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Home My WebLink AboutCDP 02-24; ST CLAIRE RESIDENCE; FINAL SOILS REPORT; 2024-07-24~ VINJE & MIDDLETON ENGINEERING, INC. Ref: Job #21-259-F July 24, 2024 Mr. James Chambers Construction Design Management P.O. Box 1571 Solana Beach, California 92075 costacasas@gmail.com FINAL SOILS REPORT, ST. CLAIRE RESIDENCE 2450 Auto PJrk War Escondido, California 92029-1229 Phone (760) 743-1214 Fax (760) 739-0343 Permit Number: GR2021-0032 Drawing Number: DWG# 412-2B 4588 ADAMS STREET, CARLSBAD, CALIFORNIA (APN 206-192-38) Pursuant to your authorization, and in accordance with the requirements set forth by the City of Carlsbad, this report for the above referenced site confirms that all earthwork was completed in compliance with the approved grading plan and subsequent revised plans as well as the geotechnical report requirements. Grading operations were addressed in the following reports issued by this office. 1. Wall Backfill and Upper House Pad Certification, St. Claire Residence, 4588Adams Street, Carlsbad, California, dated November 15, 2022 2. Interim Compaction Report for Single Family Residence Located at 4588 Adams Street, Carlsbad, California, dated June 14, 2022 3. Final Perimeter Wall Backfill and Driveway Certification, St. Claire Residence, 4588 Adams Street, Carlsbad. California, dated May 30,2024 In our opinion site grading was performed in compliance with the recommendations of our referenced report as well as the City of Carlsbad Grading Ordinance and are suitable for their intended use. The referenced reports are included as Attachments 1, 2 and 3. The conclusions contained herein have been based upon our observations and testing as noted. No representations are made as to the quality or extent of materials not observed and tested. Final Soils Report, St. Claire Residence 4588 Adams Street, Carlsbad, California (APN 206-192-38) July 24, 2024 Page 2 If you have any questions or need clarification, please do not hesitate to contact this office. Reference to our Job #21-259-F will help to expedite our response to your inquiries. We appreciate this opportunity to be of service to you. VINJE & MIDDLETON ENGINEERING, INC. Attachments VINJI: & Mmrn I.TON ENGINl,IIRING, INC. • 2450 Amo Park Way• Escondido, California 92029-1229 • Phone (760) 743-1214 ATTACHMENTS ru\ VINJE & MIDDLETON ENGINEERING, !Ne. Ref: Job #21-259-F November 15, 2022 Mr. Jim Chambers P.O. Box 1571 Solana Beach, CA 92075 Costacasas@gmail.com 2450 Auto PJrk War fucond1do, California 92029-1229 Phone (760) 743-1214 rax (760) 739-0343 PERMIT NUMBER : GR2021-0032 DRAWING NUMBER: DWG#412-2B WALL BACKFILL AND UPPER HOUSE PAD CERTIFICATION, ST. CLAIRE RESIDENCE, 4588 ADAMS STREET, CARLSBAD, CALIFORNIA (APN 206-792-38-00) Pursuant to your authorization, and in accordance with the requirements for the City of Carlsbad, this compaction report for the recent wall backfill has been prepared for the above referenced site. We have completed engineering observation and testing services for site building retaining wall backfill. The upper building pad area is now complete. This report summarizes the results of our tests and observations of the compacted fill which was placed periodically from August 26 through October 27, 2022. Actual dates are shown on the attached compaction test result sheet. The remainder of grading will consist primarily of exterior wall backfill operations. Laboratory compaction testing was performed to determine the maximum dry density and optimum moisture of each soil type in accordance with ASTM D-1557, and previous laboratory tests were brought forward from our Update Compaction Report dated October 18, 2021. Fill was placed in 6 to 8-inch lifts and compacted by repeated passes of whackers. Field density tests were performed in accordance with ASTM D-6938 nuclear gauge as the fill was placed. The moisture content for each density sample was also determined. The approximate locations and results of the field density tests are shown on the attached compaction test result sheet. In our opinion wall backfill was performed in compliance with the recommendations of our referenced report and the city of Carlsbad grading ordinance. Test locations were selected to provide the best possible coverage. The test locations are plotted on the included Plate1A which was derived from the approved grading plan provided by la Costa Engineering. Field density test results are summarized on the compaction test result table. Elevations and locations of field density tests were determined by hand level and pacing/tape measure relative to the top of retaining wall. The results of our field density tests and laboratory testing indicate that the soils within the upper pad areas were compacted to at least 90% of the corresponding maximum dry density at the tested locations. Mr. Jim Chambers November 15, 2022 Page2 Our description of the backfill operations, as well as observations and testing services herein, have been limited to those backfill operations conducted from August 26 through October 27, 2022 . In our opinion the compacted fill within the limits of current grading is suitable for the support of the intended structure. The conclusions contained herein have been based upon our observations and testing as noted. No representations are made as to the quality or extent of materials not observed and tested. If you have any questions or need clarification, please do not hesitate to contact this office. Reference to our Job# 21-259-F will help to expedite our response to your inquiries. We appreciate this opportunity to be of service to you. VINJE & MIDDLETPN ENGINE , Y!NJr. & MmDLliTl1N ENGINECRING, INC • 2450 Auto PMk Way• Escondido, California 92029-1229 • Phone (760) 743-1214 JOB NO: 21-259-F NAME: Jim Chambers LOCATION: 4588 Adams Street, Carlsbad, CA. TEST RESULTS: Maximum Dry Density/Optimum Moisture Content, ASTM 1557: Soil Type :_4_ Brown silty clayey fine to medium sand Maximum Dry Density: 133.5 pcf Optimum Moisture:ll_ % Soil Type :~ Brown silty medjum to fine sand Maximum Dry Density:Jl1Q pcf Optimum Moisture: 10.5 % Soil Type :J_ Dark olive brown medium to fine sand with some clay Maximum Dry Density: 134.6 pcf Optimum Moisture:M % Soil Type : t 0 Orange tan fine silty sand Maximum Dry Density: t 25.0 pcf Optimum Moisture: t 0.0 % JOB NO: 21-259-F NAME: James Chambers LOCATION: 4588 Adams Street, Carlsbad Field Density Tests Results: Date Test Location 2022 No. 8/26 I North Wall 8/29 2 North Wall 8/30 3 North Wall 8/31 4 North Wall 8/31 5 North Wall 9/1 6 North Wall 9/2 7 North Wall 9/6 8 North Wall 9/7 9 North Wall 9/8 10 North Wall 9/12 II North Wall 9/13 12 North Wall 9/14 13 North Wall 9/21 14 West Wall 10/25 15 East Wall 10/26 16 East Wall 10/27 17 East Wall 18 19 Approx. Test Elev. lft) 63.5 64 64.5 66 63.5 66.5 61.5 68 69 69 70 71 11.5 66 69 70 70.5 % Field Dry Max Dry % Field Density Relative Comments Moisture Density Pd Pd Como. 9 127.3 133.5 95 8 125.2 133.5 94 9 131.6 133.5 99 8 130.2 133.5 98 8 124.8 133.5 93 133.5 94 13 118.9 133.5 93 8 127.7 134.6 95 I I 128.9 134.6 96 13 122.0 127.0 96 12 122.3 127.0 96 9 123.1 133.5 93 Finish Grade 8 120.6 133.5 90 Finish Grade 9 123.2 133.5 92 7 121.6 125.0 97 8 120.9 125.0 97 9 118.6 125.0 95 Finish Grade ~ VINJE & MIDDLETON ENGINEERING, I NC. Ref Job# 21-259-F June 14, 2022 Mr. Jim Chambers P.O. Box 1571 Solana Beach, CA 92075 Costacasas@gmail.com 2450 Auto Park War Escond,do, Cal1forn1a 92029-1229 Phone (760) 743-1214 fax (760) 739-0343 PERMIT NUMBER : GR2021-0032 DRAWING NUMBER: DWG#412-2B INTERIM COMPACTION REPORT FOR SINGLE FAMILY RESIDENCE LOCATED AT 4588 ADAMS STREET CARLSBAD CA. Pursuant to your authorization, and in accordance with the requirements for the City of Carlsbad , this compaction report for the recent recommended remedial grading has been prepared for the above referenced site. We have completed engineering observation and testing services in conjunction with the removal and re-compact grading operations which consisted of a 2-foot removal and re-compact of the existing soils within the garage and portion of the upper building pad areas. This report summarizes the results of our tests and observations of the compacted fill which was placed periodically from October 19, 2021 through November 2, 2021 . Actual dates are shown on the attached compaction test result sheet. The remainder of grading will consist primarily of wall backfill operations. A laboratory compaction test was performed to determine the maximum dry density and optimum moisture in accordance with ASTM D-1557 and previous laboratory tests were brought forward from our Update Compaction Report dated October 18, 2021. Fill was placed in 6 to 8-inch lifts and compacted by means of heavy construction equipment. Field density tests were performed in accordance with ASTM D-6938 nuclear gauge as the fill was placed. The moisture content for each density sample was also determined. The approximate locations of the field density tests are shown on the attached compaction test result sheet. In our opinion the remedial grading was performed in compliance with the recommendations of our referenced report. The locations of the tests were placed to provide the best possible coverage. Areas of low compaction, as indicated by the field density tests, were brought to the attention of the contractor. These areas were reworked by the contractor and retested. The test locations are plotted on the included Plate1 which was derived from the approved grading plan provided by La Costa Engineering. Field density test results are summarized on the compaction test result table. Elevations and locations of field density tests were determined by hand level and pacing/tape measure relative to field staking done by others. Mr. Jim Chambers June 14, 2022 Page2 The results of our field density tests and laboratory testing indicate that the soils within the garage and upper pad areas were compacted to at least 90% of the corresponding maximum dry density at the tested locations. Our description of the backfill operations, as well as observations and testing services herein, have been limited to those backfill operations conducted from October 19 through November 2, 2021. In our opinion the compacted fill within the limits of current grading is suitable for the support of the intended structure. The conclusions contained herein have been based upon our observations and testing as noted. No representations are made as to the quality or extent of materials not observed and tested. If you have any questions or need clarification, please do not hesitate to contact this office. Reference to our Job# 21-259-F will help to expedite our response to your inquiries. We appreciate this opportunity to be of service to you. VINJE & MIDDLETON Ralph M. Vinje GE#863 V1NJI. & MIDDLlil ON ENGINf'I RING, INC:. • 2450 Auto Park War• Escondido, California 92029-1229 • Phone (760) 743-1214 JOB NO: 21-259-F NAME: Jim Chambers LOCATION:4588 Adams Street, Carlsbad Field Density Tests Results: Date Test Location 2021 No. 10/19 I Upper Building Pad 10/19 2 Upper Building Pad 10/19 3 Upper Building Pad 10/20 4 Upper Building Pad 10/29 5 Garage Pad 10/29 6 Garage Pad 11/1 7 Garage Pad 11/1 8 Garage Pad 11/1 9 Garage Pad 11/1 10 Garage Pad 11/2 II Garage Pad 11/2 12 Garage Pad Approx. Test Elev. (ft) 69.5 70.5 71.3 71.5 59.5 61 59.5 59.5 60.5 60.5 60.5 61.5 % Field Dry Max Dry o/o Field Density Relative Comments Moisture Density Pcf Pcf Como. 12 116.9 128.2 91.2 10 118.6 131.4 90.3 11 115.1 131.4 88 FG, Tesl Failed IO 121.5 131.4 93 FG, Retest # 3 7 127.4 133.5 95 8 121.7 1:n.5 91 8 123.1 133.5 92 IO 121.0 133.5 91 8 120.4 133.5 91 10 119.0 133.5 89 Test Failed 7 125.6 133.5 94 Rc1cs1 # 10 8 126.5 133.5 95 F.G. Maximum Dry Density/Optimum Moisture Content, ASTM 1557: Soil Type: 4 Brown silty clayey fine to medium sand Maximum Dry Density: 133.5 pct Optimum Moisture: 9.5% Soil Type: 5 Dark Brown clayey sand Maximum Dry Density: 128.2 pcf Optimum Moisture: 10.9% Soil Type: 3 Brown silty sand tr. Clay Maximum Dry Density : 131.4 pct Optimum Moisture : 10.3 % ~ VINJE & MIDDLETON ENGINEERING, INC. 2450 Au10 Park w~>· Escondido, California 92029-1229 Phone (7 60) 7 43-1214 Fax (760) 739-0343 Ref: Job# 21-259-F May 30, 2024 PERMIT NUMBER: GR2021-0032 DRAWING NUMBER: DWG# 412-2B Mr. James Chambers Construction Design Management P.O. Box 1571 Solana Beach, California 92075 costacasas@gmail.com Final Perimeter Wall Backfill And Driveway Certification St Claire Residence, 4588 Adams Street, Carlsbad, California (APN 206-792-38) Pursuant to your authorization, and in accordance with the requirements set forth by the City of Carlsbad, this compaction report for the recent wall backfill and the upper portion of the driveway has been prepared for the above referenced site. We have completed engineering observation and testing services for site perimeter retaining walls backfill. This report summarizes the results of our tests and observations of the compacted fill which was placed periodically from December 8, 2022 through December 26, 2023. Actual dates are shown on the attached compaction test result sheet. Previous grading operations and house pad wall backfill were addressed in reports issued by this office. "Wall Backfill And Upper House Pad Certification, St Claire Residence, 4588 Adams Street, Carlsbad California", dated November 15, 2022 "Interim Compaction Report For Single Family Residence Located At 4588 Adams Street, Carlsbad, California", dated June 14, 2022 Laboratory compaction testing was performed to determine the maximum dry density and optimum moisture of each soil type in accordance with ASTM D-1557, and previous laboratory tests were brought forward from our Update Compaction Report dated October 18,2021. Fill was placed in 6 to 8-inch lifts and compacted by repeated passes of whackers. Field density tests were performed in accordance with ASTM D-6938 nuclear gauge during scheduled site visits . The moisture content for each density sample was also determined. The approximate locations and results of the field density tests are shown on the attached compaction test result sheet. In our opinion wall backfill and driveway fill was performed in compliance with the recommendations of our referenced report as well as the City of Carlsbad grading ordinance and are suitable for their intended use. Final Perimeter Wall Backfill And Driveway Certification St Claire Residence, 4588 Adams Street, Carlsbad (APN 206-792-38) May 30, 2024 Page2 Test locations were selected to provide the best possible coverage. The test locations are plotted on the included grading limits and compaction test location map, Plate1 . which was derived from the approved grading plan provided by La Costa Engineering. Field density test results are summarized on the compaction test result table. Depth and locations of field density tests were determined by hand level and pacing/tape measure relative to the top of retaining wall or information provided by the contractor. The results of our field density tests and laboratory testing indicate that the soils within the referenced areas were compacted to at least 90% of the corresponding maximum dry density at the tested locations. Perimeter walls where no tests are shown were backfilled with gravel and approved by city inspector. Our description of the backfill operations, as well as observations and testing services herein, have been limited to those backfill operations conducted from December 8, 2022 through December 26, 2023. In our opinion compacted fill within the delineated limits of current grading is suitable for intended use. Previous recommendations and limitations set forth in our "Update Compaction Report Graded Pad, 4488 Adams Street, Carlsbad, California", dated March 29, 2019 are valid and applicable. The property owner(s) should be made aware that altering drainage patterns, landscaping, the addition of patios, planters, and other improvements, as well as over irrigation and variations in seasonal rainfall, all effect subsurface moisture conditions, which in turn affect structural performance The conclusions contained herein have been based upon our observations and testing as noted. No representations are made as to the quality or extent of materials not observed and tested. If you have any questions or need clarification, please do not hesitate to contact this office. Reference to our Job# 21-259-F will help to expedite our response to your inquiries. We appreciate this opportunity to be of service to you. VINJE & MIDDLETON ENGINEERIN , INC. Attachments V1NJE & Mnmr l·l oN ENGINJ.UUNG, INC • 2450 Auto Park War• Escondido, California 92029-1229 • Phone (760) 743-1214 ,,V1 \,, I I -------,,, I I I I I ------. -I ------... I I I I ' \ GRADING LIMITS AND COMPACTION TEST LOCATION MAP , / ,,,., ; ."·~~ / .·:,.:1 "/ ____ ...--------® / / .,,,,,.. VICINITY MAP LEGEND @ APPROXIMATE LOCATION FIELD DENSITY TEST 0 APPROXIMATE LIMITS OF COMPACTED FILL / PLATE 1 Vlnje & Middleton Engineering Job # 21-259-F \ JOB NO: 21-259-F NAME: Mr. James Chambers Construction Design Management LOCATION: 4588 Adams Street, Carlsbad Field Density Tests Results: Test Approx. % Field Dry Max Dry % Date No. Location Test Field Density Density Relative Comments Ht. (ft) Moisture Pcf Pcf Comp. 12/08/22 1 East Retaining Wall Extension OX -6' BelowTW 9 113.9 133.5 85 Test Failed 12/08/22 2 East Retaining Wall Extension OX -6' BelowTW 9 121.2 133.5 91 Retest #1 12/08/22 3 East Retaining Wall Extension OX -6' BelowTW 11 118.7 133.5 91 12/09/22 4 East Retaining Wall Extension OX -5' BelowTW 8 120.7 133.5 90 12/09/22 5 East Retaining Wall Extension OX -4' BelowTW 8 124.6 133.5 93 FG 09/05/23 6 East Wall Backfill -2½' of 3' Below TW 10 127.6 133.5 96 09/06/23 7 East Wall Backfill -2' of 3' Below TW 9 126.0 133.5 94 09/08/23 8 West Wall -1' of 5½' BelowTW 10 129.5 133.5 96 FG 09/08/23 9 West Wall -1' of 5½' Below TW 11 123.1 133.5 92 FG 09/08/23 10 East Wall -.5' of 3' Below TW 11 123.0 134.6 91 FG 12/21/23 11 Upper Driveway Subgrade 5 120.6 131.4 92 Subgrade 12/26/23 12 Lower Driveway Subgrade 6 126.6 134.6 94 Subgrade -1- JOB NO: 21-259-F NAME: Mr. James Chambers Construction Design Management LOCATION: 4588 Adams Street, Carlsbad TEST RESULTS: Maximum Dry Density/Optimum Moisture Content, ASTM 1557: Soil Type: 3 Brown silty sand with trace clay Maximum Ory Density: 131.4 pcf Optimum Moisture: 10.3% Soil Type: 4 Brown silty clayey fine to medium sand Maximum Ory Density: 133.5 pcf Optimum Moisture: 9.5% Soil Type: 8 Dark olive brown medium to fine sand with some clay -site mix Maximum Ory Density: 134.6 pct Optimum Moisture: 8.8%