Master Stormwater Compliance Affidavit Creation
Budget: $30 – $250 USD
Please review siteplan. Sign the attached Master Stormwater Compliance form, needs to be filled out using reference material below. Reviewer Needs to have a certified Architect license in Florida or a Professional Engineer from Florida.
Project Identification
Lot 12, Grayton Bayou Subdivision
Parcel ID: 28‑2S‑19‑24510‑000‑0120
Owner: Carlo Porco
Address: Lot 12, Grayton Bayou, Walton County, FL
Master Stormwater Plan Reference
This residence is designed to comply with the Grayton Bayou Master Stormwater Plan.
Drainage patterns follow the approved subdivision sheet‑flow design.
No deviations from the subdivision stormwater intent are proposed.
Impervious Surface Calculation
Roof footprint: 1,790 sq ft
Covered porches (front + rear): 238 sq ft
Garage slab: 455 sq ft
Driveway: 700 sq ft
Walkways: 40 sq ft
Total Impervious Area: 3,230 sq ft
Drainage Pattern
Stormwater runoff from the structure will sheet‑flow to the front, rear, and side yards.
No concentrated discharge is created.
No redirection of stormwater toward adjacent lots occurs.
No underground piping or French drains are proposed.
Preservation / Wetland Buffer Compliance
All structures, including roof overhangs, remain outside the wetland preservation buffer.
No fill, cut, grading, or construction occurs inside the buffer.
No utilities or drainage features encroach into the buffer.
Site Grading
Positive drainage will be maintained away from the foundation.
Minimum 2% slope for the first 10 feet around the structure.
No ponding will occur.
Existing grades outside the building footprint will not be modified.
No grading or disturbance will occur within preservation areas.
(Site plan citations: “NO MODIFICATION TO EXISTING GRADES OUTSIDE THE BUILDING FOOTPRINT.”
“NO FILL, CUT, OR REGRADING WITHIN DESIGNATED PRESERVATION AREAS.”
“DRAINAGE… WILL BE DIRECTED AWAY FROM THE STRUCTURE AND ALLOWED TO SHEET‑FLOW OVER EXISTING GRADES WITHIN LOT 12.”)
Stormwater Features
Gutters will be installed.
Downspouts will discharge to splash blocks.
Sheet‑flow drainage will be maintained.
No discharge into preservation areas.
No adverse impact to neighboring lots.
No Adverse Impact Statement
The proposed residence does not increase stormwater runoff onto adjacent lots.
Drainage patterns match the subdivision’s approved stormwater design.
No concentrated flow is created.
No adverse impact is expected.
Engineer Certification
The Florida Professional Engineer certifies that the stormwater design for Lot 12 (Parcel 28‑2S‑19‑24510‑000‑0120) is in full compliance with the Grayton Bayou Master Stormwater Plan and Walton County Land Development Code. Impervious area, drainage patterns, grading, and preservation buffer protection meet all applicable requirements.
Project Identification
Lot 12, Grayton Bayou Subdivision
Parcel ID: 28‑2S‑19‑24510‑000‑0120
Owner: Carlo Porco
Address: Lot 12, Grayton Bayou, Walton County, FL
Master Stormwater Plan Reference
This residence is designed to comply with the Grayton Bayou Master Stormwater Plan.
Drainage patterns follow the approved subdivision sheet‑flow design.
No deviations from the subdivision stormwater intent are proposed.
Impervious Surface Calculation
Roof footprint: 1,790 sq ft
Covered porches (front + rear): 238 sq ft
Garage slab: 455 sq ft
Driveway: 700 sq ft
Walkways: 40 sq ft
Total Impervious Area: 3,230 sq ft
Drainage Pattern
Stormwater runoff from the structure will sheet‑flow to the front, rear, and side yards.
No concentrated discharge is created.
No redirection of stormwater toward adjacent lots occurs.
No underground piping or French drains are proposed.
Preservation / Wetland Buffer Compliance
All structures, including roof overhangs, remain outside the wetland preservation buffer.
No fill, cut, grading, or construction occurs inside the buffer.
No utilities or drainage features encroach into the buffer.
Site Grading
Positive drainage will be maintained away from the foundation.
Minimum 2% slope for the first 10 feet around the structure.
No ponding will occur.
Existing grades outside the building footprint will not be modified.
No grading or disturbance will occur within preservation areas.
(Site plan citations: “NO MODIFICATION TO EXISTING GRADES OUTSIDE THE BUILDING FOOTPRINT.”
“NO FILL, CUT, OR REGRADING WITHIN DESIGNATED PRESERVATION AREAS.”
“DRAINAGE… WILL BE DIRECTED AWAY FROM THE STRUCTURE AND ALLOWED TO SHEET‑FLOW OVER EXISTING GRADES WITHIN LOT 12.”)
Stormwater Features
Gutters will be installed.
Downspouts will discharge to splash blocks.
Sheet‑flow drainage will be maintained.
No discharge into preservation areas.
No adverse impact to neighboring lots.
No Adverse Impact Statement
The proposed residence does not increase stormwater runoff onto adjacent lots.
Drainage patterns match the subdivision’s approved stormwater design.
No concentrated flow is created.
No adverse impact is expected.
Engineer Certification
The Florida Professional Engineer certifies that the stormwater design for Lot 12 (Parcel 28‑2S‑19‑24510‑000‑0120) is in full compliance with the Grayton Bayou Master Stormwater Plan and Walton County Land Development Code. Impervious area, drainage patterns, grading, and preservation buffer protection meet all applicable requirements.