Section 799.1 - Scope and purpose(a) This part identifies the chemical substances, mixtures, and categories of substances and mixtures for which data are to be developed, specifies the persons required to test (manufacturers, including importers, and/or processors), specifies the test substance(s) in each case, prescribes the tests that are required including the test standards, and provides deadlines for the submission of reports and data to EPA.(b) This part requires manufacturers and/or processors of chemical substances or mixtures ("chemicals") identified in subpart B to submit letters of intent to test, exemption applications, and study plans in accordance with EPA test rule development and exemption procedures contained in part 790 of this chapter and any modifications to such procedures contained in this part.(c) This part requires manufacturers and/or processors of chemicals identified in subpart B to conduct tests and submit data in accordance with the test standards contained in this part in order to develop data on the health and environmental effects and other characteristics of these chemicals. These data will be used to assess the risk of injury to human health or the environment presented by these chemicals.(d) This part contains certain TSCA test guidelines which are cross-referenced in the test rules contained in this part.49 FR 39817, Oct. 10, 1984, as amended at 62 FR 43824, Aug. 15, 1997