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Department of Environmental Quality
GDForum ID: 416
Description of Proposed Guidance Document Changes
This guidance supersedes all agency Monitoring of Lakes and Reservoirs prior to 2020 and provides direction to agency staff on how to implement lake/reservoir water quality monitoring. Significant updates to this guidance since 2002 include implementing the new surface water quality standard regulation (9 VAC 25-260-187), effective as of August 14, 2007, which added nutrient criteria for significant man-made lakes and reservoirs and the two natural lakes in Virginia. Triennial Review updates to 9 VAC 25-260-187 include the definition of lacustrine zone, which allows for dissolved oxygen sampling throughout the lake to determine thermal stratification and adds several additional lakes (8) to the significant lakes list. Updates to 9VAC25-260-50 include applying dissolved oxygen and pH criteria only to the epilimnion of thermally-stratified lakes listed in 9 VAC 25-260-187. In 2020, all references to lake/reservoir assessment methodology were moved to DEQ’s Water Quality Assessment Guidance Manual. Changes to this document are shown as strikeouts/underlines in the proposed document.
[This forum has been finalized.]
Guidance Document(s) for this Comment Forum
Document ID
Document Title
Current Document
Proposed Document
GM09-2005
Monitoring and Assessment of Lakes and Reservoirs
Document
Proposed Document
Posted with Revised Changes on 12/14/2020
Contact Information
Name:
Sandra Mueller
Title:
Environmental Manager
Email:
sandra.mueller@deq.virginia.gov
Address:
Department of Environmental Quality
P.O. Box 1105
City:
Richmond
State:
VA
Zip:
23218
Phone:
(804)698-4324
Fax:
(804)698-4032
Contact Information
The Virginia Register
Publication Date: 11/9/2020
Volume: 37 Issue: 6
The public comment period began upon publication and lasted for 30 days. It ended on 12/9/2020.
There were no comments
Effective Date: 12/11/2020
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