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Home My WebLink AboutMS 14-11; MATHIS RESIDENCE SFR PARCEL 3; FINAL SOILS REPORT; 2023-08-28' I ! l Dennis & Robin Mathis 3128 Levante Street Carlsbad, California 92009 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 619 258-7901 August 28, 2023 Project No. 02-114712 Subject: Final As,-Graded Soils Report for Proposed Single-Family Residence 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 Grading Plan No. 14-11 -Project ID: GR2019-0034-DWG 498-lB References: See Attached Dear Mr. & Mrs. Mathis: In accordance with your request, we have prepared this final, as-graded soil report for the proposed single-family residence located at 3144 Levante Street, in the City of Carlsbad, California Based on our field observations and attached Reports of Field Density Tests (References 1, 2 and 8), it is our opinion that the-soil engineering and engineering geologic aspects of the site grading are in accordance with the referenced geotechnical reports (References 3 and 9), local grading ordinances and the project grading plans. In addition, the footing excavations, soil expansion characteristics and soil bearing capacity are in conformance with the approved plans and specifications. This opportunity to be of service is appreciated. If you have any questions, or we can be of further service, please do not hesitate to call or contact us. Respectfully Submitted, M~adou Saliou Dial.lo, P .E. RCE 54071, GE 2704 MSD\md Report of Field Density Tests during Backfill of Sewer and Water Line Laterals 3144 Levante Street, APN 223-170-65 Page2 February 23, 2023 Project No. 02-1147J2 Carlsbad, California 92009 TEST NO. 1 2 3 4 5 6 7 TABLE 1 FILL COMPACTION TEST RESULTS SOIL FILL FIELD FIELD MAXIMUM FILL LOCATION TYPE DEPTH MOISTURE (FEET) CONTENT (%) 1 2 10.8 1 4 11.9 1 SG 12.2 1 1.5 9.5 1 SG 10.9 2 AB 10.3 2 AB 9.5 SG = FINISHED SUBGRADE AB = AGGREGATE BASE DRY DRY COMPACTION DENSITY DENSITY (%) (PCF) (PCF) 121.8 127.5 95 123.0 127.5 96 123.6 127.5 97 125.7 127.5 98 127.7 127.5 100 117.4 123.0 95 117.6 123.0 96 TABLE2 LABO RA TORY MAXIMUM DENSITY TEST RESULTS ASTM D1557 SOIL SOIL MAXIMUM OPTIMUM TYP DESCRIPTION DRY DENSITY MOISTURE E (PCF) CONTENT (%) 1 GRAYISH BROWN, SILTY SAND 127.5 10.0 (IMPORT) 2 RECYCLED AGGREGATE BASE 123.0 11.5 (IMPORT) EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Sewer " " " " Water II II Sewer Water EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Dennis & Robin Mathis 3128 Levante Street Street Carlsbad, California 92009 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 TEL. 619-258-7901 February 10, 2021 Project No. 02-114712 Subject: Report of Fill Compaction Tests for Proposed Single-Family Residence 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 Project ID: GR2019-0034 -DWG 498.lB References: See attached Figure 1 Dear Mr. and Mrs. Mathis: This report presents the results of fill compaction tests performed on the building pad for the proposed single-family residence at the subject site. Site grading observation and testing was performed by a representative of East County Soil Consultation & Engineering Inc. The surface soils within the building areas and to a distance of at least 5 feet outside building limits were removed and replaced with compacted fill to a depth of 3 feet. Fill soils consisting of on-site, silty and clayey sand were placed in 6 to 8-inch thick lifts, moisture- conditioned to near optimum moisture content and compacted to a minimum of 90 percent relative compaction. Compaction was achieved with the aid of a vibratory sheepsfoot roller. In-place field density tests were performed on the compacted fill in accordance with ASTM Dl556 (Sand Cone Method). The results of the field density tests and fill compaction values are presented on the attached Table 1, Fill Compaction Test Results. Results of laboratory maximum density tests of the fill soils are presented on Table 2, Laboratory Maximum Density Test Results. The approximate fill compaction test locations are shown on Figure 2. Based on our field observations and field density test results, it is our opinion that the grading and fill compaction were performed in accordance with the referenced, updated geotechnical report (Reference No. 1) and local grading ordinances. Report of Fill Compaction Tests for Pro1Josed Single-Family Residence 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 Page2 February 10, 2021 Project No. 02-1147J2 This opportunity to be of service is appreciated. If you have any questions, or we can be of further service, please do not hesitate to call or contact us. Respectfully Submitted, Martin R Owen, PE, GE Geotechnical Engineer Attachments: Tables 1, 2, Figures 1 and 2 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Report of Fill Compaction Tests for Proposed Single-Family Residence 3144 Levante Street, APN 223-170-65 PageJ February 10, 2021 Project No. 02-1147J2 Carlsbad, California 92009 TABLE 1 FILL COMPACTION TEST RESULTS TEST SOIL FILL FIELD FIELD MAXIMUM FILL REMARKS NO. TYPE DEPTH MOISTURE DRY DRY COMPACTION (FEET) CONTENT DENSITY DENSITY (%) (%) (PCF) (PCF) 1 1 1 10.4 113.1 120.5 94 2 I I 11.8 113.0 120.5 94 3 1 1.5 12.8 111.2 120.5 92 4 1 1.5 10.8 ll0.7 120.5 92 5 2 1.5 12.7 107.2 118.0 91 6 1 1.5 13.5 109.2 120.5 92 7 1 FG 12.8 116.3 120.5 96 8 2 FG 9.0 110.l 118.0 93 9 2 FG 10.1 108.7 118.0 92 10 1 FG 12.1 114.8 120.5 95 11 2 FG 13.7 109.7 118.0 93 12 1 1.5 13.6 115.1 120.5 95 13 1 FG 14.9 112.0 120.5 93 14 1 1.5 12.7 116.3 120.5 96 15 1 FG 14.8 114.5 120.5 95 FG = FINISHED GRADE SOIL TYPE l 2 TABLE2 LABORATORY MAXIMUM DENSITY TEST RESULTS ASTMD1557 SOIL MAXIMUM OPTIMUM MOISTURE DESCRIPTION DRY DENSITY CONTENT <PCF) (%) TAN BROWN, SIL TY SAND WITH A 120.5 11.3 TRACE OF CLAY TAN, SILTY SAND 118.0 11.4 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Report of Fill Compaction Tests for Proposed Single-Family Residence 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 FIGURE2 Pages February 10, 2021 Project No. 02-1147J2 LOCATION OF FIELD DENSITY TESTS LEGEND e APPROXIMATE LOCATION OF FIELD DENSITY TEST EAST COUNTY son, CONSULTATION AND ENGINEERING, INC. Report of Fill Compaction Tests for Proposed Single-Family Residence 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 FIGURE 1 REFERENCES Page4 February 10, 2021 Project No. 02-1147J2 1. "Updated Geotechnical Report for Proposed Single-Family Residence, 3144 Levante Street, APN 223-170-65, Carlsbad, California", Project No. 02-114712, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 25, 2020. 2. "Grading Plans for Mathis Residence, 3144 Levante Street, Carlsbad CA 92009", Prepared by La Costa Engineering, Inc. 3. "Geotechnical Report Update (Revised), Proposed Single-Family Residence on Southwestern Parcel, Levante Street, APN 223-170-18 & 19, La Costa Area, City of Carlsbad, California", Project No. 02-114712, Prepared by East County Soil Consultation and Engineering, Inc., Dated September 19, 2016. 4. "Addendum to Limited Site Investigation. Four Proposed Single-Family Residences, Lot 230 & 231 Levante Street, APN 223-170-18 & 19, City of Carlsbad, California", Project No. 02- 114712, Prepared by East County Soil Consultation and Engineering, Inc., Dated November 12, 2002. 5. "Report of Field Density Tests, Four Proposed Single-Family Residences, Lot 230 & 231 Levante Street, APN 223-170-18 & 19, City of Carlsbad, California", Project No. 02-114712, Prepared by East County Soil Consultation and Engineering, Inc., Dated September 12, 2002. 6. "Limited Site Investigation, Four Proposed Single-Family Residences, Lot 230 & 231 Levante Street, APN 223-170-18 & 19, City of Carlsbad, California", Project No. 02-114 7 J2, Prepared by East County Soil Consultation and Engineering, Inc., Dated July 25, 2002. EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE I SANTEE, CALIFORNIA 92071 (619) 258-7901 Fax 258-7902 Dennis Mathis Construction 3351 Venado Street Rancho La Costa, California 92009 September 12, 2002 Project No. 02-1147J2(A) Subject: Report of Field Density of Tests Four Proposed Single Family Residences Lots 230 & 231 Levante Street, APN 223-170-18 & 19 City of Carlsbad, California Reference:"Limited Site Investigation, Four Proposed Single Family Residences, Lot 230 & 231 Levante Street, APN 223-170-18 & 19, City of Carlsbad, California", Project No. 02-1147J2, Prepared by East County Soil Consultation and Engineering, Inc., Dated July 25, 2002 Dear Mr. Mathis: This report presents the results of field density tests performed on the building pads for the four proposed single family residences at the subject site. In accordance with your request, in-place field density tests were taken in conformance with ASTM D1556-90 (Sand Cone). Site grading was performed between July 26 and August 20, 2002 under the observation and testing of a representative of East County Soil Consul tat ion and Engineering, Inc. The results of the field density tests are presented on Page T-1 under "Table of Test Results". The laboratory determinations of the maximum dry density and optimum moisture content results are set forth on Page L-1 under "Laboratory Test Results". The approximate test locations are shown on Plate No. 1. DENNIS MATHIS CONSTRUCTION PROJECT NO 02-l 147J2(A) Prior to the remedial grading operation, brush and vegetation were removed from the subject site. Subgrade soils were overexcavated to a minimum depth of 3 feet below proposed grade into competent bearing soils. These soils were scarified to a depth of approximately 6 inches, moisture conditioned and recompacted. On-site soils consisting of silty sand and clayey sand were placed and compacted in excess of 90 percent relative density while maintaining a moisture content around optimum. Compaction was achieved with the use of Caterpillar 983B and 977L trackloaders. Based on our field observations and density test results, it is our opinion that the grading operation for the proposed single family residences was performed in accordance with the referenced soil investigation report and local grading ordinances. If we can be of further assistance, please do not hesitate to contact our office. Pages T-1, L-1 and Plate No. 1 are attached. Respectfully Submitted, Mamadou Saliou RCE 54071 MSD/md 2 DENNIS MATHIS CONSTRUCTION PROJECT NO. 02-l 147J2(A) PAGEL-I LADORA TORY TEST RESULTS RESULTS OF MAXIMUM DENSITY TEST The maximum dry densities and optimum moisture contents of the fill materials as determined by ASTM D1557-91, Procedure A which uses 25 blows of a 10 pound slide hammer falling from a height of 18 inches on each of 5 equal layers in a 4 inch diameter 1/30 cubic foot compaction cylinder and Procedure C which uses 56 blows of a 10 pound slide hammer falling from a height of 18 inches on each of 5 equal layers in a 6 inch diameter 1/13.3 cubic foot compaction cylinder are presented as follows: SOIL TYPE/ PROCEDURE 1/A TAN SILTY FINE GRAINED SAND 2/A TAN BROWN SILTY FINE GRAINED SAND 3/ AT AN BROWN CLAYEY SAND 4 MAXIMUM DRY DENSITY LB/CU. FT. 119.0 118.0 120.5 OPTIMUM MOISTURE CONTENT ¾DRYWT. 11.7 11.4 11.3 .. EAST COUNTY SOIL CONSULTATION & ENGINEERING, INC. 10925 HARTLEY RD .. SUITE I, SANTEE. CA 92071 (619) 2511-7901 Pu (619) 2511-7902 Dennis & Robin Mathis 3128 Levante Street Carlsbad, California 92009 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 TEL. 619-258-7901 February 23, 2023 Project No. 02-1147!2 Subject: Report of Field Density Test.<1 during Backfill of Sewer and Water Line Laterals 3144 Levante Street, APN 223-170-65 Carlsbad, California 92009 Project ID: GR2019-0034-DWG 498.lB Dear Mr. & Mrs. Mathis: This report presents the results of field density tests performed during the backfill of the sewer and water line laterals within the right-of-way of Levante Street for the proposed single-family residence at the subject site. Backfill soils consisting of imported silty sand and aggregate base were moisture-conditioned around the optimum moisture content and compacted in excess of the required 95 percent relative compaction. Compaction was achieved with the aid of hand whackers. In-place field density tests were performed on the compacted fill in accordance with ASTM D1556 (Sand Cone Method). The results of the field density tests, and fill compaction values are presented on Table 1, Fill Compaction Test Results. Results of laboratory maximwn density tests of the backfill soils are presented on Table 2, Laboratory Maximum Density Test Results. This opportunity to be of service is appreciated. If you have any questions, or we can be of further service, please do not hesitate to call or contact us. Respectfull Submitted, (( fl\ Mamadou Saliou Diallo, P .E. RCE 54071, GE 2704 Attachments: Tables 1 and 2 Report of Field Density Tests during Backfill of Sewer and Water Line Laterals 3144 Levante Street, APN 223-170-65 Page2 February 23, 2023 Project No. 02-1147J2 Carlsbad, California 92009 TEST NO. 1 2 3 4 5 6 7 8 9 TABLE 1 FILL COMPACTION TEST RESULTS SOIL FILL FIELD FIELD MAXIMUM FILL LOCATION TYPE DEPTH MOISTURE (FEET) CONTENT (%) 1 2 10.8 I 4 11.9 I SG 12.2 I 1.5 9.5 I SG 10.9 2 AB 10.3 2 AB 9.5 2 AB 9.6 2 AB 9.2 SG = FINISHED SUBGRADE AB = AGGREGATE BASE DRY DRY COMPACTION DENSITY DENSITY (%) (PCF) (PCF) 121.8 127.5 95 123.0 127.5 96 123.6 127.5 97 125.7 127.5 98 127.7 127.5 100 117.4 123.0 95 117.6 123.0 96 118.7 123.0 96 117.8 123.0 96 TABLE2 LABO RA TORY MAXIMUM DENSITY TEST RESULTS ASTMD1557 SOIL SOIL MAXIMUM OPTIMUM TYPE DESCRIPTION DRY DENSITY MOISTURE (PCF) CONTENT (%) 1 GRAYISH BROWN, SILTY SAND 127.5 10.0 (IMPORT) 2 RECYCLED AGGREGATE BASE (IMPORT) 123.0 11.5 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Sewer " " " " Water " " Sewer Water Sidewalk " " Repo,t of Field Density Test, du,ing Backfill of Sewe, and Wate, Line Late,ats 3 I 44 Lev ante Street, APN 223-I 70-65 Carlsbad, California 92009 \.' '-2:1 F"IU Sl.OPe -1~ u, ~ w Ct.'. .... ~ z UI 0 .. ._ .. 4. / 4! 1 I I l . ,l I ,; l I I I I I l ~ I .. ' I <:o I<' 'Ii EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Page3 February 23, 2023 Project No. 02-1147J2 / ti" i I I ; I ' r" • J