DWQ-2024-007326

October 15, 2024Phillip Heck, PhD, P.E., General ManagerCentral Valley Water Reclamation Facility800 West Central Valley RoadSalt Lake City, Utah [e-mail] EmailSubject:Staging
Sites for the Land Application of Biosolids for Agriculture at Property's,Central Valley Water Reclamation FacilityBiosolids Permit No. UTL-023492Dear Mr.Heck,This is an update to letters
sent in 2002 and 2003 approving the staging of biosolids during the non-planting seasons. We understand and agree with your need to stage biosolids in bulk prior to land application.
However, we believe staging biosolids for more than ninety days presents a potential impact to ground waters, and we believe some additional best management practices (BMPs) are needed
to protect surface waters as well. The additional BMPs along with the measures you proposed are as follows:1.Biosolids shall not be stored at a staging site for more than ninety days.2.Appropriate
berms shall be constructed as needed to prevent runoff from leaving the staging areas and possibly entering surface waters of the State.3.If a staging site is creating problems (runoff,
off site tracking, etc., the staging site shall be relocated (stop storing at that particular staging site immediately, and the next truckload(s) of biosolids shall be stored at another
staging site, and the biosolids stored at the original staging site shall be land applied as soon as weather conditions permit).4.All staging sites shall be rotated on an ongoing basis
(after a staging site is used, it shall not be used again within five years).5.After a staging site is used, it shall be plowed and seeded as soon as practical (for the uptake of any
nutrients by the crop that may have accumulated at the staging site).We believe these additional BMPs, as well as the BMPs listed in your Biosolids Management Permit should minimize
risks to ground and surface waters of the State and, therefore, your plan is approved accordingly.Should you have any additional concerns, question or comments, please call Dan Griffin
at [phone] or email him at [e-mail] thank you and your staff for your cooperation of working with the DWQ for the protection of waters of the State.Sincerely,Danielle
LenzJohn K. Mackey, P.E.DirectorUtah Division of Water QualityJM/DL/DG/ch
DWQ-2024-00