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2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Regular City Counal M eeting M onday, June 29, 2009 Excerpt from M eeting M inutes 11. PublicHe�arings Attachment B a. Public He�aring for Proposed Construction af a Nase Wall along H ighway 36 as a part af the Ric�e Street I nterchange Proj ect Publ i c Works D i rec;tor D uane Schwartz revi cwed summari zed the eval uati on and design process to-date, based on state and federal environmental rules, for Ramsey County' s reconstructi on of the i nterchange of H i ghway 36 and Ri ce Stre�, f rom prel i mi nary to f i nal desi gn. M r. Schwartz noted that a noi se anal ysi s has i ndi cated that hi ghway noi se i n the northwest quadrant of the i nterchange would eacceed state standards, cre�ating the need to verify that a majority of the property owners adj acent to the noi se wal I are supporti ve of i ts constructi on. M r. Schwartz i ntroduced agency representatives and preser�ters of the proposed noi se wal I, i ncl udi ng Ramsey County Proj ec;t M anager Ji m Tol aas; M arc Goess, with the M i nnesota Department of Transportati on (M nDOT):and Engi neeri ng Consul tants M ark Benson and Eri c Toml i nson with the f i rm S. E.H . 18 Presenters provi ded schemati cs of the proposed desi gn of H i ghway 36 and the 19 i ntersecti on at H i ghway 36 and Ri ce Stree�, el i m i nati ng one si gnal i zed 2 0 i ntersecti on on Ri ce, eveni ng al i gnment and proposi ng a noi se wal I on the north 21 si de of H i ghway 36. The presentati on i ncl uded rati onal e and cri teri a i n the noi se 2 2 anal ysi s; state and federal standards based on deci bel (dBA ) I evel s and 23 differentiations in those standards; and daytime and night-time dBA levels, with 24 abatement required when they eacceeded those standards, whenever technically 2 5 f e�asi bl e and r�asonabl e. Compari son I evel s f or typi cal dBA percepti ons were 26 provided; and impact assessrnents based on computer modeling before and after 2 7 proposed constructi on acti vi ti es; and mi ti gati on assessrnent i ndi cati ng barri er 28 effectiveness, location, and municipal support for such mitigation. 29 30 31 32 33 34 35 36 37 38 39 40 41 Presenters provi ded overal I observati ons f rom both si des of H i ghway 36 and noi se I evel s above state standards today, and predi cted i n the f uture; i nabi I i ty to install a noisewall on the south side based on M nDOT cost-effectiveness criteria; proposed changes i n ramp I ocati ons and ground I i nes that woul d f urther serve to reduce some noise levels; and recommendations, based on that analysis, of a 20 f oot noi se wal I al ong the north si de of H i ghway 36, ul ti matel y aff ecti ng 41 resi dents al ong that si de, w i th terrai n i mpacts provi di ng addi ti onal shi el di ng affects. The proposed I ocati on of the wal I woul d be f rom Western Avenue to i n front of Calibre Ridgetownhomes, with flexibility provided for the location of the wal I based on topography and noise reduction model i ng for ma�ci mum dBA reductions. Sampleconstructiontypesandvie�vswerepresented. 42 Presenters noted that local communities impacted were given an opportunity to 43 approve or deny proposed noi se wal I constructi on; and advi sed of thei r 44 avai I abi I i ty to respond to questi ons and/or concerns of the publ i c and City 45 Counci I . Page 1 of 5