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Page 2 of 20
<br /> Storm Water Management System Assessment
<br /> Orono Truck Station
<br /> I. Introduction
<br /> Hennepin County Property Services retained MFRA, Inc. to conduct a storm water management system
<br /> assessment at the Orono Truck Station and outline recommended maintenance. This technical
<br /> memorandum details the findings of the inspection and outlines recommendations for repair and
<br /> maintenance. This facility was inspected on January 20�antl March 4th, 2014 under frozen winter
<br /> conditions. A follow-up inspection was completed on June 11th to observe those aspects of the storm water
<br /> management system that were under snow antl ice cover. A storm water management system
<br /> questionnaire was submitted to the facility's manager; however, as of the date of this report a response has
<br /> not been received (see blank questionnaire in the Appendix of this report).
<br /> II. Site Description
<br /> With the exception of the west pond topo survey, the following diagrams were gathered from a technical
<br /> memorandum furnishetl by Hennepin County Property Services, titled "Storm Water Pond Inspection" and
<br /> dated 11/4/2005. The Orono Truck Station contains two ponds; the east retention pontl was built in 2002,
<br /> the west pond was an existing wetland that is being used for storm water treatment. The 2005
<br /> memorantlum addresses the east pond conditions, but did not include a review of the west pontl. The
<br /> ponds receive runoff from the facility's buildings, landscaped areas and paved areas. Figure 1 shows the
<br /> locations of the ponds on site.
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<br /> Figure 1 —West and East Pond Locations
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