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V. REFERENCES Alavanja M, Goldstein I and Susser M. 1978. A case control study of gastrointestinal and urinary tract cancer mortality and drinking water chlorination. In: Water Chlorination: Environmental Impact and Health Effects. Vol. 2. Jolley RL, Gorchev H and Hamilton DH Jr, eds. Ann Arbor Science Publishers, Ann Arbor, MI. Anderson EL and Carcinogen Assessment Group of the US EPA. 1983. Alternative approaches in use to assess cancer risk. Risk Anal 3:277-295. Bogen KT, Hall LC and McKone TE. 1989. Draft. Health Risk Assessment of Chloroform in Drinking Water. Report No. UCRL - 21170. Environmental Sciences Division. Livermore National Laboratory, Livermore CA. Brenniman GR, Vasilomanolakis-Lagos J, Amsel J, Namekata T and Wolff AH. 1980. Case-control study of cancer deaths in Illinois communities served by chlorinated or nonchlorinated water. In: Water Chlorination: Environmental Impact and Health Effects. Vol. 3. Jolley RL, Brungs WA and Cumming RB, eds. Ann Arbor Science, Ann Arbor, MI. Bull RJ, Brown JM, Meierhenry EA, Jorgenson TA, Robinson M and Stober JA. 1986. Enhancement of the hepatotoxicity of chloroform in B6C3F1 mice by corn oil: implications for chloroform carcinogenesis. Environ Health Perspect 69:49-58. California Department of Health Services (CDHS) 1990. Health Effects of Chloroform. Office of Environmental Health Hazard Assessment, Air Toxicology and Epidemiology Section, Berkeley, CA. Cantor KP, Hoover R, Mason TJ and McCabe LJ. 1978. Association of cancer mortality with halomethanes in drinking water. J Natl Cancer Inst 61:979-985. Cantor KP, Hoover R, Hartge P, Mason TJ, Silverman DT, Altman R, Austin DF, Child MA, Key CR, Marrett LD, Myers MH, Narayana AS, Levin LI, Sullivan JW, Swanson GM, Thomas DB and West DW. 1987. Bladder cancer, drinking water source, and tap water consumption: a case-control study. J Natl Cancer Inst 79:1269-1279. Carlo GL and Mettlin CJ. 1980. Cancer incidence and trihalomethane concentrations in a public drinking water system. Am J Public Health 70:523-525. Gottlieb MS and Carr JK. 1982. Case-control cancer mortality study and chlorination of drinking water in Louisiana. Environ Health Perspect 46:169-177. Heywood R, Sortwell RJ, Noel PRB, Street AE, Prentice DE, Roe FJC, Wadsworth PF and Worden AN. 1979. Safety evaluation of toothpaste containing chloroform. III. Long-term study in beagle dogs. J Environ Pathol Toxicol 2:835-851. 199
Hogan MD, Chi Py, Hoel DG and Mitchell TJ. 1979. Association between chloroform levels in finished drinking water supplies and various site-specific cancer mortality rates. J Environ Pathol Toxicol 2:873- 887. Jorgenson TA, Meierhenry EF, Rushbrook CJ, Bull RJ and Robinson M. 1985. Carcinogenicity of chloroform in drinking water to male Osborne-Mendel rats and female B6C3F1 mice. Fundam Appl Toxicol 5:760-769. Lawrence CE, Taylor PR, Trock BJ and Peilly AA. 1984. Trihalomethanes in drinking water and human colorectal cancer. J Natl Cancer Inst 72:563-568. National Cancer Institute (NCI) 1976. Report on Carcinogenesis Bioassay of Chloroform. National Cancer Institute Carcinogenesis Program, Bethesda, MD. Hazardous Substance Data Bank (HSDB) (Internet version) 1998. National Library of Medicine, Bethesda MD. Newberne PM, Weigert J and Kula N. 1979. Effects of dietary fat on hepatic mixed-function oxidases and hepatocellular carcinoma induced by aflatoxin B1 in rats. Cancer Res 39:3986-3991. Palmer AK, Street AE, Roe FJC, Worden AN and Van Abbe NJ. 1979. Safety evaluation of toothpaste containing chloroform. II. Long term studies in rats. J Environ Pathol Toxicol 2:821-833. Reuber MD. 1979. Carcinogenicity of chloroform. Environ Health Perspect 31:171-182. Roe FJC, Palmer AK, Worden AN and Van Abbe NJ. 1979. Safety evaluation of toothpaste containing chloroform. I. Long-term studies in mice. J Environ Pathol Toxicol 2:799-819. Tumasonis CF, McMartin DN and Bush B. 1985. Lifetime toxicity of chloroform and bromodichloromethane when administered over a lifetime in rats. Ecotoxicol Environ Safety 9:233-240. Wilkins JR III and Comstock GW. 1981. Source of drinking water at <strong>home</strong> and site-specific cancer incidence in Washington County, Maryland. Am J Epidemiol 114:178-190. 200
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Air Toxics Hot Spots Program Risk A
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Prepared by: John D. Budroe, Ph.D.
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This document is one of five docume
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TABLE OF CONTENTS PREFACE i INTRODU
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N-Nitrosodimethylamine 401 N-Nitros
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Hot Spots Unit Risk and Cancer Pote
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Additional ATES and PETS documents
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data. If several data sets (dose an
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US EPA Calculation of Carcinogenic
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exposure to a concentration of 1 µ
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incidences for each of the dose lev
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computes the surface area of a sphe
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Comparison of Hot Spots Cancer Unit
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Gold, L., de Veciana, M., Backman,
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Animal Studies Rats Woutersen et al
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ased on sufficient evidence of carc
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ACETAMIDE CAS No: 60-35-5 I. PHYSIC
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Methodology Expedited Proposition 6
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cancer mortality. However, US EPA (
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Table 2. Lung adenoma incidence in
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Table 3 (continued). Acrylamide-ind
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Robinson M, Bull RJ, Knutsen GL, Sh
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Also, a trend was observed correlat
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eported. Cause-specific expected de
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Bio/Dynamics Inc. conducted a study
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examination. Interim sacrifices wer
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Table 8. Tumor incidence in male an
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Gaffey WR and Strauss ME. 1981. A m
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(technical grade; 98% pure) by gava
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International Agency for Research o
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still alive in the low-dose control
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ANILINE CAS No: 62-53-3 I. PHYSICAL
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fibrosarcomas, stromal sarcomas, ca
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ARSENIC (INORGANIC) CAS No: 7440-38
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elationship between arsenic exposur
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al. (1988) did not induce lung tumo
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A risk assessment was also conducte
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Chen C, Chuang Y, You S, Lin T and
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Schrauzer G, White D, McGinness J,
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Table 1: Summary of epidemiologic s
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had at least one animal demonstrati
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mesothelioma, recommended lifetime
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National Institute for Occupational
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BENZENE CAS No: 71-43-2 I. PHYSICAL
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Animal Studies Available experiment
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Table 3: Summary of NTP bioassay re
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Table 4: Summary of benzene low-dos
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Maltoni C, Conti B and Cotti G. 198
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a benign tumor of the kidney. No ba
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al. (1968) found no tumors in lifet
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following relationship, where C(t 1
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Miakawa M. and Yoshida O. 1975. Pro
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human population and that BPDE-DNA
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demonstrated the tumor initiating a
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Table 4: Bronchoalveolar tumors fro
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Table 5: IARC groupings of PAHs, mi
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Table 6 (continued): IARC Group 3 P
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Potency Equivalency Factors (PEF) f
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This was rounded to a PEF of 0.1. 1
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experiment (Takayama et al., 1985)
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Deutsch-Wenzel RP, Brune H, Grimmer
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Krewski D, Thorslund T and Withey J
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U.S. Environmental Protection Agenc
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Sorahan et al. (1983) studied cance
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Lijinsky W. 1986. Chronic bioassay
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the drinking water (Schroeder and M
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Table II. Effective dose, upper-bou
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BIS(2-CHLOROETHYL)ETHER CAS No: 111
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IV. DERIVATION OF CANCER POTENCY Ba
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BIS(CHLOROMETHYL)ETHER CAS No: 542-
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Table 1. Bis(chloromethyl)ether-ind
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Drew RT, Laskin S, Kuschner M and N
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ates for the 1968 U.S. male populat
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Table 1: Incidence of primary tumor
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National Institute of Occupational
Page 157 and 158: was less than 0.05 when controlling
Page 159 and 160: up period. The final cohort include
Page 161 and 162: If the cadmium-exposed workers incl
Page 163 and 164: on personnel records (20%); (3) eva
Page 165 and 166: were exposed to a continuous (23.5
Page 167 and 168: procedure (NLIN), the parameters we
Page 169 and 170: International Agency for Research o
Page 171 and 172: Two reports were published on cance
Page 173 and 174: Mendel rats, respectively), and sub
Page 175 and 176: Eschenbrenner A and Miller E. 1946.
Page 177 and 178: III. CARCINOGENIC EFFECTS Human Stu
Page 179 and 180: cancers, were less than expected. T
Page 181 and 182: and no cases of cancer (although cl
Page 183 and 184: There was a statistically significa
Page 185 and 186: NTP (1982a) also conducted an carci
Page 187 and 188: Several pathologists have independe
Page 189 and 190: hepatocellular adenoma/carcinoma tu
Page 191 and 192: carcinogenic potency may decline in
Page 193 and 194: Cochrane W, Singh J and Miles W. 19
Page 195 and 196: North Atlantic Treaty Organization,
Page 197 and 198: CHLORINATED PARAFFINS (average chai
Page 199 and 200: ased on dose-response data for beni
Page 201 and 202: chloroform in drinking water with k
Page 203 and 204: Overall, the present epidemiologica
Page 205 and 206: female dogs received toothpaste bas
Page 207: Calculated q 1 * values from the ab
Page 211 and 212: Table 1. Study design summary for N
Page 213 and 214: V. REFERENCES California Environmen
Page 215 and 216: toluidine. Followup of this subcoho
Page 217 and 218: feeding studies on by NCI (1979) us
Page 219 and 220: CHROMIUM (HEXAVALENT) CAS No: 18540
Page 221 and 222: expected rate may be inflated becau
Page 223 and 224: Oral Borneff et al. (1968) exposed
Page 225 and 226: CREOSOTE (COAL TAR-DERIVED) CAS No:
Page 227 and 228: from an inhalation exposure study (
Page 229 and 230: U.S. Environmental Protection Agenc
Page 231 and 232: Table 1. Study design summary for N
Page 233 and 234: Methodology Expedited Proposition 6
Page 235 and 236: Table 1. Experimental design for ca
Page 237 and 238: Hazardous Substance Data Bank (HSDB
Page 239 and 240: Table 1: Tumor induction in Fischer
Page 241 and 242: Hazardous Substance Data Bank (HSDB
Page 243 and 244: Table 1. Experimental design of 2,4
Page 245 and 246: Methodology Expedited Proposition 6
Page 247 and 248: Additional analysis of these data b
Page 249 and 250: IV. DERIVATION OF CANCER POTENCY Ba
Page 251 and 252: Jackson RJ, Greene CJ, Thomas JT, M
Page 253 and 254: Table 1. Tumor incidence in rats ex
Page 255 and 256: Girard R, Tolot F, Martin P and Bou
Page 257 and 258: exposed more than 16 years before t
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interpretation of dose extrapolatio
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1, 1-DICHLOROETHANE CAS No: 75-34-3
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Table 1b. Study design for carcinog
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National Cancer Institute (NCI) 197
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mice, hepatocellular carcinoma inci
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V. REFERENCES California Department
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DAB/day by gavage for the life of t
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2,4-DINITROTOLUENE CAS No: 121-14-2
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Ellis et al.(1979) (also reported b
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Final Statement of Reasons for OAL,
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to the small sample size and short
Page 281 and 282:
In an inhalation study, Torkelson e
Page 283 and 284:
V. REFERENCES American Conference o
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EPICHLOROHYDRIN CAS No: 106-89-8 I.
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espiratory tumors were noted in the
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Table 4. Epichlorohydrin-induced fo
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Konishi Y, Kawabata A, Denda A, Ike
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exposed to arsenicals for 20 months
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espectively (all statistically sign
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ETHYLENE DICHLORIDE CAS No: 107-06-
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Several factors have been suggested
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myelogenous leukemias (4 and 8 year
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statistically significant. CDHS not
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combined with the incidence in the
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incidence of primary brain tumors.
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Table 6 (continued): Organ/Sex Mali
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An Upper 95% Confidence Limit (UCL)
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ETHYLENE THIOUREA (ETU) CAS No: 96-
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male and female rats. Tumor inciden
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FORMALDEHYDE CAS No: 50-00-0 I. PHY
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presented an extension of a previou
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Methodology In developing a spectru
Page 325 and 326:
Casanova M, Morgan KT, Steinhagen W
Page 327 and 328:
Tobe M, Kaneko T, Uchida Y, Kamata
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Table 1. Hexachlorobenzene-induced
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50 pups (F 1 ) of each sex were ran
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Ertürk E, Lambrecht RW, Peters HA,
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Table 1. Liver hepatoma incidence i
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1988). An airborne unit risk factor
Page 339 and 340:
HYDRAZINE CAS No: 302-01-2 I. PHYSI
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Methodology Inhalation A linearized
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LEAD AND LEAD COMPOUNDS (INORGANIC)
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and other occupational carcinogens
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y inhalation is similar for rats an
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Goyer RA. 1992. Nephrotoxicity and
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LINDANE (g-Hexachlorocyclohexane) C
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Using these relationships, a human
Page 355 and 356:
METHYL TERT-BUTYL ETHER (MTBE) CAS
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Tumor incidences according to the r
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kidney changes indicative of chroni
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Interspecies scaling for oral doses
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Table 4 (continued): Dose Response
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Experimental Pathology Laboratories
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Animal Studies Male and female HaM/
Page 369 and 370:
Gold L, Sawyer C, Magaw R, Backman
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Using the statistical tests (one-ta
Page 373 and 374:
Table 1: Methylene chloride-induced
Page 375 and 376:
Significant treatment-related incre
Page 377 and 378:
National Toxicology Program (NTP) 1
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noted; however, the study duration
Page 381 and 382:
Crump KS, Howe RB, Van Landingham C
Page 383 and 384:
Table 1. Michler’s ketone-induced
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NICKEL AND NICKEL COMPOUNDS CAS No:
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the high exposure group was 14.0. A
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male and 121 female rats, was expos
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2.1 - 2.6 × 10 -4 (µg/m 3 ) -1 .
Page 393 and 394:
Page 395 and 396:
The increased incidence of bladder
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A linearized multistage procedure w
Page 399 and 400:
N-NITROSO-N-METHYLETHYLAMINE CAS No
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Hazardous Substance Data Bank (HSDB
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propylamine in drinking water at 0.
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N-NITROSODIETHYLAMINE CAS No: 55-18
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Table 2. Treatment groups, concentr
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California Department of Health Ser
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animals and the second generation t
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ationale for selection of the OEHHA
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A unit risk value based upon air co
Page 417 and 418:
N-NITROSODIPHENYLAMINE CAS No: 86-3
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Methodology Dosage estimates of NDP
Page 421 and 422:
Crump KS, Howe RB. 1984. The multis
Page 423 and 424:
Table 1. P-Nitrosodiphenylamine-ind
Page 425 and 426:
N-NITROSOMORPHOLINE CAS No: 59-89-2
Page 427 and 428:
Page 429 and 430:
N-NITROSOPIPERIDINE CAS No: 100-75-
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Table 3. N-Nitrosopiperidine-induce
Page 433 and 434:
Crump KS, Howe RB, Van Landingham C
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testicular tumors were noted in the
Page 437 and 438:
PARTICULATE MATTER FROM DIESEL-FUEL
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etired railroad workers who had had
Page 441 and 442:
employment (χ 2 test for trend: p
Page 443 and 444:
elevated smoking-adjusted risk esti
Page 445 and 446:
Table 1 (continued): Reference Miln
Page 447 and 448:
Table 1 (continued): Reference Damb
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Table 1 (continued): Reference Burn
Page 451 and 452:
Table 1 (continued): Reference Raff
Page 453 and 454:
Table 1 (continued): Epidemiologica
Page 455 and 456:
Table 1 (continued): Epidemiologica
Page 457 and 458:
Table 1 (continued): Reference Wegm
Page 459 and 460:
Animal Studies Section 6.1 (Animal
Page 461 and 462:
The variability, or heterogeneity,
Page 463 and 464:
estimate for those studies for whic
Page 465 and 466:
Figure 1: Estimates of Relative Ris
Page 467 and 468:
q 1 * = Excess relative risk × CA
Page 469 and 470:
Table 3: Number of Workers in the E
Page 471 and 472:
u nexposed workers at zero concentr
Page 473 and 474:
for each µg/m 3 of diesel exhaust
Page 475 and 476:
Table 4: Values from Unit Risk for
Page 477 and 478:
their findings that a reasonable es
Page 479 and 480:
Garshick E, Schenker M, Woskie S an
Page 481 and 482:
Lewis T, Green, FH MW, Burg J and L
Page 483 and 484:
Rothman K. 1986. Modern epidemiolog
Page 485 and 486:
PENTACHLOROPHENOL CAS No: 87-86-5 I
Page 487 and 488:
The default lifespan for mice is 10
Page 489 and 490:
documented. An excess risk from ski
Page 491 and 492:
B6C3F 1 mice and F344/N rats were e
Page 493 and 494:
This model, rather than a time depe
Page 495 and 496:
POLYCHLORINATED BIPHENYLS (PCBs) CA
Page 497 and 498:
several benign adenomatous lesions
Page 499 and 500:
Ito et al. (1973) exposed groups of
Page 501 and 502:
could not be characterized by chlor
Page 503 and 504:
exposure (all pathways and mixtures
Page 505 and 506:
National Toxicology Program 1993. T
Page 507 and 508:
Table 1. Potassium bromate-induced
Page 509 and 510:
1,3-PROPANE SULTONE CAS No: 1120-71
Page 511 and 512:
Page 513 and 514:
PROPYLENE OXIDE CAS No: 75-56-9 I.
Page 515 and 516:
oxide. In the NTP carcinogenicity s
Page 517 and 518:
1,1,2,2-TETRACHLOROETHANE CAS No: 7
Page 519 and 520:
assumed a body weight of 70 kg and
Page 521 and 522:
total); an untreated control group
Page 523 and 524:
TOLUENE DIISOCYANATE CAS No: 26471-
Page 525 and 526:
Animal Studies The National Toxicol
Page 527 and 528:
Mortillaro PT and Schiavon M. 1982.
Page 529 and 530:
male or female rats. Increases in h
Page 531 and 532:
TRICHLOROETHYLENE CAS No: 79-01-6 I
Page 533 and 534:
A mortality analysis of a cohort of
Page 535 and 536:
elative to that of the controls whi
Page 537 and 538:
applied or metabolized. The range o
Page 539 and 540:
Katz RM and Jowett D. 1981. Female
Page 541 and 542:
10,000 ppm 2,4,6-trichlorophenol in
Page 543 and 544:
Page 545 and 546:
Bionetics Research Laboratories. 19
Page 547 and 548:
control; females: 6/10 exposed, 0/1
Page 549 and 550:
over controls (p < 0.04). Other tum
Page 551 and 552:
was increased (100/314 exposed vs.
Page 553 and 554:
Table 3. Cancer potency estimates f
Page 555 and 556:
Crouch E. 1983. Uncertainties in in
Page 557 and 558:
VINYL CHLORIDE CAS No: 75-01-4 I. P
Page 559 and 560:
Table 1 (continued): A Summary of E
Page 561 and 562:
al., 1983). Histopathology of all o
Page 563 and 564:
Table 3: Tumor incidences in 100 pp
Page 565 and 566:
experiment, animals were exposed to
Page 567 and 568:
Experiment BT1 Most previous risk a
Page 569 and 570:
No statistical analyses of mortalit
Page 571 and 572:
Table 11 gives unit risk estimates
Page 573 and 574:
Bertazzi PA, Villa A, Foa V, Saia B
Page 575 and 576:
Nicholson WJ, Hammond EC, Seidman H
Page 577 and 578:
immunotoxicity, reproductive toxici
Page 579 and 580:
scheme. TEFs for two major noncance
Page 581 and 582:
NATO/CCMS (1988a) Pilot Study on In
Page 583 and 584:
Table 2 Toxicity Equivalency Factor
Page 585 and 586:
Table 4 A Comparison of CTEF- and I
Page 587 and 588:
Office of Environmental Health Haza
Page 589 and 590:
Group 4: The agent is probably not
Page 591 and 592:
TECHNICAL SUPPORT DOCUMENT FOR DESC
Page 593 and 594:
US EPA IRIS Inhalation Unit Risk an
Page 595 and 596:
TECHNICAL SUPPORT DOCUMENT FOR DESC
Page 597 and 598:
as appropriate, and revise IRIS fil
Page 599 and 600:
Chemical Exposure Route Study Type
Page 601 and 602:
Page 603 and 604:
Page 605 and 606:
Methyl tert-butyl ether p. 5: Added
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