Appendix a - Preliminary Route Evaluation Study

8/10/2019 Appendix a - Preliminary Route Evaluation Study

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route evafor the Black Oa

Project: Black Oak Wind Farm edr Project No: 11060

Date: March 22, 2013

Introduction

On behalf of Black Oak Wind Farm LLC, edrCompanies (edr) conducted a route evaluat

Black Oak Wind Farm (the Project), located in the Town of Enfield, Tompkins County, New

located approximately 7 miles west of the City of Ithaca, 4 miles northwest of the Newfi

northeast of the Village of Odessa (as measured to the nearest turbine). The Project w

1,060 acres of private land (owned by 6 individual landowners) in an area roughly bound

the south, the Schuyler County line to the west, Weatherby Road to the north, and Conne

The northern extent of the Project area is approximately 2.4 miles south of NYS Route 7

Road. Approximately 2.7 miles of gravel access road will be constructed to access th

Figures 1 and 2 for a regional location map and the Project layout.

Transportation activities during the construction of a wind project will cause temporary in

area roadways served by the Project. This study is intended to support the ongoing devel

to document the existing transportation conditions in the area and identify probable trav

proposed improvements for the oversized transport vehicles.

Methodology

The study methodology was developed to address the needs identified in the scoping do

field inventory, photo documentation, and visual assessment was conducted to evalu

Sample roadway characteristics and conditions were documented. The photo docu


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March 22, 2013Page 2

evaluation. edr was also provided with component specifications and minimum t

documentation from REpower, which is included as Appendix B.

The public roadways in the vicinity of the Project were reviewed for width, physical con

Each intersection along the construction and delivery routes was reviewed to determine w

would be required to accommodate delivery and construction traffic. A further and increa

occur closer to construction as part of the overall construction level engineering for the Pro

will identify a turbine delivery company who will assess (along with REpower) the proposand with the necessary level of engineering.

Prior to construction, the hauling company retained to deliver the turbines will identify the

will analyze the routes to obtain a Special Hauling Permit. A Special Hauling Permit is re

loads that exceed the legal maximum dimensions or weights specified in Section 385 of th

and Traffic Law. Those dimensions and weights include a maximum width of 8 feet 6 inch

feet 6 inches, maximum length of single trailer of 53 feet, and maximum weight of one ax

dimensions and weights associated with the delivery of turbine components to be used

those outlined in the law.

Project Delivery Route

The area in the general vicinity of the Project is served by a network of State, County, a

roads range from two-lane highways with paved shoulders to seasonally maintaine

conducted a desktop assessment to identify the best delivery routes to each proposed w

access to the transmission site, and to locate junctions and areas of the route that would re


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roads were measured, and road conditions were surveyed to identify any areas of con

culverts, and areas of poor road conditions. A further detailed route evaluation study (pro

the selected turbine manufacturer and/or delivery company), road condition survey and

roads, bridges and culverts will be completed immediately prior to construction of the Proje

Delivery of turbine components to the Project area will include the following: turbine blades

rotors; steel reinforcement; substation transformer; stone and concrete. The most challe

turbine blades, tower sections and nacelles due to their abnormal size and weight. It hasfor specialized transportation and delivery companies to have specific trucks for each

anticipated that the deliveries of concrete and steel will be made using different routes

proposed wind turbine site, as these may not qualify as abnormal loads.

Based upon an assessment of the existing conditions, a preliminary delivery route has be

and REpower) from Interstate 81 to each of the proposed wind tower access roads. Both e

one route as being preferred over all others analyzed. The preliminary route is from exit

Whitney Point) onto NYS Route 79 and through the City of Ithaca, to Black Oak Road (in

then to the proposed Project area. See Figure 1 for a depiction of the proposed delivery

photo documentation of the roads proposed to be used for component deliveries. Note th

during this preliminary review but there are several other possible routes that could be use

entry of the turbine components and the selected delivery company chosen for the Projec

will be provided to Tompkins County and the Town of Enfield for review pursuant to the R

will be developed between Black Oak Wind, LLC and the local municipalities.


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has been designated as a highway on which vehicles with these permits can travel, and a

receives truck traffic that exceeds the legal dimensions and weights. The proposed route a

bridge clearances or posted weight restrictions anywhere along the route (Sear-Brown, 20

verified during final engineering for the Project and after the delivery contractor is chose

road in the entirety of the delivery route, and was in good condition at the time of the

representative photos in Appendix A). No obvious vertical or horizontal curve limitations w

during the field investigations. However, there were a few locations where it will likely

vehicles and/or flagmen to navigate the delivery vehicles through constrained roadways Ithaca (see Photos 1 through 15). Some relatively steep grades and horizontal curves

west of the City on NYS Route 79 (Hector Street). There were also no obvious problems

bridges observed on the delivery route along Route 79 (see Photos 17 and 18). Further

culverts will occur during the later stages of the transportation planning process.

Black Oak Road is a County Road (County Road 136) located in the Town of Enfield, and

manner (south of and perpendicular to NYS Route 79). Black Oak Road essentially splits

of the turbines are proposed to use this road for delivery. Black Oak Road is an approxim

road with approximately 3 feet of gravel road shoulder on each side (see Appendix A, Pho

is anticipated that after turning south (or left) onto Black Oak Road from Route 79, 5 of th

be delivered from Black Oak Road (via newly constructed access roads). The intersect

Black Oak Road is generally in good condition (See Figure 3). However, it is possible that

to be widened to accommodate component deliveries. The final limit of intersection impact

widening on the inside and the outside of the curves. A roadside ditch was observed alon

sides of Black Oak Road (see Photos 21 to 23). In addition, overhanging telephone line


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As mentioned above, it is anticipated that 5 of the 7 turbines will be delivered directly fr

remaining 2 turbines are proposed to be delivered from Connecticut Hill Road. Black

intersection with Connecticut Hill Road, is a Town road. The preliminary delivery route w

onto Black Oak Road (from Route 79), and then east (left) onto Connecticut Hill Road (S

Hill Road is also a County Road and shares the designation as County Road 136 with Blac

in road width and characteristics (see Appendix A, Photos 30 to 32). Connecticut Hill

condition and is asphalt with gravel/dirt shoulders on each side. The intersection of Black

Hill Road would likely need to be temporarily widened for turbine component deliveries intersection impacts may be a combination of widening on the inside and the outside of th

roadside ditch at the southeast corner that appears to be a non-jurisdictional waterway, an

sign at the northeast corner that would likely need to be temporarily removed. In addition,

lines may need to be temporarily raised for delivery of turbine components. Buried and

located off the road at the western side of the intersection. See Appendix A, Photos 2

photos of this intersection and Connecticut Hill Road.

Potential Impacts

The route described above has some potentially constraining features, particularly inte

summary of the route constraints and associated impacts necessary to accommodat

identified in Table 1 below. The extent of the roadway segment impacts will be

supplier/contractor prior to Project construction, and coordinated with the relevant State, C

departments (at no expense to these departments) prior to the arrival of OS/OW vehicle

time it is estimated that intersections of public roads will need to be modified to accommod

with a minimum of 150 feet outside turning radius and a maximum 130 feet inside turn


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Table 1. Proposed Delivery Route Constraints and Anticipated Impacts

Location ofConstrainingFeature

TurbinesAccessed

Impacts

Intersection ofBlack Oak Roadand NYS Route 79

1 - 7 Clearing and grubbing of existing vegetation.

Relocating traffic signs, fences, and utility poles.

Grading of the terrain to accommodate the improve

proper drainage.Extension of existing drainage pipes and/or culvert

turns.

Re-establishment of ditch line (if necessary).

Construction of a suitable roadway surface to carr(based on the existing geotechnical conditions).

Intersection ofBlack Oak Road

and ConnecticutHill Road

1, 3 Clearing and grubbing of existing vegetation.

Relocating traffic signs, fences, and utility poles.

Grading of the terrain to accommodate the improveproper drainage.

Extension of existing drainage pipes and/or culvertturns.

Re-establishment of ditch line (if necessary).

Construction of a suitable roadway surface to carr(based on the existing geotechnical conditions).

After further investigation of the ditch located along the eastern side of Black Oak Road,

likely non-jurisdictional and therefore work within this ditch will not require authorization b

Engineers (Corps). The overhanging telephone lines and Stop sign at the intersection

Route 79 and Black Oak Road/Connecticut Hill Road may need to be temporarily removed


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As indicated above, the Project-specific impacts are not anticipated to result in stream or

and fill required for construction activities would comply with the measures set forth in the

during the engineering phase of Project design.

Conclusions

The purpose of this assessment is to determine the probable travel routes and pote

required for delivery of major wind turbine components during the construction of the Blac

for the purpose of determining potential environmental impacts. Two potentially impacteidentified. Several areas with narrow roads/slightly constraining curves were also id

provider experienced with oversized loads will be engaged in the final route assessm

Confirmation of impacts, construction details, traffic control plans, escort vehicles, schedu

and will be required for permit approvals.


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FIGURES


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Appendix A


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Appendix B


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Wi d E C t RE MM82/ MM92/


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Wind Energy Converter REpower MM82/ MM92/MM100/ 3.2M114/ 3.4M104

Specification f or t ransportation, transport roads,access tracks and cranepads

DSG

Change overview

Revision Date Changes

A - Initial version

B 2008-05-06 Content and layout re

C 2008-06-16 Bilingual

D 2008-11-10 Address and linked d

E 2010-09-01 Design of access pat

F 2011-05-25 Table dimensions of and graphics, add a

USG 2011-08-01 Formatting changes;

and Canada

H 2012-06-21 3.1: intergrated a 4.5.1: changed te

requirements Can 4.5.1.1: complete Table V: adapted Page 41: graphics

V Writing errors cha


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Wind Energy Converter REpower MM82/ MM92/


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3.2.4 Drainage ..............................................................................

3.2.5 Quality control......................................................................3.2.6 Quality assurance on construction site ................................3.2.7 Data for the soil expert........................................................3.2.8 Crane technology.................................................................

3.3 Rotor assembly..........................................................................

3.4 Single blade assembly................................................................

3.5 Guidelines for Key Hole (Installations within forested areas) ...

3.6 Access to the WEC for assemblers ............................................

4 Summary and country specific deviations.........................................

4.1 Summary.....................................................................................

4.2 Static plate load test in accordance to DIN 18134 ......................

4.3 Static plate load test in accordance to BS EN 1997-2:2007 and

4.3.1 Equipment............................................................................4.3.2 Preparing the test location..................................................4.3.3 Type of test ..........................................................................4.3.4 Parameters and Tolerances ................................................4.3.5 Interpretation of the test.......................................................4.3.6 Reporting .............................................................................

4.4 Static plate load test in accordance to NF P 94-117-1:2000-04 .

4.5 Deviations relevant for the US and Canadian market................

4.5.1 Site/Access Road Design and Construction.......................4.5.2 Crane Pad Design and Construction ...................................4.5.3 Design..................................................................................4.5.4 Testing and Inspection........................................................

4.5.5 Compaction Testing Method................................................4.5.6 Proof- and Test-Rolling Method...........................................

Table I: Grading curve road-base 0/32......................................................

Table II: Grading curve sub-base 0/56......................................................

Wind Energy Converter REpower MM82/ MM92/D


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DSG

1 General

1.1 Introduction

The present specifications of the transportation paths and cagreement between the parties regarding the precise dessections. Both parties accept this agreement as a contractual

The precise implementation of the requirements/dimensionspecifications ensures that the installation of the wind turbinand at the cost agreed to in the contract. Non-compliance canand costs; in especially severe cases, it may even affect osafety during the installation.

As a result, the following is agreed to:

If the requirements/dimensions determined in these spwith, the installation of the system at the cost, determined in the con-tract shall be considered as bind

If the requirements/dimensions determined in these

complied with, an installation is generally still possiblean onsite inspection as well as a project-specific approv

These specifications define the prerequisites, ambient conauxiliary means required for the flawless delivery, storacompliance ensures a smooth procedure in terms of logistics,and occupational health and safety.

REpower recommends taking these specifications into cplanning of the construction site and/or the construction roadssolutions for both sides to be found.

Wind Energy Converter REpower MM82/ MM92/D


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gy pMM100/ 3.2M114/ 3.4M104


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In addition, it must be ensured that the various transport v

components can move alongside each other on the roads of that the corresponding options for passing and turning are ava

As a result, it is agreed that a final coordination should take sites at the latest 4 weeks prior to beginning work on the trapads. Information provided regarding required parking spaturning and other special agreements regarding traffic managinto consideration in the planning, where technically possible.

1.3 Vehicles

The following vehicle types, frequencies and loads are typicand are to be taken into consideration in the planning:

Foundation construction and concrete tower:a) MM-59 to 100 m: approx. 45 concrete vehicles as w

vehicles for construction steel, tocasings, etc.

b) 3.XM-80/100 m: up to 80 concrete vehicles as vehicles for construction steel, tocasings, etc.

c) 3.XM-123/128/143 m:up to 100 concrete vehicles as vehicles for construction steel, to

casings and prefabricated tower e

Mobilization and Demobilization of the main crane:a) MM-59 up to 100 m: up to approx. 24 vehiclesb) 3.XM-80/100 m: up to approx. 28 vehiclesc) 3.XM-123/128/143 m: up to approx. 50 ve

Transport vehicles for wind turbine components:

a) MM-59 up to 100 m: approx. 8 - 11 heavy load vehicleb) 3.XM-80/100 m: approx. 10-13 heavy load c) 3.XM-123/128/143 m: up to approx

Additional transport will be conducted with vehicles from


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Wind Energy Converter REpower MM82/ MM92/MM100/ 3 2M114/ 3 4M104

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MM100/ 3.2M114/ 3.4M104Specification f or t ransportation, transport roads,

access tracks and cranepads

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Only the lifting equipment approved by REpower Systems m

equipment must have been tested and approved and mustdamage or contamination. The use of chains inside the larglowed under any circumstances.The loading and hoisting instructions in the respectively complied with for the handling / hoisting of components. All nthe respective turbines are available from REpower upon requ

1.6 Packaging and Storage

The packaging must protect the WEC components againsconditions during transport and storage.The equipment is generally prepared for storage for up to factory. In the event of longer storage of the equipment and/oin the event of difficult climatic storage conditions, please consnecessary documents of the respective turbines are availabrequest.

1.7 Specific information regarding individual turbine compon

1.7.1 Tower sections

The tower sections must be sealed with tarpaulins on the flathe entry of dirt and water. During storage and transport it muis no direct contact of the tower wall with rough and sharp-edand obstacles which might cause damage to the varnish coat.

If tower components are loaded and transported with transpocare is taken while docking the transport vehicles to the toweavoid damaging the tower flange. Furthermore, ensure that thefirmly tied and sealed so that no dirt and water can penetduring transport.

The set transport height must be checked and adapted conditions prior to starting the haul. If needed, a second persowhen passing viaducts and narrow passages.

1.7.2 Blades


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1.7.4 Nacelle

After handling the nacelle must be sealed at the front with a taneither dirty water nor dust can enter the interior of the nacelof the nacelle must be sealed in such way that it cannot vibrations or the effect of the relative wind during transponacelle it must also be observed that the nacelle must onlcovers and clean working gloves. The nacelle roof must be fafter each handling.

1.7.5 Particularit ies of the 3.2M/3.4M

Nacelle hoodThe nacelle hood of the 3 XM is disassembled for transport different vehicle. The hood is to be placed on squared construction site so that it is not soiled or damaged due to con

Drive trainThe drive train may only be transported on the provided transin shrink wrap to protect it from soiling. The foil must be inspestorage.

AccessoriesThe accessories of the turbines will be transported in 40 foot the event of long storage periods, ensure that no rainwater c

The tarpaulin can also be propped up from below to ensurdrain.

A packing list of the respective turbines is available from REpo

2 Transport

2.1 Public roads

The following applies to public roads:

The precise routing and scheduled delivery date are only c


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2.2 Parking on publ ic roadsThe following generally applies:

The heavy haulage transport authorization incl. police escort site entrance, i.e. when leaving the public and usable roads. and from the construction site via public roads is de-fined by of prescribed routes.

Parking the hauls in public traffic areas in front of the construcpossible in individual and authorized exceptional cases, i.e. and adequate passing and turning facilities must be providedsite for the hauls.

If the vehicles cannot be parked within the construction sitemust be sealed off, which must be applied for by the responsthe local authorities prior to starting construction. The approva

The parking space must be adequately secured ("No entry" simpeding other road users or exposing them to unexpected da

Parking the heavy goods transports in a public traffic aexceptional cases and in coordination with REpower, thethe authorit ies! Other country-specific f ramework conditio

side Germany) must be coordinated and observed by accordingly.

2.3 Construction site access

The construction site access starts at the end of the public roa

On all construction roads leading to WEC locations of REpospeed limit apply. This is, among other things, to avoid dust and for reasons of occupational safety.

The transport permits usually applies to both the loaded and uempty hauls leave the construction site via the same route on


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The transfer point of responsibility for road construction chan

with REpower on a project-specific basis. The basis for thicreated by REpower.

2.4 Construction site roads

2.4.1 Requirement

During the installation and the whole operating time of the Wthat the WEC can be accessed by cranes and transport v

service calls or repair work. The roads, paths, bridges etc. mand approved for passage by vehicles with an axle load of minAgricultural and forest roads may feature ditches or bridgesnecessary load requirements.Load reinforcements or a parallel passage via mobile bridges

The following applies in principle: Width of the drivable surfaces min. 4.5 m. The drivable width is to be increased in curves. An e

curve is described in annexes IV and V. In the event are to be adjusted correspondingly.

Lateral gradient of the road with level surface layer max If the surface layer is designed as a straight cross fa

road to the outer edge, the lateral gradient is max. 3. The slope angle must be constructed at a ratio of 1:2. The surface of the construction road must be of a ty

damage to tires and does not permit any sersaponification.

All layers must be machine compacted in layers. The relevantapply to all earthworks.

The support layer material must be installed with a proctorcompaction quality must be checked using static plate load tDIN 18134 or the corresponding country specific standard (senumber of supervisory checks must be planned by the contrato be carried out on each installed layer (min. 1 static triaadditional tests can be designed as dynamic tests provide


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Specification f or t ransportation, transport roads,


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2.4.2 Requirements for gradients

The table below indicates the road surface to be used for vario

7 % Normal design in accordance with chapter

712 % Bonded top layer; deviations can only be with the project manager of REpower.

>12 % Bonded top layer, additionally special trans

Summits or raised heights within the construction roads musway that they do not exceed 2 or 3.5 % over 50 m of rlongitudinal radii (convex or concave) must not be less then respected, ground contact of the load may cause severe damThe ground clearance of the vehicles must be at least 10 - 15

Fig.2

Fig.3


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2.4.3 Recommendation

1:2

0.05 m compacted sand

10 cm top layer 0/32

1:2

Street width min. 4.50 m

0.60 m gravel supporting layer 0/5

Fleece GRK 3 Soil layer

Fig.4

Schematic design of the access paths

For construction of roads and crane pads the support layer (with a grain of 0/56 mm grade, see grading curve range in dependent on the sub grade in order to achieve the required Emodule) on a compacted sand sub grade (approx. 0.05 msupport layer the humous top soil must be removed completthe soil layer must be stabilized accordingly (see below).

The material for the surface layer (layer thickness 10 cm) mus

size of 32 mm, see grading curve range in table I.

The material must be graded in accordance with the appendsufficient fine material. Natural gravel is problematic durinbecause it tends to absorb water and saponify. Granite gravel

To prevent silting and displacement, a tear-proof fleece of rob(required push-through force FP.5 % 2.5 kN; required mass 5 % 250 g/m) is required between the foundation (sand(gravel 0/56).Dependent on the ground characteristics at the location thdiffer.


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SG

80 MN/m2 and Ev2: Ev1 2.5), must therefore already be

using test fields. The result must be submitted to REpowimplementation.Deviations from the above-mentioned specification are only with the REpower project manager and eventually a soil exper

Especially during the construction or delivery phasecomponents a firm and leveled access path must be availholes, accumulations, roots etc. must be repaired ptransport. The necessary measures are mutually agreed w

If due to unsuitable or poor construction materials in thconstruction road damage tires or other vehicle componentshaulage company or crane company may be asserted againThe same applies for damage to the major components or dprocess.

Note: Heavy haulage vehicles are designed for paved roadsvehicles.

2.4.4 Implementation of the construction site acceptance

If the requirements/dimensions determined in this specificatiowith in whole or in part, an exact, project-specific inspection o

must take place on site. This will generally be conducted by construction site management department and/or project logisAfter a successful on-site inspection, the customer will be statement in a timely manner stating whether and within whican installation can take place. If an on site inspection has written statement has been submitted, this will replace thprovided here.

2.5 Vehic le delivery and parking facili tiesThe contractually responsible party must ensure that all cturbine can arrive and be parked on the construction site customs and legal regulations of the country.


Specification f or t ransportation transport roads

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access tracks and cranepads G

2.6 Offloading activi ties

The wearing of high-visibility clothing is mandatory on aREpower Systems SE.Safety helmets, safety boots, protective gloves, protectidonned prior to unloading. The instructions of the sfollowed. Violations are punished with the immediateconstruction site.

The components are delivered in the direction required by thea turning opportunity near the crane pad or a separate exit rousite must be available.Reversing the component transports in loaded condition consultation with the REpower project manager and the haula

If the assembly area has to be entered in reverse, this is consultation and approval by the freight carrier, the crane com

project management/logistics. The resulting additional costs, the access path by up to 25 m past the assembly area andborne by the responsible party. (See drawing assembly a3.2M114/3.4M104).

2.7 Storage facili ties

2.7.1 Single turbines / two turbines

It is useful to prepare a storage facility for tower sections,blades near the assembly area to facilitate the intermediate stoin case of a disrupted delivery and assembly process dueunscheduled waiting times and the corresponding transportarise.

2.7.2 Wind farms with more then 2 turbines

If WEC locations in restricted areas do not permit the storageassembly areas, an advance delivery and storage area is requThis allows an advance component delivery and ensures components for its assembly on the construction site.As example, the storage area for 2 wind turbines of type MM


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Specification f or t ransportation transport roads

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Fig.6a

Fig.6b(Do not scale. Shown crane configuration and dimensions a

f f



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p p , p ,


3.2 Requirements according to design and bearing capacity

The crane hardstanding shall be designed by a competenresponsibilities under the local CDM (Construction, DesRegulations:

D, IT: DIN/Euronorm for geotechnical recommendationsF: NF-P normsUK: BS-UK guidance: Working platforms for Tracked Plants

US: According to standards described in section 4CAN: According to standards described in section 4AUS: According to local standards

3.2.1 Bearing capacity

The crane hardstanding shall be designed to support a max(220kN/m for a crawler crane) below the load distribution-platcoming out of the maximum force of 200tons (240tons by Cload distribution-plates into the crane area. This design shbearing capacity of the crane hardstanding and substrata undand based on appropriately sized areas for the anticipated clife of the working platform shall be according to what is ocontract between client and REpower.

3.2.2 Soil Investigations

The design shall be based on suitable and sufficient ground isigner shall confirm that they are satisfied with the ground iThe design shall identify any specific hazards that may be pincluding soft or hard spots in the risk assessment and spmitigate hard/soft spots during installation that shall provide athe working platform.

The contractor may wish to consider design, installation working platform in accordance with the Country specific stathe UK-guidance prepared by BRE in their document entitledTracked Plants).



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The crane pad must be level. Some tolerance is permitted,

should not be exceeded:

mobile crane 2 crawler crane 1.5

3.2.4 Drainage

The design of the hardstanding shall ensure that rainwater

possible from the crane pad. The working platform shall bproposed maintenance regime shall ensure that this is maintaWhere necessary the designer shall consider the use of a fithe sub-strata where it is fine grained to maintain a freecontractor should consider the bearing capacity in wet and dry

3.2.5 Quality control

The contractor shall make available all calculations and sptheir designer for the crane hardstanding to REpower for insRisk Assessments shall be included within the Health and Sashall confirm that the hardstanding has been installed in accand provide details of any requirements for maintenance ofcontractor shall hand over the working platform with a clworking platform boundary.

3.2.6 Quality assurance on construction siteThe Contractor shall undertake a Plate Load Test at each crain accordance with the methodology DIN 18134 or the corresstandard (see section 4). These standards are described in eContractor shall determine the values of Ev1 and Ev2 and the The Contractor shall interpret the results of the tests based according DIN as follows:

For crane pads: Ev2>= 100Mpa and Ev2/Ev1 = 80Mpa and Ev2/Ev1


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Maximum force on tip of crawler 240.0 t

3.2.8 Crane technologyDependent on availability the following cranes can be used:

Mobile crane with telescopic boom With or withMobile crane with lattice boom With or withCrawler crane with lattice boom With or withMobile crane for unloading and

pre-assembly

Min. size 12

Special cranes (project-specific special solution)Narrow-track crawler crane with latticeboom(to be agreed project-specifically asthere are special path requirements:250kN/m, negotiable width > 5.5 m)

With or with

The crane actually used is determined by the dimensioplus rotor hub, the nacelle weight of the WEC and the cranes at the time of assembly.

3.3 Rotor assembly

For the rotor assembly access to an area within a radius of

must be made available and granted for REpower personnespecial measures, such as individual blade assembly, muREpower.For the pre-assembly of the rotor the height difference in the tthan ~1 m between the support points. This is measured fromhub frame up to the location of the blade pillow blocks.


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Specification f or t ransportation, transport roads,access tracks and crane pads

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Fig.8 The above graphic gives an indication how the situation

3.5 Guidelines for Key Hole (Installations within forested a

This chapter is intended as an advisory. It shows a solutioturbines within heavily forested areas and the tree felling whicnoted that due to many variables each site must be appsufficient site assessments before installation and turbine suitHowever it is felt that this document will aid our clients and

installation in forestry areas.

Clear felling is required to construct the hard stand and foundrotor star is assembled. The amount of felling required aroundwithin the cross hatch area and will depend on the length


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Fig.9


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Verification of stability of access paths and crane pads with ma

min. 1 stability verification per 10 crane pads (for the m min. 1 stability verification (verification of the bearing

endangered areas e.g. construction roads or crane loc

The minimum dimensions of the access paths and crane ptables III, IV, V and the figure 12.

4.2 Static plate load test in accordance to DIN 18134

If not otherwise specified in the following subsections the following requirements does apply:

Measuring the time- and load-dependent settlemstandardized pressure plate

Pressure plate diameter = 30 cm Load application by hydraulic cylinder with a counterwei Reduction of the pressure load to a reference pressu

load application (2nd cycle) Holding the respective pressure stages for a defined pe

the overall test approx. 20 30 min. The evaluation of the pressure settlement curves of th

provides the respective Young's modulus Ev1 (cycle and Ev2 (cycle 2, repeated load application). The ratio of Ev2 / Ev1 is a measure for the compressi

layer. The greater this value, the poorer the compressThe best possible value is 1.

The Young's modulus is the measure for the stiffness (acapacity) of the support layer. The greater the valuelayer.

The unit of Ev1 and Ev2 is MN/m = MPa

The threshold values are:

F d E 2 100 MN/ E 2 / E 1 2 5



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The objective of the static plate load test shall be to measure the t

settlement under a standard pressure plate to determine the stiffand to validate the suitability of the working platform.

4.3.1 Equipment

A rigid circular base plate of minimum 600mm diameter for abe used.

Loading plate shall be of rigid construction and able to base plate.

Loading apparatus able to apply pressure of 20kN/mmaximum applied pressure of 400kN/m (for a 600mm diamthis is an applied load of approximately 11.3t).

Calibrated force measurement systemDeformation measurement system.

4.3.2 Preparing the test location

The test shall be carried out at the surface of the working platformis free from large gravel or cobble sized fragments.

4.3.3 Type of test

The test shall be carried out as an incremental loading test. Theapplied loads shall be applied in stages and each maintained decreases below 0.05mm/s:

1. 50kN/m2. 100kN/m3. 200kN/m4. 0kN/m5. 200kN/m6. 400kN/m

4.3.4 Parameters and Tolerances

The following parameters shall be determined during the plate loaprecision are as follows:

P t U it A



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Determination of the ratio of Ev2/Ev12

The threshold values are:For crane pads:Ev2 >= 100MPa and Ev2/Ev1 = 80MPa and Ev2/Ev1


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4.5.1 Site/Access Road Design and ConstructionAll site and access roads (site roads) must be completed component delivery and must be maintained during the conscommissioning period. In addition, road maintenance must bService Contract during and after this period. The following resurface upon which a delivery or similar truck is expected todelivering all turbine components to the respective turbinCustomer may request changes be made to this specificaapproved by REpower prior to commencement of civil site wor

The site road design must be stamped by a licensed engREpower 1 month prior to start of delivery of turbine componbe usable in all weather conditions and comply with the follow

Site roads must be designed to withstand the following l

a) 15 metric ton per axle in wet or dry conditions. Tsingle axle equipped with dual wheels or super-sin800 kPa and a maximum allowable rut depth of 13

b) Minimum load bearing capacity of 215 kPa (4,500

Minimum width of 5 m (16.4 ft) wide which needs to bcomplete width. The cross slope from the centerline mmay need to be widened up to 10 meters depend

Fig.11



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>12 % Bonded top layer, additionally special trans

Lateral cross-fall grade of minimum 0.5 % and maximumdrainage away from site road.

Vertical curves (convex and concave) must have a mradius.

Maximum vertical irregularities in road surfaces must nwithin a 30 m (100 ft) run.

The intersections of site roads and public roads accommodate temporary access with a minimum 45 mradius and a maximum 40 m (130 ft) inside turning radiuculverts and associated road widening as required to co

Site roads must be deforested and free from overheadorder to provide a clear corridor of a minimum 6 m (20high.

All drainage resulting from site roads shall be designedor under the roads to allow drainage to original low-lying

All overhead obstructions identified by REpower must bprior to the start of turbine component deliveries.

Any site road that dead ends (e.g. turbine pad) must hafacility which allows vehicles to turn around and travel troad. This turnaround facility should be a circular or haA circular turnaround facility shall have a radius of 45

configuration shall have a min. turning radius of 45 m (long by 5 (16 ft) m wide legs.

Lay-bys must be constructed with minimum dimensionand 5 m (16 ft) wide and constructed adjacent to the roa



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4.5.1.1 Different possibilities for road width

Depending on the Project Specific features (Site morphorestrictions on constructions, time frame for installation, Wproject the best combination of road width and crane type shown in the following table:

Crane type

Road width

Standard

crawler crane

Narrowtrack

crawler crane

Mobile

boom cra

5m Completedisassembly

Completedisassembly

Partialdisassemneeded

5.5m Completedisassembly

Possibility todrive betweenHard Stands(depending onroadconditions).Rare availability


10.0m Possibility todrive betweenHard Stands

(depending onroadconditions)

Possibility todrive betweenHard Stands

(depending onroadconditions)


Note: The table above gives an indication regarding teclimitation of each crane type. Additional commercial factors suin the region and cost level of each type of crane should be Project Specific before selecting the right combinatManagement is available to provide support on performing this

4.5.2 Crane Pad Design and Construct ion

This section is provided to specify the requirements of the cra



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The crane pad must provide a minimum ground bearin

tested at each corner of the pad. The recommendedcompliance with the stamped drawings and calculations The crane pad shoulder slopes may not exceed 45 degr All drainage resulting from crane pad construction sh

lying locations. If the main crane has a lattice jib, a trestle area an

required to build up the jib. The assist crane will requirspecification as the main crane pad except that the di

(65 ft) by 9 m (30 ft) or per the BOP requirements. If the main crane has a lattice boom, then a boom c

required. This must be alongside the crane path withand length of 140 m (460 ft) adjacent to the crane path.

When a lattice jib is used, the rigging area for the mminimum length equal to the wind turbine hub height length parallel to the site road. The usable width mus

ft).

4.5.3 Design

One month prior to delivery of any turbine components, the PREpower the stamped road design with supporting calculattests performed by a third-party testing agency. The Purinformation and provide written confirmation that the site

accordance with this specification. At a minimum, this docume

Stamped road design drawings and calculations for roarequirements specified in this document.

Results of third-party field tests performed by a third-pthe methods outlined in either Section 4.1 or 4.2 of this d

4.5.4 Testing and Inspection

Prior to delivery of turbine installation equipment or comregarding the construction and test results of the site preparatquality assurance and proof that the access roads are readrequirement. The Purchaser may choose to perform the qua


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Table I: Grading curve road-base 0/32



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Table II: Grading curve sub-base 0/56



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Table III: Dimensions for the MM82 and MM92Width of access paths

Funnel shaped access

Funnel shaped exit

Curve radiuses internaextern

Road width in the cuSwing-over area ext

Swing-over area length Free of obstacles over 2 m width

Crane pad59 + 69 m HH length

width 80 + 100 m HH length K1

width

Boom assembly area length (Length dependent on hub height) width

Slew ring center/foundation center Distance crane pad to foundation center

Rotor pre-assembly area

Road length

At the foundation

WEC access



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Table IV: Dimensions for the MM100

Width of access paths


Funnel shaped exit

Curve radiuses internaexternRoad width in the cuSwing-over area ext

Swing-over area length Free of obstacles over 2 m width

Crane pad80 + 100 m HH length K1

width


Slew ring center/foundation center

Distance crane pad to foundation center

Rotor pre-assembly area

Road length At the foundation

WEC access



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Table V: Dimensions for the 3.2M114 and 3.4M104

Width of access paths


Funnel shaped exit

Curve radius internaexternRoad width in the cuSwing-over area ext

Swing-over area length Free of obstacles width

Crane pad length (up to 100 m HH) length (over 100 m HH) width (up to 100m HH)

width (over 100m HH)


Slew ring center/foundation center Distance crane pad to foundation center

Rotor pre-assembly area 3.4M 3.2M

Road length At the foundation

WEC access



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Fig.12a


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Appendix a - Preliminary Route Evaluation Study

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