Lake Maintenance. Trash, debris, fishing line, lures, etc. in the lake shall be removed and disposed of off-site during each service visit. Visual inspections of lake banks, edges, inlets and infrastructure including islands shall be performed and documented as needed. Eastmark Great Park Lake and stream wetlands vegetation shall be maintained as regular routine work. The vegetation shall not be allowed to have an overgrown appearance as determined by the City representative, and shall be kept within the allowed boundaries as shown on the site “As-Built” plans (Attachment C). All cut vegetation and debris shall be removed and disposed of off-site during each service visit. Contractors shall immediately notify the City representative of any changes or hazards that exist. Frequencies. Red Mountain Lake and Riverview Lake shall be serviced twice monthly. Carriage Lane Lake, Dobson Ranch Lake, Greenfield Lake, Eastmark Phase 4 Lake, and Eastmark Great Park Lake and stream shall be serviced monthly. Emerald Park Lake will be scheduled on an “as-needed” basis by the City representative. Water Testing and Analysis. During service visits, the lake and streams shall be visually observed for clarity, algae, vector, and macrophyte density. Water samples shall be taken monthly for water analysis on golden algae, dissolved oxygen, pH, ammonia, nitrite, and phosphate levels. Water Testing and Analysis reports shall be submitted to the City of Mesa representative no later than five (5) working days after water samples are taken and must be submitted before the monthly billing. This shall be considered routine work. If any further testing is required other than the tests identified, the City representative shall be contacted, and permission granted prior to performing the tests. Any fees incurred to complete further testing shall be considered extra work and billed to the City. Mechanical Equipment Maintenance. Visual inspections of aeration equipment shall be conducted on service visits. Equipment concerns or broken and damaged equipment shall be reported to the City representative. Fish Management. Contractor shall provide recommendations for fish stocking to suppress clam and snail infestations, vector infestation, and macrophyte infestation. Based on needs within the system, recommendations shall encompass fish type, stocking rates, and appropriate timing for stocking. TREATMENTS: When applications are needed, the City shall incur no application fees. The monthly maintenance fee shall cover the cost of applications. The City will be responsible for the cost of Chemicals required to treat the system. EPA registered and approved chemicals shall be used, and treatments done as prescribed by the chemical labels. SDS for all recommended chemicals shall be provided to the City Representative for approval of use before applications are scheduled. All applicators shall be licensed appropriately. All chemical applications must have prior approval by the City Representative and shall be coordinated with the Arizona Game and Fish Department to ensure treatment times and dates don’t conflict with fish deliveries. All treatments shall be performed in a manner that causes the least amount of disturbance to the public.
