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            "text": "NOAA 24-hr D 2 YR-F Rainfall=4.04\"\nPrinted 10/24/2025\ns LLC Page 118",
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            "text": "Analysis - Proposed Conditions\nPrepared by Civil Core Consulting\nHydroCAD® 10.20-7a s/n 13637 © 2025 HydroCAD Software Solutions LLC",
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            "text": "Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A",
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            "text": "Chamber Model = ADS N-12 15\" (ADS N-12® Pipe)\nInside= 14.8\"W x 14.8\"H => 1.20 sf x 20.00'L = 24.0 cf\nOutside= 18.0\"W x 18.0\"H => 1.60 sf x 20.00'L = 31.9 cf\nRow Length Adjustment= +1.00' x 1.20 sf x 3 rows\n\n18.0\" Wide + 10.9\" Spacing = 28.9\" C-C Row Spacing\n\n2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0\" End Stone x 2 = 45.33' Base Length\n3 Rows x 18.0\" Wide + 10.9\" Spacing x 2 + 8.0\" Side Stone x 2 = 7.65' Base Width\n4.0\" Stone Base + 18.0\" Chamber Height + 4.0\" Stone Cover = 2.17' Field Height\n\n6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage\n6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement\n\n751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage\n\nChamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17'\n\n6 Chambers\n27.8 cy Field\n19.8 cy Stone",
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