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.
In the first issue of Scientific American: Centrifuges and levitating haystacks. Scientific American, the oldest continuously published magazine in America, began life on August 28, 1845 as a 4-page, black and white newsletter. There were only a couple of illustrations.