Figure 1 Cypress Street Study Area Location Map

Size: px
Start display at page:

Download "Figure 1 Cypress Street Study Area Location Map"

Transcription

1 July 20, 2016 TO: FROM: Jim Massarelli Director of Engineering Jeff Julkowski, PE Michael Burke, PE SUBJECT: Cypress Street Study Area Stormwater Analysis (CBBEL Project No ) At the request of the Village of Arlington Heights (Village), Christopher B. Burke Engineering, Ltd. (CBBEL) has performed a detailed review and stormwater analysis of the flooding problem within the Cypress Street study area (Figure 1) in Arlington Heights. CBBEL has reviewed a previous study and corresponding modeling prepared by Brown and Caldwell (B&C) in July The B&C study report highlighted known flooding areas as well as storm sewer deficiencies revealed from their XPSWMM modeling analysis. The overall goal of their study was to develop an improvement alternative to provide 10-year flood protection for the entire Cypress Street study area. CBBEL has been directed to update and revise this analysis to provide 100-year flood protection in the known critical flooding areas. Figure 1 Cypress Street Study Area Location Map 1

2 Cypress Street Study Area Drainage An assessment of the existing storm sewer system and overland flow was performed using the Brown and Caldwell existing conditions XPSWMM model and Cook County 1-foot aerial topography. The sewer data in the Village s GIS database generally matched the XPSWMM model, although some areas had discrepancies with the sewer diameters. Subsequent to the initial modeling analysis, a utility survey was completed to verify the sizes and inverts from the B&C XPSWMM model. The surveying verified the sewer sizes and alignments, and showed the inverts were generally very close to those in the B&C model. One exception was at the point of connection from the Cypress Street basin to the Arlington Heights Road storm sewer, which is higher than shown in the B&C model. Stormwater drainage in the Cypress Street study area generally flows from west to east. The storm sewer system has three main trunk sewers draining towards Arlington Heights Road on White Oak St and Cypress St. A 24-inch trunk sewer on White Oak Street drains to a 36- inch storm sewer on Arlington Heights Road which continues north. There are two trunk sewers, a 36-inch and a 24-inch that flow east along Cypress Street, as shown on Figure 2. The main outfall for these two storm sewers is a 36-inch pipe that briefly heads north along Arlington Heights Road and continues east through a strip mall. One section of 36-inch pipe along this route is raised approximately 4.5 feet higher than the upstream and downstream pipes, likely to avoid utility conflicts. This raised pipe creates an inefficient hydraulic design and results in permanent storage of stormwater in the sewer system. To alleviate this problem the Village installed a 10-inch storm sewer down Cypress Street east of Arlington Heights road to allow the system to drain following a storm event. During any significant rainfall, high flows in the 36-inch Cypress Street storm sewer can access the 2.6 acre-foot Cypress Street detention basin at the northwest corner of Cypress Street and Arlington Heights Road through a diversion storm sewer. This basin drains to the 54-inch Arlington Heights Road storm sewer to the east. We understand that this basin has previously exceeded its capacity and overflows onto Cypress Street during large storm events. Other flood areas upstream in the study area are the result of inadequate conveyance and are discussed in the existing conditions modeling section. 2

3 Figure 2 Cypress Street Drainage Map (from Village GIS) Brown and Caldwell Study As part of the B&C study, an XPSWMM analysis of the existing and proposed conditions was performed. Upon reviewing the existing conditions XPSWMM model, CBBEL made the following observations: 91 subbasins with a total drainage area of approximately 200 acres. The 24-hour design storm was applied with an SCS Type II distribution No critical duration analysis was performed Existing depressional street and rear-yard storage was not explicitly modeled Only 1-foot of road flooding was allowed in selected areas An assessment of the B&C model found that it does not have the level of detail required to accurately assess the depth and limits of overland flooding. Flooding was simply defined as 3

4 the hydraulic grade line (HGL) exceeding the rim elevation. This method is acceptable assuming the end goal is to provide a 10-year level of protection provided within the storm sewers for the entire study area. The next section describes how CBBEL updated the overland flow network in the B&C to more accurately describe the existing conditions flood problem. In total, the B&C study proposed four alternatives in their report, ranging from an $111,000 project to lower a section of 36-inch storm sewer, to a $11.5 million project to overhaul much of the existing storm sewer system within the study area, expand the detention basin at the northwest corner of Cypress Street and Arlington Heights Road, and construct a new lift station. CBBEL has enhanced the existing conditions model and made revisions to assess the extent of flooding for the 100-year storm event. CBBEL Existing Conditions Analysis This section describes CBBEL s existing conditions analysis of the 100-year storm event, and the changes made to the B&C model to facilitate our analysis. CBBEL reviewed the subbasin delineations shown in Figure A-1 of the B&C report and compared it to the Cook County 1- foot aerial topography. In general, the subbasin delineations appeared to be accurate, but a more detailed review is recommended if this project moves forward to a design phase. The hydrology in the B&C analysis used SCS methodology with calculated Curve Numbers (CN) and Time of Concentration (Tc) unique to each subbasin. These hydrologic parameters were reasonable based on a review of the land use and topography. CBBEL did not make any changes to the subbasin areas and hydrologic parameters developed in the B&C study. As mentioned previously, the sewer sizes and inverts in the CBBEL analysis are based upon the B&C model. A CBBEL utility survey verified the sewer sizes and alignments shown in the B&C model. Sewer inverts were also verified, and most were shown to be very close to the elevations in the B&C model. The Arlington Heights Road storm sewer was found by the CBBEL survey to be approximately 0.6 higher than the B&C model showed, and the pond outfall was found to be 1.5 higher. It also showed minor changes to the storm sewer routing in the area of the Cypress Street basin outfall to the Arlington Heights Road storm sewer. Based on the survey, it appears the 54 storm sewer on Arlington Heights Road turns west toward the basin to accept the outfall sewer, and a 36 storm line from the south appears either blind connects to the 54 or has a buried manhole. The 36 line shown in the Village s GIS was not located in any of the surveyed manholes on Arlington Heights Road. Figure 3 shows a revision to the Village s GIS data based on the CBBEL survey. The CBBEL XPSWMM model was based upon Figure 3: 4

5 Figure 3 Updated Cypress Street Drainage Map (from Field Survey and Village GIS) The B&C study used an SCS Type II rainfall distribution with a 24-hour storm duration in its XP-SWMM modeling. The SCS Type II distribution is commonly used throughout the country, however it can be very conservative in that it applies the majority of the 24-hour rainfall depth within a one hour time period. In the Chicago region, a more commonly accepted methodology uses the Huff rainfall distributions, which are a set of four distributions developed specifically for northeastern Illinois that change with different storm durations. A critical duration analysis should then be performed to determine the storm duration that produces the highest flood elevations and overland flow rates throughout the study area. The critical duration for the Cypress Street Study Area was determined to be the 2-hour storm. In general, water surface elevations (WSEL) throughout the Cypress St study area were lowered for a given storm frequency when using the Huff distribution compared with the SCS Type II distribution. In our experience, using the Type II distribution is not unreasonable but is less accurate than the Huff distributions and may result in oversizing of project elements. We have based this updated study and its recommendations on the modeling completed with the Huff distributions. 5

6 Depressional flood storage was calculated and inputted into the XPSWMM model at three locations: Vail Avenue, the rear yards between Vail Avenue and Dunton Avenue, and on Dunton Avenue near Dunton School. Overland flow routes along streets were also added in areas where sewer surcharge occurred, but no overflow was previously defined. These changes to the overland flow network were required to accurately assess the depth and extent of flooding for the 100-year storm event as seen in Exhibit 1. Based on discussions with Village Staff, critical flood areas were identified and then verified by the existing conditions XPSWMM model. Table 1 describes these flood areas and the associated 100-year flooding. Flood Area Table 1 Existing Conditions Summary Table Low Elevation at ROW Boundary Modeled 100-Year Flood Elevation Flood Depth at ROW Boundary Highland Ave North of White Oak Vail Ave Depression White Oak St and Vail Ave Dunton Ave Depression White Oak St and Dunton Ave White Oak St and Evergreen Ave Cypress St South of Basin As seen in the table above, the low elevation at the right of way (ROW) line was provided and is based on a best estimate using Cook County 1-foot aerial topography. This elevation serves as a target elevation when developing the proposed 100-year improvement concept plan. The general objective for stormwater design within the Village is to provide a 10-year level of service in the storm sewers for conveyance, and a 100-year level of service with the combination of storm sewers and overland flow paths. The next section outlines an improvement concept to achieve the Village s overall goal of a 100-year level of service for the Cypress Street Study Area. CBBEL Proposed Conditions Analysis CBBEL developed one improvement concept plan which incorporates certain aspects of the alternatives proposed in the B&C study to prevent flooding for the 100-year storm event. The goal of the improvement concept is to provide 100-year flood reduction by storing all excess stormwater within Village ROW boundaries. The improvement concept which is shown in Exhibit 2 includes the following flood reduction measures: Expanded Cypress Street detention basin from 2.6 acre-feet to 30.2 acre-feet. Lower 24-inch outlet pipe from detention basin 1.5 feet to maximize basin volume while maintaining a gravity outfall. 6

7 Proposed new and replacement storm sewers to increase conveyance to the expanded detention basin. 4 high capacity inlet locations at critical locations to intercept overland flow. A summary of the resulting benefits from the proposed improvement concept plan is provided in Exhibit 3. In general, the overall concept of relief sewers and expanded detention storage are similar to the B&C concept. The CBBEL plan provides 100-year protection at a lower cost than B&C estimated for 10-year protection. Some of the differences between the two plans are described below. One difference is the design criteria and how it was applied. As mentioned previously, the B&C study was concerned only about the 10-year event and sized their storm sewers to eliminate any surface surcharge. They did not evaluate the 100-year event. Our plan does not eliminate 100-year flooding, instead street ponding is allowed within the right of way to minimize the required pipe sizes. Therefore, the difference between 10-year and 100-year design criteria is not as significant as it may initially appear. The B&C 10-year design may have kept 100-year ponding within the right of way, however it was never evaluated. One of the major difference between B&C alternatives and the CBBEL improvement concept is the route location of the proposed storm sewers. Alternative 4 from the B&C study includes a new 60-inch storm sewer down White Oak Street and continuing down Dunton Avenue. To utilize this route for a 100-year design, this proposed storm sewer would have to be larger than a 60-inch, and may cause constructability issues as well as being a cost-prohibitive design. To minimize the sections of large diameter proposed pipe (>60-inch), CBBEL opted to propose relief sewers along known flooding streets draining north to a main trunk sewer on Cypress Street which drains directly to the expanded detention basin. The high capacity inlets proposed along these relief sewers intercept overland flow at critical flooding locations to ensure stormwater can effectively be displaced to the larger detention basin. Other differences between the CBBEL and B&C recommendations concern the proposed detention basin. It may be expected that since the CBBEL design is for 100-year protection compared to the 10-year in the B&C report, that the required volume would increase significantly. However, the Type II and Huff rainfall distributions discussed previously can generate runoff rates that are very different, but runoff volumes that are similar. Therefore, changing from the Type II to Huff distribution does not significantly change the required storage volume for the Cypress Street basin. In addition, the B&C design allowed approximately 2 of freeboard between the calculated high water elevation and Cypress Street; we have chosen to eliminate any freeboard and allow minor street ponding in the 100- year event. The maximum calculated 100-year depth on Cypress is approximately 0.8 feet from a 12-hour storm event. This change allows the required 100-year storage volume to be provided with a gravity outfall and without the use of a lift station. 7

8 CBBEL also analyzed the effect of lowering the section of raised 36-inch storm sewer just east of Arlington Heights Road. This improvement has minimal benefits for the 100-year storm with respect to lowering water WSELs (< 0.1 feet) in critical flood areas. Therefore, we have not included it as part of the overall 100-year improvements. However, lowering the 36- inch storm sewer does provide benefits to areas along Cypress Street and Dunton Avenue for storm events less than the 10-year if a lower standard of protection is ultimately pursued. The estimated cost of this proposed improvement plan is $6.2 million. A detailed cost estimate of the improvement plan is provided in Appendix 1. Conclusion CBBEL reviewed the study report prepared by B&C and enhanced their XPSWMM modeling to define the existing 100-year flooding problem in the Cypress Street study area. The B&C model lacked a sufficient overland flow network to fully understand the scope of flooding in the Cypress Street study area. CBBEL added overland flow paths and depressional storage areas where required to develop a comprehensive existing conditions XPSWMM model. CBBEL also updated the rainfall distribution from an SCS Type II distribution to Huff distribution, and performed a critical duration analysis to determine which storm event produced the greatest flooding. Overall, simulated flood elevations decreased throughout the Cypress Street study when using the more commonly utilized Huff rainfall distribution compared with the SCS Type II distribution. The existing conditions model was then used as the base to develop an improvement concept plan to alleviate flooding for the 100-year storm. Proposed storm sewers will intercept potential floodwater and convey it to the expanded Cypress Street detention basin. The proposed basin would be gravity drained and expanded from 2.6 to 30.2 ac-ft. This improvement concept intends to lower WSELs along flood areas to an acceptable level by confining excess stormwater within the right of way limits for the 100-year event. The estimated cost of the proposed improvement plan is $6.2 million. List of Enclosures Exhibit 1 Existing Conditions 100-Year Inundation Map Exhibit 2 Proposed Improvement Plan Exhibit 3 Proposed Conditions 100-Year Inundation Map Appendix Year Improvement Plan Cost Estimate MJB/JJJ N:\ARLINGTONHEIGHTS\160058\Water\Docs\M.Cypress Study Area_rev docx 8

City of Elmhurst. Comprehensive Flood Plan. City of Elmhurst. City Council Meeting September 15, 2014

City of Elmhurst. Comprehensive Flood Plan. City of Elmhurst. City Council Meeting September 15, 2014 City of Elmhurst City of Elmhurst Comprehensive Flood Plan City Council Meeting September 15, 2014 City of Elmhurst Presentation Overview Study Background Study Methodology Analysis of Three Additional

More information

Village of Forest Park. July 27, Sewer Separation Evaluation

Village of Forest Park. July 27, Sewer Separation Evaluation Village of Forest Park July 27, 2015 Sewer Separation Evaluation Presentation Overview Study Background Historic Nature of Forest Park Drainage Scale of Flooding Problem Forest Park Sewer System Background

More information

South Bismarck Watershed Model Update and Stormwater Improvement Project

South Bismarck Watershed Model Update and Stormwater Improvement Project Preliminary Engineering Report Bismarck Tribune South Bismarck Watershed Model Update and Stormwater Improvement Project City of Bismarck, ND January 2017 14.105.0046 1.0 Executive Summary The focus of

More information

BRISBANE BAYLANDS INFRASTRUCTURE PLAN FEBRUARY 2011 APPENDIX O DRAFT

BRISBANE BAYLANDS INFRASTRUCTURE PLAN FEBRUARY 2011 APPENDIX O DRAFT BRISBANE BAYLANDS INFRASTRUCTURE PLAN FEBRUARY 2011 APPENDIX O DRAFT PRELIMINARY STORM DRAIN CALCULATIONS ASSOCIATED WITH BRISBANE BAYLANDS REDEVELOPMENT BRISBANE, CALIFORNIA Prepared by BKF Engineers

More information

STORMWATER REPORT FOR WALMART SUPERCENTER STORE # SIOUX FALLS, LINCOLN COUNTY, SOUTH DAKOTA BFA PROJECT NO

STORMWATER REPORT FOR WALMART SUPERCENTER STORE # SIOUX FALLS, LINCOLN COUNTY, SOUTH DAKOTA BFA PROJECT NO STORMWATER REPORT FOR WALMART SUPERCENTER STORE # 2443-00 SIOUX FALLS, LINCOLN COUNTY, SOUTH DAKOTA BFA PROJECT NO. 3286 March 1, 2012 I hereby certify that this engineering document was prepared by me

More information

CHECKLIST FOR PHASE II DRAINAGE REPORT

CHECKLIST FOR PHASE II DRAINAGE REPORT I. COVER SHEET CHECKLIST FOR PHASE II DRAINAGE REPORT A. Name of Project B. Address C. Owner D. Developer E. Engineer F. Submittal date and revision dates as applicable II. GENERAL LOCATION AND DESCRIPTION

More information

October 7, City of Thornton 9500 Civic Center Drive Thornton, CO (303) RE: Maverik Thornton, CO - Drainage Report

October 7, City of Thornton 9500 Civic Center Drive Thornton, CO (303) RE: Maverik Thornton, CO - Drainage Report October 7, 2016 City of Thornton 9500 Civic Center Drive Thornton, CO 80229 (303) 538-7295 RE: Maverik Thornton, CO - Drainage Report As per your request, we are submitting to you the drainage report and

More information

When planning stormwater management facilities, the following principles shall be applied where possible.

When planning stormwater management facilities, the following principles shall be applied where possible. 2.0 Principles When planning stormwater management facilities, the following principles shall be applied where possible. 2.0.1 Drainage is a regional phenomenon that does not respect the boundaries between

More information

Chapter 4 - Preparation of Stormwater Site Plans

Chapter 4 - Preparation of Stormwater Site Plans Chapter 4 - Preparation of Stormwater Site Plans The Stormwater Site Plan is the comprehensive report containing all of the technical information and analysis necessary for the City to evaluate a proposed

More information

MANUAL OF DESIGN, INSTALLATION, AND MAINTENANCE REQUIREMENTS FOR STORMWATER MANAGEMENT PLANS

MANUAL OF DESIGN, INSTALLATION, AND MAINTENANCE REQUIREMENTS FOR STORMWATER MANAGEMENT PLANS MANUAL OF DESIGN, INSTALLATION, AND MAINTENANCE REQUIREMENTS FOR STORMWATER MANAGEMENT PLANS May 2007 SECTION 1 Responsibility of Applicant TABLE OF CONTENTS A. Stormwater Management Plan Required Information

More information

PHASE III DRAINAGE REPORT

PHASE III DRAINAGE REPORT PHASE III DRAINAGE REPORT FOR Eastlake Assisted Living & Memory Care April 20, 2016 June 3, 2016 August 5, 2016 Prepared for: 3301 E 120 th Ave, LLC. 8200 E. Maplewood Ave., Suite 150 Greenwood Village

More information

PCE PRELIMINARY DRAINAGE ANALYSIS REPORT FOR WESTWOOD MIXED USE NEIGHBORHOOD PROJECT 772 NORTH FOREST ROAD TOWN OF AMHERST, ERIE COUNTY, NEW YORK

PCE PRELIMINARY DRAINAGE ANALYSIS REPORT FOR WESTWOOD MIXED USE NEIGHBORHOOD PROJECT 772 NORTH FOREST ROAD TOWN OF AMHERST, ERIE COUNTY, NEW YORK PCE PRELIMINARY DRAINAGE ANALYSIS REPORT FOR WESTWOOD MIXED USE NEIGHBORHOOD PROJECT 772 NORTH FOREST ROAD TOWN OF AMHERST, ERIE COUNTY, NEW YORK MAY 19, 2014 Prepared By: Timothy M. Lavocat, P.E., CFM

More information

Brigitte A. Berger, Director of Engineering

Brigitte A. Berger, Director of Engineering Brigitte A. Berger, Director of Engineering Wilmette s Sewer System Overview of Wilmette s Sewer System Green vs. Gray? Stormwater Action Plan Regulatory Compliance Why Homes Flood What can

More information

City of Waco Stormwater Management Regulations

City of Waco Stormwater Management Regulations 1.0 Applicability: City of Waco Stormwater Management Regulations These regulations apply to all development within the limits of the City of Waco as well as to any subdivisions within the extra territorial

More information

CRYSTAL LAKE FLOODING STUDY

CRYSTAL LAKE FLOODING STUDY Project #08223 CRYSTAL LAKE FLOODING STUDY PREPARED FOR: City of Crystal Lake 100 W. Municipal Complex Crystal Lake, Illinois 60039-0597 REVISED MARCH 19, 2009 26575 W. COMMERCE DRIVE, SUITE 601, VOLO,

More information

4. CONCEPT PLAN DEVELOPMENT

4. CONCEPT PLAN DEVELOPMENT 4. CONCEPT PLAN DEVELOPMENT Concept Plan Step 1: Identify Site Constraints and Opportunities Review the existing site to identify constraints and opportunities for GI Practices to meet the RRv. Constraints

More information

THE VILLAGE OF LOMBARD TERRACE VIEW POND STORMWATER IMPROVEMENTS FEASIBILITY STUDY

THE VILLAGE OF LOMBARD TERRACE VIEW POND STORMWATER IMPROVEMENTS FEASIBILITY STUDY THE VILLAGE OF LOMBARD TERRACE VIEW POND STORMWATER IMPROVEMENTS FEASIBILITY STUDY Prepared by: Christopher B. Burke Engineering, Ltd. 9575 W. Higgins Road, Suite 600 Rosemont, IL 60018 847.823.0500 Date:

More information

STAFFORD TRACT NORTH OF US90A 1.0 INTRODUCTION 1.1 OBJECTIVE

STAFFORD TRACT NORTH OF US90A 1.0 INTRODUCTION 1.1 OBJECTIVE 1.0 INTRODUCTION 1.1 OBJECTIVE This report, prepared for submittal to TxDOT, analyzes existing and proposed detention facilities draining into the TxDOT US90A storm sewer system. The results of the detailed

More information

MASTER DEVELOPMENT DRAINAGE PLAN FOR MONUMENT HEIGHTS

MASTER DEVELOPMENT DRAINAGE PLAN FOR MONUMENT HEIGHTS MASTER DEVELOPMENT DRAINAGE PLAN FOR MONUMENT HEIGHTS DRAINAGE REPORT STATEMENT ENGINEER'S STATEMENT: The attached drainage plan and report were prepared under my direction and supervision and are correct

More information

Appendix K. Stormwater Management Plan

Appendix K. Stormwater Management Plan Regional Municipality of Halton - Steeles Avenue (Regional Road 8) Class EA - Industrial Drive to Regional Road 25/Martin Street Appendix K Stormwater Management Plan PR226401.001 Rev. 2 PR.DOT, 00/01

More information

Why a new Food & Farm Ordinance?

Why a new Food & Farm Ordinance? Growing for Kane Why a new Food & Farm Ordinance? 1. Growing obesity issue 64% of Kane adults are overweight or obese 2. Low rates of fruit & vegetable consumption Healthy diets include more fruits & veggies.

More information

Neighborhood Drainage Infrastructure Improvements Using Green Initiatives. Village of Hinsdale, IL

Neighborhood Drainage Infrastructure Improvements Using Green Initiatives. Village of Hinsdale, IL Neighborhood Drainage Infrastructure Improvements Using Green Initiatives Village of Hinsdale, IL Presentation Agenda Project Overview Goals and Objectives Design Approach Public Coordination Recap Questions

More information

City of Elmhurst. City of Elmhurst. Storm Sewer System Workshop November 22, 2010

City of Elmhurst. City of Elmhurst. Storm Sewer System Workshop November 22, 2010 City of Elmhurst City of Elmhurst Storm Sewer System Workshop November 22, 2010 1 City of Elmhurst Watershed divide (green dashed line) through Elmhurst Area east of divide drains to Addison Creek Area

More information

HEALTH SCIENCES BUILDING REDEVELOPMENT PROJECT

HEALTH SCIENCES BUILDING REDEVELOPMENT PROJECT INTRODUCTION In recent years, the University of Cincinnati (University) has demonstrated a commitment to identifying and implementing sustainable goals and objectives throughout University s Uptown Campuses.

More information

Hydrologic Assessment of using Low Impact Development to Mitigate the Impacts of Climate Change. Chris Jensen, AScT Master of Science Thesis

Hydrologic Assessment of using Low Impact Development to Mitigate the Impacts of Climate Change. Chris Jensen, AScT Master of Science Thesis Hydrologic Assessment of using Low Impact Development to Mitigate the Impacts of Climate Change Chris Jensen, AScT Master of Science Thesis Bowker Creek Initiative April 12, 2012 Outline 1. Future Impacts

More information

Draft Rhode Island Stormwater Design and Installation Standards Manual

Draft Rhode Island Stormwater Design and Installation Standards Manual Draft Rhode Island Stormwater Design and Installation Standards Manual Summary The May 2009 Public Review Draft version of the RI Stormwater Design and Installation Standards Manual consists of approximately

More information

STORMWATER MASTER PLAN

STORMWATER MASTER PLAN STORMWATER MASTER PLAN Prepared for CITY OF DES PLAINES 1420 MINER STREET DES PLAINES, IL 60016 July 2003 CBBEL Project No. 02-73 TABLE OF CONTENTS Page # LIST OF TABLES... v LIST OF EXHIBITS... vi LIST

More information

APPENDIX B. Hydrologic and Hydraulic Analysis

APPENDIX B. Hydrologic and Hydraulic Analysis APPENDIX B Hydrologic and Hydraulic Analysis HYDROLOGIC AND HYDRAULIC ANALYSIS PETERSBURG ROAD IMPROVEMENTS DOT&PF Project No. 67879 Prepared for: State of Alaska Department of Transportation and Public

More information

NAPA COUNTY PUBLIC WORKS Standards & Specifications

NAPA COUNTY PUBLIC WORKS Standards & Specifications Roadway Design & Construction Manual (Table of Contents) 1. Chapter 1: General Provisions 1.1 Short Title 1.2 Jurisdiction 1.3 Purpose and Effect 1.4 Enactment Authority 1.5 Amendment and Revisions 1.6

More information

continues in the watershed, additional flood control and water quality / natural system improvements may be required in the future.

continues in the watershed, additional flood control and water quality / natural system improvements may be required in the future. The Duck Pond Watershed is located in northern Hillsborough County in an area in which a number of land and water management issues are currently being addressed by citizen's action groups and state, regional

More information

Washington County, Maryland Division of Public Works Policy Manual

Washington County, Maryland Division of Public Works Policy Manual Washington County, Maryland Division of Public Works Policy Manual Subject: Downstream Drainage Easement Category: Land Development Engineering Number: 7-4.1 Date: June 1, 2009 (effective) PURPOSE: The

More information

Successful Green Infrastructure Planning: A Micro-Scale Modeling and Field Investigation Approach

Successful Green Infrastructure Planning: A Micro-Scale Modeling and Field Investigation Approach Successful Green Infrastructure Planning: A Micro-Scale Modeling and Field Investigation Approach Hazem Gheith and Vinnie Treatment, Water Division, ARCADIS-US Hunter Kelly, Department of Sewage and Drainage,

More information

Leduc Industrial Outline Plan SE W4

Leduc Industrial Outline Plan SE W4 Leduc Industrial Outline Plan SE 1-50-25-W4 Within the North Leduc Industrial ASP Prepared for: Leduc Energy Park Ltd. Prepared by: Stantec Consulting Ltd. File No. 1161 104655 V5 Table of Contents 1.0

More information

CITY OF VALPARAISO STORMWATER MASTER PLAN

CITY OF VALPARAISO STORMWATER MASTER PLAN CITY OF VALPARAISO STORMWATER MASTER PLAN APPROVED BY THE VALPARAISO CITY UTILITIES BOARD OCTOBER, 2016 Prepared by the City of Valparaiso Engineering Department PLAN SUMMARY Major flash flooding in August

More information

Table of Contents G.1.a Water Resources - Surface Water - Drainage

Table of Contents G.1.a Water Resources - Surface Water - Drainage Table of Contents G.1.a Water Resources - Surface Water - Drainage 1. INTRODUCTION... 1335 2. ENVIRONMENTAL SETTING... 1335 a. Regional Hydrology... 1335 b. Local Hydrology... 1337 c. On-site Hydrology...

More information

September 7, Mr. Brant Gary Director of Public Works City of Bellaire 7008 S. Rice Avenue Bellaire, Texas 77401

September 7, Mr. Brant Gary Director of Public Works City of Bellaire 7008 S. Rice Avenue Bellaire, Texas 77401 September 7, 2016 Mr. Brant Gary Director of Public Works City of Bellaire 7008 S. Rice Avenue Bellaire, Texas 77401 Re: City of Bellaire, Texas FY 2016 Drainage Study Dear Mr. Gary: ARKK Engineers, LLC

More information

Modeling Rain Garden LID Impacts on Sewer Overflows

Modeling Rain Garden LID Impacts on Sewer Overflows 7 Modeling Rain Garden LID Impacts on Sewer Overflows Uzair (Sam) M. Shamsi In September 2010, the U.S. Environmental Protection Agency (USEPA) released a new version (5.0.021) of Storm Water Management

More information

Stormwater Retrofitting: The Art of Opportunity. Presented by the Center for Watershed Protection

Stormwater Retrofitting: The Art of Opportunity. Presented by the Center for Watershed Protection Stormwater Retrofitting: The Art of Opportunity Presented by the Center for Watershed Protection What Are Stormwater Retrofits? Retrofits are stormwater management measures inserted in an urban or ultra-urban

More information

Status Update of Turf Work Order. January 18, 2013 MIDS Workgroup Meeting

Status Update of Turf Work Order. January 18, 2013 MIDS Workgroup Meeting Photo: http://en.wikipedia.org/wiki/file:seededfertilizedlawn.jpg Status Update of Turf Work Order January 18, 2013 MIDS Workgroup Meeting Categories of Turf Credits 1. Impervious Surface Disconnection-turf

More information

City of Norfolk Coastal Flood Mitigation Program. March 13, 2013

City of Norfolk Coastal Flood Mitigation Program. March 13, 2013 City of Norfolk Coastal Flood Mitigation Program March 13, 2013 Topics Brief overview of Norfolk s Coastal Flood Program Data-driven analysis and decision making City-wide vulnerability, project concepts,

More information

C ity of Grande Prairie Development Services Department

C ity of Grande Prairie Development Services Department C ity of Grande Prairie Development Services Department FAIRWAY DEVELOPMENT OUTLINE PLAN OP 08 09 Approved April 6, 2009 Prepared by: Focus Corporation Table of Contents 1.0. Introduction 2 3 1.1. Plan

More information

Existing Conditions and Environmental Consequences Floodplains

Existing Conditions and Environmental Consequences Floodplains 3.9 Environmental Consequences 3.8 3.8.1 WHAT ARE FLOODPLAINS? are low-lying areas adjacent to rivers, streams, and other waterbodies that are susceptible to inundation (flooding) during rain events. These

More information

Separate Storm Sewer System Study Questions/Answers

Separate Storm Sewer System Study Questions/Answers 1 Separate Storm Sewer System Study Questions/Answers Village of Wilmette, Illinois March 13, 2018 Green Infrastructure 2 3 Role of Green Infrastructure Green Stormwater Infrastructure (GSI) can reduce

More information

Photo 1: Upper Rock Creek Trash, east of Ogontz Ave. Map 1: Map of Upper Rock Creek with photos of conduit openings

Photo 1: Upper Rock Creek Trash, east of Ogontz Ave. Map 1: Map of Upper Rock Creek with photos of conduit openings Philadelphia and Cheltenham Litter Polluting Upper Rock Creek Kelly O Day Litter from the Wadsworth shopping area, Cheltenham Avenue, Limekiln Pike, Ogontz Avenue and the 3 large Cheltenham shopping malls

More information

PRELIMINARY DRAINAGE REPORT LATHAM 200 MMSCFD GAS PROCESSING PLANT

PRELIMINARY DRAINAGE REPORT LATHAM 200 MMSCFD GAS PROCESSING PLANT PRELIMINARY DRAINAGE REPORT LATHAM 200 MMSCFD GAS PROCESSING PLANT LOTS B, RECORDED EXEMPTION 1211-2-1, RECX13-0096 LOCATED IN THE NORTH 1/2 OF SECTION 2, TOWNSHIP 3 NORTH, RANGE 66 WEST, 6 TH PRINCIPAL

More information

Floodplain Technical Memorandum

Floodplain Technical Memorandum Southeast Extension Project Lincoln Station to RidgeGate Parkway Prepared for: Federal Transit Administration Prepared by: Denver Regional Transportation District May 2014 Table of Contents Page No. Chapter

More information

IMPLEMENTING STORMWATER MANAGEMENT REQUIREMENTS FOR DEVELOPMENT

IMPLEMENTING STORMWATER MANAGEMENT REQUIREMENTS FOR DEVELOPMENT IMPLEMENTING STORMWATER MANAGEMENT REQUIREMENTS FOR DEVELOPMENT 4.1 Overview Description: Requirements and standards for controlling runoff from development are critical to addressing water quantity and

More information

Village of New Maryland. Storm Water Management Master Plan

Village of New Maryland. Storm Water Management Master Plan Village of New Maryland Storm Water Management Master Plan Village of New Maryland Storm Water Management Master Plan Fredericton Office 80 Bishop Drive Fredericton NB E3C 1B2 Canada Telephone: +1 506

More information

4. Contractor (and subcontractors if applicable) certification statement(s)

4. Contractor (and subcontractors if applicable) certification statement(s) CHEMUNG COUNTY STORMWATER COALITION STORMWATER POLLUTION PREVENTION PLAN (SWPPP) SUBMITTAL CHECKLIST GENERAL INFORMATION: 1. Owner/Operator name, legal address, phone number 2. Copy of signed Notice of

More information

Huntington Stormwater Utility

Huntington Stormwater Utility Huntington Stormwater Utility Stormwater Management & Sediment and Erosion Control Requirements for Construction Sites Authorized by Huntington City Code Articles: 971, 970, 930, 935, 955, Revised April

More information

STORMWATER MANAGEMENT CODES ANALYSIS RICHLAND COUNTY, SC SITE PLANNING ROUNDTABLE

STORMWATER MANAGEMENT CODES ANALYSIS RICHLAND COUNTY, SC SITE PLANNING ROUNDTABLE STORMWATER MANAGEMENT CODES ANALYSIS RICHLAND COUNTY, SC SITE PLANNING ROUNDTABLE Codes analyses for each subcommittee were completed to assist participants of the Richland County Site Planning Roundtable.

More information

PSLS Surveyors' Conference Workshop Information Form Workshop Number: (leave blank if unknown) Hours: Workshop Title: Workshop Description: Suggested Speaker(s), affiliation/contact information 1. 2. 3.

More information

TENNESSEE GAS PIPELINE COMPANY, L.L.C.

TENNESSEE GAS PIPELINE COMPANY, L.L.C. TENNESSEE GAS PIPELINE COMPANY, L.L.C. HYDROLOGIC AND HYDRAULIC CALCULATIONS FOR ACCESS ROADS ALONG THE CONNECTICUT PIPELINE EXPANSION PROJECT CONNECTICUT LOOP Submitted by: Tennessee Gas Pipeline Company,

More information

Do you know there your MS4 is?

Do you know there your MS4 is? Do you know there your MS4 is? Understanding risk Beth Chesson, CPESC, CPSWQ September 14, 2015 Understand your MS4 Reduce your risk Nutrient management MS4 Flood management CIP Comprehensive Stormwater

More information

ST. MARY S SOIL CONSERVATION DISTRICT (SMSCD) AND DPW&T CONCEPT EROSION AND SEDIMENT CONTROL AND STORMWATER MANAGEMENT GUIDELINES AND CHECKLIST

ST. MARY S SOIL CONSERVATION DISTRICT (SMSCD) AND DPW&T CONCEPT EROSION AND SEDIMENT CONTROL AND STORMWATER MANAGEMENT GUIDELINES AND CHECKLIST St. Mary s Soil Conservation District 26737 Radio Station Way, Suite B Leonardtown, MD 20650 Phone: 301-475-8402 ext. 3 Fax: 301-475-8391 www.stmarysscd.com St. Mary s County Government Department of Public

More information

Appendix E Preliminary Location Hydraulic Study

Appendix E Preliminary Location Hydraulic Study Appendix E Prepared for: State of Alaska Department of Transportation and Public Facilities Prepared by: HDR Alaska, Inc. 2525 C Street, Suite 305 Anchorage, Alaska 99503 February 2014 This page intentionally

More information

Methods to Simulate the Impact of BMPs

Methods to Simulate the Impact of BMPs LA221 Project Ortega Watershed Demonstration Area, Quito Ecuador Ricardo da Cruz e Sousa Master of Landscape Architecture & Environmental Planning University of California, Berkeley December 2011 Ortega

More information

Don t Flood The Rodeo! Preparing for Fort Worth s New Arena

Don t Flood The Rodeo! Preparing for Fort Worth s New Arena Don t Flood The Rodeo! Preparing for Fort Worth s New Arena T F M A S P R I N G C O N F E R E N C E APRI L 27 2017 Scott Hubley, P.E., CFM Justin Oswald, P.E., CFM Christopher Johnson, P.E., CFM PHOTO

More information

David Clark, P.E. RW Armstrong & Associates, Inc. June 20, 2012

David Clark, P.E. RW Armstrong & Associates, Inc. June 20, 2012 David Clark, P.E. RW Armstrong & Associates, Inc. June 20, 2012 The City of Indianapolis is undergoing the completion of RebuildIndy projects. Through Mayor Ballard s RebuildIndy initiative, investments

More information

2014 Stormwater Project Analysis

2014 Stormwater Project Analysis Village of Downers Grove 2014 Stormwater Project Analysis FINAL REPORT Prepared by: Wills Burke Kelsey Associates, Ltd. 8 East Galena Boulevard Aurora, Illinois 60506 Phone: 630-701-2245 Fax: 630-800-1626

More information

VILLAGE OF LAKE BLUFF

VILLAGE OF LAKE BLUFF VILLAGE OF LAKE BLUFF FINANCE COMMITTEE Monday, April 6, 2015 6:00 PM VILLAGE HALL BOARD ROOM 40 E. CENTER AVE, LAKE BLUFF, IL AGENDA I. Call to Order Roll Call Trustee Steve Christensen, Chairman Trustee

More information

Pond Siting Report Update

Pond Siting Report Update Pond Siting Report Update Prepared for: Florida Department of Transportation District 5 CR 46A Realignment from SR 46 to North of Arundel Way Lake County, Florida FPID No. 238275-8-32-02 October 2013 (Draft

More information

Public Information Centre # 2 Coronation Park Drainage Improvements Town of Oakville Municipal Class Environmental Assessment

Public Information Centre # 2 Coronation Park Drainage Improvements Town of Oakville Municipal Class Environmental Assessment November 26, 2014 Public Information Centre # 2 Coronation Park Drainage Improvements Town of Oakville Municipal Class Environmental Assessment Study Area & Drainage System Legend Coronation Project Park

More information

Intercept, Detain and Release. Custer Avenue CSO Relief GRESHAM, SMITH AND PARTNERS

Intercept, Detain and Release. Custer Avenue CSO Relief GRESHAM, SMITH AND PARTNERS HOWCASE Intercept, Detain and Release Custer Avenue CSO Relief GRESHAM, SMITH AND PARTNERS CUSTER AVENUE CSO RELIEF CLIENT City of Atlanta LOCATION Atlanta, Georgia MARKET Water Resources Combined sewer

More information

Drainage Control Plans

Drainage Control Plans 2016 Drainage Design and Erosion Control Manual - Guide Sheet 1C Drainage Control Plans A Drainage Control Plan is the comprehensive submittal package containing all of the technical information, analysis,

More information

New Development Stormwater Guidelines

New Development Stormwater Guidelines New Development Stormwater Guidelines CITY OF MOUNTLAKE TERRACE Table of Contents Introduction... 2 Ecology s Minimum Requirements for stormwater management... 2 Description of the 9 Minimum Requirements...

More information

City of Troutdale South Troutdale Road Storm Drainage Plan

City of Troutdale South Troutdale Road Storm Drainage Plan City of Troutdale South Troutdale Road Storm Plan January 29 City of Troutdale SOUTH TROUTDALE ROAD STORM DRAINAGE PLAN January 29 Prepared for: City of Troutdale 342 SW 4th Street Troutdale, OR 976 Prepared

More information

Erosion & Sediment Control Plan Application Form & Checklist

Erosion & Sediment Control Plan Application Form & Checklist Erosion & Sediment Control Plan Application Form & Checklist GENERAL INFORMATION Application Date: Project Address: Tax Map / Parcel Number(s): PROPERTY OWNER / DEVELOPER Firm Name: Contact Person: Title:

More information

Outfall Flow Analysis for the Oswego Canal and Blue Heron Canal

Outfall Flow Analysis for the Oswego Canal and Blue Heron Canal DRAFT REPORT Outfall Flow Analysis for the Oswego Canal and Blue Heron Canal Prepared for: City of Lake Oswego, Oregon Prepared by: Pacific Water Resources, Inc. January 31, 2008 We Think the World of

More information

COLUMBIA COUNTY LAND DEVELOPMENT SERVICES COURTHOUSE 230 STRAND ST. HELENS, OREGON (503) General Application

COLUMBIA COUNTY LAND DEVELOPMENT SERVICES COURTHOUSE 230 STRAND ST. HELENS, OREGON (503) General Application General Application COLUMBIA COUNTY LAND DEVELOPMENT SERVICES COURTHOUSE 230 STRAND ST. HELENS, OREGON 97051 (503) 397-1501 File No. GENERAL LAND USE PERMIT APPLICATION TYPE OF PERMIT: Zone Change Temporary

More information

Level 1 Downstream Analysis

Level 1 Downstream Analysis Level 1 Downstream Analysis Newcastle Way Apartments Newcastle, Washington King County April 14, 2014 Revised July 10, 2014 Prepared by: Dean A. Furr, P.E. Reviewed by: Donald Scarberry, P.E. Coffman Engineering,

More information

A. Regional Detention Requirements

A. Regional Detention Requirements I. GENERAL DESIGN GUIDELINES A. Full-spectrum detention is provided for all new development, redevelopment or expansion of a site to provide for water quality and flood control detention. B. Detention

More information

USF System Campus Master Plan Updates Goals, Objectives and Policies

USF System Campus Master Plan Updates Goals, Objectives and Policies 2015-2025 USF System Campus Master Plan Updates Goals, Objectives and Policies Tampa Goals, Objectives, and Policies Table of Contents Executive Summary 2015 2025 USF Campus Master Plan Update Introduction

More information

Let s Go to the Beach Evaluation and Modeling of a Coastal Community s Storm Drain System and Outfalls. Jeff Riling GHD November 2016

Let s Go to the Beach Evaluation and Modeling of a Coastal Community s Storm Drain System and Outfalls. Jeff Riling GHD November 2016 Let s Go to the Beach Evaluation and Modeling of a Coastal Community s Storm Drain System and Outfalls Jeff Riling GHD November 2016 Acknowledgments City of Rehoboth Beach Mayor Sam Cooper Sharon Lynn

More information

South Campus Stormwater Master Plan. University of Illinois. June Clark Dietz, Inc S. Neil Street, Suite 100 Champaign, Illinois 61820

South Campus Stormwater Master Plan. University of Illinois. June Clark Dietz, Inc S. Neil Street, Suite 100 Champaign, Illinois 61820 South Campus Stormwater Master Plan University of Illinois June 2007 Submitted by Clark Dietz, Inc. 1817 S. Neil Street, Suite 100 Champaign, Illinois 61820 Table of Contents Executive Summary Section

More information

RFP DRAINAGE OUTFALL DESIGN AND PERMITTING. Mandatory Meeting for Proposers August 15, 2015

RFP DRAINAGE OUTFALL DESIGN AND PERMITTING. Mandatory Meeting for Proposers August 15, 2015 RFP 2018-02 DRAINAGE OUTFALL DESIGN AND PERMITTING Mandatory Meeting for Proposers August 15, 2015 IMPORTANT DATES August 15 th, 2:00pm August 17 th, 5:00pm August 22 nd, 5:00pm September 5 th, 2:00pm

More information

Lincoln 270. City of Lincoln. Stormwater Management Plan. April 2, 2013

Lincoln 270. City of Lincoln. Stormwater Management Plan. April 2, 2013 Lincoln 270 City of Lincoln Stormwater Management Plan April 2, 2013 # 2005.48 Prepared By: Civil Engineering Solutions, Inc. 590 E Street Lincoln, Ca 95648 (916) 645 5700 1.0 Background: The project site

More information

Table of Contents SASD SEWER SYSTEM CAPACITY PLAN 2010 UPDATE EXECUTIVE SUMMARY

Table of Contents SASD SEWER SYSTEM CAPACITY PLAN 2010 UPDATE EXECUTIVE SUMMARY SASD SEWER SYSTEM CAPACITY PLAN 2010 UPDATE EXECUTIVE SUMMARY Table of Contents 1. Objectives and Scope...1 2. Land Use Update...1 Study Area...1 Planning Updates...2 Land Use Map and Projections...2 3.

More information

DESIGN CRITERIA PACKAGE

DESIGN CRITERIA PACKAGE RFQ: 17-C-00003 DESIGN-BUILD SERVICES FOR THE DESIGN CRITERIA PACKAGE PREPARED BY: JAMES E. JACKSON, JR. AIA CITY ARCHITECT CONTRACT ADMINISTRATION DEPARTMENT and INTERFLOW ENGINEERING, L.L.C DESIGN CRITERIA

More information

SITE PLAN REVIEW APPLICATION AND CHECKLIST

SITE PLAN REVIEW APPLICATION AND CHECKLIST SITE PLAN REVIEW APPLICATION AND CHECKLIST PROJECT SUMMARY: Project Name: City/ETA Location: City ETA (Application fee & number of copies needed are based on location) Property Location (Legal Description

More information

Moon Brook FRP BMP Summary Sheet. Ownership of Land where BMP is Located

Moon Brook FRP BMP Summary Sheet. Ownership of Land where BMP is Located Outlet Retrofit Hitzel Terrace The town owned parcel along Hitzel Terrace is a natural wetland area which currently provides some level of stormwater detention and peak-flow attenuation. The proposed project

More information

Appendix E Outfall Identification Standard Operating Procedure

Appendix E Outfall Identification Standard Operating Procedure Appendix E Outfall Identification Standard Operating Procedure Regulated Municipal Separate Storm Sewer System (MS4) Outfall Determination Standard Operating Procedure Department of Environmental Services

More information

ARTICLE III COMBINED SEWERS

ARTICLE III COMBINED SEWERS I ' j I' ARTICLE III COMBINED SEWERS COM'RS MIN.. VOL.281 JAN 2 2001 IMAGE Section 301 Construction; Extension of Sewers The construction of and/or extension to combined sewers are hereby prohibited, unless

More information

User s Guide for the BMP Sizing Tool. Revised December 2017

User s Guide for the BMP Sizing Tool. Revised December 2017 User s Guide for the BMP Sizing Tool Revised December 2017 Table of Contents Section 1.0 Introduction... 1 Section 2.0 Intended Audience... 2 Section 3.0 Installing and Starting the Application... 2 Section

More information

APPENDIX APPENDIX 6 STORMWATER MANAGEMENT REPORT

APPENDIX APPENDIX 6 STORMWATER MANAGEMENT REPORT APPENDIX APPENDIX 6 STORMWATER MANAGEMENT REPORT ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT Prepared for: Forest City Residential Group 1 Metro Tech Center North Brooklyn, NY 11201 Prepared

More information

I. INTRODUCTION. identify long-term capital improvements and rehabilitation measures for the existing drainage system;

I. INTRODUCTION. identify long-term capital improvements and rehabilitation measures for the existing drainage system; I. INTRODUCTION The Town of Windsor, Colorado is presently experiencing rapid growth and development within the boundaries of several of its major drainage basins. As growth continues within these basins,

More information

MDOT Stormwater BMPs: The Challenge of Design. Janeen McDermott, PE Dan DeVaun, PE

MDOT Stormwater BMPs: The Challenge of Design. Janeen McDermott, PE Dan DeVaun, PE MDOT Stormwater BMPs: The Challenge of Design Janeen McDermott, PE Dan DeVaun, PE June 25, 2018 Outline Water Quality Treatment Water Quality Treatment Volume Guidelines Example Project BMP Design Challenges

More information

City of Dade City AMEC Project No Dade City Stormwater Master Plan September 2012 Page 32

City of Dade City AMEC Project No Dade City Stormwater Master Plan September 2012 Page 32 Page 32 3.0 MAJOR DRAINAGE SYSTEMS The 1965 Master Plan Report for Storm Drainage Facilities ( 1965 Master Plan ) identified six primary subwatersheds within the Dade City study area. Each of these areas

More information

CHAPTER 9 STORM DRAINAGE. Minimum Requirements for New Development and Redevelopment

CHAPTER 9 STORM DRAINAGE. Minimum Requirements for New Development and Redevelopment CHAPTER 9 STORM DRAINAGE 9.01 General The standards established by this chapter are intended to represent the minimum standards for the design and construction of storm drainage facilities. 9.02 Design

More information

Philadelphia Creek Trash Assessment (PCTA) Methodology Mill Run Creek Test Case

Philadelphia Creek Trash Assessment (PCTA) Methodology Mill Run Creek Test Case Philadelphia Creek Trash Assessment (PCTA) Methodology Mill Run Creek Test Case Mill Run Creek emerges from a covered creek in Philadelphia to an open creek in Cheltenham. The Creek has extensive trash

More information

1. Project Description

1. Project Description To: By: Checked By: Jimmy Vilce, E.I. (FOT istrict 1 Project Manager) Jennifer Nunn, P.E. (The Balmoral Group) Lori Stanfill, P.E. (The Balmoral Group) Memorandum ate: July 10, 2018 Subject: In May of

More information

4.6. Low Impact and Retentive Grading

4.6. Low Impact and Retentive Grading 4.6. Low Impact and Retentive Grading Low Impact Grading techniques focus on utilizing existing topography during Site layout to minimize cost. Proposing structures, roads, and other impervious surfaces

More information

There is an ongoing regulatory concern that

There is an ongoing regulatory concern that FWRJ Alternatives for Beach Stormwater Outfalls: Preliminary Assessment for City of Naples Reshma Thummadi, Ronald Cavalieri, Andy Holland, and Gregg Strakaluse There is an ongoing regulatory concern that

More information

DFH JOINT VENTURE. Stormwater Management Report for Proposed Residential Subdivision at Graham Block, Pokeno

DFH JOINT VENTURE. Stormwater Management Report for Proposed Residential Subdivision at Graham Block, Pokeno DFH JOINT VENTURE Stormwater Management Report for Proposed Residential Subdivision at Graham Block, Pokeno DOCUMENT CONTROL RECORD Document: DFH Joint Venture Graham Block Stormwater Management Report

More information

Problem Understanding

Problem Understanding Introduction...2-1 Previous Data and Mapping...2-2 Known Problem Areas...2-3 Resident Survey.2-3 Introduction The Village of Downers Grove stormwater system includes storm sewers, streams, wetlands, roadway

More information

Three Rivers Park District Administration Center Rain Garden

Three Rivers Park District Administration Center Rain Garden Three Rivers Park District Administration Center Rain Garden Introduction There are significant changes to the hydrologic regime and nutrient loading following urban and industrial development. The post-development

More information

4. UTILITIES ELEMENT.

4. UTILITIES ELEMENT. 4. UTILITIES ELEMENT. The purpose of this element is to provide for necessary public facilities and services correlated to future land use projections and population demand. Utilities Sub-Elements (A)

More information

Pollutant Removal Benefits

Pollutant Removal Benefits Bioswales Bioswales Similar to biocells, but have a slight, but positive grade toward an outlet Designed to convey the WQv event at very low velocities Promote filtration through native vegetation, infiltration

More information

Master Corridor Study

Master Corridor Study Master Corridor Study North Industrial/Commercial Park Worthington, MN SEH No. February 4, 2008 March 6, 2008 RE: North Industrial/Commercial Park Master Corridor Study Worthington, MN SEH No. Mr. Dwayne

More information

Outfall Retrofit Feasibility Study

Outfall Retrofit Feasibility Study Outfall Retrofit Feasibility Study 2013 APWA-NC SWM Conference September 16-17, 2013 Overview PWD history with outfall retrofits Project setting Review of screening factors and weighting scale QA/QC process

More information