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<br />and/or leaving the site every 2~3 minutes, and equipment would be used to load <br />materials into the mixer and remove the final product (with back up warning noises). <br /> <br />3.4 In an effort to ascertain the noise impacts of this operation,cRam-s.ey_County.has <br />obtairu3d-sQund.lev~rmeas-uremEmts p(B::Coiicrete ft:!9y<;lirig operation at a gravel <br />pit in South Saint Paul. Based on the readings taken at this site, projected sound <br />levels were calculated for the Kent Street site. Four separate receptor sites were <br />utilized for these projections (497 Wagner Street, 512 Glenwood Avenue, Ramsey <br />County Women's Detention Center, and corner of Mackubin and Larpenteur). T:he._~ <br />~proJecteds9LJl1dleVels in .deci6el~.'(dBL!ange- frort}~5?:6<;fe..to_64.6dB~forJtje <br />: Co!1c~~e (~qy~lingJ1C~iviti~~. For comparison purposes, the measured sound levels <br />for the tub grinder (taken during the demonstration on 1/17/98) range from 60.1dB <br />to 72.4dB; and the measured weekday background sound levels (taken on 1/30/98 <br />and 214/98) range from 54.7dB to 68.4dB. Tt!~MPCAdaytimEf.resiqent@r~tandard7 <br />:'i$ 60bS.) Sound levels for other uses include c9~dB'~(L65d~'-:fo{~fiackground <br />J!"terstate traffic noisea 1 05dS to 11 OdB for a rock concert, and 11 OdS to 120dB for <br />a jet airplane. ' <br /> <br />Tub <br />Grinder <br /> <br />,Con~r~te <br />~~lJl!!r; <br /> <br />Background <br />Noise <br /> <br />MPCA Daytime <br />Standard <br /> <br />Decibels <br /> <br />60.1-72.4 !.?.7~6;a~C6} 54.7-68.4 <br /> <br />60 <br /> <br />4Jl STAFF COMMENT <br /> <br />4.1 Section 1012.09 of the City Code outlines the provisions for interim uses. JinJ <br />i!J~~rimus~i~hot.s~qlJired. to 'be consistent .with .tne land use- design~tiljnidentifi~dJ <br />tin the C6ni"f)fehehSive plan,.nor is it required to meet all of the zoning~standa.rds' <br />:established for the district iO Which it isJo'Cated7 A request for an interim use permit <br />is processed in the same manner as a request for a conditional use permit. In <br />reviewing a request for an interim use permit, the City may attach conditions and <br />establish a specific date or event that will terminate the use on the property. d.o; <br />(grC!nting an interim use ~peTJ11it, Jn$.. City 90u_nci.l-m~~f~lso~ ~etermi!1e- thaCth~ <br />(<:!P-Pf9val of the interim .use permit will not result -in 'adverse' impa~t.6n-the PYblic <br />t:1e~ltb and weifare~ thaf the operation. issafeJoJI1t;iPJ!bJic::; ~n~ that them9 areT'l97 <br />~~diti9nal co~~s _ ~ctded to the site that wQiJlg Q~t~r.~ p-efD1~~~mt ~s~- at_aja~r~i.me,7 <br /> <br />4.2 l]1elleneration ofdust and noise, trucK traffic and circu,lation, and. erosi~'!. a~e.rt}ajor J <br />,t!.bncern~ with this 20-acre ~ite. In an effort the address the City's concerns, <br />F_al"!1~~yCounty has agreed 'to plant up to 40C?niferous,treesC?n t~p'~f the ~e"!!J <br />,at theriorthern edge of the site, repair the erosion near the culverts that drain the <br />_~ _ _ ___ ~. - n . r . - , . - ,_J <br />site on tfle north si~~ of the 'proRerty, and limit general use hOlt~ .of tl}~ .~it~i fr9!f1 ) <br />(7:30a.m. to 7:00.p.m./ (w,fIt t,.&-t,,""", &-"""" 8 - r ",." /tiN -1tJ-,. <br /> <br />4.3 [Ili:eJjfbposedintedim use will g~rierafe adaitional-nQi.s~,'-ql,.ist, ~n~nO-lckl~ffip. For <br />this reason, permit conditions are needed to mitigate these impacts from creating <br />significant off-site impacts. @tQckp!ling~and: batch.~ixing of m~t~r~i3ls ~shou!d-be <br />U::lbsely i11Qhit()fed!i~r1cJ. ~Ef c!oS!ect tg the pu_bli9 to ~edu~ p_q~s!blf!jrijyty 9rvaf).dalism.; <br /> <br />PF#2985 - RCA (02/23/98) - Page 3 of 6 <br />