MW‐4MW‐6MW‐13‐132 MW‐18‐78 MW‐19‐75 MW‐19‐110 MW‐21‐21 MW‐21‐94 MW‐24‐160 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 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 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 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 1.6 0.6 0.38 0.16 0.57 0.63 0.29 0.38 3.01 Screening Value Fall 2015 ‐‐‐003300330 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 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 ‐‐‐111111121 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 ‐‐‐111111110 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 ‐‐‐222222222 Analytical Result Fall 2014 4850 3010 37200 3000 25400 ‐‐‐2600 21400 16800 209 Analytical Result Spring 2015 720 3380 34400 5010 22600 ‐‐‐1880 19800 19800 276 Analytical Result Fall 2015 94.8 3970 40700 14800 21800 8580 1660 13800 17400 92.2 Screening Value Fall 2015 ‐‐‐333333330 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 ‐‐‐222222220 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 ‐‐‐022202022 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 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 Analytical Result Fall 2014 36000 470000 550000 35000 160000 ‐‐‐24000 510000 170000 6000 Analytical Result Spring 2015 54000 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 ‐‐‐110110110 Analytical Result Fall 2014 0.0099 J 0.065 0.23 0.051 0.51 ‐‐‐0.094 0.36 1.2 0.0099 J Analytical Result Spring 2015 0.009 J 0.0087 J 0.26 0.037 0.24 ‐‐‐0.048 0.16 0.94 0.008 U Analytical Result Fall 2015 0.0063 J 0.023 0.18 0.019 0.18 0.029 0.027 0.078 0.27 0.0056 J Analytical Result Fall 2014 0.0022 J 0.23 0.52 0.099 1.6 ‐‐‐0.2 0.18 0.46 0.0078 J Analytical Result Spring 2015 0.0012 J 0.02 0.62 0.04 1.3 ‐‐‐0.13 0.13 0.75 0.0015 J Analytical Result Fall 2015 0.0011 J 0.061 0.23 0.023 0.42 0.03 0.017 0.025 0.057 0.0011 J 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 ‐‐‐333333333 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 37 170 240 0.057 Screening Value Fall 2015 ‐‐‐030300000 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 980 J 890 U 890 U 1100 J ‐‐‐890 U 890 U 1300 J 890 U Analytical Result Fall 2015 240 J 230 J 150 J 180 J 200 J 210 J 150 J 190 J 210 J 180 J 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 J66 J81 J 130 J 120 J 120 J50 U 130 J 110 J 110 J 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 J51 J 170 J93 J 110 J70 J 130 J 440 J 110 J95 J 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 J27 J19 J32 J30 J28 J14 J27 J29 J33 J 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 Analytical Result Fall 2014 1 U 1.8 1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Spring 2015 1 U 1.4 1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Fall 2015 1 U 1.2 1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Fall 2014 1 U 1.8 1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Spring 2015 1 U 1.7 1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Fall 2015 1 U 1.3 1 U1 U1 U1 U1 U1 U1 U1 U Screening Value Fall 2015 ‐‐‐200000000 Analytical Result Fall 2014 1 U 19.5 1 U 23.1 1 U1 U 1 19.7 4.9 1 U Analytical Result Spring 2015 1 U 22 1.1 23.1 1 U1 U1 U 18.2 4.1 1 U Analytical Result Fall 2015 1 U 18.7 1 U 26.6 1 U1 U1 U 11.8 3.4 1 U Screening Value Fall 2015 ‐‐‐202000220 Analytical Result Fall 2014 1 U 2.7 1 U1 U 2.2 1 U1 U 3.4 1 U1 U Analytical Result Spring 2015 1 U 2.6 1 U1 U 1.6 1 U1 U 2.5 1 U1 U Analytical Result Fall 2015 1 U 3.1 1 U1 U 1.6 1 U1 U 2.4 1 U1 U Screening Value Fall 2015 ‐‐‐200200200 Analytical Result Fall 2014 1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Spring 2015 1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U Analytical Result Fall 2015 1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U Screening Value Fall 2015 ‐‐‐000000000 Analytical Result Fall 2014 1 U1 U 4.5 1 U1 U1 U1 U 3.8 6 1 U Analytical Result Spring 2015 1 U 2.8 5.2 1 U1 U1 U1 U 3.6 5.8 1 U Analytical Result Fall 2015 1 U1 U 4.2 1 U1 U1 U 2.7 1 U 4.1 1 U Screening Value Fall 2015 ‐‐‐020002020 Analytical Result Fall 2014 2 U2 U152 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 U2 U 7.3 2 U 6.1 2 U2 U2 U 11.3 2 U Analytical Result Fall 2014 25 U36 2925 U25 U ‐‐‐25 U4825 U25 U Analytical Result Spring 2015 25 U30 4425 U25 U ‐‐‐25 U443225 Analytical Result Fall 2015 25 U25 U25 U25 U25 U25 U25 U25 U25 U25 U 19 20 19 23 13 18 17 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 nM Std. Units Sum of Screening Values m/VOxidation Reduction Potential ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Total Organic Carbon mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ug/L Vinyl chloride 1,1,1‐Trichloroethane Chloroethane BOD, 5 day Chemical Oxygen Demand Hydrogen Methane Acetic Acid Ethane Ethene cis‐1,2‐Dichloroethene Butyric Acid Lactic Acid Propionic Acid Pyruvic Acid Tetrachloroethene Trichloroethene ug/L ug/L Sulfide Sulfate Nitrogen, Nitrate Carbon Dioxide ug/LIron Chloride Alkalinity, as CaCO3 NTUTurbidity TABLE 4 EPA MNA BASLINE & SCREENING VALUES umhos/cm mg/L deg C Field pH Dissolved Oxygen Field Specific Conductance Field Temperature Old Buncombe County Landfill MNA Sampling Report APPENDIX C WELL CONDITION SUMMARY Old Buncombe County Landfill MNA Sampling Report APPENDIX D SAMPLING FORMS Page 25 of 25 Page 81 of 84 Page 82 of 84 Page 83 of 84 Page 84 of 84 Page 87 of 87 Old Buncombe County Landfill MNA Sampling Report APPENDIX E SUMMARY OF DETECTIONS 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/l Zinc 10/13/2015 14.1 ug/L Monday, February 08, 2016 Page 1 of 17 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. Site ID Analyte Date Result MW-13-132 1,1-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/l Propionic Acid 10/16/2015 32 J,H1,B,d ug/L Sulfate 10/16/2015 10500 ug/L Monday, February 08, 2016 Page 2 of 17 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. 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/l 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/l 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/l MW-17-310 Oxygen, Dissolved, Dissolved 10/14/2015 2980 ug/l Monday, February 08, 2016 Page 3 of 17 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. 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/l MW-18-78 1,1-Dichloroethane 10/14/2015 1.8 ug/L 1,4-Dichlorobenzene 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 Monday, February 08, 2016 Page 4 of 17 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. Site ID Analyte Date Result MW-19-110 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 Monday, February 08, 2016 Page 5 of 17 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. 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 Monday, February 08, 2016 Page 6 of 17 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. Site ID Analyte Date Result MW-2 Acetic Acid 10/19/2015 240 J,H1,B,d ug/L Alkalinity, Total as CaCO3 10/19/2015 50100 ug/L Barium 10/19/2015 19 ug/L Butyric Acid 10/19/2015 160 J,H1,B,d ug/L Carbon Dioxide 10/19/2015 38000 ug/L Chloride 10/19/2015 2160 ug/L Ethane 10/19/2015 0.0011 J ug/L Ethene 10/19/2015 0.0063 J ug/L Iron 10/19/2015 94.8 ug/L Lactic Acid 10/19/2015 88 J,H1,B,d ug/L Methane 10/19/2015 0.066 ug/L Nitrogen, Nitrate 10/19/2015 51.5 ug/L Oxygen, Dissolved, Dissolved 10/19/2015 4660 ug/L Propionic Acid 10/19/2015 34 J,H1,B,d ug/L Sulfate 10/19/2015 3990 ug/L Monday, February 08, 2016 Page 7 of 17 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. Site ID Analyte Date Result MW-21-21 1,1-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 Monday, February 08, 2016 Page 8 of 17 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. 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/l 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 Monday, February 08, 2016 Page 9 of 17 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. Site ID Analyte Date Result MW-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/l Propionic Acid 10/19/2015 33 J,H1,B,d ug/L Sulfate 10/19/2015 10300 ug/L Monday, February 08, 2016 Page 10 of 17 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. Site ID Analyte Date Result MW-3 1,1-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-Dichloroethene 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/l Vinyl chloride 10/15/2015 3.4 ug/L Monday, February 08, 2016 Page 11 of 17 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. Site ID Analyte 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/l Propionic Acid 10/15/2015 27 J,H1,B,d ug/L Monday, February 08, 2016 Page 12 of 17 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. Site ID Analyte Date Result MW-4 Sulfate 10/15/2015 31100 ug/L Tetrachloroethene 10/15/2015 1.2 ug/L Total Organic Carbon 10/15/2015 5120 ug/L Trichloroethene 10/15/2015 1.3 ug/L Vinyl chloride 10/15/2015 3.1 ug/L Zinc 10/15/2015 16.6 ug/L Monday, February 08, 2016 Page 13 of 17 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. 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-pentanone 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/l 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 Monday, February 08, 2016 Page 14 of 17 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. Site ID Analyte Date Result MW-5 1,4-Dichlorobenzene 10/13/2015 7.4 ug/L Barium 10/13/2015 151 ug/L Chlorobenzene 10/13/2015 11.8 ug/L Cobalt 10/13/2015 25.5 ug/L Nickel 10/13/2015 16 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 1700 ug/L Monday, February 08, 2016 Page 15 of 17 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. Site ID Analyte Date Result MW-6 1,1-Dichloroethane 10/14/2015 5.9 ug/L 1,4-Dichlorobenzene 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 Monday, February 08, 2016 Page 16 of 17 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. Site ID Analyte Date Result MW-6-192 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/l MW-B Barium 10/13/2015 201 ug/L cis-1,2-Dichloroethene 10/13/2015 3.8 ug/L Oxygen, Dissolved, Dissolved 10/13/2015 3880 ug/l Vinyl chloride 10/13/2015 2.1 ug/L Monday, February 08, 2016 Page 17 of 17 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. Detections By Date Range Buncombe County New Facility From:10/1/2015 To:10/1/2015 Site ID Analyte Date Result SW-1 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 SW-2 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 Monday, February 08, 2016 Page 1 of 4 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. 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 Monday, February 08, 2016 Page 2 of 4 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. 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 Monday, February 08, 2016 Page 3 of 4 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. Site ID Analyte 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 Monday, February 08, 2016 Page 4 of 4 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. Old Buncombe County Landfill MNA Sampling Report APPENDIX F SUMMARY OF EXCEEDANCES 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:1ug/L 10/16/2015 1.1 ug/L MW-13-35 1,4-Dichlorobenzene MCL:6ug/L 10/13/2015 45 ug/L Benzene MCL:1ug/L 10/13/2015 2.3 ug/L MW-15 Antimony MCL:1ug/L 10/13/2015 12.4 ug/L Chromium MCL:10 ug/L 10/13/2015 12.6 ug/L MW-18-78 Vinyl chloride MCL:0.03 ug/L 10/14/2015 1.6 ug/L Thursday, February 04, 2016 Page 1 of 4 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. Site ID Analyte Date Result MW-21-21 1,1-Dichloroethane MCL:6ug/L 10/15/2015 8.6 ug/L 1,4-Dichlorobenzene MCL:6ug/L 10/15/2015 10.3 ug/L Cobalt MCL:1ug/L 10/15/2015 6.1 ug/L Vinyl chloride MCL:0.03 ug/L 10/15/2015 2.4 ug/L MW-3 1,1-Dichloroethane MCL:6ug/L 10/15/2015 12 ug/L 1,4-Dichlorobenzene MCL:6ug/L 10/15/2015 9.1 ug/L Benzene MCL:1ug/L 10/15/2015 1.1 ug/L Cobalt MCL:1ug/L 10/15/2015 22 ug/L Vinyl chloride MCL:0.03 ug/L 10/15/2015 3.4 ug/L Thursday, February 04, 2016 Page 2 of 4 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. Site ID Analyte Date Result MW-4 1,1-Dichloroethane MCL:6ug/L 10/15/2015 16.7 ug/L 1,4-Dichlorobenzene MCL:6ug/L 10/15/2015 11.3 ug/L Antimony MCL:1ug/L 10/15/2015 5.3 ug/L Cobalt MCL:1ug/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 MW-4A 1,4-Dichlorobenzene MCL:6ug/L 10/16/2015 86.5 ug/L Benzene MCL:1ug/L 10/16/2015 5.3 ug/L Cobalt MCL:1ug/L 10/16/2015 32 ug/L MW-5 1,4-Dichlorobenzene MCL:6ug/L 10/13/2015 7.4 ug/L Cobalt MCL:1ug/L 10/13/2015 25.5 ug/L Thursday, February 04, 2016 Page 3 of 4 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. Site ID Analyte Date Result MW-6 Barium MCL:700 ug/L 10/14/2015 1410 ug/L Benzene MCL:1ug/L 10/14/2015 1.3 ug/L MW-B Vinyl chloride MCL:0.03 ug/L 10/13/2015 2.1 ug/L Thursday, February 04, 2016 Page 4 of 4 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. Old Buncombe County Landfill MNA Sampling Report APPENDIX G BIOCHLOR BI O C H L O R N a t u r a l A t t e n u a t i o n D e c i s i o n S u p p o r t S y s t e m Ol d B u n c o m b e Da t a I n p u t I n s t r u c t i o n s : Ve r s i o n 2 . 2 Co u n t y L a n d f i l l 11 5 1 . E n t e r v a l u e d i r e c t l y . . . . o r Ex c e l 2 0 0 0 Ru n N a m e 2 . C a l c u l a t e b y f i l l i n g i n g r a y T Y P E O F C H L O R I N A T E D S O L V E N T : Et h e n e s 5. G E N E R A L 0. 0 2 c e l l s . P r e s s E n t e r , t h e n E t h a n e s S i m u l a t i o n T i m e * 2 0 ( y r ) (T o r e s t o r e f o r m u l a s , h i t " R e s t o r e F o r m u l a s " b u t t o n ) 1. A D V E C T I O N Mo d e l e d A r e a W i d t h * 1 0 0 0 ( f t ) V a r i a b l e * D a t a u s e d d i r e c t l y i n m o d e l . Se e p a g e V e l o c i t y * V s 2 0 6 . 9 (f t / y r ) Mo d e l e d A r e a L e n g t h * 3 0 0 0 ( f t ) T e s t i f or Zo n e 1 L e n g t h * 3 0 0 0 ( f t ) B i o t r a n s f o r m a t i o n Hy d r a u l i c C o n d u c t i v i t y K 1 . 0 E - 0 3 (c m / s e c ) Zo n e 2 L e n g t h * 0 ( f t ) i s O c c u r r i n g Hy d r a u l i c G r a d i e n t i 0 . 0 4 (f t / f t ) Ef f e c t i v e P o r o s i t y n 0 . 2 (- ) 6. S O U R C E D A T A TY P E : D e c a y i n g 2. D I S P E R S I O N Si n g l e P l a n a r Al p h a x * 3 0 0 ( f t ) (A l p h a y ) / ( A l p h a x ) * 0 . 1 ( - ) S o u r c e T h i c k n e s s i n S a t . Z o n e * 7 5 ( f t ) (A l p h a z ) / ( A l p h a x ) * 1 . E - 9 9 ( - ) Y 1 3. A D S O R P T I O N Wi d t h * ( f t ) 1 0 0 0 Re t a r d a t i o n F a c t o r * R k s * o r Co n c . ( m g / L ) * C1 (1 / y r ) So i l B u l k D e n s i t y , r h o 2 . 6 ( k g / L ) P C E . 0 0 8 0 . 0 2 2 Fr a c t i o n O r g a n i c C a r b o n , f o c 1. 0 E - 3 (- ) T C E . 0 0 8 0 . 0 2 2 V i e w o f P l u m e L o o k i n g D o w n Pa r t i t i o n C o e f f i c i e n t K o c D C E . 0 0 2 0 . 0 2 2 PC E 4 2 6 ( L / k g ) 6 . 5 4 ( - ) V C . 0 0 2 0 . 0 2 2 O b s e r v e d C e n t e r l i n e C o n c . a t M o n i t o r i n g W e l l s TC E 1 3 0 ( L / k g ) 2 . 6 9 ( - ) E T H 0 . 0 2 2 DC E 1 2 5 ( L / k g ) 2 . 6 3 ( - ) VC 3 0 ( L / k g ) 1 . 3 8 ( - ) 7. F I E L D D A T A F O R C O M P A R I S O N ET H 3 0 2 ( L / k g ) 4 . 9 3 ( - ) P C E C o n c . ( m g / L ) . 0 0 2 . 0 0 1 Co m m o n R ( u s e d i n m o d e l ) * = 1 . 2 5 TC E C o n c . ( m g / L ) . 0 0 2 . 0 4. B I O T R A N S F O R M A T I O N -1 s t O r d e r D e c a y C o e f f i c i e n t * D C E C o n c . ( m g / L ) . 0 2 8 . 0 1 7 . 0 Zo n e 1  ( 1 / y r ) ha l f - l i f e ( y r s ) Y i e l d VC C o n c . ( m g / L ) 0 . 0 . 0 0 3 PC E T C E 1. 7 7 7 0. 3 9 0. 7 9 ET H C o n c . ( m g / L ) . 0 6 5 TC E D C E 1. 8 7 3 0. 3 7 0. 7 4 Dis t a n c e f r o m S o u r c e ( f t ) 10 0 4 5 0 9 2 5 DC E V C 2. 1 6 6 0. 3 2 0. 6 4 Da t e D a t a C o l l e c t e d 20 1 4 VC E T H 1. 9 8 0 0. 3 5 0. 4 5 8. C H O O S E T Y P E O F O U T P U T T O S E E : Zo n e 2  ( 1 / y r ) ha l f - l i f e ( y r s ) PC E T C E 0. 0 0 0 TC E D C E 0. 0 0 0 DC E V C 0. 0 0 0 VC E T H 0. 0 0 0 Ve r t i c a l P l a n e S o u r c e : D e t e r m i n e S o u r c e W e l l Lo c a t i o n a n d I n p u t S o l v e n t C o n c e n t r a t i o n s Paste Restore RU N CE N T E R L I N E He l p Natural Attenuation L W or RU N A R R A Y Zo n e 2 = L - Z o n e 1 C RESET So u r c e O p t i o n s SE E  HE L P Ca l c . DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 7 0 . 0 0 7 0 . 0 0 5 0 . 0 0 4 0 . 0 0 2 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 7 3 0 . 0 0 2 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 1 Ti m e : 4. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 7 0 . 0 0 7 0 . 0 0 6 0 . 0 0 5 0 . 0 0 4 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 7 0 0 . 0 0 2 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 1 Ti m e : 6. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 18 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 7 0 . 0 0 7 0 . 0 0 6 0 . 0 0 6 0 . 0 0 5 0 . 0 0 4 0 . 0 0 3 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 6 7 0 . 0 0 2 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 1 Ti m e : 8. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 3 0 0 60 0 90 0 12 0 0 18 0 0 21 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 6 0 . 0 0 7 0 . 0 0 6 0 . 0 0 6 0 . 0 0 5 0 . 0 0 4 0 . 0 0 4 0 . 0 0 3 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 Bi o t r a n s f o r m a t i o n 0. 0 0 6 4 0 . 0 0 2 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 1 Ti m e : 10 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 18 0 0 21 0 0 24 0 0 27 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 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 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 2 0 0 . 0 0 2 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 2. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Bi o t r a n s f o r m a t i o n 0. 0 0 1 9 0 . 0 0 2 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 4. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 1 8 0 . 0 0 2 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 6. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 1 8 0 . 0 0 2 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 8. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 3 0 0 60 0 90 0 12 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 1 7 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 10 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 1 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 Bi o t r a n s f o r m a t i o n 0. 0 0 1 5 0 . 0 0 1 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 16 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 18 0 0 21 0 0 24 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 Bi o t r a n s f o r m a t i o n 0. 0 0 1 4 0 . 0 0 1 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 4 0 . 0 0 3 Ti m e : 20 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To A l l 0 30 0 60 0 90 0 12 0 0 18 0 0 21 0 0 24 0 0 27 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH BI O C H L O R N a t u r a l A t t e n u a t i o n D e c i s i o n S u p p o r t S y s t e m Ol d B u n c o m b e Da t a I n p u t I n s t r u c t i o n s : Ve r s i o n 2 . 2 Co u n t y L a n d f i l l 11 5 1 . E n t e r v a l u e d i r e c t l y . . . . o r Ex c e l 2 0 0 0 Ru n N a m e 2 . C a l c u l a t e b y f i l l i n g i n g r a y T Y P E O F C H L O R I N A T E D S O L V E N T : Et h e n e s 5. G E N E R A L 0. 0 2 c e l l s . P r e s s E n t e r , t h e n E t h a n e s S i m u l a t i o n T i m e * 1 1 ( y r ) (T o r e s t o r e f o r m u l a s , h i t " R e s t o r e F o r m u l a s " b u t t o n ) 1. A D V E C T I O N Mo d e l e d A r e a W i d t h * 1 0 0 0 ( f t ) V a r i a b l e * D a t a u s e d d i r e c t l y i n m o d e l . Se e p a g e V e l o c i t y * V s 2 0 6 . 9 (f t / y r ) Mo d e l e d A r e a L e n g t h * 3 0 0 0 ( f t ) T e s t i f or Zo n e 1 L e n g t h * 3 0 0 0 ( f t ) B i o t r a n s f o r m a t i o n Hy d r a u l i c C o n d u c t i v i t y K 1 . 0 E - 0 3 (c m / s e c ) Zo n e 2 L e n g t h * 0 ( f t ) i s O c c u r r i n g Hy d r a u l i c G r a d i e n t i 0 . 0 4 (f t / f t ) Ef f e c t i v e P o r o s i t y n 0 . 2 (- ) 6. S O U R C E D A T A TY P E : D e c a y i n g 2. D I S P E R S I O N Si n g l e P l a n a r Al p h a x * 3 0 0 ( f t ) (A l p h a y ) / ( A l p h a x ) * 0 . 1 ( - ) S o u r c e T h i c k n e s s i n S a t . Z o n e * 7 5 ( f t ) (A l p h a z ) / ( A l p h a x ) * 1 . E - 9 9 ( - ) Y 1 3. A D S O R P T I O N Wi d t h * ( f t ) 1 0 0 0 Re t a r d a t i o n F a c t o r * R k s * o r Co n c . ( m g / L ) * C1 (1 / y r ) So i l B u l k D e n s i t y , r h o 2 . 6 ( k g / L ) P C E . 0 0 8 0 . 0 1 Fr a c t i o n O r g a n i c C a r b o n , f o c 1. 0 E - 3 (- ) T C E . 0 0 8 0 . 0 1 V i e w o f P l u m e L o o k i n g D o w n Pa r t i t i o n C o e f f i c i e n t K o c D C E . 0 0 2 0 . 0 1 PC E 4 2 6 ( L / k g ) 6 . 5 4 ( - ) V C . 0 0 2 0 . 0 1 O b s e r v e d C e n t e r l i n e C o n c . a t M o n i t o r i n g W e l l s TC E 1 3 0 ( L / k g ) 2 . 6 9 ( - ) E T H 0 . 0 1 DC E 1 2 5 ( L / k g ) 2 . 6 3 ( - ) VC 3 0 ( L / k g ) 1 . 3 8 ( - ) 7. F I E L D D A T A F O R C O M P A R I S O N ET H 3 0 2 ( L / k g ) 4 . 9 3 ( - ) P C E C o n c . ( m g / L ) . 0 0 8 . 0 0 1 . 0 Co m m o n R ( u s e d i n m o d e l ) * = 1 . 2 5 TC E C o n c . ( m g / L ) . 0 0 8 . 0 1 . 0 4. B I O T R A N S F O R M A T I O N -1 s t O r d e r D e c a y C o e f f i c i e n t * D C E C o n c . ( m g / L ) . 0 0 2 . 0 1 7 . 0 Zo n e 1  ( 1 / y r ) ha l f - l i f e ( y r s ) Y i e l d VC C o n c . ( m g / L ) 0 . 0 . 0 0 3 . 0 PC E T C E 0. 8 7 7 0. 7 9 0. 7 9 ET H C o n c . ( m g / L ) TC E D C E 0. 9 3 6 0. 7 4 0. 7 4 Dis t a n c e f r o m S o u r c e ( f t ) 10 0 4 5 0 9 2 5 DC E V C 1. 0 8 3 0. 6 4 0. 6 4 Da t e D a t a C o l l e c t e d 20 1 5 VC E T H 1. 5 4 0 0. 4 5 0. 4 5 8. C H O O S E T Y P E O F O U T P U T T O S E E : Zo n e 2  ( 1 / y r ) ha l f - l i f e ( y r s ) PC E T C E 0. 0 0 0 TC E D C E 0. 0 0 0 DC E V C 0. 0 0 0 VC E T H 0. 0 0 0 Ve r t i c a l P l a n e S o u r c e : D e t e r m i n e S o u r c e W e l l Lo c a t i o n a n d I n p u t S o l v e n t C o n c e n t r a t i o n s Paste Restore RU N CE N T E R L I N E He l p Natural Attenuation L W or RU N A R R A Y Zo n e 2 = L - Z o n e 1 C RESET So u r c e O p t i o n s SE E  HE L P Ca l c . DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 8 0 . 0 0 4 0 . 0 0 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 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 7 9 0 . 0 0 3 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 8 0 . 0 0 1 0 . 0 0 0 Ti m e : 1. 1 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 8 0 . 0 0 6 0 . 0 0 4 0 . 0 0 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 Bi o t r a n s f o r m a t i o n 0. 0 0 7 8 0 . 0 0 4 0 . 0 0 2 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 8 0 . 0 0 1 0 . 0 0 0 Ti m e : 2. 2 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 90 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 7 0 . 0 0 7 0 . 0 0 7 0 . 0 0 6 0 . 0 0 4 0 . 0 0 3 0 . 0 0 2 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 7 5 0 . 0 0 4 0 . 0 0 2 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 8 0 . 0 0 1 0 . 0 0 0 Ti m e : 6. 6 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 90 0 12 0 0 18 0 0 21 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) PC E 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 7 0 . 0 0 7 0 . 0 0 7 0 . 0 0 7 0 . 0 0 6 0 . 0 0 5 0 . 0 0 4 0 . 0 0 3 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 Bi o t r a n s f o r m a t i o n 0. 0 0 7 2 0 . 0 0 3 0 . 0 0 2 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 8 0 . 0 0 1 0 . 0 0 0 Ti m e : 11 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 3 0 0 60 0 90 0 12 0 0 18 0 0 21 0 0 24 0 0 27 0 0 30 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH BI O C H L O R N a t u r a l A t t e n u a t i o n D e c i s i o n S u p p o r t S y s t e m Ol d B u n c o m b e Da t a I n p u t I n s t r u c t i o n s : Ve r s i o n 2 . 2 Co u n t y L a n d f i l l 11 5 1 . E n t e r v a l u e d i r e c t l y . . . . o r Ex c e l 2 0 0 0 Ru n N a m e 2 . C a l c u l a t e b y f i l l i n g i n g r a y T Y P E O F C H L O R I N A T E D S O L V E N T : Et h e n e s 5. G E N E R A L 0. 0 2 c e l l s . P r e s s E n t e r , t h e n E t h a n e s S i m u l a t i o n T i m e * 3 0 ( y r ) (T o r e s t o r e f o r m u l a s , h i t " R e s t o r e F o r m u l a s " b u t t o n ) 1. A D V E C T I O N Mo d e l e d A r e a W i d t h * 1 0 0 0 ( f t ) V a r i a b l e * D a t a u s e d d i r e c t l y i n m o d e l . Se e p a g e V e l o c i t y * V s 2 0 6 . 9 (f t / y r ) Mo d e l e d A r e a L e n g t h * 3 0 0 0 ( f t ) T e s t i f or Zo n e 1 L e n g t h * 3 0 0 0 ( f t ) B i o t r a n s f o r m a t i o n Hy d r a u l i c C o n d u c t i v i t y K 1 . 0 E - 0 3 (c m / s e c ) Zo n e 2 L e n g t h * 0 ( f t ) i s O c c u r r i n g Hy d r a u l i c G r a d i e n t i 0 . 0 4 (f t / f t ) Ef f e c t i v e P o r o s i t y n 0 . 2 (- ) 6. S O U R C E D A T A TY P E : D e c a y i n g 2. D I S P E R S I O N Si n g l e P l a n a r Al p h a x * 3 0 0 ( f t ) (A l p h a y ) / ( A l p h a x ) * 0 . 1 ( - ) S o u r c e T h i c k n e s s i n S a t . Z o n e * 7 5 ( f t ) (A l p h a z ) / ( A l p h a x ) * 1 . E - 9 9 ( - ) Y 1 3. A D S O R P T I O N Wi d t h * ( f t ) 1 0 0 0 Re t a r d a t i o n F a c t o r * R k s * o r Co n c . ( m g / L ) * C1 (1 / y r ) So i l B u l k D e n s i t y , r h o 2 . 6 ( k g / L ) P C E . 0 0 8 0 . 0 1 Fr a c t i o n O r g a n i c C a r b o n , f o c 1. 0 E - 3 (- ) T C E . 0 0 8 0 . 0 1 V i e w o f P l u m e L o o k i n g D o w n Pa r t i t i o n C o e f f i c i e n t K o c D C E . 0 0 2 0 . 0 1 PC E 4 2 6 ( L / k g ) 6 . 5 4 ( - ) V C . 0 0 2 0 . 0 1 O b s e r v e d C e n t e r l i n e C o n c . a t M o n i t o r i n g W e l l s TC E 1 3 0 ( L / k g ) 2 . 6 9 ( - ) E T H 0 . 0 1 DC E 1 2 5 ( L / k g ) 2 . 6 3 ( - ) VC 3 0 ( L / k g ) 1 . 3 8 ( - ) 7. F I E L D D A T A F O R C O M P A R I S O N ET H 3 0 2 ( L / k g ) 4 . 9 3 ( - ) P C E C o n c . ( m g / L ) . 0 0 8 . 0 0 1 . 0 Co m m o n R ( u s e d i n m o d e l ) * = 1 . 2 5 TC E C o n c . ( m g / L ) . 0 0 8 . 0 1 . 0 4. B I O T R A N S F O R M A T I O N -1 s t O r d e r D e c a y C o e f f i c i e n t * D C E C o n c . ( m g / L ) . 0 0 2 . 0 1 7 . 0 Zo n e 1  ( 1 / y r ) ha l f - l i f e ( y r s ) Y i e l d VC C o n c . ( m g / L ) 0 . 0 . 0 0 3 . 0 PC E T C E 0. 8 7 7 0. 7 9 0. 7 9 ET H C o n c . ( m g / L ) TC E D C E 0. 9 3 6 0. 7 4 0. 7 4 Dis t a n c e f r o m S o u r c e ( f t ) 10 0 4 5 0 9 2 5 DC E V C 1. 0 8 3 0. 6 4 0. 6 4 Da t e D a t a C o l l e c t e d 20 1 5 VC E T H 1. 5 4 0 0. 4 5 0. 4 5 8. C H O O S E T Y P E O F O U T P U T T O S E E : Zo n e 2  ( 1 / y r ) ha l f - l i f e ( y r s ) PC E T C E 0. 0 0 0 TC E D C E 0. 0 0 0 DC E V C 0. 0 0 0 VC E T H 0. 0 0 0 Ve r t i c a l P l a n e S o u r c e : D e t e r m i n e S o u r c e W e l l Lo c a t i o n a n d I n p u t S o l v e n t C o n c e n t r a t i o n s Paste Restore RU N CE N T E R L I N E He l p Natural Attenuation L W or RU N A R R A Y Zo n e 2 = L - Z o n e 1 C RESET So u r c e O p t i o n s SE E  HE L P Ca l c . DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 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 Bi o t r a n s f o r m a t i o n 0. 0 0 2 0 0 . 0 0 1 0 . 0 0 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 0 0 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 3 0 . 0 0 0 Ti m e : 3. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 2 0 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 3 0 . 0 0 0 Ti m e : 6. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 90 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 0 . 0 0 0 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 1 9 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 3 0 . 0 0 0 Ti m e : 9. 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 90 0 12 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 0 Bi o t r a n s f o r m a t i o n 0. 0 0 1 9 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 3 0 . 0 0 0 Ti m e : 12 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 3 0 0 60 0 90 0 12 0 0 18 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH DI S S O L V E D C H L O R I N A T E D S O L V E N T C O N C E N T R A T I O N S A L O N G P L U M E C E N T E R L I N E ( m g / L ) a t Z = 0 Di s t a n c e f r o m S o u r c e ( f t ) VC 0 3 0 0 6 0 0 9 0 0 1 2 0 0 1 5 0 0 1 8 0 0 2 1 0 0 2 4 0 0 2 7 0 0 3 0 0 0 No D e g r a d a t i o n 0. 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 2 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 0 . 0 0 1 Bi o t r a n s f o r m a t i o n 0. 0 0 1 6 0 . 0 0 1 0 . 0 0 1 0 . 0 0 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 Mo n i t o r i n g W e l l L o c a t i o n s ( f t ) 10 0 4 5 0 9 2 5 Fi e l d D a t a f r o m S i t e 0. 0 0 2 0 . 0 0 3 0 . 0 0 0 Ti m e : 30 . 0 Y e a r s Re t u r n t o In p u t See PCE See TCE See DCE To All 0 30 0 60 0 90 0 12 0 0 18 0 0 21 0 0 24 0 0 27 0 0 30 0 0 0. 0 0 1 0. 0 1 0 0. 1 0 0 1. 0 0 0 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 C o n c e n t r a t i o n ( m g / L ) Di s t a n c e F r o m S o u r c e ( f t . ) No D e g r a d a t i o n / P r o d u c t i o n Se q u e n t i a l 1 s t O r d e r D e c a y Fi e l d D a t a f r o m S i t e To Array Lo g L i n e a r Re p l a y See VC See ETH