Code of Federal Regulations Title 23. Highways 23 CFR Pt. 772, Table 1 TABLE 1 TO PART 772—NOISE ABATEMENT CRITERIA

A

57

60

Exterior

Lands on which serenity and quiet are of extraordinary significance and serve an important public need and where the preservation of those qualities is essential if the area is to continue to serve its intended purpose.

B ³

67

70

Exterior

Residential.

C ³

67

70

Exterior

Active sport areas, amphitheaters, auditoriums, campgrounds, cemeteries, day care centers, hospitals, libraries, medical facilities, parks, picnic areas, places of worship, playgrounds, public meeting rooms, public or nonprofit institutional structures, radio studios, recording studios, recreation areas, Section 4(f) sites, schools, television studios, trails, and trail crossings.

D

52

55

Interior

Auditoriums, day care centers, hospitals, libraries, medical facilities, places of worship, public meeting rooms, public or nonprofit institutional structures, radio studios, recording studios, schools, and television studios.

E ³

72

75

Exterior

Hotels, motels, offices, restaurants/bars, and other developed lands, properties or activities not included in A-D or F.

F

Agriculture, airports, bus yards, emergency services, industrial, logging, maintenance facilities, manufacturing, mining, rail yards, retail facilities, shipyards, utilities (water resources, water treatment, electrical), and warehousing.

G

Undeveloped lands that are not permitted.