FINAL SEDIMENT CHARACTERIZATION STUDY—DECEMBER 2012 UPDATE DREDGING OF THE INTAKE FOREBAY STRUCTURE NRG LONG BEACH GENERATING STATION LONG BEACH HARBOR Submitted to: Port of Long Beach Environmental Planning Department 925 Harbor Plaza Long Beach, California 90802 Submitted by: AMEC Environment & Infrastructure, Inc. San Diego, California 92123 November 2013 Port of Long Beach Contract HD-7568 Job Task Number 1209 AMEC Project No. 1315100104
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FINAL SEDIMENT CHARACTERIZATION STUDY—DECEMBER 2012 UPDATE
DREDGING OF THE INTAKE FOREBAY STRUCTURE NRG LONG BEACH GENERATING STATION
LONG BEACH HARBOR
Submitted to: Port of Long Beach
Environmental Planning Department 925 Harbor Plaza
Long Beach, California 90802
Submitted by: AMEC Environment & Infrastructure, Inc.
San Diego, California 92123
November 2013
Port of Long Beach Contract HD-7568 Job Task Number 1209
AMEC Project No. 1315100104
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 TABLE OF CONTENTS
Page ACRONYMS AND ABBREVIATIONS .......................................................................................... iii 1.0 INTRODUCTION ............................................................................................................ 1-1
1.1 Project Description and Approach ...................................................................... 1-1 1.2 Site Description and History ............................................................................... 1-2
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 TABLE OF CONTENTS (Cont.)
Page LIST OF TABLES Table 2-1. Chemical Analyses of Sediment, Site Water, and Elutriate Samples ................. 2-8 Table 3-1. Sediment Core Collection Log ............................................................................ 3-3 Table 3-2. Grain Size Results Summary ............................................................................. 3-5 Table 3-3. Bulk Sediment Chemistry Results – Dry Weight ................................................ 3-6 Table 3-4. Bulk Sediment Chemistry Results – Wet Weight .............................................. 3-19 Table 3-5. Site Water and Elutriate Chemistry Test Results ............................................. 3-26 LIST OF FIGURES Figure 1-1. Site Vicinity, NRG Long Beach Generating Station ............................................ 1-3 Figure 1-2. NRG Long Beach Generating Station in Relation to the Middle Harbor
Redevelopment Project ...................................................................................... 1-5 Figure 2-1. Boring Locations, NRG Long Beach Generating Station .................................... 2-3 LIST OF APPENDICES APPENDIX A SEDIMENT CORE FIELD LOGS APPENDIX B SEDIMENT CORE PHOTOGRAPH LOGS APPENDIX C ORIGINAL CHEMISTRY AND GRAIN SIZE LABORATORY RESULTS W:\2013\Projects\10-151-00209 POLB - NRG\R0313-058.R1\R0313-058.R1 FINAL SedChar 12-12 Update.doc
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 ACRONYMS AND ABBREVIATIONS
µg/kg micrograms per kilogram µg/L micrograms per liter AMEC AMEC Environment & Infrastructure, Inc. ASTM American Society for Testing and Materials (now ASTM International) Calscience Calscience Environmental Laboratories, Inc. CCC criterion continuous concentration CCR California Code of Regulations CDF confined disposal facility CFR Code of Federal Regulations CMC criteria maximum concentration COC chain of custody COPC chemicals of potential concern CSTF Contaminated Sediment Task Force DDD dichlorodiphenyldiethane DDE dichlorodiphenylethylene DDT dichlorodiphenyltrichloroethane DMMT Dredged Material Management Team DI deionized DIPE diisopropyl ether EET effluent elutriate test ERL effects range-low ERM effects range-median ETBE ethyl-t-butyl ether ft feet/foot GPS Global Positioning System HPAH high-molecular-weight polycyclic aromatic hydrocarbon LCS laboratory control sample LCSD laboratory control sample duplicate m meter ME marginal exceedance MET modified elutriate test mg/kg milligrams per kilogram mg/L milligrams per liter MLLW mean lower low water MS matrix spike MSD matrix spike duplicate MTBE methyl-t-butyl ether N/A not applicable ND non-detect ng/L nanograms per liter NRG NRG Long Beach Generating Station
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ACRONYMS AND ABBREVIATIONS (Cont.) OD overdredge oz ounce PAH polycyclic aromatic hydrocarbon PCB polychlorinated biphenyl Port Port of Long Beach QA/QC quality assurance and quality control RPD relative percent difference RWQCB (Los Angeles) Regional Water Quality Control Board SAP Sampling and Analysis Plan SIM selected ion monitoring STLC soluble threshold limit concentration TAME tert-amyl-methyl ether TBA tert-butyl alcohol TCLP toxicity characteristic leaching procedure TOC total organic carbon TPH total petroleum hydrocarbon TRPH total recoverable petroleum hydrocarbons USACE United States Army Corps of Engineers USEPA United States Environmental Protection Agency UTM Upland Testing Manual WET waste extraction test
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 1.0 INTRODUCTION
1.1 Project Description and Approach
This document is the final report for a dredged material characterization study for the area within and around the seawater intake forebay structure at the NRG Long Beach Generating Station (NRG) located in the Port of Long Beach (Port). The Port is proposing to demolish a portion of the existing intake forebay structure, remove an existing submerged intake structure, and remove sediment within and around the structures as part of the demolition and removal activities. This improvement will facilitate better navigational maneuverability for ship traffic in the Port Back Channel. The NRG facility is located in Long Beach Harbor in Long Beach, California (Figure 1-1). The generating station is directly north of the Gerald Desmond Bridge; it is bordered by Pier S to the west and north, and by the Inner Harbor and Back Channel to the east. The current NRG intake forebay structure is outdated because intake water cooling pipes are no longer used at the facility. Before the intake structures are demolished, the harbor sediment that exists within and around the structures need to be characterized for proper disposal, then dredged and removed. The current depth of existing sediments within the intake forebay structure ranges from −33 to −43 feet below mean lower low water (MLLW). Sediment samples within the structure were collected to the dredge design depth of −52 feet (ft) MLLW plus a 2-foot overdredge (OD) allowance, for a total target sampling depth of −54 ft MLLW. In the area outside of the structure, samples were attempted to −54 ft MLLW, and when possible, deeper penetration was attempted to characterize the sediments in the resultant new (post-dredging) layer (Z-layer). The Port’s preferred placement option is beneficial reuse of the accumulated sediment from the intake forebay structure and the area outside the structure. If approved, the material may be used as fill within the nearby Middle Harbor Redevelopment Project (Figure 1-2). At the time of sampling, the sediment was planned to be placed at the Middle Harbor Confined Disposal Facility (CDF). The Port was issued an Individual Permit (No. 2004-01053-AOA) by the USACE and Waste Discharge Requirements (No. 09-204) by the RWQCB to construct and monitor the Middle Harbor CDF. Currently, however, the Middle Harbor CDF is full and no longer accepting additional material. Regardless, there is still a need for the NRG material to be placed as general Middle Harbor fill material, the exact location of which will be determined in the future based on other timelines of sediment dredging and disposal projects. If the NRG material cannot be placed in the Middle Harbor as slip fill, it will be dredged and placed on Pier S for dewatering and short-term storage before being disposed of at an approved upland facility. To assess suitability for placement in the Middle Harbor CDF or other Middle Harbor fill locations, the sediments and site water within the proposed dredge footprint at the NRG forebay intake structure were characterized in accordance with dredge material assessment methods published in the Evaluation of Dredged Material Proposed for Disposal at Island, Nearshore, and Upland Confined Disposal Facilities-Testing Manual (UTM) (USACE, 2003), and in
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 accordance with the Port of Long Beach Sediment Management Handbook for Dredge and Fill Projects (Anchor, 2011). Prior to initiating the dredged material collection and testing study, a project-specific Sampling and Analysis Plan (SAP) was submitted to the Port of Long Beach for review and approval in March 2012. The SAP was the framework for conducting the characterization studies necessary to determine whether the proposed dredged material would be suitable for placement at the Middle Harbor CDF or other Middle Harbor fill locations. The SAP was presented to the Dredged Material Management Team/Contaminated Sediment Task Force (DMMT/CSTF) at the DMMT/CSTF meeting of March 28, 2012. Because of the small amount of sediment being removed, the DMMT/CSTF declined to review the SAP prior to sampling. The purpose of this report is to provide information from a two-phase sediment characterization study at the facility in 2012. An initial sediment characterization was completed in April 2012 for sediment inside the NRG intake forebay structure. In December 2012, Port staff expanded the dredge footprint to include additional sediment around the structure and additional field work was conducted to collect samples within the expanded area.
1.2 Site Description and History
The NRG Generating Station (formerly known as the Long Beach Generating Station) has been in operation as an electric power generation and distribution facility since 1910, with a short period of non-activity in the early-2000s. The intake structure was previously used to take in seawater from the Back Channel for a cooling system used during turbine operations. Since 2005, a different source of cooling has been in use and the intake structure has not been in service. According to Port of Long Beach staff, accumulated sediment within the intake structure was last removed by NRG in 2004 (personal communication, Janna Watanabe, Port). However, no record of the chemical composition of the 2004 dredged material is available. NRG’s environmental consultant was contacted, but no historical sediment quality reports could be located.
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
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lvd
Pier S
NRG Long Beach Generating Station in relation to the Middle Harbor Redevelopment ProjectNRG Long Beach Generating Station
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2.0 METHODS AND MATERIALS
Sampling and analysis procedures for this study were designed to satisfy the testing requirements described in the UTM and the Port’s Sediment Management Handbook. These procedures were outlined in the project-specific SAP submitted to the Port in March 2012 (AMEC Environment & Infrastructure, Inc. [AMEC], 2012). The December 2012 expanded sampling was further detailed in the project-specific memo submitted to the Port in early December 2012. This section summarizes the approved methods used to characterize the sediment at the NRG facility and to determine its suitability for placement as fill in the Middle Harbor CDF or other Middle Harbor fill locations.
2.1 Sampling Design
To adequately characterize the dredge footprint of the NRG intake forebay structure and the surrounding area, core samples were collected to the established dredge allowance depth of −52 ft MLLW plus a 2-ft overdredge allowance (Figure 2-1). The final targeted sampling depth was −54 ft MLLW (or the depth of refusal). Coring locations within the proposed dredge footprint were positioned to provide adequate spatial coverage of the site, as well as to best represent the sediment quality characteristics of the locations from which the greatest volume of dredged material will be removed. Seven samples were collected from within the intake structure during the initial sediment sampling event conducted in April 2012. Samples were attempted to be collected at four locations outside the structure for the expanded sampling event in December 2012, but samples were successfully collected at only two of these four locations (Figure 2-1). Sample collection for both events was attempted to the same final depth (−54 ft MLLW); however, during the supplemental event, Z-layer sample collection (from −54 to −56 ft MLLW) was also attempted (discussed in more detail in Section 3.3).
2.2 Sediment Collection
Sediment collection followed the guidance provided in the United States Environmental Protection Agency’s (USEPA) Methods for Collection, Storage and Manipulation of Sediments for Chemical and Toxicological Analyses: Technical Manual (USEPA, 2001). AMEC personnel supervised the sediment collection program. Two methods were employed for the collection of sediments at the NRG facility. The April 2012 samples were collected using a skid-mounted rotary drill aboard a drilling barge operated by Gregg Drilling, who also provided all sampling equipment and operators. The December 2012 sediment samples were collected aboard a specialized marine sampling barge using a vibracore operated by TEG Oceanographic Services (TEG). TEG provided the sampling equipment and operators for the supplemental collection event. The following subsections describe the methods and procedures used to collect test sediments.
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2.2.1 Positioning
Sample collection stations were located using a hand-held Trimble Juno® SB device aboard the Gregg Drilling barge and the TEG barge. The Trimble has a global positioning accuracy of approximately ±2 to 5 ft (approximately 1 meter [m]). Spud anchors were used to stabilize the Gregg Drilling barge, and four-point rope lines were tied to the surrounding metal catwalk structure that borders the intake forebay structure to position the barge prior to spud deployment. Positioning on the TEG barge was secured by tying the collection vessel to the exterior of the catwalk fence structure. The actual sample collection coordinates were then recorded in the project-specific field log and a Global Positioning System (GPS) point was recorded on the GPS unit. All locations were sampled as described in the SAP (AMEC, 2012).
2.2.2 Sediment Core Sampling
The April 2012 sediment core samples were collected using a rotary drill on a CME-45C skid-mounted drill rig. The rotary drill was outfitted with a 2.5-inch CA modified split spoon that was used to collect the samples. Prior to each deployment, a set of three clean brass rings was inserted into the split spoon to function as a core liner and to assist in sediment extrusion. The rotary drill assembly was lowered by adding drill rod casings at 5-foot segments until the drill was at the bay bottom. Pneumatic pressure was applied and the split spoon was advanced until the next 5-foot segment of drill rod casing was needed. This was continued until the characterization depth was met. Sediment core penetration depths were calculated by using a tape measure to determine the remaining length of the drill rod casing that was still visible. This length was added to the known number and length of the other drill rod casings to determine the final sediment core penetration depth. Tide and water depths at the time of sampling were also considered in the calculation. After retrieval, the sediment core was extruded onto a clean plastic sheet on the drilling barge and visually examined and photographed. These rotary drill samples inside the structure have sample IDs of NRG-1, NRG-2, etc. The December 2012 sediment samples were collected using a vibracore. Core samples were collected using a vibracore equipped with a 4-inch-diameter aluminum tube connected to a stainless steel core catcher (cutter and catcher). Prior to each deployment, a clean polyethylene plastic sleeve was inserted into the tube to encapsulate the core and minimize the potential for cross contamination. The vibracore unit was lowered to the surface of the sediment and powered on to penetrate the sediment until refusal was met. These vibracore samples outside of the catwalk have sample IDs of NRG-A and NRG-B. Detailed sediment sample observations (color, odor, stratification, etc.), as well as core photograph logs were recorded and are included as Appendices A and B, respectively.
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The following information was recorded in a project-specific field log:
• Date and time of collection • Sample identification code • Sampling location (latitude and longitude within a 3-m accuracy) • Water depth (±0.1 ft) • Mudline elevation • Tidal stage • Climatic conditions • Sampling method and any problems encountered (e.g., debris) • Maximum penetration • Core length • Description of the material type obtained in the samples • Description of any vertical stratification in each core • Description of sediment subsampling methods • Photographic record of each core
2.2.3 Rotary Drill Core Refusal
The rotary drill collection method served two purposes: (a) to characterize sediment for disposal and (b) to help determine the elevation of the concrete base of the NRG intake forebay structure inside the catwalk. Prior to the field work, existing engineering schematic drawings showed the concrete base of the forebay intake structure to be continuous on both the north and south side of the intake area within the catwalk. However, initial field borings revealed no concrete base on the south side of the intake structure. While on site, a new engineering schematic was discovered by NRG staff that had a note showing that the concrete base was only on the north side of the intake structure, which confirmed what had been observed in the field. As a result, refusal was met at NRG-01, NRG-02, NRG-03, and NRG-04 when the rotary drill reached the concrete base. For NRG-01, NRG-02, and NRG-04, refusal on the concrete base occurred at approximately −45 ft MLLW (−45.9, −45.5, and −45.2 MLLW, respectively). NRG-03 met refusal at a much shallower depth, −36.8 ft MLLW. Based on a review of the existing schematics, it is believed that the rotary drill encountered a shallow wall that sloped down from the catwalk on the east side of the forebay. On the south side of the intake structure, no refusal was met and core samples were collected down to the project demolition limit of −54 ft MLLW (−52 ft plus a 2-foot overdredge allowance).
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2.2.4 Sample Handling and Processing
During the April 2012 sampling event, once samples were logged and photographed onboard the barge, individual sediment core samples were homogenized separately in a clean stainless steel mixing vessel. Homogenized samples were then transferred to clean food-grade plastic bags for storage and transport. At the end of the sampling event, the sediment from each homogenized core was mixed with a stainless steel blade to create a single area-wide composite. The area composite was then subsampled for chemical testing and archiving purposes. During the December 2012 sampling event, individual sediment core samples were logged and photographed onboard the barge. Each core sample was homogenized separately in a clean stainless steel mixing vessel and transferred to a 16-ounce (oz) glass jar and plastic bag for chemical and physical analyses, respectively. All samples collected were transferred in a cooler with ice to Calscience Environmental Laboratories, Inc. (Calscience) in Garden Grove, CA, a California-accredited laboratory. Proper record keeping and chain-of-custody (COC) procedures were implemented to trace samples from collection through archiving or disposal. Completion of all COC documentation was the responsibility of the Field Manager. COC forms were completed and signed before the end of each sampling day and before the samples were removed from the vessel or passed from the control of the Field Supervisor. COCs were also signed at each additional point of transfer of samples between the field and the laboratories.
2.2.5 Sample Archives
One 8-oz. glass jar of the sediment composite sample from the April 2012 event has been retained for followup testing, if needed. Archives were also kept for each individual core sample collected during the December 2012 event. These archive samples are being retained frozen at AMEC and will be kept for one year from the date of collection unless requested otherwise.
2.3 Physical and Chemical Analyses
The physical and chemical analyses performed, analysis methods, and target detection limits are presented in Table 2-1.
2.3.1 Physical Analysis
Grain-size analysis was performed by Calscience. Particle size distribution was analyzed using a standardized laser light scattering method (American Society for Testing and Materials [ASTM] 4464M/D4464M). Gravel, sand, silt, and clay were reported as fractions down to 0.1 percent. Corresponding size (millimeter and phi) and a cumulative grain size distribution diagram were also provided.
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2.3.2 Chemical Analyses
2.3.2.1 Sediments
Calscience conducted all analytical chemical analyses. Each sediment sample was analyzed according to USACE- and USEPA-approved methods for the constituents listed in Table 2-1. Routine laboratory quality assurance and quality control (QA/QC) procedures included duplicate sample analyses, reagent blanks, and spiked samples according to USEPA methods.
2.3.2.2 Site Water and Sediment Elutriates
Site water was collected from within the structure enclosure of the NRG intake forebay area prior to the initiation of sediment sampling. The site water was tested chemically and was also used to create an elutriate sample following a standardized modified elutriate test (MET) procedure. This procedure is also referred to as the effluent elutriate test (EET), as presented in the UTM. (In the remainder of this report, the elutriate test will be referred to as the “EET.”) Chemical results are discussed below and a full laboratory report is in Appendix C. Prior to use, all lab ware was thoroughly cleaned in accordance with standard laboratory operating procedures (detergent wash, acid bath, rinse and flush with deionized [DI] water). In accordance with the EET method, a sediment/seawater slurry concentration of 150 grams per liter (dry-weight basis) was used. At room temperature, the slurry was mixed vigorously for five minutes in a large high-density polyethylene jar. Following mixing, the slurry was poured into a plastic 4-liter graduated cylinder. The slurry was aerated vigorously using compressed air delivered via Teflon tubing to the bottom of the cylinder for one hour, then allowed to settle for twenty-four hours. The supernatant was then siphoned off using Teflon tubing into clean containers. Finally, the resulting supernatant was filtered using a 0.45-micron filter (for metals), centrifuged (for organics), and transferred to new clean containers. Constituents analyzed and associated method detection limits are provided in Table 2-1 for both the site water and sediment elutriate samples.
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Table 2-1. Chemical Analyses of Sediment, Site Water, and Elutriate Samples
Phthalates 8270C SIM d 10 µg/kg 5.0 µg/LOrganotins Krone et al.i 3.0 µg/kg 3.0 ng/L
Notes: a Sediment minimum detection limits are on a dry-weight basis. b Reporting limits provided by Calscience. c Standard Methods for the Examination of Water and Wastewater, 19th Edition American Public Health Association et al., 1995. d USEPA, 1986–1996. SW-846. Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, 3rd Edition. e Includes naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene), fluoranthene, pyrene, benzo(a)anthracene,
chrysene, benzo(b,k)fluoranthene, benzo(a)pyrene, indeno(1,2,3-c,d)pyrene, dibenzo(a,h)anthracene, benzo(g,h,i)perylene. f Includes aldrin, �-BHC, �-BHC, �-BHC (lindane), �-BHC, chlordane, 2,4- and 4,4-DDD, 2,4- and 4,4-DDE, 2,4- and 4,4-DDT,
dieldrin, endosulfan I and II, endosulfan sulfate, endrin, endrin aldehyde, heptachlor, heptachlor epoxide, and toxaphene. g Except toxaphene, which is 1,000 µg/kg h Polychlorinated biphenyls, sum of 41 congeners: 18, 28, 37, 44, 49, 52, 66, 70, 74, 77, 81, 87, 99, 101, 105, 110, 114, 118,
119, 123, 126, 128, 138, 149, 151, 153, 156, 157, 158, 167, 168, 169, 170, 177, 180, 183, 187, 189, 194, 201, and 206. i Rice, C.D. et al., 1987, or similar (e.g. Krone et al., 1989)
µg/kg - micrograms per kilogram (parts per billion) µg/L - micrograms per liter (parts per billion) ASTM - American Society for Testing and Materials mg/kg - milligrams per kilogram (parts per million) mg/L - milligrams per liter (parts per million) N/A - not applicable ng/L - nanograms per liter (parts per trillion)
PAH - polycyclic aromatic hydrocarbon PCB - polychlorinated biphenyl TOC - total organic carbon TPH - total petroleum hydrocarbon TRPH - total recoverable petroleum hydrocarbon TSS - Total Suspended Solids USEPA - United States Environmental Protection Agency
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 3.0 RESULTS
3.1 Sample Collection
All sediment samples were collected April 4–6, 2012 and December 11, 2012 in accordance with the procedures highlighted above and detailed in the project-specific SAP. The core collection data summarized in Table 3-1 includes date and time of collection, global positioning system location, actual penetration depth, and a brief description of the cores. Detailed core logs are located in Appendix A and photographs of each core are presented in Appendix B.
3.2 Vibracore Sampling
Field core logs and photographs recorded during the December 2012 study indicate an abundance of shell hash in the area immediately outside of the intake structure walls. Shells were observed on the grating and walls of the structure by project scientists.
3.3 NRG-A Bottom of Core
The Z-layer is defined as the new, resultant sediment surface within the footprint following the completion of dredging operations. At the time of the April 2012 sampling to characterize the sediment that had accumulated within the intake structure, Z-layer sampling was not attempted as it was originally assumed that the bottom of the structure was entirely concrete. During the December 2012 vibracore sampling event to characterize the sediment outside the structure, Z-layer sample collection was attempted. To obtain Z-layer samples, the contractor attempted to penetrate the vibracore for an additional 0.5–2 ft below the total target project depth of −54 ft MLLW. If collected, the Z-layer would be removed from the bottom of each core and transferred into a separate glass jar for chemical testing. The only location where deeper penetration was achieved was at sample site NRG-A. The three other cores attempted outside of the intake forebay structure met refusal before the −54 ft MLLW project depth limit was achieved. At NRG-A, the corrected water depth and the measuring tape attached to the vibracore head showed that the vibracore sampled down to −55.3 ft MLLW. Because of this observation, a standard sediment sample (NRG-A) was collected from the main portion of the recovered core, and a second ‘NRG-A Bottom’ sample was collected from the lower 1.3ft of recovered core. The sample identification number for this NRG-A Bottom sample in the lab reports is ‘NRG-A-Z 0-0.5’. Although deeper penetration at NRG-A was recorded, it cannot be conclusively determined that the full core and thus a Z-layer sample were collected at NRG-A for the following reasons:
• The NRG-A sample location is located directly north of the intake forebay structure and is located on an extreme slope directly in front of the submerged intake structure. While sampling, there was not an obvious indication of “tipping” as the vibracore entered the sediment. However, if the vibracore did ”tip” slightly, it is possible that the bottom portion of the vibracore sample recovered could be slightly shallower than what was estimated.
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• The NRG-A sediment recovery was also atypical because it was missing the top four feet. There are several possible explanations for this. In some situations sampling very fluffy / light silts, the initial few feet of silt will ‘blow out’ the top of the vibracore head because the silts are so fluffy and lack internal cohesion to remain together while the vibracore penetrates through it. A second possible explanation and which may be the case here, is that in situations with extreme slope such as this, it is possible the vibracore tube ‘shaved’ the edge of the slope during lowering, and did not collect a full core because of the abnormal nature of the sediment bottom.
Because of the unique topography of the site at NRG-A, and because only one sample was estimated to penetrate below −54 ft MLLW, using the chemistry data from the NRG-A Bottom sample to extrapolate and represent the entire dredge area’s resultant post-dredge sediment surface is not recommended; the NRG-A Bottom sample should not be considered a Z-layer sample.
3.4 Grain Size Analyses Results
Grain size results for the NRG sediment area composite and the individual cores outside of the intake structure are summarized in Table 3-2. The materials tested both inside and outside the structure were all composed predominantly of silt. The combined silt/clay fraction comprised 81.52 percent of the NRG-Comp sample and 96.28 and 86.60 percent for NRG-A and NRG-B samples, respectively. Analytical reports for grain size are in Appendix C.
3.5 Bulk Sediment Chemistry Results – Dry Weight
The results of the sediment chemical analyses are summarized in Table 3-3 and presented in dry weight. Original laboratory reports are presented in Appendix C. To evaluate the relative quality of sediment in the intake forebay structure and the area outside of the structure, sediment chemical concentrations were compared to guideline values that have been derived to help assess the potential for biological effects in sediments; effects range-low (ERL) and effects range-median (ERM) concentrations (Buchman, 2008). These sediment quality guideline values were established by screening the published literature for studies with paired sediment chemistry and toxicity data. The ERL represents the tenth percentile concentration of each chemical associated with a statistically significant toxic response; and thus represents a concentration below which effects on sensitive species are typically not expected. The ERM is equivalent to the median concentration associated with a statistically significant toxic response based on a distribution of all of the available data analyzed. The ERM represents a value above which adverse effects are more likely. ERLs and ERMs do not represent sediment quality criteria, but are useful in providing a general basis for characterizing sediment quality. ERL and ERM concentrations are in dry weight, so the test sediment chemistry results were corrected for percentage of moisture in order to present them in dry weight. This was done by performing a total solids analysis on the sediment to determine what percentage is sediment or solids, and what percentage is moisture. This moisture percentage is then used to convert the sediment wet weight values to dry weight values for comparison to ERL/ERM concentrations.
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-1. Sediment Core Collection Log
Station ID
Latitude (WGS84)
(dd°mm.mmm')
Longitude (WGS84)
(dd°mm.mmm')
Collection Date Time
Mudline Elevation (MLLW)
(ft)
Tide Correction Factor and
Time
Water Column
Thickness (ft)
Sediment Penetration Depth (ft)
Refusal Depth
(MLLW) (ft)
Split Spoon
#
Sediment Characterization
Length (ft) Comments
NRG-1 33º45.967' –118º13.359' 4/4/2012 1100 –39.3 +3.1 ft at 10:55 42.0 6.6 –45.9 1 0 – 2 Silt w/ shell hash. Very dark greenish grey. No odor. ~60% fines / 40% shell hash.
NRG-2 33º45.970' –118º13.358' 4/5/2012 1054 –39.1 +4.0 ft at 10:54 43.1 6.4 –45.5 1 0 – 4.5 Silt w/ shell hash. Very dark greenish grey. No odor. ~60% fines / 40% shell hash.
NRG-2 33º45.970' –118º13.358' 4/5/2012 1054 –39.1 +4.0 ft at 10:54 43.1 6.4 –45.5 2 4.5 – 6.4 Very dark greenish grey clay/silt (ML/CL).
NRG-3 33º45.965' –118º13.354' 4/5/2012 1218 –33.1 +2.6 ft at 11:55 35.7 3.7 –36.8 1 0 – 3.7 Silt w/ shell hash. Very dark greenish grey. No odor. ~60% fines / 40% shell hash.
NRG-4 33º45.964' –118º13.356' 4/5/2012 1420 –39.2 +0.4 ft at 14:00 39.6 6.0 –45.2 1 0 – 4.75 Silt w/ shell hash. Very dark greenish grey. No odor. ~60% fines / 40% shell hash.
NRG-4 33º45.964' –118º13.356' 4/5/2012 1420 –39.2 +0.4 ft at 14:00 39.6 6.0 –45.2 2 4.75 – 6 Clay/silt. Greenish black. ~70% fines / 30% shell hash. No odor. NRG-5 33º45.960' –118º13.353' 4/5/2012 1550 –41.4 +0.1 ft at 15:15 41.5 12.6 NA 1 0 – 10 Silt with shell hash. Dark greenish gray clay.
NRG-6 33º45.960' –118º13.358' 4/6/2012 830 –41.9 +3.7 ft at 08:00 45.6 12.1 NA 1 0 – 5 Silt w/ shell hash. Very dark greenish grey. No odor. ~60% fines / 40% shell hash.
NRG-6 33º45.960' –118º13.358' 4/6/2012 830 –41.9 +3.7 ft at 08:00 45.6 12.1 NA 2 5 – 10 Very dark greenish gray clayey silt. ~90% fines / 10% shell hash. Slight sulfuric odor.
NRG-6 33º45.960' –118º13.358' 4/6/2012 830 –41.9 +3.7 ft at 08:00 45.6 12.1 NA 3 10 – 12.1 ~60% fines / 40% shell hash. Shell hash varies 20–40% in layers. Clay pockets are present in silt.
NRG-7 33º45.959' –118º13.354' 4/6/2012 1035 –43.4 +4.8 ft at 10:00 48.2 10.6 NA 1 0 – 5 Surface very dark brownish gray silt. Greenish black silt with no odor. NRG-7 33º45.959' –118º13.354' 4/6/2012 1035 –43.4 +4.8 ft at 10:00 48.2 10.6 NA 1 5 – 7 Clay/silt. NRG-7 33º45.959' –118º13.354' 4/6/2012 1100 –43.4 +4.8 ft at 10:00 48.2 10.6 NA 1 7 – 10.6 Greenish black clay and silt. ~90% fines / 10% shell hash. Sulfuric odor.
NRG-A 33º45.976' –118º13.359' 12/11/2012 1120 –44.3 +1.2 ft at 1120 45.5 11.0 –55.3 NA 4 – 11
Top four feet not recovered. Sandy silt. Very dark gray, very fine silt. Shell hash. Strong organic odor near bottom. NRG-A Bottom sample taken from estimated 9.7–11 feet core depth. At 10 feet, small concrete / asphalt pieces 0.5–1 inches long. Refusal at 11 feet.
NRG-B 33º45.967' –118º13.349' 12/11/2012 1230 –42.3 –0.3 ft at 1230 42.0 8.0 –50.3 NA 3 – 8 Top three feet not recovered. Silty sand with shell hash. Very dark gray ~75% shell hash, shells are coarse grain, organic odor. Compacted from 0 to 0.3 feet.
NRG-C 33º45.960' –118º13.342' 12/11/2012 1310 –48.9 –0.9 ft at 1310 48.0 0.0 –48.9 NA NA Refusal at surface. No recovery. NRG-D 33º45.953' –118º13.341' 12/11/2012 1330 –49.6 –1.1 ft at 1330 48.5 4.0 –53.6 NA NA Refusal at 4 feet. No recovery. Silts lost during extraction.
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
NRG-B Silt 0.026 0.00 0.00 0.00 0.01 4.57 8.82 13.4 58.34 28.26 86.60 Notes: mm - millimeter(s) NRG - NRG Long Beach Generating Station
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Total PAHs µg/kg 4022 44792 4300 2000 1047 569 Notes: All units are reported in dry weight. 1. Original sample collection event, April 4–6, 2012 2. Supplemental samples collected December 11, 2012 % - percent MTBE - methyl-t-butyl ether µg/kg - micrograms per kilogram (parts per billion) ND - non-detect above reporting limit DDD - dichlorodiphenyldiethane NM - not measured DDE - dichlorodiphenylethylene NRG - NRG Long Beach Generating Station DDT - dichlorodiphenyltrichloroethane PAH - polycyclic aromatic hydrocarbon DIPE - diisopropyl ether PCB - polychlorinated biphenyl ERL - Effects Range Low TAME - tert-amyl-methyl ether ERM - Effects Range median TBA - tert-butyl alcohol ETBE - ethyl-t-butyl ether TOC - total organic carbon mg/kg - milligrams per kilogram (parts per million) TRPH - total recoverable petroleum hydrocarbons
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 Sediment concentrations were also presented as wet weight in Table 3-4 and discussed in Section 3.6. Note that these wet weight values are provided solely for reference for upland disposal, and not to determine hazardous waste criteria. A comparison of chemistry results for test sediments from within the intake forebay structure and the area outside the structure to ERL/ERM guideline values indicates, in general, that the test sediments contain some chemical contaminants at elevated concentrations, particularly metals. However, the chemical concentrations are similar to those typically measured in industrialized areas of the Port. Sediment chemistry results are summarized below.
3.5.1 General Chemistry
Concentrations of ammonia, oil and grease, and TRPH in the NRG sediment samples range from 6.6 to 30 mg/kg, 85 to 1,300 mg/kg, and 57 to 1,000 mg/kg, respectively. Concentrations of analytes considered as general chemistry were all greatest in the April 2012 area-wide sediment composite sample (NRG-Comp), except for total and dissolved sulfides, which were greater in individual core samples collected during the December 2012 event.
3.5.2 Metal Concentrations
The NRG-Comp sample contained concentrations of several trace metals that exceeded ERL guideline values (copper, arsenic, lead, nickel, and zinc), and one trace metal concentration (mercury) that was above the ERM guideline value. The mercury concentration was 0.877 mg/kg, just above the ERM guideline of 0.71 mg/kg. NRG-A, NRG-B, and the NRG-A Bottom sample had similar trace metal concentrations and exceeded ERL guidelines for the same metals as the NRG-Comp sample. In addition, sediments analyzed from the NRG-A sample contained concentrations of cadmium and silver that exceeded ERL guideline values. Chemical concentrations were typically less in the NRG-A Bottom sample compared to those in sediment collected at the shallower subsurface depth for sample NRG-A.
3.5.3 Chlorinated Pesticides and Synthetic Pyrethroids
Chlorinated pesticide and synthetic pyrethroid concentrations were all non-detect (ND) in the NRG composite sediment sample, NRG-A, NRG-B, and NRG-A Bottom, except for 4,4'-DDE and total detectable DDTs. 4,4’-DDE was present in NRG-Comp, NRG-A, and NRG-B with results of 19 µg/kg, 1.8 µg/kg, and 9.6 µg/kg, respectively. All three of the samples also exceeded the ERL guideline of 1.58 µg/kg for total detectable DDTs, and the NRG-Comp sample along with sample NRG-B exceeded the ERL guideline of 2.2 µg/kg for 4,4'-DDE. No guidelines are available for synthetic pyrethroids; however, the NRG-Comp sample contained 0.67 µg/kg of total synthetic pyrethroids. This is probably due to trace amounts (less than the method detection limit) of one or more pyrethroids in the sample.
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 3.5.4 Polycyclic Aromatic Hydrocarbons
The concentration of total PAHs in the NRG-Comp test sediment was 4,300 µg/kg, just above the ERL of 4,022 µg/kg. Total PAHs in NRG-A, NRG-B, and NRG-A Bottom were all below the ERL guideline value. Many of the individual PAHs analyzed were ND, but some individual PAHs also exceeded their respective ERL guideline values, such as acenaphthylene, anthracene, pyrene, and dibenz(a,h)anthracene in NRG-Comp, and anthracene in sample NRG-A.
3.5.5 Phenols
Phenols were ND in all NRG sediment samples.
3.5.6 Phthalates
Three phthalates were detected in the samples; bis(2-ethylhexyl) phthalate, butyl benzyl phthalate, and and dimethyl phthalate. Bis(2-ethylhexyl) phthalate was detected in only NRG-Comp with a result of 200 µg/kg. Butyl benzyl phthalate was detected in NRG-Comp (40 µg/kg) and NRG-A (22 µg/kg), but not in the NRG-A Bottom sample or NRG-B. Dimethyl phthalate was detected in all of the samples tested at concentrations of 75, 640, 760, and 240 µg/kg for NRG-Comp, NRG-A, NRG-B, and the NRG-A Bottom sample, respectively. There are no sediment quality guidelines for phthalates.
3.5.7 Organotins
Dibutyltin and tributyltin were the only organotins detected in samples. These analytes were found in the NRG-Comp sediment at concentrations of 39 and 51 µg/kg, respectively. Monobutyltin and tetrabutyltin were both ND in samples. No butyltins were detected in any of the sediment samples collected outside of the structure. There are no ERL/ERM sediment quality guidelines for butyltins.
3.5.8 Polychlorinated Biphenyl Congeners
Individual PCB concentrations ranged from 0.91 to 9.6 µg/kg, with most individual PCB congeners analyzed resulting in an ND concentration. Total PCB congeners, however, were detected in the NRG-Comp sample at concentrations of 91 µg/kg and exceeded the ERL guideline value of 22.7 µg/kg. None of the samples collected outside of the structure exceeded the ERL guidelines for total PCBs.
3.6 Bulk Sediment Chemistry Results – Wet Weight
The results of the sediment chemical analyses presented in wet weight are summarized in Table 3-4. Original laboratory reports are in Appendix C. Wet-weight data is solid sample data not corrected for percent moisture. Wet-weight values are used when comparing sediment chemical concentrations to several upland disposal criteria. However, as stated previously in this report, a true landfill hazardous material characterization, if necessary, may require additional testing at a future date.
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Total PAHs µg/kg 2337 1122 671 336 Notes: All units are reported in wet weight. 1. Original sample collection event, April 4–6, 2012 2. Supplemental samples, collected on December 11, 2012 % - percent ETBE - ethyl-t-butyl ether PAH - polycyclic aromatic hydrocarbon µg/kg - micrograms per kilogram (parts per billion) mg/kg - milligrams per kilogram (parts per million) PCB - polychlorinated biphenyl DDD - dichlorodiphenyldiethane MTBE - methyl-t-butyl ether TAME - tert-amyl-methyl ether DDE - dichlorodiphenylethylene ND - non-detect above reporting limit TBA - tert-butyl alcohol DDT - dichlorodiphenyltrichloroethane NM - not measured TOC - total organic carbon DIPE - diisopropyl ether NRG - NRG Long Beach Generating Station TRPH - total recoverable petroleum hydrocarbons
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 3.7 Site Water and Elutriate Chemistry Results
The site water and the effluent elutriate test (EET) samples contained very few chemicals reported above the method detection limits. Total PCB congeners, aroclors, butyltins, PAHs, chlorinated pesticides, and DDTs all were ND in both samples with one exception, methylene chloride. This analyte was detected in the elutriate sample at a concentration of 150 µg/L. The site water and the elutriate sample both contained detectable concentrations of metals, but none exceeded the EPA criterion continuous concentration (CCC) or criteria maximum concentration (CMC) guideline values for seawater. The CMC is an acute 1-hour average exposure criterion that should not be exceeded more than once every three years; the CCC is a 4-day average chronic exposure criterion, also not to be exceeded more than once every three years. The low values in the elutriate show that most analytes are not soluble and would not enter the water column during placement in the Middle Harbor CDF or other Middle Harbor fill locations. Site water and EET chemistry test results are presented in Table 3-5.
Table 3-5. Site Water and Elutriate Chemistry Test Results
Compound Name Units CCC CMC Site Water Elutriate General Chemistry
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-5. Site Water and Elutriate Chemistry Test Results (Cont.)
Compound Name Units CCC CMC Site Water Elutriate Aldrin µg/L --- 1.30 ND ND
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-5. Site Water and Elutriate Chemistry Test Results (Cont.)
Compound Name Units CCC CMC Site Water Elutriate 4-Chlorotoluene µg/L --- --- ND ND
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-5. Site Water and Elutriate Chemistry Test Results (Cont.)
Compound Name Units CCC CMC Site Water Elutriate Trichlorofluoromethane µg/L --- --- ND ND
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-5. Site Water and Elutriate Chemistry Test Results (Cont.)
Compound Name Units CCC CMC Site Water Elutriate Butyltins
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Table 3-5. Site Water and Elutriate Chemistry Test Results (Cont.)
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
3.8 Sediment, Water, and Elutriate Chemistry Data Quality
Sediment, water, and elutriate chemistry data provided by Calscience were reviewed and found to be of acceptable quality for reporting purposes. Matrix spike (MS) analyses were performed for each applicable analysis on both project samples and non-project samples. All parameters for the project sample MS were within the established control limits with the following exceptions:
• The concentration of barium in the NRG site water exceeded the MS concentrations by four times or more, which caused the MS/ matrix spike duplicate (MSD) and relative percent difference (RPD) values to fall outside the control limits in QC Batch 120410S03. The results have been flagged with the appropriate qualifiers and are released with no further action because the laboratory control sample (LCS) and LCS duplicate (LCSD) recoveries and RPDs were in control.
• Sediment sample NRG-Comp was used for the organotins matrix spiking (QC Batch 120409S14C) and the MS/MSD recoveries for tetrabutyltin were above the established control limits because of matrix interference. However, because the associated LCS/LCSD recoveries were in control, the data are released with no further action.
• Sample NRG-Comp was used for the USEPA 8082 PCB aroclors matrix spiking (QC Batch 120406S17), and the MS/MSD recoveries and RPDs fell outside the control limits. However, the results have been flagged with the appropriate qualifiers and are released with no further action because the associated LCS/LCSD recoveries and RPDs were within the established limits.
• Two PAH MS/MSD recoveries and RPDs were outside the established control limits for MS sample NRG-Comp (QC Batch 120406S05A). However, because the associated LCS/LCSD recoveries and RPDs were in control, the data are released with no further qualification.
Surrogate recoveries for all applicable tests and samples were within the established control limits. For the sediment samples outside the catwalk area (CEL Report # 12-12-0795), matrix spiking was performed at the required frequencies on both project and non-project samples. All parameters for the project sample matrix spikes were within the acceptable control limits with the following exceptions:
• For metals by EPA 6020, several metals were outside the established control limit because of the concentration of the metals in the spiked sample. Given that the batch associated LCS/LCSDs recoveries and RPDs were within the acceptable limits, the data are released with no further action.
• For mercury by EPA 7471A, the concentration in the sample was four times or more higher than the spike amount, so the recoveries could not be calculated. The LCS/LCSD
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recoveries and RPDs were within acceptable limits, so the data are released with no further action.
• For aroclors by EPA 8082, the recoveries and RPDs were outside the established control limit. Because the batch LCS/LCSDs recoveries and RPDs were within acceptable limits, the data are released with no further action.
• For the sediment samples outside the catwalk area, the LCS analysis was performed for each applicable test. All parameters were within established control limits except the following. For 8260 the ethyl-t-butyl ether (ETBE) recovery was low. The recovery was in the marginal exceedance (ME) range. Since one ME is allowed per LCS the batch was acceptable, the data are released with no further action.
For the elutriate sample, LCS/LCSD analyses were performed for each applicable method at the required frequencies, and all parameters were within the control limits for each method. Because of limited volume, matrix spikes could not be performed on project samples for the elutriate test. A more detailed data quality explanation is in the chemistry report in Appendix C. The data are considered valid for final reporting purposes and were not further qualified.
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 4.0 DISCUSSION
4.1 Grain Size
The grain size results indicate that the sediments in the NRG intake forebay structure and the area outside of the structure are composed primarily of silts with limited fine- and very-fine-grained sand.
4.2 Chemistry
4.2.1 Sediment Chemistry Results
As noted in Section 3.5, ERL and ERM values are useful measures for characterizing the general quality of marine sediments. The main chemicals of potential concern (COPCs) in sediment within the NRG intake forebay structure and the area outside of the structure are several trace metals and a few PCB congeners. Because the levels of chemical contaminants observed in this study are not excessive and are typical of an industrialized port, coupled with the fact that the sediments are not proposed for placement in an unconfined aquatic environment, placement of sediments from the NRG intake forebay structure and the area outside of the structure in the Middle Harbor CDF area or other Middle Harbor fill locations is considered an acceptable disposal option.
4.2.2 Site Water Chemistry and Elutriate Chemistry Results
As noted in Section 3.7, CMC and CCC values are useful measures for characterizing the general quality of marine water. A few low-level metals were detected in sediment elutriates and site water from the NRG intake forebay structure, all of which were below CMC and CCC values. The metals that were seen elevated above ERLs in the sediment results were not seen in significant amounts in the elutriate sample, showing that the metals present in the sediment are generally not soluble, and would not enter the aquatic environment during disposal. No other COPCs were detected in site water or sediment elutriates; therefore, there is no potential concern for impact on the aquatic environment during removal or disposal operations.
4.3 Disposal Options
4.3.1 Nearshore Confined Disposal Facility in the Middle Harbor CDF or Other Middle Harbor Fill
The Port’s preferred disposal option at the time of sampling was to place the accumulated sediment from the area within and around the NRG intake forebay structure as beneficial reuse fill in the nearby Middle Harbor CDF. Currently, however, the Middle Harbor CDF is full and no longer accepting additional material. Regardless, there is still a need for the NRG material to be placed as general Middle Harbor fill material, the exact location of which will be determined in the future based on other timelines of sediment dredging and disposal projects.
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4.3.2 Upland Placement
If the Middle Harbor fill placement option is not feasible for the Port, with regards to cost, contract timing, or other factors, the Port may pursue disposing of the sediment via upland placement. According to the Port’s Sediment Management Handbook, “Because contaminant leaching is a primary concern associated with upland placement (Everest and Anchor, 2009), testing to determine suitability for upland placement should include geotechnical and chemical analyses on bulk sediment and leachate tests. The TCLP and WET are leachate tests required under Title 40 Code of Federal Regulations (CFR) Part 261 and Title 22 CCR Chapter 11, Article 3, to evaluate whether a material is a hazardous waste. Prior to conducting these tests, bulk sediment chemical concentrations should be compared to 20 times the TCLP regulatory values and 10 times the soluble threshold limit concentration (STLC). These factors are based on liquid-to-solid ratios of 20:1 and 10:1 used in TCLP and WET, respectively. It is necessary to perform the actual TCLP and/or WET for samples in which analytes exceed these criteria. Results of TCLP should be compared with USEPA regulatory values of 40 CFR Part 261; results of the WET should be compared with STLCs of Title 22 CCR Chapter 11, Article 3. If no analytes exceed these criteria, the material is suitable for upland disposal” (Anchor, 2011). If upland placement is to be pursued, some additional testing may be necessary, specifically, STLC or WET analysis and TCLP analysis. If this upland placement pathway is chosen, Port Engineering will dredge and temporarily store the material on land at Pier S to dry the sediment. At that time, a new sediment sample may be taken and tested for the above analytes to determine upland placement options.
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 5.0 CONCLUSION
The sediment characterization study results presented in this report indicate that the proposed dredged material within the NRG intake forebay structure and in the area outside of the structure do comply with the suitability requirements outlined in the UTM and were characterized in accordance with the Port of Long Beach Sediment Management Handbook for Dredge and Fill Projects (Anchor, 2011). This conclusion is supported by the following evidence.
• A comparison of sediment quality within the NRG intake forebay structure and in the area outside of the structure to ERL/ERM guideline values generally indicates that the test sediments contained some trace metals and total PCB congeners above ERL guidelines and mercury above ERM guidelines. However, the chemical concentrations are similar to those typically measured in industrialized areas of the Port.
• The sediments to be removed from the NRG intake forebay structure and in the area outside of the structure may be placed in the Middle Harbor CDF with no treatment or further testing. The site water and EET tests show very few detectable COPCs, and show that the analytes that are above ERLs are not seen in significant quantities in the elutriate sample, indicating that the analytes are non soluble. Therefore placement at the Middle Harbor CDF should not create any water quality concerns.
• All collection and analysis QA/QC measures for physical and chemical testing were found to be acceptable and the data presented in this report are considered valid.
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013 6.0 REFERENCES
AMEC. 2012. Sampling and Analysis Plan, Sediment Characterization Study, Maintenance Dredging of the Intake Forebay Structure, NRG Long Beach Generating Station, Long Beach Harbor.
American Public Health Association, American Water Works Association, and Water Environment Federation. 1995. Standard Methods for the Examination of Water and Wastewater. 19th Edition. Edited by A.D. Eaton, L.S. Clesceri, and A.E. Greenberg. Washington, DC.
Anchor QEA, L.P., and Thomas Johnson Consultant, LLC, 2011. Sediment Management Handbook for Dredge and Fill Projects. Prepared for Port of Long Beach. December.
Buchman, M.F. 2008. NOAA Screening Quick Reference Tables. NOAA OR&R Report 08-1. Seattle Washington: Office of Response and Restoration Division, National Oceanic and Atmospheric Administration. 34 pages.
Everest and Anchor QEA. 2009. Los Angeles Regional Dredged Material Management Plan. Prepared for the U.S. Army Corps of Engineers, Los Angeles District. February.
Krone, C.A., D.W. Brown, D.G. Burrows, R.G. Bogar, S.L. Chan, and U. Varanasi, 1989. A Method for Analysis of Butyltin Species and Measurement of Butyltins in Sediment and English Sole Liver from Puget Sound. Marine Environmental Research 27: 1–18.
Long, E.R., D.D. MacDonald, S.L. Smith, and F.D. Calder, 1995. Incidence of Adverse Biological Effects Within Ranges of Chemical Concentrations in Marine and Estuarine Sediments. Environmental Management, 19:81–97
Rice, C.D., F.A. Espourteille, and R.J. Huggett. 1987. Analysis of Tributyltin in Estuarine Sediments and Oyster Tissue, Crassostrea virginica. Applied Organometallic Chemistry 1: 541–544.
United States Environmental Protection Agency (USEPA). 1986–1996. Test Methods for Evaluating Solid Waste: Physical/Chemical Methods. Revision 3 (November 1986), as amended by Updates I (July 1992), II (September 1994), IIA (August 1993), IIB (January 95), and III (December 96). SW-846.
USEPA. 1995. QA/QC Guidance for Sampling and Analysis of Sediments, Water, and Tissues for Dredged Material Evaluations (Chemical Evaluations). USEPA 832-B-95-001.
USEPA. 2000. Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. May.
USEPA. 2001. Methods for Collection, Storage and Manipulation of Sediments for Chemical and Toxicological Analyses: Technical Manual
Page 6-5
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Page 6-6
USEPA and United States Army Corps ofEngineers (USACE).. 2003. Evaluation of Dredged Material Proposed for Disposal at Island, Nearshore, or Upland Confined Disposal Facilities – Testing Manual. USEPA-ERDC/EL TR-03-1.
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
APPENDIX A
SEDIMENT CORE FIELD LOGS
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
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Project No.1015100209
SEDIMENT CHARACTERIZATION STUDY Intake Forebay Structure - NRG - Long Beach, CA
No recovery
Continuous soil or rock core
Piston sample
Shelby tube sample
Modified California split spoonsample
Standard penetration test (SPT)sample
6" Brass Liner Sample
Silty gravels, gravel-sand-silt mixtures
SILTSAND
CLAYSLL>50
Inorganic silts and very fine sand, rockflour, silty or clayey fine sands, orclayey silts with slight plasticity
Inorganic clays of hogh plasticity, fatclays
Inorganic silts, micaceous ordiatomaceous fine sandy or silty soils,elastic silts
CH
Organic clays of medium to highplasticity
MH
HIGHLY ORGANICSOILS Peat and other highly organic soils
FINEGRAINED
SOILS
Organic silts and organic silt-clays oflow plasticity
Clayey sands, sand-clay mixtures
Poorly-graded sands or sand withgravel, little or no fines
Well-graded sands or sand with gravel,little or no fines
SC
SM
SP
SW
OH
Well-graded gravels or gravel-sandmixtures, little or no finesGW
GRAVEL
DESCRIPTIONLTRMAJOR DIVISIONS
Inorganic clays of low to mediumplasticity, gravelly clays, sandy clays,silty clays, lean clays
OL
CL
ML
COARSEGRAINED
SOILS
SAND
SILTSAND
CLAYSLL<50
LTRMAJOR DIVISIONS DESCRIPTION
Clayey gravels, gravel-sand-claymixturesGC
GM
GP Poorly-graded gravels or gravel-sandmixture, little or no fines
PT
Silty sands, sand-silt mixtures
NOTES1. Soil descriptions are in accordance with the USCS as set forth by ASTM D2488 "Standard Practice for Description and Identification Soil (Visual-Manual Procedure)."2. Soil color described according to Munsell Soil Color Chart. Rock color described according to Munsell Rock-Color Chart3. Soil descriptions in these borings are generalized representations and based upon visual classification of cuttings and/or samples during drilling. Descriptions and related information in these borings depict subsurface conditions at the specific location and at the time of drilling only. Soil conditions at other locations may differ from conditions observed at the boring locations. Also, soil and groundwater conditions may change with time at these locations.
LABORATORY TEST ABBREVIATIONS
SAMPLE COLUMN SYMBOLS
DESCRIPTION COLUMN SYMBOLS
ATT Atterberg LimitsCOLL Collapse PotentialCOMP CompactionCON ConsolidationR R-Value
CORR CorrosionDS Direct ShearEI Expansion IndexS Grain Size AnalysisPERM Permeability
Dashed lines separating soil strata represent inferred boundaries between sampled intervals or no recovery intervals andmay be distinct or gradual transitions
Solid lines represent distinct or gradual boundaries observed within sampled intervals
Description right of bracket symbol represents soil conditions within the depth interval defined by the bracket length
Description right of arrow symbol represents soil conditions to the next deeper boundary line unless otherwise noted
Water level at time of drilling
Water level after at least 12 hours from time of drilling
SE Sand EquivalentSG Specific GravityTX Triaxial TestUC Unconfined Compression Test#200 No. 200 Wash Sieve Analysis
BLOWS/FOOT - Summation of blow counts for deepest 12 inches is sampling intervalRQD% - Rock quality designation in percent
P:\1
0151
002
09\G
INT
_PH
000
5\10
151
0020
9.0
005
_LO
GS
.GP
JEXPLANATION OF BORING LOGS
Figure 1
MLLW = Mean Lower LowWater
Refusal on concrete baseof intake forebay structure.
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 3/2), ~60% fines, ~40% shell hash, lowplasticity, shells are coarse grain sand to coarse graingravel sized, no odor, unconsolidated from 0-0.3'
Bottom of boring at -45.9 feet MLLW due to refusal
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-40
-41
-42
-43
-44
-45
-46
-47
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
6.6'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
Refusal on concrete baseof intake forebay structure.
SILT (ML): very dark brownish gray (10Y 3/2), ~100%fines, low plasticity, no odor, unconsolidated
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 3/1), ~60% fines, ~40% shell hash, lowplasticity, shells are coarse grain sand to coarse graingravel sized, no odor
CLAYEY SILT (ML/CL)
@6.4 feet, fine grain gravels (concrete)
Bottom of boring at -45.5 feet MLLW due to refusal
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-40
-41
-42
-43
-44
-45
-46
-47
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
6.4'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
Refusal on concrete baseof intake forebay structure.
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 3/1), ~60% fines, ~40% shell hash, lowplasticity, shells are coarse grain sand to coarse graingravel sized, no odor
Bottom of boring at -36.8 feet MLLW due to refusal
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-34
-35
-36
-37
-38
-39
-40
-41
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
3.7'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
Refusal on concrete baseof intake forebay structure.
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 2.5/1), ~60% fines, ~40% shell hash, lowplasticity, shells are coarse grain sand to coarse graingravel sized, no odor, unconsolidated to 0.1 foot
CLAYEY SILT (ML/CL): greenish black (GLEY1 10Y2.5/1), ~70% fines, ~30% shell hash, low to mediumplasticity, shells are coarse grain sand to coarse graingravel sized, no odor
Bottom of boring at -45.2 feet MLLW due to refusal
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-40
-41
-42
-43
-44
-45
-46
-47
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
6.0'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
SILT with Shell Hash (ML): very dark brownish gray (10Y3/2), ~60% fines, ~40% shell hash, low plasticity, shellsare coarse grain sand to cobble sized, no odor,plastic/fibrous wood piece on surface
CLAY (CL): dark greenish gray (GLEY1 5GY 5/1),~100% fines, medium plasticity, high dry strength, no odor
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 3/1), ~70% fines, ~30% shell hash, lowplasticity, shells are coarse grain sand to coarse graingravel sized, no odor
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-42
-43
-44
-45
-46
-47
-48
-49
-50
-51
-52
-53
-54
-55
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
12.1'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
SILT (ML): very dark brownish gray (10Y 3/2), ~100%fines, low plasticity, no odor, unconsolidated
SILT (ML): greenish black (GLEY1 10Y 2.5/1), ~90%fines, ~10% shell hash, low plasticity, shells are fine graingravel sized, no odor
CLAYEY SILT (ML/CL)
~60% fines, ~40% shell hash, shells are coarse grainsand to coarse grain gravel sized
CLAY and SILT (CL/ML): greenish black (GLEY1 10Y2.5/1), ~90% fines, ~10% shell hash, medium plasticity,medium dry strength, shells are fine grain gravel sized,sulfuric odor
SILT with Shell Hash (ML): very dark greenish gray(GLEY1 10Y 3/1), ~60% fines, ~40% shell hash, lowplasticity, shells are coarse grain sand to fine grain gravelsized, no odor
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
K. DillerREG. NO.
Sam
ple
Num
ber
-44
-45
-46
-47
-48
-49
-50
-51
-52
-53
-54
-55
-56
-57
DRILLING CONTRACTOR:
2.5" CA Modified Split Spoon
8720
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
10.6'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
MLLW = Mean Lower LowWater
Unconsolidated surficialsilts not recovered.Possibly due to slopingbottom.
Hydrocarbon odorincreased at approximately6.2 feet.
*The NRG-A Bottomsample was collected fromthe bottom 1.3 feet ofrecovered material in thevibracore. This maycorrespond to -54 ft to-55.3 ft; however, thissediment sample may notrepresent a resultantsurface post-dredging dueto significant sloping of theharbor bottom at thissampling location.
SANDY SILT with Shell Hash (ML): very dark gray (5Y3/1), very fine Silt, no odor, very unconsolidated at top
SANDY SILT with Shell Hash (ML): very dark gray (5Y3/1), more coarse, sandiness is from shells; sheen inwater at 6.2. feet, strong organic odor
@7 feet: more consolidated
@10 feet: small concrete/asphalt pieces 0.5 to 1.0 incheslongRefusal at 11 feet
Intake Forebay Structure - NRG - Long Beach, CASEDIMENT CHARACTERIZATION STUDY
Page 1 of 1Project No. 1015100209
NAREG. NO.
Sam
ple
Num
ber
-50
-51
-52
-53
-54
-55
-56
-57
-58
-59
-60
-61
-62
-63
DRILLING CONTRACTOR:
Vibracore
NA
BORING LOCATION:
HAMMER WEIGHT:
SAMPLING METHOD:
DRILLING EQUIPMENT:
4.0'
DESCRIPTIONNAME (USCS): color, moist, % by wt., plast. density,
structure, cementation, react. w/HCl, geo. inter.
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
APPENDIX B
SEDIMENT CORE PHOTOGRAPH LOGS
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
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Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-1 Split Spoon #: 1 Core Length: 0 feet – 2 feet Sample Date & Time: 4/4/2012; 1100
Page B-1
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-2 Split Spoon #: 1 Core Length: 0 feet – 4.5 feet Sample Date & Time: 4/5/2012; 1054
Page B-2
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-2 Split Spoon #: 2 Core Length: 4.5 feet – 6.4 feet Sample Date & Time: 4/5/2012; 1054
Page B-3
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-3 Split Spoon #: 1 Core Length: 0 feet – 3.7 feet Sample Date & Time: 4/5/2012; 1218
Page B-4
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-4 Split Spoon #: 1 Core Length: 0 feet – 4.75 feet Sample Date & Time: 4/5/2012; 1420
Page B-5
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-4 Split Spoon #: 2 Core Length: 4.75 feet – 6 feet Sample Date & Time: 4/5/2012; 1420
Page B-6
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-5 Split Spoon #: 1 Core Length: 0 feet – 10 feet Sample Date & Time: 4/5/2012; 1550
Page B-7
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-6 Split Spoon #: 1 Core Length: 0 feet – 5 feet Sample Date & Time: 4/6/2012; 0830
Page B-8
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-6 Split Spoon #: 2 Core Length: 5 feet – 10 feet Sample Date & Time: 4/6/2012; 0830
Page B-9
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-6 Split Spoon #: 3 Core Length: 10 feet – 12.1 feet Sample Date & Time: 4/6/2012; 0853
Page B-10
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-7 Split Spoon #: 1 Core Length: 0 feet – 5 feet Sample Date & Time: 4/6/2012; 1035
Page B-11
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-7 Split Spoon #: 2 Core Length: 5 feet – 7 feet Sample Date & Time: 4/6/2012; 1035
Page B-12
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Page B-13
Location: NRG Long Beach Generating Station Sample ID: NRG-7 Split Spoon #: 3 Core Length: 7 feet – 10.6 feet Sample Date & Time: 4/6/2012; 1100
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-A Vibracore Sample Core Portion: 0 feet – 2 feet Sample Date & Time: 12/11/2012; 1120
Page B-14
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-A Vibracore Sample Core Portion: 2 feet – 4 feet Sample Date & Time: 12/11/2012; 1120
Page B-15
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-A Vibracore Sample Core Portion: 4 feet – 6 feet Sample Date & Time: 12/11/2012; 1120
Page B-16
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-A Vibracore Sample Core Portion: 5 feet – 7 feet Sample Date & Time: 12/11/2012; 1120
Page B-17
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-B Vibracore Sample Core Portion: 0 feet – 2 feet Sample Date & Time: 12/11/2012; 1230
Page B-18
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Location: NRG Long Beach Generating Station Sample ID: NRG-B Vibracore Sample Core Portion: 2 feet – 4 feet Sample Date & Time: 12/11/2012; 1230
Page B-19
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Page B-20
Location: NRG Long Beach Generating Station Sample ID: NRG-B Vibracore Sample Core Portion: 3 feet – 5 feet Sample Date & Time: 12/11/2012; 1230
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
APPENDIX C
ORIGINAL CHEMISTRY AND GRAIN SIZE LABORATORY RESULTS
Port of Long Beach Final Sediment Characterization Study—December 2012 Update Dredging of the Intake Forebay Structure NRG Long Beach Generating Station, Long Beach, California AMEC Project No. 1315100104 November 2013
Calscience Work Order No.: 12-04-0440Project ID: NRG- Long Beach Power Plant
Provided below is a narrative of our analytical effort, including any unique features oranomalies encountered as part of the analysis of the sediment and water samples.
Sample Condition on Receipt
One sediment sample (housed in 16-oz glass jars) and one seawater sample wasreceived for this project on April 6, 2012. The samples were transferred to the laboratoryin an ice-chest with wet ice, following strict chain-of-custody (COC) procedures. Thetemperature of the samples upon receipt at the laboratory ranged from 1.2- 2.2°C. Allsamples were given laboratory identification numbers, logged into the LaboratoryInformation Management System (LIMS) and then stored under refrigeration pendingsediment chemistry testing and elutriate preparation.
The EET results are presented in Calscience Work Order Number 12-04-0996.
Tests Performed
Sediment:
Total Sulfide and Dissolved Sulfide by EPA 376.2MTRPH by EPA 418.1MOil and Grease by EPA 413.2MTrace Metals by EPA 6020/7471ATPH-C6-44 with Silica Gel Clean-up by EPA 8015B (M)Chlorinated Pesticides by EPA 8081APCB Congeners by EPA 8270CPAHs, Phenols and Phthalates by EPA 8270C SIMPyrethroids by EPA 8270D (M)/TQ/EIVolatile Organics by EPA 8260BTotal Organic Carbon by EPA 9060AOrganotins by Krone et al.Total Solids by SM 2540BAmmonia by SM 4500-NH3 B/C (M)Grain Size by ASTM D4464 (M)
Seawater:
TSS by SM 2540DAmmonia by EPA 350.1 (M)Total and Dissolved Sulfide by SM 4500 S2-DOil and Grease by EPA 413.2
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Calscience Work Order No. 12-04-0440Page 2 of 3
Trace Metals by EPA 1640/7470AOC Pesticides by EPA 8081APCB Aroclors by EPA 8082PCB Congeners by EPA 8270C SIMPhthalates, Phenols and PAHs by EPA 8270C SIMVolatile Organics by EPA 8260BOrganotins by Krone et al.
Data Summary
The sediment sample results and reporting limits were dry weight corrected.
The sediment sample was homogenized prior to preparation and analysis.
Holding times
All holding times were met.
Calibration
Frequency and control criteria for initial and continuing calibration verifications were met.
Reporting Limits
All Method Detection Limits were met.
Blanks
Concentrations of target analytes in the method blank were found to be below reportinglimits for all analyses.
Laboratory Control Samples
A Laboratory Control Sample (LCS) analysis was performed at the required frequencies,and unless otherwise noted, all parameters were within the established control limits.
Matrix Spikes
Matrix spike analyses were performed for each applicable analysis on both projectsamples and non-project samples. All parameters for the project sample matrix spikeswere within the established control limits with the following exceptions.
The Barium concentration found in sample NRG-Site Water exceeded the Matrix spikeconcentrations by four times or more, which caused the MS/MSD and RPD values to falloutside the control limits in QC Batch 120410S03. The results have been flagged withthe appropriate qualifiers and are released with no further action since the LCS andLCSD recoveries and RPDs were in control.
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Calscience Work Order No. 12-04-0440Page 3 of 3
Sediment sample NRG-Comp was used for the Organotins matrix spiking (QC Batch120409S14C) and the MS/MSD recoveries for Tetrabutyltin were above the establishedcontrol limits due to matrix interference. However, since the associated LCS/LCSDrecoveries were in control, the data are released with no further action.
Sample NRG-Comp was used for the EPA 8082 PCB Aroclors matrix spiking (QC Batch120406S17), and the MS/MSD recoveries and RPDs fell outside the control limits. Yet,the results have been flagged with the appropriate qualifiers and are released with nofurther action since the associated LCS/LCSD recoveries and RPDs were within theestablished limits.
Two PAH MS/MSD recoveries and RPDs were outside the established control limits formatrix spike sample NRG-Comp (QC Batch 120406S05A). However, since theassociated LCS/LCSD recoveries and RPDs were in control, the data are released withno further qualification.
Surrogates
Surrogate recoveries for all applicable tests and samples were within the establishedcontrol limits.
Acronyms
LCS/LCSD- Laboratory Control Sample/Laboratory Control Sample DuplicatePDS/PDSD- Post Digestion Spike/Post Digestion Spike DuplicateMS/MSD- Matrix Spike/Matrix Spike DuplicateRPD- Relative Percent Difference R
etur
n to
Con
tent
s
Page 5 of 79
Analytical Report
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 N/APreparation:
EPA 413.2MMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/06/12 04/11/12 04/11/12Sediment 120411L01NRG-Comp 12-04-0440-1-C IR 212:0313:00
-Results are reported on a dry weight basis.Result DF Qual UnitsRLParameter
mg/kgOil and Grease 93 51300
04/11/12N/A 04/11/12Solid 120411L01Method Blank 099-07-019-118 IR 212:03
Result DF Qual UnitsRLParameter
mg/kgOil and Grease 10 1ND
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
EPA 418.1MMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/06/12 04/11/12 04/11/12Sediment 120411L02NRG-Comp 12-04-0440-1-C IR 212:5213:00
-Results are reported on a dry weight basis.Result DF Qual UnitsRLParameter
mg/kgTRPH 93 51000
04/11/12N/A 04/11/12Solid 120411L02Method Blank 099-07-015-1,845 IR 212:52
Result DF Qual UnitsRLParameter
mg/kgTRPH 10 1ND
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3550/SG 10Preparation:
EPA 8015B (M)Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
-The total concentration includes individual carbon range concentrations (estimated), if any, below the RL reported as ND.Comment(s):-Results are reported on a dry weight basis.
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
EPA 8270D (M)/TQ/EIMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
-Results were evaluated to the MDL (DL), concentrations >= to the MDL (DL) but < RL (LOQ), if found, are qualified with a "J" flag.Comment(s):
-Results are reported on a dry weight basis.Parameter Result RL MDL DF Qual Parameter Result RL MDL DF QualAllethrin 1ND 0.93 0.47 Fluvalinate 1ND 0.93 0.11
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/26/12Sea Water 120411L06NRG-Site Water 12-04-0440-2-I GC 4413:3708:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8082Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8082Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/13/12Sea Water 120411L07NRG-Site Water 12-04-0440-2-K GC 5820:4908:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/17/12Sea Water 120411L04NRG-Site Water 12-04-0440-2-M GC/MS MM14:2008:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/16/12Sea Water 120411L14NRG-Site Water 12-04-0440-2-J GC/MS HHH18:5408:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
Organotins by Krone et al.Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ng/L
Instrument
04/05/12 04/09/12 04/10/12Sea Water 120409L05NRG-Site Water 12-04-0440-2-L GC/MS JJJ13:5608:30
Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 3.0 1ND Tetrabutyltin 3.0 1NDMonobutyltin 3.0 1ND Tributyltin 3.0 1NDSurrogates: REC (%) Control
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
Organotins by Krone et al.Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
-Results are reported on a dry weight basis.Comment(s):Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 5.6 139 Tetrabutyltin 5.6 1NDMonobutyltin 5.6 1ND Tributyltin 5.6 151Surrogates: REC (%) Control
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/12/12Sea Water 120411L02NRG-Site Water 12-04-0440-2-C GC/MS LL10:2908:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant SED Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3050BPreparation:
EPA 6020Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate /TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 7471A TotalPreparation:
EPA 7471AMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 7470A TotalPreparation:
EPA 7470AMethod:
Project: NRG-Long Beach Power Plant SED Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/05/12 04/10/12 04/10/12Sea Water 120410L02MNRG-Site Water 12-04-0440-2-A Mercury17:5308:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3005A TotalPreparation:
EPA 1640Method:
Project: NRG-Long Beach Power Plant SED Page 1 of 1Lab Sample
NumberDate /TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
ug/LUnits:
Instrument
04/05/12 04/11/12 04/10/12Sea Water 120410L03NRG-Site Water 12-04-0440-2-A ICP/MS 0319:5908:30
%Carbon, Total Organic 0.050 1ND EPA 9060A04/09/12N/A04/09/12%Solids, Total 0.100 1ND SM 2540 B04/09/1204/11/12mg/LSolids, Total Suspended 1.0 1ND SM 2540 D04/11/1204/11/12mg/LSulfide, Total 0.050 1ND SM 4500 S2 - D04/11/1204/06/12mg/LSulfide, Dissolved 0.050 1ND SM 4500 S2 - D04/06/1204/17/12mg/kgAmmonia (as N) 0.20 1ND SM 4500-NH3 B/C (M)04/17/12
PassLCS ME CL validation result :1Total number of ME compounds allowed :
0Total number of ME compounds :17Total number of LCS compounds :
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Quality Control - LCS/LCS Duplicate
12-04-0440
NRG-Long Beach Power Plant SED
Work Order No:Date Received:
Project:
AMEC Environment & Infrastructure9210 Sky Park Court, Suite 200San Diego, CA 92123-4302
N/A
Matrix: Aqueous or Solid
Parameter QualRPD CLRPD
%REC CL
LCS %REC
LCSD %REC
DateExtracted
DateAnalyzedMethod
Quality Control Sample ID
92 0-20280-120Carbon, Total Organic 95EPA 9060A 04/09/12N/A099-06-013-71097 0-20690-110Ammonia (as N) 91EPA 350.1 04/12/12N/A099-12-735-5594 0-20180-120Ammonia (as N) 95SM 4500-NH3 B 04/17/1204/17/12099-12-816-42
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Glossary of Terms and Qualifiers
Work Order Number:
Qualifier Definition
12-04-0440
See applicable analysis comment.*Less than the indicated value.<Greater than the indicated value.>Surrogate compound recovery was out of control due to a required sample dilution.Therefore, the sample data was reported without further clarification.
1
Surrogate compound recovery was out of control due to matrix interference. Theassociated method blank surrogate spike compound was in control and, therefore, thesample data was reported without further clarification.
2
Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was outof control due to matrix interference. The associated LCS and/or LCSD was in controland, therefore, the sample data was reported without further clarification.
3
The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPDwas in control and, therefore, the sample data was reported without further clarification.
4
The PDS/PDSD or PES/PESD associated with this batch of samples was out of controldue to a matrix interference effect. The associated batch LCS/LCSD was in control and,hence, the associated sample data was reported without further clarification.
5
Surrogate recovery below the acceptance limit.6Surrogate recovery above the acceptance limit.7Analyte was present in the associated method blank.BSample analyzed after holding time expired.BUConcentration exceeds the calibration range.ESample was extracted past end of recommended max. holding time.ETThe chromatographic pattern was inconsistent with the profile of the reference fuelstandard.
HD
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but heavier hydrocarbons were also present (or detected).
HDH
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but lighter hydrocarbons were also present (or detected).
HDL
Analyte was detected at a concentration below the reporting limit and above thelaboratory method detection limit. Reported value is estimated.
J
LCS/LCSD Recovery Percentage is within Marginal Exceedance (ME) Control Limitrange.
ME
Parameter not detected at the indicated reporting limit.NDSpike recovery and RPD control limits do not apply resulting from the parameterconcentration in the sample exceeding the spike concentration by a factor of four orgreater.
Q
The sample extract was subjected to Silica Gel treatment prior to analysis.SG% Recovery and/or RPD out-of-range.XAnalyte presence was not confirmed by second column or GC/MS analysis.Z
Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, notcorrected for % moisture. All QC results are reported on a wet weight basis.MPN - Most Probable Number
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
Calscience Work Order No.: 12-04-0440Project ID: NRG- Long Beach Power Plant
Provided below is a narrative of our analytical effort, including any unique features oranomalies encountered as part of the analysis of the sediment and water samples.
Sample Condition on Receipt
One sediment sample (housed in 16-oz glass jars) and one seawater sample wasreceived for this project on April 6, 2012. The samples were transferred to the laboratoryin an ice-chest with wet ice, following strict chain-of-custody (COC) procedures. Thetemperature of the samples upon receipt at the laboratory ranged from 1.2- 2.2°C. Allsamples were given laboratory identification numbers, logged into the LaboratoryInformation Management System (LIMS) and then stored under refrigeration pendingsediment chemistry testing and elutriate preparation.
The EET results are presented in Calscience Work Order Number 12-04-0996.
Tests Performed
Sediment:
Total Sulfide and Dissolved Sulfide by EPA 376.2MTRPH by EPA 418.1MOil and Grease by EPA 413.2MTrace Metals by EPA 6020/7471ATPH-C6-44 with Silica Gel Clean-up by EPA 8015B (M)Chlorinated Pesticides by EPA 8081APCB Congeners by EPA 8270CPAHs, Phenols and Phthalates by EPA 8270C SIMPyrethroids by EPA 8270D (M)/TQ/EIVolatile Organics by EPA 8260BTotal Organic Carbon by EPA 9060AOrganotins by Krone et al.Total Solids by SM 2540BAmmonia by SM 4500-NH3 B/C (M)Grain Size by ASTM D4464 (M)
Seawater:
TSS by SM 2540DAmmonia by EPA 350.1 (M)Total and Dissolved Sulfide by SM 4500 S2-DOil and Grease by EPA 413.2
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Calscience Work Order No. 12-04-0440Page 2 of 3
Trace Metals by EPA 1640/7470AOC Pesticides by EPA 8081APCB Aroclors by EPA 8082PCB Congeners by EPA 8270C SIMPhthalates, Phenols and PAHs by EPA 8270C SIMVolatile Organics by EPA 8260BOrganotins by Krone et al.
Data Summary
The sediment sample results in this supplemental report were not dry weight corrected.
The sediment sample was homogenized prior to preparation and analysis.
Holding times
All holding times were met.
Calibration
Frequency and control criteria for initial and continuing calibration verifications were met.
Reporting Limits
All Method Detection Limits were met.
Blanks
Concentrations of target analytes in the method blank were found to be below reportinglimits for all analyses.
Laboratory Control Samples
A Laboratory Control Sample (LCS) analysis was performed at the required frequencies,and unless otherwise noted, all parameters were within the established control limits.
Matrix Spikes
Matrix spike analyses were performed for each applicable analysis on both projectsamples and non-project samples. All parameters for the project sample matrix spikeswere within the established control limits with the following exceptions.
The Barium concentration found in sample NRG-Site Water exceeded the Matrix spikeconcentrations by four times or more, which caused the MS/MSD and RPD values to falloutside the control limits in QC Batch 120410S03. The results have been flagged withthe appropriate qualifiers and are released with no further action since the LCS andLCSD recoveries and RPDs were in control.
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Calscience Work Order No. 12-04-0440Page 3 of 3
Sediment sample NRG-Comp was used for the Organotins matrix spiking (QC Batch120409S14C) and the MS/MSD recoveries for Tetrabutyltin were above the establishedcontrol limits due to matrix interference. However, since the associated LCS/LCSDrecoveries were in control, the data are released with no further action.
Sample NRG-Comp was used for the EPA 8082 PCB Aroclors matrix spiking (QC Batch120406S17), and the MS/MSD recoveries and RPDs fell outside the control limits. Yet,the results have been flagged with the appropriate qualifiers and are released with nofurther action since the associated LCS/LCSD recoveries and RPDs were within theestablished limits.
Two PAH MS/MSD recoveries and RPDs were outside the established control limits formatrix spike sample NRG-Comp (QC Batch 120406S05A). However, since theassociated LCS/LCSD recoveries and RPDs were in control, the data are released withno further qualification.
Surrogates
Surrogate recoveries for all applicable tests and samples were within the establishedcontrol limits.
Acronyms
LCS/LCSD- Laboratory Control Sample/Laboratory Control Sample DuplicatePDS/PDSD- Post Digestion Spike/Post Digestion Spike DuplicateMS/MSD- Matrix Spike/Matrix Spike DuplicateRPD- Relative Percent Difference R
etur
n to
Con
tent
s
Page 5 of 84
Analytical Report
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 N/APreparation:
EPA 413.2MMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/06/12 04/11/12 04/11/12Sediment 120411L01NRG-Comp 12-04-0440-1-C IR 212:0313:00
Result DF Qual UnitsRLParameter
mg/kgOil and Grease 50 5720
04/11/12N/A 04/11/12Solid 120411L01Method Blank 099-07-019-118 IR 212:03
Result DF Qual UnitsRLParameter
mg/kgOil and Grease 10 1ND
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
EPA 418.1MMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/06/12 04/11/12 04/11/12Sediment 120411L02NRG-Comp 12-04-0440-1-C IR 212:5213:00
Result DF Qual UnitsRLParameter
mg/kgTRPH 50 5560
04/11/12N/A 04/11/12Solid 120411L02Method Blank 099-07-015-1,845 IR 212:52
Result DF Qual UnitsRLParameter
mg/kgTRPH 10 1ND
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3550/SG 10Preparation:
EPA 8015B (M)Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 N/APreparation:
ASTM D4464 (M)Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Parameter Result RL DF Qual Parameter RLResult DF QualClay (less than 0.00391mm) 0.01 113.78 Medium Sand (0.25 to 0.5mm) 0.01 1 0.85Silt (0.00391 to 0.0625mm) 0.01 167.74 Coarse Sand (0.5 to 1mm) 0.010 1NDTotal Silt and Clay (0 to 0.0625mm) 0.01 181.52 Very Coarse Sand (1 to 2mm) 0.010 1NDVery Fine Sand (0.0625 to 0.125mm) 0.01 1 9.88 Gravel (greater than 2mm) 0.010 1NDFine Sand (0.125 to 0.25mm) 0.01 1 7.75
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
EPA 8270D (M)/TQ/EIMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
-Results were evaluated to the MDL (DL), concentrations >= to the MDL (DL) but < RL (LOQ), if found, are qualified with a "J" flag.Comment(s):Parameter Result RL MDL DF Qual Parameter Result RL MDL DF QualAllethrin 1ND 0.50 0.26 Fluvalinate 1ND 0.50 0.057
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/26/12Sea Water 120411L06NRG-Site Water 12-04-0440-2-I GC 4413:3708:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/13/12Sea Water 120411L06NRG-Site Water 12-04-0440-2-I GC 4416:4608:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8082Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8082Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/13/12Sea Water 120411L07NRG-Site Water 12-04-0440-2-K GC 5820:4908:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/17/12Sea Water 120411L04NRG-Site Water 12-04-0440-2-M GC/MS MM14:2008:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/16/12Sea Water 120411L14NRG-Site Water 12-04-0440-2-J GC/MS HHH18:5408:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
Organotins by Krone et al.Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ng/L
Instrument
04/05/12 04/09/12 04/10/12Sea Water 120409L05NRG-Site Water 12-04-0440-2-L GC/MS JJJ13:5608:30
Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 3.0 1ND Tetrabutyltin 3.0 1NDMonobutyltin 3.0 1ND Tributyltin 3.0 1NDSurrogates: REC (%) Control
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
Organotins by Krone et al.Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
Units: ug/L
Instrument
04/05/12 04/11/12 04/12/12Sea Water 120411L02NRG-Site Water 12-04-0440-2-C GC/MS LL10:2908:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3050BPreparation:
EPA 6020Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate /TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 7471A TotalPreparation:
EPA 7471AMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 7470A TotalPreparation:
EPA 7470AMethod:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/05/12 04/10/12 04/10/12Sea Water 120410L02MNRG-Site Water 12-04-0440-2-A Mercury17:5308:30
AMEC Environment & Infrastructure 04/06/12Date Received:9210 Sky Park Court, Suite 200 12-04-0440Work Order No:San Diego, CA 92123-4302 EPA 3005A TotalPreparation:
EPA 1640Method:
Project: NRG-Long Beach Power Plant /1015100209 Page 1 of 1Lab Sample
NumberDate /TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
ug/LUnits:
Instrument
04/05/12 04/11/12 04/10/12Sea Water 120410L03NRG-Site Water 12-04-0440-2-A ICP/MS 0319:5908:30
%Carbon, Total Organic 0.050 1ND EPA 9060A04/09/12N/A04/09/12%Solids, Total 0.100 1ND SM 2540 B04/09/1204/11/12mg/LSolids, Total Suspended 1.0 1ND SM 2540 D04/11/1204/11/12mg/LSulfide, Total 0.050 1ND SM 4500 S2 - D04/11/1204/06/12mg/LSulfide, Dissolved 0.050 1ND SM 4500 S2 - D04/06/1204/17/12mg/kgAmmonia (as N) 0.20 1ND SM 4500-NH3 B/C (M)04/17/12
PassLCS ME CL validation result :1Total number of ME compounds allowed :
0Total number of ME compounds :17Total number of LCS compounds :
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Glossary of Terms and Qualifiers
Work Order Number:
Qualifier Definition
12-04-0440
See applicable analysis comment.*Less than the indicated value.<Greater than the indicated value.>Surrogate compound recovery was out of control due to a required sample dilution.Therefore, the sample data was reported without further clarification.
1
Surrogate compound recovery was out of control due to matrix interference. Theassociated method blank surrogate spike compound was in control and, therefore, thesample data was reported without further clarification.
2
Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was outof control due to matrix interference. The associated LCS and/or LCSD was in controland, therefore, the sample data was reported without further clarification.
3
The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPDwas in control and, therefore, the sample data was reported without further clarification.
4
The PDS/PDSD or PES/PESD associated with this batch of samples was out of controldue to a matrix interference effect. The associated batch LCS/LCSD was in control and,hence, the associated sample data was reported without further clarification.
5
Surrogate recovery below the acceptance limit.6Surrogate recovery above the acceptance limit.7Analyte was present in the associated method blank.BSample analyzed after holding time expired.BUConcentration exceeds the calibration range.ESample was extracted past end of recommended max. holding time.ETThe chromatographic pattern was inconsistent with the profile of the reference fuelstandard.
HD
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but heavier hydrocarbons were also present (or detected).
HDH
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but lighter hydrocarbons were also present (or detected).
HDL
Analyte was detected at a concentration below the reporting limit and above thelaboratory method detection limit. Reported value is estimated.
J
LCS/LCSD Recovery Percentage is within Marginal Exceedance (ME) Control Limitrange.
ME
Parameter not detected at the indicated reporting limit.NDSpike recovery and RPD control limits do not apply resulting from the parameterconcentration in the sample exceeding the spike concentration by a factor of four orgreater.
Q
The sample extract was subjected to Silica Gel treatment prior to analysis.SG% Recovery and/or RPD out-of-range.XAnalyte presence was not confirmed by second column or GC/MS analysis.Z
Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, notcorrected for % moisture. All QC results are reported on a wet weight basis.MPN - Most Probable Number
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
Calscience Work Order No.: 12-12-0795Project ID: POLB – NRG Sediment – Round 2
Provided below is a narrative of our analytical effort, including any unique features oranomalies encountered as part of the analysis of the sediment samples.
Sample Condition on Receipt
Three sediment samples were received for this project on December 12, 2012. Thesamples were transferred to the laboratory in an ice-chest with wet ice, following strictchain-of-custody (COC) procedures. The temperature of the samples upon receipt atthe laboratory was 1.6°C. All samples were logged into the Laboratory InformationManagement System (LIMS), given laboratory identification numbers and then stored inrefrigeration units pending chemistry testing.
Any COC discrepancies were noted in the Sample Anomaly Form.
Tests Performed
Particle Size by ASTM D4464 (M)Dissolved Sulfide by EPA 376.2 (M)Total Sulfide by EPA 376.2 (M)Oil and Grease by EPA 413.2 (M)TRPH by EPA 418.1 (M)Trace Metals by EPA 6020Mercury by EPA 7471AC6-C44 by EPA 8015 (M)Chlorinated Pesticides by EPA 8081APCB Aroclors by EPA 8082Volatile Organics by EPA 8260BPCB Congeners by EPA 8270C SIMSemivolatile Organics by EPA 8270C SIMTotal Organic Carbon by EPA 9060AOrganotins by Krone et al.Pyrethroids by EPA 8270DM (M)/TQ/EITotal Solids by SM 2540BAmmonia by SM 4500-NH3 B/C (M)
Data Summary
Holding times
All holding times were met.
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Calscience Work Order No. 12-12-0795Page 2 of 3
Calibration
Frequency and control criteria for initial and continuing calibration verifications were met.
Blanks
Concentrations of target analytes in the method blank were found to be below reportinglimits for all testing.
Reporting Limits
The Method Detection Limits were met. All sample results were evaluated to theReporting Limit.
Laboratory Control Samples
A Laboratory Control Sample (LCS) analysis was performed for each applicable test. Allparameters were within established control limits except the following.
For 8260 the ETBE recovery was low. The recovery was in the Marginal Exceedancerange. Since one ME is allowed per LCS the batch was acceptable, the data arereleased with no further action.
Matrix Spikes
Matrix spiking was performed at the required frequencies on both project and non-project samples. All parameters for the project sample matrix spikes were within theacceptable control limits with the following exceptions.
For Metals by EPA 6020, several metals were outside the established control limit due tothe concentration of the metals in the spiked sample. Given that the batch associatedLCS/LCSDs recoveries and RPDs were within the acceptable limits, the data arereleased with no further action.
For Mercury by EPA 7471A, the concentration of mercury in the sample was four timesor more higher than the spike amount, therefore the recoveries could not be calculated.The LCS/LCSD recoveries and RPDs were within acceptable limits, the data arereleased with no further action.
For Aroclors by EPA 8082, the recoveries and RPDs were outside the establishedcontrol limit. Since the batch LCS/LCSDs recoveries and RPDs were within acceptablelimits, the data are released with no further action.
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Calscience Work Order No. 12-12-0795Page 3 of 3
Surrogates
Surrogate recoveries for all applicable tests and samples were within acceptable controllimits.
Acronyms
LCS/LCSD- Laboratory Control Sample/Laboratory Control Sample DuplicatePDS/PDSD- Post Digestion Spike/Post Digestion Spike DuplicateMS/MSD- Matrix Spike/Matrix Spike DuplicateME-Marginal ExceedanceRPD- Relative Percent Difference
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Analytical Report
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550B (M)Preparation:
-Results are reported on a dry weight basis.Comment(s):Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 5.4 1ND Tetrabutyltin 5.4 1NDMonobutyltin 5.4 1ND Tributyltin 5.4 1NDSurrogates: REC (%) Control
-Results are reported on a dry weight basis.Comment(s):Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 4.7 1ND Tetrabutyltin 4.7 1NDMonobutyltin 4.7 1ND Tributyltin 4.7 1NDSurrogates: REC (%) Control
-Results are reported on a dry weight basis.Comment(s):Parameter Result RL DF Qual Parameter RLResult DF QualDibutyltin 5.0 1ND Tetrabutyltin 5.0 1NDMonobutyltin 5.0 1ND Tributyltin 5.0 1NDSurrogates: REC (%) Control
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 7471A TotalPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3050BPreparation:
PassLCS ME CL validation result :1Total number of ME compounds allowed :
1Total number of ME compounds :19Total number of LCS compounds :
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Glossary of Terms and Qualifiers
Work Order Number:
Qualifier Definition
12-12-0795
See applicable analysis comment.*Less than the indicated value.<Greater than the indicated value.>Surrogate compound recovery was out of control due to a required sample dilution. Therefore, the sampledata was reported without further clarification.
1
Surrogate compound recovery was out of control due to matrix interference. The associated method blanksurrogate spike compound was in control and, therefore, the sample data was reported without furtherclarification.
2
Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was out of control due tomatrix interference. The associated LCS and/or LCSD was in control and, therefore, the sample data wasreported without further clarification.
3
The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPD was in control and,therefore, the sample data was reported without further clarification.
4
The PDS/PDSD or PES/PESD associated with this batch of samples was out of control due to a matrixinterference effect. The associated batch LCS/LCSD was in control and, hence, the associated sampledata was reported without further clarification.
5
Surrogate recovery below the acceptance limit.6Surrogate recovery above the acceptance limit.7Analyte was present in the associated method blank.BSample analyzed after holding time expired.BUConcentration exceeds the calibration range.ESample was extracted past end of recommended max. holding time.ETThe chromatographic pattern was inconsistent with the profile of the reference fuel standard.HDThe sample chromatographic pattern for TPH matches the chromatographic pattern of the specifiedstandard but heavier hydrocarbons were also present (or detected).
HDH
The sample chromatographic pattern for TPH matches the chromatographic pattern of the specifiedstandard but lighter hydrocarbons were also present (or detected).
HDL
Analyte was detected at a concentration below the reporting limit and above the laboratory methoddetection limit. Reported value is estimated.
J
LCS/LCSD Recovery Percentage is within Marginal Exceedance (ME) Control Limit range.MEParameter not detected at the indicated reporting limit.NDSpike recovery and RPD control limits do not apply resulting from the parameter concentration in thesample exceeding the spike concentration by a factor of four or greater.
Q
The sample extract was subjected to Silica Gel treatment prior to analysis.SG% Recovery and/or RPD out-of-range.XAnalyte presence was not confirmed by second column or GC/MS analysis.Z
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.MPN - Most Probable Number
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 ExtractionPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550BPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3540CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 N/APreparation:
Parameter Result Qual Parameter Result QualClay (less than 0.00391mm) 35.61 Medium Sand (0.25 to 0.5mm) NDSilt (0.00391 to 0.0625mm) 60.68 Coarse Sand (0.5 to 1mm) NDTotal Silt and Clay (0 to 0.0625mm) 96.28 Very Coarse Sand (1 to 2mm) NDVery Fine Sand (0.0625 to 0.125mm) 3.72 Gravel (greater than 2mm) NDFine Sand (0.125 to 0.25mm) ND
Parameter Result Qual Parameter Result QualClay (less than 0.00391mm) 31.25 Medium Sand (0.25 to 0.5mm) NDSilt (0.00391 to 0.0625mm) 64.15 Coarse Sand (0.5 to 1mm) NDTotal Silt and Clay (0 to 0.0625mm) 95.40 Very Coarse Sand (1 to 2mm) NDVery Fine Sand (0.0625 to 0.125mm) 3.88 Gravel (greater than 2mm) NDFine Sand (0.125 to 0.25mm) 0.72
Parameter Result Qual Parameter Result QualClay (less than 0.00391mm) 28.26 Medium Sand (0.25 to 0.5mm) 0.010Silt (0.00391 to 0.0625mm) 58.34 Coarse Sand (0.5 to 1mm) NDTotal Silt and Clay (0 to 0.0625mm) 86.60 Very Coarse Sand (1 to 2mm) NDVery Fine Sand (0.0625 to 0.125mm) 8.82 Gravel (greater than 2mm) NDFine Sand (0.125 to 0.25mm) 4.57
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3545Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3550B (M)Preparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 7471A TotalPreparation:
AMEC Environment & Infrastructure 12/12/12Date Received:9210 Sky Park Court, Suite 200 12-12-0795Work Order No:San Diego, CA 92123-4302 EPA 3050BPreparation:
PassLCS ME CL validation result :1Total number of ME compounds allowed :
1Total number of ME compounds :19Total number of LCS compounds :
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Glossary of Terms and Qualifiers
Work Order Number:
Qualifier Definition
12-12-0795
See applicable analysis comment.*Less than the indicated value.<Greater than the indicated value.>Surrogate compound recovery was out of control due to a required sample dilution. Therefore, the sampledata was reported without further clarification.
1
Surrogate compound recovery was out of control due to matrix interference. The associated method blanksurrogate spike compound was in control and, therefore, the sample data was reported without furtherclarification.
2
Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was out of control due tomatrix interference. The associated LCS and/or LCSD was in control and, therefore, the sample data wasreported without further clarification.
3
The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPD was in control and,therefore, the sample data was reported without further clarification.
4
The PDS/PDSD or PES/PESD associated with this batch of samples was out of control due to a matrixinterference effect. The associated batch LCS/LCSD was in control and, hence, the associated sampledata was reported without further clarification.
5
Surrogate recovery below the acceptance limit.6Surrogate recovery above the acceptance limit.7Analyte was present in the associated method blank.BSample analyzed after holding time expired.BUConcentration exceeds the calibration range.ESample was extracted past end of recommended max. holding time.ETThe chromatographic pattern was inconsistent with the profile of the reference fuel standard.HDThe sample chromatographic pattern for TPH matches the chromatographic pattern of the specifiedstandard but heavier hydrocarbons were also present (or detected).
HDH
The sample chromatographic pattern for TPH matches the chromatographic pattern of the specifiedstandard but lighter hydrocarbons were also present (or detected).
HDL
Analyte was detected at a concentration below the reporting limit and above the laboratory methoddetection limit. Reported value is estimated.
J
LCS/LCSD Recovery Percentage is within Marginal Exceedance (ME) Control Limit range.MEParameter not detected at the indicated reporting limit.NDSpike recovery and RPD control limits do not apply resulting from the parameter concentration in thesample exceeding the spike concentration by a factor of four or greater.
Q
The sample extract was subjected to Silica Gel treatment prior to analysis.SG% Recovery and/or RPD out-of-range.XAnalyte presence was not confirmed by second column or GC/MS analysis.Z
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.MPN - Most Probable Number
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
Calscience Work Order No.: 12-04-0996Project ID: NRG- Long Beach Power Plant
Provided below is a narrative of our analytical effort, including any unique features oranomalies encountered as part of the analysis of the elutriate samples.
Sample Condition on Receipt
One seawater sample and one sediment sample was received for this project on April17, 2012 (under CEL Work Order #12-04-0440). The samples were transferred to thelaboratory in an ice-chest with wet ice, following strict chain-of-custody (COC)procedures at a temperatures ranging from 1.5-2.2°C). Upon receipt at the lab, thesamples were given laboratory identification numbers, logged into the LaboratoryInformation Management System (LIMS) and stored in refrigeration units pendingelutriate preparation.
Elutriate Preparation
The elutriate sample(s) were prepared in accordance with the Modified Elutriate TestProcedure as presented by Palermo (1986). This procedure is also referred to as theEffluent Elutriate Test as presented in the Inland Testing Manual (1998).
Prior to use, all labware was thoroughly cleaned in accordance with standard laboratoryoperating procedures (detergent wash, acid bath, rinse and flush with D.I. water). Inaccordance with the method, a slurry concentration of 150 g/L (dry weight basis) wasused. The calculated volumes of sediment (or treated sediment) and seawater from thesite were mixed, aerated, then allowed to settle before the supernatant was siphoned foranalysis. The particulars are described as follows.
At room temperature, the slurry mixture was mixed vigorously for 5 minutes in a largeHDPE jar. Following mixing, the slurry was poured into a plastic 4-liter graduatedcylinder. The slurry was aerated vigorously using compressed air delivered via Teflontubing to the bottom of the cylinder for one hour, then allowed to settle for twenty-fourhours. The supernatant was then siphoned off using Teflon tubing and collected in cleancontainers.
The supernatant was then filtered using a 0.45 micron filter (for metals) and centrifuged(for organics) and transferred to new plastic and glass containers. The samples werethen given laboratory identification numbers, logged in to LIMS and stored inrefrigeration units pending analysis. The elutriate samples were analyzed for Metals byEPA Method 1640/7470, PAHs, Phenols and Phthalates by EPA 8270C SIM,Chlorinated Pesticides by EPA 8081A, PCB Congeners by EPA 8270C SIM, PCBAroclors by EPA 8082, VOCs by EPA 8260B and Organotins by Krone et al. Analysisof the Site Water sample for these same constituents was also performed as part of thisanalytical effort (reference CEL WO# 12-04-0440).
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Calscience Work Order No. 12-04-0996Page 2 of 2
Data Summary
Holding times
All holding time requirements were met.
Calibration
Frequency and control criteria for initial and continuing calibration verifications were met.
Blanks
Concentrations of target analytes in the method blanks were found to be below reportinglimits for all tests.
Laboratory Control Samples
Laboratory Control Sample (LCS/LCSD) analyses were performed for each applicablemethod at the required frequencies, and all parameters were within the control limits foreach method.
Matrix Spikes
Due to limited volume, matrix spikes could not be performed on project samples.
Acronyms
LCS/LCSD- Laboratory Control Sample/Laboratory Control Sample DuplicateMS/MSD- Matrix Spike/Matrix Spike DuplicateRPD- Relative Percent Difference R
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Page 4 of 29
Analytical Report
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8081AMethod:
Project: NRG-Long Beach Power Plant Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8082Method:
Project: NRG-Long Beach Power Plant Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIMMethod:
Project: NRG-Long Beach Power Plant Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
EPA 8270C SIM PCB CongenersMethod:
Project: NRG-Long Beach Power Plant Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3510CPreparation:
Organotins by Krone et al.Method:
Project: NRG-Long Beach Power Plant Page 1 of 1Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant Page 1 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 5030CPreparation:
EPA 8260BMethod:
Project: NRG-Long Beach Power Plant Page 2 of 2Lab Sample
NumberDate/TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 7470A Filt.Preparation:
EPA 7470AMethod:
Project: NRG-Long Beach Power Plant Page 1 of 1
Lab SampleNumber
Date/TimeCollected QC Batch IDClient Sample Number Matrix
DatePrepared
Date/TimeAnalyzedInstrument
04/12/12 04/23/12 04/24/12Sea Water 120423L04MNRG Comp EET Elutriate 12-04-0996-1-E Mercury16:2617:00
AMEC Environment & Infrastructure 04/17/12Date Received:9210 Sky Park Court, Suite 200 12-04-0996Work Order No:San Diego, CA 92123-4302 EPA 3005A Filt.Preparation:
EPA 1640Method:
Project: NRG-Long Beach Power Plant Page 1 of 1Lab Sample
NumberDate /TimeCollected
DatePrepared
Date/TimeAnalyzed QC Batch IDClient Sample Number Matrix
PassLCS ME CL validation result :1Total number of ME compounds allowed :
0Total number of ME compounds :17Total number of LCS compounds :
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .
RPD - Relative Percent Difference , CL - Control Limit
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Glossary of Terms and Qualifiers
Work Order Number:
Qualifier Definition
12-04-0996
See applicable analysis comment.*Less than the indicated value.<Greater than the indicated value.>Surrogate compound recovery was out of control due to a required sample dilution.Therefore, the sample data was reported without further clarification.
1
Surrogate compound recovery was out of control due to matrix interference. Theassociated method blank surrogate spike compound was in control and, therefore, thesample data was reported without further clarification.
2
Recovery of the Matrix Spike (MS) or Matrix Spike Duplicate (MSD) compound was outof control due to matrix interference. The associated LCS and/or LCSD was in controland, therefore, the sample data was reported without further clarification.
3
The MS/MSD RPD was out of control due to matrix interference. The LCS/LCSD RPDwas in control and, therefore, the sample data was reported without further clarification.
4
The PDS/PDSD or PES/PESD associated with this batch of samples was out of controldue to a matrix interference effect. The associated batch LCS/LCSD was in control and,hence, the associated sample data was reported without further clarification.
5
Surrogate recovery below the acceptance limit.6Surrogate recovery above the acceptance limit.7Analyte was present in the associated method blank.BSample analyzed after holding time expired.BUConcentration exceeds the calibration range.ESample was extracted past end of recommended max. holding time.ETThe chromatographic pattern was inconsistent with the profile of the reference fuelstandard.
HD
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but heavier hydrocarbons were also present (or detected).
HDH
The sample chromatographic pattern for TPH matches the chromatographic pattern ofthe specified standard but lighter hydrocarbons were also present (or detected).
HDL
Analyte was detected at a concentration below the reporting limit and above thelaboratory method detection limit. Reported value is estimated.
J
LCS/LCSD Recovery Percentage is within Marginal Exceedance (ME) Control Limitrange.
ME
Parameter not detected at the indicated reporting limit.NDSpike recovery and RPD control limits do not apply resulting from the parameterconcentration in the sample exceeding the spike concentration by a factor of four orgreater.
Q
The sample extract was subjected to Silica Gel treatment prior to analysis.SG% Recovery and/or RPD out-of-range.XAnalyte presence was not confirmed by second column or GC/MS analysis.Z
Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, notcorrected for % moisture. All QC results are reported on a wet weight basis.MPN - Most Probable Number
7440 Lincoln Way, Garden Grove, CA 92841-1427 TEL:(714) 895-5494 FAX: (714) 894-7501. .