District Office Locations The Michigan Department of Environmental Quality has established district and field offices to provide department services throughout the state.
They have a lot more caffeine than an 8-ounce cup of coffee.. That 8-ounce cup of coffee has about 100 milligrams of caffeine, although coffees and teas vary widely in their caffeine content depending on how they are brewed. For example, CR finds that 8 ounces of Starbucks coffee has 165 milligrams of caffeine. CR says safe limits of caffeine are up to 400 milligrams per day for healthy adults, 200 milligrams a day for pregnant women, and up to 45-85 milligrams per day for children, depending on weight.
How Many Milligrams of Caffeine is in Decaffeinated Green Tea? Naturally decaffeinated green tea contains about 2 milligrams of caffeine per cuppa. An average cup of green tea contains approximately 20-30 milligrams of caffeine depending upon the length of infusion. The longer the infusion time, the more caffeine in the cuppa. You may wonder why a decaffeinated tea would have any caffeine in it at all, but most do. For added information, The Republic of Tea uses only a natural CO2 high-pressure extraction process employing carbon dioxide, one of the most expensive yet effective decaffeination processes.