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Home My WebLink AboutSW5230802_Plansheet - Other_20240612 (9) F0001- W GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH EQUIPMENT AND VEHICLE MAINTENANCE ONSITE CONCRETE WASHOUT THE NCGO1 CONSTRUCTION GENERAL PERMIT STRUCTURE WITH LINER W 1. Maintain vehicles and equipment to prevent discharge of fluids. Implementing the details and specifications on this plan sheet will result in the construction 2. Provide drip pans under any stored equipment. s ' activity being considered compliant with the Ground Stabilization and Materials Handling "'�' PLAS�TIc 3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the Id : <TM sections ermittee shall complyO Cvvith thetEro ionGeneral and Sediment l � eColnt oons f Ian approved and � respectively).Abe the The project. ELT '��"" ` /� ppY N t� arrr 4. Collect all spent fluids store in separate containers and properly dispose as �� .� delegated authority having jurisdiction. All details and specifications shown on this sheet r `' hazardous waste (recycle when possible). =❑`; . �,� mod= o� Q �� I may not apply depending on site conditions and the delegated authority having jurisdiction. �: ��;•. y = o o Y IIA�ISE7 SIQIAff SECTial A-A M STAPLE! L�IITnI SEiEAlOss7 ZM J = Q U 5. Remove leaking vehicles and construction equipment from service until the problem �'; _ o 0 0 SECTION E: GROUND STABILIZATION has been corrected. ALU "``°�'= E" °'� Y = :�. �� Z rm" �srrma s xE asp Hsu F.,Fc�+ +�r us d F.ne cmelmm V#XHW SINLruaE8 SH&L siSUcn�Es aw L>E IM7RA9EL X MADRAMM WHO 7W Lm ANIM Wn 7=E A�>� : Q = =�0 °° 0-3 aoLfl PEApEs Tex ME s71p1C71A1E5 CAPAc"M PAS y=OWMTE �- '�d r ti O °°° 6. Bring used fuels lubricants, coolants, hydraulic fluids and other petroleum products CAPAU". ,a. ,+,�,A„ ,,, ti Required Ground Stabilization Timeframes ELM ,E, 5,�,M,EM TO X � >e � rf°ti' •' ' ''¢o��` °°°°° ° ° P to a recycling or disposal center that handles these materials. Wn"SOAaE=nlaa VEL ,�WASHM t Stabilize within this ' """ Site Area Description many calendar Timeframe variations BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE W416W STRUCTURE days after ceasing LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE land disturbance 1. Never bury or burn waste. Place litter and debris in approved waste containers. (a) Perimeter dikes, 2. Provide a sufficient number and size of waste containers (e.g dumpster, trash CONCRETE WASHOUTS swales, ditches, and 7 None receptacle) on site to contain construction and domestic wastes. 1. Do not discharge concrete or cement slurry from the site. perimeter slopes 3. Locate waste containers at least 50 feet away from storm drain inlets and surface 2. Dispose of, or recycle settled, hardened concrete residue in accordance with local (b) High Quality Water 7 None waters unless no other alternatives are reasonably available. and state solid waste regulations and at an approved facility. w {HQW} Zones 4. Locate waste containers on areas that do not receive substantial amounts of runoff 3. Manage washout from mortar mixers in accordance with the above item and in from upland areas and does not drain directly to a storm drain, stream or wetland. addition lace the mixer and associated materials on impervious barrier and within Q Z Q (c) Slopes steeper than If slopes are 10 or less in length and are p p Z � � 5. Cover waste containers at the end of each workday and before storm events or lot perimeter silt fence. 3:1 7 not steeper than 2:1, 14 days are Y p Q - w provide secondary containment. Repair or replace damaged waste containers. 4. Install temporary concrete washouts per local requirements, where applicable. If an � Q allowed p Y p q pp Q Q -7 days for slopes greater than 50' in 6. Anchor all lightweight items in waste containers during times of high winds. alternate method or product is to be used, contact your approval authority for Cr J length and with slopes steeper than 4:1 7. Empty waste containers as needed to prevent overflow. Clean up immediately if review and approval. If local standard details are not available, use one of the two Z C containers overflow. types of temporary concrete washouts provided on this detail. Z Z (d) Slopes 3:1 to 4:1 14 ditches, perimeter slopes and HQW 8. Dispose waste off-site at an approved disposal facility. 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk Q Q O Zones 9. On business days, clean up and dispose of waste in designated waste containers. sections. Stormwater accumulated within the washout may not be pumped into or U -10 days for Falls Lake Watershed discharged to the storm drain system or receiving surface waters. Liquid waste must -7 days for perimeter dikes, swales, PAINT AND OTHER LIQUID WASTE be pumped out and removed from project. ditches, perimeter slopes and HQW Zones 1. D❑ not dump paint and other liquid waste into storm drains, streams or wetlands. 6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it (e) Areas with slopes can be shown that no ether alternatives are reasonably available. At a minimum flatter than 4:1 14 -10 days for Falls Lake Watershed unless 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface � Z there is zero slope waters unless no other alternatives are reasonably available. install protection of storm drain inlet(s) closest to the washout which could receive w spills or overflow. 0 Note: After the permanent cessation of construction activities, an areas with tem orar 3. Contain liquid wastes in a controlled area. O U p Y p Y 7. Locate washouts in an easily accessible area, on level ground and install a stone � ground stabilization shall be converted to permanent ground stabilization as soon as 4. Containment must be labeled, sized and placed appropriately for the needs of site. entrance pad in front of the washout. Additional controls may be required by the Q w � practicable but in no case longer than 90 calendar days after the last land disturbing 5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from approving authority. °° Z > 8. Install activity. Temporary ground stabilization shall be maintained in a manner to render the construction sites. at least one sign directing concrete trucks to the washout within the project Q III surface stable against accelerated erosion until permanent ground stabilization is achieved. limits. Post signage on the washout itself to identify this location. = < C) w PORTABLE TOILETS o w Z GROUND STABILIZATION SPECIFICATION 9. Remove leavings from the washout when at approximately 75/ capacity to limit Q D �n Q 1. Install portable toilets on level ground, at least 50 feet away from storm drains, overflow events. Replace the tarp, sand bags or other temporary structural = _ Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the streams or wetlands unless there is no alternative reasonably available. If 50 foot � 0 � Y components when no longer functional. When utilizing alternative or proprietary = Lw techniques in the table below: offset is not attainable, provide relocation of portable toilet behind silt fence or lace F Q Q p p p products, follow manufacturer s instructions. = Z � Temporary Stabilization Permanent Stabilization on a gravel pad and surround with sand bags. 10. At the completion of the concrete work, remove remaining leavings and dispose of U 3�: U + Temporary grass seed covered with straw or * Permanent grass seed covered with straw or 2. Provide staking or anchoring of portable toilets during periods of high winds or in high in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance � � other mulches and tackifiers other mulches and tackifiers foot traffic areas. ~ caused by removal of washout. Q + Hydroseeding * eotextile fabrics such as permanent soil 3. Monitor portable toilets for leaking and properly dispose of any leaked material. * Rolled erosion control products with or reinforcement matting Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace Z without temporary grass seed + Hydroseeding with properly operating unit. LLI + Appropriately applied straw or other mulch + Shrubs or other permanent plantings covered HERBICIDES, PESTICIDES AND RODENTICIDES � + Plastic sheetingwith mulch + Uniform and evenly distributed ground cover EARTHEN STOCKPILE MANAGEMENT 1. Store and apply herbicides, pesticides and rodenticides in accordance with label Z Z N restrictions. 0 v sufficient to restrain erosion 1. Show stockpile locations on plans. Locate earthen-material stockpile areas at least Q � Z 2. Store herbicides, pesticides and rodenticides in their original containers with the e structural methods such as concrete, asphalt or 50 feet away from storm drain inlets, sediment basins, perimeter sediment controls '� o label, which lists directions for use, ingredients and first aid steps in case of o 00 a� ct retaining walls and surface waters unless it can be shown no other alternatives are reasonably > 0) accidental poisoning. Z o N + Rolled erosion control products with grass seed available. 3. D❑ not store herbicides, pesticides and rodenticides in areas where flooding is 0 2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of LLJ I �' possible or where they may spill or leak into wells, stormwater drains ground water U a) ,� •� POLYACRYLAMIDES (PAMS) AND FLOCCULANTS five feet from the toe of stockpile. -0 U 00 or surface water. If a spill occurs, clean area immediately. � z � � � 1. Select flocculants that are appropriate for the soils being exposed during 3. Provide stable stone access point when feasible. ct W 4. D❑ not stockpile these materials onsite. U construction, selecting from the NC DWR List of Approved PAMS/Flocculants. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance �¢, ,� ¢ N o w 2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures. with the approved plan and any additional requirements. Soil stabilization is defined U Z o U � o o J 3. Apply flocculants at the concentrations specified in the NC DWR List of Approved as vegetative physical or chemical coverage techniques that will restrain accelerated Z W 0 7� N ' HAZARDOUS AND TOXIC WASTE ^ PAMS/Flocculants and in accordance with the manufacturer's instructions. erosion on disturbed soils for temporary or permanent control needs. U 4. Provide ponding area for containment of treated Stormwater before discharging 1. Create designated hazardous waste collective areas on-site. W � offsite. . ��--•��--�.; 2. Place hazardous waste containers under cover or in secondary containment. W � 5. Store flocculants in leak- roof containers that are ke t under storm-resistant cover }.r am ; NORTH AR LI NA 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground. Z � p p '. . Environmental Qua lity lrt � or surrounded by secondary containment structures. U W Q a C3 EFFECTIVE : �41� 1119NCGO I GROUND STABILIZATION AND MATERIALS HANDLING w � Q � o C/