5.9. PCSR 09-28-2004 - Laserfiche WebLink

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NAPA Auto Parts September 22,2004 Page 2 required to adopt and implement the City's Storm Water Pollution Prevention Plan (SWPPP). • A slight rise should be designed into the site grading plan at each driveway location to keep storm water runoff from exiting the driveway, but rather, internally picked up in the storm sewer system. • There is a minor amount of grading off of the site onto Lot 3 to the north. The owner's permission will be necessary for this grading. • The site does show silt fence around its entire perimeter with one opening for construction activities provided with a rock construction driveway. • When Mississippi Ridge was developed,ponding for the entire site was incorporated into the development. Therefore,there is no need for ponding on each individual lot. 3. Utility Plan • The site is proposed to be served by a six-inch water service and a six-inch sanitary sewer service from Yale Street. The utility plan shows placing a hydrant in the median on the lot side of the property line and then extending six-inch watermain into the building for fire and domestic service. A small utility and drainage easement should be granted for the fire hydrant or the hydrant moved closer to the property line to fall within the existing drainage and utility easement so that the Municipal Utilities has the right to operate and maintain the hydrant. • The post indicator valve is shown fairly close to the curb line. It may be better to move it further from the curb line to protect it or to place some bollards around the valve for protection. • The sanitary sewer service is shown to have two clean-outs. Actually,only one would be required since the service will be over 100 feet in length. One of the clean-outs is shown to fall in the blacktop parking lot. An appropriate casting should be placed over this clean-out to protect it from vehicle traffic. • Catch Basin #3 should be moved south along the curb to the middle of the lot and a more-defined low point created to capture drainage. If you have any questions regarding any of these comments, please call. Sincerely, Terryy J. Ml urE. City Engineer • S:\PLANNING\Case Files\2004\CU 04-25 Napa\Engineer's memo 9-22-04.doc