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HomeMy WebLinkAbout2019-572-E Planning - Wellsmont Landscaping Lake Orange fence stump removal DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 [Departmental Use Only] TITLE FY19-20_Fence-Stump FY 19-20 ORANGE COUNTY CONTRACT UNDER$5,000.00 NORTH CAROLINA THIS AGREEMENT, made and entered into this 23rd day of August, 2019, ("Effective Date") by and between Orange County, North Carolina, a body politic and corporate organized under the laws of the State of North Carolina, (the "County"), party of the first part; and Douglas P. Malinowski (the "Provider"), party of the second part; WITNESSETH: For the purpose and subject to the terms and conditions hereinafter set forth, the County hereby contracts for the services of the Provider, and the Provider agrees to provide the following services to the County in accordance with the terms of this Agreement,time being of the essence: The services and/or materials and/or construction (hereinafter referred to collectively as "Services") to be furnished under this Agreement are as follows: 1) For the entire extent of the area depicted in WHITE hatching and labeled as "Limits of Stump Removal' on Attachment A, Provider shall cut and grind existing stumps/shrubs and existing uncut trees to flush with existing grade. All trimmings shall be chipped and disposed of within the footprint of the stump removal areas. Install permanent seeding on denuded areas based on in-field direction by the County. 2) For the 60-ft x 10-ft (600 square foot) area depicted in YELLOW hatching and labeled on Attachment A, install heavey duty erosion control blanketing and permanent seeding installed per NCDEQ standards. Erosion control blanketing shall be North American Green RollMax BioNet C70OBN woven biodegradable coconut fiber matrix erosion control blanket, or approved equal. 3) Remove approximately 670 LF of existing 5-ft tall chain link fence fabric, top rails, bottom tension wire, and all associated connection hardware as depicted on Attachment A, remove and legally dispose off site. This work shall include hand trimming/cutting all existing stumps/shrubs that have grown into the existing chain link fence fabric. The existing fence posts shall remain in place. Provider shall ensure that existing fence posts and associated fence post foundations are not damaged or compromised during the chain link fence removal process. See Attachment B for detailed quote. See Attachment C for NCDEQ erosion control blanket installation requirements. See Attachment D for North American Green RollMax BioNet C70OBN erosion control blanket specifications. See Attachment E for NCDEQ permanent seeding application requirements. This work must be completed no later than September 30, 2019. Work completion date is subject to modification upon 15 days advanced written notice to Provider by County. The term of this agreement rendered shall be from August 23,2019 to September 30,2019. Provider represents and agrees that Provider is qualified to perform and fully capable of performing and providing the services required or necessary under this Agreement in a fully competent, professional and timely manner to the satisfaction of the County. Provider shall be responsible for all errors or omissions, in the performance of the Agreement. Provider shall correct any and all errors, omissions, discrepancies, ambiguities, mistakes or conflicts at no additional cost to the County. Provider agrees that Provider shall not sub-contract any of the services to be provided in this Agreement, nor shall Provider assign any right or responsibility granted or required by this Agreement,without the prior written approval of the County. SPECIFIC TERMS 1. Payment: The County agrees to pay at the rates specified for Services satisfactorily performed in accord with this Agreement. The amount to be paid by the County shall not exceed THREE THOUSAND ONE HUNDRED TWENTY FIVE DOLLARS, ($3,125.00). Payment shall be made within Revised 12/18 1 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 thirty (30) days of an invoice properly submitted to County. Should Provider fail to perform its duties under the terms of this Agreement, County may,without fault or penalty,withhold any payment associated with the work to be performed until such time as said work is completed. 2. Non—waiver: Failure by County at any time to require the performance by Provider of any of the provisions hereof shall in no way waive or affect the County's right hereunder to enforce the same,nor shall any waiver by the County of any breach be held to be a waiver of any succeeding breach or a waiver of this Non-Waiver Clause. 3. Independent Contractor: The Provider shall operate as an independent contractor, and the County shall not be responsible for any of the Provider's acts or omissions. The Provider shall not be treated as an employee with respect to the Services performed hereunder for federal or state tax, unemployment or workers' compensation purposes. The Provider understands that neither federal, nor state, nor payroll tax of any kind shall be withheld or paid by the County on behalf of the Provider or the employees of the Provider. 4. Insurance: Provider shall obtain, at its sole expense, Commercial General Liability Insurance, Automobile Insurance, Workers' Compensation Insurance, and any additional insurance as may be required by County's Risk Manager as such insurance requirements are described in the Orange County Risk Transfer Policy and Orange County Minimum Insurance Coverage Requirements (each document is incorporated herein by reference and may be viewed at http://www.orangecountync.gov/departments/purchasing division/contracts.php). If County's Risk Manager determines additional insurance coverage is required such additional insurance shall be designated here N/A (if no additional insurance required mark N/A as being not applicable). Provider shall not commence work until such insurance is in effect and certification thereof has been received by the County's Risk Manager. 5. Indemni : The Provider agrees, without limitation, to defend, indemnify, and hold harmless Orange County from all losses, liabilities, claims, demands, suits, costs, damages or expenses (including reasonable attorney's fees) arising from bodily injury, including death,to any person or persons or damage to or destruction of any property caused in whole or in part by any negligent or intentional act or omission on the part of the Provider in carrying out Provider's duties and obligations related to the Services to be provided in this Agreement. 6. Termination: This Agreement may be terminated at any time by mutual written agreement of the parties or by the County upon written notice to the Provider. County may suspend this Agreement upon reasonable notice to Provider. 7. Entire Agreement and Signatures: The parties have read this Agreement and agree to be bound by all of its terms, and further agree that it constitutes the complete and exclusive statement of the Agreement between the parties unless and until modified in writing and signed by the parties. Modifications may be evidenced by telefacsimile signature. This Agreement together with any amendments or modifications may be executed electronically. All electronic signatures affixed hereto evidence the consent of the Parties to utilize electronic signatures and the intent of the parties to comply with Article 11A and Article 40 of North Carolina General Statute Chapter 66. 8. Governing Law and Priority Both parties agree that this Agreement shall be governed by the laws of the State of North Carolina and Orange County. Provider shall at all times remain in compliance with all applicable local, state, and federal laws, rules, and regulations including but not limited to all state and federal anti-discrimination laws, policies, rules, and regulations and the Orange County Non- Discrimination Policy and Orange County Living Wage Policy (each policy is incorporated herein by reference and may be viewed at http://www.oran e�ync. og v/departments/purchasing_division/contracts.php.). Any violation of this Revised 12/18 2 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 requirement is a breach of this Agreement and County may immediately terminate this Agreement without further obligation on the part of the County. This paragraph is not intended to limit and does not limit the definition of breach to discrimination. By executing this Agreement Provider certifies that Provider has not been identified, and has not utilized the services of any agent or subcontractor identified, on the list created by the State Treasurer pursuant to G.S. 147-86.58. By executing this Agreement Provider certifies that Provider has not been identified, and has not utilized the services of any agent or subcontractor identified, on the list created by the State Treasurer pursuant to G.S. 147-86.81. By executing this Agreement Provider affirms Provider is and shall remain in compliance with Article 2 of Chapter 64 of the North Carolina General Statutes. In determining the basic services to be provided, should any documents be referenced in or attached to this Agreement, the terms herein shall have priority in any conflict between the terms of referenced documents and the terms of this Agreement. 9. Dispute Resolution: Neither party may initiate binding arbitration. Any disputes shall be resolved by nonbinding mediation. If such mediation fails either party may initiate litigation to resolve the dispute. Should either party initiate litigation to settle any dispute involving the terms of this Agreement such litigation shall be initiated in the General Court of Justice of North Carolina seated in Orange County, North Carolina. 10. Non Appropriation: Provider acknowledges that County is a governmental entity, and the validity of this Agreement is based upon the availability of public funding under the authority of its statutory mandate. In the event that public funds are unavailable and not appropriated for the performance of County's obligations under this Agreement, then this Agreement shall automatically expire without penalty to County immediately upon written notice to Provider of the unavailability and non-appropriation of public funds. IN WITNESS WHEREOF, Orange County and the Provider have signed this Agreement, effective as of the day first written above. ORANGE COUNTY PROVIDER b tynee q By:[� � uui By: L Department Director Title: 200 S. Cameron St. Douglas P. Malinowski, Sole Proprietor P.O. Box 8181 1005 Dimmocks Mill Rd Hillsborough,NC 27278 Hillsborough,NC 27278 Revised 12/18 3 Attachment 1 Limits of • and Stump Removal Legend Exist. Fence to be Removed • 1 Limits of Stump Removal �~ ?, r •1{ Lake Orange Install Erosion Control Exist. Fence to be ., Removed Concrete:Big • Exist. Fence to be N AT '. ���_ .. %:. r�l`pl P• •4- :•+ ,��+T:Z+wf'�w-IYr.A "` --�+.Y �! f^ .. 1�5 . Google Earth ©2018 Google I 100 ft DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Attachment B Quote Wellsmont Landscaping 1005 Dimmocks Mill Rd 1vi , � Hillsborough, NC 27278 S P I "w919.810.6282 '.l19-810 . 6282 Customer Customer Number OR1 Quote Date July 24, 2019 Orange County Sales Person DPM 131 W. Margret Lane, PO Box 8181 Expiration Date August 23, 2019 Hillsborough, NC 27278 Terms Proposal Name Lake Orange Dam Project Name Proposal Number 2019-274 Version Number 1 SKU Size/ Description Quantity Unit Extended Unit Price Price Labor Remove chainlink fence from spill way, leave post in 1.00 $2,360.00 $2,360.00 place. Haul fence to landfill. Cut all stump flush around spill way, haul debris offsite. Cut/grind stumps with mulching head and by hand . Labor Hand trimming newly established cleared area around 1.00 $240.00 $240.00 spill way Seeding Seeding: Over seed newly cleared area around spill 1.00 $250.00 $250.00 way Erosion Control Install 600 sq ft of erosion matting along a 60'x10' 1.00 $275.00 $275.00 section as noted with fescue seed mix Taxable $0.00 Tax Exempt $3,125.00 Tax $0.00 Total $3,125.00 1 1 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Attachment C - NCDEQ Erosion Control Blanket Specs Practice Standards and Specifications 6.17 ROLLED EROSION CONTROL PRODUCTS RECP Definition Rolled erosion control products are manufactured or fabricated into rolls designed to reduce soil erosion and assist in the growth, establishment and protection of vegetation. Examples of RECP's are blankets, nets, and matting. Purpose Erosion control mats and blankets are intended to protect soil and hold seed and mulch in place on slopes and in channels so that vegetation can become well established. Turf reinforcement mats can be used to permanently reinforce grass in drainage ways during high flows. Nets are made of high tensile material woven into an open net which overlays mulch materials. Blankets are made of interlocking fibers, typically held together by a biodegradable or photodegradable netting(for example, excelsior or straw blankets). They generally have lower tensile strength than nets, but cover the ground more completely. Coir(coconut fiber)fabric comes as both nets and blankets. Conditions Where Rolled Erosion Control Products (RECP's) should be used to aid permanent vegetated stabilization of slopes 2:1 or greater and with more than 10 feet of Practice Applies vertical relief RECP's should also be used when mulch cannot be adequately tacked and where immediate ground cover is required to prevent erosion damage. RECP's should be used to aid in permanent stabilization of vegetated channels when runoff velocity will exceed 2 ft/sec on bare earth during the 2-year rainfall event that produces peak runoff. The product selected must have a permissible shear stress that exceeds the shear stress of the design runoff event. Planning • Good ground contact is critical to the effectiveness of these products. If Considerations good ground contact is not achieved, runoff can concentrate under the product,resulting in significant erosion. • Nets must be used in conjunction with mulch. Excelsior, woven straw blankets and coir(coconut fiber)blankets may be installed without mulch. There are many other types of erosion control nets and blankets on the market that may be appropriate in certain circumstances. In general,most nets(e.g.jute matting)require mulch in order to prevent erosion because they have a fairly open structure. Blankets typically do not require mulch because they usually provide complete protection of the surface. • Most netting used with blankets is photodegradable,meaning they break down under sunlight(not UV stabilized). However,this process can take months or years even under bright sun. Once vegetation is established, sunlight does not reach the mesh. It is not uncommon to find non- degraded netting still in place several years after the installation. This can be a problem if maintenance requires the use of mowers or ditch cleaning equipment. In addition, birds and small animals can become trapped in the netting. Rev.6/06 6.17.1 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 • Biodegradable blankets are available for use in sensitive areas. These organic blankets are usually held together with a fiber mesh and stitching which may last up to a year. Design Criteria The following discussion and examples of design are adapted from "Green Engineering, Design Principles and Applications Using Rolled Erosion Control Products"by C.Joel Sprague. Slope Protection: Reducing raindrop and overland flow erosion. The Revised Universal Soil Loss Equation(RUSLE),as shown below,is commonly used to estimate erosion due to rainfall and sheet runoff. A= R * K* LS * C * P where: A=soil loss in tons/acre/year R=rain factor K=soil erodibility LS=topographic factor C=cover factor P=practice factor The United States Department of Agriculture's handbook, "Predicting Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation(RUSLE), 1997,"provides agriculture-oriented values for all of these variables. Yet, when the equation is used to estimate construction-related erosion,the following unique C-and P-factors developed specifically for these applications should be used. The C-Factor—C-factors are equal to the reduction in soil loss when using a specific erosion control system when compared to the comparable bare soil (control) condition. The designer will require C-factors representing various conditions from unvegetated to fully vegetated, including vegetation, which has been mulched or,alternatively,protected by an RECP,in order to determine an appropriate factor to be used to represent the design condition. (See Table 6.17a for a range of C-factors.) 6.17.2 Rev.6/06 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications Table 6.17a C-Factor for Various Slope Treatments Treatment Dry Mulch Rate C-Factor for Growing Period* kg/m3 Slope % <6 Weeks 1.5-6 Months 6-12 Months Annualized** No mulching or seeding - all 1.00 1.00 1.00 1.00 Seeded grass none all 0.70 0.10 0.05 0.15 0.22 <10 0.20 0.07 0.03 0.07 0.34 <10 0.12 0.05 0.02 0.05 0.45 <10 0.06 0.05 0.02 0.04 0.45 11 - 15 0.07 0.05 0.02 0.04 0.45 16 -20 0.11 0.05 0.02 0.04 0.45 21 -25 0.14 0.05 0.02 0.05 0.45 26 - 33 0.17 0.05 0.02 0.05 0.45 34 - 50 0.20 0.05 0.02 0.05 Second-year grass - all 0.01 0.01 0.01 0.01 Organic and Synthetic Blankets - all 0.07 0.01 0.005 0.02 Composite Mats - all 0.07 0.01 0.005 0.02 Synthetic Mats - all 0.14 0.02 0.005 0.03 Fully Vegetated Mats - all 0.005 0.005 0.005 0.005 *Approximate time periods for humid climates: Conversion: kg/m3 x 4.45 = tons/acre. **Annualized C-Factor= (<6 weeks value x 6/52) + (1.5-6 months value x 20/52) + (6-12 months value x 26/52). Table 6.17b Permissible Shear Stress, -rP, of Various RECP's Max. Permis- Slopes* Category Product Type sible Shear Stress Up To (lb/ft2) Degradable RECP's (Unvegetated) Nets and Mulch 0.1 -0.2 20:1 Coir Mesh 0.4 - 3.0 3:1 Blanket- Single Net 1.55-2.0 2:1 Blanket- Double Net 1.65- 3.0 1:1 Nondegradable RECP's Unvegetated TRM** 2 -4 1:1 Partially Vegetated TRM 4 - 6 >1:1 Fully Vegetated 5- 10 >1:1 * Steeper slope limits may apply. For further information, contact the manufacturer. **Turf Reinforcement Mat. Rev.6/06 6.17.3 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 The P-Factor—when examining erosion by itself,is commonly taken as 1.0, si nce thi s assumes that no sped al "practi ces" (i.e.terraci ng, contouri ng, etc.) wi I I be used. Yet, the use of si I t fences or other storm water management/ sediment control practices may be integrated into the RUSLE using a P-factor that is less than 1.0, which reflects the effectiveness of the sediment control practice in removing sediment from runoff. Sample Problem A steep slope is to be protected from erosion using RECP. The 3H:1V 6.17a slope is 100 feet long and comprised of silty loam. The RUSLE will be used to evaluate the effectiveness of RECP in limiting annual soil loss. Following are the inputs to the RUSLE equation from the U.S. Department of Agriculture: R = 250 K= 0.33 LS = 6.2 P = 1.0 (assuming no sediment control) From Table 6.17a: Cunprotected = 1.00 Cprotected, year 1 = 0.03 Cprotected, year 2+ = 0.005 Aunprotected = 250 x 0.33 x 6.2 x 1.0 x 1.0 = 511 tons/acre/year Aprotected, year 1 = 250 x 0.33 x 6.2 x 0.03 x 1.0 = 15 tons/acre/year Aprotected, year 2+ = 250 x 0.33 x 6.2 x 0.005 x 1.0 = 3 tons/acre/year This example shows that vegetation, protected by an RECP, is 97 percent effective in reducing erosion in the first year and 99.5 percent effective in the longer-term. Table 6.17b aids in selecting an appropriate type of RECP for the project-specific slope. Drainage Channels Concepts—Permissible shear design is commonly used to determine if a channel I i ner is stable. This method requires the input of an appropriate expected flow rate(discharge)as well as the determination of flow depth. A broader presentation of channel design is located in Appendix 8.05, Design of Stable Channels and Diversions. The design flow rate will be based on local storm frequency design standards and flow depth is calculated - commonly using Manning's equation. With these inputs the designer can then perform a permissible shear design, which compares the permissible shear of the prospective I i ner materials to the expected flow-induced shear as calculated using the equation below. Tc =YDS where: Y=unit weight of water(62.4lb/ft3) D=depth of flow(ft) S =channel slope(ft/ft) 6.17. Rev.6/06 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications f the permi ssi bl a shear stress, T p, i s greater than the computed shear, T c, the lining is considered acceptable. Values for permissible shear stress, Tp, for I i ni ngs are based on research conducted at I aboratory f aci I i ti es and i n the field. Typical values are given in Table 6.17b. The permissible shear stress, 2 p, indicates the force per unit area resulting from flowing water required to create i nstabi I i ty of the I i ni ng materi a1 and/or ad aunt soi 1. Manning's Equation and Roughness Coefficient, n The condition of uniform, steady flow in a channel at a known discharge is computed using the anning s quation below. umerous computer programs are available to facilitate the use of this equation since a trial-and-error solution relating channel width, B,and depth, D, isrequired. Q = (1.49/n) (A) (R)2/3(S)1/2 anni ng s equati on for determi ni ng vel oci ty: V= (1.49/n) (R)2/3(S)1/2 where: Q =discharge(cfs) V=average vel oci ty in cross section(ft/s) n=Manning's roughness coefficient A=cross-sectional area(ft ) R= hydraul i c radius=A/P (ft) P=wetted perimeter(ft) S = energy gradient (commonly to en as equivalent to the channel bed slope,ft/ft) The appropri ate anni ng s "n" to use when designing with PS depends on whether one is designing for bare soil retention and vegetation establishment(short-term)or for fully grassed conditions(long term),or both. The°n"values for RECP's can vary significantly with material type and flow depth, but they typi cal I y range from . to . and are usual I y provided by the manufacturer. In lieu of product-specific information, the following values can be used as approximations. nunvegetated = 0.02 nvegetated = refer to Table 6.17c and Figure 6.17a nrned = refer to Table 8.05e Table 6.17c Grass Retardance Categories Average Grass Length Retardance >24 in. A 10 in. to 24 in. B 6 in. to 10 in. C 2 in. to 6 in. D Less than 2 in. E Rev.6/06 6.17. DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 a Figure 6.17a Hydraulic roughness of •5 _ grass .3 104 .2 ~� .1 .08 .06 0 .05 .04 .03 .02 1 2 3456 2 3456 81015 VP, ft`/sec Figure 6.17b Limiting values for bare (') 21 S (400) and TRM protected soils (6) 18 7 \ (350) v � v N M 15 6 f— (300) 4- Soil Protected (4) >. 12 with ECB 5 (250) U L (3) 0 9 4 (200) (2) > 5 Soli Protecie 3 V) MO) � itF� H�� � 2 t (100) 71 (0) 1 —1 (50) 1 2 5 10 20 50 Time (hours) Figure 6.17c Limiting values for plain TRM Rein- � and TRM reinforced grass (6) 18 orced 6 ss 7 (350) �. N (5) 15 6 (300) (4) >12 44!r—ass with - 5 (250) (3) '0 9 rouind Cover 4 d (zoo) a1 03 S (2) 5 3 � (15a) (1) :t 3 rass with 2 i- (100) C_ Q6Ri• ver E_ (0) —S 0 1 —1 (50) 1 2 5 10 20 50 Time (hours) 6.17.6 Rev.6/06 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications Sample Problem Determine if an RECP-lined drainage channel will be stable for a long- 6.17b term peak flow (10-year design storm) of 70 cfs down a 20:1 slope (S=0.05)with a 4 foot bottom width and 1:1 side slopes.The duration of flow is 50 hours for long-term and one hour for short-term design. The grass cover is expected to be in retardance group D.Short-term stability can be checked using the two-year design storm, which produces a short-term peak flow of 45 cfs. Long-term design = vegetated channel stability • Use Qpeak = Q10-year= 70 cfs • From Figure 6.17c: Limiting shear= 6 Ib/ft2 • Assume nvegetated = 0.05 Solve for the depth of flow using iterations of Manning's equation. An Excel spreadsheet located on the internet at http://www.dlr.enr.state. nc.us/pages/sedimenttecassist.html or commercially available channel software is recommended. For trapezoidal channels: (bd + zd2) 2/3 Qn (bd + zdZ) _ b + 2d (z2 + 1)v2 1.49S112 From trial-and-error, d = 1.7ft Determine area of flow A, from A= (bd +zdZ) = 9.8ft2 Since slope < 1:10, calculate VR using: Ve'timate = 7.1 ft/s; VR= (7.1ft/s) (1.11) = 7.88ft/s From Figure 6.17a: Use n = 0.032. Recalculate d = 1.34ft A= 7.14ft2 Check shear stress'Lc=YDS = (62.4) (1.34) (0.05) =4.18 Ib/ftZ 4.18 < 6 Ib/ftZ, therefore acceptable Rev.6/06 6.17.7 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 a Sample Problem Short-term design = bare soil channel stability 6.17b con't. • _ _Use Qpeak- Q2-year-45 CfS • From Figure 6.17b: Limiting shear=4.5 Ib/ft2 • For mat on bare soil, n = 0.03 Determine depth of flow via trail-and-error using Manning's Equation: For trapezoidal channels: (bd + zd2) (bd + zd2) 2/3 = Qn (bd + zd2) b + 2d (z2 + 1)1/2 1.49S112 From trial-and-error, d = 1.0ft Check shear stress T =YDS _ (62.4) (1.0) (0.05) = 3.12 I b/ft2 3.12 <4.5 Ib/ft2, therefore acceptable Construction Specifications ven if properly designed, if not properly installed, Ps will probably not function as desired. Proper i nstal I ati on is imperative. ven if properly i nstal I ed, if not properly timed and nourished, vegetation will probably not grow as desi red. Proper seed/vegetation selection i s al so imperative. rade the surface of i nstal I ati on areas so that the ground is smooth and loose. hen seedi ng pri or to i nstal I ati on, fol I ow the steps for seed bed preparati on, soi I amendments, and seedi ng i n S rfa e Stabili ation, 6.1. All gullies,rills, and any other disturbed areas must be fine graded prior to installation. Spread seed before P i nstal I ati on.( : emove al I I arge roc s,di rt cl ods, stumps,roots,grass cl umps,trash,and other obstructi ons f rom the soi I surface to al I ow for di rect contact between the soi I surface and the P.) Termi nod anchor trenches are requi red at P ends and i ntermi ttent trenches must be constructed across channels at 25-foot intervals. Terminal anchor trenches should be a minimum of 12 inches in depth and 6 inches in width, while intermittent trenches need be only 6 inches deep and 6 inches wide. Installation for Slopes—Place the RECP 2-3 feet over the top of the slope and into an excavated end trench measuring approximately 12 inches deep by 6 inches wide. Pin the RECP at 1 foot intervals along the bottom of the trench, backfill, and compact. Unroll the RECP down (or along) the slope maintaining direct contact between the soil and the RECP. Overlap adjacent rot I s a mi ni mum of 3 i nches. R n the P to the ground using staples or pins in a 3 foot center-to-center pattern. Less frequent stapling/pinning is acceptable on moderate slopes. 6.17. Rev.6/06 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications e —Excavate terminal trenches(12 inches deep and 6 inches wide)across the channel at the upper and lower end of the I i ned channel sections. At 25-foot intervals along the channel, anchor the RECP across the channel either in 6 inch by 6 inch trenches or by installing two closely spaced rows of anchors. Excavate longitudinal trenches 6 inches deep and wide along channel edges(above water I i ne) i n whi ch to bury the outsi de P edges. Place the first RECP at the downstream end of the channel. Place the end of the first RECP in the terminal trench and pin it at 1 foot intervals along the bottom of the trench. Note:The P should be placed upside down in the trench with the roll on the downstream si de of the bench. Once pinned and backfilled, the RECP is deployed by wrapping over the top of the trench and unrol I i ng upstream. f the channel i s wi der than the provi ded rol I s, pl ace ends of ad acent rot I s i n the termi nal trench,overl appi ng the adjacent rolls a minimum of 3 inches.Pin at 1 foot intervals,backfill, and compact. Unroll the RECP in the upstream direction until reaching the first intermittent trench. old the P bac over itself, positioning the roll on the downstream si de of the trench, and ad owi ng the mat to conform to the trench. Then pin the RECP (two layers) to the bottom of the trench, backfill, and compact. onti nue up the channel (wrapping over the top of the i ntermittent trench) repeating this step at other intermittent trenches, until reaching the upper terminal trench. t the upper terminal trench, allow ow the P to conform to the trench, secure with pins or staples, backfill, compact and then bring the mat back over the top of the trench and onto the existing mat(2 to 3 feet overlap in the downstream direction), and pin at foot i nterval s across the P. hen starting installation of a new roll,begin in a trench or shingle-lap ends of rolls a mi ni mum of foot with upstream Pon top to prevent uplifting. Race the outside edges of the RECP(s) in longitudinal trenches, pin, backfill, and compact. Anchoring Devices 11 gauge,at least 6 inches length by 1 inch width staples or i nch mi ni mum I ength wooden sta es are recommended for anchori ng the P to the ground. Drive staples or pins so that the top of the staple or pin is flush with the ground surface. nchor each P every 3 feet along its center. ongitudinal overlaps must be sufficient to accommodate a row of anchors and uniform along the entire length of overlap and anchored every 3 feet along the over)ap length. of I ends may be spl i ced by overl appi ng foot (i n the di recti on of water flow),with the upstream/upslope mat placed on top of the downstream/ downslope P. This overlap should be anchored at foot spacing across the P. hen i nstal I i ng mul ti pl e wi dth mats heat seamed i n the factory,a1 I factory seams and field overlaps should be similarly anchored. Rev.6/06 6.17. DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 a Figure 6.17d Temporary Channel Liners; Washington State Department of Ecology Excavate channel to design Overlap 6" min. grade and cross-section r. Design depth Longitudinal anchor trench Overcut channel 2"to allow bulkin r IAL i JA during seedbed preparation 6 J Typical installation with erosion control blankets or turf reinforcement mats 6„ 6;, Intermittent check slot Longitudinal anchor trench Shingle-lap spliced ends or begin new roll in an intermittent check slot Prepare soil and apply seed before installing blankets, mats or other temporary channel liner system 3 f NOTES: 1. Design velocities exceeding 2 ft/sec require temporary blankets,mats or similar liners to protect seed and soil until vegetation becomes established. 2. Grass-lined channels with design velocities exceeding 6 ft/sec should include turf reinforcement mats 6.17.10 Rev.6/06 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications Figure 6.17e Channel Installation and Slope Installation; Washington State Ecology Department Longitudinal anchor Terminal slope and trench iL channel anchor trench 6" Stake at T-5' < intervals 41 rq ra b° r° slot at 25' r° intervals r9 � Initial channel Intermittent anchor trench check slot NOTE: 1. Check slots to be constructed per manufacturers specifications. 2. Staking or stapling layout per manufacturers specifications. Slope surface shall be smooth before If there is a berm at the top of placement for proper soil contact. slope,anchor upslope of the berm. Stapling pattern as Min. 2" " 1 overla Anchor in 6"x6" min. Trench per manufacturers p r� f • and staple at 12" intervals. recommendations. Min. 6"overlap. Staple overlaps max. 5"spacing. tight-allow Bring material down to a level area, Do not stretch blankets/matting g turn the end under 4 and staple at 12 the rolls to conform to any irregularities. intervals. For slopes less than 3H:iV, rolls Lime,fertilize,and seed before installation. Planting may be placed in horizontal strips. of shrubs,trees,etc. should occur after installation. Rev.6/06 6.17.11 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 a Maintenance 1. nspect of I ed rosi on ontrol Products at I east wee I y and after each significant(1/2 inch or greater)rain fall event repair immediately. ood contact with the ground must be mai ntai ned, and erosi on must not occur beneath the P. 3. ny areas of the Pthat are damaged or not in close contact with the ground shal I be repai red and stapl ed. . f erosi on occurs due to poorl y control I ed drai nage,the probl em shal I be fixed and the eroded area protected. oni for and repair the P as necessary until ground cover is establ i shed. References Prague, . oel. T / nvironmental, nc. " reen ngineering, esign pri nci pl es and appl i cati ons usi ng rol I ed erosi on control products" torm ater anagement anual for estern ashi ngton, ashi ngton tale epartment of col ogy, ater ual i ty Program http://www.ecy.wa.gov/programs/wq/stormwater/index.html rosion ontrol Technology ouncil, http://www.ectc.org 6.17.1 Rev.6/07 DocuSign Envelope ID: F52521E7-1OC1-43F9-B62F-C1E599A5D572 Attachment D - BioNet C70OBN Specs 1 ROLLMAKM I� ROLLED EROSION CONTROL Specification Sheet BioNet C700BNT" Erosion Control Blanket DESCRIPTION Index Property West Method Typical The long-term double-net Erosion Control Blanket(ECB)shall be 0.56 in. a 100%biodegradable,machine-produced mat fabricated in the Thickness ASTM D6525 (14.2 mm) U.S.A.of coconut(coir)fiber with a functional longevity of greater Water Absorbency ASTM D1117 186.8% than 36 months and permissible shear stress exceeding 2.25 psf. Mass/Unit Area ASTM 647S 26.61 oz/sy (NOTE:Functional longevity may vary depending upon climatic (903 g/sm) conditions,soil,geographical location,and elevation.)The blanket Swell ECTC Guidelines 35% shall be of consistent thickness with the coconut fiber evenly Lignin Content TAPPI TM222 32.8% distributed over the entire area of the mat.The blanket shall be Light Penetration ASTM D6567 14.9% covered on the top side with a 60 x 50 woven coir fiber netting Tensile Strength-MD ASTM D6818 1271 Ibs/ft with mesh openings not to exceed.75 in.x.7S in.(1.90 x 1.90 cm). Elongation-MD ASTM D6818 ( 84I The blanket shall be covered on the bottom side with 100% 38.8.7% biodegradable woven natural fiberjute netting.The jute netting Tensile Strength-TO ASTM D6818 834t 4 s/f/ft1) shall form an approximate 0.50 in.x 1.0 in.(1.27 x 2.54 cm)mesh. Elongation-TO ASTM D6818 41.4% The blanket shall be sewn together on 1.50 in.(3.81 cm)centers with degradable thread. Maximum Permissible Shear Stress The C70OBN shall meet Type 4 specification requirements unvegetated Shear Stress 2.35 psf(112 Pa) established by the Erosion Control Technology Council(ECTC)and unvegetated velocity 10 fps(3.OS m/s) Federal Highway Administration's(FHWA)FP-03 Section 713.17. Slope Design Data: C Factors Material Content Slope Gradients(5) Matrix 100%Coconut Fiber 0.5 Ib/sy Slope Length(L) <_3:1 3:1-2.1 >-2:1 (270 g/sm) <6 m(20 ft) 0.0001 0.018 0.050 100%biodegradable 60 x SO coir netting 143 Ib/1000 sf 20-50 ft 0.003 0.040 0.060 Netting (700 g/sm) >15.2 m(so ft) 0.007 0.070 0.070 100%biodegradable jute netting 7.7lb/1000 sf (37.6 g/sm) Thread Biodegradable Flow Depth Manning's n Standard • , <-0.15 m(0.50 ft) 0.022 Width 8.0 ft(2.4 m) O.SO-2.0 ft 0.022-0.014 Length 45 ft(13.7 m) >_0.60m(2.0ft) 0.014 Weight±10% 74.4lbs(33.75l(g) Area 40 sy(33.45 sm) NORTH Western Green ©2019,North American Green is a registered trademark from Western Green.Certain 4609 E.Boonville-New Harmony Rd. products and/or applications described or illustrated herein are protected under one or more AMERICAN Evansville,IN 47725 U.S patents.Other U.S.patents are pending,and certain foreign patents and patent applications may also exist.Trademark rights also apply as indicated herein.Final determination of the suitability of any information or material for the use contemplated,and nagreen.com its manner of use,is the sole responsibility of the user.Printed in the U.S.A. GREEN' 800-772-2040 EC RMX MPDS C700BN 1.19 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Attachment E - NCDEQ Permanent Seeding Specs Practice Standards and Specifications 6.11 PERMANENT SEEDING PS Definition Controlling runoff and erosion on disturbed areas by establishing perennial vegetative cover with seed. Purpose To reduce erosion and decrease sediment yield from disturbed areas, to permanently stabilize such areas in a manner that is economical,adapts to site conditions,and allows selection of the most appropriate plant materials. Conditions Where Fine-graded areas on which permanent, long-lived vegetative cover is the Practice Applies most practical or most effective method of stabilizing the soil. Permanent seeding may also be used on rough-graded areas that will not be brought to final grade for a year or more. Areas to be stabilized with permanent vegetation must be seeded or planted within 15 working days or 90 calendar days after final grade is reached,unless temporary stabilization is applied. Introduction During the initial phase of all land disturbing projects,the protective layer,either natural or man-made, is removed from the earth's surface. As the protective layer is removed, the resulting bare areas are exposed to the natural forces of rainfall, freezing, thawing, and wind. The result is soil erosion that leads to sediment pollution of North Carolina streams,rivers, lakes, and estuaries. This design manual presents many alternative strategies for preventing erosion and reducing sediment loss during the construction process. Establishment of protective vegetative cover during the construction project, however, is the crucial step in achieving soil stabilization, controlling soil erosion, and preventing sedimentation ofwaterways.Without a sufficient amount ofroot mat and leaf cover to protect and hold the soil in place,large volumes of soil will be lost and waterways will be degraded long after prof ects are considered complete. Sections of this practice standard address many of these various situations and set forth selection criteria for the appropriate cover based on purpose and adaptability. Some sediment and erosion control practices recommended in earlier editions of the manual may no longer be applicable. For example,many popular and commonly used seed and plant varieties have been identified as invasive. Invasive plants are defined as species that aggressively compete with, and displace, locally adapted native plant communities. In select cases where no practical alternative is available,these plants may be considered on a limited basis for soil stabilization,understanding that the goal is to eliminate the use of all invasive plants in favor of non-invasive native and/or introduced species that will provide an equally acceptable vegetative cover. Where there is no alternative to the use of invasive species,measures need to be incorporated in the installation and maintenance of these plants to limit their impacts. Rev.5/08 6.11.1 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 It is imperative that disturbed soils be totally protected from erosion and sediment loss during construction and before a project is considered complete and acceptable.Installing appropriate vegetation in an immediate andtimely fashion is the optimal means of achieving this stabilization. Vegetative specifications for most exposed soil conditions across North Carolina are provided in this section of the manual.It should be noted however,that no two sites in the State are exactly alike;therefore the protective vegetative cover for individual sites should be carefully selected. Each requires its own investigation, analysis, design and vegetative prescription as set forth in this section of the manual. This practice standard describes three stages of vegetative cover; immediate, primary and long term. Effective and acceptable stabilization can be provided only when the optimum combination of immediate, primary, and long term vegetative practices are applied. The vegetative measures presented in this chapter include application of seed, sod and sprigs. Use of field and container grown plants are not addressed in this manual. Planting of these types of vegetation is typically at spacing and intervals that will not provide the required protective cover. However, the design professional is encouraged to utilize these larger plants to compliment the required protective cover, particularly where these types of plants will provide seed for continued long term cover and wildlife habitat. PLANNING CONSIDERATIONS SOILS Test and analyze the type(s)and quality of the existing soils on a site,their pH ranges,and their nutrient levels. Taking soil samples from the different areas of the project site and having them tested at a state or independent lab will provide a baseline for determining the pH modifiers and additional nutrients required for the selected plant varieties. Disturbed conditions on a site may produce a variety of soil communities. Nutrient and pH levels in deeply cut soils will be quite different from those soils found on the original surface. When sites are highly disturbed through mechanical means such as grading,the soils become mixed together in many different ratios. These areas should be identified and tested. Results from soil tests will usually include recommended application rates of soil modifiers such as lime and fertilizer for the selected plant species in the particular soils. Application rates will be itemized in the report. The texture of the soil on a site,which is the proportion of sand,silt,and clay in the soil, is an important physical indicator of the site's ability to support vegetation. In heavy clay soils amendments may be necessary to provide an adequately drained planting medium. Conversely, in extremely sandy soils, amendments may be required to provide for moisture and nutrient retention. 6.11.2 Rev.5/08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications Soil tests will indicate the texture of the given soil but will not provide recommendations for amendments that will improve the soil texture. Generally, the addition of organic materials will improve the porosity of heavy clay soils and improve the water holding capacity of extremely sandy soils. On sites where these different soil conditions exist, it is recommended that a design professional with experience in soil modification be employed to recommend the proper amendments. For more information visit the NCDA Agronomic Services Soil Testing web page http://www.agr.state.nc.us/agronomic/sthome.htm SOIL PREPARATION Proper soil preparation is necessary for successful seed germination and root establishment. It is also necessary for establishment of rooted sprigs,sod and woody plants. Heavily compacted soils prevent air, nutrients and moisture from reaching roots thereby retarding or preventing plant growth. The success of site stabilization and reduction of future maintenance are dependent on an adequately prepared soil bed. Following are the requirements for preparation of areas to be vegetated by grassing, sprigging, sodding, and/or planting of woody plants: General Requirements: • Preparation for primary/permanent stabilization shall not begin until all construction and utility work within the preparation area is complete. However, it may be necessary to prepare for nurse crops prior to completion of construction and installation of utilities. • A North Carolina Department of Agriculture Soils Test (or equal) shall be obtained for all areas to be seeded, sprigged, sodded or planted. Recommended fertilizer and pH adjusting products shall be incorporated into the prepared areas and backfill material per the test. • All areas to be seeded or planted shall be tilled or ripped to a depth specified on the approved plans, construction sequence and/or construction bid list. Ripping consists of creating fissures in a criss-cross pattern over the entire surface area,utilizing an implement that will not glaze the side walls of the fissures. Site preparation that does not comply with these documents shall not be acceptable. The depth of soil preparation may be established as a range based on the approval of the reviewing state or local agency. Once tilled or ripped according to the approved plan, all areas are to be returned to the approved final grade. pH modifiers and/or other soil amendments specified in the soil tests can be added during the soil preparation procedure or as described below. • All stones larger than three(3)inches on any side,sticks,roots,and other extraneous materials that surface during the bed preparation shall be removed. Rev.5/08 6.11.3 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Areas to be Seeded: • Till or disc the prepared areas to be seeded to a minimum depth of four (4)inches.Remove stones larger than three(3)inches on any side,sticks, roots and other extraneous materials that surface. If not incorporated during the soil preparation process,add pH modifier and fertilizers at the rate specified in the soil test report. • Re-compact the area utilizing a cultipacker roller.The finished grade shall be a smooth even soil surface with a loose, uniformly fine texture. All ridges and depressions shall be removed and filled to provide the approved surface drainage. Seeding of graded areas is to be done immediately after finished grades are obtained and seedbed preparation is completed. Areas to be Sprigged,Sodded,and/or Planted: • At the time of planting till or disc the prepared areas to a depth of four(4) to six(6) inches below the approved finished grade. Remove all stones larger than three(3)inches on any side,sticks,roots and other extraneous materials that surface. If not incorporated in the ripping process,add pH modifier,fertilizer,and other recommended soil amendments. • Re-compact the area utilizing a cultipacker roller and prepare final grades as described above. Install sprigs,sod and plants as directed immediately after fine grading is complete. Mulch,mat and/or tack as specified. VEGETATION Availability of seed and plant materials is an important consideration of any construction stabilization effort. Throughout North Carolina, climate, economics, construction schedule delays and accelerations, and other factors present difficult challenges in specifying the different vegetation needed for site stabilization. To help resolve this issue,vegetative stabilization requires consideration in three categories: ■ Immediate Stabilization—nurse crop varieties(Note: temporary mulching may be utilized for immediate stabilization if outlined on the approved plans and construction sequence.) ■ Primary Stabilization—plant varieties providing cover up to 3 years with a specified maintenance program ■ Long Term Stabilization—plant varieties providing protective cover with maintenance levels selected by the owner An adequate job in one of these areas does not guarantee success in the later phases. Horticultural maintenance must be included in the plans. Immediate vegetative cover will always require additional fertilization, soil amendments, soil tests, overseeding and/or other horticultural maintenance until primary vegetative cover is established. 6.11.4 Rev.5/08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications Where provisions are made for regular maintenance, primary vegetative cover may be the end result. An example of primary vegetative cover being acceptable as an end use would be lawns in residential and commercial developments that are established,monitored and complimented with regular and approved horticultural maintenance practices. (See Example 6.11.a.) In projects where continual maintenance will not be provided or scheduled following the primary stabilization of a project, long-term stabilization will be necessary. Maintenance of initial and long-term stabilization can cease only after the long-term cover has established and hardened to local climatic conditions. Maintenance of long-term vegetation must be included in the project construction sequence and on the approved plans. Examples of areas suitable for long term vegetation include roadsides,reforestation areas, restored flood plains, restored riparian areas, phased closing of landfills, and mining reclamations. Complete stabilization requires using at least two, and most times, all three vegetative phases.The design professional must clearly communicate this point in their specifications, construction sequence, and in direct communications to owners and installers. The charts in tables 6.l l.a through 6.11 A provide information to assist the design professional in this task. The tables are not inclusive and are presented only as alternatives. The professional is expected and required to provide design and specifications that combine the information in the manual with knowledge of the particular sites and their constraints. pH AND NUTRIENT AMENDMENTS Determining the nutrients that enable seed and container plants to grow, flourish, and become established after planting are critical elements of the design and stabilization process. The soils tests previously described will provide a recipe for amendments based on particular plants and particular soils. The test results will recommend the amounts of base elements(nitrogen, phosphorous,potassium),pH modifiers and other trace elements that should to be added to the soil for selected species of seeds and plants. The acid/base characteristic of the soil is a primary component of soil fertility. If the soil acidity is not in the proper range,other nutrients will be ineffective, resulting in less productive plant growth. Most plants grow best in a pH range of 6.5 — 7.0 (slightly acidic to neutral). The soil tests will recommend the specific amendments and application rates required to achieve this range. These amendments must be incorporated into the soil (not applied on the surface) to be effective. (See the General Requirements for soil preparation specifications and timing for incorporation of soil amendments.) The base elements are easily found in bulk quantities. Lime can also be obtained in large quantities. They all must be thoroughly incorporated into the soil through appropriate mechanical means. Ground surface applications without proper soil mixing will result in poor results. In addition to the base fertilizers, other trace elements are needed to produce healthy and vigorous growth.These include but may not be limited to sulfur, manganese, zinc, boron, chlorine and molybdenum. If not already included with bulk mixes of the base elements,they can be obtained from commercial suppliers. Rev.5/08 6.11.5 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Provisions for soils test during and/or after initial grading is complete shall be included on the approved plan,in the approved construction sequence,and on the bid item list utilized for the project. If you did not obtain a soil test: Follow these recommendations for all grasses except centipedegrass. 1.Apply 75 pounds of ground limestone per 1,000 sq. ft. 2.Apply a starter type fertilizer(one that is high in phosphorus)based on the type of grass and planting method.Fertilizer bags have a three-number system indicating the primary nutrients, such as 8-8-8 or 5-10-10. These numbers denote the N-P-K ratio—the percentage of each nutrient in a fertilizer. The percentages are always noted in the following order: N Nitrogen for green color and growth. P 2 0 5 Phosphorus for good establishment and rooting. K20 Potassium to enhance pest and environmental stress tolerance. Some common examples of starter type fertilizers required for a 1,000 sq. ft. area include 40 pounds of 5-10-10, 20 pounds of 10-20-20, or 16 pounds of 18-24-6. For sandy soils, typical to coastal plain and sandhills of North Carolina,fertilizer rates should be increased by 20 percent. Where available, it is recommended that the design professional specify organic compounds that meet the fertilization requirements, pH and other element requirements. Initial studies have indicated that these compounds have a more positive effect on the environment than some of the synthetic compounds used to manufacture inorganic fertilizers. These materials are readily available in the commercial trade as well as found in recycled yard waste debris, sewerage sludge, lime-stabilized sludge and animal manures. Materials proposed for use must be industry certified and/or privately tested and certified to be acceptable for proposed areas of use and application prior to approval. MULCHES AND TACKING AGENTS Mulches and tacking agents may be required or necessary to protect a seedbed's disturbed surface until the seed can germinate and provide the required protection from erosion. Selection of the materials used in this application should be based on their ability to hold moisture in the soil,as well as protect exposed soil from rainfall, storm water runoff, and wind. The availability of the selected material and the means to apply it are critical factors to consider when planning for the stabilization of any disturbed area. The mulch must cover a minimum of eighty(80)percent of the soil surface and must be secured by a tacking agent,crimping,or protective biodegradable netting.Netting that incorporates plastic mesh and/or plastic twine should not be used in wetlands, riparian buffers or floodplains due to the potential of small animal mortality. See Section 6.14 for detailed specifications and product applications. SOIL BLANKETS Soil blankets can be an acceptable and effective method of temporary sediment and erosion control in lieu of nurse crops. See Section 6.17 of the manual for descriptions of this product and how it can be used in conjunction with this section. In absence of mulches and tracking agents other means of protection may be necessary and required. 6.11.6 Rev.5i08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications PROTECTIVE MATTING Protective matting consists of an impervious cover secured to the soil surface in lieu of vegetative cover. It is used to protect and stabilize the surface where the process of seeding or planting forms of vegetation may cause more erosion and off-site sedimentation than application of the mat. It is also used where a disturbed area is intended to lay fallow for a period of time before additional construction or land disturbance takes place. If a pervious matting is selected, a combination of vegetation and matting is required. Seeds can be applied prior to installation of the matting only after proper seedbed preparation has been provided. Also, live stakes, dormant sprigs, and other vegetation forms can be inserted in the pervious matting once it has been installed. Pre- seeded pervious matting may be used for quicker root establishment and stabilization only if certified dating and germination guarantees are provided. The reviewing agency must approve all pre-seeded matting on site prior to installation. Matting that incorporates plastic mesh and/or plastic twine should not be used in wetlands, riparian buffers or floodplains due to the potential of small animal mortality. See Section 6.17 for detailed specifications and recommended product applications. STABILIZATION IN WETLANDS, RIPARIAN BUFFERS, AND FLOODPLAINS Land disturbing activity involving streams, wetlands or other waterbodies may also require permitting by the U.S.Army Corps of Engineers or the N.C. Division of Water Quality.Approval of an erosion and sedimentation control plan is conditioned upon the applicant's compliance with federal and State water quality laws,regulations,and rules.Additionally,a draft plan should be disapproved if implementation of the plan would result in a violation of rules adopted by the Environmental Management Commission to protect riparian buffers along surface waters. Care should be taken in selecting vegetative stabilization of wetlands and riparian buffers to comply with permitting requirements of other agencies,as well as provide adequate ground cover. Planning Considerations for Land Disturbing Activities Within Wetland, Riparian,and Floodplain Areas Wetlands,riparian areas,floodplains,and/or terrestrial areas between streams and uplands,serve to buffer surface water and provide habitat for aquatic and terrestrial flora and fauna. When cleared and disturbed,these sensitive areas are difficult to protect. Because of their proximity to water courses,relatively high ground water tables,and flooding potential,detailed analysis and design is necessary to determine the appropriate erosion control measures during construction. Determining the appropriate and most expeditious means of permanent vegetative stabilization in these areas requires equally detailed analysis and design. The following considerations for erosion control and stabilization should be taken into account during the design phase of the land disturbing project where sensitive areas are involved: • Obtain soil tests to determine the soil type, pH, texture and available nutrients. • Based on the soil tests provide a schedule of nutrients and other soil amendments that will be required. Rev.5/08 6.11.7 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 • Select a seeding mix of non-invasive species that will provide immediate stabilization(a short-term environment that will support and compliment permanent vegetative stabilization) and include a selective native species mix that will eventually provide a permanent cover(a long-term environment that,with minimal maintenance,will provide adequate root and leaf cover). • Invasive species are to be avoided. If native species and introduced non- invasive seed sources are not available,protective matting that will hold and foster the development of native cover from adjacent seed sources should be used. Continuous maintenance must be employed until the selected species have matured and are no longer susceptible to competition from invasive plants. If no alternative to the use of invasive seeds and plants is available, invasives approved on the plans may be utilized only with strict containment measures outlined in detail on the plans, in the construction sequence and in the maintenance specifications. • Aquickly germinating nurse crop ofnon-invasive,non-competitive annual grass species can be used along with native seeding and/or matting. These temporary systems should be planted at minimal density so that they do not inhibit the growth and establishment of the permanent,native species. (See the plant chart in Table 6.1l.a for recommended native and nurse crop species.) • Seed bed preparation is key to successful establishment of seeds. Particular care should be taken,however,when working in wetlands,riparian areas, or floodplains due to their sensitive nature. Careful consideration should be given to the types and placement of large equipment working in these areas. This process must be outlined in detail on the plan's construction sequence. • Installation techniques vary and should be planned for accordingly. • A maintenance plan must be established for optimal plant establishment, submitted with the plans and included in the bid list for the project. Like all construction sites,wetlands,riparian areas,and floodplains will vary widely in physical makeup across North Carolina. Different conditions will dictate specific treatment, design and plant selection within the Mountains, Piedmont, and Coastal Plain regions. Soil tests, seedbed preparation, mulching,matting,and maintenance will be critical for successful vegetative establishment and long-term protection of these environmentally sensitive areas. Unavoidable impacts to these areas during land disturbing activities need to be addressed in detail on the plan sheets and construction sequence. 6.11.8 Rev.5/08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications Native Seed and Plant Selection for Stabilization of Wetlands, Riparian Areas,and Floodplains Upon the completion of the land disturbing activity, vegetative cover must be established on all areas not stabilized by other means. If work in these areas stops for more than 15 working days, temporary vegetative cover and/ or matting must be applied to all disturbed areas. The goal is to protect these areas from erosion and to prevent sedimentation of adjacent streams,wetlands, lakes,and other water bodies. Planning considerations for wetlands, riparian areas and floodplains will require additional research, detail and specifications. Native grasses are usually required as a condition of a 401 Water Quality Certification or a trout buffer variance. Native vegetative species are plant species that naturally occur in the region in which they evolved. These plants are adapted to local soil types and climatic variations. Because most native species do not germinate and establish as readily as some introduced species, it is necessary to provide a non-native nurse crop or matting to stabilize the soil until the native crop can become established as the dominant cover. Once established, the native plants will produce an extensive root structure that,if properly maintained,will stabilize soils and reduce erosive forces of rainfall and overland stormwater flow. Many of these plants also possess characteristics that,when established,allow them not only to survive,but also to thrive under local conditions. Seeding a mixture of perennial native grasses, rushes, and sedges is a way to establish permanent ground cover within wetlands, riparian areas and floodplains. The use of propagated plants is another method of reestablishing natives in these environments. Selecting a seed mixture and/or propagated plants of different species with complimentary characteristics will provide vegetation to fill select niches on sites with varying physical conditions. The design professional should note that because most native species do not germinate and establish as readily as some introduced species,it is necessary to provide a non-native nurse crop or matting to stabilize the soil until the native crop can become established as the dominant cover. For additional information about acceptable nurse crop varieties,consult the planting list in Appendix 8.02,local seed and plant suppliers,the North Carolina Cooperative Extension Service or a qualified design professional to assure the proper selection and plant mix. Rev.5/08 6.11.9 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Permanent native seed species within the seed mixture should be selected based on natural occurrence of each species in the project site area. Climate, soils,topography,and aspect are major factors affecting the suitability of plants for a particular site and these factors vary widely across North Carolina,with the most significant contrasts occurring among the three major physiographic regions of the state—Mountains, Piedmont, and Coastal Plain. Sub-regions of the state should also be considered. For example,the Triassic Basin in the Piedmont region may have characteristics that call for special soil treatment, limited plant selection, and special maintenance. Even within the riparian area, there may be need for different species depending on site conditions (i.e., dry sandy alluvial floodplains with wet pockets). Therefore,thoughtful planning is required when selecting species for individual sites in order to maximize successful vegetation establishment. Native seed and plant species are included on the plant list in Appendix 8.02 of this manual. The design professional should note that regardless of the benefits and advantages of native seeds and plants, there are potential issues if proper planning,installation and maintenance do not occur. These may include: • Potential for erosion or washout during the establishment stage; • Seasonal limitation on suitable seeding dates and availability of seed and plants; • Adaptability of species at specific sites; • Availability of water and appropriate temperatures during germination and early growth;and • Lack of maintenance to control invasive plants and undesirable competition. PLANTING • Seed—Prepare the seed bed as described above in soil preparation. Apply seed at rates specified on the plans, and/or as recommended in Tables 6.11a-c of this manual, with a cyclone seeder, prop type spreader, drill, or hydroseeder on and/or into the prepared bed. Incorporate the seed into the seed bed as specified. Provide finished grades as specified on the approved plan and carefully culti-pack the seedbed as terrain allows. If terrain does not allow for the use of a cultipacker, the approved plans and construction sequence must provide an alternative method of lightly compacting the soil. Mulch immediately. • Sprigs and Sod—Install onto the prepared seed bed per the most current guidance in Carolina Lawns,NCSU Extension Bulletin AG-69,or Practice 6.12 Sodding. 6.11.10 Rev.5/08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications • Woody plants (liners, container,B&B)—These materials are typically used to complement an herbaceous protective cover. They eventually are major components of long-term, permanent stabilization and should be chosen and planned in conjunction with immediate and long-term maintenance. The plants should be selected and specified by the design professional for each individual project. See Practice 6.13 Trees,Shrubs, Vines, and Ground Covers. MAINTENANCE The absence of or an incomplete landscape management specification and/ or complete maintenance schedule shall constitute grounds for disapproval of the plans. Proper maintenance is critical for the continued stabilization once vegetative cover is established. Although maintenance strategies for different sites may be similar, no two construction sites in North Carolina have been or will be able to be controlled or protected in identical ways. Variations in climate,topography,soils,available moisture,size and many other conditions will dictate the maintenance methodology to be used. A detailed schedule of maintenance will be required on the plans. This schedule will illustrate how the initial planting will be maintained to assure immediate, short term and permanent protection. The schedule will address topics such as appropriate irrigation of plants during the early establishment phase, drought conditions, excessive rainfall, mulch replacement, supplemental seeding, supplemental soils tests, application of nutrients and amendments, control of competitive and invasive species, disease and insect control, and corrective maintenance, measures to address failure of vegetation to become established. Contractual responsibility for maintenance after initial establishment of vegetative cover will be provided on the plans,in the construction sequence and on the bid list for the project. Maintenance bonds and/or warranty guarantee may be required of the responsible party,especially for areas in or adjacent to environmentally sensitive sites such as wetlands, riparian buffers, floodplains, and waters of the State. See Example 6.11 a for a sample maintenance specification and a minimum maintenance check list that shall be provided on all plans. RECOMMENDED BID LIST (These items should be itemized on documents utilized to obtain pricing for planting pertaining to vegetative stabilization of land disturbing projects in North Carolina.) • Soil test prior to grading(price per each test). • Soil test during grading operations(price per each test). • Soil test at completion of grading and/or prior to seeding, sprigging, sodding and application of fertilizer, lime, and other soil amendments (price per each test). • Ripping/subsoiling to a depth of six(6)inches. (Provide an alternate for ripping to a depth greater than six(6)inches.) (price per acre) • Tilling/discing ripped area to a depth of four(4)inches and re-compacting with a cultipacker roller(include in seeding price). Rev.5/08 6.11.11 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 • Seeding(price per square foot). • Mulching(price per square foot). • Repair seeding(price per square foot). • Repair mulching(price per square foot). • Matting(price per square yard). • Watering(price per thousand gallons). • Mowing(price per square foot). SEEDING RECOMMENDATIONS The following tables list herbaceous plants recommended for use as nurse crops for immediate stabilization and primary crops for initial and long-term stabilization. Nurse crops are expected to develop in two to five weeks and, with adequate maintenance, be an effective method of soil stabilization for a period of six months to one year. Nurse crops are not effective as primary long-term cover, however if properly maintained they can be an adequate cover and protection for the development of primary crops. The goal for a primary crop is for it to develop over a three-week to one-year period and be effective up to three years with a well-defined maintenance program. The long-term goal for a primary crop is the initial step toward a sustainable protective cover without the need of maintenance. Where the primary crop is intended for a managed lawn and landscape aesthetics, the effective period can be extended by a more intense maintenance program. Where native species are utilized and become established during the planned maintenance program, a permanent cover that will support future succession species should exist and require little or no additional maintenance or management. In uses of both nurse and primary crops,the development periods listed on the tables are optimal based on normal climatic conditions for the planting dates listed. The sediment and erosion control maintenance program must recognize that optimum temperatures and rainfall are the exception rather than the rule. The design professional needs to provide flexibility in the stabilization plan to address the potential ranges of temperature and moisture conditions we experience in North Carolina. 6.11.12 Rev.5/08 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 Practice Standards and Specifications Information is provided for seeding rates,optimum planting dates in the state's three regions,sun and shade tolerance,invasive characteristics,compatibility in wetlands and riparian buffers,and installation maintenance considerations. By going through the lists the design professional can select the nurse and primary seed varieties and maintenance characteristics they feel are best suited for their site conditions, vegetation management expertise and maintenance capabilities. To use the information in the seeding charts the plan preparer must: • Determine what nurse crop best fits their site, soil conditions, and permanent seed mix. • Obtain soil tests for all areas to be seeded. • Know the site's region:mountains,piedmont,or coastal plain. • Know if the areas to be seeded are sunny,part shade,or full shade. • Know if the areas are well or poorly drained. • Know if wetlands or riparian buffers are included in the areas to be seeded. • Know if a chosen crop is invasive and if so,what potential impacts it will have on the site and adjacent properties. With this knowledge the plan preparation may proceed utilizing the charts provided to provide the several seed mixes that will be applicable to the different areas requiring stabilization. Rev.5/08 6.11.13 0 0 0 c CO m' m HERBACEOUS PLANTS-Seeding recommendations for immediate stabilization/nurse crops o (2 to 5 weeks for development; effectiveness goal: 6 months to 1 year stabilization) Table 6.11.a m NURSE CROP SPECIES R In Optimal Planting Dates ui N Fertilization/ CJt Native/ Seeding Rates limestone coastal Sun/Shade Riparian Invasive Installation/Maintenance N Common Name Botanical Name Introduced lbs/acre lbs/acre Mountains Piedmont Plains tolerant Wetlands Buffers Yes or No Considerations Other information,commentary m Rye Grain Secale cerea/e 1 40 lbs By soil test 11/1-4/30 8/15-4115 8/15-4/15 Sun Yes Yes No Must be mown to reduce competitiveness with n permanent or long term vegetation w 1P Wh0eat Triticum aestivum I 30 Ibs B soil test 11/1-4/30 8/15-5/15 8/15-4/15 Sun Yes Yes No Must be mown to reduce Not water tolerant. May ;c be used 00 competitiveness with in wetlands that are not rn N permanent or long term continuously saturated. _'1 vegetation 6 rn German Millet Setaria italica 1 10 lbs By soil test 5/11-9/30 5/15-8/15 4/15-8115 Sun Yes Yes No Crop should be cut/disc Not water tolerant. May be used � rior to planting primaryor in wetlands that are not to D long term vegetation continuously saturated. cn 0 Ul Browntop Millet Urochloa ramosa 1 10 lbs By soil test 5/11-9/30 5/15-8/15 4/15-8/15 Sun Yes Yes No Crop should be cut/disc Not water tolerant. May be used N prior to planting primary or in wetlands that are not long term vegetation continuously saturated. Sudan grass(hybridL(hybrids Sorghum saccharatum 1 15 lbs By soil test NR NR 4/15-8/15 Sun No No Yes Crop should be cut/disc Use only where plants and seed S.bicolorssp.Drummondi prior to planting primary or can be contained and controlled. long term vegetation Kobe Lespedeza Kummerowia striate v.kobe 1 10 lbs By soil test 5/1-9/1 5/1-9/1 5/1-9/1 Sun No No No Consult qualified Use in Coastal Plain horticulturalist or extension agent for over-seeding with primary cover Korean Lespedeza Kummerowia stipulacea 1 10 lbs By soil test 5/1-9/1 5/1-9/1 5/1-9/1 Sun No No No Consult qualified Use in Piedmont and horticulturalist or extension Mountains.May become agent for over-seeding invasive with primary cover NOTES: 1. Seeding rates are for hulled seed unless otherwise noted. 2. Fertilizer&Limestone-rates to be applied in absense of soils tests. Recommended application rate assumes significantly disturbed site soils with little or no residual value. 3. NR means Species not recommended for this region or application area. 4. Invasive designation as determined by the N.C.Exotic Pest Pant Council and N.C.Native Plant Society. 5. Sprigging is not recommended for immediate stabilization unless terrain is flat heavy mulch is applied and no other immediate stabilization method is practical. X1 c 0 a 0 0 0 c fn m' m m 0 m v HERBACEOUS PLANTS-Seeding recommendations for primary stabilization n P p planting 9 Y ongoing program) Table 6.11.b Successful development depends on lantin date effectiveness goal: ti mo.-3 yrs.without an on oin maintenance NON-NATIVE SPECIES Optimal Planting Dates v Broadcast Seeding Fertilization/ n Botanical Name/ Native/ Rates limestone coastal Sun/Shade Riparian Invasive Installation/Maintenance Common Name Cultivar Introduced lbs/acre lbs/acre Mountains Piedmont Plains tolerant Wetlands Buffers Yes or No Considerations Other information,commentary w Sericea Lespedeza Lespedeza cuneata 1 15 lbs By soil test 9/1-6/1 9/1-5/1 10/1-4/1 Sun NR NR Yes Responds well to controlled Severe Threat Dumont' burns Invasive species l7J rn N TN 0 m co Crown Vetch Securigera vana 1 15 lbs By soil test 3/15-4/30 NR NR Sun NR NR Yes Highly competitive, Prefers neutral soils D (Coronilla varia) not recommended unless U' 0 an acceptable alternative is not available. N Centipede Grass Eremochloa ophiuroi 1 5 lbs By soil test NR Eastern 9/1-5/1 Sun NR NR No Significant maintenance Does not tolerate high traffic. 10 lbs.for road shoulders only may be required to obtain Acceptable for sodding desired cover KY 31 Tall Fescue Schedonorus phoeni I 100 lbs By soil test 8115-5/1 9/1-4/15 9/30-3/15 Sun/ NR NR Yes If utilized,it is imperative Acceptable for sodding (Festuca arundinacea) mod.Shade that maintenance includes a containment plan KY Blue Grass Poe pratensis 1 15 lbs By soil test 8/15-5/1 NR NR Sun NR NR Yes If utilized,it is imperative Prefers neutral soils,highly that maintenance includes competitive,not recommended a containment plan unless an acceptable alternative is not available. Acceptable for sodding A n Hard Fescue Festuca brevipila I 15 lbs By soil test 8/1-6/1 NR NR Shade NR NR No Not recommended for Low growing,bunch grass (Festuca longifolia) slopes greater than 5% M Bermuda Grass Cynodon dacVon I 25 lbs By soil test NR 4/15-6/30 4/15-6/30 Sun NR NR Yes If utilized,it is imperative Extremely aggressive,not that maintenance includes recommended and should be a a containment plan avoided unless an acceptable alternative is not available. May be sodded or sprigged raifill A 4 bG1 tp ~ O l� v 0 0 c CO m' m m P o HERBACEOUS PLANTS-Seeding recommendations for primary stabilization m Successfull development depends on planting date(effectiveness goal: 6 mo.-3 yrs.without an ongoing maintenance program) Table 6.11.c 0 .. NATIVE SPECIES crl IV Optimal Planting Dates N m V See Table 6.11A for Fertilization/ Invasive Botanical Name/ Native/ variety limestone Coastal Sun/Shade Riparian Yes or Installation/Maintenance Other information, Common Name Cultivar Introduced seedling rates Ibs/acre Mountains Piedmont Plains tolerant Wetlands Buffers No Considerations commentary A Switchgrass Panicum virgatum/ N A By soil test 12/1-4/15 NR NR Sun NR Nell drain No Responds well to n Cave-in-Rock only controlled burns. Mix with • P 3 to 5 other seed varieties W rn that have similar soil "i drainage adaptations. t7 switch grass Panicum virgatum/ A By soil test 12/1-4/15 12/1-4/1 12/1-4/1 Sun NR Nell drain No Res onds well to Cn Blackwell N only loontrolled burns. Mix with 3 to 5 other seed varieties D that have similar soil U' p drainage ada tations. 4 N Switchgrass Panicum virgatum/ N A By soil test 12/1-4/15 12/1-4/1 12/14/1 Sun NR Nell drain No Responds well to Shelter only controlled burns. Mix with 3 to 5 other seed varieties that have similar soil drainage adaptations. Switch grass Panicum vir atum/ N A By soil test 12/1-4/15 12/1-4/1 12/14/1 Sun Yes Yes No Responds well to Carthage controlled burns. Mix with 3 to 5 other seed varieties that have similar soil draina a adaptations. Switchgrass Panicum virgatum/ N A By soil test 12/14/15 12/1-4/1 12/14/1 Sun No Poorly No Responds well to Kanlow drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil drainage adaptations. Switchgrass Panicum virgatum/ N A By soil test NR 12/1-5/1 1/1-5/1 Sun No Poorly No I Responds well to Alamo drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil drainage adaptations. Indian grass Sorghastrum nutans/ N B By soil test 12/14/15 12/1-4/1 12/14/1 Sun NR Well No Responds well to Western coastal plain only Rumsey drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil drainage adaptations. Indiangrass Sorghastrum nutans/ N B By soil test 12/1-4/15 12/1-4/1 12/14/1 Sun NR Well No Responds well to Western coastal plain only Osage drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil 00 drainage adaptations. 0 0 0 c CO m' m m 0 HERBACEOUS PLANTS-Seeding recommendations for primary stabilization (D v, Successfull development depends on planting date(effectiveness goal: 6 mo.-3 yrs.without an ongoing maintenance program) Table 6.11.c(con't) In 00 NATIVE SPECIES Optimal Planting Dates m V O See Table n Invasive 6.11.d for Fertilization/ Botanical Name/ Native/ variety limestone Coastal Sun/Shade Riparian Yes or Installation/Maintenance Other information, 4. Common Name Cultivar Introduced seedling rates Ibs/acre Mountains Piedmont Plains tolerant Wetlands Buffers No Considerations commentary W n Indiangrass Sorghastrum nutans/ N B By soil test 12/1-4/15 12/1-4/1 12/1-4/1 Sun NR Well I No Responds well to controlled Western coastal plain only co Cheyenne drained burns.Mix with 3 to 5 other seed W varieties that have similar soil N drainage adaptations. T n Indiangrass Sorghastrum nutans/ N B By soil test NR 12/1-5/1 1/1-5/1 Sun NR Well No Responds well to Only Indiangrass adaptable to Fn cn Lomenta drained controlled burns. Mix with Eastern coastal plain Zone 8 CD 3 to 5 other seed varieties D that have similar soil U' drainage ada tations. cri v N Deertongue Dichanthelium N C By soil test 5/14/15 5/1-4/1 NR Sun& Yes Poorly No Responds well to clandestinum/Tioga Shade drained to controlled burns. Mix with drought 3 to 5 other seed varieties that have similar soil drainage adaptations. Big Bluestem Andropogon gerardii/ N D By soil test 12/14/15 12/1-4/1 NR Sun NR Weill No Responds well to Warm season grass Rountree drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil drainage adaptations. Big Bluestem Andropogon gerardii/ N D By soil test 12/1-4/15 12/1-4/1 NR Sun NR Weill No Responds well to Warm season grass Kaw drained controlled burns. Mix with 3 to 5 other seed varieties In that have similar soil drainage adaptations. n Big Bluestem Andropogon gerardii/ N D By soil test 12/14/15 12/1-411 12/1-5/1 Sun NR Weill No Responds well to Warm season grass M Earl drained controlled burns. Mix with 3 to 5 other seed varieties that have similar soil a drainage adaptations. Little Bluestem Schizach rium N E By soil test 12/1-4/15 NR NR Sun NR Weill No Responds well to Warm season grass scoparium/Aldous drained controlled burns. Mix with a 3 to 5 other seed varieties that have similar soil drainage ads tations. bG1 f0 Little Bluestem Schizach rium N E By soil test 12/14/15 12/1-4/1 NR Sun NR Weill No Responds well to Warm season grass `�• scoparium/Cimmaron drained controlled burns. Mix with � 3 to 5 other seed varieties that have similar soil drainage adaptations. 0-1 J Qn 0 0 0 c rn m' m a m HERBACEOUS PLANTS-Seeding recommendations for primary stabilization -00 Successfull development depends on planting date(effectiveness goal: 6 mo.-3 yrs.without an ongoing maintenance program) Table 6.1 1.c (con't) m o q NATIVE SPECIES -nn Optimal Plantin g Dates rQ m V See Table Invasive p 6.11.d for Fertilization/ Botanical Name/ Native/ variety limestone coastal Sun/Shade Riparian Yes or Installation/Maintenance Other information, Common Name Cultivar Introduced seedling rates Ibs/acre Mountains Piedmont Plains tolerant Wetlands Buffers No Considerations commentary A Little Bluestem Schizach rium N I E By soil test NR NR 12/14/1 Sun NR Welll No _Responds well to Warm season grass -n scoparium/Common drained controlled bums. Mix with coo 3 to 5 other seed varieties OJ that have similar soil N drainage adaptations. (7�T Sweet Woodreed Cinna arundinacea N F By soil test 12/1-4/15 12/1-4/1 12/1-4/1 Sun& Yes Poorly to No Mix with 3 to 5 other seed Warm season grass Fn Cn mod.Shade well drained varieties that have similar CD soil drainage adaptations D cn Rice Cut grass Leersia oryzoides, N B soil test 12/14/15 12/1-4/1 12/1-4/1 Sun Yes Poorly No Mix with 3 to 5 other seed Warm season grass drained varieties that have similar N) N soil drainage adaptations Indian Woodoats Chasmanthium lati olium N By soil test 3/1-5/15 2/15-4/1 2/15-3/2 Sun& NR Well No I Mix with 3 to 5 other seed Cool season grass /15-8/15 /15-1 /1 /1-11/1 mod.Shade drained varieties that have similar soil drainage adaptations it inia Wild Rye El mus irginicus N I B soil test 3/1-5/15 2/15-4/1 2/15-3/2 Sun& NR Well No Mix with 3 to 5 other seed Cool season grass /15-8/15 /15-1 /1 /1-11/1 mod.Shade drained varieties that have similar soil drainage adaptations Eastern Bottlebrush EI mush stri N By soil test 3/1-5/15 2/15-4/11 NR Sun& NR Well No Mix with 3 to 5 other seed Cool season grass rass /15-8/15 /15-1 115 mod.Shade drained varieties that have similar soil drainage adaptations Soft Rush uncus a usus N By soil test 12/1-5/15 12/1-5/1 12/1-4/15 Sun Yes Poorly No Mix with 3 to 5 other seed 8/15-1 /15 /1-11/1 drained varieties that have similar soil drainage adaptations Shallow Sedge Care lurida N L By soil test 12/1-5/15 12/1-5/1 12/1-4/15 Sun I Yes Poorly No Mix with 3 to 5 other seed 8/15-1 /15 /1-11/1 drained varieties that have similar soil drainage adaptations Fox Sedge Care ul inoidea N L By soil test 12/1-5/15 12/1-5/1 12/1-4/15 Sun Yes Poorly No Mix with 3 to 5 other seed 8/15-1 /15 /1-11/1 drained varieties that have similar soil drainage adaptations NO E 1.Seeding rates are for hulled seed unless otherwise noted. 2.Fertilizer&Limestone-rates to be applied in absense of soils tests. Recommended application rate assumes significantly disturbed site soils with little or no residual value. 3.NR means Species not recommended for this region or application area. 4.Native,warm season grasses re uire six or more months to germinate under optimum conditions. If they are planted in the summer,then a whole y ear will have to pass before they germinate. 5.Invasive designation as determined by the N.C.Exotic Pest Pant Council and N.C.Native Plant Society. Sprigging is not recommended for immediate stabilization unless terrain is flat,heavymulch is applied and no other immediate stabilization method is practical. 0 Sodding for immediate stabilization-see primary stabilization charts (other information column)and Section .12. cc 8.Long term stabilization can only be accomplished with an ade uate,immediate,and primary stabilization program. o achieve long term protective cover with the species listed in this chart,the approved plan,construction se uence and maintenance schedule must include sufficient detail to assure vegetation will be established and maintained. o assure the long term protective cover will be established,the reviewing and approving governing body may re uire a performance/maintenance bond. DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 Practice Standards and Specifications Table 6.11.d Seed Mixes for Native Species (Ibs/ac) When Mixed with 3, 4, or 5 Other Native Species (See Table 6.11.a for nurse crop species to be added to these mixes) 3 Other 4 Other 5 Other (total 4 species) (total 5 species) (total 6 species) Switch Grasses (A) 3.5 lbs. 3.0 lbs. 2.5 lbs. Indian Grasses (B) 7.0 lbs. 6.0 lbs. 5.0 lbs. Deertongue (C) 6.0 lbs. 5.0 lbs. 4.0 lbs. Big Bluestem (D) 7.0 lbs. 6.0 lbs. 5.0 lbs. Little Bluestem (E) 7.0 lbs. 6.0 lbs. 5.0 lbs. Sweet Woodreed (F) 2.5 lbs. 2.0 lbs. 1.5 lbs. Rice Cutgrass (G) 6.0 lbs. 5.0 lbs. 4.0 lbs. Indian Woodoats (H) 2.5 lbs. 2.0 lbs. 1.5 lbs. Virginia Wild Rye (1) 6.0 lbs. 5.0 lbs. 4.0 lbs. Eastern Bottlebrush Grass (J) 2.5 lbs. 2.0 lbs. 1.5 lbs. Soft Rush (K) 2.5 lbs. 2.0 lbs. 1.5 lbs. Sedges (L) 2.5 lbs. 2.0 lbs. 1.5 lbs. NOTE: With the native varieties, the seed mix should be in the range of 15 pounds per acre. Depending on availability of native seeds adaptable to North Carolina, the percentage of a particular variety used may be reduced or increased accordingly. Although diversity is desirable, it is imperative that the primary crop develop and become an effective protective cover. In addition to the native species mix, additional nurse crop species must be included to provide immediate stabilization and an adequate ground cover. Rev.5/08 6.11.19 DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 NORTH CAROLINA FARM BUREAU MUTUAL INSURANCE COMPANY, INC. CERTIFICATE OF LIABILITY INSURANCE THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER.THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND,EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW.THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S),AUTHORIZED REPRESENTATIVE OR PRODUCER,AND THE CERTIFICATE HOLDER. IMPORTANT:if the certificate holder is an ADDITIONAL INSURED,the policy(ies)must he endorsed.If SUBROGATION IS WAIVED,subject to the terms and conditions of the policy,certain policies may require an endorsement-A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). INSURED DOUG MALINOWSKI JR CERTIFICATE ORANGE COUNTY PLANNING& NAMEAND DBA WELLSMONT LANDSCAPING HOLDER INSPECTIONS DEPARTMENT ADDRESS 1005 DIMMOCKS MILL ROAD ENGINEERINGISTORMWATER DIVISION HILLSBOROUGH NC 27278 PO BOX 8181 HILLSBOROUGH INC 27278 CSANDT a@ORANGECOUNTYNC.GOV COVERAGES THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED.NOTWITHSTANDING ANY REQUIREMENT,TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN,THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. i x TYPE OF INSURANCE ADOL SUER POLICY NUMBER POLICY EFF POLICY EXP LIMITS MMID MMD ® COMMERCIAL GENERAL LIABILITY X GL 0483161 10/17/2018 10/17/2019 GENERAL AGGREGATE $2 D00,00D -OCCURRENCE PRODUCTS-COMPIOPS AGGREGATE $D GEN'L AGGREGATE APPLIES PER POLICY PERSONAL 8 ADV INJURY $1,000,DOD EACH OCCURRENCE $1,DOD,DOD DAMAGE TO RENTED $100,000 MED EXP[Any one person] $5,000 ❑ EACH OCCURRENCE $ BUSINESSOWNERS AGGREGATE $ AUTOMOBILE LIABILITY (Each COMBINED SINGLE OMIT $1,000,000 ® BAP 2177023 812412019 212412020 SCHEDULED AUTOS BODILY INJURY(Per Person) $ HIREDAUTOS BODILY I NJ U RY(Per acddenl) $ AROPERTYOAMAGE $ NON-OWNED AUTOS Per accident]__ _ GARAGE LIABILITY i � (Other) EgCHOCCURRENGE $1,000,000 M EXCESS LIABILITY— UP 7684782 11/20/2018 11/20/2019 AGGREGATE OCCURRENCE $ _ WC STATUTORY LIMITS ® WORKERS COMPENSATION NIP' AND EMPLOYERS'LIABILITY WC 0253741 812$12019 $12812020 E.L.EACH ACCIDENT $1,000,000 POLICY APPLIES TO THE WORKERS E.L.DISEASE-EA EMPLOYEE $1,DOO,DOO COMPENSATION LAW IN THE STATE OF NC E-L-DISEASE-POLICY LIMIT $1,0001000 OTHER: DESCRIPTION OF OPERATIONS 1 LOCATIONS!VEHICLES: ORANGE COUNTY IS INCLUDED AS ADDITIONAL INSURED CANCELLATION SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED AUTHORIZED REPRESENTATIVE BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN ACCORDANCE WITH THE POLICY PROVISIONS. DATE 8/19/2019 &4 &_ COI 0910 DocuSign Envelope ID: F52521E7-10C1-43F9-B62F-C1E599A5D572 From: Amanda Powell To: Christopher Sandt Subject: [EXTERNAL MAIL!]RE: need new COI for Doug Malinowski Date: Monday,August 19,2019 2:12:58 PM Attachments: 20190819141842232.odf The WC policy has not been paid for the upcoming year yet, but it's not due until 8/28. As long as it's paid by that date, this certificate will be valid. The insured is aware of the due date. Thanks, Amanda From: Christopher Sandt [mailto:csandt@orangecountync.gov] Sent: Monday, August 19, 2019 11:19 AM To: Amanda Powell Cc: Will Laws; doug@wellsmontnc.com Subject: RE: need new COI for Doug Malinowski WARNING: originated outside of •rth Carolina Farm Bureau. • NOT links or attachments unless you recognize the sender and know the content is safe. Hi Amanda, Could you please e-mail me an updated COI for Doug? The one I have currently (attached) shows policy expiration dates that won't cover/overlap an upcoming contract with Doug. Regards, Christopher I Sandt, P.E. Staff Engineer Orange County Planning and Inspections Department [orangecountync.gov] 131 W. Margaret Lane (P.O. Box 8181) Hillsborough, NC 27278 (919) 245-2583 (W) (512) 590-0359 (M) csandt&orangecountync.gov