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).
home glossary Circular E. Circular E, Employer's Tax Guide, also known and Publication 15, is published annually by the IRS and includes definitions of frequently used payroll terms and concepts, rules and regulations for the filing of federal employment taxes, and percentage method and wage bracket federal income tax withholding tables.
Table of Contents. 1  Publication 560 - Introductory Material Future Developments. 2  1. Definitions You Need To Know Other options. 3  2. Simplified Employee Pensions (SEPs) Topics - This chapter discusses: Useful Items - You may want to see: Setting Up a SEP When not to use Form 5305-SEP.