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HomeMy WebLinkAboutX2018-1026 - Soils (2)x2019-10zs 1806 Poi} SheMeld P1 engineering geotechnical applications consultants CITY OF NEWPORT BEACH July 16, 2018 Building Department Project No. GC091.2 100 Civic Center Drive Newport Beach, CA 92660 Subject: COMPACTION REPORT FOR PLACEMENT OF FILL WITHIN LIMITS OF RESIDENTIAL BUILDING PAD AT 1806 PORT SHEFFIELD PLACE NEWPORT BEACH, CALIFORNIA NEWPORT BEACH, CALIFORNIA City of Newport Beach Plan Check No.: 0829-2018 References: 1. "Geotechnical Investigation for Proposed, Residential Development Located at 1806 Port Sheffield Place, Newport Beach, California," by EGA Consultants dated February 20, 2018. 2. "Foundation Plan, 1806 Port Sheffield Place, Newport Beach, California,' by ESI/FME Engineering, Inc., Iasi dated May 30, 2018. 3. "Site Grading/Drainage Plan, 1806 Port Sheffield Place, Newport Beach, California," by Forkert Engineering, Inc. dated May 20, 2018. 4. 'Response Memorandum: Stormwater Infiltration and Drain Devices at Proposed Single Family Dwelling Located at 1806 Port Sheffield Place, Newport Beach, California," by EGA Consultants, Inc., dated June 20, 2018. 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 July 2, 2018 and was complete by July 5, 2018. The building and garage pad consists of a 3 foot over -excavation, with native spoils used for backfill. Prior to the placement of fill, the excavation bottoms were inspected and approved by a representative of the 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. One Cat 953-C track loader was utilized for the purpose of compaction and grading control. Water was added via a 2 -inch fire hose and moisture contents were at near -optimum moisture levels. All earthwork operations were performed under continuous observations by this firm and were performed in accordance with geotechnical specifications outlined in the referenced soils report dated February 20, 2018. 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 and imported 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, drainage, etc.) 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 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: Greg Clarke, Owner PAD CERTIFICATION REPORT: 1806 Port Sheffield Place, Newport Beach, CA Project No. GC081.2 July 16, 2018 0- Bavid A. Worthington No. CEG2124 CERTIFIED ait TABLE 1 SUMMARY OF MOISTURE DENSITY RELATIONSHIPS (ASTM: D1556) Sample Depth Dry Moisture Maximum Optimum Relative Number/ Below Density Content- Density Moisture Compaction Location Pad ft PCF °/a PCF FD -1 3.0 106.6 12.9 116.0 11.5 92 S Central Pad FD -2 2.0 107.8 12.2 116.0 11.5 93 SWC of Pad FD -3 1.0 108.0 11.9 116.0 11.5 93 SEC of Pad FD -4 0.5 109.5 12.3 116.0 11.5 94 SWC of Pad FD -5 3.0 105.6 13.2 116.0 11.5 91 NWC of Pad FD -6 2.5 109.2 12.4 116.0 11.5 94 N Central Pad FD -7 1.5 106.8 12.1 116.0 11.5 92 NEC of Pad FD -8 0.5 108.3 11.9 116.0 11.5 93 N Central Pad FD -9 FG 108.5 12.4 116.0 11.5 93 NWC of Pad FD -10 FG 109.4 12.5 116.0 11.5 94 SWC of Pad FD -11 FG 110.5 12.0 116.0 11.5 95 NEC of Pad FD -12 FG 111.0 12.1 116.0 11.5 96 Garage Pad "FG" = Finish Grade (Ground Level Pad). PAD CERTIFICATION REPORT: 1806 Pon Sheffield Place, Newport Beach, CA Project No. GC091.2 July 16, 2018 TABLE 2 SUMMARY OF MAXIMUM DENSITY TEST (ASTM D 1557) Sample Maximum _T Optimum LacatC©n Density Moisture P.cf= Fill (per Soils Report dated 2/20/18) 116.0 11.5 PAD CERTIFICATION REPORT: 1806 Port Sheffield Place, Newport Beach, CA Project No. GC091.2 July 16, 2018 engineering geotechnical applications consultants September 18, 2019 Project No. GC091.2 CITY OF NEWPORT BEACH Building Department 100 Civic Center Drive Newport Beach, CA 92660 Subject: FINAL GRADING CERTIFICATE HARDSCAPE COMPACTION, UTILITY TRENCH BACKFILL AT NEW RESIDENTIAL PROPERTY LOCATED at 1806 PORT SHEFFIELD PLACE NEWPORT BEACH, CALIFORNIA City of Newport Beach Permit No.: 0829-2018 References: 1. "Geotechnical Investigation for Proposed, Residential Development Located at 1806 Port Sheffield Place, Newport Beach, California," by EGA Consultants dated February 20, 2018. 2. "Foundation Plan, 1806 Port Sheffield Place, Newport Beach, California," by ESI/FME Engineering, Inc., last dated May 30, 2018. 3. "Site Grading/Drainage Plan, 1806 Port Sheffield Place, Newport Beach, California," by Forkert Engineering, Inc. dated May 20, 2018. 4. 'Response Memorandum: Stormwater Infiltration and Drain Devices at Proposed Single Family Dwelling Located at 1806 Port Sheffield Place, Newport Beach, California," by EGA Consultants, Inc., dated June 20, 2018. 5. "Compaction Report for Placement of Fill within Limits of Residential Building Pad at 1806 Port Sheffield Place, Newport Beach, California," by EGA Consultants, Inc., dated July 16, 2019. 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 July 2, 2018 and was completed on July 5, 2018. All flatwork subgrade was completed by August 30, 2019. Site grading included the removal of the upper 3 of the old fill and native material located within the limits of the new building pad and exterior improvements. A minimum 12 inches of engineered fill was placed below all future footing bottom elevations. 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 and recompacted to a minimum of 90% relative compaction. Field density test results are tabulated on Table 1, Summary of Field Density Tests. One 953C Caterpillar tractor front loader, one jumping -jack wacker, one vibratory plate, and water hoses were utilized for the purposes of compaction and grading control. 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 February 20, 2018. 375-C Monte Vista Avenue • Costa Mesa, CA 92627 • (949) 642-9309 • FAX (949) 642-1290 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. ;F ut' °�— �u� DAVID A. WORTHINGTON CEG 2124 Principal Engineering Geologist - Copies: (2) Addressee (1) Greg Clarke, Owner FINAL COMPACTION REPORT: 1806 Port Sheffield Place, Newport Beach, CA Project No. GC091.2 September 18, 2019 F F CF TABLE 1 SUMMARY OF MOISTURE DENSITY RELATIONSHIPS (ASTM: D1556) Sample Depth Dry Moisture Maximum Optimum Relative Number/ Below Density Content Density Moisture Compaction Location Pad ft PCF % PCF %° FD -1 3.0 106.6 12.9 116.0 11.5 92 S Central Pad FD -2 2.0 107.8 12.2 116.0 11.5 93 SWC of Pad FD -3 1.0 108.0 11.9 116.0 11.5 93 SEC of Pad FD -4 0.5 109.5 12.3 116.0 11.5 94 SWC of Pad FD -5 3.0 105.6 13.2 116.0 11.5 91 NWC of Pad FD -6 2.5 109.2 12.4 116.0 11.5 94 N Central Pad FD -7 1.5 106.8 12.1 116.0 11.5 92 NEC of Pad FD -8 0.5 108.3 11.9 116.0 11.5 93 N Central Pad FD -9 FG 108.5 12.4 116.0 11.5 93 NWC of Pad FD -10 FG 109.4 12.5 116.0 11.5 94 SWC of Pad FD -11 FG 110.5 12.0 116.0 11.5 95 NEC of Pad FD -12 FG 111.0 12.1 116.0 11.5 96 Garage Pad FINAL COMPACTION REPORT: 1806 Port Sheffield Place, Newport Beach, CA Project No. GC091.2 September 18, 2019 FD -13 FG 111.7 12.2 116.0 11.5 96 Utility Fill 116.0 11.5 (per Soils Report dated February 20, 2018) Trench Backfill FD -14 FG 108.8 12.1 116.0 11.5 94 Flatwork FD -15 FG 112.2 11.7 116.0 11.5 97 Flatwork FD -16 FG 111.2 11.8 116.0 11.5 96 Driveway "FG" = Finish Grade (Ground Level Pad). TABLE 2 SUMMARY OF MAXIMUM DENSITY TEST (ASTM D 1557) Sample Maximum Optimum Location Density Moisture Pc Fill 116.0 11.5 (per Soils Report dated February 20, 2018) FINAL COMPACTION REPORT: 1806 Port Sheffield Place, Newport Beach, CA Project No. GC091.2 September 18, 2019