Section 116.9403 - IDENTIFYING PRIORITY CHEMICALS(a) The department, after consultation with the agency, may designate a chemical of high concern as a priority chemical if the department finds that the chemical: (1) has been identified as a high-production volume chemical by the United States Environmental Protection Agency; and(2) meets any of the following criteria:(i) the chemical has been found through biomonitoring to be present in human blood, including umbilical cord blood, breast milk, urine, or other bodily tissues or fluids;(ii) the chemical has been found through sampling and analysis to be present in household dust, indoor air, drinking water, or elsewhere in the home environment; or(iii) the chemical has been found through monitoring to be present in fish, wildlife, or the natural environment.(b) By February 1, 2011, the department shall publish a list of priority chemicals in the State Register and on the department's Internet website and shall update the published list whenever a new priority chemical is designated.