Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
SUP 06-10X2A; AGUA HEDIONDA OUTER LAGOON MAINTENANCE; AGUA HEDIONDA OUTER LAGOON FLOOD SHOAL MAINTENANCE DREDGING SEDIMENT SAMPLING AND ANALYSIS PLAN 2017-2018; 2018-01-01
CABRILLO POWER I LLC, AGUA HEDIONDA LAGOON OUTER LAGOON FLOOD SHOAL MAINTENANCE DREDGING SEDIMENT SAMPLING AND ANALYSIS PLAN 2017‐2018 ACOE #2001‐00328‐RRS Prepared for: Cabrillo Power I LLC 4600 Carlsbad Boulevard Carlsbad, CA 92009‐4301 Prepared by: Merkel & Associates, Inc. 5434 Ruffin Road San Diego, CA 92123 Phone: (858) 560‐5465 Fax: (858) 560‐7779 January 2018 Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 i TABLE OF CONTENTS 1.0 SUMMARY ...................................................................................................................................1 2.0 INTRODUCTION ...........................................................................................................................1 3.0 METHODS ....................................................................................................................................4 3.1 Core Logging and Sample Handling..........................................................................................4 3.2 Physical and Chemical Analyses...............................................................................................6 4.0 RESULTS.......................................................................................................................................7 4.1 Sediment Physical Analysis ......................................................................................................7 4.2 Sediment Chemical Analysis ....................................................................................................7 5.0 DISCUSSION...............................................................................................................................12 5.1 Suitability Recommendations................................................................................................12 6.0 REFERENCES...............................................................................................................................13 LIST OF FIGURES Figure 1. Beach and Lagoon Sampling Stations. ...................................................................................2 LIST OF TABLES Table 1. Percent sand composition from prior flood shoal pre‐dredging testing programs................3 Table 2. Sample locations at tidal basin and receiver beach................................................................4 Table 3. Chemical and physical analyses for sediment samples...........................................................6 Table 4. Grain size and TOC results.......................................................................................................7 Table 5. Sediment chemistry results.....................................................................................................8 Table 6. Historical grain size results (mm)..........................................................................................12 APPENDICES Appendix A Core Logs Appendix B Core Photographs Appendix C Laboratory Data Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 1 CABRILLO POWER I LLC, AGUA HEDIONDA LAGOON OUTER LAGOON FLOOD SHOAL MAINTENANCE DREDGING SEDIMENT CHARACTERIZATION REPORT ACOE #2001‐00328‐RRS 1.0 SUMMARY A sediment characterization and testing program was undertaken to support maintenance dredging of the outer basin at Agua Hedionda Lagoon, Carlsbad, California. Maintenance dredging and beach replenishment are proposed to occur under ACOE IP #2001‐00328‐RRS as part of an on‐going maintenance dredging program at the site. The testing program sampled the Outer Lagoon flood shoal, as well as the proposed receiver beaches identified as North, Middle, and South Carlsbad State Beaches. The flood shoal was found to consist of mostly medium to coarse grained sands derived from coastal littoral sand entrainment during incoming tides. The sand composition within the shoal averaged 99.7% while the receiver beaches averaged 99.5% sand. Total organic carbon (TOC) values were relatively low or not detected in both lagoon and receiver beach locations. Overall, the shoal sand is extremely comparable to the receiver beach from which the material originated. Testing of the shoal and receiver beaches indicate non‐detectable or very low chemical concentrations, below any regulatory guidelines values suggesting that the shoal material is highly suitable for beach replenishment at the receiver beach sites. 2.0 INTRODUCTION The outer basin of Agua Hedionda Lagoon is an efficient sediment trap for entrained littoral sand that is brought into the lagoon through the combined influence of tidal circulation and cooling water flows (Figure 1). Sediment accumulation in the flood shoal of the lagoon degrades the tidal prism and tidal flushing within the lagoon and also reduces the operational efficiency of the power plant located adjacent to the outer basin. Since initial lagoon dredging in 1954, the accumulated flood shoal sand has been dredged out every one to three years. This maintains an open tidal connection and minimizes tidal muting of the lagoon. Maintenance shoal removal and beach replenishment are proposed to occur under ACOE IP #2001‐00328‐RRS and are part of an on‐going maintenance dredging program at the site. Dredging is completed every two to three years as required by shoal development. Under permit, up to 500,000 cubic yards (cy) of sediment may be dredged per maintenance interval. The dredging is all maintenance littoral sand removal with no cuts into native sediments. The material is to be removed by suction cutterhead dredge and placed on coastal beaches outside of the lagoon. While beach placement is not proposed to the north of the ocean inlet for the 2017‐2018 dredge cycle (North Carlsbad State Beach) and would be limited to the Middle and South Carlsbad State Beaches, sampling on North Beach occurred to provide overall context of sediment conditions within the littoral cell. Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 3 In 2014, the California State Lands Commission requested a verification testing of the shoal sand chemistry in conjunction with issuance of a new long‐term lease (Lease No. 932.1) allowing the placement of Agua Hedionda Lagoon maintenance dredged materials onto the beach. While the nature of the source material and physical characteristics of the sand are not conducive to be carriers of contaminants, testing was conducted for this verification purpose in July 2014. The same shoal area that has been recurrently dredged was tested using the same sampling stations distributed through the shoal (L‐1 through L‐3). In addition for beach compatibility, grain size and TOC was determined for the receiver beach (B‐1 through B‐3). Sediment grain size characteristics and TOC continued to reveal the littoral sand nature of the shoal (Table 1). Table 1. Percent sand composition from prior flood shoal pre‐dredging testing programs. Year Percent Sand Source 1993 95.5%‐97.5% MEC 1993 1995 96.0%‐98.9% MEC 1995 1997 93.8%‐98.0% MEC 1997 2000 98.4%‐98.7% MEC 2000 2002 90.0%‐97.1% MEC 2002 2004 97.4%‐98.9% MEC‐Weston 2004 2006 97.9%‐98.7% Weston 2006 2008 97.7%‐99.2% M&A 2008 2010 97.2%‐98.5% M&A 2010 2014 98.1%‐99.3% M&A 2014 There were very few chemicals of concern detected within the collected sediments; and when detected, concentrations were at low levels falling below established effects range median (ERM) and effects range low (ERL) guideline values, where such levels have been determined (M&A 2014). ERL and ERM values were developed as sediment quality guidelines to determine the potential for chemical contaminants in the sediment to cause adverse environmental effects (Buchman 2008; Long et al. 1995). The ERL is the lowest tenth percentile concentration of the available sediment toxicity data, and represents a concentration below which effects to sensitive species are not expected to occur. The ERM is the median effects concentration, above which adverse effects are likely to occur. This sediment characterization report details the collection and testing program conducted on the proposed dredged material in accordance with the standard procedures outlined in conditions of ACOE IP #2001‐00328‐RRS, Evaluation of Dredged Material Proposed for Discharge in Waters of the U.S. (Inland Testing Manual [ITM]) (USEPA/USACE 1998), and regional guidance of the USACE regulatory branch (USACE 1991). These guidance documents apply to inland waters, near‐coastal waters, and surrounding environs. Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 4 3.0 METHODS Sediment testing was performed in accordance with the requirements of regulatory permits and the Inland Testing Manual (USEPA/USACE 1998). The methods employed followed those outlined in the Cabrillo Power I LLC, Agua Hedionda Lagoon Outer Lagoon Flood Shoal Maintenance Dredging Sediment Sampling And Analysis Plan, ACOE #2001‐00328‐RRS (Merkel & Associates 2017). Sampling methods and locations for the outer lagoon and the receiver beaches followed that used during prior testing events (Figure 1). Samples were collected using a 4‐inch diameter vibracore on December 19, 2017 with a target penetration to a depth of –24 ft MLLW or depth of refusal. Lagoon sample locations (L‐1, L‐2, and L‐3) were distributed to represent approximately one third of the dredge material volume to be removed. Coordinates and target penetration are shown for each sampling location in Table 2. Receiver beaches were sampled at high (+5 to +7 feet MLLW) and low (‐2 to +1 feet MLLW) intertidal elevations on December 19, 2017. Samples consisted of surface sands collected by using a 6‐inch deep hand core. Beach samples were collected from Carlsbad State Beach at the north (B‐ 1), middle (B‐2), and south (B‐3) beaches where material is to be placed (Figure 1). Sampling coordinates for beach sites are provided in Table 2. Table 2. Sample locations at tidal basin and receiver beach. Site Sample Location Collection Date Longitude Latitude Target Penetration (ft) L‐1 12/19/17 33.1454 117.3423 24 L‐2 12/19/17 33.1447 117.3414 24 Shoal (Outer Lagoon ) L‐3 12/19/17 33.1440 117.3400 24 B‐1 12/19/17 33.1497 117.3486 0.5 B‐2 12/19/17 33.1417 117.3414 0.5 Receiver Site (Beach) B‐3 12/19/17 33.1369 117.3386 0.5 3.1 CORE LOGGING AND SAMPLE HANDLING Cores in the lagoon were collected at all three locations with penetration to approximately 7 feet before hitting refusal. Core samples were carefully extruded onto clean trays, photographed, and observed for unique strata, color, odors, etc. These observations, along with information on weather, currents, tides, winds, and other site conditions were recorded in field logs (Appendix A). Photographs of the cores were taken to provide a visual documentation of sediment character (Appendix B). Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 5 The following information was recorded during the sediment collection program in a project‐ specific field log: Date and time of collection Sample identification code Sampling location (latitude/longitude to within a 3‐meter accuracy) Water depth or elevation (± 0.1 ft) Tidal stage Climatic conditions Sampling method and any problems encountered Core penetration/core recovery Description of the material type obtained in the samples (color, odor, etc.) Description of any vertical stratification in each core Description of sediment subsampling methods if any required Sediment stratification has not been observed in any of the prior characterizations of the flood shoal and no significant stratification was observed in the present effort. As a result, a composite sample was collected from the entire core length at each location (L‐1, L‐2, and L‐3). Collected sediments were kept separate in sample containers labeled with individual sample identification, date and time of collection, and stored with ice packs at approximately 4°C until analyzed by the laboratory. Each sample was thoroughly homogenized in clean, non‐contaminating stainless steel mixing bowls and sub‐sampled for archive purposes. All three lagoon samples were individually analyzed for TOC and grain size distribution. A composite lagoon sample (composed of sediment from L‐1, L‐2, and L‐3) was analyzed for physical and chemical analyses (Table 3). Receiver beach sediments were collected and processed similarly to the dredge site sediments for compatibility assessment. High and low beach samples at each site were combined to characterize each sample site. All samples were processed as bulk samples with no sub‐sampling or stratified sampling. Because these sediment samples were limited to 6‐inch surface grabs, no core logs were prepared for beach sampling. Although the current dredge cycle does not include disposal at the north receiver area, a sediment sample was collected from B‐1 for physical analyses only (grain size and TOC). The other beach samples (B‐2 and B‐3) were also individually analyzed for TOC and grain size distribution. A composite receiver site sample (composed of sediment from B‐2 and B‐3) was analyzed for physical and chemical analyses. Proper record keeping and chain‐of‐custody procedures were followed to allow samples to be traced from collection to their final disposition. Sample container identification information was recorded on the chain‐of‐custody form. The chain‐of‐custody forms identified the sampling organization, point of contact, sample collection date and time, type of sample, and project. The form also served as a sample analysis request form. Samples were sent to the laboratory along with a chain‐of‐custody form specifying the sample identification and the analyses to be conducted. Samples will be held for a minimum period of three months following collection. Following this period the samples will be disposed of unless the client requests transfer of the sample. Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 6 3.2 PHYSICAL AND CHEMICAL ANALYSES The physical and chemical analyses and methods for the sediment samples are listed in Table 3. Eurofins Calscience, Inc., a National Environmental Laboratory (NELAP) accredited laboratory (Eurofins), conducted all physical and analytical chemical analyses. Table 3. Chemical and physical analyses for sediment samples. Analyte Analysis Method Sediment Target Detection Limitsa, b Percent/Total solids SM 2540B 0.1% Total Organic Carbon 9060 A 500 mg/kg Arsenic 6020/6010Bc 0.1 mg/kg Cadmium 6020/6010Bc 0.1 mg/kg Chromium 6020/6010Bc 0.1 mg/kg Copper 6020/6010Bc 0.1 mg/kg Lead 6020/6010Bc 0.1 mg/kg Mercury 7471Ac 0.02 mg/kg Nickel 6020/6010Bc 0.1 mg/kg Selenium 6020/6010Bc 0.1 mg/kg Silver 6020/6010Bc 0.1 mg/kg Zinc 6020/6010Bc 1.0 mg/kg PAHsd 8270C SIM/ GC/TQ 10 µg/kg Pesticidese 8081A 1.0 ‐ 25 µg/kg PCB congenersf 8082A ECD 0.5 µg/kg Phenols 8270C SIM 10 – 500 µg/kg Phthalates 8270C SIM 10 µg/kg Pyrethroidsg GC/MS/MS 0.5 – 1.0 µg/kg Notes: a Sediment minimum detection limits are on a dry‐weight basis. b Reporting limits provided by Eurofins Calscience Environmental Laboratories, Inc. c USEPA 1986‐1996. SW ‐846. Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, 3rd Edition. d Includes 1‐Methylnapthalene, 2‐Methylnapthalene, 2,4,5‐Trichlorophenol, 2,4,6‐Trichlorophenol, 2,4‐ Dichlorophenol,2,4‐Dimethylphenol, 2,4‐Dinitrophenol, 2‐Chlorphenol, 2‐Methylnapthalene, Acenaphthene, Acenaphthylene, Anthracene, Benzo(a)anthracene, Benzo(a)pyrene, Benzo (b) Fluoranthene, Benzo (g,h,i) Perylene, Benzo (k) Fluoranthene, Chrysene, Dibenz (a,h) Anthracene, Fluoranthene, Fluorene, Indeno (1,2,3‐c,d) Pyrene, Naphthalene, Pentachlorophenol, Phenanthrene, and Pyrene. e Includes 2,4'‐DDD, 2,4'‐DDE, 2,4'‐DDT, 4,4'‐DDD, 4,4'‐DDE, 4,4‐DDT, DDTs, Aldrin, Alpha‐BHC, Beta‐BHC, Chlordane, Delta‐BHC, Dieldrin, Endosulfan I, Endosulfan II, Endosulfan Sulfate, Endrin, Endrin Aldehyde, Endrin Ketone, Gamma‐BHC, Heptachlor, Heptachlor Epoxide, Methoxychlor, Toxaphene. f Polychlorinated Biphenyls, sum of congeners: 003, 005/008, 015, 018, 027, 028, 029, 031, 033, 037, 044, 049, 052, 056, 060, 066, 070, 074, 077, 081, 087, 095, 097, 099, 101, 105, 110, 114, 118, 119, 123, 126, 128, 132, 137, 138/158, 141, 149, 151, 153, 156, 157, 167, 169, 170, 174, 177, 180, 183, 184, 187, 189, 194, 195, 200, 201, 203, 206, and 209. g Allethrin (Bioallethrin), Bifenthrin, Cyfluthrin‐beta (Baythroid), Cyhalothrin‐Lamba, Cypermethrin, Deltamethrin (Decamethrin), Esfenvalerate, Fenpropathrin (Danitol), Fenvalerate (sanmarton), Fluvalinate 1Permethrin (cis and trans), Resmethrin (Bioresmethrin), Resmethrin ,Sumithrin (Phenothrin), Tetramethrin, and Tralomethrin. PAH polycyclic aromatic hydrocarbon; PCB polychlorinated biphenyl; mg/kg milligrams per kilogram (parts per million) µg/kg micrograms per kilogram (parts per billion) Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 7 4.0 RESULTS 4.1 SEDIMENT PHYSICAL ANALYSIS Grain‐size and TOC analyses were performed on individual sediment samples, and results are presented in Table 4. The lagoon samples ranged from 99.6 to 99.9% sand, and averaged 99.7% sand (Table 4). The mean particle size was 0.58 mm (coarse sand). TOC values ranged from 0.14% at L‐3 to non‐detects at the other two sampling locations (Table 4). Sediments from the proposed beach receiver sites (B‐2 and B‐3) ranged from 99.4 to 99.6% sand, and averaged 99.5% sand (Table 4). The mean particle size was 0.42 mm (medium sand), and TOC values for the beach sites were all non‐detects (Table 4). Original lab results are provided in Appendix C. Table 4. Grain size and TOC results. Sample Location Gravel (%) Sand (%) Silt (%) Clay (%) Mean Particle Size (mm) TOC (%) L‐1 0.0 99.9 0.1 0.0 0.62 ND L‐2 0.0 99.6 0.2 0.2 0.47 ND L‐3 0.0 99.6 0.2 0.2 0.64 0.14 Average 0.0 99.7 0.2 0.1 0.58 ‐‐ B‐1 0.0 99.6 0.2 0.2 0.53 ND B‐2 0.0 99.6 0.2 0.2 0.42 ND B‐3 0.0 99.4 0.3 0.3 0.43 ND Average* 0.0 99.5 0.3 0.2 0.42 ‐‐ ND = Not Detected *Does not include B‐1 since disposal not anticipated during 2018 dredge cycle 4.2 SEDIMENT CHEMICAL ANALYSIS Sediment chemistry results are provided in Table 5. Composite samples were tested and findings compared to available effects range low (ERL) and effects range median (ERM) levels. ERL and ERM values were developed as sediment quality guidelines to determine the potential for chemical contaminants in the sediment to cause adverse environmental effects (Buchman 2008; Long et al. 1995). The ERL is the lowest tenth percentile concentration of the available sediment toxicity data, and represents a concentration below which effects to sensitive species are not expected to occur. The ERM is the median effects concentration, above which adverse effects are likely to occur. ERLs and ERMs do not represent sediment quality criteria, but are useful in providing a general basis for characterizing sediment quality. There were very few chemicals of concern detected within the collected sediments and if so, were detected at very low values (Table 5). All detected analytes were below their respective ERL guideline values. Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 8 Table 5. Sediment chemistry results. Compound Parameter Units ERL ERM L‐Comp B‐Comp Solids, Total % 84.5 93.1 Carbon, Total Organic % ND ND Physical Mean Grain Size mm 0.561 0.466 Arsenic mg/kg 8.2 70 0.631 0.773 Cadmium mg/kg 1.2 9.6 ND ND Chromium mg/kg 81 370 3.23 2.53 Copper mg/kg 34 270 0.984 0.878 Lead mg/kg 46.7 218 0.527 0.573 Mercury mg/kg 0.15 0.71 0.0390 ND Nickel mg/kg 20.9 51.6 1.23 0.916 Selenium mg/kg 0.226 0.265 Silver mg/kg 1 3.7 ND ND Metals Zinc mg/kg 150 410 10.8 8.88 2,4'‐DDD μg/kg ND ND 2,4'‐DDE μg/kg ND ND 2,4'‐DDT μg/kg ND ND 4,4'‐DDD μg/kg 2 20 ND ND 4,4'‐DDE μg/kg 2.2 27 ND ND 4,4'‐DDT μg/kg 1 7 ND ND Total Detectable DDTs μg/kg 1.58 46.1 ND ND Aldrin μg/kg ND ND Alpha‐BHC μg/kg ND ND Beta‐BHC μg/kg ND ND Delta‐BHC μg/kg ND ND Gamma‐BHC μg/kg ND ND Chlordane μg/kg ND ND Dieldrin μg/kg ND ND Trans‐nonachlor μg/kg 0.02 8 ND ND Endosulfan I μg/kg ND ND Endosulfan II μg/kg ND ND Endosulfan Sulfate μg/kg ND ND Endrin μg/kg ND ND Endrin Aldehyde μg/kg ND ND Endrin Ketone μg/kg ND ND Heptachlor μg/kg ND ND Heptachlor Epoxide μg/kg ND ND Methoxychlor μg/kg ND ND Mirex μg/kg ND ND Toxaphene μg/kg ND ND Alpha Chlordane μg/kg ND ND Gamma Chlordane μg/kg ND ND Cis‐nonachlor μg/kg ND ND Oxychlordane μg/kg ND ND Chlorinated Pesticides Total Chlordane μg/kg ND ND Allethrin μg/kg ND ND Bifenthrin μg/kg ND ND Cyfluthrin μg/kg ND ND Synthetic Pyrethroids Cypermethrin μg/kg ND ND Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 9 Table 5. Sediment chemistry results (continued). Compound Parameter Units ERL ERM L‐Comp B‐Comp Deltamethrin/Tralomethrin μg/kg ND ND Fenpropathrin μg/kg ND ND Fenvalerate/Esfenvalerate μg/kg ND ND Fluvalinate μg/kg ND ND Permethrin (cis/trans) μg/kg ND ND Phenothrin μg/kg ND ND Resmethrin/Bioresmethrin μg/kg ND ND Tetramethrin μg/kg ND ND lambda‐Cyhalothrin μg/kg ND ND Synthetic Pyrethroids Total Synthetic Pyrethroids μg/kg ND ND 1,6,7‐Trimethylnaphthalene μg/kg ND ND 1‐Methylnaphthalene μg/kg ND ND 1‐Methylphenanthrene μg/kg ND ND 2,6‐Dimethylnaphthalene μg/kg ND ND 2‐Methylnaphthalene μg/kg 70 670 ND ND Acenaphthene μg/kg 16 500 ND ND Acenaphthylene μg/kg 44 640 ND ND Anthracene μg/kg 85.3 1100 ND ND Benzo (a) Anthracene μg/kg 261 1600 ND ND Benzo (a) Pyrene μg/kg 430 1600 ND ND Benzo (b) Fluoranthene μg/kg ND ND Benzo (e)Pyrene μg/kg ND ND Benzo (g,h,i) Perylene μg/kg ND ND Benzo (k) Fluoranthene μg/kg ND ND Biphenyl μg/kg ND ND Chrysene μg/kg 384 2800 ND ND DCPA μg/kg ND ND Dibenz (a,h) Anthracene μg/kg 63.4 260 ND ND Dibenzothiophene μg/kg ND ND Fluoranthene μg/kg 600 5100 ND ND Fluorene μg/kg 19 540 ND ND Indeno (1,2,3‐c,d) Pyrene μg/kg ND ND Naphthalene μg/kg 160 2100 ND ND Perthane μg/kg ND ND Perylene μg/kg ND ND Phenanthrene μg/kg 240 1500 ND ND Pyrene μg/kg 665 2600 ND ND PAHs Total PAHs μg/kg 4022 44792 ND ND 2,3,4,6‐Tetrachlorophenol μg/kg ND ND 2,4,5‐Trichlorophenol μg/kg ND ND 2,4,6‐Trichlorophenol μg/kg ND ND 2,4‐Dichlorophenol μg/kg ND ND 2,4‐Dimethylphenol μg/kg ND ND 2,4‐Dinitrophenol μg/kg ND ND 2,6‐Dichlorophenol μg/kg ND ND 2‐Chlorophenol μg/kg ND ND 2‐Methylphenol μg/kg ND ND Phenols 2‐Nitrophenol μg/kg ND ND Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 10 Table 5. Sediment chemistry results (continued). Compound Parameter Units ERL ERM L‐Comp B‐Comp 3/4‐Methylphenol μg/kg ND ND 4,6‐Dinitro‐2‐Methylphenol μg/kg ND ND 4‐Chloro‐3‐Methylphenol μg/kg ND ND 4‐Nitrophenol μg/kg ND ND Pentachlorophenol μg/kg ND ND Phenols Phenol μg/kg ND ND Bis(2‐Ethylhexyl) Phthalate μg/kg ND ND Butyl Benzyl Phthalate μg/kg ND ND Diethyl Phthalate μg/kg ND ND Dimethyl Phthalate μg/kg ND ND Di‐n‐Butyl Phthalate μg/kg ND ND Phthalates Di‐n‐Octyl Phthalate μg/kg ND ND PCB003 μg/kg ND ND PCB005/008 μg/kg ND ND PCB015 μg/kg ND ND PCB018 μg/kg ND ND PCB027 μg/kg ND ND PCB028 μg/kg ND ND PCB029 μg/kg ND ND PCB031 μg/kg ND ND PCB033 μg/kg ND ND PCB037 μg/kg ND ND PCB044 μg/kg ND ND PCB049 μg/kg ND ND PCB052 μg/kg ND ND PCB056 μg/kg ND ND PCB060 μg/kg ND ND PCB064 μg/kg ND ND PCB066 μg/kg ND ND PCB070 μg/kg ND ND PCB074 μg/kg ND ND PCB077 μg/kg ND ND PCB081 μg/kg ND ND PCB087 μg/kg ND ND PCB095 μg/kg ND ND PCB097 μg/kg ND ND PCB099 μg/kg ND ND PCB101 μg/kg ND ND PCB105 μg/kg ND ND PCB110 μg/kg ND ND PCB114 μg/kg ND ND PCB118 μg/kg ND ND PCB119 μg/kg ND ND PCB123 μg/kg ND ND PCB126 μg/kg ND ND PCB128 μg/kg ND ND PCB132/153 μg/kg ND ND PCBs PCB137 μg/kg ND ND Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 11 Table 5. Sediment chemistry results (continued). Compound Parameter Units ERL ERM L‐Comp B‐Comp PCB138/158 μg/kg ND ND PCB141 μg/kg ND ND PCB146 μg/kg ND ND PCB149 μg/kg ND ND PCB151 μg/kg ND ND PCB156 μg/kg ND ND PCB157 μg/kg ND ND PCB167 μg/kg ND ND PCB168 μg/kg ND ND PCB169 μg/kg ND ND PCB170 μg/kg ND ND PCB174 μg/kg ND ND PCB177 μg/kg ND ND PCB180 μg/kg ND ND PCB183 μg/kg ND ND PCB184 μg/kg ND ND PCB187 μg/kg ND ND PCB189 μg/kg ND ND PCB194 μg/kg ND ND PCB195 μg/kg ND ND PCB198 μg/kg ND ND PCB199 μg/kg ND ND PCB200 μg/kg ND ND PCB201 μg/kg ND ND PCB203 μg/kg ND ND PCB206 μg/kg ND ND PCB209 μg/kg ND ND PCBs Total PCB Congeners μg/kg 22.7 180 ND ND Notes: L‐Comp = composite sample from L‐1, L‐2, and L‐3 B‐Comp = composite sample from B‐2 and B‐3 All results reported as dry weight. Bold Text – Exceeds ERL Bold and Underlined Text – Exceeds ERM ND = not detected above the reporting limit. Some analytes are reported that were detected at a concentration below the reporting limit and above the laboratory method detection limit. See Eurofins report in Appendix C for all estimated values. mg/kg ‐ milligram per kilogram μg/kg ‐ micrograms per kilogram ERL ‐ Effects Range Low ‐ ERM ‐ Effects Range Median DDT ‐ dichlorodiphenyltrichloroethane PAH ‐ polycyclic aromatic hydrocarbons PCB ‐ polychlorinated biphenyls Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 12 5.0 DISCUSSION Sediments in the maintenance dredging area have accumulated over a very short time period from high‐energy littoral sand sources. Sediment testing has regularly indicated that dredged materials have very high sand fractions and very low TOC (Table 4). Sediments of this character typically do not retain contaminants; and thus, there was no reason to suspect contamination of the maintenance dredging area. Chemical analyses performed in 2017 support this conclusion. There were very few chemicals of concern detected within sediments collected from the samples, and all were detected at very low values or not detected (Table 5). All analytes were detected below their respective ERL guideline values. The grain size distribution data indicate that sediments of the proposed beach receiving sites are compatible with those from the lagoon (Table 6). It was expected that the test results for the lagoon sediments and the beach sites would be similar due to the fact that the primary source of sediment in the lagoon is the littoral sand that is trapped within the lagoon. Table 6. Historical grain size results (mm). Sample Location 2017 2014 2010 2008 2006 2002 2000 1997 1995 L1 0.62 0.45 0.32 0.424 0.237 0.148 0.178 0.195 0.158 L2 0.47 0.37 0.28 0.300 0.251 0.173 0.175 0.198 0.148 L3 0.64 0.27 0.23 0.233 0.165 0.123 0.149 0.124 0.168 Average 0.58 0.36 0.28 0.32 0.22 0.15 0.17 0.17 0.16 B1 0.53 0.35 0.24 0.374 0.576 0.317 0.289 ‐ 0.174 B2 0.42 0.38 0.46 0.275 0.207 0.221 0.276 0.214 0.194 B3 0.43 0.26 0.27 0.270 0.193 0.18 0.157 0.199 0.201 Average 0.42 0.33 0.31 0.31 0.33 0.24 0.24 0.21 0.19 5.1 SUITABILITY RECOMMENDATIONS Dredged material from the Agua Hedionda Lagoon shoal is recommended for beach nourishment based on the following results: High percentage of medium to coarse grained sand compatible with existing receiver sites. Low concentrations of chemical analytes in sediments with no chemical analytes above ERL guideline values. Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 13 6.0 REFERENCES American Society for Testing and Materials (ASTM). 1967. Standard Methods for Grain‐Size Analysis of Soils. ASTM Designation D422‐ 63, Part II. Buchman, M.F. 2008. NOAA Screening Quick Reference Tables, NOAA OR&R Report 08‐1, Seattle WA, Office of Response and Restoration Division, National Oceanic and Atmospheric Administration, 34 pages. Long, E.R., D.L. MacDonald, S.L. Smith, and F.D. Calder. 1995. Incidence of Adverse Biological Effects within Ranges of Chemical Concentration in Marine and Estuarine Sediments. Environmental Management 19 (1): 81‐97. MEC. 2002. Agua Hedionda Lagoon, Field investigations for outer lagoon dredging. Submitted to Cabrillo Power, October 2002. MEC. 2000. Agua Hedionda Lagoon, Field investigations for outer lagoon dredging. Submitted to Cabrillo Power, September 2000. MEC. 1997. Agua Hedionda Lagoon, Field investigations for middle lagoon dredging. Submitted to SDG&E, April 1997. MEC. 1995. SDG&E Encina Power Plant, Agua Hedionda Lagoon dredge sediment analysis. Submitted to SDG&E, June 1995. MEC. 1993. Field investigations for lagoon dredging. Submitted to SDG&E, November 1993. MEC‐Weston, Inc. 2004. Cabrillo Power 1 LLC Agua Hedionda Lagoon Field Investigations for Outer Lagoon Dredging, Data Report November 2004. Merkel & Associates, Inc. (M&A). 2017. Cabrillo Power I LLC, Agua Hedionda Lagoon Outer Lagoon Flood Shoal Maintenance Dredging Sediment Sampling And Analysis Plan, ACOE #2001‐ 00328‐RRS. December 2017. Merkel & Associates, Inc. (M&A). 2014. Cabrillo Power I LLC, Agua Hedionda Lagoon Outer Lagoon Flood Shoal Maintenance Dredging Sediment Characterization Report. November 2014. Merkel & Associates, Inc. (M&A). 2010. Cabrillo Power I LLC, Agua Hedionda Lagoon Outer Lagoon Flood Shoal Maintenance Dredging Sediment Sampling And Analysis Plan, ACOE #2001100328‐SKB. November 2010. Merkel & Associates, Inc. (M&A). 2008. Cabrillo Power I LLC, Agua Hedionda Lagoon Outer Lagoon Flood Shoal Maintenance Dredging Sediment Characterization Report. December 2008. United States Environmental Protection Agency (USEPA). 1986‐1996. Test Methods for Evaluating Solid Waste: Physical/Chemical Methods. Revision 3 (November 1986), as amended by Agua Hedionda Lagoon Sediment Characterization Report January 2018 Merkel & Associates, Inc. #14‐051‐06 14 Updates I (July 1992), II (September 1994), IIA (August 1993), IIB (January 95), and III (December 96). SW‐846. United States Environmental Protection Agency (USEPA)/U.S. Army Corps of Engineers (USACE). 1998. Evaluation of Dredged Material Proposed for Discharge in Waters of the U.S., Testing Manual: Inland Testing Manual. EPA Reference 823‐B‐98‐004. February 1998. USACE 1991 Weston, Inc. 2006. Cabrillo Power 1 LLC Agua Hedionda Lagoon Field Investigations for Outer Lagoon Dredging, Data Report. Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 APPENDIX A CORE LOGS Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 APPENDIX B CORE PHOTOGRAPHS Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 L‐1 L‐1 0 ft 5 ft Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 L‐2 0 ft 5 ft L‐2 Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 L‐3 4 ft 0 ft L‐3 Agua Hedionda Lagoon Sediment Characterization Report Merkel & Associates, Inc. #14‐051‐06 APPENDIX C LABORATORY DATA WORK ORDER NUMBER: 17-12-1724 Analytical Report For Client:Merkel & Associates Client Project Name:NRG 14-051-06 Attention:Lawrence Honma 5434 Ruffin Road San Diego, CA 92123-1313 Approved for release on by: Carla Hollowell Project Manager AIR SOIL WATER MARINE CHEMISTRY Eurofins Calscience, Inc. (Calscience) certifies that the test results provided in this report meet all NELAC requirements for parameters for which accreditation is required or available. Any exceptions to NELAC requirements are noted in the case narrative. The original report of subcontracted analyses, if any, is attached to this report. The results in this report are limited to the sample(s) tested and any reproduction thereof must be made in its entirety. The client or recipient of this report is specifically prohibited from making material changes to said report and, to the extent that such changes are made, Calscience is not responsible, legally or otherwise. The client or recipient agrees to indemnify Calscience for any defense to any litigation which may arise. Page 1 of 61 01/09/2018 Supplemental Report 1 The original report has been revised/corrected. Contents 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Client Project Name:NRG 14-051-06 Work Order Number:17-12-1724 1 Work Order Narrative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2 Sample Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 3 Client Sample Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3.1 EPA 9060A Total Organic Carbon (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3.2 SM 2540 B (M) Total Solids (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.3 Pyrethroids by EPA 8270D (M)/TQ/EI (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.4 EPA 6020 ICP/MS Metals (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.5 EPA 7471A Mercury (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.6 ASTM D4464 (M) Particle Size Laser (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.7 EPA 8081A Organochlorine Pesticides (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 3.8 EPA 8270C SIM (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 3.9 EPA 8270C SIM PCB Congeners (Solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4 Particle Size Summary - 17-12-1724. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 5 Quality Control Sample Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 5.1 MS/MSD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 5.2 PDS/PDSD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 5.3 Sample Duplicate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 5.4 LCS/LCSD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 6 Glossary of Terms and Qualifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 7 Chain-of-Custody/Sample Receipt Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 Page 2 of 61 Condition Upon Receipt: Samples were received under Chain-of-Custody (COC) on 12/20/17. They were assigned to Work Order 17-12-1724. Unless otherwise noted on the Sample Receiving forms all samples were received in good condition and within the recommended EPA temperature criteria for the methods noted on the COC. The COC and Sample Receiving Documents are integral elements of the analytical report and are presented at the back of the report. Holding Times: All samples were analyzed within prescribed holding times (HT) and/or in accordance with the Calscience Sample Acceptance Policy unless otherwise noted in the analytical report and/or comprehensive case narrative, if required. Any parameter identified in 40CFR Part 136.3 Table II that is designated as "analyze immediately" with a holding time of <= 15 minutes (40CFR-136.3 Table II, footnote 4), is considered a "field" test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. Quality Control: All quality control parameters (QC) were within established control limits except where noted in the QC summary forms or described further within this report. Subcontractor Information: Unless otherwise noted below (or on the subcontract form), no samples were subcontracted. Additional Comments: Air - Sorbent-extracted air methods (EPA TO-4A, EPA TO-10, EPA TO-13A, EPA TO-17): Analytical results are converted from mass/sample basis to mass/volume basis using client-supplied air volumes. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are always reported on a wet weight basis. The samples were analyzed or extracted outside the EPA Method recommended solid sample holding time for Pyrethroids. However, the samples were frozen after collection (prior to holding time expiration) at -18°C, and remained frozen until the laboratory was ready to prepare the samples for analysis. Eurofins Calscience, Inc. follows SWAMP criteria and the Puget Sound Protocol (USEPA/PSWQAT, 1997, Table 2) for holding times in sediment samples, which states holding times may be extended up to six months to one year (two years for metals) if stored frozen at -18°C after collection. Therefore, the sample results have not been flagged as exceeding the EPA Method recommended holding time. Work Order Narrative 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Work Order: 17-12-1724 Page 1 of 1 Return to ContentsPage 3 of 61 Sample Identification Lab Number Collection Date and Time Number of Containers Matrix AH L-1 17-12-1724-1 12/19/17 08:40 2 Sediment AH L-2 17-12-1724-2 12/19/17 09:15 2 Sediment AH L-3 17-12-1724-3 12/19/17 09:40 2 Sediment AH B-1 17-12-1724-4 12/19/17 13:30 2 Sediment AH B-2 17-12-1724-5 12/19/17 13:40 2 Sediment AH B-3 17-12-1724-6 12/19/17 13:50 2 Sediment AH L-Comp 17-12-1724-7 12/19/17 09:40 4 Sediment AH B-Comp 17-12-1724-8 12/19/17 13:50 4 Sediment Sample Summary 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Client:Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Work Order:17-12-1724 Project Name:NRG 14-051-06 PO Number: Date/Time Received: 12/20/17 18:45 Number of Containers: 20 Attn:Lawrence Honma Return to ContentsPage 4 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-1 17-12-1724-1-AA 12/19/17 08:40 Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.058 1.00 AH L-2 17-12-1724-2-AA 12/19/17 09:15 Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.062 1.00 AH L-3 17-12-1724-3-AA 12/19/17 09:40 Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic 0.14 0.059 1.00 AH B-1 17-12-1724-4-AA 12/19/17 13:30 Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.055 1.00 AH B-2 17-12-1724-5-AA 12/19/17 13:40 Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.056 1.00 AH B-3 17-12-1724-6-AA 12/19/17 13:50 Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.053 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Units:% Project: NRG 14-051-06 Page 1 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 5 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.059 1.00 AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.054 1.00 Method Blank 099-06-013-1783 N/A Solid TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.050 1.00 Method Blank 099-06-013-1785 N/A Solid TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 Parameter Result RL DF Qualifiers Carbon, Total Organic ND 0.050 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Units:% Project: NRG 14-051-06 Page 2 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 6 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-1 17-12-1724-1-A 12/19/17 08:40 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 86.2 0.100 1.00 AH L-2 17-12-1724-2-A 12/19/17 09:15 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 80.6 0.100 1.00 AH L-3 17-12-1724-3-A 12/19/17 09:40 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 84.6 0.100 1.00 AH B-1 17-12-1724-4-A 12/19/17 13:30 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 90.9 0.100 1.00 AH B-2 17-12-1724-5-A 12/19/17 13:40 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 88.6 0.100 1.00 AH B-3 17-12-1724-6-A 12/19/17 13:50 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 95.0 0.100 1.00 AH L-Comp 17-12-1724-7-A 12/19/17 09:40 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 84.5 0.100 1.00 AH B-Comp 17-12-1724-8-A 12/19/17 13:50 Sediment N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total 93.1 0.100 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:SM 2540 B (M) Units:% Project: NRG 14-051-06 Page 1 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 7 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-05-019-3900 N/A Solid N/A 12/21/17 12/21/17 17:00 H1221TSB1 Parameter Result RL DF Qualifiers Solids, Total ND 0.100 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:SM 2540 B (M) Units:% Project: NRG 14-051-06 Page 2 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 8 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-A 12/19/17 09:40 Sediment GCTQ 2 01/05/18 01/08/18 19:26 180105L09 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Allethrin ND 0.59 1.00 Bifenthrin ND 0.59 1.00 Cyfluthrin ND 0.59 1.00 Cypermethrin ND 0.59 1.00 Deltamethrin/Tralomethrin ND 0.59 1.00 Fenpropathrin ND 0.59 1.00 Fenvalerate/Esfenvalerate ND 0.59 1.00 Fluvalinate ND 0.59 1.00 Permethrin (cis/trans)ND 1.2 1.00 Phenothrin ND 0.59 1.00 Resmethrin/Bioresmethrin ND 0.59 1.00 Tetramethrin ND 0.59 1.00 lambda-Cyhalothrin ND 0.59 1.00 Surrogate Rec. (%)Control Limits Qualifiers Dibutylchlorendate 67 40-160 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270D (M)/TQ/EI Units:ug/kg Project: NRG 14-051-06 Page 1 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 9 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH B-Comp 17-12-1724-8-A 12/19/17 13:50 Sediment GCTQ 2 01/05/18 01/08/18 20:12 180105L09 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Allethrin ND 0.54 1.00 Bifenthrin ND 0.54 1.00 Cyfluthrin ND 0.54 1.00 Cypermethrin ND 0.54 1.00 Deltamethrin/Tralomethrin ND 0.54 1.00 Fenpropathrin ND 0.54 1.00 Fenvalerate/Esfenvalerate ND 0.54 1.00 Fluvalinate ND 0.54 1.00 Permethrin (cis/trans)ND 1.1 1.00 Phenothrin ND 0.54 1.00 Resmethrin/Bioresmethrin ND 0.54 1.00 Tetramethrin ND 0.54 1.00 lambda-Cyhalothrin ND 0.54 1.00 Surrogate Rec. (%)Control Limits Qualifiers Dibutylchlorendate 82 40-160 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270D (M)/TQ/EI Units:ug/kg Project: NRG 14-051-06 Page 2 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 10 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-14-403-141 N/A Solid GCTQ 2 01/05/18 01/08/18 18:40 180105L09 Parameter Result RL DF Qualifiers Allethrin ND 0.50 1.00 Bifenthrin ND 0.50 1.00 Cyfluthrin ND 0.50 1.00 Cypermethrin ND 0.50 1.00 Deltamethrin/Tralomethrin ND 0.50 1.00 Fenpropathrin ND 0.50 1.00 Fenvalerate/Esfenvalerate ND 0.50 1.00 Fluvalinate ND 0.50 1.00 Permethrin (cis/trans)ND 1.0 1.00 Phenothrin ND 0.50 1.00 Resmethrin/Bioresmethrin ND 0.50 1.00 Tetramethrin ND 0.50 1.00 lambda-Cyhalothrin ND 0.50 1.00 Surrogate Rec. (%)Control Limits Qualifiers Dibutylchlorendate 55 40-160 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270D (M)/TQ/EI Units:ug/kg Project: NRG 14-051-06 Page 3 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 11 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment ICP/MS 03 01/05/18 01/05/18 14:51 180104L02E Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Arsenic 0.631 0.118 1.00 Cadmium ND 0.118 1.00 Chromium 3.23 0.118 1.00 Copper 0.984 0.118 1.00 Lead 0.527 0.118 1.00 Nickel 1.23 0.118 1.00 Selenium 0.226 0.118 1.00 Silver ND 0.118 1.00 Zinc 10.8 1.18 1.00 AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment ICP/MS 03 01/05/18 01/05/18 14:54 180104L02E Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Arsenic 0.773 0.107 1.00 Cadmium ND 0.107 1.00 Chromium 2.53 0.107 1.00 Copper 0.878 0.107 1.00 Lead 0.573 0.107 1.00 Nickel 0.916 0.107 1.00 Selenium 0.265 0.107 1.00 Silver ND 0.107 1.00 Zinc 8.88 1.07 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3050B Method:EPA 6020 Units:mg/kg Project: NRG 14-051-06 Page 1 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 12 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-15-254-564 N/A Solid ICP/MS 03 01/04/18 01/08/18 15:51 180104L02E Parameter Result RL DF Qualifiers Arsenic ND 0.100 1.00 Cadmium ND 0.100 1.00 Chromium ND 0.100 1.00 Copper ND 0.100 1.00 Lead ND 0.100 1.00 Nickel ND 0.100 1.00 Selenium ND 0.100 1.00 Silver ND 0.100 1.00 Zinc ND 1.00 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3050B Method:EPA 6020 Units:mg/kg Project: NRG 14-051-06 Page 2 of 2 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 13 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment Mercury 07 01/04/18 01/05/18 13:52 180104L02E Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Mercury 0.0390 0.0229 1.00 AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment Mercury 07 01/04/18 01/05/18 14:00 180104L02E Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Mercury ND 0.0208 1.00 Method Blank 099-16-278-360 N/A Solid Mercury 07 01/04/18 01/04/18 17:34 180104L02E Parameter Result RL DF Qualifiers Mercury ND 0.0197 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 7471A Total Method:EPA 7471A Units:mg/kg Project: NRG 14-051-06 Page 1 of 1 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 14 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-1 17-12-1724-1-B 12/19/17 08:40 Sediment LPSA 1 N/A 12/21/17 15:51 Parameter Result Qualifiers Clay (less than 0.00391mm)ND Silt (0.00391 to 0.0625mm)0.10 Total Silt and Clay (0 to 0.0625mm)0.10 Very Fine Sand (0.0625 to 0.125mm)0.24 Fine Sand (0.125 to 0.25mm)3.09 Medium Sand (0.25 to 0.5mm)32.90 Coarse Sand (0.5 to 1mm)55.20 Very Coarse Sand (1 to 2mm)8.48 Gravel (greater than 2mm)ND AH L-2 17-12-1724-2-B 12/19/17 09:15 Sediment LPSA 1 N/A 12/21/17 16:03 Parameter Result Qualifiers Clay (less than 0.00391mm)0.23 Silt (0.00391 to 0.0625mm)0.22 Total Silt and Clay (0 to 0.0625mm)0.45 Very Fine Sand (0.0625 to 0.125mm)1.40 Fine Sand (0.125 to 0.25mm)18.59 Medium Sand (0.25 to 0.5mm)46.07 Coarse Sand (0.5 to 1mm)27.08 Very Coarse Sand (1 to 2mm)6.42 Gravel (greater than 2mm)ND AH L-3 17-12-1724-3-B 12/19/17 09:40 Sediment LPSA 1 N/A 12/21/17 16:16 Parameter Result Qualifiers Clay (less than 0.00391mm)0.18 Silt (0.00391 to 0.0625mm)0.27 Total Silt and Clay (0 to 0.0625mm)0.45 Very Fine Sand (0.0625 to 0.125mm)1.32 Fine Sand (0.125 to 0.25mm)8.99 Medium Sand (0.25 to 0.5mm)26.38 Coarse Sand (0.5 to 1mm)49.17 Very Coarse Sand (1 to 2mm)13.69 Gravel (greater than 2mm)ND Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:ASTM D4464 (M) Units:% Project: NRG 14-051-06 Page 1 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 15 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH B-1 17-12-1724-4-B 12/19/17 13:30 Sediment LPSA 1 N/A 12/21/17 16:23 Parameter Result Qualifiers Clay (less than 0.00391mm)0.20 Silt (0.00391 to 0.0625mm)0.18 Total Silt and Clay (0 to 0.0625mm)0.38 Very Fine Sand (0.0625 to 0.125mm)0.40 Fine Sand (0.125 to 0.25mm)8.36 Medium Sand (0.25 to 0.5mm)45.18 Coarse Sand (0.5 to 1mm)39.68 Very Coarse Sand (1 to 2mm)6.00 Gravel (greater than 2mm)ND AH B-2 17-12-1724-5-B 12/19/17 13:40 Sediment LPSA 1 N/A 12/21/17 16:31 Parameter Result Qualifiers Clay (less than 0.00391mm)0.24 Silt (0.00391 to 0.0625mm)0.22 Total Silt and Clay (0 to 0.0625mm)0.46 Very Fine Sand (0.0625 to 0.125mm)0.54 Fine Sand (0.125 to 0.25mm)17.51 Medium Sand (0.25 to 0.5mm)55.92 Coarse Sand (0.5 to 1mm)23.81 Very Coarse Sand (1 to 2mm)1.77 Gravel (greater than 2mm)ND AH B-3 17-12-1724-6-B 12/19/17 13:50 Sediment LPSA 1 N/A 12/21/17 16:39 Parameter Result Qualifiers Clay (less than 0.00391mm)0.25 Silt (0.00391 to 0.0625mm)0.36 Total Silt and Clay (0 to 0.0625mm)0.61 Very Fine Sand (0.0625 to 0.125mm)0.52 Fine Sand (0.125 to 0.25mm)11.29 Medium Sand (0.25 to 0.5mm)61.44 Coarse Sand (0.5 to 1mm)24.18 Very Coarse Sand (1 to 2mm)1.97 Gravel (greater than 2mm)ND Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:ASTM D4464 (M) Units:% Project: NRG 14-051-06 Page 2 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 16 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-D 12/19/17 09:40 Sediment LPSA 1 N/A 12/21/17 16:49 Parameter Result Qualifiers Clay (less than 0.00391mm)ND Silt (0.00391 to 0.0625mm)0.10 Total Silt and Clay (0 to 0.0625mm)0.10 Very Fine Sand (0.0625 to 0.125mm)0.93 Fine Sand (0.125 to 0.25mm)12.19 Medium Sand (0.25 to 0.5mm)37.38 Coarse Sand (0.5 to 1mm)40.68 Very Coarse Sand (1 to 2mm)8.72 Gravel (greater than 2mm)ND AH B-Comp 17-12-1724-8-D 12/19/17 13:50 Sediment LPSA 1 N/A 12/21/17 16:57 Parameter Result Qualifiers Clay (less than 0.00391mm)0.26 Silt (0.00391 to 0.0625mm)0.27 Total Silt and Clay (0 to 0.0625mm)0.53 Very Fine Sand (0.0625 to 0.125mm)0.70 Fine Sand (0.125 to 0.25mm)13.29 Medium Sand (0.25 to 0.5mm)54.45 Coarse Sand (0.5 to 1mm)26.57 Very Coarse Sand (1 to 2mm)4.46 Gravel (greater than 2mm)ND Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:ASTM D4464 (M) Units:% Project: NRG 14-051-06 Page 3 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 17 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment GC 44 12/29/17 01/03/18 15:26 171229L05 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Aldrin ND 1.2 1.00 Alpha-BHC ND 2.4 1.00 Beta-BHC ND 1.2 1.00 Delta-BHC ND 2.4 1.00 Gamma-BHC ND 1.2 1.00 Chlordane ND 12 1.00 Dieldrin ND 1.2 1.00 Trans-nonachlor ND 1.2 1.00 2,4'-DDD ND 1.2 1.00 2,4'-DDE ND 2.4 1.00 2,4'-DDT ND 1.2 1.00 4,4'-DDD ND 1.2 1.00 4,4'-DDE ND 1.2 1.00 4,4'-DDT ND 1.2 1.00 Endosulfan I ND 1.2 1.00 Endosulfan II ND 1.2 1.00 Endosulfan Sulfate ND 1.2 1.00 Endrin ND 1.2 1.00 Endrin Aldehyde ND 1.2 1.00 Endrin Ketone ND 1.2 1.00 Heptachlor ND 1.2 1.00 Heptachlor Epoxide ND 2.4 1.00 Methoxychlor ND 1.2 1.00 Toxaphene ND 24 1.00 Alpha Chlordane ND 1.2 1.00 Gamma Chlordane ND 2.4 1.00 Cis-nonachlor ND 1.2 1.00 Oxychlordane ND 1.2 1.00 Mirex ND 1.2 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,5,6-Tetrachloro-m-Xylene 89 25-145 Decachlorobiphenyl 101 24-168 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8081A Units:ug/kg Project: NRG 14-051-06 Page 1 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 18 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment GC 44 12/29/17 01/03/18 15:40 171229L05 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers Aldrin ND 1.1 1.00 Alpha-BHC ND 2.1 1.00 Beta-BHC ND 1.1 1.00 Delta-BHC ND 2.1 1.00 Gamma-BHC ND 1.1 1.00 Chlordane ND 11 1.00 Dieldrin ND 1.1 1.00 Trans-nonachlor ND 1.1 1.00 2,4'-DDD ND 1.1 1.00 2,4'-DDE ND 2.1 1.00 2,4'-DDT ND 1.1 1.00 4,4'-DDD ND 1.1 1.00 4,4'-DDE ND 1.1 1.00 4,4'-DDT ND 1.1 1.00 Endosulfan I ND 1.1 1.00 Endosulfan II ND 1.1 1.00 Endosulfan Sulfate ND 1.1 1.00 Endrin ND 1.1 1.00 Endrin Aldehyde ND 1.1 1.00 Endrin Ketone ND 1.1 1.00 Heptachlor ND 1.1 1.00 Heptachlor Epoxide ND 2.1 1.00 Methoxychlor ND 1.1 1.00 Toxaphene ND 21 1.00 Alpha Chlordane ND 1.1 1.00 Gamma Chlordane ND 2.1 1.00 Cis-nonachlor ND 1.1 1.00 Oxychlordane ND 1.1 1.00 Mirex ND 1.1 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,5,6-Tetrachloro-m-Xylene 96 25-145 Decachlorobiphenyl 104 24-168 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8081A Units:ug/kg Project: NRG 14-051-06 Page 2 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 19 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-12-858-510 N/A Solid GC 44 12/29/17 01/03/18 11:48 171229L05 Parameter Result RL DF Qualifiers Aldrin ND 1.0 1.00 Alpha-BHC ND 2.0 1.00 Beta-BHC ND 1.0 1.00 Delta-BHC ND 2.0 1.00 Gamma-BHC ND 1.0 1.00 Chlordane ND 10 1.00 Dieldrin ND 1.0 1.00 Trans-nonachlor ND 1.0 1.00 2,4'-DDD ND 1.0 1.00 2,4'-DDE ND 2.0 1.00 2,4'-DDT ND 1.0 1.00 4,4'-DDD ND 1.0 1.00 4,4'-DDE ND 1.0 1.00 4,4'-DDT ND 1.0 1.00 Endosulfan I ND 1.0 1.00 Endosulfan II ND 1.0 1.00 Endosulfan Sulfate ND 1.0 1.00 Endrin ND 1.0 1.00 Endrin Aldehyde ND 1.0 1.00 Endrin Ketone ND 1.0 1.00 Heptachlor ND 1.0 1.00 Heptachlor Epoxide ND 2.0 1.00 Methoxychlor ND 1.0 1.00 Toxaphene ND 20 1.00 Alpha Chlordane ND 1.0 1.00 Gamma Chlordane ND 2.0 1.00 Cis-nonachlor ND 1.0 1.00 Oxychlordane ND 1.0 1.00 Mirex ND 1.0 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,5,6-Tetrachloro-m-Xylene 86 25-145 Decachlorobiphenyl 98 24-168 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8081A Units:ug/kg Project: NRG 14-051-06 Page 3 of 3 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 20 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment GC/MS MM 12/30/17 01/04/18 18:53 171230L01 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers 1-Methylnaphthalene ND 12 1.00 2,4,5-Trichlorophenol ND 12 1.00 2,4,6-Trichlorophenol ND 12 1.00 2,4-Dichlorophenol ND 12 1.00 2,4-Dimethylphenol ND 590 1.00 2,4-Dinitrophenol ND 590 1.00 2-Chlorophenol ND 12 1.00 2-Methylnaphthalene ND 12 1.00 2-Methylphenol ND 12 1.00 2-Nitrophenol ND 590 1.00 3/4-Methylphenol ND 12 1.00 4,6-Dinitro-2-Methylphenol ND 590 1.00 4-Chloro-3-Methylphenol ND 12 1.00 4-Nitrophenol ND 590 1.00 Acenaphthene ND 12 1.00 Acenaphthylene ND 12 1.00 Anthracene ND 12 1.00 Benzo (a) Anthracene ND 12 1.00 Benzo (a) Pyrene ND 12 1.00 Benzo (b) Fluoranthene ND 12 1.00 Benzo (g,h,i) Perylene ND 12 1.00 Benzo (k) Fluoranthene ND 12 1.00 Bis(2-Ethylhexyl) Phthalate ND 59 1.00 Butyl Benzyl Phthalate ND 59 1.00 Chrysene ND 12 1.00 Di-n-Butyl Phthalate ND 59 1.00 Di-n-Octyl Phthalate ND 59 1.00 Dibenz (a,h) Anthracene ND 12 1.00 Diethyl Phthalate ND 59 1.00 Dimethyl Phthalate ND 59 1.00 Fluoranthene ND 12 1.00 Fluorene ND 12 1.00 Indeno (1,2,3-c,d) Pyrene ND 12 1.00 Naphthalene ND 12 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 1 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 21 of 61 Parameter Result RL DF Qualifiers Pentachlorophenol ND 590 1.00 Phenanthrene ND 12 1.00 Phenol ND 12 1.00 Pyrene ND 12 1.00 1,6,7-Trimethylnaphthalene ND 12 1.00 2,3,4,6-Tetrachlorophenol ND 12 1.00 2,6-Dichlorophenol ND 12 1.00 DCPA ND 12 1.00 Dibenzothiophene ND 12 1.00 Perthane ND 12 1.00 1-Methylphenanthrene ND 12 1.00 Benzo (e) Pyrene ND 12 1.00 Perylene ND 12 1.00 Biphenyl ND 12 1.00 2,6-Dimethylnaphthalene ND 12 1.00 Isophorone ND 590 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,6-Tribromophenol 78 32-143 2-Fluorobiphenyl 88 14-146 2-Fluorophenol 82 15-138 Nitrobenzene-d5 92 18-162 p-Terphenyl-d14 91 34-148 Phenol-d6 78 17-141 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 2 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 22 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment GC/MS MM 12/30/17 01/04/18 19:20 171230L01 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers 1-Methylnaphthalene ND 11 1.00 2,4,5-Trichlorophenol ND 11 1.00 2,4,6-Trichlorophenol ND 11 1.00 2,4-Dichlorophenol ND 11 1.00 2,4-Dimethylphenol ND 530 1.00 2,4-Dinitrophenol ND 530 1.00 2-Chlorophenol ND 11 1.00 2-Methylnaphthalene ND 11 1.00 2-Methylphenol ND 11 1.00 2-Nitrophenol ND 530 1.00 3/4-Methylphenol ND 11 1.00 4,6-Dinitro-2-Methylphenol ND 530 1.00 4-Chloro-3-Methylphenol ND 11 1.00 4-Nitrophenol ND 530 1.00 Acenaphthene ND 11 1.00 Acenaphthylene ND 11 1.00 Anthracene ND 11 1.00 Benzo (a) Anthracene ND 11 1.00 Benzo (a) Pyrene ND 11 1.00 Benzo (b) Fluoranthene ND 11 1.00 Benzo (g,h,i) Perylene ND 11 1.00 Benzo (k) Fluoranthene ND 11 1.00 Bis(2-Ethylhexyl) Phthalate ND 53 1.00 Butyl Benzyl Phthalate ND 53 1.00 Chrysene ND 11 1.00 Di-n-Butyl Phthalate ND 53 1.00 Di-n-Octyl Phthalate ND 53 1.00 Dibenz (a,h) Anthracene ND 11 1.00 Diethyl Phthalate ND 53 1.00 Dimethyl Phthalate ND 53 1.00 Fluoranthene ND 11 1.00 Fluorene ND 11 1.00 Indeno (1,2,3-c,d) Pyrene ND 11 1.00 Naphthalene ND 11 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 3 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 23 of 61 Parameter Result RL DF Qualifiers Pentachlorophenol ND 530 1.00 Phenanthrene ND 11 1.00 Phenol ND 11 1.00 Pyrene ND 11 1.00 1,6,7-Trimethylnaphthalene ND 11 1.00 2,3,4,6-Tetrachlorophenol ND 11 1.00 2,6-Dichlorophenol ND 11 1.00 DCPA ND 11 1.00 Dibenzothiophene ND 11 1.00 Perthane ND 11 1.00 1-Methylphenanthrene ND 11 1.00 Benzo (e) Pyrene ND 11 1.00 Perylene ND 11 1.00 Biphenyl ND 11 1.00 2,6-Dimethylnaphthalene ND 11 1.00 Isophorone ND 530 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,6-Tribromophenol 75 32-143 2-Fluorobiphenyl 80 14-146 2-Fluorophenol 75 15-138 Nitrobenzene-d5 83 18-162 p-Terphenyl-d14 86 34-148 Phenol-d6 74 17-141 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 4 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 24 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-14-256-202 N/A Solid GC/MS MM 12/30/17 01/04/18 17:08 171230L01 Parameter Result RL DF Qualifiers 1-Methylnaphthalene ND 10 1.00 2,4,5-Trichlorophenol ND 10 1.00 2,4,6-Trichlorophenol ND 10 1.00 2,4-Dichlorophenol ND 10 1.00 2,4-Dimethylphenol ND 500 1.00 2,4-Dinitrophenol ND 500 1.00 2-Chlorophenol ND 10 1.00 2-Methylnaphthalene ND 10 1.00 2-Methylphenol ND 10 1.00 2-Nitrophenol ND 500 1.00 3/4-Methylphenol ND 10 1.00 4,6-Dinitro-2-Methylphenol ND 500 1.00 4-Chloro-3-Methylphenol ND 10 1.00 4-Nitrophenol ND 500 1.00 Acenaphthene ND 10 1.00 Acenaphthylene ND 10 1.00 Anthracene ND 10 1.00 Benzo (a) Anthracene ND 10 1.00 Benzo (a) Pyrene ND 10 1.00 Benzo (b) Fluoranthene ND 10 1.00 Benzo (g,h,i) Perylene ND 10 1.00 Benzo (k) Fluoranthene ND 10 1.00 Bis(2-Ethylhexyl) Phthalate ND 50 1.00 Butyl Benzyl Phthalate ND 50 1.00 Chrysene ND 10 1.00 Di-n-Butyl Phthalate ND 50 1.00 Di-n-Octyl Phthalate ND 50 1.00 Dibenz (a,h) Anthracene ND 10 1.00 Diethyl Phthalate ND 50 1.00 Dimethyl Phthalate ND 50 1.00 Fluoranthene ND 10 1.00 Fluorene ND 10 1.00 Indeno (1,2,3-c,d) Pyrene ND 10 1.00 Naphthalene ND 10 1.00 Pentachlorophenol ND 500 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 5 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 25 of 61 Parameter Result RL DF Qualifiers Phenanthrene ND 10 1.00 Phenol ND 10 1.00 Pyrene ND 10 1.00 1,6,7-Trimethylnaphthalene ND 10 1.00 2,3,4,6-Tetrachlorophenol ND 10 1.00 2,6-Dichlorophenol ND 10 1.00 DCPA ND 10 1.00 Dibenzothiophene ND 10 1.00 Perthane ND 10 1.00 1-Methylphenanthrene ND 10 1.00 Benzo (e) Pyrene ND 10 1.00 Perylene ND 10 1.00 Biphenyl ND 10 1.00 2,6-Dimethylnaphthalene ND 10 1.00 Isophorone ND 500 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2,4,6-Tribromophenol 54 32-143 2-Fluorobiphenyl 67 14-146 2-Fluorophenol 64 15-138 Nitrobenzene-d5 74 18-162 p-Terphenyl-d14 68 34-148 Phenol-d6 68 17-141 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Units:ug/kg Project: NRG 14-051-06 Page 6 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 26 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH L-Comp 17-12-1724-7-AA 12/19/17 09:40 Sediment GC/MS HHH 12/28/17 01/02/18 17:49 171228L11 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers PCB003 ND 0.24 1.00 PCB005/008 ND 0.47 1.00 PCB015 ND 0.24 1.00 PCB018 ND 0.24 1.00 PCB027 ND 0.24 1.00 PCB028 ND 0.24 1.00 PCB029 ND 0.24 1.00 PCB031 ND 0.24 1.00 PCB033 ND 0.24 1.00 PCB037 ND 0.24 1.00 PCB044 ND 0.24 1.00 PCB049 ND 0.24 1.00 PCB052 ND 0.24 1.00 PCB056 ND 0.24 1.00 PCB060 ND 0.24 1.00 PCB064 ND 0.24 1.00 PCB066 ND 0.24 1.00 PCB070 ND 0.24 1.00 PCB074 ND 0.24 1.00 PCB077 ND 0.24 1.00 PCB081 ND 0.24 1.00 PCB087 ND 0.24 1.00 PCB095 ND 0.24 1.00 PCB097 ND 0.24 1.00 PCB099 ND 0.24 1.00 PCB101 ND 0.24 1.00 PCB105 ND 0.24 1.00 PCB110 ND 0.24 1.00 PCB114 ND 0.24 1.00 PCB118 ND 0.24 1.00 PCB119 ND 0.24 1.00 PCB123 ND 0.24 1.00 PCB126 ND 0.24 1.00 PCB128 ND 0.24 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 1 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 27 of 61 Parameter Result RL DF Qualifiers PCB132/153 ND 0.47 1.00 PCB137 ND 0.24 1.00 PCB138/158 ND 0.47 1.00 PCB141 ND 0.24 1.00 PCB146 ND 0.24 1.00 PCB149 ND 0.24 1.00 PCB151 ND 0.24 1.00 PCB156 ND 0.24 1.00 PCB157 ND 0.24 1.00 PCB167 ND 0.24 1.00 PCB168 ND 0.24 1.00 PCB169 ND 0.24 1.00 PCB170 ND 0.24 1.00 PCB174 ND 0.24 1.00 PCB177 ND 0.24 1.00 PCB180 ND 0.24 1.00 PCB183 ND 0.24 1.00 PCB184 ND 0.24 1.00 PCB187 ND 0.24 1.00 PCB189 ND 0.24 1.00 PCB194 ND 0.24 1.00 PCB195 ND 0.24 1.00 PCB198 ND 0.24 1.00 PCB199 ND 0.24 1.00 PCB200 ND 0.24 1.00 PCB201 ND 0.24 1.00 PCB203 ND 0.24 1.00 PCB206 ND 0.24 1.00 PCB209 ND 0.24 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2-Fluorobiphenyl 108 14-146 p-Terphenyl-d14 117 34-148 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 2 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 28 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID AH B-Comp 17-12-1724-8-AA 12/19/17 13:50 Sediment GC/MS HHH 12/28/17 01/02/18 18:13 171228L11 Comment(s):- Results are reported on a dry weight basis. Parameter Result RL DF Qualifiers PCB003 ND 0.21 1.00 PCB005/008 ND 0.43 1.00 PCB015 ND 0.21 1.00 PCB018 ND 0.21 1.00 PCB027 ND 0.21 1.00 PCB028 ND 0.21 1.00 PCB029 ND 0.21 1.00 PCB031 ND 0.21 1.00 PCB033 ND 0.21 1.00 PCB037 ND 0.21 1.00 PCB044 ND 0.21 1.00 PCB049 ND 0.21 1.00 PCB052 ND 0.21 1.00 PCB056 ND 0.21 1.00 PCB060 ND 0.21 1.00 PCB064 ND 0.21 1.00 PCB066 ND 0.21 1.00 PCB070 ND 0.21 1.00 PCB074 ND 0.21 1.00 PCB077 ND 0.21 1.00 PCB081 ND 0.21 1.00 PCB087 ND 0.21 1.00 PCB095 ND 0.21 1.00 PCB097 ND 0.21 1.00 PCB099 ND 0.21 1.00 PCB101 ND 0.21 1.00 PCB105 ND 0.21 1.00 PCB110 ND 0.21 1.00 PCB114 ND 0.21 1.00 PCB118 ND 0.21 1.00 PCB119 ND 0.21 1.00 PCB123 ND 0.21 1.00 PCB126 ND 0.21 1.00 PCB128 ND 0.21 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 3 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 29 of 61 Parameter Result RL DF Qualifiers PCB132/153 ND 0.43 1.00 PCB137 ND 0.21 1.00 PCB138/158 ND 0.43 1.00 PCB141 ND 0.21 1.00 PCB146 ND 0.21 1.00 PCB149 ND 0.21 1.00 PCB151 ND 0.21 1.00 PCB156 ND 0.21 1.00 PCB157 ND 0.21 1.00 PCB167 ND 0.21 1.00 PCB168 ND 0.21 1.00 PCB169 ND 0.21 1.00 PCB170 ND 0.21 1.00 PCB174 ND 0.21 1.00 PCB177 ND 0.21 1.00 PCB180 ND 0.21 1.00 PCB183 ND 0.21 1.00 PCB184 ND 0.21 1.00 PCB187 ND 0.21 1.00 PCB189 ND 0.21 1.00 PCB194 ND 0.21 1.00 PCB195 ND 0.21 1.00 PCB198 ND 0.21 1.00 PCB199 ND 0.21 1.00 PCB200 ND 0.21 1.00 PCB201 ND 0.21 1.00 PCB203 ND 0.21 1.00 PCB206 ND 0.21 1.00 PCB209 ND 0.21 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2-Fluorobiphenyl 108 14-146 p-Terphenyl-d14 115 34-148 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 4 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 30 of 61 Client Sample Number Lab Sample Number Date/Time Collected Matrix Instrument Date Prepared Date/Time Analyzed QC Batch ID Method Blank 099-16-418-282 N/A Solid GC/MS HHH 12/28/17 01/02/18 15:01 171228L11 Parameter Result RL DF Qualifiers PCB003 ND 0.20 1.00 PCB005/008 ND 0.40 1.00 PCB015 ND 0.20 1.00 PCB018 ND 0.20 1.00 PCB027 ND 0.20 1.00 PCB028 ND 0.20 1.00 PCB029 ND 0.20 1.00 PCB031 ND 0.20 1.00 PCB033 ND 0.20 1.00 PCB037 ND 0.20 1.00 PCB044 ND 0.20 1.00 PCB049 ND 0.20 1.00 PCB052 ND 0.20 1.00 PCB056 ND 0.20 1.00 PCB060 ND 0.20 1.00 PCB064 ND 0.20 1.00 PCB066 ND 0.20 1.00 PCB070 ND 0.20 1.00 PCB074 ND 0.20 1.00 PCB077 ND 0.20 1.00 PCB081 ND 0.20 1.00 PCB087 ND 0.20 1.00 PCB095 ND 0.20 1.00 PCB097 ND 0.20 1.00 PCB099 ND 0.20 1.00 PCB101 ND 0.20 1.00 PCB105 ND 0.20 1.00 PCB110 ND 0.20 1.00 PCB114 ND 0.20 1.00 PCB118 ND 0.20 1.00 PCB119 ND 0.20 1.00 PCB123 ND 0.20 1.00 PCB126 ND 0.20 1.00 PCB128 ND 0.20 1.00 PCB132/153 ND 0.40 1.00 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 5 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 31 of 61 Parameter Result RL DF Qualifiers PCB137 ND 0.20 1.00 PCB138/158 ND 0.40 1.00 PCB141 ND 0.20 1.00 PCB146 ND 0.20 1.00 PCB149 ND 0.20 1.00 PCB151 ND 0.20 1.00 PCB156 ND 0.20 1.00 PCB157 ND 0.20 1.00 PCB167 ND 0.20 1.00 PCB168 ND 0.20 1.00 PCB169 ND 0.20 1.00 PCB170 ND 0.20 1.00 PCB174 ND 0.20 1.00 PCB177 ND 0.20 1.00 PCB180 ND 0.20 1.00 PCB183 ND 0.20 1.00 PCB184 ND 0.20 1.00 PCB187 ND 0.20 1.00 PCB189 ND 0.20 1.00 PCB194 ND 0.20 1.00 PCB195 ND 0.20 1.00 PCB198 ND 0.20 1.00 PCB199 ND 0.20 1.00 PCB200 ND 0.20 1.00 PCB201 ND 0.20 1.00 PCB203 ND 0.20 1.00 PCB206 ND 0.20 1.00 PCB209 ND 0.20 1.00 Surrogate Rec. (%)Control Limits Qualifiers 2-Fluorobiphenyl 122 14-146 p-Terphenyl-d14 120 34-148 Analytical Report 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Units:ug/kg Project: NRG 14-051-06 Page 6 of 6 RL: Reporting Limit. DF: Dilution Factor. MDL: Method Detection Limit.Return to ContentsPage 32 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 1 of 8 Mean Depth Grain Size ft mm 0.618 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 8.48 55.20 32.90 3.09 0.24 0.10 0.00 0.10 V 3.0 Sample ID Description AH L-1 Coarse Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 33 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 2 of 8 Mean Depth Grain Size ft mm 0.474 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 6.42 27.08 46.07 18.59 1.40 0.22 0.23 0.45 V 3.0 Sample ID Description AH L-2 Medium Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 34 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 3 of 8 Mean Depth Grain Size ft mm 0.640 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 13.69 49.17 26.38 8.99 1.32 0.27 0.18 0.45 V 3.0 Sample ID Description AH L-3 Coarse Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 35 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 4 of 8 Mean Depth Grain Size ft mm 0.531 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 6.00 39.68 45.18 8.36 0.40 0.18 0.20 0.38 V 3.0 Sample ID Description AH B-1 Coarse Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 36 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 5 of 8 Mean Depth Grain Size ft mm 0.416 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 1.77 23.81 55.92 17.51 0.54 0.22 0.24 0.46 V 3.0 Sample ID Description AH B-2 Medium Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 37 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 6 of 8 Mean Depth Grain Size ft mm 0.426 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 1.97 24.18 61.44 11.29 0.52 0.36 0.25 0.61 V 3.0 Sample ID Description AH B-3 Medium Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 38 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 7 of 8 Mean Depth Grain Size ft mm 0.561 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 8.72 40.68 37.38 12.19 0.93 0.10 0.00 0.10 V 3.0 Sample ID Description AH L-Comp Coarse Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 39 of 61 PARTICLE SIZE SUMMARY (ASTM D422 / D4464M) Merkel & Associates Date Sampled:12/19/17 Date Received:12/20/17 Work Order No:17-12-1724 Date Analyzed:12/21/17 Method:ASTM D4464M Project:NRG 14-051-06 Page 8 of 8 Mean Depth Grain Size ft mm 0.466 Very Very Total Total Coarse Coarse Medium Fine Fine Silt & Gravel Sand Sand Sand Sand Sand Silt Clay Clay 0.00 4.46 26.57 54.45 13.29 0.70 0.27 0.26 0.53 V 3.0 Sample ID Description AH B-Comp Medium Sand Particle Size Distribution, wt by percent 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Return to ContentsPage 40 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 17-12-1510-1 Sample Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCS1 17-12-1510-1 Matrix Spike Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCS1 17-12-1510-1 Matrix Spike Duplicate Sediment TOC 10 12/30/17 12/30/17 18:52 H1230TOCS1 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Carbon, Total Organic 1.139 3.000 4.312 106 4.344 107 75-125 1 0-25 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Project: NRG 14-051-06 Page 1 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 41 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 17-12-1901-19 Sample Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCS1 17-12-1901-19 Matrix Spike Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCS1 17-12-1901-19 Matrix Spike Duplicate Sediment TOC 10 01/04/18 01/04/18 17:07 I0104TOCS1 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Carbon, Total Organic 0.6910 3.000 3.878 106 3.887 107 75-125 0 0-25 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Project: NRG 14-051-06 Page 2 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 42 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number AH L-Comp Sample Sediment GCTQ 2 01/05/18 01/08/18 19:26 180105S09 AH L-Comp Matrix Spike Sediment GCTQ 2 01/05/18 01/08/18 20:59 180105S09 AH L-Comp Matrix Spike Duplicate Sediment GCTQ 2 01/05/18 01/08/18 21:45 180105S09 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Allethrin ND 5.000 3.327 67 2.415 48 10-148 32 0-30 4 Bifenthrin ND 5.000 4.215 84 3.398 68 26-128 21 0-30 Cyfluthrin ND 5.000 3.041 61 1.942 39 10-131 44 0-30 4 Cypermethrin ND 5.000 3.217 64 2.095 42 10-136 42 0-30 4 Deltamethrin/Tralomethrin ND 5.000 3.610 72 2.468 49 13-190 38 0-30 4 Fenpropathrin ND 5.000 4.157 83 2.852 57 10-148 37 0-30 4 Fenvalerate/Esfenvalerate ND 5.000 3.931 79 2.511 50 10-149 44 0-30 4 Fluvalinate ND 5.000 0.7490 15 0.4349 9 10-121 53 0-30 3,4 Permethrin (cis/trans)ND 5.000 4.657 93 3.424 68 45-123 31 0-30 4 Phenothrin ND 5.000 3.814 76 3.313 66 45-165 14 0-30 Resmethrin/Bioresmethrin ND 5.000 4.171 83 3.817 76 38-164 9 0-30 Tetramethrin ND 5.000 4.414 88 3.593 72 15-153 21 0-30 lambda-Cyhalothrin ND 5.000 2.505 50 2.040 41 10-123 20 0-30 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270D (M)/TQ/EI Project: NRG 14-051-06 Page 3 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 43 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 18-01-0168-1 Sample Solid ICP/MS 03 01/04/18 01/05/18 11:23 180104S02 18-01-0168-1 Matrix Spike Solid ICP/MS 03 01/04/18 01/05/18 11:13 180104S02 18-01-0168-1 Matrix Spike Duplicate Solid ICP/MS 03 01/04/18 01/05/18 11:16 180104S02 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Arsenic 8.137 25.00 32.35 97 32.33 97 72-132 0 0-13 Cadmium ND 25.00 27.97 112 27.87 111 85-121 0 0-12 Chromium 23.30 25.00 49.22 104 47.60 97 20-182 3 0-15 Copper 47.58 25.00 65.11 70 62.78 61 25-157 4 0-22 Lead 85.19 25.00 115.3 121 113.6 114 62-134 2 0-23 Nickel 17.17 25.00 44.06 108 41.91 99 46-154 5 0-15 Selenium ND 25.00 26.94 108 26.45 106 54-132 2 0-14 Silver ND 12.50 13.44 108 13.37 107 78-126 1 0-15 Zinc 299.0 25.00 279.9 4X 275.8 4X 23-173 4X 0-18 Q Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3050B Method:EPA 6020 Project: NRG 14-051-06 Page 4 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 44 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 17-12-2109-14 Sample Solid Mercury 07 01/04/18 01/04/18 17:38 180104S02 17-12-2109-14 Matrix Spike Solid Mercury 07 01/04/18 01/04/18 17:41 180104S02 17-12-2109-14 Matrix Spike Duplicate Solid Mercury 07 01/04/18 01/04/18 17:43 180104S02 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Mercury ND 0.8350 0.7364 88 0.7634 91 71-137 4 0-14 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 7471A Total Method:EPA 7471A Project: NRG 14-051-06 Page 5 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 45 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 17-12-1901-29 Sample Sediment GC 44 12/29/17 01/03/18 13:14 171229S05 17-12-1901-29 Matrix Spike Sediment GC 44 12/29/17 01/03/18 12:31 171229S05 17-12-1901-29 Matrix Spike Duplicate Sediment GC 44 12/29/17 01/03/18 12:45 171229S05 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers Aldrin ND 5.000 4.703 94 4.334 87 50-135 8 0-25 Alpha-BHC ND 5.000 5.229 105 4.888 98 50-135 7 0-25 Beta-BHC ND 5.000 5.328 107 5.057 101 50-135 5 0-25 Delta-BHC ND 5.000 4.803 96 4.541 91 50-135 6 0-25 Gamma-BHC ND 5.000 4.545 91 4.264 85 50-135 6 0-25 Dieldrin ND 5.000 5.231 105 4.960 99 50-135 5 0-25 4,4'-DDD ND 5.000 6.201 124 5.814 116 50-135 6 0-25 4,4'-DDE ND 5.000 6.190 124 5.903 118 50-135 5 0-25 4,4'-DDT ND 5.000 7.313 146 6.947 139 50-135 5 0-25 3 Endosulfan I ND 5.000 5.361 107 5.015 100 50-135 7 0-25 Endosulfan II ND 5.000 4.888 98 4.650 93 50-135 5 0-25 Endosulfan Sulfate ND 5.000 6.412 128 6.261 125 50-135 2 0-25 Endrin ND 5.000 6.050 121 5.784 116 50-135 4 0-25 Endrin Aldehyde ND 5.000 3.300 66 3.248 65 50-135 2 0-25 Endrin Ketone ND 5.000 4.722 94 4.561 91 50-135 3 0-25 Heptachlor ND 5.000 4.443 89 4.254 85 50-135 4 0-25 Heptachlor Epoxide ND 5.000 5.046 101 4.692 94 50-135 7 0-25 Methoxychlor ND 5.000 5.837 117 5.562 111 50-135 5 0-25 Alpha Chlordane ND 5.000 5.432 109 4.815 96 50-135 12 0-25 Gamma Chlordane ND 5.000 6.154 123 5.959 119 50-135 3 0-25 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8081A Project: NRG 14-051-06 Page 6 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 46 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number AH L-Comp Sample Sediment GC/MS MM 12/30/17 01/04/18 18:53 171230S01 AH L-Comp Matrix Spike Sediment GC/MS MM 12/30/17 01/04/18 18:01 171230S01 AH L-Comp Matrix Spike Duplicate Sediment GC/MS MM 12/30/17 01/04/18 18:27 171230S01 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers 2,4,6-Trichlorophenol ND 1000 1049 105 975.4 98 40-160 7 0-20 2,4-Dichlorophenol ND 1000 991.8 99 984.5 98 40-160 1 0-20 2-Methylphenol ND 1000 1024 102 1014 101 40-160 1 0-20 2-Nitrophenol ND 1000 928.3 93 932.8 93 40-160 0 0-20 4-Chloro-3-Methylphenol ND 1000 1036 104 1003 100 40-160 3 0-20 Acenaphthene ND 1000 987.6 99 957.8 96 40-160 3 0-20 Benzo (a) Pyrene ND 1000 1064 106 1001 100 17-163 6 0-20 Chrysene ND 1000 1013 101 948.9 95 17-168 7 0-20 Di-n-Butyl Phthalate ND 1000 983.8 98 965.8 97 40-160 2 0-20 Dimethyl Phthalate ND 1000 1021 102 987.4 99 40-160 3 0-20 Fluoranthene ND 1000 1018 102 979.1 98 26-137 4 0-20 Fluorene ND 1000 988.1 99 958.1 96 59-121 3 0-20 Naphthalene ND 1000 945.7 95 943.3 94 21-133 0 0-20 Phenanthrene ND 1000 1077 108 1021 102 54-120 5 0-20 Phenol ND 1000 990.3 99 985.3 99 40-160 1 0-20 Pyrene ND 1000 1027 103 979.2 98 6-156 5 0-46 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Project: NRG 14-051-06 Page 7 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 47 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number 17-12-1901-29 Sample Sediment GC/MS HHH 12/28/17 01/02/18 17:25 171228S11 17-12-1901-29 Matrix Spike Sediment GC/MS HHH 12/28/17 01/02/18 16:14 171228S11 17-12-1901-29 Matrix Spike Duplicate Sediment GC/MS HHH 12/28/17 01/02/18 16:37 171228S11 Parameter Sample Conc. Spike Added MS Conc. MS %Rec. MSD Conc. MSD %Rec. %Rec. CL RPD RPD CL Qualifiers PCB018 ND 50.00 35.71 71 33.69 67 50-150 6 0-25 PCB028 ND 50.00 42.16 84 39.94 80 50-150 5 0-25 PCB044 ND 50.00 38.33 77 36.48 73 50-150 5 0-25 PCB052 ND 50.00 38.23 76 36.18 72 50-150 5 0-25 PCB066 ND 50.00 45.74 91 43.05 86 50-150 6 0-25 PCB077 ND 50.00 40.85 82 38.43 77 50-150 6 0-25 PCB101 0.6047 50.00 40.03 79 37.35 73 50-150 7 0-25 PCB105 ND 50.00 43.29 87 40.04 80 50-150 8 0-25 PCB118 ND 50.00 42.79 86 39.67 79 50-150 8 0-25 PCB126 ND 50.00 40.27 81 38.27 77 50-150 5 0-25 PCB128 ND 50.00 39.06 78 36.84 74 50-150 6 0-25 PCB170 ND 50.00 41.95 84 40.16 80 50-150 4 0-25 PCB180 ND 50.00 44.77 90 41.36 83 50-150 8 0-25 PCB187 0.3461 50.00 43.96 87 40.31 80 50-150 9 0-25 PCB195 ND 50.00 35.90 72 34.11 68 50-150 5 0-25 PCB206 ND 50.00 40.28 81 38.18 76 50-150 5 0-25 PCB209 ND 50.00 33.31 67 31.89 64 50-150 4 0-25 Quality Control - Spike/Spike Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Project: NRG 14-051-06 Page 8 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 48 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed PDS/PDSD Batch Number 18-01-0168-1 Sample Solid ICP/MS 03 01/04/18 00:00 01/05/18 11:23 180104S02 18-01-0168-1 PDS Solid ICP/MS 03 01/04/18 00:00 01/05/18 11:18 180104S02 Parameter Sample Conc.Spike Added PDS Conc.PDS %Rec.%Rec. CL Qualifiers Arsenic 8.137 25.00 33.50 101 75-125 Cadmium ND 25.00 26.96 108 75-125 Chromium 23.30 25.00 49.97 107 75-125 Copper 47.58 25.00 71.56 96 75-125 Lead 85.19 25.00 111.1 103 75-125 Nickel 17.17 25.00 41.92 99 75-125 Selenium ND 25.00 27.12 108 75-125 Silver ND 12.50 13.83 111 75-125 Zinc 299.0 25.00 337.7 4X 75-125 Q Quality Control - PDS 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3050B Method:EPA 6020 Project: NRG 14-051-06 Page 1 of 1 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 49 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed Duplicate Batch Number AH L-1 Sample Sediment N/A 12/21/17 00:00 12/21/17 17:00 H1221TSD1 AH L-1 Sample Duplicate Sediment N/A 12/21/17 00:00 12/21/17 17:00 H1221TSD1 Parameter Sample Conc.DUP Conc.RPD RPD CL Qualifiers Solids, Total 86.20 86.30 0 0-10 Quality Control - Sample Duplicate 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:SM 2540 B (M) Project: NRG 14-051-06 Page 1 of 1 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 50 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number 099-06-013-1783 LCS Solid TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 099-06-013-1783 LCSD Solid TOC 10 12/30/17 12/30/17 18:52 H1230TOCL1 Parameter Spike Added LCS Conc.LCS %Rec. LCSD Conc.LCSD %Rec. %Rec. CL RPD RPD CL Qualifiers Carbon, Total Organic 0.6000 0.7175 120 0.7016 117 80-120 2 0-20 Quality Control - LCS/LCSD 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Project: NRG 14-051-06 Page 1 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 51 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number 099-06-013-1785 LCS Solid TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 099-06-013-1785 LCSD Solid TOC 10 01/04/18 01/04/18 17:07 I0104TOCL1 Parameter Spike Added LCS Conc.LCS %Rec. LCSD Conc.LCSD %Rec. %Rec. CL RPD RPD CL Qualifiers Carbon, Total Organic 0.6000 0.6490 108 0.6417 107 80-120 1 0-20 Quality Control - LCS/LCSD 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:N/A Method:EPA 9060A Project: NRG 14-051-06 Page 2 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 52 of 61 Total number of LCS compounds: 13 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 099-14-403-141 LCS Solid GCTQ 2 01/05/18 01/08/18 17:54 180105L09 Parameter Spike Added Conc. Recovered LCS %Rec.%Rec. CL ME CL Qualifiers Allethrin 5.000 3.526 71 10-148 0-171 Bifenthrin 5.000 3.953 79 26-128 9-145 Cyfluthrin 5.000 2.923 58 10-131 0-151 Cypermethrin 5.000 2.999 60 10-136 0-157 Deltamethrin/Tralomethrin 5.000 3.500 70 13-190 0-220 Fenpropathrin 5.000 3.678 74 10-148 0-171 Fenvalerate/Esfenvalerate 5.000 3.522 70 10-149 0-172 Fluvalinate 5.000 0.7282 15 10-121 0-140 Permethrin (cis/trans)5.000 4.203 84 45-123 32-136 Phenothrin 5.000 3.124 62 45-165 25-185 Resmethrin/Bioresmethrin 5.000 3.789 76 38-164 17-185 Tetramethrin 5.000 3.771 75 15-153 0-176 lambda-Cyhalothrin 5.000 2.321 46 10-123 0-142 Quality Control - LCS 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270D (M)/TQ/EI Project: NRG 14-051-06 Page 3 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 53 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 099-15-254-564 LCS Solid ICP/MS 03 01/04/18 01/05/18 11:03 180104L02E Parameter Spike Added Conc. Recovered LCS %Rec.%Rec. CL Qualifiers Arsenic 25.00 25.37 101 80-120 Cadmium 25.00 26.18 105 80-120 Chromium 25.00 26.88 108 80-120 Copper 25.00 25.61 102 80-120 Lead 25.00 26.40 106 80-120 Nickel 25.00 26.50 106 80-120 Selenium 25.00 26.38 106 80-120 Silver 12.50 13.53 108 80-120 Zinc 25.00 26.39 106 80-120 Quality Control - LCS 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3050B Method:EPA 6020 Project: NRG 14-051-06 Page 4 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 54 of 61 Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 099-16-278-360 LCS Solid Mercury 07 01/04/18 01/04/18 17:36 180104L02E Parameter Spike Added Conc. Recovered LCS %Rec.%Rec. CL Qualifiers Mercury 0.8350 0.8433 101 82-124 Quality Control - LCS 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 7471A Total Method:EPA 7471A Project: NRG 14-051-06 Page 5 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 55 of 61 Total number of LCS compounds: 20 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number 099-12-858-510 LCS Solid GC 44 12/29/17 01/03/18 12:03 171229L05 099-12-858-510 LCSD Solid GC 44 12/29/17 01/03/18 12:17 171229L05 Parameter Spike Added LCS Conc.LCS %Rec. LCSD Conc. LCSD %Rec. %Rec. CL ME CL RPD RPD CL Qualifiers Aldrin 5.000 4.945 99 4.750 95 50-135 36-149 4 0-25 Alpha-BHC 5.000 4.782 96 4.648 93 50-135 36-149 3 0-25 Beta-BHC 5.000 5.196 104 5.380 108 50-135 36-149 3 0-25 Delta-BHC 5.000 5.557 111 5.288 106 50-135 36-149 5 0-25 Gamma-BHC 5.000 4.863 97 4.736 95 50-135 36-149 3 0-25 Dieldrin 5.000 5.322 106 5.066 101 50-135 36-149 5 0-25 4,4'-DDD 5.000 5.509 110 5.215 104 50-135 36-149 5 0-25 4,4'-DDE 5.000 5.377 108 5.098 102 50-135 36-149 5 0-25 4,4'-DDT 5.000 6.036 121 5.638 113 50-135 36-149 7 0-25 Endosulfan I 5.000 5.511 110 5.256 105 50-135 36-149 5 0-25 Endosulfan II 5.000 6.133 123 5.781 116 50-135 36-149 6 0-25 Endosulfan Sulfate 5.000 5.422 108 5.017 100 50-135 36-149 8 0-25 Endrin 5.000 5.906 118 5.582 112 50-135 36-149 6 0-25 Endrin Aldehyde 5.000 2.847 57 2.596 52 50-135 36-149 9 0-25 Endrin Ketone 5.000 5.531 111 5.054 101 50-135 36-149 9 0-25 Heptachlor 5.000 5.304 106 5.135 103 50-135 36-149 3 0-25 Heptachlor Epoxide 5.000 5.076 102 4.841 97 50-135 36-149 5 0-25 Methoxychlor 5.000 6.126 123 5.587 112 50-135 36-149 9 0-25 Alpha Chlordane 5.000 5.133 103 4.951 99 50-135 36-149 4 0-25 Gamma Chlordane 5.000 4.989 100 4.741 95 50-135 36-149 5 0-25 Quality Control - LCS/LCSD 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8081A Project: NRG 14-051-06 Page 6 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 56 of 61 Total number of LCS compounds: 16 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number 099-14-256-202 LCS Solid GC/MS MM 12/30/17 01/04/18 17:35 171230L01 Parameter Spike Added Conc. Recovered LCS %Rec.%Rec. CL ME CL Qualifiers 2,4,6-Trichlorophenol 1000 857.6 86 40-160 20-180 2,4-Dichlorophenol 1000 860.6 86 40-160 20-180 2-Methylphenol 1000 1042 104 40-160 20-180 2-Nitrophenol 1000 774.3 77 40-160 20-180 4-Chloro-3-Methylphenol 1000 987.2 99 40-160 20-180 Acenaphthene 1000 953.6 95 48-108 38-118 Benzo (a) Pyrene 1000 1034 103 17-163 0-187 Chrysene 1000 989.3 99 17-168 0-193 Di-n-Butyl Phthalate 1000 1006 101 40-160 20-180 Dimethyl Phthalate 1000 972.3 97 40-160 20-180 Fluoranthene 1000 1019 102 26-137 8-156 Fluorene 1000 954.5 95 59-121 49-131 Naphthalene 1000 933.4 93 21-133 2-152 Phenanthrene 1000 1035 103 54-120 43-131 Phenol 1000 984.8 98 40-160 20-180 Pyrene 1000 1002 100 28-106 15-119 Quality Control - LCS 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM Project: NRG 14-051-06 Page 7 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 57 of 61 Total number of LCS compounds: 17 Total number of ME compounds: 0 Total number of ME compounds allowed: 1 LCS ME CL validation result: Pass Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number 099-16-418-282 LCS Solid GC/MS HHH 12/28/17 01/02/18 15:26 171228L11 099-16-418-282 LCSD Solid GC/MS HHH 12/28/17 01/02/18 15:50 171228L11 Parameter Spike Added LCS Conc.LCS %Rec. LCSD Conc. LCSD %Rec. %Rec. CL ME CL RPD RPD CL Qualifiers PCB018 50.00 48.44 97 43.33 87 24-132 6-150 11 0-28 PCB028 50.00 54.90 110 49.18 98 31-133 14-150 11 0-26 PCB044 50.00 51.70 103 46.90 94 36-120 22-134 10 0-28 PCB052 50.00 50.17 100 45.06 90 31-121 16-136 11 0-27 PCB066 50.00 62.44 125 56.16 112 43-139 27-155 11 0-25 PCB077 50.00 55.84 112 50.28 101 41-131 26-146 10 0-25 PCB101 50.00 53.80 108 48.13 96 37-121 23-135 11 0-27 PCB105 50.00 58.03 116 52.06 104 48-132 34-146 11 0-26 PCB118 50.00 56.82 114 51.26 103 46-136 31-151 10 0-25 PCB126 50.00 54.64 109 49.82 100 38-134 22-150 9 0-25 PCB128 50.00 53.96 108 48.41 97 40-130 25-145 11 0-26 PCB170 50.00 55.28 111 49.79 100 40-124 26-138 10 0-29 PCB180 50.00 59.67 119 53.56 107 41-143 24-160 11 0-26 PCB187 50.00 57.53 115 52.58 105 39-129 24-144 9 0-26 PCB195 50.00 48.63 97 44.23 88 44-128 30-142 9 0-28 PCB206 50.00 53.33 107 49.21 98 33-135 16-152 8 0-24 PCB209 50.00 43.48 87 39.07 78 29-137 11-155 11 0-29 Quality Control - LCS/LCSD 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Merkel & Associates 5434 Ruffin Road San Diego, CA 92123-1313 Date Received:12/20/17 Work Order:17-12-1724 Preparation:EPA 3541 Method:EPA 8270C SIM PCB Congeners Project: NRG 14-051-06 Page 8 of 8 RPD: Relative Percent Difference. CL: Control Limits Return to ContentsPage 58 of 61 Qualifiers Definition *See applicable analysis comment. <Less than the indicated value. >Greater than the indicated value. 1 Surrogate compound recovery was out of control due to a required sample dilution. Therefore, the sample data was reported without further clarification. 2 Surrogate compound recovery was out of control due to matrix interference. The associated method blank surrogate spike compound was in control and, therefore, the sample data was reported without further clarification. 3 Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was out of control due to suspected matrix interference. The associated LCS recovery was in control. 4 The MS/MSD RPD was out of control due to suspected matrix interference. 5 The PDS/PDSD or PES/PESD associated with this batch of samples was out of control due to suspected matrix interference. 6 Surrogate recovery below the acceptance limit. 7 Surrogate recovery above the acceptance limit. B Analyte was present in the associated method blank. BU Sample analyzed after holding time expired. BV Sample received after holding time expired. CI See case narrative. E Concentration exceeds the calibration range. ET Sample was extracted past end of recommended max. holding time. HD The chromatographic pattern was inconsistent with the profile of the reference fuel standard. HDH The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but heavier hydrocarbons were also present (or detected). HDL The sample chromatographic pattern for TPH matches the chromatographic pattern of the specified standard but lighter hydrocarbons were also present (or detected). J Analyte was detected at a concentration below the reporting limit and above the laboratory method detection limit. Reported value is estimated. JA Analyte positively identified but quantitation is an estimate. ME LCS Recovery Percentage is within Marginal Exceedance (ME) Control Limit range (+/- 4 SD from the mean). ND Parameter not detected at the indicated reporting limit. Q Spike recovery and RPD control limits do not apply resulting from the parameter concentration in the sample exceeding the spike concentration by a factor of four or greater. SG The sample extract was subjected to Silica Gel treatment prior to analysis. X % Recovery and/or RPD out-of-range. Z Analyte presence was not confirmed by second column or GC/MS analysis. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are reported on a wet weight basis. Any parameter identified in 40CFR Part 136.3 Table II that is designated as "analyze immediately" with a holding time of <= 15 minutes (40CFR-136.3 Table II, footnote 4), is considered a "field" test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. A calculated total result (Example: Total Pesticides) is the summation of each component concentration and/or, if "J" flags are reported, estimated concentration. Component concentrations showing not detected (ND) are summed into the calculated total result as zero concentrations. Glossary of Terms and Qualifiers 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 Work Order: 17-12-1724 Page 1 of 1 Return to ContentsPage 59 of 61 Return to ContentsPage 60 of 61 Return to ContentsPage 61 of 61