Enbridge Site Plan Review Application Summary of Issues for Comstock Township Planning Commission

Transcription

1 Enbridge Site Plan Review Application Summary of Issues for Comstock Township Planning Commission July 25, 2013 Comstock Township Planning Commission Meeting

2 Background EPA Order - March 14, 2013 What does the EPA Order require? Enbridge to remove Line 6B oil and oil-containing sediment along various parts of the Kalamazoo River, including: Upstream of the Ceresco Dam Mill Ponds area Morrow Lake, Morrow Lake Delta and adjacent areas (Morrow Lake and the surrounding area is the location at issue related to the work that would take place at the CCP site) Sediment traps at two designated locations on the river The dredging and removal of sediment from the areas indicated above must be completed by December 31,

3 Background Permits from County and State Enbridge has applied for and has submitted the necessary documentation for 3 types of permits: 1. MDEQ Dredge permit to allow Enbridge to dredge sediment from Morrow Lake and surrounding area. Enbridge is waiting to receive the approved dredge permit from MDEQ. 2. NPDES permit related to water that will be treated and then discharged to the Kalamazoo River has been granted by the MDEQ. A copy of the permit and related materials has been posted on the Comstock Township website. 3. Soil Erosion and Sedimentation Control (SESC) permit applied for and granted through Kalamazoo County for the CCP site. 3

4 Understanding the Dredging Processes HDP Pipe 4. Filtering Water Settling Tanks Pump HDP Pipe Pump 2. Piping Sediment/Water Drainage to Sump 3. Separating Water /Sediment Geotextile Fabric Tubes HDP Pipe Pump 5. Transportation and Disposal 1. Dredging the Sediment Containment: - Earthen Berm - Impervious Liner Solidified Soil 5. Solidify Sediment Pug Mill To An Approved Landfill On Designated Haul Routes 4

5 Understanding the Dredging Processes Dredging the sediments Piping sediments and water to the CCP site Separating water and sediment Filtering the water Solidifying the sediment Transportation and disposal 5

6 Dredging Process Dredge Equipment Dual-Axis Precision Machined Cable Guides Front and Rear Heavy-Duty Skid Channels Full-Width Flow Through Cutter Head Hi-Chrome Centrifugal Dredge Pump to Resist Wear Replaceable Cutter Teeth Hi-Torque Cutter Drive Motor 6

7 Dredging Process Piping of sediment and water High Density Polyethylene (HDP) pipe Tested and inspected Used to Transport Incoming sediment and water mixture Treated water back into system 7

8 Dredging Process Sediment Dewatering System - Geotube Filtration The Geotextile Fabric Tube System (Geotube) will collect the dredged sediment/water mixture and allow the water to seep out of the tubes and travel to a sump where the water is processed through a filtration system. Complete containment (earthen berm) is constructed around the geotube area Then lined with an impervious liner The area slopes towards the sump basin where the water is collected Solids remain in the geotextile tubes and settle to the bottom of the tube 8

9 Dredging Process Water Treatment System The water treatment system filters the water that is collected from the geotextile tubes. The treatment process includes: High Flow Mobile Carbon Treatment Trailer Portable system to filter and remove impurities from liquid streams Settling tanks and/or 100 micron filter bags Additives to accelerate sediments to settle out Sand filtration - six bag filter housings Two activated carbon pressure filtration vessels Processed water is tested to ensure it meets permit standards. 9

10 Dredging Process Soil Solidification Process - Pug mill mixing station After dewatering, the geotubes are cut open and the moist soil is removed and transferred to the solidification area. Portland cement is added through the pug mill to condition the soil to meet stiffness and water content criteria of the landfills prior to transport. Pug mill thoroughly mixes soil and Portland cement. Portland cement is stored in silos and introduced to the mixture under negative pressure. Mixed soil is placed in material storage area and allowed to cure for a short period of time. Soil is then taken to an approved landfill. (the benefits of this soil to the landfill operation have been described in a July 19 th and attachment to the PC) 10

11 Enbridge s analysis of the CCP site At least five (5) other potential sites in Comstock Township were considered and those sites were not feasible sites for a number of reasons, including: Historical contamination Excessive public impact: requiring additional river closures Too small for scope of work Ecological impact - heavily wooded High levels of public use Location near well heads 11

12 Enbridge s analysis of alternative sites The CCP site was selected based on a number of factors, including: Appropriate size related to scope of work Proximity to Morrow Lake Accessibility Minimize public impact (using the CCP site will allow 75 of the lake, and additional river sections to remain open for public use) 12

13 Enbridge s consideration of issues raised by the Township and other parties Enbridge has carefully reviewed and considered issues raised by Mr. Wicklund in his July 15, 2013 memo to the PC and concerns raised by others and has addressed those issues/concerns as follows: 1. The scale and dimension issues have been addressed in the supplemented site plan drawing/sketch provided by Enbridge. 2. The landscaping, screening (use of berms, fencing and natural buffers) have been addressed in the supplemented site plan drawing/sketch. 3. Based on Enbridge s use of the property/site, there will be no wastewater treatment system and there is no need for such a system. The process to treat and control water on the site is contained in the information provided regarding the dewatering system which has been approved by the MDEQ/NPDES. 13

14 INSERT TOM AIR MONITORING 13

15 Van Bruggen St 208' Sparks St Rosemont Dr Plaza Pl ééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé éééééééééééééééééééééééééééééééééééééééééééééééééééééééééé Existing Woodland- Hydrant Van Bruggen St. ROW 66 ft wide Hydrant Krum Rd. ROW 66 ft wide Hydrant Existing 20 ft Structure within 100 ft of Site Boundary Water Treatment 369' Trash Recepticles Bagfield Processing 417' Potential Third Bagfield Stockpile Bagfield 350 ft Landscape Berm (see detail, sheet 4) Existing Woodland- Existing Woodland- Temporary 6 ft Construction Privacy Fencing 141' 15 ft Gravel Road 232' Sump 367' Sump 15 ft Gravel Road 28' 12' 21' Temporary 6 ft Construction Privacy Fencing 38' Existing 30 ft Structure within 100 ft of Site Boundary 1290' 400' Treated Water Discharge Line 15 ft Gravel Road Trailers Top Soil Stockpile Employee Gravel Parking 27 Spaces Trash Receptacles MDOT Standard Signage 656' Temporary 6 ft Construction Privacy Fencing Silos Dredge Water Line Intake 660' MDOT Standard Signage Krum Ave éééééééééééééééééééééééééééééééééééééééééé 980' ééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé Drawn: PM 07/23/2013 Approved: BP 07/23/2013 Project #: ± Map Location PROPOSED DREDGE PAD Morrow Lake BAS Path: Z:\Work\GIS\Submerged_Oil\2013_Dredge\MXD\130723_Morrow_Dredge_Pad24x36_sheet1.mxd Temporary Construction Fence Set Back Line - 25' éééé Existing Woodlot - Parcels Easements Landscape Berm Drainage Utility EXISTING UNDERGROUND ELECTRIC EXISTING UNDERGROUND GAS EXISTING UNDERGROUND SANITARY EXISTING UNDERGROUND STORM SEWER EXISTING UNDERGROUND WATER PIPE Feet 1 inch = 80 feet Absolute Scale 1:960 Relative Scale 1 in = 0.02 miles AND STAGING AREA SITE PLAN MORROW LAKE SHEET 1 ENBRIDGE LINE 6B MP 608 MARSHALL, MI PIPELINE RELEASE ENBRIDGE ENERGY, LIMITED PARTNERSHIP

16 ' Van Bruggen St Sparks St Rosemont Dr Plaza Pl ééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé éééééééééééééééééééééééééééééééééééééééééééééééééééééééééé Drawn: PM 07/23/2013 Approved: BP 07/23/2013 Project #: Existing 20 ft Structure within 100 ft of Site Boundary Existing Woodland- ± Map Location PROPOSED DREDGE PAD Easements Landscape Berm Drainage Utility EXISTING UNDERGROUND ELECTRIC EXISTING UNDERGROUND GAS EXISTING UNDERGROUND SANITARY EXISTING UNDERGROUND STORM SEWER Hydrant EXISTING UNDERGROUND WATER PIPE Van Bruggen St. ROW 66 ft wide Hydrant Krum Rd. ROW 66 ft wide Hydrant Water Treatment 369' Trash Recepticles Bagfield Processing 417' Potential Third Bagfield Stockpile Bagfield 350 ft Landscape Berm (see detail, sheet 4) Existing Woodland- Existing Woodland- Temporary 6 ft Construction Privacy Fencing 141' 15 ft Gravel Road 232' Sump 367' Sump 15 ft Gravel Road 28' 12' 21' Temporary 6 ft Construction Privacy Fencing 38' Existing 30 ft Structure within 100 ft of Site Boundary 1290' 400' Treated Water Discharge Line 15 ft Gravel Road Trailers Top Soil Stockpile Employee Gravel Parking 27 Spaces Trash Receptacles MDOT Standard Signage 656' Temporary 6 ft Construction Privacy Fencing Silos Dredge Water Line Intake 660' MDOT Standard Signage éééééééééééééééééééééééééééééééééééééééééé 980' ééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé Krum Ave AND STAGING AREA SITE PLAN MORROW LAKE - PRE-EXISTING CONTOURS SHEET 2 ENBRIDGE LINE 6B MP 608 MARSHALL, MI PIPELINE RELEASE ENBRIDGE ENERGY, LIMITED PARTNERSHIP Morrow Lake BAS Path: Z:\Work\GIS\Submerged_Oil\2013_Dredge\MXD\130723_Morrow_Dredge_Pad24x36_sheet2.mxd Temporary Construction Fence Set Back Line - 25' éééé Existing Woodlot - Parcels Feet 1 inch = 80 feet Absolute Scale 1:960 Relative Scale 1 in = 0.02 miles

17 .21.0 TOPSOIL STOCKPILE N. Entrance Pad 1 Potential Third Bagfield 934,170 Square Feet Acres Stormwater To Be Collected & Discharged To Water Treatment ,000 gpm WWTP 150 S. Entrance 417 Processing Lining Station B' Stockpile E. Exit.5.5 Landscape Berm (See Detail) *note* Polymer Pump at beginning of bag field A A' Typical Geotextile Tube Bagfield Cross Section B' Pad 2 Proposed Effluent Discharge Treated Water Discharge Line Proposed Dredge Water Line Intake Pad 3 Map Location Legend Property Line N PROPOSED DREDGE PAD GRADING PLAN Drawn: JM 07/24/2013 Approved: BP 07/24/2013 Project #: Cross Section Line Gravel Road Topsoil Stockpile Landscape Berm Feet 1 Inch = 80 Feet Absolute Scale N/A Relative Scale 1" = 80' SHEET 3 ENBRIDGE LINE 6B MP 608 MARSHALL, MI PIPELINE RELEASE ENBRIDGE ENERGY, LIMITED PARTNERSHIP C:\USERS\JWMELCHIORI\DESKTOP\PROPOSED DREDGE PAD & STAGING AREA SITE PLAN\GRADING PLAN & ADDITIONAL INFRASTRUCTURE DETAILS.DWG

18 Van Bruggen St 208' Sparks St Rosemont Dr 100 ft Activity Set Back 100 ft Activity Set Back Plaza Pl 100 ft Activity Set Back Hydrant Existing Woodland- éééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé ééééééééééééééééééééééééééééééééééééééééééééééé Van Bruggen St. ROW 66 ft wide Hydrant Temporary 6 ft Construction Privacy Fencing Hydrant Krum Rd. ROW 66 ft wide Hydrant Existing 20 ft Structure within 100 ft of Site Boundary Water Treatment 369' Trash Recepticles Bagfield Processing 417' Potential Third Bagfield Stockpile Bagfield 350 ft Landscape Berm (see detail, sheet 4) Existing Woodland- Existing Woodland- 141' 15 ft Gravel Road 232' Sump 367' Sump 15 ft Gravel Road 28' 12' 21' Temporary 6 ft Construction Privacy Fencing 38' Existing 30 ft Structure within 100 ft of Site Boundary 400' Treated Water Discharge Line 15 ft Gravel Road Trailers MDOT Standard Signage 100 ft Activity Set Back Top Soil Stockpile Employee Gravel Parking 27 Spaces Trash Receptacles 100 ft Activity Set Back Temporary 6 ft Construction Privacy Fencing Silos Dredge Water Line Intake MDOT Standard Signage 660' 1290' 656' Krum Ave éééééééééééééééééééééééééééééééééé 980' 160' 1250' 100 ft Activity Set Back ééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééééé Drawn: PM 07/23/2013 Approved: BP 07/23/2013 Project #: Z:\Work\GIS\Submerged_Oil\2013_Dredge\MXD\130723_Morrow_Dredge_Pad24x36_sheet4.mxd ± Map Location PROPOSED DREDGE PAD Temporary Construction Fence Set Back Line - 25' éééé Existing Woodlot ft Activity Set Back Line Easements Parcels Drainage Utility Landscape Berm EXISTING UNDERGROUND ELECTRIC EXISTING UNDERGROUND GAS EXISTING UNDERGROUND SANITARY EXISTING UNDERGROUND STORM SEWER EXISTING UNDERGROUND WATER PIPE Feet 1 inch = 100 feet Absolute Scale 1:1,200 Relative Scale 1 in = 0.02 miles AND STAGING AREA SITE PLAN MORROW LAKE SHEET 4 ENBRIDGE LINE 6B MP 608 MARSHALL, MI PIPELINE RELEASE ENBRIDGE ENERGY, LIMITED PARTNERSHIP

19 DECORATIVE TREE (TYPE & SPACING TO BE DETERMINED) TEMPORARY 6' TALL CONSTRUCTION FENCE TEMPORARY 6' TALL CONSTRUCTION FENCE 1 2 (TYP) ORIGINAL SUBGRADE - PROPERLY PREPARED PRIOR TO FILL PLACEMENT 22' Proposed East Berm Detail Scale: 1" = 2' PERMANENT VEGETATION 4' Right-Of-Way/Property Line 25' Min. Proposed Temporary Perimeter Construction Fence Typical WTP Cross Section Typical Processing Cross Section PERMANENT VEGETATION 4" TOPSOIL SUBGRADE Typical Road Cross Section Subgrade Restoration Detail Scale: 1" = 1' Map Location Legend Property Line N PROPOSED DREDGE PAD ADDITIONAL INFRASTRUCTURE DETAILS Drawn: JM 07/24/2013 Approved: BP 07/24/2013 Project #: Cross Section Line Gravel Road Topsoil Stockpile Landscape Berm Feet 1 Inch = 80 Feet Absolute Scale N/A Relative Scale 1" = 80' SHEET 5 ENBRIDGE LINE 6B MP 608 MARSHALL, MI PIPELINE RELEASE ENBRIDGE ENERGY, LIMITED PARTNERSHIP C:\USERS\JWMELCHIORI\DESKTOP\PROPOSED DREDGE PAD & STAGING AREA SITE PLAN\GRADING PLAN & ADDITIONAL INFRASTRUCTURE DETAILS.DWG

20 Closing Comments or Questions We respectfully reserve the opportunity to answer questions