Temporary Bridge Crossing TBC-01 Dec-09 GMW

							                              INSTALLATION                          THE REMAINDER OF THE APPROACH         15. IF IT IS NOT PRACTICABLE TO        7. CHECK FOR EXCESSIVE EROSION ON
                                                                    RAMPS ONLY WHEN ADEQUATE              STABILISE THE ACCESS RAMPS AGAINST     THE APPROACH ROADS.
                              1. PRIOR TO COMMENCING ANY WORKS,     DRAINAGE AND SEDIMENT CONTROLS        EROSION, THEN INSTALL FLOW
                              OBTAIN ALL NECESSARY APPROVALS AND    ARE IN PLACE.                         DIVERSION BANKS ACROSS THE WIDTH       8. CHECK THE CONDITIONS OF ANY FLOW
                              PERMITS REQUIRED TO CONSTRUCT THE                                           OF EACH ACCESS RAMP ADJACENT THE       DIVERSION CHANNELS/BANKS AND THE
                              TEMPORARY WATERCOURSE CROSSING,       7. IF FLOW DIVERSION SYSTEMS CANNOT   TOP OF THE CHANNEL BANK, AND AT        OPERATING CONDITIONS OF ASSOCIATED
                              INCLUDING PERMITS FOR THE             BE INSTALLED, THEN CONDUCT BANK       REGULAR INTERVALS DOWN THE RAMPS       SEDIMENT TRAPS.
                              DISTURBANCE OF BANK VEGETATION,       EXCAVATIONS BY PULLING THE SOIL       (AS REQUIRED) TO PREVENT OR
                              AQUATIC VEGETATION (e.g. MANGROVES)   AWAY FROM THE CHANNEL.                MINIMISE SEDIMENT-LADEN RUNOFF         REMOVAL
                              AND ANY TEMPORARY INSTREAM FLOW                                             FLOWING DIRECTLY INTO THE
                              DIVERSION BARRIERS OR SEDIMENT        8. WHERE PRACTICABLE, CONSTRUCT       WATERCOURSE.                           1. TEMPORARY WATERCOURSE
                              CONTROL MEASURES.                     THE WATERCOURSE CROSSING                                                     CROSSINGS SHOULD BE REMOVED AS
                                                                    PERPENDICULAR TO THE CHANNEL.         16. STABILISE ALL DISTURBED AREAS      SOON AS POSSIBLE AFTER ALTERNATIVE
                              2. REFER TO APPROVED PLANS FOR                                              THAT ARE LIKELY TO BE SUBJECTED TO     ACCESS IS ACHIEVED OR THE BRIDGE IS
                              LOCATION AND CONSTRUCTION DETAILS.    9. WHERE PRACTICABLE, THE APPROACH    FLOWING WATER, INCLUDING BYPASS        NO LONGER NEEDED.
                              IF THERE ARE QUESTIONS OR PROBLEMS    RAMPS SHOULD BE STRAIGHT FOR AT       AND OVERFLOW AREAS, WITH ROCK OR
                              WITH THE LOCATION OR METHOD OF        LEAST 10m AND SHOULD BE ALIGNED       OTHER SUITABLE MATERIALS.              2. REMOVE ALL SPECIFIED MATERIALS
                              INSTALLATION, CONTACT THE ENGINEER    WITH THE CROSSING.                                                           AND DISPOSE OF IN A SUITABLE MANNER
                              OR RESPONSIBLE ON-SITE OFFICER FOR                                          MAINTENANCE                            THAT WILL NOT CAUSE AN EROSION OR
                              ASSISTANCE.                           10. WHERE PRACTICABLE, DIRECT                                                POLLUTION HAZARD.
                                                                    STORMWATER RUNOFF FROM THE            1. TEMPORARY WATERCOURSE
                              3. ENSURE THAT THE LOCATION OF THE    APPROACH RAMPS INTO STABLE DRAINS,    CROSSINGS SHOULD BE INSPECTED          3. RESTORE THE WATERCOURSE
                              CROSSING WILL NOT INTERFERE WITH      ADJACENT VEGETATION, OR               WEEKLY AND AFTER ANY SIGNIFICANT       CHANNEL TO ITS ORIGINAL
                              FUTURE CONSTRUCTION WORKS.            APPROPRIATE SEDIMENT TRAPS TO         CHANGE IN STREAM FLOW.                 CROSS-SECTION, AND SMOOTH AND
                                                                    MINIMISE THE RELEASE OF SEDIMENT                                             APPROPRIATELY STABILISE AND
                              4. PRIOR TO SIGNIFICANT LAND          INTO THE WATERCOURSE.                 2. DEBRIS TRAPPED ON OR UPSTREAM       REVEGETATE ALL DISTURBED AREAS.
                              CLEARING OR CONSTRUCTION OF THE                                             OF THE CROSSING SHOULD BE
                              APPROACH RAMPS AND BRIDGE             11. TAKE ALL REASONABLE MEASURES      REMOVED.
                              ABUTMENTS, ESTABLISH ALL NECESSARY    TO PREVENT DEBRIS AND
                              SEDIMENT CONTROL MEASURES AND         CONSTRUCTION MATERIAL FROM            3. REPAIR ANY DAMAGE CAUSED BY
                              FLOW DIVERSION WORKS (INSTREAM        ENTERING THE WATERCOURSE,             CONSTRUCTION TRAFFIC. IF TRAFFIC
                              AND OFF-STREAM AS REQUIRED),          ESPECIALLY ANY STILL OR FLOWING       HAS EXPOSED BARE SOIL, STABILISED AS
                              CLEARING ONLY THOSE AREAS             WATER.                                APPROPRIATE.
                              NECESSARY FOR INSTALLATION OF
                              THESE MEASURES.                       12. IF HIGHLY EROSIVE SOILS ARE       4. CHECK FOR EROSION OF ABUTMENTS,
                                                                    DETECTED, THEN APPROPRIATELY          CHANNEL SCOUR, OR ROCK
                              5. TO THE MAXIMUM DEGREE              STABILISE SUCH SOILS AS SOON AS       DISPLACEMENT.
                              PRACTICABLE, CONSTRUCTION             PRACTICABLE.
                              ACTIVITIES AND EQUIPMENT MUST NOT                                           5. MAKE ALL NECESSARY REPAIRS
                              OPERATE WITHIN OPEN FLOWING           13. APPROPRIATELY STABILISE ALL       IMMEDIATELY.
                              WATERS.                               DISTURBED WATERCOURSE BANKS.
Catchments & Creeks Pty Ltd




                                                                                                          6. CHECK THE BYPASS FLOODWAY
                              6. MAINTAIN CLEARING AND EXCAVATION   14. APPROPRIATELY STABILISE THE       MAKING SURE THE BANKS ARE STABLE.
                              OF THE WATERCOURSE BED AND BANKS      APPROACH ROADS INCLUDING THE
                              TO A MINIMUM. INITIALLY CLEAR ONLY    APPROACH RAMPS EACH SIDE OF THE                Drawn:     Date:
                              THE AREA NECESSARY TO ALLOW           BRIDGE CROSSING.
                              ACCESS FOR CONSTRUCTION. CLEAR                                                         GMW       Dec-09 Temporary Bridge Crossing TBC-01