DOCSLIB.ORG

Characterization of Current Conditions

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Characterization of Current Conditions Philadelphia Combined Sewer Overflow Long Term Control Plan Update 3 CHARACTERIZATION OF CURRENT CONDITIONS As prescribed by the 1997 LTCP, PWD has committed to a detailed watershed-based monitoring program in the Cobbs and Tookany/Tacony-Frankford (TTF) Creek Watersheds. This monitoring program includes chemical, biological and physical assessments to characterize the current state of the watershed and identify existing problems and their sources. The need for this detailed watershed monitoring program was rooted in the fact that insufficient physical, chemical and biological information existed on the nature and causes of water quality impairments, sources of pollution, and appropriate remedial measures prior to PWD’s watershed based assessment. Through this assessment process, PWD has sought to gain a good understanding of the physical, chemical and biological conditions of the water bodies, understand the character of the watershed land uses that will drive wet weather water quality conditions, and build a common understanding of these factors among all stakeholders. A compendium document is produced following the analysis of all collected data; this Comprehensive Characterization Report (CCR) assessment serves to document the watershed baseline health prior to implementation of any plan recommendations, allowing for the measure of progress as implementation takes place upon completion of the plan. The CCR is shared with watershed partners for comments and feedback. CCRs have been completed for the Cobbs Creek Watershed in 2004, the TTF Creek Watershed in 2005 and the Pennypack Creek Watershed in 2009 (Section 1, Table 1.4). These CCR documents are available on the partnership website at www.phillyriverinfo.org. Data related to the Cobbs and TTF Watersheds within this section have been pulled from these CCRs. Data related to the Schuylkill and Delaware River Watersheds have been assembled from a number of sources including PWD sampling locations, the United States Geological Survey (USGS) gage stations and the Delaware River Basin Commission (DRBC) monitoring locations. In order to further understand the complex nature and causes of water quality impairments, PWD has continued to monitor and model the collection system within Philadelphia. This section additionally presents information characterizing Philadelphia’s network of sewer systems, regulating structures, drainage districts, contributing watersheds and outlying community municipalities, precipitation data collection and analysis and the collection of water quantity and quality information. 3.1 MONITORING AND DATA COLLECTION Data collection and monitoring is an essential component to appropriately develop and analyze alternatives for the LTCPU. The collected data is organized, assessed for errors and analyzed using a variety of models, tools and methods. The sections below present data necessary to the LTCPU development process and how it was collected. More information specific to the models, methods and tools used to analyze the data is available in Section 5. 3.1.1 Overview of Input Data Collection The development of the LTCPU required extensive data collection and analysis. The data collection and analysis included characterization of the City’s local climate through precipitation data sources; analysis, collection and correct representation of existing infrastructure data; analysis of the contribution of contaminants and flow data with established flow metering programs; analysis of the Section 3 • Characterization of Current Conditions 3-1 Philadelphia Water Department. September 2009 Philadelphia Combined Sewer Overflow Long Term Control Plan Update topography through extensive use of Geographic Information Systems analyses; analysis and collection of socioeconomic status and the cost for improving the infrastructure. The following sections discuss how this data was collected and the sources used to characterize the City for the LTCPU. 3.1.2 Meteorological Monitoring Data Precipitation data are a fundamental component of a Combined Sewer System monitoring program required to calibrate and validate CSO models and develop design conditions needed for characterizing the CSS and estimating CSO statistics. Both long-term temporal rainfall data and event based rainfall data synchronized with CSS flow monitoring are needed to appropriately calibrate and characterize the CSS. There are three primary sources of precipitation data used in the CSO Program. • National Weather Service (NWS) operated Philadelphia International Airport (PIA) surface observation station • PWD’s city-wide rain gage network • Calibrated radar rainfall estimates 3.1.2.1 PIA Precipitation Data Sources NWS gage at the Philadelphia International Airport (PIA), located in southwestern Philadelphia, has over 100 years of hourly precipitation data; the period of record runs from January 3, 1902 through the present. An annual online subscription is maintained by PWD for the Philadelphia International Airport station (PIA) that allows the download of monthly Edited Local Climatological Data published by the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center. The reports are downloaded on a monthly basis when made available - typically four to six weeks behind the end of the current month. Along with hourly rainfall data, the report includes snowfall, temperature, wind speed, atmospheric pressure and other relevant and useful climatological data. 3.1.2.2 PIA Precipitation Data Processing and QA/QC The NWS applies quality assurance procedures to the PIA data internally prior to its release, therefore, no quality assurance protocols are proposed for the PIA data. 3.1.2.3 PWD Precipitation Data Sources PWD maintains a rain gage network consisting of 24 tipping bucket rain gages located throughout the City that record rainfall depths (minimum recorded depth of 0.01 inches) in 2.5-minute increments. The PWD data is considered reliable from 1990-present, with all 24 gages replaced with heated units beginning in the year 2004 in order to allow for accurate measurement of frozen precipitation events. The raw 2.5-minute tipping bucket rain gage data is extracted from a link to the PWD Collector System’s real-time control unit (RTU) database which collects data directly via automatic telephone polling of the gages. The approximate locations of the 24 PWD rain gages are presented in Figure 3-1. The total number of rain gages within each watershed is shown in Table 3-1. Section 3 • Characterization of Current Conditions 3-2 Philadelphia Water Department. September 2009 Philadelphia Combined Sewer Overflow Long Term Control Plan Update Figure 3-1 PWD Rain Gage Locations and Combined Sewer Drainage Areas Section 3 • Characterization of Current Conditions 3-3 Philadelphia Water Department. September 2009 Philadelphia Combined Sewer Overflow Long Term Control Plan Update Table 3-1 Number of PWD Rain Gages within each Watershed Watershed Total Number of Rain Gages Delaware River 10 Schuylkill River 7 Darby-Cobbs Creek 2 Tookany/Tacony Frankford Creek 5 3.1.2.4 PWD Precipitation Data Processing and QA/QC The PWD raw 2.5-minute data are summed to fixed 15-minute intervals. QA/QC of this data is performed on a monthly basis by visual inspection using comparison of data across the network in order to identify and flag missing or questionable data. Flagged data are then filled with coincident data from the six nearest gages using inverse distance squared weighting. On an annual basis, daily rainfall totals for each gage are compared to the network mean using double mass and cumulative residual time series plots in order to identify changes in non-climatic biases at the gages. In this way, gage malfunctions not readily apparent from initial visual inspection of the raw gage data can be identified. Furthermore, bias adjustment periods are identified for each gage and along with comparisons to radar rainfall estimates obtained for a 15-month period of the gage record, a bias adjusted rainfall record is produced for each gage location. Detailed descriptions of the tools and methods of the precipitation bias adjustment are available in Section 5. 3.1.2.5 Calibrated Radar Rainfall Data Sources Due to the fact that storm events are inherently variable and do not evenly distribute rainfall spatially or temporally, PWD obtained discrete measurements of rainfall intensity during storm events targeted for wet weather sampling. For each 15-minute interval, RADAR tower-mounted equipment measured high frequency radio wave reflection in the atmosphere as a series of relative reflectivity measurements for individual 1 km2 blocks. This information was used along with PWD rain gage network data to generate gage calibrated RADAR rainfall estimates and provided to PWD and is further discussed in Section 5.2.1. The National Weather Service’s Next Generation Weather Radar (NEXRAD) program generates products used for estimating spatially variable rainfall data. Several vendors offer gage adjusted radar-rainfall data. PWD rain gage data are used to calibrate NEXRAD data in order to create a detailed and accurate rainfall record that preserves the total rainfall volume reported at the gages while incorporating the spatial variability provided by the NEXRAD data. Detailed rainfall records for areas outside of the City are required for calibration of rainfall dependent inflow and infiltration (RDII) from sanitary sewers contributing flows to the CSS, as well as for watershed modeling performed as part of Phase
Load more

Recommended publications
  • Continuing Education Fall 2013
    Morris Arboretum Continuing Education Fall 2013 GROWING MINDS Nature Sleuths CULINARY ADVENTURES Botany of Beer Chocolate & Wine Tasting BOTANY The World of Mosses CREATIVE EXPRESSIONS Digital Photography TRIPS From Creek to Sewer become a member and save All Membership Levels Include: Premier Memberships • FREE unlimited general admission for a year. Premier Memberships admit up to two named • Complimentary one-time use guest passes.* membership cardholders and their children • DISCOUNTS in the Shop, at the Café, and (or up to 4 grandchildren) 18 and under. on educational classes and excursions. • DISCOUNTS at local garden centers and Beech $115 4 free passes* other retailers. $220 (2 Year Membership ~ Save $10) 8 free passes* • FREE admission to special events. Members enjoy all the general benefits, plus • MEMBERS ONLY Plant Sale Day, plus • Invitation to the Holiday Garden Railway Evening. 1 FREE bonus plant. • RECIPROCAL ADMISSION privileges to over Chestnut $165 6 free passes* 200 gardens. Members enjoy all the benefits of Beech, plus • Seasons newsletter. • BRING 2 FRIENDS – Save your guest passes. Show • E-Newsletter, keeps you up-to-date on all our events. your membership card and get free admission for two • Morris Arboretum automobile decal. additional friends every time you visit the Arboretum. • Attend the Plant Sale Preview. General Memberships Holly $250 6 free passes* Individual Members enjoy all the benefits of Chestnut, plus • Beautiful full-color calendar. $60 (1 Year Membership) 2 free passes* • Invitations to exclusive Arboretum events for $115 (2 Year Membership ~ Save $5) 4 free passes* Premier members. • Admits one named member. • Additional bonus plant at the Plant Sale (2 total).
    [Show full text]
  • [Pennsylvania County Histories]
    REFEI IENCE Ji ffi OOLLE( ]TIONS S-A 9"7 Y.<P H VCf Digitized by the Internet Archive in 2018 with funding from This project is made possible by a grant from the Institute of Museum and Library Services as administered by the Pennsylvania Department of Education through the Office of Commonwealth Libraries https://archive.org/details/pennsylvaniacoun66unse as ... > . INDEX, Page B Page ft <H 4 • H 'p5 'i'T* ^ l I y,bV INDEX. 5age S '1 ' 3age Pag* "S i • s . *■ • • W T uv w IL . 1. , j ’■- w* W ■ : XYZ . I r—;-- Mb . ,_ tr_ .... »> '' mi - . ■ nothing? It is rather a new method to white- I “ nuts for future historians TO CRACK.” * wash one’s “great-grandfather” by blacken-P % ing another man’s “grandfather.” Is it to ' Immense and '(Overwhelming in importance j make money ? Alas! Mr. Editor, for the to future historians as Mr. Smith’s work is, j sake’ of decency I regret to say it is. t we confess after cracking his nuts we found! The long delay in the publication, the the kernels to be wretchedly shrivelled-up i frequent announcements in the newspapers affairs. They are, most of them, what Mr. 1 of what teas to appear, as though held Toots would say, “ decidedly of no conse- | I in terror en% over parties known to be j quence.” After investigating his labors we 1 ■ sensitive on the subject, conclusively show <; have arrived at this conclusion, that the:| Cr' this to be the object. But if more be author, notwithstanding his literary anteee-! wanting, Mr.
    [Show full text]
  • Green City, Clean Waters
    Amended Green City Clean Waters The City of Philadelphia’s Program for Combined Sewer Overflow Control Program Summary Amended by the Philadelphia Water Department June 1, 2011 The creation and implementation of The Philadelphia Water Department is pleased to announce the approval by the Commonwealth of our Green City, Clean Waters vision Pennsylvania of our Green City, Clean Waters plan as amended through negotiations with the Pennsylvania is made possible as a result of the Department of Environmental Protection (PA DEP) since its submission in September, 2009. This program contributions of our partner City represents the City of Philadelphia’s commitment towards meeting our regulatory obligations while help- agencies and departments that provided, and continue to share ing to revitalize our City. Our Combined Sewer Overflow (CSO) Long Term Control Plan Update (LTCPU) their expertise, guidance and support submitted in September, 2009 explains how this vision and the commitment to its implementation grew toward the realization of this plan. out of our history, built on our extensive watershed analysis and planning, and is continually informed by local and national policy trends. The full LTCPU document is available online for download at www.philly- Streets Department watersheds.org/ltcpu/. Mayor’s Office of Sustainability Through evaluation of a number of alternative implementation approaches, we determined that a green Philadelphia Parks & Recreation stormwater infrastructure-based approach would provide maximum return in environmental,
    [Show full text]
  • Historic Context Statement for Lower Northeast Planning District 2012
    ARCHITECTURAL RESEARCH AND CULTURAL HISTORY HISTORIC PRESERVATION CONSULTING HISTORIC CONTEXT STATEMENT FOR LOWER NORTHEAST PLANNING DISTRICT 2012 HISTORIC CONTEXT STATEMENT FOR LOWER NORTHEAST PLANNING DISTRICT EMILY T. COOPERMAN, PH.D. Geographical Summary The Lower Northeast Planning District (figure 1) lies inland (northwest) of the Delaware River waterfront at the point where the northeast and northwest sections of the city branch off from north Philadelphia. The Lower Northeast Planning District is characterized by relatively flat topography that rises gradually from the southeast to the northwest, moving away from the river. The Planning District is bounded on the southwest by the Frankford and Tacony creeks, and abuts Montgomery County on the northwest just south of the Tacony Creek as it turns to the northeast. The Tacony Creek becomes the Frankford Creek at the point where it historically met the Wingohocking Creek, which flowed east from Germantown and is now culverted, near the intersection of Tabor Road and Garland Street. Historically, the Little Tacony Creek flowed in several branches through the heart of the Planning District, meeting the Frankford Creek below where Erie Avenue is now located. Figure 1. Lower Northeast Planning District, outlined in black, with the area previously studied shown in gray LOWER NORTHEAST PLANNING DISTRICT HISTORIC CONTEXT – PAGE 1 ARCHITECTURAL RESEARCH AND CULTURAL HISTORY HISTORIC PRESERVATION CONSULTING HISTORIC CONTEXT STATEMENT FOR LOWER NORTHEAST PLANNING DISTRICT 2012 Introduction The Lower Northeast Planning District can be divided into three general zones that developed at different rates. The settlement and industrial village of Frankford, which was studied in the Historic Context Statement for Neighborhood Cluster 1 (2008-2009), was the historic town center of the Planning District and was one of several such urban concentrations that developed in Philadelphia’s former county before the 1854 Consolidation.
    [Show full text]
  • Baxter Water Treatment Plant (Pwsid# 1510001) Source Water Assessment Report Section 1: General Delaware River Watershed
    PHILADELPHIA WATER DEPARTMENT BAXTER WATER TREATMENT PLANT (PWSID# 1510001) SOURCE WATER ASSESSMENT REPORT SECTION 1: GENERAL DELAWARE RIVER WATERSHED This report was produced for the Pennsylvania Department of Environmental Protection in accordance with the Source Water Assessment and Protection Plan. Prepared by The Philadelphia Water Department June 12, 2002 With support from: Bucks County Water and Sewer Delaware River SWA Philadelphia Suburban Water Company Pennsylvania American Water Company Pennsylvania Department of Environmental Protection Camp Dresser & McKee PADEP Contract: ME350056 Executive Summary – Delaware River Watershed Assessment The 1996 Safe Drinking Water Act Amendments required the assessment of all source water supplies across the country to identify potential sources of contamination, the vulnerability and susceptibility of water supplies to that contamination, and public availability of the information. In response to this charge, the Delaware River Source Water Assessment Partnership, comprised of the Pennsylvania Department of Environmental Protection, the Philadelphia Water Department, the Philadelphia Suburban Water Company, the Pennsylvania American Water Company, and the Bucks County Water and Sewer Authority conducted an assessment with stakeholders to identify water supply protection priorities in the Delaware River Watershed. The following summary includes two main sections. One section discusses the various characteristics and observations made through collection of watershed wide information. The remaining section provides a brief listing of the main recommendations based on the observations and analysis of watershed data. Observations & Characterization S Although the Delaware River has been utilized for thousands of years, the quality of the water source began decreasing rapidly from the time of initial European settlement in the early seventeenth century until corrective, preventive, and protective measures were taken beginning in the 1970’s and 80’s.
    [Show full text]
  • Green2015-An-Action-Plan-For-The
    Green2015 Advisory Group Conveners and Participating Organizations Michael DiBerardinis, Department of Parks and Recreation Commissioner, co-convener Alan Greenberger, Deputy Mayor for Economic Development, co-convener Amtrak Citizens for Pennsylvania’s Future Delaware River Waterfront Corporation Delaware Valley Regional Planning Commission Fairmount Park Conservancy Fairmount Park Historic Preservation Trust Friends of the Wissahickon Greenspace Alliance Natural Land Trust Neighborhood Gardens Association Next Great City Coalition Office of City Councilman Darrell Clarke Office of Councilwoman Anna Verna Pennsylvania Department of Conservation and Natural Resources Pennsylvania Department of Transportation Pennsylvania Environmental Council Pennsylvania Horticultural Society Philadelphia Association of Community Development Corporations Philadelphia City Planning Commission Philadelphia Department of Commerce Philadelphia Department of Licenses and Inspections Philadelphia Department of Public Health Philadelphia Department of Public Property Philadelphia Department of Revenue Philadelphia Housing Authority Philadelphia Industrial Development Corporation Philadelphia Office of Housing and Community Development Philadelphia Office of Sustainability Philadelphia Office of Transportation and Utilities Philadelphia Orchard Project Philadelphia Parks Alliance Philadelphia Parks and Recreation Commission Philadelphia Water Department Redevelopment Authority of Philadelphia School District of Philadelphia Southeastern Pennsylvania Transportation
    [Show full text]
  • Poquessing Creek Act 167 Plan
    POQUESSING WATERSHED ACT 167 STORMWATER MANAGEMENT PLAN VOLUME II – PLAN CONTENTS FINAL REPORT December 7, 2012 BUCKS, MONTGOMERY, AND PHILADELPHIA COUNTIES, PENNSYLVANIA NTM PROJECT NO. 09052.00 POQUESSING WATERSHED ACT 167 STORMWATER MANAGEMENT PLAN BUCKS, MONTGOMERY, AND PHILADELPHIA COUNTIES, PENNSYLVANIA VOLUME II - PLAN CONTENTS FINAL REPORT NTM PROJECT NO. 09052.00 December 7, 2012 PREPARED BY: IN CONJUNCTION WITH: NTM ENGINEERING, INC. PHILADELPHIA WATER DEPARTMENT 130 W Church Street, Suite 200 Office of Watersheds th Dillsburg, PA 17019 1101 Market Street, 4 Floor Philadelphia, PA 19107 BUCKS COUNTY COMMISSIONERS Charles H. Martin, Chairman Robert G. Loughery, Vice-Chairman Diane M. Ellis-Marseglia, LCSW, Commissioner MONTGOMERY COUNTY COMMISSIONERS Josh Shapiro, Chairman Leslie S. Richards, Vice-Chairwoman Bruce L. Castor, Jr. PHILADELPHIA CITY COMMISSIONERS Stephanie Singer, Chairwoman Anthony Clark Al Schmidt PHILADELPHIA COUNTY PLANNING COMMISSION Alan Greenberger, FAIA, Chairman Joseph Syrnick, Vice-Chairman Rob Dubow Patrick Eiding Bernard Lee, Esq. Elizabeth Miller Richard Negrin Nancy Rogo Trainer, AIA, AICP ENGINEERING CONSULTANT NTM Engineering, Inc. Temple University IN CONJUNCTION WITH: Philadelphia Water Department i POQUESSING WATERSHED DESIGNATED WPAC MEMBERS Poquessing Watershed Partnership Contact List Last Name First Name Affiliation Abrams Glen Philadelphia Water Department Barletta Marissa CDM for Philadelphia Water Department Barsamian Sherry Kraft Belfield Tony Bensalem Township Supervisor Bickel Barry
    [Show full text]
  • [Pennsylvania County Histories]
    •. «< '• . : ; ■TtA*-t4ww: P3PHI Digitized by the Internet Archive in 2018 with funding from This project is made possible by a grant from the Institute of Museum and Library Services as administered by the Pennsylvania Department of Education through the Office of Commonwealth Libraries https://archive.org/details/pennsylvaniacoun38unse M^RK TWAIN’S SoRdr 6QG PATENT 281.657. TRADE MARKS: UNITED STATES. GREAT BRITAIN. Registered No. 5,896. Registered No. 15,979. DIRECTIONS. Use but little moisture, and only on the gummed lines. Press the scrap on without wetting it. DANIEL SLOTE & COMPANY, NEW YORK. 1 ‘ « CttCCC t t cc t * ‘ I t [I I i I* (t( ( c 4 « C t l t t C C C c c tc tc«cticc etc C C uv -W W XYZ If DOOOOOOOOq 0 0 ON lj 1 R 000000000000 ——-— In the Winter camp officers clubbed to; amusement, and ther billiard playing, glei not. The programme been complete witho wasn’t poker-playing fresh, crisp greenbac the plans for the new city, which, being approved, he immediately laid out.' Yet to-day when his beloved city is making its preparations for the greatest From, jubilee of peace in its history, this man’s name is almost unknown, and this man’s grave remains without a flower, unswept, without one glance of honor in its direc¬ tion. On the other side of the little monu¬ ment are the words:— Date frUF /Sff “He became proprietor of 1646. acres of land in one tract by grant of William Penn in 16S4, named it his ‘Well Spring Plantation,’ of which this spot is part.’’ THE GRAVE OF THE MAN WHO • • * PLANNED OUR CITY OF f LIES NEGLECTED IN ITS VERY V * • .
    [Show full text]
  • Eastern Delaware County Stormwater Collaborative Pollutant Reduction Plan Supplemental Intergovernmental Agreement
    Eastern Delaware County Stormwater Collaborative Pollutant Reduction Plan Date: April 10, 2018 C o n e s t o g a W a t e r s Prepared for: h Eastern Delawaree County Stormwater Collaborative d P.O. Box 315 A Morton, PA 19070 l l Prepared by: i a LandStudies, Inc. n 315 North Street c Lititz, PA 17543 e 717-627-4440 P www.landstudies.com O B o x 6 L 3 i 5 t 5 t Lancaster, PA 17607 l e L C i o t n t e l s e t Table of Contents Introduction ............................................................................................................................... 1 A. Public Participation ........................................................................................................... 2 C. Pollutants of Concern ........................................................................................................ 5 D. Existing Load for Pollutants of Concern ............................................................................ 6 D.1 Cobbs Creek Existing Load .............................................................................................................................. 7 D.2. Darby Creek Watershed Existing Load ........................................................................................................... 8 D.3 Total Existing Load and Percent Share of Loading for Budget Ratios and Pollution Reduction Credit ....... 9 E. BMPs Selected to Achieve the Minimum Required Reductions in Pollutant Loading .... 10 E.1. Background Information and Rationale ......................................................................................................
    [Show full text]
  • Eastern Delaware County Stormwater Collaborative Pollutant Reduction Plan Supplemental Intergovernmental Agreement
    Eastern Delaware County Stormwater Collaborative Pollutant Reduction Plan Date: September 7, 2017 C o n e s t o g a W a t e r s Prepared for: h Eastern Delawaree County Stormwater Collaborative d P.O. Box 315 A Morton, PA 19070 l l Prepared by: i a LandStudies, Inc. n 315 North Street c Lititz, PA 17543 e 717-627-4440 P www.landstudies.com O B o x 6 L 3 i 5 t 5 t Lancaster, PA 17607 l e L C i o t n t e l s e t Table of Contents Introduction .................................................................................................................................. 1 A. Public Participation .............................................................................................................. 2 C. Pollutants of Concern ........................................................................................................... 5 D. Existing Load for Pollutants of Concern .............................................................................. 6 D.1 Cobbs Creek Existing Load .............................................................................................................................. 7 D.3 Existing Load and Percent Share of Loading for Budget Ratios and Pollution Reduction Credit ................ 8 E. BMPs Selected to Achieve the Minimum Required Reductions in Pollutant Loading .... 10 E.1. Background Information and Rationale ....................................................................................................... 10 E.2. BMP Sediment Reduction Calculations ......................................................................................................
    [Show full text]
  • United States Department of the Interior Geological Survey, Water Resources Division Harrisburg, Pennsylvania
    AN INVENTORY OF SUSPENDED SEDIMENT STATIONS AND TYPE OF DATA ANALYSIS FOR PENNSYLVANIA STREAMS United States Department of the Interior Geological Survey, Water Resources Division Harrisburg, Pennsylvania Open-File Report 1972 AN INVENTORY OF SUSPENDED SEDIMENT STATIONS AND TYPE OF DATA ANALYSIS FOR PENNSYLVANIA STREAMS 1947-70 By Arthur N. Ott and Allen B. Commings United States Department of the Interior Geological Survey, Water Resources Division Harrisburg, Pennsylvania Open-File Report 1972 CONTENTS Page Introduction5 1 Published sediment data 5 4 Measurement and analysis of suspended sediment samples 5 4 Definition of terms 5 4 Station name and location 5 4 Station number 5 4 Drainage area 5 4 Period of record 5 5 Sampling frequency 5 5 Sediment transport curve 5 5 Sediment concentration frequency 5 5 Sediment trend analysis 5 5 Particle size 5 5 Alphabetical list of sediment stations with type of sediment data available 5 8 List of sediment stations in downstream order 5 19 References 5 24 ILLUSTRATIONS Figure 1. Map showing location of suspended sediment stations in Pennsylvania, 1947-70, exclusive of the lower Delaware River basin 5 2 2.Map showing location of suspended sediment stations in the lower Delaware River basin, Pennsylvania, 1947-705 3 3.Sediment transport curve with selected data showing relation of sediment discharge to water discharge, Juniata River at Newport, 1951-705 6 4.Double mass accumulation of annual suspended sediment discharge versus water discharge, Juniata River at Newport, 1951-705 7 II AN INVENTORY OF SUSPENDED SEDIMENT STATIONS AND TYPE OF DATA ANALYSIS FOR PENNSYLVANIA STREAMS, 1947-70 Arthur N.
    [Show full text]
  • (Npl) Listing Package
    NPL LISTING PACKAGE FOR THE LOWER DARBY CREEK AREA DELAWARE AND PHILADELPHIA COUNTIES, PENNSYLVANIA June 2001 U.S. Environmental Protection Agency Region III 1650 Arch Street Philadelphia, PA 19103 AR300147 1.0 INTRODUCTION Contained within this listing package are two complete documentation records for two separate sites. These sites are being grouped into a single listing consistent with CERCLA 105(a)(8)(B). The sections below present general information about the listing, the location of the sites, operations at the sites, the environmental conditions of Lower Darby Creek, other potentials sources of contamination to Lower Darby Creek and the geology of the area. General Information The Lower Darby Creek Area (LDCA) site as originally proposed consisted of multiple sources releasing or potentially releasing into the waters of Darby Creek and other nearby streams: the Clearview Landfill (Source 1), the Industrial Drive properties (Source 2), the Oily Sludge Disposal Area (Source 3), the Catalyst Disposal Area (Source 4), the former Delaware County Sewage Treatment Plant (Source 5), the former Delaware County Incinerator (Source 6), and the Folcroft Landfill and Annex (Source 7). After considering the public comments received for the LDCA (see the Support Document for the Revised National Priorities List Final Rule-June 14, 2001 for the public comments received), EPA decided to promulgate the LDCA as a grouping of two separate sites, the Clearview Landfill site and the Folcroft Landfill and Annex site, for administrative purposes. The single NPL listing facilitates the management of the investigation and cleanup of the releases to Darby Creek, which have affected or might affect the same portion of the creek, which includes fisheries, wetlands, and other sensitive environments, including the John Heinz National Wildlife Refuge (NWR) at Tinicum.
    [Show full text]