交底内容：
根据《建设工程项目管理规范》关于“建筑垃圾、渣土应在指定地点堆放和在施工现场设置机动车车辆冲洗设施”的规定，特要求拌合站在混凝土罐车冲洗场地设置污水沉淀池，具体要求有：
1、 沉淀池要求设置5米长，4米宽，2.0米深，四周壁的坡比为1：0.3。
2、 沉淀池采用2cm厚的10号砂浆抹面。
3、 沉淀池位置要求设置离水沟较近并与水沟相连，以方便水流畅通。
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Cards on the table contents:
According to "Construction Project Management Standards" on "construction debris, dirt should be piled in designated areas and at the construction site to set motor vehicle washing facilities" requirement, special Yaoqiu standing concrete mixing water tankers to clean the premises set the sedimentation tank, concrete requirements are:
1, sedimentation tank requirements set 5 meters long, 4 meters wide and 2.0 meters deep, surrounded by walls slope ratio of 1:0.3.
2, sedimentation tank 10 by 2cm thick mortar finishing.
3, settling tank location requirements set away from the ditch close and connected with the drain to facilitate water flow.
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