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Home My WebLink AboutPD 2021-0021; 3460 ROOSEVELT STREET; FINAL SOILS REPORT; 2024-11-08EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 619 258-7901 3460 Roosevelt. LLC c/o Craig Correll 4245 Sunnyhill Drive Carlsbad, California 92008 Subject: References: Dear Mr. Correll: Final As-Graded Soils Report for Proposed Two-Story Single-Family Residence and ADU 3460 Roosevelt Street Carlsbad, California 92008 See Attached November 8, 2024 Project No. 20-l 106E6 In accordance with your request, we have prepared this final, as-graded soils report for the proposed single-family residence and ADU located at 3460 Roosevelt Street, in the City of Carlsbad, California. Based on our field observations and attached Report of Field Density Tests ( Reference No. 4), it is our opinion that the soil engineering and engineering geologic aspects of the site grading are in accordance with the referenced geotechnical report (Reference No. 5), 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. Mamadou Saliou.Diallo, P.E. RCE 54071, GE 2704 Final As-Graded Soils Report for Proposed Two-Story Single-Family Residence and ADU 3460 Roosevelt Street Carlsbad, California 92008 REFERENCES Page 2 November 8, 2024 Project No. 20-1106E6 1. "Review of Red-Line As-Built Grading Plan for Cut-Off Walls in Driveway Area, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-l 106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated October 11 , 2024. 2. "Review of As-Built Grading Plan for Proposed Penneable Pavers, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-1106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated May 31 , 2024 and June 3, 2024. 3. "Observation of Footing Excavations for Proposed Two-Story, Single-Family Residence, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-1106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated. March 10, 2023. 4. "Report of Field Density Tests for Proposed Two-Story, Single-Family Residence, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-l 106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated October 10, 2022. 5. "Geotechnical Investigation for Proposed Two-Story, Single-Family Residence, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-l 106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated October I 0, 2020. 2 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 TEL. 619-258-7901 3460 Roosevelt, LLC October 10, 2022 Project No. 20-1106E6 c/o Craig Correll 4245 Sunnyhill Drive Carlsbad, California 92008 Subject: Report of Field Density Tests for Proposed Two-Story Single-Family Residence and ADU 3460 Roosevelt Street Carlsbad, California 92008 References: 1. "Response to Third-Party Geotechnical Review for Proposed Two-Story Single- Family Residence, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-1106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated July 2, 2020. 2. "Geotechnical Investigation for Proposed Two-Story, Single-Family Residence, 3460 Roosevelt Street, Carlsbad, California 92008", Project No. 20-1106E6, Prepared by East County Soil Consultation and Engineering, Inc., Dated October 10, 2020. Dear Mr. Correll: This report presents the results of field density tests performed during the overexcavation and recompaction of the building pads for the new, two-story residence and ADU at the subject site. Grading was conducted between September 26 and October 3, 2022 under the observation and testing of a representative of East County Soil Consultation & Engineering Inc. The surface soils within the building area for the proposed single-family residence and ADU and to a distance of at least 5 feet outside building limits were removed and replaced with compacted fill to a depth of 12 to 18 inches. Fill soils consisting of on-site and imported silty sand were placed in 6 to 8-inch-thick lifts, moisture-conditioned near the optimum moisture content and compacted in excess of 90 percent relative compaction. Compaction was achieved with the aid of a track loader and a sheepsfoot roller. Report of Field Density Tests for Proposed Two-Story, S~le-Family Residence and ADU 34"0 Roosevelt Street Carlsbad, California 92008 Page2 October 10, 2022 Project No. 20-1106E6 In-place field density tests were performed on the compacted fill in accordance with ASTM Dli556 (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 a laboratory maximum density test of the fill soils are presented on Table 2, Laboratory Maximum Density Test Results. The approximate field density/fill compaction test locations are shown on Figure 1. Based on our field observations and fill compaction test results, it is our opinion that the grading and fill compaction were performed in accordance with the referenced geotecbnical report and local grading ordinances. 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, Mama ou 10u 1 o, . . RCE 54071, GE 2704 Atqichments: Tables 1, 2 and Figure 1 EAST COUNTY son., CONSULTATION AND ENGINEERING, INC. Report of Field Density Tests for Proposed Two-Story, Single-Family Residence and ADU 3460 Roosevelt Street Carlsbad, California 92008 TABLE 1 FILL COMP ACTION TEST RESULTS TEST SOIL FILL FIELD FIELD MAXIMUM NO. TYPE DEPTH MOISTURE DRY DRY (FEET) CONTENT DENSITY DENSITY (%) (PCF) (PCF) 1 1 FG 7.3 117.2 129.0 2 1 FG 7.5 118.0 129.0 3 1 FG 6.8 121.0 129.0 4 1 FG 6.7 119.9 129.0 FG = FINISHED GRADE TABLE2 Page3 October 10, 2022 Project No. 20-1106E6 FILL COMPACTION (%) 91 92 94 93 LABORATORY MAXIMUM DENSITY TEST RESULTS ASTM D1557 SOIL SOIL MAXIMUM OPTIMUM TYP DESCRIPTION DRY DENSITY MOISTURE E (PCF) CONTENT (%) 1 DARK BROWN, SILTY SAND 129.0 9.0 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Report of Field Density Tests for Proposed Two-Story, Single-Family Residence and ADU 3460 Roosevelt Street Carlsbad, California 92008 FIGURE 1 Page4 October 10, 2022 Project No. 20-1106E6 LOCATIONS OF FIELD DENSITY/FILL COMPACTION TESTS ,1 , t:i l i'/:1 I'/ :,;; l .._ ; EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. & I ,, ~~ ,, ~: :':'>-'" l,l l'ta . ,,,, - . .,_..., Jl-,.D'!- 1·• ~ l:.ij l / I :jl ·r,..$.1 # 19-i-h ~ ~ -,· /' .ll, F-,ltl 'i . I ~•i 1/.' I I I ' I