8.e) 2014 Scandia Mine AOP ApplicationJanuary 2014
TILLER
CO RPO RAT 10N'
2014 APPLICATION FOR THE
ANNUAL OPERATORS PERMIT
Scandia, MN
Consulting Civil Engineers
Sunde Engineering, PLLC.
10830 Nesbitt Avenue South • Bloomington, Minnesota 55437-3100
Phone: (952) 881-3344 • Fax: (952) 881-1913 • E -Mail: info&sundecivil.com
APPLICATION FOR ANNUAL OPERATORS PERMIT
TILLER CORPORATION
SAND AND GRAVEL MINING OPERATION
CITY OF SCANDIA
WASHINGTON COUNTY, MINNESOTA
January 2014
I. INTRODUCTION
The following Annual Operators Permit (AOP) application is submitted on behalf of Tiller
Corporation (Tiller) in compliance with the City of Scandia's Ordinance No. 103 and
Chapter 4 of the Development Code: Mining and Related Activities Regulations, Section 6,
adopted by the City of Scandia on August 28, 2007.
Tiller operates a gravel mining and processing operation including hot -mix asphalt (HMA)
production within the City of Scandia. The site has been actively mined since at least
1966. Prior to the incorporation of Scandia in 2006, New Scandia Township and
Washington County were the permitting authorities. The City of Scandia adopted a
resolution on May 20, 2008 issuing a Conditional Use Permit (CUP) for the site.
II. ANNUAL REPORT
A. Operating Conditions
The site operates in accordance with operating conditions regulated by Section 7 of
the Scandia Ordinance 103.
Setbacks: No mining, stockpiling or land disturbance activities, with the exception
of screening activities, are proposed to take place within the setback areas.
Minimum setback areas are maintained as follows:
a) 50 feet from an adjoining property line
b) 200 feet from an occupied structure existing on May 20, 2008.
c) 100 feet from any contiguous property subdivided into residential lots of 5
acres or less
d) 100 feet from any road right-of-way.
2. Fencing: The majority of the site is fenced with 3 strand wire fencing except
where prohibited due to topography, heavy vegetation and wetlands. There are
locking metal gates at both entrances to the site.
3. Hours of operation: The site is operated from 7:00 a.m. to 7:00 p.m. Monday
through Friday except holidays. Extended hours may be required periodically for
situations such as emergencies, accelerated work schedules or weather delays.
In accordance with procedures set forth in Ordinance No. 103, extended hours
Tiller Corporation Page 1
2013 Annual Operators Permit Application
January 24, 2013
were requested and approved in 2013. As part of the request for extended
hours, Tiller asked to be notified if the City received any complaints regarding the
extended hours of operations. Tiller did not receive any notice of complaints
from the City as a result of the extended hours.
Extended hours were approved for the operation of the asphalt plant, excluding
trucking operations on Sunday, October 13, 2013 from 3:00 p.m. to 7:00 p.m. in
order to supply HMA to the County Road 7 Project.
4. Screening: Screening berms, wooded buffer areas and agricultural fields
separate the mining activity from surrounding properties. A large number of trees
have been planted in the past to screen site activities. Processing and
stockpiling operations are conducted in recessed portions of the site to minimize
visibility. Screening berm construction or modifications are not anticipated during
2014.
5. Dust control: Major haul roads are hard surfaced and some roads are covered
with asphalt millings as dust control measures. A water truck is used to water
unpaved portions of the site to control dust. During periods of increased trucking
activity, calcium chloride or other approved dust suppressants is applied to
provide additional dust control. These practices will continue throughout the
2014 mining season.
6. Noise: All activities are conducted so as to be in accordance with all Federal,
State and City noise standards.
7. Depth of excavation: Depth of excavation will not exceed fifty feet below the
water table.
8. Site clearance: Site clearing activities did not occur during 2013. Clearing activity
is not anticipated in 2014.
9. Appearance/condition: All buildings, plants and equipment at the site are
maintained in a neat condition. Weeds and other unsightly or noxious vegetation
are controlled as necessary to preserve the appearance of the reclaimed areas.
10. Sanitary Facilities: The scale area is served by an individual sewage treatment
system. Portable sanitary facilities are provided in the operating areas as
required by the Mine Safety and Health Administration.
11. Waste Disposal: Waste generated from the operation is disposed of in
accordance with Federal, State and City requirements.
12. Water Quality Monitoring: A plan for groundwater monitoring has been developed
and approved in conjunction with the monitoring wells placed in 2008 and the
CUP permitting process. Groundwater monitoring was conducted in 2013 and
the results were submitted to the City. Water level data is summarized on Table
1 with an associated graph and water quality data is summarized on Table 2.
Tiller Corporation Page 2
2013 Annual Operators Permit Application
January 24, 2013
13. Fuel and Chemical Storage: All fuel and chemicals stored on site are stored in
accordance with Federal and State standards. On-site fuel storage consists of a
1,000 -gallon above -ground storage tank which is located within a concrete
secondary containment area and a five hundred gallon above -ground double
walled tank located next to the standby electrical generator. When production or
reclamation crews are present, an additional 1,000 -gallon double walled tank is
brought to the site and used to fuel the respective equipment.
All asphalt cement storage tanks are above -ground. These tanks consist of two
40,000 gallon tanks and one 20,000 gallon tank. There is also a 20,000 gallon
above -ground used oil storage tank. The used oil is utilized as an alternative fuel
supply for the HMA plant. All tanks are within the secondary containment area
and are registered with MPCA's Storage Tank Program. MPCA Site ID 51999 is
for the HMA plant and MPCA Site ID 55016 is for the sand and gravel operation.
Small amounts of chemicals utilized by the QM Lab are regulated by Washington
County under United States Environmental Protection Agency (EPA) rules. EPA
ID Number MND 981 953 417 has been issued for the site which is classified as
a Very Small Quantity Generator.
14. Contingency Response Plan: The site operates under a SPCC Plan which is on
file with the City of Scandia.
15. Added Provisions: The operator will comply with other such reasonable
requirements that the City may find necessary to adopt for the protection of
health, safety and welfare and/or prevention of nuisance.
16. Processing: The site operates permanent processing equipment as defined by
Ordinance No. 103 in accordance with all Federal, State and City air and water
quality and noise standards. Processing equipment is screened from view from
other properties and adjacent roads. Portable crushing equipment is placed on
the floor of the facility and setbacks per Ordinance No. 103 are maintained
between the processing equipment and the property lines.
17. Recycling: Recycling activity at the facility meets all applicable standards
contained in Section 7.1 (1) of Ordinance No, 103. Approximately 36,000 tons of
Recycled Asphalt Products (RAP) and recycled concrete were processed in
2013. Processed RAP is used in asphalt production and recycled concrete is
sold in various aggregate products.
18. Trucking Operations: The site has access to County Road 15 (Manning Trail N.)
and County Road 91 (Lofton Avenue N.). These are paved 9 ton roads.
19. Asphalt Plants: The site operates a permanent HMA plant and the plant was in
operation at the time the City adopted its mining ordinance. Therefore the plant
may expand in the future subject to the setbacks set forth in Section 7.1(1) of
Ordinance No. 103. The plant operates in accordance with all Federal, State, and
City air, water and noise quality standards.
Tiller Corporation Page 3
2013 Annual Operators Permit Application
January 24, 2013
B. Compliance with Conditions of the CUP
1. Updated Copy of Application Material: A completed bound book that includes
all of the information and plans submitted to the City during the CUP process
was previously submitted and is on file at the City.
2. Watershed District Permit: A Watershed District Permit was obtained for the
site and was previously submitted to the City.
3. Monitoring Wells: All required monitoring wells have been installed.
4. Groundwater Monitoring Plan: A monitoring plan with protocols is on file with
the City.
5. Excavation Below Water Table: In 2013, excavation into the groundwater table
occurred in order to produce products for the asphalt plant that require sands
that are characteristic of the deposit as it extends into the groundwater table.
Excavation occurred to an approximate depth of 15 to 20 feet into the
groundwater table. Excavation into the groundwater table is not likely in 2014.
Water level data is collected on an on-going basis and submitted annually to
the City (see Table 1).
6. Production Well Records: Records of the production well are kept. They will
be provided to the City upon request.
7. Groundwater Analysis: Groundwater samples were analyzed for DRO as
indicated in the groundwater monitoring plan (see Table 2). Results have been
supplied to the City. Currently, no gasoline is stored on site. If gasoline is
stored on site in the future, GRO will also be added to the analyte list.
8. MN County Well Index: A Figure which illustrates the site and MN County
Index wells is on file at the City.
9. Setback from Proposed Lake: The asphalt plant and related structures will be
setback at least 100 feet from the edge of the proposed water body that will be
created as part of mining operations.
10. Lake Depth: The maximum excavation into the water table will be no more
than 50 feet.
11. Truck Hauling Signs: Washington County has posted Lofton and Manning
Avenues per their requirements. Tiller has posted signs on 218`" Street per City
of Scandia requirements.
12. Lofton/Hwy 97 Intersection: Tiller Corporation restricts importing add -rock from
Lofton Ave. N. during non -daylight hours as defined in our CUP.
13. 228th Street Sign: Tiller Corporation has posted a sign at the Lofton Ave. N.
exit that restricts trucks from using 228th Street.
Tiller Corporation Page 4
2013 Annual Operators Permit Application
January 24, 2013
14. Reclamation and Sequencing Plan: An updated reclamation plan and
sequencing plan is on file with the City. Current reclamation progress is
indicated on the Site Plan submitted with the AOP application.
C. Annual Activity
1. Amount of material removed from the site: Approximately 180,500 tons of material
was removed in 2013.
2. Amount of add -rock brought onto the site: Approximately 83,500 tons of Class C
add -rock and approximately 38,000 tons of Class A and Class B add -rock was
imported to the site in 2013.
3. Amount of recycled asphalt brought to the site: Approximately 40,000 cubic yards
of asphalt for recycling was imported to the site in 2012.
4. Amount of recycled concrete brought to the site: Approximately 15,000 cubic yards
of concrete for recycling was imported to the site in 2012.
5. Area reclaimed and type of reclamation: Reclamation activities in 2013 were
limited. Suitable reclamation fill material was accepted at the Site in preparation for
ongoing reclamation. Ongoing reclamation activities are anticipated in the southern
portion of the Site near 218th St. N. during 2014. This area is shown on the Site
Plan.
6. Average number of trips hauling material to and from the site per day for the
season: The average number of trucks travelling to and from the site per day in
2013 was approximately 137 trucks per day.
D. Description of operating conditions planned for the coming year:
During the 2014 mining season, the site will continue to operate as it has in the past.
The mining operation includes the removal of overburden, excavation of sand and
gravel, crushing, washing, screening, stockpiling, and recycling of concrete and
asphalt products. Portable crushing and screening plants are brought to the site
periodically and material is excavated, processed, and stockpiled. Hot -mix asphalt is
produced and sold throughout the construction season and add rock materials are
delivered to the site as needed.
The 2014 production schedule does not anticipate processing occurring during the
2014 mining season. However, if market demand exceeds forecasts, there may be a
need for additional excavation and processing. The exact area of excavation will
depend on the required gradation and if necessary mining is expected to occur in the
active mine area as indicated on the Site Plan.
Site Plan: A Site Plan is attached which illustrates the expected active mining area in
2014, the stockpile and processing area, and reclaimed areas.
Tiller Corporation Page 5
2013 Annual Operators Permit Application
January 24, 2013
Aerial Photo: An aerial photo is attached which illustrates the active mining area in
2014, the stockpile and processing area and reclaimed areas.
Reclamation: There were limited reclamation activities in 2013. Topsoil material
suitable for reclamation was accepted at the Site and placed aside for future use.
There are limited reclamation activities anticipated for the 2014 operating season. If
suitable reclamation fill materials are accepted at the Site they will be placed in the
southern portion of the Site near 218th St. N. indicated as the 2014 Reclamation
Activity area. This area is shown on the Site Plan.
As mining progresses to the perimeter of the mining area in the future, then
reclamation; consisting of sloping, backfilling and establishment of vegetation can
occur.
Operating Conditions for 2014: The 2014 production schedule does not anticipate
processing occurring during the 2014 mining season. However, if market demand
exceeds forecasts, there may be a need for additional excavation and processing.
The exact area of excavation will depend on the required gradation and if necessary
mining is expected to occur in the active mine area as indicated on the Site Plan.
E. Inspection:
The City conducts an annual inspection of the site. The last inspection occurred on
October 24, 2013.
III. CERTIFICATION
I certify that the plans, specifications or reports for the
above described facility were prepared by me or under
my direct supervision and that I am a duly Registered
Professional Engineer under the laws of the State of
Minnesota.
Kirsten Pauly
Date: January 24, 2014 Reg. No. 21842
Tiller Corporation Page 6
2013 Annual Operators Permit Application
January 24, 2013
Table 1: Groundwater Elevations for Scandia
Scandia #741 Groundwater Elevations
Groundwater elevation levels are recorded in feet above mean sea level
NM=Not Measured (due to obstruction)
MW-2Taken out of service 6/21/2011
•, -
11/20/2013
912.88
912.89
914.35
914.20
911.70
915.74
10/25/2013
912.98
913.03
914.50
914.30
911.80
915.83
913.91
9/26/2013
913.00
913.05
914.52
914.29
911.81
915.88
8/27/2013
913.17
913.23
914.66
914.43
911.98
916.03
7/25/2013
913.19
913.29
914.75
914.41
912.06
916.09
6/25/2013
913.17
913.17
914.66
914.18
911.95
915.98
5/23/2013
912.92
912.94
914.45
913.92
911.62
915.79
913.99
4/25/2013
912.90
912.90
914.43
913.88
911.60
915.78
12/5/2_0_1_2
912.93
912.99
914.45
914.28
911.70
915.83
10/25/2012
913.14
913.19
914.64
914.50
911.98
916.01
914.17
9/26/2012
913.25
913.29
914.78
914.57
912.03
916.16
9/5/2012
913.44
913.48
914.94
914.83
912.28
916.31
7/26/2012
913.71
913.74
915.22
914.89
912.50
916.52
6/26/2012
913.67
913.67
915.12
914.89
912.50
916.46
5/22/2012
913.37
913.38
914.92
914.61
912.22
916.25
4/23/2012
913.22
913.22
914.69
914.50
912.07
916.07
914.13
3/29/2012
913.26
913.27
914.78
914.53
912.09
916.14
11/10/2011
913.74
913.78
915.19
914.99
912.55
916.55
10/3/2011
913.78
913.83
915.27
915.00
912.60
916.62
914.74
9/8/2011
913.78
913.81
915.29
914.90
912.59
916.61
8/5/2011
913.71
913.72
915.24
914.56
912.44
916.55
7/13/2011
6/21/2011
6/6/2011
5/6/2011
4/7/2011
11/23/2010
10/19/2010
9/14/2010
8/9/2010
7/6/2010
6/7/2010
4/27/2010
11/5/2009
10/21/2009
9/10/2009
8/6/2009
913.30
913.13
913.06
912.70
912.46
912.29
912.46
912.37
912.37
912.47
912.39
912.51
913.14
913.17
913.28
913.28
913.36
913.19
913.10
912.74
912.48
912.32
912.45
912.38
912.38
912.46
912.41
912.53
913.15
913.17
913.30
913.39
914.83
914.65
914.52
914.16
913.97
913.84
913.98
913.91
913.92
NM
913.94
914.03
914.70
914.72
914.85
914.88
914.34
914.14
913.97
913.69
913.49
913.47
913.62
913.55
913.56
913.57
913.65
913.77
914.37
914.50
914.55
914.70
912.07
911.97
911.89
911.53
911.22
911.02
911.24
911.11
911.12
911.19
911.17
911.28
911.89
911.93
912.04
912.15
916.17
915.99
915.88
915.53
915.35
915.18
915.34
915.23
915.22
915.28
915.30
915.42
916.07
916.08
916.22
916.27
916.13
916.02
915.68
915.50
915.32
915.46
915.36_
915.35
915.40
915.43
915.54
916.14
916.17
916.31
916.35
914.18
914.30
6/11/2009
913.55
913.58
915.08
914.83
912.36
916.49
916.60
5/18/2009
913.67
913.70
915.19
914.94
912.51
916.61
916.69
4/6/2009
10/30/2008
913.79
914.35
913.81
914.37
915.35
915.87
915.04
915.60
912.60
913.13
916.78
917.31
916.86
917.37
9/16/2008
914.51
914.57
916.06
915.81
913.28
917.48
917.54
8/7/2008
914.60
914.65
916.20
915.80
917.60
917.65
7/9/2008
914.54
914.58
916.13
915.68
917.55
917.61
6/9/2008
914.44
914.50
915.99
915.53
917.44
917.51
5/14/2008
914.29
914.34
915.38
917.29
917.37
5/6/2008
914.26
914,31
3/28/2008
914.07
914.11
2/22/2008
914.16
914.18
1/9/2008
914.30
NM
12/12/2007
914.48
NM
11/8/2007
914.70
914.74
10/11/2007
914.64
914.68
9/11/2007
914.60
914.64
7/19/2007
914.77
914.82
6/13/2007
914.85
914.91
5/2/2007
915.06
915.11
9/6/2006
915.87
915.90
Tiller Corporation Page 7
2013 Annual Operators Permit Application
January 24, 2013
The approved groundwater monitoring plan requires reading of water levels spring summer and
fall. Tiller Corporation has taken water levels more frequently, but may not continue to do so in
the future, but at minimum water levels will be read spring, summer, and fall.
Tiller Corporation Page 8
2013 Annual Operators Permit Application
January 24, 2013
Table 2: Water Quality Monitoring Results
TABLE 2 Water Quality Monitoring Results
Potable Well
10/21/2009
9/14/2010
9/29/2011
9/26/2012
9/26/2013
units
Diesel Range Organics
ND
ND
ND
ND
ND
mg/I
Total Suspended Solids
ND
161
mg/I
Nitrogen, Ammonia
0.18
mg/I
Nitrogen, Ammonia
0.051
mg/I
Phosphorous
0.65
0.13
mg/I
Phosphorous
ND
0.151
0.0941
0.391
0.11
mg/I
Production Well
10/21/2009
9/14/2010
9/29/2011
9/26/2012
9/26/2013
units
Diesel Range Organics
ND
ND
ND
ND
ND
mg/I
Total Suspended Solids
ND
161
mg/I
Nitrogen, Ammonia
0.18
mg/I
Nitrogen, Ammonia
0.053
mg/I
Phosphorous
0.65
0.13
mg/I
Phosphorous
ND
0.151
0.0941
0.391
0.11
mg/I
PZ -3
10/21/2009
9/14/2010 9/29/2011
9/26/2012
9/26/2013
units
Diesel Range Organics
ND
ND ND
ND
ND
mg/I
Total Suspended Solids
ND
Total Suspended Solids
102
161
mg/I
Nitrogen, Ammonia
0.18
mg/I
Nitrogen, Ammonia
0.048
mg/I
Phosphorous
0.65
0.13
mg/I
Phosphorous
mg/I
PZ -4
10/21/2009
9/14/2010
9/29/2011
9/26/2012
9/26/2013
units
Diesel Range Organics
ND
NO
ND
ND
ND
mg/I
Total Suspended Solids
102
161
65.3
942
46.4
mg/I
Nitrogen, Ammonia
0.048
0.15
0.041
0.14
0.13
mg/I
Phosphorous
NDI
0.151
0.0941
0.391
0.11
mg/I
PZ -5
10/21/2009
9/14/2010 9/29/2011
9/26/2012
9/26/2013 units
Diesel Range Organics
ND
NO ND
ND
ND mg/I
Total Suspended Solids
ND
ND
ND
ND mg/I
Nitrogen, Ammonia
0.11
0.067
0.11
0.09 mg/I
Phosphorous
NDI
NDI
NDI
ND mg/I
PZ -6
10/21/2009
9/14/2010
9/29/2011
9/26/2012
9/26/2013
units
Diesel Range Organics
ND
ND
ND
ND
ND
mg/I
Total Suspended Solids
11.3
11.7
ND
ND
ND
mg/I
Nitrogen, Ammonia
0.1
0.098
0.071
0.077
0.079
mg/I
Phosphorous
NDI
0.0841
NDI
NDI
0.071
mg/I
Tiller Corporation Page 9
2013 Annual Operators Permit Application
January 24, 2013
Table 2: Water Quality Monitoring Results Continued
MW -1
10/21/2009
9/14/2010
9/29/2011
9/26/2012
9/26/2013
ND
Diesel Range Organics
ND
ND
NO
NO
NO
mg/I
Total Suspended Solids
ND
Phosphorous
15
41.6
NO
mg/I
Nitrogen, Ammonia
0.048
mg/I
0.049
0.075
0.086
mg/I
Phosphorous
No,
0.089
No,
NO
ND
mg/I
MW -2
10/21/2009
9/14/2010
11/5/2010
Diesel Range Organics
ND
ND
mg/I
Total Suspended Solids
26.8
0.11*
mg/I
Nitrogen, Ammonia
0.055
NO
mg/I
Phosphorous
ND
ND
mg/I
POND
10/21/2009
9/14/2010
11/5/2010
9/29/2011
9/26/2012
9/26/2013
Diesel Range Organics
ND
0.11*
ND
NO
NO
NO
mg/I
Total Suspended Solids
ND
ND
NA
ND
NO
NO
mg/I
Nitrogen, Ammonia
NO
0.057
NA
0.069
0.078
0.089
mg/I
Phosphorous
No,
ND
NA
ND
NO
ND
mg/I
*Upon Detection of Diesel Range Organics (DRO) above the Reporting Limit of 0.10 mg/I, the
sample was further analyzed for the presence of Polycyclic Aromatic Hydrocarbons (PAHs)
which were not detected. As additional follow up, the pond was resampled for DRO in
November, 2010 at the request of the City.
Although not required, initial baseline data were obtained for all wells and results reported
herein.
Tiller Corporation Page 10
2013 Annual Operators Permit Application
January 24, 2013
AERIAL PHOTOGRAPH
2014 AOP Application
2010 FSA image from Minnesota
Geospacial Information Office
NOTES:
1. TOPOGRAPHY IS FROM A COMPILATION
AERIAL SURVEY BY MARTINEZ CORPOR.
DATED 11/11/1998, TOPOGRAPHIC SU
SUNDE LAND SURVEYING, LLC DATED
02/10/2005 FOR THE ACTIVE MINING
AREA, AND TOPOGRAPHIC DATA FROM
WASHINGTON COUNTY DATED 01/31/2
THE NORTHEASTERN 800 ACRES.
2. SETBACKS. THE FOLLOWING MINING SE
WILL BE MAINTAINED:
• 50' FROM PROPERTY LINE
• 200' FROM OCCUPIED STRUCTURE
• 100' FROM ANY CONTIGUOUS PRC
SUBDIVIDED INTO RESIDENTIAL L01
ACRES OR LESS (NOT APPLICABLE
100' FROM ROAD R -O -W
X93-253
IV
300 0 300 60(
SCALE IN FEET
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�Sund�
Engineering, PuCF
14W
CONSULTING CIVIL ENGINEERS
10830 NESBITT AVENUE SOUTH
BLOOMINGTON, MINNESOTA 55437
(952)881-3344 TELEPHONE
(952)881-1913 FAX
—.sundeolvd —
TILLER
CORPORATION
2014
ANNUAL
OPERATORS PERMIT
SCANDIA,
MINNESOTA
DATE REVISION
3/3/11 Well Labels
1119112 Add MW -e
1/2312Add Drexel prdpeM line
11-13 2013 Updatef AOP
1/2V14 Update for AOP
I HEREBY CERTIFY THAT THIS PLAN,
SPECIFICATION, OR REPORT WAS PREPARED
BY ME OR UNDER MY DIRECT SUPERVISION
AND THAT I AM DULY LICENSED
PROF SSION ENGINEER UN DER THE LAWS
OF EST EOF MI
Kirsten Pauly
DATE: 01/24/2014 REG. NO.: 842
INFORMATION:
PROJECT NO.: 93-253
DRAWN BY:
CHECKED BY: KP
APPROVED BY: KP
SCALE: Graphic
DATE:
DESCRIPTION:
SITE PLAN
SHEET NO:
C1
l ofi