Archer Avenue lines: Difference between revisions

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In April 1979, the Jamaica Water Supply Company, which supplied water to 118,000 residents of western [[Nassau County, New York|Nassau County]] and southeastern Queens, sent a report to the [[New York State Department of Environmental Conservation]]. The report stated that the NYCTA would excessively pump too much water out of the ground during the station's construction, which could lower the water table to the level at which salt water would infiltrate and destroy its shallowest aquifer, which produced a quarter of its water supply. These charges were denied by the NYCTA, which said that it would recharge water it pumped from the ground, like in past projects, and that it would replace water flushed into the city sewer system. 2 billion gallons of water worth $1.4 million had been given to the company since 1976. The company had agreed to reduce its pumping at wells near the subway by the amount received by the NYCTA under previous agreement, but did not do so due to an increase in consumer demand. Subsequently, a new agreement was negotiated for work at the Sutphin Boulevard stop, which required more water pumping because more time was needed for the project–a sewer underneath Sutphin Boulevard had to be reinstalled.<ref name=":19">{{Cite news|title=Clash Simmers at Subway Site|last=Treen|first=Joseph M.|date=August 27, 1979|work=Newsday}}</ref>
[[File:A Weekend at Work November 23 - 25 (11050999966).jpg|thumb|A portion of the line constructed using the tunneling shield method near Jamaica–Van Wyck station.]]
On October 17, 1979, the groundbreaking for Section 7, a {{convert|1,300|ft|0}} cut-and-cover section of the Archer Avenue line, took place. This section included the Hillside Avenue Connector, which connected the line with the [[IND Queens Boulevard Line]], and included the [[Jamaica–Van Wyck station]]. This section extended north from 89th Avenue to a point {{Convert|250|feet|meters|abbr=}} past Hillside Avenue, and was expected to be completed in 43 months.<ref>{{Cite news|url=https://www.newspapers.com/clip/35645914/daily_news/|title=Break ground soon for new subway link|last=Rabin|first=Bernard|date=September 20, 1979|work=New York Daily News}}</ref> This section was constructed by Schiavone Construction Company for $37,728,140.<ref>{{Cite news|url=https://www.newspapers.com/clip/35645943/daily_news/|title=TA to take bids on subway line|date=July 4, 1979|work=New York Daily News}}</ref><ref>{{Cite news|url=https://www.newspapers.com/clip/35645992/daily_news/|title=Officials break ground for a subway station|date=October 18, 1979|work=New York Daily News}}</ref> Most of the project was constructed via [[Tunnel#cutCut-and-cover|cut-and-cover]] methods, with portions of the lines excavated with [[tunneling shield]] methods.<ref name="MTA-ArcherAvDEIS-19732"/> The line was constructed through the sandy soil of south Jamaica, and therefore, [[slurry wall]]s were used to construct the line, a relatively new construction method in New York City. This method replaced blasting and shorting. Pumps and waterproofing were used to keep ground water from getting into the tunnel. According to the engineer in charge of the project, the water could reach a depth of {{Convert|40|feet|meters|abbr=}} in a heavy rain without them.<ref name=":3" />
 
On December 20, 1979, the New York City Board of Estimate passed a measure approving the selection and acquisition of easements in private property at the Van Wyck Expressway and 89th Avenue for an entrance to the Jamaica–Van Wyck station.<ref>{{Cite news|title=Jamaica to Get Subway Station|date=December 21, 1979|work=Newsday|pages=7, 25}}</ref>