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Home My WebLink AboutX2019-4155 - Soils (3)consultants CITY OF NEWPORT BEACH Building Department 100 Civic Center Drive Newport Beach, CA 92660 XZd l q - 4 5 engineering geotechnical applications July 17, 2020 Project No. SB200.2 Subject: COMPACTION REPORT FOR PLACEMENT OF FILL WITHIN LIMITS OF RESIDENTIAL BUILDING PAD AT 315 E. BAY AVENUE NEWPORT BEACH, CALIFORNIA City of Newport Beach Building Permit No.: X2019-4155 References: 1. "Geotechnical Investigation for Proposed Residential Development Located at 315 E. Bay Avenue, Newport Beach, California," by EGA Consultants, Inc., dated July 22, 2019. 2. "Precise Grading Plan for 315 E. Bay Avenue, Newport Beach, CA 92661," by JT Consulting Engineers, dated December 18, 2019. - 3. "Foundation Plan, New 3 Story 4 Bedroom Residence, 315 E Bay St, Newport Beach, CA 92661," by Paul Rohrer, Structural Engineers, dated June 1, 2019. 4. 'Response to City Comments dated 2/20/2020 for Proposed Residential Development Located at 315 E. Bay Avenue, Newport Beach, California," by EGA Consultants, Inc., dated March 23, 2020. To City Building/Grading Officials: In accordance with the City of Newport Beach building requirements, we are submitting this compaction report for the grading of the subject building pad. This report includes the test results performed at the subject lot during the placement of on-site soil material in the area of the proposed residential building pad. The site earthworks operations were performed by the sub -contractor, Tight Quarters, Inc. Excavation and grading of the subject lot commenced on June 15, 2020 and was complete by June 26, 2020. To date, site grading included the removal of the upper 3 feet of the old fill and native material located within the limits of the proposed building pad. The lot was roughly divided into halves, excavated and recompacted, to bring the entire lot to finished subgrade. One Kubota SVL90-2 skid steer was utilized for the purpose of compaction and grading control. On site soils were moisture treated via a 2 -inch diameter water hose during the grading process to bring the moisture content to near -optimum. For cohesion -treatment, 2 (two) pallets Portland Cement were blended into the newly -placed fill. Each pallet contains 35 bags dry mix, each weighing 94 pounds and approximately 1.33 cubic yards. Prior to the placement of fill, the excavation bottoms were inspected and approved by a Certified Engineering Geologist employed by EGA Consultants. The exposed surface was scarified, moisture conditioned and recompacted to a minimum of 90% relative compaction. Field density test results are tabulated on Table 1, Summary of Field Density Tests. All earthwork operations were performed under continuous observations by this firm and were performed in accordance with geotechnical specifications outlined in the soils report dated July 22, 2019. 375-C Monte Vista Avenue • Costa Mesa, CA 92627 • (949) 642-9309 • FAX (949) 642-1290 The building pad was graded in accordance with the 2016 CBC and the City of Newport Beach Building standards and are approved for construction. Based on our continuous observations and testing, the subject and adjacent sites are not impacted by the site grading operations to date. This report includes the test results performed at the subject site during the placement of on- site soil material in the area of the proposed building pad. Additional observations and testing are required in areas to receive exterior improvements (driveway approach, patio flatwork, etc.) capillary break, and utility trench backfill. I certify that all rough grading work was done in compliance with the above -referenced Soils Report and the work complies with City of Newport Beach grading regulations. All soils values and geotechnical specifications outlined in the above -referenced soils report remain valid. This opportunity to be of service is appreciated. If you have any questions, please call. Very truly yours, EGA Consultants, Inc. DAVID A. WORTHINGTON CEG 2124 Principal Engineering Geologist cc: (1) Addressee (1) Sepulveda Builders; Attn: Brent Sepulveda PAD CERTIFICATION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. SB200.2 July 17, 2020 TABLE 1 SUMMARY OF MOISTURE DENSITY RELATIONSHIPS (ASTM: D1556) Sample Depth Dry Moisture Maximum Optimum Relative Number/ Below Density Content Density Moisture Compaction Location Grade (PCF) N (PCF) N N ft FD -1 3.0 97.3 12.4 107.5 10.5 91 SW Edge Bldg. Pad FD -2 2.0 98.8 11.5 107.5 10.5 92 SW Central Bldg. Pad FD -3 1.5 99.7 11.4 107.5 10.5 93 W. Corner Bldg. Pad FD -4 3.0 95.6 12.2 107.5 10.5 92 Central Bldg Pad FD -5 2.0 99.6 11.6 107.5 10.5 93 NW Edge Bldg, Pad FD -6 1.0 100.5 11.7 107.5 10.5 94 N Edge Bldg. Pad FD -7 0.5 100.8 11.4 107.5 10.5 94 N Central Bldg Pad FD -8 FG 103.0 11.3 107.5 10.5 96 NW Central Bldg, Pad FD -9 FG 101.6 11.7 107.5 10.5 95 Central Bldg. Pad FD -10 FG 101.8 11.5 107.5 10.5 95 SW Central Bld . Pad FD -11 FG 103.1 11.6 107.5 10.5 96 Garage Pad "FD" = Field Density Test "FG" = Finish Grade (Ground Level Pad) PAD CERTIFICATION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. S13200.2 July 17, 2020 TABLE 2 SUMMARY OF MAXIMUM DENSITY TEST (ASTM D 1557) Sample Maximum Optimum Location Density Moisture LJ (%I Fill/Native - Beach Sands 107.5 10.5 Per Soils Report dated July 22, 2019 PAD CERTIFICATION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. SB200.2 July 17, 2020 CITY OF NEWPORT BEACH COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 926588915 www.newportbeachca.00v 1 (949) 644-3200 SETBACKS AND TOP OF SLAB/FLOOR ELEVATION CERTIFICATE The purpose of this certificate is to insure that the structure is located properly on site per the approved drawings. This certificate also verifies the top of slab/floor elevation noted on the approved drawings. After the top of slab/floor elevation is verified to snatch the elevation specified on the approved drawings, the contractor and inspector can measure the height of the structure to the top of slab/floor to verify that it is equal or less than the dimension shown on building sections and elevations. This form must be filled out by a registered surveyor or civil engineer authorized to perform surveys. The survey must be done after the concrete forms are in place or preferable after the concrete slab is poured or raised floor is built, butpriorto starting wall framing. Engineer/Surveyor's Name RO k% M MD 04k License # LS Y 65-3 Engineer/Surveyor's Address Z30/& CAW Fo (2 E'5T- DR. 109 Job Address 31) E'• G*Y Setbacks: Sketch a site plan and specify surveyed setbacks (use back page). * Top of slab/floor elevation: 9•6r * If slab/floor elevation varies, sketch a plan or section through slab on the back page and specify the elevations. Use same datum used in the survey of record. I certify that the setbacks are W, are not ❑, per City approved plans. Describe any deviations from plans: I certify that top of slab/floor elevation(s) is W , is not ❑, per City approved drawings. DesEttle; any deviations from �t „i ,. ..,.. ,g•;• 7- l( ZO, P/% � .. aim , Date Engineer Surveyor's stamp and signature + rrZ(,• Fours/SetbacksandTopotSlabElevationCert. BhY A'4( -.-y 3 r/ to engineering geotechnical applicatioua cons ifItants March 15, 2022 Project No. SB200.2 CITY OF NEWPORT BEACH Building Department 100 Civic Center Drive Newport Beach, CA 92660 Attention: Jason Rudenick, Building Inspector II Subject: FINAL GRADING CERTIFICATE HARDSCAPE COMPACTION, UTILITY TRENCH BACKFILL AT NEW RESIDENTIAL PROPERTY LOCATED at 315 E. BAY AVENUE NEWPORT BEACH, CALIFORNIA City of Newport Beach Grading/Building Permit #: X2019-4155 Associated Documents: 1. 'Geotechnical Investigation for Proposed Residential Development Located at 315 E. Bay Avenue, Newport Beach, California;' by EGA Consultants, Inc., dated July 22, 2019. 2. "Precise Grading Plan for 315 E. Bay Avenue, Newport Beach, CA 92661;' by JT Consulting Engineers, dated December 18, 2019. 3. "Foundation Plan, New 3 Story 4 Bedroom Residence, 315 E Bay St, Newport Beach, CA 92661," by Paul Rohrer, Structural Engineers, dated June 1, 2019. 4. 'Response to City Comments dated 2/20/2020 for Proposed Residential Development Located at 315 E. Bay Avenue, Newport Beach, California," by EGA Consultants, Inc., dated March 23, 2020. 5. "Compaction Report for Placement of Fill Within Limits of Residential Building Pad at 315 E. Bay Avenue, Newport Beach, California," by EGA Consultants, Inc., dated July 17, 2020. To City Building/Grading Officials In accordance with the City of Newport Beach building and grading requirements, we are submitting this final compaction report for the grading of the subject building pad, utility trench backfill, and exterior improvements. The site earthworks operations were performed by the sub- contractor, Tight Quarters, Inc. Excavation and grading of the subject lot commenced on June 15, 2020 and was complete by June 26, 2020. All flatwork subgrade was completed by February 28, 2022. Site grading included the removal of the upper 3 feet of the old fill and native material located within the limits of the building pad. Prior to the placement of fill, the excavation bottoms were inspected and approved by a Certified Engineering Geologist employed by EGA Consultants. The exposed surface was scarified, moisture conditioned and recompacted to a minimum of 90% relative compaction. One Kubota SVL90-2 track loader, a jumping jack Wacker, and vibratory plates were utilized for the purpose of compaction and grading control. On site soils were moisture treated via a 2 -inch diameter water hose during the grading process to bring the moisture content to near -optimum. For cohesion -treatment, 2 (two) pallets Portland Cement were blended into the newly -placed fill. Each pallet contains 40 bags dry mix, each weighing 94 pounds and approximately 1.33 cubic yards. 373-C Monte Vista Avenue • Costa bfesa, CA 92627 • (949) 642-9309 • FAX (949) 642-1290 All earthwork operations were performed under continuous observations by this firm and were performed in accordance with geotechnical specifications outlined in the soils report dated July 22, 2019. I certify that all grading and compaction work was done in compliance with the soils report for this project and the work complies with City of Newport Beach grading regulations. All soils values and geotechnical specifications outlined in the soils report remain valid. Based on our continuous observations and testing, the subject and adjacent sites are not impacted by the site grading operations to date. This opportunity to be of service is appreciated. If you have any questions, please call. Very truly yours, EGA Consultants, Inc (O.Worthington PG `�"" 4 ' �• David A. DAVID A. WORTHINGTON CEG 2124 Na. GEG2124 Principal Engineering Geologist/President nEN8INEEBING r a1 X73,° cc: (1)Addressee (1) Brent Sepulveda, Sepulveda Builders FINAL COMPACTION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. SB200.2 March 15, 2022 TABLE 1 SUMMARY OF MOISTURE DENSITY RELATIONSHIPS (ASTM: D1556) Sample Depth Dry Moisture Maximum Optimum Relative Number/ Below Density Content Density Moisture Compaction Location Grade (PCF) M (PCF) N M ft FD -1 3.0 97.3 12.4 107.5 10.5 91 SW Edge Bldg. Pad FD -2 2.0 98.8 11.5 107.5 10.5 92 SW Central Bldg. Pad FD -3 1.5 99.7 11.4 107.5 10.5 93 W. Corner Bldg. Pad FD -4 3.0 98.6 12.2 107.5 10.5 92 Central Bldg Pad FD -5 2.0 99.6 11.6 107.5 10.5 93 NW Edge Bld . Pad FD -6 1.0 100.5 11.7 107.5 10.5 94 N Edge Bldg. Pad FD -7 0.5 100.8 11.4 107.5 10.5 94 N Central Bldg Pad FD -8 FG 103.0 11.3 107.5 10.5 96 NW Central Pad -Bldg. FD -9 FG 101.6 11.7 107.5 10.5 95 Central Bldg. Pad FD -10 FG 101.8 11.5 107.5 10.5 95 SW Central Bld .Pad FD -11 FG 103.1 11.6 107.5 10.5 96 Garage Pad FD -12 FG 99.7 11.2 107.5 10.5 93 Utility Trench Backfill FINAL COMPACTION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. SB200.2 March 15, 2022 FD -13 Trench Backfill FG 101.4 11.4 107.5 10.5 95 FD -14 FG 100.7 11.3 107.5 10.5 94 Flatwork FD -15 FG 103.8 11.5 107.5 10.5 97 Drive Approach "FD" = Field Density Test "FG" = Finish Grade (Ground Level Pad) TABLE 2 SUMMARY OF MAXIMUM DENSITY TEST (ASTM D 1557) Sample Maximum Optimum Location Density Moisture Pc M. Fill/Native - Beach Sands 107.5 10.5 (Per Soils Report dated July 22, 2019) FINAL COMPACTION REPORT: 315 E. Bay Avenue, Newport Beach, CA Project No. SB200.2 March 15, 2022