Another researcher identified the character of household wastewater using average and. maximum levels. Average BOD. 5 levels were identified as 200 mg/L with a maximum of 400 mg/L, average TSS levels of 200 mg/L with a maximum of 400 mg/L, and average Grease levels of 50 mg/L. with a maximum of 150 mg/L (Laak, 1986).
IRS Releases 2016 Publications 15, Circular E; 15-A; and 15-B. The IRS has released the 2016 Circular E, Employerâs Tax Guide (Publication 15); the Employerâs Supplemental Tax Guide (Publication 15-A), and the Employerâs Tax Guide to Fringe Benefits (Publication 15-B). Circular E includes the 2016 Percentage Method Tables and Wage Bracket Tables for Income Tax Withholding.
For further information, see Publication 501 (Exemptions, Standard Deductions and Filing Information) and Publication 503 (Child and Dependent Care Expenses). You may order copies of these publications by calling 1-800-829-3676 (or 1-800-TAX-FORM).