### F ed E x

N ov ember 6. 2009 

### Ms . S u s an L ewis D ocument P rocess i ng D esk O ffice o f P esti ci de Pr ograms - 750BP 

### U.S. Envir onmental Protection Agency 

### 2 777 S o uth Cryst al D ri ve On e P otomac Yar d , R oom 5 A9 00 

### Arlin gt on , V A 22202 D ea r M s . L e wi s : FTN 86757596 5933 

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# - Re !J West Comp an y, 

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Subject: S cime trics L td . C orporation 

### E PA Co mpany Numb e r : 7 2500 Revised gO -Day R esponse t o " R isk Mi t igat io n D e cis i on f o r T en R od e ntic i d es" O n beha l f of 

### Scimetrics Ltd. Corp . • Re gWest Com pany , LL C i s s ubmit tinq t he a tta c hed re vised f orms in respon s e to th e E P A ' s " R isk Mit igat ion D ecis io n f or T en R odenticides " date d M ay 28. 2008 a nd in response to 

### the EP A's letter dat ed J une 1 8 , 2008 . Reg West will act as s ale agent i n th is en dea vo r . 

### Atta ch ed a re th e foll owing : 1 . Re vised gO -Day R espon s e F orm f or th e May 2008 R odent i cide R is k Mit igat ion D eci si on ( Dip h acino n e) 2 . Re vised gO -Day R espon s e F orm f or th e M ay 2 008 Rodent i cide R isk M it igati on D e cis i on ( W arf a r i n ) To s ummarize th e rev i sions : D iphacinone-containing pr oducts f orm: We i ntend t o ca ncel th e 72 500 -10 registration w hen we file th e 20 10 M aintenance fee res pon s e' 

### We h ave add ed 72 500- 1 8 Warfa r i n-co ntain ing prod u ct s f orm : 

### We have add ed 72500- 14 and 725 00-15 ·S cime tri cs Ltd . C orporation will w aive the typical 1 80-day co mme nt p eriod a nd op t f or the s horter 3D- day com ment p eriod p er FI FRA Se ct i on 6, if ne cessary , be aring in m i n d th at th e vo l untarily ca nce lla t i on o f EPA R eg . N o . 7 2500- 1 0 w ill become e ffe ctive p er th e M aintenance F ee ca nce lla tion po flcy , Pl ease co nta c t me at (9 70) 353 -06 11 o r kim@regwest.co m i f yo u have any quest ions or req u i re a ddit ional informat ion . 

### Regards , RegWest Company , LLC Kim D av i s, C C . A PC , M anager Co nsultanVAgent Atta c hments 

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# • 85 6 R0Ck y R oad**L.I. '--T-** **4L -/L** **-J, l e** **.c 'O**  80 631 -93 75 

### o- asa -ce n 9 70 -3J? ·C ( 13 Fa x K i m@r<!gv. ..l .;t:. co mRevised 90-Day Respon se Form for the M av 2008 R ode n ti cide Risk Mit igat ion Decis ion Co mp any Name : S cim etric s ltd . C orporatio n Active Ingredient : D ipna cm o re ( P C C ode 06770 1) Company Number : 7250 0

In col umn I , p lease lis t t he EPA Reg is tration Number for a ll products reg istered t o your comp a ny that cont a in the active i ngredien t identified a bove . P lea s e ma rk one bo x De( 

### row (columns 2 -81 indicatina vour comn a n v ' s intended method f or com nM na with t he M e lli 200 8 roa e raci a e risk mitioa f ion decision . Plea s e a l so comD J ete items 9-15 . 

### 1 

### 8 Intended Method for Complying w ith the M ay 2008 Rod enticide Risk M itigat ion Deci s ion 

### 2 3 

### 4 5 6 7 I do not i nten d t

o voluntarily bOng this 2 . Product isa 7 . I wish to product into tech nica l g rade Of 3 . Product is labeled 6 . I will submit an voluntari ly cancel compliance with the manufacturing use solely for outdoor , application on 

### or this product under requirements of the prod uct that below-g round 4 . Product is labeled 5, Product isa before 

### 12104/2009 FIFRA 6(f) (e ffective May 

### 2008 risk curren tly com plies con trol of m oles and so lel y for ou tdoor t racking pow der t o amend this onor be fore mit igat i on deci sion. I w

ith t he po cket g oph ers, and fi eld uses, and p r odu ct , and prod uct to compl y 

### 06/041201 1), a nd a un d erstan d that req uirements se t th erefore the M ay there fore th e M ay therefore the Ma y w i th the letter re ques ting EP A may pursue EP A Prod uct fort h i n the May 

### 2008 ri sk mitiga tion 

### 2008 risk mi tigatio n 

### 2008 risk m itiga tion requireme nts of the 

### cencenatoo is additio nal regula tory Registra tion 

### 2008 risk mitigation deci sion does not decision does not decision does not May 

### 2008 risk included with this 

### acton. induding Number decisio n apply.**ap~y ap~y**  mitigation decision . 9O-Dav response . cancellation . 

## 72500-9 

## X 72500-10 

## X 72500 -11 

## X 72500 -12 

## X 72500-1 6 

## X 72500-18 

## X 9 . Certificatio n: r ce rtify t h at t he s tatem e nts m ade o n t h i s form an d a ll atta chments are t rue , accu rate an d comp lete . 10 . Sj!ln .. tur"! ('f Com;>any's Aut hor ized Representative : 1 1 . Pho ne Number : 970 - 353-06 11 

# 9ks

- - 1 1 / 0 6/ 2009 1 2 . Email : kim @regwest.com D

ate 1: . Frtnted Name of A u :hori .. ed Representative : Kim Dav is . CC . A PC . Manager 1 4 . Ti t le : Co nsultant/ Agent for Sc im etrics lt d . Corporation 15 . Nameof Co mpany: RegWest Compa ny, l LC for S ci metrics ltd . Corpora tion 

### Plea se reproduce t hIS 

### page if add itKHIal l ,ne s are needed for your compa ny 

### s re sponse .Revised gO-Da y Res po nse Form for the M ay 2008 R odenticide Risk Mitigat ion Decision C ompa n y Name : Scim etrics Lt d . C orporat ion Active Ingredient : Warfa rin ( PC Code 0860 02) Company Number : 72500

In column 1 . p l ease Ji s t t he E PA Reg istr at

ion N umber for a ll pr od ucts regisJ ered t o 

### your compa ny that con ta in the a ct i ve i ngredien t ident ifi ed a bove . P l ease ma rk 

### one bo x ner r ow (col um n s 2-8) indicatinn lIOlJr com nanv 's in le nded method f or com plyinq wi th t h8 M ay 200 8 rodenticide risk mitiqation decision . Pl ease also compl ete i te ms 9- 15 . 

### 1 8 I ntended Method for Complying with the May 2008 Rodentici de Risk Mitigation Decision 

### 2 3 

### 4 5 8 

### 7 I do not illtend to voluntarily bring this 2. Product is a 7 . I wis h to product in l o technical grade or 3. Product is labeled 6. I will submit an voluntarily cancel compliance with the manufac turing use solel y for out door , application onor this product unde r requirements of the p

rod uctthat be l ow-grou nd 4 . Prod uct i s labe l ed 5. P rod uct is a before 1 2/04/2009 FIFRA 6( f) (effective May 2008 risk cur ren tly com pl ies control of moles an d sole lyfor outdoo r tracking po w der t o amen d this on or be fore mi tigation dec isio n . I w

ith the pock et goph ers , a nd fiel d us es, a nd pr odu ct, an d pr oduct to compl y 0 6/04/2011), and a un derstan d that re

qui remen ts se t ther ef

ore the Ma y th erefore the May the r e

fore the M ay w ith the lett er r eq

ue s ting EP A m ay pursue E PA P roduct f orth i n th e 

### Ma y 2 008ris k m itiga tion 2008 ris k m iti

gati on 2008 ris k mi tigatio n req uiremen ts o f the cance llation is additional regula tory R

egistra tion 2008 ri sk mitigatio n decision does not d eci sion d oes no t decision does not 

### May 2008 risk induded w ith th is action . induding Nu mbe r d eci s i on apply. 

### a DDlv aDW mitigation deci sion. 

### 9O- Da v response . cancellation . 

## 72500 -2 X 

## 72500 -6 X 

## 72500- 7 X 

## 72 500-1 3 X 

## 72500-14 X 

## 72500-15 X 9 . Certification: I certify t hat the sta tements made on t h i s f orm and all atta chme nt s a re true , accurate a nd co mp lete . 10 . Signature o f Comoany's Auth orized Representat ive : 11 . Phone Nu mbe r: 970 -3 53-0611 

# <S K 1 1 /06 /2009 12 . E mail: kim@reg wesl.com 

### S

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atu r e**D.~** 1 ; - . "'r lntf:l t t eme of Au ·l.orb · ed Represen tative : K i m Davi s . CC , APC , Manage r 14. Tit le : Co nsultant/Agen t 15 . N ame of Compan y: RegWest Company, L LC for Sci metri cs ltd . Co rporation Please reproduce thIS 

### page if addit IOnal N nes are needed 

### for your compa ny's response .