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    "page": 76,
    "width_pt": 720,
    "height_pt": 540,
    "rotation": 0,
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    "item_count": 15,
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        "list_item": 13,
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            "id": "p76.1",
            "order": 1,
            "type": "title",
            "bbox": {
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            "text": "Likely infra-sound at Various Distances",
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            "level": 2
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            "id": "p76.2",
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            "bbox": {
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                "t": 381.4075,
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            "text": "",
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                    "id": "p76.2.1",
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                    "text": "Sound below 20 Hz (infrasound) receives little attenuation traveling through air, barriers or any other means that may be used to reduce audible noise",
                    "marker": "•"
                },
                {
                    "id": "p76.2.2",
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                    "text": "78 dB at 0.5 mile (from previous chart gas turbine)",
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                {
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                    "bbox": {
                        "l": 90.24,
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                    "text": "Decreases approximately 6 dB for every 2x distance",
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                {
                    "id": "p76.2.4",
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                    "bbox": {
                        "l": 125.04,
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                    "text": "At 1 mile from source – 72 dB",
                    "marker": "•"
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                {
                    "id": "p76.2.5",
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                    "bbox": {
                        "l": 125.28,
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                        "b": 252.63549999999998
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                    "text": "At 2 miles from source – 66 dB",
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                {
                    "id": "p76.2.6",
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                    "bbox": {
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                        "r": 327.6,
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                    "text": "At 4 miles from source – 60 dB",
                    "marker": "•"
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                {
                    "id": "p76.2.7",
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                    "text": "85 dB at 0.25 mile (Siemens SGT-800 45 MW gas turbine with “best available” damping)",
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                {
                    "id": "p76.2.8",
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                    "bbox": {
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                        "r": 460.8,
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                    "text": "Decreases approximately 6 dB for every 2x distance",
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                {
                    "id": "p76.2.9",
                    "order": 11,
                    "type": "list_item",
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                        "l": 125.04,
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                        "r": 332.16,
                        "b": 162.15550000000002
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                    "text": "At 0.5 mile from source – 79 dB",
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                },
                {
                    "id": "p76.2.10",
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                    "bbox": {
                        "l": 125.28,
                        "t": 164.0059,
                        "r": 328.08,
                        "b": 146.3155
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                    "text": "At 1 miles from source – 73 dB",
                    "marker": "•"
                },
                {
                    "id": "p76.2.11",
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                    "bbox": {
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                        "t": 148.04590000000002,
                        "r": 327.36,
                        "b": 130.3555
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                    "text": "At 2 miles from source – 66 dB",
                    "marker": "•"
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                {
                    "id": "p76.2.12",
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                    "type": "list_item",
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                        "l": 125.52,
                        "t": 132.08589999999998,
                        "r": 327.36,
                        "b": 114.39550000000003
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                    "text": "At 4 miles from source – 60 dB",
                    "marker": "•"
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                {
                    "id": "p76.2.13",
                    "order": 15,
                    "type": "list_item",
                    "bbox": {
                        "l": 79.92,
                        "t": 114.24,
                        "r": 588.72,
                        "b": 103.2
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                    "text": "Undamped sound from SGT-800 gas turbine 45 MW electric generator is 130-150 dB, Siemens data indicates damping to 85 dB is possible.",
                    "marker": "*"
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        }
    ],
    "excluded_furniture": {
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        "last": []
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}