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231 Old Bernal Ave Page 2 PUD-152 <br />Comments: <br />1.RESOLVED. Moved to Condition of Approval. <br />2.AMENDED COMMENT. CLEAN WATER PROGRAM: Projects that create and/or replace <br />more than 5,000 square feet (0.23 acres) of impervious surface are considered “Regulated” <br />according to Provision C.3.b of the Municipal Regional Stormwater NPDES Permit that <br />regulates stormwater runoff in Alameda County. The Alameda Countywide Clean Water <br />Program developed a C.3 Guidance Manual to assist applicants in addressing these <br />regulations. The Guidance Manual is available for download at: <br />https://cleanwaterprogram.org/development/ <br />Regulated projects must include stormwater treatment measures in the site design to remove <br />pollutants from stormwater upstream of any connection to the City’s stormwater conveyance <br />network. A Stormwater Requirements Checklist must also be submitted to confirm the square <br />footage of existing, new and replaced impervious surfaces per C.3 technical guidance manual <br />Appendix O. Finally, a Stormwater Control Plan must be submitted. These plan sheets shall <br />show the drainage management areas (DMAs) with a corresponding treatment feature. Follow <br />C.3 Stormwater Technical Guidance Section 8. <br />AMENDED COMMENT. When reviewing Stormwater Sheets C5.0 and C5.1, the following <br />issues shall be addressed: <br />a.RESOLVED. <br />b.RESOLVED. <br />c.RESOLVED. <br />d.AMENDED COMMENT. Sheet C5.1 proposes two different types of treatment features <br />(Pervious Pavement and Flow through Planters). The design drawings require additional <br />clarification: <br />(1)RESOLVED. <br />(2)NEW COMMENT. Figures 8-11 through 8-13 of the manual shows typical Flow <br />Through Planter design details. Sheet C5.1 provides a typical flow-through planter <br />section within Detail B as an at grade planter. <br />(a)Confirm that planters #2 through #6 are all at grade planters or if there will be <br />above grade planters. The typical design standard for flow through planters <br />adjacent to structures is above grade due to water and drainage issues to the <br />foundation. If flow-through planters #5 and #6 are at grade planters, the <br />structure’s foundation designer and geotechnical engineer will need to consider <br />these at grade planters in their design. <br />(b)The landscape plans do not match the civil plans for the landscaping within the <br />flow through planters. The plans shall be revised to match and include planting <br />details per the technical guidance manual section 8.2.1, and follow the planting <br />guide in Appendix B. <br />(3)RESOLVED. <br />(4)NEW COMMENT. Sheet C5.1 shows the swimming pool as a self treating area <br />within DMA #2. Swimming pools are considered an impervious surface and shall <br />Page 318 of 373