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S. Due to the size of this project, both water treatment and hydromodification measures are necessary. Calculations shall be provided that show this water detention facility is adequate to detain and treat storn~water from this site prior to issuance of building permits for this project. For more >I~fonnation, please see the C.3 Stonnwater Technical Guidance Handbook, which is available at: http•//www eoainc com/download/ACCWP Tech ~iidance-black text.pdf T. Since this project disturbs over one acre of land, a State general Construction Activity Permit shall be obtained. Applicant shall submit a Notice of Intent (NOI) and prepare a Storm Water Pollution Prevention Plan (SWPPP) to the satisfaction of the City Engineer. U. The revised National Pollutant Discharge Elimination System (NPDES) Permit, issued by the San Francisco Regional Water Quality Control Board in February 2003, imposed new requirements on developers and local agencies. In addition to requiring developers to install stormwater treatment measures, the Developer shall sign a Stormwater Treatment Measures Maintenance Agreement for the maintenance of the treatment measures in perpetuity. The Agreement shall detail the proposed maintenance activities and the intervals at which they will be conducted for each stormwater treatment measure included in this project. A signed Maintenance Agreement shall be included with the building permit submittal. V. Runoff from trash enclosures, recycling areas, or similar facilities shall not discharge to the storm drain system. Trash enclosure areas shall be covered and designed to avoid run-on to the trash enclosure area. No drain shall be installed within the trash enclosure. Good housekeeping procedures and appropriate dry/spot cleaning best management practices shall be utilized to keep the trash enclosure area clean. W. Sidewalks and parking lots shall be swept regularly to minimize the accumulation of litter and debris. Debris resulting from pressure washing shall be trapped and collected to prevent entry into the stone drain system. Wash water containing any soap, cleaning agent or degreaser shall not be discharged to the storm drain and shall be collected and discharged to the sanitary sewer or collected and treated prior to being lawfully disposed. X. All on-site stone drains shall be cleaned or inspected and, if necessary, cleaned at least once a year immediately prior to the rainy season. Additional cleaning may be required by the City Engineer. Y. Roof drains shall discharge to an unpaved area wherever practicable. Z. If the design of any site improvements requires encroachments onto neighboring properties during construction, written agreements with that property owner(s) Agreement to Conditions September 6, 2007 PLN2007-00040 Page 10 of 16