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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 -
Clerk to the Board
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20072657
Page 1 of 1 Esther Gesick From: LaVonne Mrazik [lavonne@affordablervstorage.com] Sent: Monday, July 23, 2007 11:43 AM To: Esther Gesick Subject: RV STORAGE To whom it may concern; My name is LaVonne Mrazik I live at 1492 weld county rd 11 approx 1/4 mile from the purposed RV storage lot. I have 30 acre parcel with a special review permit to store 200 recreational vehicles.l have lived on this property for 15 years and have developed as to the terms of the special review permit. I don't think the area is developed enough to support another storage lot. there is already a new one coming in on weld county road 8& 11. Now you are approving another lot in the same block. We are family owned and use this business to pay our land payment.l have three children in high school and I don't want to loose our business to someone who has all the amenities we are not allowed. Are they to abide to a special review permit to only have 200 hundred units???? It is so unfair to approve a new place with all the amenities to take this business from us. You granting this permit is devastating to us and our business. How do we have a say. Or we don't. Sent this email on July 17th and it was not heard what happen? LaVonne Mrazik LaVonne@AffordableRVstorage.com 3303-833-2979 use l(°17 �iy/1mww�cr Pt. l 7/24/2007 2007-2657 Page 1 of 1 • • Michelle Martin From: David Bauer Sent: Tuesday, January 08, 2008 2:30 PM To: Michelle Martin Cc: deymann@comcast.net; Don Dunker; Amy Burry Subject: RE: Public Works Committment Letter for USR-1607 Michelle, I have received a commitment letter from Don Eymann, RV Storage Solutions, USR-1607 enumerating their commitment to construct and complete the last (drainage) items needed for Public Works' approval to release their plat for recording. They have complied with our requests. Please record their plat. Thank you, David Bauer Weld County Public Works From: deymann@comcast.net [mailto:deymann@comcast.net] Sent: Tuesday, January 08, 2008 2:16 PM To: David Bauer Cc: Michelle Martin; David Lee Subject: Public Works Letter for USR-1607 David, The attached letter was faxed to you office at 2:15 today. Please let me know if you need anything else. If all requirments have been met can you please notifiy Michelle Martin this afternoon so that we can continue working tomorrow. Thanks, Don Eymann deymann@comcast.net 303-727-0243 cG�Z� C oOD9- a�57 5/a070 01/09/2008 • • USR-1607 R crnii i Recreational Storage Solutions January 8, 2008 5o;�• 5360 County Road 6 Qvd -. Erie, CO 80516 Dear Mr. Bauer, As submitted to you via email on January 3, 2008 Recreational Storage Solutions, LLC, and applicant of USR-1607 Donald Eymann, agrees to do the following: 1. Complete drainage improvements on the north side of CR6 2. Repair the culvert on the south side of CR6 3. Apply for all requirement Right-of-Way permits Thank you, Donald J. Eymann Owner Recreational Storage Solutions Applicant USR-1607 Page 1 of • • Michelle Martin From: David Bauer Sent: Friday, December 28, 2007 10:57 AM To: Don Eymann Cc: Don Dunker; Donald Carroll; Michelle Martin Subject: RE: USR-1607 ROW Property Owner Letter, drainage plans Don, Thank you for the letter from Mr. Johnston. Are you still planning on boring WCR 6 for the detention pond outlet pipe or has an alternative approach been determined? Thank you, David Bauer Weld County Public Works From: Don Eymann [mailto:deymann@comcast.net] Sent: Thursday, December 27, 2007 7:20 PM To: David Bauer Cc: Michelle Martin; 'David P. Lee' Subject: USR-1607 ROW Property Owner Letter Mr. Bauer, Per our agreement to release the hold on recording plat we have attached a letter from the property owner authorizing us to enter his property and grade the ditch in the ROW of CR6. We have also been working with Amy Burry to obtain the four ROW permits needed to complete our improvements. We will repair the culvert near our main entrance to bring it within county specs. Additionally, we will complete all drainage improvements related to the project as quickly as the weather allows. We will make every attempt possible to have the drainage improvements completed by late February/early March. Thanks, Don Eymann Recreational Storage Solutions, LLC (303) 727-0243 deymann@comcast.net www.RSScolorado.com 01/02/2008 • . December 27,2007 Weld County Public Works I authorize Recreational Storage Solutions OAR-1607)to enter my property for the purpose of grading the ditch on the north side ofCR6. I understand ditch improvements in the County Right-of-Way may need to be blended into my property possibly changing the existing slope, licitly Johnston gehvvj • Property Owner Parcel#146724300003 • 1./SR-1607 Meeting AGENDA December 21, 2007 G 11:30 a. m. 918 1011 Street, Greeley CO 80631 I. Introductions II. Meeting Rules III. Easements from all impacted landowners on the north side of WCR 6 for construction and maintenance of drainage improvements associated with the project IV. The existing 18" CMP near their west entrance by 1 section, move the riprap and debris rack away from the edge of WCR 6 pavement, and restore the side slope of WCR 6 to a safe slope of 4H:1V. S tc(I w.// mu.t ,`n "ss„ a c1-0 d,bccnl.. V. The applicant shall obtain all necessary ROW permits from Public Works for all construction activities under and in the WCR 6 ROW. VI. Timeline for recording the plat VII. Current Operations VIII. Questions DEC-20-2007 THU 08:56 AM WELD COUNTY PUBLIC WORKS FAX NO. 970 304 497 P. 01 f • . FAX TRANSMI S sioN • llllç Weld County Public Wads Deportment C OR.A Pax: 970-304-6497 • Phone:970-3564000,ext.3750 • Moline Add ms: P.O.BM 758,Greeley,CO 8Dt• lNA4 N Physical Address: 1111 H.Saner,Greeley,CO 80 S E 1: Tot �e / � Date: /2. /,IV 7 Paz: Pages,• ((( Phone: • Prom: —ROAE 1410t4 • Subject .. �� S;fie corr+eve in cam' COMMENTS: • • • • LONEEDMiliar • • • This ffiesiaule h intmdednnhlorthe nu:of the imitvirijtnl or Fitter veldt it is G&W a:i GGt end may comb jig tut in nrivfeeed.eanfideetal._mtd exempt from disclosure oggagsgagghlatE. 7±t:C reader of this bcsimile is ant the intended ieeipie tnor tbv-mployee or agent taeponsible for delivering the facthn 11 u to the Sanded recipient,you are heteby notified thst any dissemination,distrilinti®,to copying of this =mimics t 6 ma is strictly prnhiba d, If you have received this ccumumicatino k error,p]ease notify vs immediately by telephon i i ad re n the original message to us E the above address viatbe U.B.Postal Service. Thy you DEC-20-2007 THU 08:56 AM WELD CiTY PUBLIC WORKS FAX MO. 970 304.97 P. 02 i. USR-1607 IIRecreational Storage Solutions October 1,2007 5360 County Road 6 Erie,CO 80516 Dear Ms.Martin, Donald Eymann and David Lec,applicants for USR 1607 reque I early release of a grading permit. We understand that early grading activities are II editional on the following items: 1. All early grading shall be performed at our own risk. 2. Any and all final design changes discovered during the I..;a.process shall require on-the-ground modifications to the site. 3. The on-site detention pond must be excavated immediate I°J(prior to overlet grading)for water quality protection purposes. 4. We agree to meet all applicable County Codes during the iliR application process. Included with this letter are three(3)copies of the grading plat a:c three(3)copies of the SWMP plan for review by Planning,Building Inspections,and I*laic Works. Please - start the early release approval process with the attached informs t i m. Thank ,,��yyou, /Donald J.Eanann DEC-20-2007 THU 08:56 Ar-ThM WELD CQI_JNTY PUBLIC WORKS FAX NO. 970 304 497 P. 03 4 t kr MEMORANDUM,t, copr TO: Michelle Martin Planning Services DATE: 10-October-2007 CC: Donald Carroll,Public Works Departs Clt I l I D O FROM: ar ella P.E.,Public Wo 1:t Department COLORADO SUBJECT: Early grading permit request f y.'UJSE-1607,Recreational Storage Solutions,at WCR 6 «7eld County Public Works Department has reviewed this early site gradi 1 i permit request for this Use by Special V V Review. Comments made during this phase of the review process ar: •tot all-inclusive, as other concerns or issues will arise during the remaining USR process. ...............__...__...__...._.....___Early Grading Requirements i ._..,M..._......__.._...._.__..-.__._.__. . _.___. ❑ These drainage plan comments apply to the Stormwater Management Plat)i:rr Recreational Storage Solutions prepared by Tetra Tech Inc.,dated October 1,2007. The SWMP is suppc ru,d by a Site Grading Plan, Sheet 1 of 1,and a letter of intent from the Applicant,Don Eymann,both dated Oct Nu r 1,2007. Neither the SWMP or Grading Plan have been stamped,sealed,or signed by a professional engi u:ar licensed to practice in the State of Colorado. All documents were received by Public Works on October 8, 0(i7. ❑ The SWMP includes a copy of the Colorado Department of Public Health rc rd Environment(CDPHE)permit for the construction site. This document is blank, and will need to be comply;I.y I.before Final Plat of USR-1607. a The site is located south of WCR 6 between WCR 11 and 13. Requirements: ❑ All activities(grading,utility installation,excavation,demolition,and oth:-t)shall comply with the surface water quality regulations and requirements of the Clean Water Act(CWA)enfo u>xi by the CDPHE,Water Quality Control Division. u The construction area is less than 1 mile from Little Dry Creek,and vigil:cc C.in stormwater management is the responsibility of the applicant. o Any disturbed earth at the construction site must be graded according tot t;:approved plans or to pre-existing project conditions,and re-vegetated with an approved Weld County seed 1 1:. a The letter from the Applicant,dated October 1,2007,agrees to the follov,L:t i terms and conditions of this early grading permit: 1. All early grading shall be performed at[the Applicant's]own risk. 2. Any and all final design changes discovered during the USR proces➢l shall require on-the-ground modifications to the site. 3. The on-site detention pond must be excavated immediately,prior tc .r verlot grading, for water quality purposes. 4. [The Applicant]agree[s]to meet all applicable County Codes durin i he[remaining] USR application process. Recommendation pp requested grading permit from Weld County for construct i�)n,activities..o_._th.__...-.-o.._......_...site a_..-... The applicant has ro rusted a di ,activities on their proposed at WCR 6 between WCR 11 and 13. The documentation submitted to Public W r r ra and dated October 1,2007 is acceptable for an early grading permit ONLY for the Recreational Storage So 1I ions site(USR-1607). Weld County Public Works does not recommend releasing the applicant for any other work n:u the site until the Use by Special Review process is complete and approved by all referral agencies. .Page I of I October I0,2007 I*PLAMdaiG-DEVELOPMENT REVIEINUER-LW b Special RavYMI16R-I607 KY N cop sJSR-IE%Early Gnat Pm:d[MWI. ni: Page 1 of 2 • Michelle Martin From: deymann@comcast.net Sent: Wednesday, December 19, 2007 3:36 PM To: Michelle Martin Cc: Lauren Light; David Lee Subject: Re: FW: *REVISED* USR-1607, Rec. Storage Solutions -- requirements prior to recording Final Plat Michelle, I revisited the conditions of approval from the County Commission Resolution on July 18, 2007 and the and could not find the three items below listed. We have met all the conditions of approval from that meeting, submitted our mylar, and paid our fees. Our obligations were met last week when we submitted the mylar. If you cannot record the plat per the original agreement then we need to elevate this issue. Please advise if you wish to elevate the issue. Don Eymann Original message From: "Michelle Martin" <mmartin@co.weld.co.us> Don, Before the plat for USR-1607 can be recorded the following still need to be addressed. Please let me know if you have any questions. St ..ern Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720)652-4211 From: Brian Varrella Sent: Wednesday, December 19, 2007 9:47 AM To: Michelle Martin Cc: David Bauer; Don Dunker; Donald Carroll Subject: *REVISED* USR-1607, Rec. Storage Solutions -- requirements prior to recording Final Plat Michelle, Please disregard the previous e-mail. Prior to recording the USR plat for Recreational Storage Solutions (USR-1607), the following conditions must be satisfied: 1. The applicant shall obtain easements from all impacted landowners on the north side of WCR 6 for construction and maintenance of drainage improvements associated with their project. 12/19/2007 dPage 2 of 2 2. The applicant shall extend the existing 18" CMP near their west entrance by 1 section, move the riprap and debris rack away from the edge of WCR 6 pavement, and restore the side slope of WCR 6 to a safe slope of 4H:1 V. 3. The applicant shall obtain all necessary ROW permits from Public Works (Amy Burry) for all construction activities under and in the WCR 6 ROW. This includes, but is not limited to, new culvert placement, existing culvert repair/modification (item 2), existing roadside ditch maintenance, proposed ditch construction (item 1), riprap placement (item 2), new drainage pipe boring under WCR 6, and others. All of these items have been discussed with the applicant during phone conversations on December 13, 2007, and are documented in the Public Works review memorandum dated November 19, 2007. When the above 3 conditions have been satisfied, Public Works will provide final sign-off for the recording of the final plat. As stated previously, the applicant is reminded that it is Public Works policy that all pipes under paved county roads are to be bored, not open cut. Please call with any questions. Brian Brian K. Varrella, P.E., CFM Weld County Public Works 1111 H Street Greeley, CO 80631 phone: 970-304-6496 fax: 970-304-6497 bvarrella@co.vveld.co.us ******************************** 12/19/2007 Michelle Martin From: Donald Carroll Sent: Friday, December 14, 2007 7:26 AM To: Michelle Martin Cc: deymann@ball.com Subject: USR-1607 Johnston recording plat Michelle, I can sign off on the transportation portion and Phase 1 collateral for on site. The Drainage portion shall be Brian V. or David B. Amy Burry is our Right-of-Way permit person, for every work done with in County R/W. David B will be down at Southwest Weld office today to talk with you about this. 1 • • Recording Requested By, and When Recorded, Please Return To: SCHAFER I THOMAS, P.C. 4 Garden Center, Suite 200 Broomfield, CO 80020 SPECIAL LIMITED DURABLE POWER OF ATTORNEY FOR REAL ESTATE I, Donald J. Eymann, of the County of Broomfield, State of Colorado, intend by this instrument to create a special limited durable power of attorney. DURATION: This durable power of attorney shall become effective upon my signing it and shall not be affected by my subsequent disability or incapacity, and shall remain effective until December 19. 2007. APPOINTMENTS: I hereby appoint David P. Lee to act as my attorney in fact, who is empowered to act for me and in my name and for my use and benefit, in such limited capacities as described herein. LIMITATIONS: I grant to my attorney in fact full power and authority to exercise any or all of the following powers, including but not limited to all matters necessary to record USR- 1607; to contract for, purchase, receive and take possession thereof and of evidence of title thereto; and to mortgage, transfer in trust, or otherwise encumber, borrow against, or hypothecate the same to secure payment of a negotiable or non- negotiable note or performance of any obligation or agreement; and to . cause the principal to be represented in any and all such proceedings. My attorney in fact 's signature or act under this authority may be accepted by any third person or organization as fully authorized by me and with the same force and effect as if I were personally present, competent and acting on my own behalf, within the limited scope defined herein. No person or organization who relies on this special limited durable power of attorney or any representation my attorney in fact makes regarding his authority (including, but not limited to, the fact that this durable power of attorney has not been revoked; that I was competent to execute this power of attorney, or the authority of my attorney under this document) shall incur any liability to me, my estate, heirs, or successors or assigns because of such reliance on this special limited durable power of attorney or on any such representation by my attorney in fact. 1 Date: /Z1/a/O-7 - G /a >-. nald J. Eyma STATE OF COLORADO )ss. COUNTY OF BROOMFIELD Subscribed, sworn, and acknowledged before me on C tiAb .r (2 , ) 0D- - by Donald J. Eymann. Witness my hand and official seal. LAURA C.GL00EK Notary Public 6...)...X0-0-`6, NOTARY PUBLIC STATE OF COLORADO y Il.[^ ^ My Cumn,k Icn E.plia.o.mmm o Comm. Expires: r1 T,1 2 J)` Q(J 2 DEC-10-2007 MON 11:35 AM WELD COUNTY PUBLIC WORKS FAX NO. 970 304 497 P. 02 � MEMORANDUM fat If 4 TO: Michelle Martin,Planning Services DATE: 10-December-2007 Wilif FROM: Richard A.Hastings, Compliance S J:c talist,Weld County Public Works SUBJECT: (USR-1607)-Recreational StoraE: iolutions COLORADO Weld County Public Works Department has performed a site survey, Ell the above mentioned site, and has found the following: • Street base in place and compacted •Street paving taking place in rear open parking spaces area and near compl it on •No fire hydrants in place •Detention pond in place,but no inlet or outlet structures noted •Two CMP culverts in place,one across WCR 6 and one near the fire acces;;;ate.The culvert near the fire access gate has one end partially crushed by truck traffic.Photos below. 1,-, .wry eil r, , ni 'F ff 1kz t Ar d T y :` pc: Don Carroll,Weld County Public Works USR-]607 M:1Rich HastingslREIUSR-1607 collateral release request mcmc.doerage 1 el 1 la-December-20O7 Page 1 of 2 Michelle Martin From: Michelle Martin Sent: Tuesday, December 04, 2007 8:00 AM To: 'deymann@comcast.net' Subject: RE: USR-1607 Questions HI Don, Yes, I did get your email. The second draft of the plat I reviewed on 11/1/07 had some corrections that needed to address. The letter of credit needs to be addressed to the Board of County Commissioner Att: Clerk to the Board 918 10 Street Greeley, CO 80631 I visited the site yesterday and approved the costs outlined in the improvements agreement in regards to the landscaping and the fencing. I have not heard from Don C. on the other improvements. Let me know if you have any other questions. Lde Sh Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720)652-4211 From: deymann@comcast.net [mailto:deymann@comcast.net] Sent: Tuesday, December 04, 2007 5:24 AM To: Michelle Martin Cc: dp.lee@comcast.net Subject: USR-1607 Questions Michelle, First question - did you get this email? Second question - have all the red lines on the plat been corrected to your satisfaction? Third question - What is the county name and address I should put on the bank form for the letter of credit(the beneficiary). Fourth question - do you know when Don Carroll will approve the improvements agreement? Thanks, Don 12/04/2007 • • MEMORANDUM f &rlel TO: Donald Carroll, Public Works Dept. DATE: 19-November-2007 NiueFROM: Brian K. Varrella, P.E., CFM, Public Works Dept. SUBJECT: Drainage report review#1 for USR-1607, Recreational Storage COLORADO Solutions at WCR 6 Weld County Public Works Department has reviewed this Use by Special Review drainage report. Comments made during this phase of the review process are not all-inclusive, as other concerns or issues may arise during the remaining USR process. Drainage Requirements ❑ A Final Drainage Report for Recreational Storage Solutions, herein referred to as the Final Drainage Report, was received by the Department of Public Works on October 30, 2007. The Final Drainage Report was prepared under the supervision of Cameron L. Fowlkes,P.E. #39318, of Tetra Tech Inc., and is dated October 2007. ❑ The Final Drainage Report is signed, stamped, and dated by a registered professional engineer licensed to practice in the State of Colorado. The D-size maps included in the map pocket of the Final Drainage Report are not stamped, signed, or dated, and marked Preliminary, Not for Construction on all sheets. All reports, attachments, and associated construction drawings must be signed, stamped, and dated by a registered P.E. in their final form before the USR Plat can be recorded. Requirements: 1. Please review all redlines in the Final Drainage Report and attachments included in the map pocket and revise accordingly. 2. Please provide a complete construction drawing set at the next submittal. 3. Please prepare an offsite improvements agreement for all proposed offsite drainage facilities. A Right-of- Way permit must be approved by Weld County Public Works prior to disturbing any ground in the County ROW. Any offsite impacts to adjacent landowners must be clearly documented with affected parties' consent, and any improvements on private properties must be documented in recorded easements on those properties. 4. The 5-year P1 of 0.89 inches is too small for onsite and offsite hydrologic calculations. The site is located in T1N,R68W,which should be identified from Figures RA-1 through RA-12 of the USDCM(Urban Drainage &Flood Control District 2001). Please utilize these figures to recalculate the 5-year historic runoff precipitation and adjust storm drainage facilities and appurtenances accordingly. 5. All reports, attachments, and associated construction drawings must be signed, stamped, and dated by a registered P.E. before the USR Plat can be recorded. 6. Please add the assumed flow path for historic conditions hydrologic calculations on appropriate figures so they may be checked by Weld County Public Works staff for completeness and accuracy 7. Please provide culvert profiles for all proposed pipes associated with this project for constructability. This includes all proposed onsite and offsite pipes. a. Culverts are numbered 1 through 4 in the appendix of the Final Drainage Report. Please clearly indicate the location of all culverts on the Storm Drainage Plan and Details, Sheet C103, and on the required culvert profile sheet(s). Page I of I 19 November 2007 C Documents and Settings\mmartin\Local Settings\Temporary Inieniet I'iles\OLKSD\l1SR-1607 Drainage Rev#I doc b. Please indicate the size, material type, length, invert elevations, and 100-year headwater(HW i00)of every pipe in plan view. Please indicate the slope of all proposed pipes in profile view. c. Please show the existing and proposed ground profiles over all culverts. d. The proposed inlet shall have a minimum drop of 0.1 ft to maintain flushing flows. e. The design energy grade line (EGL)for inlets shall be at least 6 inches below the final finished elevation of the grate or rim. f. The Ke's used for all culvert calculations in CulvertMaster are too low. All flared-end sections shall have a Ke of 0.5 or greater. The detention pond outlet pipe shall use a Ke of 0.5 equivalent to a square edge entrance with headwall. The 18-inch corrugated metal pipe shall utilize Scale 1 (Ke= 0.5) from Chart 2 in hydraulic calculations, with a Manning's-n value of 0.025 by Weld County Storm Drainage Criteria. 8. Contours must be shown for a minimum of 200 ft outside the project boundary, or far enough to show no offsite storm flow contributions to onsite property. 9. An erosion control plan must be included as a document in the Final Drainage Report. a. An installation detail and termination detail is required for all rock riprap protection. b. Please specify a geotextile filter fabric, or approved gravel filter, and support the design choice with engineering calculations in the Final Drainage Report appendix c. Please calculate the required length(L), width(W), thickness (t), and median rock size (D50) of all rock riprap outlet protection at culverts and non-culvert locations, and identify on the plan view portions of the culvert profile sheets in the construction drawings and the map pocket of the Final Drainage Report. d. All rock riprap channel protection shall extend to 6 inches above the calculated 100-year EGL or 12 inches above the 100-year WSEL, whichever is lowest. 10. Please size appropriate rock riprap or other revetment for the detention pond overflow weir using engineering calculations consistent with guidelines published in Chapter 8 (Hydraulic Structures) of the USDCM(US&FCD 2001). 11. A standard detail sheet for all temporary and permanent erosion control features must be provided in the map pocket of the Final Drainage Report. This sheet shall be stamped, signed and dated by a registered P.E. Recommendation The above comments are prerequisites and shall be fulfilled prior to recording the USR Plat. The applicant shall address the comments listed above during this Use by Special Review process. Comments made during this stage of the review process may not be all-inclusive,as revised materials will have to be submitted and other concerns or issues will arise during further review. The review process will continue only when appropriate elements have been submitted and outstanding issues resolved. Any', concerns must be resolved with the Public Works Department prior to recording the USR Plat.* CC to H I:SR-1607 lilt Olt:Hal- Don Carroll PC 6v Post Michelle Martin,Planner Don l' ituann..4pplic am Camel on I 0V1lIces.P.L..Engineer Page 2 of 1 19 November 2007 C'.ADocuments and Settings\mmartinALocal Settings\Tempo�Internet F,IesVOi.KSDAUSR-1607 Drainage Rev,'I doe • • • • • FINAL DRAINAGE REPORT • • FOR • RECREATIONAL STORAGE SOLUTIONS • • • • • • • Prepared for: • • Donald J. Eymann 13738 Star Creek Dr • Broomfield CO, 80020 • • • Prepared by: • • TETRA TECH • 1900 South Sunset, Suite 1-F Longmont, Colorado 80501 • • • Tetra Tech Job No. 80-5264.001.00 • • October, 2007 • • • it TETRA TECH • • • • • • • • mit TETRA TECH October 25, 2007 • Mr. David Bauer, P.E. Senior Engineer • Weld County— Public Works l 11 l H Street • Greeley, CO 80632 • . Re: Final Drainage Report for Recreational Storage Solutions • Dear Mr. Bauer: • • On behalf of Donald J. Eymann, we are submitting the Drainage Report for Recreational Storage Solutions. The proposed site includes: covered and uncovered graveled parking, . garages, an office building, a paved customer parking area, and a site detention pond. The enclosed report provides information on the historic site drainage and the developed drainage • design for the proposed site. • If there are any questions or comments concerning this report, please feel free to contact us. • Sincerely, • • TETRA TECH • • Ruslan Asadullaev, E.I.T. • Design Engineer • • S • • • i • S • r • Tel < '27 fax ' .J. er-i h:cri R:\5264 \001\documentsDrainage\Drainage Report.doc • 1 mit TETRA TECH ENGINEER'S CERTIFICATION I hereby certify that this Drainage Report for Recreational Storage Solutions was prepared under my direct supervision in accordance with the provisions of the Weld County Code and the Urban Storm Drainage Criteria Manual, and was designed to comply with the provisions thereof. 0 _ ..% —RpD0 LI s��1 A GO•e�k- � .%' Camero' Fplkes ' Register Btofessional Ecagineer State of C.1 ir"ado N0. 4 d'8 • 4 ° • • • • • • • • TABLE OF CONTENTS Page 1.0 Introduction 1 2.0 Intent 1 3.0 Existing Site Topography and Drainage Flow Patterns 1 4.0 Analysis and Design Criteria 2 5.0 Water Quality 2 6.0 Developed Drainage Characteristics 3 . 7.0 Offsite Flows 3 8.0 Conclusion 3 APPENDICES ID Vicinity Map A . Site Properties B Historic and Developed Runoff Calculations C . Detention Pond Sizing D Culvert, Ditch, and Riprap Sizing Calculations E . DRAWINGS • Historic Drainage Plan Back Pocket . Drainage Plan Back Pocket 0 H _ i . FINAL DRAINAGE REPORT FOR . RECREATIONAL STORAGE SOLUTIONS WELD COUNTY, COLORADO 1.0 INTRODUCTION The proposed Recreational Storage Solutions site is located in the Northeast Quarter of the Northwest Quarter of Section 25, Township 1 North, Range 68 West of the 6111 . Primary Meridian, Weld County, State of Colorado. More specifically the site is located at the southeast corner of the intersection of Weld County Road (WCR) 6 and Union Pacific Railroad(East of CR 11). The site is bounded to the north by WCR 6, to the west by the railroad, to the south and east by the Talbot property which is agricultural . farmland. The subject property was historically used for agricultural purposes up till the present year. The site contains 12.91 acres, more or less. (Please refer to Appendix A far Vicinity Map.) . The proposed development will consist of covered and uncovered graveled parking, storage garages, an office building, a paved customer parking area, and a site detention pond. 2.0 INTENT The purpose of this report is to provide a storm drainage design for the Recreational Storage Solutions site. This report examines the historic stormwater runoff through the site and describes the proposed onsite drainage. Developed runoff will discharge into the . detention pond that will detain and release a portion of the major storm flows. This drainage report provides the calculations for the developed runoff and sizing of the on-site storm drainage system and the detention pond design. . 3.0 EXISTING SITE TOPOGRAPHY AND DRAINAGE FLOW PATTERNS The existing site consists of farmland. The site generally slopes to the northwest corner of the property. South and east boundaries of the site are located on a natural divide and no . offsite flows are expected from those sides. A roadside ditch along WCR 6 collects the . storm runoff off the road to the north, while the railroad easement contains the storm runoffs from the east side. According to this information, no offsite flows affect the site. The majority of the property historically drains from southeast to northwest and onto the . Union Pacific railroad easement, where it is released to the north across WCR 6. According to the United States Department of Agriculture Soil Conservation Service in cooperation with Colorado Agricultural Soil Survey of Weld County, Colorado the site soils belong to the Hydraulic Soil Group C. Site rainfall depth information was obtained using the NOAA ATLAS 2 maps. (Please refer to Appendix B for the site properties calculations and NOAA maps.) 0 - 1 - I Historic runoff coefficients of the site are C5 =0.162, and C100=0.508. Historic site runoff was calculated to be Q = 2.09cfs, Qtoo = 19.75cfs. (Historic flow calculations are shown in Appendix C. Please refer to Historic Drainage Plan in the back of this report.) 4.0 ANALYSIS AND DESIGN CRITERIA This report was prepared in compliance with the Weld County Storm Drainage Criteria and Urban Storm Drainage Criteria Manual. The initial storm was based on the 5-year storm frequency; the major storm was calculated for the 100-year frequency. Since all basins were less than 160 acres in area, the Rational Method was used in the calculations for the runoff flows. The runoff coefficients (C), applied in the Rational . Method, were weighted based on the historic and planned land use. The required detention pond volumes were determined using the FAA method. Detention Sizing: The site will detain the storm runoff and release flows at the 5-year historic rate of 2.09 cfs for the 100-year storm. (Please refer to the calculations provided in appendix C and Drainage Plan in the back of this report.) The detention pond is . designed to detain and handle the 100 year storm. The 100 Year water surface elevation in the pond will be 5137.93 Detention pond and outlet structures were sized by using the FAA Method. (Please refer to appendix D for pond comparison calculations.) Culvert Sizing: All culverts have been sized using the Manning's Equation. A roughness coefficient (n) of 0.013 was used for concrete pipe. Culvert sizing calculations are shown in Appendix E. 5.0 WATER QUALITY The proposed water quality feature for the Recreational Storage Solutions site is a water quality capture volume located in the bottom of the detention pond. The water quality volume was sized in accordance with the Urban Storm Drainage Criteria Manual, and the water quality feature was designed to handle the runoff from the whole site. All of the site runoff flows are designed to go through the water quality feature located in . the bottom of the detention pond. Required site water quality capture volume is 0.289 Acre*ft. Per Urban Storm Drainage Standards 120% of the water quality volume will be provided for the site. The proposed water quality volume drain time is 40 hours. A plate with water quality perforations will be used as a water quality orifice for the pond. (Please refer to appendix D for Pond Water Quality calculations.) - 2 - S . 6.0 DEVELOPED DRAINAGE CHARACTERISTICS Runoff from the site will be directed by means of overland flow and storm inlets to the detention pond as shown on the drainage plan. In addition to the detention volume, half . of the water quality volume has been added. According to weld county standards, the detention pond is entitled to release stormwater at a rate of the 5-year historic flows from the site. With a release rate of 2.09 cfs the needed detention volume is 2.30 Acre*ft. By taking into account that half of water quality . volume can be used as part of the detention volume in a 100 year storm, total required volume of the pond has to be 2.45 Acre*ft. The water surface elevation in the pond in a 100 year storm is 5137.93. Pond has been designed to have a freeboard up to the elevation of 5139.00. From this detention pond storm drainage will be released to the northwest by means of an 18" outfall culvert. An orifice plate located over the outlet pipe will ensure the release rate out of a pond to be no greater than 2.09 cfs. In case of emergency clogging of the outfall pipe, an overflow weir was designed on site. The overflow weir was set at an elevation of 5138.00 and was designed to pass the full developed 100 year flow. The design depth of flow used for weir sizing was six inches. Overflow weir width is 41ft. 7.0 OFFSITE FLOWS • Offsite flows were calculated for the improvements in the WCR 6 right of way. Historic i flows from the property to the east of the proposed site flow to the right of way and then flow west in the borrow ditch. Historic flows from this area and from the right of way . were calculated to be 20.53 cfs. Though a natural pattern for the flows from this area is to drain north, currently there is not a sufficient culvert that directs these flows to the north. A proposed inlet located in the WCR 6 right of way will pick up these flows and carry them in the culvert under the road. A culvert out of a pond will direct the detention pond release flows into the proposed . inlet. The flows from this inlet will be directed to the north by means of a 24" culvert, and released into a roadside ditch. Ditch improvements will be done on the roadside ditch to handle these flows along with the north side right of way flows. The ditch will be extended to the west and then south and empty out into the Union Pacific railroad right of way, where this runoff historically flowed. 8.0 CONCLUSION . In conclusion, the proposed drainage system for Recreational Storage Solutions will . detain the developed 100 Year runoff and release not more than the 5 Year historic flow rate for the site, thus the drainage will not adversely affect the existing drainage patterns of the site and areas surrounding the site. A copy of the Drainage Plan and drainage calculations follows for your review. - 3 - I • • • • • • • • Appendix A • • • • • Vicinity Map • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • P I • • I I • z E writ; 1RM II rn• ZII t k:F'IusW W P. -a- T '° 4 " 4 � t s t z el =Q v�g'� ,�r�.'n°�'L .a ,,,�'Py. J fro t i 4.z r- v, C o A II• ii; U to 142 ,,,, 1 �e'� . ' . ir, '� pO II z w / tr • o I- • may/ �y ryj. 4V II • • • • • ID • • • • • • • • • Appendix B • • • • • Site Properties • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • U DRAINAGE CRITERIA MANUAL (V. 1) RUNOFF Table RO-3—Recommended Percentage Imperviousness Values Land Use or Percentage Surface Characteristics Imperviousness . Business: Commercial areas 95 Neighborhood areas 85 Residential: Single-family Multi-unit(detached) 60 Multi-unit(attached) 75 . Half-acre lot or larger ' . Apartments 80 Industrial: Light areas 80 Heavy areas 90 . Parks, cemeteries 5 . Playgrounds 10 . Schools 50 Railroad yard areas 15 Undeveloped Areas: Historic flow analysis 2 C - . Greenbelts, agricultural 2 Off-site flow analysis 45 . (when land use not defined) Streets: Paved 100 Gravel (packed) 40 . Drive and walks 90 . Roofs 90 . Lawns, sandy soil 0 Lawns, clayey soil 0 See Figures RO-3 through RO-5 for percentage imperviousness. CA =KA + (1.31i' - 1.4412 + 1.135i-0.12 for CA ≥0, otherwise CA=0 (RO-6) Cm, = K,„ + (0.8581' -0.786i' +0.7741+ 0.04) (RO-7) CB =(C.A + LCD)/2 2007-01 RO-9 . Urban Drainage and Flood Control District • • • • DRAINAGE CRITERIA MANUAL(V. 1) RUNOFF • • Table RO-5—Runoff Coefficients, c • Percentage C. • Imperviousness Type C and D NRCS Hydrologic Soil Groups 2-yr 5-yr 10-yr 25-yr 50-yr 100-yr • 0% 0.04 0.15 0.25 0.37 0.44 0.50 • 5% 0.08 0.18 0.28 0.39 0.46 0.52 10% 0.11 0.21 0.30 0.41 0.47 0.53 • 15% 0.14 0.24 0.32 0.43 0.49 0.54 • 20% 0.17 0.26 0.34 0.44 0.50 0.55 25% 0.20 0.28 0.36 0.46 0.51 0.56 • 30% 0.22 0.30 0.38 0.47 0.52 0.57 • 35% 0.25 0.33 0.40 0.48 0.53 0.57 40% 0.28 0.35 0.42 0.50 0.54 0.58 • 45% 0.31 0.37 0.44 0.51 0.55 0.59 50% 0.34 0.40 0.46 0.53 0.57 0.60 • 55% 0.37 0.43 0.48 0.55 0.58 0.62 <c-- • 60% 0.41 0.46 0.51 0.57 0.60 0.63 65% 0.45 0.49 0.54 0.59 0.62 0.65 • 70% 0.49 0.53 0.57 0.62 0.65 0.68 • 75% 0.54 0.58 0.62 0.66 0.68 0.71 80% 0.60 0.63 0.66 0.70 0.72 0.74 • 85% 0.66 0.68 0.71 0.75 0.77 0.79 • 90% 0.73 0.75 0.77 0.80 0.82 0.83 95% 0.80 0.82 0.84 0.87 0.88 0.89 • 100% 0.89 0.90 0.92 0.94 0.95 0.96 • TYPE B NRCS HYDROLOGIC SOILS GROUP 0% 0.02 0.08 0.15 0.25 0.30 0.35 • 5% 0.04 0.10 0.19 0.28 0.33 0.38 10% 0.06 0.14 0.22 0.31 0.36 0.40 • 15% 0.08 0.17 0.25 0.33 0.38 0.42 • 20% 0.12 0.20 0.27 0.35 0.40 0.44 25% 0.15 0.22 0.30 0.37 0.41 0.46 • 30% 0.18 0.25 0.32 0.39 0.43 0.47 • 35% 0.20 0.27 0.34 0.41 0.44 0.48 40% 0.23 0.30 0.36 0.42 0.46 0.50 • 45% 0.26 0.32 0.38 0.44 0.48 0.51 • 50% 0.29 0.35 0.40 0.46 0.49 0.52 55% 0.33 0.38 0.43 0.48 0.51 0.54 • 60% 0.37 0.41 0.46 0.51 0.54 0.56 • 65% 0.41 0.45 0.49 0.54 0.57 0.59 70% 0.45 0.49 0.53 0.58 0.60 0.62 • 75% 0.51 0.54 0.58 0.62 0.64 0.66 • 80% 0.57 0.59 0.63 0.66 0.68 0.70 85% 0.63 0.66 0.69 0.72 0.73 0.75 • 90% 0.71 0.73 0.75 0.78 0.80 0.81 • 95% 0.79 0.81 0.83 0.85 0.87 0.88 100% 0.89 0.90 0.92 0.94 0.95 0.96 • • • • • 2007-01 RO-11 • Urban Drainage and Flood Control District • • IP •H:IDFITABLE FOR ZON• E ONE IN THE STATE'OF COLORADO • Zone 1::South Platte,;Republkan,Arkansas;:and Cimarrlan,River Basins. . . Project: RV and BOAT Storage Enter the elevation at the center of the watershed: Elev = 5,134 (input) • 1. Rainfall Depth-Duration-Frequency Table Enter the 6-hour and 24-hour rainfall depths from the NOAA Atlas 2 Volume III in rightmost blue columns . Return Rainfall Depth in Inches at Time Duration Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr 6-hr 24-hr (1) _ (2) (3) (4) (5) (6) (7) (8) (9) (10) . output output output output output output output input input 2-yr 0.09 0.13 0.17 0.23 0.30 0.71 1.01 1.50 20.70 . 5-yr 0.26 0.40 0.51 0.70 0.89 1.30 1.61 2.10 2.81 10-yr 0.37 0.58 0.73 1.01 1.28 1.65 1.93 2.37 3.20 25-yr 0.51 0.80 1.01 1.40 1.77 1.17 0.71 . 50-yr 0.65 1.01 1.27 1.76 2.23 1.47 0.90 100-yr 0.77 1.20 1.52 2.11 2.67 3.02 3.28 3.69 5.05 Note: Refer to NOAA Atlas 2 Volume Ill isopluvial maps for 6-hr and 24-hr rainfall depths • 2. Rainfall Intensity-Duration-Frequency Table Return Rainfall Intensity in inches Per Hour at Time Duration . Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr 6-hr 24-hr (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) output output output output output output output output output . 2-yr 1.03 0.80 0.67 0.47 0.30 0.35 0.34 0.25 0.86 5-yr 3.09 2.40 2.02 1.40 0.89 0.65 0.54 0.35 0.12 10-yr 4.45 3.45 2.91 2.02 1.28 0.83 0.64 0.40 0.13 25-yr 6.16 4.78 4.04 2.80 1.77 0.58 0.24 0.00 0.00 • 50-yr 7.77 6.03 5.09 3.53 2.23 0.73 0.30 0.00 0.00 . 100-yr 9.29 7.21 6.09 4.22 2.67 1.51 1.09 0.62 0.21 • UD-RainZone v1.01a.xis, Z-1 2/2/2007,09:15 i I • • • • One-Hour Rainfall Depth Design Chart • 300 • , • I • - • j 2.67 • • 2.50 • 2.23 ♦ • • . 2.00 f • • . U I 1.77 c • ` . r . m 1.50 .;.. — • • c 1.28 •re .• 1.00 — • 0.89 ♦ • • • 0.50 , _ . • .. • 0.30 ♦ I ' • 0.00 . • 2-yr 5-yr 10-yr 25-yr 50-yr 100-yr Return Period • • • • • • • • • • • UD-RainZone v1.01a.xls,Z-1 2/2/2007,09:15 • 0 IP li li • S . 104 • 108.. 107 106 _ 105 194 109 102 t; ,}mil} _ �. , �..: C1 ,u '.�� i ( � . • I I�_ 1 -. ` 'I !' • "31RJ i ll ••:: �y1 .. I : •Y'l _,I> „ F• .i.Uti - • 1 I' < '-1'•�• .--6.,i•,•-i....:• •, �i .yy - 's ��� -i'y ` `I f - •1• •- 1. • 1 • 1 ' `T, ` j iT - i�} Y �� `' i'1 .'aunt' j - i- -� I. r • a►� `' 1 �:; `1 :J • f I • i1 unpin I lot 1' ,1 • , , r I' .. /). - : utii:- -- a,•-�,_,--V ••^•tar--••• • • 4 ., N s1 �.... I . .. • ,. 1 I , : 1 i�1 { 1 I ;' � •_ n , , •� ,�s. K "�� .'•"" �1i1�' 1 :, T •t.,_•_,,00..: , .T__, .,,,I f,>,{ SDt'.4.. • 1 ' e- I 1~1�'Ir [ ' II, • ii ri?r 1 l 1- {•• y„ ,Irkf �y y • I �C 1'p... d ` l \� I. — _ ' work': ,'t I S • l • iL..'•-���f�� �Ot I 1 I� t 11 � �1 . 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I, 1 • i Z. li Tt .•%, 1 — I j HIat IRCUM jj �_ \. r.ia ..:✓ il it:1 '1� %� .:. lF; � �.��+ ' x•tk8o r: .. •».`,�•iI},•I wd4 \ :S� 1' \..!-. 1 ....- N 2E'pl� ,. t i+�•` '`��r f i r - F� I '. • •[I ? -J c T I ui1 L �••4,.1 raY 1_ ".y • 1 i • I. • (f�tii I e, C \\ i �T • 4� `� ' '° ''.. .` - ` \ `•._".-fir`• r�t ,��!.,�+ ��_ —.l�.,,. _.__T-'Nf51H� '.�., Illt •` • i �•:- jt' \C;. `, EII ' - 1 •,S, r,R:l I' i , � _• _ __14 11-1 i � f r`s ' Vi'•+ Ld' •�` ,iur I' ei. 'f „ • 04,11,k09•1 •'K r, "....7'..—-7 r i• • ' ry$ / , ,, • -1 1,. r... Ir '"1 �arq►.i �� �s: '✓ C . • ••• • • 11 I I �. 1, J [ f r � .T - r'i� +•}h qua,• ! I I '37 I'`" �'_I-:a-i_-I-. a.F;;�:.s_:y •►•• _ r�i.•� .If �� .r � f �.� t•, �,1. .� I} /�n�n N 4 `711 .• u11 71 11 COLORADO rau ALAS i Ike..w - '''.7144r4211 i s • 10 0 10 20 30 f0 '. ; : emend by us a..irw.t •K,ew.oR�c r.rA �m rro-ewn — II TL Mr1LS OF II 0 24414 PAECM(7R7f011 i j f— '�� --a lA1tFS • +.+b .1oaM baud 1[I man of AN:11R/[:. I) �. Unix. or.ba ' 109 1O8 1O7 ,U4 . 105 10< . 103. 102 5 . • • • • .;;. • . r • • .. • "' .. ....; 'i::'::::•:: : .,e. .....a.. ..... .. • .... • • • • • 217 •..r_.�_.._.,.:•..e._ -.. ..::k.... :.F_.. ........ . s`sx:� t:�.4:-:a��F ;'•_:�=:'pis::�.� ...- ��'?�C��_:i:.'_':; ...—..._...., a"�wa.,� F'�'`'�.:.:......,�'?£...•..., .. ;,.... ..y -,,t,,,=-••,-,.,--..,„•,,:••:.--.„.,::...:,....,:::-.-„:•-•-..-. • _ ,�r.:r.�;t ri. r:,�?�i......z,.i a,;s:'.-:, ...Y�..: _ • •.............. .... �.•.......X...... -... 5...24^4........._. .... - .. ........ice.......:....... .... ..... .. 1,,..,.1.'..:. _ • . 1O9 .... '.:. 107 _ lob ros' ' 104 103 102 41— �--,� _ _s _11-.•,.. tt e a iln rat 310 .a_ _ p1 '• 1 + - {t > L• tea✓ • At uin '��"�� 1`:' t , i�FW NC. i. l -> � if ? Av • L f t G2it:EY _ _•. 4 ----1..,:,..%',,., i ' ' �r.tif �1 {�n J�q d11 V'1 P!V ?, :�,:a�FJ1- t� • �[:r}7'.• t -•} 111 �`i Li 7_ . 1 �` � te, . 1„,.a SG:"SOr�t� �5 — i f •—r� •_ /\_ , •a .t ' `} it ? __,. ...,....,4..... . ,,,....3../� �. . 3 _ ` iCl ,la, ! Y �� <alR��\� �.•a + i. .`�'4 �' .. ..:4 . ` F i . .� '1, n.- cy\ _fib :✓ ' a /' \ `e.' tr` t t• i •\, `'•�\ r w� '�>- ) • • '�"� t �'s j4• {t• i • t -.r. • l'Ti:;tifet0' ( f _ _ tJ _ '—_)1 yJl,,,���//`� yl` 44' • f. • 1. —' r' taws 38 ve. e' i ___ Y.�•f .l� 1Rfii�'yta1 ',� •� •\\.\Q•`s. �\'',` t .,.� •a • •� -•� •' .i k,...'( ws y . a 1.• •—ithomu . • �..___J...• —T - ., 1.{ ,,,.� i } ila i • '' /r s� ;'— • C 1 �q ��t ' n tf� ! f r `' ... iro- L COLORADO 111111.4 - �Iws4 •,,: .. JO 0 76 20 30 (Q • ,i._:{`:: ....dbrusuwie.M a.--.ee __ ..... .._. .. _._ F--, k�.. ..'�-1= MLLES. n.eaw..�.s.,+oa kanaa11.....17111.. .177. 'iEritatioFoim{ 1 • �ww..b'ra'u., 4�p.fneMM •", '` 104 tab 107._ tt)6 .. 10S : .104 .. X103"' 102 •'.. ' • 6. 9 • •.:. • • •• :. - . •k • . . . •• • • • • IP S104 I08 107 106 103 104 103 102____ C�'1 , v ( F° � , p > A . Af@'S' / $$# 'a, iVh / Pita sr ��}i "'' i i ' _-- -__,"i SAG �r 1 � T-_. .'.ti{. .,.,n 1ii1' 'gym • , ` i :1 1 — ,# it A6' � I4ROVa� v.� '1"+' . _3�.. .Fx>��sl°..�i M nau nsi t _L J-. f -r--- -'i 1 l �A r r ,I ti w'i� �� ` •::e lrJsr; 'gip;; } u,. cc vIP I' Jr �.¢h'.d. f �'tw 1 g'' wmxaoo r 1 'A i� l . ,cam- 1. 1 T - 1 , • Rd�7„r' ,3 I N �lib '4 AGtx d-, i ,�t0, Rw 1 r�� 1 i , 1 t. x �F� / ICY - 7 � � a i (� t 1�-,'8T 1fla �C's..._._. - J 3......----It-6 ' '/%. ,6� Ll -+-. - i� (�/���f/��pp a a , X141 - su s av e 1 —�' � . coLDRADo: I N0.,IARAI 2MAn+P Fl.n31 0 I IS ,6 m m 'm.' 1P 4 =data.o stir r a �OF 100YN um PRE0WITAT10a ( AKE$ wnwV4 g. 61 3 1111EMAS OF Ni INCH WI ; i ! 104 IQ$ 107 --..----106 105 104 103 --� ......107 P 50. 6— ,i, O S S O S • • • • • • • • Appendix C • • • • � Historic and Developed Runoff Calculations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 0 O 0o O rn - h a N O 0 - NO N O O oo DO . VI OT N -,O - O N d N N O O C1. co ▪ M - IA N . i" O Vl O, O . tri- O b oo r O - O I . V F N O r W F - Vt V . 00 . Q N b h O 7 O O O Y C 0 o75 iM c oo U V — O O . C w r ra ao CD . C/) J vi r O o in •-•�▪ N. N O O- a V «, O O F• a C O o o U ' v . C cO > V o O O A O at > v . —(�j Q O F M v = a ✓ to N N co ID fxn • O N p O O O O d O - xr' 0 - C - � - c U vao - o F . O o a ._ IP o v p G N v1 a O_ a N II O O O O = - _ ui CI p V I as V 4 p O II O-S O cc, .-. O o ot — c O o p N O O . Ca -. 2 I •-. N t1 N Ea I = _g 6 o r- N y N T 0 0 0 Q o V y = p p p C v I Q or 0.. E' co co W CO Cq C II U —, N o co II p C O O O O 5 V O rn Q' 0 0 0 o 3 W O U 9 p oo ¢ (i� O 9 II a.J a v v �y p0.� 4 0 m e . p > p O 4. Ts EL" <o Q 3 n y > - 5 Ir 0 FINAL DRAINAGE REPORT RECREATIONAL STORAGE SOLUTIONS WELD COUNTY, COLORADO HISTORIC DRAINAGE ANALYSIS Historic stormwater runoff flows were evaluated using one major drainage Basin H for the site. . Three offsite basins (Basin OS -OS3) were used to calculate offsite flows. (Please refer to the Historic Drainage Plan located in the back pocket of this report for basin delineation.) The 5- year storm event was used for minor runoff calculations and the 100-year storm event was used for major runoff calculations. The drainage basin was less than 160 acres; therefore, the Rational Method was used for all stormwater runoff calculations. Design Storms: Minor Storm: 5-year event Major Storm: 100-year event Runoff Quantities: All historic basins were less than 160 acres; therefore design storm runoff rates were calculated using the Rational Method. Runoff Coefficients: The percent imperviousness was determined for the anticipated land . use from Table RO-3 of the Urban Drainage and Flood Control District Drainage Criteria Manual. The runoff coefficients were then taken from the Urban Storm Drainage Criteria Manual. Soil Conditions: Ulm Clay Loam is the predominant soil type at the site. Ulm clay loams are classified as Hydrologic Soil Group C. Overland Flow Length: Flow length, L, was considered to be the furthest distance from the . know discharge point to the upstream end of the basin. Time of Concentration: The time of concentration for the historic basins was calculated using equation RO-2. Calculations and Urban Strom Drainage Reference are included in this section of the report. Rainfall Intensities: Rainfall intensity values were calculated using equation 28.5*PI I= taken from the Urban Storm Drainage Criteria (10+Tc)o.7se g Manual. Historic site and offsite flows are included in this section of Appendix C. . © TETRATECH • Professional Engineers • • Yt V h 13OO! $yara B Job No.: gQ- 5 2".QO/.OQ . Client: Sheet of Description: . .!///scone- Sib /mpervioouuaesS Designed By: HA. Date: A";22/07 cnq kno ends Checked By: Date: //iS _br/t et /in enviousness = o (drkvn Drainage Cr A,, /Anna" ( V So, // /�,c G car C • .. _ A 4 (ACMnc 7c,ivie g(/ ' £n of 4Je%enA. ..//slant ore .• L = 0 /CZ ! ! C,G v o. z 6 z (,-o_ 0. 6-O3 ! . i I . tub] TETRATECH • Professional Engineers/ C • Client: V 3 /3/oat Fixes✓�orette Job No.: £-'S2Ct.00/.00 Sheet of Description. N'sIcr,c Fixes Designed By: RA. Date: Sr 11 X09 Checked By: Date: � • , ' o sBs- (.1. 1- C) L , o.Bo ZMkn 'boo C = ,0 16' 2 (140 ..3) _µ0 . 162) J 600 1 - Q015.�"g3 ° 33 , ,E • . / p .i Ars( R0= d saw cr3, ' V zi • .3criie.' :d9. b ; r / 8 7S_ of. t _rt ," E 334h? 51 ,,, f 62 J D 2) E !�. . .- f/G f%, ' f - S r .5-form = o. s9 amce)-# 701 ek A Caen _ 1 - jc40 � .2.69 Sr 7 2sS - o•O.89 /� .i .-�`tsi- -at.575' .1. 0o /nor ... l� 28.S - 2.6 9 _ / M/ : _ C.f. . ( e PO -4 c� /62 (./��n� XLC) • . Coo - oux 6s o, 6 • CO'- 2°Z,9{4 = 2 . 09 0'oa P.cog • 3_40( 12.5. = els • 7--;;Le; / //is-7/O//c, 4A AZw /n a 3:24r S .r-•, is 2 09 e4 ID TETRATECH • Professional Engineers • • Client: M7//9[6//02/ t�]�rnie g Job No.: &U—SJGV4O/O/3 Sheet / of -� • Description: //4—•?n.2.G// icrs' Designed By: ,e,n Date: /2/i 0007 • /911/c/14 n 7/ F/�•t6/i7 ARr77s Checked By: Date: as in 05 16 an771 dK A7q <yiypa moo, 9-8 acres OP ✓lereye c5/2o9 of Fly, Y os7Li ' O. 00(osl /f//f z� = a895 (/./ (69s (E. 7Po-3ca1ur%notgr Gam;/cna jig P'i ,eO-5& . Gi araA = 6co f/ 4 = O.ay5(/./ -O.441600 43 7n.n (a.cob• • v= Ca(S°.6 (4, ,eO-v(.zintzy.,, Ct7/ei?aginrrtbl fr7, ,eO (O� s e #jv 7 (Acorn Idle eO ��zc iazg6 6i-r/e r7u f-//acuz/ ///, a"-op t"= 7 (o. o0,59°.s .= O,5w 1t = ,,,?278 -- 60O = /778 . t -- Ls/6.0 l! /7781(60 -0,a) _ ✓; 907 rn,`o • '. .tC = v3. 9 4- 6"a. 96. gg-a ,,,m (ggeuctA•77. .,�O • sy O, m,/Pe e5 • /7/, _ = a7 • • cat 51 - f? (r. -3 ✓�izz;inage (it/477kr,/v`arcaz/ G/, 724 -la) • S yr /98;6 D. 59 0 G 5/S in/�r • (/0 7-'9G, bo?)m7" • zec yr ag :,267 / 95/ /,7/i, S (/0#94. 9a)°.7+e; I 1 [uib] TETRATECH • Professional Engineers • • Client: PVfer�'��r�'SOO t 5—Z77t9 Job No.: CO—Eab n6/ Sheet a of .2 /-fi Description: i-iG Designed By: /W Date:.i X 27 i9/ ,-% ,rnn77/.L,&zz2/vzf' Checked By: Date: sin OS Q 0.gA ._ _ (Eaaeari ,P.o- Z)fainaye !/1 26-3) D CS = a /6-1 • .9-v. 63'' acteu Qs & /&2 • D. 6 .4„2O. 53 = /5cfs � . /OD e- Pic. rs•. _Teo, _r . %Tin/Iw- ... • 0-3 �s . Qmo = CJ.c08 - /: vq' - O. 53 = 2c2 az3 c/3 i t 9 TETRATECH • Professional Engineers[.uiiyam c / Client: /VA' �ilatcSA r 'a Job No.:Se- 5.26400/00 Sheet / of a Description: // si/nri>: >Z44 `2,-.2.#/nz4/en.S Designed By: L/ Date: I' 1/4067 • OA7t6 0? (basin OS J Checked By: Date _ ... 4.7 ,.d .7 , -epa - a.D9a5 ac. a F 19 9Z3,14 /re /03 • 4nizye 67776 a/t CZty /0, . Cy 0.. /Ga _ _o,a95(x/ G ,7 /� . / �� ._ �' 3 (/Pair" Grz ler�cG✓v�aiiaa-1 d/ �O 5, O 6! = °'"7l5-0/-69-/6-2)//43 L`'. - /7/9/liit9• • 6 3 1-tit = c9 /7 /9 —,> _ /7./9 A`i ( . a'-c) . - //© ✓� a. c- (& cz tln /VI..- �. rL/ra. e G/'�tOi eCG a//u"a� /�, .r.. -ro / cyr = GP8,ar r .'8 j (!Df/719)°''fr4 • / iocite" -ax 6- a67 = 5; 7r7 in/Ar- e P9c"1") 0C A ( 59. RG`/j Dzziii¢ga Cam•4,-a arueed -3) y, F�w • 5 = O./aa' • ✓4- = a 09a5 atrss • 17t) TETRATECH • Professional Engineers • c—/ • Client: Etter ✓560../ c]L¢q17:2/..--4/127707-AS- / // Job No.: �O-6aG4i:00/.00 Sheet a of a • Description/�:' /A-An; �s.i Cv/ic/27707-LS- Designed By: .C.a Date. 4-7, 0007 • 41/;s'e tB (/&as/n &≤2) Checked By: Date- ▪ Oar ri Goo = a6os -17Oc = 5", 6,2 . Al a g acirys S S S S I . outTETRA TECH • Professional Engineers • • Client: re/'f ar CS‘triy9 Job No.: •577-.5.04y4 On/On Sheet of • Description: /4 ;,,--A4--/e ;,,-- r,G ��✓ �Clpp c,-�t1%.r7S' Designed By: LW Date: of VaOO7 .• 7)/%-i/9 ,i. nl%-, e t. (So;rec,2 OS.3 Checked By: Date: • • re7,42/ 710/77 .‘L 4 , / 9/ acres • • f/f/o� /Cti Ley/ aa00 • e (_4e M/A • O 57 .. :.. _ 4- = a/6a t• - a ars(//- 4)14 (E ,e0-a ,�,az,izare On4na I,6/ ,e0 5� tS ia.j3 • G; ,Q1 = 5"OD ' = O,a9a-y./ - O, re,F) 500 = 39. einda . O.00.17)°•33 t/= a„,s (Cy, eo s� %� ��, 6 G'.f/ &y n, i/, ,e0- Cv = 7 (,gym /-474/6 CO a l7,zzl z C,, cna l/Ian, / ry/ ,e0 -4. si, (/= 7 (0,6087.x" = 0 05 VP • 4 - a3v0 roc = /8.00 /1 • • 6 - Lt-/bav /80O //v0• aJ /05 • /� _ f ,Cr = 89. G S+ $«. /6" = 85, 8D .r. r, ( i.e—a) ew .00-cf.) . !-YO/n 47,0➢70f/X Vim! /coy. - o?/07 / r "-- 021,6 • I (6te, ,[A-3 LDrasr e Cr.�snc aa—/ !// 4i-0 001- e.)o.arG' • �g y� = 28; 5 o. KK9 = 0 703 ;n/k ip r fop yr aS.✓r- Z b7 // in/Ar 00r?Sb)12'1" U1 11 11 [lilt] TETRATECH • Professional Engineers • c � 11 Client: ,P/�.-FP ca�2/ c >YDrB Job No.: fro -5...-14,5t-eW OO Sheet -2 of -7 Description: f/ ,/G Designed By: .L#/ Date: a-27 8/>007 11 6567/e -76,7/ 722,45-. o'cs 5' Checked By: Date: 11 11 Q = Cr<1 (6-17,4:2 ,eo ter, ,eo a) 11 11 5�r /1w 11 11 C5 - /64.2 11 11 15 - _a 703 ;-7/ti. 11 � = i w a��s 11 11 _ O. 72 • O. 703 / ?/ = o, /scies 11 11 /2V 4- tini 11 11 Cn• _ 6" 5oa 11 11 Saa = air fry�tir 11 / 9/ acres 11, 11 Co, = o5ar • a// . 06 Gfs- 11 11 N N a N S I • FINAL DRAINAGE REPORT RECREATIONAL STORAGE SOLUTIONS WELD COUNTY, COLORADO PROPOSED DRAINAGE ANALYSIS . Stormwater runoff for the proposed development was calculated using one developed drainage . Basin A. (Please refer to the Drainage Plan located in the back pocket of this report for basin delineation.) Developed runoff rates for the 5-year and 100-year storm events were calculated • using the Rational Method. • . Design Storms: Minor Storm: 5 - year events . Major Storm: 100 - year event Runoff Quantities: All developed basins were less than 160 acres; therefore design . storm runoff rates were calculated using the Rational Method. • Runoff Coefficients: The percent imperviousness was determined for the anticipated land use from Table RO-3 of the Urban Drainage and Flood Control • District Drainage Criteria Manual. The runoff coefficients were • then taken from the Urban Storm Drainage Criteria Manual. • Overland Flow Length: Flow length, L, was considered to be the furthest distance from the • know discharge point to the upstream end of the basin. • Time of Concentration: Time of Concentration for the developed basin was calculated for the proposed land use as urban area. • Tc = L +10, where L was considered to be the furthest distance • 180 • from the know discharge point to the upstream end of the basin. • Rainfall Intensities: Rainfall intensity values were calculated using equation • 28.5 Pl I= use taken from the Urban Storm Drainage Criteria • (10+Tc) Manual. S• Calculations of the developed runoff flows are included in this section of Appendix C. TETRA TECH • Professional Engineers • • Client: JC// .N' <�/JCLL"CSfn/r ,4 Job No.:$J-5ae-si, 0/. 00 Sheet of • Description.J�titc r'e d'c Srf0 T,-.9nnizr�rr V sDesigned By: _sri� Date: .3/aao7 ca,/7/ n/WI Zit9�'i?..en/5 Checked By: Date: • ..De9ue*ac/ 5 4 7m7497-ncasncs0- (}-x om ladle ,CO- 3> ante., ofs - O. 877 ac vs 90 `o • COn6:fr - 0 0 S acr5s /00 • - G• S-a73 acres 70 • Zaan f. /o7 acmes a FIF • . Grave/ f 073 acres' 5`Ol • Array - acres /00� • • 777/a/a! 6.-; = 477. 271 acrHS. . . • I= 90 P 877'x/00 . 0.8 + 70 •6. Sa3 •_742? * s0• /073 -5/O0 . 008/ • /? 9/ti . S = ,6-6. 62a • 7Jra q `T /o ,AD- 5 A-7;7417 /2eae/�ec/ i natt Cnef`:c enfs - • • Ca = 0 38 • C = O1` • • CA, a, 4z9 • • ace O, ‘,?-1 • • • S. S. • • (it) TETRA TECH • Professional Engineers • • • << / • Client: fi V anq 80637t d74raye Job No.:10-Si?"'f 00 Sheet• ���of / P.A. ti/a Description. !Je✓e%/fie q// /1-706)-5" Designed By: '"� � � Date: O° • o� (' /on5 Checked By: Date: ! /4/I �n /I 4.2.E" � . /✓je✓a. Date- / - AV 'gnu; 4' .. .. _ �7 �^ • /c /fs/fco f 10 ' 1 O miry (.�_� RO •J ,„ D ,,,. .. C , va/7Z Coo = 0. 622 ( from oev, oruno/ C/; Ski) • — 2S. S W ,4'/7 n (�o+700.71C � -3 mDrain ,1e.-r4 anus/ • • Pt. L 2.6" ( T0! La /i in f .i x B) zS. s s 7 • �d + /$) ° ova .515 • . a7,te /heo, Draining to 14 /nncX = J.7 9_217 HG • • too CIA = 0. 622 - S. 5// '- /2: 914 = 44. o • • Fed aee/�ec t F4 1 £ t IOC !i ° GW tom in a r- S rn) • IS %*. b e.4 • RAINFALL DRAINAGE CRITERIA MANUAL(V. 1) • • 4.0 INTENSITY-DURATION CURVES FOR RATIONAL METHOD • To develop depth-duration curves or intensity-duration curves for the Rational Method of runoff analysis • take the 1-hour depth(s)obtained from Figures RA-1 through RA-6 and multiply by the factors in Table RA-4 to determine rainfall depth and rainfall intensity at each duration. The intensity can then be plotted • as illustrated in Figure RA-15. TABLE RA-4—Factors for Preparation of Intensity-Duration Curves • Duration (minutes) 5 10 15 30 60 • Rainfall Depth at Duration (inches) 0.29P1 0.45P1 0.57P, 0.79P1 1.0P, • Intensity(inches per hour) 3.48P1 2.70P, 2.28P1 1.58P, 1.0P, • • Altematively,the rainfall intensity for the area within the District can be approximated by the equation: • 28.5 P, T • 0.786 (RA-3) 00 + T. • • in which: • = rainfall intensity(inches per hour) • • P1 = 1-hour point rainfall depth (inches) T= time of concentration (minutes) • • • • • • • • • • • • • • • • • • RA-6 01/2004 Urban Drainage and Flood Control District • • • • • • • • • • • Appendix D • • • • • Pond Sizing • • • • 0 Water Quality Capture Volume • • 0 Detention Pond Sizing • • 0 Pond Outlet Structure and Overflow Weir Sizing • • • • • • • • • • • • • • • • • • • • • • • • POND VOLUME • •• RV and Boat Storage • Elevation Area Volume Volume tt tt2 tt3 Ac*tt • 5138.9 26320.21 131152.2 3.011 • 5138.8 26118.4 128530.27 2.951 • 5138.7 25917.46 125928.48 2.891 • 5138.6 25717.39 123346.74 2.832 • 5138.5 25518.23 120784.96 2.773 • 5138.4 25319.85 118243.05 2.714 • 5138.3 25122.37 115720.94 2.657 • 5138.2 24925.76 113218.54 2.599 5138.1 24730.02 110735.75 2.542 • 5138 24535.15 108272.49 2.486 c__ /OO jr WISE • 5137.9 24341.15 105828.67 2.429 ti 13 q.q3 • 5137.8 24148.03 103404.21 2.374 • 5137.7 23955.77 100999.02 2.319 • 5137.6 23764.4 98613.02 2.264 • 5137.5 23573.86 96246.1 2.21 • 5137.4 23384.34 93898.19 2.156 5137.3 23195.64 91569.19 2.102 • 5137.2 23007.78 89259.02 2.049 • 5137.1 22820.79 86967.6 1.997 • 5137 22634.67 84694.82 1.944 • 5136.9 22449.43 82440.62 1.893 • 5136.8 22265.05 80204.89 1.841 • 5136.7 22081.56 77987.56 1.79 • 5136.6 21898.96 75788.54 1.74 • 5136.5 21717.19 73607.73 1.69 5136.4 21536.18 71445.06 1.64 • 5136.3 21355.94 69300.45 1.591 • 5136.2 21176.49 67173.83 1.542 • 5136.1 20997.82 65065.12 1.494 • 5136 20819.93 62974.23 1.446 • 5135.9 20642.83 60901.09 1.398 • 5135.8 20466.51 58845.62 1.351 • 5135.7 20290.99 56807.75 1.304 5135.6 20116.25 54787.39 1.258 • 5135.5 19942.2 52784.46 1.212 • 5135.4 19769.25 50798.89 1.166 • 5135.3 19596.97 48830.58 1.121 • 5135.2 19425.5 46879.46 1.076 • • R:\5264_001\documents\Drainage\Pond Volume.xls • • IP a POND VOLUME III • RV and Boat Storage • Elevation Area Volume Volume • ft tt2 ft3 Ac*ft • 5135.1 19254.86 44945.44 1.032 5135 19085.08 43028.44 0.988 . 5134.9 18916.13 41128.38 0.944 • 5134.8 18748.01 39245.18 0.901 • 5134.7 18580.72 37378.74 0.858 • 5134.6 18414.27 35528.99 0.816 • 5134.5 18248.81 33695.84 0.774 • 5134.4 18075.55 31879.62 0.732 • 5134.3 17913.45 30080.17 0.691 • 5134.2 17751.28 28296.93 0.65 5134.1 17589.89 26529.87 0.609 • 5134 17429.22 24778.92 0.569 • 5133.9 17269.25 23043.99 0.529 • 5133.8 17103.3 21325.37 0.49 • 5133.7 16903.23 19625.04 0.451 • 5133.6 16663.14 17946.72 0.412 • 5133.5 16384.22 16294.35 0.374 • 5133.4 16056.63 14672.31 0.337 5133.3 15630.25 13087.97 0.3 c- 1.4/0 G • 5133.2 15096.02 11551.65 0.265 „i6- _ 6735. 1,, • 5133.1 14460.05 10073.85 0.231 • 5133 13723.03 8664.7 0.199 • 5132.9 12883.57 7334.37 0.168 • 5132.8 11943.56 6093.01 0.14 • 5132.7 10898.33 4950.91 0.114 5132.6 9736.11 3919.19 0.09 • 5132.5 8474.21 3008.68 0.069 5132.4 7113.93 2229.27 0.051 • 5132.3 5710.41 1588.05 0.036 • 5132.2 4420.38 1081.51 0.025 • 5132.1 3292.19 695.88 0.016 • 5132 2329.46 414.8 0.01 • 5131.9 1532.2 221.72 0.005 • 5131.8 898.85 100.17 0.002 • 5131.7 429.25 33.76 0.001 5131.6 122.99 6.15 0 5131.5 0 0 0 R:\5264_001\documents\Drainage\Pond Volume.xls • • • • • • • • • Water Quality Capture Volume • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • r • ItTETRA TECH • Professional Engineers • Client: 'CV /`a Ft 804, / /� sh`-ag��e Job No.: S0._5 OO 2C4. (. `Sh4et of Description: M 4 of u` /'y ear 4 re Vo/1 n,e Designed By: P. ,q . Date: ° / oS/oq Checked By: Date: S ®eve4 el Si /e �m9er'ft/OusheSS = J-7 fo %ia1 S, -A Leg 7. 91< • 100 eve%a/zz� = 0, 622 • 3 • wacv = 0. 4 , /9IZ d0 /781 3 • Z f WG?C (/ •= 0.4/ • (o.s6o2 ) - 114 � (O. s-602 ta. ca o. s60z = 0. 2z , • w e ` r v / O 22 • �7 his > '9 �/ • V 11_ /7reU 2 ' /z z O. c .771 • WO W$E = 5/. 33 - 2 9 • • : Donal eoto / m• • (� a = 0. 0095 // + o.//79 # + 0. 0882,- 6 -327 • Z _ • c - ' o .00r? N - 0 . 0068 f/ r too /S = O JSy n ("6- __ (O . 70 e 229J • �e' 7u �e� �rea , • Q u = ) `d 0. 329 0. 698 • • • .... from r!yore o/ �I Dra/naje Cirri s //7c; nu4 d /ro/ c/rc�/ • 6A'7 P D&Ads ( Vs) use Idiom o/ x%% • pefAra hobis / �/6 o/ctrn e Kr. () = b. 438 / C ID . STRUCTURAL BEST MANAGEMENT PRACTICES DRAINAGE CRITERIA MANUAL (V. 3) _. -- LiEquation for40 hour drain time t I Ill 5 �,, [ EURV A J 1 I b x -' 6 = 0.0095 H2 + 0.1179 H + 0.0885 L Et' o c -0.0018 H 0.0068 H + 1.0015. • 1 I m Jf CJ �� rI i I i ii re .5 i ' cr ile i �' j O 0 0 .1 - L. L J . .1 .5 1 5 10 30 Required Area per Row, A (square inches) le Figure EDB-3—Water Quality Outlet Sizing: Extended Detention Basin (Dry) With 40-hour Drain Time for Capture Volume (Equation on this figure valid only for WQCV Depth H < 6 feet) le II III II II III III S-74 (June rev.)2007-01 Urban Drainage and Flood Control District S • DRAINAGE CRITERIA MANUAL (V. 3) STRUCTURAL BMP DETAILS II • Orifico Picks Perforation Sizing • Circular r2erforation *zing IllChart may be app'ied to orifice pate or vertical Moo outlet. • Hoie Dia Hole Dia I Mn.i sc I A•eo Per Row (sq -n) (Ir) . (n) Na) i n=i n=7 n=3 5/16 0.313 I 0.06 0.15 0.23 • _ 3/8 0.3/5 ' 0.11 0.22 0.33 7/16 0.438 ! 0.15 0.50 0.45 1 II 1/2 0.500 0.20 039 0S9� 9/16 0 S53 0.25 0.50 0 75 • 5/8 0 625 I0.31 0.61 0.92 11/16 0.688 0.37 0.74I11 5/4 0.J50 0.44 ' 0.88 1.35 Ill 13/15_,. 0.913 � 0.52 1.04 1.56 7/8 0.8/5 060 1.20 1.80 II15/16 0.938 0.69 1.38 2.07 j _ 1.000 I} a 79 1.57 2.36 II1 1/16 1063 OB9 1.77 266 1/8 t I21s i 0.99 1.99 298 Ill 3/16 188 -jt 1.11 2.22 332_ t/4 :.250 1.23 2.453.68ID �I 5/16 '.313 _ 1.35 27I 4.06 3/8 1.3 J5 1.48 2._9) 4.45 116 1 438_ I 1.62 3 25 4 87 I 1 1/2 1.500 1.77 i 353 — 5.30 1 9/16 1565 1.92 3.83 5.75_J I1 5/8 _1_.625 2.07 4.15 6.22 16 \11/ 588 2.24 2.47 5.71 13/4 1750 241 4.81 7.22 :3/16 813 258 5,16 7 of II 7/8 1.875 7 5 551 8.28 15/16 938 2.95 5.90__ 884 Ill _. 2 2007, 3.14 _ I 6.28 9_a2 Number I columns of perforations IMinimurn steel plate thickness _/4 - 5/16 3/8 L__. - 1, III • Designer may kler palate :o the nearest 32nd inch .o better snatch the required erne, if desired II II Rectangular Perforation Sizing IllReciceg„ Cr .Min. Steel Only one column of rectangular perforations allowed. Hole Width Thickness IIIRector/juice Height = 2 inches 5" 1/4 " IIRequired Area per Row (sq in) 5 1 '4 l Rec tertgolcr Width (inches) - 2„ — - 5232 8" 5/16 II 11/32 .. 0.. 3/8 " ID , /2 . - - II Urban Drainage and Fiqu-c 5 Flood Control District WOCV Otiet Orifice II D•aincge Criteria Manua; (V_3) Perforation Sitng II Figure 5—WQCV Outlets Orifice Perforation Sizing. II p ' Rev. 10-2005 SD-7 Urban Drainage and Flood Control District • • N• gir J F . W W 0 . O Z O¢H F . I 3 g (a W 0 d . O V V in W vi Y Z K 4 U i Z N W Ci re) 0.03 r N Q • FD : 0 0 O< } O II M in NOD ~ON 00 0 • < N 0 N Q U p w O_I W • I z a W IX II 0 . aw0 Ug ' 0 a°, v� CDt�vlU � M I— w ��, rn I— D jj Q . . , d _J . (n Q . I- - • ` 0 W J Li__ • CC 0 w• CD O D. M M v) �' n w o I-- _J (-) U • ILI w 0 LIT Wg Ka O id O a 3 II ° o i- 3d4 f F- • 0 O 3 > 0 O ~ > o F- 3 0 N 0 . N MII W- in 0 a N 0 m Z a W O w w 0 m d W • o ^' CY D o o I- Z 5 U 3 Q O . O QCC Z lewa��aws up 11a11a WI Li . 0 F-- LA �` W w �o 0 . O U o U F § Iw cc U 0 z , O CO Q __J m Q o in 0 Ug 3a . w U O 0 K 0 • • • • • • • • • Detention Pond Sizing • • • • • • • • • • • • • s • • • • • D • ID D ID D ID D I I e i D D • 0 MAJOR DETENTION VOLUME BY FAA&MODIFIED FAA METHOD (See USDCM Volumes Runoff Chapter for description of method) • Project:RV and Boat Storage . Basin ID' Detention Pond Cekdlations:. : . . (For catchments less than 160 acres only. For larger catchments,use hydrograph routing method) . (Note:for catchments larger than 90 acres,CUNP hydrograph and routing are recommended) . The user must fill in all of the blue cells for these sheets to function. Design Information(Input): . Catchment Drainage Imperviousness I.= 5602 : :percent Catchment Drainage Area A=.-::.129140 Sacres . Predevelopment NAGS Soil Group Type C A.B.G.or D Return Periodfor Detention Control T a 100 years(2 5,10.25.50.or 100) . Time of Concentration of Watershed To 19 mamas Allowable Unit Release Rate(Sae Table A) q a 015 cislacre One-hour Preciptaton P,_ 2.67 ircbx Deal9n Rainfall IDF Formula 1=CI'P11(C2.Tc)AC3 II Coefficient One C,_.. ;2950; coefficient Two Cs= 1000 Coefficient Thee Cr=- '0.79 • Determination of Average Outflow from the Basin(Calculated): • Runoff Coefficient C a 0 67 . Inflow Peak Runoff Op m '4381 ':cis Allowable Peak Outflow Rate Op out= 209 :cfs . Ratio of Op'ouvOp-in Rato=:: 005 5 - Determination of MAJOR Detention Volume Using FAA&Modified FAA Method ' 20 <-Enter Rants Duration incremental increase Vedas Here(a g.5 for 5-Mimnes) Rental Rainfall Inflow Average Outflow Storage Adrstnent Average (hallow Storage . Duration Intersiry Volume Outflow Volute Volume Factor Outflow Volume Vonore m,wtes inches/hr ask tees (FM,cis) (FM.d) (FM d) (Modfied) (Mod cls) (Mod d) (Mod ci) ' Brow (o;PPO) (oumm) lou9,al (elm) @,4'u) icoPua) (auroul Iou@w (oumm) o 000 4 000 0 a 0 000 000 5 0 ' 20 518 49781 f 108 .1301 48480 0 95 1:99 2,383 41398 40 346 66402 108 .:2602 . .63900 ..:073 .1,52 3,697 62;6655 ' 60 265 76469 105 :3903 72.565 0.85 1.36 4691 71578 80 216 s: 43,596 108 `5204 -78394 0:4t 128 .. .6,145 71,454 100 1.86 1 82,178 108 6505 F 82673 059 1;23 8399 81/50 5 120 163 I 96763 1 08 ::1806 65 971 O58 120 8,653 55131 140 145 : 97,71E 108 :9107 88611 0:56 1.18 9907 81:812 ' /W 132 101164 104 ;10,408 90156 056 1:16 11,161 90003 180 : 121 104236 : 108 '91709 -_.92,527 '055 1.:15 12,415 91,821. ' 200 111 107013 `. 108 13,010 :94003 055 1:14 13,669 93344 220 104 -': 109551 : 108 '}4311 :!95240 --054 Tf13 04.923 -94.629- ' 240 _. 097 ? 111892 )I 108 45612 96260 051 17.12 16,177 95115: 260 091 114,066 108 .:499(3 97153 40-53 1:12 17431 96635. ' 260 086 116,018 108 ..10,214 !:91893 053 1:11 15685 91413'. 300 082 : 118006 108 19,515 :98 491 043 191 1999"9 98.068: II 340 078 : 119,807 108 20816 98991 053 110 21,193 98615 340 074 121,504 108 ;22117 99,W6 053 1:10 22447 99067: a6o 071 123,135 ! 108 23,416 199717 051 1:10 23701 99435 IP360 068 124682 : 1.08 24,719 99962 052 1.09 24955 99727' 400 066 126460 1,06 26021 100139 0.52 1;09 26,209 99951 5 420 063 127,576 108 27.322 100294 052 1109 27463 100113 440 061 126,936 1 D$ 26623 .:,.100,314 052 z 1:09 23717 106220 ' 460 059 130.245 108 29,924 100321 052 109 29971 100274 480 057 131506 F 108 1:31226 100,282 052 1.08 .:31,225 .100282 ' 500 0 55 132,724 '. 1 08 :)32526 :100,198 052 109 .32,479 100,245 520 054 •! 139901 108 :93,827 :100075 052 ..1:08 —33733 1100t69 ' 540 092 135041 1.08 a5i25 99914 052 1,06 :34957 100,055 560 051 136144 - 106 36,429 997(8 052 1:08. 36241 99905: 580 049 137219 108 :37730 :99469 0.52 1.00 37,495 99,725: 5 s00 048 138261 - 108 (39,031 99,230 082 9'08 38,749 49513'. 620 047 139275 108 '.40,3332 ;98943 051 409 :40003 99272. 5 640 046 140261 105 41633 98529 051 1:07 -41257 99005 660 045 141,223 108 42.934 98289 0:51 1:07 42511 99,712 ' 680 044 142160 ( 108 44,235 91925 051 1:07 43,755 98,396 T00 043 143075 106 ..45536 F 97539 051 107 : 45,019 98.056. ' 720 042 : 143968 108 46.837 97131 : 051 1.07 :46273 9789E FAA Major Storage Volume(cubic 8)= 100,121 Mod.FAA Major Storage Volume(cubic ft)- 100,282 ' FAA Major Storage Volume(acre-n.)=::.:.222037. Mod FAA Major Storage Volume(acre-n.) 2.3021:'. UDECD DETENTION VOLUME ESTIMATING WORKBOOK Version 2.02.Released January 2007 ' Detention PondSlang v5.Modlied FAA 10/62007 1040 I II Ill . MAJOR DETENTION VOLUME BY FAA&MODIFIED FAA.METHOD (See USDCM Volume I Runoff Chapter for description of method) • Project RV.and Boat Storage . Basin ID: Detenfion'Pond Calculations Inflow and Outflow Volumes vs. Rainfall Duration IDIntersection of Modified and FAA Outflow Plots Is at maximum detention volume III 160,000 - II ID . 140.000 __ :_.. _ ___._.—_ tiEt II __.. E I ID .... I 120,000 € ___ ID I _ . .. ._. { III 100,000 II----II -LI a a 80,000 -... _. 0 III i 60,000 E -II II II 40,000 t -- -- ill ID • 20.000 ID f I II D i IIII 0 100 200 300 400 500 600 700 800 Duration(Minutes) II ID ^M-Inflow Volume -t-Modified Outflow Volume --e-FAA Outflow Volume IIII UDFCD DETENTION VOLUME ESTIMATING WORKBOOK Version 2.02,Released January 2007 IIII Detention Pond Song ids Modified FAA 10l&2007,10:40 a jPond Outlet Structure and Overflow Weir Sizing S 0 II S 0 0 0 0 0 0 II II S II S II II II II II 0 S S S II II II II II S II II II III . STAGE-DISCHARGE SIZING OF THE WEIRS AND ORIFICES(INLET CONTROL) Project: RV and Boat Storage Basin ID:Outlet Orifice Sizing II Di o. To . x o o /_\ O O O O O . O ClII Vertical 12Vertical . Sizing the Restrictor Plate for Circular Vertical Orifices or Pipes uncurl Orifice Orifice Water Surface Elevaton at Design Depth Bev:WS= 5,137.93 feet . PipeNerscal Orifice Entrance Invert Elevation Bev invert 5,131.50 feel Required Peak Flow through Orifice at Design Depth O= 209 ds PiPeNertical Orifice Diameter(inches) Dia= 18.00) ginches II Orifice Coefficient Ca=; ass . Full-flow Capacity(Calculated1 Full towarea N= 1.77 sq ft Ill Half Central Angle in Radians Theta= Of 3.14�rad Full-flow capacity . 22.0 cis ID Percent of Design Flow= 1051% Calculation of Orifice Flow Condition . Half Central Angle(OcThetac31416) Theta= 0. 9 had Flow area �= 0.16 sgft Tap width of Orifice finches) T,= 12.71 inches ID Height from Invert of Pipe to Bottom of Plate(inches) Y,= 263 'inches ID Resultant of Bottom of Plate Bev Rate Bottom Edge= 5131.72 feet Resultant Peak Flow Through Orifice at Design Depth Q= 21 cis II . 100-YR or Larger Flood Detention Overtopping Overflow with Trash Rock Pratecllon 1 ���i �d ea{w'+ Emmgenry Secede 2- to 10 Yes Detention fw Lavgr flfl ode r ti eat pweee . Overflow with Trash Racy warffil fveaar MO-YR w Larger flood Water Surface ra ' b Ill 2- to 10 YR Wets Surface _d CJrn Cent WOCY Water Surface ••••^ f-rhea ed Grade II • R Swlaceent Water ' Restrict Plata www owls . Red p —— ,' Outlet Pipe=1202 or Design Capacity D i.e IIOrifice Plate W+rw iw ID IP Ill ID ID . Detention Para Sizing.its,Outlet 10/8/2007,1052 • TETRATECH • Professional Engineers • Client: /4 V 0 8041 disrP_QC' Job No.: eo 000/. CO Sheet of • Description: nerf rw (JewEte/ryd Designed By: P.A- Date: oc/ e/oq • Checked By: Date: • en (mergenu Over/%ow 4 ei r- • Pond /co (/;5 WS = 373993 Oct" I LrneyeneU 510,# We,r @ s73g•00 Cr yen &)e;r- Der f/ ,s o:s/'/ (4cprim 7 (fr/c „ • _ cJ1 ,rm �real nay e SIB hc/c ra'S) 11 heir e.,Qsfa" : Q = L IP /0 g s cis C ' 3. 1 c- Conversion Ac or t . 5 • Cmergencg Over//ca We,r n lrlin,gm CJ,d!!7 is 40. v /1 p p p II p ID Appendix E s p p • • a Culvert, Ditch and Riprap Sizing Calculations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • S Ill Culvert Calculator Report . Culvert 1 • Solve For:Headwater Elevation Culvert Summary . Allowable HW Elevation 5,144.70 ft Headwater Depth/Height 1.36 . Computed Headwater Elevr 5,144.65 ft Discharge 20.53 cts . Inlet Control HW Elev. 5,144.65 ft Tailwater Elevation 5,140.87 ft Outlet Control HW Elev. 5,144.61 ft Control Type Inlet Control II Grades Upstream Invert 5,141.93 ft Downstream Invert 5,141.52 ft . Length 39.51 ft Constructed Slope 0.010377 ft/ft . Hydraulic Profile . Profile S2 Depth, Downstream 1.49 ft . Slope Type Steep Normal Depth 1.47 ft Flow Regime Supercritical Critical Depth 1.63 ft . Velocity Downstream 8.19 ft/s Critical Slope 0.008365 ft/ft . Section . Section Shape Circular Mannings Coefficient 0.013 Section Material Concrete Span 2.00 ft . Section Size 24 inch Rise 2.00 ft . Number Sections 1 • Outlet Control Properties . Outlet Control HW Elev. 5,144.61 ft Upstream Velocity Head 0.88 ft . Ke 0.20 Entrance Loss 0.18 ft . Inlet Control Properties . Inlet Control HW Elev. 5,144.65 ft Flow Control Submerged Inlet Type Groove end w/headwall Area Full 3.1 ft2 . K 0.00180 HDS 5 Chart 1 • M 2.00000 HDS 5 Scale 2 C 0.02920 Equation Form 1 . Y 0.74000 • • • . Project Engineer:karlie.jackl r:\5264_001\documents\drainage\culvert sizing.cvm Tetra Tech CulvertMaster v3.1 103.01.003.00) I. 10/23/07 09:36:42 ©Bentley Systems. Inc. Haestad Methods Solution Center Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 0 S Culvert Calculator Report • Culvert 2 ID Solve For:Headwater Elevation • • Culvert Summary • Allowable HW Elevation 5,138.00 ft Headwater Depth/Height 1.96 Computed Headwater Elev: 5,134.44 ft Discharge 2.09 cfs • Inlet Control HW Elev. 5,134.40 ft Tailwater Elevation 5,134.40 ft Outlet Control HW Elev. 5,134.44 ft Control Type Outlet Control • • Grades Upstream Invert 5,131.50 ft Downstream Invert 5,131.30 ft • Length 39.42 ft Constructed Slope 0.004997 ft/ft • • Hydraulic Profile • Profile PressureProfile Depth,Downstream 3.10 ft • Slope Type N/A Normal Depth 0.54 ft Flow Regime N/A Critical Depth 0.55 ft • Velocity Downstream 1.18 fUs Critical Slope 0.004956 ft/ft • Section • Section Shape Circular Mannings Coefficient 0.013 • Section Material Concrete Span 1.50 ft Section Size 18 inch Rise 1.50 ft • Number Sections 1 • Outlet Control Properties • Outlet Control HW Elev. 5,134_44 ft Upstream Velocity Head 0.02 ft • Ke 0.20 Entrance Loss 0.00 ft I • Inlet Control Properties • Inlet Control HW Elev. 5,134.40 ft Flow Control Unsubmerged • Inlet Type Beveled ring,33.72 bevels Area Full 1.8 ft' K 0.00180 HDS 5 Chart 3 • M 2.50000 HDS 5 Scale B C 0.02430 Equation Form 1 • Y 0.83000 • I • • • I • • Project Engineer:karlie jackl • r:\5264_001\documents\projectl.cvm Tetra Tech RMC Inc.LONGMONT CulvertMaster v3.1 [03.01.009.00] 10/08/07 04:02:4f€lTEntley Systems, Inc. Haestad Methods Solution Center Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 • 0 Culvert Calculator Report II Culvert 3 ' Solve For. Headwater Elevation . Culvert Summary Allowable HW Elevation 5,136.63 ft Headwater Depth/Height 1.55 . Computed Headwater Elevr 5,134.40 ft Discharge 22.62 cfs • Inlet Control HW Elev. 5,134.29 ft Tailwater Elevation 5,132.08 ft . Outlet Control HW Elev. 5,134.40 ft Control Type Outlet Control • Grades Upstream Invert 5,131.30 ft Downstream Invert 5,131.03 ft . Length 55.35 ft Constructed Slope 0.004878 fUft • Hydraulic Profile • Profile CompositeM2PressureProfile Depth,Downstream 1.69 ft • Slope Type Mild Normal Depth N/A ft Flow Regime Subcritical Critical Depth 1.69 ft • Velocity Downstream 7.97 ft/s Critical Slope 0.009460 ft/ft • Section • Section Shape Circular Mannings Coefficient 0.013 • Section Material Concrete Span 2.00 ft Section Size 24 inch Rise 2.00 ft • Number Sections 1 Outlet Control Properties Outlet Control HW Elev. 5,134.40 ft Upstream Velocity Head 0.81 ft • Ke 0.20 Entrance Loss 0.16 ft • • Inlet Control Properties • Inlet Control NW Elev. 5,134.29 ft Flow Control Submerged • Inlet Type Groove end w/headwall Area Full 3.1 ft' K 0.00180 HDS 5 Chart 1 • M 2.00000 HDS 5 Scale 2 C 0.02920 Equation Form 1 • Y 0.74000 • • • • • • • • • Project Engineer:karliejackl • r:\5264_001\documents\projects.cvm Tetra Tech RMC Inc,LONGMONT CulvertMaster v3.1 103.01.009.00] 10/08/07 04:03:010slifitntley Systems, Inc. Haestad Methods Solution Center Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 • 0 O Culvert Calculator Report Culvert 4 • ' Solve For:Headwater Elevation . Culvert Summary . Allowable HW Elevation 5,134.80 ft Headwater Depth/Height 0.31 Computed Headwater Elev; 5,134.17 ft Discharge 0.26 cfs . Inlet Control HW Elev. 5,134.16 ft Tailwater Elevation 5,134.16 ft . Outlet Control HW Elev. 5.134.17 ft Control Type Outlet Control • . Grades Upstream Invert 5,133.70 ft Downstream Invert 5,133.08 ft . Length 35.74 ft Constructed Slope 0.017348 ft/ft • • Hydraulic Profile • Profile M1 Depth, Downstream 1.08 ft • Slope Type Mild Normal Depth 0.19 ft Flow Regime Subcritical Critical Depth 0.19 ft • Velocity Downstream 0.19 ft/s Critical Slope 0.018680 fUft • • Section • Section Shape Circular Mannings Coefficient 0.024 • Section Material CMP Span 1.50 ft Section Size 18 inch Rise 1.50 ft • Number Sections 1 • Outlet Control Properties • Outlet Control HW Elev. 5,134.17 ft Upstream Velocity Head 0.00 ft • Ke 0.20 Entrance Loss 0.00 ft • • Inlet Control Properties • Inlet Control HW Elev. 5,134.16 ft Flow Control Unsubmerged • Inlet Tcdpereled ring, 33.7'(1.5:1)bevels Area Full 1.8 ft' K 0.00180 HDS 5 Chart 3 • M 2.50000 HDS 5 Scale B C 0.02430 Equation Form 1 • Y 0.83000 • • • • • • I • • Project Engineer:karlie.jackl • r:\5264_001\documents\project1.cvm Tetra Tech RMC Inc,LONGMONT CulvertMaster v3.1 [03.01_009.00] 10/08/07 04:06:1OBtntley Systems,Inc. Haestad Methods Solution Center Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 • I I I II O Worksheet for Outfall Channel ID Project Dent -, ti 4.4,;„774 . Friction Method Manning Formula . Solve For Normal Depth . tnputPat? ., _. ` ' r ..__. x x.5 . t _t - . Roughness Coefficient 0.013 • Channel Slope 0.00500 ft/ft Left Side Slope 25.00 . Right Side Slope 25.00 . Discharge 24.67 ft3/s ReSUttS 'E _._. .wL . . y r --2-44,,,:. �-:� s���.�'..#P,�.°��. vtuTa.a,: `" • Normal Depth 1.08 ft • Flow Area 4.69 ft2 . Wetted Perimeter 8.93 ft . Top Width 8.66 ft • Critical Depth 1.19 ft Critical Slope 0.00305 ft/ft • Velocity 5.26 ft/s . Velocity Head 0.43 ft • Specific Energy 1.51 ft • Froude Number 1.26 • Flow Type Supercritical • Gvf lnpuf Data Q __ ty, ,.;.4. a.— :-...T..: a " - • Downstream Depth 0.00 ft • Length 0.00 ft Number Of Steps 0 • • GVFOutput. s{^�£ "� - "I-_ n -04a z. • Upstream Depth 0.00 ft • Profile Description Profile Headloss 0.00 ft . Downstream Velocity Infinity ft/s • Upstream Velocity Infinity ft/s • Normal Depth 1.08 ft • Critical Depth 1.19 ft Channel Slope 0.00500 Mt • Critical Slope 0.00305 ftft • • Bentley Systems,Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.066.00] • 10/8/2007 17:26:22 27 Siemons Company Drive Suite 200 W Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 • • • 0 I. II Worksheet for WCR 6 South Ditch • Project Description a , . Friction Method Manning Formula • Solve For Normal Depth II Input Data ,` `t' r ,. ; . Roughness Coefficient 0.035 . Channel Slope 0.00500 ft/ft . Left Side Slope 25.00 % Right Side Slope 25.00 % • Bottom Width 17.00 ft . Discharge 20.53 ft3/s • ResUtts '',-' ' S, .a.41, 1' • +• Tx 'a.-'v- . • Normal Depth 0.56 ft • Flow Area 10.85 ft' . Wetted Perimeter 21.65 ft . Top Width 21.51 ft . Critical Depth 0.35 ft Critical Slope 0.02618 ft/ft • Velocity 1.89 ft/s 5 Velocity Head 0.06 ft . Specific Energy 0.62 ft . Froude Number 0.47 . Flow Type Subcnhcal x . GVFinputData -,,-,,c. s_ `` '"'` `. 5 Downstream Depth 0.00 ft • Length 0.00 ft Number Of Steps 0 GVF Output Data i , . _-.4:,,,i, ' ' _ _ 41; ,. ,, '> 5 Upstream Depth 0.00 ft . Profile Description Profile Headless 0.00 ft • Downstream Velocity Infinity ft/s . Upstream Velocity Infinity ft/s 5 Normal Depth 0.56 ft 5 Critical Depth 0.35 ft II Channel Slope 0.00500 ft/ft Critical Slope 0.02618 ft/ft • Bentley Systems,Inc. Haestad Methods Solution Center Bentley FlowMaster 108.01.066.00] 5 10/8/2007 17:26:44 27 Siemons Company Drive Suite 200 W Watertown,CT 06795 USA +1-203-755-1666 Page 1 of 1 • • • 0 wrib TETRA TECH • Professional Engineers • • Client: eVic' ✓J7nt Sz ti Job No.: SG-Sa/v 4K 0G/. C6 Sheet of / • Description: Apra ' 7x/ i A ns Designed By: </1// Date: ,9cf $ /jcyJ7 • 7:inter/, / Checked By: Date: 111 . a/y = /37 f D 07,a = v0 ea a/5 111 V = 767 /t/, o = i 57/.moo = O. 6Bs w,.s - o %s = 7 aG 1'▪ -rem 77fin ItQ ryte L ":20/- 0 /0.2s = C.5/".as _ 3 b3 ▪ 774,r-ri Ap«re -41) - — 1/417? /an 9) = G, 7 = 63/7. 5/ _ 73f • G = G- 7(2. 73/7 a7 - J = - DG5 �. 0 • •T/o-n-94---8`O✓B - a`.5-# K., 'ir �y/17B ./Y/ K/7/;4 a do-7766- cA /7 rnc,4cs /and/ a ✓/ty/ti e,/ `72 %o leef. 0 O • TETRATECH • Professional Engineers • Client: A:71 - Y San/ ( Job No.: 8D eV/.GD Sheet of • Description. �>rnp t /t'A 6i.--:cS Designed By: 2t47 Date: /,i_/. • ! Ci��erl� .3 Checked By: Date: / ✓r5 • • Q - 6a • ✓ = 7. 97 _#/s• _ /. 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S �:5 = a.a-7v • • Es-vm `� eO - a� - V(� slang) = (v. 7 • • = O G/a4/9 - / 37 ff • G = 6, 70 87/a. 31 - , 5) - /7, 56 71- • • • i AertrAre 774re an, minima/ /hn-s ,src/Ee/ /4o,7/ /X is as/v�rl. • C/se Orr ✓/Pe iY/ At.-//h a aa, /er . o/ %7 AncA s• • 6 /am a/ 48 e /c.4. • • • • • • • • • 1 J It TETRA TECH • Professional Engineers • Client: /A-I n.2.2/, lay Si Job No.: rti-C°64/.DD/ CO Sheet of • Description: r..-y' jf-i7-4/s/lirns r Designed By: ,e/!4 Date: 2 z' 9/Jo07 • WC2 G s-c„,2/r /pair/ Checked By: Date: //G�CS n (from Tas6 _,�n!(1 ; �rae a 61-74,7-1a-,J12, i' •• S = OG✓lSr` 4 • CS s a. 6- • • Jp �' • • /. An S-3,1 ry�vO rAe f-47.4_a e/amte/t'r dA /�inc/ies • . :. LARGE MAPS IN ORIGINAL FILE NOT SCANNED Page 1 of 1 • • Michelle Martin From: Michelle Martin Sent: Thursday, November 01, 2007 10:27 AM To: 'deymann@comcast.net' Cc: dp.lee@comcast.net Subject: RE: Sign Clarification Don, I have reviewed the paper plat you submitted on 10/26/07 and a red line copy is ready to be picked up in the SW office. Let me know if you have any questions. S Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720) 652-4211 From: deymann@comcast.net [mailto:deymann@comcast.net] Sent: Tuesday, October 23, 2007 9:27 AM To: Michelle Martin Cc: dp.lee@comcast.net Subject: Sign Clarification Michelle, After our discussion yesterday I went to check the codes on the sign. Signs are covered in "Division 2 — Signs" in section 23-4-120D. Section 23-4-120D says the setback for all other freestanding signs is lft for every 3ft of sign height after the current right-of-way and future right-of-way. Since our sign is 6ft tall and more than 2ft away from the future right-of-way its current location is compliant. Isn't the section you pointed to, Section 23-3-50B, for building setbacks not sign setbacks? Are you going to use the sign codes (23-4-120D) or the building codes (23-3-50B) for the sign so that we can complete the plat? Thanks, Don 11/01/2007 Weld County Planning Uepartm • GREELEY OFFICE NOV 0 1 2007 ha- MEMORANDUM RECEIVE® ' TO: Michelle Martin, Planning Services DATE: 10/30/2007 CFROM: Donald Carroll, Engineering Administrator oe COLORADO• SUBJECT: USR-1607, Henry Johnston, do Donald Eymann I met with the applicant and went over the Public Works portion of the Improvements Agreement for on-site. As a part of the conditions prior to recording the plat, Item No. 1A4, 5, 6, 12, 1B and 1K were the items identified in the conditions. All items were shown on the plat drawing. The Improvements Agreement According to Policies Regarding Collateral for Improvements (on-site) were discussed with Exhibits A and B to be provided to Planning Services and then routed to Public Works for review prior to scheduling. Development Standards No. 20, the applicant has submitted the final drainage study. I will forward this to Brian Varrella in our drainage division for review. pc: USR-1607 M:\PLANNING-DEVELOPMENT REVIEW\USR-Use by Special Review\USR-1607-A.DOC Weld County Planning Department GREELEY OFFICE MEMORANDUM p OCT 10A 2,/00Oc7^ TO: Michelle Martin,Planning Services tEiDr-2007 ' CC: Donald Carroll, Public Works Department O FROM: . Varrella, P.E., Public Works Department Ci COLORADO SUBJECT: Early grading permit request for USR-1607, Recreational Storage Solutions, at WCR 6 Weld County Public Works Department has reviewed this early site grading permit request for this Use by Special Review. Comments made during this phase of the review process are not all-inclusive, as other concerns or issues will arise during the remaining USR process. Early Grading Requirements ❑ These drainage plan comments apply to the Stormwater Management Plan for Recreational Storage Solutions prepared by Tetra Tech Inc.,dated October 1, 2007. The SWMP is supported by a Site Grading Plan, Sheet 1 of 1, and a letter of intent from the Applicant,Don Eymann, both dated October 1, 2007. Neither the SWMP or Grading Plan have been stamped, sealed,or signed by a professional engineer licensed to practice in the State of Colorado. All documents were received by Public Works on October 8, 2007. ❑ The SWMP includes a copy of the Colorado Department of Public Health and Environment(CDPHE)permit for the construction site. This document is blank,and will need to be completed before Final Plat of USR-1607. ❑ The site is located south of WCR 6 between WCR 11 and 13. Requirements: ❑ All activities (grading, utility installation, excavation, demolition, and others) shall comply with the surface water quality regulations and requirements of the Clean Water Act(CWA)enforced by the CDPHE,Water Quality Control Division. ❑ The construction area is less than 1 mile from Little Dry Creek, and vigilance in stormwater management is the responsibility of the applicant. ❑ Any disturbed earth at the construction site must be graded according to the approved plans or to pre-existing project conditions, and re-vegetated with an approved Weld County seed mix. ❑ The letter from the Applicant, dated October 1,2007, agrees to the following terms and conditions of this early grading permit: 1. All early grading shall be performed at [the Applicant's] own risk. 2. Any and all final design changes discovered during the USR process shall require on-the-ground modifications to the site. 3. The on-site detention pond must be excavated immediately,prior to overlot grading, for water quality purposes. 4. [The Applicant] agree[s] to meet all applicable County Codes during the [remaining] USR application process. Recommendation The applicant has requested a grading permit from Weld County for construction activities on their proposed site at WCR 6 between WCR 11 and 13. The documentation submitted to Public Works and dated October 1,2007 is acceptable for an early grading permit ONLY for the Recreational Storage Solutions site(USR-1607). Weld County Public Works does not recommend releasing the applicant for any other work on the site until the Use by Special Review process is complete and approved by all referral agencies. Page 1 of 1 October 10,2007 M:\PLANNING—DEVELOPMENT REVIEW USR-Use by Special Review\USR-1607 RV storage\USR-1607 Early Grading Permit Rev#I doc Page 1 of 1 • • Michelle Martin From: Michelle Martin Sent: Thursday, October 11, 2007 12:55 PM To: 'deymann@comcast.net' Subject: RE: USR-1607 Plat Recording Timeline Hi Don, I have reviewed the paper plat and they are ready to be picked up in the SW office. There are some modifications that will need to be made to the plat and if you have any questions don't hesitate to ask. In addition to the modification to the plat the following condition still need to be addressed 1.B and 1.K. If you will not be able to meet your expected timeline of December 17, 2007 please contact the Weld County Department of Planning Services. dick& .Y4tiOw Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720) 652-4211 From: deymann@comcast.net [mailto:deymann@comcast.net] Sent: Thursday, October 11, 2007 9:04 AM To: Michelle Martin Cc: dp.lee@comcast.net Subject: USR-1607 Plat Recording Timeline Ms. Martin, In response to the attahced letter dated October 1, 2007 we request an extension to December 17, 2007 to record the plat. This date is contignet on release of a grading permit on or before Octber 12, 2007 and is driven by the improvements agreement. The plat, conditions of approval responses, and draft drainage reports are completed and awaiting comments from various county offices. We submitted written responses to the conditions of approval on September 4, 2006 and are awaiting final comments and approvals. We submitted two copies of our final plat on October 9, 2007 and are awaiting comments. Draft drainage report and storm water managment plans were submitted on Septermber 4, 2007. Since that time we have been working with Public Works to incorporate their recommendations. The final drainage report will be stamped and delivered to your office the week of October 22, 2007. Revisions to any of these documents will take a minimum of 10 business days once comments are received. Final completion of these items is dependent on when final comments are received. Per our discussion on September 18, 2007 the options presented to "per-pay" the improvements agreement represents a financially stressing condition on our business. As such we would like the option of completing the improvements on-site, having them inspected, and then recording the plat. If you have any questions about the timeline please do not hesitate to contact me. Thank you, Don Eymann 10/11/2007 Page 1 of 1 • • Michelle Martin From: Brian Varrella Sent: Wednesday, October 10, 2007 8:27 AM To: Michelle Martin; Donald Carroll Subject: Early grading permit info from PW for Rec. Storage Solutions, USR-1607 Attachments: USR-1607 Early Grading Permit Rev#1.pdf Michelle, Public Works has reviewed the SWMP and grading plan for Recreational Storage Solutions at WCR (USR-1607). Please see the attached memorandum — hard copy to follow. Brian Brian K. Varrella, P.E., CFM Weld County Public Works 1111 H Street Greeley, CO 80631 phone: 970-304-6496 fax: 970-304-6497 bvarrella@co.weld.co.us 10/10/2007 • Page 1 of 1 • Michelle Martin From: Charlotte Davis Sent: Tuesday, October 02, 2007 5:05 PM To: Michelle Martin Subject: USR-1607 Michelle, I am in receipt of the following doucments for USR-1607 Conditions Prior to Recording: 1F Vehicle Washing Design and Operation Plan 1G Vehicle Wash Water Recycler Operation Plan 1H RV Dump Station Designand Operation Plan 11 Waste Handling Plan These documents have reveiwed by Environmental Health Services and are approved. These conditons have been satisfied and can be removed. All health related conditions prior to recording have been addressed. See e-mail September 5, 2007 for condition 1 E. Best regards, Char Charlotte Davis, MPH Weld County Department of Public Health & Environment 1555 N. 17th Avenue Greeley, CO 80631 (970)304-6415 x2208 FAX (970) 304-6411 10/03/2007 USR-1607 R•^ ^^' Recreational Storage Solutions October 1,2007 g''b 5360 County Road 6 Erie,CO 80516 Dear Ms. Martin, Donald Eymann and David Lee,applicants for USR-1607 request early release of a grading permit. We understand that early grading activities are conditional on the following items: 1. All early grading shall be performed at our own risk. 2. Any and all final design changes discovered during the USR process shall require on-the-ground modifications to the site. 3. The on-site detention pond must be excavated immediately(prior to overlot grading)for water quality protection purposes. 4. We agree to meet all applicable County Codes during the USR application process. Included with this letter are three(3)copies of the grading plat and three(3)copies of the SWMP plan for review by Planning,Building Inspections,and Public Works. Please start the early release approval process with the attached information. Thank you, 9 Donald J. Eytiiann j • 4/)-- i.‘ 101111111111111111111111111111141111111111111111 3503323 09/11/2007 12:48P Weld County, CO 1 of 2 R 11.00 0 27.50 Steve Moreno Clerk&Recorder Donald Eymann I3`13T Afar atalc an ga:m8M co r3023 SPECIAL WARRANTY DEED • THIS DEED,Made on September 4,2007 between Henry Wallace Johnston K" of the County of Weld,State of Colorado,grantor(s),and Donald Eymann �� !!11 " whose legal address is 13')38 61a (rent Dude. Exccxrmele(1 CD 6,Da3 of the County of Weld,State of Colorado,grantee(s): WITNESSETH,That the grantor(s)for anit in consideration of the sum of Two Hundred Seventy Five Thousand and 00/100 DOLLARS($275,000.00)/the receipt and sufficiency of which are hereby acknowledged, have granted,bargained,sold and conveyed,and by these presents do grant,bargain,sell,convey and confirm, • unto the grantee(s),their heirs and assigns forever,ail the real property,together with improvements,if any, situate,lying and being in the•County of Weld State of Colorado,described as toll t. • SEE EXHIBITA ATTACHED HERETO ✓ 7,1-79-1�1 also known by street and number as: TBD WCR 6,Dacono.CO 80514 TOGETHER with all and singular the hereditaments and appurtenances thereto belonging,or in anywise appertaining,and the reversion and reversions,remainder and remainders,rents,issues and profits thereof;and all the estate,right,title,interest,claim and demand whatsoever of the grantor(s),either in law or equity,of,in and to the above bargained premises,with the hereditaments and appurtenances; TO HAVE AND TO HOLD the said premises above bargained and described with the appurtenances, unto the grantee(s),their heirs and assigns forever. And the grantor(s),for themselves,their heirs and personal representatives or successors,do covenant and agree that they shall and will WARRANT AND FOREVER • • DEFEND the above bargained premises in the quiet and peaceable possession of the grantee(s),their heirs and assigns,against all and every person or person claiming the whole or any part thereof,by,through or under the grantor(s)except for general taxes and assessments for the year 2007 and subsequent years;and subject to easements, - - covenants, reservations,restrictions and rights of way of record. Wherever used herein,the plural references shall be construed to be singular references and singular references shall be construed to be plural references where the context requires and all references of gender and person shall he construed to refer to the grantor or grantors identified herein regardless of the context. IN WITNESS WHEREOF,the grantor(s)have executed this deed on the date set forth above. Henry Wallace Johns STATE OF COLORADO COUNTY OF BOULDER_ ) SS. T foregoing instrument was acknowledged before me this t day of -Y1'1� My Henry Wallace Johnston ER .p M 14OSARp �,G_ Witness my hand and official seal. tMy commission expires PUBLICi / � �� t}vnt Notary Public T41-CO-06-000727 L:4.1+ - - ly Camtalalaf tpirta Meish L,x009 Name and Address of Person Creating Newly Created Legal Description(38-35-106.5,C.R.S.) No.16 Rev.12-97 Special warranty Deed S2ICOOTD.2e30 Rev.11/9/04 1111111111$!IIIII Halal HIE III 3503323 09/11/2007 12:48P Weld County,CO 2 of 2 9 11.00 D 27.50 Steve Moreno Clerk&Recorder EXHIBIT"A" A tract of land located in Section 25,Township 1 North, Range 68 West of the 6th P.M.,Weld County, Colorado,described as follows:Beginning at a point on the Westerly right of way of Bull Canal and on the North line of said Section 25 from which point the North quarter corner of said Section 25 bears North 89°48'East, 145.47 feet,thence South 89°48'West,780.87 feet along the North line of said Section 25 to the Easterly right of way of the Union Pacific Railroad;thence on a curve to the left along • the Easterly right of way of the Union Pacific Railroad on an arc length of 740.05 feet and a central angle of 11°19'30"to a point of tangent;thence South 23°50'East,369.98 feet to the Northerly right of way of the Bull Canal;thence along said Northerly right of way by the following courses and distances: North 65"03'East 313.67 feet to a point of curvature;thence on the arc of said curve to the left 199.56 feet,said curve having a radius of 188.06 feet and a central angle of 60°48'to its point of tangency; . thence North 4°15'East,297.66 feet to a point of curvature;thence on the arc of a curve to the left 91.00 feet,said curve having a radius of 280.33 feet and a central angle Of 18°36'to a point of reversed curve; thence on the arc of said curve to the right 102.62 feet,said curve having a radius of 945,75 feet and a central angle of 6°13'to its point of tangency;thence North 08°08'West,43.88 feet to a point of curvature;thence along the arc of said curve to the right 82.93 feet,said curve having a radius of 685.30 feet and a central angle of 6°56'to its point of tangency;thence North 1°12'West,54.61 feet to a point of curvature;thence on the arc of said curve to the right 61.66 feet,said curve having a radius of 120.86 feet and a central angle of 29°14'to its point of tangency;thence North 28°02'East,30.11 feet to the Point of Beginning. • • No.16 Rev.12-97 Special Warranty Deed 521COOTD.2630 Rev.11/9/04 Bj 1111111111111111111111111111 11111111111111111111 3503322 09/11/2007 12:48P Weld County,CO 1 of 2 R 11.00 D 0.00 Steve Moreno Clerk&Recorder PERSONAL REPRESENTATIVES DEED 3133 Cp02k£nuC — (Testate Estate) J --)cn & ,Rvetcd, Cb Eth93 THIS DEED is made by Henry W. Johnston as Personal Representative of the Estate of Ruth.Irene Johnston,✓deceased, Grantor, whose legal address is 4015 Weld • County Road 13, Dacono, CO, 80514, to Donald Eymann, Grantee, whose legal address is 13738 Star Creek Drive, Broomfield, CO, 80020. WHEREAS, the Last Will and Testament of the above-named decedent was made and duly executed in the lifetime of the decedent and is dated September 21, • 2005,which Will was duly admitted to informal probate on March 8, 2006, by the District Court in and for the County of Weld, State of Colorado, Probate No.O7 PR 106; WHEREAS, Grantor was duly appointed as Personal Representative of said Estate on March 8,2007, and is now qualified and acting in said capacity. NOW THEREFORE, pursuant to the powers conferred upon Grantor by the Colorado Probate Code, Grantor does hereby sell, convey, assign, transfer and set over unto said Grantee, for and in consideration of the sum of TWO HUNDRED SEVENTY FIVE THOUSAND AND NO/100 DOLLARS ($275,000.00)4he following described real property situate in the County of Weld, State of Colorado: 1. An undivided one-third interest in: A tract of land located in Section 25,Township 1 North,Range 68 West of the 6h - • - P.M., Weld County,Colorado,described as follows:Beginning at a point on the Westerly right-of-way of Bull Canal and on the North line of said Section 25 from which • point the North quarter corner of said Section 25 bears North 89°48'East, 145.47 feet; thence South. 89°48'West,780.87 feet along the North line of said Section 25 to the . Easterly right of way of the Union Pacific Railroad;thence on a curve to the left along .� the Easterly right of way of the Union Pacific Railroad on an arc length of 740.05 feet and a central angle of 11°19'30"to a point of tangent;thence South 23°50'East,369.98 . . feet to the Northerly right of way of the Bull Canal;thence along said Northerly right of way by the following courses and distances; North 65°03'East 313.67 feet to a point of curvature; thence on the arc of said curve to the left 199.56 feet;said curve having a • radius of 188.06 feet and a central angle of 60°48' to its point of tangency;thence North 4°15' East,297.66 feet to a point of curvature;thence on the arc of a curve to the left 91.00 feet,said curve having a radius of 280.33 feet and a central angle of 18°36'to a point of reversed curve;thence on the arc of said curve to the right 102.62 feet,said curve having a radius of 945.75 feet and a central angle of 6°13' to its point of tangency;thence North 8°08'West,43.88 feet to a point of curvature;thence along the arc of said curve to the right 82.93 feet,said curve having a radius of 685.30 feet and a central angle of 6°56' to its point of tangency;thence North 1°12' West,54.61 feet to a point of curvature; thence on the arc of said curve to the right 61.66 feet,said curve having a radius of 120°86 feet and a central angle of 29°14' to its point of tangency,thence North 28°02'East,30.11 feet to the point of beginning,excepting and reserving,all oil,gas.and other mineral rights previously reserved by Deed recorded August 11,1971 in Book 651 at Reception No. 1573170,together with full rights of ingress and egress to and from the • .lands for the purpose of exploiting all of such oil,gas and other mineral rights.. With all appurtenances, subject to covenants, easements and restrictions of record and subject to general real property taxes for the year 2007. As used herein,the singular indicates the plural and the plural the singular. Executed .8se Y , 2007. n_ Z ✓,�$, 4 Henry W.Johnston, Personal Representative of the Estate of Ruth Irene Johnston, Deceased . No.CPC46.Rev.1-96. I������IVO 11411111111411111111�r1'111111111111 3503322 09/11/2007 12:48P Weld County, CO 2 of 2 R 11.00 0 0.00 -Steve Moreno Clerk&Recorder STATE OF COLORADO ) &Web-a ) ss COUNTY OF LARIMEPt ) The foregoing instrument was acknowledged before me this IM day of September, 2007, by HENRY W. JOHNSTON, Personal Representative of the Estate of RUTH IRENE JOHNSTON, Deceased. My commission expires:.`SOCAS Witness my hand and official seal SR le. Ate :06.-- d ; tary Public st NorARk % My Commlof tplrab Rah A,Ps No.CPC46.Rev.1-96. Page 1 of 1 • • Michelle Martin From: Brian Varrella Sent: Tuesday, September 25, 2007 11:52 AM To: Michelle Martin Cc: Donald Carroll; Susan Ernst Subject: Early grading information for USR-1607, recreational vehicle storage facility on WCR 6 Michelle, I spoke with Don Carroll this morning about USR-1607 and their desire to obtain an early grading permit. I called Don Eymann (applicant, 720-936-7762) and noted that Public Works would support early grading activities under the following conditions: 1. The Applicant will submit 3 copies of a proposed grading plan for review by Planning, Building Inspections, and Public Works. 2. The Applicant will submit 3 copies of a proposed SWMP for review by Planning, Building Inspections, and Public Works. 3. The Applicant will provide a letter to the County specifically requesting an early grading permit. The letter shall contain the following info: a. The Applicant recognizes, in writing, that all early grading shall be performed at his own risk. b. Any and all final design changes discovered during the USR process shall require on-the- ground modifications to the site. c. The on-site detention pond must be excavated immediately (prior to overlot grading) for water quality protection purposes. d. The Applicant agrees, in writing, to meet all applicable County Codes during the USR application process. 4. When Public Works has reviewed and accepted the preliminary proposed materials, we will notify Planning of acceptance for early grading. 5. The USR review process shall continue. I do not have an e-mail address for Mr. Eymann — can you please forward this information to him to verify? Thanks Michelle, and call me if you have questions. Brian ************************4******* Brian K. Varrella, P.E., CFM Weld County Public Works 1111 H Street Greeley, CO 80631 phone: 970-304-6496 fax: 970-304-6497 bvarrellaco.weld.co.us 09/26/2007 Page 1 of 1 • • Michelle Martin From: Michelle Martin Sent: Tuesday, September 18, 2007 2:49 PM To: 'Don Eymann' Subject: USR-1607 Hi Don, The address for the site located at Pt. NW4 of Section 25, T1N, R68W of the 6th P.M Weld County, CO (parcel number 1467 25 000027) is 5360 County Road 6, Erie, CO 80516. Let me know if you have any questions. Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720)652-4210 x 8730 FAX: (720) 652-4211 09/18/2007 Page 1 of 1 s • Michelle Martin From: David Bauer Sent: Tuesday, September 11, 2007 4:50 PM To: Donald Carroll Cc: Don Dunker; Michelle Martin Subject: USR-1607 - RV storage Don C, For some reason I got the pdfs of the drainage and erosion control plans for the RV storage site (USR-1607 — Eymann). I saved them to the M drive for this project. The grading plan, stormwater plan and the erosion control plan are basically the same though there are some small differences in the proposed contours. I have some concern about a 4 to 5 foot deep detention pond with vertical walls right next to the interior alleys in that place. I hope they are fencing it!! Also I can't tell if they are fencing along WCR 6 for the same reason. Do any of the other plans describe how they will build this pond (concrete walls? Wood rail ties??). We can check the drainage report to determine the pond outlet structure design and orifice plate diameter, etc. The general grading plan, providing approximately 1.5 Acre Feet of stormwater storage is fine. I cannot tell where the detention pond outlet is from what is shown on the TetraTech plans. This should be shown (presumably a pipe that drains to the northwest to ???) I can't tell from the drawings TetraTech made whether there is adequate setback from the WCR 6 ROW to allow for possible future widening. I left the drawings on your chair— could you check on that (I know you originally commented to the applicant on that). We should be very sure about that before we release this grading permit. The erosion control plan shows a perimeter silt fence all the way around the site. I strongly suggest that the grading permit specify that they build the detention pond first so that if there is a storm event, they will be able to capture all the muddy runoff on their site, not letting it run into WCR 6 or its Right of Way. Thanks Don, David Bauer, P.E. Weld County Public Works 09/18/2007 USR.1,607 • • 1. Prior to recording the plat: A. The plat shall be amended to delineate the following: 1) All sheets of the plat shall be labeled USR-1607. (Department of Planning Services) Completed 2) The attached Development Standards. (Department of Planning Services) Completed 3) The approved Landscape/Screening Plan. The applicant shall delineate a plant list to coincide with the Landscape Plan. The list shall include how the plants will be maintained and irrigated. All landscaping except for the native grasses shall be removed from County Road right-of-way and future right-of-way. (Department of Planning Services) Completed 4) County Road 6 is classified by the County as a collector road, which requires 80 feet of right-of-way at full build out. The applicant shall verify the existing right-of-way and the documents creating the right-of-way. The plat shall delineate the existing right-of-way and the documents which created it along with any additional right-of-way required. (Department of Public Works) Completed 5) The off-street parking spaces including the access drive, the alley ways, the dump station and wash bay shall be surfaced with asphalt, concrete, or the equivalent and shall be graded to prevent drainage problems. Each paved parking space shall be equipped with wheel guards or curb stops where needed to prevent vehicles from extending beyond the boundaries of the space and from coming into contact with other vehicles, walls, fences, or plantings. (Department of Public Works) Completed 6) This facility shall adhere to the number of on-site parking spaces indicated in Appendix 23- B of the Weld County Code. The total number of on-site parking for this facility shall be one hundred twenty six (126) spaces, of which one (1) shall be a van accessible handicapped parking stall meeting all of the requirements as set forth in the Americans with Disabilities Act. (Department of Planning Services and Public Works) Completed— 6 spaces paved near the office (1 of 6 handicap) and 120 temporary spaces within the lot. 7) The applicant shall address and adhere to the American with Disabilities Act and ADA standards for this facility at all times. Non-ambulatory/ambulatory parking spaces shall be identified and shown on the plat. This site will be required to meet all requirements of the Americans with Disabilities Act. At least one space must be van accessible. The parking spaces must be the closest possible to the entrance. Signing will be required. Curb cuts, ramps and other methods of providing accessibility shall be required to reasonably attempt to meet the requirements of this Act. Should the applicant elect to not adhere to the previously discussed Federal Standards, this office requests that the applicant outline how their proposed site design mitigates the requirements of the American's with Disabilities • USR-.1607 • • Act. (Department of Planning Services) Completed —space closest to the office door is handicap accessible 8) The applicant has proposed a 6' x 10' sign. The location and diagram shall be noted on the plat. (Department of Planning Services) Completed 9) The plat shall be prepared in accordance with Section 23-2-260.D of the Weld County Code. The plat scale shall be enlarged to 1"=40'. (Department of Planning Services) Completed 10)The applicant shall delineate the trash collection areas. Section 23-3-350.H of the Weld County Code addresses the issue of trash collection areas. Areas used for storage or trash collection shall be screened from adjacent public rights-of-way and adjacent properties. These areas shall be designed and used in a manner that will prevent wind or animal scattered trash. (Department of Planning Services) 11)The applicant shall delineate all onsite lighting. Section 23-3-360.F of the Weld County Code, addressing the issue of on-site lighting, including security lighting if applicable, states "any lighting ... shall be designed, located and operated in such a manner as to meet the following standards: sources of light shall be shielded so that beams or rays of light will not shine directly onto adjacent properties...." (Department of Planning Services) Completed 12)The Storm water detention pond shall be located outside the existing and future right of way of County Road 6. (Department of Public Works) Completed 13)The applicant shall show the location of all approved fire hydrants as approved by the Greater Brighton Fire Protection District. (Greater Brighton Fire Protection District) Completed 14)All structures shall be meet the setback and offset requirements of Section 23-3-50.B and 23-3-50.C of the Weld County Code. (Department of Planning Services) Completed 15)The plat shall include a chart listing all the types of storage units and their size. (Department of Planning Services) Completed 16)The lighting plan shall adhere to the lighting requirements for off-street parking spaces per Section 23-4-30.E of the Weld County Code and shall adhere to the lighting standards, in accordance with Section 23-3-360.F and Section 23-2-250.D of the Weld County Code. Furthermore, the approved Lighting Plan shall be delineated on the plat. (Department of Planning Services) USR-.1507 • • Completed B. The applicant shall enter into an Improvements Agreement according to policy regarding collateral for improvements and post adequate collateral for all required improvements. The agreement and form of collateral shall be reviewed by County Staff and accepted by the Board of County Commissioners prior to recording the USR plat. The improvements agreement will not be needed if the necessary improvements are done to the satisfaction of the Department of Public Works and the Department of Planning Services. (Department of Planning Services) TBD C. The applicant shall attempt to address the requirements (concerns) of the Greater Brighton Fire Protection District, as stated in the referral response dated 3/12/07. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (Greater Brighton Fire Protection District) The Greater Brighton fire district had the following concerns. Our response to their concerns is noted after each item. 1. (2) additional fire hydrants shall be installed on the property. The first additional fire hydrant shall be located on the east side of the "Covered Parking 61 spaces" and the second one on the west side. The fire hydrants shall be installed on a looped distributions system. Approved hydrants shall be in service prior to the commencement of combustible construction of any building. Applicant Response: Two additional fire hydrants have been added where requested and will be on a looped distribution system. Approved hydrants will be in service prior to the commencement of combustible construction of any building. 2. The "Covered Parking" and "Garage Parking" structures shall be constructed of non- combustible construction or an automatic sprinkler system shall be provided. Applicant Response: The "Covered Parking"and "Garage Parking"structures will be constructed of non-combustible materials (metal and concrete). 3. A knox key switch shall be provided for the automatic gate on the west side. Please provide a specification sheet on the proposed automatic gate for the Fire District for review and approval. Applicant Response: A knox key switch will be provided for the automatic gate on the west side. A specification sheet will be submitted for Fire District approval prior to installation of the gate. 4. If the fire access gate on the east side of the property is manually operated a knox padlock shall be provided. If the fire access gate is automatic a knox key switch shall be provided. Applicant Response: The fire access gate on the east side of the property is manually operated and a knox padlock will be provided. • USR-1.607 • • 5. All roads on the premise shall be designed and maintained to support the imposed loads of fire apparatus and surfaced to provide all-weather driving capabilities. Applicant Response:All roads on the premise will be designed and maintained to support the imposed loads of fire apparatus and surfaced to provide all-weather driving capabilities. 6. Owner shall be responsible for ensuring that the perimeter access road remain clear at all times. Piling of snow that reduces access width or turning shall not be allowed. Applicant Response: The perimeter access road will remain clear at all times. 7. The most demanding fire hydrant shall provide a minimum fire flow rate of 1500 GPM at 20 psi residual pressure. Applicant Response: The most demanding fire hydrant will provide a minimum fire flow rate of 1 500 GPM at 20 psi residual pressure. D. The applicant shall attempt to address the requirements (concerns) of the Weld County Ambulance Services as stated in the referral response dated 3/5/07. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (Weld County Ambulance Services) The Weld County Ambulance Services stated they had reviewed the request and find no conflicts as long as the request meets EMS and fire access. Applicant Response: The design meets all access requirements. E. The applicant shall submit a dust abatement plan for review and approval, to the Environmental Health Services, Weld County Department of Public Health & Environment. Evidence of such shall be submitted to the Weld County Department of Planning Services. (Department of Public Health and Environment). Applicant Response: Recycled asphalt will be utilized in all drive aisles to minimize the generation of dust. Additionally, a water truck will be employed to control dust on the property as required. • USR-,1.607 • • • F. The applicant shall provide a detailed design and operation plan for the area used for vehicle washing. The washing area shall be designed and constructed to capture all effluent and prevent any discharges in accordance with the Rules and Regulations of the Water Quality Control Commission and the Environmental Protection Agency. Evidence of such shall be submitted to the Weld County Department of Planning Services. (Department of Public Health and Environment). Applicant Response: The vehicle washing area will be very similar to a self serve coin operated car wash. It will consist of a pull-through bay scaled up for RV's. Just like a typical car wash, vehicles will be washed with a hand held pressure wand. From a users point of view it will be no different than any coin operated car wash. Similarities to a typical car wash stop when the used wash water flows down the drain. Since there is no sewer connection at this site used wash water is captured, filtered and reused, resulting in a zero discharge system. As shown in the diagram below used wash water flows into holding tanks where it is then processed to remove particulates, oil, and grease. Contaminates are captured in disposable filters and processed water is reused. Since this is a closed looped system rain water and snow melt must be kept from entering the system. This is accomplished by adding garage doors at each end of the wash bay and forming the concrete pad to shed natural water around and away from the wash bay. 00 r- iI•I (:1N1 J1 �, . .l fr/'/%�,` i' ": ;..,", 7:7:„:'„,.."‹.‘`C,:'mil .. / \4 •.. yam: j Example of typical layout only. USR-1607 • • G. The applicant shall provide written documentation, and diagram(s) illustrating how the vehicle wash water recycler operates. Evidence of such shall be submitted to the Weld County Department of Planning Services. (Department of Public Health and Environment). Applicant Response: The vehicle wash water recycler operates by capturing all effluent into below grade storage tanks. It is then pumped into a Continuous Media Auto Filtration Unit (CMAFU). As dirty water is transferred to the CMAFU wastewater passes through a bed of filter paper. As solids collected blind the filter paper, the water level rises on top of the paper. This engages a mechanical float that activates the media advance motor and allows for a small amount of clean filter media to advance. The water level drops and media stops advancing. A single 100-yard roll of filter media allows for a tremendous amount of solids to be filtered without operator intervention. No cartridge filters are required to be cleaned or changed out. p. kr.7 ♦ • Continuous Media Auto Filtration Unit After exiting the CMAFU waste water then flows into a 3-stage self contained unit (HE/7000 pictured below). The HE/7000 consists of an oil/water separator, a polishing loop for hydrocarbon removal, and a polishing loop for metals removal. As dirty water enters this stage, it is slows down, thus allowing the solids to fall to the bottom of the coalescing tank and the oil water separation to begin. Gravity causes the oily water to flow through 76,896 square inches of oil coalescing plates. These plates allow the oil to gather together into large droplets where they can float to the surface and be mechanically skimmed from the water. Virtually oil-free water then flows into a multi media-polishing loop, which reduces light and emulsified hydrocarbons to less than 10 ppm. The water then moves to a polishing loop for metals reduction. Dual polishing loops circulate water at 50 GPM assuring multiple passes through the job-specific media which prepares the water for reuse After this stage water is now ready to be reused again. • HE/7000 -Dual Stage Multi-Media System with Oil Coalescing USR-1607 • • H. The applicant shall provide a detailed design and operation plan for the RV dump station. The dump station shall be designed and constructed to capture all effluent in a permitted vault with a signal device to indicate when pumping is necessary in accordance with the Weld County Individual Sewage Disposal Regulations, the uniform plumbing code and the Water Quality Control Commission. Evidence of such shall be submitted to the Weld County Department of Planning Services. (Department of Public Health and Environment). Applicant Response: The RV dump station will follow the same design as dump stations found in our national parks. Our design will comply with and be in accordance with Weld County Sewage Disposal Regulations, Uniform Plumbing Code and Water Quality Control Commission. Our system will be constructed on a concrete pad and have a sloped pan to help mitigate any spills by our customers. Our customers will be dumping their black water/sewage into our 2000 gallon vault tank (see attached drawing). The tank will be armed with an alarm system that will let us know that the tank needs to be pumped out and removed from our facility (see attached alarm information sheet). Our sewage vault tank and alarm system will be purchased from Colorado Precast Concrete located in Loveland, CO. installation will be done by a licensed professional who is experienced in this type of installation. We will be contracting out too one of the following septic cleaners on an as is needed basis. 1. A-1 Septic Service, License #9030152 2276 Appaloosa Ave, Brighton, CO 80603, 303-659-0610 2. McDonald Farms ENT Inc, License #9030145 7247 E County Line, Longmont, CO 80501, 303-772-4577 Tank Alert XT Alarm System The Tank Alert®XT indoor/outdoor alarm system monitors liquid level conditions in lift pump chambers, sump pump basins, holding tanks, sewage, agricultural, and other non-potable water applications. The alarm horn sounds and the red beacon illuminates when a potentially threatening liquid level condition occurs. A power on light on the switch indicates power to the alarm panel. UL Listed and CSA Certified. 1 . K curt it ? r. Ir - USR-1607 • • • ::arcs: ti 4:1:1c-a<1 , tv rixo: ` t 0+ ,E,: ...wit cot:11 • 4 \., 4# I ,' : Pr PX• M).* 111V*M t- L •of MIN1:. 4 Nezicpi1.41MianPa b _ _ FtII�'C-- _ i .. ,'t•ATI,:c.,,.t. .i, +T7TT''— iJ1Wi .er-Ka'31:-:ii O`a • '/� - •, •%A.viVYt,LI-0'it / L ''•..."•••• mutt. iI / S J A 1!+R16"t70.--. , 4w4i.1 06 I )R' hC•1K•t. 5.134-:TeCii FM3OM- i'WNW rn ii ,-•bk NA' rtl:1 44, sN'N's., 2.,IINNN.,..NN's••j ..-1 t ti........L2 • 1 • • 4%.>"*".. ../".„.5)".........N.,...........N.s.....N:.::: 146:11:*4., `N, , c•s,,,,,...„7" • ''...`• SE CYION 6e ,, Vint !"Ix SCHEVATIC;rE'ia RecreaiinuaiStorar.e'olutinun Li A. in'NIP STA1'ION t= 'R-ibO7 USR-,1507 • • t 1 1-0 PVC 1 VENT PIPE 0 r, i - ,,,,,________O Tr —I-I sr, To ?0'0 CONC. -j INSrRT PLUGS LL J.1 I_ JJ 1 I9' I 1s' 1 PLAN VI BY --4[-- 4 VENT PI Ph y 1 r'2 , E. f 4'/RAIDER It ii SEAL CASKET FOR dr PVC R L SIZED AS RECCCE hi 7,1a ' T. ~ A M _l_ iv I OLD' 10'-9' SECTION VIEW NOTES: 1. ALL WALLS ARE TAPERED 4'AT THE BOTTOM AND 2-112'AT THE JOINT. TOTAL WEIGHT. 13,91 i N. FLOOR'THICKNESS IS S-1(2' TOW CONC: 92.1 cult.3.HOLE SIZE:13'-O x4-6' 419171 COLORADO PRECAST CONCRETE Inc, I TTEN NAME: 1110 se.14TH ST.,LOJMMn W 1oT17 On)069-8515 MOM.;659-4174 • 2000 GALLON SEPTIC VAULT `....� _..10 1 • USR:1507 • 1 I. The applicant shall submit a waste handling plan, for approval, to the Environmental Health Services Division of the Weld County Department of Public Health & Environment. Evidence of Department of Public Health and Environment approval shall be submitted to the Department of Planning Services. The plan shall include at a minimum, the following: 1) A list of wastes which are expected to be generated on site (this should include expected volumes and types of waste generated). Applicant Response: • Black Water/Sewage from RVs, estimated 2000 gallons yearly • Trash/Dempster, 36 yards yearly • Wash-bay Filters, 2501bs hydrocarbons yearly 2) A list of the type and volume of chemicals expected to be stored on site. Applicant Response: • Hydrobiodigesters for RV wash— 6 gallons contained in system • Non Emulsifying Degreaser- 6 gallons contained in system 3) The waste handler and facility where the waste will be disposed (including the facility name, address, and phone number). (Department of Public Health and Environment) Applicant Response: A-1 Septic Service, License #9030152, 2276 Appaloosa Ave. Brighton, CO 80603 303-659-0610 McDonald Farms ENT Inc, License #9030145, 7247 E County Line, Longmont, CO 8050 303-772-4577 Trash Service Waste Management 2400 W. Union Ave, Englewood, CO 80110 303-797-1600 J. The applicant shall attempt to address the requirements (concerns) of the Farmers Reservoir& Irrigation Company as stated in the referral response dated 3/7/07. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (The Farmers Reservoir& Irrigation Company) The Farmer Reservoir& Irrigation Company had the following concerns. Our response to their concerns is noted after each item. USR-,1507 • • 1. The concerns of Farmers Reservoir& Irrigation Company are in the area of encroachment to the Right of Way of the canal. FRICO requires a minimum of 20' on each side of the canal for a maintenance road plus the distance to the toe of the ditch embankment. The boundaries of the Right of Way must be agreed upon. Applicant Response: We will comply with the 20'foot Right of Way. Based on survey data the property boundary is a minimum of 25'away from the toe of the ditch embankment. 2. Drainage is another concern that must be addressed as FRICO does not allow any developed storm flow into our canals. Applicant Response: The subject property is sloped away from the canal and should not pose any drainage issues. All storm water will flow away from the canal. 3. Please send additional information regarding your project so that we may complete our review and that review criteria can be sent to you, if applicable. Applicant Response: On 3/29/07 a phone call was made and follow-up email was sent to FRICO. No additional action was required as we met their concerns. K. The applicant shall attempt to address the requirements (concerns) of the Weld County Department of Public Works as stated in the referral response dated 3/23/07. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (Weld County Department of Public Works) Public Works had the following requirements: Access: The applicant is identifying the main access gate entrance/ext adjacent to the office with a secondary fire access gate at the east end of the property. A break-away lockbox on the gate shall be installed in the fire access gate. Utilize both access points as necessary. Applicant Response: We will install a Knox Padlock on the fire gate access. Setbacks: The applicant shall be aware of the appropriate setback associated with WCR6. An additional 10-foot right-of-way is to be reserved and noted on the plat. Setbacks from future right-of-way are covered in the Weld County Code (23-1-90). The required setback is measured from the future right-of-way line. Applicant Response: WCR6 requires an 80-foot right-of-way at full build out. Setback from the future right-of-way is 20 feet. Parking: The six guest spaces and one handicap spot shall be hard surfaced (asphalt or concrete) and shall have adequate turning radiuses and properly stripped handicap signing. USR=1607 • • Applicant Response: The six guest spaces including one handicap spot will be hard surfaced (with asphalt or concrete) and will have adequate turning radiuses and properly stripped handicap signing. Circulation: The applicant is identifying the access aisles and a 90°turning radiuses at all four corners. This appears to be adequate. The applicant needs to place on the plat drawing the type of surface of the alleyways, the dump station pad, wash bay. All areas shall be surfaced with concrete, asphalt, recycled asphalt, gravel or the equivalent. Applicant Response: The alleyways will be surfaced with recycled asphalt and the dump station and wash bay pads will be concrete. Storm Water Drainage: I contacted the applicant to forward that report to our Drainage Division for review and evaluation. It appears on the plat drawing that the applicant is identifying the storm water detention pond to be in the Weld County existing road right-of-way or future right-of- way. Once the plat drawing has identified the rights-of-way, the detention pond shall be placed on the applicant's property. Work with our storm water Drainage Division on site grading and location of the detention pond. Applicant Response: Tetra Tech had forwarded drainage calculations to Drainage Review. Brian Varrella completed a review and evaluation and found a detention pond of 1.35 acre-feet would be required. His calculations assumed no water flow under the canopies and we will be requesting a recalculation assuming water does run off under the canopies. The detention pond has been relocated outside of the future right-of-way onto the applicant's property. Plat Drawing: The applicant needs to place on the plat drawing the WCR6 existing rights-of- way as a 60-foot width, 30 feet either side of the section line. Future right-of-way shall be dimensioned at 40 feet from the center line. Applicant Response:A 40 foot future right-of-way will be added to the plat in addition to the 30 foot current right-of-way. L. The applicant shall attempt to address the requirements (concerns) of the Weld County Sheriff's Office as stated in the referral response dated 4/6/07. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (Weld County Department of Public Works The Weld County Sheriff's Office had the following concerns: 1. Mail distribution for the home and business should be limited to as few locations as possible with a central drop off location within the property. It should be developed so that residents or employees do not have to cross a county road to obtain their mail Applicant Response: If allowed we will be requesting mail be delivered to the main office only. There will be no residence on the property. • USR;1607 1 2. A permanent sign should be placed at the entrance to the property that meets the planning and zoning standards and is approved by the county commissioners, detailing the name of the business address, and a graphical presentation of the roadways within the property. There should be a plan developed to maintain the sign. Applicant Response:A permanent sign will be placed at the entrance to the property similar to what was presented at the county commissioners hearing. The sign will contain the business name, address, phone number and website. We will consider placing a graphical representation of the property inside the main gate. The main entrance sign will be constructed of stone and steel and will require minimum maintenance. 3. A plan should be developed to maintain roadways on the property, especially during inclement weather conditions for emergency vehicles. Applicant Response: The primary access route will remain clear at all times and snow shall not be piled that reduces access width or turning. 4. If there are oil and gas production facilities within this property, they need to be fenced off in order to mitigate the potential for tampering. Applicant Response: There are no oil and gas production facilities on the property. 5. Due to the nature of this kind of business there is an increased potential for theft and burglary to the items stored together as they provide a concentrated target for thieves. Because of this there is an increased need for security systems and or security patrols. The Sheriff's Office would request that there be a comprehensive security plan developed by the developer to be followed by the site operator. Applicant Response:A very extensive security system is planned for this facility. There will be a single entrance/exit near the main office on a key code access with cameras recording license plates and drivers and they enter/exit. Digital video cameras will also be located at the ends of every aisles, entrances and exits of the gates and within the office. The cameras will be digitally recorded 24 hours a day. Individual door alarms will be placed on the garages and motion detectors connected to the alarm system will be made available to customers to place within their vehicles. The office will also be on an alarm system with motion detectors. Page 1 of 2 • Michelle Martin From: Charlotte Davis Sent: Wednesday, September 05, 2007 3:43 PM To: Michelle Martin Subject: RE: USR-1607 Progress Michelle, Condition 1E Dust Abatement Plan for USR-1607 has been submitted, reviewed and is approved. Condition 1E has been met. Information for Condition 1 F, 1G, 1H and 1L has not been addressed at this time. Best regards, Char Charlotte Davis, MPH Weld County Department of Public Health & Environment 1555 N. 17th Avenue Greeley, CO 80631 (970)304-6415 x2208 FAX (970)304-6411 From: Michelle Martin Sent: Thursday, August 23, 2007 6:20 PM To: Donald Carroll; Charlotte Davis Subject: FW: USR-1607 Progress Hi Don and Char, Please review the attached document and let me know if the applicant has addressed any/all of your concerns outlined in the resolution (USR-1607). Let me know if you have any questions. S114X ,Sizirek Planner II 4209 CR 24.5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720) 652-4211 From: Don Eymann [mailto:deymann@comcast.net] Sent: Tuesday, August 21, 2007 2:49 PM To: Michelle Martin Cc: dp.lee@comcast.net Subject: USR-1607 Progress Michelle, 09/06/2007 . Page 2 of 2 • We have been working very hard to close the items required for the plat. Attached is the progress made toward answering the plat recording requirements. Engineering of the detention pond has been taking longer than anticipated but should be complete this week. We will also have the remaining questions answered by Monday. We also have spent a good deal of time on the CAD drawing and Lauren Light should be bringing by the latest copy to your office. Please call if you have any questions, Thanks, Don Eymann 720-936-7762 09/06/2007 • Michelle Martin From: Donald Carroll Sent: Friday, August 24, 2007 9:32 AM To: Michelle Martin Subject: RE: USR-1607 Progress Prior to recording the plat: 1-L ? PW. Everything else looks good. Original Message From: Michelle Martin Sent: Thursday, August 23, 2007 6:20 PM To: Donald Carroll; Charlotte Davis Subject : FW: USR-1607 Progress Hi Don and Char, Please review the attached document and let me know if the applicant has addressed any/all of your concerns outlined in the resolution (USR-1607) . Let me know if you have any questions. Michelle Martin Planner II 4209 CR 24 .5 Longmont, CO 80504 mmartin@co.weld.co.us PHONE: (720) 652-4210 x 8730 FAX: (720) 652-4211 From: Don Eymann [mailto:deymann@comcast.net] Sent: Tuesday, August 21, 2007 2 :49 PM To: Michelle Martin Cc: dp.lee@comcast.net Subject: USR-1607 Progress Michelle, We have been working very hard to close the items required for the plat. Attached is the progress made toward answering the plat recording requirements . Engineering of the detention pond has been taking longer than anticipated but should be complete this week. We will also have the remaining questions answered by Monday. We also have spent a good deal of time on the CAD drawing and Lauren Light should be bringing by the latest copy to your office. 1 •• Please call if you have any quests, Thanks, Don Eymann 720-936-7762 2
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