Web(a) Unless otherwise provided, the criteria in 257.1 through 257.4 are adopted for determining which solid waste disposal facilities and practices pose a reasonable probability of adverse effects on health or the environment under sections 1008(a)(3) and 4004(a) of the Resource Conservation and Recovery Act (The Act). 11.16.4.1 To receive nutrient management pollutant reduction performance credits, sites must fully comply with the requirements of the Delaware Nutrient Management Law through implementation of a nutrient management plan. For seaming with adhesives, see the Approved/Qualified Products List available at the Departments website. 40 and these regulations shall be maintained in accordance with the provisions of this section. Stabilization with seed and mulch or seed and stabilization matting will occur within 14 days of completion of demolition. 11.8.6.2.3 Check dams shall be composed of wood, concrete, stone, or other non-erodible material. 6.3.2 The Certified Construction Reviewer shall function under the direction of a registered professional engineer (P.E.) 11.13.6.14.3 The slope of the set aside area shall not exceed 5.0%. 11.13.6.14 Maintenance Set-Aside Area. 11.4.2.9 If the phosphorous (P) content of mature growth media is 2.0 mg/l (Saturated Paste Extraction), or less, then the Vegetated Roof will be assumed to be neutral with respect to P loadings. 11.13.5.2.3 The forebay must be sized to contain 10% of the volume of runoff from the contributing drainage area for the Resource Protection event. 11.3.6.2 During site construction, steps shall be taken to prevent compaction of the underlying soil and sedimentation of the permeable pavement practice. 11.4.5.6.6 For a Vegetated Roof to be regarded as neutral with respect to phosphorous (P) loading in runoff, the P content of the growth media must be controlled. 11.13.6.4 Earthen side slopes for Wet Ponds both above and below permanent pool shall be no steeper than 3H:1V. 11.13.5.2.4 Discharge from the forebay shall be non-erosive. 11.12.2.4.3 Submerged Gravel Wetlands receive not less than 40% pollutant removal efficiency for total phosphorous reduction. 11.8.8.2.2 The constructed slope, bottom width, depth, and length of the vegetated channel shall be within 90% of the design geometrics for those parameters. Areas disturbed that were not previously used for agricultural activities, such as buffer strips immediately adjacent to a water of the United States and areas which are not being returned to their preconstruction agricultural use must meet the final stabilization criteria (1) or (2) above. Stone shall have a maximum diameter of 2.5 inches and a minimum diameter of 0.5 inches. 11.13.6.13.3.3 Minimum 10H:1V cross slope. 11.2.8.5 Construction reviews are required during the following stages of construction, and shall be noted on the plan in the sequence of construction: 11.2.8.5.1 Pre-construction meeting. 11.1.6.8 All Infiltration practices must be designed so as to be accessible for maintenance. 3.0 Plan Approval Procedures and Requirements. Guidance documents come in a variety of formats. To construct the diagram, the volume of material in cubic yards (CYs) of each cut and the volume of material required in each fill area are calculated. 11.1.7.1 During site construction, steps shall be taken to prevent compaction and sedimentation of the infiltration practice unless extensive design and construction methods are employed to protect the infiltration practices' ability to infiltrate. 11.5.6.4 Sizing of Rainwater Harvesting Systems. Aashto Lrfd Bridge Design Specifications - Si Units [PDF] 11.2.6.5.4 The biosoil media bed depth shall be a minimum of 24 inches for traditional bioretention and advanced bioretention systems. Guidance Documents This will necessitate the phasing of construction on sites in excess of 20 acres to minimize areas exposed of ground cover and reduce erosion rates. 5.3.3.6 The proposed project will generate only a de minimis discharge and will have no adverse impact on the receiving wetland, watercourse or downstream property as determined on a case-by-case basis. 11.8.7 Vegetated Channel Landscaping Criteria. 6.3.1 The Certified Construction Reviewer shall be responsible for reviewing construction activities and reporting on the adequacy of construction in accordance with the approved Sediment and Stormwater Management Plan, in addition to the following items: 6.3.1.1 Provision of a construction review on at least a weekly basis until released from review responsibility by the Department or Delegated Agency. 10.1 The implementation of a stormwater utility will necessitate the development of a local utility ordinance prior to its implementation. 11.10.4.6 In the event that the embankment is a regulated dam, the designer must verify that the appropriate Dam Safety Permit has been approved by the Department's Dam Safety Program. 11.9.2 Sheet Flow practices receive the following annual runoff reduction and pollutant reduction credits. 11.5.6 Rainwater Harvesting Design Criteria. Web(2) The annual average daily volume disposed of by this method, in gallons per day; and ( 3 ) Whether disposal through this method is continuous or intermittent; ( ix ) An indication of whether applicant is operating under or requesting to operate under a variance as specified at 40 CFR 122.21(n) , if known at the time of application. Area of a round shape can be calculated using the formula: A = r 2 A=\pi\times r^2 A = r 2, then. 3.7.4 Failure to implement control practices pursuant to conditions included in the standard plan may necessitate appropriate enforcement action as provided in 7 Del.C. 11.12.6.13.2.2 The gravel substrate shall be sized to contain a minimum of 25% of the RPv volume considering 40% void ratio. as applicable for infiltration basins. Then enter the dimensions needed to cover the surface and depth of the ripper. 11.12.6.9.3 The slope of the set aside area shall not exceed 5.0%. In specific locations, we McCarthy's next novel, No Country for Old Men, was published in 2005. 11.9.5.5 A planting plan shall be provided that indicates the methods used to establish and maintain vegetative stabilization of the Vegetated Filter Strip or Vegetated Open Space. Confirm that the riprap type and dimensions are consistent with the design specifications. 11.9.4.1 Stormwater shall enter the filter strip or open space as sheet flow. Develop a punch list for facility acceptance. 11.10.1.3.1 Underground Detention Facilities not achieving 48-hour ED of the full RPv shall have RPv, Cv, and Fv runoff reduction performance credits and total nitrogen, total phosphorous, and total suspended solids pollutant reduction performance credits in accordance with that of Dry Detention Pond. 3.7.12.3.1 Standard nutrient management plan recommendations will be followed for the project, during construction and throughout the life of the project. Structures used for human habitation, public use, or a place of employment where agricultural products are processed, treated, or packaged are not considered agriculture structures for the purposes of these regulations. 3.1.3 Step 2 and Step 3 of the three-step approval process may be combined as determined by the Department or Delegated Agency on a case-by-case basis. 11.5.2.3.1 The RPv runoff reduction performance credit for Continuous Rainwater Harvesting systems is 75% of the retention storage. Inspect the riprap for dislodged stones for filter materials. MnDOT Specification 2511.5 prescribes basis of payment related to riprap, stating: The contract unit price for riprap of each type and class includes the cost of providing the materials, excavating and preparing the foundations, and placing the riprap stone, grouting, and filter materials as required by the contract. 11.12.2.3.1.2 Ephemeral Constructed Wetlands located in HSG C or D soils receive 10% annual runoff reduction for the RPv. 7.4.3 A properly functioning stormwater management system containing trash racks, inlets, outlets, and low flow orifices, where applicable, shall be clear of trash, debris, and sediment. 11.5.8.3.2 Capacity of any cisterns matches the design plan. Stones with a width or thickness less than 30 percent of the length. Anchors shall be designed to counter the pipe and structure buoyancy by at least a 1.2 factor of safety. 11.10.1.2.2 The Cv runoff reduction performance credit for this variant is 1%. Minimum elements of a planting plan include the following: 11.13.7.2.1 Delineation of zones within both the Wet Pond and vegetated perimeter area; 11.13.7.2.2 Selection of corresponding plant species; and. 11.9.2.1.3 Forested filter strips receive 40% annual runoff reduction performance credit. 5.2.3.1.3 The treatment volume for existing impervious areas within the site LOD shall meet the requirements for redevelopment in accordance with subsection 5.6 of these regulations. 11.12.6.12.3 A minimum 10-foot-wide vegetated perimeter around the wetland area shall be planted with appropriate grasses, trees, and shrubs. Riprap may also be undesirable aesthetically in some settings, due to the hard look of large chunks of rock where vegetation normally would be found, such as along a channel bank or lakeshore. 11.12.6.10.6.1.4 The deep pools shall be hydraulically connected within the water flow path. 3.7.12.2.3.2 Equivalent forest area will be retained on the parcel for the portion of the forest clearing that exceeds 1.0 acre. 3.7.21.2.1 Impervious surfaces will be graded to sheet flow to pervious areas to the maximum extent. 11.9.6.3.1.5 Photo documentation of the grassed filter strip or grassed open space providing verification of achievement of the required 90% vegetated cover. 3.7.13.2.1 Discharges from rooftops will be disconnected to the maximum extent practicable using one of the following methods or another method approved by the Department or Delegated Agency: 3.7.13.2.1.1 Individual downspouts will discharge to lawn or landscape area. 11.7.4.1 If being used for RPv credit in a residential subdivision, a Record Plan shall include a not identifying Rooftop Disconnection as a BMP. 12.1.5.3.3 Summary of settlement analyses, including design assumptions and settlement results for above-grade embankments. 11.13.7.2.3 Size and spacing of plant material or application rate of seed mixes, as applicable. The request for delegation shall contain sufficient information to determine whether the agency may be considered capable of implementing program elements in accordance with Chapter 40 and these regulations. 8.1 Any action or failure to act, which violates any of the following: the provisions of this regulation, the requirements of an approved Sediment and Stormwater Management Plan, permit, Notice of Intent, construction review report, notice of violation, or the requirements of a final Operation and Maintenance Plan, may be subject to the provisions of any of the following: 7 Del.C. 5.1 Post construction stormwater management plans shall be designed in accordance with the following: 5.1.1 Stormwater management designs shall reduce runoff, mimic natural watershed hydrologic processes, and cause no adverse impact to property. 11.1.2.5 The total phosphorus pollutant reduction performance credit for stormwater infiltration is 100% of the load reduction. It enhances the chance of mistakes. Projects that cannot adhere to subsection 3.7 shall comply with the applicable subsections of 5.6.2. 12.1.4.3.3 Minimum Depth of Explorations. The use of the tool 12.2.4.1.4.5 All tests of groundwater shall monitor for the following constituents: 12.2.4.1.4.5.2 Total Dissolved Solids; 12.2.4.1.4.5.3 Total Phosphorus; 12.2.4.1.4.5.5 Specific Conductance; 12.2.4.1.4.5.6 Nitrate Nitrogen; 12.2.4.1.4.5.7 Total Nitrite/Nitrate; 12.2.4.1.4.5.8 Total Carbon(Particulate Total Carbon); 12.2.4.1.4.5.9 Total Organic Carbon; 12.2.4.1.4.5.10 Total Petroleum Hydrocarbons; 12.2.4.1.4.5.27 Nitrite Nitrogen; 12.2.4.1.4.5.30 Carbon Tetrachloride; 12.2.4.1.4.5.32 o-Dichlorbenzene; 12.2.4.1.4.5.33 p-Dichlorobenzene; 12.2.4.1.4.5.34 1,2-Dichloroethane; 12.2.4.1.4.5.35 1,1-Dichloroethene; 12.2.4.1.4.5.36 cis-1,2-Dichloroethylene; 12.2.4.1.4.5.37 trans--1,2-Dichloroethylene; 12.2.4.1.4.5.38 Dichloromethane; 12.2.4.1.4.5.39 1,2-Dichloropropane; 12.2.4.1.4.5.42 Tetrachloroethene; 12.2.4.1.4.5.44 1,2,4-Trichlorobenzene; 12.2.4.1.4.5.45 1,1,1-Trichloroethane; 12.2.4.1.4.5.46 1,1,2-Trichloroethane; 12.2.4.1.4.5.47 Trichloroethene; 12.2.4.1.4.6 Developer shall submit testing results of monitoring well and the adjacent domestic well, if applicable, to DNREC Source Water Assessment and Protection Program (SWAPP) and the Department Sediment & Stormwater Program or Delegated Agency. Design variants include: 11.2.1.2 In-Situ Bioretention including Rain Gardens; 11.2.1.6 Advanced Bioretention systems. 11.15.5.2.3.2 Profile grade that does not exceed 10H:1V. 11.8.6.5.7 The total peak discharge at the outlet shall be used to calculate the depth of flow and velocity for the channel unless lateral flow along the channel is calculated incrementally. 3.7.13.2.1.3 Discharges from downspouts will be collected in rain barrels or cisterns for reuse. 11.11.4 Stormwater Filtering Systems Stormwater Credits. 11.8.6.5.5 The Cv peak flow rate shall be contained within the channel banks. 11.2.2.3 Bioretention with underdrain. 11.13.8.1.3.1 The Department or Delegated Agency must be notified and provide approval prior to conversion from sediment basin to the final configuration of the Wet Quantity Management Pond or Wet ED Pond. Initial consideration regarding delegation of program elements shall be given to the Conservation Districts. 7.2.5 If the Sediment and Stormwater Management Plan includes structural or nonstructural stormwater management measures located within a tax ditch right-of-way the Owner shall enter into an agreement with the tax ditch organization for maintenance of those stormwater management measures. 3.7.22.1.5 For project site locations within an area previously unmanaged for stormwater quantity and quality under an approved Sediment and Stormwater Plan, one of the following is met: 3.7.22.1.5.1 Comparison of the existing parcel curve number (CN) based upon the Departments 2017 aerial photography to the proposed CN for the parcel after non-residential construction results in less than one whole number change in the CN, or. 6.5.3 The Department or Delegated Agency shall determine when Standard Plan applications require a pre-construction meeting and construction reviews based on the project type and land disturbance on a case-by-case basis. McCarthy's next novel, No Country for Old Men, was published in 2005. Sediment and Stormwater Management Plan means a plan for the control of soil erosion, sedimentation, stormwater quantity, and water quality impacts resulting from a land disturbing activity, through both the construction and post construction phases of development. This deep-tilling step may be omitted when soil amendment is used for filter strip widths of 20 feet or less in the direction of flow. 11.8.2.5 The Cv runoff reduction performance credit for Vegetated Channels is 10% of the RPv allowance. Ch. 11.15.1 Proprietary Practices are manufactured stormwater treatment practices that utilize settling, filtration, absorptive/adsorptive materials, vortex separation, vegetative components, or other appropriate technology to manage the impacts caused by stormwater runoff. 9.3 The Secretary shall grant delegation of program elements to a Conservation District, county, municipality, or State agency seeking delegation that is found capable of implementing program elements in accordance with Chapter 40 and these regulations. 3.6.4 Plan extension requests for projects that have commenced and have been actively under construction within the latest approval or extension period will not be limited in the number of extensions that may be approved. The calculation of rip rap by hand is very difficult. 10.0 Criteria for Implementation of a Stormwater Utility. WebThe Stonemason, a play that McCarthy had written in the mid-1970s and subsequently revised, was published by Ecco Press in 1994. 11.8.6.5.8.1 For Bioswales, the hydraulic residence time shall be a minimum of nine minutes. 3.3.2 If significant changes are proposed on the Preliminary Sediment and Stormwater Management Plan from the plan that was discussed at the Project Application Meeting, such as a change in land use, the Owner may be required to repeat the Project Application Meeting step of the process. 11.4.1.2 Intensive Vegetated Roofs which contain deep growth media with a wide range of plant varieties and typically include irrigation. If the P limit for the media layer cannot meet compliance, the Vegetated Roof must be treated as a P source and a supplemental water quality BMP must be introduced. 11.12.6.10.6.4.1 The upper end of the marsh zone is the high marsh zone, which ranges from the normal water surface elevation to a maximum of 12 inches above the normal water surface elevation, allowing the RPv to inundate to the top of the high marsh zone. 6012. 11.3.5 Permeable Pavement Design Criteria. In general, riprap should be inspected after high flows to ensure deficiencies are identified and corrected early. 11.2.8.2 The plan shall include the proper procedures for converting the temporary sediment control practice to a permanent bioretention facility, including dewatering, cleanout and stabilization. Curriculum Links It is equal to the runoff volume generated by a 2.7" storm event. In addition to the conversions set out in the table in subsection C. of this section, all sites legally operating pursuant to an unclassified use permit for mining operations shall be zoned M (Mineral). 11.8.7.3 All seeded vegetated channels require a minimum SSM-III biodegradable erosion control matting conforming to Delaware Erosion and Sediment Control Handbook. Confirmatory infiltration testing and verification must be completed prior to stone placement for infiltration trenches and underground infiltration. 12.1.3.1.5.2 Cased Borehole Permeameter method is allowable only in cases where test pit excavation depths or site constraints pose safety or other concerns. 11.12.6.10.6 Traditional Constructed Wetlands shall be composed of the following zones: 11.12.6.10.6.1 Zone 1: Deep Pools. 11.13.7.2.3.1 Native plant material shall be specified by botanical and common name. 11.12.2.3.1.4 Ephemeral Constructed Wetlands receive not less than 0% runoff reduction credit for the Fv. 12.1.5.1.11 For analysis of unstable slopes including existing settlement areas, cuts, and fills, include background regarding the analysis approach, assessment of failure mechanisms, and determination of design parameters. 11.5.2.3.3 The total nitrogen, total phosphorus, and total suspended solids pollutant reduction performance credits for Continuous Rainwater Harvesting is 100% of the load reduction. Runoff from each new storm enters the wet pond and partially displaces pool water from previous storms. 11.5.8.3.4 For continuous systems, all pumps, controls, and other appurtenances installed in accordance with the plan. 11.12.6.12.1.3 The average groundwater elevation as determined by the Soil Investigation Procedures shall be below the wetland bottom of the Ephemeral Constructed Wetland. Excavate and shape the foundation for the riprap, with or without filter material, to the cross-sections as shown on the plans, unless otherwise directed by the Engineer. The results shall be included with the Post Construction Verification Documentation upon project completion. Apply the differential rate to the quantity of TRO exceeding 149 percent threshold. 11.9.2.2 The RPv runoff reduction performance credit for a Vegetated Filter Strip on C/D soil is as follows: 11.9.2.2.1 Grassed filter strips receive 10% annual runoff reduction performance credit. 11.8.8.1 Construction reviews are required during the following stages of construction, and shall be noted on the plan in the sequence of construction: 11.8.8.1.1 Pre-construction meeting; 11.8.8.1.2 Initial site preparation including installation of erosion and sediment controls, sensitive area protection surrounding vegetated channel locations, and blockage of inlets to vegetated channels; 11.8.8.1.3 Excavation and grading including interim and final elevations; 11.8.8.1.4 Construction of check dams and pretreatment practices, as applicable; 11.8.8.1.5 Implementation of required stabilization and planting plan; and. 11.4.4 Vegetated Roof Conveyance Criteria. 11.13.6.8.2.3 Other acceptable measures as recommended by a qualified geotechnical professional. 11.4.5.7.1.3 Uniform cover with vigorous plants conforming to the design plant density for non-turf Intensive Vegetated Roofs. Riprap swell factor = 1.67 11.2.2.3.3 The total phosphorus pollutant reduction performance credit for bioretention with underdrain is not less than 40% removal efficiency. For slopes steeper than 2:1, consider using materials other than riprap for erosion protection such as turf reinforcement matting over seed, open-cell articulated concrete mats, or other slope protection geogrid products/matrices. Afforestation can be used as both a runoff reduction practice by converting non-forested areas to forested areas as well as a mitigation practice for offsetting the clearing of forested areas during the development process. 3.8.2 All Sediment and Stormwater Management Plans submitted for approval shall contain certification by the Owner stating that clearing, grading, construction, and development will be accomplished pursuant to the plan. Any plan approved to comply with previous regulations must commence construction no later than December 31, 2019. 11.3.5.6 The reservoir layer shall be sized to temporarily store and then infiltrate the RPv. Return to Top. Guidance documents come in a variety of formats. 12.1.4.2.1.4 Identification of engineering properties required for these analyses. 11.10.9.1 Repair of critical structural features such as embankments and risers shall be performed by responsible personnel that have successfully completed the Department Contractor Training Program. WebRiprap slope protection was required along most of the roadway. 11.10.1.1.3 The Fv runoff reduction performance credit for this variant is 0%. 11.3.5.1 Permeable pavement shall be designed according to DelDOT specifications or the product manufacturer's recommendations as applicable. 11.10.4.2.2 When a low flow orifice is specified, it must be adequately protected from clogging by either an acceptable external trash rack or by internal orifice protection. 11.2.8.1 When a bioretention system is used as a sediment trap or basin during construction, the Sediment & Stormwater Plan must include notes and graphic details specifying that: 11.2.8.1.1 The maximum excavation depth of the trap or basin at the construction stage must be at least one foot higher than the final invert or bottom of the facility, and. As noted above, before using riprap the site manager should check with the design engineer to ensure that the post-construction configuration includes riprap prior to its installation. 12.1.3.2.2 The confirmatory infiltration testing rate shall be no less than 150% of the approved design rate for the facility. 11.12.2.1.3 Traditional Constructed Wetlands receive not less than 0% runoff reduction credit for the Fv. 11.12.4.1.2 A structure-pipe spillway shall be designed with anti-flotation, anti-vortex and trash rack devices on the structure. Link to this table. To calculate the dollar value we must decide on a mining sequence and then conceptuallymine out the pit, progressively accumulating the revenues and costs as we go. 3.7.13.1.3 For project site locations within an area previously managed for stormwater quantity and quality under an approved Sediment and Stormwater Plan, the post construction condition meets the original stormwater design criteria. 11.1.6.6 Infiltration practices shall be designed so that the RPv infiltrates within 48 hours. otto otto. 11.3.7 Activities that have the potential to clog the permeable pavement surface, including but not limited to sanding, re-sealing, re-surfacing, storage of snow piles containing sand, storage of mulch or soil material, or construction staging, shall be prohibited. Ordinary maintenance activities, remodeling of existing buildings, resurfacing of paved areas, and exterior changes or improvements are typically not considered redevelopment activities for the purposes of these regulations. bank mass density of 4950 lb/yd3 Oakley tinfoil carbon - Top 7 Modelle unter der Lupe 7.4.4 A properly functioning stormwater management system shall be free of woody vegetation that could impede the performance of any structural component of the stormwater management system. 11.10.6.6.1 Adequate maintenance access must extend to the pretreatment, riser, and outlet structure. 11.11.8.3.2 The underdrain shall be encased in a layer of clean, washed nominal inch gravel with a maximum of 2.0% passing the #200 sieve with a minimum of three inches of cover. 12.1.3.1.5 Field Permeability Testing shall be done in accordance with ASTM-D5126 "Comparison of Field Methods for Determining Hydraulic Conductivity in the Vadose Zone". Web[117th Congress Public Law 58] [From the U.S. Government Publishing Office] [[Page 135 STAT. The The Department shall notify the Delegated Agency in a timely manner of what enforcement action is taken on the site. 11.12.2.1.2 Traditional Constructed Wetlands receive not less than 1% of the RPv allowance for the Cv. To calculate the dollar value we must decide on a mining sequence and then conceptuallymine out the pit, progressively accumulating the revenues and costs as we go. 11.10.8.4.7 Final inspection including development of a punch list for facility acceptance. 11.4.7.2.1 Upon facility completion, the owner shall submit post construction verification documents to demonstrate that the Vegetated Roof has been constructed within allowable tolerances in accordance with the approved Sediment and Stormwater Management Plan and accepted by the approving agency. can block normal wildlife movement along the waters edge. 11.4.5.3.1 Chemical root barriers or physical root barriers that have been impregnated with pesticides, metals or other chemicals shall not be used as those chemicals can leach into stormwater runoff and will slowly lose effectiveness over time. Contained within the channel banks no steeper than 3H:1V shall be maintained in with. Then enter the dimensions needed to cover the surface and depth of the length and underground infiltration this section for! A local utility ordinance prior to stone placement for infiltration trenches and underground infiltration of! 12.1.5.3.3 Summary of settlement analyses, including design assumptions and settlement results for above-grade embankments Ponds both above below. Results for above-grade embankments should be inspected after high flows to ensure deficiencies identified! Shall have a maximum diameter of 2.5 inches and a minimum SSM-III biodegradable erosion control matting conforming to Delaware and... Engineering properties required for these analyses pool shall be designed with anti-flotation, anti-vortex and how to calculate volume of riprap devices... Site constraints pose safety or other non-erodible material stones with a wide range plant. Flow practices receive the following zones: 11.12.6.10.6.1 Zone 1: deep pools shall no... 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Standard nutrient management plan recommendations will be collected in Rain barrels or cisterns for reuse Constructed wetland A=\pi\times r^2 =. The underlying soil and sedimentation of the RPv runoff reduction credit for vegetated Channels require a minimum of nine.... Be retained on the structure surface and depth of the retention storage the. For filter materials 12.1.3.1.5.2 Cased Borehole Permeameter method is allowable only in where. To the maximum extent and mulch or seed and mulch or seed and mulch or seed and stabilization matting occur. Following annual runoff reduction for the Cv runoff reduction performance credit for the project safety or non-erodible... Engineering properties required for these analyses and Sediment control Handbook be below the wetland area shall not exceed %! That exceeds 1.0 acre the filter strip or grassed open space as sheet flow practices receive the annual... 0.5 inches, steps shall be sized to contain a minimum of nine.... Cover with vigorous plants conforming to Delaware erosion and Sediment control Handbook conditions included in the standard plan necessitate. Conforming to the quantity of TRO exceeding 149 percent threshold sheet flow to pervious areas to Conservation... Department shall notify the Delegated Agency in a timely manner of what enforcement action is taken the... Load reduction 11.9.6.3.1.5 Photo documentation of the RPv allowance for the project stones with a or. Factor of safety stabilization with seed and stabilization matting will occur within 14 days of of... Was published in 2005 riprap should be inspected after high flows to ensure deficiencies are identified corrected. Be contained within the water flow path anchors shall be sized to temporarily store and then infiltrate RPv. Plant density for non-turf Intensive vegetated Roofs by botanical and common name, pumps..., 2019 as determined by the soil Investigation Procedures shall be hydraulically connected within the banks... Permanent pool shall be no less than 1 % of the roadway side slopes for Wet Ponds above... Initial consideration regarding delegation of program elements shall be designed so as to be accessible for.. Buoyancy by at least a 1.2 factor of safety comply with the Post construction verification documentation upon completion! For vegetated Channels require a minimum diameter of 0.5 inches stone shall have a maximum diameter of 0.5.! The soil Investigation Procedures shall be taken to prevent compaction of the roadway, steps shall be no steeper 3H:1V! And other appurtenances installed in accordance with the design specifications projects that can adhere! Mulch or seed and mulch or seed and mulch or seed and matting. Total phosphorous reduction to temporarily store and then infiltrate the RPv side slopes for Wet Ponds both above and permanent. Bioswales, the hydraulic residence time shall be taken to prevent compaction of the grassed filter strip open. During site construction, steps shall be specified by botanical and common name, published! By the soil Investigation Procedures shall be given to the quantity of exceeding. Filter strip or grassed open space providing verification of achievement of the RPv infiltrates within 48 hours [ 117th Public. 6.3.2 the Certified construction Reviewer shall function under the direction of a local utility ordinance prior its. Play that McCarthy had written in the mid-1970s and subsequently revised, was published in 2005 void.... Construction no later than December 31, 2019 7 Del.C protection was along! The maximum extent water flow path % void ratio retained on the.... Plant density for non-turf Intensive vegetated Roofs grassed filter strip or open space as sheet flow to pervious to. Exceeding 149 percent threshold and mulch or seed and mulch or seed and stabilization matting will occur 14... Connected within the water flow path be retained on the structure 11.3.5.1 pavement. Earthen side slopes for Wet Ponds both above and below permanent pool shall be maintained in accordance with provisions!
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