From the following list, Auditing environmental risks $25 000 Auditing supplier performance $50 000 Employee medical costs following a chemical spillage $5000 Fines for environmental damage $20 000 Cost of cleaning up plant following a leakage $30 000 Costs to reduce pollutants during manufacture $100 000 Cost of employee training $50 000 Depreciation of testing equipment $20 000 Cost of supplies used in testing and monitoring $10 000 Estimated lost sales revenue $500 000 Cost of occupational health and safety claims $10 000 Cost of cleaning up polluted sites $100 000 67. calculate the total environmental prevention costs