Supplemental Use Regulations
Maximum Permitted Sound Levels Adjacent to Residential Districts | ||
|---|---|---|
Originating Zoning District/Time | Maximum One-Hour Leq1 (dbA) | |
CC, GC, LI | ||
7:00 a.m. to 10:00 p.m. | 70 | |
10:00 p.m. to 7:00 a.m. | 55 | |
GI | ||
7:00 a.m. to 10:00 p.m. | 70 | |
10:00 p.m. to 7:00 a.m. | 55 | |
NOTE: | |
1 | Leq is the constant sound level that in a given situation and time period conveys the same sound energy as the actual time varying A-weighted sound. It is the average sound level and accurately portrays the sound the human ear actually hears. |
Table 205-206 Shielding and Filtering Requirements for Light Sources | |||
|---|---|---|---|
Fixture Lamp Type | Shielded | Filtered | |
Low-pressure sodium | Fully | None | |
High-pressure sodium | Fully | None | |
Metal halide (Note 1) | Fully | Yes (Note 3) | |
Fluorescent | Fully (Note 4) | Yes (Note 5) | |
Quartz (Note 2) | Fully | None | |
Incandescent greater than 100W | Fully | None | |
Incandescent 100W or less | None | None | |
Mercury vapor | Prohibited | Prohibited | |
Fossil fuel | None | None | |
Glass tubes filled with inert gases | None | None | |
Other sources | By approval of the Planning Director and Public Works Director | By approval of the Planning Director and Public Works Director | |
NOTES: | |
Note 1: Should be in enclosed luminaries. | |
Note 2: Not considered an incandescent light source. | |
Note 3: Most glass, acrylic, or translucent enclosures meet filtering requirements. | |
Note 4: Outdoor signs constructed of translucent materials with internal lighting do not require shielding. | |
Note 5: Warm, white, natural lamps are recommended. |
Supplemental Use Regulations
Maximum Permitted Sound Levels Adjacent to Residential Districts | ||
|---|---|---|
Originating Zoning District/Time | Maximum One-Hour Leq1 (dbA) | |
CC, GC, LI | ||
7:00 a.m. to 10:00 p.m. | 70 | |
10:00 p.m. to 7:00 a.m. | 55 | |
GI | ||
7:00 a.m. to 10:00 p.m. | 70 | |
10:00 p.m. to 7:00 a.m. | 55 | |
NOTE: | |
1 | Leq is the constant sound level that in a given situation and time period conveys the same sound energy as the actual time varying A-weighted sound. It is the average sound level and accurately portrays the sound the human ear actually hears. |
Table 205-206 Shielding and Filtering Requirements for Light Sources | |||
|---|---|---|---|
Fixture Lamp Type | Shielded | Filtered | |
Low-pressure sodium | Fully | None | |
High-pressure sodium | Fully | None | |
Metal halide (Note 1) | Fully | Yes (Note 3) | |
Fluorescent | Fully (Note 4) | Yes (Note 5) | |
Quartz (Note 2) | Fully | None | |
Incandescent greater than 100W | Fully | None | |
Incandescent 100W or less | None | None | |
Mercury vapor | Prohibited | Prohibited | |
Fossil fuel | None | None | |
Glass tubes filled with inert gases | None | None | |
Other sources | By approval of the Planning Director and Public Works Director | By approval of the Planning Director and Public Works Director | |
NOTES: | |
Note 1: Should be in enclosed luminaries. | |
Note 2: Not considered an incandescent light source. | |
Note 3: Most glass, acrylic, or translucent enclosures meet filtering requirements. | |
Note 4: Outdoor signs constructed of translucent materials with internal lighting do not require shielding. | |
Note 5: Warm, white, natural lamps are recommended. |