If I remove impervious cover from my site before I get the LDA permit, can I count that impervious surface under the existing conditions?
I was told that
I need to complete a Stormwater Facility Maintenance and Monitoring Agreement before my permits can be released. Where can I get this agreement, and where do I get the information to complete it?
Can I pay a fee-in-lieu for stormwater treatment at my site?
- No, the County does not offer a fee-in-lieu program.
Can I purchase offsite stormwater credits?
- No, the County does not offer the purchase of offsite stormwater credits.
Can a sump discharge connect to an infiltration trench (BMP) if there is no storm system in the near vicinity?
- No, sump pump water must be day lighted at least 10 feet away from the property boundary.
Do the new stormwater management regulations consider pools as pervious or impervious area?
- Pool is considered to be impervious area.
Are roof drains from a single family house allowed to tie into the public storm sewer directly, assuming the stormwater management requirements for the site are met?
- Yes, the roof drain can be connected to the public storm sewer. If the connection is to the pipe instead of a structure, the builder or engineer should add a note on the plan indicating the location of the core drilled connection to the existing storm pipe, with prior coordination with the DES inspector.
Per Section 48-55.A. Placement of Buildings and Structures, it states: “All new construction of and substantial improvements to residential structures shall be set back fifteen (15) feet horizontally from the location of the base flood elevation boundary.” Does that mean that a driveway is NOT required to be set back 15’ horizontally since it is not part of the structure, and can abut the floodplain limits?
- Yes, driveway is not a structure, it can be inside the 15 feet zone.
How long does the review of the As-built certification documentation usually take?
After plugging in all of a project’s data into the runoff reduction spreadsheet (v. 3.0) the results state “No further TP load reduction required (Required – Achieved < 0.0005 lb/yr)”, does this mean that the project meets the TP load reduction requirement?
- No, the required TP load reduction has always been 0, including any decimal places (it was not previously rounded down to 0.00), therefore it continues to be 0, including any decimal places.