Accreditation

To insure quality results, Dellavalle utilizes internal quality control checks with replicate samples, matrix spikes, external or control samples and method blanks. Additionally, we employ Good Laboratory Practices (GLP). Our performance is evaluated by California’s Environmental Laboratory Accreditation Program for water and wastewater and the North American Proficiency Testing program for manure, compost, soil, plant tissue and ag water.

Accreditation Program for Water & Wastewater

•  California State Water Resources Control Board
   Environmental Laboratory Accreditation Program, Certificate #1595

Accreditation Program for Manure

•  Minnesota Department of Agriculture
   Manure Testing Laboratory Certification

Approved Laboratory

•  CDFA Approved Laboratory Agreement and Permit #10-02
•   California Regional Water Quality Control Board

Proficiency Programs

Soil, plant tissue, agricultural water and manure (MAP): North American Proficiency Testing Program (NAPT) organized by the Soil Science Society of America

Method Reference

•  Soil, Plant and Water Reference Methods for the Western Region, 2005, 3rd Edition
•   Recommended Methods of Manure Analysis (RMMA)
•   Test Methods for the Examination of Composting and Compost (TMECC)
•   Diagnosis and Improvement of Saline and Alkali Soils, Handbook 60, L.A. Richards, 1954, State of California Department of Food and Agriculture
•   California Department of Food & Agriculture, Feed & Fertilizer, July 1988, 3D: Gypsum, Method
•   Standard Methods for the Examination of Water and Wastewater, 19th Edition
•   Soil Science Society of America Book Series, No. 5, 1996
•   Association of Official Analytical Chemists