ADS CORP. - Laserfiche WebLink

Home Browse Search

Temporary Flow Monitoring Study(Santa Ana) December 2,2024 Page 2 Proposed Scope of Work ADS Environmental Services ("ADS") will provide temporary flow monitoring services for six (6) monitoring locations and one (1) rain gauge for a period of eight (8) weeks of flow data for the City of Santa Ana("City"). The work will be performed in three phases as set forth below: Phase I—Mobilization 1) Kick-off Meeting. Phase I will begin with a kick-off meeting between representatives of City and ADS. The purpose of the kick-off meeting is to discuss project scope, establish lines of communication, set milestones, and set the project schedule. (Conference call or email kickoff meeting for small projects) 2) Site Locations. ADS will work with Client to identify/verify the location of monitor installations. 3) Site Investigation. Once the installation sites are provided to ADS, ADS field crew(s)will perform site investigations, which will occur at the same time as installation. ADS will utilize a 2-person field crew for fieldwork and comply with Federal standards for confined-space entry. The proposed flow monitoring location will be located, inspected, and verified for hydraulic suitability. ADS will also check for debris in the manhole that could impact data quality. 4) Site Reports. Site reports will be generated upon completion of the site investigations. The site reports will include a sketch of the general location, physical characteristics and diameters of the proposed monitoring locations, manhole depths, flow measurements, and other comments pertinent to the location such as any special traffic or safety issues. Final site locations to be approved by Client. 1) Eguipment. ADS will utilize the ADS®Model Triton+TM flow monitor during the course of this project. A typical monitor installation will include a peak combo sensor that includes in the same housing an uplooking ultrasonic depth, redundant pressure depth, and continuous wave peak velocity sensor mounted at the invert. The ADS RainAlertIII wireless rain loggers with T136 tipping buckets (or equivalent) for rain data collection will be used. The RainAlertIIl is a battery operated self-contained tipping bucket type gauge with 0.01 inch resolution per tip. 2) Monitor Activation. Once installed,the monitors will be activated and set to take readings of at 5-minute intervals. ADS Field crews will take manual depth readings with a ruler and velocity readings with a portable, instantaneous velocity meter in order to confirm the monitor is collecting accurate data based on the actual existing hydraulic conditions at each location. Phase II—Flow Monitoring 1) Flow Monitoring. Once the monitors are installed and verified to be in working order. ADS will monitor the flows for a maximum period of eight(8)calendar O ENVIRONMENTAL SERVICES'