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7407_Pitt_C&DLandfillInc_CDLF_Phase1_ASDAddendum_FID1833653_20240404
� `.�E SOt�TiO W � cZn h OQ ONMFNT & DEVE�' ELM Site Solutions, Inc. P. O. Box 97607 Raleigh, North Carolina 27624 Phone: (919) 792-3733 April 3, 2024 submitted via electronic mail Ms. Jaclynne Drummond Hydrogeologist Solid Waste Section Division of Waste Management North Carolina Department of Environmental Quality 217 West Jones Street Raleigh, North Carolina 27603 RE: Alternate Source Demonstration (ASD) Report Addendum C&D Landfill, Inc. Permit #: 7407-CDLF-2001/2009 Dear Ms. Drummond: Following our discussion on the above -referenced topic, this correspondence provides additional information to supplement the ASD Report submitted to the department in December 2023. Attached are the following documents: 1. Data Tables a. Table A — ASD Field Parameters b. Field Parameter Data Sheets c. Table B — ASD Soil Analytical Results d. Table C — ASD Groundwater Analytical Results e. Table D — ASD GSI Piezometer Analytical Results f. Table E — ASD GSI Surface Water Analytical Results Ms. Jaclynne Drummond ASD Report Addendum April 3, 2024 2. Site Figures a. Figures 1 through 4 compare groundwater -surface water interaction (GSI) metals of interest (MOI) data to local groundwater and surface water data noting: i. all data is unfiltered; and ii. data shows attenuation across the groundwater -surface water interface. b. Figure 5 shows a time -trend analysis at the site's compliance surface water sampling locations (SW-1, SW-2, SW-3 and SW-4) from 2017 through 2023 noting: i. all data is unfiltered; ii. MOI concentrations are correlated to turbidity; iii. SW-1 and SW-4, background conditions prevail; and iv. all surface water features are intermittent and supported by groundwater where available. Based on the attached documents, our conclusions are: • MOls are naturally attenuated before groundwater discharges to surface water. • Turbidity inflates total MOI concentrations in surface water. Future surface water sampling, if necessary, should include both the total and dissolved (filtered) MOI fractions. • These data are consistent with the ASD Report conclusions: o The observed MOTs in groundwater and surface water are naturally occurring. o The elevated detections are due to infiltration through disturbed native soils used for covering, shaping and grading. o Once in groundwater, significant dissolved phase MOI transport is not apparent. Please contact us if you have any questions or if additional information is required. Sincerely, ELM Site Solutions, Inc. Rusty Norris, PE, PLS, RSM Senior Engineer c Judson Whitehurst `, Table A Stabilized Groundwater Field Parameter Measurements - September 2023 C&D Landfill, Inc. Construction and Demolition Debris Landfill Greenville, North Carolina Sample ID Volume Purged (Gallons) Temperature (degrees C) pH (SU) Specific Conductivity (US/CM) Turbidity (NTU) Dissolved Oxygen (mg/L) Oxidation Reduction Potential (mV) Ferrous Iron (mg/L)* PZ-1 3.5 20.9 4.91 48.0 54.9 3.21 58.4 0.5 PZ-2 3.0 21.9 6.57 3326 0.6 0.17 -121 2.0 PZ-3 3.5 20.4 5.47 160.6 2.1 1.61 196 0.0 PZ-4 3.5 20.2 6.97 3141 30.9 0.50 -116 3.5 PZ-5 4.25 20.9 5.38 138.0 13.1 0.44 55.0 0.0 PZ-8 2.25 21.3 6.93 3051 9.1 1.00 -119 7.0 PZ-9A NM NM NM NM NM NM NM NM PZ-10 3.25 20.1 6.83 2815 24.7 1.23 -91.7 6.0 PZ-11 NM NM NM NM NM NM NM NM MW-2S 3.25 22.0 6.00 2400 1.0 0.14 -117 3.0 MW-3A 3.75 22.1 5.83 2430 2.4 0.16 -169 3.0 MW-3S 2.75 22.8 6.03 3360 2.5 0.43 -182 3.0 MW-5 1.75 25.0 6.74 1412 3.8 0.35 -83.4 5.0 MW-6 3.5 21.0 6.06 1500 7.1 0.15 -130 4.0 MW-8 4.5 21.5 6.76 3326 1.8 0.00 -195 3.0 MW-12S 2.0 22.6 6.90 3609 0.7 0.07 -169 1.0 MW-13 2.25 21.4 6.41 1892 NA** 0.22 -41.7 7.0 MW-14S 1.75 22.0 6.80 3305 8.8 0.06 -144 1.5 Notes: C - Degrees celsius. SU - Standard units. uS/cm - Microsiemens per centimeter. NTU - Nephelometric Turbidity Units. mg/L - Milligrams per liter. my - Millivolts. PZ - Temporary stream peizometer. MW - Permanent monitoring well. NM - Not measured. * Hach field test kit. ** turbidity probe malfunction. � 4's SOL& z war Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: C&D Landfill. Inc. Site Location: Greenville, NC Weather Conditions- WELL/WATER LEVEL DATA: (measured from top of casing) a, Total Well Depth: i 2 b, Casing Material: r d. Screen Length: e. Depth to Water: g. Water Column: h. Well Volume: Well/Pieze ID: 1 Date: Project Number: Start Time: 133 U Finish Time: ji PVC c. Casing Diameter: f. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b_ Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment Used Make YSI Model .Ca �_ Serial Number d. Field Testing Equipment Calibration Documentation Water � �' r. ��/ ��� �► EnP, — e. Stabilization Criteria: +/-0.2 +/-0,2 +/- 5% f_ Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A - Explain below <10 +/-0.2 +/-10 Yes No- N/A OZ ❑ I� ❑ ❑ ❑ SAMPLE COLLECTION: Method: P ricialV, D,.—. Fe2+ = Q S mg/L Sample ID r, Container Type 40 ml glass 40 ml glass No. of Containers 3 3 Preservation HCL HCL Analysis App I VOCs by 8250 '.A ninxmia 0190 SIM Time 1 � App I Metals ID CST A-Q— Additional Comments: Signature: lw&.lt--� Date: -4 - Z \`f- SO/ Well/Piezo ID: P-�—?--) m�yHFM�O� Groundwater Sample Collection Record Client; C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville NC r� Weather Conditions: _S: \A,.f WELL/WATER LEVEL DATA: (me,sured from top of casing) a. Total Well Depth: _ T b. Casing Material: t# d. Screen Length: e. Depth to Water: g. Water Column: h. Well Volume: Date: Project Number: Start Time: S Finish Time: ti. PVC C. Casing Diameter: f. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) c. Field Testing Equipment Used 7P P. f--,n5 k. nonft,1 Make YSI Model d. Field Testing Equipment Calibration Documentation Serial Number 3%Qb Time Volume Removed (gals) Temp (°C) pH (units) Specific Conductivity ( } Turbidity (NTUs} DO (mg/L) ORP (mV) Color Pumping Rate (ml/min) Water Level (ft) 3.�1 a.�3 ���a, +r r s ��� I . C) 5'' 0 `� Q l-1 —i 0_ I.t r l 0� , e. Stabilization Criteria: +/-0.2 +/-0.2 +/- SV f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A - Explain below SAMPLE COLLECTION: Method: <10 +/-0.2 +/-10 Yes No N/A Er ❑ ❑ Fe2+ _ mg/L C) Zcr Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL k-T5 1 App I Metals Additional Comments: 5�.°f sot�,�� Well/Piezo ID: M— "? Groundwater Sample Collection Record Client: C&DLandfill Inc. Date: 9/PIO a 3 Project Name: C&D Landfill, Inc. Project Number: Site Location: Greenville NC Start Time: �f7� Weather Conditions: S 'f- Finish Time: i o WELL/WATER LEVEL DATA: (measured from top of casing) a. Total Well Depth: b. Casing Material: PVC c. Casing Diameter: l d. Screen Length: e. Depth to water: f. Pump Intake Depth: g. Water Column; h. Well Volume: WELL PURGING DATA: a. Purge Method: Low flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment Used Make YSI Model Serial Number d. Field Testing Equipment Calibration Documentation f l $� In screen 3 t.] ��()" Specific Conductivity Turbiditv�• � �Kant MW_M".1, 160m, Mvm��M�10- "IMIM. 0 KUM Im e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A- Explain below <10 +/-0.2 +/-10 Yes No N/A /A/` El ❑ [ LYJ ❑ ❑ SAMPLE COLLECTION: Method: Peristaltic Pu Fe2+ _ D , n mg/L Sample ID Container Type No. of Containers Preservation Analysis Time - 3 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL 1-FPd83^ App I Metals Additional Comments: Signature-. Date: CON Well/Piezo ID: �POh.M£M� Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: Greenvill NC Weather Conditions: WELL/WATER LEVEL DATA: (meosured from top of casing) a. Total Well Depth: b. Casing Material: I d. Screen Length: k e. Depth to Water: g. Water Column: h. Well Volume: Date: l a� Project Start Tirne: Finish Time: 3 O 76 PVC c. Casing Diameter. k 2 ! �t f. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment Used (� Q Make YSI Model f 0 1``J Serial Number d. Field Testing Equipment Calibration Documentation Time Volume Removed (gals) Temp ("C) pH (units) Specific Conductivity (µ5CI-) Turbidity (NTUs) DO ImR/L1 ORP (mV) Color Pumping Rate (ml/min) Water Level (ft) 5 1 1 +lrj. `s �r -300 o. 3tK0 a.l S� S oQ t;,40 1L11 .?D, 0,56 - tip v e. Stabilization Criteria: +/-0.2 +/-0.2 +/- S% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A-W Explain below <10 +/-0.2 +/-10 Yes No N/A ❑ L_rJ ❑ ❑ ❑ SAMPLE COLLECTION: Method: Peristaltic Pump Fe2+ = 3.6 mg/L Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 1010 40 ml glass 3 HCL M 5 1 -Hf4ei— App I Metals oh r Additional Comments: Signature: Date: Groundwater Sample Collection Record Client: _ C&D Landfill, inc. . Project Name: C&D Landfill, Inc. Site Location: Greenville, ANC Weather Conditions. —ISO WELL/WATER LEVEL DATA:�(ymeasured from top of casing) a. Total Well Depth: b. Casing Material: d. Screen Length: e. Depth to Water: g, Water Column: h. Well Volume: Well/Piezo ID: r PZZ - 'J Date: g 1 x 1° 3 Project Number: Start Time: Finish Time: 3 4 PVC c_ Casing Diameter: t, � WELL PURGING DATA: a. Purge Method: Low flow b. Acceptance Criteria: Minimum Required Purge Volume( well volumes) c. Field Testing Equipment Used Make YSl Model C( O P I V S d. Field Testing Equipment Calibration Documentation f. Pump intake In screen Depth: Serial Number ,, 111,11411 Turbidity E' Mj�f002 + i e. Stabilization Criteria: +/-0-2 40.2 +/- 5% <10 +/-0.2 +/-10 0 7(:r� f. Acceptance criteria pass/fail Yes No N/A Fe2+- mg/L Has required volume been removed? ❑❑ El 9 l_ 1 Has required turbidity been reached (<10)2 Have parameters stabilized? � ❑ ❑ If No or N/A— Explain below SAMPLE COLLECTION: Method: Peristaltic Pumo Sample ID Container Type No- of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL 1 `hFPd6M3-- App I Metals 0 � r Additional Comments: Signature: Date: W(p Well/Piezo ID: Groundwater Sample Collection Record Client: C&D Landfill Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville NC Weather Conditions: b---) o �!- , C 0 WELL/WATER LEVEL DATA:: (measured from top of casing) a. Total Well Depth: t b. Casing Material: d. Screen Length: l e. Depth to Water: g. Water column: h. Well Volume: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume {@ c. Field Testing Equipment Used Date: q b/ D _} Project Number: Start Time: (a 0 Q Finish Time: VA 3 D f� PVC c. Casing Diameter: ly 1 f. Pump Intake In screen Depth: well volumes) NA Make YSI Model f CO P i `A � Serial Number d. Field Testing Equipment Calibration Documentation ----------- e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A — Explain below <10 +/-0.2 +/-10 Yes No N/A :1 ❑ 0 ��Zr P El SAMPLE COLLECTION: Method: Peristaltic Pump Fe2+ = l V mg/L Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL 1 4-9ie�iCrl 1 NAIJQ3_ App I Metals 616^9, er Additional Comments: Signature: Date: 804 N Well/Piezo ID: r { Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville NC Weather Conditions: — (Ojs- WELL/WATER LEVEL DATA: (.tmeosured from top of casing) a. Total Well Depth: 5 b- Casing Material- l d. Screen Length: e. Depth to Water: g. Water Column: h. Well Volume: Date: Project Number: Start Time: a d Finish Time: i is 0 PVC c. Casing Diameter:' 0+, I. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flaw b. Acceptance Criteria - Minimum Required Purge Volume (@ well volumes) NA c. field Testing Equipment Used Make YSI Model Pry Serial Number 3S'P\b d. Field Testing Equipment Calibration Documentation Volume Removed Specific Conductivity Turbidity e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A - Explain below <10 +/-0.2 +/-70 Yes No N/A ❑H - ! ❑ l ❑ ❑ SAMPLE COLLECTION: Method: Peristaltic Pump Fe2+ = �0 `0 mg/L Sample ID Container Type No. of Containers Preservation Analysis Time - 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL ` Q 1 Ape I Metals Additional Comments: Signature: Date- Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville, NC g Weather Conditions: Sv AA WELL/WATER LEVEL DATA: (measured from top of casing) a. Total Well Depth- h Casing Material d. Screen Length: g. Water Column: e. Depth to Water: h. Well Volume: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ c. Field Testing Equipment Used Make *5+ Model d. Field Testing Equipment Calibration Documentation Well/Piezo ID: K Date: Iy Project Number: Start Time: Finish Time: H Q PVC r Casing Diamptpr- 2" E � 5 f. Pump Intake In screen Depth: well volumes) NA Serial Number Time volume Removed (gals) Temp (°C) pH (units) Specific Conductivity ( Turbidity (NTUs) DO (mg/L} ORP (mV) color Pumping Rate (ml/min) Water Level (ft) /� [J aC 3 .S l a + 5i TaL} - I - i 3 .� (1on �0, 1 LA e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% <10 +/-0.2 +/-10 f. Acceptance criteria pass/fail Yes No N/A Fe2+ mg/L Has required volume been removed? ❑ Has required turbidity been reached (<10)? ❑ ❑ Have parameters stabilized? ❑ ❑ If No or N/A— Explain below SAMPLE COLLECTION: Method: Peristaltic Pumo Sample ID Container Type No. of Containers Preservation Analysis Time M 40 mi glass 3 HCL App I VOCs by 8250 40 ml glass 3 HCL t, -WGKa4 SPA. Di.5 �[ 1 -HN9�-- App I Metals �73 ,r r10 �aIbA er Additional Comments: Signature: Date: �� 3 Client: C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: _ Greenville. NC r Weather Conditions: S"A^.N WELL/WATER LEVEL DATA: (measured from top of casing) a. Total Well Depth: b. Casing Material: d. Screen Length: g. Water Column: e. Depth to Water: h. Well Volume: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ c. Field Testing Equipment Used Make Yjr1-Model d. Field Testing Equipment Calibration Documentation Well/Piezo II]: Groundwater Sample Collection Record /� Date: 1 -3 o n Project Number: Start Time: j Finish Time: PVC c. Casing Diameter: ti f. Pump Intake Depth: pre,', © �As �� Y well volumes) Serial Number 2" In screen Time Volume Removed (gals} Temp {°ci pH (units) Specific Conductivity { �S Turbidity (NTUs) DO (mg/L) ORP (mV) Color Pumping state (m{/min Water evel (ft) Q o _ .L'Q - 5 © t a 93 o. t 1Q 3.-7 i Li 1 —tt"A .30 e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A— Explain below SAMPLE COLLECTION: Method: <10 +/-0.2 +/-10 Yes No N/A ❑ ❑ P ❑ ❑ Fe2->- _, , D mg/L 5ample ID Container Type No. of Containers Preservation Analysis Time - 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL t XN 1 App I Metals Additional Comments: Signature: Date: Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville, NC e Weather Conditions:-*-ANNy� "` G WELL/WATER LEVEL DATA: measured from top of casing) a. Total Well Depth: b. Casm; Material: d. Screen Length: e- Depth to Water: g. Water Column: h. Well Volume: Well/Piezo ID: Date: 1-9� Project Number: Starr: Time: (�} Finish Time: PVC c. Casing Diameter: 7" a f. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment Used Make -* - R,4,-160, Model Serial Number d. Field Testing Equipment Calibration Documentation Time Volume Removed (gals} Temp (10 pH (units) Specific Conductivity { } Turbidity (NTUs) DO (mg/L) ORP (mV) Color Pumping Rate (ml/min) Water Level (ft) .�Q 3_ `. b I✓&Jr C)o oa �3© -J7.LA U,LAS a _sf-, -4i `�©o C) q-s�S a q 'tip Q ; _a �D 3, �. 3. � nPA�_as 1 �� 04 �T W6 n� e. Stabilization Criteria: +/-0.2 +/-0.2 +/ S% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A - Explain below SAMPLE COLLECTION: Method: <10 +/-0.2 +/-10 Yes No N/A ❑ ❑ Fe2+ _ 21 < Q mg/L Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 S 40 ml glass 3 HCL 1 44N3-- Ap I Metals �r� Additional Comments: C Signature: , Date: 07 �14 Groundwater Sample Collection Record Client: C&D Landfill. Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville, NC Weather Conditions: Well/Pieza ID; Date: 61-14-73 Project Number: Start Time: I Finish Time: WELLIWATER LEVEL DATA' (meafured from top ofcasing) a. Total Well Depth: _5 b. Casing Material: PVC c. Casing Diameter: 2" d. Screen Length: S7 e. Depth to Water: �p f. Pump Intake In screen Depth: g. Water Column: h. Well Volume: WELL PURGING DATA: a_ Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume well volumes) NA c. Field Testing Equipment Used t� (� Make YSI Model [ CAN Serial Number 8 d_ Field Testing Equipment Calibration Documentation llemoved (gals) on! 1 Specific Conductivity i: Turbidity mo Pumping Rate . Water Level (ft) EN" e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% QO +/-0.2 +/-10 f. Acceptance criteria pass/fail Yes No N/A Fe2+ _ mg/L Has required volume been removed? ❑ ❑ Has required turbidity been reached (<10)? ❑ n ❑ Have parameters stabilized? ❑ ❑ EJ If No or N/A — Explain below SAMPLE COLLECTION, Method: Peristaltic Pump Sample I D Container Type No. of Containers Preservation Analysis Time KW 40 mi glass 3 HCL App I VOCs by 8260 L — 40 ml glass 3 HCL jD1.55 1. 1 HNO3 App I Metals S Additional Comments: Signature: Date: &s"C Sot& J f+' Well%l?ieZo lD: �4 W — U Groundwater Sample Collection Retort[ Client: _ C&D Landfill. Inc_ Project Name: C&D Landfill, Inc. Site Location: Greenville NC Weather Conditions: - .r n WELL/WATER LEVEL DATA: (measured from top of casing) a. Total Well Depth: L 6 _7 (3 h. Casing Material d. Screen Length: g. Water Column: e. Depth to Water: h. Well Volume: WELL PURGING DATA: a_ Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ c. Field Testing Equipment Used Make -k51-? Model d. Field Testing Equipment Calibration Documentation Date: I� ki-i / 4! Project Number_ Start Time: Finish Time: (� PVC c. Casing Diameter: 2" f. Pump Intake In screen Depth: well volumes) NA Serial Number Time Volume Removed (gals} Temp {°C} pli {units) Specific Conductivity ( } Turbidity {Pf7Us} DOPumping {mg/L} QRP{mV► Color Rate (mi/min) Water Level (ft) 04*( 0 `io o. a �3L3 .14 M i zi ,n (,.a� `-1, i p, L 5 — t/ e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or NIA — Explain below SAMPLE COLLECTION: Method: <10 +/-0.2 +/-10 Yes No N/A ❑ ❑ L� ❑ ❑ f ❑ ❑ Fe2+ _ )4 . () mg/L Sample ID Container Type No. of Containers Preservation Analysis Time M 40 mt glass 3 HCL App I VDCs by 8260 40 ml glass 3 HCL - Additional Comments: Signature: Date: WE Well/Piezo ID: {4-,k0 Groundwater Sample Collection Record Client: C&D Landfill, Inc. Date: Project Name: _ C&D Landfill, Inc. Project Number: Site Location: _ Greenville. NC Start Time: Weather Conditions: -- ) n Finish Time: WELL/WATER LEVEL DATA - measured from top of casing) a. Total Well Depth: �C - �a b. Casing Material: PVC " c. Casing Diameter: 2 d. Screen Length: e. Depth to Water: W , f. Pump Intake In screen Depth: g. Water Column: h. Well Volume: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment Used i i� Make YSI Model y J D5S Serial Number �n5� d. Field Testing Equipment Calibration Documentation Time Volume Removed (gals) Temp (^C} pH (units) Specific Conductivity { } Turbidity (NTUs) DO (mR/L) ORP (mV) Color Pumping Rate (ml/min) Water Level (ft) C J ) .� 3 6 — i 3�i 9'� C1n ,• • 4 0 rwLA 4 a 1 1 S a `�s - �C tI t) '-" ( 3,rA 0.C) D_ E <, 3�� LA D at.5 \- ', .7 33 Q D. w !3 3 f� e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A - Explain below <10 +/-0.2 +/-10 Yeess�/ No N/A ILJ ❑ ❑ ❑ ❑ SAMPLE COLLECTION: Method: Peristaltic Pum Fe2+ = 2 • Q mg/L Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 Q 40 ml glass 3 HCL ` S 1 -hHdG3 App I Metals Q�'4.er l�r Additional Comments: I \'rb- D/i �t �S AA-et3I�r'0� c�rrec � stilts�'.¢73 Ao e., u bi �,, sAe Signature: Date: Groundwater Sample Collection Record Client: C&D Landfill Inc. Project Name. C&D Landfill, Inc. Site Location: Greenville NC Weather Conditions: WELL/WATER LEVEL DATA: (rneclsvred from top of casing) a. Total WL-11 Depth; b. Casing Material: d. Screen Length: e. Depth to Water: g. Water Column; h. Well Volume; Well[Piezo ID: 14 VJ-12 Date: Project Number: Start Time: Finish Time: PVC t_ Casing Diameter: 2" f. Pump Intake in screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) NA c. Field Testing Equipment used Make YSi Model �.�� Serial Number d_ Field Testing Equipment Calibration Documentation ® • , . .Pumping M 11ttS1��I 1 ljp � at . F21,110"& 11M W MUM WOM1COMB12 � e. Stabilization Criteria: +/-0.2 +/-0.2 +/- S% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A— Explain below <10 +/-0.2 +/-10 Yes No N/A F-1 ❑ 2' L� ❑ ❑ ❑ ❑ SAMPLE COLLECTION; Method: Peristaltic Pump Fe2+ = 1 10 mg/L Sample ID Container Type No. of Containers Preservation Analysis Time •+ 1 40 ml glass 3 HCL App I VOCs by 8260 1 3® 40 ml glass 3 HCL L 1 HNO3 App i Metals Additional Comments: Signature: s Date: -i - Z Groundwater Sample Collection Record Client: C&D Landfill, Inc. Project Name: _ C&D Landfill, Inc. Site Location: Greenville, NC Weather Conditions: WELL/WATER LEVEL DATA: (meFsured from top of casing) a. Total Well Depth:} b. Casing Material: 1 d. Screen Length: l e. Depth to Water: g. Water Column: h. Well Volume: Well/Pieza ID: KW - 13 Date: Project Number: Start Time;�LTD Finish Time: PVC c. Casing Diameter Z" f. Pump Intake In screen Depth: WELL PURGING DATA: a. Purge Method: Low -flow b. Acceptance Criteria: Minimum Required Purge Volume (Qa well volumes) NA c. Field Testing Equipment Used Make YSI Model Serial Number6©Fl6 d. Field Testing Equipment Calibration Documentation i e� Turbidity e. Stabilization Criteria: +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbidity been reached (<10)? Have parameters stabilized? If No or N/A — Explain below <10 +/-0.2 +/-10 Yee -sue/ No N/A SAMPLE COLLECTION: Method: Peristaltic Pump Fe2+ = —1 X mg/L Sample ID Container Type No. of Containers Preservation Analysis Time 40 ml glass 3 HCL App I VOCs by 8260 40 ml glass 3 HCL { 44,51F5 tAL- 1 HNO3 App I Metals wvt* Additional Comments: Signature: _ I Date_ —13 - L Groundwater Sample Collection Record Client. C&D Landfill Inc. Project Name: C&D Landfill, Inc. Site Location: Greenville, NC Weather Conditions: WELL/WATER LEVEL DATA: {mepssured from top of casing) a. Total Well Depth: 1 b. Casing Material: d. Screen Length: e. Depth to Water: g. Water Column: h. Well Volume: Well/Pieza 0: H W'- f 4-5 Date: Project Number: Start Time: Finish Time: PVC c. Casing Diameter: WELL PURGING DATA: a. Purge Method: Low -flow b_ Acceptance Criteria: Minimum Required Purge Volume (@ well volumes) c. Field Testing Equipment Used Make YSI Model . MO FLU-S d. Field Testing Equipment Calibration Documentation f. Pump Intake Depth: 2„ In screen Serial Number 389 8 • ®® i • ..Rate Pumping wimp ffLIM ----------- ----------- e. Stabilization Criteria. +/-0.2 +/-0.2 +/- 5% f. Acceptance criteria pass/fail Has required volume been removed? Has required turbfdity been reached (C10)? Have parameters stabilized? If No or N/A— Explain below <10 +/-0.2 +/-10 Yes No N/A 101/ ❑ L~! OL ❑ ❑ IJ ❑ ❑ SAMPLECOLLEGTION: Method: PeristalticPumn Fe2+ = l 4 T mg/L Sample ID Container Type No_ of Containers Preservation Analysis Time 40 ml glass 3 HCL App 1 VOCs by 8260 40 ml glass 3 HCL �j µ� 1 HNO3 App I Metals SVLfVV-14- 6 Additional Comments: Signature:7qu Date: —IT— f3 Table B Summary of ASD Soil Analytical Results - September 2023 C&D Landfill, Inc Greenville, North Carolina Analyte Residential Health Based PSRGs Protection of Groundwater PSRGs Units CSS-1 CSS-2 CSS-3 CSS-4 USS-1 USS-1-DUP USS-2 USS-3 USS-4 DSS-1 DSS-2 DSS-3 DSS-4 9/5/2023 9/5/2023 9/5/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 9/6/2023 Metals by EPA Method 6020B Antimony 6,300 900 ug/kg <311 <266 <264 <279 <270 <270 <302 <277 <309 <1120 <267 <288 <276 Arsenic 680 5,800 ug/kg 386 297 <264 3,150 <270 330 643 <277 469 1,010 <267 859 324 Barium 3,100,000 580,000 ug/kg 7,300 3,140 3,600 58,100 9,110 11,000 17,900 13,800 15,500 36,100 6,990 29,700 13,300 Beryllium 31,000 63,000 ug/kg <311 <266 <264 855 <270 <270 <302 <277 <309 <279 <267 326 <276 Cadmium 1,400 3,000 ug/kg <311 <266 <264 <279 <270 <270 <302 <277 <309 <279 <267 <288 <276 Chromium* 23,000,000 360,000,000 ug/kg 4,580 1,820 2,620 36,900 3,620 4,330 14,500 3,010 5,740 8,630 2,220 13,700 3,730 Cobalt 4,700 900 ug/kg 661 <265 436 4,340 277 331 1,230 343 422 1,780 344 1,610 571 Copper 630,000 700,000 ug/kg 1,490 492 653 19,400 989 1,370 1,680 757 1,030 3,450 576 3,330 1,040 Iron 11,000,000 150,000 ug/kg 3,310,000 2,030,000 1,290,000 7,150,000 1,560,000 2,090,000 11,000,000 1,120,000 1,610,000 7,390,000 864,000 8,430,000 2,330,000 Lead NS 270,000 ug/kg 2,530 1,080 1,220 11,600 2,980 3,760 8,810 4,120 6,340 7,240 2,450 7,890 4,000 Manganese 380,000 65,000 ug/kg 5,580 2,780 3,960 267,000 6,510 7,590 14,600 9,830 5,730 40,200 6,430 32,600 32,800 Nickel 310,000 130,000 ug/kg 1,790 610 929 9,680 935 1,030 3,110 1,280 1,620 4,400 986 4,780 1,450 Selenium 78,000 2,100 ug/kg <311 <265 <264 808 <270 <270 363 <277 420 535 <267 498 372 Silver 78,000 3,400 ug/kg <311 <266 <264 <279 <270 <270 <302 <277 <309 <279 <267 <288 <276 Thallium 160 2,800 ug/kg <311 <266 <264 <279 <270 <270 <302 <277 <309 <279 <267 <288 <276 Vanadium 78,000 140,000 ug/kg 6,750 2,720 <1320 28,600 5,030 6,900 32,100 4,350 8,080 23,000 2,550 27,000 5,250 Zinc 4,700,000 1,200,000 ug/kg 3,810 <2660 3,060 52,000 <2700 3,300 7,100 3,510 4,340 13,500 <2670 11,500 4,340 General Chemistry Total Organic Carbon NS NS % <0.10 <0.10 <0.10 1.8 0.18 0.20 0.37 0.24 2.2 0.13 <0.10 0.28 <0.10 Notes: PSRGs - NCDEQ Preliminary Soil Remediation Goals, February 2024. ug/Kg - micrograms per kilogram or parts per billion. NS - Not specified. Bold - Detected constituent. < # - Not detected at or above the indicated Method Quantitation Limit (MQL) for metals and Reporting Limit (RL) for TOC. * Chromium(III), Insoluble Salts Blue highlighted cell - concentration exceeds the Residential Health Based PSRG. Salmon highlighted cell - concentration exceeds the Protection of Groundwater PSRG. 1of1 Table C Summary of ASD Groundwater Analytical Results - September 2023 C&D Landfill, Inc. Construction and Demolition Debris Landfills Greenville, North Carolina Analyte NC 2L Groundwater Standard or IMAC Units MW-2S M BPS MW-3S MW-3A MW-5 MW-6 MW-8 MW-12S MW-13 MW-14S 9/14/2023 9/14/2023 9/14/2023 9/13/2023 9/14/2023 9/14/2023 9/15/2023 9/14/2023 9/13/2023 9/15/2023 VOCs by EPA Method 8260D Acetone 6000 ug/L 24 24 23 10 5 <5 17 21 6 14 Benzene 1 ug/L <0.5 <0.5 1 <0.5 <0.5 <0.5 <0.5 1 1 1 cis- 1,2-Dichloroethene 70 ug/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1 <0.5 1,4-Dioxane 3 ug/L <150 163 <150 <150 < Tetrahydrofuran 2000 ug/L 23 21 35 22 <10 <10 16 42 12 37 Vinyl Chloride 0.03 ug/L 1-u.0 <0.5 0.7 2 1 Metals by EPA Methods 200.7 and 200.8 Antimony 1 ug/L <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 0.34 J Arsenic 10 ug/L 18 20 40 35 9 9 28 53 10 19 Barium 700 ug/L 451 467 1,332 567 187 512 64 507 277 788 Beryllium 4 ug/L <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 Cadmium 2 ug/L <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 Calcium NS ug/L 308,250 334,400 259,050 177,545 153,440 214,520 360,740 205,570 263,660 370,090 Chromium 10 ug/L 11 12 25 16 4.6 J 6.4 22 50 5.4 35 Cobalt 1 ug/L 3.2 3.4 3.5 5.1 1.7 2.2 2.2 3.9 3.4 2.9 Copper 1000 ug/L 0.72 J 0.71 J <0.26 <0.26 <0.26 0.62 J <0.26 <0.26 0.44 J <0.26 Iron 300 ug/L 12,099 12,149 23,875 22,090 12,425 11,114 39,778 908 25,929 1,805 Lead 15 ug/L 0.20 J 0.20 J <0.09 <0.09 <0.09 0.12 J <0.09 <0.09 0.46 J 0.19 J Manganese 50 ug/L 1,132 1,202 1,993 1,335 427 904 1,205 586 506 915 Nickel 100 ug/L 2.5J 2.7J 3.1 J 3.4J 1.6J 1.9 J 1.6J 3.0J 5.1 J 3.0J Selenium 20 ug/L 1.01 1.01 0.901 1.01 0.48J 0.46J 0.54J 2.5J 2.0J 1.91 Silver 20 ug/L <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 Thallium 2 ug/L 0.34 J <0.13 <0.13 0.15 J <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 Vanadium 7 ug/L 7 8 10 7 1 12 4 31 4 13 Zinc 1000 ug/L <0.34 <0.34 0.48 J 0.52 J 0.91 J 0.78 J 0.68 J 0.48 J 17 0.71 J MNA Parameters Nitrate+Nitrite as N 10,000 ug/L 1,890 1,880 <40 180 <40 0.41 110 <40 <40 260 Chloride 250,000 ug/L 138,000 140,000 222,000 135,000 64,000 58,000 124,000 182,000 78,000 220,000 Sulfate 250,000 ug/L 343,000 366,000 57,600 159,000 188,000 84,500 268,000 <5000 236,000 <5000 Sulfide NS ug/L <4000 <4000 <4000 <4000 <4000 <4000 <4000 <4000 <4000 5,600 Alkalinity as CaCO3 NS ug/L 980,000 990,000 1,660,000 1,180,000 520,000 790,000 560,000 1,460,000 730,000 1,470,000 Total Dissolved Solids 500,000 ug/L 1,800,000 1,670,000 2,000,000 1,400,000 810,000 930,000 1,700,000 1,700,000 1,100,000 1,900,000 Total Organic Carbon NS ug/L 117,600 109,200 184,700 131,600 54,480 63,240 121,000 188,600 82,110 187,100 Carbon Dioxide NS ug/L 212,000 H 220,000 H 108,000 H 296,000 H 72,000 H 188,000 H 280,000 H 312,000 H 340,000 H 298,000 H Methane NS ug/L 700 753 1,480 1,830 268 569 1,410 2,600 863 2,140 Ethane NS ug/L <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 0.53 <0.32 <0.32 <0.32 Ethene NS I ug/L 1 1.2 1 <0.43 1 1.9 1 0.74 1 <0.43 1 <0.43 1 1.7 1 2.1 1 0.76 1 3.1 Notes: NC 2L Groundwater Standard or IMAC - 15A NCAC 02L Groundwater Quality Standards (April 2022); NC Interim Maximum Allowable Concentrations (IMACs) (January 2024). NS - Not specified. Bold - Detected constituent. < # - Concentration does not exceed the indicated laboratory Method Detection Limit (MDL). J - Estimated value > or = the Method Detection Limit (MDL) and < the Method Reporting Limit (MRL). H - Sample analyzed past holding time. Green highlighted cell indicates value is greater than the NC 2L Groundwater Standard or IMAC. Purple font - MDL exceeds the 2L Standard. 1of1 Table D Summary of ASD GSI Piezometer Analytical Results - September 2023 C&D Landfill, Inc. Construction and Demolition Debris Landfills Greenville, North Carolina Analyte NC 2L Groundwater Standard or IMAC Units PZ-1 PZ-2 PZ-3 PZ-3 DUP PZ-4 PZ-5 PZ-8 PZ-9A PZ-10 PZ-11 9/19/2023 9/19/2023 9/20/2023 9/20/2023 9/21/2023 9/21/2023 9/28/2023 9/29/2023 9/29/2023 9/29/2023 VOCs by EPA Method 8260D Acetone 6000 ug/L <5 13 <5 <5 6 <5 21.9 J <9.06 12.6 24.3 Benzene 1 ug/L <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.24 0.71 <0.24 1.59 1,2-Dichloroethane 0.4 ug/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.03 J <0.02 <0.02 <0.02 cis- 1,2-Dichloroethene 70 ug/L <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.25 <0.25 <0.25 <0.25 1,2-Dichloropropane 0.6 ug/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.04 <0.04 <0.04 0.04 J 1,4-Dioxane 3 ug/L <150 <150 <150 <150 <150 <150 93.4 63.3 14.6 138 Tetrahydrofuran 2000 ug/L <10 54 <10 <10 19 <10 37 23.8 20.5 70 Toluene 600 ug/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.23 <0.23 <0.23 0.36 J Vinyl Chloride 0.03 ug/L <0.5 3 <0.5 <0.5 <0.5 <0.5 <0.12 <0.12 <0.12 <0.12 Xylenes (Total) 500 ug/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.68 <0.68 <0.68 0.79 J Metals by EPA Methods 200.7 and 200.8 Antimony 1 ug/L <0.30 0.81 J 0.56 J 0.35 J <0.30 <0.30 0.39 J 0.41 J 0.38 J 0.38 J Arsenic 10 ug/L 0.43 J 9 0.25 J 0.38 J 17 0.39 J 21 3.6 J 13 38 Barium 700 ug/L 58 553 201 202 180 124 849 166 618 717 Beryllium 4 ug/L 0.20 J 0.19 J 0.15 J 0.16 J <0.10 0.15 J <0.10 <0.10 <0.10 0.21 J Cadmium 2 ug/L <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 Calcium NS ug/L 3,190 480,420 11,200 11,255 399,150 11,627 284,900 306,490 303,790 270,030 Chromium 10 ug/L 2.4 J 30 0.44 J 0.54 J 17 1.9 J 12 9.6 10 64 Cobalt 1 ug/L 0.39 J 3.2 1.0 0.96 J 2.5 0.26 J 6.7 3.2 2.2 5.9 Copper 1000 ug/L 3 J 3 J 6 J 5 J 5 J 3 J 0.79 J 6 J 0.29 J 3 J Iron 300 ug/L 884 32,819 106 119 18,117 470 25,105 230 16,933 14,662 Lead 15 ug/L 2.1 J <0.09 0.43 J 0.38 J 0.65 J 0.51 J 0.12 J <0.09 0.20 J 1.3 J Manganese 50 ug/L 18 626 83 84 2,386 81 3,306 119 354 2,702 Nickel 100 ug/L 1.6J 3.3J 1.4J 1.4J 4.0J 0.61 J 3.9J 2.5J 1.6J 21.3 Selenium 20 ug/L 0.44 J 2.5 J <0.43 <0.43 0.86 J <0.43 1.0 J 1.7 J 1.2 J 2.0 J Silver 20 ug/L 0.20 J <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 Thallium 2 ug/L 0.54 J <0.13 <0.13 0.38 J <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 Vanadium 7 ug/L 6 5 3 3 5 7 6 0.58 J 1 38 Zinc 1000 ug/L 8.6J 1.5J 14 13 12 3.6J 9.7J 8.81 7.3J 12 MNA Parameters Nitrate+Nitrite as N 10,000 ug/L 60 <40 6,900 6,000 <40 3,040 <40 <40 <40 <40 Chloride 250,000 ug/L 3,000 196,000 16,000 17,000 60,000 15,000 162,000 165,000 72,000 245,000 Sulfate 250,000 ug/L 15,800 156,000 10,300 9,800 361,000 14,000 185,000 133,000 44,900 5,900 Sulfide NS ug/L <2000 <2000 <2000 2,100 <100 <100 141 J 145 J <100 102 J Alkalinity as CaCO3 NS ug/L 3,000 1,330,000 8,000 1,180,000 8,000 7,000 1,470,000 710,000 950,000 1,880,000 Total Dissolved Solids 500,000 ug/L 64,000 1,900,000 120,000 110,000 1,800,000 92,000 1,700,000 1,700,000 1,500,000 2,300,000 Total Organic Carbon NS ug/L 3,330 165,000 <129 <129 119,000 <129 137,600 106,200 61,170 278,400 Carbon Dioxide NS ug/L 84,000 H 448,000 H 36,000 H 28,000 H 236,000 H 32,000 H 292,000 H 286,000 H 280,000 H 408,000 H Methane NS ug/L 23.7 959 83.5 84.6 229 34.6 1,050 4,890 102 1,270 Ethane NS ug/L <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.39 J 0.77 J <0.32 <0.32 Ethene NS I ug/L I <0.16 0.24 <0.16 <0.16 <0.16 <0.16 0.53 J 3.5 <0.43 1.1 Notes: NC 2L Groundwater Standard or IMAC - 15A NCAC 02L Groundwater Quality Standards (April 2022); NC Interim Maximum Allowable Concentrations (IMACs) (January 2024). NS - Not specified. Bold - Detected constituent. < # - Concentration does not exceed the indicated laboratory Method Detection Limit (MDL). J - Estimated value > or = the Method Detection Limit (MDL) and < the Method Reporting Limit (MRL). H - Sample analyzed past holding time. Green highlighted cell indicates the value is greater than the NC 2L Groundwater Standard or IMAC. 1of1 Table E Summary of ASD GSI Surface Water Analytical Results - September 2023 C&D Landfill, Inc. Construction and Demolition Debris Landfills Greenville, North Carolina Analyte NC 213 Metals Standards Acute Toxicity Class C NC 213 Metals Standards Chronic Toxicity NC 213 Surface Water Standards Class C Units SW-GS-1 SW-GS-2 SW-GS-3 SW-GS-4 SW-GS-5 SW-GS6 SW-GS-7 SW-GS-8 SW-GS-8 DUP SW-GS-9 SW-GS-10 9/15/2023 9/15/2023 9/18/2023 9/18/2023 9/18/2023 9/18/2023 9/19/2023 9/18/2023 9/18/2023 9/18/2023 9/19/2023 VOCs by EPA Method 8260D Acetone NS NS 2000a ug/L <5 <5 9 17 6 5 55 <5 <5 <5 12 1,4-Dioxane NS NS 80a ug/L <150 <150 <150 <150 <150 <150 <150 Metals by EPA Methods 200.7 and 200.8 Antimony NS NS 640b ug/L <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 <0.30 Arsenic 340 150 NS ug/L 1.1 J 4.4 J 5.6 20 6.8 6.6 11 3.5 J 4.0 J 1.2 J 4.2 J Barium NS NS 21'000a ug/L 108 227 193 454 232 253 224 94.5 109 121 344 Beryllium 65 6.5 NS ug/L <0.10 <0.10 0.5 J <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 Cadmium 0.75 0.25 NS ug/L <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 Calcium NS NS NS ug/L 27,319 100,985 98,019 235,690 119,900 104,150 238,160 102,290 118,180 51,332 210,070 Chromium 180 24 NS ug/L 0.66 J 6.8 8.7 26 12 11 21 5.8 8.2 2.2 J 7.9 Cobalt 16a 1.6a NS ug/L 0.24 J 1.1 1.4 2.5 1.6 3.2 2.1 0.82 J 1.3 0.66 J 2.6 Copper 3.6 2.7 NS ug/L 2 J <0.26 <0.26 1 J <0.26 2 J 2 J 2 J 3 J <0.26 0.54 J Iron NS NS 1000b ug/L 877 4,101 2,891 8,823 3,337 9,004 9,976 7,256 11,294 1,857 29,709 Lead 14 0.54 NS ug/L 0.22 J 0.41 J <0.09 1.5 J 0.14 J 3.8 J 2.1 J 3.1 J 4.6 J 0.36 J 0.41 J Manganese NS NS 100b ug/L 93 310 325 646 410 371 401 106 149 168 771 Nickel 140 16 NS ug/L 0.30J 0.991 1.2J 2.7J 1.6J 2.1 J 2.0J 2.0J 3.0J 0.65J 1.4J Selenium NS NS 5 ug/L <0.43 0.61 J 0.70 J 11 0.62 J 0.65 J 1.3 J <0.43 <0.43 <0.43 0.50 J Silver 0.30 0.06 NE ug/L <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 Thallium NS NS 2a ug/L <0.13 <0.13 <0.13 <0.13 <0.13 0.30 J <0.13 <0.13 <0.13 <0.13 <0.13 Vanadium NS NS NS ug/L 0.64 J 2 2 4 2 6 3 9 13.0 0.56 J 0.69 J Zinc 36 36 NS ug/L 5.2 J 7.7 J 1.8 J 9.3 J 1.9 J 25 18 12 19 1.3 J 2.6 J Notes: NC 2B Surface Water Standards - 15A NCAC 02B Surface Water Quality Standards (September 2022) - currently being revised. - NC In -stream Target Values. b - EPA National Recommended Water Quality Criteria. NS - Not specified. Bold - Detected constituent. < # - Concentration does not exceed the indicated laboratory Method Detection Limit (MDL). J - Estimated value > or = the Method Detection Limit (MDL) and < the Method Reporting Limit (MRL). Green highlighted cell indicates the value is greater than the NC 2B Standard for Class C surface water. Salmon highlighted cell indicates the value is greater than the NC 2B Standard for Chronic Toxicity. Purple font - MDL exceeds the 2B Standard. 1of1 Figure 1 Summary of GSI locations 1 and 2 • Groundwater discharge conditions prevail at GSI locations. • Table shows co -located GSI groundwater (GW) and surface water (SW) Metals of Interest (MOI) data compared to local well and surface water data. The max value for each MOI in each group is bolded. • Time -history data at SW-4 are consistent with that collected at SW-GS-1 and SW-GS-2. • All data are unfiltered totals. Standards shown are for the dissolved phase. • Data support that the MOTs are attenuated across the GW- SW interface. Location MOT [ug/L] As total Cr Co v Fe Mn well MW-19 0.26 0.22 0.75 0.81 4,187 118 well MW-16 13 17 0.76 15 36,106 477 GSI GW PZ-1 0.43 2.4 0.39 6 884 GSI SW SW-GS-1 1.1 OM0.24 0.64 877LL SW SW-4 130.81 0.28 1 597 well MW-15 2 3.4 1.4 3 2,494 215 well MW-14S 19 35 2.9 13 1,805 915 well MW-13 10 5.4 3.4 4 25,929 506 GSI GW PZ-2 9 30 3.2 5 32,819 626 GSI SW SW-GS-2 4.4 6.8 1.1 2 4,101 310 In stream aquatic life_ fresh surface water_ Class C [u i'L] mol NC 2B or Target Value toxicity EPA NRYM Acute Chronic As 340 150 N5 Cr III 180 24 N5 Cr VI 16 11 N5 Ca 16 1.6 N5 Fe INS N5 1000 Mn IN N5 N5 V IN N5 N5 Figure 2 Summary of GSI locations 3, 4 and 5 • Groundwater discharge conditions prevail at GSI locations. • Table shows co -located GSI groundwater (GW) and surface water (SW) Metals of Interest (MOI) data compared to local well and surface water data. The max value for each MOI in each group is bolded. • All data are unfiltered totals. Standards shown are for the dissolved phase. • Data support that the MOls are attenuated across the GW- SW interface. Location MOI [ug/L] As total Cr Cc v Fe Mn well MW-13 10 5.4 3.4 4 25,929 506 well MW-12S 53 50 3.9 31 908 586 GSI GW PZ-3 0.25 0.44 1 3 106 83 di GSI SW SW-GS-3 5.6 8.7 1.4 2 2,891 325 SW SW-3 4.9 1 4.8 1 1.6 1 2 1 1,763 82 well MW-12S 53 50 3.9 31 908 586 well MW-8 28 22 2.2 4 39,778 1205 well GSI GW MW-tt PZ-4 5.9 3.8 0.79 t 13,039 231 17 17 2.5 5 18,117 2,386 GSI SW SW-GS-4 20 26 2.5 4 8,823 646 SW SW-3 4.9 4.8 1.6 2 1,763 82 well MW-12S 53 50 3.9 31 908 586 well MW-3A 35 16 5.1 7 22,090 1,335 well MW-3S 40 25 3.5 10 7 23,875 1,993 GSI GW PZ-5 0.39 1.9 0.26 470 81 GSI SW SW-GS-5 6.8 12 1.6 2 3,337 410 SW SW-3 4.9 4.8 1.6 2 1,763 82 Figure 3 Summary of GSI Locations 6, 8 and 11 In stream aquatic life. fresh surface water. Class C [ue L] NC 2B or Target Value Groundwater discharge conditions prevail at GSI locations and 11. Location 6 did not produce groundwater in a tim( manner, discharge assumed. Table shows co -located GSI groundwater (GW) and surface water (SW) metals of interest (MOI) data compared to local well and surface water data. The max value for each MOI in each group is bolded. All data are unfiltered totals. Standards shown are for tl dissolved phase. Data support that the MOls are attenuated across the GW-Sb interface. Location MOI [ug/L] As total Cr Co v Fe Mn well MW-3A 35 16 5.1 7 22,090 1,335 well MW-3S 40 25 3.5 10 23,875 1,993 well MW-5 9 4.6 1.7 1 12,425 427 GSI GW PZ-6 NM NM NM NM NM NM GSI SW SW-GS-6 1 6.6 11 3.2 6 9,004 371 well well GSI GW MW-25 MW-5 PZ-11 18 9 38 11 4.6 64 3.2 1.7 5.9 7 1 38 12,099 12,425 14,662 1,132 427 2,702 GSI SW SW-GS-11 NM NM NM NM NM NM well MW-2S 1 18 11 3.2 7 12,099 1,132 GSI GW PZ-8 21 12 6.7 6 25105 3,306 GSI SW SW-GS-8 3.5 5.8 1 0.82 9 7,256 106 Figure 4 Summary of GSI locations 7, 10 and 9A In stream aquatic life. fresh surface water. Class C [- LI MOI NC 28 or Target Value toxicity EPA NRWQC Acute I Chronic • Groundwater discharge conditions prevail at GSI locations 10 and 9A. Location 7 did not produce groundwater in a timely manner, discharge assumed. • Table shows co -located GSI groundwater (GW) and surface water (SW) metals of interest (MOI) data compared to local well and surface water data. The max value for each MOI in each group is bolded. • All data are unfiltered totals. Standards shown are for the dissolved phase. • Data support that the MOTs are attenuated across the GW-SW interface. MOI [ug/L] Location As total Cr Co V I Mn well MW-8 28 22 2.2 4 39,778 1,205 well MW-11 5.9 3.8 NM 0.79 1 NM 13,039 NM 231 NM _ GSI GW PZ-7 NM NM GSI SW SW-GS-71 11 21 2.1 3 9,976 401 well MW-4 2.6 2 0.05 3 1,732 108 well MW-7 9 10 12 1 1 22,081 804 GSI GW PZ-10 13 10 2.2 16,933 354 GSI SW SW-GS-10 4.2 79 2.6 0.69 29,709 771 SW SW-1 2.3 3.6 0.36 1.4 NM NM well GSI GW MW-6 PZ-9A 9 3.6 6.4 1 9.6 2.2 12 0.58 11,114 904 1 3.2 230 119 GSI SW SW-GS-9 1.2 0.48 2.2 0.66 0.56 1 0.38 1,857 NM 168 NM SW SW-2 0.71 1 0.24 Figure 5 Summary of Time -Trends at Facility Compliance Surface Water Locations from 2017 to 2023. 1D /I 4, PARAMETER _ �T 8 SW -4 35 Arsenic 6 • 34 25 z Chromium, total 4 20 _ —0--Cobalt r 3 2 15 a 10 .�. �Vanadum 1 5 --m—Turbidrty (Field) 0 0 lipBCD, y $ roh y'tk Stiff} 1ti 12 10 -- g SW-3 �T 7° PARAMETERCI �A Beni 500 � a Chromium, total 6 ti 30 ¢ 20 Vanadium 2 to " �Turbidrty {Field) 0 0 M1'L1�1 g, 'OP •9 ��pya .D [y�ry ti �� ,�. �oy3 -11� ��tiny Hjl 1 oy � 6yry 1 6ti 1V ,y�1 1 16 SW —2 506 PARAMET8i ,T 450 1 2 12 400 �Arseric 350 F 1 300 z Chromium, total 0.8 4 0.5 250 Cobalt 200 1 0.4 150 100 2 �Varnadum 02 50 --e--Turbdrty (Field) 0 0 �l y'v��y�yti�l~pF eyv�'ya��ti�ay'v�ti�ti��at'" 80 SW —1 403500 PARAMETER 70 300 - —a—Arsenic 60 50 250 z _.@_Chromiurr4 total O 40 200 t - —Cobalt 150 20 100 Vanadium 10 50Tuhidiry {Field] 0 0 4'Ll��bl� 4'Sl� ,y'tary4 .4'Sl �S` 81�o0 • SW-1 and SW-4 are considered background. • Missing metals of interest (MOI) data point means the sampling location was dry • All data are unfiltered totals. Standards shown are for the dissolved phase. • Concentrations are affected by turbidity In stream a uatic life. fresh surface water. Class C [ug L] MCI NC 2B or Target Value toxicity Acute Chronic EPA NRWQC As 340 150 NS Cr III 180 24 NS Cr VI 16 11 NS co 16 1.6 NS Fe NS NS 1000 Mn NS NS NS V NS NS NS