York County Soil And Water Conservation District

1y ago
3 Views
1 Downloads
2.49 MB
47 Pages
Last View : 1m ago
Last Download : 3m ago
Upload by : Pierre Damon
Transcription

York County1Soil and WaterConservation District

Figure 1‐1. The Goodall Brook Watershed.i

Goodall Brook Watershed Based Management PlanPrepared for the City of Sanford, Maineby FB Environmental Associates,York County Soil and Water Conservation District andthe Maine Department of Environmental ProtectionDecember 2014ii

Table of ContentsAcknowledgements . vi1.0Executive Summary . 11.1Project Overview . 11.2Goodall Brook and its Watershed . 11.3Existing Conditions and Threats to Water Quality .11.4Why Develop a Watershed Plan? . 21.5Water Quality Goals .21.6Recommended Management Strategies . 31.7Plan Implementation and Funding . 32.0Purpose and Background . 42.1Why is the plan needed? .42.2How was the plan developed? . 42.3Who was involved? . 52.4Who should read this plan? . 53.0 Description of the Watershed . 53.1Location . 53.2Population and Demographics . 53.3Land Use and Land Cover . 63.4Physical Features . 83.5Land Resources . 83.6Water Resources . 104.0 Watershed Conditions . 114.1Applicable Water Quality Standards . 114.2Available Water Quality Data . 114.3Summary of Goodall Brook Water Quality Data . 175.0 Pollution Sources and Threats to Water Quality . 185.1Stream Alterations and Habitat Impacts . 185.2Stormwater Runoff from Impervious Surfaces . 215.3Bacteria Contamination . 235.4Identification of Critical Areas . 23iii

6.0 Watershed Plan Goals, Strategies and Action Plan . 266.1 Watershed Plan Goals . 266.2 Management Strategies . 276.3 Action Plan . 316.4 Plan Oversight . 337.0 Water Quality Targets and Reductions . 337.1 Pollutant Load Reduction Targets . 337.2 Load Reduction Estimates . 357.3 Indicators to Measure Progress . 368.0 Plan Implementation . 378.1 Estimated Costs and Technical Assistance Needed . 378.2 Monitoring Plan . 388.3 Evaluation Plan . 399.0 References . 40AppendicesAppendix A: EPA Nine Elements Required for Watershed‐based PlansAppendix B: Supplemental Water Quality DataAppendix C: Goodall Brook Fluvial Geomorphology Study by Field Geology ServicesAppendix D: Goodall Brook TMDL (ME DEP, 2012)Appendix E: Map of Goodall Brook Stormwater CatchmentsAppendix F: List of Priority Structural BMP Retrofitsiv

FiguresFigure 1‐1. The Goodall Brook Watershed . iFigure 3‐1: Land Use in the Goodall Brook Watershed . 7Figure 3‐2: Impervious cover in the Goodall Brook Watershed. 9Figure 4‐1: Map of Project Monitoring Sites . 12Figure 4‐2: Goodall Brook Dissolved Oxygen Monitoring Data in 2012 . 15Figure 4‐3: Goodall Brook Specific Conductance Data (September – October 2012) . 17Figure 5‐1. Channel Restrictions along Goodall Brook . 20Figure 5‐2. Goodall Brook 2009 Neighborhood Source Assessment and Hot Spot Inventory Survey Sectors . 21Figure 5‐3: Map of Proposed Stormwater Retrofit Projects . 25TablesTable 3‐1. Population Demographics in Sanford, Maine (US Census Bureau, 2010) . 6Table 3‐2. Land Use Data for the Goodall Brook Watershed . 6Table 4‐1: Goodall Brook Applicable Water Quality Standards (Class B) (MDEP, 2010). 11Table 4‐2: ME DEP Biomonitoring Data (2004) . 13Table 4‐3: ME DEP E.coli Data from 10/17/2012 and Six Sampling Events in 2013 . 14Table 4‐4: Dissolved Oxygen Summary for Goodall Brook Monitoring Stations . 16Table 5‐1: Potential and Confirmed Hotspots from the 2009 Hotspot Inventory. 22Table 6‐1: Goodall Brook Watershed Management Plan Action Plan . 31Table 7‐1: Maximum measures and geometric means for E. coli in five sampling sites on Goodall Brook. 35Table 7‐2: Structural stormwater Best Management Practices expected pollutant removal efficiency . 36v

AcknowledgementsCharlie Anderson, Public Works, City of SanfordJoe Anderson, YCSWCDWhitney Baker, FB EnvironmentalLuke Beals, CitizenMary Blood, Bauneg Beg Lake AssociationMarcel Blouin, Parks & Recreation, City of SanfordAndre Broussard, Sanford Sewerage DistrictTom Burns, GIS Mapping and AnalysisMike Casserly, Engineering, City of SanfordJeremy Deeds, FB EnvironmentalJeff Dennis, Maine DEPBrian Desrocher, Parks & Recreation, City of SanfordEmily DiFranco, FB EnvironmentalChris Feurt, Wells ReserveJohn Field, Field Geology ServicesTheresa Galvin, YCSWCDWendy Garland, Maine DEPLarry Gaudreau, Bauneg Beg Lake AssociationJim Gulnac, Planning, City of SanfordMike Hanson, Sanford Sewerage DistrictMatthew Hill, Public Works, City Of SanfordPhillip Jacques, Maine DEPBud Johnston, Mousam Way Regional Trust BethMarass and students, Sanford High SchoolCynthia Peedin, Waban ProjectsDana Peterson, Bauneg Beg Lake AssociationAnn Rossignol, Waban ProjectsPaula Simpson, Treasurer, City of SanfordPeter Smith, Public Works, City of SanfordLeon Tsomides, Maine DEPDavid Waddell, Maine DEPAll who attended the community kick‐off meetingFunding for this project, in part, was provided by the U.S. Environmental Protection Agency under Section 319 of the CleanWater Act. The funding is administered by the Maine Department of Environmental Protection in partnership with EPA.vi

1.0 Executive Summary1.1Project OverviewThe Goodall Brook Watershed Management Plan was developed through a locally‐supported planningprocess. The project was initiated by the City of Sanford and funded by Maine Department of EnvironmentalProtection (DEP) under Section 319 of the Clean Water Act. Plan development was coordinated by FBEnvironmental Associates (FBE), York County Soil and Water Conservation District (YCSWCD), the City ofSanford, Maine DEP and a Technical Advisory Committee (TAC) composed of watershed stakeholders includingengineers, environmental professionals, and residents. Field Geology Services provided technical assistance.1.2Goodall Brook and its WatershedThe Goodall Brook watershed covers 0.76 square miles (489 acres) in the City of Sanford in the southwestcorner of the State of Maine (Figure 1‐1). Goodall Brook’s headwaters are located in a forested area alongHanson Ridge Road. At Grandview Avenue, the stream is diverted into a series of pipes and then flowsnearly 2000 feet underground until it emerges at Lebanon Street. It then flows southeast through Sanfordand then into a large forested wetland before flowing into the Great Works River, which then flows intoBauneg Beg Lake in Sanford and North Berwick, ME.The Goodall Brook watershed is predominantly developed, with 321 acres (66%) of the watershed consistingof residential or commercial land uses. There are approximately 132 acres (27%) of forest land in thewatershed, located primarily in the northern portion of the watershed. Impervious cover totals approximately23.7% (138 acres) of the Goodall Brook watershed. Studies have shown that the percentage of imperviouscover (% IC) in a watershed strongly affects the health of aquatic systems, because land surfaces that blockinfiltration of rainwater can lead to increased amounts of stormwater runoff into gutters, untreated stormsewers or directly to streams. In general, surface water quality declines as imperviousness exceeds 10% ofwatershed area (CWP, 2003).1.3 Existing Conditions and Threats to Water QualityGoodall Brook was first assessed by the Maine DEP in 2004,and it was determined that the stream does not meet itsClass B aquatic life criteria. As a result, DEP listed GoodallBrook as impaired on its 2012 303(d) list (Maine DEP, 2012).Subsequent monitoring also indicates that the brook does notmeet applicable criteria for dissolved oxygen or bacteriaconcentrations.The 303(d) list is a list of all waters that donot meet water quality standards, and aretherefore classified as “impaired”. The list isnamed for the section of the Federal CleanWater Act that requires states (Maine DEP)to provide a list of impaired waters to the USEPA every two years.The lack of suitable habitat and flow velocity is likely the primary reason that Goodall Brook does not meetState water quality standards. Historic dredging, widening and straightening of the stream channel has left themajority of Goodall Brook as a wide, slow moving stream with thick, soft sediments along the bottom. This typeof habitat is not able to support the diversity of aquatic life necessary to meet Class B standards for aquaticlife in the stream.The problems associated with stream alteration are compounded by the high impervious cover (IC) inthe watershed. IC is the term used to categorize all surfaces that do not allow water to infiltrate naturally intosoils. IC includes hard surfaces such as roads, driveways, parking lots and roof tops – all of which alter thedynamics of watershed hydrology by increasing the amount and energy of stormwater and the pollutants it1

carries. The combination of pollutants in stormwater, including excess sediment and nutrients, contribute toloss of habitat and the impairment of aquatic life, bacteria and dissolved oxygen in streams.1.4 Why Develop a Watershed Plan?A Watershed Management Plan helps identify problems,priorities and actions that are needed to improve the waterquality of a lake, river, stream or coastal water. Since eachwatershed is unique, plans must be tailored to address thespecific issues and concerns of both the community and thestream.A Watershed Management Plan servesas a road map to stream restoration,providing a guide to the actions,scheduling, monitoring, and costs alongthe route to meeting water qualitystandards.A watershed plan provides an opportunity for stakeholders to work together to prioritize, schedule, and fundrestoration activities. It is a planning document recognized by the U.S. Environmental Protection Agency (USEPA) and Maine DEP, and it needs to be completed before groups can apply for DEP’s 319 grant funding toimplement a plan. (See Appendix A for the nine required elements for watershed‐based plans.)In addition to its interest in restoring Goodall Brook, the City of Sanford also views the Goodall Brook Plan asa way to be proactive with its stormwater and water resources management. Currently, Sanford does not fallunder federal and state regulations for stormwater management. However, it is anticipated that the MunicipalSeparate Storm Sewer Systems (MS4) permit will eventually include Sanford, and watershed efforts startednow can be gradually and economically phased in over time. Further, proactive efforts by the City will helpprevent citizen lawsuits and EPA petitions that have been filed in other communities to force restoration ofimpaired waters. Perhaps most importantly, the Goodall Brook project serves as a model and pilot for futureCity‐wide efforts to protect and restore the Sanford’s abundant water resources.1.5Water Quality GoalsProject stakeholders met numerous times throughout the watershed planning process and developedseveral overriding goals for Goodall Brook. The goals and associated objectives include:Improve conditions in Goodall Brook so that it meets Class B water quality standards. Restore the macroinvertebrate community to one that meets aquatic life use criteriaImprove dissolved oxygen levels in the streamReduce the levels of E. coli bacteria in the streamPrevent future water quality impacts to Goodall Brook and downstream waters, including Bauneg Beg Lake. Provide improved stormwater treatment from new and existing developmentImplement municipal ordinances that guide new development and reduce stream impactsCoordinate with partners to protect important conservation lands and address future potential impactsBuild community awareness and support for the restoration and protection of Goodall Brook and theCity’s other water resources. Develop and carry out public outreach programs to raise awareness about pollution issues and individualactions to reduce impacts to water qualityInvolve local schools in stream monitoring and restoration activitiesForm a Goodall Brook committee to guide plan implementation2

1.6 Recommended Management StrategiesThe Goodall Brook W a t e r s h e d Management Plan includes a number of strategies to achieve the waterquality goals and objectives listed above. Strategies include: Installation of Stream Habitat Improvements,including streamside buffer plantings and in‐stream habitat restoration projects such as thestrategic addition of logs to improve thestream’s aquatic community (also referred to asmacroinvertebrates) and dissolved oxygen. s, including structural(retrofits and installations of tree box filters,level spreaders, etc.) and non‐structuralpractices (educational campaigns, ordinances topromote Green Infrastructure, etc.) to addresshabitat, bacteria and dissolved oxygen problemsin the stream. Trees and logs in this section of Goodall Brook providehabitat for aquatic organisms.Detection and Elimination of Bacteria Sources, including sewer camera inspections, monitoring andrepair/replacement of faulty sewer lines, and public outreach about proper pet waste disposal.1.7 Plan Implementation and FundingA Goodall Brook Plan Implementation Committee will be formed to oversee and guide the implementation ofthe Goodall Brook Watershed Plan. The committee will be set up through the City Council and will include Citystaff, representatives from the Planning Board and City Council, Bauneg Beg Lake Association and otherinterested stakeholders. Continued support will also be provided by Maine DEP and YCSWCD staff.The implementation phase of this plan will take place over 10 years (2015‐2025), and costs will be spread outover that time period. Restoration of Goodall Brook will require a coordinated implementation programsupported by private, state, City, and federal funding. The watershed action plan (Section 6.3) lists andprioritizes actions to address the water quality impairments in Goodall Brook. Possible funding sources arelisted for each action item as well.The total cost of the plan over the next decade is estimated between 300,000 and 450,000. An estimated 50%of this cost is associated with City staff time spent on the project. As such, many of the items in the action planwill be carried out by City staff with no added costs to the City. Grant funding will also be sought out to help fundmore expensive items in the plan and provide cost‐share opportunities to improve stream habitat orretrofit existing impervious surfaces with improved stormwater treatment systems. Maine DEP’s 319 grants willbe pursued as a significant funding source for the plan.3

2.0 Purpose and Background2.1 Why is the plan needed?Goodall Brook has been identified as not meeting state water qualitystandards for aquatic life. This means that the stream is not able to supportthe normal community of aquatic animals that should be living there. Theplan and State standards focus primarily on the aquatic insects (ormacroinvertebrates) that are the base of the food chain and that spendpart or all of their life cycles in the stream. The cause of the impairment toGoodall Brook’s macroinvertebrate community is varied. Stressors toGoodall Brook’s water quality include past stream modification and theresulting poor aquatic habitat, slow water velocity and poor variability inflow patterns. In addition, the stream is also impacted by excess pollutantssuch as the nutrient, phosphorus, and bacteria. The purpose of this plan isto develop a road map to restore Goodall Brook to a stream that meets allstandards for water quality.Aquatic Life in Goodall ) tell a lot about astream. If sensitive organisms such ascaddisflies (below) and stoneflies areabundant, then water quality is good.If only worms and other pollution‐tolerant organisms are found, thispoints to problems with stream habitatand/or water quality.This plan was developed to align with EPA and DEP guidance so thatSanford will be eligible to receive future grants to help implement the planand restore Goodall Brook. (See Appendix A for EPA’s list of required planGoodall Brook supports a healthy bugelements and where they can be found in the Plan.) In addition, the City of community in its lower reaches, but theSanford also views the Goodall Brook Watershed Management Plan as a upper reach is considered impaired.way to be proactive with its stormwater and water resourcesmanagement. Currently, Sanford does not fall under federal and state regulations for stormwatermanagement. However, it is anticipated that the Municipal Separate Storm Sewer Systems (MS4) permitrequirements will eventually apply to Sanford, and watershed efforts started now can be gradually andeconomically phased in over time. Further, proactive efforts by the City will help prevent citizen lawsuits andEPA petitions that have been filed in other communities to force restoration of impaired waters. Perhaps mostimportantly, the Goodall Brook project serves as a model and pilot for future City‐wide efforts to protect andrestore the Sanford’s abundant water resources.2.2 How was the plan developed?This plan was developed using a science‐based,watershed approach. Water quality monitoring and fieldassessments helped identify specific problems indifferent parts of Goodall Brook. The watershed,including current and future land uses, was then evaluatedto determine existing and potential sources of pollution.Local stakeholders were actively involved throughout theproject and helped select management strategies andactions that will be implemented to remedy identifiedproblems in the watershed.Watershed residents attend a project kick‐off event.The Goodall Brook Steering Committee and OutreachCommittee provided input on project startup activities and helped plan a public kickoff meeting. In June 2013,4

about 15 people attended the community kickoff meeting to hear about the project and provide inputthrough a keypad voting activity. In November 2012, Sanford High School students conducted an interceptsurvey to assess public awareness about water quality issues and Goodall Brook. The project’s TechnicalAdvisory Committee (TAC) met numerous times throughout the project and used a series of iterative steps toreview monitoring data, identify and prioritize problems, define management goals, and develop protection andremediation strategies. In December 2014, the draft plan was provided to stakeholders and presented to theCity of Sanford for review, and feedback was incorporated into the final plan.2.3 Who was involved?The Goodall Brook Watershed Management Plan was initiated by the City of Sanford and funded by the MaineDEP and US EPA under Section 319 of the Clean Water Act. Project collaborators included the York County Soiland Water Conservation District (YCSWCD), Maine DEP, Bauneg Beg Lake Association (BBLA), City ofSanford and interested citizens. YCSWCD served as the project manager, and FB Environmental wascontracted to participate in the plan development process and to help draft t h e watershed managementplan. Field Geology Services provided technical assistance.2.4 Who should read this plan?Because the Goodall Brook Watershed Management Plan defines existing and future problems that need to beaddressed, any group that influences or is affected by water quality and habitat management and land‐usedecisions should read this report. The City of Sanford and local groups in and around the Goodall Brookwatershed should use this plan as a foundation for local action‐from stream restoration projects todevelopment ordinance changes. State and federal agencies can use this plan to enhance understanding oflocal watershed conditions, and as a basis for supporting future grant funding and monitoring efforts.3.0 Description of the Watershed3.1 LocationThe Goodall Brook watershed covers 0.76 square miles (489 acres) in the City of Sanford in the southwestcorner of the State of Maine (Figure 1‐1). Goodall Brook is a small tributary to the north branch of the GreatWorks River and begins in a forested area along Hanson Ridge Road. A t the corner of Douglas Street andGrandview Avenue, the stream enters a pipe and travels underground for 2000 feet. It emerges at LebanonStreet and then flows southeast parallel to the Little League fields at Benton Park, passes under Roberts St., andflows adjacent to the baseball field at Goodall Park. After the brook passes under Berwick Rd. it flows into alarge forested area where it continues adjacent to St. Ignatius Cemetery and passes several abandoned sandpits. It then continues into a large forested wetland before flowing into the Great Works River betweenDaylight Avenue and Twombley Road near Margaret Chase Smith Elementary School in Sanford (Figure 1‐1).3.2 Population and DemographicsGoodall Brook is located in York County in southern Maine. As of 2010, York County’s population was 197,131,an increase of 10,389 people (6%) since 2000. Thirty‐three percent of Maine’s total population growth over thelast six years has occurred in York County. The City of Sanford is the seventh largest municipality in Mainewith population of 20,798 in 2010. The 2010 population was a small increase from the 1990 population of20,463, but a slight decrease from the 2000 population of 20,806. From 1990 to 2010, the average annualgrowth rate for Sanford was a small 0.1%, which is much less than the 0.91% for York County (SMRPC,5

2013). Population demographics for Sanford are listed in Table 3‐1 (below).Table 3‐1: Population Demographics in Sanford Maine (US Census Bureau, 2010)Populationunder theage of 19Populationaged 20‐24Populationaged 25‐44Populationaged 45‐64Populationover theage of 65MedianAgeMedianHouseholdIncomePer 5%38 44,217 20,95018%Sanford consists of diverse neighborhoods, natural habitats and resources, rural landscapes, and commercialbusinesses. In decades past, it was a thriving mill town with mills lining the banks of the Mousam River. Sanford,today, continues development toward a more modern economy, and development in the City is increasingeach year. The City of Sanford issued 772 building permits between 2000 and 2009 (SMRPC, 2013). Like manyother mill towns in Maine, Sanford is working toward redeveloping mill buildings, and creating businessopportunities within the City.3.3 Land Use and Land CoverApproximately two‐thirds of the landcover in the Goodall Brook watershed isdeveloped,withhighintensitydevelopment (83 acres), medium intensitydevelopment (76 acres), low intensitydevelopment (34 acres), developed openspace (128 acres) and roads (4 acres).There are approximately 132 acres (27%)of forest in the watershed, primarily inthe northern portion of the watershed.Scrub/shrub land cover covers about 2%(12 acres), agricultural land includingcrops, hay land and pasture covers lessthan 1.5% (7 acres), and the remaining 3%is forested wetland (14 acres)(Figure 3‐1,Table 3‐2).Land UseCategoryAcres inWatershedPercent ofWatershedDeveloped, High Intensity8317%Developed, Low Intensity347%Developed, Medium Intensity7615%Developed, Open Space12826%Road/Runway41%Evergreen Forest123%Mixed Forest6112%Deciduous Forest5912%Scrub/Shrub112%Wetland Forest143%Cultivated Crops20%54891%100%Land Cover ClassUrban &DevelopedForest &NaturalVegetationAgriculturePasture/HayTotalTable 3‐2. Land Use data for the Goodall Brook watershed.Areas of development are mainlyresidential in varying intensities and largely served by the City sewer system. These areas contain manyimpervious surfaces and lawns. High intensity development is concentrated along major roadways includ

Brian Desrocher, Parks & Recreation, City of Sanford Emily DiFranco, FB Environmental Chris Feurt, Wells Reserve John Field, Field Geology Services Theresa Galvin, YCSWCD Wendy Garland, Maine DEP Larry Gaudreau, Bauneg Beg Lake Association Jim Gulnac, Planning, City of Sanford

Related Documents:

New York Buffalo 14210 New York Buffalo 14211 New York Buffalo 14212 New York Buffalo 14215 New York Buffalo 14217 New York Buffalo 14218 New York Buffalo 14222 New York Buffalo 14227 New York Burlington Flats 13315 New York Calcium 13616 New York Canajoharie 13317 New York Canaseraga 14822 New York Candor 13743 New York Cape Vincent 13618 New York Carthage 13619 New York Castleton 12033 New .

3 Objectives of Soil Mechanics To perform the Engineering soil surveys. To develop rational soil sampling devices and soil sampling methods. To develop suitable soil testing devices and soil testing methods. To collect and classify soils and their physical properties on the basis of fundamental knowledge of soil mechanics. To investigate the physical properties of soil and

hydraulic energy to shear and blend the soil in situ, creat-ing a soil cement mix of the highest quality. Our high en-ergy jet mixing system has allowed us to extend soil mix-ing to stiff, highly plastic clays and weathered rock, soils SOIL MIXING TECHNOLOGY — SINGLE AXIS Benefits of Deep Soil Mixing Efficient and cost effective method

Soil Map Units A soil map unit is a collection of areas defined and named the same in terms of their soil components (e.g., series) or miscellaneous areas or both –Fallsington sandy loam, 0 to 2% slopes –Marr-Dodon complex, 2 to 5% slopes Soil map units are the basic unit of a soil map Each soil map unit differs in some

nutrients. Particularly, soil air is needed by many of the microorganisms that release plant nutrients to the soil. An appropriate balance between soil air and soil water must be maintained since soil air is displaced by soil water. Achieving Balanced Nutrition Several nutrients compete with each other over uptake by the plant, so keeping

Chatham County Chattahoochee County Chattooga County Cherokee County Clarke County Clay County Clayton County Cobb County Coffee County Colquitt County Columbia County Cook County Coweta County Crisp County 320 6 2 1 2 4 1 10 12 6 4 43 1 1 3 2 4 11 4 1 5 6 6 5 60 1 1 7 22 1 58 51 7 3 8 4 6 5 19.80% .37% .12% .06% .12% .25% .06% .62% .74% .37% .

The Orange County Soil & Water Conservation District (District) is one of 58 such districts in New York State. These districts provide services and fund projects related to the conservation of soil and water resources, the improvement of water quality, the control and prevention of soil ero

Introduction to Soil Science Martin Šanda -B673 martin.sanda@fsv.cvut.cz importance of soil, soil formation soil substances, flow of water in soil terminology, classification economical evaluation of soils -BPEJ. Ecological functions of soil Supports growthof plants and live of