Agenda - Council Work Session - 09/04/2012

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A2012 -7 Staff Report June 5, 2012 Page 13 of 16 West Main Street has 16,700 vehicles daily therefore the additional traffic created is a small percentage of the total vehicle traffic on major roadways adjacent to the site. Site circulation is accomplished through several two -way drive aisles throughout the site. There is a one -way drop off area in front of the main entrance. Parking The site is designed for 300 regular parking stalls and 8 handicap stalls. The following is what is required by Anoka City Code for a 60,000 sf. medical office /clinic. Source: Chapter 74, Article IX, Division 2, Section 74 -522 of Anoka City Code Grading, Drainage and Utility Plans These plans have been reviewed by the city's engineering, fire, and electric departments. Initial review comments were made by all of these departments and plans were amended to meet the original concerns. Stormwater plans will be reviewed by the Lower Rum River Watershed Management Organization (LRRWMO) at their June 21 meeting. Staff will require a condition of approval that the LRRWMO permit must be obtained prior to the any site grading and /or issuance of the building permit. A letter is included from Bob Obermeyer of Barr Engineering who is the consulting engineering for the LRRWMO. His letter to the board recommends approval of the watershed permit with several conditions. The developer is proposing a somewhat unique way to treat stormwater. The developer either had the option of underground stormwater treatment or finding an alternative off -site area to construct a pond. The development site has five different low areas that will collect stormwater and allow for it to infiltrate. Four of these areas are located on the east side of the site and one near the northwest corner. However, stormwater treatment standards require a larger area to handle the remaining stormwater runoff. This is accomplished through a new stormwater pond near the 18 hole on Greenhaven Golf Course. This proposal has been agreed upon in the purchase and developers agreement between the City of Anoka and HealthPartners. Civil plans show a pipe extending from the northeast corner of the site over city property to the new stormwater pond near the 18 green. This pond is approximately 11,000 sf. and is designed to handle the additional runoff from the HealthPartners site. Because of the depth of the groundwater the pond should remain wet expect for extenuating circumstances. The pond will have a clay liner to assist in keeping it wet. The pond has the capability to be expanded to handle additional stormwater if the City should ever construct the new road north of the HealthPartners site and/or development occurs on the City of Anoka Parks and Recreation City of Anoka Required Proposed Regular Stalls 300 (One building) space /200 sf. of 300 Handicap Stalls 8 8 A2012 -7 Staff Report June 5, 2012 Page 13 of 16 West Main Street has 16,700 vehicles daily therefore the additional traffic created is a small percentage of the total vehicle traffic on major roadways adjacent to the site. Site circulation is accomplished through several two -way drive aisles throughout the site. There is a one -way drop off area in front of the main entrance. Parking The site is designed for 300 regular parking stalls and 8 handicap stalls. The following is what is required by Anoka City Code for a 60,000 sf. medical office /clinic. Source: Chapter 74, Article IX, Division 2, Section 74 -522 of Anoka City Code Grading, Drainage and Utility Plans These plans have been reviewed by the city's engineering, fire, and electric departments. Initial review comments were made by all of these departments and plans were amended to meet the original concerns. Stormwater plans will be reviewed by the Lower Rum River Watershed Management Organization (LRRWMO) at their June 21 meeting. Staff will require a condition of approval that the LRRWMO permit must be obtained prior to the any site grading and /or issuance of the building permit. A letter is included from Bob Obermeyer of Barr Engineering who is the consulting engineering for the LRRWMO. His letter to the board recommends approval of the watershed permit with several conditions. The developer is proposing a somewhat unique way to treat stormwater. The developer either had the option of underground stormwater treatment or finding an alternative off -site area to construct a pond. The development site has five different low areas that will collect stormwater and allow for it to infiltrate. Four of these areas are located on the east side of the site and one near the northwest corner. However, stormwater treatment standards require a larger area to handle the remaining stormwater runoff. This is accomplished through a new stormwater pond near the 18 hole on Greenhaven Golf Course. This proposal has been agreed upon in the purchase and developers agreement between the City of Anoka and HealthPartners. Civil plans show a pipe extending from the northeast corner of the site over city property to the new stormwater pond near the 18 green. This pond is approximately 11,000 sf. and is designed to handle the additional runoff from the HealthPartners site. Because of the depth of the groundwater the pond should remain wet expect for extenuating circumstances. The pond will have a clay liner to assist in keeping it wet. The pond has the capability to be expanded to handle additional stormwater if the City should ever construct the new road north of the HealthPartners site and/or development occurs on the City of Anoka Parks and Recreation City of Anoka