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Shot Tower Survey Consultant SelectionTHE CITY OF DUB ~ MasEerpiece ~m the Mississi~api MEMORANDUM May 30, 2007 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: Shot Tower Archeological Investigation -Amended Contract Planning Services Manager Laura Carstens is recommending approval of an Amended Contract with Great Lakes Archeological Research Center for additional services associated with the Shot Tower Archeological Investigation in the amount of $14,172.48. I concur with the recommendation and respectfully request Mayor and City Council approval. ,z, ~~~ Michael C. Van Milligen MCVM/jh Attachment cc: Barry Lindahl, City Attorney Cindy Steinhauser, Assistant City Manager Laura Carstens, Planning Services Manager THE CITY OF DUB E MEMORANDUM Masterpiece on the Mississippi January 30, 2007 TO: Michael C. Van Milligen, City Manager FROM: Laura Carstens, Planning Services Manager SUBJECT: Shot Tower Archeological Investigation -Amended Contract INTRODUCTION The purpose of this memo is to transmit for City Council review and approval the Great Lakes Archeological Research Center Amended Contract for additional services associated with the Shot Tower Archeological Investigation. DISCUSSION The City has committed $200,000 for the rehabilitation and interpretation of the Shot Tower as part of the Americas River project at the Port of Dubuque. In 2005, the City received a $15,500 Hisforic Resource Development Program grant from the State Historical Society of Iowa (SHSI) for the archeological survey required by the National Park Service (NPS). During the archeological investigation, the archeologist and Loras College students excavated the southeast corner of the Shot Tower. They uncovered a portion of the historic Shot Tower well and the well was found to be in good condition. City, NPS, and SHSI Staff met to discuss the findings and agreed the well should be exposed and incorporated into the final Shot Tower design and experience. On February 20, 2006, the City Council approved the issuance of a Request for Proposals for the Shot Tower Archeological Survey which was budgeted to cost $30,000. On March 13, 2006, the Consultant Selection Committee met and recommended selecting Great Lakes Archeological Research Center (GLARC) to perform the archeological survey. To date, compensation for the work performed by GLARC is $14,315.47. The additional work to be performed by GLARC is outside the scope of the initial contract and State requirements for the completion of the Shot Tower Archeological Investigation. The new contract, which will allow for the excavation of the remainder of the fill to expose the Shot Tower well, varies based on Loras Student participation. If Loras students are not available to assist with the excavation, the compensation to GLARC will be $14,172.48. If Students are available, compensation will be $11,432.02. The City is currently working with Loras College to determine whether Loras students will be able to participate in the Shot Tower Excavation. Compensation for either scenario will be under the approved $30,000 budget. RECOMMENDATION I recommend that the City Council approve the enclosed amended contract and authorize the Mayor to sign the enclosed contract to allow for the additional excavation of the interior of the Shot Tower with compensation not to exceed $14,172.48. Enclosures ~~r David Johnson City of Dubuque City Hall 50 West 13`~ Street Dubuque, Iowa 52001-4864 Apri123, 2007 )ZE: Archaeological Investigations Dubuque Shot Tower Project Deaz Mr. Johnson, The following modifications aze for the above referenced project. Section 2.4 Archaeological Field Work This section will include additional field tasks identified in the Data Recovery Plan and MOA for the project (see Attachment 1 }. Section 5.0 Project Schedule Archaeological Field Studies will be completed no later than (NLT) June 30, 2007 Laboratory Analysis will be completed NLT July 30, 2007 Draft Report Submittal will be completed NLT August 1, 2007 6.1 Compensation Compensation will include one of the two options: (a) an additional $14,172.48 for a total contract amount of $28,487.95 assuming there is no assistance from volunteer Loras College students; or (b) an additional $11,432.02 for a total contract amount of $25,747.49 assuming there is assistance from volunteer Loras College students. Sincerely, ~/ Jennifer R. Harvey, President Concu . v Uj~ Name, T e /~~~ ate EXHIBIT 1 Archaeological Data Recovery Plan for the Excavation of Deposits Filling the Interior of the George W. Rogers Company Shot Tower (13DB838) in the City of Dubuque, Iowa Introduction The following archaeological data recovery plan is intended to guide the excavation of remaining fill deposits within the George W. Rogers Company Shot Tower (13DB838), also known as the Dubuque Shot Tower, located in the City of Dubuque, Iowa, and is based upon archaeological and geomorphological investigations performed by Great Lakes Archaeological Research Center, Inc., and Strata Morph Geoexploration, Inc. as a component of the Shot Tower Rehabilitation Project. The rehabilitation project is sponsored by City of Dubuque (City), which is receiving funding through a Historic Sites Preservation grant (No. 04-007) and a Historic Resource Development Program grant (No. 06-022) awarded by the State Historical Society of Iowa, and a Save America's Treasures grant (No. 19-04-ML-0110) awarded by the National Park Service. Prior archaeological and geomorphological investigations conducted as part of the rehabilitation project attempted to determine how much of the Shot Tower base is buried below the present ground surface and the accuracy of the 1934 Historic American Buildings Survey (HAWS) sketches depicting the structure's interior foundation features. Of the two goals, only that related to the accuracy of the 1934 HAWS sketches, and the data that support it, is pertinent to the current data recovery plan. After the relevant data are briefly reviewed in the following paragraphs, the data recovery plan developed for the excavation of the remaining fill deposits within the Shot Tower (12DB838) is presented. Prior ArchaeologicaUGeomorphological Investigations The archaeological and geomorphological investigation of the Shot Tower interior, which measures approximately 14 feet square, began with the manual extraction of three soil cores followed by the excavation of a 5 feet square (ft sq) unit filling the structure's southeastern comer. Investigators extracted the three soil cores using an Oakfield soil probe with extensions. Probe No. 1 sampled the southwestern corner of the tower, while Probe No. 2 sampled the southeastern comer, and Probe No. 3 recovered deposits from the center of the structure. Each probe extended to varying depths; however, all revealed a uniform stratigraphic sequence consisting of gravel fill over sand resting on a rubble layer on top of a homogenous sandy layer. The sandy layer represents dredge spoil that similarly occurs outside and surrounding the Shot Tower base. Probe Nos. 1 and 2 extended 6.8 ft and 5.7 ft respectively below the ground surface (bgs), while Probe No. 3 continued down approximately 10.6 ft bgs before ending at the presumed top of a brick rubble deposit. This deposit is interpreted as material that collected in the center of the structure, possibly in the shot catchment welUtub/reservoir, sometime after the 1911 fire that resulted in the commercial abandonment of the Shot Tower. In contrast, Probe No. 1 ended in the sandy dredge spoil whereas Probe No. 2 was thought to have encountered a structural surface, possibly a floor that prevented it from being pushed deeper. As a result of the depth of the fill and the potential presence of a structural surface revealed by Probe No. 2, together with a desire to be able to relate subsurface deposits by 0.42 ft wide. Discrepancies between the two sets of measurements where comparable data are known, is due to variations of widths and heights, which the two sets of recorders capture in their reported measurements, along a tier. Complete exposure of the interior of the Shot Tower will reveal how uniform each tier is regarding its height and width. Suffice it to state at this time, the HABS recorders observed a portion, if not the entire interior base of the tower. Near Future Archaeological Investigations Upon realizing that the HABS drawing depicting the interior side of the foundation is at least in part accurate, and recognizing that the restoration and interpretation of the Shot Tower will be enhanced by exposing the lower structural features, the City consulted with the Iowa State Historic Preservation Office and the National Park Service about the archaeological excavation of the remaining interior fill. Consultation was required in order to determine if the removal of the remaining interior fill would have an adverse affect upon the structure's stability and remaining interior archaeological deposits. As a result of this consultation, an archaeological data recovery document was created in order to guide the excavation of the remaining fill from within the Shot Tower. The data recovery plan, which is presented in greater detail in the following sections, consists of five broadly defined tasks: excavation (Task 1), documentation (Task 2), laboratory analysis and data organization/interpretation (Task 3), report preparation (Task 4), and transfer of artifacts and documentary records to a curation facility (Task 5). Data Recovery Plan Task 1: Excavation The interior of the Shot Tower measures approximately 14 ft sq and encompasses approximately 196 square feet (sq ft) of which 25 sq ft have been partially excavated, mapped, profiled, and photographed. In order to maintain consistency in the excavation and documentation of the southeastern corner of the Shot Tower, the interior of the tower will be divided into uneven quarters, and each quarter will be excavated as a separate unit for purposes of spatial control. The northern edge of the existing southeastern unit (Unit 1) will be extended westward while the western one will be extended northward to create the four quarters: the southeastern quarter (Unit 1) will measure 5 ft by 5 ft, the southwestern quarter (Unit 2) will measure 9 ft east-west by 5 ftnorth-south, the northwestern quarter (Unit 3) will measure 9 ft sq, and the northeastern quarter (Unit 4) will measure 9 ft north-south by 5 ft east-west. Generally, fill removed from each unit will not be screened; however, exceptions will be made for the fill excavated from the upper surfaces of additional floor supports, which are expected to be exposed in each corner, or contacting the lower surface of the foundation. Similarly, deposits removed from the shot catchment well/tub/reservoir will be screened. In addition, soil samples will be collected from the fill contacting the lower foundation surface and that from within the shot catchment well/tub/reservoir in order to measure levels of residual hazardous by- products of historical lead shot production. Excavation of the four units will follow a patterned schedule in order to extend existing Unit 1 wall profiles the length of the north and west dimensions of the Shot Tower's interior. Fill will be removed from Units 2, 3, and 4 in 3-to-4 ft intervals; however, finer records generated by the study will be transferred to the National Mississippi River Museum and Aquarium or another designated facility in Iowa for curation and archival purposes (also see Task 3). Transferal of project related materials for curation and archival purposes will mark the end of the proposed archaeological project investigating the Shot Tower's interior fill deposits. EXHIBIT 2 Cost Great Lakes Archaeological Research Center A~ 427 East Stewart Street ~ Milwaukee, Wisconsin 53207 ~ (414) 481-2093 Estimate Project: E Dubuque Shot TowerArrhaeo%gicallnvestigation City of Dubuque, Iowa Additional Archaeo%gica/Studies Date; March 27, 2007 A. Direct Salary Costs 1. Archival Research Person Rate Hours Cost Principe/Investigator $22.00 8 $176.00 Research Assodate $15.00 12 $180.00 2. Field Investigations Person Rate Hours Cost Principe/Investigator $22.00 12 $264.00 Archaeo%gist $18.00 72 $1,296.00 Technicians (Z) $18.00 144 $2,592.00 3. Report Person Rate Hours Cost Principe/Investigator $25.00 40 $1,000.00 Research Associate $15.00 16 $240.00 B. Direct Charges 1. Flm and Film Developing $65.00 2. Meals (28 person days @ $25/day) $700.00 3. Lodging (25 person days @ $50/day) $1,250.00 A. $5,748.00 B. $2,015.00 C. Indirect Costs Overhead is 92.28% of Direct Labor (A) C. $5,304.25 D. Fixed Cost Profit Fee (30% of items A & C) D. $1,105.23 E. Subcontractor E. $0.00 F. Total Estimate F. ;14,172.48 EXHIBIT 3 ~*~~ COSt Estimate Projeci:• Dubuque Shot TowerArchaeo%gicallnvestigation City of Dubuque, Iowa Date: Ma~rh 27, 2007 A. Direct Salary Costs 1. Archival Research Great Lakes Archaeological Research Center 427 East Stewart Street Milwaukee, Wisconsin 53207 (414) 481-2093 Person Rate Hours Cost Principa/Investigator $22.00 8 $176.00 Research Associate $15.00 8 $120.00 2. Field Investigations Person Rate Hours Cost Principa/Investigator $22.00 8 $176.00 Archaeo%gist $18.00 56 $1,008.00 Technicians (Z) $18.00 112 $2,016.00 3. Report Person Rate Hours Cost Principa/Investigator $25.00 40 $1,000.00 Research Associate $15.00 16 $240.00 B. Direct Charges 1. Film and Film Developing $65.00 2. Meals (18 person days @ $25/day) $450.00 3. Lodging (18 person days @ $50/day) $900.00 C. Indirect Costs Overhead is 92.28% of Direct Labor (A) D. Fixed Cost Profit Fee (30% of items A & C) E. Subcontractor F. Total Estimate A. $4,736.00 B. $1,415.00 C. $4,370.38 D. $910.64 E. F. X11,432.02 ~~r David Johnson City of Dubuque City Hall 50 West 13~' Street Dubuque, Iowa 52001-4864 April 23, 2007 RE: Archaeological Investigations Dubuque Shot Tower Project Dear Mr. Johnson, The following modifications are for the above referenced project. Section 2.4 Archaeological Field Work This section will include additional field tasks identified in the Data Recovery Plan and MOA for the project (see Attachment 1). Section 5.0 Project Schedule Archaeological Field Studies will be completed no later than (NLT) June 30, 2007 Laboratory Analysis will be completed NLT July 30, 2007 Draft Report Submittal will be completed NLT August 1, 2007 6.1 Compensation Compensation will include one of the two options: (a) an additional $14,172.48 for a total contract amount of $28,487.95 assuming there is no assistance from volunteer Loras College students; or (b) an additional $11,432.02 for a total contract amount of $25,747.49 assuming there is assistance from volunteer Loras College students. Sincerely, .- Jennifer R. Harvey, President Concur: Name, Title Date EXHIBIT 1 Archaeological Data Recovery Plan for the Excavation of Deposits Filling the Interior of the George W. Rogers Company Shot Tower (13DB838) in the City of Dubuque, Iowa Introduction The following archaeological data recovery plan is intended to guide the excavation of remaining fill deposits within the George W. Rogers Company Shot Tower (13DB838), also known as the Dubuque Shot Tower, located in the City of Dubuque, Iowa, and is based upon archaeological and geomorphological investigations performed by Great Lakes Archaeological Research Center, Inc., and Strata Morph Geoexploration, Inc. as a component of the Shot Tower Rehabilitation Project. The rehabilitation project is sponsored by City of Dubuque (City), which is receiving funding through a Historic Sites Preservation grant (No. 04-007) and a Historic Resource Development Program grant (No. 06-022) awarded by the State Historical Society of Iowa, and a Save America's Treasures grant (No. 19-04-ML-0110) awarded by the National Park Service. Prior archaeological and geomorphological investigations conducted as part of the rehabilitation project attempted to determine how much of the Shot Tower base is buried below the present ground surface and the accuracy of the 1934 Historic American Buildings Survey (NABS) sketches depicting the structure's interior foundation features. Of the two goals, only that related to the accuracy of the 1934 NABS sketches, and the data that support it, is pertinent to the current data recovery plan. After the relevant data are briefly reviewed in the following paragraphs, the data recovery plan developed for the excavation of the remaining fill deposits within the Shot Tower (12DB838) is presented. Prior ArchaeologicaUGeomorphological Investigations The archaeological and geomorphological investigation of the Shot Tower interior, which measures approximately 14 feet square, began with the manual extraction of three soil cores followed by the excavation of a 5 feet square (ft sq) unit filling the structure's southeastern corner. Investigators extracted the three soil cores using an Oakfield soil probe with extensions. Probe No. 1 sampled the southwestern corner of the tower, while Probe No. 2 sampled the southeastern corner, and Probe No. 3 recovered deposits from the center of the structure. Each probe extended to varying depths; however, all revealed a uniform stratigraphic sequence consisting of gravel fill over sand resting on a rubble layer on top of a homogenous sandy layer. The sandy layer represents dredge spoil that similarly occurs outside and surrounding the Shot Tower base. Probe Nos. 1 and 2 extended 6.8 ft and 5.7 ft respectively below the ground surface (bgs), while Probe No. 3 continued down approximately 10.6 ft bgs before ending at the presumed top of a brick rubble deposit. This deposit is interpreted as material that collected in the center of the structure, possibly in the shot catchment welUtub/reservoir, sometime after the 1911 fire that resulted in the commercial abandonment of the Shot Tower. In contrast, Probe No. 1 ended in the sandy dredge spoil whereas Probe No. 2 was thought to have encountered a structural surface, possibly a floor that prevented it from being pushed deeper. As a result of the depth of the fill and the potential presence of a structural surface revealed by Probe No. 2, together with a desire to be able to relate subsurface deposits and structural features to the Shot Tower walls, investigators excavated the 5 ft sq unit adjoining the southern and eastern walls of the tower's southeastern corner. The unit's size insured that it overlapped the current, concrete sills of the lower window openings present on the eastern and southern sides of the structure. Fill excavated from the unit was screened through one-quarter inch hardware mesh cloth, and artifacts were collected and bagged by provenience. Excavation of the unit encountered the previously described gravel fill over sand resting upon rubble fill on top of the sandy dredge spoil sequence, and exposed structural features before being terminated at a maximum depth of approximately 8 ft bgs. The excavation was terminated at 8 ft due to concern for the safety of excavators. Artifacts were collected from the rubble layer, which is interpreted as the circa 1960 ground surface where debris related to the early 1960s effort to stabilize the Shot Tower collected. Prior to circa 1960, the surface probably represented the top of the sandy dredge spoil deposited across the area in order to raise the ground above flood water level for economic development during the early 1940s. While the soil probes suggested the sandy dredge spoil to be homogenous, excavation of the unit revealed clay clasts and strata occur between sandy strata, and it is one of the stiff clay deposits, and not a structural feature, that prevented Probe No. 2 from penetrating deeper into the deposits. The dredge spoil deposits yielded several clam shells, but no other artifacts. Structural Features Structural features related to the foundation and lower flooring of the Shot Tower began appearing approximately 4.0 ft bgs. The first feature exposed is a roughly triangular arrangement of cemented rocks, which subsequently has been shown to be resting on a foundation comprised of at least three stepped tiers. Several pieces of flat glass and the articulated shoulder bones, which show butcher (saw) marks, of a large mammal rested on or between the rocks. In addition, flecks of charcoal are present between the rocks and no doubt represent trapped debris from the 1911 fire. The upper surface of the rock arrangement is roughly even in elevation with an approximately 2 inch wide rock ledge protruding from and running the exposed length of the tower's southern wall. Both the rock arrangement and ledge are tentatively interpreted as supports for a lower wooden floor, which probably once encircled the shot catchment welUtub/reservoir that existed in the central, lower portion of the foundation. Neither support feature is depicted on the 1934 HABS scaled drawings; however, the tiered foundation is shown. The HABS drawing shows the interior side of the foundation defined by three stepped, tiers. Excavation of the unit to a depth of 8 ft exposed three tiers, and a hand probe extended approximately 1.5 ft deeper suggests another depicted surface---the possible floor--exists. The surface of the upper tier begins approximately 4.8 ft bgs and has a curved edge that extends 1.4-to-2.25 ft from the wall before dropping 1.5-to-1.9 ft to the top of the second tier, which has a curved edge and is approximately 0.42 ft wide. The top of the second tier rises 0.75-to-1.2 ft above the third tier, which measures approximately 0.42 ft wide and is similarly curved. On the HABS drawing, the first tier is shown as 1.7 ft high and 0.67 ft wide at its narrowest, while the second tier is described as 1.0 ft high by 0.5 ft wide, and measurements for the third tier are given as 1.6 ft high by 0.42 ft wide. Discrepancies between the two sets of measurements where comparable data are known, is due to variations of widths and heights, which the two sets of recorders capture in their reported measurements, along a tier. Complete exposure of the interior of the Shot Tower will reveal how uniform each tier is regarding its height and width. Suffice it to state at this time, the HABS recorders observed a portion, if not the entire interior base of the tower. Near Future Archaeological Investigations Upon realizing that the HABS drawing depicting the interior side of the foundation is at least in part accurate, and recognizing that the restoration and interpretation of the Shot Tower will be enhanced by exposing the lower structural features, the City consulted with the Iowa State Historic Preservation Office and the National Park Service about the archaeological excavation of the remaining interior fill. Consultation was required in order to determine if the removal of the remaining interior fill would have an adverse affect upon the structure's stability and remaining interior archaeological deposits. As a result of this consultation, an archaeological data recovery document was created in order to guide the excavation of the remaining fill from within the Shot Tower. The data recovery plan, which is presented in greater detail in the following sections, consists of five broadly defined tasks: excavation (Task 1), documentation (Task 2), laboratory analysis and data organization/interpretation (Task 3), report preparation (Task 4), and transfer of artifacts and documentary records to a curation facility (Task 5). Data Recovery Plan Task l: Excavation The interior of the Shot Tower measures approximately 14 ft sq and encompasses approximately 196 square feet (sq ft) of which 25 sq ft have been partially excavated, mapped, profiled, and photographed. In order to maintain consistency in the excavation and documentation of the southeastern corner of the Shot Tower, the interior of the tower will be divided into uneven quarters, and each quarter will be excavated as a separate unit for purposes of spatial control. The northern edge of the existing southeastern unit (Unit 1) will be extended westward while the western one will be extended northward to create the four quarters: the southeastern quarter (Unit 1) will measure 5 ft by 5 ft, the southwestern quarter (Unit 2) will measure 9 ft east-west by 5 ftnorth-south, the northwestern quarter (Unit 3) will measure 9 ft sq, and the northeastern quarter (Unit 4) will measure 9 ft north-south by 5 ft east-west. Generally, fill removed from each unit will not be screened; however, exceptions will be made for the fill excavated from the upper surfaces of additional floor supports, which are expected to be exposed in each corner, or contacting the lower surface of the foundation. Similarly, deposits removed from the shot catchment welUtub/reservoir will be screened. In addition, soil samples will be collected from the fill contacting the lower foundation surface and that from within the shot catchment welUtub/reservoir in order to measure levels of residual hazardous by- products of historical lead shot production. Excavation of the four units will follow a patterned schedule in order to extend existing Unit 1 wall profiles the length of the north and west dimensions of the Shot Tower's interior. Fill will be removed from Units 2, 3, and 4 in 3-to-4 ft intervals; however, finer grained intervals may be used if stratigraphic or artifactual conditions require them. The excavation of a set amount of fill will first take place at Units 2 and 4 in order to extend the north and west wall profiles of Unit 1 for documentation purposes. Afterward, a similar amount of fill will be removed from Unit 3, and then the cycle of fill removal will be repeated; however, after 6-to-7 ft of fill has been removed from Units 2, 3, and 4, additional fill will not be removed from Unit 3, which fronts the current doorway leading into/out of the structure, until Units 1, 2, and 4 are excavated to their bases. Leaving the removal of the lower fill of Unit 3 until the end will permit easier access to and exit from the lower excavated levels of Units 1, 2, and 4; and serve as a platform that supports equipment facilitating the mechanical removal of excavated fill. Excavation of the last unit will complete the interior excavation of fill from the Shot Tower, and the excavated area will not be backfilled. Task 2: Documentation During the archaeological investigation of the Shot Tower's interior, excavators will document the field work with field notes, data logs, plan maps, wall profiles, and photographs. Within each unit, all features will be documented graphically with photographs and line drawings. Upon completion of the excavation, a plan view of the interior base of the Shot Tower will be drafted showing all exposed structural features and their relationship to one another. At the end of the field investigation, all excavation documentation, together with any recovered artifacts, will be removed to a designated laboratory and office facility where the records and raw data will be processed, analyzed, and interpreted. Task 3: Laboratory Analysis and Data Organization/Interpretation Materials removed to the designated laboratory and office facility will be organized, reviewed, and prepared for incorporation into the project's final report. Collected artifacts will be inventoried, sorted, washed, labeled, analyzed, and interpreted. In addition, artifacts will be prepared for curation according to the procedures outlined by the facility, either the National Mississippi River Museum and Aquarium or another approved repository in Iowa, that will receive them. Photographic film will be processed and photo logs reviewed. In addition, field notes, line drawings and maps, and soil profiles will be reviewed or prepared for presentation in the final report. Soil samples collected in order to measure lead contamination within the Shot Tower, will be turned over to the Iowa Department of Natural Resources for processing and analysis. Task 4: Report Preparation A final report detailing the techniques and methodologies, as well as the results of the study will be prepared according to the Department of the Interior's Format Standards for Final Reports of Data Recovery Program and submitted to the City of Dubuque for review and distribution to the National Park Service and the Iowa State Historic Preservation Office for further comment and approval. Task 5: curation and Archiving Artifacts and Documentary Records Upon acceptance of the final report by the City of the Dubuque, the National Park Service, and the Iowa State Historic Preservation Office, all artifacts and documentary records generated by the study will be transferred to the National Mississippi River Museum and Aquarium or another designated facility in Iowa for curation and archival purposes (also see Task 3). Transferal of project related materials for curation and archival purposes will mark the end of the proposed archaeological project investigating the Shot Tower's interior fill deposits. EXHIBIT 2 Cost Great Lakes Archaeological Research Center A 427 East Stewart Street ~i Milwaukee, Wisconsin 53207 Estimate (414) 481-2093 Project: E Dubuque Shot TowerArchaeo%gica/Investigation City of Dubuque, Iowa Additional Archaeo%gica/ Studies Date: March 27, 2007 A. Direct Salary Costs i. Archival Research Person Rate Hours Cost Principa/Investigator $22.00 8 $176.00 Research Associate $15.00 12 $180.00 2. Field Investigations Person Rate Hours Cost Principa/Investigator $22.00 12 $264.00 Archaeo%gist $18.00 72 $1 296.00 Technicians (2J $18.00 144 $2,592.00 3. Report Person Rate Hours Cost Principa/Investigator $25.00 40 $1,000.00 Research Associate $15.00 16 $240.00 B. Direct Charges 1. Film and Film Developing $65.00 2. Meals (28 person days @ $25/day) $700.00 3. Lodging (25 person days @ $50/day) $1,250.00 A. $5,748.00 B. $2,015.00 C. Indirect Costs Overhead is 92.28% of Direct Labor (A) C. $5,304.25 D. Fixed Cost Profit Fee (10% of items A & C) D. $1,105.23 E. Subcontractor E. $0.00 F. Total Estimate F. $14,172.48 EXHIBIT 3 ~*,~~ COSt Estimate Project; Dubuque Shot TowerArchaeo%gica/Investigation City of Dubuque, Iowa Date; March 27, 2007 A. Direct Salary Costs 1. Archival Research Great Lakes Archaeological Research Center 427 East Stewart Street Milwaukee, Wisconsin 53207 (414) 481-2093 Person Rate Hours Cost Principa/Investigator $22.00 8 $176.00 Research Associate $15.00 8 $120.00 2. Field Investigations Person Rate Hours Cost Piincipa/Investigator $22.00 8 $176.00 Archaeo%gist $18.00 56 $1,008.00 Technicians (2J $18.00 112 $2,016.00 3. Report Person Rate Hours Cost Piincipa/Investigator $25.00 40 $1,000.00 Research Associate $15.00 16 $240.00 A. $4,736.00 B. Direct Charges 1. Film and Film Developing $65.00 2. Meals (18 person days @ $25/day) $450.00 3. Lodging (18 person days @ $50/day) $900.00 B. $1,415.00 C. Indirect Costs Overhead is 92.28% of Direct Labor (A) C. $4,370.38 D. Fixed Cost Profit Fee (10% of items A & C) D. $910.64 E. Subcontractor E, F. Total Estimate F. $11,432.02