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-� B Q L.T't��i �s. t"\✓'� ��'��,,{. � , i f'�•j�m <br /> . i � C;onsulfi�'_�g E;Raineers & Surrueyors <br /> " '� ; 2638 Shadow Lane,Sulte ZUO � Chaska, MN 55318-1172 <br /> Phone(952)44&8838•Fax(952)4A�8805 <br /> www.bolton-menk.com <br /> August 24,2015 <br /> City of Orono <br /> Attn: Melanie Curtis <br /> 2750 Kelley Pazkway <br /> Orono,N�T 55356 <br /> RE: CLTP Applicadon 15-3725 <br /> 4167 Highwood Road <br /> Engineering Review#2 <br /> Dear Melanie: <br /> As requested, we have completed an engineering review of the documents submitted for the above <br /> zeferenced project. We offer the following observations,comments, and recommendations for your <br /> consideration: <br /> 1. The Applicant is progosing to perform site grading of approximately 100 cubic yards and install <br /> riprap along the shoreline. If material is to be imported tv tEie site,the City should consider the <br /> fo�lowing; <br /> a. The City Engineer should be allowed to inspect any riprap or fill being imported to the site prior <br /> ta it being place�i. <br /> b. T'he Applicant should confirna with the City Engineer acceptable hours of truck hauling and <br /> provide documentation on the haul route to be used. Acceptable hours and haul route should be <br /> approved prior ta the importing of any riprap or fill, <br /> c. The City Engineer should inspect roadways on haul route prior to and following completion of <br /> work to determime whether adverse impacts have occurred, The applicant should be responsible <br /> for the repair to roadways foz any adverse impacts. <br /> 2. Perimeter erosion control rnaasures should be installed by the Contractor and inspected by the City <br /> prior to any land disturbing activides. <br /> 3. Disturbed areas must be permanendy stabilized within 7 days of completing grading and wall <br /> constructian opexations. The Green-Dale Design Plan should be revised to indicate locatians and <br /> schedule far re-vegetation or a Landscape Plan should be submitted with the necessary information. <br /> 4. T`he size of rock to be used for stabi�izing the base of the sub-wall systena should be specif'ied on the <br /> plan. Minimum Class V riprap{6"to 30")is recommended, <br /> 5. Due to the extent of work proposed, it is recommended that a fina�o.cial security of$5,OQ0 for erosion <br /> control and engineering oversight be required of the Applicant. The financial security is intended to <br /> proviide protection in ihe event that it becomes necessary for the City to install or maintain erosion <br /> and sediment control within the project area and covers the cost of vegetation re�stablishment if the <br /> applicant is unable to follow through with the conditions of approval, <br /> 6. The applicant may be required to obtain Minnehaha Creek Watershed District(MCWD) approval <br /> and permitting fvr their Erosion Cantrol, Shoreline and Streambank Stabilization, and Floodplain <br /> Alteration Rules. A copy of any approvals or perrnits required should be snbmitted prior to final <br /> approval. <br />