The below table provides a preliminary list of chemical products to be used on the Project (if stored volume exceeds United States Environmental Protection Agency (EPA) Reportable Quantities); the volume stored on location; their treatment, discharge, or disposal method and location; and any other necessary permit(s) pertaining to these chemical products. It is not anticipated that any additional permits will be required. The list below is preliminary and will be updated in the Facility Design Report and Facility Installation Report.*
| Chemical Product Used | Use | Volume Stored on Location or Contained in Equipment | Treatment, discharge, or disposal method and location | Manner of delivery to site | Quantity per Transfer and Number of Transfers |
| Synthetic Ester | OSS Transformer Cooling Oil | 159,482 liters (42,131 gallons) per OSS | Removed from transformer to service vessel during routine maintenance Material brought to port for disposal |
Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 2 years, based on conditions, if needed |
| Motor Oil | OSS Emergency Generator | 44 liters (12 gallons) per OTM | Removed from engineand brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Annually, based on conditions, if needed |
| Hydraulic oil | OSS Heavy Lift Crane | 1,267 liters (335 gallons) per OSS | Removed from hydraulic system and brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Annually, based on conditions, if needed |
| Diesel Oil | OSS Emergency Generator | 160,856 liters (42,494 gallons) per OSS | Removed from fuel storage tank brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
As required |
| Water/glycol | OSS Emergency Generator | 114 liters (30 gallons) per OSS | Removed from OSS components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 2 years |
| Grease | WTG bearings and auxiliary equipment | 355 liters (94 gallons) per WTG | Removed from WTG components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 2 years |
| Synthetic Ester | WTG Transformer Cooling Fluid | 4,500 liters (1,189 gallons) per WTG | Removed from transformer to service vessel during routine maintenance Material brought to port for disposal |
Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 2 years, based on conditions, if needed |
| Compressor oil | Rotor locking and rotor brake | 83 liters (22 gallons) per WTG | Removed from WTG components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 4 years, based on conditions, if needed |
| Lubricating oil | WTG Pitch and yaw gear and damper mass system lubricants | 323 liters (85 gallons) per WTG | Removed from WTG components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 4 years |
| Water Propylene Glycol mix | WTG Coolant | 1,300 liters (343 gallons) per WTG |
Removed from cooling system and brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
Every 2 years |
| Fire suppressant (foam) | WTG | 75 liters (20 gallons) per WTG | Collected and brought to port for appropriate disposal as necessary | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
As needed |
| Fire suppressant IG541 inert gas bottles | WTG | 9 × 5.91 kg | Removed from WTG components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
As needed |
| Ion exchange resin | WTG | 27.5 liters (7.3 gallons) per WTG | Removed from WTG components brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
As needed |
| SF₆ gas | WTG and OSS Switchgear | n/a | Removed from WTG and OSS components and brought to port for disposal | Transferred via installation or service vessel at time of installation | As needed |
| Portable fire extinguishers | Foam and CO₂ extinguishers | 9 L Foam and 6 kg CO₂ per extinguisher | Removed from WTG and OSS components and brought to port for disposal | Transferred via installation or service vessel at time of installation Transferred via service vessels during O&M phase |
As needed |
*OSS = offshore substation; WTG = wind turbine generator
Submitted to the Bureau of Ocean Energy Management
26 February 2022
US Wind Construction and Operations Plan. Volume 1, Appendix H: Chemical Products Used and Stored