En la Parroquia Los Esteros perteneciente al Cantón Manta de la Provincia de Manabí, se desarrolla el proyecto de construcción del nuevo Mercado de Los Esteros; el cual genera grandes expectativas en los pobladores de área debido a que promueve el desarrollo social y económico pero también genera preocupaciones por los impactos ambientales que este podría ocasionar como por ejemplo el incremento en la generación de residuos sólidos; es por ello, que se plantea realizar una Evaluación de Impacto Ambiental en donde se identifiquen los impactos ocasionados por cada una de las actividades contempladas en el proyecto en su fase de construcción, fase de operación y mantenimiento y fase de cierre. Los impactos asociados al desarrollo de este proyecto pueden ser tanto positivos como negativos. Los componentes ambientales afectados con impactos negativos son el medio perceptual, aire, suelo, agua, flora y fauna; mientras que los que se ven influenciados de manera positiva son la infraestructura, humano y economía. La importancia de la identificación de impactos ambientales de un proyecto radica en que a partir de la Evaluación de Impacto Ambiental se plantean un conjunto de medidas preventivas, correctivas y de mejora con el fin de controlar, mitigar, corregir y reducir los impactos ambientales; estas medidas se presentan en un Plan de Manejo Ambiental que a su vez está conformado por nueve sub-planes en los cuales se establece su objetivo, entidad responsable y las actividades correspondientes. Palabras clave: Social, económico, impactos positivos y negativos. ABSTRACT In Los Esteros Parish, belonging to the Manta Canton of the Manabí Province, the construction project of the new Los Esteros Market is being developed; which generates great expectations in the inhabitants of the area because it promotes social and economic development but also generates concerns about the environmental impacts that this could cause, such as the increase in the generation of solid waste, that is why it is proposed to carry out An Environmental Impact Assessment where the impacts caused by each of the activities contemplated in the project in its construction phase, operation and maintenance phase and closure phase are identified. The impacts associated with the development of this project can be both positive and negative. The environmental components affected with negative impacts are the perceptual environment, air, soil, water, flora and fauna; while those that are influenced in a positive way are the infrastructure, human and economy. The importance of identifying environmental impacts of a project lies in the fact that based on the Environmental Impact Assessment, a set of preventive, corrective and improvement measures are proposed in order to control, mitigate, correct and reduce environmental impacts; These measures are presented in an Environmental Management Plan that in turn is made up of nine sub-plans in which its objective, responsible entity and the corresponding activities are established. Keywords: Social, economic, positive and negative impacts. Fecha de recepción: 09 de abril de 2018; Fecha de aceptación: 04 de julio de 2018; Fecha de publicación: 09 de julio de 2018.In Los Esteros Parish, belonging to the Manta Canton of the Manabí Province, the construction project of the new Los Esteros Market is being developed; which generates great expectations in the inhabitants of the area because it promotes social and economic development but also generates concerns about the environmental impacts that this could cause, such as the increase in the generation of solid waste, that is why it is proposed to carry out An Environmental Impact Assessment where the impacts caused by each of the activities contemplated in the project in its construction phase, operation and maintenance phase and closure phase are identified. The impacts associated with the development of this project can be both positive and negative. The environmental components affected with negative impacts are the perceptual environment, air, soil, water, flora and fauna; while those that are influenced in a positive way are the infrastructure, human and economy. The importance of identifying environmental impacts of a project lies in the fact that based on the Environmental Impact Assessment, a set of preventive, corrective and improvement measures are proposed in order to control, mitigate, correct and reduce environmental impacts; These measures are presented in an Environmental Management Plan that in turn is made up of nine sub-plans in which its objective, responsible entity and the corresponding activities are established. Keywords: Social, economic, positive and negative impacts.