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November 1, 2016

Sanborn Bike Park Specifics

SVMTBSilicon Valley Mountain Bikers

Sanborn'Bike'Park'Specifics'–'November'1,'2016'Design,'Construction,'Costs,'and'Operations !

Trail!Layout!

IMBA!Trail!Solutions!(TS)!performed!two!site!visits!between!July!and!August!2016.!During!

those!site!visits!TS!staff!flagged!and!inventoried!the!Practice!Loop,!BiIDirectional!Green!

Trail!(climbing)optimized),!Blue!Trail,!and!Black!Trail.!!

TS!staff!also!reviewed!the!“Mountain!Top”!site!where!the!pump!tracks,!skills!trails,!slope!

style!trails,!dirt!jumps,!flex/demo!spaces!will!be!located!along!with!both!upper!and!lower!

parking!areas.*))

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*Additional)Bike)Park)and)Trail)layout)maps)can)be)found)in)the)appendix)to)this)document.))

SANBORN BIKE PARK SPECIFICS – NOVEMBER 1, 2016

Due!to!the!existing!thick!vegetation!throughout!the!former!Christmas!Tree!Farm,!TS!staff!

walked!and!surveyed!the!area.!They!did!not!flag!and!inventory!specific!details!of!the!pump!

tracks,!skills!trails,!slope!style!trails,!dirt!jumps,!and!flex/demo!spaces.!TS!trail!specialist!

used!Lidar!twoIfoot!contour!data!to!conceptually!design!the!“Mountain!Top”!bike!park!

components.!It!is!recommended!that!the!detailed!design!takes!place!once!the!site!vegetation!

is!thinned!and/or!cleared!prior!to!construction.!!

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Trail/AreaSlope,Length,

(miles)Top,Elevation,

(feet)Bottom,Elevation,

(feet)Vertical,(feet)

Green,Bi9Directional 2.39 2,510 1,918 592Blue*(Upper) 0.91 2,510 2,218 292Blue*(Lower) 0.84 2,217 1,912 305Black*(Upper) 0.57 2,477 2,212 265Black*(Lower) 0.63 2,211 1,919 292Practice,Loop 0.72 2,510 2,402 108

Practice,Loop *(East*Link) 0.03 2,481 2,469 12Practice,Loop *(West*Link) 0.08 2,490 2,469 21

Skills,Loop,9Beginner 0.41 2,507 2,461 46Skills,Loops,9,Intermediate 0.24 2,501 2,467 34

Skills,Loop,9,Advanced 0.18 2,496 2,471 25Slope,Style,9,Small 0.12 2,498 2,473 25

Slope,Style,9,Medium 0.17 2,498 2,473 25Slope,Style,9,Large 0.17 2,503 2,461 42Slope,Style,9,Xlarge 0.27 2,503 2,411 92Dirt,Jumps,9,Small 0.1 2,503 2,460 43

Dirt,Jumps,9,Medium 0.1 2,503 2,460 43Dirt,Jumps,9,Large 0.1 2,503 2,460 43Dirt,Jumps,9,Xlarge 0.1 2,503 2,460 43

Total*Miles 8.13

Area !(sq.ft.) Area !(acre)

2,621 0.069,788 0.2210,358 0.2411,600 0.27

Tot4Pump4TrackBeginner4Pump4TrackBeg/Inter4Pump4TrackAdvanced4Pump4Track

SANBORN BIKE PARK SPECIFICS – NOVEMBER 1, 2016

Bike!Park!Capacity!

The!trail!layout,!as!described!above,!was!used!as!a!basis!to!calculate!the!overall!Bike!Park!

capacity.!The!calculations!result!in!a!Riders!At!One!Time!(RAOT)!of!428!riders.*!The!ROAT!is!not!considered!a!peak!usage!calculation,!but!rather!strives!to!outline!a!10th!busiest!period!of!

time.!Peak!numbers!are!to!be!expected!during!the!initial!opening!of!the!park,!during!holiday!

and!event!weekends.!!

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Considering!the!428!RAOT!and!a!potential!turnover!of!1.5!times!per!weekday!and!up!to!4!

times!each!weekend!day!day,!it!can!be!estimated!that!upward!of!650!to!1,700!riders!will!

visit!the!Bike!Park!during!a!full!day!of!operation.!!

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*Reasonable)assumptions)of)rider)spacing,)riders)per)acre,)milling)(watching,)staging,)in)parking)lots))were)used)to)calculate)the)capacity.)RAOT)spreadsheets)are)in)the)following)appendix.)))Parking!Lots!

The!following!table!outlines!calculations!that!uses!428!RAOT!to!develop!the!number!of!

required!parking!spaces.!The!calculations!assume!that!there!are!1.5!Bike!Park!riders!in!each!

vehicle!arriving!at!Sanborn!and!that!80%!of!the!vehicles!will!park!at!the!“Mountain!Top”!

and!20%!at!the!bottom!of!the!Blue/Black!Trails.!These!calculations!result!in!showing!285!

spaces!are!needed,!228!at!the!top!and!57!at!the!bottom.!!

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Using)a)density)of)135)cars)per)acre,)the)upper)lot)would)need)to)cover)1.7)acres)and)the)lower)lot)would)need)to)be)just)over)0.4)acres.)

At!this!time,!with!the!information!available!to!TS,!the!overall!bike!park!plan!shows!

202!parking!spaces!at!the!“Mountain!Top”!and!the!potential!for!30I50!spaces!at!the!

bottom!(across!the!road!from!the!John!Nichols!trail!head).!Significant!earthwork!will!

be!needed!to!construct!both!parking!lots.!As!detailed!plans!are!developed,!project!

engineers!should!meet!the!goal!of!285!total!parking!spaces.!!

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*Traffic)counts)may)be)needed)to)analyze)impact)of)increased)traffic)volumes)on)Black)Road.)Increased)volumes)may)require)turn)lanes)to)be)added)adjacent)to)parking)lot)entrances.))

MultipliersROAT 428

Ave.+Vehicle+Occupancy *(AVO) 1.5Req.+Parking+Spaces 285

Upper+Lot+Split *(spaces) 80% 228Lower+Lot+Split+(spaces) 20% 57

Cars+Per+Acre 135Upper+Lot+Acreage 1.69Lower+Lot+Acreage 0.42

Parking(Requirements

SANBORN BIKE PARK SPECIFICS – NOVEMBER 1, 2016

Trail!Inventory!

The!following!inventories!were!collected!during!the!July!and!August!site!visits.!The!noted!

waypoints!are!included!in!the!provided!Google!Earth!KML!files.!!

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Practice Loop - SVMB Sanborn Inventory Feature InventoryWayPoint Feature Size Radius (ft.) Height (ft.) Sideslope % Note/Modifications

172 Roller Small 1 3 Series of 5 rollers173 Berm Small 10 1 10 Left berm174 Berm Small 10 1 10 Right berm175 Berm Small 20 1 15 Left berm with retaining wall. Rocks available on site. Rollers between this and prev turn176 TechFeature Tech root section 20' long177 Berm Small 20 1 20 Right berm178 Berm Small 10 1 20 Left berm with junction option179 Rock Armoring 75' long Rock armored optional climb, rocks on site.180 Rock Technical Rock feature 40' section181 Rock Tech Rock feature between trees, 10' long182 Roller Small 1 3 Series of 10 rollers.183 Berm Small 2 5 Berm-berm between trees.184 TechFeature Technical root climbing option185 TechFeature Series of PBR Skinnies/log rides for 150'186 TechFeature Either tech Rock section or PBR feature.187 Intersection with cut across trail 188 Berm Large 15 6 20 Series of 9 berms. 7 on road, 2 in woods.189 Step-Up Medium Grade reversal 3' deep, step up jump 6' tall 190 Berm Medium 20 4 20 Right berm191 TableTop Medium 4 15192 TechFeature Top of technical Rock climb 150' long.193 TechFeature Tech Rock feature 50' long.194 TechFeature Tech roots section 25' long195 Trail Junction196 TechFeature Log feature 20' long197 TechFeature 20 Hand built tech climb and decend 200' long198 TechFeature 30 Rock decent with rock drop option199 Camel-table-camelSmall 2 20200 Trail Junction201 TechFeature Technical root option 50' long202 Berm Small 10 1 25 4 Climbing switch berms203 TechFeature Technical climbing root section 30' long204 High point

SANBORN BIKE PARK SPECIFICS – NOVEMBER 1, 2016

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Bi-Directional Green Trail (climbing optimized) - SVMB Sanborn Inventory Feature InventoryWayPoint Feature Size Radius (ft.) Height (ft.) Sideslope % Note/Modifications

51 Turns Small 10 2 15 Series of 4 turns52 Roller Small 2 10 6 Rollers 53 Right Turn Medium 20 2 10 Right Turn54 TechFeature Medium 2 30 Tech root option55 TechFeature Medium 2 60 Tech root option56 Retaining wall Medium 2 For protection of tree roots57 Turn Medium 15 258 Emergency Access Crossing old road bed that could work as emergency access.59 Turn Medium 20 2 5060 Turn Small 2 40 Left Turn61 Turn Small 2 40 At emergency access62 Turn Small 2 60 With option to blue trail.63 Turn Small 25 2 6064 Bridge or Rock Armoring 15' long bridge or rock armoring 65 Turn Small 2 40 Left Turn66 Retaining Wall 2 75 30' long retaining wall67 Bridge or Rock Armoring 75 20' Bridge or rock armoring 68 Turn Small 25 2 30 Turn right, view of road.69 Bridge or Rock Armoring 30' Bridge or rock armoring.

101 Turn Small 20 2 40 Left Turn110 Turn Small 25 2 40 Right Turn111 Rock Armoring Rock armored crossing 40' long121 Turn Small 20 2 75 Left Turn131 Turn Small 20 2 40 Right Turn141 Rock Armoring 40 Rock armored crossing 30' long156 Better drain crossing158 Turn Small 20 2 40 Left Turn159 Turn Small 20 2 30 Right Turn160 Bridge or Rock Armoring 60 35' long bridge or armored crossing 161 Turn Small 20 2 60 Left Turn162 Turn Small 15 2 50 Right Turn163 Turn Small 15 4 50 Left turn, close to black trail berm, will need swale separator.164 Turn Small 15 2 40 Right Turn165 Turn Small 10 2 40 Left Turn166 Turn Small 10 2 40 Right Berm167 Turn Small 10 2 40 Left Turn168 Turn Small 10 2 40 Right Turn169 Turn Small 15 2 30 Left Turn170 Turn Small 10 2 30 Right Turn171 Turn Small 10 2 30 Left Turn

SANBORN BIKE PARK SPECIFICS – NOVEMBER 1, 2016

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Blue Trail - SVMB Sanborn Inventory Feature InventoryWayPoint Feature Size Radius (ft.) Height (ft.) Sideslope % Note/Modifications

4 TechFeature Medium 2 15 Filter5 Berm Medium 4 15 Left berm6 Berm Medium 4 15 Right berm7 Berm Medium 4 15 Left berm8 Roller Medium 2 3 6 rollers 20' peak to peak9 Berm Medium 4 10 Left berm

10 TableTop Medium 4 1511 4 Rock retaining wall to protect tree roots, rock available nearby12 TableTop Medium 4 5013 TableTop Medium 4 5014 TableTop Medium 4 1015 Wedge Medium 4 2516 Berm Medium 4 4017 Hip Medium 4 50 Hip (right) 18 TableTop Medium 6 50 4' table with 6' tombstone option19 Step-Up Medium 6 4020 Step-Up Medium 6 50 Step up into left berm. 3' rock ret wall on DH edge of exit. Rock available nearby. Blue to Black transfer option.21 TableTop Medium 4 5022 TableTop Medium 4 5023 TableTop Medium 4 4024 TableTop Medium 4 5025 TableTop Medium 4 6026 Rock Armoring 30 Rock armored crossing, 30 feet long. Potential for one more table prior to crossing.27 Roller Medium 4 40 Set of 6 rollers28 Wedge Medium 4 Wedge with Canon option29 Berm Medium 25 4 40 Bigger radius if we can excavate more.30 Hip Medium 4 50 Hip (right)31 Hip Medium 4 50 Hip (right)32 Roller Small 2 40 Series of insloped rollers around right corner, this will protect tree roots along the outslope.33 Rock Armoring 50 Rock armored g-out, 100' long34 Step-Up Medium 4 4035 TableTop Medium 4 5036 TableTop Medium 4 5037 Rock Armoring 50 Rock armored section, 100 feet long. 3' tall retaining wall 30' of beginning. All rock armoring is optional if cost is a concern.

38 TechFeature 50 Roots!!! 150' long.39 TableTop Medium 4 5040 TableTop Medium 4 4041 Berm Medium 4 60 Left turn, with potential for back-to-back bermage with black. 42 Hip Medium 4 50 Hip (left)43 Hip Medium 4 60 Hip (left)44 Berm Medium 4 40 4' Berm left - retaining wall - 4' berm right.45 Berm Medium 4 40 Berm right46 Canon Medium 4 2547 TableTop Medium 4 4048 Camel Medium 4 40 Camelback - Table - Camelback49 TableTop Medium 4 2550 TableTop Medium 4 30

206 Junction - aerial fly over207 Berm Medium 40 4 20 Right berm.208 TableTop Medium 4 30209 Berm Medium 15 4 40 Left turn210 Berm Medium 15 4 40 Right turn211 TableTop Medium 4 40212 Berm Medium 15 4 40 Left turn213 Berm Medium 15 4 40 Right turn214 Camel Medium 4 40 Camel - camel215 Berm Medium 20 4 20 Left turn216 Roller Medium 4 30 Roll down canon option217 Berm Medium 15 4 50 Right berm218 Step-Down to Step-upMedium 4-6' 40219 Berm Medium 15 4 50 Left turn220 TableTop Medium 4 50221 Berm Medium 15 4 50 Right turn223 TableTop Medium 4 50 Double tables223 Berm Medium 15 4 50 Left berm224 Root drop option 1 60225 Berm Medium 15 4 60 Right turn226 TableTop Medium 4 60 Triple tables227 Berm Medium 15 4 50 Left berm228 Camel-table-camel Medium 4 40 Camel-table-camel229 Berm Medium 20 4 30 Right berm230 Hip to goal post tableMedium 4 40 Hip to goal post table231 Berm Medium 4 15 Four pack of chicane berms.232 Berm Medium 15 4 30 Left berm233 Rock jump option Medium234 RockGarden Medium 15 200' long235 Berm Medium 20 4 20 Right berm 236 Roller Medium 4 30 Enough rollers to make your legs hurt237 Berm Medium 20 4 30 Left turn238 Tech rock gardens Medium 30 250' long239 Berm Medium 20 4 20 Right berm back to back with black line240 TableTop Small 2 40 Quad pack of small tables.241 Berm Medium 50 4 50 Left turn242 Rock Medium 40 Tech Rock section.243 TableTop Medium 4 20 Series of 6 tables244 Merge with black.245 End of trail