MODIFICATION
B -- Geothermal for District Heating and Cooling Feasibility Study - Amendment 1
- Notice Date
- 3/24/2010
- Notice Type
- Modification/Amendment
- NAICS
- 541690
— Other Scientific and Technical Consulting Services
- Contracting Office
- United States Trade and Development Agency, USTDA, USTDA, 1000 Wilson Boulevard, Suite 1600, C/O US TDA 1000 Wilson Boulevard, Suite 1600, Arlington, Virginia, 22209-3901
- ZIP Code
- 22209-3901
- Solicitation Number
- 2010-21007A
- Archive Date
- 4/30/2010
- Point of Contact
- Nina Patel, Phone: (703) 875-4357
- E-Mail Address
-
npatel@ustda.gov
(npatel@ustda.gov)
- Small Business Set-Aside
- N/A
- Description
- Geo-Loop Inc. Model YP 2 Your Power Hydraulic crawler drill This RFP has been amended to include clarification from the Grantee on the following technical questions as well as the two attachments below. 1. With respect to Task 2, has the architectural design work been completed to a sufficient level to be considered one of these three and if so which level of completion, Schematic Design, Design Development, or Construction Documents? If not will architectural drawings be completed prior to commencement of the geothermal feasibility study? The architectural design and master plan have been completed. Please visit the following site for more detail about the Kober Affordable Housing Project: http://www.uci.ps/kober/index.php It is possible, however, that some changes may be made to the architectural designs in the future. This brings me to an important point about the feasibility study: the objective is essentially to build a sort of model that will easily accommodate different heating/cooling loads and changes in the input parameters. For example, if the apartment cooling load decreases from 20 kW to 15 kW due to design changes, it should not be difficult to determine the total required bore field, system cost, and effects on the system output. Although the study will focus on the Kober Affordable Housing Project, the idea is to create study/model that can be applied to different housing projects in the future. 2. What is the maximum depth to which the Grantee's drilling rig can drill? The maximum depth to which we will allow our Enteco E4 drilling rig to drill is 120 meters (specs are attached). We prefer to keep our boreholes at a maximum 100 meter depth. Although our rig has drilled to deeper depths in the past, drilling below 100-120 meters puts significant pressure on our rig and risks losing an entire drill stem. The West Bank's geology is mainly composed of limestone rock with pockets of sandstone. In the past, although this occurs infrequently, we have abandoned boreholes due to the difficulty of penetrating through earth. This usually occurs due to fractures in the rock formation at random depths. We do expect that a drilling expert will be supervising the drilling of the thermal conductivity test holes. 3. What is the standard or typical borehole diameter on the drill bits of the Grantee's rig? Our drill bits are 127 millimeters in diameter, which drill a 5" borehole. 4. Related, what is the maximum tremmie pipe length that can be used to grout a maximum depth borehole (i.e. you can only grout up to 300' but can drill a 400' borehole)? We use a GeoLoop grout pump and mixer (manufactured in the US, specs attached). We currently use an 1 ¼" diameter tremmie pipe that is 120 meters in length.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/TDA/TDA1/TDA1/2010-21007A/listing.html)
- Record
- SN02101657-W 20100326/100325011818-b4fd1b8dd7289630a88f5fc323b20694 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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