Post-construction stormwater management facilities shall be designed and constructed in accordance with Chapter 388, Stormwater Management, of the Township's Code. The intent of these specifications is to supplement Chapter 388, Stormwater Management; however, if there is a conflict between the requirements of Chapter 388, Stormwater Management, and these specifications, the requirements of the Chapter 388, Stormwater Management, shall prevail.
A. 
Concrete pipe shall be reinforced concrete, rubber gasketed, and shall conform to AASHTO M170, M198 and M207.
B. 
Smooth bore high-density polyethylene pipe shall be product N-12 as manufactured by ADS, or approved equal.
C. 
Inlet boxes shall conform to PADOT Standard Drawings and Publication 408, latest edition.
(1) 
PADOT Type C inlet box tops shall be precast with Product No. 00700160 Trout Logo Plate as manufactured by East Jordan Iron Works, Inc., or equal, to assist the Township in satisfying its NPDES Phase II stormwater permit requirements. Plate shall contain the text "dump no waste" and "drains to waterways," in addition to the profile of a trout.
(2) 
PADOT Type M inlet box tops shall be precast with Product No. 00700360 Trout Logo Plate as manufactured by East Jordan Iron Works, Inc., or equal, to assist the Township in satisfying its NPDES Phase II stormwater permit requirements. Plate shall contain the text "dump no waste" and "drains to waterways," in addition to the profile of a trout in a submerged environment.
D. 
Inlet frames and grates shall conform to PADOT Standard Drawings and Publication 408, latest edition. Bicycle-safe grates shall be installed where directed by the Engineer.
E. 
Stormwater manholes shall conform to PADOT Standard Drawings and Publication 408, latest edition.
(1) 
Stormwater manhole frame shall be Product No. 00104510 as manufactured by East Jordan Iron Works, Inc., or equal, to assist the Township in satisfying its NPDES Phase II stormwater permit requirements.
(2) 
Stormwater manhole cover shall be Product No. 00103918 as manufactured by East Jordan Iron Works, Inc., or equal, to assist the Township in satisfying its NPDES Phase II stormwater permit requirements. Cover shall contain the text "dump no waste" and "drains to waterways," in addition to the profile of a trout.
F. 
Headwalls/endwalls. Reinforced concrete, minimum 4,000 psi. Compressive strength in accordance with PADOT Publication 408, latest edition.
G. 
All miscellaneous stormwater management appurtenances, such as energy flow dissipaters, shall be in accordance with PADOT Publication 408, latest edition, and the PADOT Standard Drawings.
[Amended 12-15-2014 by Ord. No. 424-14]
H. 
Trench restoration for storm sewers shall be performed in accordance with the Standard Details.
A. 
When there is a change in pipe size in an inlet or manhole, the elevation of the top of pipes shall be the same or the smaller pipe higher. A minimum drop of two inches shall be provided between the inlet pipe invert elevation and the outlet pipe invert elevation.
B. 
At street intersections, inlets shall be placed in the tangent and not in the curved portion of the curbing.
C. 
Inlets or manholes shall be placed at all changes in vertical or horizontal direction of pipe.
D. 
Bridges.
(1) 
A bridge shall be considered an enclosed water-carrying structure of one or more cells having a combined span of eight feet or greater.
(2) 
All bridge designs shall be in accordance with PADOT Design Manual, Part IV (latest revision), and shall be submitted to the Township Engineer for approval of materials, structural design, compliance to AASHTO HS-25 loading, flow design capacity and calculated life cycle of the proposed structure. All bridges shall have approach guide rail in accordance with PADOT.