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Home My WebLink AboutGrading Plans - 01/06/2020 (3)1612 Prospect Lane Lot 70 Arthur C Sheely 3rd Filing Les Crawford P.E. Site Development Solutions Dan Mogen [via email: dmogen@fcgov.com] 700 Wood Street Fort Collins, CO 80521 B1916164 Plan & memo accepted and permit released 1/6/2020 DJM November 20, 2019 UPDATED December 16, 2019 RE: Residential Grading/Drainage Permit Application for 1612 Prospect Lane Dan, This project is the addition of an attached garage and driveway to the existing home at 1612 Prospect Lane. The general location is two blocks south of Prospect Road which is the southern boundary of the CSU campus. Attached is the CIVIL PLAN showing the existing and proposed grading with contours and spot elevations. Flow arrows demonstrate the general direction of surFace runoff away from the structures filterinq through landscaping & qrassed areas and towards the nearest curb & gutter in the street. The property is an existing home on the northeast corner of Prospect Lane and Juniper Lane. Runoff at each lot line flows at 1% to 2% through landscaping & qrassed areas toward the adjacent street. Then flows are conveyed by the curb and gutter draining counterclockwise around the intersection; flowing south on Prospect Lane then east on Juniper Lane. The ultimate collection point is the City Storm Drainage system on Prospect Road near South Witcomb Street. A copy of the City Drainage Plan shows the ultimate discharge is to the Poudre River. Existing and proposed downspouts are located at the corners of the structure and all discharge is away from the structure through landscaping & grassed areas. The space between the existing garage and the new addition has been covered with a wide concrete sidewalk. The concrete sidewalk slopes away from the structures with a v-pan near the center. The v-pan slopes to the south at 1% to discharge gently on to the existing grassed lawn before filterinq throuqh landscapinq & qrassed areas. The net impervious area is increased bv 1,870 sf. The maximum allowed increase is 5,000 sf. Water Quality is mitigated by most runoff filtering throuqh adjacent landscapinq & grassed slopes. No detention is provided due to the site's small area. Please accept these documents as the completed application for a Residential Grading and Storm Drainage Permit. Les Crawford PE IN OLD TOWN 301 HOWE STREET #2211 FORT COLLINS, CO 80521 970-773-0610 Les@ LesCrawford PE.com www.LesCrawfordPE.com 1612 Prospect Lane CHANGES IN IMPERVIOUS AREAS Remove SW -56 sf New SW 98 sf New Drive 761 sf New Rear SW 77 sf Net New SW 880 sf New Garage + Entry 990 sf New Impervious 1,870 sf MASTER DRAINAGE BASIN : OLD TOWN MAX ALLOWED NEW IMPERVIOUS: 5,000 SF ACCEPTABLE NOTE: THESE ARE NOT CONSTRUCTION QUANTITIES Pro�y Address: 1612 Prospect Lane Proqertv Owners: Craig Spooner & Susan McGoldrick Owner's Phone: 970-310-5010 General Contractor: Sol Structures Contact: Eric Newcomber 970-443-3233 Parcel No: 97232-05-070 Legal Descriqtion: LOT 70, ARTHUR C SHEELY 3RD, FTC Zonina District: Subdivision: Neiahborhood: Setbacks: Front Yard - Rear Yard - Side Yard - Lot Size: RL 11673 - SHEELEY, ARTHUR C 9722 30 Feet (per subdivision plat) 15 Feet 7 .5 Feet (per subdivision plat) 15 Feet at street facing side yard 11,098 SF Densitv: 1/3 x Lot Area (plus first 720 SF of attached garage) Allowable Total Floor Area: 3,699 SF (plus first 720 sf of attached garage) Actual Floor Area: Existing First Floor: First Floor Entry Addition: Existing Garage (detached): New Exercise Room Addition New Attached Garaae*: Total : 1,634 SF 90 SF 660 SF (20'x33') : 350 SF 550 SF 2,474 SF *First 720 SF of attached garage doesn't count against the total allowable area Remaining allowable area: 3,699 SF- 2,474 SF+ 550 SF= 1,775 SF Maximum Buildina Height : � Actual Buildina Heiaht: 14'-6" 0�90- LL (OL6) wo�'3dP�oyne��sa�@'� sa'7 O� SNIllO� liJO� 1S N30NIl Z4Z � V U �JNIWOAM, Htllfl . VWOHtllNO. V10NV4 Hl`JON W� Z b'NStl2J93N.tlNtl1NOW.StlSNb'N.Odtlil0�0� O Q W SNOIlf1lOS 1N3WdO13�30 311S O O� - 3d pao�nnea� sal _ N �� LL � �Nd� ��diNnr � � J O > � U U s �" 3` � G��i . �� '� , �:�, j�•' ...... � .F� ' � nrca�xusira \�'�V� � � �� \_- m:or �' i. �'."_' � � , ,, �� __� -� I! �� o,sa�=.n._ � a�s..�_ ,, ��; .n� _ � � �_ � I , ' e.,= . � �.,.. �, f� . ; _ ... ,,� � i �� r i, { _ , ,'� � — � � �. � � � � C — b, — � .-� — _ • l� — � I . � o_� II o I_o 00 0 0 _ �I� \� \ \ , � o� � 5 _ ,`� $ g $$ __ eP hniry �, r.� �e _ 8 ^ _ �x� _ � _I _ .dt. .p - „,f� ��I��NI �� 'a � �.:I � �¢� � � og� -�e� mo'„',�.V'8 �g`Y ~ �m �� s �m aQ� �� o� e H NN NN m'` oo 'o� � a �� z �� ¢=�o�o 3rc \�\ � z �Q � �U W r�^ I v! � � � I �