SWA000147_Construction Sequence_20220518

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VICINITY MAP - N.T.S.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect
(during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
available, record the cumulative rain measurement for those un-
attended days (and this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero." The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Indication of whether the measures were operating
event > 1.0 inch in
properly,
24 hours
S. Description of maintenance needs for the measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDOs)
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Evidence of indicators of stormwater pollution such as oil
event > 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
S. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event > 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(S) Streams or
At least once per
If the stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidity from the construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actions taken, and
accessible)
event > 1.0 inch in
2. Records of the required reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit.
(6) Ground
After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization
of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
EROSION CONTROL/GROUND STABILIZATION NOTES:
1. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF
A SITE WHERE LAND -DISTURBING ACTIVITIES HAVE
TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO
THE FOLLOWING SCHEDULE:
1A. ALL PERIMETER DIKES, SWALES, PERIMETER SLOPES
AND ALL SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL
(3:1) SHALL BE PROVIDED TEMPORARY OR PERMANENT
STABILIZATION WITH GROUND COVER AS SOON AS
PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS
FROM THE LAST LAND -DISTURBING ACTIVITY.
1 B. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED
TEMPORARY OR PERMANENT STABILIZATION WITH GROUND
COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 14
CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY.
2. CONDITIONS - IN MEETING THE STABILIZATION
REQUIREMENTS ABOVE, THE FOLLOWING CONDITIONS OR
EXEMPTIONS SHALL APPLY:
2A. EXTENSIONS OF TIME MAY BE APPROVED BY THE
PERMITTING AUTHORITY BASED ON WEATHER OR OTHER
SITE -SPECIFIC CONDITIONS THAT MAKE COMPLIANCE
IMPRACTICABLE.
2B. ALL SLOPES 50' IN LENGTH OR GREATER SHALL APPLY
THE GROUND COVER WITHIN 7 DAYS EXCEPT WHEN THE SLOPE
IS FLATTER THAN 4:1. SLOPES LESS THAN 50' SHALL APPLY
GROUND COVER WITHIN 14 DAYS EXCEPT WHEN SLOPES ARE
STEEPER THAN 3:1, THE 7 DAY REQUIREMENT APPLIES.
2C. ANY SLOPED AREA FLATTER THAN 4:1 SHALL BE
EXEMPT FROM THE 7 DAY GROUND COVER REQUIREMENT.
2D. SLOPES 10' OR LESS IN LENGTH SHALL BE EXEMPT
FROM THE 7 DAY GROUND COVER REQUIREMENT EXCEPT
WHEN THE SLOPE IS STEEPER THAN 2:1.
2E. FOR PORTIONS OF PROJECTS WITHIN THE SEDIMENT
CONTROL COMMISSION -DEFINED HIGH QUALITY WATER ZONE
(15A NCAC 04A. 0105), STABILIZATION WITH GROUND COVER
SHALL BE ACHIEVED AS SOON AS PRACTICABLE BUT IN ANY
EVENT ON ALL AREAS OF THE SITE WITHIN 7 CALENDAR DAYS
FROM THE LAST LAND -DISTURBING ACT.
EROSION CONTROL CONTACT:
DENA SABINSKE, DIRECTOR OF PARKS & RECREATION
TOWN OF WAXHAW
PHONE: [phone] x 278
EMAIL: [e-mail]
MAINTENANCE PLAN:
3. ADDITIONAL MEASURES TO CONTROL EROSION AND
SEDIMENT MAY BE REQUIRED BY A REPRESENTATIVE OF
NCDEQ STAFF. ANY LAND -DISTURBING ACTIVITY >1 ACRE
REQUIRES COMPLIANCE WITH ALL CONDITIONS OF THE
GENERAL PERMIT TO DISCHARGE STORM WATER UNDER
THE NATIONAL POLLUTANT DISCHARGE ELIMINATION
SYSTEM (PERMIT NO.NCG010000). ANY PERMIT
NONCOMPLIANCE IS A VIOLATION OF THE CLEAN WATER
ACT AND MAY REQUIRE ENFORCEMENT ACTION BY
NCDEQ.
4. DISTURBED AREAS DRAINING GREATER THAN ONE ACRE
MUST HAVE AN EROSION CONTROL MEASURE THAT DRAINS
FROM THE WATER SURFACE ELEVATION.
5. REQUIRED ARMY CORPS 404 PERMIT AND WATER QUALITY
401 CERTIFICATION MUST BE OBTAINED FOR STREAM
DISTURBANCES OVER 150 LINEAR FEET.
6. ANY BORROW OR WASTE MATERIAL SHALL BE
TAKEN/PLACED ON A SITE THAT HAS AN ACTIVE APPROVED
GRADING PERMIT. IF THIS IS NOT OBTAINABLE, THEN
CONTRACTOR MAY SUBMIT PLAN FOR APPROVAL TO
NCDEQ PRIOR TO ANY OFF -SITE BORROW/WASTE AREAS
BEING DENUDED AND ANY GRADING OPERATIONS
STARTING ON THIS SITE.
7. ANY GRADING BEYOND THE DENUDED LIMITS SHOWN ON
THE PLAN IS A VIOLATION OF THE NCDEQ EROSION
CONTROL ORDINANCE AND IS SUBJECT TO A FINE.
8. GRADING MORE THAN ONE ACRE WITHOUT AN APPROVED
EROSION CONTROL PLAN IS A VIOLATION OF THE NCDEQ
EROSION CONTROL ORDINANCE AND IS SUBJECT TO A FINE.
9. ANY AND ALL SITE FINES IMPOSED BY NCDEQ OR ANY
OTHER GOVERNING AGENCY SHALL BE PAID BY THE
GRADING CONTRACTOR.
10. SLOPES SHALL BE GRADED NO STEEPER THAN 2:1. FILL
SLOPES GREATER THAN 10' REQUIRE ADEQUATE
TERRACING.
11. SOIL TYPES:
- TUB - TARRUS-URBAN LAND COMPLEX, 2 TO 8 PERCENT
SLOPES
- TbC2 - TARRUS GRAVELLY SILTY CLAY LOAM, 8 TO 15
PERCENT SLOPES, MODERATELY ERODED
12. NAME OF RECEIVING WATER COURSE: RONE BRANCH IN THE
CATAWBA RIVER BASIN
13. CLASSIFICATION OF RECEIVING WATER COURSE: C
1. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CHECKED FOR STABILITY AND
OPERATION FOLLOWING EVERY RUNOFF -PRODUCING RAINFALL, BUT IN NO CASE LESS THAN
ONCE EVERY WEEK. ANY NEEDED REPAIRS WILL BE MADE IMMEDIATELY TO MAINTAIN ALL
PRACTICES AS DESIGN.
2. SEDIMENT WILL BE REMOVED FROM THE TEMPORARY SEDIMENT TRAPS WHEN STORAGE
CAPACITY HAS BEEN APPROXIMATELY 50% FILLED. GRAVEL WILL BE CLEANED OR REPLACED
WHEN THE SEDIMENT POOL NO LONGER DRAINS PROPERLY.
3. SEDIMENT WILL BE REMOVED FROM BEHIND THE SILT FENCE WHEN IT BECOMES ABOUT 0.5
FEET DEEP AT THE FENCE.
4. THE SEDIMENT FENCE WILL BE REPAIRED AS NECESSARY TO MAINTAIN A BARRIER. THE
ENGINEER MAY DIRECT THAT ADDITIONAL SILT FENCING OR EROSION CONTROL MATTING BE
INSTALLED AT ANY TIME PRIOR TO FINAL ACCEPTANCE.
5. ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE INSTALLED IN ACCORDANCE WITH
THE DETAILS INCLUDED IN THESE PLANS UNLESS OTHERWISE DIRECTED BY THE ENGINEER IN
WRITING.
6. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED ONCE THE ENTIRE
SITE IS STABILIZED.
Know what's below.
Call before you dig.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be kept on site and available for
inspection at all times during normal business hours.
Item to Document
Documentation Requirements
(a) Each E&SC measure has been installed
Initial and date each E&SC measure on a copy
and does not significantly deviate from the
of the approved E&SC plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC plan.
E&SC measure shown on the approved E&SC
plan. This documentation is required upon the
initial installation of the E&SC measures or if
the E&SC measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
plan or complete, date and sign an inspection
plan.
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC measures.
plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it is received.
(b) Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the
Division or a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
3. Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down
for maintenance or close out unless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather).
Non -surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met:
a The E&SC Ian authority has been provided with documentation of the non -surface withdrawal and the specific time periods or conditions in which it will occur. The non -surface withdrawal
() p Y p p
shall not commence until the E&SC plan authority has approved these items,
(b) The non -surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States.
CONSTRUCTION ENTRANCE OFF GIVENS: 34°55r23" N, 80°44'44rr W
CONSTRUCTION ENTRANCE OFF LYNN: 34°55r17" N, 80°44'45" W
EROSION CONTROL BLANKET:
ALL DISTURBED AREAS WITH GRADED SLOPES
AT 3:1 OR STEEPER SHALL RECEIVE THE
FOLLOWING EROSION CONTROL BLANKET:
70% STRAW FIBER (.35 LBS/SQ YRD.) 30% COCONUT FIBER (0.15
LBS/SQ. YRD.) NETTING ON BOTH SIDES, LENO WOVEN, 100%
BIODEGRADABLE ORGANIC JUTE FIBER, 9.3 LBS./1000 SQ. FT.
STAPLE WITH .11 GA, 8" U STAPLES AT 2' O.C. DOWN THE SLOPE
AND 1.6' O.C. ACROSS THE SLOPE.
SEED SPECIFICATIONS:
SEE DETAIL 3/C500 FOR TEMPORARY SEEDING MIX AND SPECIFICATIONS
SEE DETAIL 4/C501 FOR PERMANENT SEEDING MIX AND SPECIFICATIONS
TOPSOIL STOCKPILE NOTE:
CONTRACTOR SHALL STRIP AND STOCK PILE EXISTING
TOPSOIL. STOCKPILE ENOUGH TO PLACE 6" OVER ENTIRE
VEGETATED SITE. REVIEW SPECIFICATIONS FOR ADDITIONAL
REQUIREMENTS. TOPSOIL SHALL BE CLEAN, FREE OF ROOT,
DEBRIS, ROCK AND STUMPS. CONTRACTOR SHALL PROVIDE A
SOIL SAMPLE TEST OF EXISTING MATERIAL. CONTRACTOR
SHALL AMEND EXISTING SOILS AS REQUIRED TO MEET THE
SPECIFICATION.
EROSION CONTROL CONTACT
ALL DISTURBED AREAS WITH GRADED SLOPES
AT 3:1 OR STEEPER SHALL RECEIVE THE
FOLLOWING EROSION CONTROL BLANKET:
70% STRAW FIBER (.35 LBS/SQ YRD.) 30% COCONUT FIBER (0.15
LBS/SQ. YRD.) NETTING ON BOTH SIDES, LENO WOVEN, 100%
BIODEGRADABLE ORGANIC JUTE FIBER, 9.3 LBS./1000 SQ. FT.
STAPLE WITH. 1 1 GA, 8" U STAPLES AT 2' O.C. DOWN THE SLOPE
AND 1.6' O.C. ACROSS THE SLOPE.
SELF INSPECTION REQUIREMENTS
1. SELF -INSPECTIONS WILL BE PERFORMED IN ACCORDANCE WITH THE NPDES GENERAL PERMIT FOR CONSTRUCTION
ACTIVITIES NCG010000.
2. ALL TEMPORARY EROSION AND SEDIMENTATION CONTROL MEASURES, INCLUDING SEDIMENTATION CONTROL BASINS,
SEDIMENTATION TRAPS, SEDIMENTATION PONDS, ROCK DAMS, TEMPORARY DIVERSIONS, TEMPORARY SLOPE DRAINS,
ROCK CHECK DAMS, SEDIMENT FENCE OR BARRIERS, ALL FORMS OF INLET PROTECTION, STORM DRAINAGE FACILITIES,
ENERGY DISSIPATERS, STABILIZATION METHODS OF OPEN CHANNELS, AND GROUND COVER SHALL BE INSPECTED BY THE
GENERAL CONTRACTOR.
3. THE DIMENSIONS OF THE BASINS SHALL BE CHECKED AND COMPARED TO THE DIMENSIONS ON THE APPROVED
SEDIMENTATION AND EROSION CONTROL PLAN. NOTIFY BENESCH IF THE DIMENSIONS OF ANY OF THE EROSION CONTROL
MEASURES DEVIATE FROM THE PLANS.
4. A "SELF -INSPECTION REPORT FORM FOR LAND DISTURBING ACTIVITY" (AS REQUIRED BY NCGS 113A-54.1) IS AVAILABLE ON
THE NCDEQ WEBSITE OR PROVIDED WITHIN THE PROJECT MANUAL. ALTERNATIVELY THE OWNER OR DESIGNATED
REPRESENTATIVE COMPLETING THE INSPECTIONS MAY MAKE NOTATIONS ON THE COPY OF THE APPROVED EROSION AND
SEDIMENTATION CONTROL PLAN THAT IS KEPT ON THE PROJECT SITE. DOCUMENTATION SHALL BE ACCOMPLISHED BY
INITIALING AND DATING EACH MEASURE OR PRACTICE SHOWN ON A COPY OF THE APPROVED EROSION AND
SEDIMENTATION CONTROL PLAN OR BY COMPLETING, DATING AND SIGNING AN INSPECTION REPORT THAT LISTS EACH
MEASURE, PRACTICE OR DEVICE SHOWN ON THE APPROVED EROSION AND SEDIMENTATION CONTROL PLAN. ALL
DOCUMENTATION AND/OR REPORTS OF INSPECTIONS MUST BE MADE AVAILABLE ON THE SITE.
5. THE SELF -INSPECTION REPORT IS TO BE COMPLETED AFTER EACH PHASE OF THE APPROVED EROSION AND
SEDIMENTATION CONTROL PLAN IS COMPLETE. THESE PHASES APPLY FOR THIS PROJECT:
5.1. INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES;
5.2. CLEARING AND GRUBBING OF EXISTING GROUND COVER;
5.3. COMPLETION OF ANY PHASE OF GRADING OF SLOPES OR FILLS;
5.4. INSTALLATION OF STORM DRAINAGE FACILITIES;
5.5. COMPLETION OF CONSTRUCTION OR DEVELOPMENT;
5.6. ESTABLISHMENT OF PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
They are less than 25 gallons but cannot be cleaned up within 24 hours,
They cause sheen on surface waters (regardless of volume), or
They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(d) Anticipated bypasses and unanticipated bypasses.
(e) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Department's Environmental Emergency Center personnel at (800)
858-0368.
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
• Within 24 hours, an oral or electronic notification.
deposition in a
e Within 7 calendar days, a report that contains a description of the
stream or wetland
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state impaired -waters conditions.
(b) Oil spills and
• Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
e A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
. Within 24 hours, an oral or electronic notification.
bypasses [40 CFR
• Within 7 calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass.
(e) Noncompliance
. Within 24 hours, an oral or electronic notification.
with the conditions
e Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(I)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction. ]
SECTION E: GROUND STABILIZATION
Required Ground Stabilization
Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
TOTAL DISTURBED AREA: ±7.23 ACRES (PHASE 1 &PHASE 2)
CONSTRUCTION SEQUENCE
1. CONTACT NCDEQ EROSION CONTROL INSPECTOR TO INFORM HIM THAT CONSTRUCTION IS READY TO BEGIN.
2. SET UP AN ON -SITE PRE -CONSTRUCTION CONFERENCE WITH THE NCDEQ EROSION CONTROL INSPECTOR, TOWN OF WAXHAW, CONTRACTOR, AND BENESCH TO
DISCUSS EROSION CONTROL MEASURES.
3. INSTALL CONSTRUCTION ENTRANCE AT GIVENS STREET SEDIMENT/SKIMMER BASINS SEDIMENT TRAPS PERIMETER SILT FENCE PERIMETER DIKES WITH TEMP
SLOPE DRAINS, TEMPORARY DIVERSION DITCHES AND TREE PROTECTION. DEMO AND CLEAR ONLY AS NECESSARY TO INSTALL THESE MEASURES AND TO
ESTABLISH INITIAL PHASE HAUL ROUTE(S). STABILIZE BASIN SLOPES IMMEDIATELY AFTER CONSTRUCTION. COORDINATE ANY CLOSURES OF GIVENS STREET WITH
TOWN OF WAXHAW AND NCDOT.
4. INSTALL PREDEVELOPMENT STORM PIPE AND TEMPORARY STORM PIPE AS SHOWN ON SHEET C301. THIS INCLUDES THE PIPE RUN FROM FES 22 TO D127A. ANY
AREA DISTRUBED FOR THE EXCAVATION/INSTALLATION OF DI 27 AND DI 27A SHALL BE STABILIZED WITH RIPRAP WITH GEOFABRIC UNDERLAY. ENSURE SUMP AT
INLETS IS AT LEAST 12 INCHES AND CLEAN WATER WILL NOT BYPASS INLETS.
5. INSTALL TEMPORARY INLET PROTECTION/SILT SACKS IN DRAINAGE INLETS TO REMAIN WITHIN OR ADJACENT TO DISTURBED LIMITS.
6. CONTACT NCDEQ/EROSION CONTROL INSPECTOR TO INSPECT INITIAL MEASURES. BEGIN DEMOLITION OF EXISTING INFRASTRUCTURE.
7. INSTALL REMAINING CONSTRUCTION ENTRANCES. CLEAR AND GRUB THE REMAINING SITE WITHIN THE DISTURBED LIMITS. INSTALL REMAINING TEMPORARY INITIAL
PHASE DIVERSIONS.
8. COMPLETE NCDEQ SELF INSPECTION REPORT FOR THE INITIAL PHASE EROSION CONTROL.
9. BEGIN GRADING. TAKE CARE THAT DIVERSION DITCHES AS REQUIRED TO MAINTAIN DRAINAGE TO SEDIMENT BASINS.
10. NO GRADING IN TO BE STARTED IN GIVENS STREET RIGHT OF WAY UNTIL STORM SEWER IS INSTALLED IN DITCH.
11. ALL STORM SEWER IN EXISTING DITCHES SHALL BE INSTALLED IN DRY CONDITIONS. CONTRACTOR SCHEDULE WORK ON DAYS WITH FAVORABLE WEATHER
FORECASTS. STORM SEWER PIPE IS TO BE BACKFILLED AT THE END OF WORKING DAY. ANY PIPE RUNS INSTALLED SHALL BE OPERATION AT END OF WORKING DAY.
12. INSTALL INLET PROTECTION AS SHOWN ON SHEETS C301 AND C302 AS STORM DRAINAGE IS INSTALLED.
13. VOLUME OF EXCAVATED DROP INLET PROTECTION FOR DI-29 SHALL BE NOT BE REDUCED FROM PREDEVELOPMENT VOLUME UNTIL UPHILL RETAINING WALL AND
STORM SEWER ARE INSTALLED. SEE SHEET C302
14. STABILIZE ALL NEW DENUDED AREAS WITH TEMPORARY / HYDRO- SEEDING. SEE SEEDING SCHEDULE FOR SEED TYPE, DATES, AND RATES FOR DISTURBED AREAS
WITH GRADED SLOPES FLATTER THAN 3:1. SEE EROSION CONTROL BLANKET NOTE (THIS SHEET) FOR SEEDING ON DISTURBED AREAS WITH GRADED SLOPES AT 3:1
OR STEEPER.
15. SEEDING AND MATTING SHALL BE COMPLETED ON UPSTREAM AREAS SLOPES PRIOR TO REMOVING AND BACKFILLING TEMPORARY SEDIMENT TRAPS. TRAPS
SHALL REMAIN IN PLACE UNTIL REMOVAL IS NECESSARY FOR TRAIL PAVING.
16. COMPLETE ALL CONSTRUCTION WITHIN PROJECT LIMITS. CONTINUE TO STABILIZE ALL OPEN AREAS WITHIN STABILIZATION REQUIREMENTS WHERE
LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED.
17. EROSION CONTROL MEASURES DIRECTLY AFFECTED BY THIS CONTRACT SHALL BE MAINTAINED/REMOVED UNDER THIS CONTRACT. DEVICES SHALL BE
MAINTAINED TO MAX. 50% CAPACITY UNTIL AREAS THEY SERVE ARE FULLY STABILIZED.
18. PROVIDE PERMANENT GRASSING FOR ALL DISTURBED AREAS.
19. CONTACT NCDEQ FOR PERMISSION TO REMOVE EROSION CONTROL DEVICES.
20. REMOVE ALL EROSION CONTROL DEVICES. SPREAD AND SEED ACCUMULATED SEDIMENT.
21. ALL EROSION CONTROL MEASURES SHALL BE IN ACCORDANCE WITH THE N.C. EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, U.S. DEPT. OF
AGRICULTURE, AND THE SCS EROSION CONTROL ORDINANCE.
22. THE CONTRACTOR SHALL DILIGENTLY AND CONTINUOUSLY MAINTAIN ALL EROSION CONTROL DEVICES AND STRUCTURES TO MINIMIZE EROSION.
23. CLEANWATER BYPASS IS TO BE DIVERTED AROUND SITE UNTIL THE SEDIMENT BASIN #2 HAS BEEN CONVERTED TO WETPOND. STORM INLET DI 3A IS TO BE
BLOCKED FROM RECEIVING RUNOFF UNTIL THAT POINT.
24. CALL THE WATER QUALITY INSPECTOR TO SET UP A BMP/SCM PRE -CONSTRUCTION MEETING PRIOR TO STARTING ANY WORK ON THE CONVERSIONS. THIS
MEETING SHOULD TAKE PLACE AT LEAST 48 HOURS PRIOR TO STARTING CONSTRUCTION ON ANY SCM/BMP AND SHALL INCLUDE THE DESIGN ENGINEER TO
ENSURE ENGINEERING INSPECTIONS ARE PERFORMED AT KEY BMP INSTALLATION PHASES.
25. THE DESIGN ENGINEER MUST VERIFY AND CERTIFY THE DRAINAGE AREA IS PROPERLY STABILIZED; MEASURES ARE IN PLACE TO PREVENT SEDIMENTATION INTO
THE SCM/BMP; THE STORM DRAINS, INLETS AND PAVEMENTS HAVE BEEN PROPERLY CLEANED PRIOR TO THE COMMENCEMENT OF BMP CONSTRUCTION.
26. THE SKIMMER SHALL REMAIN ATTACHED TO THE RISER DURING THE EXCAVATION OF THE PERMANENT POND CONFIGURATION. THE SKIMMER SHALL REMAIN IN
USE UNTIL THE INTERIOR OF THE BASIN HAS BEEN ADEQUATELY STABILIZED WITH ADEQUATE PERMANENT VEGETATION. INSTALL SKIMMER ARM ON POND DRAIN
DURING CONVERSION OF THE WETPOND TO DE -WATER BASIN IF NECESSARY.
27. STOCKPILE AREAS AS SHOWN ARE ONLY APPROXIMATE AND IT IS PERMISSIBLE FOR THE CONTRACTOR TO CHANGE AS NECESSARY, AS LONG AS IT DOES NOT
OBSTRUCT ANY EROSION CONTROL MEASURES, IS NOT LOCATED WITHIN 50' OF A STORM DRAIN, BASIN OR STREAM, AND DOES NOT EXCEED 2:1 SLOPE.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
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CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground
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QNCDEQ Comments
Sheet Title:
17000403.01
04.19.22
EROSION
CONTROL
NOTES &
SEQUENCE
Sheet No:
05.12.22
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING
EFFECTIVE: 04/01 / 191
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01 / 191
C 3 0 0