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HomeMy WebLinkAbout1.14 Traffic Impact Report Updated 6-22-15 TRAFFIC REPORT FOR 482 COUNTY ROAD 315 GARFIELD COUNTY, COLORADO PARCEL ID: 217918100681 PREPARED FOR: Ken Sack PO Box 351 Rifle, CO 81650 PREPARED BY: High Country Engineering, Inc. 1517 Blake Avenue, Suite 101 Glenwood Springs, CO 81601 (970) 945-8676 March 4th, 2015 Updated: June 22nd, 2015 HCE JOB NUMBER: 2151004.00 Page 2 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report TABLE OF CONTENTS SECTION PAGE I. LOCATION AND DESCRIPTION OF SITE 3 II. EXISTING AND PROPOSED TRAFFIC CONDITIONS 4 III. CONCLUSIONS 6 IV. REFERENCES 6 EXHIBITS: 1. Vicinity Map (8.5” x 11”) 2. Garfield County 2002 Traffic Map 3. Garfield County 2014 Traffic County Sheets Page 3 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report I. LOCATION AND DESCRIPTION OF SITE A. Location The property in question is located at 482 County Road 315, Town of Silt, Colorado. The property is a 35.207 acre tract of land. The site utilizes two accesses, both of them within the property ownership of Ken Sack or his Company entities. The first access is located 1,000 feet south of the intersection of Mamm Creek Road (CR 315) and Airport Road (CR 352). The second access is an additional 4,100 feet south on Mamm Creek Road past the first access (Eagle Springs Ranch Road). The speed limit along County Road 315 for this stretch of road is posted at 35mph and the road averages a 1.5% grade to the north within 800 feet either side of the accesses. A Vicinity Map has been included as Exhibit #1. B. Description of Property The proposed site is approximately 35.207 acres. The west side of the property abuts Mamm Creek Road and parcel number 2177-131-00-303. The south property line abuts parcel number 2179-184-00-720, east property line abuts parcel number 2179-181-00-691 (Eagle Springs Organic, LLC) and the north property line abuts parcel number 2179-181-00-124. The main access to the facility if off of Eagle Springs Ranch Road which will is utilized by the 6 employees during the winter months and cattle delivery trucks, water delivery truck, secondary deliveries such as UPS or FedEx during all times of the year. The main access is not a viable access for large truck delivers due to its grade and width. The secondary access to the site is a 12 foot wide dirt driveway that averages 11.5% in grade. This access is only used by the 6 onsite employees during the summer months and is a gated access with a coded padlock. C. Hours of Operation and Delivery Schedules The site is currently running as a “Custom Exempt” processing facility. The current owner is planning to upgrade his certification to a USDA Certified facility to be able to supply demands from local restaurants and ranchers. The maximum employee count is 6 employees with hours of operations of Monday through Friday from 7am to 3pm. The existing or maximum employee count will not change with this certification change nor will their hours of operation. The main operational change that will cause additional traffic will be the intake of a larger quantity of animals from the local community for butchering. Currently the Exempt facility processes a small amount of outside livestock from the local community. The solid waste removal trucking servicing the site is anticipated to haul waste daily prior to the landfill closure time of 4:30pm. Additional existing trips to the site included the onsite ranch manager who lives at the home on the property, refrigerated meat hauling truck for removal of product, solid waste removal service truck and a water hauling service that delivers potable water to fill the 6,000 gallons of storage on the adjacent property for the processing facility potable water use every two weeks. The water hauling service is anticipated to make one trip every week to deliver 3,000 to 4,000 gallons of potable water. None of these additional trip generators are being included as Page 4 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report loading in this report. All trip generation times will be outside the peak hours of the facility and outside the peak hours of traffic on the roadway, thus they are not pertinent to the calculations. The hours of operation and amount of processing at this location are not variable during the different seasons of the year, thus all operation traffic loads are being considered on a yearly average basis instead of seasonally. II. EXISTING AND PROPOSED TRAFFIC CONDITIONS A. Existing Traffic Counts and Distances (2002 and 2014 ADT Counts) The Garfield County Road and Bridge Department has completed ADT (Average Daily Traffic) counts on Mamm Creek Road just south of the Airport Road intersection in 2014. These counts were completed over a week long traffic counting process. The counts put the ADT at 803 vehicles over that time period. For a comparison count, the “2002 Average Daily Traffic, County Road System, Garfield County, Colorado” map that the county was utilizing for traffic counts at this location ranged from 546 to 770 ADT. The average County growth rate between the 2000 and 2010 population census is shown to be 2.903% growth per year. Extrapolating that rate of growth out to 2015 the 2002 counts would have grown from 792 to 1117 ADT. The 2014 count of 803 falls within this range and is being considered acceptable for use as an updated number due to the downturn of oil and gas operations over the last several years. This report utilized the “A policy on Geometric Design of Highways and Streets, 2011, 6th addition” AASHTO Greenbook criteria to determine the stopping site distances on grade for the two access location. Both locations average a 1.5% grade at the entrance connection and within 500 feet of the access. The Greenbook table 3-2: Stopping Site Distance states at a 3% grade. To be conservative we have utilized that steeper grade distance instead of the 1.5% actual grade. Stopping distances on the down grade are set at 257 feet at 35mph and 237 feet upgrade. The minimum site distance on the northern access is 375’ and the southern access has 1000’ of minimum site distance. Both accesses exceed the stopping distance required for a safe access. The ITE 9th addition manual does not have a section that includes USDA Certified Processing Facility traffic counts. The closest use would be a Warehouse, which I would anticipate to have a slightly higher trip count (1.1 trips per employee) on a daily basis due to the nature of the work at a Warehouse versus a Processing Facility house. It is anticipated that each employee at the facility will account for 1 daily trip per day. This daily trip is already accounted for within the County ADT counts. B. Proposed Traffic Conditions (2015 to 2025) The operations at the site are limited to the size of the facility being run. The operations are limited to 6 employees at the current hours of operation; the delivery of animals is also limited to the amount of square footage available for slaughter and number of employees completing Page 5 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report those operations. There is no anticipated change in the existing site traffic created by the operations over the next 10 year period due to no current expansion plans for the site being anticipated. Additional buildings would need to be constructed to accommodate more of a traffic load to the site. Additional outside sources of animal deliveries will also be relegated to a small number of deliveries on a weekly basis due to the same operation space and employee restriction. Current driveway operations at both the main and secondary access are not anticipated to change over the 10 year period. This report utilized the “A policy on Geometric Design of Highways and Streets, 2011, 6th addition” Greenbook criteria to determine the Peak Hour Traffic loading based on the Garfield County 2014 ADT traffic count of 803. The Greenbook suggest, in section 2-49, that on a typical rural arterial that 25% of the ADT is a conservative number of vehicles to be assumed for the Peak Hour traffic volume that will pass by the access in question. This calculates out to a Peak Hour traffic volume of 201 vehicles, with the current operations traffic counts included within that count. With no additional traffic anticipated to be created by the operations over the next 10 years, the only additional traffic to be added to the roadway ADT would be general county/traffic growth, calculated at 2.903%. Currently 201 vehicles pass by the accesses on the Peak Hour. With the hours of operation falling between 7am and 3pm, this places the traffic entering and exiting the operations outside the standard 8am and 5pm Peak hours. Assuming the worst case scenario that the hours of operation were changed to the Peak Hours, the employees would be entering and exiting the access during the time that 201 vehicles per hour would be passing by. This Peak Hour traffic volume of 201 vehicles per hour would be broken out to 75% of the traffic directed north on Mamm Creek Road and 25% heading south. This calculates out to 151 vehicles utilizing a single lane of traffic over the hour duration, or a single vehicle passing the accesses every 23.8 seconds. This time gap between vehicles is more than adequate for a standard passenger vehicle or semi-truck to complete a turn into or out of the site during the Peak Hours of operation. This amount of average time between oncoming vehicles is not anticipated to cause any traffic backups or disruption of flow on Mamm Creek Road. With the addition of 2.903% traffic over the 10 year time period this average vehicle time gap will decrease to 17.9 seconds with the 75%/25% being factored into the directional split of traffic. (1070 ADT/268PH). This is still more than adequate time between vehicles to make any of the necessary traffic movements into and out of the site with either a passenger or semi- truck without impeding the traffic flow on Mamm Creek Road to a point of causing a traffic backup on the road. The Level of Service is always a major factor in how the flow of traffic is assessed along a stretch of roadway. The AASHTO Greenbook suggests that a level of service D on a Local Rural Rolling roadway type is acceptable for traffic flow (Table 2-5). A level of service D is considered “Approaching Unstable Flow” within Table 2-4. With the amount of traffic that this section of roadway currently sees and is projected to see, the spacing gap time between vehicles will allow for a Level of Service in the Range of A-B, “Free Flow to Reasonably Free Flow”. Page 6 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report III. CONCLUSIONS The overall traffic load coming to and leaving the existing and proposed facilities will have very little impact on the larger traffic loading along Mamm Creek Road. The average time gap between vehicles on Mamm Creek Road will make for easy and safe access onto the site at either entrance location for either passenger or semi-truck vehicles. This traffic analysis will need to be reviewed if the site operations are expanding in the future. IV. References Garfield County, “2002 Average Daily Traffic, County Road System, Garfield County, Colorado” 2014 Garfield County Road Traffic Counts Spread Sheet, Available on-line at Garfield County Road and Bridge Department link. AASHTO “A policy on Geometric Design of Highways and Streets, 2011, 6th addition” Greenbook Institute of Transpiration Engineers, Trip Generation Manual, 9th Edition, Page 7 j:/sdskproj/215/1004/word/482 CR 315 Traffic Impact Report EXHIBITS Vicinity Map 2002 County Traffic Mapping 2014 County Traffic Spreadsheet 1/29/2015 Google M aps https://www.google.com/m aps/@39.5275798,­107.7109222,16z?hl=en 1/1 Map data ©2015 Google 500 ft Traffic, Bicycling, Terrain, Directions EF140 EF243 EF202 EF215 EF201 EF249 EF252 EF313 EF242 EF224 EF256 EF206 EF155 EF200 EF230 EF245 EF204 EF309 EF159 EF401 EF217 EF234 EF205 EF402 EF211 EF209 EF226 EF317 EF207 EF319 EF88 EF134 EF146 EF315 EF301 EF328 EF281 EF492 EF117 EF113 EF271 EF270 EF115 EF314 EF237 EF312 EF109 EF331 EF112 EF267 EF335 EF120 EF280 EF108 EF213 EF222 EF320 EF322 EF408 EF456 EF241 EF114 EF253 EF219 EF346 EF336 EF311 EF247 EF283 EF255 EF405 EF119EF325 EF321 EF141 EF344 EF258 EF306 EF142 EF125 EF275 EF100 EF220 EF302 EF269 EF279 EF137 EF333 EF144 EF300 EF484 EF126 EF298 EF212 EF329 EF268 EF350 EF145 EF404 EF158 EF251 EF214 EF250 EF345 EF150 EF240 EF403 EF284 EF244 EF157 EF239 EF151 EF326 EF342 EF121 EF278 EF170 EF151A EF277 EF491 EF96 EF64 EF327 EF30 EF407 EF210 EF289 EF233 EF282 EF272 EF107 EF260 EF216 EF232 EF257 EF154 EF490 EF228 EF316 EF132 EF324 EF304 EF246 EF124 EF143 EF103 EF355 EF106 EF238EF259 EF293 EF310 EF290 EF300A EF33 EF127 EF307 EF102 EF299 EF163 EF266 EF334 EF303 EF203 EF406 EF352 EF248 EF78 EF168 EF62 EF229 EF265 EF117A EF47 EF273 EF276 EF161 EF333A EF300O EF198 EF69 EF332 EF259A EF152 EF167 EF189 EF373 EF368 EF162 EF352A EF261A EF129 EF82 EF326E EF286 EF296 EF357A EF373D EF81 EF194 EF136 EF470 EF231 EF103C EF502 EF370G EF104 EF287 EF305 EF353 EF409 EF42 EF374G EF133 EF458 EF184 EF483 EF254 EF467 EF318 EF219 EF401 EF335 EF267 EF311 58 7 1 6 3 9 94 3456 4972 14 16 1721 27 51 59 29 89 43 63 40 17 39 90 56 38 85 7919 99 23 76 7687 8459 87766744 4049 2740 43 22 45 89 75 82 48 77 71 12 13 171 812 135 399 260292 393 140120 231 267 106 140 215 211 267 256283 303 325 100 210 122 174 455 154 175 309 525 197 149 144 447 267 128153 277208 112 573182 352 169 123 583 434508459 250144 810 366 783132 415 885799 810 826 275427 628448 211 160 384286186 205 211 594 641531561449 313 809 662 758 332272278 336 230296213 307 427 140 588 312 212 334 816 356 262119 770 931242 119 309553 704204 723 220 230 991734 116 392676820702436 296283 198 126 158 124 212 137186 150 235 195 159 253139490 414141 790 951 317 840698587104 455354394 153193 366 699145583378 291 189600 808 919 159 107 110149 265 253 337 2527 2457 1173 1344 11021000 2670 1577 19791367 1373 12731634 430048131492 1213 1211 13612564 20771991 18211378 1079 1082 1676 1066 2249 1464 1278 1496 1341 26 87 84 301317183 325 961 847 185 189252 183137204 165371196545453354896129 942181333 527 872908728143 193658 453 103 480 868263444 248 260255 283 128 144 2453 24901243 18521421 2031 2705 12091300 1117 1139 £¤325 £¤13 £¤6§¨¦70 2002 Average Daily Traffic,County Road System,Garfi el d County, Colorado 4 0 1 2 3 40.5 Miles 1 inch equa ls 2 .3 miles CR158 at Ram's Horn Lake DISC LA IMER : This ma p was produ ced by Garfie ld Co unty Geograp hic Informatio n S ervices utilizing the ArcInfo Geographic InformationSystem (GIS). Th e GIS an d its compon ents are desig ned as a sou rce of refere nce for answering queries, modeling, andplanning. The GIS is not a su bstitute for o fficial g ove rnme nt reco rd s mainta in ed by the Planning Department, the CountyClerk and Re corders Office, the Assessor's Office, o r fo r any lega l descrip tion information in the chain of title. In addition,the re pre sen tation o f g eograp hic loca tions by the GIS ma y no t b e su bstituted for actual legal surveys. Always refer tothe sources cited for the most curre nt leg al do cumen ta tion utilize d in the co mp osition of this map. The informatio n co ntained herein is b elie ved to be a ccu rate and suita ble for the limited uses set forth above. GarfieldCounty make s no warra nty as to the a ccu racy or suitab lity of a ny info rmation co ntained herein for any other purposes.The u ser sh all a ssu me all risk and re spon sibility for any and all damag es, including consequential damages, which maypropagate from th e user's app lica tion o f this informa tion . All road centerlines w ere collected by Garfield County IT Department's GPS Tech in 2002 using theSokkia GIR1000 GPS System, achieving sub-meter accuracy using data corrected to the SokkiaBase Station with antenna located on the Garfield County Courthouse rooftop. Projection: UTM,Zone 13, Meters, NAD27. COUNTY ROADS CE NTE RLINE SOURCE: l:\roa d_bridge_proje ct\ma ps\traffic4824 Revision 1: 2-18-2003 Parachute Rifle Silt NewCastle GlenwoodSprings §¨¦70 £¤133 £¤82 P I T K I N C O U N T YPITKIN C O U N T Y EAGLE COUNTYEAGLE COUNTYM E S A C O U N T YMESA C O U N T Y R I O B L A N C O C O U N T YRIO B L A N C O C O U N T Y AVE RAGE DAI LY TRAFFIC STATISTI CS SOURCE: ADT data gathered by Garfield County Road & Bridge D ept in cooperation with the Planning Dept.Seven day averaged counts collected between April and October, 2002. Legen d Average Daily T raf fic 1 - 72 73 - 154 155 - 242 243 - 371 372 - 545 546 - 770 771 - 1139 1140 - 1852 1853 - 2705 2706 - 4813 309 RULISON-PARACHUTE RD Beginning of Road 255 309A CEMETERY RD No Data Collected 310 310 Beginning of Road 62 311 DIVIDE CREEK RD Beginning of Road 1352 312 GARFIELD CREEK RD Bridge 335 313 E DIVIDE CREEK RD Beginning of Road 144 314 ALKALI CREEK RD Lower Portion 166 314 ALKALI CREEK RD Upper Portion 34 315 MAMM CREEK RD South of Airport Hill 803 316 KNUCKELS CREEK RD Beginning of Road 67 317 BEAVER CREEK RD Beginning of Road 768 317A SCRIBNER LN Beginning of Road 119 319 WEST MAMM CREEK RD Beginning of Road 802 320 RIFLE-RULISON RD West End 236 321 TAUGHENBAUGH MESA RD Beginning of Road 80 322 SHAEFFER RD Beginning of Road 163 323 RULISON RD beginning of Road 1017 324 MAXFIELD RD Beginning of Road 388 325 PORCUPINE CREEK Beginning of Road 64 326 CHIPPERFIELD LN beginning of Road 107 326E E CHIPPERFIELD LN No Data Collected 327 HALLS GULCH Beginning of Road 230 328 BALDY CREEK No Data Collected 329 SPRUCE CREEK RD Beginning of Road 107 33 33 No Data Collected