In order to demonstrate that the hazardous constituents in the recyclable material are bound in the product so that they would not exceed the applicable STLC, even when eliminating the effect of dilution by other ingredients, the following procedures must be used.
weight of final product | ||||
.......................... | = | dilution factor | ||
weight of recyclable material |
The final calculation of the hazardous constituents present in the product, as determined by taking into account the effects of dilution, must be less than the applicable STLC.
[The following is an example of how these calculations can be done.
A ton of spent sandblast grit, which is hazardous due to a mean soluble lead concentration of 12 mg/L, is combined with nineteen tons of other aggregate and asphalt to produce twenty tons of asphaltic concrete. The dilution factor is calculated by dividing the twenty tons of final product, including the recyclable material, by the original one ton of recyclable material. This gives us a dilution factor of 20. The asphaltic concrete is then subjected to the WET and yields mean results for lead of 0.23 mg/L. This number is then multiplied by the dilution factor, 20, for a result of 4.60 mg/L. This final result, 4.60 mg/L, does not exceed the STLC for lead of 5 mg/L and therefore meets the criterion.
Note: This is only an example of how to implement this requirement and does not provide guidelines for hazardous waste sampling and analysis. Furthermore this example is not binding on the regulated community.]
Cal. Code Regs. Tit. 22, § 66266.21
2. Change without regulatory effect amending subsection (b)(5)(A) filed 7-1-2004 pursuant to section 100, title 1, California Code of Regulations (Register 2004, No. 27).
Note: Authority cited: Sections 25143.2(e)(2) and 25150(e), Health and Safety Code. Reference: Sections 25143.2(f), 25150(e), 25170(i) and 25244.1, Health and Safety Code.
2. Change without regulatory effect amending subsection (b)(5)(A) filed 7-1-2004 pursuant to section 100, title 1, California Code of Regulations (Register 2004, No. 27).