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REQUEST FOR ACTION
<br />To
<br />ITEM NUMBER
<br />L t d Cit-V ("ouncil
<br />N I av� c) r a ri
<br />6.3
<br />AGENDA SECTION
<br />MEETING DATE,
<br />PREPARED BY
<br />Work Session
<br />11V 91� 2012
<br />Rebecca I Jatig, Ei-n7-ironmental
<br />Administrator
<br />ITEM DE,SCRIIPTIION
<br />REVIEWED By
<br />Coal Tar-Rised 1,I)e'ell"'Int
<br />Cal Portner, ("A tvAdministnitor
<br />-
<br />REVIIEWE,D BY
<br />Peter Beck, City Attornev
<br />ACTION RE, UESTED
<br />Discuss tl,-ie em;,ironment,,11 effects of using coal tar-b,,1sed se,.1ler products.
<br />BACKGROUND/DISCUSSION
<br />Coal tar, I bypr(,-)d-L.ict of coal processing, is a sealant used to rene-w Ind protect the surfa-ce of parking lots
<br />and driveways. Though it is more resilientand resisfant to petroleun-i products like gasoline and oil th'.-ti-I
<br />other types of se,,'llants, it is also kno-wn to contaii-i high levels of chemicals called polycy clt*c aromatic
<br />.1 k_- w .1
<br />hvdrocarbons, (P- AHs). Some PAHs are kno-\NTi-i human c
<br />carcino Fens. Studies ha ve shown -\NThei-i oal tar-
<br />9
<br />based sealants are,,11pplied they can flake or breakdown and release PAHs tl,-iat can be deposited 'into
<br />I -ioff into nearbv -Nv, ters
<br />ad'acent land tracked into homes, aild carried b-v surface water rtu a These particles
<br />then ,,JccumuL,1te to p(-,)tentially harn-iful levels in sediments. This t*s,,i, growing c(-)ncern for local
<br />g(-wernments responsi 'ble for pond-a nd I 'sp(-)sI
<br />i-ig of sediments dredged from them
<br />,"Is the sediments rn,.1y require disposal aks, haz,,11rd(-,)us w.1ste.
<br />Disposal costs of PAH c(-)nt,,imit-i,,ited�ediments depend on the concentration of PAI-Is- in the sediment.
<br />t t I t '\f-Lin*c*p, I Solid W'aste (-MSW�
<br />Typically, c(- ntaminated sediment is d*,,--,posed of as a, solid -\NTas to at a, t I a I
<br />a n s ystem. Disposal costs 'nclude testing and laboratory
<br />landfill that has a liner and a leach, to coIlecti(,-,)
<br />sts tt-ic a-\,'ation transportation and
<br />analysis of the sediment to chara(teri/.e the waste. (-')tl,-ter c(-,) I-Lide e---,,-c,
<br />tipping fees. The '\IP(-'4A estimates that for metro cot-ni-n-Linities, disposal costs citn be,,,is much as
<br />$2,501000 per pond when sedit-rent removal projects inchide significant PAH c(--)ntamtnation and require
<br />disposal at a haz,4Ardous waste landfill. For ponds with to iv-,)n-detect P contaminittion, the typtca''I
<br />costs range from $715,000 to $125000 per pond and the sedit-nents need to be disposed (:)fittili-I -L\IS\\"
<br />factlitv.
<br />.1
<br />t t t t As of
<br />Alternatives to coal to based sealer formulations ,"ire asphalt-based sealant�,--, that have far lower le-\7
<br />PAI-Is. (Attachment l: AIPCA Coal Tar-based Sealco,.-tt Environmental (",oncerns). Asphalt-based sealers
<br />-ement stores -w
<br />*lv,, va*L ble. The --\IP('A has compiled a list of home impro-\7 Th'ch have stopped
<br />are re lc tl M a L
<br />selling coal to based sealant, nd -which carry, sphalt 1,-)ased sealant instead. This list includes stores like
<br />selling t" seal. 11 11
<br />me Dep t, Low e's, and iMen, rds.
<br />ACE H,,"trdware, Ho 11
<br />In -'Nlay 2009 the Ah -a Legy-isl, ttwe restricted state,,igencies. from purchasing co, I tar sealants (2009
<br />innesot 11 1 t $4 t t t
<br />Session La-\vs, (].hapter 172, and HF1 23 1, sections 4, 26, and 28). The 2009 lelg-islation restricts -Alinnesot"i
<br />sLate ages- c'es from p-Lircha,s'i-ig und'luted coal tar sealant effective July 1, 2010. In add*t*on, 2( --L\I*
<br />I I I I t innes0ta
<br />P 0 W E R 1 0 0 Y
<br />Cc I Tal: Sealaiit.docx
<br />(--olilici R(--A`,,,Agre1id.:i P.:icket`,,, 2(A2,\,6.,-) A&
<br />NA"fURE
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