NS 2023 Annual Report For EPA

• IBM Index Class Name: Hydrology
• Doc Date: 8/28/2025
• Archive: No

Natural Soda LLC 2023 Project Status Report & Annual Plan of Development
10 January 2024

• June 5, 2023, DRMS conducted an onsite 2nd quarter inspection focused on the
reclamation success of recently reclaimed areas. Pad 8H, 93-4H, 91-2H, BG-9,
BG-5 and DS-4 were visited and observed. DRMS made recommendations on
weed abatement and reseeding for some locations. No problems or violations
were noted during this inspection.
• DRMS inspected the M-1999-051 Rock School Lease on June 5, 2023 prior to
the P&A of the seven monitor wells associated with the permit. Wells,
vegetation, and reclamation efforts were observed. No problems or violations
were noted during this inspection.
• DRMS conducted an onsite 3rd quarter inspection on August 28, 2023 to inspect
the stormwater management and the 18H newly constructed pads and access
roads. DRMS observed trash and sedimentation surrounding the plant area
and affecting the functionality of stormwater drainage. DRMS requested trash,
ditches, and berms surrounding the plant to be cleaned and modified to alleviate
the drainage issues by October 31, 2023. NS conducted the requested
corrective actions and submitted documentation to DRMS on October 27, 2023.
The DRMS was satisfied with the corrective actions. No additional problems or
violations were noted during the inspection.
• On November 30, 2023 DRMS conducted the 4th quarter onsite inspection of the
NS operation. This site visit was to observe the Secondary Containments
located within the plant. DRMS observed many chemicals throughout the plant
inspection they did not have a record of and requested NS to provide all MSDS
to DRMS for said chemicals by February 16, 2024. On December 18, 2023
DRMS acknowledged the receipt of seven MSDS sheets and was satisfied that
no additional action was necessary. No additional problems or violations were
noted during this inspection.

Colorado Division of Water Resources (DWR)
• A senior water right holder placed a call on the White River effective December
1, 2022. NS initiated its surface water augmentation plan (88CW420) on
December 19,, 2022. NS periodically released water during 2023 from the
WSW-3 and WSW-4 to meet obligations for White River surface runoff
requirements. NS released 1,241,300 gallons in 2023.
• NS notified DWR of the P&A completion for the AM-2, MWA-2, MWB-2, MWD-
1, MWD-2, and MWU-2 Rock School Lease groundwater monitoring wells on
September 18, 2023.