| Date |
Text |
| 2012-05-30 08:10:26 | STORMWATER COMMENTS: PLEASE RESPOND IN WRITING. |
| | |
| | I REVIEWED THE DRAINAGE CALCULATIONS AND DESIGN PLANS |
| | FOR THE SUBJECT PROJECT AND OFFER THESE COMMENTS: |
| | 1. DRAINAGE CALCULATIONS DO NOT LIST THE EXISTING LAND |
| | USES (PAVEMENT, LAKE, PERVIOUS, ETC.). A PORTION OF THE |
| | LAKE IS BEING FILLED BUT THE POST-DEVELOPMENT PEAK |
| | STAGES AND PEAK DISCHARGE RATES ARE LESS THAN THE |
| | REPORTED EXISTING PEAK STAGES AND PEAK DISCHARGE RATES. |
| | 2. IN THE CASCADE MODEL, GROUND STORAGE IS LISTED AS |
| | 3.75 INCHES COMPARED TO THE CALCULATED SOIL STORAGE OF |
| | 3.55 INCHES. CORRECTING THIS IN THE CASCADE MODEL WILL |
| | HAVE A NEGLIGIBLE IMPACT ON THE RESULTS. |
| | 3. MATCH LINES ON SHEETS PD-3 AND PD-4 MISLABELED. |
| | 4. WHAT IS THE PURPOSE OF THE ROCK TRENCH? THE PIPE |
| | INVERT ELEVATIONS FOR THE 15" PHDPE ARE BELOW THE |
| | CONTROL ELEVATION OF THE LAKE CONTROL STRUCTURE. THESE |
| | PIPES WILL BE NEARLY HALF FULL OF WATER MOST OF THE |
| | TIME. |
| | 5. THE PROPOSED LAKE BANK AT THE NORTHWEST CORNER OF |
| | THE SOCCER/LACROSSE/FOOTBALL FIELD APPEARS TO HAVE A |
| | SLOPE OF 3:1 (TOP OF BANK ELEVATION = 17.60 FT NGVD; |
| | WATER ELEVATION = 14.39 FT NGVD; HORIZONTAL DISTANCE = |
| | 10'+/-). |
| | 6. THERE DOESN'T APPEAR TO BE A PERIMETER BERM AT |
| | ELEVATION 18.5 FT NGVD ALONG THE WEST AND SOUTH |
| | BOUNDARIES. |
| | 7. A FEW OF THE NOTES ON SHEET PD-5 REFERENCE VILLAGE |
| | OF WELLINGTON. |
| | |
| | TRACY L. WARD, P.E. |
| | SENIOR STORMWATER ENGINEER |
| | CITY OF WEST PALM BEACH |
| | ENGINEERING SERVICES DIVISION |
| | 401 CLEMATIS ST., 4TH FLOOR |
| | WEST PALM BEACH, FL 33401 |
| | PHONE: 561-494-1120 |
| | FAX: 561-494-1116 |
| |
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