/s/ Stephen T. Veatch. Via efiling. August 5, 2015

Transcription

1 Via efiling August 5, 2015 Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C Re: OEP/DG2E/Gas Branch 4 Rover Pipeline LLC FERC Docket No. CP Rover Pipeline Project Supplemental Response to an Informal FERC Data Request dated July 20, 2015 Dear Ms. Bose: Rover Pipeline LLC ( Rover ) hereby submits for filing with the Federal Energy Regulatory Commission ( Commission or FERC ) its Supplemental Response to an Informal FERC Data Request dated July 20, 2015, in the above mentioned docket for the Rover Pipeline Project. Due to an inadvertent administrative oversight in the earlier August 5, 2015 filing with the Commission; Rover respectfully requests that this filing supersede the previously mentioned submittal. Resource Report 9: Updated response to Question 3 / Addendum Noise Report for the updated HDD locations This filing is being submitted electronically to the Commission s efiling website pursuant to the Commission s Order No. 703, Filing via the Internet Guidelines issued on November 15, 2007 in FERC Docket No. RM Rover is providing a copy of this filing directly to the FERC Project Manager. Any questions concerning this filing may be addressed to the undersigned at (713) Respectfully submitted, ROVER PIPELINE LLC /s/ Stephen T. Veatch cc: Attachment: Mr. Kevin Bowman FERC OEP Ms. Jennifer Ward, Cardno Entrix Stephen T. Veatch Senior Director, Certificates 1300 Main Street Houston, Texas (713)

2 CERTIFICATE OF SERVICE In accordance with the requirements of Section of the Commission s Rules of Practice and Procedures, I hereby certify that I have this day caused a copy of the foregoing document to be served upon each person designated on the official service list compiled by the Commission s Secretary in this proceeding. /s/ Stephen T. Veatch Stephen T. Veatch, Senior Director, Certificates Regulatory Affairs Department Rover Pipeline LLC (713)

3 OATH STATEMENT In accordance with the requirements of Section of the Commission's Rules of Practice and Procedures, STEPHEN T. VEATCH, being duly sworn on his oath, states that he is a Senior Director, Certificates in the Regulatory Affairs Department for Rover Pipeline LLC, and states that he has read the foregoing Supplemental Response to an Informal FERC Data Request dated July 20, 2015 in Docket No. CPl , and that after reasonable diligence and review, the information and statements provided in the responses are true, complete, and accurate to the best of his knowledge, information, and belief, and that he has full power and authority to sign this filing. /s/ Stephen T. Veatch Stephen T. Veatch, Senior Director, Certificates Subscribed and sworn to before me this 5th day of August, Name: Title: /s/ Suzanne Samano Notary Public in the State of Texas My Commission Expires: April 10, 2018

4 Resource Report 9 Rover Pipeline LLC FERC Docket No. CP Rover Pipeline Project Supplemental Response to an Informal FERC Data Request dated July 20, 2015 Filed August 5, 2015 Question 3: submitted? When will the addendum noise report for the updated HDD locations be Response: The addendum noise report for the updated HDD locations will be submitted at the beginning of August Supplemental Response (August 5, 2015) See attached updated HDD Noise Report. Page 1 of 3

5 August 5, 2015 To: Ms. Buffy Thomason Rover Pipeline LLC 1300 Main Street Houston, Texas From: Ronald R. Spillman, P.E. Principal SLR International Corporation Houston, Texas Re: ADDENDUM Updated Acoustical Evaluation HDD Crossings Rover Pipeline Project SLR File No TECHNICAL MEMORANDUM SLR Report HDD, Rev. 0 At the request of Rover Pipeline LLC, SLR International Corporation (SLR) has conducted baseline sound level measurements and noise impact evaluations for Horizontal Directional Drilling (HDD) crossings associated with the Rover Pipeline Project. This Technical Memorandum is an addendum to previously submitted information. The purpose is to address the updated locations proposed for HDD crossings associated with the project. 1 BASELINE ENVIRONMENTAL SOUND LEVELS As previously reported, baseline ambient sound level measurements have been collected near the HDD crossing sites. Since the survey period, there have been additions, deletions, and modifications to the list of proposed crossings. The majority of the crossing modifications involve relatively minor changes in the entry or exit sites, or the swapping of entry and exit, and no new baseline noise measurement surveys were needed to characterize those areas. For the new HDD crossing at IH-94 in Michigan, the baseline ambient sound level has been estimated. The crossing is at a major highway, and traffic noise is likely to be the dominant background ambient noise source at the nearest NSAs. Therefore, the ambient sound levels were estimated for the new IH-94 crossing using basic methods developed by the US Department of Housing and Urban Development (HUD). SLR International Corporation 6001 Savoy Drive, Suite 215, Houston, TX T: (713) F: (713) Offices throughout USA, UK, Ireland, Canada, Australia, Namibia, and South Africa

6 August 5, 2015 SLR Report HDD, Rev. 0 Rover Pipeline LLC ADDENDUM Updated Acoustical Evaluation HDD Crossings Rover Pipeline Project Page Baseline Sound Level Estimates for New HDD Crossings The baseline ambient sound level estimate for the new IH-94 HDD crossing was made using the traffic noise calculation method presented in HUD s Noise Assessment Guidebook. The input data and assumptions were as follows: Traffic: 56,000 annualized average daily traffic, combined eastbound & westbound. Traffic mix: Rural interstate with 3% medium trucks and 17% heavy trucks. Distance from IH-94 centerline: Entry NSA is 620 feet, Exit NSA is 1240 feet. Other: 70 mph posted speed limit, no stop signs, no large gradients, 15% nighttime traffic. For the IH-94 crossing, the HUD calculation procedure returns 70.4 and 65.8 dba L dn for the NSAs closest to entry and exit locations, respectively. The new Portage River HDD crossing is approximately one-half mile west of the original (but now eliminated) Tiplady Road / Portage River crossing. By proximity and the similar nature of the area, the measured baseline data for that original site is appropriate for use for the new Portage River HDD. 2 ACOUSTICAL ANALYSIS Since the Resource Report filing in February 2015, there have been slight entry/exit location modifications or entry/exit swaps for 17 of the 36 original HDD crossings. Seven crossings have been eliminated, and two new crossings have been added. There are now 31 proposed HDD crossings. To reduce potential confusion, this addendum includes the acoustical data for ALL of the HDD crossings, including the original (unchanged) crossings, the modified crossings, and the new crossings. The data is provided in the tables attached to this Technical Memorandum, using the same table format as that used in Appendix 9E for the Resource Report 9 section. Similarly, the figures (maps) for ALL crossings are included. The updated tables and figures attached to this document can therefore replace the original items in Appendix 9E. As noted in Section Predicted Temporary Sound Levels in Resource Report 9, the predicted HDD equipment sound level contribution for each NSA has been calculated in the evaluation. The calculated level was combined with the existing ambient sound level near each NSA to determine the overall sound level Ldn (ambient plus predicted HDD) at each NSA during the temporary HDD activity. The difference between this overall sound level and the current sound level is the calculated increase due to the temporary HDD activity. For most of the crossings, there are two NSAs considered, with one closest to the Entry, and one closest to the Exit. For a few crossings, a single residence represents the closest NSA for both the Entry and Exit, as can be seen in the associated figures. For all of the crossings, the noise contribution from both the Entry and the Exit is included for each NSA calculation. HDD crossing data, including locations, distances, baseline ambient data, and the calculation results for the HDD crossings are presented in tables which include:

7 August 5, 2015 SLR Report HDD, Rev. 0 Rover Pipeline LLC ADDENDUM Updated Acoustical Evaluation HDD Crossings Rover Pipeline Project Page 3 Table Summary of Proposed HDD Crossings Table Summary of NSAs and Baseline Sound Level Measurement Data Table Calculated HDD Sound Level Contributions at Nearest NSAs The calculation methods are illustrated for the entries and exits of each HDD crossing. This is given in a format like this: Table 9.2-HDD-[crossing designation] [N for entry or X for exit]. 3 NOISE MITIGATION The noise mitigation comments provided in the Resource Report Section Noise Mitigation for HDD Sites remains applicable for the updated list of HDD crossings. For HDD sites where the predicted sound levels at the NSAs are greater than 55 dba Ldn, noise mitigation for the HDD equipment as described in the Report or compensation/relocation considerations are recommended. 4 ACOUSTICAL SUMMARY The list of proposed HDD crossings has been updated, and the corresponding modifications have been made for the acoustical evaluations. This Technical Memorandum contains updated Tables , , and and Appendix 9E for the noise data section, as well as the corresponding figures showing the entry/exit locations and NSAs. All HDD crossings, whether new or modified, are included in the tables and figures. Sincerely, SLR International Corporation Ronald R. Spillman, P.E. Principal Attachments Tables , , and ; Appendix 9E Figures (showing locations for HDD crossing entries, exits, & NSAs; and distances)

8 Table Summary of Proposed HDD Crossings HDD Crossing Crossing Description County State Figure NSAs within 1/2 Mile? Entry / Exit Milepost Latitude North Longitude West ML-P4-01 Highway 151 Harrison OH ML-P4-02 Indian Fork Tuscarawas OH ML-P4-03 Sandy Creek Tuscarawas OH ML-P4-04 Interstate 77 Stark OH ML-P4-05 ML-P4-06 Tuscarawas River Stream at Hwy 241 Stark Wayne OH OH ML-P4-07 Prairie Lane Wayne OH ML-P4-08 Railroad Wayne OH ML-P4-09 S Columbus Rd Wayne OH ML-P4-10 US Hwy 30 Wayne OH ML-P4-12 Interstate 71 Ashland OH ML-P4-13 US Hwy 42 Ashland OH ML-P4-14 ML-P4-15 Black Fork Mohican River County Road 12 Richland Ashland OH ML-P4-16 Honey Creek Seneca OH ML-P4-17 Sandusky River 9.2-HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P HDD- ML-P4-14 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Seneca OH ML-P4-18 Interstate 75 Wood OH Seneca 9.2-HDD- Entry OH Yes Ashland ML-P4-15 Exit HDD- ML-P HDD- ML-P HDD- ML-P4-18 Yes Yes Yes Entry Exit Entry Exit Entry Exit

9 HDD Crossing Crossing Description County State Figure NSAs within 1/2 Mile? Entry / Exit Milepost Latitude North Longitude West ML-P4-18A ML-P4-20 State Hwy 109 Maumee River Henry Henry OH OH MK-P4-22 State Road 52 Washtenaw MI MK-P4-27 Lake at Vines Road Livingston MK-P4-28 Jewell Road Livingston MI SW-P4-38 SW-P4-39 SW-P4-40 Private Road and Middle Island Creek Middle Island Creek Ohio River - Sherwood Tyler MI WV 9.2-HDD- ML-P4-18A 9.2-HDD- ML-P HDD- MK-P HDD- MK-P HDD- MK-P HDD- SW-P4-38 Yes Yes Yes Yes Yes Yes Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Wetzel Monroe WV OH CL-P4-41 Captina Creek Belmont OH CL-P4-42 Interstate 70 Belmont OH BG-P4-45 MJ-P4-46 Ohio River - Burgettstown Ohio River - Majorsville Jefferson Hancock Marshall Belmont OH WV WV OH IH-94 IH-94 Washtenaw MI Portage River Portage River Tyler 9.2-HDD- Entry WV Yes Livingston SW-P4-39 Exit HDD- SW-P HDD- CL-P HDD- CL-P HDD- BG-P HDD- MJ-P HDD-I- 94 Yes Yes Yes Yes Yes Yes Entry Exit Entry Exit Entry Exit Entry Exit Entry Exit Entry 74.73EQ Exit 74.32EQ Livingston MI 9.2-HDD- Entry 84.50EQ Portage Yes Monroe OH River Exit 84.85EQ

10 Table Summary of NSAs and Baseline Sound Level Measurement Data HDD Crossing ML-P4-01 ML-P4-02 ML-P4-03 ML-P4-04 ML-P4-05 ML-P4-06 ML-P4-07 ML-P4-08 ML-P4-09 ML-P4-10 ML-P4-12 ML-P4-13 ML-P4-14 ML-P4-15 ML-P4-16 NSA Information NSA Code Dist. feet Dir. Meas. Code Date Sound Level Measurement Information Existing Meas. Sound Duration Level, Level, Time Day Day- Night Secs. Ld, Ldn, Comment, Audible Noise Sources ML-P4-01N 1450 SW 01X 2/4/ : Traffic ML-P4-01X 1000 NE 01X 2/4/ : Traffic ML-P4-02N 5200 SE 02X 2/4/ : Traffic ML-P4-02X 6630 NW 02N 2/4/ : Geese & traffic ML-P4-03N 1700 S 03N 2/5/ : Traffic ML-P4-03X 1330 NW 03X 2/5/ : Traffic, distant dogs barking ML-P4-04N 950 WSW 04N 2/5/ : Traffic ML-P4-04X 580 S 04X 2/5/ : Traffic ML-P4-05N 780 SE 05X 2/5/ : Traffic ML-P4-05X 830 SE 05N 2/5/ : Traffic ML-P4-06N 400 SW 06N 2/5/ : ML-P4-06X 800 N 06X 2/5/ : Traffic, paused for snow plows Background noise from nearby business ML-P4-07N 1780 S 07N 2/5/ : Light traffic ML-P4-07X 1400 E 07X 2/5/ : Light traffic ML-P4-08N 400 SW 08N 2/5/ : ML-P4-08X 1900 SSE 08X 2/5/ : Distant dog bark, occasionaly Very quiet (except when ice fell) ML-P4-09N 390 N 09X 2/5/ : Frequent traffic ML-P4-09X 520 SE 09N 2/5/ : Frequent traffic ML-P4-10N 1210 S 10N 2/5/ : highway noise, birds ML-P4-10X 900 N 10X 2/5/ : Distant highway traffic ML-P4-12N 480 S 12N 2/3/ : Frequent traffic ML-P4-12X 280 NE 12X 2/3/ : Frequent traffic ML-P4-13N 450 SW 13X 2/3/ : Highway noise ML-P4-13X 600 NW 13N 2/3/ : Highway noise ML-P4-14N 1600 WSW 14N 2/3/ : Wind gust, no traffic ML-P4-14X 1890 SE 14X 2/3/ : Wind gust, no traffic ML-P4-15N 830 SW 15N 2/4/ : Light wind. birds ML-P4-15X 1020 SSW 15X 2/4/ : Light wind. birds ML-P4-16N 1000 E 16X 2/4/ : Wind, no traffic ML-P4-16X 1840 SW 16N 2/4/ : Wind, no traffic

11 HDD Crossing ML-P4-17 ML-P4-18 ML-P4-20 MK-P4-22 MK-P4-27 MK-P4-28 SW-P4-38 SW-P4-39 SW-P4-40 CL-P4-41 CL-P4-42 BG-P4-45 MJ-P4-46 IH-94 Portage River NSA Information NSA Code Dist. feet Dir. Meas. Code Date Sound Level Measurement Information Existing Meas. Sound Duration Level, Level, Time Day Day- Night Secs. Ld, Ldn, ML-P4-17N 580 NW 17N 2/4/ : ML-P4-17X 2380 NW 17N 2/4/ : ML-P4-18N 900 NW 18N 2/4/ : ML-P4-18X 1100 NNE 18X 2/4/ : Comment, Audible Noise Sources Windy & snowfall, highway traffic in distance Windy & snowfall, highway traffic in distance Snowfall. traffic in distance Snowfall. traffic in distance ML-P4-20N 550 SW 20N 2/4/ : Strong snow ML-P4-20X 650 SW 20X 2/4/ : Strong snow MK-P4-22N 1250 NNE 22X 2/5/ : Calm MK-P4-22X 490 NW 22X 2/5/ : Calm MK-P4-27N 280 NE 27N 2/5/ : Very quiet MK-P4-27X 600 E 27X 2/5/ : Very quiet MK-P4-28N 930 SW 28N 2/5/ : Very quiet MK-P4-28X 600 SE 28X 2/5/ : Very quiet SW-P4-38N 1020 SSW 38N 2/3/ : Very quiet, no traffic SW-P4-38X 180 S 38X 2/3/ : Some birds, light traffic SW-P4-39N 2310 N 39N 2/3/ : Some birds SW-P4-39X 1260 E 39N 2/3/ : Some birds SW-P4-40N 430 NE 40N 2/3/ : Some birds, distant hammering SW-P4-40X 220 NE 40X 2/3/ : Tractor trailor traffic CL-P4-41N 1380 NE 41N 2/3/ : Traffic CL-P4-41X 1200 SE 41X 2/3/ : Traffic CL-P4-42N 1180 WSW 42N 2/4/ : Traffic, birds CL-P4-42X 1400 SE 42X 2/4/ : Traffic BG-P4-45N 600 NE 45N 2/4/ : Heavy equipment use, traffic BG-P4-45X 7480 NE 45X 2/4/ : Birds, slight breeze MJ-P4-46N 570 E 46N 2/4/2015 9: Heavy traffic MJ-P4-46X 900 SSW 46X 2/4/2015 9: Birds, small stream IH-94N 1350 SSE Background sound levels for this crossing were estimated using the US Department of IH-94X 640 E Housing and Urban Development method for traffic noise. PortageN 390 SW PRN 2/5/ : Calm, no traffic PortageX 540 SW PRX 2/5/ : Calm, no traffic

12 Table Calculated HDD Sound Level Contributions at Nearest NSAs NSA Information 24-hour Operations HDD Crossing Crossing Description NSA Code Dist. Dir. Existing Ambient Sound Level Calculated HDD Activity Contrib. Combined HDD and Ambient Predicted Temporary Increase Due to HDD Activities feet Ldn, Ldn, Ldn, ML-P4-01 ML-P4-02 ML-P4-03 ML-P4-04 ML-P4-05 ML-P4-06 ML-P4-07 ML-P4-08 ML-P4-09 ML-P4-10 ML-P4-12 ML-P4-13 ML-P4-14 ML-P4-15 ML-P4-16 ML-P4-17 Highway 151, Entry NSA ML-P4-01N 1450 SW Highway 151, Exit NSA ML-P4-01X 1000 NE Indian Fork, Entry NSA ML-P4-02N 5200 SE Indian Fork, Exit NSA ML-P4-02X 6630 NW Sandy Creek, Entry NSA ML-P4-03N 1700 S Sandy Creek, Exit NSA ML-P4-03X 1330 NW Interstate 77, Entry NSA ML-P4-04N 950 WSW Interstate 77, Exit NSA ML-P4-04X 580 S Tuscarawas River, Entry NSA ML-P4-05N 780 SE Tuscarawas River, Exit NSA ML-P4-05X 830 SE Stream at Hwy 241, Entry NSA ML-P4-06N 400 SW Stream at Hwy 241, Exit NSA ML-P4-06X 800 N Prairie Lane, Entry NSA ML-P4-07N 1780 S Prairie Lane, Exit NSA ML-P4-07X 1400 E Railroad, Entry NSA ML-P4-08N 400 SW Railroad, Exit NSA ML-P4-08X 1900 SSE S Columbus Rd, Entry NSA ML-P4-09N 390 N S Columbus Rd, Exit NSA ML-P4-09X 520 SE US Hwy 30, Entry NSA ML-P4-10N 1210 S US Hwy 30, Exit NSA ML-P4-10X 900 N Interstate 71, Entry NSA ML-P4-12N 480 S Interstate 71, Exit NSA ML-P4-12X 280 NE US Hwy 42, Entry NSA ML-P4-13N 450 SW US Hwy 42, Exit NSA ML-P4-13X 600 NW Black Fork Mohican River, Entry NSA ML-P4-14N 1600 WSW Black Fork Mohican River, Exit NSA ML-P4-14X 1890 SE County Road 12, Entry NSA ML-P4-15N 830 SW County Road 12, Exit NSA ML-P4-15X 1020 SSW Honey Creek, Entry NSA ML-P4-16N 1000 E Honey Creek, Exit NSA ML-P4-16X 1840 SW Sandusky River, Entry NSA ML-P4-17N 580 NW Sandusky River, Exit NSA ML-P4-17X 2380 NW

13 NSA Information 24-hour Operations HDD Crossing Crossing Description NSA Code Dist. Dir. Existing Ambient Sound Level Calculated HDD Activity Contrib. Combined HDD and Ambient Predicted Temporary Increase Due to HDD Activities feet Ldn, Ldn, Ldn, ML-P4-18 ML-P4-18A ML-P4-20 MK-P4-22 MK-P4-27 MK-P4-28 SW-P4-38 SW-P4-39 SW-P4-40 CL-P4-41 CL-P4-42 BG-P4-45 MJ-P4-46 IH-94 Portage River Interstate 75, Entry NSA ML-P4-18N 900 NW Interstate 75, Exit NSA ML-P4-18X 1100 NNE State Hwy 109, Entry NSA ML-P4-18AN 1930 SE State Hwy 109, Exit NSA ML-P4-18AX 400 NE Maumee River, Entry NSA ML-P4-20N 550 SW Maumee River, Exit NSA ML-P4-20X 650 SW State Road 52, Entry NSA MK-P4-22N 1250 NNE State Road 52, Exit NSA MK-P4-22X 490 NW Lake at Vines Road, Entry NSA MK-P4-27N 280 NE Lake at Vines Road, Exit NSA MK-P4-27X 600 E Jewell Road, Entry NSA MK-P4-28N 930 SW Jewell Road, Exit NSA MK-P4-28X 600 SE Private Road and Middle Island Creek, Entry NSA SW-P4-38N 1020 SSW Private Road and Middle Island Creek, Exit NSA SW-P4-38X 180 S Middle Island Creek, Entry NSA SW-P4-39N 2310 N Middle Island Creek, Exit NSA SW-P4-39X 1260 E Ohio River - Sherwood, Entry NSA SW-P4-40N 430 NE Ohio River - Sherwood, Exit NSA SW-P4-40X 220 NE Captina Creek, Entry NSA CL-P4-41N 1380 NE Captina Creek, Exit NSA CL-P4-41X 1200 SE Interstate 70, Entry NSA CL-P4-42N 1180 WSW Interstate 70, Exit NSA CL-P4-42X 1400 SE Ohio River - Burgettstown, Entry NSA BG-P4-45N 600 NE Ohio River - Burgettstown, Exit NSA BG-P4-45X 7480 NE Ohio River - Majorsville, Entry NSA MJ-P4-46N 570 E Ohio River - Majorsville, Exit NSA MJ-P4-46X 900 SSW IH-94, Entry NSA IH-94N 1350 SSE IH-94, Exit NSA IH-94X 640 E Portage River, Entry NSA PortageN 390 SW Portage River, Exit NSA PortageX 540 SW

14 Table 9.2-HDD-ML-P4-01N: Sound Levels for HDD Crossing at Highway 151, Entry NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

15 Table 9.2-HDD-ML-P4-01X: Sound Levels for HDD Crossing at Highway 151, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

16 Table 9.2-HDD-ML-P4-02N: Sound Levels for HDD Crossing at Indian Fork, Entry NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

17 Table 9.2-HDD-ML-P4-02X: Sound Levels for HDD Crossing at Indian Fork, Exit NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

18 Table 9.2-HDD-ML-P4-03N: Sound Levels for HDD Crossing at Sandy Creek, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

19 Table 9.2-HDD-ML-P4-03X: Sound Levels for HDD Crossing at Sandy Creek, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

20 Table 9.2-HDD-ML-P4-04N: Sound Levels for HDD Crossing at Interstate 77, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

21 Table 9.2-HDD-ML-P4-04X: Sound Levels for HDD Crossing at Interstate 77, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

22 Table 9.2-HDD-ML-P4-05N: Sound Levels for HDD Crossing at Tuscarawas River, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

23 Table 9.2-HDD-ML-P4-05X: Sound Levels for HDD Crossing at Tuscarawas River, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

24 Table 9.2-HDD-ML-P4-06N: Sound Levels for HDD Crossing at Stream at Hwy 241, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

25 Table 9.2-HDD-ML-P4-06X: Sound Levels for HDD Crossing at Stream at Hwy 241, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

26 Table 9.2-HDD-ML-P4-07N: Sound Levels for HDD Crossing at Prairie Lane, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

27 Table 9.2-HDD-ML-P4-07X: Sound Levels for HDD Crossing at Prairie Lane, Exit NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

28 Table 9.2-HDD-ML-P4-08N: Sound Levels for HDD Crossing at Railroad, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

29 Table 9.2-HDD-ML-P4-08X: Sound Levels for HDD Crossing at Railroad, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

30 Table 9.2-HDD-ML-P4-09N: Sound Levels for HDD Crossing at S Columbus Rd, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

31 Table 9.2-HDD-ML-P4-09X: Sound Levels for HDD Crossing at S Columbus Rd, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

32 Table 9.2-HDD-ML-P4-10N: Sound Levels for HDD Crossing at US Hwy 30, Entry NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

33 Table 9.2-HDD-ML-P4-10X: Sound Levels for HDD Crossing at US Hwy 30, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

34 Table 9.2-HDD-ML-P4-12N: Sound Levels for HDD Crossing at Interstate 71, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

35 Table 9.2-HDD-ML-P4-12X: Sound Levels for HDD Crossing at Interstate 71, Exit NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

36 Table 9.2-HDD-ML-P4-13N: Sound Levels for HDD Crossing at US Hwy 42, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

37 Table 9.2-HDD-ML-P4-13X: Sound Levels for HDD Crossing at US Hwy 42, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

38 Table 9.2-HDD-ML-P4-14N: Sound Levels for HDD Crossing at Black Fork Mohican River, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

39 Table 9.2-HDD-ML-P4-14X: Sound Levels for HDD Crossing at Black Fork Mohican River, Exit NSA Entry Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities

40 Table 9.2-HDD-ML-P4-15N: Sound Levels for HDD Crossing at County Road 12, Entry NSA Entry Coefficient Geometrical Divergence Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Entry Equipment Contribution at NSA Exit Coefficient Geometrical Divergence Additional Attenuation by Foliage and/or Land Contour Atmospheric (70% R.H., 60 deg F) Ground Effect Ldn Calculated Exit Equipment Contribution at NSA Combined Entry and Exit Contribution at Receiver Existing Ambient Sound Level Combined HDD Contribution and Ambient Sound Level Predicted Temporary Increase During HDD Activities