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Stormwater Erosion
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Stormwater Erosion
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Last modified
7/9/2014 4:04:38 PM
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7/9/2014 4:04:27 PM
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PW_Document_Type_ Operating
Correspondence
PW_Division
Parks and Open Space
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Assumptions and Omissions: <br /> 1. The location of development activity in the city more or less mirrors the location of vacant lands in <br /> the City. <br /> 2. Vacant is identified as having a land use code in the regional parcel data base. adgeo) of <br /> vacant, agricultural, or timber. <br /> 3. The ratio of lots over 5 acres to lots under 5 acres is as constant for building permit activity as it is <br /> for vacant lots as a group. <br /> 4. Basic stats: 3. <br /> Vacant Lots: 671 671 <br /> Vacant Lots GT 5 Acres: 3 ) <br /> (7% of total) <br /> Vacant Lots LT 5 Acres: <br /> Vacant Lots LT 5 Acres in Sensitive Areas: . 3151. <br /> (not in government ownership): <br /> . 130. (45% of total) <br /> 5. Analysis looked only at issued permits for 199 <br /> we are treating it as though it were three fus since Jan <br /> 3 <br /> We don't quite have a full year of data for <br /> years of data so that we can average the volumes. Numbers include situations where many <br /> buildings were built on the same taxlot, such as apartment complexes. <br /> 6. Based on 7% of vacant lots being over 5 acres, and 45% of vacant lots under 5 acres falling within <br /> a sensitive area, assume that 52% of permits for new building construction would be subject to the <br /> construction site regulations. The % of additions that would be subject to the regs is assumed to <br /> be 45 %, the logic being that most additions would not be on large lots. <br /> 7. The average and inspection time would be greater for new construction than for additions. The <br /> average time required is: Additions <br /> Const dditions <br /> Review: 2 hours l ours <br /> Inspect: hour 2 hours <br /> 8. The types of activities envisioned in this analysis include review of erosion control plans and <br /> comparison of building permit plans with approved erosion control plans; documentation of <br /> construction site management practices expected on site; inspection at key points as well as <br /> unscheduled and unrequested inspections; familiarization with site for anticipation of problems. <br /> 9. This analysis doesn't specifically account for the time needed to provide customer support at the <br /> counter or to go through the intake process - the determination of whether development on a <br /> particular parcel requires an erosion control permit. We need to apply some factor for this <br /> additional work, which will actually be distributed among a number of work units. <br /> ivity <br /> 10: The cumulative effect of Construction Site d a ds g v (with to On S e Controls) and ural <br /> Standards, Stormwater Development Sta <br /> Resources Code Amendments may suggest a different approach to implementing this program <br /> than just implementing construction site management practices alone. <br />
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