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# OAR Box 1384 Prepped by Charmelle Mathews



### Document

Number: 

# $2&i) ll-E-16 2
Docket Number: 

# A-94-5 2

Printed 7/2/2008 8:42:10 AM

Sheet 202 of 264P. 2

06/25/9 8 13:4 4 TE L 303287257 6 09/25/9 8 10:0 0 ©1919941023 4

From : Date : Contact : Company : MES A FIBERGLAS S PE S RT P N

C L£|U 1 ®002/00 2 

### A 9 4 5 2
Contac tRepor t Rober tJemison , Pacifi c Environmenta l Services , Inc . (PES ) Jun e 24,199 8 Mr . Rober tR. Yoh o Mes a Fiberglass , Inc . ' Telephon e Number : (303 ) 287-257 6 Fa x Number : (303)287-138 5
Contac tSummary : Mr . Rober

tYoh o wa s contacted to updat e informatio

n provide d i n di e 199 3 EP A Reinforce d Plastic/Composite s Screenin g Surve y submitted b y Mes a Fiberglass , Inc . fo r thei r facility locate d i n Commerc e City , Colorado . I n respons e to m y question s Mr. Yoh o indicate d th e following : Th e facilit

y use s atomize d spra

y lay-up to appl

y a polyeste r resi n i n th e fabricatio n o f certain corrosion-resistantproducts . Th e facilit y n o longe r uses ! flo w chopper s t o appl y thi s polyeste r resi n du e t o variou s processin g problem s tha toccurre d durin g production . Th e polyeste r resi n applie d usin g atomize d spra

y lay-u p contain s approximatel y 45 % HA P b y weigh t(45 % styTene ) and doe s no tcontai n a vapor suppressantThe compan y adds antimon

y trioxid e t o th e resi n whe n additional fire-retardanc

y i s required i n di e fina

l produc tN o additiona

l HA P i s adde d t o th e polyeste r resi n durin g o r prio r t o th e fabrication proces s with th e exceptio n o f smal l amount

s o f HA P tha tma y (o r may not ) b e presenti n initiators , promoter s and/or catalysts added t o th e resin . Th e faciUt

y use s di e filamen

twindin g proces s t o appl

y tw o separat

e viny l este r resin s i n th e fabricatio n o f

certai n corrosio n resistan

tproducts - The tw o viny l este r resin s use d b y th e facilit y ar e Ashland' s Hetro n 92 2 L2 5 and Hetron 99 2 FR . Th e Hetron 92 2 L2 5 contain s 47.0 % HA P (47.0 % styrene ) an d accounts fo

r approximately 80 % o f

th e resi n use d wit h th e filamen twindin g process . Th e Hetro n 99 2 F Rcontain s 39.0 % HA P (39.0 % styrene ) an d accounts fo r approximatel y 20 % o f th e resi n use d wid i th e filamentwindin g process . Th e company add s antimon y trioxid e t o th e Hetron 99 2 FRresi n whe n additiona l fire-retardancy i s require d i n th e final produc tNeithe r o f th e viny l este r resin s use d i n the filamen twindin g fabrication proces s contai n a vapo r suppressan tN o additiona l HA P i s added to eithe r viny l ester resi n durin g o r prio r t o th e fabricatio n proces s wit h th e exceptio n o f

smal l amount

s o f HA P tha tma y (o r ma y not ) b e presen

ti n initiators , promoters and/o r catalyst s adde d t o th e resins .

INFORMATIO N I S ACCURAT E 

# Q/MfJ/06/25/9 8 13:4 4 TE L 303287257 6 MES A fIbKKULAS S 4)0 2 P. 3

Contac tRepor t Mr . Rober

tR . Yoh o Jun e 24,199 8 Pag e Tw o Th e facilit y use s atomize d spra y lay-up t o apply tw o pigmente d polyeste r ge l coat s i n th e fabricatio n o f

certain products . Th e neo n blu e polyeste r ge l coa tuse d b y th e faciUt y contain s 30.0 % t o 40.0 % HA P b y weigh t(30.0 % t o 40.0 % styrene , 0.0 % methy l methacrylate ) an d account s fo r approximatel y 80 % o f

th e facility' s total ge l coatusage' . Th e dresde n blu e polyeste r ge l coa tuse d b y facilit y contain s 37.1 % HA P b y weigh t(32.7 % styrene , 4.4 % methy l metoacrylate ) an d accounts fo r approximatel y 20 % o f th e facility' s tota

l ge l coa tusage . N o additional HA P i s adde d t o eithe r pigmente d ge l coa tdurin g o r prio r t o th e fabrication proces s wit h th e exceptio n o f smal l amounts o f HA P tha tmay (o r may not ) b e presenti n initiators , promoters and/o r catalyst s adde d t o th e ge l coats . Al l resi n mixin g a tth e facilit

y i s conducte

d i n open 5 5 gallo n drum s (i.e . th e to p o f

th e dru m ha s bee n remove d prio r t o mixing) . Th e facilit

y use s aceton e for th e majorit y o f its equipmen

tcleanin g operation s (fo r equipment associate d with th e manufactur e o f reinforced plastics) . Th e facility ha s on e "soa k tank " whic h contain s methylen e chlorid e tha ti s use d t o clea n equipmen ttha ti s coate d with o r i n contac twit h resi n tha tha s cure d o r "se

tup. " Th e "soa

k tank " i s covere d a tal l time s excep twhe n opene d t o ad d o r remov e equipment .

INFORMATIO N I S ACCURAT E



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