Nebraska Department of Environmental Quality
Pay For Performance
Site Summary
Intended for use by NDEQ's pre-qualified Pay for Performance Contractors. Potential bidding Contractors
should not
contact the State Contractor that performed the Tier 1 & 2 with questions about the site. Those types of questions should be addressed to Phil Hargis at (402) 471-3150 or Email at
Phil.Hargis@Nebraska.Gov
.
.
Date:
08/04/2010
Site Name:
Dannebrog Auto
UG#
092500-QK-1545
Address:
114 Roger Welsch Ave.
County:
Howard
Closest Town
Dannebrog
Legal Description:
NW NW NE S11 T13N R11W
Contractor Performing Assessment:
RDG
Tier 1 Date:
06/24/2004
Tier 2 Date:
10/12/2006
Property Owner’s Name:
Mel Grimm
Property Owner’s
Phone Number:
308-226-2430
Contamination Types:
Gasoline
PFP Bid Number:
NE-036
Posting Date:
12/21/2010
Closing Date for requesting clarifications from the NDEQ:
01/21/2011
Clarifications to relevant questions will be issued by the NDEQ by:
12/28/2010
Bid Submittal Deadline
03/04/2011
at 2:00 pm central time.
Site Summary:
Dannebrog Auto was first reported to NDEQ on September 25, 2000, because of the removal of three underground storage tanks. Evidence of contamination was noted during the tank removal, and in August 2001 the site was activated. In December 2001 the site was added to the orphan tank priority list and was activated for a state-led investigation in January 2004. The site failed the Tier 1 and Tier 2 investigations because of free product present in one well and high dissolved benzene levels in a second well. The site was then selected for cleanup under the PFP program, and the PFP supplemental information was gathered in 2008. The site was resampled in 2010. Free product is still present in one well and has increased in thickness over the past few years. This will be a combined free product and dissolved phase cleanup with interim payments determined from the dissolved levels present.
Table 1. Final Tier 2 Sampling Results:
Well
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
n-Hexane
Napthalene
Diesel
Total Concentration
MW-2
13.000
FP
FP
FP
FP
FP
FP
FP
13.000
MW-3
4.070
.940
1.440
4.990
.00274
.0299
.157
1.020
12.64964
MW-9
4.560
1.350
.698
1.580
1.060
ND
.029
2.990
12.267
MW-10
2.650
.361
.928
2.620
.00693
.0241
.109
.514
7.21303
MW-11
11.500
10.300
1.510
5.560
.944
.089
.244
2.310
32.457
MW-12
5.000
2.350
1.200
3.200
1.040
.047
.186
1.600
14.623
OW-3
1.490
.169
.474
1.210
ND
.00494
.0707
.483
3.90164
Total Concentration of Wells Exceeding SSTLs
42.270
15.470
6.250
19.160
3.05367
.19494
.7957
8.917
96.11131
SSTL Total From Table 2
12.520
>SOL
>SOL
>SOL
43.951
>SOL
>SOL
19,019.000
19,075.471
Concentration Over SSTLs**
29.750
Not Over
Not Over
Not Over
Not Over
Not Over
Not Over
Not Over
Not Over
MW-1*
.448
.0148
.109
.129
.106
ND
.00741
ND
.81421
MW-4*
.212
.0123
.0944
.212
.0876
.00262
.018
ND
.63892
MW-5*
ND
ND
.00176
ND
.151
ND
ND
.501
.65376
MW-6*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-7*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-8*
ND
ND
ND
ND
ND
ND
ND
ND
ND
Units in mg/l sampled on 07/28/10.
* These monitor wells are at or below detection limits or calculated SSTLs.
** The concentration over the SSTls is the figure used to calculate the 25, 50, and 75% reduction payment.
Wells with free product have an assumed dissolved Benzene concentration that will be used for interim payments once the free product is removed. Bassed on sampling results at this site, the assumed level is 13 mg/l.
Table 2. SSTLs:
Well
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
n-Hexane
Napthalene
Diesel
MW-2
2.014
>SOL
>SOL
>SOL
7.056
>SOL
>SOL
3047
MW-3
1.595
>SOL
>SOL
>SOL
5.623
>SOL
>SOL
2444
MW-9
2.002
>SOL
>SOL
>SOL
7.034
>SOL
>SOL
3046
MW-10
2.014
>SOL
>SOL
>SOL
7.056
>SOL
>SOL
3047
MW-11
2.014
>SOL
>SOL
>SOL
7.056
>SOL
>SOL
3047
MW-12
2.014
>SOL
>SOL
>SOL
7.056
>SOL
>SOL
3047
OW-3
.867
>SOL
>SOL
>SOL
3.070
>SOL
>SOL
1341
MW-1
.448
1.000
.700
10.000
.106
4.000
.020
3047
MW-4
.212
1.000
.700
10.000
.0876
4.000
.020
3047
MW-5
.005
1.000
.700
10.000
.151
4.000
.020
3047
MW-6
.005
1.000
.700
10.000
.020
4.000
.020
3047
MW-7
.005
1.000
.700
10.000
.020
4.000
.020
3047
MW-8
.005
1.000
.700
10.000
.020
4.000
.020
3047
Pictures:
MAPS:
Area
Benzene Contour
Site Specifications:
1. If overexcavation is under consideration by the Contractor for this site, it must be cleared with the property owner.
2. No advance notice is needed if you are going to inspect the property. If you would like to speak with Mr. Grimm at the site, he is requesting that you give him a day or two notice with a phone call so he can arrange to be on site.
.
Department Contacts:
Phil Hargis and David Chambers at (402) 471-3150
For a complete copy of the file,
please follow the copying instructions on NDEQ’s PFP web site.
DEQ.NE.Gov Home Page
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