1601 N Bristol St - Phase 1 - Plan

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Mr. Amir Houriani Project No. 32-6235-00 1601-1607 N. Bristol Street August 29, 2022 recommended for the proposed development due to the potentially liquefiable natu soils. CONSTRUCTION CUTS CITY OF SANTA ANA Planning and Building Agency Ar ',v Page Approved FOR PERMIT ISSUANCE Master ID: 90186 underlying Construction cuts up to five feet high may be excavated vertically for their entire length and height provided they do not undermine adjacent buildings or property line walls; otherwise, the construction cuts will need to be excavated using the 'A, B, C' slot -cutting method. If the slot -cutting method is used, the cut should be opened at a gradient of 1:1 first, then each slot opened, and the removed soils replaced as engineered compacted fill before the subsequent slot is opened. The slots should not exceed 8 feet in width and 12 feet in height. If the construction cuts are to remain open for more than two weeks or if rain is expected while they are open, they should be covered by a plastic membrane kept in place by holding blocks or driven re -bars at the top and bottom of the membrane. No equipment or personnel should stand closer than ten feet from the top of the temporary cut. A representative of this office should examine the construction cuts periodically to verify performance. All construction cuts should comply with the State of California Construction Safety Orders (CAL/OSHA). EXCAVATION OBSERVATIONS Bottoms of excavations are to be examined and approved by the geotechnical engineer or his/her representative before any fill is placed. All footing excavations should be observed by a representative of our firm and the City Inspector prior to placement of any steel or concrete to confirm the bearing materials meet the requirements set by this report. Footing excavations should be kept moist and concrete should be placed as soon as possible after excavations are completed, observed and approved by our firm and the City inspector. DRAINAGE Adequate drainage is essential to the performance of the project. Saturation of soils can cause a reduction in shear strength and increase in compressibility, resulting in a change in the designed engineering properties of the soils. Proper site drainage should be continuously maintained and conducted away from any structures to prevent ponding and to reduce infiltration of water into the bearing soils. All pad and roof drainage should be collected and transferred to an adjacent street/alleyway or an approved area in non -erosive drainage devices. Drainage should not be allowed to descend upon any slope in a concentrated manner. The installation of roof gutters and downspouts which deposit water into a buried drain system should be installed instead of discharging surface water into planter areas adjacent to structures. It is recommended that all drainage adjacent to footings be conducted away from structures by a minimum 3-foot-wide apron measured perpendicular to the face of the wall and sloped at a minimum 2% gradient into an approved non -erosive device. Alternatively, we recommend a minimum 5% slope away from the face of a building wall for a minimum horizontal distance of ten feet (where space permits). n rSn_ A.G.I. Geotechnical, Inc. • 16555 Sherman Way, Suite A • Van Nuys, CA 91406 Zl Office: (818)785-5244 • Facsimile: (818)785-6251