July 11, 2016 Reference No

Transcription

1 July 11, 2016 Reference No Ms. Christine Aiello Michigan Department of Environmental Quality Permits Section Water Resource Division 525 West Allegan P.O. Box Lansing, MI Transmitted via E mail Dear Ms. Aiello: Re: Response to Comments NPDES Reissuance (Submission #2DM-ZEC4-66B7) Saginaw Nodular Iron, 2100 Veterans Memorial Parkway, The following letter and corresponding attachments has been prepared by GHD on behalf of Revitalizing Auto Communities Environmental Response (RACER) Trust to respond to MDEQ comments received on June 30, 2016 via on RACER Trust/GHD s National Pollutant Discharge Elimination System (NPDES) industrial/commercial application form (reissuance) for RACER s Nodular Industrial Land (Site) in submitted on April 2, The following Attachments are included as part of GHD s responses. Attachment A Redline version of Attachment 1 Narrative Descriptions - outfalls Attachment B Attachment 6 - Additional 2016 Secondary Pond Characterization Attachment C Attachment 7 - Outfall 21 Lowering Correspondence and Approval For ease of review, MDEQ comments are provided below in italics followed by GHD/RACER responses. MDEQ Comment No. 1 Section IC.5. indicates Yes, the discharge will be an increased loading of pollutants to the surface waters of the state. A yes in this section is necessary only if you request authorization for a new or increased use (e.g., increased discharge flow rate, new wastewater type, new receiving water and/or outfall, etc., - basically any change that represents a potential source/quantity of pollution not already addressed in the current permit). Based on the remainder of your application, the correct response in this section would appear to have been No. If you did intend to select yes, please explain what new or increased use you are requesting. For more information about Antidegradation, please see Section IC.5. of the application itself, and the application Appendix available at GHD Services Inc Sheldon Road Suite 200 Plymouth Michigan USA T F W

2 RACER/GHD Response No.1 The response to Section IC.5 will remain as a Yes, as we are requesting that the MDEQ approve possible occasional short-term increases of the discharge rate up to 5 MGD during periods when RACER plans to conduct evaluations on the secondary pond sediments or when RACER plans to conduct remedial activities on the sediments, as necessary. The duration of discharge will be dependent on the activity and will potentially range from weeks to 2-3 months. At this time RACER does not have a schedule for when the sediment evaluations or remedial activities will be completed, however, RACER will notify the MDEQ of any plans for an increased discharge rate prior to discharging at an increased rate. The following modifications have been made to the application: Under Section 5 Rule 98 Antidegradation Requirements, under the heading, Antidegradation Requirements Attachment, the following comment has been included: Attachment 1 - Narrative Descriptions Outfalls has been revised to include a narrative description of the possible shortterm increase in discharge rate. Under Section 10 Water Flow Diagram and Narrative Description, Attachment 1 Narrative Descriptions Outfalls has been revised to include a narrative description of the possible shortterm increase in discharge rate. (See Attachment A for a redline version of Attachment 1, a clean copy of the revised Attachment 1 will be uploaded to the application). MDEQ Comment No. 2 Section IIIB.1.G. for outfall 021 requires that the applicant provide the Maximum Authorized Daily Discharge Flow rate for this outfall. This would be the maximum daily flow rate that you are seeking authorization to discharge from outfall 021. Your current permit authorizes a maximum of 1.63 MGD from outfall 021. Unless you are requesting an increased use (see also comment #2 above), this is the flow rate you would request here. RACER/GHD Response No.2 The application has been modified under Section IIIB.1 G to identify a Maximum Authorized Daily Discharge Flow Rate of 1.63 MGD, as discussed in our call on July 7, In addition, Attachment 1 Narrative Descriptions Outfalls has been revised to include a narrative description of the possible short-term increase in discharge rate. (See Attachment A for a redline version of Attachment 1, a clean copy of the revised Attachment 1 will be uploaded to the application) MDEQ Comment No. 3 The application indicates that the discharge through both outfalls is seasonal (Section IIIB.1.H. for both 021 and 022). Per page 3, item 1.F. of the application Appendix, a facility is considered to have a seasonal discharge if wastewater is treated and stored throughout a portion of the year and then discharged over a specified period or periods of days, weeks, or months. If the discharge does not meet this definition, it is considered a continuous discharge. Please confirm that your facility s discharges through both 021 and 022 are in fact seasonal, or revise the application as needed for continuous discharges Aiello-2 2

3 RACER/GHD Response No.3 Upon further discussion with the MDEQ on July 7, 2016, Outfalls 21 and 22 are considered continuous discharges and not seasonal discharges and as such the following modifications have been made to the application Under Section IIIB. Outfall Information Industrial / Commercial Facilities (1)(Outfall 21), under H. Seasonal Discharge, all information provided has been removed. Under Section IIIB. Outfall Information Industrial / Commercial Facilities (1)(Outfall 21), under I. Continuous Discharge, the following responses were provided to the questions: How often is there a discharge from this outfall (on average)? 24 Hours/Day. How often is there a discharge from this outfall (on average)? 4 Days/Year. Under Section IIIB. Outfall Information Industrial / Commercial Facilities (2)(Outfall 22), under H. Seasonal Discharge, all information provided has been removed. Under Section IIIB. Outfall Information Industrial / Commercial Facilities (2)(Outfall 22), under I. Continuous Discharge, the following responses were provided to the questions: How often is there a discharge from this outfall (on average)? 24 Hours/Day. How often is there a discharge from this outfall (on average)? 3 Days/Year. MDEQ Comment No. 4 Per page 4, item 3 of the Appendix, all applicants are required to report Biochemical Oxygen Demand 5 day (BOD5), Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Total Suspended Solids (TSS), Ammonia as N, Temperature (both summer and winter), and ph. The applicant may, however, request that data reporting for one or more of these required parameters be waived for one or more outfalls; however, such requests shall be supported by adequate rationale. For both outfall 021 and 022, please provide the omitted data, or request a waiver supported by adequate rationale. The data and/or waiver request may be incorporated into the tables under Section IIIB.3. of the application, or they may be submitted as an attachment to the application. RACER/GHD Response No.4 Upon further discussions with the MDEQ on July 7, 2016, the following modifications have been made to the application regarding the required reporting of BOD5, COD, TOC, TSS, Ammonia as N, Temperature, and ph: Under Section IIIB. Outfall Information Industrial / Commercial Facilities (1)(Outfall 21), under Section 3. Effluent Characteristics Conventional Pollutants, a waiver for temperature indicating that the water discharged will be at ambient temperature as there are no processes affecting the temperature of the water has been provided, a waiver for BOD5 indicating that samples are already provided for CBOD5 which is a similar analysis to BOD5, and a note for COD and TOC indicating that samples will be collected, analyzed, and submitted to the MDEQ by the end of July has been included Aiello-2 3

4 Under Section IIIB. Outfall Information Industrial / Commercial Facilities (2)(Outfall 22), under Section 3. Effluent Characteristics Conventional Pollutants, a waiver for CBOD5, BOD5, COD, TOC, Ammonia as N, and temperature indicating that the discharged water does not come in contact with material that would affect these parameters has been provided. In addition, as part of the ed comments provided on June 30, 2016, MDEQ requested that a Facility and an Applicant be provided. The Facility and Applicant will be Dave Favero (RACER Trust). His contact information has already been provided in the application. Lastly, since the submittal of the NPDES industrial/commercial application form (reissuance) on April 2, 2016, RACER conducted additional characterization of the secondary pond and also lowered the discharge pipe for Outfall 21 approximately 5 feet. The application has been revised to include Attachment 6 - Additional 2016 Secondary Pond Characterization (herein attached as Attachment B) and Attachment 7 Outfall 21 Lowering Correspondence and Approval (herein attached as Attachment C). In addition, Attachment 1 Narrative Descriptions Outfalls has been updated to identify that Outfall 21 has been lowered. Please contact me if you would like to discuss this matter further. Yours truly, GHD John-Eric Pardys, P.Eng. JEP/kf/2 cc: David Favero, RACER (via ) Michael Tomka, GHD (via ) Aiello-2 4

5 Attachment A Redline Version of Attachment 1 - Narative Descriptions 0 outfalls GHD Aiello2-TP

6 NARRATIVE DESCRIPTION GENERAL INFORMATION It is noted that as of April 1July 11, 2016, there are efforts in progress to sell the southwest portion of this Site, which has frontage to Veterans Memorial Parkway. This permit renewal application is being submitted based on the assumption that the sale of the property will not be completed. Should that sale of the southwest portion of the Site be completed or should remediation of the sediment be necessary, it is possible that there would be modifications to the drainage area (Secondary Pond) for Outfall 21 and to Outfall 21 itself (see further details below under Proposed Modifications). Should these modifications be desired/necessary, the MDEQ will be kept informed of the proposed plans and RACER will provide supplemental information or prepare a revised NPDES Permit Renewal Application, if necessary. Assuming the sale of the southwest portion of the Site is not completed, RACER obtained MDEQ approval (see Attachment 7) to RACER intends to lower the elevation of the discharge pipe for Outfall 21 by approximately three to five feet,. The discharge pipe was loweredwhich was completed on June 24, An upward facing riser pipe with 1-foot removable sections was installed on the inlet to ensure the If the elevation of the discharge pipe for this outfall is lowered, the water level in the secondary pond will first have to be lowered. Based on communication with MDEQ, RACER understands that formal approval from MDEQ is not required for this activity. However, RACER understands that MDEQ expects the intake, while lowering the water level, will beis located near the surface of the water in the secondary pond (to limit solids in the discharge). As a result of the modification to Outfall 21, previous modifications approved by the MDEQ to the frequency and analysis of sampling were rescinded, which is documented in a letter from the MDEQ provided on June 15, 2016 (see Attachment 7). and all permit required effluent sampling, analyses, and reporting will be performed during lowering of the water level. Lowering the elevation of the discharge pipe would will be documented in the Storm Water Pollution Prevention Plan (SWPPP) and Annual Report. Should that sale of the southwest portion of the Site be completed it is possible that there would be modifications to the drainage area (Secondary Pond) for Outfall 21 and to Outfall 21 itself (see further details below under Proposed Modifications). Should these modifications be desired/necessary, the MDEQ will be kept informed of the proposed plans and RACER will prepare a revised NPDES Permit Renewal Application, if necessary. FIGURE 1 Figure 1 presents the Site Map for the facility. Please note that the treatment plant and associated basins stopped receiving process water in November 2010 and the only water inputs to the Site include storm water that falls on the Site and within the respective outfall drainage basins. There are currently two outfalls that are strictly storm water outfalls and therefore are not included in the current NPDES permit. Please note that details for these two outfalls are included in the SWPPP. These outfalls continue to be strictly storm water outfalls and therefore are not included in this renewal application: - Outfall 20 (to Diekman Drain) Note that the drainage basin for this outfall includes property that is owned by other parties in addition to RACER. - Outfall 23 Drainage pipe that drains the railway ditches to Koehler Drain. Note that the drainage basin for this outfall includes property owned by other parties in addition to RACER. There are currently two outfalls that are included in the existing NPDES permit and are included in this renewal application: Aeillo2-ATT A Page 1 of 2

7 - Outfall 21 - discharge from the secondary pond to unnamed ditch to the north, which flows into the Gage Drain, and ultimately drains to the Saginaw River. - Outfall 22 - located off of RACER property, south of the entrance to Tri-cap, east of Veterans Memorial Parkway, which drains the North Ditch area and outlets to the Saginaw River. Note that the drainage basin for this outfall includes property that is owned by other parties in addition to RACER. PROPOSED MODICATIONS - Outfall 21 RACER is currently evaluating options to remediate sediments in the Secondary Pond, which may affect Outfall 21. Possible modifications to Outfall 21 include: apossible shortterm increasesd of the discharge rate of 5 MGD, lowering the elevation of Outfall 21 again to further lower the water elevation in the Secondary Pond; and constructing a new uncontrolled outfall (upon completion of remedial activities). The short term increases to the discharge rate would possibly occur during periods when RACER plans to conduct evaluations on the secondary pond sediments or when RACER plans to conduct remedial activities on the sediments, as necessary. The duration of the short term increases to the discharge will be dependent on the activity and will potentially range from weeks to 2-3 months. At this time RACER does not have a schedule for when the additional sediment evaluations or remedial activities will be completed. MDEQ will be informed of any proposed modifications to Outfall 21. None at this time. - - Outfall 22 - RACER has obtained MDEQ Water Resources Division Permit ( P) that provides for modifying the drainage in the North Ditch area and the existing inlet from the North Ditch area to the catch basin that provides for discharge to the Saginaw River. The proposed plans involve: removing the standing water in the North Ditch; covering impacted sediments in the North Ditch; installing a new catch basin on RACER property in the North Ditch that would connect via a subsurface pipe to the existing catch basin that provides discharge to the Saginaw River, and grading the ditch so that storm water gravity flows to the new catch basin on RACER property in the North Ditch. Note that RACER is working with the adjacent property owners within the Outfall 22 drainage basin to obtain needed approvals to complete this work. From the remediation perspective, USEPA Region 5 RCRA Corrective Action program also approved the proposed modifications to the North Ditch. A schedule to complete the North Ditch work is to be determined. Following completion of the North Ditch work, RACER proposes to collect samples from three separate discharge events with the intent of demonstrating that storm water continues to meet discharge limits. Pending the receipt and review of the analytical results, RACER would petition the MDEQ to classify Outfall 22 as strictly a storm water outfall and thereby remove the Outfall 22 from the NPDES permit. Upon MDEQ approval of this outfall as strictly a storm water outfall, the modifications would be incorporated into the SWPPP, as well as, an NPDES permit modification request, if necessary Aeillo2-ATT A Page 2 of 2

8 Attachment B Attachment 6 Additional 2016 Secondary Pond Characterization GHD Aiello2-TP

9 SECONDARY POND FIRST AVE. SIXTH STREET EIGHTH STREET WASHINGTON AVENUE NINTH STREET TENTH STREET SMCO PLANT FOURTEENTH STREET PARKING AREA FLOODED AREA FORMER NODULAR IRON PLANT AREA FNDN WASHINGTON AVENUE FNDN FLOODED AREA DIEKMANN ST. CITY OF SAGINAW TOWNSHIP OF BUENA VISTA CROW ISLAND ROAD 1" = 100' I 75 OUTER DRIVE SOURCES: EXISTING GROUND CONTOURS ARE DERIVED FROM: TOPOGRAPHY DRAWING RECEIVED FROM SANBORN (AN AERIAL PHOTOGRAPHY COMPANY) JANUARY 3, STATE PLANE; 2009 SURVEY OF CLAY PILE BY SPICER; 2013 SURVEY OF SAND/CLAY PILES BY WILCOX SURVEY OF SEDIMENT SAMPLES BY NORMANDEAU ASSOICATES, INC. DIECKMAN DRAIN OUTFALL HACK ROAD 586 A ft LEGEND INVESTIGATIVE UNIT BOUNDARY AND IDENTIFIER APPROXIMATE LIMITS OF RACER PROPERTY EXISTING GROUND CONTOUR (NGVD) H10-05 SS-19 SS-22 SS-20 SS-23 SS-21 SED SS SS-25 SS-26 SEDIMENT SAMPLE LOCATION SED SD SS-16 SS-17 H2 SD / SS-18 SD H9-05 SD H SS SS-13 SS-27 SS-28 SS-29 SS CITY OF SAGINAW WASTEWATER TREATMENT PLANT SS-11 SO SD SS-12 SS-14 SS-31 SS SED SS-09 SS-10 SS-05 SS-33 H1 SD SD SS-34 SS-35 SS SED H11-05 SS-08 SD SED SD SS-37 SD SS-38 SS SS SS-06 SED H4 SD SED LAGOON #5 SS-04 SED SS SS FORMER PUMP STATION SD J 594 H3 SS-01 H RIVER I SED SO SAGINAW G E FORMER PRIMARY LAGOONS (NOT IN SERVICE) A C 616 B D F KEY MAP 588 SCALE VERIFICATION 618 THIS BAR MEASURES 1" ON ORIGINAL. ADJUST SCALE ACCORDINGLY. FORMER WASTEWATER TREATMENT PLANT REVITALIZING AUTOMOTIVE COMMUNITY ENVIRONMENTAL RESPONSE SAGINAW, MICHIGAN ADDITIONAL SECONDARY POND POND AND LAGOONS AND CHARACTERIZATION LAGOONS CHARACTERIZATION - SUMMARY OF EXCEEDANCES LOCATIONS 600 Source Reference: MICHIGAN STATE PLANE SOUTH, NAD 83 USING INTERNATIONAL FEET, NGVD 88 TOPO - SANBORN, Project Manager: I.R. Reviewed By: M.T. Date: JULY Scale: 1" = 200' Project N o: T02 Report N o: Drawing N o : MEMO019 figure T02(MEMO02)GN-WA001 MAY 25, 2016

10 600 SECONDARY POND 580 FIRST AVE. SIXTH STREET EIGHTH STREET WASHINGTON AVENUE NINTH STREET TENTH STREET SMCO PLANT FOURTEENTH STREET PARKING AREA FLOODED AREA FORMER NODULAR IRON PLANT AREA FNDN WASHINGTON AVENUE FNDN FLOODED AREA DIEKMANN ST. CITY OF SAGINAW TOWNSHIP OF BUENA VISTA CROW ISLAND ROAD 1" = 150' I 75 OUTER DRIVE DIECKMAN DRAIN CITY OF SAGINAW WASTEWATER TREATMENT PLANT 592 SW MD SD OUTFALL 21 SW MD SD / SW MD SD SW MD SD HACK ROAD ft SW SW SW MD SW MD BD MD SW / MD SD SW MD / SD SW MD SD KOH A LEGEND INVESTIGATIVE UNIT BOUNDARY AND IDENTIFIER APPROXIMATE LIMITS OF RACER PROPERTY EXISTING GROUND CONTOUR (NGVD) POND WATER AND SEDIMENT SAMPLE LOCATION RIVER SW MD SD FORMER PUMP STATION SW MD SD SW MD BD SW MD SD LAGOON #5 SW MD SD SW MD SD WATER SAMPLE LOCATION SW MD BD FORMER PRIMARY LAGOONS (NOT IN SERVICE) FORMER WASTEWATER TREATMENT PLANT J RIVER H I C A SAGINAW E G 594 B D F KEY MAP OUTER DRIVE SCALE VERIFICATION THIS BAR MEASURES 1" ON ORIGINAL. ADJUST SCALE ACCORDINGLY. REVITALIZING AUTOMOTIVE COMMUNITY ENVIRONMENTAL RESPONSE SAGINAW, MICHIGAN POND WATER SAMPLE AND SEDIMENT LOCATIONS SAMPLE LOCATIONS SOURCES: EXISTING GROUND CONTOURS ARE DERIVED FROM: TOPOGRAPHY DRAWING RECEIVED FROM SANBORN (AN AERIAL PHOTOGRAPHY COMPANY) JANUARY 3, STATE PLANE; 2009 SURVEY OF CLAY PILE BY SPICER; 2013 SURVEY OF SAND/CLAY PILES BY WILCOX. Source Reference: MICHIGAN STATE PLANE SOUTH, NAD 83 USING INTERNATIONAL FEET, NGVD 88 TOPO - SANBORN, 1996 Project Manager: Scale: I.R. 1" = 200' Reviewed By: Project N o: M.T. Date: Report N o: JULY 2016 Drawing N o : T02 MEMO018 figure T02(MEMO018)GN-WA002 APR 15, 2016

11 Page 1 of 36 SED SED SED SED SED SED SED SED SED S SSH-1628 S SSH-1630 S SSH-1629 S SSH-1640 S SSH-1639 S SSH-1638 S SSH-1627 S SSH-1625 S SSH /17/2016 3/17/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 3/17/2016 3/17/ VOAs a b c d 1,1,1-Trichloroethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,1,2,2-Tetrachloroethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,1,2-Trichloroethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,1-Dichloroethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,1-Dichloroethene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,2,4-Trichlorobenzene mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U 1,2-Dibromo-3-chloropropane (DBCP) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U 1,2-Dibromoethane (Ethylene dibromide) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U 1,2-Dichlorobenzene mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U 1,2-Dichloroethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,2-Dichloropropane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U 1,3-Dichlorobenzene mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U 1,4-Dichlorobenzene mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U 2-Butanone (Methyl ethyl ketone) (MEK) mg/kg U 2.2 U 3 U 5 U 1.3 U 1.7 U 2.4 U 2 U 3.4 U 2-Hexanone mg/kg U 7.4 U 10 U 17 U 4.2 U 5.5 U 8.2 U 6.8 U 11 U 4-Methyl-2-pentanone mg/kg U 7.4 U 10 U 17 U 4.2 U 5.5 U 8.2 U 6.8 U 11 U (Methyl isobutyl ketone) (MIBK) Acetone mg/kg U 2.2 U 3 U 5 U 1.3 U 1.7 U 2.4 U 2 U 3.4 U Benzene mg/kg U 0.33 U U 0.11 U 0.16 U U Bromodichloromethane mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U Bromoform mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U Bromomethane (Methyl bromide) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Carbon disulfide mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Carbon tetrachloride mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Chlorobenzene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Chloroethane mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Chloroform (Trichloromethane) mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Chloromethane (Methyl chloride) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U cis-1,2-dichloroethene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U cis-1,3-dichloropropene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Cyclohexane mg/kg U 3.5 U 4.8 U 7.9 U 2 U 2.6 U 3.9 U 3.2 U 5.4 U Dibromochloromethane mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Dichlorodifluoromethane (CFC-12) mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U Ethylbenzene mg/kg U 0.2 U 0.33 U U 0.11 U 0.16 U U Isopropyl benzene mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Methyl acetate mg/kg U 3.5 U 4.8 U 7.9 U 2 U 2.6 U 3.9 U 3.2 U 5.4 U Methyl cyclohexane mg/kg U 3.5 U 4.8 U 7.9 U 2 U 2.6 U 3.9 U 3.2 U 5.4 U Methyl tert butyl ether (MTBE) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Methylene chloride mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Styrene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Tetrachloroethene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Toluene mg/kg U 0.66 U 0.17 U 0.22 U 0.33 U U trans-1,2-dichloroethene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U trans-1,3-dichloropropene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Trichloroethene mg/kg U 0.15 U 0.2 U 0.33 U U 0.11 U 0.16 U 0.14 U 0.22 U Trichlorofluoromethane (CFC-11) mg/kg U 0.29 U 0.4 U 0.66 U 0.17 U 0.22 U 0.33 U 0.27 U 0.45 U Trifluorotrichloroethane (CFC-113) mg/kg U 0.74 U 1 U 1.7 U 0.42 U 0.55 U 0.82 U 0.68 U 1.1 U Vinyl chloride mg/kg U 0.12 U 0.16 U 0.26 U U U 0.13 U 0.11 U 0.18 U Xylenes (total) mg/kg U 0.44 U 0.6 U 0.99 U 0.25 U 0.33 U 0.49 U 0.41 U 0.67 U SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2,4,6-Trichlorophenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2,4-Dichlorophenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2,4-Dimethylphenol mg/kg U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2,4-Dinitrophenol mg/kg U 3.4 U 1.2 U 0.67 U 0.84 U 0.28 U 1.4 U 0.31 U 0.8 U 2,4-Dinitrotoluene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2,6-Dinitrotoluene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2-Chloronaphthalene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2-Chlorophenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 2-Methylnaphthalene mg/kg U 5.9 U U 1.5 U 0.49 U 2.4 U Methylphenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U 2-Nitroaniline mg/kg U 4.5 U 1.6 U 0.9 U 1.1 U 0.37 U 1.8 U 0.41 U 1.1 U 2-Nitrophenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 3&4-Methylphenol mg/kg b 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U 3,3'-Dichlorobenzidine mg/kg U 36 U 12 U 7.2 U 8.9 U 3 U 15 U 3.3 U 8.5 U 3-Nitroaniline mg/kg U 4.5 U 1.6 U 0.9 U 1.1 U 0.37 U 1.8 U 0.41 U 1.1 U 4,6-Dinitro-2-methylphenol mg/kg U 3.4 U 1.2 U 0.67 U 0.84 U 0.28 U 1.4 U 0.31 U 0.8 U 4-Bromophenyl phenyl ether mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 4-Chloro-3-methylphenol mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U

12 Page 2 of 36 SED SED SED SED SED SED SED SED SED S SSH-1628 S SSH-1630 S SSH-1629 S SSH-1640 S SSH-1639 S SSH-1638 S SSH-1627 S SSH-1625 S SSH /17/2016 3/17/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 3/17/2016 3/17/ SVOAs (cont'd) 4-Chloroaniline mg/kg U 4.5 U 1.6 U 0.9 U 1.1 U 0.37 U 1.8 U 0.41 U 1.1 U 4-Chlorophenyl phenyl ether mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U 4-Nitroaniline mg/kg U 4.5 U 1.6 U 0.9 U 1.1 U 0.37 U 1.8 U 0.41 U 1.1 U 4-Nitrophenol mg/kg U 7.4 U 2.6 U 1.5 U 1.8 U 0.61 U 3 U 0.67 U 1.8 U Acenaphthene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Acenaphthylene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Acetophenone mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Anthracene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Atrazine mg/kg U 0.9 U 0.31 U 0.18 U 0.22 U U 0.37 U U 0.21 U Benzaldehyde mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Benzo(a)anthracene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Benzo(a)pyrene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Benzo(b)fluoranthene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Benzo(g,h,i)perylene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Benzo(k)fluoranthene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Biphenyl (1,1-Biphenyl) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U bis(2-chloroethoxy)methane mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U bis(2-chloroethyl)ether mg/kg U 1.8 U 0.62 U 0.36 U 0.45 U 0.15 U 0.73 U 0.16 U 0.43 U bis(2-ethylhexyl)phthalate (DEHP) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U Butyl benzylphthalate (BBP) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Caprolactam mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Carbazole mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Chrysene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Dibenz(a,h)anthracene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Dibenzofuran mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Diethyl phthalate mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Dimethyl phthalate mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Di-n-butylphthalate (DBP) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Di-n-octyl phthalate (DnOP) mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Fluoranthene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U Fluorene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U Hexachlorobenzene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Hexachlorobutadiene mg/kg U 0.9 U 0.31 U 0.18 U 0.22 U U 0.37 U U 0.21 U Hexachlorocyclopentadiene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Hexachloroethane mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Indeno(1,2,3-cd)pyrene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Isophorone mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Naphthalene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 1 b 1.4 U Nitrobenzene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U N-Nitrosodi-n-propylamine mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U N-Nitrosodiphenylamine mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U 0.54 U 1.4 U Pentachlorophenol mg/kg U 3.4 U 1.2 U 0.67 U 0.84 U 0.28 U 1.4 U 0.31 U 0.8 U Phenanthrene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U Phenol mg/kg b 11 b U 1.5 U 0.49 U 2.4 U U Pyrene mg/kg U 5.9 U 2 U 1.2 U 1.5 U 0.49 U 2.4 U U Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg U 3.1 UF U 3.0 U 2.0 Barium mg/kg Beryllium mg/kg Cadmium mg/kg b 7.1 b 8.9 b b 5.0 b 7.1 b Calcium mg/kg - - Chromium mg/kg B 72 B 70 B 72 B 97 B 90 B Cobalt mg/kg Copper mg/kg U 1.5 UF1F2 1.9 U F1 b U U Iron mg/kg Lead mg/kg d 790 d 710 d cd 510 d 760 d Magnesium mg/kg Manganese mg/kg Mercury mg/kg U U U U U U U U U Nickel mg/kg Potassium mg/kg - - Selenium mg/kg Silver mg/kg U 1.5 UF1 1.9 U 3.4 U 1.5 U 2.2 U Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg b 7200 b 8000 b b b 3600 b 7700 b

13 Page 3 of 36 SED SED SED SED SED SED SED SED SED S SSH-1628 S SSH-1630 S SSH-1629 S SSH-1640 S SSH-1639 S SSH-1638 S SSH-1627 S SSH-1625 S SSH /17/2016 3/17/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 3/17/2016 3/17/ MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none PCBs Aroclor-1016 (PCB-1016) mg/kg U U U 0.15 U U U 1.5 U U U Aroclor-1221 (PCB-1221) mg/kg U U U 0.15 U U U 1.5 U U U Aroclor-1232 (PCB-1232) mg/kg U U U 0.15 U U U 1.5 U U U Aroclor-1242 (PCB-1242) mg/kg U bd Aroclor-1248 (PCB-1248) mg/kg U U U 0.15 U U U 1.5 U U U Aroclor-1254 (PCB-1254) mg/kg U U U 0.15 U U 1.5 U Aroclor-1260 (PCB-1260) mg/kg U U U 0.15 U U U 1.5 U U U Total PCBs mg/kg U bd Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg b 110 b 120 b 25 b 46 b 13 F2 b 97 b 84 b 64 b Sulfide mg/kg F Total organic carbon (TOC) mg/kg - - Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

14 Page 4 of 36 SO SO SS-01 SS-01 SS-02 SS-02 SS-03 SS-04 SS-04 S SSH-1642 S SSH-1641 S SSH-SS1A S SSH-SS1B S SSH-SS2A S SSH-SS2B S SSH-SS3A S SSH-SS4A S SSH-SS4B 3/24/2016 3/24/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/ (0-12) In BGS (12-23) In BGS (0-8) In BGS (8-24) In BGS (3-20) In BGS (0-12) In BGS (12-22) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg U U U U U U U U U U U 0.3 U U 0.3 U U 0.3 U U 0.12 U U U U U U 0.12 U U 0.12 U U 0.89 U U 3 U U 3 U U 0.89 U U U 0.12 U U 0.12 U U 0.3 U U 0.3 U U U U U U 0.3 U U U U 0.3 U U U U U U 1.4 U U U U 0.12 U U U 0.3 U U 1.4 U U 1.4 U U 0.3 U U 0.3 U U U U U U U U U U U U U 0.12 U U 0.3 U U U U 0.18 U - SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.19 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.25 U U 0.33 U U 0.33 U - 27 U 2 U U 0.25 U U 0.19 U U 0.33 U U 0.33 U -

15 Page 5 of 36 SO SO SS-01 SS-01 SS-02 SS-02 SS-03 SS-04 SS-04 S SSH-1642 S SSH-1641 S SSH-SS1A S SSH-SS1B S SSH-SS2A S SSH-SS2B S SSH-SS3A S SSH-SS4A S SSH-SS4B 3/24/2016 3/24/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/ (0-12) In BGS (12-23) In BGS (0-8) In BGS (8-24) In BGS (3-20) In BGS (0-12) In BGS (12-22) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg U 0.25 U U 0.33 U U 0.25 U U 0.41 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.05 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.1 U U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.05 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.33 U U 0.19 U U 0.33 U U 0.33 U U 0.33 U - Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg U bd U B 16 B B 30 B 11 B d d b b 610 b U U U U U U U U b 2.1 b b 2.2 b 1.9 b U U b U U b b 340 b 180 b

16 Page 6 of 36 SO SO SS-01 SS-01 SS-02 SS-02 SS-03 SS-04 SS-04 S SSH-1642 S SSH-1641 S SSH-SS1A S SSH-SS1B S SSH-SS2A S SSH-SS2B S SSH-SS3A S SSH-SS4A S SSH-SS4B 3/24/2016 3/24/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/ (0-12) In BGS (12-23) In BGS (0-8) In BGS (8-24) In BGS (3-20) In BGS (0-12) In BGS (12-22) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none NC - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U U U U U U 0.06 U U 0.04 U 0.85 U U U U U U 0.06 U U 0.04 U 0.85 U U U U U U 0.06 U U 0.04 U 3.6 b U U U U U 0.04 U 0.85 U U U U U U 0.04 U 0.85 U U U U U U 0.06 U U 0.04 U 0.85 U U U U U U U 0.04 U 3.6 b U U U 0.04 U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b 160 b b 150 b 140 b U 0.55 U U 1.1 b 0.56 U 52 b 3.6 b 3.2 b 2.4 U b 4.5 U 2.4 U U Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

17 Page 7 of 36 SS-05 SS-06 SS-06 SS-07 SS-07 SS-08 SS-08 SS-09 SS-09 S SSH-SS5A S SSH-SS06A S SSH-SS06B S SSH-SS07A S SSH-SS07B S SSH-SS08A S SSH-SS08B S SSH-SS09A S SSH-SS09B 5/5/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (11-18) In BGS (0-21) In BGS (21-30) In BGS (0-8) In BGS (8-57) In BGS (0-13) In BGS (13-27) In BGS (0-10) In BGS (10-37) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

18 Page 8 of 36 SS-05 SS-06 SS-06 SS-07 SS-07 SS-08 SS-08 SS-09 SS-09 S SSH-SS5A S SSH-SS06A S SSH-SS06B S SSH-SS07A S SSH-SS07B S SSH-SS08A S SSH-SS08B S SSH-SS09A S SSH-SS09B 5/5/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (11-18) In BGS (0-21) In BGS (21-30) In BGS (0-8) In BGS (8-57) In BGS (0-13) In BGS (13-27) In BGS (0-10) In BGS (10-37) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg bd bd 13 bd bd 12 bd F1 b b 5.3 b F b b 17 B 350 b b 100 b b cd d 780 d d b 4400 b 1000 b 6300 b 6800 b b 3800 b U 0.13 U U 0.33 b U U U b 20 b 2.5 b 7.6 b 7.4 b b 6.8 b b b 2.5 b b B 350 B 1200 B 1200 B B 1200 B b b b 340 b 3900 b 3300 b b 3100 b

19 Page 9 of 36 SS-05 SS-06 SS-06 SS-07 SS-07 SS-08 SS-08 SS-09 SS-09 S SSH-SS5A S SSH-SS06A S SSH-SS06B S SSH-SS07A S SSH-SS07B S SSH-SS08A S SSH-SS08B S SSH-SS09A S SSH-SS09B 5/5/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (11-18) In BGS (0-21) In BGS (21-30) In BGS (0-8) In BGS (8-57) In BGS (0-13) In BGS (13-27) In BGS (0-10) In BGS (10-37) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 1.1 U U 0.69 U 0.33 U U 0.04 U 0.89 U U U 1.1 U U 0.69 U 0.33 U U 0.04 U 0.89 U U U 1.1 U U 0.69 U 0.33 U U 0.04 U 0.89 U U U 1.1 U b 2.9 b U 0.89 U U U 0.69 U 0.33 U U 0.04 U 0.89 U U U 1.1 U U U 0.04 U 0.89 U U 1.1 U U 0.69 U 0.33 U U 0.04 U 0.89 U U U b 3.52 b U 0.89 U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b 720 b 120 b 230 b 95 U b 97 U 0.65 U 8.2 U 0.62 U 1.7 b 1.4 b U 1.0 U 3.0 b 50 b 4.1 b 83 b 57 b b 91 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

20 Page 10 of 36 SS-10 SS-10 SS-11 SS-11 SS-12 SS-12 SS-13 SS-13 S SSH-SS10A S SSH-SS10B S SSH-SS11A S SSH-SS11B S SSH-SS12A S SSH-SS12B S SSH-SS13A S SSH-SS13B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (0-13) In BGS (13-58) In BGS (0-26) In BGS (26-34) In BGS (0-12) In BGS (12-44) In BGS (0-30) In BGS (30-54) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

21 Page 11 of 36 SS-10 SS-10 SS-11 SS-11 SS-12 SS-12 SS-13 SS-13 S SSH-SS10A S SSH-SS10B S SSH-SS11A S SSH-SS11B S SSH-SS12A S SSH-SS12B S SSH-SS13A S SSH-SS13B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (0-13) In BGS (13-58) In BGS (0-26) In BGS (26-34) In BGS (0-12) In BGS (12-44) In BGS (0-30) In BGS (30-54) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg b 7.0 b 18 bd bd 11 bd b b b b b b b 78 b d cd b 2900 b 7800 b 540 b b 4000 b U U 0.12 U U U U U b 4.2 b 10 b 3.2 b b 6.0 b b b 1.1 b 440 B 930 B 1000 B 230 B B 930 B b 1200 b 8100 b 1500 b b 2100 b

22 Page 12 of 36 SS-10 SS-10 SS-11 SS-11 SS-12 SS-12 SS-13 SS-13 S SSH-SS10A S SSH-SS10B S SSH-SS11A S SSH-SS11B S SSH-SS12A S SSH-SS12B S SSH-SS13A S SSH-SS13B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 (0-13) In BGS (13-58) In BGS (0-26) In BGS (26-34) In BGS (0-12) In BGS (12-44) In BGS (0-30) In BGS (30-54) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U U 0.49 U 0.22 U 1.2 U 12 U 0.68 U 0.61 U U U 0.49 U 0.22 U 1.2 U 12 U 0.68 U 0.61 U U U 0.49 U 0.22 U 1.2 U 12 U 0.68 U 0.61 U b U 39 bcd 0.68 U 3.2 b U U 0.49 U 0.22 U 1.2 U 12 U 2.6 b 0.61 U U U 1.2 U 12 U 0.68 U 0.61 U U U 0.49 U 0.22 U 1.2 U 12 U 0.68 U 0.61 U b U 39 bcd 2.6 b 3.2 b Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg - 84 U 82 U 480 b 74 b b 91 U 0.87 U 0.88 U 13 bd 0.66 U U 1.9 b 30 b 75 b 98 b 8.3 b b 68 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

23 Page 13 of 36 VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SS-14 SS-14 SS-14 SS-14 SS-15 SS-15 SS-16 SS-16 S SSH-SS14A S SSH-SS14B S SSH-SS14C S SSH-SS14D S SSH-SS15A S SSH-SS15B S SSH-SS16A S SSH-SS16B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/4/2016 5/4/2016 (0-25) In BGS (25-45) In BGS (45-57) In BGS (45-57) In BGS (0-27) In BGS (27-34) In BGS (0-17) In BGS (26-41) In BGS (Duplicate) SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

24 Page 14 of 36 SVOAs (cont'd) SS-14 SS-14 SS-14 SS-14 SS-15 SS-15 SS-16 SS-16 S SSH-SS14A S SSH-SS14B S SSH-SS14C S SSH-SS14D S SSH-SS15A S SSH-SS15B S SSH-SS16A S SSH-SS16B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/4/2016 5/4/2016 (0-25) In BGS (25-45) In BGS (45-57) In BGS (45-57) In BGS (0-27) In BGS (27-34) In BGS (0-17) In BGS (26-41) In BGS (Duplicate) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg bd 20 bd b b b 140 b d b 9400 b U 0.13 U b 12 b b 3.0 b B 1200 B b 3100 b - -

25 Page 15 of 36 MetalsSEM SS-14 SS-14 SS-14 SS-14 SS-15 SS-15 SS-16 SS-16 S SSH-SS14A S SSH-SS14B S SSH-SS14C S SSH-SS14D S SSH-SS15A S SSH-SS15B S SSH-SS16A S SSH-SS16B 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/3/2016 5/4/2016 5/4/2016 (0-25) In BGS (25-45) In BGS (45-57) In BGS (45-57) In BGS (0-27) In BGS (27-34) In BGS (0-17) In BGS (26-41) In BGS (Duplicate) Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 0.48 U 0.44 U 0.45 U 12 U 4.6 U 0.53 U 5.4 U 0.48 U 0.48 U 0.44 U 0.45 U 12 U 4.6 U 0.53 U 5.4 U 0.48 U 0.48 U 0.44 U 0.45 U 12 U 4.6 U 0.53 U 5.4 U 2.2 P b 1.8 b 1.5 b 1.7 b 56 bcd 42 bcd 0.53 U 5.4 U 0.48 U 0.48 U 0.44 U 0.45 U 12 U 4.6 U 1.1 b 38 bcd 0.48 U 0.48 U 0.44 U 0.45 U 12 U 6 bd 0.53 U 5.4 U 0.48 U 0.48 U 0.44 U 0.45 U 12 U 4.6 U 0.53 U 5.4 U 2.2 P b 1.8 b 1.5 b 1.7 b 56 bcd 48 bcd 1.1 b 38 bcd Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b 370 b b 1.4 b b 71 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

26 Page 16 of 36 SS-17 SS-17 SS-18 SS-18 SS-18 SS-19 SS-19 SS-19 S SSH-SS17A S SSH-SS17B S SSH-SS18A S SSH-SS18B S SSH-SS18C S SSH-SS19A S SSH-SS19B S SSH-SS19C 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-16) In BGS (16-32) In BGS (10-20) In BGS (20-55) In BGS (55-59) In BGS (4-10) In BGS (10-56) In BGS (56-58) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

27 Page 17 of 36 SS-17 SS-17 SS-18 SS-18 SS-18 SS-19 SS-19 SS-19 S SSH-SS17A S SSH-SS17B S SSH-SS18A S SSH-SS18B S SSH-SS18C S SSH-SS19A S SSH-SS19B S SSH-SS19C 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-16) In BGS (16-32) In BGS (10-20) In BGS (20-55) In BGS (55-59) In BGS (4-10) In BGS (10-56) In BGS (56-58) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg

28 Page 18 of 36 SS-17 SS-17 SS-18 SS-18 SS-18 SS-19 SS-19 SS-19 S SSH-SS17A S SSH-SS17B S SSH-SS18A S SSH-SS18B S SSH-SS18C S SSH-SS19A S SSH-SS19B S SSH-SS19C 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-16) In BGS (16-32) In BGS (10-20) In BGS (20-55) In BGS (55-59) In BGS (4-10) In BGS (10-56) In BGS (56-58) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 0.64 U 1.8 U 0.35 U U 7.1 U 12 U 0.21 U 0.53 U 0.64 U 1.8 U 0.35 U U 7.1 U 12 U 0.21 U 0.53 U 0.64 U 1.8 U 0.35 U U 7.1 U 12 U 0.21 U 0.53 U 0.64 U 1.8 U 0.35 U U 27 bcd 110 bcd b 2.1 b 13 bd 1.4 b U 12 U 0.21 U 0.53 U 0.64 U 1.8 U 0.35 U U 7.1 U 12 U 0.21 U 0.53 U 0.64 U 1.8 U 0.35 U U 7.1 U 12 U 0.21 U 2.1 b 2.1 b 13 bd 1.4 b bcd 110 bcd 0.59 Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg - Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

29 Page 19 of 36 SS-20 SS-20 SS-21 SS-21 SS-21 SS-22 SS-22 SS-23 S SSH-SS20A S SSH-SS20B S SSH-SS21A S SSH-SS21B S SSH-SS21C S SSH-SS22A S SSH-SS22B S SSH-SS23A 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-21) In BGS (21-33) In BGS (2-12) In BGS (12-30) In BGS (30-39) In BGS (0-6) In BGS (6-58) In BGS (0-30) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

30 Page 20 of 36 SS-20 SS-20 SS-21 SS-21 SS-21 SS-22 SS-22 SS-23 S SSH-SS20A S SSH-SS20B S SSH-SS21A S SSH-SS21B S SSH-SS21C S SSH-SS22A S SSH-SS22B S SSH-SS23A 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-21) In BGS (21-33) In BGS (2-12) In BGS (12-30) In BGS (30-39) In BGS (0-6) In BGS (6-58) In BGS (0-30) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg F U 20 bd 9.8 bd b b F F b 190 F1 b b cd cd b 2600 b b 0.14 UF U U b 4.3 b b 3.4 b B 500 B B U F2 bd 920 b b

31 Page 21 of 36 SS-20 SS-20 SS-21 SS-21 SS-21 SS-22 SS-22 SS-23 S SSH-SS20A S SSH-SS20B S SSH-SS21A S SSH-SS21B S SSH-SS21C S SSH-SS22A S SSH-SS22B S SSH-SS23A 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 5/4/2016 (0-21) In BGS (21-33) In BGS (2-12) In BGS (12-30) In BGS (30-39) In BGS (0-6) In BGS (6-58) In BGS (0-30) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 0.9 U 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 0.67 U 0.9 U 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 0.67 U 0.9 U 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 0.67 U 4.4 bd 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 1.3 b 0.9 U 3.2 b 1.4 b b 1.6 b 1.6 b 0.67 U 0.9 U 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 0.67 U 0.9 U 2.2 U 0.54 U 0.04 U 0.78 U 0.66 U 0.66 U 1.3 b 4.4 bd 3.2 b 1.4 b b 1.6 b 1.6 b Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b 150 b b 18 F2 bd 0.70 U bd 140 b 6.7 b b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

32 Page 22 of 36 SS-23 SS-24 SS-24 SS-25 SS-26 SS-27 SS-27 SS-27 S SSH-SS23B S SSH-SS24A S SSH-SS24B S SSH-SS25A S SSH-SS26A S SSH-SS27A S SSH-SS27B S SSH-SS27C 5/4/2016 5/4/2016 5/4/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (30-42) In BGS (0-32) In BGS (32-34) In BGS (0-26) In BGS (0-28) In BGS (14-37) In BGS (37-53) In BGS (53-59) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

33 Page 23 of 36 SS-23 SS-24 SS-24 SS-25 SS-26 SS-27 SS-27 SS-27 S SSH-SS23B S SSH-SS24A S SSH-SS24B S SSH-SS25A S SSH-SS26A S SSH-SS27A S SSH-SS27B S SSH-SS27C 5/4/2016 5/4/2016 5/4/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (30-42) In BGS (0-32) In BGS (32-34) In BGS (0-26) In BGS (0-28) In BGS (14-37) In BGS (37-53) In BGS (53-59) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg bd 11 bd 9.2 bd 19 bd 28 bd 18 bd 16 bd b b 12 b 11 b 6.6 b b 6.9 b b B b 230 B b 160 B b 120 B b 17 B cd cd 1400 cd 1100 cd 710 d b 3800 b b 6700 b 4800 b 6500 b U 0.11 U U 0.10 U 0.18 U 0.13 U 0.17 b U b 6.6 b 3.7 b 8.7 b 11 b 7.0 b 7.6 b 2.5 b 1.3 b b 2.6 b 3.2 b 3.0 b 2.3 b B 960 B 190 B b b b b b b 110

34 Page 24 of 36 SS-23 SS-24 SS-24 SS-25 SS-26 SS-27 SS-27 SS-27 S SSH-SS23B S SSH-SS24A S SSH-SS24B S SSH-SS25A S SSH-SS26A S SSH-SS27A S SSH-SS27B S SSH-SS27C 5/4/2016 5/4/2016 5/4/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (30-42) In BGS (0-32) In BGS (32-34) In BGS (0-26) In BGS (0-28) In BGS (14-37) In BGS (37-53) In BGS (53-59) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 0.5 U U U 0.14 U 0.11 U 0.9 U UF U 0.5 U U U 0.14 U 0.11 U 0.9 U U U 0.5 U U U 0.14 U 0.11 U 0.9 U U U U U 3.7 b U U U 0.14 U 1.6 b 0.9 U U U 0.5 U U U 0.11 U 0.9 U U U 0.5 U U U 0.14 U 0.11 U 0.9 U UF U b 3.7 b Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg - 96 b 330 b 82 b 700 b 1000 b 860 b 660 b 190 b 0.72 U 13 bd 0.58 U 42 bd 55 bd 26 bd 4.5 b 1.2 U 6.7 b 130 b 2.5 U 53 F1 b 78 b 66 b 70 b 3.1 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

35 Page 25 of 36 VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SS-28 SS-28 SS-28 SS-29 SS-29 SS-30 SS-31 SS-31 S SSH-SS28A S SSH-SS28B S SSH-SS28C S SSH-SS29A S SSH-SS29B S SSH-SS30A S SSH-SS31A S SSH-SS31B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (10-54) In BGS (10-54) In BGS (54-56) In BGS (0-32) In BGS (32-34) In BGS (0-24) In BGS (0-40) In BGS (40-42) In BGS (Duplicate) SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

36 Page 26 of 36 SVOAs (cont'd) SS-28 SS-28 SS-28 SS-29 SS-29 SS-30 SS-31 SS-31 S SSH-SS28A S SSH-SS28B S SSH-SS28C S SSH-SS29A S SSH-SS29B S SSH-SS30A S SSH-SS31A S SSH-SS31B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (10-54) In BGS (10-54) In BGS (54-56) In BGS (0-32) In BGS (32-34) In BGS (0-24) In BGS (0-40) In BGS (40-42) In BGS (Duplicate) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg U bd 17 bd bd - 18 bd b 8.8 b b - 12 b b B b 160 B b 14 B 120 B b B b d 1200 cd d d b 5200 b b b U 0.14 U U U b 6.9 b 2.5 b 7.8 b b b 2.6 b U 3.2 b b b b b b - -

37 Page 27 of 36 MetalsSEM SS-28 SS-28 SS-28 SS-29 SS-29 SS-30 SS-31 SS-31 S SSH-SS28A S SSH-SS28B S SSH-SS28C S SSH-SS29A S SSH-SS29B S SSH-SS30A S SSH-SS31A S SSH-SS31B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 (10-54) In BGS (10-54) In BGS (54-56) In BGS (0-32) In BGS (32-34) In BGS (0-24) In BGS (0-40) In BGS (40-42) In BGS (Duplicate) Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U 0.1 U U U U 0.12 U 0.11 U 0.04 U 0.1 U 0.1 U U U U 0.12 U 0.11 U 0.04 U 0.1 U 0.1 U U U U 0.12 U 0.11 U 0.04 U U U 0.1 U 0.1 U U U U 0.12 U 0.11 U 0.04 U U U U 0.1 U 0.1 U U U U 0.12 U 0.11 U 0.04 U U U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b 700 b 200 b 370 b b bd 3.2 U 0.63 U 16 bd - 26 bd b 42 b 3.3 b 72 b b - - Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

38 Page 28 of 36 VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SS-32 SS-32 SS-32 SS-32 SS-33 SS-33 SS-34 SS-34 S SSH-SS32A S SSH-SS32B S SSH-SS32C S SSH-SS32D S SSH-SS33A S SSH-SS33B S SSH-SS34A S SSH-SS34B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/6/2016 5/6/2016 (0-16) In BGS (16-40) In BGS (16-40) In BGS (40-42) In BGS (0-10) In BGS (10-36) In BGS (12-40) In BGS (40-42) In BGS (Duplicate) SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

39 Page 29 of 36 SVOAs (cont'd) SS-32 SS-32 SS-32 SS-32 SS-33 SS-33 SS-34 SS-34 S SSH-SS32A S SSH-SS32B S SSH-SS32C S SSH-SS32D S SSH-SS33A S SSH-SS33B S SSH-SS34A S SSH-SS34B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/6/2016 5/6/2016 (0-16) In BGS (16-40) In BGS (16-40) In BGS (40-42) In BGS (0-10) In BGS (10-36) In BGS (12-40) In BGS (40-42) In BGS (Duplicate) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg bd b b B b cd b b b b b -

40 Page 30 of 36 MetalsSEM SS-32 SS-32 SS-32 SS-32 SS-33 SS-33 SS-34 SS-34 S SSH-SS32A S SSH-SS32B S SSH-SS32C S SSH-SS32D S SSH-SS33A S SSH-SS33B S SSH-SS34A S SSH-SS34B 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/5/2016 5/6/2016 5/6/2016 (0-16) In BGS (16-40) In BGS (16-40) In BGS (40-42) In BGS (0-10) In BGS (10-36) In BGS (12-40) In BGS (40-42) In BGS (Duplicate) Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U U 0.1 U U 0.2 U U 0.12 U 0.04 U 0.18 U U 0.1 U U 0.2 U U 0.12 U 0.04 U 0.18 U U 0.1 U U 0.2 U U 0.12 U 0.04 U U U U U 0.18 U U U U 0.04 U U U 0.2 U U 0.12 U 0.04 U 0.18 U U 0.1 U U 0.2 U U 0.12 U 0.04 U U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b - 28 bd - 53 b - Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

41 Page 31 of 36 SS-35 SS-35 SS-36 SS-36 SS-37 SS-37 SS-37 SS-38 S SSH-SS35A S SSH-SS35B S SSH-SS36A S SSH-SS36B S SSH-SS37A S SSH-SS37B S SSH-SS37C S SSH-SS38A 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 (14-42) In BGS (42-44) In BGS (3-52) In BGS (52-54) In BGS (8-24) In BGS (24-45) In BGS (45-47) In BGS (10-56) In BGS VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

42 Page 32 of 36 SS-35 SS-35 SS-36 SS-36 SS-37 SS-37 SS-37 SS-38 S SSH-SS35A S SSH-SS35B S SSH-SS36A S SSH-SS36B S SSH-SS37A S SSH-SS37B S SSH-SS37C S SSH-SS38A 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 (14-42) In BGS (42-44) In BGS (3-52) In BGS (52-54) In BGS (8-24) In BGS (24-45) In BGS (45-47) In BGS (10-56) In BGS SVOAs (cont'd) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg F bd - 19 bd bd - 17 bd b b b - 12 b F b b b 120 B b b b b d d d d b b b b 0.11 U b U U b b b b 3.6 b b b b b b b b

43 Page 33 of 36 SS-35 SS-35 SS-36 SS-36 SS-37 SS-37 SS-37 SS-38 S SSH-SS35A S SSH-SS35B S SSH-SS36A S SSH-SS36B S SSH-SS37A S SSH-SS37B S SSH-SS37C S SSH-SS38A 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 5/6/2016 (14-42) In BGS (42-44) In BGS (3-52) In BGS (52-54) In BGS (8-24) In BGS (24-45) In BGS (45-47) In BGS (10-56) In BGS MetalsSEM Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U U U U 1.2 U U 0.04 U 1 U U U U U 1.2 U U 0.04 U 1 U U U U U 1.2 U U 0.04 U 1 U U U 1 U U U U U 1.2 U U 0.04 U 1 U U U 1.2 U U 0.04 U 1 U U U U U 1.2 U U 0.04 U 1 U U U 1 U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b b b b 28 bd F2 b b b 51 b - 44 F1 b b - 90 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

44 Page 34 of 36 VOAs a b c d 1,1,1-Trichloroethane mg/kg ,1,2,2-Tetrachloroethane mg/kg ,1,2-Trichloroethane mg/kg ,1-Dichloroethane mg/kg ,1-Dichloroethene mg/kg ,2,4-Trichlorobenzene mg/kg ,2-Dibromo-3-chloropropane (DBCP) mg/kg ,2-Dibromoethane (Ethylene dibromide) mg/kg ,2-Dichlorobenzene mg/kg ,2-Dichloroethane mg/kg ,2-Dichloropropane mg/kg ,3-Dichlorobenzene mg/kg ,4-Dichlorobenzene mg/kg Butanone (Methyl ethyl ketone) (MEK) mg/kg Hexanone mg/kg Methyl-2-pentanone mg/kg (Methyl isobutyl ketone) (MIBK) Acetone mg/kg Benzene mg/kg Bromodichloromethane mg/kg Bromoform mg/kg Bromomethane (Methyl bromide) mg/kg Carbon disulfide mg/kg Carbon tetrachloride mg/kg Chlorobenzene mg/kg Chloroethane mg/kg Chloroform (Trichloromethane) mg/kg Chloromethane (Methyl chloride) mg/kg cis-1,2-dichloroethene mg/kg cis-1,3-dichloropropene mg/kg - Cyclohexane mg/kg - Dibromochloromethane mg/kg Dichlorodifluoromethane (CFC-12) mg/kg Ethylbenzene mg/kg Isopropyl benzene mg/kg Methyl acetate mg/kg - Methyl cyclohexane mg/kg - Methyl tert butyl ether (MTBE) mg/kg Methylene chloride mg/kg Styrene mg/kg Tetrachloroethene mg/kg Toluene mg/kg trans-1,2-dichloroethene mg/kg trans-1,3-dichloropropene mg/kg - Trichloroethene mg/kg Trichlorofluoromethane (CFC-11) mg/kg Trifluorotrichloroethane (CFC-113) mg/kg Vinyl chloride mg/kg Xylenes (total) mg/kg SS-38 SS-38 SS-39 S SSH-SS38B S SSH-SS38C S SSH-SS39 5/6/2016 5/6/2016 5/6/2016 (10-56) In BGS (56-58) In BGS (3-33) In BGS (Duplicate) SVOAs 2,2'-Oxybis(1-chloropropane) mg/kg - (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol mg/kg ,4,6-Trichlorophenol mg/kg ,4-Dichlorophenol mg/kg ,4-Dimethylphenol mg/kg ,4-Dinitrophenol mg/kg - 2,4-Dinitrotoluene mg/kg ,6-Dinitrotoluene mg/kg - 2-Chloronaphthalene mg/kg Chlorophenol mg/kg Methylnaphthalene mg/kg Methylphenol mg/kg Nitroaniline mg/kg - 2-Nitrophenol mg/kg &4-Methylphenol mg/kg ,3'-Dichlorobenzidine mg/kg Nitroaniline mg/kg - 4,6-Dinitro-2-methylphenol mg/kg Bromophenyl phenyl ether mg/kg - 4-Chloro-3-methylphenol mg/kg

45 Page 35 of 36 SVOAs (cont'd) SS-38 SS-38 SS-39 S SSH-SS38B S SSH-SS38C S SSH-SS39 5/6/2016 5/6/2016 5/6/2016 (10-56) In BGS (56-58) In BGS (3-33) In BGS (Duplicate) 4-Chloroaniline mg/kg - 4-Chlorophenyl phenyl ether mg/kg - 4-Nitroaniline mg/kg - 4-Nitrophenol mg/kg - Acenaphthene mg/kg Acenaphthylene mg/kg Acetophenone mg/kg Anthracene mg/kg Atrazine mg/kg Benzaldehyde mg/kg - Benzo(a)anthracene mg/kg Benzo(a)pyrene mg/kg Benzo(b)fluoranthene mg/kg Benzo(g,h,i)perylene mg/kg Benzo(k)fluoranthene mg/kg Biphenyl (1,1-Biphenyl) mg/kg - bis(2-chloroethoxy)methane mg/kg - bis(2-chloroethyl)ether mg/kg bis(2-ethylhexyl)phthalate (DEHP) mg/kg Butyl benzylphthalate (BBP) mg/kg Caprolactam mg/kg Carbazole mg/kg Chrysene mg/kg Dibenz(a,h)anthracene mg/kg Dibenzofuran mg/kg Diethyl phthalate mg/kg Dimethyl phthalate mg/kg Di-n-butylphthalate (DBP) mg/kg Di-n-octyl phthalate (DnOP) mg/kg Fluoranthene mg/kg Fluorene mg/kg Hexachlorobenzene mg/kg Hexachlorobutadiene mg/kg Hexachlorocyclopentadiene mg/kg Hexachloroethane mg/kg Indeno(1,2,3-cd)pyrene mg/kg Isophorone mg/kg Naphthalene mg/kg Nitrobenzene mg/kg N-Nitrosodi-n-propylamine mg/kg N-Nitrosodiphenylamine mg/kg Pentachlorophenol mg/kg Phenanthrene mg/kg Phenol mg/kg Pyrene mg/kg Metals Aluminum mg/kg Antimony mg/kg Arsenic mg/kg Barium mg/kg Beryllium mg/kg Cadmium mg/kg Calcium mg/kg - Chromium mg/kg Cobalt mg/kg Copper mg/kg Iron mg/kg Lead mg/kg Magnesium mg/kg Manganese mg/kg Mercury mg/kg Nickel mg/kg Potassium mg/kg - Selenium mg/kg Silver mg/kg Sodium mg/kg Thallium mg/kg Vanadium mg/kg Zinc mg/kg bd - 16 bd b b b b 170 b b cd cd b b 0.11 U U b b 2.7 b b b b

46 Page 36 of 36 MetalsSEM SS-38 SS-38 SS-39 S SSH-SS38B S SSH-SS38C S SSH-SS39 5/6/2016 5/6/2016 5/6/2016 (10-56) In BGS (56-58) In BGS (3-33) In BGS (Duplicate) Simultaneously extracted metals (SEM)/Acid-volatile sulfide ratio (AVS) none - PCBs Aroclor-1016 (PCB-1016) mg/kg Aroclor-1221 (PCB-1221) mg/kg Aroclor-1232 (PCB-1232) mg/kg Aroclor-1242 (PCB-1242) mg/kg Aroclor-1248 (PCB-1248) mg/kg Aroclor-1254 (PCB-1254) mg/kg Aroclor-1260 (PCB-1260) mg/kg Total PCBs mg/kg U U 0.91 U 0.1 U U 0.91 U 0.1 U U 0.91 U U 0.91 U 0.1 U U 0.91 U 0.1 U U 0.91 U 0.1 U U 0.91 U U 0.91 U Wet Ammonia mg/kg Cyanide (total) mg/kg Formaldehyde mg/kg Sulfide mg/kg - Total organic carbon (TOC) mg/kg b b 2.9 U - 17 bd 73 b - 41 b Notes: U J UJ Not detected at the associated reporting limit. Estimated concentration. Not detected; associated reporting limit is estimated.

47 Table 2 Page 1 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water BD BD BD MD MD MD MD W SSH-1637 W SSH-1634 W SSH-1623 W SSH-1645 W SSH-1636 W SSH-1633 W SSH /24/2016 3/24/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 W FCV HCV Drink HNV Drink WV SW Interface VOAs a b c d e 1,1,1-Trichloroethane ,1,2,2-Tetrachloroethane ,1,2-Trichloroethane ,1-Dichloroethane ,1-Dichloroethene ,2,4-Trichlorobenzene ,2-Dibromo-3-chloropropane (DBCP) ,2-Dibromoethane (Ethylene dibromide) ,2-Dichlorobenzene ,2-Dichloroethane ,2-Dichloropropane ,3-Dichlorobenzene ,4-Dichlorobenzene Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl-2-pentanone (Methyl isobutyl ketone) (MIBK) - Acetone Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide 1 - Carbon tetrachloride Chlorobenzene Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) cis-1,2-dichloroethene cis-1,3-dichloropropene Cyclohexane - Dibromochloromethane Dichlorodifluoromethane (CFC-12) Ethylbenzene Isopropyl benzene Methyl acetate - Methyl cyclohexane - Methyl tert butyl ether (MTBE) Methylene chloride Styrene Tetrachloroethene Toluene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichloroethene Trichlorofluoromethane (CFC-11) - Trifluorotrichloroethane (CFC-113) Vinyl chloride Xylenes (total) VOAsBTEX 1,1,1-Trichloroethane U U U U U U 1,1,2,2-Tetrachloroethane U U U U U U 1,1,2-Trichloroethane U U U U U U 1,1-Dichloroethane U U U U U U 1,1-Dichloroethene U U U U U U 1,2,4-Trichlorobenzene U U U U U U 1,2-Dibromo-3-chloropropane (DBCP) U U U U U U 1,2-Dibromoethane (Ethylene dibromide) U U U U U U 1,2-Dichlorobenzene U U U U U U 1,2-Dichloroethane U U U U U U 1,2-Dichloropropane U U U U U U 1,3-Dichlorobenzene U U U U U U 1,4-Dichlorobenzene U U U U U U 2-Butanone (Methyl ethyl ketone) (MEK) U 0.01 U 0.01 U U 0.01 U 0.01 U 2-Hexanone U 0.01 U 0.01 U U 0.01 U 0.01 U 4-Methyl-2-pentanone (Methyl isobutyl ketone) (MIBK) 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U Acetone U 0.01 U 0.01 U U 0.01 U 0.01 U Benzene U U U U U U Bromodichloromethane U U U U U U Bromoform U U U U U U Bromomethane (Methyl bromide) U U U U U U Carbon disulfide U U U U U U Carbon tetrachloride U U U U U U Chlorobenzene U U U U U U GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

48 Table 2 Page 2 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water BD BD BD MD MD MD MD W SSH-1637 W SSH-1634 W SSH-1623 W SSH-1645 W SSH-1636 W SSH-1633 W SSH /24/2016 3/24/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 W SW Interface VOAsBTEX (cont'd) FCV HCV Drink HNV Drink WV Chloroethane U U U U U U Chloroform (Trichloromethane) U U U U U U Chloromethane (Methyl chloride) U U U U U U cis-1,2-dichloroethene U U U U U U cis-1,3-dichloropropene U U U U U U Cyclohexane U U U U U U Dibromochloromethane U U U U U U Dichlorodifluoromethane (CFC-12) U U U U U U Ethylbenzene U U U U U U Isopropyl benzene U U U U U U Methyl acetate 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U Methyl cyclohexane U U U U U U Methyl tert butyl ether (MTBE) U U U U U U Methylene chloride U U U U U U Styrene U U U U U U Tetrachloroethene U U U U U U Toluene U U U U U U trans-1,2-dichloroethene U U U U U U trans-1,3-dichloropropene U U U U U U Trichloroethene U U U U U U Trichlorofluoromethane (CFC-11) U U U U U U Trifluorotrichloroethane (CFC-113) U U U U U U Vinyl chloride U U U U U U Xylenes (total) U U U U U U SVOAs 2,2'-Oxybis(1-chloropropane) (bis(2-chloroisopropyl) ether) U U U U U U 2,4,5-Trichlorophenol U U U U U U 2,4,6-Trichlorophenol U U U U U U 2,4-Dichlorophenol U 0.01 U U U 0.01 U 0.01 U 2,4-Dimethylphenol U U U U U U 2,4-Dinitrophenol U U 0.02 U U U 0.02 U 2,4-Dinitrotoluene U U U U U U 2,6-Dinitrotoluene U U U U U U 2-Chloronaphthalene U U U U U U 2-Chlorophenol U U U U U U 2-Methylnaphthalene U U U U U U 2-Methylphenol U U U U U U 2-Nitroaniline U U 0.02 U U U 0.02 U 2-Nitrophenol U U U U U U 3&4-Methylphenol U U U U U U 3,3'-Dichlorobenzidine U U U U U U 3-Nitroaniline U U 0.02 U U U 0.02 U 4,6-Dinitro-2-methylphenol U U 0.02 U U U 0.02 U 4-Bromophenyl phenyl ether U U U U U U 4-Chloro-3-methylphenol U U U U U U 4-Chloroaniline U 0.01 U U U 0.01 U 0.01 U 4-Chlorophenyl phenyl ether U U U U U U 4-Nitroaniline U U 0.02 U U U 0.02 U 4-Nitrophenol U U 0.02 U U U 0.02 U Acenaphthene U U U U U U Acenaphthylene U U U U U U Acetophenone U U U U U U Anthracene U U U U U U Atrazine U U U U U U Benzaldehyde U U U U U U Benzo(a)anthracene U U U U U U Benzo(a)pyrene U U U U U U Benzo(b)fluoranthene U U U U U U Benzo(g,h,i)perylene U U U U U U Benzo(k)fluoranthene U U U U U U Biphenyl (1,1-Biphenyl) U U U U U U bis(2-chloroethoxy)methane U U U U U U bis(2-chloroethyl)ether U U U U U U bis(2-ethylhexyl)phthalate (DEHP) U U U U U U Butyl benzylphthalate (BBP) U U U U U U Caprolactam U 0.01 U U U 0.01 U 0.01 U Carbazole U 0.01 U U U 0.01 U 0.01 U Chrysene U U U U U U Dibenz(a,h)anthracene U U U U U U Dibenzofuran U U U U U U Diethyl phthalate U U U U U U Dimethyl phthalate U U U U U U Di-n-butylphthalate (DBP) U U U U U U GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

49 Table 2 Page 3 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water BD BD BD MD MD MD MD W SSH-1637 W SSH-1634 W SSH-1623 W SSH-1645 W SSH-1636 W SSH-1633 W SSH /24/2016 3/24/2016 3/17/2016 3/24/2016 3/24/2016 3/24/2016 3/17/2016 W SW Interface SVOAs (cont'd) FCV HCV Drink HNV Drink WV Di-n-octyl phthalate (DnOP) U U U U U U Fluoranthene U* U* U U* U* U Fluorene U U U U U U Hexachlorobenzene U U U U U U Hexachlorobutadiene U U U U U U Hexachlorocyclopentadiene U U U U U U Hexachloroethane U U U U U U Indeno(1,2,3-cd)pyrene U U U U U U Isophorone U U U U U U Naphthalene U U U U U U Nitrobenzene U U U U U U N-Nitrosodi-n-propylamine U U U U U U N-Nitrosodiphenylamine U U U U U U Pentachlorophenol U U U U U U Phenanthrene U U U U U U Phenol U U U U U U Pyrene U U U U U U Metals Aluminum Antimony U U U U U U Arsenic U U U U U U Barium 0.69 (1) U 0.1 U 0.1 U U 0.1 U 0.1 U Beryllium (1) U U U U U U Cadmium (1) U U U U U U Calcium Chromium 0.11 (1)(2) U 0.01 U 0.01 U U 0.01 U 0.01 U Cobalt U 0.02 U 0.02 U U 0.02 U 0.02 U Copper (1) U U U U U U Iron 0.2 U 0.2 U 0.2 U U 0.2 U 0.2 U Lead (1) U U U U U U Magnesium Manganese 2.90 (1) Mercury U U U U U U Nickel (1) U 0.02 U 0.02 U U 0.02 U 0.02 U Potassium Selenium U U U U U U Silver U U U U U U Sodium Thallium U U U U U U Vanadium U U U U U U Zinc 0.17 (1) U 0.05 U 0.05 U U 0.05 U 0.05 U PCBs Aroclor-1016 (PCB-1016) Aroclor-1221 (PCB-1221) Aroclor-1232 (PCB-1232) Aroclor-1242 (PCB-1242) Aroclor-1248 (PCB-1248) Aroclor-1254 (PCB-1254) Aroclor-1260 (PCB-1260) Aroclor-1262 (PCB-1262) Aroclor-1268 (PCB-1268) Wet (3) (3) (3) (3) (3) (3) (3) (3) (3) U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Ammonia-N 0.20 U 0.20 U U 0.20 U 0.20 U Biochemical oxygen demand (carbonaceous) U Formaldehyde U U U U U - Notes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. (1) Calculated GSI value, based on assumed value of hardness of mg/kg (average calculated in the North Ditch ). (2) Chromium III criteria utilized since speciated data in the RFI indicated that available chromium was Chromium III. (3) PCB TSCA Criteria. GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

50 Table 2 Page 4 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water MD SW SW SW SW SW SW W SSH-1644 W SSH-1618 W SSH-1619 W SSH-1620 W SSH-1635 W SSH-1632 W SSH /24/2016 3/16/2016 3/16/2016 3/16/2016 3/24/2016 3/24/2016 3/17/2016 VOAs 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (Ethylene dibromide) 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 2-Butanone (Methyl ethyl ketone) (MEK) 2-Hexanone 4-Methyl-2-pentanone (Methyl isobutyl ketone) (MIBK) Acetone Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) cis-1,2-dichloroethene cis-1,3-dichloropropene Cyclohexane Dibromochloromethane Dichlorodifluoromethane (CFC-12) Ethylbenzene Isopropyl benzene Methyl acetate Methyl cyclohexane Methyl tert butyl ether (MTBE) Methylene chloride Styrene Tetrachloroethene Toluene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichloroethene Trichlorofluoromethane (CFC-11) Trifluorotrichloroethane (CFC-113) Vinyl chloride Xylenes (total) VOAsBTEX 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (Ethylene dibromide) 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 2-Butanone (Methyl ethyl ketone) (MEK) 2-Hexanone 4-Methyl-2-pentanone (Methyl isobutyl ketone) (MIBK) Acetone Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U* UF U U U U U U U U U U U U U U UF U U* U U U U U U UF U U U U U UF U U U U U 0.01 U 0.01 U U 0.01 U 0.01 U U* 0.01 U 0.01 U U 0.01 U 0.01 U U U U U U U U UF U U* U U U U U U U U U U U GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

51 Table 2 Page 5 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water MD SW SW SW SW SW SW W SSH-1644 W SSH-1618 W SSH-1619 W SSH-1620 W SSH-1635 W SSH-1632 W SSH /24/2016 3/16/2016 3/16/2016 3/16/2016 3/24/2016 3/24/2016 3/17/2016 VOAsBTEX (cont'd) Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) cis-1,2-dichloroethene cis-1,3-dichloropropene Cyclohexane Dibromochloromethane Dichlorodifluoromethane (CFC-12) Ethylbenzene Isopropyl benzene Methyl acetate Methyl cyclohexane Methyl tert butyl ether (MTBE) Methylene chloride Styrene Tetrachloroethene Toluene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichloroethene Trichlorofluoromethane (CFC-11) Trifluorotrichloroethane (CFC-113) Vinyl chloride Xylenes (total) SVOAs 2,2'-Oxybis(1-chloropropane) (bis(2-chloroisopropyl) ether) 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2-Chloronaphthalene 2-Chlorophenol 2-Methylnaphthalene 2-Methylphenol 2-Nitroaniline 2-Nitrophenol 3&4-Methylphenol 3,3'-Dichlorobenzidine 3-Nitroaniline 4,6-Dinitro-2-methylphenol 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chloroaniline 4-Chlorophenyl phenyl ether 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Biphenyl (1,1-Biphenyl) bis(2-chloroethoxy)methane bis(2-chloroethyl)ether bis(2-ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chrysene Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethyl phthalate Di-n-butylphthalate (DBP) U U U U U U U U U U U U U U U U U U U U U U U UF U U U U U U U* 0.01 U 0.01 U U U U U U U U UF U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

52 Table 2 Page 6 of 6 Analytical Results Summary for Additional Characterization of Secondary Pond - Pond Water MD SW SW SW SW SW SW W SSH-1644 W SSH-1618 W SSH-1619 W SSH-1620 W SSH-1635 W SSH-1632 W SSH /24/2016 3/16/2016 3/16/2016 3/16/2016 3/24/2016 3/24/2016 3/17/2016 SVOAs (cont'd) Di-n-octyl phthalate (DnOP) Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd)pyrene Isophorone Naphthalene Nitrobenzene N-Nitrosodi-n-propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Metals Aluminum Antimony Arsenic Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Nickel Potassium Selenium Silver Sodium Thallium Vanadium Zinc PCBs Aroclor-1016 (PCB-1016) Aroclor-1221 (PCB-1221) Aroclor-1232 (PCB-1232) Aroclor-1242 (PCB-1242) Aroclor-1248 (PCB-1248) Aroclor-1254 (PCB-1254) Aroclor-1260 (PCB-1260) Aroclor-1262 (PCB-1262) Aroclor-1268 (PCB-1268) Wet Ammonia-N Biochemical oxygen demand (carbonaceous) Formaldehyde U U U U* U* U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U U U U U U U U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U U U U U U U U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U U U U U U U U U U U U U U U U U U U U U U U U U U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.20 U 0.20 U 0.20 U 0.20 U U 2.0 U 2.0 U U U U - Notes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. (1) Calculated GSI value, based on assumed value of hardness of m (2) Chromium III criteria utilized since speciated data in the RFI indicated t (3) PCB TSCA Criteria. GHD Aiello2-ATTB.4-Surface Water Data Results-2nd Pond

53 Attachment C Attachment 7 Outfall 21 Lowering Correspondence and Approval GHD Aiello2-TP

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