Integrate boiler attributes from EIA 860 EnvrAssoc and EnvrEquip tables

[jdangerx]

This issue scopes out a subset of work identified in the issues #1189, #1162, #889.

EIA 860 Schedule 6 (Environmental Equipment and Environmental Association) reports data on the environmental quality control equipment, investments, regulatory standards and control strategies associated with particular boilers. Much of this information will need to be organized outside of our existing EIA860 data structure, as multiple pieces of control equipment may be associated with multiple boilers. More immediately, however, data associated with a boiler ID can be integrated into the existing harvesting process.

The following tables are associated 1:1 with boilers and should be incorporated into the existing boilers_eia860 and boilers_entity_eia objects:

• [ ] boiler_info
• [ ] emissions_control_strategies

The following tables have m:m associations with boilers and cannot be incorporated into the existing boilers_eia860 and boilers_entity_eia objects:

• [ ] boilers_cooling
• [ ] boilers_mercury
• [ ] boilers_nox
• [ ] boilers_pm
• [ ] boilers_so2
• [ ] boilers_stack_flue

These associations will be addressed as part of next steps in #1162 .

[e-belfer]

All 1:1 boiler attribute tables have been merged in #2319. Additional data will be integrated in future steps of #1162. Closing this issue.