GB/T 37574-2019 Methods of investigation and assesment for water resources environment investigation in mining subsidence area

SL 79 SL 395-2007 GB/T 11891-1989 Water quality—Determination of kjeldahl nitrogen GB/T 14581-1993 Water quality—Guidance on sampling techniques from lakes,natural and man-made GB/T 19627-2005 Particle size analysis—Photon correlation spectroscopy HJ 2.3-2018 Environmental Impact Assessment Technical Guidelines for Surface Water Environment HJ/T 91-2002 Surface Water and Wastewater Monitoring Technical Specification HJ/T 166-2004 Soil environmental monitoring technical specifications HJ/T 373-2007 Quality assurance and quality control technical specifications for fixed pollution sources monitoring (trial) HJ 493-2009 Water quality: Sample preservation and management technical regulations HJ 494-2009 Water quality sampling technical guidance HJ 495-2009 Water quality sampling plan design technical guidance HJ 670-2013 Water quality: Determination of Phosphorus and Total Phosphorus by Continuous Flow-Ammonium Molybdate Spectrophotometry SL/T 196-2015 SL/T 196-2015 Hydrometric Survey Specification SL 196-1997 Hydraulic survey codebook/specification SL/T 238-1999 Water Resources Evaluation Guidelines SL/T 365-2015 Water Resources Monitoring Technical Guidelines SL/T 712-2021 River and lake ecological environment water demand calculation specification SL/T 712-2014 The standard for water demand calculation of river and lake ecological environments GB 3838-2002 Environmental quality standards for surface water GB/T 50123-2019 Standard for geotechnical testing method