Lower Santa Ana River Maintenance Dredging Project

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LOWER SANTA ANA RIVER MAINTENANCE DREDGING PROJECT

FINAL

SAMPLING AND ANALYSIS PLAN

Prepared for:

County of Orange OC Public Works 300 N. Flower Street Santa Ana, CA 92703

Prepared by:

Moffatt & Nichol 3780 Kilroy Airport Way Long Beach, CA 90806

February 2015

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

TABLE OF CONTENTS

1 INTRODUCTION ...... 1 Project Summary ...... 1 Site Description ...... 2 Roles and Responsibilities ...... 2 2 SITE HISTORY ...... 8 Prior Channel Maintenance ...... 8 Previous Sediment Testing in the Lower Santa Ana River ...... 9 Past Chemical Spills ...... 16 Previous Sediment Testing at Proposed Receiving Beaches ...... 16 3 METHODS OF SAMPLE COLLECTION AND ANALYSIS ...... 20 Dredge Design ...... 20 Sampling Study Design ...... 30 Physical and Chemical Testing – Beach Suitability Analysis ...... 32 Biological Testing – Ocean Suitability Analysis ...... 38 Field Notes ...... 39 Sample Transport and Chain-of-Custody Procedures ...... 39 Holding Times ...... 39 Quality Assurance / Quality Control ...... 40 Supplementary Chemical Testing ...... 41 4 ACRONYMS AND ABBREVIATIONS ...... 42 5 REPORTING ...... 43 6 REFERENCES ...... 44

Attachments

Attachment A. Analytes, Methods, and Detection Limits for Physical and Chemical Testing

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figures

Figure 1-1. Location Map ...... 4 Figure 1-2. Vicinity Map ...... 5 Figure 1-3. Potential Beneficial Re-use Sites ...... 6 Figure 1-4. Potential Offshore Disposal Site ...... 7 Figure 2-1. USACE 2005 Maintenance Project Limits ...... 9 Figure 2-2. Tier 1 Data – Sheet 1 ...... 12 Figure 2-3. Tier 1 Data – Sheet 2 ...... 13 Figure 2-4. Tier 1 Data – Sheet 3 ...... 14 Figure 2-5. Tier 1 Data – Sheet 4 ...... 15 Figure 2-6. Newport Beach Composite Grain Size Envelope Sampling Locations (M&N 2012 from Newfields 2009)...... 17 Figure 2-7. Newport Beach Composite Grain Size Envelope (Newfields 2009) .. 18 Figure 2-8. Seal Beach Composite Grain Size Envelope (M&N 2014) ...... 19 Figure 2-9. Huntington State Beach Composite Grain Size Envelope ...... 19 Figure 3-1. Plan View of Proposed Sampling Locations (Composite Areas A through D) ...... 21 Figure 3-2. Plan View of Proposed Sampling Locations (Composite Areas E through H) ...... 22 Figure 3-3. Plan View of Proposed Sampling Locations (Composite Area I) ...... 23 Figure 3-4. Plan View of Proposed Sampling Locations (Composite Area J) ...... 24 Figure 3-5. Representative Cross-sections of Proposed Dredging Footprint ...... 25 Figure 3-6. Proposed Dredge Cut and Boring Locations (Sheet 1)...... 26 Figure 3-7. Proposed Dredge Cut and Boring Locations (Sheet 2)...... 27 Figure 3-8. Proposed Dredge Cut and Boring Locations (Sheet 3)...... 28 Figure 3-9. Proposed Dredge Cut and Boring Locations (Sheet 4)...... 29 Figure 3-10. Proposed Sampling Locations at Newport Beach ...... 34 Figure 3-11. Proposed Sampling Locations at Huntington Bluffs ...... 35 Figure 3-12. Proposed Sampling Locations at Seal Beach – East Beach ...... 36 Figure 3-13. Proposed Sampling Locations at Seal Beach – Surfside-Sunset Beach ...... 37 Figure 3-14. Receiving Beach Grain Size Sampling Schematic ...... 38 Figure 3-15. LA-3 Reference Area ...... 39

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Tables

Table 1-1. Estimated Dredge Quantities from the LSAR ...... 1 Table 1-2. Project Team and Responsibilities ...... 3 Table 1-3. Key Project Contacts ...... 3 Table 2-1. LSAR Maintenance Dredging History ...... 8 Table 2-2. LSAR RSM Sediment Testing Data (M&N 2014) ...... 10 Table 2-3. USACE Sediment Testing Data (USACE 2003) ...... 10 Table 3-1. Proposed Dredging Volumes ...... 20 Table 3-2. Boring Information ...... 31

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Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

1 INTRODUCTION Orange County Public Works (OCPW) proposes to carry out maintenance dredging of the Lower Santa Ana River (LSAR) located in the County of Orange within the cities of Huntington Beach, Newport Beach and Costa Mesa, California (Figure 1-1). The LSAR Maintenance Dredging Project (Project) would remove shoals and restore the design flood capacity of the channel from river station 194+00 (just upstream of Adams Avenue) downstream to Station 8+00 (Pacific Ocean outlet). River stations and the proposed dredge footprint are shown in Figure 1-2.

Sediments to be dredged from the channel require an evaluation of sediment quality in order to support planning and permitting for dredging and placement / beneficial reuse options. This Sampling and Analysis Plan (SAP) outlines procedures and quality assurance / quality control (QA/QC) requirements for the sampling and testing of proposed export sediments from the Project. This SAP is submitted to the Southern California Dredged Materials Management Team (DMMT) for their review and concurrence prior to any sampling being conducted. The DMMT is comprised of a number of member agencies including (but not limited to): the U.S. Army Corps of Engineers (USACE) Los Angeles District, U.S. Environmental Protection Agency (USEPA), California Coastal Commission (CCC), and the Regional Water Quality Control Board (RWQCB).

Project Summary

Maintenance dredging is needed to remove shoals and to restore flood capacity of the LSAR channel between Stations 8+00 to 194+00. Based on a May 2013 survey, the estimated maximum potential volume of export is 1.1 million cubic yards (cy), which includes a 2-foot overdredge allowance between Stations 8+00 to 139+00 and a 25% contingency for ongoing sedimentation / incidental sloughing of dredge cut side slopes during construction. The proposed earthwork volumes per channel reach are provided in Table 1-1. Fill is proposed in some channel reaches to backfill depressions in the channel bottom.

Table 1-1. Estimated Dredge Quantities from the LSAR Fill Rounded Cut (CY) Net (CY) (CY) Totals (CY) Volumes to Design Invert Elevation Station 8+00 (Downstream Project Limit / 92,833 0 92,833 90,000 Ocean Outlet) to 18+00 (PCH Bridge) Station 18+00 to 92+00 (Victoria Street 330,644 212 330,432 330,000 Bridge) Station 92+00 to 139+40 (Bicycle Bridge) 51,139 12,536 38,603 40,000 Station 139+40 to 173+00 (Adams Avenue 43,857 23,845 20,012 20,000 Bridge) Station 173+00 to 194+00 (Upstream Project 49,133 555 48,578 50,000 Limit) Total to Design Invert Elevation, Based on 567,606 37,148 530,458 530,000 2013 Bathymetric Survey Total to Design Invert Elevation with 25% Sedimentation Factor 663,073 670,000

Volumes with Overdredge Allowance One-Foot Overdredge – Station 8+00 to 139+40 184,370 180,000 Total with 25% Sedimentation Factor and One-Foot Overdredge 847,443 850,000

Two-Foot Overdredge – Station 8+00 to 139+40 368,741 370,000 TOTAL MAXIMUM POTENTIAL EXPORT VOLUME (Total with 25% 1,031,813 1,100,000 Sedimentation Factor and Two-Foot Overdredge)

Channel maintenance is anticipated to be carried out by hydraulic dredge from river stations 8+00 to 139+00 and excavated in the dry via conventional earthwork equipment from stations 139+00 to 194+00. Accordingly, a dredge overdepth allowance is included in the downstream segment between 8+00 and 139+00. Final construction methods will be determined by the construction

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan contractor and dictated by site-specific constraints such as bridge clearances, cut depths, and timing. The maintenance dredging Project is planned to begin in Spring 2016.

The Project proposes beneficial reuse of export material generated for the purposes of beach nourishment. Four beach placement sites are being considered, which include:

 Newport Beach (on-beach or nearshore),  Huntington Bluffs (on-beach or nearshore),  Seal Beach – East Beach (on-beach), and  Seal Beach – Surfside Sunset (on-beach).

These potential placement sites are shown in Figure 1-3. Nearshore placement sites would entail placement of dredged sediment between the water depths of approximately -15 and -30 feet, mean lower low water (MLLW). On-beach placement would consist of building out (widening in the seaward direction) the existing beach berm some distance before sloping to meet the water’s edge, as is typically done for beach nourishment projects. The beach berm at the receiving beaches being considered are at an elevation of approximately +12 feet, MLLW. Discussions are underway with each of these cities regarding receipt of the dredged sediments. It is envisioned that a preferred placement site or sites will be identified within the subsequent SAP Results Report.

Based on previous sediment testing, it is anticipated that the dredge sediment will be suitable for beach nourishment. However, as a fallback option, this SAP includes an allowance for Tier III testing in order to consider offshore placement at LA-3. The location of LA-3 relative to the Project site is shown in Figure 1-4.

Site Description The Project is located in the County of Orange within the cities of Huntington Beach, Newport Beach and Costa Mesa, California. The approximate geographic center of the project is defined by 6043898.536 East and 2184970.99 North (coordinate system NAD83 State Plane California Zone 6 FIPS 0406, US Feet). The river channel is owned and operated by the Orange County Flood Control District (OCFCD). The duties of the OCFCD are carried out by the OCPW.

The Project site consists of a rectangular dredge footprint 18,600 feet in length with variable width. The channel along this reach is earthen-lined with stabilized banks. Bank stabilization consists of a concrete box cross-section from Station 194+00 to 150+00 and a rock-revetted slopes from Station 150+00 to the ocean. The channel is tidally-influenced to approximately Station 148+00.

Roles and Responsibilities The Project team members and specific roles for conducting the work outlined in this SAP are provided in Table 1-2. Key project contacts are provided in Table 1-3.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Table 1-2. Project Team and Responsibilities Coastal Calscience Moffatt & Resources Environmental Nautilus Task/Responsibility OCPW Nichol Management, Laboratories, Environmental Inc. Inc.* Project Management X X Project Implementation X X SAP Development X Agency Coordination X X Sampling Site Plan/ X Positioning Sediment Sampling & X X Logging Compositing/Sub- X X sampling Grain Size Analysis & X QA/QC Chemical Analysis & X QA/QC Laboratory Biological X Testing Final Report X * State certified testing laboratory (Cal-ELAP No. 03220CA) using USEPA and USACE approved methodologies.

Table 1-3. Key Project Contacts James Volz Kim Garvey Project Manager Project Manager Orange County Public Works Moffatt & Nichol 300 N. Flower Street 3780 Kilroy Airport Way, Suite 650 Santa Ana, CA 92703 Long Beach, CA 90806 Tel.: 714.647.3904 Tel.: 562.426.9551 [email protected] [email protected] Brian Leslie Rick Ware Project Scientist Marine Biologist Moffatt & Nichol Coastal Resources Management, Inc. 1660 Hotel Circle North, Suite 500 3334 E. Coast Highway San Diego, CA 92108 Corona del Mar, CA 92625 Tel.:619.220.6050 Tel.: 949.412.9446 [email protected] [email protected]

Bob Stearns or Danielle Gonsman Client Services Director – Analytical Testing Calscience Environmental Laboratories, Inc. 7440 Lincoln Way Garden Grove, CA 92841-1427 Tel.: (714) 895-5494 x202 [email protected]

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 1-1. Location Map

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 1-2. Vicinity Map

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 1-3. Potential Beneficial Re-use Sites

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 1-4. Potential Offshore Disposal Site

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

2 SITE HISTORY

The Santa Ana River watershed is approximately 3,000 square miles and contains portions of Los Angeles, Riverside, San Bernardino and Orange counties. The flow of the Santa Ana River begins in the San Bernardino Mountains and discharges into the ocean at Huntington Beach, a distance of approximately 96 miles. The watershed area is vastly urban and is home to more than 4.5 million people. The river has 50 tributaries as well as numerous stormdrain inputs.

The channel in the Project Area was stabilized in 1994 as part of the Santa Ana River Mainstem Project, which was led by the USACE. A more naturalized channel configuration at that same location existed prior to stabilization. The project was designed to provide flood protection to the growing urban communities of Orange, Riverside and San Bernardino Counties. After completion of the Santa Ana River Mainstem Project and the maintenance dredging in 2005, this portion of the federal Project was de-authorized and the channel was relinquished back to the Orange County Public Works.

As of 2010, the Project Area is not 303(d) listed for any surface water contamination (USEPA 2014). However, the shoreline immediately north of the river mouth is 303(d) listed for PCBs. An upstream segment of the river that spans from approximately Interstate 5 upstream to Green River is 303(d) listed for pathogens (USEPA 2014).

Maintenance dredging and prior sediment testing in the LSAR is presented in this section as well as a database search for past chemical spills that may have impacted river sediments.

Prior Channel Maintenance

The dredging history of the LSAR is provided in Table 2-1.

Table 2-1. LSAR Maintenance Dredging History Total Dredging Volume Contami Lead Dredge Depth and Placement Year Dredged nants of Notes Agency Location Area(s) (Approx.) (cy, Concern Approx.) Nearshore in Varied. Established Initial channel 1992 - None the vicinity of 1,200,000 USACE channel design stabilization 1994 known. the LSAR depths. project. mouth. West Newport To design depths Nearshore, San within two channel Clemente segments (i.e. river None Beach, least 2005 240,000 USACE - stations 18+00 to known. tern nesting 32+00 and 150+00 island in LSAR to 190+00) marsh, upland commercial use Dry beach to Unknown depth. None LSAR mouth 2012 30,000 OCPW the south of Ocean outlet. known. opening. river mouth. Dry beach to Unknown depth. None LSAR mouth 2014 30,000 OCPW the south of Ocean outlet. known. opening. river mouth. ~50,000 cy at Design depth to Material Seal Beach, concrete apron. screened of None East Beach. 2014 100,000 OCPW Between 405 vegetation, known. ~50,000 cy freeway and debris and fine- stockpiled on 194+00. fraction. channel edge. Total 1,600,000

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Approximately 1.6 million cy of sediment has been dredged from the LSAR since its stabilization in 1994. The majority of the dredged materials have been beneficially reused for beach nourishment. The most significant maintenance event occurred in 2005, led by the USACE. At that time, the LSAR was dredged and excavated to design depths between stations 18+00 and 32+00 (from PCH and extending 1,400 feet upstream) and stations 150+00 to 190+00 (4,000 linear feet of channel centered at about Adams Avenue), as shown in Figure 2-1. Approximately 100,000 cubic yards were removed by hydraulic dredge between stations 18+00 and 32+00, which were placed in the nearshore off of the City of Newport Beach. Approximately 140,000 cy was also excavated from Station 150+00 to 190+00 and was hauled out by truck to various placement sites. Large trees and thick vegetation were also removed from this upstream reach during that time.

Figure 2-1. USACE 2005 Maintenance Project Limits

Previous Sediment Testing in the Lower Santa Ana River A number of prior sediment characterizations have been conducted within the Lower Santa Ana River. These evaluations are described in this section.

2.2.1 Lower Santa Ana River Regional Sediment Management Study (M&N 2014)

The USACE LSAR Regional Sediment Management Study assessed the technical feasibility and impacts of potential projects that would beneficially use future dredge sediments from the LSAR. Included a gradation analysis of the river; eight grain-size samples were collected within the

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Maintenance Dredge Project Area. As shown in Table 2-2, the gradation ranged from 0.0 to 4.6% fines. Sample locations and gradation results are shown in Figure 2-2 through Figure 2-5.

Table 2-2. LSAR RSM Sediment Testing Data (M&N 2014) Name Percent Fines (%) Boring Depth (ft,bgs) SAR-ADA-R 2.0 2 RSM-19 4.4 2 RSM-17 0.2 2 RSM-18 1.1 2 RSM-16 4.6 2 RSM-15 0.1 2 RSM-13 0.1 2 to 3 RSM-14 0.0 2 RSM-20 0.6 2

2.2.2 Lower Santa Ana River Dredging (USACE 2003) Sediment analysis was conducted in 2000 and 2002 as part of the USACE’s 2005 LSAR maintenance project. A total of 17 borings were collected within the Project Area. Sediment was characterized with depth such that multiple gradation samples were collected with depth. Table 2-3 presents summary results of this sampling effort. If multiple sediment gradation data existed for a location, the results were averaged to represent a vertical composite. Maximum sample depth was approximately 8 feet below the existing grade. The gradation of soils ranged between 1.0% to 28.5% fines, with an average gradation of 5.6% fines. Sample locations and gradation results are shown in Figure 2-2 through Figure 2-5.

Table 2-3. USACE Sediment Testing Data (USACE 2003) Max USCS Soil Number of Percent Fines Year Boring Classifications with Sample ID Samples Notes (%)* Collected Depth (ft, Depth Collected bgs) (Shallow – Deep) AH-1-00 3.3 2000 7.8 4 SP, SP, SP SP-SM - AH-2-00 5.7 2000 3.9 3 SP-SM, SP, ML ML at 4.9' bgs SM layer at 4.6' bgs AH-3-00 12.0 2000 3.9 2 SP, SM, CH is 20% fines AH-4-00 2.5 2000 3.0 2 SP, SP - AH-5-00 2.0 2000 3.9 2 SP, SP, CH CH layer at 3.9' bgs SH-1-00 3.5 2000 2.6 2 SP-SM, SP - SM sample is 29% SH-2-00 10.3 2000 1.3 3 SP, SP, SM fines SH-3-00 1.0 2000 3.0 2 SP, SP, CL CL layer at 3.0 bgs SH-4-00 1.0 2000 3.0 2 SP, SP, CL - SH-5-00 3.0 2000 3.6 2 SP, SP-SM, ML ML layer at 3.6' bgs SH-7-00 28.5 2000 1.9 2 SP, ML - SM sample is 30% SH-8-00 15.5 2000 1.3 2 SP, SM fines SH-09-02 2.0 2002 2.3 1 SP - SH-10-02 1.0 2002 3.0 1 SP - SH-13-02 1.0 2002 1.6 1 SP - SH-14-02 2.0 2002 2.6 1 SP - SH-15-02 1.0 2002 2.6 1 SP - *If multiple gradation data existed with depth, results were averaged to represent a vertical composite sample.

2.2.3 LSAR River Bacteriological Sediment Investigation (Weston 2004)

Bacteriological investigation of the LSAR and Newport Beach Groin Field (receiving beach). A total of 32 samples were collected in the LSAR and 6 from the receiving beach. Samples were taken to a depth of 2-feet bgs from the LSAR and surficial grabs (top 1 cm) on the beach. The study found virtually no total or fecal coliforms in any of the samples collected. Enterococci

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan densities were low in nearly all samples collected. Slightly elevated densities at a few sites appeared to be associated with isolated pockets that were not indicative of the sampling area.

2.2.4 LSAR Upstream Channel Maintenance

The LSAR channel is currently being maintained between Stations 261+00 (405 Freeway) and 194+00 by the OCPW, just upstream from the Project site. Excavated material from the river channel was screened to remove vegetation, debris and a portion of the fines from the sediment using a 3/8” screen. The processed material is being placed in stockpiles on the concrete apron along the river bank. Grain size and chemistry data was captured from two stockpiles in July 2014. The sediment was analyzed for the following analytes:

 Total solids  Volatile solids  Dissolved sulfide  Total sulfide  Oil and Grease  TRPH  Trace metals (EPA 6020/7471A)  TPH-Diesel  TPH-Motor Oil  TPH-Gas  Chlorinated Pesticides  PCBs  PAHs  Total Organic Carbon  Organotins

The majority of results were found to be non-detect (ND) or below the respective ERL threshold. 4,4'-DDE was found at 5.9 mg/kg, which is marginally above the ERL threshold of 2.2 mg/kg but significantly below the ERM level of 27 mg/kg. Grain size was also analyzed for the two stockpiles. The mean grain size was determined to be 0.65 and 0.71 mm. Fines content was 1.4 and 12%. Chemistry and grain size reports from the laboratory can be made available upon request.

Approximately 30,000 cy of these stockpiled sediments were recently used for beach nourishment at East Beach in Seal Beach. The nourishment was an emergency response measure to severe beach erosion associated with large hurricane swells during summer 2014.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 2-2. Tier 1 Data – Sheet 1

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 2-3. Tier 1 Data – Sheet 2

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 2-4. Tier 1 Data – Sheet 3

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 2-5. Tier 1 Data – Sheet 4

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Past Chemical Spills Research was performed to identify any contaminant spills that had the potential to impact the quality of the sediment in the Project area. Hazardous Materials (HazMat) spill notifications can be found on the California Office of Emergency Services (Cal OES) website (http://www.calema.ca.gov/HazardousMaterials/Pages/Spill-Release-Reporting.aspx). The Cal OES database was searched for Orange County and the Cities of Huntington Beach, Costa Mesa and Newport Beach to identify any potential spill hot spots within the dredge footprint. Fourteen records were found, dating back to 2006. Of these records, six were sewage and the remaining were motor oil, gasoline, diesel, paint thinner and unknown liquids. The records state the location of the spill and whether the spill impacted a waterway. Based on review of these records, the spills did not impact the Santa Ana River channel.

The manager of the OCPW Monitoring Programs was also contacted to perform a database search of the County Pollution Notification/Investigation Requests. No records were found that were anticipated to leave a “legacy effect” on the river’s sediment quality. Since 2003-2004, a majority of the dry weather runoff in the LSAR is diverted into the sanitary sewer system before it enters the river. Accordingly, contaminants during any spill events in dry weather would be contained and/or diverted before entering the river. Additionally, the manager of water quality for OC Health was contacted to discuss the potential for sewage spills to impact Santa Ana River sediment quality. He confirmed that bacteriological impacts from any sewage spills would be short-lived due to the natural processes. In summary, there are no indications of specific spill incidents which would be likely to affect the LSAR sediment or direct the need for specific sampling locations.

Previous Sediment Testing at Proposed Receiving Beaches Prior sediment gradation testing has been conducted at, or in the vicinity of, the proposed Seal Beach and Newport Beach receiving beaches. These prior test results are presented in general in this section. No chemistry data was available for any of the proposed receiving beaches.

2.4.1 Newport Beach A composite grain-size envelope was developed for the Newport Beach groin field in 2009 from two transects collected from 42nd and 50th streets (Figure 2-6). This envelope is located within the proposed on-beach placement site. As shown in Figure 2-7, the gradation of the receiving beach ranges from 0% to 34% fines.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

LSAR River Mouth

Figure 2-6. Newport Beach Composite Grain Size Envelope Sampling Locations (M&N 2012 from Newfields 2009)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

1.0

0.9

0.8

0.7

0.6

0.5

0.4 Fraction Passing

0.3

0.2

Newport Beach Groin Field- Finest 0.1 Newport Beach Groin Field - Coarsest 0.0 1000 100 10 1 0.1 0.01 Grain Size (mm)

Figure 2-7. Newport Beach Composite Grain Size Envelope (Newfields 2009)

2.4.2 Seal Beach A composite grain size envelope was prepared for East Beach in the City of Seal Beach in 2008. As shown in Figure 2-8, the gradation of the receiving beach ranges from 2.2 to 56% fines. The envelope was generated from transects collected in the vicinity of the Seal Beach Pier. This site is in the immediate vicinity of the proposed East Beach placement site.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

1.0

0.9

0.8

0.7

0.6

0.5

0.4 Fraction Passing 0.3

0.2 Seal Beach Pier 2008 - Finest 0.1 Seal Beach Pier 2008 - Coarsest 0.0 1000 100 10 1 0.1 0.01 Grain Size (mm)

Figure 2-8. Seal Beach Composite Grain Size Envelope (M&N 2014)

2.4.3 Huntington State Beach A composite grain-size envelope was developed for the east end of Huntington State Beach in 2007 (Figure 2-9). The gradation of the receiving beach ranges from 0.5% to 55% fines. This site is approximately one mile west of the proposed Newport Beach placement site and four miles southeast of the Huntington Bluffs site.

1.0

0.9

0.8

0.7

0.6

0.5

0.4 Fraction Passing 0.3

0.2 Huntington State Beach - Finest 0.1 Huntington State Beach - Coarsest 0.0 1000 100 10 1 0.1 0.01 Grain Size (mm)

Figure 2-9. Huntington State Beach Composite Grain Size Envelope

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

3 METHODS OF SAMPLE COLLECTION AND ANALYSIS This section outlines the field and laboratory methodology used in the collection and analysis of grain size and chemical samples.

Dredge Design Sedimentation throughout the Project area since the stabilization project is of various depths; thus, the depth of cut and fill needed to reestablish design depths changes throughout the site. However, the majority of the cut volumes would be generated from the lower reaches of the river where the greatest amount of shoaling has occurred. A plan view of the proposed dredge footprint is provided in Figure 3-1 through Figure 3-4. Representative Project cross sections are provided in Figure 3-5.

The Project site was divided into 10 composite areas to represent approximately equal dredge volumes of export. With the exception of composite areas A, I and J, each composite area represents approximately 100,000 cy of total export, which includes overdredge and sedimentation allowances, as shown in Table 3-1. Three borings are proposed within each of the composite areas to characterize the area. Five borings are proposed within Composite areas A, I and J to characterize the higher total export volumes from these areas. The composite areas selected are also believed to have contiguous features (i.e., vegetation, tidal influence, etc.).

Table 3-1. Proposed Dredging Volumes Avg. Net Cut Overdredge Total Proposed Approx. Cut Sedimentation Composite River Volume Volume (cy, Export Borings Per Area Depth (cy, Assumed ID Station (Approx., Assumed 2- Volume Composite (Acres) (ft, 25%) cy) foot) (cy) Area bgs) 8+00 to A 8.2 >7 118,000 29,500 26,434 173,934 5 18+00 18+00 B to 5.8 7 50,000 12,500 18,569 81,069 3 24+00 24+00 C to 5.7 6.5 50,000 12,500 18,502 81,002 3 30+50 30+50 D to 6.9 4.5 50,000 12,500 22,249 84,749 3 38+50 38+50 E to 7.9 4 50,000 12,500 25,380 87,880 3 47+50 47+50 F + 9.7 3 50,000 12,500 31,148 93,648 3 58+50 58+50 G to 15.2 2 50,000 12,500 49,156 111,656 3 76+00 76+00 H to 13.0 1.5 40,000 10,000 41,985 91,985 3 91+00 91+00 I to 42.2 1.5 42,000 10,500 136,212 188,712 5 139+00 139+00 J to 44.4 2 64,000 16,000 - 80,000 5 194+00 TOTAL 159 564,000 141,000 369,634 1,074,634 36

Plan views of proposed cut depths relative to the proposed core / composite area locations are shown in Figure 3-6 through Figure 3-9.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-1. Plan View of Proposed Sampling Locations (Composite Areas A through D)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-2. Plan View of Proposed Sampling Locations (Composite Areas E through H)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-3. Plan View of Proposed Sampling Locations (Composite Area I)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-4. Plan View of Proposed Sampling Locations (Composite Area J)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-5. Representative Cross-sections of Proposed Dredging Footprint

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-6. Proposed Dredge Cut and Boring Locations (Sheet 1)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-7. Proposed Dredge Cut and Boring Locations (Sheet 2)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-8. Proposed Dredge Cut and Boring Locations (Sheet 3)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-9. Proposed Dredge Cut and Boring Locations (Sheet 4)

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Sampling Study Design Prior testing of the Project site identified a relatively uniform, sandy deposit underlain by a clay layer at some locations. A total of 36 borings, representing 10 composite areas, were positioned throughout the Project site in order to provide adequate spatial distribution of export material. Samples were positioned within each of the composite areas to capture areas of the deepest cuts (i.e., sediment shoals within the channel), significant tributary confluence points and at the location of stormdrain outfalls. Details regarding the proposed borings and composite areas are provided in Table 3-2. Storm drain locations are shown in Figure 3-1 through Figure 3-4.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Table 3-2. Boring Information Target Proposed Proposed Core Composit Individual Sample ID Northing * Easting * Composit Length e ID Core e Analysis (ft) Analysis ** 7 Physical SAR15-1A 6041466 2176964 Chemical SAR15-2A 6041716 2176759 7 Physical & Physical, SAR15-3A 6041938 2176993 7 COMP A Physical Biological SAR15-4A 6041890 2177209 7 Physical (if deemed necessary) SAR15-5A 6041867 2177421 5 Physical SAR15-1B 6041980 2177716 5 Physical Chemical SAR15-2B 6042112 2177525 7 Physical & Physical, COMP B Biological 6042179 2178049 SAR15-3B 6 Physical (if deemed necessary) SAR15-1C 6042348 2178188 6 Physical Chemical SAR15-2C 6042212 2178339 7 Physical & Physical, COMP C Biological 6042556 2178652 SAR15-3C 6 Physical (if deemed necessary) SAR15-1D 6042645 2178983 5 Physical Chemical SAR15-2D 6042425 2179414 5 Physical & Physical, COMP D Biological 6042698 2179474 SAR15-3D 5 Physical (if deemed necessary) SAR15-1E 6042583 2179659 5 Physical Chemical SAR15-2E 6042781 2179804 5 Physical & Physical, COMP E Biological 6042610 2180096 SAR15-3E 4 Physical (if deemed necessary) SAR15-1F 6043074 2180625 4 Physical Chemical SAR15-2F 6043237 2181216 4 Physical & Physical, COMP F Biological 6043010 2181391 SAR15-3F 4 Physical (if deemed necessary) SAR15-1G 6043163 2182118 4 Physical Chemical SAR15-2G 6043500 2182718 4 Physical & Physical, COMP G Biological 6043718 2183112 SAR15-3G 4 Physical (if deemed necessary) SAR15-1H 6043528 2183571 4 Physical Chemical SAR15-2H 6043815 2184019 4 Physical & Physical, COMP H Biological 6043866 2184515 SAR15-3H 4 Physical (if deemed necessary) 4 Physical SAR15-1I 6044001 2185307 Chemical SAR15-2I 6044179 2186063 4 Physical & Physical, SAR15-3I 6044414 2186949 4 COMP I Physical Biological SAR15-4I 6044983 2188147 4 Physical (if deemed necessary) SAR15-5I 6044971 2189129 4 Physical 4 Physical SAR15-1J 6045305 2189509 Chemical SAR15-2J 6045459 2191351 4 Physical & Physical, SAR15-3J 6046008 2192400 4 COMP J Physical Biological SAR15-4J 6046107 2193064 4 Physical (if deemed necessary) SAR15-5J 6046260 2194385 4 Physical * Coordinates in NAD83 State Plane Zone 6, feet ** All aliquot samples will be retained and archived for supplemental chemistry testing, if deemed necessary.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Target depths for each of the borings were generated based on the proposed depth of cut in that location plus a 1-foot allowance for overdredge from Stations 8+00 to 139+00. Each boring is proposed to be vertically composited along the entire length of sample (excluding debris from the surficial layer) if no significant stratification exists. If multiple geologic layers are encountered with depth, the layer(s) may be sampled and analyzed separately in order to characterize this geologic layer. Boring logs will be generated for each of the borings to document soil properties with depth. Z-layer testing is not proposed, as the project is not a remediation, restoration or a contaminant hot spot removal project.

Samples are proposed to be collected via a telescoping hand auger with a bucket head. Various auger heads may be used in the field to retain sediments of various gradations and moisture content. Decontamination of the soil sampler between sites will be performed using Alconox rinse.

Sampling is proposed to be conducted during low water events (i.e., low tide, dry weather conditions). Proposed boring locations may be repositioned in the field to avoid sensitive biological habitat or due to access limitations. Notification will be given to the USACE and USEPA if the sampling plan, as described herein, varies substantially to that which was approved.

Once the material for a composite sample has been collected and placed into the same stainless steel pan, the samples will be stirred and homogenized until a consistent color and texture is achieved (USEPA and USACE 1998). A sufficiently homogenized sample will be prepared to provide adequate volume for laboratory analyses. Portions of each composite sample will be placed in appropriate containers obtained from the laboratory. Each sample container will be labeled with the project name, sample/composite identification, type of analysis to be performed, date and time, and initials of person preparing the sample.

Physical and Chemical Testing – Beach Suitability Analysis

Samples will be analyzed consistent with USACE and USEPA established protocols for the disposal of dredged material as outlined in the Inland Testing Manual (USEPA and USACE 1998). Sand Compatibility and Opportunistic Use Program (SCOUP) guidelines (Moffatt & Nichol 2006) will also be used to evaluate the material’s compatibility for potential beach placement options. These guidelines instruct:

 A composite gradation curve will be developed for the source material and will be compared with the receiver site grain size distribution envelope(s). If the source material composite gradation curve falls within the limits of the grain size distribution envelope(s) of the receiving beach(es), then the material is deemed compatible with the native beach material.  The fraction of fines in beach fill sediment may exceed the existing sediment at the receiving beach placement site by 10%.  If the source material has higher fines content, the material could be placed at the waterline at low tide for immediate dispersion into the nearshore zone, rather than being placed on the subaerial beach.

Bulk chemistry testing will be completed on composite samples of the borings as a screening mechanism for chemical compatibility. Sediment chemistry results will be compared to NOAA Screening Quick Reference Table (SQUIRT) Guidelines (Buchman 2008). These guidelines are used to screen sediments for contaminant concentrations that might cause biological effects and to identify sediments for further toxicity testing. For any given contaminant, the Effects Range Low (ERL) guideline represents the 10th percentile concentration value in the NOAA database that might be expected to cause adverse biological effects. If chemistry results reveal any constituent above SQUIRT or other approved USACE established screening level, further

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan chemical testing may be required. Testing will be completed per USACE Inland Testing Manual (ITM) guidelines.

Physical and chemical testing of the proposed export sediment and receiving beaches are presented in this section.

3.3.1 Dredge Material Testing At least one gradation curve will be generated from each of the 36 proposed boring locations. These curves will be compared with the prospective receiving beaches grain size envelope to evaluate the materials’ compatibility. Grain size analysis will also be completed on the horizontal composite samples to be tested for chemistry (10 total). Thus, a total of 44 gradation samples are proposed within this SAP. Samples shall be sieved consistent with American Society for Testing and Materials (ASTM) D 422-63 (Standard Test Method of Particle-Size Analysis of Soils, ASTM 2007). Since the materials are relatively coarse-grained, Atterberg testing of the material is not proposed.

A total of 10 composite samples are proposed to be tested for chemistry. These samples are proposed to be composited horizontally by combining proportional aliquots from each individual boring collected within the proposed composite areas. Each of the samples from the individual borings will be archived at the laboratory (stored frozen for 6 months) for supplemental sampling, if necessary. Sample locations will be georeferenced and labeled according to depth in relation to the existing ground surface (i.e., bgs). Chemical samples will be analyzed per USACE ITM guidelines. The complete list of analytes and their associated method detection limits are listed in Attachment A.

3.3.2 Receiving Beach Testing Composite grain size envelopes are proposed to be generated for each of the proposed receiving beaches. Two, shore-perpendicular transects will be collected from each of these beaches to characterize the site. Proposed sample locations are shown in Figure 3-10 through Figure 3- 13.Gradation samples will be collected along the transects at the elevations of +12, +6, 0, -6, -12, -18, -24, and -30 feet (MLLW), as shown schematically in Figure 3-14. The composite grain size envelope will be compared with dredge materials to determine physical compatibility.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-10. Proposed Sampling Locations at Newport Beach

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-11. Proposed Sampling Locations at Huntington Bluffs

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-12. Proposed Sampling Locations at Seal Beach – East Beach

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-13. Proposed Sampling Locations at Seal Beach – Surfside-Sunset Beach

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-14. Receiving Beach Grain Size Sampling Schematic

Biological Testing – Ocean Suitability Analysis If the majority of the export is not found to be physically suitable (i.e., greater than 20% fines) for beach nourishment purposes, biological testing requirements and procedures detailed in the Ocean Testing Manual (OTM) will be used to evaluate the suitability of each testing area composite sample for unconfined aquatic (open water) placement. Tier III testing would be initiated after completion of the proposed Tier II testing and would be focused on composite areas of concern. Sediment samples to be analyzed for Tier III testing would be collected from the same locations identified in this SAP at volumes sufficient for the analysis.

Tier III evaluations will include statistical comparisons with sediments collected from the LA-3 offshore reference area. The offshore reference area is shown in Figure 3-15. As each phase of testing is completed, critical data review will be performed to direct subsequent test phases. To fully evaluate sediments for open water placement, the composite samples will require the following testing:

 Grain size analyses.  Bulk sediment chemistry.  Whole sediment bioassays using amphipods and polychaete worms.  Water column suspended particulate phase (SPP) bioassays using mysids, juvenile teleost fish, and bivalve larvae.  Chemical analyses of dredge site water and standard elutriates prepared from the composite sediments and site water. Because organic compounds are usually not detected in elutriate and background water samples above screening criteria and because of the insolubility of organic compounds, elutriate and background water samples will only be analyzed for total metals and total suspended solids (TSS).  Bioaccumulation exposures using clams and polychaete worms.  Tissue analyses based on sediment contaminant concentrations, theoretical bioaccumulation potential, and consultation with the SC-DMMT.

Except for the SPP bioassays and elutriate chemistry, these same tests will be performed on a sample collected from the LA-3 reference area.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Figure 3-15. LA-3 Reference Area

Field Notes Field notes will be maintained during sampling and compositing operations. Included in the field notes will be the following:

 Name of person(s) collecting and logging the samples.  General weather conditions and other general observations.  Date and time of collection.  Sample station number and sample description.  Any deviation from the approved sampling plan.

Sample Transport and Chain-of-Custody Procedures A chain-of-custody record for each sample will be maintained throughout all sampling activities and will accompany samples and shipment to the laboratory. Information tracked by the chain-of- custody records in the laboratory include sample identification number, date and time of sample receipt, analytical parameters required, location and conditions of storage, date and time of removal from and return to storage, signature of person removing and returning the sample, reason for removing from storage, and final disposition of the sample.

Holding Times All samples will be transported to the laboratories within the holding times required for the analytes to be tested. Furthermore, all samples for physical and chemical analysis will be maintained at the testing laboratory at the appropriate temperature for the analytes. Sediment samples reserved for potential supplementary testing will be stored under chain-of-custody by the analytical laboratory.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Quality Assurance / Quality Control Quality assurance procedures to be used for sediment testing are consistent with methods described in the ITM (USEPA and USACE 1991). For trace analysis, the procedures include documentation of the following criteria for each sample matrix type: analytical reproducibility, analytical detection limits, recovery of in situ metals and organics and sample chain-of-custody documentation.

The quality assurance objectives for testing are detailed in individual Laboratory QA Manuals, USEPA/USACE 1991, and USEPA SW-846. Objectives for accuracy and precision involve all aspects of the testing process including:

. Methods and Standard Operating Procedures (SOPs); . Calibration Methods and Frequency; . Data Analysis, Validation and Reporting; . Internal Quality Control; . Preventive Maintenance; and . Procedures to Assure Data Accuracy and Completeness.

3.8.1 Sample Storage and Tracking Sample chain-of-custody sheets, sample receipt logs, sample holding, and sample labeling procedures are detailed in individual laboratory SOPs and are audited periodically by Control staff. Sample storage conditions and holding times are adhered to strictly. Samples are archived throughout the testing period until the final report is accepted.

3.8.2 Chemistry QC Samples Environmental sample matrix spike and matrix spike duplicate analysis will be performed at a rate of 5%. In the absence of adequate sample quantity to perform matrix spiking for all matrix types, either the imaginary matrix as described in USEPA SW-846 or a laboratory solid (e.g., sodium sulfite) will be used for preparing matrix spikes. Matrix spikes are from an environmental sample which is split into three separate aliquots. One aliquot is analyzed free from matrix spike introduction. A known concentration of the analyte of interest is added to the other two aliquots prior to sample preparation and analysis. Both percent recovery and relative percent difference are reported for matrix spikes/matrix spike duplicates. Spike data can provide an indication of matrix bias or interference on analyte recovery. Duplicate data can provide an indication of laboratory precision. Method or reagent blanks will be analyzed at a frequency of 5% or for every analytical batch, whichever is greater. Analytical batches will consist of 20 or fewer samples, therefore one batch will be created for this project. Results of all laboratory QC analyses will be reported with the final data. Any QC samples that fail to meet the QC criteria specified in the methodology or in this SAP will be identified and the corresponding data appropriately qualified in the final report. All Quality Assurance/Quality Control records for the various testing programs will be kept on file for review by regulatory agency personnel. It is also anticipated that USACE, RWQCB, and/or USEPA personnel may be present during sampling and may visit the laboratory during testing.

3.8.3 Data Analysis, Validation and Reporting Physical and chemical tests are to be performed consistent with protocols and conditions listed in laboratory SOPs. Raw data and study records are checked to ensure that required test conditions are within specifications cited in the SOPs. Major deviations (e.g. those that could potentially affect test results) from protocol must be approved by both the client and the Quality Control Manager. Unforeseen circumstances that may affect the integrity of the study are reported with the test results. The data, analysis and report are also reviewed for accuracy by the Quality Control Manager.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

3.8.4 Report The field sampling and laboratory analytical report will consist of logs of individual borings, a brief discussion of field and laboratory methods, and a summary of the results of the testing program. For this project, results from statistical analyses may also be reported. These analyses would consist of appropriate F - or t-statistics to compare chemical contamination at the test site sediment and reference site. Statistical significance will be reported at the 95% confidence level (e.g. a=0.05). Any chemical concentrations reported for the source site that are significantly different from the reference site will be compared with recognized guidelines for sediment quality (e.g. Buchman, 2008). Appendices of the laboratory analyses, including final results and quality control and assurance data will be provided. The report will be in a form appropriate for submittal to the USACE.

Supplementary Chemical Testing The outlined chemistry testing will be completed as a screening mechanism of the material. Supplemental testing may be conducted if testing results reveals a constituent to be above established screening levels. Further testing may include confirmation tests or analysis of the individual samples that made up a chemistry composite sample. Supplemental testing would be conducted on samples archived and stored frozen at the laboratory. Samples will be archived for a period of for six months.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

4 ACRONYMS AND ABBREVIATIONS

ASTM American Society for Testing and Materials PCB Polychlorinated Biphenyl BHC Benzene Hexachloride PDS Post Digestion Spike BLK Method or Procedural Blank PDSD Post Digestion Spike Duplicate BMP Best Management Practice PAH PPB Parts Per Billion Polyaromatic Hydrocarbon PPM Parts Per Million BS Blank Spike PVC Polyvinyl Chloride BSD Blank Spike Duplicate RBC Risk-Based Concentration CAD Confined Aquatic Disposal RL Reporting Limit CD Compact Disc RPD Relative Percent Difference CESPD Corps of Engineers South Pacific Division RSLs Regional Screening Levels for Cleanup of CHHSL California Human Health screening Level Superfund CV Coefficient of Variation SAP Sampling and Analysis Plan CY Cubic Yards SAPR Sampling and Analysis Results Report CRM Certified Reference Material SCDMMT Southern California Dredge Material DDD Dichlorodiphenyldichloroethane Management Team DDE Dichlorodiphenyldichloroethylene SCOUP Sand Compatibility Opportunistic Use DDT Dichlorodiphenyltrichloroethane Program DGPS Differential Global Positioning Satellite SLRR San Luis Rey River DUP Laboratory Replicates SOPs Standard Operating Procedures ERL NOAA Effects Range Low SP Solid Phase ERM NOAA Effects Range Medium SPP Suspended Particulate Phase GPS Global Positioning Satellite SRM Standard Reference Material HHMSSL Human Health Medium – Specific STLC Title 22 Soluble Threshold Limit Screening Levels Concentration HDPE High-density Polyethylene SURR Surrogate Analysis ITM Inland Testing Manual SWQCB State Water Resources Control Board LCL Lower Control Limit TOC Total Organic Carbon LCS Laboratory Control Spike TRPH Total Recoverable Hydrocarbons LDPE Low-density Polyethylene TTLC Title 22 Total Threshold Limit LPC Limiting Permissible Concentration Concentration LSD Least Significant Difference UCL Upper Control Limit MDL Method Detection Limit USACE U.S. Army Corps of Engineers MLLW Mean Lower Low Water USEPA U.S. Environmental Protection Agency MS Matrix Spike QA Quality Assurance MSD Matrix Spike Duplicate QC Quality Control MSD Minimum Significant Difference QUAL Qualifier ND Not Detected USCS Unified Soil Classification System NOAA National Oceanic and Atmospheric WQC Water Quality Criteria Administration ODMDS Ocean Dredge Material Disposal Site

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

5 REPORTING Findings from the SAP will be summarized in a report that will compare the results to established sediment quality guidelines. The report will detail sampling and testing methods and present results in a summarized form using figures and tables, where appropriate. The final report documentation shall contain the following information:

 Introduction –Project description and history.  Site Maps – Vicinity Map, Plan View, and Cross-sectional Views.  Boring Logs – Logs of fieldwork completed at the source site.  Methods and Materials - Inventory of all methodology and materials used to implement the proposed SAP.  Results – Includes results from all chemical and grain-size analysis completed as part of the proposed SAP.  QA/QC information – Includes all raw data sheets, spike, and recovery information.  Compatibility Analysis / Discussion – Detailed analysis of chemical and grain-size testing and the compatibility between the source and receiving beach site.  Field Sheets  Photographic Documentation  References

The final document will be completed once all sampling results are obtained and data analysis has been conducted. The completed document will be submitted and presented to the Southern California DMMT.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

6 REFERENCES American Society for Testing and Materials (ASTM).2007. Standard test method for particle-size analysis of soils. D422-63, West Conshohocken, Pa.

Buchman, M.F. 2008. NOAA Screening Quick Reference Tables, NOAA OR&R Report 08-1, Seattle WA. Office of Response and Restoration Division, National Oceanic and Atmospheric Administration, 34 pages. Moffatt & Nichol. 2006. Final Sand Compatibility and Opportunistic Use Program Plan. Prepared for SANDAG and the Coastal Sediment Management Workgroup, February 2006. ______.2014. Lower Santa Ana River Regional Sediment Management Study, Potential Project Assessments Report. Prepared for the U.S. Army Corps of Engineers. February 2014. U.S. Army Corps of Engineers. 2003. Lower Santa Ana River Dredging, Dredge Plan set. Prepared under the direction of Colonel Richard G. Thompson. June 13th, 2003.

U.S. Environmental Protection Agency. 2014. My WATERS Mapper. http://watersgeo.epa.gov/. Accessed on December 23, 2014

U. S. Environmental Protection Agency (USEPA) and U. S. Army Corps of Engineers (USACE). 1991. Evaluation of Dredged Material Proposed for Ocean Disposal. Testing Manual. EPA 503/8-91-001. (Also known as “Green Book.”). Retrieved from http://www.epa.gov/owow/oceans/gbook/gbook.pdf. February.

______. 1998. Inland Testing Manual (ITM), Evaluation of Dredged Material Proposed for Discharge in Waters of the U. S. - Testing Manual. EPA reference 823-B-98-004, USACE Office of Water, February 1998.

Newfields. 2009. Sediment Grain Size Evaluation of Four Potential Receiver Sites for Marina Park Sands, Newport Beach, California. Prepared for the City of Newport Beach. November 2009.

Weston, 2004. Final Report for United States Army Corps of Engineers Lower Santa Ana River Sediment Investigation. Prepared for State Water Resources Control Board. October 4, 2004.

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

Attachment A. Analytes, Methods, and Detection Limits for Physical and Chemical Testing GROUPINGS Attributes Analytical Method MDLs1 TRLs2 MDLt3 TRLt4 Units Grain Size Plumb (1981) NA NA % Conventionals Ammonia 350.1M 0.04 0.5 mg/kg TOC USEPA 9060A 0.07 0.2 % Moisture 160.3 NA NA % TSS SM 2540 D 5 5 mg/L TVS SM 2540E NA NA % TPH SW-846 NA NA mg/kg TRPH 1664M 1.6 25 mg/kg Metals Arsenic USEPA 6020 0.051 0.2 mg/kg Cadmium USEPA 6020 0.005 0.2 mg/kg Chromium USEPA 6020 0.017 0.2 mg/kg Copper USEPA 6020 0.018 0.2 mg/kg Lead USEPA 6020 0.009 0.2 mg/kg Mercury USEPA 7471A 0.001 0.04 mg/kg Nickel USEPA 6020 0.016 0.2 mg/kg Selenium USEPA 6020 0.035 0.2 mg/kg Silver USEPA 6020 0.004 0.2 mg/kg Zinc USEPA 6020 0.26 2 mg/kg Organotins Dibutyltin Krone 1989 0.6 6 µg/kg Monobutyltin Krone 1989 0.97 6 µg/kg Tetrabutyltin Krone 1989 0.36 6 µg/kg Tributyltin Krone 1989 0.33 6 µg/kg PAHs 1-Methylnapthalene EPA 8270C SIM 1.04 20 µg/kg 2-Methylnapthalene EPA 8270C SIM 1.04 20 µg/kg 2,4,5-Trichlorophenol EPA 8270C SIM 1.5 10 µg/kg 2,4,6-Trichlorophenol EPA 8270C SIM 3.6 20 µg/kg 2,4-Dichlorophenol EPA 8270C SIM 2.7 20 µg/kg 2,4-Dimethylphenol EPA 8270C SIM 3.1 20 µg/kg 2,4-Dinitrophenol EPA 8270C SIM 63 1000 µg/kg 2-Chlorphenol EPA 8270C SIM 3.4 20 µg/kg 2-Methylnapthalene EPA 8270C SIM 0.92 20 µg/kg Acenaphthene EPA 8270C SIM 0.76 20 µg/kg Acenaphthylene EPA 8270C SIM 0.73 20 µg/kg Anthracene EPA 8270C SIM 0.66 20 µg/kg Benzo(a)anthracene EPA 8270C SIM 1.01 20 µg/kg Benzo(a)pyrene EPA 8270C SIM 0.64 20 µg/kg Benzo (b) Fluoranthene EPA 8270C SIM 0.77 20 µg/kg

1 Method Detection Limit (dry weight) for sediment 2 Target Reporting Limit (dry weight) for sediment 3 Method Detection Limit (dry weight) for tissue 4 Target Reporting Limit (dry weight) for tissue

A-1

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

GROUPINGS Attributes Analytical Method MDLs1 TRLs2 MDLt3 TRLt4 Units Benzo (g,h,i) Perylene EPA 8270C SIM 1.14 20 µg/kg Benzo (k) Fluoranthene EPA 8270C SIM 0.96 20 µg/kg Chrysene EPA 8270C SIM 0.76 20 µg/kg Dibenz (a,h) Anthracene EPA 8270C SIM 0.53 20 µg/kg Fluoranthene EPA 8270C SIM 0.78 20 µg/kg Fluorene EPA 8270C SIM 0.7 20 µg/kg Indeno (1,2,3-c,d) Pyrene EPA 8270C SIM 0.66 20 µg/kg Naphthalene EPA 8270C SIM 0.83 20 µg/kg Pentachlorophenol EPA 8270C SIM 88 1000 µg/kg Phenanthrene EPA 8270C SIM 1.08 20 µg/kg Pyrene EPA 8270C SIM 0.82 20 µg/kg Total PAHs EPA 8270C SIM µg/kg PCBs PCB 018 USEPA 8082A ECD 0.086 0.5 µg/kg PCB 028 USEPA 8082A ECD 0.53 0.5 µg/kg PCB 037 USEPA 8082A ECD 0.12 0.5 µg/kg PCB 044 USEPA 8082A ECD 0.25 0.50 µg/kg PCB 049 USEPA 8082A ECD 0.095 0.50 µg/kg PCB 052 USEPA 8082A ECD 0.15 0.50 µg/kg PCB 066 USEPA 8082A ECD 0.1 0.50 µg/kg PCB 070 USEPA 8082A ECD 0.15 0.50 µg/kg PCB 074 USEPA 8082A ECD 0.1 0.50 µg/kg PCB 077 USEPA 8082A ECD 0.082 0.50 µg/kg PCB 081 USEPA 8082A ECD 0.07 0.50 µg/kg PCB 087 USEPA 8082A ECD 0.15 0.50 µg/kg PCB 099 USEPA 8082A ECD 0.079 0.50 µg/kg PCB 101 USEPA 8082A ECD 0.078 0.50 µg/kg PCB 105 USEPA 8082A ECD 0.053 0.50 µg/kg PCB 110 USEPA 8082A ECD 0.082 0.50 µg/kg PCB 114 USEPA 8082A ECD 0.068 0.50 µg/kg PCB 118 USEPA 8082A ECD 0.078 0.50 µg/kg PCB 119 USEPA 8082A ECD 0.072 0.50 µg/kg PCB 123 USEPA 8082A ECD 0.092 0.50 µg/kg PCB 126 USEPA 8082A ECD 0.072 0.50 µg/kg PCB 128 USEPA 8082A ECD 0.08 0.50 µg/kg PCB 138 USEPA 8082A ECD 0.075 0.50 µg/kg PCB 149 USEPA 8082A ECD 0.07 0.50 µg/kg PCB 151 USEPA 8082A ECD 0.069 0.50 µg/kg PCB 153 USEPA 8082A ECD 0.097 0.50 µg/kg PCB 156 USEPA 8082A ECD 0.073 0.50 µg/kg PCB 157 USEPA 8082A ECD 0.076 0.50 µg/kg PCB 158 USEPA 8082A ECD 0.07 0.50 µg/kg PCB 167 USEPA 8082A ECD 0.088 0.50 µg/kg PCB 168 USEPA 8082A ECD 0.069 0.50 µg/kg PCB 169 USEPA 8082A ECD 0.093 0.50 µg/kg PCB 170 USEPA 8082A ECD 0.066 0.50 µg/kg PCB 177 USEPA 8082A ECD 0.089 0.50 µg/kg PCB 180 USEPA 8082A ECD 0.083 0.50 µg/kg

A-2

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

GROUPINGS Attributes Analytical Method MDLs1 TRLs2 MDLt3 TRLt4 Units PCB 183 USEPA 8082A ECD 0.064 0.50 µg/kg PCB 187 USEPA 8082A ECD 0.087 0.50 µg/kg PCB 189 USEPA 8082A ECD 0.068 0.50 µg/kg PCB 194 USEPA 8082A ECD 0.082 0.50 µg/kg PCB 201 USEPA 8082A ECD 0.13 0.50 µg/kg PCB 206 USEPA 8082A ECD 0.078 0.50 µg/kg PCBs USEPA 8082A ECD µg/kg Pesticides 2,4'-DDD US EPA 8081A 0.2 2 µg/kg 2,4'-DDE US EPA 8081A 0.18 2 µg/kg 2,4'-DDT US EPA 8081A 0.14 2 µg/kg 4,4'-DDD US EPA 8081A 0.26 2 µg/kg 4,4'-DDE US EPA 8081A 0.3 2 µg/kg 4,4-DDT US EPA 8081A 0.33 2 µg/kg DDTs US EPA 8081A µg/kg Aldrin US EPA 8081A 0.31 2 µg/kg Alpha-BHC US EPA 8081A 0.29 2 µg/kg Beta-BHC US EPA 8081A 0.26 2 µg/kg Chlordane US EPA 8081A 1.9 10 µg/kg Delta-BHC US EPA 8081A 0.32 2 µg/kg Dieldrin US EPA 8081A 0.23 2 µg/kg Endosulfan I US EPA 8081A 0.36 2 µg/kg Endosulfan II US EPA 8081A 0.18 2 µg/kg Endosulfan Sulfate US EPA 8081A 0.26 2 µg/kg Endrin US EPA 8081A 0.2 2 µg/kg Endrin Aldehyde US EPA 8081A 0.2 2 µg/kg Endrin Ketone US EPA 8081A 0.3 2 µg/kg Gamma-BHC US EPA 8081A 0.23 2 µg/kg Heptachlor US EPA 8081A 0.22 2 µg/kg Heptachlor Epoxide US EPA 8081A 0.18 2 µg/kg Methoxychlor US EPA 8081A 0.17 2 µg/kg Toxaphene US EPA 8081A 8.5 40 µg/kg Bis(2-Ethylhexyl) Phthalates Phthalate EPA 8270C SIM 4.1 20 µg/kg Butylbenzyl Phthalate EPA 8270C SIM 4.4 20 µg/kg Diethyl Phthalate EPA 8270C SIM 5 20 µg/kg Dimethyl Phthalate EPA 8270C SIM 5.4 20 µg/kg Di-n-butyl Phthalate EPA 8270C SIM 5.1 20 µg/kg Di-n-octyl Phthalate EPA 8270C SIM 4.7 20 µg/kg Phenols 2-Methylphenol EPA 8270C SIM 5.3 20 µg/kg 2-Nitrophenol EPA 8270C SIM 2.4 20 µg/kg 3,4-Methylphenol EPA 8270C SIM µg/kg 4,6-Dinitro-2- Methylphenol EPA 8270C SIM µg/kg 4-Chloro-3- Methylphenol EPA 8270C SIM 3.5 20 µg/kg Bisphenol A EPA 8270C SIM ? ? µg/kg Total phenols EPA 8270C SIM 3.7 30 µg/kg Pyrethroids Allethrin (Bioallethrin) GC/MS/MS 0.09 1 µg/kg

A-3

Lower Santa Ana River Maintenance Dredging Project - Final Sampling and Analysis Plan

GROUPINGS Attributes Analytical Method MDLs1 TRLs2 MDLt3 TRLt4 Units Bifenthrin GC/MS/MS 0.085 1 µg/kg Cyfluthrin-beta (Baythroid) GC/MS/MS 0.1 1 µg/kg Cyhalothrin-Lamba GC/MS/MS 0.078 1 µg/kg Cypermethrin GC/MS/MS 0.15 1 µg/kg Deltamethrin (Decamethrin) GC/MS/MS 0.093 1 µg/kg Esfenvalerate GC/MS/MS 0.087 1 µg/kg Fenpropathrin (Danitol) GC/MS/MS 0.091 1 µg/kg Fenvalerate (sanmarton) GC/MS/MS 0.094 1 µg/kg Fluvalinate GC/MS/MS 0.12 1 µg/kg Permethrin (cis and trans) GC/MS/MS 0.088 1 µg/kg Resmethrin (Bioresmethrin) GC/MS/MS 0.079 1 µg/kg Resmethrin GC/MS/MS 0.013 1 µg/kg Sumithrin (Phenothrin) GC/MS/MS 0.09 1 µg/kg Tetramethrin GC/MS/MS 0.085 1 µg/kg Tralomethrin GC/MS/MS 0.1 1 µg/kg

A-4