Column Name: POTW_TREATMENT_1

Description: The amount of a POTW transfer that is esimated as being treated off-site. In reporting years (RY) 2013 and prior, chemicals that appear in a POTW transfer and are identified as non-metals (see TRI_CHEM_INFO.METAL_IND) are calculated as being 100 percent treated.

In reporting years 2014 and after, default percentages were established for each chemical (through experimentation and estimation) that indicate how much of a POTW transfer is released and how much is treated. These percentages, available in TRI_CHEM_INFO.DEFAULT_PERCENTAGE_TO_81C, TRI_CHEM_INFO.DEFAULT_PERCENTAGE_TO_81D and TRI_CHEM_INFO.DEFAULT_PERCENTAGE_TO_87, determine how much of a transfer is considered to be treated. The percentage that appear in DEFAULT_PECENTAGE_TO_87 ( (Total off-site treatment) is multiplied by the transfer amount to calculate POTW_TREATMENT.

Facilities can optionally override these percentages when reporting. In which case, the percentage that a facility reported in TRI_TRANSFER_QUANTITY.potw_percentage_to_87 would be multiplied by the transfer amount to calculate POTW_TREATMENT. If the flag TRI_TRANSFER_QUANTITY.potw_percentage_provided equals ""YES"" then the facility did override the default percentages and provided their own. The facility provided values are then be used to calculate the POTW_TREATMETREATMENT. If TRI_TRANSFER_QUANTITY.potw_percentage_provided equals ""NO"" then the default values are used to calculate POTW_TREATMENT.
Envirofacts Table Name(s):

• TRI_FORM_R

• Data Source:
• Data Element:
• ADABAS File:

Properties:

• Type:NUMBER
• Length:21,7

Definition Source:TRI Data Dictionary