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HomeMy WebLinkAboutNCC221629_Site Plan or Location Map_20220427EROSION CONTROL PLANS PHASE 2: LOTS 79- 184 WAKE FOREST, NORTH CAROLINA JANUARY 29, 2021 BUILDER RYAN 5734 TRINITY GENERAL APPROVED NOTES: 1. Construction details provided in this standard plan are NOT drawn to scale. 2. These details are for lots with less than one acre of land disturbance. 3. If the land disturbance on a single lot is greater than one acre, a custom plan should be submitted for the 30-day review cycle that addresses berms/diversions and sediment storage traps and basins. 4. This document is a guideline to control sediment onsite for single family lots with a disturbed area of less than one acre. Additional sediment control measures may be needed on a site -by -site basis. 5. Additional information on specification and installation guidelines can be obtained from the State Erosion and Sedimentation Control Design Manual. httDs://dea.nc.aov/about/divisions/enerav-mineral-land-resources/erosion-sediment-control EROSION PERMIT NOTES: 1. A LAND DISTURBING (E&SC) PERMIT IS REQUIRED FOR PROJECTS OVER 0.50 ACRE. IF MULTIPLE LOTS WITH LAND DISTURBANCE OVER 0.50 ACRE TOTAL ARE EITHER CONTIGUOUS OR NON-CONTIGUOUS IN THE SAME SUBDIVISION, BEING TAKEN DOWN BY THE SAME BUILDER/OWNER, A LAND DISTURBING PERMIT IS REQUIRED. THE COST OF THE PLAN REVIEW AND PERMIT IS $500/ACRE ROUNDED UP (EX: 1.1 ACRES = 2 ACRES @ $500/ACRE = $1000). THE FEE IS DUE AT TIME OF PLAN SUBMITTAL. DEVELOPER IS RESPONSIBLE FOR INFORMING BUILDER OF E&SC PERMIT REQUIREMENTS ON INDIVIDUAL LOTS. DISCLAIMER: Town of Wake Forest fees and charges are subject to change without notice. Please call 919-435-9443 to confirm current fees and charges. 2. IF ADDITIONAL ACREAGE IS ADDED TO AN EXISTING PERMIT REVISED FORMS, PLANS, AND ANY ADDITIONAL FEES MUST BE SUBMITTED. 3. IF OWNERSHIP OF A PROPERTY HAS CHANGED A REVISED FRO MUST BE SUBMITTED. 4. IF A PROPERTY IS TAKEN OVER BY THE BANK, THE BANK SHALL CONTACT THE TOWN AND REPAIR ALL EROSION CONTROL MEASURES TO TOWN/NCDENR STANDARDS. THEY SHALL ALSO SUBMIT A NEW FRO FORM. 5. IF A PROJECT IS NOT COMPLETE WITHIN TWO YEARS, THE PLANS MUST BE RENEWED AT $250/ACRE. A REVISED SET OF PLANS MAYBE SUBMITTED IF ACREAGE HAS ALREADY BEEN DEVELOPED AND A CERTIFICATE OF OCCUPANCY HAS BEEN ISSUED. 6. AN EROSION PRECONSTRUCTION MEETING MUST BE HELD WITH THE TOWN OF WAKE FOREST PRIOR TO START OF ANY WORK, INCLUDING INSTALLATION OF EROSION CONTROL MEASURES, DEMOLITION, CUTTING TREES, AND GRUBBING. CALL ENGINEERING AT (919) 435-9443 TO SET UP A MEETING. ALL PLANS MUST BE SIGNED AND COPIES RETURNED BACK TO THE TOWN 1 WEEK PRIOR TO PRECONSTRUCTION MEETING. 7. THE OWNER, GENERAL CONTRACTOR, GRADING COMPANY, AND EROSION CONTROL INSTALLER MUST BE PRESENT AT THE PRECONSTRUCTION MEETING. 8. THE E&SC PERMIT AND NPDES GENERAL STORMWATER PERMIT WILL BE GIVEN OUT AT THIS MEETING. E&SC CONSTRUCTION SEQUENCE NOTES: 1. AFTER THE PRECONSTRUCTION MEETING IS HELD, THE CONTRACTOR CAN INSTALL INITIAL EROSION CONTROL MEASURES ONLY. THIS INCLUDES BUT IS NOT LIMITED TO CONSTRUCTION ENTRANCE, SILT FENCE, PERIMETER DIVERSION DITCH, CHECK DAMS (ROCK OR WADDLE TYPE), TREE PROTECTION FENCE, EXISTING INLET PROTECTION, SKIMMER SEDIMENT BASINS, AND SEDIMENT TRAPS. CLEAR ONLY AS NECESSARY TO INSTALL THESE MEASURES. 2. CONTRACTOR IS RESPONSIBLE FOR E&SC WEEKLY INSTALLATION AND MAINTENANCE LOG INCLUDING DATES OF TEMPORARY/PERMANENT GROUND COVER, A RAIN GAGE, COPY OF TOWN OF WAKE FOREST (ToWF) SIGNED PLANS ONSITE, REVISED SIGNED PLANS, NPDES LOG, AND CONSTRUCTION BOX MUST BE PRESENT AND EASILY ACCESSIBLE ONSITE. 3. ONCE MEASURES ARE INSTALLED, CONTRACTOR/FRO TO CALL ToWF FOR AN INITIAL INSPECTION. IF SITE PASSES INSPECTION, A CERTIFICATE OF COMPLIANCE WILL BE ISSUED. CONTRACTOR CAN NOW BEGIN CLEARING, GRUBBING, AND GRADING. 4. CONTRACTOR TO MAINTAIN ACCESS ROAD FOR EMERGENCIES AT ALL TIMES. 5. PHASE PROJECT TO LEAVE AS LITTLE GROUND OPEN AS POSSIBLE. 6. TEMPORARILY SEED, STRAW AND TACK OR HYDROSEED WITHIN 14 DAYS OF ANY PHASE OF GRADING, INCLUDING SLOPES. SEED BASINS AND DITCHES IMMEDIATELY AFTER CONSTRUCTION. 7. PRIOR TO REMOVAL OF TEMPORARY MEASURES, TOWN MUST APPROVE REMOVAL. ALL AREAS ABOVE TEMPORARY MEASURE MUST HAVE 85% GROUND COVER. 8. THE TOWN OF WAKE FOREST CONSTRUCTION INSPECTOR WILL EVALUATE THE SITE AT LEAST ONCE A MONTH. A COPY OF THE INSPECTION FORM WILL BE EMAILED TO THE FRO. THE WEEKLY EROSION LOG AND NPDES LOG MUST BE ONSITE AND AVAILABLE FOR REVIEW. RALBISH, PHONE: HOMES ROAD, 919 SUITE NC 27607 -233-0793 NOrthT8� Car olina�� 200 VICINITY MAP SCALE: 1 "=1200' INDEX OF DRAWINGS SHEET 1 COVER SHEET SHEET 2 SITE PLAN 1 SHEET 3 SITE PLAN 2 SHEET 4 SITE PLAN 3 SHEET 5 TYPICAL LOT ESC MEASURES SHEET 6 STANDARD ESC DETAILS SHEET 7 STANDARD ESC DETAILS LOT AREA TABLE Lot # LOD (AC) LOD (SF) 79 0.12 5355 80 0.12 5355 81 0.12 5355 82 0.13 5742 83 0.16 6997 84 0.18 7828 85 0.20 8819 86 0.17 7353 87 0.20 8745 88 0.19 8167 89 0.16 6996 90 0.15 6707 91 0.14 6278 92 0.17 7291 93 0.19 8233 94 0.21 9012 95 0.17 7338 96 0.18 7926 97 0.20 8923 98 0.26 11309 99 0.36 15898 100 0.28 12104 101 0.19 8416 102 0.16 7066 103 0.13 5587 104 0.13 5582 105 0.13 5582 106 0.13 5582 107 0.13 5582 108 0.13 5582 109 0.13 5497 110 0.13 5497 111 0.13 5583 112 0.13 5583 113 0.13 5583 114 0.13 5583 LOT# LOD (AC) LOD (SF) 115 0.13 5583 116 0.13 5583 117 0.13 5583 118 0.13 5583 119 0.13 5584 120 0.13 5584 121 0.13 5584 122 0.13 5584 123 0.13 5584 124 0.16 6822 125 0.32 14014 126 0.29 12516 127 0.34 14701 128 0.13 5873 129 0.15 6471 130 0.16 6908 131 0.16 7085 132 0.16 7134 133 0.16 7077 134 0.16 7117 135 0.17 7571 136 0.13 5649 137 0.13 5661 138 0.21 9045 139 0.24 10346 140 0.22 9511 141 0.20 8535 142 0.18 7683 143 0.13 5630 144 0.13 5742 145 0.12 5355 146 0.12 5355 147 0.12 5355 148 0.13 5754 149 0.13 5839 150 0.13 5840 NOTE: TOTAL LIMIT OF DISTURBANCE IS 16.61 ACRES LOT # LOD (AC) LOD (SF) 151 0.13 5839 152 0.13 5840 153 0.13 5840 154 0.13 5839 155 0.16 7083 156 0.16 6861 157 0.17 7475 158 0.16 6916 159 0.13 5615 160 0.13 5839 161 0.13 5839 162 0.13 5839 163 0.13 5839 164 0.13 5839 165 0.13 5839 166 0.13 5754 167 0.13 5666 168 0.13 5839 169 0.13 5839 170 0.13 5839 171 0.13 5839 172 0.13 5839 173 0.13 5833 174 0.26 11455 175 0.13 5840 176 0.13 5840 177 0.13 5840 178 0.13 5840 179 0.13 5840 180 0.13 5840 181 0.13 5840 182 0.13 5839 183 0.13 5840 184 0.13 5696 � I I � I I I W — I s I � I I � J L I I I V1 J ESC LEGEND LOB PR. LIMIT OF DISTURBANCE u i SF PR. SILT FENCE PR. STONE OUTLET scE PR. STABILIZED CONSTRUCTION ENTRANCE (SCE) D MORRIS & RITCHIE ASSOCIATES OF NC, PC — + _ i ENGINEERS, ARCHITECTS, PLANNERS, SURVEYORS AND LANDSCAPE ARCHITECTS _ 5605 CHAPEL HILL RD, STE 112 p 1p + w T 7—� RALEIGH, NC 27607 Q I (984) 200-2103 w — ---- WWW.MRAGTA.COM Q o © 2020 MORRIS & RITCHIE ASSOCIATES OF NC, PC m �atA° OVERALL EROSION CONTROL PLAN �I SEAL FOR i 034417 i MASON OAKS i ,( PHASE 2 /29/21 TOWN OF WAKE FOREST WAKE COUNTY, NC DATE REVISIONS JOB NO.: 20454 SCALE: AS SHOWN DATE: 01 /29/21 DRAWN BY: PL 100 0 100 200 300 DESIGN BY: PL i I � SCALE 1 " = 100' REVIEW BY: JG SHEET: 2 OF 7 I D 1 9 L D K3BEBB -t Z O ,.r t6 9 m o, Q 95 / 96 I I Eq � I L vY vY v} v} vY I I L a a � I L 0 \ l o � - L I I ° I I r ,iSC I o a I L jL 1 80 / L m I Y Y I I J II L I L_ I L I Qp L I I L II b l I Y sc I I b � 9D_ I / (zg c o m I I L I a / I ° I } L J ear I I fi L I r \/ / I I J I m I / _j L_ — — - I L I } I _ I 80 I II 1 L I ESC LEGEND I _ _ LOB PR. LIMIT OF DISTURBANCE Y SF PR. SILT FENCE PR. STONE OUTLET a scE PR. STABILIZED CONSTRUCTION ENTRANCE (SCE) b OL Y I_ ■ ATGHUNE (SEE 555T 4) MORRIS &RITCHIE ASSOCIATES OF NC, PC i W i mf m ENGINEERS, ARCHITECTS, PLANNERS, SURVEYORS AND LANDSCAPE ARCHITECTS k . A N —, A = 5605 CHAPEL HILL RD, STE 112 p 1p + w T � RALEIGH, NC 27607 (984) 200-2103 WWW.MRAGTA.COM © 2020 MORRIS & RITCHIE ASSOCIATES OF NC, PC CA OVERALL EROSION CONTROL PLAN a SEAL 1 FOR 034417 x MASON OAKS LOTS 79-109, 167-184 $WSW/29/21 ENGINEER'S SEAL TOWN OF WAKE FOREST WAKE COUNTY, NC DATE REVISIONS JOB NO.: 20454 SCALE: 1 " = 50' ■ DATE: 01 /29/21 ■ 50 0 50 100 150 DRAWN BY: PL mam DESIGN BY: PL I ! SCALE 1" = 50) REVIEW BY: JG SHEET: 3 OF 7 C O 3 d a 0 M,,NTGHUNE (SEE SHEET 5) I D 1 c 7071 r F rcE I I J L — woe ` ,SCE 6 _ I L 7 -� 4 4 I lgol I as e I e I I I I \ �► Q� o -1 I � � I I I \ ,p c I I q I I > - wee � . •�2C I � I L 1 � I I I 6 � � J I I 7 L-oe--- Ne — I .> I I I I I � Epp •��.� \ / / r i \ / Qm �•` � c I J II \ I II II I ° I I ESC LEGEND J � h 2 LOD PR. LIMIT OF DISTURBANCE L / I SF PR. SILT FENCE / r J / v O v PR. STONE OUTLET I \Y. PR. STABILIZED CONSTRUCTION ' SCE ENTRANCE (SCE) 6 \ I MORRIS & RITCHIE ASSOCIATES OF NC, PC \ \ ENGINEERS, ARCHITECTS, PLANNERS, SURVEYORS AND LANDSCAPE ARCHITECTS k . _ 5605 CHAPEL HILL RD, STE 112 a,AA IF 11 RALEIGH, NC 27607 (984) 200-2103 \ I WWW.MRAGTA.COM ° I I 2020 MORRIS & RITCHIE ASSOCIATES OF NC, PC R �� I I Z \ \ I J L •`o"I" cAR°�"'•� OVERALL EROSION CONTROL PLAN 10 �pG 4 � .`1 .• pfESS/Q�4• �i ---------- - - -- - - - oe-- s Lam{ —tea SEAL * FOR m 034a1T lip MASON OAKS r LOTS 110-166 +4rf�tt►�' /29/21 ENGINEER'S SEAL TOWN OF WAKE FOREST WAKE COUNTY, NC DATE REVISIONS JOB NO.: 20454 SCALE: 1 " = 50' ■ DATE: 01 /29/21 ■ DRAWN BY: PL 50 0 50 100 150 DESIGN BY: PL I I � SCALE 1 " = 50' REVIEW BY: JG SHEET: 4 OF 7 V7 SILT FENCE OUTLET TYPE A SILT FENCE OUTLET TYPE D WAKE COUNTY NORTH CAROLINA EFFECTIVE: SILT FENCE OUTLET SILT FENCE SILT FENCE OUTLET SILT FENCE OU7 J FENCE CONSTRUCTION ENTRANCE SILT FE_ OUT TYPE B TYPE E SILT FENCE ONSTRUCTION NTRANCE NOTES: SILT FENCE OUTLET TYPE C SILT FENCE OUTLET SILT FENCE ONSTRUCTION ENTRANCE I. WRAP EACH INDIVIDUAL LOT WITH SILT FENCE ON ALL SIDES AND INSTALL SILT FENCE OUTLETS SHOWN ON SCHEMATIC/DIAGRAM. 2. THESE DETAILS ARE FOR ONLY LOTS WITH DISTURBED AREA LESS THAN AN ACRE. 3. IF THE DISTURBED AREA IS GREATER THAN AN ACRE, A PLAN SHOULD BE SUBMITTED FOR THE 30-DAY REVIEW CYCLE. THE PLAN SHOULD ADDRESS BERM/DIVERSION AND SEDIMENT TRAP/BASIN. 4. IF MULTIPLE LOTS SHARE SILT FENCE WITH NONE INSTALLED BETWEEN THE LOTS, A REVISED PLAN WILL BE REQUIRED AND A NOV WITH CIVIL PENALTY WILL BE ISSUED. 5. INLETS DOWNSTREAM FROM DISTURBANCES SHOULD BE PROTECTED STREETS SHOULD BE SWEPT AT A MINIMUM DAILY, AND MEASURES REMOVED OR DAMAGED BY SUB -CONTRACTORS OR UTILITIES SHALL BE RE -INSTALLED AT THE END OF THE WORK DAY. 6. DETAILS FOR SILT FENCE, SILT FENCE OUTLET, CONSTRUCTION ENTRANCE AND OTHER MEASURES ARE PROVIDED ON OTHER PAGES. 7. NONE OF THE DETAILS ARE DRAWN TO SCALE. 8. IF LOTS ARE CONTIGUOUS, LOTS CAN NOT SHARE THE SILT FENCES. EACH LOT NEEDS TO HAVE THEIR INDIVIDUAL SILT FENCES. THIS WOULD MEAN THERE SHOULD BE MINIMUM TWO SILT FENCES BETWEEN THE LOTS. TYPICAL INDIVIDUAL LOT SEDIMENT & EROSION CONTROL MEASURES Fmlkw MINIMUM 10 c LINE WIRES 11 FRONT VIEW NOTES: STEEL POST WOVEN WIRE FABRIC 1. USE SILT FENCE ONLY WHEN DRAINAGE AREA DOES NOT EXCEED 1/4 ACRE AND SILT FENCE FABRIC NEVER IN AREAS OF CONCENTRATED FLOW. 2. REMOVE DEPOSITED SEDIMENT WHEN 50% CAPACITY IS REACHED AND AS NEEDED TO M = PROVIDE STORAGE VOLUME FOR THE NEXT FILL SLOPE oe_—GRADE RAIN EVENT AND TO REMOVE HYDRAULIC PRESSURE ON THE SILT FENCE. z 3. INSPECT SILT FENCE WEEKLY AND AFTER EACH RAIN EVENT. 8" MINIMUM COVER OVER SKIRT ' ANCHOR SKIRT AS DIRECTED BY ENGINEER " ri SIDE VIEW STANDARD TEMPORARY SILT FENCE DETAIL EFFECTIVE: 2/15/19 V MIN. TOP OF SILT FENCE MUST BE AT LEAST 1' ABOVE THE TOP OF THE WASHED STONE NOTES: 1. REMOVE SEDIMENT WHEN HALF OF STONE OUTLET IS COVERED. FRONT VIEW 2. REPLACE STONE AS NEEDED TO FACILITATE DEWATERING. 3. STONE OUTLETS SHOULD BE PLACED ON STEEL FENCE POST LOW ELEVATION AREAS OF SILT FENCE, STEEL FENCE POST AND BASED ON FIELD CONDITIONS. WIRE FENCE SET MAX 2' APART 4. PER NCG-01, INSPECT OUTLET AT LEAST HARDWARE CLOTH MIN. 18" INTO SOLID ONCE A WEEK AND AFTER EACH RAIN GROUND EVENT. COMPLETE ANY REQUIRED REPAIRS IMMEDIATELY. FRESHEN STONE WHEN SEDIMENT ACCUMULATION IS 6 INCHES OR FILTER OF #57 AS NEEDED. KEEP MESH FREE OF DEBRIS TO WASHED STONE PROVIDE ADEQUATE FLOW. c$ 3' FILTER FABRIC ON GROUND 0 Q QjO° O� IMUM 12-1/2 GAUGE RMEDIATE WIRES GRADE BURY WIRE FENCE AND HARDWARE CLOTH / BURY 8" OF UPPER EDGE OF FILTER FABRIC IN TRENCH A SECTION VIEW coUNT ORTHCAROL IN STANDARD TEMPORARY SILT FENCE OUTLET DETAIL EFFECTIVE: 2/15/19 EXISTING ROADWAY �1l;�II►[�3.7d�I ATOALIN EFFECTIVE: 2/15/19 BUT SUFFICIENT TO KEEP SEDIMENT ON SITE 11!11" 2"-3" STONE TO BE USED ld;7h (SURGE STONE OR RAILROAD BALLAST) PI ANI \/IF\A/ SILT FENCE BURY WIRE FENCE, FILTER FABRIC, AND HARDWARE CLOTH IN TRENCH A-5 NOTES: 1. INSTALL SILT FENCE OR TREE PROTECTION FENCE ADJACENT TO CONSTRUCTION ENTRANCE TO DIRECT VEHICLES TO DRIVE ON STONE. 2. IF MUD IS NOT REMOVED FROM THE VEHICLES TRAVELING OVER THE STONE, THEN THE TIRES OF THE VEHICLES MUST WASHED BEFORE ENTERING THE PUBLIC ROAD OR THE CONSTRUCTION ENTRANCE MUST BE 10—FT OR WIDTH OF LENGTHENED. SWEEP STREETS IMMEDIATELY IF PROPOSED STREET, MUD IS TRACKED OFFSITE ONTO PUBLIC ROADS. WHICHEVER 3. MAINTAIN CONSTRUCTION ENTRANCE IN A GREATER. CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE SITE. ENTRANCE WILL REQUIRE PERIODIC REMOVAL OF SEDIMENT -LADEN STONE AND REPLACEMENT WITH FRESH STONE. IMMEDIATELY REMOVE ALL MUD/SEDIMENT/ROCK TRACKED OFF THE LOT. NEW CONSTRUCTION 30'-0* MINIMUM NAY �T V MIN. =11=11 II :I ' II II=11 11=11:-11:-11 11=11 II 11:-11=11= CROSS SECTION STANDARD CONSTRUCTION ENTRANCE DETAIL PI A KI \/I F\A/ A NORTH TOLIN EFFECTIVE: 2/15/19 ED TO Fl W 1: M T B SECTION VIEW NOTES INLET PROTECTION WILL REQUIRE PERIODIC REMOVAL OF SEDIMENT -LADEN STONE AND REPLACEMENT WITH FRESH STONE. INSPECT PERIODICALLY AND REPLACE STONE AS NEEDED. KEEP MESH FREE OF DEBRIS TO PROVIDE ADEQUATE FLOW. STANDARD INLET PROTECTION DETAIL A— / Temporary seeding recommendations for late Winter/Early Spring Temporary seeding recommendations for Summer Temporary seeding recommendations for Fall Seeding Mixture Seeding Mixture Seeding Mixture Species Rate (Lb/acre) Species Rate (Lb/acre) Species Rate (Lb/acre) Rye (green) 120 German millet 40 Rye 120 Annual lespedeza (Kobe in Piedmont and Costal Plain, Korean in Mountains) 50 Seeding dates: Seeding dates: Mountains- May 15-Aug 15 Mountains- Aug 15 - Dec 15 Piedmont- May 1 -Aug 1 Piedmont- Aug 15 - Dec 30 Omit annual lespedeza when duration of temporary cover is not to Costal Plain- April 15- Aug 15 Costal Plain- Aug 15 - Dec 15 extend beyond June. Seeding dates: Soil Amendments: Soil Amendments: Mountains- Above 2,500 feet: Feb 15- may 15 Follow recommendations of soil tests or apply 2,000 lb/acre Follow recommendations of soil tests or apply 2,000 lb/acre Below 2,500 feet: Feb 1-May 1 ground agricultural limestone and 750 lb/acre 10-10-10 ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer. fertilizer. Soil Amendments: Follow recommendations of soil tests or apply 2,000 lb/acre ground Mulch: Mulch: agricultural limestone and 750 lb/acre 10-10-10 fertilizer. Apply 4,000/lb/acre straw. Anchor straw by asphalt tack, Apply 4,000/lb/acre straw. Anchor straw by asphalt tack, netting or a mulch anchoring tool. A disk with blades set netting or a mulch anchoring tool. A disk with blades set Mulch: nearly straight can be used as a mulching anchoring tool. nearly straight can be used as a mulching anchoring tool. Apply 4,000/lb/acre straw. Anchor straw by asphalt tack, netting or a mulch anchoring tool. A disk with blades set nearly straight can be Maintenance: Maintenance: used as a mulching anchoring tool. Re -fertilize if growth is not fully adequate. Reseed, re -fertilize Repair and maintain damaged areas immediately. Topdress and mulch immediately following erosion and other damage. with 50 lb/acre of nitrogen in March. If it is necessary to Maintenance: extend temporary cover beyond June 15, overseed with 50 Re -fertilize if growth is not fully adequate. Reseed, re -fertilize and lb/acre Kobe (Piedmont and Costal Plain) or Korean mulch immediately following erosion and other damage. (Mountains) lespedeza in late February or early March. 7CAR OLIN EFFECTIVE: 2/15/19 A COUNT ORTH CAROLIN EFFECTIVE: 2/15/19 PERMANENT SEEDING REQUIREMENTS 1. Permanent seeding, sodding, or other means of stabilization are required when all construction work is completed according to the stabilization timeframes in the above tables. 2. A North Carolina Department of Agriculture Soils Test (or equal) should be obtained for all areas to be seeded, sprigged, sodded or planted. Recommended fertilizer and pH adjusting products should be incorporated to the soil. 3. Use a seeding mix of non-invasive, native species that will eventually provide a permanent groundcover. Recommendations for surface stabilization may be found at: h :// ortal.ncdenr.or web/lr/ ublications. 4. Immediate vegetative cover will always require additional fertilization, soil tests, overseeding and maintenance until permanent vegetative cover is established. SEEDING REQUIREMENTS NPDES GROUND STABILIZATION TIMEFRAMES A-13 GROUND STABILIZATION REQUIREMENTS SITE AREA DESCRIPTION STABILIZATION TIMEFRAME EXCEPTIONS PERIMETER DIKES, SWALES, DITCHES AND SLOPES 7 DAYS NONE HIGH QUALITY WATER (HQW) ZONES 7 DAYS NONE SLOPES STEEPER THAN 3:1 7 DAYS IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN 50' IN LENGTH ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1 14 DAYS NONE, EXCEPT FOR PERIMETERS AND HQW ZONES. GROUND STABILIZATION REQUIREMENTS FOR FALLS LAKE WATERSHED SITE AREA DESCRIPTION STABILIZATION TIMEFRAME EXCEPTIONS PERIMETER DIKES, SWALES, DITCHES AND SLOPES 7 DAYS NONE HIGH QUALITY WATER (HQW) ZONES 7 DAYS NONE SLOPES STEEPER THAN 3:1 7 DAYS IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN 50'IN LENGTH ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1 14 DAYS NONE, EXCEPT FOR PERIMETERS AND HQW ZONES. NPDES GROUND STABILIZATION TIMEFRAMES TABLE A-12 CONSTRUCTION SITE WASTE MANAGEMENT AND SPILL CONTROL Per the NCG-01, the Construction Site Pollution Prevention Plan should include the following elements: 1. Material Inventory Document the storage and use of the following materials: a. Concrete b. Detergents c. Paints (enamel and latex) d. Cleaning solvents e. Pesticides f. Wood scraps g. Fertilizers h. Petroleum based products 2. Good housekeeping practices a. Store only enough product required to do the job. b. All materials shall be stored in a neat, orderly manner in their original labeled containers and covered. c. Substances shall not be mixed. d. When possible, all of a product shall be used up prior to disposal of the container. e. Manufacturers' instructions for disposal shall be strictly adhered to. f. The site foreman shall designate someone to inspect all BMPs daily. 3. Waste management practices a. All waste materials shall be collected and stored in securely lidded dumpsters in a location that does not drain to a waterbody. b. Waste materials shall be salvaged and/or recycled whenever possible. c. The dumpsters shall be emptied a minimum of twice per week, or more if necessary. The licensed trash hauler is responsible for cleaning out dumpsters. d. If fertilizer bags cannot be stored in a weather-proof location, they shall be kept on a pallet and covered with plastic sheeting which is overlapped and anchored. 4. Equipment maintenance practices a. If possible, equipment should be taken to off -site commercial facilities for washing and maintenance. b. If performed on -site, vehicles shall be washed with high-pressure water spray without detergents in an area contained by an impervious berm. c. Drip pans shall be used for all equipment maintenance. d. Equipment shall be inspected for leaks on a daily basis. e. Fuel nozzles shall be equipped with automatic shut-off valves. All used products such as oil, antifreeze, solvents and tires shall be disposed of in accordance with manufacturers' recommendations and local, state and federal laws and regulations. PLAN VIEW (BELOW GRADE) to- o_ O5 C� 1 1 Z , U I r 10 MIL. PLASTIC LINER WITH #57 STONE I01-0" (20'-0" TOTAL) I 3,-0„ I (60" TOTAL BOTTON 1i I 2' 0" I 1'-0" I 2' O" I I 10 MIL. PLASTIC LINING 0.5 lr SECTION A -A 0.5 0 r 3151 p4� {31S�OPP ANCHOR I -I I I PLASTIC LINER I 1=1 1 1- 1 ,, WITH 057 STONE (1/2 SECTION) EXCAVATED PIT WITH STONE SUPPORT NOT TO SCALE STONE SUPPORT NOTES: 2. The "concrete washout" sign shall be installed within 30 ft of the temporary concrete washout facility. 3. Pit capacity is minimum of 6 cu f t per 10 cu yd of concrete. 4. Contractor to coordinate with usage contracting officer for proper disposal of concrete. I g g P Pe P I TOWN of WAKE FOREST, NC Manual of Specifications, Standards and Design scaCONCRETE WASHOUT Not To Scale 9`76 To TOWN of WAKE FOREST PIT DETAIL Revision Date: Sheet#: Feb., 2015 1 of 4 STAPLES, (2) PER BALE WOOD OR METAL i STAKES Q PER BALE) �I 10 MIL. PLASTIC LINING (SHOW CUT AWAY FOR CLARITY) NATIVE MATERIAL (OPTIONAL) - I 5'-0" MIN. (10' MIN. TOTAL) , I STAPLES, (2) PER BALE I BINDING WIRE-- I I I 10 M Li PLASTIC LINING STRAW BALES 1p- IL LL_XI r 1L •' b. -��,Fw� (ABOVE GRADE) 2'-0" 315�/ WOOD OR META I SECTION C-C STAKES (2 PER BALE) (1 /2 SECTION) ELEVATED PIT WITH STRAW BALE DETENTION WALLS NOT TO SCALE STRAW BALE DETENTION NOTES: I _ Actual layout to be determined in field. 2. The "concrete washout" sign shall be installed within 30 ft of the temporary concrete washout facility. 3. Pit capacity is minimum of 6 cu f t per 10 cu yd of concrete. Contractor to coordinate with usage contracting officer for proper disposal of concrete. TOWN of WAKE FOREST, NC Manual of Specif ications, Standards and Design CONCRETE WASHOUT Detail#: Not To To Scale 9.76 TOWN of Revisioni?ate: S1,eet4 WAKE FOREST PIT DETAIL Feb, 2015 3 of 4 \ / PLAN VIEW BELOW GRADE) jo- o ¢�`� o � moo• ,ti6 O� sQ o> 100 ,1 11 +_O" SQ BOTTOM SEE NOTE 3 10 MIL. PLASTIC LINING \ ANCHOR PLASTIC LINER WITH AN ADEQUATE AMOUNT OF SANDBAGS 10'-0" (2G-0" TOTAL) 2'-O" (47-0" TOTAL BOTTOM) I Y-0" 1'-0 7'-0„ 2'-0" 0 m 10 MIL. PLASTIC 3151% -III-III-III_ ANCHOR PLASTIC I _ I I �- LINER WITH AN ADEQUATE AMOUNT OFSANDBAGS (1 /2 SECTION) EXCAVATED PIT WITH SAND BAG SUPPORT NOT TO SCALE SAND BAG SUPPORT NOTES: 2. The"concrete washout" sign shall beinstalled within 30 ft of the temporary con r to washout facility. 3. Pit capacity is minimum of 6 cu It per 10 cu d of concrete. I P Y P Y I 4. Contractor to coordinate with usage contracting office[ for proper disposal of concrete. TOWN of WAKE FOREST, NC Manual of Specif ications, Standards and Design CONCRETE WASHOUT Detail# Not To To Scale 9.76 TOWN of WAKE FOREST PIT DETAIL Revision Date: Sheet#. Feb, 2015 2 of 4 PLYWOOD 48"x24" C O N C R E T E °IIIi I°CONCRETE PAINTED WHITE i i I BLACK LETTERS W A S H 0 U T 6' HEIGHT I°I I I 0.5" LAG SCREWS 0 m WOOD POST Tx3"x8' I I I I I I I I I I I I I I I I I I I I O I I I I I I I [ I I I I I I I i I I I I LJ LI SIGN DETAIL (OR EQUIVILANT) CONCRETE WASHOUT DETAIL NOTES Concrete washouts are used to contain concrete and liquids when the chutes of concrete mixers and hoppers of concrete pumps are rinsed out after delivery. The washout facilities consolidate solids for easier disposal and prevent runoff of liquids. The wash water is alkaline and contains high levels of chromium, which can leach into the ground and contaminate groundwater. It can also migrate to a storm drain, which can increase the pH of area waters and harm aquatic life. Revised NPDFS and NC General Construction Permits require the use of concrete washout areas on all sites using concrete: 1. No concrete or cement slurry shall be discharged from the site. 2, Any hardened concrete residue shall be disposed of, or recycled on site, in accordance with local and state solid waste regulations. 3. Concrete washout area to be minimum 50' f rom storm drain inlets and surface waters ie detention and ditches etc). p , 4. Prefabricated washout container or pit equal detail provided may be used if approved by Engineer. 5. Install concrete washout pit at all construction entrances used by concrete trucks. 6. Dimensions may be modified to fit topography. Provide minimum 100 Sf. of surface area level. 7. Locations shown on plans are for illustrative purposes only. Contractor shall determine final number of pits required, and their placement. 8. Inspection: a. Contractor to check all concrete washout facilities daily to determine if they have been filled to 75%capacity, which is when materials need to be removed. b. Both above- and below- ground self -installed washouts should be inspected daily to ensure that plastic linings are intact and sidewalls have not been damaged by construction activities. Contractor to repair plastic lining as needed. c. Prefabricated washout containers should be inspected daily as well to ensure the container is not leaking or nearing 75 percent capacity. d. Inspectors should also note whether the facilities are being used regularly. 6. Material Removal: a. Concrete washouts are designed to promote evaporation where feasible. However, if stored liquids have not evaporated and the washout is nearing capacity, vacuum and dispose of them in an approved manner - check with the local sanitary sewer authority to determine if there are special disposal requirements for concrete wash water. b. Remove liquids or cover the structures before predicted rainstorms to prevent overflows. Companies that offer prefabricated and watertight washout containers generally offer a vacuum service to remove the liquid material. c. Contractor to remove hardened solids or reuse onsite or haul them away for recycling. d. When removing materials from the concrete washout, building a new structure or, if the previous structure is still intact, Contractor is to inspect the structure for signs of weakening or damage and make any necessary repairs. Line the structure with new plastic that is free of holes or tears and replace signage if necessary. It is very important that new plastic is used after every cleaning because pumps and concrete removal equipment can damage the existing liner. 7. At completion of project, washout area to be backf illed and graded to be level with existing grade.. S. General Contractor is to educate concrete subcontractors, post signage indicating the location and designated use of these areas, and provide careful oversight to inspect for evidence of improper dumping of concrete waste and wash water. Contractor should include requirements in contracts with concrete delivery companies that drivers must use designated concrete washout facilities. TOWN of WAKE FOREST, NC Manual of Specifications, Standards and Design A4* CONCRETE WASHOUT Detail« Not To To Scale 9.76 TOWN of WAKE FOREST PIT DETAIL RevisionFeb., 2015 2015 Sheet 4 of 4 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 NCGOI 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. 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 HQ W 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, le) Areas with slopes ditches, perimeter slopes and HOW 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 Permanentstablitzation • 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 waits • Rolled erosion control products with grass seed POLYACRYLAMIDES (PAM5) AND FLOCCULANTS 1. Select flocculants that are appropriate for the soils being exposed during construction, selecting from the NC 0WR List of Approved PAMS/Ffocculants. 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. 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 orwetland. a P Y S. 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. Y. Empty waste containers as needed to prevent overflow. Clean u immediately if PY P P Y containers overflow. S. 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 awayfrom 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. UNSIlE CONCRETE WASHUUT STRUCTURE WITH LINER *-:: pRaar[I� wa i� o auto[ orw•,Ru ffJCTrd • � � e�,r wna� ,[,Pion p elan` = a,a. awQ. ewt HELav GRAHE�4WiIT SS RUCTURL ABINE MAli STRIICTIIRE 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 lace the mixer and associated materials on impervious barrier and within P P 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. S. 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 approximatety 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. '� NORTH CA RO L I NA 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground. �i Environmental Quality NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19 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 decayed shall be noted in the Inspection Record. Frequency Inspect (during normal Inspecalon records must include: business hours) (1)Raingwim daily Daily raining amounts. maintained h If no daily rain gauge observations are made during weekend or Good working holiday periods, and no individual -day rainfall Information Is order vaiiabr% record the almula W rain measurement for those un- attended days fanc this will determine if a site inspection is needed). Days an which no rainfall occurred shall be recorded as The permitme may use another rain -monitoring device approved by the Division. (2) E&SC At least once per 1. Identification of the measures inspected, Measures 7calendardays 2. Date and time ofthe Inspection, and within 24 3. Name of the person performing the inspection, hours of.rain 4. Irdicattan of whether the measures were operating event - 1.0 inch in property, 24hours S. Description of maintenance needs for themeasum, 6. Description, evidence, and date of corrective actions taken. (3) Stormwater At least once per 1. identification of the discharge outfalls inspetted, discharge 7 calendar days 2. Date and time afthe inspection, nutfanslSDCs) and within 24 3. Name of the permn performing the inspection, hngrsnfa ,in 4 Vden[e0f1ndiQtofsnfstorm ater pqIlutpn $4cN a5 oI event- 1.0 inch in sheen, floating orsuspondcd solids or discoloration, 24 hours 5. Indication of visible sediment leaving the site, 6. Desrr t evidence, and date of corrective actions taker. (4) Perimete- of At least once per If wsihEe sedimentation Isfaund outside site limits, Then a record site 7 calendar days ofthe following shall be made: and within 24 1. Actions taken to cleanup or stabilize the sediment that has left hours cf a mlA the site limits, event- l.o inch in 2. Descripibn,evidence, and date orcomeelive actions Yaken, 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 wetbnd has Increased visible sedimentation or a wetlandsomlte 7ca1endardays stream has visibe increased turhidity 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 ofconective actions taken, and accessible) event - 1.0 inch in 2. Records of the required reparts to the appropriate Division 24 hours Regional Dike. per Part I 11, Section C, Item (2i(a) of this permit (6) Ground After each phase 1. The phase of grading (installation of perimeter E&SC stabilization ntg.dieg _ s , clearing and grabbing, instailat,nn of storm measures drainagefacilities, completion at all land -disturbing activity, construction or redovelcpment, permanent ground cover). 2. Documentation that the required ground stabilisation measures have been provided within the required timeframe or an assurance that they will be Provided as as Possible_ NOTE: The rain inspection resets the required 7 calendar day inspection requirement. 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. 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 Requirenni (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 compieted. 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 a-NOI and all inspection records shall be maintained fora period of three years after project completion and made available upon request. (40 CFR 122.411 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 weatherl. Non -surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: (a) The E&SC plan 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 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, le) 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. PART III SELF -INSPECTION, RECORDKEEPING AND REPORTING SECTION C: REPORTING 1. Occurrences that Must be Reported Perri shall report the following occurrences: (a) Visible sediment deposition in a stream orwetland. (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 6.5.143.215,85, (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 o becomes aware of an occurrence that must be reported, he shall contact P p 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) 958-0368. Occurrence Reporting Timeframes [After Discovery) and Other Requirements la) Visible sediment Wirhin 24 hours, an oral or electronic notification. deposition in • Within 7 cafendardays, 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 wa lve the requirement for a written report on a case -by -case basis. • li the stream is named cn the NC 3031d1 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 a state impaired -waters conditions. {bl Oil spills and • Within 24hours, an ora€ or electronic notification. The notification release of shall include information about the date, time, nature, volume and hazardous location Df the spill er release. substances per Item 1(b)-(c) above (c} Anticipated • A report at least ten days before the date of the bypass, ff possible. bypasses (4o CFR The report shall include an evaluation of the anticipated quality and 122.41(m)(M pffpo of the bypass. (d) Unanticipated • Within 24hours, an ora€ or electronic notification. hypasses [40 CFR Within 7 calendar days, a report that includes an evaluation of the 122.41(m)(3)] 1 quality and effect ofthe bypass. (1 Noncompliance liance • Within Z4hours an oral or electronic notification. with the conditions • Within 7 cafendardays, a report that contains a description ofthe 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(1)(7)] prevent reoccurrence of the noncompliance. [40 CFR 12I41(1)(6). • Division staff may waive the requirement for a written report on a case -by -case basis. NCGO1 SELF -INSPECTION, RER CODKEEPING AND REPORTING NORTH CAROLINA L � Environmental Q unlit I EFFECTIVE: 04/01 / 19