SPI Anderson PERMIT APPLICATION NO . SAC 12-01- Comments Thomas, Hal to: R9AirPermits 11/25/2013 11:43 AM

From: "Thomas, Hal" <HThomas@buttecounty.net>
To: R9AirPermits@EPA,

In our review of the fuel conditions included in the proposed permit, we do not see a requirement that the fuel be “clean cellulosic biomass” as defined in 40 CFR 241.2

. We would request that this condition be included in the proposed permit language. Testing of urban wood waste fuel associated with the Oroville POPI facility (attached) has indicated that wood fuel associated with urban wood waste contains high levels of metals including lead and arsenic exceeding levels found in virgin wood materials. Contaminants associated with urban wood waste including plastics and plastics associated with orchard waste have resulted in levels of dioxin in fly ash as high as 2600 ppt WHO TEQ. We have attached a report of findings prepared for the Butte County District Attorney. The proposed permit does not restrict the distribution of fly ash to agricultural lands and both Butte and Glenn Counties have been the disposal site for biomass ash contaminated with metals above hazardous waste levels. Dioxin contaminated fly ash was deposited on agricultural lands in the Chico area at levels exceeding the
State agricultural soils health standard of 40 ppt. Adequate testing and

waste characterization of fly ash generated in the Anderson facility

must be required to protect public health as fly ash from Anderson may be disposed of in our counties.

As contaminants in urban wood fuel are effectively unregulated by the proposed permit, it is important to public health and the quality of North Valley soils that biomass fuel be restricted to clean cellulosic biomass and that distribution of fly ash to agricultural soils be limited to ash that meets applicable state and federal standards including metals standards for agricultural soil amendments. We thank you for the opportunity to comment on this permit.

Harold M. Thomas Special Deputy District Attorney Yolo, Glenn, and Butte Counties

25 County Center Dr. Oroville, California 95965

ROF POPI Dioxins 8-29-12.pd f Dioxins 8-29-12.pdReport of Findings

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## REPORT OF FINDINGS

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- generated Ash Sampling : August 29, 2012

PACIFIC OROVILLE POW ER, INC.

OROVILLE, CA

P R EP AR ED FOR

Butte County Deputy District Attorney

Harold Thomas

25 County Center Dr. Oroville, CA 95965

P R EP AR ED BY

Chico Environmental Science and Planning

333 Main Street, Suite 260
Chico, CA 95928

DECEMBER 2 7 , 2012Report of Findings

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### John Lane Professional Geologist 7717

Report of Findings

For:

Butte County Deputy District Attorney Harold Thomas 25 County Center Dr. Oroville, CA 95965

December 2 7 , 2012

This Report of Findings has been prepared by the staff of Chico Environmental Science and Planning under direction of a State of California Registered Geologist whose seal and/or signature appears hereon.

This Report of Findings has been prepared in an objective and unbiased manner and in accord with generally accepted professional practice for this type of work. Chico Environmental believes the results, specifications, conclusions and professional opinions to be accurate and rel evant but cannot accept responsibility for the accuracy or completeness of public documentation or possible withholding of information by interviewees or other private parties. We make no other warranty, either expressed or implied.Report of Findings

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### TABLE OF CONTENTS

REPORT OF FINDINGS

................................ ................................ ................................ ................................ ................... 1

TABLE OF CONTENTS

................................ ................................ ................................ ................................ ....................... 3

1.0 INTRODUCTION

................................ ................................ ................................ ................................ .................... 4

2.0 SITE IDENTIFICATION INFORMATION

................................ ................................ ................................ . 4

3.0 SITE CONDITIONS AND BACKGROUND INFOR MATION

................................ ............................ 5

4.0 PURPOSE

................................ ................................ ................................ ................................ ................................ .... 5

5.0 HUMAN HEALTH EF FECTS OF POLLUTANTS

................................ ................................ ................. 11

6.0 CONCLUSIONS AND RECOMMENDATIONS

................................ ................................ ....................... 12

7.0 QUALIFICATIONS AND S IGNATURE

................................ ................................ ................................ ...... 12

8.0 REFERENCES

................................ ................................ ................................ ................................ ......................... 13

APPENDIX A: SUNSTAR LABORATORY ANALYSIS

................................ ................................ ................ 15

APPENDIX B: FRONTIER ANALYTICAL LABORATORIES

................................ ................................ ................. 16Report of Findings

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### 1.0 INTRODUCTION

C hico Environmental c reated this Report of Findings based on labor atory results of ash samples collected August 29, 2012 from the Pacific Oroville Power, Inc

. (POPI) facility

. This report includ es results of laboratory analys e s, general research, observations and professional opinions . Samples were collecte d by John Lane of Chico Environmental and the Butte County District Attorney Special Investigator (BCDA SI) George Barber

.



### 2.0 SITE IDENTIFICA TION INFORMATION

Site: Pacific Oroville Power, Inc

.

3050 S. 5th Ave.
Oroville, Butte County, CA 95965

Lead Agency: Butte County Deputy District Attorney

Harold Thomas
25 County Center Dr.
Oroville, CA 95965

Environmental Ch ico Environmental Science and Planning

Services 333 Main Street, Suite 260

Contractor: Chico, CA 95928

(530) 899

- 2900

Registrations: Professional Geologist #7717



### 3.0 SITE CONDITIONS AND BACKGROUND INFOR MATION

Chico Environmental staff coll ected samples of fly ash, bottom ash, and ash from the facility’s boiler at the POPI facility in Oroville, C alifornia . At the time of sampling, several piles of ash material were observed within the facility.Report of Findings

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### 4.0 PURPOSE

This Report of Findings w as performed by Chico Environmental to determine the chemical composition and potential tox icity of a sh material located at the POPI facility.

4.1 ASH SAMPLING

On August 29, 2012, Chico Environmental staff collected samples of ash from the POPI facility in Oroville. The ash was unconsolidated, loose material including nails, screws, rocks up to approximately 1.5 inches in diameter and other unidentifiable materials. The Butte County District Attorney’s Special Investigator (BCDA SI) ob served the sampling procedures. Duplicate samples were collected at each location and were given to the POPI manager, Wayne Amer who also observed sample collection. The other samples were split at SunStar Laboratory in Lake Forest, CA, and half of each sample was sent to Frontier Analytical Laboratories in El Dorado Hills, CA. Sample S1 contains fly ash, sample S2 contains bottom ash, and sample S3 contains ash from the facility’s boiler. All samples were collected within the POPI facility.

4.2 METHODO LOGY

Samples were collected using a 4 oz. glass jar as the sampling tool and sample container. Each sample was collected using an upward or downward scooping motion to fill the jar. If the first scoop did not fill the jar, a second or third scoop was m ade (from the same point) to entirely fill the jar. A clean set of nitrile gloves were used during each sample collection. Sample containers were labeled prior to sample collection. After the samples were collected, they were packed in a pre

cooled ice chest at approximately 4 o C for transportation to the lab. SunStar Laboratories and Frontier Analytical Laboratories were selected because they are both state

- certified hazardous materials testing laboratories. Proper chain

- of

- custody procedures were follo wed at all times. Prior to shipping the samples, the BCDA SI placed “Evidence” seals on the containers in the presence of Chico Environmental staff. The BCDA SI did not take or release custody of the samples; therefore, he did not sign the Chain of Custo dy form.

4.3 CHEMICAL ANALYS IS

The ash samples were analyzed at SunStar Labs for pH by EPA Method 9045A, Mercury by EPA Method 7471A, and Title 22 Metals by EPA Method 6010B. The ash samples were analyzed at Frontier Analytical Laboratories for p olychlorinated dibenzodioxins and polychlorinated dibenzofurans by EPA Method 8290.Report of Findings

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Table 1 is a quick reference to the SunStar Labs sample results for Title 22 Metals with bold and highlighted cells indicating the level detected was greater than one or more of the regulatory limits. Appendix A contains greater detail for each sample analysis. Results from SunStar labs showed that all samples exceeded the California Human Health Screening Level (CHHSL), the Regional Screening Levels (RSL), and the Environmental Screening Levels (ESL) for Residential and Industrial soils for Arsenic.

ND=none detected Table 1 POPI sample results (mg/kg)

Constituent S1 S2 S3
Antimony ND ND ND

Silver ND ND ND

Arsenic 7.7 10 10

Barium 530 480 470 Beryllium ND ND ND

Cadmium ND ND ND

Chromium III 30 35 36

Cobalt 11 12 12
Copper 150 200 190

Lead 32 42 43 Molybdenum ND ND ND

Nickel 36 42 44

Selenium ND ND ND

Thallium ND ND ND

Vanadium 53 57 61

Zinc 330 450 340
Mercury ND ND NDReport of Findings

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- generated Ash Sampling Pacific Oroville Powe r, Inc. 7 Table 2 is a quick reference table showing these standards.

PH According to the Resource Conservation and Recovery Act (RCRA), material is deemed to be toxic if it displays the following characteristics:

 Ignitable (Flashpoint <140 oF)

 Corrosive (aqueous pH < 2 or > 12.5)

 Reactive (normally unstable, undergoes violent changes without detonating, water reactive)

 Toxic (exceeding the regulatory limits for contaminants under the TCLP or “7

- 11 test” analysis)

Table 3 displays the pH sample result s from the three discrete samples. Note that all samples exceed the RCRA hazardous waste corrosivity standard since none of the samples fell within the

non

- hazardous waste range of 2

- 12.5 pH units.

Table 3: pH levels
S1 S2 S3 hazardous waste limit
12.9 1 3.1 13.1 <2 or >12.5Report of Findings

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- generated Ash Sampling Pacific Oroville Power, Inc. 8 PCDD/F (DIOXINS)

Table 4 displays the detected amounts of each PCDD/F congener as well as the TEQ values of the collected samples. The TEQ values greatly exceed the CHHSL, ESL, RSL, and SQuiRT limits. Table 4 Ash Samples 8

- 29

- 2012, PCDD/F results

S1 S2 S3 units
2,3,7,8

- TCDD 474 216 291 pg/g
1,2,3,7,8

- PeCDD 999 470 602 pg/g
1,2,3,4,7,8

- HxCDD 479 257 354 pg/g
1,2,3,6,7,8

- HxCDD 447 239 338 pg/g
1,2,3,7,8,9

- HxCDD 397 225 296 pg/g
1,2,3,4,6,7,8

- HpCDD 860 503 731 pg/g

OCDD 590 253 348 pg/g
2,3,7,8

- TCDF 2520 1380 1640 pg/g
1,2,3,7,8

- PeCDF 1610 852 1120 pg/g
2,3,4,7,8

- PeCDF 1880 1030 1410 pg/g
1,2,3,4,7,8

- HxCDF 565 352 487 pg/g
1,2,3,6,7,8

- HxCDF 723 432 596 pg/g
2,3,4,6,7,8

- HxCDF 611 452 653 pg/g
1,2,3,7,8,9

- HxCDF 118 114 160 pg/g
1,2,3,4,6,7,8

- HpCDF 484 353 538 pg/g
1,2,3,4,7,8,9

- HpCDF 46.6 55.2 78.9 pg/g

OCDF 21.3 31.1 45.2 pg/g
TEQ 2690 1370 1820 pg/gReport of Findings

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- generated Ash Sampling Pacific Oroville Power, Inc. 9 Table 5 shows the ESL, CHHSL, and RSL exceedance values for PCDD/F TEQ. Descriptions of the regulatory guidelines can be seen above.

Table 5
Standards for 2,3,7,8 TCDD TEQ (dioxins and furans)

residential commercial/

industrial threshold

effects level permissible

exposure units

ESL: shallow soil, source of drinking

water 4.49 18.37 n/a n/a pg/g
ESL: shallow soil, not drinking water 4.49 18.37 n/a n/a pg/g ESL: deep soil, source of drinking water 227.14 227.14 n/a n/a pg/g ESL: deep soil, not drinking water 227.14 227.14 n/a n/a pg/g ESL: direct exposure 4.49 18.37 n/a n/a pg/g

CHHSL 4.6 19 n/a n/a pg/g
RSL 4.5 18 n/a n/a pg/g SQuiRTs n/a n/a 0.85 21.5 pg/g

The Environmental Screening Levels (ESLs) were established by the California Water Quality Control Board. As stated by Elizabeth Allen of the California Regional Water Quality Control Board San Francisco Bay Region in the ESL cover memo, “The ESLs are intended to help expedite the identification of potential environmental concerns at sites where contamination has been identified, and expedite the evaluation regarding the need for possible cleanup of these properties. Data collected at a site ca n be directly compared to the ESLs and the need for additional actions quickly determined.”

The California Human Health Screening Levels (CHHSLs) come from the Office of Environmental Health Hazard Assessment (OEHHA). The OEHHA disclaimer to the list of co ntaminant levels states that CHHSLs are “not intended to establish policy or regulation. The Human Health Screening Levels presented here are not to serve as: 1) a stand

- alone decision making tool, 2) a substitute for guidance for the preparation of baseli ne human health risk assessments, 3) a rule to determine if a waste is hazardous under the state or federal regulations, 4) a rule to determine when the release of hazardous chemicals must be reported to the overseeing regulatory agency, 5) set of final cl eanup or action levels to be applied at contaminated sites or 6) a guarantee that an oversight regulatory agency will determine that a project is adequately studied or agree with the conclusions of the site investigation and risk assessment report.”

Region al Screening Levels (RSLs) were developed by the Environmental Protection Agency. They are risk

- based tools for evaluating and cleaning up contaminated sites that fall in the EPA designated Region 9, which includes Arizona, California, Hawaii, Nevada, and the Pacific Islands. They are being used to streamline and standardize all stages of the risk decision

- making process. RSLs combine current human health toxicity values with standard exposure factors to estimate contaminant concentrations in environmental media (soil, air, and water) that are considered by the EPA to be health protective of human exposures (including sensitive groups), over a lifetime.Report of Findings

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- generated Ash Sampling Pacific Oroville Power, Inc. 10 Chemical concentrations above these levels would not automatically designate a site as "dirty" or trigger a response action. However, exceeding a PRG suggests that further evaluation of the potential risks that may be posed by site contaminants is appropriate.

Screening Quick Reference Tables were developed by The National Oceanic and Atmospheric Administratio n (NOAA). The SQuiRT values were developed to help measure the potential risk from contaminated water, sediment, or soil as a preliminary screening tool. NOAA uses them to identify possible impacts to coastal resources and habitats potentially affected by hazardous waste sites. SQuiRT values do not represent official NOAA policy and do not constitute criteria or cleanup levels. NOAA does not endorse their use for any purpose other than preliminary screening.



### 5.0 HUMAN HEALTH EFFECTS OF POLLUTANTS

Arsenic is a naturally occurring element which is notoriously poison ous to humans. Several hundred arsenic compounds are commonly used in pesticides, herbicides, insecticides and alloys. Arsenic and its compounds are considered category 1 carcinogens by th e European Union and can lead to death in humans by multiple organ failure. Arsenic is commonly found in drinking water and the EPA has set the Maximum Contaminant Level (MCL) for drinking water at ten parts per billion.

PCDD/Fs are very toxic to certain animals particularly in the early stages of development. Studies have shown dioxins to have a range of adverse effects on a wide number of animals, including reproductive or developmental effects such as weakened immune responses and behavior changes in of fspring. Plants do not generally absorb dioxin. However, PCDD/Fs will stick to organic matter such as ash, soil, and plants. Animals or people can obtain PCDD/Fs by eating plants that are exposed to dioxins. PCDD/Fs then can become a serious concern as bio magnification occurs throughout the affected food chain.

Bioaccumulation and biomagnification of dioxin refers to the accumulation of PCDD/Fs in organisms along a food chain. Through biomagnification, animal s in higher trophic levels will experience a higher concentration of P DDD/Fs over time. Because dioxins are widely distributed throughout the environment in low concentrations and are persistent and accumulated, most people have detectable levels of PCDD/Fs in their tissues. These levels, in the low parts per trillion, have accumulated over a lifetime and will persist for years, even if no additional exposure were to occur. This background exposure is likely to result in an increased risk of cancer and is uncomfortably close to levels that can cause subtle adverse non

- cancer effects in animals and humans. The higher up the food chain PCDD/Fs are present in, the higher the concentration of PCDD/Fs that are present in an organism.

Materials having a pH of around 13

- as seen in the samples collected

- are extremely alkaline. Exposure to extreme pH values can lead to health effects including irritation of the eyes, skin, and mucous membranes. In addition, high pH has been associated with swollen hair fibers and exacerbation of skin disorders. There are also numerous detrimental environmental effects of extremely high pH levels in systems that are not adapted for them.Report of Findings

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### 6.0 CONCLUSIONS AND RECO MMENDATIONS

A ll samples collected during this sampling event exceed ed guidelines and/or regulation levels for
p H, T itle 22 M etals, and PCDD/ Fs

. S ample pH values were 12.9, 13.1, and 13.1 which e xceed hazardous waste levels based on RCRA regulations. Arsenic levels in all samples exceeded C HHSL, RSL and ESL guidelines. Arsenic levels were 7.7, 10, and 10 parts per million for samples S1, S2, and S3 respectively. None of the samples, exceeded TTLC hazardous waste levels for arsenic. Sample PCDD/F TEQ levels greatly exceeded CHHSL, ESL, RSL, and SQuiRT standards. PCDD/F TEQ levels were 2690, 1370, and 1820 parts per trillion for samples S1, S2, and S3, respectively. These levels also do not exceed TTLC hazardous waste levels for PCDD/Fs. Based on the results of the sample analy sis
, t his material does not meet the applicable environmental standards for use as a soil amendment

.



### 7.0 QUALIFICATIONS AND S IGNATURE

Chico Environmental has performed this assessment under my supervision in accordance with generally accepted environmental practices and procedures, as of the date of t his report. I have employed the degree of care and skill ordinarily exercised under similar circumstances by reputable environmental professionals practicing in this area. The conclusions contained within this assessment are based upon site conditions read ily observed or were reasonably ascertainable and present at the time of the site inspection.

The conclusions and recommendations stated in this report are based upon personal observations made by employees of Chico Environmental and upon information provi ded by others. I have no reason to suspect or believe that information provided is inaccurate.

Signature of Professional Geologist

– John Lane, P.G. No. 7717

12/2 7 /2012

Signature/Seal of Professional Geologist DateReport of Findings

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### 8 .0 REFERENCES

Agency for Toxic Substances and Disease Registry (ATSDR). United States Department of Health and Human Services. U.S. Public Health Service Toxicological Profile, Chlorinated Dibenzo

- p

- Dioxins (CDDs). 1998.

California Code of Regulations. T itle 27. Criteria for All Waste Management Units, Facilities, and Disposal Sites section 20200(b), updated 2010

Chang, Yu

- Min, Wen

- Pin Fan, Wen

- Chien Dai, Hsing

- Cheng Hsi, Chao

- Hsiung Wu, and Ching

- Ho Chen. "Characteristics of PCDD/F content in fly ash dis charged from municipal solid waste incinerators."Journal of Hazardous Materials. 192 (2011): 521

- 529. Web. 24 Aug. 2012

De Meeus, C, G.H. Eduljee, and M.Hutton. 2002. Assessment and management of risks arising from exposure to cadmium in fertilizers. Sci. Total Environ. 291:167

– 187

Environmental Protection Agency. Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW 846). EPA Method 6010B: Inductively Coupled Plasma Emission Spectrometry. December, 1996.

Environmental Protection Agency. Te st Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW 846). EPA Method 7471B: Mercury in Solid or Semi

- Solid Waste Revision 2. February, 2007.

Environmental Protection Agency. Test Methods for Evaluating Solid Waste, Physical/Chemical Metho ds (SW 846). EPA Method 8290: Polychlorinated Dibenzodioxins (PCDDs) and Polychlorinated Dibenzofurans (PCDFs) by High

- Resolution Gas Chromatography/High

- Resolution Mass Spectrometry (HRGC/HRMS). February, 2007.

Environmental Protection Agency. Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW 846). EPA Method 9045B: Soil pH. November, 2004.

Fiedler, Heidelore. Chapter 6. Dioxins and Furans (PCDD/PCDF) in The Handbook of Environmental Chemistry Vol.3, Part O Persistent Organ ic Pollutants, Springer

- Verlag Berlin Heidelberg 2003.

Hsing

- Cheng Hsi, Lin

- Chi Wang, Tsung

- Hsien Yu, Guo

- Ping Chang

- Chien. Quasi

- dynamic leaching characteristics of polychlorinated dibenzo

- p

- dioxins and dibenzofurans from raw and solidified
waste incinera tion residues. Chemosphere. Volume 71, Issue 2, Pages 284

– 293. March, 2008.

Hsing

- Cheng Hsi, and Tsung

- Hsien Yu. "Evaluation of the leachability of polychlorinated dibenzo

- p

dioxins and dibenzofurans in raw and solidified air pollution control residues fro m municipal waste incinerators."Chemosphere. 67 (2006): 1434

- 1443.

Jeannet A. Meima and Rob N. J. Comans. Application of Surface Complexation/Precipitation Modeling to Contaminant Leaching from Weathered Municipal Solid Waste Incinerator Bottom Ash. Enviro nmental Science Technology. Volume 32, Pages 688

- 693. 1998

Lohmann, R., Jones, K.C., 1998. Dioxins and furans in air and deposition: a review of levels, behaviour and processes. The Science of the Total Environment 219, 53

– 81.Report of Findings

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- generated Ash Sampling Pacific Oroville Power, Inc. 13 National Toxicology Program. United States. Department of Health and Human Services. Summary of Data for Chemical Selection: Dibenzofuran.

S. Sakai, S. Urano, H. Tatasuki. Leaching behavior of PCDD/Fs and PCBs from some waste materials. Studies in Environmental Science, Volume 71, Pa ges 715

– 724, 1997.

United States. Agency for Toxic Substances and Disease Registry. ToxFaqs

– Arsenic. August, 2007.

Van den Berg M, Birnbaum LS, Denison M, De Vito M, Farland W, Feeley M, Fiedler H, Hakansson H, Hanberg A, Haws L, Rose M, Safe S, Schrenk D, Tohyama C, Tritscher A, Tuomisto J, Tysklind M, Walker N, Peterson RE. The 2005 World Health Organization reevaluation of human and Mammalian toxic equivalency factors for dioxins and dioxin

- like compounds. Toxicol Sci. 2006 October ; 93(2): 223

– 241.

We iping Chen,Natalie Krage, Laosheng Wu, Genxing Pan Nanjing, Maryam Khosrivafard, Andrew C. Chang. Arsenic, Cadmium, and Lead in California Cropland Soils: Role of Phosphate and Micronutrient Fertilizers. J. Environ. Qual. 37:689

– 695 (2008).

World Health Or ganization. The 2005 World Health Organization reevaluation of human and Mammalian toxic equivalency factors for dioxins and dioxin

- like compounds. Toxicological sciences an official journal of the Society of Toxicology (2006) Volume: 93, Issue: 2, Pages: 223

- 241Report of Findings

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### APPENDIX A: SUNSTAR LABORATORY ANALYSISProject: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES

Date Received

SS1 T121519-01 Soil 08/29/12 13:25 09/05/12 09:50

SS2 T121519-02 Soil 08/29/12 13:30 09/05/12 09:50

SS3 T121519-03 Soil 08/29/12 13:35 09/05/12 09:50

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 1 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS1 T121519-01 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 7.7 "" " " " Arsenic 5.0

" 530 "" " " " Barium 1.0
ND " " " " " " Beryllium 1.0
ND " " " " " " Cadmium 2.0

" 30 "" " " " Chromium 2.0

" 11 "" " " " Cobalt 2.0

" 150 "" " " " Copper 1.0

" 32 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 36 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 53 "" " " " Vanadium 5.0

" 330 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 12.9 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 2 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS2 T121519-02 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 10 "" " " " Arsenic 5.0

" 480 "" " " " Barium 1.0
ND " " 09/06/12 " " " Beryllium 1.0
ND " " 09/06/12 " " " Cadmium 2.0

" 35 "" " " " Chromium 2.0

" 12 "" " " " Cobalt 2.0

" 200 "" " " " Copper 1.0

" 42 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 42 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 57 "" " " " Vanadium 5.0

" 450 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 13.1 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 3 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS3 T121519-03 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 10 "" " " " Arsenic 5.0

" 470 "" " " " Barium 1.0
ND " " " " " " Beryllium 1.0
ND " " " " " " Cadmium 2.0

" 36 "" " " " Chromium 2.0

" 12 "" " " " Cobalt 2.0

" 190 "" " " " Copper 1.0

" 43 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 44 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 61 "" " " " Vanadium 5.0

" 340 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 13.1 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 4 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES

Date Received

SS1 T121519-01 Soil 08/29/12 13:25 09/05/12 09:50

SS2 T121519-02 Soil 08/29/12 13:30 09/05/12 09:50

SS3 T121519-03 Soil 08/29/12 13:35 09/05/12 09:50

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 1 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS1 T121519-01 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 7.7 "" " " " Arsenic 5.0

" 530 "" " " " Barium 1.0
ND " " " " " " Beryllium 1.0
ND " " " " " " Cadmium 2.0

" 30 "" " " " Chromium 2.0

" 11 "" " " " Cobalt 2.0

" 150 "" " " " Copper 1.0

" 32 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 36 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 53 "" " " " Vanadium 5.0

" 330 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 12.9 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 2 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS2 T121519-02 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 10 "" " " " Arsenic 5.0

" 480 "" " " " Barium 1.0
ND " " 09/06/12 " " " Beryllium 1.0
ND " " 09/06/12 " " " Cadmium 2.0

" 35 "" " " " Chromium 2.0

" 12 "" " " " Cobalt 2.0

" 200 "" " " " Copper 1.0

" 42 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 42 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 57 "" " " " Vanadium 5.0

" 450 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 13.1 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 3 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Resul t Analyte Limit Batch Reporting Prepared Analyzed Method Notes Dilution Units SS3 T121519-03 (Soil)

SunStar Laboratories, Inc.
Metals by EPA 6010B

ND EPA 6010B 09/05/12 09/06/12 mg/kg 2090513 1 Antimony 3.0
ND " " " " " " Silver 2.0

" 10 "" " " " Arsenic 5.0

" 470 "" " " " Barium 1.0
ND " " " " " " Beryllium 1.0
ND " " " " " " Cadmium 2.0

" 36 "" " " " Chromium 2.0

" 12 "" " " " Cobalt 2.0

" 190 "" " " " Copper 1.0

" 43 "" " " " Lead 3.0
ND " " " " " " Molybdenum 5.0

" 44 "" " " " Nickel 2.0
ND " " " " " " Selenium 5.0
ND " " " " " " Thallium 2.0

" 61 "" " " " Vanadium 5.0

" 340 "" " " " Zinc 1.0
Cold Vapor Extraction EPA 7470/7471

ND EPA 7471A Soil 09/05/12 09/06/12 mg/kg 2090521 1 Mercury 0.10

Conventional Chemistry Paramet ers by APHA/EPA/ASTM Methods

EPA 9045B 13.1 2090515 09/05/12 09/05/12 pH Units 1 pH 0.1

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 4 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals by EPA 6010B - Quality Control 

### SunStar Laboratories, Inc.

Batch 2090513 - EPA 3051

Blank (2090513-BLK1) Prepared: 09/05/12 Analyzed: 09/06/12 Antimony mg/kg ND 3.0
Silver " ND 2.0
Arsenic " ND 5.0
Barium " ND 1.0 Beryllium " ND 1.0
Cadmium " ND 2.0
Chromium " ND 2.0
Cobalt " ND 2.0 Copper " ND 1.0
Lead " ND 3.0 Molybdenum " ND 5.0
N ickel " ND 2.0
Selenium " ND 5.0
Thallium " ND 2.0
Vanadium " ND 5.0
Zinc " 1.30 1.0 QB-01

LCS (2090513-BS1) Prepared: 09/05/12 Analyzed: 09/06/12 Arsenic mg/kg 99.8 5.0 100 75-125 99.8
Barium " 99.0 1.0 100 75-125 99.0
Cadmium " 97.6 2.0 100 75-125 97.6
Chromium " 99.5 2.0 100 75-125 99.5
Lead " 102 3.0 100 75-125 102
Matrix Spike (2090513-MS1) Prepared: 09/05/12 Analyzed: 09/06/12 Source: T121519-02 Arsenic mg/kg 99.6 5.0 100 10.4 75-125 89.2
Barium " 577 1.0 100 476 75-125 101
Cadmium " 84.6 2.0 100 0.745 75-125 83.9
Chromium " 124 2.0 100 35.2 75-125 88.6
Lead " 130 3.0 100 42.4 75-125 87.8

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 5 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals by EPA 6010B - Quality Control 

### SunStar Laboratories, Inc.

Batch 2090513 - EPA 3051

Blank (2090513-BLK1) Prepared: 09/05/12 Analyzed: 09/06/12 Antimony mg/kg ND 3.0
Silver " ND 2.0
Arsenic " ND 5.0
Barium " ND 1.0 Beryllium " ND 1.0
Cadmium " ND 2.0
Chromium " ND 2.0
Cobalt " ND 2.0 Copper " ND 1.0
Lead " ND 3.0 Molybdenum " ND 5.0
N ickel " ND 2.0
Selenium " ND 5.0
Thallium " ND 2.0
Vanadium " ND 5.0
Zinc " 1.30 1.0 QB-01

LCS (2090513-BS1) Prepared: 09/05/12 Analyzed: 09/06/12 Arsenic mg/kg 99.8 5.0 100 75-125 99.8
Barium " 99.0 1.0 100 75-125 99.0
Cadmium " 97.6 2.0 100 75-125 97.6
Chromium " 99.5 2.0 100 75-125 99.5
Lead " 102 3.0 100 75-125 102
Matrix Spike (2090513-MS1) Prepared: 09/05/12 Analyzed: 09/06/12 Source: T121519-02 Arsenic mg/kg 99.6 5.0 100 10.4 75-125 89.2
Barium " 577 1.0 100 476 75-125 101
Cadmium " 84.6 2.0 100 0.745 75-125 83.9
Chromium " 124 2.0 100 35.2 75-125 88.6
Lead " 130 3.0 100 42.4 75-125 87.8

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 5 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals by EPA 6010B - Quality Control 

### SunStar Laboratories, Inc.

Batch 2090513 - EPA 3051
Matrix Spike Dup (2090513-MSD1) Prepared: 09/05/12 Analyzed: 09/06/12 Source: T121519-02 Arsenic mg/kg 97.4 5.0 100 10.4 20 75-125 87.0 2.21
Barium " 577 1.0 100 476 20 75-125 101 0.0842
Cadmium " 84.6 2.0 100 0.745 20 75-125 83.8 0.0764
Chromium " 124 2.0 100 35.2 20 75-125 88.8 0.0936
Lead " 130 3.0 100 42.4 20 75-125 87.4 0.349

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 6 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Cold Vapor Extraction EPA 7470/7471 - Quality Control 

### SunStar Laboratories, Inc.

Batch 2090521 - EPA 7471A Soil

Blank (2090521-BLK1) Prepared: 09/05/12 Analyzed: 09/06/12 Mercury mg/kg ND 0.10

LCS (2090521-BS1) Prepared: 09/05/12 Analyzed: 09/06/12 Mercury mg/kg 0.395 0.10 0.417 80-120 94.8
Matrix Spike (2090521-MS1) Prepared: 09/05/12 Analyzed: 09/06/12 Source: T121527-01 Mercury mg/kg 0.427 0.10 0.417 0.0395 75-125 93.0
Matrix Spike Dup (2090521-MSD1) Prepared: 09/05/12 Analyzed: 09/06/12 Source: T121527-01 Mercury mg/kg 0.394 0.10 0.417 0.0395 20 75-125 85.0 8.06

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 7 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by AP HA/EPA/ASTM Methods - Quality Control 

### SunStar Laboratories, Inc.

Batch 2090515 - General Preparation
Duplicate (2090515-DUP1) Prepared & Analyzed: 09/05/12 Source: T121519-01

p H pH Units 12.8 0.1 12.9 20 0.389

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 8 of 9Project: Project Number: Project Manager: Reported: Chico Environmental 333 Main Street, Suite 260 7496
John Lane Covanta/POPI

09/12/12 17:23 Chico CA, 95928 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone

949.297.5027 Fax

Notes and Definitions

QB-01 The method blank contains analyte at a concentration above the MRL; however, concentration is less than 10% of the sample result, which is negligible according to method criteria.

Sample results reported on a dry weight basis

Relative Percent Difference RPD dry N ot Reported N R Analyte NOT DETECTED at or above the reporting limit N D Analyte DETECTED DET

Daniel Chavez, Project Manager SunStar Laboratories, Inc. The results in this report apply to the sample s analyzed in accordance with the chain of custody document. This analytical repor t must be reproduced in its entirety.

Page 9 of 9Draft Report of Findings 16

Co

- generated Ash Sampling P acific Oroville Power

, Inc.



### APPENDIX B : FRONTIER ANALYTICAL LABORATOR IESSeptember 10, 2012

FAL Project ID: 7496

Mr. John Lane Chico Environmental 333 Main Street, Suite 260 Chico, CA 95928

Dear Mr. Lane,

Attached are the results for Fron tier Analytical Laboratory project 7496 . This corresponds to your Covanta/POPI project. Three ash samples were received on 8/31/2012 in good condition. All three ash samples were extract ed and analyzed by EPA Method 8290 for tetra through octa chlorinated dibenz o dioxins and furans. The 2005 World Health Organizations toxic equivalency factors (TEFs) were used to calculate the toxic equivalents (TEQs) on your report. Chico Environmental requested a turnaround time of fifteen business days for project 7496

.
Please note that due to high le vels of 2,3,7,8-TCDF, all three sample extracts required dilution. Results taken from these diluti ons are noted with the “*” qualifier.

The following report consists of an Analytical Data section and a Sample Receipt section. The Analytical Data section contains our project-sample tracking log and the analytical results. The Sample Receipt section contains your chain of custody, our sample login form and a sample photo. The attached results are specifically for the samples referenced in this report only. These results meet all NELAC requirements and shall not be reproduced except in full. This report has been emailed to you as a PDF file. A hardco py will not be sent to you unless specifically requested.

If you have any questions regarding project 7496 , please contact me at (916) 934-0900. Thank you for choosing Frontier Analytical Laboratory for your analytical testing needs.

Sincerely,

Bradley B. Silverbush Director of Operations

FRONTIER ANALYTICAL LABORATORY 5172 Hillsdale Circle * El Dorado Hills, CA 95762 Tel (916) 934-0900 * Fax (916) 934-0999 www.frontieranalytical.com of 000010 000001

## Frontier Analytical Laboratory

Sample Tracking Log

FAL Project ID: 7496

Received on: 08/31/2012 Project Due: 09/25/2012 Storage: R1

FAL Sample ID Dup Client Pro j ect ID Client Sample ID Requested Method Matrix Sampling Date Sampling Time Hold Time Due Date

7496-001-SA 0 Covanta / Popi S1 EPA 8290 D/F A sh 08/29/2012 01:25 pm 09/28/2012
7496-002-SA 0 Covanta / Popi S2 EPA 8290 D/F A sh 08/29/2012 01:30 pm 09/28/2012
7496-003-SA 0 Covanta / Popi S3 EPA 8290 D/F A sh 08/29/2012 01:35 pm 09/28/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com of 000010 000002

## EPA Method 8290 PCDD/F

FAL ID: 7496-001-MB Date Extracted: 09-04-2012 ICal: PCDDFAL3-6-28-12 A cquired: 09-05-2012 Client ID: Method Blank Date Received: NA GC Column: DB5 2005 WHO TEQ: 0.00 Matrix: Ash A mount: 5.00 g Units: pg/g Basis: Dry Weight Batch No: X2649

Compound Conc DL Qual 2005 WHO Tox MDL Compound Conc DL Qual

2,3,7,8-TCDD ND 0.151 - 0.0414 1,2,3,7,8-PeCDD ND 0.244 - 0.0563 1,2,3,4,7,8-HxCDD ND 0.453 - 0.0747 1,2,3,6,7,8-HxCDD ND 0.493 - 0.0810 Total TCDD ND 0.151 1,2,3,7,8,9-HxCDD ND 0.447 - 0.0748 Total PeCDD ND 0.244 1,2,3,4,6,7,8-HpCDD ND 0.495 - 0.138 Total HxCDD ND 0.493 OCDD ND 0.770 - 0.248 Total HpCDD ND 0.495

2,3,7,8-TCDF ND 0.136 - 0.0435 1,2,3,7,8-PeCDF ND 0.247 - 0.0608 2,3,4,7,8-PeCDF ND 0.256 - 0.0660 1,2,3,4,7,8-HxCDF ND 0.164 - 0.0484 1,2,3,6,7,8-HxCDF ND 0.167 - 0.0487 2,3,4,6,7,8-HxCDF ND 0.205 - 0.0531 1,2,3,7,8,9-HxCDF ND 0.271 - 0.0607 Total TCDF ND 0.136 1,2,3,4,6,7,8-HpCDF ND 0.291 - 0.0642 Total PeCDF ND 0.256 1,2,3,4,7,8,9-HpCDF ND 0.265 - 0.0704 Total HxCDF ND 0.271 OCDF ND 0.676 - 0.151 Total HpCDF ND 0.291

Internal Standards % Rec QC Limits Qual

13C-2,3,7,8-TCDD 92.0 40.0 - 135 13C-1,2,3,7,8-PeCDD 101 40.0 - 135 13C-1,2,3,4,7,8-HxCDD 91.2 40.0 - 135 13C-1,2,3,6,7,8-HxCDD 87.6 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDD 78.7 40.0 - 135 13C-OCDD 65.5 40.0 - 135

13C-2,3,7,8-TCDF 92.7 40.0 - 135 13C-1,2,3,7,8-PeCDF 92.5 40.0 - 135 13C-2,3,4,7,8-PeCDF 93.4 40.0 - 135 13C-1,2,3,4,7,8-HxCDF 106 40.0 - 135 13C-1,2,3,6,7,8-HxCDF 104 40.0 - 135 13C-2,3,4,6,7,8-HxCDF 92.3 40.0 - 135 13C-1,2,3,7,8,9-HxCDF 91.3 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDF 86.1 40.0 - 135 13C-1,2,3,4,7,8,9-HpCDF 127 40.0 - 135 13C-OCDF 78.8 40.0 - 135

Cleanup Surrogate

37Cl-2,3,7,8-TCDD 97.8 50.0 - 150

A nalyst: Reviewed By:

Date: Date: A Isotopic Labeled Standard outside QC range but signal to noise ratio is >10:1 B Analyte is present in Method Blank
C Chemical Interference D Presence of Diphenyl Ethers E Analyte concentration is above calibration range F Analyte confirmation on secondary column J Analyte concentration is below calibration range M Maximum possible concentration ND Analyte Not Detected
NP Not Provided P Pre-filtered through a Whatman 0.7um GF/F filter S Sample acceptance criteria not met
X Matrix interferences * Result taken from dilution or reinjection

9/7/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com 9/10/2012

of 000010

000003

## EPA Method 8290 PCDD/F

FAL ID: 7496-001-OPR Date Extracted: 09-04-2012 ICal: PCDDFAL3-6-28-12 A cquired: 09-05-2012 Client ID: OPR Date Received: NA GC Column: DB5 2005 WHO TEQ: NA Matrix: Ash A mount: 5.00 g Units: ng/ml Batch No: X2649

Compound Conc QC Limits Qual

2,3,7,8-TCDD 10.4 7.00 - 13.0 1,2,3,7,8-PeCDD 49.1 35.0 - 65.0 1,2,3,4,7,8-HxCDD 51.7 35.0 - 65.0 1,2,3,6,7,8-HxCDD 52.4 35.0 - 65.0 1,2,3,7,8,9-HxCDD 48.4 35.0 - 65.0 1,2,3,4,6,7,8-HpCDD 54.8 35.0 - 65.0 OCDD 99.7 70.0 - 130

2,3,7,8-TCDF 11.3 7.00 - 13.0 1,2,3,7,8-PeCDF 49.0 35.0 - 65.0 2,3,4,7,8-PeCDF 49.5 35.0 - 65.0 1,2,3,4,7,8-HxCDF 48.7 35.0 - 65.0 1,2,3,6,7,8-HxCDF 47.0 35.0 - 65.0 2,3,4,6,7,8-HxCDF 47.1 35.0 - 65.0 1,2,3,7,8,9-HxCDF 46.0 35.0 - 65.0 1,2,3,4,6,7,8-HpCDF 49.3 35.0 - 65.0 1,2,3,4,7,8,9-HpCDF 48.0 35.0 - 65.0 OCDF 90.5 70.0 - 130

Internal Standards % Rec QC Limits Qual

13C-2,3,7,8-TCDD 83.0 40.0 - 135 13C-1,2,3,7,8-PeCDD 90.3 40.0 - 135 13C-1,2,3,4,7,8-HxCDD 98.1 40.0 - 135 13C-1,2,3,6,7,8-HxCDD 98.9 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDD 75.9 40.0 - 135 13C-OCDD 58.4 40.0 - 135

13C-2,3,7,8-TCDF 88.5 40.0 - 135 13C-1,2,3,7,8-PeCDF 85.0 40.0 - 135 13C-2,3,4,7,8-PeCDF 84.4 40.0 - 135 13C-1,2,3,4,7,8-HxCDF 119 40.0 - 135 13C-1,2,3,6,7,8-HxCDF 117 40.0 - 135 13C-2,3,4,6,7,8-HxCDF 102 40.0 - 135 13C-1,2,3,7,8,9-HxCDF 96.3 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDF 85.5 40.0 - 135 13C-1,2,3,4,7,8,9-HpCDF 123 40.0 - 135 13C-OCDF 68.7 40.0 - 135

Cleanup Surrogate

37Cl-2,3,7,8-TCDD 92.2 50.0 - 150

A nalyst: Reviewed By:

Date: Date: A Isotopic Labeled Standard outside QC range but signal to noise ratio is >10:1 B Analyte is present in Method Blank
C Chemical Interference D Presence of Diphenyl Ethers E Analyte concentration is above calibration range F Analyte confirmation on secondary column J Analyte concentration is below calibration range M Maximum possible concentration ND Analyte Not Detected
NP Not Provided P Pre-filtered through a Whatman 0.7um GF/F filter S Sample acceptance criteria not met
X Matrix interferences * Result taken from dilution or reinjection

9/7/2012 9/10/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com of 000010 000004

## EPA Method 8290 PCDD/F

FAL ID: 7496-001-SA Date Extracted: 09-04-2012 ICal: PCDDFAL3-6-28-12 A cquired: 09-05-2012 Client ID: S1 Date Received: 08-31-2012 GC Column: DB5 2005 WHO TEQ: 2690 Matrix: Ash A mount: 5.01 g Units: pg/g Basis: Dry Weight Batch No: X2649 % Solids: 73.94

Compound Conc DL Qual 2005 WHO Tox MDL Compound Conc DL Qual

2,3,7,8-TCDD 474 - 474 0.0414 1,2,3,7,8-PeCDD 999 - 999 0.0563 1,2,3,4,7,8-HxCDD 479 - 47.9 0.0747 1,2,3,6,7,8-HxCDD 447 - 44.7 0.0810 Total TCDD 11900 - 1,2,3,7,8,9-HxCDD 397 - 39.7 0.0748 Total PeCDD 10100 - 1,2,3,4,6,7,8-HpCDD 860 - 8.60 0.138 Total HxCDD 6300 - OCDD 590 - 0.177 0.248 Total HpCDD 1590 -

2,3,7,8-TCDF 2520 - F,* 252 0.0435 1,2,3,7,8-PeCDF 1610 - 48.3 0.0608 2,3,4,7,8-PeCDF 1880 - 564 0.0660 1,2,3,4,7,8-HxCDF 565 - 56.5 0.0484 1,2,3,6,7,8-HxCDF 723 - 72.3 0.0487 2,3,4,6,7,8-HxCDF 611 - 61.1 0.0531 1,2,3,7,8,9-HxCDF 118 - 11.8 0.0607 Total TCDF 46500 - D,M,* 1,2,3,4,6,7,8-HpCDF 484 - 4.84 0.0642 Total PeCDF 22000 - D,M 1,2,3,4,7,8,9-HpCDF 46.6 - 0.466 0.0704 Total HxCDF 5870 - D,M OCDF 21.3 - 0.00639 0.151 Total HpCDF 694 -

Internal Standards % Rec QC Limits Qual

13C-2,3,7,8-TCDD 81.2 40.0 - 135 13C-1,2,3,7,8-PeCDD 93.8 40.0 - 135 13C-1,2,3,4,7,8-HxCDD 83.8 40.0 - 135 13C-1,2,3,6,7,8-HxCDD 83.0 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDD 92.5 40.0 - 135 13C-OCDD 79.2 40.0 - 135

13C-2,3,7,8-TCDF 88.1 40.0 - 135 13C-1,2,3,7,8-PeCDF 95.5 40.0 - 135 13C-2,3,4,7,8-PeCDF 93.6 40.0 - 135 13C-1,2,3,4,7,8-HxCDF 90.9 40.0 - 135 13C-1,2,3,6,7,8-HxCDF 88.6 40.0 - 135 13C-2,3,4,6,7,8-HxCDF 88.0 40.0 - 135 13C-1,2,3,7,8,9-HxCDF 90.6 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDF 83.7 40.0 - 135 13C-1,2,3,4,7,8,9-HpCDF 112 40.0 - 135 13C-OCDF 90.9 40.0 - 135

Cleanup Surrogate

37Cl-2,3,7,8-TCDD 91.0 50.0 - 150

A nalyst: Reviewed By:

Date: Date: A Isotopic Labeled Standard outside QC range but signal to noise ratio is >10:1 B Analyte is present in Method Blank
C Chemical Interference D Presence of Diphenyl Ethers E Analyte concentration is above calibration range F Analyte confirmation on secondary column J Analyte concentration is below calibration range M Maximum possible concentration ND Analyte Not Detected
NP Not Provided P Pre-filtered through a Whatman 0.7um GF/F filter S Sample acceptance criteria not met
X Matrix interferences * Result taken from dilution or reinjection

9/7/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com 9/10/2012

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000005

## EPA Method 8290 PCDD/F

FAL ID: 7496-002-SA Date Extracted: 09-04-2012 ICal: PCDDFAL3-6-28-12 A cquired: 09-05-2012 Client ID: S2 Date Received: 08-31-2012 GC Column: DB5 2005 WHO TEQ: 1370 Matrix: Ash A mount: 5.00 g Units: pg/g Basis: Dry Weight Batch No: X2649 % Solids: 74.05

Compound Conc DL Qual 2005 WHO Tox MDL Compound Conc DL Qual

2,3,7,8-TCDD 216 - 216 0.0414 1,2,3,7,8-PeCDD 470 - 470 0.0563 1,2,3,4,7,8-HxCDD 257 - 25.7 0.0747 1,2,3,6,7,8-HxCDD 239 - 23.9 0.0810 Total TCDD 7830 - 1,2,3,7,8,9-HxCDD 225 - 22.5 0.0748 Total PeCDD 5400 - 1,2,3,4,6,7,8-HpCDD 503 - 5.03 0.138 Total HxCDD 3150 - OCDD 253 - 0.0759 0.248 Total HpCDD 905 -

2,3,7,8-TCDF 1380 - F,* 138 0.0435 1,2,3,7,8-PeCDF 852 - 25.6 0.0608 2,3,4,7,8-PeCDF 1030 - 309 0.0660 1,2,3,4,7,8-HxCDF 352 - 35.2 0.0484 1,2,3,6,7,8-HxCDF 432 - 43.2 0.0487 2,3,4,6,7,8-HxCDF 452 - 45.2 0.0531 1,2,3,7,8,9-HxCDF 114 - 11.4 0.0607 Total TCDF 28100 - D,M,* 1,2,3,4,6,7,8-HpCDF 353 - 3.53 0.0642 Total PeCDF 12800 - D,M 1,2,3,4,7,8,9-HpCDF 55.2 - 0.552 0.0704 Total HxCDF 3880 - OCDF 31.1 - 0.00933 0.151 Total HpCDF 583 -

Internal Standards % Rec QC Limits Qual

13C-2,3,7,8-TCDD 90.0 40.0 - 135 13C-1,2,3,7,8-PeCDD 104 40.0 - 135 13C-1,2,3,4,7,8-HxCDD 92.4 40.0 - 135 13C-1,2,3,6,7,8-HxCDD 95.8 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDD 97.7 40.0 - 135 13C-OCDD 78.9 40.0 - 135

13C-2,3,7,8-TCDF 96.8 40.0 - 135 13C-1,2,3,7,8-PeCDF 110 40.0 - 135 13C-2,3,4,7,8-PeCDF 101 40.0 - 135 13C-1,2,3,4,7,8-HxCDF 103 40.0 - 135 13C-1,2,3,6,7,8-HxCDF 101 40.0 - 135 13C-2,3,4,6,7,8-HxCDF 97.1 40.0 - 135 13C-1,2,3,7,8,9-HxCDF 98.7 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDF 89.9 40.0 - 135 13C-1,2,3,4,7,8,9-HpCDF 128 40.0 - 135 13C-OCDF 90.2 40.0 - 135

Cleanup Surrogate

37Cl-2,3,7,8-TCDD 97.1 50.0 - 150

A nalyst: Reviewed By:

Date: Date: A Isotopic Labeled Standard outside QC range but signal to noise ratio is >10:1 B Analyte is present in Method Blank
C Chemical Interference D Presence of Diphenyl Ethers E Analyte concentration is above calibration range F Analyte confirmation on secondary column J Analyte concentration is below calibration range M Maximum possible concentration ND Analyte Not Detected
NP Not Provided P Pre-filtered through a Whatman 0.7um GF/F filter S Sample acceptance criteria not met
X Matrix interferences * Result taken from dilution or reinjection

9/7/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com 9/10/2012

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## EPA Method 8290 PCDD/F

FAL ID: 7496-003-SA Date Extracted: 09-04-2012 ICal: PCDDFAL3-6-28-12 A cquired: 09-06-2012 Client ID: S3 Date Received: 08-31-2012 GC Column: DB5 2005 WHO TEQ: 1820 Matrix: Ash A mount: 5.05 g Units: pg/g Basis: Dry Weight Batch No: X2649 % Solids: 75.87

Compound Conc DL Qual 2005 WHO Tox MDL Compound Conc DL Qual

2,3,7,8-TCDD 291 - 291 0.0414 1,2,3,7,8-PeCDD 602 - 602 0.0563 1,2,3,4,7,8-HxCDD 354 - 35.4 0.0747 1,2,3,6,7,8-HxCDD 338 - 33.8 0.0810 Total TCDD 13000 - 1,2,3,7,8,9-HxCDD 296 - 29.6 0.0748 Total PeCDD 8290 - 1,2,3,4,6,7,8-HpCDD 731 - 7.31 0.138 Total HxCDD 4620 - OCDD 348 - 0.104 0.248 Total HpCDD 1320 -

2,3,7,8-TCDF 1640 - F,* 164 0.0435 1,2,3,7,8-PeCDF 1120 - 33.6 0.0608 2,3,4,7,8-PeCDF 1410 - 423 0.0660 1,2,3,4,7,8-HxCDF 487 - 48.7 0.0484 1,2,3,6,7,8-HxCDF 596 - 59.6 0.0487 2,3,4,6,7,8-HxCDF 653 - 65.3 0.0531 1,2,3,7,8,9-HxCDF 160 - 16.0 0.0607 Total TCDF 37300 - D,M,* 1,2,3,4,6,7,8-HpCDF 538 - 5.38 0.0642 Total PeCDF 17700 - D,M 1,2,3,4,7,8,9-HpCDF 78.9 - 0.789 0.0704 Total HxCDF 5670 - OCDF 45.2 - 0.0136 0.151 Total HpCDF 856 -

Internal Standards % Rec QC Limits Qual

13C-2,3,7,8-TCDD 83.8 40.0 - 135 13C-1,2,3,7,8-PeCDD 94.9 40.0 - 135 13C-1,2,3,4,7,8-HxCDD 87.9 40.0 - 135 13C-1,2,3,6,7,8-HxCDD 91.2 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDD 84.1 40.0 - 135 13C-OCDD 54.1 40.0 - 135

13C-2,3,7,8-TCDF 92.9 40.0 - 135 13C-1,2,3,7,8-PeCDF 105 40.0 - 135 13C-2,3,4,7,8-PeCDF 94.5 40.0 - 135 13C-1,2,3,4,7,8-HxCDF 108 40.0 - 135 13C-1,2,3,6,7,8-HxCDF 103 40.0 - 135 13C-2,3,4,6,7,8-HxCDF 91.7 40.0 - 135 13C-1,2,3,7,8,9-HxCDF 92.9 40.0 - 135 13C-1,2,3,4,6,7,8-HpCDF 81.9 40.0 - 135 13C-1,2,3,4,7,8,9-HpCDF 117 40.0 - 135 13C-OCDF 67.4 40.0 - 135

Cleanup Surrogate

37Cl-2,3,7,8-TCDD 91.4 50.0 - 150

A nalyst: Reviewed By:

Date: Date: A Isotopic Labeled Standard outside QC range but signal to noise ratio is >10:1 B Analyte is present in Method Blank
C Chemical Interference D Presence of Diphenyl Ethers E Analyte concentration is above calibration range F Analyte confirmation on secondary column J Analyte concentration is below calibration range M Maximum possible concentration ND Analyte Not Detected
NP Not Provided P Pre-filtered through a Whatman 0.7um GF/F filter S Sample acceptance criteria not met
X Matrix interferences * Result taken from dilution or reinjection

9/7/2012

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com 9/10/2012

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## Frontier Analytical Laboratory

Sample Login Form

FAL Project ID: 7496

Client: Chico Environmental Client Project ID:Covanta / Popi

Date Received:08/31/2012
Time Received:10:20 am Received By:KZ Logged In By:KZ # of Samples Received:3 Duplicates:0 Storage Location:R1

Method of Delivery: Fed-Ex Tracking Number: 875842474961 Shipping Container Received Intact Yes Custody seals(s) present? Yes Custody seals(s) intact? Yes Sample Arrival Temperature (C) 10 Cooling Method Blue Ice Chain Of Custody Present? Yes Return Shipping Container To Client Yes
Test for residual Chlorine No Thiosulfate Added No Earliest Sample Hold Time Expiration 09/28/2012 Adequate Sample Volume Yes pH Range N/ A Anomalies or addi tional comments:

Please note that the samples were received at 10 degrees C, which is outside the Method-recommended temperature range of 0-4 de grees C. We will proceed with analysis unless instructed otherwise.

5172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com of 000010 0000095172 Hillsdale Circle * El Dorado Hills, CA 95762 * Tel (916) 934-0900 * Fax (916) 934-0999 * www.frontieranalytical.com of 000010 000010