SWA000229_Construction Sequence_20231228

EROSION CONTROL SEQUENCE - STAGE 1
1. PRIOR TO BEGINNING ANY CONSTRUCTION.THE CONTRACTOR SHALL OBTAIN AND READ ALL
PERMITS/APPROVALS NECESSARY TO COMPLETE THE CONSTRUCTION,INCLUDING BUT NOT
LIMITED TO SITE PLAN APPROVAL,LAND DISTURBANCE PERMIT,NPDES PERMIT,
CONSTRUCTION DRAWINGS APPROVAL,NCDOT DRIVEWAY PERMIT,NCDOT ENCROACHMENT
AGREEMENTS,WATER PERMIT,SEWER PERMIT,ETC. CONTRACTOR TO RETAIN COPIES OF ALL
PERMIT DOCUMENTS AND APPROVED PLANS ON THE JOBSITE THROUGHOUT CONSTRUCTION.
READ AND COMPLY WITH ALL CONDITIONS OF ALL PERMITS. PERMIT DOCUMENTS SHALL BE
CONSIDERED A PART OF THESE CONSTRUCTION DRAWINGS.
2. PRIOR TO BEGINNING ANY CONSTRUCTION,CONTRACTOR TO HOLD ONSITE
PRECONSTRUCTION CONFERENCE WITH EROSION CONTROL INSPECTOR,CITY/TOWN/COUNTY
INSPECTORS,NCDOT INSPECTOR AND OWNER/DEVELOPER AS REQUIRED.
3. INSTALL TEMPORARY SILT FENCE,AND HAVE IT INSPECTED BY THE NCDEQ INSPECTOR IF
REQUIRED.
4. INSTALL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT AND TEMPORARY DRIVEWAY
PIPE(IF ANY).
5. CLEAR ONLY THE MINIMUM NEEDED TO INSTALL THE STAGE 1 EROSION CONTROL MEASURES.
INSTALL ALL EROSION CONTROL MEASURES SHOWN ON THE STAGE 1 EROSION CONTROL PLAN
INCLUDING TEMPORARY SILT FENCE.STONE OUTLETS,DIVERSION BERMS/DITCHES,
RISER/SKIMMER BASIN,ETC. PROMPTLY INSTALL DITCH LINERS,SPILLWAY LINER,AND SEED
BASIN BERM,BASIN SLOPES,AND ALL DITCHES.
6. THE RISER/SKIMMER BASIN BERM SHALL BE ACCURATELY GRADED TO FUNCTION FOR THE
PERMANENT WET DETENTION POND.INCLUDING THE CUTOFF TRENCH AND ANTI-SEEP COLLAR.
THE RISER AND 0-RING GASKETTED RCP OUTLET PIPE SHALL BE ACCURATELY CONSTRUCTED
AS PERMANENT STRUCTURES. REFER TO THE SCM PLAN/DETAILS SHEET FOR ADDITIONAL
INFORMATION. THE PROJECT GEOTECHNICAL ENGINEER SHALL OVERSEE THE CONSTRUCTION
OF THESE FEATURES AT THE TIME OF INITIAL SKIMMER BASIN CONSTRUCTION.
7. CONTACT EROSION CONTROL INSPECTOR TO REQUEST ONSITE INSPECTION OF STAGE 1
EROSION CONTROL MEASURES AND OBTAIN APPROVAL.
8. IT IS THE CONTRACTOR'S RESPONSIBILITY TO INSPECT ALL EROSION CONTROL MEASURES
AFTER EACH RAINFALL EVENT.AND MAKE IMMEDIATE REPAIRS AS NEEDED. ALL SEDIMENT
SHALL BE RETAINED ON THE JOBSITE THROUGHOUT CONSTRUCTION. ALL ADJACENT STREETS
AND SIDEWALKS SHALL BE KEPT BROOM CLEAN.
9. REFER TO THE NPDES PERMIT,WHICH REQUIRES THE CONTRACTOR TO PERFORM
SELF-INSPECTIONS,KEEP AN ONSITE RAIN GAUGE,AND KEEP ONSITE INSPECTION RECORDS.
10. PROCEED TO THE STAGE 2 EROSION CONTROL SEQUENCE.

EROSION CONTROL SEQUENCE-STAGE 2
1. DO NOT BEGIN STAGE 2 UNTIL ALL STAGE 1 MEASURES ARE IN PLACE.
CONTRACTOR TO INSPECT AND REFURBISH ALL STAGE 1 EROSION CONTROL
MEASURES AS NEEDED.
2. IT IS THE CONTRACTOR S RESPONSIBILITY TO INSPECT ALL EROSION
CONTROL MEASURES AFTER EACH RAINFALL EVENT.AND MAKE IMMEDIATE
REPAIRS AS NEEDED. ALL SEDIMENT SHALL BE RETAINED ON THE JOBSITE
THROUGHOUT CONSTRUCTION. ALL ADJACENT STREETS AND SIDEWALKS
SHALL BE KEPT BROOM CLEAN.
3. REFER TO THE NPDES PERMIT,WHICH REQUIRES THE CONTRACTOR TO
PERFORM SELF-INSPECTIONS.KEEP AN ONSITE RAIN GAUGE.AND KEEP
ONSITE INSPECTION RECORDS.
4. PERFORM DEMOLITION,THEN CLEAR AND GRUB THE SITE UP TO THE
DISTURBANCE LIMITS SHOWN ON THE PLAN.
5. BEGIN SITE GRADING. PROVIDE TEMPORARY SEEDING IN ACCORDANCE WITH
THE STABILIZATION TIME FRAMES SHOWN ON THE NPDES DETAILS.
6. INSTALL STORM PIPE SYSTEM AND TEMPORARY INLET PROTECTION. GRADE
ALL PERMANENT SWALES'DITCHES,AND INSTALL DITCH LINERS. INSTALL
PROPOSED UTILITIES.
7. ALL GRADING,COMPACTION.POND'BERM CONSTRUCTION, BUILDING PADS
AND PROOFROLL SHALL BE OBSERVED BY THE PROJECT GEOTECHNICAL
ENGINEER. SUBMIT GEOTECHNICAL CERTIFICATION OF POND BERM
CONSTRUCTION TO OWNERCIVIL ENGINEER.
8. AFTER GRADING IS COMPLETE,THEN ESTABLISH PERMANENT GROUND
COVER ON ALL DISTURBED AREAS,INCLUDING PAVING,
LANDSCAPING,MULCH.AND ESTABLISH A DENSE STAND OF GRASS. ANY
BARE SPOTS.EROSIVE RILLS OR EROSIVE SLOPES SHALL BE PERMANENTLY
STABILIZED WITH AN EROSION CONTOL BLANKET AND GRASS(SEED,
HYDROSEED OR SOD AS NEEDED). THE CONTRACTOR SHALL WATER ALL
VEGETATION AS NEEDED FOR HEALTHY PLANTS AND GRASS UNTIL
CONSTRUCTION IS COMPLETE AND APPROVED BY MUNICIPALITIES.
9. AFTER ALL AREAS ARE STABILIZED AND A DENSE STAND OF GRASS IS
ESTABILSHED.THEN CONTACT EROSION CONTROL INSPECTOR FOR ONSITE
INSPECTION. OBTAIN APPROVAL AND REQUEST PERMISSION TO CONVERT
THE TEMPORARY SKIMMER BASIN INTO A PERMANENT WET DETENTION
POND.
10. FOLLOWING APPROVAL,THEN REMOVE ALL REMAINING TEMPORARY
EROSION CONTROL MEASURES(SILT FENCE,INLET PROTECTION.
TEMPORARY DIVERSION DITCHES ETC.). REFER TO BASIN.POND CONVERSION
SEQUENCE ON SHEET C4.03.
11. HOLD FINAL ONSITE INSPECTION WITH EROSION CONTROL INSPECTOR AND
OBTAIN FINAL APPROVAL.