Reso PC15-11 PC Reso (3107) Tentative Map 150 ECR and 20 Avondale

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project's Tentative Map, approved on without written•approval from the Engineering Department. 41 . Treatment controls shall be designed and sized to treat run-off from the entire redevelopment project (including all existing, new, and/or replaced impervious areas) using flow or volume based sizing criteria specified in Provision C.3.d of the Municipal Regional Stormwater Permit. 42. 0n-site storm drain inlets shall be clearly marked with the words "No Dumping ! Flows to Bay, " or equivalent using thermoplastic material or a plaque. 43. Infiltration devices shall not be used where confirmed seasonal high groundwater is less than 5 feet from the bottom of infiltration measure or device. 44. Soil media within the bioinfiltration measure shall consist of 18 inches of biotreatment soil consistent with the Attachment L of the MRP. 45. Design of biotreatment measures shall be consistent with technical guidance for the applicable type of biotreatment measure provided in Chapter 6 of the C. 3 Technical Guidance. 46 . Applicant shall coordinate installation of stormwater treatment measures with the municipality and shall arrange to have the City's designated inspector present at the time of installation . 47 . Applicant shall arrange for final inspection of installed treatment measure by the City's designated inspector within 45 days of installation or project construction completion , whichever comes first. 48. Projects with architectural copper should, if possible, purchase copper materials that have been pre-patinated at the factory. Whether patination is done offsite or onsite, applicant should consider coating the copper materials with an impervious coating that prevents further corrosion and runoff. If patination is done on-site, implement one or more of the following: a. Discharge the rinse water to landscaping. Ensure that the rinse water does not flow to the street or storm drain. Block off storm drain inlet if needed . b. Collect rinse water in a tank and pump to the sanitary sewer. Contact your local sanitary sewer agency before discharging to the sanitary sewer. c. Collect the rinse water in a tank and haul off-site for proper disposal. 49. Streets surrounding project site that are damaged during construction shall be restored to the satisfaction of the City Engineer at project completion . When this requires pavement restoration (such as a slurry seal), Applicant shall consult with the City Engineer to receive the preferred layout of pavement markings. ATTY/RESO,3107/PC RESO TENTATIVE MAP 150 EL CAMINO & 20 AVONDALE REV: 06-23-15 VR Page 9 of 14