Sustainable
Steps

Lifecycle Analysis

LCA Eco-Indicators

Environmental effect	Weighting factor	Criterion
Greenhouse effect	2.5	0.1°C rise every 10 years, 5% ecosystem degradation
Ozone layer depletion	100	Probability of 1 fatality per year per million inhabitants
Acidification	10	5% ecosystem degradation
Eutrophication	5	Rivers and lakes, degradation of an unknown number of aquatic ecosystems (5% degradation)
Summer smog	2.5	Occurrence of smog periods, health complaints, particularly amongst asthma patients and the elderly, prevention of agricultural damage
Winter smog	5	Occurrence of smog periods, health complaints, particularly amongst asthma patients and the elderly
Pesticides	25	5% ecosystem degradation
Airborne heavy metals	5	Lead content in children’s blood, reduced life expectancy and learning performance in an unknown number of people
Waterborne heavy metals	5	Cadmium content in rivers, ultimately also impacts on people (see airborne)
Carcinogenic substances	10	Probability of 1 fatality per year per million people

Table 1. Weighting factors for environmental effects

PRé Consultants (Product ecology consultants)

Mr. Michiel Oele

Plotterweg 12

3821 BB Amersfoort

the Netherlands

Telephone: +31 (0)33 4555022

Telefax: +31 (0)33 4555024

E-mail: info@pre.nl

Web site: www.pre.nl

Sylvatica

Gregory A Norris Ph.D

147 Bauneg Hill Road, Suite 200

North Berwick, ME 03906 USA

Tel: (+1) 207 676-7640

email: norris@sylvatica.com