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Home My WebLink AboutCDP 2018-0040; BAUM RESIDENCE; FINAL SOILS REPORT; 2021-05-12Mr. David Raum 261 Apple Blossom Lane Vista, California 92084 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 TEL. 619-258-7901 May 12, 2021 Project No. ll-1127C5 Subject: Final As-Graded Soil Report for Proposed Single-Family Residence 1587 Triton Street Carlsbad, California 92009 Dear Mr. Raum: 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 attached Figure 1, References and Reports of Field Density Tests (References 2 and 7), it is our opinion that the soil engineering and engineering geologic aspects of the site grading are in accordance with our Preliminary Geotechnical Investigation Report (Reference 11 ), local grading ordinances and the project grading plans. In addition, footing excavations, soil expansion characteristics and soil bearing capacity were observed to be 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: Figure 1, References and Reports of Field Density Tests Final As-Graded Soil Report for Proposed Single-Family Residence 1587 Triton Street Carlsbad, California 92009 FIGURE 1 Page 2 May 12, 2021 Project No. 11-1127C5 REFERENCES AND REPORTS OF FIELD DENSITY TESTS 1. "Foundation Excavation Observation, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. 1 l-1127C5, Prepared by East County Soil Consultation and Engineering, Inc ., Dated October 24, 2019. 2. "Report of Field Density Tests, Proposed Single-Fanuly Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. l l-l 127C5, Prepared by East County Soil Consultation and Engineering, Inc ., Dated August 15, 2019. 3. "Response to Tlurd Party Second Review, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. ll-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated May 22, 2019. 4. "Grading Plan, Foundation Plan and Details Review, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. ll-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated May 22, 2019. 5. "Soils Report Update, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. ll-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated October 19, 2018. 6. "Soils Report Update, Proposed Single-Family Residence, 6575 Black Rail Road (Lot No. 2), Carlsbad, California 92009", Project No. 11-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated September 27, 2012. 7. "Report of Field Density Tests, Proposed Single-Family Residence, 6575 Black Rail Road (Lot No . 2), Carlsbad, California 92009", Project No. ll-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 23, 2011. 8. "Transfer of Geotechnical Responsibility, Geotechnical Engineer of Record, Two Proposed Single- Family Residences, 6575 Black Rail Road, City of Carlsbad, California", Prepared by East County Soil Consultation and Engineering, Inc., Dated July 11 , 2011 . 9. "Geotechnical Update, Parcel 1 of Parcel Map 19411, APN 215-070-39, Carlsbad, San Diego County, California," W .O. 6087-A-SC, Prepared by Geosoils Inc. Dated June 16, 2010. 10. "Final Compaction Report of Grading, Building Pad Area, Parcel 4, 6575 Black Rail Road, Carlsbad, San Diego County, California," W .O. 34601-B-SC, Prepared by Geosoils Inc. Dated September 14, 2004 . 11 . "Prelinunary Geotechnical Investigation, 6575 Black Rail Road, Proposed Subdivision, Carlsbad, San Diego County, California", W.O. 3460-A-SC, Prepared by GeoSoils Inc., Dated November 27, 2002. EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. Mr. David Raum EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE "I." SANTEE, CALIFORNIA 92071 , (619) 258-7901 Fax 258-7902 261 Apple Blossum Lane Vista, California 92084 Subject: References: Dear Mr. Raum: Report of Field Density Tests Proposed Single-Family Residence 1587 Triton Street Carlsbad, California 92009 See Attached August 15, 2019 Project No. 1 l-l 127C5 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 Dl556 (Sand Cone Method). Grading was conducted on August 13 and 14, 2019 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. On-site fill soils consisting of silty sand were scarified to a depth of approximately 6 inches, moisture- conditioned and compacted in excess of 90 percent relative compaction. Compaction was achieved with the use of backhoe. 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 of this report. Mamadou Saliou Di RCE 54071, GE 2704 MSD/md DEPTH TEST SOIL OFFILL NO. TYPE IN FEET FG 2 FG David Raum/ 1587 Triton Street/ Carlsbad Project No. 11-I I 27C5 PAGE T-1 TABLE OF TEST RESULTS ASTMD1556 MAXIMUM FIELD DRY DRY MOISTURE DENSITY DENSITY %DRYWT. P.C.F. P.C.F 6.4 121.3 127.0 7.3 119.7 127.0 FG = FINISH GRADE 2 PERCENT COMPACTION 96 94 REMARKS David Raum/ 1587 Triton Street/ Carlsbad Project No. I 1-1127C5 PAGEL-I 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 01557, 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 REDDISH BROWN SIL TY SAND 3 MAXIMUM DRY DENSITY LB/CU. FT. 127.0 OPTIMUM MOISTURE CONTENT %DRY WT. 10.0 EAST COUNTY SOIL CONSULTATION & ENGINEERING, INC. 10925 HARTLEY RD., SUITE I SANTEE, CA 92071 GEOTECHNICAL ENGINEERING ,/- i ,/ I ; , ! I f ll j I P.4-WC> /?At,fr-f flf~ lf?t3777fl/wN .:;;;;eeer ~U:ii34-b -!V· //-//Z7CL_5 David Raum/ 1587 Triton Street/ Carlsbad Project No. l l-l l 27C5 REFERENCES I. "Response to Third Party Second Review, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. 1 l-l 127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated May 22, 2019. 2. "Grading Plan, Foundation Plan and Details Review, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. 11-1127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated May 22, 2019. 3. "Soils Report Update, Proposed Single-Family Residence, 1587 Triton Street, Carlsbad, California 92009", Project No. l l-l l 27C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated October 19, 2018. 4. "Soils Report Update, Proposed Single-Family Residence, 6575 Black Rail Road (Lot No. 2), Carlsbad, California 92009", Project No. l I-I 127C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated September 27, 2012. 5. "Report of Field Density Tests, Proposed Single-Family Residence, 6575 Black Rail Road (Lot No. 2), Carlsbad, California 92009", Project No. l 1-1 I 27C5, Prepared by East County Soil Consultation and Engineering, Inc., Dated August 23, 2011. 6. "Transfer of Geotechnical Responsibility, Geotechnical Engineer of Record, Two Proposed Single-Family Residences, 6575 Black Rail Road, City of Carlsbad, California", Prepared by East County Soil Consultation and Engineering, Inc., Dated July 11 , 2011. 7. "Geotechnical Update, Parcel 1 of Parcel Map 19411, APN 215-070-39, Carlsbad, San Diego County, California," W.O. 6087-A-SC, Prepared by Geosoils Inc. Dated June 16, 2010. 8. "Final Compaction Report of Grading, Building Pad Area, Parcel 4, 6575 Black Rail Road, Carlsbad, San Diego County, California," W.O. 34601-B-SC, Prepared by Geosoils Inc. Dated September 14, 2004. 9. "Preliminary Geotechnical Investigation, 6575 Black Rail Road, Proposed Subdivision, Carlsbad, San Diego County, California", W.O. 3460-A-SC, Prepared by GeoSoils Inc., Dated November 27, 2002. 4 EAST COUNTY SOIL CONSULTATION AND ENGINEERING, INC. 10925 HARTLEY ROAD, SUITE "I" SANTEE, CALIFORNIA 92071 (619) 258-7901 Fax 258-7902 A & E Construction Services P.O. Box 130400 Carlsbad, California 92013 Project: Report of Field Density Tests Proposed Single-Family Residence 6575 Black Rail Road (Lot No. 2) Carlsbad, California 92009 References: See Attached Ladies & Gentlemen: August 23, 2011 Project No. l 1-1127C5 This is to present the results of field density tests performed on the building pad for the the proposed single-family residence, including the backfill of the keystone retaining wall for the driveway at the subject site. In accordance with your request, in-place field density tests were performed in accordance with ASTM D1556 (Sand Cone Method). Backfill and grading were conducted between July 14 and August 19, 2011 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 and deleterious materials, subgrade soils were overexcavated to a depth of approximately 2 feet below existing grade into dense terrace deposits. The bottom of the excavation was scarified to a depth of approximately 6 inches, moisture conditioned and compacted. On-site fill soils consisting of silty sand were placed in thin lifts, moisture conditioned around optimum and compacted in excess of 90 percent relative compaction. Compaction was achieved with the use of a Caterpillar 941 track loader and a hand whacker. A & E CONSTRUCTION SERVICES/ BLACK RAIL ROAD/ PROJECT NO. I l-1127C5 Based on our field observations and density test results, it is our opinion that the grading operation for the the proposed single-family residence was performed in accordance with the referenced geotechnical reports (References No. 2 and No. 4) 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 parts of this report. Respectfully Submitted, Mamadou Saliou Diallo, P .E. RCE 54071, GE 2704 MSD/md 2 TEST SOIL NO. TYPE 1 1 2 1 3 2 4 3 5 3 6 2 7 2 8 2 9 1 10 1 11 2 12 13 1 14 1 15 1 16 A & E CONSTRUCTION SERVICES/ BLACK RAIL ROAD/ PROJECT NO.11-1127C5 DEPTH OFFILL IN FEET 1 1 3 3 5 6 7FG 2 2 4 5 7 2 8FG 3FG PAGET-1 TABLE OF TEST RESULTS ASTMD1556 MAXIMUM FIELD DRY DRY MOISTURE DENSITY DENSITY ¾DRYWT. P.C.F. P.C.F 11.6 118.0 127.0 12.1 117.8 127.0 10.5 122.5 125.5 8.7 120.4 128.0 8.9 120.7 128.0 9.7 120.2 125.5 13.4 119.5 125.5 11.5 116.9 125.5 9.9 116.2 127.0 11.7 121.6 127.0 12.9 114.4 125.5 11.5 119.6 127.0 11.4 121.7 127.0 12.1 115.7 127.0 11.3 120.3 127.0 10.6 119.5 127.0 FG = FINISH GRADE 3 PERCENT COMPACTION 93 93 98 94 94 96 95 93 92 96 91 94 96 91 95 94 REMARKS A & E CONSTRUCTION SERVICES/ BLACK RAIL ROAD/ PROJECT NO. I l-l 127C5 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 D1557, 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 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: OPTIMUM MAXIMUM MOISTURE SOIL TYPE/ DRY DENSITY CONTENT PROCEDURE DESCRIPTION LB/CU. FT. %DRY WT. 1/A REDDISH BROWN SIL TY SAND 127.0 10.0 2/A TAN BROWN SILTY SAND 125.5 11.0 3/A DARK BROWN SILTY SAND 128.0 9.5 4 ,i, Tklro,v _, ----.. •1 '\ 1 I \ I .1-J \i .4 11 l I I I ·" ~ " .,~ . \~ • \'v \"'J •\\ EAST COUNTY SOIL CONSULTATION & ENGINEERING, INC. I 092S HARTLEY RD .• SUITE I, SANTEE. CA 92071 (619) 258-7901 Fax (619) 258-7902 ~I:!£, ~ M) s~ ~ • \'1 A & E CONSTRUCTION SERVICES/ BLACK RAIL ROAD/ PROJECT NO. I 1-1127C5 REFERENCES 1. "Transfer of Geotechnical Responsibility, Geotechnical Engineer of Record, Two Proposed Single-Family Residences, 6575 Black Rail Road, City of Carlsbad, California", Prepared by East County Soil Consultation and Engineering, Inc., Dated July 11, 2011. 2. "Geotechnical Update, Parcel 1 of Parcel Map 19411, APN 215-070-39, Carlsbad, San Diego County, California," W.O. 6087-A-SC, Prepared by Geosoils Inc. Dated June 16, 2010. 3. "Final Compaction Report of Grading, Building Pad Area, Parcel 4, 6575 Black Rail Road, Carlsbad, San Diego County, California," W.O. 34601-B-SC, Prepared by Geosoils Inc. Dated September 14, 2004. 4. "Preliminary Geotechnical Investigation, 6575 Black Rail Road, Proposed Subdivision, Carlsbad, San Diego County, California", W.O. 3460-A-SC, Prepared by GeoSoils Inc., Dated November 27, 2002. 5