5182
Data Processing, Hosting, and Related Services
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           5211
Monetary Authorities-Central Bank
                                                                            131
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           5242
Agencies, Brokerages, and Other Insurance Related Activities
                                                                             19
                                                                              3
                                                                              0
                                                                              0
                                                                              0
                                                                           5311
Lessors of Real Estate
                                                                             29
                                                                              4
                                                                              0
                                                                              0
                                                                              0
                                                                           5313
Activities Related to Real Estate
                                                                            231
                                                                             32
                                                                             18
                                                                              3
                                                                              0
                                                                           5323
General Rental Centers
                                                                            265
                                                                             37
                                                                             20
                                                                              4
                                                                              0
                                                                           5324
Commercial and Industrial Machinery and Equipment Rental and Leasing
                                                                            113
                                                                             16
                                                                              9
                                                                              2
                                                                              0
                                                                           5413
Architectural, Engineering, and Related Services
                                                                            856
                                                                            120
                                                                             65
                                                                             12
                                                                              0
                                                                           5415
Computer Systems Design and Related Services
                                                                            121
                                                                             17
                                                                              9
                                                                              2
                                                                              0
                                                                           5416
Management, Scientific, and Technical Consulting Services
                                                                            487
                                                                             68
                                                                             37
                                                                              7
                                                                              0
                                                                           5417
Scientific Research and Development Services
                                                                            111
                                                                             15
                                                                              8
                                                                              2
                                                                              0
                                                                           5419
Other Professional, Scientific, and Technical Services
                                                                            125
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           5611
Office Administrative Services
                                                                            118
                                                                             17
                                                                              9
                                                                              2
                                                                              0
                                                                           5613
Employment Services
                                                                            716
                                                                            100
                                                                             55
                                                                             10
                                                                              0
                                                                           5614
Business Support Services
                                                                             12
                                                                              2
                                                                              0
                                                                              0
                                                                              0
                                                                           5616
Investigation and Security Services
                                                                            474
                                                                             66
                                                                             36
                                                                              7
                                                                              0
                                                                           5617
Services to Buildings and Dwellings
                                                                            127
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           5621
Waste Collection
                                                                            250
                                                                             35
                                                                             19
                                                                              4
                                                                              0
                                                                           5622
Waste Treatment and Disposal
                                                                            432
                                                                             60
                                                                             33
                                                                              6
                                                                              0
                                                                           5629
Remediation and Other Waste Management Services
                                                                         16,282
                                                                          2,277
                                                                          1,246
                                                                            237
                                                                              4
                                                                           6111
Elementary and Secondary Schools
                                                                            123
                                                                             17
                                                                              9
                                                                              2
                                                                              0
                                                                           6112
Junior Colleges
                                                                            146
                                                                             20
                                                                             11
                                                                              2
                                                                              0
                                                                           6113
Colleges, Universities, and Professional Schools
                                                                             61
                                                                              8
                                                                              0
                                                                              1
                                                                              0
                                                                           6115
Technical and Trade Schools
                                                                            714
                                                                            100
                                                                             55
                                                                             10
                                                                              0
                                                                           6116
Other Schools and Instruction
                                                                          1,703
                                                                            238
                                                                            130
                                                                             25
                                                                              0
                                                                           6211
Offices of Physicians
                                                                             95
                                                                             13
                                                                              0
                                                                              1
                                                                              0
                                                                           6214
Outpatient Care Centers
                                                                             39
                                                                              5
                                                                              0
                                                                              1
                                                                              0
                                                                           6215
Medical and Diagnostic Laboratories
                                                                            439
                                                                             61
                                                                              0
                                                                              6
                                                                              0
                                                                           6219
Other Ambulatory Health Care Services
                                                                            270
                                                                             38
                                                                             21
                                                                              4
                                                                              0
                                                                           6221
General Medical and Surgical Hospitals
                                                                             31
                                                                              4
                                                                              0
                                                                              0
                                                                              0
                                                                           6222
Psychiatric and Substance Abuse Hospitals
                                                                             97
                                                                             14
                                                                              0
                                                                              1
                                                                              0
                                                                           6232
Residential Intellectual and Developmental Disability, Mental Health, and Substance Abuse Facilities
                                                                            250
                                                                             35
                                                                              0
                                                                              4
                                                                              0
                                                                           6241
Individual and Family Services
                                                                            126
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           6243
Vocational Rehabilitation Services
                                                                             10
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           7115
Independent Artists, Writers, and Performers
                                                                              8
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           7121
Museums, Historical Sites, and Similar Institutions
                                                                          1,461
                                                                            204
                                                                            112
                                                                             21
                                                                              0
                                                                           7131
Amusement Parks and Arcades
                                                                            287
                                                                             40
                                                                              0
                                                                              4
                                                                              0
                                                                           7139
Other Amusement and Recreation Industries
                                                                         43,406
                                                                          6,069
                                                                          3,321
                                                                            632
                                                                             12
                                                                           8111
Automotive Repair and Maintenance
                                                                          4,923
                                                                            688
                                                                            377
                                                                             72
                                                                              1
                                                                           8112
Electronic and Precision Equipment Repair and Maintenance
                                                                            764
                                                                            107
                                                                             58
                                                                             11
                                                                              0
                                                                           8113
Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
                                                                            397
                                                                             56
                                                                             30
                                                                              6
                                                                              0
                                                                           8114
Personal and Household Goods Repair and Maintenance
                                                                          2,329
                                                                            326
                                                                            178
                                                                             34
                                                                              1
                                                                           8122
Death Care Services
                                                                            145
                                                                             20
                                                                             11
                                                                              2
                                                                              0
                                                                           8131
Religious Organizations
                                                                             48
                                                                              7
                                                                              0
                                                                              1
                                                                              0
                                                                           8139
Business, Professional, Labor, Political, and Similar Organizations
                                                                          1,950
                                                                            273
                                                                            149
                                                                             28
                                                                              1
                                                                           9211
Executive, Legislative, and Other General Government Support
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9221
Justice, Public Order, and Safety Activities
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9231
Administration of Human Resource Programs
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9241
Administration of Environmental Quality Programs
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9251
Administration of Housing Programs, Urban Planning, and Community Development
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9261
Administration of Economic Programs
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           9281
National Security and International Affairs
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                       0
                                     Total
                                                                        360,128
                                                                         50,354
                                                                         27,369
                                                                          5,244
                                                                            143
[1] See Table 2, Column F
[2] "MRL" refers to "Medical Removal Level". OSHA's medical removal levels include  BLL >=50 ug/dL in Construction (NAICS 2361, 2362, 2373, 2383, 2389) and BLL >=60 ug/dL in General Industry.

Step 4: Use CDPH estimated number of cases per firm by NAICS to estimate the number of affected establishments by NAICS from the number of cases

The number of firms testing employees is estimated as the number of employees tested (Table 4) divided by the average number of employees tested per firm (Table 5). Similarly, the number of firms with employees that have BLLs above each threshold is estimated as the number of employees with BLLs above each threshold (Table 4) divided by the average number of employees per firm above each threshold (Table 5). The number of firms with employees that have BLLs above each threshold is constrained to be less than or equal to the number of firms testing employees or the number of firms with employees above lower thresholds. The resulting estimated numbers of firms are presented in Table 6.
We note that by continuing to rely on data from California to estimate the number of workers per firm that test BLLs, we still assume that the ratio of the number of firms providing BLL testing to the employees tested from California is nationally representative. Similarly, we continue to assume that the allocation of BLL >=10 cases among NAICS in California is nationally representative.

Table 5: Average Number of BLL Cases per Firm
                                     NAICS
                               NAICS Description
             Average Number of Employees Tested per Establishment
Average Number of BLL Cases per Establishment Among the Establishments that Have at Least One Case [1,2]

                                   BLL >=5
                                   BLL >=10
                                   BLL >=25
                                BLL >= MRL[3]
                                                                           1151
Support Activities for Crop Production
                                                                            5.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           2122
Metal Ore Mining
                                                                            1.7
                                                                            1.4
                                                                            1.7
                                                                            1.0
                                                                            1.0
                                                                           2123
Nonmetallic Mineral Mining and Quarrying
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           2131
Support Activities for Mining
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           2211
Electric Power Generation, Transmission and Distribution
                                                                           27.4
                                                                            4.3
                                                                            1.3
                                                                            1.0
                                                                            1.0
                                                                           2212
Natural Gas Distribution
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           2213
Water, Sewage and Other Systems
                                                                           13.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           2361
Residential Building Construction
                                                                            3.3
                                                                            2.5
                                                                            2.4
                                                                            1.0
                                                                            1.0
                                                                           2362
Nonresidential Building Construction
                                                                           10.9
                                                                            4.1
                                                                            3.6
                                                                            2.1
                                                                            1.0
                                                                           2371
Utility System Construction
                                                                            8.2
                                                                            2.0
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                           2373
Highway, Street, and Bridge Construction
                                                                           11.6
                                                                            4.6
                                                                            3.8
                                                                            1.5
                                                                            1.0
                                                                           2379
Other Heavy and Civil Engineering Construction
                                                                           10.9
                                                                            8.0
                                                                            2.5
                                                                            1.0
                                                                            1.0
                                                                           2381
Foundation, Structure, and Building Exterior Contractors
                                                                            5.9
                                                                            1.2
                                                                            1.2
                                                                            2.0
                                                                            1.0
                                                                           2382
Building Equipment Contractors
                                                                            7.7
                                                                            4.0
                                                                            5.0
                                                                            1.8
                                                                            1.0
                                                                           2383
Building Finishing Contractors
                                                                           13.1
                                                                            7.7
                                                                            6.1
                                                                            2.6
                                                                            1.0
                                                                           2389
Other Specialty Trade Contractors
                                                                            7.4
                                                                            3.8
                                                                            3.3
                                                                            3.0
                                                                            1.0
                                                                           2399
Construction (Specific industry unknown)
                                                                            3.6
                                                                            3.0
                                                                            5.7
                                                                            1.0
                                                                            1.0
                                                                           3231
Printing and Related Support Activities
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3241
Petroleum and Coal Products Manufacturing
                                                                           15.9
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3251
Basic Chemical Manufacturing
                                                                            3.4
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3252
Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3255
Paint, Coating, and Adhesive Manufacturing
                                                                            4.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3259
Other Chemical Product and Preparation Manufacturing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3271
Clay Product and Refractory Manufacturing
                                                                            3.6
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3272
Glass and Glass Product Manufacturing
                                                                            1.5
                                                                            1.5
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                           3279
Other Nonmetallic Mineral Product Manufacturing
                                                                            2.0
                                                                            1.4
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3311
Iron and Steel Mills and Ferroalloy Manufacturing
                                                                           49.5
                                                                           51.0
                                                                           16.0
                                                                            1.0
                                                                            1.0
                                                                           3312
Steel Product Manufacturing from Purchased Steel
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3314
Nonferrous Metal (except Aluminum) Production and Processing
                                                                           34.8
                                                                           31.1
                                                                           20.2
                                                                            3.9
                                                                            1.0
                                                                           3315
Foundries
                                                                            3.4
                                                                            3.5
                                                                            2.9
                                                                            2.0
                                                                            1.0
                                                                           3323
Architectural and Structural Metals Manufacturing
                                                                            6.1
                                                                            6.0
                                                                            5.1
                                                                            2.0
                                                                            1.0
                                                                           3324
Boiler, Tank, and Shipping Container Manufacturing
                                                                            1.8
                                                                            1.7
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                           3325
Hardware Manufacturing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3327
Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing
                                                                           18.5
                                                                            9.0
                                                                            3.5
                                                                            1.0
                                                                            1.0
                                                                           3328
Coating, Engraving, Heat Treating, and Allied Activities
                                                                            2.8
                                                                            2.5
                                                                            2.5
                                                                            1.0
                                                                            1.0
                                                                           3329
Other Fabricated Metal Product Manufacturing
                                                                            7.2
                                                                            5.9
                                                                            3.9
                                                                            2.5
                                                                            4.0
                                                                           3333
Commercial and Service Industry Machinery Manufacturing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3336
Engine, Turbine, and Power Transmission Equipment Manufacturing
                                                                           21.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3339
Other General Purpose Machinery Manufacturing
                                                                            2.3
                                                                            2.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3341
Computer and Peripheral Equipment Manufacturing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3342
Communications Equipment Manufacturing
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3343
Audio and Video Equipment Manufacturing
                                                                            2.0
                                                                           16.9
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3344
Semiconductor and Other Electronic Component Manufacturing
                                                                           11.8
                                                                           14.5
                                                                           11.7
                                                                            6.0
                                                                            1.0
                                                                           3345
Navigational, Measuring, Electromedical, and Control Instruments Manufacturing
                                                                            1.8
                                                                            1.4
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                           3359
Other Electrical Equipment and Component Manufacturing
                                                                          105.8
                                                                           76.2
                                                                           50.8
                                                                            8.2
                                                                            1.0
                                                                           3363
Motor Vehicle Parts Manufacturing
                                                                            6.8
                                                                            6.7
                                                                            5.8
                                                                            3.0
                                                                            1.0
                                                                           3364
Aerospace Product and Parts Manufacturing
                                                                            8.5
                                                                            5.3
                                                                            7.0
                                                                            2.5
                                                                            1.0
                                                                           3366
Ship and Boat Building
                                                                           37.5
                                                                            3.8
                                                                            5.0
                                                                            1.0
                                                                            1.0
                                                                           3369
Other Transportation Equipment Manufacturing
                                                                            6.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           3399
Other Miscellaneous Manufacturing
                                                                            2.8
                                                                            2.2
                                                                            1.2
                                                                            1.0
                                                                            1.0
                                                                           4231
Motor Vehicle and Motor Vehicle Parts and Supplies Merchant Wholesalers
                                                                            1.3
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4236
Household Appliances and Electrical and Electronic Goods Merchant Wholesalers
                                                                            1.3
                                                                            1.3
                                                                            1.3
                                                                            1.0
                                                                            1.0
                                                                           4237
Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4238
Machinery, Equipment, and Supplies Merchant Wholesalers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4239
Miscellaneous Durable Goods Merchant Wholesalers
                                                                           18.2
                                                                           11.3
                                                                            4.7
                                                                            1.3
                                                                            1.0
                                                                           4244
Grocery and Related Product Merchant Wholesalers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4247
Petroleum and Petroleum Products Merchant Wholesalers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4413
Automotive Parts, Accessories, and Tire Stores
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4441
Building Material and Supplies Dealers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4451
Grocery Stores
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4483
Jewelry, Luggage, and Leather Goods Stores
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4511
Sporting Goods, Hobby, and Musical Instrument Stores
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4821
Rail Transportation
                                                                           15.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4841
General Freight Trucking
                                                                            7.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4842
Specialized Freight Trucking
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4851
Urban Transit Systems
                                                                           41.3
                                                                            5.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4881
Support Activities for Air Transportation
                                                                           38.7
                                                                            3.0
                                                                            2.3
                                                                            1.0
                                                                            1.0
                                                                           4883
Support Activities for Water Transportation
                                                                            1.4
                                                                            1.3
                                                                            1.3
                                                                            1.0
                                                                            1.0
                                                                           4884
Support Activities for Road Transportation
                                                                            1.0
                                                                            2.4
                                                                            1.4
                                                                            1.0
                                                                            1.0
                                                                           4911
Postal Service
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           4921
Couriers and Express Delivery Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5111
Newspaper, Periodical, Book, and Directory Publishers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5173
Wired and Wireless Telecommunications Carriers
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5182
Data Processing, Hosting, and Related Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5211
Monetary Authorities-Central Bank
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5242
Agencies, Brokerages, and Other Insurance Related Activities
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5311
Lessors of Real Estate
                                                                            4.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5313
Activities Related to Real Estate
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5323
General Rental Centers
                                                                            5.0
                                                                            2.0
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                           5324
Commercial and Industrial Machinery and Equipment Rental and Leasing
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5413
Architectural, Engineering, and Related Services
                                                                            3.9
                                                                            1.4
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5415
Computer Systems Design and Related Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5416
Management, Scientific, and Technical Consulting Services
                                                                            3.2
                                                                            1.3
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                           5417
Scientific Research and Development Services
                                                                            8.9
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5419
Other Professional, Scientific, and Technical Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5611
Office Administrative Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5613
Employment Services
                                                                            6.0
                                                                            2.2
                                                                            1.6
                                                                            1.0
                                                                            1.0
                                                                           5614
Business Support Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5616
Investigation and Security Services
                                                                            1.2
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5617
Services to Buildings and Dwellings
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5621
Waste Collection
                                                                            2.4
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           5622
Waste Treatment and Disposal
                                                                           11.1
                                                                            2.2
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                           5629
Remediation and Other Waste Management Services
                                                                            9.8
                                                                            3.1
                                                                            2.5
                                                                            1.3
                                                                            1.0
                                                                           6111
Elementary and Secondary Schools
                                                                           34.9
                                                                            6.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6112
Junior Colleges
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6113
Colleges, Universities, and Professional Schools
                                                                            5.8
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6115
Technical and Trade Schools
                                                                            1.0
                                                                            1.0
                                                                            1.2
                                                                            1.0
                                                                            1.0
                                                                           6116
Other Schools and Instruction
                                                                            2.3
                                                                            2.1
                                                                            2.1
                                                                            1.3
                                                                            1.0
                                                                           6211
Offices of Physicians
                                                                           11.0
                                                                            1.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6214
Outpatient Care Centers
                                                                            4.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6215
Medical and Diagnostic Laboratories
                                                                           51.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6219
Other Ambulatory Health Care Services
                                                                           29.0
                                                                            9.0
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                           6221
General Medical and Surgical Hospitals
                                                                            3.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6222
Psychiatric and Substance Abuse Hospitals
                                                                            8.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6232
Residential Intellectual and Developmental Disability, Mental Health, and Substance Abuse Facilities
                                                                           17.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6241
Individual and Family Services
                                                                            2.5
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           6243
Vocational Rehabilitation Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           7115
Independent Artists, Writers, and Performers
                                                                            3.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           7121
Museums, Historical Sites, and Similar Institutions
                                                                            4.7
                                                                            4.1
                                                                            3.8
                                                                            1.0
                                                                            1.0
                                                                           7131
Amusement Parks and Arcades
                                                                           93.0
                                                                            4.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           7139
Other Amusement and Recreation Industries
                                                                            6.5
                                                                            5.9
                                                                            5.4
                                                                            3.1
                                                                            1.3
                                                                           8111
Automotive Repair and Maintenance
                                                                            1.5
                                                                            1.2
                                                                            1.2
                                                                            1.0
                                                                            1.0
                                                                           8112
Electronic and Precision Equipment Repair and Maintenance
                                                                           26.5
                                                                            6.4
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                           8113
Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
                                                                            5.0
                                                                            4.0
                                                                            3.0
                                                                            1.0
                                                                            1.0
                                                                           8114
Personal and Household Goods Repair and Maintenance
                                                                            2.4
                                                                            2.4
                                                                            2.5
                                                                            1.0
                                                                            1.0
                                                                           8122
Death Care Services
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           8131
Religious Organizations
                                                                            4.0
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           8139
Business, Professional, Labor, Political, and Similar Organizations
                                                                            4.0
                                                                            3.8
                                                                            3.0
                                                                            1.0
                                                                            1.0
                                                                           9211
Executive, Legislative, and Other General Government Support
                                                                           14.3
                                                                            5.0
                                                                            5.0
                                                                            1.0
                                                                            1.0
                                                                           9221
Justice, Public Order, and Safety Activities
                                                                            6.0
                                                                            2.3
                                                                            2.1
                                                                            1.0
                                                                            1.0
                                                                           9231
Administration of Human Resource Programs
                                                                            6.7
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           9241
Administration of Environmental Quality Programs
                                                                           34.2
                                                                            2.6
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           9251
Administration of Housing Programs, Urban Planning, and Community Development
                                                                            2.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           9261
Administration of Economic Programs
                                                                           11.9
                                                                            1.7
                                                                            1.0
                                                                            1.0
                                                                            1.0
                                                                           9281
National Security and International Affairs
                                                                            2.9
                                                                            2.3
                                                                            1.0
                                                                            1.0
                                                                            1.0
[1] For example for Other Fabricated Metal Product Manufacturing (NAICS 3329), there are an average of 4.0 baseline cases among the firms that have at least one baseline case
[2] NAICS calculated to have less than one firm with baseline BLL cases are rounded to 1
[3] "MRL" refers to "Medical Removal Level". OSHA's medical removal levels include  BLL >=50 ug/dL in Construction (NAICS 2361, 2362, 2373, 2383, 2389) and BLL >=60 ug/dL in General Industry.

Table 6: Summary of Annual Number of Firms with BLL Tests and Cases
                                     NAICS
                               NAICS Description
                   Number of Firms where Employees Test BLLs
                        Number of Firms with BLL Cases

                                   BLL >=5
                                   BLL >=10
                                   BLL >=25
                                BLL >= MRL[1]
                                                                           1151
Support Activities for Crop Production
                                                                              2
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           2122
Metal Ore Mining
                                                                            466
                                                                             78
                                                                             36
                                                                             11
                                                                              0
                                                                           2123
Nonmetallic Mineral Mining and Quarrying
                                                                             17
                                                                              2
                                                                              0
                                                                              0
                                                                              0
                                                                           2131
Support Activities for Mining
                                                                             35
                                                                              5
                                                                              0
                                                                              0
                                                                              0
                                                                           2211
Electric Power Generation, Transmission and Distribution
                                                                             25
                                                                             22
                                                                             22
                                                                             10
                                                                              0
                                                                           2212
Natural Gas Distribution
                                                                            138
                                                                             19
                                                                             11
                                                                              2
                                                                              0
                                                                           2213
Water, Sewage and Other Systems
                                                                              9
                                                                              9
                                                                              0
                                                                              0
                                                                              0
                                                                           2361
Residential Building Construction
                                                                            769
                                                                            145
                                                                             83
                                                                             37
                                                                              2
                                                                           2362
Nonresidential Building Construction
                                                                            864
                                                                            323
                                                                            204
                                                                             67
                                                                              9
                                                                           2371
Utility System Construction
                                                                             87
                                                                             50
                                                                             36
                                                                             10
                                                                              1
                                                                           2373
Highway, Street, and Bridge Construction
                                                                            386
                                                                            136
                                                                             91
                                                                             43
                                                                              4
                                                                           2379
Other Heavy and Civil Engineering Construction
                                                                             51
                                                                             10
                                                                             10
                                                                              8
                                                                              1
                                                                           2381
Foundation, Structure, and Building Exterior Contractors
                                                                            251
                                                                            171
                                                                             95
                                                                             11
                                                                              1
                                                                           2382
Building Equipment Contractors
                                                                            488
                                                                            132
                                                                             58
                                                                             31
                                                                              4
                                                                           2383
Building Finishing Contractors
                                                                          2,746
                                                                            655
                                                                            452
                                                                            199
                                                                             34
                                                                           2389
Other Specialty Trade Contractors
                                                                          1,305
                                                                            354
                                                                            227
                                                                             47
                                                                              9
                                                                           2399
Construction (Specific industry unknown)
                                                                            516
                                                                             86
                                                                             25
                                                                             25
                                                                              0
                                                                           3231
Printing and Related Support Activities
                                                                            146
                                                                             20
                                                                             11
                                                                              2
                                                                              0
                                                                           3241
Petroleum and Coal Products Manufacturing
                                                                             11
                                                                             11
                                                                              0
                                                                              0
                                                                              0
                                                                           3251
Basic Chemical Manufacturing
                                                                             42
                                                                             20
                                                                             11
                                                                              2
                                                                              0
                                                                           3252
Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing
                                                                            175
                                                                             25
                                                                             13
                                                                              3
                                                                              0
                                                                           3255
Paint, Coating, and Adhesive Manufacturing
                                                                             38
                                                                             21
                                                                             12
                                                                              2
                                                                              0
                                                                           3259
Other Chemical Product and Preparation Manufacturing
                                                                            158
                                                                             22
                                                                             12
                                                                              2
                                                                              0
                                                                           3271
Clay Product and Refractory Manufacturing
                                                                             99
                                                                             50
                                                                             27
                                                                              5
                                                                              0
                                                                           3272
Glass and Glass Product Manufacturing
                                                                          5,156
                                                                            715
                                                                            398
                                                                            113
                                                                              2
                                                                           3279
Other Nonmetallic Mineral Product Manufacturing
                                                                             12
                                                                              2
                                                                              0
                                                                              0
                                                                              0
                                                                           3311
Iron and Steel Mills and Ferroalloy Manufacturing
                                                                             99
                                                                             13
                                                                             13
                                                                             13
                                                                              1
                                                                           3312
Steel Product Manufacturing from Purchased Steel
                                                                            184
                                                                             26
                                                                             14
                                                                              3
                                                                              0
                                                                           3314
Nonferrous Metal (except Aluminum) Production and Processing
                                                                          1,431
                                                                            224
                                                                            189
                                                                            187
                                                                             13
                                                                           3315
Foundries
                                                                          1,103
                                                                            152
                                                                            102
                                                                             28
                                                                              1
                                                                           3323
Architectural and Structural Metals Manufacturing
                                                                            994
                                                                            142
                                                                             91
                                                                             44
                                                                              2
                                                                           3324
Boiler, Tank, and Shipping Container Manufacturing
                                                                            261
                                                                             38
                                                                             23
                                                                              7
                                                                              0
                                                                           3325
Hardware Manufacturing
                                                                            166
                                                                             23
                                                                             13
                                                                              2
                                                                              0
                                                                           3327
Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing
                                                                             53
                                                                             15
                                                                             15
                                                                             14
                                                                              0
                                                                           3328
Coating, Engraving, Heat Treating, and Allied Activities
                                                                            256
                                                                             39
                                                                             22
                                                                             10
                                                                              0
                                                                           3329
Other Fabricated Metal Product Manufacturing
                                                                          1,100
                                                                            187
                                                                            154
                                                                             46
                                                                              1
                                                                           3333
Commercial and Service Industry Machinery Manufacturing
                                                                            133
                                                                             19
                                                                             10
                                                                              2
                                                                              0
                                                                           3336
Engine, Turbine, and Power Transmission Equipment Manufacturing
                                                                             17
                                                                             17
                                                                              0
                                                                              0
                                                                              0
                                                                           3339
Other General Purpose Machinery Manufacturing
                                                                             65
                                                                              9
                                                                              9
                                                                              2
                                                                              0
                                                                           3341
Computer and Peripheral Equipment Manufacturing
                                                                              6
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           3342
Communications Equipment Manufacturing
                                                                            146
                                                                             31
                                                                             17
                                                                              3
                                                                              0
                                                                           3343
Audio and Video Equipment Manufacturing
                                                                              4
                                                                              0
                                                                              0
                                                                              0
                                                                              0
                                                                           3344
Semiconductor and Other Electronic Component Manufacturing
                                                                            323
                                                                             37
                                                                             25
                                                                              9
                                                                              1
                                                                           3345
Navigational, Measuring, Electromedical, and Control Instruments Manufacturing
                                                                            394
                                                                             72
                                                                             37
                                                                             11
                                                                              0
                                                                           3359
Other Electrical Equipment and Component Manufacturing
                                                                            851
                                                                            165
                                                                            136
                                                                            136
                                                                             24
                                                                           3363
Motor Vehicle Parts Manufacturing
                                                                            994
                                                                            142
                                                                             89
                                                                             33
                                                                              2
                                                                           3364
Aerospace Product and Parts Manufacturing
                                                                            427
                                                                             96
                                                                             40
                                                                             21
                                                                              1
                                                                           3366
Ship and Boat Building
                                                                             23
                                                                             23
                                                                             13
                                                                             13
                                                                              0
                                                                           3369
Other Transportation Equipment Manufacturing
                                                                              9
                                                                              8
                                                                              0
                                                                              0
                                                                              0
                                                                           3399
Other Miscellaneous Manufacturing
                                                                            296
                                                                             53
                                                                             53
                                                                             12
                                                                              0
                                                                           4231
Motor Vehicle and Motor Vehicle Parts and Supplies Merchant Wholesalers
                                                                            305
                                                                             57
                                                                             31
                                                                              6
                                                                              0
                                                                           4236
Household Appliances and Electrical and Electronic Goods Merchant Wholesalers
                                                                            330
                                                                             46
                                                                             25
                                                                              6
                                                                              0
                                                                           4237
Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers
                                                                            130
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           4238
Machinery, Equipment, and Supplies Merchant Wholesalers
                                                                             12
                                                                              2
                                                                              0
                                                                              0
                                                                              0
                                                                           4239
Miscellaneous Durable Goods Merchant Wholesalers
                                                                            629
                                                                            141
                                                                            141
                                                                            130
                                                                              3
                                                                           4244
Grocery and Related Product Merchant Wholesalers
                                                                              7
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           4247
Petroleum and Petroleum Products Merchant Wholesalers
                                                                             14
                                                                              2
                                                                              0
                                                                              0
                                                                              0
                                                                           4413
Automotive Parts, Accessories, and Tire Stores
                                                                            136
                                                                             19
                                                                             10
                                                                              2
                                                                              0
                                                                           4441
Building Material and Supplies Dealers
                                                                            134
                                                                             19
                                                                             10
                                                                              2
                                                                              0
                                                                           4451
Grocery Stores
                                                                              8
                                                                              1
                                                                              0
                                                                              0
                                                                              0
                                                                           4483
Jewelry, Luggage, and Leather Goods Stores
                                                                            125
                                                                             18
                                                                             10
                                                                              2
                                                                              0
                                                                           4511