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Address Info: 1150 O Street, P.O. Box 758, Greeley, CO 80632 | Phone:
(970) 400-4225
| Fax: (970) 336-7233 | Email:
egesick@weld.gov
| Official: Esther Gesick -
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20201846.tiff
EXHIBIT INVENTORY CONTROL SHEET CASE USR20-0008 - COULSON EXCAVATING COMPANY, INC., AND CROISSANT FAMILY FARM, LLC Exhibit Submitted By Description A. Planning Commission Resolution of Recommendation B. Planning Commission Summary of Hearing (Minutes dated 5/19/2020) C. Planning Services PowerPoint Presentation Noise Analysis by Hankard Environmental D. Planning Services (Received 6/23/2020) Foster Graham Milstein & Request for Additional Development Standard E. Calisher LLP (Received /23/2020 Peter Wayland Email to M. King in Public Works re: Amended F. Weiland, Inc. Aggregate Resource (Received 6/23/2020) 2 Memorandums from M. King re Revisions to G. Public Works Resolution (Received 6/23/2020) Peter Wayland, H. Weiland, Inc. PowerPoint Presentation (Received 6/24/2020) J. K. L. M. N. O. P. Q. R. S. T. U. V. W. 2020-1846 EXHIBIT C J RZO COO Public: hearings concerning this party will be ilearc. before . County Planning Commission and Board of County Commissioners. Both hearings will be helu at: WELD COUNTY ADMINISTRATION BUILDING 1150 "O" Street • Greeley, CO 80631 Planning Lommtssion Hearing will be nein on 20W alt fiesipse Board of County Commissioner Hearing will be held Jr _2_,heiluttAtette, 20W. it 10cOA Applicant• G .H ' ` ►'4 l CODA :ir _ c t% tom+c ' ah F c`1' � Request. A Site Specific Development Plan and a Special Review Permit for open mining (sand, gravel and stone) and processing of minerals. with ancillary operations and equipment Including a Hot Mix Asphalt (HMA) Batch Plant, the exporting of aggregates, Hot Mix Asphalt and Recycled Asphalt, mine office with scale house and scale, a fueling/lubricating station, portable generators, mobile mining equipment parking and storage, and employee and vendor parking outside of subdivisions and historic townsites, in the A (Agricultural) Zone District Case Number �$4Q•✓, S r62•47- FJiR. FURTHER INFORMATION PLEASE CONTACT airtg _ AT THE. WELD COUNTY DEPART-MENL PLANNINC• SERVICES. AT 0?0 353-6Tt7C ext.1 1 r or fR1.lciitiOn[dl information visitwww.wehicountypIafinhii9Cases.ori 1 5 -ChM .'7'.',4./-,•;Ill!'at(j:..11(1191ti 'rI 1•111a. :-IV( ,tJLIn rs,Ia Ott, tzFh'au'l Pit .AN'i :1p1/1 (.'.ills".I10C1i12 '.1I tfript .If /hid*, Cs.. '341111'/ Ji'•-111Jh//'. ; felintll) .MISJI sniP'i i Vi IIIJl4: IIfeie Li n ck: eM41I en'. • u1j/1rr.:$11'1'alll U?.. FauIuu,ii !-v1,9OII%ti'11903 I fkui,1 Jr _ _AP)tj' 1, of: la 1:••. r ' PIA lr-,/ i b• JIt Irr JtW'fl G0•'G9-•ahr.; IrtG. .El- pe wWill S. 1111... i.c.: •ray r•.oar tin �+•n . ,.,n,1 n.......J I••.rlrI cif '...Hunt..r''nrnan9m'. uru WF I rl 1'41 .r• i.rrrnlnr,RT rt?'rlON BUILDING - q.c+-i..y f: r.r :Tli.3t e,00rn aJ I.kmnly k:JMtr -1^..t' r iit.fM1'41* On nnla cr. �r�11ltyyzn:Cyy�a 41.`.st1 AI .: •'•,• JL.4. 711 T'l,FAVI *f�rr- f G F 1111 u,. �. . � .. ... '. wuaw -.su.. • 'Mn..Y'n�.. o..1iYl Q.u.• , r4... c.lIV r . 1111.. • tT.-i•••••1,96‘611• ..I.1. .......�Y .I. y.M.n P . M wm..n: a..- . ••I 1' 4. .. • M *ea.Nnd.,. ...a . +.r .w... .. k.r.wr> * f.v... 1�S rrV: I' IF^an Ir nnman::'J IitAt:L .il&-ArI w.Iu061.6 w-,..r>,'artn.X.1.Al:n'nr -.... .,�.-a -lau.+o'..,yW.y+ wi w:;.,nom —..ur w.. :!'YY'l rM &SS. aft . ..l rm, ",. iM Ka 11 •'•5 .. art . � � .� i,"fit eL f�-1 • �► ) T A&. ++ sap. �� { 1? t.. {t Zoe- rfit, Q• F .F" ay t.i_4•a,r. r a.r ! �... .. L' .J •. ...i .Fit_•r :Ia ‘_- FIJI III. hearinga c;c_intctrnirig thia r _sporty w II he heard ta:'torc the Ceurlty Planning C:nmmigs nn Ana Sl_kif of G_rFll•rty Cornrnissicner . Both hcarertgn will be hell at: WELD COUNTY ADMINISTRATION BUILDING 1150 "0" Street a Greeley, CO 80631 Plannin f} C•nrnntlssltsil is r+_A Will be held on AiN4 6'71 e. Df-' o.r.._,rrl nf Criunty C©mmisstran,.rt Hearing tidal ha hell 1)11 1r�J 't ?.4.. 2000 . at. 10G04 - I _ f : tcit.iesI: r teC70t-4 'F. 'at .Craw•) Lern `ti.&1' CCiNePM-& C.woAmcan- gseta,rau,t. it FCat.r, A ?data Spccttic uevelnnment Plait etnl a °peel& navivw Portrait fur u j i, n...li.ly Land gravel ans.' ciana) anti pencrr.:ciny cif-.w•ala, with *n'ann'y nimrAlrpn% anci a>'quiprnont InrLnrlirag :a Hat Mix A*Clialt iHMA) [Witt!' Plans. Maw axportlria Of annrtntiniea, nut. Mir. Asplleat and Aaicycled A•1,µ alt. II,.'',, wifice rrltin 4.GaaGO snd 4 ePIc'. r. Iurainc. ut.. floating ctation. pnrt.hl.• V.-.narators_ MOnlin r1{n7n•i on, +: r.u.r1 parking ant scnrmq'. Jrl•J and Vrrndor narklnil L'•IJ L.4 LZt v^1 t.t..t,dirlyi.•.n-t and l.i,:ti•r.t tti•vr•• c.;•..c Inc C. { urJrif-IIllufall LV'ic [11141 r.? Case NulliUul to .M.IQ -eZa .Acre* I etj-/ FOR FuRTI !ER INI Vf2MATION PLEASE CON I AL: I �1�'t �/� t'1Jf�4 .^t I I UL. 'A'C:.� 1=1_II_.l'4 I -r T.FRARTMCNT _lr I nNNING SERVICES. AT .»:l fffi. axt ira.CSs.�•'pi For A.ddalJUn_t1 In;,nnl 111 Jl1 vitrIt Ka. w. auh.lncw 1 plo fl�4Saeas cn,i ..r re,nM. f..-...rw'r.r.... _-i•..‘ n rf'n:i"••r.M'•r'—,'' '......Y..n- I.I nrca.., ur,a...a..•M .^•I•.• al Md rwd lkaoSattri.leat'rN.•CI4VOLV•::.S I••.gw y.r•• nm. .•.ns.: •l.n.w....-.vn... .,J .vr...-n a. re yr.. _.. •(�+.•. .. .•. r.. n.nlr r '< s. alt. P, LJurrv-z •.'..nn.r.�..6'• Notice of Sign Posting USR2O-0008 IT a T.fl.lnnr olr••,..la'lira I' YI..$JI. ..r , �.. 1 .1..•il r,. f•Inr.nlr•o ..nnwrllrxlun u a ft.- n 1 'J ,a MI, I TI;i11nnl`• lr ai •w..0 urtm y. VVE.LIU c0Uri 1 Y .ADMINISTRATION Hl Mll ['man 11:iU "c•' .3tt'ett • t.,reelev, s.rr e:rrrt.3 I Ri,.nhlno is rn m', '.:ix 1 'rLS.TIf.p •Nall I:? 'RIO .. -. al. Pat '12a- LIErkee Q •r.u.A .. /. C... .,. Coy, cum - Ir... .14.1.1-. ` 4 —,o .: us t • IZi.f0-1C-4!. rake .nbcm r.r e.. .;..: ..- cl: ..n..- .. .... .I.... ,., .. . - . u.. . .., „„„„„,.,,•vll.a • .. . ...L. I . . • uu .•pr ..w. . P• nin 1...•..,l ca N • a., .' "" .. ' " v... .. na r. _ 4 ..I.ItM n........ ... •. ��. . . at j bLw J: r1 alt yr•rwrld— r::rl+lr, f d? F-YR Pc;RitIER Nrft,C•Al.I PI. V I•f.Em CONTACT ir.1J,CJa&.re_ _ AT 1. 'M-l.11I.:JL•.11 c 0,0RTVO'JTn •L.4tI11NV yi1••attc, set van .In n• w..--aS%')r'I .......b. .IIft.IaraNm. eli —. •cc Internal to site looking north �•` _ n - I . + C. �l�tiu�y�l�7�� ° .vi , t }O�lwl Internal to site looking south Internal to site looking west itiox Hill & Brush Irrigation Ditch Internal site image .. .- -.hN. la _li*eW Ir:J.1'.1R.i.-.l. ijuts 4LiLtxavd • ,44 ".y County Road 13 Looking South' Bokelman/Walters Pit DBMS #.m• 2006-080 Larimer County Special Review # 05-21536 APEN # G710237F Colorado War -water Discharge Permit # COG -5000006 "acilitY #COG -500499 Well Permit # 66399-F View looking east across property from County Road 13 s Larimer County residence, northwest quadrant of County Road 13 at County Road 54 4;,n, ,' ♦-~-yi-r•../' 9• Sinclair and Anadarko tAflibi I 3 d 3 D HANICARD use to a 00 FNVIRONMEN AL ACOUSTICS AND VIBRATION CONSULTING May 26, 2020 Ken Coulson Coulson Excavating 3609 North County Road 13 Loveland, CO 80538 Re: Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant Dear Mr. Coulson, As requested, Hankard Environmental conducted an analysis of noise emissions that will be generated by the proposed Amen Aggregate Resource Mining and Asphalt Plant to be located in Weld County, Colorado. As documented herein, our assessment is that noise levels from the proposed mining operation will be in compliance with applicable limits, provided that certain noise mitigation (reduction) measures are implemented. This letter describes the proposed project, the noise regulations applicable to the project, the methodology used to predict noise levels, the assessment of noise level compliance, and the recommended noise mitigation measures and best practices. PROJECT DESCRIPTION The proposed Amen Aggregate Resource Mining and Asphalt Plant (Project) will be located in Weld County, Colorado just north of Weld County Road (WCR) 54 between County Line Road and WCR 15. Figure 1 shows the Project location and the surrounding area. The proposed operations on the 94.3 -acre site include the mining and processing of aggregate, operation of a hot mix asphalt (HMA) plant, and the import and export of associated material to and from the proposed permit area. The proposed hours of operation are Monday through Saturday from 7:00 am to 7:00 pm, with occasional operation of the HMA plant 24 hours per day seven days a week when needed. The mining operation has been broken up into six cells. The duration of mining is expected to range from one to two years per cell, for a total operation of approximately 10.5 years. The major noise -producing equipment associated with the Project includes an excavator, dump trucks, front end loaders, impact and cone crushers, screens, and the HMA plant. Daily traffic volume due to employees and hauling of material is estimated at 228 heavy vehicle trips and 42 light vehicle trips for a total of 270 daily trips (135 daily round -trips). it COLORADO • WISCONSIN www.hankardinc.com "TANKARDENVIRONMENTAL - c Ac t.)U5il GS AND VIBRATION CONSULTING FIGURE 1 - AMEN PROJECT NOISE ANALYSIS LAYOUT _I" _t _r_F_r_r r r =_z tinr-arr 7300 Mnasp-m-inrit..0 =MP eh Residential Receptors ,�:i Mining Permit Boundary z2, County Mining USR Boundary Berm Mining Planimetrics Parcels 0 Agricultural Public ROW Residential 750 1500 ft Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 2 May 26, 2020 !TA!TANKARDFI NVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING APPLICABLE NOISE REGULATIONS Weld County defines its noise limits in Chapter 14 -- Health and Animals, Article IX Noise, but states that any noise produced in the course of normal mining operations or oil and gas exploration, drilling and production is exempt from these regulations (Section 14-9-60, Exceptions) . Therefore, Weld County noise limits do not apply to this Project. The State of Colorado defines noise limits in the Colorado Revised Statutes (CIS), Title 25, Article 12, Noise Abatement. CRS §25-12 noise limits are listed in Table 1, and depend on the time of day of operations, land use of adjacent properties, and type of operation. There are no applicable exemptions for the proposed Project from these lin.its . TABLE I - Colorado Revised Statutes §25-12 Maximum Permissible Noise Levels (dBA) Daytime���(2) Nighttime)Zone (7:00 am - 7:00 pm) (7:00 pm - 7:00 am) Residential 55 50 Commercial 60 55 Light Industrial 70 65 Industrial 80 75 (1) During the daytime, noise levels can be increased by 10 dBA for 15 minutes in any one -hour period (2) Noise level limit decreases by 5 dBA for intermittent, shrill type sounds Time of Day Typically, the Project will only operate during the daytime (defined by CIS §25-12 as 7:00 am to 7:00 pm). The only potential nighttime (7:00 pm to 7:00 am) operation is the HMA plant to support certain nighttime roadway construction projects. Land Use While Table 1 states "zone," Weld County looks at the actual land "use" with regard to noise regulations. This is a use -by -right submittal, and thus the Project will be an Industrial use and the Industrial noise limits must be met 25 feet outside of the Project boundary. There is also one existing Residential use to the southeast, for which the Project must meet the Residential limits 25 feet inside that property boundary. Furthermore, the Project is committed to meeting Residential limits at all existing residential structures. Type of Operation Three caveats apply to these limits. First, during the daytime, the noise level limit can be increased by 10 dBA. for 15 minutes in any one -hour period. This is applicable to intermittent sources of mining noise, such as earth -moving equipment approaching and receding from the permit boundary. Second, noise level limits are reduced by 5 dBA for intermittent or shrill type sounds, which would apply to "tonal" back-up alarms, but not "broadband" back-up alarms that are not impulsive or shrill. Third, construction activities (i.e., erecting berms, equipment, or structures.) are subject to the Industrial zone limits per CRS §25-12, regardless if the adjacent property has lower limits due to its land use. Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 3 May 26, 2020 !TA!TANKARDFI NVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING NOISE LEVEL PREDICTION METHODOLOGY Noise levels were predicted per International Organization for Standardization (ISO) 9613-2: 1996 - Acoustics - Attenuation of Sound During Propagation Outdoors using the SoundPLAN v8.1 software package. ISO 9613-2:1996 predicts noise levels assuming slight downwind conditions (wind blowing front source to receptor) with an accepted accuracy of ±3 dB out to 1,000 meters. A sample view of the acoustical model is provided in Figure 2. The following describes how the ISO method was applied on this Project. FIGURE 2 - SAMPLE 3D VIEW OF THE AMEN PIT SOUNDPLAN NOISE MODEL Atmospheric Conditions The air temperature, relative humidity, and atmospheric pressure were set to conditions of 10°C, 70%, and 1 atmosphere, respectively. These values represent a low amount of atmospheric absorption of sound available in the ISO 9613-2:1996 method, and result in high levels of sound reaching the receptors. Terrain and Ground Effect The terrain in the Project area was modeled by importing LiDAR data provided by Weiland, Inc. The acoustical effect of the ground can be modeled using ground factors from 1.0 (completely Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 4 May 26, 2020 �1'�T AKA,RD FI NVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING absorptive) to 0.0 (completely reflective) . For this Project we assumed a ground factor of 0.0 for the hard surfaces around the proposed mixing areas and 0.5 for all other areas that include grasses, which is felt to be reasonable and yet still conservative for these predictions. Receptors In the SoundPLAN model, receptors (prediction points) were located at the seven existing residences that are located in the surrounding Agricultural zones and 25 feet inside the one Residential property line to the southeast as shown in Figure 1. Furthermore, sixteen worst -case receptors were also located 25 feet outside the Project property boundary as well. The receptor heights were set to five feet above the ground, as is common practice. Noise Source Levels The sound power levels for each piece of equipment were determined from measurements of the equipment, with some being the actual equipment to be used for the Project. Note that the sound power level is independent of the distance from the source, ground type, etc. and represents all of the sound energy into one point. All noise sources were set to ten feet above the ground. TABLE 2 — Sound Power Levels of Major Noise -Producing Equipment Noise Source Sound Power Level (dBA) Reference Hot Mix Asphalt Plant 114 Measured (1) Aggregate Plant CAT 3406 Generator 112 / 109 (2) Measured (1) Aggregate Plant CAT 3406 Generator 113 / 113 (2) Measured (1) Aggregate Plant Screen 111 Measured Aggregate Plant Feeder i Measured Aggregate Plant Impact or Cone Crusher 10 Measured Excavator Loading Haul Truck 110 Measured (1) Front End Loader 108 Measured Front End Loader 113 Measured Haul Truck CAT D4OOE 113 Measured (I) Semi -Truck 105 Measured (1) (1) Coulson excavating equipment measured by Hankard Environmental (2) Engine exhaust I engine casing Noise Analysis Scenarios The intent of this analysis is to predict the worst -case noise levels to allow for a conservative assessment of compliance with the applicable limits. Noise levels were predicted for three Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant May 26, 2020 �1'�T AKA,RD FI NVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING operating scenarios. The first is full operation of the project, which includes the HMA plant, aggregate processing plant, and one active mining operation (i.e. excavator loading haul truck) in the current cell. This will only take place during the daytime. The second scenario is the operation of the HMA plant only, which may occur during the nighttime. The third scenario analyzed is the use of backup alarms, and while it is not independent of the other scenarios, it can be the cause of complaints and was therefore analyzed specifically. NOISE RESULTS AND ASSESSMENT OF COMPLIANCE Predicted noise levels for each scenario analyzed are described below along with an assessment of compliance with applicable noise regulations. The mitigation measures required to achieve these results are described in the next section. Scenario 1: Daytime Operation of the Full Project Full operation of the Project is proposed to occur only during the daytime and includes the operation of the HMA plant, aggregate processing plant, and active mining in one of the six cells. Noise levels were predicted with the mining operation occurring at the surface (more sound propagation at the surface than below) nearest to a residence and/or property line. Table 3 lists the predicted noise levels for this scenario, the applicable noise limits, and an assessment of compliance. Figure 3 shows the predicted noise level contours for this scenario with the HMA plant and aggregate processing facility in constant operation (but not mining, as this takes place in many locations and cannot be represented by one set of contours). Note that when equipment is at the surface and approaches the property boundary near R01, the daytime limits could be slightly exceeded, but the events are expected to remain within the allowable 10 dBA increase for up to 15 mutes in any one -hour period. Similarly, haul trucks, water trucks, semi -trucks, and light vehicles will also be active on the site, but their contribution to the predicted noise levels at the residential locations are expected to be insignificant as compared to these worst -case predictions. In conclusion, all of the predicted noise levels expected under Scenario 1 are in compliance with the provisions of CIS §25-12. Scenario 2: Nighttime Operation of the HMA Plant Only Noise levels were predicted from just the operation of the HMA plant. Table 4 lists the results of these predictions along with an assessment of compliance with nighttime limits. Figure 4 shows the noise level contours for this scenario. Note that while semi -trucks will operate on the site at slow and idle conditions, their noise level contributions are insignificant at the residential locations. In conclusion, all of the predicted noise levels associated with this scenario are in compliance with the nighttime noise limits of CRS §25-12. Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant May 26, 2020 !TANKARD "'� ', ENVIRONMENTAL Cc --ACOUSTICS AND VIBRATION CONSJITING TABLE 3 -PREDICTED NOISE LEVELS FOR ALL DAYTIME OPERATIONAL SCENARIOS Operational Condition Receiver HMA, Process, Daytime In HMA & Process and Worst Case Noise Limit Compliance? Mining 25 ft. Outside Project Boundary 51 to 66 51 to 73 80 YES R0I - Pallotto 52 56 55 YES(1) R02 - Buhlke 48 50 55 YES R03 - Cummings 45 46 55 YES R04 - Schwalm 43 45 55 YES R05 - Schwalm 41 44 55 YES R06 - Croissant 47 54 55 YES R07 - Residential Use(2) 44 50 55 YES R08 - Betz Emmanuel Trust 40 42 55 YES (1) When mining equipment operates at the property line the noise limit is predicted to be temporarily exceeded but it is expected to be well within the allowable +10 dBA for 15 minutes in any one -hour period. (2) Because this is a Residential Zone, the prediction is 25 feet inside the residential property line as opposed to at the nearest residence. TABLE 4 - PREDICTED NOISE LEVELS DURING NIGHTTIME OPERATIONAL SCENARIOS Receiver HMA Only at Night Nighttime In Noise Limit Compliance? 25 ft. Outside Project Boundary 40 to 60 R0I - Pallotto 43 R02 - Buhl ke 42 R03 - Cummings 37 R04 - Schwalm 32 R05 - Schwalm 32 R06 - Croissant 39 R07 - Residential Use(1) 38 R08 - Betz Emmanuel Trust 32 75 50 50 50 50 50 50 50 50 YES YES YES YES YES YES YES YES YES (1) Because this is a Residential Zone, the prediction is 25 feet inside the residential property line as opposed to at the nearest residence. Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 7 May 26, 2020 TIANKARD '"'� ENVIRONMENTAL Cc --ACOUSTICS AND VIBRATION CONSJITING Noise Level Contours (HMA and Processsing Daytime) 55dBA 80 dBA Residential Receptors :":i Mining Permit Boundary La_73 County Miring USR Boundary Berm Mining Plani metrics Parcels Agricultural Q Public ROW Residential r w la'1J a J'J J' l a .f.aa J' 75C 1500 't FIGURE 3 -NOISE LEVEL CONTOURS FOR OPERATION OF THE HMA PLANT AND AGGREGATE PROCESSING FACILITY Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 8 May 26, 2020 HANKARD ENVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING 7.7:0)-73=7 •rici r ran Residential Receptors :"_-i Mining Permit Boundary County Mining USR Boundary Berm Mining Pl aniirnetrics Parcels 0 Agricultural Public ROW Residential Noise Level Contours (HMA Only Nighttime) 50 dBA FIGURE 4 -NOISE LEVEL CONTOURS FOR OPERATION OF THE HMA PLANT ONLY Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 9 May 26, 2020 �1'�T AKA,RD FI NVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING Scenario 3: Backup Alarms One cause of complaints near mining facilities is due to the intermittent and tonal nature of noise from typical equipment backup alarms. To minimize complaints, many construction equipment operators have replaced these alarms with ambient -controlled broadband backup alarms. These alarms constantly measure the background noise level and produce a sound that is far less than a fixed volume tonal alarm. Furthermore, the "broadband" aspect of these alarms replaces the piercing "beep" with "white noise" that is far less noticeable at a distance (e.g., at residences) . A measurement of an ambient -controlled broadband backup alarm on one of the applicant's front end loaders resulted in a sound pressure level of 55 dBA at 240 feet away when in direct line of sight. The primary location where these backup alarms will be used is in the aggregate processing area which is more than 1,700 feet from the nearest residence which would result in the backup alarm being less than 40 dBA without any noise mitigation. The nearest residence to any mining operation where a backup alarm might be used is 260 feet when equipment is operating at the edge of Cell 5 at the surface, which results in a predicted noise level of less than 55 dBA. Furthermore, all mining and loading operations should be designed to minimize or eliminate the need for the backing up of equipment and vehicles, to the degree practicable. Considering all of this, provided that the Project uses ambient -controlled broadband backup alarms, the residential noise level limit should not be exceeded at any existing residence. N I IE MITIGATION REQUIREMENTS TO MAINTAIN COMPLIANCE Provided that all following conditions below are followed, noise from the construction and operation of the proposed project is predicted to be in compliance with CRS §25-12 limits. I, Full simultaneous operation of the HMA plant, aggregate processing plant, and mining activities should take place during daytime hours only (7:00 am to 7:00 pm).. 2. Noise emission factors should not exceed those listed in Table 2. If louder equipment is used then additional analysis or mitigation may be necessary. 3. A 20 -foot -tail stockpile should be maintained on the north side of the aggregate processing plant to block the noise from propagating to the nearest residences to the north. 4. The use of ambient -controlled broadband back-up alarms is required for all Coulson I�,xcavating equipment. Backing up by contractor vehicles not outfitted with these types of alarms should be minimized, particularly at night. 5. Good communication with all surrounding residents is recommended, including a 24 -hour telephone "hot-line." The predicted noise levels, compliance determination, and recommended mitigation measures are based on the operational information provided by Coulson Excavating. These results will change if significant changes are made to the type of equipment used, the location of its use, or the hours of operation. Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 10 May 26, 2020 "TANKARDENVIRONMENTAL Ac t.)U5il GS AND VIBRATION CONSULTING Please call if you have any questions. Sincerely, Jeff Cerj an, INCE Senior Consultant cc: Mike Hankard, Hankard Environmental, Inc Peter Wayland, Weiland, Inc Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant 11 May 26, 2020 EXHIBIT i FOSTER GRAHAM MILSTEIN & CALISHER, LLP ATTORNEYS AT LAW June 23, 2020 Via Electronic Mail to: ivanicorenaAweldgov.com Weld County Board of County Commissioners c/o: Isabella Juanicorena, Deputy Clerk to the Board 1150 O Street Greeley, CO 80631 360 South Garfield Street 6th Floor Denver, CO 80209 T 303-333-9810 F 303-333-9786 LASE -20 -- DOD? DENVER — BOULDER fostergraham.com Re: USR20-0008 - Use by Special Review — Amen Aggregate Resource — Request for Additional Development Standard to Permit Limited Importation of Raw Aggregate Material Dear Honorable Commissioners: Foster Graham Milstein, & Calisher, LLP ("FGMC") represents Coulson Excavating Co., Inc. ("Coulson") regarding its application for a use by special review permit USR20-0008 (the "Application"). On May 19, 2020, the Weld County Planning Commission unanimously voted to recommend approval of the Application. The Weld County Board of County Commissioners (the "BOCC") is scheduled to hold a public hearing on the Application on June 24, 2020. This letter serves as Coulson's formal request that the BOCC adopt an additional development standard for the Application that would permit limited importation of raw aggregate material. I. BACKGROUND The Application has always contemplated including a request for limited importation of aggregate materials from a nearby sand and gravel pit in Larimer County named "Stroh Pit" (the "Importation Request"). Specifically, the Importation Request was discussed at the pre - application meeting held on April 25, 2019. Furthermore, the original Application materials, including the cover letter and USR questionnaire also discussed the Importation Request. The Importation Request is necessary to the Application because of the current status of the Stroh Pit. Specifically, the Larimer County Board of County Commissioners approved the Stroh Pit in early 2018, but its approval of the same is currently being litigated in the Colorado Court of Appeals due to a lawsuit filed by residential neighbors in the vicinity of Stroh Pit. Coulson is planning to export the raw aggregate material from the Stroh Pit for processing offsite. Coulson anticipates that the Importation Request would include approximately 50% of the total raw aggregate material from the Stroh Pit and plans to export the remaining 50% of the Stroh Pit raw aggregate material to a different existing processing plant in Larimer County. { 00852396. DOCX /5 } 1 In July of 2019, after the pre -application meeting for the Application, the BOCC modified the Weld County Code to limit asphalt batch plant operations to the materials produced onsite, which eliminated the risk of a permanent, stand-alone asphalt batch plant in the A (Agricultural) Zone District. Such Weld County Code revision necessitates this request for a specific development standard approving the Importation Request. The Importation Request is not seeking approval for a standalone, or permanent, asphalt batch plant, but rather is requesting temporary and limited importation only from the Stroh Pit and merely in addition to the general course of operations contemplated within the Application, as described below. II. IMPORTATION REQUEST As explained above, the Importation Request is merely for limited importation operations and will only commence if Coulson receives final legal authority to commence operations of the Stroh Pit. Coulson anticipates that the total raw aggregate material importation from the Stroh Pit to the Amen Pit will be approximately 500,000-750,000 tons. The Stroh Pit importation would occur periodically during periods when the hot mix asphalt batch plant on the Property is not in production. Specifically, when Coulson's trucks are hauling raw aggregate material from the Stroh Pit to the Amen Pit site, that will be the only truck traffic on that day; Coulson will not both import raw aggregate from Stroh Pit and export processed aggregate or hot mix asphalt on the same day. Coulson may, however, conduct onsite mining, reclamation and aggregate processing concurrent with the importation of raw aggregate material from Stroh Pit. Accordingly, the Importation Request does not create additional impacts to the surrounding area, including but not limited to, noise or traffic. To prove that the Importation Request will not create additional impact to the surrounding area, Coulson had an updated Traffic Impact Study and an updated Noise Analysis prepared. According to the Noise Analysis for the Proposed Amen Aggregate and Asphalt Plant produced by Hankard Environmental dated May 26, 2020, the noise from the Importation Request would not change the previous conclusions that the Application complies with all necessary noise standards. Additionally, the updated Traffic Impact Analysis prepared by LSC Transportation Consultants, Inc., which will be finalized after the BOCC's hearing on June 24, 2020, will show that the Importation Request will not change the overall trip generation or traffic impact on the Application and that the impact of the Application can be accommodated through implementing a few design and route recommendations. III, CONCLUSION For the foregoing reasons, Coulson respectfully requests that the BOCC approve a development standard for the Application that permits the Importation Request. Coulson proposes the following language for such development standard: 00s52396.DOcx / 5 } 2 "Notwithstanding anything in the Weld County Code to the contrary, importation of raw aggregate material from the Stroh Pit and processing of the same is permitted." Thank you for your attention to this matter. Sincerely, FOSTER, GRAHAM, MILSTEIN & CALISHER LLP David Wm. Foster cc: Kim Ogle: kogle L {00852396.DOCX / 5 ) 3 From: Melissa King <mking@weldgov.com> Sent: Monday, June 22, 2020 1:09 PM To: Peter Wayland <pwayland@weilandinc.com> Cc: Kim Ogle <kogle@weldgov.com> Subject: RE: Amen Aggregate Resource Peter — Thanks so very much. Please incorporate this and submit an acceptable Final Traffic Impact Analysis from Chris. Melissa From: Peter Wayland <pwayland@weilandinc.com> Sent: Friday, June 19, 2020 3:46 PM To: Melissa King <mking@weldgov.com> Cc: 'Chris McGranahan' <csmcgranahan@lsctrans.com>; 'kenrosepg@comcast.net' <kenrosepg@comcast.net> Subject: Amen Aggregate Resource I elution: This email originated from outside of Weld County Government. Do not click links or open attachments unless you recognize the sender and know the content is safe. Melissa, I wanted to let you know what changes we are incorporating into the permit with regards to Traffic. 1. The project will not use any access points on CR 54 to mine Cell 1. Instead an assess permit will be submitted for CR 15 approximately 600ft north of the CR 54 CR 15 intersection. This access will run west just north of Croissants Feedlot and cross the Hill & Brush Ditch. A ditch crossing agreement will be secured with the Hill & Brush Ditch prior to construction. Site generated traffic for this access point will be: 1-2 operators per day, 1 time mobilization of Heavy equipment onto the site 1 time mobilization of heavy equipment off of the site and 3-4 construction employees for approximately 1 week to build the conveyor. 2. An access permit will be submitted for the existing access just south of the Hill & Brush Ditch on CR-13. Site generated traffic for this access point will be: 1-2 operators per day, 1 time mobilization of heavy equipment onto the site, 1 time mobilization of heavy equipment off of the site and 3-4 construction employees for approximately 1 week to build the conveyor. 3. Based on structural deficiencies identified by Ken Rose P.E., the bridge of over the Big Thompson River on CR 54 will not be used to haul aggregate or HMA until it is reconstructed. 4. The Traffic Study by LSC Transportation Consultants will be updated to include mention of the additional access points as well updating traffic analyses resulting from preclusion of eastbound turns onto CR 54 until such time as the bridge over the Big Thompson River has been reconstructed. Please let me know if you require any further clarifications I will be mailing you an updated extraction plan on Monday Thanks Peter Wayland Weiland, Inc 303 51.8 2182 m EXHIBIT MEMORANDUM TO: Kim Ogle, Planning Services FROM: Melissa J King, PE, Public Works DATE: June 19, 2020 SUBJECT: USR20-0007 EWS #12 DJ Basin, LLC Requested Revision to BOCC Resolution .O a usZ2i 2O- $ The Weld County Department of Public Works requests that the following Development Standard be deleted from the referenced Resolution: #13. The construction access may be utilizing unmaintained County right-of-way (County Road 39). Maintenance of the unmaintained County right-of-way will not be the responsibility of Weld County. MEMORANDUM TO Kim Ogle, Planning Services FROM Melissa J King, PE, Public Works DATE June 18, 2020 SUBJECT USR20-0008 Croissant Requested Revisions to BOCC Resolution The Weld County Department of Public Works has completed additional research with regard to the parcel's (095719300061) western boundary and associated right-of-way for County Road 13 north of County Road 54 Based on this research, it is requested that the requirements for access easement onto County Road 13 be deleted Specifically, the following shall be deleted Page 5 1 E "The applicant shall submit a recorded copy of any agreement signed by all of the owners of the property crossed by the access onto County Road 13 The access shall be for ingress, egress, utilities, and shall be referenced on the USR map by the Weld County Clerk and Recorder's Reception number (Department of Public Works)" Page 7 1 N 15 "Show and label a 30 -foot minimum access and utility easement to provide legal access from County Road 13 to the parcel (095719300061) on the site plan (Department of Public Works)" The Weld County Department of Public Works has completed discussions with the applicant's engineering representative concerning construction and operation access for the portion of the eastern parcel (095719400002) that is unable to utilize the permitted access onto County Road 13 because of the location of the Big Thompson River It is agreed that construction and operation access point for this portion of parcel 095719400002 will be at the existing unpermitted access onto County Road 15 that is approximately 580 feet north of the intersection of County Road 15 and County Road 54 Therefore, it is requested that the following revised conditions be substituted for the existing conditions Page 5 1 A "The applicant shall address the concerns of the Public Works Referral relating to the proposed County Road 13 and County Road 15 access locations (Department of Public Works)" Page 7 1 N 12 "Show and label the approved access locations onto County Road 13 and onto County Road 15, approved access width, and the appropriate turning radii on the site plan The applicant must obtain an access permit in the approved location onto County Road 15 prior to construction (Department of Public Works) AMEN AGGREGATE RESOURCE Weld County, Colorado -IR U C771 DiN j\iJi narrie IS Peter JVaiyJaricJ1 r amr] giffi79 f)flflCJ .P Jr \j\JJJ,,m cJ irlakt:=14,1.� vvrJr1ttrx�yaFJ sc9.11,91.J tacit, cur GuuJur� SkeCiettgiZifiC if tie pPr.mflJ!:,yjjJ�t����1rJ�a gr3t, grwer,.7.%); ret 05iffai Lar Jer \II4d Cr Idifiliech ppte&r_fiti.:5; D vviii ri HP �c:Fe:arr pliarke./ • ,/J_KNN 14T3r,R6 U TWUit Imps cr:r.;\ r: :tl n -fl en Fn$n1-I?IS rA,cLj. c:cn-c1u-D ; hti.Fl..ir• k-Arr,-LU: rctiliE7F_ ire. PG ECC<; 29? Lr, El.LLi. to E053 R�xie> ua; 9Fir,TERF S4 D AND GRATA PIT 05-21598 • 1,: PFPfcL#:PLI-LrE 'STEVEN ...EE I-St.o2 CR. 11 L7,ELtiD =D, W5:17 U17: IHU I G Jam iv I P) Ell,. Intl 7.IIESIY, CO 5D5K .1514 POH' L4, 0)2?;xwD11= raLL9rt-D M4 nL. vac & wMYORa c fFn9L a2r0I3 Cr I2 11]IFI.4'r1 •Y1. Atli." .49 :if D YELL .,,. I-111 Fr -11.J +T^i {• ?1S?I'iU' rLL' r71L CCU.IG 11;-1 _r girlairgra.LOP CtrAi a :o t... u P 3iC.F ¢ tel.7-01931^tied 9e0 'E rx, 1rlUy F=,F:C- . L0N.O. C, ifith—'Ic CDbCR=1E. I'.C P: BJX 21S LIT.GL5\L'1-L2 WJiY REVISIONS ocsr.Ir rra COM rrnmr- L_i,•LJ'uo hew VIE i'j: PCP par !.2sa 1.10.11_/410. CD. •7+533 , r Welland. Inc Environmental E Engineering PO 6rlX 13087 .717: G r rr rn .4airrt f.11 :ir1A-C.i? aSPI i CD- LSCN / C7^ICSatiT PR:PER-1r LID_ IIUAI?" r • e I I a C41 rh.CE1r: ?I 11A'A-1' ARCLLI :8511E,C4tP 'CHIA L E:.11-7Ft..r 1.-11 rim C.n.nit rr.rn 11 JJH''D CACTI. 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R EM HU R914 FM RN EV FIN Rgo, MN Rau RN R0N! KV REV `" I R:W 'ROW RN P .— �� F' I 1 i a I 1 r�� r — EI-CND iEADY MIX ] ' ¶ KF MIUJ-WA T -'RS PIT AG"F95 1 1 t itTRUCE NGVrlrNTi UT IN RIG IT rstIT MI'r ��Il I - t I — - 1 it I r I t = _ - - Pt.WQb_u WOE o- P.;'�Etit_'k- S' C_t 15 QNL]EP.j 1f — t . i it S. t _—_ --__ ----- ����------ � .----t-� --� - -- ^�- - — -•� _ -- --- - - 41.21 STA: r+n.-, r.7 — O+O= _SIA:III -` '.V.' ShkR CFF0l4r-- t-CFkO0O' 3r4 1+ 07.02 / 5-d •+DC _ a-0: 3 -CC 4 -CC 5 -CC ""a- .` .C - I h I — — �� x x �� �-� x r'r - -- _- — ` rr� �� _..'•` x ___ * 4, MD TA5EP_ 8E'CP= P__SICfT1TIML A"CE35— — t P.5CO.^F7 '� _ �ei r_,-� .84:170 FI1C7F /I' II _ l�,! �0. el t f'^ _ _ -- __• r' I! me I.I I;L CI- P LNtVT / Rf p.LJ7^r ! f R58-"_Fi ems Aga - -- _ �- r1 _ - '- t_s +, kt fy.1- J -- __ �� - _ l - ti' r /C./ �- . ''•".+-2------ _--�• x J-._ r '� 1 I jjjj1 I ti 1I I firs--.`• y - __ f - - - - 1k r p J — l 4 �.. '- Xts� �•Y I All I r+ I II \h -"" a. • ((( I S 7 ,%., .'L t r,f"'1 C K L R L G 1: tl [ [ R Ii I R [ I.'�_. x a% -.A, [ P r{L 1 1 a l :� c 1 i s a 1�� I K I y •N9ilL- -„� • _? 1' -c 1 I i, �' 4Gk k9t hAt - 'E ti9k hAtl MOt Volk ti0k sat MOe WE silk N.901 MOh Mt !,{T M41 AM Rah / / �f { 111 f! I t r el __ - 'VA �`- 'I1 4 k2w._uf i� y jr +r r I 5 I ( _-__•F r Air I I _ r I I 1 I I I T 1 u .' I 4840 4840 487i0 48750 '1F121ci 1F7c) -C .M" IA! C 1 --j-• . —11 ^� —1 WY Ik�1 i f1 r44' A2xs L31 .=2x }Uri 4800 -4530 4/ rr�',1 0+25 5 L' I G'�COG+��J REV1SIONS 5 C J—�,a 1-2.5 r 1-75 r. , I —tea -+C� ,• ry1 2+25 'l 5 2 I _+��J l.7 _ r5 7T5 V J+C�� 3+25 J+C�� J+.� • +C�� Z"FE� :1+5D r—F/� 5+Cd 5+25 J+50 Icameicami- AMEN AGGREGATE RESOURCE WCR 13 ACCESS 1 Environs Welland!_lnc.. -manta! E angin iering USE BY SPECIAL REVIEW SHEET 51 War WELD COUNTY, CO 1`-1 u VIM „b ACI LSS.UWS ttL`! P7 Mr M eouda6►. CCJ sore ail "e r PlIZIWIC.2 I" Cr% COULSON EXCAVATING CO, INC W, C1W o-ca¢ao^ PFW LL6T1JRI2f1?fl 91 CET 0F3 k 2 L i al♦ Petal ;,FAf5V MI}' I I I—Wisi TFES FIT At:^=.f i •-- IM RIA—T 11.T CAI'/ I • lodge •Vh rur 30\ ROM • _ —b04 K L • I _ r L. R:W ti� C [ 1 F Cl4 PW Y ti R104 FOP PAW =4W l — ST?_'+12.21 St': €—O.3 6-I - Cr; Ck DC ..E+onIf 51N6-55 12 4. Boor CE�ELERATlaI LDIG1- - —i1-sir_ '7+CO S. I •• 1 ?aa.F- erOCI • aRr.Fer,=n F.ff1RPF "-rfF;R l`; I lo, 11 i i tit ICE 111 :d 1 I•a- toad nit f 'You 0 WEI PIOS Yon mn acts AZEI rod rai NOE UP: ?tall tb l 57 43- J C D -- - — t 0 5 "rE+=36• - U ' c_Es i.60 L AE OF SIC-li TO THE IICRT1- ` o- -• -- • ., —.. �':i —2-'17.1: —&I2,. I.:ZTh -IL .0..`4 -I114.. -In14s —1 it —n via —' - _ + 4 O Q % i .5l 1 1. J+l.. I�. rn I nrll C—iJ Fi I sr: if Jtr.! 7 nn f I�f E+r_.? T 1 .1f1 ; /' )f J R 1O1 '.3+_.! P 9111 LS+.1,.) '1 i Oil 17. 9-2J n 1 F.) !f 9+..1 it rn I•! ' U+2.i 17 I .sr: f, le— ( J 11 rn I•- 11+G.a • • I .Tin �1 11 - ? J 17 I 134'J B G BCC ISO REVISIONS DEACPSITGII Dan lerPSIV= istrSg's i Weiland. Inc.. Environmental & Engineering PO vex root'= DOLfts t . Cc COMM ado 424d19-9.SP1 AMEN AGGREGATE RESOURCE USE BY SPECIAL REVIEW WELD COUNTY, CO WCR 13 ACCESS SHEET -2 - I" 201 AZCESS-D1Ary ..r� REV YtYNfi - Y. C0ULSON EXCAVATING CO, INC CTJV • +a -1 -0 'FW 1/8/2020 NOI-I 2OF3 Department cf Heald] J\JriiE;e A nuisie Study c.onthaictFd _ - PIPACDFiffie7ifraL fiDISHE1 \\ ,// . 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Et d INL_ WL OLIAtN MLA k -1 oraa [scat! 3.03 '214.10 :,U' 1251.21 3.4k 131'J HUM; 2 Eta IN IallcJN'J=1:1 SIJIL :ANJll filth ::,Ud Tb:IIL'JU POND 'i !fr d IL I=11C'AI'J_L I SCIL IN1'II l.1 -L^ KALI 2 it d SJU ILL' - PI' i1 -LA FO"D 2 & OUTLET SOIL CEIL04T .ARE? PO'D 3 PI5ELIN= EMS^NICh1E111T SL:PE P4'P + INLET =193A' A=Ek PO'D 4 IFJLEF SdL CE4E`IT AREA PO\D 4 OIJ'1L_'- P. PP.CP 2r,E,1 POD 4 OIS1U— SOIL CEMENT A'=EAT . _ P[1hn PPF1 4 PII_ FMRbNh. MNT SI . n .PF PO\D n INI FT a PRA' PAPA PO'D INLET !OIL CEIrEIT AREA FSThn 5 FLin -- rPRCP ?Rr� 1anhI) I: o1J II S?1II CI MINI Ace. A Ill ::.0'i 1US9_'28 Z.92 Z.A6 C: O T.08 4 2729-28 2'I9.59 d2.18 3.83 323 111 1.4 2I23.'C :184 ?7RIL.5A8 1'i14.18 3.04 1733.18 .. n, 1•l lrr.73 7.0' I4111._6 J9fti 4'J AJ13As SLi'JIldl1AY Awn it au' I [ea •] An-•, _r4 II] JUJU 1 •::_9y 1/ s-y.9li - LNU 2 :. r1JV JUJ"JUM I J 2 aCI-1D 5 4.02 1.'4955.56 3CND 'I 'CND 5 2E.5; - 2.99 I1663.13.2C c2za5'C.4+ :au rat Mintnnmintal & £ngtneer!ng r. AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS APPLICATION VyELD COUNTY, CO -1.1- 991-11 K�1' COUL0ON EXCAVATING CO.. INC. LECEND LlilliLL E]rE Dr aer. ALT f OAD l FJ♦Ca -A 0A0 A%0.:lRICO OAF' I IYF EI,LL C'+E oeo ers ‘‘J. CPI . . a ,mss 5mile.:LmuI)} Dk: LIZ DLP CIh3 UhE IFELY ¢RL1gliLV W I MOM: P+'RCEL FiCU5P+Rv L JRRPJNDNa1 Nar'A I mum 6F.RY Frcnnu I INF Er'1£NDJT ie 4ii LF WA-& (MAL; eaffizajt I Nf19 OF YILxO FINa c;s'-11! e21 -:u3 6 FT Lar-RCJv'1q nu,t 6x4c: c31 -CUR - 1 IT (ArrFG-0HAT=1 F;:IL CENEfJT na.4 RALL1AI nA .ViU ICI'ECIL .4iL4 F+CHJ At; GROUNDWATER CUSER'9W-EN WEJ- P.3VCE 1T:iFlab Strad 51.filtAL41:Y CEL_ I R=AMTA1iOP. ".RE". C_L_ 2 4E4fl. ATION A?EA t_L_ ?-'-EVnCE-.3.'ZI1 AP a CEL_ = 4ELT]DETATION MEd 6,. - 13.3 6.66 5A' 9.93 A -.i li ri 5X317.'1 x8920:.5.1 679827.81 L33a37. r l� titi�1 4 A.Ire _• .1\%- \:\ •. ♦ 7 I- I , Ih \ • , y ' S.' `,._ - , ,•1. l., �LI y1 2 \ \ N, \ -'/ 5-. \ 1 l \ t\L \�' 4-I 4, 'r. "\ •._` v r1 EXHIBIT F RECLAMATION PLAN SHEET .1 5iJi^ ^=1 so' [XI EMT f. DWG C:TX PIv IJIeF- Ian &,'2a1S , a WM Pin REV 1C'=11 L K '. ti -� 1 l Z ., +'.1 •ti _
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