Agencies | Governor
Virginia Regulatory Town Hall
Agency
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.
 
Guidance Document(s) for this Comment Forum
 
Document ID Document Title Document in Effect Proposed Document
GM09-2005 Monitoring and Assessment of Lakes and Reservoirs pdf Document     pdf Proposed Document
 
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
 
The Virginia Register
 

Publication Date: 11/9/2020    Volume: 37  Issue: 6
The public comment period will begin upon publication and extend for 30 days ending on 12/9/2020.

Planned Effective Date:  12/11/2020 
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