Trade Winds Marina

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:	05/31/2008
Site Name:	Trade Winds Marina
UG#	101597-NM-1315
Address:	Sherman Reservoir, Loup City
County:	Sherman
Closest Town	Loup City
Legal Description:	NE, SW, SW, Sec. 36, T 16N, R14W
Contractor Performing Assessment:	RDG
Tier 1 Date:	11/22/2004
Tier 2 Date:	06/10/2006
Property Owner’s Name:	Jim Ummel
Property Owner’s Phone Number:	308-745-1187
Contamination Types:	Gasoline
PFP Bid Number:	NE-027
Posting Date:	05/31/2008
Closing Date for requesting clarifications from the NDEQ:	08/29/2008
Clarifications to relevant questions will be issued by the NDEQ by:

Bid Submittal Deadline 09/30/2008 at 2:00 pm central time.

Site Summary:

This site will be NDEQ's first soil vapor remediation contract. This also is the site about which the PFP contractors were recently sent the draft Soil Vapor Remediation attachment for the Pro Forma Contract. Trade Winds Marina is a site that has a predictable rise and fall in groundwater levels due to the Loup Basin Reclamation District filling the lake in the spring and allowing the water levels to fall during the irrigation season. The lake is then left in a lowered state during the winter only to be re-filled again in April and May. The soil vapor level at this site exceeds RBCA required cleanup levels for benzene; benzene was the only COC that exceeded SSTLs. The Trade Winds Marina building and facilities are owned by Mr. Ummel; however, the ground that the building sits on is owned by the Loup Basin Reclamation District. The Department has already discussed the cleanup with the Loup Basin Reclamation District and prospective contractors do not need to contact them.

Table 1. Final Tier 2 Sampling Results:

Highest levels recorded in each pin area.

WELL	DEPTH	Benzene in mg/m³
Area-1 (Pin 1)	16	9964
Area-2 (Pin 2)	16	33102
Area-3 (Pin 3)	16	37495
Area-4 (Pin 4)	12	61940
Area-5 (Pin 5)	16	34868
Area-6 (Pin 6)	12	4352
Area-7 (Pin 7)	16	4965
Area-8 (Pin 8)	16	18081
Area-9 (Pin 9)	16	10415
Area-10 (Pin 10)	16	16798
Area-11 (Pin 11)	16	14277
Area-12 (Pin 12)	16	5888
Total Concentration of Areas		252145

Table 2. SSTLs:

The final SSTL for all area's across the site is, less than or equal to 836 mg/m³ Benzene.

Pictures:

MAPS:
Area

Benzene Contour

Site Specifications:

1. All interim sampling locations at this site must be within five feet of the pin placement for each area.

2. Final sampling at this site will be within ten feet of the pin placement for each area.

3. This site is not eligible for overexcavation.

4. Final sampling for this site can only occur in the month of March of any given year. This is due to the lower groundwater/lake levels that occur during this particular month.

This is important to keep in mind for system shutdown before final sampling.

5. Interim sampling can be performed at any time of the year, and sampling depth will be determined by Attachment 1. Except for Area 7, sampling in the unsaturated zone is required at 12 feet below surface level.

6. Due to the high-use recreational nature of this site, NDEQ is specifying that a type of SVE or SVE/AS cleanup system must be used.

7. Please notify the marina owner, Mr. Ummel, before site visits.

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.

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