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ARDEN HILLS CITY COUNCIL WORK SESSION — AUGUST 15, 2011 2 • Arden View Court / Drive townhomes • Lift station #8 service area (Tiller Lane, Ingerson Road, Hamline Avenue) • Indian Oaks pond • Amble Road / Nursery Hill Court rear yard area • Glenarden neighborhood between Forest and Skiles Public Works Director Maurer further explained that Public Works staff has been reviewing each of these areas. He stated he is now looking for Council direction regarding whether or not additional work should be done. He then reviewed the aerial map of each of these areas. Public Works Director Maurer stated that the area staff has spent the most time researching and reviewing is the Arden View Court and Arden View Drive townhome development. The staff's findings are as follows: • All storm drainage from both the north and south areas flows through the same storm sewer pipe and pond facilities. • It appears the City Council, in the mid 1970's, accepted the storm sewer along with the sanitary sewer and water main. He presented the Council minutes and back -up from June 16, 1975. • Staff asked Bolton and Menk to review the site and prepare a proposal for several items including: an analysis of the existing storm sewer system; creating a computer model of the system; collecting relative topographic information; model storm water options; analyzing grading overflow options; and preparing "ballpark" cost estimates. Public Works Director Maurer then reviewed Bolton & Menk's document dated August 8, 2011, titled "Proposal for Professional Engineering Services for the Townhouse Villages North and Townhouse Villages at Arden Hills Drainage Analysis." Included in this document is a breakdown of the proposed fees as listed below: • Task 1. Develop Options for Storm Water Improvements $ 3,500 • Task 2. Collect Topographic Data. of Critical Information $ 4,900 • Task 3. Analyze Existing Storm Water Conveyance System 4,000 • Task 4. Model Storm Water Improvement Design Options $ _ 4,000 TOTAL $16,900 Public Works Director Maurer stated his recommendation would be to do some initial scoping / analysis of the area to determine the least expensive options and then review those options with the Associations. He added that just because the City accepted the improvements in that area does not mean that the City cannot assess the benefited property owners for repairs on those improvements. He also recommended that the area be looked at as a whole since the north and south townhome areas are tied together by the same storm sewer system. Mayor Grant asked if the second pond on the north side has the ability to be drained a different way.