| Title | Use of USGS 1980 Hydrologic Unit Map of the US to Determine Appropriate Hydrologic Unit Code for Compensatory Mitigation using Mitigation Bank Credits |
| Document ID | 01-2001 |
| Effective Date | 1/8/2001 |
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Posted On 6/5/2003
Document on Town Hall
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| [9 VAC 25] | State Water Control Board |