toxics and enviromental Flashcards
what is chronic toxicity?
Chronic toxicity produce health damage after long exposures even at low concentrations
what is acute toxicity?
Acute toxicity produce health damage after short exposures even at low concentrations
why is it important to study toxic exposure?
Studied to protect human life mainly but has secondary objective of protecting animals and plants
what are the two most important factors in determing the health effects of toxics?
Substance concentration and exposure are key factors in determining health consequences
what is the latency?
Latency is the time between exposure and the manifestation of health effects
what is a marginal trash charge?
a tax levied on the consumer at the time of disposal
what is an advanced disposal fee?
a tax levied on the producer of packaging at the time of sale of the product
what are the key differences between the marginal trash charge and the advanced disposal fee?
MTC induces re-use and reduction* ADF does not* Fewer producers than consumers, so ADF easier to administer* MTC induces some evasion, but ADF cannot be evaded* MTC might induce littering and illegal dumping
what are the benefits of the recycling scheme with a marginal trash charge and a recylcing collection charge but without an advanced disposal fee?
it has the correct reuse incentives and the marginal trash charge might be tailored to to local communities
what are the negatives of the recycling scheme with a marginal trash charge and a recylcing collection charge but without an advanced disposal fee?
adf might be easier to administer due to fact there is less producers then consumers. there is the largest incentive for illegal dumping. the charge for recycling may be misunderstood. it requires different recycling charges.
what are the benefits of the scheme with a Advanced disposal fee and a marginal trash charge but no recycling collection charge?
uses adf which is easy to administer, mtc is low so lowers risk of illegal disposing.
what are the negatives of the scheme with a Advanced disposal fee and a marginal trash charge but no recycling collection charge?
ADF could vary over products, but difficult to make it vary geographically (inequality of incentives). MTC is expensive to administer if varied across products, so over-incentive to recycle poor value waste and under-incentive to recycle high value waste
what are the positives of a scheme with an advanced disposal fee and a recycling refund without a marginal trash charge?
ADF is large here it basically subsidizes recycling disincentivizing re-use, ADF should vary across places and products to really make the equality work in different conditions
what are the negatives of a scheme with an advanced disposal fee and a recycling refund without a marginal trash charge?
ADF probably at national level while recycling at local level which is administratively costly
what scheme does the OECD support?
Richard Porter in the OECD document supports scheme with a Advanced disposal fee and a marginal trash charge but no recycling collection charge due to it being easy to administer, makes common sne and is politically acceptable and only this scheme gives incentive to the producers