| 2013-07-24 14:40:14 | COMMENTS |
| | |
| | PER YOUR REQUEST, HERE ARE MY COMMENTS ON THE DRAINAGE |
| | CALCULATIONS AND PLANS FOR SUBJECT PROJECT: |
| | 1. ELEVATIONS NEED TO BE SHOWN IN REFERENCE TO NGVD |
| | 1929 DATUM, NOT NAVD 1988. |
| | 2. AVOID PLANTING TREES NEAR THE STORM OUTFALL PIPE. |
| | THERE IS AN OAK TREE PROPOSED NEAR THE OUTFALL PIPE TO |
| | EVERNIA STREET. |
| | 3. AVOID THE WEEP HOLES OR OFF SET THEM FROM UNDER THE |
| | WEIRS SO THAT WATER DOES NOT FLOW UNDER THE WEIRS. |
| | 4. STRUCTURES S-2 AND S-3 ARE CALLED OUT AS TYPE C |
| | INLETS ON SHEET C5. WILL THESE BE CONSTRUCTED WITH |
| | FRAME AND GRATE AS SHOWN PER THE INLET DETAIL ON SHEET |
| | C7 OR AS A DITCH BOTTOM INLET (WITH GRATE ONLY) PER THE |
| | CONTROL STRUCTURE DETAIL SHOWN ON SHEET C8? (NOTE 5 |
| | MISSING FROM INLET DETAIL) |
| | 5. CAN WEIRS BE RAISED 6 INCHES (EXFILTRATION TRENCH |
| | REMAINS THE SAME) TO OBTAIN ADDITIONAL TRENCH STORAGE |
| | (0.14 AC-FT)? |
| | 6. SHOULD SKIMMER IN STRUCTURE S-4 EXTEND BELOW THE |
| | INVERT ELEVATION OF THE OUTFALL PIPE? |
| | 7. SUBMIT EXFILTRATION TEST RESULTS. |
| | |
| | TRACY L. WARD, P.E. |
| | SENIOR STORMWATER ENGINEER |
| | CITY OF WEST PALM BEACH |
| | ENGINEERING AND PUBLIC WORKS DEPARTMENT |
| | 401 CLEMATIS ST., 4TH FLOOR |
| | WEST PALM BEACH, FL 33401 |
| | PHONE: 561-494-1120 |
| | FAX: 561-494-1116 |
| | CELL 561-351-0510 |
| | [email protected] |
| | |
| | PROJECT REQUIRES RESTORATION BOND. THIS WILL LET PERMIT |
| | COMPLY WITH ORDINANCE 4060-07 |
| | |
| | HTTP://WPB.ORG/ENGINEERING/FORMS-AND-PUBLICATIONS/ |
| | HTTP://WPB.ORG/WP-CONTENT/UPLOADS/SITES/7/2012/05/2009- |
| | 06-16-14-38-16-PERFORMANCEBOND-IMPROVEMENTS.PDF |
| | |
| | PROJECT WILL NEED TO SUPPLY A POLLUTION PREVENTION PLAN |
| | / SURVEY. |
| | |
| | STORM WATER POLLUTION PREVENTION PLAN (SWPPP) PROVISOS |
| | 1. THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) IS |
| | COMPRISED OF AN EROSION AND |
| | SEDIMENTATION CONTROL PLAN, THE EROSION AND |
| | SEDIMENTATION CONTROL DETAILS, AND ALL |
| | SUBSEQUENT REPORTS AND RELATED DOCUMENTS PROVIDED AND |
| | UPDATED BY THE CONTRACTOR. |
| | 2. ALL CONTRACTORS AND SUBCONTRACTORS INVOLVED WITH |
| | STORM WATER POLLUTION |
| | PREVENTION |
| | SHALL OBTAIN A COPY OF THE SWPPP AND THE STATE OF |
| | FLORIDA NATIONAL POLLUTANT DISCHARGE |
| | ELIMINATION SYSTEM GENERAL PERMIT (NPDES PERMIT) AND |
| | BECOME FAMILIAR WITH THEIR |
| | CONTENTS. |
| | 3. THE CONTRACTOR SHALL IMPLEMENT BEST MANAGEMENT |
| | PRACTICES (BMP'S) AS REQUIRED BY THE |
| | SWPPP. ADDITIONAL BEST MANAGEMENT PRACTICES SHALL BE |
| | IMPLEMENTED AS DICTATED BY |
| | CONDITIONS AT NO ADDITIONAL COST TO THE OWNER |
| | THROUGHOUT ALL PHASES OF CONSTRUCTION. |
| | 4. BEST MANAGEMENT PRACTICES AND CONTROLS SHALL CONFORM |
| | TO FEDERAL, STATE, OR LOCAL |
| | REQUIREMENTS OR MANUAL OF PRACTICE, AS APPLICABLE. THE |
| | CONTRACTOR SHALL IMPLEMENT |
| | ADDITIONAL CONTROLS AS DIRECTED BY THE PERMITTING |
| | AGENCY OR THE OWNER. |
| | 5. EROSION CONTROL PLAN MUST CLEARLY DELINEATE ALL |
| | STATE WATERS. PERMITS FOR ANY |
| | CONSTRUCTION ACTIVITY IMPACTING STATE WATERS OR |
| | REGULATED WETLANDS MUST BE |
| | MAINTAINED |
| | ON SITE AT ALL TIMES. |
| | 6. THE CONTRACTOR SHALL MINIMIZE CLEARING TO THE |
| | MAXIMUM EXTENT PRACTICAL OR AS |
| | REQUIRED BY THE GENERAL PERMIT, IF ONE HAS BEEN ISSUED. |
| | 7. CONTRACTOR SHALL DENOTE ON PLAN THE TEMPORARY |
| | PARKING AND STORAGE AREA WHICH SHALL |
| | ALSO BE USED AS THE EQUIPMENT MAINTENANCE AND CLEANING |
| | AREA, EMPLOYEE PARKING AREA, |
| | AND AREA FOR LOCATING PORTABLE FACILITIES, OFFICE |
| | TRAILERS, AND TOILET FACILITIES. |
| | 8. ALL WASH WATER (CONCRETE TRUCKS, VEHICLE CLEANING, |
| | EQUIPMENT CLEANING, ETC.) SHALL BE |
| | DETAINED AND PROPERLY TREATED OR DISPOSED. |
| | 9. SUFFICIENT OIL AND GREASE ABSORBING MATERIALS AND |
| | FLOTATION BOOMS SHALL BE |
| | MAINTAINED |
| | ON SITE OR READILY AVAILABLE TO CONTAIN AND CLEAN?UP |
| | FUEL OR CHEMICAL SPILLS AND LEAKS. |
| | 10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE CONTROL |
| | OF DUST AND DIRT RISING AND |
| | SCATTERING IN THE AIR DURING CONSTRUCTION AND SHALL |
| | PROVIDE WATER SPRINKLING OR OTHER |
| | SUITABLE METHODS OF CONTROL. THE USE OF MOTOR OILS AND |
| | OTHER PETROLEUM BASED OR TOXIC |
| | LIQUIDS FOR DUST SUPPRESSION OPERATIONS IS PROHIBITED. |
| | THE CONTRACTOR SHALL COMPLY |
| | WITH ALL GOVERNING REGULATIONS PERTAINING TO |
| | ENVIRONMENTAL PROTECTION. |
| | 11. RUBBISH, TRASH, GARBAGE, LITTER, OR OTHER SUCH |
| | MATERIALS SHALL BE DEPOSITED INTO SEALED |
| | CONTAINERS. MATERIALS SHALL BE PREVENTED FROM LEAVING |
| | THE PREMISES THROUGH THE ACTION |
| | OF WIND OR STORM WATER DISCHARGE INTO DRAINAGE DITCHES |
| | OR WATERS OF THE STATE. |
| | 12. ALL STORM WATER POLLUTION PREVENTION MEASURES |
| | PRESENTED ON THE PLAN, SHALL BE |
| | INITIATED |
| | AS SOON AS PRACTICABLE. |
| | 13. THE CONTRACTOR SHALL INSTALL INLET PROTECTION ON |
| | ALL EXISTING AND PROPOSED DRAINAGE |
| | STRUCTURES FOR THE DURATION OF CONSTRUCTION AND UNTIL |
| | ACCEPTANCE OF THE PROJECT BY |
| | THE OWNER. ALL DRAINAGE STRUCTURES AND PIPES WITHIN THE |
| | LIMITS OF CONSTRUCTION SHALL BE |
| | CLEANED OF DEBRIS AS REQUIRED DURING AND AT THE END OF |
| | CONSTRUCTION TO PROVIDE POSITIVE |
| | DRAINAGE FLOWS. |
| | 14. STABILIZATION PRACTICES SHOULD BE INITIATED AS SOON |
| | AS PRACTICAL. |
| | 15. DISTURBED PORTIONS OF THE SITE WHERE CONSTRUCTION |
| | ACTIVITY HAS PERMANENTLY STOPPED |
| | SHALL BE PERMANENTLY STABILIZED. THESE AREAS SHALL BE |
| | STABILIZED NO LATER THAN 7 DAYS |
| | AFTER THE LAST CONSTRUCTION ACTIVITY OCCURRED. |
| | 16. IF A GRAVEL CONSTRUCTION ENTRANCE IS NOT USED OR |
| | THE ACTION OF VEHICLES TRAVELING |
| | OVER THE GRAVEL CONSTRUCTION ENTRANCE IS NOT SUFFICIENT |
| | TO REMOVE THE MAJORITY OF DIRT |
| | OR MUD, THEN THE TIRES MUST BE WASHED BEFORE THE |
| | VEHICLES ENTER A PUBLIC ROAD. IF |
| | WASHING IS USED, PROVISIONS MUST BE MADE TO INTERCEPT |
| | THE WASH WATER AND TRAP THE |
| | SEDIMENT BEFORE IT IS CARRIED OFF THE SITE. |
| | 17. ALL MATERIALS SPILLED, DROPPED, WASHED, OR TRACKED |
| | FROM VEHICLES ONTO ROADWAYS OR |
| | INTO STORM DRAINS MUST BE REMOVED AS SOON AS POSSIBLE. |
| | 18. THE CONTRACTOR SHALL BE RESPONSIBLE FOR REMOVING |
| | ANY SEDIMENT THAT MAY HAVE |
| | COLLECTED IN THE STORM SEWER DRAINAGE SYSTEMS IN |
| | CONJUNCTION WITH THE DEMOLITION, |
| | CONSTRUCTION, OR STABILIZATION OF THE SITE. |
| | 19. ON?SITE & OFF?SITE SOIL STOCKPILE AND BORROW AREAS |
| | SHALL BE PROTECTED FROM EROSION |
| | AND |
| | SEDIMENTATION THROUGH IMPLEMENTATION OF BEST MANAGEMENT |
| | PRACTICES. STOCKPILE AND |
| | BORROW AREA LOCATIONS SHALL BE NOTED ON THE EROSION |
| | CONTROL PLAN AND PERMITTED IN |
| | ACCORDANCE WITH GENERAL PERMIT REQUIREMENTS. |
| | 20. SLOPES SHALL BE LEFT IN A ROUGHENED CONDITION |
| | DURING THE GRADING PHASE TO REDUCE |
| | RUNOFF VELOCITIES AND EROSION. |
| | 21. DUE TO GRADE CHANGES DURING THE DEVELOPMENT OF THE |
| | PROJECT, THE CONTRACTOR SHALL |
| | BE |
| | RESPONSIBLE FOR ADJUSTING THE EROSION CONTROL MEASURES |
| | (SILT FENCES, ETC.) TO PREVENT |
| | EROSION. |
| | 22. ALL CONSTRUCTION SHALL BE STABILIZED AT THE END OF |
| | EACH WORKING DAY, THIS INCLUDES |
| | BACK |
| | FILLING OF TRENCHES FOR UTILITY DEMOLITION OR |
| | CONSTRUCTION AND PLACEMENT OF GRAVEL OR |
| | BITUMINOUS PAVING FOR ROAD CONSTRUCTION. |
| | 23. EROSION AND SEDIMENTATION CONTROL PLANS PROVIDED |
| | HEREIN ARE A GUIDELINE ONLY. THE |
| | CONTRACTOR IS RESPONSIBLE FOR PREPARING THE FINAL |
| | POLLUTION PREVENTION PLAN. THE PLAN |
| | SHALL BE SUBMITTED TO THE OWNER WHICH DEMONSTRATES THE |
| | MECHANISMS AND PRACTICES |
| | THAT WILL BE EMPLOYED TO PROTECT THE CONSTRUCTION SITE |
| | AND SURROUNDING AREA DURING |
| | CONSTRUCTION. THE PLAN SHALL BE CONSISTENT WITH FEDERAL |
| | NATIONAL POLLUTANT DISCHARGE |
| | ELIMINATION SYSTEM (NPDES PERMIT REQUIREMENTS |
| | PERTAINING TO POLLUTION PREVENTION |
| | PLANS. |
| | THE PLAN SHALL INCLUDE, BUT NOT BE LIMITED TO, THE |
| | LOCATIONS OF SILT BARRIERS, EMERGENCY |
| | RESPONSE PRACTICES, AND OTHER METHODS TO PREVENT |
| | POLLUTION. REFUELING OR STORAGE OF |
| | VEHICLES OR EQUIPMENT THAT UTILIZE PETROLEUM BASED |
| | PRODUCTS SHALL BE PROHIBITED |
| | ANYWHERE WITHIN 50 FEET OF A WATER'S EDGE. THE PLAN |
| | SHALL BE FILED WITH ALL APPLICABLE |
| | REGULATORY AGENCIES BY THE CONTRACTOR. REFER TO FURTHER |
| | NOTES AND DETAILS WITHIN |
| | THESE DOCUMENTS. |
| | 24. SILT FENCE IS REQUIRED AS SHOWN ON THE PLANS AND |
| | ANYWHERE ADDITIONAL AT THE |
| | CONTRACTOR'S DISCRETION. SILT FENCE IS NOT APPLICABLE |
| | IN PAVEMENT AREAS. LIMITS OF |
| | CONSTRUCTION SHOWN ARE DIAGRAMATIC. CONTRACTOR TO |
| | PROVIDE PLAN FOR SHOP DRAWING |
| | REVIEW. |
| | DEMOLITION NOTES |
| | 1. BROKEN PAVEMENT OR OTHER DEBRIS SHALL BE REMOVED |
| | FROM THE SITE AS SOON AS PRACTICAL. |
| | EXCAVATED MATERIALS SHALL NOT BE STOCKPILED IN THE |
| | RIGHT?OF?WAY OR EASEMENT DURING |
| | CONSTRUCTION. |
| | 2. VEGETATION, MUCK, AND ANY DELETERIOUS MATERIAL |
| | WITHIN THE RIGHT?OF?WAY LIMITS OF ALL |
| | STREETS MUST BE REMOVED AND REPLACED WITH CLEAN FILL |
| | MATERIAL, FREE OF STUMPS, LARGE |
| | ROOTS, OR OTHER MATTER NOT SUITABLE FOR INCLUSION IN |
| | ROADWAY FILL. |
| | 3. AFTER REMOVAL OF UNDERGROUND PIPES, THE TRENCHES |
| | SHALL BE BACKFILLED. BACKFILL |
| | MATERIAL SHALL BE PLACED IN LAYERS NOT TO EXCEED TWELVE |
| | (12) INCHES IN THICKNESS, WITH |
| | EACH LAYER CAREFULLY COMPACTED TO NINETY?EIGHT PERCENT |
| | (98%) OF MAXIMUM DENSITY, PER |
| | AASTHO T?180 AND TESTED, BEFORE PLACING SUCCEEDING |
| | LAYERS. DENSITY TESTS SHALL BE TAKEN |
| | AT MAXIMUM TWO?HUNDRED FOOT (200') INTERVALS, STAGGERED |
| | EACH SIDE OF THE TRENCH. AT A |
| | MINIMUM, BACKFILLING AND COMPACTION SHALL BE PER FDOT, |
| | CITY OF WEST PALM BEACH, AND/OR |
| | AASHTO STANDARDS. |
| | 4. CONTRACTOR SHALL STORE AND PROTECT ANY ITEMS NOTED |
| | TO BE RELOCATED. ANY DAMAGED |
| | ITEMS SHALL BE REPLACED AT THE EXPENSE OF THE |
| | CONTRACTOR. |
| | 5. THE OWNER MAY DESIGNATE ADDITIONAL ITEMS TO BE |
| | SALVAGED AND PROVIDED TO THE OWNER. |
| | 6. REFER TO THE DEMOLITION PLAN FOR ADDITIONAL DETAILS |
| | OF EXISTING STRUCTURES, ETC., |
| | LOCATED WITHIN THE PROJECT SITE. UNLESS OTHERWISE |
| | NOTED, ALL EXISTING BUILDINGS, |
| | STRUCTURES, SLABS, CONCRETE, ASPHALT, DEBRIS PILES, |
| | SIGNS, AND ALL APPURTENANCES ARE TO |
| | BE REMOVED FROM THE SITE BY THE CONTRACTOR AND PROPERLY |
| | DISPOSED OF IN A LEGAL MANNER. |
| | 7. THE CONTRACTOR SHALL REFER TO THE DEMOLITION PLAN |
| | FOR DEMOLITION/PRESERVATION OF |
| | EXISTING TREES. ALL TREES NOT SPECIFICALLY SHOWN TO BE |
| | REMOVED OR RELOCATED SHALL BE |
| | PRESERVED . TREE PROTECTION FENCING SHALL BE INSTALLED |
| | PRIOR |
| | TO ANY DEMOLITION. ALL TRESS TO BE SAVED UNLESS |
| | OTHERWISE NOTED. |
| | 8. CONTRACTOR TO NOTE EXISTING TREES TO REMAIN. SHOULD |
| | ANY TREE TO BE REMAIN BE DAMAGED |
| | BY THE CONTRACTOR, IT WILL REQUIRE REPLACEMENT IN KIND. |
| | MAINTENANCE |
| | 1. ALL MEASURES STATED ON THE EROSION AND SEDIMENTATION |
| | CONTROL PLAN, AND IN THE STORM |
| | WATER POLLUTION PREVENTION PLAN, SHALL BE MAINTAINED IN |
| | FULLY FUNCTIONAL CONDITION |
| | UNTIL NO LONGER REQUIRED FOR A COMPLETED PHASE OF WORK |
| | OR FINAL STABILIZATION OF THE |
| | SITE. ALL EROSION AND SEDIMENTATION CONTROL MEASURES |
| | SHALL BE CHECKED BY A QUALIFIED |
| | PERSON AT LEAST ONCE EVERY SEVEN CALENDAR DAYS AND |
| | WITHIN 24 HOURS OF THE END OF A |
| | 0.5 INCH RAINFALL EVENT, AND CLEANED AND REPAIRED IN |
| | ACCORDANCE WITH THE FOLLOWING: |
| | 2. INLET PROTECTION DEVICES AND BARRIERS SHALL BE |
| | REPAIRED OR REPLACED IF THEY SHOW SIGNS |
| | OF UNDERMINING, OR DETERIORATION. |
| | 3. ALL SEEDED AREAS SHALL BE CHECKED REGULARLY TO SEE |
| | THAT A GOOD STAND IS MAINTAINED. |
| | AREAS SHOULD BE FERTILIZED, WATERED AND RESEEDED AS |
| | NEEDED. |
| | 4. SILT FENCES SHALL BE REPAIRED TO THEIR ORIGINAL |
| | CONDITIONS IF DAMAGED. SEDIMENT SHALL BE |
| | REMOVED FROM THE SILT FENCES WHEN IT REACHES ONE?HALF |
| | THE HEIGHT OF THE SILT FENCE. |
| | 5. THE CONSTRUCTION ENTRANCE SHALL BE MAINTAINED IN A |
| | CONDITION WHICH WILL PREVENT |
| | TRACKING OR FLOW OF MUD ONTO PUBLIC RIGHTS?OF?WAY. THIS |
| | MAY REQUIRE PERIODIC TOP |
| | DRESSING OF THE CONSTRUCTION ENTRANCE AS CONDITIONS |
| | DEMAND. |
| | 6. THE TEMPORARY PARKING AND STORAGE AREA SHALL BE KEPT |
| | IN GOOD CONDITION (SUITABLE FOR |
| | PARKING AND STORAGE). THIS MAY REQUIRE PERIODIC TOP |
| | DRESSING OF THE TEMPORARY |
| | PARKING AS CONDITIONS DEMAND. |
| | 7. ALL CONSTRUCTION SHALL BE DONE IN A SAFE MANNER, |
| | SPECIFICALLY, THE RULES AND |
| | REGULATIONS OF THE OCCUPATIONAL SAFETY AND HEALTH |
| | ADMINISTRATION (OSHA), THE FLORIDA |
| | DEPARTMENT OF TRANSPORTATION (FDOT), THE MANUAL OF |
| | UNIFORM TRAFFIC CONTROL DEVICES |
| | (MUTCD), SHALL BE STRICTLY OBSERVED. |
| | 8. CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR |
| | COMPLIANCE WITH THE STATE OF FLORIDA |
| | TRENCH SAFETY ACT. |
| | HTTP://WPB.ORG/WP?CONTENT/UPLOADS/SITES/7/2012/05/2011? |
| | 12?21?15?00?29?SWPPPGUIDE.PDF |
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