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Stantec N Lead Exceedance Contours Stockton Channel 0 Soil Test Pits(Stantec, 2021) t ® Previous Test Pits(adapted from Wallace Kuhl and Associates,2007) 0 Concentration Exceeds Screening Levels Approximate Project Boundary z� . Test pits with no associated lead data • are labeled in red. r r~- Aq LJ r � r TP-15 • . � Depth Lead(mgfkg( / TP-88 JJlJ& + 2 811.15 354 9 4 7.85 ! - - -41 TP-85 Depth Lead(mgfkg) ® TP"05 2 7-8 TP-07 Depth Lead(mgfkg; •� Depth Lead(mgfkg) TP-85 Depth Lead(mg/kg) �'�� -O$ _ ♦ 2 37 TP-86 _ - ' 2 47.7 2 134 ❑epth Lead(mgfkg} Depth Lead(mgfkg) _ TP-fi9 Depth Lead(mgrkg} 4 104 6 217 2 23 2 10-7 .r 3 100 10 15.8 TP-86 TP-24 TP-02 - -$3 TP-76 Depth Lead(mgrkg) ❑epth Lead(mglkg) Depth Lead(mglkg) TP-79 TP_17 Depth Lead(mgfkg) TP4 ® Lead detected at concentrations exceeding 2 100 2 72.6 TP-32 TP-80 TP-79 2 25 5 41 4 10-3 a 21 Depth Lead(mgfkg) Depth Lead(mgfkg( Tom; '� r screening criteria for unrestricted site use ❑epth Lead(mgr-g. Depen Lead(mgrkg} (80 mg/kg) 56.6-feet 2 31.7 TP02 TP in 2 39 "34 TP_10 2 130 8 161 4 93 T-166 �� l Sample ID TP-89 TP01 ® 5 - Depth Lead(mgfkg; TP-76 ® ® l {4 TP-01 TP-83 Depth Lead[mgfkg} TP-01 � 2 18 2 790 TP-41 �-42 TP4 Tom' urs"" Constituent Depth Lead(mgfkg} TP-28 Tp.B 5 37 Tp_14 Depth Lead(mg kg} 2 219 1 TP-27 h 32.3 Depth Lead(mgfkg} ® To 6 .� Sample Depth Depth Lead m/k TP-24 De th Lead tk Depth Lead m rk Depth Lead tk Depth Lead(mglkg} P ('r'9 9. -_ p ( g g} 2 1 2 100 PL-15 ® 1 (feet) p ( 9 9) - TP-03 a 532 p (mg-gl T.�7 9 M11 _ TP-11 5 85.0 270 Depth L.ad(rrgrkg} - = 2 219 Value(ug/kg) Depen Lead(mgrkg) - TP03 2 330 2 56 TPOo 6 150 2 113 - - 6 7.0 fi TP-29 5.4 -__ Depth Lead(mP-39 grkg} 8 3.59 1.5 49 4 53.2 4 10.6 �� TPD4 TP 3 TPg�" TP- fi 2 192 PL-15 _ ' Shaded cells indicate concentrations TP_28 9 95'0 TP-39 TP14 ® T�67 exceeding screening levels T TP-04 TP-27 TP-30 10 40.9 TP-23 Depth Lead(mglkg) TP05 TP-31 Depth Lead(mglkgl - TI1` Depth Lead(mgfkg) 2 32 2 8.32 TP8 TP-34 TP-35 �_1� 2 150 TP-29 TP-30 TP-31 TP09 TPI TP-36 5 37 Depth ead{mgfkg} T=y 5 16 5 6.5 TP11 TP-37 TP06 Depth Lead(mgfkg) Depth Lead(mg.rkg} Depth Lead{mgfkg) x'35 TP5 2 24 8 TP-38 .7 2 35 2 36 2 27 Depth Lead(mgfkg} 5 24.8 T,20 - _ TP-33 x_36 TP16 TF-41 ® � TP-9 8 9.6 5 114 5 6.6 2 26 TP18 TP12 TP17 TP-42 TP-43 To T1 Depth Lead(mg/kg} 6 13 Depth Lead(mgrkg)z 48 TP-16 TP-26 TP_rj _ TP3 ® TP2 TP-09 3 470 _ TP13 fkg}6 B5 Depth Lead(mgDepth Lead(mgfkg) Tp_43 �3 TP2 •1{1 Depth Lead(mgrkg) TP 40 Depth Lead(mgfkg) S 7.9 TP-06 2 51-3 8 52 Depth Lead(mgfkg) 2 87.4 TP-33 Depth Lead(mgfkg) 3 67 Depth Lead(mgfkg} Tom'} 2 130 Depth Lead(mglkg) • 7 25.8 TP-13 8 7.72 _ 2 68 4 54 Depth Lead(mgfkg} 5 33 2 33.4 2 18 Tom' Depth Lead(mglkg; TP-1g TP19 TP20 6 87 + 4 106 PL-11 5 25 ® 2 91.5 -40 - - - f Depth Lead(mgrkg; Depth Lead(mgfkg} 6 6.97 52 0 PL-11 TP-a1 _ 2 37 PL-6 ❑epth Lead(mgrkg} TP-81 TP-37 11 2 5 56 TP-20 TP-12 ❑e m Lead Depth Lead(mgrkg} M TP77Depth Lead{mgrkg) To�Ts P (mgfkg} TP1 TP21TATO 7 4.4 5 69 Depth Lose Lead(mgrkg;Lead(mgfkg} TP822 5.2 2 31 2 86.9 ® ' z 17.6 TP-67 169 TP1 10 11-5 - 8 32 TP-77 . PL-6 TP-21 Depth Lead[mgfkg} TP-82 _ TP-38 2 90 Depth Lead(mgfkg} Depth Lead7gV�k Depth Lead(mgfkg) Depth Lead(mgfkg} Depth Lead[mgfkg} 4 120 TQ 72 5 4 59.7 z z9 2 34 TP6 TP-49 5 44 PL-9 Depth Lead[mgfkg} TP-48 TP-49 2 19 - - PL--3 ❑epth Lead(mgrkg} fo Depth Le ad[mgfkg) 5 26 ^A e� 3 27 • ��f 2 23 5 22 PL_5 TP-51 ® PL-3 \ TP-48 Depth Lead(mgfkg) ' TP=78 2 150 All • PL5 TP-5o TP_51 �rurr1 - 11 q Depth Lead(mgrkg] 94 ❑epth Lead(mgfkg} TP-78 2 240 ❑epth Lead(mgrkg) ,f TP- 5 14 ��- 2 94 50 - Depth Lead(mgfkg) t- 2 15 ,�- _ R _ a � E fAll �•, �[YI WIN t Notes 1. mg/kg=milligrams per kilogram 2.J=The reported result is an estimated value. e D on 3.Coordinate System: NAD 1983 UTM Zone 1 ON 4.Data Stockton,CA 5.Background:Sources: 1ty f ©2022Microsoft Corporation©2022 Maxar©CNES(2022)Distribution Airbus DS©2022 TomTom - rr� w Project Location .� South Pointe Property 701,705,833,855 West Weber Avenue Stockton,California 95203 ClienbProject 185704833 _ * City of Stockton California �■ ,� �+� EPA Brownfields Assessment Grants Phase II Environmental Site Assessment 0 50 100 a Feet (At original documentsize of 11x17) 1:600 Title Figure No. Disclaimer:This document has been prepared based on information provided by others as cited In the Notes section.Stantec has not verified the accuracy and/or completeness of this information and shall not be responsible for any errors or omissions which may be incorporated herein as a result.Stantec assumes no responsibility for data supplied in electronic format,and the recipient accepts Extent of Lead in Soil full responsibility for venfying the accuracy and completeness of the data. ■ _-1