Mansur Industries
8425 SW 129th Terrace
Miami, Florida 33156

Attention: Mr. James N. Jackson

Subject: Calculation of Potential VOC Emissions from A SYSTEMOne parts washer
LAW Project Number 40740-6-0187

Dear Mr. Jackson:

At Mansur's request, we have calculated the potential volatile organic compound (VOC) emissions from the typical operation of a SYSTEMOne parts washer, using Ashland Chemical Company (Ashland) product 140 Solvent Rule 66 (solvent). The calculations are based upon information regarding monthly product loss provided by Mansur and solvent chemical properties obtained from the MSDS and discussions with Ashland. This information along with the assumptions and equations used in the calculation is detailed on the attached work sheet. The calculations were performed for the worst-case scenario that all product loss is attributable to volatilization of VOCs. Thus, actual VOC emissions are likely less than those listed below.

Our calculations yield the following results for the typical operation of a SYSTEMOne parts washer:

Evoc (day) = 0.65 pounds
Evoc (month) = 19.49 pounds
Evoc (year) = 234 pounds~0.11 tons

As you can see, potential VOC emissions are quite low. In fact, based on these results, The SYSTEMOne parts washer will typically qualify as an insignificant emission unit under State Air operating permit programs. Please note that these results represent a typical case and that actual VOC emissions may vary slightly based on actual operating practices,l temperatures, etc.

We hope this information is satisfactory. Should you require further clarification please do not hesitate to contact us.

LAW ENGINEERING AND ENVIRONMENTAL SERVICES

Shaun Booth P.E. Claire D. Hill, C.H.M.M.
Principal Senior Environmental Scientist