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HomeMy WebLinkAboutSite Certifications - 10/27/2009NORTHERN ENGINEERING September 14, 2009 ADDRESS: PHONE: 970.221.4158 200 S. College Ave. Suite 100 Northern E N Fort Collins, CO80524 FAX: 970.221.4159 orthernEngineering.com Mr. Jay Barber Stormwater Utilities City of Fort Collins 700 Wood Street Fort Collins, Colorado 80522-0580 RE: Mason Pawn m Grading/Drainage Certification Jay, 07�FvjGG� This letter is in regards to Mason Pawn — Lot 1 of the Kel-Mar Strip Subdivision, and particularly to the site grading and drainage certification. This letter is on behalf of the developer/owner —.John Mason. Regarding the concrete curbed channel; we shot elevations on the new portions of the pan, and have included those elevations, as well as the as built grade for that concrete pan extension shown in the attached exhibit. It is slightly flatter than the original design but is steeper than the existing pan section (2.7% new, 1.6% existing). The riprap at the end of the channel is in place. Essentially, the channel was installed per the intent of the design. We also looked at the water quality pond and outlet works along the north side of the building. The weir and orifice plate are installed per the approved design. The owner/developer extended a berm along the north side of the "pond" to allow for ponding, also allowing for runoff from the west to get into the pond. Again, this pond should perform, providing a water quality mechanism for stormwater runoff. Please call if you have any questions. rely Roger A Curtiss, P.E. Project ManagerNice UTILITY PLANS FOR MASON PAWN LOT 1 OF KEL-MAR STRIP SUBDIVISION LOCATED IN THE SOUTHWEST QUARTER OF SECTION 12, TOWNSHIP 6 NORTH RANGE 69 WEST OF THE 6th P.M., CITY OF FORT COLLINS, COUNTY OF LARIMER, STATE OF COLORADO FEBRUARY 2009 RIM I ri 1 Z11VVICINITY MAP SCALE: 1" = 2000' CONTACT INFORMATION PROJECT TEAM OWNER/APPLICANT CONTRACTOR M. Poem rn CeHIUIMIioo, I . J. Mew Jeff&wpldt 3761 SMasho St 12N S College Ave Fan Collins, Colorado 80525 Port Collme, Caloledo 80524 (970)282.72% (970)212-1171 ENGINEER/SURVEY Northern EngineWMB ServicaA Inc. NORTHERN Bodc-RI ENGINEERING 200 S College Ave Peel Coax, Calonde 80524 (9T0)WA158 GENERAL NOTES: Getmnl ConaVuOtlon Note W1 Olmugh 18, 20 MmuOh 39, and 42 Mmugh 40 v lieled In Append E-1 aIOW Larimor County Unhan Ana Saa1 Slandnds (LCUASS) shall apply and ho mlawed WNM pmlerl INDEMNIFICATION STATEMENT: These Plvm hero b roNaWb by the Cly vl Fqt CMllne m, .—e P, an The;Z daw net 1. l WonoBPlly by me reYfvoM departman4 INe City EndnWr, a the city or Fart Cdllns for o Ivy and aaraeclnaW or the adwiallana FortNarmwe, Me mIW dose not imply Mot camtilies of items an Me door we Ib nnol auantiilw ravubed. The nwL. mdI nor be Pan.w.d rw any wa.an .. aacWtahPe or rMPndw nWMelbeNy by Me City PI FM Colin. Iw eeiu nand WanIILIn r time Moen Mel may be .eadr.a eunng the ce "aden Phvn. CERTIFICATION STATEMENT I ban a1Rm that Men Rnd Wnetruclam doned1r Awe dWwed anew my -- / M canacl anal Nh dl acphe City ppCape. an State FM of I/ cda.aep Wandard. en I Hat", e / 7y,'wly. Mal am�Iho, and .Wle Ia Me v y an all design. d .ache \ \ a "at I an those mat new natal an mw dma V O ELJ S ORNN MMINOIE MM El£V.. 5OM.IV 2A• RCP (W) INVERT - 501 24 RCP (E) INVERT - =.Is' or EKISTNC STORMUNE STORM MANHOLE RIM ELEV. - 502e.46' te• CMP (N) INVERT - SOM.2T O 0 15' UTIUTY EASEMENT BY SEPARATE DOCUMENT AUDI EASTERN MT REOEPTKKN N0. NBPIMVE _ 1- _ L 11II t MOOD w�U. .W �. 1 \ _ \ \ • I I EIOSIMC 2P�RLP 'I FI 1111 11 III II I I I;1 I VR. - r)005111 stop \ - --- d A R ELEV. - =7 02 ' 4 I OF AS E C EDGE: Cf ASPMAIT 1 STORY BRICK I WOOD GARAGE LOT KELMAR STRIP OBOE S COLLEGE AVENUC FINISH FLOOR EI.EV, - 501 SAW , I / NSTALLATI(M OF WV OIR AND PAR TEAR NORTH END OF :KISTING BERM ,' UTILITY EASEMENT BY EPARATE DOCUMENT tcC MON NO. '.5- OF ADMTIGNAL ROW BY SEPARATE DOCUMENT NECEPTON NO. '.x Bob, TO BE COMPACTED SUFFICIENT TO ULOW FENCE POST ;DNSTRucnoN M SY2 CLASS FBI D50 - 2' THICKNESS - Ir RIPRAP To BE PACED UP THE BANK TO BE LEVEL MTh TOP OP FES Is rxlsnac CURSED cNANNfL. /-•Gres — - - I, - - - - - 107 R \ • Ri 1 WOLCURV EE 6 CHANNEL \ l / .518„AK- GB I9. Cf.CV . blO A EgST R EIEV - Sn].T OMTHASGRADED SERUM of THIS AREA A FOR WATER QUALITY AND SHALL mED WNITH OUAUTY WEIR PER OE ON THIS SHEET - SEE NOR 7 SCALE: ® NORTH ]0 0 ]0 a, 90 1-, INFEET ) I MM . ]0 K Is•02"d' WATER oUAUTY PLATE SEE p' DETALL THIS SHEET Uri eT 2' SLAT L SLUAA IN CONCRETE N FRONT M PLATE T 2- ]• 7 If GIficaaa HOLES O 4' 0.0 R-ROWS 0. HOLES FGR re EXPAN ION BOLTS g' BREAK IN WALL EMBEDDED 2• INTO i• MM. MICA BEHIND PLATE CONCRETE WALL O VANI2ED STEEL Td' L 12. O.C. MIN, PLATE MADE AT r ly}} VLLn FlB07M OTTM OP WALL' OF PLATE AND D INVERT L BDROY OF OPAL ELEVARDN JLABI• FRONT F KAT IN FRONT OF PULE r 1 WATER QUALITY WEIR DETAIL WATER QUALITY PLATE DETAIL N...-- N. . CONCRETE SHALL BE 3500 PS O 28 DAYS CONSTRUCTION NOTES: 1. RIPRAP SHALL BE PLACED IN ACCORDANCE MTH CITY OF FORT CONS DETAILS 1 TOPOGRAPHY SHOW ON THE RAN IS ED BASON TOPOGRAPHIC SURVEY BY NORTHERN ENGINEERING SEANCES - DATED n-o5-oe. 1 HEIGHT OF CURB ON SOUTH SIDE OF THE CURBED CHANNEL TO BE MAXWI r. TM OF GIRB ON THE SOUTH SIDE SHAUL BE LOWER THAN EXISTING GRADE AT THE PROKIRTY LINE A. MAXIMUM ALLOWABLE SLOPE FR SOUTH PROPERTY UK IS 4:1. S HEIGHT OF CURB ON NORTH SIDE OF ME CURSED CHANNEL TO BE I'. B. WATER OUAUTY POND SHALL BE AESUIIT AT END OF CONSTitUCTION AND CERTnE0 BY PROFESSIONAL ENGINEER PRIM TO ISSUANCE OF CERTIFICATE OF OCCUPANCY. LEGEND: ePrLm. MIM ��_ y _ L`ueT... cprtouv eAanxewartR C zor. EVA4A.. ® reaT.Kne eoA EAamo KT. oaNx , A L9 INXE - V•d EFalXq rpCE MAN • NInT RE -.�--• [xama M,N. rl£CTRK Oslaw Ae..N..F . nRWYa NI.w pg wAlrm ruvE ------------- ..ITobybaa rrwl rah Know what's bEaOW. �ga�ge� O M Lear ,ag,E„,Y wI„D•A,. Cell before you dig. •O Fu enD cernON O Rvrtul, sexEa w.N„ote e9.w.NAwMR O.aO0. ' B.IfG i� 21D r 6 Rs z� na.4_R, ohNK ws,N�'W'�w rm.4. ansYww em CROSS-SECTION A -A SCALE 1' - 5' City of Port Collins, Colorado UTILITY PLAN APPROVAL APPR°VEO: ly D near Mee CHECKED BY: Rats a Whealor UWILy Isle CHECKED BY: n�rmwa r�Y— Date CHECKED 8t —T.YTI� En•^r.a-Lr mte CHECKED SY - �YaE��r Lrs CHECKED BY: a.m a 91,ra,I DR1 OI 1 Sheets No Text n 6 'Non