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HomeMy WebLinkAbout2019-11-01 Basic SWPPP Lakeview Health Services West End Heights 709 West Court Street Basic Stormwater Pollution Prevention Plan City of Ithaca Tompkins County, New York Prepared for: Lakeview Health Services 600 Washington Street Geneva, NY 14456 Prepared by: T.G. Miller P.C. 203 North Aurora Street Ithaca, New York 14850 (607) 272-6477 November 1, 2019 TABLE OF CONTENTS PROJECT DESCRIPTION 1 STORMWATER DRAINAGE 1 CONTROLS 2 MAINTENANCE AND INSPECTIONS 3 CERTIFICATION AND COMPLIANCE WITH LOCAL REGULATIONS 4 CERTIFICATION FORMS CONTRACTOR/SUBCONTRACTOR CERTIFICATION FORM 1 FIGURES EXISTING GROUND COVER MAP 1 OF 2 PROPOSED GOUND COVER MAP 2 O F 2 CONSTRUCTION DRAWINGS EXISTING CONDITIONS PLAN C101 EROSION AND SEDIMENT CONTROL PLAN C102 UTILITY PLAN C103 DETAILS C201 Lakeview Health Services - West End Heights Basic Stormwater Pollution Prevention Plan T.G. Miller, P.C. 1. November 1, 2019 PROJECT DESCRIPTION The project is located on 4 currently developed parcels of land on West Court Street and North Meadow Street described as Tax Map Parcels 59.-2-9, 10, 12 and 13. The project consists of the demolition of the buildings on all 4 parcels and removal of all existing site improvements. Proposed site improvements include vehicular and pedestrian access, utility extensions and relocations, storm water collection, landscaping and lighting. Redevelopment includes the construction of a multi-story apartment building. The project will disturb a total of 0.94 acres of land, thus requiring the preparation of a Basic Stormwater Pollution Prevention Plan (SWPPP) in compliance with Chapter 282 of the City of Ithaca Code. Conformance with the NYSDEC SPDES General Permit (GP-0-15-002) is not applicable. The stormwater management objectives presented in this SWPPP focus primarily on controlling erosion and sedimentation during construction, installing stormwater collection systems and stabilization of the site. All areas of the site have been previously disturbed and the on-site soils are best described as man- made. There is no evidence of any wetlands located on or adjacent to the site. Stormwater runoff from the site drains to the City of Ithaca storm sewer collection system in West Court Street and the NYSDOT system in North Meadow Street. The outfall from this portion of the system is at the Cayuga Inlet to the northwest. The site is not located in a mapped 100-year floodplain. STORMWATER DRAINAGE Existing Conditions Storm water runoff from the site drains to perimeter roadway drainage systems in West Court and North Meadow Streets. A portion of the properties drain to a lawn area to the south of West Court Street where runoff presumably infiltrates. 28,907 square feet, or approximately 71%, of the site is currently impervious (Sheet 1 of 2). According to the FEMA Firm Map dated 1981, the project site is located in the 500-year flood boundary. Existing (pre-developed) site conditions and drainage facilities are shown on Sheet C101 of the attached drawings. Proposed Conditions The total site disturbance will be under one acre. Under the City stormwater requirements, disturbances of more than ¼ acre and less than 1.0 acres, that do not create more than ½ acre of impervious cover will require a Basic Stormwater Pollution Prevention Plan (SWPPP) be prepared including temporary erosion and sediment control practices. The proposed stormwater management approach was to closely match the existing drainage patterns. As such an infiltration test was done in the existing lawn area to confirm suitable soils for infiltration. The infiltration test resulted in no infiltration rendering the site unsuitable for the installation of dry wells or other infiltration practices. Stormwater will be collected by an on-site stormwater system and be piped north to the existing drainage system in West Court Street. Surface runoff from small portions of the site will drain to the West Court and North Meadow Street storm sewers by means of overland flow. A total of 29,729 square feet, or approximately 73.0%, of the proposed site will be impervious cover after construction Lakeview Health Services - West End Heights Basic Stormwater Pollution Prevention Plan T.G. Miller, P.C. 2. November 1, 2019 is complete. The 822 square foot increase in impervious cover represents a minor increase in runoff to the City system (Sheet 2 of 2). The proposed site and drainage improvements are shown on Sheet C103 of the attached drawings. Better Site Design In accordance with City Code, projects disturbing less than one acre must apply at least two site design practices from a list of techniques described in the April 2008 NYSDEC publication titled “Better Site Design”. Given the project is redeveloping a previously disturbed site, it inherently employs Practice 4 – Locating Sites in Less Sensitive Areas. Since the proposed building is multi- story, the project also employs Practice #10 – Building Footprint Reduction. CONTROLS Erosion and Sediment Controls The proposed temporary erosion and sediment control practices, and a detailed sequencing of the major construction activities, are as indicated and described on the attached Erosion and Sediment Control Plan (Sheet C102) drawing. Other Controls Waste Disposal All waste materials will be collected and stored in securely lidded metal dumpsters rented from a local waste management company which must be a solid waste management company licensed to do business in Tompkins County. The dumpsters will comply with all local and state solid waste management regulations. All trash and construction debris from the site will be deposited in the dumpsters. The dumpsters will be emptied a minimum of twice per week or more often if necessary, and the trash will be hauled to a landfill approved by New York State. No construction waste materials will be buried on site. All personnel will be instructed regarding the correct procedures for waste disposal. Notices stating these practices will be posted in the job site construction office trailer, and the job site superintendent will be responsible for seeing that these procedures are followed. Sanitary Waste All sanitary waste will be collected from portable units a minimum of two times per week by a licensed portable facility provider in complete compliance with local and state regulations. Off-Site Vehicle Tracking A stabilized construction exit (Tracking Pad) will be provided to help reduce vehicle tracking of sediments. The paved streets adjacent to the site entrance will be inspected daily and cleaned with vacuum equipment as necessary to remove any excess mud, dirt, or rock tracked from the site. Dump trucks hauling material from the construction site will be covered with a tarpaulin. The job site superintendent will be responsible for seeing that these procedures are followed. Hazardous Substances and Hazardous Waste All hazardous waste materials will be disposed of by the Contractor in the manner specified by local, state, and/or federal regulations and by the manufacturer of such products. Site personnel will be instructed in these practices by the job site superintendent, who will also be responsible for seeing that these practices are followed. Material Safety Data Sheets (MSDS's), for each substance with hazardous properties that is used on the job site, will be obtained and used for the proper management Lakeview Health Services - West End Heights Basic Stormwater Pollution Prevention Plan T.G. Miller, P.C. 3. November 1, 2019 of potential wastes that may result from these products. An MSDS will be posted in the immediate area where such product is stored and/or used and another copy of each MSDS will be maintained in the SWPPP file at the job site construction trailer. Each employee who must handle a substance with hazardous properties will be instructed on the use of MSDS sheets and the specific information in the applicable MSDS for the product he/she is using, particularly regarding spill control techniques. Any spills of hazardous materials which are in quantities in excess of Reportable Quantities as defined by EPA regulations shall be immediately reported to the EPA National Response Center 1- 800-424-8802. In order to minimize the potential for a spill of hazardous materials to come into contact with stormwater, the following steps will be implemented: · All materials with hazardous properties (such as pesticides, petroleum products, fertilizers, detergents, construction chemicals, acids, paints, paint solvents, cleaning solvents, additives for soil stabilization, concrete curing compounds and additives, etc.) will be stored in a secure location, under cover, when not in use. · The minimum practical quantity of all such materials will be kept on the job site. · A spill control and containment kit (containing, for example, absorbent such as kitty litter or sawdust, acid neutralizing powder, brooms, dust pans, mops, rags, gloves, goggles, plastic and metal trash containers, etc.) will be provided at the storage site. · All of the products in a container will be used before the container is disposed of. All such containers will be triple-rinsed with water prior to disposal. The rinse water used in these containers will be disposed of in a manner in compliance with state and federal regulations and will not be allowed to mix with stormwater discharges. · All products will be stored in and used from the original container with the original product label. · All products will be used in strict compliance with instructions on the product label. · The disposal of excess or used products will be in strict compliance with instructions on the product label. The building is known to contain asbestos and will be demolished under local, state and federal regulations. MAINTENANCE AND INSPECTIONS The applicant or developer of the land development activity or his/her representative shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the applicant or developer to achieve compliance with the conditions of these regulations. The Stormwater Management Officer (SMO) may require such inspections as necessary to determine compliance with the SWPPP and may either approve that portion of the work completed or notify the applicant wherein the work fails to comply with the requirements of the regulations and the SWPPP as approved. The applicant shall notify the SMO when any of the following occurs: · Commencement of construction. · Commencement of installation of sediment and erosion control measures. · Commencement of site clearing. · Commencement of rough grading. · Close of the construction season. · Completion of final landscaping. · Successful establishment of landscaping in public areas. Lakeview Health Services - West End Heights Basic Stormwater Pollution Prevention Plan T.G. Miller, P.C. 4. November 1, 2019 Additionally, the City of Ithaca may conduct random inspections during any phase of construction. If any violations are found, the applicant and developer shall be notified in writing of the nature of the violation and the required corrective actions. No further work shall be conducted, except for site stabilization, until any violations are corrected and all work previously completed has received approval by the SMO. CERTIFICATION AND COMPLIANCE WITH LOCAL REGULATIONS Contractor Certification The Contractor will review and comply with all conditions of Chapter 282 of the City Code. Each contractor and subcontractor who will be involved in soil disturbance and/or stormwater management practice installation shall sign and date a copy of the attached certification (Form 1) before undertaking any land development activity. A copy of all SWPPP documents shall be retained at the site of the land development activity during construction from the date of initiation of construction activities to the date of final stabilization. Engineer’s Certification on Compliance with Local Regulations This Basic Stormwater Pollution Prevention Plan reflects the City of Ithaca’s requirements for stormwater management and erosion and sediment control. Name: Andrew J. Sciarabba, P.E. Title: Vice President Acting as Professional Engineer for: T.G. Miller, P.C. Signature: Date: 11/1/2019 FORM 1 CONTRACTOR/SUBCONTRACTOR CERTIFICATION Construction Site: Lakeview Health Services – West End Heights Project City of Ithaca, Tompkins County, New York CONTRACTOR/SUBCONTRACTOR'S CERTIFICATION: "I certify under penalty of law that I understand and agree to comply with the terms and conditions of the Basic Stormwater Pollution Prevention Plan (SWPPP). I also understand that it is unlawful for any person to cause or contribute to a violation of water quality standards." CONTRACTOR Name: Signature: (Print) Title: Date: Company Name: Phone Number: Address: SUBCONTRACTOR Name: Signature: (Print) Title: Date: Company Name: Phone Number: Address: SUBCONTRACTOR Name: Signature: (Print) Title: Date: Company Name: Phone Number: Address: Note: Provide addition forms as necessary for addition contractors or subcontractors. ©NOT FOR CONSTRUCTION 387.0 387.0387.0 386.5 386.0 386.5 386.5 387.0 387.5387.0386.5386.5386. 5 386.0 ©NOT FOR CONSTRUCTION 387.0 38 7 . 0 387.0 386.5 386.0 386.5 386.5 387.0 387.5387.0386.5386.5386. 5 386.0 ©NOT FOR CONSTRUCTION · · · ©NOT FOR CONSTRUCTION