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HomeMy WebLinkAboutPALMER OFFICE BUILDING REMODEL - PDP/FDP - 22-97 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTIr- /`uj 5 W J j I I II 1 I I I The M fS Wird"MM I i ----- -- Tract: Observatory Hts. 3 6 3 G H14 - I � II � Yarmroaq � ! I I � Ca�x�nj �armcapi.O CO rc.n.i•r ` ai //�'• ' n.,�-,ng amr*bw nWap W roman _ I New Palmer Office ' Remodel x , �e rwo ea s ng Frk1h0 �'•�,� I meet Gwerea �II 1 1 I1 1 1 1 baenia i,Ar udllaatsa -;wrAde0 prs� I I I I I I I I I I MtIll Palmer Flowers (eanswl) I� I r�JI� I I J MW iai>sapr edam 3700 7e .. �I9�aG Aran ea,]GI• �•eA to "r - maKa narr�m I xa :o ec �. Yea �-9II:I 1 j51; , O I I III I i �__ ,•�. �aar�pe Nana rA�Mj paR•ry d �'r -- Ca:ac�ro .rY wa C i��ro w rNnaY+ 1 111 Total tx,stirz, Parkins II,t5 total I`cw ParKmg _ Site Plan rORTM �Yleti. 1 I 1 f'i 7 to Fart* 25' 1 wear x+xj eccc rVw e-.r.pm9 oilnr? :Irc +a:catt� — — eaix,nrj ro / — — tYf �d clew ,nne areero • aa•b G aiaewa* 1 I r Exeary arcs .y'aM to remain I A 2 � j Cxietlrq ;amcap�ro I W remain ! � Ca�eGva wC !. �,aewa5 :O remai i 1 f1 The erosion control collateral should be the minimum of $1000. I believe that no further drainage designs or plans are necessary for this proposed remodel. Sincerely, s 45©2 Phillip I. Robinson, P.E. & L.S. Iffy cc: Mr. Roger Thorp TEWART SSOCIATE S 8� S Consulting Engineers and Surveyors August 19, 1997 Mr. Basil Hamdan Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, CO 80522 Dear Basil, re: Palmer Office Remodel - 3636 and 3700 S. College Ave. Mr. Roger Thorp of the Thorp Associates, Architects, requested that I provide an analysis of the effect of the proposed remodel on the storm drainage of this site. The proposed remodel includes the east portion of the existing building at 3636 S. College Ave. and the existing parking lot located directly east of 3636 S. College Ave. Also, a remodel of the existing parking lot located east of the Palmer Florist building at 3700 S. College Ave. is proposed. I have attached a copy of the architect's site plan showing the proposed remodel areas. There will be some relocation of landscaped parking lot islands, and the rear portion of the existing building at 3700 S. College Ave. will be removed and replaced with parking, but the amount of hardsurface remains approximately the same. There are two existing detention ponding areas on the site. The proposed remodel will not adversely effect the function of these ponds. It is planned to lower the bottom of the east part of the pond at 3636 N. College Ave. This is being done so that the parking lot will not be so steep from the east edge to the existing center pan. The capacity of the pond will be increased slightly, but not enough to make a noticeable difference in the high water lime. The existing detention pond at 3700 S. College Ave. was designed in 1987 by Stewart and Associates, and the existing detention pond at 3636 S. College Ave. was designed in 1995 by WESTEC. Copies of the drainage reports showing these designs are included in this report. The pond at 3636 S. College Ave. is referred to as `?ond A" in the WESTEC report. During the parking lot construction, rainfall erosion will be controlled by placing a sediment trap over the detention pond outlets. James H. Stewart and Associates, Inc. 103 S. Meldrum Street P.O. Box 429 - Ft. Collins, CO 80522 970/482-9331 Fax 970/482-9382 DRAINAGE REPORT FOR PALMER OFFICE REMODEL AT 3636 AND 3700 S. COLLEGE AVENUE PREPARED FOR PALMER HOUSE FLORIST do THORP ASSOCIATES - ARCHITECTS AUGUST 189 1997 PREPARED BY STEWART & ASSOCIATES, INC. 103 SOUTH MELDRUM STREET FORT COLLINS, COLORADO 80521 970/482-9331