Preliminary Assessment Information Rule

All the PMBs are Hsted on the U.S. EPA s Toxic Substances Control Act NonConfidential Chemical Substances Inventory (Table 8). In the early to mid-1980s, pseudocumene, mesitylene, hemimellitene, and trimethylbenzene were coveted by TSCA Section 8(a) Preliminary Assessment Information Rule (PAIR) reporting requirements (22) and by TSCA Section 8(d) for health and safety data (23). Mesitylene is the subject of a test rule subacute oral toxicity and subchtonic oral toxicity in tats were underway in 1994 (24). The Safe Drinking Water Act (SDWA) allows monitoring for pseudocumene and mesitylene at the discretion of the State (25). Of the PMBs, only pseudocumene is subject to SARA Tide III section 313 annual release reporting (26). 

TSCA 8(a) authorizes EPA to promulgate rules requiring manufacturers and importers of certain chemical substances and mixtures to maintain records and submit reports of production volumes, distribution, use, and human exposure under the Preliminary Assessment Information Rule (PAIR) and Inventory Update Reporting (lUR) Rule ... 

Preliminary Assessment Information Reporting Rule Yes EPA 1995a (40 CFR 712.30)... 

TSCA chemical information rules manufacturers and importers must submit a Preliminary Assessment Information Manufacturers Report for each site at which they manufacture or import each substance by the reporting date shown... 

EPA OTS Preliminary assessment information rul e Health and safety data reporting rul e Final test rule... 

Other TSCA information gathering requirements are triggered by a chemical s appearance on the Priority Testing List. The Preliminary Assessment Information Reporting (PAIR) regulations mandate that EPA require manufacturers and importers to submit PAIR information on chemicals that the ITC recommends for consideration. The PAIR rule requires a quick and dirty collection of readily obtainable information on a chemical s use and properties. Similarly, the 8(d) health and safety study regulations require... 

Fed. Reg. 57439 (Sept. 29, 2006) Withdrawal of Certain Chemical Substances from Preliminary Assessment Information Reporting and Health and Safety Data Reporting Rules 71 FR 57439 HPV 9-29-06... 

Despite all of this, IB methods are very popular, because they are simple and can provide a quick estimate of the main sources of line broadening. When properly used, IB methods can also be rather informative and resolutive." However, as a general rule, IB methods should be regarded only as simple and useful tools for a qualitative, preliminary assessment of the main sources of line broadening. 

The only subsequent regulatory development thus far under TOSCA, directed specifically at soluble silicates, was a proposed rule (54) under Section 8(a) which would require manufacturers to keep certain records and report production and exposure related data on approximately 2300 chemicals to EPA. This information was held to be necessary to rank chemicals for investigation and to make preliminary risk assessments. Sodium silicate, potassium silicate, sodium metasilicate and sodium orthosilicate were included on the candidate list, presumably because reports to the initial inventory showed them to be manufactured in high tonnage volume. 

The information to be included on the form is intended to gather very preliminary exposure data to permit the Agency to assess testing priorities.i When promulgated in 1980, PAIR was intended by EPA to be the first of a series of progressively more detailed reporting rules under TSCA 8(a) to establish a comprehensive assessment of chemical substances."... 

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