APPENDIX APPENDIX 6 STORMWATER MANAGEMENT REPORT
|
|
- Dorcas Bridges
- 5 years ago
- Views:
Transcription
1 APPENDIX APPENDIX 6 STORMWATER MANAGEMENT REPORT
2 ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT Prepared for: Forest City Residential Group 1 Metro Tech Center North Brooklyn, NY Prepared by: Divney Tung Schwalbe, LLP One North Broadway, Suite 1407 White Plains, NY August 31, 2012 Revised January 4, 2013
3 ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT TABLE OF CONTENTS PAGE NO. EXECUTIVE SUMMARY I. SITE PLANNING...I-1 A. Site Location...I-1 B. Existing Site Conditions...I-1 C. Redevelopment Planning Strategies...I-4 D. Soil Types...I-4 II. WATER QUALITY TREATMENT VOLUME (WQv)...II-1 A. Redevelopment WQv Methodology...II-1 B. Redevelopment WQv Calculations...II-2 III. RUNOFF REDUCTION (RRv)...III-1 A. Redevelopment Requirements for RRv...III-1 B. RRv Strategy...III-1 IV. WATER QUANTITY CONTROL...IV-1 V. EROSION & SEDIMENT CONTROL...V-1 A. Temporary Erosion & Sediment Control Measures...V-1 B. Permanent Measures...V-2
4 ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT LIST OF TABLES TABLE No. PAGE NO. 1 Existing Drainage Conditions... II-3 2 Redeveloped Drainage Conditions... II-4 3 Redevelopment Stormwater Requirements... II-5 4 Stormwater Quality Management Measures... II-6 5 Stormwater Quantity Design Flow Summary... IV-2 LIST OF FIGURES FIGURE No. PAGE NO. SWM-1 Site Location Aerial Photograph... I-2 SWM-2 Existing Drainage Conditions Map... I-3 SWM-3 Proposed Drainage Conditions Map... I-6
5 Executive Summary This Stormwater Management Report has been prepared to address changes to the stormwater characteristics within the City of New Rochelle that would result from the redevelopment of two parcels of publically owned property located along the Long Island Sound. Stormwater management requirements of the proposed redevelopment for the 9.44-acre site will be evaluated and quantified in terms of stormwater runoff quantity and quality associated with on-site stormwater discharge. The stormwater management design of the redeveloped facility adheres to a five step process outlined by the New York State Department of Environmental Conservation s (NYSDEC) New York State Stormwater Management Design Manual (NYSSMDM), dated August The following report is a summary of the strategies employed to redevelop the existing site while meeting the stormwater regulations and requirements included in the New York State Department of Environmental Conservation (NYSDEC) SPDES General Permit GP Through the use of proposed site planning methods, reduction in impervious surfaces, and alternative stormwater management practices (SMPs) at the redeveloped site, the proposed stormwater peak rates of stormwater runoff are estimated to be below existing conditions for each 24-hour storm event up to and including the 100- storm event. In addition, the total runoff volume from the redeveloped site will be reduced due to a reduction in impervious area and the addition of new planting areas to promote infiltration into the ground. All stormwater runoff will eventually discharge to the Long Island Sound flowing either overland, through three (3) new proposed outfalls, or via the existing municipal storm drain system within the Main Street/US Rt. 1 right-of-way.
6 I. Site Planning A. Site Location The Echo Bay Center site is located on the south side of the intersection of Main Street and Huguenot Street in the City of New Rochelle, Westchester County, New York. The Project Site is bounded to the north by US Rt. 1 (Main Street), to the east by commercial structures and the Westchester County Wastewater Treatment Plant, to the west by commercial development, to the southwest across Echo Bay (Sutton Manor) a single family residential neighborhood, and to the south by Echo Bay and Long Island Sound. The majority of the site currently drains overland directly to the Long Island Sound, while the northwestern portion of the site drains to the storm sewer along US Rt. 1, before discharging to the Long Island Sound. Refer to the attached Site Location Aerial Photograph, Figure SWM-1 for an aerial view of the site and its surrounding areas. B. Existing Site Conditions: The Project Site consists of two (2) parcels totaling 9.44 acres and includes a number of buildings associated with the New Rochelle Armory and the City of New Rochelle Department of Public Works. The majority of the site is covered by buildings, asphalt pavement, or gravel. There are limited lawn areas and trees within the site. An Existing Drainage Conditions Map, Figure SWM-2, has been prepared to identify the existing watershed areas, drainage patterns, and discharge points of the Project Site. The project site is divided into two separate sub-watersheds: sub-watershed A and sub-watershed B. The project site drains to the southeast to the Long Island Sound (Design Point DP-1), and to the northwest to US Rt. 1 (Design Point DP-2). Design Point DP-1 discharges directly to the Long Island Sound, and Design Point DP-2 discharges to the municipal stormwater sewer along US Rt. 1 before discharging into the Long Island Sound. The entire existing study watershed, approximately 9.44 acres in size, includes approximately 6.69 acres of impervious surfaces which accounts for more than 70% of the study area. I-1
7
8
9 C. Redevelopment Planning Strategies: One of the redevelopment goals is to improve stormwater infiltration through new pervious areas consisting of planting areas, lawns, and low gradient slopes. A new mixed-use building, approximately 350,000 square feet, will be constructed on the site of the existing City of New Rochelle Department of Public Works maintenance yard. The new building will include residential apartments and a small amount of retail space facing Main Street. New publically accessible uses and waterfront open space improvements, including a waterfront walk with future links to adjoining parcels, planting and lawn areas, bulkhead repairs, a kayak dock, a walk-in ramp, sitting and activity areas along the Echo Bay shoreline, and public parking will be constructed along the shoreline. The existing Armory Building is planned to be maintained and renovated into other uses by the city and others. Several outbuildings and paved/gravel yard areas will be removed as part of the overall demolition and site preparation. In addition to careful site planning strategies to improve infiltration, stormwater management measures have been proposed to improve stormwater runoff conditions and maintain the pre-construction hydrology of the site. As shown on the Proposed Drainage Conditions Map, Figure SWM-3, the reduction in impervious cover on the site and installation of the hydrodynamic separator on the former Armory parcel to remove sediment and pollutants from the stormwater will significantly improve the overall water quality of the stormwater runoff from the site by providing infiltration and an increased travel time allowing for sediment removal and nutrient uptake into the planted regime. There are now three proposed watersheds: AA-1 (includes 3 new outfalls), AA-2, and BB. Sub-watersheds AA-1 and AA-2 both drain to DP-1, while sub-watershed BB drains to DP-2. D. Soil Types: The soil classifications and their limits were provided from mapping compiled by the U.S. Department of Agriculture Soil Service Soil Survey of Westchester County, New York which has classified the soil types as follows: I-4
10 Soil Symbol Hydrologic Soil Group Description Ub n/a Urban Land Hydrologic Group C was used for curve number calculations. I-5
11
12 II. Water Quality Treatment Volume (WQv) As a redevelopment project, the required water quality volume (WQv) is estimated as a percentage of WQv from the total impervious area equal to the total existing impervious area plus 100% of the WQv of the increased impervious area. Table No.1, Existing Drainage Conditions, illustrates a breakdown of the impervious and pervious areas within each subwatershed discharging to the two DPs. Table No. 2, Redeveloped Drainage Conditions, tabulates the proposed conditions of the redeveloped site for the Echo Bay Center. A. Redevelopment WQv Methodology Per Chapter 9, Redevelopment Projects, of the New York State Department of Environmental Conservation (NYSDEC) New York State Stormwater Management Design Manual (NYSSMDM), August 2010, required WQv is calculated using one or more of four separate options. Option 1 The reduction of impervious cover from existing conditions to redeveloped conditions by 25% or more. The Echo Bay Center project fulfills this requirement by reducing the impervious cover of the site by approximately 26%. Option 2 Redevelopment WQv calculation includes a minimum of 25% of the WQv from the existing disturbed impervious area to be captured and treated by the implementation of a NYSDEC standard practice or green infrastructure technique. Due to the proximity to the Long Island Sound and lack of available elevation, standard stormwater management practices are not proposed. Option 3 The use of alternative practices, sized to meet a minimum of 75% of the water quality volume from the disturbed, impervious area. The NYSDEC allows for the use of accepted verified manufactured technologies. It is proposed that one of these measures, a hydrodynamic separator, be used in sub-watershed AA-2 (DP 1). A hydrodynamic separator which removes up to 80% total suspended solids (TSS) from stormwater runoff is II-1
13 recommended due to the lack of space for a standard SMP or green infrastructure technique. The proposed alternative practice (hydrodynamic separator) will treat the runoff for approximately 12% of the WQv from the disturbed impervious surfaces. This will be done through treating the runoff from the new parking lot located west of the Echo Bay Center mixed use building. Option 4 A combination of the first three options, allowing for the use of standard and alternative practices. The proposed project therefore will include the following combined measures. 1. Reduction in impervious cover approximately 26% 2. Hydrodynamic separator to treat approximately 12% of water quality volume from disturbed impervious surfaces. B. Redevelopment WQv Calculations Table No. 3, Redevelopment Stormwater Requirements, provides a summary of how the proposed project complies with Chapter 9 of the NYSSMDM. Refer to Table No. 4, Stormwater Quality Management Measures, for a detailed breakdown of the estimated WQv for the site. II-2
14 TABLE NO. 1 ECHO BAY CENTER NEW ROCHELLE, NEW YORK EXISTING DRAINAGE CONDITIONS WATERSHED/ SUBBASIN ID AREA (AC) (1) (2) (3) (4) (4) IMPERVIOUS TOTAL I R v CN Ia Tc Tt PERVIOUS Roof Pavement IMP. TOTAL AREA (%) (HRS) (HRS) DESIGN POINT # A B TOTAL AREA I=Percent Impervious, (Impervious Area/Total Area)*100% 2. R v = (I), Minimum Rv= CN=Curve Number 4. Tc=Time of Concentration, Tt=Travel Time 674 Stormwater Analysis GP Revised Jan /4/2013 Divney Tung Schwalbe, LLP
15 TABLE NO. 2 ECHO BAY CENTER NEW ROCHELLE, NEW YORK REDEVELOPED DRAINAGE CONDITIONS WATERSHED/ SUBBASIN ID AREA (AC) (1) (2) (3) (4) (4) IMPERVIOUS TOTAL I R v CN Ia Tc Tt PERVIOUS Roof Pavement IMP. TOTAL AREA (%) (HRS) (HRS) DESIGN POINT # AA AA BB TOTAL AREA I=Percent Impervious, (Impervious Area/Total Area)*100% 2. R v = (I), Minimum Rv= CN=Curve Number 4. Tc=Time of Concentration, Tt=Travel Time 674 Stormwater Analysis GP Revised Jan /4/2013 Divney Tung Schwalbe, LLP
16 TABLE NO. 3 ECHO BAY CENTER NEW ROCHELLE, NEW YORK REDEVELOPMENT STORMWATER REQUIREMENTS A. Impervious Cover (IC) Reduction Site Area 9.44 ac Disturbed Existing Impervious ac Total Proposed Impervious 4.96 ac Impervious Reduction 1.73 ac Impervious Reduction 26% B. Standard/RRV Stormwater Management Practices (SMP) Minimum Impervious Area Required to be Treated by SMP 0% - Not Required 2 C. Alternative Stormwater Management Practices Minimum Impervious Area Required to be treated by Alternative Measures 0% - Design Exceeds Min. Impervious treated by Alternative Measure (Hydrodynamic Separator) 0.60 ac % Impervious Area Treated by Alternative Measure 12% Notes: 1. Approximately 0.45 acres of existing impervious area include gravel roads and lots, which were treated as impervious area for this analysis per Chapter 4 of the New York State Stormwater Management Design Manual, August Per NYSSMDM Chapter 9, if a redevelopment project reduces existing impervious cover by at least 25%, water quality and quantity criteria have been met, and no standard or alternative practices are required. 674 Stormwater Analysis GP Revised Jan /4/2013 Divney Tung Schwalbe, LLP
17 TABLE NO. 4 ECHO BAY CENTER NEW ROCHELLE, NEW YORK STORMWATER QUALITY MANAGEMENT MEASURES SUMMARY DISCHARGE POINT, DP 1 2 EX PROPOSED Total Exist Devel I 1 2 R v P 3,4 S 5 Alternative AREA AREA WQv 6 WQv WQv WQv 6 SMP Measure IMP IMP TOTAL Provided Proposed (ac) (ac) (ac) (%) (in) (cft) (cft) (cft) (cft) Hydrodyanamic ,593 21,269-7,325 2,690 Separator ,043 2, Total ,636 23,293-7,343 2,690 NOTES 1. I=Impervious Cover (%) 2. Rv = (I), Minimum Rv= P=90% Rainfall Event Number 4. P=1.3 in. Westchester County (See Figure 4.1, NYSSMDM, August 2010) 5. S=Hydrologic Soil Group (HSG) Specific Reduction Factor 6. WQv=[(P)(Rv)(A)]/ Stormwater Analysis GP Revised Jan /4/2013 Divney Tung Schwalbe, LLP
18 III. Runoff Reduction (RRv) A. Redevelopment Requirements for RRv Chapter 9, Redevelopment Projects, of the New York State Department of Environmental Conservation (NYSDEC) New York State Stormwater Management Design Manual (NYSSMDM), August 2010, explains that though encouraged, meeting the Runoff Reduction Volume (RRv) sizing criteria is not required for redevelopment projects such as the Echo Bay Center. 1 Runoff reduction is used to replicate pre-development hydrology by maintaining and/or improving preconstruction infiltration, peak runoff flow, and discharge volume. B. RRv Strategy There is a reduction in impervious cover under the proposed action such that the runoff volume from all storm events will be less than under existing conditions. Additionally, with the site located along the coast of the Long Island Sound, there is no need or requirement for peak flow reduction. 1 New York State Department of Environmental Conservation New York State Stormwater Management Design Manual, August 2010, page 9-4. III-1
19 IV. Water Quantity Control Through the use of the proposed site planning methods and the overall reduction in impervious cover the proposed peak rates of runoff from the site will be reduced. Stormwater discharge rates to both the municipal storm sewer in Main Street and directly to the Long Island Sound are equal to or less than existing conditions. Table No. 5, Stormwater Quantity Design Flow Summary, outlines the existing flow rates at each discharge point and the combined flow for the 1- through the hour storm events. Also included are the anticipated design flow rates for the improved redeveloped site, and a delta indicating for each storm event the proposed peak rate of runoff is at or below existing conditions. IV-1
20 TABLE NO. 5 ECHO BAY CENTER NEW ROCHELLE, NEW YORK STORMWATER QUANTITY DESIGN FLOW SUMMARY DESIGN POINT NO. 1-YEAR 2-YEAR 10-YEAR 25-YEAR 100-YEAR SW Flow Runoff Volume SW Flow Runoff Volume SW Flow Runoff Volume SW Flow Runoff Volume SW Flow Runoff Volume (CFS) (AC-FT) (CFS) (AC-FT) (CFS) (AC-FT) (CFS) (AC-FT) (CFS) (AC-FT) Westchester County Rainfall (IN) (1) 1 Existing Developed Delta Existing Developed Delta (1) Northeast Regional Climate Center, Data Ending Stormwater Analysis GP Revised Jan /4/2013 Divney Tung Schwalbe, LLP
21 V. Erosion & Sediment Control As described in the NYSDEC NYSSMDM, in order to protect the waters of the State of New York from adverse impacts of urban stormwater runoff, the typical objectives of stormwater management in redeveloped and newly developed areas include reducing the potential of flooding, flood damage, erosion, and water quality degradation. The following are proposed temporary and permanent stormwater management measures that are NYSDEC accepted methods and are designed to address these objectives. A. Temporary Erosion & Sediment Control Measures During construction, the objective of stormwater management is to minimize soil and sediment leaving the site. The following methods are proposed to achieve this goal: Limit and control the exposure of soil to the extent that can be managed. Install silt fencing, hay bales, inlet protection, sediment traps, swales, berms, energy dissipaters, anti-tracking pads, mulching and seeding. These methods will be regularly maintained and periodically inspected. Divert stormwater runoff away from disturbance areas. Meet NYSDEC New York State Standards and Specifications for Erosion and Sediment Control requirements. The NYSDEC General Permit GP has limitations on the extent of soil disturbance during construction to no more than five acres maximum at any one time, without prior written approval from the municipality, the operators of a NYSDEC regulated Municipal Separate Storm Sewer Systems (MS4s). A disturbance of greater than five acres is not proposed. V-1
22 B. Permanent Measures After completion of the project there will be several permanent stormwater measures that will require regular inspections and maintenance. These stormwater measures include drain inlets, catch basins, manholes, pipes, and a hydrodynamic separator. V-2
23 ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT - APPENDIX Prepared for: Forest City Residential Group 1 Metro Tech Center North Brooklyn, NY Prepared by: Divney Tung Schwalbe, LLP One North Broadway, Suite 1407 White Plains, NY August 20, 2012 Revised January 4, 2013
24 ECHO BAY NEW ROCHELLE, NEW YORK STORMWATER MANAGEMENT REPORT TECHNICAL APPENDIX A. METHODOLOGY 1. Zero Increase in Watershed Peak Runoff 2. Storm Frequencies 3. Technical Approach 4. Rainfall Intensity B. POND PACK MODELING
25 A. METHODOLOGY 1. Zero Increase in Watershed Peak Runoff In accordance with standard development practices, the peak rate of stormwater discharge from the site after the completion of development shall not exceed the estimated predevelopment peak discharge to offsite areas with conveyance systems. Discharge directly to Echo Bay which is tidal influenced is not subject to peak rate control. 2. Storm Frequencies The storm frequencies to be used as a basis for computing peak rate of discharge shall be storms expected once every 1, 2, 10, 25 and 100 s with a duration of 24 hours as defined by the U.S. Department of Agriculture Soil Conservation Service. 3. Technical Approach The method used for estimating peak discharge shall be as per the document released by the Engineering Division of the U.S. Department of Agriculture Soil Conservation Service titled Urban Hydrology for Small Watersheds, Technical Release No. 55, dated June 1986, Type III Storm Distribution. This criterion governs the data that is input into the software, namely the Haestead Methods Quick TR-55 computer program. A summary of the flows under existing and proposed conditions is provided. The complete input and output data is available upon request. A-1
26 4. Rainfall Intensity Frequency and intensities, which have been used in this report, are as follows: WESTCHESTER COUNTY RAINFALL INTENSITY BY STORM FREQUENCY 1 Storm Frequency Year Rainfall Intensity (24-Hour Period) (Inches) Northeast Regional Climate Center, Data Ending 2003 A-2
27 B. POND PACK MODELING B-1
28 Subsection: Master Network Summary Existing Conditions Catchments Summary A A A A A B B B B B Label Scenario Pre-Development 1 Pre-Development 2 Pre-Development 10 Pre-Development 25 Pre-Development 100 Pre-Development 1 Pre-Development 2 Pre-Development 10 Pre-Development 25 Pre-Development 100 Return Event (s) Hydrograph Volume (ac-ft) Time to Peak (hours) Peak Flow (ft³/s) Node Summary DP-1 DP-1 DP-1 DP-1 DP-1 DP-2 DP-2 DP-2 DP-2 DP-2 Label Scenario Pre-Development 1 Pre-Development 2 Pre-Development 10 Pre-Development 25 Pre-Development 100 Pre-Development 1 Pre-Development 2 Pre-Development 10 Pre-Development 25 Pre-Development 100 Return Event (s) Hydrograph Volume (ac-ft) Time to Peak (hours) Peak Flow (ft³/s) Echo Bay - PondPack Summary 1/4/2013 Bentley Systems, Inc. Haestad Methods Solution Center 27 Siemon Company Drive Suite 200 W Watertown, CT USA Bentley PondPack V8i [ ]
29 Subsection: Master Network Summary Redeveloped Conditions Catchments Summary AA-1 AA-1 AA-1 AA-1 AA-1 AA-2 AA-2 AA-2 AA-2 AA-2 BB BB BB BB BB Label Scenario Post-Development 1- Post-Development 2- Post-Development 10 - Post-Development 25 - Post-Development 100- Post-Development 1- Post-Development 2- Post-Development 10 - Post-Development 25 - Post-Development 100- Post-Development 1- Post-Development 2- Post-Development 10 - Post-Development 25 - Post-Development 100- Return Event (s) Hydrograph Volume (ac-ft) Time to Peak (hours) Peak Flow (ft³/s) Node Summary DP-1 DP-1 DP-1 DP-1 DP-1 Label Scenario Post-Development 1- Post-Development 2- Post-Development 10 - Post-Development 25 - Post-Development 100- Return Event (s) Hydrograph Volume (ac-ft) Time to Peak (hours) Peak Flow (ft³/s) Echo Bay - PondPack Summary 1/4/2013 Bentley Systems, Inc. Haestad Methods Solution Center 27 Siemon Company Drive Suite 200 W Watertown, CT USA Bentley PondPack V8i [ ]
30 Subsection: Master Network Summary Redeveloped Conditions Node Summary DP-2 DP-2 DP-2 DP-2 DP-2 Label Scenario Post-Development 1- Post-Development 2- Post-Development 10 - Post-Development 25 - Post-Development 100- Return Event (s) Hydrograph Volume (ac-ft) Time to Peak (hours) Peak Flow (ft³/s) Echo Bay - PondPack Summary 1/4/2013 Bentley Systems, Inc. Haestad Methods Solution Center 27 Siemon Company Drive Suite 200 W Watertown, CT USA Bentley PondPack V8i [ ]
A. INTRODUCTION AND SUMMARY OF FINDINGS B. EXISTING CONDITIONS. Table 10-1 Adjacent Storm Drains
Chapter 10: Stormwater Management A. INTRODUCTION AND SUMMARY OF FINDINGS This chapter describes existing and proposed stormwater management on the Site. Potential impacts to stormwater infrastructure
More informationStormwater Pollution Prevention Plan Oneonta Heights Oneonta, NY TABLE OF CONTENTS PAGE
Oneonta Heights Oneonta, NY TABLE OF CONTENTS PAGE I. INTRODUCTION... 2 II. EXISTING CONDITIONS... 3 A. Topography/ Drainage... 3 B. Soils... 3 C. Wetlands... 3 D. Floodplain... 3 E. NYSDEC Environmental
More informationDraft 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 information6.1. INTRODUCTION AND SUMMARY OF FINDINGS
Chapter 6: Stormwater Management 6.1. INTRODUCTION AND SUMMARY OF FINDINGS A Stormwater Pollution Prevention Plan (SWPPP) has been prepared for the Proposed Project in accordance with the requirements
More informationMANUAL 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 informationGoing Green with the NYS Stormwater Design Standards
Going Green with the NYS Stormwater Design Standards Shohreh Karimipour, P.E. NYSDEC History of Stormwater Management Ancient Greek Cisterns Water Cistern Systems in Greece from Minoan to Hellenistic Period,
More informationSTORMWATER 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 informationBRISBANE 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 informationBioretention cell schematic key
Bioretention Cells Bioretention cell schematic key 1 3 Hardwood mulch 2 Curb cut 3 18-30 Modified soil 4 Stone aggregate choker layer 5 Stone aggregate base layer 6 Subdrain 7 Undisturbed soil 8 Overflow/Cleanout
More informationFrench American School of New York
STORMWATER POLLUTION PREVENTION PLAN French American School of New York 400 RIDGEWAY CITY OF WHITE PLAINS, NEW YORK Applicant/Operator/ Owner: French American School of New York 525 Fenimore Road Mamaroneck,
More informationOld Mill Community Association Bioretention Facility
Project Overview This project will install a bioretention facility in a community recreation area owned by the Old Mill Community Association, Inc. Drainage from the area is currently unmanaged and has
More informationOctober 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 informationStormwater 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 informationChapter 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 informationMASTER 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 information4. 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 informationTENNESSEE 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 informationUsing Runoff Reduction Practices to Shrink the Water Quality Volume (WQv) September 18, 2018 Jay Dorsey
Using Runoff Reduction Practices to Shrink the Water Quality Volume (WQv) September 18, 2018 Jay Dorsey This Presentation Ohio EPA Post-Construction Criteria/Guidance Runoff Reduction Accounting Green
More informationEvaluating Low Impact Development Practices for Stormwater Management on an Industrial Site in Mississippi
Evaluating Low Impact Development Practices for Stormwater Management on an Industrial Site in Mississippi Dennis S. Painter, Tennessee Valley Authority, Nashville, Tennessee Donald Becker, Tennessee Valley
More informationCHAPTER 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 informationReview Zone Application for D&R Canal Commission Decision
Review Zone Application for D&R Canal Commission Decision MEETING DATE: July 20, 2016 DRCC #: 16-4803 Latest Submission Received: June 13, 2016 Applicant: Robert McCarthy, PE PSE&G 4000 Hadley Road, 2
More informationAppendix I. Checklists
Appendix I Checklists Town of Greenwich Drainage Manual Department of Public Works - Engineering Division Town Hall - 101 Field Point Road, Greenwich, CT 06836-2540 Phone 203-622-7767 - Fax 203-622-7747
More informationPCE 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 informationSUPPORTING DOCUMENT STORMWATER POLLUTION PREVENTION PLAN (SWPPP) NARRATIVE
SUPPORTING DOCUMENT STORMWATER POLLUTION PREVENTION PLAN (SWPPP) NARRATIVE Please complete this narrative form and submit with your SWPPP drawings. Refer to Kitsap County Stormwater Design Manual Vol.
More informationSouth 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 informationThe Engineer/Developer s Perspective on Storm Water Management
The Engineer/Developer s Perspective on Storm Water Management CASE STUDY: An Innovative Approach to Storm Water Management for Small Parcel Site Development Presented by: James B. Leedom, P.E. The Sigma
More informationSTORMWATER 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 informationWhat is YOUR biggest challenge in stormwater control measure accounting/planning?
Introduction Name Affiliation What is YOUR biggest challenge in stormwater control measure accounting/planning? 1 Opti-Tool Outreach Workshop Part 1 Research Based Stormwater System Accounting November,
More informationTable 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 informationPHASE 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 informationCITY OF TUMWATER 555 ISRAEL RD. SW, TUMWATER, WA (360) (360) (FAX)
CITY OF TUMWATER 555 ISRAEL RD. SW, TUMWATER, WA 98501 (360) 754-4180 (360) 754-4126 (FAX) Email: cdd@ci.tumwater.wa.us APPENDIX II-C SHORT FORM CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN (SWPPP)
More informationUSF 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 informationLeduc 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 informationPSLS 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 informationC.3 STORMWATER TECHNICAL GUIDANCE. Table of Contents. Glossary... viii. Chapter 1 Introduction/How to Use this Handbook
C.3 STORMWATER TECHNICAL GUIDANCE Table of Contents Glossary... viii Chapter 1 Introduction/How to Use this Handbook... 1-1 1.1 Purpose of this Handbook... 1-1 1.2 What is the Countywide Program?... 1-2
More informationPAVING PARKING AREAS AND ROADS DESCRIPTION. Alternate Names: Pavement Practices, Impervious Paving
4.2-i PAVING PARKING AREAS AND ROADS Alternate Names: Pavement Practices, Impervious Paving DESCRIPTION All roads, driveways, and parking lots proposed for year-round use shall be paved with a hard plowable
More informationST. 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 informationSITE 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 informationNPDES - PCSM. Permit Preparation
NPDES - PCSM National Pollutant Discharge Elimination System Post Construction Stormwater Management Permit Preparation Jim Pillsbury, PE Engineer s Workshop - March 4 and 5, 2010 Who needs NPDES? Earth
More informationKeele Campus Storm Drainage. Presented by Mark Hagesteijn September 24, 2013
Keele Campus Storm Drainage Presented by Mark Hagesteijn September 24, 2013 1 Presentation Overview Urbanization Impact on the Hydrologic Cycle Why Do We Manage Stormwater? Typical Stormwater Management
More informationLOUISIANA STATE UNIVERSITY COMPREHENSIVE & STRATEGIC CAMPUS MASTER PLAN. APPENDIX G - Stormwater Study Findings & Stormwater Solutions
LOUISIANA STATE UNIVERSITY COMPREHENSIVE & STRATEGIC CAMPUS MASTER PLAN APPENDIX G - Stormwater Study Findings & Stormwater Solutions LSU: MP Narrative July 2017 3.5 Open Space Existing Conditions The
More informationCity of Stoughton Erosion Control Permit Application (effective 2/6/2018)
City of Stoughton Erosion Control Permit Application (effective 2/6/2018) Incomplete applications will not be accepted Project Name: Address of subject property: Landowner Name(s): Applicant Name: Landowner
More informationCity 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 informationPreliminary Sediment & Stormwater Management Plan Review Checklist DATE RECEIVED: PROJECT NUMBER: PROJECT NAME:
Preliminary Sediment & Stormwater Management Plan Review Checklist DATE RECEIVED: PROJECT NUMBER: PROJECT NAME: General Information: 1. Completed application signed by the owner, review fee, one set of
More informationNAPA 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 informationa. Site Topography and Relationship to Surrounding Topography
C. Topography and Slopes 1. Existing Conditions a. Site Topography and Relationship to Surrounding Topography The Site is gently rolling, as is the surrounding topography (Figure I.A-8). The Property is
More informationFigure 1 Cypress Street Study Area Location Map
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. 16-0058) At the request of
More informationAppendix D - Technical Design Criteria for BMPs
Appendix D - Technical Design Criteria for BMPs City of Wayzata Page 3 On-site infiltration features Definitions and Scope: Infiltration facilities are constructed basins or depressions located in permeable
More informationSTORMWATER SITE PLAN INSTRUCTIONS AND SUBMITTAL TEMPLATE Medium and Large Projects
DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street, Port Townsend, WA 98368 Tel: 360.379.4450 Fax: 360.379.4451 Web: www.co.jefferson.wa.us/communitydevelopment E-mail: dcd@co.jefferson.wa.us STORMWATER
More informationAction Plan for Retrofitting Structural BMPs
Action Plan for Retrofitting Structural BMPs Hawaii State Department of Transportation Highways Division, Oahu District Storm Water Management Program NPDES Permit No. HI S000001 August 2014 Action Plan
More informationProject Applicant Checklist for NPDES Permit Requirements SAN MATEO COUNTYWIDE STORMWATER POLLUTION PREVENTION PROGRAM
Project Applicant Checklist for NPDES Permit Requirements SAN MATEO COUNTYWIDE STORMWATER POLLUTION PREVENTION PROGRAM I. PROJECT DATA Project Name Bay Meadows Development Phase II Project Address 2600
More informationWashington 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 informationUsing the Updated RI Soil Erosion and Sediment Control Handbook. The Introductory Workshop for RIDEM/CRMC Staff January 23, 2015
Using the Updated RI Soil Erosion and Sediment Control Handbook The Introductory Workshop for RIDEM/CRMC Staff January 23, 2015 URI Cooperative Extension NEMO URI Cooperative Extension NEMO White Oak,
More informationRegional Stormwater Management Program
Business Risk Exposure (BRE) Score BTU Community Cost-Share Program (CCSP) Cistern Condition Rating of RSS Asset Criticality of a RSS asset Detention Basin Education Credit Equivalent Residential Unit
More informationPlanning the BMP. Region 2000 Planning District Commission Lynchburg, VA December 13, 20013
Planning the BMP Region 2000 Planning District Commission Lynchburg, VA December 13, 20013 PLANNING THE BMP AGENDA BMP Selection BMP Design SWM Plan Preparation 2 BMP SELECTION Types of BMPs Structural
More informationSoil Erosion and Sediment Control
PDHonline Course C188 (3 PDH) Soil Erosion and Sediment Control Instructor: John Poullain, PE 2012 PDH Online PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.pdhonline.org
More informationPRELIMINARY 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 informationSTORMWATER GREEN INFRASTRUCTURE AND PLANNING/ZONING BOARDS
STORMWATER GREEN INFRASTRUCTURE AND PLANNING/ZONING BOARDS Source: Center for Watershed Protection, 2007 Southern Tier Central Regional Planning & Development Board Chemung County Stormwater Team OUTLINE
More information6.1. INTRODUCTION 6.2. EXISTING CONDITIONS
Chapter 6: Stormwater Management 6.1. INTRODUCTION This Chapter describes the current drainage patterns on the Project Site, the stormwater management system that is proposed as part of the Proposed Project,
More informationErosion & 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 informationUrban Planning and Land Use
Urban Planning and Land Use 701 North 7 th Street, Room 423 Phone: (913) 573-5750 Kansas City, Kansas 66101 Fax: (913) 573-5796 Email: planninginfo@wycokck.org www.wycokck.org/planning To: From: City Planning
More informationIMPLEMENTING 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 informationBaltimore, MD Lt. Gov. Boyd Rutherford
MODEL STANDARD PLAN FOR POULTRY HOUSE SITE DEVELOPMENT ON MARYLAND S EASTERN SHORE MARCH 2011 1800 Washington Boulevard 410-537-3000 Gov. Larry Hogan Baltimore, MD 21230-1718 800-633-6101 Lt. Gov. Boyd
More informationThree 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 information4.5 City of Indianapolis Stormwater Green Infrastructure Guidance: Bioretention (rain gardens) Bioretention Fact Sheet Bioretention Technical Design
4.5 City of Indianapolis Stormwater Green Infrastructure Guidance: Bioretention (rain gardens) Bioretention Fact Sheet Bioretention Technical Design Specification Bioretention O & M Manual Draft Green
More informationUse of Best Management Practices
Use of Best Management Practices Presented at the ANJEC Flood Hazard Workshop Bordentown, NJ March 13, 2008 Stormwater BMPs "a technique, measure or structural control that is used for a given set of conditions
More informationHuntington 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 informationPlan Review Checklist
Plan Review Checklist FOR EROSION AND SEDIMENT CONTROL PLANS _ Minimum Standards - All applicable Minimum Standards must be addressed. All minimum Standards must be adhered to during the entire project
More informationFLAGSTAFF FAMILY FOOD BANK Erik Henricksen, Elena Smith, Garrett Ribas, and Meshal Alotaibi Client: Joshua Spears TA: Dr.
FOOD STORAGE FACILITY FLOODING FLAGSTAFF FAMILY FOOD BANK Erik Henricksen, Elena Smith, Garrett Ribas, and Meshal Alotaibi Client: Joshua Spears TA: Dr. Wilbert Odem 1 BACKGROUND Figure 1: Food Bank Front
More informationSevern River Sub-Watershed: BMP 09-Retrofit
Project ID: BMP_09 Total Treated Drainage Area: 4.57 acres Total Treated Impervious Area: 2.9 acres Total Water Quality Volume (WQv): ~10,300 cubic feet; 0.236 acre-foot Rainfall Depth Treated (Pe): 1
More information4. 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 informationDRAINAGE CALCULATIONS
DRAINAGE CALCULATIONS For the Carroll Single Family Residence At Santa Clara County Saratoga, California APN: 517-26-010 December 18, 2015 Prepared For: John and Peggy Carroll Prepared By: RI Engineering,
More informationStorm Water Quality and Shoreline Restoration Improvements - Grant Funding Request City of Mound Carlson Park Bolton & Menk Project No.
September 15, 2016 Brett Eidem Cost Share Grant Administrator Minnehaha Creek Watershed District 15320 Minnetonka Boulevard Minnetonka, MN 55345 RE: Storm Water Quality and Shoreline Restoration Improvements
More informationSITE PLAN REVIEW ITEMS - REFERENCE CHECKLIST
City of Seminole 9199 113 th Street N. Seminole, FL 33772 Ph: (727) 392-1966 Fx: (727) 319-6583 SITE PLAN REVIEW ITEMS - REFERENCE CHECKLIST Note: This checklist is designed to aid designers in the review
More informationHEALTH 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 informationWest Virginia Stormwater Management Manual: Methods.
West Virginia Stormwater Management Manual: Methods Created to deliver targeted training on new tools and practices to improve the quality of stormwater runoff. www.cbstp.org www.chesapeakestormwater.net
More informationGENERAL ASSEMBLY OF NORTH CAROLINA SESSION 2007 SESSION LAW SENATE BILL 1967
GENERAL ASSEMBLY OF NORTH CAROLINA SESSION 2007 SESSION LAW 2008-211 SENATE BILL 1967 AN ACT TO PROVIDE FOR IMPROVEMENTS IN THE MANAGEMENT OF STORMWATER IN THE COASTAL COUNTIES IN ORDER TO PROTECT WATER
More informationConstruction Site Erosion Control
Construction Site Erosion Control Site: New Residence Halls for the Board of Trustees of the University of Alabama, Tuscaloosa Location North of UA Campus: North of 2nd Street (north of AIME and Bevill
More informationShelbyville, KY Stormwater Best Management Practices. Section 2 EROSION PREVENTION AND SEDIMENT CONTROL PLAN
Section 2 EROSION PREVENTION AND SEDIMENT CONTROL PLAN 2.1 Requirements The City of Shelbyville, KY will require an Erosion Prevention and Sediment Control (EPSC) Plan for most types of development construction.
More informationCity of Richmond. Engineering Design Specifications
City of Richmond Design Specifications June 2008 CITY OF RICHMOND ENGINEERING DESIGN SPECIFICATIONS JUNE 2008 THIS DOCUMENT DETAILS THE MINIMUM STANDARDS TO BE USED FOR THE DESIGN OF ENGINEERING PROJECTS
More informationWhen 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 informationStormwater Fee Credit Manual
NORTHEAST OHIO REGIONAL SEWER DISTRICT Stormwater Fee Credit Manual June 30, 2010 NEORSD Stormwater Fee Credit Manual June 30, 2010 Table of Contents I. Introduction 1 What is a Stormwater Fee? 2 What
More informationGREEN ON THE HORIZON. Challenges of Integrating LID into New Development. Southeast Stormwater Association
GREEN ON THE HORIZON Challenges of Integrating LID into New Development Southeast Stormwater Association Annual Seminar, Charleston SC October 9, 2014 JENNIFER A. NUNN, PE THE BALMORAL GROUP Acknowledgments
More informationVillage 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 informationNon-Residential&Multi-Family PropertyCreditManual
CityofRichmond DepartmentofPublicUtilities StormwaterManagementProgram Non-Residential&Multi-Family PropertyCreditManual ApprovedFebruary2011 City of Richmond Stormwater Non-Residential & Multi-Family
More informationChecklists. Project Name: Location: File Number: Date of Submittal: Reviewer: Date: Applicant: Contact Name: Phone Number:
Applicant: Contact Name: Phone Number: Email: Project Name: Location: File Number: Date of Submittal: Reviewer: Date: Concept Plan Requirements: I. General Project Information 1. Address or parcel number
More informationSTAFFORD 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 informationAPPENDIX 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 informationEROSION PREVENTION BMP SUGGESTED USES MATRIX
EROSION PREVENTION SUGGESTED USES MATRIX Processed Based Tools Software Aids Slope Waterway Surface Concentrated Flows Large Flat Stock Pile Borrow Adjacent Property Impacts Erosion Prevention Measures
More informationCounty Council Of Howard County, Maryland
County Council Of Howard County, Maryland 2010 Legislative Session Legislative Day No. 4 Resolution No. 38-2010 Introduced by: The Chairperson at the request of the County Executive A RESOLUTION revising
More informationAPPENDIX A SIMPLIFIED APPROACH TO STORMWATER MANAGEMENT FOR SMALL PROJECTS. In West Sadsbury Township, Chester County, Pennsylvania
APPENDIX A SIMPLIFIED APPROACH TO STORMWATER MANAGEMENT FOR SMALL PROJECTS In West Sadsbury Township, Chester County, Pennsylvania TABLE OF CONTENTS I. Introduction 3 II. Importance of Stormwater Management
More informationManaging Stormwater within the Road Right-of-Way: An Urban NAI Approach
Turgay Dabak, Joni Calmbacher, Sara DeGroot, Andrea Ryon Managing Stormwater within the Road Right-of-Way: An Urban NAI Approach Presentation Outline Project Background Project Overview BMPs Evaluated
More informationPollutant 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 informationCHECKLIST 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 informationDFH 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 informationCAPE ELIZABETH, MAINE TOWN CENTER STORMWATER MANAGEMENT PLAN UPDATE
CAPE ELIZABETH, MAINE TOWN CENTER STORMWATER MANAGEMENT PLAN UPDATE September 2015 This report was prepared by The Town of Cape Elizabeth under award CZM NA14NOS4190066 to the Maine Coastal Program from
More informationA Review of Green Infrastructure Projects Implemented in the Grand Traverse Region
A Review of Green Infrastructure Projects Implemented in the Grand Traverse Region Sarah U Ren Program Director The Watershed Center of Grand Traverse Bay 231-935-1514, suren@gtbay.org Our Mission: The
More informationLincoln 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 informationImpervious Cover Reduction Action Plan for City of Vineland, Cumberland County, New Jersey
Impervious Cover Reduction Action Plan for City of Vineland, Cumberland County, New Jersey Prepared for the City of Vineland by the Rutgers Cooperative Extension Water Resources Program May 23, 2016 Table
More information2.1 Principles & Objectives
Designing With The Landform 2.1 Principles & Objectives Land planning which integrates the natural features of a site (i.e., designing with the landform ) into the site design is a major component of the
More information