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Home My WebLink AboutCDP 13-10; GARFIELD BEACH RESIDENCE; FINAL SOILS REPORT; 2020-01-24Final As-Graded Soils Report for Multi-Family Residence 2637-2643 Garfield Street Carlsbad, California 92008 REFERENCES Page 2 June 24, 2020 Project No. 09-1106D5 1. "Report of Additional Field Density Tests, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-l 106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated April 12, 2016. 2. "Foundation Excavation -Observation, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated March 25, 2016. 3. "Report of Field Density Tests, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated January 29, 2016. 4. "Geotechnical Report Update, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 15, 2013. 5. "Limited Geotechnical Investigation, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated January 22, 2009 . 2 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 (619) 258-7901 Fax 258-7902 B. Mills & Co., LLC 2717 Via Festivo Carlsbad, California 92008 Subject: Report of Field Density Tests Proposed Multi-Family Residence 2637-2643 Garfield Street, APN 203-141-18 City of Carlsbad, California 92008 January 29, 2016 Project No. 09-1106D5 References: 1. "Geotechnical Report Update, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 15, 2013. 2. "Limited Geotechnical Investigation, Proposed Multi-Family Residence, 2637- 2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated January 22, 2009. Ladies & Gentlemen: This is to present the results of field density tests performed on the building pad for the proposed multi-family residence at the subject site. In accordance with your request, in-place field density tests were performed in accordance with ASTM D1556 (Sand Cone Method). Grading was conducted between January 21 and 22, 2016 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 density and optimum moisture content 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 structure, subgrade soils were overexcavated to a minimum depth of approximately 3 feet below existing grade. The bottom of the excavation was scarified to a depth of approximately 6 inches, moisture conditioned and compacted. TEST SOIL NO. TYPE 1 2 3 4 5 6 1 B. Mills & Co., LLC.I 2637-2643 Garfield Street/ Carlsbad Project No. 09-l 106D5 DEPTH OF FILL IN FEET 1.5 3 1.5 5 FG 3 FG 4 FG PAGE T-1 TABLE OF TEST RESULTS ASTMD1556 MAXIMUM FIELD DRY DRY MOISTURE DENSITY DENSITY ¾DRY WT. P.C.F. P.C.F 9.5 124.2 125.0 10.9 120.3 125.0 9.2 121.3 125.0 7.6 1 I 8.9 125.0 8.0 122.2 125.0 9.7 122.4 125.0 FG = FINISH GRADE 3 PERCENT COMPACTION 99 96 97 95 98 98 REMARKS B. Mills & Co., LLC./ 2637-2643 Garfield Street/ Carlsbad Project No. 09-1106D5 PAGE L-1 LABORATORY 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 D 1557, Procedures A and B which use 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 DESCRIPTION 1/A DARK BROWN SILTY SAND 4 MAXIMUM DRY DENSITY LB/CU. FT. 125.0 OPTIMUM MOISTURE CONTENT %DRY WT. 9.2 TEST SOIL NO. TYPE 1 1 2 1 B. Mills & Co., LLC./ 2637-2643 Garfield Street/ Carlsbad Project No. 09-J 106D5 DEPTH OFFILL IN FEET FG FG PAGE T-1 TABLE OF TEST RESULTS ASTMD1556 MAXIMUM FIELD DRY DRY MOISTURE DENSITY DENSITY ¾DRYWT. P.C.F. P.C.F 7.8 124.0 125.0 6.5 118.7 125.0 FG = FINISH GRADE 2 PERCENT COMPACTION 96 95 REMARKS B. Mills & Co., LLC./ 2637-2643 Garfield Street/ Carlsbad Project No. 09-/ !06D5 PAGE L-1 LABORATORY 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 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 DESCRIPTION 1/A DARK BROWN SILTY SAND 3 MAXIMUM DRY DENSITY LB/CU. FT. 125.0 OPTIMUM MOISTURE CONTENT %DRY WT. 9.2 B. Mills & Co., LLC.I 2637-2643 Garfield Street/ Carlsbad Project No. 09-1106D5 REFERENCES 1. "Foundation Excavation Observation, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1 106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated March 25, 2016. 2. "Report of Field Density Tests, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated January 29, 2016. 3. "Geotechnical Report Update, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 15, 2013. 4. "Limited Geotechnical Investigation, Proposed Multi-Family Residence, 2637-2643 Garfield Street, APN 203-141-18, City of Carlsbad, California 92008", Project No. 09-1106D5, Prepared by East County Soil Consultation and Engineering, Inc., Dated January 22, 2009. 4