Specifications include, but are not limited to: 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. 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, and Eastmark Lake 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. 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.