DCPZP-2017-00437 - Laserfiche WebLink

Home Browse Search

• • 1562 Exhibit C I.Permanent Components OfThe Storm Water Management System. a.The storm water management system for the property consists of the following management practices or components: • Stormwater diversion berms/swales and side yard swales. • 6 bio-retention facilities(rain gardens) b.The drainage areas served by the storm water management practices components on this site include portions of Lots 54 through 59,including the roof area of the proposed building of the lots. 2.Inspection And Maintenance Schedule. a.All components of the storm water management system shall be inspected by the Responsible Party,as follows: • Diversion berms/jwaks anti side yard swales: Owner shall visually inspect each diversion benns/swales and side yard swales(collectively referred to as drainage ways)semiannually in the early spring and early autumn. In addition,the drainage ways shall be inspected after large storm event (greater than 2.0" in a twenty-four hour period)for excessive erosion. Eroded areas shall be re- vegetated immediately. Accumulated trash, debris and sediment shall be removed and disposed appropriately. • Bio-retention/lmfiltration Basins(Rain Gardens):The Owner or authorized representative shall inspect these regularly to assess the condition of the basin. Any trash or sediment accumulation shall be removed as soon as practicable after each inspection. Any sediment and/or engineered soil removed from the basins shall be properly disposed. Snow shall not be dumped directly onto the conditioned planting bed. The vegetation at the bottom of the basin shall be kept in good condition. Re-seeding shall be performed as necessary. Maintenance activities shall be in compliance with WD■R requirements,Technical Standard 10004 as follows: ACTIVITY FREQUENCY Replacement of Water Plants As necessary during first growing season Watering during dry periods As needed after first growing season Re-mulching of void areas As needed Re-placement of deceased trees and or shrubs As needed Inspection of soil and repairs to eroded areas Monthly _ • Removal of litter and debris Monthly Placement of additional mulch Once per year b.The following components shall be inspected by the Responsible Party more frequently as follows: No additional or specific inspections or repair procedures are required for any of the storm water management devices on-site. c.The Responsible Party shall make the appropriate repairs whenever the performance of a storm water management practice or component is compromised due to sediment or debris. 3.Beeulations. a.Mowing in rain garden areas shall be minimized to the greatest extent possible in order to maximize filtration of runoff. If occasional mowing is necessary,the mowing height shall be no shorter than six inches in the Bio-retentionlinfrltration areas. Diversion berms/swales and side yard swales can be mowed to a height matching the adjacent yard area.