Page 1 of 21 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D. C. 20460 OFFICE OF PREVENTION, PESTICIDES, AND TOXIC SUBSTANCES MEMORANDUM Date: November 18, 2005 Subject: Triadimenol. Acute and Chronic Dietary Exposure Assessments for the Tolerance Reassessment Eligibility Decision ( TRED) Document.

DP Barcode: D314928 PC Code: 127201 40 CFR § : 180.450 Chemical Class: Azole From: Samuel Ary, Chemist Reregistration Branch II Health Effects Division ( 7509C)

Through: Thurston Morton, Chemist David Soderberg, Chemist Dietary Exposure Science Advisory Council ( DESAC) Health Effects Division ( 7509C)

William Hazel, Branch Chief Reregistration Branch II Health Effects Division ( 7509C)

To: Richard Griffin, Risk Assessor Christina Jarvis, Risk Assessor Reregistration Branch II Health Effects Division ( 7509C)

John Pates, Chemical Review Manager Reregistration Branch I Special Review and Reregistration Division ( 7508C) Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 2 of 21 Executive Summary Acute and chronic dietary ( food and water) exposure assessments were conducted using the Dietary Exposure Evaluation Model software with the Food Commodity Intake Database ( DEEM FCID   , Version 2.03), which uses food consumption data from the USDA's Continuing Surveys of Food Intakes by Individuals ( CSFII) from 1994 1996 and 1998. The acute and chronic dietary risk assessments were conducted for all supported triadimenol food uses and were performed to support the tolerance reassessment eligibility decision document.

Triadimenol, $( 4 chlorophenoxy)"( 1,1 dimethylethyl) 1H 1,2,4 triazole 1 ethanol, is a systemic fungicide registered for use in the United States as a seed treatment for barley, corn, cotton, oats, rye, and wheat. Additionally, an import tolerance on bananas has been established. Triadimenol end use products are marketed in the U. S. under the trade name Baytan ® . The reregistration of triadimenol is being supported by Bayer CropScience, the basic producer.

Acute Dietary Exposure Results and Characterization of Input Data A refined acute dietary exposure assessment was conducted to estimate the dietary risks associated with the reregistration of triadimenol. The acute dietary exposure assessment incorporated a DEEM Version 7.81 default processing factor for dried bananas along with the available data from the processing studies and 100% crop treated. The anticipated residue ( AR) estimate for bananas is based on the available field trial data while incorporating existing tolerance values for the remaining commodities. The assessment also included the peak surface water concentration. Acute dietary risk estimates are provided for the general U. S. population and various population subgroups, with the major emphasis placed on the exposure estimates for infants and children. This assessment concludes that for all supported commodities, the acute dietary risk estimates do not exceed HED's level of concern ( less than 100% of the aPAD) at the 95th exposure percentile for the U. S. population ( 15% of the aPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 29% of the aPAD.

Chronic Dietary Exposure Results and Characterization of Input Data A conservative chronic dietary exposure assessment was conducted to estimate the dietary risks associated with the reregistration of triadimenol. The chronic dietary exposure assessment incorporated a DEEM Version 7.81 default processing factor for dried bananas along with the available data from the processing studies. Existing tolerance level residues, 100% crop treated, and the highest 1 in 10 year annual mean drinking water concentration were used to conduct this conservative assessment. Chronic dietary risk estimates are provided for the general U. S. population and various population subgroups, with the major emphasis placed on the exposure estimates for infants and children. This assessment concludes that for all supported commodities, the chronic dietary risk estimates do not exceed HED's level of concern ( less than 100% of the cPAD) for the U. S. population ( 7% of the cPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 23% of the cPAD.

Aggregate Exposure to Triadimefon and Triadimenol Exposure to triadimenol can occur following the application of triadimenol as an active ingredient Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 3 of 21 as well as from the metabolism/ degradation of triadimefon. The current dietary risk assessment only addresses the use of triadimenol as an active ingredient per se. Exposures from the pesticidal uses of triadimenol have not been aggregated with triadimenol exposures reflecting metabolism and/ or degradation of triadimefon because risks attributable to uses of triadimefon already exceed HED's level of concern ( S. Ary, D314778, 11/ 23/ 2005) and because the resulting apparent increase in aggregate risk would unduly be associated with the registered uses of triadimenol. The Agency is soliciting comments on assumptions used in the current risk assessment. Should refinements be possible in the future, it may be appropriate to aggregate multiple routes and sources of exposures for these chemicals.

I. Introduction Dietary risk assessment incorporates both exposure and toxicity of a given pesticide. For acute and chronic assessments, the risk is expressed as a percentage of a maximum acceptable dose ( i. e., the dose which the Health Effects Division has concluded will result in no unreasonable adverse health effects). This dose is referred to as the population adjusted dose ( PAD). The PAD is equivalent to the Reference Dose ( RfD) divided by the special FQPA Safety Factor.

For acute and non cancer chronic exposures, HED is concerned when estimated dietary risk exceeds 100% of the PAD. References which discuss the acute and chronic dietary risk assessments in more detail are available on the EPA pesticides web site: " Available Information on Assessing Exposure from Pesticides, A User's Guide," 6/ 21/ 2000, web link: http:// www. epa. gov/ fedrgstr/ EPA PEST/ 2000/ July/ Day 12/ 6061. pdf; or see SOP 99.6 ( 8/ 20/ 1999).

II. Residue Information The reregistration requirements for plant metabolism have not been fulfilled. No metabolism studies with triadimenol have been submitted, however, metabolism studies with triadimefon have been received and reviewed. HED has determined that translation of metabolism data from triadimefon to triadimenol is not appropriate for the existing uses on cereal grains and cotton. The metabolism studies with triadimefon were conducted using a foliar application and triadimenol is used only as a seed treatment. Additionally, in the submitted triadimenol seed treatment wheat study, residues were not identifiable due to the low activity found in wheat grain. Therefore, HED concludes that the nature of the residue in cereal grains is not adequately understood; however, based on chemical structure and the probable metabolic pathway of triadimenol, the residues of concern for tolerance expression and risk assessment are likely to be triadimenol, KWG 1342, and KWG 1732 in/ on cereal grains ( barley, corn, oats, rye, and wheat) and cotton. The wheat metabolism data conducted with triadimefon indicate that KWG 1732 is the major metabolite found in grain at 35% TRR and KWG 1342 at 21% TRR in grain. Triadimenol accounted for 12% TRR. It is also noted that the submitted wheat processing study conducted with triadimenol applied as a seed treatment identified quantifiable residues of KWG 1732. There have been no previous triazole labeled studies conducted with triadimenol applied as a seed treatment to commodities and data from the available soil metabolism studies conducted with triadimefon indicate that soil microbes metabolize the triazole fungicide to free triazole, which may be taken up into the plant. Separate metabolism studies with triazole 14C and phenyl 14C labeled triadimenol applied as a seed treatment to corn or wheat and cotton should be Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 4 of 21 Cl O N N N OH Cl O N N N OH OH conducted to confirm the residues of concern.

The residues of concern for tolerance expression and risk assessment for bananas are triadimenol and KWG 1342, which are based on the available metabolism data conducted with triadimefon applied to an established grape vine and the field trial data conducted with triadimenol applied to the soil of banana groves. The metabolism data conducted with triadimefon applied to grapes indicate that triadimenol is the major metabolite identified at 56% along with KWG 1342 at 16%. The available field trial data indicate that residues of triadimenol and KWG 1342 are both likely to be found in/ on bananas.

HED has determined that only triadimenol in drinking water should be considered in the dietary risk assessment; it was the major residue found in the available triadimefon aerobic soil metabolism study ( MRID 41686102).

Triadimenol is not registered for use as a direct livestock treatment. The nature of the residue in livestock is adequately defined for the current uses. HED concludes that the supported uses on barley, corn, cotton, oats, rye, and wheat result in a 40 CFR § 180.6( a)( 3) situation for ruminant commodities; i. e., there is no reasonable expectation of finite residues in ruminant commodities. The structure of triadimenol and metabolites of concern are presented in Table 1. Summary of the decisions concerning the residues of concern in plants and drinking water are presented below in Table 2.

Table 1. Chemical Names and Structures of Triadimenol and Its Metabolites.

Common name and chemical name Chemical structure Triadimenol ( KWG 0519)

$( 4 chlorophenoxy)"( 1,1 dimethylethyl) 1H 1,2,4 triazole 1 ethanol KWG 1342 1( 4 chlorophenoxy) 3,3 dimethyl 3 hydroxymethyl 1( 1H 1,2,4 triazol 1 yl) 2 butanol Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Table 1. Chemical Names and Structures of Triadimenol and Its Metabolites.

Common name and chemical name Chemical structure Page 5 of 21 Cl O N N N O OH KWG 1732 1( 4 chlorophenoxy) 1( 1H 1,2,4 triazol 1 yl) ethanoic acid Table 2. Summary of Metabolites and Degradates to be Included in the Risk Assessment and Tolerance Expression for Triadimenol.

Matrix Residues Included in Risk Assessment Residues Included in Tolerance Expression Plants Primary crop  cereal grains and cotton triadimenol, KWG 1342, and KWG 1732 triadimenol, KWG 1342, and KWG 1732 Primary crop  banana triadimenol and KWG 1342 triadimenol and KWG 1342 Rotational crop triadimenol, KWG 1342, and KWG 1732 triadimenol, KWG 1342, and KWG 1732 Livestock Ruminant NA NA Poultry NA NA Drinking water triadimenol NA A summary of the triadimenol tolerance reassessment and recommended modifications in commodity definitions is presented in Table 3 ( S. Ary, D314891, 11/ 17/ 2005).

Table 3. Tolerance Reassessment Summary for Triadimenol.

Commodity Current Tolerance, ppm Reassessed Tolerance, ppm Comment [ Correct Commodity Definition]

Tolerances Established Under 40 CFR § 180.450 ( a)

Banana ( whole) 1 0.2 0.2 Barley, grain 0.05 TBD2,3 Barley, straw 0.2 TBD Corn, forage 0.05 TBD [ Corn, field, forage] [ Corn, sweet, forage]

Corn, fresh ( including sweet), ( K+ CWHR) 0.05 TBD [ Corn, sweet, K+ CWHR]

Corn, grain 0.05 TBD [ Corn, field, grain] [ Corn, pop, grain] Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Table 3. Tolerance Reassessment Summary for Triadimenol.

Commodity Current Tolerance, ppm Reassessed Tolerance, ppm Comment [ Correct Commodity Definition]

Page 6 of 21 Corn, stover 0.05 TBD [ Corn, field, stover] [ Corn, pop, stover] [ Corn, sweet, stover]

Cotton, forage 0.02 Revoke No longer considered a significant livestock feed item.

Cotton, undelinted seed 0.02 TBD Oat, forage 2.5 TBD Oat, grain 0.05 TBD Oat, straw 0.2 TBD Rye, forage 2.5 TBD Rye, grain 0.05 TBD Rye, straw 0.1 TBD Sorghum, forage, hay 0.05 Revoke Bayer does not intend to support use of triadimenol on sorghum.

Sorghum, grain 0.01 Revoke Bayer does not intend to support use of triadimenol on sorghum.

Sorghum, grain, stover 0.01 Revoke Bayer does not intend to support use of triadimenol on sorghum.

Wheat, forage 2.5 TBD Wheat, grain 0.05 TBD Wheat, straw 0.2 TBD Tolerances Established Under 40 CFR § 180.450 ( b)

Cattle, fat 0.1 Revoke The available data indicate that tolerances for cattle commodities are not required. Cattle, meat 0.1 Cattle, meat byproducts 0.1 Egg 0.01 Revoke The available data indicate that a tolerance for eggs is not required.

Goat, fat 0.1 Revoke The available data indicate that tolerances for goat commodities are not required. Goat, meat 0.1 Goats, meat byproducts 0.1 Hog, fat 0.1 Revoke The available data indicate that tolerances for hog commodities are not required. Hog, meat 0.1 Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Table 3. Tolerance Reassessment Summary for Triadimenol.

Commodity Current Tolerance, ppm Reassessed Tolerance, ppm Comment [ Correct Commodity Definition]

Page 7 of 21 Hog, meat byproducts 0.1 Horse, fat 0.1 Revoke The available data indicate that tolerances for horse commodities are not required. Horse, meat 0.1 Horse, meat byproducts 0.1 Milk 0.01 Revoke The available data indicate that a tolerance for milk is not required.

Poultry, fat 0.01 Revoke The available data indicate that tolerances for poultry commodities are not required. Poultry, meat 0.01 Poultry, meat byproducts 0.01 Sheep, fat 0.1 Revoke The available data indicate that tolerances for sheep commodities are not required. Sheep, meat 0.1 Sheep, meat byproducts 0.1 Tolerances To Be Proposed Under 40 CFR § 180.450 ( a)

Barley, hay None established TBD Cotton, gin byproducts None established TBD Oat, hay None established TBD Wheat, hay None established TBD 1. 40 CFR § 180.450( a) states that there are no U. S. registrations for banana ( whole) as of 9/ 22/ 93. 2. TBD = To be determined. 3. Crop field trial data depicting residues of triadimenol, KWG 1342, and KWG 1732 in/ on field corn ( forage, grain, stover), sweet corn ( forage, K+ CWHR, grain, and stover), cotton ( undelinted seed and gin byproducts), and wheat ( forage, grain, hay, and straw) grown from seed treated at the maximum rate are required pending the results from the requested metabolism studies.

Residue Data used for Acute and Chronic Dietary Assessments The anticipated residue estimates for the acute dietary assessment are based on the available field trial data for bananas while incorporating existing tolerance values for the remaining commodities. A residue distribution file ( RDF) was used for bananas along with 100% CT. Tolerance values were used for barley, corn, cotton, oats, rye, and wheat to likely account for all residues of concern ( triadimenol, KWG 1342, and KWG 1732), since field trial studies sampled for triadimenol and KWG 1342 only. The average residue from the submitted field trials conducted with wheat ( MRID 42712101) is 0.0125 ppm ( higher than the field trials conducted with barley and oats). If the available metabolism data for wheat grain is considered ( 35% of KWG 1732 was identified, triadimenol was found at 6%, and KWG 1342 at 21%), the highest average residue expected for KWG 1732 would be 0.0162 ppm, thus yielding a total residue of 0.03 ppm ( 0.0125 Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 8 of 21 ppm + 0.0162 ppm), which is less than the existing tolerance of 0.05 ppm. Crop field trial data depicting the potential for concentration of triadimenol residues of concern in/ on field corn processed commodities ( MRID 44519801) and cotton processed commodities ( MRID 44519802) indicate that residues of triadimenol, KWG 1342, and KWG 1732 were nonquantifiable (< 0.05 for corn and < 0.02 for cotton) following treatment at 5x the maximum application rate. Additionally, the field trial data submitted for corn and cotton demonstrate that residues of triadimenol and KWG 1342 were less than the method LOD of 0.01 for corn grain and cotton seed. Therefore, using tolerance values for corn grain ( 0.05 ppm) and cotton seed ( 0.02 ppm) are not expected to underestimate exposure. Tolerance values were used for the chronic dietary assessment.

Processing Factors Data from the processing studies were used in this assessment for several commodities along with a DEEM Version 7.81 default processing factor for dried banana ( 3.9x). Processing studies for field corn and cotton indicate that residues of triadimenol, KWG 1342, and KWG 1732 were nonquantifiable following treatment at 5x the maximum application rate; therefore, processing studies for these commodities were not conducted. A processing factor of 2.1x was utilized for barley, oat, and wheat bran. All other processed commodities showed little or no concentration in the available processing studies. For detailed considerations of processing factors see " Triadimenol. Summary of Analytical Chemistry and Residue Data for the Tolerance Reassessment Eligibility Decision ( TRED) Document" under guideline section 860.1520 ( S. Ary, D314891, 11/ 17/ 2005).

Usage Information No usage data are available for triadimenol, so 100% crop treated were assumed for all commodities.

Residue Estimates for Individual Crops The anticipated residue estimates for the acute dietary exposure assessment are based on the available field trial data for bananas while incorporating existing tolerance values for the remaining commodities. Existing tolerances were used for the chronic dietary exposure assessment. All triadimenol acute and chronic residue estimates for crop commodities are listed in Attachment 1.

III. Drinking Water Data The drinking water values used in the dietary risk assessment were provided by the Environmental Fate and Effects Division ( EFED) in the following memorandum: " TRED for Triadimenol ( PC # 127201) Drinking Water Assessment Environmental Fate and Effects Division" ( J. Breithaupt, D321519, 2/ 9/ 2005). Water residues were incorporated in the DEEM FCID   into the food categories " water, direct, all sources" and " water, indirect, all sources".

The estimated surface drinking water concentrations ( EDWCs) for triadimenol were moderately refined and calculated using PRZM ( Pesticide Root Zone Model) and EXAMS ( Exposure Analysis Modeling System) for use in the human health risk assessment. The estimated groundwater concentrations for triadimenol were unrefined and calculated using SCI GROW ( Screening Concentration In Ground Water), however, were not used in the assessment because Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 9 of 21 residues are shown to be much higher in surface water.

The EDWCs were calculated from the use of triadimenol as a seed treatment to wheat, corn, and cotton. The wheat scenario produced the highest concentrations and is used in this dietary assessment. Only triadimenol in drinking water is considered in the dietary risk assessment; it was the major residue found in the available triadimefon aerobic soil metabolism study. Other degradates ( e. g., CPMT or chlorophenoxymethyltriazole or 4 chlorophenoxy 1,2,4 triazol 1 ylmethane are not considered in this assessment because there is insufficient data on the specific rates and locales of formation and conditions under which formation occurs to evaluate secondary degradates as part of total triadimenol residues; however, based on current information, other degradates are not at this time considered to be essential components of this drinking water evaluation.

Acute Dietary Assessment The 30 year annual peak surface water concentration of 0.000393 ppm was used for the acute dietary assessment.

Chronic Dietary Assessment The 1 in 10 year annual mean surface water concentration of 0.000194 ppm was used for the chronic dietary assessment.

IV. DEEM FCID   Program and Consumption Information Triadimenol acute and chronic dietary exposure assessments were conducted using the Dietary Exposure Evaluation Model software with the Food Commodity Intake Database ( DEEMFCID   , Version 2.03), which incorporates consumption data from USDA's Continuing Surveys of Food Intakes by Individuals ( CSFII), 1994 1996 and 1998. The 1994 96, 98 data are based on the reported consumption of more than 20,000 individuals over two non consecutive survey days. Foods " as consumed" ( e. g., apple pie) are linked to EPA defined food commodities ( e. g. apples, peeled fruit  cooked; fresh or N/ S; baked; or wheat flour  cooked; fresh or N/ S, baked) using publicly available recipe translation files developed jointly by USDA/ ARS and EPA. For chronic exposure assessment, consumption data are averaged for the entire U. S. population and within population subgroups, but for acute exposure assessment are retained as individual consumption events. Based on analysis of the 1994 96, 98 CSFII consumption data, which took into account dietary patterns and survey respondents, HED concluded that it is most appropriate to report risk for the following population subgroups: the general U. S. population, all infants ( less than 1 year old), children 1 2, children 3 5, children 6 12, youth 13 19, adults 20 49, females 13 49, and adults 50+ years old.

For chronic dietary exposure assessment, an estimate of the residue level in each food or foodform ( e. g., orange or orange juice) on the food commodity residue list is multiplied by the average daily consumption estimate for that food/ food form to produce a residue intake estimate. The resulting residue intake estimate for each food/ food form is summed with the residue intake estimates for all other food/ food forms on the commodity residue list to arrive at the total average estimated exposure. Exposure is expressed in mg/ kg body weight/ day and as a percent of the Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 10 of 21 cPAD. This procedure is performed for each population subgroup.

For acute exposure assessments, individual one day food consumption data are used on an individual by individual basis. The reported consumption amounts of each food item can be multiplied by a residue point estimate and summed to obtain a total daily pesticide exposure for a deterministic exposure assessment, or " matched" in multiple random pairings with residue values and then summed in a probabilistic assessment. The resulting distribution of exposures is expressed as a percentage of the aPAD on both a user ( i. e., only those who reported eating relevant commodities/ food forms) and a per capita ( i. e., those who reported eating the relevant commodities as well as those who did not) basis. In accordance with HED policy, per capita exposure and risk are reported for all tiers of analysis. However, for tiers 1 and 2, any significant differences in user vs. per capita exposure and risk are specifically identified and noted in the risk assessment.

V. Toxicological Information A summary of the toxicological doses and endpoints selected for the dietary exposure assessments are provided in Table 4.

Table 4. Summary of Toxicological Doses and Endpoints for Triadimenol. 1,2 Exposure Scenario Dose Used in Risk Assessment, UF Special FQPA SF* and Level of Concern for Risk Assessment Study and Toxicological Effects Acute Dietary ( general population) NOAEL = 3.4 mg/ kg/ day UF = 1000 Acute RfD = 0.0034 mg/ kg/ day FQPA SF = 1X aPAD = acute RfD FQPA SF = 0.0034 mg/ kg/ day Subchronic neurotoxicity study in rats. LOAEL = 54.6/ 68.7 mg/ kg/ day based largely on hyperactivity.

Chronic Dietary ( all populations) NOAEL = 3.4 mg/ kg/ day UF = 1000 Acute RfD = 0.0034 mg/ kg/ day FQPA SF = 1X cPAD = chronic RfD FQPA SF = 0.0034 mg/ kg/ day Subchronic neurotoxicity study in rats. LOAEL = 54.6/ 68.7 mg/ kg/ day based largely on hyperactivity.

Cancer ( oral, dermal, inhalation) Classification: Category C " possible human carcinogen" based on increased incidence of hepatocellular adenomas in females.

1. Triadimenol: HED Chapter of the Tolerance Reassessment Eligibility Decision ( TRED) Document. PC Code: 127201, CAS Reg. No. 55219 65 3, DP Barcode: D314964. 11/ 23/ 2005. 2. UF = uncertainty factor, FQPA SF = Special FQPA safety factor, NOAEL = no observed adverse effect level, LOAEL = lowest observed adverse effect level, PAD = population adjusted dose ( a = acute, c = chronic) RfD = reference dose, MOE = margin of exposure, LOC = level of concern, NA = Not Applicable.

VI. Results/ Discussion As stated above, for acute and chronic assessments, HED is concerned when dietary risk exceeds 100% of the PAD. The DEEM FCID   analyses estimate the dietary exposure of the U. S. population and various population subgroups. The acute dietary exposure analysis results Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 11 of 21 reported in Table 4 are for the general U. S. population, all infants ( less than 1 year old), children 1 2, children 3 5, children 6 12, youth 13 19, adults 20 49, adults 50+ years, and females 13 49. The chronic dietary exposure analysis results reported in Table 5 are for the general U. S. population, all infants ( less than 1 year old), children 1 2, children 3 5, children 6 12, youth 13 19, adults 20 49, adults 50+ years, and females 13 49. Cancer risk is determined for the general U. S. population only.

Results of Acute Dietary Exposure Analysis This assessment concludes that for all supported commodities, the acute dietary risk estimates do not exceed HED's level of concern ( less than 100% of the aPAD) at the 95th exposure percentile for the U. S. population ( 15% of the aPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 29% of the aPAD. The results of the acute dietary exposure analysis at the 95th, 99th, and 99.9th percentiles of exposure are reported in Table 5. The results of the acute dietary exposure analysis at the 95th percentile are reported in Table 6 along with chronic dietary exposure analyses for easy comparison.

The acute dietary risk estimates for food alone ( no water) do no exceed HED's level of concern at the 95th exposure percentile for the U. S. population ( 15% of the aPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 28% of the aPAD. The results of the food alone acute dietary exposure analysis at the 95th percentile are reported in Table 7 along with food alone chronic dietary exposure analysis for easy comparison.

Table 5. Results of Acute ( Food and Water) Dietary Exposure Analysis for Triadimenol Using DEEM FCID.

Population Subgroup aPAD ( mg/ kg/ day) 95th Percentile 99th Percentile 99.9th Percentile Exposure ( mg/ kg/ day) % aPAD* Exposure ( mg/ kg/ day) % aPAD* Exposure ( mg/ kg/ day) % aPAD*

General U. S. Population 0.0034 0.000501 15 0.000791 23 0.001245 37 All Infants (< 1 year old) 0.0034 0.000798 23 0.001244 37 0.001657 49 Children 1 2 years old 0.0034 0.000981 29 0.001367 40 0.002047 60 Children 3 5 years old 0.0034 0.000871 26 0.001158 34 0.001609 47 Children 6 12 years old 0.0034 0.000639 19 0.000857 25 0.001220 36 Youth 13 19 years old 0.0034 0.000436 13 0.000623 18 0.001026 30 Adults 20 49 years old 0.0034 0.000329 10 0.000489 14 0.000739 22 Adults 50+ years old 0.0034 0.000249 7 0.000340 10 0.000515 15 Females 13 49 year old 0.0034 0.000318 9 0.000439 13 0.000718 21 The bolded values represent the highest exposed populations for each percentile.

Results of Chronic Dietary Exposure Analysis This assessment concludes that for all supported commodities, the chronic dietary risk estimates do not exceed HED's level of concern ( less than 100% of the cPAD) for the U. S. population ( 7% of the cPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 23% of the cPAD. The results of the chronic dietary exposure analysis Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 12 of 21 are reported below in Table 6.

Table 6. Summary of Acute and Chronic ( Food and Water) Dietary Exposure and Risk for Triadimenol.

Population Subgroup Acute Dietary ( 95th Percentile) Chronic Dietary Exposure ( mg/ kg/ day) % aPAD Exposure ( mg/ kg/ day) % cPAD General U. S. Population 0.000501 15 0.000251 7 All Infants (< 1 year old) 0.000798 23 0.000469 14 Children 1 2 years old 0.000981 29 0.000770 23 Children 3 5 years old 0.000871 26 0.000610 18 Children 6 12 years old 0.000639 19 0.000379 11 Youth 13 19 years old 0.000436 13 0.000224 7 Adults 20 49 years old 0.000329 10 0.000188 6 Adults 50+ years old 0.000249 7 0.000178 5 Females 13 49 years old 0.000318 9 0.000181 5 The bolded values represent the highest exposed populations for each of the risk assessments.

The chronic dietary risk estimates for food alone ( no water) do no exceed HED's level of concern for the U. S. population ( 7% of the cPAD) and all population subgroups, with the highest exposed population subgroup being children 1 2 years old at 23% of the cPAD. The results of the food alone chronic dietary exposure analysis are reported below in Table 7 along with food alone acute dietary exposure analysis at the 95th percentile for easy comparison.

Table 7. Summary of Acute and Chronic ( Food Only) Dietary Exposure and Risk for Triadimenol.

Population Subgroup Acute Dietary ( 95th Percentile) Chronic Dietary Exposure ( mg/ kg/ day) % aPAD Exposure ( mg/ kg/ day) % cPAD General U. S. Population 0.000494 15 0.000247 7 All Infants (< 1 year old) 0.000763 22 0.000456 13 Children 1 2 years old 0.000961 28 0.000764 23 Children 3 5 years old 0.000862 25 0.000604 18 Children 6 12 years old 0.000633 19 0.000375 11 Youth 13 19 years old 0.000428 13 0.000221 7 Adults 20 49 years old 0.000320 9 0.000185 5 Adults 50+ years old 0.000240 7 0.000174 5 Females 13 49 years old 0.000309 9 0.000177 5 Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 13 of 21 The bolded values represent the highest exposed populations for each of the risk assessments.

VII. Characterization of Inputs/ Outputs The acute and chronic dietary exposure assessments were refined through the use of experimentally determined processing factors and a DEEM Version 7.81 default processing factor for dried bananas. The AR estimate used for bananas is considered moderately refined, although it is considered highly conservative based on the nature of the residue data source since field trial studies use maximum application rates and minimum pre harvest intervals. Additionally, tolerance values were used for the remaining commodities for the acute analysis and for all commodities in the chronic assessment, and 100% crop treated was assumed for all commodities. HED concludes that the exposure estimates provided in this document are unlikely to underestimate actual exposure.

VIII. Conclusions The acute and chronic dietary risk assessments were conducted for all supported triadimenol food uses and were performed to support the tolerance reassessment eligibility decision document. The acute and chronic assessments show that dietary exposure and risk are of concern for the supported uses. However, exposure to triadimenol can occur following the application of triadimenol as an active ingredient as well as from the metabolism/ degradation of triadimefon. The current dietary risk assessment only addresses the use of triadimenol as an active ingredient per se. Exposures from the pesticidal uses of triadimenol have not been aggregated with triadimenol exposures reflecting metabolism and/ or degradation of triadimefon because risks attributable to uses of triadimefon already exceed HED's level of concern ( S. Ary, D314778, 11/ 23/ 2005) and because the resulting apparent increase in aggregate risk would unduly be associated with the registered uses of triadimenol. The Agency is soliciting comments on assumptions used in the current risk assessment. Should refinements be possible in the future, it may be appropriate to aggregate multiple routes and sources of exposures for these chemicals.

IX. List of Attachments Attachment 1. Data and Residue Estimates Used in Dietary Analyses. Attachment 2. Acute Food and Water Residue Input File. Attachment 3. Acute Food and Water Results File. Attachment 4. Acute Food Only Results File. Attachment 5. Chronic Food and Water Residue Input File. Attachment 6. Chronic Food and Water Results File. Attachment 7. Chronic Food Only Results File. Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 14 of 21 Attachment 1. Data and Residue Estimates Used in Dietary Analyses.

RAC Classification1 Data Source MRID No. of Samples No. of Detectable Residues Avg. LOD ( ppm) % CT Avg. 2 % CT Max. 2 Processing Factors3 Anticipated Residue Estimates/ Tolerance Acute ( Tol., AR,

RDF) 6 Chronic and Cancer ( Tol.,

AR)

Banana NB/ PB Field trial data and tolerance 40615201 10 0.04, 0.05,

0.02, 0.04,

0.015, 0.015,

0.025, 0.015,

0.03, 0.05 0.036 100 100 3.9x for dried RDF 1 TOTALZ= 0 TOTALLOD= 0 LODRES= 0.015 0.04 0.05 0.02 0.04 0.015 0.015 0.025 0.015 0.03 0.05 Tol ( 0.2)

Barley grain B Tolerance N/ A N/ A N/ A N/ A 100 100 2.1x for bran Tol ( 0.05 Tol ( 0.05)

Field and pop corn grain B Tolerance N/ A N/ A N/ A N/ A 100 100 None Tol ( 0.05) Tol ( 0.05)

Sweet corn grain NB/ PB Tolerance N/ A N/ A N/ A N/ A 100 100 None Tol ( 0.05) Tol ( 0.05)

Cottonseed B Tolerance N/ A N/ A N/ A N/ A 100 100 None Tol ( 0.05) Tol ( 0.02)

Oat grain B Tolerance N/ A N/ A N/ A N/ A 100 100 2.1x for bran Tol ( 0.05) Tol ( 0.05)

Rye grain B Tolerance N/ A N/ A N/ A N/ A 100 100 None Tol ( 0.05) Tol ( 0.05)

Water N/ A EDWCs4 N/ A N/ A N/ A N/ A N/ A N/ A N/ A AR ( 0.000393) AR ( 0.000194)

Wheat grain B Tolerance N/ A N/ A N/ A N/ A 100 100 2.1x for bran Tol ( 0.05) Tol ( 0.05)

1. Classification of blended ( B), partially blended ( PB), not blended ( NB).

2. No data were available for percent crop treated, so 100% CT was used in the dietary assessment.

3. Processing study information may be found in the Chemistry Review Document under guideline section 860.1520 Processed Food and Feed ( S. Ary,

D314891, 10/ 28/ 2005).

4. EDWCs = Estimated Drinking Water Concentrations.

5. N/ A = Not applicable.

6. LOD = 0.01 ppm for triadimenol and 0.02 for KWG 1342.

Attachment 2. Acute Food and Water Residue Input File. Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 15 of 21 U. S. Environmental Protection Agency Ver. 2.02 DEEM FCID Acute analysis for TRIADIMENOL Residue file name: C:\ Pesticides\ Triazols\ Triadimenol\ Dietary\ triadimenol acute. R98 Analysis Date 10 25 2005 Residue file dated: 10 25 2005/ 21: 47: 29/ 8 Reference dose ( aRfD) = 0.0034 mg/ kg bw/ day Comment: Food and Water  RDL indices and parameters for Monte Carlo Analysis: Index Dist Parameter # 1 Param # 2 Param # 3 Comment # Code       1 6 C:\ Pesticides\ Triazols\ Triadimenol\ Dietary\ RDF\ Banana, NB or PB. rdf EPA Crop Food Name Def Res Adj. Factors RDL Comment Code Grp ( ppm) # 1 # 2 Pntr          95000230 O Banana 0.200000 1.000 1.000 1 NB/ PB; Full comment: NB/ PB; FTD 95000231 O Banana babyfood 0.200000 1.000 1.000 1 NB/ PB; Full comment: NB/ PB; FTD 95000240 O Banana, dried 0.200000 3.900 1.000 1 NB/ PB; Full comment: NB/ PB; FTD 95000241 O Banana, dried babyfood 0.200000 3.900 1.000 1 NB/ PB; Full comment: NB/ PB; FTD 15000250 15 Barley, pearled barley 0.050000 1.000 1.000 B; Tol 15000251 15 Barley, pearled barley babyfood 0.050000 1.000 1.000 B; Tol 15000260 15 Barley, flour 0.050000 1.000 1.000 B; Tol 15000261 15 Barley, flour babyfood 0.050000 1.000 1.000 B; Tol 15000270 15 Barley, bran 0.050000 2.100 1.000 B; Tol 15001200 15 Corn, field, flour 0.050000 1.000 1.000 B; Tol 15001201 15 Corn, field, flour babyfood 0.050000 1.000 1.000 B; Tol 15001210 15 Corn, field, meal 0.050000 1.000 1.000 B; Tol 15001211 15 Corn, field, meal babyfood 0.050000 1.000 1.000 B; Tol 15001220 15 Corn, field, bran 0.050000 1.000 1.000 B; Tol 15001230 15 Corn, field, starch 0.050000 1.000 1.000 B; Tol 15001231 15 Corn, field, starch babyfood 0.050000 1.000 1.000 B; Tol 15001240 15 Corn, field, syrup 0.050000 1.000 1.000 B; Tol 15001241 15 Corn, field, syrup babyfood 0.050000 1.000 1.000 B; Tol 15001250 15 Corn, field, oil 0.050000 1.000 1.000 B; Tol 15001251 15 Corn, field, oil babyfood 0.050000 1.000 1.000 B; Tol 15001260 15 Corn, pop 0.050000 1.000 1.000 B; Tol 15001270 15 Corn, sweet 0.050000 1.000 1.000 B; Tol 15001271 15 Corn, sweet babyfood 0.050000 1.000 1.000 B; Tol 95001280 O Cottonseed, oil 0.020000 1.000 1.000 B; Tol 95001281 O Cottonseed, oil babyfood 0.020000 1.000 1.000 B; Tol 15002310 15 Oat, bran 0.050000 2.100 1.000 B; Tol 15002320 15 Oat, flour 0.050000 1.000 1.000 B; Tol 15002321 15 Oat, flour babyfood 0.050000 1.000 1.000 B; Tol 15002330 15 Oat, groats/ rolled oats 0.050000 1.000 1.000 B; Tol 15002331 15 Oat, groats/ rolled oats babyfood 0.050000 1.000 1.000 B; Tol 15003280 15 Rye, grain 0.050000 1.000 1.000 B; Tol 15003290 15 Rye, flour 0.050000 1.000 1.000 B; Tol 86010000 O Water, direct, all sources 0.000393 1.000 1.000 86020000 O Water, indirect, all sources 0.000393 1.000 1.000 15004010 15 Wheat, grain 0.050000 1.000 1.000 B; Tol 15004011 15 Wheat, grain babyfood 0.050000 1.000 1.000 B; Tol 15004020 15 Wheat, flour 0.050000 1.000 1.000 B; Tol 15004021 15 Wheat, flour babyfood 0.050000 1.000 1.000 B; Tol 15004030 15 Wheat, germ 0.050000 1.000 1.000 B; Tol 15004040 15 Wheat, bran 0.050000 2.100 1.000 B; Tol Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 16 of 21 Attachment 3. Acute Food and Water Results File.

U. S. Environmental Protection Agency Ver. 2.02 DEEM FCID ACUTE Analysis for TRIADIMENOL ( 1994 98 data) Residue file: triadimenol acute. R98 Adjustment factor # 2 used. Analysis Date: 10 25 2005/ 21: 51: 44 Residue file dated: 10 25 2005/ 21: 47: 29/ 8 Daily totals for food and foodform consumption used. MC iterations = 1000 MC list in residue file MC seed = 1 Run Comment: " Food and Water" ===============================================================================

Summary calculations ( per capita):

95th Percentile 99th Percentile 99.9th Percentile Exposure % aRfD Exposure % aRfD Exposure % aRfD       U. S. Population: 0.000501 14.74 0.000791 23.27 0.001245 36.61 All infants: 0.000798 23.47 0.001244 36.60 0.001657 48.74 Children 1 2 yrs: 0.000981 28.86 0.001367 40.20 0.002047 60.20 Children 3 5 yrs: 0.000871 25.63 0.001158 34.07 0.001609 47.31 Children 6 12 yrs: 0.000639 18.80 0.000857 25.19 0.001220 35.88 Youth 13 19 yrs: 0.000436 12.82 0.000623 18.33 0.001026 30.17 Adults 20 49 yrs: 0.000329 9.68 0.000489 14.39 0.000739 21.74 Adults 50+ yrs: 0.000249 7.33 0.000340 10.00 0.000515 15.15 Females 13 49 yrs: 0.000318 9.34 0.000439 12.92 0.000718 21.13 Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 17 of 21 Attachment 4. Acute Food Only Results File.

U. S. Environmental Protection Agency Ver. 2.02 DEEM FCID ACUTE Analysis for TRIADIMENOL ( 1994 98 data) Residue file: triadimenol acute ( food only). R98 Adjustment factor # 2 used. Analysis Date: 11 22 2005/ 10: 24: 08 Residue file dated: 11 22 2005/ 10: 17: 32/ 8 Daily totals for food and foodform consumption used. MC iterations = 1000 MC list in residue file MC seed = 1 Run Comment: " Food Only" ===============================================================================

Summary calculations ( per capita):

95th Percentile 99th Percentile 99.9th Percentile Exposure % aRfD Exposure % aRfD Exposure % aRfD       U. S. Population: 0.000494 14.52 0.000781 22.98 0.001223 35.98 All infants: 0.000763 22.45 0.001191 35.04 0.001663 48.90 Children 1 2 yrs: 0.000961 28.25 0.001342 39.46 0.002027 59.61 Children 3 5 yrs: 0.000862 25.35 0.001137 33.45 0.001573 46.28 Children 6 12 yrs: 0.000633 18.61 0.000851 25.03 0.001215 35.74 Youth 13 19 yrs: 0.000428 12.57 0.000608 17.89 0.001023 30.10 Adults 20 49 yrs: 0.000320 9.42 0.000484 14.22 0.000733 21.56 Adults 50+ yrs: 0.000240 7.07 0.000331 9.74 0.000500 14.71 Females 13 49 yrs: 0.000309 9.08 0.000429 12.61 0.000710 20.90 Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 18 of 21 Attachment 5. Chronic Food and Water Residue Input File.

U. S. Environmental Protection Agency Ver. 2.00 DEEM FCID Chronic analysis for TRIADIMENOL 1994 98 data Residue file: C:\ Pesticides\ Triazols\ Triadimenol\ Dietary\ triadimenol chronic. R98 Adjust. # 2 used Analysis Date 10 25 2005 Residue file dated: 10 25 2005/ 22: 15: 20/ 8 Reference dose ( RfD) = 0.0034 mg/ kg bw/ day Comment: Food and Water  Food Crop Residue Adj. Factors Comment EPA Code Grp Food Name ( ppm) # 1 # 2         95000230 O Banana 0.200000 1.000 1.000 NB/ PB; Full comment: NB/ PB; Tol 95000231 O Banana babyfood 0.200000 1.000 1.000 NB/ PB; Full comment: NB/ PB; Tol 95000240 O Banana, dried 0.200000 3.900 1.000 NB/ PB; Full comment: NB/ PB; Tol 95000241 O Banana, dried babyfood 0.200000 3.900 1.000 NB/ PB; Full comment: NB/ PB; Tol 15000250 15 Barley, pearled barley 0.050000 1.000 1.000 B; Tol 15000251 15 Barley, pearled barley babyfood 0.050000 1.000 1.000 B; Tol 15000260 15 Barley, flour 0.050000 1.000 1.000 B; Tol 15000261 15 Barley, flour babyfood 0.050000 1.000 1.000 B; Tol 15000270 15 Barley, bran 0.050000 2.100 1.000 B; Tol 15001200 15 Corn, field, flour 0.050000 1.000 1.000 B; Tol 15001201 15 Corn, field, flour babyfood 0.050000 1.000 1.000 B; Tol 15001210 15 Corn, field, meal 0.050000 1.000 1.000 B; Tol 15001211 15 Corn, field, meal babyfood 0.050000 1.000 1.000 B; Tol 15001220 15 Corn, field, bran 0.050000 1.000 1.000 B; Tol 15001230 15 Corn, field, starch 0.050000 1.000 1.000 B; Tol 15001231 15 Corn, field, starch babyfood 0.050000 1.000 1.000 B; Tol 15001240 15 Corn, field, syrup 0.050000 1.000 1.000 B; Tol 15001241 15 Corn, field, syrup babyfood 0.050000 1.000 1.000 B; Tol 15001250 15 Corn, field, oil 0.050000 1.000 1.000 B; Tol 15001251 15 Corn, field, oil babyfood 0.050000 1.000 1.000 B; Tol 15001260 15 Corn, pop 0.050000 1.000 1.000 B; Tol 15001270 15 Corn, sweet 0.050000 1.000 1.000 NB/ PB; Full comment: NB/ PB; Tol 15001271 15 Corn, sweet babyfood 0.050000 1.000 1.000 NB/ PB; Full comment: NB/ PB; Tol 95001280 O Cottonseed, oil 0.020000 1.000 1.000 B; Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 19 of 21 Tol 95001281 O Cottonseed, oil babyfood 0.020000 1.000 1.000 B; Tol 15002310 15 Oat, bran 0.050000 2.100 1.000 B; Tol 15002320 15 Oat, flour 0.050000 1.000 1.000 B; Tol 15002321 15 Oat, flour babyfood 0.050000 1.000 1.000 B; Tol 15002330 15 Oat, groats/ rolled oats 0.050000 1.000 1.000 B; Tol 15002331 15 Oat, groats/ rolled oats babyfood 0.050000 1.000 1.000 B; Tol 15003280 15 Rye, grain 0.050000 1.000 1.000 B; Tol 15003290 15 Rye, flour 0.050000 1.000 1.000 B; Tol 86010000 O Water, direct, all sources 0.000194 1.000 1.000 86020000 O Water, indirect, all sources 0.000194 1.000 1.000 15004010 15 Wheat, grain 0.050000 1.000 1.000 B; Tol 15004011 15 Wheat, grain babyfood 0.050000 1.000 1.000 B; Tol 15004020 15 Wheat, flour 0.050000 1.000 1.000 B; Tol 15004021 15 Wheat, flour babyfood 0.050000 1.000 1.000 B; Tol 15004030 15 Wheat, germ 0.050000 1.000 1.000 B; Tol 15004040 15 Wheat, bran 0.050000 2.100 1.000 B; Tol Attachment 6. Chronic Food and Surface Water Results File.

U. S. Environmental Protection Agency Ver. 2.00 DEEM FCID Chronic analysis for TRIADIMENOL ( 1994 98 data) Residue file name: C:\ Pesticides\ Triazols\ Triadimenol\ Dietary\ triadimenol chronic. R98 Adjustment factor # 2 used. Analysis Date 10 25 2005/ 22: 15: 37 Residue file dated: 10 25 2005/ 22: 15: 20/ 8 Reference dose ( RfD, Chronic) = 0.0034 mg/ kg bw/ day COMMENT 1: Food and Water =============================================================================== Total exposure by population subgroup

Total Exposure  Population mg/ kg Percent of Subgroup body wt/ day Rfd    U. S. Population ( total) 0.000251 7.4%

U. S. Population ( spring season) 0.000253 7.4% U. S. Population ( summer season) 0.000250 7.3% U. S. Population ( autumn season) 0.000249 7.3% U. S. Population ( winter season) 0.000254 7.5%

Northeast region 0.000249 7.3% Midwest region 0.000264 7.8% Southern region 0.000233 6.9% Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 20 of 21 Western region 0.000268 7.9%

Hispanics 0.000280 8.2% Non hispanic whites 0.000250 7.4% Non hispanic blacks 0.000234 6.9% Non hisp/ non white/ non black 0.000249 7.3%

All infants (< 1 year) 0.000469 13.8% Nursing infants 0.000279 8.2% Non nursing infants 0.000541 15.9% Children 1 6 yrs 0.000643 18.9% Children 7 12 yrs 0.000359 10.6%

Females 13 19 ( not preg or nursing) 0.000195 5.7% Females 20+ ( not preg or nursing) 0.000175 5.1% Females 13 50 yrs 0.000199 5.9% Females 13+ ( preg/ not nursing) 0.000200 5.9% Females 13+ ( nursing) 0.000226 6.6%

Males 13 19 yrs 0.000253 7.4% Males 20+ yrs 0.000194 5.7% Seniors 55+ 0.000177 5.2%

Children 1 2 yrs 0.000770 22.6% Children 3 5 yrs 0.000610 17.9% Children 6 12 yrs 0.000379 11.2% Youth 13 19 yrs 0.000224 6.6% Adults 20 49 yrs 0.000188 5.5% Adults 50+ yrs 0.000178 5.2% Females 13 49 yrs 0.000181 5.3%

Attachment 7. Chronic Food Only Results File.

U. S. Environmental Protection Agency Ver. 2.00 DEEM FCID Chronic analysis for TRIADIMENOL ( 1994 98 data) Residue file name: C:\ Pesticides\ Triadimenol\ Dietary\ triadimenol chronic ( food only). R98 Adjustment factor # 2 used. Analysis Date 11 22 2005/ 10: 33: 58 Residue file dated: 11 22 2005/ 10: 33: 36/ 8 Reference dose ( RfD, Chronic) = 0.0034 mg/ kg bw/ day COMMENT 1: Food Only =============================================================================== Total exposure by population subgroup

Total Exposure  Population mg/ kg Percent of Subgroup body wt/ day Rfd    U. S. Population ( total) 0.000247 7.3%

U. S. Population ( spring season) 0.000249 7.3% U. S. Population ( summer season) 0.000245 7.2% U. S. Population ( autumn season) 0.000245 7.2% U. S. Population ( winter season) 0.000250 7.3%

Northeast region 0.000245 7.2% Triadimenol Dietary Exposure Assessment  TRED DP Barcode: 314928 Page 21 of 21 Midwest region 0.000259 7.6% Southern region 0.000230 6.8% Western region 0.000264 7.8%

Hispanics 0.000275 8.1% Non hispanic whites 0.000246 7.2% Non hispanic blacks 0.000230 6.8% Non hisp/ non white/ non black 0.000244 7.2%

All infants (< 1 year) 0.000456 13.4% Nursing infants 0.000274 8.1% Non nursing infants 0.000525 15.4% Children 1 6 yrs 0.000637 18.7% Children 7 12 yrs 0.000356 10.5%

Females 13 19 ( not preg or nursing) 0.000192 5.6% Females 20+ ( not preg or nursing) 0.000171 5.0% Females 13 50 yrs 0.000195 5.7% Females 13+ ( preg/ not nursing) 0.000196 5.8% Females 13+ ( nursing) 0.000220 6.5%

Males 13 19 yrs 0.000250 7.4% Males 20+ yrs 0.000190 5.6% Seniors 55+ 0.000173 5.1%

Children 1 2 yrs 0.000764 22.5% Children 3 5 yrs 0.000604 17.8% Children 6 12 yrs 0.000375 11.0% Youth 13 19 yrs 0.000221 6.5% Adults 20 49 yrs 0.000185 5.4% Adults 50+ yrs 0.000174 5.1% Females 13 49 yrs 0.000177 5.2%


			  UNITED STATES OF AMERICA

		        DEPARTMENT OF TRANSPORTATION

			  OFFICE OF THE SECRETARY

			          WASHINGTON, D.C.

Issued by the Department of Transportation on July 1, 2003

NOTICE OF ACTION TAKEN -- DOCKETS OST-2000-7490

________________________________________________________________________
__________________________________________

This serves as notice to the public of the action described below, taken
by the Department official indicated (no additional confirming order
will be issued in this matter).

Applicant:  Emirates		Date Filed:  June 8, 2000, as amended August 20,
2002, and June 18, 2003

Relief requested:  Exemption from 49 U.S.C. § 41301 to engage in
scheduled foreign air transportation of persons, property and mail from
points behind the United Arab Emirates (U.A.E.), via the U.A.E. and
intermediate points, to a point or points in the United States and
beyond; and authority to conduct charters in accordance with Part 212 of
the Department’s rules.

If renewal, date and citation of last action:  New authority

Applicant representative:  Shelia C. Cheston & David Heffernan (202)
663-6000

DOT Analyst:  Gordon H. Bingham<PHONE_NUMBER>

DISPOSITION

Action:  Approved							Action date:  July 1, 2003

Effective dates of authority granted:  July 1, 2003-July 1, 2005

Basis for approval (bilateral agreement/reciprocity):  April 13, 1999,
U.S.-U.A.E. Air Transport Agreement

Except to the extent exempted/waived, this authority is subject to the
terms, conditions, and limitations indicated:  X  Standard exemption
conditions (attached)

Special conditions/Partial grant/Denial basis/Remarks: Based on the
record in this case, we found that Emirates is financially and
operationally qualified to perform the services authorized above.  We
found that Emirates is wholly owned by the Government of Dubai.
Emirates is properly licensed and designated by the Government of the
U.A.E. to perform the proposed services.  By memorandum dated April 18,
2003, the FAA advised us that it knew of no reason why we should act
unfavorably on Emirates’ application.

Emirates may exercise the authority granted in this notice only as part
of a Department-authorized code-share or wet lease arrangement with a
duly authorized and properly supervised carrier or carriers.

Action taken by:   Paul L. Gretch, Director

		      Office of International Aviation

________________________________________________________________________
_________

Under authority assigned by the Department in its regulations, 14 CFR
Part 385, we found that (1) the applicant was qualified to perform the
proposed operations; (2) our action was consistent with Department
policy; (3) grant of the authority was consistent with the public
interest; and (4) grant of the authority would not constitute a major
regulatory action under the Energy Policy and Conservation Act of 1975.
To the

2

extent not granted/deferred/dismissed, we denied all requests in the
referenced Docket.  We may amend, modify, or revoke the authority
granted in this Notice at any time without hearing at our discretion.

Persons entitled to petition the Department for review of the action set
forth in this Notice under the Department’s regulations, 14 CFR §
385.30, may file their petitions within seven (7) days after the date of
issuance of this Notice.  This action was effective when taken, and the
filing of a petition for review will not alter such effectiveness.

An electronic version of this document is available on the World Wide
Web at:

http://dms.dot.gov//reports/reports_aviation.asp

					Attachment

Foreign Carrier Exemption Conditions

In the conduct of the operations authorized, the foreign carrier
applicant(s) shall:

(1)  Not conduct any operations unless it holds a currently effective
authorization from its homeland for such operations, and it has filed a
copy of such authorization with the Department;

(2)  Comply with all applicable requirements of the Federal Aviation
Administration, including, but not limited to, 14 CFR Parts 129, 91, and
36, and with all applicable U.S. Government requirements concerning
security;1

(3)  Comply with the requirements for minimum insurance coverage
contained in 14 CFR Part 205, and, prior to the commencement of any
operations under this authority, file evidence of such coverage, in the
form of a completed OST Form 6411, with the Federal Aviation
Administration’s Program Management Branch (AFS-260), Flight Standards
Service (any changes to, or termination of, insurance also shall be
filed with that office);

(4)  Not operate aircraft under this authority unless it complies with
operational safety requirements at least equivalent to Annex 6 of the
Chicago Convention;

(5)  Conform to the airworthiness and airman competency requirements of
its Government for international air services;

(6)  Except as specifically exempted or otherwise provided for in a
Department Order, comply with the requirements of 14 CFR Part 203,
concerning waiver of Warsaw Convention liability limits and defenses;

(7)  Agree that operations under this authority constitute a waiver of
sovereign immunity, for the purposes of 28 U.S.C. 1605(a), but only with
respect to those actions or proceedings instituted against it in any
court or other tribunal in the United States that are: (a)  based on its
operations in international air transportation that, according to the
contract of carriage, include a point in the United States as a point of
origin, point of destination, or agreed stopping place, or for which the
contract of carriage was purchased in the United States; or (b)  based
on a claim under any international agreement or treaty cognizable in any
court or other tribunal of the United States.  In this condition, the
term "international air transportation" means "international
transportation" as defined by the Warsaw Convention, except that all
States shall be considered to be High Contracting Parties for the
purpose of this definition;

(8)  Except as specifically authorized by the Department, originate or
terminate all flights to/from the United States in its homeland;

(9)  Comply with the requirements of 14 CFR Part 217, concerning the
reporting of scheduled, nonscheduled, and charter data;

(10) If charter operations are authorized, except as otherwise provided
in the applicable aviation agreement, comply with the Department's rules
governing charters (including 14 CFR Parts 212 and 380); and

(11) Comply with such other reasonable terms, conditions, and
limitations required by the public interest as may be prescribed by the
Department, with all applicable orders or regulations of other U.S.
agencies and courts, and with all applicable laws of the United States.

This authority shall not be effective during any period when the holder
is not in compliance with the conditions imposed above.  Moreover, this
authority cannot be sold or otherwise transferred without explicit
Department approval under Title 49 of the U.S. Code.

____________________________

1 To assure compliance with all applicable U.S. Government requirements
concerning security, the holder should, before commencing any new
service (including charter flights) from a foreign airport that would be
the holder’s last point of departure for the United States, contact
its Principal Security Inspector (PSI) to advise the PSI of its plans
and to find out whether the Transportation Security Administration has
determined that security is adequate to allow such airport(s) to be
served.

  By letter dated June 18, 2003, Emirates states that it does not
anticipate operating its own aircraft to/from the United States before
April 2004.  In that regard, Emirates states that to expedite the
implementation of its pending request to conduct blanket code-share
services with Continental (see Docket OST-2000-7495), it asks that we
promptly approve its request at issue here subject to an interim
condition that it may exercise the authority granted only as part of an
authorized code-share or wet lease arrangement with another authorized
carrier of carriers.  Emirates further states that it will subsequently
notify the Department of its specific timetable for implementing
services to the U.S. with its own aircraft to allow the Department
sufficient time to complete any further review of its pending request.

  Emirates is subject to the jurisdiction of both the Government of the
U.A.E. and the Government of Dubai.

  See related joint blanket code-share request of Emirates and
Continental, approved July 1, 2003, in Docket OST-2000-7495.

06/2003


From:
<EMAIL_ADDRESS><EMAIL_ADDRESS>Sent:
Tuesday, August 02, 2016 2:45 PM
To:
Jones, DonnaLee<EMAIL_ADDRESS>Cc:
<EMAIL_ADDRESS><EMAIL_ADDRESS><EMAIL_ADDRESS>Subject:
2014 Quarterly Title V and NESHAP reports

Chris Potts
Senior Environmental Engineer
AK Steel Middletown Works
office:<PHONE_NUMBER>
cell:<PHONE_NUMBER>
fax:<PHONE_NUMBER>

<< 1Q 2014 Coke 5C COMS Report.pdf >>
<< 1Q 2014 Deviation Report.pdf >>
<< 2Q 2014 Coke 5C COMS Report.pdf >>
<< 2Q 2014 Deviation & VE Report.pdf >>
<< 3Q 2014 Deviation Report.pdf >>
<< 3Q 2014 Coke 5C COMS Report.pdf >>
<< 4Q 2014 Deviation & VE Report.pdf >>
<< 4Q 2014 Coke 5C COMS Report.pdf >>


[Federal Register Volume 75, Number 234 (Tuesday, December 7, 2010)]
[Notices]
[Pages 76077-76078]
[FR Doc No: 2010-30603]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

[Docket No. PHMSA-2010-0355]

Pipeline Safety: Information Collection Activities

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA),
DOT.

ACTION: Notice and request for comments.

-----------------------------------------------------------------------

SUMMARY: In accordance with the Paperwork Reduction Act of 1995, PHMSA
invites comments on an information collection under Office of
Management and Budget (OMB) Control No. 2137-0618, titled ``Pipeline
Safety: Periodic Underwater Inspection.'' PHMSA is preparing to request
approval from OMB for a renewal of the current information collection.

DATES: Interested persons are invited to submit comments on or before
February 7, 2011.

ADDRESSES: Comments may be submitted in the following ways:
    E-Gov Web Site: http://www.regulations.gov. This site allows the
public to enter comments on any Federal Register notice issued by any
agency.
    Fax: 1-202-493-2251.
    Mail: Docket Management Facility; U.S. DOT, 1200 New Jersey Avenue,
SE., West Building, Room W12-140, Washington, DC 20590-0001.
    Hand Delivery: Room W12-140 on the ground level of the West
Building, 1200 New Jersey Avenue, SE., Washington, DC, between 9:00
a.m. and 5:00 p.m., Monday through Friday, except Federal holidays.
    Instructions: Identify the docket number, PHMSA-2010-0355, at the
beginning of your comments. Note that all comments received will be
posted without change to http://www.regulations.gov, including any
personal information provided. You should know that anyone is able to
search the electronic form of all comments received into any of our
dockets by the name of the individual submitting the comment (or
signing the comment, if submitted on behalf of an association,
business, labor union, etc.). Therefore, you may want to review DOT's
complete Privacy Act Statement in the Federal Register published on
April 11, 2000 (65 FR 19477) or visit http://www.regulations.gov before
submitting any such comments.
    Docket: For access to the docket or to read background documents or

comments, go to http://www.regulations.gov at any time or to Room W12-
140 on the ground level of the West Building, 1200 New Jersey Avenue,
SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. If you wish to receive confirmation of receipt
of your written comments, please include a self-addressed, stamped
postcard with the following statement: ``Comments on PHMSA-2010-0355.''
The Docket Clerk will date stamp the postcard prior to returning it to
you via the U.S. mail. Please note that due to delays in the delivery
of U.S. mail to Federal offices in Washington, DC, we recommend that
persons consider an alternative method (Internet, fax, or professional
delivery service) of submitting comments to the docket and ensuring
their timely receipt at DOT.

FOR FURTHER INFORMATION CONTACT: Cameron Satterthwaite by telephone at
202-366-1319, by fax at<PHONE_NUMBER>, or by mail at U.S. DOT, PHMSA,
1200 New Jersey Avenue, SE., PHP-30, Washington, DC 20590-0001.

SUPPLEMENTARY INFORMATION: Section 1320.8(d), Title 5, Code of Federal
Regulations, requires PHMSA to provide interested members of the public
and affected agencies an opportunity to comment on information
collection and recordkeeping requests. This notice identifies an
information collection request that PHMSA will be submitting to OMB for
renewal and extension. The information collection expires March 31,
2011, and is identified under Control No. 2137-0618, titled: ``Pipeline
Safety: Periodic Underwater Inspection.'' As detailed in 49 CFR 192.612
and 195.413, PHMSA requires each operator of a natural gas or hazardous
liquid pipeline in the Gulf of Mexico and its inlets to periodically
inspect its pipelines in waters less than 15 feet (4.6 meters) deep as
measured from mean low water that are at risk of being an exposed
underwater pipeline or a hazard to navigation. If an operator discovers
that its pipeline is an exposed underwater pipeline or poses a hazard
to navigation, the operator must promptly report the location and, if
available, the geographic coordinates of that pipeline to the National
Response Center. The following information is provided for this
information collection: (1) Title of the information collection; (2)
OMB control number; (3) Type of request; (4) Abstract of the
information collection activity; (5) Description of affected public;
(6) Estimate of total annual reporting and recordkeeping burden; and
(7) Frequency of collection. PHMSA will request a three-year term of
approval for this information collection activity.
    PHMSA requests comments on the following information collection:
    Title: Pipeline Safety: Periodic Underwater Inspections.
    OMB Control Number: 2137-0618.
    Type of Request: Renewal of a currently approved information
collection.
    Abstract: The Federal pipeline safety regulations (49 CFR parts
190-199) require operators to conduct appropriate underwater
inspections in the Gulf of Mexico. If an operator finds that its
pipeline is exposed on the seabed floor or constitutes a hazard to
navigation, the operator must contact the National Response Center by
telephone within 24 hours of discovery to report the location of the
exposed pipeline.
    Affected Public: Operators of underwater pipeline facilities.
    Estimated number of responses: 82.
    Estimated annual burden hours: 1,312 hours.
    Frequency of collection: On occasion.
    Comments are invited on:
    (a) The need for the proposed collection of information for the
proper performance of the functions of the agency, including whether
the information will have practical utility;
    (b) The accuracy of the agency's estimate of the burden of the
proposed collection of information, including the validity of the
methodology and assumptions used;
    (c) Ways to enhance the quality, utility, and clarity of the
information to be collected; and
    (d) Ways to minimize the burden of the collection of information on
those who are to respond, including the use of appropriate automated,
electronic, mechanical, or other technological collection techniques.

    Issued in Washington, DC on December 1, 2010.
Linda Daugherty,
Deputy Associate Administrator for Policy and Programs.
[FR Doc. 2010-30603 Filed 12-6-10; 8:45 am]
BILLING CODE 4910-60-P


[Federal Register: September 8, 2010 (Volume 75, Number 173)]
[Notices]
[Page 54605-54606]
[DOCID:fr08se10-56]

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DEPARTMENT OF ENERGY

Federal Energy Regulatory Commission

Combined Notice of Filings No. 2

August 30, 2010.
    Take notice that the Commission has received the following Natural
Gas Pipeline Rate and Refund Report filings:

    Docket Numbers: RP10-1043-001.
    Applicants: Southern Natural Gas Company.
    Description: Southern Natural Gas Company submits tariff filing per
154.205(b): Miscellaneous Filing to be effective 10/1/2010.
    Filed Date: 08/27/2010.
    Accession Number: 20100827-5071.
    Comment Date: 5 p.m. Eastern Time on Wednesday, September 8, 2010.

    Docket Numbers: RP10-1089-002.
    Applicants: Cheniere Creole Trail Pipeline, L.P.
    Description: Cheniere Creole Trail Pipeline, L.P. submits tariff
filing per 154.203: Correction Compliance Filing to be effective 9/30/
2010.
    Filed Date: 08/27/2010.
    Accession Number: 20100827-5089.
    Comment Date: 5 p.m. Eastern Time on Wednesday, September 8, 2010.

    Docket Numbers: RP10-988-001.
    Applicants: CenterPoint Energy Gas Transmission Company.
    Description: CenterPoint Energy Gas Transmission Company submits
tariff filing per 154.203: Compliance filing for records 405 and 720 to
be effective 7/22/2010.
    Filed Date: 08/27/2010.
    Accession Number: 20100827-5130.
    Comment Date: 5 p.m. Eastern Time on Wednesday, September 8, 2010.

    Any person desiring to protest this filing must file in accordance
with Rule 211 of the Commission's Rules of Practice and Procedure (18
CFR 385.211). Protests to this filing will be considered by the
Commission in determining the appropriate action to be taken, but will
not serve to make protestants parties to the proceeding. Such protests
must be filed on or before 5 p.m. Eastern time on the specified comment
date. Anyone filing a protest must serve a copy of that document on all
the parties to the proceeding.
    The Commission encourages electronic submission of protests in lieu

of paper using the ``eFiling'' link at http://www.ferc.gov. Persons
unable to file electronically should submit an original and 14 copies
of the protest to the Federal Energy Regulatory Commission, 888 First
Street, NE., Washington, DC 20426.
    This filing is accessible online at http://www.ferc.gov, using the
``eLibrary'' link and is available for review in the Commission's
Public Reference Room in Washington, DC. There is an ``eSubscription''
link on the Web site that enables subscribers to receive e-mail
notification when a document is added to a subscribed docket(s). For
assistance with any FERC Online service, please e-mail
<EMAIL_ADDRESS>or call<PHONE_NUMBER> (toll free). For
TTY, call<PHONE_NUMBER>.

Nathaniel J. Davis, Sr.,
Deputy Secretary.
[FR Doc. 2010-22265 Filed 9-7-10; 8:45 am]
BILLING CODE 6717-01-P


[Federal Register Volume 86, Number 244 (Thursday, December 23, 2021)]
[Proposed Rules]
[Pages 72891-72894]
[FR Doc No: 2021-27622]

=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-1074; Project Identifier MCAI-2021-00447-R]
RIN 2120-AA64

Airworthiness Directives; Bell Textron Canada Limited Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Bell Textron Canada Limited Model 429 helicopters. This
proposed AD was prompted by reports of failed rivets between the
tailboom skin and the tail rotor (TR) gearbox support assembly. This
proposed AD would require visually inspecting the external surface of
the TR gearbox support assembly, borescope inspecting or visually
inspecting the inside of the tailboom for certain conditions, and
performing a tactile inspection. Depending on the results of the
inspections, this proposed AD would require removing certain rivets
from service or repairing gaps in accordance with FAA-approved methods.
This proposed AD would also require repeating these inspections within
certain intervals. The FAA is proposing this AD to address the unsafe
condition on these products.

DATES: The FAA must receive comments on this proposed AD by February 7,
2022.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
     Fax:<PHONE_NUMBER>.
     Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Bell
Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, Quebec J7J
1R4, Canada; telephone 1-450-437-2862 or 1-800-363-8023; fax 1-450-433-
0272; email [email protected]; or at https://www.bellflight.com/support/contact-support. You may view this service
information at the FAA, Office of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. For
information on the availability of this material at the FAA, call (817)
222-5110.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No.

FAA-2021-1074; or in person at Docket Operations between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays. The AD docket
contains this NPRM, the Transport Canada AD, any comments received, and
other information. The street address for Docket Operations is listed
above.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer,
COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY
11590; telephone<PHONE_NUMBER>; email [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2021-1074; Project Identifier
MCAI-2021-00447-R'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
    Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.

Confidential Business Information

    CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Andrea Jimenez, Aerospace Engineer, COS Program Management Section,
Operational Safety Branch, Compliance & Airworthiness Division, FAA,
1600 Stewart Ave., Suite 410, Westbury, NY 11590; telephone (516) 228-
7330; email [email protected]. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.

Background

    Transport Canada, which is the aviation authority for Canada, has
issued Canadian AD CF-2021-15, dated April 14, 2021 (Transport Canada
AD CF-2021-15), to correct an unsafe condition for Bell Textron Canada
Limited Model 429 helicopters, serial numbers (S/N) 57001 and
subsequent. Transport Canada advises of multiple in-service reports of
failed rivets at the joint between the tailboom skin and the TR gearbox
support assembly part number (P/N) 429-034-701-101 or P/N 429-035-705-
101. Transport Canada states that in-service reports also revealed a
quality escape resulted in a gapping condition between the tailboom
skin and the TR gearbox support fitting at some locations around the
joint, and that rivets of inadequate grip length have been installed at
the affected joint. This condition, if not addressed, could result in
progressive deterioration of the joint structural integrity, detachment
of the TR gearbox support assembly and loss of control of the
helicopter.
    Accordingly, Transport Canada AD CF-2021-15 requires for certain
serial-numbered helicopters an initial visual inspection of the rivets
at the TR gearbox support assembly for signs of failed rivets or
inadequate grip length. Transport Canada AD CF-2021-15 also requires,
for all serial-numbered helicopters defined in the applicability,
repeating the initial visual inspection at intervals not to exceed 400
hours air time or 12 months, whichever occurs first. Transport Canada
AD CF-2021-15 also requires repair or replacement of affected parts if
discrepancies are found. Transport Canada considers its AD an interim
action and states that further AD action may follow.

FAA's Determination

    These helicopters have been approved by the aviation authority of
Canada and are approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with Canada, Transport Canada, its
technical representative, has notified the FAA of the unsafe condition
described in its AD. The FAA is proposing this AD after evaluating all
known relevant information and determining that the unsafe condition
described previously is likely to exist or develop on other helicopters
of these same type designs.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Bell Alert Service Bulletin 429-19-47, Revision B,
dated January 27, 2021 (ASB 429-19-47). This service information
specifies procedures for an initial and repetitive general visual
inspections and detailed inspections of the affected rivets at the
joint between the tailboom skin and the TR gearbox support assembly.
This service information also specifies procedures for replacing the
affected rivets and repairing the gaps in accordance with an approved
Bell structural repair scheme.
    This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.

Proposed AD Requirements in This NPRM

    For Model 429 helicopters with S/N 57002 through 57210 inclusive
and S/N 57212 and subsequent that, as of the effective date of this AD,
have accumulated less than 300 total hours time-in-service (TIS),
before accumulating 400 total hours TIS; or for helicopters with S/N
57002 through 57210 inclusive and S/N 57212 and subsequent that, as of
the effective date of this AD, have replaced certain part-numbered TR
gearbox support assemblies and the helicopter has accumulated less than
300 total hours TIS since the replacement of the TR gearbox support
assembly, before accumulating 400 total hours TIS since the
replacement, this proposed AD would require visually inspecting the
external surface of the TR gearbox support assembly for any rivet heads
that have separated from their tail, measuring any gaps, and before
further flight, removing affected rivets from service or repairing gaps
in accordance with FAA-approved methods.
    This proposed AD would also require either borescope inspecting or
using a light source and mirror to visually inspect each rivet inside
the tailboom for missing rivet tails, rivet tails not resting against
the tailboom skin, and any rivet tails resting at the bottom of the
tailboom. Depending on the inspection results, this proposed AD would
require, before further flight, additional inspections or removing
certain parts from service. This proposed AD would require performing a
tactile inspection of certain rivets

identified in the applicable service information and depending on the
inspection results, removing rivets from service before further flight.
    For Model 429 helicopters with S/N 57002 through 57210 inclusive
and S/N 57212 and subsequent that are not identified in paragraph
(g)(1) of this AD, this proposed AD would require, within 100 hours TIS
after the effective date of this AD, performing the visual inspection
of the TR gearbox support assembly, visually inspecting or borescope
inspecting each rivet inside the tailboom, performing the tactile
inspection, and accomplishing the applicable corrective actions
described previously.
    For Model 429 helicopters S/N 57002 through 57210 inclusive and S/N
57212 and subsequent this proposed AD would require, within 400 hours
TIS after the initial inspections required by this proposed AD, as
applicable to your helicopter, and thereafter at intervals not to
exceed 400 hours TIS, performing the visual inspection of the TR
gearbox support assembly, visually inspecting or borescope inspecting
each rivet inside the tailboom, performing the tactile inspection, and
accomplishing the applicable corrective actions described previously.
    For Model 429 helicopters S/N 57001 and 57211, this proposed AD
would require, within 400 hours TIS after the effective date of this
proposed AD and thereafter at intervals not to exceed 400 hours TIS,
performing the visual inspection of the TR gearbox support assembly,
visually inspecting or borescope inspecting each rivet inside the
tailboom, performing the tactile inspection, and accomplishing the
applicable corrective actions described previously.

Differences Between This Proposed AD and the Transport Canada AD

    Transport Canada AD CF-2021-15 requires replacing any rivets, and
repairing any gaps that exceed 0.005 in (0.127 mm), in accordance with
an approved Bell structural repair scheme, and submitting certain
information to the manufacturer, whereas this proposed AD would require
removing the rivets from service and repairing the gaps using an FAA-
approved method instead. Transport Canada AD CF-2021-15 requires
replacing any rivets if any gaps are 0.005 in (0.127mm) or less,
whereas this proposed AD would require removing the rivets from
service.
    Transport Canada AD CF-2021-15 also requires for certain serial-
numbered helicopters that have accumulated less than 300 hours air
time, or have replaced a certain part-numbered TR gearbox support
assembly and have accumulated less than 300 hours air time since the
replacement, within 100 hours air time or 6 months upon reaching 300
hours air time, whichever occurs first, performing the visual
inspection of the TR gearbox support assembly, visually inspecting or
borescope inspecting each rivet inside the tailboom, performing the
tactile inspection, and accomplishing the applicable corrective actions
described previously, whereas this proposed AD would require these
actions for certain helicopters before accumulating 400 total hours TIS
and for certain other helicopters, before the helicopter accumulates
400 total hours TIS since the replacement of a certain part-numbered TR
gearbox support assembly.
    Additionally, Transport Canada AD CF-2021-15 requires for certain
serial-numbered helicopters that have accumulated 300 hours air time or
more, or have replaced a certain part-numbered TR gearbox support
assembly and have accumulated 300 hours air time or more since the
replacement, within 100 hours air time or 6 months, whichever occurs
first, performing the visual inspection of the TR gearbox support
assembly, visually inspecting or borescope inspecting each rivet inside
the tailboom, performing the tactile inspection, and accomplishing the
applicable corrective actions described previously, whereas this
proposed AD would require these actions within 100 hours TIS after the
effective date of this AD.
    Finally, Transport Canada AD CF-2021-15 requires repeating the
visual inspection of the TR gearbox support assembly, the visual
inspection or borescope inspection of each rivet inside the tailboom,
performing the tactile inspection, and accomplishing the applicable
corrective actions described previously at intervals not to exceed 400
hours air time or 12 months, whichever occurs first, whereas this
proposed AD would require for certain serial-numbered helicopters, the
repetitive inspections to occur within 400 hours TIS after the
effective date of this AD, and thereafter at intervals not to exceed
400 hours TIS.

Interim Action

    The FAA considers this proposed AD would be an interim action. Once
final action has been identified, the FAA might consider further
rulemaking.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would
affect 120 helicopters of U.S. Registry. Labor rates are estimated at
$85 per work-hour. Based on these numbers, the FAA estimates the
following costs to comply with this proposed AD.
    Visually inspecting the surface of the TR gearbox support assembly
would take about 0.5 work-hour for an estimated cost of $43 per
inspection and $5,160 for the U.S. fleet per inspection.
    If required, replacing any affected rivets would take about 1 work-
hour and parts would cost about $110 per rivet for an estimated cost of
$195 per rivet replacement.
    If required, measuring gaps would take about 0.5 work-hour for an
estimated cost of $43 per helicopter.
    If required, repairing any gaps would take up to about 1 work-hour
for an estimated cost of up to $85 per repair.
    Visually inspecting or borescope inspecting the inside of the
tailboom would take about 0.5 work-hour for an estimated cost of $43
per inspection and $5,160 for the U.S. fleet per inspection.
    Performing a tactile inspection would take about 0.5 work-hour for
an estimated cost of $43 per inspection and $5,160 for the U.S. fleet
per inspection.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.

Regulatory Findings

    The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
    For the reasons discussed, I certify this proposed regulation:

    (1) Is not a ``significant regulatory action'' under Executive
Order 12866,
    (2) Would not affect intrastate aviation in Alaska, and
    (3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness
directive:

Bell Textron Canada Limited: Docket No. FAA-2021-1074; Project
Identifier MCAI-2021-00447-R.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive
(AD) by February 7, 2022.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bell Textron Canada Limited Model 429
helicopters, serial numbers (S/N) 57001 and subsequent, certificated
in any category.

(d) Subject

    Joint Aircraft Service Component (JASC) Code: 5302, Rotorcraft
tail boom.

(e) Unsafe Condition

    This AD was prompted by reports of failed rivets between the
tailboom skin and the tail rotor (TR) gearbox support assembly. The
FAA is issuing this AD to detect failed rivets and rivets with
inadequate grip length. The unsafe condition, if not addressed,
could result in deterioration of the joint structural integrity,
detachment of the TR gearbox support assembly, and loss of
helicopter control.

(f) Compliance

    Comply with this AD within the compliance times specified,
unless already done.

(g) Required Actions

    (1) As of the effective date of this AD, for Model 429
helicopters S/N 57002 through 57210 inclusive and S/N 57212 and
subsequent that have accumulated less than 300 total hours time-in-
service (TIS), before accumulating 400 total hours TIS; or for Model
429 helicopters S/N 57002 through 57210 inclusive and S/N 57212 and
subsequent that have replaced the TR gearbox support assembly part
number (P/N) 429-034-701-101 or P/N 429-035-705-101 and the
helicopter has accumulated less than 300 total hours TIS since the
replacement of the TR gearbox support assembly, before accumulating
400 total hours TIS since the replacement:
    (i) Visually inspect the external surface of the TR gearbox
support assembly for any rivet heads that have separated from their
tail. If there are any rivet heads that have separated from their
tail, before further flight, measure any gaps between the TR gearbox
support assembly and the tailboom skin by following the
Accomplishment Instructions, Part I, paragraphs 9.b. through 9.d of
Bell Alert Service Bulletin 429-19-47, Revision B, dated January 27,
2021 (ASB 429-19-47 Rev B).
    (A) If there are no gaps or if any gap measures less than 0.005
in (0.127 mm), before further flight, remove the rivets from
service.
    (B) If there are any gaps that are equal to or exceed 0.005 in
(0.127 mm), before further flight, repair the gaps in accordance
with an FAA-approved method, and remove the rivets from service.
    (ii) Borescope inspect or use a light source and mirror to
visually inspect each rivet inside the tailboom for any missing
rivet tails, any rivet tails resting at the bottom of the tailboom,
and any rivet tails not resting against the tailboom skin.
    (A) If there are any missing rivet tails, or any rivet tails
resting at the bottom of the tailboom, before further flight,
measure any gaps between the TR gearbox support assembly and the
tailboom skin by following the Accomplishment Instructions, Part I,
paragraphs 9.b. through 9.d of ASB 429-19-47 Rev B, and perform the
corrective actions specified in paragraphs (g)(1)(i)(A) or (B) of
this AD as applicable.
    (B) If there are any rivet tails not resting against the
tailboom skin before further flight, remove the rivets from service.
    (iii) Perform a tactile inspection of the rivets identified in
Figure 1 of ASB 429-19-47 Rev B, by pulling on each rivet tail with
pliers or pulling by hand. If any rivet does not come out when
pulled with pliers or when pulled by hand, before further flight,
remove the rivet from service.
    (2) For Model 429 helicopters S/N 57002 through 57210 inclusive
and S/N 57212 and subsequent that are not identified in paragraph
(g)(1) of this AD, within 100 hours TIS after the effective date of
this AD, perform the actions as specified in paragraph (g)(1)(i)
through (iii) of this AD.
    (3) For Model 429 helicopters S/N 57002 through 57210 inclusive
and S/N 57212 and subsequent, within 400 hours TIS after the initial
inspections required by paragraph (g)(1) or (2) of this AD, as
applicable to your helicopter, and thereafter at intervals not to
exceed 400 hours TIS, accomplish the actions required by paragraphs
(g)(1)(i) through (iii) of this AD.
    (4) For Model 429 helicopters S/N 57001 and 57211, within 400
hours TIS after the effective date of this AD, and thereafter at
intervals not to exceed 400 hours TIS, accomplish the actions
required by paragraphs (g)(1)(i) through (iii) of this AD.

(h) Credit for Previous Actions

    This paragraph provides credit for the actions specified in
paragraphs (g)(1) and (2) of this AD, if those actions were
performed before the effective date of this AD using Bell Alert
Service Bulletin 429-19-47, Revision A, dated November 2, 2020, or
Bell Alert Service Bulletin 429-19-47, dated August 28, 2019.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, International Validation Branch, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the manager of the International Validation Branch, send
it to the attention of the person identified in paragraph (j)(1) of
this AD. Information may be emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.

(j) Related Information

    (1) For more information about this AD, contact Andrea Jimenez,
Aerospace Engineer, COS Program Management Section, Operational
Safety Branch, Compliance & Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY 11590; telephone (516) 228-
7330; email [email protected].
    (2) For service information identified in this AD, contact Bell
Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, Quebec J7J
1R4, Canada; telephone 1-450-437-2862 or 1-800-363-8023; fax 1-450-
433-0272; email [email protected]; or at https://www.bellflight.com/support/contact-support. You may view this
referenced service information at the FAA, Office of the Regional
Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort
Worth, TX 76177. For information on the availability of this
material at the FAA, call<PHONE_NUMBER>.
    (3) The subject of this AD is addressed in Transport Canada AD
CF-2021-15, dated April 14, 2021. You may view the Transport Canada
AD on the internet at https://www.regulations.gov in Docket No. FAA-
2021-1074.

    Issued on December 15, 2021.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-27622 Filed 12-22-21; 8:45 am]
BILLING CODE 4910-13-P