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Home My WebLink AboutCDP 2017-0021; OCEAN STREET RESIDENCE; FINAL SOILS REPORT; 2021-01-29EAST COUNTY son, CONSULTATION AND ENGINEERING, INC Mr. Alan Shafran 1673 Amante Court Carlsbad, California 92011 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 TEL. 619-258-7901 January 29, 2021 Project No. 17-l 106D5 Subject: Final As-Graded Soil Report for Proposed Single-Family Residence 2680 Ocean Street Carlsbad, California 92008 References: See Attached Dear Mr. Shafran: In accordance with your request, we have prepared this final, as-graded soil report for the proposed single-family residence at the subject site. Based on our field observations and Report of Field Density Tests (see attached Reference 2), it is our opinion that the soil engineering and engineering geologic aspects of the site grading are in accordance with the referenced geotechnical investigation (Reference 4), local grading ordinances and the project grading plans. In addition, the footing excavations, soil expansion characteristics and soil bearing capacity are all 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, Martin R. Owen, PE, GE Geotechnical Engineer Attachment: References Final As-Graded Soil Report for Proposed Single-Family Residence 2680 Ocean Street Carlsbad, California 92008 REFERENCES Page 2 January 29, 2021 Project No. 17-1106D5 1. "Foundation Excavation Observation, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. l 7-l 106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated February 28, 2019. 2. "Report of Field Density Tests, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. 17-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated December 7, 2018. 3. "Foundation Plan and Details Review, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. l 7-l 106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 2, 2018. 4. "Addendum to Limited Geotechnical Investigation, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. l 7-l 106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated July 8, 2018 . 5. "Limited Geotechnical Investigation, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. 17-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated March 2, 2017. EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Mr. Alan Shafran 1673 Amante Court Carlsbad, California 92011 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 (619) 258-7901 Fax 258-7902 Subject: Report of Field Density Tests Proposed Single-Family Residence 2680 Ocean Street City of Carlsbad, California 92008 References: See Attached Dear Mr. Shafran: December 7, 2018 Project No. 17-1106D5 This report presents the results of field density tests performed on the building pad for the proposed single-family residence at the subject site. Following your request, in-place field density tests were performed in accordance with ASTM D1556 (Sand Cone Method). Grading was conducted between November 28 and December 4, 2018 under the observation and testing of a representitive of East County Soil Consultation & 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 densities and optimum moisture contents of the fill soils are set forth on Page L-1 under "Laboratory Test Results". The approximate test locations are shown on Plate No. 1. Following clearing and grubbing, i.e. the removal of vegetation, concrete waste and debris from the demolition of the existing residence, subgrade soils were overexcavated to a depth of approximately 3 feet below existing grade. The bottom of the excavation was scarified and compacted. On-site and imported fill soils consisting of silty sand were placed in thin lifts and compacted in excess of 90 percent relative compaction while maintaining a moisture content around optimum. Compaction was achieved with the use of a Caterpillar 973 trackloader. ALAN SHAFRAN/ 2680 OCEAN STREET PROJECT NO. 17-1106D5 Based on our field observations and density test results, it is our opinion that the grading operation for the proposed single-family residence was performed in accordance with the referenced geotechnical report (Reference No. 3) and local grading ordinances. If we can be of further assistance, please do not hesitate to contact our office. Page T-1 , L-1 and Plate No. 1 are parts ofthis report. Respectfully Submitted, amadou Saliou Diallo, P .E. RCE 54071 , GE 2704 MSD/md 2 DEPTH TEST SOIL OFFILL NO. TYPE IN FEET 1 1.5 2 1.5 3 1.5 4 1.5 5 2 3 FG 6 2 3 FG 7 3 3 FG ALAN SHAFRAN/ 2680 OCEAN STREET PROJECT NO. 17-l 106D5 PAGE T-1 TABLE OF TEST RESULTS ASTMD1556 MAXIMUM FIELD DRY DRY MOISTURE DENSITY DENSITY %DRYWT. P.C.F. P.C.F 9.8 124.7 128.0 11.2 120.5 128.0 9.0 125.1 128.0 11.2 123.2 128.0 9.1 126.1 134.0 8.5 124.0 134.0 11.4 115.0 126.5 FG = FINISH GRADE 3 PERCENT COMPACTION 97 94 98 96 94 93 91 REMARKS ALAN SHAFRAN/ 2680 OCEAN STREET PROJECT NO.17-1106D5 PAGEL-1 LABO RA TORY TEST RESULTS RESULTS OF MAXIMUM DENSITY AND OPTIMUM MOISTURE The maximum dry densities and optimum moisture contents of the fill materials as determined by ASTM Dl557, Procedures A and B which use 25 blows of a IO-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 I 0-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 DESCRIPTION 1/A DARK BROWN SILTY SAND 2/A DARK BROWN SILTY SAND (IMPORT) 3/A TAN BROWN SILTY SAND (IMPORT) 4 MAXIMUM DRY DENSITY LB/ CU. FT. 128.0 134.0 126.5 OPTIMUM MOISTURE CONTENT %DRY WT. 9.5 8.7 10.5 EAST COUNTY SOIL CONSULTATION & ENGINEERING, INC. 10925 HARTI.EY RD .. SUITE I. SANTEE. CA 92071 (619) 258-7901 Fa:.. (619) 258-7902 l>c-c 7 u;& M . /7-1/~,t:xG' ALAN SHAFRAN/ 2680 OCEAN STREET PROJECT NO.17-1106D5 REFERENCES 1. "Foundation Plan and Details Review, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. 17-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 2, 2018. 2. "Addendum to Limited Geotechnical Investigation, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. 17-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated July 8, 2018. 3. "Limited Geotechnical Investigation, Proposed Single-Family Residence, 2680 Ocean Street, City of Carlsbad, California 92008", Project No. 17-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated March 2, 2017. 5