sheet annual inspection by pe...this inspection checklist has been developed to meet the ... sheet 2...

SHEET 1 OF 5

708 Heartland Trail, Suite 3000 (53717) Madison, WI (608) 826‐3600 FAX: (608) 826‐3941

PROJECT/PROPOSAL NAME PREPARED CHECKED PROJECT/PROPOSAL NO.

Dairyland Power Cooperative; Phase IV

Alma Off‐site Disposal Facility

By: Date: By: Date:243332.0003

J. Hotstream 11/15/2017 T. Martin 12/13/2017

\\NTAPB‐MADISON\MSN‐VOL6\‐\WPMSN\PJT2\243332\0003\Z2433320003‐002_2017 INSPECTION.DOCX 12/22/17

INSPECTION REPORT

Landfill Annual Inspection Report

Purpose:

This inspection checklist has been developed to meet the requirements for inspections by a

qualified professional engineer for a coal combustion residual (CCR) landfill. This checklist

exceeds the requirements for 40 Code of Federal Regulations 257.84(b). This inspection of the

Alma Off‐Site Disposal Facility Phase IV Landfill was performed by TRC Environmental

Corporation on behalf of Dairyland Power Cooperative (DPC).

The goal of the inspection is to ensure that the design, construction, operation, and maintenance

is consistent with recognized good engineering practices. In addition, the inspection looked for

conditions of structural weakness or conditions that may affect the safe operation of the CCR

unit.

The following were performed for the inspection of the CCR unit.

Review of Available Information:

The following documents were reviewed in preparation of the site visit.

Health and Safety Plan

Fugitive Dust Control Plan (12/19/2016)

Groundwater Monitoring Program (10/2017)

Dust Control Report (12/5/2016)

Post‐Closure Plan (10/2016)

Closure Plan (10/2016)

Run‐on and Run‐off Control System Plan (10/2016)

Annual Landfill Inspection Report (12/16/2016)

Weekly inspections performed by qualified personnel (11/2/2016 through 11/10/2017)

Comments on the Operating Record: Electronic system, well organized, accessible from the

office at the landfill

Summary of the Site Conditions (based on document review):

DPC operates a CCR landfill (Alma Off‐Site Disposal Facility, Phase IV Landfill) located in the

NE 1/4 of the NE 1/4 of Section 19 and portions of Sections 18 and 20, T21N, R12W, Town of

Belvidere, Buffalo County, Wisconsin. The location of the Phase IV landfill is in a valley

SHEET 2 OF 5








INSPECTION REPORT

including 3 phases of non‐contiguous closed landfills. This inspection addresses only the Phase

IV landfill, because the Phase 1, II, and III landfills were closed prior to the promulgation of the

federal CCR rule (40 Code of Federal Regulations 257.50 through 107).

The Phase IV landfill is permitted through the state of Wisconsin. To date the liner system of

Cells 1, 2A, 2B, 3A, and 3B have been constructed with final cover installed over a portion of

Cells 1, 2A, and 2B. Cell 3B of the Phase IV landfill was constructed during May through

August 2015. The landfill construction includes a composite liner system, composite cover

system, leachate collection system, leachate storage tank, and storm water controls (diversion

berms, sedimentation basin, ditching, and downslope flumes).

Changes to the unit since the previous report:

Since the inspection in 2016, there has been continued placement of CCR into Cell 3A and 3B.

Approximate volume of CCR in the unit at the time of the inspection: Approximately 1,044,100

cubic yards based on the November 14, 2017, topographic survey

Visual Inspection:

A site visit and visual inspection were performed by Jonathan Hotstream, P.E., P.G. (TRC

Environmental Corporation) on November 15, 2017

Time arrived on site: 10:14 AM ________________________

Time departed from site: 12:10 PM _____________________

DPC Personnel Present: Leif Tolokken _________________

Weather Conditions: Cool, overcast, lower to upper 40s °F

Summary of Items Visually Inspected: Electronic operating record, weekly inspection forms,

sedimentation basin, perimeter berm/access road, perimeter run‐on controls including

stormwater channels, outlets, culverts; final cover areas including diversion berms and

vegetation; working area conditions; Cell 3A and 3B/Future Cell 4 delineation berm; and surface

conditions at the leachate collection tank controls. _______________________________________

___________________________________________________________________________________

Site Operations during Inspection: No site operations were occurring during inspection due to

a safety training. _____________________________________________________________________

___________________________________________________________________________________

SHEET 3 OF 5








INSPECTION REPORT

Appearance of structural conditions:

Final Cover Conditions (Cell 1 and 2A areas):

Vegetation Condition: Well established, dense vegetation

Evidence of Erosion: Yes: None: X

Evidence of slumping, sloughing, or slope distress: Yes: None: X

Evidence of seepage: Yes: None: X

Comments: Good establishment of native grasses emerging on newer final cover, older phases

of final cover have a mature dense stand of state approved tall grass prairie vegetation. ______

Perimeter Berm:

Vegetation Condition: Well established, dense vegetation _________________________________

Evidence of Erosion: Yes: None: X

Cracking along crest: Access road along crest Yes: None: X

Evidence of slumping, sloughing, or slope distress: Yes: None: X

Evidence of seepage: Yes: None: X

Cell Delineation Berms: Exposed geomembrane covering berm ____________________________

Comments: Separation with waste filling for adequate run‐off control. No observed

irregularities in the slope or geomembrane cover. ________________________________________

Stormwater Controls:

Run‐on Controls: Diversion berms provide adequate drainage and slope away from open areas.

Perimeter Drainage Ditches: Cleared of sediment and obstructive vegetation, well‐

maintained rip‐rap, grouted rip‐rap clear of obstructions, and good conveyance present.

_____________________________________________________________________________

Comments: Well‐maintained. No concerns at this time. ____________________________

_____________________________________________________________________________

_____________________________________________________________________________

Run‐off Controls: Final Cover

Diversion Berms: Good condition. Well‐maintained with dense vegetative cover, no

erosion observed, and clear of obstructions. _______________________________________

SHEET 4 OF 5








INSPECTION REPORT

Downslope Flumes: Inlets and outlets were cleared of vegetation and no erosion

observed at rock protection. ____________________________________________________

Ditching: No erosion observed; clear of obstructions, sloped for positive drainage, and

no standing water observed. ___________________________________________________

Comments: Stormwater controls are well‐maintained at the site. Good drainage and

conveyance to the sedimentation basin. No obstructions observed. __________________

_____________________________________________________________________________

_____________________________________________________________________________

Sedimentation Basin No. 1:

Outlets Operational: Yes, repaired and upgraded from previous inspection. (Added

stone at outlet.) _______________________________________________________________

Culverts Operational: Yes, box culverts cleared and grout added for protection. ______

Comments: Well‐maintained and vegetated. The basin has been cleared, stone added at

outlet, and side slopes are in good condition. _____________________________________

_____________________________________________________________________________

Operating Conditions:

Changes in Operation since the previous annual inspection: Continued filling of cells 3A and

3B _________________________________________________________________________________

Access Road Conditions: Well‐maintained, clear of tracked material, no rutting or cracking

observed. ___________________________________________________________________________

Landfill Operations:

Temporary Storm Water Controls: Adequate slopes to contain water within landfill and convey

water to leachate collection system. ____________________________________________________

___________________________________________________________________________________

Working Face Conditions: Placed material has been graded and rolled to minimize infiltration

into CCR. ___________________________________________________________________________

___________________________________________________________________________________

Access roads: Good access conditions into and out of site. ________________________________

Fugitive Dust Observed: Yes: No: X

SHEET 5 OF 5








INSPECTION REPORT

Comments: No site operations were occurring at time of inspection. Moist conditions

observed around site. Water truck is available as needed. DPC installed larger motors

for pin mixer and lowered operating temperature of silo, which resulted in less moisture

evaporating from ash and improved dust control. _________________________________

Leachate Management: No standing leachate observed. Exposed areas of leachate collection

system and drainage layer at perimeter and base of landfill to manage contact with water

effectively. __________________________________________________________________________

___________________________________________________________________________________

Ash Tracked Out on Access Road? Yes: None: X

Leachate Collection System: Pipes buried, but not visible; system recently jetted and video

inspected in October according to weekly reports; system working properly. ________________

Pipe Cleanouts: Clean & accessible, bollards protecting ____________________________

Tank: Controls are accessible and appeared operational. __________________________

Loadout Area: Accessible and operational ________________________________________

Comments: Appears to be a well‐maintained system used daily for operation of the site.

Conditions that may potentially impact safety: None observed. __________________________

___________________________________________________________________________________

___________________________________________________________________________________

Observed Deficiencies and Proposed Corrective Actions: Items identified in the previous

inspection have been addressed. No new deficiencies observed. ____________________________

___________________________________________________________________________________

Future Action:

– Continue monitoring and maintenance of stormwater controls. __________________________

– Continued implementation of dust control practices. ___________________________________

___________________________________________________________________________________

__________________________________________________________________________________

\\NTAPB‐MADISON\MSN‐VOL6\‐\WPMSN\PJT2\243332\0003\Z2433320003‐001.DOCX 1

Photographic Log

Client Name: Site Location: Project No.:

Dairyland Power Cooperative Phase IV Off‐Site Disposal 243332.0003

Photo No. Date

1 11/15/2017

Description:

Asphalt paved site entrance

road looking south. No material

tracked off site.

Photo No. Date

2 11/15/2017

Description:

Sedimentation Basin 1 outlet.

Sediment removed and

vegetation established in the

base. Gravel placed

surrounding base of outlet pipe.

Standing water present from

recent precipitation.


Photographic Log



Photo No. Date

3 11/15/2017

Description:

Vegetation established on

Area 1 and Area 2 final cover.

Photo No. Date

4 11/15/2017

Description:

CCR filling area showing Cell 3

delineation berm. Sufficient

space and berm height provided

to control runoff within the

landfill.


Photographic Log



Photo No. Date

11/15/2017 5

Description

Perimeter drainage ditch with

rock check dam.

Photo No. Date

6 11/15/2017

Description:

Grouted riprap perimeter ditch

conveying stormwater off site.

sheet annual inspection by pe...this inspection checklist has been developed to meet the ... sheet 2...

Documents