requirements contracts for engineering design and related services ...

g) Present the proposed tree planting and tree removal plan to the Department of Transportation (DOT) for
approval;
h) Upon receipt of concurrence from the Commissioner and in conjunction with the Forester/Arborist/Tree
Consultant, meet with representative(s) of the Department of Parks and Recreation (DPR) to present the proposed
tree planting/tree removal program, obtain their concurrence and/or concerns, and modify the tree planting/tree
removal proposals until DPR's approval is obtained.
i) Incorporate the approved tree planting/tree removal plan into the Composite Contract Documents.
4.18 SEEPAGE BASIN AND/OR HIGHWAY DRAIN DESIGN
A. Under this task the Consultant shall provide for the preparation of Seepage Basin and/or Highway Drain Design(s)
to be performed in conjunction with the Project. This work shall include the collection of sewer data, the development of
boring locations, the study of soils analyses and soils classification results, the determination of storm water flow rates, the
preparation of Seepage Basin and/or Highway Drain Design Letter Report, and the preparation of Seepage Basin and/or
Highway Drain Design, including manholes, basin connections and other appurtenances necessary for the proper
functioning of the seepage basin and/or highway drain system(s).
B. The scope of work for the Seepage Basin and/or Highway Drain Design includes performance of the following
services:
a) The Consultant shall research and check available records of the Department of Environmental Protection
(DEP) Bureau of Sewers to obtain pertinent information needed in the preparation of Seepage Basin and/or
Highway Drain Design. The records to be researched and checked shall include, but not be limited to, the following:
1) As-built sewer plans;
2) Borough sewer maintenance records;
3) Drainage Plans
4) Proposed sewer construction and schedules;
5) Previous seepage basin construction;
b) The Consultant shall research and check available records of other City agencies and public utilities, including:
1) The plotted utility survey as furnished for the Final Design of the Project.
2) The records of various utilities regarding water mains, gas mains, electrical ducts, steam mains,
and telephone and fire alarm systems.
c) The Consultant shall research available boring logs and soils analysis and classification results.
d) The Consultant shall coordinate the development of Seepage Basin and/or Highway Drain Design proposals
with the Bureau of Sewers, and shall identify those locations requiring seepage basins and/or highway drains. The
following are some of the factors that should be considered:
1) Need for drainage facilities based upon present drainage patterns and flows (present grades
maintained);
2) Need for drainage facilities based upon future drainage patterns and flows (construction to legal
grade, or to intermediate grades as determined in this Final Design Program);
3) Lack of existing storm sewer or combined sewer facilities at the site(s);
4) Possible future sewer construction at the site(s);
5) Highway drain(s) discharge provisions;
6) Where feasible, highway drains shall be proposed in preference to seepage basins.
e) The Consultant shall visit the site and shall conduct a visual inspection to confirm and/or correlate the
information obtained from his research of available records with actual field conditions. Discrepancies shall be
NYC Department of Design and Construction
Infrastructure, October 2012
GR-60