Timelines shown below are approximate. We update this page infrequently.
Stormwater credits and modeling
(Winter, 2015) Updates include the following:
- Updates to existing sections on modeling (Introduction to stormwater modeling, Available stormwater models and selecting a model, Detailed information on specific models, What is the pre-development condition).
- A page discussing volume, TSS and phosphorus credits will be created for each structural BMP discussed in the Manual.
TMDLs
(Winter, 2015) The following new information will incorporated into the Manual.
- Overview of TMDLs
- Summary of TMDL requirements in stormwater permits
- Forms and guidance for TMDLs
- Links for TMDLs
Updates for stormwater infiltration topics
(Winter, 2015) A new section on stormwater infiltration will be added to the Manual and will include the following.
- basic concepts related to the infiltration of stormwater
- Best Management Practices that can be used for stormwater infiltration
- select monitoring studies that investigated groundwater quality impacts associated with stormwater infiltration
- a discussion of area-wide or regional groundwater quality or quantity impacts associated with stormwater infiltration
- stormwater pretreatment considerations for protecting shallow groundwater quality
- groundwater mounding considerations for infiltrated stormwater
- groundwater separation distances for infiltrated stormwater
- updates on stormwater infiltration constraints
- considerations for stormwater infiltration in Wellhead Protection Areas
- considerations and options for stormwater infiltration in areas with contaminated soils or contaminated groundwater