PC-2021-18 - Laserfiche WebLink

e. The Happy Valley Specific Plan , Chapter VII "Public Facilities", Section C "Storm Drainage", subsection 2d "Alisal Street Area and Spotorno Flat Area Drainage and Proposed Improvements", requires correction of the following deficiencies: i. Limited flooding occurs along Alisal Street at a low point along the Faith Chapel frontage. The primary cause of this is an undersized street culvert. ii. Poorly defined and incomplete roadside "V" ditches compound drainage problems in this area. The applicant shall redefine and rip- rap line all "V" ditches along the property frontages to improve roadside drainage. f. A connection between the discharge end of a new 36" storm pipe within Parcel A to the existing pipe beneath Alisal Street is proposed. The applicant shall confirm that the condition of the existing pipe is serviceable. If repairs are needed, the applicant shall complete said repairs prior to connecting. Because the existing pipe daylights at the east side of Alisal Street, a new pipe connection will require a junction structure with side openings to receive storm flows from the existing roadside "V" ditch along Alisal Street. (PROJECT SPECIFIC CONDITION) 45. MANHOLES: Referring to the Vesting Tentative Map, the curvilinear alignment of Spotorno Ranch Road at Lots 6 to 10 and 17 to 18 prompted the use of numerous manholes at close spacing. The design shall utilize manufacturer- allowed joint deflection at each storm drain and sanitary sewer pipe segment to reduce the number of manholes to the extent feasible. (Address this condition prior to improvement plan approval) (PROJECT SPECIFIC CONDITION) 46. GRADING/CONFORM ISSUES: Referring to the Vesting Tentative Map, the following grading issues shall be reconsidered in the design (Address this condition prior to improvement plan approval): a. Referring to the Geotechnical Feasibility Report, Figures 2 and 8 show cross-section A-A through a landslide with recommended corrective grading. This area does not appear to be enclosed within the dashed line on the Vesting Tentative Map with note reading, "Approximate limits of landslide repair-remove & replace slide deposit, restore to original grade". This landslide shall be repaired as recommended in the report. b. Section B on Sheet TM 6.0 of the Vesting Tentative Map shall be modified for the grading conform at neighboring properties to the north. In lieu of grading down from the pad to the existing ground surface at the subdivision boundary, instead the section must show retaining walls such PUD-138 and VTM 8616 Planning Commission Page 12 of 30 Page 11 of 30 The applicant shall pay the applicable Dublin-San Ramon Services District (DSRSD) and City sewer permit fees prior to building permit issuance. Such fees include, but are not limited to, the pro-rata share of PUD-138 and VTM 8616 Planning Commission Page 10 of 30 nt. No objections or comments have been received at the time this report was prepared. ect property is not located in a flood hazard zone. As such, the Commission recommends that the City Council conclude that this finding can be made. censed civil engineer, which include but is not limited to the type, location, and sizing calculations of the PUD-114-01M& P20-0995 Planning Commission Page 16 of 25 d) individuals. PUD-114-01M& P20-0995 Planning Commission Page 3 of 25