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LARKIN, HOFFMAN, DALY & LINDGREN, LTD. Mr. Steven R. Sarkozy Thomas M. Scott, Esq. May 28, 1999 Page 17 predicted 43 dBA level will be below the 50 dBA L50 nighttime standard (level exceeded 50% or 30 minutes of an hour) and the 55 dBA LlO standard (level exceeded 10% or six minutes of an hour). . Sound levels associated with mechanical equipment. Rooftop mechanical equipment for the proposed Cub Foods store will be screened by a four-foot parapet wall. The estimated worst case rooftop equipment noise level at the nearest home was slightly above the 50 dBA state nighttime L50 standard. Braslau recommends that Cub Foods' prototypical rooftop equipment on which the sound level assessment was based be modified to achieve 'strict compliance with state nighttime standards. Cub Foods concurs in this recommendation and proposes to utilize equipment with a substantially slower fan motor (850 RPM) than its prototypical equipment (1150 RPM) to achieve regulatory compliance. A conservative goal of an overall rooftop equipment sound level of 45 dBA or less (below the nighttime L50 standard) at the homes to the east will be used; and close-in noise barriers higher than the equipment will be added, if necessary to reduce sound levels at nearby residences. . Mardell Amundson Property Values Study Mardell Amundson Johnson & Leirness, Inc. conducted a study of the incremental effect, if any, on market value of single-family homes that neighbor Cub Foods stores or other similar 24-hour retailers as compared to those neighboring more conventional retail businesses. The Mardell Amundson property values study is attached to this letter as Exhibit I. It involved a survey of five asses~ors and a cpmparison of. average annual valuation change for. "affected" homes near Cub Foods stores to average annual valuation change for control group homes that lie in close proximity, but may be more directly influenced by general retail merchants that do not operate 24 hours a day. The Mardell Amundson property values study findings are: . No assessor reported any market evidence for value loss of residences neighboring a 24-hour discount grocery store as compared to those neighboring a general retail store. No assessor was of the opinion that there would be value loss resulting from this situation. . For each of the two market value comparisons, homes neighboring the Cub Foods stores were experiencing a greater value appreciation than their control group homes.