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Notice of Filing a Pesticide Petition to Establish a Tolerance fora Certain Pesticide Chemical in or on Food
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[Federal Register: May 23, 2001 (Volume 66, Number 100)] [Notices] [Page 28482-28487] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr23my01-75] ----------------------------------------------------------------------- ENVIRONMENTAL PROTECTION AGENCY [PF-1023; FRL-6782-5] Notice of Filing a Pesticide Petition to Establish a Tolerance fora Certain Pesticide Chemical in or on Food AGENCY: Environmental Protection Agency (EPA). ACTION: Notice. ----------------------------------------------------------------------- SUMMARY: This notice announces the initial filing of a pesticide petition proposing the establishment of regulations for residues of a certain pesticide chemical in or on various food commodities. DATES: Comments, identified by docket control number PF-1023, must be received on or before June 22, 2001. ADDRESSES: Comments may be submitted by mail, electronically, or in person. Please follow the detailed instructions for each method as provided in Unit I.C. of the SUPPLEMENTARY INFORMATION. To ensure proper receipt by EPA, it is imperative that you identify docket control number PF-1023 in the subject line on the first page of your response. FOR FURTHER INFORMATION CONTACT: By mail: Joseph M. Tavano, Registration Division (7505C), Office of Pesticide Programs, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460; telephone number: (703) 308-8375; e-mail address: tavano.joseph@epa.gov. SUPPLEMENTARY INFORMATION: I. General Information A. Does this Action Apply to Me? You may be affected by this action if you are an agricultural producer, food manufacturer or pesticide manufacturer. Potentially affected categories and entities may include, but are not limited to: ------------------------------------------------------------------------ Examples of Categories NAICS codes potentially affected entities ------------------------------------------------------------------------ Industry 111 Crop production 112 Animal production 311 Food manufacturing 32532 Pesticide manufacturing ------------------------------------------------------------------------ This listing is not intended to be exhaustive, but rather provides a guide for readers regarding entities likely to be affected by this action. Other types of entities not listed in the table could also be affected. The North American Industrial Classification System (NAICS) codes have been provided to assist you and others in determining whether or not this action might apply to certain entities. If you have questions regarding the applicability of this action to a particular entity, consult the person listed under FOR FURTHER INFORMATION CONTACT. B. How Can I Get Additional Information, Including Copies of this Document and Other Related Documents? 1. Electronically. You may obtain electronic copies of this document, and certain other related documents that might be available electronically, from the EPA Internet Home Page at http://www.epa.gov/. To access this document, on the Home Page select ``Laws and Regulations'' and then look up the entry for this document under the ``Federal Register--Environmental Documents.'' You can also go directly to the Federal Register listings at http://www.epa.gov/fedrgstr/. 2. In person. The Agency has established an official record for this action under docket control number PF-1023. The official record consists of the documents specifically referenced in this action, any public comments received during an applicable comment period, and other information related to this action, including any information claimed as confidential business information (CBI). This official record includes the documents that are physically located in the docket, as well as the documents that are referenced in those documents. The public version of the official record does not include any information claimed as CBI. The public version of the official record, which includes printed, paper versions of any electronic comments submitted during an applicable comment period, is available for inspection in the Public Information and Records Integrity Branch (PIRIB), Rm. 119, Crystal Mall #2, 1921 Jefferson Davis Highway, Arlington, VA, from 8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays. The PIRIB telephone number is (703) 305-5805. C. How and to Whom Do I Submit Comments? You may submit comments through the mail, in person, or electronically. To ensure proper receipt by EPA, it is imperative that you identify docket control number PF-1023 in the subject line on the first page of your response. 1. By mail. Submit your comments to: Public Information and Records Integrity Branch (PIRIB), Information Resources and Services Division (7502C), Office of Pesticide Programs (OPP), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460. 2. In person or by courier. Deliver your comments to: Public Information and Records Integrity Branch (PIRIB), Information Resources and Services Division (7502C), Office of Pesticide Programs (OPP), Environmental Protection Agency, Rm. 119, Crystal Mall #2, 1921 Jefferson Davis Highway, Arlington, VA. The PIRIB is open from 8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays. The PIRIB telephone number is (703) 305-5805. 3. Electronically. You may submit your comments electronically by e-mail to: opp-docket@epa.gov, or you can submit a computer disk as described above. Do not submit any information electronically that you consider to be CBI. Avoid the use of special characters and any form of encryption. Electronic submissions will be accepted in WordPerfect 6.1/ 8.0 or ASCII file format. All comments in electronic form must be identified by docket control number PF-1023. Electronic comments may also be filed online at many Federal Depository Libraries. D. How Should I Handle CBI That I Want to Submit to the Agency? Do not submit any information electronically that you consider to be CBI. You may claim information that you submit to EPA in response to this document as CBI by marking any part or all of that information as CBI. Information so marked will not be disclosed except in accordance with procedures set forth in 40 CFR part 2. In addition to one complete version of the comment that includes any information claimed as CBI, a copy of the comment that does not contain the information claimed as CBI must be submitted for inclusion in the public version of the official record. Information not marked confidential will be included in the public version of the official record without prior notice. If you have any questions about CBI or the procedures for claiming CBI, please consult the person identified under FOR FURTHER INFORMATION CONTACT. E. What Should I Consider as I Prepare My Comments for EPA? You may find the following suggestions helpful for preparing your comments: 1. Explain your views as clearly as possible. 2. Describe any assumptions that you used. 3. Provide copies of any technical information and/or data you used that support your views. 4. If you estimate potential burden or costs, explain how you arrived at the estimate that you provide. 5. Provide specific examples to illustrate your concerns. [[Page 28484]] 6. Make sure to submit your comments by the deadline in this notice. 7. To ensure proper receipt by EPA, be sure to identify the docket control number assigned to this action in the subject line on the first page of your response. You may also provide the name, date, and Federal Register citation. II. What Action is the Agency Taking? EPA has received a pesticide petition as follows proposing the establishment and/or amendment of regulations for residues of a certain pesticide chemical in or on various food commodities under section 408 of the Federal Food, Drug, and Cosmetic Act (FFDCA), 21 U.S.C. 346a. EPA has determined that this petition contains data or information regarding the elements set forth in section 408(d)(2); however, EPA has not fully evaluated the sufficiency of the submitted data at this time or whether the data support granting of the petition. Additional data may be needed before EPA rules on the petition. List of Subjects Environmental protection, Agricultural commodities, Feed additives, Food additives, Pesticides and pests, Reporting and recordkeeping requirements. Dated: May 11, 2001. Richard P. Keigwin, Jr., Acting, Director, Registration Division, Office of Pesticide Programs. Summary of Petition The petitioner summary of the pesticide petition is printed below as required by section 408(d)(3) of the FFDCA. The summary of the petition was prepared by the petitioner and represents the view of the petitioner. EPA is publishing the petition summary verbatim without editing it in any way. The petition summary announces the availability of a description of the analytical methods available to EPA for the detection and measurement of the pesticide chemical residues or an explanation of why no such method is needed. Rohm and Haas Company 1F6259 EPA has received a pesticide petition (1F6259) from Rohm and Haas Company, 100 Independence Mall West, Philadelphia, PA 19106-2399 proposing, pursuant to section 408(d) of the FFDCA, 21 U.S.C. 346a(d), to amend 40 CFR part 180 by establishing a tolerance for residues of methoxyfenozide benzoic acid, 3-methoxy-2-methyl-,2-(3,5- dimethylbenzoyl)-2-(1,1-dimethylethyl) hydrazide in or on the raw agricultural commodity stone fruits crop group and prunes at 5 and 7 parts per million (ppm) respectively. EPA has determined that the petition contains data or information regarding the elements set forth in section 408(d)(2) of the FFDCA; however, EPA has not fully evaluated the sufficiency of the submitted data at this time or whether the data support granting of the petition. Additional data may be needed before EPA rules on the petition. A. Residue Chemistry 1. Plant metabolism. The qualitative nature of methoxyfenozide residues in plants and animals is adequately understood and was previously published in the Federal Register of July 5, 2000 (65 FR 41355) (FRL-6496-5). 2. Analytical method. An high performance liquid chromotography using ultra-violet detection (HPLC/UV) method TR 34-00-109 for the enforcement of tolerances in stone fruits has been developed. Confirmatory method validation data have been submitted for this method. The validated limit of quantitation (LOQ) of the analytical method was 0.02 ppm in all matrices for methoxyfenozide. 3. Magnitude of residues. Geographically representative field trials with methoxyfenozide 80WP and 2F formulations were conducted to support the proposed crop group tolerance for the stone fruit representative crops peaches, plums and cherries. The results of the field trials indicate that residues of methoxyfenozide will not exceed the proposed crop group tolerance of 5.0 ppm for stone fruits or 7.0 ppm for prunes. B. Toxicological Profile The toxicological profile and endpoints for methoxyfenozide which supports this petition to establish tolerances were previously published in the Federal Register of July 5, 2000 (65 FR 41355). B. Aggregate Exposure 1. Dietary exposure--i. Food. Acute exposure and risk. Acute dietary risk assessments are performed for a food-use pesticide if a toxicological study has indicated the possibility of an effect of concern occurring as a result of a 1-day or single exposure. No appropriate toxicological endpoint attributable to a single exposure was identified in the available toxicology studies on methoxyfenozide including the acute neurotoxicity study in rats, the developmental toxicity study in rats and the developmental toxicity study in rabbits. Since no acute toxicological endpoints were established, Rohm and Haas considers acute aggregate risk to be negligible. Rohm and Haas used the Dietary Exposure Evaluation Model\TM\ (DEEM) V.7.075; Novigen Sciences, Washington, DC) software for conducting a chronic dietary (food) risk analysis. DEEM is a dietary exposure analysis system that is used to estimate exposure to a pesticide chemical in foods comprising the diets of the U.S. population, including population subgroups. DEEM contains food consumption data as reported by respondents in the USDA continuing surveys of food intake by individuals conducted in 1994-1996. Rohm and Haas assumed 100% of crops would be treated and contain methoxyfenozide residues at the tolerance level. The following tolerance levels were used in the analysis: ------------------------------------------------------------------------ Commodity Tolerance level, ppm ------------------------------------------------------------------------ Bulb vegetables 0.1 ppm ------------------------------------------------------------------------ Corn, aspirated grain fractions 1.0 ppm ------------------------------------------------------------------------ Corn, field, forage 15 ppm ------------------------------------------------------------------------ Corn, field, grain 0.05 ppm ------------------------------------------------------------------------ Corn, field, stover (fodder) 105 ppm ------------------------------------------------------------------------ Corn, oil 0.2 ppm ------------------------------------------------------------------------ Corn, silage 5.0 ppm ------------------------------------------------------------------------ Corn, sweet, forage 30 ppm ------------------------------------------------------------------------ Corn, sweet (K+CWHR) 0.05 ppm ------------------------------------------------------------------------ Corn, sweet, stover (fodder) 60 ppm ------------------------------------------------------------------------ Cotton, undelinted seed 2.0 ppm ------------------------------------------------------------------------ Fat* 0.5 ppm ------------------------------------------------------------------------ Fruiting vegetables 2.0 ppm ------------------------------------------------------------------------ Grapes 1.0 ppm ------------------------------------------------------------------------ Head and stem brassica (5A) 6.5 ppm ------------------------------------------------------------------------ Herbs and spices 8 ppm ------------------------------------------------------------------------ Leaf petioles (4B) 10.0 ppm ------------------------------------------------------------------------ Leafy brassica greens (5B) 20.0 ppm [[Page 28485]] ------------------------------------------------------------------------ Leafy vegetables (4A) 25 ppm ------------------------------------------------------------------------ Leaves of root and tuber vegetables 0.1 ppm ------------------------------------------------------------------------ Legume vegetables 0.05 ppm ------------------------------------------------------------------------ Liver 0.4 ppm ------------------------------------------------------------------------ Meat* 0.02 ppm ------------------------------------------------------------------------ Meat byproducts* (except liver) 0.1 ppm ------------------------------------------------------------------------ Milk 0.1 ppm ------------------------------------------------------------------------ Pome fruit 1.5 ppm ------------------------------------------------------------------------ Prunes 7.0 ppm ------------------------------------------------------------------------ Raisins 1.5 ppm ------------------------------------------------------------------------ Root and tuber vegetables 0.05 ppm ------------------------------------------------------------------------ Stone fruits 5.0 ppm ------------------------------------------------------------------------ * Of cattle, goats, hogs, horses, and sheep. Processing factors were also applied to grape juice (1.2x), grape juice concentrate (3.6x), apple juice/cider (1.3x), apple juice concentrate (3.9x), dried apples (8x), dried pears (6.25x), tomato juice (1.5x), tomato puree (3.3x), tomato paste (5.4x), tomato catsup (2.5x), dried tomatoes (14.3x), dehydrated onions (9x), white dry potatoes (6.5x), sprouted soybean seeds (0.33x), corn grain sugar (high fructose corn syrup; 1.5x), dried beef (1.92x), dried veal (1.92x), dried apricots (6.0x), dried cherries (4.0x), cherry juice (1.5x), dried peaches (7.0x), dried plums (5.0x), and plum/prune juice (1.4x). The processing factors are default values from DEEM. As shown in the following table, the resulting dietary food exposures occupy up to 37.6% of the chronic population adjusted dose (PAD) for the most highly exposed population subgroup, children 1 to 6 years old. These results should be viewed as conservative (health protective) risk estimates. Refinements such as use of percent crop- treated information and/or anticipated residue values would yield even lower estimates of chronic dietary exposure. Summary: Chronic Dietary Exposure Analysis by DEEM (Tier 1) ------------------------------------------------------------------------ Exposure milligram/ Population subgroup kilogram/day (mg/ Percent of chronic kg/day) PAD ------------------------------------------------------------------------ U.S. population--48 contiguous 0.0189 18.9 States ------------------------------------------------------------------------ All infants (<1-year) 0.0315 31.5 ------------------------------------------------------------------------ Nursing infants <1-year old 0.0134 13.4 ------------------------------------------------------------------------ Non-nursing infants <1-year old 0.0368 36.8 ------------------------------------------------------------------------ Children 1 to 6 years old 0.0376 37.6 ------------------------------------------------------------------------ Children 7 to 12 years old 0.0216 21.6 ------------------------------------------------------------------------ Females 13+ (nursing) 0.0156 19.1 ------------------------------------------------------------------------ U.S. population (autumn season) 0.0191 19.1 ------------------------------------------------------------------------ U.S. population (spring season) 0.0190 19.0 ------------------------------------------------------------------------ Northeast region 0.0206 20.6 ------------------------------------------------------------------------ Western region 0.0210 21.0 ------------------------------------------------------------------------ Hispanics 0.0191 19.1 ------------------------------------------------------------------------ Non-Hispanic/non-white/non-black 0.0249 24.8 ------------------------------------------------------------------------ Percent chronic PAD = (Exposure divided by chronic PAD) x 100%. The subgroups listed are: 1. The U.S. population (total). 2. Those for infants and children. 3. The other subgroup(s), if any, for which the percentage of the chronic PAD occupied is greater than that occupied by the subgroup U.S. population (total). 4. The most highly exposed of the females subgroups (in this case, females, (13+ years, nursing). ii. Drinking water. There are no water-related exposure data from monitoring to complete a quantitative drinking water exposure analysis and risk assessment for methoxyfenozide. Generic expected environmental concentration (GENEEC) and/or EPA's pesticide root zone model/exposure analysis modeling system (PRZM/EXAMS) (both produce estimates of pesticide concentration in a farm pond) are used to generate estimated environmental concentrations (EECs) for surface water and screening concentration in ground water (SCI-GROW) (an empirical model based upon actual monitoring data collected for a number of pesticides that serve as benchmarks) predicts EECs in ground water. These models take into account the use patterns and the environmental profile of a pesticide, but do not include consideration of the impact that processing raw water for distribution as drinking water would likely have on the removal of pesticides from the source water. The primary use of these models at this stage is to provide a coarse screen for assessing whether a pesticide is likely to be present in drinking water at concentrations which would exceed human health levels of concern. A drinking water level of comparison (DWLOC) is the concentration of a pesticide in drinking water that would be acceptable as a theoretical upper limit in light of total aggregate exposure to that pesticide from food, water, and residential uses. HED uses DWLOCs internally in the risk assessment process as a surrogate measure of potential exposure associated with pesticide exposure through drinking water. In the absence of monitoring data for a pesticide, the DWLOC is used as a point of comparison against the conservative EECs provided by computer modeling (SCI-GROW, GENEEC, PRZM/EXAMS). a. Acute exposure and risk. Because no acute dietary endpoint was determined, Rohm and Haas concludes that there is a reasonable certainty of no harm from acute exposure from drinking water. b. Chronic exposure and risk. Tier II screening-level assessments can be conducted using the simulation models SCI-GROW and PRZM/EXAMS to generate EECs for ground and surface water, respectively. The modeling was conducted based on the environmental profile and the maximum seasonal application rate proposed for methoxyfenozide (1.0 lb ai/acre/ season). PRZM/EXAMS was used to generate the surface water EECs, because it can factor the persistent nature of the chemical into the estimates. The EECs for assessing chronic aggregate dietary risk used by HED are 6 parts per billion (ppb) (in ground water, based on SCI-GROW) and 98.5 parts per billion (ppb) (in surface water, based on the PRZM/ EXAMS, long-term mean).The back-calculated DWLOCs for [[Page 28486]] assessing chronic aggregate dietary risk range from 624 ppb for the most highly exposed population subgroup (children 1 to 6 years old) to 2,839 ppb for the U.S. population (48 contiguous States--all seasons). The SCI-GROW and PRZM/EXAMS chronic EECs are less than the Agency's level of comparison (the DWLOC value for each population subgroup) for methoxyfenozide residues in drinking water as a contribution to chronic aggregate exposure. Rohm and Haas thus concludes with reasonable certainty that residues of methoxyfenozide in drinking water will not contribute significantly to the aggregate chronic human health risk and that the chronic aggregate exposure from methoxyfenozide residues in food and drinking water will not exceed the Agency's level of concern (100% of the chronic PAD) for chronic dietary aggregate exposure by any population subgroup. EPA generally has no concern for exposures below 100% of the chronic PAD, because it is a level at or below which daily aggregate dietary exposure over a lifetime will not pose appreciable risks to the health and safety of any population subgroup. This risk assessment is considered high confidence, conservative, and very protective of human health. DWLOC for Chronic Exposure to Methoxyfenozide -------------------------------------------------------------------------------------------------------------------------------------------------------- Maximum water GENEEC 56-day Population subgroup Chronic PAD (mg/kg/ Food exposure (mg/ exposure (mg/kg/ SCI-GROW (µ Average (µ DWLOC (µg/ day) kg/day) day) g/L) g/L) L) -------------------------------------------------------------------------------------------------------------------------------------------------------- U.S. population-48 contiguous 0.0189 0.0811 2,839 states -------------------------------------------------------------------------------------------------------------------------------------------------------- Females 13+ (nursing) 0.0191 0.0809 2,427 -------------------------------------------------------------------------------------------------------------------------------------------------------- Non-nursing infants <1-year old 0.10 0.0368 0.0632 6 98.5 632 -------------------------------------------------------------------------------------------------------------------------------------------------------- Children 1 to 6 years old 0.0376 0.0624 624 -------------------------------------------------------------------------------------------------------------------------------------------------------- Children 7 to 12 years old 0.0216 0.0784 784 -------------------------------------------------------------------------------------------------------------------------------------------------------- Notes: Maximum water exposure (mg/kg/day) = chronic PAD (mg/kg/day) - chronic food exposure. DWLOC (µg/L) = (Maximum water exposure (mg/kg/d) x body weight (kg)) divided by (1/1,000 mg/µg x water consumed daily (L/day)). Body weights (kg) for adults is 70, for females 13+ is 60 kg and for all children is 10 kg. Drinking water consumption is 2 liters per day for adults and 1 liter per day for children. 2. Non-dietary exposure. Methoxyfenozide is not currently registered for use on any residential non-food sites. Therefore, there is no non-dietary acute, chronic, short- or intermediate-term exposure. D. Cumulative Effects Section 408(b)(2)(D)(v) requires that, when considering whether to establish, modify, or revoke a tolerance, the Agency consider ``available information'' concerning the cumulative effects of a particular pesticide's residues and ``other substances that have a common mechanism of toxicity.'' EPA does not have, at this time, available data to determine whether methoxyfenozide has a common mechanism of toxicity with other substances or how to include this pesticide in a cumulative risk assessment. Unlike other pesticides for which EPA has followed a cumulative risk approach based on a common mechanism of toxicity, methoxyfenozide does not appear to produce a toxic metabolite produced by other substances. For the purposes of this tolerance action, therefore, it is assumed that methoxyfenozide does not have a common mechanism of toxicity with other substances. E. Safety Determination 1. U.S. population. Using the DEEM exposure assumptions described in this unit, Rohm and Haas has concluded that aggregate exposure to methoxyfenozide from food will utilize 18.9% of the chronic PAD for the U.S. population. The major identifiable subgroup with the highest aggregate exposure is children 1 to 6 years old at 37.6% of the chronic PAD and is discussed below. EPA generally has no concern for exposures below 100% of the chronic PAD because the chronic PAD represents the level at or below which daily aggregate dietary exposure over a lifetime will not pose appreciable risks to human health. Despite the potential for exposure to methoxyfenozide in drinking water, the aggregate exposure is not expected to exceed 100% of the chronic PAD. Rohm and Haas concludes that there is a reasonable certainty that no harm will result from aggregate exposure to methoxyfenozide residues. 2. Infants and children. In assessing the potential for additional sensitivity of infants and children to residues of methoxyfenozide, EPA considered data from developmental toxicity studies in the rat and rabbit and a 2-generation reproduction study in the rat. The developmental toxicity studies are designed to evaluate adverse effects on the developing organism resulting from maternal pesticide exposure during gestation. Reproduction studies provide information relating to effects from exposure to the pesticide on the reproductive capability of mating animals and data on systemic toxicity. FFDCA section 408 provides that EPA shall apply an additional ten- fold margin of safety for infants and children in the case of threshold effects to account for prenatal and postnatal toxicity and the completeness of the data base unless EPA determines that a different margin of safety will be safe for infants and children. Margins of safety are incorporated into EPA risk assessments either directly through use of a margin of exposure (MOE) analysis or through using uncertainty (safety) factors in calculating a dose level that poses no appreciable risk to humans. EPA believes that reliable data support using the standard uncertainty factor (UF) (usually 100 for combined interspecies and intraspecies variability) and not the additional ten- fold MOE/UF when EPA has a complete data base under existing guidelines and when the severity of the effect in infants or children or the potency or unusual toxic properties of a compound do not raise [[Page 28487]] concerns regarding the adequacy of the standard MOE/safety factor. The toxicology data base for methoxyfenozide included acceptable developmental toxicity studies in both rats and rabbits as well as a 2- generation reproductive toxicity study in rats. The data provided no indication of increased sensitivity of rats or rabbits to in utero and/ or postnatal exposure to methoxyfenozide. There is a complete toxicity data base for methoxyfenozide and exposure data are complete or are estimated based on data that reasonably accounts for potential exposures. Based on the completeness of the data base and the lack of prenatal and postnatal toxicity, EPA determined that an additional safety factor was not needed for the protection of infants and children. Since no acute toxicological endpoints were established, acute aggregate risk is considered to be negligible. Using the exposure assumptions described in this unit, Rohm and Haas has concluded that aggregate exposure to methoxyfenozide from food will utilize 37.6% of the cPAD for infants and children. EPA generally has no concern for exposures below 100% of the cPAD because the cPAD represents the level at or below which daily aggregate dietary exposure over a lifetime will not pose appreciable risks to human health. Despite the potential for exposure to methoxyfenozide in drinking water, Rohm and Haas does not expect the aggregate exposure to exceed 100% of the cPAD. Short and intermediate term risks are judged to be negligible due to the lack of significant toxicological effects observed. Based on these risk assessments, Rohm and Haas concludes that there is a reasonable certainty that no harm will result to infants and children from aggregate exposure to methoxyfenozide residues. F. International Tolerances There are no established or proposed Codex, Canadian or Mexican limits for residues of methoxyfenozide in/on plant or animal commodities. Therefore, no compatibility issues exist with regard to the proposed U.S. tolerances. [FR Doc. 01-12904 Filed 5-22-01; 8:45 am] BILLING CODE 6560-50-S