Subsurface Gravel Wetland¶

This page is source-backed, but it carries an explicit classification caution. In the live source corpus, subsurface gravel wetlands are governed by BMP Manual Chapter 11.5, even though the current site navigation still places this page under the Chapter 9 branch. The page therefore stays anchored to the actual source bundle instead of pretending the site taxonomy and source taxonomy already match.

Structured citation evidence for this page lives in the sibling claim manifest.

Overview¶

In the live source set, a subsurface gravel wetland is a Chapter 11.5 wetland-treatment concept with a strong water-quality and hydraulic-path focus. The key source-backed point is that this page should be read through its Chapter 11 source basis first, not through its current navigation label.

Source Mapping¶

This route is retained for site navigation, but the live citations layer flags a taxonomy or classification caution for it.

Route caution: Subsurface Gravel Wetlands are classified in the BMP Manual under Ch. 11 (Non-GI). The current concept mapping places them in Ch. 9 (Small-Scale GI). This is a classification error OR an intentional reclassification - needs explicit documentation.
Route type: canonical
2023 source bundle: Chapter 11.5 (2023_BMP_11_5) - Subsurface Gravel Wetlands (Non-GI per Manual)
2026 source bundle: Chapter 11.5 (2026_BMP_11_5) - Subsurface Gravel Wetlands (Non-GI per Manual)

Key verified claims already tied to this page manifest: - Subsurface gravel wetlands are source-backed through Chapter 11.5. - The page keeps an explicit site-taxonomy versus source-taxonomy caution. - Subsurface-gravel-wetland maintenance stays tied to vegetation, hydraulics, invasive-species control, and media performance.

Design Criteria¶

The reconciled design criteria below come from the live crosswalk and page-level claim set, not from the older narrative snapshot.

This route does not have a dedicated parameter table in the crosswalk, so the controlling criteria stay tied to the verified claims and canonical source-bundle mapping below.

Source-backed criteria that still control this route: - Subsurface gravel wetlands are source-backed through Chapter 11.5. - The page keeps an explicit site-taxonomy versus source-taxonomy caution. - Subsurface-gravel-wetland maintenance stays tied to vegetation, hydraulics, invasive-species control, and media performance.

Siting Constraints¶

The current source-backed siting review should focus on:

whether the site can actually support the Chapter 11.5 wetland-treatment layout
whether the page is being used to imply GI status that the live source set does not establish by default
whether vegetation management, hydraulic-path control, and maintenance access are realistic

Maintenance¶

Maintenance remains wetland-centered:

keep vegetation condition and invasive-species control in scope
monitor hydraulic distribution and inlet-zone loading
treat clogging and treatment-path degradation as direct performance problems

Source Bundles¶

Use these source bundles when checking the live extracted text or paired OCR evidence:

2023 bundle: Chapter 11.5 (2023_BMP_11_5) - Subsurface Gravel Wetlands (Non-GI per Manual)
2026 bundle: Chapter 11.5 (2026_BMP_11_5) - Subsurface Gravel Wetlands (Non-GI per Manual)