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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 [email protected]. SANITATION DISTRICTS OF LOS ANGELES COUNTY. Lindane. - PowerPoint PPT Presentation
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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
Lindane
-hexachlorocyclohexane
• Organo-chlorinated pesticide
• Persistent, Bioaccumulative, Toxic chemical
• Readily skin-absorbed
• Causes seizures, birth defects, kidney and liver damage, death
• Possible carcinogen
• Based on human health
• Drinking water sources: 19 ppt
• Current levels ~ 40 ppt
Lindane Water Quality Criteria
Medical:
head lice
scabies
Pesticide:
Seed treatment
LACSD Lindane Sources
Negligible sources: food residue, pet shampoos, structural, agriculture
Head Lice and Scabies 99%
Human Ingestion
0.55%
Treatment
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
Local Solution:Public Outreach
Goal:
Develop a low cost outreach program
effective at reducing lindane usage
Get Help!Partners:
– City of Los Angeles Bureau of Sanitation
– National Pediculosis Association
Technical Advisory
Committee
911
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
Targets
• Doctors
• Pharmacies
• School nurses
• Day care centers
Pre-outreach survey
Simple, hard-hitting messages
Focus on environment
Also mention health impacts
Offer an alternative
Maximize Exposure
• Three mailings• Mass media• PTAs• Environmental
groups• Web site• Hotline• Television
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
Sample Results - Impact of Outreach in Burbank Area
0
5
10
15
20Before
After
Ave
rag
e L
ind
ane,
pp
t
Survey Results - Physician Behavior Change
0
20
40
60
80
100
Doctors Prescribing Lindane
Before
After
Per
cen
t
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
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.”
Outreach Package
• Sample letters
• Sample press releases
• Samples of outreach materials
• Generic version of outreach video
• Electronic versions of artwork
Contains:
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
National Solution: Regulation
Head lice and scabies
Agriculture Landscaping Veterinary
EPA is reviewing all lindane registrations this year
International Solution:
Cooperation
• USA/Canada/Mexico• Commission for Environmental Cooperation• North American Regional Action Plan for
lindane