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HomeMy WebLinkAboutSwiftCreek_GWMReport_DIN26393_201506240Paper Report OElectronic Data -Email CD (data loaded: Yes I No) Doc/Event#: Division of Waste Management -Solid Waste Environmental Monitoring Reporting Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1 . As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water 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. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Sherrill Environmental, Inc. Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: John (Jack) Sherrill, LG Phone: _9_19_-_49_3_-_6_55_5 ____________________ _ E-mail: sherrill@nc.rr.com Facility name: Facility Address: Swift Creek Highway 301 Coal Combustion By-Products Battleboro, NC Structural Fill Nash County Environmental Status: (Check all that apply) D Initial/Background Monitoring D Detection Monitoring T e of data submitted: (Check all that apply) X Groundwater monitoring data from monitoring wells Groundwater monitoring data from private water supply wells Leachate monitoring data X Surface water monitoring data Notification attached? 0 No. No groundwater or surface water standards were exceeded. NC Landfill Rule: Facility Permit# (.0500 or .1600) DLJ Actual sampling dates (e.g., October 20-24, 2006) June 24, 2015 [8J Assessment Monitoring D Corrective Action D Methane gas monitoring data D Corrective action data (specify) D Other(specify) ~ 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. D Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I 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. Sherrill Environmental, Inc., John Sherrill, LG President 919-493-6555 Title z.ot~ 3326 Rugby Rd. Durham, NC 27707 Facility Representative Address NC PE Firm License Number (if applicable effective May 1, 2009) Do••i.e-o,.. ~/'Jnno NOTIFICATION OF EXCEEDANCE OF A REPORTING LIMIT SWIFT CREEK CCB STRUCTURAL FILL June 24, 2015 Notification TablesNotif-Detection 6-15 Summary of Environmental Samples with Detections above SWSLs Concentration SWSL MW-1S ug/L ug/L Barium 341 100 Sulfate 320,000 250,000 MW-2S Barium 179 100 MW-3 Barium 122 100 Sulfate 930,000 250,000 MW-4 Cadmium 1.5 1 Mercury 0.98 0.2 Sulfate 260,000 250,000 MW-6 Arsenic <50d 10 Barium 116 100 Lead 100 10 Sulfate 790,000 250,000 MW-7 Arsenic 68 10 Barium 176 100 Lead 311 10 Sulfate 700,000 250,000 MW-8 Arsenic 67 10 Barium 152 100 Lead 327 10 Sulfate 700,000 250,000 SW-1 None SW-2 None SW-3 None NOTIFICATION OF EXCEEDANCE OF A STANDARD SWIFT CREEK CCB STRUCTURAL FILL June 24, 2015 Notification TablesNotif-Standard 6-15 Summary of Environmental Samples with Exceedances Concentration Standard ug/L ug/L MW-1S Sulfate 320,000 250,000 MW-3 Sulfate 900,000 250,000 MW-4 Sulfate 260,000 250,000 MW-6 Arsenic <50d 10 Lead 100 15 Sulfate 790,000 250,000 MW-7 Arsenic 68 10 Lead 311 15 Sulfate 700,000 250,000 MW-8 Arsenic 67 10 Lead 327 15 Sulfate 700,000 250,000 The above listed constituents are believed to be the result of materials in the structural fill. These constituents are not detected in the surface water samples from the creek/swamp that is the receptor of groundwater from the site. These results are consistent with historical data. Assessment Monitoring Report June 24, 2015 Swift Creek Project Highway 301 Nash County Rocky Mount, North Carolina July 31, 2015 Prepared by: Sherrill Environmental, Inc. 3326 Rugby Road Durham, NC 27707 (919) 493-6555 Full Circle Solutions, Inc. Swift Creek Project 1 TABLE OF CONTENTS 1.0 INTRODUCTION 2.0 CORRECTIVE MEASURES 3.0 SITE GEOLOGY 3.1 SOIL SURVEY 3.2 MONITORING WELLS 3.3 SLUG TEST DATA (from CSA) 4.0 GROUNDWATER TABLE 5.0 SAMPLE COLLECTION 6.0 GROUNDWATER ANALYSIS 7.0 SURFACE WATER ANALYSIS 8.0 SPECIFIC CONDUCTIVITY 9.0 DISCUSSION AND SUMMARY 10.0 RECOMMENDATIONS LIST OF TABLES Table 1 Groundwater Elevations Table 2 Piezometer Data Table 3 Summary of Groundwater Analyses Table 4 Summary of Surface Water Analyses Table 5 Piezometer and Monitoring Well Summary LIST OF FIGURES Figure 1 Site Location Map Figure 1-2 Soil Survey Figure 2 Site Map Figure 3 Map of Groundwater Table (6/24/15) Figure 4 Constituents Exceeding 2L Groundwater Standards APPENDIX Laboratory Report Groundwater Sampling Field Data Work Sheets Full Circle Solutions, Inc. Swift Creek Project 2 1.0 INTRODUCTION Sherrill Environmental, Inc. (Sherrill) was contracted to perform Semi-Annual Groundwater and Surface Water Monitoring at the Swift Creek Project. The Swift Creek Project is a “Beneficial Use” fill utilizing coal combustion by-products (CCBs) in the development of a commercial property. The Project is located on the east side on US Highway 301 at Swift Creek near Battleboro, North Carolina (Figure 1). As determined by a review of historical DOT aerial photographs the property was previously developed as a motel with a restaurant (1961). A 1981 aerial photograph shows the project area to consist of the motel and restaurant with the remaining portion of the project area in agricultural use. On November 11, 1991, ReUse Technology, Inc. submitted a letter to the Solid Waste Management Section seeking approval to use coal ash as structural fill material in the development of 25 acres of commercial property along Highway 301 at Swift Creek. On December 3, 1991, the Solid Waste Section issued a letter to ReUse that stated “Based upon the information received, the project appears to meet the guidelines previously agreed to for such reuse.” In September 1992, ReUse began placement of coal ash at the site. In January 2003, the last shipment of coal ash was accepted at the site. According to records of Full Circle Solutions, Inc., a total of approximately 134,000 tons of CCBs were placed at the project. On March 23, 2003, the site had been graded, compacted, covered with an 18 inch soil cap and planted with grass seed. On November 4, 2004, the Closure Notice was forwarded to the Solid Waste Section. In March 2006, a Comprehensive Site Assessment (CSA) for the Swift Creek Project was submitted to the Solid Waste Section. In December 2006, an Assessment Monitoring Plan was submitted to the Solid Waste Section. On February 22, 2007, the Assessment Monitoring Plan was approved by the Solid Waste Section. Eight sampling events have indicated that groundwater associated with the deeper monitoring wells (MW-1D, MW-2D, MW-5D) have not shown any impact from the CCB structural fill. The deeper wells were not sampled for this sampling event. Around April 21, 2015, the upgradient monitoring wells MW-5S and MW5D, located on the west side of Highway 301, were abandoned by NC DOT contractors. The abandonment was performed for a widening of the highway. Full Circle Solutions, Inc. Swift Creek Project 3 2.0 CORRECTIVE MEASURES A corrective measure designed by Appian Consulting Engineers, P.A. consisting of a longitudinal subsurface drain along the western portion of the site was completed in January 2008. The purpose of the measure is to intercept groundwater flowing from west to east and therefore reduce the groundwater level in the area of the site. To monitor the effectiveness of the corrective measure, two piezometers (P-23 and P-24) were installed at 20 feet east and west of the cut-off drain. These piezometers monitor the effect of the cut-off drain in reducing the groundwater level at the project. The location of the cut-off drain (6” Lateral Subsurface Drain) and the piezometers are shown on the site map (Figure 2). On July 24, 2014, David Wasiela, PE, with Environmental Resource Management (ERM), performed a site inspection of the Swift Creek project. Mr. Wasiela examined the manhole that contained the discharge valve of the lateral drain system. Mr. Wasiela found the manhole to be filled with approximately 2 feet of water and the discharge valve was not observable. Mr. Wasiela reported this condition to Sherrill Environmental, Inc. Sherrill contacted Ed Braswell & Sons, Inc. (Braswell) that had originally installed the manhole and discharge valve. On August 20, 2014, Braswell pumped water out of the manhole and cleaned the interior with a high pressure water jet. Inspection of the valve indicated that it was working properly. On the outside of the manhole, they found that silt and mud had covered over the outlet, thus preventing the water from the subdrain to discharge. Braswell suggested having an engineer look at possibly moving the manhole and valve further upgradient to help prevent silt and mud from collecting in front of the outlet. 3.0 SITE GEOLOGY The site surficial geology consists of an alluvial terrace constructed by the fluvial deposition of silts, sands and gravels. The sequence coarsens downward with some coarse sand with gravel present near the base. The terrace deposit overlies the massive and extensive Yorktown Formation. The Yorktown Formation is Pliocene in age and was deposited in the Pliocene Yorktown Sea that covered the entire coastal plain and the eastern most portions of the Piedmont. Depositional environments were back barrier lagoons, shallow inner-bay and estuarine environments and on the open shallow shelf (The Geology of the Carolinas, Horton and Zullo, 1991). The Yorktown in the region of the site is generally described as blueish-gray fine to very fine, silty sands, sandy silt or silty clay, well-sorted and very shelly. Full Circle Solutions, Inc. Swift Creek Project 4 3.1 SOIL SURVEY Figure 1-2 shows the location of the site on Sheet 1 of the Soil Survey of Nash County produced by the US Department of Agriculture, Soil Conservation Service. The soils underlying the coal ash fill project are largely Altavista with a smaller portion of Norfolk in the area of higher topography on the southern end of the site. Altavista soils are alluvial deposits that formed on flood plains. These old flood plains were erosionally dissected and the remaining terrace areas are now topographically higher than the surrounding stream and swamps. The seasonal high water table for Altavista is 1.5 to 2.5 feet below the top of the soil surface and occurs during December through March. The Soil Survey describes Altavista sandy loam (AaA) as moderately well drained and nearly level to gently sloping. It is on low terraces along large streams. Typically, the surface layer is grayish brown sandy loam 12 inches thick. The next layer, to a depth of 14 inches is olive yellow sandy loam that has yellow mottles. The subsoil extends to a depth of 44 inches. It is yellow sandy clay loam in the upper part. The middle part is yellowish brown clay loam that has mottles of light gray, red, and yellowish red. The lower part of the subsoil is light yellowish brown clay loam that has mottles of red, yellowish red, strong brown and light gray. The underlying material to a depth of 60 inches is mottled brownish yellow, light gray, strong brown and yellowish red sandy clay loam. Permeability tests on site samples of the Altavista subsoil were performed by Geotechnologies, Inc. in April 2003. Permeability values for the three samples ranged from 1E-7 cm/sec to 7E-8 cm/sec. This information was presented in Sherrill’s “Site Investigation” report prepared in May 2003. The Norfolk soils underlie the site along the western and southern sides in the topographically higher portions of the site. The percentage of Norfolk soil underlying the coal ash fill is relatively small compared to the Altavista. The seasonal high water table for Norfolk is 4 to 6 feet below ground surface and occurs during January through March. The Soil Survey describes Norfolk loamy sand (NoB) as well drained and gently sloping. It is on convex ridges and side slopes of the Coastal Plain uplands. Typically the surface layer is grayish brown loamy sand about 10 inches thick. The subsurface layer is very pale brown sandy loam to a depth of about 19 inches. The subsoil extends to a depth of at least 79 inches. It is brownish yellow sandy clay loam in the upper part. The middle part is brownish yellow sandy clay loam that has red and very pale brown mottles, and the lower part is a mottled brownish yellow, yellow, red and gray sandy loam. Full Circle Solutions, Inc. Swift Creek Project 5 3.2 MONITORING WELLS A total of 11 monitoring wells are located around the perimeter of the Swift Creek Project (Figure 2). Monitoring wells MW-1S (shallow) and MW-1D (deep) are paired monitoring wells located near the center of the project approximately 25 feet east from the edge of the CCB fill. The MW-1S is completed in alluvial sediments and MW-1D is completed in the deeper marine sediments of the Yorktown Formation. The paired monitoring wells MW-2S (shallow) and MW-2D (deep) are constructed similar to the MW-1 pair. The MW-2 pair is located on a roadway constructed into the swamp and is approximately 160 feet downgradient from the edge of the CCB fill and 135 feet downgradient of MW-1S and MW-1D. Another paired monitoring well set, MW-5S (shallow) and MW-5D (deep), were located upgradient of the Swift Creek Project on the west side of US Highway 301. These wells were abandoned by NC DOT contractors in 2015 for a widening of the highway. The construction of this monitoring well set was similar with the shallow well screened in alluvial sandy sediments and the deeper well screened in the massive marine sediments. Monitoring wells MW-3, MW-4, MW-6, MW-7 and MW-8 are shallow wells located at the southeast, southwest, northwest and northeast corners of the project. The borings were advanced through the alluvial material until the underlying marine unit was encountered as determined by split-spoon sampling. The alluvial material varied from a silty fine sand and clayey silty fine sand in the upper portion that generally coarsened downward. Borings at MW-5S, MW-6, MW-7 and MW-8 encountered medium to coarse quartz sand above the contact with the underlying marine unit. All of the eleven borings were completed using 2-inch schedule 40 PVC with 10-foot slotted screens. The monitoring wells were completed with stick-up casing and 4-inch schedule 40 PVC protective casings with lockable caps. 3.3 SLUG-TEST ANALYSIS (From March 2006 CSA) On January 8, 2006, Sherrill performed single-well slug-tests at the site on the shallow monitoring wells MW-2S, MW-5S and MW-7 and the deep monitoring wells MW-2D and MW-5D. The tests were performed by pumping water from the monitoring well and then recording the rate of recovery (rising head). The data was analyzed using the US Geological Survey, Open-File Report 02-197 Documentation of Spreadsheets for the Analysis of Aquifer-Test and Slug-Test Data. The Bouwer and Rice method was chosen for analysis of the data. Full Circle Solutions, Inc. Swift Creek Project 6 The analysis of the data revealed a large contrast in the hydraulic conductivity of the two geologic units. The overlying alluvial terrace deposit consisted of layers and mixtures of silt, clay, fine sand, medium sand, coarse sand and gravel. The terrace deposit at the site ranged in thickness from approximately 16 feet at the southwest (MW-4) and thinned towards the swamp to a thickness of approximately 8 feet (MW-2S). The percentage of sand and the grain size appeared to increase at lower elevations to the north and northeast (MW-6 and MW-7). The bottoms of the shallow monitoring well were placed at the contact with the top of the marine sediments and screen the lower 10 feet of the alluvial material. Hydraulic conductivities (K) of the tests conducted for MW-1S and MW-5S were very similar and ranged from 0.34 to 0.43 feet per day (1.2E-4 to 1.5E-4 cm/sec). Hydraulic conductivity of the test conducted for MW-7, which has 6 feet of clean sand, was 1.40 feet per day (4.8 E-04 cm/sec). The deep monitoring wells, MW-1D and MW-5D are screened approximately 10 to 20 feet below the top of the marine sediments. The marine sediments are part of the Yorktown Formation and consist of a massive and uniformed, very shelly, greenish-gray silty very fine sand. Hydraulic conductivities for the deep wells were similar and ranged from 0.0017 to 0.0026 feet per day (6.1E-7 to 9.0E-7 cm/sec) and averaged 0.0022 feet per day (7.6E-7 cm/sec). Seepage velocities were calculated for groundwater movement in the west to east direction with data from MW-5S and MW-2S for alluvial material and MW-5D and MW- 2D for marine sediments (Table 3). Seepage velocities were estimated at 0.0166 feet per day for alluvial material and 0.00009 feet per day for marine sediments. 4.0 GROUNDWATER TABLE The average groundwater elevation as measured in the shallow site monitoring wells from 2005 to 2015 is 91.51 feet with a standard deviation of 0.95 feet. The average water elevation as measured in piezometers screened in the coal ash fill (P-12 through P-20) from 2005 to 2015 is 96.01 feet with a standard deviation of 2.04 feet. The average surface water level measured at the Lane Swamp Bridge is 89.76 feet with a standard deviation of 0.63 feet. Surface water levels in Lane Swamp can be affected by beaver activity. Full Circle Solutions, Inc. Swift Creek Project 7 The corrective measure of the longitudinal subsurface drain along the western portion of the site was completed in January 2008. The corrective measure did not appear to have a significant effect on lowering the site groundwater table but appears to have reduced the amount of fluctuation. Before the drain was installed the average shallow groundwater elevation was 91.15 feet with a standard deviation of 1.66 feet. After installation of the drain, the average shallow groundwater elevation was 91.66 feet with a standard deviation of 0.72 feet. The longitudinal subsurface drain did not appear to have an effect on the water elevations in the CCB fill. The difference in the water elevation in the CCB fill and the elevation of the shallow groundwater table suggests that they are not connected. The separation is; however, not complete as evident from the detection of CCB related contaminants in the shallow groundwater table. A map of the shallow groundwater table is shown on Figure 3. The map shows that the shallow groundwater flow is in an east northeast direction. 5.0 SAMPLE COLLECTION On June 24, 2015, the site monitoring wells were sampled using low-flow sampling procedures and a peristaltic pump. The indicator field parameters of pH, temperature, specific conductivity, dissolved oxygen and oxidation/reduction potential (ORP) were measured using a flow-through-cell and a YSI multi-parameter meter. Turbidity measurements were taken with a Hach meter. Measurements were recorded on groundwater sampling field data work sheets which are included in the Appendix. Samples were collected into laboratory prepared glassware, placed in an iced cooler and transferred to Enco Laboratories in Cary, North Carolina. Groundwater samples were analyzed for the Division’s requested parameters of sulfate and total RCRA metals. 82.00 84.00 86.00 88.00 90.00 92.00 94.00 96.00 98.00 100.00 102.00 12 / 1 / 0 5 6/ 1 / 0 6 12 / 1 / 0 6 6/ 1 / 0 7 12 / 1 / 0 7 6/ 1 / 0 8 12 / 1 / 0 8 6/ 1 / 0 9 12 / 1 / 0 9 6/ 1 / 1 0 12 / 1 / 1 0 6/ 1 / 1 1 12 / 1 / 1 1 6/ 1 / 1 2 12 / 1 / 1 2 6/ 1 / 1 3 12 / 1 / 1 3 6/ 1 / 1 4 12 / 1 / 1 4 6/ 1 / 1 5 12 / 1 / 1 5 El e v a t i o n s Water Elevations Mean Water Level in Ash Mean Shallow Groundwater Level Mean Water Level In Lane Swamp Full Circle Solutions, Inc. Swift Creek Project 8 6.0 GROUNDWATER ANALYSIS The analytical results for this and the previous groundwater sampling event are summarized on Table 3 and the laboratory report is included in the Appendix. Exceedances of the NCAC 2L Groundwater Standard were detected in the groundwater samples from the shallow monitoring wells MW-1S, MW-3, MW-4, MW-6, MW-7 and MW-8 (Figure 4). No exceedance of the 2L Groundwater Standard was detected in the groundwater samples from the shallow downgradient monitoring well MW-2S located in the swamp. The analytical laboratory (Enco) reported that samples for MW-1S, MW-3, MW-6, MW-7 and MW-8 were diluted due to matrix interference. This resulted in elevated reporting limits for the RCRA metals. Arsenic – The 2L Standard for arsenic is 0.010 mg/L. Arsenic was detected in two groundwater samples. Arsenic was less than the detection limit of 0.05 mg/L at MW-6, 0.068 mg/L at MW-7 and 0.067 mg/L at MW-8. Cadmium – The 2L Standard for cadmium is 0.002. Cadmium was detected in a concentration of 0.0015 mg/L in the sample from MW-4. Lead – The 2L Standard for lead is 0.015 mg/L. Lead concentrations that exceeded the 2L Standard have typically been limited to the northeast portion of the site. Lead concentrations were 0.100 mg/L at MW-6, 0.311 mg/L at MW-7 and 0.327 mg/L at MW-8. Mercury – The 2L Standard for mercury is 0.001 mg/L. Mercury was detected in a concentration of 0.00098 mg/L in the sample from MW-4. Sulfate – The 2L Standard for sulfate is 250 mg/L. Concentrations of sulfate were detected above the 2L Standard in all of the downgradient shallow perimeter monitoring wells. Sulfate concentrations in the southern wells were 320 mg/L at MW-1S, 930 mg/L at MW-3 and 260 mg/L at MW-4. Sulfate concentrations in the northern wells were 790 mg/L at MW-6, 700 mg/L at MW-7 and 700 mg/L at MW-8. Barium – The 2L Standard for barium is 0.700 mg/L. Barium was detected above the NC Solid Waste Section Limit (SWSL) of 0.100 mg/L in samples from 6 of the monitoring wells. None of the concentrations of barium exceeded the 2L Standard. Full Circle Solutions, Inc. Swift Creek Project 9 7.0 SURFACE WATER ANALYSIS The analytical results for this and the previous surface water sampling events are summarized on Table 4. No RCRA metals were detected in exceedance of the 2B Surface Standard or above the NC Solid Waste Section Limit (SWSL). Sulfate concentrations were less than 5.0 mg/L. In summary, surface water analysis did not identify any contamination. Full Circle Solutions, Inc. Swift Creek Project 10 9.0 DISCUSSION AND SUMMARY Exceedances of the 2L Groundwater Standard were detected in the samples from monitoring wells MW-1S, MW-3, MW-4, MW-6, MW-7 and MW-8. These wells monitor shallow groundwater downgradient of the CCB fill. No exceedance of a 2L Standard was detected at MW-2S. The deeper monitoring wells (MW-1D and MW-2D) were not sampled as it has been demonstrated that they are not in connection with the shallow site contamination. The corrective measure of the longitudinal subsurface drain along the western portion of the site was completed in January 2008. The water elevations in the ash fill appear to have risen since the installation of the corrective measure. The elevation of groundwater appears to be approximately the same with a lower standard deviation suggesting that the subsurface drain has served to reduce site groundwater fluctuation. This data suggests a separation between the CCB fill and the shallow groundwater table. The separation is, however, not complete as evident from the detection of ash related contaminants in the shallow groundwater table. This information also suggests that the source of the water present in the CCB fill is from on-site precipitation. The principal site groundwater contaminants are arsenic, lead and sulfate. The highest concentrations are typically detected at MW-6, MW-7and MW-8. The following are charts of the concentrations over the monitoring record. 0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 6/ 1 / 0 7 12 / 1 / 0 7 6/ 1 / 0 8 12 / 1 / 0 8 6/ 1 / 0 9 12 / 1 / 0 9 6/ 1 / 1 0 12 / 1 / 1 0 6/ 1 / 1 1 12 / 1 / 1 1 6/ 1 / 1 2 12 / 1 / 1 2 6/ 1 / 1 3 12 / 1 / 1 3 6/ 1 / 1 4 12 / 1 / 1 4 6/ 1 / 1 5 12 / 1 / 1 5 mg / L ( p p m ) ARSENIC MW-6 MW-7 MW-8 Full Circle Solutions, Inc. Swift Creek Project 11 In summary, some shallow groundwater contamination is present adjacent and downgradient of the CCB fill. The contamination appears limited vertically as has been shown by no contaminants detected in the deeper monitoring wells. The contamination appears limited to the east side of Highway 301 as no contaminants have been detected in the upgradient shallow and deep pair of monitoring wells MW-5S and MW-5D on the west side of Highway 301, prior to their abandonment this year. The direction of groundwater flow is to the east and northeast. No contamination has been detected at MW-2S or MW-2D which are located on a roadway constructed into the swamp and is approximately 160 feet downgradient from the edge of the CCB fill. The shallow groundwater associated with the site is likely to discharge to the surface water of Lane 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 6/ 1 / 0 7 12 / 1 / 0 7 6/ 1 / 0 8 12 / 1 / 0 8 6/ 1 / 0 9 12 / 1 / 0 9 6/ 1 / 1 0 12 / 1 / 1 0 6/ 1 / 1 1 12 / 1 / 1 1 6/ 1 / 1 2 12 / 1 / 1 2 6/ 1 / 1 3 12 / 1 / 1 3 6/ 1 / 1 4 12 / 1 / 1 4 6/ 1 / 1 5 12 / 1 / 1 5 mg / L ( p p m ) LEAD MW-6 MW-7 MW-8 0 100 200 300 400 500 600 700 800 900 6/ 1 / 0 7 12 / 1 / 0 7 6/ 1 / 0 8 12 / 1 / 0 8 6/ 1 / 0 9 12 / 1 / 0 9 6/ 1 / 1 0 12 / 1 / 1 0 6/ 1 / 1 1 12 / 1 / 1 1 6/ 1 / 1 2 12 / 1 / 1 2 6/ 1 / 1 3 12 / 1 / 1 3 6/ 1 / 1 4 12 / 1 / 1 4 6/ 1 / 1 5 12 / 1 / 1 5 mg / L ( p p m ) SULFATE MW-6 MW-7 MW-8 Full Circle Solutions, Inc. Swift Creek Project 12 Creek Swamp and the Swift Creek Swamp. Analysis of surface water samples has not indicated any contamination. No receptors are identifiable for this site and the low level of contamination attenuates as it migrates from the project area into the adjacent swamp. 10.0 RECOMMENDATIONS Sherrill recommends continuing with the Assessment Monitoring. The next quarterly event for measuring water levels is scheduled for September 2015. The next semiannual event for measuring water levels and collecting groundwater and surface water samples is scheduled for December 2015. Sherrill recommends that an inspection of the manhole/valve box associate with the corrective measure of the lateral drain be conducted to insure that it is functioning properly. TABLES TABLE 1 GROUNDWATER ELEVATIONSSWIFT CREEK PROJECT Sherrill Environmental, Inc. C:\S E I\ReUse\Swift Creek\Assessment Monitoring\Tables\GW Analysis 2015Table 1B MW-1S MW-3 MW-4 MW-6 MW-7 Average MW-2S MW-5S MW-8 MW-1D MW-2D MW-5D Lane Swamp TOC ELV.99.54 102.15 106.06 98.41 98.63 94.87 102.68 95.42 99.90 95.22 102.67 92.25 12/1/2005 8.21 9.65 11.24 7.17 7.63 4.72 6.01 8.57 4.70 6.40GW ELV.91.33 92.50 94.82 91.24 91.00 92.18 90.15 96.67 91.33 90.52 96.271/8/2006 8.11 9.48 10.15 7.18 7.74 NM 5.86 8.28 NM 5.68GW ELV.91.43 92.67 95.91 91.23 90.89 92.43 96.82 91.62 96.99 6/9/2006 8.69 10.32 11.41 7.74 8.66 4.83 6.94 9.05 4.87 6.84 GW ELV.90.85 91.83 94.65 90.67 89.97 91.59 90.04 95.74 90.85 90.35 95.834/4/2007 7.80 9.31 9.96 7.28 7.80 4.40 6.12 4.84 8.18 4.75 5.96GW ELV.91.74 92.84 96.10 91.13 90.83 92.53 90.47 96.56 90.58 91.72 90.47 96.718/21/2007 10.89 11.40 13.28 10.80 10.71 6.77 9.57 7.67 11.30 6.82 9.42 GW ELV.88.65 90.75 92.78 87.61 87.92 89.54 88.10 93.11 87.75 88.60 88.40 93.25 10/21/2007 11.40 12.98 14.06 11.90 11.41 7.31 10.62 8.30 11.76 7.43 10.63GW ELV.88.14 89.17 92.00 86.51 87.22 88.61 87.56 92.06 87.12 88.14 87.79 92.041/31/2008 9.13 10.70 14.11 8.44 8.71 4.86 7.65 5.57 9.42 5.02 8.11GW ELV.90.41 91.45 91.95 89.97 89.92 90.74 90.01 95.03 89.85 90.48 90.20 94.56 3/22/2008 8.10 9.18 13.28 7.18 7.79 4.40 6.98 4.78 8.44 4.54 7.34 2.51 GW ELV.91.44 92.97 92.78 91.23 90.84 91.85 90.47 95.70 90.64 91.46 90.68 95.33 89.746/17/2008 9.12 10.54 14.05 8.36 9.06 5.03 8.93 6.09 9.42 5.23 8.92 3.20GW ELV.90.42 91.61 92.01 90.05 89.57 90.73 89.84 93.75 89.33 90.48 89.99 93.75 89.059/4/2008 9.26 10.98 14.82 8.92 9.06 4.58 10.87 5.97 9.47 5.02 10.72 3.10 GW ELV.90.28 91.17 91.24 89.49 89.57 90.35 90.29 91.81 89.45 90.43 90.20 91.95 89.15 1/13/2009 8.22 9.35 13.41 7.02 7.60 4.26 7.16 4.58 8.55 4.46 7.54 2.52GW ELV.91.32 92.80 92.65 91.39 91.03 91.84 90.61 95.52 90.84 91.35 90.76 95.13 89.733/31/2009 7.60 6.74 12.43 6.81 7.20 4.36 5.98 4.21 7.96 4.38 6.22 2.50GW ELV.91.94 95.41 93.63 91.60 91.43 92.80 90.51 96.70 91.21 91.94 90.84 96.45 89.75 6/23/2009 8.62 10.06 13.86 7.72 8.52 4.41 9.83 5.56 8.92 4.77 9.63 2.90 GW ELV.90.92 92.09 92.20 90.69 90.11 91.20 90.46 92.85 89.86 90.98 90.45 93.04 89.359/30/2009 8.86 10.82 14.70 8.08 8.51 4.64 10.40 5.50 9.18 5.00 10.26 3.15GW ELV.90.68 91.33 91.36 90.33 90.12 90.76 90.23 92.28 89.92 90.72 90.22 92.41 89.1012/15/2009 7.54 8.68 12.85 6.78 7.13 4.22 6.30 4.21 NM NM NM 2.60 GW ELV.92.00 93.47 93.21 91.63 91.50 92.36 90.65 96.38 91.21 89.65 3/31/2010 7.37 8.64 12.52 6.77 7.93 2.42 5.80 3.96 7.74 4.46 6.19 2.14GW ELV.92.17 93.51 93.54 91.64 90.70 92.31 92.45 96.88 91.46 92.16 90.76 96.48 90.116/29/2010 9.35 10.66 14.62 9.21 9.25 4.94 9.97 6.31 NM NM NM 3.35GW ELV.90.19 91.49 91.44 89.20 89.38 90.34 89.93 92.71 89.11 88.90 9/28/2010 9.23 11.55 14.80 9.11 8.52 4.80 10.85 5.48 10.05 5.50 11.10 4.10 GW ELV.90.31 90.60 91.26 89.30 90.11 90.32 90.07 91.83 89.94 89.85 89.72 91.57 88.1512/13/2010 8.54 10.12 14.02 7.37 7.93 4.36 8.72 4.81 NM NM NM 2.02GW ELV.91.00 92.03 92.04 91.04 90.70 91.36 90.51 93.96 90.61 90.233/28/2011 8.03 9.17 13.32 7.25 7.53 4.35 7.45 4.42 8.42 4.67 7.84 2.85 GW ELV.91.51 92.98 92.74 91.16 91.10 91.90 90.52 95.23 91.00 91.48 90.55 94.83 89.40 6/26/2011 10.05 11.23 14.82 9.20 9.98 6.02 10.59 7.04 10.35 6.32 10.43 2.85GW ELV.89.49 90.92 91.24 89.21 88.65 89.90 88.85 92.09 88.38 89.55 88.90 92.24 89.409/28/2011 7.84 8.90 13.09 7.13 7.71 4.24 7.62 4.83 NM NM NM 2.20GW ELV.91.70 93.25 92.97 91.28 90.92 92.02 90.63 95.06 90.59 90.05 12/18/2011 8.00 8.88 13.10 6.98 7.53 4.32 7.35 4.47 8.35 4.65 7.70 1.80 GW ELV.91.54 93.27 92.96 91.43 91.10 92.06 90.55 95.33 90.95 91.55 90.57 94.97 90.453/23/2012 8.01 8.89 13.01 7.03 7.75 4.31 7.35 4.80 8.35 4.56 7.66 1.65GW ELV.91.53 93.26 93.05 91.38 90.88 92.02 90.56 95.33 90.62 91.55 90.66 95.01 90.606/28/2012 8.39 9.40 13.38 7.42 8.45 4.65 8.52 5.63 8.72 4.92 8.54 1.95 GW ELV.91.15 92.75 92.68 90.99 90.18 91.55 90.22 94.16 89.79 91.18 90.30 94.13 90.30 9/18/2012 7.41 8.21 12.73 6.82 7.37 4.16 7.21 4.51 7.86 4.50 7.45 1.52GW ELV.92.13 93.94 93.33 91.59 91.26 92.45 90.71 95.47 90.91 92.04 90.37 95.22 90.7312/17/2012 8.04 9.19 13.36 6.82 7.37 NM 8.55 4.51 8.44 NM 8.76 1.45GW ELV.91.50 92.96 92.70 91.59 91.26 92.00 94.13 90.91 91.46 93.91 90.80 3/26/2013 7.87 8.71 12.84 7.08 7.26 4.23 7.03 4.22 8.13 4.46 7.38 2.05 GW ELV.91.67 93.44 93.22 91.33 91.37 92.21 90.64 95.65 91.20 91.77 90.41 95.29 90.206/25/2013 8.00 9.05 12.97 7.05 7.70 4.18 6.92 4.69 8.34 4.57 7.44 2.45GW ELV.91.54 93.10 93.09 91.36 90.93 92.00 90.69 95.76 90.73 91.56 90.30 95.23 89.809/26/2013 8.38 9.57 13.65 8.75 8.19 4.32 9.50 5.25 8.67 4.71 9.50 3.05 GW ELV.91.16 92.58 92.41 89.66 90.44 91.25 90.55 93.18 90.17 91.23 90.16 93.17 89.20 12/4/2013 8.30 9.59 14.13 7.47 7.80 4.31 8.48 4.82 8.59 4.72 8.70 2.85GW ELV.91.24 92.56 91.93 90.94 90.83 91.50 90.56 94.20 90.60 91.31 90.15 93.97 89.403/28/2014 7.74 8.56 12.53 6.92 7.23 4.33 6.68 4.39 8.03 4.54 7.03 1.85GW ELV.91.80 93.59 93.53 91.49 91.40 92.36 90.54 96.00 91.03 91.87 90.33 95.64 90.40 6/27/2014 8.43 9.69 13.93 8.33 8.54 4.45 7.78 5.60 8.74 4.80 8.80 2.95 GW ELV.91.11 92.46 92.13 90.08 90.09 91.17 90.42 94.90 89.82 91.16 90.07 93.87 89.309/26/2014 7.82 8.62 13.81 7.10 7.36 3.91 6.68 4.40 8.20 4.28 7.33 1.95GW ELV.91.72 93.53 92.25 91.31 91.27 92.02 90.96 96.00 91.02 91.70 90.59 95.34 90.3012/17/2014 7.88 9.01 13.71 7.24 7.40 4.22 7.94 4.34 8.30 4.53 7.46 2.10 GW ELV.91.66 93.14 92.35 91.17 91.23 91.91 90.65 94.74 91.08 91.60 90.34 95.21 90.15 3/13/2015 7.75 8.46 12.80 7.07 7.05 4.40 6.26 4.28 8.02 4.55 5.67 2.10GW ELV.91.79 93.69 93.26 91.34 91.58 92.33 90.47 96.42 91.14 91.88 90.32 97.00 90.156/24/2015 8.72 10.04 14.34 8.18 8.55 4.40 5.57 8.98 4.80 5.67 2.10GW ELV.90.82 92.11 91.72 90.23 90.08 90.99 90.47 89.85 90.92 90.07 97.00 90.15 Average Groundwater Elevation 91.50 94.72 Average GW Elv. At MW-5S (upgradient) Standard Deviation (12/1/05-12/17/14)0.94 1.62 Standard DeviationAverage Groundwater Elevation 91.15 Average SW Elv at Lane Swamp 89.79 Standard Deviation (12/1/05-10/21/07)1.66 Standard Deviation 0.62 Average Groundwater Elevation 91.66Standard Deviation (1/13/09-6/24/15)0.72 Shallow On-Site Wells Shallow Off-Site Wells Deep Wells TABLE 2 PIEZOMETER WATER ELEVATIONS SWIFT CREEK PROJECT P-12 P-13 P-14 P-15 P-16 P-17 P-18 P-19 P-20 Average St. Dev. 12/1/05 96.00 96.71 93.08 93.83 93.64 94.23 95.12 98.41 94.61 95.07 1.70 6/10/06 95.93 97.23 91.60 92.19 92.89 93.80 95.51 97.82 94.66 94.63 2.19 9/25/06 97.92 98.89 93.43 94.75 94.16 95.11 97.04 99.56 95.24 96.23 2.19 8/21/07 93.11 95.09 88.16 90.18 88.59 93.67 94.80 93.20 92.10 2.74 10/22/07 91.60 93.45 87.67 87.09 87.69 93.07 93.11 91.54 90.65 2.72 1/31/08 94.47 94.43 89.93 92.15 91.13 93.96 93.33 94.93 94.20 93.17 1.72 3/22/08 97.84 98.56 95.17 96.47 95.00 94.93 95.64 102.24 96.27 96.90 2.37 6/17/08 96.04 97.04 92.68 91.66 93.58 94.14 94.99 99.23 95.25 94.96 2.30 9/4/08 94.89 95.19 90.66 90.96 NM 90.47 93.49 96.38 94.50 93.32 2.31 1/13/09 98.13 97.35 95.16 97.08 94.60 95.03 94.62 99.50 96.11 96.40 1.73 3/31/2009 100.94 101.09 96.72 98.12 95.58 95.29 96.51 104.45 96.98 98.41 3.09 6/23/2009 97.57 96.99 92.92 94.13 93.38 94.56 94.73 98.09 95.06 95.27 1.85 9/30/09 95.89 95.45 92.54 94.91 NM 94.43 93.35 95.56 94.73 94.61 1.15 12/15/09 100.42 100.53 96.16 98.51 NM 95.26 96.07 103.01 97.10 98.38 2.72 3/31/10 101.67 101.87 97.14 98.42 95.50 95.21 97.56 104.41 96.94 98.75 3.18 6/29/10 95.92 96.69 91.76 91.22 92.45 93.08 94.61 97.84 94.80 94.26 2.29 9/28/10 94.10 97.85 95.30 93.09 93.70 93.14 94.71 94.32 93.90 94.46 1.45 12/14/10 95.64 95.89 92.48 93.34 92.80 93.81 94.26 97.08 94.70 94.44 1.53 3/28/11 98.46 99.46 94.73 96.70 94.20 95.00 96.63 101.26 96.03 96.94 2.36 6/26/11 95.38 96.21 91.10 90.56 91.80 89.86 94.38 97.27 94.57 93.46 2.68 9/28/11 98.74 99.34 94.32 96.40 95.03 96.78 100.43 96.12 97.15 2.15 12/18/11 99.29 100.49 94.23 96.41 95.01 97.14 101.12 96.00 97.46 2.56 3/23/12 99.66 100.86 94.74 96.59 95.09 97.65 102.03 96.47 97.89 2.69 6/29/12 98.84 99.58 94.07 95.69 94.93 96.70 100.51 96.03 97.04 2.33 9/18/12 100.19 101.15 94.86 96.88 95.19 98.01 103.01 96.79 98.26 2.92 12/18/12 97.83 98.04 93.09 94.22 94.61 95.85 99.29 95.20 96.02 2.16 3/26/13 100.04 101.97 94.93 97.13 95.06 97.73 102.13 96.35 98.17 2.89 6/25/13 98.90 98.33 94.20 96.21 95.02 95.61 99.51 95.68 96.68 1.96 9/26/13 97.69 97.14 92.90 94.80 94.77 95.13 97.93 94.99 95.67 1.75 12/4/13 98.01 97.17 93.95 95.80 94.96 94.94 97.96 95.14 95.99 1.53 3/28/14 100.84 103.15 95.86 97.91 95.18 98.50 103.99 97.09 99.07 3.27 6/27/14 97.81 98.01 92.53 94.14 94.11 95.56 98.81 95.15 95.77 2.23 9/26/14 99.22 98.67 94.74 97.96 95.15 95.88 99.38 95.69 97.09 1.92 12/17/14 98.51 98.61 94.90 97.41 95.05 95.94 99.66 95.67 96.97 1.82 3/13/15 101.41 103.23 97.25 98.95 95.33 98.90 105.13 97.56 99.72 3.29 6/24/14 96.00 96.64 91.91 94.15 93.66 94.79 97.24 94.77 94.90 1.72 Average 96.01 2.04 Average Water Elevation in Ashfill (12/05 to 10/07)93.74 Standard Deviation 2.29 Average Water Elevation in Ashfill (3/08 to 6/15)96.48 Standard Deviation 1.70 TABLE 3 SUMMARY OF GROUNDWATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium ChromiumLead Selenium Silver Mercury Sulfate NCAC 2L Std.0.01 0.7 0.002 0.01 0.015 0.02 0.02 0.001 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 250 MW-1S 6/7/04 0.028 0.190 <0.001 <0.01 0.068 <0.01 <0.01 <0.0002 490 12/1/05 0.020 0.170 <0.001 <0.01 0.042 <0.01 <0.01 <0.0002 608 6/10/06 0.012 0.472 <0.001 <0.01 0.052 <0.01 <0.01 0.00064 740 4/5/07 <0.01 0.458 <0.001 <0.01 <0.010 <0.01 <0.01 0.00047 420 11/15/07 <0.01 0.529 <0.001 <0.01 0.031 <0.01 <0.01 0.00089 520 6/18/08 <0.01 0.619 <0.001 <0.01 0.011 <0.01 <0.01 0.00051 470 1/14/09 <0.01 0.416 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 210 6/24/09 <0.01 0.412 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 220 12/16/09 <0.01 0.256 0.001 <0.01 <0.010 0.022 <0.01 <0.0002 160 6/30/10 0.012 0.691 0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 280 12/14/10 <0.01 0.599 0.003 <0.01 <0.010 <0.01 <0.01 <0.0002 400 6/27/11 <0.10 0.475 <0.01 <0.10 <0.10 <0.10 <0.10 <0.00028 590 12/19/11 <0.050 0.422 <0.005 <0.050 <0.050 <0.050 <0.050 <0.0002 170 6/29/12 <0.01 0.419 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 150 12/18/12 0.018 0.567 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 180 6/25/13 <0.01 0.174 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 75 12/4/13 <0.01 0.163 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 99 6/27/14 <0.01 0.250 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 110 12/17/14 <0.01 0.408 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 310 6/24/15 <0.050 0.341 <0.005 <0.050 <0.050 <0.050 <0.050 <0.0002 320 MW-1D 6/7/04 <0.01 0.540 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 13 12/1/05 <0.01 0.360 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 7.7 6/10/06 <0.01 0.341 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 20 4/5/07 <0.01 0.343 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 12 10/22/07 <0.01 0.365 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 11 6/18/08 <0.01 0.334 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 14 1/14/08 <0.01 0.356 NR NR <0.010 NR NR <0.0002 14 6/24/09 <0.01 0.403 NR NR <0.010 NR NR <0.0002 20 MW-2S 6/22/04 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 32 12/1/05 <0.01 0.180 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 10.1 6/10/06 <0.01 0.198 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 4/5/07 <0.01 0.232 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 4.4 10/22/07 <0.01 0.256 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 3.6 6/18/08 <0.01 0.103 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 4.4 1/14/09 <0.01 0.164 NR NR <0.010 NR NR <0.0002 <5 6/24/09 <0.01 0.173 NR NR <0.010 NR NR <0.0002 <5 12/16/09 <0.01 0.218 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 6/30/10 <0.01 0.229 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 12/14/10 <0.01 0.235 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 6/27/11 <0.01 0.182 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 12/19/11 <0.01 0.216 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 6/29/12 <0.01 0.178 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 <5 6/25/13 <0.01 0.210 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/4/13 <0.01 0.199 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/27/14 <0.01 0.165 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/17/14 <0.01 0.200 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/24/15 <0.01 0.179 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 MW-2D 6/22/04 <0.01 0.170 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.6 12/1/05 <0.01 0.300 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 3.1 6/10/06 <0.01 0.290 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 11 4/5/07 <0.01 0.254 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 2.9 10/22/07 <0.01 0.273 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 4.8 6/18/08 <0.01 0.265 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 22 1/14/09 <0.01 0.253 NR NR <0.010 NR NR <0.0002 16 6/24/09 <0.01 0.289 NR NR <0.010 NR NR <0.0002 6.3 TABLE 3 SUMMARY OF GROUNDWATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium ChromiumLead Selenium Silver Mercury Sulfate NCAC 2L Std.0.01 0.7 0.002 0.01 0.015 0.02 0.02 0.001 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 250 MW-5S 12/1/05 <0.01 0.450 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6.1 6/10/06 <0.01 0.121 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 7 4/5/07 <0.01 0.218 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 4.7 10/22/07 <0.01 0.278 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 4.9 6/18/08 <0.01 0.046 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 8.7 1/14/09 <0.01 0.051 NR NR <0.010 NR NR <0.0002 10 6/24/09 <0.01 0.058 NR NR <0.010 NR NR <0.0002 13 12/16/09 <0.01 0.056 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 17 6/30/10 <0.01 0.057 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 12 12/14/10 <0.01 0.102 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 14 6/27/11 <0.01 0.064 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 17 12/19/11 <0.01 0.087 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 21 6/29/12 <0.01 0.095 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 22 12/18/12 <0.01 0.131 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 25 6/25/13 <0.01 0.025 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 22 12/4/13 <0.01 0.088 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 21 6/27/14 <0.01 0.052 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 14 12/17/14 <0.01 0.082 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 21 MW-5D 12/1/05 <0.01 0.170 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 8.1 6/10/06 <0.01 0.236 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6 4/5/07 <0.01 0.227 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 5.8 10/22/07 <0.01 0.258 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 6.6 6/18/08 <0.01 0.254 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 10 1/14/09 <0.01 0.255 NR NR <0.010 NR NR <0.0002 10 6/24/09 <0.01 0.261 NR NR <0.010 NR NR <0.0002 17 MW-3 12/1/05 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 334 6/10/06 <0.01 0.192 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 580 4/5/07 <0.01 0.342 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 570 11/15/07 <0.01 0.133 <0.001 <0.01 0.036 <0.01 <0.01 <0.0002 380 6/18/08 <0.01 0.145 <0.001 <0.01 0.022 <0.01 <0.01 <0.0002 370 1/14/09 <0.01 0.144 <0.001 <0.01 0.013 <0.01 <0.01 <0.0002 550 6/24/09 <0.01 0.202 <0.001 <0.01 0.081 <0.01 <0.01 <0.0002 570 12/16/09 0.012 0.192 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 710 6/30/10 0.011 0.094 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 840 12/14/10 <0.01 0.125 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 690 6/27/11 <0.10 0.119 <0.01 <0.10 <0.10 <0.10 <0.10 <0.0002 790 12/19/11 <0.01 0.234 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 410 6/29/12 <0.01 0.125 <0.001 <0.01 <0.01 <0.05 <0.01 <0.0002 1,000 12/18/12 0.013 0.136 <0.001 <0.01 <0.01 0.011 <0.01 <0.0002 910 6/25/13 <0.10d 0.201 <0.01d <0.1d <0.1d <0.1d <0.1d <0.0002 950 12/4/13 <0.050d 0.162 <0.005d <0.05d <0.05d <0.05d <0.05d <0.0002 890 6/27/14 <0.027d 0.116 <0.002d <0.07d <0.01d <0.025d <0.07d <0.0002 970 12/17/14 <0.050d 0.151 <0.005d <0.05d <0.05d <0.05d <0.05d <0.0002 760 6/24/15 <0.050d 0.122 <0.005d <0.05d <0.05d <0.05d <0.05d <0.0002 930 TABLE 3 SUMMARY OF GROUNDWATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium ChromiumLead Selenium Silver Mercury Sulfate NCAC 2L Std.0.01 0.7 0.002 0.01 0.015 0.02 0.02 0.001 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 250 MW-4 12/1/05 <0.01 0.460 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.7 6/10/06 <0.01 0.171 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 4/5/07 <0.01 <0.100 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 8.6 10/22/07 <0.01 0.147 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 5.9 6/18/08 <0.01 0.198 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 5.4 1/14/09 <0.01 0.083 NR NR <0.010 NR NR <0.0002 6.4 6/24/09 <0.01 0.349 NR NR <0.010 NR NR <0.0002 7.7 12/16/09 <0.01 0.121 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 7.5 6/30/10 <0.01 0.181 <0.001 0.018 <0.010 <0.01 <0.01 0.0006 15 12/14/10 0.016 0.195 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 16 6/27/11 <0.01 0.227 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 28 12/19/11 <0.01 0.516 0.003 <0.01 0.021 <0.01 <0.01 <0.0002 51 6/29/12 <0.01 0.356 0.008 <0.01 0.032 <0.01 <0.01 <0.0002 100 12/18/12 <0.01 0.262 0.019 <0.01 0.095 <0.01 <0.01 <0.0002 220 6/25/13 <0.01 0.109 0.004 <0.01 0.021 <0.01 <0.01 0.00078 250 12/4/13 <0.01 0.167 0.006 <0.01 <0.010 <0.01 <0.01 <0.0002 130 7/22/14 <0.01 0.085 0.0017 <0.01 <0.010 <0.01 <0.01 0.00101 190 12/17/14 <0.01 0.071 0.0017 <0.01 <0.010 <0.01 <0.01 0.00111 260 6/24/15 <0.01 0.073 0.0015 <0.01 <0.010 <0.01 <0.01 0.00098 260 MW-6 12/1/05 <0.01 1.300 <0.001 <0.01 0.01 <0.01 <0.01 <0.0002 174 6/10/06 <0.01 0.816 <0.001 <0.01 0.013 <0.01 <0.01 <0.0002 510 4/5/07 <0.01 0.312 <0.001 <0.01 0.032 <0.01 <0.01 <0.0002 220 11/15/07 <0.01 0.120 <0.001 <0.01 0.074 <0.01 <0.01 0.00026 290 6/18/08 <0.01 0.080 <0.001 <0.01 0.054 <0.01 <0.01 0.00091 490 1/14/09 <0.01 0.066 NR NR 0.014 NR NR <0.0002 560 6/24/09 0.018 0.155 NR NR 0.016 NR NR 0.00026 430 12/16/09 0.014 0.126 <0.001 <0.01 0.010 <0.01 <0.01 <0.0002 220 6/30/10 0.109 0.313 <0.001 <0.01 0.155 <0.01 <0.01 0.0003 300 12/14/10 0.018 0.138 <0.001 <0.01 <0.010 <0.01 <0.01 <0.0002 350 6/27/11 <0.10 0.717 <0.01 <0.10 <0.10 <0.10 <0.10 0.00095 460 12/19/11 <0.01 0.148 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 260 6/29/12 <0.05 0.156 <0.001 <0.01 <0.01 <0.05 <0.01 <0.0002 330 12/18/12 0.031 0.131 <0.001 <0.01 <0.01 0.012 <0.01 <0.0002 270 6/25/13 <0.01 0.152 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 270 12/4/13 <0.05d 0.247 <0.005d <0.05d <0.05d <0.05d <0.05d <0.0002 300 6/27/14 0.0189 0.193 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 260 12/17/14 0.099 0.155 <0.005d <0.05d 0.122 <0.05d <0.05d <0.0002 660 6/24/15 <0.05d 0.116 <0.005d <0.05d 0.100 <0.05d <0.05d <0.0002 790 TABLE 3 SUMMARY OF GROUNDWATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium ChromiumLead Selenium Silver Mercury Sulfate NCAC 2L Std.0.01 0.7 0.002 0.01 0.015 0.02 0.02 0.001 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 250 MW-7 12/1/05 0.038 <0.10 <0.001 <0.01 0.093 <0.01 <0.01 <0.0002 379 6/10/06 0.03 0.059 <0.001 <0.01 0.053 <0.01 <0.01 <0.0002 500 4/5/07 0.017 <0.100 <0.001 <0.01 0.047 <0.01 <0.01 0.0003 460 11/15/07 0.029 <0.100 <0.001 <0.01 0.124 <0.01 <0.01 0.00072 250 6/18/08 0.019 0.042 <0.001 <0.01 0.072 <0.01 <0.01 <0.0002 420 1/14/09 0.022 0.052 <0.001 <0.01 0.088 <0.01 <0.01 <0.0002 500 6/24/09 0.072 0.080 <0.001 <0.01 0.171 <0.01 <0.01 <0.0002 500 12/16/09 0.128 0.123 <0.01 <0.01 0.273 <0.10 <0.10 0.0006 490 6/30/10 0.208 0.172 <0.01 <0.01 0.379 <0.10 <0.10 0.0002 530 12/14/10 0.230 0.255 <0.01 <0.01 0.649 <0.10 <0.10 0.00057 590 6/27/11 0.134 0.159 <0.01 <0.10 0.396 <0.10 <0.10 0.00033 540 12/19/11 0.107 0.172 <0.01 <0.10 0.468 <0.10 <0.10 <0.0002 640 6/29/12 0.059 0.120 <0.005 <0.05 0.270 <0.05 <0.05 <0.0002 580 12/18/12 <0.100d 0.158 <0.01 <0.10 0.397 <0.10 <0.10 <0.0002 700 6/25/13 <0.100d 0.114 <0.01d <0.10d 0.190 <0.10d <0.10d <0.0002 600 12/4/13 0.070 0.119 <0.05d <0.050d 0.235 <0.050d <0.050d <0.0002 470 6/27/14 0.078 0.093 <0.002d <0.007d 0.139 <0.025d <0.010d <0.0002 670 12/17/14 0.167 0.205 <0.05d <0.050d 0.553 <0.050d <0.050d <0.0002 710 6/24/15 0.068 0.176 <0.05d <0.050d 0.311 <0.050d <0.050d <0.0002 700 MW-8 4/5/07 0.025 <0.100 <0.001 <0.01 0.024 <0.01 <0.01 <0.0002 400 11/15/07 0.030 <0.100 <0.001 <0.01 0.038 <0.01 <0.01 <0.0002 430 6/18/08 0.031 0.048 <0.001 <0.01 0.027 <0.01 <0.01 <0.0002 300 1/14/09 0.028 0.039 NR NR 0.032 NR NR <0.0002 350 6/24/09 0.159 0.114 NR NR 0.173 NR NR 0.0003 460 12/16/09 0.569 0.286j <0.016 <0.050 0.376j <0.135 <0.095 0.0002 460 6/30/10 0.366 0.232 <0.016 <0.050 0.283 <0.135 <0.095 0.0002 500 12/14/10 0.267 0.243 <0.01 <0.100 0.369 <0.100 <0.100 0.0013 470 6/27/11 0.207 0.223 <0.01 <0.100 0.103 <0.100 <0.100 <0.0002 410 12/19/11 <0.100 0.321 <0.01 <0.100 <0.100 <0.100 <0.100 <0.0002 270 6/29/12 0.146 0.169 <0.005 <0.05 0.199 <0.05 <0.05 <0.0002 580 12/18/12 0.110 0.168 <0.01 <0.100 0.234 <0.10 <0.10 <0.0002 580 6/25/13 0.140 0.172 <0.01d <0.100d 0.169 <0.10d <0.10d <0.0002 620 12/4/13 0.126 0.177 <0.05d <0.050d 0.211 <0.050d <0.050d <0.0002 510 6/27/14 0.154 0.130 <0.002d <0.007d 0.168 <0.025d <0.010d <0.0002 700 12/17/14 0.124 0.143 <0.05d <0.050d 0.263 <0.050d <0.050d <0.0002 620 6/24/15 0.067 0.152 <0.05d <0.050d 0.327 <0.050d <0.050d <0.0002 700 Concentrations in mg/L (ppm), "j" = estimated concentration, "d"= diluted, Specific Conductivity = mS/cm Bold values exceed the 2L Groundwater StandardMW-1S, MW-2S and MW-5S are screened shallow (approx. 3 to 13 feet). MW-1D, MW-2D, and MW-5D are screened deep (approx. 23 to 33 feet). MW-3, MW-4, MW-6 and MW-7 are shallow wells located on the SE, SW, NW and NE corners. TABLE 4 SUMMARY OF SURFACE WATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium Chromium Lead Selenium Silver Mercury Sulfate NCAC 2B Std.0.05 1.0 0.002 0.05 0.025 0.005 0.06 0.000012 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 SW-1 3/4/03 <0.01 <0.10 <0.001 <0.01 <0.005 <0.01 <0.01 <0.0002 12 6/22/04 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <2.0 12/1/05 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6.3 6/10/06 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 4/5/07 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6.6 10/22/07 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 3.8 6/18/08 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 2.5 1/14/09 <0.01 <0.10 NR NR <0.01 NR NR <0.0002 5.6 6/24/09 <0.01 0.030 NR NR <0.01 NR NR <0.0002 <5 12/16/09 <0.01 0.048 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6.2 6/30/10 <0.01 0.032 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/14/10 <0.01 0.025 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/27/11 <0.01 0.041 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/19/11 <0.01 0.025 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/18/12 <0.01 0.028 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/25/13 <0.01 0.040 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/4/13 <0.01 0.025 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.3 6/27/14 <0.01 0.030 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/17/14 <0.01 0.027 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/24/15 <0.01 0.032 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 SW-2 3/4/03 <0.01 <0.10 <0.001 <0.01 <0.005 <0.01 <0.01 <0.0002 13 6/22/04 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <2.0 12/1/05 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 10.2 6/10/06 <0.01 0.090 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 4/5/07 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 3.5 10/22/07 DRY 7/8/08 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 13 1/14/09 <0.01 <0.10 NR NR <0.01 NR NR <0.0002 6.1 6/24/09 <0.01 0.088 NR NR <0.01 NR NR <0.0002 <5 12/16/09 <0.01 0.025 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 7.5 6/30/10 DRY 12/14/10 <0.01 0.034 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.3 6/27/11 DRY 12/19/11 <0.01 0.027 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/18/12 <0.01 0.031 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 6/25/13 <0.01 0.037 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/4/13 <0.01 0.023 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.3 6/27/14 <0.01 0.038 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/17/14 <0.01 0.027 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 5.5 6/24/15 <0.01 0.073 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 TABLE 4 SUMMARY OF SURFACE WATER ANALYSES SWIFT CREEK PROJECT Concentration in mg/L (ppm) Sherrill Environmental, Inc. GW Analysis 2015 Arsenic Barium Cadmium Chromium Lead Selenium Silver Mercury Sulfate NCAC 2B Std.0.05 1.0 0.002 0.05 0.025 0.005 0.06 0.000012 250 NCDWM SWSL 0.01 0.1 0.001 0.01 0.01 0.01 0.01 0.0002 SW-3 4/5/07 <0.01 <0.10 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 2.4 10/22/07 DRY 6/18/08 <0.01 0.089 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 3.3 1/14/09 <0.01 <0.10 NR NR <0.01 NR NR <0.0002 20 6/24/09 <0.01 0.087 NR NR <0.01 NR NR <0.0002 <5 12/16/09 <0.01 0.075 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 14 6/30/10 <0.01 0.328 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 47 12/14/10 <0.01 0.074 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 16 6/27/11 DRY 12/19/11 <0.01 0.065 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 8 12/18/12 <0.01 0.067 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 6.5 6/25/13 <0.01 0.087 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 7.4 12/4/13 <0.01 0.051 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 23 6/27/14 <0.01 0.038 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 12/17/14 <0.01 0.08 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 9.9 6/24/15 <0.01 0.048 <0.001 <0.01 <0.01 <0.01 <0.01 <0.0002 <5 Concentrations in mg/L (ppm) Bold values exceed the 2B Surface Water Standard SW-1 Swift Creek at bridge (background). SW-2 in swamp near MW-2S and MW-2D SW-3 in Lane Swamp north of MW-8 TABLE 5 MONITORING WELL AND PIEZOMETER SUMMARY SWIFT CREEK PROJECT Sherrill Environmental, Inc. Piezometer Top of Casing Elev. Ground Surface Elev. Casing Stick Up Screen Interval Total Depth (TOC) Measured Total Depth 8/2007 Ash/Soil Contact Ash/Soil Contact Elv. Alluvial/ Marine contact Elv.Comments P-1 108.19 105.6 2.6 20-30 32.6 14.4 91.2 Missing P-2 109.53 106.7 2.8 20-30 32.8 33.90 16.1 90.6 P-3 106.18 104.4 1.8 18-28 30.0 12.5 91.9 P-4 106.57 104.0 2.6 20-30 32.6 14.0 90.0 Damaged P-5 108.39 105.9 2.5 20-30 32.5 32.57 13 92.9 P-6 109.79 107.5 2.3 20-30 32.3 32.35 13.5 94.0 P-7 107.77 105.9 1.9 30-40 41.9 42.30 14.3 91.6 82.9 Damaged P-8 106.53 103.9 2.6 30-40 42.6 42.15 13.3 90.7 82.9 P-9 103.32 100.9 2.4 20-30 32.4 32.87 Soil 87.0 Damaged P-10 108.17 106.1 2.1 20-30 32.1 Soil 89.1 Removed P-11 101.88 99.2 2.7 13-23 25.7 Soil 82.0 Removed P-12 107.04 104.0 3.0 6-16 19.0 19.44 13.8 90.2 P-13 108.99 105.9 3.1 6-16 19.1 19.16 13.3 92.7 P-14 105.38 101.9 3.5 4-14 17.5 17.95 11.5 90.4 P-15 103.76 101.0 2.8 4-14 16.8 16.85 11.1 89.9 P-16 105.28 102.1 3.2 4-14 17.2 11.5 90.6 Damaged P-17 105.31 101.8 3.5 4-14 17.5 17.93 11.5 90.3 P-18 111.21 107.5 3.7 5-15 18.7 18.30 13.5 94.0 P-19 111.86 108.3 3.6 7-17 20.6 20.00 15.2 93.1 P-20 107.00 104.2 2.8 7-17 19.8 19.94 15.0 89.2 P-21 104.99 99.5 5.5 4.5-11.5 16.5 16.60 9.5 90.0 P-22 103.60 101.8 1.8 17-27 28.8 Soil 87.0 P-23East 109.75 107.1 2.7 9-19 21.8 12.0 95.0 90.0 P-24West 103.17 101.1 2.1 3-13 15.3 Soil 90.0 B-1 107.66 105.7 2.0 14-19 21.0 19.40 13.5 92.2 88.9 1" casing Monitoring Wells MW-1S 99.54 96.8 2.7 3-13 15.7 84.0 MW-1D 99.90 97.1 2.8 23-33 35.7 84.0 MW-2S 94.87 92.1 2.8 6-16 18.7 78.5 MW-2D 95.22 92.2 3.0 26-36 39.1 78.5 MW-3 102.15 99.2 3.0 7-17 20.0 82.2 MW-4 106.06 104.1 2.0 8-18 20.0 89.1 MW-5S 102.68 99.7 3.0 6-16 17.0 88.2 Abandoned MW-5D 102.67 99.8 2.9 25-35 37.9 88.2 Abandoned MW-6 98.41 95.0 3.4 6-16 19.4 79.0 MW-7 98.63 95.1 3.5 6-16 19.5 79.0 Damaged by bullet MW-8 95.42 92.4 3.0 6-16 19.0 76.4 FIGURES N ! Site RIANGLE ENVIRONMENT Al INC. P.O. Box 41087 Raleigh, N.C. 27629 (919) 876-5115 (800) 849-5115 (919) 790-8273 fax 2 PROJ. 461-0109 FIGURE: PROJECT: Swift Creek Project DRWN BY: Soil Survey Map of Nash County, NC SCALE: 1" = 2000' APPENDIX Page 1 of 16 Page 2 of 16 Page 3 of 16 Page 4 of 16 Page 5 of 16 Page 6 of 16 Page 7 of 16 Page 8 of 16 Page 9 of 16 Page 10 of 16 Page 11 of 16 Page 12 of 16 Page 13 of 16 Page 14 of 16 Page 15 of 16 Page 16 of 16 S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : - " ' S ' " " " " w . . : . . : i = f t ' - ' C = r = e = e k = - - - - - - - P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 1 0 2 > B G W E L L N U M B E R : M W - l S P e r s o n n e l : J . S h e r r i l l , L G W e l l I . D i a m : _ M e a s u r e m e n t s f r o m T D C S c r e e n e d i n t e r v a l : _ _ _ _ _ _ _ T o t a l w e l l d e p t h ( T D ) : 1 5 . 7 L e n g t h o f w a t e r c o l u m n : C : : : , r ' 1 8 T o t a l w a t e r v o l u m e p u r g e d : 3 • 9 D e p t h t o w a t e r ( D T W ) : 8 , 7 2 _ V o l u m e i n w e l l ( g a l ) : I , l 2 . . M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x v g e n ( % ) ( m V ) 6 , 3 I C > 3 0 l o , Z 1 Z J ) , Z } ~ r t - f Z C j L f . ' ; : / e < ; , , q l { 3 t o 3 S § , 8 8 1 ~ 1 ~ I 3 I 8 1 0 ) \ I y ' l Z 1 J 5 c D t o l f D ~ 8 3 1 ' 1 3 L r s . & t f O " 1 . z C ) l . G ~ c ~ L ( Y f Z ~ , 8 / ( 9 l _ ' j { ( , , Z l . 6 ' 1 . 2 9 0 , I : S ~ r s { ( ) ' / " [ , ~ t 7 1 1 - 1 9 . Z Z J f : u r z ( ) ' - / . 3 c ; l . o i I : I i I I I ' ! I I Remarks on Sampling and Well Condition: Sample Collected: MW lJ> YB. q g Sulfate and Total RCRA Metals Sample Collection Time: I D L./ 8 T u r b i d i t y ( N T U ) t : , s : z I ' - 1 , C f ! ; " , , G , < : _ ? , / J . S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : - = = S " - - ' w ' " ' " ' i = f t = - C = r e = e = k ' - - - - - - - P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 I 0 5 " 5 _ 3 b W E L L N U M B E R : M W - 2 S P e r s o n n e l : J . S h e r r i l l , L G W e l l I . D i a m : _ M e a s u r e m e n t s f r o m T O C S c r e e n e d i n t e r v a l : . _ _ _ _ _ _ _ T o t a l w e l l d e p t h ( T D ) : 1 8 . 7 L e n g t h o f w a t e r c o l u m n : I t - f r 2 T o t a l w a t e r v o l u m e p u r g e d : 3 • 3 > D e p t h t o w a t e r ( D T W ) : L f 1 4 . 0 V o l u m e i n w e l l ( g a l ) : Z 1 Z B M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) L O l 1 c o 1 . 0 3 J ~ , 9 5 o , G 0 C ] s - , 3 - / ( ) ? , ~ 2 - c ' i i t o ~ ( , , q f ? 1 ~ 5 3 ( ) , 0 ( 3 3 \ t { - l l . . ~ . t 3 c 0 t l l O 1 ~ 0 0 1 1 . 8 ' ( 0 1 t 9 ~ q t . t \ _ 3 - 1 3 > . Z ~ L ° ? J r 1 1 \ 1 . { ) \ \ ' ; f : 7 - 4 { ) r f o ° / l L t . . 3 - t 3 ~ · ( ; , I I I I I Remarks on Sampling and Well Condition: Sample Collected: Sulfate and Total RCRA Metals f'\W-2.]) Y tr. 80 Sample Collection Time: I I 15 T u r b i d i t y ( N T U ) 5 , 5 l { l " " S z , ~ I 1 8 l o o o S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : - - = S " " " ' w ' " ' " ' 1 = · f t - = - - C = r e ~ e = k , _ _ _ _ _ _ _ _ P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 C f 5 ~ ~ ~ o W E L L N U M B E R : M W - 3 P e r s o n n e l : J . S h e r r i l l , L G W e l l I . D i a m : _ M e a s u r e m e n t s f r o m T D C S c r e e n e d i n t e r v a l : - - - - - - - T o t a l w e l l d e p t h ( T D ) : 2 0 . 0 D e p t h t o w a t e r ( D T W ) : / C J , O l / L e n g t h o f w a t e r c o l u m n : ° < t 4 . 0 T o t a l w a t e r v o l u m e p u r g e d : · 3 ' t - / V o l u m e i n w e l l ( g a l ) : { , 5 ~ M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P T u r b i d i t y V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) ( N T U ) L O l f J 0 5 ~ , 1 1 _ I f 5 , ' j 3 G . 3 G Z 7 - b , ~ S ' t . ~ n i , > ' L e ' i t o t o r ; , b ~ 1 8 , b 3 i - - , O q l t J . / I " / ' t s , D ~ ( : , J . D t O t z _ 5 . ~ z _ { ' 3 r l f 8 = t . 5 l 1 - , · 3 l f 4 / \ 3 . 3 3 c l . f 1 0 1 s ; ( 5 5 I 8 / \ C f t : . o S ' f " 1 . 2 . _ 4 . f r f 5 , b Remarks on Sampling and Well Condition: Sample Collected: Sulfate and Total RCRA Metals Sample Collection Time: ! D IS ~ 7 3 S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : - - " S ' - ' w - ' - ' i = f t = - - C = r e = e = k ' - - - - - - - - P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e W E L L N U M B E R : M W - 4 W e l l I . D i a m : M e a s u r e m e n t s f r o m T O C D a t e : 0 6 1 2 4 / 2 0 1 5 T i m e : W e a t h e r : : u s < a t / 0 c . k t t r P e r s o n n e l : J . S h e r r i l l , L G S c r e e n e d i n t e r v a l : _ _ _ _ _ _ _ T o t a l w e l l d e p t h ( T D ) : 2 0 . 0 L e n g t h o f w a t e r c o l u m n : 5 e b b T o t a l w a t e r v o l u m e p u r g e d : ' 3 , Q D e p t h t o w a t e r ( D T W ) : / ~ r > t { V o l u m e i n w e l l ( g a l ) : ~ , q M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P T u r b i d i t y V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) ( N T U ) o , ( Q : i E ~ c O f ) F l % 1 / 3 ( ( ) - z 3 , i J z z ~ 1 1 . z L O 0 4 0 ' 1 . Z t ; t ~ R I I I 4 ? > " ~ t s . ~ z ~ ~ ~ , + 2 . t l { 9 q 5 ~ - ( , 5 z . l i . ~ l . t , ~ O I ° ( , 5 Z - 2 4 " ' ) < D ' I f > i ; o L - ( , b C f t i , 1 9 I ' ° t " : l - n 8 t s 2 - l ' 1 0 , 3 I I I ! I ! ! i ! ! i I Remarks on Sampling and Well Condition: Sample Collected: Sulfate and Total RCRA Metals Sample Collection Time: ~ ~ z... S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : " " " " ' S ' - ' w " " ' " " ' i = f t = - C = = r e ' " " " " e = k ' - - - - - - - - P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 I 2 l 5 ' 1 2 - W E L L N U M B E R : M W - 6 P e r s o n n e l : J . S h e r r i l l , L G W e l l I . D i a m : M e a s u r e m e n t s . f r o m T O C S c r e e n e d i n t e r v a l : - - - - - - - T o t a l w e l l d e p t h ( T D ) : 1 9 . 4 L e n g t h o f w a t e r c o l u m n : l l , Z . L T o t a l w a t e r v o l u m e p u r g e d : 3 1 0 D e p t h t o w a t e r ( D T W ) : B ~ - ( 8 V o l u m e i n w e l l ( g a l ) : I . . 1 - ' j M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) 0 t : : \ t ? _ 2 . . 0 3 t : ) . L f I R t - D 1 z , 9 = t D C Z , 8 I 0 ( 3 / - 1 2 - c O t U S 3 , 1 5 l ' 8 , 8 ' 1 t z . \ . : + 2 - 0 0 r ' f l i ) { , Z . , Z . . c g l 2 . . 3 D 3 « = I S l 8 ~ : r l Z c ? 3 t > ~ ( - : , 2 . . 1 ' - t . 9 3 " 0 1 l l 3 Z 3 : - t b r S , 5 1 l ' 2 . . 1 7 3 6 r ; ( l f _ Z . l < 1 1 0 I I I i I i : I i i I ! i ! : I I I Remarks on Sampling and Well Condition: Sample Collected: Sulfate and Total RCRA Metals Sample Collection Time: I 2. 3 5 T u r b i d i t y ( N T U ) 5 , z _ ~ , 3 3 S c - = t Z , £ 3 S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : ~ S ' " " " ' w " " ' " " ' i = f t = - C ~ r e ' " " " " e = k ' - - - - - - ­ P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 I ' L . O ° L l f W E L L N U M B E R : M W - 7 P e r s o n n e l : J . S h e r r i l l , L G W e l l I . D i a m : _ M e a s u r e m e n t s f r o m T O C S c r e e n e d i n t e r v a l : - - - - - - - T o t a l w e l l d e p t h ( T D ) : 1 9 . 5 D e p t h t o w a t e r ( D T W ) : ' 8 c S " S L e n g t h o f w a t e r c o l u m n : I 0 ' ° t 5 T o t a l w a t e r v o l u m e p u r g e d : 3 1 · z _ V o l u m e i n w e l l ( g a l ) : I . - - = \ : - M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e T i m e p H T e m p S p e c i f i c D i s s o l v e d O R P V o l . ( G ) ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) 0 t ) l l 3 D L { , o t t ~ . . t t o ( ~ . ' - t 3 0 b r ' f I D 0 . l { i ~ l 1 L 3 ' 5 t ~ c 5 ' 1 1 - : t , b t f R , 3 8 6 3 , q I l f : J - , z _ ~ ( 0 i t t ' 1 V 3 , 8 3 l 1 J ; b l ' B c r ; ' t o : : ; ? , 5 I t ; O r b 3 r Z , : l l 4 3 I 3 , C J f J l : : f \ : / s 1 8 ( ~ 3 0 s ( ( \ S z . . , , b I I I ! I I I I I Remarks on Sampiing and Well Condition: Sample Collected: Sulfate and Total RCRA Metals Sample Collection Time: l \ L\ S T u r b i d i t y ( N T U ) 2 . 0 & , S Z 1 h L 9 S h e r r i l l E n v i r o n m e n t a l , I n c . G R O U N D W A T E R S A M P L I N G F I E L D D A T A W O R K S H E E T P r o j e c t N a m e : ~ S ~ w ~ i = f t ~ C ~ r e ~ e = k ~ - - - - ­ P e r m i t N o . : C l i e n t : R e U s e / F u l l C i r c l e D a t e : T i m e : W e a t h e r : 0 6 1 2 4 / 2 0 1 5 1 1 5 0 < j _ k W E L L N U M B E R : M W - 8 P e r s o n n e l : J . S h e r r i l l . L G W e l l I . D i a m : M e a s u r e m e n t s f r o m T D C S c r e e n e d i n t e r v a l : - - - - - - - T o t a l w e l l d e p t h ( T D ) : 1 9 . 0 L e n g t h o f w a t e r c o l u m n : l ' > · l . . { } T o t a l w a t e r v o l u m e p u r g e d : D , 2 - M e t h o d P u r g e d : P e r i s t a u l t i c P u m p M e t h o d s a m p l e d : P e r i s t a u l t i c P u m p P u r g e I T i m e I p H T e m p S p e c i f i c D e p t h t o w a t e r ( D T W ) : S 1 5 ? - V o l u m e i n w e l l ( g a l ) : Z . 1 I ~ D i s s o l v e d O R P V o l . ( G ) I ( C ) C o n d . ( m S / c m ) O x y g e n ( % ) ( m V ) I I i ' I i j i : I : I ! ' I I I T u r b i d i t y ( N T U ) Remarks on Sampling and Well Conditipn: T/i~ por-f ~ ~ /..,. b~{fe~ Sample Collected: s v Pf l.J b'1 Th re ""---+c... l Co Wt.pa.~1 Sulfate ... and Total RCRA Metals qi) lL,k_lef ra._'-l Ov t o-P . .!., CJ' tee, lJe J.J.' .,,."Ol l-vwe e"-o~ ~ potve.--To pv.r~ e -+f; LU!// bv f Sample Collection Time: I 2-0 2.. w.e_ kA..cl e__ 4-o v D coll ed-' a._ 9.\ '11 ~ -fo r la.lo,,a1.f 0•7 4.. i..4. /'f 15