Stay informed with industry news, regulatory & management requirement updates and featured Caltha project summaries.
South Dakota DENR General Permit for Stormwater Discharges Associated with Industrial Activities expired September 30, 2017, and has been administratively extended. DENR has sent a renewal notice to each permitted facility with instructions for submitting a Notice of...read more
Effective April 1, 2018, South Dakota's General Permit for Stormwater Discharges Associated with Construction Activities was reissued. New applications for permits must be submitted at least 15 days prior to the project start date on the new forms beginning May 1,...read more
The Iowa Department of Natural Resources general permit for industrial stormwater water discharges was revised in 2018 and the new permit became effective on March 1, 2018. The revised permit includes additional requirements which apply to those facilities that report...read more
Caltha LLP Project Summary Project: Phase 1 ESA For Warehousing and Distribution Center Client: Owner Location(s): Bloomington, Illinois Key Elements: Phase 1 Site investigation, Tier I Vapor Encroachment Screening Assessment, ASTM E2600-10, Overview: Caltha LLP...read more
Caltha LLP Project Summary Project: Phase 1 ESA For Former WWTP Site Client: Prospective Buyer Location(s): Minneapolis / Saint Paul, Minnesota Metropolitan Area Key Elements: Phase 1 Site investigation, Tier I Vapor Encroachment Screening Assessment, ASTM E2600-10,...read more
The Minnesota Department of Health (MDH) re-evaluates all human health risk guidance values developed since 2008 on a routine basis to keep existing health-based guidance values up to date with the most recent MDH risk assessment methodology and the available science....read more