Focus On Water Division
Pay For Performance
Previously Awarded Site Summary

Intended for use by NDEE'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: 10/17/02 
Site Name: Lewellen Conoco
UG# 01199-NEW-1430
Address: Highway 26 & Fairground St.
County: Garden
Closest Town Lewellen
Legal Description: SE1/4, NW1/4, S28, T16N, R42W
Contractor Performing Assessment: RDG Geoscience & Engineering Inc.
Tier 1 Date: 12/7/01 
Tier 2 Date: 8/1/02 
Property Owner’s Name: Mr. Sunny Bundren
Property Owner’s Phone Number: Voice Mail at (720) 338-9565
Contamination Types: Gasoline
PFP Bid Number: NE-005
Posting Date: 10/17/02 
Closing Date for requesting clarifications from the NDEE: 1/10/03 
Clarifications to relevant qustions will be issued by the NDEE by: 1/15/03 
Bid Submittal Deadline 1/24/03 at 2:00 pm central time.
Site Summary:

In January of 1989, three Underground Storage Tanks were removed at the site with holes in them. Ground water in the excavation had a sheen on the surface. The site was placed on the orphan tank list in March of 1991. In 1994 after other tanks were removed from the site, the Department, based on new evidence from the tank pull, named a new person as the RP. In late October of 2000 the new RP was declared insolvent causing the site to go back on to the orphan tank list. NDEQ then performed a Tier 1 and Tier 2 at the site and determined that the site should be continued into remediation as all drinking water in Lewellen is supplied by private wells. The village has no municipal drinking water.
Table 1. Final Tier 2 Sampling Results:


COC Concentrations in parts per million (mg/l) based on October 1, 2002 sampling.

Well
Benzene
Toluene
Ethylbenzene
Xylenes
Naphthalene
n-Hexane
TEH-Diesel
MTBE
Total Conc.
MW-1Ra
.250
.008
.111
.663
.103
<.005
<1
<.005
1.135
MW-5
.451
.013
.055
.073
.024
<.005
<1
.009
.625
MW-7Ra
.669
1.292
.694
2.311
.498
.007
<1
<.005
5.471
MW-10
.224
.017
.072
.092
.018
<.005
<1
.012
.435
MW-19a
.711
.034
.518
.882
.012
<.005
<1
.009
2.375
MW-1Rb*
.007
<.002
.009
.064
.013
<.005
<1
<.005
.093
MW-6*
.116
.139
.117
.804
.138
.027
<1
<.005
1.341
MW-7Rb*
.095
.200
.217
.875
.135
.042
<1
<.005
1.564
MW-19b*
.042
<.002
.045
.082
.012
<.005
<1
.005
.186
MW-21*
<.002
.002
.002
.009
<.005
<.005
<1
.009
.022
MW-14b*
<.002
<.002
<.002
<.002
<.005
<.005
<1
<.005
ND
MW-17*
<.002
<.002
<.002
<.002
<.005
<.005
<1
<.005
ND
MW-18A*
<.002
<.002
<.002
<.002
<.005
<.005
<1
<.005
ND
MW-20*
<.002
<.002
<.002
<.002
<.005
<.005
<1
<.005
ND
Plume Initial Concentration
2.565
1.705
1.840
5.855
1.162
.076
ND
.044
13.247
Plume SSTL Concentration
.508
463.50
136.64
110.00
16.04
>Sol
ND
1.885
728.57
Plume Initial Concentration above SSTLs
2.057
Not Above
Not Above
Not Above
Not Above
Not Above
Not Above
Not Above
Not Above
Numbers in red exceed SSTLs
* These monitor wells are at or below detection limits or calculated SSTLs
Table 2. SSTLs:

Well

Benzene
Toluene
Ethylbenzene
Xylenes
Napthalene
n-Hexane
TEH-Diesel
MTBE
Total Conc.
MW-1Ra
.150
>Sol
43.0
>Sol
>Sol
>Sol
>Sol
.551
43.701
MW-5
.150
>Sol
43.0
>Sol
>Sol
>Sol
>Sol
.551
43.701
MW-7Ra
.109
292
27.7
>Sol
>Sol
>Sol
194
.407
514.216
MW-10
.069
137
16.5
>Sol
13.8
>Sol
124
.260
291.629
MW-19a
.030
34.5
6.44
110
2.24
>Sol
55.7
.116
209.026
Pictures:
MAPS:
Area

(See attached file: Lewellen Survey.pdf)

SizeFile Name
361 KB Lewellen Survey.pdf
Benzene Contour
Site Specifications:

1. The land owner does not need a call before the PFP Contractor visits the site.

2. Because overexcavation is approved at this site, the PFP Contractor has the option to buy the building from the owner and remove the building. The purchase price of the building will be $48,500.00. This price does not include the cost of removing the building.

3. There are no special concrete requirements at this site.

4. The station owner (Sunny) also owns the property to the south where the Oregon Trail Motel sits.

5. The drinking water well shown on the map inside the service station, and one not shown to the southwest, will be properly abandoned by the time the contract is awarded. They are being replaced by a single new well located in the NW corner of the property.

6. Several old monitor wells and recovery wells that were used long ago are being abandoned due to tree roots in the wells or other similar problems. A complete list of abandoned wells will be posted when it is available. No wells used in the table above, for COC concentrations, are being abandoned.

Update 11/14/02-The abandoned wells are ORC wells 1,2,3,4,5,6,7,10, monitor well 2 (MW-2) and recovery wells 1 and 2 (RW-1,2). The ORC and recovery wells are not shown on the above map but they are shown in the Tier 2 supplemental information documents.


7. NDEQ reserves the option to extend the bid submittal date for this site, if needed. NDEQ is abandoning the unnecessary monitor wells that were damaged or used for ORC. NDEQ is also replacing the drinking water wells for the station and the former motel. If NDEQ experiences delays in these activities, an extension might be necessary to complete the PFP preparatory site work.
Site Questions and Answers: