Pollution Prevention (P2) Annual Progress Report: Examples
- Estimating the Number of Employees
- Estimating Source Reduction
- Estimating Source Reduction When Production Increases
- Estimating the Amount to be Source Reduced Over a Five-Year Period
- Estimating the Percentage of Waste Minimization for the Goal Year
Use these examples when estimating employees, source reduction, source reduction when production increases, amounts to be reduced over five years, and waste minimization for the goal year.
The number of employees is based on the number of hours worked. For example, a repair shop has:
- three mechanics who work 40 hours/week,
- a contract custodian who works 10 hours/week, and
- a part-time secretary who works 30 hours/week.
Total hours for all employees:
(40 × 3) + 10 + 30 = 120 + 10 + 30
A facility uses a solvent bath to clean filament wire in a batch process. Production is constant from year to year. Facility records in 2008 showraw material changes resulted in the 500-gallon tank contents being changed 10 times, generating 1 ton of hazardous waste (HW) per cleaning. In 2009, raw material changes resulted in the tank contents being changed 10 times, but only generating 0.9 tons of HW per cleaning. The facility calculated its source reduction as follows:
Step 1. Determine quantity of waste generated in 2008 and 2009 from the batch process:
HW gen. 2008 = (10 cleanings) × (1.0 ton HW/cleaning) = 10 tons
HW gen. 2009 = (10 cleanings) × (0.9 ton HW/cleaning) = 9 tons
Step 2. Determine the difference in quantities of waste generated between 2008 and 2009, which is the amount source-reduced:
A facility manufactures widgets and generates a hazardous waste stream called waste stream 1 (ws1). In this case, the amount of HW generation associated with ws1 is directly proportional to how many widgets are produced. In 2009, the company instituted good operating practices that generated less hazardous waste per widget, but they increased production so their hazardous waste generation increased.
For this case, the company needs to consider the amount of waste generated per product in order to determine the amount source reduced.
Step 1. Calculate Activity Productivity (A/P) Index:
A/P Index = 3,000 ÷ 2,000 = 1.5
Step 2. Multiply waste quantity generated in 2008 by the A/P Index:
(5 tons) × (1.5) = 7.5 tons
This is the amount that would have been generated if the company had not instituted the good operating practices.
Step 3. Subtract the 2009 waste quantity from the quantity that would have been generated in 2008 without good operating practices (source reduction activity).
If the good operating practices had not been implemented, the company would have generated an additional 0.5 ton of hazardous waste in 2009.
A company reports 20 tons of xylene on TRI Form R. The xylene is an ingredient in the solvent it uses to manufacture its product. They prepare a five-year plan for reducing xylene.
- During the first year of their plan the company expects to educate its employees on better handling of the solvent (putting lids on containers, minimizing spills, and checking for leaks in the process area). By implementing these inventory control procedures, the company hopes to use five tons/year less xylene.
- In the second year, it plans to have a solvent reuse-recirculation device in place that will route unused solvent back into the process. This change will result in a source reduction of 10 tons per year.
- By their third year, the company hopes to find an alternate material that does not contain hazardous or TRI-listed chemicals. This change will source-reduce the remaining five tons.
|Plan Year||Amount Source-Reduced||Amount Generated|
|1||5 tons||20 – 5 = 15 tons|
|2||10 tons||15 – 10 = 5 tons|
|3||5 tons||5 – 5 = 0 tons|
|4||0 tons||0 tons|
|5||0 tons||0 tons|
= 20 tons
A company generates 100 tons of hazardous sludge per year. As part of the P2 Plan, the company is implementing a waste treatment project. The sludge will no longer be hazardous after treatment. In the first year, it treats 10 tons of the 100 tons generated. In the second year the company expects to be treating 15 tons. In the third year it plans to be treating 20 tons. In the fourth year it plans to be treating 25 tons. By the fifth year, the company expects to treating 30 tons of the 100 tons produced per year.
This report only asks for the the estimated amount of waste you are planning to minimize during the fifth year of your five-year plan.
(100 tons Total)