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Home My WebLink About20181192 Ver 1_C540_Water_Quality_0216_20180122. NORTH CAROLINA : � Turnpike Autharity LOWER SWIFT CREEK WATER QUALITY REPORT Complete 540 Triangle Expressway Southeast Extension Wake and Johnston Counties STIP Project Nos. R-2721, R-2828, and R-2829 State Project Nos. 6.401078, 6.401079, and 6.401080 Federal Aid Project Nos. STP-0540(19), STP-0540(20), and STP-0540(21) WBS Nos. 37673.1.TA2, 35516.1.TA2, and 35517.1.TA1 Prepared for: North Carolina Department of Transportation North Carolina Turnpike Authority Prepared by: Three Oaks Engineering, Inc. � The Catena Group, Inc. �`��'��`��';�. The � t. + r � ---� �ater�� ____ �ro�� 3�� February 23, 2016 1.0 1.1. 1.2. 1.3. 2.0 2.1. 2.2. 3.0 3.1. 3.2. 3.3. 3.4. 4.0 5.0 Table of Contents Introduction ................................................................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 1 Background...................................................................................................................... 1 PreviousStudies ............................................................................................................... 2 BioticLigand Model ........................................................................................................ 3 Methods................................................................................................................................ 3 Water Quality Data Collection ......................................................................................... 3 ToxicityAnalysis ............................................................................................................. 5 Results and Discussion ........................................................................................................ 6 Environmental Exposure Concentrations ......................................................................... 6 Ward et al. Ammonia Update ........................................................................................... 8 BLMAnalysis .................................................................................................................. 9 USGS and City of Raleigh Water Quality Monitoring .................................................. 11 Conclusion......................................................................................................................... 13 Resources........................................................................................................................... 15 Table of Tables Table 1. Water quality parameters measured in Lower SCW . ....................................................... 4 Table 2. Dates of sampling events and approximate flows during each event ............................... 4 Table 3. Ammonia concentrations in Swift Creek during 2014-2015 sampling events and corresponding CMC and CCC values in mg/L (USEPA 2013) ...................................................... 7 Table 4. Statistical information for other metals and compounds analyzed for this study, as compared to water quality standards (NCDWR 2003) . .................................................................. 8 Table 5. Watershed-specific ESVs for ammonia concentrations that are protective of freshwater mussels............................................................................................................................................ 9 Table 6. Comparison of Swift Creek total and dissolved copper concentrations to water quality criteria and BLM-derived CMC and CCC (in ug/L) .................................................................... 10 Table 7. Statistics far water quality parameters collected in Swift Creek (n=24 for all parameters) ....................................................................................................................................................... 11 Table 8. Results of sensitivity analysis of Swift Creek water quality data in the BLM analysis of water quality criteria for copper. Dissolved organic carbon and pH (shaded) are the parameters with the most influence on the model output ................................................................................ 11 Table 9. USGS Gauge 02087701 BLM results ............................................................................. 13 Table of Figures Figure 1— Monitoring Station Locations Appendices Appendix A— 2014-2015 Water Quality Laboratory Results Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page ii Appendix B— ENCO Laboratory Reports Appendix C— Historical Water Quality Analysis Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page iii 1.0 INTRODUCTION The North Carolina Turnpike Authority (NCTA) of the North Carolina Department of Transportation (NCDOT) proposes construction of a new road corridor from NG55 (Apex) East to US-64 Bypass (Knightdale). Dwarf Wedgemussel (Alasmidonta heterodon, DWM), which is listed by the US Fish and Wildlife Service (USFWS) as a federally endangered species, occurs in Swift Creek of the Neuse River Basin within the proposed action area of the project. It was first documented to occur in Swift Creek in 1991. To update the environmental baseline for the DWM population in Swift Creek, a multi-tier study was conducted to determine the viability of this population. This report addresses water quality conditions in the Swift Creek Watershed (SCW) to assist in determining if conditions are sufficient to continue to support DWM. The historical range of DWM extends 23 miles from above the Wake/Johnston County line to Swift Creek Road in Johnston County. The study area for this report includes the historical range, which extends from Lake Benson to the confluence with the Neuse River, and is referred to here as Lower SCW. As detailed in the Phase 1 Dwarf Wedgemussel Viability Study completed for this project by Three Oaks Engineering/The Catena Group (Catena 2014), there are limited water quality datasets in the Lower SCW. Therefore, greater efforts were made to gather water quality information for the Lower SCW, particularly in regard to parameters that threaten the DWM, such as pH, dissolved oxygen (DO), ammonia, and copper. I.I.Background Under the Clean Water Act, the U.S. Environmental Protection Agency (EPA) recommends levels of ambient water quality concentrations to protect aquatic organisms living in surface waters. These levels are developed by determining the effects of pollutants on aquatic organisms. An aquatic life criterion is set at the highest concentration of a pollutant that is not expected to pose a significant threat to the majority of species in a given environment. Given the sensitivity of freshwater mussels' life cycle, means of consuming food, and inability to move long distances, there is concern that certain water quality criteria might not protect mussels from dangerous levels of some pollutants. The North Carolina Division of Water Resources (DWR, formerly the Division of Water Quality) is responsible for managing North Carolina's surface waters. Effective January 1, 2015, North Carolina has adopted water quality standards for several dissolved metals, including copper. Though the EPA has not yet approved these standards, for the purposes of this report, they will be used as the water quality standards for copper (USEPA 2007, NC Register 2014). Similar standards for copper have been accepted by EPA for recommended water quality criteria, so the newly adopted NC rules will likely get approved. There are no state water quality Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 1 standards for ammonia, so the EPA approved water quality criteria will be used for analysis of ammonia (USEPA 2013). Several studies have examined methods for determining toxicity levels of certain water quality parameters on freshwater mussels. A discussion of two of these methods follows. The first study (Ward et aL 2007) examines both copper and ammonia ambient concentrations and implications for toxicity. The second study (Augspurger 2012) focuses on copper, which the Ward study identifies as the most significant pollutant to freshwater mussels in the SCW. 1.2. Prevrous Studres Ward et al. (2007) examined water quality by analyzing copper, ammonia, and chlorine in three river basins in NC that contain either DWM or Carolina Heelsplitter (Lasmigona decorata), both endangered freshwater mussels. Along with several sampling locations in the SCW, they also sampled in Fishing Creek (part of the Tar-Pamlico River basin) and Goose Creek (part of the Yadkin-Pee Dee River basin). Sampling was conducted at five sites in each drainage basin, with varying proximity to wastewater treatment facilities (often sources of contamination). Samples were collected every two months for one year, usually during base flow conditions (not during storm events). In addition to DO, temperature, pH, and total residual chlorine (measured in the field), total ammonia and total recoverable copper were analyzed. Additionally, ammonia and copper data were obtained from DWR ambient monitoring stations in each of the three drainage basins. Ammonia toxicity is dependent on temperature and pH. The 2007 Ward et al. study used EPA's "1999 Update of ambient water quality criteria for ammonia" and mussel toxicity data to determine acute and chronic concentrations of ammonia that should not harm mussels based on site-specific pH (USEPA 1999). Copper toxicity is influenced by pH, dissolved organic carbon, water hardness, sodium, potassium, sulfate, chloride, alkalinity, and temperature. The EPA's "1996 Water quality criteria documents for the protection of aquatic life in ambient water", which was based only on water hardness, was used to determine acute and chronic concentrations that should not harm mussels based on site-specific hardness (USEPA 1996). The "2007 EPA updated aquatic life criteria for copper" uses a biotic ligand model (BLM), which requires several mare parameters than were available for the Ward study (see Section 1.3 for more details, USEPA 2007). In measuring concentrations of the three parameters in the three river basins, Ward et aL (2007) found that Goose Creek had the most elevated ammonia concentrations. Copper was less than or equal to 10 ug/L in all but 7 of the 95 samples, all 7 of which occurred in Goose Creek on one day during a heavy storm event, indicating that the elevated levels were likely due to an increase in suspended sediment in the stream. Chlarine was detected less frequently than ammonia or Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 2 copper. The median chlorine level was below the method detection limit (MDL) (5.7 ug/L), yet several samples were above 200 ug/L. These elevated samples were in Tar River and Goose Creek and below Waste Water Treatment Plants. While risk of exposure to all parameters was highest in Goose Creek, copper concentrations were concerns in all three drainages, including Swift Creek. Chlorine concentrations were infrequently a concern, and risks associated with periodic spikes were not well understood. 1.3. Biotic Ligand Model Metal toxicity and biological availability is known to be dependent on water chemistry (Adams and Chapman 2007). HydroQual developed a method for determining metal toxicity using the BLM (HydroQua12005). This model incorporates a total of 12 water quality parameters to analyze how metal toxicity changes at the biotic ligand, or the site of action on an aquatic organism. This model is thought to more accurately represent the sensitivity of freshwater mussels to metals, and it was incorporated into the EPA's revised water quality criteria in 2007 (USEPA 2007). A study by Augspurger (2012) analyzed copper concentrations in the Goose Creek watershed in Union County, NC, the same watershed examined in the 2007 Ward study, and evaluated the potential for toxicity using the BLM. This 2012 study found that Goose Creek copper concentrations did not exceed acute or chronic concentrations as derived from the BLM. A sensitivity analysis of the BLM indicated pH and dissolved organic carbon were the most influential of the 12 water quality parameters on the outcome of the BLM analysis. These papers form the foundation of the water quality analysis performed here. The BLM was published after the Ward study, so it could not be used to analyze the data from the Ward study. 2.0 METHODS Z.1. Water Quality Data Collection Water quality sampling in the Lower SCW was performed at three locations; Swift Creek crossings of NC 50 (Benson Road), SR 1555 (Barber Mill Road), and NC 210 (Figure 1). The sites were selected for ease of access and it is the opinion of Three Oaks that water quality conditions at these locations are indicative of the current occupied range of DWM in Swift Creek. These sampling sites are believed to represent the range of conditions in the watershed in terms of habitat conditions and flow conditions. At the upper most site (NC 50), Swift Creek is largely influenced by development. As the stream flows southeast, it moves further from urban areas and becomes more stable. Samples were collected from November 2014 through July 2015. Water quality parameters that were measured are listed in Table 1. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 3 Table 1. Water ualit arameters measured in Lower SCW. Field Parameters Laboratory Parameters Dissolved Oxygen Calcium (Ca)* Temperature* Magnesium (Mg)* Conductivity Sodium (Na)* pH* Potassium (K)* Sulfate as SO4* Chloride (Cl)* Total Alkalinity (as CaCO3)* Dissolved Organic Carbon (DOC)* Copper (Total and dissolved*) Lead Nickel Zinc Cadmium * indicates parameters used in the BLM to predict copper toxicity to treshwater mussels Water samples were collected a total of eight times from each site over the course of the sampling period: once during each season, twice during a high-flow event (when flow at USGS gauge 0208773375 was >50% above the median daily statistic), and twice during a low-flow event (when flow at the same gauge was <50% below the median daily statistic) (Table 2). While extreme flow conditions were not observed, a range of flows are represented by the days on which sampling occurred. T; �ble 2. Dates of sam lin events and a roximate flows durin each event Date Sam led Sites Sam led Flow (in cfs) Median Dail Dischar e* Flow Cate o** Nov 4, 2014 NC 210, NC 50 30 33 Base Nov 19, 2014 NC 210, SR 1555, NC 50 50 27 Base/High Dec 16, 2014 SR 1555 38 34 Base Feb 6, 2015 NC 210, SR 1555, NC 50 100 110 Base Apri17, 2015 NC 210, SR 1555, NC 50 47 79 Base/Low May 7, 2015 NC 210, SR 1555, NC 50 39 112 Low June 9, 2015 NC 210, SR 1555, NC 50 11 50 Low July 1, 2015 NC 210, SR 1555, NC 50 53 11 High July 10, 2015 NC 210, SR 1555, NC 50 127 15 High *Median Daily Discharge is based on 6 years of data **Flow at time of sampling varied slightly, so several samples were on the line between base flow and low flow or base flow and high flow. These values are approximate. Field parameters were measured at the time of sampling by use of a multi-parameter meter (YSI Professional Plus, Yellow Spring, OH, USA). For all parameters, grab samples were collected from visibly flowing portions of the stream (not in stagnant pools), approximately one meter away from the bank toward mid-channel. All samples were stared on ice (at �4°C) in the field and taken the same day to ENCO Laboratory (Cary, NC) for analysis. Grab samples for ammonia were collected in chemically cleaned 250mL polyethylene bottles and acidified with concentrated sulfuric acid (H2SO4) to pH <2. Ammonia as nitrogen was measured by the semi-automated colorimetry method following protocols described in EPA Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 4 method 350.1 (USEPA 1993a). Quality control for ammonia measurements included analyses of reagent blanks, matrix spike, and duplicate matrix spike. The MDL was 0.045 mg/L. Grab samples for copper were collected unfiltered in chemically cleaned 250 mL polyethylene bottles and acidified with nitric acid (HNOs). Total copper and dissolved copper were measured by the inductively coupled plasma-atomic emission spectrometry method following protocols described in EPA method 6010C (USEPA 2000). Quality control for copper measurements included analyses of reagent blanks, a laboratory control sample, matrix spike, duplicate matrix spike, and post spike. The MDL was 1.60 ug/L. Grab samples for dissolved organic carbon (DOC) were collected in chemically cleaned 250m1 polyethylene bottles. Dissolved organic carbon was measured by the high-temperature combustion method described in Standard Method 5310 B(SM 5310B-2000). Quality control for DOC measurements included analyses of reagent blanks, a laboratory control sample, matrix spike, and duplicate matrix spike. The MDL was 0.32 mg/L. Grab samples for cadmium, calcium, lead, magnesium, nickel, potassium, sodium, and zinc were collected in chemically cleaned bottles. These ions were measured by the inductively couple plasma-atomic emission spectrometry method following protocols described in EPA method 6010C (USEPA 2000). Quality control for these measurements included analyses of reagent blanks, a laboratory control sample, matrix spike, duplicate matrix spike and post spike. The MDL for cadmium was 0.36 ug/L. The MDL for calcium was 39.0 ug/L. The MDL for lead was 2.10 ug/L. The MDL for magnesium was 23.0 ug/L. The MDL for nickel was 1.80 ug/L. The MDL for potassium was 150 ug/L. The MDL for sodium was 400 ug/L. The MDL for zinc was 3.80 ug/L. Grab samples for chloride and sulfate were collected in chemically cleaned bottles. These ions were measured by the ion chromatography method described in EPA method 300 (EPA 1993b). Quality control far the ion measurements included analyses of reagent blanks, a labaratory control sample, matrix spike, and duplicate matrix spike. The MDL for chloride was 2.2 mg/L. The MDL far sulfate was 2.9 mg/L. 2,2. Toxicity A�alysis The toxicity of ammonia and copper were analyzed using the most up to date methods. The first method simply compares the measured concentration of each parameter to the NC water quality standard (for copper, based on the EPA criteria for that parameter, "Aquatic Life Ambient Freshwater Quality Criteria — Copper, 2007 Revision") and the EPA criteria for ammonia ("Aquatic Life Ambient Water Quality Criteria for Ammonia — Freshwater, 2013"). Additionally, the BLM method was used to evaluate the potential for copper toxicity. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 5 Water samples collected for this study were evaluated using BLM in Water Quality Criteria Calculation mode. Using the model in this mode analyzes the parameters in Table 2(with an asterisk) to adjust the EPA acute and chronic water quality criteria for protection of aquatic species to local water quality conditions. The criteria that the BLM predicts are then compared to dissolved copper concentrations. If dissolved copper was not detected in a sample, the total copper concentration was multiplied by a conversion factor of 0.96. If neither dissolved nor total copper was detected, then the model was not run. 3.0 RESULTS AND DISCUSSION All water sample analyses were completed with quality control / quality assurance samples (blanks, spikes, duplicates). Review of quality assurance data indicates acceptable precision and accuracy for most analyses. The laboratory blank sample for copper analysis contained low levels of copper (2.56 ug/L and 3.11 ug/L for total and dissolved copper, respectively) on one of the sampling dates (April 7, 2015). The three samples from that day were reported with some of the highest concentrations of copper from the study (between 4.13 ug/L and 5.91 ug/L). The spiked and duplicate samples were reported with acceptable recovery. It is possible that some of the copper in these samples is a result of laboratory contamination, or that the laboratory blank was contaminated but the samples were accurate. It is impossible to know for sure. For data analysis purposes, we are assuming that all the copper in the April7th samples is from Swift Creek. Another way to interpret these results is to assume an extra 2.56-3.11 ug/L of copper were in the samples and subtract that amount out of the final result. The significance of these results will be discussed further in Section 3.3. The laboratory blank sample for zinc and nickel analysis contained low levels of zinc and nickel from samples taken on November 4, 2014. Samples did not contain high levels of zinc or nickel, so we assumed that those samples were not compromised. There was poor matrix spike and matrix spike duplicate recoveries for DOC, chloride, sulfate, magnesium, sodium, alkalinity, and ammonia on several occasions, but in each instance, the batch was accepted for these analytes based on the labaratary control spike recoveries. Labaratory reports provided by ENCO for sample analysis are in Appendix B. 3.1. EnvironmentalExposure Concentrations Copper concentrations gathered for this report are summarized in Table 6(along with BLM- derived criteria concentrations, which are discussed in Section 3.3). Total copper was detected in half of the samples, while dissolved copper was detected in about a third (MDL for both analyses is 1.60 ug/L). Four of these samples exceeded the chronic event-speciiic North Carolina water quality standard for copper (derived from hardness levels measured at each sampling event). Additionally, three of these samples exceeded the acute event-speciiic water quality standard for copper. The elevated concentrations of copper appear to occur during lower Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 6 flow rates, which is typically contrary to what would be expected; that copper levels spike during significant rain events when sediment loads into streams increases. Ammonia concentrations gathered for this study are summarized in Table 3. Ammonia was detected in 11 of 24 samples collected (MDL is 0.045 mg/L). None of these samples exceeded the event-specific chronic or the acute criteria (USEPA 2013). Table 3. Ammonia concentrations in Swift Creek during 2014-2015 sampling events and corresponding CMC and CCC values in mg/L (USEPA 2013). Location Flow Sampling Date Ammonia as N H SU Temp (°C) CMC CCC NC 50 Base 11/4/14 0.063 6.51 14.8 32.5 2.97 NC 50 Base/High 11/19/14 0.25 7.22 9.1 19.3 3.44 NC 50 Base 2/6/15 <0.045 7.15 6.6 20.8 4.20 NC 50 Base/Low 4/7/15 <0.045 7.32 18.4 13.6 1.77 NC 50 Low 5/7/15 0.051 6.86 22.5 152 1.68 NC 50 Low 6/9/15 0.072 7.01 25.7 10.4 1.30 NC 50 High 7/1/15 <0.045 7.42 29.7 4.64 0.80 NC 50 High 7/10/15 0.069 7.17 29.8 629 0.93 SR 1555 Base/High 11/19/14 0.35 723 5.9 19.1 4.20 SR 1555 Base 12/16/14 <0.045 - - - - SR 1555 Base 2/6/15 <0.045 728 52 17.9 4.26 SR 1555 Base/Low 4/7/15 <0.045 723 17.7 16.0 1.96 SR 1555 Low 5/7/15 0.078 6.81 21 17.8 1.88 SR 1555 Low 6/9/15 <0.045 7.05 24 11.5 1.43 SR 1555 High 7/1/15 0.073 7.14 262 8.76 1.19 SR 1555 High 7/10/15 0.06 7.02 27.7 8.70 1.14 NC 210 Base 11/4/14 <0.045 6.56 10 31.8 4.02 NC 210 Base/High 11/19/14 0.58 8.16 5.7 4.13 1.53 NC 210 Base 2/6/15 <0.045 7.56 5.2 12.1 3.43 NC 210 Base/Low 4/7/15 <0.045 7.38 17.6 13.3 1.79 NC 210 Low 5/7/15 0.06 7.12 20 15.0 1.79 NC 210 Low 6/9/15 <0.045 7.47 23.6 7.16 1.13 NC 210 High 7/1/15 <0.045 6.98 25.5 10.8 1.33 NC 210 High 7/10/15 <0.045 7.5 26.1 5.57 0.94 No sample exceeds the event-specific acute or chronic criteria according to USEPA 2013 recommended criteria. Other metals and compounds were analyzed far this study, statistical information for which is provided in Table 4 along with corresponding North Carolina water quality standards (NCDWR 2003, NC Register 2014). As illustrated in Table 4, none of the provided parameters exceeded North Carolina water quality standards. Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 7 Table 4. Statistical information for other metals and compounds analyzed for this study, as compared to water quality standards (NCDWR 2003). Parameter Median Maximum NCDWR Water ............4....4:.... ............4..�.4:.... /1....1:4., C`4....d.....7 Cadmium i Chloride (� Lead (u� Nickel (u Sulfate (n Zinc (ug *indicates MDL 0.36 0.36 2 7.25 11 230 <2.10* <2.10* 25 2.02 2.02 88 3.85 49 250 6.14 16.7 50 3.2. Ward et al. Ammonia Update Ammonia concentrations documented in the 2007 Ward et al. study have been updated with the EPA 2013 water quality criteria, using both pH and temperature measurements. Table 5 provides the event-specific CMC and CCC for ammonia expected to be protective for freshwater mussels (USEPA 2013). None of these samples exceeded the event-specific chronic or the acute criteria (USEPA 2013). Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 8 Table 5. Ammonia concentrations measured in Ward et al. from 2002-2003 compared to CMC and CCC (USEPA 2013). Sam le Site Date Ammonia as N H SU Tem °C CMC CCC SC1 07/11/02 0.10 7.1 28.5 7.54 1.05 SC1 09/30/02 0.14 6.3 23.0 18.82 1.79 SC1 O1/09/03 0.32 6.4 7.5 33.74 4.82 SC1 03/19/03 0.06 7.1 5.0 21.94 4J6 SC1 OS/12/03 0.30 7.3 25.2 7.91 1.16 SC1 07/16/03 0.07 6.9 27.2 10.01 1.23 SC2 07/11/02 0.11 7.0 24.5 11.54 1.41 SC2 09/30/02 0.09 6.6 21.8 18.74 1.87 SC2 O1/09/03 0.45 7.0 7.5 24.10 4.22 SC2 03/19/03 0.02 7.1 4.7 21.94 4.85 SC2 OS/12/03 0.18 7A 23.0 13.07 1.56 SC2 07/16/03 0.10 69 25.9 11.15 1.34 SC3 07/11/02 0.06 7.2 26.0 834 1.17 SC3 09/30/02 0.14 7.1 22.0 12.93 1.59 SC3 O1/09/03 0.04 6.7 8.8 29.76 4.24 SC3 03/19/03 0.02 7.0 5.0 24.]0 4.96 SC3 OS/12/03 0.14 7.0 23.2 12.86 1.54 SC3 07/16/03 0.07 6.9 26.0 11.06 133 SC4 07/11/02 0.04 7.1 25.4 9.75 1.28 SC4 09/30/02 0.10 7.4 23.0 8.32 1.25 SC4 O1/09/03 0.03 7.3 82 17.51 3.47 SC4 03/19/03 0.02 7.1 6.5 21.94 4.32 SC4 OS/12/03 0.10 7.1 23.5 11.42 1.44 SC4 07/16/03 0.04 7.1 25.0 10.08 1.31 WO1 07/11/02 0.04 7.1 24.5 10.51 1.35 WO1 09/30/02 0.03 6.8 21.0 17.95 1.88 WO1 O1/09/03 0.02 6.7 7.2 29.76 4.70 WO1 03/19/03 0.02 6.8 5.2 28.05 5.22 WO1 OS/12/03 0.10 6.8 22.0 16.52 1.77 WO1 07/16/03 0.02 6.6 24.0 15.61 1.62 W02 07/11/02 0.05 7.0 23.0 13.07 1.56 No sample exceeds the event-specific acute or chronic criteria accarding to USEPA 2013 recommendations. 3.3.BLMAnalysis Table 6 provides the copper concentrations far each sampling event and compares them to the state water quality standards, and also provides the BLM-derived event specific criteria for comparison. Only one sample result exceeded either the CMC or CCC, the NC 50 crossing of Swift Creek on November 19, 2014. The CMC and CCC values vary between sampling events, indicating changing conditions in the watershed over time (and throughout seasons), and between sampling sites. Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 9 Table 6. Comparison of Swift Creek total and dissolved copper concentrations to water quality criteria and BLM-derived CMC and CCC (in ug/L) Flow Sampling Total Dissolved NCDWR NCDWR Location Date Co er Co er Acute std Chronic std CMC CCC NC 50 Base 11/4/14 1.98 <1.60 3.10 2.36 4.79 2.98 Base/High 11/19/14 <1.60 1.96*� 3.35 2.54 1.96 1.22 Base 2/6/15 2.46 2.24* 2.91 223 12.02 7.47 Base/Low 4/7/15 5.91 4.92� 3.90 2.92 18.94 11.77 Low 5/7/15 2.03 1.75 3.49 2.64 9.35 5.81 Low 6/9/15 5.53 2.79 4.36 323 11.72 7.28 High 7/1/15 <1.60 <1.60 4.12 3.06 21.89 13.59 High 7/10/15 <1.60 <1.60 4.06 3.03 15.22 9.45 SR 1555 Base/High 11/19/14 <1.60 <1.60 3.56 2.68 121 0.75 Base 12/16/14 <1.60 <1.60 3.39 2.57 12.32 7.66 Base 2/6/15 2.75 <1.60 3.00 2.30 12.18 7.56 Base/Low 4/7/15 4.13 4.17* 3.71 2.79 13.01 8.08 Low 5/7/15 <1.60 <1.60 323 2.46 7.04 4.37 Low 6/9/15 1.69 <1.60 3.79 2.84 8.85 5.50 High 7/1/15 <1.60 <1.60 3.90 2.92 12.82 7.96 High 7/10/15 <1.60 <1.60 3.48 2.63 10.59 6.58 NC 210 Base 11/4/14 <1.60 <1.60 3.82 2.86 420 2.61 Base/High 11/19/14 <1.60 <1.60 3.82 2.86 3.14 1.96 Base 2/6/15 <1.60 <1.60 3.03 232 17.75 11.03 Base/Low 4/7/15 4.65 4.13* 4.05 3.02 17.11 10.63 Low 5/7/15 2.01 <1.60 3.48 2.63 12.37 7.68 Low 6/9/15 1.74 1.66 4.02 3.00 16.52 10.26 High 7/1/15 <1.60 <1.60 3.97 2.96 10.84 6.74 High 7/10/15 1.61 <1.60 334 2.53 21.53 13.37 * Dissolved copper concentrations exceed either the event-specific acute or chronic North Carolina Water Quality Standard ** Sample exceeds the BLM-derived event-specific CMC/CCC for copper. As mentioned at the beginning of Section 3.0, the method blank associated with the copper samples taken April 7, 2015 contained low levels of copper. We have assumed that this blank was contaminated in the lab, and that the samples were not compromised. This assumption leads to state water quality standards for copper for acute and chronic levels being exceeded by all three of the April 7th samples, and yet these samples do not exceed the BLM-derived CMC or CCC. If, however, we were to think the samples were somehow contaminated and results reflected artificially high copper levels, we could subtract out the blank level of dissolved copper (3.11 ug/L). This would reduce the sample results significantly (1.81, 1.06, and 1.03 ug/L for NC 50, SR 1555, and NC 210, respectively) and put the results below the state water quality standards. However, there were other samples containing elevated levels of copper, and the other eight of the total of nine batches of samples had clean blanks. Therefore, we believe these results are accurate and yet show copper to be at safe levels according to the BLM results. Table 7 provides statistics far the water quality parameters. Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 10 Table 7. Statistics for water uality parameters collected in Swift Creek (n=24 for all arameters) Parameter Median Maximum Minimum 10`h percentile 90t" percentile Temperature 20 29.8 5.2 5.74 27.4 �°C) pH 7.17 8.16 6.51 6.82 7.49 DOC (mg/L) 5.1 6.2 0.44 1.81 5.97 Ca (mg/L) 6.3 8 8.18 5.01 5.26 7.27 Mg (mg/L) 2.22 2.66 1.74 1.85 2.48 Na (mg/L) 7.46 8.62 4.29 4.95 8.39 K(mg/L) 2.5 3.77 2.08 2.17 3.20 SO4 (mg/L) 3.85 4.9 3.2 3.7 4.47 Cl (mg/L) 7.25 ll 4.9 5.23 9.58 CaCO3 (mg/L) 25.5 35 19 20.3 30.7 A sensitivity analysis was performed, in which the median of each parameter was used in the BLM. Then each parameter was individually changed to the maximum and minimum values observed to see how each parameter altered the outcome (CMC and CCC values). The results of this analysis (Table 8) indicate that, as reported by Augspurger (2012), pH and dissolved organic carbon have the most influence on the results of the model. Table 8. Results of sensitivity analysis of Swift Creek water quality data in the BLM analysis of water quality criteria for copper. Dissolved organic carbon and pH (shaded) are the parameters with the most influence on the model output. CMC (ug/L) CCC (ug/L) % Deviation from Median CCC All medians 12.7823 7.9393 max T 13.1127 8.1445 2.6 min T 12.5694 7.8071 -1.7 max pH 42.5758 26.4446 233.1 min pH 4.0797 2.5339 -68.1 max DOC 15.6736 9.7352 22.6 min DOC 1.0844 0.6735 -91.5 max Ca 12.6425 7.8525 -l.l min Ca 12.938 8.036 1.2 max Mg 12.7727 7.9334 -0.1 min Mg 12.795 7.9472 0.1 max Na 12.957 8.0478 1.4 min Na 12.2739 7.6235 -4.0 max K 12.7569 7.9235 -0.2 min K 12.7823 7.9393 0.0 max SO4 12.7569 7.9235 -0.2 min SO4 12.7918 7.9452 0.1 max Cl 12.7124 7.8959 -0.5 min Cl 12.8172 7.961 0.3 max Alk 12.6806 7.8762 -0.8 min Alk 12.8458 7.9788 0.5 3.4. USGS and City oiRaleigh Water QUality Monitoring There are limited datasets available with which to compare the information generated in this study. The data that are available include City of Raleigh and USGS datasets that cover some of Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 11 these parameters to varying degrees. The most common parameters that are monitored regularly include temperature, pH, and ammonia. The City of Raleigh has been monitoring water quality conditions below Lake Benson since 2009, corresponding to the opening of the Dempsey E. Benton Water Treatment Plant. A USGS gauge located below Lake Benson monitored water quality from 1989 to 1995 and then again from 2005 to 2011 (Figure 1). Analysis of ammonia and copper was performed using the available data from these organizations (Appendix C). The City of Raleigh monitoring program includes collections measuring temperature, pH, DO, conductivity, fecal coliform, turbidity, ammonia, total nitrogen, and total phosphorous. The City monitors these parameters at a number of locations, in coordination with other local non-profits, including five stations in the Lower SCW. Though this information is broken down by site, it is apparent that measurements are fairly consistent throughout the watershed. During monthly sampling beginning August 2009 and continuing through the present, no sample exceeded the event-specific acute or chronic criteria according to USEPA 2013 recommendations at stations J4500000, J4510000, J4511000, and J4520000 for ammonia. Sampling for station J4580000 took place between May 2012 and present, with no sample exceeding the event-specific acute or chronic criteria according to USEPA 2013 recommendations. The USGS station (02087701) collected water quality data, including temperature, pH, DO, ammonia, hardness, and copper, among other parameters. Ammonia was measured approximately four times per year between April and November. During this period, two samples exceeded the event-specific chronic criteria, according to USEPA 2013 recommendations (on August 30, 2006 and August 20, 2009). The recommended acute criteria was not exceeded at this station during the sampling period. This gauge also collected some hardness and copper data. Copper was measured above the NCDWR recommended event- specific chronic standard thirteen times during the sampling period, and was measured above the event-specific acute standard seven times during the sampling period (Appendix C). When the BLM is used to derive acute and chronic water quality standards, however, there is only one day on which the chronic standard is exceeded (April 15, 2010, Table 9). Interestingly, station 02087701 is directly downstream of the Lake Benson dam and the Dempsey E. Benton WTP (Figure 1), though the WTP was constructed in 2010, so it does not explain all of the elevated copper levels in Swift Creek during this sampling period. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 12 Table 9. USGS Gauge 02087701 BLM results Sample Date Cu u/L CMC CCC 10/18/1989 0.96 5.6969 3.5384 6/20/1990 2.88 23.4103 14.5406 8/14/1990 2.88 82.864 51.4683 9/5/1990 5.76 37.8734 23.5239 9/5/1990 2.88 33.2663 20.6623 10/24/1990 1.92 9.157 5.6876 4/25/1991 2.88 7.1966 4.4699 6/11/1991 1.92 134.4316 83.4979 7/23/1991 192 26.7688 16.6266 8/6/1991 3.84 20.0361 12.4448 9/17/1991 2.88 14.606 9.0721 4/16/1992 4.8 22.8607 14.1992 6/2/1992 0.96 15.1239 93938 8/13/1992 1.92 152669 9.4826 10/15/1992 0.96 30.4576 189178 4/26/1993 1.92 49.5023 30.7468 6/25/1993 1.92 8.0672 5.0107 8/4/1993 0.96 15.788 9.8062 10/14/1993 0.96 12.9189 8.0242 11/15/1993 0.96 15.7785 9.8003 4/22/1994 1.92 13.6179 8.4583 6/21 / 1994 1.92 19.6611 l 2 2119 8/2/1994 1.92 10.1102 6.2796 12/6/1994 3.84 12.5599 7.8012 5/U1995 1.92 19.1845 119159 6/16/1995 1.92 8.9187 5.5396 10/19/2005 0.768 18.8636 11.7165 4/20/2006 1.248 7.7272 4.7995 10/15/2009 2.592 9.2269 5.731 4/15/2010 8.352* 10.2277 6.3526 10/14/2010 1.728 15.5847 9.6799 4/25/20ll 1.344 11.0157 6.842 * Denotes copper exceeding BLM-derived chronic standard. 4.0 CONCLUSION Both ammonia and copper have been detected in Swift Creek during the sampling period from November 2014 to July 2015. These parameters have been identified as the most significant toXicants to freshwater mussels (USEPA 2008), and the detection of them is cause far concern if detected at concentrations in excess of those thought to be safe for mussels. Whether or not the Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 13 levels of ammonia and copper are high enough to be detrimental to mussels is still in question. To fully answer the question of whether water quality conditions in Swift Creek are harmful to DWM, long-term toxicity analysis on DWM analyzing growth, survival, and reproduction is needed. In the absence of that data, similar analysis on other species of the same genus and/or associate species could be done instead. Such analysis is outside the scope of this report. Considering that mussels still exist in Swift Creek suggests that they are not severely impacted by water quality conditions. Population trend analysis, however, suggests that the overall mussel fauna has been in a slow decline since the early 1990's when periodic monitoring began. This decline coincides with land use changes during this period in the SCW, most notably with increases in residential and commercial development (Catena 2014). Copper concentrations in Swift Creek appear to be mostly dependent on organic carbon and pH. Since the potential for toxicity can be determined by measuring only a few additional water quality parameters, monitoring could continue at less cost into the future to examine how mussel populations respond to changing water quality conditions. Studying the watershed for less than a year cannot provide a full assessment of the relationship between water quality and mussel populations. Long-term monitoring is needed to get a clearer picture of this relationship. Ammonia concentrations do not appear to be of concern in Swift Creek, with some elevated concentrations limited to directly below Lake Benson. The long-term monitoring of Swift Creek by the USGS has demonstrated that event-specific criteria for ammonia are rarely exceeded. Monitoring efforts, however, could be improved to fill in gaps and better understand how to best reduce ammonia contamination. Other pollutants that were measured, including some heavy metals, did not appear to be at toxic levels to aquatic arganisms. As has been discussed, metal toxicity is mare complex than just a simple measurement of water conditions at a single sampling. Future analysis may be possible, particularly with the use of the BLM, to determine toxicity to freshwater mussels and other aquatic organisms. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 14 5.0 RESOURCES Adams, W.J., Chapman, P.M. (2007). Assessing the HazaNds ofMetals and Inorganic Metal Substances in Aquatic and Terrestrial Systems. CRC Press, Boca Raton, FL. 184 pp. Augspurger T. 2012 (draft). Evaluation of Copper Concentrations in Goose Creek with regard to Conservation of Freshwater Mussels. U.S. Fish and Wildlife Service, Ecological Services, Raleigh, NC. Augspurger, T., Keller, A.E., Black, M.C., Cope, W.G, Dwyer, F.J. (2003). Water quality guidance for protection of freshwater mussels (Unionidae) from ammonia exposure. Envion Tocico Chem 26: 2569-2575. Catena. (2014). Dwarf Wedgemussel Viability Study: Phase 1. Complete 540 — Triangle Expressway Southeast Extension. Swift Creek Watershed, Wake and Johnston Counties, North Carolina. HydroQual, Inc. (2005). The Biotic Ligand Model Windows Interface, Version 2.2.3: User's Guide and Reference ManuaL Mahwah, NJ. NCDWR. (2003). Surface Waters and Wetlands Standards. NC Administrative Code 15A NCAC 02B .0100 & .0200. NC Register. (2014). Volume 28, Issue 24, Pages 2975-3111. June 16, 2014. Accessed September 4, 2015. http: //www. ncoah. com/rules/register/Volume%2028 %20Issue%2024%20June%2016%2 02014.pdf USEPA. (1993a). Method 350.1 Determination of Ammonia Nitrogen by Semi-automated Colorimetry. Revision 2.0. Office of Research and Development. Cincinnati, OH. USEPA. (1993b). Method 300.0 Determination of Inorganic Anions by Ion Chromatography. Revision 2.1. Office of Research and Development. Cincinnati, OH. USEPA. (1996). 1995 Updates: Water Quality Criteria Documents for the Protection of Aquatic Life in Ambient Water. EPA-820-B-96-001. Technical Report. Office of Water, Washington, DC. USEPA. (1999). 1999 Update of ambient water quality criteria far ammonia. EPA 822/R99/014 Technical Report, Ofiice of Water, Washington, DC. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 15 USEPA. (2000). Method 6010C Inductively Coupled Plasma-Atomic Emission Spectrometry. Revision 3. USEPA. (2007). Aquatic Life Ambient Freshwater Quality Criteria — Copper. EPA 822-R-07- 00 L Final Report. Office of Water, Washington, DC. USEPA. (2008). An introduction to Freshwater Mussels as Biological Indicators — Including Accounts of Interior Basin, Cumberlandian, and Atlantic Slope Species. EPA-260-R-08- 015. Office of Environmental Information, Washington, DC. USEPA (2013). Aquatic Life Ambient Water Quality Criteria For Ammonia— Freshwater 2013. EPA-822-R-13-OOL Office of Water, Office of Science and Technology, Washington, DC. USFWS (1992a). Special report on the status of freshwater mussels. USFWS (1992b). Endangered and Threatened species of the southeast United States (The Red Book). FWS, Ecological Services, Div. of Endangered Species, Southeast Region. Govt Printing Office, Wash, DC: 1,070. USFWS. (1993). Dwarf Wedge Mussel (Alasmidonta heterodon) Recovery Plan. Hadley, MA: 43 pp. USFWS (1996). Revised Technical/Agency Draft Carolina Heelsplitter Recovery Plan. DOI, Atlanta, GA: 47. USFWS. (2006). Biological Opinion based on Review of Dempsey E. Benton Water Treatment Plant. USFWS. (2007). Dwarf Wedgemussel (Alasmidonta heterodon) 5-Year Review: Summary and Evaluation. Concard, NH. USFWS (2012). Carolina heelsplitter (Lasmigona decorate) 5-Year Review: Summary and Evaluation. Asheville, NC Ward, Sara; Augspurger, Tom; Dwyer, F. James; Kane, Cindy; Ingersoll, Christopher G. (2007). Risk Assessment of Water Quality in Three North Carolina, USA, Streams Supporting Federally Endangered Freshwater Mussels (Unionidae). Environmental Toxicology and Chemistry, Vol. 26, No 10, pp. 2075-2085. Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 16 a" _ - y � , `� ` .� r The '�'�%N334d�`��'� Catena _ Group Client: oF xaerx �Q w�~� 9o`v v9� eSQ ��ar oF TOP�Seo Dwarf Wedgemussel Viability Study: Phase 2 Water Quality Monitoring Stations Lower Swift Creek Watershed Wake & Johnston Counties, North Carolina Date: August 2015 Scale: 0 0.5 1 Miles � I � Job No.: 1175 Figure Appendix A— 2014-2015 Water Quality Laboratory Results Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 18 NC 50 (Benson Road) below Lake Benson in Garner Flow: Baseflow (30 High (50 Baseflow Baseflow (47 Low Flow Low Flow High High Flow cfs) cfs) (100 cfs) cfs) (39 cfs) (llcfs) Flow (53 (127 cfs) cfs) Date of Sampling 11/4/2014 11/19/2014 2/6/2015 4/7/2015 5/7/2015 6/9/2015 7/1/2015 7/10/2015 Anal e Result Result Result Result Result Result Result Result Cadmium (mg/L) ND ND ND ND ND ND ND ND Calcium (mg/L) 5.54 6.01 5.01 7 6.31 8.18 7.47 7.37 Copper (total, ug/L) 1.98 ND 2.46 5.91 2.03 5.53 ND ND Lead (ug/L) ND ND ND ND ND ND ND ND Magnesium (mg/L) 1.74 1.91 1.74 2.29 1.97 2.4 2.4 2.37 Nickel (ug/L) ND ND ND ND ND ND ND ND Potassium (mg/L) 3.25 3.25 2.42 2.57 2.5 2.99 2.72 2.48 Sodium (mg/L) 4.35 4.76 4.29 8.62 7.01 8.24 7.8 7.76 Zinc (ug/L) 6.33 6.14 ND ND ND 16.7 4.09 ND Ammonia (mg/L) 0.063 0.25 ND ND 0.051 0.072 ND 0.069 Chloride (mg/L) 5 7.2 4.9 11 8.8 9.9 9.7 9.3 Sulfate (mg/L) 3.8 3.7 4.5 4.9 4.2 4.1 4.1 4 Total Alkalinity (mg/L) 26 26 20 29 19 30 27 23 Total Organic Carbon 6.2 0.79 5.1 6.1 6 5.9 5.9 5.9 (mg/L) Dissolved Copper ND 1.96 2.24 4.92 1.75 2.79 ND ND (ug/L) Temperature (°C) 14.8 9.1 6.6 18.4 22.5 25.7 29.7 29.8 DO (%) 102.2 96.3 110 106.4 66 52.1 89.2 68.8 DO (mg/L) 10.2 11.29 13.25 9.9 5.72 4.16 6.82 5.25 Conductivity (us/cm) 71.5 73.7 65.1 93.2 90.9 103.8 9.99 96.8 pH 6.51 7.22 7.15 7.32 6.86 7.01 7.42 7.17 Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 19 SR 1555 (Barber Mill Rd) in Clayton Flow: High (50 Baseflow (38 Baseflow Baseflow Low flow (39 Low Flow High High cfs) cfs) (100 cfs) (47 cfs) cfs) (l lcfs) Flow Flow (53 cfs) (127 cfs) Date of Sampling ll/19/2014 12/16/2014 2/6/2015 4/7/2015 5/7/2015 6/9/2015 7/1/201 7/10/201 5 5 Anal� Result Result Result Result Result Result Result Result Cadmium (mg/L) ND ND ND ND ND ND ND ND Calcium (mg/L) 6.16 5.94 5.17 6.55 5.46 6.87 6.89 6.02 Copper (total, ug/L) ND ND 2.75 4.13 ND 1.69 ND ND Lead (ug/L) ND ND ND ND ND ND ND ND Magnesium (mg/L) 2.2 2.03 1.82 2.23 2.03 2.18 2.35 2.13 Nickel (ug/L) ND ND ND ND ND 2.02 ND ND Potassium (mg/L) 3.77 2.88 2.19 2.33 2.16 2.08 2.55 2.4 Sodium (mg/L) 7.79 6.91 5.5 8.04 7.5 8.52 7.55 7.34 Zinc (ug/L) ND ND ND ND ND ND ND ND Ammonia (mg/L) 0.35 ND ND ND 0.078 ND 0.073 0.06 Chloride (mg/L) 5.2 6.1 5.3 8.3 7.3 7.2 8.5 8 Sulfate (mg/L) 3.7 4 4.4 4 3.8 3.2 3.8 3.8 Total Alkalinity (mg/L) 26 20 22 30 21 32 29 22 Total Organic Carbon 0.46 4.2 43 4.8 4.9 4.2 53 5.2 (mg/L) Dissolved Copper (ug/L) ND ND ND 4.17 ND ND ND ND Temperature (°C) 5.9 5.2 17.7 21 24 26.2 27.7 DO (%) 95.7 106.7 96.8 89.6 92.6 84.4 73.2 DO (mg/L) 11.87 13.35 9.2 8 7.8 6.74 5.77 Conductivity (us/cm) 92.1 70.2 78.4 84.9 90.5 961 84.5 pH 7.23 7.28 7.23 6.81 7.05 7.14 7.02 Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 20 NC 210 upstream of Neuse River in Smithfield Flow: Baseflow (30 High (50 Baseflow Baseflow (47 Low Flow (39 Low Flow High High cfs) cfs) (100 cfs) cfs) cfs) (l lcfs) Flow Flow (53 cfs) (127 cfs) Date of Sampling ll/4/2014 11/19/2014 2/6/2015 4/7/2015 5/7/2015 6/9/2015 7/1/2015 7/10/2015 Anal e Result Result Result Result Result Result Result Result Cadmium (mg/L) ND ND ND ND ND 0.36 ND ND Calcium (mg/L) 6.44 6.46 5.05 6.85 5.79 7.03 7 5.59 Copper (total, ug/L) ND ND ND 4.65 2.01 1.74 ND 1.61 Lead (ug/L) ND ND ND ND ND ND ND ND Magnesium (mg/L) 2.48 2.47 1.95 2.66 227 2.49 2.42 2.15 Nickel (ug/L) ND ND ND ND ND ND ND ND Potassium (mg/L) 2.86 3.08 2.11 2.46 236 2.31 2.65 2.5 Sodium (mg/L) 6.95 7.42 5.39 8.46 7.07 8.03 7.64 6.62 Zinc (ug/L) 3.8 ND ND ND ND ND ND ND Ammonia (mg/L) ND 0.58 ND ND 0.06 ND ND ND Chloride (mg/L) 6.7 7.2 6 8.5 7.1 7.5 8.5 7 Sulfate (mg/L) 3.7 3.7 4.6 4.2 3.8 3.3 3.9 3.7 Total Alkalinity (mg/L) 31 35 22 26 25 23 23 22 Total Organic Carbon 4.8 0.44 4.4 5.1 53 4.3 5.7 53 (mg/L) Dissolved Copper (ug/L) ND ND ND 4.13 ND 1.66 ND ND Temperature (°C) 10 5.7 5.2 17.6 20 23.6 25.5 26.1 DO (%) 99.4 102.6 104.1 93.35 84.9 73.5 85.7 75.2 DO (mg/L) 11.18 12.8 13.08 8.72 7.6 6.16 6.9 6.16 Conductivity (us/cm) 92.1 94.8 72.8 86.6 87.5 96.2 94.9 80 pH 6.56 8.16 7.56 7.38 7.12 7.47 6.98 7.5 Water Quality Study February 2016 Complete 540 - Triangle Expressway Southeast Extension Page 21 Appendix B— ENCO Laboratory Reports Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 22 =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, November 20, 2014 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C414241 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, November 4, 2014. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 11 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: Swift Creek 210 Lab ID: C414241-03 Sampled: 11/04/14 14:05 Received: 11/04/14 14:48 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 12/02/14 11/06/14 07:22 11/06/14 14:51 EPA 350.1 12/02/14 11/07/14 08:56 11/07/14 13:24 EPA 6010C OS/03/15 11/11/14 14:04 11/13/14 10:33 SM 5310B-2000 12/02/14 11/12/14 OS:06 11/12/14 15:00 Client ID: Swift Creek 210 Lab ID: C414241-01RE1 Sampled: 11/04/14 14:05 Received: 11/04/14 14:48 Parameter Hold Date/Time(s� Prep Date/Time(s� Analysis Date/Time(s) EPA 310.2 11/18/14 11/OS/14 09:04 11/OS/14 13:23 Client ID: Swift Creek 50 Lab ID: C414241-02 Sampled: 11/04/14 13:05 Received: 31/04/14 14:48 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 12/02/14 11/06/14 07:22 11/06/14 15:59 EPA 350.1 12/02/14 11/07/14 08:56 11/07/14 13:26 EPA 6010C OS/03/15 11/11/14 14:04 11/13/14 10:35 SM 5310B-2000 12/02/14 11/12/14 08:06 11/12/14 15:00 Client ID: Swift Creek 50 Lab ID: C414241-02RE1 Sampled: 11/04/14 13:05 Received: 31/04/14 14:48 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 310.2 11/18/14 11/OS/14 09:04 11/OS/14 13:24 Client ID: Swift Creek 230 Dissolved Lab ID: C414241-03 Sampled: 11/04/14 14:05 Received: 11/04/14 14:48 Parameter Hold Date/Time(sl Pren Date/Time(sl Analvsis Date/Time(s) EPA 6010C O5/03/15 11/11/14 14:04 11/13/14 10:38 Client ID: Swift Creek 50 Dissolved Lab ID: C414241-04 Sampled: 11/04/14 13:05 Received: 11/04/14 14:48 Parameter Hold Date/Time(s) Pre� Date/Time(s) Analvsis Date/Time(s) EPA 6010C OS/03/15 11/11/14 14:04 11/13/14 10:40 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 11 �� www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: Swift Creek 210 Lab ID: C414241-OS Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 6440 39.0 100 ug/L EPA 6010C R-OS Chloride 6.7 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2480 23.0 100 ug/L EPA 6010C R-OS Potassium - Total 2560 150 500 ug/L EPA 6010C R-OS Sodium - Total 6950 400 500 ug/L EPA 6010C R-OS Sulfate as SO4 3.7 J 2.9 5.0 mg/L EPA 300.0 Total Organic Carbon - Dissolved 4.8 0.32 1.0 mg/L SM 5310B-2000 Zinc - Total 3.80 JB 3.80 10.0 ug/L EPA 6010C J-01, R-OS Client ID: Swift Creek 210 Lab ID: C414241-OSRE3 Anal e Results Flaa MDL Q Units Method Notes Total Alkalinity as CaCO3 31 14 15 mg/L EPA 310.2 Client ID: Swift Creek 50 Lab ID: C414241-02 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.063 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 5540 39.0 100 ug/L EPA 6010C Chloride 5.0 2.2 5.0 mg/L EPA 300.0 Copper - Total 1.98 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 1740 23.0 100 ug/L EPA 6010C Potassium - Total 3250 150 500 ug/L EPA 6010C Sodium - Total 4350 400 500 ug/L EPA 6010C Sulfate as SO4 3.8 J 2.9 5.0 mg/L EPA 300.0 Total Organic Carbon - Dissolved 6.2 0.32 1.0 mg/L SM 5310B-2000 Zinc - Total 6.33 JB 3.80 10.0 ug/L EPA 6010C J-01 Client ID: Swift Creek 50 Lab ID: C414241-02RE3 Analvte Results Flaa MDL Q Units Method Notes Total Alkalinity as CaCO3 26 14 15 mg/L EPA 310.2 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 11 �� www.encolabs.com ANALYTICAL RESULTS Description: Swift Creek 210 Lab Sample ID:C414241-01 Received: 11/04/14 14:48 Matrix: Water Sampled: ll/04/14 14:05 Work Order: C414241 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Calcium [7440-70-2]^ 6440 ug/L 1 39.0 100 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Magnesium [7439-95-4]^ 2480 ug/L 1 23.0 100 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Potassium [7440-09-7]^ 2860 ug/L 1 150 500 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Sodium [7440-23-5]^ 6950 ug/L 1 400 500 4K11023 EPA 6010C 11/13/14 10:33 ]DH R-OS Zinc[7440-66-6]^ 3.80 ]B ug/L 1 3.80 10.0 4K11023 EPA 6010C 11/13/14 10:33 ]DH J-01, R-O5 Classical Chemistry Parameters ^- ENCO Cary cerfified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 4K07017 EPA 350.1 11/07/14 13:24 SHA Chloride [16887-00-6]^ 6.7 mg/L 1 2.2 5.0 4K06002 EPA 300.0 11/06/14 14:51 CV Sulfate as 504 [14808-79-8]^ 3.7 J mg/L 1 2.9 5.0 4K06002 EPA 300.0 11/06/14 14:51 CV Total Alkalinity as CaCO3 [471-34-1]^ 31 mg/L 1 14 15 4K05003 EPA 310.2 11/OS/14 13:23 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certiBed analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Total Organic Carbon^ 4.8 mg/L 1 0.32 1.0 4K12005 SM 5310B-2000 11/12/14 15:00 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 11 �� www.encolabs.com ANALYTICAL RESULTS Description: Swift Creek 50 Lab Sample ID:C414241-02 Received: 11/04/14 14:48 Matrix: Water Sampled: ll/04/14 13:05 Work Order: C414241 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4K11023 EPA 6010C 11/13/14 10:35 ]DH Calcium [7440-70-2]^ 5540 ug/L 1 39.0 100 4K11023 EPA 6010C 11/13/14 10:35 ]DH Copper[7440-50-8]^ 1.98 J ug/L 1 1.60 10.0 4K11023 EPA 6010C 11/13/14 10:35 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4K11023 EPA 6010C 11/13/14 10:35 ]DH Magnesium [7439-95-4]^ 1740 ug/L 1 23.0 100 4K11023 EPA 6010C 11/13/14 10:35 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4K11023 EPA 6010C 11/13/14 10:35 ]DH Potassium [7440-09-7]^ 3250 ug/L 1 150 500 4K11023 EPA 6010C 11/13/14 10:35 ]DH Sodium [7440-23-5]^ 4350 ug/L 1 400 500 4K11023 EPA 6010C 11/13/14 10:35 ]DH Zinc[7440-66-6]^ 6.33 ]B ug/L 1 3.80 10.0 4K11023 EPA 6010C 11/13/14 10:35 ]DH ]-01 Classical Chemistry Parameters ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.063 J mg/L 1 0.045 0.10 4K07017 EPA 350.1 11/07/14 13:26 SHA Chloride [16887-00-6]^ 5.0 mg/L 1 2.2 5.0 4K06002 EPA 300.0 11/06/14 15:59 CV Sulfate as SO4 [14808-79-8]^ 3.8 J mg/L 1 2.9 5.0 4K06002 EPA 300.0 11/06/14 15:59 CV Total Alkalinity as CaCO3 [471-34-1]^ 26 mg/L 1 14 15 4K05003 EPA 310.2 11/OS/14 13:24 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 6.2 mg/L 1 0.32 1.0 4K12005 SM 5310B-2000 11/12/14 15:00 RSA Description: Swift Creek 210 Dissolved Lab Sample ID:C414241-03 Received: 11/04/14 14:48 Matrix: Water Sampled: ll/04/14 14:05 Work Order: C414241 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K11023 EPA 6010C 11/13/14 10:38 ]DH Description: Swift Creek 50 Dissolved Lab Sample ID:C414241-04 Received: 11/04/14 14:48 Matrix: Water Sampled: ll/04/14 13:05 Work Order: C414241 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL Q Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K11023 EPA 6010C 11/13/14 10:40 JDH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 11 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4K11023 - EPA 3005A Blank (4K33023-BLKl) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 09:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 2.10 U 10.0 ug/L Magnesium 23.0 U 100 ug/L Nickel 9.60 J 50.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 4.00 J 10.0 ug/L LCS (4K31023-BS3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 21.2 1.00 ug/L 20.0 106 80-120 Calcium 2140 100 ug/L 2000 107 80-120 Copper 201 10.0 ug/L 200 101 80-120 Lead 210 10.0 ug/L 200 105 80-120 Magnesium 2090 100 ug/L 2000 105 80-120 Nickel 213 B 10.0 ug/L 200 106 80-120 Potassium 10600 500 ug/L 10000 106 80-120 Sodium 10600 500 ug/L 10000 106 80-120 Zinc 218 B 10.0 ug/L 200 109 80-120 Matrix Spike (4K31023-MS3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:00 Source: C414425-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.8 1.00 ug/L 20.0 0.360 U 104 75-125 Calcium 9870 100 ug/L 2000 7880 100 75-125 Copper 199 10.0 ug/L 200 1.60 U 99 75-125 Lead 208 10.0 ug/L 200 2.10 U 104 75-125 Magnesium 4720 100 ug/L 2000 2690 lOZ 75-125 Nickel 211 B 10.0 ug/L 200 1.80 U 105 75-125 Potassium 14200 500 ug/L 10000 3590 106 75-125 Sodium 36500 500 ug/L 10000 26000 105 75-125 Zinc 217 B 10.0 ug/L 200 3.80 U 108 75-125 Matrix Spike Dup (4K11023-MSD3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:02 Source: C414425-03 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc FINAL Spike Source %REC RPD Result F� � Units Level Result %REC Limits RPD Limit 20.8 1.00 ug/L 20.0 0.360 U 104 75-125 0.07 20 9340 100 ug/L 2000 7880 73 75-125 6 20 201 10.0 ug/L 200 1.60 U 100 75-125 1 20 207 10.0 ug/L 200 2.10 U 104 75-125 0.4 20 4520 100 ug/L 2000 2690 92 75-125 4 20 210 B 10.0 ug/L 200 1.80 U 105 75-125 0.2 20 13600 500 ug/L 10000 3590 100 75-125 4 20 34500 500 ug/L 10000 26000 85 75-125 6 20 217 B 10.0 ug/L 200 3.80 U 108 75-125 0.04 20 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Notes QM-OS Page 6 of 11 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4K11023 - EPA 3005A - Continued Post Spike (4K33023-PS3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:05 Source: C414425-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0194 0.00100 mg/L 0.0200 0.000144 96 80-120 Calcium 9.18 0.100 mg/L 2.00 7.88 65 80-120 QM-08 Copper 0.183 0.0100 mg/L 0.200 0.000187 92 80-120 Lead 0.193 0.0100 mg/L 0.200 -0.000900 96 80-120 Magnesium 4.50 0.100 mg/L 2.00 2.69 91 80-120 Nickel 0.199 B 0.0100 mg/L 0.200 -0.000247 99 80-120 Potassium 12.7 0.500 mg/L 10.0 3.59 91 80-120 Sodium 33.6 0.500 mg/L 10.0 26.0 76 80-120 QM-08 Zinc 0.203 B 0.0100 mg/L 0.200 0.00329 100 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 4K11013 - EPA 3005A Blank (4K13023-BLKS) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 09:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L Blank (4K13023-BLK2) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 09:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (4K31023-BS3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 09:54 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 201 10.0 ug/L 200 101 80-120 Matrix Spike (4K31023-MSl) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:00 Source: C414425-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 199 10.0 ug/L 200 1.60 U 99 75-125 Matrix Spike Dup (4K11023-MSD3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:02 Source: C414425-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 201 10.0 ug/L 200 1.60 U 100 75-125 1 20 Post Spike (4K31023-PS3) Prepared: 11/11/2014 14:04 Analyzed: 11/13/2014 10:05 Source: C414425-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 0.183 0.0100 mg/L 0.200 0.000187 92 80-120 Classical Chemistry Parameters - Quality Control Batch 4K05003 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 11 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4K05003 - NO PREP - Continued Blank (4K05003-BLKl) Prepared: 11/OS/2014 09:04 Analyzed: 11/OS/2014 12:09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (4K05003-BS3) Prepared: 11/O5/2014 09:04 Analyzed: 11/OS/2014 12:10 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 103 80-120 Matrix Spike (4K05003-MSl) Prepared: 11/OS/2014 09:04 Analyzed: 11/OS/2014 12:12 Source: C413508-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 680 75 mg/L 200 490 99 80-120 Matrix Spike Dup (4K05003-MSD3) Prepared: 11/OS/2014 09:04 Analyzed: 11/OS/2014 12:14 Source: C413508-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 650 75 mg/L 200 490 82 80-120 5 25 Batch 4K06002 - NO PREP Blank (4K06002-BLKl) Prepared: 11/06/2014 07:22 Analyzed: 11/06/2014 08:36 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (4K06002-BS3) Prepared: 11/06/2014 07:22 Analyzed: 11/06/2014 09:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 48 5.0 mg/L 50.0 96 90-110 Sulfate as 504 47 5.0 mg/L 50.0 93 90-110 Matrix Spike (4K06002-MSl) Prepared: 11/06/2014 07:22 Analyzed: 11/06/2014 11:27 Source: C413477-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 30 5.0 mg/L 20.0 12 95 90-110 Sulfate as 504 31 5.0 mg/L 20.0 13 90 90-110 Matrix Spike Dup (4K06002-MSD3) Prepared: 11/06/2014 07:22 Analyzed: 11/06/2014 12:18 Source: C413477-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 31 5.0 mg/L 20.0 12 97 90-110 1 10 Sulfate as SO4 31 5.0 mg/L 20.0 13 92 90-110 1 10 Batch 4K07017 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 11 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4K07017 - NO PREP - Continued �� www.encolabs.com Blank (4K07017-BLKl) Prepared: 11/07/2014 08:56 Analyzed: 11/07/2014 12:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (4K07017-BS3) Prepared: 11/07/2014 08:56 Analyzed: 11/07/2014 12:32 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 1.0 0.10 mg/L 0.997 101 90-110 Matrix Spike (4K07017-MSl) Prepared: 11/07/2014 08:56 Analyzed: 11/07/2014 12:36 Source: C411942-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 11 1.0 mg/L 3.98 6.6 100 90-110 Matrix Spike Dup (4K07017-MSD3) Prepared: 11/07/2014 08:56 Analyzed: 11/07/2014 12:38 Source: C411942-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 11 1.0 mg/L 3.98 6.6 100 90-110 0.2 10 Classical Chemistry Parameters (Dissolved) - Quality Control Batch 4KZ2005 - NO PREP Blank (4K12005-BLKl) Prepared: 11/12/2014 08:06 Analyzed: 11/12/2014 15:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.32 U 1.0 mg/L LCS (4K32005-BS3) Prepared: 11/12/2014 08:06 Analyzed: 11/12/2014 15:00 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 38 1.0 mg/L 40.0 96 85-115 Matrix Spike (4K32005-MSl) Prepared: 11/12/2014 08:06 Analyzed: 11/12/2014 15:00 Source: A406493-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 34 1.0 mg/L 40.0 2.0 80 85-115 QM-07 Matrix Spike Dup (4K12005-MSD3) Prepared: 11/12/2014 08:06 Analyzed: 11/12/2014 15:00 Source: A406493-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 33 1.0 mg/L 40.0 2.0 77 85-115 3 21 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 11 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. 7-03 Result is estimated due to positive results in the associated method blank. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-08 Post-digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). R-05 The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 11 �' �f ��" �P�.. i� �P°_""�. Clie�[ Plame The �ate�a �r��.� Add rFsS 4_10-8 Nlili:,tc;n�� I_�r�vEy City;'ST.iZip H��i�>b«��u� i,. rwc ��.� Tel Fax (�>1`�� 1�••2�'.3�'_ Sampier(s} Namr,. AYiliaiion (Print} �,�t�.C� �LK:.�° � S��arripler(9y Signa�lure „ . qem 7i Sam�le IL' �Fie�d rdFn4i�ica�io �_jl,J—�'�� ` r'=�,�' - � 3 ,�'� ENVlFtONMENT,�L CONSERVp,71�N LA�ORATORIES CHAIhI-OF-CUSTODY RECORD 1�775 Cent�al Port Dr 40f0 Execirtive Pa.rYc Court, S�uile 171 l(7��2-A Woodm+inds Inclustrial Ct Orlinda. FL 32624 Jasksonvi6'he. FL 3'2z16-6af�9 Cary, NC 2757 1 {4(J7j 826-5314 Fas (407) 85�-6�a5 (904) 296-3097 Fax fnp4} 29u"-G2a0 1915) 467-309C� Fax (979} a67-3515 � Project Num�ier Req�ested Analyses fh+7flE.'' � C �� Projer.t Name�D�esc. Q �'`� d �' �1 � S��vi�Ft I:r�e�` °�^J atE.r �i_ialit � � � �� u�� Po � � silll�,g �No �O � �, � r z LI Raporfing Lontact �- �i �] �i IVi�f91�� CC)#t .r� ::r'' c�, C� r — r � �� l�"� Billiriy CUnlant �'% �� (�'p �' ' �. NE�ncy 5catt �' o U a, �� _ -o Sit� Lnca€ie�i7 1 Time Zone �yy �� ; `m („� Y � � �.i � G"I <C �C. U CJ G� h-- Preservation (52�� C�des1 1Corn�irie as neces: C>I��:r?inn MaErix Tot�l r o( II Gnli-�r.iinn Gate Ti+o�- i,or,��p /�Gnb (�see �ptl25J G� ikfei:ler5 � 't`�• ;=¢ - ('�il _f �l�' � , —6.— c` ( _ _ 1 f-� -�r-f 13�v � " vv,t+� � x x x: x x x— - wwv�.encolabs.tom Page _ _ of Rec�uested Turnaround Times Note � Rush reqca>ts 5ub;ecC[o ar.ceptance by the facility Stancfard � Expeclited D+�e / / Lab Workorder �P�G'I4�41 5ample Comments <— Tot�sl # of CaRtainers Se�n�ple Klt Pr�pare� 9y _ �alelFime Rel�nyuishe�d By t QatP'Tlm� Reoeivnc] f � , �.t,,`'�,,� � �� 1 � /'�1 � y � � � � r�/ �Cc�mmenl:�.f5pecial GeporllnU Requirern�n�s �Re-linqwshed @y Qate:Time .�r.eivp�i By �' � Ref�r�qui5hed 8y I�at-��-fsrme Rgc�oved Ny % � � Cn�der p's � Temns an Rerelpt '9. . � -- - CondiVio�n Upon Receipt � . - .�.m.:�_`-�-�- 1 � � - � 4 �' , L Acc�ptat� � tlrix � GW�vroundw��ler SO Soif D4W-Drinl<ing Water SE-Sedlm�r�, SW-5urtac$ Water WW-bV�_51-wal�r A-Air O-(��h-r {dev�il in commentsy Preservation: I-Ice H-hl,l N-HN(73 S�H'Z504 N4-Na�1H CY-D[?ie� (cietaii in cuinment;) -' _ Nole : r�ll samples suhmi�t,�d to EPdG�� La�s are in accoRdanca �vi�th ihe h=rms an�i cone�ltdaia llsteri on klze revarse �of Q.hls lorm, unless prior �^rrilten agieem�ms exisi C5a1elTirne ii -�, Dale�Tirrie Gate,� e ime Un =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Friday, December 12, 2014 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C414195 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, November 19, 2014. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 13 PROJECT NARRATIVE Date: December 12, 2014 Client: The Catena Group (TH015) Project: Swift Creek Water Quality LabID: C414195 Overview �� www.encolabs.com This report is an amendment to the original report for this work order. This report was revised to remove Mn results and report Mg. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples No Comments Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Bill Scott Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 13 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE ClientID: NC-210 LabID: C414195-01 Sampled: 11/19/14 09:45 Received: 11/19/14 11:20 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 12/17/14 11/21/14 09:08 11/25/14 00:33 EPA 310.2 12/03/14 11/25/14 08:44 11/25/14 11:17 EPA 350.1 12/17/14 11/21/14 09:21 11/21/14 10:21 EPA 6010C OS/18/15 11/20/14 09:17 11/21/14 12:43 EPA 6010C OS/18/15 11/25/14 18:27 12/03/14 09:03 SM 5310B-2000 12/17/14 11/21/14 14:06 11/21/14 16:57 Client ID: SR-1555 Lab ID: C414195-02 Sampled: 11/19/14 10:15 Received: 11/19/14 11:20 Parameter Hold Date/Time(s) Pren Date/Time(s) Analvsis Date/Time(s) EPA 300.0 12/17/14 11/21/14 09:08 11/25/14 00:50 EPA 310.Z 12/03/14 11/25/14 08:44 11/25/14 11:18 EPA 350.1 12/17/14 11/21/14 09:21 11/21/14 10:28 EPA 6010C OS/18/15 11/20/14 09:17 11/21/14 12:53 EPA 6010C O5/18/15 11/25/14 18:27 12/03/14 09:15 SM 5310B-2000 12/17/14 11/21/14 14:06 11/21/14 16:57 Client ID: NC-50 Lab ID: C414195-03 Sampled: 11/19/14 30:50 Received: 11/19/14 11:20 Parameter Hold Date/Time(s) Preu Date/Time(s) Analvsis Date/Time(s) EPA 300.0 12/17/14 11/21/14 09:08 11/25/14 01:07 EPA 310.2 12/03/14 11/25/14 08:44 11/25/14 11:19 EPA 350.1 12/17/14 11/21/14 09:21 11/21/14 10:34 EPA 6010C O5/18/15 11/20/14 09:17 11/21/14 12:56 EPA 6010C OS/18/15 11/25/14 18:27 12/03/14 09:18 SM 5310B-2000 12/17/14 11/21/14 14:06 11/21/14 16:57 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 13 �� www.encolabs.com SAMPLE DETECTION SUMMARY ClientID: NC-210 LabID: C414195-OS Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.58 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6460 39.0 100 ug/L EPA 6010C Chloride 7.2 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2470 23.0 100 ug/L EPA 6010C Potassium - Total 3080 150 500 ug/L EPA 6010C Sodium - Total 7420 400 500 ug/L EPA 6010C Sulfate as SO4 3.7 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 35 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 0.44 J 0.32 1.0 mg/L SM 5310B-2000 Client ID: SR-1555 Lab ID: C414195-02 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.35 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6160 39.0 100 ug/L EPA 6010C Chloride 5.2 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2200 23.0 100 ug/L EPA 6010C Potassium - Total 3770 150 500 ug/L EPA 6010C Sodium - Total 7790 400 500 ug/L EPA 6010C Sulfate as 504 3.7 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 26 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 0.46 J 0.32 1.0 mg/L SM 5310B-2000 Client ID: NC-50 Lab ID: C414195-03 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.25 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6010 39.0 100 ug/L EPA 6010C Chloride 7.2 2.2 5.0 mg/L EPA 300.0 Copper - Dissolved 1.96 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 1910 23.0 100 ug/L EPA 6010C Potassium - Total 3250 150 500 ug/L EPA 6010C Sodium - Total 4760 400 500 ug/L EPA 6010C Sulfate as SO4 3.7 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 26 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 0.79 J 0.32 1.0 mg/L SM 5310B-2000 Zinc- Total 6.14 J 3.80 10.0 ug/L EPA 6010C FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-210 Lab Sample ID:C414195-01 Received: 11/19/14 11:20 Matrix: Water Sampled: ll/19/14 09:45 Work Order: C414195 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4K21043 EPA 6010C 12/03/14 09:03 ]DH Calcium [7440-70-2]^ 6460 ug/L 1 39.0 100 4K21043 EPA 6010C 12/03/14 09:03 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K21043 EPA 6010C 12/03/14 09:03 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4K21043 EPA 6010C 12/03/14 09:03 ]DH Magnesium [7439-95-4]^ 2470 ug/L 1 23.0 100 4K21043 EPA 6010C 12/03/14 09:03 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4K21043 EPA 6010C 12/03/14 09:03 ]DH Potassium [7440-09-7]^ 3080 ug/L 1 150 500 4K21043 EPA 6010C 12/03/14 09:03 ]DH Sodium [7440-23-5]^ 7420 ug/L 1 400 500 4K21043 EPA 6010C 12/03/14 09:03 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 4K21043 EPA 6010C 12/03/14 09:03 ]DH Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K20007 EPA 6010C 11/21/14 12:43 JDH Classical Chemistry Parameters ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.58 mg/L 1 0.045 0.10 4K20012 EPA 350.1 11/21/14 10:21 SHA Chloride [16887-00-6]^ 7.2 mg/L 1 2.2 5.0 4K21005 EPA 300.0 11/25/14 00:33 AJB Sulfate as SO4 [14808-79-8]^ 3.7 J mg/L 1 2.9 5.0 4K21005 EPA 300.0 11/25/14 00:33 AJB Total Alkalinity as CaCO3 [471-34-1]^ 35 mg/L 1 14 15 4K25010 EPA 310.2 11/25/14 11:17 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 0.44 J mg/L 1 0.32 1.0 4K21035 SM 5310B-2000 11/21/14 16:57 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: SR-1555 Lab Sample ID:C414195-02 Received: 11/19/14 11:20 Matrix: Water Sampled: ll/19/14 10:15 Work Order: C414195 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4K21043 EPA 6010C 12/03/14 09:15 ]DH Calcium [7440-70-2]^ 6160 ug/L 1 39.0 100 4K21043 EPA 6010C 12/03/14 09:15 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K21043 EPA 6010C 12/03/14 09:15 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4K21043 EPA 6010C 12/03/14 09:15 ]DH Magnesium [7439-95-4]^ 2200 ug/L 1 23.0 100 4K21043 EPA 6010C 12/03/14 09:15 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4K21043 EPA 6010C 12/03/14 09:15 ]DH Potassium [7440-09-7]^ 3770 ug/L 1 150 500 4K21043 EPA 6010C 12/03/14 09:15 ]DH Sodium [7440-23-5]^ 7790 ug/L 1 400 500 4K21043 EPA 6010C 12/03/14 09:15 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 4K21043 EPA 6010C 12/03/14 09:15 ]DH Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K20007 EPA 6010C 11/21/14 12:53 JDH Classical Chemistry Parameters ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.35 mg/L 1 0.045 0.10 4K20012 EPA 350.1 11/21/14 10:28 SHA Chloride [16887-00-6]^ 5.2 mg/L 1 2.2 5.0 4K21005 EPA 300.0 11/25/14 00:50 AJB Sulfate as SO4 [14808-79-8]^ 3.7 J mg/L 1 2.9 5.0 4K21005 EPA 300.0 11/25/14 00:50 AJB Total Alkalinity as CaCO3 [471-34-1]^ 26 mg/L 1 14 15 4K25010 EPA 310.2 11/25/14 11:18 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 0.46 J mg/L 1 0.32 1.0 4K21035 SM 5310B-2000 11/21/14 16:57 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C414195-03 Received: 11/19/14 11:20 Matrix: Water Sampled: ll/19/14 10:50 Work Order: C414195 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4K21043 EPA 6010C 12/03/14 09:18 ]DH Calcium [7440-70-2]^ 6030 ug/L 1 39.0 100 4K21043 EPA 6010C 12/03/14 09:18 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4K21043 EPA 6010C 12/03/14 09:18 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4K21043 EPA 6010C 12/03/14 09:18 ]DH Magnesium [7439-95-4]^ 1930 ug/L 1 23.0 100 4K21043 EPA 6010C 12/03/14 09:18 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4K21043 EPA 6010C 12/03/14 09:18 ]DH Potassium [7440-09-7]^ 3250 ug/L 1 150 500 4K21043 EPA 6010C 12/03/14 09:18 ]DH Sodium [7440-23-5]^ 4760 ug/L 1 400 500 4K21043 EPA 6010C 12/03/14 09:18 ]DH Zinc[7440-66-6]^ 6.14 J ug/L 1 3.80 10.0 4K21043 EPA 6010C 12/03/14 09:18 ]DH Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 1.96 J ug/L 1 1.60 10.0 4K20007 EPA 6010C 11/21/14 12:56 JDH Classical Chemistry Parameters ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.25 mg/L 1 0.045 0.10 4K20012 EPA 350.1 11/21/14 10:34 SHA Chloride [16887-00-6]^ 7.2 mg/L 1 2.2 5.0 4K21005 EPA 300.0 11/25/14 01:07 AJB Sulfate as SO4 [14808-79-8]^ 3.7 J mg/L 1 2.9 5.0 4K21005 EPA 300.0 11/25/14 01:07 AJB Total Alkalinity as CaCO3 [471-34-1]^ 26 mg/L 1 14 15 4K25010 EPA 310.2 11/25/14 11:19 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 0.79 J mg/L 1 0.32 1.0 4K21035 SM 5310B-2000 11/21/14 16:57 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 13 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4K21043 - EPA 3005A Blank (4K23043-BLKl) Prepared: 11/25/2014 18:27 Analyzed: 12/03/2014 08:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 2.10 U 10.0 ug/L Magnesium 23.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (4K21043-BS3) Prepared: 11/25/2014 18:27 Analyzed: 12/03/2014 09:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 19.9 1.00 ug/L 20.0 100 80-120 Calcium 2110 100 ug/L 2000 105 80-120 Copper 195 10.0 ug/L 200 97 80-120 Lead 198 10.0 ug/L 200 99 80-120 Magnesium 2040 100 ug/L 2000 102 80-120 Nickel 201 10.0 ug/L 200 101 80-120 Potassium 10100 500 ug/L 10000 101 80-120 Sodium 10300 500 ug/L 10000 103 80-120 Zinc 203 10.0 ug/L 200 101 80-120 Matrix Spike (4K21043-MS3) Prepared: 11/25/2014 18:27 Analyzed: 12/03/2014 09:05 Source: C414195-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 Calcium 8280 100 ug/L 2000 6460 91 75-125 Copper 198 10.0 ug/L 200 1.60 U 99 75-125 Lead 203 10.0 ug/L 200 2.10 U 102 75-125 Magnesium 4440 100 ug/L 2000 2470 9S 75-125 Nickel 203 10.0 ug/L 200 1.80 U 102 75-125 Potassium 13000 500 ug/L 10000 3080 99 75-125 Sodium 17400 500 ug/L 10000 7420 100 75-125 Zinc 206 10.0 ug/L 200 3.80 U 103 75-125 Matrix Spike Dup (4K23043-MSD3) Prepared: 11/25/2014 18:27 Analyzed: 12/03/2014 09:08 Source: C414195-03 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result Flaa 21.0 8440 197 204 4480 210 13300 17800 214 � 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result 0.360 U 6460 1.60 U 2.10 U 2470 1.80 U 3080 7420 3.80 U %REC 105 99 98 102 100 105 103 104 107 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 RPD 4 2 03 0.3 0.9 3 3 2 4 RPD Limit Notes 20 20 20 20 20 20 20 20 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 13 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4K21043 - EPA 3005A - Continued Post Spike (4K23043-PS3) Prepared: 11/25/2014 18:27 Analyzed: 12/03/2014 09:10 Source: C414195-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0190 0.00100 mg/L 0.0200 5.18E-5 95 80-120 Calcium 8.15 0.100 mg/L 2.00 6.46 84 80-120 Copper 0.181 0.0100 mg/L 0.200 -0.000376 91 80-120 Lead 0.182 0.0100 mg/L 0.200 -0.000727 91 80-120 Magnesium 4.31 0.100 mg/L 2.00 2.47 92 80-120 Nickel 0.190 0.0100 mg/L 0.200 -0.000524 95 80-120 Potassium 12.2 0.500 mg/L 10.0 3.08 92 80-120 Sodium 16.5 0.500 mg/L 10.0 7.42 91 80-120 Zinc 0.195 0.0100 mg/L 0.200 0.00190 96 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 4K20007 - EPA 3005A Blank (4K20007-BLK2) Prepared: 11/20/2014 09:17 Analyzed: 11/21/2014 11:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (4K20007-BS3) Prepared: 11/20/2014 09:17 Analyzed: 11/21/2014 11:32 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 200 10.0 ug/L 200 100 80-120 Matrix Spike (4K20007-MS3) Prepared: 11/20/2014 09:17 Analyzed: 11/21/2014 12:19 Source: C414012-03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 207 10.0 ug/L 200 1.60 U 104 75-125 Matrix Spike Dup (4K20007-MSD3) Prepared: 11/20/2014 09:17 Analyzed: 11/21/2014 12:21 Source: C414012-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 206 10.0 ug/L 200 1.60 U 103 75-125 0.6 20 Post Spike (4K20007-PS3) Prepared: 11/20/2014 09:17 Analyzed: 11/21/2014 12:24 Source: C414012-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 0.186 0.0100 mg/L 0.200 0.00104 92 80-120 Classical Chemistry Parameters - Quality Control Batch 4K20012 - NO PREP Blank (4K20012-BLKl) Prepared: 11/21/2014 09:21 Analyzed: 11/21/2014 10:17 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 13 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4K20012 - NO PREP - Continued LCS (4K20012-BS3) Prepared: 11/21/2014 09:21 Analyzed: 11/21/2014 10:19 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 1.0 0.10 mg/L 0.997 103 90-110 Matrix Spike (4K20012-MS3) Prepared: 11/21/2014 09:21 Analyzed: 11/21/2014 10:24 Source: C414195-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.99 0.10 mg/L 0.387 0.58 104 90-110 Matrix Spike Dup (4K20012-MSD3) Prepared: 11/21/2014 09:21 Analyzed: 11/21/2014 10:26 Source: C414195-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.99 0.10 mg/L 0387 0.58 105 90-110 0.4 10 Batch 4K21005 - NO PREP Blank (4K23005-BLKl) Prepared: 11/21/2014 09:08 Analyzed: 11/24/2014 16:37 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (4K21005-BS3) Prepared: 11/21/2014 09:08 Analyzed: 11/24/2014 19:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 48 5.0 mg/L 50.0 96 90-110 Sulfate as 504 47 5.0 mg/L 50.0 95 90-110 Matrix Spike (4K21005-MS3) Prepared: 11/21/2014 09:08 Analyzed: 11/24/2014 19:27 Source: C414319-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 20 5.0 mg/L 20.0 3.1 82 90-110 QM-OS Sulfate as SO4 19 5.0 mg/L 20.0 3.5 80 90-110 QM-OS Matrix Spike Dup (4K23005-MSD3) Prepared: 11/21/2014 09:08 Analyzed: 11/24/2014 20:18 Source: C414319-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Chloride 20 5.0 mg/L 20.0 3.1 86 90-110 3 10 QM-OS Sulfate as SO4 20 5.0 mg/L 20.0 3.5 83 90-110 3 10 QM-OS Batch 4K25010 - NO PREP Blank (4K25010-BLKS) Prepared: 11/25/2014 08:44 Analyzed: 11/25/2014 11:05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 13 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4K25010 - NO PREP - Continued �� www.encolabs.com LCS (4K25010-BS3) Prepared: 11/25/2014 08:44 Analyzed: 11/25/2014 11:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 102 80-120 Matrix Spike (4K25010-MS3) Prepared: 11/25/2014 08:44 Analyzed: 11/25/2014 11:07 Source: C414311-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 43 15 mg/L 37.8 14 U 112 80-120 Matrix Spike Dup (4K25010-MSD3) Prepared: 11/25/2014 08:44 Analyzed: 11/25/2014 11:08 Source: C414111-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 38 15 mg/L 37.8 14 U 101 80-120 11 25 Classical Chemistry Parameters (Dissolved) - Quality Control Batch 4K21035 - NO PREP Blank (4K23035-BLKS) Prepared: 11/21/2014 14:06 Analyzed: 11/21/2014 16:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.32 U 1.0 mg/L LCS (4K21035-BS3) Prepared: 11/21/2014 14:06 Analyzed: 11/21/2014 16:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 45 1.0 mg/L 40.0 112 85-115 Matrix Spike (4K21035-MS3) Prepared: 11/21/2014 14:06 Analyzed: 11/21/2014 16:57 Source: A406381-01 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 53 1.0 mg/L 40.0 6.7 115 85-115 Matrix Spike Dup (4K21035-MSD3) Prepared: 11/21/2014 14:06 Analyzed: 11/21/2014 16:57 Source: A406381-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 45 1.0 mg/L 40.0 6.7 96 85-115 16 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 13 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 12 of 13 � ENVIF�ONINENiAL CONSERIIATION LABQRATQRIES C�IAIfV-OF-CUSTODY RECOR� �.� �� 'IR��_,? � � � iG775 Central Poat ur. 9&i0 Execeil�.ue Pzrik Cowt, S�ite 211 1p2-r1 Woc>dvdir,ds Inrl�istrial Ct. � �� . � � � Orl��ido�, FL 328�4 .7�xcksonville. Fp� 3?'21 fi-6fl69 C�ry� NC :=7511 .- _ fd07} 326-5314 Fax (40?9 350-9�J�45 {5�J4) ^c96 a0 �7 �ex: i9��4) 29�i-�2'IQ (J1��) 4Cs7�:i09C7 Fax fy1�) <.l6?-3�15 Clie�nt Namr.; Projec! Nwn6er Requested Analyses i'��,� C�c�teti�'�c, �,`� i ��, � �.� Addresg- -- - — Projec� Nartic'D�sc q� � J ti `-� 1 L� � � fU"� � 115 i�G� ; � � ll ; ', �r �, �� t �.. , �t-�- CYe�. �� '�� CL�; � t (, ( 4-t�;,l i �S CiIy:ST;Zip , ' ' PO #+ 8i'�Iliii�y Info � y��/�, H- e 1'0��'k�c� �r e�: uc� 4�ti � ti Cr `��i �-� � u �� Tci Fax � P�e��wrtin� �ontacl �� '� ; � � � t- � c� �� ;-� - } =�iUu i`�C.a'\Gi,� .> i �?'t�s , . ` � � � ;., ti,ampler(5) Name� Arlilua1iorv lprint1 6iIIVnc� C�r�ntact � ' ��ti1Y1�1�' :) �i'��I Cvi,��i:� .�C.��" � _� r� J C �I � Sainplerfsl �ignaCure Site Leeatiut� ! Time Zone �,.� :� � ��—' Ileen .+a Samp�le 16 (Fia�ld id�n�ifica4ir�n} ��'` .. � 4, � , °�� -``� G�allecti�n Matnx Tn�al ?! Oi CoUecYinnC�aU T�me iu�irp?Grab (see�coc�e�s} Conl�inars ; ,r' i1� fo �I —`,' _,�, ---- 11 1 4�j � �� Li ;.� �°.�� -�"� - I Preservation {Sc�e ��cdes} f CoFnL�ine as w►nrr�v.enc�lak�s.cor�e P��ye �f Rec�uested Turnaround Times �hVo4e : Ru: h retpiests si�P�jecl ta acr.epta.ncr Y�y [hc f3 ility Stan�dard Expeclited Due I f Lab Workorder �"��4�-'�1�� Sar��{�le Comn-�ents <-- Total # of Coi�tai�ers - Sampfe Kil Prepared By _ bater�l'imc- Refinquis� ¢d 64: Oate�Time . Receiva?d Ly .. � . ' . ri � � ' - — . . , ` `.� . Y Cr�mmnnl=''Sq�ecia9 F��epurtiri� RecFL�irer'i7ents RPfinGuishgcl By Date-Tirne Receive�i+-F?y - ' ' Rellnquisherl By �ate�Time Rea�ived FlV � Gaoler N's & Terttps on Racslpt � Canr�iUon U � nn Re�caipl `° -� �� - � Acce�tak�l� w _ -- Q latrix . CVv'-�,i . u� i�..:tr�- SO .=�:�n p�M C�iu.�' � g'� a�fcr SF ��.:7ii:e�v SW �..�u��'s� �N:�ipr WW�.1�:,t-:raater A�Air �D-�th�r �drfall in r.,omn�enis� Preservation: I-Oce w-HCC N-HNO3 S-H2SO4 NO-NaGH O-Other i.cletail in cornunzenlsi w fL ... :�I s.� �FI_.,,�. i,�m i1,-9 �.�� F-�;CCJ Ln. ..rc n:rc:irianee w(�h the term� an� �ondi6ens li�tej �� IPe :c�e:i5a. ul tlris 4��im, iinlacg �:rtirrmrrltlen agreemrnl; ex9�i � I�' � � I 1 41 i S D�ale;"1'irtie L7atslTime UnaeceptabiP =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, December 31, 2014 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C416681 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, December 16, 2014. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 12 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: SR-1555 Lab ID: C416681-03 Sampled: 12/16/14 10:00 Received: 12/16/14 15:42 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 O1/13/15 12/17/14 09:44 12/17/14 14:45 EPA 310.2 12/30/14 12/26/14 10:07 12/26/14 12:00 EPA 350.1 O1/13/15 12/19/14 09:26 12/19/14 13:16 EPA 6010C 06/14/15 12/23/14 14:27 12/24/14 14:29 SM 2130B-2001 12/18/14 10:00 12/17/14 18:24 12/17/14 18:24 SM 5310B-2000 O1/13/15 12/22/14 12:18 12/22/14 14:31 Client ID: SR-1555 Lab ID: C416681-01RE1 Sampled: 12/16/14 10:00 Received: 12/16/14 15:42 Parameter Hold Date/Time(s) Pren Date/Time(s) Analvsis Date/Time(s) EPA 6010C 06/14/15 12/23/14 14:27 12/29/14 10:59 Client ID: SR-1555 Dissolved Lab ID: C416681-02 Sampled: 12/16/14 10:00 Received: 12/16/14 15:42 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 6010C 06/14/15 12/23/14 14:27 12/24/14 14:33 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 12 �� www.encolabs.com SAMPLE DETECTION SUMMARY ClientID: SR-1555 LabID: C416681-OS Anal e Results Flaa MDL Q Units Method Notes Chloride 6.1 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2030 23.0 100 ug/L EPA 6010C Potassium - Total 2880 150 500 ug/L EPA 6010C Sodium - Total 6910 400 500 ug/L EPA 6010C Sulfate as SO4 4.0 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 20 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.2 0.32 1.0 mg/L SM 5310B-2000 Turbidity 1.5 0.50 1.0 NTU SM Z130B-2001 ClientID: SR-1555 LabID: C416681-OSRE1 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 5940 39.0 100 ug/L EPA 6010C FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: SR-1555 Lab Sample ID:C416681-01 Received: 12/16/14 15:42 Matrix: Water Sampled:l2/16/14 10:00 Work Order: C416681 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 4L23025 EPA 6010C 12/24/14 14:29 VLO Calcium [7440-70-2]^ 5940 ug/L 1 39.0 100 4L23025 EPA 6010C 12/29/14 10:59 VLO Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4L23025 EPA 6010C 12/24/14 14:29 VLO Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 4L23025 EPA 6010C 12/24/14 14:29 VLO Magnesium [7439-95-4]^ 2030 ug/L 1 23.0 100 4L23025 EPA 6010C 12/24/14 14:29 VLO Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 4L23025 EPA 6010C 12/24/14 14:29 VLO Potassium [7440-09-7]^ 2880 ug/L 1 150 500 4L23025 EPA 6010C 12/24/14 14:29 VLO Sodium [7440-23-5]^ 6930 ug/L 1 400 500 4L23025 EPA 6010C 12/24/14 14:29 VLO Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 4L23025 EPA 6010C 12/24/14 14:29 VLO Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4L23025 EPA 6010C 12/24/14 14:29 VLO Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 4L19023 EPA 350.1 12/19/14 13:16 AJB Chloride [16887-00-6]^ 6.1 mg/L 1 2.2 5.0 4L17013 EPA 300.0 12/17/14 14:45 AJB Sulfate as SO4 [14808-79-8]^ 4.0 J mg/L 1 2.9 5.0 4L17013 EPA 300.0 12/17/14 14:45 AJB Total Alkalinity as CaCO3 [471-34-1]^ 20 mg/L 1 14 15 4L26014 EPA 310.2 12/26/14 12:00 SHA Turbidity^ 1.5 NTU 1 0.50 1.0 4L17045 SM 2130B-2001 12/17/14 18:24 JOC Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.2 mg/L 1 0.32 1.0 4L22035 SM 5310B-2000 12/22/14 14:31 RSA Description: SR-1555 Dissolved Lab Sample ID:C416681-02 Received: 12/16/14 15:42 Matrix: Water Sampled:l2/16/14 10:00 Work Order: C416681 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 59iJ Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 4L23025 EPA 6010C 12/24/14 14:33 VLO FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4L23025 - EPA 3005A Blank (4L23025-BLK3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:20 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Copper 1.60 U 10.0 ug/L Lead 2.10 U 10.0 ug/L Magnesium 23.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L Blank (4L23025-BLK3) Prepared: 12/23/2014 14:27 Analyzed: 12/29/2014 10:36 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 2.10 U 10.0 ug/L Magnesium 23.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (4L23025-BSl) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:25 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 22.3 1.00 ug/L 20.0 111 80-120 Copper 206 10.0 ug/L 200 103 80-120 Lead 213 10.0 ug/L 200 107 80-120 Magnesium 2070 100 ug/L 2000 104 80-120 Nickel 221 10.0 ug/L 200 110 80-120 Potassium 10300 500 ug/L 10000 103 80-120 Sodium 10400 500 ug/L 10000 104 80-120 Zinc 222 10.0 ug/L 200 111 80-120 LCS (4L23025-BS2) Prepared: 12/23/2014 14:27 Analyzed: 12/29/2014 10:39 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result Flaq 20.9 2090 195 199 1990 206 10100 10300 208 PQL 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result %REC 104 105 97 99 100 103 101 103 104 %REC Limits 80-120 80-120 80-120 80-120 80-120 80-120 80-120 80-120 80-120 RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4L23025 - EPA 3005A - Continued Matrix Spike (4L23025-MS3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:30 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 21.3 1.00 ug/L 20.0 0.360 U 107 75-125 Copper 203 10.0 ug/L 200 1.60 U 102 75-125 Lead 207 10.0 ug/L 200 2.10 U 103 75-125 Magnesium 6150 100 ug/L 2000 4750 70 75-125 QM-OS Nickel 221 10.0 ug/L 200 8.89 106 75-125 Potassium 11700 500 ug/L 10000 1790 99 75-125 Sodium 45500 500 ug/L 10000 40500 51 75-125 QM-OS Zinc 246 10.0 ug/L 200 32.2 107 75-125 Matrix Spike (4L23025-MS2) Prepared: 12/23/2014 14:27 Analyzed: 12/29/2014 10:44 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.8 1.00 ug/L 20.0 0.360 U 104 75-125 Calcium 4840 100 ug/L 2000 3140 85 75-125 Copper 196 10.0 ug/L 200 1.60 U 98 75-125 Lead 198 10.0 ug/L 200 2.10 U 99 75-125 Magnesium 5990 100 ug/L 2000 4750 62 75-125 QM-OS Nickel 215 10.0 ug/L 200 8.89 103 75-125 Potassium 11900 500 ug/L 10000 1790 102 75-125 Sodium 46700 500 ug/L 10000 40500 62 75-125 QM-OS Zinc 238 10.0 ug/L 200 32.2 103 75-125 Matrix Spike Dup (4L23025-MSDl) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:33 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 21.5 1.00 ug/L 20.0 0.360 U 108 75-125 0.9 20 Copper 205 10.0 ug/L 200 1.60 U 103 75-125 1 20 Lead 208 10.0 ug/L 200 2.10 U 104 75-125 0.7 20 Magnesium 6460 100 ug/L 2000 4750 85 75-125 5 20 Nickel 223 10.0 ug/L 200 8.89 107 75-125 0.7 20 Potassium 12000 500 ug/L 10000 1790 102 75-125 3 20 Sodium 47500 500 ug/L 10000 40500 70 75-125 4 20 QM-OS Zinc 247 10.0 ug/L 200 32.2 107 75-125 0.5 20 Matrix Spike Dup (4L23025-MSD2) Prepared: 12/23/2014 14:27 Analyzed: 12/29/2014 10:46 Source: C415919-03 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result Flaq 20.6 4860 196 198 6190 214 11800 46700 238 PQL 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result 0.360 U 3140 1.60 U 2.10 U 4750 8.89 1790 40500 32.2 %REC 103 86 98 99 72 103 100 62 103 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD RPD Limit Notes 0.7 20 0.4 20 0.005 20 0.1 20 3 20 QM-OS 0.3 20 2 20 0.2 20 QM-OS 0.04 20 Page 6 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 4L23025 - EPA 3005A - Continued Post Spike (4L23025-PSi) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:35 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0211 0.00100 mg/L 0.0200 0.000120 105 80-120 Copper 0.202 0.0100 mg/L 0.200 0.000714 100 80-120 Lead 0.205 0.0100 mg/L 0.200 -2.00E-5 102 80-120 Magnesium 6.34 0.100 mg/L 2.00 4.75 80 80-120 Nickel 0.219 0.0100 mg/L 0.200 0.00889 105 80-120 Potassium 12.0 0.500 mg/L 10.0 1.79 102 80-120 Sodium 47.5 0.500 mg/L 10.0 40.5 70 80-120 QM-08 Zinc 0.245 0.0100 mg/L 0.200 0.0322 106 80-120 Post Spike (4L23025-PS2) Prepared: 12/23/2014 14:27 Analyzed: 12/29/2014 10:49 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0216 0.00100 mg/L 0.0200 0.000120 108 80-120 Calcium 5.37 0.100 mg/L 2.00 3.14 112 80-120 Copper 0.212 0.0100 mg/L 0.200 0.000714 105 80-120 Lead 0.207 0.0100 mg/L 0.200 -2.00E-5 104 80-120 Magnesium 6.65 0.100 mg/L 2.00 4.75 95 80-120 Nickel 0.225 0.0100 mg/L 0.200 0.00889 108 80-120 Potassium 12.8 0.500 mg/L 10.0 1.79 110 80-120 Sodium 51.3 0.500 mg/L 10.0 40.5 109 80-120 Zinc 0.252 0.0100 mg/L 0.200 0.0322 110 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 4L23025 - EPA 3005A Blank (4L23025-BLK3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:20 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L Blank (4L23025-BLK2) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:23 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (4L23025-BS3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:25 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 206 10.0 ug/L 200 103 80-120 Matrix Spike (4L23025-MS3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:30 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 203 10.0 ug/L 200 1.60 U 102 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch 4L23025 - EPA 3005A - Continued Matrix Spike Dup (4L23025-MSD3) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:33 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 205 10.0 ug/L 200 1.60 U 103 75-125 1 20 Post Spike (4L23025-PSS) Prepared: 12/23/2014 14:27 Analyzed: 12/24/2014 13:35 Source: C415919-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 0.202 0.0100 mg/L 0.200 0.000714 100 80-120 Classical Chemistry Parameters - Quality Control Batch 4L17013 - NO PREP Blank (4L37013-BLK3) Prepared: 12/17/2014 09:44 Analyzed: 12/17/2014 11:04 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (4L17013-BS3) Prepared: 12/17/2014 09:44 Analyzed: 12/17/2014 11:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 48 5.0 mg/L 50.0 95 90-110 Sulfate as SO4 47 5.0 mg/L 50.0 94 90-110 Matrix Spike (4L17013-MS3) Prepared: 12/17/2014 09:44 Analyzed: 12/17/2014 13:37 Source: C414995-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 23 5.0 mg/L 20.0 5.4 89 90-110 QM-OS Sulfate as 504 32 5.0 mg/L 20.0 13 91 90-110 Matrix Spike Dup (4L37013-MSDi) Prepared: 12/17/2014 09:44 Analyzed: 12/17/2014 13:54 Source: C414995-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 23 5.0 mg/L 20.0 5.4 87 90-110 2 10 QM-OS Sulfate as SO4 31 5.0 mg/L 20.0 13 89 90-110 1 10 QM-OS Batch 4L17045 - NO PREP Blank (4L37045-BLK3) Prepared & Analyzed: 12/17/2014 18:24 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Turbidity 0.50 U 1.0 NTU LCS (4L17045-BS3) Prepared & Analyzed: 12/17/2014 18:24 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Turbidity 19 1.0 NTU 20.0 96 90-110 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 12 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4L17045 - NO PREP - Continued Duplicate (4L37045-DUP3) Prepared & Analyzed: 12/17/2014 18:24 Source: C414671-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Turbidity 3.1 1.0 NTU 3.1 1 25 Duplicate (4L37045-DUP2) Prepared & Analyzed: 12/17/2014 18:24 Source: C414671-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Turbidity 6.6 1.0 NTU 6.7 2 25 Batch 4L19023 - NO PREP Blank (4L19023-BLKl) Prepared: 12/19/2014 09:26 Analyzed: 12/19/2014 12:22 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (4L19023-BS3) Prepared: 12/19/2014 09:26 Analyzed: 12/19/2014 12:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.92 0.10 mg/L 0.997 92 90-110 Matrix Spike (4L19023-MS3) Prepared: 12/19/2014 09:26 Analyzed: 12/19/2014 12:28 Source: C406162-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.36 0.10 mg/L 0.387 0.045 U 94 90-110 Matrix Spike Dup (4L19023-MSDl) Prepared: 12/19/2014 09:26 Analyzed: 12/19/2014 12:30 Source: C406162-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.37 0.10 mg/L 0387 0.045 U 96 90-110 2 10 Batch 4L26014 - NO PREP Blank (4L26014-BLK3) Prepared: 12/26/2014 10:07 Analyzed: 12/26/2014 11:38 Spike Source %REC RPD Analvte Result Flag � Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (4L26014-BS3) Prepared: 12/26/2014 10:07 Analyzed: 12/26/2014 11:38 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 99 15 mg/L 100 99 80-120 Matrix Spike (4L26014-MS3) Prepared: 12/26/2014 10:07 Analyzed: 12/26/2014 11:40 Source: C415213-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 560 75 mg/L 200 320 121 80-120 QM-OS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 12 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 4L26014 - NO PREP - Continued �� www.encolabs.com Matrix Spike Dup (4L26014-MSD3) Prepared: 12/26/2014 10:07 Analyzed: 12/26/2014 11:41 Source: C415213-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 540 75 mg/L 200 320 109 80-120 5 25 Classical Chemistry Parameters (Dissolved) - Quality Control Batch 4L22035 - NO PREP Blank (4L22035-BLK3) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.32 U 1.0 mg/L LCS (4L22035-BS3) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 37 1.0 mg/L 40.0 92 85-115 Matrix Spike (4L22035-MS3) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Source: A407446-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 42 1.0 mg/L 40.0 0.32 U 106 85-115 Matrix Spike (4L22035-M52) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Source: A407540-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 42 1.0 mg/L 40.0 0.32 U 106 85-115 Matrix Spike Dup (4L22035-MSDi) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Source: A407446-01 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 40 1.0 mg/L 40.0 0.32 U 100 85-115 6 21 Matrix Spike Dup (4L22035-MSD2) Prepared: 12/22/2014 12:18 Analyzed: 12/22/2014 14:31 Source: A407540-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 42 1.0 mg/L 40.0 0.32 U 106 85-115 0.1 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 12 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-OS Post-digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 12 ��F��"Gff��i�ki�x�E�1�v�L ��f��i'�da��r�C h��l��`I�'tE� ��-i�Ir�-+��'�:a��T�a�b' �#"�'�r�l�l� w+�,Ixivti.��ew'�Q�It3l��.�'c�'�r — � � • , , � ; � -„ +. ; . .� ., � ,• . s :� �,. � ;�.�� . �� r � �. ,-.� ,�.�: < < � � =�., fy : , � �, '��;�"u - . ..� �6i'. . . - , _ . . . - � �e _• _ z .. - i • � i � � a . . '�i i., . � i �'Jj��.�= f,i: .b� i91 i'IdJfh� __ � I n n. I�I.�t �� !�T•��.nr.-�p k„ il � v,� f�Pi"�I f� i:��t'(.� ':.i.YfP��51'::111Y1t 1 :_. '" � �i .-.. _ _ .. . r� T 1 E � N±�' �"y;'� �� I,,,F"�:�.-�, � � ��l`�. �-� M �", LI `� �� s; = _� �i ��_a � I �.,e pra�a,� !�,� _ t ` .^d „ i ��iM-, �� 3; • i �.. i. ��.. R., � � � '�3 �`-'� � � l�"i' �' j� �'�'�.. 4—'if' � �� ' � PL� i ��+�-4-� �_±� �. 's,:i''M.'�: -� � I .�� I i r...l�.�i '-�"• oi. i.�r � �� i ti !, � 'ti '� i i � — � I �• ry ' �F�i�•f9iR+�lrr " .Y = – –f � � + �'i�' ��4��1� �i + U��c'� �p'�� ,. ��i 1 � � Y= = '� � � �� °� _ � t�� n�-J,�rr� ,,� _ � =,:�; k��ti,a a r.�u.:- � �� I " � N � I � � � � � � l!�'� �;'+� �, � �i i�E�� . �-�� -:�'- � .f .. � � �+'i F�'��cllk�:i ;,m..lslle; bLui� �+Jll�u ur-•.al!I I�il-q �ri_- ��i '; °�1 I r � 1, ' .�"'�+ � �� .. v M�� fUi1 -i.s � �. i i�, �+�.�}y _ _ ' _ _ ��,u�� 6m�� Ri;e�.drm — - - — - — - - '.;�_ �� :•� � .,. _ '-� � i.�_ � , ` ,,� _ � � � �, , � LJ.�1 ��x il � ttis.�l�l' e � � .�' �I �� 't .`-' -'� �a a- , I. . � �' ��.X �j:��:l - . �: • . � , _ , ,. �` � . . _ - --- ._ . . - ` . i. tl F . _ � , , ., � ,. � � Iv.rs�� '��eq:�,a,�fJ'...I�ait.��dsk'•le,�. ,�q.�r.�r,li�.�.. '�-r .� +�.r. .�- r- � •r�.r.::-- i...II�Y�,Iu�::.:7foll`11,9"'� r- -a, r, — ;y 1 — ---_.. .,._�. .me �,'r�—� � ..7 `=, � � _, f �. 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' ' � . � � � � _. . ' Page 12 of 12 =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Friday, February 20, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C501626 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, February 6, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 12 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC-50 Lab ID: C501626-03 Sampled: 02/06/15 11:15 Received: 02/06/15 15:30 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 03/06/15 02/10/15 08:50 02/10/15 12:08 EPA 310.2 02/20/15 02/19/15 07:58 02/19/15 11:06 EPA 350.1 03/06/15 02/11/15 07:06 02/11/15 09:33 EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:14 SM 5310B-2000 03/06/15 02/20/15 10:00 02/ZO/15 18:10 Client ID: NC-50 Lab ID: C501626-02 Sampled: 02/06/15 11:15 Received: 02/06/15 15:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:17 Client ID: SR 1555 Lab ID: C501626-03 Sampled: 02/06/15 10:30 Received: 02/06/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 03/06/15 02/10/15 08:50 02/10/15 12:25 EPA 310.2 02/20/15 02/19/15 07:58 02/19/15 11:07 EPA 350.1 03/06/15 02/11/15 07:06 02/11/15 09:35 EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:19 SM 5310B-2000 03/06/15 02/20/15 10:00 02/20/15 18:10 Client ID: SR 1555 Lab ID: C501626-04 Sampled: 02/06/15 10:30 Received: 02/06/15 15:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:22 Client ID: NC 210 Lab ID: C501626-OS Sampled: 02/06/15 09:45 Received: 02/06/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 03/06/15 02/10/15 08:50 02/10/15 12:42 EPA 310.2 02/20/15 02/19/15 07:58 02/19/15 11:10 EPA 350.1 03/06/15 02/11/15 07:06 02/11/15 09:37 EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:24 SM 5310B-2000 03/06/15 02/20/15 10:00 02/20/15 18:10 Client ID: NC 210 Lab ID: C501626-06 Sampled: 02/06/15 09:45 Received: 02/06/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C 08/OS/15 02/10/15 16:04 02/11/15 11:27 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 12 �� www.encolabs.com SAMPLE DETECTION SUMMARY ClientID: NC-50 LabID: C501626-OS Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 5010 39.0 100 ug/L EPA 6010C Chloride 4.9 J 2.2 5.0 mg/L EPA 300.0 Copper- Total 2.46 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 1740 23.0 100 ug/L EPA 6010C Potassium - Total 2420 150 500 ug/L EPA 6010C Sodium - Total 4290 400 500 ug/L EPA 6010C Sulfate as SO4 4.5 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 20 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.1 0.32 1.0 mg/L SM 5310B-2000 Client ID: NC-50 Lab ID: C501626-02 Anal e Results Flaa MDL Q Units Method Notes Copper - Dissolved 2.24 J 1.60 10.0 ug/L EPA 6010C Client ID: SR 1555 Lab ID: C501626-03 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 5170 39.0 100 ug/L EPA 6010C Chloride 5.3 2.2 5.0 mg/L EPA 300.0 Copper- Total 2.75 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 1820 23.0 100 ug/L EPA 6010C Potassium - Total 2190 150 500 ug/L EPA 6010C Sodium - Total 5500 400 500 ug/L EPA 6010C Sulfate as SO4 4.4 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 22 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.3 0.32 1.0 mg/L SM 5310B-2000 Client ID: NC 210 Lab ID: C501626-05 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 5050 39.0 100 ug/L EPA 6010C Chloride 6.0 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 1950 23.0 100 ug/L EPA 6010C Potassium - Total 2110 150 500 ug/L EPA 6010C Sodium - Total 5390 400 500 ug/L EPA 6010C Sulfate as SO4 4.6 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 22 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.4 0.32 1.0 mg/L SM 5310B-2000 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C501626-01 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 11:15 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 5B10032 EPA 6010C 02/11/15 11:14 ]DH Calcium [7440-70-2]^ 5030 ug/L 1 39.0 100 5610032 EPA 6010C 02/11/15 11:14 ]DH Copper[7440-50-8]^ 2.46 J ug/L 1 1.60 10.0 5610032 EPA 6010C 02/11/15 11:14 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 5B10032 EPA 6010C 02/11/15 11:14 ]DH Magnesium [7439-95-4]^ 1740 ug/L 1 23.0 100 5610032 EPA 6010C 02/11/15 11:14 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 5B10032 EPA 6010C 02/11/15 11:14 ]DH Potassium [7440-09-7]^ 2420 ug/L 1 150 500 5610032 EPA 6010C 02/11/15 11:14 ]DH Sodium [7440-23-5]^ 4290 ug/L 1 400 500 5610032 EPA 6010C 02/11/15 11:14 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 5B10032 EPA 6010C 02/11/15 11:14 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 5B11001 EPA 350.1 02/11/15 09:33 SHA Chloride [16887-00-6]^ 4.9 J mg/L 1 2.2 5.0 5610013 EPA 300.0 02/10/15 12:08 AJB Sulfate as SO4 [14808-79-8]^ 4.5 J mg/L 1 2.9 5.0 5610013 EPA 300.0 02/10/15 12:08 AJB Total Alkalinity as CaCO3 [471-34-1]^ 20 mg/L 1 14 15 5619002 EPA 310.2 02/19/15 11:06 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.1 mg/L 1 0.32 1.0 5619003 SM 5310B-2000 02/20/15 18:10 RSA Description: NC-50 Lab Sample ID:C501626-02 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 11:15 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 2.24 J ug/L 1 1.60 10.0 5610032 EPA 6010C 02/11/15 11:17 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: SR 1555 Lab Sample ID:C501626-03 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 10:30 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 5B10032 EPA 6010C 02/11/15 11:19 ]DH Calcium [7440-70-2]^ 5170 ug/L 1 39.0 100 5610032 EPA 6010C 02/11/15 11:19 ]DH Copper[7440-50-8]^ 2.75 J ug/L 1 1.60 10.0 5610032 EPA 6010C 02/11/15 11:19 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 5B10032 EPA 6010C 02/11/15 11:19 ]DH Magnesium [7439-95-4]^ 1820 ug/L 1 23.0 100 5610032 EPA 6010C 02/11/15 11:19 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 5B10032 EPA 6010C 02/11/15 11:19 ]DH Potassium [7440-09-7]^ 2190 ug/L 1 150 500 5610032 EPA 6010C 02/11/15 11:19 ]DH Sodium [7440-23-5]^ 5500 ug/L 1 400 500 5610032 EPA 6010C 02/11/15 11:19 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 5B10032 EPA 6010C 02/11/15 11:19 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 5B11001 EPA 350.1 02/11/15 09:35 SHA Chloride [16887-00-6]^ 5.3 mg/L 1 2.2 5.0 5610013 EPA 300.0 02/10/15 12:25 AJB Sulfate as SO4 [14808-79-8]^ 4.4 J mg/L 1 2.9 5.0 5610013 EPA 300.0 02/10/15 12:25 AJB Total Alkalinity as CaCO3 [471-34-1]^ 22 mg/L 1 14 15 5619002 EPA 310.2 02/19/15 11:07 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.3 mg/L 1 0.32 1.0 5619003 SM 5310B-2000 02/20/15 18:10 RSA Description: SR 1555 Lab Sample ID:C501626-04 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 10:30 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5B10032 EPA 6010C 02/11/15 11:22 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 210 Lab Sample ID:C501626-05 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 09:45 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 5B10032 EPA 6010C 02/11/15 11:24 ]DH Calcium [7440-70-2]^ 5050 ug/L 1 39.0 100 5610032 EPA 6010C 02/11/15 11:24 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5B10032 EPA 6010C 02/11/15 11:24 ]DH Lead [7439-92-1]^ ND ug/L 1 2.10 10.0 5B10032 EPA 6010C 02/11/15 11:24 ]DH Magnesium [7439-95-4]^ 1950 ug/L 1 23.0 100 5610032 EPA 6010C 02/11/15 11:24 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 5B10032 EPA 6010C 02/11/15 11:24 ]DH Potassium [7440-09-7]^ 2130 ug/L 1 150 500 5610032 EPA 6010C 02/11/15 11:24 ]DH Sodium [7440-23-5]^ 5390 ug/L 1 400 500 5610032 EPA 6010C 02/11/15 11:24 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 5B10032 EPA 6010C 02/11/15 11:24 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 5B11001 EPA 350.1 02/11/15 09:37 SHA Chloride [16887-00-6]^ 6.0 mg/L 1 2.2 5.0 5610013 EPA 300.0 02/10/15 12:42 AJB Sulfate as SO4 [14808-79-8]^ 4.6 J mg/L 1 2.9 5.0 5610013 EPA 300.0 02/10/15 12:42 AJB Total Alkalinity as CaCO3 [471-34-1]^ 22 mg/L 1 14 15 5619002 EPA 310.2 02/19/15 11:10 AJB Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando certified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.4 mg/L 1 0.32 1.0 5619003 SM 5310B-2000 02/20/15 18:10 RSA Description: NC 210 Lab Sample ID:C501626-06 Received: 02/06/15 15:30 Matrix: Water Sampled:02/06/15 09:45 Work Order: C501626 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5B10032 EPA 6010C 02/11/15 11:27 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SB10032 - EPA 3005A Blank (5B30032-BLK3) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 2.10 U 10.0 ug/L Magnesium 23.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L Blank (5B30032-BLK2) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L LCS (5B10032-BSi) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:13 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.5 1.00 ug/L 20.0 103 80-120 Calcium 2110 100 ug/L 2000 105 80-120 Copper 198 10.0 ug/L 200 99 80-120 Lead 211 10.0 ug/L 200 105 80-120 Magnesium 2060 100 ug/L 2000 103 80-120 Nickel 206 10.0 ug/L 200 103 80-120 Potassium 9950 500 ug/L 10000 100 80-120 Sodium 10100 500 ug/L 10000 101 80-120 Zinc 208 10.0 ug/L 200 104 80-120 Matrix Spike (5B10032-MS3) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:19 Source: C417026-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Cadmium 21.3 1.00 ug/L 20.0 0.360 U 106 75-125 Calcium 38900 100 ug/L 2000 37600 65 75-125 QM-OS Copper 201 10.0 ug/L 200 1.60 U 101 75-125 Lead 209 10.0 ug/L 200 2.10 U 105 75-125 Magnesium 9010 100 ug/L 2000 7190 91 75-125 Nickel 212 10.0 ug/L 200 1.80 U 106 75-125 Potassium 13200 500 ug/L 10000 3210 100 75-125 Sodium 24400 500 ug/L 10000 14600 98 75-125 Zinc 241 10.0 ug/L 200 25.2 108 75-125 Matrix Spike Dup (5B10032-MSDS) Prepared: 02/SO/2015 16:04 Analyzed: 02/11/2015 10:21 Source: C417026-03 Analvte Cadmium Calcium Copper Lead Result Flaq PQL 20.7 1.00 39900 100 205 10.0 213 10.0 Spike Units Level ug/L 20.0 ug/L 2000 ug/L 200 ug/L 200 Source %REC Result %REC Limits RPD 0.360 U 104 75-125 3 37600 112 75-125 2 1.60 U 102 75-125 2 2.10 U 106 75-125 2 RPD Limit Notes 20 20 20 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SB10032 - EPA 3005A - Continued Matrix Spike Dup (5B30032-MSDl) Continued Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:21 Source: C417026-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Magnesium 9420 100 ug/L 2000 7190 111 75-125 4 20 Nickel 206 10.0 ug/L 200 1.80 U 103 75-125 3 20 Potassium 13700 500 ug/L 10000 3210 105 75-125 3 20 Sodium 25100 500 ug/L 10000 14600 105 75-125 3 20 Zinc 235 10.0 ug/L 200 25.2 105 75-125 3 20 Post Spike (5610032-PS3) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:24 Source: C417026-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0197 0.00100 mg/L 0.0200 0.000107 98 80-120 Calcium 38.2 0.100 mg/L 2.00 37.6 26 80-120 QM-08 Copper 0.185 0.0100 mg/L 0.200 0.000744 92 80-120 Lead 0.192 0.0100 mg/L 0.200 -0.00114 96 80-120 Magnesium 8.64 0.100 mg/L 2.00 7.19 73 80-120 QM-08 Nickel 0.186 0.0100 mg/L 0.200 -0.000482 93 80-120 Potassium 12.4 0.500 mg/L 10.0 3.21 92 80-120 Sodium 23.3 0.500 mg/L 10.0 14.6 87 80-120 Zinc 0.213 0.0100 mg/L 0.200 0.0252 94 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SB20032 - EPA 3005A Blank (SB30032-BLK2) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:10 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (5B10032-BSl) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 198 10.0 ug/L 200 99 80-120 Matrix Spike (5B10032-MS3) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:19 Source: C417026-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 201 10.0 ug/L 200 1.60 U 101 75-125 Matrix Spike Dup (5B10032-MSDS) Prepared: 02/SO/2015 16:04 Analyzed: 02/11/2015 10:21 Source: C417026-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 205 10.0 ug/L 200 1.60 U 102 75-125 2 20 Post Spike (5610032-PS3) Prepared: 02/10/2015 16:04 Analyzed: 02/11/2015 10:24 Source: C417026-03 Analvte Copper Result Flaq POL 0.185 0.0100 Spike Source %REC Units Level Result %REC Limits RPD mg/L 0.200 0.000744 92 80-120 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 12 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SB10013 - NO PREP Blank (SB30013-BLK3) Prepared: 02/SO/2015 08:50 Analyzed: 02/10/2015 10:11 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (5B30013-BSl) Prepared: 02/10/2015 08:50 Analyzed: 02/10/2015 10:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 48 5.0 mg/L 50.0 96 90-110 Sulfate as SO4 47 5.0 mg/L 50.0 95 90-110 Matrix Spike (5B10013-MSl) Prepared: 02/10/2015 08:50 Analyzed: 02/10/2015 12:59 Source: C500553-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 36 5.0 mg/L 20.0 17 96 90-110 Sulfate as 504 31 5.0 mg/L 20.0 13 89 90-110 QM-OS Matrix Spike Dup (5B10013-MSDl) Prepared: 02/10/2015 08:50 Analyzed: 02/10/2015 13:49 Source: C500553-04 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 37 5.0 mg/L 20.0 17 100 90-110 2 10 Sulfate as SO4 32 5.0 mg/L 20.0 13 93 90-110 2 10 Batch SBIZ001 - NO PREP Blank (5B31001-BLK3) Prepared: 02/11/2015 07:06 Analyzed: 02/11/2015 08:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (5B11001-BSi) Prepared: 02/11/2015 07:06 Analyzed: 02/11/2015 08:43 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.96 0.10 mg/L 0.997 96 90-110 Matrix Spike (5B11001-MSl) Prepared: 02/11/2015 07:06 Analyzed: 02/11/2015 08:48 Source: C416551-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 18 2.0 mg/L 7.96 10 96 90-110 Matrix Spike Dup (5B33001-MSDi) Prepared: 02/11/2015 07:06 Analyzed: 02/11/2015 08:50 Source: C416551-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Ammonia as N 18 2.0 mg/L 7.96 10 101 90-110 2 10 Batch SB19002 - NO PREP Blank (SB39002-BLK3) Prepared: 02/19/2015 07:58 Analyzed: 02/19/2015 10:48 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 12 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SB19002 - NO PREP - Continued �� www.encolabs.com Blank (5B39002-BLK3) Continued Prepared: 02/19/2015 07:58 Analyzed: 02/19/2015 10:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (5B39002-BSi) Prepared: 02/19/2015 07:58 Analyzed: 02/19/2015 10:49 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 97 15 mg/L 100 97 80-120 Matrix Spike (5B19002-MSl) Prepared: 02/19/2015 07:58 Analyzed: 02/19/2015 10:51 Source: C501868-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 710 75 mg/L 200 500 104 80-120 Matrix Spike Dup (5B39002-MSDi) Prepared: 02/19/2015 07:58 Analyzed: 02/19/2015 10:52 Source: C501868-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 710 75 mg/L 200 500 104 80-120 0.01 25 Classical Chemistry Parameters (Dissolved) - Quality Control Batch SB19003 - NO PREP Blank (5B39003-BLK3) Prepared: 02/20/2015 10:00 Analyzed: 02/20/2015 18:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.32 U 1.0 mg/L LCS (5B19003-BSi) Prepared: 02/20/2015 10:00 Analyzed: 02/20/2015 18:10 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 37 1.0 mg/L 40.0 93 85-115 Matrix Spike (5B19003-MSl) Prepared: 02/20/2015 10:00 Analyzed: 02/20/2015 18:10 Source: A500757-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 40 1.0 mg/L 40.0 039 99 85-115 Matrix Spike Dup (5B39003-MSDi) Prepared: 02/20/2015 10:00 Analyzed: 02/20/2015 18:10 Source: A500757-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 39 1.0 mg/L 40.0 0.39 97 85-115 2 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 12 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-OS Post-digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 12 E�1VI�;OM�w1�FdT1�L. 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'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, April 22, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C504461 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, April 7, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 12 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC-50 Lab ID: C504461-03 Sampled: 04/07/15 14:45 Received: 04/07/15 15:30 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 OS/OS/15 04/09/15 09:53 04/10/15 18:29 EPA 310.2 04/21/15 04/10/15 07:22 04/10/15 09:32 EPA 350.1 OS/OS/15 04/10/15 10:02 04/10/15 13:16 EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 13:41 SM 5310B-2000 OS/OS/15 04/15/15 15:00 04/15/15 20:59 Client ID: NC-50 Lab ID: C504461-02 Sampled: 04/07/15 14:45 Received: 04/07/15 15:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 14:39 Client ID: SR 1555 Lab ID: C504461-03 Sampled: 04/07/15 14:15 Received: 04/07/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(s) Analvsis Date/Time(s) EPA 300.0 OS/OS/15 04/09/15 09:53 04/10/15 18:47 EPA 310.2 04/21/15 04/10/15 07:22 04/10/15 09:33 EPA 350.1 OS/OS/15 04/10/15 10:02 04/10/15 13:18 EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 14:42 SM 5310B-2000 OS/OS/15 04/15/15 15:00 04/15/15 20:59 Client ID: SR 1555 Lab ID: C504461-04 Sampled: 04/07/15 14:15 Received: 04/07/15 15:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 14:44 Client ID: NC 210 Lab ID: C504461-OS Sampled: 04/07/15 13:45 Received: 04/07/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 OS/OS/15 04/09/15 09:53 04/10/15 19:06 EPA 310.2 04/21/15 04/10/15 07:22 04/10/15 09:34 EPA 350.1 OS/OS/15 04/10/15 10:02 04/10/15 13:19 EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 14:47 SM 5310B-2000 OS/OS/15 04/15/15 15:00 04/15/15 20:59 Client ID: NC 210 Lab ID: C504461-06 Sampled: 04/07/15 13:45 Received: 04/07/15 15:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C 10/04/15 04/16/15 11:48 04/17/15 14:49 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 12 �� www.encolabs.com SAMPLE DETECTION SUMMARY ClientID: NC-50 LabID: C504461-OS Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 7000 39.0 100 ug/L EPA 6010C Chloride 11 2.2 5.0 mg/L EPA 300.0 Copper- Total 5.91 JB 1.60 10.0 ug/L EPA 6010C J-01 Magnesium - Total 2290 29.0 100 ug/L EPA 6010C Potassium - Total 2570 150 500 ug/L EPA 6010C Sodium - Total 5620 400 500 ug/L EPA 6010C Sulfate as SO4 4.9 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 29 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 6.1 0.34 1.0 mg/L SM 5310B-2000 Client ID: NC-50 Lab ID: C504461-02 Anal e Results Flaa MDL Q Units Method Notes Copper- Dissolved 4.92 JB 1.60 10.0 ug/L EPA 6010C J-01 Client ID: SR 1555 Lab ID: C504461-03 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 6550 39.0 100 ug/L EPA 6010C Chloride 8.3 2.2 5.0 mg/L EPA 300.0 Copper- Total 4.13 JB 1.60 10.0 ug/L EPA 6010C J-01 Magnesium - Total 2230 29.0 100 ug/L EPA 6010C Potassium - Total 2330 150 500 ug/L EPA 6010C Sodium - Total 5040 400 500 ug/L EPA 6010C Sulfate as SO4 4.0 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 30 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.8 0.34 1.0 mg/L SM 5310B-2000 Client ID: SR 1555 Lab ID: C504461-04 Analvte Results Flaa MDL Q Units Method Notes Copper- Dissolved 4.17 JB 1.60 10.0 ug/L EPA 6010C J-01 Client ID: NC 210 Lab ID: C504461-05 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 6850 39.0 100 ug/L EPA 6010C Chloride 8.5 2.2 5.0 mg/L EPA 300.0 Copper- Total 4.65 JB 1.60 10.0 ug/L EPA 6010C J-01 Magnesium - Total 2660 29.0 100 ug/L EPA 6010C Potassium - Total 2460 150 500 ug/L EPA 6010C Sodium - Total 5460 400 500 ug/L EPA 6010C Sulfate as SO4 4.2 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 26 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.1 0.34 1.0 mg/L SM 5310B-2000 Client ID: NC 210 Lab ID: C504461-06 Anal e Results Flaa MDL Q Units Method Notes Copper- Dissolved 4.13 JB 1.60 10.0 ug/L EPA 6010C J-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C504461-01 Received: 04/07/15 15:30 Matrix: Water Sampled:04/07/15 14:45 Work Order: C504461 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SD16018 EPA 6010C 04/17/15 13:41 ]DH Calcium [7440-70-2]^ 7000 ug/L 1 39.0 100 SD16018 EPA 6010C 04/17/15 13:41 ]DH Copper[7440-50-8]^ 5.91 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 13:41 ]DH ]-01 Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SD16018 EPA 6010C 04/17/15 13:41 ]DH Magnesium [7439-95-4]^ 2290 ug/L 1 29.0 100 SD16018 EPA 6010C 04/17/15 13:41 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SD16018 EPA 6010C 04/17/15 13:41 ]DH Potassium [7440-09-7]^ 2570 ug/L 1 150 500 SD16018 EPA 6010C 04/17/15 13:41 ]DH Sodium [7440-23-5]^ 8620 ug/L 1 400 500 SD16018 EPA 6010C 04/17/15 13:41 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SD16018 EPA 6010C 04/17/15 13:41 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SD10011 EPA 350.1 04/10/15 13:16 SHA Chloride [16887-00-6]^ 11 mg/L 1 2.2 5.0 SD09010 EPA 300.0 04/10/15 18:29 SHA Sulfate as SO4 [14808-79-8]^ 4.9 J mg/L 1 2.9 5.0 SD09010 EPA 300.0 04/10/15 18:29 SHA Total Alkalinity as CaCO3 [471-34-1]^ 29 mg/L 1 14 15 SD10001 EPA 310.2 04/10/15 09:32 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 6.1 mg/L 1 0.34 1.0 SD15005 SM 5310B-2000 04/15/15 20:59 RSA Description: NC-50 Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C504461-02 S a m p l e d: 04/ 0 7/ 15 14: 45 Sampled By: Nancy Scott Received: 04/07/ 15 15:30 Work Order: C504461 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 4.92 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 14:39 ]DH J-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: SR 1555 Lab Sample ID:C504461-03 Received: 04/07/15 15:30 Matrix: Water Sampled:04/07/15 14:15 Work Order: C504461 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SD16018 EPA 6010C 04/17/15 14:42 ]DH Calcium [7440-70-2]^ 6550 ug/L 1 39.0 100 SD16018 EPA 6010C 04/17/15 14:42 ]DH Copper[7440-50-8]^ 4.13 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 14:42 ]DH ]-01 Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SD16018 EPA 6010C 04/17/15 14:42 ]DH Magnesium [7439-95-4]^ 2230 ug/L 1 29.0 100 SD16018 EPA 6010C 04/17/15 14:42 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SD16018 EPA 6010C 04/17/15 14:42 ]DH Potassium [7440-09-7]^ 2330 ug/L 1 150 500 SD16018 EPA 6010C 04/17/15 14:42 ]DH Sodium [7440-23-5]^ 8040 ug/L 1 400 500 SD16018 EPA 6010C 04/17/15 14:42 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SD16018 EPA 6010C 04/17/15 14:42 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SD10011 EPA 350.1 04/10/15 13:18 SHA Chloride [16887-00-6]^ 8.3 mg/L 1 2.2 5.0 SD09010 EPA 300.0 04/10/15 18:47 SHA Sulfate as SO4 [14808-79-8]^ 4.0 J mg/L 1 2.9 5.0 SD09010 EPA 300.0 04/10/15 18:47 SHA Total Alkalinity as CaCO3 [471-34-1]^ 30 mg/L 1 14 15 SD10001 EPA 310.2 04/10/15 09:33 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.8 mg/L 1 0.34 1.0 SD15005 SM 5310B-2000 04/15/15 20:59 RSA Description: SR 1555 Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C504461-04 Sampled: 04/07/15 14:15 Sampled By: Nancy Scott Received: 04/07/ 15 15:30 Work Order: C504461 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 4.17 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 14:44 ]DH J-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 12 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 210 Lab Sample ID:C504461-05 Received: 04/07/15 15:30 Matrix: Water Sampled:04/07/15 13:45 Work Order: C504461 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SD16018 EPA 6010C 04/17/15 14:47 ]DH Calcium [7440-70-2]^ 6850 ug/L 1 39.0 100 SD16018 EPA 6010C 04/17/15 14:47 ]DH Copper[7440-50-8]^ 4.65 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 14:47 ]DH ]-01 Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SD16018 EPA 6010C 04/17/15 14:47 ]DH Magnesium [7439-95-4]^ 2660 ug/L 1 29.0 100 SD16018 EPA 6010C 04/17/15 14:47 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SD16018 EPA 6010C 04/17/15 14:47 ]DH Potassium [7440-09-7]^ 2460 ug/L 1 150 500 SD16018 EPA 6010C 04/17/15 14:47 ]DH Sodium [7440-23-5]^ 8460 ug/L 1 400 500 SD16018 EPA 6010C 04/17/15 14:47 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SD16018 EPA 6010C 04/17/15 14:47 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SD10011 EPA 350.1 04/10/15 13:19 SHA Chloride [16887-00-6]^ 8.5 mg/L 1 2.2 5.0 SD09010 EPA 300.0 04/10/15 19:06 SHA Sulfate as SO4 [14808-79-8]^ 4.2 J mg/L 1 2.9 5.0 SD09010 EPA 300.0 04/10/15 19:06 SHA Total Alkalinity as CaCO3 [471-34-1]^ 26 mg/L 1 14 15 SD10001 EPA 310.2 04/10/15 09:34 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.1 mg/L 1 0.34 1.0 SD15005 SM 5310B-2000 04/15/15 20:59 RSA Description: NC 210 Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C504461-06 S a m p l e d: 04/ 0 7/ 15 13 : 45 Sampled By: Nancy Scott Received: 04/07/ 15 15:30 Work Order: C504461 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 4.13 ]B ug/L 1 1.60 10.0 SD16018 EPA 6010C 04/17/15 14:49 ]DH J-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SD16018 - EPA 3005A Blank (SD36018-BLK3) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 2.56 J 10.0 ug/L Lead 3.10 U 10.0 ug/L Magnesium 29.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (SD16018-BSl) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:38 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 22.3 1.00 ug/L 20.0 112 80-120 Calcium 2320 100 ug/L 2000 116 80-120 Copper 216 B 10.0 ug/L 200 108 80-120 Lead 222 10.0 ug/L 200 111 80-120 Magnesium 2190 100 ug/L 2000 110 80-120 Nickel 221 10.0 ug/L 200 110 80-120 Potassium 11200 500 ug/L 10000 112 80-120 Sodium 10900 500 ug/L 10000 109 80-120 Zinc 223 10.0 ug/L 200 111 80-120 Matrix Spike (SD16018-MS3) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:43 Source: C504461-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 22.6 1.00 ug/L 20.0 0.360 U 113 75-125 Calcium 9020 100 ug/L 2000 7000 101 75-125 Copper 223 B 10.0 ug/L 200 5.91 109 75-125 Lead 223 10.0 ug/L 200 3.10 U 112 75-125 Magnesium 4420 100 ug/L 2000 2290 106 75-125 Nickel 224 10.0 ug/L 200 1.80 U 112 75-125 Potassium 13600 500 ug/L 10000 2570 111 75-125 Sodium 19300 500 ug/L 10000 8620 107 75-125 Zinc 229 10.0 ug/L 200 3.80 U 114 75-125 Matrix Spike Dup (SD36018-MSDl) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:46 Source: C504461-03 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc FINAL Spike Source %REC Result F� � Units Level Result %REC Limits RPD 23.3 1.00 ug/L 20.0 0.360 U 116 75-125 3 8640 100 ug/L 2000 7000 82 75-125 4 221 B 10.0 ug/L 200 5.91 107 75-125 1 223 10.0 ug/L 200 3.10 U 111 75-125 0.1 4290 100 ug/L 2000 2290 100 75-125 3 232 10.0 ug/L 200 1.80 U 116 75-125 3 13300 500 ug/L 10000 2570 108 75-125 2 18800 500 ug/L 10000 8620 102 75-125 3 236 10.0 ug/L 200 3.80 U 118 75-125 3 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD Limit Notes 20 20 20 20 20 20 20 20 20 Page 7 of 12 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SD16018 - EPA 3005A - Continued Post Spike (SD36018-PS3) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:48 Source: C504461-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0219 0.00100 mg/L 0.0200 -7.35E-5 109 80-120 Calcium 8.61 0.100 mg/L 2.00 7.00 80 80-120 Copper 0.209 B 0.0100 mg/L 0.200 0.00591 102 80-120 Lead 0.208 0.0100 mg/L 0.200 2.07E-5 104 80-120 Magnesium 4.20 0.100 mg/L 2.00 2.29 96 80-120 Nickel 0.217 0.0100 mg/L 0.200 8.54E-5 108 80-120 Potassium 12.7 0.500 mg/L 10.0 2.57 102 80-120 Sodium 18.4 0.500 mg/L 10.0 8.62 98 80-120 Zinc 0.222 0.0100 mg/L 0.200 0.00209 110 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SD16018 - EPA 3005A Blank (SD16018-BLK2) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 3.11 J 10.0 ug/L LCS (SD16018-BSl) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:38 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 216 B 10.0 ug/L 200 108 80-120 Matrix Spike (5D16018-MS3) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:43 Source: C504461-03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 223 B 10.0 ug/L 200 5.91 109 75-125 Matrix Spike Dup (SD16018-MSDS) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:46 Source: C504461-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 221 B 10.0 ug/L 200 5.91 107 75-125 1 20 Post Spike (SD36018-PS3) Prepared: 04/16/2015 11:48 Analyzed: 04/17/2015 13:48 Source: C504461-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 0.209 B 0.0100 mg/L 0.200 0.00591 102 80-120 Classical Chemistry Parameters - Quality Control Batch SD09010 - NO PREP Blank (SD09010-BLK3) Prepared: 04/09/2015 09:53 Analyzed: 04/10/2015 10:08 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 12 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SD09010 - NO PREP - Continued LCS (SD09030-BS3) Prepared: 04/09/2015 09:53 Analyzed: 04/10/2015 12:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 53 5.0 mg/L 50.0 105 90-110 Sulfate as SO4 50 5.0 mg/L 50.0 101 90-110 Matrix Spike (SD09010-MSS) Prepared: 04/09/2015 09:53 Analyzed: 04/10/2015 12:18 Source: C502700-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 680 50 mg/L 200 450 117 90-110 QM-07 Sulfate as 504 340 50 mg/L 200 140 100 90-110 Matrix Spike (5D09030-MS2) Prepared: 04/09/2015 09:53 Analyzed: 04/10/2015 13:14 Source: C502701-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 680 50 mg/L 200 460 109 90-110 Sulfate as SO4 330 50 mg/L 200 130 97 90-110 Matrix Spike Dup (SD09030-MSDl) Prepared: 04/09/2015 09:53 Analyzed: 04/10/2015 12:37 Source: C502700-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 370 50 mg/L 200 450 NR 90-110 59 10 QM-07, QM-11 Sulfate as 504 180 50 mg/L 200 140 19 90-110 62 10 QM-07, QM-11 Batch SD20001 - NO PREP Blank (5D30001-BLKl) Prepared: 04/10/2015 07:22 Analyzed: 04/10/2015 09:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (SD10001-BSl) Prepared: 04/10/2015 07:22 Analyzed: 04/10/2015 09:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 101 80-120 Matrix Spike (SD10001-MS3) Prepared: 04/SO/2015 07:22 Analyzed: 04/10/2015 09:13 Source: C503561-04 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 370 75 mg/L 200 170 101 80-120 Matrix Spike Dup (5D10001-MSDS) Prepared: 04/10/2015 07:22 Analyzed: 04/10/2015 09:13 Source: C503561-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 350 75 mg/L 200 170 93 80-120 5 25 Batch SD20011 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 12 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SDZ0011 - NO PREP - Continued �� www.encolabs.com Blank (SD30011-BLK3) Prepared: 04/10/2015 10:02 Analyzed: 04/10/2015 12:23 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (SDS0011-BSi) Prepared: 04/SO/2015 10:02 Analyzed: 04/10/2015 12:25 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.97 0.10 mg/L 0.997 97 90-110 Matrix Spike (SDS0011-MSS) Prepared: 04/10/2015 10:02 Analyzed: 04/10/2015 12:30 Source: C502640-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.35 0.10 mg/L 0387 0.045 U 91 90-110 Matrix Spike (SD10031-M52) Prepared: 04/10/2015 10:02 Analyzed: 04/10/2015 12:36 Source: C502681-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 150 10 mg/L 39.8 100 112 90-110 QM-OS Matrix Spike Dup (SD30031-MSDS) Prepared: 04/SO/2015 10:02 Analyzed: 04/10/2015 12:32 Source: C502640-02 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.36 0.10 mg/L 0.387 0.045 U 94 90-110 4 10 Classical Chemistry Parameters (Dissolved) - Quality Control Batch SDZ5005 - NO PREP Blank (SD35005-BLK3) Prepared: 04/15/2015 15:00 Analyzed: 04/15/2015 20:59 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.34 U 1.0 mg/L LCS (SD35005-BSl) Prepared: 04/15/2015 15:00 Analyzed: 04/15/2015 20:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 41 1.0 mg/L 40.0 103 85-115 Matrix Spike (SD15005-M51) Prepared: 04/15/2015 15:00 Analyzed: 04/15/2015 20:59 Source: A502188-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 68 1.0 mg/L 40.0 30 94 85-115 Matrix Spike Dup (SD35005-MSDS) Prepared: 04/15/2015 15:00 Analyzed: 04/15/2015 20:59 Source: A502188-01 Analvte Total Organic Carbon Result Flaq PQL 72 1.0 Spike Source %REC Units Level Result %REC Limits RPD mg/L 40.0 30 106 85-115 7 RPD Limit Notes 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 12 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. 7-03 Result is estimated due to positive results in the associated method blank. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 12 �f�Va��Ni�lI�MT14L �ONSE�VATI�N NJIBO�ATORIE� Gl�i�wlw-O�-�USTt� ��C€�RD wrwTwr.encawab�.t�m �� ii�� r�..,�-� ,.-.�,i r �u i; ��rac N a[�,_, s,u �� : i � i,�� n! �+w..i ��er;ra [ i �h I �:S . 1 �x-'i t r� II� R - � + �-2x� irr �- rs: ' - - µur{a�:,.,.,�, i,��'di>7'rr:yr:.i-u�. �.:u�.:�r n�: s�:a�ritu��[-+i�in �?�npar,-r a,.�a ra.�`.nqltb�.�.;c i- F�FiL�'�.' rH _ .:r,_- •��,�n�;�y��s=n � C �+r�taahn+i�w. i'ie�lr�..sie#Fiun�raun�t E t t �_ �� t r �Cc �7' � U � �� , � � � � �i�-�- s , :-- �m�a�.�.-,,:�., S �; � � f v��? 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'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, May 21, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C505742 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, May 7, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 13 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC 210 Lab ID: C505742-03 Sampled: O5/07/15 13:25 Received: O5/07/15 15:17 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 06/04/15 OS/13/15 22:01 OS/13/15 22:01 EPA 310.2 OS/21/15 OS/08/15 09:38 OS/08/15 13:10 EPA 350.1 06/04/15 OS/13/15 07:21 OS/13/15 09:57 EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 11:06 SM 5310B-2000 06/04/15 OS/19/15 08:25 OS/19/15 16:44 Client ID: SR 1555 Lab ID: C505742-02 Sampled: OS/07/15 13:55 Received: OS/07/15 15:17 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 300.0 06/04/15 OS/13/15 22:19 OS/13/15 22:19 EPA 310.2 OS/21/15 OS/08/15 09:38 OS/08/15 13:10 EPA 350.1 06/04/15 OS/13/15 07:21 OS/13/15 09:59 EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 12:03 SM 5310B-2000 06/04/15 OS/19/15 08:25 OS/19/15 16:44 Client ID: NC-50 Lab ID: C505742-03 Sampled: OS/07/15 14:30 Received: OS/07/15 15:17 Parameter Hold Date/Time(s) Pren Date/Time(s) Analvsis Date/Time(s) EPA 300.0 06/04/15 OS/13/15 22:36 OS/13/15 22:36 EPA 310.Z OS/21/15 OS/08/15 09:38 OS/08/15 13:11 EPA 350.1 06/04/15 OS/13/15 07:21 OS/13/15 10:01 EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 12:06 SM 5310B-2000 06/04/15 O5/19/15 08:25 OS/19/15 16:44 Client ID: NC 210 Dissolved Lab ID: C505742-04 Sampled: OS/07/15 13:25 Received: OS/07/15 15:17 Parameter Hold Date/Time(s) Preu Date/Time(s) Analvsis Date/Time(s) EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 12:08 Client ID: SR 1555 Dissolved Lab ID: C505742-OS Sampled: OS/07/15 13:55 Received: OS/07/15 15:17 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 12:11 Client ID: NC 50 Dissolved Lab ID: C505742-06 Sampled: O5/07/15 14:30 Received: O5/07/15 15:17 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C 11/03/15 OS/18/15 16:30 OS/20/15 12:13 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 13 �� www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: NC 210 Lab ID: C505742-OS Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.060 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 5790 39.0 100 ug/L EPA 6010C Chloride 7.1 2.2 5.0 mg/L EPA 300.0 Copper - Total 2.01 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 2270 29.0 100 ug/L EPA 6010C Potassium - Total 2360 150 500 ug/L EPA 6010C Sodium - Total 7070 400 500 ug/L EPA 6010C Sulfate as SO4 3.8 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 25 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.3 0.34 1.0 mg/L SM 5310B-2000 Client ID: SR 1555 Lab ID: C505742-02 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.078 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 5460 39.0 100 ug/L EPA 6010C Chloride 7.3 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2030 29.0 100 ug/L EPA 6010C Potassium - Total 2160 150 500 ug/L EPA 6010C Sodium - Total 7500 400 500 ug/L EPA 6010C Sulfate as SO4 3.8 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 21 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.9 0.34 1.0 mg/L SM 5310B-2000 Client ID: NG50 Lab ID: C505742-03 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.051 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6310 39.0 100 ug/L EPA 6010C Chloride 8.8 2.2 5.0 mg/L EPA 300.0 Copper - Total 2.03 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 1970 29.0 100 ug/L EPA 6010C Potassium - Total 2500 150 500 ug/L EPA 6010C Sodium - Total 7010 400 500 ug/L EPA 6010C Sulfate as SO4 4.2 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 19 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 6.0 0.34 1.0 mg/L SM 5310B-2000 Client ID: NC 50 Dissolved Lab ID: C505742-06 Anal e Results Flaa MDL Q Units Method Notes Copper - Dissolved 1.75 J 1.60 10.0 ug/L EPA 6010C FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 210 Lab Sample ID:C505742-01 Received: 05/07/15 15:17 Matrix: Water Sampled:05/07/15 13:25 Work Order: C505742 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SE18026 EPA 6010C OS/20/15 11:06 ]DH Calcium [7440-70-2]^ 5790 ug/L 1 39.0 100 SE18026 EPA 6010C OS/20/15 11:06 ]DH Copper[7440-50-8]^ 2.01 J ug/L 1 1.60 10.0 SE18026 EPA 6010C OS/20/15 11:06 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SE18026 EPA 6010C OS/20/15 11:06 ]DH Magnesium [7439-95-4]^ 2270 ug/L 1 29.0 100 SE18026 EPA 6010C OS/20/15 11:06 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SE18026 EPA 6010C OS/20/15 11:06 ]DH Potassium [7440-09-7]^ 2360 ug/L 1 150 500 SE18026 EPA 6010C OS/20/15 11:06 ]DH Sodium [7440-23-5]^ 7070 ug/L 1 400 500 SE18026 EPA 6010C OS/20/15 11:06 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 SE18026 EPA 6010C OS/20/15 11:06 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.060 J mg/L 1 0.045 0.10 SE13001 EPA 350.1 OS/13/15 09:57 SHA Chloride [16887-00-6]^ 7.1 mg/L 1 2.2 5.0 SE13007 EPA 300.0 OS/13/15 22:01 AJB Sulfate as SO4 [14808-79-8]^ 3.8 J mg/L 1 2.9 5.0 SE13007 EPA 300.0 OS/13/15 22:01 AJB Total Alkalinity as CaCO3 [471-34-1]^ 25 mg/L 1 14 15 SE08009 EPA 310.2 OS/08/15 13:10 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.3 mg/L 1 0.34 1.0 SE19004 SM 5310B-2000 OS/19/15 16:44 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: SR 1555 Lab Sample ID:C505742-02 Received: 05/07/15 15:17 Matrix: Water Sampled:05/07/15 13:55 Work Order: C505742 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SE18026 EPA 6010C OS/20/15 12:03 ]DH Calcium [7440-70-2]^ 5460 ug/L 1 39.0 100 SE18026 EPA 6010C OS/20/15 12:03 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SE18026 EPA 6010C OS/20/15 12:03 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SE18026 EPA 6010C OS/20/15 12:03 ]DH Magnesium [7439-95-4]^ 2030 ug/L 1 29.0 100 SE18026 EPA 6010C OS/20/15 12:03 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SE18026 EPA 6010C OS/20/15 12:03 ]DH Potassium [7440-09-7]^ 2160 ug/L 1 150 500 SE18026 EPA 6010C OS/20/15 12:03 ]DH Sodium [7440-23-5]^ 7500 ug/L 1 400 500 SE18026 EPA 6010C OS/20/15 12:03 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 SE18026 EPA 6010C OS/20/15 12:03 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.078 J mg/L 1 0.045 0.10 SE13001 EPA 350.1 OS/13/15 09:59 SHA Chloride [16887-00-6]^ 7.3 mg/L 1 2.2 5.0 SE13007 EPA 300.0 OS/13/15 22:19 AJB Sulfate as SO4 [14808-79-8]^ 3.8 J mg/L 1 2.9 5.0 SE13007 EPA 300.0 OS/13/15 22:19 AJB Total Alkalinity as CaCO3 [471-34-1]^ 21 mg/L 1 14 15 SE08009 EPA 310.2 OS/08/15 13:10 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.9 mg/L 1 0.34 1.0 SE19004 SM 5310B-2000 OS/19/15 16:44 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 13 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C505742-03 Received: 05/07/15 15:17 Matrix: Water Sampled:05/07/15 14:30 Work Order: C505742 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SE18026 EPA 6010C OS/20/15 12:06 ]DH Calcium [7440-70-2]^ 6330 ug/L 1 39.0 100 SE18026 EPA 6010C OS/20/15 12:06 ]DH Copper[7440-50-8]^ 2.03 J ug/L 1 1.60 10.0 SE18026 EPA 6010C OS/20/15 12:06 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SE18026 EPA 6010C OS/20/15 12:06 ]DH Magnesium [7439-95-4]^ 1970 ug/L 1 29.0 100 SE18026 EPA 6010C OS/20/15 12:06 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SE18026 EPA 6010C OS/20/15 12:06 ]DH Potassium [7440-09-7]^ 2500 ug/L 1 150 500 SE18026 EPA 6010C OS/20/15 12:06 ]DH Sodium [7440-23-5]^ 7030 ug/L 1 400 500 SE18026 EPA 6010C OS/20/15 12:06 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 SE18026 EPA 6010C OS/20/15 12:06 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.051 J mg/L 1 0.045 0.10 SE13001 EPA 350.1 OS/13/15 10:01 SHA Chloride [16887-00-6]^ 8.8 mg/L 1 2.2 5.0 SE13007 EPA 300.0 OS/13/15 22:36 AJB Sulfate as SO4 [14808-79-8]^ 4.2 J mg/L 1 2.9 5.0 SE13007 EPA 300.0 OS/13/15 22:36 AJB Total Alkalinity as CaCO3 [471-34-1]^ 19 mg/L 1 14 15 SE08009 EPA 310.2 OS/08/15 13:11 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 6.0 mg/L 1 0.34 1.0 SE19004 SM 5310B-2000 OS/19/15 16:44 RSA Description: NC 210 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C505742-04 Sa m pled: 05/07/ 15 13:25 Sampled By: Nancy Scott Received: 05/07/ 15 15:17 Work Order: C505742 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SE18026 EPA 6010C OS/20/15 12:08 ]DH Description: SR 1555 Dissolved Lab Sample ID:C505742-05 Received: 05/07/15 15:17 Matrix: Water Sampled:05/07/15 13:55 Work Order: C505742 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SE18026 EPA 6010C O5/20/15 12:11 JDH Description: NC 50 Dissolved Lab Sample ID:C505742-06 Received: 05/07/15 15:17 Matrix: Water Sampled:05/07/15 14:30 Work Order: C505742 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ 1.75 J ug/L 1 1.60 10.0 SE18026 EPA 6010C OS/20/15 12:13 JDH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 of 13 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SE18026 - EPA 3005A Blank (SE38026-BLK3) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 10:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Magnesium 29.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (SE18026-BSl) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 19.6 1.00 ug/L 20.0 98 80-120 Calcium 2180 100 ug/L 2000 109 80-120 Copper 198 10.0 ug/L 200 99 80-120 Lead 208 10.0 ug/L 200 104 80-120 Magnesium 2020 100 ug/L 2000 101 80-120 Nickel 202 10.0 ug/L 200 101 80-120 Potassium 10400 500 ug/L 10000 104 80-120 Sodium 9990 500 ug/L 10000 100 80-120 Zinc 207 10.0 ug/L 200 104 80-120 Matrix Spike (SE18026-MS3) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:09 Source: C505742-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Calcium 7640 100 ug/L 2000 5790 93 75-125 Copper 190 10.0 ug/L 200 2.01 94 75-125 Lead 198 10.0 ug/L 200 3.10 U 99 75-125 Magnesium 4200 100 ug/L 2000 2270 97 75-125 Nickel 193 10.0 ug/L 200 1.80 U 96 75-125 Potassium 12100 500 ug/L 10000 2360 98 75-125 Sodium 16900 500 ug/L 10000 7070 98 75-125 Zinc 199 10.0 ug/L 200 3.80 U 100 75-125 Matrix Spike Dup (SE18026-MSDi) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:11 Source: C505742-03 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result Flaa 18.7 7600 190 197 4180 193 12100 16700 200 � 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result 0.360 U 5790 2.01 3.10 U 2270 1.80 U 2360 7070 3.80 U %REC 94 91 94 99 96 97 97 96 100 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 RPD 0.6 0.6 0.09 0.4 0.4 0.2 0.5 1 0.5 RPD Limit Notes 20 20 20 20 20 20 20 20 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 13 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SE18026 - EPA 3005A - Continued Post Spike (SE38026-PS3) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:14 Source: C505742-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0187 0.00100 mg/L 0.0200 -0.000124 93 80-120 Calcium 7.63 0.100 mg/L 2.00 5.79 92 80-120 Copper 0.190 0.0100 mg/L 0.200 0.00201 94 80-120 Lead 0.198 0.0100 mg/L 0.200 -0.000677 99 80-120 Magnesium 4.16 0.100 mg/L 2.00 2.27 95 80-120 Nickel 0.192 0.0100 mg/L 0.200 0.000347 96 80-120 Potassium 12.0 0.500 mg/L 10.0 2.36 97 80-120 Sodium 16.5 0.500 mg/L 10.0 7.07 95 80-120 Zinc 0.200 0.0100 mg/L 0.200 0.00366 98 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SE18026 - EPA 3005A Blank (SE18026-BLKl) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 10:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L Blank (SE38026-BLK2) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 10:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (SE18026-BSl) Prepared: O5/18/2015 16:30 Analyzed: O5/20/2015 11:03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 198 10.0 ug/L 200 99 80-120 Matrix Spike (SE18026-MSl) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:09 Source: C505742-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 190 10.0 ug/L 200 2.01 94 75-125 Matrix Spike Dup (SE18026-MSDi) Prepared: OS/18/2015 16:30 Analyzed: OS/20/2015 11:11 Source: C505742-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 190 10.0 ug/L 200 2.01 94 75-125 0.09 20 Post Spike (SE38026-PS3) Prepared: O5/18/2015 16:30 Analyzed: O5/20/2015 11:14 Source: C505742-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 0.190 0.0100 mg/L 0.200 0.00201 94 80-120 Classical Chemistry Parameters - Quality Control Batch SE08009 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 13 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SE08009 - NO PREP - Continaed Blank (SE08009-BLK3) Prepared: OS/08/2015 09:38 Analyzed: OS/08/2015 12:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (SE08009-BSl) Prepared: O5/08/2015 09:38 Analyzed: O5/08/2015 12:55 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 101 80-120 Matrix Spike (SE08009-MSl) Prepared: OS/08/2015 09:38 Analyzed: OS/08/2015 12:56 Source: C504821-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 J 15 mg/L 37.8 14 U 80-120 QM-OS Matrix Spike Dup (SE08009-MSDi) Prepared: OS/08/2015 09:38 Analyzed: OS/08/2015 12:58 Source: C504821-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 15 15 mg/L 37.8 14 U 39 80-120 25 QM-OS Batch SE13001 - NO PREP Blank (SE33001-BLKi) Prepared: O5/13/2015 07:21 Analyzed: O5/13/2015 09:05 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (SE13001-BSS) Prepared: OS/13/2015 07:21 Analyzed: OS/13/2015 09:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.98 0.10 mg/L 0.997 99 90-110 Matrix Spike (SE13001-MS3) Prepared: OS/13/2015 07:21 Analyzed: OS/13/2015 09:09 Source: C402499-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.58 0.10 mg/L 0.387 0.23 91 90-110 Matrix Spike (5E13001-MS2) Prepared: O5/13/2015 07:21 Analyzed: O5/13/2015 09:17 Source: C503988-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 150 10 mg/L 39.8 120 85 90-110 QM-OS Matrix Spike Dup (SE13001-MSDS) Prepared: OS/13/2015 07:21 Analyzed: OS/13/2015 09:13 Source: C402499-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.57 0.10 mg/L 0387 0.23 88 90-110 2 10 QM-OS Batch SE13007 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 13 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SE13007 - NO PREP - Continaed �� www.encolabs.com Blank (SE33007-BLK3) Prepared & Analyzed: OS/13/2015 13:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (SE13007-BSS) Prepared & Analyzed: OS/13/2015 12:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 53 5.0 mg/L 50.0 106 90-110 Sulfate as 504 51 5.0 mg/L 50.0 101 90-110 Matrix Spike (5E13007-MS2) Prepared & Analyzed: O5/14/2015 05:19 Source: C505175-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 73 5.0 mg/L 20.0 51 112 90-110 QM-OS Matrix Spike (SE13007-MS3) Prepared & Analyzed: OS/13/2015 14:43 Source: C504888-02RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 710 50 mg/L 200 480 119 90-110 QM-OS Sulfate as 504 340 50 mg/L 200 130 102 90-110 Matrix Spike (5E13007-MS4) Prepared & Analyzed: O5/13/2015 15:18 Source: C505175-01RE1 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Sulfate as SO4 1600 100 mg/L 400 1100 114 90-110 QM-OS Matrix Spike Dup (SE13007-MSD3) Prepared & Analyzed: OS/13/2015 15:01 Source: C504888-02RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 700 50 mg/L 200 480 112 90-110 2 10 QM-OS Sulfate as 504 330 50 mg/L 200 130 100 90-110 1 10 Classical Chemistry Parameters (Dissolved) - Quality Control Batch SE19004 - NO PREP Blank (SE39004-BLK3) Prepared: OS/19/2015 08:25 Analyzed: OS/19/2015 16:44 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.34 U 1.0 mg/L LCS (SE39004-BSl) Prepared: O5/19/2015 08:25 Analyzed: O5/19/2015 16:44 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 38 1.0 mg/L 40.0 96 85-115 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 13 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters (Dissolved) - Quality Control Batch SE19004 - NO PREP - Continaed Matrix Spike (SE19004-MS3) Prepared: OS/19/2015 08:25 Analyzed: OS/19/2015 16:44 Source: A502833-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 54 1.0 mg/L 40.0 6.9 119 85-115 QM-07 Matrix Spike Dup (SE19004-MSDl) Prepared: O5/19/2015 08:25 Analyzed: O5/19/2015 16:44 Source: A502833-01 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 56 1.0 mg/L 40.0 6.9 124 85-115 3 21 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 13 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 12 of 13 ENVIRONf�ENTAI� C�NSERVATIO�J LABaRATOR�ES CHAtN-�7�-�LfS7flbY R�CORD rwww.encolabs.com �� 10 5 Cr,MPal P_et Ca 4A1� F'qec �tn-. a 3. g 4,cnsr .i�i:c 211 9C � rN io.iv, r 3-� I,�.:_R�al tJf. Uil �n�:�. FL 3�Fa::4 I i..::;m,ill _ F�L,.c_l� �Ov� C3FV �rC c-��Y k r,a07)826-s3ta F3xdaUi�t��,U-�_.yq5 �wi»i�yf-3l�' l=�x(�7412�+t,-b[4ii r say��.i�7-3u90 F=i�i,9ig�.iii?•351:, R�C�P �f Cllont Nome r�4�� w�r�e�r �sy�estad a�niy5�5 Requested 7umaround 1�1 \ 1�4�� f'_�5. 4, 7 a I� v Times AsJdress,� C Proj�t. Name�Besc r �I ' —' f'�.It.'LF 1..�'� '( �� f�� l�, 1 J I � / l,� /� . �'�l� . � p Nnte : Rush r�quasls subJnct in �d�, �l�t,ti'�C �CJ �,�.��'�-l._Y�'�t �\iV'�l�C�itl`l:�Ll4tJk�`�' �_3 zy+ � �c��Qlancelhy�narac�ury Gity;51',+Zip PQ fl! Siilinq Into i � r � C L� z� � r� � � �t i 1'l S��G Y v �� l � !, � ��t � �; Standard Tei Fax Reponi�_y Contad n , J ; � c'�i rii � rr! �� V ��j % 32. - 1� 4 G � �Y1 C� �Cv'� �-� � - � �`t' Exp�dited ��ampler(s) Name, Affiliation (Print) Giiting Gontae� � v 'f' � � o � LL � �r DU+2 / f - . � � � � t 'r i ��.��Sa.rn�ler(,s1 Siq �a� ure Sife L�catian ' Tmc Zun�= _`'� � _ � � � L8� �QfISOfCi@f � 7 " =` ' � � � � � � � �� --- Freservation (SeQ Cradesi iCort�Q�ne as ne«:saary) -. � --- - � i'-ollnction A.A:atnu To+.at. c _.f � j - _ .. Item �" S�nmF,idr ILl {FVnld Idr�nlitic::ii�nnj C�r�Hr:clicrrt Dale Time Connp � Gre� (:.:t� caafe5� �,�nlair�er5 � �clffljJ�C� �'i4lllfTlf:3f1Y5 �1 �_�-1 �7 __ �. _ �_�7� I �S _ . � � . �� \ 4 � �\ �� -.- `��S � � I ��` � ,Y`� lk' �'� �� I � I \ t � 1`-�•�a S�'� � '� 1 -- -- - i -- — � - --- - - -- - � , -- — - ---- � ---- ---- - - - - i -- • � <— Total � of Conta4ners Sample I(IY Fre��red f3y DalerTi�mc �Retinquish� �v Dz �- Tir,E Receiv+�� By � Da�e(iim� ,1 ,� � �'-' 1_ �- �- x_15_ ��-t C�m.menisiS�rrri �I 1'te`ior7ina Rcr�uircrricril�= fieEinquiShetS y . DateTtrn� � e+;ei�rgd Eiy dala/Ticrto Re9rnquisheri8y Oete:T�me Feceived�'y Balcifime Cooier d's & Tesnps cn RecelT�t Cnr.daianr, Up��on Fier;eipf '"� 'L c Acceptabl� UnacceptaCl� Matrix GW-Gruund+vaYer SUSaaI [7W��bri�nkir�Q Wator SE-�edimer.t SW��u�rta�ce W�O�r WW-4Vastewai��r A-Far 6{3Elimr ldelaii in cameru�nt5) Preservaliorn: I-ft� �i-HCI N-F€(�Q3 S-Si250�=1 NO-h�lapFl O-Other (det�,il m cnm�nnnls} rJQCe : AI1 sarn{�Yes suL�mitteci ta EhiCQ LaLs are ira a�..,ro�dance w�,7ta the terms and canduliex�s fist�rl ar tr�e ievaese oq phps 6arm. unpess pror �wriCte�n agren_menis exist San�p�e Preservation Ve�ri�ica�ia�r� ENCO Cary 'V11ork C�r�er� C505742 Proje�t: Swi�t Creek Water Quality �lient: The Catena Group {TH415) Project #: [none] Logged In. 07-M�y-15 �5:55 Lflgged By: Andrew S Coons C5�5742-C11 Cartt Type Pres CPN) pH Cheeked J pk F�djusted Da#e�me Re�gent Us�d,�Comments Req��irem�nt In �ontrpl Adjvsfed C 250mLP+H2SC7� �2 Y Y N f N'A Y I,•�N .l PJA - f7 25DmLP+HN�3 t2 � Y 1 f� 1�6A Y I� �i l NA C5Q57�42-�12 Gont Type - - Pres (PN) PI-i Check�d i pf-� Adjust�d DatelTime Reagent Us�dlComme��ts R�quirement Cn Contro! Adjusted C 250mLP+H2SCJ4 <2 , Y/ fV 1 M1JA. .`r',,1 �l 1 NA C� 25�}mLP-F-f-iNC?3 �2 i Y 1�! NA Y 1(, N! NA � c�os�azg�a� Cont 7' e - Pr�s {pH� pH Ch�ck�d ! Date�rne Y� Requiremenl In Ceprtrcrl P� Adjusted Adlu�t�d �P�g�nt L1sedlComments C 25�mLP��H2S(J4 <2 � Y J N i i�l� Y,+'�_N J NA — D 25�flm�_P�+HNrJ3 . <'� �Y 1 N f NA Y 1'��% 1� NA , R�a ent �l�� Ia 1 � Rea �nt f�ar�e ID � . � 4 F�ea �nt Na�ne ID 5 � Page 1 of 1 =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, June 23, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C505697 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, June 9, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 1 of 14 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC-210 Lab ID: C505697-03 Sampled: 06/09/15 12:05 Received: 06/09/15 14:30 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 07/07/15 06/11/15 08:53 06/11/15 14:29 EPA 310.2 06/23/15 06/15/15 07:48 06/15/15 09:22 EPA 350.1 07/07/15 06/17/15 10:24 06/17/15 12:43 EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:46 SM 5310B-2000 07/07/15 06/18/15 11:15 06/18/15 12:09 Client ID: SR-1555 Lab ID: C505697-02 Sampled: 06/09/15 12:45 Received: 06/09/15 14:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 300.0 07/07/15 06/11/15 08:53 06/11/15 14:46 EPA 310.2 06/23/15 06/15/15 07:48 06/15/15 08:54 EPA 350.1 07/07/15 06/17/15 10:24 06/17/15 12:45 EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:49 SM 5310B-2000 07/07/15 06/18/15 11:15 06/18/15 12:09 Client ID: NC-50 Lab ID: C505697-03 Sampled: O6/09/15 13:25 Received: 06/09/15 14:30 Parameter Hold Date/Time(s) Pren Date/Time(s) Analvsis Date/Time(s) EPA 300.0 07/07/15 06/11/15 OS:53 06/11/15 15:03 EPA 310.Z 06/23/15 06/15/15 07:48 06/15/15 08:57 EPA 350.1 07/07/15 06/17/15 10:24 06/17/15 12:47 EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:51 SM 5310B-2000 07/07/15 06/18/15 11:15 06/18/15 12:09 Client ID: NC-210 Dissolved Lab ID: C505697-04 Sampled: 06/09/15 12:05 Received: 06/09/15 14:30 Parameter Hold Date/Time(s) Preu Date/Time(s) Analvsis Date/Time(s) EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:54 Client ID: SR-1555 Dissolved Lab ID: C505697-OS Sampled: 06/09/15 12:45 Received: 06/09/15 14:30 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:56 Client ID: NC-50 Dissolved Lab ID: C505697-06 Sampled: 06/09/15 13:25 Received: 06/09/15 14:30 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C 12/06/15 06/15/15 11:10 06/18/15 13:59 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 2 of 14 �� www.encolabs.com SAMPLE DETECTION SUMMARY ClientID: NC-210 LabID: C505697-OS Anal e Results Flaa MDL Q Units Method Notes Cadmium - Total 0.360 J 0360 1.00 ug/L EPA 6010C Calcium - Total 7030 B 39.0 100 ug/L EPA 6010C QB-Ol Chloride 7.5 2.2 5.0 mg/L EPA 300.0 Copper- Total 1.74 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 2490 29.0 100 ug/L EPA 6010C Potassium - Total 2310 150 500 ug/L EPA 6010C Sodium - Total 5030 400 500 ug/L EPA 6010C Sulfate as SO4 3.3 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 23 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.3 0.34 1.0 mg/L SM 5310B-2000 Client ID: SR-1555 Lab ID: C505697-02 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 6870 B 39.0 100 ug/L EPA 6010C QB-Ol Chloride 7.2 2.2 5.0 mg/L EPA 300.0 Copper- Total 1.69 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 2180 29.0 100 ug/L EPA 6010C Nickel - Total 2.02 J 1.80 10.0 ug/L EPA 6010C Potassium - Total 2080 150 500 ug/L EPA 6010C Sodium - Total 5520 400 500 ug/L EPA 6010C Sulfate as SO4 3.2 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 32 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 4.2 0.34 1.0 mg/L SM 5310B-2000 Client ID: NG50 Lab ID: C505697-03 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.072 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 8180 B 39.0 100 ug/L EPA 6010C QB-Ol Chloride 9.9 2.2 5.0 mg/L EPA 300.0 Copper- Total 5.53 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 2400 29.0 100 ug/L EPA 6010C Potassium - Total 2990 150 500 ug/L EPA 6010C Sodium - Total 8240 400 500 ug/L EPA 6010C Sulfate as SO4 4.1 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 30 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.9 0.34 1.0 mg/L SM 5310B-2000 Zinc - Total 16.7 3.80 10.0 ug/L EPA 6010C Client ID: NC-210 Dissolved Lab ID: C505697-04 Anal e Results Flaa MDL Q Units Method Notes Copper - Dissolved 1.66 J 1.60 10.0 ug/L EPA 6010C Client ID: NC-50 Dissolved Lab ID: C505697-06 Anal e Results Flaa MDL Q Units Method Notes Copper - Dissolved 2.79 J 1.60 10.0 ug/L EPA 6010C FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 3 of 14 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-210 Lab Sample ID:C505697-01 Received: 06/09/15 14:30 Matrix: Water Sampled:06/09/15 12:05 Work Order: C505697 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ 0.360 J ug/L 1 0.360 1.00 SF15026 EPA 6010C 06/18/15 13:46 ]DH Calcium [7440-70-2]^ 7030 B ug/L 1 39.0 100 SF15026 EPA 6010C 06/18/15 13:46 ]DH QB-Ol Copper[7440-50-8]^ 1.74 J ug/L 1 1.60 10.0 SF15026 EPA 6010C 06/18/15 13:46 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SF15026 EPA 6010C 06/18/15 13:46 ]DH Magnesium [7439-95-4]^ 2490 ug/L 1 29.0 100 SF15026 EPA 6010C 06/18/15 13:46 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SF15026 EPA 6010C 06/18/15 13:46 ]DH Potassium [7440-09-7]^ 2330 ug/L 1 150 500 SF15026 EPA 6010C 06/18/15 13:46 ]DH Sodium [7440-23-5]^ 8030 ug/L 1 400 500 SF15026 EPA 6010C 06/18/15 13:46 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SF15026 EPA 6010C 06/18/15 13:46 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SF17014 EPA 350.1 06/17/15 12:43 SHA Chloride [16887-00-6]^ 7.5 mg/L 1 2.2 5.0 SF11013 EPA 300.0 06/11/15 14:29 AJB Sulfate as SO4 [14808-79-8]^ 3.3 J mg/L 1 2.9 5.0 SF11013 EPA 300.0 06/11/15 14:29 AJB Total Alkalinity as CaCO3 [471-34-1]^ 23 mg/L 1 14 15 SF15009 EPA 310.2 06/15/15 09:22 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.3 mg/L 1 0.34 1.0 SF18004 SM 5310B-2000 06/18/15 12:09 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 4 of 14 �� www.encolabs.com ANALYTICAL RESULTS Description: SR-1555 Lab Sample ID:C505697-02 Received: 06/09/15 14:30 Matrix: Water Sampled:06/09/15 12:45 Work Order: C505697 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SF15026 EPA 6010C 06/18/15 13:49 ]DH Calcium [7440-70-2]^ 6870 B ug/L 1 39.0 100 SF15026 EPA 6010C 06/18/15 13:49 ]DH QB-Ol Copper[7440-50-8]^ 1.69 J ug/L 1 1.60 10.0 SF15026 EPA 6010C 06/18/15 13:49 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SF15026 EPA 6010C 06/18/15 13:49 ]DH Magnesium [7439-95-4]^ 2180 ug/L 1 29.0 100 SF15026 EPA 6010C 06/18/15 13:49 ]DH Nickel[7440-02-0]^ 2.02 J ug/L 1 1.80 10.0 SF15026 EPA 6010C 06/18/15 13:49 ]DH Potassium [7440-09-7]^ 2080 ug/L 1 150 500 SF15026 EPA 6010C 06/18/15 13:49 ]DH Sodium [7440-23-5]^ 8520 ug/L 1 400 500 SF15026 EPA 6010C 06/18/15 13:49 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SF15026 EPA 6010C 06/18/15 13:49 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SF17014 EPA 350.1 06/17/15 12:45 SHA Chloride [16887-00-6]^ 7.2 mg/L 1 2.2 5.0 SF11013 EPA 300.0 06/11/15 14:46 AJB Sulfate as SO4 [14808-79-8]^ 3.2 J mg/L 1 2.9 5.0 SF11013 EPA 300.0 06/11/15 14:46 AJB Total Alkalinity as CaCO3 [471-34-1]^ 32 mg/L 1 14 15 SF15008 EPA 310.2 06/15/15 08:54 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 4.2 mg/L 1 0.34 1.0 SF18004 SM 5310B-2000 06/18/15 12:09 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 5 of 14 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C505697-03 Received: 06/09/15 14:30 Matrix: Water Sampled:06/09/15 13:25 Work Order: C505697 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SF15026 EPA 6010C 06/18/15 13:51 ]DH Calcium [7440-70-2]^ 8180 B ug/L 1 39.0 100 SF15026 EPA 6010C 06/18/15 13:51 ]DH QB-Ol Copper[7440-50-8]^ 5.53 J ug/L 1 1.60 10.0 SF15026 EPA 6010C 06/18/15 13:51 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SF15026 EPA 6010C 06/18/15 13:51 ]DH Magnesium [7439-95-4]^ 2400 ug/L 1 29.0 100 SF15026 EPA 6010C 06/18/15 13:51 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SF15026 EPA 6010C 06/18/15 13:51 ]DH Potassium [7440-09-7]^ 2990 ug/L 1 150 500 SF15026 EPA 6010C 06/18/15 13:51 ]DH Sodium [7440-23-5]^ 8240 ug/L 1 400 500 SF15026 EPA 6010C 06/18/15 13:51 ]DH Zinc[7440-66-6]^ 16.7 ug/L 1 3.80 10.0 SF15026 EPA 6010C 06/18/15 13:51 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.072 J mg/L 1 0.045 0.10 SF17014 EPA 350.1 06/17/15 12:47 SHA Chloride [16887-00-6]^ 9.9 mg/L 1 2.2 5.0 SF11013 EPA 300.0 06/11/15 15:03 AJB Sulfate as SO4 [14808-79-8]^ 4.1 J mg/L 1 2.9 5.0 SF11013 EPA 300.0 06/11/15 15:03 AJB Total Alkalinity as CaCO3 [471-34-1]^ 30 mg/L 1 14 15 SF15008 EPA 310.2 06/15/15 08:57 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.9 mg/L 1 0.34 1.0 SF18004 SM 5310B-2000 06/18/15 12:09 RSA Description: NC-210 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C505697-04 Sa m pled: 06/09/ 15 12:05 Sampled By: Nancy Scott Received: 06/09/15 14:30 Work Order: C505697 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ 1.66 J ug/L 1 1.60 10.0 SF15026 EPA 6010C 06/18/15 13:54 ]DH Description: SR-1555 Dissolved Lab Sample ID:C505697-05 Received: 06/09/15 14:30 Matrix: Water Sampled:06/09/15 12:45 Work Order: C505697 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5F15026 EPA 6010C 06/18/15 13:56 JDH Description: NC-50 Dissolved Lab Sample ID:C505697-06 Received: 06/09/15 14:30 Matrix: Water Sampled:06/09/15 13:25 Work Order: C505697 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ 2.79 J ug/L 1 1.60 10.0 SF15026 EPA 6010C 06/18/15 13:59 JDH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 of 14 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SFZ5026 - EPA 3005A Blank (SF35026-BLK3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 12:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 42.7 ] 100 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Magnesium 29.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (SF15026-BSl) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 19.6 1.00 ug/L 20.0 98 80-120 Calcium 2180 B 100 ug/L 2000 109 80-120 Copper 193 10.0 ug/L 200 97 80-120 Lead 200 10.0 ug/L 200 100 80-120 Magnesium 2020 100 ug/L 2000 101 80-120 Nickel 198 10.0 ug/L 200 99 80-120 Potassium 10500 500 ug/L 10000 105 80-120 Sodium 9740 500 ug/L 10000 97 80-120 Zinc 199 10.0 ug/L 200 100 80-120 Matrix Spike (SF35026-MS3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:14 Source: C506306-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 19.2 1.00 ug/L 20.0 0.360 U 96 75-125 Calcium 21900 B 100 ug/L 2000 19800 105 75-125 Copper 197 10.0 ug/L 200 1.60 U 99 75-125 Lead 201 10.0 ug/L 200 3.10 U 101 75-125 Magnesium 7200 100 ug/L 2000 5090 105 75-125 Nickel 204 10.0 ug/L 200 5.00 100 75-125 Potassium 13400 500 ug/L 10000 3080 103 75-125 Sodium 42600 500 ug/L 10000 31200 114 75-125 Zinc 201 10.0 ug/L 200 3.80 U 101 75-125 Matrix Spike Dup (SF15026-MSD3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:17 Source: C506306-02 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result 19.3 21700 195 202 7000 201 13200 41600 200 Flaa B � 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result 0.360 U 19800 1.60 U 3.10 U 5090 5.00 3080 31200 3.80 U %REC 96 91 97 101 96 98 101 104 100 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 RPD 0.1 1 1 0.1 3 1 2 2 0.6 RPD Limit Notes 20 20 20 20 20 20 20 20 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 14 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SFZ5026 - EPA 3005A - Continued Post Spike (SF35026-PS3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:41 Source: C506306-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0190 0.00100 mg/L 0.0200 -0.000294 95 80-120 Calcium 21.3 B 0.100 mg/L 2.00 19.8 71 80-120 QM-08 Copper 0.196 0.0100 mg/L 0.200 0.00137 97 80-120 Lead 0.196 0.0100 mg/L 0.200 0.000683 98 80-120 Magnesium 6.66 0.100 mg/L 2.00 5.09 79 80-120 QM-08 Nickel 0.199 0.0100 mg/L 0.200 0.00500 97 80-120 Potassium 14.1 0.500 mg/L 10.0 3.08 110 80-120 Sodium 42.8 0.500 mg/L 10.0 31.2 117 80-120 Zinc 0.198 0.0100 mg/L 0.200 0.00284 98 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SFZ5026 - EPA 3005A Blank (SF15026-BLK2) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 12:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (SF15026-BSl) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 193 10.0 ug/L 200 97 80-120 Matrix Spike (5F35026-MS3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:14 Source: C506306-02 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 197 10.0 ug/L 200 1.60 U 99 75-125 Matrix Spike Dup (SF15026-MSD3) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:17 Source: C506306-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 195 10.0 ug/L 200 1.60 U 97 75-125 1 20 Post Spike (SF35026-P51) Prepared: 06/15/2015 11:10 Analyzed: 06/18/2015 13:41 Source: C506306-02 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 0.196 0.0100 mg/L 0.200 0.00137 97 80-120 Classical Chemistry Parameters - Quality Control Batch SF11013 - NO PREP Blank (SF33013-BLKl) Prepared: 06/11/2015 08:53 Analyzed: 06/11/2015 11:12 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 of 14 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SF11013 - NO PREP - Continaed �� www.encolabs.com LCS (SF11013-BSl) Prepared: 06/11/2015 08:53 Analyzed: 06/11/2015 12:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 53 5.0 mg/L 50.0 106 90-110 Sulfate as SO4 51 5.0 mg/L 50.0 101 90-110 Matrix Spike (SF31013-MSl) Prepared: 06/11/2015 08:53 Analyzed: 06/12/2015 00:36 Source: C506986-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 45 5.0 mg/L 20.0 23 112 90-110 QM-OS Sulfate as 504 57 5.0 mg/L 20.0 35 109 90-110 Matrix Spike (5F33013-MS2) Prepared: 06/11/2015 08:53 Analyzed: 06/11/2015 13:21 Source: C502650-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 41 5.0 mg/L 20.0 19 109 90-110 Sulfate as SO4 68 5.0 mg/L 20.0 46 112 90-110 QM-OS Matrix Spike Dup (SF13013-MSD3) Prepared: 06/11/2015 08:53 Analyzed: 06/11/2015 13:04 Source: C506986-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 45 5.0 mg/L 20.0 23 111 90-110 0.09 10 QM-OS Sulfate as SO4 57 5.0 mg/L 20.0 35 108 90-110 0.1 10 Batch SFZ5008 - NO PREP Blank (SF15008-BLKl) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 08:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (SF35008-BSl) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 08:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 97 15 mg/L 100 97 80-120 Matrix Spike (5F35008-MS3) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 08:54 Source: C506986-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 26 15 mg/L 37.8 14 U 68 80-120 QM-OS Matrix Spike Dup (SF15008-MSD3) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 08:56 Source: C506986-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 23 15 mg/L 37.8 14 U 61 80-120 11 25 QM-OS Batch SFZ5009 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 of 14 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SFZ5009 - NO PREP - Continaed �� www.encolabs.com Blank (SF35009-BLK3) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 09:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (SF35009-BSl) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 09:18 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 95 15 mg/L 100 95 80-120 Matrix Spike (SF35009-MSl) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 10:01 Source: C504935-01RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 25 15 mg/L 37.8 14 U 66 80-120 QM-OS Matrix Spike Dup (SF15009-MSD3) Prepared: 06/15/2015 07:48 Analyzed: 06/15/2015 10:03 Source: C504935-01RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 27 15 mg/L 37.8 14 U 72 80-120 9 25 QM-OS Batch SF17014 - NO PREP Blank (SF37014-BLKi) Prepared: 06/17/2015 10:24 Analyzed: 06/17/2015 12:28 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (SF17014-BSS) Prepared: 06/17/2015 10:24 Analyzed: 06/17/2015 12:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 1.1 0.10 mg/L 0.997 105 90-110 Matrix Spike (SF37014-MS3) Prepared: 06/17/2015 10:24 Analyzed: 06/17/2015 12:32 Source: C402500-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.41 0.10 mg/L 0.387 0.070 87 90-110 QM-OS Matrix Spike (5F37014-MS2) Prepared: 06/17/2015 10:24 Analyzed: 06/17/2015 12:40 Source: C502677-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.93 0.10 mg/L 0.387 0.62 79 90-110 QM-OS Matrix Spike Dup (SF17014-MSD3) Prepared: 06/17/2015 10:24 Analyzed: 06/17/2015 12:36 Source: C402500-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.33 0.10 mg/L 0387 0.070 66 90-110 22 10 QM-O5, QM-11 Classical Chemistry Parameters (Dissolved) - Quality Control Batch SFZ8004 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 of 14 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters (Dissolved) - Quality Control Batch SFZ8004 - NO PREP - Continaed Blank (SF38004-BLK3) Prepared: 06/18/2015 11:15 Analyzed: 06/18/2015 12:09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.34 U 1.0 mg/L LCS (SF38004-BSl) Prepared: 06/18/2015 11:15 Analyzed: 06/18/2015 12:09 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 37 1.0 mg/L 40.0 93 85-115 Matrix Spike (SF38004-MSl) Prepared: 06/18/2015 11:15 Analyzed: 06/18/2015 12:09 Source: A503583-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 49 1.0 mg/L 40.0 8.9 101 85-115 Matrix Spike Dup (SF18004-MSD3) Prepared: 06/18/2015 11:15 Analyzed: 06/18/2015 12:09 Source: A503583-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 49 1.0 mg/L 40.0 8.9 101 85-115 0.2 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 14 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QB-01 The method blank had a positive result for the analyte; however, the concentration in the method blank is less than 10% of the sample result, which minimizes the impact of the deviation. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-08 Post-digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 12 of 14 , l�.��Vl��l��/f�� MY��VY��I��P�• �IssO��a��Y ��I��• �• ��• •��i�� ron� ca�n�i �on or. asio �cec�si+�e Pars� Coun, sui�e r� i urr-a waod,�� incu�s�ae c� Qrlantip. FL 32&24 ,ladcsorn+ilfa. FL 32218-&fl69 Gdty. NG 27511 j44� 826-5314 Fax (407y 860-6945 (9i0+i? 296-:i�f17 Fax 1904) 296-6210 (8/9) a67-3090 F�c (S � 9i 467-3515 Ci�enl Name 1'rojeet Number ReqaeeaCed AneEyses i Q � Address { G. 1� t. �) �l.,�� G 1 fj , Pra�ect atne/Deae � �� tGi ='C (.i.� (,:w � ! f Bilimg I�nlo i' 19 ra 27 `i8 Fax ReporRing Conlact �13 �.17e2732 Nanc �cn�t RJeme. 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Accept hRetrfx GW-Groundwater 50-Soll OW-Qrmking Water SE-Sedirrtsn2 SW-SurfaceWi�lar WW�4Afaslewater A-Air O.OlTtier pdadaif in �rRertmnis) Preservtatbon: 1-!cu M-FiCV N-HNO3 S-W2S�4 NO-NabH O-btkrer Stle�aol in armments) Note . All samp4es submittwd ta �PJC4 Labs are on aocartle�rce with the terms s�nd �condGorzs tlisted or+ Ehe rmrecse ol Ihis lorm, unless ,p�r'tor wriM�n sgreemenls ercist , fJelalfime pt�tsaJTiane 9//� �� _ Unacceptabf� Sarnple Preservati�n V�ri�ication �f�C� Cary W4rk Orcier: C5�5897 Ciient: 7he Caten� G�oup {TW�15) Logged Irr Q9-Jun-�5 15:13 , CSi�5697-01 Coo�S �'ype M B 250m�.P+H?W�J3 [F] C 250mLP+H2SO4 p 250m�P+HNp3 �5a569�-02 Con4 Type B 250mLP+l-@NO3 [F) C I250mLP+H2SO4 D 250mLP+HE�Q3 �5Q5697-03 Cont Type B 250mLP+H6�03 [F] C 25{lmLP+H2SO4 C3 2�OmLP+H�l03 � R�a ent �am� lD 1 2 Praject EPro�ect #: ILoggeci By Re�uirement ~ In Contro! �� Adjusted <Z Y 1�J ! i Y! N 1 , f2 (j�1�JNA Y1 !NA <2 N/NA Y/ lI�A !'r�s {phf) p ge ced / �H Adjus�ed Requir�ment In Control <2 YlNIN YI�JI� <2 / N/ NA Y1 /NA <2 IR1 / N/ NA Y!,� ! NA s(pHJ I pH C�eck�d 1�� Adj�rsted irement In Controt <2 Y! N! Y/ N I <2 ,� 1 N I NA Y I�/ NA �2 � 1 N/ I�A Y I �lq� I PVA R�a ent Name ID 3 4 �� Swif4 Creek W�ter Quality [r�ane] .fohn C King a7ter e �rrtie I Reagermt �1sedJCornmerats Adiusted Aditi�sted w � Reagent t�s�edlCa�nrnents Reage�t l�sedlComm�nts F;�a �r�t hJame IC� 5 6 Page 14 of 14 Page 1 c =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, July 16, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C508411 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, July 1, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ � Of � 4 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC 210 Lab ID: C508411-03 Sampled: 07/Ol/15 09:10 Received: 07/Ol/15 14:36 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 07/29/15 07/07/15 09:00 07/07/15 19:53 EPA 310.2 07/15/15 07/02/15 12:24 07/02/15 14:10 EPA 350.1 07/29/15 07/08/15 09:12 07/08/15 11:09 EPA 6010C 12/28/15 07/02/15 OS:40 07/06/15 14:02 SM 5310B-2000 07/29/15 07/15/15 10:00 07/15/15 11:20 Client ID: SRS555 Lab ID: C508411-02 Sampled: 07/Ol/15 11:20 Received: 07/Ol/15 14:36 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 300.0 07/29/15 07/07/15 09:00 07/07/15 20:10 EPA 310.2 07/15/15 07/02/15 12:24 07/02/15 14:11 EPA 350.1 07/29/15 07/08/15 09:12 07/08/15 11:11 EPA 6010C 12/28/15 07/02/15 08:40 07/06/15 15:02 SM 5310B-2000 o�/z9/is o�/is/is io:oo o�/is/is ii:zo Client ID: NC 50 Lab ID: C508411-03 Sampled: 07/O3/15 13:15 Received: 07/Ol/15 14:36 Parameter Hold Date/Time(s) Pren Date/Time(s) Analvsis Date/Time(s) EPA 300.0 07/29/15 07/07/15 09:00 07/07/15 21:01 EPA 310.Z 07/15/15 07/02/15 12:24 07/OZ/15 14:11 EPA 350.1 07/29/15 07/08/15 09:12 07/08/15 11:14 EPA 6010C 12/28/15 07/02/15 08:40 07/06/15 15:05 SM 5310B-2000 07/29/15 07/15/15 10:00 07/15/15 11:20 Client ID: NC 210 Dissolved Lab ID: C508411-04 Sampled: 07/01/15 09:10 Received: 07/01/15 14:36 Parameter Hold Date/Time(s) Preu Date/Time(s) Analvsis Date/Time(s) EPA 6010C 12/28/15 07/02/15 08:40 07/06/15 15:08 Client ID: SR 1555 Dissolved Lab ID: C508411-OS Sampled: 07/Ol/15 11:20 Received: 07/Ol/15 14:36 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C 12/28/15 07/02/15 08:40 07/06/15 15:10 Client ID: NC 50 Dissolved Lab ID: C508411-06 Sampled: 07/Ol/15 13:15 Received: 07/O3/15 14:36 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C 12/28/15 07/02/15 08:40 07/06/15 15:13 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 2 Of � 4 �� www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: NC 210 Lab ID: C508411-OS Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 7000 39.0 100 ug/L EPA 6010C Chloride 8.5 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2420 B 29.0 100 ug/L EPA 6010C QB-01 Potassium - Total 2650 150 500 ug/L EPA 6010C Sodium - Total 7640 400 500 ug/L EPA 6010C Sulfate as SO4 3.9 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 23 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.7 0.34 1.0 mg/L SM 5310B-2000 Client ID: SR1555 Lab ID: C508411-02 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.073 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6890 39.0 100 ug/L EPA 6010C Chloride 8.5 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2350 B 29.0 100 ug/L EPA 6010C QB-01 Potassium - Total 2550 150 500 ug/L EPA 6010C Sodium - Total 7550 400 500 ug/L EPA 6010C Sulfate as 504 3.8 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 29 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.3 0.34 1.0 mg/L SM 5310B-2000 Client ID: NC 50 Lab ID: C508411-03 Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 7470 39.0 100 ug/L EPA 6010C Chloride 9.7 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2400 B 29.0 100 ug/L EPA 6010C QB-Ol Potassium - Total 2720 150 500 ug/L EPA 6010C Sodium - Total 7800 400 500 ug/L EPA 6010C Sulfate as SO4 4.1 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 27 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.9 0.34 1.0 mg/L SM 5310B-2000 Zinc - Total 4.09 J 3.80 10.0 ug/L EPA 6010C FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 3 Of � 4 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 210 Lab Sample ID:C508411-01 Received: 07/O1/15 14:36 Matrix: Water Sampled:07/O1/15 09:10 Work Order: C508411 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG02007 EPA 6010C 07/06/15 14:02 ]DH Calcium [7440-70-2]^ 7000 ug/L 1 39.0 100 SG02007 EPA 6010C 07/06/15 14:02 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG02007 EPA 6010C 07/06/15 14:02 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG02007 EPA 6010C 07/06/15 14:02 ]DH Magnesium [7439-95-4]^ 2420 B ug/L 1 29.0 100 SG02007 EPA 6010C 07/06/15 14:02 ]DH QB-01 Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG02007 EPA 6010C 07/06/15 14:02 ]DH Potassium [7440-09-7]^ 2650 ug/L 1 150 500 SG02007 EPA 6010C 07/06/15 14:02 ]DH Sodium [7440-23-5]^ 7640 ug/L 1 400 500 SG02007 EPA 6010C 07/06/15 14:02 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 SG02007 EPA 6010C 07/06/15 14:02 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SG08004 EPA 350.1 07/08/15 11:09 SHA Chloride [16887-00-6]^ 8.5 mg/L 1 2.2 5.0 SG07010 EPA 300.0 07/07/15 19:53 SHA Sulfate as SO4 [14808-79-8]^ 3.9 J mg/L 1 2.9 5.0 SG07010 EPA 300.0 07/07/15 19:53 SHA Total Alkalinity as CaCO3 [471-34-1]^ 23 mg/L 1 14 15 SG02027 EPA 310.2 07/02/15 14:10 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.7 mg/L 1 0.34 1.0 SG15018 SM 5310B-2000 07/15/15 11:20 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 4 Of � 4 �� www.encolabs.com ANALYTICAL RESULTS Description: SR1555 Lab Sample ID:C508411-02 Received: 07/O1/15 14:36 Matrix: Water Sampled:07/O1/15 11:20 Work Order: C508411 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG02007 EPA 6010C 07/06/15 15:02 ]DH Calcium [7440-70-2]^ 6890 ug/L 1 39.0 100 SG02007 EPA 6010C 07/06/15 15:02 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG02007 EPA 6010C 07/06/15 15:02 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG02007 EPA 6010C 07/06/15 15:02 ]DH Magnesium [7439-95-4]^ 2350 B ug/L 1 29.0 100 SG02007 EPA 6010C 07/06/15 15:02 ]DH QB-01 Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG02007 EPA 6010C 07/06/15 15:02 ]DH Potassium [7440-09-7]^ 2550 ug/L 1 150 500 SG02007 EPA 6010C 07/06/15 15:02 ]DH Sodium [7440-23-5]^ 7550 ug/L 1 400 500 SG02007 EPA 6010C 07/06/15 15:02 ]DH Zinc [7440-66-6]^ ND ug/L 1 3.80 10.0 SG02007 EPA 6010C 07/06/15 15:02 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.073 J mg/L 1 0.045 0.10 SG08004 EPA 350.1 07/08/15 11:11 SHA Chloride [16887-00-6]^ 8.5 mg/L 1 2.2 5.0 SG07010 EPA 300.0 07/07/15 20:10 SHA Sulfate as SO4 [14808-79-8]^ 3.8 J mg/L 1 2.9 5.0 SG07010 EPA 300.0 07/07/15 20:10 SHA Total Alkalinity as CaCO3 [471-34-1]^ 29 mg/L 1 14 15 SG02027 EPA 310.2 07/02/15 14:11 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.3 mg/L 1 0.34 1.0 SG15018 SM 5310B-2000 07/15/15 11:20 RSA FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 'rJ Of � 4 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 50 Lab Sample ID:C508411-03 Received: 07/O1/15 14:36 Matrix: Water Sampled:07/O1/15 13:15 Work Order: C508411 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG02007 EPA 6010C 07/06/15 15:05 ]DH Calcium [7440-70-2]^ 7470 ug/L 1 39.0 100 SG02007 EPA 6010C 07/06/15 15:05 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG02007 EPA 6010C 07/06/15 15:05 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG02007 EPA 6010C 07/06/15 15:05 ]DH Magnesium [7439-95-4]^ 2400 B ug/L 1 29.0 100 SG02007 EPA 6010C 07/06/15 15:05 ]DH QB-01 Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG02007 EPA 6010C 07/06/15 15:05 ]DH Potassium [7440-09-7]^ 2720 ug/L 1 150 500 SG02007 EPA 6010C 07/06/15 15:05 ]DH Sodium [7440-23-5]^ 7800 ug/L 1 400 500 SG02007 EPA 6010C 07/06/15 15:05 ]DH Zinc[7440-66-6]^ 4.09 J ug/L 1 3.80 10.0 SG02007 EPA 6010C 07/06/15 15:05 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SG08004 EPA 350.1 07/08/15 11:14 SHA Chloride [16887-00-6]^ 9.7 mg/L 1 2.2 5.0 SG07010 EPA 300.0 07/07/15 21:01 SHA Sulfate as SO4 [14808-79-8]^ 4.1 J mg/L 1 2.9 5.0 SG07010 EPA 300.0 07/07/15 21:01 SHA Total Alkalinity as CaCO3 [471-34-1]^ 27 mg/L 1 14 15 SG02027 EPA 310.2 07/02/15 14:11 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.9 mg/L 1 0.34 1.0 SG15018 SM 5310B-2000 07/15/15 11:20 RSA Description: NC 210 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C508411-04 Sampled:07/O1/15 09:10 Sampled By: Nancy Scott Received: 07/O 1/ 15 14:36 Work Order: C508411 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG02007 EPA 6010C 07/06/15 15:08 ]DH Description: SR 1555 Dissolved Lab Sample ID:C508411-05 Received: 07/O1/15 14:36 Matrix: Water Sampled:07/O1/15 11:20 Work Order: C508411 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5G02007 EPA 6010C 07/06/15 15:10 JDH Description: NC 50 Dissolved Lab Sample ID:C508411-06 Received: 07/O1/15 14:36 Matrix: Water Sampled:07/O1/15 13:15 Work Order: C508411 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certiFed analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 5G02007 EPA 6010C 07/06/15 15:13 JDH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ G Of � 4 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SG02007 - EPA 3005A Blank (SG02007-BLK3) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 13:45 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Magnesium 38.9 7 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (SG02007-BSl) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 13:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 21.2 1.00 ug/L 20.0 106 80-120 Calcium 2270 100 ug/L 2000 113 80-120 Copper 215 10.0 ug/L 200 108 80-120 Lead 212 10.0 ug/L 200 106 80-120 Magnesium 2120 B 100 ug/L 2000 106 80-120 Nickel 213 10.0 ug/L 200 106 80-120 Potassium 11100 500 ug/L 10000 111 80-120 Sodium 10100 500 ug/L 10000 101 80-120 Zinc 212 10.0 ug/L 200 106 80-120 Matrix Spike (SG02007-MS3) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:04 Source: C508411-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.4 1.00 ug/L 20.0 0.360 U 102 75-125 Calcium 9000 100 ug/L 2000 7000 100 75-125 Copper 210 10.0 ug/L 200 1.60 U 105 75-125 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 Magnesium 4490 B 100 ug/L 2000 2420 103 75-125 Nickel 205 10.0 ug/L 200 1.80 U 103 75-125 Potassium 13300 500 ug/L 10000 2650 107 75-125 Sodium 18100 500 ug/L 10000 7640 105 75-125 Zinc 206 10.0 ug/L 200 3.80 U 103 75-125 Matrix Spike Dup (SG02007-MSD3) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:07 Source: C508411-01 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc FINAL Spike Source %REC Result F� � Units Level Result %REC Limits RPD 20.5 1.00 ug/L 20.0 0.360 U 102 75-125 0.3 8840 100 ug/L 2000 7000 92 75-125 2 210 10.0 ug/L 200 1.60 U 105 75-125 0.2 206 10.0 ug/L 200 3.10 U 103 75-125 1 4430 B 100 ug/L 2000 2420 100 75-125 1 205 10.0 ug/L 200 1.80 U 102 75-125 0.1 13000 500 ug/L 10000 2650 103 75-125 2 18100 500 ug/L 10000 7640 104 75-125 0.3 205 10.0 ug/L 200 3.80 U 102 75-125 0.4 This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD Limit Notes 20 20 20 20 20 20 20 20 20 Page 7 of 14 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SG02007 - EPA 3005A - Continaed Post Spike (SG02007-PS3) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:10 Source: C508411-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0193 0.00100 mg/L 0.0200 -6.72E-5 97 80-120 Calcium 8.80 0.100 mg/L 2.00 7.00 90 80-120 Copper 0.199 0.0100 mg/L 0.200 0.000951 99 80-120 Lead 0.196 0.0100 mg/L 0.200 0.00116 98 80-120 Magnesium 4.29 B 0.100 mg/L 2.00 2.42 94 80-120 Nickel 0.195 0.0100 mg/L 0.200 -0.000109 97 80-120 Potassium 12.7 0.500 mg/L 10.0 2.65 100 80-120 Sodium 17.3 0.500 mg/L 10.0 7.64 97 80-120 Zinc 0.195 0.0100 mg/L 0.200 0.00142 97 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SG01007 - EPA 3005A Blank (SG02007-BLK2) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 13:49 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (SG02007-BSl) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 13:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 215 10.0 ug/L 200 108 80-120 Matrix Spike (5G02007-MSS) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:04 Source: C508411-03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 210 10.0 ug/L 200 1.60 U 105 75-125 Matrix Spike Dup (SG02007-MSDl) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:07 Source: C508411-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 210 10.0 ug/L 200 1.60 U 105 75-125 0.2 20 Post Spike (SG02007-PSl) Prepared: 07/02/2015 08:41 Analyzed: 07/06/2015 14:10 Source: C508411-01 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 0.199 0.0100 mg/L 0.200 0.000951 99 80-120 Classical Chemistry Parameters - Quality Control Batch SG02027 - NO PREP Blank (SG02027-BLK3) Prepared: 07/02/2015 12:24 Analyzed: 07/02/2015 13:57 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ H Of � 4 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SG02027 - NO PREP - ContinUed LCS (SG02027-BS3) Prepared: 07/02/2015 12:24 Analyzed: 07/02/2015 13:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 98 15 mg/L 100 98 80-120 Matrix Spike (5G02027-MSl) Prepared: 07/02/2015 12:24 Analyzed: 07/02/2015 13:58 Source: C504934-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L 37.8 14 U 80-120 QM-OS Matrix Spike Dup (SG02027-MSDl) Prepared: 07/02/2015 12:24 Analyzed: 07/02/2015 14:00 Source: C504934-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L 37.8 14 U 80-120 25 QM-OS Batch SG07010 - NO PREP Blank (SG07030-BLK3) Prepared: 07/07/2015 09:00 Analyzed: 07/07/2015 10:32 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2.2 U 5.0 mg/L Sulfate as SO4 2.9 U 5.0 mg/L LCS (SG07010-BSl) Prepared: 07/07/2015 09:00 Analyzed: 07/07/2015 10:49 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 54 5.0 mg/L 50.0 109 90-110 Sulfate as SO4 52 5.0 mg/L 50.0 104 90-110 Matrix Spike (5G07030-MSl) Prepared: 07/07/2015 09:00 Analyzed: 07/07/2015 11:06 Source: C502337-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 25 5.0 mg/L 20.0 5.5 97 90-110 Sulfate as SO4 33 5.0 mg/L 20.0 14 99 90-110 Matrix Spike (SG07030-MS3) Prepared: 07/07/2015 09:00 Analyzed: 07/07/2015 12:31 Source: C502337-02RE3 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Chloride 180 20 mg/L 80.0 92 113 90-110 QM-OS Sulfate as SO4 220 20 mg/L 80.0 130 112 90-110 QM-OS Matrix Spike Dup (SG07010-MSDl) Prepared: 07/07/2015 09:00 Analyzed: 07/07/2015 11:23 Source: C502337-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 26 5.0 mg/L 20.0 5.5 101 90-110 3 10 Sulfate as 504 34 5.0 mg/L 20.0 14 103 90-110 2 10 Batch SG08004 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 9 Of � 4 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SG08004 - NO PREP - ContinUed �� www.encolabs.com Blank (SG08004-BLK3) Prepared: 07/08/2015 09:12 Analyzed: 07/08/2015 10:18 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (SG08004-BSl) Prepared: 07/08/2015 09:12 Analyzed: 07/08/2015 10:20 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 1.0 0.10 mg/L 0.997 104 90-110 Matrix Spike (SG08004-MSS) Prepared: 07/08/2015 09:12 Analyzed: 07/08/2015 10:22 Source: C505857-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 54 5.0 mg/L 19.9 35 91 90-110 Matrix Spike (SG08004-MS2) Prepared: 07/08/2015 09:12 Analyzed: 07/08/2015 10:30 Source: C505857-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 11 1.0 mg/L 3.98 7.1 90 90-110 Matrix Spike Dup (SG08004-MSD3) Prepared: 07/08/2015 09:12 Analyzed: 07/08/2015 10:26 Source: C505857-03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 53 5.0 mg/L 19.9 35 87 90-110 2 10 QM-OS Classical Chemistry Parameters (Dissolved) - Quality Control Batch SGI5018 - NO PREP Blank (SG15018-BLK3) Prepared: 07/15/2015 10:00 Analyzed: 07/15/2015 11:20 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.34 U 1.0 mg/L LCS (SG15018-BSl) Prepared: 07/15/2015 10:00 Analyzed: 07/15/2015 11:20 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 39 1.0 mg/L 40.0 98 85-115 LCS Dup (SG15018-BSDi) Prepared: 07/15/2015 10:00 Analyzed: 07/15/2015 11:20 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 44 1.0 mg/L 40.0 111 85-115 12 21 Matrix Spike (5G35018-MSl) Prepared: 07/15/2015 10:00 Analyzed: 07/15/2015 11:20 Source: A504277-01 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 46 1.0 mg/L 40.0 5.4 103 85-115 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Pag@ � O Of � 4 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters (Dissolved) - Quality Control Batch SGI5018 - NO PREP - ContinUed Matrix Spike Dup (SG15018-MSD3) Prepared: 07/15/2015 10:00 Analyzed: 07/15/2015 11:20 Source: A504277-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 44 1.0 mg/L 40.0 5.4 97 85-115 5 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Pag@ � � Of � 4 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QB-01 The method blank had a positive result for the analyte; however, the concentration in the method blank is less than 10% of the sample result, which minimizes the impact of the deviation. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Pag@ � 2 Of � 4 �� '�� +r n�v�Eni�� rsa. vvr�vr.e rwrn� �v�a a.�uv� �^� v� ��.v v� �r�n� ..r� vvv r vu ��„vvi �v w vv vv.cn�vrou�.a.v� � � 1077� Certral Porl. Dr. 481Q Exacu�live Park Court, 9Ui6e 1 I1 162-A V�rwdw�inds Induslrial Ci �� ,v�� Ooianda. FL 32824 ,Jacksomnlle. FL 32216-6069 Gary„ NC 27511 f41i7D 8�fi-a�4:i Fex (�47� 850-fi9A5 fe3041 296-3607 Fttx f�C1Aj 256•6214 (91�) d67-30gU Fex i'd181 •�r. �,`, �. �. �i3C�C' Of � � Cfient Name ProJpct Numbe� Re�uested yaes RE(�UQSi�d �Ufi iat'uu� i � .fl i � � � �f(1'1�S M tV � hddress PropeG Na afDesc — — -- - y,� � � r�r� �,�-,�� , ,_ - � Ob r. Ju.t.i� (Q I �w� �' �� =m � cs� ��y � �_ _ .. � CAryiSTIZJp PQ s! 61111otig 9nto I� � �[j � 1tis�o�-r� -� N � �� 7 �' I s `' � -- - J � � � � � Standarel �ol Faz Reporting CorNact � �' 3Z.13�� ° � - - t.l � � Expeditec� S�p4er(sS Naftag. AHd9cat�on �PnnS) Bil.ling Comtacl . Q Pi `�, f � � �. .:� c:.� t� t`�' � � �a... � Due I /_ Sampler(sj Srgpa ur � Site loplion / Tune 2one � � �� 1j � J Lab Workorder � � � � I _ `� l� ak � � 4 Presenretfon QSee Codesy (Camtaine as necessary) Cakl�ectic+n Matnx Total g a1 3tem al S�mp�le Id (Field IdernEtt�cat�crrr) Gollec4ion p�ta oime Carrrya r Gram fsee codss} Contai.i�ie�rs I Sr7R1pIE �OfTlll'IBR�iS o x x � � X S2 _ ! 1_2U � - — —' -- � � . � � � �� - - �� , I � • . I > I <-- Total w of ConEa�ners 'SampCeMitPre�ared$y Daler'ti�mts Reli+�r�u+shod. ��---. Dale.�T�ni�t: Receava�0�� — Dafc�� i�e , �/ �� / � � .� WO �r" �� ! !� / ', l CommenPs+'Sp�cial RepvAmg F7equiremenps Re6inquishec7 8y Dal�me Received y � �ale�ma � Reti��quished By �at�me Fieceivesi By D�me Coole+ n`s &'�amps on f�eceipt C ndHion Upan Receipt �, �C L , Accepta4le l�n�cceptable� Metrlx : GW-Groun�rSEwaSer SO-Sorl UW��rr�kirvg Weter sE-Sed�menl SWSurlaca Waler WW•1N�Pewaaer k dur O-Qther jdatail rn cummenls) Pnrsew�tlon: �•9ce H �iCt N-11MQS S-li2S9J W�-lJeueaVi O•[�I?ror r�etail In camanerits) 1Jate : All samples a�uhmittee! lo EN�CO La@rs aee� in accordance wilh Ifu�� terms and co�ndi�Ebns listed ues ahe reverse o9 thcs faem, unlsss pr�or wnnen agraernem�ts meist r Saim�le Pr�s�erva#�a►n Veri�icat�or� �NCO� ��ry �� 1Nark C?rder: C50841� Pr�aj�ct: Swift Creek Water Qualityr Cli��t: The Ga�t�na ��o�p (TH015) PRoject #� [none� Lagged In: 01-J�uf-�5 15:06 . Logged By: Jot�n C King CSQ8411-01 Cont Zype Pt�s (PH) pM Checked I�}� Adj�sted date�me I�eagent Use�ilComments • Requ�rememt I�n ControC Adjust�d � 250rr�L��H2Sp4 <2 �� J fV I�JA X I 1� I�IA Q 25pml�P+�Ng� <2 ]Y�J N/ I�A Y 1(6� I�JA C508411-02 Cont Type C 250mLP+H2S�4 D 25�mLP+HNQ3 C508411-U3 Cont Type C 2�717mLP+H2SC)4 � 25QmLP+HN(]3 �5fl8411-U4 CQnt Type A 25bmLP+HNO3 [Fj C5�18411-�15 Cont rype A 25amLP+HN�73 [F] �50$411-06 Corrt Type A 250mLP+HN�3 [F] x S(P�? PH C:neckea I p� Adjusted iTemer�t I� Contro�� <2 '�JN/f�A YIL�IlNA <2 �CS I N 1 EVA Y/rAI I NA irement r In ControU �H AdjusZed €Z Il,Y/�lr NAIYI /NA <2 / N 1 NA Y l� 1 NA s (pH) pH Checked ! �� Adjusd�d ieem�;nt In Contrad <2 YINf�R XIN/�l�1 Pres (pH) R�quiT�m@rrt <2 s (pH). ireme�t <2 I� Contra�1 ��'�d�usted YIN/f�A Y/�JlP�"A, In Cor�tro� P� AdjusSed Y I N f p J� X/� J! f 4 A Ad�us4ed Ad �e�g��t Used/�orr�mer�ts Reager�t l�sedl�Ge�rr�merats Reager�t l�sedlComments R�ag��rt Used/Comrnents Reagent UsedlCornments Rea ent Name ID Rea ent fVarxie ID Re� er�t Name ID { 1 � - — � � 4 6 Page 14 of 14 �� =��4 PCCAFpx� �� `r TNE ,�� i eexer�t�e. 'Tirne�y. � �Spar�siz��. �xrx�a�� izre. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, July 23, 2015 The Catena Group (TH015) Attn: Nancy Scott 410-B Millstone Drive Hillsborough, NC 27278 RE: Laboratory Results for Project Number: [none], Project Name/Desc: Swift Creek Water Quality ENCO Workorder(s): C508904 Dear Nancy Scott, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, July 10, 2015. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Bill Scott Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ � Of � 3 �� www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: NC 210 Lab ID: C508904-01 Sampled: 07/10/15 09:05 Received: 07/10/15 11:10 Parameter Hold Date/Time(, Prep Date/Time(, Analysis Date/Time(s� EPA 300.0 08/07/15 07/13/15 09:00 07/14/15 02:47 EPA 310.2 07/24/15 07/13/15 11:10 07/13/15 13:44 EPA 350.1 08/07/15 07/15/15 07:37 07/15/15 10:56 EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 10:44 SM 5310B-2000 08/07/15 07/21/15 13:00 07/21/15 15:19 Client ID: NC 210 Dissolved Lab ID: C508904-02 Sampled: 07/10/15 09:05 Received: 07/10/15 11:10 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 10:46 Client ID: SR 1555 Lab ID: C508904-03 Sampled: 07/10/15 09:45 Received: 07/10/15 11:10 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 08/07/15 07/13/15 09:00 07/14/15 03:04 EPA 310.2 07/24/15 07/13/15 11:10 07/13/15 13:44 EPA 350.1 08/07/15 07/15/15 07:37 07/15/15 10:58 EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 10:49 SM 5310B-2000 08/07/15 07/21/15 13:00 07/Z1/15 15:19 Client ID: SR 1555 Dissolved Lab ID: C508904-04 Sampled: 07/10/15 09:45 Received: 07/10/15 11:10 Parameter Hold Date/Time(s) Preo Date/Time(s) Analvsis Date/Time(s) EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 11:00 Client ID: NC-50 Lab ID: C508904-OS Sampled: 07/30/15 30:15 Received: 07/10/15 11:10 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 300.0 08/07/15 07/13/15 09:00 07/14/15 03:22 EPA 310.2 07/24/15 07/13/15 11:10 07/13/15 13:45 EPA 350.1 08/07/15 07/15/15 07:37 07/15/15 11:00 EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 11:03 SM 5310B-2000 08/07/15 07/21/15 13:00 07/21/15 15:19 Client ID: NC-50 Dissolved Lab ID: C508904-06 Sampled: 07/10/15 10:15 Received: 07/10/15 11:10 Parameter Hold Date/Time(sl Preu Date/Time(sl Analvsis Date/Time(s) EPA 6010C O1/06/16 07/13/15 14:19 07/17/15 11:06 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 2 Of � 3 �� www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: NC 210 Lab ID: C508904-OS Anal e Results Flaa MDL Q Units Method Notes Calcium - Total 5590 39.0 100 ug/L EPA 6010C Chloride 7.0 2.2 5.0 mg/L EPA 300.0 Copper- Total 1.61 J 1.60 10.0 ug/L EPA 6010C Magnesium - Total 2150 29.0 100 ug/L EPA 6010C Potassium - Total 2500 150 500 ug/L EPA 6010C Sodium - Total 6620 400 500 ug/L EPA 6010C Sulfate as SO4 3.7 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 22 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.3 0.34 1.0 mg/L SM 5310B-2000 Client ID: SR 1555 Lab ID: C508904-03 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.060 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 6020 39.0 100 ug/L EPA 6010C Chloride 8.0 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2130 29.0 100 ug/L EPA 6010C Potassium - Total 2400 150 500 ug/L EPA 6010C Sodium - Total 7340 400 500 ug/L EPA 6010C Sulfate as 504 3.8 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 22 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.2 0.34 1.0 mg/L SM 5310B-2000 Client ID: NC-50 Lab ID: C508904-05 Anal e Results Flaa MDL Q Units Method Notes Ammonia as N 0.069 J 0.045 0.10 mg/L EPA 350.1 Calcium - Total 7370 39.0 100 ug/L EPA 6010C Chloride 9.3 2.2 5.0 mg/L EPA 300.0 Magnesium - Total 2370 29.0 100 ug/L EPA 6010C Potassium - Total 2480 150 500 ug/L EPA 6010C Sodium - Total 7760 400 500 ug/L EPA 6010C Sulfate as SO4 4.0 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 23 14 15 mg/L EPA 310.2 Total Organic Carbon - Dissolved 5.9 0.34 1.0 mg/L SM 5310B-2000 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 3 Of � 3 �� www.encolabs.com ANALYTICAL RESULTS Description: NC 210 Lab Sample ID:C508904-01 Received: 07/10/15 11:10 Matrix: Water Sampled:07/10/15 09:05 Work Order: C508904 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG13040 EPA 6010C 07/17/15 10:44 ]DH Calcium [7440-70-2]^ 5590 ug/L 1 39.0 100 SG13040 EPA 6010C 07/17/15 10:44 ]DH Copper[7440-50-8]^ 1.61 J ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 10:44 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG13040 EPA 6010C 07/17/15 10:44 ]DH Magnesium [7439-95-4]^ 2150 ug/L 1 29.0 100 SG13040 EPA 6010C 07/17/15 10:44 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG13040 EPA 6010C 07/17/15 10:44 ]DH Potassium [7440-09-7]^ 2500 ug/L 1 150 500 SG13040 EPA 6010C 07/17/15 10:44 ]DH Sodium [7440-23-5]^ 6620 ug/L 1 400 500 SG13040 EPA 6010C 07/17/15 10:44 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SG13040 EPA 6010C 07/17/15 10:44 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ ND mg/L 1 0.045 0.10 SG15003 EPA 350.1 07/15/15 10:56 SHA Chloride [16887-00-6]^ 7.0 mg/L 1 2.2 5.0 SG13017 EPA 300.0 07/14/15 02:47 SHA Sulfate as SO4 [14808-79-8]^ 3.7 J mg/L 1 2.9 5.0 SG13017 EPA 300.0 07/14/15 02:47 SHA Total Alkalinity as CaCO3 [471-34-1]^ 22 mg/L 1 14 15 SG13030 EPA 310.2 07/13/15 13:44 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.3 mg/L 1 0.34 1.0 SG21008 SM 5310B-2000 07/21/15 15:19 RSA Description: NC 210 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C508904-02 Sampled:07/10/15 09:05 Sampled By: Nancy Scott Received: 07/ 10/ 15 11:10 Work Order: C508904 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 10:46 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 4 Of � 3 �� www.encolabs.com ANALYTICAL RESULTS Description: SR 1555 Lab Sample ID:C508904-03 Received: 07/10/15 11:10 Matrix: Water Sampled:07/10/15 09:45 Work Order: C508904 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG13040 EPA 6010C 07/17/15 10:49 ]DH Calcium [7440-70-2]^ 6020 ug/L 1 39.0 100 SG13040 EPA 6010C 07/17/15 10:49 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 10:49 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG13040 EPA 6010C 07/17/15 10:49 ]DH Magnesium [7439-95-4]^ 2130 ug/L 1 29.0 100 SG13040 EPA 6010C 07/17/15 10:49 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG13040 EPA 6010C 07/17/15 10:49 ]DH Potassium [7440-09-7]^ 2400 ug/L 1 150 500 SG13040 EPA 6010C 07/17/15 10:49 ]DH Sodium [7440-23-5]^ 7340 ug/L 1 400 500 SG13040 EPA 6010C 07/17/15 10:49 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SG13040 EPA 6010C 07/17/15 10:49 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.060 J mg/L 1 0.045 0.10 SG15003 EPA 350.1 07/15/15 10:58 SHA Chloride [16887-00-6]^ 8.0 mg/L 1 2.2 5.0 SG13017 EPA 300.0 07/14/15 03:04 SHA Sulfate as SO4 [14808-79-8]^ 3.8 J mg/L 1 2.9 5.0 SG13017 EPA 300.0 07/14/15 03:04 SHA Total Alkalinity as CaCO3 [471-34-1]^ 22 mg/L 1 14 15 SG13030 EPA 310.2 07/13/15 13:44 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.2 mg/L 1 0.34 1.0 SG21008 SM 5310B-2000 07/21/15 15:19 RSA Description: SR 1555 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C508904-04 Sampled:07/10/15 09:45 Sampled By: Nancy Scott Received: 07/ 10/ 15 11:10 Work Order: C508904 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 11:00 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 'rJ Of � 3 �� www.encolabs.com ANALYTICAL RESULTS Description: NC-50 Lab Sample ID:C508904-05 Received: 07/10/15 11:10 Matrix: Water Sampled:07/10/15 10:15 Work Order: C508904 Project: Swift Creek Water Quality Sampled By: Nancy Scott Metals (total recoverable) by EPA 6000/7000 Series Methods ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed By Notes Cadmium [7440-43-9]^ ND ug/L 1 0.360 1.00 SG13040 EPA 6010C 07/17/15 11:03 ]DH Calcium [7440-70-2]^ 7370 ug/L 1 39.0 100 SG13040 EPA 6010C 07/17/15 11:03 ]DH Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 11:03 ]DH Lead [7439-92-1]^ ND ug/L 1 3.10 10.0 SG13040 EPA 6010C 07/17/15 11:03 ]DH Magnesium [7439-95-4]^ 2370 ug/L 1 29.0 100 SG13040 EPA 6010C 07/17/15 11:03 ]DH Nickel[7440-02-0]^ ND ug/L 1 1.80 10.0 SG13040 EPA 6010C 07/17/15 11:03 ]DH Potassium [7440-09-7]^ 2480 ug/L 1 150 500 SG13040 EPA 6010C 07/17/15 11:03 ]DH Sodium [7440-23-5]^ 7760 ug/L 1 400 500 SG13040 EPA 6010C 07/17/15 11:03 ]DH Zinc[7440-66-6]^ ND ug/L 1 3.80 10.0 SG13040 EPA 6010C 07/17/15 11:03 ]DH Classical Chemistry Parameters ^- ENCO Cary ceKified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Ammonia as N[7664-41-7]^ 0.069 J mg/L 1 0.045 0.10 SG15003 EPA 350.1 07/15/15 11:00 SHA Chloride [16887-00-6]^ 9.3 mg/L 1 2.2 5.0 SG13017 EPA 300.0 07/14/15 03:22 SHA Sulfate as SO4 [14808-79-8]^ 4.0 J mg/L 1 2.9 5.0 SG13017 EPA 300.0 07/14/15 03:22 SHA Total Alkalinity as CaCO3 [471-34-1]^ 23 mg/L 1 14 15 SG13030 EPA 310.2 07/13/15 13:45 SHA Classical Chemistry Parameters (Dissolved) ^- ENCO Orlando ceKified analyte [NC 424J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Total Organic Carbon^ 5.9 mg/L 1 0.34 1.0 SG21008 SM 5310B-2000 07/21/15 15:19 RSA Description: NC-50 Dissolved Matrix: Water Project: Swift Creek Water Quality Lab Sample ID: C508904-06 Sampled: 07/10/15 10:15 Sampled By: Nancy Scott Received: 07/ 10/ 15 11:10 Work Order: C508904 IMetals (Dissolved) by EPA 6000/7000 Series Methods ^- ENCO Cary certified analyte [NC 591J Analvte fCAS Numberl Results Flaa Units DF MDL P L Batch Method Analvzed � Notes Copper[7440-50-8]^ ND ug/L 1 1.60 10.0 SG13040 EPA 6010C 07/17/15 11:06 ]DH FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ G Of � 3 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SG13040 - EPA 3005A Blank (SG13040-BLK3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 09:47 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.360 U 1.00 ug/L Calcium 39.0 U 100 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Magnesium 29.0 U 100 ug/L Nickel 1.80 U 10.0 ug/L Potassium 150 U 500 ug/L Sodium 400 U 500 ug/L Zinc 3.80 U 10.0 ug/L LCS (SG33040-BS3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Calcium 2150 100 ug/L 2000 107 80-120 Copper 194 10.0 ug/L 200 97 80-120 Lead 206 10.0 ug/L 200 103 80-120 Magnesium 2030 100 ug/L 2000 102 80-120 Nickel 201 10.0 ug/L 200 100 80-120 Potassium 10200 500 ug/L 10000 102 80-120 Sodium 10200 500 ug/L 10000 102 80-120 Zinc 200 10.0 ug/L 200 100 80-120 Matrix Spike (SG33040-MS3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:00 Source: C508500-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 Calcium 23800 100 ug/L 2000 22300 76 75-125 Copper 206 10.0 ug/L 200 1.60 U 103 75-125 Lead 210 10.0 ug/L 200 3.10 U 105 75-125 Magnesium 7620 100 ug/L 2000 5640 99 75-125 Nickel 208 10.0 ug/L 200 1.80 U 104 75-125 Potassium 13800 500 ug/L 10000 3240 105 75-125 Sodium 16800 500 ug/L 10000 6330 105 75-125 Zinc 224 10.0 ug/L 200 14.3 105 75-125 Matrix Spike Dup (SG33040-MSD3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:03 Source: C508500-01 Analvte Cadmium Calcium Copper Lead Magnesium Nickel Potassium Sodium Zinc Result Flaa 19.3 23400 196 207 7420 200 13400 16500 216 � 1.00 100 10.0 10.0 100 10.0 500 500 10.0 Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 2000 200 200 2000 200 10000 10000 200 Source Result 0.360 U 22300 1.60 U 3.10 U 5640 1.80 U 3240 6330 14.3 %REC 97 56 98 103 89 100 102 102 101 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 RPD 4 2 5 2 3 4 3 2 4 RPD Limit 20 20 20 20 20 20 20 20 20 Notes QM-OS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ % Of � 3 �� www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch SG13040 - EPA 3005A - Continaed Post Spike (SG13040-PS3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:06 Source: C508500-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cadmium 0.0194 0.00100 mg/L 0.0200 -0.000121 97 80-120 Calcium 23.1 0.100 mg/L 2.00 22.3 41 80-120 QM-08 Copper 0.198 0.0100 mg/L 0.200 0.000135 99 80-120 Lead 0.201 0.0100 mg/L 0.200 -0.00206 101 80-120 Magnesium 7.21 0.100 mg/L 2.00 5.64 78 80-120 QM-08 Nickel 0.202 0.0100 mg/L 0.200 -0.000361 101 80-120 Potassium 13.0 0.500 mg/L 10.0 3.24 98 80-120 Sodium 15.9 0.500 mg/L 10.0 6.33 96 80-120 Zinc 0.221 0.0100 mg/L 0.200 0.0143 103 80-120 Metals (Dissolved) by EPA 6000/7000 Series Methods - Quality Control Batch SG13040 - EPA 3005A Blank (SG13040-BLK2) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 09:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 1.60 U 10.0 ug/L LCS (SG33040-BS3) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 194 10.0 ug/L 200 97 80-120 Matrix Spike (5G33040-MSl) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:00 Source: C508500-03 Spike Source %REC RPD Analyte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Copper 206 10.0 ug/L 200 1.60 U 103 75-125 Matrix Spike Dup (SG13040-MSDl) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:03 Source: C508500-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 196 10.0 ug/L 200 1.60 U 98 75-125 5 20 Post Spike (SG13040-PSl) Prepared: 07/13/2015 14:19 Analyzed: 07/17/2015 10:06 Source: C508500-03 Spike Source %REC RPD Analvte Result F� � Units Level Result %REC Limits RPD Limit Notes Copper 0.198 0.0100 mg/L 0.200 0.000135 99 80-120 Classical Chemistry Parameters - Quality Control Batch SG13017 - NO PREP Blank (SG13017-BLK3) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 14:32 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Chloride Sulfate as SO4 FINAL 2.2 U 5.0 mg/L 2.9 U 5.0 mg/L This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ H Of � 3 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch SG13017 - NO PREP - ContinUed �� www.encolabs.com LCS (SG13017-BS3) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 15:27 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 54 5.0 mg/L 50.0 108 90-110 Sulfate as SO4 52 5.0 mg/L 50.0 104 90-110 Matrix Spike (SG13017-MSS) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 15:44 Source: C508205-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 25 5.0 mg/L 20.0 5.4 100 90-110 Sulfate as 504 29 5.0 mg/L 20.0 9.5 97 90-110 Matrix Spike (5G33017-MS2) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 16:35 Source: C508205-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Chloride 77 5.0 mg/L 20.0 53 118 90-110 QM-OS Matrix Spike (SG13017-MS3) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 17:09 Source: C508205-02RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfate as SO4 320 50 mg/L 200 120 100 90-110 Matrix Spike Dup (SG33017-MSD3) Prepared: 07/13/2015 09:00 Analyzed: 07/13/2015 16:01 Source: C508205-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 26 5.0 mg/L 20.0 5.4 101 90-110 0.8 10 Sulfate as SO4 29 5.0 mg/L 20.0 9.5 98 90-110 0.6 10 Batch SG13030 - NO PREP Blank (SG13030-BLKS) Prepared: 07/13/2015 11:10 Analyzed: 07/13/2015 13:20 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L LCS (SG13030-BS3) Prepared: 07/13/2015 11:10 Analyzed: 07/13/2015 13:21 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 104 80-120 Matrix Spike (5G33030-MSl) Prepared: 07/13/2015 11:10 Analyzed: 07/13/2015 13:22 Source: C508205-03 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 18 15 mg/L 37.8 14 U 46 80-120 QM-OS Matrix Spike Dup (SG13030-MSD3) Prepared: 07/13/2015 11:10 Analyzed: 07/13/2015 13:24 Source: C508205-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14 U 15 mg/L 37.8 14 U 80-120 25 QM-OS Batch SGI5003 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. P8g@ 9 Of � 3 �� www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Blank (SG15003-BLK3) Prepared: 07/15/2015 07:37 Analyzed: 07/15/2015 10:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.045 U 0.10 mg/L LCS (SG15003-B51) Prepared: 07/15/2015 07:37 Analyzed: 07/15/2015 10:08 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 1.0 0.10 mg/L 0.997 102 90-110 Matrix Spike (5G35003-MSl) Prepared: 07/15/2015 07:37 Analyzed: 07/15/2015 10:10 Source: C508051-02 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.37 0.10 mg/L 0.387 0.045 U 95 90-110 Matrix Spike (SG35003-MS2) Prepared: 07/15/2015 07:37 Analyzed: 07/15/2015 10:23 Source: C508123-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.77 0.10 mg/L 0387 0.42 91 90-110 Matrix Spike Dup (SG35003-MSD3) Prepared: 07/15/2015 07:37 Analyzed: 07/15/2015 10:15 Source: C508051-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ammonia as N 0.37 0.10 mg/L 0.387 0.045 U 95 90-110 0.05 10 Classical Chemistry Parameters (Dissolved) - Quality Control Batch SG21008 - NO PREP Blank (SG23008-BLK3) Prepared: 07/21/2015 13:00 Analyzed: 07/21/2015 15:19 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.34 U 1.0 mg/L LCS (5G21008-BSl) Prepared: 07/21/2015 13:00 Analyzed: 07/21/2015 15:19 Spike Source %REC RPD Analvte Result Flaq PQL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 44 1.0 mg/L 40.0 111 85-115 Matrix Spike (SG23008-MSl) Prepared: 07/21/2015 13:00 Analyzed: 07/21/2015 15:19 Source: A504272-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 45 1.0 mg/L 40.0 1.0 109 85-115 Matrix Spike Dup (SG21008-MSD3) Prepared: 07/21/2015 13:00 Analyzed: 07/21/2015 15:19 Source: A504272-01 Spike Source %REC RPD Analvte Result F� Q Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 42 1.0 mg/L 40.0 1.0 103 85-115 6 21 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Pag@ � O Of � 3 �� www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. ND The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a"tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. QM-05 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable. QM-OS Post-digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. 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H- . W',.•�� S -�-60 �J6 :,ar'�I O �'.ir��:;; �I-��in ri.-:, �,r�� I�i,.�,� �,AI -.;_rn� ...i��.��,�J�-4 i,.. r-�,{(�.i i I. r.:�i•� �i _� �� .r: �,,,.., �, - � i � �vi I � - .. _. -�..,.�-,; , ..,,�.6 �� ,r,,, ��.:�, i ^�,.,;,.._;,. .... i . �.. � ��, -� �� Page12of13 Sarnple �reserWatio� Verification ENCO Cary Wor� C?rder: C�089�4 Praject: Swift Creek Water Qua�ity Client: The Cat�na Group (TF1015) Proj�ct #: [none] Lagged In: 1Q-J�I-15 12�54 � L�gged By: Je�nifer L. Ja�kson �5089Q4-01' Cont Type Pres (pH} pH Ch�ck�d � pN Adjusted p�kelTime Reagei�t Used/Comments Requiremeni In Gontrol Adjusted C 25DmLP+H2'S�4 <2 `Y,^! N�' NF� Y 1�� NA � 25(�mLP+HfVQ3 <2 Y, N 1 N,� Y I,�N%f NA �5089(�4-U� Con�• Type �'��s (pH} pH Checked /�� j�s�Qd Data�me Reagent User�fCommen�s Requirement In Contrvi Adjusted A �6�mLP+HNO3 [F] �2 Y! N+' �,� Y 1 N 1'I�A ? c5ossaa�-o� Cont Typ� Pres (pH} pH Checked f P�I F�djusted p��'�1�e Reagent Use�ffComments Requirement In Contral Adjus#ed C 2�i�mLP�-H2SC�4 �2 �Y /� N 1 NA Y J�hJ �1 fU�, - b 25QmLP+#��p(}3 <2 �(�`1 N I NA Y f�. ��JA �508904-04 Cent Type �'res (pH} pH Checked 1 pH Adjusted �ate/Time R�agent U�edlGarr�m�nts R�quir�meni In Co�itrol Adj+�sted A 250mt�P+HN()3 [F] �-2 Y 1 N I'1Vr-Iy Y 1�1 1°I�A, �_- �5U89a4-Q5 Cont Typ� p�e� f P�� P� ��ked' pH Adjusted Dat��rne R�agent Used/Comments ' Re�uiren�ent Bn Contral Adjusted � C 25DmLP+H2Sa4 _�2 �Y. 1 N I NA Y Ir'',�I� - J NA D 250mLP+NN�3 <2 �Y `! N/ f�A Y f�N NA �5�D8904-06 Cont Type Pres (pH) pH CheckerJ f p� Adjustec3 Qate�me Reagent lJsediCorr�menks Requirement In Control Adj�sted A 250mLP+HNC�3 [F] <2 Y I N} hlAj Y 1 N 1 f�A �, Rea ent Name I� 1 2 I��a �nt fVat71� IL) 3 � 4 a Rea ent i�ame II� 5 � Page 13 of 13 Appendix C— Historical Water Quality Analysis Water Quality Study February 2016 Complete 540 — Triangle Expressway Southeast Extension Page 138 Table 1. Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at City of Raleigh monitorin station J4500000. Date Tem °C H SU NH3 as N m/L CMC CCC 8/19/2009 25.2 7.1 0.08 9.86 1.29 9/2/2009 21.7 7.1 0.42 13.18 1.62 10/28/2009 16.1 7.3 0.02 16.68 2.08 11/24/2009 133 6.7 0.14 29.76 3.17 12/31/2009 4.9 6.4 0.03 33.74 SJO 1/22/2010 7.1 6.5 0.07 32.61 4.89 2/26/2010 5.4 7 0.01 24.10 4.84 3/31/2010 13.8 6.6 0.06 31.28 3.13 4/8/2010 20.1 7.1 0.13 15.05 1.80 5/27/2010 20.5 6.9 0.08 17.39 1.89 6/24/2010 26.7 7.1 0.23 8.71 1.17 7/23/2010 26.3 6.7 026 1225 1.37 8/27/2010 24.4 7 0.17 ll.59 1.42 9/10/2010 21.8 7.2 0.12 11.74 1.53 10/22/2010 13.5 7 0.08 24.10 2.87 11/19/2010 9.8 72 0.35 19.73 3.32 12/22/2010 5.3 7 0.01 24.10 4.87 U20/2011 4.3 6.8 3.73 28.05 5.53 2/10/2011 6 7.1 0.22 21.94 4.46 3/3/2011 103 6.9 0.05 26.15 3.65 5/17/2011 20.4 7 0.11 16.15 1.84 6/10/2011 25.1 7 0.11 10.94 1.36 7/29/2011 26.8 7.3 0.51 6.87 1.05 8/11/2011 26.1 7.1 0.14 9.16 1.22 9/12/2011 22.5 73 0.14 9.81 1.38 10/21/2011 15.1 7.2 0.08 19.73 2.36 11/10/2011 11.8 7.3 0.05 17.51 2.75 12/30/2011 7.8 7.2 0.05 19.73 3.78 1/12/2012 7.6 7.1 0.07 21.94 4.03 2/23/2012 5.8 7.2 0.06 19.73 4.30 3/8/2012 8 7.1 0.04 21.94 3.92 4/26/2012 15.4 7.2 0.06 19.73 2.32 5/10/2012 18.9 7.2 0.05 14.93 1.85 7/31/2012 25.1 6.8 0.27 12.75 1.45 8/16/2012 22.8 6.9 0.19 14.37 1.63 9/11/2012 22.1 6.8 0.08 16.34 1.76 10/4/2012 21.6 7 1.88 14.62 1.70 11/12/2012 10.6 6.7 0.03 29.76 3.77 12/12/2012 11.5 6.9 0.07 26.15 3.38 1/23/2013 6.2 6.5 0.06 32.61 5.18 2/14/2013 9 6.8 0.10 28.05 4.08 3/14/2013 9.4 7.1 0.08 21.94 3.58 4/8/2013 14.5 6.9 0.05 26.15 2.79 5/7/2013 17.8 7.4 0.09 12.67 1.74 6/13/2013 25.1 7.1 0.11 9.95 1.30 7/10/2013 26.4 6.8 0.12 11.44 1.33 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 1 Date Tem °C H SU NH3 as N m/L CMC CCC 8/6/2013 25.6 6.8 0.11 12.23 1.40 9/10/2013 26.4 7.1 0.05 8.93 1.20 10/24/2013 12.9 7 0.10 24.10 2.98 11/7/2013 14.2 6.9 0.05 26.15 2.84 12/5/2013 10.4 7.2 0.08 19.73 3.20 1/16/2014 7.5 6.7 0.02 29.76 4.61 2/14/2014 2.7 6.9 0.02 26.15 5.96 3/10/2014 8.4 6.8 0.04 28.05 4.25 4/10/2014 15.4 6.9 0.04 26.15 2.63 5/13/2014 22.1 7 0.15 14.02 1.65 6/26/2014 273 7 0.13 9.11 1.18 7/24/2014 25.8 7.1 0.11 9.39 1.25 8/6/2014 25.2 7.1 0.08 9.86 1.29 9/3/2014 26.1 7.1 0.09 9.16 1.22 10/16/2014 20.2 7 0.08 16.42 1.86 11/17/2014 8.9 7.3 0.05 17.51 332 12/30/2014 9.9 7.4 0.03 15.34 2.90 1/12/2015 7 6.9 0.12 26.15 4.52 2/3/2015 7.5 7.2 0.05 19.73 3.85 3/3/2015 7.1 7.3 0.03 17.51 3.72 4/7/2015 17.1 7.4 0.06 13.42 1.82 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 2 Table 2. Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at City of Raleigh monitorin station J4510000. Date Tem °C H SU NH3 as N m/L CMC CCC 8/19/2009 26.0 7.2 0.08 8.29 117 9/2/2009 22.9 7.1 0.20 11.94 1.50 10/28/2009 16.9 7.2 0.01 17.62 2.10 11/24/2009 13.5 6.6 0.18 31.28 319 12/31/2009 53 6.5 0.04 32.61 5.49 1/22/2010 7.5 6.6 0.41 31.28 4.69 2/26/2010 6.0 6.8 0.02 28.05 4.96 3/31/2010 14.4 6.6 0.05 31.28 3.01 4/8/2010 20.4 7.0 0.16 16.15 1.84 5/27/2010 21.0 6.9 0.11 16.68 1.83 6/24/2010 26.8 7.0 0.10 9.50 122 7/23/2010 26.4 7.0 0.09 9.82 125 8/27/2010 24.5 6.9 0.16 12.48 1.46 9/10/2010 22.1 7.1 0.13 12.75 1.58 10/22/2010 13.6 7.1 0.08 21.94 2.73 11/19/2010 102 72 0.18 19.73 324 12/22/2010 5.5 7.0 0.02 24.10 4.81 U20/2011 4.4 7.0 0.40 24.10 5.16 2/10/2011 6.1 7.0 0.12 24.10 4.62 3/3/2011 10.6 6.9 0.07 26.15 3.58 5/17/2011 20.9 72 0.09 12.65 1.62 6/10/2011 25.0 6.9 0.11 11.97 1.42 7/29/2011 26.7 7.2 0.28 7.82 1.12 8/11/2011 26.4 7.0 0.10 9.82 1.25 9/12/2011 223 7.2 0.07 11.26 1.48 10/21/2011 14.8 7.1 0.04 21.94 2.53 ll/10/2011 10.7 6.8 0.02 28.05 3.66 12/30/2011 7.3 6.9 0.04 26.15 4.43 1/12/2012 7.7 7.3 0.05 17.51 3.58 2/23/2012 5.9 7.2 0.09 19.73 4.27 3/8/2012 8 7.3 0.07 17.51 3.51 4/26/2012 15.3 7.1 0.11 21.94 2.45 5/10/2012 18.8 7.2 0.05 15.05 1.86 7/31/2012 24.9 6.9 0.1 12.07 1.42 8/16/2012 22.5 6.9 0.09 14.73 1.66 9/11/2012 21.2 6.8 0.06 17.61 1.86 10/4/2012 20.6 6.9 0.09 17.24 1.88 11/12/2012 10 6.9 0.09 26.15 3.72 12/12/2012 10.8 6.9 0.03 26.15 3.54 1/23/2013 4 6.9 0.07 26.15 5.48 2/14/2013 8.4 7 0.26 24.10 3.99 3/14/2013 9 6.9 0.05 26.15 3.97 4/8/2013 13.6 6.7 0.03 29.76 3.11 5/7/2013 17.3 6.9 0.15 22.67 2.33 6/13/2013 24.7 6.8 0.08 13.17 1.48 7/10/2013 24.3 6.8 0.12 13.62 1.52 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 3 Date Tem °C H SU NH3 as N m/L CMC CCC 8/6/2013 24.4 6.9 0.05 12.59 1.47 9/10/2013 24.7 6.8 0.03 13.17 1.48 10/24/2013 12.2 6.7 0.03 29.76 3.40 11/7/2013 14 6.7 0.04 29.76 3.03 12/5/2013 10.4 7.2 0.05 19.73 3.20 1/16/2014 7.1 6.6 0.04 31.28 4.82 2/14/2014 2.1 6.9 0.03 26.15 6.19 3/10/2014 8.1 6.8 0.09 28.05 4.33 4/10/2014 14.6 6.7 0.05 29.76 2.91 5/13/2014 21.4 7 0.09 14.86 1.72 6/26/2014 25 6.8 0.09 12.85 1.46 7/24/2014 24.1 6.9 0.08 12.90 1.50 8/6/2014 24.2 6.8 0.09 13.73 1.53 9/3/2014 24.4 6.9 0.08 12.59 1.47 10/16/2014 18.8 6.9 0.03 20.02 2.11 11/17/2014 7.8 7.2 0.07 19.73 3.78 12/30/2014 9.3 7.1 0.02 21.94 3.61 1/12/2015 5.4 7 0.1 24.10 4.84 2/3/2015 6.6 7.3 0.08 17.51 3.85 3/3/2015 6.6 7.2 0.03 19.73 4.08 4/7/2015 16 7.2 0.07 18.98 2.23 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 4 Table 3 Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at City of Raleigh monitorin station J4511000. Date Tem °C H SU NH3 as N m/L CMC CCC 8/19/2009 263 7.1 0.27 9.01 1.21 9/2/2009 23.3 7.1 0.21 11.55 1.46 10/28/2009 17.2 7.1 0.01 19.14 2.17 11/24/2009 14.0 6.8 0.23 28.05 2.96 12/31/2009 5.9 6.6 0.05 31.28 5.20 1/22/2010 8.0 6.5 0.09 32.61 4.61 2/26/2010 6.2 6.7 0.01 29.76 5.01 3/31/2010 14.8 6.7 0.64 29.76 2.88 4/8/2010 21.1 7.1 0.04 13.86 1.69 5/27/2010 21.5 6.8 0.09 17.18 1.82 6/24/2010 27.3 6.8 0.20 10.62 1.26 7/23/2010 27.0 6.7 0.42 11.56 1.31 8/27/2010 242 7.0 0.18 ll.78 1.44 9/10/2010 21.7 7.1 0.20 13.18 1.62 10/22/2010 13.1 7.0 0.10 24.10 2.94 11/19/2010 9.7 7.1 0.04 21.94 3.52 12/22/2010 5.1 72 0.02 19.73 4.50 U20/2011 4.6 7.1 032 21.94 4.88 2/10/2011 6.3 7.1 0.10 21.94 438 3/3/2011 11.0 7.1 0.09 21.94 3.23 5/17/2011 20.7 6.9 0.10 17.10 1.87 6/10/2011 252 6.8 0.13 12.64 1.44 7/29/2011 27.0 7.1 0.86 8.50 1.15 8/11/2011 26.6 7.1 0.20 8.78 1.18 9/12/2011 22.5 7.2 0.18 11.08 1.46 10/21/2011 14.7 7.2 0.07 19.73 2.42 ll/10/2011 13.2 7.0 0.05 24.10 2.93 12/30/2011 83 7.1 0.02 21.94 3.85 1/12/2012 8.1 7.2 0.02 19.73 3.71 2/23/2012 6.0 7.1 0.05 21.94 4.46 3/8/2012 8.4 7 0.02 24.10 3.99 4/26/2012 15.1 7.3 0.07 17.51 2.22 5/10/2012 19 7 0.05 18.13 2.01 7/31/2012 25.2 6.9 0.05 11.78 1.40 8/16/2012 22.3 6.8 0.28 16.07 1.73 9/11/2012 21.3 6.9 0.09 16.27 1.80 10/4/2012 20.6 6.9 0.04 17.24 1.88 11/12/2012 9.9 6.8 0.09 28.05 3.85 12/12/2012 10.9 6.8 0.03 28.05 3.61 1/23/2013 6.6 6.8 0.07 28.05 4.77 2/14/2013 8.9 7.1 0.09 21.94 3.70 3/14/2013 9.2 6.8 0.04 28.05 4.03 4/8/2013 13.4 6.9 0.09 26.15 2.99 5/7/2013 16.9 7 0.11 21.58 2.30 6/13/2013 24.5 6.8 0.28 13.39 1.50 7/10/2013 24.2 6.9 0.07 12.80 1.49 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 5 Date Tem °C H SU NH3 as N m/L CMC CCC 8/6/2013 243 6.9 0.06 12.69 1.48 9/10/2013 24.6 6.9 0.09 12.38 1.45 10/24/2013 12.3 6.8 0.02 28.05 3.30 11/7/2013 13.9 6.9 0.02 26.15 2.89 12/5/2013 8.8 7.1 0.08 21.94 3.73 1/16/2014 7 6.8 0.05 28.05 4.65 2/14/2014 2.2 6.9 0.02 26.15 6.16 3/10/2014 8.2 6.9 0.08 26.15 4.18 4/10/2014 14.7 6.8 0.02 28.05 2.83 5/13/2014 213 6.9 0.07 16.27 1.80 6/26/2014 25 6.9 0.09 ll.97 1.42 7/24/2014 24.3 7 0.09 11.69 1.43 8/6/2014 24.4 6.8 0.07 13.51 1.51 9/3/2014 24.9 6.9 0.05 12.07 1.42 10/16/2014 19 6.8 0.09 21.13 2.14 11/17/2014 8.2 7.1 0.11 21.94 3.87 12/30/2014 9.7 6.9 0.05 26.15 3.80 1/12/2015 5.5 6.8 0.08 28.05 5.12 2/3/2015 6.7 7 0.1 24.10 4.45 3/3/2015 6.8 7 0.03 24.10 4.42 4/7/2015 16.2 7.1 0.04 20.80 2.31 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 6 Table 4 Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at City of Raleigh monitorin station J4520000. Date Tem °C H SU NH3 as N m/L CMC CCC 8/19/2009 273 6.9 0.13 9.90 1.22 9/2/2009 23.8 7.0 0.23 12.18 1.48 10/28/2009 17.6 7.2 0.01 16.62 2.01 11/24/2009 14.2 6.7 0.22 29.76 2.99 12/31/2009 6.0 6.5 0.02 32.61 5.25 1/22/2010 8.2 6.6 0.08 31.28 4.49 2/26/2010 6.3 6.9 0.01 26.15 4.73 3/31/2010 15.1 6.8 0.04 28.05 2.76 4/8/2010 21.5 7.0 0.20 14.74 1.71 5/27/2010 21.7 6.9 0.09 15.74 1.75 6/24/2010 26.7 6.8 0.11 11.16 1.30 7/23/2010 262 6.8 0.13 ll.63 1.35 8/27/2010 24.9 7.1 0.12 10.11 1.32 9/10/2010 22.4 7.0 0.15 13.68 1.62 10/22/2010 13.7 7.2 0.07 19.73 2.58 11/19/2010 10.3 72 0.06 19.73 3.22 12/22/2010 5.5 7.1 0.03 21.94 4.61 U20/2011 4.9 7.0 0.45 24.10 5.00 2/10/2011 6.0 7.2 0.10 19.73 4.24 3/3/2011 113 7.1 0.05 21.94 3.17 5/17/2011 21.1 6.9 0.09 16.54 1.82 6/10/2011 25.4 6.7 0.08 1320 1.45 7/29/2011 27.4 7.0 0.17 9.04 1.17 8/11/2011 263 7.0 0.09 9.90 1.26 9/12/2011 22.4 7.1 0.08 12.44 1.55 10/21/2011 15.1 7.0 0.05 24.10 2.59 ll/10/2011 11.3 6.9 0.03 26.15 3.42 12/30/2011 7.6 7.0 0.05 24.10 4.20 1/12/2012 7.7 7.1 0.05 21.94 4.00 2/23/2012 5.9 7.3 0.07 17.51 4.02 3/8/2012 8.1 7.2 0.04 19.73 3.71 4/26/2012 15.6 7 0.24 24.03 2.51 5/10/2012 19.2 7 0.05 17.83 1.99 7/31/2012 25.5 6.8 0.08 1233 1.41 8/16/2012 22.8 6.9 0.08 14.37 1.63 9/11/2012 21.4 6.6 0.05 19.34 1.92 10/4/2012 21 6.8 0.04 17.90 1.88 11/12/2012 10 6.7 0.02 29.76 3.92 12/12/2012 10.8 6.7 0.05 29.76 3.72 1/23/2013 4.3 6.8 0.05 28.05 5.53 2/14/2013 9.3 7.1 0.11 21.94 3.61 3/14/2013 9.5 6.7 0.07 29.76 4.05 4/8/2013 13.7 7 0.04 24.10 2.83 5/7/2013 17.4 7.1 0.1 18.83 2.14 6/13/2013 25.3 6.8 0.17 12.54 1.43 7/10/2013 24.5 6.9 0.1 12.48 1.46 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 7 Date Tem °C H SU NH3 as N m/L CMC CCC 8/6/2013 24.9 6.8 0.05 12.96 1.47 9/10/2013 253 7 0.02 10.76 1.34 10/24/2013 12.2 6.9 0.02 26.15 3.23 11/7/2013 14.2 7 0.05 24.10 2.74 12/5/2013 9.9 6.8 0.04 28.05 3.85 1/16/2014 7.2 6.9 0.07 26.15 4.46 2/14/2014 1.9 6.8 0.06 28.05 6.46 3/10/2014 8.4 6.8 0.07 28.05 4.25 4/10/2014 14.5 6.7 0.03 29.76 2.93 5/13/2014 21 7.1 0.07 13.97 1.70 6/26/2014 24.8 7.1 0.07 10.20 1.33 7/24/2014 24 7.1 0.05 10.90 1.40 8/6/2014 23.4 6.9 0.09 13.67 1.57 9/3/2014 24.3 7 0.06 11.69 1.43 10/16/2014 18.8 6.9 0.06 20.02 2.11 11/17/2014 7.8 7.3 0.03 17.51 3.56 12/30/2014 9.9 6.9 0.05 26.15 3.75 1/12/2015 5.3 6.8 0.11 28.05 5.19 2/3/2015 6.3 6.8 0.08 28.05 4.86 3/3/2015 6.4 7.1 0.14 21.94 435 4/7/2015 15.9 7 0.05 23.44 2.46 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 8 Table 5 Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at City of Raleigh monitorin station J4580000. Date Tem °C H SU NH3 as N(mg/L) CMC CCC 5/2/2012 21.50 6.9 0.07 16.00 1.77 7/19/2012 26.2 6.9 0.05 10.84 1.31 8/2/2012 25.60 6.9 0.07 ll.39 1.36 9/13/2012 20.20 6.9 0.06 17.83 1.93 10/3/2012 21.20 6.9 0.07 16.41 1.81 11/28/2012 6.10 6.8 0.04 28.05 4.92 12/20/2012 8.60 6.7 0.02 29.76 4.29 1/11/2013 9.70 6.8 0.05 28.05 3.90 2/7/2013 7.00 7.0 0.06 24.10 4.36 3/13/2013 10.10 7.1 0.07 21.94 3.43 4/4/2013 10.80 6.9 0.03 26.15 3.54 5/8/2013 16.00 72 0.10 18.98 2.23 6/19/2013 22.10 7.2 0.05 11.45 1.50 7/2/2013 23.90 7.1 0.08 10.99 1.41 8/5/2013 24.10 7.1 0.05 10.81 139 9/9/2013 22.50 7.1 0.04 12.34 1.54 10/17/2013 17.90 6.7 0.02 24.58 2.36 11/6/2013 12.90 7.1 0.16 21.94 2.86 12/4/2013 820 6.7 0.08 29.76 4.40 1/8/2014 1.70 6.8 0.08 28.05 6.54 2/6/2014 6.60 6.9 0.07 26.15 4.63 3/6/2014 4.40 6.9 0.05 26.15 5.34 4/7/2014 14.10 6.8 0.02 28.05 2.94 5/12/2014 20.60 7.0 0.05 15.88 1.82 6/12/2014 22.70 7.1 0.04 12.14 1.52 7/17/2014 23.00 7.0 0.06 13.02 1.56 8/5/2014 23.10 6.9 0.10 14.02 1.60 9/2/2014 26.00 6.9 0.05 11.02 1.33 10/9/2014 19.20 7.2 0.02 14.56 1.81 11/6/2014 15.90 7.1 0.10 2132 2.36 12/4/2014 10.20 7.1 0.04 21.94 3.40 U14/2015 5.80 7.2 0.08 19.73 4.30 2/12/2015 6.10 7.3 0.06 17.51 3.97 3/18/2015 12.40 7.1 0.03 21.94 2.95 4/6/2015 14.10 7.2 0.02 19.73 2.52 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 9 Table 6. Ammonia measurements and event-specific acute and chronic criteria (USEPA 2013) at USGS monitoring station 02087701. Date Temp (°C) pH (SU) NH3 as N(mg/L) CMC CCC 10/18/1989 22 6.6 0.05 18.43 1.84 4/4/1990 15 6.7 0.04 29.76 2.84 6/20/1990 28 7.2 0.02 7.07 1.03 8/14/1990 30 8.3 0.03 0.96 0.26 9/5/1990 27.6 7.8 0.01 3.00 0.62 10/24/1990 22 6.9 0.02 15.41 1J2 4/25/1991 18 6.7 0.06 24.43 2.34 6/11/1991 25 8.6 0.02 0.81 0.21 7/23/1991 33 7.3 0.04 4.14 0.70 8/6/1991 28 7.1 0.2 7.86 1.08 9/17/1991 27 7.2 0.02 7.68 1.10 11/13/1991 10 6.5 0.07 32.61 4.06 4/16/1992 16 7.2 0.02 19.11 2.23 6/2/1992 22 7 0.02 1420 1.66 8/13/1992 30 6.5 0.14 9.90 1.12 10/15/1992 21 72 0.06 12.63 1.61 4/26/1993 18 72 0.03 16.19 1.96 6/25/1993 27.1 6.7 0.04 11.49 130 8/4/1993 28.8 7 0.05 8.08 1.07 10/14/1993 173 7 0.11 20.96 2.25 11/15/1993 14.3 7.1 0.01 21.94 2.61 4/22/1994 20.9 7 0.03 15.56 1.78 6/21/1994 28.8 7.2 0.02 6.61 0.98 8/2/1994 28.1 6.9 0.04 9.29 1.16 9/21/1994 23.3 6.6 0.19 16.55 1.69 6/16/1995 23.6 6.5 0.02 16.82 1.69 8/5/2005 29 6.9 0.015 8.62 1.09 8/5/2005 27.6 6.9 0.158 9.68 1.20 10/19/2005 19.9 6.7 0.044 20.87 2.07 4/20/2006 17.5 63 0.09 29.69 2.56 7/5/2006 29.6 6.7 0.012 9.34 1.11 7/5/2006 22.7 6.1 0.055 20.11 1.85 8/30/2006 31.7 8.5 0.014 0.56 0.16 8/30/2006 28.2 6.3 0.027 12.23 1.28 8/30/2006 23.8 6.7 1.74 15.10 1.61 4/26/2007 15.5 5.5 0.047 38.25 3.O1 6/21/2007 26.2 6.4 0.042 14.03 1.44 6/21/2007 23.2 6.7 0.625 15.87 1.67 1 UU2007 16.7 6.8 0.067 25.64 2.49 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 10 Date Tem °C H SU NH3 as N m/L CMC CCC 11/1/2007 16.5 6.7 0.075 27.66 2.58 11/1/2007 16.4 6.8 0.088 26.28 2.54 4/28/2008 17.5 6.6 0.029 26.76 2.46 6/25/2008 25.5 7 0.131 10.62 1.32 8/21/2008 25.9 6.9 0.07 11.15 1.34 6/25/2009 22.3 6.6 0.208 17.98 1.81 8/20/2009 28.2 6.6 0.155 11.02 1.24 8/20/2009 24.7 7 2.1 11.35 1.39 10/15/2009 19.4 6.8 0.048 20.50 2.09 10/15/2009 19.4 6.9 0.06 19.11 2.03 4/15/2010 17.5 6.5 0.118 27.90 2.50 6/10/2010 28.1 6.9 0.027 9.29 1.16 6/10/2010 20.8 7.2 1.28 12.84 1.63 8/12/2010 31.5 72 0.099 529 0.82 8/12/2010 29.6 6.8 0.195 8.80 1.08 10/14/2010 212 7 0.078 15.17 1.75 10/14/2010 21.1 6.8 0.079 17.80 1.87 4/25/2011 20.8 6.8 0.081 1825 1.91 4/25/2011 19.4 6.6 0.107 22.86 2.18 6/28/2011 28.5 7 0.123 8.28 1.09 6/28/2011 28.5 6.9 0.137 8.99 1.13 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 11 Table 7 Copper measurements and event-specific acute and chronic water quality standards (USEPA 2007, NC Register 2014) at USGS monitorin station 02087701. Date Dissolved Cu (ug/L) Hardness (as mg/L of CaCOs) CMC CCC 10/18/1989 0.96 17.7 2.63 2.04 4/4/1990 2.88 22.5 3.30 2.50 6/20/1990 2.88 22.4 3.28 2.49 8/14/1990 2.88 19.6 2.89 223 9/5/1990 5.76 19.6 2.89 223 9/5/1990 2.88 18.6 2.75 2.13 10/24/1990 1.92 22.2 325 2.47 4/25/1991 2.88 22.9 335 2.54 6/11/1991 1.92 20.1 2.96 227 7/23/1991 1.92 21.6 3.17 2.42 8/6/1991 3.84 19.2 2.84 2.19 9/17/1991 2.88 19 2.81 2.17 4/16/1992 4.8 23.8 3.48 2.63 6/2/1992 0.96 22.9 3.35 2.54 8/13/1992 1.92 16.8 2.50 1.95 10/15/1992 0.96 17.5 2.60 2.02 4/26/1993 1.92 282 4.08 3.04 6/25/1993 1.92 30.5 439 3.25 8/4/1993 0.96 22.3 327 2.48 10/14/1993 0.96 20.5 3.02 2.31 11/15/1993 0.96 20.3 2.99 229 4/22/1994 1.92 25.6 3.72 2.80 6/21/1994 1.92 24.2 3.53 2.66 8/2/1994 1.92 19.6 2.89 2.23 12/6/1994 3.84 21.6 3.17 2.42 5/1/1995 1.92 15.9 2.38 1.86 6/16/1995 1.92 20.8 3.06 234 10/19/2005 0.768 22.6 3.31 2.51 4/20/2006 1.248 16.7 2.49 1.94 4/26/2007 1.536 26.1 3.79 2.84 10/15/2009 2.592 20.2 2.98 2.28 4/15/2010 8.352 22.1 3.24 2.47 10/14/2010 1.728 18.8 2.78 2.15 4/25/2011 1.344 22.7 3.32 2.52 Lower Swift Creek Water Quality Report September 2015 Appendix C- Historical Water Quality Analysis Page 12