A: Boil Water Advisory is a recommendation made to residents in a place to only drink tap water if it has been boiled for at least one minute. This recommendation is made to the town to protect the health of its people.
Those counties with the highest potential are designated as Zone 1; those with the lowest comprise Zone 3. Zone 1 areas have predicted average radon levels at or above the EPA's 4.0 pico-Curies per liter (pCi/L) action level. (pCi/L is a measure of the amount of radioactivity in a known quantity of air.) If you are building in a Zone 1 county, you should include a radon control system in your new home. It is an inexpensive addition to the total cost of your house and is an easy way to protect you and your family. To determine which radon zone your new house will be built, please contact your state radon office. Top of page
The Illuminating Engineering Society of North America (IESNA) has adopted the concept of environmental zones (described in Table 1) and recommends their use in developing new outdoor lighting (IESNA 1999). In some states legislation is being considered that would restrict outdoor lighting by environmental zone.For example, California has drafted environmental legislation that includes the designation of outdoor lighting zones (CEC 2002).Application of environmental zones is first envisioned for the protection of natural park preserves and astronomical observatories.Environmental zones promise to reduce overall light pollution by helping to limit, or in some cases eliminate, light wastage.or example, California has drafted environmental legislation that includes the designation of outdoor lighting zones (CEC 2002). Application of environmental zones is first envisioned for the protection of natural park preserves and astronomical observatories.