9311 18TH AVE W A,B 2018-01-02 MF Import

� �a hardpan and very slow throurh it. kun�ff is slow and the hazard of water erosion is slight. The potential for erosion for this type of soil is slight, however special attention should be given to working ihe material in wet weather (October I through �4arch 31). Soil compaction will be diffictdt, if not impossible to achieve during periods of sustained rainfall. Other than rainfall, the source of erosion would come from dus[ and wheel traffic during consVuction. This risk would appear to be minimaL Additional risk would be tracking of mucl onto the roadway. The rock construction entrance will help to minimize ihis risk. Following fin�d grading, all slopes will be stabilized with mulch, jute mesh, hydroseed or other means. E;osion control mcasures will be installed at die direction of thc public works inspector in accordance with the City of Gverett Design and Constructiou Standards. This will most likely consist of filter fabric fences down slope of'tills, rock construction entrances, sediment traps, hydroseeding and/or mulch, gravel cover and sediment traps, or others �ippropriate for the season and site conditions at the time of construction. V. Anulysis ancl llesign of Required Runoff Control ('1'reutment and Stream I3ank Erasion Control 13MPs The detention system is designed to detain developed runoff ro DOG stream bank erosion control standards. Treatment will be providecl witli a Storm Filter, manufacttned by Stonnwater 3G0 (formerly Stonu Water Mdoagement, Inc.). llead storage equal to 30% of the 6-month, 24-hr devcloped event is provided with the �dditional catch in the type II manholes. VI. AnailJ�sis und llesign of Rcyuired Source Control 13MPs 5-120: A covenant shall be nttached to the property prohibiting vehicle maintenance on the site. If units are to be rented, the covenant shall state that a clause prohibiting vehicle nuiintenance on the si�e will be written into Ihe tenant Ieases and or rental agreements. The rovenant shall be signed and mcordecl by die owner of the propem . A note prohibiting vehicle maintenance on the site is included on the storm draina�ge plans. S-I50: Garbage for each unit will be kept under cover. S-190: Vegetation Rr pest management will be pertbrmed by professional landscaping and pest management companies. 5-200: Maintenance of the drainnge system will be performed by the homeowners with the exception of the filter, which wiil be maintained by Stormwate� 360. S-220: Sueet sweeping will bc conducied by professiona!s in this (ield.