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Home My WebLink AboutX2017-0264 - MiscX2011-02614 100 VGsi Wino way COMMUNITY DEVELOPMENT DEPARTMENT BUILDING DIVISION 100 Civic Center Drive I P.O. Box 1768 1 Newport Beach, CA 92658-8915 www.newoortbeachca.aov 1 (949) 644-3200 PRE -GRADE MEETING AGREEMENT DATE: ! m i0 —I JOB ADDRESS: 102.? — (A) 69-r W e N b WAV 1 1. The grading plan check number for this site is and will be referred to in all reports, certifications and correspondence. 2. STOP ORDERS Whenever any work is being done contrary to the provisions of the City Codes, the Chief Building Official or his authorized representative may order the work stopped by notice in writing served on any persons engaged in the doing or causing such work to be done and any such persons shall forthwith stop such work until authorized by the Chief Building Official to proceed with the work 3. The stamped set of approved plans shall be on the job site at all times. 4. NOTIFICATION OF NONCOMPLIANCE If, in the course of fulfilling their responsibilities, the civil engineer, surveyor, the soils engineer, the engineering geologist or the testing agent finds that the work is not being done in conformance with the approved grading plans, the discrepancies shall be reported immediately in writing to the person in charge of the grading work and to the Building Division. Recommendations for corrective measures, if necessary, shall be submitted to the Building Division for approval. S. When import or export of materials is required, haul routes to and from the site shall be approved by the City Traffic Engineer and hauling procedures shall be in accordance with Chapter 15 of the Newport Beach Municipal Code (NBMC). Contractor shall use Best Management Practices (BMP's) to insure that all water quality issues are addressed. 6. Between October 1 and April 30, erosion control BMP measures shall be in place. During the remainder of the year dry season wind erosion BMP's (dust control) shall be implemented. Sediment control BMP's shall be installed and maintained at all operational storm drain inlets internal to the project. BMP s to control off-site sediment tracking shall be implemented and maintained. Appropriate BMP's to prevent contamination of stormwater from construction activities shall be implemented. A "weather triggered" action plan and the ability to deploy BMP's to protect all exposed portions of the site within 48 -hours when the National Weather Service forecasts a 50% or greater chance of rain. 7. All fills shall be compacted throughout to a minimum of 90 percent compaction as determined by ASTM test method 1557 and approved by the soils engineer. Compaction tests shall be performed according to the preliminary soils report 8. All trench (including interior and exterior utility trenches) and retaining wall backfill shall be compacted throughout to a minimum of 90 percent relative compaction and approved by the soils engineer. 9. Whenever work on which required inspection/testing is covered by additional work without first being inspected/tested, the Chief Building Official shall require by written notice that the work be exposed for examination. The work of exposing and recovering shall not entail or be subject to expense to the City of Newport Beach and will be the sole expense of the Permittee. 10. Landscaping of all slopes and pads shall be in accordance with 15.10.130 of the NBMC. 11. Approved drainage provisions shall be used to protect adjoining properties during the grading operation. 12. The permittee or his agent shall notify the Building Division when the grading operation is ready for each of the following inspections: a. PRE -GRADE MEETING When the permittee is ready to begin work, but not less than two days before any grading or brushing is started. b. DRAINAGE DEVICE INSPECTION After forming of terrace drains, down drains or after placement of pipe in subdrains, but before any concrete or filter material is placed. C. SPECIAL d. ROUGH GRADING When all rough grading has been completed, the rough grade report shall be provided to the Building Inspector at foundation inspection or sooner based on the Building Inspector's discretion. e. FINAL When all work, including installation of all drainage structures and other protective devices, has been completed and the as -graded plan, professional approvals and the required reports have been submitted. 13. All footing excavations, slab on grade areas and subdrains shall be inspected and approved by the Geotechnical Engineer or Engineering Geologist Written approval shall be submitted to the Building Inspector. 14. Prior to the start of grading, all permanent property comer monuments shall be in place. Prior to any foundation inspections, proof of recordation of the "comer record" or "record of survey" with the County of Orange shall be provided. 15. The undersigned acknowledge a copy of the above and agree to comply with the Grading Code of the City of Newport Beach, the recommendations of the project soils report and any special requirements of the permit 16. Prior to foundation inspection a Line and Grade Certificate Forth must signed and stamped by the surveyor of record and submitted to the building inspector. A Structural Observation Report may be required. 17. All parties listed below must be present for the pregrade meeting unless approved by the building inspector. 18. All duplex construction requires separate utilities (sewer, water, gas, electrical, fire sprinkler risers). OWNER/CONTRACTOR: By: _ Address: Telephone: C GEOTECHNICAL ENGINEER. LNTOi} ITS( By. CCAS -T C-)CD-iecwt1 (CFly `0( - Address: �2� YV • COinYt1(SNNt�il7l1 hU� of CvR7GP1 Telephone: ii4 4�?�— 12t1 GRADINGCONTR.: aye Lirra�i_ By: Address: l �l �iT s' /L /u �- 5� . s) -Lao 161 - Telephone: DESIGN CML By: Address: Telephone: Ate+ r GEOLOGIST.: �tt I �2KSrt�l(N1C hL By: Address:1 eCIVK1i61U�flt71f RUG- j�UL�N Telephone: '}LA'S`jo-- (ZIC 9133 COORDINATOR: By-, Address: Telephone: NEWPORT BEACH REPRESENTATIVE: PHONE #: INSPECTION REQUESTS: (949) 6443255 Newport Beach Construction Hours: Monday through Friday: 7:00 a.m. to 6:30 p.m. Saturdays: 8:00 a.m. to 6:00 p.m. No work on Sundays and Holidays FannalpregMde meeting agreement 6-18 4017.0,9614 COAST GEOTECHNICAL, INC. 1018 West Wind Way 1200 W. Commonwealth Avenue, CA 92833 Ph: (714) 870-1211 Fax (714) 870-1222 E-mail: coasteeotec(?�sbcalobal net November 8, 2018 Mr. and Mrs. Gary Wescombe 1028 West Wind Way Newport Beach, CA 92660 References: W.O. 521416-03 Subject: Rough Grade Compaction Report for Slope Restoration 1028 West Wind Way, Newport Beach, California 1. Geotechnical Investigatibn of the Existing Rear Slope Stability as a result of the Installed Landscape Retaining Wall, 1028 West Wind Way, Newport Beach, California, by Applied Geotechnical, Inc., W.O. 163-20, dated April 20, 2016. 2. Recommendations for Removal of Gravity Walls and Slope Restoration at 1028 West Wind Way, Newport Beach, California; by Coast Geotechnical Inc., W.O. 521416-01, dated October 28, 2016. Response to Plan Check Corrections Slope Restoration at 1028 West Wind Way, Newport Beach, California; by Coast Geotechnical Inc., W.O. 521416-02, dated May 16, 2018. Dear Mr. and Mrs. Wescombe: Forwarded herewith is the rough grade compaction report for the slope restoration. The grading operation was conducted from October 5, 2018 through October 19, 2018, utilizing the referenced geotechnical report as a guideline. COAST GEOTECHNICAL, INC. provided periodic observation and testing during that time period as requested by the project contractor. SITE EARTHWORK Non -permitted landscape retaining walls were constructed on the slope just below the rear patio adjacent to the existing residence. Following the walls being removed, compacted fill material was placed in the subject area for the restoration of the slope. Earthwork was based on grading plans prepared by CRF Engineering, attached as Plate 1. Line and grade was set by the grading contractor, Cousyn Grading and Demolition. The grading contractor was responsible for following line and grade of the earthwork performed. FILL SLOPE RESTORATION AND FILL PLACEMENT Fill slope restoration consisted of excavation of a keyway just below where the lowest wall was removed. The keyway excavation extended a minimum of one foot into competent bedrock and two feet below the grade at the toe. The width of the keyway was a minimum four to five feet, with the keyway bottom sloped back toward the heel. At the keyway heel a subdrain was placed in accordance with project geotechnical recommendations. As slope restoration progressed, benching into competent bedrock was performed and geogrid was placed every twelve inches in COAST GEOTECHNICAL, INC. Mr. and Mrs. Gary Wescombe 2 W.O. 521416-03 Roush Grade Compaction Report November 8 2018 vertical height, and extended at least four to five feet into the slope, as measured from the finish slope face. Fill slope surfaces were tracked rolled to a firm condition. The geotechnical engineer or representative prior to processing observed exposed excavation bottoms to be founded in competent bedrock. Upon approval, the excavation bottoms were processed; moisture conditioned to 3-4% percent over optimum moisture content and compacted to a minimum of 90% relative compaction. Subsequent fills were placed in six to eight inch loose lifts, moisturized to a minimum of 34% percent over optimum moisture content, and compacted to a minimum of 90% relative compaction. This process was followed to finish grade. Equipment used for compaction of fill consisted of mechanical hand compactors and a vibratory plate on the slope face. Earthwork was performed by Cousyn Grading and Demolition. The grading contractor was responsible for securing any needed survey of the as built slope conditions and for compliance with the final slope gradient being at 1.5:1(H:V) or less. Slope restoration constructed under the observation of the project geologist and soil engineer are expected to perform adequately, provided proper slope maintenance, watering, and drainage is maintained. Slope maintenance guidelines are appended. It is our understanding that a landscape plan has been developed for planting of the slope. SLOPE SUBDRAIN At the heel of the keyway a subdrain was installed per project geotechnical reports. The subdrain consisted of four inch diameter perforated pipe placed holes down on a bed of 3/4 -inch gravels. The pipe was then covered with 3/4 -inch gravels. The gravels were wrapped in filter cloth. A solid outlet pipe was connected to the middle of the pipe lineally and directed toward the slope. The grading contractor was responsible for securing any needed survey of as -built subdrain conditions. We have approximated its location on Plate 1. A subdrain outlet was observed to be present at the completion of grading. The client is responsible for keeping the outlet clear of debris and soil, so as to allow proper flow of drainage. The client is advised that blockage of the subdrain system is detrimental to the stability of the site slope. TESTING Maximum density optimum moisture relationship determinations were performed for each soil type encountered during grading operations. Test results were as follows: Laboratory Standard: (ASTM:D-1557) 4 -inch diameter mold; 1/30 ft3 volume; 5 layers at 25 blows per layer; 10 lb. hammer dropped 18 inches COAST GEOTECHNICAL, INC. Mr. and Mrs. Gary Wescombe 3 W.O. 521416-03 Rough Grade Compaction Report November 8, 2018 t Classtf�catLon OptimumlWloisfure, °fo Compaction tests were performed a minimum of every two feet and/or 500 cubic yards of compacted fill soils placed. These tests were performed in accordance with the ASTM test method for nuclear gauge. The test results are summarized in Table 1. The approximate test locations are shown on Figure 1. Shear strength parameters of placed fill soils meet or exceeded those utilized for geotechnical analysis of site conditions. REGULATORY COMPLIANCE I hereby certify that the subject grading was observed by a representative from this office, and the work was done in general compliance with the Grading Ordinance of the City of Newport Beach and in accordance with the best accepted practices of the applicable chapter of the California Building Code. All cuts, fills or processing of original ground under the purview of this report have been completed under the observation of and with selective testing by COAST GEOTECHNICAL, INC. and found to be in compliance with the Grading Code of the City of Newport Beach. The completed work has been observed by COAST GEOTECHNICAL, INC. Our findings were made and recommendations prepared in accordance with generally accepted professional engineering practices, and no further warranty is implied nor made. This report is subject to review by the controlling authorities for this project. We appreciate this opportunity to be of service to you. Respectfully submitted: COAST GEOTECHNICAL, INC. Min Tarn Chen g g QROVESS/� RCE 54011 ��o ,—pRNc No. 54011 Exp. 12/31 /18 4el ZEH rc ((( r41le�� Staff Geologist ax Drj Densityilhslii� e, :, Ty$ 'Zi . ,r ,... n:.-... Lt. Gray Tan I 30.0 72.0 Diatomaceous Silt Compaction tests were performed a minimum of every two feet and/or 500 cubic yards of compacted fill soils placed. These tests were performed in accordance with the ASTM test method for nuclear gauge. The test results are summarized in Table 1. The approximate test locations are shown on Figure 1. Shear strength parameters of placed fill soils meet or exceeded those utilized for geotechnical analysis of site conditions. REGULATORY COMPLIANCE I hereby certify that the subject grading was observed by a representative from this office, and the work was done in general compliance with the Grading Ordinance of the City of Newport Beach and in accordance with the best accepted practices of the applicable chapter of the California Building Code. All cuts, fills or processing of original ground under the purview of this report have been completed under the observation of and with selective testing by COAST GEOTECHNICAL, INC. and found to be in compliance with the Grading Code of the City of Newport Beach. The completed work has been observed by COAST GEOTECHNICAL, INC. Our findings were made and recommendations prepared in accordance with generally accepted professional engineering practices, and no further warranty is implied nor made. This report is subject to review by the controlling authorities for this project. We appreciate this opportunity to be of service to you. Respectfully submitted: COAST GEOTECHNICAL, INC. Min Tarn Chen g g QROVESS/� RCE 54011 ��o ,—pRNc No. 54011 Exp. 12/31 /18 4el ZEH rc ((( r41le�� Staff Geologist COAST GEOTECHNICAL, INC. Mr. and Mrs. Gary Wescombe 4 W.O. 521416-03 Rough Grade Compaction Report November 8, 2018 COMPACTION TEST RESULTS TABLE I F.G.- Finish rough grade ki at 1 eStu PIKf ".1Z 66"N -T Op PMi HN VW 1 Keyway 52.0 35.0 65.2 1 90.6 10/5/18 2 Keyway 53.0 30.3 65.6 1 91.1 10/8/18 3 Keyway 53.5 31.0 65.3 1 90.7 10/8/18 4 Fill Slope 54.5 30.9 65.4 1 90.8 10/10/18 5 Fill Slope 54.5 34.7 65.3 1 90.7 10/10/18 6 Fill Slope 54.0 34.1 65.5 1 91.0 10/11/18 7 Fill Slope 55.5 35.0 65.1 1 90.4 10/11/18 8 Fill Slope 56.0 34.1 65.5 1 91.0 10/12/18 9 Fill Slope 57.0 33.5 66.4 1 92.2 10/12/18 10 Fill Slope F.G. 30.3 65.6 1 91.1 10/19/18 11 Fill Slope F.G. 30.1 65.8 1 91.4 10/19/18 F.G.- Finish rough grade COMPACTION TEST LOCATION PLAN sni _ f•r ..., L7Y1Fri (SA.I.GF, i WAY WTIINE r TS if .c�` , . :�)IW• :c • r tSa5d�t6"sipF""ma.__..aN tY8o1S' 7•A�dsY u �ynp5 ! IF 1 5i Tfks; T oA,aAocA. Iw„TS a.?A,5l!� FIM 2 N. UD kJ s.7Ylj Ns =sm{sass:w ��' tssa2 � S3%SC, . - rl' i ,59.5_ (s9.Ot�f� �{f� y • {T:l.4riH •x,`5157) jRa5s `�' 'S. 551;YiA: lam' '}ulp :s c!�'�'^.'• 7.1il ' �• 4 ,iftffiF i!°- .....c.` cco: I'''I.f,t " �'l �� ! k• I: i<a a:m. Scale: 1"=20' -z (5s +)n!s lwdo, 1-S!tliY SUItxE FAa§.Y tEVMCE FCU11W MEAS SF1iw4S�wt! II � ao Approximate she �(r Compaction Approximate ;! Test Location Limits of Drainage Pipe Solid Outlet ] Rough Grading Compaction Report Work Order 521416-03 1028 Westwind Way Newport Beach, California Plate No. 1 COAST GEOTECHNICAL, INC.