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Detention Pond Design in Metro Atlanta: GSMM Sizing Criteria, Costs, and Approval Timelines

In Metro Atlanta, a detention pond is sized against four separate criteria in the Georgia Stormwater Management Manual, not one. You must treat the water quality volume from the first 1.2 inches of rainfall, provide 24-hour extended detention of the 1-year 24-hour storm for channel protection, hold the post-development 25-year 24-hour peak discharge to the…

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Lake Lanier Dredging Permits, Site Plans, and Erosion Control: A Civil Engineer’s Guide for Hall, Forsyth, Dawson, Gwinnett, and Lumpkin Counties

Serving property owners, marinas, HOAs, and developers on Lake Sidney Lanier. Summary Dredging on Lake Sidney Lanier is regulated by the U.S. Army Corps of Engineers (USACE) Mobile District under Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act, with parallel review by Georgia EPD and by the…

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Forsyth County Subdivision Approval in 2026: Timeline, Costs & the 7 Most Common Rejections

Quick answer: A Forsyth County subdivision approval in 2026 typically takes 6 to 14 months from concept to recorded final plat, and requires four sequential submittals: concept plan, preliminary plat, land disturbance permit (construction plans), and final plat. County fees range from about $2,000 to $12,000+ depending on lot count, plus $15,000 to $75,000 in engineering,…

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Commercial Land Development Engineer in Atlanta: 12 Questions Developers Should Ask Before Hiring in 2026

Quick answer: Before hiring a commercial land development engineer in Atlanta, developers should verify Georgia PE licensure, confirm a Certificate of Authorization for the firm, ask for jurisdiction-specific project references, review sample plan sets, clarify fixed-fee vs. hourly billing, and ask directly who will stamp the drawings. The wrong hire on a commercial site can cost…

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Industrial Site Development in Metro Atlanta: Zoning, Stormwater & Permit Requirements for Warehouse and Flex Projects

Quick answer: Industrial site development in Metro Atlanta requires M-1 or M-2 zoning (or a rezoning application), a full stormwater management design meeting current Georgia Stormwater Management Manual (GSMM) requirements, a Georgia EPD NPDES Construction General Permit for any disturbance over one acre, and county-specific industrial performance standards covering truck circulation, buffers, and outdoor storage. Typical…

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2026 Metro Atlanta Land Disturbance Permit Cost & Timeline Guide (Every North Metro County)

Quick answer: In 2026, a land disturbance permit (LDP) in Metro Atlanta typically costs $1,500 to $7,500 in county fees plus $7,500 to $75,000 in engineering fees, and takes 45 to 120 days from submittal to permit issuance. Costs and timelines vary significantly by county, project size, and stormwater complexity. Georgia SB 447 now imposes a…

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Backyard Drainage Ditch Problems: How an Engineered Solution Gets Your Yard Back

If you are dealing with backyard drainage ditch problems, you are not alone. It is one of the most-searched homeowner drainage issues in Georgia, and for good reason. A neglected, undersized, or poorly graded drainage ditch quietly eats away at usable backyard space every time it rains. Sides slough off, the channel widens, vegetation dies, and…

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Pre-Sale Feasibility Engineering: How Alpharetta & Atlanta Property Sellers Maximize Sale Price and Close Faster

Quick Answer: Pre-sale feasibility engineering is a property study completed by a licensed civil engineer before a parcel is listed for sale. It documents what a buyer can actually build — including arborist findings, infiltration rates, impervious coverage limits, and site layout yield — so sellers price accurately, shorten the due-diligence window, and reduce the risk…

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