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SAN JOAQUM COUNTY ry ENVIRONMENTAL HEALTH DEPARTMENT E . 304 E Weber Avenue 3 Floor Stockton■CA 95202-2708 i� (209)468-3420 -Fax:(209)464-0138 - Web:www.co.san-ioaquin.ca.us/ehd NITRATE LOADING STUDY REQUIREMENT CHECKLIST ' SITE LOCATION: 404/5-40$0 E. CALLOWAY COURT, STOCKTON PA#: 06-313 (SA) REPORT DATE: 3/2$/2007 r S = Sufficient I = InsufficientSan Joaquin County Development Title Chapter 9-1105, Section 9-1105.2 S I 1.0 CHEMICAL AND PHYSICAL PROPERTIES OF SOIL E ❑ 1.1 Description of the chemical and physical properties of the soils underlying the site. ® ❑ 1,2 Description of the mass transport properties of the soils underlying the site with respect to nitrate and/or any other. constituent of concern identified for the project site. 2.0 GROUNDWATER ANALYSIS E ❑ 2.1 Description of: depth to groundwater, seasonal fluctuations of groundwater depth, directional flow and gradient. E ❑ 2.2 Description/discussion of any existing or potential groundwater contamination issues in the general location of the site. E ❑ 2.3 Description of the current use of groundwater at the site and of the future expected use of groundwater as related I to the proposed development project. 3.0 SOURCES AND CALCULATED IMPACT OF NITRATE TO GROUNDWATER E ❑ 3.1 Description of all current off-site sources of nitrate to soil and groundwater in the general up gradient area and the contribution of nitrate load from these sources to the project site. E ❑ 3.2 Description of impact of rainfall contribution of nitrate load to the project site. E ❑ 3.3 Description of all current on-site sources of nitrate to soil and groundwater and the contribution of nitrate load from these sources to the project site. E ❑ 3.4 Description of all proposed future on-site sources of nitrate to soil and groundwater and the contribution of nitrate load from these sources to the project site. ❑ E 3.5 Calculated mass balance of nitrogen loading considering all potential sources identified. Use of HanztchlFinnemore, or other appropriate formulalmodel,'if applicable. I, E ❑ 3.6 Calculated impact of nitrogen loading from site project to down gradient wells, rivers, lakes etc. 4.0 DISCUSSION OF NITRATE LOADING RESULTS RELATIVE TO PROPOSED METHOD OF WASTEWATER DISPOSAL E ❑ 4.1 Discussion of total nitrate impact from proposed project. ❑ E 4.2 Description of the methods proposed to mitigate any known or future impact to soil and groundwater from nitrate, k and/or any other constituent of concern, at and/or around the project site. 5.0 CONCLUSIONS AND RECOMMENDATIONSi SECTION ® ❑ 5.1 The report was signed, dated and stamped by a qualified environmental professional. E ❑ 5.2 The attachmentslappendices contain sufficient documentation to support claims made in the report. Reviewed By: Michael F. Escotto Reviewed Date: 4/13/2007 EHD 2"2-002 Pagel of 2 Surface A Sub Checklist 71[4/2003