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HomeMy WebLinkAbout990843.tiff Windsor Fire Department 728 Main Street Windsor , Co.80550 Mr. &Mrs. Chuck Schnuerle 1261 95th Ave. Greeley, Co. 80634 March 28,1999 Dear Windsor Fire Department, My Wife and I have been approved by Weld County Planning Board to construct a self storage unit that will consist of 150 to 200 units on the north side of our property. This letter is to find out what concerns you may have with this project and to be able to address those concerns. Please advise us to any concerns you may have. Sincerely, >4-442 Weld County planning Dept, 1n944 P ECE VED EXHIBIT 990843 i rim WERNSMAN r ,,, _. . 1 Iiimi ENGINEERING, I JG. n , 7 710 11""AVENUE SUITE 201 • GREELEY, COLORADO 8Q631,,. Phone (970) 353-4463 Fax (970) 353-9257 T DESIGN OF SEWAGE DISPOSAL SYSTEM MODIFICATIONS FOR CHUCK AND GAIL SCHNUERLE COMMERCIAL DEVELOPMENT (SELF STORAGE BUILDINGS) 1261 95th Avenue Greeley, Colorado April 12, 1999 Project No. 99-538-01 • 4 /,tr f ,% 0 s•' .1 u.: 1f E o 17467 z 4:4 Vi ^s4 le ?ZS :� 4 ./°Nit h4%, OF C, p,p\ _- EXHIBIT F INTRODUCTION The site is located at 1261 95th Avenue, Greeley, Weld County, Colorado, on the west side of 95th Avenue approximately 'A mile south of Hwy. 34 Business. The site is not in the city limits of Greeley. Currently there is a two bedroom farmhouse on the property which uses an existing septic system. The area north of the house is planned to have a commercial development consisting of self- storage units. The planned development will have four buildings with a total of approximately 180 individual storage units. One restroom is planned for the use of the business patrons. The intent is to tie the new restroom into the existing septic system. The purpose of this study is to determine if the existing system is working properly and to determine if it has the capacity for the additional restroom load, and if not then to design a practical renovation to the system. It is anticipated that each individual storage unit will be visited by one person every two weeks average, and that this person will use the restroom on half of his visits. Further it is anticipated that 5 gallons of water will be used at each visit. So the anticipated average water use will be (180 x 5) / (14 x 2) = 32 gal./day. For design purposes, an average flow of 50 gal./day will be used. The source of water for the facility is an oxisting wolf. C 1117 err Gred? , ,A.Cv OBSERVATIONS A percolation lest was conducted by Wernsman Engineering, Inc. on April 9, 1999. The test showed an average percolation rate of 5.5 min./inch. An eight foot deep test pit was also observed for soil conditions. The test pit was observed more than 24 hours after it was opened. The soil profile consists of silty sand for the full depth of eight feet. No ground water or other limiting zones were observed. Measurements for locating the existing system were also performed. The existing system consists of a 1000 galllon concete septic tank and 100 lineal feet of 3 ft. wide absorption trench. The ends, junction, and much of the trenches were uncovered for inspection. The observation pit also allowed for inspection of the bottom of 1:he trench at the west end. See Site Plan. The system appeared to be performing well. The trenches appeared to be dry. Page 2 PERCOLATION RATE The average percolation rate used in the design is 5.5 min./inch. FLOW House (2 bedrooms) Average flow= 4 persons x 75 gal./person/day = 300 gal./day Commercial (180 self-storage units) Average flow(see introduction) = 50 qal./dav Total Average Flow = 350 gal./day Peak flow(150% of average)= 525 gal./day SEPTIC TANK Retention time = 30 hours Tank volume required = 525 x 30 /24 = 656 gallons ABSORPTION TRENCHES Trench area required = 525 x 5.5 / 3.5 = 352 sq. ft. CONCLUSIONS Based on my observations and calculations, it appears that the existing system is working well but does not have the capacity to add the commercial restroorn. Also, it appears that the existing west trench will interfere with the planned building location. Therefore I recommend the existing west trench be abandoned and new absorption trenches be added as shown on the enclosed plan. Page 3 SPECIFICATIONS 1. Septic tank— Use existing 1000 gal. tank 2. Absorption trench size— Use 50 feet of existing 3 ft. wide trench and 67 feet (min. of new 3 ft. wide trench. 3. Gravel for new trench — 12" (min.) of clean gravel from %" to 21/2" in size. 4. Backfill material — On site silty sand. 5. Distribution Box— Installed to provide equal distribution of the effluent to each line. 6. Leach line•-3 or 4 inch diameter perforated plastic pipe. Install with 6° min. gravel below pipe and 2" min. gravel above pipe. Install to provide even distribution over the entire length of trench. All construction shall be in compliance with the Weld County Health Department and State regulations. 7. Cover- Untreated building paper, straw or filter fabric placed over the clean gravel to prevent the system from becoming clogged. 8. Any deviations from the specifications shall be approved prior to construction by Wernsman Engineering, Inc. 9. The system shall be inspected by Wemsman Engineering, Inc. and the 'weld County Health Department during critical parts of construction. 10.Provide positive surface drainage over the system by sloping the finish grade. 11.The top of 1:he trenches should be seeded or sodded. No part of the trench system should be covered with gravel or pavement nor should it be driven over. Trees or shrubs should not be planted in the general area of the system. 12.It is important that tractor tread compaction of the soils at the bottom of the trench be minimized so that the filter soil does not become impermeable for absorption. If this soil does become compacted, it should be loosened prior to placement of the clean gravel. 13.Backfill and regrade area over the system system as may be required to provide a minimum of one foot and maximum of two feet of backfill over the gravel. 14.The system installer shall provide as-built plan to the Owner, Engineer and Weld County Health Department. Plye 4 Wo.D retice OBSEIWA7roN PiT I( 06 j � I I V i; II S o p �I I __.., ._,cs_ 10 ¢ t L. r i ________4_ * 1 03 i It I W I PERcoLATloN HOLES inr I _- A XI X Witte PEA/a prop. sire PLAN EXI5ttN -N---->0 2: 2o ' 75 ,kVC d 174ye .5- EX(57: WOOD FENCE i a r k b ec k E, 11 t 1 i ti v H Z IAMNON TRCNcM i , I V � i I ' V l Li .6, ‘._ riticcit_ y lii __,L(- -)... �, NCw pr,sTRlBurioN box W h j W2 \\ %. 4.W li I I Il Q I I I It . VIII I 4 t.X- tit X R 1 A' EMS?: WIRE 'Wee 5ITl PLAN rgoPO5Ev —N-> I" = 2O ' 95 Ave-. SLIM' S SANITATION INC A-1 DRAIN SERVICE ROTO-ROOTER of WELD COUNTY P O BOX 357 La SALLE CO 80645-0357 ( 970) 284-6951 1-800-728-6951 WORK ORDER CUSTOMER WORK ORDER # : 9207 RGAK DATE ORDERED: 05/01/96 1261 9I5 . LAVENE5TH AVENUE DATE WANTED : 05/03/96 1261 9 ORDERED BY : LAVONE ROGAKIS GREELEY 52 941a CO 80631 TERMS : COD 3P.O. NUMBER : 35 JOB NUMBER : SALES PERSON : RICHARD KLINE ENTERED BY : DK TANK : 1-SEP 1261 95TH AVE TANK ADDRESS : 1261 95TH AVENUE TANK C/S/Z : GREELEY CO 80631 HOSE REQ' D UTE SIZE v ~�' LAST SERy JCE : /.� BY ' !`/c.• 5 �Loc NEXT SERVICE Cr./ _f LOCATION /oat C -. 1 � t. REMARKS • 7).)--it-41 /:— _i f__ INSTRUCTIONS Nor h of house. No pRSert [ nt- & St, t.))1 679/iL 1.4-xt y ; 5 wOR( i aY (A) C.LL 4 fjOO•1 SERVICE ORDERED: SERVICE PERFORMED - BY - DATE LT LOCATED TANK r• ; coo • COO UC UNCOVERING CHARGE - `-- -- SEP SEPTIC TANK _ , ENTER TANK LOCATION SKETCH BELOW Windsor-Severance Fire Protection District April 12, 1999 Mr. And Mrs. Chuck Schnuerle 1261 95th Avenue Greeley, Colorado 80634 Dear Sir and Madam: This letter is in response to your inquiry dated March 28, 1999. It is our understanding that you are intending to construct 150 to 200 storage units. From your correspondence, I do not have a clear understanding of the address or location of the proposed site, nor will the district be able to specifically respond to concerns without the plot plan depicting the proposed project. In general, the Windsor-Severance Fire Protection District has adopted the 1994 edition of the Uniform Fire Code. The contents of this code will dectate the required fire flows necessary to have available on site, based on the construction type and square footage of the structures. Additionally, the code will address access to the property, distances between structures and any exposures we might have to protect in the event of fire. We will also discuss items or materials that should not be allowed to be stored in the buildings. We will be able to better address the code concerns when we receive a copy of the proposed plot plan. As this is developed, we will be available to assist with questions you may have. Respectfully, L / �i rry Ward Division Chief CC: Schnuerle File ph 970.686.9596 :QS Fx 970.686.9623 ep 728 Main Sired ""134 Windsor,Colorado 80550 April 10,1999 City of Greeley Planning Commission 1100 10th Street Greeley Co. 80631 Dear Members of the City Planning Commission, This letter i:s an attempt to address the concerns you have with the proposal of building one hundred and fifty to two hundred self-storage units at 1261 95 Ave. in Weld County. You stated that you wanted the area paved with concrete or asphalt. We plan on paving but not right away. We live on a dirt road and are planning on building in two stages. Until we do pave we will use a dust suppressant to keep the dust to a minimum on all driveways,parking areas and loading zones. Your third statement about the buildings which are visible from the exterior of the site,we have no idea what the design review portion of the City of Greeley Development Code is. If you would like to send us some suggestions,we would be glad to look at anything you think is a good idea. To the best of our knowledge the Weld Planning Board has tried to contact the Colorado Division of Wildlife and has not heard back from them. We are talking about two and a half acres. Right now it is unused pasture grass. We will follow all building and fire codes. We are investing a lot of money and the last thing we want to have happen is for it to burn up. Enclosed please find the plat for the landscaping with correction made on it. We will be living right next to the site and will keep the area clean,watered,mowed and in good repair. We would like to take this opportunity to thank you for time and consideration in this matter. Chuck Schnuerle Gail Schnuerle CC: Weld County Planning Commission PRELIMINARY DRAINAGE REPORT FOR SCHNUERLE MINI STORAGE PROJECT WELD COUNTY, COLORADO Prepared for Commercial Building Systems 2347 West Eighth Street Loveland, Colorado 80537 April 15, 1999 Commission No.: 3022-08-01-01 Prepared By FOUNDATION ENGINEERING CONSULTING ENGINEERS, LTD. 5110 Granite Street Loveland, Colorado 8O538 FOUNDATI ON I Consulting ENGINEERING Engineers, Inc. April 15, 1999 Commission No.: 3022-08-01-01 Commercial Building Systems 2347 West Eighth Street Loveland, Colorado 80537 Gentlemen: Enclosed is the preliminary drainage report and plan for the four proposed mini-storage buildings to be constructed in Weld County at 1261 95th Avenue. Briefly, a high point is shown at the south end of each building, and flows will be directed between the buildings to the north property line to a concrete trickle channel. The trickle channel will direct flows to the northwest corner of the site and then to the existing retention pond in the adjacent field. You will need to have the adjacent property owner sign the included form acknowledging acceptance of the increased runoff. If you have any questions, please feel free to call. Respectfully, k pitenn et Jason E. Baker, Civil Engineer ,` Reviewed by: ,��°/g''�i-Ctr ' O James A. Cherry, F.E. °•° FOUNDATION ENGINEIzG„CONSULTING ENGINEERS, LTD. /1/4 ' )!�.r, . '• `///1. f ;. JEB/jle 5110 Granite Street, Suite D',Loveland, Colorado 80538 •(970)663-0138 •Fax(970)663-1660 500 Kimbark Street, Suite 101 .Longmont, Colorado 80501 •(303) 702-0661•Fax (303) 774-8413 INTRODUCTION This Preliminary Drainage Report is being prepared in conj unction with a preliminary drainage plan for the development of four proposed mini-storage buildings to be constructed in Weld County, Colorado. The site is located at 1261 95th Avenue, west of Greeley. The site is surrounded by agricultural properties. Refer to the vicinity map on the Special Review. This report has been prepared to meet the requirements of the City of Greeley Storm Drainage Criteria Manual as they apply to this project. METHODOLOGY The Rational Method will be used to develop runoff volumes for this project. The Rational Method is an excellent predictor of flows in drainage basins less than 200 acres. HISTORIC FLOWS Off-site flows have little impact on this site since the south end of the mini-storage area is at the crest of a small hill. Historic flow on this site is from south to north where flows run into an adjacent field. All runoff from this site and the two adjacent fields flows into an existing retention pond off the northwest corner of the site. The retention pond is surrounded with dense weeds, grasses, and cattails. PROPOSED DRAINAGE IMPROVEMENTS As shown on the proposed drainage plan, all runoff will continue to flow south to north on the property with high points at the south end of each building. A concrete trickle channel will be 1 constructed along the north property line, directing flow to the northwest. From the corner of the property, the pan will cross the existing service road, and then runoff will flow overland to the existing retention pond in the adjacent field. No on-site detention will be provided. Calculations are provided showing the increase in runoff from historic to developed conditions for the effected area. An existing irrigation ditch along the south end of the area to be developed will be relocated approximately thirty (30) feet to the south per the contractor and owner's specifications. Portions of the ditch may be replaced with concrete pipe of equal or greater volume. CONCLUSIONS 1. The site does not sit in a regulated flood plain and is not subject to severe floodin.g problems. 2. An existing retention pond will collect runoff from the site as it has done historically. HISTORIC RUNOFF Area= 2.03 acres Historic Run-off Path= 260 feet south to north Slope= 3.12% Historic Coefficient of Infiltration C = 0.2 2 Time of Concentration(Tc) from Figure 3.2, Page 6 Tc = 21 minutes Intensity from Figure 3.3, Page 7 15 = 2.8 inches/hour 1100= 5.22 inches/hour Q = CfCIA Q5 = (1.0)(.20)(2.8)(2.03) = 1.14 cfs Quo' (1.25)(.20)(5.22)(2.03) = 2.65 cfs *Flows are sheet flow off north end of site. DEVELOPED RUNOFF Flow Path= 500 feet Developed Coefficient of Infiltration (NOTE: Approximately 84.2% of the site is to be rooftop or recycled asphalt.) C = (0.158)(0.2)+ (0.842)(0.95)= 0.88 Time of Concentration Tc= L/180 + 10 = 500/180 + 10 = 12.78 minutes Intensity from Figure 3.3, Page 7 IS = 3.68 Iloo= 6.86 inches/hour Q5 = (1.0)(.83)(3.68)(2.03) = 6.2 Q10,5 = (1.25)(.83)(6.86)(2.03) = 14.45 cfs 3 EROSION CONTROL Straw bale dikes and silt fences should be used to prevent erosion during construction. The dikes should be constructed at fifty (50) feet on center in all swales and concrete pans. We recommend a silt fence along the north and west property lines during construction or until landscaping or paving is established. A tracking pad should be placed at the entrance of the site during construction. All erosion control measures should be constructed in accordance with standard Weld County details. Follow Best Management Practices in the development of the site. . 4 RUNOFF AGREEMENT I, Douglas L. Tierne, give permission to Charles and Gail Schnuerle to release runoff from their Mini Storage facility at 1261 95`° Avenue, Greeley, Colorado onto my property. I understand that the runoff will be larger than historic flows and will go into the existing retention pond on my property off the northwest corner of their site. It is also my understanding that the concrete trickle channel that will be constructed on the north property line of the Mini Storage site will extend across my service road in such a way that it can easily be driven across. Also, it is understood that the Schnuerle's (or future owners) will be responsible for the maintenance of the concrete trickle channel. Douglas L.Tienne, 1525 95th Avenue,Greeley 5 500 Soma=__ _ a ' a.•�asu_••n re 70 =seen_= ♦ .a.r as • . aS•.••. 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Nrarer♦,,L.r_u•a.Irs••�a■ r i a..iva.aa.a., G, Ui il.a■ aa.•. �1 sr P•ae.aaaun -- .- a ZI 0 era v aaa •••••aa.•!••iu•aa•u 1 eta i , I IIIYI��!lE:ed= • - r r• r• a• ■u�� o. .r•�•a••a ar , r rn�ri/f�t•a en t..•—•..:::—.....•--•.•. ar— .r//Iri.ra..J..a/iau.r•ar•w•a•aaaa afluorr... aura• rra.r:.•a►Sar-a.a.w— a...a.■ • ra.apau.a maan.ryaa•a..—. 0-90 {/ i .�•aa•.•ta■ iI ■ns.•.•.-- • '�3�si�%!!= __ to ..alr� ...• a- •iii ar�•.•s ..aa• mm ���•,� MIIiII: .... -- naaa.a-Emaaaaa• -•••ware•... a� • . • 0 Figure 3-2 OVERLAND TIME OF FLOW CURVES Table 3.3. Extended Duration-Intensity-Frequency Tabulation, Greeley, Colorado. 4a1 5%'k'<F±f Zak y R - c", , w ,., a sy 8idhltit t to le :rf i ,:ate , Y�C �s�+ mY� y : Y£ ;� tf 3 4.. Z „. ; x olr �1� �r t zIA yy. ' sva X50 Y `k b-`{^ s -.,-4, , Y.tr,7 +` DR'M(vil?ir) Ul r)>."aw, x (IA7hR " >. (1 it ¢ ., 5 min 3.62 5.19 6.12 7.31 8.73 9.67 10 2.81 4.02 4.75 5.67 6.78 _ 7.51 15 2.37 3.4 4.01 4.79 5.72 6.34 20 2 2.86 3.38 4.03 4.81 5.34 25 1.77 2.54 3 3.58 4.28 4.74 30 1.64 2.35 2.78 3.22 3.97 4.39 40 1.34 1.92 2.27 2.7 3.23 3.59 50 1.16 1.66 1.96 2.34 2.8 3.1 60 (1 hr) 1.04 1.49 1.76 2.1 2.51 _ 2.78 80 0.8 1.14 1.47 1.61 1.91 _ 2.16 100 0.67 0.94 1.2 1.3 1.58 1.79 120 (2 hr) 0.58 0.8 0.96 1.14 1.3 _ 1.5 150 0.49 0.66 . 0.78 0.93 1.1 _T 1.23 180 (3 hr) 0.42 0.56 0.67 0.8 0.92 1.05 4 hr 0.33 0.44 0.53 0.62 0.72 0.81 5 0.27 0.36 0.43 0.5 0.57 0.66 6 0.23 0.3 0.37 0.43 0.49 _ 0.57 8 0.2 0.24 0.29 0.34 0.39 0.44 10 0.15 0.2 0.24 0.29 0.32 _T 0.36 12 0.13 0.17 0.2 0.25 0.28 _- 0.31 14 0.11 0.15 0.18 0.23 • 0.24 0.27 16 0.1 0.13 0.16 0.2 0.22 0.24 18 0.09 0.12 0.14 0.18 0.19 • 0.21 20 0.08 0.11 0.13 0.17 0.18 0.19 22 0.07 0.1 0.12 0.16 0.16 _ 0.17 24 0.07 0.09 0.11 0.14 0.15 0.16 >- a w toi p 0• dN o 0 wok cam(7) Z gowzzaW 0.. <2. d Q 20 Q(j2 a Oct vs W w ae mgzo o o o -��w W ti Zoo° c tO • i/ill Z • y 1 , , Lu I- V/ CO CO CO CO S _J lac .c° o U mier a a:Cst 0 0 >- 5 0 v r n C i E\r TC TIE PRELIMINARY DRAINAGE REPORT FOR SCHNUERLE MINI STORAGE PROJECT WELD COUNTY, COLORADO Prepared for Commercial Building Systems 2347 West Eighth Street Loveland, Colorado 80537 April 15, 1999 Commission No.: 3022-08-01-01 Prepared By FOUNDATION ENGINEERING CONSULTING ENGINEERS, LTD. 5110 Granite Street Loveland, Colorado 8O538 ( 4. EXHIBIT # G use kV! FOUNDATION I Consulting ENGINEERING Engineers, Inc. April 15, 1999 Commission No.: 3022-08-01-01 Commercial Building Systems 2347 West Eighth Street Loveland, Colorado 80537 Gentlemen: Enclosed is the preliminary drainage report and plan for the four proposed mini-storage buildings to be constructed in Weld County at 1261 95th Avenue. Briefly, a high point is shown at the south end of each building, and flows will be directed between the buildings to the north property line to a concrete trickle channel. The trickle channel will direct flows to the northwest corner of the site and then to the existing retention pond in the adjacent field. You will need to have the adjacent property owner sign the included form acknowledging acceptance of the increased runoff. If you have any questions, please feel free to call. Respectfully, p" ann er,i9= B''�vi Jason E. Baker, Civil Engineer Reviewed by: F James A. Cherry, P.E. FOUNDATION ENGINE1ltG,CONSULTING ENGINEERS, LTD. JEB/jle 5110 Granite Street, Suite D•Loveland,Colorado 80538 •(970)663-0138 .,Fax(970)663-1660 500 Kimbark Street, Suite 101 •Longmont, Colorado 80501 .(303) 702-0661•Fax (303) 774-8413 INTRODUCTION This Preliminary Drainage Report is being prepared in conjunction with a preliminary drainage plan for the development of four proposed mini-storage buildings to be constructed in Weld County, Colorado. The site is located at 1261 95`h Avenue, west of Greeley. The site is swrounded by agricultural properties. Refer to the vicinity map on the Special Review. This report has been prepared to meet the requirements of the City of Greeley Storm Drainage Criteria Manual as they apply to this project. METHODOLOGY The Rational Method will be used to develop runoff volumes for this project. The Rational Method is an excellent predictor of flows in drainage basins less than 200 acres. HISTORIC FLOWS Off-site flows have little impact on this site since the south end of the mini-storage area is at the crest of a small hill. Historic flow on this site is from south to north where flows run into an adjacent field. All runoff from this site and the two adjacent fields flows into an existing retention pond off the northwest corner of the site. The retention pond is surrounded with dense weeds, grasses, and cattails. PROPOSED DRAINAGE IMPROVEMENTS As shown on the proposed drainage plan, all runoff will continue to flow south to north on the property with high points at the south end of each building. A concrete trickle channel will be 1 constructed along the north property line, directing flow to the northwest. From the corner of the property, the pan will cross the existing service road, and then runoff will flow overland to the existing retention pond in the adjacent field. No on-site detention will be provided. Calculations are provided showing the increase in runoff from historic to developed conditions for the effected area. An existing irrigation ditch along the south end of the area to be developed will be relocated approximately thirty (30) feet to the south per the contractor and owner's specifications. Portions of the ditch may be replaced with concrete pipe of equal or greater volume. CONCLUSIONS 1. The site does not sit in a regulated flood plain and is not subject to severe flooding problems. 2. An existing retention pond will collect runoff from the site as it has done historically. HISTORIC RUNOFF Area= 2.03 acres Historic Run-off Path= 260 feet south to north Slope= 3.12% Historic Coefficient of Infiltration C = 0.2 2 Time of Concentration (Tc) from Figure 3.2, Page 6 Tc = 21 minutes Intensity from Figure 3.3, Page 7 I5 = 2.8 inches/hour Iwo = 5.22 inches/hour Q=C,CIA Q5 = (1.0)(.20)(2.8)(2.03) = 1.14 cfs Qwo=(1.25)(.20)(5.22)(2.03)=2.65 cfs *Flows are sheet flow off north end of site. DEVELOPED RUNOFF Flow Path= 500 feet Developed Coefficient of Infiltration (NOTE: Approximately 84.2% of the site is to be rooftop or recycled asphalt.) C = (0.158)(0.2) + (0.842)(0.95) = 0.88 Time of Concentration Tc = L/180 + 10 = 500/180 + 10 = 12.78 minutes Intensity from Figure 3.3, Page 7 IS = 3.68 Loo = 6.86 inches/hour Q5= (1.0)(.83)(3.68)(2.03) =6.2 Qioo = (1.25)(.83)(6.86)(2.03) = 14.45 cfs 3 EROSION CONTROL Straw bale dikes and silt fences should be used to prevent erosion during construction. The dikes should be constructed at fifty (50) feet on center in all swales and concrete pans. We recommend a silt fence along the north and west property lines during construction or until landscaping or paving is established. A tracking pad should be placed at the entrance of the site during construction. All erosion control measures should be constructed in accordance with standard Weld County details. Follow Best Management Practices in the development of the site. . 4 RUNOFF AGREEMENT I, Douglas L. Tienne, give permission to Charles and Gail Schnuerle to release runoff from their Mini Storage facility at 1261 95th Avenue, Greeley, Colorado onto my property. I understand that the runoff will be larger than historic flows and will go into the existing retention pond on my property off the northwest corner of their site. It is also my understanding that the concrete trickle channel that will be constructed on the north property line of the Mini Storage site will extend across my service road in such a way that it can easily be driven across. Also, it is understood that the Schnuerle's (or future owners) will be responsible for the maintenance of the concrete trickle channel. Douglas L.Tienne, 1525 95th Avenue,Greeley 5 500 law nuuiuuu ■ :on a 7O ..._ ■-1 .. , Anson •.■... • 1 ., .Mill i .Alms• y' a a ran .• ■ i.■r......■v• ■ �I■■1 O•u �O ir. 400 • IMAPill 6° /I.■►4. .■■■.A■■r• :U■ G..■■:■: ...dm gr.V...Y.1 ■'I r'• ■:i■. ■ O rq.vi..v■:! O r.u■ L■ ''I'll! illilllliliili: lillulliillili irr1UaI!g iii4ililll:r:av� ::u'r..i1, Will 50 300 • ifiii11iiflilil 111IIi111111i�:/i1rJ1/:111� 1�111111►.:11/:�..■.:.■■0 .. wail 'a 1 '. o■ ■■■!Ii I- liililiiieili:i iiill.Iii1D;:I:iraptail1r:11111/:iii'.r:.M.-. .1:i1 , !Mil W est. O%Me .1� W 11 0 riva.:. ■i �: •. .. fn W ur ul. ■I ■ iu ....-. W 200 is y si \t.. 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S • 5 StQrriM. xeguenty , d es p IOv.: 't5y goy .4100 q Ar A /,ti5 mm 3.62 5.19 6.12 7.31 8.73 9.67 10 2.81 4.02 4.75 5.67 6.78 _ 7.51 15 2.37 3.4 4.01 4.79 5.72 6.34 20 2 2.86 _ 3.38 4.03 4.81 _ 5.34 25 1.77 2.54 _ 3 3.58 4.28 4.74 30 1.64 2.35 _ 2.78 3.22 3.97 4.39 40 1.34 1.92 2.27 2.7 3.23 3.59 50 1.16 1.66 1.96 2.34 2.8 3.1 60 (1 hr) 1.04 1.49 _ 1.76 2.1 2.51 2.78 80 0.8 1.14 1.47 1.61 1.91 2.16 100 0.67 0.94 _ 1.2 1.3 1.58 1.79 120 (2 fir) 0.58 0.8 0.96 1.14 1.3 1.5 150 0.49 0.66 _ _ 0.78 0.93 1.1 1.23 180 (3 hr) 0.42 0.56 _ 0.67 0.8 0.92 1.05 4 hr 0.33 0.44 0.53 0.62 0.72 0.81 5 0.27 0.36 _ 0.43 0.5 0.57 0.66 6 0.23 0.3 _ 0.37 0.43 0.49 0.57 8 0.2 0.24 _ 0.29 0.34 0.39 0.44 10 0.15 0.2 _ 0.24 0.29 0.32 _ 0.36 12 0.13 0.17 _ 0.2 0.25 0.28 0.31 14 0.11 0.15 _ 0.18 0.23 • 0.24 0.27 16 0.1 0.13 _ 0.16 0.2 0.22 0.24 18 0.09 0.12 - 0.14 0.18 0.19 0.21 20 0.08 0.11 _ 0.13 0.17 0.18 0.19 22 0.07 0.1 0.12 0.16 0.16 0.17 24 0.07 0.09 0.11 7 0.14 0.15 I 0.16 >- tio+l 0 • 0-to N >Ch® _J 4 w Q w En Z zz zmoQQww a. a—cc Q Uaho 0 w U n� V a� to M220 U o o zoo° cc I 7 141 III oIt I III z I I 1 I I11 Q a I f— U wLa • y T. C .. t C7 S J z _U —cgitt: >- cc W C F- 0 O V a (460 a \c Allig TO: Board of County Commissioners FROM: Julie Chester, Lead Planner 1119 € DATE: May 12, 1999 SUBJECT: Changes to conditions COLORADO The following are changes to the conditions of approval: Add: 2.B.4) The revised circulation plan Change: 2.B.2) To say detention rather than retention. UEXHIBIT w (ASQ'#12111 Hello