COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

SITE IMPROVEMENT PLAN DRAINAGE REQUIREMENTS SAN JOAQUIN COUNTY COMMUNITY DEVELOPMENT DEPARTMENT 1810 E. HAZELTON AVENUE, STOCKTON, CA 95205 TELEPHONE: (209) 468-3120 BUSINESS HOURS: 8:00 a.m. to 5:00 p.m. (Monday through FrIdayi New development will provide for all of the storm water runoff generated. The use of roadside ditches or gutters are not allowed, unless approved by the Public Works Department. All existing development shall provide for the additional storm water runoff that is generated In accordance with current design standards. The improvement Plan shall show the location of existing and proposed storm drainage facilities (check with Engineering staff regarding design criteria). If subject to flooding, the 100-year flood elevations must be shown. Indicate any unusual topographic features of the site (e.g. contours, steep slopes, or drainage courses). All developments shalt provide terminal drainage where the development is within close proximity (see chapter 9-1135 of the County Development Title) to terrninal drainage facilities. "Terminal drainage" means a storm drainage system which by gravity carries storm water ultimately to the ocean. When terminal drainage is not readily available, storm drainage run-off shall be retained on-site, and provisions shall be shown on the Improvement Plan. Retention ponds are drainage ponds with no outlet facilities for terminal drainage. They must be designed to be capable of storing the required volume and of emptying through percolation and evaporation over a specified time. If applicable, pond capacity calculations shall be submitted for approval (see attached calculation form for retention ponds). If retention ponds are to be used In combination with other uses In addition to storm water runoff (e.g. dairy farms), then caleulations shall be provided to show that the ponds are sufficiently sized for both uses (Refer to handout entitled "Drainage Requirements Dairy Farms").