Facility Detail

* CHWMEG Inc. is not affiliated with this facility in any way.

Clean Harbors

Knolls, UT, USA

Owner:Clean Harbors, Inc.
a.k.a./f.k.a.:Grassy Mountain; Safety-Kleen; USPCI; Laidlaw
CHWMEG Report Number:H113.23
Member Interest:This facility is currently being tracked by 71 members
(Member interest is not related to how many members use this facility.)
*Location Map:Google Maps
Review Program
(Visit Date):		2026 (Pending, 4/8/2026: Scheduled Date)
2025 (6/11/2025)
2024 (4/29/2024)
2023 (3/1/2023)
2022 (4/19/2022)
2021 (6/29/2021)
2020 (6/18/2020)
2019 (6/10/2019)
2018 (7/20/2018)
2017 (3/29/2017)
2016 (4/5/2016)
2015 (4/2/2015)
2014 (4/2/2014)
2013 (3/13/2013)
2012 (2/29/2012)
2011 (3/15/2011)
2009 (5/21/2009)
2008 (4/24/2008)
2006 (7/6/2006)
2004 (4/15/2004)
2003 (5/8/2003)
2002 (6/19/2002)
2000 (7/11/2000)
1998 (5/12/1998)
EPA ID:UTD991301748
Description of Services:The facility provides landfill disposal for RCRA- and TSCA-regulated waste. Wastes may be stabilized with chemical reagents prior to landfill disposal. Additionally, the site manages PCB-containing electric equipment (e.g., transformers) by draining transformer liquid (collected for off-site incineration) and flushing prior to on-site landfill disposal. The facility also consolidates liquid mercury for subsequent offsite transfer, and evaporates non-hazardous liquid waste using a synthetic-lined open-top impoundment. PFAS wastes (such as fire-fighting liquid and foam) are accepted on a case-by-case basis for stabilization or direct landfill disposal.
Description Date:2025 Facility Review Program
Facility Location Map:

*CHWMEG, Inc. cannot guarantee the accuracy of the maps. Maps are for informational purposes only. The latitude and longitude for this map are from the most recent CHWMEG facility review.
CHWMEG's facility reviews assist its members with the management of their environmental / waste stewardship, sustainability, corporate responsibility programs. These are essential elements of any valid environmental, social justice, governance (E, S, G or ESG) initiatives.