Texas Eastern Transmission, LP and Algonquin Gas Transmission, LLC - Supplemental Cultural Resources Information, Docket No. CP11-56.

Memorandum TO Mr. Gregory R. Dubell FROM James W. Feuerborn Jr. P.E. PUBLIC ARCHAEOLOGY COMPANY DATE October 04, 2012 LABORATORY, INC. RE 319 Coles Street Construction PROJECT NO N12132.00 Monitoring Summary 319 COLES STREET JERSEY PROJECT CC Luis Valderruten, Gary Castleberry, CITY NJ, CONSTRUCION NAME Paul Mitchell MONITORING SUMMARY As requested by Public Archeology Laboratory (PAL), Thornton Tomasetti (TT) prepared this memorandum summarizing the vibration monitoring data at the 319 Coles Street Jersey City NJ from September 17, 2012 through September 21, 2012. In addition, this memorandum reports on the crack gauge data and optical monitoring data recordings September 17, 2012 through September 21, 2012. Summary tables of the vibrations recorded at 319 Coles are attached with this report. The installed vibration monitor is located in the basement on the concrete slab-on- grade along the closest foundation wall to the construction site. TT will record data at all vibration levels but only report data (via email alerts) when the peak particle velocity (PPV) is 0.3 in/sec or greater (See Table 1). In the event that vibration limits are exceeded specific procedures are to take place as stated in Table 1 from the Construction Protection Plan shown below. Figure #2: Approximate Location of Seismograph (Langan Ambient Vibrations Report) 51 Madison Avenue | New York NY 10010-1603 | T 917.661.7800 | F 917.661.7801 | www.ThorntonTomasetti.com Memorandum Re: 319 Coles Street NJ Construction Monitoring Summary Page 2 Table 1 Recommended Vibration Limits at 319 Coles Street New Jersey NJ Peak Vibration Level Contractor 1 Reporting Engineer Action (inches/second) Action Engineer (daily Routine weekly vibration monitor inspection 0.1 0.3 None email at 7 AM and 4 Bi-weekly optical PM) monitoring Routine weekly Engineer/Contractor inspection 0.3 0.4 will receive trigger None Bi-Weekly optical email monitoring Alternate Engineer/Contractor Daily inspection with construction 0.4 0.49 will receive trigger optical monitoring methods to be email 2 used Engineer/Contractor/ 3 Cease vibration 0.50 Owner will receive Priority survey 4 producing work trigger email 1. Vibration level recorded at Building 2. Warning level indicating that maximum level of allowable vibration by ordinances is within proximity of being breached. The shall contractor stop the vibration producing work and an alternate construction method shall be used until the cause of the excessive vibration is determined, remediated and engineer has been able to perform a post event survey of the building. Contractor may resume activity without altering methods after visual and optical survey of the building have been completed and engineer has given approval to proceed. 3. Survey within 24 hours of vibration limits being exceeded (to the extent feasible) with optical monitoring. 4. Maximum level of allowable vibration by ordinances. Vibration ...