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GEOSCIENCE will attend one ore -construction meeting with the selected Contractor and City personnel to review key Issues within the contract documents and technical specifications, In addition, questions will be addressed regarding hydrogeologic and logistical matters. Items to be discussed at the meeting will include (but not be limited to) required submittais acid inspections, permitting, discharge issues, work schedule; invoicing, and cammunioatign protocols. Additionally, at time of the pre•conatruction meeting, the prospective Contractor will have the opportunity to visit the wail $its to satisfy themselves regarding conditions that may affect equipment set up. At the time,ofthe meeting, the Contractor will have the opportunity to point out any Issues that they may have rega rding:preparadon of:the $ite for the work. G EOSCIENCE wil l coordinate Contractor activities prior to mobilization, This will include verifying that the Contractor has provided all Submittals required by the technical specifications and that equipment delivered to the site meets the requirements of the specifications, it is assumed that all rehebllftation Work will be bid under one contract and that attendance atohly one pra-oonstruction meeting for this Phase will be necessary, 3 Technical "flans and 5pecifloations GEOSCIENCE will prepare detailed technical plans and specifications for the rehabilitation of the City well based on observations obtained in Phase I, Including a detailed bid schedule with specific line Items showing units and unit quantities for the work. Items included in the technical spedfications will inolude (but are not limited to).the following; Well location, depth, dimensions, and materials; • Permits and regulatory requirement's; 6 Compliance with discharge requirements (as necessary); Job conditions (e.g., noise suppression, waste materials, runoff management, power, lighting, water, security, Sanitation, parking, traffic control, and work damage); 0 Mobilization, demobilization, clearing, grubbing, and site cleanup; > Equipment, materials, and records to be furnished by the Contractor; • Records to be kept by the Contractor; Well repair by swaging; • Well cleaning by brushing and bailing; + Well cleaning by chemical injection; • Well redevelopment by airlifting and swabbing; M Well redevelopment by pumping and surging; Aqu.ifar pumping and reoovorytest protocol; • Flowmeter survey; Field ground water quality monitoring protocol; > Ground water sampling protocol; Post-rohabilitation "dual -cam" downhole video survey; and Final well disinfection. GEOSCIENCE will submit an electronic copy of a i00% DRAFT version of the technical plans and specifications to the City for review and comment, Comrnehts to the draft 'will be incorporated and GEOSCICNCE will Submit one W electronic dopy and three (3) bound:hard copies of the 106% FINAL technical specifications, ~a. Field inspection a, Wall Modification bySwagrig If any damage to the well casing and screen is observed from the dcwhhole Video survey, It may be necessaryto swag a patch tast'ablirae filter paok and formation material. from entering the well during operation. If this is deemed necessary, GEOSCIENCE will provide full-time inspection while any patches or repairs are made, b. Initial Brushing and Bailing (if Well Casingand Screen A vigorous mechanical brushing procedure should be implemented to loosen and dislodge a maximum amount of surface enorustation and/or bloafpu(ing materials, GEOSCIENCE will provide part-time inspection during brushing and ballingof the well to monitor the progress of the task and to ensure that the proper methods and equipment are employed, GEOSOfENCE will provide direction to Contractor regarding problem areas of tine well screen that may require additional work. c. Chemical Rehabilitation Following mechanical rehabilitation, the wall should undergo chemical cleaningto remove biofilm produced by bacteria, clays and fine-grained sediments, as well as assisting In removing biological and mineral deposits that may be clogging the perforations and near -well tone. The exact nature of the ohomicals to be used shall be recommended based on the results of the downhole video survey (Phase 1) and review of the wells water chemistry. GEOSCIENGE will provide full-time inspection during mixing and application of the chemical mixture to ensure proper chemical concentrations and proper dispersal throughout the well casing and screen, d. Initial Redevelopment by Swabbing and Airlifting