Successful bidder shall maintain a quality assurance program and conduct all quality control testing required by the analytical method and certifying authorities. Successful Bidder is required to participate in the annual Discharge Monitoring Report–Quality Assurance (DMR-QA) study program and be able to provide current acceptable results to City within 30 days of contract execution and within 30 days of receiving any future reports. DMRQ-A study results provided to City shall be for all methods specified by City. Successful Bidder shall furnish, at no charge, a supply of new prepared sample containers and chain of custody forms (COCs). These items shall be shipped or delivered so that they arrive within at least 5 business days following the City’s request. Sample containers shall be in compliance with Table II section 136.3, 40 CFR Part 136. Successful bidder must provide a courier service for sample pick-up from the POTW between the hours of 10:30am and 3:30pm Monday thru Friday. Courier shall ensure all samples are delivered to the lab on the day pick-up occurred. The successful bidder shall have field staff capable of performing sampling events. These events are inclusive of setting up composite samplers (both inside and outside of manholes), 24 hour composite sample collection, onsite analysis as required, and transport of samples back to appropriate lab. Sample collection and preservation to be performed per 40 CFR Part 136. All testing shall be accordance with 40 CFR Part 136. Biosolids Analysis: The metals analysis shall be reported in mg/kg “dry weight basis”, along with showing the “minimum detection limit” (MDL) for each method used. All final certified reports are to provided via email as indicated on the chain of custody (COC). All emailed reports to be delivered as a PDF and CSV file. All final certified reports shall be available and delivered via email within 10 working days of sample pickup by the courier, or the date in which the sample was received at the lab if delivered by City staff. The successful bidder shall provide three references of clients with comparable analysis requirements