Loading...
HomeMy WebLinkAboutA022 - Council Action Form dated October 22, 2002 - Item 30b Item # 3© Date: October 22, 2002 COUNCIL ACTION FORM SUBJECT: APPROVE/REJECT REQUEST FOR CITY PARTICIPATION IN STORM SEWER WORK IN CONJUNCTION WITH THE DAYTON INDUSTRIAL PARK SUBDIVISION BACKGROUND: Council referred a request from Jon Chester for the City to participate in the underground piping of an open drainage way along the north side pf their proposed Dayton Industrial Park Subdivision. The drainage way carries stormwater runoff from the north and east. The drainage way has been in existence when the area was strictly agricultural and prior to any area development. As development took place, the drainage from the east was controlled through the use of a detention pond such that the runoff rate was not increased by the development up stream. The outlet from the detention pond was placed into the existing drainage way. The attached grading plan for the area shows the drainage way. The Developers of the subdivision, the Armstrong Family Trust, believe that the City should participate in the drainage way enclosure, expected to cost about $30,000, because a portion of the runoff is coming from the City-controlled detention basin. The enclosure of the drainage way will benefit the Developers since more of Lot 3 will be buildable. Because the proposed drainage way enclosure only deals with private property, no public gain is made by enclosing the drainage way. Even if the drainage way is enclosed, a swale must be incorporated so that stormwater runoff flows of larger magnitudes than the pipe capacity can be handled. It is important that any work that is done to the drainage way does not further impact adjoining properties. At the point of design of whatever improvements are going to be accomplished, staff will insure that the property owners to the north are not impacted. Over time, the Armstrong Family Trust has moved the drainage way north. Originally the drainage connected directly with a 48" culvert under Dayton Avenue. Since the Developers have modified the drainage way previously, it should remain their responsibility to continue to deal with it. ALTERNATIVES: 1. Reject the request for City participation in the underground piping and modifications to the drainage way in the Dayton Industrial Park Subdivision. 2. Approve the request for City participation not to exceed one-half of the cost of the piping materials. This potential cost (approximately $10,000) is not budgeted. MANAGER'S RECOMMENDED ACTION: Because there is no public gain from City participation in the drainage way piping proposal, it is recommended by the City Manager that the City Council accept alternative number one above and reject the request for City participation in the underground piping and modifications to the drainage way in the Dayton Industrial Park Subdivision. COUNCIL ACTION: SeUTL". AVEN1JE—­7 NWWOOIE"IAW _—--7E: — = NWOO'00'E 1304.75 IOO.O — NW00'0O-E\003.90' �0 ti N -z P ie -Uft kC SNKF 77 771:_ Ar 1 H_ 01 :L 4�- > A 0- j J 247'X it c 4L 4 ' 2,T.1 rp- NORTH 100.0, 66- o,�o -iz x T C, -7----- 0 206-' ­LWA 262.2 "MM 101-Iffl. P24 -4 CD CD1 SO'29'W 7;A7727,77) I%.O�(P) SW26!23"W 755=� z T!, o- -3 Z, 1 111 �Z, 2. z 0 I . 9.3 M;0 0 191 (T) .*2- ­ 3 0 A 0 z �*3 Lh Z V &Z 10 % �8 Jig z =,AU > MO 52.zm-p o a- 3 -0 g a oazm .9 U5, RZ R. 2.1 a nk o 2; Q .3.. 1.2 i -eji 5, 2 2 311 g.;-� ILI �q 5—0. g:6, si 8> cz.. 3 1 0- 41 S.'.1 10 al-5. J*. 311 5 3",o 0- &..31_1�jll 2��., ��-R Wa'z 'a. i a 2'. K 1. _P P-5i k * �(A g." .2, R.— giv 322. Pf 0 NORTH X 5* 3 2. �oV��� �o �p� > z a Ro.1 O's 01. s. ­23 31 :Till 19' r iTH. a'- g -0 n a j.a 53� !1§ 3z S. 0 . g :t. , . J 0. 3 04 11* a I �OZ -2� o o c fl: q=9 1s3 3 Wa 3T! 7 I S I I I Preliminary Grading Plan A�hftM Dayton Industrial Park Subdivision 340 South Dayton Avenue Ames, Iowa Laft pe ENGINEERING PLUS, INC. �11 Owner/Developer:Max N.Armstrong Family Trust 546Q282ndStreet Ames,lowa50010 A-•I*" 616M400 PAX616,7354M