08/26/2014 - Laserfiche WebLink

Home Browse Search

LAUD"'ERVI" "ALE 'COUNCIL ACTION FORM Action Requested Consent Public Hearing Discussion X Action X Resolution Work Session Meeting Date August 26, 2014 ITEM NUMBER Sidewalk Proi ect Revisions STAFF INITIAL A small revision may need to be made to the sidewalk project due to storm water require- ments. Below is a summary from the City Engineer explaining why. • There is a discrepancy in the interpretation/wording of the Storm water Management Rule (Rule C) of the Rice Creek Watershed District. If you read Rule 2.b on P. 14 of the Rules (see link below), we took it to mean that a Public Linear Project does not require a permit unless it is within a Resource of Concern Drainage Area AND above 10)000 SF in impervious area. • Figure C 1 E of the Rice Creek Rules (P. 3 0 of link below) clearly shows that our proj ect is NOT within a Resource of Concern Drainage Area, since it all flows to the south into the Capitol Re- gion Watershed District. (The southern boundary line is Larpenteur Ave). • However, District Staff said it was not the intent to exclude areas that were not hydrologically within their District from being in a Resource of Concern Drainage Area, and therefore our pro- ject would be subject to the storm water rule if it exceeds the 10,000 SF threshold, as long as it is within the jurisdictional boundary of the District (which it is). Link to District Rules: http://www.ri*cecreek.org/vertical/Sites/%7BF68A5205-A996-4208- 96B5-2C7263CO3AA9%7D/uploads/FINAL ADOPTED_RULE_06-26-2013.pdf So, per the District's interpretation of the rules: • Per the Rice Creek Watershed District Rule C: Stormwater Management, a public linear project requires a permit if it creates or reconstructs 10,000 square feet or more of impervious surface. • Any trail/sidewalk 10' wide or less with a 5' vegetated filter strip (i.e. grass boulevard) down - gradient of it is exempt from being included as impervious surface. • Alternate 3A would have come in below the 10,000 SF threshold as most of the sidewalk be- tween Pleasant and Fulham had a 5' boulevard and would therefore not be included as impervi- ous surface. • Alternate 4 eliminates this buffer strip/boulevard on the easternmost block and brings the total impervious surface area to be created/reconstructed up to 11,480 SF, which would trigger the Stormwater Management rule requirements.