final sediment characterization report combie reservoir sediment and mercury … · 2019-04-29 ·...

HOLDREGE & KULL, AN NV5 COMPANY 792 SEARLS AVENUE NEVADA CITY, CALIFORNIA 95959 PROJECT NO. 4688.01

FINAL SEDIMENT CHARACTERIZATION REPORT FOR

COMBIE RESERVOIR SEDIMENT AND MERCURY REMOVAL PROJECT MEADOW VISTA, CALIFORNIA

JANUARY 25, 2018

NEVADA IRRIGATION DISTRICT ENGINEERING DEPARTMENT 1036 WEST MAIN STREET GRASS VALLEY, CALIFORNIA 95945

PREPARED FOR:

792 Searls Avenue | Nevada City, CA 95959 | www.NV5.com | Office 530.478.1305 | Fax 530.478.1019 CONSTRUCTION QUALITY ASSURANCE - INFRASTRUCTURE - ENERGY - PROGRAM MANAGEMENT - ENVIRONMENTAL

Project No. 4688.01 January 25, 2018 Nevada Irrigation District 1036 West Main Street Grass Valley, CA 95945 Attention: Greg Jones, Assistant General Manager Reference: Combie Reservoir Sediment and Mercury Removal Project Meadow Vista, California

Subject: Final Sediment Characterization Report

Dear Mr. Jones:

On behalf of the Nevada Irrigation District (NID), Holdrege & Kull (H&K/NV5) prepared this report to summarize site investigation procedures and to present the results of sediment characterization associated with the Combie Reservoir Sediment and Mercury Removal Project in Meadow Vista, California.

This report provides information regarding chemical and physical properties of sediment in a 45-acre area to be dredged, which is located in the northeastern portion of the reservoir near the inlet of the Bear River. The site investigation was performed in general accordance with H&K’s proposal dated September 15, 2016, amended September 27, 2017.

H&K appreciates the opportunity to provide environmental engineering services for the Combie Reservoir Sediment and Mercury Removal Project. Please contact the undersigned with any questions or comments regarding H&K’s investigation.

Sincerely,

HOLDREGE & KULL, AN NV5 COMPANY

Bryan Botsford Jason W. Muir, C.E. 60167 Staff Geologist Principal Engineer

F:\1 Projects\4688 NID Combie Reservoir\4688.01 Sediment Characterization Report\02 Final Sediment Characterization Report, 2018 Amendment\01 Text\4688.01 Final Sediment Characterization Report, Combie Reservoir.docx

Project No. 4688.01 Final Sediment Characterization Report January 25, 2018 Combie Reservoir Sediment and Mercury Removal Project

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TABLE OF CONTENTS

TABLE OF CONTENTS .......................................................................................... iii ATTACHMENTS ...................................................................................................... v

ABBREVIATIONS AND ACRONYMS .................................................................... vi 1 INTRODUCTION ................................................................................................ 1

1.1 PURPOSE ................................................................................................. 1 1.2 SITE DESCRIPTION ................................................................................. 1 1.3 LIMITATIONS AND EXCEPTIONS ........................................................... 2

2 INVESTIGATION METHODOLOGY ................................................................... 3

2.1 SUBSURFACE INVESTIGATION ............................................................. 3 2.1.1 Direct Push Drilling ........................................................................ 3 2.1.2 Exploratory Trenching and Bulk Sampling ..................................... 5

2.2 SAMPLE HANDLING ................................................................................ 6 2.3 DECONTAMINATION ............................................................................... 6 2.4 HEALTH AND SAFETY ............................................................................. 6 2.5 SURVEYING ............................................................................................. 7 2.6 LABORATORY ANALYSIS ....................................................................... 8

2.6.1 Inorganics Analysis ........................................................................ 9 2.6.2 Organics Analysis ........................................................................ 10

2.6.3 Physical Properties .................................................................................. 10

3 DATA QUALITY OBJECTIVES ........................................................................ 11

3.1 BACKGROUND ....................................................................................... 11 3.2 REGULATORY FRAMEWORK ............................................................... 11

3.2.1 Water Quality ............................................................................... 12 3.2.2 Human Health ............................................................................. 14

3.3 RATIONALE FOR SAMPLING STRATEGY ............................................ 15 3.4 MEASUREMENT QUALITY OBJECTIVES ............................................. 15

3.4.1 Laboratory Measurement Quality Objectives ............................... 15 3.4.2 Field Measurement Quality Objectives ........................................ 16

3.5 DATA REVIEW AND VALIDATION ......................................................... 16 3.5.1 Precision ...................................................................................... 16 3.5.2 Accuracy ...................................................................................... 17 3.5.3 Representativeness ..................................................................... 18 3.5.4 Comparability .............................................................................. 18 3.5.5 Completeness ............................................................................. 18 3.5.6 Sensitivity .................................................................................... 19


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4 INVESTIGATION RESULTS ............................................................................ 20

4.1 SURFACE CONDITIONS ........................................................................ 20 4.2 SUBSURFACE CONDITIONS ................................................................. 20 4.3 SURFACE WATER AND GROUNDWATER CONDITIONS .................... 20 4.4 LABORATORY RESULTS ...................................................................... 21

4.4.1 Inorganics Analysis ...................................................................... 21 4.4.2 Organics Analysis ........................................................................ 21 4.4.3 Physical Properties ...................................................................... 22

4.5 SEDIMENT DEPTH AND CROSS SECTIONS ....................................... 22

5 FINDINGS AND CONCLUSIONS ..................................................................... 23

5.1 CHEMICAL CHARACTERIZATION ......................................................... 23 5.2 PARTICLE SIZE ANALYSIS ................................................................... 23

6 REFERENCES ................................................................................................. 24


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ATTACHMENTS

FIGURES Figure 1 Location Map Figure 2 Vicinity Map Figure 3 Boring and Trench Locations Figure 4 Cross Sections Figure 5 Cross Sections Figure 6 Cross Sections TABLES Table 1 Boring Locations, Elevations, and Depths Table 2 Total Metals in Sediment Samples Table 3 Methylmercury in Sediment Samples Table 4 Summary of Particle Size Analysis, Full Sediment Column Table 5 Summary of Particle Size Analysis, Shallow Sediment APPENDICES Appendix A Analytical Laboratory Reports and Chain-of-Custody Documentation Appendix B Lithologic Logs Appendix C Geotechnical Laboratory Reports


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ABBREVIATIONS AND ACRONYMS

APN assessor’s parcel number ATL Advanced Technology Laboratories, Inc. bgs below ground surface CAM California Assessment Manual CalEPA California Environmental Protection Agency Caltest Laboratory, Inc. CCR California Code of Regulations CDFW California Department of Fish and Wildlife CEQA California Environmental Quality Act CFGC California Fish and Game Code CFR Code of Federal Regulations COPC constituent of potential concern CrVI hexavalent chromium CTR California Toxics Rule CVAA cold-vapor atomic absorption CVAFS cold vapor atomic fluorescence spectrometry CWA Clean Water Act CWC California Water Code DI deionized water DQI data quality indicators DQO data quality objective DTSC California Department of Toxic Substances Control DTSC-SL DTSC Screening Level ELAP Environmental Laboratory Accreditation Program EPA United States Environmental Protection Agency GIS geographic information system GPS global positioning system HSC California Health and Safety Code H&K Holdrege & Kull HCl hydrochloric acid ICP-AES inductively coupled plasma atomic emission spectroscopy MDL method detection limit MeHg methylmercury mg/kg milligrams per kilogram MCL Maximum Contaminant Level MQO measurement quality objective MS matrix spike MSD matrix spike duplicate


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ABBREVIATIONS AND ACRONYMS (CONTINUED) MSL mean sea level mybp million years before present ng/L nanogram per liter Non 15 Non Chapter 15 Program NID Nevada Irrigation District PCEHD Placer County Environmental Health Division PVC polyvinyl chloride PQL practical quantitation limit OEHHA CalEPA Office of Environmental Health Hazard Assessment OSHA Occupational Safety and Health Administration QA quality assurance QC quality control RL laboratory reporting limit RPD relative percent difference RSL Regional Screening Level RWQCB California Regional Water Quality Control Board SM silty sand SL screening level SP poorly graded sand SSP Site Safety Plan STLC Soluble Threshold Limit Concentration SWRCB State Water Resources Control Board THg total recoverable mercury Title 22 Title 22 of the California Code of Regulations TTLC Total Threshold Limit Concentration TMDL Total Maximum Daily Load UCL upper confidence limit ug/kg microgram per kilogram USACE United States Army Corps of Engineers USDA United States Department of Agriculture USFWS United States Fish and Wildlife Service USCS Unified Soil Classification System USGS United States Geological Survey WDR Waste Discharge Requirement °C degrees Celsius %REC percent recovery


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1 INTRODUCTION

On behalf of the Nevada Irrigation District (NID), Holdrege & Kull (H&K) prepared this report to summarize site investigation procedures and to present the results of sediment characterization associated with the Combie Reservoir Sediment and Mercury Removal Project (the Project) in Meadow Vista, California.

The site investigation was performed in general accordance with H&K’s proposal dated September 15, 2016, amended September 27, 2017. Findings of the initial investigation performed in October 2016 were presented in a Draft Sediment Characterization Report for Combie Reservoir Sediment and Mercury Removal Project (H&K; January 20, 2017). This final report presents site investigation data from both October 2016 and October 2017.

1.1 PURPOSE

The purpose of H&K’s investigation was to: 1. Obtain discrete samples from various depths within the entire sediment column

using a direct-push drill rig, and perform analytical testing for total metals and methylmercury;

2. Obtain bulk samples from shallow sediment using an excavator and perform analytical testing for total and methylmercury.

3. Record the approximate sample locations and elevations to evaluate sediment depth and profile;

4. Record the sediment stratigraphy and prepare cross sections; and 5. Perform particle size analysis for composite sediment samples obtained from the

entire sediment column, and for bulk sediment samples obtained from shallow sediment.

The investigation was performed under NID’s existing water quality certification from the California Regional Water Quality Control Board (RWQCB; December 14, 2012) under Section 401 of the Clean Water Act (CWA), and an October 2016 amendment to the Project’s California Department of Fish and Wildlife (CDFW) Streambed Alteration Agreement under Section 1603 of the California Fish and Game Code (CFGC). No additional permitting was required by the Placer County Environmental Health Division (PCEHD; personal communication with West Borgault, September 9, 2016).

1.2 SITE DESCRIPTION

Combie Reservoir is located near Meadow Vista within the counties of Placer and Nevada. The reservoir was constructed in 1928 and provides approximately 5,500 acre‐feet of operational water storage at full capacity. The reservoir is a source of drinking and irrigation water for both counties and is used for surface water recreation.



The investigation area comprises approximately 45 acres in the northeastern portion of Combie Reservoir near the inlet of the Bear River. A location map, vicinity map, and site map are presented as Figures 1, 2, and 3, respectively.

The northern and central portions of the investigation area were accessed from Meadow Vista via Combie Road and Gravel Pit Road, then driving south on an unnamed levy road. The eastern portion of the investigation area was accessed from the Meadow Vista Rod and Gun Club, which is located on Combie Road. Access to the western portion of the investigation area was via a private boat ramp on Lakeview Place.

1.3 LIMITATIONS AND EXCEPTIONS

The information presented in this report is not meant to be comprehensive, to identify all potential concerns, or to eliminate the risk associated with environmental conditions. H&K used professional judgment and experience to arrive at the conclusions presented herein. Therefore, the conclusions are not to be considered scientific certainties. The recommendations provided herein are contingent upon H&K’s review of future sampling results and any other pertinent information that becomes available.

No environmental assessment can eliminate all uncertainty. H&K does not warrant the accuracy of information supplied by others, or the use of segregated portions of this plan. Furthermore, the concentrations detected in the samples collected during the site investigation may not be representative of conditions between the locations sampled. Other forms of contamination may be present within the site that the investigation did not detect. Professional judgment and interpretation are inherent in the process and uncertainty is inevitable. Therefore, the findings presented in this report may need to be revised based on the results of future sampling and analysis.

H&K prepared and issued this plan for the exclusive use of our client. Any reliance on this plan by a third party is at the party's sole risk. H&K is not responsible for any other party's interpretations of the reported information.

H&K performed this work in accordance with present, regional, generally accepted standards of care. This report does not represent a legal opinion. No warranty, expressed or implied, including any implied warranty of merchantability or fitness for the purpose is made or intended in connection with the work.

The findings of this report are valid as of the present date. However, changes in the conditions of the property can occur with the passage of time. The changes may be due to natural processes or to the works of man, on the project site or adjacent properties. Changes in regulations, interpretations, and/or enforcement policies may occur at any time.



2 INVESTIGATION METHODOLOGY

H&K performed subsurface investigation and laboratory analysis during low-water periods in October 2016 and October 2017. Investigation methodology is described below.

2.1 SUBSURFACE INVESTIGATION

2.1.1 Direct Push Drilling

In 2016, H&K contracted with National Exploration, a California-licensed driller (C-57 #953646), to advance 14 exploratory borings (C-1 through C-14) to depths up to 37 feet below the sediment surface using a Geoprobe 7730 low-ground-pressure, track-mounted, direct-push drill rig. In 2017, H&K contracted with Cascade Drilling (C-57 #932633) to advanced seven additional exploratory borings (C-15 through C-21) to depths up to 42 feet below the sediment surface using the same type of Geoprobe rig.

Boring locations are depicted on Figure 3. Typical surface conditions are depicted in the following photographs.

Subsurface investigation, location C-3, view to north, October 19, 2016.

The exploratory borings were advanced through soft sediment below the water level, and the bore holes typically collapsed as the core tubes were withdrawn. Therefore, the exploratory borings were not backfilled.




Soil samples were obtained for analytical testing from the 2016 borings (C-1 through C-14). Soil sample were obtained for analytical testing from the exploratory trenches located adjacent to the 2017 boring locations (C-15 through C-21). Soil sampling is described in the following paragraphs.

Subsurface investigation, location C-19, view to west, October 11, 2017.



Continuous soil sampling was performed using pre-cleaned, 1.5-inch inside diameter steel core barrels lined with new, pre-cleaned, single-use, clear polyvinyl chloride (PVC) sample liners.

Sediment samples were collected as grab samples (independent, discrete samples) from selected 12-inch depth intervals. The 12-inch sample intervals were cut from the PVC sample sleeve using a pre-cleaned knife, labeled and capped with new Teflon™ tape and plastic end caps.

In general, one discrete sample was obtained mid-depth from the sediment column, and one discrete sample was obtained from near the base of the sediment column. Composite samples were prepared from the entire sediment column at selected exploratory boring locations for particle size determination.

2.1.2 Exploratory Trenching and Bulk Sampling

H&K performed bulk sampling from the upper 5-6.5 feet of sediment at locations C-15 through C-19 in October 2017 using a Takeuchi TB 230 excavator. Approximately 300 pounds of sediment were collected from each exploratory trench location and placed in pre-cleaned, 5-gallon plastic buckets with sealing plastic lids. The samples were transported to H&K’s Nevada City laboratory under chain-of-custody documentation for sub-sampling.

Bulk sampling, location C-15, view to north, October 13, 2017.



Sub-sampling of the bulk samples was performed using a stainless steel sludge sampler lined with new, pre-cleaned, single-use, 2-inch diameter acetate sleeves and catchers. One 2-inch diameter core of sediment was obtained from the full depth of each 5-gallon bucket of bulk sample from each location, and was placed into a pre-cleaned, stainless steel bowl. The samples were homogenized using a pre-cleaned, stainless steel scoop, transferred to laboratory-supplied glass jars, and placed on ice. All equipment used during the sub-sampling process was decontaminated between bulk sample locations using the procedures outlined in Section 2.3.

2.2 SAMPLE HANDLING

Sample handling and shipment was performed under chain-of-custody documentation. Samples to be analyzed for metals were placed in a thermally-insulated container on wet ice and were transported to Advanced Technology Laboratories (ATL).

Methylmercury (MeHg) sampling was performed using the clean hands procedure, pursuant to EPA method 1669. Samples to be analyzed for MeHg were placed in a thermally-insulated container on dry ice, and were transferred to a freezer at the H&K office until shipment in a thermally-insulated container on dry ice to Caltest Analytical Laboratory (Caltest).

2.3 DECONTAMINATION

For sample locations subject to metals and organics analysis, sample liners were decontaminated as follows, pursuant to methodology set forth by the United States Geological Survey (USGS; personal communication with Charlie Alpers, October 11, 2016). New PVC sample liners were:

1. Rinsed with de-ionized (DI) water, using a dilute laboratory-grade liquid soap (Liquinox™);

2. Rinsed with 5 percent (%) hydrochloric acid (HCl) solution; and 3. Triple-rinsed with DI water.

The steel core barrels were decontaminated before first use and between boring locations by pressure washing.

2.4 HEALTH AND SAFETY

All personnel working on the project site (H&K; National Exploration and Cascade) were certified under Occupational Safety and Health Administration (OSHA) Hazardous Waste Operations and Emergency Response Standard (29 Code of Federal Regulations [CFR] 1910). H&K prepared a Site Safety Plan for Sediment Characterization, Combie Reservoir Sediment and Mercury Removal Project (October 2016, updated October 2017), which was reviewed at the start of each work day during the tailgate safety meeting,



and was maintained at the site during the investigation. No visible dust was generated during the investigation due to the high ambient soil moisture content. The investigation resulted in no safety incidents.

2.5 SURVEYING

H&K recorded the approximate location of each boring using resource-grade global positioning system (GPS) equipment. Local elevations were measured using a CST/berger optical level to an accuracy of 0.1 foot. Absolute elevations (feet above mean sea level [MSL]) were estimated based on a local benchmark (1610.2 feet above MSL) set by NID near the eastern end of the investigation area, and a local benchmark (1605.7 feet above MSL) set by NID near the northwestern end of the investigation area.

Locations, elevations, and depths of the exploratory borings are listed in Table 1. Coordinates are presented in decimal degree based on the WGS84 datum. The locations and elevations are approximate and were not determined with survey-grade accuracy. The water surface elevation was 1596.5 feet above MSL on commencement of the investigation (October 19, 2016) and continued to rise during the investigation. The water surface elevation was not measured during the 2017 investigation, but was significantly lower than the 2016 investigation. Typical conditions are depicted in the following photographs.






2.6 LABORATORY ANALYSIS

The laboratory testing program included analysis of sediment samples for inorganics, organics, and physical properties.



2.6.1 Inorganics Analysis

Inorganics analysis included:

Total CAM 17 (Title 22) metals by inductively coupled plasma atomic emission spectroscopy (ICP-AES; United States Environmental Protection Agency [EPA] Method 6010B/7471A);

Total mercury (THg) by cold-vapor atomic absorption (CVAA, EPA Method 7471A);

Total aluminum and gold by EPA Method 6010B; and

Total hexavalent chromium (CrVI) by alkaline digestion and ion chromatography (EPA Methods 3060A/7199).

Inorganics analysis was performed by Advanced Technology Laboratories (ATL) of Signal Hill, California (ELAP certification No. 1838).

For locations C-1 through C-14, two samples per boring (one from mid-depth and one from the bottom of the sediment column) for a total of 28 samples were analyzed for total mercury (EPA 7471A) and total gold (EPA 6010B). Ten of the 28 sediment samples were analyzed for the heavy metals listed in the California Regional Water Quality Control Board (RWQCB) General Order for Maintenance Dredging (R5-2009-0085, General Order), including total CAM 17 (Title 22) metals (which includes total mercury), total aluminum and hexavalent chromium. These samples were also analyzed for percent moisture for dry-weight conversion by ASTM Method D2216.

For locations C-15 through C-19, bulk samples obtained from the upper 5 to 6.5 feet were analyzed for total mercury (EPA Method 7471A). These samples were also analyzed for percent moisture by ASTM Method D2216.

Table 2.6.1.1 – Laboratory Testing Program, Inorganics

Analysis Method Quantity Total CAM 17 (Title 22) Metals EPA 6010B/7471A 10 Total Aluminum EPA 6010B 10 Total Hexavalent Chromium EPA 3060A/7199A 10 Total Mercury (including CAM 17) EPA 7471A 33 Total Gold EPA 6010B 28

Moisture Content ASTM D2216 33

Notes: ASTM = American Society for Testing of Materials EPA = United States Environmental Protection Agency



2.6.2 Organics Analysis

Organics analysis consisted of methylmercury (MeHg) by cold vapor atomic fluorescence spectrometry (CVAFS; EPA Method 1630) and was performed by Caltest Analytical Laboratory (Caltest) of Napa, California (ELAP certification No. 1664). MeHg sampling was performed using the clean hands procedure, pursuant to EPA method 1669. The laboratory reporting limit (RL) is 0.1 micrograms per kilogram (ug/kg), and the method detection limit (MDL) is 0.05 ug/kg. The frequency of MeHg analysis is summarized below.

Table 2.6.2.1 – Laboratory Testing Program, Organics

Analysis Method Quantity Methylmercury EPA 1630 15

Notes: ASTM = American Society for Testing of Materials EPA = United States Environmental Protection Agency

2.6.3 Physical Properties

Testing for physical properties included particle size analysis and moisture content. Particle size analysis was performed for sand-size particles (i.e., all particle sizes retained on the No. 200 sieve) using ASTM Method D422A. Moisture content was determined using ASTM Method D2216. The frequency of testing for physical properties is summarized below.

Table 2.6.3.1 – Laboratory Testing Program, Physical Properties

Analysis Method Quantity Particle Size Analysis, Full Sieve ASTM D422A 19 Moisture Content ASTM D2216 33

Notes: ASTM = American Society for Testing of Materials



3 DATA QUALITY OBJECTIVES

3.1 BACKGROUND

Historical gold mining operations in the Sierra Nevada have contributed to ambient mercury concentrations in river and lake sediment. Elemental (liquid) mercury was imported to the region during the historical gold mining era (i.e., 1849 to circa 1950) to facilitate the extraction of gold from ore materials, and much of the elemental mercury was released to the environment.

The deposition of sediment in water storage reservoirs, particularly during winter storm events, requires that routine maintenance dredging be performed to maintain water storage capacity. However, maintenance dredging operations at Combie Reservoir were halted in 2003 based on total recoverable mercury concentrations detected in dredge effluent.

Since the middle of the 1960s, NID has contracted with local aggregate mining companies to perform seasonal maintenance dredging of the northeastern portion of the reservoir near the Bear River inlet. From the early 1970s until 2003, dredging was performed upstream of the present investigation area (see Figure 1) within a large working pond. The pond measures approximately 0.7 miles long and 0.1 mile wide, and includes a series of levies and berms to isolate the working pond from the river and reservoir. Marketable materials were harvested from the working pond for use as construction aggregate and fill material.

Because Combie Reservoir is relatively long (2 miles) and narrow (typically less than ¼ mile), sediments that are deposited in the reservoir tend to be sorted by particle size along the length of the reservoir. Larger particle sizes tend to settle more rapidly and thus are accumulated within the upstream (northeastern) portion of the reservoir, including the working pond and the present investigation area, which is located immediately downstream from the working pond. Smaller particle sizes (i.e., silt and clay) tend to be carried further downstream prior to deposition in the southwestern portion of the reservoir.

3.2 REGULATORY FRAMEWORK

The California EPA (CalEPA), including the State Water Resources Control Board (SWRCB) and the Department of Toxic Substances Control (DTSC), is responsible for protection of public health and the environment. The SWRCB and its nine Regional Water Quality Control Boards (RWQCBs) have the responsibility for the coordination and control of water quality, including the protection of the beneficial uses of the waters of the State. The site is located within the SWRCB’s Central Valley Region. DTSC has the responsibility of managing the State’s hazardous waste program to protect public health and the environment.



3.2.1 Water Quality

The regulatory framework governing protection of water quality in California is described in the Policy for Implementation of Toxic Standards for Inland Surface Waters, Enclosed Bays and Estuaries of California, which is also known as the State Implementation Policy (SWRCB, 2005). Pursuant to the State Implementation Policy, the following water quality objectives and criteria are potentially applicable based on state and federal regulation.

Federal Water Quality Criteria

Federal water quality criteria are set forth in the National Toxics Rule (NTR; EPA 1995) and in the California Toxics Rule (CTR; EPA 2000), which is promulgated by the EPA in 40 CFR 131.38. Total recoverable mercury (THg) concentrations detected during routine sampling of unfiltered dredge effluent at Combie Reservoir in 2003 exceeded 0.050 micrograms per liter (ug/L), which is the CTR criterion for protection of human health based on consumption of fish and drinking water. Although this criterion applies to total recoverable mercury, it is based primarily on consumption of organic mercury (methylmercury, MeHg) in fish tissue.

Basin Plan Objectives

Water quality objectives are identified in the Water Quality Control Plan (Basin Plan) for the Sacramento River Basin and the San Joaquin River Basin (RWQCB; 2016). The Basin Plan identifies the following existing and potential beneficial uses for the Bear River:

Municipal and domestic supply; Agricultural water supply; Hydropower generation; Water contact and non-contact recreation; Warm and cold freshwater habitat; Spawning, reproduction and/or early development of fish; and Wildlife habitat.

Water quality objectives corresponding to these beneficial uses include Maximum Contaminant Levels (MCLs) for drinking water specified in Title 22 of the California Code of Regulations (22 CCR), CTR values for protection of human health and aquatic life, and agricultural water quality objectives. The Basin Plan defines water quality objectives for metals as dissolved concentrations except for selenium, molybdenum and boron, which are defined as total concentrations.



Ambient Water Quality Criteria

EPA ambient water quality recommended criteria and other criteria are commonly used by the RWQCB to interpret narrative objectives in the Basin Plan, such as Office of Environmental Health Hazard Assessment (OEHHA) fish consumption benchmarks, federal and state antidegradation requirements, and waterway-specific benchmarks.

When federal standards appear to be over-protective or under-protective of the designated uses for a specific water body, the RWQCB may develop site-specific water quality criteria. The Clean Water Act (CWA) 303(d) list of impaired water bodies contains such site-specific water quality criteria. As listed in the Final 2012 California Integrated Report (SWRCB, 2016; accessed online at http://www.waterboards.ca.gov/water_issues /programs/tmdl/integrated2012.shtml), a ten-mile segment of the Bear River located below Combie Reservoir and extending to Camp Far West Reservoir is listed by the SWRCB as impaired for mercury. A TMDL for mercury associated with this segment of the Bear River is under development. The RWQCB has previously used EPA MeHg water quality criteria (and the OEHHA screening level) of 0.3 mg/kg in fish tissue as a benchmark value to determine whether a surface water body should be listed (SWRCB, 2016).

As an example of site-specific benchmark values for another water body, a MeHg limit of 0.14 nanograms per liter (ng/L) was established for the water in Cache Creek based on potential fish consumption by humans. MeHg limits in trophic level 3 and 4 fish of 0.12 mg/kg and 0.23 mg/kg wet weight, respectively, were established for Cache Creek, and a reduction of total mercury discharge by 95% is required for individual upstream abandoned mercury mine sites (RWQCB; 2005).

Waste Discharge Requirements

The project manager performed an antidegradation analysis in 2012 on behalf of The Sierra Fund to support an application by NID for Waste Discharge Requirements. RWQCB subsequently issued a Water Quality Certification (401 Certification; December 14, 2012), which pertains to the United States Army Corps of Engineers (USACE) Nationwide Permit No. 16 under Section 401 of the CWA, and serves as a Waste Discharge Requirement (WDR) under the Porter-Cologne Water Quality Control Act.

The 401 Certification sets forth technical requirements related to the Project, including effluent limitations and requirements for surface water monitoring and reporting when performing in-water work or other work that results discharge to surface water.

As stated in the 401 Certification, the Project is also regulated under Order No. 2003-0017 DWQ, Statewide General Waste Discharge Requirements for Dredged or Fill Discharges that have Received State Water Quality Certification (SWRCB, 2003; also referred to as the General WDRs), which contains general requirements for compliance with the site-specific 401 Certification.



Waste Disposal to Land

The California Water Code (CWC), Division 7, Chapter 4, Article 4, Sections 13260 through 13274, pertains to WDRs issued by the RWQCB. State regulations pertaining to the treatment, storage, processing, or disposal of solid waste are found in California Code of Regulations (CCR) Title 27, beginning with Section 20005. Pursuant to Title 27 Section 20090, certain activities are exempt from Title 27. For example, discharges of wastewater to land, including evaporation ponds and percolation ponds, are exempt provided that:

The CRWQCB has issued or waived WDRs;

The discharge complies with the applicable water quality control plan; and

The wastewater does not need to be managed as a hazardous waste.

The RWQCB Non Chapter 15 (Non 15) Program regulates point discharges that are exempt from Title 27 pursuant to Subsection 20090 and are not subject to the Federal Water Pollution Control Act. The Non 15 Program also regulates the discharge of wastes classified as inert pursuant to Section 20230 of Title 27. Section 20230 defines inert waste as solid waste that:

Does not contain hazardous waste or soluble pollutants at concentrations in excess of applicable water quality objectives; and

Does not contain significant quantities of decomposable waste.

Inert wastes do not need to be discharged at classified waste disposal units, and the RWQCB can prescribe individual or general WDRs for discharges of inert wastes.

3.2.2 Human Health

Screening levels related to protection of human health in the case of routine, long term exposure by direct pathways (i.e., ingestion, inhalation and dermal contact) commonly include EPA Regional Screening Levels (RSLs) and DTSC Screening Levels (DTSC-SLs). For inorganics, background concentrations are also used as a basis for comparison.

RSLs and DTSC-SLs include inorganic constituent concentrations that are based on the protection of public health. In California, DTSC-SLs are commonly used in lieu of RSLs when DTSC uses toxicity criteria that are different than the toxicity criteria used by EPA.

The RSLs and DTSC-SLs are considered conservative. Under most circumstances, the presence of a chemical in media at concentrations less than the corresponding RSL or DTSC-SL can be assumed not to pose a significant, long-term (chronic) threat to human health. The presence of a chemical or inorganic constituent at a concentration in excess of a screening level does not necessarily indicate that adverse impacts to human health are occurring or will occur; however, further evaluation of potential human health concerns are generally appropriate if screening values are exceeded.



3.3 RATIONALE FOR SAMPLING STRATEGY

The purpose of H&K’s investigation was to characterize sediment within the study area with respect to total metals and MeHg concentrations; to evaluate sediment depth and profile; to record the sediment stratigraphy; and perform particle size analysis for composite sediment samples.

During the October 2016 investigation, two samples (one from the bottom of the sediment column and one from mid-depth) from boring locations C-1 through C-14 were analyzed for total mercury (EPA 7471A) for a total of 28 samples. Ten of these samples were also analyzed for MeHg (EPA 1630) and the heavy metals listed in the General Order for Maintenance Dredging (R5-2009-0085). During the October 2017 investigation, bulk samples obtained from the upper 5 to 6.5 feet of sediment were analyzed for total mercury (EPA 7471A), MeHg (EPA 1630) and percent moisture.

Order R5-2009-0085 typically requires that one composite sample be prepared for each 10,000 cubic yards of material to be dredged, although the actual sampling frequency is subject to change by the reviewing agency. According to the 401 Certification (RWQCB; December 14, 2012), the area to be dredged (Figures 1 and 2) comprises approximately 45 acres and contains approximately 135,000 tons of sediment. Based on this estimate from the 401 Certification, and assuming a sediment density of roughly one ton per cubic yard, 14 composite samples would be required for a frequency of one sample per 10,000 cubic yards. The number of composite samples analyzed (10 for Title 22 Metals, 33 for total mercury, and 15 for MeHg) is similar to this general guideline, and laboratory results are generally consistent between sample locations.

3.4 MEASUREMENT QUALITY OBJECTIVES

Measurement Quality Objectives (MQOs) are established for field and laboratory measurements to define criteria for calibration and quality control. MQOs are used to assess the viability and usability of data, considering the following Data Quality Indicators (DQIs): precision, accuracy, representativeness, completeness, comparability, and sensitivity.

3.4.1 Laboratory Measurement Quality Objectives

Analysis was performed by the following laboratories:

Sediment samples were submitted to ATL for analysis of total metals concentrations. Sediment samples were submitted to Caltest for analysis of MeHg concentrations.

H&K agreed to the MQOs defined by the contract laboratories. Quality control (QC) reports are included in the laboratory reports presented in Appendix A.



3.4.2 Field Measurement Quality Objectives

No re-usable sampling equipment was employed; therefore, no equipment rinsate blanks were prepared. Field duplicate samples were collected and archived.

3.5 DATA REVIEW AND VALIDATION

Field personnel were responsible for following H&K’s sampling and documentation procedures to facilitate the collection of defensible and justifiable data. Responsibilities for data review and validation are outlined below:

Field data review and validation was performed by Bryan Botsford, a qualified environmental professional, and was overseen by Jason Muir, the project manager.

Laboratory data review and validation was performed by a chemist or laboratory analyst as described in the laboratory quality assurance programs, as summarized in the laboratory reports (Appendix A). Data failing to meet the laboratory acceptance criteria were flagged with a qualifier identifying the associated problem in the laboratory report.

Secondary validation for field data and review of laboratory quality control reports was performed by the project manager.

The project manager is responsible for overall verification and final approval of all data.

Procedures and criteria for review of laboratory data are summarized below.

3.5.1 Precision

H&K assessed the precision of laboratory analysis by comparing the analytical results with matrix spike/matrix spike duplicate (MS/MSD) results for organic analysis, and laboratory duplicate results for inorganic analysis. For laboratory precision, H&K’s general MQOs are:

RPD between duplicate blank spikes less than or equal to 20%. RPD between laboratory duplicate samples less than or equal to 30% for analyte

concentrations greater than or equal to five times the MDL, and the absolute concentration difference less than or equal to the MDL for analyte concentrations less than five times the MDL.

RPD between MSDs less than or equal to 40%.

ATL and Caltest reported no duplicate recoveries outside of the acceptance criteria.



3.5.2 Accuracy

H&K assessed the accuracy of laboratory results by reviewing method blank, reagent and preparation blank, MS/MSD, field blank, and bottle blank analytical results. The percent recovery (%REC or %R as shown in the following equation) of MS samples was calculated using the following equation:

%𝑅𝑅𝑖𝑖 = �𝑌𝑌𝑖𝑖𝑋𝑋𝑖𝑖� × 100

where: %Ri = percent recovery for compound i Yi = measured analyte concentration in sample i (measured - original sample

concentration) Xi = known analyte concentration in sample i

For matrix spikes, the %REC calculation typically takes into account correcting the matrix spike concentration for the naturally occurring amounts (as measured in the unspiked sample). The calculation may be represented by the following equation:

%𝑅𝑅 =(𝐴𝐴 − 𝐵𝐵)

𝐾𝐾× 100

where: %R = percent recovery A = measured value or concentration in the matrix spike B = measured value or concentration in the unspiked sample K = known or accepted/true value or concentration in the matrix spike without native amounts present

For laboratory accuracy, the MQOs are:

Detections less than the RL for field blanks. Detections less than ½ the RL for laboratory blanks. %REC between 80 and 120%.

Laboratory quality control flags are summarized below. These flags did not signify a negative impact on data usability.

ATL Work Order 1603809

Matrix spike and matrix spike duplicate B6K0189-MSD1 for aluminum was outside the ATL acceptance criteria (RPD ≤ 20%). The analytical batch was validated by the laboratory control sample.

The post spike recoveries (B6K0131-PS1 and B6K0132-PS1) for THg were above the ATL acceptance limit (85-115%). Laboratory duplicate results were acceptable.



Matrix spike recovery for CrVI was outside of the QC limit due to matrix interference.Laboratory duplicate results were acceptable.

ATL Work Order 1703784

ATL reported no QC flags for total metals or percent moisture analysis.

Caltest Work Orders R101304 and S100823

Caltest reported no QC flags for MeHg analysis.

3.5.3 Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represent the characteristics of a population, variations in parameters at a sampling point, or an environmental condition that they are intended to represent. H&K and the contract laboratories addressed the representativeness of data by consistent application of established field and laboratory procedures.

Sample holding times were verified and chain-of-custody forms were checked for completeness. Temperature of samples was measured upon receipt by the laboratory, when applicable. Laboratory blank samples were evaluated for the presence of contaminants. No significant discrepancies were identified.

3.5.4 Comparability

The comparability objective determines whether analytical conditions are sufficiently uniform for each analytical run to ensure that all reported data will be consistent. Comparability is addressed by using similar analytical methods from one investigation to the next.

3.5.5 Completeness

Completeness is a measure of the amount of valid data obtained from a measurement system compared to the amount expected to be obtained under normal conditions. The completeness objective for field and laboratory data is 90%. Field measurements are expected to provide 90% or more data that meet the QC acceptance criteria and the laboratories are expected to provide 95% or more data that meet the QC acceptance criteria. If 95% of the laboratory data meet these criteria, then the data sets are considered complete. The percent completeness is calculated using the following equation:

%𝐶𝐶 =𝐴𝐴𝐼𝐼

× 100

where: %C = Percent completeness (analytical) A = Actual number of samples collected/valid analyses obtained I = Intended number of samples/analyses requested



Considering the acceptance criteria identified in the preceding sections, RPD values exceeded the project QA limits for 10 sample/constituent parings (aluminum). These non-conformances represent 4% of the total 248 sample/constituent parings for the investigation. Based on this result, H&K’s opinion is that the investigation DQOs are not significantly compromised.

3.5.6 Sensitivity

The laboratory method detection limit (MDL) is the minimum concentration of an analyte that can be reliably distinguished from background noise for a specific analytical method. The reporting limit (RL), or practical quantitation limit (PQL), represents the lowest concentration of an analyte that can be accurately and reproducibly quantified in a sample matrix. The screening levels described in Section 3.2.2 are typically several times the MDL to allow for reproducibility. H&K verified the sensitivity of laboratory analysis by comparing the RLs reported by the laboratory to the associated screening levels.



4 INVESTIGATION RESULTS

4.1 SURFACE CONDITIONS

During the low-water period (typically in late October), the lake bottom within the 45-acre area to be dredged consists of sediment that is predominantly comprised of silt and fine sand. Slope gradients at the sediment surface are typically less than 5 percent and are steeper at channelized inlet locations. Sediment surface elevations range from approximately 1590 to 1600 feet above MSL.

4.2 SUBSURFACE CONDITIONS

The soil conditions described in the following paragraphs are generalized based on H&K’s observation of sediment and soil conditions revealed during the subsurface investigation. Lithologic logs are presented in Appendix B. The boring locations are depicted on Figure 3.

Near-surface sediment is generally described as strong brown (Munsel color 7.5YR 4/6) to dark yellowish brown (10YR 4/6), soft, saturated, low-plasticity silt and fine sand (United States Soil Classification System [USCS] symbol ML and SM) to depths of 3 to 14 feet.

The near-surface sediment was underlain by interbedded layers of sand and silt, generally described as grey (GLEY1 5/5 and 7.5YR 5/1), soft, saturated, low-plasticity silt (ML) and loose, saturated, silty sand (SM) and poorly graded sand (SP).

Native soil was encountered at depths ranging from 5 to 35 feet below the sediment surface. The native soil was generally described as dark yellowish brown (10YR 3/4) silty clay (CL) and clayey silt (ML) with gravel. Rock structure generally increased with depth in the native material. According to Saucedo and Wagner (1992), the site is underlain by Paleozoic and Mesozoic-aged massive diabase and metavolcanic rocks associated with the Lake Combie complex.

4.3 SURFACE WATER AND GROUNDWATER CONDITIONS

The site is located near the Bear River inlet to Combie Reservoir. At the time of the investigation, during the low-water period, the river flowed in three broad courses through the site. During the October 2016 investigation, the water level of the reservoir was measured at 1596.5 feet above MSL, and continued to rise during the investigation. The water level during the October 2017 investigation was not measured, but was significantly lower than the October 2016 investigation. Saturated sediment was observed in the exploratory borings to depths of 37 feet bgs. Groundwater is expected to occur in fractured bedrock underlying the site.



4.4 LABORATORY RESULTS

4.4.1 Inorganics Analysis

Results of total metals analysis are presented in Table 2. Laboratory reports and chain-of-custody documentation are presented in Appendix A.

Total metals concentrations detected in the sediment samples are compared to the screening levels described in Section 3.2.2. The total metals concentrations are below the corresponding DTSC-SLs and RSLs for commercial and residential soil, with the exception of arsenic.

The detected total arsenic concentrations range from less than the laboratory reporting limit of 0.7 milligrams per kilogram (mg/kg) to 9.1 mg/kg. These concentrations are within the range of background soil arsenic concentrations for the region, as determined by H&K’s statistical analysis of over 200 data points obtained by H&K from sites in western Nevada County area as part of DTSC’s Voluntary Cleanup Program. Additional information regarding regional background concentrations can be provided upon request.

The total metals concentrations detected in the sediment samples are below the corresponding Total Threshold Limit Concentration (TTLC) values for designation of hazardous waste in California. Although no extraction testing was performed during the present investigation, sediment associated with past dredging operations at Combie Reservoir has previously been classified by the RWQCB as Group C (inert) waste pursuant to Title 27 (Order WQ 89-4; SWRCB, 1989).

4.4.2 Organics Analysis

Results of methylmercury (MeHg) analysis are presented in Table 3. Laboratory reports and chain-of-custody documentation are presented in Appendix A.

MeHg concentrations detected in sediment samples obtained from mid-depth and the bottom of the borings during the October 2016 investigation ranged from less than 0.05 micrograms per kilogram (ug/kg) to 0.45 ug/kg, on a wet-weight basis. Converting to dry weight, the concentrations are estimated to range from less than 0.05 ug/kg to 0.55 ug/kg.

MeHg concentrations detected in shallow sediment samples (sediment surface to 6.5 feet below the sediment surface) during the October 2017 investigation ranged from 0.16 to 0.36 ug/kg, on a wet-weight basis. Converting to dry weight, the concentrations are estimated to range from 0.20 ug/kg to 0.49 ug/kg.

The MeHg concentrations detected in sediment samples are below the corresponding screening levels (RSLs) for commercial soil (120 mg/kg) and residential soil (7.8 mg/kg). A milligram per kilogram (mg/kg) is equal to 1,000 micrograms per kilogram (ug/kg).



4.4.3 Physical Properties

Particle size analysis (ASTM D422A) for composite sediment samples obtained from the entire sediment column during the October 2016 investigation is summarized in Table 4. Particle size analysis for composite sediment samples obtained within 6.5 feet of the sediment surface during the October 2017 investigation is summarized in Table 5. Moisture contents are listed in Table 3. Laboratory reports are presented in Appendix C.

Full Sediment Column

The results listed in Table 4 are based on laboratory testing of composite samples from boring locations C-1 through C-14. These composite samples were prepared by combining the entire 1.5-inch diameter sediment column obtained by direct push methods at each location, or to the maximum depth explored at locations where native soil was not encountered.

As listed in Table 4, the average gravel content (average percent retained on a No. 4 sieve) for the fourteen locations was 0.5%, ranging from 0 to 2%. The average sand content (average percent passing the No. 4 sieve and retained on the No. 200 sieve) was 64.1%, ranging from 41 to 91%. The average fines (silt and clay) content (average percent passing the No. 200 sieve) was 35.4%, ranging from 9 to 59%. In general, the composite soil samples were described as silty sand (SM) and sandy silt (ML), dark grayish brown (Munsel color 10 YR 4/2).

Shallow Sediment

The results listed in Table 5 are based on laboratory testing of bulk samples obtained from shallow exploratory trenches at locations C-15 through C-19. The samples were obtained from the upper five feet of sediment (upper 6.5 feet at location C-16). Sampling and sub-sampling methodology is described in Section 2.1.2.

No gravel was encountered in the shallow sediment. As listed in Table 5, the average sand content was 30.7%, and ranged from 12 to 52%. The average fines (silt and clay) content was 69.3%, and ranged from 48 to 88%. In general, the composite soil samples were described as silt (ML) and silty sand (SM), brown (Munsel color 10YR 4/4).

4.5 SEDIMENT DEPTH AND CROSS SECTIONS

Sediment depth at the exploratory boring locations ranges from 5 to 35 feet. Sediment depth was not determined at five locations (C-9, C-13, C-14, C-17, and C-19), as these borings did not extend to underlying native soil. Cross sections were developed by interpolation between the boring locations and are presented as Figures 4 through 6.



5 FINDINGS AND CONCLUSIONS

H&K’s opinion is that the investigation was performed in general accordance with our proposal dated September 15, 2016, and amended September 27, 2017. Findings and conclusions regarding chemical characterization, particle size analysis and sediment depth are presented below.

5.1 CHEMICAL CHARACTERIZATION

Total metals concentrations detected in the sediment samples obtained from the site did not exceed their respective screening levels, with the exception of arsenic. Total arsenic concentrations were detected within the commonly accepted range of regional background soil arsenic concentrations.

5.2 PARTICLE SIZE ANALYSIS

Composite sediment samples were generally described as silty sand (SM), sandy silt (ML) and silt (ML). Gradations are summarized in Tables 4 and 5, and laboratory reports are presented in Appendix C.

Little gravel (less than 2%) was recovered in the sediment samples; however, gravel recovery may have been restricted by the small-diameter (1.5-inch) direct-push sampling techniques. No significant gravel was encountered in the shallow exploratory trenches.

Sand content (passing the No. 4 sieve and retained on the No. 200 sieve) for full-depth exploratory borings ranged from 41 to 91%, and averaged 64%. For the exploratory trenches (upper 6.5 feet), sand content was generally lower, ranging from 12 to 52% and averaging 31%.

Fines (silt and clay) content (passing the No. 200 sieve) was up to 59% for full-depth samples and up to 88% for the upper 6.5 feet.

In general, the shallow sediment samples had higher percentages of fines (silt and clay). Although the fines content is expected to generally increase with the distance down-gradient from the inlets (i.e., to the southwest), that trend was not apparent in the relatively small study area due to heterogeneous flow conditions.

Lower percentages of fines were typically encountered at locations near inlets and channels (e.g., exploratory boring locations C-10, C-12 and C-13), where water velocities are expected to be higher. Higher percentages of fines were encountered in apparent backwater areas (e.g., C-1, C-2, C-3 and C-5).



6 REFERENCES

California Department of Toxic Substances Control (DTSC), 2016. Human Health Risk Assessment Note No. 3. Office of Human and Ecological Risk. DTSC recommended methodology for use of U.S. EPA Regional Screening Levels (RSLs) in the Human Health Risk Assessment process at hazardous waste sites and permitted facilities. January. Available online at https:// www.dtsc.ca.gov/assessingrisk/humanrisk2.cfm

California Regional Water Quality Control Board (RWQCB), 2009. General Order for Maintenance Dredging (R5-2009-0085)

RWQCB, 2012. Water Quality Certification (401 Certification). December 14

RWQCB, 2016. The Water Quality Control Plan (Basin Plan) for the Sacramento River Basin and the San Joaquin River Basin. Central Valley Region. Fourth edition. October. Accessed online at http://www.waterboards.ca.gov/ centralvalley/water_issues/ basin_plans/

California State Water Resources Control Board (SWRCB), 1968. Resolution No. 68-16 (Antidegradation Policy). California Environmental Protection Agency, State Water Resources Control Board. October 28

SWRCB, 1989. Order WQ 89-4, In the matter of the petition of Lake Combie Association, Inc. for review of Order No. 88-025 of the California Regional Water Quality Control Board, Central Valley Region

SWRCB, 2003. Order No. 2003-0017 DWQ, Statewide General Waste Discharge Requirements for Dredged or Fill Discharges that have Received State Water Quality Certification (General WDRs)

SWRCB, 2005. Policy for Implementation of Toxics Standards for Inland Surface Waters, Enclosed Bays, and Estuaries of California. California Environmental Protection Agency, State Water Resources Control Board

SWRCB, 2016. 2010 Final 2012 California Integrated Report (Clean Water Act Section 303(d) List / 305(b) Report) - Statewide. California Environmental Protection Agency, State Water Resources Control Board. Available online http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2012.shtml)

Saucedo, G.J., and Wagner, D.L., et al. 1981. Geologic Map of the Chico Quadrangle, California: California Department of Conservation, Division of Mines and Geology, Regional Map Series, Map No. 1A

United States Environmental Protection Agency (USEPA), 2000. California Toxics Rule. United States Environmental Protection Agency, Region 9. Available online at http://www.epa.gov/region9/water/ctr/



USEPA, 2005a. Tier 2 Antidegradation Reviews and Significance Thresholds. United States Environmental Protection Agency, Office of Science and Technology. Accessed online at http://water.epa.gov/scitech/swguidance/ standards/adeg/upload/tier2.pdf

USEPA, 2012. Sampling and Analysis Plan Guidance and Template, Version 3, Brownfields Projects. R9QA/008.1, August

United States Geological Survey, (USGS), provisional edition, 1995. 7.5-minute quadrangle map of Lake Combie, California

FIGURES Figure 1 Location Map

Figure 2 Vicinity Map

Figure 3 Boring and Trench Locations

Figure 4 Cross Sections



TABLES

Table 1 Boring Locations and Elevations

Table 2 Total Metals in Sediment Samples

Table 3 Methylmercury in Sediment Samples

Table 4 Summary of Particle Size Analysis, Full Sediment Column

Table 5 Summary of Particle Size Analysis for Shallow Sediment

Table 1 - Boring Locations, Elevations and Depths

Combie ReservoirMeadow Vista, California

Boring No.

Latitude (decimal degrees)

Longitude(decimal degrees)

Elevation of Sediment Surface

(feet above MSL)

Total Depth of Boring

(feet)

Depth to Native

Soil/Rock (feet)

C-1 39.017916 -121.035728 1596.8 30 22C-2 39.017517 -121.035769 1597.5 35 32C-3 39.017177 -121.035801 1597.5 25 21C-4 39.017521 -121.035476 1597.0 30 28C-5 39.017167 -121.035361 1597.0 20 16C-6 39.017657 -121.036400 1598.5 35 29C-7 39.017912 -121.036362 1600.5 35 32C-8 39.018152 -121.036342 1600.5 35 32C-9 39.016475 -121.037144 1597.8 25 NAC-10 39.017036 -121.036890 1598.0 37 32C-11 39.017545 -121.036764 1599.5 30 29C-12 39.016871 -121.037584 1597.5 30 28C-13 39.017373 -121.037527 1599.4 25 NAC-14 39.017803 -121.037579 1601.1 20 NAC-15 39.016194 -121.038083 1596.4 36 35C-16 39.015835 -121.039161 1593.6 38 34C-17 39.015343 -121.038506 1594.1 38 NAC-18 39.015087 -121.040222 1592.2 27 26C-19 39.014589 -121.039529 1591.9 42 NAC-20 39.017644 -121.034478 1592.0 24 22C-21 39.017651 -121.033506 1591.5 10 5

Notes:MSL = mean sea levelNA = native soil/rock not encountered

1/19/2018 Page 1 of 1 4688-01 Tables 1 through 5.xlsx

Table 2 - Total Metals in Sediment SamplesCombie ReservoirMeadow Vista, California

Sample IDSample

DateUnit

Sample Depth

(ft)

Alu

min

um

An

tim

on

y,

me

tall

ic

Ars

en

ic,

ino

rgan

ic

Ba

riu

m

Be

ryll

ium

an

d

co

mp

ou

nd

s

Ca

dm

ium

Ch

rom

ium

, t

ota

l (1)

Ch

rom

ium

, h

ex

av

ale

nt

Co

bal

t

Co

pp

er

Go

ld

Le

ad

an

d

co

mp

ou

nd

s

Me

rcu

ry,

ele

me

nta

l

Mo

lyb

de

nu

m

Nic

ke

l,

so

lub

le s

alt

s

Se

len

ium

Sil

ve

r

Th

all

ium

, s

olu

ble

sa

lts

Va

na

diu

m a

nd

c

om

po

un

ds

Zin

c a

nd

c

om

po

un

ds

6010B 6010B 6010B 6010B 6010B 6010B 6010B 3060A/7199 6010B 6010B 3050B 6010B 7471A 6010B 6010B 6010B 6010B 6010B 6010B 6010B

7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-43-9 16065-83-1 18540-29-9 7440-48-4 7440-50-8 7440-57-5 7439-92-1 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-22-4 7440-28-0 7440-62-2 7440-66-6

2.9 0.32 0.7 0.1 0.04 0.09 0.12 0.025 0.1 0.11 NL 0.11 0.005 - 0.02 0.13 0.10 0.88 0.12 0.041 0.20 0.49

25 2.0 1.0 1.0 1.0 1.0 1.0 0.2 1.0 2.0 1.0 1.0 0.10 1.0 1.0 1.0 1.0 0.25 1.0 1.0

7.70E+04 31 0.067 15,000 15 5.2 36,000 0.3 23 3,100 NE 80 1.0 390 490 390 390 0.78 390 23,000

1.10E+06 470 0.25 2.2E+05 210 7.3 2.7E+05 6.3 350 47,000 NE 320 4.5 5,800 3,100 5,800 1,500 12 1,000 3.5E+05

RSL RSL DTSC-SL RSL DTSC-SL DTSC-SL DTSC-SL RSL RSL RSL -- DTSC-SL DTSC-SL RSL DTSC-SL RSL RSL RSL DTSC-SL RSL

NE 500 500 10,000 10,000 100 2,500 500 2,500 18,000 NE 1,000 20 3,500 2,000 100 500 700 2,400 5,000

C-1-1 10/19/16 mg/kg 11-12 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-1-2 10/19/16 mg/kg 21-22 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.22 -- -- -- -- -- -- --

C-2-1 10/19/16 mg/kg 15-16 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-2-2 10/19/16 mg/kg 30-31 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.18 -- -- -- -- -- -- --

C-3-1 10/19/16 mg/kg 7-8 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-3-2 10/19/16 mg/kg 17-18 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.61 -- -- -- -- -- -- --

C-4-1 10/19/16 mg/kg 16-17 4700 <2.0 6.0 25 <1.0 <1.0 15 <0.2 3.6 6.7 <1.0 2.1 <0.1 <1.0 14 <1.0 <1.0 <0.25 11 11

C-4-2 10/19/16 mg/kg 26-27 22000 <2.0 9.1 61 <1.0 <1.0 51 <0.2 5.4 25 <1.0 7.0 0.30 <1.0 20 <1.0 <1.0 <0.25 64 22

C-5-1 10/19/16 mg/kg 6-7 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.48 -- -- -- -- -- -- --

C-5-2 10/19/16 mg/kg 12-13 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-6-1 10/20/16 mg/kg 16-17 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-6-2 10/20/16 mg/kg 24-25 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-7-1 10/20/16 mg/kg 16-17 2500 <2.0 3.0 19 <1.0 <1.0 16 <0.2 2.9 6.5 <1.0 1.5 <0.1 <1.0 12 <1.0 <1.0 <0.25 10 10

C-7-2 10/20/16 mg/kg 28-29 1700 <2.0 3.0 13 <1.0 <1.0 12 <0.2 2.0 4.6 <1.0 1.2 <0.1 <1.0 8.3 <1.0 <1.0 <0.25 6.1 7.6

C-8-1 10/20/16 mg/kg 17-18 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-8-2 10/20/16 mg/kg 26-27 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-9-1 10/24/16 mg/kg 11-12 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-9-2 10/24/16 mg/kg 20-21 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-10-1 10/24/16 mg/kg 17-18 4700 <2.0 7.2 46 <1.0 <1.0 19 <0.2 4.8 9.7 <1.0 3.4 <0.1 <1.0 18 <1.0 <1.0 <0.25 15 16

C-10-2 10/24/16 mg/kg 31-32 3500 <2.0 11 31 <1.0 <1.0 15 <0.2 4.4 7.3 <1.0 2.2 <0.1 <1.0 15 <1.0 <1.0 <0.25 11 14

C-11-1 10/24/16 mg/kg 12-13 5600 <2.0 3.9 38 <1.0 <1.0 33 <0.2 6.7 12 <1.0 3.1 <0.1 <1.0 36 <1.0 <1.0 <0.25 18 15

C-11-2 10/24/16 mg/kg 25-26 2800 <2.0 7.5 26 <1.0 <1.0 14 <0.2 3.5 6.4 <1.0 2.2 <0.1 <1.0 13 <1.0 <1.0 <0.25 9.7 14

C-12-1 10/24/16 mg/kg 16-17 1700 <2.0 2.9 13 <1.0 <1.0 9.9 <0.2 2.2 4.3 <1.0 1.2 <0.1 <1.0 8.8 <1.0 <1.0 <0.25 6.1 7.4

C-12-2 10/24/16 mg/kg 22-23 1800 <2.0 2.9 17 <1.0 <1.0 11 <0.2 2.4 4.6 <1.0 1.3 <0.1 <1.0 8.2 <1.0 <1.0 <0.25 6.8 7.2

C-13-1 10/24/16 mg/kg 12-13 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-13-2 10/24/16 mg/kg 24-25 -- -- -- -- -- -- -- -- -- -- <1.0 -- <0.1 -- -- -- -- -- -- --

C-14-1 10/24/16 mg/kg 10-11 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.13 -- -- -- -- -- -- --

C-14-2 10/24/16 mg/kg 19-20 -- -- -- -- -- -- -- -- -- -- <1.0 -- 0.16 -- -- -- -- -- -- --

C-15 10/17/17 mg/kg 0-5 -- -- -- -- -- -- -- -- -- -- -- -- 0.42 -- -- -- -- -- -- --

Screening Levels

Residential Soil

Commercial Soil

Basis for Screening Level

TTLC

Results

USEPA Method

CAS No.

Method Detection Limit

Reporting Limit


Table 2 - Total Metals in Sediment SamplesCombie ReservoirMeadow Vista, California

Sample IDSample

DateUnit

Sample Depth

(ft)

Alu

min

um

An

tim

on

y,

me

tall

ic

Ars

en

ic,

ino

rgan

ic

Ba

riu

m

Be

ryll

ium

an

d

co

mp

ou

nd

s

Ca

dm

ium

Ch

rom

ium

, t

ota

l (1)

Ch

rom

ium

, h

ex

av

ale

nt

Co

bal

t

Co

pp

er

Go

ld

Le

ad

an

d

co

mp

ou

nd

s

Me

rcu

ry,

ele

me

nta

l

Mo

lyb

de

nu

m

Nic

ke

l,

so

lub

le s

alt

s

Se

len

ium

Sil

ve

r

Th

all

ium

, s

olu

ble

sa

lts

Va

na

diu

m a

nd

c

om

po

un

ds

Zin

c a

nd

c

om

po

un

ds

6010B 6010B 6010B 6010B 6010B 6010B 6010B 3060A/7199 6010B 6010B 3050B 6010B 7471A 6010B 6010B 6010B 6010B 6010B 6010B 6010B

7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-43-9 16065-83-1 18540-29-9 7440-48-4 7440-50-8 7440-57-5 7439-92-1 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-22-4 7440-28-0 7440-62-2 7440-66-6

2.9 0.32 0.7 0.1 0.04 0.09 0.12 0.025 0.1 0.11 NL 0.11 0.005 - 0.02 0.13 0.10 0.88 0.12 0.041 0.20 0.49

25 2.0 1.0 1.0 1.0 1.0 1.0 0.2 1.0 2.0 1.0 1.0 0.10 1.0 1.0 1.0 1.0 0.25 1.0 1.0

7.70E+04 31 0.067 15,000 15 5.2 36,000 0.3 23 3,100 NE 80 1.0 390 490 390 390 0.78 390 23,000

1.10E+06 470 0.25 2.2E+05 210 7.3 2.7E+05 6.3 350 47,000 NE 320 4.5 5,800 3,100 5,800 1,500 12 1,000 3.5E+05

RSL RSL DTSC-SL RSL DTSC-SL DTSC-SL DTSC-SL RSL RSL RSL -- DTSC-SL DTSC-SL RSL DTSC-SL RSL RSL RSL DTSC-SL RSL

NE 500 500 10,000 10,000 100 2,500 500 2,500 18,000 NE 1,000 20 3,500 2,000 100 500 700 2,400 5,000

Screening Levels

Residential Soil

Commercial Soil

Basis for Screening Level

TTLC

Results

USEPA Method

CAS No.


Reporting Limit

C-16 10/17/17 mg/kg 0-6.5 -- -- -- -- -- -- -- -- -- -- -- -- 0.63 -- -- -- -- -- -- --

C-17 10/17/17 mg/kg 0-5 -- -- -- -- -- -- -- -- -- -- -- -- 0.47 -- -- -- -- -- -- --

C-18 10/17/17 mg/kg 0-5 -- -- -- -- -- -- -- -- -- -- -- -- 0.48 -- -- -- -- -- -- --

C-19 10/17/17 mg/kg 0-5 -- -- -- -- -- -- -- -- -- -- -- -- 0.38 -- -- -- -- -- -- --

Notes:1 Total chromium (CAS No. 7440-47-3) results compared to RSLs for Chromium III (CAS No. 16065-83-1) NL = not listedCAS = Chemical Abstracts Service registry number RSL = USEPA Region 9 Regional Screening LevelDTSC-SL = California Department of Toxic Substances Control (DTSC) Screening Level (SL), as set forth in Human Health Risk Assessment (HHRA) Note 3 (DTSC; August 2017) TTLC = Total Threshold Limit Concentrationmg/kg = milligrams per kilogram -- = not analyzed


Table 3 - Methylmercury in Sediment Samples


Sample ID Sample Date UnitSample Depth

(ft)

Moisture Content

(%)

Methylmercury (ug/kg,

wet weight)

Methylmercury (ug/kg,

dry weight1)

C4-1 10/18/16 ug/kg 16-17 19 0.11 0.13C4-2 10/18/16 ug/kg 26-27 30 <0.05 <0.05C7-1 10/19/16 ug/kg 16-17 19 <0.05 <0.05C7-2 10/19/16 ug/kg 28-29 18 <0.05 <0.05C10-1 10/24/16 ug/kg 17-18 25 <0.05 <0.05C10-2 10/24/16 ug/kg 31-32 9.7 <0.05 <0.05C11-1 10/24/16 ug/kg 12-13 22 0.45 0.55C11-2 10/24/16 ug/kg 25-26 8.4 0.08 J 0.09 JC12-1 10/24/16 ug/kg 16-17 5.1 0.08 J 0.08 JC12-2 10/24/16 ug/kg 22-23 10 <0.05 <0.05C-15 10/17/17 ug/kg 0-5 27 0.25 0.32C-16 10/17/17 ug/kg 0-6.5 33 0.36 0.48C-17 10/17/17 ug/kg 0-5 26 0.16 0.20C-18 10/17/17 ug/kg 0-5 35 0.36 0.49C-19 10/17/17 ug/kg 0-5 27 0.26 0.33

Notes:1 Dry weight estimated from wet weight laboratory result based on listed moisture content.CAS = Chemical Abstracts ServiceJ = value was detected between MDL and RL and is an estimated valueRSL = USEPA Region 9 Regional Screening Levelug/kg = micrograms per kilogramUSEPA = United States Environmental Protection Agency

Results

1630

22967-92-6

0.05

0.10

RSL

7,800

120,000

USEPA Method

CAS No.


Reporting Limit

Residential Soil

Commercial SoilScreening

LevelsBasis for Screening Level


Table 4 - Summary of Particle Size Analysis, Full Sediment Column


3/8 in No. 4 No. 8 No. 16 No. 30 No. 50 No. 100 No. 200

C-1-COMP 10/19/16 0-22 100.0 100.0 100 100 97 92 61.7 45.4 SM Silty sand, brown (7.5YR 4/2)C-2-COMP 10/19/16 0-32 100.0 99.9 94 90 89 82 71.1 58.9 ML Sandy silt, dark grayish brown (10YR 4/2)C-3-COMP 10/19/16 0-21 100.0 100.0 100 100 97 81 60.0 41.1 SM Silty sand, dark grayish brown (10YR 4/2)C-4-COMP 10/19/16 0-28 100.0 100.0 100 100 100 95 31.8 9.0 SP/SM Poorly graded sand, dark grayish brown (10YR 4/2)C-5-COMP 10/19/16 0-16 98.0 98.0 97 95 94 89 71.9 56.2 ML Sandy silt, dark grayish brown (10YR 4/2)C-6-COMP 10/20/16 0-29 99.3 99.1 99 98 96 80 49.4 34.3 SM Silty sand, dark grayish brown (10YR 4/2)C-7-COMP 10/20/16 0-32 100.0 100.0 100 100 96 80 53.3 36.4 SM Silty sand, dark grayish brown (10YR 4/2)C-8-COMP 10/20/16 0-28 99.7 99.7 99 98 95 82 66.1 54.3 ML Sandy silt, dark grayish brown (10YR 4/2)C-9-COMP 10/24/16 0-25 98.7 98.7 98 98 96 85 63.9 45.4 SM Silty sand, dark grayish brown (10YR 4/2)

C-10-COMP 10/24/16 0-34 100.0 99.9 99 99 93 70 35.2 19.0 SM Silty sand, dark grayish brown (10YR 4/2)C-11-COMP 10/24/16 0-30 99.7 99.5 99 99 95 72 43.1 29.0 SM Silty sand, dark grayish brown (10YR 4/2)C-12-COMP 10/24/16 0-30 100.0 99.8 99 99 96 70 30.7 15.4 SM Silty sand, dark grayish brown (10YR 4/2)C-13-COMP 10/24/16 0-25 99.1 99.1 99 99 92 64 34.8 19.3 SM Silty sand, dark grayish brown (10YR 4/2)

C-14-COMP 10/24/16 0-20 99.5 99.3 99 99 90 66 45.2 31.9 SM Silty sand, dark grayish brown (10YR 4/2)

99.6 99.5 98.7 98.1 94.7 79.1 51.3 35.40.4 0.5 1.3 1.9 5.3 20.9 48.7 64.6

0.5

64.1

35.4

Notes:1 Results are based on ASTM D422 particle size analysis of 1.-5 inch diameter sediment column obtained by direct push.2 Gravel content may be under-represented based on the sampling tools (1.5-inch inside diameter direct push core barrel) USCS = Unified Soil Classification System

DescriptionSample No. DateDepth

(ft)

Percent Passing1 (% by mass) USCS Symbol

Average sand content (average percent passing No. 4 sieve and retained on No. 200 sieve)Average fines content (silt and clay; average percent passing No. 200 sieve)

Average Percent Passing

Average Percent Retained

Average gravel2 content (average percent retained on No. 4 sieve)


Table 5 - Summary of Particle Size Analysis for Shallow Sediment


3/8 in No. 4 No. 8 No. 16

No. 30

No. 50

No. 100

No. 200

C-15 10/13/17 0-5 100.0 100.0 100 100 100 100 89.3 70.5 ML Silt with sand, brown (10YR 4/4)C-16 10/13/17 0-6.5 100.0 100.0 100 100 100 100 97.4 87.9 ML Silt, dark greyish brown (10YR 4/2)C-17 10/13/17 0-5 100.0 100.0 100 100 98 50 63.4 48.2 SM Silty sand, brown (10YR 4/3)C-18 10/13/17 0-5 100.0 100.0 100 100 100 100 98.6 88.3 ML Silt, light olive brown (2.5YR 5/6)

C-19 10/13/17 0-5 100.0 100.0 100 100 97 84 66.7 51.4 ML Sandy silt, brown (10YR 4/4)

100.0 100.0 100.0 100.0 99.0 86.8 83.1 69.30.0 0.0 0.0 0.0 1.0 13.2 16.9 30.7

0.0

30.7

69.3

Notes:1 Results are based on ASTM D422 particle size analysisUSCS = Unified Soil Classification System

Average gravel2 content (average percent retained on No. 4 sieve)Average sand content (average percent passing No. 4 sieve and retained on No. 200 sieve)Average fines content (silt and clay; average percent passing No. 200 sieve)

Average Percent Passing

Average Percent Retained

Sample No.

DateDepth

(ft)

Percent Passing1 (% by mass)Description

USCS Symbol


APPENDIX A

Analytical Laboratory Reports and Chain-of-Custody Documentation

Monday, December 05, 2016

Bryan BotsfordHoldrege & Kull Consulting Engineers and Geologists792 Searls AvenueNevada City, CA 95959

Re Lab Order: Project ID:

R101304COMBIE RESERVOIR/ 4688-01

Collected By: PO/Contract #:

Bryan Botsford

Dear Bryan Botsford:

Enclosed are the analytical results for sample(s) received by the laboratory on Thursday, October 27, 2016. Results reported herein conform to themost current NELAC standards, where applicable, unless otherwise narrated in the body of the report.

If you have any questions concerning this report, please feel free to contact me.

Enclosures

Project Manager: Eli N. Greenwald

Page 1 of 8

NELAP/ORELAP Certification 4036 CA-ELAP Certification 1664

(707) 258-4000 • Fax (707) 226-1001 • e-mail: [email protected] North Kelly Road • Napa, California 94558

without the written consent of CALTEST ANALYTICAL LABORATORYThis report shall not be reproduced, except in full,

REPORT OF LABORATORY ANALYSIS12/5/2016 05:06

SAMPLE SUMMARY Lab Order: Project ID:


Lab ID Sample ID Matrix Date Collected Date Received

R101304001 C4-1 Solid 10/19/2016 04:10 10/27/2016 10:45

R101304002 C4-2 Solid 10/18/2016 16:30 10/27/2016 10:45

R101304003 C7-1 Solid 10/19/2016 11:50 10/27/2016 10:45

R101304004 C7-2 Solid 10/19/2016 11:38 10/27/2016 10:45

R101304005 C10-1 Solid 10/24/2016 10:25 10/27/2016 10:45

R101304006 C10-2 Solid 10/24/2016 10:05 10/27/2016 10:45

R101304007 C11-1 Solid 10/24/2016 10:50 10/27/2016 10:45

R101304008 C11-2 Solid 10/24/2016 11:10 10/27/2016 10:45

R101304009 C12-1 Solid 10/24/2016 13:20 10/27/2016 10:45

R101304010 C12-2 Solid 10/24/2016 13:40 10/27/2016 10:45

Page 2 of 8





NARRATIVE Lab Order: Project ID:


General Qualifiers and Notes

Caltest authorizes this report to be reproduced only in its entirety. Results are specific to the sample(s) as submitted and only tothe parameter(s) reported.

Caltest certifies that all test results for wastewater and hazardous waste analyses meet all applicable NELAC requirements; allmicrobiology and drinking water testing meet applicable ELAP requirements, unless stated otherwise.

All analyses performed by EPA Methods or Standard Methods (SM) 20th Edition except where noted (SMOL=online edition).

Caltest collects samples in compliance with 40 CFR, EPA Methods, Cal. Title 22, and Standard Methods.

Dilution Factors (DF) reported greater than '1' have been used to adjust the result, Reporting Limit (RL), and Method DetectionLimit (MDL).

All Solid, sludge, and/or biosolids data is reported in Wet Weight, unless otherwise specified.

Filtrations performed at Caltest for dissolved metals (excluding mercury) and/or pH analysis are not performed within the 15minute holding time as specified by 40CFR 136.3 table II.

Results Qualifiers: Report fields may contain codes and non-numeric data correlating to one or more of the following definitions:

ND - Non Detect - indicates analytical result has not been detected.

RL - Reporting Limit is the quantitation limit at which the laboratory is able to detect an analyte. An analyte not detected at orabove the RL is reported as ND unless otherwise noted or qualified. For analyses pertaining to the State Implementation Plan ofthe California Toxics Rule, the Caltest Reporting Limit (RL) is equivalent to the Minimum Level (ML). A standard is always run at orbelow the ML. Where Reporting Limits are elevated due to dilution, the ML calibration criteria has been met.

J - reflects estimated analytical result value detected below the Reporting Limit (RL) and above the Method Detection Limit (MDL).The 'J' flag is equivalent to the DNQ Estimated Concentration flag.

E - indicates an estimated analytical result value.

B - indicates the analyte has been detected in the blank associated with the sample.

NC - means not able to be calculated for RPD or Spike Recoveries.

SS - compound is a Surrogate Spike used per laboratory quality assurance manual.

NOTE: This document represents a complete Analytical Report for the samples referenced herein and should be retained as apermanent record thereof.

Page 3 of 8





ANALYTICAL RESULTS Lab Order: Project ID:


Solid results are reported on a wet weight basis.

Lab ID Sample ID

R101304001 Date CollectedDate Received

10/19/2016 04:1010/27/2016 10:45

Matrix SolidResults are expressed as wet weight values

Parameters Result Units R. L. MDL DF Prepared Batch Analyzed Batch Qual

C4-1

Prep Method: EPA 1630 JSPrep by:Methyl Mercury AnalysisAnalytical Method: EPA 1630 JSAnalyzed by:

0.11 ug/kg 0.10 0.05 1 12/01/16 00:00 MPR 14791 12/02/16 00:00 MHG 5450Methyl Mercury

Lab ID Sample ID


10/18/2016 16:3010/27/2016 10:45



C4-2


ND ug/kg 0.10 0.05 1 12/01/16 00:00 MPR 14791 12/02/16 00:00 MHG 5450Methyl Mercury

Lab ID Sample ID


10/19/2016 11:5010/27/2016 10:45



C7-1



Lab ID Sample ID


10/19/2016 11:3810/27/2016 10:45



C7-2



Lab ID Sample ID


10/24/2016 10:2510/27/2016 10:45



C10-1



Page 4 of 8








Lab ID Sample ID


10/24/2016 10:0510/27/2016 10:45



C10-2



Lab ID Sample ID


10/24/2016 10:5010/27/2016 10:45



C11-1


0.45 ug/kg 0.10 0.05 1 12/01/16 00:00 MPR 14791 12/02/16 00:00 MHG 5450Methyl Mercury

Lab ID Sample ID


10/24/2016 11:1010/27/2016 10:45



C11-2


J0.08 ug/kg 0.10 0.05 1 12/01/16 00:00 MPR 14791 12/02/16 00:00 MHG 5450Methyl Mercury

Lab ID Sample ID


10/24/2016 13:2010/27/2016 10:45



C12-1


J0.08 ug/kg 0.10 0.05 1 12/01/16 00:00 MPR 14791 12/02/16 00:00 MHG 5450Methyl Mercury

Lab ID Sample ID


10/24/2016 13:4010/27/2016 10:45



C12-2



Page 5 of 8





QUALITY CONTROL DATA Lab Order: Project ID:


Analysis Description:

Analysis Method:

QC Batch:

QC Batch Method:

Methyl Mercury Analysis

EPA 1630

MPR/14791

EPA 1630

METHOD BLANK: 728455

Parameter ResultBlank Reporting

Limit MDL Units Qualifiers

ND 0.10 0.05 ug/kgMethyl Mercury

LABORATORY CONTROL SAMPLE: 728456

Parameter UnitsSpikeConc.

LCSResult

LCS% Rec

% RECLimits Qualifier

ug/kg 75 69.4 93 45-130Methyl Mercury

MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 728458 728459

Parameter Units Result Conc. Result Result % Rec % Rec Limit RPD RPD QualifiersR101304001 Spike MS MSD MS MSD % Rec Max

ug/kg 0.11 1 0.88 1.32 77 121 30-130 40 50Methyl Mercury

Page 6 of 8





QUALITY CONTROL DATA QUALIFIERS Lab Order: Project ID:


QUALITY CONTROL PARAMETER QUALIFIERS

Results Qualifiers: Report fields may contain codes and non-numeric data correlating to one or more of the followingdefinitions:

NS - means not spiked and will not have recoveries reported for Analyte Spike Amounts

QC Codes Keys: These descriptors are used to help identify the specific QC samples and clarify the report.

MB - Method Blank

Method Blanks are reported to the same Method Detection Limits (MDLs) or Reporting Limits (RLs) as the analyticalsamples in the corresponding QC batch.

LCS/LCSD - Laboratory Control Spike / Laboratory Control Spike Duplicate

DUP - Duplicate of Original Sample Matrix

MS/MSD - Matrix Spike / Matrix Spike Duplicate

RPD - Relative Percent Difference

%Recovery - Spike Recovery stated as a percentage

Page 7 of 8





QUALITY CONTROL DATA CROSS REFERENCE TABLE Lab Order: Project ID:


Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch

R101304001 C4-1 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304002 C4-2 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304003 C7-1 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304004 C7-2 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304005 C10-1 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304006 C10-2 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304007 C11-1 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304008 C11-2 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304009 C12-1 EPA 1630 MPR/14791 EPA 1630 MHG/5450

R101304010 C12-2 EPA 1630 MPR/14791 EPA 1630 MHG/5450

Page 8 of 8





Monday, November 06, 2017

Bryan BotsfordHoldrege & Kull Consulting Engineers and Geologists792 Searls AvenueNevada City, CA 95959

Re Lab Order: Project ID:

S100823COMBIE RESERVOIR / 4688-01

Collected By: PO/Contract #:

BRYAN BOTSFORDPD/$900.00

Dear Bryan Botsford:

Enclosed are the analytical results for sample(s) received by the laboratory on Friday, October 20, 2017. Results reported herein conform to themost current NELAC standards, where applicable, unless otherwise narrated in the body of the report.

If you have any questions concerning this report, please feel free to contact me.

Enclosures

Project Manager: Sandralyn Luna

Page 1 of 7





SAMPLE SUMMARY Lab Order: Project ID:


Lab ID Sample ID Matrix Date Collected Date Received

S100823001 C-15 Solid 10/17/2017 13:00 10/20/2017 09:32

S100823002 C-16 Solid 10/17/2017 13:30 10/20/2017 09:32

S100823003 C-17 Solid 10/17/2017 14:00 10/20/2017 09:32

S100823004 C-18 Solid 10/17/2017 14:30 10/20/2017 09:32

S100823005 C-19 Solid 10/17/2017 15:00 10/20/2017 09:32

Page 2 of 7





NARRATIVE Lab Order: Project ID:


General Qualifiers and Notes

Caltest authorizes this report to be reproduced only in its entirety. Results are specific to the sample(s) as submitted and only tothe parameter(s) reported.

Caltest certifies that all test results for wastewater and hazardous waste analyses meet all applicable NELAC requirements; allmicrobiology and drinking water testing meet applicable ELAP requirements, unless stated otherwise.

All analyses performed by EPA Methods or Standard Methods (SM) 20th Edition except where noted (SMOL=online edition).

Caltest collects samples in compliance with 40 CFR, EPA Methods, Cal. Title 22, and Standard Methods.

Dilution Factors (DF) reported greater than '1' have been used to adjust the result, Reporting Limit (RL), and Method DetectionLimit (MDL).

All Solid, sludge, and/or biosolids data is reported in Wet Weight, unless otherwise specified.

Filtrations performed at Caltest for dissolved metals (excluding mercury) and/or pH analysis are not performed within the 15minute holding time as specified by 40CFR 136.3 table II.

Results Qualifiers: Report fields may contain codes and non-numeric data correlating to one or more of the following definitions:

ND - Non Detect - indicates analytical result has not been detected.

RL - Reporting Limit is the quantitation limit at which the laboratory is able to detect an analyte. An analyte not detected at orabove the RL is reported as ND unless otherwise noted or qualified. For analyses pertaining to the State Implementation Plan ofthe California Toxics Rule, the Caltest Reporting Limit (RL) is equivalent to the Minimum Level (ML). A standard is always run at orbelow the ML. Where Reporting Limits are elevated due to dilution, the ML calibration criteria has been met.

J - reflects estimated analytical result value detected below the Reporting Limit (RL) and above the Method Detection Limit (MDL).The 'J' flag is equivalent to the DNQ Estimated Concentration flag.

E - indicates an estimated analytical result value.

B - indicates the analyte has been detected in the blank associated with the sample.

NC - means not able to be calculated for RPD or Spike Recoveries.

SS - compound is a Surrogate Spike used per laboratory quality assurance manual.

NOTE: This document represents a complete Analytical Report for the samples referenced herein and should be retained as apermanent record thereof.

Page 3 of 7








Lab ID Sample ID

S100823001 Date CollectedDate Received

10/17/2017 13:0010/20/2017 09:32



C-15

Prep Method: EPA 1630 MPIPrep by:Methyl Mercury AnalysisAnalytical Method: EPA 1630 MPIAnalyzed by:

0.25 ug/kg 0.10 0.05 1 10/31/17 00:00 MPR 15462 11/02/17 00:00 MHG 5725Methyl Mercury (as Hg)

Lab ID Sample ID


10/17/2017 13:3010/20/2017 09:32



C-16



Lab ID Sample ID


10/17/2017 14:0010/20/2017 09:32



C-17



Lab ID Sample ID


10/17/2017 14:3010/20/2017 09:32



C-18



Lab ID Sample ID


10/17/2017 15:0010/20/2017 09:32



C-19



Page 4 of 7





QUALITY CONTROL DATA Lab Order: Project ID:


Analysis Description:

Analysis Method:

QC Batch:

QC Batch Method:

Methyl Mercury Analysis

EPA 1630

MPR/15462

EPA 1630

METHOD BLANK: 785970

Parameter ResultBlank Reporting

Limit MDL Units Qualifiers

ND 0.10 0.05 ug/kgMethyl Mercury (as Hg)

LABORATORY CONTROL SAMPLE: 785971

Parameter UnitsSpikeConc.

LCSResult

LCS% Rec

% RECLimits Qualifier

ug/kg 75 77.6 103 35-155Methyl Mercury (as Hg)

MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 785973 785974

Parameter Units Result Conc. Result Result % Rec % Rec Limit RPD RPD QualifiersS100823001 Spike MS MSD MS MSD % Rec Max

ug/kg 0.25 1 1.09 1.07 84 82 30-178 1.9 50Methyl Mercury (as Hg)

Page 5 of 7





QUALITY CONTROL DATA QUALIFIERS Lab Order: Project ID:


QUALITY CONTROL PARAMETER QUALIFIERS

Results Qualifiers: Report fields may contain codes and non-numeric data correlating to one or more of the followingdefinitions:

NS - means not spiked and will not have recoveries reported for Analyte Spike Amounts

QC Codes Keys: These descriptors are used to help identify the specific QC samples and clarify the report.

MB - Method Blank

Method Blanks are reported to the same Method Detection Limits (MDLs) or Reporting Limits (RLs) as the analyticalsamples in the corresponding QC batch.

LCS/LCSD - Laboratory Control Spike / Laboratory Control Spike Duplicate

DUP - Duplicate of Original Sample Matrix

MS/MSD - Matrix Spike / Matrix Spike Duplicate

RPD - Relative Percent Difference

%Recovery - Spike Recovery stated as a percentage

Page 6 of 7





QUALITY CONTROL DATA CROSS REFERENCE TABLE Lab Order: Project ID:


Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch

S100823001 C-15 EPA 1630 MPR/15462 EPA 1630 MHG/5725

S100823002 C-16 EPA 1630 MPR/15462 EPA 1630 MHG/5725

S100823003 C-17 EPA 1630 MPR/15462 EPA 1630 MHG/5725

S100823004 C-18 EPA 1630 MPR/15462 EPA 1630 MHG/5725

S100823005 C-19 EPA 1630 MPR/15462 EPA 1630 MHG/5725

Page 7 of 7





November 09, 2016

792 Searls Avenue

Nevada City, CA 95959

Bryan Botsford

Tel: (530) 478-1305

Fax:(530) 478-1019

Holdrege & Kull Consulting Engineers & GeologistsELAP No.: 1838

CSDLAC No.: 10196

ORELAP No.: CA300003

TCEQ No. : T104704502

Re: ATL Work Order Number :

Client Reference :

1603809

Enclosed are the results for sample(s) received on October 27, 2016 by Advanced Technology

Laboratories. The sample(s) are tested for the parameters as indicated on the enclosed chain of

custody in accordance with applicable laboratory certifications. The laboratory results contained

in this report specifically pertains to the sample(s) submitted.

Thank you for the opportunity to serve the needs of your company. If you have any questions,

please feel free to contact me or your Project Manager.

Sincerely,

Laboratory Director

COMBIE RESERVOIR,4688-01

Eddie Rodriguez

3275 Walnut Avenue, Signal Hill, CA 90755 � Tel: 562-989-4045 � Fax: 562-989-4040

www.atlglobal.com

The cover letter and the case narrative are an integral part of this analytical report and its absence renders the report invalid.

Test results contained within this data package meet the requirements of applicable state-specific certification programs. The

report cannot be reproduced without written permission from the client and Advanced Technology Laboratories .

Page 1 of 66

792 Searls Avenue

Nevada City , CA 95959

Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016

Holdrege & Kull Consulting Engineers & Geologists

Certificate of Analysis

Sample ID Laboratory ID Matrix Date Sampled Date Received

SUMMARY OF SAMPLES

C-1-1 1603809-01 Soil 10/19/16 13:35 10/27/16 12:30

C-1-2 1603809-02 Soil 10/19/16 14:00 10/27/16 12:30

C-2-1 1603809-03 Soil 10/19/16 14:30 10/27/16 12:30

C-2-2 1603809-04 Soil 10/19/16 14:40 10/27/16 12:30

C-3-1 1603809-05 Soil 10/19/16 15:00 10/27/16 12:30

C-3-2 1603809-06 Soil 10/19/16 15:20 10/27/16 12:30

C-4-1 1603809-07 Soil 10/19/16 16:18 10/27/16 12:30

C-4-2 1603809-08 Soil 10/19/16 16:25 10/27/16 12:30

C-5-1 1603809-09 Soil 10/19/16 16:50 10/27/16 12:30

C-5-2 1603809-10 Soil 10/19/16 17:00 10/27/16 12:30

C-6-1 1603809-11 Soil 10/20/16 10:45 10/27/16 12:30

C-6-2 1603809-12 Soil 10/20/16 10:50 10/27/16 12:30

C-7-1 1603809-13 Soil 10/20/16 11:50 10/27/16 12:30

C-7-2 1603809-14 Soil 10/20/16 11:55 10/27/16 12:30

C-8-1 1603809-15 Soil 10/20/16 12:00 10/27/16 12:30

C-8-2 1603809-16 Soil 10/20/16 12:15 10/27/16 12:30

C-9-1 1603809-17 Soil 10/24/16 13:30 10/27/16 12:30

C-9-2 1603809-18 Soil 10/24/16 13:45 10/27/16 12:30

C-10-1 1603809-19 Soil 10/24/16 10:10 10/27/16 12:30

C-10-2 1603809-20 Soil 10/24/16 10:20 10/27/16 12:30

C-11-1 1603809-21 Soil 10/24/16 11:00 10/27/16 12:30

C-11-2 1603809-22 Soil 10/24/16 11:10 10/27/16 12:30

C-12-1 1603809-23 Soil 10/24/16 12:15 10/27/16 12:30

C-12-2 1603809-24 Soil 10/24/16 12:30 10/27/16 12:30

C-13-1 1603809-25 Soil 10/24/16 13:50 10/27/16 12:30

C-13-2 1603809-26 Soil 10/24/16 14:00 10/27/16 12:30

C-14-1 1603809-27 Soil 10/24/16 14:15 10/27/16 12:30

C-14-2 1603809-28 Soil 10/24/16 14:30 10/27/16 12:30

Samples for Hexavalent Chromium (7199) were subcontracted to Asset Laboratories with ELAP Cert.# 2676.

CASE NARRATIVE

3275 Walnut Avenue, Signal Hill, CA 90755 � Tel: 562-989-4045 � Fax: 562-989-4040 � www.atlglobal.com Page 2 of 66

792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-01

Client Sample ID C-1-1

Notes

Date/Time

AnalyzedPreparedBatchDilutionAnalyte

Percent Moisture Analyst: PT

Result

(% by Weight)(% by Weight)

PQL

1 B6K0093 11/01/2016 11/01/16 12:000.1020Percent Moisture

Notes

Date/Time


Total Metals by ICP-AES EPA 6010B Analyst: GO

Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:191.0NDGold

Notes

Date/Time


Mercury by AA (Cold Vapor) EPA 7471A Analyst: SB

Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 12:550.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-02


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:251.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 12:570.100.22Mercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-03


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:271.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 12:590.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-04


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:291.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:010.100.18Mercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-05


Notes

Date/Time



Result


PQL

1 B6K0093 11/01/2016 11/01/16 12:000.104.4Percent Moisture

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:311.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:070.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-06


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:331.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:090.100.61Mercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-07


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:39254700Aluminum

1 B6K0189 11/04/2016 11/07/16 11:391.0NDGold

Notes

Date/Time


Title 22 Metals by ICP-AES EPA 6010B Analyst: SB

Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:262.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:261.06.0Arsenic

1 B6K0052 11/03/2016 11/04/16 10:261.025Barium

1 B6K0052 11/03/2016 11/04/16 10:261.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:261.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:261.015Chromium

1 B6K0052 11/03/2016 11/04/16 10:261.03.6Cobalt

1 B6K0052 11/03/2016 11/04/16 10:262.06.7Copper

1 B6K0052 11/03/2016 11/04/16 10:261.02.1Lead

1 B6K0052 11/03/2016 11/04/16 10:261.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:261.014Nickel

1 B6K0052 11/03/2016 11/04/16 10:261.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:261.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:261.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:261.011Vanadium

1 B6K0052 11/03/2016 11/04/16 10:261.011Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:110.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-08


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:40 E2522000Aluminum

1 B6K0189 11/04/2016 11/07/16 11:401.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:272.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:271.09.1Arsenic

1 B6K0052 11/03/2016 11/04/16 10:271.061Barium

1 B6K0052 11/03/2016 11/04/16 10:271.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:271.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:271.051Chromium

1 B6K0052 11/03/2016 11/04/16 10:271.05.4Cobalt

1 B6K0052 11/03/2016 11/04/16 10:272.025Copper

1 B6K0052 11/03/2016 11/04/16 10:271.07.0Lead

1 B6K0052 11/03/2016 11/04/16 10:271.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:271.020Nickel

1 B6K0052 11/03/2016 11/04/16 10:271.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:271.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:271.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:271.064Vanadium

1 B6K0052 11/03/2016 11/04/16 10:271.022Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:130.100.30Mercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-09


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:421.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:150.100.48Mercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-10


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:441.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:170.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-11


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:451.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:190.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-12


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:471.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:210.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-13


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:49252500Aluminum

1 B6K0189 11/04/2016 11/07/16 11:491.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:322.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:321.03.0Arsenic

1 B6K0052 11/03/2016 11/04/16 10:321.019Barium

1 B6K0052 11/03/2016 11/04/16 10:321.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:321.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:321.016Chromium

1 B6K0052 11/03/2016 11/04/16 10:321.02.9Cobalt

1 B6K0052 11/03/2016 11/04/16 10:322.06.5Copper

1 B6K0052 11/03/2016 11/04/16 10:321.01.5Lead

1 B6K0052 11/03/2016 11/04/16 10:321.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:321.012Nickel

1 B6K0052 11/03/2016 11/04/16 10:321.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:321.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:321.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:321.010Vanadium

1 B6K0052 11/03/2016 11/04/16 10:321.010Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:230.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-14


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:52251700Aluminum

1 B6K0189 11/04/2016 11/07/16 11:521.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:342.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:341.03.0Arsenic

1 B6K0052 11/03/2016 11/04/16 10:341.013Barium

1 B6K0052 11/03/2016 11/04/16 10:341.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:341.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:341.012Chromium

1 B6K0052 11/03/2016 11/04/16 10:341.02.0Cobalt

1 B6K0052 11/03/2016 11/04/16 10:342.04.6Copper

1 B6K0052 11/03/2016 11/04/16 10:341.01.2Lead

1 B6K0052 11/03/2016 11/04/16 10:341.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:341.08.3Nickel

1 B6K0052 11/03/2016 11/04/16 10:341.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:341.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:341.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:341.06.1Vanadium

1 B6K0052 11/03/2016 11/04/16 10:341.07.6Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:250.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-15


Notes

Date/Time


Percent Moisture Analyst: BL

Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:541.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:320.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-16


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 11:561.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:340.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-17


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 12:021.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:360.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-18


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 12:041.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:380.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-19


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 12:06254700Aluminum

1 B6K0189 11/04/2016 11/07/16 12:061.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:422.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:421.07.2Arsenic

1 B6K0052 11/03/2016 11/04/16 10:421.046Barium

1 B6K0052 11/03/2016 11/04/16 10:421.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:421.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:421.019Chromium

1 B6K0052 11/03/2016 11/04/16 10:421.04.8Cobalt

1 B6K0052 11/03/2016 11/04/16 10:422.09.7Copper

1 B6K0052 11/03/2016 11/04/16 10:421.03.4Lead

1 B6K0052 11/03/2016 11/04/16 10:421.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:421.018Nickel

1 B6K0052 11/03/2016 11/04/16 10:421.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:421.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:421.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:421.015Vanadium

1 B6K0052 11/03/2016 11/04/16 10:421.016Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0131 11/03/2016 11/04/16 13:400.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-20


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0189 11/04/2016 11/07/16 12:08253500Aluminum

1 B6K0189 11/04/2016 11/07/16 12:081.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0052 11/03/2016 11/04/16 10:432.0NDAntimony

1 B6K0052 11/03/2016 11/04/16 10:431.011Arsenic

1 B6K0052 11/03/2016 11/04/16 10:431.031Barium

1 B6K0052 11/03/2016 11/04/16 10:431.0NDBeryllium

1 B6K0052 11/03/2016 11/04/16 10:431.0NDCadmium

1 B6K0052 11/03/2016 11/04/16 10:431.015Chromium

1 B6K0052 11/03/2016 11/04/16 10:431.04.4Cobalt

1 B6K0052 11/03/2016 11/04/16 10:432.07.3Copper

1 B6K0052 11/03/2016 11/04/16 10:431.02.2Lead

1 B6K0052 11/03/2016 11/04/16 10:431.0NDMolybdenum

1 B6K0052 11/03/2016 11/04/16 10:431.015Nickel

1 B6K0052 11/03/2016 11/04/16 10:431.0NDSelenium

1 B6K0052 11/03/2016 11/04/16 10:431.0NDSilver

1 B6K0052 11/03/2016 11/04/16 10:431.0NDThallium

1 B6K0052 11/03/2016 11/04/16 10:431.011Vanadium

1 B6K0052 11/03/2016 11/04/16 10:431.014Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:000.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-21


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 12:14255600Aluminum

1 B6K0190 11/04/2016 11/07/16 12:141.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0053 11/03/2016 11/04/16 09:502.0NDAntimony

1 B6K0053 11/03/2016 11/04/16 09:501.03.9Arsenic

1 B6K0053 11/03/2016 11/04/16 09:501.038Barium

1 B6K0053 11/03/2016 11/04/16 09:501.0NDBeryllium

1 B6K0053 11/03/2016 11/04/16 09:501.0NDCadmium

1 B6K0053 11/03/2016 11/04/16 09:501.033Chromium

1 B6K0053 11/03/2016 11/04/16 09:501.06.7Cobalt

1 B6K0053 11/03/2016 11/04/16 09:502.012Copper

1 B6K0053 11/03/2016 11/04/16 09:501.03.1Lead

1 B6K0053 11/03/2016 11/04/16 09:501.0NDMolybdenum

1 B6K0053 11/03/2016 11/04/16 09:501.036Nickel

1 B6K0053 11/03/2016 11/04/16 09:501.0NDSelenium

1 B6K0053 11/03/2016 11/04/16 09:501.0NDSilver

1 B6K0053 11/03/2016 11/04/16 09:501.0NDThallium

1 B6K0053 11/03/2016 11/04/16 09:501.018Vanadium

1 B6K0053 11/03/2016 11/04/16 09:501.015Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:020.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-22


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 12:19252800Aluminum

1 B6K0190 11/04/2016 11/07/16 12:191.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0053 11/03/2016 11/04/16 09:562.0NDAntimony

1 B6K0053 11/03/2016 11/04/16 09:561.07.5Arsenic

1 B6K0053 11/03/2016 11/04/16 09:561.026Barium

1 B6K0053 11/03/2016 11/04/16 09:561.0NDBeryllium

1 B6K0053 11/03/2016 11/04/16 09:561.0NDCadmium

1 B6K0053 11/03/2016 11/04/16 09:561.014Chromium

1 B6K0053 11/03/2016 11/04/16 09:561.03.5Cobalt

1 B6K0053 11/03/2016 11/04/16 09:562.06.4Copper

1 B6K0053 11/03/2016 11/04/16 09:561.02.2Lead

1 B6K0053 11/03/2016 11/04/16 09:561.0NDMolybdenum

1 B6K0053 11/03/2016 11/04/16 09:561.013Nickel

1 B6K0053 11/03/2016 11/04/16 09:561.0NDSelenium

1 B6K0053 11/03/2016 11/04/16 09:561.0NDSilver

1 B6K0053 11/03/2016 11/04/16 09:561.0NDThallium

1 B6K0053 11/03/2016 11/04/16 09:561.09.7Vanadium

1 B6K0053 11/03/2016 11/04/16 09:561.014Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:040.10NDMercury


792 Searls Avenue


Project Number :

Report To :


Bryan Botsford

Reported : 11/09/2016



Lab ID: 1603809-23


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:22251700Aluminum

1 B6K0190 11/04/2016 11/07/16 13:221.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0053 11/03/2016 11/04/16 09:572.0NDAntimony

1 B6K0053 11/03/2016 11/04/16 09:571.02.9Arsenic

1 B6K0053 11/03/2016 11/04/16 09:571.013Barium

1 B6K0053 11/03/2016 11/04/16 09:571.0NDBeryllium

1 B6K0053 11/03/2016 11/04/16 09:571.0NDCadmium

1 B6K0053 11/03/2016 11/04/16 09:571.09.9Chromium

1 B6K0053 11/03/2016 11/04/16 09:571.02.2Cobalt

1 B6K0053 11/03/2016 11/04/16 09:572.04.3Copper

1 B6K0053 11/03/2016 11/04/16 09:571.01.2Lead

1 B6K0053 11/03/2016 11/04/16 09:571.0NDMolybdenum

1 B6K0053 11/03/2016 11/04/16 09:571.08.8Nickel

1 B6K0053 11/03/2016 11/04/16 09:571.0NDSelenium

1 B6K0053 11/03/2016 11/04/16 09:571.0NDSilver

1 B6K0053 11/03/2016 11/04/16 09:571.0NDThallium

1 B6K0053 11/03/2016 11/04/16 09:571.06.1Vanadium

1 B6K0053 11/03/2016 11/04/16 09:571.07.4Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:100.10NDMercury


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Lab ID: 1603809-24


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:25251800Aluminum

1 B6K0190 11/04/2016 11/07/16 13:251.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0053 11/03/2016 11/04/16 09:582.0NDAntimony

1 B6K0053 11/03/2016 11/04/16 09:581.02.9Arsenic

1 B6K0053 11/03/2016 11/04/16 09:581.017Barium

1 B6K0053 11/03/2016 11/04/16 09:581.0NDBeryllium

1 B6K0053 11/03/2016 11/04/16 09:581.0NDCadmium

1 B6K0053 11/03/2016 11/04/16 09:581.011Chromium

1 B6K0053 11/03/2016 11/04/16 09:581.02.4Cobalt

1 B6K0053 11/03/2016 11/04/16 09:582.04.6Copper

1 B6K0053 11/03/2016 11/04/16 09:581.01.3Lead

1 B6K0053 11/03/2016 11/04/16 09:581.0NDMolybdenum

1 B6K0053 11/03/2016 11/04/16 09:581.08.2Nickel

1 B6K0053 11/03/2016 11/04/16 09:581.0NDSelenium

1 B6K0053 11/03/2016 11/04/16 09:581.0NDSilver

1 B6K0053 11/03/2016 11/04/16 09:581.0NDThallium

1 B6K0053 11/03/2016 11/04/16 09:581.06.8Vanadium

1 B6K0053 11/03/2016 11/04/16 09:581.07.2Zinc

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:120.10NDMercury


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Lab ID: 1603809-25


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:271.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:140.10NDMercury


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Lab ID: 1603809-26


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:291.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:160.10NDMercury


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Reported : 11/09/2016



Lab ID: 1603809-27


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:321.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:180.100.13Mercury


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Lab ID: 1603809-28


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0190 11/04/2016 11/07/16 13:331.0NDGold

Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B6K0132 11/04/2016 11/04/16 14:200.100.16Mercury


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QUALITY CONTROL SECTION

Percent Moisture - Quality Control

Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD

Limit(% by Weight) (% by Weight) Notes

Batch B6K0093 - No_Prep_WC1_S

Duplicate (B6K0093-DUP1) Source: 1603809-20 Prepared: 11/1/2016 Analyzed: 11/1/2016

10.9651 0.10 9.68858 NR 12.4 30Percent Moisture


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD

Limit(% by Weight) (% by Weight) Notes

Batch B6K0094 - No_Prep_WC1_S


21.5473 0.10 22.6134 NR 4.83 30Percent Moisture


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Total Metals by ICP-AES EPA 6010B - Quality Control

Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD

Limit(mg/kg) (mg/kg) Notes

Batch B6K0052 - EPA 3050B_S

Blank (B6K0052-BLK1) Prepared: 11/3/2016 Analyzed: 11/4/2016

ND 25 NRAluminum

ND 1.0 NRGold

LCS (B6K0052-BS1) Prepared: 11/3/2016 Analyzed: 11/4/2016

1001.76 25 1000.00 100 80 - 120Aluminum

ND 1.0 50.0000 NR 80 - 120Gold

Matrix Spike (B6K0052-MS1) Source: 1603809-20 Prepared: 11/3/2016 Analyzed: 11/4/2016

3512.35 25 1000.00 2782.86 72.9 0 - 256Aluminum

ND 1.0 125.000 ND NR 70 - 130Gold

Matrix Spike Dup (B6K0052-MSD1) Source: 1603809-20 Prepared: 11/3/2016 Analyzed: 11/4/2016

3660.68 25 1000.00 2782.86 87.8 0 - 256 4.14 20Aluminum

ND 1.0 125.000 ND NR 70 - 130 20Gold


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD




ND 25 NRAluminum

ND 1.0 NRGold


975.841 25 1000.00 97.6 80 - 120Aluminum

ND 1.0 50.0000 NR 80 - 120Gold


5460.00 25 1000.00 4293.55 117 0 - 256Aluminum

ND 1.0 125.000 ND NR 70 - 130Gold


4697.90 25 1000.00 4293.55 40.4 0 - 256 15.0 20Aluminum

ND 1.0 125.000 ND NR 70 - 130 20Gold


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD




ND 25 NRAluminum

ND 1.0 NRGold


1013.38 25 1000.00 101 80 - 120Aluminum

47.7451 1.0 50.0000 95.5 80 - 120Gold

Matrix Spike (B6K0189-MS1) Source: 1603809-01RE1 Prepared: 11/4/2016 Analyzed: 11/7/2016

3831.21 25 1000.00 2100.39 173 0 - 256Aluminum

112.078 1.0 125.000 ND 89.7 70 - 130Gold

Matrix Spike Dup (B6K0189-MSD1) Source: 1603809-01RE1 Prepared: 11/4/2016 Analyzed: 11/7/2016

5186.83 25 1000.00 2100.39 309 0 - 256 30.1 20 M1, RAluminum

113.814 1.0 125.000 ND 91.1 70 - 130 1.54 20Gold


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD




ND 25 NRAluminum

ND 1.0 NRGold


979.754 25 1000.00 98.0 80 - 120Aluminum

47.0168 1.0 50.0000 94.0 80 - 120Gold

Matrix Spike (B6K0190-MS1) Source: 1603809-21RE1 Prepared: 11/4/2016 Analyzed: 11/7/2016

7906.06 25 995.025 5552.70 237 0 - 256Aluminum

108.486 1.0 124.378 ND 87.2 70 - 130Gold

Matrix Spike Dup (B6K0190-MSD1) Source: 1603809-21RE1 Prepared: 11/4/2016 Analyzed: 11/7/2016

8040.59 25 1000.00 5552.70 249 0 - 256 1.69 20Aluminum

110.982 1.0 125.000 ND 88.8 70 - 130 2.27 20Gold


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Title 22 Metals by ICP-AES EPA 6010B - Quality Control

Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD




ND 2.0 NRAntimony

ND 1.0 NRArsenic

ND 1.0 NRBarium

ND 1.0 NRBeryllium

ND 1.0 NRCadmium

ND 1.0 NRChromium

ND 1.0 NRCobalt

ND 2.0 NRCopper

ND 1.0 NRLead

ND 1.0 NRMolybdenum

ND 1.0 NRNickel

ND 1.0 NRSelenium

ND 1.0 NRSilver

ND 1.0 NRThallium

ND 1.0 NRVanadium

ND 1.0 NRZinc


47.8425 2.0 50.0000 95.7 80 - 120Antimony

46.7909 1.0 50.0000 93.6 80 - 120Arsenic

50.7000 1.0 50.0000 101 80 - 120Barium

47.5825 1.0 50.0000 95.2 80 - 120Beryllium

48.2581 1.0 50.0000 96.5 80 - 120Cadmium

51.2162 1.0 50.0000 102 80 - 120Chromium

48.0602 1.0 50.0000 96.1 80 - 120Cobalt

53.7460 2.0 50.0000 107 80 - 120Copper

48.9027 1.0 50.0000 97.8 80 - 120Lead

47.7433 1.0 50.0000 95.5 80 - 120Molybdenum

49.0666 1.0 50.0000 98.1 80 - 120Nickel

44.1080 1.0 50.0000 88.2 80 - 120Selenium

49.1861 1.0 50.0000 98.4 80 - 120Silver

47.9513 1.0 50.0000 95.9 80 - 120Thallium

51.2872 1.0 50.0000 103 80 - 120Vanadium

47.4556 1.0 50.0000 94.9 80 - 120Zinc


95.6192 2.0 125.000 ND 76.5 34 - 103Antimony

109.467 1.0 125.000 10.6924 79.0 59 - 103Arsenic

131.626 1.0 125.000 31.0318 80.5 30 - 134Barium

100.382 1.0 125.000 0.110644 80.2 62 - 105Beryllium

98.7736 1.0 125.000 ND 79.0 53 - 102Cadmium

118.542 1.0 125.000 14.6289 83.1 51 - 111Chromium


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD


Title 22 Metals by ICP-AES EPA 6010B - Quality Control (cont'd)

Batch B6K0052 - EPA 3050B_S (continued)

Matrix Spike (B6K0052-MS1) - Continued Source: 1603809-20 Prepared: 11/3/2016 Analyzed: 11/4/2016

102.371 1.0 125.000 4.37106 78.4 55 - 105Cobalt

116.242 2.0 125.000 7.27050 87.2 53 - 126Copper

103.763 1.0 125.000 2.23482 81.2 34 - 129Lead

99.9428 1.0 125.000 0.210504 79.8 57 - 105Molybdenum

116.381 1.0 125.000 14.6044 81.4 49 - 109Nickel

92.1664 1.0 125.000 ND 73.7 57 - 99Selenium

102.093 1.0 125.000 ND 81.7 64 - 105Silver

97.5052 1.0 125.000 ND 78.0 46 - 105Thallium

115.995 1.0 125.000 11.2907 83.8 60 - 109Vanadium

112.364 1.0 125.000 13.7950 78.9 29 - 122Zinc


99.3000 2.0 125.000 ND 79.4 34 - 103 3.78 20Antimony

114.460 1.0 125.000 10.6924 83.0 59 - 103 4.46 20Arsenic

136.962 1.0 125.000 31.0318 84.7 30 - 134 3.97 20Barium

107.461 1.0 125.000 0.110644 85.9 62 - 105 6.81 20Beryllium

100.654 1.0 125.000 ND 80.5 53 - 102 1.89 20Cadmium

121.341 1.0 125.000 14.6289 85.4 51 - 111 2.33 20Chromium

104.820 1.0 125.000 4.37106 80.4 55 - 105 2.36 20Cobalt

119.877 2.0 125.000 7.27050 90.1 53 - 126 3.08 20Copper

108.608 1.0 125.000 2.23482 85.1 34 - 129 4.56 20Lead

102.499 1.0 125.000 0.210504 81.8 57 - 105 2.53 20Molybdenum

119.248 1.0 125.000 14.6044 83.7 49 - 109 2.43 20Nickel

96.2898 1.0 125.000 ND 77.0 57 - 99 4.38 20Selenium

104.861 1.0 125.000 ND 83.9 64 - 105 2.68 20Silver

102.455 1.0 125.000 ND 82.0 46 - 105 4.95 20Thallium

119.878 1.0 125.000 11.2907 86.9 60 - 109 3.29 20Vanadium

116.054 1.0 125.000 13.7950 81.8 29 - 122 3.23 20Zinc


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Reported : 11/09/2016



Title 22 Metals by ICP-AES EPA 6010B - Quality Control

Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD




ND 2.0 NRAntimony

ND 1.0 NRArsenic

ND 1.0 NRBarium

ND 1.0 NRBeryllium

ND 1.0 NRCadmium

ND 1.0 NRChromium

ND 1.0 NRCobalt

ND 2.0 NRCopper

ND 1.0 NRLead

ND 1.0 NRMolybdenum

ND 1.0 NRNickel

ND 1.0 NRSelenium

ND 1.0 NRSilver

ND 1.0 NRThallium

ND 1.0 NRVanadium

ND 1.0 NRZinc


47.9235 2.0 50.0000 95.8 80 - 120Antimony

46.3392 1.0 50.0000 92.7 80 - 120Arsenic

49.1313 1.0 50.0000 98.3 80 - 120Barium

47.5015 1.0 50.0000 95.0 80 - 120Beryllium

46.8633 1.0 50.0000 93.7 80 - 120Cadmium

49.7881 1.0 50.0000 99.6 80 - 120Chromium

46.6072 1.0 50.0000 93.2 80 - 120Cobalt

52.4181 2.0 50.0000 105 80 - 120Copper

48.4176 1.0 50.0000 96.8 80 - 120Lead

46.4883 1.0 50.0000 93.0 80 - 120Molybdenum

47.6429 1.0 50.0000 95.3 80 - 120Nickel

43.7537 1.0 50.0000 87.5 80 - 120Selenium

47.8066 1.0 50.0000 95.6 80 - 120Silver

47.6478 1.0 50.0000 95.3 80 - 120Thallium

50.0615 1.0 50.0000 100 80 - 120Vanadium

46.1057 1.0 50.0000 92.2 80 - 120Zinc


89.1776 2.0 125.000 ND 71.3 34 - 103Antimony

97.5631 1.0 125.000 3.89293 74.9 59 - 103Arsenic

133.687 1.0 125.000 37.5711 76.9 30 - 134Barium

97.5628 1.0 125.000 0.175241 77.9 62 - 105Beryllium

93.8258 1.0 125.000 ND 75.1 53 - 102Cadmium

130.356 1.0 125.000 32.7148 78.1 51 - 111Chromium


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD


Title 22 Metals by ICP-AES EPA 6010B - Quality Control (cont'd)

Batch B6K0053 - EPA 3050B_S (continued)

Matrix Spike (B6K0053-MS1) - Continued Source: 1603809-21 Prepared: 11/3/2016 Analyzed: 11/4/2016

100.390 1.0 125.000 6.66464 75.0 55 - 105Cobalt

117.620 2.0 125.000 12.4690 84.1 53 - 126Copper

100.356 1.0 125.000 3.05628 77.8 34 - 129Lead

95.2298 1.0 125.000 ND 76.2 57 - 105Molybdenum

132.156 1.0 125.000 36.0349 76.9 49 - 109Nickel

87.1642 1.0 125.000 ND 69.7 57 - 99Selenium

99.2638 1.0 125.000 ND 79.4 64 - 105Silver

94.0576 1.0 125.000 ND 75.2 46 - 105Thallium

117.202 1.0 125.000 17.9598 79.4 60 - 109Vanadium

109.418 1.0 125.000 15.3891 75.2 29 - 122Zinc


81.8654 2.0 125.000 ND 65.5 34 - 103 8.55 20Antimony

90.0100 1.0 125.000 3.89293 68.9 59 - 103 8.05 20Arsenic

119.315 1.0 125.000 37.5711 65.4 30 - 134 11.4 20Barium

91.1534 1.0 125.000 0.175241 72.8 62 - 105 6.79 20Beryllium

84.7698 1.0 125.000 ND 67.8 53 - 102 10.1 20Cadmium

117.687 1.0 125.000 32.7148 68.0 51 - 111 10.2 20Chromium

90.1378 1.0 125.000 6.66464 66.8 55 - 105 10.8 20Cobalt

106.519 2.0 125.000 12.4690 75.2 53 - 126 9.90 20Copper

91.9132 1.0 125.000 3.05628 71.1 34 - 129 8.78 20Lead

85.9556 1.0 125.000 ND 68.8 57 - 105 10.2 20Molybdenum

118.516 1.0 125.000 36.0349 66.0 49 - 109 10.9 20Nickel

80.6850 1.0 125.000 ND 64.5 57 - 99 7.72 20Selenium

89.7838 1.0 125.000 ND 71.8 64 - 105 10.0 20Silver

86.2263 1.0 125.000 ND 69.0 46 - 105 8.69 20Thallium

105.699 1.0 125.000 17.9598 70.2 60 - 109 10.3 20Vanadium

98.5192 1.0 125.000 15.3891 66.5 29 - 122 10.5 20Zinc


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Reported : 11/09/2016



Mercury by AA (Cold Vapor) EPA 7471A - Quality Control

Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD


Batch B6K0131 - EPA 7471_S


ND 0.10 NRMercury


0.854518 0.10 0.833333 103 80 - 120Mercury


1.00424 0.10 0.833333 0.030926 117 70 - 130Mercury


1.00655 0.10 0.833333 0.030926 117 70 - 130 0.230 20Mercury

Post Spike (B6K0131-PS1) Source: 1603784-01 Prepared: 11/3/2016 Analyzed: 11/4/2016

0.006743 5.00000E-3 0.000371 127 85 - 115 M1Mercury


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Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD


Batch B6K0132 - EPA 7471_S


ND 0.10 NRMercury


0.877618 0.10 0.833333 105 80 - 120Mercury


0.038082 0.10 0.034353 NR 10.3 20Mercury


1.00048 0.10 0.833333 0.034353 116 70 - 130Mercury


1.10256 0.10 0.833333 0.034353 128 70 - 130 9.71 20Mercury

Post Spike (B6K0132-PS1) Source: 1603807-06 Prepared: 11/4/2016 Analyzed: 11/4/2016

0.006771 5.00000E-3 0.000412 127 85 - 115 M1Mercury


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Notes and Definitions

R RPD value outside acceptance criteria. Calculation is based on raw values.

M1 Matrix spike recovery outside of acceptance limit. The analytical batch was validated by the laboratory control sample.

E Result value is above quantitation range and therefore, estimated.

ND Analyte is not detected at or above the Practical Quantitation Limit (PQL). When client requests quantitation against MDL,

analyte is not detected at or above the Method Detection Limit (MDL)

PQL Practical Quantitation Limit

MDL Method Detection Limit

RPD Relative Percent Difference

Not ReportedNR

CA2 CA-ELAP (CDPH)

OR-NELAP (OSPHL)OR1

TX1 TX-NELAP (TCEQ)

Notes:

(1) The reported MDL and PQL are based on prep ratio variation and analytical dilution.

(2) The suffix [2C] of specific analytes signifies that the reported result is taken from the instrument's second column.

(3) Results are wet unless otherwise specified.


4 o

f 66

5 o

f 66

6 o

f 66

October 30, 2017

792 Searls Avenue

Nevada City, CA 95959

Bryan Botsford

Tel: (530) 478-1305

Fax:(530) 478-1019

Holdrege & Kull Consulting Engineers & GeologistsELAP No.: 1838

CSDLAC No.: 10196

ORELAP No.: CA300003

Re: ATL Work Order Number :

Client Reference :

1703784

Enclosed are the results for sample(s) received on October 23, 2017 by Advanced Technology

Laboratories. The sample(s) are tested for the parameters as indicated on the enclosed chain of

custody in accordance with applicable laboratory certifications. The laboratory results contained

in this report specifically pertains to the sample(s) submitted.

Thank you for the opportunity to serve the needs of your company. If you have any questions,

please feel free to contact me or your Project Manager.

Sincerely,

Laboratory Director

COMBIE, 4688-01

Eddie Rodriguez

3275 Walnut Avenue, Signal Hill, CA 90755 � Tel: 562-989-4045 � Fax: 562-989-4040

www.atlglobal.com

The cover letter and the case narrative are an integral part of this analytical report and its absence renders the report invalid.

Test results contained within this data package meet the requirements of applicable state-specific certification programs. The

report cannot be reproduced without written permission from the client and Advanced Technology Laboratories .

Page 1 of 11

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Bryan Botsford

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Sample ID Laboratory ID Matrix Date Sampled Date Received

SUMMARY OF SAMPLES

C-15 1703784-01 Soil 10/17/17 13:00 10/23/17 14:22

C-16 1703784-02 Soil 10/17/17 13:30 10/23/17 14:22

C-17 1703784-03 Soil 10/17/17 14:00 10/23/17 14:22

C-18 1703784-04 Soil 10/17/17 14:30 10/23/17 14:22

C-19 1703784-05 Soil 10/17/17 15:00 10/23/17 14:22


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Lab ID: 1703784-01

Client Sample ID C-15

Notes

Date/Time


Percent Moisture Analyst: DT

Result


PQL

1 B7J0727 10/24/2017 10/25/17 08:460.1027Percent Moisture

Notes

Date/Time


Mercury by AA (Cold Vapor) EPA 7471A Analyst: KEK

Result

(mg/kg)(mg/kg)

PQL

1 B7J0783 10/26/2017 10/26/17 16:520.100.42Mercury


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Bryan Botsford

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Lab ID: 1703784-02


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B7J0783 10/26/2017 10/26/17 16:590.100.63Mercury


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Project Number :

Report To :

COMBIE, 4688-01

Bryan Botsford

Reported : 10/30/2017



Lab ID: 1703784-03


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B7J0783 10/26/2017 10/26/17 17:010.100.47Mercury


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Bryan Botsford

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Lab ID: 1703784-04


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B7J0783 10/26/2017 10/26/17 17:070.100.48Mercury


792 Searls Avenue


Project Number :

Report To :

COMBIE, 4688-01

Bryan Botsford

Reported : 10/30/2017



Lab ID: 1703784-05


Notes

Date/Time



Result


PQL


Notes

Date/Time



Result

(mg/kg)(mg/kg)

PQL

1 B7J0783 10/26/2017 10/26/17 17:090.100.38Mercury


792 Searls Avenue


Project Number :

Report To :

COMBIE, 4688-01

Bryan Botsford

Reported : 10/30/2017



QUALITY CONTROL SECTION


Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD

Limit(% by Weight)(% by Weight) Notes

MDL

(% by Weight)

Batch B7J0727 - No_Prep_WC1_S

Duplicate (B7J0727-DUP1) Source: 1703787-10 Prepared: 10/24/2017 Analyzed: 10/25/2017

19.3311 0.10 18.9239 2.13 30Percent Moisture 0.10


792 Searls Avenue


Project Number :

Report To :

COMBIE, 4688-01

Bryan Botsford

Reported : 10/30/2017




Analyte

Result PQL Spike

Level

Source

Result % Rec

% Rec

Limits RPD

RPD


MDL

(mg/kg)

Batch B7J0783 - EPA 7471_S

Blank (B7J0783-BLK1) Prepared: 10/26/2017 Analyzed: 10/26/2017

ND 0.10Mercury 0.005

LCS (B7J0783-BS1) Prepared: 10/26/2017 Analyzed: 10/26/2017

0.968695 0.10 0.833333 116 80 - 120Mercury 0.005

Matrix Spike (B7J0783-MS1) Source: 1703784-01 Prepared: 10/26/2017 Analyzed: 10/26/2017

1.43659 0.10 0.833333 0.420055 122 70 - 130Mercury 0.005

Matrix Spike Dup (B7J0783-MSD1) Source: 1703784-01 Prepared: 10/26/2017 Analyzed: 10/26/2017

1.52767 0.10 0.833333 0.420055 133 70 - 130 6.15 20 M1Mercury 0.005

Post Spike (B7J0783-PS1) Source: 1703784-01 Prepared: 10/26/2017 Analyzed: 10/26/2017

0.012484 5.00000E-3 0.005041 149 85 - 115 M1Mercury


792 Searls Avenue


Project Number :

Report To :

COMBIE, 4688-01

Bryan Botsford

Reported : 10/30/2017



Notes and Definitions

M1 Matrix spike recovery outside of acceptance limit. The analytical batch was validated by the laboratory control sample.

ND Analyte is not detected at or above the Practical Quantitation Limit (PQL). When client requests quantitation against MDL,

analyte is not detected at or above the Method Detection Limit (MDL)

PQL Practical Quantitation Limit

MDL Method Detection Limit

RPD Relative Percent Difference

Not ReportedNR

CA2 CA-ELAP (CDPH)

OR-NELAP (OSPHL)OR1

Notes:

(1) The reported MDL and PQL are based on prep ratio variation and analytical dilution.

(2) The suffix [2C] of specific analytes signifies that the reported result is taken from the instrument's second column.

(3) Results are wet unless otherwise specified.


1 o

f 11

APPENDIX B Lithologic Logs

Sheet:

Depth (ft)Soil and/or Rock Descriptions

(USCS Symbol; USCS Name; Field Estimated Particle Size Gradation (%); Munsel Color; Density/Consistency; Moisture; Fill Material; Dilatancy; Plasticity Toughness; Dry Strength; Structure; Cementation; Organics; Odor; Other)

Project No.: Task:

Ground Elev. (Ft. MSL):

Boring No.

Drill Rig Type:

Grap

hic L

og

Ground Water InformationDateTime

EXPLORATORY BORING LOG

NOTES:

Project Name:

Location:

Total Depth (Ft.):Boring Dia. (In.):

Driller:

Logged By:

Backfill or Well Casing:

Hammer Type:Drilling Method:

Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

TC-1

1

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1596.8

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1320 (ML) CLAYEY SILT, 7.5YR (4/6) STRONG BROWN, SOFT, SATURATEDD.P.

GRADES TO (SM) SILTY SAND, GLEY 1 (5/5) GREY, SOFT, SATURATED

C-1-11335

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-12

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1596.8

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P. (SM) SILTY SAND, GLEY 1 (5/5) GREY, SOFT, SATURATED

C-1-21400

NATIVE MATERIAL ENCOUNTERED AT 22 FEET BGS, (ML) SANDY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED.

BORING TERMINATED AT 30 FEET BGS

1415

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-21

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-2-11430

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-22

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40


C-2-21440

NATIVE MATERIAL ENCOUNTERED AT 32 FEET BGS, (ML) CLAYEY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED. WEATHERED ROCK STRUCTURE INCREASES WITH DEPTH.


1450

GRADES TO (ML) LOW PLASTICITY SILT, 5Y (3/2) DARK OLIVE GREY,SOFT, SATURATED

GRADES TO METAVOLCANIC ROCK (LAKE COMBIE COMPLEX), HIGHLYWEATHERED, FRACTURED.

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-31

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-3-11500

C-3-21520

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-32

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40


NATIVE MATERIAL ENCOUNTERED AT 21 FEET BGS, (SM) SANDY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED.


1530

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-41

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-4-11618

GRADES TO (SM) SILTY SAND, 7.5YR (4/6) STRONG BROWN, SOFT,SATURATED

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-42

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

NATIVE MATERIAL ENCOUNTERED AT 28 FEET BGS, (ML) CLAYEY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED.


C-4-21625

1635

(SM) SILTY SAND, 7.5YR (4/6) STRONG BROWN, SOFT, SATURATED

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-51

201.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597

4688-01

10/19/16

GEOPROBE 7730

GH62

10/19/16

1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-5-11650



C-5-11700

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-61

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1598.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1030 (SM) SILTY SAND, 10YR (4/6) DARK YELLOWISH BROWN, SOFT, SATURATEDD.P.

GRADES TO (SP) POORLY GRADED SAND, GLEY 1 (5/5) GREY, SOFT,SATURATED

C-6-11045

D.P.


1050

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-62

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1598.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

1055

NATIVE MATERIAL ENCOUNTERED AT 29 FEET BGS, (SM) SANDY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED.

(SP) POORLY GRADED SAND, GLEY 1 (5/5) GREY, SOFT, SATURATED

C-6-2


GRADES TO (SM) SILTY SAND 10YR (4/6) DARK YELLOWISH BROWN,SOFT, SATURATED

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-71

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1600.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-7-11150

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-72

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1600.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.



C-7-21155


1200

HIGHER SILT CONTENT AT 30 FEET BGS

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-81

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1600.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-8-11200

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-82

351.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1600.5

4688-01

10/20/16

GEOPROBE 7730

GH62

10/20/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.



C-8-21215


1225

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-91

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.8

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-9-11330

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-92

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.8

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

BORING TERMINATED AT 25 FEET BGS. NATIVE MATERIAL NOTENCOUNTERED.

C-9-21345 (SP) POORLY GRADED SAND, GLEY 1 (5/5) GREY, SOFT, SATURATED

1350

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-101

371.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1598.0

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-10-11010

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-102

371.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1598.0

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


C-10-21020



1025

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-111

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1599.5

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-11-11100

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-112

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1599.5

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


C-11-21110



1115

(SM) SILTY SAND, 10YR (4/6) DARK YELLOWISH BROWN, SOFT, SATURATED

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-121

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-12-11215

GRADES TO (SM) SILTY SAND, 10YR (4/6) DARK YELLOWISH BROWN,SOFT, SATURATE


Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-122

301.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1597.5

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


C-12-21230


NATIVE MATERIAL ENCOUNTERED AT 28 FEET BGS, (ML) SANDY SILTWITH MINOR GRAVEL, 10YR (3/4) DARK YELLOWISH BROWN, SOFT,SATURATED.

1235

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

T

C-131

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1599.4

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-13-11350

Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

TC-13

2

251.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1599.4

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


C-13-21230


Sheet:



Project No.: Task:


Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name:

Location:


Driller:

Logged By:



Drilling Company:

Start:

Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

PHONE: 530-478-1305, FAX: 530-478-1019SP

TC-14

1

201.25 NA

NATIONAL EWP

DIRECT PUSHR. CANO

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1601.1

4688-01

10/24/16

GEOPROBE 7730

GH62

10/24/16

1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



C-14-1



1415

C-14-2

GRADES TO (SM) SILTY SAND, 10YR (4/6) DARK YELLOWISH BROWN, SOFT,SATURATED

1430

Sheet:



Project No.: Task: Ground Elev. (Ft. MSL):

Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:

Project Name: Location:

Total Depth (Ft.):Boring Dia. (In.):Driller:

Logged By:

Backfill or Well Casing:Hammer Type:Drilling Method:

Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-151

361.25 NA

CASCADE

DIRECT PUSHJ. MORALES

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1596.4

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

0940 (ML) CLAYEY SILT, 7.5YR (3/1) VERY DARK GREY, SOFT, SATURATEDD.P.

GRADES TO (SM) SILTY SAND, 7.5YR (5/1) GRAY, LOOSE, SATURATED

GRADES TO (SP) POORLY GRADED FINE SAND WITH MINOR SILT, 7.5YR(5/1) GRAY, LOOSE, SATURATED

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-152

361.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1596.4

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

GRADES TO (SM) SILTY SAND, 7.5YR (5/1) GRAY, LOOSE, SATURATED


1115NATIVE MATERIAL ENCOUNTERED AT 35 FEET BGS, (ML) CLAYEY SILT WITHGRAVEL TO 3/4" IN DIAMETER, 5YR (3/4) DARK REDDISH BROWN, SOFT,SATURATED

(SP) POORLY GRADED FINE SAND WITH MINOR SILT, 7.5YR (5/1) GRAY,LOOSE, SATURATED

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-161

381.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1593.6

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

0800 (ML) CLAYEY SILT, 7.5YR (3/1) VERY DARK GRAY, SOFT, SATURATEDD.P.

GRADES TO (SM) SILTY SAND, 7.5YR (3/1) GRAY, SOFT, SATURATED

GRADES TO (SP) POORLY GRADED FINE SAND, 7.5YR (5/1) GRAY, LOOSE,SATURATED.

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-162

381.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1593.6

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


0930

NATIVE MATERIAL ENCOUNTERED AT 34 FEET BGS, (ML) CLAYEY SILT WITHGRAVEL TO 3/4" IN DIAMETER, 5YR (3/4) DARK REDDISH BROWN, SOFT,SATURATED

(SM) SILTY SAND, 7.5YR (3/1) GRAY, SOFT, SATURATED

(SP) POORLY GRADED FINE SAND WITH MINOR SILT, 7.5YR (5/1) GRAY,LOOSE, SATURATED

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-171

381.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1594.1

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1400 (ML) CLAYEY SILT, 7.5YR (3/4) DARK BROWN, SOFT, SATURATEDD.P.



GRADES TO (SP) POORLY GRADED FINE SAND, 7.5YR (5/1) GRAY, LOOSE,SATURATED

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-172

381.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1594.1

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

GRADES TO (SW) WELL GRADED SAND WITH COARSE GRAVEL UP TO 0.5INCHES IN DIAMETER, 7.5YR (5/2) BROWN, LOOSE, SATURATED.

BORING TERMINATED AT 38 FEET BGS ON REFUSAL

1500


GRADES TO (SM) SILTY SAND, 7.5YR (3/1) GRAY, SOFT, SATURATED


Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-181

271.25 NA

CASCADE

DIRECT PUSHJUAN MORALES

B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.9

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20



Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-182

271.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.9

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

NATIVE MATERIAL ENCOUNTERED AT 26 FEET BGS, (ML) CLAYEY SILT,5YR (3/4) DARK REDDISH BROWN, SOFT, SATURATED.


1330

GRADES TO (SM) SILTY SAND, 7.5YR (5/2) BROWN, LOOSE, SATURATED.

(SP) POORLY GRADED FINE SAND, 7.5YR (5/1) GRAY, LOOSE,SATURATED.

GRADES TO (ML) CLAYEY SILT, 7.5YR (3/4) VERY DARK BROWN, SOFT,SATURATED.

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-191

421.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.9

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

3

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1005 (ML) CLAYEY SILT, 7.5YR (3/4) DARK BROWN, SOFT, SATURATEDD.P.




Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-192

421.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.9

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

3

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.

GRADES TO (CL) LOW PLASTICITY CLAY, 7.5YR (4/1) DARK GREY, SOFT,SATURATED.

GRADES TO (SW) WELL GRADED SAND WITH COARSE GRAVEL UP TO 1INCH IN DIAMETER, 7.5YR (5/2) BROWN, LOOSE, SATURATED.

(SP) POORLY GRADED FINE SAND, 7.5YR (5/1) GRAY, LOOSE,SATURATED.

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-193

421.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.9

4688-01

10/11/17

GEOPROBE 7730 DT

GH62

10/11/17

3

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

D.P. (SW) WELL GRADED SAND WITH COARSE GRAVEL UP TO 1 INCH INDIAMETER, 7.5YR (5/2) BROWN, LOOSE, SATURATED.

BORING TERMINATED AT 42 FEET BGS ON REFUSAL

1130

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-201

241.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1592

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

(ML) CLAYEY SILT, 7.5YR (3/1) VERY DARK GREY, SOFT, SATURATEDD.P.1400

GRADES TO (MP) HIGH PLASTICITY CLAYEY SILT, 5YR (3/4) DARK REDDISHBROWN, DENSE, SATURATED.


Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-202

241.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1592

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

2

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

D.P.


NATIVE MATERIAL ENCOUNTERED AT 22 FEET BGS, (ML) CLAYEY SILTWITH GRAVEL UP TO 0.5" IN DIAMETER, 5YR (3/4) DARK REDDISH BROWN,SOFT, SATURATED.

(MP) HIGH PLASTICITY CLAYEY SILT, 5YR (3/4) DARK REDDISH BROWN,DENSE, SATURATED.

1530

Sheet:




Boring No.

Drill Rig Type:

Grap

hic L

og



NOTES:



Logged By:


Drilling Company:

Start:Finish:

And

Sym

bol

Sam

ple I

nter

val

Sam

pler

Typ

ean

d/or

Drilli

ng M

etho

d

(Ft./

Ft.)

(ppm

)PI

D Me

ter R

eadi

ng

Blow

Cou

nts

Sam

ple R

ecov

ery

(Blo

ws / 6

-inch

)

(H:M

)Ti

me

(Ft.)

Dept

h B.

G.S.

Sam

ple N

o.

Deta

ilW

ell C

onst

ruct

ion

of

SPT

C-211

101.25 NA

CASCADE


B. BOTSFORD

MEADOW VISTA, CA

COMBIE RESERVOIR

1591.5

4688-01

10/12/17

GEOPROBE 7730 DT

GH62

10/12/17

1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

(ML) CLAYEY SILT, 7.5YR (3/1) VERY DARK GRAY, SOFT, SATURATEDD.P.1210


1240

NATIVE MATERIAL ENCOUNTERED AT 5 FEET BGS, (ML) CLAYEY SILT,5YR (3/4) DARK REDDISH BROWN, SOFT, SATURATED.

APPENDIX C Geotechnical Laboratory Reports

Particle Size DistributionASTM D422

Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-1-COMP Boring/Trench: C-1 Depth, (ft.): 0-22 Tested By: SJS/MLHDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590

Particle Diameter Dry Weight on Sieve PercentInches Millimeter Retained Accumulated Passing Passing

On Sieve On Sieve Sieve(in.) (mm) (gm) (gm) (gm) (%)

6.0000 152.4 0.00 0.0 1,900.3 100.03.0000 76.2 0.00 0.0 1,900.3 100.02.0000 50.8 0.00 0.0 1,900.3 100.01.5000 38.1 0.00 0.0 1,900.3 100.01.0000 25.4 0.00 0.0 1,900.3 100.00.7500 19.1 0.00 0.0 1,900.3 100.00.5000 12.7 0.00 0.0 1,900.3 100.00.3750 9.5 0.00 0.0 1,900.3 100.00.1870 4.7500 0.00 0.0 1,900.3 100.00.0787 2.0000 4.24 4.2 1,896.1 99.80.0335 0.8500 12.72 17.0 1,883.3 99.10.0167 0.4250 107.44 124.4 1,775.9 93.50.0098 0.2500 233.74 358.1 1,542.2 81.20.0059 0.1500 370.40 728.5 1,171.8 61.70.0030 0.0750 309.61 1,038.1 862.2 45.4

HOLDREGE & KULL(530) 478-1305 - Fax (530) 478-1019 - 792 Searls Ave.- Nevada City, CA 95959 - A California Corporation

#20#40#60#100#200

Hydr

omet

er1.0 Inch3/4 Inch1/2 Inch3/8 Inch

#4#10

Sieve Size

(U.S. Standard)6 Inch3 Inch2 Inch

1.5 Inch

Combie Reservoir

Silty sand, brown (7.5YR 4/2)

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)

C-1-COMP Particle Size Gradation

ClaySiltFineMediumSand

Fine CobbleBoulders Coarse Gravel Coarse

4688-01 Lab 15-16-590.xlsSieve


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-2-COMP Boring/Trench: C-2 Depth, (ft.): 0-32 Tested By: SJS/CAMMDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 343.9 100.03.0000 76.2 0.00 0.0 343.9 100.02.0000 50.8 0.00 0.0 343.9 100.01.5000 38.1 0.00 0.0 343.9 100.01.0000 25.4 0.00 0.0 343.9 100.00.7500 19.1 0.00 0.0 343.9 100.00.5000 12.7 0.00 0.0 343.9 100.00.3750 9.5 0.00 0.0 343.9 100.00.1870 4.7500 0.00 0.0 343.9 100.00.0787 2.0000 27.25 27.2 316.7 92.10.0335 0.8500 1.46 28.7 315.2 91.70.0167 0.4250 13.10 41.8 302.1 87.80.0098 0.2500 27.25 69.1 274.9 79.90.0059 0.1500 30.29 99.3 244.6 71.10.0030 0.0750 42.07 141.4 202.5 58.9

Combie Reservoir

Sandy silt, dark grayish brown (10YR 4/2)

Sieve Size


1.5 Inch1.0 Inch3/4 Inch1/2 Inch3/8 Inch

#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (2)





6.0000 152.4 0.00 0.0 4,295.7 100.03.0000 76.2 0.00 0.0 4,295.7 100.02.0000 50.8 0.00 0.0 4,295.7 100.01.5000 38.1 0.00 0.0 4,295.7 100.01.0000 25.4 0.00 0.0 4,295.7 100.00.7500 19.1 0.00 0.0 4,295.7 100.00.5000 12.7 0.00 0.0 4,295.7 100.00.3750 9.5 0.00 0.0 4,295.7 100.00.1870 4.7500 2.46 2.5 4,293.2 99.90.0787 2.0000 0.00 2.5 4,293.2 99.90.0335 0.8500 20.95 23.4 4,272.2 99.50.0167 0.4250 286.69 310.1 3,985.5 92.80.0098 0.2500 676.25 986.4 3,309.3 77.00.0059 0.1500 732.44 1,718.8 2,576.9 60.00.0030 0.0750 813.40 2,532.2 1,763.5 41.1

Combie Reservoir

Silty sand, dark grayish brown (10YR 4/2)

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (3)





6.0000 152.4 0.00 0.0 197.6 100.03.0000 76.2 0.00 0.0 197.6 100.02.0000 50.8 0.00 0.0 197.6 100.01.5000 38.1 0.00 0.0 197.6 100.01.0000 25.4 0.00 0.0 197.6 100.00.7500 19.1 0.00 0.0 197.6 100.00.5000 12.7 0.00 0.0 197.6 100.00.3750 9.5 0.00 0.0 197.6 100.00.1870 4.7500 0.00 0.0 197.6 100.00.0787 2.0000 0.00 0.0 197.6 100.00.0335 0.8500 0.00 0.0 197.6 100.00.0167 0.4250 3.00 3.0 194.6 98.50.0098 0.2500 20.50 23.5 174.1 88.10.0059 0.1500 111.30 134.8 62.8 31.80.0030 0.0750 45.10 179.9 17.7 9.0

Cc = 1.74

Cu = 2.45

Combie Reservoir

Poorly graded sand with silt, dark grayish brown (10YR 4/2)

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (4)





6.0000 152.4 0.00 0.0 365.1 100.03.0000 76.2 0.00 0.0 365.1 100.02.0000 50.8 0.00 0.0 365.1 100.01.5000 38.1 0.00 0.0 365.1 100.01.0000 25.4 0.00 0.0 365.1 100.00.7500 19.1 0.00 0.0 365.1 100.00.5000 12.7 0.00 0.0 365.1 100.00.3750 9.5 7.21 7.2 357.9 98.00.1870 4.7500 0.00 7.2 357.9 98.00.0787 2.0000 6.36 13.6 351.6 96.30.0335 0.8500 3.84 17.4 347.7 95.20.0167 0.4250 7.42 24.8 340.3 93.20.0098 0.2500 28.23 53.1 312.1 85.50.0059 0.1500 49.70 102.8 262.4 71.90.0030 0.0750 57.12 159.9 205.3 56.2

Combie Reservoir

Sandy silt, , dark grayish brown (10YR 4/2)

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (5)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-6-COMP Boring/Trench: C-6 Depth, (ft.): 0-29 Tested By: SJSDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 5,661.1 100.03.0000 76.2 0.00 0.0 5,661.1 100.02.0000 50.8 0.00 0.0 5,661.1 100.01.5000 38.1 0.00 0.0 5,661.1 100.01.0000 25.4 0.00 0.0 5,661.1 100.00.7500 19.1 24.84 24.8 5,636.3 99.60.5000 12.7 8.81 33.7 5,627.4 99.40.3750 9.5 7.03 40.7 5,620.4 99.30.1870 4.7500 7.86 48.5 5,612.6 99.10.0787 2.0000 7.85 56.4 5,604.7 99.00.0335 0.8500 23.54 79.9 5,581.2 98.60.0167 0.4250 355.66 435.6 5,225.5 92.30.0098 0.2500 1,148.06 1,583.7 4,077.4 72.00.0059 0.1500 1,280.13 2,863.8 2,797.3 49.40.0030 0.0750 856.47 3,720.3 1,940.8 34.3

Combie Reservoir

Silty sand, , dark grayish brown (10YR 4/2)

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (6)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-7-COMP Boring/Trench: C-7 Depth, (ft.): 0-32 Tested By: SJSDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 3,816.4 100.03.0000 76.2 0.00 0.0 3,816.4 100.02.0000 50.8 0.00 0.0 3,816.4 100.01.5000 38.1 0.00 0.0 3,816.4 100.01.0000 25.4 0.00 0.0 3,816.4 100.00.7500 19.1 0.00 0.0 3,816.4 100.00.5000 12.7 0.00 0.0 3,816.4 100.00.3750 9.5 0.00 0.0 3,816.4 100.00.1870 4.7500 0.00 0.0 3,816.4 100.00.0787 2.0000 0.00 0.0 3,816.4 100.00.0335 0.8500 16.34 16.3 3,800.0 99.60.0167 0.4250 275.66 292.0 3,524.4 92.30.0098 0.2500 693.23 985.2 2,831.1 74.20.0059 0.1500 796.35 1,781.6 2,034.8 53.30.0030 0.0750 645.25 2,426.8 1,389.5 36.4

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (7)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-8-COMP Boring/Trench: C-8 Depth, (ft.): 0-28 Tested By: MLH/CAMMDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 2,765.8 100.03.0000 76.2 0.00 0.0 2,765.8 100.02.0000 50.8 0.00 0.0 2,765.8 100.01.5000 38.1 0.00 0.0 2,765.8 100.01.0000 25.4 0.00 0.0 2,765.8 100.00.7500 19.1 0.00 0.0 2,765.8 100.00.5000 12.7 0.00 0.0 2,765.8 100.00.3750 9.5 9.12 9.1 2,756.6 99.70.1870 4.7500 0.31 9.4 2,756.3 99.70.0787 2.0000 1.86 11.3 2,754.5 99.60.0335 0.8500 26.10 37.4 2,728.4 98.60.0167 0.4250 198.57 236.0 2,529.8 91.50.0098 0.2500 338.41 574.4 2,191.4 79.20.0059 0.1500 362.64 937.0 1,828.7 66.10.0030 0.0750 327.22 1,264.2 1,501.5 54.3

Combie Reservoir

Sandy silt, , dark grayish brown (10YR 4/2)

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (8)





6.0000 152.4 0.00 0.0 353.9 100.03.0000 76.2 0.00 0.0 353.9 100.02.0000 50.8 0.00 0.0 353.9 100.01.5000 38.1 0.00 0.0 353.9 100.01.0000 25.4 0.00 0.0 353.9 100.00.7500 19.1 0.00 0.0 353.9 100.00.5000 12.7 0.00 0.0 353.9 100.00.3750 9.5 4.70 4.7 349.2 98.70.1870 4.7500 0.00 4.7 349.2 98.70.0787 2.0000 0.00 4.7 349.2 98.70.0335 0.8500 2.29 7.0 346.9 98.00.0167 0.4250 17.75 24.7 329.1 93.00.0098 0.2500 42.00 66.7 287.1 81.10.0059 0.1500 61.09 127.8 226.0 63.90.0030 0.0750 65.48 193.3 160.6 45.4

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (9)





6.0000 152.4 0.00 0.0 7,293.5 100.03.0000 76.2 0.00 0.0 7,293.5 100.02.0000 50.8 0.00 0.0 7,293.5 100.01.5000 38.1 0.00 0.0 7,293.5 100.01.0000 25.4 0.00 0.0 7,293.5 100.00.7500 19.1 0.00 0.0 7,293.5 100.00.5000 12.7 0.00 0.0 7,293.5 100.00.3750 9.5 0.00 0.0 7,293.5 100.00.1870 4.7500 9.67 9.7 7,283.8 99.90.0787 2.0000 18.89 28.6 7,264.9 99.60.0335 0.8500 77.44 106.0 7,187.5 98.50.0167 0.4250 876.36 982.4 6,311.1 86.50.0098 0.2500 1,986.93 2,969.3 4,324.2 59.30.0059 0.1500 1,754.62 4,723.9 2,569.6 35.20.0030 0.0750 1,184.22 5,908.1 1,385.4 19.0

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (10)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-11-COMP Boring/Trench: C-11 Depth, (ft.): - Tested By: SJS/MLHDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 4,547.6 100.03.0000 76.2 0.00 0.0 4,547.6 100.02.0000 50.8 0.00 0.0 4,547.6 100.01.5000 38.1 0.00 0.0 4,547.6 100.01.0000 25.4 0.00 0.0 4,547.6 100.00.7500 19.1 0.00 0.0 4,547.6 100.00.5000 12.7 10.47 10.5 4,537.1 99.80.3750 9.5 3.66 14.1 4,533.5 99.70.1870 4.7500 9.90 24.0 4,523.6 99.50.0787 2.0000 9.21 33.2 4,514.4 99.30.0335 0.8500 28.95 62.2 4,485.4 98.60.0167 0.4250 447.36 509.5 4,038.1 88.80.0098 0.2500 1,105.24 1,614.8 2,932.8 64.50.0059 0.1500 973.66 2,588.4 1,959.2 43.10.0030 0.0750 640.77 3,229.2 1,318.4 29.0

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (11)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-12-COMP Boring/Trench: C-12 Depth, (ft.): - Tested By: SJSDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 4,987.8 100.03.0000 76.2 0.00 0.0 4,987.8 100.02.0000 50.8 0.00 0.0 4,987.8 100.01.5000 38.1 0.00 0.0 4,987.8 100.01.0000 25.4 0.00 0.0 4,987.8 100.00.7500 19.1 0.00 0.0 4,987.8 100.00.5000 12.7 0.00 0.0 4,987.8 100.00.3750 9.5 0.00 0.0 4,987.8 100.00.1870 4.7500 11.06 11.1 4,976.7 99.80.0787 2.0000 11.80 22.9 4,964.9 99.50.0335 0.8500 39.33 62.2 4,925.6 98.80.0167 0.4250 533.64 595.8 4,391.9 88.10.0098 0.2500 1,362.30 1,958.1 3,029.6 60.70.0059 0.1500 1,496.04 3,454.2 1,533.6 30.70.0030 0.0750 764.41 4,218.6 769.2 15.4

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (12)





6.0000 152.4 0.00 0.0 733.4 100.03.0000 76.2 0.00 0.0 733.4 100.02.0000 50.8 0.00 0.0 733.4 100.01.5000 38.1 0.00 0.0 733.4 100.01.0000 25.4 0.00 0.0 733.4 100.00.7500 19.1 0.00 0.0 733.4 100.00.5000 12.7 0.00 0.0 733.4 100.00.3750 9.5 6.68 6.7 726.7 99.10.1870 4.7500 0.00 6.7 726.7 99.10.0787 2.0000 0.26 6.9 726.5 99.10.0335 0.8500 13.32 20.3 713.1 97.20.0167 0.4250 98.35 118.6 614.8 83.80.0098 0.2500 203.36 322.0 411.4 56.10.0059 0.1500 155.98 477.9 255.5 34.80.0030 0.0750 113.72 591.7 141.7 19.3

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (13)


Project No.: 4688-01 Project Name: Date: 10/27/2016Sample No.: C-14-COMP Boring/Trench: C-14 Depth, (ft.): - Tested By: SJS/CAMMDescription: Checked By: MLHSample Location: Lab. No.: 15-16-590



6.0000 152.4 0.00 0.0 3,369.4 100.03.0000 76.2 0.00 0.0 3,369.4 100.02.0000 50.8 0.00 0.0 3,369.4 100.01.5000 38.1 0.00 0.0 3,369.4 100.01.0000 25.4 0.00 0.0 3,369.4 100.00.7500 19.1 0.00 0.0 3,369.4 100.00.5000 12.7 13.32 13.3 3,356.1 99.60.3750 9.5 3.75 17.1 3,352.3 99.50.1870 4.7500 6.80 23.9 3,345.5 99.30.0787 2.0000 4.36 28.2 3,341.1 99.20.0335 0.8500 74.10 102.3 3,267.1 97.00.0167 0.4250 515.42 617.7 2,751.6 81.70.0098 0.2500 783.48 1,401.2 1,968.2 58.40.0059 0.1500 445.68 1,846.9 1,522.5 45.20.0030 0.0750 467.47 2,314.4 1,055.0 31.3

Combie Reservoir


Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsSieve (14)


Project No.: 4688.01 Project Name: Date: 10/19/2017Sample No.: C-15 Boring/Trench: - Depth, (ft.): 0-5 Tested By: CRHDescription: Checked By: MLHSample Location: Lab. No.: 15-17-594



6.0000 152.4 0.00 0.0 1,273.3 100.03.0000 76.2 0.00 0.0 1,273.3 100.02.0000 50.8 0.00 0.0 1,273.3 100.01.5000 38.1 0.00 0.0 1,273.3 100.01.0000 25.4 0.00 0.0 1,273.3 100.00.7500 19.1 0.00 0.0 1,273.3 100.00.5000 12.7 0.00 0.0 1,273.3 100.00.3750 9.5 0.00 0.0 1,273.3 100.00.1870 4.7500 0.00 0.0 1,273.3 100.00.0787 2.0000 0.00 0.0 1,273.3 100.00.0335 0.8500 0.00 0.0 1,273.3 100.00.0167 0.4250 2.06 2.1 1,271.3 99.80.0098 0.2500 15.66 17.7 1,255.6 98.60.0059 0.1500 118.65 136.4 1,137.0 89.30.0030 0.0750 239.78 376.2 897.2 70.5


#20#40#60#100#200

Hydr

omet


#4#10

Sieve Size


1.5 Inch

Combie

Brown(10YR 4/4) Silt with Sand0

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)

Particle Size Gradation



4688-01 Lab 15-16-590.xlsC-15


Project No.: 4688.01 Project Name: Date: 10/19/2017Sample No.: C-16 Boring/Trench: - Depth, (ft.): 0-6.5 Tested By: CRHDescription: Checked By: MLHSample Location: Lab. No.: 15-17-594



6.0000 152.4 0.00 0.0 1,155.3 100.03.0000 76.2 0.00 0.0 1,155.3 100.02.0000 50.8 0.00 0.0 1,155.3 100.01.5000 38.1 0.00 0.0 1,155.3 100.01.0000 25.4 0.00 0.0 1,155.3 100.00.7500 19.1 0.00 0.0 1,155.3 100.00.5000 12.7 0.00 0.0 1,155.3 100.00.3750 9.5 0.00 0.0 1,155.3 100.00.1870 4.7500 0.00 0.0 1,155.3 100.00.0787 2.0000 0.00 0.0 1,155.3 100.00.0335 0.8500 0.00 0.0 1,155.3 100.00.0167 0.4250 2.38 2.4 1,153.0 99.80.0098 0.2500 4.08 6.5 1,148.9 99.40.0059 0.1500 23.77 30.2 1,125.1 97.40.0030 0.0750 110.04 140.3 1,015.1 87.9


#20#40#60#100#200

Hydr

omet


#4#10

Sieve Size


1.5 Inch

Combie

Dark Greyish Brown(10YR 4/2) Silt0

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsC-16


Project No.: 4688.01 Project Name: Date: 10/19/2017Sample No.: C-17 Boring/Trench: - Depth, (ft.): 0-5 Tested By: SLNDescription: Checked By: MLHSample Location: Lab. No.: 15-17-594



6.0000 152.4 0.00 0.0 1,461.9 100.03.0000 76.2 0.00 0.0 1,461.9 100.02.0000 50.8 0.00 0.0 1,461.9 100.01.5000 38.1 0.00 0.0 1,461.9 100.01.0000 25.4 0.00 0.0 1,461.9 100.00.7500 19.1 0.00 0.0 1,461.9 100.00.5000 12.7 0.00 0.0 1,461.9 100.00.3750 9.5 0.00 0.0 1,461.9 100.00.1870 4.7500 0.00 0.0 1,461.9 100.00.0787 2.0000 3.06 3.1 1,458.9 99.80.0335 0.8500 0.00 3.1 1,458.9 99.80.0167 0.4250 89.25 92.3 1,369.6 93.70.0098 0.2500 247.57 339.9 1,122.0 76.80.0059 0.1500 195.61 535.5 926.4 63.40.0030 0.0750 222.51 758.0 703.9 48.2


#20#40#60#100#200

Hydr

omet


#4#10

Sieve Size


1.5 Inch

Combie

Brown (10YR 4/3) Silty Sand0

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsC-17


Project No.: 4688.01 Project Name: Date: 10/19/2017Sample No.: C-18 Boring/Trench: - Depth, (ft.): 0-5 Tested By: SLN/CRHDescription: Checked By: MLHSample Location: Lab. No.: 15-17-594



6.0000 152.4 0.00 0.0 1,102.1 100.03.0000 76.2 0.00 0.0 1,102.1 100.02.0000 50.8 0.00 0.0 1,102.1 100.01.5000 38.1 0.00 0.0 1,102.1 100.01.0000 25.4 0.00 0.0 1,102.1 100.00.7500 19.1 0.00 0.0 1,102.1 100.00.5000 12.7 0.00 0.0 1,102.1 100.00.3750 9.5 0.00 0.0 1,102.1 100.00.1870 4.7500 0.00 0.0 1,102.1 100.00.0787 2.0000 0.00 0.0 1,102.1 100.00.0335 0.8500 0.00 0.0 1,102.1 100.00.0167 0.4250 0.00 0.0 1,102.1 100.00.0098 0.2500 0.00 0.0 1,102.1 100.00.0059 0.1500 15.18 15.2 1,086.9 98.60.0030 0.0750 113.35 128.5 973.5 88.3


#20#40#60#100#200

Hydr

omet


#4#10

Sieve Size


1.5 Inch

Combie

Light Olive Brown (2.5Y 5/6) Silt 0

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsC-18


Project No.: 4688.01 Project Name: Date: 10/19/2017Sample No.: C-19 Boring/Trench: - Depth, (ft.): 0-5 Tested By: CRHDescription: Checked By: MLHSample Location: Lab. No.: 15-17-594



6.0000 152.4 0.00 0.0 1,356.8 100.03.0000 76.2 0.00 0.0 1,356.8 100.02.0000 50.8 0.00 0.0 1,356.8 100.01.5000 38.1 0.00 0.0 1,356.8 100.01.0000 25.4 0.00 0.0 1,356.8 100.00.7500 19.1 0.00 0.0 1,356.8 100.00.5000 12.7 0.00 0.0 1,356.8 100.00.3750 9.5 0.00 0.0 1,356.8 100.00.1870 4.7500 0.00 0.0 1,356.8 100.00.0787 2.0000 0.00 0.0 1,356.8 100.00.0335 0.8500 0.00 0.0 1,356.8 100.00.0167 0.4250 71.34 71.3 1,285.5 94.70.0098 0.2500 208.66 280.0 1,076.8 79.40.0059 0.1500 172.10 452.1 904.7 66.70.0030 0.0750 207.77 659.9 696.9 51.4

Combie

Brown (10YR 4/4) Sandy Silt0

Sieve Size



#4#10


#20#40#60#100#200

Hydr

omet

er

0.010.020.030.040.050.060.070.080.090.0

100.0

0.0010.0100.1001.00010.000100.0001,000.000

Perce

nt Pa

ssing

(%)

Particle Size (mm)




4688-01 Lab 15-16-590.xlsC-19

final sediment characterization report combie reservoir sediment and mercury … · 2019-04-29 ·...

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