Meeting minutes regarding MTA subway station flooding and stormwater issues,

NYC 9/11 Public Portal Document

MTA Priority Locations and other areas of flooding concern NYC DEP Meeting - 6/08 Initial ILocation Issue I Short-term goal I Permanent solution DOT status DEP status I Next step(s)/Responsibility priority? N ; NYCT - Grand Central at Sewer back flow. DEP clean and maintain sewer. NYCT install check valve. DEP inspected and cleaned 42nd None. Park Ave.-TSQ Shuttle Location where subway /Grand central 3'-6” dia. drainage is directly connected to DEP sewer. . — ——-------- -- ——-- - — -J.— ———.——— --------------- ------------------ — — — — — - • ' — •

N NYCfrisTteStreet- ' Sewer Back Flow. DEP clean and maintain sewer. NYCT install check valve. Complete. ' DEP inspected and cleaned 15” dia. j None. River Avenue Location where subway drainage is directly connected to an DEP ; I I ; sew^________ j___________ ____________ _ i--------- N^ NYCT - noth St. (Lenox Sewer Back Flow. jDEP clean and maintain sewer. NYCT install check valve. Complete. DEP inspected and cleaned 3- i None. I Ave.) Location where subway । *42”dia. drainage is directly i I 1 connected to an DEP I sewer. I N NYCT - 72nd Street (B'way- DEP clean and maintain sewer. j NYCT install check valve. NYCT has requested that DEP j NYCDEP Response 3-30" combined sewer 1 f clean 3 obstructed 30* sewers along jdeaning and TV inspection occurred between Juiyjl 7th Ave. line) Amsterdam between 71st and 72nd 10-17,2008. The sewer is in good condition and Street crossing B'way under the was cleaned. Seweirs downstream of B'way-7th Ave. subway structure. this location need _ cleaning. N NYCT Revenue facility (46 Flooding. DEP to install catch basin. Complete. DEP installed catch basin. None. Metropolitan Avenue, Queens) N NYCT - Grand Avenue bus Flooding. Attributed to NYCT construction project. NYCT to complete construction/repair N/A None. depot, Maspeth, Queens temporary vulnerabilities. Complete.

N URR - Hillside Support Damaged drainage and DEP repair existing drainage pipes that DEP (DDC) increasing sewer capacity. DEP has inspected and cleaned NYCDEP Response: OEP re-Inspected this area Facility-183rd & Liberty clogged storm drains @ were broken during construction, and catch basins at this location. With during the week of August 11 to determine if 183rd Street & Uberty clean clogged storm drains. DOT assistance, we continue to basins previously Impacted by debris and from on-going Street coordinate the road construction at concrete rmnaln so. Basins were found to ba reconstruction. Street 183rd and Liberty with DDC. New generally bi accepteble condition. These are Inlet flooding affected utilities (water mains & drainage) bastes; the inlet chamber will be tespected and dispatching of support are scheduled to be installed this cleaned to ensure appropriate function. LIRR site staff. summer. In addition, 183rd St driveway has a zipper drain; OEP does not (between Jamaica Ave & the south recommend zipper drains as the dog easily and I end of the URR Yard Tracks) is further, this drain was observed to be dogged I scheduled to be totally during CEP’s baste inspections. URR site is large I and Impervious, should consider retention. This reconstructed. DDC has agreed to i stage work so that the URR is tetersectlon Is a local low spot; water will naturally ' minimally impacted. All work is collect here. OOC project is not installing storm ' sewers. During scofrirq of the job ttoy were tart schedi^ tobecompleted by _ 12/gg^EP to veri^Tfomarid? A found to be necessary. '{'Capacity and scope of sewer \ improvements required in this \ ( region. Can DEP provide periodic 1' monitoring of temporary facilities? 11 Status? / !

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