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HomeMy WebLinkAboutWI0500375_Application_20110415State of North Carolina Department of Environment and Natural Resources Division of Water Quality H CEIVED / DENR / DWQ Aquifer Protortion Section APR 15 2011 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S).FOR INJECTION Type 5I Wells — In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection • Do not use this form for remediation systems that extract contaminated groundwater, treat it, and reinject the treated groundwater. • Submit TWO copies of the completed application and all attachments to the address on the last page of this form. • Any changes made to this form will result in the application package being returned. Application Number (to be completed by DWQ): I. GENERAL INFORMATION: 1. Applicant's Name (generally the responsible party): Phillip Akins (Petitioner for DSCA #68-0002) 2. Signing Official's Name: Brian Bellis, Withers & Ravenel, Inc. Title: Senior Hydrogeologist 3. Mailing address of applicant: DSCA Program, Mail Service Center 1646 City: Raleigh State: NC Zip: 27699 Telephone number: 9 1 9- S 0 8- 8 4 0 0 Fax number: 4. Property Owner's Name (if different from Applicant): Madison University Mall , LLC 5. Property Owner's mailing address: 2001 Pennsylvania Ave . NW, 10th Floor City: Washington State: DC Zip: 20005 6. Name and address of contact person who can answer questions about the proposed injection project: Name: Brian Bellis Title: Senior Hydrogeologist Company: Withers E. Ravenel Engineering Address: 1410 Commonwealth Drive Suite 101 City: Wilmington Telephone number: (910) 2 5 6- 9 2 7 7 Email Address: bbellis@withersravenel . com II. PERMIT INFORMATION: State: NC Zip: 28403 Fax number: (910) 2 5 6- 2 5 8 4 1. Project is: ® New ❑ Modification of existing permit ❑ Renewal of existing permit without modification ❑ Renewal of existing permit with modification 2. If this application is being submitted for renewal or modification to an existing permit, provide: existing permit number and the issuance date For renewal without modifications, fill out sections I & II only, sign the certification on the last page of this form, and obtain the property owner's signature to indicate consent (if the applicant is not the owner). For all renewals, you must submit a status report including monitoring results of all injection activities to date. Revised 8/07 UIC-5I/5T Page 1 of 7 i u APPLICATION FOR PERMIT l'O CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells —In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection III. INCIDENT & FACILITY DATA A. FACILITY INFORMATION 1. Facility name: American Cleaners 2. Complete physical address of the facility: 201 South Estes Drive City: Chapel Hill County: Orange State: NC Zip: 27514 B. INCIDENT DESCRIPTION 1. Describe the source of the contamination: Inadvertent release of an unknown quantity of chlorinated ethene, tetrachloroethene, during the operation of the dry cleaning facility, which entered the soil and groundwater. 2. List all contaminants present in soils or groundwater at the site (contaminants may be listed in groups, e.g., gasoline, diesel, jet fuel, fuel oil, chlorinated ethenes, chlorinated ethanes, metals, pesticides/herbicides, etc): Chlorinated ethenes 3. Has LNAPL or DNAPL ever been observed at the site (even if outside the injection zone)? ❑ Yes If yes, list maximum measured separate phase thickness feet NINo If no, list maximum concentration of total VOCs observed at site: 46,000 ppb 4. Agency managing the contamination incident: ❑ UST Section ® Superfund Section (including REC Program and DSCA sites) ❑ DWQ Aquifer Protection Section ❑ Solid Waste Section ❑ Hazardous Waste Section ❑ Other: 5. Incident managers name Mike Cunningham and phone number (919) 5 0 8 - 8 4 5 4 6. Incident number or other site number assigned by the agency managing the contamination incident: DSCA #068-0002 C. PERMITS List all permits or construction approvals that have been issued for the facility or incident, including those not directly related to the proposed injection operation: 1. Hazardous Waste Management program permits under RCRA: EPA ID # NCR 0 0 014 5 7 0 6 2. DWQ Non -Discharge or NPDES permits: 3. County or DEH subsurface wastewater disposal permits: 4. Other environmental permits required by state or federal law: Monitoring We 11 System Construction Permit issued by NCDENR Revised 8/07 UIC-51/5T Page 2 of 7 r l 1 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells —In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection IV. INJECTION DATA A. INJECTION FLUID DATA 1. List all proposed injectants. NOTE: Any substance to be injected as a tracer or to promote in situ remediation must be reviewed by the Occupational and Environmental Epidemiology Section (OEES) of the Division of Public Health, Department of Health and Human Services. Review the list o/ approved injectantsT or contact the UIC Program to determine if the injectants you are proposing have been reviewed by OEES. Injectant: EHC Concentration at point of injection: 2 9 96 Injectant: Concentration at point of injection- Injectant: Concentration at point of injection: Injectant: Concentration at point of injection: Injectant: Concentration at point of injection: 2. Source of fluids used to dilute or chase the injectants listed above: ❑ None ® Municipal water supply ❑ Groundwater from private well or any well within '/ mile of injection site ❑ Air ❑ Other: 3. If any well within '4 mile of injection site, a private well, or surface water is to be used as the fluid source, supply the following information: a. Location/ID number of source: b. Depth of source: c. Formation: d. Rock/Sediment type: e. In Attachment C, provide a current, complete chemical analysis of the water from the source well, including analyses for all contaminants suspected or historically recognized in soil or groundwater on the site. NOTE: If contaminated groundwater is to be wed as the dilution or chase fluid, this is not the proper permit application form. You must apply for a closed -loop groundwater remediation permit using application form GWRS. Revised 8/07 UIC-5I/5T Page 3 of 7 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells —In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection B. PROPOSED OPERATING PARAMETERS 1. Duration of Injection: Maximum number of separate injection events: 1 Expected duration of each injection event: 2 Days Expected duration between events (if more than one event): NA 2. Injection rate per well: 2 -10 gallons per minute (gpm) 3. Total Injection volume: 216 gallons per day (gpd); gallons per event (if separate events) 4. Injection pressure: 4 0 - 6 0 _ pounds/square inch (psi) 5. Temperature at point of injection: ambient °F 6. Briefly describe how the above narameters will be measured and controlled: Pressure gauges on the equipment will measure the injection pressure and flow rate will be calculated by volume injected per time and number of pump strokes per minute. 7. Estimated hydraulic capacity of the well: 5 -10 gpm C. INJECTION WELL CONSTRUCTION DATA 1. Injection will be via: ❑ Existing well(s) proposed for use as an injection well. Provide the data in (2) through (6) below to the best of your knowledge. ® Proposed well(s) to be constructed for use as an injection well. Provide the data in (2) through (6) below as proposed construction specifications. 2. Well Drilling Contractor's Name: JD Barker NC Well Contractor Certification number: 310 6 3. Date to be constructed: August 2011 Number of borings: 12 Approximate depth of each boring (feet): 10 feet 4. Screened interval/Injection interval of injection wells: Depth: 8 to 10 feet below ground surface (if multiple intervals, indicate shallowest and deepest depth). 5. Well casing (N/A if injection is through direct push rods): Type: ❑ PVC ❑ Stainless steel N Other: NA Casing depth: to ft. 6. Grout (N/A if injection is through direct push rods): Type: ❑ Cement ❑ Bentonite X Other: NA Grout depth: to ft. Revised 8/07 UIC-5I/5T Page 4 of 7 if APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells —In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection V. ATTACHMENTS Provide the following items as attachments with the given headings: A. SITE HISTORY Provide a brief description of the site history including: (1) site usage historically and present, (2) origin of the contamination, (3) previous remedial action(s). NOTE: G.S. 89E-18 requires that any geologic plans, reports, or documents in which theperformance is related to the public welfare or safeguarding of the environment be prepared by a licensed geologist or subordinate under his or her direction. G.S. 89E-13 requires that all drawings, reports, or documents involving geologic work which shall have been prepared or approved by a licensed geologist or a subordinate under his or her direction be signed and sealed by him or her. B. HYDROGEOLOGIC DESCRIPTION Provide a hydrogeologic description, soils description, and cross section of the subsurface to a depth that includes the known or projected depth of contamination. The hydrogeologic description shall include: (1) the regional geologic setting; (2) significant changes in lithology; (3) the hydraulic conductivity, transmissivity, and specific yield of the aquifer to be used for injection, including a description of the test(s) used to determine these parameters; and (4) the depth to the mean seasonal high water table. C. INJECTION FLUID COMPOSITION Describe the chemical, physical, biological and radiological characteristics of each injectant. Attach the Material Safety Data Sheet (MSDS) for each injectant. If a private well or a well within 'A mile of the injection site is used as the source well, include chemical analysis of source fluid here. D. INJECTION RATIONALE Attach a brief description of the rationale for selecting the injectants and concentrations proposed for injection, including: (1) goals of the injection project; (2) a description of the reactions between the injectants and the contaminants present including specific breakdown products or intermediate compounds that may be formed by the injection; and (3) summary results of modeling or testing performed to investigate the injectant's potential or susceptibility to change (biological, chemical or physical) in the subsurface. E. INJECTION PROCEDURE AND EQUIPMENT Provide a detailed description of all planned activities related to the proposed injection including but not limited to: (1) construction plans and materials; (2) operation procedures; (3) a detailed diagram of the surface and subsurface portions of the system; and (4) a planned injection schedule. F. MONITORING PLAN Provide a plan for monitoring the results of the injection, including: (1) a list of existing and proposed monitoring wells to be used; (2) a list of monitoring parameters and analytical methods to be used; and (3) a schedule for sampling to monitor the proposed injection. NOTE: The selected monitoring wells must be located so as to detect any movement of injection fluids, process by- products, or formation fluids outside the injection area or zone. The monitoring parameters should include the target contaminants as well as secondary or intermediate contaminants which may result from the injection and other parameters which may serve to indicate the progress of the intended reactions, such as pH, ORP, dissolved oxygen, and Revised 8/07 UIC-51/5T Page 5 of 7 1 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells — In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection other electron acceptors and donors. The monitoring schedule should be consistent with the pace of the anticipated reactions and rate of transport of the injectants and contaminants. G. WELL DATA Provide a tabulation of data on all existing or abandoned wells within 'A mile of the injection well(s) which penetrate the proposed injection zone, including, but not limited to, monitoring wells and wells proposed for use as injection wells. Such data shall include a description of each well's use (water supply, monitoring, etc), total depth, screened or open borehole depth interval, and well construction or abandonment record, if available. H. MAPS Attach the following scaled, site -specific maps: (1) Area map based on the most recent USGS 7.5' topographic map of the area, at a scale of 1:24,000 and showing the location of the proposed injection site. (2) Site map including: a. all property boundaries; b. all buildings within the property boundary; c. existing and proposed injection wells or well field(s) d. any existing sources of potential or known groundwater contamination, including waste storage, treatment or disposal systems within 'A mile of the injection well or well system; e. all surface water bodies within 'A mile of the injection well or well system; and f. all existing or abandoned wells within 'A mile of the injection well(s) which penetrate the proposed injection zone, including, but not limited to, monitoring wells and wells proposed for use as injection wells. (3) Potentiometric surface map(s) including: a. direction of groundwater movement b. existing and proposed monitoring wells c. existing and proposed injection wells (4) Contaminant plume map(s) including: a. the horizontal extent of the contaminant plume, including isoconcentration lines b. existing and proposed monitoring wells c. existing and proposed injection wells (5) Cross-section(s) to the known or projected depth of contamination, including: a. horizontal and vertical extent of the contaminant plume, including isoconcentration lines b. major changes in lithology Revised 8/07 UIC-5I/5T Page 6 of 7 APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Type 5I Wells —In Situ Groundwater Remediation / Type 5T Wells — Tracer Injection VI. CERTIFICATION 72i %t/�/' ZLl S o • otr17-7-fc-RS -a� J ✓c L I, (printed name of sianin.2 official) , hereby certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments thereto and that, based on my inquiry of those individuals immediately responsible for obtaining said information, I believe that the information is true, accurate and complete. I am aware that there are significant penalties, including the possibility of fines and imprisonment, for submitting false information. I agree to construct, operate, maintain, repair, and if applicable, abandon the injection well(s) and all related appurtenances in accordance with the approved specifications and conditions of the Permit. �SCp4>ra--i6 Signature" lid', —�aa Date: Z0// Title: ice'"�T� /'�/vtx - -e �� sysT' If authorized agent is acting on behalf of the applicant, supply a letter signed by the applicant authorizing the above agent. ��4-777g,eF..e) VII. CONSENT OF PROPERTY OWNER (if the property is not owned by the applicant) ("Owner" means any person who holds the fee or other property rights in the well being constructed. A well is real property and its construction on land shall be deemed to vest ownership in the land owner, in the absence of contrary agreement in writing.) I, (printed name of property owner) , as owner of the property on which the injection well(s) are to be constructed and operated, hereby consent to allow the applicant to construct each injection well as outlined in this application and agree that it shall be the responsibility of the applicant to ensure that the injection well(s) conform to the Well Construction Standards (Title 15A NCAC 2C .0200) Signature: Date: Title: 1.tiEIVED 1 DENR !DWQ Submit TWO copies of the completed application package, including all attacftetcProtection Section UIC Program APR 15 2011 Aquifer Protection Section North Carolina DENR-DWQ 1636 Mail Service Center Raleigh, NC 27699-1636 Telephone (919) 733-3221 Revised 8/07 UIC-51/5T Page 7 of 7 'i STATE LEAD CONTRACTOR CONTRACT AND ASSESSMENT AND REMEDIATION AGREEMENT ti ATA NCDENR North Carolina Department of Environment and Natural Resources Division of Purchase and Services Beverly Eaves Perdue, Governor Michael G. Bryant, Director Dee Freeman., Secretary MEMORANDUM TO: Mr. Chan Bryant Withers & Kavenel 111 MacKenan Drive Cary, NC 27511 FROM: Dolan Simmons Capital Projects Coordinator Division of Purchase and Services DATE: February 9, 2011 SUBJECT: N09002S-1 Withers & Ravenel Inactive Hazardous Sites Cleanup Fund Enclosed please find (1) fully executed duplicate original of Amendment #1 to the task order/not to exceed contract N09002S between Withers & Ravenel and the Department of the Environment and Natural Resources in the amount of $300,000. If you have any questions, please contact me at 919.715.3877. For service delivery questions, contact Peter Doorn at 919.508.8578 DS:meb Enclosures c: Jackie Moore, Office of the Controller, (w/enc.) Leslie Aycock, Division of Waste Management (w/enc.) „One o�hCuolina ,1'aturally 1605 Mail Service Center, Raleigh, North Carolina 27699-1605 Phone: 919-733-97461 FAX: 919-715-0684 \ Internet: www.admin.enr.state.nc.usipurcnasei An Equal Opportunity \ Affirmative Action Employer— 50% Recycled 110% Post Consumer Paper STATE OF NORTH CAROLINA COUNTY OF WAKE CONTRACT NO. N09002S CONTRACTOR'S FEDERAL ID OR SOC. SEC. NO.: 56-1740520. AMENDMENT #1 TO CONTRACT NO. N09002S THIS AMENDMENT is made and entered into by and between Withers & Ravenel, a Corporation incorporated in North Carolina with an address of 111 MacKenan Drive, Cary, North Carolina, 27511, hereinafter referred to as "CONTRACTOR," and the North Carolina Department of Environment and Natural Resources, hereinafter referred to as "DEPARTMENT." WITNES SETH: WHEREAS, the DEPARTMENT and CONTRACTOR entered into an AGREEMENT (CONTRACT NUMBER: N09002S) on September 25, 2008 that set forth the conditions under which the CONTRACTOR would perform certain investigative and/or remedial activities related to contamination resulting from the release of dry-cleaning solvents into the environment at various dry-cleaning facility sites in the State of North Carolina; and WHEREAS, Paragraph 48 of the AGREEMENT provided as follows: "This AGREEMENT may be extended for a period of two years, if mutually agreeable to both parties and if the CONTRACTOR'S performance to date has been satisfactory to the DEPARTMENT, provided that sufficient funding exists. The sum of payments made by the DEPARTMENT to the CONTRACTOR, for work authorized by the DEPARTMENT on a task order/cost-not-to-exceed basis, shall not exceed four million dollars ($4,000,000.00) for the 2-year agreement extension period; and WHEREAS, pursuant to Paragraph #1.N.iii, the task -specific costs are listed in the Fee Schedule attached to the AGREEMENT as Attachment 1; and WHEREAS, pursuant to Paragraph #1.N.v, the description of qualifications generally expected of particular levels of personnel, and work tasks specifically performed at each level, are listed in the Personnel Qualifications and Task Descriptions attached to the AGREEMENT as Attachment 2; and WHEREAS, pursuant to Paragraph #21, the AGREEMENT may be amended or modified by written instrument executed by the DEPARTMENT and the CONTRACTOR. NOW, THEREFORE, for and in consideration of the mutual promises to each other, as hereinafter set forth, the parties hereto do mutually agree as follows: Upon the date of execution of this AMENDMENT by the DEPARTMENT, the 2-year AGREEMENT extension becomes effective and extends the contract to September 24, 2013, and the DEPARTMENT may authorize additional payments not to exceed $4,000,000.00 to the CONTRACTOR for work authorized by the DEPARTMENT on a task order/cost-not-to-exceed basis. Upon the date of execution of this AMENDMENT by the DEPARTMENT, the revised Fee Schedule (attached herein as Attachment 1) and the revised Personnel Qualifications and Task Descriptions (attached herein as Attachment 2) become effective and replace the corresponding Attachments of the AGREEMENT. Page 1 of 2 L IN WITNESS WHEREOF, the CONTRACTOR and the DEPARTMENT have executed this AMENDMENT #1 to Contract No. N09002S in duplicate originals, one of which is retained by each of the parties. Withers & Ravencl By (Contractor's Sign (Typed Name) Title Y l 111-6 1. 'S ' (Owner, Partner, or Corp. Pres., or V. Pres. only) Date: t2- It WITNESS: Z. (Signature) North Carolina Department of Environment :and Natural. Resources 4e F reeiS.evrrt rk s (Department Head Signature or Authorized Agent) Date: a•C`2II WITNESS: Page ACVA NCDENR North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Madison University Mall LLC Attn: Frank Rinaldo 2001 Pennsylvania Ave, NW Washington, DC 20005 Division of Waste Management Michael F. Easley, Govemor William G. Ross Jr., Secretary April_ 1, 2008 RE: Petitioner Eligibility DSCA Site ID 068-0002 201 S Estes Dr University Mall Shopping Center Chapel Hill, Orange County The Dry -Cleaning Solvent Cleanup Act (DSCA) Program (DSCA Program) has reviewed your petition to enter into an agreement and considers Madison University Mall LLC an eligible petitioner. Enclosed, please find the executed assessment and remediation agreement. By entering into this agreement, you agree to cooperate with the DSCA Program to assist in the assessment and remediation of the dry-cleaning solvent contamination at the Site. By entering into and complying with the agreement, you obtain the Liability protection afforded pursuant to N.C.G.S. § 143-215.104K. The financial responsibility requirements for this site are detailed in appendix B. The owner(s) of the property will be notified prior to the commencement of any site work to be conducted by the DSCA Program's independent contractors. If you have any questions, please contact me at (919)508-8452. Sincerely, Niki Fountain DSCA Project Manager cc: Attachments: Executed Administrative Agreement for State -Directed Assessment and Remediation Notification of Certification into the Drycleaning Solvent Cleanup Act Program 1646 Mail Service Center, Raleigh, North Carolina 27699.1646 Phone .919.508.8400 \ FAX 919.715.36051 Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer —Printed on Dual Purpose Recycled Panes A7A. NCDENR North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor William G. Ross Jr„ Secretary Letter of Certification into the Drycleaning Solvent Cleanup Act Program On April 1, 2008, pursuant to N.C.G.S. § 143-215.104G, the Dry -Cleaning Solvent Cleanup Act (DSCA) Program has certified the site located at 201 S Estes Dr, Chapel Hill in Orange County into the DSCA Program. The site has been assigned the DSCA identification number 068-0002. Evidence of dry-cleaning solvent contamination has been documented arising from dry-cleaning operations originating from the site. Based on information submittedto the Division at the time of certification, the site is an abandoned facility for the purposes of determining a site's financial responsibilities as required by N.C.G.S § 143-215.104F(f)(2). The site will remain certified in the DSCA Program as long as there is at least one eligible petitioner who is complying with an agreement between the DSCA Program and that petitioner. John Powers North Carolina Superfund Section Special Remediation Branch Supervisor 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-733-4996 FAX 919-715-36051 Internet http;llwastenotnc.org An Equal Opportunity! Affirmative Action Employer — Printed en Dual Purpose Recycled Paper NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT SUPERFUNND SECTION Dry -Cleaning Solvent Cleanup Act of 1997, as amended (DSCA) Program IN THE MATTER OF: AMERICAN DRY CLEANERS UNDER THE AUTHORITY OF THE DRY-CLEANING SOLVENT CLEANUP ACT OF 1997, AS AMENDED, N.C.G.S. § 143-215.104A, et seq. MADISON UNIVERSITY MALL LLC 2001 PENNSYLVANIA AVE, NW WASHINGTON, FALSE 20005 DSCA SITE I.D. 068-0002 AGREEMENT FOR ASSESSMENT AND REMEDIATION PURSUANT TO THE DRY-CLEANING SOLVENT CLEANUP ACT OF 1997, AS AMENDED, PART 6, ARTICLE 21A, CHAPTER 143, N.C.G.S. § 143-215.104A ET SEQ. ("DSCA") I. INTRODUCTION AND STATEMENT OF PURPOSE The North Carolina Department of Environment and Natural Resources, Division of Waste Management ("Division") and Madison University Mall LLC ("Petitioner"), collectively ("Parties"), hereby enter into this Agreement for Assessment and Remediation ("Agreement") pursuant to the Dry -Cleaning Solvent Cleanup Act of 1997, as amended, Part 6, Article 21A, Chapter 143, N.C.G.S. § 143-215.104A et seq. ("DSCA"). In executing this Agreement, Petitioner agrees to cooperate with the Division's Dry -Cleaning Solvent Cleanup Act Program ("Program") and the Division's independent contractors ("contractors" or "independent contractors") to assist in the assessment and remediation of the dry-cleaning solvent contamination at the Site, as defined in Section II. E., below. By entering into and complying with this Agreement, Petitioner obtains the liability protection afforded pursuant to N.C.G.S. § 143- 215.104K. Unless otherwise expressly provided herein, terms used in this Agreement that are defined in DSCA or at 15A NCAC 28 .0102, shall have the meaning assigned to them in those provisions, including any amendments thereto. II. STATEMENT OF FACTS A. On March 13, 2008, Petitioner filed with the Division a Petition for Certification for American Dry Cleaners pursuant to DSCA. B. On April 1, 2008 the Division certified American Dry Cleaners (hereinafter "Certified Facility Site") pursuant to DSCA and informed Petitioner of its DSCA ARAv0705 1 1 certification decision. C. The Certified Facility Site is located at University Mali Shopping Center, 201 S Estes Dr, Chapel Hill in Orange County, North Carolina. D. Petitioner is . a potentially responsible. party, within the meaning of N.C.G.S. § 143- 215.104B(b)(21), for assessment and remediation of dry-cleaning solvent contamination at the Site, as defined in subsection E, below. E. The "Site" consists of all areas at the Certified Facility Site where dry-cleaning solvent contamination arising from dry-cleaning or wholesale distribution operations is found and all areas where dry-cleaning solvent contamination originating at the Certified Facility Site has come to be located. F. The Division is authorized to enter into this Agreement pursuant to the authority vested in the Environmental Management Commission pursuant to DSCA and duly delegated to the Secretary of the North Carolina Department of Environment and Natural Resources and further delegated from the Secretary to the Division. NOW, THEREFORE, for the purpose of assessing and remediating the dry-cleaning solvent contamination at the Site, the Parties agree as follows: • III. WORK TO BE PERFORMED It is Petitioner's desire that assessment and remediation at the Site as required or permitted under DSCA, the rules adopted under DSCA and guidance documents provided by the DSCA Program shall be performed by independent contractors selected by the Division. The Division's contractors shall maintain a minimum level of insurance as defined in their contract with the Division. IV. DISPUTE RESOLUTION If Petitioner objects to any Division notice of disapproval or decision made pursuant to this Agreement, Petitioner shall notify the Division in writing of Petitioner's objections within fourteen (14) calendar days of receipt of the notice of disapproval or decision. The Parties shall then have an additional fourteen (14) calendar days from receipt by the Division of the notice of disapproval or decision to reach an agreement. Han agreement cannot be reached within the fourteen (14) calendar days, or within an additional period if mutually agreed upon by the Parties, the Division shall provide a written statement of its decision to Petitioner. Any decision or action by the Division that cannot be resolved through the dispute resolution procedure established herein may be subject to review pursuant to Chapter 150B of the North Carolina General Statutes, to the extent such review is provided by law. V. FINANCIAL RESPONSIBILITY REQUIREMENTS Upon demand by the Division, Petitioner shall pay to the Division, on behalf of the Dry -Cleaning Solvent Cleanup Fund ("Fund"), any amounts for which Petitioner is responsible pursuant to N.C.G.S. § 143-215.104F(f). Petitioner shall have thirty (30) days from the date of notice of such DSCA ARAv0705. 2 i demand to make payment to the Division. These payments will only be required by the Division when task -specific work has been completed by the Division's contractor. VI. ADDITIONAL PROVISIONS A. To obtain a unique EPA ID number for the disposal of hazardous wastes generated during the assessment and remediation of the Site, Petitioner agrees that Petitioner will be the Operator on the RCRA Subtitle C Site Identification Form. For the purposes of disposing of hazardous waste generated .during the assessment and remediation of the Site, Petitioner agrees that Petitioner will be the Generator on Hazardous Waste Manifests. B. The Petitioner agrees to allow the Division and the Division's independent contractors to act as its authorized representatives for the preparation, signing, filing and delivery of any permit application, hazardous waste manifest, non -hazardous waste manifest, National Pollution Discharge Elimination System ("NPDES") permit, for complying with reporting requirements and for any administrative activities that may be necessary during the course of assessment and remediation conducted pursuant to this Agreement on the Petitioner's behalf. Contemporaneous with the execution of this Agreement, Petitioner has executed the Limited Power of Attorney, Attachment 1, which is incorporated herein by reference, granting this authority to the State and its independent. contractors. C. The Petitioner agrees to execute such amendments to this Agreement as may be required in order to comply with the provisions of DSCA and rules adopted under DSCA. If Petitioner is a property owner of the Certified Facility Site, Petitioner agrees to file such land use restrictions. as shall be required by the Division. D. If, at any time, Petitioner becomes aware of information that may affect the priority ranking score of the Site, Petitioner shall within thirty (30) days provide such informationto the Division. The DSCA Prioritization Ranking Form may be downloaded from the Division's web site at www.ncdsca.org or by requesting a copy from the Division. The Division may revise the Site's priorityranking score using the most current version of the DSCAPrioritization Ranking System. E. Except as provided by this Agreement, the Division retains all its authority under the Inactive Hazardous Sites Response Act of 1987, as amended, regarding inactive hazardous substance or waste disposal sites in relation to the Site. If active dry-cleaning .operations or wholesale distribution operations are occurring at the Site, any hazardous wastes generated by those operations shall be managed in accordance with Article 9 of Chapter130A of the North Carolina General Statutes and the rules adopted at 15A NCAC 13A. F. The signatory for Petitioner to this Agreement certifies that he/she is authorized to execute this Agreement on behalf of Petitioner. G. The Petitioner has designated the following representative(s) as the point of contact and the Division will direct all correspondence related to this Agreement to: DSCA ARAv0705 3 i Madison University Mall LLC Attn: Frank Rinaldi 2001 Pennsylvania Ave, NW Washington, DC 20005. All documents submitted to the Division pursuant to this Agreement shall be mailed or hand delivered to: North Carolina Division of Waste Management DSCA Program Attn: Niki Fountain 1646-Mail Service Center Raleigh, NC. 27699-1646 H. Petitioner shall not assign or transfer any interest in .this Agreement without the prior consent of the Division.. If Petitioner is the owner or operator of the facility or abandoned site, Petitioner shall not transfer the ownership or operation of the facility or abandoned site -to another person without.prior written notification to the Division. The notification form can be downloaded from the Division's web site at www.ncdsca.org or by requesting a copy from the Division. I. If Petitioner is a property owner of the Certified Facility Site, Petitioner shall provide a copy of this Agreement, a copy of the Required Minimum Management Practices Rules, codified at 15A NCAC 2S .0200 and a copy of the Access Agreement executed by the property owner to all owners and operators of any dry-cleaning business operating at the Certified Facility Site before the execution of this Agreement and provide written documentation to the Division demonstrating that Petitioner has complied with this subsection. J. If Petitioner owns or operates a wholesale distribution facility or dry-cleaning business engaged in dry-cleaning operations at the Certified Facility Site, Petitioner shall comply with the Required Minimum Management Practices Rules, codified at 15A NCAC 2S .0200. K. All actions taken pursuant to this Agreement shall be in accordance with applicable local, state and federal laws and regulations. L. Petitioner understands and agrees that pursuant to N.C.G. S. § 143-215.104T, the State, its agencies, officers, employees, and agents shall be absolutely immune from any liability in any proceeding for any injury or claim arising from negotiating, entering into, monitoring, or enforcing a dry-cleaning solvent assessment agreement, a dry-cleaning solvent remediation agreement, or a Notice of Dry -Cleaning Solvent Remediation under DSCA or any other action implementing DSCA. Petitioner agrees to indemnify and save and hold harmless the Division and its officials and employees from any and all claims or causes of action arising from or on account of acts or omissions of Petitioneror its officers, employees, receivers, trustees, agents, or assigns during the term of this Agreement relating to the Site. Neither the Division nor any DSCA ARAv0705 4 11. official or employee thereof shall be held to be a party to any contract other. than (i) this Agreement involving Petitioner relating to the Site or (ii) any other contract expressly executed by the Division or the State ofNorth Carolina. Petitioner further agrees that the Division and its officers and employees will not become potentially responsible parties pursuant to N.C.G.S. § 143-215.104B(21) by virtue of negotiating, entering into, monitoring, enforcing, or undertaking any other act relating to this Agreement and -may not be held liable for any acts of Petitioner's contractors or representatives in implementing. this Agreement. M. The Division's authorization of assessment and/or remediation activities pursuant to this Agreement shall be contingent upon the availability of Monies in the Fund. The Division shall have no obligation to authorize assessment and/or remediation activities at the Site for which monies are notavailable in the Fund. N. The Parties agree that Petitioner's entry into this Agreement and actions undertaken by Petitioner in accordance with this Agreement do not constitute an admission of liability by Petitioner. No approval hereunder or receipt of funds hereby shall be taken as a warranty as to the sufficiency or efficacy of the assessment or remediation of the Site. O. Except as provided underN.C.G.S. § 143-215.104K, nothing herein shall constitute a satisfaction of, or release from, liability for any claim arising as a result of operation, ownership or use of the Site by Petitioner, its agents, lessees, successors or assigns. P. This Agreement may not be modified without the written consent of the Parties; provided, however, Petitioner agrees to execute such amendments to this Agreement as required by section VI.C. Q. Petitioner agrees that, except as provided in Section VI.A., all products generated by, from or as the result of assessment. and remediation of the Site are and shall remain the property of the Division. These products may include but are not limited to documents, remediation equipment, pumps and monitoring wells. Provided, however, "products" shall not include any dry-cleaning solvent as defined at N.C.G.S. § 143-215.104B(b)(9), any hazardous substance as defined at N.C.G.S. § .130A-310(2), or any contaminant as defined at N.C.G.S. § 130A-310.31(b)(4). R. The obligations under Section VI, Paragraphs, (J) (L) and (Q) above shall survive the termination of this Agreement. S..This Agreement shall continue in force until (1) it is terminated or dissolved by either or both Parties pursuant to its terms, (2) the Parties execute a subsequent agreement governing the assessment and/or remediation of the Site, (3) the Division issues a "no further action" letter with respect to the Site or.(4) the Division is unable to obtain the consent of any property owner to file any restrictions on the current or future use of any portion of the Site that are necessary to assure adequate protection of public health and the environment as provided in rules adopted pursuant to G.S. 143-215.104D(b)(3). T. Termination under Section VLS. (1) shall be effective upon ten (10) business days prior written DSCA ARAv0705 notice to the other Party. Termination by the Petitioner shall effect forfeiture of the liability protection afforded pursuant to N.C.G.S. § 143-215.104K. Termination by the Division shall entitle the Petitioner to initiate a contested case pursuant to N.C.G.S. Section 1.43-215.104S and N.C.G.S. Section 150B-23. U. In the event that this Agreement is terminated, the. Division shall retain all applicable enforcement rights against Petitioner, and Petitioner shall retain all applicable defenses. V. . If Petitioner is a property owner of the Certified Facility Site, Petitioner agrees to grant access to the Division and the Division' s independent contractors to undertake all work to be performed at the Certified Facility Site. If Petitioner is not a property owner of the Certified Facility Site, Petitioner shall obtain access for the Division and the Division' s independent contractors to undertake all work to be performed at the Certified Facility Site. This •Agreement shall be deemed executed on the date on which it is signed by the chief of the Superfund Section of the Division or his designee. By: By: k R. Butler, PE [Date] Chief, Superfund Section Division of Waste Management North Carolina Department of Environment and Natural Resources 3.12f!(0 Sf [Signature of/for Petitioner] [Date] [Title of Signatory] DSCA ARAv0705 AGREEMENT FOR ASSESSMENT AND REMEDIATION PURSUANT TO DSCA ATTACHMENT 1 LIMITED POWER OF ATTORNEY I, So-t 'JvivoAt t h 1'100.1 LLC. ("Petitioner"), do hereby grant a limited power of attorney to the Division and to the Division's independent contractors, as follows. The Division and the Division's independent contractors shall have the limited power of attorney for the preparation, signing, filing and delivery of any permit application, hazardous waste manifest, non -hazardous waste manifest, National Pollution Discharge Elimination System (NPDES) permit, for complying with any reporting requirements and for any administrative activities that may be necessary in the course of assessment and remediation conducted pursuant to the Agreement into which this Attachment 1 is incorporated. This limited power of attorney shallterminate upon termination of the Agreement. Dated lGvrdA 2A, 200c( . (Seal) Signature of Petitioner 51:;)`%&41-i a Cot ymk) s . On this 2 ? day of Hard.) , Zoo ', personally appeared before me, the said named el \ 1\ r. ckfl' to me known and known to me to be the person described in and who executed the foregoing limited power of attorney and he (or she) acknowledged that he (or she) executed the same and being duly sworn by me, made oath that the statements in the foregoing limited power of attorney are true. MALINDA LUMPKIN My. Commission Expires NOTARY PUBLIC DISTRICT OF COLUMBIA My Commission Expires January 31, 2012 (Signature of Notary Public) Notary Public (Official Seal) DSCA ARAv0705 Attachment 1 ATTACHMENT A SITE HISORY 1 Attachment A: Site History Site Background The site consists of a 40 acre parcel of property located at 210 South Estes Drive, Chapel Hill, Orange County, North Carolina. The site is currently used as a commercial center which includes two main buildings, one located on the north portion of the property while the second is located in the south central portion of the property. There are also several out parcel buildings. The surrounding properties include; to the north, residential properties, to the east, a church that houses a child daycare and pre-school and residential properties, and to the south and west, commercial properties. In an Underground Storage Tank Closure Report submitted by Withers and Ravenel (W&R) on June 1, 1995, it was reported that the building on the northern portion of the property contained a grocery store and a dry-cleaner. W&R along with A&D Environmental closed an underground storage tank (UST), by removal, which was located adjacent to the dry-cleaners. According to the report, the dry-cleaner facility ceased operations prior to tank closure activities. The UST was used to store number 2 fuel oil for heating the commercial space. During closure activities, two soil samples were collected at the base of the tank bed. Analytical results from one of the soil samples showed the presence of tetrachloroethene (PCE) and trichloroethene (TCE). Due to the presence of chlorinated ethenes in the soil, a groundwater assessment was conduct in May and August 1995 by W&R, at which time, nine groundwater wells were installed and sampled (2W-1 through 2W-8 and 2W-2D). Groundwater samples were collected from the monitoring wells and analyzed for VOCs (volatile organic compounds). Analytical results showed groundwater samples from wells 2W-1, 2W-3, 2W-4, and 2W-6, contained PCE and TCE at concentrations above their respective NC 2L Groundwater Standard. Temporary wells HA-1 and HA-2 were installed inside the former dry-cleaning space. The wells were sampled and analyzed for VOCs. The results from the temporary wells showed PCE at concentrations above the NC 2L Groundwater Standard. In 2007, the property was bought by Madison University Mall, LLC at which time, petitioned NCDENR-DSCA Program to execute an Assessment and Remediate Agreement. Since entering into the program, additional site assessments have been performed by W&R. During the assessment activities, six additional groundwater monitoring wells (MW-1 through MW-6) were installed on the site and on the adjacent property to the east of the site. Results from the groundwater assessment showed the highest concentrations of chlorinated ethenes in monitoring wells 2W-5, MW-2 and MW-3. The groundwater contaminant plume appears to have migrated east onto the adjacent property. Overall, analytical results from samples collected in groundwater wells located hydraulically TI down -gradient from the wells 2W-5, MW-2 and MW-3 are at concentrations near or below their respective NC Groundwater Standard. Previous Remedial Actions In a Summary of Soil Remediation dated March 7, 1996 that was submitted by W&R, it was reported that soil was excavated from under the former dry-cleaners and an area located north and east, adjacent to the former dry-cleaning facility. During the soil remediation event, 400 cubic yards of soil were removed and transported off -site for disposal. On five different occasions, W&R conducted Aggressive Fluid Vapor Recovery (AFVR) events in an effort to reduce VOCs concentration in the groundwater at the site. The AFVR events were performed in January, February, and September 2009, and in March and October, 2010. In January, September 2009 and October 2010, the AFVR was conducted on wells MW-2 and 2W-5 while in February 2009 and March 2010 the AFVR was conducted on MW-2 only. Results from groundwater samples taken after the AFVRs showed a substantial reduction in contaminant concentrations. However, results from the follow-up sampling events showed a contaminant rebound to concentrations similar to pre AFVR concentrations. ATTACHMENT B HYDROGEOLOGICAL DESCRIPTION LI I .1 L H J Attachment B: Hydrogeologic Description Regional Geology The site is located south of central Chapel Hill, Orange County, North Carolina. Orange County lies within the Piedmont Physiographic Province. According to the North Carolina Geologic Survey (NCGS), the Piedmont Province is a region of generally rolling, well rounded hills and ridges. Elevations within the Piedmont range from 300 to 600 feet above mean sea level (ft msl) near its border with the Coastal Plain to 1,500 ft msl at the foot of the Blue Ridge. Chapel Hill is located in the southeast portion of Orange County. The Geologic Map of North Carolina (1985) shows Chapel Hill is located on the western edge of the Triassic Basin and is underlain by arkosic sandstone of the Chatham Group. Carolina Geological Society describes the "Durham-Wadesboro (Triassic) basin is surrounded and presumed underlain by crystalline Piedmont complex composed of acid igneous intrusives, meta- volcanics, meta -sediments and high -rank metamorphic rocks" (Brian, 1977). They continue "Continental sediments preserved in the Durham-Wadesboro (Triassic) basin include maroon to gray fanglomerate, conglomerate, feldspathic sandstone, greywacke, argillite, siltstone, mudstone, black shale, and minor amounts of chert and coal". Site Specific Hydrogeology During previous environmental investigations, it was reported that the first ten to fifteen feet of subsurface material underlining the site is a sandy silt which grades into a silty sand. Beyond the upper ten to fifteen feet is a siltstone which is in turn, underlain by an arkose sandstone (see Attachment B-1). The siltstone appears to be the thickest on the northern portions of the site and eventually pinches out along the southern portions of the site. In January 2011, W&R advanced seven exploratory borings along the axis of the plume to confirm subsurface conditions. Soil encountered during the exploratory drilling was consistent with the previous environmental investigations (see Attachment B-1). Based on groundwater analytical data and subsurface stratigraphy, W&R believes that a pilot study should be performed in the silty sand horizon overlying the siltstone, in the vicinity of 2W-5. Historic groundwater table data shows depth to water levels ranging from three feet to five feet below ground surface (BGS) on the subject property, and six to 11 feet BGS on the adjacent property located east (see Attachment B-2). Groundwater elevation data collected since 2008 shows a consistent groundwater flow to the east, toward North Fordham Boulevard. On January 28, 2011, W&R conducted hydraulic conductivity test in three shallow set wells, 2W-4, 2W-5, and 2W-6, and one deep set well, MW-2. The hydraulic conductivity tests were performed by pumping the wells dry using a submersible pump, then recording the rate of water level recovery in the wells. The results of the hydraulic conductivity tests showed values from shallow set wells ranged from 0.87 ft/day in 2W-6 to 0.23 ft/day in 2W-5, while the deep set well MW-2 showed a hydraulic conductivity value of 0.064 ft/day (see Attachment B-3). Using the hydraulic conductivity values from 2W-5 and the thickness of the silty sand layer within the pilot study injection zone, transmissivity was calculated to be 0.69 ft2/day using the following equation: T=Kb Such that: T=Transmissivity (ft2/day) K=Estimated Hydraulic Conductivity (ft/day) b=Saturated Thickness of the Aquifer (ft) During the exploratory drilling activities, three geotechnical samples were obtained from borings that were advanced in close proximity to shallow set wells 2W-4, 2W-5, and 2W- 6 and submitted for laboratory analysis. Samples (HT-2 and HT-3) collected in close proximity to 2W-4 and 2W-5 were submitted from the silty sand horizon, while the sample (HT-7) collected in close proximity to 2W-6 was submitted from the upper portion of the sandstone for a sieve analysis. The results were plotted on a textural classification triangle (see Attachment B-4). The effective porosity values in 2W-4, 2W-5, and 2W-6 were estimated to be 0.22, 0.20, and 0.23, respectively. The hydraulic gradients for monitoring wells 2W-4, 2W-5, 2W-6 were estimated from the January 2011 Groundwater Contour Map (see Attachment H-Figure 3). The hydraulic gradients in 2W-4, 2W-5, and 2W-6 were calculated to be 0.018 ft/ft, 0.016 ft/ft, and 0.016 ft/ft, respectively. Using the values listed above, estimates of groundwater seepage velocity in the vicinity of wells 2W-4, 2W-5, and 2W-6, were calculated using the following equation: V = ki Ile Such that: V=Seepage Velocity (ft/day) K=Estimated Hydraulic Conductivity (ft/day) i=Estimated Hydraulic Gradient (ft/ft) ne Effective porosity Seepage velocities are summarized in the table below: Well ID Transmissivity k (ft2/day) (ft/day) i (ft/ft) Ne (unitless) V (ft/day) V (ft/year) 2W-4 NA 0.54 0.018 0.22 0.044 16.13 2W-5 0.69 0.23 0.016 0.2 0.018 6.72 2W-6 NA 0.87 0.014 0.23 0.053 19.33 NA=Not Applicable References Brian George L., et al, 1977. Field Guide to the Geology of the Durham Triassic Basin. ATTACHMENT B-1 BORING LOGS Page 1 of 1 BORING NUMBER 81 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery Z w w O Ill m a En O a a cn BLOWS/FT. I E j O GRAPHIC LOG SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM 5- _ 10- SS-1 19 :44•-•: . Asphalt _ — �' Gravel subgrade �- — .L71=1. -i3 -- Clayey, silty sand orange -brown to light brown _ Sand slightly silty sand that coarsens with depth, light _ grey in color Boring terminated at 7.0' JOB NUMBER: 10-85-014 ;( u Page 1 of 1 BORING NUMBER 82 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery w SAMPLE SAMP. NO. t- a m E Q - o 5'` 0 I O = CC C7 SOIL CLASS 1 DESCRIPTION AND REMARKS WELL DIAGRAM 5- 10— SS-150/5' , ::. ✓id ved Asphalt s _ — Gravel subgrade . ..— — - Clayey, silty sand orange -brawn to light brown - • •_ • • • . ••.: • ••. Sandstone cemented coarse to fine-grained sandstone that crumble _ easily, mottled iron -brown in color Boring terminated at 7,0' — JOB NUMBER: 10-95-014 Pagel of1 BORING NUMBER 83 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery waj 0 SAMPLE J I'ON 'dNV'S 0 CO r OVA (ppm) GRAPHIC LOG co co 0 N DESCRIPTION AND REMARKS WELL DIAGRAM - 5- - _ 10 r SS-1 SS-2 15 45 i:K: Asphalt _ • o Gravel subgrade — — ..77.1 L-_ Clayey, silty sand light brown to orange -brown, very moist ti _ = — — — Silty sand fine-grained mottled maroon, grey -green '" r- Boring terminated at 8.5' JOB NUMBER: 10-95-014 Page 1 of 1 BORING NUMBER 84 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST 8i11 Peery a. w SAMPLE SAMP. NO. m a a o 1 14r o = cc CD SOIL CLASS I DESCRIPTION AND REMARKS WELL DIAGRAM 5- _ 10— SS-1 SS-250/4 19 k74"` it.3.•.+:40 Asphalt -- _ Gravel subgrade - — =- Clayey; silty sand light brown to orange -brown - — — ` - — Silty sand medium to fine-grained, light grey in color _ with some iron -brown mottling ; •• • • • . •• Sandstone crumbly, coarse -grained sandstone white/brown in color Boring terminated at 7.5' - JOS NUMBER: t0-95-014 Page 1 of BORING NUMBER B5 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery 3— nw mow 4.1 a a SAMP. NO. I N o J co OVA (ppm) GRAPHIC LOG cn N 0 O 0, DESCRIPTION AND REMARKS WELL DIAGRAM 1 .a' Asphalt P' •0 y'r't Gravel subgrade Clayey, silty sand — light brown to orange -brown ,.�•., J 5 _ L —. Silty sand — medium to fine-grained, light grey in color _� with some iron -brown mottling - SS-1 20—• ' SS- SO/5 — - •• • Sandstone • • - crumbly, coarse -grained sandstone white/brown in color •'• Boring terminated at 7.5' 10- - JOB NUMBER: 10-95-014 Page 1 of 1 BORING NUMBER 86 DATE DRILLED 8/9/95 SURFACE ELEVATION Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST 8111 Peery DEPTH feet SAMPLE i o z a a cn BLOWS/FT. I a o cn OJ U z a Q cn to J c3 o 0 DESCRIPTION AND REMARKS WELL DIAGRAM 5- _ 10— SS-1 18 1-.1.. Asphalt — ' a Gravel subgrade — — = = Clayey, silty sand light brown to orange -brown - — — ` r '- — Silty sand medium to fine-grained, light grey in color with some iron -brown mottling Boring terminated at 7.0' -— JOB NUMBER: 10-95-014 Page 1of1 BORING NUMBER 21'1 DATE DRILLED 5/23/95 SURFACE ELEVATION 100.00 Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills. Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery DEPTH feet SAMPLE 1 o z a m a U) BLOWS/FT. I E Q. a > o L5r GRAPHIC LOG I SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM - - - 5- ` _ _ _ 10 ry 15- - - 20- a - - 25- SS-1 SS-2 SS-3 SS-5 SS-650/3' Ss-750/2! 27 24 18 50 '`V•'�� - Asphalt 1- �kIIIIIILLILLtII111LIL1 ____ __- --- _`, Gravel subgrade Clayey silt - mottled light brown to grey in color, stiff, dry --- .- - Silty sand very fine sand, mottled brownish grey in color, dry - Sand slightly silty sand that coarsens with depth, light — grey in color, sands are damp between 4 - 5.5', and wet between 5.5 -6.5'. - •••• • •'••, • _ Sandstone cemented coarse to fine-grained sandstone that crumbles easily, mottled iron -brown in color. - — — . - _.-J - - • - _._ ---, Siltstone - cemented silt with fine sand, occasional gravels, dry in appearance -- • - — - • - - — ti -' _ - - - Auger refusal at 18.5' - Note: the boring from 8.5 - 18.5' was backfilled in the following manner: - 12.6 -18.5' cuttings 10.0 - 12.6' silica sand 8.5 - 10.0' bentonite pellets - JOB NUMBER: 10-05-014 1 Page 1of1 BORING NUMBER 21.12-5 DATE DRILLED 8/7/95 SURFACE ELEVATION 99.79 Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery DEPTH feet SAMPLE 1 ci z a m Uf BLOWS/FT, - Q. a O GRAPHIC LOG I in cn a O fn DESCRIPTION AND REMARKS i WELL DIAGRAM j _ - 5- - - 10— 15- 20- 25- SS-1 SS-2 SS-3 24 20 33 - Asphalt fr_ 2" Sch.40 PVC---� k 0.01 slotted PVC screen _—>i • IIi1IIIllifiIIIIIIIIII 1 medium grain sand --* - eI bentonite seal gr+ Lair``,' - - — — — — _\ , Gravel subgrade 1 Sandy silt/silty sand _ stiff, slightly plastic fine sandy silt, mottled light tan, iron -brown in color _ Sand medium to fine-grained sand, light tan and brown to iron -brown in color, wet between 5.5 - 7.0' •' • • • ., •' •• Sandstone cemented coarse to fine-grained sandstone that crumble easily, mottled iron -brown in color, moist — Boring terminated at 8.0' _ - _ JOB NUMBER: 10-95-014 Page IofI BORING NUMBER 21V2-C DATE DRILLED 8/8/95 SURFACE ELEVATION 99.70 Feet (TOCl WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Dill Peery DEPTH feet SAMPLE I 6 Z d a N r -- En O m OVA PPm) GRAPHIC LOG cn m J rJ J ca DESCRIPTION AND REMARKS WELL DIAGRAM - - 10- 15- 20- 25 _ SS-1 SS-2 SS-3 SS-4 SS-4 24 20 33 40 0/3.5' •• 11111111111111111111 1 1lf111111111111111111i111 1 Asphalt _- . ..- . - — - - - _fir Gravel subgrade Sandy silt/silty sand _ stiff, slightly plastic fine sandy silt, mottled light tan, iron -brown in color _ Sand - medium to fine-grained sand, light tan to iron -brown in color, wet between 5.5 - 7.0' • • • • Sandstone cemented coarse to fine-grained sandstone that crumble - easily, mottled iron -brown in color, moist - --- . - Siltstone cemented silt with fine sand, mottled grey -green and - maroon in color, dry in appearance - - Boring terminated at 14.0' -- _ - _ JOB NUMBER: 10-95-014 Page Iaf1 BORING NUMBER ._2W3- DATE DRILLED 8/8/95 SURFACE ELEVATION 99.64 Feet (TOC) WI FHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST 9171 Peery ❑EPTH feet SAMPLE I SAMP. NO. BLOWS/FT. Q. ?d o 0 o U = cc 0 _ up U 1_ o DESCRIPTION AND REMARKS ' WELL DIAGRAM Topsoil Sandy silt/silty sand _ - ` _ mottled grey -brown and light grey medium to fine- grained silty sand, slightly moist 5— SS-1 t3 — - I- -_— _.. _ Siltstone cemented silt with fine to medium sand, sands - —. - • —• • coarsen with depth, mottled grey -maroon in color, dry in appearance SS-250/.5' — . - 10- _.- — •• •-. Sandstone _ • • • •- • - cemented medium to very fine-grained sandstone that crumbles easily, greenish-grey/white in color, 15- SS-35012" '.. _ drilling became easier at 22.5', slightly moist • •- - ••• ••. _ • :: .. ••. - SS-450/3' •-•: - 20- i : • SS-550/2" ; . .•. - •• _ . •• _ - •� • - - • :• - SS-650/2" - 25- - - Boring terminated at 24.0' ` Note: cuttings cave-in from 21.0 - 24.0' 30- - - JOB NUMBER: 10-95-014 it r Page 1of1 BORING NUMBER 2W4 DATE DRILLED 8/7195 SURFACE ELEVATION 99.65 Feet (TOC) WITHERS & RAVENED ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST all! Peery w w o SAMPLE I SAMP. NO. BLOWS/FT. E a a > o a VS,t.,.��, GRAPHIC LOG rn to a j o u DESCRIPTION AND REMARKS WELL DIAGRAM _ 5- - 10--- 15- 20- 25- SS-1 SS-2 SS-3SO/5" 19 71 j� - - - -- v-';, Asphalt -- 1IIIIIiiiii ii iii iiiii - — — .— _\ Gravel subgrade ' Sandy silt/silty sand _ possibly fill- encountered brick at 4.0 - 4.5', coarse to fine-grained sand, orange -brown to light brown in color. moist Sand - coarse brown sands, wet — . __. - - - - Siltstone cemented silt with fine sand, primarily maroon in color, - slightly moist - Boring terminated at 9.5' - - - JOB NUMBER: 10-95-014 Page Iof1 BORING NUMBER 2W5 DATE DRILLED 8/10/95 SURFACE ELEVATION 98.56 Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery DEPTH feet SAMPLE 1 SAMP. NO. BLOM1S/FT. E a a O . GRAPHIC LOG I SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM S _ - - 10— - - 15- 20- 25- SS-1 SS-2 15 100+ v:'W _ N Asphalt — — — - — -:--. _\ Gravel subgrade Clayey, silty sand _ orange brown to approx. 2.5 - 3.0' when it becomes light grey to mottled grey and iron -brown, moist — - Sand brown sands, coarse to fine-grained, very moist L •• ••. • • • , • •. Sandstone - cemented medium to fine-grained sandstone that crumbles easily, mottled maroon and greyish white - in color, dry to very slightly moist - Boring terminated at 10.0' r - - - JOB NUMBER: 10-95-014 Page I of BORING NUMBER 2N6 DATE DRILLED 8/8/95 SURFACE ELEVATION 97.44 Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST OR Peery DEPTH feet u.t a a co SAMP. NO. BLOWS/FT. E a g a a 0 GRAPHIC LOG SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM 0 rr4,.. v":. N.N.Asphalt -- — _\\ Gravel subgrade ! — -- Clayey/silty sand - — _ possibly fill to 2.5', light orange brown in color, — light grey medium to fine-grained silty sand to 5.0' SS-150/5" = 5- •_• Sandstone SS-250/5" • .. cemented coarse to fine-grained sand, crumbles easily, • • . - mottled iron -brown to greyish -white in color, slightly • moist - SS-3 50 .••^ - - •. SS-450/5" ••••. - : '.. - 10— • • •. SS -a 0/5;5" ... . •: - - SS-650/3' �•••- 15- - Boring terminated at 13.0' — _ - 20- - - 25- - - JOB NUMBER: 10-95-014 Page f of 1 BORING NUMBER 2W7 DATE DRILLED 8/8/95 SURFACE ELEVATION 98.54 Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Nills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery DEPTH feet SAMPLE z a: Q 0) BLOWS/FT. I e. > O GRAPHIC LOGI cn a v J_ O V) DESCRIPTION AND REMARKS WELL DIAGRAM _ 5- - 10-- - 15- - 20- 25- SS-t SS-2 SS-350/4' SS-450/5' a 4 -- - - - ry - Asphalt 0_0 11111 - •— — — - Z.7 =� . _` Gravelsubgrade Sandy silt/clayey, silty sand _ mottled grey --maroon sandy silt to approximately 3.0' that may be fill, medium grey clayey, silty sand with plant roots between 3.0 - 7.5', very moist to wet .• •.. • ••. • • w Sandstone cemented coarse to fine-grained sand, crumbles easily, greyish -white in color, slightly moist — •. Boring terminated at 9.0" - - JOB NUMBER: 10-95-014 Page 1of1 BORING NUMBER 2W8 DATE DRILLED 8/10/95 SURFACE ELEVATION 100.35Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Inc. PROJECT American Dry Cleaners GEOLOGIST Bill Peery = w °' ci SAMPLE I d z 4 co BLOWS/FT. I a d. a > O 1 F GRAPHIC LOG I SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM — 10— 15- 20- SS—f SS-2 23 42 '{ Asphalt — - Jill llill IllllllIlit lllllllli L Gravel subgrade I Clayey, silty sand orange brown In calor Sand silty sand which becomes a greyish white, fine sand _ between 4.5 — 8.0' and coarser, tan sands between 8.0 — 8.0' which are very moist — - —.. Siltstone cemented silt with fine sand, primarily maroon in calor — Boring terminated at 8.0' -- - .111R MIIARFR• to-aF-mn Page 1 of 1 BORING NUMBER 2W8 DATE DRILLED 8/1O/95 SURFACE ELEVATION _ 100.35Feet (TOC) WITHERS & RAVENEL ENVIRONMENTAL ENGINEERING INC CLIENT North Hills, Ina PROJECT American Dry Cleaners GEOLOGIST gill Peery DEPTH feet SAMPLE I z 0 a en BLOWS/FT. E d a o 1 GRAPHIC LOG I SOIL CLASS DESCRIPTION AND REMARKS WELL DIAGRAM 10- 15- 20- ISS-2 SS-i 23 42 Asphalt - - - - _IIII IIIIIIIIHill IIIIIIIIIIII 1 r` \ Gravel subgrade- f Y Clayey. silty sand orange brawn In color Sand silty sand which becomes a greyish white. fine sand - between 4.5 - 8.0' and coarser, tan sands between 8.0 - B.0' which are very moist - - Slltstone cemented silt with fine sand, primarily maroon in color - Boring terminated at 9.0' - - . Il1R N Imam- U1-Q'-flid 11 a WITHERS RAVENI EL FIELD BORING LOG ENGINEERS I PLANNERS i SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-1 PROJECT INFORMATION DRILLING INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 15 NORTHING COORD.: 793272.4754 DEPTH (FEET) GRAPHIC SOIL DESCRIPTION 0 2 4 6 10 12 14 NOTES: EASTING COORD.: 1992348.5366 PID (PPm) REMARKS ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at six feet BGS, firm Rock: Maroon and gray SILTSTONE, dry, hard Page 1 of 1 • i WITH ERS AV EN EL FIELD BORING LOG ENGINEERS ! PLANNERS 1 SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-2 PROJECT INFORMATION DRILLING INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 15 NORTHING COORD.: 793222.6956 DEPTH (FEET) GRAPHIC 0 2 4 6 8 10 12 14 NOTES: EASTING COORD.: 1992343.7263 SOIL DESCRIPTION PID (PPm) REMARKS ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at five feet BGS, firm Rock: Maroon and gray SILTSTONE, dry, hard Rock: Tan fine to medium Arkose SANDSTONE, quartz, potassium feldspar, plagioclase feldspar, mica, weathered, moist, hard Page 1 of 1 1 i I WITHERS R&►VENEL FIELD BORING LOG ENGINEERS I PLANNERS E SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-3 PROJECT INFORMATION DRILLING INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 10 NORTHING COORD.: 793182.2839 DEPTH (FEET) GRAPHIC 0 2 4 6 8 10 NOTES: EASTING COORD.: 1992340.1598 SOIL DESCRIPTION PID (ppm) ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at six feet BGS, firm Rock: Maroon and gray SILTSTONE, dry, hard REMARKS Page 1 of 1 r t WITHERS RAVEIVEL FIELD BORING LOG ENGINEERS l PLANNERS l SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-4 PROJECT INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING INFORMATION DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 10 NORTHING COORD.: 793134.3446 DEPTH (FEET) GRAPHIC 0 2 4 8 10 NOTES: EASTING COORD.: 1992336.5933 SOIL DESCRIPTION PID (PPm) REMARKS ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at five feet BGS, firm Rock: Maroon and gray SILTSTONE, dry, hard Page 1 of 1 r WITHERS RAVEN1 EL FIELD BORING LOG ENGINELHS f PLANNERS SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-5 PROJECT INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING INFORMATION DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 8 NORTHING COORD.: 793091.5558 DEPTH (FEET) 0 2 4 6 8 NOTES: GRAPHIC EASTING COORD.: 1992332.6306 SOIL DESCRIPTION ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at six feet BGS, firm Rock: Maroon and gray SILTSTONE, dry, hard Rock: Tan fine to medium Arkose SANDSTONE, quartz, potassium feldspar, plagioclase feldspar, mica, weathered, moist, hard PID (PPm) REMARKS Page 1 of 1 l WITHERS �1 RAVENE FIELD BORING LOG ENGINEERS I PLANNERS ( SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-6 PROJECT INFORMATION DRILLING INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 7 NORTHING COORD.: 793061.4559 EASTING COORD.: 1992328.8139 DEPTH (FEET) GRAPHIC 0 2 4 NOTES: SOIL DESCRIPTION PID (ppm) REMARKS ML: Orange/gray mottled fine sandy SILT low plasticity, dry, firm SC: Tan silty fine SAND, quartz, potassium feldspar, plagioclase feldspar, biotite, poorly sorted, angular grains, moist to saturated at six feet BGS, firm Rock: Tan fine to medium Arkose SANDSTONE, quartz, potassium feldspar, plagioclase feldspar, mica, weathered, moist, hard Page 1 of 1 J WITHERS MAW ENEL FIELD BORING LOG ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-535-4545 www.withersravenel.com BOREHOLE NO.: HT-7 PROJECT INFORMATION DRILLING INFORMATION PROJECT NAME: DSCA NO.: W&R JOB NO.: SITE LOCATION: LOGGED BY: American Cleaners 68-0002 02060496.39 Chapel Hill, NC Chris Fay DRILLING COMPANY: METHOD OF DRILLING: SAMPLING METHOD: HOLE DIAMETER: DATES DRILLED: TOTAL DEPTH: Quantex GeoProbe Continuous Sleeve 2 in 1/28/11 8 NORTHING COORD.: 793029.014 EASTING COORD.: 1992326.1469 DEPTH (FEET) GRAPHIC 0 2 4 6 SOIL DESCRIPTION PID (ppm) ML: Orange/brown/gray mottled fine sandy CLAY, high plasticity, dry, soft 8 NOTES: Rock: Tan fine to medium Arkose SANDSTONE, quartz, potassium feldspar, plagioclase feldspar, mica, weathered, moist, hard REMARKS Page 1 of 1 00 11 ATTACHMNET B-2 HISTORICAL WATER TABLE LEVEL DATA I . I Groundwater Sampling Point Sampling Date (mm/dd/yy) TOC Elevation [feet] Depth to Water [feet bgs] Groundwater Elevation [feet] Depth to NAPL [feet bgs] NAPL Thickness [feet] Corrected* Groundwater Elevation [feet] 2W2-S 9/23/08 265.79 4.92 260.87 N/A N/A 260.87 2W2-S _ 1/30/2009 265.79 4.79 261.00 NIA N/A 261 2W2-S 2/27/2009 265.79 4.8 260.99 N/A N/A 261.01 2W-2S_ 6/30/2009 265.79 4.82 260.97 N/A N/A 260.97 2W-2S 9/30/2009 265.79 5.36 260.43 N/A N/A 260.43 2W-2S 12/21/2009 265.79 4.52 261.27 N/A N/A 261.27 2W2-S 3/18/2010 265.79 4.1 261.69 N/A N/A 261.69 2W2-S 7/8/2010 265.79 5.18 260.61 N/A N/A 260.61 2W2-S 10/21/2010 265.79 _ 5.49 260.3 N/A N/A 260.3 2W2-S 1/21/2011 265.79 5.29 260.5 N/A N/A 260.5 2W2-D 9/23/08 265.73 4.81 260.92 N/A N/A 260.92 2W2-D 1/30/2009 265.73 4.79 260.94 N/A N/A 260.94 2W2-D 2/27/2009 265.73 4.78 260.95 N/A N/A 260.93 2W-2D 6/30/2009 265.73 4.87 260.86 N/A N/A 260.86 2W-2D 9/30/2009 265.73 5.33 260.4 N/A N/A 260.4 2W-2D 12/21/2009 265.73 4.56 261.17 N/A N/A 261.17 2W2-D 3/18/2010 265.73 N/A N/A N/A N/A N/A 2W2-D 7/8/2010 265.73 5.19 260.54 N/A N/A 260.54 2W2-D 10/21/2010 265.73 5.42 260.31 N/A N/A 260.31 2W2-D 1/21/2011 265.73 5.23 260.5 N/A N/A 260.5 2W4 9/23/08 265.61 4.67 260.94 N/A N/A 260.94 2W4 1/30/2009 265.61 4.8 260.81 N/A N/A 260.81 2W4 2/27/2009 265.61 4.89 260.72 N/A N/A 260.72 2W-4 6/30/2009 265.61 4.58 261.03 N/A N/A 261.03 2W-4 9/30/2009 265.61 5.26 260.35 N/A N/A 260.35 2W-4 12/21/2009 265.61 4.63 260.98 N/A N/A 260.98 2W4 3/18/2010 265.61 4.18 261.43 N/A N/A 261.43 244'4 7/8/2010 265.61 4.85 260.76 N/A N/A 260.76 2W4 10/21/2010 265.61 5.22 260.39 N/A N/A 260.39 2W-1 I r21 2111 1 265.61 5.16 260.45 N/A N/A 260.45 244'5 9123108 264.53 4 '" 260.26 N/A N/A 260.26 2W5 1/30/2009 264.51 5.51 259.02 N/A N/A 259.02 2W5 2/27/2009 264.53 4.2 260.33 N/A N/A 260.33 2W-5 6/30/2009 264.53 4.41 260.12 N/A N/A 260.12 2W-5 9/30/2009 264.53 4.72 259.81 N/A N/A 259.81 2W-5 _ 12/21/2009 264.53 4.34 260.19 N/A N/A 260.19 2W5 3/18/2010 264.53 3.87 260.66 N/A N/A 260.66 2W5 7/8/2010 264.53 4.47 r 260.06 N/A N/A 260.06 2W5 10/21/2010 264.53 4.73 259.8 N/A N/A 259.8 2W5 1/21/2011 264.53 4.57 259.96 N/A N/A 259.96 2W6 9/23/08 264.77 5.53 259.24 N/A N/A 259.24 2W6 1/30/2009 264.77 4.99 259.78 N/A N/A 259.78 2W6 2/27/2009 264.77 5.61 259.16 N/A N/A 259.16 2W-6 6/30/2009 264.77 5.09 259.68 N/A N/A 259.68 2W-6 9/30/2009 264.77 5.62 259.15 N/A N/A 259.15 2W-6 12/21/2009 264.77 3.38 261.39 N/A N/A 261.39 2W6 3/18/2010 264.77 4.89 259.88 N/A N/A 259.88 2W6 7/8/2010 264.77 5.64 259.13 N/A N/A 259.13 2W6 10/21/2010 264.77 6.01 258.76 N/A N/A 258.76 2W6 1 1/21/2011 264.77 5.56 259.21 N/A N/A 259.21 2W7 9/23/08 264.54 2.73 261.81 N/A N/A 261.81 2W7 1/30/2009 264.54 4.85 259.69 N/A N/A 259.69 2W7 2/27/2009 264.54 4.85 259.69 N/A N/A 259.69 2W-7 6/30/2009 264.54 0.69 263.85 N/A N/A 263.85 2W-7 9/30/2009 264.54 3.15 261.39 N/A N/A 261.39 2W-7 12/21/2009 264.54 5.23 259.31 N/A N/A 259.31 2W7 3/18/2010 264.54 3.95 260.59 N/A N/A 260.59 2W7 7/8/2010 264.54 1.6 262.94 N/A N/A 262.94 2W7 10/21/2010 264.54 3.18 261.36 N/A N/A 261.36 :V;" 1/21,2011 264.5-I ... 261.17 N.:4 1.A 261.11 2W8 9123/O8 2A1.;2 5.in 3h11."6 N. N.A 76J.'r, 2W8 1/30/2009 2611 32 5.75 260.57 N/A N/A 260.57 2W8 2/27/2009 266.32 5.73 260.59 N/A N/A 260.59 2W-8 6/30/2009 266.32 5.6 260.72 N/A N/A 260.72 2W-8 9/30/2009 266.32 5.67 260.65 N/A N/A 260.65 2W-8 12/21/2009 266.32 5.52 260.8 N/A N/A 260.8 2W8 3/18/2010 266.32 4.55 261.77 N/A N/A 261.77 2W8 7/8/2010 266.32 5.95 260.37 N/A N/A 260.37 2W8 10/21/2010 266.32 6.05 260.27 N/A N/A 260.27 2W8 1/21/2011 266.32 6.27 260.05 N/A N/A 260.05 rl Groundwater Sampling Point Sampling Date (mm/dd/yy) TOC Elevation [feet] Depth to Water [feet bgs] Groundwater Elevation [feet] Depth to NAPL [feet bgs] NAPL Thickness [feet] Corrected* Groundwater Elevation [feet] MW-1 9/23/08 266.35 8.2 258.15 N/A N/A 258.15 MW-1 1/30/2009 266.35 7.01 259.34 N/A N/A 259.34 MW-1 2/27/2009 266.35 7.86 258.49 N/A N/A 258.49 MW-1 6/30/2009 266.35 7.89 258.46 N/A N/A 258.46 MW-1 9/30/2009 266.35 8.31 258.04 N/A N/A 258.04 MW-1 12/21/2009 266.35 7.81 258.54 N/A N/A 258.54 MW-1 3/18/2010 266.35 7.28 259.07 N/A N/A 259.07 MW-1 7/8/2010 266.35 8.13 258.22 N/A N/A 258.22 MW-1 10/21/2010 266.35 8.58 257.77 N/A N/A 257.77 MW-1 1/21/2011 266.35 8.38 257.97 N/A N/A 257.97 MW-2 9/23/08 268.03 11.39 256.64 N/A N/A 256.64 MW-2 1/30/2009 268.03 12.32 255.71 N/A N/A 255.71 MW-2 2/27/2009 268.03 8.31 259.72 N/A N/A 259.72 MW-2 6/30/2009 268.03 8.02 260.01 N/A N/A 260.01 MW-2 9/30/2009 268.03 8.61 259.42 N/A N/A 259.42 MW-2 12/21/2009 268.03 8.02 260.01 N/A N/A 260.01 MW-2 3/18/2010 268.03 7.63 260.4 N/A N/A 260.4 MW-2 7/8/2010 268.03 8.37 259.66 N/A N/A 259.66 MW-2 10/21/2010 268.03 8.89 259.14 N/A N/A 259.14 MW-2 1/21/2011 268.03 8.73 259.3 N/A N/A 259.3 MW-3 9/24/08 269.40 8.92 260.48 N/A N/A 260.48 MW-3 1/30/2009 269.40 8.81 260.59 N/A N/A 260.59 MW-3 2/27/2009 269.40 8.80 260.6 N/A N/A 260.6 MW-3 6/30/2009 269.40 8.56 260.84 N/A N/A 260.84 MW-3 9/30/2009 269.40 9.2 260.2 N/A N/A 260.2 ~ MW-3 12/21/2009 269.40 8.65 260.75 N/A N/A 260.75 MW-3 3/18/2010 269.40 7.85 261 55 N/4 NIA 261.55 MW-3 7/8/2010 269.40 8.80 260.6 N/A N/A 260.6 MW-3 10/21/2010 269.40 10.33 259.07 N/A N/A 259.07 MW-3 1/21/2011 269.40 9.46 259.94 N/A N/A 259.94 MW4 7R4108 264.30 12.11 252.19 N/A N/A 2)2.19 MW-4 1/30/2009 264.30 9.47 254.83 N/A N/A 254.83 MW-4 2/27/2009 264.30 9.09 255.21 N/A N/A 255.21 MW-4 6/30/2009 264.30 7.84 256.46 N/A N/A 256.46 MW-4 9/30/2009 264.30 10.7 253.6 N/A N/A 253.6 MW-4 12/21/2009 264.30 9.38 254.92 N/A N/A 254.92 MW-4 3/18/2010 264.30 5.84 258.46 N/A N/A 258.46 MW-4 7/8/2010 264.30 8.91 255.39 N/A N/A 255.39 MW-4 10/21/2010 264.30 10.87 25343 N/A N/A 253.43 MW-4 1/21/2011 264.30 9.94 254.36 N/A N/A 254.36 MW-5 9/24/08 264.49 7.94 256.55 N/A N/A 256.55 MW-5 1/30/2009 264.49 6.76 257.73 N/A N/A 257.73 MW-5 2/27/2009 264.49 6.72 257.77 N/A N/A 257.77 MW-5 6/30/2009 264.49 5.98 258.51 N/A N/A 258.51 MW-5 9/30/2009 264.49 7.73 256.76 N/A N/A 256.76 MW-5 12/21/2009 264.49 6.65 257.84 N/A N/A 257.84 MW-5 3/18/2010 264.49 5.20 259.29 N/A N/A 259.29 MW-5 7/8/2010 264.49 6.82 257.67 N/A N/A 257.67 MW-5 10/21/2010 264.49 8.45 256.04 N/A N/A 256.04 MW-5 1/212011 264.49 6.99 257.5 N/A N/A 257.5 MW-6 9/30/2009 N/A 4.05 N/A N/A N/A N/A MW-6 12/21/2009 N/A 4.05 N/A N/A N/A N/A MW-6 7/8/2010 N/A 2.92 N/A N/A N/A N/A MW-6 10/21/2010 N/A 4.31 N/A N/A N/A N/A MW-6 1/21/2011 N/A 4.23 N/A N/A N/A N/A ATTACHMENT B-3 SLUG TEST RESULTS Well: 2W-4 Test Date: 1/27/2011 Test Type: Recovery (after pumping) WELL DATA SWL WD= WD= DTSP = rc = n= rw= rc (adjusted) = Le = Lw = Le/rw = H= 5.15 (ft BTOC) 9.50 (ft BTOC) 9.25 (ft BGS) 3.00 (ft BGS) 0.083 (ft) 0.30 0.33 (ft) 0.19 (ft) 4.7 (ft) 4.35 (ft) 14.24 50.00 fft) Calculation of In(Re/rw) American Cleaners (DSCA #068-0002) Hydraulic Conductivity (K) Calculation Worksheet W8R Project No. 02060496.39 CALCULATION OF K K = [(rc"2 In(Re/rw))/2Le]*(1 /t)In(yo/yt) yo = 2.650 (ft) from plot yt = 0.220 (ft) from plot t = 39.750 (minutes) from plot In(Re/rw) = 1.49 K = 5.4E-01 (ft/day) K = 1.9E-04 (cm/sec) Where: Lw < H; In(Re/rw) =[{1.1/(In(Lw/rw))}+{A+BIn((H-Lw)/rw)}/(Le/rw)1"-1= Where: Lw = H; Inf Re/rw} = [11.1/I Inf Lw/rw) t1+tC4 Le/rw)11"-1 = 1.49 1.89 Calculation of Coefficients Valuera eorarwro f Le/rw from Table of Coefficients Le/rw A 10 1.95 20 2.23 B 0.25 0.29 C 1.75 Interoolated values of A, B and C for Le/rw 14.24 1 2.07 [ 0.27 I Coefficients Table 1.491 Le/rw I A I Le/rw B Le/rw C 1.75 4 0.25 4 0.75 5 1.76 5 0.25 5 0.85 6 1.77 6 0.25 6 0.90 7 1.80 7 0.25 7 1.00 8 1.83 8 0.25 8 1.10 9 1.90 9 0.25 9 1.20 10 1.95 10 0.25 10 1.30 15 2.10 15 0.27 15 1.50 20. 2.23 20 0.29 20 1.75 25 2.40 25 0.31 25 1.90 30 2 50 30 0,35 30 1'1? 40 2.75 40 D.45 40 50 3.00 50 0.50 50 : r 0 60 3.45 60 0.52 60 70 3.70 70 0.60 70 80 3.90 80 0.65 80 :50 90_ 4,g0 90_ 0,70 90.. n5 100 4 50 100 0.75 100 .1 20 150 5.45 150 098 150 5.70 200 5.10 200 1.20 200 7 00 250 6.70 25 1.36 25D 8.66 300 7.10 300 1.50 300 8.80 400 7.75 400 1.90 400 9.90 500 8.20 500 2.20 500 10.60 600 8.50 600 2.33 600� 11.10 700 8.70 700 2.50 700 11.50 800 8.90 800 2.70 800 11.80 900 9.00 900 2.75 900 12.00 1000 9.20 1000 2.83 1000 12.40 1500 u 5n 1500 3 18 1500 12 90 Reference: Bouwe (1989), Bouwer and Rice(1976) 10 Residual Drawdown Y (ft) Conducted by: Entered/date: Checked/date: Fay 02/07/11 Bellis 2/28/11 TEST DATA tEM Logy =tiMO 0.40 .I 84 0.40 IIIIIIII:BM MAEMIIMZEILUM MWMIMMMBIMEt 4.00 =:M= MlH • r 6.00 0.28 i1!41 • 8.00 Imo* ...M Irnili= 9.00 EM2UMIMUU=IM= 10.00 l IMIU �:1[:f [•1• 14.00 =IM==INflIni= 16.00 =M=MM1==OMM 18.00 =nirml1WMIIIMItIgMl 20.00 24.00 ,=lII41 &fI 28.00 * r . MEKMMI-0.46 101l 36.00 1=I:M=Sus6mjjm Water Level Recovery vs. Time 2W-4 Recovery 0 0 0 N [O Elasped Time in minutes Well: 2W-5 (High estimate) Test Date: 1/27/2011 Test Type: Recovery (after pumping) WELL DATA SWL= WD = WD = DTSP = rc = n- rw= rc (adjusted) = Le = Lw = Le/rw = H= 4.50 (ft BTOC) 8.80 (ft BTOC) 8.50 (ft BGS) 3.00 (ft BGS) 0.083 (ft) 0.30 0.33 (ft) 0.19 (ft) 4.7 (ft) 4.30 (ft) 14.24 50.00 {ft) Calculation of In(Re/rw) American Cleaners (DSCA #068-0002) Hydraulic Conductivity (K) Calculation Worksheet W&R Project No. 02060496.39 Conducted by: Entered/date: Checked/date: Fay 02/04/11 Bellis 2/24/11 CALCULATION OF K TEST DATA K = [(rc^2 In(Re/rw))/2Le]'(1/t)In(yo/yt) yo = yt= t= In(Re/rw) _ 4.000 (ft) from plot 2.680 (ft) from plot 0.500 (minutes) from plot 1.49 K = 6.9E+00 (ft/day) K = 2.4E-03 {cm/sec( Where: Lw < H; In(Re/rw) =[{1.1/(In(Lw/rw))}+{A+BIn((H-Lw)/rw)}/(Le/rw)]^-1= Where: Lw = H; Ini Re/rw1 = t)1.1/S In( Lw/rw1)5+'C/( Le/rw!}[^-1 = 1.49 1.89 Calculation of Coefficients Value rarole for Le/rw from Table of Coefficients Le/rw A B C 10 1.95 0.25 1.3 20 2.23 0.29 1.75 Interpolated values of A B and C for Le/rw 14.24 l 2.071 0.27 Coefficients Table 1.49 I Le/rw I A I I e/rw I B I Le/rw I C I 4 1.75 4 0.25 4 0.75 5 1.76 5 0.25 5 0.85. 6 1.77 6 0.25 6 0.90 7 1.80 7 0.25 7 1.00 8 1.83 8 0.25 8 1.10 9 1.90 9 0.25 9 1.20 10 1.95 10 0.25 10 1.30 15 2.10 15 0.27 15 1.50 20 2.23 20 0.29 20 1.75 25 2.40 25 0.31 25 1.90 30 2 50 30 0.35 30 2.10 40 2.75 40 0.45 40 2.45 50 3.00 50 0 50 50 2.70 60 3.45 60 0.52 60 3.00 70 3.70 70 0.60 70 3.40 60 3.90 80 0.65 :0 3.80 90 4.20 90 0.70 90 _3.85 WO 4.50 100 0.75 r 1 4 20 150 5.45 150 0 98 150 5.70 200 6.10 200 4 20 200 7.00 250 6.70 250 1.30 250 6.00 3120 7.10 300._ 1.57 .8.64 400 7.75 400 t 90 400 9,90 500 8.20 500 2.20 500 10 E0• 600 8.50 600 2.33 .00 11.10 700 8.70 700 2.50 700 11.50 800 8.90 800 2.70 800 11.80 900 9.00 900 2.75 900 12.00 1000 9.20 1000 2.83 1000 12.40 1100 9.50 15''O 3.18 1500 12.90 Reference: Bouwe (1989), Bouwer and' 10 Residual Drawdown Y (ft) Elapsed time rn+'n• Log y y 165 WL I _ ifillIOC1 -0.25 0.60 a 6.500 0.50 0.44 2.76 7.260 0.75 0.43 2..68 7.150 1.00 0.42 2.61 7110 1.25 0.41 2.55 7.050 1.50 0.40 2.53 7.030 1.75 0.40 2.5 7.000 2.00 0.39 247 4.970 2.25 0.39 2.44 6.951 2.50 0.39 2.43 6.930 2.75 0.38 2.41 6.910 3.00 0.38 2.4 f.-',:,•: 3.50 0.38 2.38 F '• 4.00 0.37 135 6 0'D'- 4 50 0.37 2.32 6.620 5.00 0.36 2.3 6.800 5.50 0.36 2 28 -0.780 5.60 0.36 2 27 6.770 6.50 0.35 2..:7 6756 7 0.0 0.35 2.24 6.740 750 0.35 c23 0 6.73 _ 8 00 C, 35 122 fi.720 900 0.34 2.1'9 6.89d 10.00 0.33 2.16 5.680 11.00 0.33 2.14 6.640 12.00 0.33 2.12 6:620 13.00 0.32 2.1 6.600 14.00 0.32 2.09 0.590 15.00 0.32 2.08 6.580 17.00 0.31 205 6 SSD 19.00 0.31 7.172 6 620 21.00 0.29 1.97 6.470 23.00 0.29 196 6.460 25.00 0.29 1.93 6.4330 30.00 0.26 1.84 0.340 35.00 0.26 1.6 6 300 40.00 0.24 1.75 6 250 45.00 0.23 1.68 6.160 50.00 0.21 '1.62 a. ]'27"` 60.00 0.18 1.52 6.020 75.00 0.13 1.39 5 991.i 90 00 0 00 1..12 S r,:0 Water Level Recovery vs. Time 2W-5 Recovery • • • • • Elasped Time in minutes Well: 2W-5 (low estimate) Test Date: 1/27/2011 Test Type: Recovery (after pumping) WELL DATA SWL = WD = WD = DTSP = rc = n= rw= rc (adjusted) = Le = Lw = Le/rw = H= 4.50 (ft BTOC) 8.80 (ft BTOC) 8.50 (ft BGS) 3.00 (ft BGS) 0.083 (ft) 0.30 0.33 (ft) 0.19 (ft) 4.7 (ft) 4.30 (ft) 14.24 50.00 161 Calculation of In(Re/rw) American Cleaners (DSCA #068-0002) Hydraulic Conductivity (K) Calculation Worksheet W&R Project No. 02060496.39 CALCULATION OF K K = [(rc^2 In(Re/rw))/2Ler(1/t)In(yo/yt) yo = Y1= t= In(Re/rw) 2.760 (ft) from plot 2.160 (ft) from plot 9.500 (minutes) from plot 1.49 K = 2.3E-01 (ft/day) K = 8.0E-05 (cm/secl Where: Lw < H; In(Re/rw) =[(1.1/(In(Lw/rw))}+{A+BIn((H-Lw)/rw)}/(Le/rw)]^-1= Where: Lw = H; IntRe/rw)=(]1.1/(IntLw/r1v))1+{C/!Le/rwlt1 -1 = 1.49 1.89 Calculation of Coefficients Value range for Le/rw from Table of Coefficients Le/rw A B C 10 1.95 0.25 1.3 20 2.23 0.29 1.75 Interpolated values of A B and C for Le/rw 14.24 T 2.07 1 0.27 I Coefficients Table 1.491 I-Leirw C" A TLe/rw 1 B [ arw 1 C I 4 1.75 4 0.25I 4 0.75 5 1.76 5 0.25 5 0.85 6 1.77 6 0.25 6 0.90 7 1.80 7 0.25 7 1.00 8 1.83 8 0.25 8 1.10 9 1.90 9 0.25 9 1.20 10 1.95 10 0.25 10 1.30 15 2.10 15 0.27 15 1.50 20 2.23 20 0.29 20 1.75 25 2.40 25 0.31 25 1.90 30 2.50 30 0.35 30 2.10 40 2.75' 40 045 40 2.45 50 3.00 50 0.50 50 2.70 80 3.45 60 0.52 60 3.90 70 ,3 70 70 0.59 79 3.40 60 3.90 80 0.65 80 3.60 9Q 4 20 90 0 7q 90 3 8t_ 100 4.50 100 4 75 100 4.20 150 5 45 150 0.54 150 5.70 200 6.10 200 1.20 200 7.00 250 6.70 250 1.30 250 6.00 300 710 300 1.50 300 8.80 400 7 75 400 1.90 400 9.90 500 8.20 500 2.20 500 10.60 600 8.50 600 2.33 600 11.10 700 8.70 700 2.50 700 11.50 800 8.90 800 2.70 800 11.80 900 9.00 900 2.75 900 12.00 1000 9.20 1000 2.83 1000 12.40 T500 9.50 151Q 3 1.^. I 15(4 ?2 0i) 10 O.i Reference: Bouwe (1989), Bouwer and I o • Conducted by: Entered/date: Checked/date: Fay 02/04/11 Bellis 2/24/11 TEST DATA Elapsed time {min) Log y y IP WL Ift BTOC) 0.25 0.60 d..51J0 0.50 0.44 2.76 7.260 0.75 0.43 2 9 -7.160 1.00 0.42 2.61 7.1f0 1.25 0.41 2.55 7.050 1.50 0.40 2.53 7.030 1.75 0.40 2.5 7.000 2.00 0.39 2.47 5.970 2.25 0.39 2.45 6.950 2.50 0.39 2.43 b.430 2.75 0.38 2.41 5.010 3.00 0.38 2.4 6.900 3.50 0.38 2.38 0.8$0 4.00 0.37 235 5.850 4.50 0.37 2.32 6•820 5.00 0.3Q 2.3 8.800 5.50 0.36 2-25 6.7$0 5 00 4 36 227 6.970 6.50 0.35 2_25 6.70 700 0.35 2.24 5.740 7.50 0,35. 223 6.730 6.00 0.35 2 22 0.720 9.00 0 34 2 19 6.690 10.00 0,33 2.16 6.660 :1 op 0.33 2 14 664o ",". 90 0.33 2 12 631(1 13.00 0.32 21 8.600 14.00 0.32 2.09 6.590 15.00 0.32 2788 6.560 17.00 0.31 2.05 6.550 19.00 0.31 2.02 8.520 21.00 0.29 1.97 6.470 23.00 0.29 1.96 6.460 r 25.00 0.29 1.93 6.430 30.00 0.26 1.84 8.340 35.00 0.26 1.8 6.300 40.00 0.24 1.75 6.250 45.00 0.23 1.68 57189 50.00 0.21 1 E2 6.120 60.00 0.18 1.52 6.020 • 75.00 0.13 7.05 50160 90 OQ 0 09 1.22 y. 720 . Water Level Recovery vs. Time 2W-5 Recovery N el a v, CO Elasped Time in minutes •-- •- • -0 ,2 Well: 2W-6 Test Date: 1/27/2011 Test Type: Recovery (after pumping) WELL DATA SWL = WD = WD= DTSP = rc = n= w= rc (adjusted) = Le = Lw = Le/rw = H= 5.96 (ft BTOC) 12.20 (ft BTOC) 12.00 (ft BGS) 3.00 (ft BGS) 0.083 (ft) 0.30 0.33 (ft) 0.19 (ft) 4.7 (ft) 6.24 (ft) 14.24 50.00 iftl Calculation of In(Re/rw) American Cleaners (DSCA #068-0002) Hydraulic Conductivity (K) Calculation Worksheet W8R Project No. 02060496.39 Conducted by: Entered/date: Checked/date: Fay 02/07/11 Bellis 3/1/11 CALCULATION OF K TEST DATA K = [(rc^2 In(Re/rw))/2Le]*(1 /t)In(yo/yt) yo = yt= t= In(Re/rw) 6.440 (ft) from plot 5.990 (ft) from plat 0.750 (minutes) from plot 1.64 K = 8.7E-01 (ft/day) K = 3.1E-04 (cm/sec) Where: Lw < H; In(Re/rw) =[{1.1/(In(Lw/rw))}+{A+BIn((H-Lw)/rw)}/(Le/rw)]^-1= Where: Lw = H; Irs Re/rwi = I i 1.1 h Inr Lw/null)+IC/, Le/nay) I"-1 = 1.64 2.13 Calculation of Coefficients Value rarne for Le/rw from Table of Coefficients Le/rw A B C 10 1.95 0.25 1.3 20 2.23 0.29 1.75 Interpolated values of A B and C for Le/rw 14.24, j 2.07 1 0.27 1 1.49] Coefficients Table I Le/rw 1 A 1 Le/rw I B I rw T 4 1.75 4 0.25 4 0.75' 5 1.76 5 0.25 5 0.85 6 1.77 6 0.25 6 0.90 7 1.80 7 0.25 7 1.00 8 1.83 8 0.25 8. 1.10 9 1.90 9 0.25 9 1.20 10 1.95 10 0.25 10 1.30 15 2.10 15 0.27 15 1.50 20 2.23 20 0.29 20 1.75 25 2.40 25 0.31 25 1.90 30 2.50 30 0.35 30 2.10 40 2.75 40 0.45 40. 2.45 50 3.00 50 0.50 .50 2.70 60 3.45 60 0,52 50 3.00 70 3.70 70 0.60 70 3.40 80 3.90 80 0.65 80 3.60 90 420 90 0.70 90 3.851 100 4 50 100 0.75 100 4.20: 150 5 45 150 0 98 150 5.70 200 610 200 1.20 200 7.00 250 6.70 250 1.30 2E0 8.00 300 7.10 300 1.50 300 8.80 400 7.75 400 1.90 400 9.90 500 8.20 500 2.20 500 10.60 600 8.50 600 2.33 600 11.10 700 8.70 700 2.50 700 11.50 800 8.90 800 2.70 800 11.80 900 9.00 900 2.75 900 12.00 1000 9.20 1000 2.83 1000 12.40 1.SOS y'j0 iFn(i ; 18 1500 i2_o0 Reference: Bouwe (1989), Bouwer and Rice(1976) 10 Residual Drawdown Y (ft) Elapsed time 1 Log y y WL l9 B 0.25 0.81 (,.4 . 0.50 0.80 6.2/ 12 230 0.75 0.78 6.08 12.040 .11:950 1.00 0.78 5.99 1.25 0.78 5.99 11:1350 1.50 0.77 5.92 11.680 1.75 0.77 5.88 17.820 2.00 0.76 5.82 11.780 2.25 0.76 5.77 11 730 2.50 0.76 5.72 11.880 2.75 0.75 5.68 11.640 3.00 0.75 5.65 11.610 3.50 0.75 5.59 11.550 4.00 0.74 5 72 117480 4.50 0.74 5 48 11-440 5.00 0,74 5 44 11.400 5.50 0.73. 5 41 11 370 600 073 538 1f040 6.50 0.73 534 11'300 7.00 0.73 5 35 11.310 750 073 5.32 11.280 8.00 0.72 529 11:250 8.50 0.72 5 28 11.240 9.00 0.72 5.26 11.220 9.50 0.72 5.24 11.200 10.00 0.72 5.23 11190 12.00 0.71 5.18 11 1.10 14.00 0.71 5.13 11.020 16.00 0.71 5.09 11.050 18.00 0.71 5.07 11.030 20.00 0.70 • 5.04 11.000 25.00 0.70 4.97 10,930 30.00 0.69 4.94 10.900 45.00 0.69 4.88 10.840 60.00 0.68 4 8 10.760 90.00 0.67 a.71 10.870 12000 067 .-.; 10620 Water Level Recovery vs. Time 2W-6 Recovery • • • Yt O N O N N Elasped Time in minutes 1t Well: MW-2 Test Date: 1/27/2011 Test Type: Recovery (after pumping) WELL DATA SWL= WD = WD = DTSP = rc = = rw = rc (adjusted) = Le = Lw = Le/rw = H= 8.75 (ft BTOC) 28.00 (ft BTOC) 27.50 (ft BGS) 15.50 (ft BGS) 0.083 (ft) 0.30 0.33 (ft) 0.08 (ft) 9.7 (ft) 19.25 (ft) 29.39 5000 Ift) Calculation of In(Re/rw) American Cleaners (DSCA #068-0002) Hydraulic Conductivity (K) Calculation Worksheet W&R Project No. 02060496.39 CALCULATION OF K K = [(r02 In(Re/rw))/2Le]"(1/t)In(yo/yt) yo = yt = t= In(Re/rw) = 17.550 (ft) from plot 4.550 (ft) from plot 27.500 (minutes) from plot 2.44 K = 6.4E-02 (ft/day) K = 2.2E-05 Icm/sec) Where: Lw < H; In(Re/rw) _[(1.1/(In(Lw/rw))}+{A+BIn((H-Lw)/rw)}/(Le/rw)]^-1= Where: Lw = H; In' Re/rwi = In Lw/rw111+C0 Le/rw!1;^-1 = 2.44 2.94 Calculation of Coefficients Value ran•:e for Le/rw from Table of Coefficients Le/rw A B C 25 2.4 0.31 1.9 30 2.5 0.35 2.1 Interpolated values of A B and C for Le/rw 29.39 [ 2.49 [ 0.35 [ 2.08 j Coefficients Table I Le/rw I A I Le/rw I B -I Le/rw I _ C 1.75 4 0.25 4 0.7T 5 1.76 5 0.25 5 0.85 6 1.77 6 0.25 6 0.90 7 1.80 7 0.25 7 1.00 8 1.83 8 0.25 8 1.10 9 1.90 9 0.25 9 1.20 10 1.95 10 0.25 10 1.30 15 2.10 15 0.27 15 1.50 20 2.23 20 0.29 20 1.75 25 2.40 25 0.31 25 1.90 30 2.50 30 0.35 30 2.10 40 2.75 40 0.45 40 2.45 50 3.00 50 0.50 50 2.70 60 3.45 60 0.52 60 3.07 70 3.70 70 0.6E 70 3.40 84 3.90 80 0.65 80 3.60 90 4.20 90 0.70 90 3.85 100 4.50 100 0.75 100 4.20 150 5.45 150 0.98 150 5.70 200 6.10 200 1.20 200 7.00 250 6.70 250 1.30 250 8.00 300 7.10 300 1.50 300 8.80 400 7.75 400 1.90 400 9.90 500 8.20 500 2.20 500 10.60 600 8.50 600 2.33 600 11.10 700 8.70 700 2.50 700 _ _ 11.50 11.80 800 8.90 800 2.70 800 900 9.00 900 2.75 900 12.00 1000 9.20 1000 2.83 1000 12.40 1500 9.501 1500 1 18 1750 1^ 90 Residual Drawdown Y (ft) 100 10 Conducted by: Entered/date: Checked/date: Fay 02/04/11 Bellis 2/24/11 TEST DATA Elapsed time (min) Log y y (ft) WL (ft BTOC) 0.50 1.24 11.5.1 2 b.3uu 0.75 1.24 17 3 26.050 1.00 1.23 1 /.11 25.6 7r5 1.25 1.23 16.92 25.670 1.50 1.23 16.89 25.640 1.75 1.22 1678 23.36- 2.00 1.22 16.B8 25.406 2.25 1.22 18.47 25.220 2.50 1.21 15.34 25.090 2.75 1.21 16.2 24.950 3.00 1.21 16.06 24.810 3.50 1.20 15.76 24.510 4.00 1.19 15.49 24.240 4.50 1.18 15719 23.940 5.00 1.17 14.94 23.656 ::.50 117 T4.7 23.450 6.0C: ' 16 14.47 23.2.10 6 tii5 iii 15 C47.23 22980 7.00 '. 15 13.99 22.740 7 57 ' 14 13.71 22.460 '260 8 05 t 13 11715 1 5.00 111 12.96 21 710 9.50 11 1 1274 21.490 10.00 110 17.4T 21T720 11.00 1.08 11.99 20-..74 0 12.00 1.06 11.54 20.90 13.00 1.04 11.07 19.820 14.00 1.02 10.57 19.320 15.00 1.00 10.03 fa AO 16.00 0.98 3.55 1 8:3b0 17.00 0.95 6•97 17.120 18.00 0.93 8.44 17.190 19.00 0.90 7.94 1s.6c 20.00 0.87 7.42 16.170 22.00 0.82 6.56 15.310 24.00 0.76 5.75 14.540 26.00 0.71 5.17 13.920 28.00 0.66 4.55 13.300 30.00 0.59 3.53 12.650 34.00 0.43 2.89 1 f.446 38.00 0.26 18 TD3s11 42.OY 0.09 1.23 9. ,81:1 Water Level Recovery vs. Time MW-2 Recovery Reference: Bouwe (1989), Bouwer and Rice(19i 0.1 f Y° •<r.+ ey.e YI Elasped Time in minutes • ♦ f +•1 (l i i i i ATTACHMENT B-4 GEOTECHNICAL ANALYTICAL RESULTS AND SPECIFIC YIELD CALCULATIONS r• February 24, 2011 Project No. 2011-717-01 Mr. Chris Fay Withers & Ravenel Raleigh, NC cfay@withersravenel.com w£:iry-FILL eatechnics, geotechnlcal & geosynthetic testing Transmittal Laboratory Test Results American Cleaners Project 02060496.39 Please find attached the laboratory test results for the above referenced project. The tests were outlined on the Project Verification Form that was faxed to your firm prior to the testing. The testing was performed in general accordance with the methods listed on the enclosed data sheets. The test results are believed to be representative of the samples that were submitted for testing and are indicative only of the specimens which were evaluated. We have no direct knowledge of the origin of the samples and imply no position with regard to the nature of the test results, i.e. pass/fail and no claims as to the suitability of the material for its intended use. The test data and all associated project information provided shall be held in strict confidence and disclosed to other parties only with authorization by our Client. The test data submitted herein is considered integral with this report and is not to be reproduced except in whole and only with the authorization of the Client and Geotechnics. The remaining sample materials for this project will be retained for a minimum of 90 days as directed by the Geotechnics' Quality Program. We are pleased to provide these testing services. Should you have any questions or if we may be of further assistance, please contact our office. Respectively submitted, Geotechnics,chInc. Michael P. Smith Regional Manager We understand that you have a choice in your laboratory services and we thank you for choosing Geotechnics. DCN: Data Transmittal Letter Date: D28/05 Rev.: ! SIEVE AND HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) Client WITHERS & RAVENEL Client Reference AMERICAN CLEANERS Project No. 2011-717-01 2011-717-01-01 Lab ID �technias Boring No. HT-2 Depth (ft) 5-10 Sample No. 1 Soil Color LIGHT BROWN INTEGRITY IN INTEGRITY IN TESTING USCS USDA SIEVE ANALYSIS HYDROMETER cobbles gravel 1 sand silt and clay fraction cobbles gravel 1.. sand silt clay 100 90 80 70 60 m a`, 50 ii m 40 D. 30 20 10 0 12" 6" 3" 2" 1" 3/4" 3/8" #4 #10 9 1 #20 #40 #60 #140 #200 0 0 0 0 1000 100 10 Particle Diameter (mm.) 01 0.01 0.001 USCS Summary Sieve Sizes (mm Percentage Greater Than #4 Gravel 0.00 #4 To #200 Sand 76.38 Finer Than #200 Silt & Clay 23.62 USCS Symbol sm, ASSUMED USCS Classification SILTY SAND page 1 of 4 DCN: CT-S3OR DATE: 2/20108 REVISION: 5 11Serverldata drivel2011 PROJECTSI2011-717 W&R1f2011-717-01-01 SIEVEHYDIO wHeader.xlsjSheetl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net it USDA CLASSIFICATION CHART Client WITHERS & RAVENEL Client Reference AMERICAN CLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-01 10 PERCENT CLAY 20 / SAND Boring No. HT-2 Depth (ft) 5-10 Sample No. 1 Soil Color LIGHT BROWN 90 80 20 70 30 • _CLAY 60 50 A4GAI SILTY 40SANDY V CLAY CLAY 30 SILTY CLAY 4CLAY LOAM LOAM 70 vAkLOAM \LTAM +44. 10 !� LOAMY SANDY LOAM SAND technics IHiEGRItt p1 TES TING IN TESTING 40 PERCENT SILT 50 60 0 90 100 90 Particle Percent Size (mm) Finer 80 70 60 50 PERCENT SAND 40 30 20 10 0 USDA SUMMARY Actual Percentage Corrected % of Minus 2.0 mm material for USDA Classificat. Gravel 0.26 2 99.74 Sand 78.00 0.05 21.74 Silt 11.53 0.002 10.21 Clay 10.21 USDA Classification: SANDY LOAM page 2 of 4 0.00 78.20 11.56 10.24 DCN: CT-S3OR DATE: 2120/08 REVISION: 5 IIServerldata drivel2011 PROJECTS12011-717 W&R1(2011-717-01.01 SIEVEHYD10 wHeader.xls%Sheetl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net t' 1 Client Client Reference Project No. Lab ID WASH SIEVE ANALYSIS ASTM D 422.63 (SOP-S3) WITHERS & RAVENEL AMERICAN CLEANERS 2011-717-01 2011-717-01-01 Boring No. HT-2 Depth (ft) 5-10 Sample No. 1 Soil Color LIGHT BROWN technics i INTEGRITY IN TESTING' INTEGRITY- IN TESTING Minus #10 for Hygroscopic Moisture Content Tare No. Wgt.Tare + Wet Soil (gm) Wgt.Tare + Dry Soil (gm) Weight of Tare (gm) Weight of Water (gm) Weight of Dry Soil (gm) Moisture Content (%) U-1 53.10 52.74 15.65 0.36 37.09 Hydrometer Specimen Data Air Dried - #10 Hydrometer Material (gm) Corrected Dry Wt. of - #10 Material (gm) Weight of - #200 Material (gm) Weight of -#10 ; + #200 Material (gm) 1.0 J-FACTOR (%FINER THAN #10) 100.00 99.04 23.46 75.58 0.9974 Tare No. Wgt.Tare + Air Dry Soil (gm) Weight of Tare (gm) Air Dried Wgt. Total Sample (gm) Total Dry Sample Weight (gm) NA 100.26 0.00 100.26 99.30 Soil Specimen Data Dry Weight of Material Retained on #10 (gm) Corrected Dry Sample Wt - #10 (gm) 0.26 99.04 Sieve Size Sieve Opening (mm) Wgt.of Soil Retained (gm) Percent Retained (%) Accumulated Percent Retained (%) Percent Finer (%) Accumulated Percent Finer (%) 12" 300 0.00 0.0 0.0 100.0 100.0 6" 150 0.00 0.0 0.0 100.0 100.0 3" 75 0.00 0.0 0.0 100.0 100.0 2" 50 0.00 0.0 0.0 100.0 100.0 1 1/2" 37.5 0.00 0.0 0.0 100.0 100.0 1" 25.0 0.00 0.0 0.0 100.0 100.0 3/4" 19.0 0.00 0.0 0.0 100.0 100.0 1/2" 12.5 0.00 0.0 0.0 100.0 100.0 3/8" 9.50 0.00 0.0 0.0 100.0 100.0 #4 4.75 0.00 0.0 0.0 100.0 100.0 #10 2.00 0.26 0.3 0.3 99.7 99.7 #20 0.85 5.92 6.0 6.0 94.0 93.8 #40 0.425 22.52 22.7 28.7 71.3 71.1 #60 0.250 27.26 27.5 56.2 43.8 43.6 #140 0.106 17.27 17.4 73.7 26.3 26.3 #200 0.075 2.61 2.6 76.3 23.7 23.6 Pan - 23.46 23.7 100.0 - 1 - Notes : Tested By SD Date page 3 of 4 DCN: CT-S3OR DATE: 2/20/08 REVISION: 5 2.17.11 Checked By J R ; Date 2 .2- I. / it 11Serverldata drive12011 PROJECTS12011-717 W&R1[20/I-717-01-01 S/EVEHYD10 wHeader.x/s]Sheetl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net i u .+: 11 HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) Client WITHERS & RAVENEL Boring No. HT-2 Client Reference AMERICAN CLEANERS Depth (ft) 5-10 Project No. 2011-717-01 Sample No. 1 Lab ID 2011-717-01-01 Soil Color LIGHT BROWN technics mt�mresnec 1NIEGRITY IN' TESTING. Elap cd R Temp. Composite R N K Diameter N' Time Measured (° C) Correction Corrected (%) Factor (mm) (% ) (min) 0 NA NA NA NA NA NA NA NA 2 25.0 23.5 5.29 19.7 19.7 0.01290 0.0319 19.6 5 22.0 23.5 5.29 16.7 16.7 0.01290 0.0205 16.7 15 20.0 23.5 5.29 14.7 14.7 0.01290 0.0120 14.7 30 19.0 23.5 5.29 13.7 13.7 0.01290 0.0085 13.7 60 18.0 23.5 5.29 12.7 12.7 0.01290 0.0061 12.7 250 16.0 23.8 5.15 10.8 10.8 0.01285 0.0030 10.8 1440 15.0 23.2 5.43 9.6 9.6 0.01294 0.0013 9.5 Soil Specimen Data Other Corrections Wgt. of Dry Material (gm) Weight of Deflocculant (gm) 99.04 Hygroscopic Moisture Factor 0.990 5.0 a - Factor 0.99 Percent Finer than # 10 99.74 Specific Gravity 2.70 Assumed Notes: Tested By SC Date 2.15.11 Checked By -1 (2._;-3 Date •z. Z 1 . i page 4 of 4 DCN: CT-S3OR DATE: 2t20I08 REVISION: 5 IlServerldata drtve12011 PROJECTSI2011-717 W&RI[2011-717-01-01 SIEVEHYD10 wHeaderxls]Sheeti 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net ti SIEVE AND HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) Client WITHERS & RAVENEL Client Reference AMERICAN DRYCLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-02 Boring No. HT-3 Depth (ft) 5-10 Sample No. 2 • Soil Color BROWN technics INTEGRITY IN TESTING INTEGRITY IN TESTING USCS USDA SIEVE ANALYSIS HYDROMETER cobbles gravel sand 1 silt and clay fraction cobbles gravel sand silt clay 100 90 80 70 .3 60 `m 50 LL 40 a 30 20 10 0 12" 6" 3" 2" 1" 3/4" 3/8" #4 #10 #20 #40 #60 #140 #200 1000 100 10 Particle Diameter (mm) 01 0.01 0.001 USCS Summary Sieve Sizes (mm) Percentage Greater Than #4 Gravel 0.95 #4 To #200 Sand 75.71 Finer Than #200 Silt & Clay 23.34 USCS Symbol sm, ASSUMED USCS Classification SILTY SAND page 1 of 4 DCN: CT-S3OR DATE:2/20108 REVISION: 5 llServerldata drivel2011 PROJECTS12011-717W&RI[2011-717-01-02 SIEVEHYD10 wHeaderxlsjSheeti 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net i USDA CLASSIFICATION CHART Client WITHERS & RAVENEL Client Reference AMERICAN DRYCLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-02 100 PERCENT CLAY 90 80 70 90 60 50 PERCENT SAND 40 Boring No. HT-3 Depth (ft) 5-10 Sample No. 2 Soil Color BROWN 30 echnics INTEGRITYM TESTING. ' IN TESTING PERCENT SILT 20 70 Particle Percent USDA SUMMARY Actual Size (mm) Finer Percentage 80 10 0 Corrected % of Minus 2.0 mm material for USDA Classificat. Gravel 4.99 2 95.01 Sand 74.39 0.05 20.62 Silt 9.83 0.002 10.80 Clay 10.80 USDA Classification: SANDY LOAM 0.00 78.29 10.34 11.37 page 2 of 4 DCN: CT-S3OR DATE: 2I20108 REVISION: 5 11Serverldata drive12011 PROJECTSI2011-717W&RI12011-717-01-02 SIEVEHYDIO wHeaderxls]Sheetl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net r • I. Client Client Reference Project No. Lab ID WASH SIEVE ANALYSIS ASTM D 422-63 (SOP-S3) WITHERS & RAVENEL AMERICAN DRYCLEANERS 2011-717-01 2011-717-01-02 �echnics Boring No. HT-3 Depth (ft) 5-10 Sample No. 2 Soil Color BROWN 1NTf4kltt'IN TESTING ,NTEGRST1"1N TESTING Minus #10 for Hygroscopic Moisture Content Tare No. Wgt.Tare + Wet Soil (gm) Wgt.Tare + Dry Soil (gm) Weight of Tare (gm) Weight of Water (gm) Weight of Dry Soil (gm) Moisture Content (%) V-1 35.55 35.45 21.84 0.10 13.61 Hydrometer Specimen Data Air Dried - #10 Hydrometer Material (gm) Corrected Dry Wt. of - #10 Material (gm) Weight of - #200 Material (gm) Weight of - #10 ; + #200 Material (gm) 0.7 J-FACTOR (%FINER THAN #10) 50.00 49.64 12.20 37.44 0.9501 Tare No. Wgt.Tare + Air Dry Soil (gm) Weight of Tare (gm) Air Dried Wgt. Total Sample (gm) Total Dry Sample Weight (gm) 216 473.52 170.69 302.83 300.73 Soil Specimen Data Dry Weight of Material Retained on #10 (gm) 15.00 285.73 Corrected Dry Sample Wt - #10 (gm) Sieve Size Sieve Opening (mm) Wgt.of Soil Retained Percent Retained Accumulated Percent Retained Percent Finer Accumulated Percent Finer (gm) %) (%) (%) (%) 12" 300 0.00 0.0 0.0 100.0 100.0 6" 150 0.00 0.0 0.0 100.0 100.0 3" 75 0.00 0.0 0.0 100.0 100.0 2" 50 0.00 0.0 0.0 100.0 100.0 1 1 /2" 37.5 0.00 0.0 0.0 100.0 100.0 1" 25.0 0.00 0.0 0.0 100.0 100.0 3/4" 19.0 0.00 0.0 0.0 100.0 100.0 1/2" 12.5 0.00 0.0 0.0 100.0 100.0 3/8" 9.50 0.00 0.0 0.0 100.0 100.0 #4 4.75 2.85 0.9 0.9 99.1 99.1 #10 2.00 12.15 4.0 5.0 95.0 95.0 107. 0.85 5.28 10.6 10.6 89.4 84.9 #40 0.425 13.66 27.5 38.2 61.8 58.8 #60 0.250 9.90 19.9 58.1 41.9 39.8 #140 0.106 7.33 14.8 72.9 27.1 25.8 #200 0.075 1.27 2.6 75.4 24.6 23.3 Pan - 12.20 24.6 100.0 - - Notes : Tested By SD Date page 3 of 4 DCN: CT-S3OR DATE: 2120108 REVISION: 5 2/24/2011 Checked By 61Yl Date Z Z� '(( llServerldata drive12011 PROJECTS12011-717WMR1E2011-717-01-02 SIEVEHYD10 wHeader.xls]Sheetl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) Client WITHERS & RAVENEL Client Reference AMERICAN DRYCLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-02 Geo technics Boring No. HT-3 Depth (ft) 5-10 Sample No. 2 Soil Color BROWN iwreexn�Y�w.nmea 1NTEGRI�':S"IN. TESTING elapsed R Temp. Composite R N K Diameter N' Time Measured (° C) Correction Corrected (%) Factor (mm) (% ) (min) 0 NA NA NA NA NA NA NA NA 2 15.0 23.1 5.47 9.5 19.0 0.01296 0.0341 18.1 5 15.0 23.1 5.47 9.5 19.0 0.01296 0.0216 18.1 15 14.0 23.1 5.47 8.5 17.0 0.01296 0.0125 16.2 30 14.0 23.1 5.47 8.5 17.0 0.01296 0.0089 16.2 60 13.0 23.1 5.47 7.5 15.0 0.01296 0.0063 14.3 250 12.0 22.5 5.75 6.3 12.5 0.01305 0.0031 11.8 1440 12.0 20.2 6.80 5.2 10.4 0.01341 0.0013 9.9 Soil Specimen Data Wgt. of Dry Material (gm) Weight of Deflocculant (gm) Notes: page 4 of 4 Other Corrections 49.64 Hygroscopic Moisture Factor 0.993 5.0 a - Factor 0.99 Percent Finer than # 10 95.01 Specific Gravity 2.70 Assumed Tested By JBD Date 2/22/2011 Checked By 11Serverldata drive12011 PROJECTSI2011-717W&RII2011-717-01-02 SIEVEHYDIO wHeader.xls)Sheet1 DCN: CT-S3OR DATE: 2120108 REVISION: 5 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net Date Z 2.4 Client Client Reference Project No. Lab ID SIEVE AND HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) WITHERS & RAVENEL AMERICAN CLEANERS 2011-717-01 2011-717-01-03 �echnics Boring No. HT-7 Depth (ft) 5-10 Sample No. 3 Soil Color LIGHT BROWN INTEGRITY IN TESTING INTEGRITY TESTING USCS USDA SIEVE ANALYSIS HYDROMETER cobbles gravel I sand ] silt and clay fraction cobbles gravel sand 1 silt clay 12" 6" 3" 2" 1" 3/4" 3/8" #4 #10 #20 #40 #60 #140 #200 100 90 80 70 a) 3 60 ro 50 LL J40 30 20 10 0 1000 100 10 Particle Diameter (mm) 01 0.01 0.001 USCS Summary Sieve Sizes (mml Percentage Greater Than #4 Gravel 0.00 #4 To #200 Sand 70.55 Finer Than #200 Silt & Clay 29.45 USCS Symbol sm, ASSUMED USCS Classification SILTY SAND page 1 of 4 DCN: CT-S3OR DATE: 2120108 REVISION: 5 l Serverldata drivel2011 PROJECTS12011-717 W&R1(2011-717-01-03 SIEVEHYD10 wHeader.xlsjSheet1 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net Size (mm) Finer USDA CLASSIFICATION CHART Client WITHERS & RAVENEL Client Reference AMERICAN CLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-03 PERCENT CLAY 20 40 30 80 70 90 �echni+�s Boring No. HT-7 Depth (ft) 5-10 Sample No. 3 Soil Color LIGHT BROWN 10 20 30 CLAY AVAIZA, / SILTY SANDY CLAY CLAY i AM 60 50 AMID ■ LOAM V\A 'SANDY CLA LO M SANDY LOAM 10alkI/ j SAND SAND i f// ,\ 100 90 80 70 CLAY LOAM SILTY CLAY LOAM 40 PERCENT SILT 50 60 60 50 70 SILT LOAM �rEaxm �ro TESTING INTEGRITY NSt TESTING 80 PERCENT SAND 40 Particle Percent USDA SUMMARY Actual Percentage 30 20 SILT 10 90 0 Corrected % of Minus 2.0 mm material for USDA Classificat. Gravel 0.89 2 99.11 Sand 73.69 0.05 25.42 Silt 18.14 0.002 7.27 Clay 7.27 page 2 of 4 USDA Classification: SANDY LOAM 0.00 74.35 18.31 7.34 DCN: CT-S3OR DATE: 2/20/08 REVISION: 5 11Serverldata drwe12011 PROJECTS12011-717 W&R1f2011-717-01-03 SIEVEHYDIO wHeader.xls1Sheeti 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net Client Client Reference Project No. Lab ID WASH SIEVE ANALYSIS ASTM D 422-63 (SOP-S3) WITHERS & RAVENEL AMERICAN CLEANERS 2011-717-01 2011-717-01-03 Boring No. HT-7 Depth (ft) 5-10 Sample No. 3 Soil Color LIGHT BROWN technics INTEGRITY INTEGRITY IN TESTING Minus #10 for Hygroscopic Moisture Content Tare No. Wgt.Tare + Wet Soil (gm) Wgt.Tare + Dry Soil (gm) Weight of Tare (gm) Weight of Water (gm) Weight of Dry Soil (gm) Moisture Content (%) P-1 46.32 45.61 15.72 0.71 29.89 Hydrometer Specimen Data Air Dried - #10 Hydrometer Material (gm) Corrected Dry Wt. of - #10 Material (gm) Weight of - #200 Material (gm) Weight of - #10 ; + #200 Material (gm) 2.4 J-FACTOR (%FINER THAN #10) 100.00 97.68 29.03 68.65 0.9911 Tare No. Wgt.Tare + Air Dry Soil (gm) Weight of Tare (gm) Air Dried Wgt. Total Sample (gm) Total Dry Sample Weight (gm) 213 293.37 173.18 120.19 117.43 Soil Specimen Data Dry Weight of Material Retained on #10 (gm) Corrected Dry Sample Wt - #10 (gm) 1.05 116.38 Sieve Size Sieve Opening (mm) Wgt.of Soil Retained Percent Retained Accumulated Percent Retained Percent Finer Accumulated Percent Finer (gm) (%) (%) (%) (%) 12" 300 0.00 0.0 0.0 100.0 100.0 6" 150 0.00 0.0 0.0 100.0 100.0 3" 75 0.00 0.0 0.0 100.0 100.0 2" 50 0.00 0.0 0.0 100.0 100.0 1 1 /2" 37.5 0.00 0.0 0.0 100.0 100.0 1" 25.0 0.00 0.0 0.0 100.0 100.0 3/4" 19.0 0.00 0.0 0.0 100.0 100.0 1/2" 12.5 0.00 0.0 0.0 100.0 100.0 3/8" 9.50 0.00 0.0 0.0 100.0 100.0 #4 4.75 0.00 0.0 0.0 100.0 100.0 #10 2.00 1.05 0.9 0.9 99.1 99.1 #20 0.85 1.80 1.8 1.8 98.2 97.3 #40 0.425 15.99 16.4 18.2 81.8 81.1 #60 0.250 24.27 24.8 43.1 56.9 56.4 #140 0.106 22.99 23.5 66.6 33.4 33.1 #200 0.075 3.60 3.7 70.3 29.7 29.5 Pan - 29.03 29.7 100.0 - - Notes : Tested By SC Date page 3 of 4 DCN: CT-S3OR DATE: 2120/08 REVISION: 5 2/17/2011 Checked By Date Z • 2- (• 1 11Serverldata drivel2011 PROJECTS12011-717 W&RI(2011-717-01-03 SIEVEHYD10 wHeader.xls]Sheefl 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net HYDROMETER ANALYSIS ASTM D 422-63 (SOP-S3) Client WITHERS & RAVENEL Client Reference AMERICAN CLEANERS Project No. 2011-717-01 Lab ID 2011-717-01-03 �echnics Boring No. HT-7 Depth (ft) 5-10 Sample No. 3 Soil Color LIGHT BROWN INTEGRITY IN TESTING - INTEGRITY IN TESTING - Elapsed Elapsed R Temp. Composite R N K Diameter N' Time Measured (° C) Correction Corrected (%) Factor (mm) (% ) (min) 0 NA NA NA NA NA NA NA NA 2 26.0 23.6 5.25 20.8 21.0 0.01288 0.0316 20.8 5 23.0 23.6 5.25 17.8 18.0 0.01288 0.0204 17.8 15 20.0 23.6 5.25 14.8 15.0 0.01288 0.0120 14.8 30 19.0 23.6 5.25 13.8 13.9 0.01288 0.0085 13.8 60 16.0 23.6 5.25 10.8 10.9 0.01288 0.0061 10.8 250 13.0 23.9 5.11 7.9 8.0 0.01284 0.0031 7.9 1440 12.0 23.2 5.43 6.6 6.7 0.01294 0.0013 6.6 Soil Specimen Data Wgt. of Dry Material (gm) Weight of Deflocculant (gm) Notes: Other Corrections 97.68 Hygroscopic Moisture Factor 0.977 5.0 a - Factor 0.99 PercentFiner than # 10 99.11 Specific Gravity 2.70 Assumed Tested By SC Date 2/15/2011 Checked By JR-S Date 2.2 I- l I page 4 of 4 DON: CT-S30R DATE: 2120108 REVISION: 5 UServerldata drive12011 PROJECTS12011.717W&Rl[2011-717-01-03 SIEVEHYDIO wHeader.xlsjSheet1 2200 Westinghouse Blvd. - Suite 103 - Raleigh, NC 27604 - Phone (919) 876-0405 - Fax (919) 876-0460 - www.geotechnics.net 1 LINKS Review your prajett results through Total Access Have a Question:) Ask y Expert r Visit us at: ......;y3.y..,:.r.?„._,,y...,)„.,,),n,.,, "..forri.,,,.: THE LEADER IN ENVIRONMENTAL TESTING ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Pensacola 3355 McLemore Drive Pensacola, FL 32514 Tel: (850)474-1001 TestAmerica Job ID: 400-53610-1 TestAmerica Sample Delivery Group: Withers and Ravenel Client Project/Site: American Cleaners For: Geotechnics Inc. 2200 Westinghouse Blvd. Raleigh, North Carolina 27604 Attn: George Moyer Authorized for release by: 2/9/2011 2:52 PM Carolyn Hooper Project Manager I carolyn.hooper@testamericainc.com Results relate only to the items tested and the sample(s) as received by the laboratory. The test results in this report meet all 2003 NELAC requirements for accredited parameters, exceptions are noted in this report. Pursuant to NELAC, this report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Page 1 of 13 02/09/2011 0 Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Table of Contents Cover Page 1 Table of Contents 2 Sample Summary 3 Detection Summary 4 Client Sample Results 5 Definitions 6 Method Summary 7 Chronicle 8 QC Sample Results 9 QC Association 10 Chain of Custody 11 Sample Receipt Checklist 12 Certification Summary 13 TestAmerica Pensacola Page 2 of 13 02/09/2011 Sample Summary Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners Lab Sample ID 400-53610-1 400-53610-2 400-53610-3 Client Sample ID HT-2, 5-10' HT-3, 5-10' HT-Y, 5-10' Matrix Collected Received Solid 01/28/11 13:00 02/03/11 10:30 Solid 01/28/11 13:00 02/03/11 10:30 Solid 01/28/11 13:00 02/03/11 10:30 TestAmerica Pensacola Page 3 of 13 02/09/2011 1 Detection Summary Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Client Sample ID: HT-2, 5-10' Lab Sample ID: 400-53610-1 CAnalyte Result Qualifier RL MDL Unit Dil Fac D Method Total Organic Carbon 0.12 0.10 0.079 Percent Prep Type 1 WALKLEY BLACK Total/NA Client Sample ID: HT-3, 5-10' Lab Sample ID: 400-53610-2 CAnalyte Result Qualifier RL MDL Unit DII Fac D Method Prep Type Total Organic Carbon 0.17 0.10 0.079 Percent 1 WALKLEY BLACK Total/NA Client Sample ID: HT-7, 5-10' Lab Sample ID: 400-53610-3 Analyte Result Qualifier Total Organic Carbon 0.088 J RL MDL Unit Dil Fac D Method Prep Type 0.10 0.079 Percent 1 WALKLEY BLACK Total/NA TestAmerica Pensacola Page 4 of 13 02/09/2011 Analytical Data Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Client Sample ID: HT-2, 5-10' Date Collected: 01 /28/11 13:00 Date Received: 02/03/11 10:30 Lab Sample ID: 400-53610-1 Matrix: Solid General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed D11 Fac Total Organic Carbon 0.12 0.10 0.079 Percent 02/08/11 13:30 1 Client Sample ID: HT-3, 5-10' Date Collected: 01 /28111 13:00 Date Received: 02/03/11 10:30 General Chemistry Analyte Total Organic Carbon Result Qualifier Ma"" itt-01 3 .� v Lab Sample ID: 400-53610-2 "�11 r"; Matrix: Solid , Cri RL MDL Unit D Prepared Analyzed Dil Fac 0.17 0.10 0.079 Percent 02/08/11 13:30 1 Client Sample ID: HT-7, 5-10' Date Collected: 01/28/11 13:00 Date Received: 02/03/11 10:30 Lab Sample ID: 400-53610-3 Matrix: Solid General Chemistry Analyte Total Organic Carbon Result Qualifier 0.088 J RL MDL Unit 0.10 0.079 Percent D Prepared Analyzed Dil Fac 02/08/11 13:30 1 TestAmerica Pensacola Page 5 of 13 02/09/2011 Qualifier Definition/Glossary Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Qualifiers General Chemistry Qualifier Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary Glossary Glossary Description i Listed under the "D" column to designate that the result is reported on a dry weight basis. TestAmerica Pensacola Page 6 of 13 02/09/2011 6 Ui i Method Summary Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Method Method Description WALKLEY BLACK Organic Carbon, Total (TOC) Protocol References: MSA = "Methods Of Soil Analysis, Chemical And Microbiological Properties", Part 2, 2nd Ed., 1982 And Subsequent Revisions. Laboratory References: TAL PEN = TestAmerica Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Protocol MSA Laboratory TAL PEN TestAmerica Pensacola Page 7 of 13 02/09/2011 Lab Chronicle Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners Client Sample ID: HT-2, 5-10' Date Collected: 01/28/11 13:00 Date Received: 02/03/11 10:30 Prep Type Total/NA Batch Batch Type Method Analysis WALKLEY BLACK Run SDG: Withers and Ravenel Lab Sample ID: 400-53610-1 ' z' Matrix: Solid Dilution Batch Prepared Factor Number Or Analyzed Analyst Lab 1 125552 02/08/11 13:30 WG TestAmerica Pensacola Client Sample ID: HT-3, 5-10' Date Collected: 01/28/11 13:00 Date Received: 02/03/11 10:30 Lab Sample ID: 400-53610-2 Matrix: Solid rkti Prep Type Batch Batch Type Method Run Dilution Batch Prepared Factor Number Or Analyzed Analyst Lab Total/NA Analysis WALKLEY 1 125552 02/08/11 13:30 WG TestAmerica Pensacola BLACK Client Sample ID: HT-7, 5-10' Date Collected: 01/28111 13:00 Date Received: 02/03/11 10:30 Prep Type Batch Batch Type Method Run Lab Sample ID: 400-53610-3 Matrix: Solid Dilution Batch Prepared Factor Number Or Analyzed Analyst Lab Total/NA Analysis WALKLEY 1 125552 02/08/11 13:30 WG TestAmerica Pensacola BLACK TestAmerica Pensacola Page 8 of 13 02/09/2011 8 Quality Control Data Client: Geotechnics Inc. TestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel Method: WALKLEY BLACK - Organic Carbon, Total (TOC) Lab Sample ID: MB 400-125552/1 Matrix: Solid Analysis Batch: 125552 Analyte Total Organic Carbon Lab Sample ID: LCS 400-125552/2 Matrix: Solid Analysis Batch: 125552 Client Sample ID: MB 400-125552/1 Prep Type: Total/NA MB MB Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac <0.10 0.10 0.079 Percent 02/08/11 13:30 1 Client Sample ID: LCS 400-125552/2 Prep Type: Total/NA Spike LCS LCS % Rec. Analyte Added Result Qualifier Unit D % Rec Limits Total Organic Carbon 0.260 0.313 Percent 120 65 -126 TestAmerica Pensacola Page 9 of 13 02/09/2011 9 QC Association Summary Client: Geotechnics Inc. lestAmerica Job ID: 400-53610-1 Project/Site: American Cleaners SDG: Withers and Ravenel General Chemistry Analysis Batch: 125552 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch MB 400-125552/1 400-53610-3 LCS 400-125552/2 MB 400-125552/1 HT-7, 5-10' LCS 400-125552/2 Total/NA Solid WALKLEY BLACK Total/NA Solid WALKLEY BLACK Total/NA Solid WALKLEY BLACK 400-53610-1 HT-2, 5-10'. Total/NA Solid WALKLEY BLACK 400-53610-2 HT-3, 5-10' Total/NA Solid WALKLEY BLACK 10 TestAmerica Pensacola Page 10 of 13 02/09/2011 u C Cf George Moyer r', From: "George Moyer" <gmoyer@geotechnics.net> To: <carolyn.hooper@testamericainc.com> Sent: Tuesday, February 01, 2011 2:47 PM Subject: Geotechnics - three more Walkley Black Tests Carolyn, Page 1 of 1 I have three more samples that require the Walkley Black test. Our customer is Withers and Ravenel for American Cleaners. First sample is HT-2 , 5-10' (our number is 2011-717-01-01) 2nd sample is HT-3, 5-10' (our number is 2011-717-01-02) 3rd sample is HT-7, 5-10' (our number is 2011-717-01-03) I will be sending to your attention ground today. I will get you the date the samples were gathered. Thanks, George �z�,3//// )0-`3C- Page 11 of 13 2/1/2011 02/09/2011 Login Sample Receipt Check List Client: Geotechnics Inc. Job Number: 400-53610-1 SDG Number: Withers and Ravenel Login Number: 53610 Creator: Chea, Vanda List Number: 1 Question List Source: TestAmerica Pensacola T / F/ NA Comment r Radioactivity either was not measured or, if measured, is at or below N/A background The cooler's custody seal, if present, is intact. N/A The cooler or samples do not appear to have been compromised or N/A tampered with. Samples were received on ice. N/A Cooler Temperature is acceptable. True Cooler Temperature is recorded. N/A COC is present. True COC is filled out in ink and legible. True COC is filled out with all pertinent information. True Is the Field Sampler's name present on COC? True There are no discrepancies between the sample !Ds on the containers and True the COC. Samples are received within Holding Time. True Sample containers have legible labels. True Containers are not broken or leaking. True Sample collection date/times are provided. True Appropriate sample containers are used. True Sample bottles are completely filled. True Sample Preservation Verified True There is sufficient vol. for all requested analyses, incl. any requested True MS/MSDs VOA sample vials do not have headspace or bubble is <6mm (1/4") in N/A diameter. If necessary, staff have been informed of any short hold time or quick TAT True needs Multiphasic samples are not present. True Samples do not require splitting or compositing. True TestAmerica Pensacola SX date and time is not listed • Page 12 of 13 02/09/2011 i Client: Geotechnics Inc. Project/Site: American Cleaners Certification Summary TestAmerica Job ID: 400-53610-1 ;11-21 SDG: Withers and Ravenel Laboratory Authority Program EPA Region Certification ID ' Expiration Date TestAmerica Pensacola USDA TestAmerica Pensacola Alabama State Program TestAmerica Pensacola Arizona State Program 4 9 P330-10-00407 40150• AZ0710 12/10/13 06/30/11 01/11/12 TestAmerica Pensacola Arkansas State Program 6 88-0689 09/01/11 TestAmerica Pensacola Florida NELAC 4 E81010 06/30/11 TestAmerica Pensacola Georgia Georgia EPD 4 NIA 06/30/11 TestAmerica Pensacola Illinois NELAC 5 200041 10/09/11 TestAmerica Pensacola Iowa State Program 7 367 08/01/12 TestAmerica Pensacola Kansas NELAC 7 E-10253 10/31/11 TestAmerica Pensacola Kentucky Kentucky UST 4 53 08/25/11 TestAmerica Pensacola Louisiana NELAC 6 30748 06/30/11 TestAmerica Pensacola Maryland State Program 3 233 12/31/11 TestAmerica Pensacola Massachusetts State Program 1 M-FL094 06/30/11 TestAmerica Pensacola Michigan State Program 5 9912 06/30/11 TestAmerica Pensacola New Hampshire NELAC 1 2505 08/16/11 TestAmerlca Pensacola New Jersey NELAC 2 FL006 06/30/11 TestAmerica Pensacola North Carolina State Program 4 314 12/31/11 TestAmerica Pensacola Oklahoma State Program 6 9810 08/31/11 TestAmerica Pensacola Pennsylvania NELAC 3 68-00467 12/31/11 TestAmerica Pensacola Rhode Island State Program 1 LA000307 12/30/11 TestAmerica Pensacola South Carolina State Program 4 96026 06/30/11 TestAmerica Pensacola Tennessee State Program 4 TN02907 06/30/11 TestAmerlca Pensacola Texas NELAC 6 T104704286-09-1 09/30/11 TestAmerica Pensacola Virginia State Program 3 00008 06/30/11 TestAmerica Pensacola Washington State Program 10 C915 08/08/11 TestAmerica Pensacola West Virginia West Virginia DEP 3 136 06/30/11 Accreditation may not be offered or required for all methods and analytes reported in this package. Please contact your project manager for the laboratory's current list of certified methods and analytes. *Any expired certifications in this list are currently pending renewal and are considered valid. TestAmerica Pensacola Page 13 of 13 02/09/2011 $ L-.American Cleaners-068-0002 Specific Yield Calculation for HT-2 c) 100 EXPLANATION 5 90 Line of equal specific yield Interval 1 and 5 percent 80 Particle size (mm) Sand 2-0.0625 Silt 0.0625-0.004 70 Clay <0.004 30 ACTIAIr 4111■... 11101r1TATM41"\2° Altv VAVAIP 10 Silt size (percent) FIGURE 4.8. Textural classification triangle for unconsolidated materials showing the relation between particle size and specific yield. SOURCE: A. I. Johnson, U.S. Geolog- ical Survey Water Supply Paper 1662-D, 1967. JOHNSON, A. I. Specific Yield —Compilation of Specific Yields for Various Materi- als. U.S. Geological Survey Water Supply Paper 1662-D, 1967, 74 pp. Source: Fetter, C.W. Jr., 1980, Applied Hydrogeoloby Charles E. Merril Publishing Company, Columbus Ohio, 488p. Specific Yield o 20% American Cleaners-068-0002 Specific Yield Calculation for HT-3 c TUD EXPLANATION 5 90 Line of equal specific yield interval 1 and 5 percent 80 Particle size (min) Sand 2-0.0625 Silt 0.0625-0.004 70 Clay <0.004 60 0 mca , / 50 0- / -1 40 30 20 O ‘3.O h0 tOO q)O 0O 10 Silt size (percent) FIGURE 4:8. Textural classification triangle for unconsolidated materials showing the relation between particle size and specific yield. SOURCE: A. 1. Johnson, U.S. Geolog- ical Survey Water Supply Paper 1662-D, 1967. JOHNSON, A.I. Specific Weld —Compilation of Specific Welds for Various Materi- als. U.S. Geological Survey Water Supply Paper 1662-D, 1967, 74 pp. Source: Fetter, C.W., Jr., 1980, Applied Hydrogeolociy. Charles E. Merril Publishing Company, Columbus Ohio, 488p. American Cleaners-068-0002 Specific Yield Calculation for HT-7 EXPLANATION 5 90 Line of equal specific yield Interval ) and 5 percent 80 Particle size (mm) Sand 2-0.0625 Silt 0.0625-0.004 70 Clay <0.004 Specific Yield of 23% 0 • O `O BO O �O ho ko ,`o co O Silt size (percent) FIGURE 4.8. Textural classification triangle for unconsolidated materials showing the relation between particle size and specific yield. SOURCE: A. 1. Johnson, U.S. Geolog-. Ica! Survey Water Supply Paper 1•662-D, 1967. JOHNSON, A. I. Specific Yield —Compilation of Specific Yields for Various Materi- als. U.S. Geological Survey Water Supply Paper 1662-0, 1967, 74 pp. Source: Fetter, C.W., Jr., 1980, Applied Hydrogeoiogy Charles E. Merril Publishing Company, Columbus Ohio, 488p. ATTACHMENT C and D INJECTION RATIONALE AND FLUID COMPOSITION ri)ADVENTUS Proven Soil, Sediment, and Groundwater Remedietion Technologies Via Email: Bellis, Brian <bbellis@withersravenel.com> March 18 , 2011 Brian Bellis, PG WITHERS RAVENEL EHC The o-ig:nal irjectab:e i'SCR Reagent for Grouncwaer Applications 1410 Commonwealth Drive, Suite 101 Wilmington, NC 28403 Phone: 910.256.9277 I Fax: 910.256.2584 Direct: 919.238.0313 I Mobile: 919.201.5768 Subject: Treatment of CVOCs using ISCR Technology Former American Cleaners, Chapel Hill, North Carolina Adventus Proposal No. AAI11-160 Dear Mr. Bellis: Please find herewith a conceptual remedial design and cost estimate for employing EHC® in situ chemical reduction (ISCRTM) technology to remove chlorinated volatile organic compounds (CVOCs) from groundwater at the above referenced site (the Site). The cost estimate includes EHC amendments and delivery (estimated); Adventus on -site field support for the initiation of the project is presented as a recommended option. TECHNOLOGY BACKGROUND EHC® is the original, patented combination of controlled -release carbon and zero valent iron (ZVI) particles used for stimulating in situ chemical reduction (ISCR) of otherwise persistent organic compounds in groundwater. Variations of these materials have been used to treat over 9,000,000 tons of soil/sediment impacted by recalcitrant compounds as part of the company's DARAMEND® bioremediation technology. Both EHC and DARAMEND are proven, established technologies that have been used at hundreds of sites to date throughout the world. The technologies have been accepted and many Federal, State and regional regulatory authorities within the USA/Canada (Figure la) Europe (Figure 1b) and other places around the world. EHC is available as a solid or liquid material that can be easily injected into the subsurface environment in a variety of ways, based on site -specific designs. Application methods include direct mixing, hydraulic fracturing, pneumatic fracturing, and injection of slurries or liquids. Direct placement in trenches and excavations are also reliable application methods. 1435 Morris Ave, Suite 2 • Union, NJ 07083 • Tel: 908.688.8543 • Fax: 908.688.8563 www.AdventusGroup.com t`( ADVENTUS EHC Design & Cost Estimate +.Y • Pe VA NS PIA #A9?AN Figure la. Adventus Projects - North America Figure 1b. Adventus Projects — "Europe" 5 Provinces, 48 States > 2,000 projects 17 Countries ca. 100 projects Following placement of EHC into the subsurface environment, a number of physical, chemical and microbiological processes combine to create very strong reducing conditions that stimulate rapid and complete dechlorination of organic solvents and other recalcitrant compounds. First, the organic component of EHC (fibrous organic material) is nutrient rich, hydrophilic and has high surface area; thus, it is an ideal support for growth of bacteria in the groundwater environment. As they grow on EHC particle surfaces, indigenous heterotrophic bacteria consume dissolved oxygen thereby reducing the redox potential in groundwater. In addition, as the bacteria grow on the organic particles, they ferment carbon and release a variety of volatile fatty acids (acetic, propionic, butyric) which diffuse from the site of fermentation into the groundwater plume and serve as electron donors for other bacteria, including dehalogenators and halorespiring species. Finally, the small ZVI particles (ca. <5 to 45 µm) provide substantial reactive surface area that stimulates direct chemical dechlorination and an additional drop in the redox potential of the groundwater via chemical oxygen scavenging. These physical, chemical and biological processes combine to create an extremely reduced environment that stimulates chemical and microbiological dechlorination of otherwise persistent compounds. Redox potentials as low as -550 mV are commonly observed in groundwater after EHC application. At these Eh levels, many organic constituents of interest (COI) are thermodynamically unstable and they will readily degrade via pathways more typical of physical destruction processes (minimum production and no accumulation of typically recognized biodegradation intermediates such as DCE for TCE). Hence, the ISCR technology is microbiologically based in that we rely on indigenous microbes to biodegrade AAI11-160 EHC NC Site Li; () ADVENTUS EHC Design & Cost Estimate the EHC carbon (refined plant materials), but we do not require the presence or activity of special or otherwise unique bacteria for complete and effective remediation. The type of EHC used for a given site depends, in part, on the construction method employed to emplace the material into the subsurface. If a direct mixing or direct placement method is used, the standard slow release, solid EHC material would likely be utilized. If an injection method is used, however, a combination of fast and slow release EHC may be preferred. If the material is to be placed through an existing well network, then a water- soluble, aqueous formulation (EHC-L) may be utilized. In either event, the fibrous organic carbon and ZVI or other reduced metal that comprises the slow release EHC will remain in the location where it is injected. It will not only treat COI that migrates into the treated area, but it will also have a `halo' or `zone of influence' of low redox conditions that will extend beyond its physical space, greatly increasing its effectiveness. Figure 2 shows how EHC injection creates a wide zone of influence outside of its immediate location. The native soil color is the yellow visible on the right hand side of the core. The orange discoloration is due to the low redox conditions created by the EHC, which became apparent after exposure to the air for 2 hours. Figure 2: Photograph of a soil core, from 30 ft to 33 ft bgs, showing a 1-inch seam. MODE OF ACTION — ISCR FOR CVOCs It is critical to understand that the processes of COI destruction under ISCR conditions are different from the typical pathways. The primary COls in the Site groundwater are PCE/TCE and the recognized daughter products of reductive dehalogenation reactions that occur under normal anaerobic conditions (Figure 3). AAI11-160 EHC NC Site 3 (6) ADYEJTUS EHC Design & Cost Estimate Figure 3: PCE /TCE Degradation Schematic — Sequential Reductive Dehalogenation under Typical Anaerobic Conditions. PCE TCE —► trans-1,2-DCE VC 1,1-DCE Under ISCR conditions (Eh <-550 mV), these pathways are avoided and terminal destruction / mineralization proceeds along the lines of the recognized beta -elimination pathways (Figure 4). These differences have been described by various experts in the field of biotransformation processes (e.g., Dr. John Wilson, US EPA as reported in the AFCEE Technology Transfer Seminar, 2003; Dr. Mark Ferry, MPCAA; J, Szecsody and J. Fruchter et al., Battelle Pacific Northwest National Laboratory). Figure 4: PCE /TCE Degradation Schematic — Representative Reactions for Mineralization under ISCR Conditions. 13—Elimination Pathway •• Chloroacetylene Fee+ Acetylene Ethene • •• • . Cl .•� Ethane 4 H+ OH" ► cDCE .► tDCE ► 11DCE ► VC <10 Hydrogenolysis Pathway ........ .4. TCE AAI11-160 EHC NC Site 4 ( 1 ADVENTUS EHC Design & Cost Estimate CASE STUDIES EHC treatment has effectively removed a range of CVOCs under full-scale field conditions without generation of potentially problematic catabolites (Appendix A): • EHC for source area treatment in clayey lithology (PCE and catabolites), Former dry cleaner, Oregon • EHC-M for isolated hotspot treatment (TCE and Cr(VI)), NW USA • EHC for source area mass reduction (TCE, TCA and catabolites), Cherry Point, North Carolina • EHC for complete plume treatment using multiple reactive barriers (CF, TCE and OCPs), Confidential site, Southeast USA • EHC injection PRB for plume management (CT, CF), confidential site, Kansas • EHC injection PRB for plume management (cis-DCE and VC), confidential site, Ohio • EHC trench PRB and excavation backfill (PCE and daughters), confidential site, Texas • EHC applied via hydraulic fracturing into partially weathered rock, confidential site, Manufacturing facility, North Carolina EHC has been accepted by the State of North Carolina and many other regulatory agencies. The product is made in the USA and supplied in 50 lb bags as a powder which can be mixed with soil or slurried in water. Installation techniques vary widely depending on the application. For example, the powder can be mixed with soil and placed at the bottom of an excavation where prior soil removal had been conducted. A slurry can be made and the mixture can be injected into the subsurface using techniques such as direct injection through GeoProbe rods or hydraulic fracturing. POTENTIAL ADVANTAGES OF USING EHC ISCR TECHNOLOGY The patented combination of controlled -release organic carbon plus ZVI uniquely yields ISCR conditions which give EHC powerful technical advantages over other materials that provide only carbon (Le., emulsified oils, molasses or lactate -based substrates) or only ZVI. These include: • Health and Safety. Safe handling and easy application with no bulky or hazardous material disposal issues; • Minimal Methane Production. The presence of ZVI and the complex, controlled - release carbon source help minimize production of potentially problematic fermentation end -products, such as methane; • Predictable Performance. EHC uniquely integrated chemical and microbiological degradation processes which allows treatment to proceed at a predictable rate; AAI11-160 EHC NC Site 5 64,S) ADVENTUS EHC Design & Cost Estimate • Constructability. EHC is easily and quickly injected using conventional construction technologies; • No Mobilization of Contaminants. Optimal volume of EHC slurry is injected without the need for extensive water flushing, which avoids potential displacement and mobilization issues; • Accelerated Site Closure due to the ability of the EHC system to rapidly remove COI mass via a combination of biogeochemical degradation processes without relying on physical sorption / sequestration as a major "removal" mechanism, ala oils; • ISCR. Combined chemical and biological oxygen scavenging facilitates rapid oxygen consumption and establishment of reduced Eh; Generation of significantly lowered reducing conditions usually eliminates any requirement for specialty microorganisms or inoculants; • No Dead -End Intermediates. Rapid COI removal without accumulation of potentially problematic catabolites, such as cis DCE from TCE or chloroform (CF) from carbon tetrachloride (CT) (see Dolfing et al, 2008; Liu et al., 2000) • Applicability. Demonstrated effective on a wide range of COI, including chlorinated solvents, Freons, pesticides, perchlorate and other energetic compounds (explosives); • Longevity with no Rebound. EHC remains active in the environmental for 12 to 60 months hence COI rebound phenomena are not observed (rebound is common when using readily biodegradable, liquid substrates); • Complete Technology. Provision of major, minor and micronutrients that are essential to the activity of fastidious anaerobic bacteria involved in recognized dechlorination reactions; • Buffering Capacity. Provision of substantial pH buffering capacity (i.e., different EHC products are designed to release alkalinity, acidity or to maintain a neutral pH). In contrast, the addition of conventional organic substrates (e.q., emulsified oils, molasses or lactate -based materials) to promote COI biodegradation can lead to aquifer acidification; • Facilitates Natural Attenuation Processes. For all the reasons summarized above, EHC enhances the natural biological processes. Other technologies may offer short term COI reduction via sorption reactions, etc. but they can alter the environmental conditions such that natural attenuation mechanisms are adversely influenced; and • Simultaneous Immobilization of Heavy Metals. EHC will not mobilize arsenic, and EHC-M will simultaneously immobilize many other heavy metals, which may be present as other potential COIs. AAI11-160 EHC NC Site 6 (jj ADVENTUS EHC Design & Cost Estimate UNDERSTANDING SITE CONDITIONS AND GOALS The aquifer lithology is composed of sands and silts with depth to groundwater roughly around 5 ft bgs in the area of concern. The groundwater is impacted by chlorinated ethenes including PCE and its daughter products - collectively known as the constituents of interest (COI). COI concentrations as high as 40,000 ug/L have been observed proximal to well MW- 2. The source of contamination is known and is attributed to historic on -site operation. Table 1 summarizes the site conditions. Table 1: Site Overview Project Former American Cleaners, Chapel Hill, NC Source Area The dimension of the source area is 6,250 ft2. Depth to water table is 5 ft bgs and the thickness of the saturated zone is 2 ft (from 5-7 ft bg s). Dimensions Constituents of Concern Monitoring well MW-2 PCE : 40,000 ug/L TCE: 3,000 ug/L Vinyl Chloride (VC): 1,700 ug/L Cis1,2 DCE:1,300 ug/L Monitoring well MW-5 PCE : 4,000 ug/L TCE: 2,000 ug/L Vinyl Chloride (VC): 27.4 ug/L Cis1,2 DCE:1,400 ug/L Geology/ Hydrogeology Overburden is described as silty fine sand Depth to water table is 5 feet bgs. Assumed Ave. hydraulic Conductivity:0.55 ft/day Assigned porosity: 22 % Geochemical data The shallow aquifer is acidic (pH from 5.5to 7) and anoxic, with a DO < 1 mg/L and an ORP < -100 mV. CONCEPTUAL DESIGN - Pilot The project goal is to perform a pilot test in the area around MW-2 and 2W-5 to address cVOCs in groundwater and to restore the groundwater via ISCR, uniquely induced via the use of the EHC. Figure 5 shows the proposed treatment area and location of injection points. AAI11-160 EHC NC Site 7 (j)ADVENTUS EHC Design & Cost Estimate Figure 5: Proposed pilot test injection locations (not to scale) 0 ® 1 CE: O.01 `2 PCk::ti.15 XL: .1 77. is-S,z-I CE 1_42 trdt1S-1,2-DCE: o.1i6 VC: 0.0274 1.1-0CE: o.0c59J MW-2 PCE: 4c.4 TCC. '3.1 Lis-1;7-1DCE. `ran5-1,2-OC£s Q.Q878 EHC is typically provided in 50-Ib bags as a dry powder and mixed with water on site into aqueous slurry containing ca. 20-30% solids. Table 2 (next page) provides the EHC requirements and injection details. An application rate of 0.45% by wt EHC to soil mass has been proposed given that the concentrations of COI are high. EHC will be applied through 12 injection points, each spaced 9 ft apart to provide adequate distribution in the targeted area. EHC will add a sufficient carbon source for the microbes; TOC concentrations greater than 20 mg/L are considered favorable for bioremediation because they provide a carbon and energy source for microbes that participate in the dechlorination reactions (EPA, 1998). EHC will add >20 ppm TOC to the aquifer formation. In addition, ZVI reactions are extremely robust (effective under high or low DO/ORP conditions). Moreover, EHC will uniquely establish /SCR conditions by promoting both chemical oxygen scavenging and biological oxygen consumption. In addition, abiotic dechlorination reactions will be promoted in contact with ZVi, and the ZVI will help buffer the aquifer. AAI11-160 EHC NC Site 8 (ADVENTUS EHC Design & Cost Estimate Table 2: EHC pilot test injections Value Unit Treatment Area Dimensions: Length of treatment zone 40 ft Width of treatment zone 25 ft Depth to top of treatment zone 5 ft Depth to bottom of treatment zone 7 ft Treatment zone thickness 2 ft Treatment zone volume 2,000 ft3 Mass of soil in treatment zone 129 U.S. tons Estimated total porosity 22% Volume pore space 441 ft3 EHC mass calculations: Percentage EHC by soil mass 0.45% Mass of EHC required 1,200 Ibs Preparation of EHC Slurry: Percent solids in slurry (can be altered) 29% Volume water required 360 U.S. gallons Slurry volume to inject 438 U.S. gallons Injection details: Injection spacing 9 ft Number of injection points 12 points Mass EHC per point 100 Ibs Water volume per point 30 U.S. gallons Slurry volume per point 36 U.S. gallons Ibs/ vertical ft Mass EHC vertical distribution 50 Application rates for reference: Slurry volume to pore space volume 13.3% EHC concentration in groundwater 2.7 Ibs/ft3 Optional Hole Blok for filling boreholes: Mass Hole Blok required, assuming 2" diameter bores 150 lbs PLEASE NOTE that the construction estimates presented can be readily modified in the field as required (for example, the density of the slurry can be changed to modify the total injection volume or the injection layout/number of injection points could be altered depending on recommendations from the injection contractor and technology employed). Adventus recommends sampling for a set of critical and non -critical parameters (see attached) as part of baseline and continuous monitoring. We recommend that baseline samples be collected from monitoring wells within the treatment area (MW-2) and 2W-5 to establish current concentrations and existing geochemical conditions. Continuous monitoring samples can be collected monthly to assess ISCR efficiency. It is our understanding that the goal of the pilot is demonstrate significant reductions in cVOCs concentrations and not reach AAI11-160 EHC NC Site 9 (() ADVENTUS EHC Design & Cost Estimate regulatory standards. Once the pilot test results are validated (3 to 6 months time), the results will be utilized to develop the site -specific full scale remedial design. TABLE 2 NOTES: If the estimated amount of slurry per point is problematic, the dimensions, mass requirements, mixing and other injection details presented above can be readily modified in the field based on site specific conditions (for example, the density of the slurry can be changed to modify the total injection volume or the injection layout/number of injection points could be altered depending on recommendations from the contractor). OPTIONAL USE OF REACTIVE BOREHOLE SEALANT It is very important to effectively seal the DPT bore holes, and HoleBlok+ provides an excellent, reactive sealant to enhance overall remedial performance which should be prescribed for the injection contractor. A total of 150 Ibs of HoleBlok+ would be required for the pilot test. OPTIONAL USE OF INOCULANTS FOR RAPID DCE DEGRADATION The accumulation of DCE and other catabolites may indicate that the naturally occurring microbial population may be catabolically limited and that the remedial process might benefit from the addition of inoculants with known abilities to rapidly biodegrade DCE and related compounds. Although not typically required for ISCR as defined above, inoculants have been useful for these situations. Therefore once favorable redox conditions (ORP < -75 mV, DO <0.2 mg/L, pH between 6 and 8.5) have been attained following EHC addition, dehalococcoides (DHC) cultures could be added if DCE or VC are still present at high concentrations. The DHC inoculant will contain at least 1x10E10 cfu/ml of live bacteria including high numbers of dehalococcoides species with known abilities to biodegrade DCE. The target density of DHC cells in the treated aquifer areas will be 1x10E7 cfu/ml. A total of 3 L of inoculum is required for the pilot test. DISTRIBUTION OF RESPONSIBILITIES For field scale work at the Site, Adventus will provide environmental biotechnology and design support. It is our intention and understanding that Withers and Ravenel (Client) will be responsible for remedial construction, permitting, performance monitoring and reporting. The distribution of responsibilities envisioned is as follows: 1. Adventus will provide and arrange delivery of EHC to the Site. 2. Client will be responsible for remedial construction contracting. AA111-160 EHC NC Site 10 (6)ADVENTUS EHC Design & Cost Estimate 3. It is highly recommended that Adventus personnel be on site during project start-up to support Client's field staff. 4. Adventus will provide data interpretation to Client upon request. 5. Adventus will provide technical writing support to Client, upon request. 6. Client will provide manpower for receiving shipments, monitoring treatment performance and collecting samples. 7. Client will maintain overall project responsibility, and will maintain all client contact and control of the Site. 8. Client will be responsible for all health and safety, permitting and approvals, sampling and analytical costs along with all data management and reporting costs. COST ESTIMATE AAI's material and delivery costs for the proposed applications are presented below (Table 3). These costs include EHC and estimated delivery to the Site. Adventus oversight, labor and travel are presented as highly recommended options. These costs do not include the remedial construction or services assigned to Client. This pricing is valid for 30 days. Table 3: EHC mass requirements and cost (USD). Item Pilot EHC Mass (lb) 1,200 EHC Unit Price' $ 2.50/Ib EHC Cost $3,000 Small Order Handling Fee 2 $150 Shipping Estimate 3 $800 OPTIONAL Adventus technical support, field oversight and travel (2 days on site) 4 ($ 2,000) OPTIONAL lnoculum (3 L) OPTIONAL Inoculum cost ($ 115 /L + delivery) ($345) OPTIONAL HolePlug+ (lbs) (150) OPTIONAL HolePlug+ cost e ($37/50 lbs excluding delivery) ($111) TOTAL COST 5 $ 3,950 AAI11-160 EHC NC Site 11 (6) ADVENTUS EHC Design & Cost Estimate 1) Price valid for 30 days. Volume discount applied where appropriate and assumes payment within 45 days. Any applicable taxes not included. Please provide a copy of your tax exempt certificate or resale tax number when placing your order. 2) Warehousing and additional handling fee billed at 5% of material orders <5,000 lbs. 3) Shipping billed at actual cost plus 8%. Transportation quotes assume 5 to 7 day delivery time via truck, no lift gate, no pallet jack. 4) Field oversight is presented as a recommended option and not included in the total cost. 5) General terms and conditions for product sales are included in Appendix A 6) Reactive Hole Blok (ZVI amended) is presented as a recommended option for filling injection boreholes, and is not included in the total cost. Borehole diameter of 2 inches assumed. On behaif of Adventus, I thank you for your interest in our products and technologies. Please contact me by email at Ravi.Srirangam@adventusgroup.com or call me at 908.688.8543 if you have any questions regarding this proposal. Yours truly, Adventus Americas, Inc. 2JR L.-, Ravikumar Srirangam Environmental Engineer cc: Jim Mueller, Chris Mullen- Adventus Fayaz Lakhwala- Adventus EHC® is a registered trademark of Adventus Intellectual Property Inc and its affiliates. AAI11-160 EHC NC Site 12 I ADVENTUS EHC Design & Cost Estimate ADVENTUS AMERICAS INC. (AAI) GENERAL CONDITIONS — PRODUCT SALES ONLY 1. PAYMENT FOR PRODUCTS AND SERVICES A. Invoices will be issued every four weeks, payable in US dollars upon receipt, unless otherwise agreed. AAI shall retain title in and to all products until_all amounts owing by Client in respect of such products are paid in full; notwithstanding the above, Client hereby grants AAI a security interest, including a purchase money security interest in and to all products until such products have been paid in full. B. Interest of 1'h% per month (but not exceeding the maximum rate allowable by law) will be payable on any amounts not paid within 30 days, payment thereafter to be applied first to accrued interest and then to the principal unpaid amount. All costs, including reasonable attorney's fees, incurred in collecting any delinquent amount shall be paid by the Client. C In the event that the Client requests termination of the work prior to completion of a report, AAI reserves the right to complete such analyses and records as are necessary to place its files in order and, where considered by AAI necessary to protect its professional reputation, to complete a report on the work performed to date. A reasonable termination charge to cover the cost thereof may, at the discretion of AAI, be made. D. If Client refuses to take possession or is negligent in providing information or instructions necessary for shipment, the products will be stored at Client's expense and risk. In such case, Client will be liable for all costs in addition to storage costs. E. Eligible product* returns are subject to a re -stocking fee of 25%. Returned product must be returned in brand-new, resalable condition, at the sole discretion of AAI. Shipping costs for the return products are entirely the responsibility of the Client. In order to re -stock product, a written return authorization from AAI is required in advance. * AAI's EHC-L product is not eligible for return, as EHC-L product is made to order and has a relatively short shelf life. * AAI's ISGS product is not eligible for return, as ISGS product is manufactured on site. Accordingly, product returns for ISGS may be addressed on a case by case basis, at the sole discretion of AAI. ISGS return costs will also include re -stock fees back to the chemical distributors, in accordance with their individual policies. 2. WARRANTY AND LIABILITY A. THE WARRANTY CONTAINED HEREIN IS EXCLUSIVE AND IN LIEU OF ALL OTHER REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED; AAI EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE AND WARRANTIES ARISING FROM USAGE OF TRADE OR COURSE OF DEALING. B. AAI has neither created nor contributed to the existence of any hazardous, radioactive, toxic or otherwise dangerous substance or condition at the site, and its compensation hereunder is in no way commensurate with the potential risk of injury or loss that may be caused by exposure to such substances or conditions. Accordingly, notwithstanding any other provision herein, the liability of AAI, its employees, subcontractors and agents for any injury or loss arising from any such pre-existing or client generated dangerous substance orcondition at AAI11-160 EHC NC Site 13 ADVENTUS EHC Design & Cost Estimate or near the project site, shall not exceed $1,000. C. Notwithstanding any other provision herein, the liability of AAI, its employees, subcontractors and agents shall be limited to injury or loss caused by AAI, its subcontractors and/or agents hereunder, and the liability of AAI for injury or loss arising from (i) professional errors or omissions and/or (ii) environmental impairment or pollution and/or (iii) radiation, nuclear reaction, or radioactive substances or conditions shall not exceed $5,000 or our cost of product, whichever is greater. D. The Client shall indemnify, defend and hold harmless, AAI, its officers, directors, employees and agents against all demands, claims, fines, suits, expenses (including reasonable attorney's fees), damages, actions brought or threatened by any third party, or any other liability of any kind or nature (including any liability for damage to the environment) at law or in equity that is assessed or asserted against or sustained by AAI, to the extent such injury, loss or damage is caused by the negligence or willful act or omission of client or a client affiliate (including the officers, directors employees and agents thereof) in its (i) use of any AAI product (ii) use of an AAI process; or (iii) use of any AAI know-how. Client's duty to indemnify, defend and hold AAI harmless set forth herein shall extend to injury, loss or damage incurred by AAI in connection with (i), (ii), or (ii) above, and which does not arise out of the negligence or willful act or omission of AAI; but in such instances the client's duty of indemnification shall extend only to the amount of the injury, loss or damage that is in excess of the total amount of fees received by AAI under this agreement as of the date that AAI becomes aware of the injury, loss or damage. E. In the event Client makes a claim against AAI, at law or otherwise, for any alleged error, omission or other act arising out of the use of AAI's products or performance of its professional services, and to the extent the Client fails to prove such claim or any part thereof, then the Client shall pay all costs, including attorneys' fees, incurred by AAI in defending itself against the claim. F Client will self -assess any and all sales or use taxes that may apply to product purchases. In addition, Client will indemnify and hold harmless AAI relative to any and all such taxes. G. Client will accept a 1% surcharge (minimum $500) to the total cost of all projects to cover the cost of any and all client -requested subrogation waivers. 3. CONSEQUENTIAL DAMAGE AND OTHER LIABILITY. A. AAI SHALL NOT BE SUBJECT TO ANY OTHER OBLIGATIONS OR LIABILITIES, WHETHER ARISING OUT OF BREACH OF CONTRACT, WARRANTY, TORT (INCLUDING NEGLIGENCE AND STRICT LIABILITY), OR OTHER THEORIES OF LAW, WITH RESPECT TO PRODUCTS SOLD OR SERVICES RENDERED BY AAI, OR ANY UNDERTAKINGS, ACTS, OR OMISSIONS RELATING THERETO. Without limiting the generality of the foregoing, AAI specifically disclaims any liability for penalties; special or punitive damages; damages for lost profits or revenues; loss of use of products or any other equipment, cost of capital; cost of substitute products, facilities, or services; down -time, shut -down, or slow -down costs; any other types of economic loss; or claims of Client's customers or any other third party for any such damages. B. Client acknowledges receipt of the relevant Materials Safety Data Sheet (MSDS) and agrees that all AAI products will be handled in accordingly. Client will comply with all applicable existing and future federal, state, provincial, and local laws, regulations, administrative requirements, rules and orders. AAI11-160 EHC NC Site 14 (ADVENTUS EHC Design & Cost Estimate C. AAI WILL NOT BE LIABLE FOR AND DISCLAIMS ALL CONSEQUENTIAL, INCIDENTAL, AND CONTINGENT DAMAGES WHATSOEVER. 4. CHOICE OF LAW; JURISDICTION AND VENUE. This contract shall be governed by and construed according to the internal laws of the State of Illinois and, additionally, with respect to products delivered outside the United States, the United States of America (without reference to principles of conflicts of laws). Client hereby consents to, and submits to, jurisdiction and venue in any court of competent jurisdiction in the state or federal courts located in Chicago, Illinois for purposes of enforcement of this contract. 5. FORCE MAJEUR. AAI shall not be liable for any damage as a result of any delay or failure to deliver due to any cause beyond AAI's reasonable control, including, without limitation: any act of God; any act or omission of Client; embargo, government testing, customs delays, expert or import controls or restrictions, or other governmental act, regulation, or request; fire, floor, or accident; strike, slowdown, or other labor trouble; war declared or undeclared; terrorist acts; riot; sabotage; shipping delays; shipwreck or other extraordinary transportation breakdown; or delay in obtaining or inability to obtain necessary or suitable labor, services, materials, components, equipment, manufacturing facilities, or transportation. 6. CONFIDENTIALITY All technical and commercial information, data regarding processes, know-how, and information regarding marketing of the products disclosed by AAI to Client shall remain the property of AAI, and such information will not be disclosed to any third party without the written consent of AAI, unless such disclosure is required by law. Client shall not make use of such AAI trade secret or confidential information for its benefit, either during or subsequent to the termination or expiration of this agreement. The provisions of this Section shall survive termination of this agreement. 7. RELATIONSHIP A. Notwithstanding any references made in orders, purchase orders, invoices or the like to any other standard terms and conditions, every sale and delivery of the products by AAI to Client shall be subject solely to this agreement. B. The relationship between AAI and Client is that of vendor and purchaser and not that of principal and agent. Client shall not have authority to assume or create any obligation or responsibility on behalf of or in the name of AAI, or to bind AAI in any manner whatsoever. AAI11-160 EHC NC Site 15 11 �l 1 ATTACHMENT E INJECTION PROCEDURE AND EQUIPMENT Quantex, Inc. F.O. Box 41673 Raleigh, North Carolina 27629 Phone: (919) 20-9664 Fax: (919) 553-21o0 March 21, 2011 Christopher Fay Withers & Ravenel, Inc. 111 Mackenan Drive Cary, North Carolina 27511 RE Standard Operating Procedure (SOP) Adventus EHC"m Installation Procedures — Direct Injection Dear Mr. Fay: Thank you for the opportunity to provide you this SOP for the purpose of injecting Adventus EHC.rm (EHC) for your upcoming project. Quantex proposes to use Direct Push rigs and specialized injection equipment to assist in the in -situ remediation pilot test, EHC, in the form of a dry powder will be mixed with water within batch tanks open to the atmosphere, but contained within a truck/trailer. A pre -determined ratio of water and EHC will be mixed together to form a liquid slurry. This will be accomplished by using heavy- duty mixers to bring the EHC solution to the desired wet density as specified in the remedial action plan. AD mixing will be performed on site within a protected area away from pedestrians and non -contracted personnel. Quantex proposes that EHC will be staged in a dry container away from oxidizers and protected from exposure to the elements. In order to minimize mixing cycles, container sizes will be selected which will best replicate injection volumes. Total volume for each injection point will be closely monitored and documented. Upon completion of mixture, the EHC solution will be pumped to an injection holding tank. Because of the rather thick slurry, flow meters will not be used for this project. Instead, a pre -determined volume of the EHC solution will be mixed prior to injection. Because of the potential of varying hydraulic conductivity across the site, Quantex will select a pump(s) that will be compatible with the EHC solution and which will maximize flow into the formation without short-circuiting above the point of injection or unintended hydro - fracturing of the formation. More specifically, the pump pressure will be matched to the anticipated aquifer backpressure. Pump(s) proposed for this project will be capable of flow rates ranging from 0.50 gpm up to 6 gpm and pressures ranging from 40 psi up to 200 psi. Pumping pressures will be monitored at the top of the injection rod string (above grade), while flow rates will be calculated from the time it takes to complete each injection versus total fluids injected for each point. Quantex anticipates that either a progressive cavity pump or diaphragm pump will be best suited for this project. Ti Quantex proposes to use a Geoprobe 7720DT direct push rig. This rig will be utilized to advance all injection tooling and rod string for the specified project. At the customers' choice, Quantex will use either a drop-off point injection system or a specially designed hollow injection rod system that incorporates perforated openings along a 12" section of the tool string. These openings help direct the solution laterally in a radial pattern into the formation at a pre -determined depth. Typical tool string sizes will vary from a 1.5" O.D. up to a 2.25" O.D. Unless otherwise directed, the injection will be performed using a "Bottom - up" method. All tanks, hoses and fittings will be compatible with the EHC solution. A site -specific Health and Safety Plan (HASP) will be developed in collaboration with the client. Quantex will select personal protective equipment specific to the MSDS sheets and information provided by Adventus. Field safety meetings will be held daily or as frequent as needed to protect human health and promote safety during all phases of work. Quantex will only utilize personnel that have completed 40 hour OSHA training, plus completed a certified annual 8 hour refresher class, as applicable. Upon completion of the injection, the tool string will be extracted and the borehole abandoned according to State rules and regulations. The borehole opening will be repaired to closely match existing surface conditions using like materials. Containment will be incorporated into the injection process so as not to spill the EHC solution. Good housekeeping practices will be implemented at all times. If you have any questions concerning the contents of this SOP, please feel free to call on me at your earl' st convenience. Sincerely, J.D. Barker Quantex, Inc 1 ATTACHMENT F MONITOIRNG PLAN Attachment F Prior to the pilot test, Withers and Ravenel will conduct a groundwater sampling event which will include existing wells 2W-2, 2W-2D, 2W-4 through 2W-6, 2W-8, MW-1 through MW-5 to establish pre injection aquifer conditions. Subsequent pilot test activities, groundwater sampling will be conducted to monitor the effectiveness of the injectate in reducing contaminant concentrations. Groundwater monitoring wells 2W-5, 2W-6, MW-1, MW-2, MW-3, MW-5 will be sampled one week, one month, two months, three months, six months, nine month and twelve months after the pilot study. Groundwater samples will be analyzed for the following: • VOCs by 8260 • Chlorides by EPA method 325.2 • Carbon Dioxide by SM 45000O2D • Methane, Ethane, and Ethene by RSK 175 All groundwater samples will be decanted into laboratory provided bottles and shipped under the proper chain of custody. All wells will be sampled using low flow/minimal draw down techniques. During the purging process MNA parameters will be recorded which include pH, electrical conductivity, dissolved oxygen, oxygen reduction potential. u Il 11 I I 11. 11. I I ATTACHMENT G WELL DATA i'1 Table 3: Monitoring Well Construction Data ADT 3 DSCA ID No.: 68-0002 Date Installed Well Depth Well Diameter Screen Interval Status Well ID (mm/dd/yy)Number of Samples [feet]inch feet (Active/Inactive) Inactive Active Active Inactive Active Active Active > .�? Inactive > > > > > Active 00 ,--1 M CO l- 00 N 3.4-13.4 ci fV O 01 O 7 00 00 00 M N " N Vl 00 Vl M Vl 00 Vl M O. O O 2.0-7.0 4.5-14.5 oo N 00 18-28 M M N N 00 i-S N N N N N N N N N Z Z N N N N N N V1 00 O 06 14.0 21.5 V1 D1 N Cr 13.0 O O 01 O vl O r 14.5 28 28 33 00 N CI N N N N "zit d- N N -- -- --, M M +-- -- --, Cl•T N to Vl 00 V1 01 00 00 V1 c= 00 00 Vl Cn l� 00 O' 00 V7 61 00 00 in 01 00 00 Cn O' 00 WI CN 00 in d1 00 00 O N 01 9/23/08 9/24/08 9/24/08 9/24/08 00 O N 01 N V4 N Q N 2W3 2W4 2W5 2W6 2W7 2W8 .-. 'T' HA-2 MW-3 cf Vl I