J_2024 05 09_West Orange Stormwater Management Plan

Rock Core Photographs Proposed West Orange Switching Station Lifecycle Project West Orange, Essex County, New Jersey PSE&G Rock Core Box Key: SBH-5 Run 1 – 25’-30’, REC: 100%, RQD: 51% SBH-5 Run 2 – 30’-35’, REC: 92%, RQD: 75% SBH-3 Run 1 – 25’-30’, REC: 100%, RQD: 98% SBH-3 Run 2 – 30’-35’, REC: 28%, RQD: 0% GZA GeoEnvironmental Appendix I File No. 26.0092704.00

Rock Core Photographs Proposed West Orange Switching Station Lifecycle Project West Orange, Essex County, New Jersey PSE&G Rock Piece Sent for Compression Testing Rock Core Box Key: SBH-4 Run 1 – 35’-40’, REC: 92%, RQD: 78% SBH-4 Run 2 – 40’-45’, REC: 100%, RQD: 76% SBH-2 Run 1 – 20’-25’, REC: 85%, RQD: 13% SBH-2 Run 2 – 25’-30’, REC: 100%, RQD: 58% GZA GeoEnvironmental Appendix I File No. 26.0092704.00

APPENDIX III Rock Core Compression Test Results

45H Commerce Way, Totowa, NJ 07512 973.812.1818 terrasenselab.com 07/26/22 TerraSense Project Number: 22009432A Kim Tully Project Manager GZA 117 Canal Road South Bound Brook, NJ 08880 Dear Ms. Tully: Re: Laboratory Test Results for 92704.00 – PSE&G West Orange The purpose of this letter is to present the results of the laboratory tests performed on the samples delivered to the TerraSense laboratory on 07/11/22. Testing was performed based on your assignment also dated 07/11/22. Test Results Test results are reported on the accompanying test pages. Test Comments Testing was performed in general accordance with ASTM or other methods as listed on the test pages. Deviations from the test standards are noted on these pages. Limitations Our professional services for this project have been performed in accordance with generally accepted engineering practices; no other warranty, expressed or implied, is made. Sample Disposition If we do not receive other instructions from you within thirty days, this material will be disposed. If you have any questions concerning the test results reported in this letter, please call us. Sincerely, Drew Mazujian Project Manager Attachment: (4 sheets)

~temPp Vv LABORATORY TEST ASSIGNMENT AND TRACKING SHEET as fay ~ ay A ‘\ fi Ct ent Project Number F2EOU GB Task Number Assigned by: JA; ax tu lly Office Go oR Date Assigned: = / Project Name. PSOE EG test Srance Assignment Number: Due Date: F#/AS/AR Any known or suspected contamination of the material (yes or no)? if yes, HASP required for testing to proceed. SAMPLE IDENTIFICATION INDEX TESTS ENGINEERING PROPERTY TESTS: | @ 2 = #3 2 5 | 8 | 8 3 z a1% | 8212] |eslé ela] |Elz a Se | & g sald ge] 8 ele lela} ess gels gg] € g =] os) si’ gs Bel s 2/ele)/2)s 46 g)2 g/ 5 ¢ { | @ = gig a| & 1 sie . B B a 5 a a] sg) 5] 2 se |e £2/ 5 2/Flzlsolele |e #]/8 812 8 3 | Ss 4 8| 5 5 zeis >|/zs|] < s/<¢]/S]/s|/e]fv)/2 8/4 & a a Bs 5 ef is gir is} 2a)/a8 |) 2lEzls OQ!}s}rl]S3)/8/821% sluz = 3 B sai 2 as os eed 3 £5 |? @|2ZE| € e/S/s;/e]6/s3] 5 €]8 & £ BS ss &8 Flee) 3] 22/2 | 5 |23| § e)e)2/5]/2/23)2 E]2 5) 5 &§ gz Z2 60 |#l{sol=e] 3] GS ia |e lege) oi | folalale! 5 |5sia 2/5 2) 2 2 _ | 2 © © zslsle ales x 2 | g 8 s 3/3/38 s/s 1/8 3 8 | S N & s/8/8 g/ 8 | 8 & = i a a a a a Q a a a a a Hl ve | Mo} w [UW] wa | Gb} Po | Ry | CA SL UCr | Ucm | ine Re NOTES: 1. Exploration Number = designation for boring, test pit, etc. 2. Give range or average depth. 3. See details Key: Test Status Key (shown by symbol or letter key): TEST ASSIGNED TEST IN PROGRESS TEST COMPLETED TEST FINALIZED ‘Guide to lest Specifications and instructions 7 7 — — = = _ - Relinquished by: Date: Received by: Track# Date: Received at lab by: , Date: Ji f4> A Pilifad TerraSense, LLC 45H Commerce Way, Totowa, NJ 07512 Page 1 of 1 L600rock (08/09) (973)-812-1818 12/29/2011

GZA #92704.00 PSE&G West Orange SUMMARY OF ROCK TESTING SAMPLE IDENTIFICATION Boring Run STATE PROPERTIES WATER TOTAL CONTENT UNIT (1) WGT. ENGINEERING PROPERTY TESTS DRY TEST UNIT TYPE WGT. (2) B-1 B-5 Notes: SBH-4 SBH-1 (%) (pcf) (pcf) 1.8 1.8 168 169 165 166 REMARKS UNCONFINED COMPRESSION TESTS (ASTM D7012) COMPRESSIVE AXIAL STRENGTH STRAIN @ ELASTIC FAILURE MODULUS UC UC ESTIMATED (5) (psi) (%) (psi) 14500 17530 0.37 0.45 4E+06 4E+06 (1) Water contents determined after trimming and shearing. (2) Test Type Abbreviations: UC: Unconfined Compression test with estimated elastic moduli determination (5) Modulus estimated based on corrected gross deformations. Prepared by: JS Reviewed by: DM Date: 7/26/2022 45H Commerce Way Totowa, NJ 07512 Project No.: 22009432A File: Rock Summary Page 1 of 1

20000 18000 16000 Compressive Stress, psi 14000 12000 10000 8000 6000 4000 2000 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Axial Strain, % Specimen Information Water Wet Unit Dry Unit Content (%) Weight (pcf) Weight (pcf) 1.77 168 165 Length Diameter (inch) (inch) 4.446 1.967 Specimen meets ASTM D4543 shape tolerances FAILURE Test Summary PHOTO Strain Rate Corrected Strain qu Estimated (shown) (%/min) Strain to Peak (%) (psi) Elastic Modulus (psi) Test by: Test Date: JS Jul-18-22 0.09 0.37 14500 4E+06 Reviewed by: DM GZA Project # 92704.00 TerraSense Project # 22009432A Analysis File: UCrockTL1 (01/22) PSE&G West Orange COMPRESSIVE STRESS VS STRAIN UNCONFINED COMPRESSIVE STRENGTH TEST Boring: B-1 Run: SBH-4 7/26/2022 UCB-1 SBH-4

25000 Compressive Stress, psi 20000 15000 10000 5000 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Axial Strain, % Specimen Information Water Wet Unit Dry Unit Content (%) Weight (pcf) Weight (pcf) 1.79 169 166 Length Diameter (inch) (inch) 4.422 1.965 Specimen meets ASTM D4543 shape tolerances FAILURE Test Summary PHOTO Strain Rate Corrected Strain qu Estimated (shown) (%/min) Strain to Peak (%) (psi) Elastic Modulus (psi) Test by: Test Date: JS Jul-18-22 0.09 0.45 17530 4E+06 Reviewed by: DM GZA Project # 92704.00 TerraSense Project # 22009432A Analysis File: UCrockTL1 (01/22) PSE&G West Orange COMPRESSIVE STRESS VS STRAIN UNCONFINED COMPRESSIVE STRENGTH TEST Boring: B-5 Run: SBH-1 7/26/2022 UCB-5 SBH-1

APPENDIX IV Limitations

APPENDIX IV Limitations A. Subsurface Information Locations: The locations of the explorations were approximately determined by tape and compass measurement from existing site features. Elevations of the explorations were approximately determined by interpolation between contours shown on topographic plans provided to us by the PSE&G. The locations and elevations of the explorations should be considered accurate only to the degree implied by the method used. Interface of Strata: The stratification lines shown on the individual logs of the subsurface explorations represent the approximate boundaries between soil types, and the transitions may be gradual. Field Logs/Final Logs: A field log was prepared for each exploration by a member of our staff. The field log contains factual information and interpretation of the soil conditions between samples. Our recommendations are based on the final logs as shown in this report and the information contained therein, and not on the field logs. The final logs represent our interpretation of the contents of the field logs, and the results of the laboratory observations and/or tests of the field samples. Water Levels: Water level readings have been made in the explorations at times and under conditions stated on the individual logs. These data have been reviewed and interpretations made in the text of this report. However, it must be noted that fluctuations in the level of the groundwater will occur due to variations in rainfall, temperature, and other factors. Pollution/Contamination: Unless specifically indicated to the contrary in this report, the scope of our services was limited only to investigation and evaluation of the geotechnical engineering aspects of the site conditions, and did not include any consideration of potential site pollution or contamination resulting from the presence of chemicals, metals, radioactive elements, etc. This report offers no facts or opinions related to potential pollution/contamination of the site. Environmental Considerations: Unless specifically indicated to the contrary in this report, this report does not address environmental considerations which may affect the site development, e.g., wetlands determinations, flora and fauna, wildlife, etc. The conclusions and recommendations of this report are not intended to supersede any environmental conditions which should be reflected in the