1993 05 25 Agenda
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FILE
AGENDA
CHANHASSEN PARK AND RECREATIONCOMMISSION
TUESDAY, MAY 25, 1993, 6:00 P.M.
A. 6:00 - 8:00 p.m. SITE INSPECTIONS:
1. Property West of Lake Minnewashta
2. Song Property, Galpin Boulevard
3. Tandem Properties/Pemtom/Opus Parcels
4. Rogers/Dolejsi Parcel, Lyman Boulevard
5. Great Plains Golf Estates
We will be car-pooling from the lower level parking lot at City Hall Parking Lot for
transportation to these sites. The Commission will be making recommendations on all of these
sites in regard to Park and Trail issues within the next 1~ months. The Commissioners'
recommendations will have significant impacts on the future of recreation in Chanhassen. These
tours will prove invaluable when making these decisions. The attached map identifies the sites
we will be visiting.
CALL TO ORDER
8:00 p.m.
1. Approval of April 27, 1993, Park and Recreation Commission Minutes. [Note: Nann has
been serving jury duty and was unable to complete the minutes.]
VISITORS PRESENT A nONS
2a. Commission procedures allow for presentations from the audience at
this time. If a motion is required, the item will be forwarded to the next available
agenda to allow for publication and review of items prior to consideration.
2b. Bob Zydowsky will be present to discuss City Ordinances regarding pets.
3. Land Development Proposal, Revised Preliminary Plat, Great Plains Golf
Estates.
Donald Halla, Owner and Developer
10095 Great Plains Boulevard
Chaska, MN 55318
4.
Request for Soccer Kick Wall, City Center Park, Chan/Chaska Soccer Club.
5.
Consider Park and Recreation Survey
6.
Administrative Presentations:
a. Rogers/Dolejsi/Bandimere Park Issue
b. Redevelopment of Downtown/Community Center
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CITY OF
CHANHASSEN
A.
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690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
MEMORANDUM
TO:
Park and Recreation Commission
FROM:
Todd Hoffman, Park and Recreation Director
DATE:
May 19, 1993
SUBJ:
Site Inspections
1. Property West of Lake Minnewashta (s
2.
Song Property: Terry Forbord of Lund ..rothers Construction and his associates have
met with staff on at least two occasi in l'gard to the proposed development of the
Song property. Issues of concern to't. co 'ssion may include, but are not limited to,
the proposal of a second private p"k in th area, the park deficient nature of this
quadrant of the city, the desire to r . 'n portion f the site in an undisturbed manner, the
assurance that the character of th etlands will t be altered, tree preservation, and the
inclusion of trail easements an r trail constru .on as a part of the development. A
preliminary draft of the conceOevelopment for .,. property is attached for your review.
Mr. Forbord will be joini s in our site visit.
3. The commission h iewed the preliminary app ~(;ations for the Opus and Tandem
property pa;~.~l~ '. .... emtom site is currently being'~scussed between representatives
of Pemtom<andstaff~jjI:~jy.o,"~~j~;;fI.om.m~ii~9b~ paper (a school assignment), I
have hi . .~~;~~g{lgj~;'~j~~~
4. Upon informing Lundgren Bro of the
commission's continuing ml~~.i~~,'we curred that it would be
appropriate for Lundgren Brothers to a . concept plan based on the presumption
that a trade might occur. The con bmitted to the city is a starting point for
discussion, and in regard to land use, es a great deal of sense. However, this first
draft does not take into consideration the city's desire for additional lands; in fact, it is
smaller than the current park site. You will also fmd attached a proposed master plan
concept for the potential addition of a 5.3-acre parcel to the existing Bandimere Park site.
5.
Great Plains Golf Estates (see Item No.3).
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~.1 PRINTED ON RECYCLED PAPER
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C ITV OF
CHANHASSEN
A -}
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690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900. FAX (612) 937-5739
May 12, 1993
Mr. Jim Walston
Campbell, Knutson, Scott and Fuchs
Suite 317, Eagandale Office Center
1380 Corporate Center Curve
Eagan, MN 55121
Dear Jim:
As requested of Roger Knutson, I would like Campbell, Knutson, Scott and Fuchs to administer
the necessary steps to secure the probable purchase of a parcel of property west of Lake
Minnewashta. The city has clearly identified the goal of acquiring a parcel of land of at least
10 acres in size in this region of the city for park purposes. The Park and Recreation
Commission has established a fund reserve currently totalling $150,000 to assist in this purchase.
The subject parcel is the most northerly of four fairly uniform, rectangular properties located in
the south one-half of Section 6 in Chanhassen. As previously discussed, the property is currently
owned by Ms. JoAnn Hallgren, widow of Howard Hallgren, 6860 Minnewashta Parkway,
Excelsior, MN 55331. The property identification number is R25.0060300.
I have discussed the possible purchase of the property with Ms. Hallgren on an intermittent basis
over the past year and one-half. In consultation with Don Ashworth, the city facilitated a
meeting between Ms. Hallgren and Greg Anderson of Deloitte and Touche (phone: 344-0268)
to discuss tax implications associated with this sale. Ms. Hallgren is interested in retaining a
portion of the property as a life estate for an undetermined period of time. It is our position that
by entering into a life estate arrangement, the city can limit our fmancial investment to some
degree due to mutual benefits. As discussed with Roger, the appraisal of the property need not
be of the type utilized in condemnation proceedings. Ms. Hallgren has stated that she would
rather see her property as a park in lieu of a housing development. The likely acquisition and
development of the three remaining parcels to the south of the Hallgren property is necessitating
that we move swiftly in this regard.
ft
~., PRINTED ON RECYCLED PAPER
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CAtv1PBELL, KNUTSON, SCOTT & FUCHS, EA.
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Th, >lll:l.' J. C.1J1\I,h:ll
Rdg.:r !\:. Knurslln
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James R. \Vabrnn
Elli, ltt R. Kner'Lh
t>.1ichael A. Bnlhack
Renal' D. Sreiner
(612) 452-500C
Fax (612) 452-5550
May 14, 1993
R!""^~I~Ir."~
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Mr. Harvey Swenson
Swenson & Associates
6100 Green Valley Drive
Bloomington, MN 55438
'I: ~.y 1 7 1993
dl-',
CITY UF CHANHASSEf\!
Re: City of Chanhassen/Possible Acquisition
of Hallgren Property
Our File No. 12668/306
Dear Mr. Swenson:
.
Enclosed please find a photocopy of correspondence I
recently received from Todd Hoffman, the Parks and Recreation
Director for the City of Chanhassen. Please note that Mr.
Hoffman has requested this firm to proceed with obtaining an
appraisal for the property under consideration.
Once you have had a chance to review the materials enclosed
herein please contact me so we can discuss you fees and the time
line for the completion of your work.
Your prompt response is appreciated.
Very truly yours,
JRW:ses
Enclosure
cc: Todd Hoffman
Don Ashworth
Todd Gerhardt
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~l1ite 317 . Eal!andale Office Center · 1380 Corporate Center CUf\'e · Eagan. :-v1~ 55121
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LOCAL GOVERNMENT ADMINISTRATION
HAMLINE UNIVERSITY
SPRING 1993
JIM PROSSER, JIM BRIMEYER
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APRIL 22 WRITING ASSIGNMENT
DEVELOPMENT/REDEVELOPMENT
PLANNING EXERCISE
TODD HOFFMAN
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officials. The excitement of this exercise is derived from the fact that the events being described
are actually taking place. Many planning processes have begun for this property, but as can be
seen from the aerial photo, very little has been constructed to date. However. it is a given that
many preconceived notions of how each individual "player" sees their part of the site being
developed and utilized have been thought out. Tom Martinson stated. "The most coveted ability
of all is the ability to propose." Therefore. I accept the challenge to propose the creation of a
major natural resource-based recreation area on this site.
Site Characteristics
The wetland is classified ag/urban. and is isolated from other water-based resources in the
city. There is a limited amount of open water present. representing just 5% of the total area
encompassed. The dominant plant species include: reed canary grass. cattail. jewel weed. sedge.
and duck weed. Box elder trees are abundant, and some American elms are present. As
mentioned. the current adjoining land uses are of an undeveloped nature. and include 25%
agricultural. 60% wooded. and 10% vacant field. Currently. less than 5% of the wetland is
bordered by residential development. Sources of water feeding the wetland include: natural.
storm water. and surface drainage. Sedimentation and siltation has not occurred to date. but
flooded dead and dying trees are present. Wildlife is abundant. and includes deer. muskrat.
beaver. water fowl. pheasant. mink. fox. frogs and other amphibians. and a multitude of insect
varieties. Hawks and owls also inhabit the area. fmding refuge in the dense. wooded wetland and
adjoining forested areas. Under the current proposal to incorporate nearly 100 acres into a park
reserve. much of this wildlife will adapt to the impending surrounding development.
2
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along Galpin Boulevard to facilitate future construction of the trail segment along the boulevard
as identified in the Comprehensive Plan.
All land acquisitions alluded to in these steps shall require transfer of ownership by fee
title through an unrestricted warranty deed.
Conclusion
Planning for the acquisition and future use of the lands discussed herein is only necessary
if there is a desire to shape the future development of the city. It is only necessary if 20 years
from now we would like the people walking the trail to say, "Am I glad this area was preserved."
Without intervention, the property abutting the wetland will be developed, leaving little
opportunity for such a future "feeling" to be discovered. I prefer not to be a custodian of the
present. I enjoy being part of creating opportunities for people to enjoy now and into the future.
I am fortunate to work in an environment that nurtures and promotes this type of thinking, and
in fact, has incorporated it into their culture. Therefore, I am confident as I move forward in
promoting my vision for this site, even though it will be shaped and altered by the input of
others, persistence and a well-documented plan will prevail.
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PRC DATE: May 25, 1993 3
CITY OF
CHAHHASSEH
-
CC DATE:
HOFFMAN:v
STAFF REPORT
PROPOSAL:
Revised Preliminary Plat to plat 36 rural single family lots on 46.5 acres. Lots
will be outside the MUSA line and as such will require on-site sewer and water.
LOCATION:
Located south of County Road 14, east of Hwy. 101, Halla Nursery
APPLICANT:
Donald Halla
10095 Great Plans Blvd.
Chaska, MN 55318
PRESENT ZONING:
A2, Agricultural Estate
ADJACENT ZONING
AND LAND USE:
N - A2, Agricultural Estate, Pioneer Trail
S - A2, Agricultural Estate, Creekwood Road
E - A2, Agricultural Estate, Hwy. 101IGreat Plains Blvd.
W - A2, Agricultural Estate, Bluff Creek Golf Course
COMPREHENSIVE PLAN: The City's Comprehensive Plan identifies this plat as lying in Park
Deficient Area #8. However, due to the large lot sizes of developments in this area (see attached), in
the proximity of the golf course in the future Bluff Creek Park Trail Corridor, acquisition of park
property as a part of this plat is not being recommended. The Park and Recreation Commission
recommends the City Council require full park fees be paid at the time of building permit application
at the rate then in force in lieu of park land dedication for Great Plains Golf Estates.
COMPREHENSIVE TRAIL PLAN
The Recreation Section of the City's Comprehensive Trail Plan identifies Hwy. 101 (Great Plains
Boulevard) as a trail alignment. At present, this trail is labeled a phase-three addition during the 2000-
2010 time frame. With the future status of Hwy. 101 in question, it is imperative that a trail easement
Great Plains Golf Estates
May 25, 1993
Page 2
of sufficient size be acquired as a part of this plat to allow for the possible future construction
of this trail alignment. In light of the uncertainty surrounding Hwy. 101, it is recommended that
a 3D-foot trail easement be dedicated along the westerly side of State Highway 101 (specifically,
Lots 10, 11, 12 and 13, Block 1 and Lots 4,5, 11 and 12, Block 3 and Outlot A). Said easement
to be held on fIle until such time when a trail is constructed. Once the trail is constructed on one
side of Hwy. 101, the additional trail easement not used may be vacated. It would be the city's
intentions to construct the trail in the outer most feasible limits of the easement at a future time
so as to minimize the impact of the trail construction on adjoining properties.
RECOMMENDATION
Therefore, it is recommended that as a condition of approval of Great Plains Golf Estates, the
Park and Recreation Commission recommends the City Council retain a 3D-foot trail easement
along the entire westerly border of State Highway 10 1.
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C ITV OF
CHANHASSEN
1-
..
690 COtJLTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
May 19, 1993
Chan/Chaska Soccer Club
Attn: Mr. Dick Maloney
1315 Bluff Creek Drive
Chanhassen, MN 55317
Dear Mr. Maloney:
Your request for the City of Chanhassen to cons. . a soccer kickwall was reviewed at the April
27 Pm:k and Recreation Co~ssio.n mee~g.~(jl~ver, before a fmal decision will be made
regardmg your request, addtbonal informabo 'IS trtn.......g sought from the Chan/Chaska Soccer
Club. You are invited to attend the next Par nd R~eation Commission meeting on Tuesday,
May 25th, at 7:30 p.m. to express your id and op~~ns.
I have included the memorandum for yo eview that ~~ written and presented to the Park and
Recreation Commission at the April 2 meeting. If ytJ~ have any questions, please feel free
to contact me.
Sincerely,
1~
Jeny Ruegemer
Recreation Supervisor
JR:njd
pc: Jay Johnson
~
t J PRINTED ON RECYCLED PAPER
CITY OF
CHANHASSEN
690 CQULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
I
MEMORANDUM
TO: Todd Hoffman, Park and Recreation Director
FROM:
Jerry Ruegemer, Recreation Supervisor
1R
DATE:
April 23, 1993
SUBJ:
Request for a Soccer Kickwall
In February a letter was received from the ChanlChaska Soccer Club inquiring about the
possibility of constructing a double-sided soccer kickwall in City Center Park, or whatever other
park would lend itself to this type of request. This item was previously tabled and it will be
addressed now.
The soccer wall would be an asset to the Soccer Club, allowing them to develop shooting skills,
and hand/eye coordination. Using this type of wall would also save wear and tear on our goals
and nets.
The location of this wall has not been determined at this time. Your suggestion to have the
soccer wall serve as a dual purpose ~all would better justify this request. One possible location
that was discussed was the northwest side of the tennis court at City Center Park. This location
would allow the wall to be used on the north side for soccer and the south side for tennis. The
dual wall would be better economically serving two user groups. One other option that might
be considered V{ould be to erect the wall along the evergreen tree line on the west side of City
Center Park, running parallel with Kerber Boulevard. Selecting this location would eliminate the
dual use, but the wall wOuld bebe~r disquised.
One concern with the soccer wall is that of aesthetics. The soccer wall will be used at best 4 _
5 months during the year. Depending on the]ocation of the wall, it has the potential of being
an eyesore. ~1;
Before a decision can be made regarding this issue, it would be nice to receive guidance from
the Park and Recreation Commission as to their opinion on the soccer wall. It is staff's
recommendation that the Park and Recreation Commission review this item ~d give staff
direction.
ft
t J PRINTED ON RECYCLED PAPER
7 J
.
.
.
.
.
.
Fett 11 1992.
'~-~:'h~~;5.E;"i PAPf.. 8.. FEe COf"li'1iE5ICir\~
~
Att. TOdrJ Hoffrnon
C:. :![: ,: ::;(II~.L.E F. i'- I ::i-:.:-,1" AL L
;f1e C",:!r:/U'esk~ Soc(:er CJutr thot sert'es the youth of Dist 112 would
: j f~':- f:) ri?cornrr',end the t,uildi ng of 0 ~;cl(:cer kl cKwoll somewher~ neo( 0'!01"1
e~~:~:.;-"'.'-!.' '::'- City Perk or wherever it would be used the most.
1>, ,jOlltr!€, ~i(l~d woll "".~!!!ld rr(l~l~hJ.. ~.r.. ft"',t' mc!st economic~l if thE' e,rE'e
'.M,:,!. ~:: r,e,"'!y,it ,.c:.::~"'(: on tlf:':t!'j ~;ldes, It wCluldbe especioJly good for the
'~;::':':"~ .. j,~.c; ;,-. ."1'3'".:-10:' UII?!!- ~;b(1Of.1ng ~;kills. It would ol~;o ~;~'./e weer ond
i.e.::;;" iY: 'ti:-:- 'J(l01': ~nlj nt?t~
,,,.s _',:,::8 :'~' :.:':'~; i'1Cio',,;,.::n >,i"O!':'C t!e e gre:f ~Clj.~;-:-,.,. (~,!- tl'!8 k:1C':: e''''c .;
:.. '; ...:..~: 1 ': 1" t: ,:: C ~..) r C'r" 1 ~,~ ::. !::!::~ '..- ,L ' ,or' 'ft, ~ " ,- :!t' :;0....,.. Co'" C h:~') .;.!~!u 1 d tIE'
t"'t:,jd':, t.o ij:)n Ow' work C"_ltnes ~r:d neJp
. ,",- ;l" ''':'~'!.: for- uo!:;- .:'.)r:::"iCf"'-ef.tun !_I;& t'I~~. Lt~-(:;fct.
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.
.
C ITV OF
CHANHASSEN
5
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900. FAX (612) 937-5739
MEMORANDUM
TO:
Park and Recreation Commission
FROM:
Todd Hoffman, Park and Recreation Director
DATE:
May 19, 1993
SUBJ:
Consider Park and Recreation Survey
As a part of the planning process for the proposed Chanhassen Community Center facility,
Assistant City Manager Gerhardt is investigating the possibility of hiring Decision Resources,
Ltd. to conduct a survey in that regard. I will be discussing the Park and Recreation
Commission's desire to survey the community in regard to park and recreation services as a part
of the update of the Recreation Section of the City's Comprehensive Plan. Typically, these
surveys account for a random survey of 400 residents and are conducted by phone with an
average length of conversation being 15 to 30 minutes. I will update the commission in this
regard on Tuesday evening.
ft
~., PRINTED ON RECYCLED PAPER
.
.
.
CITY OF
CHANHASSEN
bA-I-I
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900. FAX (612) 937-5739
MEMORANDUM
TO:
Park and Recreation Commission
Todd Hoffman, Park and Recreation Director Tff I~
FROM:
DATE:
May 19, 1993
SUBJ:
Administrative Presentations
6a.
RogersID01eisiIBandimere Park Issue: Upon reviewing the concept plans and completing
the site visit, I will be interested in hearing the commission's comments in this regard.
It is staff's position that a land trade represents a win/win situation with one caveat--the
loss of views to Lake Riley.
6b. Redevelopment of Downtown/Communitv Center: The Housing and Redevelopment
Authority will be addressing this issue on Thursday, May 27. I will be forwarding a
report of any action taken that evening to you.
6c. Lake Ann Park Picnic Shelter Grand Opening: See attached report.
6d. Lake Ann Park Irrigation: Staff is extremely disturbed with Innovative Irrigation and
Mike Moriarty, its President, over their failure to perform on their contract. With
assurances from Mr. Moriarty, I informed the commission that work would commence
on Wednesday, April 28. To date, no substantial work has been completed. It is no fault
of Mr. Moriarty, but staff is operating on a very short fuse in light of the Lake Ann Park
utilities and picnic/recreation shelter. contracts. The position of this office is being
forwarded to Mr. Moriarty.
6g.
Establish Special June 8 Commission Meeting: In light of the number of land
development proposals being reviewed by staff, it will be necessary to schedule a June
8th Park and Recreation Commission meeting. At the time of this writing, it is unsure
whether or not staff will be prepared to address any issues in regard to the updating of
the Recreation Section of the City's Comprehensive Plan at that time.
n
~., PRINTED ON RECYCLED PAPER
.
.
.
rob
-
City Council Worksession
Monday, May 3, 1993
Downtown Redevelopment Plans
Joint Worksession
with City Council/HRAlPlanning CommissionlPark and Recreation Commission
COMMUNITY CENTER
~ CITY COUNCIL
Colleen
Mike*
Richard
Mark
Don*
DO
~
~
~
DON'T
~
~
~ PARK AND RECREATION
Jim Manders ~
Jim Andrews ~
Ron Roeser ~
Fred Berg ~
Larry Schroers ~
~ PLANNING COMMISSION
Ladd Conrad
Diane Harberts
~
~
~HRA
Jim Bohn
~
* Also members of the HRA.
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CITY OF
CHAHHASSEH
hC!
-
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900. FAX (612) 937-5739
MEMORANDUM
TO:
Todd Hoffman, Park and Recreation Director
FROM:
Dawn Lemme, Program Specialist
Lake Ann Park Shelter Grand Opening \)~ .
May 20, 1993
DATE:
SUBJ:
Dates and schedules have been set for two Lake~nn Grand Opening Celebrations.
June 3
June 12
Dignitary Open House
Public Celebration
In the administrative packet you will find a copy of the dignitary invitation, sent to approximately
65 people, all who were and are involved in the Lake Ann ParklPicnic Shelter project. This
should be a nice evening with entertainment by the J.C. Band, who will be playing a mixture of
instrumental jazz and show tunes. Supper is being catered by the Divine Swine Catering Service,
who will be serving burgers, brats, salads, fruit, beverage, and dessert
The public celebration is currently scheduled to take place as follows. Publicity will be sent out
as a Villager insert......
Entertainment will be provided by "Brazil Nuts,"a 7-piece band playing island
type music, from 12:00-1:00 p.m., and then from 1:30-2:30 p.m.
A ribbon cutting ceremony and dedication of the building will take place at 1 :00 p.m.
Prize drawings consisting of food and rental coupons, Lake Ann passes, and merchandise
will be done. A grand prize drawing of a canoe or other major item will also be given
away that day.
We will run concession stand specials (yet to be determined) and rental specials, as well.
Weather permitting, this could be one of our biggest weekends of the summer.
n
~.1 PRINTED ON RECYCLED PAPER
.
.
.
CITY OF
CHANHASSEN
be~
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
MEMORANDUM
TO:
Todd Hoffman, Park and Recreation Director
FROM:
Jerry Ruegemer, Recreation Supervisor
DATE:
May 20, 1993
SUBJ:
4th of July Update
Chanhassen's 1993 4th of July Celebration will be a three-day celebration starting Friday, July
2, 1993, and concluding Sunday, July 4, 1993. ~. scheduled events will be at City Center Park
and Lake Ann Park. Friday will play host t6the Community Picnic and to the Hi-Tops
performance, Saturday will be family Fun Day at Lake Ann Park, and Sunday will wrap up with
the Adult Fishing Contest and Softball Tournament. The schedule of events is in the process of
being finalized and will be completed soon.
The 4th of July T-Shirts have been printed and delivered. The shirts and tank tops are ready to
go on-sale to anyone who is interested in purchasing one.
Chanhassen's new Sponsorship Program is being well-received by our area local businesses.
Currently, over $6,000.00 has been collected, which will be divided evenly and applied towards
all of our special events.
Additional 4' x 8' 4th of July signs will be made and displayed around town to promote the
celebration. Advertisements .and articles will also be published in our area local newspapers.
Many loose ends need to be tied-up soon, in an effort to keep the 4th of July Celebration on
schedule. These will be completed soon.
~
t.., PRINTED ON RECYCLED PAPER
II
.
.
.
CITY OF
CHANHASSEN
6F
----
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
MEMORANDUM
TO:
Todd Hoffman, Park and Recreation Director
Dawn Lemme, Program Specialist \)~
May 19, 1993
FROM:
DATE:
SUBJ:
Lawn Chair Lyrics Concert Series
This memo is being written to inform you of th~some of the Lawn Chair Lyrics Concert Series
details beyond what the attached newsletter piece has included. This special event is really
exciting, and I think will be well-received by the community. Now the weather needs to be
cooperative and we're all set to go. Just in case, as atain location I have submitted and received
approval to use the Chanhassen Elementary School as. a back up.
Each concert is co-sponsored by us and one community group. The Cedar Avenue Big Band is
also being partially subsidized by the Minnesota Musicians Trust Fund. The following is a
breakdown of the band costs and the donations given by the community groups.
Donations
Rotary Club, Chanhassen
Lions Club, Chanhassen
American Legion, Chanhassen
Chamber of Commerce, Arts Festival Committee
$ 500.00
$ 400.00
$ 500.00
$ 150.00
Band Fees
Whitewater
Cedar Avenue Big Band
Acoustic Cats
Cordon Blues
$ 300.00
$ 852.00
$1,000.00
$ 300.00
As far as publicity, I plan on doing flyers, newsletter, word of mouth through sponsoring groups,
Villager, and the biggest thing is hopefully to get approval to print the schedule in the Festival
Foods weekly flyer or on their grocery bags. I have spoken to Bob Murray (Festival Foods) and
n
~J PRINTED ON RECYCLED PAPER
Mr. Todd Hoffman
May 19, 1993
Page 2
am currently waiting to find out what our direction will be with them. A banner still needs to
be made, and arrangements for staging are being worked on. I have sent another memo to Dale
Gregory in regards to upkeep of the park site and seasonal staff to help with each event
Get your lawn chair ready!
I
,
.
.
.
, ~HC~~~
CONCERT SERIES
.~
1
i
FREE MUSIC IN THE CITY OF CHANHASSEN's
FUTURE CENTRAL PARK
(South of City Hall, corner of 78th Street and Kerber Blvd.)
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THURSDAYS
7:00 P.M.
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Bring a lawn chair or blanket & enjoy!
In case of inclement weather concerts will be held in the Chanhassen Elementary
Park & Recreation 937-1900
16
.
.
.
CITY OF
CHANHASSEN
Io~
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900. FAX (612) 937-5739
MEMORANDUM
TO:
Todd Hoffman, Park and Recreation Director
FROM:
Jerry Ruegemer, Recreation Supervisor
DATE:
May 19, 1993
SUBJ:
Arbor Day Celebration
The 1993 Arbor Day Celebration was a new coIrimunity event that was developed to promote
planting of trees, and preserving the natural beauty of our Chanhassen Parks.
The celebration started on Friday, April 30th, .by giving away 2,000 White Spruce and Norway
Pine seedlings in front of Festival Foods market. The tree seedlings were donated by Emerson
EMC, and distributed by the Chanhassen Men's Club. All 2,000 seedlings were gone by 4:30
p.m.
The tree sale on Saturday, May 1st, sold 25 - 1~ inch sugar maples. The trees were placed in
the public safety parking lot for the/selection process.i. It was very beneficial to have park
maintenance staff present to help and to load the trees into vehicles. The remaining trees were
planted in various parks around Chanhassen.
Park Pride Day was another special event established to preserve Chanhassen's natural amenities.
A total of seven groups participated, which was a pleasant surprise for this flIst-year organized
event. Groups c;Qllected refuse at a designated park; after the park was cleaned, the refuse was
transported to City Center Park for the official judging. The group collecting the most refuse was
awarded Arbor Day hats and a sugar maple tree. The sugar maple tree will be planted at a park
chosen by the winning group. All Park Pride and tree sale participants were treated to free hot
dogs and fountain pop courtesy of Chanhassen Park and Recreation. The food was a good
reward for all the hard working participants.
The idea of the Arbor Day Celebration was well received, and will be continued. Additional
advertising will be needed to promote the park pride portion of this event.
n
~., PRINTED ON RECYCLED PAPER
PROGRAM EVALUATION FORM
.
Program Name
Park Pride Oo&,
Code No:
Quarter Program was offered:
SU F
w@
Number of Sessions Offered:
I
&;0 - 70 feLJpJe
7 0. t'tJu~.5
"0 I
Total Number of Participants:
Length of Class (minutes)
Length of Class (weeks)
Meetings/Week:
Class Fee:
Should this program be offered again? ~
Comments on program: ~ EI/~
.
REVENUE
x $ = Nfl
No. of Participants Fee
x $ =
No. of Teams Fee
=
Donations
x $
=
Refunds
Fee
Total
~
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.
.
.
EXPENSES
3 - If () k- 'Ma i f114n "ne.."- w.,rn-e,.$
S l. t'4 r
a anes l}l/e.,.. T,'rIl e..
A.
B. Contractual Services:
1. Bus Rental
2. Miscellaneous Services
3.
4.
5.
C. Supplies:
1.
2.
3.
Craft/Program Supplies
Equipment
Tickets
Fo~Y)7i:l tY\ 'FOf - PepS!
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Total
Total
7/';J.?rCf
ACTUAL
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minnesota department of health
Elizabeth V. Wattenberg, Ph.D.
Environmental Toxicologist
Health Risk Assessment
925 S.E. Delaware Street
P.O. Box 59040
Minneapolis, MN 55459-0040
Office: (612) 627-5050
Fax: (612) 627-5075
General Information: (612) 627-5100
.
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Risk Assessment on ScourgeR and puntTM 57-OS
Materials used by the Metropolitan Mosquito Control District
for the Control of Adult Mosquitos
Prepared by
The Minnesota Department of Health
Division of Environmental Health
Section of Health Risk Assessment
March 17, 1993
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TABLE OF CONTENTS
Introduction
Summary
Risk Assessment of scourgeR
I. General Comments
II. Ingestion Exposure
A. Resmethrin
B. Piperonyl Butoxide
C. Summary and Conclusion
III. Inhalation Exposure
A. Estimation of Air Concentration
B. Estimation of Safe Level of Exposure
C. Summary and Conclusion
IV. Dermal Exposure to Resmethrin
Risk Assessment of puntTM 57-OS
I. General Comments
II. Ingestion Exposure
III. Inhalation Exposure
IV. Dermal Exposure to Permethrin
References
Calculation of Soil Ingestion
Appendix A
Appendix B
Appendix C
Appendix D
Attachment 1
Attachment 2
Reference Dose (RfD)
Adjusting Animal Inhalation Data
for Application to Humans
Calculation of Dermal Exposure
Air Concentration Modeling for Resmethrin
Air Concentration Modeling for permethrin
page
2
3
8
8
11
11
14
16
17
18
21
25
27
31
31
33
37
42
46
48
51
53
54
Introduction
The Metropolitan Mosquito Control District (MMCD) controls .
mature flying mosquitos (adults) to supplement larval mosquito
control. Adult mosquito control involves treating parks and
recreation areas with two commercial pesticides, ScourgeR and PuntTM
57-OS. The MMCD treats athletic fields, camps, zoos, and areas
designated for civic events. The MMCD may also treat residential
areas within a quarter mile radius of parks and recreation areas.
ScourgeR and Punt TM 57- OS contain the synthetic pyrethroid
insecticides resmethrin and permethrin respectively. Pyrethroids
di~rupt the insect nervous system. These insecticides were first
isolated from chrysanthemum flowers. Researchers later developed
synthetic pyrethroids, which are more potent and more stable in
sunlight than naturally occurring pyrethroids.
People! could be exposed to ScourgeR and PuntTM 57-OS by three
main pathways: 1) incidental ingestion of treated soil or
vegetation, 2) inhalation of the pesticide during or after
treatment, and 3) direct skin contact with treated soil or foliage.
The following risk assessment estimates the potential toxicity
to humans from exposure to ScourgeR and puntTM 57-OS, and discusses
the uncertainties in this estimation. To assure an adequate margin
of safety, the risk estimations incorporate protective assumptions
and near worst case exposure scenarios. It should be emphasized
that risk assessment does not provide a precise quantitation of
exposure and safety. Instead risk assessment indicates types of
exposures that might be cause for concern and estimates safe levels
of exposure with a wide margin for protection. .
Conclusion
Exposure to ScourgeR or Punt™ 57-OS through ingestion or skin
contact should not pose a health risk to humans under the scenarios
described in this document. Brief inhalation exposure to the
pesticides should not pose a health risk. Nevertheless, children
should be prevented from having prolonged inhalation exposure to
the pesticides. For example, children should not be permitted to
follow the pesticide applicators as they work. The risk
assessment of these pesticides may be revised if new toxicologic
data, air monitoring data, or other types of data are received.
IThis risk assessment only considers p~ople who do not work
with ScourgeR and punt™ 57-OS. If the pesticide applicators who
work with ScourgeR and PuntTM 57-OS wear the recommended safety
equipment, which includes gloves, longsleeves, goggles and a
respirator, they should avoid hazardous exposure to the pesticides.
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Swmnary
The intent of this risk assessment is to determine whether
exposure to the pesticides ScourgeR and puntTM 57-OS could be toxic
to humans. Four main questions are addressed for each pesticide.
First, are any of the ingredients in the pesticides potentially
harmful to humans? Second, how much of these ingredients could a
human be exposed to without suffering harmful effects? Third, how
much of these ingredients might humans be exposed to under the
treatment conditions described by the MMCD? Fourth, does the
estimated level of exposure to these compounds exceed the estimated
level of safety?
Due to various uncertainties in the calculations, this risk
assessment should not be interpreted as a precise quantitation of
exposure and safety, but instead as an indicator of the types of
exposures that might be cause for concern. Uncertainties arise
from a number of sources. For example, if the amount of a chemical
in the air or soil has not been measured, it must be estimated.
Sometimes the amount or quality of toxicologic data on a chemical
is not adequate to accurately predict what toxic effects it might
have in humans. In addition, exposure can vary greatly among
individuals throughout a population. The amount of exposure
depends on many factors including age, size, residence, and
activities.
To account for various types of uncertainty, some general
assumptions are made. In all cases, we try to make assumptions
that err on the side of protecting human health. For example, we
assume that people are exposed to almost as much of the pesticide
as possible, even if the average person would be exposed to less.
This gives a measure of protection to people who are sensitive to
the pesticides, and provides a margin of safety for the average
person. Most of the assumptions a~d equations used to estimate
exposure follow United States Env~ronmental Protection Agency
guidelines.
The estimation of a safe level of exposure to a chemical can
be expressed in different ways. In this document it is referred to
as either a reference dose (RfD) expressed in units of milligrams
of a substance ingested per kilogram of body weight per day
(mg/kg/day), an estimated safe air concentration expressed in
milligrams of the chemical inhaled per cubic meter (mg/m3), or a
Maximum Daily Allowable Intake (MDA), expressed in milligrams of a
chemical ingested each day (mg/day). A more detailed explanation
of RfDs and MDAs is given in Appendix B.
3
ScourgeR
Three tables summarizing the risk assessment of ScourgeR
follow. Please refer to the full risk assessment for a detailed
explanation of the calculations and assumptions that yielded these
results.
The potentially hazardous chemicals contained in ScourgeR are
the pesticide resmethrin, piperonyl butoxide, and an aromatic
petroleum solvent (APS). scourgeR also contains a mineral oil- type
material.
Exposure to these chemicals could come from eating, inhaling,
or having skin (dermal) contact with ScourgeR. Exposure is
estimated for a child and an adult, and compared to the estimated
safe level of exposure. Due to lack of toxicity data, piperonyl
butoxide is only evaluated for oral and inhalation exposure, the
aromatic petroleum solvent is only evaluated for inhalation
exposure, and no risk assessment is done for the inert ingredients.
4
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Ingestion
ScourgeR
Estimated
MDA Daily Intake
(mg I day) (mg/day)
3.2 5.3 x 10-6
14 2.6 x 10-6
13 1.5 x 10-5
59 7.0 x 10-6
Resmethrin (child)
Resmethrin (adult)
Piperonyl Butoxide
( child)
Piperonyl Butoxide
(adult)
Inhalation
Estimated Safe
Air Concentration
(mg 1m3)
0.57
2.0
16
Estimated
Air Concentration
(mg 1m3)
1.4.
1.4
4.0
Resmethrin (child)
Resmethrin (adult)
Piperonyl Butoxide
(child)
Piperonyl Butoxide
(adult)
APS (child)
APS (adult)
57
4.0
7.8
27
1.7
1.7
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Estimated Daily Intake
Dermal
MDA
(mg/day)
80
350
Soil
(mg/day)
1.2 x 10-4
3.3 X 10-4
Child
Adult
Foliage
(mg/day)
0.12
0.34
Conclusion: Oral and dermal exposure to ScourgeR, under the
conditions described in this document, should not pose a health
risk. Brief inhalation exposure to ScourgeR should not pose a
heal th risk. Nevertheless, children should be prevented from
having prolonged inhalation exposure to ScourgeR. For example,
children should not be permitted to follow the pesticide
applicators as they work. See the full risk assessment on scourgeR
(part II, section C) for a detailed explanation of the
uncertainties in the estimation of inhalation exposure.
5
Punt™ 57-OS
Three tables summarizing the risk assessment of PuntTM 57-OS ~
follow. Please refer to the full risk assessment for a detailed
explanation of the calculations and assumptions that yielded these
results.
The potentially hazardous chemicals contained in puntTM 57-OS
are the insecticide permethrin and a xylene range aromatic solvent.
Before applying puntTM 57-OS, the MMCD dilutes it with soybean oil
or a food grade mineral oil.
Exposure to these chemicals could come from eating, inhaling,
or having skin (dermal) contact with puntTM 57-OS. Exposure is
estimated for a child and an adult, and compared to the estimated
safe level of exposure. This risk assessment evaluates the oral,
inhalation and dermal routes of exposure to permethrin. Due to
lack of data, no risk assessment is done for the xylene range
aromatic solvent.
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. Pun t TM
. 57-OS
. Estimated
MDA Daily Intake
Ingestion (mg/day) (mg/day)
II Child I 0.8 I 1.5 x ... ~.~ II
.. -
Adult 3.5 7.0 x :. ::;.5
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Inhalation
Estimated Safe
air concentration
(mg/m3)
1.6
5.6
Estimated
air concentration
(mg/m3)
4.1
4.1
Permethrin (child)
permethrin (adult)
Estimated Daily Intake
Dermal
2MDAu,x
(mg/day)
160
700
W~rT
(mg/day)
1.6
7.0
Soil
(mg/day)
3.4 x 10-3
9.1 X 10-3
Foliage
(mg/day)
3.5
9.8
Child
Adult
Conclusion:
Oral and dermal exposure to punt™ 57-OS, under t~e conditions
described in this document, should not ~ose a health risk.
Brief inhalation exposure to Punt 57-OS should not pose a
heal th risk. Nevertheless, children should be prevented from
having prolonged inhalation exr sure to punt™ 57-OS. For example,
children should not be per::,itted to follow the pesticide
applicators as they work.
Al though the estimated dermal exposure to permethrin from
foliage exceeds the MDA for irritation, incidental contact with
foliage probably would not result in significant irritation. The
calculation of estimated daily intake assumes that there is 100%
transfer of permethrin from foliage to the hands, arms, and legs.
Under most conditions, contact with treated foliage should not
result such a large exposure. See full risk assessment on puntTM
57-OS [part IV, section (4)] for an explanation of the
uncertainties in the estimation of dermal exposure.
2This represents the RfD for toxicity.
3This represents the RfD for skin irritation.
7
. Risk Assessment of ScourgeR
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I. General Comments
ScourgeR contains 4.14% resmethrin4, 12.42% piperonyl
butoxide, and 5% of an aromatic petroleum solvent. Resmethrin is
an insecticide. Piperonyl butoxide is not an insecticide, but
serves to increase the potency of resmethrin in mosquitos. The
remaining components of ScourgeR are listed as inert ingredients,
which are mainly composed of a mineral oil-type materials.
The MMCD applies ScourgeR using truck-mounted foggers.
Fogging is done 1 to 2 hours before sunrise or at 8 or 9 o'clock at
night, when mosquitos become active. The MMCD treats parks and
recreation areas, and residences within a quarter mile radius of
these areas. In high use parks, treatments occur a maximum of 5
times during the summer, at 10 day intervals. ScourgeR is applied
at a rate of approximately 0.0035 pounds of resmethrin and 0.01
pounds of piperonyl butoxide per acre. Resmethrin de~rades in
sunlight with a half life6 of approximately 45 minutes. It is
completely degraded from plants within 5 days and 98% degraded from
soil in 16 days (WHO, 1989).
One source of uncertainty that runs throughout this risk
assessment concerns the potential difference in potency between the
resmethrin used in toxicologic studies, which are used to estimate
safe exposure levels, and the resmethrin contained in ScourgeR. .
Resmethrin is usually made up of a mixture of cis and trans
isomers. The cis isomer is more toxic than the trans isomer. A
mixture of cis and trans isomers is less toxic than either alone
(Miyamoto, 1976). The difference in toxicity between the most
potent pure cis isomer and a 4:1 trans:cis mixture is less than 5
fold (Miyamoto, 1976). ScourgeR contains resmethrin that is a
4The chemical name for resmethrin is [5-(phenylmethyl)-3-
furanyl]methy12,2-dimethyl-3-(2-methyl-1-
propenyl)cyclopropanecarboxylate.
sPersonnel Communication.
Manager, Toxicology Services,
1992.
Letter from John R. De Prospo,
Roussel Bio Corporation, May 29,
~alf-life is the time it takes for half of a compound to
degrade. For example, compound A has a half-life of 10 days. If
there are 8 grams of A on day 1, there will be 4 grams of A on day
10. On day 20 there will be 2 grams of A, etc.
7personal Communication. John De Prospo, Manager, Toxicology
Services, Roussel Bio Corporation, May 28, 1992, 201-628-7200.
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maximum of 30% cis isomer and a m1n1mum of 70% trans isomer. Most
toxicity studies use technical grade resmethrin, which is a mixture
of cis and trans isomers. Unfortunately, these studies usually do
not state the ratio of the cis and trans isomers of the resmethrin
used in the experiments. Because of the limited information, we
cannot be certain that the potency of the resmethrin used in the
toxicology studies is the same as that of the resmethrin contained
in scourgeR.
A second source of uncertainty concerns the effect of
piperonyl butoxide on the potency of resmethrin in humans.
Piperonyl butoxide increases the potency of resmethrin in insects
by inhibiting resmethrin metabolism. It is unclear how piperonyl
butoxide affects resmethrin metabolism in mammals.
Three studies suggest that piperonyl butoxide may not increase
the potency of resmethrin in humans to the extent it does in
insects. A chronic toxicity study by Sarles and Vandergrift found
that a preparation of 6 parts piperonyl butoxide to 1 part
_::/rethrins was no more toxic than piperonyl butoxide alone (Sarles
and Vandergrift, 1952). This study is not definitive because it
was conducted with a mixture of pyrethrins and not resmethrin
alone. Furthermore the ratio of pyrethrins to piperonyl butoxide
in the Sarles and Vandergrift study was 1 to 6, and the ratio of
resmethrin to piperonyl butoxide in scourgeR is 1 to 3. In a study
by Conney et al., 8 volunteer men were given 50 mg (0.7 mg/kg) of
piperonyl butoxide. This dose of piperonyl butoxide did not appear
to affect the metabolism of antipyrine. Both resmethrin and
antipyrine are metabolized by microsomal enzymes. Microsomal
enzymes are a mixture of different enzymes and isoenzymes. One
weakness in this study is that it does not provide evidence that
antipyrine and resmethrin are metabolized by the same enzyme or
isoenzyme. A third study showed that piperonyl butoxide increases
the potency of resmethrin less than two fold in rats (Roussel Bio
A). In this study, the 8LDso for resmethrin in rats was 4250 mg/kg.
A preparation of ScourgeR containing 18% resmethrin and 54%
piperonyl butoxide yielded an LDso of 2700 mg/kg (Roussel Bio A) .
The degree to which piperonyl butoxide might increase the
potency of resmethrin in humans is unknown. The Roussel Bio study
indicates that piperonyl butoxide could increase the potency of
resmethrin in mammals by approximately 1.6 fold. To account for
the potential ofpiperonyl butoxide to increase the potency of
resmethrin in humans, the risk estimations for resmethrin
incorporate an uncertainty factor of 2.
8The LDso is the dose at which half of the animals treated with
the chemical die.
9
The Material Safety Data Sheet for scourgeR lists resmethrin,
piperonyl butoxide and the aromatic petroleum solvent under .
hazardous ingredients. A risk assessment for the oral, inhalation
and dermal routes of exposure to resmethrin follows. Due to lack
of toxicity data, piperonyl butoxide is only evaluated for oral and
inhalation exposure, the aromatic petroleum solvent is only
evaluated for inhalation exposure, and no risk assessment is done
for the inert ingredients.
The number of times the MMCD treats a given area differs
depending on the type of activity that takes place there. Some
areas are only treated once for a special event, such as a parade
or festival. The MMCD may treat high use parks up to 5 times a
season at 10 approximately day intervals.
To be protective, this risk assessment uses an exposure
scenario for a high use park. In other words, it assumes that
ScourgeR is applied for 50 days during the summer (5 applications
at 10 day intervals), and that a child and an adult use that park
everyday for those 50 days.
The following' calculations incorporate assumptions and
uncertainty factors that should err on the side of protecting
public health. The scenarios assume near maximum exposure in order
to protect sensitive individuals and provide an adequate margin of
safety for the average person.
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II. Ingestion Exposure to Resmethrin and Piperonyl Butoxide
. Exposure to resmethrin and piperonyl butoxide could occur
through incidental ingestion of contaminated soil and contaminated
vegetation. For example, a child might place his/her hands in
his/her mouth during play at a park. There is also a chance of
exposure through ingestion of unwashed homegrown vegetables. For
example, fogging of residential neighborhoods within a quarter mile
radius of a park or recreation area could result in the inadvertent
treatment of gardens.
Due to the short half life of resmethrin, it is assumed that
significant exposure to resmethrin will not occur after the day of
application. Since there is a 10 day interval between treatments,
it is assumed that each day of exposure is independent. Therefore
a risk assessment is done for an acute (one day) exposure to
resmethrin.
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Since the half life of piperonyl but oxide was not available,
it is assumed that piperonyl butoxide persists in the soil and on
vegetation for the whole 50 day treatment period. The risk
assessment for piperonyl butoxide assumes that exposure occurs
every day for the 50 day treatment period.
Exposure to resmethrin and piperonyl butoxide through
ingestion of soil and homegrown vegetables is estimated for al-6
year old child and an adult. Appendix A provides the general
equations and assumptions for ingestion exposure.
Note: Section A estimates ingestion exposure to resmethrin,
section B estimates ingestion exposure to piperonyl butoxide, and
section C provides a table summarizing the results, and a
conclusion.
A. Resmethrin:
(1) Estimation of the amount of resmethrin
in and on soil and veqetation:
0.0035 lb of resmethrin applied per acre (information
provided by the MMCD) .
(0.00351b/acre) (450 g/lb) = 1.575 g/acre
(1.575 g/acre) (acre/43,560 ft2) = 3.6 x 10~ g/ft2
(3.6 x 10's g/ft2) (ft2/929 cm2) = 3.9 X 10.8 g/cm2
(3 . 9 x 10.8 g / cm2) (103 mg / g) = 3. 9 x 10.s mg / cm2
_ 3.9 x 10~ mg/cm2 resmethrin deposited on soil and vegetation
_ 2.6 x 10's mg resmethrin per gram of soil (see Appendix A)
.
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(2) Orai Reference Dose (RfD) for Resmethrin:
.
Appendix B explains how to calculate an RfD, the use of
uncertainty factors, and how to calculate a Maximum Daily
Allowable Intake (MDA).
The World Health Organization's environmental criteria
document for resmethrin cites a 90-day rat study that suggests a
NOAEL of 66 mg/kg/day (WHO, 1989). This document also cites a
study that reports a NOAEL for fetotoxicity of 40 mg/kg/day (WHO,
1989). To be protective, the lower NOAEL for fetoxicity is used
to calculate the RfD. Long term exposure studies in rats and
mice indicate that the synthetic pyrethroid insecticide
resmethrin is not carcinogenic (WHO, 1989).
NOAEL = 40 mg/kg/day
UF! = 10 for extrapolation from animals to humans
UF2 = 10 for sensitive subpopulations
UF3 = 2 for potential of piperonyl butoxide
to increase resmethrin toxicity
Oral RfD = 40 mq/kg/day = 0.2 mg/kg/day
(10) (10) (2)
MD~hild = (0.2 mg/kg/day) (~6 kg) = 3.2 mg/day
MD~dull = (0.2 mg/kg/day) (70 kg) = ~4 mg/day
.
The confidence in this RfD is medium. The NOAEL for the
fetoxicity study should be protective for subchronic effects.
Note: This is an RfD for subchronic exposure. Due to lack of
adequate data, an acute RfD was not calculated. Using a
subchronic RfD to assess acute exposure is less accurate than
using an acute RfD, but provides a greater margin of safety.
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(3) Estimation of Exposure to Resmethrin
throuqh Soil Ingestion:
See Appendix A for an explanation of equations and assumptions.
Soil ingestion for a child:
(2.6 x 10-5 mg/g) (10-3 q/mq) (200 mq/day)
( 16 kg)
Intakechild = 3.3 X 10-7 mg/kg/day
Daily Intakechild = (3.3 x 10-7 mg/kg/day) (16 kg) = 5.3 x 10. mg/day
Soil ingestion for an adult:
(2.6 x 10-5 mq/q) (10-3 q/mg) (100 mg/dav)
(70 kg)
Intakeadult = 3.7 X 10-8 mg/kg/day
Daily Intakeadult = (3.7 x 10-9 mg/kg/day) (70 kg) = 2.6 x 10. mg/day
(4) Ingestion of Homeqrown Veqetables:
Assume 3.9 X 10-5 mg/cm2 resmethrin is deposited on the
surface of the vegetables (see (1) above). This factor is used
to convert the MDA for resmethrin from mg/day to cm2 vegetable
surface area/day:
MDA.:hild = (0.2 mg/kg/day) (16 kg)/(3.9 x 10-5 mg/cm2)
= 82,000 cm2/day vegetable surface area
MD~dult = (0.2 mg/kg/day) (70 kg) / (3.9 X 10-5 mg/ cm2)
= 360,000 cm2/day vegetable surface area
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B. Piperonyl "Butoxide:
(1) Estimation of the amount of pioeronvl butoxide
in and on soil and vegetation:
.
0.01 lb of piperonyl butoxide is applied per acre
(information provided by the MMCD) .
(0.01 Ib/acre) (450 g/lb) = 4.5 g/acre
(4.5 g/acre) (acre/43,560 ft2) = 1.0 X 104 g/ft2
(1.0 X 104 g/ft2) (ft2/929 cm2) = 1.1 x 10.7 g/cm2
(1.1 x 10.7 g/cm2) (103 mg/g) = 1.1 x 104 mg/cm2
- 1.1 x 104 mg/cm2 piperonyl butoxide is deposited
on foliage and soil.
- 7.3 x 10~ mg piperonyl butoxide per gram soil (see Appendix A)
(2) Oral Reference Dose (RfD) for Pioeronyl Butoxide:
Appendix B explains how to calculate an RfD, the use of
uncertainty factors, and how to calculate a Maximum Daily Allowable
Intake (MDA).
Sarles and Vandegrift performed a wide range of toxicity
studies on technical grade piperonyl butoxide, including chronic
toxicity in rats and dogs, and reproductive studies (Sarles and .
Vandegrift, 1952). These studies suggest a NOAEL of 84 mg/kg/day
for both piperonyl butoxide alone and a mixture of 1 part
pyrethroids and 6 parts piperonyl butoxide.
NOAEL = 84 mg/kg/day
UFl = 10 for extrapolation from animal to human
UF2 = 10 for sensitive subpopulation
Oral RfD = 84 mo/kg/dav = 0.84 mg/kg/day
(10) (10)
This RfD is supported by a study by Conney et al., in which 8
volunteer men were given 50 mg (0.7 mg/kg) of piperonyl butoxide.
This dose of piperonyl butoxide did not have any affect on the
metabolism of antipyrine.
The confidence in this RfD is medium due to the limited data
base. The study looked at a wide range of parameters and included
a chronic study in more than one species. The RfD is supported by
a limited study in humans. Because of limited data, this RfD is
calculated from chronic exposure data. Using a chronic RfD to
assess acute exposure is less accurate than using an subchronic
RfD, but provides a greater margin of safety.
14
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Oral RfD = 0.84 mg/kg/day
MDAuwd = (0.84 mg/kg/day) (16 kg) = 13 mg/day
MD~dult = (0.84 mg/kg/day) (70 kg) = 59 mg/day
(3) Estimation of Exposure to Piperonyl Butoxide
throuqh Soil Inqestion:
See Appendix A for an explanation of equations and assumptions.
Soil ingestion for a child:
(7.3 x 10.s mg/g) (10.3 go/mq) (200 mq/day)
(16 kg)
Intakechild = 9.1 X 10.7 mg/kg/day
Daily Intakechild = (9.1 x 10~ mg/kg/day) (16 kg) = 1.5 x 10~ mg/day
Soil ingestion for adult:
(7.3 x 10.s mg/g) (10.3 q/mg) (100 mg/day)
( 70 kg)
Intakeadult = 1.0 X 10.7 mg/kg/day
Daily Intakeadult (1. 0 x 10-7 mg/kg/day) (70 kg) = 7.0 x 10"" mg/day
(4) Inqestion of Homegrown Veqetables:
Assume 1.1 x 104 mg/cm2 piperonyl butoxide is deposited on the
surface of the vegetables (see (1) above). This factor is used to
covert the MDA for piperonyl butoxide from mg/day to cm2 vegetable
surface area/day:
MDAchild = (0.84 mg/kg/day) (16 kg) / (1.1 X 104 mg/cm2)
= 120,000 ~/day surface area of vegetables
MD~dult = (0.84 mg/kg/day) (70 kg) / (1.1 X 104 mg/cm2)
= 530,000 cm2/day surface area of vegetables
15
C. Summary and Conclusion for Ingestion Exposure to
Resmethrin and Piperonyl Butoxide
.
Soil Ingestion
Estimated
MDA Daily Intake
(mg/day) (mg/day)
Resmethrin (child) 3.2' 5.3 x 10-6
Resmethrin (adult) 14 2.6 x 10-6
Piperonyl Butoxide 13 1.5 x 10.s
(child)
Piperonyl Butoxide 59 7.0 x 10-6
(adult)
Ingestion of Vegetation
Resmethrin
Piperonyl Butoxide
MDA - Child
82,000 cm2/day
120,000 cm2/day
MDA - Adult
3 60 , 00 0 cm2 / day
53 0 , 00 0 cm2/ da y
.
For point of reference, an 8.5" x 11" piece of paper is
approximately 603 cm2. A tomato that is 8 cm high (appr. 3 inches),
assuming that it is spherical, would have a surface area of
approximately 200 cm2. A green pepper that is 13 cm high (appr. 5
inch), assuming that it is a sphere, would have a surface area of
approximately 530 cm2. A lettuce leaf that is 5 cm by 15 cm (appr.
2" x 6") would have a surface area of 75 c~.
Conclusion:
Exposure to resmethrin or piperonyl butoxide through ingestion
of soil or vegetation should not pose a health risk. The estimated
exposure to resmethrin or piperonyl butoxide through soil ingestion
is well below the estimated maximum daily allowable intake for
either chemical. These calculations suggest that even if exposure
to resmethrin occurred every day for SO days, the health risk would
be insignificant. Likewise significant exposure to either
resmethrin or piperonyl butoxide from vegetation would entail
consumption of a huge quantity of unwashed garden vegetables each
day.
.16
.
-
III. Inhalation Exposure to ScourgeR
~ Inhalation exposure to ScourgeR could occur during or after
pesticide treatment. Because data on the air concentration of
ScourgeR were not available, the air concentration was estimated
using a computer model.
According to the MMCD, ScourgeR is applied
particles so that it can be dispersed by the wind.9
estimates that ScourgeR will be dispersed from the
treatment by 30 minutes.1O
Since ScourgeR disperses rapidly from the air, inhalation is
calculated as an acute (short term) exposure. Because treatments
occur at 10 day intervals, each exposure is assumed to be
independent. Inhalation exposure to resmethrin, piperonyl butoxide
and the aromatic petroleum solvent is estimated for a 1-6 year old
child and an adult. The general equations and assumptions used for
these calculations are found in Appendix C.
in small
The MMCD
point of
NOTE: Section A estimates air concentrations, Section B estimates
safe exposure levels, and Section C provides a table summarizing
the results, and a conclusion.
.
9Letters from the MMCD to the Minnesota Department of Health
dated November 30, 1992 and February 12, 1993. Letter from Roussel
Uclaf to the MMCD dated February 16, 1993.
IOSee footnote 9 above.
.
17
A. Estimation of Air Concentration
(1) Resmethrin:
.
Air concentration modeling was performed by Dr. Gregory Pratt,
Program Development Unit, Division of Air Analysis, Minnesota
Pollution Control Agency (MPCA). See attachment 1.
Assumptions for air concentration modeling:
a. 0.159 g resmethrin sprayed per second (calculated from
information provided by the MMCD)
b. 404.7 m2 is covered per second (calculated from information
provided by the MMCD)
c. Treatment is done at a height of 8 feet (information provided
by the MMCD)
d. Wind Speed is between 2.2 and 6.6 MPH
e. The model incorporates the size and settling velocity of the
pesticide particles and the nonvolatile nature of resmethrin.
f. Air concentration at a 5 foot breathing height of a person
standing approximately 20 meters downwind of the treatment.
Although the air concentration below 5 feet should be
slightly lowerll, to be protective, the risk estimation .
assumes the concentration at the breathing height of a child
is the same as at 5 feet.
This model estimates that within a minute of pesticide
application, the air concentration of resmethrin would be
approximately 1.4 mg/m3.
llpersonal Communication with Dr. Gregory Pratt of the MPCA.
18
.
.
.
.
(2) Pioeronyl Butoxide:
Piperonyl butoxide, like resmethrin, has low volatility
(Roussel Bio B). Therefore, the results from the air
concentration modeling for resmethrin can be adjusted to estimate
the air concentration of piperonyl butoxide.
Estimated air concentration of resmethrin - 1.4 mg/m3
ScourgeR contains 4.14% resmethrin and 12.54% piperonyl butoxide.
ScourgeR is applied at a rate of approximately 0.01 lbs piperonyl
butoxide per acre or 1.1 x 104 mg/cm2 [information from MMCD and
see calculations under ingestion exposure, section II, part B,
(1)] .
404.7 m2 is covered per second (calculated from information
provided by the MMCD)
1.1 x 104 mg/cm2 x (g/1000 mg) (100 cm/m)2 x 404.7 m2/s = 0.45 g/s
Approximately 0.45 g of piperonyl butoxide is applied per second.
0.45 q /s APS x 1. 4 mg/m3 resmethrin = 4.0 mg/m3 APS
0.159 g/s resmethrin
Estimated air concentration of piperonyl butoxide - 4.0 mg/m3.
19
(3) Aromatic Petroleum Solvent (APS):
.
APS, like resmethrin, has low volatility (MSDS, Exxon).
Therefore, the results from the air concentration modeling for
resmethrin can be adjusted to estimate the air concentration of
APS.
Estimated air concentration of resmethrin - 1.4 mg/mJ
ScourgeR contains 4.14% resmethrin and 5% APS.
ScourgeR is applied at a rate of approximately 0.0035 lbs
resmethrin per acre (information from MMCD) .
-2APS-- X 0.0035 lb resmethrin/acre = 4.2 X 10-3 lb APS/acre
4 . 14 resmethrin
Approximately 4.2 x 10~ Ib APS is applied per acre.
4.2 x 10~ lb/acre x 450 glIb = 1.9 g/acre
1.9 g/acre x acre/43,560 ft2 = 4.4 x 10~ g/ft2
4 . 4 x 10-5 g 1ft 2 X f t 2 1929 cm2 = 4. 7 x 10-8 g I cm2
404.7 m2 is covered per second (calculated from information
provided by the MMCD)
4.7 X 10.s g/cm2 x (100 cm/m) 2 x 404.7 m2/s = 0.19 g/s
.
Approximately 0.19 g of APS is applied per second.
o . 19 q I sAPS xl. 4 mg 1m3 resmethrin = 1. 7 mg 1m3 APS
0.159 g/s resmethrin
The estimated air concentration of APS - 1.7 mg/mJ.
20
.
B. Estimation of Safe Level of Exposure
~ Toxicologists at Roussel Bio exposed 5 female rats and 5 male
rats to 5 mg/liter "ScourgeR 18% + 54%" for 4 hours (Roussel Bio A
and personal communicationI2). The formulation used for this study
contained 18% resmethrin, 54% piperonyl butoxide and 25% APS. At
140 minutes, one female rat displayed tremors. At 160 minutes one
male rat displayed tremors. Tremors disappeared after exposure.
No adverse effects or gross abnormalities were observed over the
following 14 days. This study suggests a LOAEL for acute exposure
of 5 mg/liter.
5 mg/liter = (5 mg/1000 cm3) (100 cm/m) 3 = 5000 mg/m3
Since resmethrin, piperonyl butoxide and the aromatic
petroleum solvent (APS) have low volatility, we assume that the
ratio of these ingredients in the air is the same as their ratio in
the liquid formulation.
(1) Resmethrin:
~
LOAELresmethrin - (5000 mg/m3) (0.18) = 900 mg/m3
Convert LOAEL (mg/liter) to LOAEL (mg/kg) (See Appendix C) :
Rat: (900 mg!m3) (0.223 m3!day) (day!24 hr) (4 hr) = 96 mg/kg
0.35 kg
LOAEL = 96 mg/kg
UFl = 10 for use of LOAEL instead of NOAEL
UF2 = 10 for extrapolation from animals to humans
UF3 = 10 for sensitive subpopulations
Since the study used the total formulation of scourgeR, which
contains piperonyl butoxide, the safety factor of 2 for piperonyl
butoxide will not be used to calculate the safe air concentration.
96 mq!kq = 0.096 mg/kg resmethrin over a 4 hour exposure
(10) (10) (10)
12Phone conversation with John de Prospo, Manager, Toxicology
Services, Roussel Bio, March 12, 1993.
~
21
96 mg/kg = 0.096 mg/kg resmethrin over a 4 hour exposure
(10) (10) (10)
.
The confidence in this estimated safe level is medium. There
is a limited data base, but the data concerns the total
formulation, which gives a better indication of toxicity than a
study that looks at the individual ingredients. The uncertainty
factor (1000) reflects the imprecision of the estimation. It is
intended as a protective factor in light of uncertainty.
Convert to a safe 4 hour concentration level for a child:
let X (mg/m3) = safe 4 hour concentration level for a child
breathing rate of a child = (16 m3/day) (day/24 hrs) = 0.67 m3/hr
rx mg/m31 (0.67 m3/hr) (4 hrs) = 0.096 mg/kg
(16 kg)
solve for X:
X (mg/m3) = (0.096 mo/kg) (16 kg) = 0.57 mg/m3
(d. 67m3 /hr) (4 hrs)
Convert to a safe 4 hour concentration level for an adult:
breathing rate of an adult = (20 m3/day) (day/24 hrs) = 0.83 m3/hr
(0 . 096 mo /kq) (70 ko) = 2.0 mg /m3
( 0 . 83m3 /hr) (4 hrs)
.
Note: These concentrations reflect the estimated air concentration
of resmethrin that could be safely inhaled for up to 4 hours. The
air concentration of resmethrin that could be safely inhaled for
only 30 minutes may be greater than these values. Due to the lack
of data, it was not possible to calculate a safe 30 minute exposure
level.
22
.
.
.
.
(2) Piperonyl Butoxide:
LOAELpB - (5000 mg/m3) (0.54) = 2700 mg/m3
LOAEL = 2700 mg/kg
UFl = 10 for use of LOAEL instead of NOAEL
UF2 = 10 for extrapolation from animals to humans
UF3 = 10 for sensitive subpopulations
2700 mg/kq
(10) (10) (10)
= 2.7 mg/kg over a 4 hour exposure
The confidence in this estimated safe level is medium. There
is a limited data base, but the data concerns the total
formulation, which gives a better indication of toxicity than a
study that looks at the individual ingredients. The uncertainty
factor (1000) reflects the imprecision of the estimation. It is
intended as a protective factor in light of uncertainty.
Convert to a safe 4 hour concentration level for a child:
let X (mg/m3) = safe 4 hour concentration level for a child
breathing rate of a child = (16 m3/day) (day/24 hrs) = 0.67 m3/hr
[X mq/m31 (0.67 m3/hr) (4 hrs) = 2.7 mg/kg
(16 kg)
solve for X:
X (mg/m3) = (2.7 mq/kg) (16 kq) = 16 mg/m3
( 0 . 67m3 /hr) (4 hrs)
Convert to a safe 4 hour concentration level for an adult:
breathing rate of an adult = (20 m3/day) (day/24 hrs) = 0.83 m3/hr
(2.7 mq/kq) (70 kg) = 57 mg/m3
(0.83 m3/hr) (4 hrs)
Note: These concentrations reflect the estimated air concentration
of piperonyl butoxide that could be safely inhaled for 4 hours or
less. The air concentration of piperonyl butoxide that could be
safely inhaled for only 30 minutes may be greater than these
values. Due to the lack of data, it was not possible to calculate
a safe 30 minute exposure level.
23
(3) Aromatic Petroleum Solvent (APS):
LOAELAPS - (5000 mg/m3) (0.25) = 1250 mg/m3
LOAEL = 1250 mg/kg
UF. = 10 for use of LOAEL instead of NOAEL
UF2 = 10 for extrapolation from animals to
UF3 = 10 for sensitive subpopulations
.
humans
1250 mq/kq
(10) (10) (10)
= 1.3 mg/kg APS over a 4 hour exposure
The confidence in this estimated safe level is medium. There
is a limited data base, but the data concerns the total
formulation, which gives a better indication of toxicity than a
study that looks at the individual ingredients. The uncertainty
factor (1000) reflects the imprecision of the estimation. It is
intended as a protective factor in light of uncertainty.
Convert to a safe 4 hour concentration level for a child:
let X (mg/m3) = safe 4 hour concentration level for a child
breathing rate of a child = (16 m3/day) (day/24 hrs) = 0.67 m3/hr
rx mg/m31 (0.67 m3/hr) (4 hrs) = 1.3 mg/kg
(16 kg)
.
solve for X:
X (mg/m3) = (1.3 mq/kq) (16 kg) = 7.8 mg/m3
(0.67 m3/hr) (4 hrs)
Convert to a safe 4 hour concentration level for an adult:
breathing rate of an adult = (20 m3/day) (day/24 hrs) = 0.83 m3/hr
(1.3 mg/kq) (70 kq) = 27 mg/m3
(0.83 m3/hr) (4 hrs)
Note: These concentrations reflect the estimated air concentration
of APS that could be safely inhaled for 4 hours or less. The air
concentration of APS that could be safely inhaled for only 30
minutes may be greater than these values. Due to the lack of data,
it was not possible to calculate a safe 30 minute exposure level.
24
.
.
.
.
,
C.
Summary and Conclusion for Inhalation Exposure to
Resmethrin and Aromatic Petroleum Solvent
Resmethrin (child)
Resmethrin (adult)
Piperonyl Butoxide
( child)
Piperonyl Butoxide
(adult)
APS (child)
APS (adult)
Estimated Safe
Air Concentration
(mg/m3)
0.57
2.0
16
Estimated
Air Concentration
(mg/m3)
1.4
1.4
4.0
57
4.0
7.8
27
1.7
1.7
Conclusion:
Brief inhalation exposure to ScourgeR should not pose a health
risk. Nevertheless, children should be prevented from having
prolonged inhalation exposure to scourgeR. For example, children
should not be permitted to follow the pesticide applicators as they
work.
The estimation of inhalation exposure incorporates assumptions
that should err on the side of protecting health. Due to the
uncertainties inherent in these calculations, the results should
not be considered as an absolute quantitation of exposure, but
rather as an indicator of potential health risk. All of the
uncertainties should be taken into consideration when examining the
results of these calculations.
There are two main sources of uncertainty in these
calculations. First, because no air monitoring data was available,
the air concentrations of resmethrin and APS were estimated using
a computer model. The United States Environmental Protection
Agency considers this computer model to be accurate within a factor
of 2 (personal communication with Dr. Gregory Pratt). Air
monitoring studies of scourgeR during and after treatment would
eliminate this source of uncertainty.
Second, due to the lack of toxicologic data, an accurate
estimate of a safe air concentration for a 30 minute exposure could
not be calculated. Only an air concentration that would be safe
for exposures up to 4 hours could be estimated. The air
concentration that would be safe for a only a 30 minute exposure
could be higher than the 4 hour concentrations.
25
Given these uncertainties, we cannot say whether inhalation of
ScourgeR poses a significant health risk. Since the calculations ~
all incorporate protective assumptions, it is likely that a brief
inhalation exposure to Scourge does not pose a health risk.
Nevertheless, children should be prevented from having prolonged
inhalation exposure to ScourgeR. For example, children should not
be permitted to follow the pesticide applicators as they work.
~
26
~
.
.
.
IV. Dermal Exposure to Resmethrin
Dermal exposure to resmethrin could occur through contact with
soil or foliage. The following estimates the dermal exposure to
resmethrin from soil or foliage for a 1-6 year old child and an
adult.
Due to the short half life of resmethrin, it is assumed that
significant exposure to resmethrin will not occur after the day of
application. Since there is a 10 day interval between treatments,
it is assumed that each day of exposure is independent. There~ore
a risk assessment is done for an acute (one day) exposure to
resmethrin.
Note: A table containing a sununary of the results, and a
conclusion appears at the end of this section in part (4).
(1) Dermal Reference Dose (RfD) for Resmethrin:
See Appendix B for the explanation and definition of a
reference dose (RfD) and a Ma~mum Daily Allowable Intake (MDA).
The World Health Organization's environmental health criteria
document for resmethrin cites a study on dermal toxicity in which
4 groups of 10 male New Zealand White rabbits were treated twice a
week for three weeks with 1) 0.247 mg/ml resmethrin applied over 1
ml of imitation sweat; 2) 0.247 mg/ml resmethrin applied without
sweat; 3) cotton cloth fixed to skin pretreated with 10 g of
technical grade resmethrin; or 4) untreated cotton cloth fixed over
skin pretreated with pyrax powder containing 1% resmethrin at a
rate of 1 g/kg body weight. Controls were used for each group. No
compound- related skin lesions were noted and dermal irritation
scores for resmethrin were no higher in the treated groups than for
controls. No significant changes were noted in rabbit body weight,
or the organ-to-body weight ratios of liver, lung, kidney, testes,
or spleen.
The results of this study are supported by an unpublished 21
day dermal rabbit study performed by Roussel Biol3. The Roussel
Bio study indicated a NOAEL greater than 1 g/kg/day. Therefore a
NOAEL of 1 g/kg/day is used to calculate the dermal RfD for
resmethrin.
13Personal communication: John De Prospo, Manager, Toxicology
Services, Roussel Bio Corporation, May 28, 1992, 201-628:7200.
27
Calculation of Dermal RfD
.
See Appendix B for an explanation of the use of a NOAEL and
uncertainty factors (UFs) to calculate an RfD.
NOAEL = 1 g/kg/day = 1000 mg/kg/day
UF! = 10 for interspecies extrapolation
UF2 = 10 for sensitive subpopulation
UF3 = 2 for piperonyl butoxide
RfD = 1000 mg/kq/day = 5.0 mg/kg/day.
(10) (10) (2)
The confidence in this RfD is medium. The results from the
Roussel Bio study support the study cited by the World Health
Organization. The RfD is medium because of the limited amount of
published data.
Note: This is an RfD for subchronic exposure. Due to lack of
adequate data, an acute RfD was not calculated. Using a subchronic
RfD to assess acute exposure is less accurate than using an acute
RfD, but provides a greater margin of safety.
Dermal RfD = 5.0 mg/kg/day
MDA.:hild = (5.0 mg/kg/day) (16 kg) = 80 mg/day
MD~dult = (5.0 mg/kg/day) (70 kg) = 350 mg/day
.
28
.
.
.
.
(2) Estimation of Dermal Exposure from Soil:
See Appendix D for an explanation of the equations and
assumptions used in this section. The estimated concentration of
resmethrin in soil is 2.6 x 10.s mg/g (see Appendix D) .
In takechild ==
(2.6 x 10's mg/q) (10.3 q/mq) (3160 cm2/dav) (1.45 mg/cm2)
( 16 kg)
== 7.4 x 10~ mg/kg/day
Daily Intakeehild == (7.4 x 10~ mg/kg/day) (16 kg) == 1.2 X 104 mg/day
Intakeadult =
(2.6 x 10.S mg/g) (10.3 g/mg) (8629 cm2/day) (1.45 mq/cm2)
( 70 kg)
== 4.7 x 10~ mg/kg/day
Daily Intakeadull == (4.7 x 10~ mg/kg/day) (70 kg) == 3.3 X 104 mg/day
(3) Estimation of Dermal Exoosure from Foliaqe:
See Appendix D for an explanation of the equations and
assumptions. Assume the concentration of resmethrin on foliage is
3.9 x 10-s mg/cm2 (see section I, part A above).
Intakechi1d == (3.9 x 10.s mg/cm2) (3160 cm2/dav)
(16 kg)
== 7.7 x 10~ mg/kg/day
Daily Intakeehild == (7.7 x 10.3 mg/kg/day) (16 kg) == 0.12 mg/day
Intake.dull == (3.9 x 10.s mg/cm2) (8620 cm2/day)
( 70 kg )
== 4.8 X 10.3 mg/kg/day
Daily Intake.dull == (4.8 x 10.3 mg/kg/day) (70 kg) == 0.34 mg/day
29
(4) SummarY and Conclusion for
Dermal Exposure to Resrnethrin
Child
Adult
MDA
rng/day
80
350
Estimated Daily Intake
Soil Foliage
rng/day rng/day
1.2 x 10-4 0.12
3.3 x 10-4 0.34
Conclusion:
Dermal exposure to resrnethrin should not pose a significant
risk of toxicity. The estimated intake of resrnethrin from dermal
contact to soil or foliage is well below the estimated MDA.
These calculations suggest that even if exposure to resmethrin
occurred every day for 50 days, the health risk would be
insignificant.
30
.
.
.
.
Risk Assessment of Punt™ 57-OS
I.
General Comments
puntTM 57-OS is applied by backpack to bushes and vegetation
around woods, where mosquitos rest during the day. The treatment
usually takes place in parks and other recreational areas.
Concentrated puntTM 57-OS contains 57% permethrin14, 37%
xylene range aromatic solvent, plus other inert ingredients. The
MMCD dilutes one part concentrated punt™ 57-OS in 9 parts soybean
oil or a food grade mineral oil, and applies the diluted material
at a rate of approximately 0.1 lb permethrin per acre.
According to the World Health Organization's environmental
health criteria document on permethrin, the half-life of permethrin
in soil is less than 28 days, and the half-life on plants is
approximately 10 days (WHO, 1990).
.
One source of uncertainty that runs throughout this risk
assessment concerns the potential difference in potency between the
permethrin used in toxicology studies and the permethrin contained
in punt™ 57-OS. Permethrin is usually a mixture of cis and trans
isomers. The cis isomer of permethrin is more toxic than the trans
isomer (Miyamoto, 1976; WHO, 1990). A mixture of cis and trans
isomers is less toxic than pure cis isomer, but is usually more
toxic than pure trans isomer. The World Health Organization's
environmental health criteria document cites a study showing that
a 80:20 cis:trans mixture is approximately 7 times as potent in
rats as a 20:80 cis:trans mixture. The 80:20 cis:trans mixture is
approximately twice as potent as a 50:50 mixture of the isomers
(WHO, 1990).
According to the label, punt™ 57-OS contains a minimum of 35%
of the cis isomer and a maximum of 65% of the trans isomer. Most
of the toxicology studies used in this risk assessment do not state
the ratio of the cis and trans isomers of permethrin used in the
experiments. Because of the limited information, we cannot be
certain that the potency of the permethrin used in the toxicolO~
studies is the same as that of the permethrin contained in Punt f
57-OS.
A second source of uncertair.t'/ cc::'::erns the potential of
permethrin to cause cancer in humans. permethrin has been tested
for carcinogenicity in both rats and mice. According to the United
States Environmental Protection Agency (USEPA), "Definite evidence
.
14The chemical name for permethrin is (3-phenoxyphenyl)
methyl (+/-) cis/trans 3-(2,2-dichloroethenyl) 2,2-dimethyl,
cyclopropanecarboxylate.
31
of oncogenicity was not observed in any of the [three] long-term
rat studies (Federal Reqister, 1982)." The World Health .
Organization concluded that, "No evidence of oncogenicity was
observed in the rat studies (WHO, 1990).11
In contrast to the rat studies, three long term mouse studies
suggest that permethrin might be carcinogenic. One study showed an
increase in lung adenomas in male mice at the highest experimental
dose. According to the World Health Organization, it was not clear
whether this increase was related to permethrin ingestion (WHO,
1990). A second study showed an increased incidence of bronchio-
alveolar adenomas in female mice only. According to the World
Health Organization, the Federal Insecticide, Fungicide and
Rodenticide Act (FIFRA) Scientific Advisory Panel expressed some
doubt about the conduct of this study (WHO, 1990). A third study
showed a dose-related increase in lung tumors in female mice (WHO,
1990). The significance of lung tumors in mice for predicting
carcinogenic potential in humans is questionable (Federal Register,
1982). According to the USEPA, liThe biological evidence produced
by long-term mouse and rat studies, and other toxicological studies
leads the EPA to conclude, based on the Agency risk assessment,
that the likelihood of oncogenic effects in humans from exposure to
low levels of permethrin is non-existent or extremely low (Federal
Register, 1982)."
The Material Safety Data Sheet for punt™ 57-OS lists
permethrin and a xylene range aromatic solvent under hazardous ..
ingredients. This risk assessment evaluates the oral, inhalation
and dermal routes of exposure to permethrin. Due to lack of
available data, no risk assessment is done for the xylene range
aromatic solvent or the inert ingredients.
The number of times the MMCD treats a given area differs
depending on the type of activity that takes place there. Some
areas are only treated once for a special event, such as a parade
or festival. The MMCD may treat high use parks up to 5 times a
season at 10 approximately day intervals.
To be protective, this risk assessment uses an exposure
scenario for a high use park. In other words, it assumes that
punt™ 57-OS is applied for 50 days during the summer (5
applications at 10 day intervals) and that a child and an adult use
the park every day for the 50 day treatment period.
The following calculations incorporate assumptions and
uncertainty factors that should err on the side of protecting
public health. The scenarios assume near maximum exposure in order
to protect sensitive individuals and provide an adequate margin of
safety for average citizens.
32
.
.
.
.
II. Ingestion Exposure
Exposure to permethrin could occur through incidental
ingestion of contaminated soil and contaminated vegetation. For
example, a child might place his/her hands in his/her mouth during
play at a park. There is also a chance of exposure through
ingestion of unwashed homegrown vegetables. For example, pesticide
application to residential neighborhoods within a quarter mile
radius of a park or recreation area could result in the inadvertent
treatment of gardens.
Exposure to permethrin through ingestion of soil and homegrown
vegetables is estimated for a 1-6 year old child and an adult. The
general equations for ingestion exposure and the assumptions that
go into the calculation of ingestion exposure are given in Appendix
A.
Note: A table containing a summary of the results and a conclusion
appears at the end of this section in part E.
A. Estimation of the amount of oermethrin
in and on soil and vegetation:
(Information
0.1 lb of permethrin is applied per acre.
provided by the MMCD) .
0.1 lb/acre x 450 g/lb = 45 g/acre
45 g/acre x acre/43,560 ft2 = 0.001 g/ft2 x 1000 mg/g = 1 mg/ft2
1 mg/ft2 x ft2/929 cm2 = 1.1 x 10-3 mg/cm2
- 1.1 x 10~ mg/cm1 permethrin deposited on soil and vegetation
- 7.3 x 104 mg of permethrin per gram of soil (See Appendix A)
33
B. Oral Reference Dose (RfD):
.
Refer to Appendix B for the definition and calculation of a
Reference Dose and Maximum Daily Allowable Intake (MDA).
The World Health Organization's environmental health criteria
document on perrnethrin summarizes a number of subchronic studies,
reproductive studies, and developmental studies (WHO, 1990). One
90 day rat study suggests a LOAEL of 100 mg/kg/day and a NOAEL of
20 mg/kg/day. The results of another 90 rat study suggests a LOAEL
of 270 mg/kg/day and a NOAEL of 85 mg/kg/day. A 3 month dog study
suggests a LOAEL of 50 mg/kg/day for liver effects and a NOAEL of
5 mg/kg/day. In addition, a teratogenicity study in rats suggests
a LOAEL of 50 mg/kg/day and a NOAEL of 20 mg/kg/day. As an extra
measure of protection, the lowest NOAEL of 5 mg/kg/day from the 3
month dog study is used to calculate the RfD. This NOAEL should be
protective for both teratogenic effects and liver damage.
NOAEL = 5 mg/kg/day
UFl = 10 for interspecies extrapolation
UF2 = 10 for sensitive subpopulation
RfD = 5 mq/kg/day = 5.0 x 10-2 mg/kg/day.
(10) (10)
The confidence in this RfD is medium. The studies cited by
the World Health Organization document indicate that this RfD is .
protective for both teratogenic effects and general subchronic
toxicity.
Oral RfD = 5 x 10~ mg/kg/day
MD~hild = (5 X 10-2 mg/kg/day) (16 kg) = 0.8 mg/day
MD~dult = (5 X 10-2 mg/kg/day) (70 kg) = 3.5 mg/day
34
.
.
C. Estimation- of Exoosure throuqh Soil Ingestion:
Refer to Appendix A for an explanation of equations and
assumptions.
Soil ingestion for a child:
(7.3 x 104 mg/g) (10-3 g/mq) (200 mq/day)
(16 kg)
Intake = 9.1 x 10~ mg/kg/day
Daily Intakec~d = (9.1 x 10~ mg/kg/day) (16 kg) = 1.5 x 10~ mg/day
Soil ingestion for an adult:
(7.3 x 104 mg/g) (10.3 g/mq) (100 mg/day)
(70 kg)
Intake = 1.0 X 10.6 mg/kg/day
.
Daily Intakeadult = (1. 0 x 10.6 mg/kg/day) (70 kg) = 7.0 x 10's mg/day
D. Inaestion of Homeqrown Veqetables:
Assume 1.1 x 10.3 mg/cm2 permethrin is deposited on the
of the vegetables (see A above). This factor is used to
the MDA for permethrin from mg/day to cm2 vegetable
area/day:
surface
convert
surface
MDAc~d = (5 X 10.2 m?/kg/day) (16 kg) / (1.1 X 10.3 mg/cm2)
= 730 em /day
MD~dult = (5 X 10.2 m~/kg/day) (70 kg) / (1.1 X 10.3 mg/cm2)
= 3200 cm:/day
. 35
E. SummarY and Conclusion for
Inqestion Exoosure to Perrnethrin
.
Soil Ingestion
Child
Adult
MDA
(mg/day)
0.8
3.5
Daily Intake
(mg/day)
1.5 x 10-4
7.0 X 10.5
Ingestion of Vegetation
MDAchild
MD~dult
II
II
perrnethrin
730 cm2/day
3200 cm2/day
For point of reference, an 8.5 n x 11" piece of paper is
approximately 603 cm2. A tomato that is 8 cm high (appr. 3 inches),
assuming that it is a sphere, would have a surface area of
approximately 200 cm2. A green pepper that is 13 cm high (appro 5
inches), assuming that it is a sphere, would have a surface area of
approximately 530 cm2. A lettuce leaf that is 5 cm by 15 cm (appr.
2" x 6") would have a surface area of 75 cm2.
.
Conclusion:
Exposure to permethrin through
negligible. The estimated exposure to
ingestion is well below the estimated
intake of perrnethrin.
soil ingestion appears
perrnethrin through soil
maximum daily allowable
Since perrnethrin has a half life of 10 days on plants, the
concentration of perrnethrin will decrease over the 10 day interval.
The MDAs for ingestion of foliage are protective, since they are
calculated assuming a constant concentration of perrnethrin on
vegetation over a 10 day. interval. Nevertheless, homegrown
vegetables should be washed before they are eaten and consumption
of other foliage, especially by children should be avoided.
36
.
.
.
.
.
III. Inhalation Exposure to Per.methrin
Pun t TM
In contrast
the wind,
vegetation.
57-OS is applied by backpack directly to vegetation.
to ScourgeR, which is applied so that it disperses with
punt™ 57-OS is applied so that it deposits on
Currently, adequate air monitoring data for PuntTM 57-OS is
not available. Therefore, Dr. Gregory Pratt of the Minnesota
Pollution Control Agency estimated the air concentration for
permethrin using a computer model that incorporates data on
concentration, dispersal rate and particle size.
puntTM 57-OS should settle out of the air faster than ScourgeR
because puntTM is applied in larger particles (AMCAB, 1952). The
MMCD estimates that ScourgeR is dispersed from the point of
treatment by 30 minutesls.
Punt™ 57-OS is applied approximately five times per year at
ten day intervals. Inhalation exposure to permethrin is estimated
for a 1-6 year old child and an adult exposed 5 times per year for
30 minutes. Because Punt TM 57- OS disperses so rapidly from the
air, inhalation is calculated as an acute (short term) exposure.
The general equations and assumptions used for these calculations
are found in Appendix C.
Note: A table containing a summary of the results, and a
conclusion appears at the end of this section in part (4).
ISLetters from the MMCD to the Minnesota Department of Health
dated November 30, 1992 and February 12, 1993. Letter from Roussel
Uclaf to the MMCD dated February 16, 1993.
37
(l) Estimation of Air Concentration:
.
Air concentration modeling was performed by Dr. Gregory Pratt,
Program Development Unit, Division of Air Analysis, Minnesota
Pollution Control Agency. See attachment 2.
Assumptions for air concentration modeling for permethrin:
a. 0.0945 g permethrin sprayed per second (calculated from
information provided by the MMCD)
b. 8.36 m2 is covered per second (calculated from information
provided by the MMCD)
c. Treatment is done at a height of 6 feet (information provided
by the MMCD)
d. Low winds (6.6 - 8.8 MPH)
e. The model incorporates the size and settling velocity of the
pesticide particles and assumes that permethrin is
not volatile.
f. Air concentration at a 5 foot breathing height of a person
standing approximately 20 meters downwind of the treatment.
This is a conservative exposure scenario, assuming exposure
occurs at the time of treatment, with minimal dispersal of .
pesticide.
g. Assume the concentration of permethrin is the same at the
breathing height of a child as it is at the breathing height
of an adult.
This model estimates that within a minute of application, the air
concentration of permethrin would be approximately 4.1 mg/m3.
38
.
.
.
.
(2) Estimation of a Safe Level of Exposure
to Perrnethrin throuqh Inhalation:
The World Health Organization's environmental health criteria
document on perrnethrin cites a subchronic inhalation study in which
rats were exposed to 125, 250 or 500 mg/m3 technical grade
perrnethrin for 6 hours per day, 5 days per week for 13 weeks (WHO,
1990) . This study suggests a NOAEL of 250 mg/m3 for subchronic
exposure. This NOAEL will be considered to calculate a safe air
concentration for a six hour exposure. This is protective, since
the rats in the study were repeatedly exposed to perrnethrin.
Convert NOAEL (mg/m3) to NOAEL '(mg/kg) (See Appendix C):
Rat: (250 mg/m3) (0.223 m3/day) (dav/24 hr) (6 hr) = 40 mg/kg
0.35 kg
NOAEL = 40 mg/kg.
UF\ = 10 for extrapolation from animals to humans
UF2 = 10 for sensitive subpopulations
Estimated Safe Intake =
40 mq/kq
(10) (10)
= 0.4 mg/kg over 6 hours
The confidence in estimated safe intake is medium. It should
be noted that this safe intake is estimated from a subchronic
exposure and not an acute exposure. This adds a measure of
protection.
39
Convert to a safe 6 hour concentration level for a child:
let X (mg/m3) = safe 6 hour concentration level for a child
breathing rate of a child = (16 m3/day) (day/24 hrs) = 0.67 m3/hr
rx mg/m31 (0.67 m3/hr) (6 hrsl = 0.4 mg/kg
(16 kg)
solve for X:
X (mg/m3) = (0.4 mq/kq) (16 kq) = 1.6 mg/m3
(0. 67m3 /hr) (6 hrs)
Convert to a saOfe 6 hour concentration level for an adult:
breathing rate of an adult = (20 m3/day) (day/24 hrs) = 0.83 m3/hr
(0.4 mo/kg) (70 kq) = 5.6 mg/m3
(0.83 m3/hr) (6 hrs)
Note: These concentrations reflect the estimated air concentration
of perrnethrin that could be safely inhaled for up to 6 hours. The
air concentration of perrnethrin that could be safely inhaled for
only 30 minutes may be greater than these values. Due to the lack
of data, it was not possible to calculate a safe 30 minute exposure
level.
40
.
.
.
.
.
.
(3)
Summary and Conclusion for
Inhalation Exposure to Permethrin
Permethrin (child)
Permethrin (adult)
Estimated Safe
air concentration
( mg I m3 )
1.6
5.6
Estimated
air concentration
(mg 1m3)
4.1
4.1
Conclusion:
Brief inhalation exposure to Punt™ 57-OS should not pose a
heal th risk. Nevertheless, children should be prevented from
having prolonged inhalation exposure to punt™ 57-OS. For example,
children should not be permitted to follow the pesticide
applicators as they work.
The estimation of inhalation exposure incorporates assumptions
that should err on the side of protecting health. Due to the
uncertainties inherent in these calculations, the results should
not be considered as a precise quantitation of exposure, but rather
as an indicator of potential health risk. All of the uncertainties
should be taken into consideration when examining the results of
these calculations.
There are two main sources of uncertainty in these
calculations. First, because no air monitoring data was available,
the air concentration of permethrin was estimated using a computer
model. The United States Environmental Protection Agency considers
this computer model to be accurate within a factor of 2 (personal
communication with Dr. Gregory Pratt). Air monitoring data would
eliminate this source of uncertainty.
Second, due to the lack of toxicologic data, an accurate
estimate of a safe air concentration for a 30 minute exposure could
not be calculated. Only an air concentration that would be safe
for exposures up to 6 hours could be estimated. The air
concentration that would be safe for only a 30 minute exposure
could be higher than the 6 hour concentration. Because adequate
data were not available, we were unable to do an inhalation risk
assessment on the xylene range aromatic solvent in punt™ 57-OS.
Given these uncertainties it is difficult to determine whether
inhalation of Punt™ 57-OS poses a significant health risk. Since
the calculations all incorporate protective assumptions, it is
likely that a brief inhalation exposure to punt™ 57-OS does not
pose a health risk. Nevertheless, children should be prevented
from having prolonged inhalation exposure to puntTM 57-OS. For
example, children should not be permitted to follow the pesticide
applicators as they work.
41
IV. Dermal Exposure to Permethrin
Dermal exposure to permethrin could occur from contact with .
soil or foliage. The following estimates dermal exposure from
contact with soil or foliage for a 1-6 year old child and an adult.
Note: A table containing a summary of the results, and a
conclusion appears at the end of this. section in part (4).
(1) Dermal Reference Dose (RfD):
See Appendix B for an explanation and definition of a
reference dose (RfD).
Medical studies suggest that permethrin has low dermal
toxicity. For example, permethrin creams are being considered as
a treatment for humans with scabies and head lice (Hogan, et al.,
1991; Bowerman, et al., 1987).
The World Health Organization's environmental health criteria
document for permethrin cites a study of dermal toxicity in which
0, 0.1, 0.32 or 1.0 g/kg body weight of technical grade permethrin
was applied to the clipped skin of New Zealand White rabbits each
day for 21 consecutive days (WHO, 1990). Blood samples were drawn
weekly for clinical chemistry samples, and various tissues and
organs were examined for microscopic lesions. Aside from moderate
skin irritation, no significant changes in body weight, organ
weight, or clinical chemistry were evident. No compound related .
skin lesions were noted. This study suggests a NOAEL of 1.0
g/kg/day, for toxicity, and a LOAEL of 0.1 g/kg/day (100 mg/kg/day)
for irritation.
The results of the rabbit study cited by the World Health
Organization are supported by two studies carried out with human
volunteers. In one study, 659 patients, (92% under 20 old, and 39%
male, 61% female) were treated once with a 1% permethrin (25:75,
cis:trans) creme rinse hair conditioner (Bowerman et al., 1987).
A median value of 50 rnls of 1% rinse was applied to hair and scalp
and then rinsed. Patients were observed 30-60 minutes, 24 hours,
7 days, and 14 days after treatment. They were evaluated for
erythema, edema, rash, itching, burning/stinging, pain, numbness
and tingling. 1.2% of the patients reported dermal reactions, such
as itching or erythema. These reactions were mild and transient.
There were no reports of neurologic effects or allergic
conjunctivitis. Assuming that the youngest child weighed 16 kg and
the oldest, 70 kg, and a median dose of 0.5 g (50 rnls x 1 g/100 rnls
= 0.5 g), the dose of permethrin would range between approximately
7 mg/kg and 31 mg/kg. In addition, the World Health Organization's
environmental health criteria document for permethrin cites a study
in which 10 male volunteers wore clothes impregnated with
permethrin for 48 hours, resulting in a dose of 0.054 mg/kg/day.
There were no complaints of irritation.
42
.
.
.
.
Calculation of ~ermal RfD for Toxicity:
See Appendix B for the icalculation of an RfD and use of a
NOAEL, a LOAEL, and uncertai~ty factors (U!s).
NOAEL = 1 g/kg/day = 1000 mg~kg/day
UF\ = 10 for extrapolation fr~m animal to human
UF2 = 10 for sensitive subpopulations
RfD = 1000 g/kg/day= 10 mg!ikg/day
(10) (10)
The confidence in the iRfD for toxicity is medium. The
uncertainties include no LOAEIL for toxicity from the study and no
factor to account for the d~fference between the absorption of
permethrin in rabbits and humans.
RfDtox = 10 mg /kg / day
MD~hild = (10 mg/kg/day) (1i6 kg) = 160 mg/day
MD~dult = (10 mg/kg/day) (710 kg) = 700 mg/day
Calculation of De~l RfD for Irritation:
LOAEL = 100 mg/kg/day
UF\ = 10 for LOAEL
UF2 = 10 for extrapolation fr~m animal to human
UF3 = 10 for sensitive subpopulations
RfD = 100 mg/kq/day = 0.1 mg/kg/day
(10) (10) (10)
The confidence in the Rf~ for irritation is medium. Although
the studies indicate that permethrin is not a strong irritant, the
human studies are limited. T~e large uncertainty factor reflects
the imprecision of the RfD. ! It is intended to be a protective
factor in light of uncertainty.
RfD~ = 0.1 mg/kg/day
MD~hild = (0.1 mg/kg/day) (t1.6 kg) = 1.6 mg/day
MD~dult = (0.1 mg/kg/day) (70 kg) = 7.0 mg/day
43
(2) Estimation of Dermal EX90sure from Soil:
See Appendix D for an explanation of the equations and .
assumptions for dermal exposure. Assume that the concentration of
permethrin in the soil is 7.3 x 104 mg/g (see Appendix D).
Dermal Exposure from Soil for a Child:
(7.3 x 104 mg/g) (10.3 g/mg) (3160 cm2/day) (1.45 mq/cm2)
(16 kg)
= 2.1 X 104 mg/kg/day
Daily Intakec~d = (2.1 x 104 mg/kg/day) (16 kg) = 3.4 x 10~ mg/day
Dermal Exposure from Soil for an Adult:
(7.3 x 104 mq/q) (10.3 g/mq) (8620 cm2/dav) (1.45 mq/cm2)
( 7 0 kg)
= 1.3 X 104 mg/kg/day
Daily Intake~dult = (1.3 X 104 mg/kg/day) (70 kg) = 9.1 X 10-3 mg/day
(3) Estimation of Dermal Exposure from Foliage:
.
See Appendix D for an explanation of the equations and
assumptions for dermal exposure. Assume that the concentration of
permethrin deposited on vegetation is 1.1 x 10-3 mg/cm2 (see section
I, part A above) .
Dermal Exposure from Foliage for a Child:
(1.1 X 10-3 mq/cm2) (3160 cm2/day) = 0.22 mg/kg/day
(16 kg)
Daily Intakec~d = (0.22 mg/kg/day) (16 kg) = 3.5 mg/day
Dermal Exposure from Foliage for an Adult:
(1.1 X 10-3 mg/cm2) (8620 cm2/dav) = 0.14 mg/kg/day
( 70 kg)
Daily Intake~dult = (0.14 mg/kg/day) (70 kg) = 9.8 mg/day
44
.
.
.
.
Child
Adult
(4 ) Summary and Conclusion for
Dermal Exposure to Permethrin:
Estimated Daily Intake
MD~ox MDAm- Soil Foliage
(mg/day) (mg/day) (mg/day) (mg/day)
160 1.6 3.4 x 10-3 3.5
700 7.0 9.1 X 10-3 9.8
Conclusion:
Dermal exposure to permethrin does not pose a significant risk
of toxic effects. The estimation of intake of permethrin from
dermal contact with soil or foliage is below the estimated dermal
RfD for toxicity.
The estimated intake of permethrin from dermal contact with
soil exceeds the MDA for irritation. The calculation for exposure
to the foliage incorporates near worst case assumptions. For
example, it assumes that hands, arms and legs are covered with the
same concentration of permethrin that is sprayed on the foliage.
In other words, the assumption is that there is 100% transfer of
permethrin from foliage to skin. Because no data was available on
how much permethrin would actually be transferred from foliage to
skin, 100% transfer was assumed. It is likely that transfer of
permethrin from foliage to skin is below 100%. This is an
extremely protective assumption. In addition, these calculations
assume that exposure occurs every day for 50 days. Occasionally
brushing up against treated foliage should not result in such
extensive exposure. Finally, since the half life of permethrin in
plants is 10 days, the concentration of permethrin will decrease
over the 10 day intervals. These calculations do not take that
into consideration. Therefore it is unlikely that incidental
dermal exposure to permethrin would be irritating.
45
References
ACGIH, 1990. Threshold Limit Values for Chemical Substances and .
Physical Agents and Biological Exposure Indices. American
Conference of Governmental Industrial Hygienists, 1990-1991.
AMCAB, 1952. Ground Water Equioment and Insecticide for Mosauito
Control. American Mosquito Control Association Bulletin, No.2,
March 1952, p.18.
Bowerman, J.G., Gomez, M. P., Austin, R.D. and Wold, D.E. 1987.
Comparative study of permethrin 1% creme rinse and lindane shampoo
for the treatment of head lice. Pediatr. Infect. Dis. J.
6(3) :252-255.
Calabrese,
Assessment.
E.J. and Kenyon, E.M. 1991. Air Toxics and Risk
Lewis Publishers, Chelsea, Michigan. pp.609 - 613.
Federal Reqister, 1982. Tolerances and Exemptions From Tolerances
for pesticide Chemicals in or on Raw Agricultural Commodities;
Permethrin. USEPA, Federal Register, vol. 47, No. 198, p. 45009.
Flannigan, S.A., Tucker, S.B., Key, M.M., Ross, C.E., Fairchild II,
E.J., Grimes, B.A. and Harrist, R.B. 1985. Synthetic pyrethroid
insecticides: a dermatological evaluation. Brit. J. Ind. Med.
42:363-372.
Hogan, D.J., Schachner, L, Tanglertsampan, C. 1991. Diagnosis and
treatment of childhood scabies and pediculosis. Pediatric Clinics .
of North America. 38(4) :941-957.
MMCD, 1987. Metropolitan Mosquito Control District Supplemental
Environmental Impact Statement.
Miyamoto, J. 1976.
synthetic pyrethroids.
Degradation. metabolism and toxicity of
Env. Health Per. 14:15-28.
MSDS, Exxon. Material Safety Data Sheet for Aromatic 150.
MSDS, Vectec, Inc. Material Safety Data Sheet for Punt 57-OS.
Vectec, Incorporated, Orlando, Florida.
Roussel Bio A. Roussel Bio Corporation brochure on ScourgeR.
Roussel Bio B. Roussel Bio Corporation Technical Information Sheet
on Piperonyl Butoxide.
Sarles, M.P., Dove, W.E., and Moore, D.H. 1949. Acute toxicity
and irritation tests on animals with the new insecticide. piperonyl
butoxide. Amer. J. Trop. Med. 29:151-166.
46
.
.
.
.
Sarles, M.P. and vandegrift, W.B. 1952. Chronic oral toxicity and
related studies on animals with the insecticide and oyrethrum
synerqist. piperonyl butoxide. Am. J. Trop. Med. 1:862-883.
USEPA, 1987. The Risk Assessment Guidelines of 1986. United
States Environmental Protection Agency, Office of Health and
Environmental Assessment, Washington, D.C. 20460. August 1987,
page 1-12.
USEPA, 1989. Risk Assessment Guidance for Superfund Volume I,
Human Health Evaluation Manual (Part A). United States
Environmental Protection Agency. Washington, DC.
USEPA, 1989a. Exposure Factors Handbook. Exposure Assessment
Group, Office of Health and Environmental Assessment, U.S.
Environmental Protection Agency, Washington, DC.
USEPA, 1990a. Risk Assessment, Management and Communication of
Drinking Water Contamination. United States Environmental
Protection Agency, Washington, D.C.
USEPA, 1990b. Methodology for Assessing Health
with Indirect Exposure to Combustor Emissions.
Health and Environmental Assessment, Washington,
11.
Risks Associated
USEPA, Office of
DC. p. 4-10, 4-
USEPA, 1990c. Interim Methods for Develooment of Inhalation
Reference Concentrations (DRAFT). United States Environmental
Protection Agency, Office of Research and Development, Washington,
D.C.
USEPA, 1992a. IRIS file for Permethrin.
USEPA, 1992b. IRIS file for Resmethrin.
WHO. 1990. Environmental Health Criteria 94. Permethrin. World
Health Organization. Geneva.
WHO. 1989. Environmental Health Criteria 92. Resmethrin. World
Health Organization. Geneva.
47
Appendix A
Calculation of Soil Ingestion
.
Intake (mg/kg/day) = CS x CF x IR x FI x EF
BW x AT
Daily Intake (mg/day) = (Intake mg/kg/day) (BW kg)
CS = Concentration of Contaminant in Soil (mg/g)
CF = Unit Conversion Factor (10-3 g/mg)
IR = Ingestion Rate (mg soil/day)
FI = Fraction Ingested from Contaminated Source
EF = Exposure Frequency (days of exposure during treatment period)
BW = Body Weight (kg)
AT Averaging Time (days)
(number of days over which exposure is averaged)
Note: This equation is consistent with the equation used by the .
USEPA for exposure assessments at Superfund sites (USEPA, 1989).
Continued on following page.
:
48
.
Appendix A continued
Assumptions for the Calculation
of Soil Ingestion:
1. Mixing level of soil is 1 cm (USEPA, 1990b). This is
protective, since it assumes minimal dilution of the
contaminant. Volume = (area) (height) = (cm2) (cm) = cm3. To
estimate the concentration of the contaminant in the soil, the
amount of the contaminant per unit of area (mg/cm2) is divided
by the depth of the soil (mixing level of 1 em) to give mg / em3 .
.
2. Density of soil is 1.5 g/cm3. Soil densities range from 0.93-
1.84 g/em3 (USEPA, 1990b). 1.5 g/em3 is used as a default
value when the actual soil density is not known (USEPA, 1990b).
3. CS = (mg contaminant/g soil) = (mg eontaminant/em3) (enr/l.5 g)
CS (Resmethrin) = (3.9 X 10-5 mg/ em3) (em3 /1. 5 g) = 2.6 X 10-5 mg/g
CS(Piperonyl = (1.1 x 10'" mg/em3) (em3/1.5 g) = 7.3 X 10.5 mg/g
butoxide)
CS (Permethrin) = (1.1 x 10-3 mg/em3) (cm3/1.5 g) = 7.3 X 10'" mg/g
4. IR = 200 mg soil/day for 1-6 year aIds (USEPA, 1989).
5. IR = 100 mg soil/day soil for those older than 6 (USEPA, 1989).
6. FI = 1
.
8. EF 1 day for resmethrin. Resmethrin has a very short half
life and therefore should not persist in soil between
treatments. This assumes that each day of exposure is
independent.
EF = 50 days for piperonyl butoxide. Assume that piperonyl
butoxide persists in the soil for the 10 days between
treatments and that soil is ingested every day for the
approximately 50 days adult control occurs (5 treatments
at 10 day intervals).
EF = 50 days for permethrin. Assume that permethrin persists
in the soil between treatments and that soil is ingested
every day for the approximately 50 days adult control
occurs (5 treatments at 10 day intervals) .
11. BW = 16 kg median weight for 1-6 year aIds (USEPA, 1989)
12. BW = 70 kg for adult (USEPA, 1989)
13. AT = 1 day for resmethrin (assumes each day of exposure is
independent)
AT = 50 days for permethrin and piperonyl butoxide
(5 treatments at 10 day intervals)
Continued on following page.
.
49
Appendix A continued
Calculation of Soil Inaestion
Intake (mg/kg/day) = CS x CF x IR x FI x EF
BW x AT
When the constants listed on the previous page are used, the above
equation reduces to:
Intakechild (mg/kg/day) - (CS ma/a) (10.3 a/ma) (200 ma/day)
16 kg
Intake~dult (mg/kg/day) - (CS ma /a) (10.3 a /ma) (100 ma /day)
70 kg
50
.
.
.
Appendix B
.
Reference Dose (RfD)
Reference Dose (RfD): The USEPA defines a reference dose as,
"...an estimate of the amount of a chemical that a person can be
exposed to on a daily basis that is not anticipated to cause
adverse systemic health effects over the person's lifetime" (USEPA,
1990a); In other words, daily exposure to a substance at its
reference dose, even for a lifetime, should not result in toxic
effects. The reference dose is usually expressed in units of
milligrams of a substance per kilogram of body weight per day
(mg/kg/day) . The USEPA calculates a reference dose using the
equation shown below:
RfD = (NOAEL or LOAEL mq/kq/dav)
Uncertainty Factor
A. NOAEL stands for no-observed-adverse-effect-level.
This number is usually derived from experimental animal
data and reflects the highest dose at which no harmful
effects of the agent are seen. LOAEL, the lowest-
observed-adverse-effect-level, is the lowest dose at
which harmful effects are noted. The use of a NOAEL or
a LOAEL depends on the available data. Both the NOAEL
and LOAEL are expressed in units of milligrams of the
chemical per kilogram of body weight per day (mg/kg/day).
.
B. The uncertainty factor results from multiplying
numbers which account for potential sources of
uncertainty in the data. For example, a factor of 10 is
included when animal data are used to derive values that
are applied to human health. Another factor of 10 is
incorporated to consider that some members of the
population may be more sensitive to a chemical than
others. These two common sources of uncertainty would
result in an uncertainty factor of 100 (10 x 10).
Numbers reflecting other sources of uncertainty, which
can include the quality of data, and the use of a LOAEL
instead of a NOAEL, can also contribute to the
uncertainty factor. A large uncertainty factor indicates
imprecision, but is a means of being protective in light
of uncertainty. .
Note: The RfDs calculated for this risk assessment are subchronic
or acute RfDs. For this purpose the definition of RfD is modified
so that a subchronic RfD reflects the safe dose of a substance that
can be ingested daily for a less than lifetime exposure (in this
case a 50 days) and an acute RfD reflects the safe dose of a
substance that can be ingested for a short term exposure (in this
case 1 day or less) .
.
Continued on following page.
51
Appendix B continued
Maximum Daily Allowable Intake (MDA)
MDA = mg of substance that can be safely consumed each day
MDA = (RfD mg/kg/day) (body weight kg) = mg/day
MDA for Ingestion of Homegrown Vegetables
The MDA for homegrown vegetables is expressed in terms of the
surface area (cm2) of the vegetables that can be consumed each day.
To convert the MDA from mg/day to cm2/day, the MDA is divided by the
amount of the substance deposited on the vegetables (mg/cm2):
MDA.,cg ( cm2 / day) =
MDA (mg/dav)
deposition (mg/cm2)
= (RfD mg/kg/dav) (BW kq)
deposition (mg/cm2)
Standard body weights recommended by the USEPA for exposure
assessments at Superfund sites (USEPA, 1989):
1-6 year old child - 16 kg
Adult - 70 kg
S2
.
.
.
.
.
.
Appendix C
Adjusting Animal Inhalation Data for Application to Humans
(Calabrese and Kenyon, 1991)
Acute Exposure
1. Convert NOAEL or LOAEL from mg/m3 to mg/kg body weight.
(NOAEL mqlm3) (IR m3/dav) (24 hr/dav) (ET hrs)
BW kg
IR = inhalation rate (mg/m3)
ET = exposure time (hours)
BW = body weight (kg)
Assumptions for Conversion (Calabrese and Kenyon, 1991, p. 612)
IR~t 0.223 m3/day
BW~t = 0.35 kg
I RChild = 16 m3/day
BWchild = 16 kg
IR~dult
BW~dult
20 m3/day
= 70 kg
2.
Estimate safe exposure level by dividing the adjusted NOAEL or
LOAEL by uncertainty factors as described in Appendix B.
53
Appendix D Calculation of Dermal Exposure from Soil (USEPA, 1989)
Intake (mg/kg/day) = CS x CF x SA x AF x ABS x EF
BW x AT
.
Daily Intake (mg/day) = (Intake mg/kg/day) (BW kg)
CS =
CF =
SA =
AF =
ABS =
EF =
BW =
AT =
chemical concentration in soil (mg/g)
conversion factor (10.3 g/mg)
surface area available for contact (cm2/event)
soil to skin adherence factor (mg/cm2)
absorption factor
exposure frequency (days)
body weight (kg)
averaging time (days over which exposure is averaged)
Assumptions:
1. Mixing level of soil is 1 cm (USEPA, 1990b). This is a
protective number, assuming minimal dilution of the
contaminant (see Appendix A) .
2. Density of soil is 1.5 g/cm3. Soil densities range from
0.93 - 1.84 g/cm3 (USEPA, 1990b). 1.5 g/cm3 is used as a
default value when the actual soil density is not known
(USEPA, 1990b).
3. CS = (mg/cm~) (l/cm) (cm3/1.5 g) .
CS(Resmethrin) = (3.9 x 10.5 mg/cm3) (cm3/1.5 g) = 2.6 x 10.Smg/g
CS(Permethrin) = (1.1 x 10.3 mg/cm3) (cm3/1.5 g) = 7.3 x 10-4mg/g
4.
SA = 3160 cm~/day for arms, hands and legs of a child
SA = 8620 cm~/day for arms, hands and legs of an adult
(USEPA, 1989)
AF = 1 . 45 mg / cm2 This is the adherence factor for commercial
potting soil (USEPA, 1989) .
5 .
6. ABS = 1 This is very protective, since it assumes that all
of the substance is absorbed through the skin.
7. EF = 1 day for resmethrin (see Appendix A)
EF = 50 days for permethrin (see Appendix A)
9. BW = 16 kg for a child 1-6 years old, 70 kg for an adult
10. AT = 1 day for resmethrin (see Appendix A)
AT = 50 days for permethrin (see Appendix A)
Note: This equation is consistent with the equation used by the
USEPA for exposure assessments at Superfund sites (USEPA, 1989).
54
.
Appendix D continued
~ Calculation of Dermal Exposure from Foliage
Intake (mg/kg/day) = CS x SA x ABS x EF
BW x AT
Daily Intake (mg/day) = (Intake mg/kg/day) (BW kg)
CS
SA
ABS=
EF
BW
AT
= chemical concentration on surface of foliage (mg/cm2)
= surface area available for contact (cm2/day)
absorption factor
= exposure frequency (days)
= body weight (kg)
= averaging time (number of days over which exposure is
averaged)
Assumptions:
1. Assume concentration on foliage is application rate
2. SA = 3160 cm2/day for arms, hands and legs of a child
SA 8620 cm2/day for arms, hands and legs of an adult
(USEPA, 1989)
3. ABS = 1 This is very protective, since it assumes that
~ all of the substance is absorbed through the skin.
4. EF = 1 for resmethrin (see Appendix A)
EF = 50 for permethrin (see Appendix A)
(note: the half life for permethrin in plants is
approximately 10 days. 50 is a very protective
estimate, since the concentration of permethrin will
decrease by half during the ten day interval) .
6. BW 16 kg for a child 1-6 years old, 70 kg for an adult
7. AT = 1 day for resmethrin (see Appendix A)
AT = 50 days (5 treatments at 10 day intervals)
When the constants listed above are used, the equation reduces
to:
Intakechild(mg/kg/day) = (CS mq/q) (10.3 q/mq) (3160cm2/day) (1.45mq/cm2)
1.6 kg
Intakeadult(mg/kg/day) = (CS mg/q) (10.3 q/mq) (8629cm2/day) (1.45mq/cm2)
70 kg
~ 55
CAMPBELL, KNUTSON, SCOTT & FUCHS, P.A
Ma~ 11,93 10:44 No.OOS P.Ol
C:AMPBELL, KNUTSON, seX")TT & FlJCHS, EA.
Alllmh'p at L,,,,
1hml'l.< I. C;1I1 \1'1><.' 11
HlI(:l'r N. ":nllT,"n
Th(lrn;., M, SUItt
Gary (i. hKh,
)"Il\~" R. \V.dston
Elli(lft B. KI\l'I""h
~!i;:h;,d A. Ik.\ha(k
R~'n;h' n. $ll'IT\Cr
(612) 452-Si\.,\()
E\x (612) 452.5550
.
~AC8IMILB TRAM8~I88ION - COVER 8BJ~
PLEASE DELIVER THE FOLLOWING PAGE(S) TO:
N1>ME: "- /~ 7Y~/.--J (!~L.~-rJ
FAX NUMBER: 9.37 - ..."5" ~~q
SENDER:S2t~~~nZ;)
TOTAL NUMB R F PA~ES: R ~
IF YOU DO NOT RECEIVE ALL PAGES, PLEASE
PHONE:
FAX #452-5550
DATE:.sJ.LLI~
INCLUOING COVER PAGE.
CALL AS SOON AS POSSIBLE.
COMMENTS:
.
~ ORIGINAL TO FOLLOW BY MAIL.
NOTICE OF CONFIDENTIALITY
---... -
The information contained in and transmitted with this facsimile
is:
1. SUBJECT TO THE ATTORNEY-CLIENT PRIVILEGE
2. ATTORNEY WORK PRODUCT, OR
3. CONFIDENTIAL
It is intended only for the individual or entity designated
above. You are hereby notified that any dissemination,
distribution, copying, or use of or reliance upon the information
contained in a transmitted with this facsimile by or to anyone
other than the recipient designated above by the sender is
unauthorized and strictly prohibited. If you have received this
facsimile in error, please notify CAMPBELL, KNUTSON, SCOTT &
FUCHS, BY TELEPHONE AT (612) 452-5000 IMMEDIATELY. Any facsimile
erroneously transmitted to you should be immediately returned to .
the sender by U.S. Mail, or if authorization is granted by
sender, destroyed.
Suiu:' ., 17 . E,)g.1n.tdL' Office Ct'lll('l' · 13S0 COrl'",'r,irC Center CUf\'e · Eagan. }.U" 55121
.
.
.
CAMPBELL. KNUTSON. SCOTT & FUCHS. P.A
Ma~ 11.93 10:45 No.005 P.02
(~AMPBELL, KNUTSON, SC(JTT & FUCHS, EA.
Attorneys at L~w
Tht'"',l']' C"lIll'hdl
J{"'i:.'r 1'. Knut".>n
Th.lI11;h M. S"OII
(InrI (I, Fud"
I:ml<" H. \X':t!'hl1l
'Elli,'ll n, Km'l,dl
MIC'ha..l A. '~rClh.l,k
Rc II ill' n, Stl'illl'r
(612) 4S1.SL'lO('
F:..x (6J2) 452-555\.~
May 11, 1993
BY PAX AND MAIL
Mr. Todd Hoffman
Chanhassen city Hall
690 Coulter Drive, Box 147
Chanhassen, Minnesota 55317
RE: Child ProteQtion BacKground Crime CheCK
Dear Todd:
Enclosed are the forms for requesting the Bureau of Criminal
Apprehension (BCA) to do a bacKground crime checK under the
Minnesota Child Protection Act, Minn. Stat. i 299C.60. The City
should do background checKs on all City employees involved in
recreation programs for children.
Very truly yours,
SCOTT
Roger N. Knutson
RNK:srn
Enclosures
CC: Don Ashworth
Suitt' .~ 17 · E:'lgandak O((jcc C('ntn · 1380 Corporate Center Curve · E;lg.1n, MN 55121
CRMPBELL. KNUTSON. SCOTT & FUCHS. P.A
Ma~ 11.93 10:45 No.OO~ P.Uj
INFORMED CONSENT FORM
.
The position for which you have applied requires working with
children under the age of 18. Under Minnesota State Statute
299C.60, background checks must be completed on any children's
service worker. The Bureau of Criminal Apprehension (BCA) will be
performing the background check for the following background check
crimes: cbild abuse orimes, murder, manslaughter, felony level
assault or any assault crime committed against a minor, kidnappinq,
arson, oriminal sexual conduct, and prostitution-related crImes.
Chanhassen Parks and Recreation Department
690 Coulter Drive, Box 147
Chanhassen, Minnesota 55317
Attention:
The following person has made application with this agency for
employment as a playground leader:
Full Name of Applicant:
(Last)
(First)
(Middle)
.
Date of Birth:
Sex
Race
Have you ever been convicted of any of the crimes listed above in
bold letters? Yes No
If yes, please explain:
I authorize the BCA to disclose any "Background Check Crime"
information under Chapter 299C.60 of the Minnesota state statues
Annotated to the City of Chanhassen, its officers and employees
for the purpose of employment with this agency. '
The expiration of this authorization shall be one year from the
date of my signature.
(Signature of Applicant)
(Date)
.
.
.
.
LHr'1t-"tltLL, Kf'W I 0Uf\l, 0LU I I ~ r ULt1::> , i. H
IVla!::! 11,'::'0 1V....V I~U.VV.... I.V'"I
You have the following rights under this statute:
The right to be informed by the Chanhassen Parks and
Recreation Department of the BeA's response to the background
check and to obtain from them a copy of the background check
report.
2. The right to obtain from the Parks and Recreation Department
any record that forms the basis for the report.
1.
3. The right to challenge the accuracy and completeness of any
information contained in the report or record pursuant to
Section 13.04, Subdivision 4.
4. The right to be informed by the Chanhassen Parks and
Recreation Department if your application to be employed with,
volunteer with, or to continue as an employee or volunteer has
been denied because of the BeA's response.
LHIYli J:it.LL, f\.1'lV I ")UI~, ,,)I.-U I I \)< f V~llv' I . n
11"""::1 ,.,.lI'J_ -......-----., ........---.
Procedures for Processing Child Protection Record Check
These procedures are in effect for processing all record requests
under Chapter 299C.60 of the Minnesota State Statutes Annotated.
This includes the establishment of a Chil.d Protection Background
Check and requires the BCA to 'set up procedures to perform .
background check on potential tlchild service workers" defined in
the act.
PROCEDURE~
State of Minnesota Checks
1. All request for a BCA (Minnesota) background check under this
act will be an informed consent which:
* identifies the statute that the agency is asking for the
.-data under.j -
* displays the full name, date of birth, sex And race of
the individual;
* displays the signature of the individual who is the
subject of the record check, the date and a statement as
to how long this authorization will remain in effect;
* displays the company and representative of the company
that 1s requesting the record check;
*
asks the worker if they have been convicted of a
background check crime defined in the statute and
di splayed on .he form subrni tted, this will include a
state~ent of all offenses being searched;
.
* Displays the worker's response to the question including
all convictions under the above statutes;
.'
* notifies the worker that the BCA will ba-asked-to perform
a background check; and,
* notifies the worker of their right under the statute.
2. If the informed consent does not contain these elements it
will be rejected.
3. A stamped, self-addressed envelope will accompany each group
of requests. It will be- addressed to the compa.ny and the
representative of the company making the requests. If there
is no envelope the requests will be processed and returned
once at state expense withe reminder that an envelope will be
needed for future processing.
4. A certified cheek, money order or company check made out to
the BeA in the amount equal to the total number of checks that
.
CAMPBELL. KNUTSON, SCOTT & FUCHS, P.R
.
5 .
May ll.~j lU:4( NO.UUj ~.Ub
are to be processed must accompany these requestS. No
personal checks will be accepted. If a request is presented
in person at the BeA, cash will be accepted. At this time the
required amount per record check is eight dollars and no cents
(S8. 00). If a. check does not accompany the requests they will
be returned without being processed.
BCA/ Record and Identification Services. will process the
request, conduct the record check, review the record for any
convictions and return a letter indicating the result of the
inquiry (Attachment 1).
Federal Bureau of Investigation checks
1. The agency making the request will submit the proper
completed, fully rolled applicant fingerprint card to the BCA.
Please note that this means that all fields required on the
card must be com.~leted, the fingerprints must be fully rolled
and the statute that they are requesting this under must be on
the card. Failure to complete this card will result in the
rejection of the card by the FBI.
2. A twenty three dollar ($23.00) certified check or money order
made out to the FBI will be stapled to the card.
3. The BCA will not roll fingerprint impressions for this
purpose.
. 5.
.
4.
The BeA will forward these cards to the FBI for processing.
Upon the return of the card, a letter (Attachment 2) will be
sent to the requesting agency indicating whether the
indi vidual qual if ies under the act. I f the FBI could not
complete the check because of the quality of the prints the
BCA will maintain those prints for one month so that the
agency can resubmit with no additional cost to the agency.
Once one month has expired the BOA will destroy the
fingerprint cards and the agency will have to start the
process again.
CRMF'Bc..LL, Kr\lU I ~UN, ~LU I I lS< r ULM,j, r. t1
1"1 0 ~ ..L J. , J"" .L V . ""'" '-' I" '-' . v v __ I
.
RE:
~
DOB:
Pursuant to Minnesota Statutes Annotated. Chapter 299C. 60 the above
named individual has applied with your company/business/agency.
Pursuant to the statute we are not able to release any actual data
which may be maintained by the BeAt but this office has information
which indicates the following:
The background information contained in the documentation
~ complete and accurate.
The background information contained in the documentation
is not complete and accurate.
If the individual wishes to review the information they should
contact:
Director
Record and Identification Services
Bureau of Criminal Apprehension
1246 University Ave
St. Paul, MN. 55104
.
The BCA will supply the individual with the requirements and forms
needed to review the information maintained by the BCA.
Sincerely yours.
MARK K. SHIELDS
SUPERINTENDENT
By: Karen McDonald
Director,
R/I Services
MKS/KRM/clc
.
CAMPBELL, KNUTSON, SCOTT & FUCHS, P.A
Ma~ 11,93 10:48 No.OOS P.08
.
,RE:
DOB:
Pursuant to Minnesota Statutes Annotated t C:hapter 299C. 60 the above
named individual has applied with your company/business/agency. A
fingerprint card was submitted to the FBI Identification Division.
Pursuant to FBI policy we are not able to release any actual data
which may be maintained by the FBlt but the office hAS received
information from the FBI which indicates the following;
The information contained in the documentat.ion II
complete and accurate.
The individual fingerprints submitted to the FBI were not
classifiable. A search by name we performed. If you
wish a search by fingerprints, you must submit another
set of fingerprints to this office within one month.
There is no additional charge but the card must indicate
that it is a resubmission. This office will then forward
it to the FBI.
.
The information contained in the documentation is not
complete and accurate.
I f the individual wishes to review the information they should
contact:
Assistant Director '
Identification Division
Federal Bureau of Investigation
Washington, D.C. 20537
The FBI will supply the individual ~ith the requirements and for~s
needed to review the information maintained by the FBI.
Sincerely yours,
MARK K. SHIELDS
SUPERINTENDENT
By: Karen McDonald
Director
R/I Services
.
MKS/KRM/clc
CNA INSURANCE COMPANIES
POBox 9322
Minneapolis, MN 55440
Rr.Cr-'Vt-"
... n... i,;
.
Mr. Todd Gerhardt
Administrative Assistant
City of Chanhassen
P. O. Box 147
Chanhassen, MN 55317
a~AY'-: n 1Qg"l
!VI , .' I) ''-' ,)
CITY or C"iAi~H~SSE~
~C)rM c.c Tc>(.~ \J.
1:ft"'(J.
(~~;
April 30, 1993
RE: loss Control Visit of
City Hall, Park & Recreation
Office, lake Susan Park,
lake Ann Pavilion
April 21, 1993
~, rH~~ lc>-3
t- Ii 'C. V""
Dear Mr. Gerhardt:
This letter is sent to confirm my visit with you and Mr. Todd Hoffman, Park and
Recreation Director.
During our visit we reviewed and discussed the city's most current loss data as
surmised in the most current loss information for the preceding twelve month
period ending February 1993.
The following is loss analysis concerning the city's general liability/package
insurance.
.
A total of 6 claims requiring a total amount incurred of $10,215.00 estimate
analyzed as follows.
loss Type
Frequency
Severity
lightning
Explosion
leak/Seep
Struck By
NOC (Water Damage)
16.6%
16.6%
16.6%
33.3%
16.6%
65.2%
19.5%
5.8%
7.6%
1. 7%
As concerns the city's motor vehicle insurance, it is noted that the city has
had 8 occurrences/claims over the preceding 12 month period requiring a total of
$12,960.00 in reserves. The following is an analysis of this data.
.
CNA
For All Ihe CommitmeulS You Makes
CNA INSURANCE COMPANIES
POBox 9322
Minneapolis, MN 55440
.
Mr. Todd Gerhardt
-2-
April 30, 1993
loss Type FreQuency Severity
Fail ure to Stop 25~ 57.5~
Struck By Object 37.5~ 1.6~
left Road 12.5~ 15.4%
left Turn 12.5~ 17.6~
Backed In 12.5~ 7.6%
.
As you can see from the analysis for both lines of coverage, individual claims
such as the lightning claim on your company's package/general liability
insurance and the individual failure to stop claim under your auto liability
have been responsible for the majority of all loss dollars for this time period.
No specified trending is identified at this time as 5 of the 8 motor vehicle
claims are the result of collision only and are responsible for 98.3% of all
dollars incurred, of which there may be subrogation possibilities available.
During my meet with Mr. Hoffman we reviewed and discussed in detail the loss
control and safety activities relative to the park and recreational facilities.
He shared with me the most current park and recreational facilities booklet,
along with other documentation relative to the city park operations.
We also jointly made visits to the lake Susan Park and the new pavilion under
construction at lake Ann.
I was very much impressed overall with the ongoing loss control and safety
activities and Mr. Hoffman's loss control attitude and knowledge concerning his
area of operations.
Enclosed please find a complete list of the loss control client use materials
available at your request. There may be some information available within the
client use material that both you and Mr. Hoffman will find helpful, especially
concerning your company's ongoing training activities as indicated 1n your
company's new safety manual.
All previously submitted recommendations have been appropriately addressed and
responded to as needed.
I am please to report at this time that no new recommendations are being
submitted, however, it is important that all losses continue to be addressed in
a timely fashion utilizing the Timely Notice of loss guidelines as previously
discussed.
. CNA
For All the CommitmeDts You Make.
CNA INSURANCE COMPANIES
POBox 9322
Minneapolis, MN 55440
.
Mr. Todd Gerhardt
-3-
April 30, 1993
As always, if I can be of any assistance to you and the city, please do not
hesitate to contact me personally.
As you and I discussed, I will be prioritizing additional loss control visits to
other park areas as dictated by operation and size as noted by Mr. Hoffman.
Upon completion of these park visits I will also be submitting recommendations
to you and Mr. Hoffman as necessary.
Until then, if I can be of any assistance, please contact me personally.
Sincerely yours,
e.--;?~ 6/lt/Ld
Noel W. Gilliland
Loss Control Specialist
Minneapolis Branch
(612) 336-2536
1-800-262-1612
.
cc: Mr. Don Ashworth, City Manager
Dolliff Insurance Agency
LOC/LC08F30.205/825
.
CNA
For All the CommiUDeDU You Make8
, ,
.
.
.
Project
Project No.
Date
By
Arboretum Boulevard
652323.90300
May 7, 1993
Deborah Porter
Meeting Report
Meeting Location
Meeting Date 5/4/93
Participants
Ron Erickson, MnDOT
Evan Green, MnDOT
Todd Hoffman, City of Chanhassen
Deborah Porter, Barton-Aschman
Summary
A meeting was held to discuss the probable impacts to Lake Ann Park created by both
the alignment shift in TH 5 and the proposed access boulevard through the park. The
amount of parkland impacted by each of the proposed improvements is shown on the
attached diagram. The parkland to be converted to city streets is 2.5 acres; the parkland
conversion for TH 5 is 1.6 acres; the area within the proposed roadways is 2.3 acres.
The conversion of 4(0/6(0 land requires that all prudent and feasible alternatives to the
impact be considered. H none exist, then mitigation of those impacts must be offered
and replacement land (of the 6(0 taking) of at least equal market value and recreational
usefulness must be purchased by the agency or LGU who is requesting the conversion.
The City of Chanhassen has agreed to be the requesting agency for the total amount of
4(0/6(0 conversion which will be about 4.1 acres of parkland. MnDOT has committed
to purchasing the private parcel of land (Notermann property) and donating to the city
the portion that remains after right-of-way needs for TH 5 are met.
In terms of replacement land for the 6(0 impact of 4.1 acres, it is possible that the
remainder of the Notermann property that is not needed for TH 5 or the access
boulevard, which totals to about 0.8 acres, could serve as part of the replacement land
required. The city has agreed to work on identifying and purchasing adequate
replacement land for the project. MnDOT has also agreed to reimburse the city for
MnDOTs portion of 4(0/6(0 impact created by TH 5 reconstruction.
RECEIVED
MAY 1 0 1993
CITY. OF CHANHASSEN
Barton-Aschman Associates, Ine.
111 Third Ave South. Minneapolis, MN SS401 . (612) 332-0421
BA will proceed in reliance on this report. Any discrepancies should be brought to our attention in writing
within (7) days.
Project
Page
Arboretum Boulevard
Two
Meeting Reportcont~
.
The issue of the remaining parkland within the buffer area between the access boulevard
and TH 5 was discussed with Gerry Larson of MnDOT as to whether or not that area
(2.3 acres) may be considered as an indirect conversion by the reviewing agencies
(FHW A, Minnesota Department of Trade and Economic Development, National Park
Service). H it is shown that this area will remain as recreationally usable parkland, then
there may be no need to include this area in the 4(f)j6(f) conversion request.
Professional land appraisals of the impacted 4(f)j6(f) land and the proposed replacement
land should be conducted in the near future so that the information is available for the
Environmental Assessment document. MnDOT may be able to provide appraisal
assistance to the city for activity.
Gerry Larson will be contacting other reviewing agencies to get their input on the
proposed approach of this conversion process.
kro
.
Barton-Aschman Associates, Inc.
111 Third Ave South. Minneapolis, MN 55401 . (612) 332.{),f21
.
BA will proceed in reliance on this report. Any discrepancies should be brought to our attention in writing
within (7) days.
.
.
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C ITV OF
CHANHASSEN
.
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
MEMORANDUM
FROM:
Todd Hoffman, Park and Recreation Director
-#
TO:
Don Ashworth, City Manager
DATE:
May 13, 1993
SUBJ:
Resignation of Park and Recreation Commissioner Koubsky
Dave Koubsky has tendered his resignation from the Park and Recreation Commission. Mr.
Koubsky has faithfully served the city in his capacity as a Park and Recreation Commissioner
since January of 1991. However, due to a change in employment and a move to another
community, Mr. Koubsky is no longer able to fulfill his position on the commission. Dave's
contribution to the public process of operating a Park and Recreation Commission has proved
valuable. The commission will toast Dave's accomplishments and bid him farewell on May 25,
1993, the night of his last meeting. .
I intend to advertise this vacancy in the Chanhassen Villager on May 20 and 27. Applications
will be accepted through June 15, with interviews being conducted by the commission on June
22, 1993. The City Council will receive the commission's recommendation on July 12, 1993,
having the opportunity to interview candidates if they so choose that evening. This schedule will
allow the new commissioner to be on board for the July 27 Park and Recreation Commission
meeting.
.
n
~., PRINTED ON RECYCLED PAPER
.
.
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LAKE ANN PARK PICNIC/RECREATION SHELTER
YOU'RE INVITED...
DIGNITARY OPEN HOUSE
THURSDAY, JUNE 3, 1993
Entertainment by the J. C. Band
5:00 - 6:00 p.m. Take time to try one of the new paddle
boats, canoes or row boats.
6:00 p.m.
6:45 p.m.
Social Time, Upper Level Shelter
Program... Don Chmiel, Mayor
Acknowledgements...Todd Hoffman,
Park and Recreation Director
7:00 p.m.
Bar-be-que Supper featuring bratwurst,
hamburgers, and all the fixin's.
Casual Attire - Spouses/Guests Are Welcome!
RSVP to Karen Engelhardt at 937.1900 by May 27,1993
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CITY OF
CHANHASSEN
690 COULTER DRIVE. P.O. BOX 147. CHANHASSEN, MINNESOTA 55317
(612) 937-1900 . FAX (612) 937-5739
MEMORANDUM
TO: Todd Hoffman, Park and Recreation Director
FROM:
1~
Jerry Ruegemer, Recreation Supervisor
DATE:
May 19, 1993
SUBJ:
Little League Ballfield Resolution
This is an update regarding the ballfield request for Chanhassen's Little League Program and
South Tonka Little League. After this item was addressed at the April 27 Park and Recreation
Commission meeting, all the parties involved sat clown outside the meeting and worked out a
compromised schedule. The schedule below is the solution:
Chanhassen Little League
South Tonka Little League
Mondays
Lake Ann No.2
Meadow Green No.2
Tuesda ys
Lake Ann No. 2
Tuesdays
Lake Ann No.4
Wednesdays Lake Ann No.2
Lake Ann No.3
Meadow Green No. 2 (practice)
Thursdays
Lake Ann No.2
Fridays
Lake Ann No.2
Lake Ann No.3
Meadow Green No.2 (practice)
Note: South Tonka Little League will double up games at Freeman Field in Shorewood rather
than playing at Meadow Green Park on Thursday nights as agreed upon.
n
t J PRINTED ON RECYCLED PAPER