COMPLIANCE INFO_8/1/2025/ ANNUAL CORRECTIVE ACTION

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AMW-34 (<0.50) AMW-28 (<0.50) AMW-24SR (<0.50)* AMW-22 (7.2) AMW-31 (1.5) AMW-31S (0.71)* AMW-13 (4.8) AMW-13B (<0.50)* MW-10 (2.0) [2.1] AMW-34S (<0.50) AMW-22S (107.0) AMW-33S (<0.50) MW-1A (<0.50)* MW-1B AMW-36S (<0.50) [<0.50] AMW-33 (<0.50) AMW-36 (<0.50) AMW-34M (<0.50)AMW-35S (<0.50) AMW-18B (4.8) MW-13B MW-13A (<0.50) MW-2B MW-14B MW-14A (<0.50) AMW-5 AMW-3 MW-20 AMW-1 (7.6)AMW-5R (<0.50) MW-23R (<0.50) AMW-2 (<0.50) MW-21 (<0.50) MW-15 (<0.50) AMW-38S (<0.50) MW-26 (<0.50) MW-17R (<0.50) MW-25 (<0.50) AMW-18 (<0.50)* AMW-24R (10.8) AMW-35 (<0.50) AMW-37S (0.51) AMW-37 (<0.50) MW-22 (<0.50) MW-16 (<0.50) MW-2A (<0.50) AMW-29S (2.6) AMW-30S (<0.50)* AMW-30 (2.90) MW-17 MW-18 MW-19 AMW-23S (<0.50)* AMW-23D (<0.50)* AMW-23M (9.9) AMW-39S (<0.50) AMW-6 (0.73) MW-24 (<0.50) MW-3B MW-3A (<0.50) MW-19R (<0.50) AMW-10 AMW-19 (<0.50) AMW-19BR (<0.50) AMW-46 (6.0) AMW-45 (1.9) AMW-44 (1.0) AMW-29(9.3) AMW-40M (<0.50) AMW-40S (<0.50) AMW-42M (<0.50) AMW-47 (<0.50) AMW-48 (<0.50) AMW-49 (<0.50) AMW-52S (3.7) AMW-52M (3.6) PZ-2 PZ-2 (NS) PZ-1 PZ-3 PZ-1 (NS) 7833-MW-03 7833-MW-02 7898-A 8106-A DW-9690 AMW-32 (<0.50) AMW-21 (<0.50) AMW-21S (0.52) AMW-12 (0.68) AMW-14 (<0.50) AMW-32S (<0.50) AMW-41M (<0.50) AMW-41S (<0.50) AMW-43M (<0.50) AMW-43S (<0.50) AMW-51S (2.5)AMW-50S (28.0)* PZ-3 (NS) 7833-MW-04 AMW-51M (12.5) AMW-42S (<0.50) 7833-MW-01 AMW-57S (<0.50) AMW-57M (<0.50) AMW-55 (<0.50) AMW-58S (20.4) AMW-59M (1.0) AMW-59S (1.2) AMW-60M (30.1) AMW-60S (6.5)* AMW-61S (4.7)* AMW-61M (35.6) AMW-58M (6.8) AMW-7 (<0.50)AMW-56 (13.5) AMW-26R (5.5) AMW-25 (1.9) AMW-11 (<0.50) AMW-4 (<0.50) AMW-62 (1.6)AMW-63 (9.3) AMW-64 (1.0) AMW-54 AMW-54R (11.7) EW-1 EW-4 EW-5 EW-2EW-3R CDCR-EW-3 (NS) CDCR-EW-2 (NS) CDCR-EW-1 (NS) (10.8) (NS) (5.3) (7.7) AREA - 93435 sq.ft AREA - 269502 sq.ft AREA - 742142 sq.ft AMW-50M (55.8) CDCR-EW-5 (NS) AREA (1.0) - 37076463 sq.ft 1.0 1.0 1.0 100 75 CDCR-EW-4 (NS) AREA (100) - 10990 sq.ft AREA (75) - 40905 sq.ft AREA (50) - 255353 sq.ft AREA (25) - 1173703 sq.ft 1.05025AMW-22(7.2) AMW-22S (107.0) PZ-2 (NS) PZ-1 (NS) AMW-51S (2.5) AMW-50S (28.0)* PZ-3(NS) AMW-51M (12.5) AMW-58S (20.4) AMW-61S (4.7)* AMW-61M (35.6) AMW-58M (6.8) CDCR-EW-3 (NS) CDCR-EW-2 (NS) CDCR-EW-4 (NS) CDCR-EW-1 (NS) AMW-50M (55.8) CDCR-EW-5 (NS) 100 75 AMW-60M (30.1) AMW-60S (6.5)*5025FOURTH QUARTER 2024 TVOC ISOCONCENTRATIONS 2C:\Users\km7685\DC\ACCDocs\Arcadis ACC US\AUS-99999999-REP SERV_FORWARD INC_MANTECA_CA\Project Files\10_WIP\10T_ARC_ENV\2025\01-DWG\GWM-2025Q2-F02-TVOC CONTOUR.dwg LAYOUT: 2 SAVED: 7/23/2025 3:55 PM ACADVER: 24.2S (LMS TECH) PAGESETUP: ----PLOTSTYLETABLE: ---- PLOTTED: 7/23/2025 3:55 PM BY: K, MAHENDRAFORWARD,INC. 9999 SOUTH AUSTIN ROAD SAN JOAQUIN COUNTY, CALIFORNIA 2025 ANNUAL CORRECTIVE ACTION EVALUATION REPORT FIGURE INSET - SCALE 1" = 750' AMW-36S SHALLOW MONITORING WELL OR PIEZOMETER LOCATION MULTIPLE SHALLOW MONITORING WELL LOCATION MULTIPLE SHALLOW / INTERMEDIATE MONITORING WELL LOCATION SHALLOW / INTERMEDIATE MONITORING WELL LOCATION SHALLOW / DEEP MONITORING WELL LOCATION SHALLOW / MULTIPLE DEEP MONITORING WELL LOCATION SHALLOW / INTERMEDIATE / DEEP MONITORING WELL LOCATION INTERMEDIATE MONITORING WELL LOCATION MULTIPLE INTERMEDIATE MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION SHALLOW EXTRACTION WELL LOCATION SHALLOW / INTERMEDIATE EXTRACTION WELL LOCATION INTERMEDIATE EXTRACTION WELL LOCATION OFF-SITE DOMESTIC WELL LOCATION ABANDONED MONITORING WELL LOCATION ABANDONED OFF-SITE DOMESTIC WELL LOCATION CONTOUR LINE SHOWING TVOC CONCENTRATIONS (mg/L) THIRD QUARTER 2024 TVOC CONCENTRATION (mg/L) DATA NOT USED IN CONTOURING DUPLICATE SAMPLE RESULT NOT SAMPLED AMW-28 AMW-34 AMW-13 AMW-12 MW-3B MW-1B AMW-22S AMW-23M LEGEND: AMW-25 100 (140.0) * [ ] (NS) 0 GRAPHIC SCALE 3,000'1,500' NOTES: 1.AERIAL PHOTOGRAPH FROM GOOGLE EARTH PRO - SEPTEMBER 2024. 2.NS = NOT SAMPLED. THESE WELLS WERE NOT YET INCLUDED IN THE MONITORING PROGRAM FOR THE RELEVANT QUARTER. WELLS AMW-60S/M WERE INSTALLED IN SECOND QUARTER 2024. WELLS AMW-61S/M, AMW-54R, AND AMW-62, 63, AND 64 WERE INSTALLED IN THIRD QUARTER 2024. THESE WELLS WERE ADDED TO THE PROGRAM IN FOURTH QUARTER 2024. CDCR-EW-1 THROUGH CDCR-EW-5 AND PZ-1 THROUGH PZ-3 WERE ADDED TO THE MONITORING PROGRAM BEGINNING IN SECOND QUARTER 2025. 3.ACTIVE EXTRACTION WELLS (EW-1, EW-2, EW-3R, EW-4, AND EW-5), NOT INCLUDED IN TVOC ANALYSIS 4.WELLS 7833-MW-01 THROUGH 7833-MW-04 EXCLUDED FROM CONTOURS AS THEY ARE CONSIDERED PART OF A SEPARATE PLUME. ABBREVIATIONS AND ACRONYMS: 1.TVOC = TOTAL VOLATILE ORGANIC COMPOUNDS 2.sq. ft = SQUARE FEET 3.mg/L = MICROGRAM PER LITER 4.< = LESS THAN AMW-3 EW-2 8106-A DW-9690 EW-3R CDCR-EW-1