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2013-23 BILL NO. 2013-23 AMENDMENT TO RICHFIELD CITY CODE SUBSECTION 541.19 RELATED TO NOISE ATTENUATION THE CITY OF RICHFIELD DOES ORDAIN: Section 1 Subsection 541.19, of the Richfield City Code is amended to read as follows: 541.19. Noise Attenuation. Subdivision 1. It is in the best interest of the City and of current and future residents that the integrity of all residential structures which have received a 5dB or other sound insulation package from the Metropolitan Airports Commission be maintained subject to the following: Subd. 2. 2007 63+ or greater DNL Contour Definition. For the purpose of determining noise attenuation for new residential construction on a property, this area is defined as the area in which noise is greater than within the 2007 60-62 DNL Contour. Subd. 23. Noise Attenuation Required. Any new - - - ••• - • - • - residential construction on property located within the 6Q 2007 63+ or greater DNL Contours, or any infill construction or rebuilding of residential structures after tearing down the original structure which takes place within blocks or between structures that have received noise attenuation pursuant to the Consent Decree or pursuant to previous noise mitigation programs of the Metropolitan Airports Commission, shall utilize building materials with a Sound Transmission Class (STC) rating of at least 40 and shall include installation of central air conditioning and mechanical ventilation throughout the habitable areas of the structure. Subd. 34. Requirements within the 2007 60-62 Contours. All new residential construction of new single family homes located in blocks or between structures that have received noise attenuation pursuant to the Consent Decree that are in the 60 to 62 DNL contours,. as defined in the Consent Decree, must include installation of central air conditioning and mechanical ventilation throughout the habitable portion of the structure. • - - '' - . _ . . •- II =1 - - • - - .•.e . - - -- - - - - -- -- - - - -- -- - -- L i _ *et. . -- - • -- - - ... _ • . _ habitable portions of the structure. Subd. 5. Noise Attenuation Recommended but not required. For construction of a habitable addition to a dwelling unit that expands the habitable area of a dwelling unit which had previously received 5dB sound insulation package from the Metropolitan Airports Commission pursuant to the Consent Decree or pursuant to previous noise mitigation program of the Metropolitan Airports Commission, the property owner is encouraged to consider (i) the inclusion of central air conditioning and mechanical ventilation for the expanded area and (ii) utilization of materials with a Sound Transmission Class (STC) rating of at least 40 in order to achieve similar noise attenuation in the expansion of the structure as existed in the principal structure prior to the expansion. Subd. 6. Noise Attenuation Map. Final determination of noise requirements for this ordinance will be based on the map titled, "Noise Attenuation Areas in Richfield for New Residential Construction". A copy of the map will be on file in the Community Development Department of the City. Passed by the City Council of the City of Richfield, Minnesota this 26th day of November, 2013. 15 ,4PWAL � — I ,,, f-./ Debbie Goettel, Mayor ATTEST: qi\d0 —9d-UK\ Nancy Gibb- ity Clerk AFFIDAVIT OF PUBLICATION City t)f Richfield STATE OF MINNESOTA ) , (official Publication) COUNTY OF HENNEPIN SS SUMMARY N .2013-23 BILL N0.2013-23 ORDINANCE 541.19 AMEND- Charlene Vold being duly sworn on an oath, ING THE RICHFIELD CITY CODE states or affirms that they are the Authorized TOAMENDNOISE SFOR A- Y� TION REQUIREMENTS FOR NEW Agent of the newspaper(s) known as: RESIDENTIAL CONSTRUCTION IN THE 200760-62 AND 63 OR GREATER DNL CONTOURS SC Richfield This summary of the ordinance is published pursuant to Section 3.12 of the Richfield City Charter. and has full knowledge of the facts stated This ordinance makes the follow- below: ing changes to the City Code: The (A)The newspaper has complied with all of requirements non for new residentiafar l construction ise atteuation re- the requirements constituting qualifica- main the same as originally adopted tion as a qualified newspaper as provided In ende by the city council. The amended language is now more user- by Minn. Stat. §331A.02, §331A.07, and friendly. other applicable laws as amended. Copies of the ordinance are avail- (B)This Public Notice was printed and pub- able for public inspection in the City Clerk's office during normal business lisped in said newspaper(s) for I succes- hours or upon request by calling the sive issues; the first insertion being on Department of Community Develop- 12/05/2013 and the last insertion being on ment at(612)861-9760. 12/05/2013. /5/Nancy Gibbs,City Clerk 12/05/13,Bill No.2013-13 By: CIAJA,911Alt-k in_ Authorized Agent Subscribed and sworn to or affirmed before me on 12/05/2013. Notary Public ' ` l �'1/1,i i3' Vii RE24 S IP, f � L Noittut, 1)lC 111u i00iii.;r •.,:I lmis .n;Expire._ t„1 Rate Information: (1)Lowest classified rate paid by commercial users for comparable space: $34.45 per column inch Ad ID 64706 AFFIDAVIT OF PUBLICATION City of Richfield Final determination of noise require- ments for this ordinance will be based STATE OF MINNESOTA (Official Publication) on the map titled."Noise Attenuation Areas in Richfield for New Residential COUNTY OF HENNEPIN SS BILL NO.2013-23 Construction".A copy of the ma°will AMENDMENT TO RICHFIELD De on file in the Community Develop- CITY CODE SUBSECTION 541.19 ment Department of the City. RELATED TO NOISE Charlene Vold being duly sworn on an oath, ATTENUATION Passed by the City Council of the states or affirms that they are the Authorized THE CITY OF RICHFIELD DOES OR- City of RiNhfielm Minnesota this Agent of the newspaper(s)known as: DAIN: 26th day of November,2013. Section 1 Subsection 541.19,of the Debbie Goettel,Mayor SC Richfield Richfield City Code is amended to ATTEST: read as follows: Nancy Gibbs,City Clerk 541.19.Noise Attenuation, and has full knowledge of the facts stated Subdivision 1.It is in the best inter- 12/05/13,Amendment to City Code, eat of the City and of current and D2 below: future residents that the integrity of (A)The newspaper has complied with all of all residential structures which have the requirements constituting qualifica- received a 5dB or;other sound insu- lation package from the Metropolitan tion as a qualified newspaper as provided Airports Commission be maintained by Minn. Stat. §§331 A.02, §331A.07, and subject to the following: other applicable laws as amended. Subd. 2. 2007 63+ or greater DNL This Public Notice was printed pub- Contour Definition. For the purpose (13) P N 1 inted and P of determining noise attenuation for fished in said newspaper(s) for 1 succes- new residential construction on a sive issues; the first insertion being property,this area is defined as the g on area in which noise is greater than 12/05/2013 and the last insertion being on within the 2007 60-62 DNL Contour. 12/05/2013. Subd. Q . Noise Attenuation Re- quired. Any new single-family--er- multifamily residential construction on property located within the 60*r 2007 63+ or greater DNL Contours, or any infill construction or rebuilding By: CAkel_itct i 4 {� of residential structures after tearing v down the original structure which takes place within blocks or between Authorized Agent structures that have received noise attenuation pursuant to the Consent Decree or pursuant to previous noise Subscribed and sworn to or affirmed before mitigation programs of the Metro- me on 12/05/2013. politan Airports Commission, shall utilize building materials with a Sound Transmission Class (STC) rating of at least 40 and shall include instal- // �� q lation of central air conditioning and y)/�/���J,y i 7 ��� mechanical ventilation throughout the �(,(f 1;fU�l. d/` �G L —� habitable areas of the structre. Notary Public Subd. 34. Requirements within the 2007 60-62 Contours. All new resi- dential construction of—new—single- family-homes located in blocks or be- d tween structures that have received •r-fe1L ;i iE iTr''„1 r noise attenuation pursuant to the L ' Consent Decree that are in the 60 to • I•,1,._il,t 62 DNL contours,as defined in the Consent Decree,must include instal- ., x lip: ' 1,2015 lation of central air conditioning and mechanical ventilation throughout the habitable portion of the structure. 1 lomcs in the 2007 GO G4 Contour.All Consent Dccrce or which are be- noisc attenuation pursuant to the Consent Decree or pursuant to previ Metropolitan Airports•Commission must include installat;on of central air of the structure. Subd.5. Noise Attenuation Recom- mended but not required. For con- struction of a habitable addition to a dwelling unit that expands the habit- able area of a dwelling unit which had previously received 5dB sound insu- lation package from the Metropolitan Airports Commission pursuant to the Consent Decree or pursuant to previ- ous noise mitigation program of the Rate Information: Metropolitan Airports Commission, (1)Lowest classified rate paid by commercial users the property owner is encouraged to consider(i)the inclusion of central air for comparable space: conditioning and mechanical venti- $34.45 per column inch lation for the expanded area and (ii) utilization of materials with a Sound Transmission Class (STC) rating of - at least 40 in order to achieve similar noise attenuation in the expansion of the structure as existed in the princi- pal structure prior to the expansion. Ad ID 63704 Subd. 6. Noise Attenuation Map.