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.
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Date:06/24/2003
Site Name:Cozad Service Station
UG#041291-KM-1400
Address:Highway 20 and Main St., Northeast Corner
County:Cherry
Closest TownWood Lake
Legal Description:NE NW NW S27, T31N, R25W
Contractor Performing Assessment:GSI
Tier 1 Date:01/01/95
Tier 2 Date:05/08/2003
Property Owner’s Name:Dan and Sherry Cozad
Property Owner’s Phone Number:402-967-3318
Contamination Types:Gasoline & Diesel
PFP Bid Number:NE-007
Posting Date:06/25/2003
Closing Date for requesting clarifications from the NDEQ:08/08/2003
Clarifications to relevant questions will be issued by the NDEQ by:08/13/2003
Bid Submittal Deadline 08/29/2003 at 2:00 pm central time.

Site Summary:


In April of 1991, four Underground Storage Tanks were removed at this site. Contaminated soils were noted in the base of the excavation. The site was added to the orphan tank list January of 1991. Also in January of 1994 the site was activated under the ERCS Contract, and a site investigation was initiated. The Step 1 and Step 2 investigations were finished in early 1995, and a Remedial Alternatives report was considered for the site. The site was monitored for the next several years due to financial limitations for the program, and in 2001 the site was re-examined through the Tier 2 process. After failing the Tier 2 process, the site was determined to be a good candidate for Pay For Performance, and the necessary information was collected for the site to go out for bid.




Table 1. Final Tier 2 Sampling Results:

COC Concentrations in parts per million (mg/l).

Well
Benzene
Toluene
Ethyl-
benzene
Xylenes
MTBE
n-Hexane
Naphthalene
TEH-
Diesel
Total Conc.
MW-1
.945
18.400
2.140
12.800
ND
.445
.772
2.990
38.492
MW-2
.397
2.880
.982
5.670
ND
.056
1.305
2.790
14.080
MW-4
14.900
14.700
1.300
13.600
ND
.190
1.520
14.600
60.810
MW-15
2.750
2.320
1.200
2.070
.008
.379
.558
3.420
12.705
MW-16
13.900
19.700
1.870
10.400
ND
.344
.614
2.800
49.628
Plume Total Concentration
32.892
58.000
7.492
44.54
ND
1.414
4.769
26.60
175.715
Plume SSTL Concentration
2.136
458
486.000
>Sol
ND
>Sol
31.000
3,788
4,765.1
Plume Initial Concentration above SSTLs
30.756
Not Over
Not Over
Not Over
ND
Not Over
Not Over
Not Over
Not Over
MW-3*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-5*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-6*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-7*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-9*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-11*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-12*
ND
ND
ND
ND
ND
ND
ND
ND
ND
MW-13*
.005
ND
ND
ND
ND
ND
ND
ND
.005
MW-14*
ND
ND
ND
ND
ND
ND
ND
ND
ND

Numbers in red exceed the SSTLs.
* These monitor wells are at or below detection limits or calculated SSTLs.



Table 2. SSTLs:
COC Concentrations in parts per million (mg/l)
Well
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
n-Hexane
Naphthalene
TEH-
Diesel
MW-1
.302
458
66
>Sol
1.150
>Sol
31
541
MW-2
.355
>Sol
78
>Sol
1.340
>Sol
>Sol
634
MW-4
.493
>Sol
114
>Sol
1.860
>Sol
>Sol
871
MW-15
.493
>Sol
114
>Sol
1.860
>Sol
>Sol
871
MW-16
.493
>Sol
114
>Sol
1.860
>Sol
>Sol
871

Pictures:
PHOTO4.pdf PHOTO6.pdf


MAPS:
Area
Survey.PDF



Benzene Contour
Benzene.PDF

Site Specifications:

1. The property owner wishes to keep the building.

2. The property owner would like to be contacted before the PFP Contractor visits the site. Please contact Dan or Sherry Cozad to provide advance notice of the date and time you wish to see the property.

3. It will be the responsibility of the PFP Contractor to acquire off-site access for remedial activities. This has not been a problem in the past. The property owner to the North is the Ostermen's. They can be reached at 402-967-3470 and we have spoken to her about the future of this site.

4. During the AS/SVE pilot test, the State Contractor had to shut down the procedure due to vapor entry into the former service station. As this building is evidently prone to receiving vapors, the Department is placing increased importance on the technology portion of the three criteria that are used to select the PFP Contractor. As the Department is very concerned about the building, a short discussion concerning protection of this building should be included. The discussion would center around protection of the building based on the cleanup technology you have selected for this site. By including this requirement the Department is ensuring the PFP Contractor has visited the site and has a plan ready to address the situation.

5. After selection of the winning bidder the Owner, PFP Contractor and the Department will meet together to discuss site details as this is a hands-on owner and he wants to be involved during this process. As always, the PFP Contractor can facilitate these talks by running your ideas by the Cozads during your site visit.

6. There has been free product noted in monitor wells #2 and #4 occasionally.

7. Overexcavation is an option at this site. The front area is paved with concrete. Any concrete removed will need to be replaced.
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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.



Nebraska Department of Environmental Quality
1200 "N" Street, Suite 400
P.O. Box 98922
Lincoln, Nebraska 68509
(402) 471-2186