PSA - Bendrix Drive Improvements (Lathrop to Voorde) - DLZ Indiana Proj. No. 00016028

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Version 6-8-2017 20 C.Location Control Route Survey Plat (LCRSP) The CONSULTANT shall prepare a Location Control Route Survey Plat for recordation in accordance with Title 865 I.A.C. 1-12 (Rule 12). This plat will provide the necessary alignment, section corner and other title information needed for the preparation of Right of Way Parcel Plats and Descriptions. The plat will display alignment monumentation and reference ties to those monuments as well as coordinate values for random control and alignment points. The CONSULTANT will record this plat in the St. Joseph County Recorder’s Office. D.Subsurface Utility Engineering The CONSULTANT will engage a SUBCONSULTANT to perform subsurface utility engineering, if concurred and directed to do so by the LPA. 1.An allowance of $65,700.00 has been included for the CONSULTANT and/or SUBCONSULTANT to perform Subsurface Utility Engineering, as directed and described below. 2.All aspects of the Subsurface Utility Engineering (SUE) performed under this project will be in accordance with ASCE Standard 38-02 “Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data” and industry standards as of the notice to proceed date. 3.SUE will be performed to a Quality Level “A” and “B”, as described in item 4 below. 4.SUE work for this project will be divided into two separate areas of work, which is defined as follows: a.Quality Level B: Utility Designating up to 1,500 feet of underground utilities to locate the horizontal location of utilities at test hole locations. i.Test hole locations for utility designating will be defined more specifically once design development is underway and preliminary plans are established. ii.Utility designating shall include locating underground utilities within the limits established and shall include but not be limited to: telephone, gas, water, electric, and fiber optic cables, if encountered. iii.Surface geophysical methods will be utilized to interpret the possible presence of underground utilities and then employ electromagnetic equipment to detect the selected utilities. The sub-consultant will attempt to field locate and mark-out buried, “toneable” utilities. Toneable is defined as any utility capable of carrying an electromagnetic signal. Using the aforementioned technology, the sub-consultant will provide paint markings or flags to show the approximate horizontal position of the desired utilities. iv.Ground Penetrating Radar (GPR) will be used in an attempt to locate any non-metallic (nontoneable) utilities that may be present. GPR is a wave-based form of geophysical investigation in which an electromagnetic wave, launched by a transmitting antenna element, is propagated downward into the ground. A portion of the wave energy is reflected off of subsurface features differing in electrical properties from the surrounding material. The reflected radar energy is detected back at the surface by a receiving antenna and converted to electrical signals, which correspond to minor changes in the voltage. The signals are sent to the control display unit, amplified and a real time two-dimensional depth profile is constructed. The depth profile is analyzed in the field and features such as subsurface utilities, pipes, voids, or other obstructions can be interpreted and potentially located in the field. It should be noted that overall quality and vertical penetration of GPR data is entirely dependent on the composition of subsurface materials. Highly electrically conductive materials typically serve to attenuate the electromagnetic radar energy and not allow for significant depth penetration. Therefore, while due care will be exercised in the acquisition and interpretation of GPR measurements, no warranties or guarantees can be offered with respect to existing subsurface conditions.