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HomeMy WebLinkAboutX2021-2633 - SoilsGET®ITECHNICAL Field Memorandum Client: Mr. Taylor Willhoit c/o Willhoit Construction Date: March 30, 2022 Project Address: 1323 Ashford Lane, Newport Beach, CA Project: 22011-01 Subject: Foots Observation for Proposed New Residential Construction Peter Anderson of SA GEOTECHNICAL, INC. (SA) was onsite at the request of the general contractor (Willhoit Construction) and concrete contractor (RDC Concrete) to observe and document the footing excavations for the proposed new residential construction at the subject site. The footing excavations include pad and continuous footings for the proposed main structure, attached garage, playhouse and cabana. The footings exposed engineered artificial fill placed during recent grading operations under the observation and testing of SA Geo. The fill material consists of reddish -brown silty sands and was generally moist and medium dense where encountered. The subject footing excavations for the proposed main residential structure, attached garage, playhouse and cabana at the subject site are considered geologically acceptable for placement of steel and concrete. Any loose material and debris should be removed from the footing excavation prior to pouring concrete. Our services do not include line and grade verification, which is the responsibility of others Respectfully submitted, SA GEOTECHNICAL, INC. Peter Anderson CEG 2596 CERTIFIED ENGINEERING GEOLOGIST OF: Pam- GET®lTECHNIC171_1L� Field Memorandum Client: Mr. Taylor Willhoit c/o Willhoit Construction Date: March 15, 2022 Project Address: 1323 Ashford Lane, Newport Beach, CA Project: 22011-01 Subject: Overexcavation Removal Bottom Observation for Proposed New Residential Construction Peter Anderson of SA GEOTECBMCAL, INC. (SA) was onsite at the request of the general contractor (Willhoit Construction) and grading contractor (Donny Goodwin Enterprises) to observe and document the overexcavation (OX) removal bottom for the proposed new residential construction at the subject site. The removal bottom covers the east property boundary and extends 45-feet to the west into the building pad portion of the site. The removal bottom extends a minimum of 3-feet below design pad grades to an approximate elevation of 97.75' and extends a minimum of 3-feet beyond the proposed structural footprint for the proposed new residential construction. The removal bottom exposed Terrace Deposits consisting of reddish brown silty sand. The terrace material was generally slightly moist to moist and probed medium dense. The subject OX removal bottom is considered geologically acceptable for placement of fill material following scarifying and moisture conditioning in conformance with the approved project recommendations. Our services do not include line and grade verification, which is the responsibility of others Respectfully submitted, SA GEOTECIINICAL, INC. Peter Anderson CEG 2596 No. 2596 y' CERTIFIED V ENGINEERING GEGLGGlST P OF ret 1FOQ GETO1TECHMCAL SOIL ENGINEERING Field Memorandum Client: Mr. Taylor Willhoit c/o Willhoit Construction Date: March 16, 2022 Project Address: 1323 Ashford Lane, Newport Beach, CA Project: 22011-01 Subject: Overexcavation Removal Bottom Observation for Proposed New Residential Construction Peter Anderson of SA GEOTECHNICAL, INC. (SA) was onsite at the request of the general contractor (Willhoit Construction) and grading contractor (Donny Goodwin Enterprises) to observe and document the overexcavation (OX) removal bottom for the proposed new residential construction at the subject site. The subject removal bottom covers the northwest potion of the property and extends from the previous removal area along the northeast edge of the site to the west property boundary. The removal bottom generally extends a minimum of 3-feet below design pad grades to an approximate elevation of 97.75' and extends a minimum of 3-feet beyond the proposed structural footprint for the proposed new residential construction. The removal bottom exposed Terrace Deposits consisting of reddish brown silty sand. The terrace material was generally slightly moist to moist and probed medium dense. Very moist material was locally encountered along the northwest edge of the removal area and pumping conditions were observed. The grading contractor attempted to blend drier material and cement (approx. 20-bags) with the wet subgrade materials in order to bridge the area. The subgrade continued to pump and it was determined that additional removals were necessary to remove the wet material and reach a stable bottom. Removals were locally deepened to extend to a depth of approximately 6-feet bgs (elevation 95'). The removal area was left open to "dry back" and additional cement ordered so that the subgrade could be cement treated prior to fill placement. The subject OX removal bottom should be reviewed by the geotechnical consultant before and during cement treatment in order to determine if it is considered geologically acceptable for placement of fill material. If pumping conditions continue alternative methods of subgrade stabilization may be required. Our services do not include line and grade verification, which is the responsibility of others Respectfully submitted, SA GEOTECHNICAL, INC. Peter Anderson CEG 2596 No, 2596 CERTIFIED ENGINEERING GEOLOGIST GEOTECHMCAL OVI IMIZED SOIL ENGINEERING Field Memorandum Client: Mr. Taylor Willhoit c/o Willhoit Construction Date: March 17, 2022 Project Address: 1323 Ashford Lane, Newport Beach, CA Project: 22011-01 Subject: Overexcavation Removal Bottom Observation for Proposed New Residential Construction Peter Anderson of SA GEOTECHNICAL, INC. (SA) was onsite at the request of the general contractor (Willhoit Construction) and grading contractor (Donny Goodwin Enterprises) to observe and document the overexcavation (OX) removal bottom for the proposed new residential construction at the subject site. The subject removal bottom covers the west potion of the property and extends from the previous removal area along the northeast edge of the site to the west property boundary. The removal bottom generally extends a minimum of 3-feet below design pad grades to an approximate elevation of 97.75' and extends a minimum of 3-feet beyond the proposed structural footprint for the proposed new residential construction. Deeper removals up to a depth of approximately 6-feet bgs (elevation 95') were locally required due to wet, pumping material encountered within the removal bottom. Where wet removal bottoms were encountered, the subgrade materials were cement treated and processed in place prior to fill placement. The removal bottoms exposed Terrace Deposits consisting of reddish brown silty sand. The subject OX removal bottom is considered geologically acceptable for placement of fill material following scarifying and moisture conditioning in conformance with the approved project recommendations. Our services do not include line and grade verification, which is the responsibility of others Respectfully submitted, SA GEOTECIINICAL, INC. Peter Anderson CEG 2596 CERTIFIED J 0 ENGINEERING GEOLOGIST OF cnt_IFOQ GET®1TECZED SOIL ENG ICA 1L� Field Memorandum Client: Mr. Taylor Willhoit c/o Willhoit Construction Date: April 21, 2022 Project Address: 1323 Ashford Lane, Newport Beach, CA Project: 22011-01 Subject: Footing Observation for Proposed Cabana Structure Peter Anderson of SA GEOTECHNICAL, INC. (SA) was onsite at the request of the general contractor (Willhoit Construction) and concrete contractor (RDC Concrete) to observe and document the footing excavations for the proposed cabana structure at the subject site. The footing excavations include pad and continuous footings for the cabana at the southwest comer of the site. The footings exposed engineered artificial fill placed during recent grading operations under the observation and testing of SA Geo. Terrace deposits were locally encountered where deeper excavations were required. The fill material consists of reddish -brown silty sands and was generally moist and medium dense where encountered. The subject footing excavations for the proposed cabana at the subject site are considered geologically acceptable for placement of steel and concrete. Any loose material and debris should be removed from the footing excavation prior to pouring concrete. Our services do not include line and grade verification, which is the responsibility of others Respectfully submitted, SA GEOTECHNICAL, INC. Peter Anderson CEG 2596 BoiE ED ):1011GINEERINGLOGISTPocl=� OF ray\FOB 1000 North Coast Hi,hway Suite 10 • La,una Beach, California 92651 • (949) 403-7Y_'9 • SAgeotechinuil.com