Table 3-5 - Noise Levels Generated by Construction Activities
|
CONSTRUCTION ACTIVITY
|
NOISE LEVEL AT 50 FEET (15 METERS) DB(A) LMAX
|
NOISE LEVEL AT 50 FEET (15 METERS) DB(A) LEQ
|
|
|
Solar Field and Power Collections Systems
|
|||
|
Install BMP Measures (Part of Site Preparation)
|
75.0
|
71.3
|
|
|
Site Preparation (Solar Block Arrays)
|
85.0
|
83.6
|
|
|
Site Preparation (Roads)
|
85.0
|
82.3
|
|
|
Install Fencing
|
75.0
|
71.3
|
|
|
Install Tracking System Posts
|
84.4
|
78.3
|
|
|
Install Support Structures
|
75.0
|
71.3
|
|
|
Install Inverters and Switchgear & Sub-Structure
|
80.6
|
76.1
|
|
|
Direct Current (DC) and Alternating Current (AC) Cable Installation (Underground)
|
80.7
|
78.4
|
|
|
DC and AC Cable Installation (Above-Grade)
|
75.0
|
71.3
|
|
|
Module Installation
|
75.0
|
71.3
|
|
|
Fire Protection
|
80.9
|
80.8
|
|
|
O&M Building
|
74.7
|
68.3
|
|
|
Substation
|
|||
|
Steel Structures
|
80.6
|
73.8
|
|
|
Insulators, Bus, and Electrical Equipment
|
80.6
|
73.8
|
|
|
Control Wiring
|
80.6
|
74.9
|
|
|
Cleanup
|
85.0
|
82.7
|
|
Table 3-6 Noise Levels Generated by Operation and Maintenance Activities
|
SOURCE
|
NOISE LEVEL AT 50 FEET (15 METERS) DB(A) LEQ
|
|
Maintenance
|
|
|
Pickup truck
|
71
|
|
Solar Panels and Substations
|
|
|
Tracker
|
41
|
|
Inverter 1 MW
|
51
|
|
Transformer 2 MW
|
42
|
Source both tables: (DOI BLM, 2019)