successful reduction of the pbt lindane
DESCRIPTION
Successful Reduction of the PBT Lindane. Ann Terese Heil, Senior Engineer Sanitation Districts of Los Angeles County 1955 Workman Mill Road, Whittier CA 90601 562/699-7411, x2950 fax 562/692-5103 [email protected]. SANITATION DISTRICTS OF LOS ANGELES COUNTY. Lindane. - PowerPoint PPT PresentationTRANSCRIPT
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Successful Reduction of the PBT Lindane
Ann Terese Heil, Senior Engineer
Sanitation Districts of Los Angeles County
1955 Workman Mill Road, Whittier CA 90601
562/699-7411, x2950 fax 562/692-5103
SANITATION DISTRICTS OF LOS ANGELES COUNTY
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Lindane
-hexachlorocyclohexane
• Organo-chlorinated pesticide
• Persistent, Bioaccumulative, Toxic chemical
• Readily skin-absorbed
• Causes seizures, birth defects, kidney and liver damage, death
• Possible carcinogen
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• Based on human health
• Drinking water sources: 19 ppt
• Current levels ~ 40 ppt
Lindane Water Quality Criteria
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Medical:
head lice
scabies
Pesticide:
Seed treatment
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LACSD Lindane Sources
Negligible sources: food residue, pet shampoos, structural, agriculture
Head Lice and Scabies 99%
Human Ingestion
0.55%
Treatment
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Environmental Impacts
• One head lice or scabies treatment contaminates 6 million gallons of water
• Cost to remove lindane in wastewater from one head lice or scabies treatment is $4000
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Local Solution:Public Outreach
Goal:
Develop a low cost outreach program
effective at reducing lindane usage
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Get Help!Partners:
– City of Los Angeles Bureau of Sanitation
– National Pediculosis Association
Technical Advisory
Committee
911
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EPA Pollution Prevention Leadership Grant $80,000
LACSD staff time and sampling
City of LA staff time and sampling
NPA staff time and comb discount
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Targets
• Doctors
• Pharmacies
• School nurses
• Day care centers
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Pre-outreach survey
Simple, hard-hitting messages
Focus on environment
Also mention health impacts
Offer an alternative
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Maximize Exposure
• Three mailings• Mass media• PTAs• Environmental
groups• Web site• Hotline• Television
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Sample Results - Impact of Outreach in Long Beach Area
0
10
20
30
40
Control Outreach
Before Before
After
After
Med
ian
Lin
dan
e, p
pt
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Sample Results - Impact of Outreach in Burbank Area
0
5
10
15
20Before
After
Ave
rag
e L
ind
ane,
pp
t
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Survey Results - Physician Behavior Change
0
20
40
60
80
100
Doctors Prescribing Lindane
Before
After
Per
cen
t
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Pharmacy Study Results - Sales Ratios
0
1
2
3
4
Rat
io L
ind
ane
to N
on
-L
ind
ane
Rem
edie
s
Control Outreach
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Feedback
• 6400+ web site hits
• Few hot line calls
• Numerous e-mails
“… I’m adding a few pictures of what comes out of my lesions. What you see here is not a blood clot but some kind of membrane sac filled with fluid with blood mixed in with it. It also has a lot of little black specks inside of it.”
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Outreach Package
• Sample letters
• Sample press releases
• Samples of outreach materials
• Generic version of outreach video
• Electronic versions of artwork
Contains:
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State Solution:Legislation
• AB 2318 Lowenthal
• Ban medical uses of lindane in California
• Signed by Governor Davis in Sept. 2000
• Takes effect January 1, 2002
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National Solution: Regulation
Head lice and scabies
Agriculture Landscaping Veterinary
EPA is reviewing all lindane registrations this year
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International Solution:
Cooperation
• USA/Canada/Mexico• Commission for Environmental Cooperation• North American Regional Action Plan for
lindane