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Home My WebLink AboutWI0501074_Application_20210414North Carolina Department of Environmental Quality — Division of Water Resources APPLICATION FOR PERMIT TO CONSTRUCT AND/OR USE A WELL(S) FOR INJECTION Groundwater Remediation (15A NCAC 02C .0225) Do not use this form for UIC wells Permitted by Rule (ref. 15A NCAC 02C .0217) Permit Number (to be completed by DWR for new projects): WI 0501074 I. APPLICATION INFORMATION 1. Project is: [X] New [ ] Modification [ ] Renewal without modification [ ] Renewal with modification 2. If this application is being submitted for Renewal and/or Modification to an existing permit, provide: Existing permit number WI Issued Date: & Expiration Date: For all Renewals, attach an updated site map and status report including monitoring results of all injection activities to date. For Renewal without modification only, 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 (f the applicant is not the owner). II. WELL OWNER(S)/PERMIT APPLICANT (generally the responsible party) 1. Name(s): Russ Eiler, Schlage Lock Company LLC 2. Signing Official's Name*: Title: * Signing Official must be in accordance with instructions in Part XII. 3. Mailing address of Permittee/Applicant: 11819 N. Pennsylvania St. City: Carmel State: IN Zip: 46032 4. Telephone number: 1-317-810-3874 Email: russ.eiler(aallegion.com 5. Status (choose one): Individual X Business/Org. Federal State County Municipality III. PROPERTY OWNER(S) (if different than well owners) 1. Name(s): Agrede, LLC (Greg Hodges) 2. Mailing address: 400 English Rd City: Rocky Mount State: NC Zip: 27804 3. Telephone number: 252-985-1070 Email: N/A IV. PROJECT CONTACT — (generally the environmental/engineering consultant). 1. Name: Mike Burcham Title: Project Engineer 2. Company: Geosyntec Consultants of NC, P.C. 3. Address: 2501 Blue Ridge Rd, Ste 430 4. City: Raleigh State: NC Zip: 27607 5. Telephone number: +1 919-424-1850 Email: mburcham(ageosyntec.com Groundwater Remediation Application Rev. 2-17-2020 Page 1 of 9 V. FACILITY INFORMATION 1. Facility name: Former Schlage Lock Plant Phone No. (if available): 2. Physical address: 213 Red Iron Road City: Rocky Mount County: Nash Zip: 27804 3. Geographic Coordinates: Latitude: 36° 01' 25" Longitude: 77°46' 00" Reference Datum: World Geodetic System, 1984 (WGS84) Accuracy: N/A Method of Collection (i.e., Google Earth, GPS, etc.): Google Maps 4. Brief description of business: VI. INCIDENT DESCRIPTION 1. Source and date of contamination: PCE impacts first identified on site in 1986. RCRA Facility Assessment Report identified multiple solid waste management units and areas of concern. They were generally associated with historical industrial activities (degreaser), chlorinate solvent storage (PCE transfer vault), and drum storage. 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 volatile organic compounds 3. Has LNAPL or DNAPL ever been observed at the site (even if outside the injection zone)? [X] YesIf yes, list maximum measured separate phase thickness: not measured feet [ ] No If no, list maximum concentration of total VOCs observed at site: ppb 4. Agency managing the contamination incident: [ ] UST Section [ ] Superfund Section (including REC Program and DSCA sites) [ ] DWR Aquifer Protection Section [ ] Solid Waste Section [X] Hazardous Waste Section [ ] Other: 5. Incident manager's name: Rob McDaniel Phone No.: 919-707-8215 6. Incident number or other incident mgmt. agency tracking number: NCD 065 300 519 Groundwater Remediation Application Rev. 2-17-2020 Page 2 of 9 VII. PERMITS List all applicable permits or construction approvals issued for the facility or incident: 1. Previous or other UIC permits issued by DWR (e.g., NOIs) WI0500984 for potable drip water for thermal remediation electrodes 2. Other Non -Discharge or NPDES permit issued by DWR: NPDES NC0079227 3. County or DEH subsurface wastewater disposal permits: 4. Hazardous waste management or other environmental permits required by state or federal law: Groundwater Remediation Application Rev. 2-17-2020 Page 3 of 9 VIII. INJECTION SUMMARY 1. List all proposed injectants/additives. NOTE: Only injectants approved by the epidemiology section of the NC Division of Public Health, Department of Health and Human Services can be injected. Approved injectants can be found online at http: //deq.nc.gov/about/divisions/water-re sources/water-resources-permits/wastewater-branch/ground-water- protection/ground-water-approved-injectants. All other substances must be reviewed by the DHHS prior to use. Contact the UIC Program for more info if you wish to get approval for a different additive. However, please note it may take 3 months or longer. If no injectants are to be used use N/A. Injectant: ABC Total Amt. to be injected (gal)/event: 11,000 gal Injectant: ABC+ Total Amt. to be injected (gal)/event: 3,000 gal Injectant: KB-1/KB-1 Plus Total Amt. to be injected (gal)/event: 325 L Injectant: Buffering - Magnesium Hydroxide Total Amt. to be injected (gal)/event: 5,400 lb Injectant: Buffering — Sodium Bicarbonate Total Amt. to be injected (gal)/event: 130,000 lb Injectant: Sodium Sulfite Total Amt. to be injected (gal)/event: 130 kg Injectant: KB-1 Primer Total Amt. to be injected (gal)/event: 1,2001b Injectant: Dechlorinator Total Amt. to be injected (gal)/event: 1.5 gal Total Amt. to be injected (gal/event): 550,000 2a1 of diluted ABC/ABC+ and anaerobic chase water No. of separate injection events: 1 Total Amt. to be injected (gal): 550,000 Source of Water (if applicable): On -site fire hydrant(s) 2. Estimated Injection rate per well: 4-8 GPM 3. Estimated Injection pressure: 5-100 pounds/square inch (PSI) 4. Temperature at point of injection: ambient °F 5. Injection will be via: Existing well(s)- Total No.: N/A ; Well Type (DPT, Permanent, etc.): N/A Proposed well(s)- Total No.: 89 ; Well Type (DPT, Permanent, etc.): Temporary DPT 6. NC Certified Well Drilling Contractor's Name (if known): TBD NC Well Contractor Certification No.: TBD 7. Date to be constructed if proposed: June through August 2021 (attach well construction records [GW-ls] for existing injection wells) 8. Screened interval/Injection interval of injection wells: Depth from 12 to 50 feet below land surface (BLS) (if multiple intervals, indicate shallowest to deepest depth) 9. Well casing (leave blank if Geoprobes®): Type (PVC, stainless steel, other): Casing depth: to ft. BLS Type (PVC, stainless steel, other): Casing depth: to ft. BLS Groundwater Remediation Application Rev. 2-17-2020 Page 4 of 9 10. Grout (leave blank if Geoprobes): Type (cement, bentonite, other): Grout depth: to ft. BLS Type (cement, bentonite, other): Grout depth: to ft. BLS IX. ATTACHMENTS — provide the following information in separate attachments. The attachments should be clearly identified and presented in the order below to expedite review of the permit application package. 1. INJECTION ZONE — Per 15A NCAC 02C .0225(f)(3), specify the horizontal and vertical portion of the subsurface within which the proposed injection activity will take place and beyond which no violations of groundwater quality standards shall result from the injection as determined by an approved monitoring plan. The determination shall be based on the hydraulic properties of the specified zone. Provide any supporting documentation in a separate attachment. 2. HYDROGEOLOGIC EVALUATION — Per 15A NCAC 02C .0225(f)(4), provide a hydrogeologic evaluation of the injection zone that includes all of the following: (A) Regional and local geology and hydrology; (B) Changes in lithology underlying the facility; (C) Depth to bedrock; (D) Depth to the mean seasonal high water table; (E) Hydraulic conductivity, transmissivity, and storativity, of the injection zone based on tests of site -specific material, including a description of the test(s) used to determine these parameters; (F) Rate and direction of groundwater flow as determined by predictive calculations or computer modeling; (G) Lithostratigraphic and hydrostratigraphic logs of any existing test and injection wells; and (H) For systems re -injecting treated on -site contaminated groundwater only- evaluation of infiltration galleries or injection wells. 3. INJECTANT INFORMATION — Per 15A NCAC 02C .0225(f)(6), provide information on each injectant as indicated below: (A) MSDS, concentration at the point of injection, and percentage if present in a mixture with other injectants; (B) The source of fluids used to dilute, carry, or otherwise distribute the injectant throughout the injection zone. If any well within the area of review of the injection facility is to be used as the fluid source, then the following information shall be submitted: location/ID number, depth of source, formation, rock/sediment type, and a 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; (C) A description of the rationale for selecting the injectants and concentrations proposed for injection, including an explanation or calculations of how the proposed injectant volumes and concentrations were determined; (D) 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; (E) A summary of results if modeling or testing was performed to investigate the injectant's potential or susceptibility for biological, chemical, or physical change in the subsurface; and (F) An evaluation concerning the development of byproducts of the injection process, including increases in the concentrations of naturally occurring substances. Such an evaluation shall include the identification of the specific byproducts of the injection process, projected concentrations of byproducts, and areas of migration as determined through modeling or other predictive calculations. 4. INJECTION PROCEDURE — Per 15A NCAC 02C .0225(f)(7), submit a table with a detailed description of the proposed injection procedure that includes the following: Groundwater Remediation Application Rev. 2-17-2020 Page 5 of 9 (A) The proposed average and maximum daily rate and quantity of injectant; (B) The average maximum injection pressure expressed in units of pounds per square inch (psi); and (C) The total or estimated total volume to be injected. 5. FRACTURING PLAN (if applicable) — Per 15A NCAC 02C .0225(0(9) submit a detailed description of the fracturing plan that includes the following: (A) Material Safety Data Sheets of fracturing media including information on any proppants used; (B) a map of fracturing well locations relative to the known extent of groundwater contamination plus all buildings, wells, septic systems, underground storage tanks, and underground utilities located within the Area of Review; (C) a demonstration that buildings, wells, septic systems, underground storage tanks, and underground utilities will not be adversely affected by the fracturing process; (D) injection rate and volume; (E) orientation of bedding planes, joints, and fracture sets of the fracture zone; (F) performance monitoring plan for determining the fracture well radius of influence; and (G) if conducted, the results of geophysical testing or pilot test of fracture behavior conducted in an uncontaminated area of the site. 6. WELL CONSTRUCTION DETAILS — Per 15A NCAC 02C .0225(f)(10), submit the following information in tabular or schematic form as appropriate for each item: (A) number and depth of injection wells; (B) number and depth of borings if using multi -level or "nested" well systems; (C) indication whether the injection wells are existing or proposed; (D) depth and type of casing; (E) depth and type of screen material; (F) depth and type of grout; (G) indication whether the injection wells are permanent or temporary "direct push" points; and (H) plans and specifications of the surface and subsurface construction details. 7. MONITORING PLAN — Per 15A NCAC 02C .0225(f)(11), submit a monitoring plan that includes the following: (A) target contaminants plus secondary or intermediate contaminants that may result from the injection; (B) other parameters that may serve to indicate the progress of the intended reactions; (C) a list of existing and proposed monitoring wells to be used; and (D) a sampling schedule to monitor the proposed injection. Monitoring wells shall be of sufficient quantity and location to detect any movement of injection fluids, injection process byproducts, or formation fluids outside the injection zone. The monitoring schedule shall be consistent with the proposed injection schedule, pace of the anticipated reactions, and rate of transport of the injectants and contaminants. 8. WELL DATA TABULATION — Per 15A NCAC 02C .0225(f)(12), provide a tabulation of data on all existing or abandoned wells within the area of review of the injection well(s) that penetrate the proposed injection zone, including monitoring wells and wells proposed for use as injection wells. Such data shall include a description of each well's type, depth, and record of construction or abandonment. 9. MAPS AND CROSS -SECTIONS — Per 15A NCAC 02C .0225(f)(13), provide scaled, site -specific site plans or maps depicting the location, orientation, and relationship of facility components including the following: (A) 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; (B) topographic contour intervals showing all facility related structures, property boundaries, streams, springs, lakes, ponds, and other surface drainage features; (C) all existing or abandoned wells within the area of review of the wells listed in the well data tabulation that penetrate the proposed injection zone; (D) potentiometric surface map(s) that show the direction of groundwater movement, existing and proposed wells; (E) contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the contaminant plume in soil and groundwater, and existing and proposed wells; (F) cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical extent of the contaminant plume in soil and groundwater, major changes in lithology, and existing and proposed wells; and Groundwater Remediation Application Rev. 2-17-2020 Page 6 of 9 (G) any existing sources of potential or known groundwater contamination, including waste storage, treatment, or disposal systems within the area of review of the injection well or well system. X. UIC SYSTEMS RE -INJECTING TREATED ON -SITE CONTAMINATED GROUNDWATER ONLY 1. FEES — Per 15A NCAC 02C .0225(m), submit/attach fees for new permits or modifications (refer to fee schedule at https://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/ground-water- protection/non-discharge-groundwater-remediation 2. SOILS EVALUATION - Per 15A NCAC 02C .0225(0(2), for systems with proposed discharge within seven feet of land surface and above the seasonal high water table, a soil evaluation of the disposal site shall be provided to the Division by the applicant. If required by G.S. 89F, a soil scientist shall submit this evaluation. This evaluation shall be presented in a report that includes the following information: (A) Field description of soil profile. Based on examinations of excavation pits or auger borings, the following parameters shall be described by individual horizons to a depth of seven feet below land surface or to bedrock: thickness of the horizon; texture; color and other diagnostic features; structure; internal drainage; depth, thickness, and type of restrictive horizons; pH; cation exchange capacity; and presence or absence of evidence of any seasonal high water table. Applicants shall dig pits when necessary for evaluation of the soils at the site. (B) Recommendations concerning annual and instantaneous loading rates of liquids, solids, other wastewater constituents and amendments. Annual hydraulic loading rates shall be based on in -situ measurement of saturated hydraulic conductivity in the most restrictive horizon. 3. ENGINEERING PLANNING DOCUMENTS — Per 15A NCAC 02C .0225(0(8), the following documents shall be provided to the Division by the applicant (Note: if required by G.S. 89C, a professional engineer shall prepare these documents): (A) engineering plans for the entire system, including treatment, storage, application, and disposal facilities and equipment, except those previously permitted unless they are directly tied into the new units or are critical to the understanding of the complete process; (B) specifications describing materials to be used, methods of construction, and means for ensuring quality and integrity of the entire groundwater remediation system; (C) plans that include construction details of recovery, injection, and monitoring wells and infiltration galleries; (D) operating plans that include: (i) the operating schedule including any periodic shut -down times; (ii) required maintenance activities for all structural and mechanical elements; (iii) a list of all consumable and waste materials with their intended source and disposal locations; (iv) restrictions on access to the site and equipment; (v) provisions to ensure the quality of the treated effluent and hydraulic control of the system at all times when any portion of the system ceases to function, such as standby power capability, complete system -off status, or duplicity of system components; and (E) Completed, signed, and sealed Professional Engineer's Certification for new permit applications (form attached). Groundwater Remediation Application Rev. 2-17-2020 Page 7 of 9 XII. CERTIFICATION (to be signed as required below or by that person's authorized agent*) NCAC 15A 02C .0211(e) requires that all permit applications shall be signed as follows: 1. for a corporation: by a responsible corporate officer 2. for a partnership or sole proprietorship: by a general partner or the proprietor, respectively 3. for a municipality or a state, federal, or other public agency: by either a principal executive officer or ranking publicly elected official 4. for all others: by the well owner. *If an authorized agent is signing on behalf of the applicant, then supply a letter signed by the applicant that names and authorizes their agent. "I hereby cert under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments therein, 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 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." Typed or Printed Name and Title: Russell E. Eiler, Director, Global EHS Compliance, Schlage Lock Company LLC Signature: Date: 04/09/2021 XIII. CONSENT OF PROPERTY OWNER (if the property is not owned by the permit 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. "As owner of the property on which the injection well(s) are to be constructed and operated, I 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 (15A NCAC 02C . 0200). " Typed or Printed Name and Title: Date: 5,4/17A1/ &or)cc ) Submit TWO hard copies of the completed application package with an electronic version in CD or USB Flash Drive to: DIVISION OF WATER RESOURCES — UIC PROGRAM 1636 MAIL SERVICE CENTER RALEIGH, NORTH CAROLINA 27699-1636 TELEPHONE NUMBER: (919) 707-9000 Groundwater Remediation Application Rev. 2-17-2020 Page 8 of 9 Professional Engineer's Certification (for new permit application for UIC systems re -injecting treated on -site contaminated groundwater on : Permit No.: NOT APPLICABLE Typed or Printed Name of Professional Engineer: License Number: Name of Engineering Firm (if applicable): Mailing Address: City: State: Zip: Office Number: ( ) Mobile Number: ( ) Email Address: attest that this application for has been reviewed by me and is accurate and complete to the best of my knowledge. I further attest that to the best of my knowledge the proposed design has been prepared in accordance with the applicable regulations. Although certain portions of this submittal package may have been developed by other professionals, inclusion of these materials under my signature and seal signifies that I have reviewed this material and have judged it to be consistent with the proposed design. North Carolina Professional Engineer's Seal, Signature, and Date: Groundwater Remediation Application Rev. 2-17-2020 Page 9 of 9 1. INJECTION ZONE — Per 15A NCAC 02C .0225(f)(3), specify the horizontal and vertical portion of the subsurface within which the proposed injection activity will take place and beyond which no violations of groundwater quality standards shall result from the injection as determined by an approved monitoring plan. The determination shall be based on the hydraulic properties of the specified zone. Provide any supporting documentation in a separate attachment. The general injection areas are provided on Figure 5, attached (Geosyntec, 2021b) and the specific injection locations are provided on Figures 6 through 7, attached (Geosyntec, 2021b). These figures do not provide vertical extents of the injection locations. Tables 3 and 4, attached (Geosyntec, 2021b) provide proposed injection intervals for each injection location. E3 ♦;y >44 Legend Upper Aquifer Monitoring Well 9 Middle Aquifer Monitoring Well Middle/Lower Aquifer Monitoring Well - Lower Aquifer Monitoring Well - Yorktown Aquifer Monitoring Well • Middle Aquifer Piezometer • Lower Aquifer Piezometer • Recovery Well Downgradient Injection Area Ma High Concentration Injection Area Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. - Only monitoring well ID numbers are presented. - Middle Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, and DG1. - Lower Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, HC4, DG1, DG2, and DG3. - Injection areas are approximate. •0 250 0 250 Feet Injection Areas Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec' consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC March 2021 Figure 5 Legend Upper Aquifer Monitoring Well 6 Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well • High Concentration Injection Locations: ZVI and Amendment (14-ft ROI) 0 •�e High Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and Amendment Injection Locations for Middle and Lower Aquifers: Amendment Only PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron injection - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. HC3-10 HC3-11 fHC3=12' HC3-09-_ ii • • 1+78D ,HC3-02 HC41`r'� HC3-15 HC3-03 • H 4 HC3-08 \ 78S HC3-04 HC3-13 • ' HC3-07 t HC3-05,d HC3-06 50 0 50 Feet Middle Aquifer High Concentration Injection Areas: HC1, HC2, and HC3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29 Raleigh, NC March 2021 Figure 6A .4 • r Legend Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well Lower and Middle Aquifer Injection Locations: Amendment Only Lower and Middle Aquifer Injection Locations: Amendment Only 0 :if.e — PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (fag/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. 50 0 50 Feet Middle Aquifer Downgradient Injection Areas: DG1 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec c consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-2 Raleigh, NC April 2021 Figure 6B Legend Upper Aquifer Monitoring Well - Middle Aquifer Monitoring Well $ Lower Aquifer Monitoring Well O Middle Aquifer Piezometer •e Lower Aquifer Piezometer • Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) < PCE Sink Approximate ERH Footprint — Aspen Investments Property Boundary OHigh Concentration Injection Locations: ZVI and Amendment (14-ft ROI) OHigh Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and .. • Amendment i Injection Locations for Middle and Lower Aquifers: •..• Amendment Only Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells. HC3-09 HC3-10— HC3-0• 2 - o 20 HC3-03 78S HC3-01 G HC3-08 HC3-04 • r000` 3504HC3 OTw-- . • 50 0 50 Feet Lower Aquifer High Concentration Injection Areas: HC1, HC2, HC3, and HC4 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC March 2021 Figure 7A � v+ Legend 9 Upper Aquifer Monitoring Well $ Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Lower Aquifer Piezometer O Recovery Well —PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) ODowngradient Injection Location: Amendment Only (14-ft ROI) Injection Location for Middle and Lower Aquifers: .. • Amendment Only (14-ft ROI) — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells Pry. • 4 le 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG1 and DG2 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC April 2021 Figure 7B '• 44 . • • • r., • • Legend • Middle Aquifer Monitoring Well - Lower Aquifer Monitoring Well O Middle Aquifer Piezometer Lower Aquifer Piezometer Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (pg/L) / • Downgradient Injection Location: Amendment Only (14-ft ROI) Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec u consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 7C Table 3. Injection Location Coordinates and Injection Intervals Allegion Rocky Mount Rocky Mount, North Carolina Injection Area DPT Injection Location ID Easting Northing Target Aquifer(s) ZVI? Injection Interval (ft BLS) Monitoring Well(s) Used for Design Primary PCE Concentration(s) hug/I) Notes High Concentration Injection Locations High Concentration Area 1 (HC1) HC1-01 -77.7670838 36.0240326 Middle/Lower 18 to 32 / 40 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-02 -77.7671612 36.0240464 Middle / Lower 18 to 32 / 38 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-03 -77.7672327 36.0240650 Middle / Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-04 -77.7673140 36.0240830 Middle/Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-05 -77.7673094 36.0240141 Middle / Lower 14 to 36 / 40 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-06 77.7672205 36.0240021 Middle /Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections High Concentration Areal (HC2) HC2-01 -- -- Middle ✓ 16 to 32 MW-75S 103,000 HC2-02 -- -- Middle ✓ MW-75S 103,000 HC2-03 -- -- Middle ✓ MW-75S 103,000 HC2-04 -- -- Middle ✓ MW-75S 103,000 HC2-05 -- -- Middle ✓ MW-75S 103,000 HC2-06 -- -- Middle I. MW-75S 103,000 HC2-07 -- -- Middle ✓ MW-75S 103,000 HC2-08 -- -- Middle ✓ MW-75S 103,000 HC2-09 -- -- Middle ✓ MW-75S 103,000 HC2-10 -- -- Middle ✓ MW-75S 103,000 HC2-11 -- -- Middle ✓ MW-75S 103,000 HC2-12 -- -- Middle 19 to 31 MW-75S 103,000 HC2-13 -- -- Middle MW-75S 103,000 HC2-14 -- -- Middle MW-75S 103,000 HC2-15 -- -- Middle MW-75S 103,000 HC2-16 -- -- Middle 22 to 36 MW-22 6,550 HC2-17 Middle MW-22 6,550 HC2-18 -- -- Middle MW-22 6,550 HC2-19 -- -- Middle MW-75S 103,000 HC2-20 -- -- Middle 21 to 33 MW-75S 103,000 HC2-21 -- -- Middle MW-75S 103,000 HC2-22 -- -- Middle MW-75S 103,000 HC2-23 -- -- Middle MW-76S 5,630 HC2-24 -- -- Middle MW-76S 5,630 HC2-25 -- -- Middle 19 to 31 MW-76S 5,630 HC2-26 -- -- Middle MW-75S 103,000 HC2-27 -- -- Middle MW-75S 103,000 HC2-28 -- -- Middle MW-75S 103,000 HC2-29 -- -- Middle MW-75S 103,000 HC2-30 -- -- Middle MW-75S 103,000 High Concentration Area 3 (HC3) HC3-01* -77.7655747 36.0236406 Middle I. 16 to 30 MW-78S 22,800 HC3-01 * -77.7655747 36.0236406 Lower 34 to 50 MW-78D 8,900 Injection point will be offset 1 to 2 feet from middle aquifer injection location. HC3-02 -77.7656551 36.0236674 Middle / Lower I.MW-78S 16 to 30 / 34 to 50 / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-03 -77.7657350 36.0236360 Middle / Lower I. MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-04 -77.7656537 36.0236086 Middle / Lower I.MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-05 -77.7655734 36.0235710 Middle 18 to 30 MW-78S 22,800 HC3-06 -77.7656607 36.0235482 Middle MW-78S 22,800 HC3-07 -77.7657454 36.0235680 Middle / Lower 18 to 30 / 34 to 50 MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-08 -77.7658235 36.0236115 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-09 -77.7657987 36.0236806 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-10 -77.7657210 36.0237116 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-11 -77.7655856 36.0237123 Middle 17 to 29 MW-78S 22,800 HC3-12 -77.7655090 36.0236843 Middle MW-78S 22,800 HC3-13 -77.7654961 36.0236153 Middle MW-78S 22,800 HC3-14 -77.7654151 36.0236147 Middle MW-58S 5,400 HC3-15 -77.7654300 36.0236740 Middle MW-58S 5,400 High Concentration Area 4 HC4-01 -77.7658692 36.0247176 Lower 26 to 46 MW-30 3,260 HC4-02 -77.7659367 36.0246782 Lower MW-30 3,260 HC4-03 -77.7660249 36.0246705 Lower MW-30 3,260 Downgradient Injection Locations Downgradient Area 1 (DG1) DG1-01 -77.7670522 36.0261431 Middle 12 to 22 MW-37S 474 DG1-02 -77.7669615 36.0261376 Middle MW-37S 474 DG1-03 -77.7668709 36.0261305 Middle 12 to 22 MW-37S 474 DG1-04 -77.7667794 36.0261235 Middle MW-37S 474 DG1-05 -77.7666897 36.0261167 Middle 12 to 24 MW-37S 474 DG1-06 -77.7665991 36.0261102 Middle / Lower 12 to 22 / 25 to 41 MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-07 -77.7665085 36.0261034 Middle / Lower MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-08 -77.7664170 36.0260972 Middle / Lower MW-37S / MW 47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-09 -77.7663275 36.0260900 Middle / Lower MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-10 -77.7662363 36.0260834 Middle 12 to 22 MW-375 474 DG1-11 -77.7661460 36.0260770 Middle MW-375 474 DG1-12 -77.7660554 36.0260711 Middle MW-375 474 DG1-13 -77.7659645 36.0260639 Middle MW-375 474 DG1-14 -77.7658736 36.0260578 Middle MW-375 474 Downgradient Area 2 (DG2) DG2-01 -77.7677847 36.0261130 Lower 35 to 45 MW-74D 86.6 DG2-02 -77.7677117 36.0261572 Lower MW-74D 86.6 DG2-03 -77.7676389 36.0262016 Lower MW-74D 86.6 DG2-04 -77.7675651 36.0262460 Lower M8T-74D 86.6 Downgradient Area 3 (DG3) DG3-01 -77.7674031 36.0250133 Lower 38 to 50 M8T-41DDR 377 DG3-02 -77.7674787 36.0249712 Lower MW-41DDR 377 DG3-03 -77.7675542 36.0249275 Lower M8T-41DDR 377 DG3-04 -77.7676292 36.0248860 Lower M8T-41DDR 377 DG3-05 -77.7677045 36.0248436 Lower MW-41DDR 377 DG3-06 -77.7677786 36.0248015 Lower MW-41DDR 377 DG3-07 -77.7679308 36.0247159 Lower MW-41DDR 377 DG3-08 -77.7678559 36.0247572 Lower M8T-41DDR 377 DG3-09 -77.7680059 36.0246719 Lower MW-70D 172 DG3-10 -77.7680814 36.0246306 Lower 40 to 50 MW-70D 172 DG3-11 -77.7681559 36.0245881 Lower MW-70D 172 DG3-12 -77.7682308 36.0245456 Lower MW-70D 172 Notes: 1. ft BLS indicates feet below land surface. 2. DPT indicates direct push technology. 3. PCE indicates tetrachloroethene. 4. µg/L indicates micrograms per liter. 5. ✓ indicates zero-valent iron (ZVI) is included at the location. No fill indicates ZVI will not be included. 6. * indicates that the injection location will be comprised of two injection locations, offset 1 to 2 feet from each other. 7. Primary PCE Concentration(s) provides the most recent PCE sampling result (as of February 2021) for the monitoring well(s) used for design. 8. -- indicates not applicable. Sample location is located inside building. 9. All locations will be confirmed in the field, based on nearby monitoring wells. Table 4. Injection Location Volumes Allegion Rocky Mount Rocky Mount, North Carolina ABC+®Amendment Injection Locations (includes ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration Area - 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer HC2 HC2-01, HC2-02, HC2-03, HC2-04, HC2-05, HC2-06, HC2-07, HC2-08, HC2-09, HC2-10, HC2-11 16 to 32 16 to 18 14 283 109 0.45 2,264 872 3.60 18 to 20 14 283 109 0.45 20 to 22 14 283 109 0.45 22 to 24 14 283 109 0.45 24 to 26 14 283 109 0.45 26 to 28 14 283 109 0.45 28 to 30 14 283 109 0.45 30 to 32 14 283 109 0.45 HC3 HC3-01, HC3-02, HC3-03, HC3-04 16 to 30 16 to 18 14 284 108 0.45 1,988 756 3.15 18 to 20 14 284 108 0.45 20 to 22 14 284 108 0.45 22 to 24 14 284 108 0.45 24 to 26 14 284 108 0.45 26 to 28 14 284 108 0.45 28 to 30 14 284 108 0.45 Lower Aquifer HC3 HC3-02, HC3-03, HC3-04 34 to 50 34 to 36 14 288 105 0.45 2.304 840 3.60 36 to 38 14 288 105 0.45 38 to 40 14 288 105 0.45 40 to 42 14 288 105 0.45 42 to 44 14 288 105 0.45 44 to 46 14 288 105 0.45 46 to 48 14 288 105 0.45 48 to 50 14 288 105 0.45 ABC® Amendment Injection Location (no ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer HC118 HC1-01, HCl-02, HC1-03, HC1-04 to 32 18 to 20 14 758 49 0.45 5,306 343 3.15 20 to 22 14 758 49 0.45 22 to 24 14 758 49 0.45 24 to 26 14 758 49 0.45 26 to 28 14 758 49 0.45 28 to 30 14 758 49 0.45 30 to 32 14 758 49 0.45 HC1 HC1-05, HC1-06 14 to 36 14 to 16 14 764 43 0.45 8,404 473 4.95 16 to 18 14 764 43 0.45 18 to 20 14 764 43 0.45 20 to 22 14 764 43 0.45 22 to 24 14 764 43 0.45 24 to 26 14 764 43 0.45 26 to 28 14 764 43 0.45 28 to 30 14 764 43 0.45 30 to 32 14 764 43 0.45 32 to 34 14 764 43 0.45 34 to 36 14 764 43 0.45 HC2 HC2-12, HC2-13, HC2-14, HC2-15, HC2-25, HC2-26, HC2-27, HC2-28, HC2-29, HC2-30 19 to 31 19 to 21 14 754 53 0.45 4,524 318 2.70 21 to 23 14 754 53 0.45 23 to 25 14 754 53 0.45 25 to 27 14 754 53 0.45 27 to 29 14 754 53 0.45 29 to 31 14 754 53 0.45 HC2 HC2-16, HC2-17, HC2-18, HC2-19 22 to 36 22 to 24 14 758 49 0.45 5,306 343 3.15 24 to 26 14 758 49 0.45 26 to 28 14 758 49 0.45 28 to 30 14 758 49 0.45 30 to 32 14 758 49 0.45 32 to 34 14 758 49 0.45 34 to 36 14 758 49 0.45 HC2 HC2-20, HC2-21, HC2-22, HC2-23, HC-24 21 to 33 21 to 23 14 760 47 0.45 4,560 282 2.70 23 to 25 14 760 47 0.45 25 to 27 14 760 47 0.45 27 to 29 14 760 47 0.45 29 to 31 14 760 47 0.45 31 to 33 14 760 47 0.45 HC3 HC3-05, HC3-06, HC3-07, HC3-08 HC3-09, HC3-10 18 to 30 18 to 20 14 756 51 0.45 4,536 306 2.70 20 to 22 14 756 51 0.45 22 to 24 14 756 51 0.45 24 to 26 14 756 51 0.45 26 to 28 14 756 51 0.45 28 to 30 14 756 51 0.45 HC3 HC3-11, HC3-12, HC3-13, HC3-14, HC3-15 17 to 29 17 to 19 14 760 47 0.45 4,560 282 2.70 19 to 21 14 760 47 0.45 21 to 23 14 760 47 0.45 23 to 25 14 760 47 0.45 25 to 27 14 760 47 0.45 27 to 29 14 760 47 0.45 Table 4. Injection Location Volumes Allegion Rocky Mount Rocky Mount, North Carolina ABC® Amendment Injection Location (no ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Lower Aquifer HC1 HC1-01, HCl-O5, HC1-06 40 to 50 40 to 42 14 774 33 0.45 3.870 165 2.25 42 to 44 14 774 33 0.45 44 to 46 14 774 33 0.45 46 to 48 14 774 33 0.45 48 to 50 14 774 33 0.45 HC1 HC1-02, HC1-03, HC1-04 38 to 50 38 to 40 14 756 51 0.45 4,536 306 2.70 40 to 42 14 756 51 0.45 42 to 44 14 756 51 0.45 44 to 46 14 756 51 0.45 46 to 48 14 756 51 0.45 48 to 50 14 756 51 0.45 HC3 HC3-01, HC3-07, HC3-08 HC3-09, HC3-10 34 to 50 34 to 36 14 760 47 0.45 6,080 376 3.60 36 to 38 14 760 47 0.45 38 to 40 14 760 47 0.45 40 to 42 14 760 47 0.45 42 to 44 14 760 47 0.45 44 to 46 14 760 47 0.45 46 to 48 14 760 47 0.45 48 to 50 14 760 47 0.45 HC4 HC4-01, HC4-02, HC4-03 26 to 46 26 to 28 14 760 47 0.45 7.600 470 4.50 28 to 30 14 760 47 0.45 30 to 32 14 760 47 0.45 32 to 34 14 760 47 0.45 34 to 36 14 760 47 0.45 36 to 38 14 760 47 0.45 38 to 40 14 760 47 0.45 40 to 42 14 760 47 0.45 42 to 44 14 760 47 0.45 44 to 46 14 760 47 0.45 Downgradient Area - 0.30 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer DG1 DG1-05 12 to 24 12 to 14 14 934 104 0.55 5,604 624 3.30 14 to 16 14 934 104 0.55 16 to 18 14 934 104 0.55 18 to 20 14 934 104 0.55 20 to 22 14 934 104 0.55 22 to 24 14 934 104 0.55 DG1 DG1-01, DG1-02, DG1-03, DG1-04, DG1-06, DG1-07, DG1-08, DG1-09, DG1-10, DGl-11, DG1-12, DG1-13, DG1-14 12 to 22 12 to 14 14 930 108 0.55 4,650 540 2.75 14 to 16 14 930 108 0.55 16 to 18 14 930 108 0.55 18 to 20 14 930 108 0.55 20 to 22 14 930 108 0.55 Lower Aquifer DG1 DG1-06, DG1-07, DG1-08, DG1-09 25 to 41 25 to 27 14 950 87 0.55 7,600 696 4.40 27 to 29 14 950 87 0.55 29 to 31 14 950 87 0.55 31 to 33 14 950 87 0.55 33 to 35 14 950 87 0.55 35 to 37 14 950 87 0.55 37 to 39 14 950 87 0.55 39 to 41 14 950 87 0.55 DG2 DG2-01, DG2-02, DG2-03, DG2-04 35 to 45 35 to 37 14 940 97 0.55 4,700 485 2.75 37 to 39 14 940 97 0.55 39 to 41 14 940 97 0.55 41 to 43 14 940 97 0.55 43 to 45 14 940 97 0.55 DG3 DG3-01, DG3-02, DG3-03, DG3-04, DG3-05, DG3-06, DG3-07, DG3-08, DG3-09 38 to 50 38 to 40 14 949 89 0.55 5,694 534 3.30 40 to 42 14 949 89 0.55 42 to 44 14 949 89 0.55 44 to 46 14 949 89 0.55 46 to 48 14 949 89 0.55 48 to 50 14 949 89 0.55 DG3 DG3-10, DG3-11, DG3-12 40 to 50 40 to 42 14 934 104 0.55 4.670 520 2.75 42 to 44 14 934 104 0.55 44 to 46 14 934 104 0.55 46 to 48 14 934 104 0.55 48 to 50 14 934 104 0.55 Notes: 1. ft BLS indicates feet below land surface. 2. gal indicates gallons. 3. ZVI indicates zero-valent iron. 4. lb indicates pound. 5. ft3 indicates cubic foot. 2. HYDROGEOLOGIC EVALUATION — Per 15A NCAC 02C .0225(f)(41. provide a hydrogeologic evaluation of the injection zone that includes all of the following: (A) Regional and local geology and hydrology; (B) Changes in lithology underlying the facility; (C) Depth to bedrock; (D) Depth to the mean seasonal high water table; (E) Hydraulic conductivity, transmissivity, and storativity, of the injection zone based on tests of site -specific material, including a description of the test(s) used to determine these parameters; (F) Rate and direction of groundwater flow as determined by predictive calculations or computer modeling; (G) Lithostratigraphic and hydrostratigraphic logs of any existing test and injection wells; and (H) For systems re -injecting treated on -site contaminated groundwater only- evaluation of infiltration galleries or injection wells. (A) Rocky Mount is located in the Mesozoic and Cenozoic Coastal Plain geologic region of North Carolina. The Facility is located near the fall line where Tertiary marine sediments overlap Paleozoic crystalline igneous, metamorphic, and sedimentary rocks of the Eastern Slate belt. There are three water -bearing units identified as the Upper, Middle and Lower Aquifers that are largely separated by confining units in the vicinity of the Facility. These aquifers consist of unconsolidated terrace deposits of the Sunderland Formation and are highly complex interbedded sand and clay layers of marine origin. The Yorktown Formation is a flat -lying, Site -wide, low permeability clay unit that acts as an effective aquitard beneath the Lower aquifer. The Pee Dee Formation underlies the Yorktown Formation in this region but has not been locally encountered at this Site to date. (B) The Site generally follows the following lithology from shallowest to deepest: - Layer 1 - Upper Clay — approximately between 0 to 18 feet below ground surface in the vicinity of AOI-1 and AOI-2, this layer consists predominantly of firm, low plasticity clay with discontinuous pockets of perched groundwater in fine sand seams. - Layer 2 — Middle Aquifer — approximately between 18 to 28 feet below ground surface in the vicinity of AOI-1 and AOI-2, this layer consists predominantly of laminated fine- grained sands, silty sands and clayey sands across the Site. This unit is locally absent east -west across the center of the Site and is replaced by a large clay paleo-feature. - Layer 3 — Middle Confining Clay — consists predominantly of soft to firm, medium to highly plastic clay. This layer is variable in thickness and absent at a few locations at the Site, most notably, towards the northwest portion across highway US 301 near Belmont Lake. - Layer 4 — Lower Aquifer - typically found deeper than 37 feet below ground surface, this layer consists predominantly of dark gray, medium to coarse grained, well sorted sands and represents a major water bearing unit at the Site. - Layer 5 — Yorktown Formation — typically found at deeper than 45 feet below ground surface, this low permeability unit consists of fossiliferous clay. Also refer to NCD065300519 Annual Report for 2020 (Geosyntec, 2021a); Figures 4-6 (Geosyntec, 2017a; attached) for additional details. (C) Yorktown Formation: fossiliferous clay with varying amounts of fine-grained sand, bluish gray, shell material commonly concentrated in lenses; mainly in area north of Neuse River. Duplin Formation: shelly, medium- to coarse -grained sand, sandy marl, and limestone, bluish gray; mainly in area south of Neuse River (USGS, 2020). Depth to bedrock at the Site is unknown. (D) Average depth to water 15 ft below ground surface (Final Thermal Design Report). In the southwest portion of the Facility, depth to water is typically encountered at 10 to 15 feet below ground surface (ft bgs) in wells screened in the Middle Aquifer and at depths of 15 to 20 ft bgs in wells screened in the Lower Aquifer. Based on historical head measurements, a downward vertical gradient is observed between the Middle and Lower Aquifers in the southern portion of the Facility and an upward vertical gradient is observed towards Belmont Lake in the northwestern portion of the Facility. (E) The hydraulic conductivity of the various lithologic units at the Site measured through a series of historic pump and slug aquifer tests are summarized in Table 3 from the Groundwater Modeling Report - NCD065300519 (Geosyntec, 2017a). Average hydraulic conductivities for the stratigraphic units at the Site are as follows: • Upper Confining Clay: 0.07 ft. /day • Middle Aquifer: 0.61 ft. /day • Lower Aquifer: 28.67 ft. /day • Yorktown Formation: 0.09 ft. /day The hydraulic conductivity of the Lower Aquifer is greater than that of the Middle Aquifer and includes a thicker transmissive unit. Additionally, the Lower Aquifer has a higher hydraulic conductivity in the northern portion of the Site as compared to the south. Refer to Appendix G-Modeling Report (Geosyntec, 2017a; attached). (F) Horizontal Flow: Groundwater at the Site generally flows to the northwest in both the Middle and Lower Aquifers. Refer to Figures 3A and 3B (Geosyntec, 2021a; attached) Vertical Flow: Based on historical head measurements, a downward vertical gradient is observed between the Middle and Lower Aquifers in the southern portion of the Facility and an upward vertical gradient is observed towards Belmont Lake in the northwestern portion of the Facility (Geosyntec, 2017a). A North Carolina Department of Environment, Health, and Natural Resources study indicated that regional groundwater recharge ranges between 4.2 and 12.6 inches/year (Heath, 1994). (G) N/A (H) N/A Belmont Lake NORTH CAROLINA ESLEYAN COLLEG 35 Notes 1. Property boundary is from Nash County Website (28 March 2017). 1,000500 0 1,000 Feet USGS Topographic Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, P< NC License No.: C-351 u 1 CHARLOTTE, NC I MARCH 2018 Figure 1 A:\Nrojects\Alleglon\kocky Mount\.0 rlgures\uib_tuv\rvixu\rvwWP Mxus\rlgure 1- iopo rviap.mxo. Arcenweu. 5/t/tuv. \GIS 2017\MXD\IM IL c c an narbor-01 \A:\Proir it logr MW-55S D D PT-07 SS8 -RW-7 MiHPT-10 DPT-05 LEGEND 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool 2014 Hand Augered Boring • Monitoring Well Aspen Investments Property Boundary Cross -Section Location Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Property boundary is from Nash County Website (28 March 2017). MW-22 MW-62S HA-04 2014 and 2017 Sample and Cross -Section Location Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 4 Legend • • • Monitoring Well 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool Facility Building Geologic Material Paleochannel Upper Clay Middle Aquifer Middle Confining Unit Lower Aquifer Lower Confining Unit • • • AOI-2 MW-55S SS20 DPT-06 ativomwori A' DPT-07 SS8_ W 7 SSO MiHPT-10 _- 7 I�A71-I PT-'11 W-7M 1 2 • RW- 5S17 2 r- MiHPT-12 SS33 DP S3 DPT-08 S S SS6 SS22 SS19 Mi H PT-09 Ir" 464.;7777. SS32 SS17 RW2 SS2 SS9 SS18 MiHPT-09 0 25 Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Geologic cross-section was modelled in Earth Volumetric Studio (EVS). 3. Boreholes within 10 ft are projected onto cross-section. 4. ft amsl stands for feet above mean sea level. 5. Elevations are from a digital elevation model (DEM) generated using LiDAR data from North Carolina's Spatial Data Download. 50 75 100 Distance (ft) 125 150 175 200 225 130 m —115 < 0 a) 3 —100� 85 Geologic Cross Section A -A' Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 5 c Y Legend • Monitoring Well • 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool 2014 Hand Augered B L 0 0 0 50 SS12 Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Geologic cross-section was modelled in Earth Volumetric Studio (EVS). 3. Boreholes within 10 ft are projected onto cross-section. 4. ft amsl stands for feet above mean sea level. 5. Elevations are from a digital elevation model (DEM) generated using LiDAR data from North Carolina's Spatial Data Download. Geologic Material Upper Clay Middle Middle Confining Unit Lower Lower Confining Unit • • • 100 MW65D MiHPT-OC SS4 SS11 NM 150 WRW-8M RW-3 Mi g MW-3 Distance (ft) MiH PT-03S SS12 Mi H PT-02 200 SS28 0 SS13 DPT-12 DPT-11 SS27 WRW-9M MW-10D SS14 SS25 MiHPT-05 HA-01 0 250 0 0 SS 11 SS5 DPT-03 0 0 0 S28 SS13 0 300 0 AOI-1 r HA-03 350 130 90 70 Geologic Cross Section B-B' Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 6 Prepared for Schlage Lock Company LLC 11819 N. Pennsylvania Street Carmel, Indiana 46032 GROUNDWATER MODELING REPORT NCD065300519 FORMER SCHLAGE LOCK FACILITY 213 RED IRON ROAD, ROCKY MOUNT, NORTH CAROLINA Prepared by: Geosyntec' Geosyntec Consultants of NC, PC 1300 South Mint St, Suite 300 Charlotte, North Carolina 28203 Project Number: CHA8439 June 2017 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec'> consultants TABLE OF CONTENTS Section Page No. 1. INTRODUCTION 1 1.1 Terms of Reference 1 1.2 Groundwater Model Objective 1 1.3 Report Organization 2 2. SI1h SUMMARY 3 2.1 Site Background and History 3 2.2 Site Geology and Hydrogeology 3 2.3 Groundwater Recharge 5 2.4 Extent of Site -Related CVOC Impacts 5 3. MODEL CODES 6 4. MODEL DESIGN 7 4.1 Groundwater flow model 7 4.1.1 Model Grid 7 4.1.2 Hydrogeologic Parameters 8 4.1.3 Boundaries 8 4.1.4 Model Recharge and Groundwater Withdrawal 9 4.2 Contaminant Transport Model — Source Mass Definition 9 5. MODEL CALIBRATION 12 5.1 Groundwater Flow Model 12 5.2 Transport Model 12 6. MODEL UNCERTAINITY 14 7. PREDICTIVE SIMULATIONS 17 8. CONCLUSIONS 20 9. REFERENCES 21 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 LIST OF TABLES Geosyntec'> consultants Table 1 — Summary of Monitoring and Recovery Well Construction Details Table 2 — Summary of Recovery Well Pumping Rates Table 3 — Summary of Measured Aquifer Parameters Table 4 — Summary of Modeled Hydrogeologic Parameters Table 5 — Representative Hydraulic Conductivity for Unconsolidated Sedimentary Material Table 6 — Tetrachloroethene mass assignment in impact zones and virtual remediation Table 7 - Summary of FOC and Resistivity Results in Soil and Aquifer Matrix Samples Table 8 — Measured/Calibrated Groundwater Elevations and Residuals LIST OF FIGURES Figure 1 — Site Layout Map Figure 2 — Topographic Map and Boundary Conditions Figure 3 — Model Grid Figure 4 — Hydraulic Conductivity Zonation of Middle A Layers Figure 5 — Model Recharge Zones Figure 6 — PCE Plume Map Figure 7 — Measured and Calibrated Groundwater Elevations Figure 8 — Modeled Middle Aquifer Groundwater Contours Figure 9 - Modeled Lower Aquifer Groundwater Contours Figure 10A — Modeled Tetrachloroethene Isocontours in the Remedy (No PCE Remedy Scenario) Figure 10B — Modeled Tetrachloroethene Isocontours in the Remedy (Soil > 100 mg/kg Treated to 90%) Figure 10C — Modeled Tetrachloroethene Isocontours in the Remedy (Soil > 100 mg/kg Treated to 99%) Figure 11A — Modeled Tetrachloroethene Isocontours in the Remedy (No PCE Remedy Scenario) Figure 11 B — Modeled Tetrachloroethene Isocontours in the Remedy (Soil > 100 mg/kg Treated to 90%) Figure 11C — Modeled Tetrachloroethene Isocontours in the Remedy (Soil > 100 mg/kg Treated to 99%) quifer and Middle Confining and Residuals Middle Middle Middle Aquifer After Source Aquifer After Source Aquifer After Source Lower Aquifer After Source Lower Aquifer After Source Lower Aquifer After Source 11 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 1. INTRODUCTION 1.1 Terms of Reference Geosyntec Consultants of NC, PC (Geosyntec) has prepared this Groundwater Modeling Report (the "Model Report") on behalf of Schlage Lock Company LLC ("Schlage") for the Former Schlage Lock Facility located at 213 Red Iron Road in Rocky Mount, North Carolina ("Site") (Figure 1). The facility consists of a 49.15-acre property that includes a 196,000-ft2 building and a remediation out -building. Figure 1 presents the Facility layout and well locations and well locations and Site -related well construction information is presented in Table 1. Groundwater remediation, vapor intrusion (VI) mitigation, and monitoring activities at the Site are being conducted in accordance with a North Carolina Department of Environmental Quality (NCDEQ) issued Administrative Order (AO) in Lieu of a Post -Closure Permit, which initially became effective in December 2011 (Docket Number AA2011-084). On December 2, 2013, Schlage Lock Company LLC was separated from Ingersoll Rand to become a part of Allegion, plc (Allegion). As part of the transaction, Allegion acquired the environmental liability of the Site. In 2014, the property ownership was transferred to Aspen Investments, Inc from Belmont Commerce Park, LLC. A draft revised AO was submitted to the NCDEQ by Allegion and Aspen Investments, Inc. in August 2014 and finalized in November 2016 to primarily address changes in Site ownership. Remedial operations at the Site are being conducted consistent with the current AO. This Model Report serves as an attachment to the "Interim Measures Work Plan" (IM Work Plan; Geosyntec, 2017), which describes the results of source area -focused investigation activities that were conducted by Geosyntec in January and February 2017 and presents a work plan and preliminary/conceptual basis of design for targeted source zone interim remedial measures utilizing In -Situ Thermal Remediation (ISTR) as the selected technology to remediate vadose zone and aquifer matrix materials (i.e. saturated soils beneath the groundwater table) in two primary source zones (defined herein as "areas of interest" [AOI]) AOI-1 and AOI-2. 1.2 Groundwater Model Objective In October 2016, Geosyntec presented a Path to Closure Plan ("Closure Plan") for the Site to NCDEQ, which presented a step -wise approach to final Site remediation and achieving Site closure (Geosyntec, 2016). Consistent with this NCDEQ-approved Closure Plan and the anticipated pursuit of a risk -based closure for the Site pursuant to NCDEQ's Technical Guidance for Risk -Based Environmental Remediation of Sites (NCDEQ, 2017), Geosyntec conducted groundwater fate and transport modeling activities to support the design of targeted, effective source treatment remedies at two source areas (AOI-1 and AOI-2). The CHA8439 1 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants objective of this groundwater model is to predict the potential outcomes of a no -treatment scenario and two possible interim measures (IM) source remedy scenarios at AOI-1 and AOI-2 and, compare simulated groundwater concentrations with non -Site -specific default NCDEQ and United States Environmental Protection Agency (USEPA) screening values to help guide the establishment of IM target remedial goals. 1.3 Report Organization The remainder of the Model Report has been organized into the following remaining sections: • Section 2 — Site Summary — presents an overview of the Site setting and history, a current understanding of Site geology, hydrogeology and recharge, and Geosyntec's interpretation of the extent of site -related chlorinated volatile organic compound (CVOC) impacts based upon a review of historical documents, routine groundwater monitoring activities, and the investigation of potential source areas conducted in October 2014 and January 2017; • Section 3 — Model Codes - presents various model codes that were utilized; • Section 4 — Model Design — describes how the groundwater flow and transport models were setup including model gridding, hydrogeologic parameter values, model boundaries and source mass assignment. • Section 5 — Model Calibration — describes groundwater flow and transport calibrations performed with available Site data. • Section 6 — Model Uncertainty — presents a discussion of some of the uncertainties associated with groundwater -flow modelling process, the physical characterization and potential impacts of the uncertainty. • Section 7 — Predictive Simulations — presents the results and discussion of predictive simulations performed at the Site. • Section 8 — Conclusions — summarizes the conclusions derived from predictive simulations performed at the Site. • Section 9 — References - provides a list of documents used for preparation of this Report. CHA8439 2 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 2. SITE SUMMARY 2.1 Site Background and History From the early 1970s until 1988, Schlage manufactured security system related hardware at the Facility. After the discovery of CVOCs in site groundwater in the late 1980s, Schlage (at times acting through its former parent company Ingersoll Rand) conducted extensive soil and groundwater investigations, developed a conceptual site model (CSM), and designed and implemented comprehensive Interim Measures, which continue to operate and achieve a level of treatment that is protective of human health and the environment. In 1993, the Final RCRA Facility Assessment (RFA) Report was submitted to NCDEQ. The RFA identified 13 solid waste management units (SWMUs) and four (4) areas of concern (ADCs). Since 1992, a groundwater pump and treat remediation system has been in operation for the Facility. Sixteen recovery wells are active as part of the existing pump and treat system which remains operational today. Table 1 provides a summary of Monitoring and Recovery Well Construction Details. Recovery well pumping rates are summarized in Table 2. A full-scale groundwater bioremediation program was conducted in June 2007 in the off -site portion of the CVOC groundwater contaminant plume. Six hundred pounds of Anaerobic BioChem (ABC), a proprietary nutritional substrate, was injected via direct -push technology along with two liters of Dehalococcoides bacteria. A second injection event took place in February 2008. All activities were in accordance with the NCDEQ Underground Injection Control Permit No. W 10500133. The bioremediation system has been effective in reducing the concentration of CVOCs in the off -site contaminant plume through reductive dechlorination. A Sub -Slab Vapor Depressurization System (SSDS), as approved by NCDEQ in December 2010, was installed and is operational today. Groundwater monitoring and remedial performance monitoring activities are summarized in annual groundwater monitoring and corrective action status reports (ERM, 2012 and 2013, Geosyntec, 2014, 2015 and 2016). 2.2 Site Geology and Hydrogeology Rocky Mount is located in the Mesozoic and Cenozoic Coastal Plain geologic region of North Carolina. The Facility is located near the fall line where Tertiary marine sediments overlap Paleozoic crystalline igneous, metamorphic, and sedimentary rocks of the Eastern Slate belt. There are three water -bearing units identified as the Upper, Middle and Lower Aquifers that are largely separated by confining units in the vicinity of the Facility. These aquifers consist of unconsolidated terrace deposits of the Sunderland Formation and are highly complex interbedded sand and clay layers of marine origin. The Yorktown Formation is a flat -lying, Site -wide, low permeability clay unit that acts as an effective aquitard beneath the Lower aquifer. The Pee Dee Formation underlies the Yorktown Formation in this region CHA8439 3 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants but has not been locally encountered at this Site to date. The general lithology at the Site from shallowest to deepest consists of: • Layer 1 - Upper Clay — approximately between 0 to 18 feet below ground surface in the vicinity of AOI-1 and AOI-2, this layer consists predominantly of firm, low plasticity clay with discontinuous pockets of perched groundwater in fine sand seams. • Layer 2 — Middle Aquifer — approximately between 18 to 28 feet below ground surface in the vicinity of AOI-1 and AOI-2, this layer consists predominantly of laminated fine-grained sands, silty sands and clayey sands across the Site. This unit is locally absent east -west across the center of the Site and is replaced by a large clay paleo-feature. • Layer 3 — Middle Confining Clay — consists predominantly of soft to firm, medium to highly plastic clay. This layer is variable in thickness and absent at a few locations at the Site, most notably, towards the northwest portion across highway US 301 near Belmont Lake. • Layer 4 — Lower Aquifer - typically found deeper than 37 feet below ground surface, this layer consists predominantly of dark gray, medium to coarse grained, well sorted sands and represents a major water bearing unit at the Site. • Layer 5 — Yorktown Formation — typically found at deeper than 45 feet below ground surface, this low permeability unit consists of fossiliferous clay. In the southwest portion of the Facility, depth to water is typically encountered at 10 to 15 feet below ground surface (ft bgs) in wells screened in the Middle Aquifer and at depths of 15 to 20 ft bgs in wells screened in the Lower Aquifer. The groundwater elevation data and contours are locally influenced by the current pumping conditions at the Facility. Groundwater at the Facility generally flows to the northwest in both the Middle and Lower Aquifers. Based on historical head measurements, a downward vertical gradient is observed between the Middle and Lower Aquifers in the southern portion of the Facility and an upward vertical gradient is observed towards Belmont Lake in the northwestern portion of the Facility. The hydraulic conductivity of the various lithologic units at the Site measured through a series of historic pump and slug aquifer tests are summarized in Table 3. Data summarized in this table is obtained from two historic reports (Wenck, 1994; ERM, 2013). As presented in Table 3, arithmetic mean hydraulic conductivities presented in the two reports are different for the Middle and Lower Aquifers. However, neither reports provide test data to verify summarized hydraulic conductivity previously calculated and reported, which adds to CHA8439 4 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants the model uncertainty as described in Section 6. In general, historical aquifer test results indicate that the Lower Aquifer has a higher hydraulic conductivity than the Middle Aquifer. 2.3 Groundwater Recharge Groundwater recharge occurs through infiltration of precipitation. A North Carolina Department of Environment, Health, and Natural Resources study indicated that regional groundwater recharge ranges between 4.2 and 12.6 inches/year (Heath, 1994). A historic site report estimated groundwater recharge at the Site to be approximately 10 inches/year but, provided no additional information on how this value was derived (Capsule, 1991). 2.4 Extent of Site -Related CVOC Impacts Based on a review of historical information and recent source area investigation activities conducted by Geosyntec in October 2014 and January 2017, three potential source areas or "AOIs" were identified. Additional information on these recent source area investigation activities may be found in the IM Work Plan (Geosyntec, 2017). The three AOIs are described as follows: • AOI-1: an area in the southeast portion of the Facility which includes AOC 2 (identified soil contamination in the southeastern parking lot and former drum storage area) and SWMU 10 (a former filling vault for PCE and caustic soda). Additionally, this area includes a drainage ditch which is suspected to have potentially received contaminant runoff. • AOI-2: an area in the southwest portion of the building, both within and outside of the building footprint that includes: the former hand degreaser room; SWMUs 7 and 8 (vapor degreaser trench and storage tank within the vapor degreaser room); and SWMU 9 (contaminated soil and a former dry well outside lacquer room). • AOI-3: an area toward the northwestern portion of the Facility that includes: AOC 1 (soil contamination in the northern parking lot and railroad spur area); a former drum storage area; and a dumpster used for storage of degreaser filters prior to disposal. Identified CVOC impacts at AOI-3 are not presently considered for interim remedial measures because impacts at AOI-3 (maximum concentration of 33 milligrams per kilogram [mg/kg] in saturated soils) do not appear to warrant aggressive remedial actions. Consequently, AOI-3 was not included in the source mass definition input to the groundwater model described in Section 4.2 and subsequent predictive simulations. CHA8439 5 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 3. MODEL CODES The United States Geological Survey (USGS) modular three-dimensional finite difference groundwater flow model (MODFLOW NWT) was used to simulate groundwater flow at the Site (Niswonger et al., 2011). Groundwater flow directions at the Site were illustrated using MODPATH, a particle -tracking post -processing program that works with MODFLOW (Pollock, 2016). A modular three- dimensional multispecies transport model (MT3DMS) was used in conjunction with MODFLOW NWT to simulate changes in concentrations of chemicals of concern in groundwater in space and time due to advection, and hydrodynamic dispersion (Zheng and Wang, 1999, Niswonger et al., 2011). Visual MODFLOW Flex (VMOD FLEX) version. 4.0.1133.1 (64-bit), a graphical user environment for performing groundwater simulations, developed by Waterloo Hydrogeologic, was used as a pre-processor and post -processor. CHA8439 6 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 4. MODEL DESIGN The following sections detail the design of both the groundwater flow and transport model. 4.1 Groundwater flow model A three-dimensional steady state flow model was created by review of physical boundaries on the USGS 7.5-minute quadrangle topographic map shown on Figure 2. The constant head boundaries assigned to perennial creeks and lake identified on the topographic map were: Belmont Lake to the northwest, Beech Branch to the north and east, Compass Creek to the southwest and an unnamed creek to the east and south. Additionally, there are several unnamed, ephemeral creeks identified on the topographic map which were simulated with the MODFLOW drain package as internal boundaries within the model domain. No -flow boundaries, as defined by topography to represent groundwater flow divides, are also assigned in the model. The model boundaries are shown on Figure 2. Elevations of surface water features used for constant head boundaries were obtained from a Digital Elevation Model (DEM) generated using LiDAR data' providing coverage for the area of interest. 4.1.1 Model Grid The total area modeled was approximately 2.3x108 square feet (ft2) or 8.4 square miles (mi2). The model was discretized into 139 columns and 96 rows. As shown in Figure 3, the telescoped grid spacing ranges from a low of 50 feet in the vicinity of the Site to 1,050 feet near the outer edges on the model domain. A 3-D lithologic model of the Site was generated using C Tech's Earth Volumetric Studio (EVS) software version 2016.8 by utilizing a total of 110 soil boring logs, well construction logs, membrane interface probe and hydraulic profiling tool logs from the study area, generated between 1988 and 2017. These borings are located across the study area both on - property and outside the property boundary particularly to the north, west and northwest towards Belmont Lake. Due to the varying thickness of geologic units and elevation changes, the lithologic model layers were interpolated by a three-dimensional kriging scheme in EVS. This geologic model included six layers: Upper Clay, Paleochannel, Middle Aquifer, Middle Clay Confining Unit, Lower Aquifer, and Lower Clay Confining Unit/Yorktown. The Middle Clay layer is absent towards the northwest and western portion of the domain across highway US 301, consistent with known site geology. It is also assumed that the Middle Clay layer is leaky in an "interconnected zone" outside the Site boundary towards the southeast portion of the model domain as shown in Figure 4. The elevations of top of each geologic layer created in EVS was rasterized, and a uniform interpolation scheme in VMOD FLEX was used in constructing the six groundwater model 1 Quality Level 2 LiDAR Collection available through North Carolina's Spatial Data Download Page https://rmp.nc.gov/sdd/ CHA8439 7 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants layers. Ground surface elevations within the model domain were obtained from the DEM generated using LiDAR data'. 4.1.2 Hydrogeologic Parameters The hydrogeologic parameters for each model layer used in the groundwater flow model presented in Table 4 were adjusted within the bounds of historically reported (Table 3; Wenck, 1994, ERM, 2013) and literature values (Table 5; Domenico and Schwartz, 1990) during the calibration process described in Section 5. Comparison of these calibrated hydrogeologic parameters used in the model, with historically reported values, indicates that the model horizontal hydraulic conductivity value for most layers are generally within the bounds of those reported at the Site except the Lower Aquifer. Calibrated horizontal hydraulic conductivity value for the Lower Aquifer of 120 feet/day is higher than the historically reported value of 42 feet/day. Although higher than the historically reported value, modeled Lower Aquifer hydraulic conductivity of 120 feet/day is less than the literature value of 142 feet/day reported for medium grained sands (Table 5). Medium to coarse grained sands of the Lower Aquifer were visually identified during field investigations and a review of historic lithologic logs. The historically reported conductivity value of 42 feet/day (Table 3) was reportedly estimated using slug -tests which have been shown to bias to lower values by 2 and 10 times (Butler, 1998). A certain degree of variation (up to one or even two orders of magnitude) can result depending on the methods used to interpret the tests (Butler, 1998). The historic reports do not provide test data to verify summarized hydraulic conductivity previously calculated. It is likely that the horizontal hydraulic conductivity value for the Lower Aquifer lies between the bounds of historically reported and literature values. For the Paleochannel and Middle Clay units that have no reported hydraulic conductivity data, it is assumed that they have hydrogeologic properties similar to the Upper Clay and the Lower Clay units respectively, where present. In the southeast portion of the model domain, an interconnected zone between the Middle Aquifer and Lower Aquifer units is assigned an intermediate conductivity value to simulate the connectivity between the two aquifers as presented in Table 4. 4.1.3 Boundaries As discussed in Section 4.1 and shown on Figure 2, no flow, constant head, and drain boundaries were used to bound the model domain. Where constant head boundaries are present, head elevations were assigned based on surface water level information available from the DEM generated using LiDAR data2. The creeks in the model domain and shallow ditches near the Site were simulated with the MODFLOW drain package. The drain package 2 Quality Level 2 LiDAR Collection available through North Carolina's Spatial Data Download Page https://rmp.nc.gov/sdd/ CHA8439 8 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants uses a conductance value to simulate the flux of groundwater to a drainage feature. For MODFLOW, the drain conductance is calculated as follows (Mehl and Hill, 2010): K C= —xw t Where, C = conductance (feet2/day)/feet K = bottom sediment vertical hydraulic conductivity (feet/day) t = bottom sediment thickness (feet) w = width of the bottom sediment material (feet) Drains in the model domain were initially set to a bottom sediment hydraulic conductivity value of 1 feet/day, a bottom sediment thickness and width of 1 foot, yielding an initial conductance of 1 (feet2/day)/feet. The drain package also requires a drain elevation which was obtained from the DEM generated using LiDAR data. 4.1.4 Model Recharge and Groundwater Withdrawal As presented in Section 2.3, net groundwater recharge at the Site is suggested to be 10 inches/year and range regionally between 4.2 and 12.6 inches/year (Capsule, 1991; Heath, 1994). Recharge rates used in the model were varied within these reported values during model calibration. A recharge value of 11.5 inches/year was applied to most of the model domain (recharge zone 1) for the calibrated model as shown on Figure 5. Also shown on Figure 5 are two areas northeast (recharge zone 2) and northwest (recharge zone 3) of the Site with recharge less than 11.5 inches/year. The area to the northeast (recharge zone 2) is an industrial facility with a large (approximately 20 acres) paved surface that was assigned a recharge of 5 inches/year to reflect the reduce recharge caused by the paved surface. The area to the northwest (recharge zone 3) is a heavily forested area of 22 acres with potential evapotranspiration. The evapotranspiration rate in this area was accounted for by reducing recharge in this zone by about 1 inch/year. Evapotranspiration rates for deciduous trees can vary depending on the season but is approximately 3 inches/year (Ford and Vose, 2006). Groundwater withdrawal at the Site is primarily through the network of recovery wells actively pumping from the Middle and Lower Aquifers. Average pumping rates for these wells used in the model are presented in Table 2. 4.2 Contaminant Transport Model — Source Mass Definition To facilitate understanding of the vertical and lateral extent of CVOCs within AOI-1 and AOI-2, a 3-dimensional model of the PCE distribution was generated using EVS v.2016.8. PCE is chosen as the target contaminant because it is generally several orders of magnitude greater than other detected CVOCs within AOI-1 and AOI-2. Details on the technical approach and parameter data applied to generate the EVS model, and results are presented CHA8439 9 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants in Section 4.1 and Appendix E of the IM Work Plan (Geosyntec, 2017). The EVS model was used to determine the mass and volume of soils impacted by PCE above a 10 mg/kg and 100 mg/kg threshold. A total of 6,000 lbs and 1,300 lbs of PCE mass was calculated from the combined AOI-1 and AOI-2 for the greater than 100 mg/kg contoured volume and greater than 10 mg/kg and less than 100 mg/kg volume, respectively. In addition to EVS modeling of impacted saturated and unsaturated soils (which were analyzed on a wet -weight basis and include impacted soils, groundwater and dense non - aqueous phase liquid [DNAPL], if present, within the sample), to provide a more conservative estimate of impacted mass, an estimation of potential DNAPL mass was calculated based on DNAPL partitioning thresholds and the impacted volumes. Equations, assumptions and soil properties used in these calculations are summarized in Appendix F of the IM Work Plan (Geosyntec, 2017). As presented in Appendix F of the IM Work Plan, the threshold PCE soil concentration indicating DNAPL presence was estimated to be 42 mg/kg and the estimated DNAPL mass present in AOI-1 and AOI-2 is approximately 5,000 pounds. This additional 5,000 pounds of DNAPL mass was added to the 100 mg/kg contoured interval, for a total PCE mass of approximately 11,000 pounds within AOI-1 and AOI-2. Based on the estimated PCE soil concentration threshold of 42 mg/kg indicating the presence of DNAPL, DNAPL mass is not considered likely to be present in significant quantity within the greater than 10 mg/kg and less than 100 mg/kg contoured interval and therefore the EVS calculated mass of 1,300 lbs has been assigned to this interval. The distribution of total PCE mass in each in each geologic unit was proportioned by combining mass estimates with the 3-D lithologic model generated in EVS described in Section 4.1.1. Results of PCE mass distribution in each geologic unit and corresponding volume of impacted soils is summarized in Table 6. The modeled PCE mass and corresponding soil volumes were used to determine an average soil concentration for each layer. Average soil concentrations were translated to the aqueous concentrations presented in Table 6 through a partitioning coefficient (Kd) that was calculated based on measured fraction of organic carbon (FOC) presented in Table 7 as follows: Cs C=Kd=KocxFOC w where, Cs is the soil concentration. Cw is the aqueous concentration. Kd is the partitioning coefficient between soil and groundwater. Koc is the organic carbon partitioning coefficient assumed to be 200 (RSP, 1994). FOC is the fraction organic carbon. As presented in Table 7, no appreciable FOC was measured in the Upper Clay and Middle Aquifer layers and, very low FOC (between 0.59% and 0.99%) was measured in the Middle CHA8439 10 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants Clay layer. As a conservative assumption, the partitioning coefficient (Ka) is calculated assuming a low FOC value of 0.05% (close to the method detection limit) for all lithologic layers except the Middle Clay layer for which a measured FOC of 0.59 is assumed. Assuming a conservatively low FOC value would yield the highest aqueous concentrations computed from soil concentrations based on the above equation. Additionally, aqueous concentrations calculated from these FOC and Ka values presented in Table 6 fall within the range of aqueous concentrations observed at the Site for the Middle and Lower Aquifers in monitoring well and direct push technology (DPT) groundwater samples collected in the vicinity of AOI-1 and AOI-2. The model assumes that no existing dissolved groundwater plume is assumed to be in place at the initial model timestep because model objectives were to simulate the design of an aggressive, effective source treatment remedies and, help guide the establishment of IM target remedial goals at AOI-1 and AOI-2. Additionally, other remedial actions, such as continued operation of the existing groundwater extraction and treatment system and possible in situ bioremediation, are assumed to take place following source treatment which were not predicted in this stage of modeling. Computed aqueous concentrations were assigned to each layer using footprints measured in ArcGIS software using a two-dimensional projection from the EVS model. CHA8439 11 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 5. MODEL CALIBRATION 5.1 Groundwater Flow Model The flow model was calibrated to approximately match the observed piezometric heads and, groundwater flow direction in the Middle and Lower Aquifers with the network of recovery wells actively pumping on -Site. To accomplish this, the geologic units' properties and recharge rates were varied within the specified ranges until the model output most closely matched the measured data. The model was calibrated to representative groundwater elevations and recovery well pumping rates from March 2015. The simulated groundwater elevations are compared to the static water levels measured in March, 2015 as shown in Figure 7 and Table 8. The results of this comparison show that simulated and observed groundwater elevations correlate well (correlation coefficient, r2 =0.89) and the normalized root mean squared error (NRMSE) is generally acceptable (i.e. <10%). Furthermore, the computed mass water balance within MODFLOW showed a discrepancy of 0.004%. While static water levels measured in March, 2015 were used in the calibration process, simulated groundwater elevations were also compared to more recent measurements in March, 2016 and March, 2017. The results of this comparison show that the NRMSE for 3/2016 and 3/2017 were also generally acceptable (between 9% and 11%), validating that March, 2015 calibration dataset used is representative. Once calibrated, the modeled general groundwater flow direction was illustrated using MODPATH, a particle -tracking post -processing program that works with MODFLOW (Pollock, 2016). The MODPATH analysis shows that the general groundwater flow direction is from the southern part of the Site to the northwest in both the Middle and Lower Aquifers as shown in Figure 8 and Figure 9. This correlated with the observed flow direction shown in the Annual Groundwater Monitoring and Corrective Action Status reports (ERM, 2012, 2013 and Geosyntec, 2014, 2015 and 2016). The groundwater elevation, flow direction, and mass balance comparisons show that the flow model is reasonably well calibrated and sufficient for the intended transport analysis. 5.2 Transport Model The modular transport model MT3DMS was used to simulate steady-state PCE concentrations in groundwater due to advection and hydrodynamic dispersion, and assuming no significant sorption or kinetic reaction pathways. Additionally, it was not necessary to significantly calibrate the transport model because modeled PCE concentrations based on the calibrated groundwater flow model approximately matched observed contours within an order of magnitude with source areas pre -defined as discussed in Section 4.2.1. Further, a CHA8439 12 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants relatively small global mass balance discrepancy was computed within MT3DMS of 1.4%, 1.4% and 1.5% for the three predictive scenarios described in Section 8 and is generally acceptable (Neville, 2006). Steady state transport model simulations were run with approximately 500,000 transport steps, roughly equivalent to 1000 years. CHA8439 13 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 6. MODEL UNCERTAINITY The groundwater model constructed, calibrated, and applied is an approximation of the Site groundwater system. It is based on a limited number of data points, and thus in a complex environment there are unavoidably f uncertainties. The groundwater model was constructed based on field -observations, which were then interpolated to approximate aquifer conditions across the model domain and assumed to be representative in between the measured points. Numerical groundwater flow models, therefore, are approximations of real world hydrogeological systems. Nevertheless, models are commonly used as a means of representing the available data on a specific groundwater system and performing groundwater remedial design. This section summarizes some of the uncertainties associated with groundwater -flow modelling process, the physical characterization and potential impacts of the uncertainty. The main limitations of the modelling approach include the following: • USGS MODFLOW Solution: Developed by the United States Geological Survey, the code uses a block -centred finite -difference scheme for saturated flow in an equivalent porous medium. It does not simulate unsaturated flow in the vadose zone or discrete fracture flow. Therefore, groundwater flow connections due to preferential pathways in the vadose zone cannot be simulated in this model, which can result in some uncertainty about migration of contaminants from the unsaturated portion of the Upper Clay layer at the Site. • Finite Discretization: Mathematically, the solution of the groundwater flow equations is limited to the calculation of hydraulic head and groundwater flow at a finite number of points, which is defined by the number of cells in the model. Greater precision is achieved when the number of cells is greater but, must be balanced by computational resource limitations. To model the Site facility and surrounding area sufficiently, the cell sizes used to represent the facility were telescoped to 50 feet by 50 feet at the Site. This is adequate for average flow across a moderate region, but on a small scale (e.g., drawdown in pumping wells) there would be some uncertainty associated with the results. • Steady -State Solution: A simplifying assumption that is commonly made in groundwater flow modelling is to represent the system using a steady-state simulation approach. In reality, groundwater systems are continuously changing; however, since the systems overall respond at relatively slow rates, a steady-state approximation is generally reasonable and provides satisfactory understanding. This assumption, however, may result in differences between the simulated and observed conditions at any one time. An example of this type of limitation in this model is that the pumping rates used are average rates for March, 2015; however, WRW-11L CHA8439 14 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants was not pumped continuously due to maintenance issues in August, 2016 and; therefore, the simulated flow and capture zones may vary. • Transport Simulation: Transport simulations require certain assumptions in defining the source (e.g., soil mass to aqueous concentrations) and subsequent transport mechanism. It is assumed that no significant sorption, retardation, reaction or degradation of the contaminant occurs along the primary groundwater flow path. Not assuming any major contaminant retardation may be a conservative assumption and is likely to over -predict contaminant transport. Additionally, the transport model simulates PCE concentrations assuming all pumping wells to be shut off. However, a flow or transport dataset under non -pumping conditions was not available at the time of this model creation to calibrate to. Variations in simulated vs. observed non - pumping groundwater levels may induce errors in model predictions. Additionally, the model has assumed that existing dissolved groundwater CVOCs are not present at the start of the simulation. Another limitation to the precision of the model simulations and predictions is the uncertainty in the physical characterization of the region. The groundwater model was constructed based on field -observed parameters, which were then interpolated to approximate aquifer conditions across the model domain and assumed to be representative in between the measured points. Any limitations and errors in collecting the field data would be extended, via the derived model parameters, in the numerical simulations. Specifically, the parameters that have been interpolated and therefore subject to uncertainty are: • Lithostratigraphic interpretation from borehole logs: The lithologic model integrated a total of 110 previous soil boring logs, well construction logs, membrane interface probe and hydraulic profiling tool logs from the study area to develop a 3-D lithologic model. Borehole logs used to construct the model lithostratigraphic layers include historic logs that were recorded by different field geologists and inherently include a certain amount of uncertainty due to collection procedures and subjective opinions of the various people who recorded the logs. • Hydraulic conductivity: The horizontal hydraulic conductivity parameter was measured in select wells using field tests, as shown in Table 3 and described in Section 4.1.2. A certain degree of variation (up to one or even two orders of magnitude) can result depending on the methods used to interpret the tests. Historical aquifer testing data was not available at the time of model creation and a review of reported hydraulic conductivity values could not be performed. Vertical hydraulic conductivities have not been reported at the Site. In addition, hydraulic conductivity is generally associated with a lithology. Each lithology can have a range of potential hydraulic conductivity values, and vary across small distances, whereas the model approach uses a representative value for a unit. For example, hydrogeologic properties for the Paleochannel layer have not been reported CHA8439 15 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants and were assumed to be morphologically and hydraulically similar to the Upper Clay layer based on review of historic boring log. • Boundary conditions: The constant head boundary conditions used in the model are based on DEM generated using LiDAR data at a specific time. These simplifying assumptions overlook the natural seasonal variability of water levels, and result in uncertainty regarding local hydraulic controls on hydraulic heads. Recharge values used in the model were obtained from a range of estimates made at the regional scale, and modified during calibration within the estimated range. Please note that this list is not comprehensive but, discusses the major model uncertainties that warrant consideration. The model calibration was conducted for the sole purpose of the intended objectives stated in Section 1. Therefore, the primary importance of calibration results was placed on the flow features salient to the simulation of groundwater flow within the vicinity of the Site where the contaminant source and plume have been observed. The validity and applicability of the model for purposes other than the stated objectives must be independently evaluated based on the professional judgment of the model user. Although models are simplifications of the natural system, this approximation does not negate their use as tools to help understand and manage natural systems; it is necessary, however, to recognize the limitations of such tools when interpreting model results. CHA8439 16 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 7. PREDICTIVE SIMULATIONS After the model was calibrated and verified, simulations were performed to predict the potential outcomes of three possible IM source remedy scenarios at AOI-1 and AOI-2. Each of the three scenarios described below are run to steady state assuming all pumping wells to be shut off. • Scenario 1: No source treatment — under this scenario, source mass in both AOIs is defined as described in Section 2.4 at the initial timestep with no reduction in source mass assumed. • Scenario 2: 90% PCE mass reduction within the 100 mg/kg contoured interval — under this scenario, average source mass concentrations in both AOIs are reduced by 90% at the initial timestep, simulating source remedy. No treatment has been assumed for the contoured interval greater than 10 mg/kg, but less than 100 mg/kg. • Scenario 3: 99% PCE mass reduction within the 100 mg/kg contoured interval — under this scenario, average source mass concentrations in both AOIs are reduced by 90% at the initial timestep, simulating source remedy. No treatment has been assumed for the contoured interval greater than 10 mg/kg, but less than 100 mg/kg. Results of predicted steady state dissolved groundwater PCE concentrations in the Middle and Lower Aquifers are presented as follows: • Figure 10A — • Figure 10B — • Figure l0C — • Figure 11A — • Figure 11B — • Figure 11C — Scenario 1, middle aquifer Scenario 2, middle aquifer Scenario 3, middle aquifer Scenario 1, lower aquifer Scenario 2, lower aquifer Scenario 3, lower aquifer Predicted steady state dissolved groundwater PCE concentrations in the Middle and Lower Aquifers are contoured to non -Site -specific default NCDEQ and United States Environmental Protection Agency (USEPA) screening values. These screening values are intended to only provide a basis for establishing on -Site target remedial goals for the IM remedy and do not represent Site -specific screening values. Figures 10[A, B, C] and 11 [A, B, C] present the following contoured intervals for each predicted scenario, as follows: • The Title 15A North Carolina Administrative Code (NCAC) 02L (NC 2L) groundwater standard for PCE of 0.7 µg/L. • The Title 15A NCAC 02B surface water (NC 2B) standard for human health and consumption of organisms (for Class C surface waters) for PCE is 3.3 µg/L (note: the standard for freshwater aquatic life is 120 µg/L). CHA8439 17 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants • The USEPA residential tapwater regional screening level (RSL), using a cancer endpoint with a target risk of 10-6 for PCE is 11 lag/L. It is also noted that the NCDEQ Division of Waste Management (DWM) default Residential VI Screening concentration for PCE is 11.5 µg/L. • The non -cancer endpoint for PCE with a target hazard of 1 is calculated to be 41 µg/L utilizing the May 2016 Vapor Intrusion Screening Level Calculator (VISL) for an assumed groundwater temperature of 17°C. Scenario 1 (Figures 10A and 11A) — Under a no source treatment scenario, simulated dissolved groundwater PCE concentrations in the Middle and Lower Aquifers may exceed the NC 2L PCE standard of 0.7 µg/L both on -property and off -property. The area of groundwater plume that exceeds the NC 2L PCE standard within the Lower Aquifer is approximately 15% greater than the area of plume that exceeds the NC 2L PCE standard within the Middle Aquifer. Without any source treatment, the nearest potential downgradient surface water receptor, Belmont Lake (located approximately 0.15 miles down gradient of the northwest property boundary of the Site) may be impacted by an exceedance above the NC 2B surface water standard of 3.3 µg/L under non -pumping conditions. Although no water supply wells have been identified within impacted areas of the plume, the RSL of 11 µg/L may be exceeded both on -property and off -property. The NCDEQ Residential VI Screening concentration for PCE of 11.5 µg/L and calculated VISL of 41 µg/L may also be exceeded both on -property and off -property. Scenario 2 (Figures 10B and 11B) — Under a 90% PCE mass reduction within the 100 mg/kg contoured volume, the area of groundwater plume that exceeds the NC 2L PCE standard of 0.7 µg/L both on -property and off -property in both aquifers is notably lower (approximately 27% and 24% lower in the Middle and Lower Aquifers) than without any source treatment (scenario 1). Similar to scenario 1, Belmont Lake may be impacted by exceedances to the NC 2B surface water standard of 3.3 µg/L because the plume edge extends into the lake in the Middle and Lower Aquifers. This estimate is conservative in that it does not account for any groundwater to surface water dilution. Similar to Scenario 1, the tap water RSL of 11 µg/L may be exceeded both on -property and off -property but, no water supply wells have been located within the footprint of the plume. NCDEQ Residential VI Screening concentration for PCE of 11.5 µg/L and VISL of 41 µg/L may also be exceeded both on - property and off -property and further evaluation of the VI pathway may be needed after IM remedy is implemented. Scenario 3 (Figures 10C and 11C) — Similar to scenarios 1 and 2, under a 99% PCE mass reduction within the 100 mg/kg contoured volume, the area of groundwater plume that exceeds the NC 2L PCE standard of 0.7 µg/L both on -property and off -property is significantly lower (approximately 44% and 38% lower in the Middle and Lower Aquifers) than without any source treatment (scenario 1). Under scenario 3, the edge of the plume is CHA8439 18 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants further away from Belmont Lake as compared to scenarios 1 and 2 and would likely not result in an exceedance of the NC 2B surface water standard of 3.3 µg/L if groundwater to surface water dilution is considered. The tapwater RSL of 11 µg/L is likely to be exceeded both on -property and off -property but, no water supply wells have been located within the area of the plume. In the Middle Aquifer (closest to the surface), the calculated VISL of 41 µg/L and NCDEQ Residential VI Screening concentration for PCE of 11.5 µg/L appear to be exceeded both on -property and off -property. On property, VI would be addressed by continued operation of the SSDS, if needed, and further evaluation of the off -Site VI pathway may be necessary following implementation of the IM remedy. CHA8439 19 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 8. CONCLUSIONS A six layer, steady-state groundwater flow and transport model was constructed using MODFLOW and MT3DMS for the Former Schlage Lock Facility in Rocky Mount, NC to support the design of interim remedial measures. The model was calibrated to match historical groundwater elevations and flow direction. Predictive simulations were performed to predict the potential outcomes of three possible IM source remedy scenarios at AOI-1 and AOI-2, assuming all pumping wells to be shut off. The three scenarios simulated to help guide the establishment of IM target remedial goals were: • Scenario 1: No source treatment • Scenario 2: 90% PCE mass reduction within the 100 mg/kg contoured interval • Scenario 3: 99% PCE mass reduction within the 100 mg/kg contoured interval While recognizing the model uncertainties discussed in this report, Geosyntec notes the following conclusions based on available Site data and modeling results: • 90% or 99% PCE mass reduction within the 100 mg/kg contoured interval of source areas AOI-1 and AOI-2 (scenarios 2 and 3) significantly decreases the area of dissolved groundwater PCE plume in the Middle and Lower Aquifers that may exceed the NCAC 2L groundwater PCE standard of 0.7 µg/L as compared to no source treatment. • Without any source treatment (scenario 1), the nearest potential downgradient surface water receptor, Belmont Lake (located approximately 0.15 miles down gradient of the northeast property boundary of the Site) may be impacted through exceedances above the NCAC 02B surface water PCE standard for human health and consumption of organisms (for Class C surface waters) of 3.3 µg/L. A 99% PCE mass reduction within the 100 mg/kg contoured interval (scenario 3) predicts that it is not likely to cause an exceedance of PCE above NCAC 02B standard at Belmont Lake, if groundwater to surface water dilution is considered. • Although no water supply wells have been identified within impacted areas of the plume, the USEPA residential tapwater regional screening level for PCE of 11 µg/L may be exceeded both on -property and off -property in all three scenarios. • NCDEQ residential VI screening concentration for PCE of 11.5 µg/L and calculated vapor intrusion screening level of 41 µg/L may be exceeded both on -property and off -property in all scenarios. On -property VI is controlled by an active SSDS. Further evaluation of the VI pathway may be necessary if off -property concentrations exceed this default value in groundwater. The applicability of the model for purposes other than the stated objectives in this study must be independently evaluated based on the professional judgment of the model user. CHA8439 20 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants 9. REFERENCES Butler, J.J. and Healy, J. M., "Relationship between pumping -test and slug -test parameters: Scale effect or Artifact?", 1998. Capsule Environmental Engineering Inc., "Groundwater Remediation Report", 1991 ERM, "2012 Annual Groundwater Monitoring and Corrective Action Status Report", January 2013 ERM, "2013 Annual Groundwater Monitoring and Corrective Action Status Report", January 2014. Ford, C. R. and Vose, J. M., "Eastern Hemlock Transpiration: Patterns, Controls, and Implications for its decline in Southern Appalachian Forests", In: Second interagency conference on research in the watersheds, 16-18 May 2006. USDA forest service southern research station, Coweeta hydrologic laboratory, pp 181-187 2006 Geosyntec, "2014 Annual Groundwater Monitoring and Corrective Action Status Report", January 2015. Geosyntec, "2015 Annual Groundwater Monitoring and Corrective Action Status Report", January 2016. Geosyntec, "2016 Annual Groundwater Monitoring and Corrective Action Status Report", January 2017. Geosyntec, "Source Focused Characterization Work Plan", December 2016. Geosyntec, "Interim Measures Work Plan", June 2017. Heath, R.C, "Ground -Water Recharge in North Carolina", 1994 Mehl, S.W. and Hill, M.C., "Grid -size Dependence of Cauchy Boundary Conditions used to Simulate Stream -Aquifer Interactions", Advances in Water Resources. Volume 33, Issue 4, Pages 430-442, 2010 NCDEQ, "Technical Guidance for Risk -Based Environmental Remediation of Sites", 2017. Neville, C. J., "Interpreting the MT3D Mass Budget", S. S. Papadopulos & Associates, Inc., 2006 CHA8439 21 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants Niswonger et al, MODFLOW-NWT, "A Newtonian Formulation for MODFLOW-2005", U.S. Geological Survey Techniques and Methods 6-A37, 2011 Pollock, D.W., "User guide for MODPATH Version 7 -- A particle -tracking model for MODFLOW", U.S. Geological Survey Open -File Report 2016-1086, 35 p., http://dx.doi.org/10.3133/ofr20161086, 2016 Risk Science Program, "Intermedia Transfer Factors for Contaminants Found at Hazardous Waste Sites", 1994. Wenck Associates Inc., "Groundwater Remediation Report Addendum III", 1994 Zheng, C., and Wang, P., 1999: MT3DMS, A Modular Three -Dimensional Multi- species Transport Model for Simulation of Advection, Dispersion, and Chemical Reactions of Contaminants in Groundwater Systems: Documentation and User's Guide. U. S. Army Corps of Engineers, U. S. Army Engineer Research and Development Center, Vicksburg, Mississippi, SERDP-99-1. CHA8439 22 Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 DRAFT Geosyntec° consultants TABLES CHA8437 Table 1 Summary of Monitoring and Recovery Well Construction Details Former Schalge Lock Facility Rocky Mount, North Carolina Well ID Aquifer Zone Location - North Carolina NAD 83 Elevation - NGVD 29 (ft) MI Elevation - NAVD 88 (ft) Well Bore Diameter Well Casing Northing (X) Milt Easting (Y) Ground Surface Top of Inner Casing Top of Inner Casing Well Bottom Screen Top Screen Bottom i MW-08 829,896 2,364,171 130.9 132.6 131.6 108.9 124.1 108.9 MW-16D M 830,710 2,364,322 121.95 123.1 122.0 97.4 102.6 97.4 6" 2" MW-22 M 829,982 2,364,515 131.69 131.2 130.1 102.1 122.3 102.1 8" 2" MW-23 M 830,128 2,364,547 131.69 131.2 130.2 97.1 122.3 97.1 8" 2" MW-28 L 830,793 2,364,097 116.3 118.5 117.5 91.8 107.7 91.8 8" 2" MW-30 L 830,073 2,364,823 130.76 131.9 130.8 88.2 98.4 88.2 8" 2" MW-35 L 830,022 2,364,972 128.24 130.3 129.2 81.2 91.2 81.2 7" 2" MW-39DD L 829,623 2,364,422 129 128.7 127.7 78.0 88.0 78.0 8" 2" MW-41DDR L 830,161 2,364,226 130.91 132.9 131.8 81.9 91.9 81.9 8" 2" MW-42S U 829,468 2,364,207 129.1 128.6 127.6 107.1 112.1 107.1 8" 2" MW-43D L 831,344 2,363,733 101.6 103.6 102.5 84.6 89.6 84.6 6" 2" MW-44S M 830,877 2,364,529 124.7 127.5 126.5 100.7 105.7 100.7 6" 2" MW-441) L 830,882 2,364,524 125 127.8 126.7 85.0 90.0 85.0 6" 2" MW-46S M 829,949 2,364,313 129.3 129.2 128.2 100.8 105.8 100.8 6" 2" MW-46D L 829,953 2,364,314 129.3 129.4 128.3 80.3 85.3 80.3 6" 2" MW-48D L 830,715 2,364,613 122.8 125.2 124.1 83.8 88.8 83.8 6" 2" MW-50S M 831,155 2,364,435 125.9 128.0 127.0 104.9 109.9 104.9 10" 2" MW-51 M 831,270 2,363,946 114.33 117.6 116.5 81.3 86.3 81.3 8" 2" MW-52 L 831,237 2,363,640 102.92 105.4 104.4 87.4 92.4 87.4 8" 2" MW-54S M 830,024 2,364,420 131.85 131.6 130.5 96.8 101.8 96.8 8" 2" MW-56S M 829,816 2,364,299 129.33 129.3 128.3 96.3 101.3 96.3 8" 2" MW-61S M 830,813 2,363,876 109.11 112.2 111.2 96.1 101.1 96.1 8" 2" MW-69S M 829,809 2,365,375 127.43 129.4 128.3 86.4 91.4 86.4 6" 2" MW-701) L 830,002 2,364,197 130.77 130.5 129.5 81.7 86.7 81.7 10" 2" MW-73D L 830,317 2,364,242 130.74 133.9 132.9 82.7 87.7 82.7 8" 2" PZ-4 M 829,984 2,364,261 128.97 128.8 127.8 102.8 107.8 102.8 1.75" 1" PZ-5 L 830,370 2,364,283 130.04 129.9 128.8 86.8 91.8 86.8 1.75" 1" Page 1 of 3 Geosyntec Consultants ofNC, PC Table 1 Summary of Monitoring and Recovery Well Construction Details Former Schalge Lock Facility Rocky Mount, North Carolina Well ID All. Aquifer Zone Location - North Carolina NAD 83 Elevation - NGVD 29 (ft) Elevation - NAVD 88 (ft) Well Bore Diameter Well Casing Northing (X) MOD Easting (Y) Ground Surface Top of Inner Casing Top of Inner Casing Well Bottom Screen Top Screen Bottom PZ-6 L 830,235 2,364,257 130.84 130.6 129.6 84.6 89.6 84.6 1.75" 1" PZ-7 L 830,133 2,364,193 130.92 130.8 129.8 85.8 88.8 85.8 1.75" 1" PZ-8 L 830,061 2,364,199 131.04 131.0 129.9 84.9 87.9 84.9 1.75" 1" PZ-9 L 830,413 2,364,269 129.79 129.7 128.7 82.7 85.7 82.7 1.75" 1" RW-2 M 829,834 2,364,463 130.41 132.7 131.7 98.2 118.2 98.2 8" 6" RW-7 M 829,878 2,364,474 131.69 131.2 130.2 94.2 114.2 94.2 8" 6" WRW-2M M 831,150 2,363,872 106.7 108.5 107.5 91.0 96.0 91.0 12" 6" WRW-3M M 831,011 2,364,071 112.4 113.4 112.4 95.4 100.4 95.4 12" 6" WRW-4M M 830,883 2,364,375 119 121.2 120.1 104.1 109.1 104.1 12" 6" WRW-5M M 830,659 2,364,468 123.2 125.3 124.2 101.2 106.2 101.2 12" 6" WRW-6M M 830,600 2,364,652 124.1 125.9 124.9 101.4 106.4 101.4 12" 6" WRW-7M M 829,846 2,364,395 130.83 130.5 129.4 95.4 105.4 95.4 12" 6" WRW-8M M 829,728 2,364,782 128.9 131.6 130.6 98.6 103.6 98.6 12" 6" WRW-9M M 829,714 2,364,913 129.55 131.3 130.3 94.3 104.3 94.3 12" 6" WRW-10M M 830,076 2,364,844 129.37 131.3 130.3 95.3 105.3 95.3 12" 6" WRW-3L L 831,005 2,364,077 112.4 114.8 113.7 87.2 92.2 87.2 10" 6" WRW-5L L 830,657 2,364,474 123.2 125.0 124.0 90.0 95.0 90.0 10" 6" WRW-6L L 830,599 2,364,658 124.1 126.5 125.5 87.5 97.5 87.5 8" 6" WRW-8L L 829,753 2,364,800 130.33 132.3 131.2 83.2 93.2 83.2 12" 6" WRW-10L L 830,084 2,364,852 128.69 130.8 129.7 85.7 95.7 85.7 12" 6" WRW-11L L 829,989 2,364,259 128.95 127.8 126.8 80.8 90.8 80.8 12" 6" WRW-12L L 830,233 2,364,265 130.75 129.9 128.9 80.9 90.9 80.9 12" 6" WRW-13L L 830,381 2,364,292 129.92 129.1 128.1 82.1 92.1 82.1 12" 6" WRW-14L L 830,121 2,364,245 130.53 129.4 128.4 80.4 90.4 80.4 12" 6" Page 2 of 3 Geosyntec Consultants ofNC, PC Table 1 Summary of Monitoring and Recovery Well Construction Details Former Schalge Lock Facility Rocky Mount, North Carolina Notes: (1) Well survey data (Northing, Easting and Elevation) provided by Chamblee & Strickland and reported in Appendix A of 2016 Annual Groundwater Monitoring Reports. Locations are reported in the North American Datum of 1983 (NAD-83) and elevations are reported in National Geodetic Vertical Datum of 1929 (NGVD-29). (2) For monitoring wells that are screened across multiple geologic units, 'aquifer zone' reflect observations in the most representative geologic unit based on a review of well construction and lithologic logs. (3) Abbreviations: U - Upper Aquifer M - Middle Aquifer L - Lower Aquifer MW - Monitoring Well NAD 83 - North American Datum of 1983 NGVD-29 - National Geodetic Vertical Datum of 1929 NAVD-88 - North American Vertical Datum of 1988 RW/WRW - Recovery Well Page 3 of 3 Geosyntec Consultants of NC, PC Table 2 Summary of Recovery Well Pumping Rates Former Schalge Lock Facility Rocky Mount, North Carolina Well ID Location - North Carolina NAD 83 Elevation - NAVD 88 (ft) Well Bore Diameter Well CasingRate Average Pump March-2015 (GPM) Aquifer Zone Northing (X) Easting (Y) Top of Inner Casing RW-2 829,834 2,364,463 131.7 8" 6" -0.7 M RW-7 829,878 2,364,474 130.2 8" 6" -2.1 M WRW-2M* 831,150 2,363,872 107.5 12" 6" - M WRW-3M* 831,011 2,364,071 112.4 12" 6" - M WRW-4M 830,883 2,364,375 120.1 12" 6" -5.4 M WRW-5M 830,659 2,364,468 124.2 12" 6" -4.7 M WRW-6M 830,600 2,364,652 124.9 12" 6" -5.6 M WRW-7M 829,846 2,364,395 129.4 12" 6" -0.7 M WRW-8M 829,728 2,364,782 130.6 12" 6" -0.4 M WRW-9M 829,714 2,364,913 130.3 12" 6" -0.1 M WRW-10M 830,076 2,364,844 130.3 12" 6" -12.4 M WRW-3L* 831,005 2,364,077 113.7 10" 6" - L WRW-5L 830,657 2,364,474 124.0 10" 6" -6.2 L WRW-6L 830,599 2,364,658 125.5 8" 6" -8.5 L WRW-8L* 829,753 2,364,800 131.2 12" 6" - L WRW-10L* 830,084 2,364,852 129.7 12" 6" - L WRW-11L 829,989 2,364,259 126.8 12" 6" -3.1 L WRW-12L 830,233 2,364,265 128.9 12" 6" -2.1 L WRW-13L 830,381 2,364,292 128.1 12" 6" -2.7 L WRW-14L 830,121 2,364,245 128.4 12" 6" -2.4 L Page 1 of 2 Geosyntec Consultants of NC, PC Table 2 Summary of Recovery Well Pumping Rates Former Schalge Lock Facility Rocky Mount, North Carolina Notes: (1) Well survey data (Northing, Easting and Elevation) provided by Chamblee & Strickland and reported in Appendix A of 2016 Annual Groundwater Monitoring Reports. Locations are reported in the North American Datum of 1983 (NAD-83) and elevations are reported in National Geodetic Vertical Datum of 1929 (NGVD-29). (2) Average pump rate in March, 2015 calculated from weekly monitoring data (3) * WRW-2M and WRW-3M shutdown on 6/28/2007 during bioremediation. WRW-3L deactivated prior to 1992; WRW-8L deactivated 2003; WRW-10L deactivated 1/2007 (4) Abbreviations: U - Upper Aquifer NAD 83 - North American Datum of 1983 M - Middle Aquifer NGVD-29 - National Geodetic Vertical Datum of 1929 L - Lower Aquifer NAVD-88 - North American Vertical Datum of 1988 MW - Monitoring Well RW/WRW - Recovery Well Page 2 of 2 Geosyntec Consultants of NC, PC Table 3 Summary of Measured Aquifer Parameters Former Schalge Lock Facility Rocky Mount, North Carolina Units 1 Model Layer i Aquifer Test Hydraulic Conductivity (Data source la) (feet/day) [min -max] Arithmetic Mean Hydraulic Conductivity (Data source la) (feet/day) Geometric Mean Hydraulic Conductivity (Data source la) (feet/day) Arithmetic Mean Hydraulic Conductivity (Data source lb) (feet/day) Upper Clay 2 Slug 0.07 - 0.09 - - 0.07 Middle Aquifer 3 Slug 0.05 - 4.0 1.7 1.17 0.61 Pump 4.3 - 7.5 5.9 5.68 Lower Aquifer 5 Slug 0.7 - 41.7 14.9 9.4 28.67 Pump 4.3 - 14.9 9.7 8.9 Lower Clay 6 Slug 0.09 - - 0.09 Notes: (1) Data sources: (a) Wenck Associates Inc., "Groundwater Remediation Report Addendum III", 1994 (b) ERM, "2013 Annual Groundwater Monitoring and Corrective Action Status Report", 2013 (2) Groundwater Remediation Report Addendum III summarizes aquifer tests done prior to this study including, tests done for the design of the groundwater remediation sysmte in Feburary 1991. (3) Arithmetic and Geometric means for Upperand Lower Clay units not reported because only one data point reported. Page 1 of 1 Geosyntec Consultants of NC, PC Table 4 Summary of Modeled Hydrogeologic Parameters Former Schalge Lock Facility Rocky Mount, North Carolina Units Model Layer Horizontal Hydraulic Conductivity, Kt, (feet/day) Vertical Hydraulic Conductivity, Kv (feet/day) Storativity, SS Specific Yield, Sy (1/foot) Paleochannel 1 0.02 0.01 0.2 1.00E-05 Upper Clay 2 0.02 0.01 Middle Aquifer 3 3 0.3 Middle Confining Clay 4 0.07 0.02 Interconnected Zone 3 and 4 8 2 Lower Aquifer 5 120 40 Lower Clay 6 0.07 0.02 Notes: (1) Model Layer refers to the six groundwater model layers described in Section 4.1.1 of the report. (2) The interconnected zone represents an area to the southeast portion of the model domain that is assumed to be connected between the middle and lower aquifers. Page 1 of 1 Geosyntec Consultants of NC, PC Table 5 Representative Hydraulic Conductivity for Unconsolidated Sedimentary Material Former Schalge Lock Facility Rocky Mount, North Carolina Units li Horizontal Hydraulic Conductivity, Kt, (meters/second) Horizontal Hydraulic Conductivity, Kt, (feet/day) Gravel 3 x 10-4 to 3 x 10-2 85 to 8500 Coarse sand 9 x 10-7 to 6 x 10-3 0.3 to 1700 Medium sand 9 x 10-' to 5 x 10-4 0.3 to 142 Fine sand 2 x 10-7 to 2 x 10-4 0.05 to 57 Silt, loess 1 X 10_g to 2 X 10.5 2.8x10-4 to 5.7 Till 1x 10-12 to 2x10-6 2.8x10-7 to 0.57 Clay 1X10 ii to 4.7X10_9 2.8x10-6to 1x10-3 Unweathered marine clay 8X10 13 to 2X10_9 2.3x10-7to 6x10-3 Notes: (1) Literature values obtained from "Domenico, P.A. and F.W. Schwartz, 1990. Physical and Chemical Hydrogeology , John Wiley & Sons, New York, 824 Page 1 of 1 Geosyntec Consultants of NC, PC Table 6 Tetrachloroethene mass assignment in impact zones and virtual remediation Former Schalge Lock Facility Rocky Mount, North Carolina PCE Threshold Geologic Unit Total PCE Mass PCE mass proportions PCE mass in each unit Impacted Soil Volume Average Soil PCE Concentrations Average Groundwater PCE Concentrations (lbs) (%) (lbs) (cy) i (mg/kg) a Scenario 1 - No Source Remedy (mg/1) Scenario 2 - 90% PCE > 100 mg/kg removed (mg/1) Scenario 3 - 99% PCE > 100 mg/kg removed (mg/1) PCE >100 mg/kg UC 11,000 80% 8,806 3,752 753 75.32 7.53 0.75 MA 7% 765 335 733 73.27 7.33 0.73 MC 13% 1,413 602 753 6.38 0.64 0.06 LA 0.1% 16 18 292 29.17 2.92 0.29 PCE >10 mg/kg and < 100 mg/kg UC 1,300 65% 845 10,508 26 2.58 2.58 2.58 MA 20% 263 2,505 34 3.37 3.37 3.37 MC 13% 170 1,898 29 0.24 0.24 0.24 LA 2% 22 417 17 1.72 1.72 1.72 Notes: (1) Total Tetrachloroethene mass calculated as the sum of EVS-modeled volumes of impacted soil and saturated aquifer matrix and DNAPL estimate calculations. (2) PCE mass proportions in each geologic layer calculated from EVS model results presented in Table 6. (3) Impacted soil volume estimates obtained from EVS model incorporating results from 2014 and 2017 source area investigations. (4) Average soil concentrations calculated as ratio of PCE mass in each geologic layer and corresponding impacted soil volume (5) Abbreviations: UC - Upper Clay Layer MC - Middle Clay Layer MA - Middle Aquifer lbs - pounds LA - Lower Aquifer cy - cubic yards PCE - Tetrachloroethene mg/1 - milligrams per liter Page 1 of 1 Geosyntec Consultants of NC, PC Table 7 Summary of FOC and Resistivity Results in Soil and Aquifer Matrix Samples Former Schlage Lock Facility Rocky Mount, NC Geologic Unit Borehole ID Date Analyzed Sampl' Depth FOC Resistivity Minimum Average Maximum (ft bgs) % Ohm-m % % Upper Clay SS4 1/24/2017 16-16.5 <0.042 <40,000 - - - SS9 1/26/2017 10-10.5 <0.042 <40,000 SS23 2/1/2017 12.5-13 <0.042 <40,000 Middle Aquifer SS4 1/24/2017 24-24.5 <0.042 <40,000 - - - SS5 1/24/2017 26-26.5 <0.042 <40,000 SS9 1/26/2017 32-23.5 <0.042 <40,000 Middle Confining Unit SS4 1/24/2017 27.5-28 0.59 <40,000 0.59 0.79 0.99 SS4 1/24/2017 39.5-40 0.78 <40,000 SS9 1/26/2017 28-28.5 <0.042 <40,000 SS10 1/26/2017 34-34.5 0.99 <40,000 Notes: (1) Concentrations in Bold (e.g., 8.1) indicate detected concentrations. (2) Minimum, Average and Maximum values are presented only for detected values. (3) Abbreviations: FOC - Fraction Organic Carbon ft bgs - feet below ground surface Page 1 of 1 Geosyntec Consultants of NC, PC Table 8 Measured/Calibrated Groundwater Elevations and Residuals Former Schalge Lock Facility Rocky Mount, North Carolina Well ID Location - North Carolina NAD 83 Top of Casing Elevation Ground Water Elevation 3/31/2015 (ft NAVD-88) Ground Water Elevation 3/24/2016 (ft NAVD-88) Ground Water Elevation 3/29/2017 (ft NAVD-88) Calibrated Observed Residual Observed Residual Observed Residual • P. Northing (X) Easting (Y) (ft NAVD-88) MW-08 829,896 2,364,171 131.6 117.6 117.6 0.1 116.5 1.1 114.7 2.9 MW-16D 830,710 2,364,322 122.0 111.0 114.8 -3.8 114.5 -3.5 113.0 -2.0 MW-22 829,982 2,364,515 130.1 113.4 112.5 1.0 112.3 1.1 111.6 1.9 MW-23 830,128 2,364,547 130.2 113.1 112.1 1.0 112.0 1.2 111.0 2.2 MW-28 830,793 2,364,097 117.5 109.3 112.5 -3.2 111.8 -2.5 109.6 -0.3 MW-30 830,073 2,364,823 130.8 113.5 110.7 2.8 110.8 2.7 110.5 2.9 MW-35 830,022 2,364,972 129.2 113.9 110.8 3.1 110.9 3.0 110.7 3.2 MW-39DD 829,623 2,364,422 127.7 113.8 112.4 1.4 112.5 1.3 112.2 1.6 MW-41DDR 830,161 2,364,226 131.8 111.6 110.8 0.8 111.0 0.5 110.9 0.7 MW-42S 829,468 2,364,207 127.6 119.5 120.3 -0.7 119.9 -0.4 118.9 0.6 MW-43D 831,344 2,363,733 102.5 100.5 100.6 -0.1 100.4 0.1 100.0 0.5 MW-44S 830,877 2,364,529 126.5 110.9 108.0 2.9 112.3 -1.4 109.4 1.6 MW-44D 830,882 2,364,524 126.7 111.7 112.6 -0.9 107.8 3.9 106.6 5.0 MW-46S 829,949 2,364,313 128.2 112.5 111.3 1.3 114.8 -2.3 113.5 -1.0 MW-46D 829,953 2,364,314 128.3 113.0 115.3 -2.3 111.5 1.5 111.3 1.7 MW-48D 830,715 2,364,613 124.1 111.7 106.9 4.7 107.3 4.4 106.9 4.8 MW-50S 831,155 2,364,435 127.0 110.6 111.2 -0.6 111.2 -0.6 109.9 0.7 MW-51 831,270 2,363,946 116.5 106.1 104.4 1.8 103.3 2.8 102.0 4.1 MW-52 831,237 2,363,640 104.4 101.0 100.5 0.5 99.7 1.2 99.9 1.1 MW-54S 830,024 2,364,420 130.5 113.2 113.7 -0.5 113.4 -0.3 112.5 0.7 MW-56S 829,816 2,364,299 128.3 113.1 115.4 -2.3 115.0 -1.9 113.7 -0.7 MW-61S 830,813 2,363,876 111.2 105.5 106.8 -1.3 105.7 -0.2 103.6 1.8 MW-69S 829,809 2,365,375 128.3 114.8 112.3 2.5 112.3 2.5 111.6 3.2 MW-70D 830,002 2,364,197 129.5 112.1 111.0 1.1 111.3 0.8 111.2 0.9 MW-73D 830,317 2,364,242 132.9 111.2 110.6 0.6 110.8 0.4 110.7 0.5 PZ-4 829,984 2,364,261 127.8 112.8 115.6 -2.9 115.1 -2.3 113.8 -1.0 PZ-5 830,370 2,364,283 128.8 111.4 110.5 0.9 - - 110.6 0.8 PZ-6 830,235 2,364,257 129.6 111.6 110.7 0.9 110.9 0.7 110.9 0.7 PZ-7 830,133 2,364,193 129.8 111.6 110.8 0.7 111.1 0.5 110.9 0.6 PZ-8 830,061 2,364,199 129.9 111.9 111.0 1.0 111.2 0.7 111.0 0.9 PZ-9 830,413 2,364,269 128.7 111.3 110.6 0.7 110.8 0.6 110.7 0.7 Minimum Observed Elevation (ft) 100.5 99.7 99.9 Maximum Observed Elevation (ft) 120.3 119.9 118.9 Range of Observed Values (ft) 19.8 20.1 19.0 Root Mean Squared Error 1.9 1.9 2.1 Normalized Root Mean Squared Error (%) 9.82% 9.42% 11.03% Page 1 of 2 Geosyntec Consultants ofNC, PC Table 8 Measured/Calibrated Groundwater Elevations and Residuals Former Schalge Lock Facility Rocky Mount, North Carolina Notes: (1) Well survey data (Northing, Easting and Elevation) provided by Chamblee & Strickland and reported in Appendix A of 2016 Annual Groundwater Monitoring Reports. Locations are reported in the North American Datum of 1983 (NAD-83) and elevations are reported in National Geodetic Vertical Datum of 1929 (NGVD-29). (2) Residuals calculated as the difference between modeled and observed groundwater elevations. (3) For each observed/calibrated dataset, the root mean square is calculated as the square root of the arithmetic mean of the squares of the residuals. (4) Normalized root mean square error is calculated as the ratio of the root mean square error and the range of observed heads expressed as a percentage. (5) Abbreviations: U - Upper Aquifer NAD 83 - North American Datum of 1983 M - Middle Aquifer NGVD-29 - National Geodetic Vertical Datum of 1929 L - Lower Aquifer NAVD-88 - North American Vertical Datum of 1988 MW - Monitoring Well RW/WRW - Recovery Well Page 2 of 2 Geosyntec Consultants ofNC, PC Groundwater Modeling Report Former Schlage Lock Facility, Rocky Mount, NC June 2017 Geosyntec° consultants FIGURES CHA8437 E. Legend G Sub -Slab Depressurization System Extraction Points • Upper Aquifer Monitoring Well • Middle Aquifer Monitoring Well • Middle/Lower Aquifer Monitoring Well 4 Lower Aquifer Monitoring Well • Yorktown Aquifer Monitoring Well Middle Aquifer Piezometer Lower Aquifer Piezometer • Recovery Well Aspen Investments Property Boundary Notes 1. Locations are approximate, based on figures by ERM. 2. Property boundary is from Nash County Website (28 March 2017). 3. Aerial imagery is from North Carolina OneMap (2013). \'`53S, 13L F 73D !r 54S- 5L 37D 6M 6L g ,. I R; V28' V26 / 1u 30� 70D ; 11L[ 22 r ; c ,V27 6D 11;e, v8 V23/VI4p- 25 $ ��/l�� „ V9V10 5�, 1 46S vsq^• V7 v ▪ 555,7,. V v2V2 v122 �' l� 7 V13 V75 l+ _ iV18 V5�, t V14 h > V19 56S : 7M v"10--v 2;63_.V4., V1s V1! ` '57S 1g 32� `�64D 8L 8M 3 33 65D 6 42D 42S 39DD ,395 68D 66D VA N Site Layout Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 1 Compass Creek Cs la j� �•t .. Legend Drain Boundary No Flow Boundary Aspen Investments Property Boundary Belmont Lake (Constant head boundary) Constant Head Boundary Notes: Basemap is 7.5-minute USGS Topographic Map downloaded from USGS - National Geospatial Technical Operations Center (NGTOC) Belmont Lake Beech Branch :, ♦/ -- ra :‘,N. N WM CAROLINA �i �� C/) - METAN COLL£G' �' _ rl 'I _�rJ - - d s _ �` } ! _ / 0,0.:r3 11 • r sf. •` - I:O [a - 'I 1��-�_ I� ~J �• r I1�J /.+✓ L •' I _ J � t 2,500 0 2,500 Feet Model Boundary Conditions Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 2 • ,1 • Y T: Legend Model Boundary Outline (Aspen Investments Property Boundary Model Grid Notes: Basemap is 7.5-minute USGS Topographic Map downloaded from USGS - National Geospatial Technical Operations Center (NGTOC Grri • 1 1 _ J I 1 f 1 , d } h d / /'r ^- U G5 o / 1 / t / • s i NORTH 7, ►-r I • 2,500 0 2,500 Feet Model Grid Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 3 tar Pcf 11111111111111111111111111111 ME MOEN ME MUM= R1 EN 1111 NM ME ME MEM ■ Legend Model Boundary Outline Aspen Investments Property Boundary ZONES Model Grid (Calibrated Kx=Ky=3 feet/c EL Interconnected Zone (Calibrated Kx=Ky=8 feet/c Notes: Basemap is 7.5-minute USGS Topographic Map downloaded from USGS - National Geospatial Technical Operations Center (NGTOC) MEI= ENE • Pi MEE loot, ,10,101,0101,01,1,01„„,1111 1111 iI 2,500 0 2,500 Feet Hydraulic Conductivity Zonation of Middle Aquifer and Middle Confining Layers Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 4 1110111111111111111111111111111111111 II II 1111111111 11111111111 ill OMEN Legend Model Boundary Outline Aspen Investments Property Boundary Recharge Zone 1 Recharge Zone 2 Recharge Zone 3 Notes: Basemap is 7.5-minute USGS Topographic Map downloaded from USGS - National Geospatial Technical Operations Center (NGTOC) [ill 1011110 HOH00010 11 101001000 000101 NOR 0 NH01010111 I 01 1010001 0101001 II 11111111111111111101111111111111111111111111111111111111111111111111111111111111111111111111111111111111 111111111 MEI .T gulp' :fie / N N. PTIII{ps�_ N :_C!m 'I „ 2,500 0 2,500 Feet Modeled Recharge Zones Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 5 1< E \GIS 2017\MXD\IM an narbor-01 \A:\Proir MW-55S PT-07 `RW-7 iHPT-10 MiHPT-11 LEGEND 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool 2014 Hand Augered Boring • Monitoring Well 10 mg/kg Tetrachloroethene 100 mg/kg Tetrachloroethene Notes: 1. Aerial imagery is from North Carolina OneMap (2013). 2. Property boundary is from Nash County Website (28 March 2017). 3. Plume delineation is from Earth Volumetric Studio (EVS) model. 4. mg/kg indicates milligrams per kilogram. MW-68D W-10 D PT-1 SS4 MiHPT-05 MW-66D .11100 ."; 40- ito 8D -04 HA-03 SS3 Horizontal Extent of 10 mg/kg and 100 mg/kg Tetrachloroethene Impacted Aquifer Matrix Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC' License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 6 122 117_4 112_8 108.2 103.6 99 MIN -OEM MW-42 ` tiro-42E ■ -08 M14-38DDIM Ml^1-35,'Ml�f MW- q-39DD hA1^1 35 (5 30/Ml,W-30 • 9SIM1^ •.9S M154SIM1I'-54S kJW`� VLYY- � VI- MW-46SIMW6S MW-56 SIM1N-56S M1^I-48D,MW-48D MIDI-46DrM1 ♦ MW 4D/MW-44D *PZ-7IP� MW-70DIMl^I-70D M1-73DIMW -46D PZ-WPZ-8 PZ 5'PZ 5 73D `Z-9I1:Z-9 , • . r W-41 DDRIMW-41 • I i 1N-503 • MW-23/MW-23 w-231Mw2 PZ-4PZ-4 MW- 4SSMVI-44S DDR Mbar 51 IMW-51 • WV- t. SIMV1-61S • V11-52IM1 •' 110 11^W- • • I IMW43D 99 103.5 Min.Residual: 0.062 (ft) at MW-081MW-08 Max.Residual: 4.74 (ft) at MW-48D/MW-48D Residual Mean: 0.35 (ft) Ads.Residual Mean: 1.56 (ft) Legend Monitoring wells screened in: • • Upper Aquifer Middle Aquifer Lower Aquifer Notes - Water level observed on 3/31/15 and elevation reported in feet NAVD88. 108.2 112.8 Observed Head [ft] 117.4 122 Standard Error of the Estimate: 0.35 (ft) Root Mean Squared: 1.94 (ft) Normalized RMS: 9.82 (%) Correlation Coefficient: 0,89 Measured and Calibrated Groundwater Elevations and Residuals Former Schlage Lock Facility 213 Red Iron Road, Rocky Mount. NC Geosyntec° Consultants of NC, PC CHARLOTTE NC JUNE 2017 Figure 7 104200 104200 104200 104848 041192 P,104845 m100694 -Q100692 100691 100677 100678 100680 100698 100697 100696 100695 100693 100676 100675 100674 100673 100672 100671 100668 100682 100663 100699 100700 100702 100703 100704 100705 100706 100707 100708 100709 100710 100711 100712 100713 egen. - Modeled Groundwater Contours (ft NAVD88) - Aspen Investments Property Boundary Property Parcel with ID `otes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. Reference datum for modeled groundwater contours is North American Vertical Datum of 1988. 041187 104435 041191 041190 017021 019708 300118 017086 108760 300119 -017389 034658 019230 017025 Modeled Groundwater Elevation Contours Middle Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE NC JUNE 2017 Figure 8 104200 104200 :2104845 100694 100692 100691 100677 100678 100680 100698 100697 100696 100695 100693 100676 100675 100674 100673 100672 100671 100668 100682 ;100663 104200 104848 100699 100700 100702 100703 100704 100705 100706 100707 100708 100709 100710 100711 100712 041184 Legend Aspen Investments Property Boundary - Modeled Groundwater Contours (ft NAVD88) - Aspen Investments Property Boundary Property Parcel with ID Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. Reference datum for modeled groundwater contours is North American Vertical Datum of 1988. 041192 104435 / 041191 041190 041189 041187 041186 041185 017021 301293 019708 300118 017086 108760 300119 034658 017389 108762 019230 034656 017025 Modeled Groundwater Elevation Contours Lower Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° Consults nts of NC, PC NC License No.: C-3500 CHARLOTTE NC JUNE 2017 Figure 9 Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. A 003218 Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Property Parcel with ID No remedy PCE > 100 mg/kg removed (41 ppb) No remedy PCE > 100 mg/kg removed (11 ppb) No remedy PCE > 100 mg/kg removed (3.3 ppb) No remedy PCE > 100 mg/kg removed (0.7 ppb) Aspen Investments Property Boundary PCE > 100 mg/kg footprint in Middle Aquifer PCE > 10 mg/kg footprint in Middle Aquifer Modeled Tetrachloroethene Isocontours in the Middle Aquifer After Source Remedy (No PCE Remedy Scenario) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consulta its of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 1OA 104200 • • Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Property Parcel with ID 90% remedy PCE > 100 mg/kg removed (41 ppb) 90% remedy PCE > 100 mg/kg removed (11 ppb) 90% remedy PCE > 100 mg/kg removed (3.3 ppb) 90% remedy PCE > 100 mg/kg removed (0.7 ppb) Aspen Investments Property Boundary PCE > 100 mg/kg footprint in Middle Aquifer PCE > 10 mg/kg footprint in Middle Aquifer Modeled Tetrachloroethene Isocontours in the Middle Aquifer After Source Remedy (Soil > 100 mg/kg Treated to 90%) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consulta its of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 10B Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. A 003218 Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Property Parcel with ID T• 99 % PCE > 100 mg/kg removed (41 ppb) • 99 % PCE > 100 mg/kg removed (3.3 ppb) �--�� 99 % PCE > 100 mg/kg removed (11 ppb) 99 % PCE > 100 mg/kg removed (0.7 ppb) Aspen Investments Property Boundary PCE > 100 mg/kg footprint in Middle Aquifer PCE > 10 mg/kg footprint in Middle Aquifer Modeled Tetrachloroethene Isocontours in the Middle Aquifer After Source Remedy (Soil > 100 mg/kg Treated to 99%) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 1OC 108760 034658 Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. .--. . Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Aspen Investments Property Boundary Property Parcel with ID No remedy PCE > 100 mg/kg removed (41 ppb) No remedy PCE > 100 mg/kg removed (11 ppb) No remedy PCE > 100 mg/kg removed (3.3 ppb) No remedy PCE > 100 mg/kg removed (0.7 ppb) P CE > 100 mg/kg footprint in Lower Aquifer P CE > 10 mg/kg footprint in Lower Aquifer Modeled Tetrachloroethene Isocontours in the Lower Aquifer After Source Remedy (No PCE Remedy Scenario) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 11A 104435 Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. N^ Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Aspen Investments Property Boundary Property Parcel with ID 90 % PCE > 100 mg/kg removed (41 ppb) �--�� 90 % PCE > 100 mg/kg removed (11 ppb) ----• 90 % PCE > 100 mg/kg removed (3.3 ppb) 90 % PCE > 100 mg/kg removed (0.7 ppb) PCE > 100 mg/kg footprint in Lower Aquifer PCE > 10 mg/kg footprint in Lower Aquifer Modeled Tetrachloroethene Isocontours in the Lower Aquifer After Source Remedy (Soil > 100 mg/kg Treated to 90%) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consulta its of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 11B 108760 034658 Notes: 1. Aerial imagery from North Carolina OneMap (2013). 2. Property boundaries are from Nash County website (28 March 2017). 3. PCE indicates tetrachloroethene. 4. mg/kg indicates milligrams per kilogram. 5. Ibs indicates pounds 6. ppb indicates parts per billion. N^ Legend Total PCE Mass >100 mg/kg = 11,000 Ibs Aspen Investments Property Boundary 1—•— 99 % PCE > 100 mg/kg removed (41 ppb) +� 99 % PCE > 100 mg/kg removed (11 ppb) ---• 99 % PCE > 100 mg/kg removed (3.3 ppb) — 99 % PCE > 100 mg/kg removed (0.7 ppb) Property Parcel with ID PCE > 100 mg/kg footprint in Lower Aquifer PCE > 10 mg/kg footprint in Lower Aquifer Modeled Tetrachloroethene Isocontours in the Lower Aquifer After Source Remedy (Soil > 100 mg/kg Treated to 99%) Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec Consulta its of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 11C O --t Legend + Middle Aquifer Monitoring Well Groundwater Elevation Contours (ft asml) - Groundwater Flow Direction Original Rocky Mount Property Boundary Notes - Locations are approximate, based on figures produced by ERM. - Aerial imagery from ArcGIS Online. Photograph taken 21 May 2014, provided courtesy of NAIP. - Groundwater elevations measured 24 August through 26 August 2020. MW-43S 99.9 M W-52 102�46 OMW-72S 110�4 MW-42S 124.74 MW-16D 8.113.49 MW-56S 120.86 . w At MW-150S MW-44S 11244 MW-37S 114.3 MW-39S 120.14 118.22 MW-69S 119.93 MW-60S 119.37 Groundwater Elevation Contours - Middle Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Ge o s V L tec ° coosymec constiltaB s of NC, P.L _ J NC License NO.: C-35QQ and C-2.4 consultants Raleigh January 2021 Figure 3A -2021'' CH A837304-03 - -t Legend ♦ Lower Aquifer Monitoring Well • Lower Aquifer Piezometer ti Groundwater Flow Direction Groundwater Elevation Contours (ft asml) Original Rocky Mount Property Boundary Notes - Locations are approximate, based on figures produced by ERM. - Aerial imagery from ArcGIS Online. Photograph taken 21 May 2014, provided courtesy of NAIP. - Groundwater elevations measured 24 August through 26 August 2020. MW-43D 100.16 MW-53D 102.94 MW-49D 103.18 MW-72D 113.44 MW-71D 119.87 MW-73D 120.16 TPZ'6 120.02 i, MW-41DDR 120.05 MW-70D 120:09 119.97 MW-46D MW-44D 108.57 MW-48D 114.42 MW'37D 114.53 MW-47D 114.57 MW-09D 114.55 :f " MW-63D MW-67D 1115.19 119.94 120.85 120.01 MW-68D MW-66D 120.46 120.15 MW-58D 120.01 ' MW-06D 120.71 r- t MW-60D 119.33 MW-59D 114.99 Groundwater Elevation Contours - Lower Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° consultants ti easyixet Consul can is of NC, P.0 NC License No.: C-350O and C-2!] Raleigh January 2021 Figure 3B 3. INJECTANT INFORMATION— Per 15A NCAC 02C .0225(0(6). provide information on each injectant as indicated below: (A) MSDS, concentration at the point of injection, and percentage if present in a mixture with other injectants; (B) The source of fluids used to dilute, carry, or otherwise distribute the injectant throughout the injection zone. If any well within the area of review of the injection facility is to be used as the fluid source, then the following information shall be submitted: location/ID number, depth of source, formation, rock/sediment type, and a 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; (C) A description of the rationale for selecting the injectants and concentrations proposed for injection, including an explanation or calculations of how the proposed injectant volumes and concentrations were determined; (D) 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; (E) A summary of results if modeling or testing was performed to investigate the injectant's potential or susceptibility for biological, chemical, or physical change in the subsurface; and (F) An evaluation concerning the development of byproducts of the injection process, including increases in the concentrations of naturally occurring substances. Such an evaluation shall include the identification of the specific byproducts of the injection process, projected concentrations of byproducts, and areas of migration as determined through modeling or other predictive calculations. (A) The following is a summary of concentrations of the primary injectant materials at the point of injection: Treatment Area Aquifer Carbon Amendment Diluted Carbon Amendment Concentration (lb/gal) ZVI ZVI Concentration (lb/gal) High Concentration Middle ABC+ 0.55 ZVI 0.55 Lower 0.55 ZVI 0.55 Middle ABC 0.21 -- -- Lower 0.21 -- -- Downgradient Middle ABC 0.21 -- -- Lower 0.21 -- -- ABC refers to the product Anaerobic Biochem (ABC®) by Redox Tech, LLC. ABC+ is a mixture of ABC and zero-valent iron (ZVI). ZVI and ABC will be mixed at a 1:1 basis by weight. Safety Data Sheets (SDSs) for primary injectant materials (ABC and ZVI) are attached. SDSs are also attached for select other materials used during injections (KB-1/KB-1 Plus and KB- 1 Primer). KB-1 Primer will be applied at a 0.2-0.8 kg to 250-gal ratio for diluted electron donor or anaerobic chase water. Information sheets for these materials are also attached. (B) Source water will be obtained from the onsite fire hydrant, provided approval or the appropriate applications or permits from the City of Rocky Mount. (C) See attached Appendix F (Electron Donor Dosing and Injection Volume Calculations and KB-1 Bioaugmentation Dosing) for details on the ABC/ABC+ and KB-1/KB-1 Plus dosing calculations (Geosyntec, 2021b). ABC was selected as the primary injectant because it has previously been used on site for the same purpose and was successful in remediating tetrachloroethene (PCE) impacts. ABC+ (ABC and ZVI mixture) was selected to treat select areas with elevated PCE concentrations, as ZVI promotes anaerobic biodegradation and reductive dechlorination of halogenated solvents in groundwater. The ZVI enables immediate reduction by providing short and long-term nutrients to anaerobic growth. ABC/ABC+ dosing was were adjusted based on the PCE concentrations (higher concentration areas received higher dosing). (D) The primary contaminant of concern is PCE. Using ABC/ABC+, degradation of chlorinated volatile organic compounds (CVOCs) begins via dechlorination. Degradation rates using ZVI are orders of magnitude greater than natural conditions, thus the degradation of CVOCs does not result in the formation ethane, ethane, and methane. Ethyl lactate converts to ethanol and lactic acid through hydrolysis. The following describes the elimination pathway prompted by ABC+ (ABC with ZVI) and ABC, respectively: 13 -elimination = TCE 4 chloroacetylene 4 acetylene 4 ethane Hydrogenolysis Pathway = TCE 4 cis-DCE 4 vinyl chloride 4 ethene 4 ethane (E) N/A (F) There is potential for these technologies to generate secondary impacts, such as increased concentrations of methyl ethyl ketone (MEK) in impacted injection areas. During the previous bioremediation implementation at the Site (2007 to 2008, which utilized ABC), elevated MEK concentrations were observed in a single monitoring well. Concentrations of MEK typically attenuate rapidly to background concentrations (Fowler, et. al, 2011). MEK concentrations will be monitored, as shown in the attached proposed Performance Monitoring Plan (Geosyntec, 2021b). ABC November2014 SAFETY DATA SHEET Anaerobic BioChem (ABC) i. PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME: Anaerobic BioChem GENERAL USE: Bioremediation of halogenated organics and metals MANUFACTURER: EMERGENCY TELEPHONE: Redox Tech, LLC 200 Quade Drive Cary, NC 27513 919-678-0140 Within USA and Canada: 1-800-424-9300 +1 703-527-3887 (collect calls accepted) 2. HAZARDS IDENTIFICATION EMERGENCY OVERVIEW: Product is generally recognized as safe. May cause irritation exposure to eyes. Long term contact to skin may cause some drying and minor irritation. 3. COMPOSITION INFORMATION ON INGREDIENTS Proprietary mixture of fatty acids, glycerol, lactates and dipotassium phosphate. 4. FIRST AID MEASURES EYES: Immediately flush with water for up to 15 minutes. If irritation persists, seek medical attention. SKIN: Rinse with water. Irritation is unlikely, but if irritation occurs or persists, seek medical attention. INGESTION: Generally safe to ingest but not recommended. INHALATION: No first aid required. 5. FIRE FIGHTING MEASURES EXTINGUISHING MEDIA: Deluge with water FIRE/EXPLOSION HAZARDS: Product is combustible only at temperatures above 600C FIRE FIGHTING PROCEDURES: Use flooding with plenty of water, carbon dioxide or other inert gasses. Wear full protective clothing and self-contained breathing apparatus. Deluging with water is the best method to control combustion of the product. ABC FLAMMABILITY LIMITS: non-combustible SENSITIVITY TO IMPACT: non -sensitive SENSITIVITY TO STATIC DISCHARGE: non-senstive 6. ACCIDENTAL RELEASE MEASURES November2014 Confine and collect spill. Transfer to an approved DOT container and properly dispose. Do not dispose of or rinse material into sewer, stormwater or surface water. Discharge of product to surface water could result in depressed dissolved oxygen levels and subsequent biological impacts. 7. HANDLING AND STORAGE HANDLING: Protective gloves and safety glasses are recommended. STORAGE: Keep dry. Use first in, first out storage system. Keep container tightly closed when not in use. Avoid contamination of opened product. Avoid contact with reducing agents. 8. EXPOSURE CONTROLS - PERSONAL PROTECTION EXPOSURE LIMITS Chemical Name ACGIH OSHA Supplier ABC NA NA NA ENGINEERING CONTROLS: None are required PERSONAL PROTECTIVE EQUIPMENT EYES and FACE: Safety glasses recommended RESPIRATOR: none necessary PROTECTIVE CLOTHING: None necessary GLOVES: rubber, latex or neoprene recommended but not required 9. PHYSICAL AND CHEMICAL PROPERTIES Odor: Appearance: Auto -ignition Temperature Boiling Point Melting Point Density Solubility pH none to mild pleasant organic odor clear to light amber Non-combustible >600 C NA 1.15 gram/cc infinite 7-9 ABC November2014 1o. STABILITY AND REACTIVITY CONDITIONS TO AVOID: Do not contact with strong oxidizers STABILITY: product is stable POLYMERIZATION: will not occur INCOMPATIBLE MATERIALS: strong oxidizers HAZARDOUS DECOMPOSITION PRODUCTS: 11. TOXICOLOGICAL INFORMATION Acute Toxicity A: General Product Information Acute exposure may cause mild skin and eye irritation. B: Component Analysis - LD50/LC50 No information available. B: Component Analysis - TDLo/LDLo TDLo (Oral -Man) none Carcinogenicity A: General Product Information No information available. B: Component Carcinogenicity Product is not listed by ACGIH, IARC, OSHA, NIOSH, or NTP. Epidemiology No information available. Neurotoxicity No information available. 12. ECOLOGICAL INFORMATION Ecotoxicity Discharge to water may cause depressed dissolved oxygen and subsequent ecological stresses Environmental Fate No potential for food chain concentration 13. DISPOSAL CONSIDERATIONS DISPOSAL METHOD: Material is not considered hazardous, but consult with local, state and federal agencies prior to disposal to ensure all applicable laws are met. ABC November2014 14. TRANSPORT INFORMATION NOTE: The shipping classification information in this section (Section 14) is meant as a guide to the overall classification of the product. However, transportation classifications may be subjectto change with changes in package size. Consult shipperrequirements under I.M.O., I.C.A.O. (I.A.T.A.) and 49 CFR to assure regulatory compliance. US DOT Information Shipping Name: Not Regulated Hazard Class: Not Classified UN/NA #: Not Classified Packing Group:None Required Label(s):None 50tIEdition International Air Transport Association (IATA): Not hazardous and not regulated INTERNATIONAL MARITIME DANGEROUS GOODS (IMDG) Material is not regulated under IMDG is. REGULATORY INFORMATION UNITED STATES SARA TITLE III SECTION 311 No Hazard for Immediate health Hazard SECTION 312 No Threshold Quanitity SECTION 313 Not listed CERCLA NOT REGULATED UNDER CERCLA TSCA NOT REGULATED UNDER TSCA CANADA (WHIMS): NOT REGULATED 16. OTHER INFORMATION HMIS: Health 1 Flammability 0 Physical Hazard 0 Personal Protection E E: Safety Glasses, gloves KB-1® and KB-1® Plus for Remediation of Chlorinated Solvents 1. Phil Dennis, SiREM 2. Anaerobic bioaugmentation cultures containing the dechlorinating bacteria Dehalococcoides, Dehalobacter, Dehalogenimonas and Geobacter 3. MSDS/technical information attached 4. Number of field scale applications to date: hundreds of sites 5. Case studies attached KB-1® and KB-1® Plus are natural, non-pathogenic, anaerobic microbial consortiums (mixed cultures) proven to rapidly and completely degrade chlorinated solvents such as tetrachloroethene (PCE), trichloroethene, cis-1,2-dichloroethene, 1,1-dichloroethene and vinyl chloride, 1,1,1-trichloroethane, 1,1-dichloroethane 1,2-dichloroethane, 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane, chloroform, and dichloromethane to non -toxic, environmentally acceptable, end products such as ethane, ethane and acetate. These cultures and were derived from naturally occurring bacterial populations found in soil and groundwater at chlorinated solvent sites located in North America and are not genetically modified. The KB-1® and KB-1 Plus cultures are produced in SiREM's facility in Guelph, Ontario, under sterile conditions following stringent quality assurance/quality control (QA/QC) procedures. The cultures are routinely screened for pathogens and pathogens have not been detected since large scale production commenced in 2002. The cultures are shipped to the application site in stainless steel vessels by express courier and are applied under anaerobic conditions to prevent the exposure of oxygen sensitive microbes to air. KB-1® and KB-1® Plus have been applied at more than 60 sites in California including several sites in the Los Angeles region. The cultures have received waste discharge requirement (WDR) approval from California Regional Water Quality Boards in 7 of 9 regions. KB-1® has also been approved for injection in other jurisdictions, KB-1® was added to Environment Canada's Domestic Substances List in 2008 (DSL) for use in groundwater remediation in Canada. KB-1®and selected KB-1® Plus cultures are approved as groundwater injectants by the North Carolina Department of Water Quality. KB-1® and KB-1® Plus were approved in 2012 for import into Australia and have a history of safe use in and in 39 US states, Canada, 5 European countries and Malaysia. Zero Valent Iron (ZVI) June 2016 SAFETY DATA SHEET Zero Valent Iron (ZVI) Section 1. PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME: ZVI GENERAL USE: MANUFACTURER: Redox Tech, LLC 200 Quade Drive Cary, NC 27513 919-678-0140 Chemical reduction of halogenated organics and -or metals EMERGENCY TELEPHONE: Within USA and Canada: 1-800-424-9300 +1 703-527-3887 (collect calls accepted) Section 2. HAZARDS IDENTIFICATION Physical state : Solid (Powder) Emergency Overview Routes of entry Potential acute health effects Eyes Skin Inhalation Ingestion Potential Chronic Effects: Medical conditions Potential dust explosion. Avoid contact with oxidizing agents. USE WITH CARE. Follow good industrial hygiene practice Demal contact. Eye contact. Inhalation Ingestion. May cause eye irritation. No known significant effects or critical hazards May cause respiratory tract irritation. No known significant effects or critical hazards : Carcinogenic effects: Not classified or listed by IARC, NTP, OSHA, EU AND ACGIH. Mutagenic effects: Not available : Teratogenic effects: Not Available : Repeated exposure of the eyes to a low level of dust can produce eye irritation Section 3. COMPOSITION INFORMATION ON INGREDIENTS Greater than 98% Iron CAS# 7439-89-6 Contains carbon, sulfur and other metal impurities. Section 4. FIRST AID MEASURES Eye contact Skin contact Inhalation Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 20 minutes. Get medical attention if irritation occurs Wash with soap and water. Get medical attention if irritation occurs. Move person to fresh air. Get medical attention if breathing difficulty persists Zero Valent Iron (ZVI) June 2016 Ingestion Do not induce vomiting. Never give anything by mouth to an unconscious person. Get medical attention if symptoms appear. Notes to physician: No specific antidote. Material is used as an iron supplement in food and vitamins Treatment would be the same as for iron overdose. Section 5. FIRE FIGHTING MEASURES Flammability of the product Fire -fighting media Special protective Equipment for fire-fighters Special remarks on fire Generally non-flammable but susceptible to dust explosion. Use a fog nozzle to spray water. Fire-fighters should wear appropriate protective equipment. As with any finely granulated product, a risk of dust explosion is present should the material be dispersed in air and exposed to a source of ignition. Fine powder can form flammable and explosive mixtures in air. Section 6. ACCIDENTAL RELEASE MEASURES In case of a significant release, take immediate efforts to minimize discharge to surface water (storm drains, streams, lakes, rivers, etc). If the release occurs in a closed area, take steps to improve ventilation. If improvement of ventilation is not possible, call the fire depailment. The material can be swept up and placed into approved storage containers. Do not use a vacuum to gather the material because this may result in dispersion of dust particles and increase the risk for a dust explosion. Section 7. HANDLING AND STORAGE The material should be stored in a cool, dry, environment. It is not recommended to store the material in the proximity of oxidants. When handling the product, wear a dusk mask, eye protection and gloves. The product should always be handled in a well ventilated environment. Section 8. EXPOSURE CONTROLS — PERSONAL PROTECTION Engineering controls Personal protection Eyes Respiratory Hands Use process enclosures, local exhaust ventilation or other engineering controls to keep airborne levels below recommended exposure limits. If user operations generate dust, fumes or mist, use ventilation to keep exposure to airborne contaminants below the exposure limit. Safety eyewear complying with an approved standard should be used and selected based on the t ask being performed and the risks involved (avoid exposure to liquid splashed, mists, gases or dusts). Where there is a risk of exposure to high velocity particles safety glasses or face shield complying with an approved standard should be used to protect against impact. Where there is a risk of exposure to dusts, goggles should be used. Recommended: Safety glasses. Dusk mask or respirator is recommended. Gloves are recommended Zero Valent Iron (ZVI) June 2016 Skin/Body Personal protective equipment for the body should be selected based on the task being performed and the risks involved. Risk from dermal contact is minimal Section 9. PHYSICAL AND CHEMICAL PROPERTIES Physical State Solid (Powder) Color Gray Melting/freezing point 1535°C (2795°F) Specific gravity 7.88 Bulk density 2.4 to 3.2 g/cm3 Solubility Insoluble in water Section 10. STABILITY AND REACTIVITY The product is reactive with oxidizers. Precautions should be taken not to store or contact the product with oxidizers. Fine particles of this product (not widely found in this grade) have a potential for a dust explosion. The product should be handled in a well ventilated area where dust generation is minimized. Section 11. TOXICOLOGICAL INFORMATION Acute Effects Eyes May cause eye irritation. Skin No known significant effects or critical hazards Inhalation May cause respiratory tract irritation. Ingestion No known significant effects or critical hazards Chronic Health Effects: Carcinogenic effects: Not classified or listed by IARC, NTP, OSHA, EU and ACGIH Section 12. ECOLOGICAL INFORMATION Will reduce dissolved oxygen levels in aquatic ecosystems. Direct discharge to surface water should be avoided. Section 13. DISPOSAL CONSIDERATIONS The generation of waste should be avoided or minimized to the extent practical. Disposal of this product, solutions and any by-products should be completed in an environmentally responsible manner that complies with all local, state and federal laws. Section 14. TRANSPORT INFORMATION Classification: AND/ADR/TDG/DOT/IMDG/IATA: Not regulated. Zero Valent Iron (ZVI) June 2016 Section 15. REGULATORY INFORMATION This product is not regulated in the United States and Canada. The user should ensure this product is not regulated where used. Section 16. OTHER INFORMATION Health 0 Fire Hazard 2 Reactivity 1 Personal Protection C SiREM Leading Science • Lasting Solutions KB-1® Material Safety Data Sheet Section 1: Material Identification Trade Name: KB1® Chemical Family: bacterial mixture Chemical name: No IUC name for mixture is known to exist Manufacturer/Supplier: SiREM 130 Research Lane, Suite 2, Guelph, Ontario, Canada N1G 5G3 For Information call: 519-822-2265 / 1-866-251-1747 x236 Emergency Number: 519-822-2265 Description: Microbial inoculum (non-pathogenic, non -hazardous) Trade Name: KB1® Product Use: Bioremediation of contaminated groundwater. Date Prepared: 2 February 2005 130 Research Lane, Ste 2 Guelph ON N1G 5G3 (519) 822-2265 Section 2: Composition, Information on Ingredients KB1® is a microbial culture grown in an aqueous dilute mineral salt solution media containing no hazardous ingredients. The microbial composition of KB-1® (as determined by phylogenetic analysis) is listed in Table 1. Identification of organisms was obtained by matching 16S rRNA gene sequence of organisms in KB-1® to other known organisms. The characteristics of related organisms can be used to identify potential or likely characteristics of organisms in KB-1®. Table 1. Genus' Identified in KB-1 ° Microbial lnoculum Genus Dehalococcoides sp. Geobacter sp. Methanomethlovorans sp. Section 3: Hazards Identification: A review of the available data does not indicate any known health effects related to normal use of this product. Section 4: First Aid Measures: Avoid direct contact with skin and eyes. In any case of any exposure which elicits a response, a physician should be consulted immediately. Eye Contact: Flush eyes with water for at least 15 minutes, occasionally lift upper and lower eyelids, if undue irritation or redness occurs seek medical attention. Skin Contact: Remove contaminated clothing and wash skin thoroughly with water and antibacterial soap. Seek medical attention if irritation develops or open wounds are present. KB•T siremlab.com 1/4 SiREM Ingestion: Do not induce vomiting, drink several cups of water, seek medical attention. Inhalation: Remove to fresh air. If not breathing give artificial respiration. In case of labored breathing give oxygen. Call a physician. Section 5 - Fire Fighting Measures: Non-flammable Flash Point: not applicable Upper flammable limit: not applicable Lower flammable limit: not applicable Section 6 — Accidental Release Procedures Spilled KB-1° should be soaked up with sorbant and saturated with a 10% bleach solution (prepared by making a one in ten dilution of diluted standard bleach [normally sold at a strength of 5.25% sodium hypochlorite] to disinfect affected surfaces. Sorbant should be double bagged and disposed of as indicated in section 12. After removal of sorbant, area should be washed with 10% bleach solution to disinfect. If liquid from the culture vessel is present on the fittings, non -designated tubing or exterior of the stainless steel pressure vessel liquid should be wiped off and the area washed with 10% bleach solution. Section 7 - Handling and Storage KB-1° is shipped in stainless steel pressure vessels and connected to injection lines and inert gas is used to pressurize the vessel to displace the contents. KB1® should be handled with care to avoid any spillage. Vessels are shipped with 1 pound per square inch (psi) pressure; valves should not be opened until connections to appropriate lines for subsurface injection are in place. Storage Requirements: Avoid exposing stainless steel pressure vessels to undue temperature extremes (i.e., temperatures less than 0°C or greater than 30°C may result in harm to the microbial cultures and damage to the vessels). All valves should be in the closed position when the vessel is not pressurized or not in use to prevent the escape of gases and to maintain anaerobic conditions in the vessel. Avoid exposure of the culture to air as the presence of oxygen will kill dechlorinating microorganisms. Section 8 - Exposure Controls/Personal Protection Personal protective equipment: Skin: Protective gloves (latex, vinyl or nitrile) should be worn. Eye Protection: Wear appropriate protective eyeglasses or goggles when opening pressure vessels, valves, or when pressurizing vessels to inject contents into the subsurface. Respiratory: No respiratory protection is required. Engineering Controls: Good general room ventilation is expected to be adequate. Section 9: Physical and Chemical Properties: Physical State: liquid Odour: skunky odour Appearance: dark grey, slightly turbid liquid under anaerobic conditions, pink if exposed to air (oxygen). Specific gravity: not determined Vapor pressure: not applicable Vapor density: not applicable Evaporation rate: not determined Boiling point: —100° C Freezing point/melting point: — 0°C KB•T siremlab .corn 2/4 SiREM pH: 6.5-7.5 Solubility: fully soluble in water Section 10 — Stability and Reactivity Data Stable and non -reactive. Maintain under anaerobic conditions to preserve product integrity. Materials to avoid: none known Section 11 - Toxicological Information Potential for Pathogenicity: KB1® has tested negative (i.e., the organisms are not present) for a variety of pathogenic organisms listed in Table 2. While there is no evidence that virulent pathogenic organisms are present in KB-1®, there is potential that certain organisms in KB-1® may have the potential to act as opportunistic (mild) pathogens, particularly in individuals with open wounds and/or compromised immune systems. For this reason standard hygienic procedures such as hand washing after use should be observed. Table 2, Results of Human Pathogen Screening of KB-1®Dechlorinator Organism Disease(s) Caused Test result Salmonella sp. Typhoid fever, gastroenteritis Not Detected Listeria monocytogenes Listerioses Not Detected Vibrio sp., Cholera, gastroenteritis Not Detected Campylobacter sp., Bacterial diarrhea Not Detected Clostridia sp., Food poisoning, Botulism, tetanus, gas gangrene Not Detected Bacillus anthracis Anthrax Not Detected Pseudomonas aeruginosa Wound infection Not Detected Yersinia sp., Bubonic Plague, intestinal infection Not Detected Yeast and Mold Candidiasis, Yeast infection etc. Not Detected Fecal coliforms Indicator organisms for many human pathogens diarrhea, urinary tract infections Not Detected Enterococci Various opportunistic infections Not Detected Section 12. Disposal Considerations Material must be disinfected or sterilized prior to disposal. Consult local regulations prior to disposal. Section 13 — Transport Information Non -hazardous, non-pathogenic microbial inoculum — Biosafety Risk Group 1. Chemicals, Not Otherwise Indexed (NOI), Non -hazardous Not subject to TDG or DOT guidelines. KB•T siremlab.com 3/4 SiREM Disclaimer: The information provided on this MSDS sheet is based on current data and represents our opinion based on the current standard of practice as to the proper use and handling of this product under normal, reasonably foreseeable conditions. Last revised: 2 August 2011 KB•T siremlab.com 4/4 SiREM Leading Science • Lasting Solutions KB-1® Plus Material Safety Data Sheet Section 1: Material Identification Trade Name: KB-16Plus Chemical Family: bacterial mixture Chemical name: No IUC name for mixture is known to exist Manufacturer/Supplier: SiREM 130 Research Lane, Suite 2, Guelph, Ontario, Canada N 1 G 5G3 For Information call: 519-822-2265 / 1-866-251-1747 x236 Emergency Number: 519-822-2265 Description: Microbial inoculum (non-pathogenic, non -hazardous) Trade Name: KB-1° Plus Product Use: Bioremediation of contaminated groundwater. Date Prepared: 23 October 2008 130 Research Lane, Ste 2 Guelph ON N1G 5G3 (519) 822-2265 Section 2: Composition, Information on Ingredients KB1® Plus is a microbial culture grown in a dilute aqueous mineral salt solution media containing no hazardous ingredients. The microbial composition of KB-1°Plus is listed in Table 1. Table 1. Major Microbial Groups Identified in KB-1® Plus Microbial Inoculum Dehalococcoides sp. Geobacter sp. Methanomethylovorans sp. Dehalobacter sp. Dehalogenimonas sp. Section 3: Hazards Identification: A review of the available data does not indicate any known health effects related to normal use of this product. Section 4: First Aid Measures: Avoid direct contact with skin and eyes. In any case of any exposure which elicits a response, a physician should be consulted immediately. Eye Contact: Flush eyes with water for at least 15 minutes, occasionally lift upper and lower eyelids, if undue irritation or redness occurs seek medical attention. Skin Contact: Remove contaminated clothing and wash skin thoroughly with water and antibacterial soap. Seek medical attention if irritation develops or open wounds are present. 1�(�T B.1' siremlab.com 1/3 SiREM Ingestion: Do not induce vomiting, drink several cups of water, seek medical attention. Inhalation: Remove to fresh air. If not breathing give artificial respiration. In case of labored breathing give oxygen. Call a physician. Section 5 - Fire Fighting Measures: Non-flammable Flash Point: not applicable Upper flammable limit: not applicable Lower flammable limit: not applicable Section 6 — Accidental Release Procedures Spilled KB-1® Plus should be soaked up with sorbant and saturated with a 10% bleach solution (prepared by making a one in ten dilution of diluted standard bleach [normally sold at a strength of 5.25% sodium hypochlorite] to disinfect affected surfaces. Sorbant should be double bagged and disposed of as indicated in section 12. After removal of sorbant, area should be washed with 10% bleach solution to disinfect. If liquid from the culture vessel is present on the fittings, non -designated tubing or exterior of the stainless steel pressure vessel liquid should be wiped off and the area washed with 10% bleach solution. Section 7 - Handling and Storage KB-1® Plus is shipped in stainless steel pressure vessels in a protective over pack. KB-1® Plus should be handled with care to avoid any spillage. Vessels are shipped with 1 pound per square inch (psi) pressure; valves should not be opened until connections to appropriate lines for subsurface injection are in place. Storage Requirements: Avoid exposing stainless steel pressure vessels to undue temperature extremes (i.e., temperatures less than 0°C or greater than 30°C may result in harm to the microbial cultures and damage to the vessels). All valves should be in the closed position when the vessel is not pressurized or not in use to prevent the escape of gases and to maintain anaerobic conditions in the vessel. Avoid exposure of the culture to air as the presence of oxygen will kill dechlorinating microorganisms. Section 8 - Exposure Controls/Personal Protection Personal protective equipment: Skin: Protective gloves (latex, vinyl or nitrile) should be worn. Eye Protection: Wear appropriate protective eyeglasses or goggles when opening pressure vessels, valves, or when pressurizing vessels to inject contents into the subsurface. Respiratory: No respiratory protection is required. Engineering Controls: Good general room ventilation is expected to be adequate. Section 9: Physical and Chemical Properties: Physical State: liquid Odour: skunky odour Appearance: dark grey, slightly turbid liquid under anaerobic conditions, pink if exposed to air (oxygen). Specific gravity: 1 Vapor pressure: not applicable Vapor density: not applicable Evaporation rate: not determined Boiling point: —100° C Freezing point/melting point: — 0°C KM' I si• remlab.com 2/3 SiREM pH: 6.5-7.5 Solubility: fully soluble in water Section 10 — Stability and Reactivity Data Stable and non -reactive. Maintain under anaerobic conditions to preserve product integrity. Materials to avoid: none known Section 11 - Toxicological Information Potential for Pathogenicity: KB1® Plus has tested negative (i.e., the organisms are not present) for a variety of pathogenic organisms listed in Table 2. While there is no evidence that virulent pathogenic organisms are present in KB-1° Plus, there is potential that certain organisms in KB-1® Plus may have the potential to act as opportunistic (mild) pathogens, particularly in individuals with open wounds and/or compromised immune systems. For this reason standard hygienic procedures such as hand washing after use should be observed. Table 2, Results of Human Pathogen Screening of KB-1°Plus Organism Disease(s) Caused Test result Salmonella sp. Typhoid fever, gastroenteritis Not Detected Listeria monocytogenes Listerioses Not Detected Vibrio sp., Cholera, gastroenteritis Not Detected Campylobacter sp., Bacterial diarrhea Not Detected Clostridia sp., Food poisoning, Botulism, tetanus, gas gangrene Not Detected Bacillus anthracis Anthrax Not Detected Pseudomonas aeruginosa Wound infection Not Detected Yersinia sp., Bubonic Plague, intestinal infection Not Detected Yeast and Mold Candidiasis, Yeast infection etc. Not Detected Fecal coliforms Indicator organisms for many human pathogens diarrhea, urinary tract infections Not Detected Enterococci Various opportunistic infections Not Detected Section 12. Disposal Considerations Material must be disinfected or sterilized prior to disposal. Consult local regulations prior to disposal. Section 13 — Transport Information Non -hazardous, non-pathogenic microbial inoculum Chemicals, Not Otherwise Indexed (NOI), Non -hazardous Not subject to TDG or DOT guidelines. Disclaimer: The information provided on this MSDS sheet is based on current data and represents our opinion based on the current standard of practice as to the proper use and handling of this product under normal, reasonably foreseeable conditions. Last revised: 12 June 2012 FJi"I m I si• remlab.com 3/3 :0 SiREM Leading Science • Lasting Solutions Chemical Components in KB-1® Growth Media 130 Research Lane, Ste 2 Guelph ON N1G 5G3 (519) 822-2265 KB1® consists of a microbial culture grown in a mineral salts media containing the ingredients listed in Table 1. Table 1: Chemical Ingredients of KB-1® growth media Chemical Name Formula CAS# Concentration grams/Liter Potassium Phosphate Dibasic KH2PO4 7758-11-4 0.27 Potassium Phosphate Monobasic K2HPO4 7778-77-0 0.34 Ammonium Chloride NH4CI 12125-02-9 0.535 Calcium Chloride CaCl2 10035-04-8 0.07 Magnesium Sulfate MgSO4 10034-99-8 0.125 Ferrous Chloride FeCl2 13478 0.02 Sodium bicarbonate NaHCO3 144-55-8 2.0 Ferrous Ammonium Sulfate (NH4)2Fe(SO4)2 7783-85-9 0.4 Sodium sulfide Na2S 1313-84-4 0.12 Resazurin Cl2H6NNaO4 62758-13-8 0.001 Boric Acid H3BO3 10043-35-3 0.0006 Zinc Chloride ZnCI 7646-85-7 0.0002 Sodium Molybdate Na2MoO4 10102-40-6 0.0002 Nickel II Chloride NiCl2 7791-20-0 0.0015 Manganese Chloride MnCl2 13446-34-9 0.002 Copper II Chloride CuCl2 10125-13-0 0.0002 Cobalt Chloride CoCl2 7791-13-1 0.003 Disodium Selenite Na2SeO3 10102-18-8 0.00004 Aluminum Trisulfate AI2(SO4)3 10043-01-3 0.0002 Vitamins Various Various 0.01 maximum siremlab.com "SiREM SAFETY DATA SHEET KB-1® Primer Prepared according to U.S. OSHA, CMA, ANSI, Canadian WHMIS, Australian WorkSafe, Japanese Industrial Standard JIS Z 7250:2000, and European Union REACH Regulations SECTION 1 - PRODUCT AND COMPANY IDENTIFICATION 1.1 PRODUCT NAME: PRODUCT CODE: CHEMICAL FAMILY NAME: U.N. NUMBER: U.N. DANGEROUS GOODS CLASS: 1.2 PRODUCT USE: 1.3 SUPPLIER/MANUFACTURER'S NAME: ADDRESS: 1.4 EMERGENCY PHONE: BUSINESS PHONE: WEB SITE: 1.5 DATE OF PREPARATION: DATE OF LAST REVISION: KB-1® Primer N/A Mixture None Not Regulated For preparation of anaerobic water for use in groundwater remediation. KB1® products are intended for laboratory research and field applications for groundwater remediation, and are not intended to be used as human or animal therapeutics, cosmetics, agricultural or pesticidal products, food additives, or as household chemicals. SiREM 130 Stone Road, West, Guelph, Ontario Canada N1G 3Z2 519-515-0840 519-515-0840 (Product Information) www.siremlab.com December 05, 2018 New SECTION 2 - HAZARDS IDENTIFICATION 2.1 Classification of the mixture: This product does meet the definition of a hazardous substance or preparation as defined by 29 CFR 1910. 1200 AND the European Union Council Directives 67/548/EEC, 1999/45/EC, 1272/2008/EC, 2015/830/EU and subsequent Directives. Component(s) Contributing to Classification(s) L-Cysteine 2.2 GHS Label elements, including precautionary statements: Pictogram(s): None applicable. Signal Word: Warning! GHS Hazard Classification(s): Acute Toxicity Category 5 (Oral) Hazard Statement(s): H303: May be harmful if swallowed Prevention Statement(s): None Applicable Response Statement(s): P312: Call a POISON CENTER/doctor if you feel unwell. Storage Statement(s): None Applicable Disposal Statement(s): None Applicable. 2.3 Other Hazards: This mixture does not meet the criteria for PBT or vPvB in accordance with Annex VII. December 2018 Page 1 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer SECTION 3 - COMPOSITION and INFORMATION ON INGREDIENTS 3.1 Substances: Not applicable 3.2 Mixtures: HAZARDOUS INGREDIENTS: CAS # EINECS # Index # WT % GHS CLASSIFICATION L-Cysteine 52-90-4 200-158-2 Not Listed 1-10% ACUTE TOX. CAT 4 (ORAL) Balance of other ingredients are non -hazardous or hazardous below the applicable cut-off level. Additional Information: See SECTION 16 for full classification phrases. SECTION 4 - FIRST -AID MEASURES 4.1 Description of first aid measures: Contaminated individuals of chemical exposure must be taken for medical attention if any adverse effect occurs. Rescuers should be taken for medical attention, if necessary. Take copy of label and SDS to health professional with contaminated individual. EYE CONTACT: If product enters the eyes, open eyes while under gentle running water for at least 15 minutes. Seek medical attention if irritation persists. SKIN CONTACT: Wash skin thoroughly after handling. Seek medical attention if irritation develops and persists. Remove contaminated clothing. Launder before re -use. INHALATION: If breathing becomes difficult, remove victim to fresh air. If necessary, use artificial respiration to support vital functions. Seek medical attention. INGESTION: If product is swallowed, call physician or poison control center for most current information. If professional advice is not available, do not induce vomiting. Never induce vomiting or give diluents (milk or water) to someone who is unconscious, having convulsions, or who cannot swallow. Seek medical advice. Take a copy of the label and/or SDS with the victim to the health professional. 4.2 Most important symptoms and effects, both acute and delayed: May be harmful if swallowed. See section 11 for additional information. MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Pre-existing skin problems may be aggravated by prolonged or repeated contact. 4.3 Indication of immediate medical attention and special treatment needed: Treat symptoms and reduce over -exposure. SECTION 5 - FIRE -FIGHTING MEASURES 5.1 Extinguishing media: Use media suitable for surrounding area. Carbon dioxide, foam, dry chemical, halon, water spray. 5.2 Specific hazards arising from the chemical: No data available for this product. Explosion Sensitivity to Mechanical Impact: Not Sensitive. Explosion Sensitivity to Static Discharge: Not Sensitive Minimum Ignition Energy (M.I.E.) No Data at this time 5.3 Special firefighting Procedure: Incipient fire responders should wear eye protection. Structural firefighters must wear Self -Contained Breathing Apparatus and full protective equipment. Isolate materials not yet involved in the fire and protect personnel. Move containers from fire area if this can be done without risk; otherwise, cool with carefully applied water spray. If possible, prevent runoff water from entering storm drains, bodies of water, or other environmentally sensitive areas. December 2018 Page 2 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer SECTION 6 - ACCIDENTAL RELEASE MEASURES 6.1 Personal precautions, protective equipment and emergency procedures: No action shall be taken involving any personal risk or without suitable training. Do not touch or walk through spilled material. Avoid breathing dust. Provide adequate ventilation. Use appropriate respirator when ventilation is inadequate and use personal protective clothing as described in Section 8 of this safety data sheet. See section 11 for additional information on health hazards. 6.2 Environmental precautions: No specific data available for this product. 6.3 Methods and material for containment and cleaning up: Wear suitable protective clothing. Avoid dust formation. Avoid breathing dust. Carefully sweep up and remove. Place material in a dry container and cover. Remove from the area. Flush spill area with water. Do not let products enter drains. Dispose of in accordance with applicable Federal, State, and local procedures (see Section 13, Disposal Considerations). SECTION 7 - HANDLING and STORAGE 7.1 Precautions for safe handling: As with all chemicals, avoid getting this product ON YOU or IN YOU. Wash thoroughly after handling this product. Do not eat, drink, smoke, or apply cosmetics while handling this product. Use in a well -ventilated location. Remove contaminated clothing immediately 7.2 Conditions for safe storage, including any incompatibilities: Store in a tightly sealed container in a cool, dry and well -ventilated place. Store away from direct light. Avoid generation of dust. Do not breathe dust. Wash thoroughly after handling. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing. Segregate from strong oxidizing agents, acids, bases. 7.3 Specific end uses: See section 1.2. SECTION 8 - EXPOSURE CONTROLS - PERSONAL PROTECTION 8.1. Control parameters: EXPOSURE LIMITS/GUIDELINES: None established for this product. 8.2 Exposure Controls: Currently, International exposure limits are not established for the components of this product. Please check with competent authority in each country for the most recent limits in place. VENTILATION AND ENGINEERING CONTROLS: Generally not required under normal conditions of use. If method of use will result in significant dust generation, use in lab hood or under conditions of adequate ventilation. The following information on appropriate Personal Protective Equipment is provided to assist employers in complying with OSHA regulations found in 29 CFR Subpart I (beginning at 1910.132) or equivalent standard of Canada, or standards of EU member states (including EN 149 for respiratory PPE, and EN 166 for face/eye protection), and those of Japan. Please reference applicable regulations and standards for relevant details. RESPIRATORY PROTECTION: Maintain airborne contaminant concentrations below guidelines listed above, if applicable. If necessary, use only respiratory protection authorized in the U.S. Federal OSHA Respiratory Protection Standard (29 CFR 1910.134), equivalent U.S. State standards, Canadian CSA Standard Z94.4-93, the European Standard EN149, or EU member states. EYE PROTECTION: Safety glasses or chemical goggles as appropriate to prevent eye contact. If necessary, refer to U.S. OSHA 29 CFR 1910.133 or appropriate Canadian Standards. HAND PROTECTION: Use chemical resistant gloves to prevent skin contact. If necessary, refer to U.S. OSHA 29 CFR 1910.138 or appropriate Standards of Canada. BODY PROTECTION: Use body protection appropriate to prevent contact (e.g. lab coat, overalls). If necessary, refer to appropriate Standards of Canada, or appropriate Standards of the EU, Australian Standards, or relevant Japanese Standards. December 2018 Page 3 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer SECTION 9 - PHYSICAL and CHEMICAL PROPERTIES 9.1 Information on basic physical and chemical properties: PHYSICAL STATE: Solid (Granules) APPEARANCE: White to off-white powder or granules ODOR: Odorless ODOR THRESHOLD (PPM): Not Available pH: 6-8 (aqueous solution) MELTING / FREEZING POINT (C°): Not Available BOILING POINT (C°): Not Available FLASH POINT: Not Available EVAPORATION RATE (nBuAc = 1): Not Available FLAMMABILITY (solid, gas): Not Available FLAMMABLE LIMITS (in air by volume, %): Not Available VAPOR PRESSURE (mmHg): Not Available VAPOR DENSITY (AIR=1): Not Available RELATIVE DENSITY 2.4 to 2.6 g/cm3, depending on formulation SOLUBILITY IN WATER (%) Soluble PARTITION COEFFICIENT: N-OCTANOL/WATER: Not Available AUTOIGNITION TEMPERATURE: Not Available DECOMPOSITION TEMPERATURE: Not Available VISCOSITY: Not Available EXPLOSIVE PROPERTIES: Not Available OXIDISING PROPERTIES: Not Available 9.2 Other Information: PACKING DENSITY: VOC: Not Available Not Available SECTION 10 - STABILITY and REACTIVITY 10.1 Reactivity: See section 10.5. 10.2 Chemical Stability: Product is stable. 10.3 Possibility of Hazardous Reactions: Under normal conditions of storage and use, hazardous reactions will not occur. 10.4 Conditions to avoid: Contact with incompatibles, exposure to light, and moist air. 10.5 Incompatible materials: Strong oxidizing agents, bases. 10.6 Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides, sulfur oxides, potassium oxides. SECTION 11 - TOXICOLOGICAL INFORMATION 11.1 Information on Toxicological Effects: TOXICITY DATA: L-Cysteine CAS# 52-90-4 Oral LD50 1890 mg/kg Rat Oral LD50 660 mg/kg Mouse December 2018 Page 4 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer 11.1.2 Mixtures: Acute toxicity Acute Toxicity Category 5 (Oral) Skin corrosion / irritation Based on available data, the classification criteria are not met Serious eye damage / irritation Based on available data, the classification criteria are not met Respiratory or skin sensitization Based on available data, the classification criteria are not met Germ cell mutagenicity Based on available data, the classification criteria are not met Carcinogenicity Based on available data, the classification criteria are not met Reproductive toxicity Based on available data, the classification criteria are not met STOT-single exposure Based on available data, the classification criteria are not met STOT-repeated exposure Based on available data, the classification criteria are not met Aspiration hazard Based on available data, the classification criteria are not met Other Information POTENTIAL HEALTH HAZARDS OR RISKS FROM EXPOSURE: ACUTE: EYE CONTACT: Eye exposure may produce irritation. SKIN CONTACT: Prolonged or repeated skin exposure may cause irritation. INHALATION HAZARDS: Inhalation of dusts may cause irritation. INGESTION HAZARDS: May be harmful if swallowed. May cause gastrointestinal tract irritation. CHRONIC: None Known TARGET ORGANS: ACUTE: Organs CHRONIC: None Known CARCINOGENICITY: None of the ingredients are found on the following lists: FEDERAL OSHA Z LIST, NTP, CAL/OSHA, IARC and therefore are not considered to be, nor suspected to be a cancer -causing agent by these agencies. IRRITANCY OF PRODUCT: Contact with this product can be irritating to skin and eyes. SENSITIZATION OF PRODUCT: This product is not considered a skin sensitizer. REPRODUCTIVE TOXICITY INFORMATION: No information concerning the effects of this product and its components on the human reproductive system. MUTAGENICITY INFORMATION: This product does not contain a component that is suspected to be a mutagenicity hazard. SPECIFIC TARGET ORGAN TOXICITY — SINGLE EXPOSURE: Data not sufficient for classification. SPECIFIC TARGET ORGAN TOXICITY — REPEATED EXPOSURE: Data not sufficient for classification. ASPIRATION HAZARD: Not applicable SECTION 12 - ECOLOGICAL INFORMATION ALL WORK PRACTICES MUST BE AIMED AT ELIMINATING ENVIRONMENTAL CONTAMINATION. 12.1 Toxicity: No specific data available on this product. 12.2 Persistence and Degradability: No specific data available on this product. 12.3 Bioaccumulative Potential: No specific data available on this product. 12.4 Mobility in Soil: No specific data available on this product. 12.5 Results of PBT and vPvB Assessment: No specific data available on this product. 12.6 Other Adverse Effects: No specific data available on this product. 12.7 Water Endangerment Class: Not believed to be water endangering in accordance with EU Guideline 91/155-EWG. At present there are no ecotoxicological assessments for this product. December 2018 Page 5 of 8 K81 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer SECTION 13 - DISPOSAL CONSIDERATIONS 13.1 Waste Treatment Methods: Waste disposal must be in accordance with appropriate Federal, State, and local regulations, those of Canada, Australia, EU Member States and Japan. SECTION 14 - TRANSPORTATION INFORMATION 14.1 Transport Information: US DOT; IATA; IMO; ADR: THIS PRODUCT IS NOT CLASSIFIED AS DANGEROUS GOODS AS DEFINED BY 49 CFR 172.101 BY THE U.S. DEPARTMENT OF TRANSPORTATION. PROPER SHIPPING NAME: None HAZARD CLASS NUMBER and DESCRIPTION: Not Regulated UN IDENTIFICATION NUMBER: None PACKING GROUP: None DOT LABEL(S) REQUIRED: None NORTH AMERICAN EMERGENCY RESPONSE GUIDEBOOK NUMBER (2016): None MARINE POLLUTANT: This product does not contain ingredients that are classified by the DOT as a Marine Pollutant (as defined by 49 CFR 172.101, Appendix B) TRANSPORT CANADA, TRANSPORTATION OF DANGEROUS GOODS REGULATIONS: This product is not classified as Dangerous Goods, per regulations of Transport Canada INTERNATIONAL AIR TRANSPORT ASSOCIATION (IATA): This product is not classified as Dangerous Goods, by rules of IATA: INTERNATIONAL MARITIME ORGANIZATION SHIPPING and MARITIME DANGEROUS GOODS CODE SHIPPING INFORMATION (IMO / IMDG): This product is not classified as Dangerous Goods. EUROPEAN AGREEMENT CONCERNING THE INTERNATIONAL CARRIAGE OF DANGEROUS GOODS BY ROAD (ADR): This product is not classified by the United Nations Economic Commission for Europe to be dangerous goods. SECTION 15 - REGULATORY INFORMATION 15.1 Safety, Health and Environmental Regulations/Legislation Specific for the Substance or Mixture: UNITED STATES REGULATIONS SARA REPORTING REQUIREMENTS: This product is not subject to the reporting requirements of Sections 302, 304 and 313 of Title III of the Superfund Amendments and Reauthorization Act., as follows: None TSCA: All components in this product are listed on the US Toxic Substances Control Act (TSCA) inventory of chemicals. SARA 311/312: Acute Health: No Chronic Health: No Fire: No Reactivity: No U.S. SARA THRESHOLD PLANNING QUANTITY: There are no specific Threshold Planning Quantities for this product. The default Federal SDS submission and inventory requirement filing threshold of 10,000 lb (4,540 kg) may apply, per 40 CFR 370.20. U.S. CERCLA REPORTABLE QUANTITY (RQ): None CALIFORNIA SAFE DRINKING WATER AND TOXIC ENFORCEMENT ACT (PROPOSITION 65): None of the ingredients are on the California Proposition 65 lists. CANADIAN REGULATIONS: CANADIAN DSL/NDSL INVENTORY STATUS:AII of the components of this product are on the DSL Inventory CANADIAN ENVIRONMENTAL PROTECTION ACT (CEPA) PRIORITIES SUBSTANCES LISTS: No component of this product is on the CEPA First Priorities Substance Lists. CANADIAN WHMIS CLASSIFICATION and SYMBOLS: This product is categorized as per WHMIS 2015 Hazardous Product Regulations. December 2018 Page 6 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer EUROPEAN ECONOMIC COMMUNITY INFORMATION: EU LABELING AND CLASSIFICATION: Classification of the mixture according to Regulation (EC) No1272/2008. See section 2 for details. AUSTRALIAN INFORMATION FOR PRODUCT: AUSTRALIAN INVENTORY OF CHEMICAL SUBSTANCES (AICS) STATUS: Components of this product are listed on the AICS. STANDARD FOR THE UNIFORM SCHEDULING OF DRUGS AND POISONS: Not applicable. JAPANESE INFORMATION FOR PRODUCT: JAPAN INDUSTRIAL SAFETY AND HEALTH LAW: This product has been classified per the Japan Industrial Safety and Health Law. See Section 2 for the GHS Classification. KOREA ACT ON REGISTRATION AND EVALUATION OF CHEMICAL SUBSTANCES (K-REACH): This product has been classified per K-REACH. See Section 2 for the GHS Classification. INTERNATIONAL CHEMICAL INVENTORIES: Listing of the components on individual country Chemical Inventories is as follows: Asia-Pac: Listed Australian Inventory of Chemical Substances (AICS): Listed Korean Existing Chemicals List (ECL): Listed Japanese Existing National Inventory of Chemical Substances (ENCS): Listed Philippines Inventory if Chemicals and Chemical Substances (PICCS): Listed Swiss Giftliste List of Toxic Substances: Listed U.S. TSCA: Listed 15.2 Chemical Safety Assessment: A chemical safety assessment has not been performed on this product. SECTION 16 - OTHER INFORMATION HMIS Rating (Scale 0-4) Health hazard: 1 Flammability: 0 Physical Hazard: 0 NFPA Rating (Scale 0-4) Health hazard: 1 Flammability: 0 Physical Hazard: 0 Caution: HMIS and NFPA ratings are based on a 0-4 rating scale 0= Minimal Hazard 1= Slight 2= Moderate 3= High 4= Extreme Abbreviations ACGIH CFR DOT GHS HMIS HCS IARC IATA ICAO IMDG IMO LD50/LC50 NFPA NIOSH and acronyms American Conference of Governmental Industrial Hygienists Code of Federal Regulations Federal Department of Transportation The Globally Harmonized System of Classification and Labelling of Chemicals Hazardous Material Identification System Hazard Communication Standard International Agency for Research on Cancer The International Air Transport Association The International Civil Aviation Organization International Maritime Dangerous Goods International Maritime Organization Lethal Concentration/Dose, 50 percent National Fire Protection Association National Institute for Occupational Safety and Health December 2018 Page 7 of 8 KB-1 PRIMER siremlab.com •• SiREM SAFETY DATA SHEET KB-1® Primer NTP National Toxicology Program OSHA Occupational Safety and Health PEL OSHA Permissible Exposure Limit SARA Superfund Amendments and Reauthorization Act TLV ACGIH Threshold Limit Value TWA Time -Weighted Average Acute Tox Acute Toxicity Skin Corr Skin Corrosion PREPARED BY: Chris Eigbrett MSDS to GHS Compliance History Log: December 05, 2018 - Document creation End of SDS Sheet December 2018 Page 8 of 8 KB-1 PRIMER siremlab.com REDOX TECH, LLC "Providing Innovative In Situ Soil and Groundwater Treatment" Anaerobic BioChem (ABC®) The "Green" Substrate In 2003, Redox Tech introduced its proprietary formulation for anaerobic biodegradation of halogenated solvents in groundwater. The product, Anaerobic Biochem ABC), is a patented mixture of lactates, fatty acids, alcohols and a phosphate buffer. ABC® contains soluble lactic acid as well as slow- and long-term releasing components. Redox Tech was one of the first companies to recognize the importance of maintaining optimum pH, and for that reason, ABC has always had a phosphate buffer and other alkaline materials, when necessary, to maintain the optimal pH. The phosphate buffer provides phosphates, which are a micronutrient for bioremediation. In addition, the buffer helps to maintain the pH in a range that is best suited for microbial growth. Since ABC's introduction, millions of pounds of ABC have been used on hundreds of sites throughout the United States and even Europe. Over time, the "essential ingredients" have been slightly modified, but to our knowledge, ABC remains the only carbon substrate on the crowded market that is formulated specifically for each site's own unique geochemistry, biology, and hydrogeology. "Green" Before Green was Cool Redox Tech is a niche environmental remediation contractor. Therefore, we have always felt obligated to be environmentally conscious. Before "green" was all the rave, Redox Tech utilized waste streams from green energy processes, such as ethanol and biodiesel production to formulate ABC. Only a small percentage of the components are "virgin" chemicals. The phosphate buffer provides phosphates, which are a micronutrient for bioremediation. In addition, the buffer helps to maintain the pH in a range that is best suited for microbial growth. ABC® Advantages • WATER SOLUBLE - the biggest advantage with ABC is that it is completely soluble in water, even the long-lasting carbon. There is no need to emulsify our product, and thus no worry about an emulsion breaking. Also, because it is a water soluble product, the need for large volumes of "chase" water is eliminated. ABC is typically injected at about 15 to 25 weight percent mixed into about 100 to 200 gallons of water. • LONG LASTING — ABC has C14 to C18 fatty acids that have been shown in the field to last over two years. Emulsified oils break down into C18 fatty acids through hydrolysis, so we are essentially using the same long-lived components of emulsified oils without having to emulsify or wait for hydrolysis to occur. • NATURAL CO -SOLVENT — ABC, through a license with Oregon State University, adds ethyl lactate which is a "green" co -solvent. This helps dissolve the fatty acids, and it also serves as a solvent for sites that may have DNAPL, because the ethyl lactate solvates the DNAPL and promotes rapid treatment. • GREEN — ABC is formulated with byproducts from "green" energy processes, so it is better for the environment. • COST -COMPETITIVE — carbon substrates are becoming commodities, and ABC is priced accordingly. When all factors are considered, ABC is a great value. 200 QUADE DRIVE, CARY NC 27513 P. 919.678.0140 F. 919.678.0150 www.redox-tech.com REDOX TECH, LLC "Providing Innovative In Situ Soil and Groundwater Treatment" ABC+ PRODUCT ANNOUNCEMENT Redox Tech, Inc is pleased to offer an enhanced version of our industry proven Anaerobic Biochem (ABC®) formula, promoting both anaerobic biodegradation and reductive dechlorination of halogenated solvents in groundwater. This product, Anaerobic Biochem Plus (ABC+), is a mixture of our ABC® formula and Zero Valent Iron (ZVI). Formulated and mixed on a site -by -site basis, up to fifty percent (50%) by weight of ZVI can be added. ZVI has been proven and widely accepted as an effective in situ remediation technology of chlorinated solvents such as TCA, PCE, TCE, and daughter products. The degradation process using ZVI is an abiotic reductive dechlorination process occurring on the surface of the granular iron, with the iron acting as an electron donor. The addition of ZVI to the ABC® mixture provides a number of advantages for enhanced reductive dechlorination (ERD). The ZVI will provide an immediate reduction. The ABC® will provide short-term and long-term nutrients to anaerobic growth, which also assists to create a reducing environment. ABC® contains soluble lactic acid and a phosphate buffer that provides phosphates, which are a micronutrient for bioremediation, and maintains the pH in a range that is best suited for microbial growth. In addition, the corrosion of iron metal yields ferrous iron and hydrogen, both of which are possible reducing agents. The hydrogen gas produced is also an excellent energy source for a wide variety of anaerobic bacteria. The ABC® and ZVI are mixed with potable water and emplaced in the subsurface simultaneously. The dilution factor (i.e. water content) can be adjusted to achieve optimal dispersion and distribution based on site -specific parameters such as well spacing, permeability of the formation, and contaminant concentrations. The solution can be emplaced by a variety of techniques, including injection through wells or drill rods (for permeable geologic environments such as sands and fractured rock), hydraulic fracturing (for lower permeable environments such as silt and clay), and through soil blending (for all unconsolidated shallow depth applications less than 20 ft bgs). All of these techniques are part of Redox Tech's service offerings. Benefits of ABC include: • The presence of ZVI allows for the rapid and complete dechlorination of target compounds. Degradation rates using ZVI are several orders of magnitude greater than under natural conditions. As a consequence, the process does not result in the formation of daughter products other than ethane, ethane, and methane. • ABC® will last up to 12 months in the subsurface environment due to slow releasing compounds, allowing for long-term anaerobic biodegradation • By creating a reducing environment, ABC has the ability to provide long term immobilization of heavy metals (e.g. Ni, Zn, Hg, As) • Does not require direct contact to act on target constituents. • 'ABC® is protected by US Patents 6,001,252 and 6,472,198. Trademark pending REDOX TECH, LLC "Providing Innovative In Situ Soil and Groundwater Treatment" • Does not divert groundwater flow. ABC is typically mixed at a 15% by weight solution with water. The viscosity of the solution is similar to sugar water and therefore does not measurably influence groundwater flow paths. Due to the relatively low volume of ZVI used, it does not measurably lower the bulk permeability of the formation. • Ease of handling. The ABC product is comprised of food grade compounds and therefore does not require high -levels of personal protective equipment (PPE) or special training to handle. The ZVI is a stable compound that also requires low- level PPE protection. • Patent protection: Redox Tech is licensed under Envirometal Technologies, Inc. (an Adventus Company) who is the current holder of patents pertaining to remediation using ZVI. Therefore, Redox Tech is able to market, sell, and emplace our ABC+ product. There is no patent infringement risk to the client in selecting the ABC approach. • Price advantage. The cost of the ABC formula is an extremely competitive approach in relation to other ERD products on the market. • ABC+ produces a significantly lower redox potential of approximately —600 mV j 400 E. 200 0 a, -200 0 a -400 -600 ce -800 Redox Potential Comparison Treatment Time (days) Control ABC® ABC+® Let Redox Tech help formulate a remedial program for your site today. For more information visit our web page at www.redox-tech.com or contact: John Haselow Redox Tech, LLC 200 Quade Drive Cary, NC 27513 Phone: 919-678-0140 FAX: 919-678-0150 jhaselow@redox-tech.com Redox Tech, LLC REDOX TECH, LLC "Providing Innovative In Situ Soil and Groundwater Treatment" Anaerobic BioChem (ABC) and Fatty Acids ABC® is a patented mixture of carbon substrates that historically included lactates, lactate esters (ethyl lactate), fatty acids, and a phosphate buffer. The lactate components serve as the short-term (more quickly consumed) components and the fatty acids served as long- term releasing components. The phosphate buffer provide phosphates, which are a micronutrient for bioremediation. Also, a proper pH range (5.5 to 8.5) is crucial for complete dechlorination. Redox Tech has always used both water soluble and insoluble oils in ABC®. The insoluble oils were dissolved into ethyl lactate (versus an emulsion). Some of our competitors provide vegetable oil based products. Vegetable oils are predominantly triglycerides. The chemical formula for triglycerides is RCOO-CH2CH(-OOCR')CH2-OOCR", where R, R', and R" are longer alkyl chains. The three fatty acids RCOOH, R'COOH and R"COOH can be all different, all the same, or only two the same. Chain lengths of the fatty acids in naturally occurring triglycerides can be of varying lengths but 16, 18 and 20 carbons are the most common (x, y, and z are the alkyl chain lengths). 0 0 H2 0 0 The name triglyceride come from three fatty acids (blue in figure above) attached to glycerol (red above). In the environment, triglycerides are hydrolyzed to glycerol and three fatty acids. Redox Tech has used C-10 to C-20 fatty acids directly to circumvent the hydrolysis step. This provides a more soluble long lasting carbon source that is more easily distributed in the subsurface environment. 200 QUADE DRIVE CARY NORTH CAROLINA 27513 TEL (919) 678-0140 FAX (919) 678-0150 WWW.REDOX-TECH.COM E-MAIL: HASELOW@REDOX-TECH.COM ABC® Versus Emulsified Oil Redox Tech, LLC Page 2 of 2 In summary, the ABC® produced offers these competitive advantages: • Completely water soluble so no emulsion that can become unstable • Well buffered with micronutrients • Extremely cost-effective (roughly $1 to $1.50 per pound) • Long-lasting because of the long chain fatty acids • Water soluble so it is better distributed upon injection and doesn't require large volumes of "chase" water Please call us today for a free sample, quotation or to order product. Redox Tech can also combine ABC® with zero valent iron (ZVI) to create a powerful chemical and biological reducing environment. Redox Tech, LLC Leading Science •Lasting Solutions KBI Bioaugmentation Culture For bioaugmentation of chlorinated ethene contaminated sites Contact SiREM for a quotation or more information on our line of leading bioaugmentation cultures toll free: 1-866-251-1747 phone: (519) 822-2265 KB-1® is a naturally occurring, non-pathogenic microbial culture that contains Dehalococcoides (Dhc), the only group of microorganisms documented to promote the complete dechlorination of chlorinated ethenes to non -toxic ethene. Although Dhc are found in the environment, research indicates these microorganisms are not ubiquitous and not all Dhc are capable of complete dechlorination of chlorinated ethenes. At sites where Dehalococcoides are absent, tetrachloroethene (PCE) and trichloroethene (TCE) dechlorination typically stalls at cis-1,2-dichloroethene (cDCE), despite ample electron donor availability. KB-1® is used to establish complete dechlorination at sites that do not contain Dhc (or the right Dhc), and to accelerate dechlorination rates to achieve treatment goals. Bioaugmentation of aquifer systems with KB-1® provides an active microbial community capable of complete reductive dechlorination, ensuring that PCE, TCE, cDCE and vinyl chloride (VC) are completely dechlorinated to ethene, without undue acclimation periods, and at rates that are suitable for achieving remedial goals. KB-1® is the most field -demonstrated culture of its type, and its robustness has been demonstrated for both source area and plume remediation in both porous media and fractured bedrock environments. Benefits of KB-1 ° Include: • Low cost: single application • Works with all commonly used electron donors • Natural microbial culture (not genetically modified or engineered) • Certified to be free of known human pathogens • Rigorous quality control procedures ensure each shipment is of the highest quality, stable, safe, effective and free of chlorinated volatile organic compounds • Shipped overnight in specially designed stainless steel vessels that prevent exposure to air and which are safe and easy to handle All KB-1 ® purchases include: • Technical support from an experienced SiREM field technician to support successful application to your site • Complimentary Gene-Trac® Dehalococcoides tests to verify the successful delivery and persistence of KB-1® in site groundwater • KB-1® guarantee - complete dechlorination to ethene* *Some conditions apply siremlab .com KB 1'' us Bioaugmentation Culture Overcome Inhibition at Mixed Chlorinated Solvent Sites toll free: 1-866-251-1747 phone: (519) 822-2265 KB-1® Plus are custom -blended microbial culture formulations for bioaugmentation of sites with inhibitory concentrations of chlorinated ethanes and chlorinated methanes, which are often comingled with chlorinated ethenes. KB-1® Plus has been demonstrated to dechlorinate in excess of 200 milligrams per liter (mg/L) of 1,1,1-trichloroethane (1,1,1-TCA) to chloroethane and carbon tetrachloride, chloroform to dichloromethane (DCM) to non -chlorinated end products. Chloroethane can be further degraded under aerobic conditions. These cultures have been developed by SiREM in collaboration with the University of Toronto1,2 and the United States Geological Survey3. Benefits of KB-1® Plus include: • Overcome inhibition of chloroethene dechlorination caused by 1,1,1-TCA and chloroform • Only a single application required • Works with all commonly used electron donors • Natural microbial culture (not genetically modified) • Pathogen free • Rigorous quality control ensures each shipment is effective, stable and safe • Shipped overnight in specially designed stainless -steel vessels that prevent exposure to air and are safe and easy to handle All KB-1 ® Plus purchases include: • KB-1® Plus Guarantee* • Technical support to ensure a successful application to your site • Complimentary Gene Trace Dehalococcoides and Dehalobacter tests to verify the successful delivery, growth and persistence of KB-1® Plus microbes in site groundwater Contact SiREM for a quotation or more information on our line of leading bioaugmentation products. References 1-Grostern, A. and E. A. Edwards. 2006. Growth of Dehalobacter and Dehalococcoides spp. during Degradation of Chlorinated Ethanes. Appl. Environ. Microbiol. 72: 428-436. 2Grostern, A., M. Duhamel, S. Dworatzek and E. A. Edwards. 2010. Chloroform respiration to dichloromethane by a Dehalobacter population. Environmental Microbiology. 12: 1053-1060. 'Jones E. J. P., M. A. Voytek, M.M. Lorah, J. D. Kirshtein. 2006. Characterization of a Microbial Consortium Capable of Rapid and Simultaneous Dechlorination of 1,1,2,2-Tetrachloroethane and Chlorinated Ethane and Ethene Intermediates. Bioremediation Journal, Volume 10: 153-168. siremlab.com *Some conditions apply plus • KB-1® Plus for Remediation of Low pH Sites SiREM has developed a KB-1® Plus culture acclimated to dechlorinate chlorinated ethenes at lower pH Contact SiREM for a quotation or more information on our line of leading bioaugmentation cultures. toll free: 1-866-251-1747 phone: (519) 822-2265 Bioremediation of chlorinated ethenes (PCE, TCE, cDCE, VC) at low pH presents unique chal- lenges due to the inhibitory effect of acidic conditions in groundwater aquifers. Many sites have an intrinsic pH below the optimum range for dechlorination (pH 6.8-7.8). At pH's below 6.0, slow and incomplete dechlorination is often observed, leading to accumulation of cDCE and VC. More- over, dechlorination and the fermentation of electron donors (both acid producing processes) can further reduce pH to inhibitory conditions. In order to mitigate the effects of lower pH, SiREM has developed a KB-1® Plus culture acclimated to these conditions which demonstrates complete dechlorination at a pH as low as 5.8. This culture exhibits dechlorination rates at pH 6.0 that compare favorably with KB-1® grown at pH 7.0 and may be part of an overall remediation solution, including aquifer buffering, for low pH sites. 0.0140 a 0.0120 0 w 0.0100 0 0 0 0 0 0 0 0 U 0 0 W 0.0080 0.0060 0.0040 0.0020 0.0000 KB-1• pH 7.0 Low pH KB-1• Plus pH 6.0 KB-1. pH 6.0 0 5 Days 10 Performance (ethene production rate) of low pH acclimated KB-1® Plus grown on TCE at pH 6.0 (green) compared to KB-1® at pH 7.0 (blue) and 6.0 (red). The ethene production rate of low pH acclimated KB-1® Plus (green) is 5 times higher than standard KB-1® at pH 6.0 Consider —Low pH Acclimated KB-1® Plus • Where aquifer pH is 5.8-6.3 • In combination with aquifer neutralization to maximize dechlorination performance and/or reduce buffering needs • To maximize performance in poorly buffered aquifers where pH declines are likely due to dechlorination and fermentation of electron donors (both acid producing processes) All KB-1 ® Plus Purchases Include: • KB-1® Plus Guarantee* • Technical support to ensure a successful application at your site • Complimentary Gene-Trac® Tests to verify the successful delivery growth and persistence of KB-1® Plus microbes in site groundwater siremlab.com Contact SiREM for a quotation or more information on our line of leading bioaugmentation products. *some conditions apply KB -I PRIMER Anaerobic Injection Water Preparation Rapidly Prepare Anaerobic Injection Water for Remediation Applications Field technician preparing anaerobic injection water with KB-7° Primer slurry toll free: 1-866-251-1747 phone: (519) 822-2265 KB-1® Primer is used to prepare anaerobic water to disperse electron donors and protect anaerobic bioaugmentation cultures during injection into aquifers. In the past, production of anaerobic water was time consuming, and often produced water with solids that required filtration and that had pH impacts. SiREM has developed KB-1® Primer as an easy to use product to facilitate anaerobic conditions during remediation injections. KB-1® and KB-1® Plus cultures contain microorganisms that promote dechlorination of chlorinated solvents. These cultures are strictly anaerobic, which can present challenges during injection into non -reducing aquifers and when electron donor and bioaugmentation cultures are applied simultaneously. KB-1® Primer does not adversely impact bioaugmentation culture activity or viability. Use KB-1® Primer to: • Rapidly prepare anaerobic water from municipal water supplies • Inject anaerobic bioaugmentation cultures and electron donor simultaneously • Save money on lengthy tank rentals/incubation periods KB-1® Primer: Safe and Simple to Use • Conveniently packaged in foil pouches • Easily dissolved; no need to filter water • Works within hours of application in most water types • Prepare anaerobic water even at low temperatures Anaerobic injection water prepared with KB-1® Primer meets the following criteria: • ORP less than -75 mV • pH between 6 and 8 • provides the conditions to maintain healthy dechlorinating populations KB-7° Primer powder is shipped in vacuum sealed pouches Contact SiREM for more information on KB-1® Primer and our other leading remediation products and testing services. I II siremlab.com Appendix F. Electron Donor Dosing and Injection Volume Calculations Former Schlage Lock Plant Rocky Mount, North Carolina Geosyntec° consultants Geosyntec Consultants of NC, P.C. Treatment Area Treatment Geology Treatment Interval (ft bgs) Number of Location of Injection Injection Points Points Porosity (Equal to Effective Porosity) Target ROI (ft) Injection Location Area z a'(ROI) (ft) Total Injection Interval (feet) Number of 2-ft Injection Intervals Total Injection Area Injection Location Area *Number of Injection Points (ft3) Total Treatment Volume for the Target ROI Total Injection Area `Injection Interval (ft) Treatment Pore Volume Total Treatment Volume`Porosity x 7 481 gaVft3 (gal) Electron Donor Required Based on Treatment Pore Volume Dosing Treatment Pore Volume`Dosing (0.3 Ib/ft3) (Ib) Amendment Volume Electron Donor Required / 60% Electron Donor /Specific Weight of Amendment (Rounded Up to Nearest 10) (gal) ZVI Mass Amendment Volume` Specific Weight ofAmendm Amendment (1:1 by weight electron donor:ZVI) (Ib) Pore Volume Displacement Total Injection Volume (Based on 14-ft ROI) Treatment Pore Volume`Pore Volume Displacement (Round Up to Nearest 1 gal) (gal) Amendmen t Dilution (1:15 or 1:40) Total Diluted Amendment Volume Amendment Volume * Amendment Dilution (gal) Diluted Amendment Concentration Amendment Volume` Specific Weight of Amendment / Total Diluted Amendment Volume (lb/gal) Total Chase Water Volume Total Injection Volume - Total Diluted Amendment Volume (gal) Per Location Per Location Diluted Chase Water Amendment Volume Total Diluted Total Chase Water Amendment Volume/No. of Volume/No. of Inj. Points Inl. Points (Round Up to (Round Up to Nearest 1 gal) Nearest 1 gal) (gal) (gal) Per Injection Per Injection Interval Interval Diluted Chase Water Amendment Volume Total Chase Water Total Diluted Volume/No. Amendment of Inj. Volume/No. of Intervals Inj. Intervals (Round Up (Round Up to to Nearest 1 gal) Nearest eall (gal) (gal) High Concentration Area (HC 1, HC2, HC3, HC4) High Concentration Area - Middle Aquifer - ABC+ (with ZVI) Middle Aquifer 16 to 32 11 HC2 -MW75S 0.25 14 616 16 8 6,773 108,372 202,683 8,129 1,660 13,612 0.17 34,457 15 24,900 0.55 9,557 2,264 869 283 109 16 to 30 4 HC3 - MW78S 0.25 14 616 14 2,463 34,482 64,490 2,587 530 4,346 0.17 10,964 15 7,950 0.55 3,014 1,988 754 284 108 Middle Aquifer Totals (with ZVI) 15 --- --- -- --- --- 116 9,236 142,855 267,174 10,716 2,190 17,958 --- 45,421 --- 32,850 0.55 12,571 -- -- -- -- High Concentration Area - Lower Aquifer- ABC+ (with ZVI) Lower Aquifer 34 to to) I 50 3 HC3 - MW78D 0.25 14 616 16 8 1,847 29,556 55,277 2,217 460 3,772 0.17 9,398 15 6,900 0.55 2,498 2.300 833 288 105 Lower Aquifer Tatas (with ZVI) --- --- -- --- 24 1,847 29,556 55,277 2,217 460 3,772 --- 9,398 --- 6,900 0.55 2,498 -- -- -- High Concentration Area - Middle Aquifer - ABC ONLY Middle Aquifer 18 to 32 4 HC1 - M387768 0.25 14 616 14 7 2,463 34,482 64,490 2,587 530 0 0.35 22,572 40 21,200 0.21 1,372 5,300 343 758 49 14 to 36 2 HC1 - M187768 0.25 14 616 22 11 1,232 27,093 50,671 2,032 420 0 0.35 17,735 40 16,800 0.21 935 8,400 468 764 43 19 to 31 10 HC2 - M187758 0.25 14 616 12 6 6,158 73,890 138,193 5,543 1,130 0 0.35 48,368 40 45,200 0.21 3,168 4,520 317 754 53 22 to 36 4 HC2 - MW758 0.25 14 616 14 7 2,463 34,482 64,490 2,587 530 0 0.35 22,572 40 21,200 0.21 1,372 5,300 343 758 49 21 to 33 5 HC2 -MW758 0.25 14 616 12 6 3,079 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 4,560 277 760 47 18 to 30 6 HC3 - M187788 0.25 14 616 12 6 3,695 44,334 82,916 3,326 680 0 0.35 29,021 40 27,200 0.21 1,821 4,534 304 756 51 17 to 29 5 HC3 - MW78S 0.25 14 616 12 6 3,079 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 4,560 277 760 47 MiddleAqu"erTota (Na ZVI) 36 ___ ___ __ ___ --- 234 22,167 288,172 538,954 21,616 4,430 0 --- 188,636 --- 177,200 0.21 11,436 -- -- -- -- High Concentration Area - Lower Aquifer - ABC ONLY Lower Aquifer 40 to 50 3 HC1 - MW76D 0.25 14 616 10 5 1,847 18,473 34,548 1,386 290 0 0.35 12,092 40 11,600 0.21 492 3,867 164 774 33 38 to 50 3 HC1 - MW76D 0.25 14 616 12 6 1,847 22,167 41,458 1,663 340 0 0.35 14,511 40 13,600 0.21 911 4,534 304 756 51 34 to 50 5 HC3 - M18778D 0.25 14 616 16 8 3,079 49,260 92,129 3,695 760 0 0.35 32,246 40 30,400 0.21 1,846 6,080 370 760 47 26 to 46 3 HC4 - MW30 0.25 14 616 20 10 1,847 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 7,600 462 760 47 Lower Aquifer ata (Na ZVI) 14 ___ ___ __ ___ --- 103 8,621 126,845 237,232 9,515 1,960 0 --- 83,033 --- 78,400 0.21 4,633 -- -- -- -- High Concentration Area Totals 68 - - - - - 477 41,871 587,428 1,098,636 44,063 9,040 21,730 - 326,488 - 295,350 - 31,138 -- - - - Treatment Area Treatment Geology Treatment IntervalNumber (ft bgs) Number of Location of Injection Injection Points Points Porosity (Equal to Effective Porosity) Target Width (14-[t ROI a2) (ft) Target Length (ft) Total Injection Interval (feet) Number of 2-ft Injection Intervals Total Target Area Target Width' Target Length (ft3) Total T reatment Volume for the Target Area Total Target Area ' Injection Interval (ft) Treatment Pore Volume Total Treatment Volume' Porosity * 7.481 gaVft3 (gal) Electron Donor Required Based on Treatment Pore Volume Dosing Treatment Pore Volume' Dosing (0.3 Ib/ft3) (Ib) Amendment Volume Electron Donor Required / 60% Electron Donor /Specific Weight of Amendment (Rounded Up to Nearest 10) (gal) ZVI Mass Amendment Volume` Specific Weight of Amendment (Ib) Pore Volume Displacement Total Injection Volume (Based on 14-ft ROI) zt`(ROI)z' Total Injection Interval' of Injection Points` Porosity' 7.481 gal/ft `Pore Volume Displacement (Round Up to Nearest 1 gal) (gal) Amendmen tDilution (1:40) Total Diluted Amendment Volume Amendment Volume Amendment Dilution (gal) Diluted Amendment Concentration Amendment Volume` Specific Weight of Amendment / Total Diluted Amendment Volume (Ib/gal) Total Chase Water Volume Total Injection Volume - Total Diluted Amendment Volume (gal) Per Location Per Location Diluted Chase Water Amendment Volume Total Diluted Total Chase Water Amendment Volume/No. of Volume/No. of Inj. Points Inj. Points ts (Round Up to (Round Up to Nearestl al Nearest 1 gal) gal) (gal) (gal) Per Injection Per Injection Interval Interval Diluted Chase Water Amendment Volume Total Chase Water Total Diluted Volume / No. Amendment Volume/No. of of lnl. Intervals Inj. (Round Up (Round Up to to Nearest 1 gal) Nearest 1 gal) (gal) (gal) Downgradient Area (DG1, DG2, DG3) Downgradient Area - Middle Aquifer - ABC ONLY Middle Aquifer 12 to 22 13 DG1 - MW37 0.25 28 353 10 5 9,884 98,840 184,856 7,414 1,510 0 0.45 67,370 40 60,400 0.21 6,970 4,647 537 930 108 12 to 24 1 DG1 - MW37 0.25 28 27 12 6 756 9,072 16,967 680 140 0 0.45 6,219 40 5,600 0.21 619 5,600 619 934 104 Middle Aquff'er Totals 14 --- --- -- --- --- 71 10,640 107,912 201,822 8,094 1,650 0 --- 73,589 --- 66,000 0.21 7,589 -- -- -- Downgradient Area - Lower Aquifer - ABC ONLY Lower Aquifer 25 to 41 4 DG1 - MW47D 0.25 28 110 16 8 3,080 49,280 92,166 3,696 760 0 0.45 33,167 40 30,400 0.21 2,767 7,600 692 950 87 35 to 45 4 DG2 - MW74D 0.25 28 110 10 5 3,080 30,800 57,604 2,310 470 0 0.45 20,729 40 18,800 0.21 1,929 4,700 483 940 97 38 to 50 DG3 - North of 9 MW70D 0.25 28 249 12 6 6,972 83,664 156,473 6,276 1,280 0 0.45 55,969 40 51,200 0.21 4,769 5,689 530 949 89 40 to 50 3 DG3 - around MW70D 0.25 28 81 10 5 2,268 22,680 42,417 1,701 350 0 0.45 15,547 40 14,000 0.21 1,547 4,667 516 934 104 LawerAqu"er Totals 20 --- --- -- --- --- 121 15,400 186,424 348,659 13,984 2,860 0 --- 125,412 --- 114,400 0.21 11,012 -- -- -- UowngradzentArea Totals 34 - - -- ___ - 192 26,040 294,336 550,482 22,078 4,510 0 --- 199,001 - 180,400 - 18,601 - - -- - Total Injection Amounts 102 - - -- --- --- 669 67,911 881,764 1,649,118 66,141 13,550 21,730 --- 525,489 --- 475,750 -- 49,739 -- - -- -- Notes: 1. ft bgs indicates feet below land surface. 2. zt indicates 3.14159265359. 3. ROI indicates radius of influence. 4. ftz indicates square feet. 5. 113 indicates cubic feet. 6. gal indicates gallons. 7. Ib indicates pound. 8. ROI indicates radius of influence. 9. ZVI indicates zero valent iron. 10. Injection calculations are divided into two areas, based on how the Total Treatment Volume was calculated (High Concentration Area and Downgradient Area). Page 1 of 2 Appendix F. KB-1® Bioaugmentation Dosing Former Schlage Lock Plant Rocky Mount, North Carolina Variable Value Unit/Notes Treatment Pore Volume 1,649,118 Gallon (gal) 6,242,572 Liter (L; 3.8754 L per gal) KB-1® Dosing 0.00005 Liter of KB-1® per Liter pore volume (1 L of KB-1 per 20,000 L of groundwater) KB-1® Volume for Pore Volume 313 L Middle Aquifer: High Concentration 806,127 gal 3,051,514 Liter (3.8754 L per gal) 153 KB-1 Requirement (rounded up to nearest whole number) 350 Total Injection Intervals 0.437 Liter of KB-1 per injection interval (rounded to nearest 0.001) 0.45 KB-1 (L) per injection interval (rounded up to nearest 0.05) 157.50 Total KB-1 (L) to Inject Middle Aquifer: Downgradient 201,822 gal 763,979 Liter (3.8754 L per gal) 39 KB-1 Requirement (rounded up to nearest whole number) 71 Total Injection Intervals 0.549 Liter of KB-1 per injection interval (rounded to nearest 0.001) 0.55 KB-1 (L) per injection interval (rounded up to nearest 0.05) 39.05 Total KB-1 (L) to Inject Lower Aquifer: High Concentration 292,509 gal 1,107,264 Liter (3.8754 L per gal) 56 KB-1 Requirement (rounded up to nearest whole number) 127 Total Injection Intervals 0.441 Liter of KB-1 per injection interval (rounded to nearest 0.001) 0.45 KB-1 (L) per injection interval (rounded up to nearest 0.05) 57.15 Total KB-1 (L) to Inject Lower Aquifer: Downgradient 348,659 gal 1,319,816 Liter (3.8754 L per gal) 66 KB-1 Requirement (rounded up to nearest whole number) 121 Total Injection Intervals 0.545 Liter of KB-1 per injection interval (rounded to nearest 0.001) 0.55 KB-1 (L) per injection interval (rounded up to nearest 0.05) 66.55 Total KB-1 (L) to Inject Total KB-1 Volume 320.25 Sum of individual KB-1 volumes (L) for each aquifer and aquifer area. Page 2 of 2 4. INJECTION PROCEDURE — Per 15A NCAC 02C .0225(0(71. submit a table with a detailed description of the proposed injection procedure that includes the following: (A) The proposed average and maximum daily rate and quantity of injectant; (B) The average maximum injection pressure expressed in units of pounds per square inch (psi); and (C) The total or estimated total volume to be injected. A Injection Timelines — Proposed Inj. Rate Injection Locations Operating at Once Injection Gal per Day Average DPT - ABC+ 7.8 1 2,800 DPT - ABC 4 6 8,640 Injection Timelines — Proposed Inj. Rate Injection Locations Operating at Once Injection Gal per Day Maximum DPT - ABC+ 15 1 5,400 DPT - ABC 10 10 36,000 Refer to the attached Appendix F. Electron Donor Dosing and Injection Volume Calculations (Geosyntec, 2021b) for injection volume details. Proposed maximum rates are not anticipated to be implemented at all active injection locations; however, historical injection information indicated injection rates above 10 gallons per minute are possible. A process flow diagram (PFD) for the ABC and ABC+ injection process is provided on the attached Figures 8 and 9 (Geosyntec, 2021b). All injections will occur from the bottom up. (B) Injection pressure: 5-100 psi (based on historical injection information) (C) Up to 550,000 gal (Refer to the attached Appendix F. Electron Donor Dosing and Injection Volume Calculations (Geosyntec, 2021b) for design injection volume) Appendix F. Electron Donor Dosing and Injection Volume Calculations Former Schlage Lock Plant Rocky Mount, North Carolina Geosyntec° consultants Geosyntec Consultants of NC, P.C. Treatment Area Treatment Geology Treatment Interval (ft bgs) Number of Location of Injection Injection Points Points Porosity (Equal to Effective Porosity) Target ROI (ft) Injection Location Area z a'(ROI) (ft) Total Injection Interval (feet) Number of 2-ft Injection Intervals Total Injection Area Injection Location Area *Number of Injection Points (ft3) Total Treatment Volume for the Target ROI Total Injection Area `Injection Interval (ft) Treatment Pore Volume Total Treatment Volume`Porosity x 7 481 gaVft3 (gal) Electron Donor Required Based on Treatment Pore Volume Dosing Treatment Pore Volume`Dosing (0.3 Ib/ft3) (Ib) Amendment Volume Electron Donor Required / 60% Electron Donor /Specific Weight of Amendment (Rounded Up to Nearest 10) (gal) ZVI Mass Amendment Volume` Specific Weight ofAmendm Amendment (1:1 by weight electron donor:ZVI) (Ib) Pore Volume Displacement Total Injection Volume (Based on 14-ft ROI) Treatment Pore Volume`Pore Volume Displacement (Round Up to Nearest 1 gal) (gal) Amendmen t Dilution (1:15 or 1:40) Total Diluted Amendment Volume Amendment Volume * Amendment Dilution (gal) Diluted Amendment Concentration Amendment Volume` Specific Weight of Amendment / Total Diluted Amendment Volume (lb/gal) Total Chase Water Volume Total Injection Volume - Total Diluted Amendment Volume (gal) Per Location Per Location Diluted Chase Water Amendment Volume Total Diluted Total Chase Water Amendment Volume/No. of Volume/No. of Inj. Points Inl. Points (Round Up to (Round Up to Nearest 1 gal) Nearest 1 gal) (gal) (gal) Per Injection Per Injection Interval Interval Diluted Chase Water Amendment Volume Total Chase Water Total Diluted Volume/No. Amendment of Inj. Volume/No. of Intervals Inj. Intervals (Round Up (Round Up to to Nearest 1 gal) Nearest eall (gal) (gal) High Concentration Area (HC 1, HC2, HC3, HC4) High Concentration Area - Middle Aquifer - ABC+ (with ZVI) Middle Aquifer 16 to 32 11 HC2 -MW75S 0.25 14 616 16 8 6,773 108,372 202,683 8,129 1,660 13,612 0.17 34,457 15 24,900 0.55 9,557 2,264 869 283 109 16 to 30 4 HC3 - MW78S 0.25 14 616 14 2,463 34,482 64,490 2,587 530 4,346 0.17 10,964 15 7,950 0.55 3,014 1,988 754 284 108 Middle Aquifer Totals (with ZVI) 15 --- --- -- --- --- 116 9,236 142,855 267,174 10,716 2,190 17,958 --- 45,421 --- 32,850 0.55 12,571 -- -- -- -- High Concentration Area - Lower Aquifer- ABC+ (with ZVI) Lower Aquifer 34 to to) I 50 3 HC3 - MW78D 0.25 14 616 16 8 1,847 29,556 55,277 2,217 460 3,772 0.17 9,398 15 6,900 0.55 2,498 2.300 833 288 105 Lower Aquifer Tatas (with ZVI) --- --- -- --- 24 1,847 29,556 55,277 2,217 460 3,772 --- 9,398 --- 6,900 0.55 2,498 -- -- -- High Concentration Area - Middle Aquifer - ABC ONLY Middle Aquifer 18 to 32 4 HC1 - M387768 0.25 14 616 14 7 2,463 34,482 64,490 2,587 530 0 0.35 22,572 40 21,200 0.21 1,372 5,300 343 758 49 14 to 36 2 HC1 - M187768 0.25 14 616 22 11 1,232 27,093 50,671 2,032 420 0 0.35 17,735 40 16,800 0.21 935 8,400 468 764 43 19 to 31 10 HC2 - M187758 0.25 14 616 12 6 6,158 73,890 138,193 5,543 1,130 0 0.35 48,368 40 45,200 0.21 3,168 4,520 317 754 53 22 to 36 4 HC2 - MW758 0.25 14 616 14 7 2,463 34,482 64,490 2,587 530 0 0.35 22,572 40 21,200 0.21 1,372 5,300 343 758 49 21 to 33 5 HC2 -MW758 0.25 14 616 12 6 3,079 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 4,560 277 760 47 18 to 30 6 HC3 - M187788 0.25 14 616 12 6 3,695 44,334 82,916 3,326 680 0 0.35 29,021 40 27,200 0.21 1,821 4,534 304 756 51 17 to 29 5 HC3 - MW78S 0.25 14 616 12 6 3,079 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 4,560 277 760 47 MiddleAqu"erTota (Na ZVI) 36 ___ ___ __ ___ --- 234 22,167 288,172 538,954 21,616 4,430 0 --- 188,636 --- 177,200 0.21 11,436 -- -- -- -- High Concentration Area - Lower Aquifer - ABC ONLY Lower Aquifer 40 to 50 3 HC1 - MW76D 0.25 14 616 10 5 1,847 18,473 34,548 1,386 290 0 0.35 12,092 40 11,600 0.21 492 3,867 164 774 33 38 to 50 3 HC1 - MW76D 0.25 14 616 12 6 1,847 22,167 41,458 1,663 340 0 0.35 14,511 40 13,600 0.21 911 4,534 304 756 51 34 to 50 5 HC3 - M18778D 0.25 14 616 16 8 3,079 49,260 92,129 3,695 760 0 0.35 32,246 40 30,400 0.21 1,846 6,080 370 760 47 26 to 46 3 HC4 - MW30 0.25 14 616 20 10 1,847 36,945 69,097 2,771 570 0 0.35 24,184 40 22,800 0.21 1,384 7,600 462 760 47 Lower Aquifer ata (Na ZVI) 14 ___ ___ __ ___ --- 103 8,621 126,845 237,232 9,515 1,960 0 --- 83,033 --- 78,400 0.21 4,633 -- -- -- -- High Concentration Area Totals 68 - - - - - 477 41,871 587,428 1,098,636 44,063 9,040 21,730 - 326,488 - 295,350 - 31,138 -- - - - Treatment Area Treatment Geology Treatment IntervalNumber (ft bgs) Number of Location of Injection Injection Points Points Porosity (Equal to Effective Porosity) Target Width (14-[t ROI a2) (ft) Target Length (ft) Total Injection Interval (feet) Number of 2-ft Injection Intervals Total Target Area Target Width' Target Length (ft3) Total T reatment Volume for the Target Area Total Target Area ' Injection Interval (ft) Treatment Pore Volume Total Treatment Volume' Porosity * 7.481 gaVft3 (gal) Electron Donor Required Based on Treatment Pore Volume Dosing Treatment Pore Volume' Dosing (0.3 Ib/ft3) (Ib) Amendment Volume Electron Donor Required / 60% Electron Donor /Specific Weight of Amendment (Rounded Up to Nearest 10) (gal) ZVI Mass Amendment Volume` Specific Weight of Amendment (Ib) Pore Volume Displacement Total Injection Volume (Based on 14-ft ROI) zt`(ROI)z' Total Injection Interval' of Injection Points` Porosity' 7.481 gal/ft `Pore Volume Displacement (Round Up to Nearest 1 gal) (gal) Amendmen tDilution (1:40) Total Diluted Amendment Volume Amendment Volume Amendment Dilution (gal) Diluted Amendment Concentration Amendment Volume` Specific Weight of Amendment / Total Diluted Amendment Volume (Ib/gal) Total Chase Water Volume Total Injection Volume - Total Diluted Amendment Volume (gal) Per Location Per Location Diluted Chase Water Amendment Volume Total Diluted Total Chase Water Amendment Volume/No. of Volume/No. of Inj. Points Inj. Points ts (Round Up to (Round Up to Nearestl al Nearest 1 gal) gal) (gal) (gal) Per Injection Per Injection Interval Interval Diluted Chase Water Amendment Volume Total Chase Water Total Diluted Volume / No. Amendment Volume/No. of of lnl. Intervals Inj. (Round Up (Round Up to to Nearest 1 gal) Nearest 1 gal) (gal) (gal) Downgradient Area (DG1, DG2, DG3) Downgradient Area - Middle Aquifer - ABC ONLY Middle Aquifer 12 to 22 13 DG1 - MW37 0.25 28 353 10 5 9,884 98,840 184,856 7,414 1,510 0 0.45 67,370 40 60,400 0.21 6,970 4,647 537 930 108 12 to 24 1 DG1 - MW37 0.25 28 27 12 6 756 9,072 16,967 680 140 0 0.45 6,219 40 5,600 0.21 619 5,600 619 934 104 Middle Aquff'er Totals 14 --- --- -- --- --- 71 10,640 107,912 201,822 8,094 1,650 0 --- 73,589 --- 66,000 0.21 7,589 -- -- -- Downgradient Area - Lower Aquifer - ABC ONLY Lower Aquifer 25 to 41 4 DG1 - MW47D 0.25 28 110 16 8 3,080 49,280 92,166 3,696 760 0 0.45 33,167 40 30,400 0.21 2,767 7,600 692 950 87 35 to 45 4 DG2 - MW74D 0.25 28 110 10 5 3,080 30,800 57,604 2,310 470 0 0.45 20,729 40 18,800 0.21 1,929 4,700 483 940 97 38 to 50 DG3 - North of 9 MW70D 0.25 28 249 12 6 6,972 83,664 156,473 6,276 1,280 0 0.45 55,969 40 51,200 0.21 4,769 5,689 530 949 89 40 to 50 3 DG3 - around MW70D 0.25 28 81 10 5 2,268 22,680 42,417 1,701 350 0 0.45 15,547 40 14,000 0.21 1,547 4,667 516 934 104 LawerAqu"er Totals 20 --- --- -- --- --- 121 15,400 186,424 348,659 13,984 2,860 0 --- 125,412 --- 114,400 0.21 11,012 -- -- -- UowngradzentArea Totals 34 - - -- ___ - 192 26,040 294,336 550,482 22,078 4,510 0 --- 199,001 - 180,400 - 18,601 - - -- - Total Injection Amounts 102 - - -- --- --- 669 67,911 881,764 1,649,118 66,141 13,550 21,730 --- 525,489 --- 475,750 -- 49,739 -- - -- -- Notes: 1. ft bgs indicates feet below land surface. 2. zt indicates 3.14159265359. 3. ROI indicates radius of influence. 4. ftz indicates square feet. 5. 113 indicates cubic feet. 6. gal indicates gallons. 7. Ib indicates pound. 8. ROI indicates radius of influence. 9. ZVI indicates zero valent iron. 10. Injection calculations are divided into two areas, based on how the Total Treatment Volume was calculated (High Concentration Area and Downgradient Area). Page 1 of 1 L:\CADD\M\MISC\ALLEGION\FIGURE 6 - INJECTION SCHEMATIC - Last Saved by: jcureton on 2/18/21 (55-GALLON DRUM (TYP) EDUCTOR / MIXER (OPTIONAL) POTABLE WATER SOURCE (E.G. FIRE HYDRANT) • FLOW >4 CENTRIFUGAL TOTALIZER INJECTION PUMP (TYP) (TYP) n ELECTRON TRANSFER FLOW DONOR - ABC PUMP (TYP) TOTALIZER OR EQUIVALENT) PUMP LEGEND (TYP) A ELECTRON DONOR MIXING TANK (>1,000 GALLON) x >4 PUMP (TYP) EDUCTOR / MIXER (OPTIONAL) COMPATIBLE PIPING / FLEXIBLE HOSE MAIN INJECTION PATH RECIRCULATION PATH >a GATE VALVE n ANAEROBIC CHASE WATER TANK (>1,500 GALLON) NOTE: GATE VALVE INJECTION (TYP) MANIFOLD FLOW METER (TYP) 4" PRESSURE RATED FLEXIBLE HOSE (OR EQUIVALENT) DPT INJECTION POINT (2-FOOT INJECTION INTERVAL) KB-1 - MICROBIAL �- CULTURE INJECTION 1 L J,L J L -4- _I A_ J,t WIC =7C= WIC =7CE7CE 1. A MIXING PADDLE CAN BE USED IN PLACE OF THE RECIRCULATION MIXING, IF DESIRED. INERT GAS FLOW METER (TYP) GATE VALVE (TYP) DPT INJECTION POINT AREA OF INFLUENCE BIOREMEDIATION DPT INJECTION PROCESS FLOW DIAGRAM - ABC FORMER SCHLAGE LOCK FACILITY 213 RED IRON ROAD ROCKY MOUNT, NORTH CAROLINA Geosyntec consultants of NC, P.C. RALEIGH, NC I APRIL 2021 FIGURE 8 L:\CADD\M\MISC\ALLEGION\FIGURE 7 - INJECTION SCHEMATIC - Last Saved by: jcureton on 2/18/21 POTABLE WATER SOURCE (E.G. FIRE HYDRANT) ELECTRON TRANSFER DONOR - ABC PUMP (TYP) (55-GALLON DRUM OR EQUIVALENT) ZERO VALENT IRON (ZVI) FLOW TOTALIZER (TYP) ► FLOW TOTALIZER (TYP) n PUMP ♦ (TYP) ELECTRON DONOR/ZVI SLURRY MIXING TANK (TYP) (>1,000 GALLON) D4 GUAR EDUCTOR / MIXER (OPTIONAL) LEGEND COMPATIBLE PIPING / FLEXIBLE HOSE MAIN INJECTION PATH RECIRCULATION PATH Da GATE VALVE EDUCATOR/MIXER FOR SLURRY SUSPENSION GATE VALVE (TYP) FLOW METER (TYP) ANAEROBIC CHASE WATER TANK (>1,500 GALLON) 4" PRESSURE RATED FLEXIBLE HOSE (OR EQUIVALENT) DPT INJECTION POINT (2-FOOT INJECTION INTERVAL) NOTE: 1. A MIXING PADDLE CAN BE USED IN PLACE OF THE RECIRCULATION MIXING, IF DESIRED. KB-1 - MICROBIAL CULTURE INJECTION INERT GAS FLOW METER (TYP) GATE VALVE (TYP) DPT INJECTION POINT AREA OF INFLUENCE BIOREMEDIATION DPT INJECTION PROCESS FLOW DIAGRAM - ABC + FORMER SCHLAGE LOCK FACILITY 213 RED IRON ROAD ROCKY MOUNT, NORTH CAROLINA Geosyntec consultants of NC, P.C. RALEIGH, NC I APRIL 2021 FIGURE 9 5. FRACTURING PLAN (if applicable) — Per 15A NCAC 02C .0225(f)(9), submit a detailed description of the fracturing plan that includes the following: (A) Material Safety Data Sheets of fracturing media including information on any proppants used; (B) a map of fracturing well locations relative to the known extent of groundwater contamination plus all buildings, wells, septic systems, underground storage tanks, and underground utilities located within the Area of Review; (C) a demonstration that buildings, wells, septic systems, underground storage tanks, and underground utilities will not be adversely affected by the fracturing process; (D) injection rate and volume; (E) orientation of bedding planes, joints, and fracture sets of the fracture zone; (F) performance monitoring plan for determining the fracture well radius of influence; and (G) if conducted, the results of geophysical testing or pilot test of fracture behavior conducted in an uncontaminated area of the site. N/A/ Fracturing will not be used. 6. WELL CONSTRUCTION DETAILS — Per 15A NCAC 02C .0225(f)(10), submit the following information in tabular or schematic form as appropriate for each item: (A) number and depth of injection wells; (B) number and depth of borings if using multi -level or "nested" well systems; (C) indication whether the injection wells are existing or proposed; (D) depth and type of casing; (E) depth and type of screen material; (F) depth and type of grout; (G) indication whether the injection wells are permanent or temporary "direct push" points; and (H) plans and specifications of the surface and subsurface construction details. (A) See the injection interval tables (Tables 3 and 4) attached (Geosyntec, 2021b). (B) N/A (C) N/A (D) N/A (E) N/A (F) N/A (G) Temporary "direct push" points (H) N/A Table 3. Injection Location Coordinates and Injection Intervals Allegion Rocky Mount Rocky Mount, North Carolina Injection Area DPT Injection Location ID Easting Northing Target Aquifer(s) ZVI? Injection Interval (ft BLS) Monitoring Well(s) Used for Design Primary PCE Concentration(s) hug/I) Notes High Concentration Injection Locations High Concentration Area 1 (HC1) HC1-01 -77.7670838 36.0240326 Middle/Lower 18 to 32 / 40 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-02 -77.7671612 36.0240464 Middle / Lower 18 to 32 / 38 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-03 -77.7672327 36.0240650 Middle / Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-04 -77.7673140 36.0240830 Middle/Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-05 -77.7673094 36.0240141 Middle / Lower 14 to 36 / 40 to 50 MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections HC1-06 77.7672205 36.0240021 Middle /Lower MW-76S 5,630 Same borehole will be used for middle and lower aquifer injections High Concentration Areal (HC2) HC2-01 -- -- Middle ✓ 16 to 32 MW-75S 103,000 HC2-02 -- -- Middle ✓ MW-75S 103,000 HC2-03 -- -- Middle ✓ MW-75S 103,000 HC2-04 -- -- Middle ✓ MW-75S 103,000 HC2-05 -- -- Middle ✓ MW-75S 103,000 HC2-06 -- -- Middle I. MW-75S 103,000 HC2-07 -- -- Middle ✓ MW-75S 103,000 HC2-08 -- -- Middle ✓ MW-75S 103,000 HC2-09 -- -- Middle ✓ MW-75S 103,000 HC2-10 -- -- Middle ✓ MW-75S 103,000 HC2-11 -- -- Middle ✓ MW-75S 103,000 HC2-12 -- -- Middle 19 to 31 MW-75S 103,000 HC2-13 -- -- Middle MW-75S 103,000 HC2-14 -- -- Middle MW-75S 103,000 HC2-15 -- -- Middle MW-75S 103,000 HC2-16 -- -- Middle 22 to 36 MW-22 6,550 HC2-17 Middle MW-22 6,550 HC2-18 -- -- Middle MW-22 6,550 HC2-19 -- -- Middle MW-75S 103,000 HC2-20 -- -- Middle 21 to 33 MW-75S 103,000 HC2-21 -- -- Middle MW-75S 103,000 HC2-22 -- -- Middle MW-75S 103,000 HC2-23 -- -- Middle MW-76S 5,630 HC2-24 -- -- Middle MW-76S 5,630 HC2-25 -- -- Middle 19 to 31 MW-76S 5,630 HC2-26 -- -- Middle MW-75S 103,000 HC2-27 -- -- Middle MW-75S 103,000 HC2-28 -- -- Middle MW-75S 103,000 HC2-29 -- -- Middle MW-75S 103,000 HC2-30 -- -- Middle MW-75S 103,000 High Concentration Area 3 (HC3) HC3-01* -77.7655747 36.0236406 Middle I. 16 to 30 MW-78S 22,800 HC3-01 * -77.7655747 36.0236406 Lower 34 to 50 MW-78D 8,900 Injection point will be offset 1 to 2 feet from middle aquifer injection location. HC3-02 -77.7656551 36.0236674 Middle / Lower I.MW-78S 16 to 30 / 34 to 50 / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-03 -77.7657350 36.0236360 Middle / Lower I. MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-04 -77.7656537 36.0236086 Middle / Lower I.MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-05 -77.7655734 36.0235710 Middle 18 to 30 MW-78S 22,800 HC3-06 -77.7656607 36.0235482 Middle MW-78S 22,800 HC3-07 -77.7657454 36.0235680 Middle / Lower 18 to 30 / 34 to 50 MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-08 -77.7658235 36.0236115 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-09 -77.7657987 36.0236806 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-10 -77.7657210 36.0237116 Middle / Lower MW-78S / MW-78D 22,800 / 8,900 Same borehole will be used for middle and lower aquifer injections HC3-11 -77.7655856 36.0237123 Middle 17 to 29 MW-78S 22,800 HC3-12 -77.7655090 36.0236843 Middle MW-78S 22,800 HC3-13 -77.7654961 36.0236153 Middle MW-78S 22,800 HC3-14 -77.7654151 36.0236147 Middle MW-58S 5,400 HC3-15 -77.7654300 36.0236740 Middle MW-58S 5,400 High Concentration Area 4 HC4-01 -77.7658692 36.0247176 Lower 26 to 46 MW-30 3,260 HC4-02 -77.7659367 36.0246782 Lower MW-30 3,260 HC4-03 -77.7660249 36.0246705 Lower MW-30 3,260 Downgradient Injection Locations Downgradient Area 1 (DG1) DG1-01 -77.7670522 36.0261431 Middle 12 to 22 MW-37S 474 DG1-02 -77.7669615 36.0261376 Middle MW-37S 474 DG1-03 -77.7668709 36.0261305 Middle 12 to 22 MW-37S 474 DG1-04 -77.7667794 36.0261235 Middle MW-37S 474 DG1-05 -77.7666897 36.0261167 Middle 12 to 24 MW-37S 474 DG1-06 -77.7665991 36.0261102 Middle / Lower 12 to 22 / 25 to 41 MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-07 -77.7665085 36.0261034 Middle / Lower MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-08 -77.7664170 36.0260972 Middle / Lower MW-37S / MW 47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-09 -77.7663275 36.0260900 Middle / Lower MW-37S / MW-47D 474 / 99.7 Same borehole will be used for middle and lower aquifer injections DG1-10 -77.7662363 36.0260834 Middle 12 to 22 MW-375 474 DG1-11 -77.7661460 36.0260770 Middle MW-375 474 DG1-12 -77.7660554 36.0260711 Middle MW-375 474 DG1-13 -77.7659645 36.0260639 Middle MW-375 474 DG1-14 -77.7658736 36.0260578 Middle MW-375 474 Downgradient Area 2 (DG2) DG2-01 -77.7677847 36.0261130 Lower 35 to 45 MW-74D 86.6 DG2-02 -77.7677117 36.0261572 Lower MW-74D 86.6 DG2-03 -77.7676389 36.0262016 Lower MW-74D 86.6 DG2-04 -77.7675651 36.0262460 Lower M8T-74D 86.6 Downgradient Area 3 (DG3) DG3-01 -77.7674031 36.0250133 Lower 38 to 50 M8T-41DDR 377 DG3-02 -77.7674787 36.0249712 Lower MW-41DDR 377 DG3-03 -77.7675542 36.0249275 Lower M8T-41DDR 377 DG3-04 -77.7676292 36.0248860 Lower M8T-41DDR 377 DG3-05 -77.7677045 36.0248436 Lower MW-41DDR 377 DG3-06 -77.7677786 36.0248015 Lower MW-41DDR 377 DG3-07 -77.7679308 36.0247159 Lower MW-41DDR 377 DG3-08 -77.7678559 36.0247572 Lower M8T-41DDR 377 DG3-09 -77.7680059 36.0246719 Lower MW-70D 172 DG3-10 -77.7680814 36.0246306 Lower 40 to 50 MW-70D 172 DG3-11 -77.7681559 36.0245881 Lower MW-70D 172 DG3-12 -77.7682308 36.0245456 Lower MW-70D 172 Notes: 1. ft BLS indicates feet below land surface. 2. DPT indicates direct push technology. 3. PCE indicates tetrachloroethene. 4. µg/L indicates micrograms per liter. 5. ✓ indicates zero-valent iron (ZVI) is included at the location. No fill indicates ZVI will not be included. 6. * indicates that the injection location will be comprised of two injection locations, offset 1 to 2 feet from each other. 7. Primary PCE Concentration(s) provides the most recent PCE sampling result (as of February 2021) for the monitoring well(s) used for design. 8. -- indicates not applicable. Sample location is located inside building. 9. All locations will be confirmed in the field, based on nearby monitoring wells. Table 4. Injection Location Volumes Allegion Rocky Mount Rocky Mount, North Carolina ABC+®Amendment Injection Locations (includes ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration Area - 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer HC2 HC2-01, HC2-02, HC2-03, HC2-04, HC2-05, HC2-06, HC2-07, HC2-08, HC2-09, HC2-10, HC2-11 16 to 32 16 to 18 14 283 109 0.45 2,264 872 3.60 18 to 20 14 283 109 0.45 20 to 22 14 283 109 0.45 22 to 24 14 283 109 0.45 24 to 26 14 283 109 0.45 26 to 28 14 283 109 0.45 28 to 30 14 283 109 0.45 30 to 32 14 283 109 0.45 HC3 HC3-01, HC3-02, HC3-03, HC3-04 16 to 30 16 to 18 14 284 108 0.45 1,988 756 3.15 18 to 20 14 284 108 0.45 20 to 22 14 284 108 0.45 22 to 24 14 284 108 0.45 24 to 26 14 284 108 0.45 26 to 28 14 284 108 0.45 28 to 30 14 284 108 0.45 Lower Aquifer HC3 HC3-02, HC3-03, HC3-04 34 to 50 34 to 36 14 288 105 0.45 2.304 840 3.60 36 to 38 14 288 105 0.45 38 to 40 14 288 105 0.45 40 to 42 14 288 105 0.45 42 to 44 14 288 105 0.45 44 to 46 14 288 105 0.45 46 to 48 14 288 105 0.45 48 to 50 14 288 105 0.45 ABC® Amendment Injection Location (no ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer HC118 HC1-01, HCl-02, HC1-03, HC1-04 to 32 18 to 20 14 758 49 0.45 5,306 343 3.15 20 to 22 14 758 49 0.45 22 to 24 14 758 49 0.45 24 to 26 14 758 49 0.45 26 to 28 14 758 49 0.45 28 to 30 14 758 49 0.45 30 to 32 14 758 49 0.45 HC1 HC1-05, HC1-06 14 to 36 14 to 16 14 764 43 0.45 8,404 473 4.95 16 to 18 14 764 43 0.45 18 to 20 14 764 43 0.45 20 to 22 14 764 43 0.45 22 to 24 14 764 43 0.45 24 to 26 14 764 43 0.45 26 to 28 14 764 43 0.45 28 to 30 14 764 43 0.45 30 to 32 14 764 43 0.45 32 to 34 14 764 43 0.45 34 to 36 14 764 43 0.45 HC2 HC2-12, HC2-13, HC2-14, HC2-15, HC2-25, HC2-26, HC2-27, HC2-28, HC2-29, HC2-30 19 to 31 19 to 21 14 754 53 0.45 4,524 318 2.70 21 to 23 14 754 53 0.45 23 to 25 14 754 53 0.45 25 to 27 14 754 53 0.45 27 to 29 14 754 53 0.45 29 to 31 14 754 53 0.45 HC2 HC2-16, HC2-17, HC2-18, HC2-19 22 to 36 22 to 24 14 758 49 0.45 5,306 343 3.15 24 to 26 14 758 49 0.45 26 to 28 14 758 49 0.45 28 to 30 14 758 49 0.45 30 to 32 14 758 49 0.45 32 to 34 14 758 49 0.45 34 to 36 14 758 49 0.45 HC2 HC2-20, HC2-21, HC2-22, HC2-23, HC-24 21 to 33 21 to 23 14 760 47 0.45 4,560 282 2.70 23 to 25 14 760 47 0.45 25 to 27 14 760 47 0.45 27 to 29 14 760 47 0.45 29 to 31 14 760 47 0.45 31 to 33 14 760 47 0.45 HC3 HC3-05, HC3-06, HC3-07, HC3-08 HC3-09, HC3-10 18 to 30 18 to 20 14 756 51 0.45 4,536 306 2.70 20 to 22 14 756 51 0.45 22 to 24 14 756 51 0.45 24 to 26 14 756 51 0.45 26 to 28 14 756 51 0.45 28 to 30 14 756 51 0.45 HC3 HC3-11, HC3-12, HC3-13, HC3-14, HC3-15 17 to 29 17 to 19 14 760 47 0.45 4,560 282 2.70 19 to 21 14 760 47 0.45 21 to 23 14 760 47 0.45 23 to 25 14 760 47 0.45 25 to 27 14 760 47 0.45 27 to 29 14 760 47 0.45 Table 4. Injection Location Volumes Allegion Rocky Mount Rocky Mount, North Carolina ABC® Amendment Injection Location (no ZVI) Per 2-ft lift Per Location Treatment Geology Injection Area Injection Locations Injection Interval (ft BLS) Treatment Lift Interval Target ROI Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume Diluted Carbon Amendment Volume Anaerobic Chase Water Volume KB-1 Volume (ft BLS) (ft) (gal) (gal) (liter) (gal) (gal) (liter) High Concentration 0.3 Ib of Carbon Amendment per ft3 of Treatment Volume Lower Aquifer HC1 HC1-01, HCl-O5, HC1-06 40 to 50 40 to 42 14 774 33 0.45 3.870 165 2.25 42 to 44 14 774 33 0.45 44 to 46 14 774 33 0.45 46 to 48 14 774 33 0.45 48 to 50 14 774 33 0.45 HC1 HC1-02, HC1-03, HC1-04 38 to 50 38 to 40 14 756 51 0.45 4,536 306 2.70 40 to 42 14 756 51 0.45 42 to 44 14 756 51 0.45 44 to 46 14 756 51 0.45 46 to 48 14 756 51 0.45 48 to 50 14 756 51 0.45 HC3 HC3-01, HC3-07, HC3-08 HC3-09, HC3-10 34 to 50 34 to 36 14 760 47 0.45 6,080 376 3.60 36 to 38 14 760 47 0.45 38 to 40 14 760 47 0.45 40 to 42 14 760 47 0.45 42 to 44 14 760 47 0.45 44 to 46 14 760 47 0.45 46 to 48 14 760 47 0.45 48 to 50 14 760 47 0.45 HC4 HC4-01, HC4-02, HC4-03 26 to 46 26 to 28 14 760 47 0.45 7.600 470 4.50 28 to 30 14 760 47 0.45 30 to 32 14 760 47 0.45 32 to 34 14 760 47 0.45 34 to 36 14 760 47 0.45 36 to 38 14 760 47 0.45 38 to 40 14 760 47 0.45 40 to 42 14 760 47 0.45 42 to 44 14 760 47 0.45 44 to 46 14 760 47 0.45 Downgradient Area - 0.30 Ib of Carbon Amendment per ft3 of Treatment Volume Middle Aquifer DG1 DG1-05 12 to 24 12 to 14 14 934 104 0.55 5,604 624 3.30 14 to 16 14 934 104 0.55 16 to 18 14 934 104 0.55 18 to 20 14 934 104 0.55 20 to 22 14 934 104 0.55 22 to 24 14 934 104 0.55 DG1 DG1-01, DG1-02, DG1-03, DG1-04, DG1-06, DG1-07, DG1-08, DG1-09, DG1-10, DGl-11, DG1-12, DG1-13, DG1-14 12 to 22 12 to 14 14 930 108 0.55 4,650 540 2.75 14 to 16 14 930 108 0.55 16 to 18 14 930 108 0.55 18 to 20 14 930 108 0.55 20 to 22 14 930 108 0.55 Lower Aquifer DG1 DG1-06, DG1-07, DG1-08, DG1-09 25 to 41 25 to 27 14 950 87 0.55 7,600 696 4.40 27 to 29 14 950 87 0.55 29 to 31 14 950 87 0.55 31 to 33 14 950 87 0.55 33 to 35 14 950 87 0.55 35 to 37 14 950 87 0.55 37 to 39 14 950 87 0.55 39 to 41 14 950 87 0.55 DG2 DG2-01, DG2-02, DG2-03, DG2-04 35 to 45 35 to 37 14 940 97 0.55 4,700 485 2.75 37 to 39 14 940 97 0.55 39 to 41 14 940 97 0.55 41 to 43 14 940 97 0.55 43 to 45 14 940 97 0.55 DG3 DG3-01, DG3-02, DG3-03, DG3-04, DG3-05, DG3-06, DG3-07, DG3-08, DG3-09 38 to 50 38 to 40 14 949 89 0.55 5,694 534 3.30 40 to 42 14 949 89 0.55 42 to 44 14 949 89 0.55 44 to 46 14 949 89 0.55 46 to 48 14 949 89 0.55 48 to 50 14 949 89 0.55 DG3 DG3-10, DG3-11, DG3-12 40 to 50 40 to 42 14 934 104 0.55 4.670 520 2.75 42 to 44 14 934 104 0.55 44 to 46 14 934 104 0.55 46 to 48 14 934 104 0.55 48 to 50 14 934 104 0.55 Notes: 1. ft BLS indicates feet below land surface. 2. gal indicates gallons. 3. ZVI indicates zero-valent iron. 4. lb indicates pound. 5. ft3 indicates cubic foot. 7. MONITORING PLAN — Per 15A NCAC 02C .0225(f)(111. submit a monitoring plan that includes the following: (A) target contaminants plus secondary or intermediate contaminants that may result from the injection; (B) other parameters that may serve to indicate the progress of the intended reactions; (C) a list of existing and proposed monitoring wells to be used; and (D) a sampling schedule to monitor the proposed injection. Monitoring wells shall be of sufficient quantity and location to detect any movement of injection fluids, injection process byproducts, or formation fluids outside the injection zone. The monitoring schedule shall be consistent with the proposed injection schedule, pace of the anticipated reactions, and rate of transport of the injectants and contaminants (A) Refer to Table X. Bioremediation Performance Monitoring Plan (Geosyntec, 2021b) for the proposed monitoring parameters and frequency of monitoring. Refer to Figures 5 and 10 (Geosyntec, 2021b) for the location of the proposed monitoring wells in relation to the general injection areas. (B) See above. (C) See above. Also, construction related information is provided on the attached Appendix A. Monitor Well Construction (Geosyntec, 2021a) (D) See above. Table X. Bioremediation Performance Monitoring Plan Allegion Rocky Mount Rocky Mount, North Carolina Monitoring Well ID Aquifer Monitored Injection Area Performance Monitoring Analysis Select Volatile Organic Compounds) Methane, Ethane, and Ethen Total Organic Carbon (TOC) Dehalococcoides and reductive dehalogenase functional genes (tceA , bvcA , and vcrA) Sulfate Sulfide Volatile Fatty Acids (VFAs) EPA Method 8260D EPA Method RSK- 175 SM 5310C Gene-Trac® EPA Method 9056A SM 4500 EPA Method 8015D Year 1 Year 2 Year 1 Year 2 Year 1 I Year 2 Year 1 I Year 2 Year 1 I Year 2 Year 1 I Year 2 Year 1 Year 2 High Concentration Injection Areas (HC1, HC2, HC3, HC4) MW-76D L HC1 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-76S M HC1 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-46D L HC1 - Downgradient DG3 - Upgradient A A A A A A -- -- -- -- -- Pending Results MW-46S M HC1 - Downgradient HC2 - Downgradient A A A A A A -- -- -- -- -- Pending Results MW-75D L HC2 - Downward Migration S A A A A A A A -- -- -- -- Pending Results MW-75S M HC2 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-22 M HC2 - Treatment Boundary S S S S S S S A S A S A Pending Results MW-78D L HC3 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-78S M HC3 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-58S M HC3 - Treatment Influence Upgradient A A A A A A -- -- -- -- -- Pendin g Results MW-77D L HC3 - Downgradient A A A A A A -- -- -- -- -- -- Pending Results MW-77S M HC3 - Downgradient A A A A A A -- -- -- -- -- -- Pending Results MW-30 L HC4 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results Downgradient Injection Areas (DGI, DG2, DG3) MW-37S M DG1 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-47D L DG1 - Treatment Area Q/S S Q/S S S S S S S A S A Pending Results MW-48D L DG1 - Downgradient S S S S S S -- -- -- -- -- -- Pending Results MW-74D L DG2 - Downgradient Q/S S Q/S S Q/S S S S S A S A Pending Results MW-70D L DG3 - Upgradient Q/S S Q/S S Q/S S S S S A S A Pending Results MW-41DDR L DG3 - Downgradient Q/S S Q/S S Q/S S S S S A S A Pending Results 1 Sentinel Wells MW-44D L Downgradient- Sentinel A A -- -- A A -- -- -- -- -- -- -- -- MW-44S M Downgradient- Sentinel A A -- -- A A -- -- -- -- -- -- -- -- MW-72D L Downgradient- Sentinel A A -- -- A A -- -- -- -- -- -- -- -- MW-72S M Downgradient- Sentinel A A -- -- A A -- -- -- -- -- -- -- -- Total Analytical Samples per Year 48 36 43 32 39 36 25 24 24 12 24 12 Pending Results Notes: 1. Select volatile organic compounds (VOCs) include tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-Dichloroethene, trans-1,2-DCE, 1,1-dichloroethene, and methyl ethyl ketone (MEK). 2. Aquifers monitored include U for Upper Aquifer, M for Middle Aquifer, and L for Lower Aquifer. 3. Frequency of performance monitoring is described below: a. Q/S indicates quarterly then semi-annual sampling (i.e. Month 3, Month 6, and Month 12 following injections) b. S indicates semi-annual sampling (i.e. Month 6 and Month 12 following injections) c. A indicates annual sampling (i.e. Month 12 following injections) d. -- indicates the parameter will not be included in the performance monitoring plan for the given year. e. Pending Results indicates that the analytical method may be implemented during a given year, depending on the analytical sampling results collected. 4. EPA indicates United States Environmental Protection Agency. 5. SM indicates standard method. Geosyntec consultants Geosyntec Consultants of NC, P.C. CHA8492 Page 1 of 1 April 2021 E3 ♦;y >44 Legend Upper Aquifer Monitoring Well 9 Middle Aquifer Monitoring Well Middle/Lower Aquifer Monitoring Well - Lower Aquifer Monitoring Well - Yorktown Aquifer Monitoring Well • Middle Aquifer Piezometer • Lower Aquifer Piezometer • Recovery Well Downgradient Injection Area Ma High Concentration Injection Area Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. - Only monitoring well ID numbers are presented. - Middle Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, and DG1. - Lower Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, HC4, DG1, DG2, and DG3. - Injection areas are approximate. •0 250 0 250 Feet Injection Areas Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec' consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC March 2021 Figure 5 • • • xi • Legend OMiddle Aquifer Performance Monitoring Well LowerAquifer Performance Monitoring Well Middle Aquifer Monitoring Well - LowerAquifer Monitoring Well Downgradient Injection Area IC High Concentration Injection Area Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. - Only middle and lower aquifer monitoring wells are presented. - Middle Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, and DG1. - LowerAquifer injection points are included in the following injection areas: HC1, HC2, HC3, HC4, DG1, DG2, and DG3. - Injection areas are approximate. 250 0 250 F Bioremediation Performance Monitoring Well Network Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 10 APPENDIX A. MONITOR WELL CONSTRUCTION Geosv itecp Well Aquifer Monitored Northing (X) Easting (Y) TOC Elevation (msl) Surface Grade (msl) Well Bore Diameter (in) Well Casing Diam. (in) Screen Length Length Gravel Pack (ft) Total Depth (ft BGL) Top of Gravel Pack (ft msl) Well Bottom (ft msl) Gravel Pack Stratigraphic Units Upper Sand Upper Aquifer Upper Confining Unit Middle Aquifer Middle Confining Unit Lower Aquifer Yorktown Formation Undifferentiate d Clay MW-22 M 829981.77 2364515.00 131.17 131.69 8 2 20.2 23.5 28.5 126.7 103.2 18.5 5.0 MW-30 L 830073.49 2364823.16 131.87 130.76 8 2 10.2 15.2 41.5 104.5 89.3 13.0 2.2 MW-37S U/M 830599.18 2364568.74 123.66 123.88 8 2 10.0 11.7 23.5 112.1 100.4 2.3 6.0 3.4 MW-41DDR L 830160.79 2364225.65 132.85 130.91 8 2 10.0 11.0 48.0 95.9 84.9 0.0 10.0 MW-44S M 830877.20 2364529.33 127.51 124.70 6 2 5.0 8.0 23.0 109.7 101.7 8.0 MW-44D L 830881.55 2364523.62 127.75 125.00 6 2 5.0 7.0 39.0 93.0 86.0 5.0 0.5 1.0 MW-46S M 829948.51 2364312.56 129.23 129.30 6 2 5.0 8.0 27.5 109.8 101.8 7.5 0.5 MW-46D L 829952.95 2364314.45 129.35 129.30 6 2 5.0 11.0 48.0 92.3 81.3 7.0 4.0 MW-47D L 830584.43 2364675.57 126.62 124.52 6 2 5.0 8.5 33.5 99.5 91.0 8.5 MW-48D L 830714.62 2364613.31 125.17 122.80 6 2 5.0 9.0 38.0 93.8 84.8 3.0 1.5 4.5 MW-58S M 829730.23 2365034.02 130.73 128.83 8 2 5.0 14.0 28.0 114.8 100.8 13.8 0.4 MW-70D L 830002.11 2364196.88 130.49 130.77 10 2 5.0 7.0 48.0 89.5 82.5 3.0 4.0 MW-72S M 830574.93 2364019.33 122.82 120.07 2 2 10.0 12.0 25.0 114.8 97.8 15.0 MW-72D L 830580.21 2364024.38 122.09 120.04 2 6/2 5.0 5.5 41.5 85.6 80.6 5.0 MW-74D L Not Recorded Not Recorded NR NR 8 2 5.0 7.0 43.0 NR NR 5.0 MW-75S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-75D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-76S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-76D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-77S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-77D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-78S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-78D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded 2020 Annual Report 1 January 2021 8. WELL DATA TABULATION — Per 15A NCAC 02C .0225(1)(12). provide a tabulation of data on all existing or abandoned wells within the area of review of the injection well(s) that penetrate the proposed injection zone, including monitoring wells and wells proposed for use as injection wells. Such data shall include a description of each well's type, depth, and record of construction or abandonment. Injection locations, and the monitoring wells, recovery wells, and piezometers in their immediate vicinity, are presented on Figures 5 through 7, attached (Geosyntec, 2021b). Details of the monitoring wells, piezometers, and recovery wells within the injection areas are provided on Appendix A. Monitor Well Construction, attached (Geosyntec, 2021a). APPENDIX A. MONITOR WELL CONSTRUCTION ( co \'I1lLC Well Aquifer Monitored Northing (X) Easting (Y) TOC Elevation (msl) Surface Grade (msl) Well Bore Diameter (in) Well Casing Diam. (in) Screen Length Length Gravel Pack (ft) Total Depth (ft BGL) Top of Gravel Pack (ft msl) Well Bottom (ft msl) Gravel Pack Stratigraphic Units Upper Sand Upper Aquifer Upper Confining Unit Middle Aquifer Middle Confining Unit Lower Aquifer Yorktown Formation Undifferentiate d Clay MW-9 M 830589.69 2364696.71 126.10 124.49 8 2 15.2 19.0 21.0 122.5 103.5 16.0 3.0 MW-9D L 830580.30 2364704.84 126.35 124.82 10 2 5.2 17.0 55.0 86.8 69.8 3.5 13.5 MW-22 M 829981.77 2364515.00 131.17 131.69 8 2 20.2 23.5 28.5 126.7 103.2 18.5 5.0 MW-30 L 830073.49 2364823.16 131.87 130.76 8 2 10.2 15.2 41.5 104.5 89.3 13.0 2.2 MW-37S U/M 830599.18 2364568.74 123.66 123.88 8 2 10.0 11.7 23.5 112.1 100.4 2.3 6.0 3.4 MW-37D L 830604.58 2364570.72 123.65 124.01 8 2 5.0 8.5 40.0 92.5 84.0 3.3 5.2 MW-47D L 830584.43 2364675.57 126.62 124.52 6 2 5.0 8.5 33.5 99.5 91.0 8.5 MW-58S M 829730.23 2365034.02 130.73 128.83 8 2 5.0 14.0 28.0 114.8 100.8 13.8 0.4 MW-58D L 829724.59 2365037.85 131.17 129.13 8 2 MW-70D L 830002.11 2364196.88 130.49 130.77 10 2 5.0 7.0 48.0 89.5 82.5 3.0 4.0 MW-75S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-75D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-76S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-76D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-77S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-77D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded MW-78S M Not Recorded Not Recorded NR NR 12 2 10.0 12.0 30.0 NR NR Not Recorded MW-78D L Not Recorded Not Recorded NR NR 12 2 10.0 12.0 50.0 NR NR Not Recorded WRW-5M M 830658.53 2364468.45 125.27 123.20 12 6 5.0 10.0 23.0 110.2 100.2 9.5 0.5 WRW-5L L 830657.27 2364473.75 125.04 123.20 10 6 5.0 7.0 34.0 96.2 89.2 2.0 5.0 WRW-6M M 830600.17 2364652.46 125.92 124.10 12 6 5.0 7.5 23.5 108.1 100.6 0.5 7.0 WRW-6L L 830599.44 2364658.44 126.53 124.10 8 6 10.0 13.0 38.0 99.1 86.1 13.0 WRW-10L L 830083.58 2364852.03 130.79 128.69 12 6 10.0 10.0 44.0 94.7 84.7 10.0 Out of service WRW-10M M 830076.17 2364844.36 131.32 129.37 12 6 10.0 12.0 35.0 23 BGL 35 BGL WRW-14L L 830120.70 2364244.79 129.43 130.53 12 6 10.0 11.0 48.0 92.4 81.4 11.0 WRW-15L L Not Recorded Not Recorded NR NR 12 6 10.0 11.0 45.0 NR NR PZ-8 L 830060.90 2364198.88 130.97 131.04 1.75 1 3.0 3.0 45.0 89.1 86.1 3.0 RW-2 M 829834.08 2364463.35 132.74 130.41 8 6 20.0 25.5 33.5 Abandoned 2.5 9.0 10.0 4.0 RW-7 M 829877.52 2364473.60 131.22 131.69 8 6 20.0 24.0 36.0 Abandoned 1.5 7.0 8.5 7.0 WRW-9M M 829714.48 2364912.66 131.33 129.55 12 6 10.0 31.0 36.0 Abandoned 25.0 4.0 2.0 2020 Annual Report 1 January 2021 E3 ♦;y >44 Legend Upper Aquifer Monitoring Well 9 Middle Aquifer Monitoring Well Middle/Lower Aquifer Monitoring Well - Lower Aquifer Monitoring Well - Yorktown Aquifer Monitoring Well • Middle Aquifer Piezometer • Lower Aquifer Piezometer • Recovery Well Downgradient Injection Area Ma High Concentration Injection Area Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. - Only monitoring well ID numbers are presented. - Middle Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, and DG1. - Lower Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, HC4, DG1, DG2, and DG3. - Injection areas are approximate. •0 250 0 250 Feet Injection Areas Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec' consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC March 2021 Figure 5 Legend Upper Aquifer Monitoring Well 6 Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well • High Concentration Injection Locations: ZVI and Amendment (14-ft ROI) 0 •�e High Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and Amendment Injection Locations for Middle and Lower Aquifers: Amendment Only PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron injection - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. HC3-10 HC3-11 fHC3=12' HC3-09-_ ii • • 1+78D ,HC3-02 HC41`r'� HC3-15 HC3-03 • H 4 HC3-08 \ 78S HC3-04 HC3-13 • ' HC3-07 t HC3-05,d HC3-06 50 0 50 Feet Middle Aquifer High Concentration Injection Areas: HC1, HC2, and HC3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29 Raleigh, NC March 2021 Figure 6A .4 • r Legend Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well Lower and Middle Aquifer Injection Locations: Amendment Only Lower and Middle Aquifer Injection Locations: Amendment Only 0 :if.e — PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (fag/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. 50 0 50 Feet Middle Aquifer Downgradient Injection Areas: DG1 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec c consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-2 Raleigh, NC April 2021 Figure 6B Legend Upper Aquifer Monitoring Well - Middle Aquifer Monitoring Well $ Lower Aquifer Monitoring Well O Middle Aquifer Piezometer •e Lower Aquifer Piezometer • Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) < PCE Sink Approximate ERH Footprint — Aspen Investments Property Boundary OHigh Concentration Injection Locations: ZVI and Amendment (14-ft ROI) OHigh Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and .. • Amendment i Injection Locations for Middle and Lower Aquifers: •..• Amendment Only Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells. HC3-09 HC3-10— HC3-0• 2 - o 20 HC3-03 78S HC3-01 G HC3-08 HC3-04 • r000` 3504HC3 OTw-- . • 50 0 50 Feet Lower Aquifer High Concentration Injection Areas: HC1, HC2, HC3, and HC4 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC March 2021 Figure 7A � v+ Legend 9 Upper Aquifer Monitoring Well $ Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Lower Aquifer Piezometer O Recovery Well —PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) ODowngradient Injection Location: Amendment Only (14-ft ROI) Injection Location for Middle and Lower Aquifers: .. • Amendment Only (14-ft ROI) — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells Pry. • 4 le 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG1 and DG2 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC April 2021 Figure 7B '• 44 . • • • r., • • Legend • Middle Aquifer Monitoring Well - Lower Aquifer Monitoring Well O Middle Aquifer Piezometer Lower Aquifer Piezometer Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (pg/L) / • Downgradient Injection Location: Amendment Only (14-ft ROI) Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec u consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 7C 9. MAPS AND CROSS -SECTIONS — Per 15A NCAC 02C .0225(0(131. provide scaled, site -specific site plans or maps depicting the location, orientation, and relationship of facility components including the following: (A) 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; (B) topographic contour intervals showing all facility related structures, property boundaries, streams, springs, lakes, ponds, and other surface drainage features; (C) all existing or abandoned wells within the area of review of the wells listed in the well data tabulation that penetrate the proposed injection zone; (D) potentiometric surface map(s) that show the direction of groundwater movement, existing and proposed wells; (E) contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the contaminant plume in soil and groundwater, and existing and proposed wells; (F) cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical extent of the contaminant plume in soil and groundwater, major changes in lithology, and existing and proposed wells; and (G) any existing sources of potential or known groundwater contamination, including waste storage, treatment, or disposal systems within the area of review of the injection well or well system. (A) See Figure 1 — Topographic Map from the Allegion Bioremediation Implementation Workplan (Geosyntec, 2021b) (B) See Figure 1 — Topographic Map and Figure 2 - Site Layout (Geosyntec, 2021b). The nearest downgradient surface water body is Belmont Lake, located approximately 1,000 ft downgradient of the proposed injection area. (C) See Figures 5 through 7 (Geosyntec, 2021b) (D) See Figures 3A and 3B from Q4 Operation and Monitoring Report 2020 (E) See Figures 3 and 4 from Bioremediation Implementation Workplan for PCE groundwater plumes and all existing monitoring wells screened within the relevant aquifer that were sampled in 2020 and/or 2021. (F) See Figure 5 and 6 Geologic Cross Sections (Geosyntec, 2017) and Figure 4 -Sample Locations and Cross- Sections (Geosyntec, 2017). Cross Sections A -A', B-B', C-C', and D- D', shown on Figure 8 (Geosyntec, 2016) include additional information on lithology and PID readings prior to thermal remediation. (G) See Figure 3 SWMU and AOC Location Map (Gesoyntec, 2016) for areas of concerns and Solid Waste Management Units, which identify potential sources (Geosyntec, 2016) Notes 1. Property boundary provided by Nash County Website (28 March 2017). 2,000 1,000 0 2,000 Feet USGS Topographic Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants GensyMec Consullanis of NC, PI: Figure 1 Raleigh, NC March 2021 \\annarbor-01\Projects \Allegion\Rocky Mount\7.0 Figures \GIS_2017\MXD\2020 Work Plan MXDs\Figure 1 - Topo Map.mxd. swalke 1/14/2020. 25S 25D ; 2M Legend 1. Upper Aquifer Monitoring Well - Middle Aquifer Monitoring Well - Middle/Lower Aquifer Monitoring Well 9 Lower Aquifer Monitoring Well 9 Yorktown Aquifer Monitoring Well • Middle Aquifer Piezometer o Lower Aquifer Piezometer • Recovery Well • Sub -Slab Depressurization System Extraction Points Aspen Investments Property Boundary Approximate ERH Footprint Notes - Locations are approximate, based on figures by ERM. - Property boundary is from Nash County Website (28 March 2017). -Aerial imagery is from North Carolina OneMap (2013). - ERH indicates electrical resistance heating. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells. 4M 44D 27 G 44S 15D 74D C' 15L 40S 40DD 40D 42 D 42S 75D 46S V6 V7 V5_ V1 56S 76D 77S 77D 78D 78S 250 125 Site Layout Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° consultants NC License No,: C.3500 and C-295 Raleigh, NC April 2021 250 Feet Figure 2 E3 ♦;y >44 Legend Upper Aquifer Monitoring Well 9 Middle Aquifer Monitoring Well Middle/Lower Aquifer Monitoring Well - Lower Aquifer Monitoring Well - Yorktown Aquifer Monitoring Well • Middle Aquifer Piezometer • Lower Aquifer Piezometer • Recovery Well Downgradient Injection Area Ma High Concentration Injection Area Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. - Only monitoring well ID numbers are presented. - Middle Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, and DG1. - Lower Aquifer injection points are included in the following injection areas: HC1, HC2, HC3, HC4, DG1, DG2, and DG3. - Injection areas are approximate. •0 250 0 250 Feet Injection Areas Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec' consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC March 2021 Figure 5 Legend Upper Aquifer Monitoring Well 6 Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well • High Concentration Injection Locations: ZVI and Amendment (14-ft ROI) 0 •�e High Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and Amendment Injection Locations for Middle and Lower Aquifers: Amendment Only PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron injection - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. HC3-10 HC3-11 fHC3=12' HC3-09-_ ii • • 1+78D ,HC3-02 HC41`r'� HC3-15 HC3-03 • H 4 HC3-08 \ 78S HC3-04 HC3-13 • ' HC3-07 t HC3-05,d HC3-06 50 0 50 Feet Middle Aquifer High Concentration Injection Areas: HC1, HC2, and HC3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29 Raleigh, NC March 2021 Figure 6A .4 • r Legend Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Recovery Well Lower and Middle Aquifer Injection Locations: Amendment Only Lower and Middle Aquifer Injection Locations: Amendment Only 0 :if.e — PCE Isoconcentration Contour (fag/L) Approximate ERH Footprint — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (fag/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells and recovery wells. 50 0 50 Feet Middle Aquifer Downgradient Injection Areas: DG1 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec c consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-2 Raleigh, NC April 2021 Figure 6B Legend Upper Aquifer Monitoring Well - Middle Aquifer Monitoring Well $ Lower Aquifer Monitoring Well O Middle Aquifer Piezometer •e Lower Aquifer Piezometer • Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) < PCE Sink Approximate ERH Footprint — Aspen Investments Property Boundary OHigh Concentration Injection Locations: ZVI and Amendment (14-ft ROI) OHigh Concentration Injection Locations: Amendment Only (14-ft ROI) Injection Locations for Middle and Lower Aquifers: ZVI and .. • Amendment i Injection Locations for Middle and Lower Aquifers: •..• Amendment Only Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ERH - electrical resistance heating - ROI - radius of influence - ZVI - zero valent iron - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells. HC3-09 HC3-10— HC3-0• 2 - o 20 HC3-03 78S HC3-01 G HC3-08 HC3-04 • r000` 3504HC3 OTw-- . • 50 0 50 Feet Lower Aquifer High Concentration Injection Areas: HC1, HC2, HC3, and HC4 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC March 2021 Figure 7A � v+ Legend 9 Upper Aquifer Monitoring Well $ Middle Aquifer Monitoring Well Lower Aquifer Monitoring Well Lower Aquifer Piezometer O Recovery Well —PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (fag/L) ODowngradient Injection Location: Amendment Only (14-ft ROI) Injection Location for Middle and Lower Aquifers: .. • Amendment Only (14-ft ROI) — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Solid ROIs indicate that the injection locations are only targeting the middle aquifer. Dashed ROIs indicate the injection locations are targeting both the middle aquifer and the lower aquifer. - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells Pry. • 4 le 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG1 and DG2 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-29' Raleigh, NC April 2021 Figure 7B '• 44 . • • • r., • • Legend • Middle Aquifer Monitoring Well - Lower Aquifer Monitoring Well O Middle Aquifer Piezometer Lower Aquifer Piezometer Recovery Well — PCE Isoconcentration Contour (fag/L) - - Inferred PCE Isoconcentration Contour (pg/L) / • Downgradient Injection Location: Amendment Only (14-ft ROI) Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided byArcGIS Online. -All concentrations are in micrograms per liter (pg/L). - PCE - tetrachloroethene - ROI - radius of influence - Only relevant ID numbers are presented for monitoring wells, piezometers, and recovery wells 50 0 50 Feet Lower Aquifer Downgradient Injection Areas: DG3 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec u consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 7C MW-43S M W-52 102446 Legend + Middle Aquifer Monitoring Well Groundwater Elevation Contours (ft asml) Groundwater Flow Direction Original Rocky Mount Property Boundary Notes - Locations are approximate, based on figures produced by ERM. - Aerial imagery from ArcGIS Online. Photograph taken 21 May 2014, provided courtesy of NAIP. - Groundwater elevations measured 24 August through 26 August 2020. MW-49S 102.38 OMW-72S M W-71 S 119.8 120.63 • • MW-42S 124.74—' 'MW--16D ..113.49 MW-50S MW-44S 11244 MW-37S `114.3 MW-54S 120.52 ' l 1 MW-22 MW-46S _ 120.31 ',120..73 MW-56S 20.86 MW-32 ----120.2 if MW-38S 114r69 MW-58S ',;r 12004 118.22 MW-69S 119.93 Groundwater Elevation Contours - Middle Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh January 2021 Figure 3A MW-43D 100.16 Legend ♦ Lower Aquifer Monitoring Well • Lower Aquifer Piezometer ti Groundwater Flow Direction Groundwater Elevation Contours (ft asml) Original Rocky Mount Property Boundary Notes - Locations are approximate, based on figures produced by ERM. - Aerial imagery from ArcGIS Online. Photograph taken 21 May 2014, provided courtesy of NAIP. - Groundwater elevations measured 24 August through 26 August 2020. MW-49D MW-53D 103.18 102.94 MW-72D 113.44 119.87 MW-44D 108.57 MW-48D 114.42 MW-37D '4.114.53 PZ-9 110 MW-36 PZ-5 120.03 119.97 MW-73D 120.16 PZ-6 120.02 MW-41DDR 120.05 PZ-7 PZ-8 e 4 MW-40DD 120.21 120.24 MW-39DD 120.26 MW-67D 119.94 20 MW-59D 114.99 120.01 MW-68D , MW-66D 120.46 120.15Z 120.01 120.71 110 Groundwater Elevation Contours - Lower Aquifer Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh January 2021 Figure 3B MW-43S ND MW-52 ND MW-25S ND MW-53S ND Legend 'L Upper Aquifer Monitoring Well Middle Aquifer Monitoring Wells Middle Aquifer Well Sampled February 2021 PCE Isoconcentration Contour (fag/L) Inferred PCE Isoconcentration Contour (fag/L) Aspen Investments Property Boundary • Recovery Wells Notes: - Only middle aquifer monitoring wells and recovery wells are presented on this figure, with the exception of MW-01 (shallow aquifer), which is partially screen in the middle - Data is only presented for middle aquifer monitoring wells sampled in 2020 or 2021. The most recent sampling data from 2020 or 2021 is presented for each of these middle aquifer monitoring wells. Monitoring wells sampled in 2020, but before the fourth quarter (November 2020), are indicated with an asterisk. - Locations are approximate, based on figures produced by ERM. -All concentrations are in micrograms per liter (pg/L). - J - Estimated concentration. Concentration is greater than the Method Detection Limit but less than the Limit of Quantitation. - ND - Not detected - PCE - tetrachloroethene -Aerial imagery provided byArcGIS Online. MW-49S MW-72S N D* MW-44S ND MW-16S MW-23 ND MW-54S ND* MW-56S ND* MW-76S 5,630 'L, MW-19D It• MW-321 MW-77S -_926* 1,160 ,.t MW-58S r5,'400 250 0 250 Feet PCE Isoconcentration Contours Middle Aquifer - February 2021 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° consultants Geosyntec Consultants of NC, P.0 NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 3 j: . 4k .y, ti• " Jr*� �6 4 VVRW-12L Legend $ Lower Aquifer Monitoring Wells ® Lower Aquifer Well Sampled February 2021 • Recovery Wells —PCE Isoconcentration Contour (pg/L) - - Inferred PCE Isoconcentration Contour (pg/L) PCE Sink — Aspen Investments Property Boundary Notes: - Locations are approximate, based on figures produced by ERM. -Aerial imagery provided by ArcGIS Online. - Only lower aquifer monitoring wells and recovery wells are presented on this figure. -All concentrations are in pg/L. - Data is only presented for lower aquifer monitoring wells sampled in 21 or 2021. The most recent sampling data from 2020 or 2021 is presented for each of these middle aquifer monitoring wells. Monitoring wells sam in 2020, but before the fourth quarter (November 2020), are indicated with an asterisk. - J - Estimated concentration. Concentration is greater than the Method Detection Limit but less than the Limit of Quantitation. - ND - Not detected - PCE - tetrachloroethene PCE Isoconcentration Contours Lower Aquifer - February 2021 Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° consultants Geosyntec Consultants of NC, P.C. NC License No.: C-3500 and C-295 Raleigh, NC April 2021 Figure 4 \GIS 2017\MXD\IM IL c c an narbor-01 \A:\Proir it logr MW-55S D D PT-07 SS8 -RW-7 MiHPT-10 DPT-05 LEGEND 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool 2014 Hand Augered Boring • Monitoring Well Aspen Investments Property Boundary Cross -Section Location Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Property boundary is from Nash County Website (28 March 2017). MW-22 MW-62S HA-04 2014 and 2017 Sample and Cross -Section Location Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 4 Legend • • • Monitoring Well 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool Facility Building Geologic Material Paleochannel Upper Clay Middle Aquifer Middle Confining Unit Lower Aquifer Lower Confining Unit • • • AOI-2 MW-55S SS20 DPT-06 ativomwori A' DPT-07 SS8_ W 7 SSO MiHPT-10 _- 7 I�A71-I PT-'11 W-7M 1 2 • RW- 5S17 2 r- MiHPT-12 SS33 DP S3 DPT-08 S S SS6 SS22 SS19 Mi H PT-09 Ir" 464.;7777. SS32 SS17 RW2 SS2 SS9 SS18 MiHPT-09 0 25 Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Geologic cross-section was modelled in Earth Volumetric Studio (EVS). 3. Boreholes within 10 ft are projected onto cross-section. 4. ft amsl stands for feet above mean sea level. 5. Elevations are from a digital elevation model (DEM) generated using LiDAR data from North Carolina's Spatial Data Download. 50 75 100 Distance (ft) 125 150 175 200 225 130 m —115 < 0 a) 3 —100� 85 Geologic Cross Section A -A' Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 5 c Y Legend • Monitoring Well • 2017 Direct Push Technology 2014 Direct Push Technology 2014 Membrane Interface Probe and Hydraulic Profiling Tool 2014 Hand Augered B L 0 0 0 50 SS12 Notes: 1. Aerial Imagery is from North Carolina OneMap (2013). 2. Geologic cross-section was modelled in Earth Volumetric Studio (EVS). 3. Boreholes within 10 ft are projected onto cross-section. 4. ft amsl stands for feet above mean sea level. 5. Elevations are from a digital elevation model (DEM) generated using LiDAR data from North Carolina's Spatial Data Download. Geologic Material Upper Clay Middle Middle Confining Unit Lower Lower Confining Unit • • • 100 MW65D MiHPT-OC SS4 SS11 NM 150 WRW-8M RW-3 Mi g MW-3 Distance (ft) MiH PT-03S SS12 Mi H PT-02 200 SS28 0 SS13 DPT-12 DPT-11 SS27 WRW-9M MW-10D SS14 SS25 MiHPT-05 HA-01 0 250 0 0 SS 11 SS5 DPT-03 0 0 0 S28 SS13 0 300 0 AOI-1 r HA-03 350 130 90 70 Geologic Cross Section B-B' Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec ° Consultants of NC, PC NC License No.: C-3500 CHARLOTTE, NC JUNE 2017 Figure 6 Legend 0 Soil Boring Cross -Section A -A' - Cross -Section B-B' - Cross -Section C-C' - Cross -Section D-D' — Interior Building Layout Approximate Drainage Ditch Location I l-Brownfields No -Build Line Q Original Rocky Mount Property Boundary Notes: DPT - Direct Push Technology HA- Hand Augered Boring MiHPT - Membrane Interface Probe and Hydraulic Profiling Tool PCE - Tetrachloroethene Aerial imagery from ArcGIS Online. Photograph taken 21 May, 2014, provided courtesy of NAIP. 150 100 50 0 150 Feet 2014 Sample Locations and Cross -Sections A -A' Through D-D' Location Map Former Schlage Lock Facility 213 Red Iron Road Rocky Mount, North Carolina Geosyntec° Consultants of NC, PC NC License No.: C -35011 Figure 8 Raleigh November 2016 CKYMOUNT LOGS\ALLEGION LOGS REV1.G Z 0 2 r z 0 w co z a 0 N 4 0) 0) Z (77 N 0) Geosyntec l> consultants CLIENT Allegion - RMYO PROJECT NUMBER CHA8373 135 DPT-12 130 125 120 0 W 115 110 105 100 95 90 A 2501 Blue Ridge Road, Suite 430 Raleigh, NC 27607 PH 919.870.0576 FAX 919.870.0578 www.geosyntec.com 20 40 Former Drum Storage Area DPT-10< 60 SUBSURFACE DIAGRAM Cross section A -A' PROJECT NAME Former Schlage facility PROJECT LOCATION 3551 N. Wesleyan Blvd., Rocky Mount, NC 80 100 Drainage Ditch (Ditch depth approximated) 120 USCS Clayey Sand USCS High Plasticity Clay USCS Low to High Plasticity Clay 140 160 180 200 USCS Low Plasticity Clay No Core USCS Poorly -graded Sand USCS Poorly -graded Sand with Silt Soil PCE Concentration (mg/kg) DPT-04 HA-2.5 HA-3 riO 330 �440,.::: 2200- ,.410/1/A032 U 210 U er A infer 6,100 pp a Predominantl Cla with . 180 /� . .... .... .... .... .... .... .... .... interbedded Sands and Sandy Clays..:::. ..::. ..:::. ..: ,600"rn#://vni.drifAmximate zzzyz4115 3/111/1//////////////////////////////////p water level from 3/2°16//MA 0.43 110 .. ..� .. .. .. .. ..� .. .. .. .. .. 135 130 ',Confining Unit jPredominantl Cla with Sand Seams 20 40 60 Middle Aquifer Predominantly Sand, Silty Sandi and Clayey Sand 80 100 Distance Along Baseline (ft) 120 140 160 180 200 125 105 100 9 90 A' STRATIGRAPHY & GW - A SIZE - GINT STD US LAB.GDT - 10/23/14 14:38 - C:\USERS\RWARRIER\DOCUMENTS\ROCKYMOUNT LOGS\ALLEGION LOGS.GR1 Geosyntec ° consultants CLIENT Allegion - RMYO PROJECT NUMBER CHA8373 2501 Blue Ridge Road, Suite 430 Raleigh, NC 27607 PH 919.870.0576 FAX 919.870.0578 www.geosyntec.com Figure 4.2 SUBSURFACE DIAGRAM Cross section B-B' PROJECT NAME Former Schlage facility PROJECT LOCATION 100 Red Iron Road, Rocky Mount, NC Vi USCS Clayey Sand USCS High Plasticity Clay USCS Low to High Plasticity Clay 10 Soil and Aquifer Matrix PCE Concentration (mg/kg) Notes: 1. Lithology inferred from HPT data log. USCS Low Plasticity Clay USCS Poorly -graded Sand USCS Poorly -graded Sand with Silt No Core 0 a) W 135 130 125 120 115 110 105 100 95 90 100 200 300 400 500 600 700 800 900 1,000 South M I HPT-06 DPT-03 DPT-10 DPT-12 /Upper Aquifer -:: Interbedded Clayey Sands and; Highly Plastic Claysf: Middle Aquifer - Interbedded Sands, Clayey Sands and Clay ® a r/7 / I s: ,Predominantly Clay with J.E iZinterbedded Clayey Sands 1 M IHPT•06 PID Max (µVx107) OA 11 0 ECD Max (µVx107) 13 7- DPT-14 North. MIHPT-0.1 B 0 100 200 300 400 500 600 Distance Along Baseline (ft) 700 800 900 1,000 135 130 125 120 115 110 105 100 95 90 B' STRATIGRAPHY & GW - B SIZE - GINT STD US LAB.GDT - 11/23/16 05:59 - N:\ALLEGION\RYMO\DATA\GINT\ROCKYMOUNT LOGS\ALLEGION LOGS REV1.GPJ Geosyntec l> consultants CLIENT Allegion - RMYO PROJECT NUMBER CHA8373 2501 Blue Ridge Road, Suite 430 Raleigh, NC 27607 PH 919.870.0576 FAX 919.870.0578 www.geosyntec.com SUBSURFACE DIAGRAM Cross section C-C' PROJECT NAME Former Schlage facility PROJECT LOCATION 100 Red Iron Road, Rocky Mount, NC USCS High Plasticity Clay USCS Poorly -graded Sand Soil PCE Concentrations (mg/kg) USCS Clayey Sand USCS Low Plasticity Clay USCS Clayey Sand USCS High Plasticity Organic silt or clay 135 50 100 150 200 250 300 DPT-02 130 i Former PCE Filling Vault MiIIPT-4 PID Max (aVx107) DPT-09 125 / J 6 S 0.0 0.5 1.0 10 1 - 105 105/ -14 26 100 95 0 I30 32 ] N— S6 36 Former Drum Storage Area DPT-12 DPT-11 DPT-04 /,PrUpper Aquifer edominantly Clay withf,/,r„ /1/4/71/ interbedded Sands and Clayey Sands 0.0032 ,.7///. .........................................:: Approximate water level from 3/2016 /Confining Unit Predominantly Highly Plastic Cla ith Claye Sand Seams/� 0 5 100 150 Distance Along Baseline (ft) 200 250 300 135 130 125 120 15 110 105 100 9 9 STRATIGRAPHY & GW - B SIZE - GINT STD US LAB.GDT - 11/22/16 16:02 - N: \ALLEGION RYMO \ DATA \ GINTROCKYMOUNT LOGS \ALLEGION LOGS REV1.GPJ Geosyntec consultants CLIENT AIlegion - RMYO PROJECT NUMBER CHA8373 2501 Blue Ridge Road, Suite 430 Raleigh, NC 27607 PH 919.870.0576 FAX 919.870.0578 www.geosyntec.com SUBSURFACE DIAGRAM Cross -Section D-D' PROJECT NAME Former Schlage facility PROJECT LOCATION 100 Red Iron Road, Rocky Mount, NC 41' Concrete 17Z USCS High Plasticity Clay USCS Clayey Sand USCS Poorly -graded Sand with Clay USCS Low Plasticity Clay USCS Clayey Sand No Core Soil PCE Concentrations (mg/kg) USCS Poorly -graded Sand USCS Poorly -graded Sand with Silt USCS Silty Sand 4- 0 LLJ 135 130 125 120 115 110 105 100 95 0 85 0 DPT-13 0 10 tr,•••,+1‘..••• 10 20 30 Partially Confining Unit Predominantly Clay/ 40 Middle Aquifer Predominantly Sand, Silty Sand i‘ and Clayey Sand„„‘„,, 4Confining Unit Predominantly Highly Plastic Clay with Cla ey Sand Seams% Lower Aquifer Predominantly Sand, Silty Sand and Clayey Sand 20 30 40 50 60 Vapor Degreaser Room DPT-05 50 42 43 70 MA-WT-10 PID Max (.tVx 107) 0.4 0.5 p'; 60 Distance Along Baseline (ft) 70 80 90 100 Existing Building Approximate water level from 3/2016 (0.0030 U 80 90 100 110 110 120 1.1•P .11.1 1.pp. •im• 120 135 130 125 120 115 110 105 100 95 90 85 Areas of Concern AOC 1 AOC 2 AOC 3 Soil Contamination —Northern Parking Lot/Railroad Spur Area Soil Contamination — Southeastern Parking Lot/Former Barrel Storage Area Soil Contamination — Northeastern Building Addition Solid Waste Management Areas SWMU 1 SWMU 2 SWMU 3 SWMU 4 SWMU 5 SWMU 6 SWMU 7 SWMU 8 SWMU 9 SWMU 10 SWMU 11 SWMU 12 SWMU 13 Fork Lift Maintenance Area Sump Pipe Chase in Imperial Line / 10B Area DMP Area Stripping Room NAPCO Room Hand Plating Line Sump Vapor Degreaser Trench Tetrachloroethene Storage Tank (Vapor Degreaser Room) Contaminated Soil / Dry Well Outside Lacquer Room Filling Vault for Tetrachloroethene / Caustic Soda New Drum Storage Pad Old Drum Storage Pad NPDES Discharge Ditch Legend Approximate Area of Interest n Site Feature Q Original RYMO Property Boundary am Brownfields No -Build Line �l Notes - Locations are approximate, based on figures produced by ERM. - Aerial imagery from ArcGIS Online. Photograph taken 21 May 2014, provided courtesy of NAIP. Former Storage Area • • Former Vapor Degreaser Room Forme DrytWWell Outside Lacquer Room Degreaser Filter Dumpster n Former Old Storage Area SWMU and AOC Location Map Former Schlage Lock Facility 3551 North Wesleyan Boulevard Rocky Mount, North Carolina Geosyntec ° ConsuIi uits of NC, PC' NI( License No.: C-35{14} Raleigh, NC Nov 2016 Figure 3 P:\Projects\Allegion\Rocky Mount\From Raleigh Server\RYMO \GIS\20161024 IR RYMO_Figure_SWMUs_and_AOC .mxd; BVanduinen; 30-Nov-2016; CHA8437/01 REFERENCES Fowler, Troy, Bruce Thompson, and Jim Mueller. 2011. Acetone and 2-butanone creation associated with biological and chemical remediation of environmental contamination. Remediation 22 (Winter): 9-28. doi: 10.1002/rem.21296. Geosyntec Consultants of NC, PC, "Source -focused Facility Characterization Work Plan", December 2016. Geosyntec Consultants of NC, PC, "Interim Measures Completion Report", December 2019. Geosyntec Consultants of NC, PC, "2020 Work Plan", January 2020. Geosyntec Consultants of NC, PC, "2020 Annual Groundwater Monitoring and Corrective Action Status Report", January 2021a. Geosyntec Consultants of NC, PC, "Bioremediation Implementation Workplan", April 2021b. North Carolina Depailment of Environmental Quality, "Title 15A North Carolina Administrative Code Subchapter 2L: Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina", Last Amended April 2013. North Carolina Depailiuent of Environmental Quality, Division of Waste Management, "Non -Residential Vapor Intrusion Screening Concentrations", February 2018. Rhodes, Thomas S., and Conrad, Stephen G., 1985, Geologic Map of North Carolina: Depailment of Natural Resources and Community Development, Division of Land Resources, and the NC Geological Survey, compiled by Brown, Philip M., et al, and Parker, John M. III, and in association with the State Geologic Map Advisory Committee, scale 1:500,000.