BOARD OF COUNTY COMMISSIONERS SARPY COUNTY, NEBRASKA

Transcription

1 BOARD OF COUNTY COMMSSONERS SARPY COUNTY, NEBRASKA RESOLUTON AUTHORZNG THE CHARMAN TO SGN THE PAPO-MSSOUR NATURAL RESOURCES DSTRCT (NRD) STORMWATER BEST MANAGEMENT PRACTCES PROGRAM GRANT WHEREAS, pursuant to Neb. Rev. Stat (6) (Reissue 27), the County has the power to do all acts in relation to the concerns of the County necessary to the exercise of its corporate powers; and, WHEREAS, pursuant to Neb. Rev. Stat (Reissue 27), the powers of the County as a body are exercised by the County Board; and, WHEREAS, a Papio-Missouri NRD Grant is available to Sarpy County; and, WHEREAS, Sarpy County will request funding to construct a rain garden on the comer of Golden Gate Drive and East Gold Coast Road; and, WHEREAS, the grantor requires the signature ofthe Chairman; and, WHEREAS, Sarpy County is committed to and supports the project to construct a rain garden with funding from the Papio-Missouri NRD; and; NOW, THEREFORE, BE T RESOLVED, By the Sarpy County Board of Commissioners that the Chairman is hereby authorized to sign the application for the Papio-Missouri NRD grant. The above Resolution was approved by a vote of the Sarpy County Board of Commissioners at a public meeting duly held in accordance with applicable law on the 13+'-- day of VY\a..fcb-.,212. Sarpy County Board Chairman

2 _._--_.._--- _ _. Papio-Missouri River Natural Resources District Stormwater Grant Rain Garden SECTON. BUDGET SUMMARY Category Requested Amount Match Share Total Project Cost A- Personnel B_ Consultants/Contracts $1, $1, $2, C. Travel D. Supplies/ Operating Expenses E. Equipment F. Other Costs TOTAL AMOUNT $1, $1, $2, % Contribution 5% 5% 1% **Match will be met through funding from the 21 Storm water Management Program (SWMP) Grant awarded to Sarpy County through the Nebraska Department of Environmental Quality (NDEQ).

3 17.41 STORMWATER BEST MANAGEMENT PRACTCES PROGRAM PAPD-MSSOUR( RVER NATURAL RESOURCES DSTRCT 891 S. \54th Street Om.h. NE SPECAL PROJECT REQUEST APPLCATON 1. DATE: March 13, PROJECT NAME Sarpy County Rain Garden Project 3. PROJECT SPONSOR: Sarpy County ADDRESS: 121 Golden Gate Drive Papillion; NE CONTACT PERSON: Lisa A. Haire TTLE: Sarpy County Grant Coordinator 5. EMAL AND PHONE: PROJECT LOCATON: The Sarpy County Rain Garden Project will be located on the corner of Golden Gate Drive and East Gold Coast Road in Papillion, Nebraska on Sarpy County property. The project will be situated on the northeast corner of the Sarpy County Courthouse and the Administration overflow parking lot (attachment 1, proposed Rain Garden #1). This particular area accumulates stormwater and stormwater runoff from impervious surfaces following rainfall events and drains through a nearby outlet into the Municipal Separate Storm Sewer System (MS4). 7. DESCRPTON OF STORMWATER BEST MANAGEMENT PRACTCE AND HOW T WLL BE NCORPORATED N THE PROJECT: Sarpy County will incorporate Low mpact Development (LD) water quality measures through the implementation of a rain garden located on the corner of Golden Gate Drive and East Gold Coast Road in Papillion, Nebraska. Rain gard'ens are an example of a low impact development (LD) approach to storm water management. The LD approach retains and infiltrates rainfall on-site, emphasizing site designing and planning techniques that mimic the natural infiltrationbased, groundwater-driven hydrology of our historic landscape ( Traditionally, pollutants accumulate on paved surfaces and are washed into the MS4 at concentrated levels during a rainfall event. The primary purpose of a rain garden is to store the first few inches of rain helping water infiltrate into the ground and limiting runoff pollutants which normally run through an outlet, draining into the MS4 and continuing downstream into creeks, onds, lakes, and rivers. Rain gardens hel to reduce this ouution by holding and

4 filtering the water. Loose, absorbent soil collects the rainwater running off streets and parking lots. Native plants help absorb water, sand and soil filter out pollutants helping to naturally manage stormwater runoff. According to the National Pollutant Discharge Elimination System's (NPDES) menu of Best Management Practices (BMP's), "bio-retention (rain gardens) can be used in parking areas to collect and treat stormwater" ( The Environmental Protection Agency (EPA) lists rain gardens as a Low mpact Development (LD) BMP strategy because "they restore the natural, pre-developed ability of an urban site to absorb stormwater, mimicking the natural hydrology of the area by capturing and managing storm water on-site" ( Additionally, rain gardens recharge groundwater, keep rainwater on the property, remove standing water naturally, reduce mosquito breeding, and beautify the landscape. Sarpy County will work with a contractor to construct a rain garden on the northeast corner of the County Courthouse and Administration overflow parking lot. This area accumulates and holds stormwater runoff following rainfall events eventually draining. into the MS4 through a nearby outlet (attachments 2-5). Constructing a rain garden in this area will assist in capturing the rainfall and runoff from nearby impervious surfaces limiting pollutants from draining into the MS4. The Sarpy County rain garden will be landscaped with perennial flowers and native vegetation which will absorb rainfall, filtering pollutants that currently run across the parking lot. The rain garden will be a natural way to capture, filter, and hold rainfall on site helping protect fragile water resources downstream (attachments 6 and 7). 9. TOTAL ESTMATED COST: $ 2, (see attachment 8 for cost breakdown and 9 for schedule) 1. COST SHARE REQUESTED: ]1. SGNATURErrTLE: FORM 17.41

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10 <!\.. '\ GENERAl NOTES: 1. CONTRACTOR SHALL FELD VERFY ALL DMENSONS. 2. CONTRACTOR SHALL NOTFY THE NEBRASKA ONE.cALL SYSTEM BEFORE CONSTRUCTON ACTVTES BEGN. NEBRASKA DGGERS HOTLNE: --- HOO OR CONTRACTOR SHALL PROTECT ALL EXSTNG STORM. SEWER NLETS, MANHOLES AND PPNG DURNG.m CONSTRUCTON OF RAN GARDEN. \. E-i Z ffi u,::c E-i E-i,::C ".. ' i,, \ ; '. '.,, EXSTNG 1. EXSTNG 24 GRATE NLET, RM ELEV= 193.:. 2. EXSTNG 12 STORM SEWER PPE. 3. EXSTNG 12 RCP FLARED END SECTON, RM ELEV = 192.5'. 4. EXSTNG 15 STORM SEWER PPE. 5. EXSTNG STORM SEWER CURB NLET. 6. EXSTNG DRAW DOWN STRUCTURE, RM ELEV = 192.'. 7. PARKNG LOT., 8. EXSTNG CONCRETE SDEWALK. 9. EDGE OF ROADWAY. 1. PROPOSED RAN GARDEN NO.1, APPROXMATE DMENSONS: 85' BY 18',162 SF. SEE SHEET C-5 FOR VEGETATON PlAN. 15 STORM SEWER t 1 f! «;... /1 : \ ({) ( 9 c: ({) <: ill EXSTNG 12 STORM SEWER ROADWAY CENTERLNE RAN GARD NO.1 DAAWlHG NU...

11 RAN GARDEN NO. 1 PlANTNG SCHEDULE HATCH TYPE en w h i= -i=. < :Em tu cc!j iii ig -' -... => gg fa8 z O a:!i C3 z 1. EXSTNG 24' GRATE NLET, RM ELEV = 193.'. / 2. EXSTNG 12' " STORM SEWER PPE. 3. EXSTNG 12' " RCP FLARED END SECTON, RM ELEV = 192.5'. 4. EXSTNG 15"" STORM SEWER PPE. 5. EXSTNG DRAW DOWN STRUCTURE, RM ELEV = 192.'. 6. PARKNG LOT. l t f.. N -1 1' =' C-5...

12 Attachment 8 Sarpy County Rain Garden Proposed Project Estimated Costs for Component Parts TEM DESCRPTON QTY UNT UNT EXTENDED COST COST 1 Excavation 3 CY $11.98 $3, mport Sandy Loam 24 CY $35.86 $8,66.4 Fill 3 mport Grave (No.2 3 CY $65.75 $1,972.5 Stone) 4 Under-Drain Piping 13 LF $1.79 $232.7 (6" Slotted HOPE) 5 Fittings (3-45degree 6 Each $ elbows and 2-9 degree elbows) 6 Vegetation 16 SF $2.39 $3, Connection to Existing 1 Each $1, $1, Area Drain TOTAL $2,

13 ATACHMENT9 MPLEMENTATON SCHEDULE SARPY COUNTY RAN GARDEN PROJECT Sarpy County notified of award from Papio-Missouri NRD: June 212 Sarpy County Purchasing Department releases RFP: Advertisement: Prebid Meeting: Open Bids: Award Bid: Contract Documents Completed: Project Start: Project Completion: July 9,212 July 18-July 25, 212 July 31, 212 August 9, 212 August 14, 212 August 24, 212 September 3, 212 September 21, 212

14 l Sarpy County Board of Commissioners 121 GOLDEN GATE DRVE PAPLLON, NE ADMNSTRATOR Mark Wayne DEPUTY ADMNSTRATOR Scott Bovick FSCAL ADMN'/PURCHASNG AGT. Brian Hanson COMMSSONERS Rusty Hike District 1 Jim Thompson District 2 Tom Richards District 3 Jim Nekuda District 4 Jim Warren District 5 MEMO TO: Sarpy County Board of Commissioners FROM: Lisa A. Haire RE: Papio-Missouri Natural Resources District Stormwater Grant On March 13,212 the County Board will be asked to authorize the Chairman to sign the Papio-Missouri Natural Resources District (NRD) Stormwater Best Management Practices Program grant application. The application requests $], from the Papio-Missouri NRD for a rain garden which will be located on the northeast comer of the Courthouse overflow parking lot (corner of Golden Gate Drive and East Gold Coast Road). The grant requires a $1, match which will be met with funds from Sarpy County's Annual Stormwater Management Program (SWMP) Grant awarded to Sarpy County from the Nebraska Department of Environmental Quality (NDEQ). Please contact myself or Scott Bovick with any questions. March 9, 212 Lisa A. Haire cc: Mark Wayne Brian Hanson Scott Bovick Ross Richards Bruce Fountain Deb Houghtaling