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Home My WebLink AboutRES.934.06-06-1994 _ � . �� BILL NO. 94-132 RESOLUTION NO. �''�� A RESOLUTION AUTHORIZING THE CITY MANAGER TO EXECUTE AUTHORIZATION NO. 3 WITH BURNS & MCDONNELL ENGINEERING COMPANY, INC. , FOR THE CITY'S POTABLE WATER TREATMENT AND DISTRIBUTION SYSTEM; AN ALLUVIAL WELL STUDY; AND FOR WATER PLANT EXPANSION BE IT RESOLVED BY THE COUNCIL OF THE CITY OF CAPE GIRARDEAU, MISSOURI, AS FOLLOWS: ARTICLE l. The City Manager, for and on behalf of the City of Cape Girardeau, Missouri, is hereby authorized to execute Authorization No. 3 with Burns & McDonnell Engineering Company, Inc. for the City's potable water treatment and distribution system; an alluvial well study; and for water plant expansion. A copy of said Authorization No. 3 is attached to this Resolution and made a part hereof. 19 �A PASSED AND ADOPTED THIS ✓(' �� DAY OF _�<�;_� ` i , �,`�- . A. . pradling, III, or ATTEST: r' � 1 J l� �� ,- "�r, 1 �!. Gayl L. Conrad Deputy City Clerk � - CITY OF CAPE GIRARDEAU, MISSOURI POTABLE WATER TREATMENT AND DISTRIBUTION SYSTEM AUTHORIZATION N0. 3 For PROFESSIONAL ENGINEERING SERVICES To BURNS & McDONNELL ENGINEERING COMPANY, INC. St. Louis, Missouri In accordance with the AGREEMENT For PROFESSIONAL ENGINEERING SERVICES dated March 21, 1994 between the City of Cape Girardeau, Missouri, (hereinafter called OWNER) and Burns & McDonnell Engineering Company, Inc. (hereinafter called ENGINEER) , OWNER hereby authorizes ENGINEER to proceed with the following services: I. SCOPE . This Authorization No. 3 covers services involved in providing an Alluvial Well Field Supply Feasibility Study to improve the reliability of the water supply to OWNER's existing Cape Rock Water Treatment Plant. The detailed description of the anticipated scope of services is presented in Attachment A. II. TIME OF SERVICE ENGINEER will proceed with providing the services set forth herein immediately upon verbal notice to proceed from OWNER, and will complete Phase I of these services within eight (8) weeks from start of work. It is understood that such completion is contingent on the timely review by OWNER of submittals from ENGINEER, as well as on any delays occasioned by events beyond the control of the ENGINEER (such as adverse weather conditions, regulatory agency actions, force majeure events, etc. ) . Zt is further understood that Phase II work will not commence until a separate, subsequent Authorization is developed by ENGINEER and approved by OWNER covering such Phase II services. 1 of 2 �, . III. RESPONSIBILITIES OF OWNER For this Authorization No. 3 only, the OWNER shall be responsible for providing the following: 1. Surveying necessary to locate the borings advanced by the drilling subcontractor, with respect to the State plane coordinate system; and to determine the top-of-ground elevation (USGS datum) at each such boring. 2. Equipment to furnish reasonable assistance to the drilling subcontractor in getting the drilling equipment into and out of the proposed drilling site. IV. COMPENSATION 1. OWNER shall compensate ENGINEER for providing the services set forth herein in accordance with the terms of the existing agreement, based on a cost reimbursable basis with a maximum (ceiling) amount. Details of the . cost estimate and unit price adjustments are presented in Attachment B. 2. Total payment for the Phase I scope of services described in this authorization shall not exceed the maximum of Sixty-Five Thousand Hundred Dollars ($65,000.00) without prior written approval by OWNER. AUTHORIZATION BY: - -��. , •- ,� , ��;. Ci'T�-{3��`CAPE GIRARDEAU, MISSOURI �j. � , . ? C r / , r ` ,-\ � �' By: �� Attest: �'/ " �l/� i.��, ', : . �, / . L / Date: � � - /- �`/ ACCEPTED BY: BURNS & McDONN L G NE I COMPANY, INC. By: Dr. Rob�rt T. Berry P.E. Vice President 2 of 2 CITY OF CAPE GIRARDEAU, MISSOURI POTABLE WATER TREATMENT AND DISTRIBUTION SYSTEM AUTHORIZATION N0. 3 ATTACHMENT A Detailed Scope of Services Alluvial Well Field Supply Feasibility Study Introduction The City of Cape Girardeau is interested in expanding and finding alternate water supply capabilities at its Cape Rock Water Treatment Plant north of the City. Currently, this plant treats Mississippi River water; however, after the 1993 flood, siltation in the existing surface water intake and the down- river migration of the zebra mussels which clog surface water intakes have prompted the consideration of a new water supply source. Groundwater from the Mississippi River alluvium has been proposed as an alternate source. � The primary site for groundwater development is 20 to 30 acres of alluvium immediately downstream of Cape Rock on the Missouri (west) side of the Mississippi River as shown on the attached Figure 1. The area is undeveloped, and no source of potential contamination is readily apparent. If the geology of this primary site proves to be inadequate, a secondary site may be investigated upstream from Cape Rock. Scope of Work Burns & McDonnell will perform a two phase investigation to determine the hydrogeologic characteristics of the proposed site and to provide a conceptual design for planning purposes . Final well design will be provided when it is authorized by the City. If during any phase of the investigation, unsuitable conditions are found, Burns & McDonnell will consult with the City to mutually decide on an alternate course of action. Phase I - Data Review, Preliminary Test Drilling, Geophysical Logging, Water Quality Sampling, and Letter Report Data Review - Corps of Engineers drill logs from the area will be reviewed to determine the feasibility of water supply development and to plan the layout of the five preliminary Phase I borings, if the information can be obtained from the COE. Preliminary Test Drillin� - Up to five rotary-wash test borings will be drilled to bedrock or to 150 feet to determine the nature of the alluvial materials at the site. A Burns & McDonnell geologist will be on the site 1 of 3 �i/ • " �.V. �� •� ��•r-�- • - ycn _,. ,�, . . I - � �• : >�..� � �\ ��`'�:.•,. .. -.,;-- `^' �-" ��- T�..- "',',,� �S�` ! y�:._'.:\��. �°� � c�" 1 \-'^\\^II ` ( ".. c,.C{!n� . . �.. --- � m�-/. ��•i. '�� • )../ �`G o1;�s-V} �� .\� \J � �ti•• - --- ., : i�:�- ^.�� , U �� \ ` •� _' '� � „��,� . .\... .'.. e. ",':: .: �' _ ��r�,�o� �� '�� \ ` ..., �; <..�,. �. 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O/� . �% li :i � ,.��_ �� l �'� }.� r�11, / 'I , - I�a� ��_�--_==�[:✓[��L,��_ o ��.4. �� / i'� �✓� � i'�tii�' � ,. � .aJ;,.�I�Y �I'� �� _ ��I��i Ig i � �'��o+e*- ^Rad��7w;er�J �-.L � I��. !f =�,..� „� -_-_ to log the borings and to direct the drilling operations. Soil samples will be collected from these borings and analyzed for grain size. It is understood that the City will negotiate access rights with affected property owners for test drilling, including option for possible future installation/operation of permanent wells. Burns & McDonnell will furnish City with typical language/format for such agreements for use by the City. Burns & McDonnell will also furnish City with map denoting proposed locations for test holes. Geophysical Logging - Because little is known of the subsurface materials, geophysical logging including electrical resistivity, spontaneous potential and gamma logging will be used to better define the alluvial geology. Water Quality Samplin� - Each boring will be completed with a 2-inch PVC monitoring well. After completion, each monitoring well will be purged, and a water sample will be collected for inorganic chemical analysis. Two of the proposed five samples will be tested for a partial list of constituents or parameters contained in the current Safe Drinking Water � Act amendments. The analysis to be performed includes regular inorganic chemistry, heavy metals, pesticides, herbicides, radionuclides, volatile organic chemicals, synthetic organic chemicals, total organic carbon, and trihalomethane precursor potential. Throughout the hydrogeological investigation, the monitoring wells will also be used to observe the effects of changes in river stage on the groundwater elevation. Letter Report - For the City's review, Burns & McDonnell will prepare a brief letter report on the findings of the preliminary test drilling. This report will also include detailed design and cost estimates for the Phase II test well as well as other recommendations for the Phase II drilling and aquifer testing. Phase II - Test Well Construction, Piezometer Installation, Aquifer Pumping Test, Analysis and Evaluation, and Hydrogeological Report After receiving notice to proceed with Phase II from the City, Burns & McDonnell will complete Phase II of the investigation - an aquifer testing program consisting of the following elements: Test Well Construction - Burns & McDonnell will design and contract for the construction of a test well at the proposed site. It is anticipated that the well will be designed as a permanent installation for later operation. Final sizing of the test well will depend on geologic conditions at the site and on the City's anticipated groundwater needs (number and size of wells) . Piezometer Installation - Approximately four to six additional piezometers will be installed to collect the groundwater drawdown data needed for the aquifer analysis. The final number of piezometers will depend on the location of the test well in relation to the original monitoring wells 2 of 3 installed during Phase I. It is anticipated that all or part of these additional piezometers will be abandoned after the aquifer pumping test is complete. Aquifer Pumping Test - An aquifer pumping test will be conducted on the test well. This pumping test will include a preliminary step-drawdown test and a 72-hour constant rate test. It is anticipated that the pumping rate will range from 2,000 to 2,500 gpm (depending on geology) . Following this pumping period will be a 24-hour recovery period. During the pumping test, automated data-collection equipment and manual measurements will record groundwater levels, pumping rate, river level, and water quality information. As part of the aquifer pumping test, water samples will also be collected for inorganic laboratory analysis. One of the samples collected during the pumping test will be tested for a partial list of constituents or parameters of the current Safe Drinking Water Act amendments. The laboratory testing will include regular inorganic chemistry, heavy metals, pesticides, herbicides, radionuclides, volatile organic chemicals, synthetic organic chemicals, total organic carbon, and trihalomethane precursor potential. 1 Analvsis and Evaluation - The aquifer pumping test data will be evaluated to determine the effective transmissivity and river infiltration values. Preliminary estimates of the number of wells, the well design criteria, and the well spacing will be developed during this analysis. In the event that difficult geologic conditions are encountered, groundwater modeling (not included in this proposal) may be required to determine a satisfactory well placement. Hydrogeologic Report - At the conclusion of the Phase II work, Burns & McDonnell will submit to the City a report detailing the activities, findings, analysis and results of the Phase I and Phase II investigations. This report will also include cost estimates for future well field development. 3 of 3 CITY OF CAPE GIRA.RDEAU, MISSOURI POTABLE WATER TREATMENT AND DISTRIBUTION SYSTEM AUTHORIZATION N0. 3 ATTACHMENT B Cost Estimate and Unit Price Adjustments Alluvial Well Field Supply Feasibility Study Phase I The total payment for the Phase I scope of services described in this Authorization includes the following elements: • Engineering - 88 hours of field coordination and geologist supervision of the drilling operations and expenses. - 98 hours for data evaluation, analysis, recommendations for Phase � II, report preparation, and meetings with the City to present the Phase I results and expenses. • Drilling - Mobilization. - Drilling five borings to 150 feet (total 750 lin. ft. ) . - Collect 15 split spoon samples. - Monitoring well construction five wells each 150 feet (total 750 lin. ft ) . � Installation of protective covers. � Development and sampling. • Geophysical Logging - Natural gamma ray. - Spontaneous Potential (SP) . - 16" SN 64" LN Resistivity. • Water Quality Analysis - Five samples for standard inorganic analyses. - Two samples for analyses of the Safe Drinking Water Act parameters as listed in Exhibit I, attached. • Survey Monitoring Locations - Survey location and elevation of the five monitoring wells . (by OWNER) 1 of 2 ERRIBIT I vATER QUALITY PARAHETEAS POR ANALYSIS pH Total Coliforms Specific Conductance Fecal Colifoc�s Hardness (mg/1 as CaCO3) Total Count� Total TOC Calcium Pes�icides TDS Herbicides Chloride Cyanide Sulfate ?hallium Calcium SOCs ., Magnesium Radionuclides Iron VOGS Sodium Ranadium Ammonia as N Holybdenium Nitrata as N Strontium Nitrite as N THM Formation (Precursor) Potencial :4lkalinity (mg/1 as CaCO3) Total Bicarbonate Manganese Fluozide Potassium Silica Phosphates Turbidity Hetals: . Arsenic Boron Cadmiwn Chromium Lead Mercury Copper Zinc Barium Silver Selenium Antimony Beryllium Nickel Aluminum The Phase I base price will have unit price adjustments according to the following schedule: Item Unit Price \ 1. Drilling $17.25 per lin. ft. 2. Monitoring Wells $18.40 per lin. ft. 3. Water Quality Analysis I $660 per sample (basic inorganics) 4. Water Quality Analysis II $3,775 per sample (Safe Drinking Water Act parameters as listed) Phase II The estimated budgetary cost for Phase II is currently believed to be within the range of $100,000 to $150,000 which includes engineering and construction � of a 150-foot deep test well, which may or may not be designed as a permanent installation to be incorporated in to the final well field system. Also included is the installation of additional piezometers needed for the pumping test, water quality sampling and analysis, and a detailed report. This estimate is based on information from a single well contractor. The cost estimates will be refined at the end of Phase I based on aquifer conditions and will be reduced by use of competitive bids for the well construction. 2 of 2