septic info - Laserfiche WebLink

Home Browse Search

. '� � � 53191.1 TQ: Street File From: Michael P. Gaffron, Asst. Planning & Zoning Administrator Stephen Weckman, On-Site Systems Manager Date: May 31, 1991 Subject: 2280 French Creek Circle - Septic Problem Note: This was brought to our attention by Steve Schirmers after a request came to him from Quickway Excavating to check out a surface discharge from the mound system on this property. Symptoms: The mound system was discharging from the rock bed at the northwesterly corner. Bruce Bren had noted to Quickway that the discharge to the surface had occurred as early as February 1991. Possible Problems: 1. The pump in the pump tank was set or somehow functioning so that the volume pumped appears to exceed 400 gallons per cycle . The water level at pump shut off was at approximately the base of the pump. The evidence on the walls on the tank as to the normal pump turr%�elevation was approximately 2' higher. Steve Shirmers calculated the drainback should be no more than 30 gallons in the length of piping between the pump tank and the mound. If the 1, 000 gallon tank has approximately 19 gallons per vertical inch capacity, it appears that appr�ximately 400 gallons to 450 gallons were being pumped into the mound at each cycle. It was also clear that the single orange float that should be controlling pump turn-on/turn-off was hanging at its lowest point and was a foot above the water level, when the pump was still pumping, hence it is clear that the switch is not functioning correctly. 2. In the rockbed of the mound, eff luent discharging from the �ump station is puddling in the rockbed, and not penetrating into the sand layer below. Borings in the rockbed indicated water level at or above the top of the rockbed. Soil borings 1' outside the rockbed were not saturated and in fact were only moist to a depth at the bottom of the borings as much as 2-3' below the rockbed. Clearly, water entering the rockbed is not entering the sand f or final treatment, or is only entering the sand at a very slow rate, good for treatment but hydraulically not accepting the full load.