DEP Biweekly Reports Folder 0049, 2000-2001

NYC 9/11 Public Portal Document

delayed when the cable, Construction of the basin was to have commenced during June, but was Airport as well as serving tens which serves the Presidcnt' a private hangar at the Westchester County the pre-construction survey. DEP will of thousands of upstate customers, was identified during cable to construct the supply Bell Atlantic with detailed plans and specifications for crossing the Avoidance basin, and is hopeful that construction will commence this summer. The Filtration Determination requires the Department to begin construction of the basin by the spring of 2002. One an extended detention basin, day after construction of Kensico Best Management Practice (BMP) #2, contractor to halt construction began on Pepsico property, DEP issued a stop work order directing the contractually-required erosion of the basin until such time as he has achieved compliance with the which the contractor and sediment control plan. Despite two pre-construction conferences, during construction sequence) and and DEP discussed in detail the necessary erosion controls (including the temporary their importance, the contractor began excavation of the basin without the controls, or the the piping of Malcolm Brook, in place. Piping of the brook is the most critical component of disturbed soils subject to erosion. sequencing plan as it eliminates contact between the brook and Staff will continue to conduct regular inspections.

Hiliview Reservoir damaged by construction As noted above, the chlorine feed line to the Catskill Aqueduct was Chlorination was activities at Kensico Reservoir on Wednesday morning, August 9, 2000. monitored at interrupted from Kensico for just over three (3) hours. Incoming residuals were added to maintain the Hillview's Uptake 1 Chamber, where additional sodium hypochlorite was were maintained to normal residual arriving at the Downtake Chambers, normal residuals distribution.

Jerome Reservoir starting on Saturday Concerns generated by puddles in the empty South Basin were addressed standing water to the drain August 5, 2000, when a crew was sent into the Basin to pump and push chlorine on August 9, 2000. line. This was followed by spraying any remaining water with liquid by the recent On August 10, another crew was sent to pump and push the new puddles created South Basin. The backhoe rainfall. On August 11, a crane was brought in to lower a bacichoe into the to the drain line. This process is equipped with a rubber edged plow that was used to push the water station was shut down at was successfully completed on August 12, 2000. Mosholu pump Con Edison's approximately 3 p.m. on Saturday, August 12, 2000 because of a power failure on the flow from upstate 1X22 feeder. Since it was not known how long the Station would be down, and Jerome Pump Station. The could not be shut down, the Station crew was sent over to activate the changes. Jerome Distribution Engineer and his machinist were called in to make the necessary field was able to restore power to the Pump Station was on line by 7:30 p.m. Saturday night. Con Edison was shut down at 9:30 a.m. Mosholu Pump Station by 8 a.m. Sunday morning. Jerome Pump Station problems in the affected areas. and Mosholu was back on line by 10:30 a.m. There were no pressure

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NYC-WTC 000137906